source "drivers/net/arm/Kconfig"
-config MACE
- tristate "MACE (Power Mac ethernet) support"
- depends on PPC_PMAC && PPC32
- select CRC32
- help
- Power Macintoshes and clones with Ethernet built-in on the
- motherboard will usually use a MACE (Medium Access Control for
- Ethernet) interface. Say Y to include support for the MACE chip.
-
- To compile this driver as a module, choose M here: the module
- will be called mace.
-
-config MACE_AAUI_PORT
- bool "Use AAUI port instead of TP by default"
- depends on MACE
- help
- Some Apple machines (notably the Apple Network Server) which use the
- MACE ethernet chip have an Apple AUI port (small 15-pin connector),
- instead of an 8-pin RJ45 connector for twisted-pair ethernet. Say
- Y here if you have such a machine. If unsure, say N.
- The driver will default to AAUI on ANS anyway, and if you use it as
- a module, you can provide the port_aaui=0|1 to force the driver.
-
-config BMAC
- tristate "BMAC (G3 ethernet) support"
- depends on PPC_PMAC && PPC32
- select CRC32
- help
- Say Y for support of BMAC Ethernet interfaces. These are used on G3
- computers.
-
- To compile this driver as a module, choose M here: the module
- will be called bmac.
-
-config MAC89x0
- tristate "Macintosh CS89x0 based ethernet cards"
- depends on MAC
- ---help---
- Support for CS89x0 chipset based Ethernet cards. If you have a
- Nubus or LC-PDS network (Ethernet) card of this type, say Y and
- read the Ethernet-HOWTO, available from
- <http://www.tldp.org/docs.html#howto>.
-
- To compile this driver as a module, choose M here. This module will
- be called mac89x0.
-
config MACSONIC
tristate "Macintosh SONIC based ethernet (onboard, NuBus, LC, CS)"
depends on MAC
To compile this driver as a module, choose M here. This module will
be called macsonic.
-config MACMACE
- bool "Macintosh (AV) onboard MACE ethernet"
- depends on MAC
- select CRC32
- help
- Support for the onboard AMD 79C940 MACE Ethernet controller used in
- the 660AV and 840AV Macintosh. If you have one of these Macintoshes
- say Y and read the Ethernet-HOWTO, available from
- <http://www.tldp.org/docs.html#howto>.
-
config KORINA
tristate "Korina (IDT RC32434) Ethernet support"
depends on NET_ETHERNET && MIKROTIK_RB532
To compile this driver as a module, choose M here. The module
will be called forcedeth.
-config CS89x0
- tristate "CS89x0 support"
- depends on NET_ETHERNET && (ISA || EISA || MACH_IXDP2351 \
- || ARCH_IXDP2X01 || MACH_MX31ADS || MACH_QQ2440)
- ---help---
- Support for CS89x0 chipset based Ethernet cards. If you have a
- network (Ethernet) card of this type, say Y and read the
- Ethernet-HOWTO, available from
- <http://www.tldp.org/docs.html#howto> as well as
- <file:Documentation/networking/cs89x0.txt>.
-
- To compile this driver as a module, choose M here. The module
- will be called cs89x0.
-
-config CS89x0_NONISA_IRQ
- def_bool y
- depends on CS89x0 != n
- depends on MACH_IXDP2351 || ARCH_IXDP2X01 || MACH_MX31ADS || MACH_QQ2440
-
config TC35815
tristate "TOSHIBA TC35815 Ethernet support"
depends on NET_PCI && PCI && MIPS
obj-$(CONFIG_ROADRUNNER) += rrunner.o
-obj-$(CONFIG_MACE) += mace.o
-obj-$(CONFIG_BMAC) += bmac.o
-
obj-$(CONFIG_TLAN) += tlan.o
obj-$(CONFIG_SIS190) += sis190.o
obj-$(CONFIG_SIS900) += sis900.o
obj-$(CONFIG_MIPS_JAZZ_SONIC) += jazzsonic.o
obj-$(CONFIG_MIPS_SIM_NET) += mipsnet.o
obj-$(CONFIG_SGI_IOC3_ETH) += ioc3-eth.o
-obj-$(CONFIG_CS89x0) += cs89x0.o
obj-$(CONFIG_MACSONIC) += macsonic.o
-obj-$(CONFIG_MACMACE) += macmace.o
-obj-$(CONFIG_MAC89x0) += mac89x0.o
obj-$(CONFIG_TUN) += tun.o
obj-$(CONFIG_VETH) += veth.o
obj-$(CONFIG_NET_NETX) += netx-eth.o
+++ /dev/null
-/*
- * Network device driver for the BMAC ethernet controller on
- * Apple Powermacs. Assumes it's under a DBDMA controller.
- *
- * Copyright (C) 1998 Randy Gobbel.
- *
- * May 1999, Al Viro: proper release of /proc/net/bmac entry, switched to
- * dynamic procfs inode.
- */
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/delay.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/crc32.h>
-#include <linux/bitrev.h>
-#include <linux/ethtool.h>
-#include <linux/slab.h>
-#include <asm/prom.h>
-#include <asm/dbdma.h>
-#include <asm/io.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/machdep.h>
-#include <asm/pmac_feature.h>
-#include <asm/macio.h>
-#include <asm/irq.h>
-
-#include "bmac.h"
-
-#define trunc_page(x) ((void *)(((unsigned long)(x)) & ~((unsigned long)(PAGE_SIZE - 1))))
-#define round_page(x) trunc_page(((unsigned long)(x)) + ((unsigned long)(PAGE_SIZE - 1)))
-
-/*
- * CRC polynomial - used in working out multicast filter bits.
- */
-#define ENET_CRCPOLY 0x04c11db7
-
-/* switch to use multicast code lifted from sunhme driver */
-#define SUNHME_MULTICAST
-
-#define N_RX_RING 64
-#define N_TX_RING 32
-#define MAX_TX_ACTIVE 1
-#define ETHERCRC 4
-#define ETHERMINPACKET 64
-#define ETHERMTU 1500
-#define RX_BUFLEN (ETHERMTU + 14 + ETHERCRC + 2)
-#define TX_TIMEOUT HZ /* 1 second */
-
-/* Bits in transmit DMA status */
-#define TX_DMA_ERR 0x80
-
-#define XXDEBUG(args)
-
-struct bmac_data {
- /* volatile struct bmac *bmac; */
- struct sk_buff_head *queue;
- volatile struct dbdma_regs __iomem *tx_dma;
- int tx_dma_intr;
- volatile struct dbdma_regs __iomem *rx_dma;
- int rx_dma_intr;
- volatile struct dbdma_cmd *tx_cmds; /* xmit dma command list */
- volatile struct dbdma_cmd *rx_cmds; /* recv dma command list */
- struct macio_dev *mdev;
- int is_bmac_plus;
- struct sk_buff *rx_bufs[N_RX_RING];
- int rx_fill;
- int rx_empty;
- struct sk_buff *tx_bufs[N_TX_RING];
- int tx_fill;
- int tx_empty;
- unsigned char tx_fullup;
- struct timer_list tx_timeout;
- int timeout_active;
- int sleeping;
- int opened;
- unsigned short hash_use_count[64];
- unsigned short hash_table_mask[4];
- spinlock_t lock;
-};
-
-#if 0 /* Move that to ethtool */
-
-typedef struct bmac_reg_entry {
- char *name;
- unsigned short reg_offset;
-} bmac_reg_entry_t;
-
-#define N_REG_ENTRIES 31
-
-static bmac_reg_entry_t reg_entries[N_REG_ENTRIES] = {
- {"MEMADD", MEMADD},
- {"MEMDATAHI", MEMDATAHI},
- {"MEMDATALO", MEMDATALO},
- {"TXPNTR", TXPNTR},
- {"RXPNTR", RXPNTR},
- {"IPG1", IPG1},
- {"IPG2", IPG2},
- {"ALIMIT", ALIMIT},
- {"SLOT", SLOT},
- {"PALEN", PALEN},
- {"PAPAT", PAPAT},
- {"TXSFD", TXSFD},
- {"JAM", JAM},
- {"TXCFG", TXCFG},
- {"TXMAX", TXMAX},
- {"TXMIN", TXMIN},
- {"PAREG", PAREG},
- {"DCNT", DCNT},
- {"NCCNT", NCCNT},
- {"NTCNT", NTCNT},
- {"EXCNT", EXCNT},
- {"LTCNT", LTCNT},
- {"TXSM", TXSM},
- {"RXCFG", RXCFG},
- {"RXMAX", RXMAX},
- {"RXMIN", RXMIN},
- {"FRCNT", FRCNT},
- {"AECNT", AECNT},
- {"FECNT", FECNT},
- {"RXSM", RXSM},
- {"RXCV", RXCV}
-};
-
-#endif
-
-static unsigned char *bmac_emergency_rxbuf;
-
-/*
- * Number of bytes of private data per BMAC: allow enough for
- * the rx and tx dma commands plus a branch dma command each,
- * and another 16 bytes to allow us to align the dma command
- * buffers on a 16 byte boundary.
- */
-#define PRIV_BYTES (sizeof(struct bmac_data) \
- + (N_RX_RING + N_TX_RING + 4) * sizeof(struct dbdma_cmd) \
- + sizeof(struct sk_buff_head))
-
-static int bmac_open(struct net_device *dev);
-static int bmac_close(struct net_device *dev);
-static int bmac_transmit_packet(struct sk_buff *skb, struct net_device *dev);
-static void bmac_set_multicast(struct net_device *dev);
-static void bmac_reset_and_enable(struct net_device *dev);
-static void bmac_start_chip(struct net_device *dev);
-static void bmac_init_chip(struct net_device *dev);
-static void bmac_init_registers(struct net_device *dev);
-static void bmac_enable_and_reset_chip(struct net_device *dev);
-static int bmac_set_address(struct net_device *dev, void *addr);
-static irqreturn_t bmac_misc_intr(int irq, void *dev_id);
-static irqreturn_t bmac_txdma_intr(int irq, void *dev_id);
-static irqreturn_t bmac_rxdma_intr(int irq, void *dev_id);
-static void bmac_set_timeout(struct net_device *dev);
-static void bmac_tx_timeout(unsigned long data);
-static int bmac_output(struct sk_buff *skb, struct net_device *dev);
-static void bmac_start(struct net_device *dev);
-
-#define DBDMA_SET(x) ( ((x) | (x) << 16) )
-#define DBDMA_CLEAR(x) ( (x) << 16)
-
-static inline void
-dbdma_st32(volatile __u32 __iomem *a, unsigned long x)
-{
- __asm__ volatile( "stwbrx %0,0,%1" : : "r" (x), "r" (a) : "memory");
-}
-
-static inline unsigned long
-dbdma_ld32(volatile __u32 __iomem *a)
-{
- __u32 swap;
- __asm__ volatile ("lwbrx %0,0,%1" : "=r" (swap) : "r" (a));
- return swap;
-}
-
-static void
-dbdma_continue(volatile struct dbdma_regs __iomem *dmap)
-{
- dbdma_st32(&dmap->control,
- DBDMA_SET(RUN|WAKE) | DBDMA_CLEAR(PAUSE|DEAD));
- eieio();
-}
-
-static void
-dbdma_reset(volatile struct dbdma_regs __iomem *dmap)
-{
- dbdma_st32(&dmap->control,
- DBDMA_CLEAR(ACTIVE|DEAD|WAKE|FLUSH|PAUSE|RUN));
- eieio();
- while (dbdma_ld32(&dmap->status) & RUN)
- eieio();
-}
-
-static void
-dbdma_setcmd(volatile struct dbdma_cmd *cp,
- unsigned short cmd, unsigned count, unsigned long addr,
- unsigned long cmd_dep)
-{
- out_le16(&cp->command, cmd);
- out_le16(&cp->req_count, count);
- out_le32(&cp->phy_addr, addr);
- out_le32(&cp->cmd_dep, cmd_dep);
- out_le16(&cp->xfer_status, 0);
- out_le16(&cp->res_count, 0);
-}
-
-static inline
-void bmwrite(struct net_device *dev, unsigned long reg_offset, unsigned data )
-{
- out_le16((void __iomem *)dev->base_addr + reg_offset, data);
-}
-
-
-static inline
-unsigned short bmread(struct net_device *dev, unsigned long reg_offset )
-{
- return in_le16((void __iomem *)dev->base_addr + reg_offset);
-}
-
-static void
-bmac_enable_and_reset_chip(struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
- volatile struct dbdma_regs __iomem *td = bp->tx_dma;
-
- if (rd)
- dbdma_reset(rd);
- if (td)
- dbdma_reset(td);
-
- pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 1);
-}
-
-#define MIFDELAY udelay(10)
-
-static unsigned int
-bmac_mif_readbits(struct net_device *dev, int nb)
-{
- unsigned int val = 0;
-
- while (--nb >= 0) {
- bmwrite(dev, MIFCSR, 0);
- MIFDELAY;
- if (bmread(dev, MIFCSR) & 8)
- val |= 1 << nb;
- bmwrite(dev, MIFCSR, 1);
- MIFDELAY;
- }
- bmwrite(dev, MIFCSR, 0);
- MIFDELAY;
- bmwrite(dev, MIFCSR, 1);
- MIFDELAY;
- return val;
-}
-
-static void
-bmac_mif_writebits(struct net_device *dev, unsigned int val, int nb)
-{
- int b;
-
- while (--nb >= 0) {
- b = (val & (1 << nb))? 6: 4;
- bmwrite(dev, MIFCSR, b);
- MIFDELAY;
- bmwrite(dev, MIFCSR, b|1);
- MIFDELAY;
- }
-}
-
-static unsigned int
-bmac_mif_read(struct net_device *dev, unsigned int addr)
-{
- unsigned int val;
-
- bmwrite(dev, MIFCSR, 4);
- MIFDELAY;
- bmac_mif_writebits(dev, ~0U, 32);
- bmac_mif_writebits(dev, 6, 4);
- bmac_mif_writebits(dev, addr, 10);
- bmwrite(dev, MIFCSR, 2);
- MIFDELAY;
- bmwrite(dev, MIFCSR, 1);
- MIFDELAY;
- val = bmac_mif_readbits(dev, 17);
- bmwrite(dev, MIFCSR, 4);
- MIFDELAY;
- return val;
-}
-
-static void
-bmac_mif_write(struct net_device *dev, unsigned int addr, unsigned int val)
-{
- bmwrite(dev, MIFCSR, 4);
- MIFDELAY;
- bmac_mif_writebits(dev, ~0U, 32);
- bmac_mif_writebits(dev, 5, 4);
- bmac_mif_writebits(dev, addr, 10);
- bmac_mif_writebits(dev, 2, 2);
- bmac_mif_writebits(dev, val, 16);
- bmac_mif_writebits(dev, 3, 2);
-}
-
-static void
-bmac_init_registers(struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- volatile unsigned short regValue;
- unsigned short *pWord16;
- int i;
-
- /* XXDEBUG(("bmac: enter init_registers\n")); */
-
- bmwrite(dev, RXRST, RxResetValue);
- bmwrite(dev, TXRST, TxResetBit);
-
- i = 100;
- do {
- --i;
- udelay(10000);
- regValue = bmread(dev, TXRST); /* wait for reset to clear..acknowledge */
- } while ((regValue & TxResetBit) && i > 0);
-
- if (!bp->is_bmac_plus) {
- regValue = bmread(dev, XCVRIF);
- regValue |= ClkBit | SerialMode | COLActiveLow;
- bmwrite(dev, XCVRIF, regValue);
- udelay(10000);
- }
-
- bmwrite(dev, RSEED, (unsigned short)0x1968);
-
- regValue = bmread(dev, XIFC);
- regValue |= TxOutputEnable;
- bmwrite(dev, XIFC, regValue);
-
- bmread(dev, PAREG);
-
- /* set collision counters to 0 */
- bmwrite(dev, NCCNT, 0);
- bmwrite(dev, NTCNT, 0);
- bmwrite(dev, EXCNT, 0);
- bmwrite(dev, LTCNT, 0);
-
- /* set rx counters to 0 */
- bmwrite(dev, FRCNT, 0);
- bmwrite(dev, LECNT, 0);
- bmwrite(dev, AECNT, 0);
- bmwrite(dev, FECNT, 0);
- bmwrite(dev, RXCV, 0);
-
- /* set tx fifo information */
- bmwrite(dev, TXTH, 4); /* 4 octets before tx starts */
-
- bmwrite(dev, TXFIFOCSR, 0); /* first disable txFIFO */
- bmwrite(dev, TXFIFOCSR, TxFIFOEnable );
-
- /* set rx fifo information */
- bmwrite(dev, RXFIFOCSR, 0); /* first disable rxFIFO */
- bmwrite(dev, RXFIFOCSR, RxFIFOEnable );
-
- //bmwrite(dev, TXCFG, TxMACEnable); /* TxNeverGiveUp maybe later */
- bmread(dev, STATUS); /* read it just to clear it */
-
- /* zero out the chip Hash Filter registers */
- for (i=0; i<4; i++) bp->hash_table_mask[i] = 0;
- bmwrite(dev, BHASH3, bp->hash_table_mask[0]); /* bits 15 - 0 */
- bmwrite(dev, BHASH2, bp->hash_table_mask[1]); /* bits 31 - 16 */
- bmwrite(dev, BHASH1, bp->hash_table_mask[2]); /* bits 47 - 32 */
- bmwrite(dev, BHASH0, bp->hash_table_mask[3]); /* bits 63 - 48 */
-
- pWord16 = (unsigned short *)dev->dev_addr;
- bmwrite(dev, MADD0, *pWord16++);
- bmwrite(dev, MADD1, *pWord16++);
- bmwrite(dev, MADD2, *pWord16);
-
- bmwrite(dev, RXCFG, RxCRCNoStrip | RxHashFilterEnable | RxRejectOwnPackets);
-
- bmwrite(dev, INTDISABLE, EnableNormal);
-}
-
-#if 0
-static void
-bmac_disable_interrupts(struct net_device *dev)
-{
- bmwrite(dev, INTDISABLE, DisableAll);
-}
-
-static void
-bmac_enable_interrupts(struct net_device *dev)
-{
- bmwrite(dev, INTDISABLE, EnableNormal);
-}
-#endif
-
-
-static void
-bmac_start_chip(struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
- unsigned short oldConfig;
-
- /* enable rx dma channel */
- dbdma_continue(rd);
-
- oldConfig = bmread(dev, TXCFG);
- bmwrite(dev, TXCFG, oldConfig | TxMACEnable );
-
- /* turn on rx plus any other bits already on (promiscuous possibly) */
- oldConfig = bmread(dev, RXCFG);
- bmwrite(dev, RXCFG, oldConfig | RxMACEnable );
- udelay(20000);
-}
-
-static void
-bmac_init_phy(struct net_device *dev)
-{
- unsigned int addr;
- struct bmac_data *bp = netdev_priv(dev);
-
- printk(KERN_DEBUG "phy registers:");
- for (addr = 0; addr < 32; ++addr) {
- if ((addr & 7) == 0)
- printk(KERN_DEBUG);
- printk(KERN_CONT " %.4x", bmac_mif_read(dev, addr));
- }
- printk(KERN_CONT "\n");
-
- if (bp->is_bmac_plus) {
- unsigned int capable, ctrl;
-
- ctrl = bmac_mif_read(dev, 0);
- capable = ((bmac_mif_read(dev, 1) & 0xf800) >> 6) | 1;
- if (bmac_mif_read(dev, 4) != capable ||
- (ctrl & 0x1000) == 0) {
- bmac_mif_write(dev, 4, capable);
- bmac_mif_write(dev, 0, 0x1200);
- } else
- bmac_mif_write(dev, 0, 0x1000);
- }
-}
-
-static void bmac_init_chip(struct net_device *dev)
-{
- bmac_init_phy(dev);
- bmac_init_registers(dev);
-}
-
-#ifdef CONFIG_PM
-static int bmac_suspend(struct macio_dev *mdev, pm_message_t state)
-{
- struct net_device* dev = macio_get_drvdata(mdev);
- struct bmac_data *bp = netdev_priv(dev);
- unsigned long flags;
- unsigned short config;
- int i;
-
- netif_device_detach(dev);
- /* prolly should wait for dma to finish & turn off the chip */
- spin_lock_irqsave(&bp->lock, flags);
- if (bp->timeout_active) {
- del_timer(&bp->tx_timeout);
- bp->timeout_active = 0;
- }
- disable_irq(dev->irq);
- disable_irq(bp->tx_dma_intr);
- disable_irq(bp->rx_dma_intr);
- bp->sleeping = 1;
- spin_unlock_irqrestore(&bp->lock, flags);
- if (bp->opened) {
- volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
- volatile struct dbdma_regs __iomem *td = bp->tx_dma;
-
- config = bmread(dev, RXCFG);
- bmwrite(dev, RXCFG, (config & ~RxMACEnable));
- config = bmread(dev, TXCFG);
- bmwrite(dev, TXCFG, (config & ~TxMACEnable));
- bmwrite(dev, INTDISABLE, DisableAll); /* disable all intrs */
- /* disable rx and tx dma */
- st_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */
- st_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */
- /* free some skb's */
- for (i=0; i<N_RX_RING; i++) {
- if (bp->rx_bufs[i] != NULL) {
- dev_kfree_skb(bp->rx_bufs[i]);
- bp->rx_bufs[i] = NULL;
- }
- }
- for (i = 0; i<N_TX_RING; i++) {
- if (bp->tx_bufs[i] != NULL) {
- dev_kfree_skb(bp->tx_bufs[i]);
- bp->tx_bufs[i] = NULL;
- }
- }
- }
- pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);
- return 0;
-}
-
-static int bmac_resume(struct macio_dev *mdev)
-{
- struct net_device* dev = macio_get_drvdata(mdev);
- struct bmac_data *bp = netdev_priv(dev);
-
- /* see if this is enough */
- if (bp->opened)
- bmac_reset_and_enable(dev);
-
- enable_irq(dev->irq);
- enable_irq(bp->tx_dma_intr);
- enable_irq(bp->rx_dma_intr);
- netif_device_attach(dev);
-
- return 0;
-}
-#endif /* CONFIG_PM */
-
-static int bmac_set_address(struct net_device *dev, void *addr)
-{
- struct bmac_data *bp = netdev_priv(dev);
- unsigned char *p = addr;
- unsigned short *pWord16;
- unsigned long flags;
- int i;
-
- XXDEBUG(("bmac: enter set_address\n"));
- spin_lock_irqsave(&bp->lock, flags);
-
- for (i = 0; i < 6; ++i) {
- dev->dev_addr[i] = p[i];
- }
- /* load up the hardware address */
- pWord16 = (unsigned short *)dev->dev_addr;
- bmwrite(dev, MADD0, *pWord16++);
- bmwrite(dev, MADD1, *pWord16++);
- bmwrite(dev, MADD2, *pWord16);
-
- spin_unlock_irqrestore(&bp->lock, flags);
- XXDEBUG(("bmac: exit set_address\n"));
- return 0;
-}
-
-static inline void bmac_set_timeout(struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&bp->lock, flags);
- if (bp->timeout_active)
- del_timer(&bp->tx_timeout);
- bp->tx_timeout.expires = jiffies + TX_TIMEOUT;
- bp->tx_timeout.function = bmac_tx_timeout;
- bp->tx_timeout.data = (unsigned long) dev;
- add_timer(&bp->tx_timeout);
- bp->timeout_active = 1;
- spin_unlock_irqrestore(&bp->lock, flags);
-}
-
-static void
-bmac_construct_xmt(struct sk_buff *skb, volatile struct dbdma_cmd *cp)
-{
- void *vaddr;
- unsigned long baddr;
- unsigned long len;
-
- len = skb->len;
- vaddr = skb->data;
- baddr = virt_to_bus(vaddr);
-
- dbdma_setcmd(cp, (OUTPUT_LAST | INTR_ALWAYS | WAIT_IFCLR), len, baddr, 0);
-}
-
-static void
-bmac_construct_rxbuff(struct sk_buff *skb, volatile struct dbdma_cmd *cp)
-{
- unsigned char *addr = skb? skb->data: bmac_emergency_rxbuf;
-
- dbdma_setcmd(cp, (INPUT_LAST | INTR_ALWAYS), RX_BUFLEN,
- virt_to_bus(addr), 0);
-}
-
-static void
-bmac_init_tx_ring(struct bmac_data *bp)
-{
- volatile struct dbdma_regs __iomem *td = bp->tx_dma;
-
- memset((char *)bp->tx_cmds, 0, (N_TX_RING+1) * sizeof(struct dbdma_cmd));
-
- bp->tx_empty = 0;
- bp->tx_fill = 0;
- bp->tx_fullup = 0;
-
- /* put a branch at the end of the tx command list */
- dbdma_setcmd(&bp->tx_cmds[N_TX_RING],
- (DBDMA_NOP | BR_ALWAYS), 0, 0, virt_to_bus(bp->tx_cmds));
-
- /* reset tx dma */
- dbdma_reset(td);
- out_le32(&td->wait_sel, 0x00200020);
- out_le32(&td->cmdptr, virt_to_bus(bp->tx_cmds));
-}
-
-static int
-bmac_init_rx_ring(struct bmac_data *bp)
-{
- volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
- int i;
- struct sk_buff *skb;
-
- /* initialize list of sk_buffs for receiving and set up recv dma */
- memset((char *)bp->rx_cmds, 0,
- (N_RX_RING + 1) * sizeof(struct dbdma_cmd));
- for (i = 0; i < N_RX_RING; i++) {
- if ((skb = bp->rx_bufs[i]) == NULL) {
- bp->rx_bufs[i] = skb = dev_alloc_skb(RX_BUFLEN+2);
- if (skb != NULL)
- skb_reserve(skb, 2);
- }
- bmac_construct_rxbuff(skb, &bp->rx_cmds[i]);
- }
-
- bp->rx_empty = 0;
- bp->rx_fill = i;
-
- /* Put a branch back to the beginning of the receive command list */
- dbdma_setcmd(&bp->rx_cmds[N_RX_RING],
- (DBDMA_NOP | BR_ALWAYS), 0, 0, virt_to_bus(bp->rx_cmds));
-
- /* start rx dma */
- dbdma_reset(rd);
- out_le32(&rd->cmdptr, virt_to_bus(bp->rx_cmds));
-
- return 1;
-}
-
-
-static int bmac_transmit_packet(struct sk_buff *skb, struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- volatile struct dbdma_regs __iomem *td = bp->tx_dma;
- int i;
-
- /* see if there's a free slot in the tx ring */
- /* XXDEBUG(("bmac_xmit_start: empty=%d fill=%d\n", */
- /* bp->tx_empty, bp->tx_fill)); */
- i = bp->tx_fill + 1;
- if (i >= N_TX_RING)
- i = 0;
- if (i == bp->tx_empty) {
- netif_stop_queue(dev);
- bp->tx_fullup = 1;
- XXDEBUG(("bmac_transmit_packet: tx ring full\n"));
- return -1; /* can't take it at the moment */
- }
-
- dbdma_setcmd(&bp->tx_cmds[i], DBDMA_STOP, 0, 0, 0);
-
- bmac_construct_xmt(skb, &bp->tx_cmds[bp->tx_fill]);
-
- bp->tx_bufs[bp->tx_fill] = skb;
- bp->tx_fill = i;
-
- dev->stats.tx_bytes += skb->len;
-
- dbdma_continue(td);
-
- return 0;
-}
-
-static int rxintcount;
-
-static irqreturn_t bmac_rxdma_intr(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct bmac_data *bp = netdev_priv(dev);
- volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
- volatile struct dbdma_cmd *cp;
- int i, nb, stat;
- struct sk_buff *skb;
- unsigned int residual;
- int last;
- unsigned long flags;
-
- spin_lock_irqsave(&bp->lock, flags);
-
- if (++rxintcount < 10) {
- XXDEBUG(("bmac_rxdma_intr\n"));
- }
-
- last = -1;
- i = bp->rx_empty;
-
- while (1) {
- cp = &bp->rx_cmds[i];
- stat = ld_le16(&cp->xfer_status);
- residual = ld_le16(&cp->res_count);
- if ((stat & ACTIVE) == 0)
- break;
- nb = RX_BUFLEN - residual - 2;
- if (nb < (ETHERMINPACKET - ETHERCRC)) {
- skb = NULL;
- dev->stats.rx_length_errors++;
- dev->stats.rx_errors++;
- } else {
- skb = bp->rx_bufs[i];
- bp->rx_bufs[i] = NULL;
- }
- if (skb != NULL) {
- nb -= ETHERCRC;
- skb_put(skb, nb);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- ++dev->stats.rx_packets;
- dev->stats.rx_bytes += nb;
- } else {
- ++dev->stats.rx_dropped;
- }
- if ((skb = bp->rx_bufs[i]) == NULL) {
- bp->rx_bufs[i] = skb = dev_alloc_skb(RX_BUFLEN+2);
- if (skb != NULL)
- skb_reserve(bp->rx_bufs[i], 2);
- }
- bmac_construct_rxbuff(skb, &bp->rx_cmds[i]);
- st_le16(&cp->res_count, 0);
- st_le16(&cp->xfer_status, 0);
- last = i;
- if (++i >= N_RX_RING) i = 0;
- }
-
- if (last != -1) {
- bp->rx_fill = last;
- bp->rx_empty = i;
- }
-
- dbdma_continue(rd);
- spin_unlock_irqrestore(&bp->lock, flags);
-
- if (rxintcount < 10) {
- XXDEBUG(("bmac_rxdma_intr done\n"));
- }
- return IRQ_HANDLED;
-}
-
-static int txintcount;
-
-static irqreturn_t bmac_txdma_intr(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct bmac_data *bp = netdev_priv(dev);
- volatile struct dbdma_cmd *cp;
- int stat;
- unsigned long flags;
-
- spin_lock_irqsave(&bp->lock, flags);
-
- if (txintcount++ < 10) {
- XXDEBUG(("bmac_txdma_intr\n"));
- }
-
- /* del_timer(&bp->tx_timeout); */
- /* bp->timeout_active = 0; */
-
- while (1) {
- cp = &bp->tx_cmds[bp->tx_empty];
- stat = ld_le16(&cp->xfer_status);
- if (txintcount < 10) {
- XXDEBUG(("bmac_txdma_xfer_stat=%#0x\n", stat));
- }
- if (!(stat & ACTIVE)) {
- /*
- * status field might not have been filled by DBDMA
- */
- if (cp == bus_to_virt(in_le32(&bp->tx_dma->cmdptr)))
- break;
- }
-
- if (bp->tx_bufs[bp->tx_empty]) {
- ++dev->stats.tx_packets;
- dev_kfree_skb_irq(bp->tx_bufs[bp->tx_empty]);
- }
- bp->tx_bufs[bp->tx_empty] = NULL;
- bp->tx_fullup = 0;
- netif_wake_queue(dev);
- if (++bp->tx_empty >= N_TX_RING)
- bp->tx_empty = 0;
- if (bp->tx_empty == bp->tx_fill)
- break;
- }
-
- spin_unlock_irqrestore(&bp->lock, flags);
-
- if (txintcount < 10) {
- XXDEBUG(("bmac_txdma_intr done->bmac_start\n"));
- }
-
- bmac_start(dev);
- return IRQ_HANDLED;
-}
-
-#ifndef SUNHME_MULTICAST
-/* Real fast bit-reversal algorithm, 6-bit values */
-static int reverse6[64] = {
- 0x0,0x20,0x10,0x30,0x8,0x28,0x18,0x38,
- 0x4,0x24,0x14,0x34,0xc,0x2c,0x1c,0x3c,
- 0x2,0x22,0x12,0x32,0xa,0x2a,0x1a,0x3a,
- 0x6,0x26,0x16,0x36,0xe,0x2e,0x1e,0x3e,
- 0x1,0x21,0x11,0x31,0x9,0x29,0x19,0x39,
- 0x5,0x25,0x15,0x35,0xd,0x2d,0x1d,0x3d,
- 0x3,0x23,0x13,0x33,0xb,0x2b,0x1b,0x3b,
- 0x7,0x27,0x17,0x37,0xf,0x2f,0x1f,0x3f
-};
-
-static unsigned int
-crc416(unsigned int curval, unsigned short nxtval)
-{
- register unsigned int counter, cur = curval, next = nxtval;
- register int high_crc_set, low_data_set;
-
- /* Swap bytes */
- next = ((next & 0x00FF) << 8) | (next >> 8);
-
- /* Compute bit-by-bit */
- for (counter = 0; counter < 16; ++counter) {
- /* is high CRC bit set? */
- if ((cur & 0x80000000) == 0) high_crc_set = 0;
- else high_crc_set = 1;
-
- cur = cur << 1;
-
- if ((next & 0x0001) == 0) low_data_set = 0;
- else low_data_set = 1;
-
- next = next >> 1;
-
- /* do the XOR */
- if (high_crc_set ^ low_data_set) cur = cur ^ ENET_CRCPOLY;
- }
- return cur;
-}
-
-static unsigned int
-bmac_crc(unsigned short *address)
-{
- unsigned int newcrc;
-
- XXDEBUG(("bmac_crc: addr=%#04x, %#04x, %#04x\n", *address, address[1], address[2]));
- newcrc = crc416(0xffffffff, *address); /* address bits 47 - 32 */
- newcrc = crc416(newcrc, address[1]); /* address bits 31 - 16 */
- newcrc = crc416(newcrc, address[2]); /* address bits 15 - 0 */
-
- return(newcrc);
-}
-
-/*
- * Add requested mcast addr to BMac's hash table filter.
- *
- */
-
-static void
-bmac_addhash(struct bmac_data *bp, unsigned char *addr)
-{
- unsigned int crc;
- unsigned short mask;
-
- if (!(*addr)) return;
- crc = bmac_crc((unsigned short *)addr) & 0x3f; /* Big-endian alert! */
- crc = reverse6[crc]; /* Hyperfast bit-reversing algorithm */
- if (bp->hash_use_count[crc]++) return; /* This bit is already set */
- mask = crc % 16;
- mask = (unsigned char)1 << mask;
- bp->hash_use_count[crc/16] |= mask;
-}
-
-static void
-bmac_removehash(struct bmac_data *bp, unsigned char *addr)
-{
- unsigned int crc;
- unsigned char mask;
-
- /* Now, delete the address from the filter copy, as indicated */
- crc = bmac_crc((unsigned short *)addr) & 0x3f; /* Big-endian alert! */
- crc = reverse6[crc]; /* Hyperfast bit-reversing algorithm */
- if (bp->hash_use_count[crc] == 0) return; /* That bit wasn't in use! */
- if (--bp->hash_use_count[crc]) return; /* That bit is still in use */
- mask = crc % 16;
- mask = ((unsigned char)1 << mask) ^ 0xffff; /* To turn off bit */
- bp->hash_table_mask[crc/16] &= mask;
-}
-
-/*
- * Sync the adapter with the software copy of the multicast mask
- * (logical address filter).
- */
-
-static void
-bmac_rx_off(struct net_device *dev)
-{
- unsigned short rx_cfg;
-
- rx_cfg = bmread(dev, RXCFG);
- rx_cfg &= ~RxMACEnable;
- bmwrite(dev, RXCFG, rx_cfg);
- do {
- rx_cfg = bmread(dev, RXCFG);
- } while (rx_cfg & RxMACEnable);
-}
-
-unsigned short
-bmac_rx_on(struct net_device *dev, int hash_enable, int promisc_enable)
-{
- unsigned short rx_cfg;
-
- rx_cfg = bmread(dev, RXCFG);
- rx_cfg |= RxMACEnable;
- if (hash_enable) rx_cfg |= RxHashFilterEnable;
- else rx_cfg &= ~RxHashFilterEnable;
- if (promisc_enable) rx_cfg |= RxPromiscEnable;
- else rx_cfg &= ~RxPromiscEnable;
- bmwrite(dev, RXRST, RxResetValue);
- bmwrite(dev, RXFIFOCSR, 0); /* first disable rxFIFO */
- bmwrite(dev, RXFIFOCSR, RxFIFOEnable );
- bmwrite(dev, RXCFG, rx_cfg );
- return rx_cfg;
-}
-
-static void
-bmac_update_hash_table_mask(struct net_device *dev, struct bmac_data *bp)
-{
- bmwrite(dev, BHASH3, bp->hash_table_mask[0]); /* bits 15 - 0 */
- bmwrite(dev, BHASH2, bp->hash_table_mask[1]); /* bits 31 - 16 */
- bmwrite(dev, BHASH1, bp->hash_table_mask[2]); /* bits 47 - 32 */
- bmwrite(dev, BHASH0, bp->hash_table_mask[3]); /* bits 63 - 48 */
-}
-
-#if 0
-static void
-bmac_add_multi(struct net_device *dev,
- struct bmac_data *bp, unsigned char *addr)
-{
- /* XXDEBUG(("bmac: enter bmac_add_multi\n")); */
- bmac_addhash(bp, addr);
- bmac_rx_off(dev);
- bmac_update_hash_table_mask(dev, bp);
- bmac_rx_on(dev, 1, (dev->flags & IFF_PROMISC)? 1 : 0);
- /* XXDEBUG(("bmac: exit bmac_add_multi\n")); */
-}
-
-static void
-bmac_remove_multi(struct net_device *dev,
- struct bmac_data *bp, unsigned char *addr)
-{
- bmac_removehash(bp, addr);
- bmac_rx_off(dev);
- bmac_update_hash_table_mask(dev, bp);
- bmac_rx_on(dev, 1, (dev->flags & IFF_PROMISC)? 1 : 0);
-}
-#endif
-
-/* Set or clear the multicast filter for this adaptor.
- num_addrs == -1 Promiscuous mode, receive all packets
- num_addrs == 0 Normal mode, clear multicast list
- num_addrs > 0 Multicast mode, receive normal and MC packets, and do
- best-effort filtering.
- */
-static void bmac_set_multicast(struct net_device *dev)
-{
- struct netdev_hw_addr *ha;
- struct bmac_data *bp = netdev_priv(dev);
- int num_addrs = netdev_mc_count(dev);
- unsigned short rx_cfg;
- int i;
-
- if (bp->sleeping)
- return;
-
- XXDEBUG(("bmac: enter bmac_set_multicast, n_addrs=%d\n", num_addrs));
-
- if((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {
- for (i=0; i<4; i++) bp->hash_table_mask[i] = 0xffff;
- bmac_update_hash_table_mask(dev, bp);
- rx_cfg = bmac_rx_on(dev, 1, 0);
- XXDEBUG(("bmac: all multi, rx_cfg=%#08x\n"));
- } else if ((dev->flags & IFF_PROMISC) || (num_addrs < 0)) {
- rx_cfg = bmread(dev, RXCFG);
- rx_cfg |= RxPromiscEnable;
- bmwrite(dev, RXCFG, rx_cfg);
- rx_cfg = bmac_rx_on(dev, 0, 1);
- XXDEBUG(("bmac: promisc mode enabled, rx_cfg=%#08x\n", rx_cfg));
- } else {
- for (i=0; i<4; i++) bp->hash_table_mask[i] = 0;
- for (i=0; i<64; i++) bp->hash_use_count[i] = 0;
- if (num_addrs == 0) {
- rx_cfg = bmac_rx_on(dev, 0, 0);
- XXDEBUG(("bmac: multi disabled, rx_cfg=%#08x\n", rx_cfg));
- } else {
- netdev_for_each_mc_addr(ha, dev)
- bmac_addhash(bp, ha->addr);
- bmac_update_hash_table_mask(dev, bp);
- rx_cfg = bmac_rx_on(dev, 1, 0);
- XXDEBUG(("bmac: multi enabled, rx_cfg=%#08x\n", rx_cfg));
- }
- }
- /* XXDEBUG(("bmac: exit bmac_set_multicast\n")); */
-}
-#else /* ifdef SUNHME_MULTICAST */
-
-/* The version of set_multicast below was lifted from sunhme.c */
-
-static void bmac_set_multicast(struct net_device *dev)
-{
- struct netdev_hw_addr *ha;
- int i;
- unsigned short rx_cfg;
- u32 crc;
-
- if((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {
- bmwrite(dev, BHASH0, 0xffff);
- bmwrite(dev, BHASH1, 0xffff);
- bmwrite(dev, BHASH2, 0xffff);
- bmwrite(dev, BHASH3, 0xffff);
- } else if(dev->flags & IFF_PROMISC) {
- rx_cfg = bmread(dev, RXCFG);
- rx_cfg |= RxPromiscEnable;
- bmwrite(dev, RXCFG, rx_cfg);
- } else {
- u16 hash_table[4];
-
- rx_cfg = bmread(dev, RXCFG);
- rx_cfg &= ~RxPromiscEnable;
- bmwrite(dev, RXCFG, rx_cfg);
-
- for(i = 0; i < 4; i++) hash_table[i] = 0;
-
- netdev_for_each_mc_addr(ha, dev) {
- crc = ether_crc_le(6, ha->addr);
- crc >>= 26;
- hash_table[crc >> 4] |= 1 << (crc & 0xf);
- }
- bmwrite(dev, BHASH0, hash_table[0]);
- bmwrite(dev, BHASH1, hash_table[1]);
- bmwrite(dev, BHASH2, hash_table[2]);
- bmwrite(dev, BHASH3, hash_table[3]);
- }
-}
-#endif /* SUNHME_MULTICAST */
-
-static int miscintcount;
-
-static irqreturn_t bmac_misc_intr(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- unsigned int status = bmread(dev, STATUS);
- if (miscintcount++ < 10) {
- XXDEBUG(("bmac_misc_intr\n"));
- }
- /* XXDEBUG(("bmac_misc_intr, status=%#08x\n", status)); */
- /* bmac_txdma_intr_inner(irq, dev_id); */
- /* if (status & FrameReceived) dev->stats.rx_dropped++; */
- if (status & RxErrorMask) dev->stats.rx_errors++;
- if (status & RxCRCCntExp) dev->stats.rx_crc_errors++;
- if (status & RxLenCntExp) dev->stats.rx_length_errors++;
- if (status & RxOverFlow) dev->stats.rx_over_errors++;
- if (status & RxAlignCntExp) dev->stats.rx_frame_errors++;
-
- /* if (status & FrameSent) dev->stats.tx_dropped++; */
- if (status & TxErrorMask) dev->stats.tx_errors++;
- if (status & TxUnderrun) dev->stats.tx_fifo_errors++;
- if (status & TxNormalCollExp) dev->stats.collisions++;
- return IRQ_HANDLED;
-}
-
-/*
- * Procedure for reading EEPROM
- */
-#define SROMAddressLength 5
-#define DataInOn 0x0008
-#define DataInOff 0x0000
-#define Clk 0x0002
-#define ChipSelect 0x0001
-#define SDIShiftCount 3
-#define SD0ShiftCount 2
-#define DelayValue 1000 /* number of microseconds */
-#define SROMStartOffset 10 /* this is in words */
-#define SROMReadCount 3 /* number of words to read from SROM */
-#define SROMAddressBits 6
-#define EnetAddressOffset 20
-
-static unsigned char
-bmac_clock_out_bit(struct net_device *dev)
-{
- unsigned short data;
- unsigned short val;
-
- bmwrite(dev, SROMCSR, ChipSelect | Clk);
- udelay(DelayValue);
-
- data = bmread(dev, SROMCSR);
- udelay(DelayValue);
- val = (data >> SD0ShiftCount) & 1;
-
- bmwrite(dev, SROMCSR, ChipSelect);
- udelay(DelayValue);
-
- return val;
-}
-
-static void
-bmac_clock_in_bit(struct net_device *dev, unsigned int val)
-{
- unsigned short data;
-
- if (val != 0 && val != 1) return;
-
- data = (val << SDIShiftCount);
- bmwrite(dev, SROMCSR, data | ChipSelect );
- udelay(DelayValue);
-
- bmwrite(dev, SROMCSR, data | ChipSelect | Clk );
- udelay(DelayValue);
-
- bmwrite(dev, SROMCSR, data | ChipSelect);
- udelay(DelayValue);
-}
-
-static void
-reset_and_select_srom(struct net_device *dev)
-{
- /* first reset */
- bmwrite(dev, SROMCSR, 0);
- udelay(DelayValue);
-
- /* send it the read command (110) */
- bmac_clock_in_bit(dev, 1);
- bmac_clock_in_bit(dev, 1);
- bmac_clock_in_bit(dev, 0);
-}
-
-static unsigned short
-read_srom(struct net_device *dev, unsigned int addr, unsigned int addr_len)
-{
- unsigned short data, val;
- int i;
-
- /* send out the address we want to read from */
- for (i = 0; i < addr_len; i++) {
- val = addr >> (addr_len-i-1);
- bmac_clock_in_bit(dev, val & 1);
- }
-
- /* Now read in the 16-bit data */
- data = 0;
- for (i = 0; i < 16; i++) {
- val = bmac_clock_out_bit(dev);
- data <<= 1;
- data |= val;
- }
- bmwrite(dev, SROMCSR, 0);
-
- return data;
-}
-
-/*
- * It looks like Cogent and SMC use different methods for calculating
- * checksums. What a pain..
- */
-
-static int
-bmac_verify_checksum(struct net_device *dev)
-{
- unsigned short data, storedCS;
-
- reset_and_select_srom(dev);
- data = read_srom(dev, 3, SROMAddressBits);
- storedCS = ((data >> 8) & 0x0ff) | ((data << 8) & 0xff00);
-
- return 0;
-}
-
-
-static void
-bmac_get_station_address(struct net_device *dev, unsigned char *ea)
-{
- int i;
- unsigned short data;
-
- for (i = 0; i < 6; i++)
- {
- reset_and_select_srom(dev);
- data = read_srom(dev, i + EnetAddressOffset/2, SROMAddressBits);
- ea[2*i] = bitrev8(data & 0x0ff);
- ea[2*i+1] = bitrev8((data >> 8) & 0x0ff);
- }
-}
-
-static void bmac_reset_and_enable(struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- unsigned long flags;
- struct sk_buff *skb;
- unsigned char *data;
-
- spin_lock_irqsave(&bp->lock, flags);
- bmac_enable_and_reset_chip(dev);
- bmac_init_tx_ring(bp);
- bmac_init_rx_ring(bp);
- bmac_init_chip(dev);
- bmac_start_chip(dev);
- bmwrite(dev, INTDISABLE, EnableNormal);
- bp->sleeping = 0;
-
- /*
- * It seems that the bmac can't receive until it's transmitted
- * a packet. So we give it a dummy packet to transmit.
- */
- skb = dev_alloc_skb(ETHERMINPACKET);
- if (skb != NULL) {
- data = skb_put(skb, ETHERMINPACKET);
- memset(data, 0, ETHERMINPACKET);
- memcpy(data, dev->dev_addr, 6);
- memcpy(data+6, dev->dev_addr, 6);
- bmac_transmit_packet(skb, dev);
- }
- spin_unlock_irqrestore(&bp->lock, flags);
-}
-
-static const struct ethtool_ops bmac_ethtool_ops = {
- .get_link = ethtool_op_get_link,
-};
-
-static const struct net_device_ops bmac_netdev_ops = {
- .ndo_open = bmac_open,
- .ndo_stop = bmac_close,
- .ndo_start_xmit = bmac_output,
- .ndo_set_multicast_list = bmac_set_multicast,
- .ndo_set_mac_address = bmac_set_address,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static int __devinit bmac_probe(struct macio_dev *mdev, const struct of_device_id *match)
-{
- int j, rev, ret;
- struct bmac_data *bp;
- const unsigned char *prop_addr;
- unsigned char addr[6];
- struct net_device *dev;
- int is_bmac_plus = ((int)match->data) != 0;
-
- if (macio_resource_count(mdev) != 3 || macio_irq_count(mdev) != 3) {
- printk(KERN_ERR "BMAC: can't use, need 3 addrs and 3 intrs\n");
- return -ENODEV;
- }
- prop_addr = of_get_property(macio_get_of_node(mdev),
- "mac-address", NULL);
- if (prop_addr == NULL) {
- prop_addr = of_get_property(macio_get_of_node(mdev),
- "local-mac-address", NULL);
- if (prop_addr == NULL) {
- printk(KERN_ERR "BMAC: Can't get mac-address\n");
- return -ENODEV;
- }
- }
- memcpy(addr, prop_addr, sizeof(addr));
-
- dev = alloc_etherdev(PRIV_BYTES);
- if (!dev) {
- printk(KERN_ERR "BMAC: alloc_etherdev failed, out of memory\n");
- return -ENOMEM;
- }
-
- bp = netdev_priv(dev);
- SET_NETDEV_DEV(dev, &mdev->ofdev.dev);
- macio_set_drvdata(mdev, dev);
-
- bp->mdev = mdev;
- spin_lock_init(&bp->lock);
-
- if (macio_request_resources(mdev, "bmac")) {
- printk(KERN_ERR "BMAC: can't request IO resource !\n");
- goto out_free;
- }
-
- dev->base_addr = (unsigned long)
- ioremap(macio_resource_start(mdev, 0), macio_resource_len(mdev, 0));
- if (dev->base_addr == 0)
- goto out_release;
-
- dev->irq = macio_irq(mdev, 0);
-
- bmac_enable_and_reset_chip(dev);
- bmwrite(dev, INTDISABLE, DisableAll);
-
- rev = addr[0] == 0 && addr[1] == 0xA0;
- for (j = 0; j < 6; ++j)
- dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j];
-
- /* Enable chip without interrupts for now */
- bmac_enable_and_reset_chip(dev);
- bmwrite(dev, INTDISABLE, DisableAll);
-
- dev->netdev_ops = &bmac_netdev_ops;
- dev->ethtool_ops = &bmac_ethtool_ops;
-
- bmac_get_station_address(dev, addr);
- if (bmac_verify_checksum(dev) != 0)
- goto err_out_iounmap;
-
- bp->is_bmac_plus = is_bmac_plus;
- bp->tx_dma = ioremap(macio_resource_start(mdev, 1), macio_resource_len(mdev, 1));
- if (!bp->tx_dma)
- goto err_out_iounmap;
- bp->tx_dma_intr = macio_irq(mdev, 1);
- bp->rx_dma = ioremap(macio_resource_start(mdev, 2), macio_resource_len(mdev, 2));
- if (!bp->rx_dma)
- goto err_out_iounmap_tx;
- bp->rx_dma_intr = macio_irq(mdev, 2);
-
- bp->tx_cmds = (volatile struct dbdma_cmd *) DBDMA_ALIGN(bp + 1);
- bp->rx_cmds = bp->tx_cmds + N_TX_RING + 1;
-
- bp->queue = (struct sk_buff_head *)(bp->rx_cmds + N_RX_RING + 1);
- skb_queue_head_init(bp->queue);
-
- init_timer(&bp->tx_timeout);
-
- ret = request_irq(dev->irq, bmac_misc_intr, 0, "BMAC-misc", dev);
- if (ret) {
- printk(KERN_ERR "BMAC: can't get irq %d\n", dev->irq);
- goto err_out_iounmap_rx;
- }
- ret = request_irq(bp->tx_dma_intr, bmac_txdma_intr, 0, "BMAC-txdma", dev);
- if (ret) {
- printk(KERN_ERR "BMAC: can't get irq %d\n", bp->tx_dma_intr);
- goto err_out_irq0;
- }
- ret = request_irq(bp->rx_dma_intr, bmac_rxdma_intr, 0, "BMAC-rxdma", dev);
- if (ret) {
- printk(KERN_ERR "BMAC: can't get irq %d\n", bp->rx_dma_intr);
- goto err_out_irq1;
- }
-
- /* Mask chip interrupts and disable chip, will be
- * re-enabled on open()
- */
- disable_irq(dev->irq);
- pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);
-
- if (register_netdev(dev) != 0) {
- printk(KERN_ERR "BMAC: Ethernet registration failed\n");
- goto err_out_irq2;
- }
-
- printk(KERN_INFO "%s: BMAC%s at %pM",
- dev->name, (is_bmac_plus ? "+" : ""), dev->dev_addr);
- XXDEBUG((", base_addr=%#0lx", dev->base_addr));
- printk("\n");
-
- return 0;
-
-err_out_irq2:
- free_irq(bp->rx_dma_intr, dev);
-err_out_irq1:
- free_irq(bp->tx_dma_intr, dev);
-err_out_irq0:
- free_irq(dev->irq, dev);
-err_out_iounmap_rx:
- iounmap(bp->rx_dma);
-err_out_iounmap_tx:
- iounmap(bp->tx_dma);
-err_out_iounmap:
- iounmap((void __iomem *)dev->base_addr);
-out_release:
- macio_release_resources(mdev);
-out_free:
- pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);
- free_netdev(dev);
-
- return -ENODEV;
-}
-
-static int bmac_open(struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- /* XXDEBUG(("bmac: enter open\n")); */
- /* reset the chip */
- bp->opened = 1;
- bmac_reset_and_enable(dev);
- enable_irq(dev->irq);
- return 0;
-}
-
-static int bmac_close(struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
- volatile struct dbdma_regs __iomem *td = bp->tx_dma;
- unsigned short config;
- int i;
-
- bp->sleeping = 1;
-
- /* disable rx and tx */
- config = bmread(dev, RXCFG);
- bmwrite(dev, RXCFG, (config & ~RxMACEnable));
-
- config = bmread(dev, TXCFG);
- bmwrite(dev, TXCFG, (config & ~TxMACEnable));
-
- bmwrite(dev, INTDISABLE, DisableAll); /* disable all intrs */
-
- /* disable rx and tx dma */
- st_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */
- st_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */
-
- /* free some skb's */
- XXDEBUG(("bmac: free rx bufs\n"));
- for (i=0; i<N_RX_RING; i++) {
- if (bp->rx_bufs[i] != NULL) {
- dev_kfree_skb(bp->rx_bufs[i]);
- bp->rx_bufs[i] = NULL;
- }
- }
- XXDEBUG(("bmac: free tx bufs\n"));
- for (i = 0; i<N_TX_RING; i++) {
- if (bp->tx_bufs[i] != NULL) {
- dev_kfree_skb(bp->tx_bufs[i]);
- bp->tx_bufs[i] = NULL;
- }
- }
- XXDEBUG(("bmac: all bufs freed\n"));
-
- bp->opened = 0;
- disable_irq(dev->irq);
- pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);
-
- return 0;
-}
-
-static void
-bmac_start(struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- int i;
- struct sk_buff *skb;
- unsigned long flags;
-
- if (bp->sleeping)
- return;
-
- spin_lock_irqsave(&bp->lock, flags);
- while (1) {
- i = bp->tx_fill + 1;
- if (i >= N_TX_RING)
- i = 0;
- if (i == bp->tx_empty)
- break;
- skb = skb_dequeue(bp->queue);
- if (skb == NULL)
- break;
- bmac_transmit_packet(skb, dev);
- }
- spin_unlock_irqrestore(&bp->lock, flags);
-}
-
-static int
-bmac_output(struct sk_buff *skb, struct net_device *dev)
-{
- struct bmac_data *bp = netdev_priv(dev);
- skb_queue_tail(bp->queue, skb);
- bmac_start(dev);
- return NETDEV_TX_OK;
-}
-
-static void bmac_tx_timeout(unsigned long data)
-{
- struct net_device *dev = (struct net_device *) data;
- struct bmac_data *bp = netdev_priv(dev);
- volatile struct dbdma_regs __iomem *td = bp->tx_dma;
- volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
- volatile struct dbdma_cmd *cp;
- unsigned long flags;
- unsigned short config, oldConfig;
- int i;
-
- XXDEBUG(("bmac: tx_timeout called\n"));
- spin_lock_irqsave(&bp->lock, flags);
- bp->timeout_active = 0;
-
- /* update various counters */
-/* bmac_handle_misc_intrs(bp, 0); */
-
- cp = &bp->tx_cmds[bp->tx_empty];
-/* XXDEBUG((KERN_DEBUG "bmac: tx dmastat=%x %x runt=%d pr=%x fs=%x fc=%x\n", */
-/* ld_le32(&td->status), ld_le16(&cp->xfer_status), bp->tx_bad_runt, */
-/* mb->pr, mb->xmtfs, mb->fifofc)); */
-
- /* turn off both tx and rx and reset the chip */
- config = bmread(dev, RXCFG);
- bmwrite(dev, RXCFG, (config & ~RxMACEnable));
- config = bmread(dev, TXCFG);
- bmwrite(dev, TXCFG, (config & ~TxMACEnable));
- out_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE|ACTIVE|DEAD));
- printk(KERN_ERR "bmac: transmit timeout - resetting\n");
- bmac_enable_and_reset_chip(dev);
-
- /* restart rx dma */
- cp = bus_to_virt(ld_le32(&rd->cmdptr));
- out_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE|ACTIVE|DEAD));
- out_le16(&cp->xfer_status, 0);
- out_le32(&rd->cmdptr, virt_to_bus(cp));
- out_le32(&rd->control, DBDMA_SET(RUN|WAKE));
-
- /* fix up the transmit side */
- XXDEBUG((KERN_DEBUG "bmac: tx empty=%d fill=%d fullup=%d\n",
- bp->tx_empty, bp->tx_fill, bp->tx_fullup));
- i = bp->tx_empty;
- ++dev->stats.tx_errors;
- if (i != bp->tx_fill) {
- dev_kfree_skb(bp->tx_bufs[i]);
- bp->tx_bufs[i] = NULL;
- if (++i >= N_TX_RING) i = 0;
- bp->tx_empty = i;
- }
- bp->tx_fullup = 0;
- netif_wake_queue(dev);
- if (i != bp->tx_fill) {
- cp = &bp->tx_cmds[i];
- out_le16(&cp->xfer_status, 0);
- out_le16(&cp->command, OUTPUT_LAST);
- out_le32(&td->cmdptr, virt_to_bus(cp));
- out_le32(&td->control, DBDMA_SET(RUN));
- /* bmac_set_timeout(dev); */
- XXDEBUG((KERN_DEBUG "bmac: starting %d\n", i));
- }
-
- /* turn it back on */
- oldConfig = bmread(dev, RXCFG);
- bmwrite(dev, RXCFG, oldConfig | RxMACEnable );
- oldConfig = bmread(dev, TXCFG);
- bmwrite(dev, TXCFG, oldConfig | TxMACEnable );
-
- spin_unlock_irqrestore(&bp->lock, flags);
-}
-
-#if 0
-static void dump_dbdma(volatile struct dbdma_cmd *cp,int count)
-{
- int i,*ip;
-
- for (i=0;i< count;i++) {
- ip = (int*)(cp+i);
-
- printk("dbdma req 0x%x addr 0x%x baddr 0x%x xfer/res 0x%x\n",
- ld_le32(ip+0),
- ld_le32(ip+1),
- ld_le32(ip+2),
- ld_le32(ip+3));
- }
-
-}
-#endif
-
-#if 0
-static int
-bmac_proc_info(char *buffer, char **start, off_t offset, int length)
-{
- int len = 0;
- off_t pos = 0;
- off_t begin = 0;
- int i;
-
- if (bmac_devs == NULL)
- return -ENOSYS;
-
- len += sprintf(buffer, "BMAC counters & registers\n");
-
- for (i = 0; i<N_REG_ENTRIES; i++) {
- len += sprintf(buffer + len, "%s: %#08x\n",
- reg_entries[i].name,
- bmread(bmac_devs, reg_entries[i].reg_offset));
- pos = begin + len;
-
- if (pos < offset) {
- len = 0;
- begin = pos;
- }
-
- if (pos > offset+length) break;
- }
-
- *start = buffer + (offset - begin);
- len -= (offset - begin);
-
- if (len > length) len = length;
-
- return len;
-}
-#endif
-
-static int __devexit bmac_remove(struct macio_dev *mdev)
-{
- struct net_device *dev = macio_get_drvdata(mdev);
- struct bmac_data *bp = netdev_priv(dev);
-
- unregister_netdev(dev);
-
- free_irq(dev->irq, dev);
- free_irq(bp->tx_dma_intr, dev);
- free_irq(bp->rx_dma_intr, dev);
-
- iounmap((void __iomem *)dev->base_addr);
- iounmap(bp->tx_dma);
- iounmap(bp->rx_dma);
-
- macio_release_resources(mdev);
-
- free_netdev(dev);
-
- return 0;
-}
-
-static struct of_device_id bmac_match[] =
-{
- {
- .name = "bmac",
- .data = (void *)0,
- },
- {
- .type = "network",
- .compatible = "bmac+",
- .data = (void *)1,
- },
- {},
-};
-MODULE_DEVICE_TABLE (of, bmac_match);
-
-static struct macio_driver bmac_driver =
-{
- .driver = {
- .name = "bmac",
- .owner = THIS_MODULE,
- .of_match_table = bmac_match,
- },
- .probe = bmac_probe,
- .remove = bmac_remove,
-#ifdef CONFIG_PM
- .suspend = bmac_suspend,
- .resume = bmac_resume,
-#endif
-};
-
-
-static int __init bmac_init(void)
-{
- if (bmac_emergency_rxbuf == NULL) {
- bmac_emergency_rxbuf = kmalloc(RX_BUFLEN, GFP_KERNEL);
- if (bmac_emergency_rxbuf == NULL) {
- printk(KERN_ERR "BMAC: can't allocate emergency RX buffer\n");
- return -ENOMEM;
- }
- }
-
- return macio_register_driver(&bmac_driver);
-}
-
-static void __exit bmac_exit(void)
-{
- macio_unregister_driver(&bmac_driver);
-
- kfree(bmac_emergency_rxbuf);
- bmac_emergency_rxbuf = NULL;
-}
-
-MODULE_AUTHOR("Randy Gobbel/Paul Mackerras");
-MODULE_DESCRIPTION("PowerMac BMAC ethernet driver.");
-MODULE_LICENSE("GPL");
-
-module_init(bmac_init);
-module_exit(bmac_exit);
+++ /dev/null
-/*
- * mace.h - definitions for the registers in the "Big Mac"
- * Ethernet controller found in PowerMac G3 models.
- *
- * Copyright (C) 1998 Randy Gobbel.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/* The "Big MAC" appears to have some parts in common with the Sun "Happy Meal"
- * (HME) controller. See sunhme.h
- */
-
-
-/* register offsets */
-
-/* global status and control */
-#define XIFC 0x000 /* low-level interface control */
-# define TxOutputEnable 0x0001 /* output driver enable */
-# define XIFLoopback 0x0002 /* Loopback-mode XIF enable */
-# define MIILoopback 0x0004 /* Loopback-mode MII enable */
-# define MIILoopbackBits 0x0006
-# define MIIBuffDisable 0x0008 /* MII receive buffer disable */
-# define SQETestEnable 0x0010 /* SQE test enable */
-# define SQETimeWindow 0x03e0 /* SQE time window */
-# define XIFLanceMode 0x0010 /* Lance mode enable */
-# define XIFLanceIPG0 0x03e0 /* Lance mode IPG0 */
-#define TXFIFOCSR 0x100 /* transmit FIFO control */
-# define TxFIFOEnable 0x0001
-#define TXTH 0x110 /* transmit threshold */
-# define TxThreshold 0x0004
-#define RXFIFOCSR 0x120 /* receive FIFO control */
-# define RxFIFOEnable 0x0001
-#define MEMADD 0x130 /* memory address, unknown function */
-#define MEMDATAHI 0x140 /* memory data high, presently unused in driver */
-#define MEMDATALO 0x150 /* memory data low, presently unused in driver */
-#define XCVRIF 0x160 /* transceiver interface control */
-# define COLActiveLow 0x0002
-# define SerialMode 0x0004
-# define ClkBit 0x0008
-# define LinkStatus 0x0100
-#define CHIPID 0x170 /* chip ID */
-#define MIFCSR 0x180 /* ??? */
-#define SROMCSR 0x190 /* SROM control */
-# define ChipSelect 0x0001
-# define Clk 0x0002
-#define TXPNTR 0x1a0 /* transmit pointer */
-#define RXPNTR 0x1b0 /* receive pointer */
-#define STATUS 0x200 /* status--reading this clears it */
-#define INTDISABLE 0x210 /* interrupt enable/disable control */
-/* bits below are the same in both STATUS and INTDISABLE registers */
-# define FrameReceived 0x00000001 /* Received a frame */
-# define RxFrameCntExp 0x00000002 /* Receive frame counter expired */
-# define RxAlignCntExp 0x00000004 /* Align-error counter expired */
-# define RxCRCCntExp 0x00000008 /* CRC-error counter expired */
-# define RxLenCntExp 0x00000010 /* Length-error counter expired */
-# define RxOverFlow 0x00000020 /* Receive FIFO overflow */
-# define RxCodeViolation 0x00000040 /* Code-violation counter expired */
-# define SQETestError 0x00000080 /* Test error in XIF for SQE */
-# define FrameSent 0x00000100 /* Transmitted a frame */
-# define TxUnderrun 0x00000200 /* Transmit FIFO underrun */
-# define TxMaxSizeError 0x00000400 /* Max-packet size error */
-# define TxNormalCollExp 0x00000800 /* Normal-collision counter expired */
-# define TxExcessCollExp 0x00001000 /* Excess-collision counter expired */
-# define TxLateCollExp 0x00002000 /* Late-collision counter expired */
-# define TxNetworkCollExp 0x00004000 /* First-collision counter expired */
-# define TxDeferTimerExp 0x00008000 /* Defer-timer expired */
-# define RxFIFOToHost 0x00010000 /* Data moved from FIFO to host */
-# define RxNoDescriptors 0x00020000 /* No more receive descriptors */
-# define RxDMAError 0x00040000 /* Error during receive DMA */
-# define RxDMALateErr 0x00080000 /* Receive DMA, data late */
-# define RxParityErr 0x00100000 /* Parity error during receive DMA */
-# define RxTagError 0x00200000 /* Tag error during receive DMA */
-# define TxEOPError 0x00400000 /* Tx descriptor did not have EOP set */
-# define MIFIntrEvent 0x00800000 /* MIF is signaling an interrupt */
-# define TxHostToFIFO 0x01000000 /* Data moved from host to FIFO */
-# define TxFIFOAllSent 0x02000000 /* Transmitted all packets in FIFO */
-# define TxDMAError 0x04000000 /* Error during transmit DMA */
-# define TxDMALateError 0x08000000 /* Late error during transmit DMA */
-# define TxParityError 0x10000000 /* Parity error during transmit DMA */
-# define TxTagError 0x20000000 /* Tag error during transmit DMA */
-# define PIOError 0x40000000 /* PIO access got an error */
-# define PIOParityError 0x80000000 /* PIO access got a parity error */
-# define DisableAll 0xffffffff
-# define EnableAll 0x00000000
-/* # define NormalIntEvents ~(FrameReceived | FrameSent | TxUnderrun) */
-# define EnableNormal ~(FrameReceived | FrameSent)
-# define EnableErrors (FrameReceived | FrameSent)
-# define RxErrorMask (RxFrameCntExp | RxAlignCntExp | RxCRCCntExp | \
- RxLenCntExp | RxOverFlow | RxCodeViolation)
-# define TxErrorMask (TxUnderrun | TxMaxSizeError | TxExcessCollExp | \
- TxLateCollExp | TxNetworkCollExp | TxDeferTimerExp)
-
-/* transmit control */
-#define TXRST 0x420 /* transmit reset */
-# define TxResetBit 0x0001
-#define TXCFG 0x430 /* transmit configuration control*/
-# define TxMACEnable 0x0001 /* output driver enable */
-# define TxSlowMode 0x0020 /* enable slow mode */
-# define TxIgnoreColl 0x0040 /* ignore transmit collisions */
-# define TxNoFCS 0x0080 /* do not emit FCS */
-# define TxNoBackoff 0x0100 /* no backoff in case of collisions */
-# define TxFullDuplex 0x0200 /* enable full-duplex */
-# define TxNeverGiveUp 0x0400 /* don't give up on transmits */
-#define IPG1 0x440 /* Inter-packet gap 1 */
-#define IPG2 0x450 /* Inter-packet gap 2 */
-#define ALIMIT 0x460 /* Transmit attempt limit */
-#define SLOT 0x470 /* Transmit slot time */
-#define PALEN 0x480 /* Size of transmit preamble */
-#define PAPAT 0x490 /* Pattern for transmit preamble */
-#define TXSFD 0x4a0 /* Transmit frame delimiter */
-#define JAM 0x4b0 /* Jam size */
-#define TXMAX 0x4c0 /* Transmit max pkt size */
-#define TXMIN 0x4d0 /* Transmit min pkt size */
-#define PAREG 0x4e0 /* Count of transmit peak attempts */
-#define DCNT 0x4f0 /* Transmit defer timer */
-#define NCCNT 0x500 /* Transmit normal-collision counter */
-#define NTCNT 0x510 /* Transmit first-collision counter */
-#define EXCNT 0x520 /* Transmit excess-collision counter */
-#define LTCNT 0x530 /* Transmit late-collision counter */
-#define RSEED 0x540 /* Transmit random number seed */
-#define TXSM 0x550 /* Transmit state machine */
-
-/* receive control */
-#define RXRST 0x620 /* receive reset */
-# define RxResetValue 0x0000
-#define RXCFG 0x630 /* receive configuration control */
-# define RxMACEnable 0x0001 /* receiver overall enable */
-# define RxCFGReserved 0x0004
-# define RxPadStripEnab 0x0020 /* enable pad byte stripping */
-# define RxPromiscEnable 0x0040 /* turn on promiscuous mode */
-# define RxNoErrCheck 0x0080 /* disable receive error checking */
-# define RxCRCNoStrip 0x0100 /* disable auto-CRC-stripping */
-# define RxRejectOwnPackets 0x0200 /* don't receive our own packets */
-# define RxGrpPromisck 0x0400 /* enable group promiscuous mode */
-# define RxHashFilterEnable 0x0800 /* enable hash filter */
-# define RxAddrFilterEnable 0x1000 /* enable address filter */
-#define RXMAX 0x640 /* Max receive packet size */
-#define RXMIN 0x650 /* Min receive packet size */
-#define MADD2 0x660 /* our enet address, high part */
-#define MADD1 0x670 /* our enet address, middle part */
-#define MADD0 0x680 /* our enet address, low part */
-#define FRCNT 0x690 /* receive frame counter */
-#define LECNT 0x6a0 /* Receive excess length error counter */
-#define AECNT 0x6b0 /* Receive misaligned error counter */
-#define FECNT 0x6c0 /* Receive CRC error counter */
-#define RXSM 0x6d0 /* Receive state machine */
-#define RXCV 0x6e0 /* Receive code violation */
-
-#define BHASH3 0x700 /* multicast hash register */
-#define BHASH2 0x710 /* multicast hash register */
-#define BHASH1 0x720 /* multicast hash register */
-#define BHASH0 0x730 /* multicast hash register */
-
-#define AFR2 0x740 /* address filtering setup? */
-#define AFR1 0x750 /* address filtering setup? */
-#define AFR0 0x760 /* address filtering setup? */
-#define AFCR 0x770 /* address filter compare register? */
-# define EnableAllCompares 0x0fff
-
-/* bits in XIFC */
+++ /dev/null
-/* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
- * driver for linux.
- */
-
-/*
- Written 1996 by Russell Nelson, with reference to skeleton.c
- written 1993-1994 by Donald Becker.
-
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
-
- The author may be reached at nelson@crynwr.com, Crynwr
- Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
-
- Changelog:
-
- Mike Cruse : mcruse@cti-ltd.com
- : Changes for Linux 2.0 compatibility.
- : Added dev_id parameter in net_interrupt(),
- : request_irq() and free_irq(). Just NULL for now.
-
- Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
- : in net_open() and net_close() so kerneld would know
- : that the module is in use and wouldn't eject the
- : driver prematurely.
-
- Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
- : as an example. Disabled autoprobing in init_module(),
- : not a good thing to do to other devices while Linux
- : is running from all accounts.
-
- Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
-
- Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
- : email: ethernet@crystal.cirrus.com
-
- Alan Cox : Removed 1.2 support, added 2.1 extra counters.
-
- Andrew Morton : Kernel 2.3.48
- : Handle kmalloc() failures
- : Other resource allocation fixes
- : Add SMP locks
- : Integrate Russ Nelson's ALLOW_DMA functionality back in.
- : If ALLOW_DMA is true, make DMA runtime selectable
- : Folded in changes from Cirrus (Melody Lee
- : <klee@crystal.cirrus.com>)
- : Don't call netif_wake_queue() in net_send_packet()
- : Fixed an out-of-mem bug in dma_rx()
- : Updated Documentation/networking/cs89x0.txt
-
- Andrew Morton : Kernel 2.3.99-pre1
- : Use skb_reserve to longword align IP header (two places)
- : Remove a delay loop from dma_rx()
- : Replace '100' with HZ
- : Clean up a couple of skb API abuses
- : Added 'cs89x0_dma=N' kernel boot option
- : Correctly initialise lp->lock in non-module compile
-
- Andrew Morton : Kernel 2.3.99-pre4-1
- : MOD_INC/DEC race fix (see
- : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
-
- Andrew Morton : Kernel 2.4.0-test7-pre2
- : Enhanced EEPROM support to cover more devices,
- : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
- : (Jason Gunthorpe <jgg@ualberta.ca>)
-
- Andrew Morton : Kernel 2.4.0-test11-pre4
- : Use dev->name in request_*() (Andrey Panin)
- : Fix an error-path memleak in init_module()
- : Preserve return value from request_irq()
- : Fix type of `media' module parm (Keith Owens)
- : Use SET_MODULE_OWNER()
- : Tidied up strange request_irq() abuse in net_open().
-
- Andrew Morton : Kernel 2.4.3-pre1
- : Request correct number of pages for DMA (Hugh Dickens)
- : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
- : because unregister_netdev() calls get_stats.
- : Make `version[]' __initdata
- : Uninlined the read/write reg/word functions.
-
- Oskar Schirmer : oskar@scara.com
- : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
-
- Deepak Saxena : dsaxena@plexity.net
- : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
-
- Dmitry Pervushin : dpervushin@ru.mvista.com
- : PNX010X platform support
-
- Deepak Saxena : dsaxena@plexity.net
- : Intel IXDP2351 platform support
-
- Dmitry Pervushin : dpervushin@ru.mvista.com
- : PNX010X platform support
-
- Domenico Andreoli : cavokz@gmail.com
- : QQ2440 platform support
-
-*/
-
-/* Always include 'config.h' first in case the user wants to turn on
- or override something. */
-#include <linux/module.h>
-
-/*
- * Set this to zero to disable DMA code
- *
- * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
- * module options so we don't break any startup scripts.
- */
-#ifndef CONFIG_ISA_DMA_API
-#define ALLOW_DMA 0
-#else
-#define ALLOW_DMA 1
-#endif
-
-/*
- * Set this to zero to remove all the debug statements via
- * dead code elimination
- */
-#define DEBUGGING 1
-
-/*
- Sources:
-
- Crynwr packet driver epktisa.
-
- Crystal Semiconductor data sheets.
-
-*/
-
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/skbuff.h>
-#include <linux/spinlock.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <linux/delay.h>
-#include <linux/gfp.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#if ALLOW_DMA
-#include <asm/dma.h>
-#endif
-
-#include "cs89x0.h"
-
-static char version[] __initdata =
-"cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n";
-
-#define DRV_NAME "cs89x0"
-
-/* First, a few definitions that the brave might change.
- A zero-terminated list of I/O addresses to be probed. Some special flags..
- Addr & 1 = Read back the address port, look for signature and reset
- the page window before probing
- Addr & 3 = Reset the page window and probe
- The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
- but it is possible that a Cirrus board could be plugged into the ISA
- slots. */
-/* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
- them to system IRQ numbers. This mapping is card specific and is set to
- the configuration of the Cirrus Eval board for this chip. */
-#if defined(CONFIG_MACH_IXDP2351)
-static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
-static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
-#elif defined(CONFIG_ARCH_IXDP2X01)
-static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
-static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
-#elif defined(CONFIG_MACH_QQ2440)
-#include <mach/qq2440.h>
-static unsigned int netcard_portlist[] __used __initdata = { QQ2440_CS8900_VIRT_BASE + 0x300, 0 };
-static unsigned int cs8900_irq_map[] = { QQ2440_CS8900_IRQ, 0, 0, 0 };
-#elif defined(CONFIG_MACH_MX31ADS)
-#include <mach/board-mx31ads.h>
-static unsigned int netcard_portlist[] __used __initdata = {
- PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
-};
-static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
-#else
-static unsigned int netcard_portlist[] __used __initdata =
- { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
-static unsigned int cs8900_irq_map[] = {10,11,12,5};
-#endif
-
-#if DEBUGGING
-static unsigned int net_debug = DEBUGGING;
-#else
-#define net_debug 0 /* gcc will remove all the debug code for us */
-#endif
-
-/* The number of low I/O ports used by the ethercard. */
-#define NETCARD_IO_EXTENT 16
-
-/* we allow the user to override various values normally set in the EEPROM */
-#define FORCE_RJ45 0x0001 /* pick one of these three */
-#define FORCE_AUI 0x0002
-#define FORCE_BNC 0x0004
-
-#define FORCE_AUTO 0x0010 /* pick one of these three */
-#define FORCE_HALF 0x0020
-#define FORCE_FULL 0x0030
-
-/* Information that need to be kept for each board. */
-struct net_local {
- int chip_type; /* one of: CS8900, CS8920, CS8920M */
- char chip_revision; /* revision letter of the chip ('A'...) */
- int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
- int auto_neg_cnf; /* auto-negotiation word from EEPROM */
- int adapter_cnf; /* adapter configuration from EEPROM */
- int isa_config; /* ISA configuration from EEPROM */
- int irq_map; /* IRQ map from EEPROM */
- int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
- int curr_rx_cfg; /* a copy of PP_RxCFG */
- int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
- int send_underrun; /* keep track of how many underruns in a row we get */
- int force; /* force various values; see FORCE* above. */
- spinlock_t lock;
-#if ALLOW_DMA
- int use_dma; /* Flag: we're using dma */
- int dma; /* DMA channel */
- int dmasize; /* 16 or 64 */
- unsigned char *dma_buff; /* points to the beginning of the buffer */
- unsigned char *end_dma_buff; /* points to the end of the buffer */
- unsigned char *rx_dma_ptr; /* points to the next packet */
-#endif
-};
-
-/* Index to functions, as function prototypes. */
-
-static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
-static int net_open(struct net_device *dev);
-static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t net_interrupt(int irq, void *dev_id);
-static void set_multicast_list(struct net_device *dev);
-static void net_timeout(struct net_device *dev);
-static void net_rx(struct net_device *dev);
-static int net_close(struct net_device *dev);
-static struct net_device_stats *net_get_stats(struct net_device *dev);
-static void reset_chip(struct net_device *dev);
-static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
-static int get_eeprom_cksum(int off, int len, int *buffer);
-static int set_mac_address(struct net_device *dev, void *addr);
-static void count_rx_errors(int status, struct net_device *dev);
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void net_poll_controller(struct net_device *dev);
-#endif
-#if ALLOW_DMA
-static void get_dma_channel(struct net_device *dev);
-static void release_dma_buff(struct net_local *lp);
-#endif
-
-/* Example routines you must write ;->. */
-#define tx_done(dev) 1
-
-/*
- * Permit 'cs89x0_dma=N' in the kernel boot environment
- */
-#if !defined(MODULE) && (ALLOW_DMA != 0)
-static int g_cs89x0_dma;
-
-static int __init dma_fn(char *str)
-{
- g_cs89x0_dma = simple_strtol(str,NULL,0);
- return 1;
-}
-
-__setup("cs89x0_dma=", dma_fn);
-#endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
-
-#ifndef MODULE
-static int g_cs89x0_media__force;
-
-static int __init media_fn(char *str)
-{
- if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
- else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
- else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
- return 1;
-}
-
-__setup("cs89x0_media=", media_fn);
-
-
-/* Check for a network adaptor of this type, and return '0' iff one exists.
- If dev->base_addr == 0, probe all likely locations.
- If dev->base_addr == 1, always return failure.
- If dev->base_addr == 2, allocate space for the device and return success
- (detachable devices only).
- Return 0 on success.
- */
-
-struct net_device * __init cs89x0_probe(int unit)
-{
- struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
- unsigned *port;
- int err = 0;
- int irq;
- int io;
-
- if (!dev)
- return ERR_PTR(-ENODEV);
-
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- io = dev->base_addr;
- irq = dev->irq;
-
- if (net_debug)
- printk("cs89x0:cs89x0_probe(0x%x)\n", io);
-
- if (io > 0x1ff) { /* Check a single specified location. */
- err = cs89x0_probe1(dev, io, 0);
- } else if (io != 0) { /* Don't probe at all. */
- err = -ENXIO;
- } else {
- for (port = netcard_portlist; *port; port++) {
- if (cs89x0_probe1(dev, *port, 0) == 0)
- break;
- dev->irq = irq;
- }
- if (!*port)
- err = -ENODEV;
- }
- if (err)
- goto out;
- return dev;
-out:
- free_netdev(dev);
- printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
- return ERR_PTR(err);
-}
-#endif
-
-#if defined(CONFIG_MACH_IXDP2351)
-static u16
-readword(unsigned long base_addr, int portno)
-{
- return __raw_readw(base_addr + (portno << 1));
-}
-
-static void
-writeword(unsigned long base_addr, int portno, u16 value)
-{
- __raw_writew(value, base_addr + (portno << 1));
-}
-#elif defined(CONFIG_ARCH_IXDP2X01)
-static u16
-readword(unsigned long base_addr, int portno)
-{
- return __raw_readl(base_addr + (portno << 1));
-}
-
-static void
-writeword(unsigned long base_addr, int portno, u16 value)
-{
- __raw_writel(value, base_addr + (portno << 1));
-}
-#else
-static u16
-readword(unsigned long base_addr, int portno)
-{
- return inw(base_addr + portno);
-}
-
-static void
-writeword(unsigned long base_addr, int portno, u16 value)
-{
- outw(value, base_addr + portno);
-}
-#endif
-
-static void
-readwords(unsigned long base_addr, int portno, void *buf, int length)
-{
- u8 *buf8 = (u8 *)buf;
-
- do {
- u16 tmp16;
-
- tmp16 = readword(base_addr, portno);
- *buf8++ = (u8)tmp16;
- *buf8++ = (u8)(tmp16 >> 8);
- } while (--length);
-}
-
-static void
-writewords(unsigned long base_addr, int portno, void *buf, int length)
-{
- u8 *buf8 = (u8 *)buf;
-
- do {
- u16 tmp16;
-
- tmp16 = *buf8++;
- tmp16 |= (*buf8++) << 8;
- writeword(base_addr, portno, tmp16);
- } while (--length);
-}
-
-static u16
-readreg(struct net_device *dev, u16 regno)
-{
- writeword(dev->base_addr, ADD_PORT, regno);
- return readword(dev->base_addr, DATA_PORT);
-}
-
-static void
-writereg(struct net_device *dev, u16 regno, u16 value)
-{
- writeword(dev->base_addr, ADD_PORT, regno);
- writeword(dev->base_addr, DATA_PORT, value);
-}
-
-static int __init
-wait_eeprom_ready(struct net_device *dev)
-{
- int timeout = jiffies;
- /* check to see if the EEPROM is ready, a timeout is used -
- just in case EEPROM is ready when SI_BUSY in the
- PP_SelfST is clear */
- while(readreg(dev, PP_SelfST) & SI_BUSY)
- if (jiffies - timeout >= 40)
- return -1;
- return 0;
-}
-
-static int __init
-get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
-{
- int i;
-
- if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
- for (i = 0; i < len; i++) {
- if (wait_eeprom_ready(dev) < 0) return -1;
- /* Now send the EEPROM read command and EEPROM location to read */
- writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
- if (wait_eeprom_ready(dev) < 0) return -1;
- buffer[i] = readreg(dev, PP_EEData);
- if (net_debug > 3) printk("%04x ", buffer[i]);
- }
- if (net_debug > 3) printk("\n");
- return 0;
-}
-
-static int __init
-get_eeprom_cksum(int off, int len, int *buffer)
-{
- int i, cksum;
-
- cksum = 0;
- for (i = 0; i < len; i++)
- cksum += buffer[i];
- cksum &= 0xffff;
- if (cksum == 0)
- return 0;
- return -1;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling receive - used by netconsole and other diagnostic tools
- * to allow network i/o with interrupts disabled.
- */
-static void net_poll_controller(struct net_device *dev)
-{
- disable_irq(dev->irq);
- net_interrupt(dev->irq, dev);
- enable_irq(dev->irq);
-}
-#endif
-
-static const struct net_device_ops net_ops = {
- .ndo_open = net_open,
- .ndo_stop = net_close,
- .ndo_tx_timeout = net_timeout,
- .ndo_start_xmit = net_send_packet,
- .ndo_get_stats = net_get_stats,
- .ndo_set_multicast_list = set_multicast_list,
- .ndo_set_mac_address = set_mac_address,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = net_poll_controller,
-#endif
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-/* This is the real probe routine. Linux has a history of friendly device
- probes on the ISA bus. A good device probes avoids doing writes, and
- verifies that the correct device exists and functions.
- Return 0 on success.
- */
-
-static int __init
-cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
-{
- struct net_local *lp = netdev_priv(dev);
- static unsigned version_printed;
- int i;
- int tmp;
- unsigned rev_type = 0;
- int eeprom_buff[CHKSUM_LEN];
- int retval;
-
- /* Initialize the device structure. */
- if (!modular) {
- memset(lp, 0, sizeof(*lp));
- spin_lock_init(&lp->lock);
-#ifndef MODULE
-#if ALLOW_DMA
- if (g_cs89x0_dma) {
- lp->use_dma = 1;
- lp->dma = g_cs89x0_dma;
- lp->dmasize = 16; /* Could make this an option... */
- }
-#endif
- lp->force = g_cs89x0_media__force;
-#endif
-
-#if defined(CONFIG_MACH_QQ2440)
- lp->force |= FORCE_RJ45 | FORCE_FULL;
-#endif
- }
-
- /* Grab the region so we can find another board if autoIRQ fails. */
- /* WTF is going on here? */
- if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
- printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
- DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
- retval = -EBUSY;
- goto out1;
- }
-
- /* if they give us an odd I/O address, then do ONE write to
- the address port, to get it back to address zero, where we
- expect to find the EISA signature word. An IO with a base of 0x3
- will skip the test for the ADD_PORT. */
- if (ioaddr & 1) {
- if (net_debug > 1)
- printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
- if ((ioaddr & 2) != 2)
- if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
- printk(KERN_ERR "%s: bad signature 0x%x\n",
- dev->name, readword(ioaddr & ~3, ADD_PORT));
- retval = -ENODEV;
- goto out2;
- }
- }
-
- ioaddr &= ~3;
- printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
- ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
- writeword(ioaddr, ADD_PORT, PP_ChipID);
-
- tmp = readword(ioaddr, DATA_PORT);
- if (tmp != CHIP_EISA_ID_SIG) {
- printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
- CHIP_EISA_ID_SIG_STR "\n",
- dev->name, ioaddr, DATA_PORT, tmp);
- retval = -ENODEV;
- goto out2;
- }
-
- /* Fill in the 'dev' fields. */
- dev->base_addr = ioaddr;
-
- /* get the chip type */
- rev_type = readreg(dev, PRODUCT_ID_ADD);
- lp->chip_type = rev_type &~ REVISON_BITS;
- lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
-
- /* Check the chip type and revision in order to set the correct send command
- CS8920 revision C and CS8900 revision F can use the faster send. */
- lp->send_cmd = TX_AFTER_381;
- if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
- lp->send_cmd = TX_NOW;
- if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
- lp->send_cmd = TX_NOW;
-
- if (net_debug && version_printed++ == 0)
- printk(version);
-
- printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
- dev->name,
- lp->chip_type==CS8900?'0':'2',
- lp->chip_type==CS8920M?"M":"",
- lp->chip_revision,
- dev->base_addr);
-
- reset_chip(dev);
-
- /* Here we read the current configuration of the chip. If there
- is no Extended EEPROM then the idea is to not disturb the chip
- configuration, it should have been correctly setup by automatic
- EEPROM read on reset. So, if the chip says it read the EEPROM
- the driver will always do *something* instead of complain that
- adapter_cnf is 0. */
-
-
- if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
- (EEPROM_OK|EEPROM_PRESENT)) {
- /* Load the MAC. */
- for (i=0; i < ETH_ALEN/2; i++) {
- unsigned int Addr;
- Addr = readreg(dev, PP_IA+i*2);
- dev->dev_addr[i*2] = Addr & 0xFF;
- dev->dev_addr[i*2+1] = Addr >> 8;
- }
-
- /* Load the Adapter Configuration.
- Note: Barring any more specific information from some
- other source (ie EEPROM+Schematics), we would not know
- how to operate a 10Base2 interface on the AUI port.
- However, since we do read the status of HCB1 and use
- settings that always result in calls to control_dc_dc(dev,0)
- a BNC interface should work if the enable pin
- (dc/dc converter) is on HCB1. It will be called AUI
- however. */
-
- lp->adapter_cnf = 0;
- i = readreg(dev, PP_LineCTL);
- /* Preserve the setting of the HCB1 pin. */
- if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
- lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
- /* Save the sqelch bit */
- if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
- lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
- /* Check if the card is in 10Base-t only mode */
- if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
- lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
- /* Check if the card is in AUI only mode */
- if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
- lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
- /* Check if the card is in Auto mode. */
- if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
- lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
- A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
-
- if (net_debug > 1)
- printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
- dev->name, i, lp->adapter_cnf);
-
- /* IRQ. Other chips already probe, see below. */
- if (lp->chip_type == CS8900)
- lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
-
- printk( "[Cirrus EEPROM] ");
- }
-
- printk("\n");
-
- /* First check to see if an EEPROM is attached. */
-
- if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
- printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
- else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
- printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
- } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
- /* Check if the chip was able to read its own configuration starting
- at 0 in the EEPROM*/
- if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
- (EEPROM_OK|EEPROM_PRESENT))
- printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
-
- } else {
- /* This reads an extended EEPROM that is not documented
- in the CS8900 datasheet. */
-
- /* get transmission control word but keep the autonegotiation bits */
- if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
- /* Store adapter configuration */
- if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
- /* Store ISA configuration */
- lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
- dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
-
- /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
- /* store the initial memory base address */
- for (i = 0; i < ETH_ALEN/2; i++) {
- dev->dev_addr[i*2] = eeprom_buff[i];
- dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
- }
- if (net_debug > 1)
- printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
- dev->name, lp->adapter_cnf);
- }
-
- /* allow them to force multiple transceivers. If they force multiple, autosense */
- {
- int count = 0;
- if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
- if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
- if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
- if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
- else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
- else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
- else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
- }
-
- if (net_debug > 1)
- printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
- dev->name, lp->force, lp->adapter_cnf);
-
- /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
-
- /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
-
- /* FIXME: we don't set the Ethernet address on the command line. Use
- ifconfig IFACE hw ether AABBCCDDEEFF */
-
- printk(KERN_INFO "cs89x0 media %s%s%s",
- (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
- (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
- (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
-
- lp->irq_map = 0xffff;
-
- /* If this is a CS8900 then no pnp soft */
- if (lp->chip_type != CS8900 &&
- /* Check if the ISA IRQ has been set */
- (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
- (i != 0 && i < CS8920_NO_INTS))) {
- if (!dev->irq)
- dev->irq = i;
- } else {
- i = lp->isa_config & INT_NO_MASK;
- if (lp->chip_type == CS8900) {
-#ifdef CONFIG_CS89x0_NONISA_IRQ
- i = cs8900_irq_map[0];
-#else
- /* Translate the IRQ using the IRQ mapping table. */
- if (i >= ARRAY_SIZE(cs8900_irq_map))
- printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
- else
- i = cs8900_irq_map[i];
-
- lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
- } else {
- int irq_map_buff[IRQ_MAP_LEN/2];
-
- if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
- IRQ_MAP_LEN/2,
- irq_map_buff) >= 0) {
- if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
- lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
- }
-#endif
- }
- if (!dev->irq)
- dev->irq = i;
- }
-
- printk(" IRQ %d", dev->irq);
-
-#if ALLOW_DMA
- if (lp->use_dma) {
- get_dma_channel(dev);
- printk(", DMA %d", dev->dma);
- }
- else
-#endif
- {
- printk(", programmed I/O");
- }
-
- /* print the ethernet address. */
- printk(", MAC %pM", dev->dev_addr);
-
- dev->netdev_ops = &net_ops;
- dev->watchdog_timeo = HZ;
-
- printk("\n");
- if (net_debug)
- printk("cs89x0_probe1() successful\n");
-
- retval = register_netdev(dev);
- if (retval)
- goto out3;
- return 0;
-out3:
- writeword(dev->base_addr, ADD_PORT, PP_ChipID);
-out2:
- release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
-out1:
- return retval;
-}
-
-
-/*********************************
- * This page contains DMA routines
-**********************************/
-
-#if ALLOW_DMA
-
-#define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
-
-static void
-get_dma_channel(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
-
- if (lp->dma) {
- dev->dma = lp->dma;
- lp->isa_config |= ISA_RxDMA;
- } else {
- if ((lp->isa_config & ANY_ISA_DMA) == 0)
- return;
- dev->dma = lp->isa_config & DMA_NO_MASK;
- if (lp->chip_type == CS8900)
- dev->dma += 5;
- if (dev->dma < 5 || dev->dma > 7) {
- lp->isa_config &= ~ANY_ISA_DMA;
- return;
- }
- }
-}
-
-static void
-write_dma(struct net_device *dev, int chip_type, int dma)
-{
- struct net_local *lp = netdev_priv(dev);
- if ((lp->isa_config & ANY_ISA_DMA) == 0)
- return;
- if (chip_type == CS8900) {
- writereg(dev, PP_CS8900_ISADMA, dma-5);
- } else {
- writereg(dev, PP_CS8920_ISADMA, dma);
- }
-}
-
-static void
-set_dma_cfg(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
-
- if (lp->use_dma) {
- if ((lp->isa_config & ANY_ISA_DMA) == 0) {
- if (net_debug > 3)
- printk("set_dma_cfg(): no DMA\n");
- return;
- }
- if (lp->isa_config & ISA_RxDMA) {
- lp->curr_rx_cfg |= RX_DMA_ONLY;
- if (net_debug > 3)
- printk("set_dma_cfg(): RX_DMA_ONLY\n");
- } else {
- lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
- if (net_debug > 3)
- printk("set_dma_cfg(): AUTO_RX_DMA\n");
- }
- }
-}
-
-static int
-dma_bufcfg(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- if (lp->use_dma)
- return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
- else
- return 0;
-}
-
-static int
-dma_busctl(struct net_device *dev)
-{
- int retval = 0;
- struct net_local *lp = netdev_priv(dev);
- if (lp->use_dma) {
- if (lp->isa_config & ANY_ISA_DMA)
- retval |= RESET_RX_DMA; /* Reset the DMA pointer */
- if (lp->isa_config & DMA_BURST)
- retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
- if (lp->dmasize == 64)
- retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
- retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
- }
- return retval;
-}
-
-static void
-dma_rx(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- struct sk_buff *skb;
- int status, length;
- unsigned char *bp = lp->rx_dma_ptr;
-
- status = bp[0] + (bp[1]<<8);
- length = bp[2] + (bp[3]<<8);
- bp += 4;
- if (net_debug > 5) {
- printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
- dev->name, (unsigned long)bp, status, length);
- }
- if ((status & RX_OK) == 0) {
- count_rx_errors(status, dev);
- goto skip_this_frame;
- }
-
- /* Malloc up new buffer. */
- skb = dev_alloc_skb(length + 2);
- if (skb == NULL) {
- if (net_debug) /* I don't think we want to do this to a stressed system */
- printk("%s: Memory squeeze, dropping packet.\n", dev->name);
- dev->stats.rx_dropped++;
-
- /* AKPM: advance bp to the next frame */
-skip_this_frame:
- bp += (length + 3) & ~3;
- if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
- lp->rx_dma_ptr = bp;
- return;
- }
- skb_reserve(skb, 2); /* longword align L3 header */
-
- if (bp + length > lp->end_dma_buff) {
- int semi_cnt = lp->end_dma_buff - bp;
- memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
- memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
- length - semi_cnt);
- } else {
- memcpy(skb_put(skb,length), bp, length);
- }
- bp += (length + 3) & ~3;
- if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
- lp->rx_dma_ptr = bp;
-
- if (net_debug > 3) {
- printk( "%s: received %d byte DMA packet of type %x\n",
- dev->name, length,
- (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
- }
- skb->protocol=eth_type_trans(skb,dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += length;
-}
-
-#endif /* ALLOW_DMA */
-
-static void __init reset_chip(struct net_device *dev)
-{
-#if !defined(CONFIG_MACH_MX31ADS)
-#if !defined(CS89x0_NONISA_IRQ)
- struct net_local *lp = netdev_priv(dev);
- int ioaddr = dev->base_addr;
-#endif /* CS89x0_NONISA_IRQ */
- int reset_start_time;
-
- writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
-
- /* wait 30 ms */
- msleep(30);
-
-#if !defined(CS89x0_NONISA_IRQ)
- if (lp->chip_type != CS8900) {
- /* Hardware problem requires PNP registers to be reconfigured after a reset */
- writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
- outb(dev->irq, ioaddr + DATA_PORT);
- outb(0, ioaddr + DATA_PORT + 1);
-
- writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
- outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
- outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
- }
-#endif /* CS89x0_NONISA_IRQ */
-
- /* Wait until the chip is reset */
- reset_start_time = jiffies;
- while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
- ;
-#endif /* !CONFIG_MACH_MX31ADS */
-}
-
-
-static void
-control_dc_dc(struct net_device *dev, int on_not_off)
-{
- struct net_local *lp = netdev_priv(dev);
- unsigned int selfcontrol;
- int timenow = jiffies;
- /* control the DC to DC convertor in the SelfControl register.
- Note: This is hooked up to a general purpose pin, might not
- always be a DC to DC convertor. */
-
- selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
- if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
- selfcontrol |= HCB1;
- else
- selfcontrol &= ~HCB1;
- writereg(dev, PP_SelfCTL, selfcontrol);
-
- /* Wait for the DC/DC converter to power up - 500ms */
- while (jiffies - timenow < HZ)
- ;
-}
-
-#define DETECTED_NONE 0
-#define DETECTED_RJ45H 1
-#define DETECTED_RJ45F 2
-#define DETECTED_AUI 3
-#define DETECTED_BNC 4
-
-static int
-detect_tp(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- int timenow = jiffies;
- int fdx;
-
- if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
-
- /* If connected to another full duplex capable 10-Base-T card the link pulses
- seem to be lost when the auto detect bit in the LineCTL is set.
- To overcome this the auto detect bit will be cleared whilst testing the
- 10-Base-T interface. This would not be necessary for the sparrow chip but
- is simpler to do it anyway. */
- writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
- control_dc_dc(dev, 0);
-
- /* Delay for the hardware to work out if the TP cable is present - 150ms */
- for (timenow = jiffies; jiffies - timenow < 15; )
- ;
- if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
- return DETECTED_NONE;
-
- if (lp->chip_type == CS8900) {
- switch (lp->force & 0xf0) {
-#if 0
- case FORCE_AUTO:
- printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
- return DETECTED_NONE;
-#endif
- /* CS8900 doesn't support AUTO, change to HALF*/
- case FORCE_AUTO:
- lp->force &= ~FORCE_AUTO;
- lp->force |= FORCE_HALF;
- break;
- case FORCE_HALF:
- break;
- case FORCE_FULL:
- writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
- break;
- }
- fdx = readreg(dev, PP_TestCTL) & FDX_8900;
- } else {
- switch (lp->force & 0xf0) {
- case FORCE_AUTO:
- lp->auto_neg_cnf = AUTO_NEG_ENABLE;
- break;
- case FORCE_HALF:
- lp->auto_neg_cnf = 0;
- break;
- case FORCE_FULL:
- lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
- break;
- }
-
- writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
-
- if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
- printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
- while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
- if (jiffies - timenow > 4000) {
- printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
- break;
- }
- }
- }
- fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
- }
- if (fdx)
- return DETECTED_RJ45F;
- else
- return DETECTED_RJ45H;
-}
-
-/* send a test packet - return true if carrier bits are ok */
-static int
-send_test_pkt(struct net_device *dev)
-{
- char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
- 0, 46, /* A 46 in network order */
- 0, 0, /* DSAP=0 & SSAP=0 fields */
- 0xf3, 0 /* Control (Test Req + P bit set) */ };
- long timenow = jiffies;
-
- writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
-
- memcpy(test_packet, dev->dev_addr, ETH_ALEN);
- memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
-
- writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
- writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
-
- /* Test to see if the chip has allocated memory for the packet */
- while (jiffies - timenow < 5)
- if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
- break;
- if (jiffies - timenow >= 5)
- return 0; /* this shouldn't happen */
-
- /* Write the contents of the packet */
- writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
-
- if (net_debug > 1) printk("Sending test packet ");
- /* wait a couple of jiffies for packet to be received */
- for (timenow = jiffies; jiffies - timenow < 3; )
- ;
- if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
- if (net_debug > 1) printk("succeeded\n");
- return 1;
- }
- if (net_debug > 1) printk("failed\n");
- return 0;
-}
-
-
-static int
-detect_aui(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
-
- if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
- control_dc_dc(dev, 0);
-
- writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
-
- if (send_test_pkt(dev))
- return DETECTED_AUI;
- else
- return DETECTED_NONE;
-}
-
-static int
-detect_bnc(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
-
- if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
- control_dc_dc(dev, 1);
-
- writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
-
- if (send_test_pkt(dev))
- return DETECTED_BNC;
- else
- return DETECTED_NONE;
-}
-
-
-static void
-write_irq(struct net_device *dev, int chip_type, int irq)
-{
- int i;
-
- if (chip_type == CS8900) {
- /* Search the mapping table for the corresponding IRQ pin. */
- for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
- if (cs8900_irq_map[i] == irq)
- break;
- /* Not found */
- if (i == ARRAY_SIZE(cs8900_irq_map))
- i = 3;
- writereg(dev, PP_CS8900_ISAINT, i);
- } else {
- writereg(dev, PP_CS8920_ISAINT, irq);
- }
-}
-
-/* Open/initialize the board. This is called (in the current kernel)
- sometime after booting when the 'ifconfig' program is run.
-
- This routine should set everything up anew at each open, even
- registers that "should" only need to be set once at boot, so that
- there is non-reboot way to recover if something goes wrong.
- */
-
-/* AKPM: do we need to do any locking here? */
-
-static int
-net_open(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- int result = 0;
- int i;
- int ret;
-
- if (dev->irq < 2) {
- /* Allow interrupts to be generated by the chip */
-/* Cirrus' release had this: */
-#if 0
- writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
-#endif
-/* And 2.3.47 had this: */
- writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
-
- for (i = 2; i < CS8920_NO_INTS; i++) {
- if ((1 << i) & lp->irq_map) {
- if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
- dev->irq = i;
- write_irq(dev, lp->chip_type, i);
- /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
- break;
- }
- }
- }
-
- if (i >= CS8920_NO_INTS) {
- writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
- printk(KERN_ERR "cs89x0: can't get an interrupt\n");
- ret = -EAGAIN;
- goto bad_out;
- }
- }
- else
- {
-#ifndef CONFIG_CS89x0_NONISA_IRQ
- if (((1 << dev->irq) & lp->irq_map) == 0) {
- printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
- dev->name, dev->irq, lp->irq_map);
- ret = -EAGAIN;
- goto bad_out;
- }
-#endif
-/* FIXME: Cirrus' release had this: */
- writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
-/* And 2.3.47 had this: */
-#if 0
- writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
-#endif
- write_irq(dev, lp->chip_type, dev->irq);
- ret = request_irq(dev->irq, net_interrupt, 0, dev->name, dev);
- if (ret) {
- printk(KERN_ERR "cs89x0: request_irq(%d) failed\n", dev->irq);
- goto bad_out;
- }
- }
-
-#if ALLOW_DMA
- if (lp->use_dma) {
- if (lp->isa_config & ANY_ISA_DMA) {
- unsigned long flags;
- lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
- get_order(lp->dmasize * 1024));
-
- if (!lp->dma_buff) {
- printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
- goto release_irq;
- }
- if (net_debug > 1) {
- printk( "%s: dma %lx %lx\n",
- dev->name,
- (unsigned long)lp->dma_buff,
- (unsigned long)isa_virt_to_bus(lp->dma_buff));
- }
- if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
- !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
- printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
- goto release_irq;
- }
- memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
- if (request_dma(dev->dma, dev->name)) {
- printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
- goto release_irq;
- }
- write_dma(dev, lp->chip_type, dev->dma);
- lp->rx_dma_ptr = lp->dma_buff;
- lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
- spin_lock_irqsave(&lp->lock, flags);
- disable_dma(dev->dma);
- clear_dma_ff(dev->dma);
- set_dma_mode(dev->dma, DMA_RX_MODE); /* auto_init as well */
- set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
- set_dma_count(dev->dma, lp->dmasize*1024);
- enable_dma(dev->dma);
- spin_unlock_irqrestore(&lp->lock, flags);
- }
- }
-#endif /* ALLOW_DMA */
-
- /* set the Ethernet address */
- for (i=0; i < ETH_ALEN/2; i++)
- writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
-
- /* while we're testing the interface, leave interrupts disabled */
- writereg(dev, PP_BusCTL, MEMORY_ON);
-
- /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
- if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
- lp->linectl = LOW_RX_SQUELCH;
- else
- lp->linectl = 0;
-
- /* check to make sure that they have the "right" hardware available */
- switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
- case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
- case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
- case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
- default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
- }
- if (!result) {
- printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
-release_dma:
-#if ALLOW_DMA
- free_dma(dev->dma);
-release_irq:
- release_dma_buff(lp);
-#endif
- writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
- free_irq(dev->irq, dev);
- ret = -EAGAIN;
- goto bad_out;
- }
-
- /* set the hardware to the configured choice */
- switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
- case A_CNF_MEDIA_10B_T:
- result = detect_tp(dev);
- if (result==DETECTED_NONE) {
- printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
- if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
- result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
- }
- break;
- case A_CNF_MEDIA_AUI:
- result = detect_aui(dev);
- if (result==DETECTED_NONE) {
- printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
- if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
- result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
- }
- break;
- case A_CNF_MEDIA_10B_2:
- result = detect_bnc(dev);
- if (result==DETECTED_NONE) {
- printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
- if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
- result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
- }
- break;
- case A_CNF_MEDIA_AUTO:
- writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
- if (lp->adapter_cnf & A_CNF_10B_T)
- if ((result = detect_tp(dev)) != DETECTED_NONE)
- break;
- if (lp->adapter_cnf & A_CNF_AUI)
- if ((result = detect_aui(dev)) != DETECTED_NONE)
- break;
- if (lp->adapter_cnf & A_CNF_10B_2)
- if ((result = detect_bnc(dev)) != DETECTED_NONE)
- break;
- printk(KERN_ERR "%s: no media detected\n", dev->name);
- goto release_dma;
- }
- switch(result) {
- case DETECTED_NONE:
- printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
- goto release_dma;
- case DETECTED_RJ45H:
- printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
- break;
- case DETECTED_RJ45F:
- printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
- break;
- case DETECTED_AUI:
- printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
- break;
- case DETECTED_BNC:
- printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
- break;
- }
-
- /* Turn on both receive and transmit operations */
- writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
-
- /* Receive only error free packets addressed to this card */
- lp->rx_mode = 0;
- writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
-
- lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
-
- if (lp->isa_config & STREAM_TRANSFER)
- lp->curr_rx_cfg |= RX_STREAM_ENBL;
-#if ALLOW_DMA
- set_dma_cfg(dev);
-#endif
- writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
-
- writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
- TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
-
- writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
-#if ALLOW_DMA
- dma_bufcfg(dev) |
-#endif
- TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
-
- /* now that we've got our act together, enable everything */
- writereg(dev, PP_BusCTL, ENABLE_IRQ
- | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
-#if ALLOW_DMA
- | dma_busctl(dev)
-#endif
- );
- netif_start_queue(dev);
- if (net_debug > 1)
- printk("cs89x0: net_open() succeeded\n");
- return 0;
-bad_out:
- return ret;
-}
-
-static void net_timeout(struct net_device *dev)
-{
- /* If we get here, some higher level has decided we are broken.
- There should really be a "kick me" function call instead. */
- if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
- tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
- /* Try to restart the adaptor. */
- netif_wake_queue(dev);
-}
-
-static netdev_tx_t net_send_packet(struct sk_buff *skb,struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- unsigned long flags;
-
- if (net_debug > 3) {
- printk("%s: sent %d byte packet of type %x\n",
- dev->name, skb->len,
- (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
- }
-
- /* keep the upload from being interrupted, since we
- ask the chip to start transmitting before the
- whole packet has been completely uploaded. */
-
- spin_lock_irqsave(&lp->lock, flags);
- netif_stop_queue(dev);
-
- /* initiate a transmit sequence */
- writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
- writeword(dev->base_addr, TX_LEN_PORT, skb->len);
-
- /* Test to see if the chip has allocated memory for the packet */
- if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
- /*
- * Gasp! It hasn't. But that shouldn't happen since
- * we're waiting for TxOk, so return 1 and requeue this packet.
- */
-
- spin_unlock_irqrestore(&lp->lock, flags);
- if (net_debug) printk("cs89x0: Tx buffer not free!\n");
- return NETDEV_TX_BUSY;
- }
- /* Write the contents of the packet */
- writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
- spin_unlock_irqrestore(&lp->lock, flags);
- dev->stats.tx_bytes += skb->len;
- dev_kfree_skb (skb);
-
- /*
- * We DO NOT call netif_wake_queue() here.
- * We also DO NOT call netif_start_queue().
- *
- * Either of these would cause another bottom half run through
- * net_send_packet() before this packet has fully gone out. That causes
- * us to hit the "Gasp!" above and the send is rescheduled. it runs like
- * a dog. We just return and wait for the Tx completion interrupt handler
- * to restart the netdevice layer
- */
-
- return NETDEV_TX_OK;
-}
-
-/* The typical workload of the driver:
- Handle the network interface interrupts. */
-
-static irqreturn_t net_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct net_local *lp;
- int ioaddr, status;
- int handled = 0;
-
- ioaddr = dev->base_addr;
- lp = netdev_priv(dev);
-
- /* we MUST read all the events out of the ISQ, otherwise we'll never
- get interrupted again. As a consequence, we can't have any limit
- on the number of times we loop in the interrupt handler. The
- hardware guarantees that eventually we'll run out of events. Of
- course, if you're on a slow machine, and packets are arriving
- faster than you can read them off, you're screwed. Hasta la
- vista, baby! */
- while ((status = readword(dev->base_addr, ISQ_PORT))) {
- if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
- handled = 1;
- switch(status & ISQ_EVENT_MASK) {
- case ISQ_RECEIVER_EVENT:
- /* Got a packet(s). */
- net_rx(dev);
- break;
- case ISQ_TRANSMITTER_EVENT:
- dev->stats.tx_packets++;
- netif_wake_queue(dev); /* Inform upper layers. */
- if ((status & ( TX_OK |
- TX_LOST_CRS |
- TX_SQE_ERROR |
- TX_LATE_COL |
- TX_16_COL)) != TX_OK) {
- if ((status & TX_OK) == 0)
- dev->stats.tx_errors++;
- if (status & TX_LOST_CRS)
- dev->stats.tx_carrier_errors++;
- if (status & TX_SQE_ERROR)
- dev->stats.tx_heartbeat_errors++;
- if (status & TX_LATE_COL)
- dev->stats.tx_window_errors++;
- if (status & TX_16_COL)
- dev->stats.tx_aborted_errors++;
- }
- break;
- case ISQ_BUFFER_EVENT:
- if (status & READY_FOR_TX) {
- /* we tried to transmit a packet earlier,
- but inexplicably ran out of buffers.
- That shouldn't happen since we only ever
- load one packet. Shrug. Do the right
- thing anyway. */
- netif_wake_queue(dev); /* Inform upper layers. */
- }
- if (status & TX_UNDERRUN) {
- if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
- lp->send_underrun++;
- if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
- else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
- /* transmit cycle is done, although
- frame wasn't transmitted - this
- avoids having to wait for the upper
- layers to timeout on us, in the
- event of a tx underrun */
- netif_wake_queue(dev); /* Inform upper layers. */
- }
-#if ALLOW_DMA
- if (lp->use_dma && (status & RX_DMA)) {
- int count = readreg(dev, PP_DmaFrameCnt);
- while(count) {
- if (net_debug > 5)
- printk("%s: receiving %d DMA frames\n", dev->name, count);
- if (net_debug > 2 && count >1)
- printk("%s: receiving %d DMA frames\n", dev->name, count);
- dma_rx(dev);
- if (--count == 0)
- count = readreg(dev, PP_DmaFrameCnt);
- if (net_debug > 2 && count > 0)
- printk("%s: continuing with %d DMA frames\n", dev->name, count);
- }
- }
-#endif
- break;
- case ISQ_RX_MISS_EVENT:
- dev->stats.rx_missed_errors += (status >> 6);
- break;
- case ISQ_TX_COL_EVENT:
- dev->stats.collisions += (status >> 6);
- break;
- }
- }
- return IRQ_RETVAL(handled);
-}
-
-static void
-count_rx_errors(int status, struct net_device *dev)
-{
- dev->stats.rx_errors++;
- if (status & RX_RUNT)
- dev->stats.rx_length_errors++;
- if (status & RX_EXTRA_DATA)
- dev->stats.rx_length_errors++;
- if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA|RX_RUNT)))
- /* per str 172 */
- dev->stats.rx_crc_errors++;
- if (status & RX_DRIBBLE)
- dev->stats.rx_frame_errors++;
-}
-
-/* We have a good packet(s), get it/them out of the buffers. */
-static void
-net_rx(struct net_device *dev)
-{
- struct sk_buff *skb;
- int status, length;
-
- int ioaddr = dev->base_addr;
- status = readword(ioaddr, RX_FRAME_PORT);
- length = readword(ioaddr, RX_FRAME_PORT);
-
- if ((status & RX_OK) == 0) {
- count_rx_errors(status, dev);
- return;
- }
-
- /* Malloc up new buffer. */
- skb = dev_alloc_skb(length + 2);
- if (skb == NULL) {
-#if 0 /* Again, this seems a cruel thing to do */
- printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
-#endif
- dev->stats.rx_dropped++;
- return;
- }
- skb_reserve(skb, 2); /* longword align L3 header */
-
- readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
- if (length & 1)
- skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
-
- if (net_debug > 3) {
- printk( "%s: received %d byte packet of type %x\n",
- dev->name, length,
- (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
- }
-
- skb->protocol=eth_type_trans(skb,dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += length;
-}
-
-#if ALLOW_DMA
-static void release_dma_buff(struct net_local *lp)
-{
- if (lp->dma_buff) {
- free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
- lp->dma_buff = NULL;
- }
-}
-#endif
-
-/* The inverse routine to net_open(). */
-static int
-net_close(struct net_device *dev)
-{
-#if ALLOW_DMA
- struct net_local *lp = netdev_priv(dev);
-#endif
-
- netif_stop_queue(dev);
-
- writereg(dev, PP_RxCFG, 0);
- writereg(dev, PP_TxCFG, 0);
- writereg(dev, PP_BufCFG, 0);
- writereg(dev, PP_BusCTL, 0);
-
- free_irq(dev->irq, dev);
-
-#if ALLOW_DMA
- if (lp->use_dma && lp->dma) {
- free_dma(dev->dma);
- release_dma_buff(lp);
- }
-#endif
-
- /* Update the statistics here. */
- return 0;
-}
-
-/* Get the current statistics. This may be called with the card open or
- closed. */
-static struct net_device_stats *
-net_get_stats(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&lp->lock, flags);
- /* Update the statistics from the device registers. */
- dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
- dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
- spin_unlock_irqrestore(&lp->lock, flags);
-
- return &dev->stats;
-}
-
-static void set_multicast_list(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&lp->lock, flags);
- if(dev->flags&IFF_PROMISC)
- {
- lp->rx_mode = RX_ALL_ACCEPT;
- }
- else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev))
- {
- /* The multicast-accept list is initialized to accept-all, and we
- rely on higher-level filtering for now. */
- lp->rx_mode = RX_MULTCAST_ACCEPT;
- }
- else
- lp->rx_mode = 0;
-
- writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
-
- /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
- writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
- (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
- spin_unlock_irqrestore(&lp->lock, flags);
-}
-
-
-static int set_mac_address(struct net_device *dev, void *p)
-{
- int i;
- struct sockaddr *addr = p;
-
- if (netif_running(dev))
- return -EBUSY;
-
- memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
-
- if (net_debug)
- printk("%s: Setting MAC address to %pM.\n",
- dev->name, dev->dev_addr);
-
- /* set the Ethernet address */
- for (i=0; i < ETH_ALEN/2; i++)
- writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
-
- return 0;
-}
-
-#ifdef MODULE
-
-static struct net_device *dev_cs89x0;
-
-/*
- * Support the 'debug' module parm even if we're compiled for non-debug to
- * avoid breaking someone's startup scripts
- */
-
-static int io;
-static int irq;
-static int debug;
-static char media[8];
-static int duplex=-1;
-
-static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
-static int dma;
-static int dmasize=16; /* or 64 */
-
-module_param(io, int, 0);
-module_param(irq, int, 0);
-module_param(debug, int, 0);
-module_param_string(media, media, sizeof(media), 0);
-module_param(duplex, int, 0);
-module_param(dma , int, 0);
-module_param(dmasize , int, 0);
-module_param(use_dma , int, 0);
-MODULE_PARM_DESC(io, "cs89x0 I/O base address");
-MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
-#if DEBUGGING
-MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
-#else
-MODULE_PARM_DESC(debug, "(ignored)");
-#endif
-MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
-/* No other value than -1 for duplex seems to be currently interpreted */
-MODULE_PARM_DESC(duplex, "(ignored)");
-#if ALLOW_DMA
-MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
-MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
-MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
-#else
-MODULE_PARM_DESC(dma , "(ignored)");
-MODULE_PARM_DESC(dmasize , "(ignored)");
-MODULE_PARM_DESC(use_dma , "(ignored)");
-#endif
-
-MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton");
-MODULE_LICENSE("GPL");
-
-
-/*
-* media=t - specify media type
- or media=2
- or media=aui
- or medai=auto
-* duplex=0 - specify forced half/full/autonegotiate duplex
-* debug=# - debug level
-
-
-* Default Chip Configuration:
- * DMA Burst = enabled
- * IOCHRDY Enabled = enabled
- * UseSA = enabled
- * CS8900 defaults to half-duplex if not specified on command-line
- * CS8920 defaults to autoneg if not specified on command-line
- * Use reset defaults for other config parameters
-
-* Assumptions:
- * media type specified is supported (circuitry is present)
- * if memory address is > 1MB, then required mem decode hw is present
- * if 10B-2, then agent other than driver will enable DC/DC converter
- (hw or software util)
-
-
-*/
-
-int __init init_module(void)
-{
- struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
- struct net_local *lp;
- int ret = 0;
-
-#if DEBUGGING
- net_debug = debug;
-#else
- debug = 0;
-#endif
- if (!dev)
- return -ENOMEM;
-
- dev->irq = irq;
- dev->base_addr = io;
- lp = netdev_priv(dev);
-
-#if ALLOW_DMA
- if (use_dma) {
- lp->use_dma = use_dma;
- lp->dma = dma;
- lp->dmasize = dmasize;
- }
-#endif
-
- spin_lock_init(&lp->lock);
-
- /* boy, they'd better get these right */
- if (!strcmp(media, "rj45"))
- lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
- else if (!strcmp(media, "aui"))
- lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
- else if (!strcmp(media, "bnc"))
- lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
- else
- lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
-
- if (duplex==-1)
- lp->auto_neg_cnf = AUTO_NEG_ENABLE;
-
- if (io == 0) {
- printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
- printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
- ret = -EPERM;
- goto out;
- } else if (io <= 0x1ff) {
- ret = -ENXIO;
- goto out;
- }
-
-#if ALLOW_DMA
- if (use_dma && dmasize != 16 && dmasize != 64) {
- printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
- ret = -EPERM;
- goto out;
- }
-#endif
- ret = cs89x0_probe1(dev, io, 1);
- if (ret)
- goto out;
-
- dev_cs89x0 = dev;
- return 0;
-out:
- free_netdev(dev);
- return ret;
-}
-
-void __exit
-cleanup_module(void)
-{
- unregister_netdev(dev_cs89x0);
- writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
- release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
- free_netdev(dev_cs89x0);
-}
-#endif /* MODULE */
-
-/*
- * Local variables:
- * version-control: t
- * kept-new-versions: 5
- * c-indent-level: 8
- * tab-width: 8
- * End:
- *
- */
+++ /dev/null
-/* Copyright, 1988-1992, Russell Nelson, Crynwr Software
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, version 1.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
-#define PP_ChipID 0x0000 /* offset 0h -> Corp -ID */
- /* offset 2h -> Model/Product Number */
- /* offset 3h -> Chip Revision Number */
-
-#define PP_ISAIOB 0x0020 /* IO base address */
-#define PP_CS8900_ISAINT 0x0022 /* ISA interrupt select */
-#define PP_CS8920_ISAINT 0x0370 /* ISA interrupt select */
-#define PP_CS8900_ISADMA 0x0024 /* ISA Rec DMA channel */
-#define PP_CS8920_ISADMA 0x0374 /* ISA Rec DMA channel */
-#define PP_ISASOF 0x0026 /* ISA DMA offset */
-#define PP_DmaFrameCnt 0x0028 /* ISA DMA Frame count */
-#define PP_DmaByteCnt 0x002A /* ISA DMA Byte count */
-#define PP_CS8900_ISAMemB 0x002C /* Memory base */
-#define PP_CS8920_ISAMemB 0x0348 /* */
-
-#define PP_ISABootBase 0x0030 /* Boot Prom base */
-#define PP_ISABootMask 0x0034 /* Boot Prom Mask */
-
-/* EEPROM data and command registers */
-#define PP_EECMD 0x0040 /* NVR Interface Command register */
-#define PP_EEData 0x0042 /* NVR Interface Data Register */
-#define PP_DebugReg 0x0044 /* Debug Register */
-
-#define PP_RxCFG 0x0102 /* Rx Bus config */
-#define PP_RxCTL 0x0104 /* Receive Control Register */
-#define PP_TxCFG 0x0106 /* Transmit Config Register */
-#define PP_TxCMD 0x0108 /* Transmit Command Register */
-#define PP_BufCFG 0x010A /* Bus configuration Register */
-#define PP_LineCTL 0x0112 /* Line Config Register */
-#define PP_SelfCTL 0x0114 /* Self Command Register */
-#define PP_BusCTL 0x0116 /* ISA bus control Register */
-#define PP_TestCTL 0x0118 /* Test Register */
-#define PP_AutoNegCTL 0x011C /* Auto Negotiation Ctrl */
-
-#define PP_ISQ 0x0120 /* Interrupt Status */
-#define PP_RxEvent 0x0124 /* Rx Event Register */
-#define PP_TxEvent 0x0128 /* Tx Event Register */
-#define PP_BufEvent 0x012C /* Bus Event Register */
-#define PP_RxMiss 0x0130 /* Receive Miss Count */
-#define PP_TxCol 0x0132 /* Transmit Collision Count */
-#define PP_LineST 0x0134 /* Line State Register */
-#define PP_SelfST 0x0136 /* Self State register */
-#define PP_BusST 0x0138 /* Bus Status */
-#define PP_TDR 0x013C /* Time Domain Reflectometry */
-#define PP_AutoNegST 0x013E /* Auto Neg Status */
-#define PP_TxCommand 0x0144 /* Tx Command */
-#define PP_TxLength 0x0146 /* Tx Length */
-#define PP_LAF 0x0150 /* Hash Table */
-#define PP_IA 0x0158 /* Physical Address Register */
-
-#define PP_RxStatus 0x0400 /* Receive start of frame */
-#define PP_RxLength 0x0402 /* Receive Length of frame */
-#define PP_RxFrame 0x0404 /* Receive frame pointer */
-#define PP_TxFrame 0x0A00 /* Transmit frame pointer */
-
-/* Primary I/O Base Address. If no I/O base is supplied by the user, then this */
-/* can be used as the default I/O base to access the PacketPage Area. */
-#define DEFAULTIOBASE 0x0300
-#define FIRST_IO 0x020C /* First I/O port to check */
-#define LAST_IO 0x037C /* Last I/O port to check (+10h) */
-#define ADD_MASK 0x3000 /* Mask it use of the ADD_PORT register */
-#define ADD_SIG 0x3000 /* Expected ID signature */
-
-/* On Macs, we only need use the ISA I/O stuff until we do MEMORY_ON */
-#ifdef CONFIG_MAC
-#define LCSLOTBASE 0xfee00000
-#define MMIOBASE 0x40000
-#endif
-
-#define CHIP_EISA_ID_SIG 0x630E /* Product ID Code for Crystal Chip (CS8900 spec 4.3) */
-#define CHIP_EISA_ID_SIG_STR "0x630E"
-
-#ifdef IBMEIPKT
-#define EISA_ID_SIG 0x4D24 /* IBM */
-#define PART_NO_SIG 0x1010 /* IBM */
-#define MONGOOSE_BIT 0x0000 /* IBM */
-#else
-#define EISA_ID_SIG 0x630E /* PnP Vendor ID (same as chip id for Crystal board) */
-#define PART_NO_SIG 0x4000 /* ID code CS8920 board (PnP Vendor Product code) */
-#define MONGOOSE_BIT 0x2000 /* PART_NO_SIG + MONGOOSE_BUT => ID of mongoose */
-#endif
-
-#define PRODUCT_ID_ADD 0x0002 /* Address of product ID */
-
-/* Mask to find out the types of registers */
-#define REG_TYPE_MASK 0x001F
-
-/* Eeprom Commands */
-#define ERSE_WR_ENBL 0x00F0
-#define ERSE_WR_DISABLE 0x0000
-
-/* Defines Control/Config register quintuplet numbers */
-#define RX_BUF_CFG 0x0003
-#define RX_CONTROL 0x0005
-#define TX_CFG 0x0007
-#define TX_COMMAND 0x0009
-#define BUF_CFG 0x000B
-#define LINE_CONTROL 0x0013
-#define SELF_CONTROL 0x0015
-#define BUS_CONTROL 0x0017
-#define TEST_CONTROL 0x0019
-
-/* Defines Status/Count registers quintuplet numbers */
-#define RX_EVENT 0x0004
-#define TX_EVENT 0x0008
-#define BUF_EVENT 0x000C
-#define RX_MISS_COUNT 0x0010
-#define TX_COL_COUNT 0x0012
-#define LINE_STATUS 0x0014
-#define SELF_STATUS 0x0016
-#define BUS_STATUS 0x0018
-#define TDR 0x001C
-
-/* PP_RxCFG - Receive Configuration and Interrupt Mask bit definition - Read/write */
-#define SKIP_1 0x0040
-#define RX_STREAM_ENBL 0x0080
-#define RX_OK_ENBL 0x0100
-#define RX_DMA_ONLY 0x0200
-#define AUTO_RX_DMA 0x0400
-#define BUFFER_CRC 0x0800
-#define RX_CRC_ERROR_ENBL 0x1000
-#define RX_RUNT_ENBL 0x2000
-#define RX_EXTRA_DATA_ENBL 0x4000
-
-/* PP_RxCTL - Receive Control bit definition - Read/write */
-#define RX_IA_HASH_ACCEPT 0x0040
-#define RX_PROM_ACCEPT 0x0080
-#define RX_OK_ACCEPT 0x0100
-#define RX_MULTCAST_ACCEPT 0x0200
-#define RX_IA_ACCEPT 0x0400
-#define RX_BROADCAST_ACCEPT 0x0800
-#define RX_BAD_CRC_ACCEPT 0x1000
-#define RX_RUNT_ACCEPT 0x2000
-#define RX_EXTRA_DATA_ACCEPT 0x4000
-#define RX_ALL_ACCEPT (RX_PROM_ACCEPT|RX_BAD_CRC_ACCEPT|RX_RUNT_ACCEPT|RX_EXTRA_DATA_ACCEPT)
-/* Default receive mode - individually addressed, broadcast, and error free */
-#define DEF_RX_ACCEPT (RX_IA_ACCEPT | RX_BROADCAST_ACCEPT | RX_OK_ACCEPT)
-
-/* PP_TxCFG - Transmit Configuration Interrupt Mask bit definition - Read/write */
-#define TX_LOST_CRS_ENBL 0x0040
-#define TX_SQE_ERROR_ENBL 0x0080
-#define TX_OK_ENBL 0x0100
-#define TX_LATE_COL_ENBL 0x0200
-#define TX_JBR_ENBL 0x0400
-#define TX_ANY_COL_ENBL 0x0800
-#define TX_16_COL_ENBL 0x8000
-
-/* PP_TxCMD - Transmit Command bit definition - Read-only */
-#define TX_START_4_BYTES 0x0000
-#define TX_START_64_BYTES 0x0040
-#define TX_START_128_BYTES 0x0080
-#define TX_START_ALL_BYTES 0x00C0
-#define TX_FORCE 0x0100
-#define TX_ONE_COL 0x0200
-#define TX_TWO_PART_DEFF_DISABLE 0x0400
-#define TX_NO_CRC 0x1000
-#define TX_RUNT 0x2000
-
-/* PP_BufCFG - Buffer Configuration Interrupt Mask bit definition - Read/write */
-#define GENERATE_SW_INTERRUPT 0x0040
-#define RX_DMA_ENBL 0x0080
-#define READY_FOR_TX_ENBL 0x0100
-#define TX_UNDERRUN_ENBL 0x0200
-#define RX_MISS_ENBL 0x0400
-#define RX_128_BYTE_ENBL 0x0800
-#define TX_COL_COUNT_OVRFLOW_ENBL 0x1000
-#define RX_MISS_COUNT_OVRFLOW_ENBL 0x2000
-#define RX_DEST_MATCH_ENBL 0x8000
-
-/* PP_LineCTL - Line Control bit definition - Read/write */
-#define SERIAL_RX_ON 0x0040
-#define SERIAL_TX_ON 0x0080
-#define AUI_ONLY 0x0100
-#define AUTO_AUI_10BASET 0x0200
-#define MODIFIED_BACKOFF 0x0800
-#define NO_AUTO_POLARITY 0x1000
-#define TWO_PART_DEFDIS 0x2000
-#define LOW_RX_SQUELCH 0x4000
-
-/* PP_SelfCTL - Software Self Control bit definition - Read/write */
-#define POWER_ON_RESET 0x0040
-#define SW_STOP 0x0100
-#define SLEEP_ON 0x0200
-#define AUTO_WAKEUP 0x0400
-#define HCB0_ENBL 0x1000
-#define HCB1_ENBL 0x2000
-#define HCB0 0x4000
-#define HCB1 0x8000
-
-/* PP_BusCTL - ISA Bus Control bit definition - Read/write */
-#define RESET_RX_DMA 0x0040
-#define MEMORY_ON 0x0400
-#define DMA_BURST_MODE 0x0800
-#define IO_CHANNEL_READY_ON 0x1000
-#define RX_DMA_SIZE_64K 0x2000
-#define ENABLE_IRQ 0x8000
-
-/* PP_TestCTL - Test Control bit definition - Read/write */
-#define LINK_OFF 0x0080
-#define ENDEC_LOOPBACK 0x0200
-#define AUI_LOOPBACK 0x0400
-#define BACKOFF_OFF 0x0800
-#define FDX_8900 0x4000
-#define FAST_TEST 0x8000
-
-/* PP_RxEvent - Receive Event Bit definition - Read-only */
-#define RX_IA_HASHED 0x0040
-#define RX_DRIBBLE 0x0080
-#define RX_OK 0x0100
-#define RX_HASHED 0x0200
-#define RX_IA 0x0400
-#define RX_BROADCAST 0x0800
-#define RX_CRC_ERROR 0x1000
-#define RX_RUNT 0x2000
-#define RX_EXTRA_DATA 0x4000
-
-#define HASH_INDEX_MASK 0x0FC00
-
-/* PP_TxEvent - Transmit Event Bit definition - Read-only */
-#define TX_LOST_CRS 0x0040
-#define TX_SQE_ERROR 0x0080
-#define TX_OK 0x0100
-#define TX_LATE_COL 0x0200
-#define TX_JBR 0x0400
-#define TX_16_COL 0x8000
-#define TX_SEND_OK_BITS (TX_OK|TX_LOST_CRS)
-#define TX_COL_COUNT_MASK 0x7800
-
-/* PP_BufEvent - Buffer Event Bit definition - Read-only */
-#define SW_INTERRUPT 0x0040
-#define RX_DMA 0x0080
-#define READY_FOR_TX 0x0100
-#define TX_UNDERRUN 0x0200
-#define RX_MISS 0x0400
-#define RX_128_BYTE 0x0800
-#define TX_COL_OVRFLW 0x1000
-#define RX_MISS_OVRFLW 0x2000
-#define RX_DEST_MATCH 0x8000
-
-/* PP_LineST - Ethernet Line Status bit definition - Read-only */
-#define LINK_OK 0x0080
-#define AUI_ON 0x0100
-#define TENBASET_ON 0x0200
-#define POLARITY_OK 0x1000
-#define CRS_OK 0x4000
-
-/* PP_SelfST - Chip Software Status bit definition */
-#define ACTIVE_33V 0x0040
-#define INIT_DONE 0x0080
-#define SI_BUSY 0x0100
-#define EEPROM_PRESENT 0x0200
-#define EEPROM_OK 0x0400
-#define EL_PRESENT 0x0800
-#define EE_SIZE_64 0x1000
-
-/* PP_BusST - ISA Bus Status bit definition */
-#define TX_BID_ERROR 0x0080
-#define READY_FOR_TX_NOW 0x0100
-
-/* PP_AutoNegCTL - Auto Negotiation Control bit definition */
-#define RE_NEG_NOW 0x0040
-#define ALLOW_FDX 0x0080
-#define AUTO_NEG_ENABLE 0x0100
-#define NLP_ENABLE 0x0200
-#define FORCE_FDX 0x8000
-#define AUTO_NEG_BITS (FORCE_FDX|NLP_ENABLE|AUTO_NEG_ENABLE)
-#define AUTO_NEG_MASK (FORCE_FDX|NLP_ENABLE|AUTO_NEG_ENABLE|ALLOW_FDX|RE_NEG_NOW)
-
-/* PP_AutoNegST - Auto Negotiation Status bit definition */
-#define AUTO_NEG_BUSY 0x0080
-#define FLP_LINK 0x0100
-#define FLP_LINK_GOOD 0x0800
-#define LINK_FAULT 0x1000
-#define HDX_ACTIVE 0x4000
-#define FDX_ACTIVE 0x8000
-
-/* The following block defines the ISQ event types */
-#define ISQ_RECEIVER_EVENT 0x04
-#define ISQ_TRANSMITTER_EVENT 0x08
-#define ISQ_BUFFER_EVENT 0x0c
-#define ISQ_RX_MISS_EVENT 0x10
-#define ISQ_TX_COL_EVENT 0x12
-
-#define ISQ_EVENT_MASK 0x003F /* ISQ mask to find out type of event */
-#define ISQ_HIST 16 /* small history buffer */
-#define AUTOINCREMENT 0x8000 /* Bit mask to set bit-15 for autoincrement */
-
-#define TXRXBUFSIZE 0x0600
-#define RXDMABUFSIZE 0x8000
-#define RXDMASIZE 0x4000
-#define TXRX_LENGTH_MASK 0x07FF
-
-/* rx options bits */
-#define RCV_WITH_RXON 1 /* Set SerRx ON */
-#define RCV_COUNTS 2 /* Use Framecnt1 */
-#define RCV_PONG 4 /* Pong respondent */
-#define RCV_DONG 8 /* Dong operation */
-#define RCV_POLLING 0x10 /* Poll RxEvent */
-#define RCV_ISQ 0x20 /* Use ISQ, int */
-#define RCV_AUTO_DMA 0x100 /* Set AutoRxDMAE */
-#define RCV_DMA 0x200 /* Set RxDMA only */
-#define RCV_DMA_ALL 0x400 /* Copy all DMA'ed */
-#define RCV_FIXED_DATA 0x800 /* Every frame same */
-#define RCV_IO 0x1000 /* Use ISA IO only */
-#define RCV_MEMORY 0x2000 /* Use ISA Memory */
-
-#define RAM_SIZE 0x1000 /* The card has 4k bytes or RAM */
-#define PKT_START PP_TxFrame /* Start of packet RAM */
-
-#define RX_FRAME_PORT 0x0000
-#define TX_FRAME_PORT RX_FRAME_PORT
-#define TX_CMD_PORT 0x0004
-#define TX_NOW 0x0000 /* Tx packet after 5 bytes copied */
-#define TX_AFTER_381 0x0040 /* Tx packet after 381 bytes copied */
-#define TX_AFTER_ALL 0x00c0 /* Tx packet after all bytes copied */
-#define TX_LEN_PORT 0x0006
-#define ISQ_PORT 0x0008
-#define ADD_PORT 0x000A
-#define DATA_PORT 0x000C
-
-#define EEPROM_WRITE_EN 0x00F0
-#define EEPROM_WRITE_DIS 0x0000
-#define EEPROM_WRITE_CMD 0x0100
-#define EEPROM_READ_CMD 0x0200
-
-/* Receive Header */
-/* Description of header of each packet in receive area of memory */
-#define RBUF_EVENT_LOW 0 /* Low byte of RxEvent - status of received frame */
-#define RBUF_EVENT_HIGH 1 /* High byte of RxEvent - status of received frame */
-#define RBUF_LEN_LOW 2 /* Length of received data - low byte */
-#define RBUF_LEN_HI 3 /* Length of received data - high byte */
-#define RBUF_HEAD_LEN 4 /* Length of this header */
-
-#define CHIP_READ 0x1 /* Used to mark state of the repins code (chip or dma) */
-#define DMA_READ 0x2 /* Used to mark state of the repins code (chip or dma) */
-
-/* for bios scan */
-/* */
-#ifdef CSDEBUG
-/* use these values for debugging bios scan */
-#define BIOS_START_SEG 0x00000
-#define BIOS_OFFSET_INC 0x0010
-#else
-#define BIOS_START_SEG 0x0c000
-#define BIOS_OFFSET_INC 0x0200
-#endif
-
-#define BIOS_LAST_OFFSET 0x0fc00
-
-/* Byte offsets into the EEPROM configuration buffer */
-#define ISA_CNF_OFFSET 0x6
-#define TX_CTL_OFFSET (ISA_CNF_OFFSET + 8) /* 8900 eeprom */
-#define AUTO_NEG_CNF_OFFSET (ISA_CNF_OFFSET + 8) /* 8920 eeprom */
-
- /* the assumption here is that the bits in the eeprom are generally */
- /* in the same position as those in the autonegctl register. */
- /* Of course the IMM bit is not in that register so it must be */
- /* masked out */
-#define EE_FORCE_FDX 0x8000
-#define EE_NLP_ENABLE 0x0200
-#define EE_AUTO_NEG_ENABLE 0x0100
-#define EE_ALLOW_FDX 0x0080
-#define EE_AUTO_NEG_CNF_MASK (EE_FORCE_FDX|EE_NLP_ENABLE|EE_AUTO_NEG_ENABLE|EE_ALLOW_FDX)
-
-#define IMM_BIT 0x0040 /* ignore missing media */
-
-#define ADAPTER_CNF_OFFSET (AUTO_NEG_CNF_OFFSET + 2)
-#define A_CNF_10B_T 0x0001
-#define A_CNF_AUI 0x0002
-#define A_CNF_10B_2 0x0004
-#define A_CNF_MEDIA_TYPE 0x0070
-#define A_CNF_MEDIA_AUTO 0x0070
-#define A_CNF_MEDIA_10B_T 0x0020
-#define A_CNF_MEDIA_AUI 0x0040
-#define A_CNF_MEDIA_10B_2 0x0010
-#define A_CNF_DC_DC_POLARITY 0x0080
-#define A_CNF_NO_AUTO_POLARITY 0x2000
-#define A_CNF_LOW_RX_SQUELCH 0x4000
-#define A_CNF_EXTND_10B_2 0x8000
-
-#define PACKET_PAGE_OFFSET 0x8
-
-/* Bit definitions for the ISA configuration word from the EEPROM */
-#define INT_NO_MASK 0x000F
-#define DMA_NO_MASK 0x0070
-#define ISA_DMA_SIZE 0x0200
-#define ISA_AUTO_RxDMA 0x0400
-#define ISA_RxDMA 0x0800
-#define DMA_BURST 0x1000
-#define STREAM_TRANSFER 0x2000
-#define ANY_ISA_DMA (ISA_AUTO_RxDMA | ISA_RxDMA)
-
-/* DMA controller registers */
-#define DMA_BASE 0x00 /* DMA controller base */
-#define DMA_BASE_2 0x0C0 /* DMA controller base */
-
-#define DMA_STAT 0x0D0 /* DMA controller status register */
-#define DMA_MASK 0x0D4 /* DMA controller mask register */
-#define DMA_MODE 0x0D6 /* DMA controller mode register */
-#define DMA_RESETFF 0x0D8 /* DMA controller first/last flip flop */
-
-/* DMA data */
-#define DMA_DISABLE 0x04 /* Disable channel n */
-#define DMA_ENABLE 0x00 /* Enable channel n */
-/* Demand transfers, incr. address, auto init, writes, ch. n */
-#define DMA_RX_MODE 0x14
-/* Demand transfers, incr. address, auto init, reads, ch. n */
-#define DMA_TX_MODE 0x18
-
-#define DMA_SIZE (16*1024) /* Size of dma buffer - 16k */
-
-#define CS8900 0x0000
-#define CS8920 0x4000
-#define CS8920M 0x6000
-#define REVISON_BITS 0x1F00
-#define EEVER_NUMBER 0x12
-#define CHKSUM_LEN 0x14
-#define CHKSUM_VAL 0x0000
-#define START_EEPROM_DATA 0x001c /* Offset into eeprom for start of data */
-#define IRQ_MAP_EEPROM_DATA 0x0046 /* Offset into eeprom for the IRQ map */
-#define IRQ_MAP_LEN 0x0004 /* No of bytes to read for the IRQ map */
-#define PNP_IRQ_FRMT 0x0022 /* PNP small item IRQ format */
-#define CS8900_IRQ_MAP 0x1c20 /* This IRQ map is fixed */
-
-#define CS8920_NO_INTS 0x0F /* Max CS8920 interrupt select # */
-
-#define PNP_ADD_PORT 0x0279
-#define PNP_WRITE_PORT 0x0A79
-
-#define GET_PNP_ISA_STRUCT 0x40
-#define PNP_ISA_STRUCT_LEN 0x06
-#define PNP_CSN_CNT_OFF 0x01
-#define PNP_RD_PORT_OFF 0x02
-#define PNP_FUNCTION_OK 0x00
-#define PNP_WAKE 0x03
-#define PNP_RSRC_DATA 0x04
-#define PNP_RSRC_READY 0x01
-#define PNP_STATUS 0x05
-#define PNP_ACTIVATE 0x30
-#define PNP_CNF_IO_H 0x60
-#define PNP_CNF_IO_L 0x61
-#define PNP_CNF_INT 0x70
-#define PNP_CNF_DMA 0x74
-#define PNP_CNF_MEM 0x48
-
-#define BIT0 1
-#define BIT15 0x8000
-
source "drivers/net/ethernet/3com/Kconfig"
source "drivers/net/ethernet/8390/Kconfig"
source "drivers/net/ethernet/amd/Kconfig"
+source "drivers/net/ethernet/apple/Kconfig"
source "drivers/net/ethernet/broadcom/Kconfig"
source "drivers/net/ethernet/brocade/Kconfig"
source "drivers/net/ethernet/chelsio/Kconfig"
obj-$(CONFIG_NET_VENDOR_3COM) += 3com/
obj-$(CONFIG_NET_VENDOR_8390) += 8390/
obj-$(CONFIG_NET_VENDOR_AMD) += amd/
+obj-$(CONFIG_NET_VENDOR_APPLE) += apple/
obj-$(CONFIG_NET_VENDOR_BROADCOM) += broadcom/
obj-$(CONFIG_NET_VENDOR_BROCADE) += brocade/
obj-$(CONFIG_NET_VENDOR_CHELSIO) += chelsio/
--- /dev/null
+#
+# Apple device configuration
+#
+
+config NET_VENDOR_APPLE
+ bool "Apple devices"
+ depends on (PPC_PMAC && PPC32) || MAC || ISA || EISA || MACH_IXDP2351 \
+ || ARCH_IXDP2X01 || MACH_MX31ADS || MACH_QQ2440
+ ---help---
+ If you have a network (Ethernet) card belonging to this class, say Y
+ and read the Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>.
+
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about IBM devices. If you say Y, you will be asked for
+ your specific card in the following questions.
+
+if NET_VENDOR_APPLE
+
+config MACE
+ tristate "MACE (Power Mac ethernet) support"
+ depends on PPC_PMAC && PPC32
+ select CRC32
+ ---help---
+ Power Macintoshes and clones with Ethernet built-in on the
+ motherboard will usually use a MACE (Medium Access Control for
+ Ethernet) interface. Say Y to include support for the MACE chip.
+
+ To compile this driver as a module, choose M here: the module
+ will be called mace.
+
+config MACE_AAUI_PORT
+ bool "Use AAUI port instead of TP by default"
+ depends on MACE
+ ---help---
+ Some Apple machines (notably the Apple Network Server) which use the
+ MACE ethernet chip have an Apple AUI port (small 15-pin connector),
+ instead of an 8-pin RJ45 connector for twisted-pair ethernet. Say
+ Y here if you have such a machine. If unsure, say N.
+ The driver will default to AAUI on ANS anyway, and if you use it as
+ a module, you can provide the port_aaui=0|1 to force the driver.
+
+config BMAC
+ tristate "BMAC (G3 ethernet) support"
+ depends on PPC_PMAC && PPC32
+ select CRC32
+ ---help---
+ Say Y for support of BMAC Ethernet interfaces. These are used on G3
+ computers.
+
+ To compile this driver as a module, choose M here: the module
+ will be called bmac.
+
+config MAC89x0
+ tristate "Macintosh CS89x0 based ethernet cards"
+ depends on MAC
+ ---help---
+ Support for CS89x0 chipset based Ethernet cards. If you have a
+ Nubus or LC-PDS network (Ethernet) card of this type, say Y and
+ read the Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>.
+
+ To compile this driver as a module, choose M here. This module will
+ be called mac89x0.
+
+config MACMACE
+ bool "Macintosh (AV) onboard MACE ethernet"
+ depends on MAC
+ select CRC32
+ ---help---
+ Support for the onboard AMD 79C940 MACE Ethernet controller used in
+ the 660AV and 840AV Macintosh. If you have one of these Macintoshes
+ say Y and read the Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>.
+
+config CS89x0
+ tristate "CS89x0 support"
+ depends on (ISA || EISA || MACH_IXDP2351 \
+ || ARCH_IXDP2X01 || MACH_MX31ADS || MACH_QQ2440)
+ ---help---
+ Support for CS89x0 chipset based Ethernet cards. If you have a
+ network (Ethernet) card of this type, say Y and read the
+ Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto> as well as
+ <file:Documentation/networking/cs89x0.txt>.
+
+ To compile this driver as a module, choose M here. The module
+ will be called cs89x0.
+
+config CS89x0_NONISA_IRQ
+ def_bool y
+ depends on CS89x0 != n
+ depends on MACH_IXDP2351 || ARCH_IXDP2X01 || MACH_MX31ADS || MACH_QQ2440
+
+endif # NET_VENDOR_APPLE
--- /dev/null
+#
+# Makefile for the Apple network device drivers.
+#
+
+obj-$(CONFIG_MACE) += mace.o
+obj-$(CONFIG_BMAC) += bmac.o
+obj-$(CONFIG_MAC89x0) += mac89x0.o
+obj-$(CONFIG_CS89x0) += cs89x0.o
+obj-$(CONFIG_MACMACE) += macmace.o
--- /dev/null
+/*
+ * Network device driver for the BMAC ethernet controller on
+ * Apple Powermacs. Assumes it's under a DBDMA controller.
+ *
+ * Copyright (C) 1998 Randy Gobbel.
+ *
+ * May 1999, Al Viro: proper release of /proc/net/bmac entry, switched to
+ * dynamic procfs inode.
+ */
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/crc32.h>
+#include <linux/bitrev.h>
+#include <linux/ethtool.h>
+#include <linux/slab.h>
+#include <asm/prom.h>
+#include <asm/dbdma.h>
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/machdep.h>
+#include <asm/pmac_feature.h>
+#include <asm/macio.h>
+#include <asm/irq.h>
+
+#include "bmac.h"
+
+#define trunc_page(x) ((void *)(((unsigned long)(x)) & ~((unsigned long)(PAGE_SIZE - 1))))
+#define round_page(x) trunc_page(((unsigned long)(x)) + ((unsigned long)(PAGE_SIZE - 1)))
+
+/*
+ * CRC polynomial - used in working out multicast filter bits.
+ */
+#define ENET_CRCPOLY 0x04c11db7
+
+/* switch to use multicast code lifted from sunhme driver */
+#define SUNHME_MULTICAST
+
+#define N_RX_RING 64
+#define N_TX_RING 32
+#define MAX_TX_ACTIVE 1
+#define ETHERCRC 4
+#define ETHERMINPACKET 64
+#define ETHERMTU 1500
+#define RX_BUFLEN (ETHERMTU + 14 + ETHERCRC + 2)
+#define TX_TIMEOUT HZ /* 1 second */
+
+/* Bits in transmit DMA status */
+#define TX_DMA_ERR 0x80
+
+#define XXDEBUG(args)
+
+struct bmac_data {
+ /* volatile struct bmac *bmac; */
+ struct sk_buff_head *queue;
+ volatile struct dbdma_regs __iomem *tx_dma;
+ int tx_dma_intr;
+ volatile struct dbdma_regs __iomem *rx_dma;
+ int rx_dma_intr;
+ volatile struct dbdma_cmd *tx_cmds; /* xmit dma command list */
+ volatile struct dbdma_cmd *rx_cmds; /* recv dma command list */
+ struct macio_dev *mdev;
+ int is_bmac_plus;
+ struct sk_buff *rx_bufs[N_RX_RING];
+ int rx_fill;
+ int rx_empty;
+ struct sk_buff *tx_bufs[N_TX_RING];
+ int tx_fill;
+ int tx_empty;
+ unsigned char tx_fullup;
+ struct timer_list tx_timeout;
+ int timeout_active;
+ int sleeping;
+ int opened;
+ unsigned short hash_use_count[64];
+ unsigned short hash_table_mask[4];
+ spinlock_t lock;
+};
+
+#if 0 /* Move that to ethtool */
+
+typedef struct bmac_reg_entry {
+ char *name;
+ unsigned short reg_offset;
+} bmac_reg_entry_t;
+
+#define N_REG_ENTRIES 31
+
+static bmac_reg_entry_t reg_entries[N_REG_ENTRIES] = {
+ {"MEMADD", MEMADD},
+ {"MEMDATAHI", MEMDATAHI},
+ {"MEMDATALO", MEMDATALO},
+ {"TXPNTR", TXPNTR},
+ {"RXPNTR", RXPNTR},
+ {"IPG1", IPG1},
+ {"IPG2", IPG2},
+ {"ALIMIT", ALIMIT},
+ {"SLOT", SLOT},
+ {"PALEN", PALEN},
+ {"PAPAT", PAPAT},
+ {"TXSFD", TXSFD},
+ {"JAM", JAM},
+ {"TXCFG", TXCFG},
+ {"TXMAX", TXMAX},
+ {"TXMIN", TXMIN},
+ {"PAREG", PAREG},
+ {"DCNT", DCNT},
+ {"NCCNT", NCCNT},
+ {"NTCNT", NTCNT},
+ {"EXCNT", EXCNT},
+ {"LTCNT", LTCNT},
+ {"TXSM", TXSM},
+ {"RXCFG", RXCFG},
+ {"RXMAX", RXMAX},
+ {"RXMIN", RXMIN},
+ {"FRCNT", FRCNT},
+ {"AECNT", AECNT},
+ {"FECNT", FECNT},
+ {"RXSM", RXSM},
+ {"RXCV", RXCV}
+};
+
+#endif
+
+static unsigned char *bmac_emergency_rxbuf;
+
+/*
+ * Number of bytes of private data per BMAC: allow enough for
+ * the rx and tx dma commands plus a branch dma command each,
+ * and another 16 bytes to allow us to align the dma command
+ * buffers on a 16 byte boundary.
+ */
+#define PRIV_BYTES (sizeof(struct bmac_data) \
+ + (N_RX_RING + N_TX_RING + 4) * sizeof(struct dbdma_cmd) \
+ + sizeof(struct sk_buff_head))
+
+static int bmac_open(struct net_device *dev);
+static int bmac_close(struct net_device *dev);
+static int bmac_transmit_packet(struct sk_buff *skb, struct net_device *dev);
+static void bmac_set_multicast(struct net_device *dev);
+static void bmac_reset_and_enable(struct net_device *dev);
+static void bmac_start_chip(struct net_device *dev);
+static void bmac_init_chip(struct net_device *dev);
+static void bmac_init_registers(struct net_device *dev);
+static void bmac_enable_and_reset_chip(struct net_device *dev);
+static int bmac_set_address(struct net_device *dev, void *addr);
+static irqreturn_t bmac_misc_intr(int irq, void *dev_id);
+static irqreturn_t bmac_txdma_intr(int irq, void *dev_id);
+static irqreturn_t bmac_rxdma_intr(int irq, void *dev_id);
+static void bmac_set_timeout(struct net_device *dev);
+static void bmac_tx_timeout(unsigned long data);
+static int bmac_output(struct sk_buff *skb, struct net_device *dev);
+static void bmac_start(struct net_device *dev);
+
+#define DBDMA_SET(x) ( ((x) | (x) << 16) )
+#define DBDMA_CLEAR(x) ( (x) << 16)
+
+static inline void
+dbdma_st32(volatile __u32 __iomem *a, unsigned long x)
+{
+ __asm__ volatile( "stwbrx %0,0,%1" : : "r" (x), "r" (a) : "memory");
+}
+
+static inline unsigned long
+dbdma_ld32(volatile __u32 __iomem *a)
+{
+ __u32 swap;
+ __asm__ volatile ("lwbrx %0,0,%1" : "=r" (swap) : "r" (a));
+ return swap;
+}
+
+static void
+dbdma_continue(volatile struct dbdma_regs __iomem *dmap)
+{
+ dbdma_st32(&dmap->control,
+ DBDMA_SET(RUN|WAKE) | DBDMA_CLEAR(PAUSE|DEAD));
+ eieio();
+}
+
+static void
+dbdma_reset(volatile struct dbdma_regs __iomem *dmap)
+{
+ dbdma_st32(&dmap->control,
+ DBDMA_CLEAR(ACTIVE|DEAD|WAKE|FLUSH|PAUSE|RUN));
+ eieio();
+ while (dbdma_ld32(&dmap->status) & RUN)
+ eieio();
+}
+
+static void
+dbdma_setcmd(volatile struct dbdma_cmd *cp,
+ unsigned short cmd, unsigned count, unsigned long addr,
+ unsigned long cmd_dep)
+{
+ out_le16(&cp->command, cmd);
+ out_le16(&cp->req_count, count);
+ out_le32(&cp->phy_addr, addr);
+ out_le32(&cp->cmd_dep, cmd_dep);
+ out_le16(&cp->xfer_status, 0);
+ out_le16(&cp->res_count, 0);
+}
+
+static inline
+void bmwrite(struct net_device *dev, unsigned long reg_offset, unsigned data )
+{
+ out_le16((void __iomem *)dev->base_addr + reg_offset, data);
+}
+
+
+static inline
+unsigned short bmread(struct net_device *dev, unsigned long reg_offset )
+{
+ return in_le16((void __iomem *)dev->base_addr + reg_offset);
+}
+
+static void
+bmac_enable_and_reset_chip(struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
+ volatile struct dbdma_regs __iomem *td = bp->tx_dma;
+
+ if (rd)
+ dbdma_reset(rd);
+ if (td)
+ dbdma_reset(td);
+
+ pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 1);
+}
+
+#define MIFDELAY udelay(10)
+
+static unsigned int
+bmac_mif_readbits(struct net_device *dev, int nb)
+{
+ unsigned int val = 0;
+
+ while (--nb >= 0) {
+ bmwrite(dev, MIFCSR, 0);
+ MIFDELAY;
+ if (bmread(dev, MIFCSR) & 8)
+ val |= 1 << nb;
+ bmwrite(dev, MIFCSR, 1);
+ MIFDELAY;
+ }
+ bmwrite(dev, MIFCSR, 0);
+ MIFDELAY;
+ bmwrite(dev, MIFCSR, 1);
+ MIFDELAY;
+ return val;
+}
+
+static void
+bmac_mif_writebits(struct net_device *dev, unsigned int val, int nb)
+{
+ int b;
+
+ while (--nb >= 0) {
+ b = (val & (1 << nb))? 6: 4;
+ bmwrite(dev, MIFCSR, b);
+ MIFDELAY;
+ bmwrite(dev, MIFCSR, b|1);
+ MIFDELAY;
+ }
+}
+
+static unsigned int
+bmac_mif_read(struct net_device *dev, unsigned int addr)
+{
+ unsigned int val;
+
+ bmwrite(dev, MIFCSR, 4);
+ MIFDELAY;
+ bmac_mif_writebits(dev, ~0U, 32);
+ bmac_mif_writebits(dev, 6, 4);
+ bmac_mif_writebits(dev, addr, 10);
+ bmwrite(dev, MIFCSR, 2);
+ MIFDELAY;
+ bmwrite(dev, MIFCSR, 1);
+ MIFDELAY;
+ val = bmac_mif_readbits(dev, 17);
+ bmwrite(dev, MIFCSR, 4);
+ MIFDELAY;
+ return val;
+}
+
+static void
+bmac_mif_write(struct net_device *dev, unsigned int addr, unsigned int val)
+{
+ bmwrite(dev, MIFCSR, 4);
+ MIFDELAY;
+ bmac_mif_writebits(dev, ~0U, 32);
+ bmac_mif_writebits(dev, 5, 4);
+ bmac_mif_writebits(dev, addr, 10);
+ bmac_mif_writebits(dev, 2, 2);
+ bmac_mif_writebits(dev, val, 16);
+ bmac_mif_writebits(dev, 3, 2);
+}
+
+static void
+bmac_init_registers(struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ volatile unsigned short regValue;
+ unsigned short *pWord16;
+ int i;
+
+ /* XXDEBUG(("bmac: enter init_registers\n")); */
+
+ bmwrite(dev, RXRST, RxResetValue);
+ bmwrite(dev, TXRST, TxResetBit);
+
+ i = 100;
+ do {
+ --i;
+ udelay(10000);
+ regValue = bmread(dev, TXRST); /* wait for reset to clear..acknowledge */
+ } while ((regValue & TxResetBit) && i > 0);
+
+ if (!bp->is_bmac_plus) {
+ regValue = bmread(dev, XCVRIF);
+ regValue |= ClkBit | SerialMode | COLActiveLow;
+ bmwrite(dev, XCVRIF, regValue);
+ udelay(10000);
+ }
+
+ bmwrite(dev, RSEED, (unsigned short)0x1968);
+
+ regValue = bmread(dev, XIFC);
+ regValue |= TxOutputEnable;
+ bmwrite(dev, XIFC, regValue);
+
+ bmread(dev, PAREG);
+
+ /* set collision counters to 0 */
+ bmwrite(dev, NCCNT, 0);
+ bmwrite(dev, NTCNT, 0);
+ bmwrite(dev, EXCNT, 0);
+ bmwrite(dev, LTCNT, 0);
+
+ /* set rx counters to 0 */
+ bmwrite(dev, FRCNT, 0);
+ bmwrite(dev, LECNT, 0);
+ bmwrite(dev, AECNT, 0);
+ bmwrite(dev, FECNT, 0);
+ bmwrite(dev, RXCV, 0);
+
+ /* set tx fifo information */
+ bmwrite(dev, TXTH, 4); /* 4 octets before tx starts */
+
+ bmwrite(dev, TXFIFOCSR, 0); /* first disable txFIFO */
+ bmwrite(dev, TXFIFOCSR, TxFIFOEnable );
+
+ /* set rx fifo information */
+ bmwrite(dev, RXFIFOCSR, 0); /* first disable rxFIFO */
+ bmwrite(dev, RXFIFOCSR, RxFIFOEnable );
+
+ //bmwrite(dev, TXCFG, TxMACEnable); /* TxNeverGiveUp maybe later */
+ bmread(dev, STATUS); /* read it just to clear it */
+
+ /* zero out the chip Hash Filter registers */
+ for (i=0; i<4; i++) bp->hash_table_mask[i] = 0;
+ bmwrite(dev, BHASH3, bp->hash_table_mask[0]); /* bits 15 - 0 */
+ bmwrite(dev, BHASH2, bp->hash_table_mask[1]); /* bits 31 - 16 */
+ bmwrite(dev, BHASH1, bp->hash_table_mask[2]); /* bits 47 - 32 */
+ bmwrite(dev, BHASH0, bp->hash_table_mask[3]); /* bits 63 - 48 */
+
+ pWord16 = (unsigned short *)dev->dev_addr;
+ bmwrite(dev, MADD0, *pWord16++);
+ bmwrite(dev, MADD1, *pWord16++);
+ bmwrite(dev, MADD2, *pWord16);
+
+ bmwrite(dev, RXCFG, RxCRCNoStrip | RxHashFilterEnable | RxRejectOwnPackets);
+
+ bmwrite(dev, INTDISABLE, EnableNormal);
+}
+
+#if 0
+static void
+bmac_disable_interrupts(struct net_device *dev)
+{
+ bmwrite(dev, INTDISABLE, DisableAll);
+}
+
+static void
+bmac_enable_interrupts(struct net_device *dev)
+{
+ bmwrite(dev, INTDISABLE, EnableNormal);
+}
+#endif
+
+
+static void
+bmac_start_chip(struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
+ unsigned short oldConfig;
+
+ /* enable rx dma channel */
+ dbdma_continue(rd);
+
+ oldConfig = bmread(dev, TXCFG);
+ bmwrite(dev, TXCFG, oldConfig | TxMACEnable );
+
+ /* turn on rx plus any other bits already on (promiscuous possibly) */
+ oldConfig = bmread(dev, RXCFG);
+ bmwrite(dev, RXCFG, oldConfig | RxMACEnable );
+ udelay(20000);
+}
+
+static void
+bmac_init_phy(struct net_device *dev)
+{
+ unsigned int addr;
+ struct bmac_data *bp = netdev_priv(dev);
+
+ printk(KERN_DEBUG "phy registers:");
+ for (addr = 0; addr < 32; ++addr) {
+ if ((addr & 7) == 0)
+ printk(KERN_DEBUG);
+ printk(KERN_CONT " %.4x", bmac_mif_read(dev, addr));
+ }
+ printk(KERN_CONT "\n");
+
+ if (bp->is_bmac_plus) {
+ unsigned int capable, ctrl;
+
+ ctrl = bmac_mif_read(dev, 0);
+ capable = ((bmac_mif_read(dev, 1) & 0xf800) >> 6) | 1;
+ if (bmac_mif_read(dev, 4) != capable ||
+ (ctrl & 0x1000) == 0) {
+ bmac_mif_write(dev, 4, capable);
+ bmac_mif_write(dev, 0, 0x1200);
+ } else
+ bmac_mif_write(dev, 0, 0x1000);
+ }
+}
+
+static void bmac_init_chip(struct net_device *dev)
+{
+ bmac_init_phy(dev);
+ bmac_init_registers(dev);
+}
+
+#ifdef CONFIG_PM
+static int bmac_suspend(struct macio_dev *mdev, pm_message_t state)
+{
+ struct net_device* dev = macio_get_drvdata(mdev);
+ struct bmac_data *bp = netdev_priv(dev);
+ unsigned long flags;
+ unsigned short config;
+ int i;
+
+ netif_device_detach(dev);
+ /* prolly should wait for dma to finish & turn off the chip */
+ spin_lock_irqsave(&bp->lock, flags);
+ if (bp->timeout_active) {
+ del_timer(&bp->tx_timeout);
+ bp->timeout_active = 0;
+ }
+ disable_irq(dev->irq);
+ disable_irq(bp->tx_dma_intr);
+ disable_irq(bp->rx_dma_intr);
+ bp->sleeping = 1;
+ spin_unlock_irqrestore(&bp->lock, flags);
+ if (bp->opened) {
+ volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
+ volatile struct dbdma_regs __iomem *td = bp->tx_dma;
+
+ config = bmread(dev, RXCFG);
+ bmwrite(dev, RXCFG, (config & ~RxMACEnable));
+ config = bmread(dev, TXCFG);
+ bmwrite(dev, TXCFG, (config & ~TxMACEnable));
+ bmwrite(dev, INTDISABLE, DisableAll); /* disable all intrs */
+ /* disable rx and tx dma */
+ st_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */
+ st_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */
+ /* free some skb's */
+ for (i=0; i<N_RX_RING; i++) {
+ if (bp->rx_bufs[i] != NULL) {
+ dev_kfree_skb(bp->rx_bufs[i]);
+ bp->rx_bufs[i] = NULL;
+ }
+ }
+ for (i = 0; i<N_TX_RING; i++) {
+ if (bp->tx_bufs[i] != NULL) {
+ dev_kfree_skb(bp->tx_bufs[i]);
+ bp->tx_bufs[i] = NULL;
+ }
+ }
+ }
+ pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);
+ return 0;
+}
+
+static int bmac_resume(struct macio_dev *mdev)
+{
+ struct net_device* dev = macio_get_drvdata(mdev);
+ struct bmac_data *bp = netdev_priv(dev);
+
+ /* see if this is enough */
+ if (bp->opened)
+ bmac_reset_and_enable(dev);
+
+ enable_irq(dev->irq);
+ enable_irq(bp->tx_dma_intr);
+ enable_irq(bp->rx_dma_intr);
+ netif_device_attach(dev);
+
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+static int bmac_set_address(struct net_device *dev, void *addr)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ unsigned char *p = addr;
+ unsigned short *pWord16;
+ unsigned long flags;
+ int i;
+
+ XXDEBUG(("bmac: enter set_address\n"));
+ spin_lock_irqsave(&bp->lock, flags);
+
+ for (i = 0; i < 6; ++i) {
+ dev->dev_addr[i] = p[i];
+ }
+ /* load up the hardware address */
+ pWord16 = (unsigned short *)dev->dev_addr;
+ bmwrite(dev, MADD0, *pWord16++);
+ bmwrite(dev, MADD1, *pWord16++);
+ bmwrite(dev, MADD2, *pWord16);
+
+ spin_unlock_irqrestore(&bp->lock, flags);
+ XXDEBUG(("bmac: exit set_address\n"));
+ return 0;
+}
+
+static inline void bmac_set_timeout(struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ if (bp->timeout_active)
+ del_timer(&bp->tx_timeout);
+ bp->tx_timeout.expires = jiffies + TX_TIMEOUT;
+ bp->tx_timeout.function = bmac_tx_timeout;
+ bp->tx_timeout.data = (unsigned long) dev;
+ add_timer(&bp->tx_timeout);
+ bp->timeout_active = 1;
+ spin_unlock_irqrestore(&bp->lock, flags);
+}
+
+static void
+bmac_construct_xmt(struct sk_buff *skb, volatile struct dbdma_cmd *cp)
+{
+ void *vaddr;
+ unsigned long baddr;
+ unsigned long len;
+
+ len = skb->len;
+ vaddr = skb->data;
+ baddr = virt_to_bus(vaddr);
+
+ dbdma_setcmd(cp, (OUTPUT_LAST | INTR_ALWAYS | WAIT_IFCLR), len, baddr, 0);
+}
+
+static void
+bmac_construct_rxbuff(struct sk_buff *skb, volatile struct dbdma_cmd *cp)
+{
+ unsigned char *addr = skb? skb->data: bmac_emergency_rxbuf;
+
+ dbdma_setcmd(cp, (INPUT_LAST | INTR_ALWAYS), RX_BUFLEN,
+ virt_to_bus(addr), 0);
+}
+
+static void
+bmac_init_tx_ring(struct bmac_data *bp)
+{
+ volatile struct dbdma_regs __iomem *td = bp->tx_dma;
+
+ memset((char *)bp->tx_cmds, 0, (N_TX_RING+1) * sizeof(struct dbdma_cmd));
+
+ bp->tx_empty = 0;
+ bp->tx_fill = 0;
+ bp->tx_fullup = 0;
+
+ /* put a branch at the end of the tx command list */
+ dbdma_setcmd(&bp->tx_cmds[N_TX_RING],
+ (DBDMA_NOP | BR_ALWAYS), 0, 0, virt_to_bus(bp->tx_cmds));
+
+ /* reset tx dma */
+ dbdma_reset(td);
+ out_le32(&td->wait_sel, 0x00200020);
+ out_le32(&td->cmdptr, virt_to_bus(bp->tx_cmds));
+}
+
+static int
+bmac_init_rx_ring(struct bmac_data *bp)
+{
+ volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
+ int i;
+ struct sk_buff *skb;
+
+ /* initialize list of sk_buffs for receiving and set up recv dma */
+ memset((char *)bp->rx_cmds, 0,
+ (N_RX_RING + 1) * sizeof(struct dbdma_cmd));
+ for (i = 0; i < N_RX_RING; i++) {
+ if ((skb = bp->rx_bufs[i]) == NULL) {
+ bp->rx_bufs[i] = skb = dev_alloc_skb(RX_BUFLEN+2);
+ if (skb != NULL)
+ skb_reserve(skb, 2);
+ }
+ bmac_construct_rxbuff(skb, &bp->rx_cmds[i]);
+ }
+
+ bp->rx_empty = 0;
+ bp->rx_fill = i;
+
+ /* Put a branch back to the beginning of the receive command list */
+ dbdma_setcmd(&bp->rx_cmds[N_RX_RING],
+ (DBDMA_NOP | BR_ALWAYS), 0, 0, virt_to_bus(bp->rx_cmds));
+
+ /* start rx dma */
+ dbdma_reset(rd);
+ out_le32(&rd->cmdptr, virt_to_bus(bp->rx_cmds));
+
+ return 1;
+}
+
+
+static int bmac_transmit_packet(struct sk_buff *skb, struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ volatile struct dbdma_regs __iomem *td = bp->tx_dma;
+ int i;
+
+ /* see if there's a free slot in the tx ring */
+ /* XXDEBUG(("bmac_xmit_start: empty=%d fill=%d\n", */
+ /* bp->tx_empty, bp->tx_fill)); */
+ i = bp->tx_fill + 1;
+ if (i >= N_TX_RING)
+ i = 0;
+ if (i == bp->tx_empty) {
+ netif_stop_queue(dev);
+ bp->tx_fullup = 1;
+ XXDEBUG(("bmac_transmit_packet: tx ring full\n"));
+ return -1; /* can't take it at the moment */
+ }
+
+ dbdma_setcmd(&bp->tx_cmds[i], DBDMA_STOP, 0, 0, 0);
+
+ bmac_construct_xmt(skb, &bp->tx_cmds[bp->tx_fill]);
+
+ bp->tx_bufs[bp->tx_fill] = skb;
+ bp->tx_fill = i;
+
+ dev->stats.tx_bytes += skb->len;
+
+ dbdma_continue(td);
+
+ return 0;
+}
+
+static int rxintcount;
+
+static irqreturn_t bmac_rxdma_intr(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct bmac_data *bp = netdev_priv(dev);
+ volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
+ volatile struct dbdma_cmd *cp;
+ int i, nb, stat;
+ struct sk_buff *skb;
+ unsigned int residual;
+ int last;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bp->lock, flags);
+
+ if (++rxintcount < 10) {
+ XXDEBUG(("bmac_rxdma_intr\n"));
+ }
+
+ last = -1;
+ i = bp->rx_empty;
+
+ while (1) {
+ cp = &bp->rx_cmds[i];
+ stat = ld_le16(&cp->xfer_status);
+ residual = ld_le16(&cp->res_count);
+ if ((stat & ACTIVE) == 0)
+ break;
+ nb = RX_BUFLEN - residual - 2;
+ if (nb < (ETHERMINPACKET - ETHERCRC)) {
+ skb = NULL;
+ dev->stats.rx_length_errors++;
+ dev->stats.rx_errors++;
+ } else {
+ skb = bp->rx_bufs[i];
+ bp->rx_bufs[i] = NULL;
+ }
+ if (skb != NULL) {
+ nb -= ETHERCRC;
+ skb_put(skb, nb);
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+ ++dev->stats.rx_packets;
+ dev->stats.rx_bytes += nb;
+ } else {
+ ++dev->stats.rx_dropped;
+ }
+ if ((skb = bp->rx_bufs[i]) == NULL) {
+ bp->rx_bufs[i] = skb = dev_alloc_skb(RX_BUFLEN+2);
+ if (skb != NULL)
+ skb_reserve(bp->rx_bufs[i], 2);
+ }
+ bmac_construct_rxbuff(skb, &bp->rx_cmds[i]);
+ st_le16(&cp->res_count, 0);
+ st_le16(&cp->xfer_status, 0);
+ last = i;
+ if (++i >= N_RX_RING) i = 0;
+ }
+
+ if (last != -1) {
+ bp->rx_fill = last;
+ bp->rx_empty = i;
+ }
+
+ dbdma_continue(rd);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ if (rxintcount < 10) {
+ XXDEBUG(("bmac_rxdma_intr done\n"));
+ }
+ return IRQ_HANDLED;
+}
+
+static int txintcount;
+
+static irqreturn_t bmac_txdma_intr(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct bmac_data *bp = netdev_priv(dev);
+ volatile struct dbdma_cmd *cp;
+ int stat;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bp->lock, flags);
+
+ if (txintcount++ < 10) {
+ XXDEBUG(("bmac_txdma_intr\n"));
+ }
+
+ /* del_timer(&bp->tx_timeout); */
+ /* bp->timeout_active = 0; */
+
+ while (1) {
+ cp = &bp->tx_cmds[bp->tx_empty];
+ stat = ld_le16(&cp->xfer_status);
+ if (txintcount < 10) {
+ XXDEBUG(("bmac_txdma_xfer_stat=%#0x\n", stat));
+ }
+ if (!(stat & ACTIVE)) {
+ /*
+ * status field might not have been filled by DBDMA
+ */
+ if (cp == bus_to_virt(in_le32(&bp->tx_dma->cmdptr)))
+ break;
+ }
+
+ if (bp->tx_bufs[bp->tx_empty]) {
+ ++dev->stats.tx_packets;
+ dev_kfree_skb_irq(bp->tx_bufs[bp->tx_empty]);
+ }
+ bp->tx_bufs[bp->tx_empty] = NULL;
+ bp->tx_fullup = 0;
+ netif_wake_queue(dev);
+ if (++bp->tx_empty >= N_TX_RING)
+ bp->tx_empty = 0;
+ if (bp->tx_empty == bp->tx_fill)
+ break;
+ }
+
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ if (txintcount < 10) {
+ XXDEBUG(("bmac_txdma_intr done->bmac_start\n"));
+ }
+
+ bmac_start(dev);
+ return IRQ_HANDLED;
+}
+
+#ifndef SUNHME_MULTICAST
+/* Real fast bit-reversal algorithm, 6-bit values */
+static int reverse6[64] = {
+ 0x0,0x20,0x10,0x30,0x8,0x28,0x18,0x38,
+ 0x4,0x24,0x14,0x34,0xc,0x2c,0x1c,0x3c,
+ 0x2,0x22,0x12,0x32,0xa,0x2a,0x1a,0x3a,
+ 0x6,0x26,0x16,0x36,0xe,0x2e,0x1e,0x3e,
+ 0x1,0x21,0x11,0x31,0x9,0x29,0x19,0x39,
+ 0x5,0x25,0x15,0x35,0xd,0x2d,0x1d,0x3d,
+ 0x3,0x23,0x13,0x33,0xb,0x2b,0x1b,0x3b,
+ 0x7,0x27,0x17,0x37,0xf,0x2f,0x1f,0x3f
+};
+
+static unsigned int
+crc416(unsigned int curval, unsigned short nxtval)
+{
+ register unsigned int counter, cur = curval, next = nxtval;
+ register int high_crc_set, low_data_set;
+
+ /* Swap bytes */
+ next = ((next & 0x00FF) << 8) | (next >> 8);
+
+ /* Compute bit-by-bit */
+ for (counter = 0; counter < 16; ++counter) {
+ /* is high CRC bit set? */
+ if ((cur & 0x80000000) == 0) high_crc_set = 0;
+ else high_crc_set = 1;
+
+ cur = cur << 1;
+
+ if ((next & 0x0001) == 0) low_data_set = 0;
+ else low_data_set = 1;
+
+ next = next >> 1;
+
+ /* do the XOR */
+ if (high_crc_set ^ low_data_set) cur = cur ^ ENET_CRCPOLY;
+ }
+ return cur;
+}
+
+static unsigned int
+bmac_crc(unsigned short *address)
+{
+ unsigned int newcrc;
+
+ XXDEBUG(("bmac_crc: addr=%#04x, %#04x, %#04x\n", *address, address[1], address[2]));
+ newcrc = crc416(0xffffffff, *address); /* address bits 47 - 32 */
+ newcrc = crc416(newcrc, address[1]); /* address bits 31 - 16 */
+ newcrc = crc416(newcrc, address[2]); /* address bits 15 - 0 */
+
+ return(newcrc);
+}
+
+/*
+ * Add requested mcast addr to BMac's hash table filter.
+ *
+ */
+
+static void
+bmac_addhash(struct bmac_data *bp, unsigned char *addr)
+{
+ unsigned int crc;
+ unsigned short mask;
+
+ if (!(*addr)) return;
+ crc = bmac_crc((unsigned short *)addr) & 0x3f; /* Big-endian alert! */
+ crc = reverse6[crc]; /* Hyperfast bit-reversing algorithm */
+ if (bp->hash_use_count[crc]++) return; /* This bit is already set */
+ mask = crc % 16;
+ mask = (unsigned char)1 << mask;
+ bp->hash_use_count[crc/16] |= mask;
+}
+
+static void
+bmac_removehash(struct bmac_data *bp, unsigned char *addr)
+{
+ unsigned int crc;
+ unsigned char mask;
+
+ /* Now, delete the address from the filter copy, as indicated */
+ crc = bmac_crc((unsigned short *)addr) & 0x3f; /* Big-endian alert! */
+ crc = reverse6[crc]; /* Hyperfast bit-reversing algorithm */
+ if (bp->hash_use_count[crc] == 0) return; /* That bit wasn't in use! */
+ if (--bp->hash_use_count[crc]) return; /* That bit is still in use */
+ mask = crc % 16;
+ mask = ((unsigned char)1 << mask) ^ 0xffff; /* To turn off bit */
+ bp->hash_table_mask[crc/16] &= mask;
+}
+
+/*
+ * Sync the adapter with the software copy of the multicast mask
+ * (logical address filter).
+ */
+
+static void
+bmac_rx_off(struct net_device *dev)
+{
+ unsigned short rx_cfg;
+
+ rx_cfg = bmread(dev, RXCFG);
+ rx_cfg &= ~RxMACEnable;
+ bmwrite(dev, RXCFG, rx_cfg);
+ do {
+ rx_cfg = bmread(dev, RXCFG);
+ } while (rx_cfg & RxMACEnable);
+}
+
+unsigned short
+bmac_rx_on(struct net_device *dev, int hash_enable, int promisc_enable)
+{
+ unsigned short rx_cfg;
+
+ rx_cfg = bmread(dev, RXCFG);
+ rx_cfg |= RxMACEnable;
+ if (hash_enable) rx_cfg |= RxHashFilterEnable;
+ else rx_cfg &= ~RxHashFilterEnable;
+ if (promisc_enable) rx_cfg |= RxPromiscEnable;
+ else rx_cfg &= ~RxPromiscEnable;
+ bmwrite(dev, RXRST, RxResetValue);
+ bmwrite(dev, RXFIFOCSR, 0); /* first disable rxFIFO */
+ bmwrite(dev, RXFIFOCSR, RxFIFOEnable );
+ bmwrite(dev, RXCFG, rx_cfg );
+ return rx_cfg;
+}
+
+static void
+bmac_update_hash_table_mask(struct net_device *dev, struct bmac_data *bp)
+{
+ bmwrite(dev, BHASH3, bp->hash_table_mask[0]); /* bits 15 - 0 */
+ bmwrite(dev, BHASH2, bp->hash_table_mask[1]); /* bits 31 - 16 */
+ bmwrite(dev, BHASH1, bp->hash_table_mask[2]); /* bits 47 - 32 */
+ bmwrite(dev, BHASH0, bp->hash_table_mask[3]); /* bits 63 - 48 */
+}
+
+#if 0
+static void
+bmac_add_multi(struct net_device *dev,
+ struct bmac_data *bp, unsigned char *addr)
+{
+ /* XXDEBUG(("bmac: enter bmac_add_multi\n")); */
+ bmac_addhash(bp, addr);
+ bmac_rx_off(dev);
+ bmac_update_hash_table_mask(dev, bp);
+ bmac_rx_on(dev, 1, (dev->flags & IFF_PROMISC)? 1 : 0);
+ /* XXDEBUG(("bmac: exit bmac_add_multi\n")); */
+}
+
+static void
+bmac_remove_multi(struct net_device *dev,
+ struct bmac_data *bp, unsigned char *addr)
+{
+ bmac_removehash(bp, addr);
+ bmac_rx_off(dev);
+ bmac_update_hash_table_mask(dev, bp);
+ bmac_rx_on(dev, 1, (dev->flags & IFF_PROMISC)? 1 : 0);
+}
+#endif
+
+/* Set or clear the multicast filter for this adaptor.
+ num_addrs == -1 Promiscuous mode, receive all packets
+ num_addrs == 0 Normal mode, clear multicast list
+ num_addrs > 0 Multicast mode, receive normal and MC packets, and do
+ best-effort filtering.
+ */
+static void bmac_set_multicast(struct net_device *dev)
+{
+ struct netdev_hw_addr *ha;
+ struct bmac_data *bp = netdev_priv(dev);
+ int num_addrs = netdev_mc_count(dev);
+ unsigned short rx_cfg;
+ int i;
+
+ if (bp->sleeping)
+ return;
+
+ XXDEBUG(("bmac: enter bmac_set_multicast, n_addrs=%d\n", num_addrs));
+
+ if((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {
+ for (i=0; i<4; i++) bp->hash_table_mask[i] = 0xffff;
+ bmac_update_hash_table_mask(dev, bp);
+ rx_cfg = bmac_rx_on(dev, 1, 0);
+ XXDEBUG(("bmac: all multi, rx_cfg=%#08x\n"));
+ } else if ((dev->flags & IFF_PROMISC) || (num_addrs < 0)) {
+ rx_cfg = bmread(dev, RXCFG);
+ rx_cfg |= RxPromiscEnable;
+ bmwrite(dev, RXCFG, rx_cfg);
+ rx_cfg = bmac_rx_on(dev, 0, 1);
+ XXDEBUG(("bmac: promisc mode enabled, rx_cfg=%#08x\n", rx_cfg));
+ } else {
+ for (i=0; i<4; i++) bp->hash_table_mask[i] = 0;
+ for (i=0; i<64; i++) bp->hash_use_count[i] = 0;
+ if (num_addrs == 0) {
+ rx_cfg = bmac_rx_on(dev, 0, 0);
+ XXDEBUG(("bmac: multi disabled, rx_cfg=%#08x\n", rx_cfg));
+ } else {
+ netdev_for_each_mc_addr(ha, dev)
+ bmac_addhash(bp, ha->addr);
+ bmac_update_hash_table_mask(dev, bp);
+ rx_cfg = bmac_rx_on(dev, 1, 0);
+ XXDEBUG(("bmac: multi enabled, rx_cfg=%#08x\n", rx_cfg));
+ }
+ }
+ /* XXDEBUG(("bmac: exit bmac_set_multicast\n")); */
+}
+#else /* ifdef SUNHME_MULTICAST */
+
+/* The version of set_multicast below was lifted from sunhme.c */
+
+static void bmac_set_multicast(struct net_device *dev)
+{
+ struct netdev_hw_addr *ha;
+ int i;
+ unsigned short rx_cfg;
+ u32 crc;
+
+ if((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {
+ bmwrite(dev, BHASH0, 0xffff);
+ bmwrite(dev, BHASH1, 0xffff);
+ bmwrite(dev, BHASH2, 0xffff);
+ bmwrite(dev, BHASH3, 0xffff);
+ } else if(dev->flags & IFF_PROMISC) {
+ rx_cfg = bmread(dev, RXCFG);
+ rx_cfg |= RxPromiscEnable;
+ bmwrite(dev, RXCFG, rx_cfg);
+ } else {
+ u16 hash_table[4];
+
+ rx_cfg = bmread(dev, RXCFG);
+ rx_cfg &= ~RxPromiscEnable;
+ bmwrite(dev, RXCFG, rx_cfg);
+
+ for(i = 0; i < 4; i++) hash_table[i] = 0;
+
+ netdev_for_each_mc_addr(ha, dev) {
+ crc = ether_crc_le(6, ha->addr);
+ crc >>= 26;
+ hash_table[crc >> 4] |= 1 << (crc & 0xf);
+ }
+ bmwrite(dev, BHASH0, hash_table[0]);
+ bmwrite(dev, BHASH1, hash_table[1]);
+ bmwrite(dev, BHASH2, hash_table[2]);
+ bmwrite(dev, BHASH3, hash_table[3]);
+ }
+}
+#endif /* SUNHME_MULTICAST */
+
+static int miscintcount;
+
+static irqreturn_t bmac_misc_intr(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ unsigned int status = bmread(dev, STATUS);
+ if (miscintcount++ < 10) {
+ XXDEBUG(("bmac_misc_intr\n"));
+ }
+ /* XXDEBUG(("bmac_misc_intr, status=%#08x\n", status)); */
+ /* bmac_txdma_intr_inner(irq, dev_id); */
+ /* if (status & FrameReceived) dev->stats.rx_dropped++; */
+ if (status & RxErrorMask) dev->stats.rx_errors++;
+ if (status & RxCRCCntExp) dev->stats.rx_crc_errors++;
+ if (status & RxLenCntExp) dev->stats.rx_length_errors++;
+ if (status & RxOverFlow) dev->stats.rx_over_errors++;
+ if (status & RxAlignCntExp) dev->stats.rx_frame_errors++;
+
+ /* if (status & FrameSent) dev->stats.tx_dropped++; */
+ if (status & TxErrorMask) dev->stats.tx_errors++;
+ if (status & TxUnderrun) dev->stats.tx_fifo_errors++;
+ if (status & TxNormalCollExp) dev->stats.collisions++;
+ return IRQ_HANDLED;
+}
+
+/*
+ * Procedure for reading EEPROM
+ */
+#define SROMAddressLength 5
+#define DataInOn 0x0008
+#define DataInOff 0x0000
+#define Clk 0x0002
+#define ChipSelect 0x0001
+#define SDIShiftCount 3
+#define SD0ShiftCount 2
+#define DelayValue 1000 /* number of microseconds */
+#define SROMStartOffset 10 /* this is in words */
+#define SROMReadCount 3 /* number of words to read from SROM */
+#define SROMAddressBits 6
+#define EnetAddressOffset 20
+
+static unsigned char
+bmac_clock_out_bit(struct net_device *dev)
+{
+ unsigned short data;
+ unsigned short val;
+
+ bmwrite(dev, SROMCSR, ChipSelect | Clk);
+ udelay(DelayValue);
+
+ data = bmread(dev, SROMCSR);
+ udelay(DelayValue);
+ val = (data >> SD0ShiftCount) & 1;
+
+ bmwrite(dev, SROMCSR, ChipSelect);
+ udelay(DelayValue);
+
+ return val;
+}
+
+static void
+bmac_clock_in_bit(struct net_device *dev, unsigned int val)
+{
+ unsigned short data;
+
+ if (val != 0 && val != 1) return;
+
+ data = (val << SDIShiftCount);
+ bmwrite(dev, SROMCSR, data | ChipSelect );
+ udelay(DelayValue);
+
+ bmwrite(dev, SROMCSR, data | ChipSelect | Clk );
+ udelay(DelayValue);
+
+ bmwrite(dev, SROMCSR, data | ChipSelect);
+ udelay(DelayValue);
+}
+
+static void
+reset_and_select_srom(struct net_device *dev)
+{
+ /* first reset */
+ bmwrite(dev, SROMCSR, 0);
+ udelay(DelayValue);
+
+ /* send it the read command (110) */
+ bmac_clock_in_bit(dev, 1);
+ bmac_clock_in_bit(dev, 1);
+ bmac_clock_in_bit(dev, 0);
+}
+
+static unsigned short
+read_srom(struct net_device *dev, unsigned int addr, unsigned int addr_len)
+{
+ unsigned short data, val;
+ int i;
+
+ /* send out the address we want to read from */
+ for (i = 0; i < addr_len; i++) {
+ val = addr >> (addr_len-i-1);
+ bmac_clock_in_bit(dev, val & 1);
+ }
+
+ /* Now read in the 16-bit data */
+ data = 0;
+ for (i = 0; i < 16; i++) {
+ val = bmac_clock_out_bit(dev);
+ data <<= 1;
+ data |= val;
+ }
+ bmwrite(dev, SROMCSR, 0);
+
+ return data;
+}
+
+/*
+ * It looks like Cogent and SMC use different methods for calculating
+ * checksums. What a pain..
+ */
+
+static int
+bmac_verify_checksum(struct net_device *dev)
+{
+ unsigned short data, storedCS;
+
+ reset_and_select_srom(dev);
+ data = read_srom(dev, 3, SROMAddressBits);
+ storedCS = ((data >> 8) & 0x0ff) | ((data << 8) & 0xff00);
+
+ return 0;
+}
+
+
+static void
+bmac_get_station_address(struct net_device *dev, unsigned char *ea)
+{
+ int i;
+ unsigned short data;
+
+ for (i = 0; i < 6; i++)
+ {
+ reset_and_select_srom(dev);
+ data = read_srom(dev, i + EnetAddressOffset/2, SROMAddressBits);
+ ea[2*i] = bitrev8(data & 0x0ff);
+ ea[2*i+1] = bitrev8((data >> 8) & 0x0ff);
+ }
+}
+
+static void bmac_reset_and_enable(struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ unsigned long flags;
+ struct sk_buff *skb;
+ unsigned char *data;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ bmac_enable_and_reset_chip(dev);
+ bmac_init_tx_ring(bp);
+ bmac_init_rx_ring(bp);
+ bmac_init_chip(dev);
+ bmac_start_chip(dev);
+ bmwrite(dev, INTDISABLE, EnableNormal);
+ bp->sleeping = 0;
+
+ /*
+ * It seems that the bmac can't receive until it's transmitted
+ * a packet. So we give it a dummy packet to transmit.
+ */
+ skb = dev_alloc_skb(ETHERMINPACKET);
+ if (skb != NULL) {
+ data = skb_put(skb, ETHERMINPACKET);
+ memset(data, 0, ETHERMINPACKET);
+ memcpy(data, dev->dev_addr, 6);
+ memcpy(data+6, dev->dev_addr, 6);
+ bmac_transmit_packet(skb, dev);
+ }
+ spin_unlock_irqrestore(&bp->lock, flags);
+}
+
+static const struct ethtool_ops bmac_ethtool_ops = {
+ .get_link = ethtool_op_get_link,
+};
+
+static const struct net_device_ops bmac_netdev_ops = {
+ .ndo_open = bmac_open,
+ .ndo_stop = bmac_close,
+ .ndo_start_xmit = bmac_output,
+ .ndo_set_multicast_list = bmac_set_multicast,
+ .ndo_set_mac_address = bmac_set_address,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static int __devinit bmac_probe(struct macio_dev *mdev, const struct of_device_id *match)
+{
+ int j, rev, ret;
+ struct bmac_data *bp;
+ const unsigned char *prop_addr;
+ unsigned char addr[6];
+ struct net_device *dev;
+ int is_bmac_plus = ((int)match->data) != 0;
+
+ if (macio_resource_count(mdev) != 3 || macio_irq_count(mdev) != 3) {
+ printk(KERN_ERR "BMAC: can't use, need 3 addrs and 3 intrs\n");
+ return -ENODEV;
+ }
+ prop_addr = of_get_property(macio_get_of_node(mdev),
+ "mac-address", NULL);
+ if (prop_addr == NULL) {
+ prop_addr = of_get_property(macio_get_of_node(mdev),
+ "local-mac-address", NULL);
+ if (prop_addr == NULL) {
+ printk(KERN_ERR "BMAC: Can't get mac-address\n");
+ return -ENODEV;
+ }
+ }
+ memcpy(addr, prop_addr, sizeof(addr));
+
+ dev = alloc_etherdev(PRIV_BYTES);
+ if (!dev) {
+ printk(KERN_ERR "BMAC: alloc_etherdev failed, out of memory\n");
+ return -ENOMEM;
+ }
+
+ bp = netdev_priv(dev);
+ SET_NETDEV_DEV(dev, &mdev->ofdev.dev);
+ macio_set_drvdata(mdev, dev);
+
+ bp->mdev = mdev;
+ spin_lock_init(&bp->lock);
+
+ if (macio_request_resources(mdev, "bmac")) {
+ printk(KERN_ERR "BMAC: can't request IO resource !\n");
+ goto out_free;
+ }
+
+ dev->base_addr = (unsigned long)
+ ioremap(macio_resource_start(mdev, 0), macio_resource_len(mdev, 0));
+ if (dev->base_addr == 0)
+ goto out_release;
+
+ dev->irq = macio_irq(mdev, 0);
+
+ bmac_enable_and_reset_chip(dev);
+ bmwrite(dev, INTDISABLE, DisableAll);
+
+ rev = addr[0] == 0 && addr[1] == 0xA0;
+ for (j = 0; j < 6; ++j)
+ dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j];
+
+ /* Enable chip without interrupts for now */
+ bmac_enable_and_reset_chip(dev);
+ bmwrite(dev, INTDISABLE, DisableAll);
+
+ dev->netdev_ops = &bmac_netdev_ops;
+ dev->ethtool_ops = &bmac_ethtool_ops;
+
+ bmac_get_station_address(dev, addr);
+ if (bmac_verify_checksum(dev) != 0)
+ goto err_out_iounmap;
+
+ bp->is_bmac_plus = is_bmac_plus;
+ bp->tx_dma = ioremap(macio_resource_start(mdev, 1), macio_resource_len(mdev, 1));
+ if (!bp->tx_dma)
+ goto err_out_iounmap;
+ bp->tx_dma_intr = macio_irq(mdev, 1);
+ bp->rx_dma = ioremap(macio_resource_start(mdev, 2), macio_resource_len(mdev, 2));
+ if (!bp->rx_dma)
+ goto err_out_iounmap_tx;
+ bp->rx_dma_intr = macio_irq(mdev, 2);
+
+ bp->tx_cmds = (volatile struct dbdma_cmd *) DBDMA_ALIGN(bp + 1);
+ bp->rx_cmds = bp->tx_cmds + N_TX_RING + 1;
+
+ bp->queue = (struct sk_buff_head *)(bp->rx_cmds + N_RX_RING + 1);
+ skb_queue_head_init(bp->queue);
+
+ init_timer(&bp->tx_timeout);
+
+ ret = request_irq(dev->irq, bmac_misc_intr, 0, "BMAC-misc", dev);
+ if (ret) {
+ printk(KERN_ERR "BMAC: can't get irq %d\n", dev->irq);
+ goto err_out_iounmap_rx;
+ }
+ ret = request_irq(bp->tx_dma_intr, bmac_txdma_intr, 0, "BMAC-txdma", dev);
+ if (ret) {
+ printk(KERN_ERR "BMAC: can't get irq %d\n", bp->tx_dma_intr);
+ goto err_out_irq0;
+ }
+ ret = request_irq(bp->rx_dma_intr, bmac_rxdma_intr, 0, "BMAC-rxdma", dev);
+ if (ret) {
+ printk(KERN_ERR "BMAC: can't get irq %d\n", bp->rx_dma_intr);
+ goto err_out_irq1;
+ }
+
+ /* Mask chip interrupts and disable chip, will be
+ * re-enabled on open()
+ */
+ disable_irq(dev->irq);
+ pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);
+
+ if (register_netdev(dev) != 0) {
+ printk(KERN_ERR "BMAC: Ethernet registration failed\n");
+ goto err_out_irq2;
+ }
+
+ printk(KERN_INFO "%s: BMAC%s at %pM",
+ dev->name, (is_bmac_plus ? "+" : ""), dev->dev_addr);
+ XXDEBUG((", base_addr=%#0lx", dev->base_addr));
+ printk("\n");
+
+ return 0;
+
+err_out_irq2:
+ free_irq(bp->rx_dma_intr, dev);
+err_out_irq1:
+ free_irq(bp->tx_dma_intr, dev);
+err_out_irq0:
+ free_irq(dev->irq, dev);
+err_out_iounmap_rx:
+ iounmap(bp->rx_dma);
+err_out_iounmap_tx:
+ iounmap(bp->tx_dma);
+err_out_iounmap:
+ iounmap((void __iomem *)dev->base_addr);
+out_release:
+ macio_release_resources(mdev);
+out_free:
+ pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);
+ free_netdev(dev);
+
+ return -ENODEV;
+}
+
+static int bmac_open(struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ /* XXDEBUG(("bmac: enter open\n")); */
+ /* reset the chip */
+ bp->opened = 1;
+ bmac_reset_and_enable(dev);
+ enable_irq(dev->irq);
+ return 0;
+}
+
+static int bmac_close(struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
+ volatile struct dbdma_regs __iomem *td = bp->tx_dma;
+ unsigned short config;
+ int i;
+
+ bp->sleeping = 1;
+
+ /* disable rx and tx */
+ config = bmread(dev, RXCFG);
+ bmwrite(dev, RXCFG, (config & ~RxMACEnable));
+
+ config = bmread(dev, TXCFG);
+ bmwrite(dev, TXCFG, (config & ~TxMACEnable));
+
+ bmwrite(dev, INTDISABLE, DisableAll); /* disable all intrs */
+
+ /* disable rx and tx dma */
+ st_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */
+ st_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */
+
+ /* free some skb's */
+ XXDEBUG(("bmac: free rx bufs\n"));
+ for (i=0; i<N_RX_RING; i++) {
+ if (bp->rx_bufs[i] != NULL) {
+ dev_kfree_skb(bp->rx_bufs[i]);
+ bp->rx_bufs[i] = NULL;
+ }
+ }
+ XXDEBUG(("bmac: free tx bufs\n"));
+ for (i = 0; i<N_TX_RING; i++) {
+ if (bp->tx_bufs[i] != NULL) {
+ dev_kfree_skb(bp->tx_bufs[i]);
+ bp->tx_bufs[i] = NULL;
+ }
+ }
+ XXDEBUG(("bmac: all bufs freed\n"));
+
+ bp->opened = 0;
+ disable_irq(dev->irq);
+ pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);
+
+ return 0;
+}
+
+static void
+bmac_start(struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ int i;
+ struct sk_buff *skb;
+ unsigned long flags;
+
+ if (bp->sleeping)
+ return;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ while (1) {
+ i = bp->tx_fill + 1;
+ if (i >= N_TX_RING)
+ i = 0;
+ if (i == bp->tx_empty)
+ break;
+ skb = skb_dequeue(bp->queue);
+ if (skb == NULL)
+ break;
+ bmac_transmit_packet(skb, dev);
+ }
+ spin_unlock_irqrestore(&bp->lock, flags);
+}
+
+static int
+bmac_output(struct sk_buff *skb, struct net_device *dev)
+{
+ struct bmac_data *bp = netdev_priv(dev);
+ skb_queue_tail(bp->queue, skb);
+ bmac_start(dev);
+ return NETDEV_TX_OK;
+}
+
+static void bmac_tx_timeout(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct bmac_data *bp = netdev_priv(dev);
+ volatile struct dbdma_regs __iomem *td = bp->tx_dma;
+ volatile struct dbdma_regs __iomem *rd = bp->rx_dma;
+ volatile struct dbdma_cmd *cp;
+ unsigned long flags;
+ unsigned short config, oldConfig;
+ int i;
+
+ XXDEBUG(("bmac: tx_timeout called\n"));
+ spin_lock_irqsave(&bp->lock, flags);
+ bp->timeout_active = 0;
+
+ /* update various counters */
+/* bmac_handle_misc_intrs(bp, 0); */
+
+ cp = &bp->tx_cmds[bp->tx_empty];
+/* XXDEBUG((KERN_DEBUG "bmac: tx dmastat=%x %x runt=%d pr=%x fs=%x fc=%x\n", */
+/* ld_le32(&td->status), ld_le16(&cp->xfer_status), bp->tx_bad_runt, */
+/* mb->pr, mb->xmtfs, mb->fifofc)); */
+
+ /* turn off both tx and rx and reset the chip */
+ config = bmread(dev, RXCFG);
+ bmwrite(dev, RXCFG, (config & ~RxMACEnable));
+ config = bmread(dev, TXCFG);
+ bmwrite(dev, TXCFG, (config & ~TxMACEnable));
+ out_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE|ACTIVE|DEAD));
+ printk(KERN_ERR "bmac: transmit timeout - resetting\n");
+ bmac_enable_and_reset_chip(dev);
+
+ /* restart rx dma */
+ cp = bus_to_virt(ld_le32(&rd->cmdptr));
+ out_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE|ACTIVE|DEAD));
+ out_le16(&cp->xfer_status, 0);
+ out_le32(&rd->cmdptr, virt_to_bus(cp));
+ out_le32(&rd->control, DBDMA_SET(RUN|WAKE));
+
+ /* fix up the transmit side */
+ XXDEBUG((KERN_DEBUG "bmac: tx empty=%d fill=%d fullup=%d\n",
+ bp->tx_empty, bp->tx_fill, bp->tx_fullup));
+ i = bp->tx_empty;
+ ++dev->stats.tx_errors;
+ if (i != bp->tx_fill) {
+ dev_kfree_skb(bp->tx_bufs[i]);
+ bp->tx_bufs[i] = NULL;
+ if (++i >= N_TX_RING) i = 0;
+ bp->tx_empty = i;
+ }
+ bp->tx_fullup = 0;
+ netif_wake_queue(dev);
+ if (i != bp->tx_fill) {
+ cp = &bp->tx_cmds[i];
+ out_le16(&cp->xfer_status, 0);
+ out_le16(&cp->command, OUTPUT_LAST);
+ out_le32(&td->cmdptr, virt_to_bus(cp));
+ out_le32(&td->control, DBDMA_SET(RUN));
+ /* bmac_set_timeout(dev); */
+ XXDEBUG((KERN_DEBUG "bmac: starting %d\n", i));
+ }
+
+ /* turn it back on */
+ oldConfig = bmread(dev, RXCFG);
+ bmwrite(dev, RXCFG, oldConfig | RxMACEnable );
+ oldConfig = bmread(dev, TXCFG);
+ bmwrite(dev, TXCFG, oldConfig | TxMACEnable );
+
+ spin_unlock_irqrestore(&bp->lock, flags);
+}
+
+#if 0
+static void dump_dbdma(volatile struct dbdma_cmd *cp,int count)
+{
+ int i,*ip;
+
+ for (i=0;i< count;i++) {
+ ip = (int*)(cp+i);
+
+ printk("dbdma req 0x%x addr 0x%x baddr 0x%x xfer/res 0x%x\n",
+ ld_le32(ip+0),
+ ld_le32(ip+1),
+ ld_le32(ip+2),
+ ld_le32(ip+3));
+ }
+
+}
+#endif
+
+#if 0
+static int
+bmac_proc_info(char *buffer, char **start, off_t offset, int length)
+{
+ int len = 0;
+ off_t pos = 0;
+ off_t begin = 0;
+ int i;
+
+ if (bmac_devs == NULL)
+ return -ENOSYS;
+
+ len += sprintf(buffer, "BMAC counters & registers\n");
+
+ for (i = 0; i<N_REG_ENTRIES; i++) {
+ len += sprintf(buffer + len, "%s: %#08x\n",
+ reg_entries[i].name,
+ bmread(bmac_devs, reg_entries[i].reg_offset));
+ pos = begin + len;
+
+ if (pos < offset) {
+ len = 0;
+ begin = pos;
+ }
+
+ if (pos > offset+length) break;
+ }
+
+ *start = buffer + (offset - begin);
+ len -= (offset - begin);
+
+ if (len > length) len = length;
+
+ return len;
+}
+#endif
+
+static int __devexit bmac_remove(struct macio_dev *mdev)
+{
+ struct net_device *dev = macio_get_drvdata(mdev);
+ struct bmac_data *bp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+
+ free_irq(dev->irq, dev);
+ free_irq(bp->tx_dma_intr, dev);
+ free_irq(bp->rx_dma_intr, dev);
+
+ iounmap((void __iomem *)dev->base_addr);
+ iounmap(bp->tx_dma);
+ iounmap(bp->rx_dma);
+
+ macio_release_resources(mdev);
+
+ free_netdev(dev);
+
+ return 0;
+}
+
+static struct of_device_id bmac_match[] =
+{
+ {
+ .name = "bmac",
+ .data = (void *)0,
+ },
+ {
+ .type = "network",
+ .compatible = "bmac+",
+ .data = (void *)1,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE (of, bmac_match);
+
+static struct macio_driver bmac_driver =
+{
+ .driver = {
+ .name = "bmac",
+ .owner = THIS_MODULE,
+ .of_match_table = bmac_match,
+ },
+ .probe = bmac_probe,
+ .remove = bmac_remove,
+#ifdef CONFIG_PM
+ .suspend = bmac_suspend,
+ .resume = bmac_resume,
+#endif
+};
+
+
+static int __init bmac_init(void)
+{
+ if (bmac_emergency_rxbuf == NULL) {
+ bmac_emergency_rxbuf = kmalloc(RX_BUFLEN, GFP_KERNEL);
+ if (bmac_emergency_rxbuf == NULL) {
+ printk(KERN_ERR "BMAC: can't allocate emergency RX buffer\n");
+ return -ENOMEM;
+ }
+ }
+
+ return macio_register_driver(&bmac_driver);
+}
+
+static void __exit bmac_exit(void)
+{
+ macio_unregister_driver(&bmac_driver);
+
+ kfree(bmac_emergency_rxbuf);
+ bmac_emergency_rxbuf = NULL;
+}
+
+MODULE_AUTHOR("Randy Gobbel/Paul Mackerras");
+MODULE_DESCRIPTION("PowerMac BMAC ethernet driver.");
+MODULE_LICENSE("GPL");
+
+module_init(bmac_init);
+module_exit(bmac_exit);
--- /dev/null
+/*
+ * mace.h - definitions for the registers in the "Big Mac"
+ * Ethernet controller found in PowerMac G3 models.
+ *
+ * Copyright (C) 1998 Randy Gobbel.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+/* The "Big MAC" appears to have some parts in common with the Sun "Happy Meal"
+ * (HME) controller. See sunhme.h
+ */
+
+
+/* register offsets */
+
+/* global status and control */
+#define XIFC 0x000 /* low-level interface control */
+# define TxOutputEnable 0x0001 /* output driver enable */
+# define XIFLoopback 0x0002 /* Loopback-mode XIF enable */
+# define MIILoopback 0x0004 /* Loopback-mode MII enable */
+# define MIILoopbackBits 0x0006
+# define MIIBuffDisable 0x0008 /* MII receive buffer disable */
+# define SQETestEnable 0x0010 /* SQE test enable */
+# define SQETimeWindow 0x03e0 /* SQE time window */
+# define XIFLanceMode 0x0010 /* Lance mode enable */
+# define XIFLanceIPG0 0x03e0 /* Lance mode IPG0 */
+#define TXFIFOCSR 0x100 /* transmit FIFO control */
+# define TxFIFOEnable 0x0001
+#define TXTH 0x110 /* transmit threshold */
+# define TxThreshold 0x0004
+#define RXFIFOCSR 0x120 /* receive FIFO control */
+# define RxFIFOEnable 0x0001
+#define MEMADD 0x130 /* memory address, unknown function */
+#define MEMDATAHI 0x140 /* memory data high, presently unused in driver */
+#define MEMDATALO 0x150 /* memory data low, presently unused in driver */
+#define XCVRIF 0x160 /* transceiver interface control */
+# define COLActiveLow 0x0002
+# define SerialMode 0x0004
+# define ClkBit 0x0008
+# define LinkStatus 0x0100
+#define CHIPID 0x170 /* chip ID */
+#define MIFCSR 0x180 /* ??? */
+#define SROMCSR 0x190 /* SROM control */
+# define ChipSelect 0x0001
+# define Clk 0x0002
+#define TXPNTR 0x1a0 /* transmit pointer */
+#define RXPNTR 0x1b0 /* receive pointer */
+#define STATUS 0x200 /* status--reading this clears it */
+#define INTDISABLE 0x210 /* interrupt enable/disable control */
+/* bits below are the same in both STATUS and INTDISABLE registers */
+# define FrameReceived 0x00000001 /* Received a frame */
+# define RxFrameCntExp 0x00000002 /* Receive frame counter expired */
+# define RxAlignCntExp 0x00000004 /* Align-error counter expired */
+# define RxCRCCntExp 0x00000008 /* CRC-error counter expired */
+# define RxLenCntExp 0x00000010 /* Length-error counter expired */
+# define RxOverFlow 0x00000020 /* Receive FIFO overflow */
+# define RxCodeViolation 0x00000040 /* Code-violation counter expired */
+# define SQETestError 0x00000080 /* Test error in XIF for SQE */
+# define FrameSent 0x00000100 /* Transmitted a frame */
+# define TxUnderrun 0x00000200 /* Transmit FIFO underrun */
+# define TxMaxSizeError 0x00000400 /* Max-packet size error */
+# define TxNormalCollExp 0x00000800 /* Normal-collision counter expired */
+# define TxExcessCollExp 0x00001000 /* Excess-collision counter expired */
+# define TxLateCollExp 0x00002000 /* Late-collision counter expired */
+# define TxNetworkCollExp 0x00004000 /* First-collision counter expired */
+# define TxDeferTimerExp 0x00008000 /* Defer-timer expired */
+# define RxFIFOToHost 0x00010000 /* Data moved from FIFO to host */
+# define RxNoDescriptors 0x00020000 /* No more receive descriptors */
+# define RxDMAError 0x00040000 /* Error during receive DMA */
+# define RxDMALateErr 0x00080000 /* Receive DMA, data late */
+# define RxParityErr 0x00100000 /* Parity error during receive DMA */
+# define RxTagError 0x00200000 /* Tag error during receive DMA */
+# define TxEOPError 0x00400000 /* Tx descriptor did not have EOP set */
+# define MIFIntrEvent 0x00800000 /* MIF is signaling an interrupt */
+# define TxHostToFIFO 0x01000000 /* Data moved from host to FIFO */
+# define TxFIFOAllSent 0x02000000 /* Transmitted all packets in FIFO */
+# define TxDMAError 0x04000000 /* Error during transmit DMA */
+# define TxDMALateError 0x08000000 /* Late error during transmit DMA */
+# define TxParityError 0x10000000 /* Parity error during transmit DMA */
+# define TxTagError 0x20000000 /* Tag error during transmit DMA */
+# define PIOError 0x40000000 /* PIO access got an error */
+# define PIOParityError 0x80000000 /* PIO access got a parity error */
+# define DisableAll 0xffffffff
+# define EnableAll 0x00000000
+/* # define NormalIntEvents ~(FrameReceived | FrameSent | TxUnderrun) */
+# define EnableNormal ~(FrameReceived | FrameSent)
+# define EnableErrors (FrameReceived | FrameSent)
+# define RxErrorMask (RxFrameCntExp | RxAlignCntExp | RxCRCCntExp | \
+ RxLenCntExp | RxOverFlow | RxCodeViolation)
+# define TxErrorMask (TxUnderrun | TxMaxSizeError | TxExcessCollExp | \
+ TxLateCollExp | TxNetworkCollExp | TxDeferTimerExp)
+
+/* transmit control */
+#define TXRST 0x420 /* transmit reset */
+# define TxResetBit 0x0001
+#define TXCFG 0x430 /* transmit configuration control*/
+# define TxMACEnable 0x0001 /* output driver enable */
+# define TxSlowMode 0x0020 /* enable slow mode */
+# define TxIgnoreColl 0x0040 /* ignore transmit collisions */
+# define TxNoFCS 0x0080 /* do not emit FCS */
+# define TxNoBackoff 0x0100 /* no backoff in case of collisions */
+# define TxFullDuplex 0x0200 /* enable full-duplex */
+# define TxNeverGiveUp 0x0400 /* don't give up on transmits */
+#define IPG1 0x440 /* Inter-packet gap 1 */
+#define IPG2 0x450 /* Inter-packet gap 2 */
+#define ALIMIT 0x460 /* Transmit attempt limit */
+#define SLOT 0x470 /* Transmit slot time */
+#define PALEN 0x480 /* Size of transmit preamble */
+#define PAPAT 0x490 /* Pattern for transmit preamble */
+#define TXSFD 0x4a0 /* Transmit frame delimiter */
+#define JAM 0x4b0 /* Jam size */
+#define TXMAX 0x4c0 /* Transmit max pkt size */
+#define TXMIN 0x4d0 /* Transmit min pkt size */
+#define PAREG 0x4e0 /* Count of transmit peak attempts */
+#define DCNT 0x4f0 /* Transmit defer timer */
+#define NCCNT 0x500 /* Transmit normal-collision counter */
+#define NTCNT 0x510 /* Transmit first-collision counter */
+#define EXCNT 0x520 /* Transmit excess-collision counter */
+#define LTCNT 0x530 /* Transmit late-collision counter */
+#define RSEED 0x540 /* Transmit random number seed */
+#define TXSM 0x550 /* Transmit state machine */
+
+/* receive control */
+#define RXRST 0x620 /* receive reset */
+# define RxResetValue 0x0000
+#define RXCFG 0x630 /* receive configuration control */
+# define RxMACEnable 0x0001 /* receiver overall enable */
+# define RxCFGReserved 0x0004
+# define RxPadStripEnab 0x0020 /* enable pad byte stripping */
+# define RxPromiscEnable 0x0040 /* turn on promiscuous mode */
+# define RxNoErrCheck 0x0080 /* disable receive error checking */
+# define RxCRCNoStrip 0x0100 /* disable auto-CRC-stripping */
+# define RxRejectOwnPackets 0x0200 /* don't receive our own packets */
+# define RxGrpPromisck 0x0400 /* enable group promiscuous mode */
+# define RxHashFilterEnable 0x0800 /* enable hash filter */
+# define RxAddrFilterEnable 0x1000 /* enable address filter */
+#define RXMAX 0x640 /* Max receive packet size */
+#define RXMIN 0x650 /* Min receive packet size */
+#define MADD2 0x660 /* our enet address, high part */
+#define MADD1 0x670 /* our enet address, middle part */
+#define MADD0 0x680 /* our enet address, low part */
+#define FRCNT 0x690 /* receive frame counter */
+#define LECNT 0x6a0 /* Receive excess length error counter */
+#define AECNT 0x6b0 /* Receive misaligned error counter */
+#define FECNT 0x6c0 /* Receive CRC error counter */
+#define RXSM 0x6d0 /* Receive state machine */
+#define RXCV 0x6e0 /* Receive code violation */
+
+#define BHASH3 0x700 /* multicast hash register */
+#define BHASH2 0x710 /* multicast hash register */
+#define BHASH1 0x720 /* multicast hash register */
+#define BHASH0 0x730 /* multicast hash register */
+
+#define AFR2 0x740 /* address filtering setup? */
+#define AFR1 0x750 /* address filtering setup? */
+#define AFR0 0x760 /* address filtering setup? */
+#define AFCR 0x770 /* address filter compare register? */
+# define EnableAllCompares 0x0fff
+
+/* bits in XIFC */
--- /dev/null
+/* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
+ * driver for linux.
+ */
+
+/*
+ Written 1996 by Russell Nelson, with reference to skeleton.c
+ written 1993-1994 by Donald Becker.
+
+ This software may be used and distributed according to the terms
+ of the GNU General Public License, incorporated herein by reference.
+
+ The author may be reached at nelson@crynwr.com, Crynwr
+ Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
+
+ Changelog:
+
+ Mike Cruse : mcruse@cti-ltd.com
+ : Changes for Linux 2.0 compatibility.
+ : Added dev_id parameter in net_interrupt(),
+ : request_irq() and free_irq(). Just NULL for now.
+
+ Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
+ : in net_open() and net_close() so kerneld would know
+ : that the module is in use and wouldn't eject the
+ : driver prematurely.
+
+ Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
+ : as an example. Disabled autoprobing in init_module(),
+ : not a good thing to do to other devices while Linux
+ : is running from all accounts.
+
+ Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
+
+ Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
+ : email: ethernet@crystal.cirrus.com
+
+ Alan Cox : Removed 1.2 support, added 2.1 extra counters.
+
+ Andrew Morton : Kernel 2.3.48
+ : Handle kmalloc() failures
+ : Other resource allocation fixes
+ : Add SMP locks
+ : Integrate Russ Nelson's ALLOW_DMA functionality back in.
+ : If ALLOW_DMA is true, make DMA runtime selectable
+ : Folded in changes from Cirrus (Melody Lee
+ : <klee@crystal.cirrus.com>)
+ : Don't call netif_wake_queue() in net_send_packet()
+ : Fixed an out-of-mem bug in dma_rx()
+ : Updated Documentation/networking/cs89x0.txt
+
+ Andrew Morton : Kernel 2.3.99-pre1
+ : Use skb_reserve to longword align IP header (two places)
+ : Remove a delay loop from dma_rx()
+ : Replace '100' with HZ
+ : Clean up a couple of skb API abuses
+ : Added 'cs89x0_dma=N' kernel boot option
+ : Correctly initialise lp->lock in non-module compile
+
+ Andrew Morton : Kernel 2.3.99-pre4-1
+ : MOD_INC/DEC race fix (see
+ : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
+
+ Andrew Morton : Kernel 2.4.0-test7-pre2
+ : Enhanced EEPROM support to cover more devices,
+ : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
+ : (Jason Gunthorpe <jgg@ualberta.ca>)
+
+ Andrew Morton : Kernel 2.4.0-test11-pre4
+ : Use dev->name in request_*() (Andrey Panin)
+ : Fix an error-path memleak in init_module()
+ : Preserve return value from request_irq()
+ : Fix type of `media' module parm (Keith Owens)
+ : Use SET_MODULE_OWNER()
+ : Tidied up strange request_irq() abuse in net_open().
+
+ Andrew Morton : Kernel 2.4.3-pre1
+ : Request correct number of pages for DMA (Hugh Dickens)
+ : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
+ : because unregister_netdev() calls get_stats.
+ : Make `version[]' __initdata
+ : Uninlined the read/write reg/word functions.
+
+ Oskar Schirmer : oskar@scara.com
+ : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
+
+ Deepak Saxena : dsaxena@plexity.net
+ : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
+
+ Dmitry Pervushin : dpervushin@ru.mvista.com
+ : PNX010X platform support
+
+ Deepak Saxena : dsaxena@plexity.net
+ : Intel IXDP2351 platform support
+
+ Dmitry Pervushin : dpervushin@ru.mvista.com
+ : PNX010X platform support
+
+ Domenico Andreoli : cavokz@gmail.com
+ : QQ2440 platform support
+
+*/
+
+/* Always include 'config.h' first in case the user wants to turn on
+ or override something. */
+#include <linux/module.h>
+
+/*
+ * Set this to zero to disable DMA code
+ *
+ * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
+ * module options so we don't break any startup scripts.
+ */
+#ifndef CONFIG_ISA_DMA_API
+#define ALLOW_DMA 0
+#else
+#define ALLOW_DMA 1
+#endif
+
+/*
+ * Set this to zero to remove all the debug statements via
+ * dead code elimination
+ */
+#define DEBUGGING 1
+
+/*
+ Sources:
+
+ Crynwr packet driver epktisa.
+
+ Crystal Semiconductor data sheets.
+
+*/
+
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/gfp.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#if ALLOW_DMA
+#include <asm/dma.h>
+#endif
+
+#include "cs89x0.h"
+
+static char version[] __initdata =
+"cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n";
+
+#define DRV_NAME "cs89x0"
+
+/* First, a few definitions that the brave might change.
+ A zero-terminated list of I/O addresses to be probed. Some special flags..
+ Addr & 1 = Read back the address port, look for signature and reset
+ the page window before probing
+ Addr & 3 = Reset the page window and probe
+ The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
+ but it is possible that a Cirrus board could be plugged into the ISA
+ slots. */
+/* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
+ them to system IRQ numbers. This mapping is card specific and is set to
+ the configuration of the Cirrus Eval board for this chip. */
+#if defined(CONFIG_MACH_IXDP2351)
+static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
+static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
+#elif defined(CONFIG_ARCH_IXDP2X01)
+static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
+static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
+#elif defined(CONFIG_MACH_QQ2440)
+#include <mach/qq2440.h>
+static unsigned int netcard_portlist[] __used __initdata = { QQ2440_CS8900_VIRT_BASE + 0x300, 0 };
+static unsigned int cs8900_irq_map[] = { QQ2440_CS8900_IRQ, 0, 0, 0 };
+#elif defined(CONFIG_MACH_MX31ADS)
+#include <mach/board-mx31ads.h>
+static unsigned int netcard_portlist[] __used __initdata = {
+ PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
+};
+static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
+#else
+static unsigned int netcard_portlist[] __used __initdata =
+ { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
+static unsigned int cs8900_irq_map[] = {10,11,12,5};
+#endif
+
+#if DEBUGGING
+static unsigned int net_debug = DEBUGGING;
+#else
+#define net_debug 0 /* gcc will remove all the debug code for us */
+#endif
+
+/* The number of low I/O ports used by the ethercard. */
+#define NETCARD_IO_EXTENT 16
+
+/* we allow the user to override various values normally set in the EEPROM */
+#define FORCE_RJ45 0x0001 /* pick one of these three */
+#define FORCE_AUI 0x0002
+#define FORCE_BNC 0x0004
+
+#define FORCE_AUTO 0x0010 /* pick one of these three */
+#define FORCE_HALF 0x0020
+#define FORCE_FULL 0x0030
+
+/* Information that need to be kept for each board. */
+struct net_local {
+ int chip_type; /* one of: CS8900, CS8920, CS8920M */
+ char chip_revision; /* revision letter of the chip ('A'...) */
+ int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
+ int auto_neg_cnf; /* auto-negotiation word from EEPROM */
+ int adapter_cnf; /* adapter configuration from EEPROM */
+ int isa_config; /* ISA configuration from EEPROM */
+ int irq_map; /* IRQ map from EEPROM */
+ int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
+ int curr_rx_cfg; /* a copy of PP_RxCFG */
+ int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
+ int send_underrun; /* keep track of how many underruns in a row we get */
+ int force; /* force various values; see FORCE* above. */
+ spinlock_t lock;
+#if ALLOW_DMA
+ int use_dma; /* Flag: we're using dma */
+ int dma; /* DMA channel */
+ int dmasize; /* 16 or 64 */
+ unsigned char *dma_buff; /* points to the beginning of the buffer */
+ unsigned char *end_dma_buff; /* points to the end of the buffer */
+ unsigned char *rx_dma_ptr; /* points to the next packet */
+#endif
+};
+
+/* Index to functions, as function prototypes. */
+
+static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
+static int net_open(struct net_device *dev);
+static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t net_interrupt(int irq, void *dev_id);
+static void set_multicast_list(struct net_device *dev);
+static void net_timeout(struct net_device *dev);
+static void net_rx(struct net_device *dev);
+static int net_close(struct net_device *dev);
+static struct net_device_stats *net_get_stats(struct net_device *dev);
+static void reset_chip(struct net_device *dev);
+static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
+static int get_eeprom_cksum(int off, int len, int *buffer);
+static int set_mac_address(struct net_device *dev, void *addr);
+static void count_rx_errors(int status, struct net_device *dev);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void net_poll_controller(struct net_device *dev);
+#endif
+#if ALLOW_DMA
+static void get_dma_channel(struct net_device *dev);
+static void release_dma_buff(struct net_local *lp);
+#endif
+
+/* Example routines you must write ;->. */
+#define tx_done(dev) 1
+
+/*
+ * Permit 'cs89x0_dma=N' in the kernel boot environment
+ */
+#if !defined(MODULE) && (ALLOW_DMA != 0)
+static int g_cs89x0_dma;
+
+static int __init dma_fn(char *str)
+{
+ g_cs89x0_dma = simple_strtol(str,NULL,0);
+ return 1;
+}
+
+__setup("cs89x0_dma=", dma_fn);
+#endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
+
+#ifndef MODULE
+static int g_cs89x0_media__force;
+
+static int __init media_fn(char *str)
+{
+ if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
+ else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
+ else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
+ return 1;
+}
+
+__setup("cs89x0_media=", media_fn);
+
+
+/* Check for a network adaptor of this type, and return '0' iff one exists.
+ If dev->base_addr == 0, probe all likely locations.
+ If dev->base_addr == 1, always return failure.
+ If dev->base_addr == 2, allocate space for the device and return success
+ (detachable devices only).
+ Return 0 on success.
+ */
+
+struct net_device * __init cs89x0_probe(int unit)
+{
+ struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
+ unsigned *port;
+ int err = 0;
+ int irq;
+ int io;
+
+ if (!dev)
+ return ERR_PTR(-ENODEV);
+
+ sprintf(dev->name, "eth%d", unit);
+ netdev_boot_setup_check(dev);
+ io = dev->base_addr;
+ irq = dev->irq;
+
+ if (net_debug)
+ printk("cs89x0:cs89x0_probe(0x%x)\n", io);
+
+ if (io > 0x1ff) { /* Check a single specified location. */
+ err = cs89x0_probe1(dev, io, 0);
+ } else if (io != 0) { /* Don't probe at all. */
+ err = -ENXIO;
+ } else {
+ for (port = netcard_portlist; *port; port++) {
+ if (cs89x0_probe1(dev, *port, 0) == 0)
+ break;
+ dev->irq = irq;
+ }
+ if (!*port)
+ err = -ENODEV;
+ }
+ if (err)
+ goto out;
+ return dev;
+out:
+ free_netdev(dev);
+ printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
+ return ERR_PTR(err);
+}
+#endif
+
+#if defined(CONFIG_MACH_IXDP2351)
+static u16
+readword(unsigned long base_addr, int portno)
+{
+ return __raw_readw(base_addr + (portno << 1));
+}
+
+static void
+writeword(unsigned long base_addr, int portno, u16 value)
+{
+ __raw_writew(value, base_addr + (portno << 1));
+}
+#elif defined(CONFIG_ARCH_IXDP2X01)
+static u16
+readword(unsigned long base_addr, int portno)
+{
+ return __raw_readl(base_addr + (portno << 1));
+}
+
+static void
+writeword(unsigned long base_addr, int portno, u16 value)
+{
+ __raw_writel(value, base_addr + (portno << 1));
+}
+#else
+static u16
+readword(unsigned long base_addr, int portno)
+{
+ return inw(base_addr + portno);
+}
+
+static void
+writeword(unsigned long base_addr, int portno, u16 value)
+{
+ outw(value, base_addr + portno);
+}
+#endif
+
+static void
+readwords(unsigned long base_addr, int portno, void *buf, int length)
+{
+ u8 *buf8 = (u8 *)buf;
+
+ do {
+ u16 tmp16;
+
+ tmp16 = readword(base_addr, portno);
+ *buf8++ = (u8)tmp16;
+ *buf8++ = (u8)(tmp16 >> 8);
+ } while (--length);
+}
+
+static void
+writewords(unsigned long base_addr, int portno, void *buf, int length)
+{
+ u8 *buf8 = (u8 *)buf;
+
+ do {
+ u16 tmp16;
+
+ tmp16 = *buf8++;
+ tmp16 |= (*buf8++) << 8;
+ writeword(base_addr, portno, tmp16);
+ } while (--length);
+}
+
+static u16
+readreg(struct net_device *dev, u16 regno)
+{
+ writeword(dev->base_addr, ADD_PORT, regno);
+ return readword(dev->base_addr, DATA_PORT);
+}
+
+static void
+writereg(struct net_device *dev, u16 regno, u16 value)
+{
+ writeword(dev->base_addr, ADD_PORT, regno);
+ writeword(dev->base_addr, DATA_PORT, value);
+}
+
+static int __init
+wait_eeprom_ready(struct net_device *dev)
+{
+ int timeout = jiffies;
+ /* check to see if the EEPROM is ready, a timeout is used -
+ just in case EEPROM is ready when SI_BUSY in the
+ PP_SelfST is clear */
+ while(readreg(dev, PP_SelfST) & SI_BUSY)
+ if (jiffies - timeout >= 40)
+ return -1;
+ return 0;
+}
+
+static int __init
+get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
+{
+ int i;
+
+ if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
+ for (i = 0; i < len; i++) {
+ if (wait_eeprom_ready(dev) < 0) return -1;
+ /* Now send the EEPROM read command and EEPROM location to read */
+ writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
+ if (wait_eeprom_ready(dev) < 0) return -1;
+ buffer[i] = readreg(dev, PP_EEData);
+ if (net_debug > 3) printk("%04x ", buffer[i]);
+ }
+ if (net_debug > 3) printk("\n");
+ return 0;
+}
+
+static int __init
+get_eeprom_cksum(int off, int len, int *buffer)
+{
+ int i, cksum;
+
+ cksum = 0;
+ for (i = 0; i < len; i++)
+ cksum += buffer[i];
+ cksum &= 0xffff;
+ if (cksum == 0)
+ return 0;
+ return -1;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void net_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ net_interrupt(dev->irq, dev);
+ enable_irq(dev->irq);
+}
+#endif
+
+static const struct net_device_ops net_ops = {
+ .ndo_open = net_open,
+ .ndo_stop = net_close,
+ .ndo_tx_timeout = net_timeout,
+ .ndo_start_xmit = net_send_packet,
+ .ndo_get_stats = net_get_stats,
+ .ndo_set_multicast_list = set_multicast_list,
+ .ndo_set_mac_address = set_mac_address,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = net_poll_controller,
+#endif
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+/* This is the real probe routine. Linux has a history of friendly device
+ probes on the ISA bus. A good device probes avoids doing writes, and
+ verifies that the correct device exists and functions.
+ Return 0 on success.
+ */
+
+static int __init
+cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
+{
+ struct net_local *lp = netdev_priv(dev);
+ static unsigned version_printed;
+ int i;
+ int tmp;
+ unsigned rev_type = 0;
+ int eeprom_buff[CHKSUM_LEN];
+ int retval;
+
+ /* Initialize the device structure. */
+ if (!modular) {
+ memset(lp, 0, sizeof(*lp));
+ spin_lock_init(&lp->lock);
+#ifndef MODULE
+#if ALLOW_DMA
+ if (g_cs89x0_dma) {
+ lp->use_dma = 1;
+ lp->dma = g_cs89x0_dma;
+ lp->dmasize = 16; /* Could make this an option... */
+ }
+#endif
+ lp->force = g_cs89x0_media__force;
+#endif
+
+#if defined(CONFIG_MACH_QQ2440)
+ lp->force |= FORCE_RJ45 | FORCE_FULL;
+#endif
+ }
+
+ /* Grab the region so we can find another board if autoIRQ fails. */
+ /* WTF is going on here? */
+ if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
+ printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
+ DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
+ retval = -EBUSY;
+ goto out1;
+ }
+
+ /* if they give us an odd I/O address, then do ONE write to
+ the address port, to get it back to address zero, where we
+ expect to find the EISA signature word. An IO with a base of 0x3
+ will skip the test for the ADD_PORT. */
+ if (ioaddr & 1) {
+ if (net_debug > 1)
+ printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
+ if ((ioaddr & 2) != 2)
+ if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
+ printk(KERN_ERR "%s: bad signature 0x%x\n",
+ dev->name, readword(ioaddr & ~3, ADD_PORT));
+ retval = -ENODEV;
+ goto out2;
+ }
+ }
+
+ ioaddr &= ~3;
+ printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
+ ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
+ writeword(ioaddr, ADD_PORT, PP_ChipID);
+
+ tmp = readword(ioaddr, DATA_PORT);
+ if (tmp != CHIP_EISA_ID_SIG) {
+ printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
+ CHIP_EISA_ID_SIG_STR "\n",
+ dev->name, ioaddr, DATA_PORT, tmp);
+ retval = -ENODEV;
+ goto out2;
+ }
+
+ /* Fill in the 'dev' fields. */
+ dev->base_addr = ioaddr;
+
+ /* get the chip type */
+ rev_type = readreg(dev, PRODUCT_ID_ADD);
+ lp->chip_type = rev_type &~ REVISON_BITS;
+ lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
+
+ /* Check the chip type and revision in order to set the correct send command
+ CS8920 revision C and CS8900 revision F can use the faster send. */
+ lp->send_cmd = TX_AFTER_381;
+ if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
+ lp->send_cmd = TX_NOW;
+ if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
+ lp->send_cmd = TX_NOW;
+
+ if (net_debug && version_printed++ == 0)
+ printk(version);
+
+ printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
+ dev->name,
+ lp->chip_type==CS8900?'0':'2',
+ lp->chip_type==CS8920M?"M":"",
+ lp->chip_revision,
+ dev->base_addr);
+
+ reset_chip(dev);
+
+ /* Here we read the current configuration of the chip. If there
+ is no Extended EEPROM then the idea is to not disturb the chip
+ configuration, it should have been correctly setup by automatic
+ EEPROM read on reset. So, if the chip says it read the EEPROM
+ the driver will always do *something* instead of complain that
+ adapter_cnf is 0. */
+
+
+ if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
+ (EEPROM_OK|EEPROM_PRESENT)) {
+ /* Load the MAC. */
+ for (i=0; i < ETH_ALEN/2; i++) {
+ unsigned int Addr;
+ Addr = readreg(dev, PP_IA+i*2);
+ dev->dev_addr[i*2] = Addr & 0xFF;
+ dev->dev_addr[i*2+1] = Addr >> 8;
+ }
+
+ /* Load the Adapter Configuration.
+ Note: Barring any more specific information from some
+ other source (ie EEPROM+Schematics), we would not know
+ how to operate a 10Base2 interface on the AUI port.
+ However, since we do read the status of HCB1 and use
+ settings that always result in calls to control_dc_dc(dev,0)
+ a BNC interface should work if the enable pin
+ (dc/dc converter) is on HCB1. It will be called AUI
+ however. */
+
+ lp->adapter_cnf = 0;
+ i = readreg(dev, PP_LineCTL);
+ /* Preserve the setting of the HCB1 pin. */
+ if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
+ lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
+ /* Save the sqelch bit */
+ if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
+ lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
+ /* Check if the card is in 10Base-t only mode */
+ if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
+ lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
+ /* Check if the card is in AUI only mode */
+ if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
+ lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
+ /* Check if the card is in Auto mode. */
+ if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
+ lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
+ A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
+
+ if (net_debug > 1)
+ printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
+ dev->name, i, lp->adapter_cnf);
+
+ /* IRQ. Other chips already probe, see below. */
+ if (lp->chip_type == CS8900)
+ lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
+
+ printk( "[Cirrus EEPROM] ");
+ }
+
+ printk("\n");
+
+ /* First check to see if an EEPROM is attached. */
+
+ if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
+ printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
+ else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
+ printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
+ } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
+ /* Check if the chip was able to read its own configuration starting
+ at 0 in the EEPROM*/
+ if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
+ (EEPROM_OK|EEPROM_PRESENT))
+ printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
+
+ } else {
+ /* This reads an extended EEPROM that is not documented
+ in the CS8900 datasheet. */
+
+ /* get transmission control word but keep the autonegotiation bits */
+ if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
+ /* Store adapter configuration */
+ if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
+ /* Store ISA configuration */
+ lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
+ dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
+
+ /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
+ /* store the initial memory base address */
+ for (i = 0; i < ETH_ALEN/2; i++) {
+ dev->dev_addr[i*2] = eeprom_buff[i];
+ dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
+ }
+ if (net_debug > 1)
+ printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
+ dev->name, lp->adapter_cnf);
+ }
+
+ /* allow them to force multiple transceivers. If they force multiple, autosense */
+ {
+ int count = 0;
+ if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
+ if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
+ if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
+ if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
+ else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
+ else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
+ else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
+ }
+
+ if (net_debug > 1)
+ printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
+ dev->name, lp->force, lp->adapter_cnf);
+
+ /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
+
+ /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
+
+ /* FIXME: we don't set the Ethernet address on the command line. Use
+ ifconfig IFACE hw ether AABBCCDDEEFF */
+
+ printk(KERN_INFO "cs89x0 media %s%s%s",
+ (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
+ (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
+ (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
+
+ lp->irq_map = 0xffff;
+
+ /* If this is a CS8900 then no pnp soft */
+ if (lp->chip_type != CS8900 &&
+ /* Check if the ISA IRQ has been set */
+ (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
+ (i != 0 && i < CS8920_NO_INTS))) {
+ if (!dev->irq)
+ dev->irq = i;
+ } else {
+ i = lp->isa_config & INT_NO_MASK;
+ if (lp->chip_type == CS8900) {
+#ifdef CONFIG_CS89x0_NONISA_IRQ
+ i = cs8900_irq_map[0];
+#else
+ /* Translate the IRQ using the IRQ mapping table. */
+ if (i >= ARRAY_SIZE(cs8900_irq_map))
+ printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
+ else
+ i = cs8900_irq_map[i];
+
+ lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
+ } else {
+ int irq_map_buff[IRQ_MAP_LEN/2];
+
+ if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
+ IRQ_MAP_LEN/2,
+ irq_map_buff) >= 0) {
+ if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
+ lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
+ }
+#endif
+ }
+ if (!dev->irq)
+ dev->irq = i;
+ }
+
+ printk(" IRQ %d", dev->irq);
+
+#if ALLOW_DMA
+ if (lp->use_dma) {
+ get_dma_channel(dev);
+ printk(", DMA %d", dev->dma);
+ }
+ else
+#endif
+ {
+ printk(", programmed I/O");
+ }
+
+ /* print the ethernet address. */
+ printk(", MAC %pM", dev->dev_addr);
+
+ dev->netdev_ops = &net_ops;
+ dev->watchdog_timeo = HZ;
+
+ printk("\n");
+ if (net_debug)
+ printk("cs89x0_probe1() successful\n");
+
+ retval = register_netdev(dev);
+ if (retval)
+ goto out3;
+ return 0;
+out3:
+ writeword(dev->base_addr, ADD_PORT, PP_ChipID);
+out2:
+ release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
+out1:
+ return retval;
+}
+
+
+/*********************************
+ * This page contains DMA routines
+**********************************/
+
+#if ALLOW_DMA
+
+#define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
+
+static void
+get_dma_channel(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+
+ if (lp->dma) {
+ dev->dma = lp->dma;
+ lp->isa_config |= ISA_RxDMA;
+ } else {
+ if ((lp->isa_config & ANY_ISA_DMA) == 0)
+ return;
+ dev->dma = lp->isa_config & DMA_NO_MASK;
+ if (lp->chip_type == CS8900)
+ dev->dma += 5;
+ if (dev->dma < 5 || dev->dma > 7) {
+ lp->isa_config &= ~ANY_ISA_DMA;
+ return;
+ }
+ }
+}
+
+static void
+write_dma(struct net_device *dev, int chip_type, int dma)
+{
+ struct net_local *lp = netdev_priv(dev);
+ if ((lp->isa_config & ANY_ISA_DMA) == 0)
+ return;
+ if (chip_type == CS8900) {
+ writereg(dev, PP_CS8900_ISADMA, dma-5);
+ } else {
+ writereg(dev, PP_CS8920_ISADMA, dma);
+ }
+}
+
+static void
+set_dma_cfg(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+
+ if (lp->use_dma) {
+ if ((lp->isa_config & ANY_ISA_DMA) == 0) {
+ if (net_debug > 3)
+ printk("set_dma_cfg(): no DMA\n");
+ return;
+ }
+ if (lp->isa_config & ISA_RxDMA) {
+ lp->curr_rx_cfg |= RX_DMA_ONLY;
+ if (net_debug > 3)
+ printk("set_dma_cfg(): RX_DMA_ONLY\n");
+ } else {
+ lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
+ if (net_debug > 3)
+ printk("set_dma_cfg(): AUTO_RX_DMA\n");
+ }
+ }
+}
+
+static int
+dma_bufcfg(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ if (lp->use_dma)
+ return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
+ else
+ return 0;
+}
+
+static int
+dma_busctl(struct net_device *dev)
+{
+ int retval = 0;
+ struct net_local *lp = netdev_priv(dev);
+ if (lp->use_dma) {
+ if (lp->isa_config & ANY_ISA_DMA)
+ retval |= RESET_RX_DMA; /* Reset the DMA pointer */
+ if (lp->isa_config & DMA_BURST)
+ retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
+ if (lp->dmasize == 64)
+ retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
+ retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
+ }
+ return retval;
+}
+
+static void
+dma_rx(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ struct sk_buff *skb;
+ int status, length;
+ unsigned char *bp = lp->rx_dma_ptr;
+
+ status = bp[0] + (bp[1]<<8);
+ length = bp[2] + (bp[3]<<8);
+ bp += 4;
+ if (net_debug > 5) {
+ printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
+ dev->name, (unsigned long)bp, status, length);
+ }
+ if ((status & RX_OK) == 0) {
+ count_rx_errors(status, dev);
+ goto skip_this_frame;
+ }
+
+ /* Malloc up new buffer. */
+ skb = dev_alloc_skb(length + 2);
+ if (skb == NULL) {
+ if (net_debug) /* I don't think we want to do this to a stressed system */
+ printk("%s: Memory squeeze, dropping packet.\n", dev->name);
+ dev->stats.rx_dropped++;
+
+ /* AKPM: advance bp to the next frame */
+skip_this_frame:
+ bp += (length + 3) & ~3;
+ if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
+ lp->rx_dma_ptr = bp;
+ return;
+ }
+ skb_reserve(skb, 2); /* longword align L3 header */
+
+ if (bp + length > lp->end_dma_buff) {
+ int semi_cnt = lp->end_dma_buff - bp;
+ memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
+ memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
+ length - semi_cnt);
+ } else {
+ memcpy(skb_put(skb,length), bp, length);
+ }
+ bp += (length + 3) & ~3;
+ if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
+ lp->rx_dma_ptr = bp;
+
+ if (net_debug > 3) {
+ printk( "%s: received %d byte DMA packet of type %x\n",
+ dev->name, length,
+ (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
+ }
+ skb->protocol=eth_type_trans(skb,dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += length;
+}
+
+#endif /* ALLOW_DMA */
+
+static void __init reset_chip(struct net_device *dev)
+{
+#if !defined(CONFIG_MACH_MX31ADS)
+#if !defined(CS89x0_NONISA_IRQ)
+ struct net_local *lp = netdev_priv(dev);
+ int ioaddr = dev->base_addr;
+#endif /* CS89x0_NONISA_IRQ */
+ int reset_start_time;
+
+ writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
+
+ /* wait 30 ms */
+ msleep(30);
+
+#if !defined(CS89x0_NONISA_IRQ)
+ if (lp->chip_type != CS8900) {
+ /* Hardware problem requires PNP registers to be reconfigured after a reset */
+ writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
+ outb(dev->irq, ioaddr + DATA_PORT);
+ outb(0, ioaddr + DATA_PORT + 1);
+
+ writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
+ outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
+ outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
+ }
+#endif /* CS89x0_NONISA_IRQ */
+
+ /* Wait until the chip is reset */
+ reset_start_time = jiffies;
+ while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
+ ;
+#endif /* !CONFIG_MACH_MX31ADS */
+}
+
+
+static void
+control_dc_dc(struct net_device *dev, int on_not_off)
+{
+ struct net_local *lp = netdev_priv(dev);
+ unsigned int selfcontrol;
+ int timenow = jiffies;
+ /* control the DC to DC convertor in the SelfControl register.
+ Note: This is hooked up to a general purpose pin, might not
+ always be a DC to DC convertor. */
+
+ selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
+ if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
+ selfcontrol |= HCB1;
+ else
+ selfcontrol &= ~HCB1;
+ writereg(dev, PP_SelfCTL, selfcontrol);
+
+ /* Wait for the DC/DC converter to power up - 500ms */
+ while (jiffies - timenow < HZ)
+ ;
+}
+
+#define DETECTED_NONE 0
+#define DETECTED_RJ45H 1
+#define DETECTED_RJ45F 2
+#define DETECTED_AUI 3
+#define DETECTED_BNC 4
+
+static int
+detect_tp(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int timenow = jiffies;
+ int fdx;
+
+ if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
+
+ /* If connected to another full duplex capable 10-Base-T card the link pulses
+ seem to be lost when the auto detect bit in the LineCTL is set.
+ To overcome this the auto detect bit will be cleared whilst testing the
+ 10-Base-T interface. This would not be necessary for the sparrow chip but
+ is simpler to do it anyway. */
+ writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
+ control_dc_dc(dev, 0);
+
+ /* Delay for the hardware to work out if the TP cable is present - 150ms */
+ for (timenow = jiffies; jiffies - timenow < 15; )
+ ;
+ if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
+ return DETECTED_NONE;
+
+ if (lp->chip_type == CS8900) {
+ switch (lp->force & 0xf0) {
+#if 0
+ case FORCE_AUTO:
+ printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
+ return DETECTED_NONE;
+#endif
+ /* CS8900 doesn't support AUTO, change to HALF*/
+ case FORCE_AUTO:
+ lp->force &= ~FORCE_AUTO;
+ lp->force |= FORCE_HALF;
+ break;
+ case FORCE_HALF:
+ break;
+ case FORCE_FULL:
+ writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
+ break;
+ }
+ fdx = readreg(dev, PP_TestCTL) & FDX_8900;
+ } else {
+ switch (lp->force & 0xf0) {
+ case FORCE_AUTO:
+ lp->auto_neg_cnf = AUTO_NEG_ENABLE;
+ break;
+ case FORCE_HALF:
+ lp->auto_neg_cnf = 0;
+ break;
+ case FORCE_FULL:
+ lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
+ break;
+ }
+
+ writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
+
+ if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
+ printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
+ while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
+ if (jiffies - timenow > 4000) {
+ printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
+ break;
+ }
+ }
+ }
+ fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
+ }
+ if (fdx)
+ return DETECTED_RJ45F;
+ else
+ return DETECTED_RJ45H;
+}
+
+/* send a test packet - return true if carrier bits are ok */
+static int
+send_test_pkt(struct net_device *dev)
+{
+ char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
+ 0, 46, /* A 46 in network order */
+ 0, 0, /* DSAP=0 & SSAP=0 fields */
+ 0xf3, 0 /* Control (Test Req + P bit set) */ };
+ long timenow = jiffies;
+
+ writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
+
+ memcpy(test_packet, dev->dev_addr, ETH_ALEN);
+ memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
+
+ writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
+ writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
+
+ /* Test to see if the chip has allocated memory for the packet */
+ while (jiffies - timenow < 5)
+ if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
+ break;
+ if (jiffies - timenow >= 5)
+ return 0; /* this shouldn't happen */
+
+ /* Write the contents of the packet */
+ writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
+
+ if (net_debug > 1) printk("Sending test packet ");
+ /* wait a couple of jiffies for packet to be received */
+ for (timenow = jiffies; jiffies - timenow < 3; )
+ ;
+ if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
+ if (net_debug > 1) printk("succeeded\n");
+ return 1;
+ }
+ if (net_debug > 1) printk("failed\n");
+ return 0;
+}
+
+
+static int
+detect_aui(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+
+ if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
+ control_dc_dc(dev, 0);
+
+ writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
+
+ if (send_test_pkt(dev))
+ return DETECTED_AUI;
+ else
+ return DETECTED_NONE;
+}
+
+static int
+detect_bnc(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+
+ if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
+ control_dc_dc(dev, 1);
+
+ writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
+
+ if (send_test_pkt(dev))
+ return DETECTED_BNC;
+ else
+ return DETECTED_NONE;
+}
+
+
+static void
+write_irq(struct net_device *dev, int chip_type, int irq)
+{
+ int i;
+
+ if (chip_type == CS8900) {
+ /* Search the mapping table for the corresponding IRQ pin. */
+ for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
+ if (cs8900_irq_map[i] == irq)
+ break;
+ /* Not found */
+ if (i == ARRAY_SIZE(cs8900_irq_map))
+ i = 3;
+ writereg(dev, PP_CS8900_ISAINT, i);
+ } else {
+ writereg(dev, PP_CS8920_ISAINT, irq);
+ }
+}
+
+/* Open/initialize the board. This is called (in the current kernel)
+ sometime after booting when the 'ifconfig' program is run.
+
+ This routine should set everything up anew at each open, even
+ registers that "should" only need to be set once at boot, so that
+ there is non-reboot way to recover if something goes wrong.
+ */
+
+/* AKPM: do we need to do any locking here? */
+
+static int
+net_open(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int result = 0;
+ int i;
+ int ret;
+
+ if (dev->irq < 2) {
+ /* Allow interrupts to be generated by the chip */
+/* Cirrus' release had this: */
+#if 0
+ writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
+#endif
+/* And 2.3.47 had this: */
+ writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
+
+ for (i = 2; i < CS8920_NO_INTS; i++) {
+ if ((1 << i) & lp->irq_map) {
+ if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
+ dev->irq = i;
+ write_irq(dev, lp->chip_type, i);
+ /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
+ break;
+ }
+ }
+ }
+
+ if (i >= CS8920_NO_INTS) {
+ writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
+ printk(KERN_ERR "cs89x0: can't get an interrupt\n");
+ ret = -EAGAIN;
+ goto bad_out;
+ }
+ }
+ else
+ {
+#ifndef CONFIG_CS89x0_NONISA_IRQ
+ if (((1 << dev->irq) & lp->irq_map) == 0) {
+ printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
+ dev->name, dev->irq, lp->irq_map);
+ ret = -EAGAIN;
+ goto bad_out;
+ }
+#endif
+/* FIXME: Cirrus' release had this: */
+ writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
+/* And 2.3.47 had this: */
+#if 0
+ writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
+#endif
+ write_irq(dev, lp->chip_type, dev->irq);
+ ret = request_irq(dev->irq, net_interrupt, 0, dev->name, dev);
+ if (ret) {
+ printk(KERN_ERR "cs89x0: request_irq(%d) failed\n", dev->irq);
+ goto bad_out;
+ }
+ }
+
+#if ALLOW_DMA
+ if (lp->use_dma) {
+ if (lp->isa_config & ANY_ISA_DMA) {
+ unsigned long flags;
+ lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
+ get_order(lp->dmasize * 1024));
+
+ if (!lp->dma_buff) {
+ printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
+ goto release_irq;
+ }
+ if (net_debug > 1) {
+ printk( "%s: dma %lx %lx\n",
+ dev->name,
+ (unsigned long)lp->dma_buff,
+ (unsigned long)isa_virt_to_bus(lp->dma_buff));
+ }
+ if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
+ !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
+ printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
+ goto release_irq;
+ }
+ memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
+ if (request_dma(dev->dma, dev->name)) {
+ printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
+ goto release_irq;
+ }
+ write_dma(dev, lp->chip_type, dev->dma);
+ lp->rx_dma_ptr = lp->dma_buff;
+ lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
+ spin_lock_irqsave(&lp->lock, flags);
+ disable_dma(dev->dma);
+ clear_dma_ff(dev->dma);
+ set_dma_mode(dev->dma, DMA_RX_MODE); /* auto_init as well */
+ set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
+ set_dma_count(dev->dma, lp->dmasize*1024);
+ enable_dma(dev->dma);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ }
+ }
+#endif /* ALLOW_DMA */
+
+ /* set the Ethernet address */
+ for (i=0; i < ETH_ALEN/2; i++)
+ writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
+
+ /* while we're testing the interface, leave interrupts disabled */
+ writereg(dev, PP_BusCTL, MEMORY_ON);
+
+ /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
+ if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
+ lp->linectl = LOW_RX_SQUELCH;
+ else
+ lp->linectl = 0;
+
+ /* check to make sure that they have the "right" hardware available */
+ switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
+ case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
+ case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
+ case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
+ default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
+ }
+ if (!result) {
+ printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
+release_dma:
+#if ALLOW_DMA
+ free_dma(dev->dma);
+release_irq:
+ release_dma_buff(lp);
+#endif
+ writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
+ free_irq(dev->irq, dev);
+ ret = -EAGAIN;
+ goto bad_out;
+ }
+
+ /* set the hardware to the configured choice */
+ switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
+ case A_CNF_MEDIA_10B_T:
+ result = detect_tp(dev);
+ if (result==DETECTED_NONE) {
+ printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
+ if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
+ result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
+ }
+ break;
+ case A_CNF_MEDIA_AUI:
+ result = detect_aui(dev);
+ if (result==DETECTED_NONE) {
+ printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
+ if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
+ result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
+ }
+ break;
+ case A_CNF_MEDIA_10B_2:
+ result = detect_bnc(dev);
+ if (result==DETECTED_NONE) {
+ printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
+ if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
+ result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
+ }
+ break;
+ case A_CNF_MEDIA_AUTO:
+ writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
+ if (lp->adapter_cnf & A_CNF_10B_T)
+ if ((result = detect_tp(dev)) != DETECTED_NONE)
+ break;
+ if (lp->adapter_cnf & A_CNF_AUI)
+ if ((result = detect_aui(dev)) != DETECTED_NONE)
+ break;
+ if (lp->adapter_cnf & A_CNF_10B_2)
+ if ((result = detect_bnc(dev)) != DETECTED_NONE)
+ break;
+ printk(KERN_ERR "%s: no media detected\n", dev->name);
+ goto release_dma;
+ }
+ switch(result) {
+ case DETECTED_NONE:
+ printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
+ goto release_dma;
+ case DETECTED_RJ45H:
+ printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
+ break;
+ case DETECTED_RJ45F:
+ printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
+ break;
+ case DETECTED_AUI:
+ printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
+ break;
+ case DETECTED_BNC:
+ printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
+ break;
+ }
+
+ /* Turn on both receive and transmit operations */
+ writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
+
+ /* Receive only error free packets addressed to this card */
+ lp->rx_mode = 0;
+ writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
+
+ lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
+
+ if (lp->isa_config & STREAM_TRANSFER)
+ lp->curr_rx_cfg |= RX_STREAM_ENBL;
+#if ALLOW_DMA
+ set_dma_cfg(dev);
+#endif
+ writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
+
+ writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
+ TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
+
+ writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
+#if ALLOW_DMA
+ dma_bufcfg(dev) |
+#endif
+ TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
+
+ /* now that we've got our act together, enable everything */
+ writereg(dev, PP_BusCTL, ENABLE_IRQ
+ | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
+#if ALLOW_DMA
+ | dma_busctl(dev)
+#endif
+ );
+ netif_start_queue(dev);
+ if (net_debug > 1)
+ printk("cs89x0: net_open() succeeded\n");
+ return 0;
+bad_out:
+ return ret;
+}
+
+static void net_timeout(struct net_device *dev)
+{
+ /* If we get here, some higher level has decided we are broken.
+ There should really be a "kick me" function call instead. */
+ if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
+ tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
+ /* Try to restart the adaptor. */
+ netif_wake_queue(dev);
+}
+
+static netdev_tx_t net_send_packet(struct sk_buff *skb,struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ unsigned long flags;
+
+ if (net_debug > 3) {
+ printk("%s: sent %d byte packet of type %x\n",
+ dev->name, skb->len,
+ (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
+ }
+
+ /* keep the upload from being interrupted, since we
+ ask the chip to start transmitting before the
+ whole packet has been completely uploaded. */
+
+ spin_lock_irqsave(&lp->lock, flags);
+ netif_stop_queue(dev);
+
+ /* initiate a transmit sequence */
+ writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
+ writeword(dev->base_addr, TX_LEN_PORT, skb->len);
+
+ /* Test to see if the chip has allocated memory for the packet */
+ if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
+ /*
+ * Gasp! It hasn't. But that shouldn't happen since
+ * we're waiting for TxOk, so return 1 and requeue this packet.
+ */
+
+ spin_unlock_irqrestore(&lp->lock, flags);
+ if (net_debug) printk("cs89x0: Tx buffer not free!\n");
+ return NETDEV_TX_BUSY;
+ }
+ /* Write the contents of the packet */
+ writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ dev->stats.tx_bytes += skb->len;
+ dev_kfree_skb (skb);
+
+ /*
+ * We DO NOT call netif_wake_queue() here.
+ * We also DO NOT call netif_start_queue().
+ *
+ * Either of these would cause another bottom half run through
+ * net_send_packet() before this packet has fully gone out. That causes
+ * us to hit the "Gasp!" above and the send is rescheduled. it runs like
+ * a dog. We just return and wait for the Tx completion interrupt handler
+ * to restart the netdevice layer
+ */
+
+ return NETDEV_TX_OK;
+}
+
+/* The typical workload of the driver:
+ Handle the network interface interrupts. */
+
+static irqreturn_t net_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct net_local *lp;
+ int ioaddr, status;
+ int handled = 0;
+
+ ioaddr = dev->base_addr;
+ lp = netdev_priv(dev);
+
+ /* we MUST read all the events out of the ISQ, otherwise we'll never
+ get interrupted again. As a consequence, we can't have any limit
+ on the number of times we loop in the interrupt handler. The
+ hardware guarantees that eventually we'll run out of events. Of
+ course, if you're on a slow machine, and packets are arriving
+ faster than you can read them off, you're screwed. Hasta la
+ vista, baby! */
+ while ((status = readword(dev->base_addr, ISQ_PORT))) {
+ if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
+ handled = 1;
+ switch(status & ISQ_EVENT_MASK) {
+ case ISQ_RECEIVER_EVENT:
+ /* Got a packet(s). */
+ net_rx(dev);
+ break;
+ case ISQ_TRANSMITTER_EVENT:
+ dev->stats.tx_packets++;
+ netif_wake_queue(dev); /* Inform upper layers. */
+ if ((status & ( TX_OK |
+ TX_LOST_CRS |
+ TX_SQE_ERROR |
+ TX_LATE_COL |
+ TX_16_COL)) != TX_OK) {
+ if ((status & TX_OK) == 0)
+ dev->stats.tx_errors++;
+ if (status & TX_LOST_CRS)
+ dev->stats.tx_carrier_errors++;
+ if (status & TX_SQE_ERROR)
+ dev->stats.tx_heartbeat_errors++;
+ if (status & TX_LATE_COL)
+ dev->stats.tx_window_errors++;
+ if (status & TX_16_COL)
+ dev->stats.tx_aborted_errors++;
+ }
+ break;
+ case ISQ_BUFFER_EVENT:
+ if (status & READY_FOR_TX) {
+ /* we tried to transmit a packet earlier,
+ but inexplicably ran out of buffers.
+ That shouldn't happen since we only ever
+ load one packet. Shrug. Do the right
+ thing anyway. */
+ netif_wake_queue(dev); /* Inform upper layers. */
+ }
+ if (status & TX_UNDERRUN) {
+ if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
+ lp->send_underrun++;
+ if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
+ else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
+ /* transmit cycle is done, although
+ frame wasn't transmitted - this
+ avoids having to wait for the upper
+ layers to timeout on us, in the
+ event of a tx underrun */
+ netif_wake_queue(dev); /* Inform upper layers. */
+ }
+#if ALLOW_DMA
+ if (lp->use_dma && (status & RX_DMA)) {
+ int count = readreg(dev, PP_DmaFrameCnt);
+ while(count) {
+ if (net_debug > 5)
+ printk("%s: receiving %d DMA frames\n", dev->name, count);
+ if (net_debug > 2 && count >1)
+ printk("%s: receiving %d DMA frames\n", dev->name, count);
+ dma_rx(dev);
+ if (--count == 0)
+ count = readreg(dev, PP_DmaFrameCnt);
+ if (net_debug > 2 && count > 0)
+ printk("%s: continuing with %d DMA frames\n", dev->name, count);
+ }
+ }
+#endif
+ break;
+ case ISQ_RX_MISS_EVENT:
+ dev->stats.rx_missed_errors += (status >> 6);
+ break;
+ case ISQ_TX_COL_EVENT:
+ dev->stats.collisions += (status >> 6);
+ break;
+ }
+ }
+ return IRQ_RETVAL(handled);
+}
+
+static void
+count_rx_errors(int status, struct net_device *dev)
+{
+ dev->stats.rx_errors++;
+ if (status & RX_RUNT)
+ dev->stats.rx_length_errors++;
+ if (status & RX_EXTRA_DATA)
+ dev->stats.rx_length_errors++;
+ if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA|RX_RUNT)))
+ /* per str 172 */
+ dev->stats.rx_crc_errors++;
+ if (status & RX_DRIBBLE)
+ dev->stats.rx_frame_errors++;
+}
+
+/* We have a good packet(s), get it/them out of the buffers. */
+static void
+net_rx(struct net_device *dev)
+{
+ struct sk_buff *skb;
+ int status, length;
+
+ int ioaddr = dev->base_addr;
+ status = readword(ioaddr, RX_FRAME_PORT);
+ length = readword(ioaddr, RX_FRAME_PORT);
+
+ if ((status & RX_OK) == 0) {
+ count_rx_errors(status, dev);
+ return;
+ }
+
+ /* Malloc up new buffer. */
+ skb = dev_alloc_skb(length + 2);
+ if (skb == NULL) {
+#if 0 /* Again, this seems a cruel thing to do */
+ printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
+#endif
+ dev->stats.rx_dropped++;
+ return;
+ }
+ skb_reserve(skb, 2); /* longword align L3 header */
+
+ readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
+ if (length & 1)
+ skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
+
+ if (net_debug > 3) {
+ printk( "%s: received %d byte packet of type %x\n",
+ dev->name, length,
+ (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
+ }
+
+ skb->protocol=eth_type_trans(skb,dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += length;
+}
+
+#if ALLOW_DMA
+static void release_dma_buff(struct net_local *lp)
+{
+ if (lp->dma_buff) {
+ free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
+ lp->dma_buff = NULL;
+ }
+}
+#endif
+
+/* The inverse routine to net_open(). */
+static int
+net_close(struct net_device *dev)
+{
+#if ALLOW_DMA
+ struct net_local *lp = netdev_priv(dev);
+#endif
+
+ netif_stop_queue(dev);
+
+ writereg(dev, PP_RxCFG, 0);
+ writereg(dev, PP_TxCFG, 0);
+ writereg(dev, PP_BufCFG, 0);
+ writereg(dev, PP_BusCTL, 0);
+
+ free_irq(dev->irq, dev);
+
+#if ALLOW_DMA
+ if (lp->use_dma && lp->dma) {
+ free_dma(dev->dma);
+ release_dma_buff(lp);
+ }
+#endif
+
+ /* Update the statistics here. */
+ return 0;
+}
+
+/* Get the current statistics. This may be called with the card open or
+ closed. */
+static struct net_device_stats *
+net_get_stats(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&lp->lock, flags);
+ /* Update the statistics from the device registers. */
+ dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
+ dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ return &dev->stats;
+}
+
+static void set_multicast_list(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&lp->lock, flags);
+ if(dev->flags&IFF_PROMISC)
+ {
+ lp->rx_mode = RX_ALL_ACCEPT;
+ }
+ else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev))
+ {
+ /* The multicast-accept list is initialized to accept-all, and we
+ rely on higher-level filtering for now. */
+ lp->rx_mode = RX_MULTCAST_ACCEPT;
+ }
+ else
+ lp->rx_mode = 0;
+
+ writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
+
+ /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
+ writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
+ (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
+ spin_unlock_irqrestore(&lp->lock, flags);
+}
+
+
+static int set_mac_address(struct net_device *dev, void *p)
+{
+ int i;
+ struct sockaddr *addr = p;
+
+ if (netif_running(dev))
+ return -EBUSY;
+
+ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+
+ if (net_debug)
+ printk("%s: Setting MAC address to %pM.\n",
+ dev->name, dev->dev_addr);
+
+ /* set the Ethernet address */
+ for (i=0; i < ETH_ALEN/2; i++)
+ writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
+
+ return 0;
+}
+
+#ifdef MODULE
+
+static struct net_device *dev_cs89x0;
+
+/*
+ * Support the 'debug' module parm even if we're compiled for non-debug to
+ * avoid breaking someone's startup scripts
+ */
+
+static int io;
+static int irq;
+static int debug;
+static char media[8];
+static int duplex=-1;
+
+static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
+static int dma;
+static int dmasize=16; /* or 64 */
+
+module_param(io, int, 0);
+module_param(irq, int, 0);
+module_param(debug, int, 0);
+module_param_string(media, media, sizeof(media), 0);
+module_param(duplex, int, 0);
+module_param(dma , int, 0);
+module_param(dmasize , int, 0);
+module_param(use_dma , int, 0);
+MODULE_PARM_DESC(io, "cs89x0 I/O base address");
+MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
+#if DEBUGGING
+MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
+#else
+MODULE_PARM_DESC(debug, "(ignored)");
+#endif
+MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
+/* No other value than -1 for duplex seems to be currently interpreted */
+MODULE_PARM_DESC(duplex, "(ignored)");
+#if ALLOW_DMA
+MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
+MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
+MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
+#else
+MODULE_PARM_DESC(dma , "(ignored)");
+MODULE_PARM_DESC(dmasize , "(ignored)");
+MODULE_PARM_DESC(use_dma , "(ignored)");
+#endif
+
+MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton");
+MODULE_LICENSE("GPL");
+
+
+/*
+* media=t - specify media type
+ or media=2
+ or media=aui
+ or medai=auto
+* duplex=0 - specify forced half/full/autonegotiate duplex
+* debug=# - debug level
+
+
+* Default Chip Configuration:
+ * DMA Burst = enabled
+ * IOCHRDY Enabled = enabled
+ * UseSA = enabled
+ * CS8900 defaults to half-duplex if not specified on command-line
+ * CS8920 defaults to autoneg if not specified on command-line
+ * Use reset defaults for other config parameters
+
+* Assumptions:
+ * media type specified is supported (circuitry is present)
+ * if memory address is > 1MB, then required mem decode hw is present
+ * if 10B-2, then agent other than driver will enable DC/DC converter
+ (hw or software util)
+
+
+*/
+
+int __init init_module(void)
+{
+ struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
+ struct net_local *lp;
+ int ret = 0;
+
+#if DEBUGGING
+ net_debug = debug;
+#else
+ debug = 0;
+#endif
+ if (!dev)
+ return -ENOMEM;
+
+ dev->irq = irq;
+ dev->base_addr = io;
+ lp = netdev_priv(dev);
+
+#if ALLOW_DMA
+ if (use_dma) {
+ lp->use_dma = use_dma;
+ lp->dma = dma;
+ lp->dmasize = dmasize;
+ }
+#endif
+
+ spin_lock_init(&lp->lock);
+
+ /* boy, they'd better get these right */
+ if (!strcmp(media, "rj45"))
+ lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
+ else if (!strcmp(media, "aui"))
+ lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
+ else if (!strcmp(media, "bnc"))
+ lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
+ else
+ lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
+
+ if (duplex==-1)
+ lp->auto_neg_cnf = AUTO_NEG_ENABLE;
+
+ if (io == 0) {
+ printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
+ printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
+ ret = -EPERM;
+ goto out;
+ } else if (io <= 0x1ff) {
+ ret = -ENXIO;
+ goto out;
+ }
+
+#if ALLOW_DMA
+ if (use_dma && dmasize != 16 && dmasize != 64) {
+ printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
+ ret = -EPERM;
+ goto out;
+ }
+#endif
+ ret = cs89x0_probe1(dev, io, 1);
+ if (ret)
+ goto out;
+
+ dev_cs89x0 = dev;
+ return 0;
+out:
+ free_netdev(dev);
+ return ret;
+}
+
+void __exit
+cleanup_module(void)
+{
+ unregister_netdev(dev_cs89x0);
+ writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
+ release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
+ free_netdev(dev_cs89x0);
+}
+#endif /* MODULE */
+
+/*
+ * Local variables:
+ * version-control: t
+ * kept-new-versions: 5
+ * c-indent-level: 8
+ * tab-width: 8
+ * End:
+ *
+ */
--- /dev/null
+/* Copyright, 1988-1992, Russell Nelson, Crynwr Software
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, version 1.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#define PP_ChipID 0x0000 /* offset 0h -> Corp -ID */
+ /* offset 2h -> Model/Product Number */
+ /* offset 3h -> Chip Revision Number */
+
+#define PP_ISAIOB 0x0020 /* IO base address */
+#define PP_CS8900_ISAINT 0x0022 /* ISA interrupt select */
+#define PP_CS8920_ISAINT 0x0370 /* ISA interrupt select */
+#define PP_CS8900_ISADMA 0x0024 /* ISA Rec DMA channel */
+#define PP_CS8920_ISADMA 0x0374 /* ISA Rec DMA channel */
+#define PP_ISASOF 0x0026 /* ISA DMA offset */
+#define PP_DmaFrameCnt 0x0028 /* ISA DMA Frame count */
+#define PP_DmaByteCnt 0x002A /* ISA DMA Byte count */
+#define PP_CS8900_ISAMemB 0x002C /* Memory base */
+#define PP_CS8920_ISAMemB 0x0348 /* */
+
+#define PP_ISABootBase 0x0030 /* Boot Prom base */
+#define PP_ISABootMask 0x0034 /* Boot Prom Mask */
+
+/* EEPROM data and command registers */
+#define PP_EECMD 0x0040 /* NVR Interface Command register */
+#define PP_EEData 0x0042 /* NVR Interface Data Register */
+#define PP_DebugReg 0x0044 /* Debug Register */
+
+#define PP_RxCFG 0x0102 /* Rx Bus config */
+#define PP_RxCTL 0x0104 /* Receive Control Register */
+#define PP_TxCFG 0x0106 /* Transmit Config Register */
+#define PP_TxCMD 0x0108 /* Transmit Command Register */
+#define PP_BufCFG 0x010A /* Bus configuration Register */
+#define PP_LineCTL 0x0112 /* Line Config Register */
+#define PP_SelfCTL 0x0114 /* Self Command Register */
+#define PP_BusCTL 0x0116 /* ISA bus control Register */
+#define PP_TestCTL 0x0118 /* Test Register */
+#define PP_AutoNegCTL 0x011C /* Auto Negotiation Ctrl */
+
+#define PP_ISQ 0x0120 /* Interrupt Status */
+#define PP_RxEvent 0x0124 /* Rx Event Register */
+#define PP_TxEvent 0x0128 /* Tx Event Register */
+#define PP_BufEvent 0x012C /* Bus Event Register */
+#define PP_RxMiss 0x0130 /* Receive Miss Count */
+#define PP_TxCol 0x0132 /* Transmit Collision Count */
+#define PP_LineST 0x0134 /* Line State Register */
+#define PP_SelfST 0x0136 /* Self State register */
+#define PP_BusST 0x0138 /* Bus Status */
+#define PP_TDR 0x013C /* Time Domain Reflectometry */
+#define PP_AutoNegST 0x013E /* Auto Neg Status */
+#define PP_TxCommand 0x0144 /* Tx Command */
+#define PP_TxLength 0x0146 /* Tx Length */
+#define PP_LAF 0x0150 /* Hash Table */
+#define PP_IA 0x0158 /* Physical Address Register */
+
+#define PP_RxStatus 0x0400 /* Receive start of frame */
+#define PP_RxLength 0x0402 /* Receive Length of frame */
+#define PP_RxFrame 0x0404 /* Receive frame pointer */
+#define PP_TxFrame 0x0A00 /* Transmit frame pointer */
+
+/* Primary I/O Base Address. If no I/O base is supplied by the user, then this */
+/* can be used as the default I/O base to access the PacketPage Area. */
+#define DEFAULTIOBASE 0x0300
+#define FIRST_IO 0x020C /* First I/O port to check */
+#define LAST_IO 0x037C /* Last I/O port to check (+10h) */
+#define ADD_MASK 0x3000 /* Mask it use of the ADD_PORT register */
+#define ADD_SIG 0x3000 /* Expected ID signature */
+
+/* On Macs, we only need use the ISA I/O stuff until we do MEMORY_ON */
+#ifdef CONFIG_MAC
+#define LCSLOTBASE 0xfee00000
+#define MMIOBASE 0x40000
+#endif
+
+#define CHIP_EISA_ID_SIG 0x630E /* Product ID Code for Crystal Chip (CS8900 spec 4.3) */
+#define CHIP_EISA_ID_SIG_STR "0x630E"
+
+#ifdef IBMEIPKT
+#define EISA_ID_SIG 0x4D24 /* IBM */
+#define PART_NO_SIG 0x1010 /* IBM */
+#define MONGOOSE_BIT 0x0000 /* IBM */
+#else
+#define EISA_ID_SIG 0x630E /* PnP Vendor ID (same as chip id for Crystal board) */
+#define PART_NO_SIG 0x4000 /* ID code CS8920 board (PnP Vendor Product code) */
+#define MONGOOSE_BIT 0x2000 /* PART_NO_SIG + MONGOOSE_BUT => ID of mongoose */
+#endif
+
+#define PRODUCT_ID_ADD 0x0002 /* Address of product ID */
+
+/* Mask to find out the types of registers */
+#define REG_TYPE_MASK 0x001F
+
+/* Eeprom Commands */
+#define ERSE_WR_ENBL 0x00F0
+#define ERSE_WR_DISABLE 0x0000
+
+/* Defines Control/Config register quintuplet numbers */
+#define RX_BUF_CFG 0x0003
+#define RX_CONTROL 0x0005
+#define TX_CFG 0x0007
+#define TX_COMMAND 0x0009
+#define BUF_CFG 0x000B
+#define LINE_CONTROL 0x0013
+#define SELF_CONTROL 0x0015
+#define BUS_CONTROL 0x0017
+#define TEST_CONTROL 0x0019
+
+/* Defines Status/Count registers quintuplet numbers */
+#define RX_EVENT 0x0004
+#define TX_EVENT 0x0008
+#define BUF_EVENT 0x000C
+#define RX_MISS_COUNT 0x0010
+#define TX_COL_COUNT 0x0012
+#define LINE_STATUS 0x0014
+#define SELF_STATUS 0x0016
+#define BUS_STATUS 0x0018
+#define TDR 0x001C
+
+/* PP_RxCFG - Receive Configuration and Interrupt Mask bit definition - Read/write */
+#define SKIP_1 0x0040
+#define RX_STREAM_ENBL 0x0080
+#define RX_OK_ENBL 0x0100
+#define RX_DMA_ONLY 0x0200
+#define AUTO_RX_DMA 0x0400
+#define BUFFER_CRC 0x0800
+#define RX_CRC_ERROR_ENBL 0x1000
+#define RX_RUNT_ENBL 0x2000
+#define RX_EXTRA_DATA_ENBL 0x4000
+
+/* PP_RxCTL - Receive Control bit definition - Read/write */
+#define RX_IA_HASH_ACCEPT 0x0040
+#define RX_PROM_ACCEPT 0x0080
+#define RX_OK_ACCEPT 0x0100
+#define RX_MULTCAST_ACCEPT 0x0200
+#define RX_IA_ACCEPT 0x0400
+#define RX_BROADCAST_ACCEPT 0x0800
+#define RX_BAD_CRC_ACCEPT 0x1000
+#define RX_RUNT_ACCEPT 0x2000
+#define RX_EXTRA_DATA_ACCEPT 0x4000
+#define RX_ALL_ACCEPT (RX_PROM_ACCEPT|RX_BAD_CRC_ACCEPT|RX_RUNT_ACCEPT|RX_EXTRA_DATA_ACCEPT)
+/* Default receive mode - individually addressed, broadcast, and error free */
+#define DEF_RX_ACCEPT (RX_IA_ACCEPT | RX_BROADCAST_ACCEPT | RX_OK_ACCEPT)
+
+/* PP_TxCFG - Transmit Configuration Interrupt Mask bit definition - Read/write */
+#define TX_LOST_CRS_ENBL 0x0040
+#define TX_SQE_ERROR_ENBL 0x0080
+#define TX_OK_ENBL 0x0100
+#define TX_LATE_COL_ENBL 0x0200
+#define TX_JBR_ENBL 0x0400
+#define TX_ANY_COL_ENBL 0x0800
+#define TX_16_COL_ENBL 0x8000
+
+/* PP_TxCMD - Transmit Command bit definition - Read-only */
+#define TX_START_4_BYTES 0x0000
+#define TX_START_64_BYTES 0x0040
+#define TX_START_128_BYTES 0x0080
+#define TX_START_ALL_BYTES 0x00C0
+#define TX_FORCE 0x0100
+#define TX_ONE_COL 0x0200
+#define TX_TWO_PART_DEFF_DISABLE 0x0400
+#define TX_NO_CRC 0x1000
+#define TX_RUNT 0x2000
+
+/* PP_BufCFG - Buffer Configuration Interrupt Mask bit definition - Read/write */
+#define GENERATE_SW_INTERRUPT 0x0040
+#define RX_DMA_ENBL 0x0080
+#define READY_FOR_TX_ENBL 0x0100
+#define TX_UNDERRUN_ENBL 0x0200
+#define RX_MISS_ENBL 0x0400
+#define RX_128_BYTE_ENBL 0x0800
+#define TX_COL_COUNT_OVRFLOW_ENBL 0x1000
+#define RX_MISS_COUNT_OVRFLOW_ENBL 0x2000
+#define RX_DEST_MATCH_ENBL 0x8000
+
+/* PP_LineCTL - Line Control bit definition - Read/write */
+#define SERIAL_RX_ON 0x0040
+#define SERIAL_TX_ON 0x0080
+#define AUI_ONLY 0x0100
+#define AUTO_AUI_10BASET 0x0200
+#define MODIFIED_BACKOFF 0x0800
+#define NO_AUTO_POLARITY 0x1000
+#define TWO_PART_DEFDIS 0x2000
+#define LOW_RX_SQUELCH 0x4000
+
+/* PP_SelfCTL - Software Self Control bit definition - Read/write */
+#define POWER_ON_RESET 0x0040
+#define SW_STOP 0x0100
+#define SLEEP_ON 0x0200
+#define AUTO_WAKEUP 0x0400
+#define HCB0_ENBL 0x1000
+#define HCB1_ENBL 0x2000
+#define HCB0 0x4000
+#define HCB1 0x8000
+
+/* PP_BusCTL - ISA Bus Control bit definition - Read/write */
+#define RESET_RX_DMA 0x0040
+#define MEMORY_ON 0x0400
+#define DMA_BURST_MODE 0x0800
+#define IO_CHANNEL_READY_ON 0x1000
+#define RX_DMA_SIZE_64K 0x2000
+#define ENABLE_IRQ 0x8000
+
+/* PP_TestCTL - Test Control bit definition - Read/write */
+#define LINK_OFF 0x0080
+#define ENDEC_LOOPBACK 0x0200
+#define AUI_LOOPBACK 0x0400
+#define BACKOFF_OFF 0x0800
+#define FDX_8900 0x4000
+#define FAST_TEST 0x8000
+
+/* PP_RxEvent - Receive Event Bit definition - Read-only */
+#define RX_IA_HASHED 0x0040
+#define RX_DRIBBLE 0x0080
+#define RX_OK 0x0100
+#define RX_HASHED 0x0200
+#define RX_IA 0x0400
+#define RX_BROADCAST 0x0800
+#define RX_CRC_ERROR 0x1000
+#define RX_RUNT 0x2000
+#define RX_EXTRA_DATA 0x4000
+
+#define HASH_INDEX_MASK 0x0FC00
+
+/* PP_TxEvent - Transmit Event Bit definition - Read-only */
+#define TX_LOST_CRS 0x0040
+#define TX_SQE_ERROR 0x0080
+#define TX_OK 0x0100
+#define TX_LATE_COL 0x0200
+#define TX_JBR 0x0400
+#define TX_16_COL 0x8000
+#define TX_SEND_OK_BITS (TX_OK|TX_LOST_CRS)
+#define TX_COL_COUNT_MASK 0x7800
+
+/* PP_BufEvent - Buffer Event Bit definition - Read-only */
+#define SW_INTERRUPT 0x0040
+#define RX_DMA 0x0080
+#define READY_FOR_TX 0x0100
+#define TX_UNDERRUN 0x0200
+#define RX_MISS 0x0400
+#define RX_128_BYTE 0x0800
+#define TX_COL_OVRFLW 0x1000
+#define RX_MISS_OVRFLW 0x2000
+#define RX_DEST_MATCH 0x8000
+
+/* PP_LineST - Ethernet Line Status bit definition - Read-only */
+#define LINK_OK 0x0080
+#define AUI_ON 0x0100
+#define TENBASET_ON 0x0200
+#define POLARITY_OK 0x1000
+#define CRS_OK 0x4000
+
+/* PP_SelfST - Chip Software Status bit definition */
+#define ACTIVE_33V 0x0040
+#define INIT_DONE 0x0080
+#define SI_BUSY 0x0100
+#define EEPROM_PRESENT 0x0200
+#define EEPROM_OK 0x0400
+#define EL_PRESENT 0x0800
+#define EE_SIZE_64 0x1000
+
+/* PP_BusST - ISA Bus Status bit definition */
+#define TX_BID_ERROR 0x0080
+#define READY_FOR_TX_NOW 0x0100
+
+/* PP_AutoNegCTL - Auto Negotiation Control bit definition */
+#define RE_NEG_NOW 0x0040
+#define ALLOW_FDX 0x0080
+#define AUTO_NEG_ENABLE 0x0100
+#define NLP_ENABLE 0x0200
+#define FORCE_FDX 0x8000
+#define AUTO_NEG_BITS (FORCE_FDX|NLP_ENABLE|AUTO_NEG_ENABLE)
+#define AUTO_NEG_MASK (FORCE_FDX|NLP_ENABLE|AUTO_NEG_ENABLE|ALLOW_FDX|RE_NEG_NOW)
+
+/* PP_AutoNegST - Auto Negotiation Status bit definition */
+#define AUTO_NEG_BUSY 0x0080
+#define FLP_LINK 0x0100
+#define FLP_LINK_GOOD 0x0800
+#define LINK_FAULT 0x1000
+#define HDX_ACTIVE 0x4000
+#define FDX_ACTIVE 0x8000
+
+/* The following block defines the ISQ event types */
+#define ISQ_RECEIVER_EVENT 0x04
+#define ISQ_TRANSMITTER_EVENT 0x08
+#define ISQ_BUFFER_EVENT 0x0c
+#define ISQ_RX_MISS_EVENT 0x10
+#define ISQ_TX_COL_EVENT 0x12
+
+#define ISQ_EVENT_MASK 0x003F /* ISQ mask to find out type of event */
+#define ISQ_HIST 16 /* small history buffer */
+#define AUTOINCREMENT 0x8000 /* Bit mask to set bit-15 for autoincrement */
+
+#define TXRXBUFSIZE 0x0600
+#define RXDMABUFSIZE 0x8000
+#define RXDMASIZE 0x4000
+#define TXRX_LENGTH_MASK 0x07FF
+
+/* rx options bits */
+#define RCV_WITH_RXON 1 /* Set SerRx ON */
+#define RCV_COUNTS 2 /* Use Framecnt1 */
+#define RCV_PONG 4 /* Pong respondent */
+#define RCV_DONG 8 /* Dong operation */
+#define RCV_POLLING 0x10 /* Poll RxEvent */
+#define RCV_ISQ 0x20 /* Use ISQ, int */
+#define RCV_AUTO_DMA 0x100 /* Set AutoRxDMAE */
+#define RCV_DMA 0x200 /* Set RxDMA only */
+#define RCV_DMA_ALL 0x400 /* Copy all DMA'ed */
+#define RCV_FIXED_DATA 0x800 /* Every frame same */
+#define RCV_IO 0x1000 /* Use ISA IO only */
+#define RCV_MEMORY 0x2000 /* Use ISA Memory */
+
+#define RAM_SIZE 0x1000 /* The card has 4k bytes or RAM */
+#define PKT_START PP_TxFrame /* Start of packet RAM */
+
+#define RX_FRAME_PORT 0x0000
+#define TX_FRAME_PORT RX_FRAME_PORT
+#define TX_CMD_PORT 0x0004
+#define TX_NOW 0x0000 /* Tx packet after 5 bytes copied */
+#define TX_AFTER_381 0x0040 /* Tx packet after 381 bytes copied */
+#define TX_AFTER_ALL 0x00c0 /* Tx packet after all bytes copied */
+#define TX_LEN_PORT 0x0006
+#define ISQ_PORT 0x0008
+#define ADD_PORT 0x000A
+#define DATA_PORT 0x000C
+
+#define EEPROM_WRITE_EN 0x00F0
+#define EEPROM_WRITE_DIS 0x0000
+#define EEPROM_WRITE_CMD 0x0100
+#define EEPROM_READ_CMD 0x0200
+
+/* Receive Header */
+/* Description of header of each packet in receive area of memory */
+#define RBUF_EVENT_LOW 0 /* Low byte of RxEvent - status of received frame */
+#define RBUF_EVENT_HIGH 1 /* High byte of RxEvent - status of received frame */
+#define RBUF_LEN_LOW 2 /* Length of received data - low byte */
+#define RBUF_LEN_HI 3 /* Length of received data - high byte */
+#define RBUF_HEAD_LEN 4 /* Length of this header */
+
+#define CHIP_READ 0x1 /* Used to mark state of the repins code (chip or dma) */
+#define DMA_READ 0x2 /* Used to mark state of the repins code (chip or dma) */
+
+/* for bios scan */
+/* */
+#ifdef CSDEBUG
+/* use these values for debugging bios scan */
+#define BIOS_START_SEG 0x00000
+#define BIOS_OFFSET_INC 0x0010
+#else
+#define BIOS_START_SEG 0x0c000
+#define BIOS_OFFSET_INC 0x0200
+#endif
+
+#define BIOS_LAST_OFFSET 0x0fc00
+
+/* Byte offsets into the EEPROM configuration buffer */
+#define ISA_CNF_OFFSET 0x6
+#define TX_CTL_OFFSET (ISA_CNF_OFFSET + 8) /* 8900 eeprom */
+#define AUTO_NEG_CNF_OFFSET (ISA_CNF_OFFSET + 8) /* 8920 eeprom */
+
+ /* the assumption here is that the bits in the eeprom are generally */
+ /* in the same position as those in the autonegctl register. */
+ /* Of course the IMM bit is not in that register so it must be */
+ /* masked out */
+#define EE_FORCE_FDX 0x8000
+#define EE_NLP_ENABLE 0x0200
+#define EE_AUTO_NEG_ENABLE 0x0100
+#define EE_ALLOW_FDX 0x0080
+#define EE_AUTO_NEG_CNF_MASK (EE_FORCE_FDX|EE_NLP_ENABLE|EE_AUTO_NEG_ENABLE|EE_ALLOW_FDX)
+
+#define IMM_BIT 0x0040 /* ignore missing media */
+
+#define ADAPTER_CNF_OFFSET (AUTO_NEG_CNF_OFFSET + 2)
+#define A_CNF_10B_T 0x0001
+#define A_CNF_AUI 0x0002
+#define A_CNF_10B_2 0x0004
+#define A_CNF_MEDIA_TYPE 0x0070
+#define A_CNF_MEDIA_AUTO 0x0070
+#define A_CNF_MEDIA_10B_T 0x0020
+#define A_CNF_MEDIA_AUI 0x0040
+#define A_CNF_MEDIA_10B_2 0x0010
+#define A_CNF_DC_DC_POLARITY 0x0080
+#define A_CNF_NO_AUTO_POLARITY 0x2000
+#define A_CNF_LOW_RX_SQUELCH 0x4000
+#define A_CNF_EXTND_10B_2 0x8000
+
+#define PACKET_PAGE_OFFSET 0x8
+
+/* Bit definitions for the ISA configuration word from the EEPROM */
+#define INT_NO_MASK 0x000F
+#define DMA_NO_MASK 0x0070
+#define ISA_DMA_SIZE 0x0200
+#define ISA_AUTO_RxDMA 0x0400
+#define ISA_RxDMA 0x0800
+#define DMA_BURST 0x1000
+#define STREAM_TRANSFER 0x2000
+#define ANY_ISA_DMA (ISA_AUTO_RxDMA | ISA_RxDMA)
+
+/* DMA controller registers */
+#define DMA_BASE 0x00 /* DMA controller base */
+#define DMA_BASE_2 0x0C0 /* DMA controller base */
+
+#define DMA_STAT 0x0D0 /* DMA controller status register */
+#define DMA_MASK 0x0D4 /* DMA controller mask register */
+#define DMA_MODE 0x0D6 /* DMA controller mode register */
+#define DMA_RESETFF 0x0D8 /* DMA controller first/last flip flop */
+
+/* DMA data */
+#define DMA_DISABLE 0x04 /* Disable channel n */
+#define DMA_ENABLE 0x00 /* Enable channel n */
+/* Demand transfers, incr. address, auto init, writes, ch. n */
+#define DMA_RX_MODE 0x14
+/* Demand transfers, incr. address, auto init, reads, ch. n */
+#define DMA_TX_MODE 0x18
+
+#define DMA_SIZE (16*1024) /* Size of dma buffer - 16k */
+
+#define CS8900 0x0000
+#define CS8920 0x4000
+#define CS8920M 0x6000
+#define REVISON_BITS 0x1F00
+#define EEVER_NUMBER 0x12
+#define CHKSUM_LEN 0x14
+#define CHKSUM_VAL 0x0000
+#define START_EEPROM_DATA 0x001c /* Offset into eeprom for start of data */
+#define IRQ_MAP_EEPROM_DATA 0x0046 /* Offset into eeprom for the IRQ map */
+#define IRQ_MAP_LEN 0x0004 /* No of bytes to read for the IRQ map */
+#define PNP_IRQ_FRMT 0x0022 /* PNP small item IRQ format */
+#define CS8900_IRQ_MAP 0x1c20 /* This IRQ map is fixed */
+
+#define CS8920_NO_INTS 0x0F /* Max CS8920 interrupt select # */
+
+#define PNP_ADD_PORT 0x0279
+#define PNP_WRITE_PORT 0x0A79
+
+#define GET_PNP_ISA_STRUCT 0x40
+#define PNP_ISA_STRUCT_LEN 0x06
+#define PNP_CSN_CNT_OFF 0x01
+#define PNP_RD_PORT_OFF 0x02
+#define PNP_FUNCTION_OK 0x00
+#define PNP_WAKE 0x03
+#define PNP_RSRC_DATA 0x04
+#define PNP_RSRC_READY 0x01
+#define PNP_STATUS 0x05
+#define PNP_ACTIVATE 0x30
+#define PNP_CNF_IO_H 0x60
+#define PNP_CNF_IO_L 0x61
+#define PNP_CNF_INT 0x70
+#define PNP_CNF_DMA 0x74
+#define PNP_CNF_MEM 0x48
+
+#define BIT0 1
+#define BIT15 0x8000
+
--- /dev/null
+/* mac89x0.c: A Crystal Semiconductor CS89[02]0 driver for linux. */
+/*
+ Written 1996 by Russell Nelson, with reference to skeleton.c
+ written 1993-1994 by Donald Becker.
+
+ This software may be used and distributed according to the terms
+ of the GNU General Public License, incorporated herein by reference.
+
+ The author may be reached at nelson@crynwr.com, Crynwr
+ Software, 11 Grant St., Potsdam, NY 13676
+
+ Changelog:
+
+ Mike Cruse : mcruse@cti-ltd.com
+ : Changes for Linux 2.0 compatibility.
+ : Added dev_id parameter in net_interrupt(),
+ : request_irq() and free_irq(). Just NULL for now.
+
+ Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
+ : in net_open() and net_close() so kerneld would know
+ : that the module is in use and wouldn't eject the
+ : driver prematurely.
+
+ Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
+ : as an example. Disabled autoprobing in init_module(),
+ : not a good thing to do to other devices while Linux
+ : is running from all accounts.
+
+ Alan Cox : Removed 1.2 support, added 2.1 extra counters.
+
+ David Huggins-Daines <dhd@debian.org>
+
+ Split this off into mac89x0.c, and gutted it of all parts which are
+ not relevant to the existing CS8900 cards on the Macintosh
+ (i.e. basically the Daynaport CS and LC cards). To be precise:
+
+ * Removed all the media-detection stuff, because these cards are
+ TP-only.
+
+ * Lobotomized the ISA interrupt bogosity, because these cards use
+ a hardwired NuBus interrupt and a magic ISAIRQ value in the card.
+
+ * Basically eliminated everything not relevant to getting the
+ cards minimally functioning on the Macintosh.
+
+ I might add that these cards are badly designed even from the Mac
+ standpoint, in that Dayna, in their infinite wisdom, used NuBus slot
+ I/O space and NuBus interrupts for these cards, but neglected to
+ provide anything even remotely resembling a NuBus ROM. Therefore we
+ have to probe for them in a brain-damaged ISA-like fashion.
+
+ Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 11/01/2001
+ check kmalloc and release the allocated memory on failure in
+ mac89x0_probe and in init_module
+ use local_irq_{save,restore}(flags) in net_get_stat, not just
+ local_irq_{dis,en}able()
+*/
+
+static char *version =
+"cs89x0.c:v1.02 11/26/96 Russell Nelson <nelson@crynwr.com>\n";
+
+/* ======================= configure the driver here ======================= */
+
+/* use 0 for production, 1 for verification, >2 for debug */
+#ifndef NET_DEBUG
+#define NET_DEBUG 0
+#endif
+
+/* ======================= end of configuration ======================= */
+
+
+/* Always include 'config.h' first in case the user wants to turn on
+ or override something. */
+#include <linux/module.h>
+
+/*
+ Sources:
+
+ Crynwr packet driver epktisa.
+
+ Crystal Semiconductor data sheets.
+
+*/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/nubus.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <linux/gfp.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/hwtest.h>
+#include <asm/macints.h>
+
+#include "cs89x0.h"
+
+static unsigned int net_debug = NET_DEBUG;
+
+/* Information that need to be kept for each board. */
+struct net_local {
+ int chip_type; /* one of: CS8900, CS8920, CS8920M */
+ char chip_revision; /* revision letter of the chip ('A'...) */
+ int send_cmd; /* the propercommand used to send a packet. */
+ int rx_mode;
+ int curr_rx_cfg;
+ int send_underrun; /* keep track of how many underruns in a row we get */
+ struct sk_buff *skb;
+};
+
+/* Index to functions, as function prototypes. */
+
+#if 0
+extern void reset_chip(struct net_device *dev);
+#endif
+static int net_open(struct net_device *dev);
+static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t net_interrupt(int irq, void *dev_id);
+static void set_multicast_list(struct net_device *dev);
+static void net_rx(struct net_device *dev);
+static int net_close(struct net_device *dev);
+static struct net_device_stats *net_get_stats(struct net_device *dev);
+static int set_mac_address(struct net_device *dev, void *addr);
+
+
+/* Example routines you must write ;->. */
+#define tx_done(dev) 1
+
+/* For reading/writing registers ISA-style */
+static inline int
+readreg_io(struct net_device *dev, int portno)
+{
+ nubus_writew(swab16(portno), dev->base_addr + ADD_PORT);
+ return swab16(nubus_readw(dev->base_addr + DATA_PORT));
+}
+
+static inline void
+writereg_io(struct net_device *dev, int portno, int value)
+{
+ nubus_writew(swab16(portno), dev->base_addr + ADD_PORT);
+ nubus_writew(swab16(value), dev->base_addr + DATA_PORT);
+}
+
+/* These are for reading/writing registers in shared memory */
+static inline int
+readreg(struct net_device *dev, int portno)
+{
+ return swab16(nubus_readw(dev->mem_start + portno));
+}
+
+static inline void
+writereg(struct net_device *dev, int portno, int value)
+{
+ nubus_writew(swab16(value), dev->mem_start + portno);
+}
+
+static const struct net_device_ops mac89x0_netdev_ops = {
+ .ndo_open = net_open,
+ .ndo_stop = net_close,
+ .ndo_start_xmit = net_send_packet,
+ .ndo_get_stats = net_get_stats,
+ .ndo_set_multicast_list = set_multicast_list,
+ .ndo_set_mac_address = set_mac_address,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+};
+
+/* Probe for the CS8900 card in slot E. We won't bother looking
+ anywhere else until we have a really good reason to do so. */
+struct net_device * __init mac89x0_probe(int unit)
+{
+ struct net_device *dev;
+ static int once_is_enough;
+ struct net_local *lp;
+ static unsigned version_printed;
+ int i, slot;
+ unsigned rev_type = 0;
+ unsigned long ioaddr;
+ unsigned short sig;
+ int err = -ENODEV;
+
+ if (!MACH_IS_MAC)
+ return ERR_PTR(-ENODEV);
+
+ dev = alloc_etherdev(sizeof(struct net_local));
+ if (!dev)
+ return ERR_PTR(-ENOMEM);
+
+ if (unit >= 0) {
+ sprintf(dev->name, "eth%d", unit);
+ netdev_boot_setup_check(dev);
+ }
+
+ if (once_is_enough)
+ goto out;
+ once_is_enough = 1;
+
+ /* We might have to parameterize this later */
+ slot = 0xE;
+ /* Get out now if there's a real NuBus card in slot E */
+ if (nubus_find_slot(slot, NULL) != NULL)
+ goto out;
+
+ /* The pseudo-ISA bits always live at offset 0x300 (gee,
+ wonder why...) */
+ ioaddr = (unsigned long)
+ nubus_slot_addr(slot) | (((slot&0xf) << 20) + DEFAULTIOBASE);
+ {
+ unsigned long flags;
+ int card_present;
+
+ local_irq_save(flags);
+ card_present = (hwreg_present((void*) ioaddr+4) &&
+ hwreg_present((void*) ioaddr + DATA_PORT));
+ local_irq_restore(flags);
+
+ if (!card_present)
+ goto out;
+ }
+
+ nubus_writew(0, ioaddr + ADD_PORT);
+ sig = nubus_readw(ioaddr + DATA_PORT);
+ if (sig != swab16(CHIP_EISA_ID_SIG))
+ goto out;
+
+ /* Initialize the net_device structure. */
+ lp = netdev_priv(dev);
+
+ /* Fill in the 'dev' fields. */
+ dev->base_addr = ioaddr;
+ dev->mem_start = (unsigned long)
+ nubus_slot_addr(slot) | (((slot&0xf) << 20) + MMIOBASE);
+ dev->mem_end = dev->mem_start + 0x1000;
+
+ /* Turn on shared memory */
+ writereg_io(dev, PP_BusCTL, MEMORY_ON);
+
+ /* get the chip type */
+ rev_type = readreg(dev, PRODUCT_ID_ADD);
+ lp->chip_type = rev_type &~ REVISON_BITS;
+ lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
+
+ /* Check the chip type and revision in order to set the correct send command
+ CS8920 revision C and CS8900 revision F can use the faster send. */
+ lp->send_cmd = TX_AFTER_381;
+ if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
+ lp->send_cmd = TX_NOW;
+ if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
+ lp->send_cmd = TX_NOW;
+
+ if (net_debug && version_printed++ == 0)
+ printk(version);
+
+ printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#8lx",
+ dev->name,
+ lp->chip_type==CS8900?'0':'2',
+ lp->chip_type==CS8920M?"M":"",
+ lp->chip_revision,
+ dev->base_addr);
+
+ /* Try to read the MAC address */
+ if ((readreg(dev, PP_SelfST) & (EEPROM_PRESENT | EEPROM_OK)) == 0) {
+ printk("\nmac89x0: No EEPROM, giving up now.\n");
+ goto out1;
+ } else {
+ for (i = 0; i < ETH_ALEN; i += 2) {
+ /* Big-endian (why??!) */
+ unsigned short s = readreg(dev, PP_IA + i);
+ dev->dev_addr[i] = s >> 8;
+ dev->dev_addr[i+1] = s & 0xff;
+ }
+ }
+
+ dev->irq = SLOT2IRQ(slot);
+
+ /* print the IRQ and ethernet address. */
+
+ printk(" IRQ %d ADDR %pM\n", dev->irq, dev->dev_addr);
+
+ dev->netdev_ops = &mac89x0_netdev_ops;
+
+ err = register_netdev(dev);
+ if (err)
+ goto out1;
+ return NULL;
+out1:
+ nubus_writew(0, dev->base_addr + ADD_PORT);
+out:
+ free_netdev(dev);
+ return ERR_PTR(err);
+}
+
+#if 0
+/* This is useful for something, but I don't know what yet. */
+void __init reset_chip(struct net_device *dev)
+{
+ int reset_start_time;
+
+ writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
+
+ /* wait 30 ms */
+ msleep_interruptible(30);
+
+ /* Wait until the chip is reset */
+ reset_start_time = jiffies;
+ while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
+ ;
+}
+#endif
+
+/* Open/initialize the board. This is called (in the current kernel)
+ sometime after booting when the 'ifconfig' program is run.
+
+ This routine should set everything up anew at each open, even
+ registers that "should" only need to be set once at boot, so that
+ there is non-reboot way to recover if something goes wrong.
+ */
+static int
+net_open(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int i;
+
+ /* Disable the interrupt for now */
+ writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) & ~ENABLE_IRQ);
+
+ /* Grab the interrupt */
+ if (request_irq(dev->irq, net_interrupt, 0, "cs89x0", dev))
+ return -EAGAIN;
+
+ /* Set up the IRQ - Apparently magic */
+ if (lp->chip_type == CS8900)
+ writereg(dev, PP_CS8900_ISAINT, 0);
+ else
+ writereg(dev, PP_CS8920_ISAINT, 0);
+
+ /* set the Ethernet address */
+ for (i=0; i < ETH_ALEN/2; i++)
+ writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
+
+ /* Turn on both receive and transmit operations */
+ writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
+
+ /* Receive only error free packets addressed to this card */
+ lp->rx_mode = 0;
+ writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
+
+ lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
+
+ writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
+
+ writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
+ TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
+
+ writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
+ TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
+
+ /* now that we've got our act together, enable everything */
+ writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ);
+ netif_start_queue(dev);
+ return 0;
+}
+
+static int
+net_send_packet(struct sk_buff *skb, struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ unsigned long flags;
+
+ if (net_debug > 3)
+ printk("%s: sent %d byte packet of type %x\n",
+ dev->name, skb->len,
+ (skb->data[ETH_ALEN+ETH_ALEN] << 8)
+ | skb->data[ETH_ALEN+ETH_ALEN+1]);
+
+ /* keep the upload from being interrupted, since we
+ ask the chip to start transmitting before the
+ whole packet has been completely uploaded. */
+ local_irq_save(flags);
+ netif_stop_queue(dev);
+
+ /* initiate a transmit sequence */
+ writereg(dev, PP_TxCMD, lp->send_cmd);
+ writereg(dev, PP_TxLength, skb->len);
+
+ /* Test to see if the chip has allocated memory for the packet */
+ if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
+ /* Gasp! It hasn't. But that shouldn't happen since
+ we're waiting for TxOk, so return 1 and requeue this packet. */
+ local_irq_restore(flags);
+ return NETDEV_TX_BUSY;
+ }
+
+ /* Write the contents of the packet */
+ skb_copy_from_linear_data(skb, (void *)(dev->mem_start + PP_TxFrame),
+ skb->len+1);
+
+ local_irq_restore(flags);
+ dev_kfree_skb (skb);
+
+ return NETDEV_TX_OK;
+}
+
+/* The typical workload of the driver:
+ Handle the network interface interrupts. */
+static irqreturn_t net_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct net_local *lp;
+ int ioaddr, status;
+
+ if (dev == NULL) {
+ printk ("net_interrupt(): irq %d for unknown device.\n", irq);
+ return IRQ_NONE;
+ }
+
+ ioaddr = dev->base_addr;
+ lp = netdev_priv(dev);
+
+ /* we MUST read all the events out of the ISQ, otherwise we'll never
+ get interrupted again. As a consequence, we can't have any limit
+ on the number of times we loop in the interrupt handler. The
+ hardware guarantees that eventually we'll run out of events. Of
+ course, if you're on a slow machine, and packets are arriving
+ faster than you can read them off, you're screwed. Hasta la
+ vista, baby! */
+ while ((status = swab16(nubus_readw(dev->base_addr + ISQ_PORT)))) {
+ if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
+ switch(status & ISQ_EVENT_MASK) {
+ case ISQ_RECEIVER_EVENT:
+ /* Got a packet(s). */
+ net_rx(dev);
+ break;
+ case ISQ_TRANSMITTER_EVENT:
+ dev->stats.tx_packets++;
+ netif_wake_queue(dev);
+ if ((status & TX_OK) == 0)
+ dev->stats.tx_errors++;
+ if (status & TX_LOST_CRS)
+ dev->stats.tx_carrier_errors++;
+ if (status & TX_SQE_ERROR)
+ dev->stats.tx_heartbeat_errors++;
+ if (status & TX_LATE_COL)
+ dev->stats.tx_window_errors++;
+ if (status & TX_16_COL)
+ dev->stats.tx_aborted_errors++;
+ break;
+ case ISQ_BUFFER_EVENT:
+ if (status & READY_FOR_TX) {
+ /* we tried to transmit a packet earlier,
+ but inexplicably ran out of buffers.
+ That shouldn't happen since we only ever
+ load one packet. Shrug. Do the right
+ thing anyway. */
+ netif_wake_queue(dev);
+ }
+ if (status & TX_UNDERRUN) {
+ if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
+ lp->send_underrun++;
+ if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
+ else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
+ }
+ break;
+ case ISQ_RX_MISS_EVENT:
+ dev->stats.rx_missed_errors += (status >> 6);
+ break;
+ case ISQ_TX_COL_EVENT:
+ dev->stats.collisions += (status >> 6);
+ break;
+ }
+ }
+ return IRQ_HANDLED;
+}
+
+/* We have a good packet(s), get it/them out of the buffers. */
+static void
+net_rx(struct net_device *dev)
+{
+ struct sk_buff *skb;
+ int status, length;
+
+ status = readreg(dev, PP_RxStatus);
+ if ((status & RX_OK) == 0) {
+ dev->stats.rx_errors++;
+ if (status & RX_RUNT)
+ dev->stats.rx_length_errors++;
+ if (status & RX_EXTRA_DATA)
+ dev->stats.rx_length_errors++;
+ if ((status & RX_CRC_ERROR) &&
+ !(status & (RX_EXTRA_DATA|RX_RUNT)))
+ /* per str 172 */
+ dev->stats.rx_crc_errors++;
+ if (status & RX_DRIBBLE)
+ dev->stats.rx_frame_errors++;
+ return;
+ }
+
+ length = readreg(dev, PP_RxLength);
+ /* Malloc up new buffer. */
+ skb = alloc_skb(length, GFP_ATOMIC);
+ if (skb == NULL) {
+ printk("%s: Memory squeeze, dropping packet.\n", dev->name);
+ dev->stats.rx_dropped++;
+ return;
+ }
+ skb_put(skb, length);
+
+ skb_copy_to_linear_data(skb, (void *)(dev->mem_start + PP_RxFrame),
+ length);
+
+ if (net_debug > 3)printk("%s: received %d byte packet of type %x\n",
+ dev->name, length,
+ (skb->data[ETH_ALEN+ETH_ALEN] << 8)
+ | skb->data[ETH_ALEN+ETH_ALEN+1]);
+
+ skb->protocol=eth_type_trans(skb,dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += length;
+}
+
+/* The inverse routine to net_open(). */
+static int
+net_close(struct net_device *dev)
+{
+
+ writereg(dev, PP_RxCFG, 0);
+ writereg(dev, PP_TxCFG, 0);
+ writereg(dev, PP_BufCFG, 0);
+ writereg(dev, PP_BusCTL, 0);
+
+ netif_stop_queue(dev);
+
+ free_irq(dev->irq, dev);
+
+ /* Update the statistics here. */
+
+ return 0;
+
+}
+
+/* Get the current statistics. This may be called with the card open or
+ closed. */
+static struct net_device_stats *
+net_get_stats(struct net_device *dev)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ /* Update the statistics from the device registers. */
+ dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
+ dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
+ local_irq_restore(flags);
+
+ return &dev->stats;
+}
+
+static void set_multicast_list(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+
+ if(dev->flags&IFF_PROMISC)
+ {
+ lp->rx_mode = RX_ALL_ACCEPT;
+ } else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) {
+ /* The multicast-accept list is initialized to accept-all, and we
+ rely on higher-level filtering for now. */
+ lp->rx_mode = RX_MULTCAST_ACCEPT;
+ }
+ else
+ lp->rx_mode = 0;
+
+ writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
+
+ /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
+ writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
+ (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
+}
+
+
+static int set_mac_address(struct net_device *dev, void *addr)
+{
+ int i;
+ printk("%s: Setting MAC address to ", dev->name);
+ for (i = 0; i < 6; i++)
+ printk(" %2.2x", dev->dev_addr[i] = ((unsigned char *)addr)[i]);
+ printk(".\n");
+ /* set the Ethernet address */
+ for (i=0; i < ETH_ALEN/2; i++)
+ writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
+
+ return 0;
+}
+
+#ifdef MODULE
+
+static struct net_device *dev_cs89x0;
+static int debug;
+
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "CS89[02]0 debug level (0-5)");
+MODULE_LICENSE("GPL");
+
+int __init
+init_module(void)
+{
+ net_debug = debug;
+ dev_cs89x0 = mac89x0_probe(-1);
+ if (IS_ERR(dev_cs89x0)) {
+ printk(KERN_WARNING "mac89x0.c: No card found\n");
+ return PTR_ERR(dev_cs89x0);
+ }
+ return 0;
+}
+
+void
+cleanup_module(void)
+{
+ unregister_netdev(dev_cs89x0);
+ nubus_writew(0, dev_cs89x0->base_addr + ADD_PORT);
+ free_netdev(dev_cs89x0);
+}
+#endif /* MODULE */
--- /dev/null
+/*
+ * Network device driver for the MACE ethernet controller on
+ * Apple Powermacs. Assumes it's under a DBDMA controller.
+ *
+ * Copyright (C) 1996 Paul Mackerras.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/crc32.h>
+#include <linux/spinlock.h>
+#include <linux/bitrev.h>
+#include <linux/slab.h>
+#include <asm/prom.h>
+#include <asm/dbdma.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/macio.h>
+
+#include "mace.h"
+
+static int port_aaui = -1;
+
+#define N_RX_RING 8
+#define N_TX_RING 6
+#define MAX_TX_ACTIVE 1
+#define NCMDS_TX 1 /* dma commands per element in tx ring */
+#define RX_BUFLEN (ETH_FRAME_LEN + 8)
+#define TX_TIMEOUT HZ /* 1 second */
+
+/* Chip rev needs workaround on HW & multicast addr change */
+#define BROKEN_ADDRCHG_REV 0x0941
+
+/* Bits in transmit DMA status */
+#define TX_DMA_ERR 0x80
+
+struct mace_data {
+ volatile struct mace __iomem *mace;
+ volatile struct dbdma_regs __iomem *tx_dma;
+ int tx_dma_intr;
+ volatile struct dbdma_regs __iomem *rx_dma;
+ int rx_dma_intr;
+ volatile struct dbdma_cmd *tx_cmds; /* xmit dma command list */
+ volatile struct dbdma_cmd *rx_cmds; /* recv dma command list */
+ struct sk_buff *rx_bufs[N_RX_RING];
+ int rx_fill;
+ int rx_empty;
+ struct sk_buff *tx_bufs[N_TX_RING];
+ int tx_fill;
+ int tx_empty;
+ unsigned char maccc;
+ unsigned char tx_fullup;
+ unsigned char tx_active;
+ unsigned char tx_bad_runt;
+ struct timer_list tx_timeout;
+ int timeout_active;
+ int port_aaui;
+ int chipid;
+ struct macio_dev *mdev;
+ spinlock_t lock;
+};
+
+/*
+ * Number of bytes of private data per MACE: allow enough for
+ * the rx and tx dma commands plus a branch dma command each,
+ * and another 16 bytes to allow us to align the dma command
+ * buffers on a 16 byte boundary.
+ */
+#define PRIV_BYTES (sizeof(struct mace_data) \
+ + (N_RX_RING + NCMDS_TX * N_TX_RING + 3) * sizeof(struct dbdma_cmd))
+
+static int mace_open(struct net_device *dev);
+static int mace_close(struct net_device *dev);
+static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev);
+static void mace_set_multicast(struct net_device *dev);
+static void mace_reset(struct net_device *dev);
+static int mace_set_address(struct net_device *dev, void *addr);
+static irqreturn_t mace_interrupt(int irq, void *dev_id);
+static irqreturn_t mace_txdma_intr(int irq, void *dev_id);
+static irqreturn_t mace_rxdma_intr(int irq, void *dev_id);
+static void mace_set_timeout(struct net_device *dev);
+static void mace_tx_timeout(unsigned long data);
+static inline void dbdma_reset(volatile struct dbdma_regs __iomem *dma);
+static inline void mace_clean_rings(struct mace_data *mp);
+static void __mace_set_address(struct net_device *dev, void *addr);
+
+/*
+ * If we can't get a skbuff when we need it, we use this area for DMA.
+ */
+static unsigned char *dummy_buf;
+
+static const struct net_device_ops mace_netdev_ops = {
+ .ndo_open = mace_open,
+ .ndo_stop = mace_close,
+ .ndo_start_xmit = mace_xmit_start,
+ .ndo_set_multicast_list = mace_set_multicast,
+ .ndo_set_mac_address = mace_set_address,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static int __devinit mace_probe(struct macio_dev *mdev, const struct of_device_id *match)
+{
+ struct device_node *mace = macio_get_of_node(mdev);
+ struct net_device *dev;
+ struct mace_data *mp;
+ const unsigned char *addr;
+ int j, rev, rc = -EBUSY;
+
+ if (macio_resource_count(mdev) != 3 || macio_irq_count(mdev) != 3) {
+ printk(KERN_ERR "can't use MACE %s: need 3 addrs and 3 irqs\n",
+ mace->full_name);
+ return -ENODEV;
+ }
+
+ addr = of_get_property(mace, "mac-address", NULL);
+ if (addr == NULL) {
+ addr = of_get_property(mace, "local-mac-address", NULL);
+ if (addr == NULL) {
+ printk(KERN_ERR "Can't get mac-address for MACE %s\n",
+ mace->full_name);
+ return -ENODEV;
+ }
+ }
+
+ /*
+ * lazy allocate the driver-wide dummy buffer. (Note that we
+ * never have more than one MACE in the system anyway)
+ */
+ if (dummy_buf == NULL) {
+ dummy_buf = kmalloc(RX_BUFLEN+2, GFP_KERNEL);
+ if (dummy_buf == NULL) {
+ printk(KERN_ERR "MACE: couldn't allocate dummy buffer\n");
+ return -ENOMEM;
+ }
+ }
+
+ if (macio_request_resources(mdev, "mace")) {
+ printk(KERN_ERR "MACE: can't request IO resources !\n");
+ return -EBUSY;
+ }
+
+ dev = alloc_etherdev(PRIV_BYTES);
+ if (!dev) {
+ printk(KERN_ERR "MACE: can't allocate ethernet device !\n");
+ rc = -ENOMEM;
+ goto err_release;
+ }
+ SET_NETDEV_DEV(dev, &mdev->ofdev.dev);
+
+ mp = netdev_priv(dev);
+ mp->mdev = mdev;
+ macio_set_drvdata(mdev, dev);
+
+ dev->base_addr = macio_resource_start(mdev, 0);
+ mp->mace = ioremap(dev->base_addr, 0x1000);
+ if (mp->mace == NULL) {
+ printk(KERN_ERR "MACE: can't map IO resources !\n");
+ rc = -ENOMEM;
+ goto err_free;
+ }
+ dev->irq = macio_irq(mdev, 0);
+
+ rev = addr[0] == 0 && addr[1] == 0xA0;
+ for (j = 0; j < 6; ++j) {
+ dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j];
+ }
+ mp->chipid = (in_8(&mp->mace->chipid_hi) << 8) |
+ in_8(&mp->mace->chipid_lo);
+
+
+ mp = netdev_priv(dev);
+ mp->maccc = ENXMT | ENRCV;
+
+ mp->tx_dma = ioremap(macio_resource_start(mdev, 1), 0x1000);
+ if (mp->tx_dma == NULL) {
+ printk(KERN_ERR "MACE: can't map TX DMA resources !\n");
+ rc = -ENOMEM;
+ goto err_unmap_io;
+ }
+ mp->tx_dma_intr = macio_irq(mdev, 1);
+
+ mp->rx_dma = ioremap(macio_resource_start(mdev, 2), 0x1000);
+ if (mp->rx_dma == NULL) {
+ printk(KERN_ERR "MACE: can't map RX DMA resources !\n");
+ rc = -ENOMEM;
+ goto err_unmap_tx_dma;
+ }
+ mp->rx_dma_intr = macio_irq(mdev, 2);
+
+ mp->tx_cmds = (volatile struct dbdma_cmd *) DBDMA_ALIGN(mp + 1);
+ mp->rx_cmds = mp->tx_cmds + NCMDS_TX * N_TX_RING + 1;
+
+ memset((char *) mp->tx_cmds, 0,
+ (NCMDS_TX*N_TX_RING + N_RX_RING + 2) * sizeof(struct dbdma_cmd));
+ init_timer(&mp->tx_timeout);
+ spin_lock_init(&mp->lock);
+ mp->timeout_active = 0;
+
+ if (port_aaui >= 0)
+ mp->port_aaui = port_aaui;
+ else {
+ /* Apple Network Server uses the AAUI port */
+ if (of_machine_is_compatible("AAPL,ShinerESB"))
+ mp->port_aaui = 1;
+ else {
+#ifdef CONFIG_MACE_AAUI_PORT
+ mp->port_aaui = 1;
+#else
+ mp->port_aaui = 0;
+#endif
+ }
+ }
+
+ dev->netdev_ops = &mace_netdev_ops;
+
+ /*
+ * Most of what is below could be moved to mace_open()
+ */
+ mace_reset(dev);
+
+ rc = request_irq(dev->irq, mace_interrupt, 0, "MACE", dev);
+ if (rc) {
+ printk(KERN_ERR "MACE: can't get irq %d\n", dev->irq);
+ goto err_unmap_rx_dma;
+ }
+ rc = request_irq(mp->tx_dma_intr, mace_txdma_intr, 0, "MACE-txdma", dev);
+ if (rc) {
+ printk(KERN_ERR "MACE: can't get irq %d\n", mp->tx_dma_intr);
+ goto err_free_irq;
+ }
+ rc = request_irq(mp->rx_dma_intr, mace_rxdma_intr, 0, "MACE-rxdma", dev);
+ if (rc) {
+ printk(KERN_ERR "MACE: can't get irq %d\n", mp->rx_dma_intr);
+ goto err_free_tx_irq;
+ }
+
+ rc = register_netdev(dev);
+ if (rc) {
+ printk(KERN_ERR "MACE: Cannot register net device, aborting.\n");
+ goto err_free_rx_irq;
+ }
+
+ printk(KERN_INFO "%s: MACE at %pM, chip revision %d.%d\n",
+ dev->name, dev->dev_addr,
+ mp->chipid >> 8, mp->chipid & 0xff);
+
+ return 0;
+
+ err_free_rx_irq:
+ free_irq(macio_irq(mdev, 2), dev);
+ err_free_tx_irq:
+ free_irq(macio_irq(mdev, 1), dev);
+ err_free_irq:
+ free_irq(macio_irq(mdev, 0), dev);
+ err_unmap_rx_dma:
+ iounmap(mp->rx_dma);
+ err_unmap_tx_dma:
+ iounmap(mp->tx_dma);
+ err_unmap_io:
+ iounmap(mp->mace);
+ err_free:
+ free_netdev(dev);
+ err_release:
+ macio_release_resources(mdev);
+
+ return rc;
+}
+
+static int __devexit mace_remove(struct macio_dev *mdev)
+{
+ struct net_device *dev = macio_get_drvdata(mdev);
+ struct mace_data *mp;
+
+ BUG_ON(dev == NULL);
+
+ macio_set_drvdata(mdev, NULL);
+
+ mp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+
+ free_irq(dev->irq, dev);
+ free_irq(mp->tx_dma_intr, dev);
+ free_irq(mp->rx_dma_intr, dev);
+
+ iounmap(mp->rx_dma);
+ iounmap(mp->tx_dma);
+ iounmap(mp->mace);
+
+ free_netdev(dev);
+
+ macio_release_resources(mdev);
+
+ return 0;
+}
+
+static void dbdma_reset(volatile struct dbdma_regs __iomem *dma)
+{
+ int i;
+
+ out_le32(&dma->control, (WAKE|FLUSH|PAUSE|RUN) << 16);
+
+ /*
+ * Yes this looks peculiar, but apparently it needs to be this
+ * way on some machines.
+ */
+ for (i = 200; i > 0; --i)
+ if (ld_le32(&dma->control) & RUN)
+ udelay(1);
+}
+
+static void mace_reset(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace __iomem *mb = mp->mace;
+ int i;
+
+ /* soft-reset the chip */
+ i = 200;
+ while (--i) {
+ out_8(&mb->biucc, SWRST);
+ if (in_8(&mb->biucc) & SWRST) {
+ udelay(10);
+ continue;
+ }
+ break;
+ }
+ if (!i) {
+ printk(KERN_ERR "mace: cannot reset chip!\n");
+ return;
+ }
+
+ out_8(&mb->imr, 0xff); /* disable all intrs for now */
+ i = in_8(&mb->ir);
+ out_8(&mb->maccc, 0); /* turn off tx, rx */
+
+ out_8(&mb->biucc, XMTSP_64);
+ out_8(&mb->utr, RTRD);
+ out_8(&mb->fifocc, RCVFW_32 | XMTFW_16 | XMTFWU | RCVFWU | XMTBRST);
+ out_8(&mb->xmtfc, AUTO_PAD_XMIT); /* auto-pad short frames */
+ out_8(&mb->rcvfc, 0);
+
+ /* load up the hardware address */
+ __mace_set_address(dev, dev->dev_addr);
+
+ /* clear the multicast filter */
+ if (mp->chipid == BROKEN_ADDRCHG_REV)
+ out_8(&mb->iac, LOGADDR);
+ else {
+ out_8(&mb->iac, ADDRCHG | LOGADDR);
+ while ((in_8(&mb->iac) & ADDRCHG) != 0)
+ ;
+ }
+ for (i = 0; i < 8; ++i)
+ out_8(&mb->ladrf, 0);
+
+ /* done changing address */
+ if (mp->chipid != BROKEN_ADDRCHG_REV)
+ out_8(&mb->iac, 0);
+
+ if (mp->port_aaui)
+ out_8(&mb->plscc, PORTSEL_AUI + ENPLSIO);
+ else
+ out_8(&mb->plscc, PORTSEL_GPSI + ENPLSIO);
+}
+
+static void __mace_set_address(struct net_device *dev, void *addr)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace __iomem *mb = mp->mace;
+ unsigned char *p = addr;
+ int i;
+
+ /* load up the hardware address */
+ if (mp->chipid == BROKEN_ADDRCHG_REV)
+ out_8(&mb->iac, PHYADDR);
+ else {
+ out_8(&mb->iac, ADDRCHG | PHYADDR);
+ while ((in_8(&mb->iac) & ADDRCHG) != 0)
+ ;
+ }
+ for (i = 0; i < 6; ++i)
+ out_8(&mb->padr, dev->dev_addr[i] = p[i]);
+ if (mp->chipid != BROKEN_ADDRCHG_REV)
+ out_8(&mb->iac, 0);
+}
+
+static int mace_set_address(struct net_device *dev, void *addr)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace __iomem *mb = mp->mace;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mp->lock, flags);
+
+ __mace_set_address(dev, addr);
+
+ /* note: setting ADDRCHG clears ENRCV */
+ out_8(&mb->maccc, mp->maccc);
+
+ spin_unlock_irqrestore(&mp->lock, flags);
+ return 0;
+}
+
+static inline void mace_clean_rings(struct mace_data *mp)
+{
+ int i;
+
+ /* free some skb's */
+ for (i = 0; i < N_RX_RING; ++i) {
+ if (mp->rx_bufs[i] != NULL) {
+ dev_kfree_skb(mp->rx_bufs[i]);
+ mp->rx_bufs[i] = NULL;
+ }
+ }
+ for (i = mp->tx_empty; i != mp->tx_fill; ) {
+ dev_kfree_skb(mp->tx_bufs[i]);
+ if (++i >= N_TX_RING)
+ i = 0;
+ }
+}
+
+static int mace_open(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace __iomem *mb = mp->mace;
+ volatile struct dbdma_regs __iomem *rd = mp->rx_dma;
+ volatile struct dbdma_regs __iomem *td = mp->tx_dma;
+ volatile struct dbdma_cmd *cp;
+ int i;
+ struct sk_buff *skb;
+ unsigned char *data;
+
+ /* reset the chip */
+ mace_reset(dev);
+
+ /* initialize list of sk_buffs for receiving and set up recv dma */
+ mace_clean_rings(mp);
+ memset((char *)mp->rx_cmds, 0, N_RX_RING * sizeof(struct dbdma_cmd));
+ cp = mp->rx_cmds;
+ for (i = 0; i < N_RX_RING - 1; ++i) {
+ skb = dev_alloc_skb(RX_BUFLEN + 2);
+ if (!skb) {
+ data = dummy_buf;
+ } else {
+ skb_reserve(skb, 2); /* so IP header lands on 4-byte bdry */
+ data = skb->data;
+ }
+ mp->rx_bufs[i] = skb;
+ st_le16(&cp->req_count, RX_BUFLEN);
+ st_le16(&cp->command, INPUT_LAST + INTR_ALWAYS);
+ st_le32(&cp->phy_addr, virt_to_bus(data));
+ cp->xfer_status = 0;
+ ++cp;
+ }
+ mp->rx_bufs[i] = NULL;
+ st_le16(&cp->command, DBDMA_STOP);
+ mp->rx_fill = i;
+ mp->rx_empty = 0;
+
+ /* Put a branch back to the beginning of the receive command list */
+ ++cp;
+ st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
+ st_le32(&cp->cmd_dep, virt_to_bus(mp->rx_cmds));
+
+ /* start rx dma */
+ out_le32(&rd->control, (RUN|PAUSE|FLUSH|WAKE) << 16); /* clear run bit */
+ out_le32(&rd->cmdptr, virt_to_bus(mp->rx_cmds));
+ out_le32(&rd->control, (RUN << 16) | RUN);
+
+ /* put a branch at the end of the tx command list */
+ cp = mp->tx_cmds + NCMDS_TX * N_TX_RING;
+ st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
+ st_le32(&cp->cmd_dep, virt_to_bus(mp->tx_cmds));
+
+ /* reset tx dma */
+ out_le32(&td->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
+ out_le32(&td->cmdptr, virt_to_bus(mp->tx_cmds));
+ mp->tx_fill = 0;
+ mp->tx_empty = 0;
+ mp->tx_fullup = 0;
+ mp->tx_active = 0;
+ mp->tx_bad_runt = 0;
+
+ /* turn it on! */
+ out_8(&mb->maccc, mp->maccc);
+ /* enable all interrupts except receive interrupts */
+ out_8(&mb->imr, RCVINT);
+
+ return 0;
+}
+
+static int mace_close(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace __iomem *mb = mp->mace;
+ volatile struct dbdma_regs __iomem *rd = mp->rx_dma;
+ volatile struct dbdma_regs __iomem *td = mp->tx_dma;
+
+ /* disable rx and tx */
+ out_8(&mb->maccc, 0);
+ out_8(&mb->imr, 0xff); /* disable all intrs */
+
+ /* disable rx and tx dma */
+ st_le32(&rd->control, (RUN|PAUSE|FLUSH|WAKE) << 16); /* clear run bit */
+ st_le32(&td->control, (RUN|PAUSE|FLUSH|WAKE) << 16); /* clear run bit */
+
+ mace_clean_rings(mp);
+
+ return 0;
+}
+
+static inline void mace_set_timeout(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+
+ if (mp->timeout_active)
+ del_timer(&mp->tx_timeout);
+ mp->tx_timeout.expires = jiffies + TX_TIMEOUT;
+ mp->tx_timeout.function = mace_tx_timeout;
+ mp->tx_timeout.data = (unsigned long) dev;
+ add_timer(&mp->tx_timeout);
+ mp->timeout_active = 1;
+}
+
+static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct dbdma_regs __iomem *td = mp->tx_dma;
+ volatile struct dbdma_cmd *cp, *np;
+ unsigned long flags;
+ int fill, next, len;
+
+ /* see if there's a free slot in the tx ring */
+ spin_lock_irqsave(&mp->lock, flags);
+ fill = mp->tx_fill;
+ next = fill + 1;
+ if (next >= N_TX_RING)
+ next = 0;
+ if (next == mp->tx_empty) {
+ netif_stop_queue(dev);
+ mp->tx_fullup = 1;
+ spin_unlock_irqrestore(&mp->lock, flags);
+ return NETDEV_TX_BUSY; /* can't take it at the moment */
+ }
+ spin_unlock_irqrestore(&mp->lock, flags);
+
+ /* partially fill in the dma command block */
+ len = skb->len;
+ if (len > ETH_FRAME_LEN) {
+ printk(KERN_DEBUG "mace: xmit frame too long (%d)\n", len);
+ len = ETH_FRAME_LEN;
+ }
+ mp->tx_bufs[fill] = skb;
+ cp = mp->tx_cmds + NCMDS_TX * fill;
+ st_le16(&cp->req_count, len);
+ st_le32(&cp->phy_addr, virt_to_bus(skb->data));
+
+ np = mp->tx_cmds + NCMDS_TX * next;
+ out_le16(&np->command, DBDMA_STOP);
+
+ /* poke the tx dma channel */
+ spin_lock_irqsave(&mp->lock, flags);
+ mp->tx_fill = next;
+ if (!mp->tx_bad_runt && mp->tx_active < MAX_TX_ACTIVE) {
+ out_le16(&cp->xfer_status, 0);
+ out_le16(&cp->command, OUTPUT_LAST);
+ out_le32(&td->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
+ ++mp->tx_active;
+ mace_set_timeout(dev);
+ }
+ if (++next >= N_TX_RING)
+ next = 0;
+ if (next == mp->tx_empty)
+ netif_stop_queue(dev);
+ spin_unlock_irqrestore(&mp->lock, flags);
+
+ return NETDEV_TX_OK;
+}
+
+static void mace_set_multicast(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace __iomem *mb = mp->mace;
+ int i;
+ u32 crc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mp->lock, flags);
+ mp->maccc &= ~PROM;
+ if (dev->flags & IFF_PROMISC) {
+ mp->maccc |= PROM;
+ } else {
+ unsigned char multicast_filter[8];
+ struct netdev_hw_addr *ha;
+
+ if (dev->flags & IFF_ALLMULTI) {
+ for (i = 0; i < 8; i++)
+ multicast_filter[i] = 0xff;
+ } else {
+ for (i = 0; i < 8; i++)
+ multicast_filter[i] = 0;
+ netdev_for_each_mc_addr(ha, dev) {
+ crc = ether_crc_le(6, ha->addr);
+ i = crc >> 26; /* bit number in multicast_filter */
+ multicast_filter[i >> 3] |= 1 << (i & 7);
+ }
+ }
+#if 0
+ printk("Multicast filter :");
+ for (i = 0; i < 8; i++)
+ printk("%02x ", multicast_filter[i]);
+ printk("\n");
+#endif
+
+ if (mp->chipid == BROKEN_ADDRCHG_REV)
+ out_8(&mb->iac, LOGADDR);
+ else {
+ out_8(&mb->iac, ADDRCHG | LOGADDR);
+ while ((in_8(&mb->iac) & ADDRCHG) != 0)
+ ;
+ }
+ for (i = 0; i < 8; ++i)
+ out_8(&mb->ladrf, multicast_filter[i]);
+ if (mp->chipid != BROKEN_ADDRCHG_REV)
+ out_8(&mb->iac, 0);
+ }
+ /* reset maccc */
+ out_8(&mb->maccc, mp->maccc);
+ spin_unlock_irqrestore(&mp->lock, flags);
+}
+
+static void mace_handle_misc_intrs(struct mace_data *mp, int intr, struct net_device *dev)
+{
+ volatile struct mace __iomem *mb = mp->mace;
+ static int mace_babbles, mace_jabbers;
+
+ if (intr & MPCO)
+ dev->stats.rx_missed_errors += 256;
+ dev->stats.rx_missed_errors += in_8(&mb->mpc); /* reading clears it */
+ if (intr & RNTPCO)
+ dev->stats.rx_length_errors += 256;
+ dev->stats.rx_length_errors += in_8(&mb->rntpc); /* reading clears it */
+ if (intr & CERR)
+ ++dev->stats.tx_heartbeat_errors;
+ if (intr & BABBLE)
+ if (mace_babbles++ < 4)
+ printk(KERN_DEBUG "mace: babbling transmitter\n");
+ if (intr & JABBER)
+ if (mace_jabbers++ < 4)
+ printk(KERN_DEBUG "mace: jabbering transceiver\n");
+}
+
+static irqreturn_t mace_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace __iomem *mb = mp->mace;
+ volatile struct dbdma_regs __iomem *td = mp->tx_dma;
+ volatile struct dbdma_cmd *cp;
+ int intr, fs, i, stat, x;
+ int xcount, dstat;
+ unsigned long flags;
+ /* static int mace_last_fs, mace_last_xcount; */
+
+ spin_lock_irqsave(&mp->lock, flags);
+ intr = in_8(&mb->ir); /* read interrupt register */
+ in_8(&mb->xmtrc); /* get retries */
+ mace_handle_misc_intrs(mp, intr, dev);
+
+ i = mp->tx_empty;
+ while (in_8(&mb->pr) & XMTSV) {
+ del_timer(&mp->tx_timeout);
+ mp->timeout_active = 0;
+ /*
+ * Clear any interrupt indication associated with this status
+ * word. This appears to unlatch any error indication from
+ * the DMA controller.
+ */
+ intr = in_8(&mb->ir);
+ if (intr != 0)
+ mace_handle_misc_intrs(mp, intr, dev);
+ if (mp->tx_bad_runt) {
+ fs = in_8(&mb->xmtfs);
+ mp->tx_bad_runt = 0;
+ out_8(&mb->xmtfc, AUTO_PAD_XMIT);
+ continue;
+ }
+ dstat = ld_le32(&td->status);
+ /* stop DMA controller */
+ out_le32(&td->control, RUN << 16);
+ /*
+ * xcount is the number of complete frames which have been
+ * written to the fifo but for which status has not been read.
+ */
+ xcount = (in_8(&mb->fifofc) >> XMTFC_SH) & XMTFC_MASK;
+ if (xcount == 0 || (dstat & DEAD)) {
+ /*
+ * If a packet was aborted before the DMA controller has
+ * finished transferring it, it seems that there are 2 bytes
+ * which are stuck in some buffer somewhere. These will get
+ * transmitted as soon as we read the frame status (which
+ * reenables the transmit data transfer request). Turning
+ * off the DMA controller and/or resetting the MACE doesn't
+ * help. So we disable auto-padding and FCS transmission
+ * so the two bytes will only be a runt packet which should
+ * be ignored by other stations.
+ */
+ out_8(&mb->xmtfc, DXMTFCS);
+ }
+ fs = in_8(&mb->xmtfs);
+ if ((fs & XMTSV) == 0) {
+ printk(KERN_ERR "mace: xmtfs not valid! (fs=%x xc=%d ds=%x)\n",
+ fs, xcount, dstat);
+ mace_reset(dev);
+ /*
+ * XXX mace likes to hang the machine after a xmtfs error.
+ * This is hard to reproduce, reseting *may* help
+ */
+ }
+ cp = mp->tx_cmds + NCMDS_TX * i;
+ stat = ld_le16(&cp->xfer_status);
+ if ((fs & (UFLO|LCOL|LCAR|RTRY)) || (dstat & DEAD) || xcount == 0) {
+ /*
+ * Check whether there were in fact 2 bytes written to
+ * the transmit FIFO.
+ */
+ udelay(1);
+ x = (in_8(&mb->fifofc) >> XMTFC_SH) & XMTFC_MASK;
+ if (x != 0) {
+ /* there were two bytes with an end-of-packet indication */
+ mp->tx_bad_runt = 1;
+ mace_set_timeout(dev);
+ } else {
+ /*
+ * Either there weren't the two bytes buffered up, or they
+ * didn't have an end-of-packet indication.
+ * We flush the transmit FIFO just in case (by setting the
+ * XMTFWU bit with the transmitter disabled).
+ */
+ out_8(&mb->maccc, in_8(&mb->maccc) & ~ENXMT);
+ out_8(&mb->fifocc, in_8(&mb->fifocc) | XMTFWU);
+ udelay(1);
+ out_8(&mb->maccc, in_8(&mb->maccc) | ENXMT);
+ out_8(&mb->xmtfc, AUTO_PAD_XMIT);
+ }
+ }
+ /* dma should have finished */
+ if (i == mp->tx_fill) {
+ printk(KERN_DEBUG "mace: tx ring ran out? (fs=%x xc=%d ds=%x)\n",
+ fs, xcount, dstat);
+ continue;
+ }
+ /* Update stats */
+ if (fs & (UFLO|LCOL|LCAR|RTRY)) {
+ ++dev->stats.tx_errors;
+ if (fs & LCAR)
+ ++dev->stats.tx_carrier_errors;
+ if (fs & (UFLO|LCOL|RTRY))
+ ++dev->stats.tx_aborted_errors;
+ } else {
+ dev->stats.tx_bytes += mp->tx_bufs[i]->len;
+ ++dev->stats.tx_packets;
+ }
+ dev_kfree_skb_irq(mp->tx_bufs[i]);
+ --mp->tx_active;
+ if (++i >= N_TX_RING)
+ i = 0;
+#if 0
+ mace_last_fs = fs;
+ mace_last_xcount = xcount;
+#endif
+ }
+
+ if (i != mp->tx_empty) {
+ mp->tx_fullup = 0;
+ netif_wake_queue(dev);
+ }
+ mp->tx_empty = i;
+ i += mp->tx_active;
+ if (i >= N_TX_RING)
+ i -= N_TX_RING;
+ if (!mp->tx_bad_runt && i != mp->tx_fill && mp->tx_active < MAX_TX_ACTIVE) {
+ do {
+ /* set up the next one */
+ cp = mp->tx_cmds + NCMDS_TX * i;
+ out_le16(&cp->xfer_status, 0);
+ out_le16(&cp->command, OUTPUT_LAST);
+ ++mp->tx_active;
+ if (++i >= N_TX_RING)
+ i = 0;
+ } while (i != mp->tx_fill && mp->tx_active < MAX_TX_ACTIVE);
+ out_le32(&td->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
+ mace_set_timeout(dev);
+ }
+ spin_unlock_irqrestore(&mp->lock, flags);
+ return IRQ_HANDLED;
+}
+
+static void mace_tx_timeout(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace __iomem *mb = mp->mace;
+ volatile struct dbdma_regs __iomem *td = mp->tx_dma;
+ volatile struct dbdma_regs __iomem *rd = mp->rx_dma;
+ volatile struct dbdma_cmd *cp;
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&mp->lock, flags);
+ mp->timeout_active = 0;
+ if (mp->tx_active == 0 && !mp->tx_bad_runt)
+ goto out;
+
+ /* update various counters */
+ mace_handle_misc_intrs(mp, in_8(&mb->ir), dev);
+
+ cp = mp->tx_cmds + NCMDS_TX * mp->tx_empty;
+
+ /* turn off both tx and rx and reset the chip */
+ out_8(&mb->maccc, 0);
+ printk(KERN_ERR "mace: transmit timeout - resetting\n");
+ dbdma_reset(td);
+ mace_reset(dev);
+
+ /* restart rx dma */
+ cp = bus_to_virt(ld_le32(&rd->cmdptr));
+ dbdma_reset(rd);
+ out_le16(&cp->xfer_status, 0);
+ out_le32(&rd->cmdptr, virt_to_bus(cp));
+ out_le32(&rd->control, (RUN << 16) | RUN);
+
+ /* fix up the transmit side */
+ i = mp->tx_empty;
+ mp->tx_active = 0;
+ ++dev->stats.tx_errors;
+ if (mp->tx_bad_runt) {
+ mp->tx_bad_runt = 0;
+ } else if (i != mp->tx_fill) {
+ dev_kfree_skb(mp->tx_bufs[i]);
+ if (++i >= N_TX_RING)
+ i = 0;
+ mp->tx_empty = i;
+ }
+ mp->tx_fullup = 0;
+ netif_wake_queue(dev);
+ if (i != mp->tx_fill) {
+ cp = mp->tx_cmds + NCMDS_TX * i;
+ out_le16(&cp->xfer_status, 0);
+ out_le16(&cp->command, OUTPUT_LAST);
+ out_le32(&td->cmdptr, virt_to_bus(cp));
+ out_le32(&td->control, (RUN << 16) | RUN);
+ ++mp->tx_active;
+ mace_set_timeout(dev);
+ }
+
+ /* turn it back on */
+ out_8(&mb->imr, RCVINT);
+ out_8(&mb->maccc, mp->maccc);
+
+out:
+ spin_unlock_irqrestore(&mp->lock, flags);
+}
+
+static irqreturn_t mace_txdma_intr(int irq, void *dev_id)
+{
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t mace_rxdma_intr(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct dbdma_regs __iomem *rd = mp->rx_dma;
+ volatile struct dbdma_cmd *cp, *np;
+ int i, nb, stat, next;
+ struct sk_buff *skb;
+ unsigned frame_status;
+ static int mace_lost_status;
+ unsigned char *data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mp->lock, flags);
+ for (i = mp->rx_empty; i != mp->rx_fill; ) {
+ cp = mp->rx_cmds + i;
+ stat = ld_le16(&cp->xfer_status);
+ if ((stat & ACTIVE) == 0) {
+ next = i + 1;
+ if (next >= N_RX_RING)
+ next = 0;
+ np = mp->rx_cmds + next;
+ if (next != mp->rx_fill &&
+ (ld_le16(&np->xfer_status) & ACTIVE) != 0) {
+ printk(KERN_DEBUG "mace: lost a status word\n");
+ ++mace_lost_status;
+ } else
+ break;
+ }
+ nb = ld_le16(&cp->req_count) - ld_le16(&cp->res_count);
+ out_le16(&cp->command, DBDMA_STOP);
+ /* got a packet, have a look at it */
+ skb = mp->rx_bufs[i];
+ if (!skb) {
+ ++dev->stats.rx_dropped;
+ } else if (nb > 8) {
+ data = skb->data;
+ frame_status = (data[nb-3] << 8) + data[nb-4];
+ if (frame_status & (RS_OFLO|RS_CLSN|RS_FRAMERR|RS_FCSERR)) {
+ ++dev->stats.rx_errors;
+ if (frame_status & RS_OFLO)
+ ++dev->stats.rx_over_errors;
+ if (frame_status & RS_FRAMERR)
+ ++dev->stats.rx_frame_errors;
+ if (frame_status & RS_FCSERR)
+ ++dev->stats.rx_crc_errors;
+ } else {
+ /* Mace feature AUTO_STRIP_RCV is on by default, dropping the
+ * FCS on frames with 802.3 headers. This means that Ethernet
+ * frames have 8 extra octets at the end, while 802.3 frames
+ * have only 4. We need to correctly account for this. */
+ if (*(unsigned short *)(data+12) < 1536) /* 802.3 header */
+ nb -= 4;
+ else /* Ethernet header; mace includes FCS */
+ nb -= 8;
+ skb_put(skb, nb);
+ skb->protocol = eth_type_trans(skb, dev);
+ dev->stats.rx_bytes += skb->len;
+ netif_rx(skb);
+ mp->rx_bufs[i] = NULL;
+ ++dev->stats.rx_packets;
+ }
+ } else {
+ ++dev->stats.rx_errors;
+ ++dev->stats.rx_length_errors;
+ }
+
+ /* advance to next */
+ if (++i >= N_RX_RING)
+ i = 0;
+ }
+ mp->rx_empty = i;
+
+ i = mp->rx_fill;
+ for (;;) {
+ next = i + 1;
+ if (next >= N_RX_RING)
+ next = 0;
+ if (next == mp->rx_empty)
+ break;
+ cp = mp->rx_cmds + i;
+ skb = mp->rx_bufs[i];
+ if (!skb) {
+ skb = dev_alloc_skb(RX_BUFLEN + 2);
+ if (skb) {
+ skb_reserve(skb, 2);
+ mp->rx_bufs[i] = skb;
+ }
+ }
+ st_le16(&cp->req_count, RX_BUFLEN);
+ data = skb? skb->data: dummy_buf;
+ st_le32(&cp->phy_addr, virt_to_bus(data));
+ out_le16(&cp->xfer_status, 0);
+ out_le16(&cp->command, INPUT_LAST + INTR_ALWAYS);
+#if 0
+ if ((ld_le32(&rd->status) & ACTIVE) != 0) {
+ out_le32(&rd->control, (PAUSE << 16) | PAUSE);
+ while ((in_le32(&rd->status) & ACTIVE) != 0)
+ ;
+ }
+#endif
+ i = next;
+ }
+ if (i != mp->rx_fill) {
+ out_le32(&rd->control, ((RUN|WAKE) << 16) | (RUN|WAKE));
+ mp->rx_fill = i;
+ }
+ spin_unlock_irqrestore(&mp->lock, flags);
+ return IRQ_HANDLED;
+}
+
+static struct of_device_id mace_match[] =
+{
+ {
+ .name = "mace",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE (of, mace_match);
+
+static struct macio_driver mace_driver =
+{
+ .driver = {
+ .name = "mace",
+ .owner = THIS_MODULE,
+ .of_match_table = mace_match,
+ },
+ .probe = mace_probe,
+ .remove = mace_remove,
+};
+
+
+static int __init mace_init(void)
+{
+ return macio_register_driver(&mace_driver);
+}
+
+static void __exit mace_cleanup(void)
+{
+ macio_unregister_driver(&mace_driver);
+
+ kfree(dummy_buf);
+ dummy_buf = NULL;
+}
+
+MODULE_AUTHOR("Paul Mackerras");
+MODULE_DESCRIPTION("PowerMac MACE driver.");
+module_param(port_aaui, int, 0);
+MODULE_PARM_DESC(port_aaui, "MACE uses AAUI port (0-1)");
+MODULE_LICENSE("GPL");
+
+module_init(mace_init);
+module_exit(mace_cleanup);
--- /dev/null
+/*
+ * mace.h - definitions for the registers in the Am79C940 MACE
+ * (Medium Access Control for Ethernet) controller.
+ *
+ * Copyright (C) 1996 Paul Mackerras.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#define REG(x) volatile unsigned char x; char x ## _pad[15]
+
+struct mace {
+ REG(rcvfifo); /* receive FIFO */
+ REG(xmtfifo); /* transmit FIFO */
+ REG(xmtfc); /* transmit frame control */
+ REG(xmtfs); /* transmit frame status */
+ REG(xmtrc); /* transmit retry count */
+ REG(rcvfc); /* receive frame control */
+ REG(rcvfs); /* receive frame status (4 bytes) */
+ REG(fifofc); /* FIFO frame count */
+ REG(ir); /* interrupt register */
+ REG(imr); /* interrupt mask register */
+ REG(pr); /* poll register */
+ REG(biucc); /* bus interface unit config control */
+ REG(fifocc); /* FIFO configuration control */
+ REG(maccc); /* medium access control config control */
+ REG(plscc); /* phys layer signalling config control */
+ REG(phycc); /* physical configuration control */
+ REG(chipid_lo); /* chip ID, lsb */
+ REG(chipid_hi); /* chip ID, msb */
+ REG(iac); /* internal address config */
+ REG(reg19);
+ REG(ladrf); /* logical address filter (8 bytes) */
+ REG(padr); /* physical address (6 bytes) */
+ REG(reg22);
+ REG(reg23);
+ REG(mpc); /* missed packet count (clears when read) */
+ REG(reg25);
+ REG(rntpc); /* runt packet count (clears when read) */
+ REG(rcvcc); /* recv collision count (clears when read) */
+ REG(reg28);
+ REG(utr); /* user test reg */
+ REG(reg30);
+ REG(reg31);
+};
+
+/* Bits in XMTFC */
+#define DRTRY 0x80 /* don't retry transmission after collision */
+#define DXMTFCS 0x08 /* don't append FCS to transmitted frame */
+#define AUTO_PAD_XMIT 0x01 /* auto-pad short packets on transmission */
+
+/* Bits in XMTFS: only valid when XMTSV is set in PR and XMTFS */
+#define XMTSV 0x80 /* transmit status (i.e. XMTFS) valid */
+#define UFLO 0x40 /* underflow - xmit fifo ran dry */
+#define LCOL 0x20 /* late collision (transmission aborted) */
+#define MORE 0x10 /* 2 or more retries needed to xmit frame */
+#define ONE 0x08 /* 1 retry needed to xmit frame */
+#define DEFER 0x04 /* MACE had to defer xmission (enet busy) */
+#define LCAR 0x02 /* loss of carrier (transmission aborted) */
+#define RTRY 0x01 /* too many retries (transmission aborted) */
+
+/* Bits in XMTRC: only valid when XMTSV is set in PR (and XMTFS) */
+#define EXDEF 0x80 /* had to defer for excessive time */
+#define RETRY_MASK 0x0f /* number of retries (0 - 15) */
+
+/* Bits in RCVFC */
+#define LLRCV 0x08 /* low latency receive: early DMA request */
+#define M_RBAR 0x04 /* sets function of EAM/R pin */
+#define AUTO_STRIP_RCV 0x01 /* auto-strip short LLC frames on recv */
+
+/*
+ * Bits in RCVFS. After a frame is received, four bytes of status
+ * are automatically read from this register and appended to the frame
+ * data in memory. These are:
+ * Byte 0 and 1: message byte count and frame status
+ * Byte 2: runt packet count
+ * Byte 3: receive collision count
+ */
+#define RS_OFLO 0x8000 /* receive FIFO overflowed */
+#define RS_CLSN 0x4000 /* received frame suffered (late) collision */
+#define RS_FRAMERR 0x2000 /* framing error flag */
+#define RS_FCSERR 0x1000 /* frame had FCS error */
+#define RS_COUNT 0x0fff /* mask for byte count field */
+
+/* Bits (fields) in FIFOFC */
+#define RCVFC_SH 4 /* receive frame count in FIFO */
+#define RCVFC_MASK 0x0f
+#define XMTFC_SH 0 /* transmit frame count in FIFO */
+#define XMTFC_MASK 0x0f
+
+/*
+ * Bits in IR and IMR. The IR clears itself when read.
+ * Setting a bit in the IMR will disable the corresponding interrupt.
+ */
+#define JABBER 0x80 /* jabber error - 10baseT xmission too long */
+#define BABBLE 0x40 /* babble - xmitter xmitting for too long */
+#define CERR 0x20 /* collision err - no SQE test (heartbeat) */
+#define RCVCCO 0x10 /* RCVCC overflow */
+#define RNTPCO 0x08 /* RNTPC overflow */
+#define MPCO 0x04 /* MPC overflow */
+#define RCVINT 0x02 /* receive interrupt */
+#define XMTINT 0x01 /* transmitter interrupt */
+
+/* Bits in PR */
+#define XMTSV 0x80 /* XMTFS valid (same as in XMTFS) */
+#define TDTREQ 0x40 /* set when xmit fifo is requesting data */
+#define RDTREQ 0x20 /* set when recv fifo requests data xfer */
+
+/* Bits in BIUCC */
+#define BSWP 0x40 /* byte swap, i.e. big-endian bus */
+#define XMTSP_4 0x00 /* start xmitting when 4 bytes in FIFO */
+#define XMTSP_16 0x10 /* start xmitting when 16 bytes in FIFO */
+#define XMTSP_64 0x20 /* start xmitting when 64 bytes in FIFO */
+#define XMTSP_112 0x30 /* start xmitting when 112 bytes in FIFO */
+#define SWRST 0x01 /* software reset */
+
+/* Bits in FIFOCC */
+#define XMTFW_8 0x00 /* xmit fifo watermark = 8 words free */
+#define XMTFW_16 0x40 /* 16 words free */
+#define XMTFW_32 0x80 /* 32 words free */
+#define RCVFW_16 0x00 /* recv fifo watermark = 16 bytes avail */
+#define RCVFW_32 0x10 /* 32 bytes avail */
+#define RCVFW_64 0x20 /* 64 bytes avail */
+#define XMTFWU 0x08 /* xmit fifo watermark update enable */
+#define RCVFWU 0x04 /* recv fifo watermark update enable */
+#define XMTBRST 0x02 /* enable transmit burst mode */
+#define RCVBRST 0x01 /* enable receive burst mode */
+
+/* Bits in MACCC */
+#define PROM 0x80 /* promiscuous mode */
+#define DXMT2PD 0x40 /* disable xmit two-part deferral algorithm */
+#define EMBA 0x20 /* enable modified backoff algorithm */
+#define DRCVPA 0x08 /* disable receiving physical address */
+#define DRCVBC 0x04 /* disable receiving broadcasts */
+#define ENXMT 0x02 /* enable transmitter */
+#define ENRCV 0x01 /* enable receiver */
+
+/* Bits in PLSCC */
+#define XMTSEL 0x08 /* select DO+/DO- state when idle */
+#define PORTSEL_AUI 0x00 /* select AUI port */
+#define PORTSEL_10T 0x02 /* select 10Base-T port */
+#define PORTSEL_DAI 0x04 /* select DAI port */
+#define PORTSEL_GPSI 0x06 /* select GPSI port */
+#define ENPLSIO 0x01 /* enable optional PLS I/O pins */
+
+/* Bits in PHYCC */
+#define LNKFL 0x80 /* reports 10Base-T link failure */
+#define DLNKTST 0x40 /* disable 10Base-T link test */
+#define REVPOL 0x20 /* 10Base-T receiver polarity reversed */
+#define DAPC 0x10 /* disable auto receiver polarity correction */
+#define LRT 0x08 /* low receive threshold for long links */
+#define ASEL 0x04 /* auto-select AUI or 10Base-T port */
+#define RWAKE 0x02 /* remote wake function */
+#define AWAKE 0x01 /* auto wake function */
+
+/* Bits in IAC */
+#define ADDRCHG 0x80 /* request address change */
+#define PHYADDR 0x04 /* access physical address */
+#define LOGADDR 0x02 /* access multicast filter */
+
+/* Bits in UTR */
+#define RTRE 0x80 /* reserved test register enable. DON'T SET. */
+#define RTRD 0x40 /* reserved test register disable. Sticky */
+#define RPAC 0x20 /* accept runt packets */
+#define FCOLL 0x10 /* force collision */
+#define RCVFCSE 0x08 /* receive FCS enable */
+#define LOOP_NONE 0x00 /* no loopback */
+#define LOOP_EXT 0x02 /* external loopback */
+#define LOOP_INT 0x04 /* internal loopback, excludes MENDEC */
+#define LOOP_MENDEC 0x06 /* internal loopback, includes MENDEC */
--- /dev/null
+/*
+ * Driver for the Macintosh 68K onboard MACE controller with PSC
+ * driven DMA. The MACE driver code is derived from mace.c. The
+ * Mac68k theory of operation is courtesy of the MacBSD wizards.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Copyright (C) 1996 Paul Mackerras.
+ * Copyright (C) 1998 Alan Cox <alan@lxorguk.ukuu.org.uk>
+ *
+ * Modified heavily by Joshua M. Thompson based on Dave Huang's NetBSD driver
+ *
+ * Copyright (C) 2007 Finn Thain
+ *
+ * Converted to DMA API, converted to unified driver model,
+ * sync'd some routines with mace.c and fixed various bugs.
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/crc32.h>
+#include <linux/bitrev.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/gfp.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/macintosh.h>
+#include <asm/macints.h>
+#include <asm/mac_psc.h>
+#include <asm/page.h>
+#include "mace.h"
+
+static char mac_mace_string[] = "macmace";
+
+#define N_TX_BUFF_ORDER 0
+#define N_TX_RING (1 << N_TX_BUFF_ORDER)
+#define N_RX_BUFF_ORDER 3
+#define N_RX_RING (1 << N_RX_BUFF_ORDER)
+
+#define TX_TIMEOUT HZ
+
+#define MACE_BUFF_SIZE 0x800
+
+/* Chip rev needs workaround on HW & multicast addr change */
+#define BROKEN_ADDRCHG_REV 0x0941
+
+/* The MACE is simply wired down on a Mac68K box */
+
+#define MACE_BASE (void *)(0x50F1C000)
+#define MACE_PROM (void *)(0x50F08001)
+
+struct mace_data {
+ volatile struct mace *mace;
+ unsigned char *tx_ring;
+ dma_addr_t tx_ring_phys;
+ unsigned char *rx_ring;
+ dma_addr_t rx_ring_phys;
+ int dma_intr;
+ int rx_slot, rx_tail;
+ int tx_slot, tx_sloti, tx_count;
+ int chipid;
+ struct device *device;
+};
+
+struct mace_frame {
+ u8 rcvcnt;
+ u8 pad1;
+ u8 rcvsts;
+ u8 pad2;
+ u8 rntpc;
+ u8 pad3;
+ u8 rcvcc;
+ u8 pad4;
+ u32 pad5;
+ u32 pad6;
+ u8 data[1];
+ /* And frame continues.. */
+};
+
+#define PRIV_BYTES sizeof(struct mace_data)
+
+static int mace_open(struct net_device *dev);
+static int mace_close(struct net_device *dev);
+static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev);
+static void mace_set_multicast(struct net_device *dev);
+static int mace_set_address(struct net_device *dev, void *addr);
+static void mace_reset(struct net_device *dev);
+static irqreturn_t mace_interrupt(int irq, void *dev_id);
+static irqreturn_t mace_dma_intr(int irq, void *dev_id);
+static void mace_tx_timeout(struct net_device *dev);
+static void __mace_set_address(struct net_device *dev, void *addr);
+
+/*
+ * Load a receive DMA channel with a base address and ring length
+ */
+
+static void mace_load_rxdma_base(struct net_device *dev, int set)
+{
+ struct mace_data *mp = netdev_priv(dev);
+
+ psc_write_word(PSC_ENETRD_CMD + set, 0x0100);
+ psc_write_long(PSC_ENETRD_ADDR + set, (u32) mp->rx_ring_phys);
+ psc_write_long(PSC_ENETRD_LEN + set, N_RX_RING);
+ psc_write_word(PSC_ENETRD_CMD + set, 0x9800);
+ mp->rx_tail = 0;
+}
+
+/*
+ * Reset the receive DMA subsystem
+ */
+
+static void mace_rxdma_reset(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mace = mp->mace;
+ u8 maccc = mace->maccc;
+
+ mace->maccc = maccc & ~ENRCV;
+
+ psc_write_word(PSC_ENETRD_CTL, 0x8800);
+ mace_load_rxdma_base(dev, 0x00);
+ psc_write_word(PSC_ENETRD_CTL, 0x0400);
+
+ psc_write_word(PSC_ENETRD_CTL, 0x8800);
+ mace_load_rxdma_base(dev, 0x10);
+ psc_write_word(PSC_ENETRD_CTL, 0x0400);
+
+ mace->maccc = maccc;
+ mp->rx_slot = 0;
+
+ psc_write_word(PSC_ENETRD_CMD + PSC_SET0, 0x9800);
+ psc_write_word(PSC_ENETRD_CMD + PSC_SET1, 0x9800);
+}
+
+/*
+ * Reset the transmit DMA subsystem
+ */
+
+static void mace_txdma_reset(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mace = mp->mace;
+ u8 maccc;
+
+ psc_write_word(PSC_ENETWR_CTL, 0x8800);
+
+ maccc = mace->maccc;
+ mace->maccc = maccc & ~ENXMT;
+
+ mp->tx_slot = mp->tx_sloti = 0;
+ mp->tx_count = N_TX_RING;
+
+ psc_write_word(PSC_ENETWR_CTL, 0x0400);
+ mace->maccc = maccc;
+}
+
+/*
+ * Disable DMA
+ */
+
+static void mace_dma_off(struct net_device *dev)
+{
+ psc_write_word(PSC_ENETRD_CTL, 0x8800);
+ psc_write_word(PSC_ENETRD_CTL, 0x1000);
+ psc_write_word(PSC_ENETRD_CMD + PSC_SET0, 0x1100);
+ psc_write_word(PSC_ENETRD_CMD + PSC_SET1, 0x1100);
+
+ psc_write_word(PSC_ENETWR_CTL, 0x8800);
+ psc_write_word(PSC_ENETWR_CTL, 0x1000);
+ psc_write_word(PSC_ENETWR_CMD + PSC_SET0, 0x1100);
+ psc_write_word(PSC_ENETWR_CMD + PSC_SET1, 0x1100);
+}
+
+static const struct net_device_ops mace_netdev_ops = {
+ .ndo_open = mace_open,
+ .ndo_stop = mace_close,
+ .ndo_start_xmit = mace_xmit_start,
+ .ndo_tx_timeout = mace_tx_timeout,
+ .ndo_set_multicast_list = mace_set_multicast,
+ .ndo_set_mac_address = mace_set_address,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+/*
+ * Not really much of a probe. The hardware table tells us if this
+ * model of Macintrash has a MACE (AV macintoshes)
+ */
+
+static int __devinit mace_probe(struct platform_device *pdev)
+{
+ int j;
+ struct mace_data *mp;
+ unsigned char *addr;
+ struct net_device *dev;
+ unsigned char checksum = 0;
+ static int found = 0;
+ int err;
+
+ if (found || macintosh_config->ether_type != MAC_ETHER_MACE)
+ return -ENODEV;
+
+ found = 1; /* prevent 'finding' one on every device probe */
+
+ dev = alloc_etherdev(PRIV_BYTES);
+ if (!dev)
+ return -ENOMEM;
+
+ mp = netdev_priv(dev);
+
+ mp->device = &pdev->dev;
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ dev->base_addr = (u32)MACE_BASE;
+ mp->mace = MACE_BASE;
+
+ dev->irq = IRQ_MAC_MACE;
+ mp->dma_intr = IRQ_MAC_MACE_DMA;
+
+ mp->chipid = mp->mace->chipid_hi << 8 | mp->mace->chipid_lo;
+
+ /*
+ * The PROM contains 8 bytes which total 0xFF when XOR'd
+ * together. Due to the usual peculiar apple brain damage
+ * the bytes are spaced out in a strange boundary and the
+ * bits are reversed.
+ */
+
+ addr = (void *)MACE_PROM;
+
+ for (j = 0; j < 6; ++j) {
+ u8 v = bitrev8(addr[j<<4]);
+ checksum ^= v;
+ dev->dev_addr[j] = v;
+ }
+ for (; j < 8; ++j) {
+ checksum ^= bitrev8(addr[j<<4]);
+ }
+
+ if (checksum != 0xFF) {
+ free_netdev(dev);
+ return -ENODEV;
+ }
+
+ dev->netdev_ops = &mace_netdev_ops;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ printk(KERN_INFO "%s: 68K MACE, hardware address %pM\n",
+ dev->name, dev->dev_addr);
+
+ err = register_netdev(dev);
+ if (!err)
+ return 0;
+
+ free_netdev(dev);
+ return err;
+}
+
+/*
+ * Reset the chip.
+ */
+
+static void mace_reset(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mb = mp->mace;
+ int i;
+
+ /* soft-reset the chip */
+ i = 200;
+ while (--i) {
+ mb->biucc = SWRST;
+ if (mb->biucc & SWRST) {
+ udelay(10);
+ continue;
+ }
+ break;
+ }
+ if (!i) {
+ printk(KERN_ERR "macmace: cannot reset chip!\n");
+ return;
+ }
+
+ mb->maccc = 0; /* turn off tx, rx */
+ mb->imr = 0xFF; /* disable all intrs for now */
+ i = mb->ir;
+
+ mb->biucc = XMTSP_64;
+ mb->utr = RTRD;
+ mb->fifocc = XMTFW_8 | RCVFW_64 | XMTFWU | RCVFWU;
+
+ mb->xmtfc = AUTO_PAD_XMIT; /* auto-pad short frames */
+ mb->rcvfc = 0;
+
+ /* load up the hardware address */
+ __mace_set_address(dev, dev->dev_addr);
+
+ /* clear the multicast filter */
+ if (mp->chipid == BROKEN_ADDRCHG_REV)
+ mb->iac = LOGADDR;
+ else {
+ mb->iac = ADDRCHG | LOGADDR;
+ while ((mb->iac & ADDRCHG) != 0)
+ ;
+ }
+ for (i = 0; i < 8; ++i)
+ mb->ladrf = 0;
+
+ /* done changing address */
+ if (mp->chipid != BROKEN_ADDRCHG_REV)
+ mb->iac = 0;
+
+ mb->plscc = PORTSEL_AUI;
+}
+
+/*
+ * Load the address on a mace controller.
+ */
+
+static void __mace_set_address(struct net_device *dev, void *addr)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mb = mp->mace;
+ unsigned char *p = addr;
+ int i;
+
+ /* load up the hardware address */
+ if (mp->chipid == BROKEN_ADDRCHG_REV)
+ mb->iac = PHYADDR;
+ else {
+ mb->iac = ADDRCHG | PHYADDR;
+ while ((mb->iac & ADDRCHG) != 0)
+ ;
+ }
+ for (i = 0; i < 6; ++i)
+ mb->padr = dev->dev_addr[i] = p[i];
+ if (mp->chipid != BROKEN_ADDRCHG_REV)
+ mb->iac = 0;
+}
+
+static int mace_set_address(struct net_device *dev, void *addr)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mb = mp->mace;
+ unsigned long flags;
+ u8 maccc;
+
+ local_irq_save(flags);
+
+ maccc = mb->maccc;
+
+ __mace_set_address(dev, addr);
+
+ mb->maccc = maccc;
+
+ local_irq_restore(flags);
+
+ return 0;
+}
+
+/*
+ * Open the Macintosh MACE. Most of this is playing with the DMA
+ * engine. The ethernet chip is quite friendly.
+ */
+
+static int mace_open(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mb = mp->mace;
+
+ /* reset the chip */
+ mace_reset(dev);
+
+ if (request_irq(dev->irq, mace_interrupt, 0, dev->name, dev)) {
+ printk(KERN_ERR "%s: can't get irq %d\n", dev->name, dev->irq);
+ return -EAGAIN;
+ }
+ if (request_irq(mp->dma_intr, mace_dma_intr, 0, dev->name, dev)) {
+ printk(KERN_ERR "%s: can't get irq %d\n", dev->name, mp->dma_intr);
+ free_irq(dev->irq, dev);
+ return -EAGAIN;
+ }
+
+ /* Allocate the DMA ring buffers */
+
+ mp->tx_ring = dma_alloc_coherent(mp->device,
+ N_TX_RING * MACE_BUFF_SIZE,
+ &mp->tx_ring_phys, GFP_KERNEL);
+ if (mp->tx_ring == NULL) {
+ printk(KERN_ERR "%s: unable to allocate DMA tx buffers\n", dev->name);
+ goto out1;
+ }
+
+ mp->rx_ring = dma_alloc_coherent(mp->device,
+ N_RX_RING * MACE_BUFF_SIZE,
+ &mp->rx_ring_phys, GFP_KERNEL);
+ if (mp->rx_ring == NULL) {
+ printk(KERN_ERR "%s: unable to allocate DMA rx buffers\n", dev->name);
+ goto out2;
+ }
+
+ mace_dma_off(dev);
+
+ /* Not sure what these do */
+
+ psc_write_word(PSC_ENETWR_CTL, 0x9000);
+ psc_write_word(PSC_ENETRD_CTL, 0x9000);
+ psc_write_word(PSC_ENETWR_CTL, 0x0400);
+ psc_write_word(PSC_ENETRD_CTL, 0x0400);
+
+ mace_rxdma_reset(dev);
+ mace_txdma_reset(dev);
+
+ /* turn it on! */
+ mb->maccc = ENXMT | ENRCV;
+ /* enable all interrupts except receive interrupts */
+ mb->imr = RCVINT;
+ return 0;
+
+out2:
+ dma_free_coherent(mp->device, N_TX_RING * MACE_BUFF_SIZE,
+ mp->tx_ring, mp->tx_ring_phys);
+out1:
+ free_irq(dev->irq, dev);
+ free_irq(mp->dma_intr, dev);
+ return -ENOMEM;
+}
+
+/*
+ * Shut down the mace and its interrupt channel
+ */
+
+static int mace_close(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mb = mp->mace;
+
+ mb->maccc = 0; /* disable rx and tx */
+ mb->imr = 0xFF; /* disable all irqs */
+ mace_dma_off(dev); /* disable rx and tx dma */
+
+ return 0;
+}
+
+/*
+ * Transmit a frame
+ */
+
+static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ unsigned long flags;
+
+ /* Stop the queue since there's only the one buffer */
+
+ local_irq_save(flags);
+ netif_stop_queue(dev);
+ if (!mp->tx_count) {
+ printk(KERN_ERR "macmace: tx queue running but no free buffers.\n");
+ local_irq_restore(flags);
+ return NETDEV_TX_BUSY;
+ }
+ mp->tx_count--;
+ local_irq_restore(flags);
+
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+
+ /* We need to copy into our xmit buffer to take care of alignment and caching issues */
+ skb_copy_from_linear_data(skb, mp->tx_ring, skb->len);
+
+ /* load the Tx DMA and fire it off */
+
+ psc_write_long(PSC_ENETWR_ADDR + mp->tx_slot, (u32) mp->tx_ring_phys);
+ psc_write_long(PSC_ENETWR_LEN + mp->tx_slot, skb->len);
+ psc_write_word(PSC_ENETWR_CMD + mp->tx_slot, 0x9800);
+
+ mp->tx_slot ^= 0x10;
+
+ dev_kfree_skb(skb);
+
+ return NETDEV_TX_OK;
+}
+
+static void mace_set_multicast(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mb = mp->mace;
+ int i;
+ u32 crc;
+ u8 maccc;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ maccc = mb->maccc;
+ mb->maccc &= ~PROM;
+
+ if (dev->flags & IFF_PROMISC) {
+ mb->maccc |= PROM;
+ } else {
+ unsigned char multicast_filter[8];
+ struct netdev_hw_addr *ha;
+
+ if (dev->flags & IFF_ALLMULTI) {
+ for (i = 0; i < 8; i++) {
+ multicast_filter[i] = 0xFF;
+ }
+ } else {
+ for (i = 0; i < 8; i++)
+ multicast_filter[i] = 0;
+ netdev_for_each_mc_addr(ha, dev) {
+ crc = ether_crc_le(6, ha->addr);
+ /* bit number in multicast_filter */
+ i = crc >> 26;
+ multicast_filter[i >> 3] |= 1 << (i & 7);
+ }
+ }
+
+ if (mp->chipid == BROKEN_ADDRCHG_REV)
+ mb->iac = LOGADDR;
+ else {
+ mb->iac = ADDRCHG | LOGADDR;
+ while ((mb->iac & ADDRCHG) != 0)
+ ;
+ }
+ for (i = 0; i < 8; ++i)
+ mb->ladrf = multicast_filter[i];
+ if (mp->chipid != BROKEN_ADDRCHG_REV)
+ mb->iac = 0;
+ }
+
+ mb->maccc = maccc;
+ local_irq_restore(flags);
+}
+
+static void mace_handle_misc_intrs(struct net_device *dev, int intr)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mb = mp->mace;
+ static int mace_babbles, mace_jabbers;
+
+ if (intr & MPCO)
+ dev->stats.rx_missed_errors += 256;
+ dev->stats.rx_missed_errors += mb->mpc; /* reading clears it */
+ if (intr & RNTPCO)
+ dev->stats.rx_length_errors += 256;
+ dev->stats.rx_length_errors += mb->rntpc; /* reading clears it */
+ if (intr & CERR)
+ ++dev->stats.tx_heartbeat_errors;
+ if (intr & BABBLE)
+ if (mace_babbles++ < 4)
+ printk(KERN_DEBUG "macmace: babbling transmitter\n");
+ if (intr & JABBER)
+ if (mace_jabbers++ < 4)
+ printk(KERN_DEBUG "macmace: jabbering transceiver\n");
+}
+
+static irqreturn_t mace_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mb = mp->mace;
+ int intr, fs;
+ unsigned long flags;
+
+ /* don't want the dma interrupt handler to fire */
+ local_irq_save(flags);
+
+ intr = mb->ir; /* read interrupt register */
+ mace_handle_misc_intrs(dev, intr);
+
+ if (intr & XMTINT) {
+ fs = mb->xmtfs;
+ if ((fs & XMTSV) == 0) {
+ printk(KERN_ERR "macmace: xmtfs not valid! (fs=%x)\n", fs);
+ mace_reset(dev);
+ /*
+ * XXX mace likes to hang the machine after a xmtfs error.
+ * This is hard to reproduce, reseting *may* help
+ */
+ }
+ /* dma should have finished */
+ if (!mp->tx_count) {
+ printk(KERN_DEBUG "macmace: tx ring ran out? (fs=%x)\n", fs);
+ }
+ /* Update stats */
+ if (fs & (UFLO|LCOL|LCAR|RTRY)) {
+ ++dev->stats.tx_errors;
+ if (fs & LCAR)
+ ++dev->stats.tx_carrier_errors;
+ else if (fs & (UFLO|LCOL|RTRY)) {
+ ++dev->stats.tx_aborted_errors;
+ if (mb->xmtfs & UFLO) {
+ printk(KERN_ERR "%s: DMA underrun.\n", dev->name);
+ dev->stats.tx_fifo_errors++;
+ mace_txdma_reset(dev);
+ }
+ }
+ }
+ }
+
+ if (mp->tx_count)
+ netif_wake_queue(dev);
+
+ local_irq_restore(flags);
+
+ return IRQ_HANDLED;
+}
+
+static void mace_tx_timeout(struct net_device *dev)
+{
+ struct mace_data *mp = netdev_priv(dev);
+ volatile struct mace *mb = mp->mace;
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ /* turn off both tx and rx and reset the chip */
+ mb->maccc = 0;
+ printk(KERN_ERR "macmace: transmit timeout - resetting\n");
+ mace_txdma_reset(dev);
+ mace_reset(dev);
+
+ /* restart rx dma */
+ mace_rxdma_reset(dev);
+
+ mp->tx_count = N_TX_RING;
+ netif_wake_queue(dev);
+
+ /* turn it on! */
+ mb->maccc = ENXMT | ENRCV;
+ /* enable all interrupts except receive interrupts */
+ mb->imr = RCVINT;
+
+ local_irq_restore(flags);
+}
+
+/*
+ * Handle a newly arrived frame
+ */
+
+static void mace_dma_rx_frame(struct net_device *dev, struct mace_frame *mf)
+{
+ struct sk_buff *skb;
+ unsigned int frame_status = mf->rcvsts;
+
+ if (frame_status & (RS_OFLO | RS_CLSN | RS_FRAMERR | RS_FCSERR)) {
+ dev->stats.rx_errors++;
+ if (frame_status & RS_OFLO) {
+ printk(KERN_DEBUG "%s: fifo overflow.\n", dev->name);
+ dev->stats.rx_fifo_errors++;
+ }
+ if (frame_status & RS_CLSN)
+ dev->stats.collisions++;
+ if (frame_status & RS_FRAMERR)
+ dev->stats.rx_frame_errors++;
+ if (frame_status & RS_FCSERR)
+ dev->stats.rx_crc_errors++;
+ } else {
+ unsigned int frame_length = mf->rcvcnt + ((frame_status & 0x0F) << 8 );
+
+ skb = dev_alloc_skb(frame_length + 2);
+ if (!skb) {
+ dev->stats.rx_dropped++;
+ return;
+ }
+ skb_reserve(skb, 2);
+ memcpy(skb_put(skb, frame_length), mf->data, frame_length);
+
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += frame_length;
+ }
+}
+
+/*
+ * The PSC has passed us a DMA interrupt event.
+ */
+
+static irqreturn_t mace_dma_intr(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct mace_data *mp = netdev_priv(dev);
+ int left, head;
+ u16 status;
+ u32 baka;
+
+ /* Not sure what this does */
+
+ while ((baka = psc_read_long(PSC_MYSTERY)) != psc_read_long(PSC_MYSTERY));
+ if (!(baka & 0x60000000)) return IRQ_NONE;
+
+ /*
+ * Process the read queue
+ */
+
+ status = psc_read_word(PSC_ENETRD_CTL);
+
+ if (status & 0x2000) {
+ mace_rxdma_reset(dev);
+ } else if (status & 0x0100) {
+ psc_write_word(PSC_ENETRD_CMD + mp->rx_slot, 0x1100);
+
+ left = psc_read_long(PSC_ENETRD_LEN + mp->rx_slot);
+ head = N_RX_RING - left;
+
+ /* Loop through the ring buffer and process new packages */
+
+ while (mp->rx_tail < head) {
+ mace_dma_rx_frame(dev, (struct mace_frame*) (mp->rx_ring
+ + (mp->rx_tail * MACE_BUFF_SIZE)));
+ mp->rx_tail++;
+ }
+
+ /* If we're out of buffers in this ring then switch to */
+ /* the other set, otherwise just reactivate this one. */
+
+ if (!left) {
+ mace_load_rxdma_base(dev, mp->rx_slot);
+ mp->rx_slot ^= 0x10;
+ } else {
+ psc_write_word(PSC_ENETRD_CMD + mp->rx_slot, 0x9800);
+ }
+ }
+
+ /*
+ * Process the write queue
+ */
+
+ status = psc_read_word(PSC_ENETWR_CTL);
+
+ if (status & 0x2000) {
+ mace_txdma_reset(dev);
+ } else if (status & 0x0100) {
+ psc_write_word(PSC_ENETWR_CMD + mp->tx_sloti, 0x0100);
+ mp->tx_sloti ^= 0x10;
+ mp->tx_count++;
+ }
+ return IRQ_HANDLED;
+}
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Macintosh MACE ethernet driver");
+MODULE_ALIAS("platform:macmace");
+
+static int __devexit mac_mace_device_remove (struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct mace_data *mp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+
+ free_irq(dev->irq, dev);
+ free_irq(IRQ_MAC_MACE_DMA, dev);
+
+ dma_free_coherent(mp->device, N_RX_RING * MACE_BUFF_SIZE,
+ mp->rx_ring, mp->rx_ring_phys);
+ dma_free_coherent(mp->device, N_TX_RING * MACE_BUFF_SIZE,
+ mp->tx_ring, mp->tx_ring_phys);
+
+ free_netdev(dev);
+
+ return 0;
+}
+
+static struct platform_driver mac_mace_driver = {
+ .probe = mace_probe,
+ .remove = __devexit_p(mac_mace_device_remove),
+ .driver = {
+ .name = mac_mace_string,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init mac_mace_init_module(void)
+{
+ if (!MACH_IS_MAC)
+ return -ENODEV;
+
+ return platform_driver_register(&mac_mace_driver);
+}
+
+static void __exit mac_mace_cleanup_module(void)
+{
+ platform_driver_unregister(&mac_mace_driver);
+}
+
+module_init(mac_mace_init_module);
+module_exit(mac_mace_cleanup_module);
+++ /dev/null
-/* mac89x0.c: A Crystal Semiconductor CS89[02]0 driver for linux. */
-/*
- Written 1996 by Russell Nelson, with reference to skeleton.c
- written 1993-1994 by Donald Becker.
-
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
-
- The author may be reached at nelson@crynwr.com, Crynwr
- Software, 11 Grant St., Potsdam, NY 13676
-
- Changelog:
-
- Mike Cruse : mcruse@cti-ltd.com
- : Changes for Linux 2.0 compatibility.
- : Added dev_id parameter in net_interrupt(),
- : request_irq() and free_irq(). Just NULL for now.
-
- Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
- : in net_open() and net_close() so kerneld would know
- : that the module is in use and wouldn't eject the
- : driver prematurely.
-
- Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
- : as an example. Disabled autoprobing in init_module(),
- : not a good thing to do to other devices while Linux
- : is running from all accounts.
-
- Alan Cox : Removed 1.2 support, added 2.1 extra counters.
-
- David Huggins-Daines <dhd@debian.org>
-
- Split this off into mac89x0.c, and gutted it of all parts which are
- not relevant to the existing CS8900 cards on the Macintosh
- (i.e. basically the Daynaport CS and LC cards). To be precise:
-
- * Removed all the media-detection stuff, because these cards are
- TP-only.
-
- * Lobotomized the ISA interrupt bogosity, because these cards use
- a hardwired NuBus interrupt and a magic ISAIRQ value in the card.
-
- * Basically eliminated everything not relevant to getting the
- cards minimally functioning on the Macintosh.
-
- I might add that these cards are badly designed even from the Mac
- standpoint, in that Dayna, in their infinite wisdom, used NuBus slot
- I/O space and NuBus interrupts for these cards, but neglected to
- provide anything even remotely resembling a NuBus ROM. Therefore we
- have to probe for them in a brain-damaged ISA-like fashion.
-
- Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 11/01/2001
- check kmalloc and release the allocated memory on failure in
- mac89x0_probe and in init_module
- use local_irq_{save,restore}(flags) in net_get_stat, not just
- local_irq_{dis,en}able()
-*/
-
-static char *version =
-"cs89x0.c:v1.02 11/26/96 Russell Nelson <nelson@crynwr.com>\n";
-
-/* ======================= configure the driver here ======================= */
-
-/* use 0 for production, 1 for verification, >2 for debug */
-#ifndef NET_DEBUG
-#define NET_DEBUG 0
-#endif
-
-/* ======================= end of configuration ======================= */
-
-
-/* Always include 'config.h' first in case the user wants to turn on
- or override something. */
-#include <linux/module.h>
-
-/*
- Sources:
-
- Crynwr packet driver epktisa.
-
- Crystal Semiconductor data sheets.
-
-*/
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/string.h>
-#include <linux/nubus.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/delay.h>
-#include <linux/bitops.h>
-#include <linux/gfp.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/hwtest.h>
-#include <asm/macints.h>
-
-#include "cs89x0.h"
-
-static unsigned int net_debug = NET_DEBUG;
-
-/* Information that need to be kept for each board. */
-struct net_local {
- int chip_type; /* one of: CS8900, CS8920, CS8920M */
- char chip_revision; /* revision letter of the chip ('A'...) */
- int send_cmd; /* the propercommand used to send a packet. */
- int rx_mode;
- int curr_rx_cfg;
- int send_underrun; /* keep track of how many underruns in a row we get */
- struct sk_buff *skb;
-};
-
-/* Index to functions, as function prototypes. */
-
-#if 0
-extern void reset_chip(struct net_device *dev);
-#endif
-static int net_open(struct net_device *dev);
-static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t net_interrupt(int irq, void *dev_id);
-static void set_multicast_list(struct net_device *dev);
-static void net_rx(struct net_device *dev);
-static int net_close(struct net_device *dev);
-static struct net_device_stats *net_get_stats(struct net_device *dev);
-static int set_mac_address(struct net_device *dev, void *addr);
-
-
-/* Example routines you must write ;->. */
-#define tx_done(dev) 1
-
-/* For reading/writing registers ISA-style */
-static inline int
-readreg_io(struct net_device *dev, int portno)
-{
- nubus_writew(swab16(portno), dev->base_addr + ADD_PORT);
- return swab16(nubus_readw(dev->base_addr + DATA_PORT));
-}
-
-static inline void
-writereg_io(struct net_device *dev, int portno, int value)
-{
- nubus_writew(swab16(portno), dev->base_addr + ADD_PORT);
- nubus_writew(swab16(value), dev->base_addr + DATA_PORT);
-}
-
-/* These are for reading/writing registers in shared memory */
-static inline int
-readreg(struct net_device *dev, int portno)
-{
- return swab16(nubus_readw(dev->mem_start + portno));
-}
-
-static inline void
-writereg(struct net_device *dev, int portno, int value)
-{
- nubus_writew(swab16(value), dev->mem_start + portno);
-}
-
-static const struct net_device_ops mac89x0_netdev_ops = {
- .ndo_open = net_open,
- .ndo_stop = net_close,
- .ndo_start_xmit = net_send_packet,
- .ndo_get_stats = net_get_stats,
- .ndo_set_multicast_list = set_multicast_list,
- .ndo_set_mac_address = set_mac_address,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
-};
-
-/* Probe for the CS8900 card in slot E. We won't bother looking
- anywhere else until we have a really good reason to do so. */
-struct net_device * __init mac89x0_probe(int unit)
-{
- struct net_device *dev;
- static int once_is_enough;
- struct net_local *lp;
- static unsigned version_printed;
- int i, slot;
- unsigned rev_type = 0;
- unsigned long ioaddr;
- unsigned short sig;
- int err = -ENODEV;
-
- if (!MACH_IS_MAC)
- return ERR_PTR(-ENODEV);
-
- dev = alloc_etherdev(sizeof(struct net_local));
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- if (unit >= 0) {
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- }
-
- if (once_is_enough)
- goto out;
- once_is_enough = 1;
-
- /* We might have to parameterize this later */
- slot = 0xE;
- /* Get out now if there's a real NuBus card in slot E */
- if (nubus_find_slot(slot, NULL) != NULL)
- goto out;
-
- /* The pseudo-ISA bits always live at offset 0x300 (gee,
- wonder why...) */
- ioaddr = (unsigned long)
- nubus_slot_addr(slot) | (((slot&0xf) << 20) + DEFAULTIOBASE);
- {
- unsigned long flags;
- int card_present;
-
- local_irq_save(flags);
- card_present = (hwreg_present((void*) ioaddr+4) &&
- hwreg_present((void*) ioaddr + DATA_PORT));
- local_irq_restore(flags);
-
- if (!card_present)
- goto out;
- }
-
- nubus_writew(0, ioaddr + ADD_PORT);
- sig = nubus_readw(ioaddr + DATA_PORT);
- if (sig != swab16(CHIP_EISA_ID_SIG))
- goto out;
-
- /* Initialize the net_device structure. */
- lp = netdev_priv(dev);
-
- /* Fill in the 'dev' fields. */
- dev->base_addr = ioaddr;
- dev->mem_start = (unsigned long)
- nubus_slot_addr(slot) | (((slot&0xf) << 20) + MMIOBASE);
- dev->mem_end = dev->mem_start + 0x1000;
-
- /* Turn on shared memory */
- writereg_io(dev, PP_BusCTL, MEMORY_ON);
-
- /* get the chip type */
- rev_type = readreg(dev, PRODUCT_ID_ADD);
- lp->chip_type = rev_type &~ REVISON_BITS;
- lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
-
- /* Check the chip type and revision in order to set the correct send command
- CS8920 revision C and CS8900 revision F can use the faster send. */
- lp->send_cmd = TX_AFTER_381;
- if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
- lp->send_cmd = TX_NOW;
- if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
- lp->send_cmd = TX_NOW;
-
- if (net_debug && version_printed++ == 0)
- printk(version);
-
- printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#8lx",
- dev->name,
- lp->chip_type==CS8900?'0':'2',
- lp->chip_type==CS8920M?"M":"",
- lp->chip_revision,
- dev->base_addr);
-
- /* Try to read the MAC address */
- if ((readreg(dev, PP_SelfST) & (EEPROM_PRESENT | EEPROM_OK)) == 0) {
- printk("\nmac89x0: No EEPROM, giving up now.\n");
- goto out1;
- } else {
- for (i = 0; i < ETH_ALEN; i += 2) {
- /* Big-endian (why??!) */
- unsigned short s = readreg(dev, PP_IA + i);
- dev->dev_addr[i] = s >> 8;
- dev->dev_addr[i+1] = s & 0xff;
- }
- }
-
- dev->irq = SLOT2IRQ(slot);
-
- /* print the IRQ and ethernet address. */
-
- printk(" IRQ %d ADDR %pM\n", dev->irq, dev->dev_addr);
-
- dev->netdev_ops = &mac89x0_netdev_ops;
-
- err = register_netdev(dev);
- if (err)
- goto out1;
- return NULL;
-out1:
- nubus_writew(0, dev->base_addr + ADD_PORT);
-out:
- free_netdev(dev);
- return ERR_PTR(err);
-}
-
-#if 0
-/* This is useful for something, but I don't know what yet. */
-void __init reset_chip(struct net_device *dev)
-{
- int reset_start_time;
-
- writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
-
- /* wait 30 ms */
- msleep_interruptible(30);
-
- /* Wait until the chip is reset */
- reset_start_time = jiffies;
- while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
- ;
-}
-#endif
-
-/* Open/initialize the board. This is called (in the current kernel)
- sometime after booting when the 'ifconfig' program is run.
-
- This routine should set everything up anew at each open, even
- registers that "should" only need to be set once at boot, so that
- there is non-reboot way to recover if something goes wrong.
- */
-static int
-net_open(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- int i;
-
- /* Disable the interrupt for now */
- writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) & ~ENABLE_IRQ);
-
- /* Grab the interrupt */
- if (request_irq(dev->irq, net_interrupt, 0, "cs89x0", dev))
- return -EAGAIN;
-
- /* Set up the IRQ - Apparently magic */
- if (lp->chip_type == CS8900)
- writereg(dev, PP_CS8900_ISAINT, 0);
- else
- writereg(dev, PP_CS8920_ISAINT, 0);
-
- /* set the Ethernet address */
- for (i=0; i < ETH_ALEN/2; i++)
- writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
-
- /* Turn on both receive and transmit operations */
- writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
-
- /* Receive only error free packets addressed to this card */
- lp->rx_mode = 0;
- writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
-
- lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
-
- writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
-
- writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
- TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
-
- writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
- TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
-
- /* now that we've got our act together, enable everything */
- writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ);
- netif_start_queue(dev);
- return 0;
-}
-
-static int
-net_send_packet(struct sk_buff *skb, struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- unsigned long flags;
-
- if (net_debug > 3)
- printk("%s: sent %d byte packet of type %x\n",
- dev->name, skb->len,
- (skb->data[ETH_ALEN+ETH_ALEN] << 8)
- | skb->data[ETH_ALEN+ETH_ALEN+1]);
-
- /* keep the upload from being interrupted, since we
- ask the chip to start transmitting before the
- whole packet has been completely uploaded. */
- local_irq_save(flags);
- netif_stop_queue(dev);
-
- /* initiate a transmit sequence */
- writereg(dev, PP_TxCMD, lp->send_cmd);
- writereg(dev, PP_TxLength, skb->len);
-
- /* Test to see if the chip has allocated memory for the packet */
- if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
- /* Gasp! It hasn't. But that shouldn't happen since
- we're waiting for TxOk, so return 1 and requeue this packet. */
- local_irq_restore(flags);
- return NETDEV_TX_BUSY;
- }
-
- /* Write the contents of the packet */
- skb_copy_from_linear_data(skb, (void *)(dev->mem_start + PP_TxFrame),
- skb->len+1);
-
- local_irq_restore(flags);
- dev_kfree_skb (skb);
-
- return NETDEV_TX_OK;
-}
-
-/* The typical workload of the driver:
- Handle the network interface interrupts. */
-static irqreturn_t net_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct net_local *lp;
- int ioaddr, status;
-
- if (dev == NULL) {
- printk ("net_interrupt(): irq %d for unknown device.\n", irq);
- return IRQ_NONE;
- }
-
- ioaddr = dev->base_addr;
- lp = netdev_priv(dev);
-
- /* we MUST read all the events out of the ISQ, otherwise we'll never
- get interrupted again. As a consequence, we can't have any limit
- on the number of times we loop in the interrupt handler. The
- hardware guarantees that eventually we'll run out of events. Of
- course, if you're on a slow machine, and packets are arriving
- faster than you can read them off, you're screwed. Hasta la
- vista, baby! */
- while ((status = swab16(nubus_readw(dev->base_addr + ISQ_PORT)))) {
- if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
- switch(status & ISQ_EVENT_MASK) {
- case ISQ_RECEIVER_EVENT:
- /* Got a packet(s). */
- net_rx(dev);
- break;
- case ISQ_TRANSMITTER_EVENT:
- dev->stats.tx_packets++;
- netif_wake_queue(dev);
- if ((status & TX_OK) == 0)
- dev->stats.tx_errors++;
- if (status & TX_LOST_CRS)
- dev->stats.tx_carrier_errors++;
- if (status & TX_SQE_ERROR)
- dev->stats.tx_heartbeat_errors++;
- if (status & TX_LATE_COL)
- dev->stats.tx_window_errors++;
- if (status & TX_16_COL)
- dev->stats.tx_aborted_errors++;
- break;
- case ISQ_BUFFER_EVENT:
- if (status & READY_FOR_TX) {
- /* we tried to transmit a packet earlier,
- but inexplicably ran out of buffers.
- That shouldn't happen since we only ever
- load one packet. Shrug. Do the right
- thing anyway. */
- netif_wake_queue(dev);
- }
- if (status & TX_UNDERRUN) {
- if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
- lp->send_underrun++;
- if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
- else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
- }
- break;
- case ISQ_RX_MISS_EVENT:
- dev->stats.rx_missed_errors += (status >> 6);
- break;
- case ISQ_TX_COL_EVENT:
- dev->stats.collisions += (status >> 6);
- break;
- }
- }
- return IRQ_HANDLED;
-}
-
-/* We have a good packet(s), get it/them out of the buffers. */
-static void
-net_rx(struct net_device *dev)
-{
- struct sk_buff *skb;
- int status, length;
-
- status = readreg(dev, PP_RxStatus);
- if ((status & RX_OK) == 0) {
- dev->stats.rx_errors++;
- if (status & RX_RUNT)
- dev->stats.rx_length_errors++;
- if (status & RX_EXTRA_DATA)
- dev->stats.rx_length_errors++;
- if ((status & RX_CRC_ERROR) &&
- !(status & (RX_EXTRA_DATA|RX_RUNT)))
- /* per str 172 */
- dev->stats.rx_crc_errors++;
- if (status & RX_DRIBBLE)
- dev->stats.rx_frame_errors++;
- return;
- }
-
- length = readreg(dev, PP_RxLength);
- /* Malloc up new buffer. */
- skb = alloc_skb(length, GFP_ATOMIC);
- if (skb == NULL) {
- printk("%s: Memory squeeze, dropping packet.\n", dev->name);
- dev->stats.rx_dropped++;
- return;
- }
- skb_put(skb, length);
-
- skb_copy_to_linear_data(skb, (void *)(dev->mem_start + PP_RxFrame),
- length);
-
- if (net_debug > 3)printk("%s: received %d byte packet of type %x\n",
- dev->name, length,
- (skb->data[ETH_ALEN+ETH_ALEN] << 8)
- | skb->data[ETH_ALEN+ETH_ALEN+1]);
-
- skb->protocol=eth_type_trans(skb,dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += length;
-}
-
-/* The inverse routine to net_open(). */
-static int
-net_close(struct net_device *dev)
-{
-
- writereg(dev, PP_RxCFG, 0);
- writereg(dev, PP_TxCFG, 0);
- writereg(dev, PP_BufCFG, 0);
- writereg(dev, PP_BusCTL, 0);
-
- netif_stop_queue(dev);
-
- free_irq(dev->irq, dev);
-
- /* Update the statistics here. */
-
- return 0;
-
-}
-
-/* Get the current statistics. This may be called with the card open or
- closed. */
-static struct net_device_stats *
-net_get_stats(struct net_device *dev)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- /* Update the statistics from the device registers. */
- dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
- dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
- local_irq_restore(flags);
-
- return &dev->stats;
-}
-
-static void set_multicast_list(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
-
- if(dev->flags&IFF_PROMISC)
- {
- lp->rx_mode = RX_ALL_ACCEPT;
- } else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) {
- /* The multicast-accept list is initialized to accept-all, and we
- rely on higher-level filtering for now. */
- lp->rx_mode = RX_MULTCAST_ACCEPT;
- }
- else
- lp->rx_mode = 0;
-
- writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
-
- /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
- writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
- (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
-}
-
-
-static int set_mac_address(struct net_device *dev, void *addr)
-{
- int i;
- printk("%s: Setting MAC address to ", dev->name);
- for (i = 0; i < 6; i++)
- printk(" %2.2x", dev->dev_addr[i] = ((unsigned char *)addr)[i]);
- printk(".\n");
- /* set the Ethernet address */
- for (i=0; i < ETH_ALEN/2; i++)
- writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
-
- return 0;
-}
-
-#ifdef MODULE
-
-static struct net_device *dev_cs89x0;
-static int debug;
-
-module_param(debug, int, 0);
-MODULE_PARM_DESC(debug, "CS89[02]0 debug level (0-5)");
-MODULE_LICENSE("GPL");
-
-int __init
-init_module(void)
-{
- net_debug = debug;
- dev_cs89x0 = mac89x0_probe(-1);
- if (IS_ERR(dev_cs89x0)) {
- printk(KERN_WARNING "mac89x0.c: No card found\n");
- return PTR_ERR(dev_cs89x0);
- }
- return 0;
-}
-
-void
-cleanup_module(void)
-{
- unregister_netdev(dev_cs89x0);
- nubus_writew(0, dev_cs89x0->base_addr + ADD_PORT);
- free_netdev(dev_cs89x0);
-}
-#endif /* MODULE */
+++ /dev/null
-/*
- * Network device driver for the MACE ethernet controller on
- * Apple Powermacs. Assumes it's under a DBDMA controller.
- *
- * Copyright (C) 1996 Paul Mackerras.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/delay.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/crc32.h>
-#include <linux/spinlock.h>
-#include <linux/bitrev.h>
-#include <linux/slab.h>
-#include <asm/prom.h>
-#include <asm/dbdma.h>
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/macio.h>
-
-#include "mace.h"
-
-static int port_aaui = -1;
-
-#define N_RX_RING 8
-#define N_TX_RING 6
-#define MAX_TX_ACTIVE 1
-#define NCMDS_TX 1 /* dma commands per element in tx ring */
-#define RX_BUFLEN (ETH_FRAME_LEN + 8)
-#define TX_TIMEOUT HZ /* 1 second */
-
-/* Chip rev needs workaround on HW & multicast addr change */
-#define BROKEN_ADDRCHG_REV 0x0941
-
-/* Bits in transmit DMA status */
-#define TX_DMA_ERR 0x80
-
-struct mace_data {
- volatile struct mace __iomem *mace;
- volatile struct dbdma_regs __iomem *tx_dma;
- int tx_dma_intr;
- volatile struct dbdma_regs __iomem *rx_dma;
- int rx_dma_intr;
- volatile struct dbdma_cmd *tx_cmds; /* xmit dma command list */
- volatile struct dbdma_cmd *rx_cmds; /* recv dma command list */
- struct sk_buff *rx_bufs[N_RX_RING];
- int rx_fill;
- int rx_empty;
- struct sk_buff *tx_bufs[N_TX_RING];
- int tx_fill;
- int tx_empty;
- unsigned char maccc;
- unsigned char tx_fullup;
- unsigned char tx_active;
- unsigned char tx_bad_runt;
- struct timer_list tx_timeout;
- int timeout_active;
- int port_aaui;
- int chipid;
- struct macio_dev *mdev;
- spinlock_t lock;
-};
-
-/*
- * Number of bytes of private data per MACE: allow enough for
- * the rx and tx dma commands plus a branch dma command each,
- * and another 16 bytes to allow us to align the dma command
- * buffers on a 16 byte boundary.
- */
-#define PRIV_BYTES (sizeof(struct mace_data) \
- + (N_RX_RING + NCMDS_TX * N_TX_RING + 3) * sizeof(struct dbdma_cmd))
-
-static int mace_open(struct net_device *dev);
-static int mace_close(struct net_device *dev);
-static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev);
-static void mace_set_multicast(struct net_device *dev);
-static void mace_reset(struct net_device *dev);
-static int mace_set_address(struct net_device *dev, void *addr);
-static irqreturn_t mace_interrupt(int irq, void *dev_id);
-static irqreturn_t mace_txdma_intr(int irq, void *dev_id);
-static irqreturn_t mace_rxdma_intr(int irq, void *dev_id);
-static void mace_set_timeout(struct net_device *dev);
-static void mace_tx_timeout(unsigned long data);
-static inline void dbdma_reset(volatile struct dbdma_regs __iomem *dma);
-static inline void mace_clean_rings(struct mace_data *mp);
-static void __mace_set_address(struct net_device *dev, void *addr);
-
-/*
- * If we can't get a skbuff when we need it, we use this area for DMA.
- */
-static unsigned char *dummy_buf;
-
-static const struct net_device_ops mace_netdev_ops = {
- .ndo_open = mace_open,
- .ndo_stop = mace_close,
- .ndo_start_xmit = mace_xmit_start,
- .ndo_set_multicast_list = mace_set_multicast,
- .ndo_set_mac_address = mace_set_address,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static int __devinit mace_probe(struct macio_dev *mdev, const struct of_device_id *match)
-{
- struct device_node *mace = macio_get_of_node(mdev);
- struct net_device *dev;
- struct mace_data *mp;
- const unsigned char *addr;
- int j, rev, rc = -EBUSY;
-
- if (macio_resource_count(mdev) != 3 || macio_irq_count(mdev) != 3) {
- printk(KERN_ERR "can't use MACE %s: need 3 addrs and 3 irqs\n",
- mace->full_name);
- return -ENODEV;
- }
-
- addr = of_get_property(mace, "mac-address", NULL);
- if (addr == NULL) {
- addr = of_get_property(mace, "local-mac-address", NULL);
- if (addr == NULL) {
- printk(KERN_ERR "Can't get mac-address for MACE %s\n",
- mace->full_name);
- return -ENODEV;
- }
- }
-
- /*
- * lazy allocate the driver-wide dummy buffer. (Note that we
- * never have more than one MACE in the system anyway)
- */
- if (dummy_buf == NULL) {
- dummy_buf = kmalloc(RX_BUFLEN+2, GFP_KERNEL);
- if (dummy_buf == NULL) {
- printk(KERN_ERR "MACE: couldn't allocate dummy buffer\n");
- return -ENOMEM;
- }
- }
-
- if (macio_request_resources(mdev, "mace")) {
- printk(KERN_ERR "MACE: can't request IO resources !\n");
- return -EBUSY;
- }
-
- dev = alloc_etherdev(PRIV_BYTES);
- if (!dev) {
- printk(KERN_ERR "MACE: can't allocate ethernet device !\n");
- rc = -ENOMEM;
- goto err_release;
- }
- SET_NETDEV_DEV(dev, &mdev->ofdev.dev);
-
- mp = netdev_priv(dev);
- mp->mdev = mdev;
- macio_set_drvdata(mdev, dev);
-
- dev->base_addr = macio_resource_start(mdev, 0);
- mp->mace = ioremap(dev->base_addr, 0x1000);
- if (mp->mace == NULL) {
- printk(KERN_ERR "MACE: can't map IO resources !\n");
- rc = -ENOMEM;
- goto err_free;
- }
- dev->irq = macio_irq(mdev, 0);
-
- rev = addr[0] == 0 && addr[1] == 0xA0;
- for (j = 0; j < 6; ++j) {
- dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j];
- }
- mp->chipid = (in_8(&mp->mace->chipid_hi) << 8) |
- in_8(&mp->mace->chipid_lo);
-
-
- mp = netdev_priv(dev);
- mp->maccc = ENXMT | ENRCV;
-
- mp->tx_dma = ioremap(macio_resource_start(mdev, 1), 0x1000);
- if (mp->tx_dma == NULL) {
- printk(KERN_ERR "MACE: can't map TX DMA resources !\n");
- rc = -ENOMEM;
- goto err_unmap_io;
- }
- mp->tx_dma_intr = macio_irq(mdev, 1);
-
- mp->rx_dma = ioremap(macio_resource_start(mdev, 2), 0x1000);
- if (mp->rx_dma == NULL) {
- printk(KERN_ERR "MACE: can't map RX DMA resources !\n");
- rc = -ENOMEM;
- goto err_unmap_tx_dma;
- }
- mp->rx_dma_intr = macio_irq(mdev, 2);
-
- mp->tx_cmds = (volatile struct dbdma_cmd *) DBDMA_ALIGN(mp + 1);
- mp->rx_cmds = mp->tx_cmds + NCMDS_TX * N_TX_RING + 1;
-
- memset((char *) mp->tx_cmds, 0,
- (NCMDS_TX*N_TX_RING + N_RX_RING + 2) * sizeof(struct dbdma_cmd));
- init_timer(&mp->tx_timeout);
- spin_lock_init(&mp->lock);
- mp->timeout_active = 0;
-
- if (port_aaui >= 0)
- mp->port_aaui = port_aaui;
- else {
- /* Apple Network Server uses the AAUI port */
- if (of_machine_is_compatible("AAPL,ShinerESB"))
- mp->port_aaui = 1;
- else {
-#ifdef CONFIG_MACE_AAUI_PORT
- mp->port_aaui = 1;
-#else
- mp->port_aaui = 0;
-#endif
- }
- }
-
- dev->netdev_ops = &mace_netdev_ops;
-
- /*
- * Most of what is below could be moved to mace_open()
- */
- mace_reset(dev);
-
- rc = request_irq(dev->irq, mace_interrupt, 0, "MACE", dev);
- if (rc) {
- printk(KERN_ERR "MACE: can't get irq %d\n", dev->irq);
- goto err_unmap_rx_dma;
- }
- rc = request_irq(mp->tx_dma_intr, mace_txdma_intr, 0, "MACE-txdma", dev);
- if (rc) {
- printk(KERN_ERR "MACE: can't get irq %d\n", mp->tx_dma_intr);
- goto err_free_irq;
- }
- rc = request_irq(mp->rx_dma_intr, mace_rxdma_intr, 0, "MACE-rxdma", dev);
- if (rc) {
- printk(KERN_ERR "MACE: can't get irq %d\n", mp->rx_dma_intr);
- goto err_free_tx_irq;
- }
-
- rc = register_netdev(dev);
- if (rc) {
- printk(KERN_ERR "MACE: Cannot register net device, aborting.\n");
- goto err_free_rx_irq;
- }
-
- printk(KERN_INFO "%s: MACE at %pM, chip revision %d.%d\n",
- dev->name, dev->dev_addr,
- mp->chipid >> 8, mp->chipid & 0xff);
-
- return 0;
-
- err_free_rx_irq:
- free_irq(macio_irq(mdev, 2), dev);
- err_free_tx_irq:
- free_irq(macio_irq(mdev, 1), dev);
- err_free_irq:
- free_irq(macio_irq(mdev, 0), dev);
- err_unmap_rx_dma:
- iounmap(mp->rx_dma);
- err_unmap_tx_dma:
- iounmap(mp->tx_dma);
- err_unmap_io:
- iounmap(mp->mace);
- err_free:
- free_netdev(dev);
- err_release:
- macio_release_resources(mdev);
-
- return rc;
-}
-
-static int __devexit mace_remove(struct macio_dev *mdev)
-{
- struct net_device *dev = macio_get_drvdata(mdev);
- struct mace_data *mp;
-
- BUG_ON(dev == NULL);
-
- macio_set_drvdata(mdev, NULL);
-
- mp = netdev_priv(dev);
-
- unregister_netdev(dev);
-
- free_irq(dev->irq, dev);
- free_irq(mp->tx_dma_intr, dev);
- free_irq(mp->rx_dma_intr, dev);
-
- iounmap(mp->rx_dma);
- iounmap(mp->tx_dma);
- iounmap(mp->mace);
-
- free_netdev(dev);
-
- macio_release_resources(mdev);
-
- return 0;
-}
-
-static void dbdma_reset(volatile struct dbdma_regs __iomem *dma)
-{
- int i;
-
- out_le32(&dma->control, (WAKE|FLUSH|PAUSE|RUN) << 16);
-
- /*
- * Yes this looks peculiar, but apparently it needs to be this
- * way on some machines.
- */
- for (i = 200; i > 0; --i)
- if (ld_le32(&dma->control) & RUN)
- udelay(1);
-}
-
-static void mace_reset(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace __iomem *mb = mp->mace;
- int i;
-
- /* soft-reset the chip */
- i = 200;
- while (--i) {
- out_8(&mb->biucc, SWRST);
- if (in_8(&mb->biucc) & SWRST) {
- udelay(10);
- continue;
- }
- break;
- }
- if (!i) {
- printk(KERN_ERR "mace: cannot reset chip!\n");
- return;
- }
-
- out_8(&mb->imr, 0xff); /* disable all intrs for now */
- i = in_8(&mb->ir);
- out_8(&mb->maccc, 0); /* turn off tx, rx */
-
- out_8(&mb->biucc, XMTSP_64);
- out_8(&mb->utr, RTRD);
- out_8(&mb->fifocc, RCVFW_32 | XMTFW_16 | XMTFWU | RCVFWU | XMTBRST);
- out_8(&mb->xmtfc, AUTO_PAD_XMIT); /* auto-pad short frames */
- out_8(&mb->rcvfc, 0);
-
- /* load up the hardware address */
- __mace_set_address(dev, dev->dev_addr);
-
- /* clear the multicast filter */
- if (mp->chipid == BROKEN_ADDRCHG_REV)
- out_8(&mb->iac, LOGADDR);
- else {
- out_8(&mb->iac, ADDRCHG | LOGADDR);
- while ((in_8(&mb->iac) & ADDRCHG) != 0)
- ;
- }
- for (i = 0; i < 8; ++i)
- out_8(&mb->ladrf, 0);
-
- /* done changing address */
- if (mp->chipid != BROKEN_ADDRCHG_REV)
- out_8(&mb->iac, 0);
-
- if (mp->port_aaui)
- out_8(&mb->plscc, PORTSEL_AUI + ENPLSIO);
- else
- out_8(&mb->plscc, PORTSEL_GPSI + ENPLSIO);
-}
-
-static void __mace_set_address(struct net_device *dev, void *addr)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace __iomem *mb = mp->mace;
- unsigned char *p = addr;
- int i;
-
- /* load up the hardware address */
- if (mp->chipid == BROKEN_ADDRCHG_REV)
- out_8(&mb->iac, PHYADDR);
- else {
- out_8(&mb->iac, ADDRCHG | PHYADDR);
- while ((in_8(&mb->iac) & ADDRCHG) != 0)
- ;
- }
- for (i = 0; i < 6; ++i)
- out_8(&mb->padr, dev->dev_addr[i] = p[i]);
- if (mp->chipid != BROKEN_ADDRCHG_REV)
- out_8(&mb->iac, 0);
-}
-
-static int mace_set_address(struct net_device *dev, void *addr)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace __iomem *mb = mp->mace;
- unsigned long flags;
-
- spin_lock_irqsave(&mp->lock, flags);
-
- __mace_set_address(dev, addr);
-
- /* note: setting ADDRCHG clears ENRCV */
- out_8(&mb->maccc, mp->maccc);
-
- spin_unlock_irqrestore(&mp->lock, flags);
- return 0;
-}
-
-static inline void mace_clean_rings(struct mace_data *mp)
-{
- int i;
-
- /* free some skb's */
- for (i = 0; i < N_RX_RING; ++i) {
- if (mp->rx_bufs[i] != NULL) {
- dev_kfree_skb(mp->rx_bufs[i]);
- mp->rx_bufs[i] = NULL;
- }
- }
- for (i = mp->tx_empty; i != mp->tx_fill; ) {
- dev_kfree_skb(mp->tx_bufs[i]);
- if (++i >= N_TX_RING)
- i = 0;
- }
-}
-
-static int mace_open(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace __iomem *mb = mp->mace;
- volatile struct dbdma_regs __iomem *rd = mp->rx_dma;
- volatile struct dbdma_regs __iomem *td = mp->tx_dma;
- volatile struct dbdma_cmd *cp;
- int i;
- struct sk_buff *skb;
- unsigned char *data;
-
- /* reset the chip */
- mace_reset(dev);
-
- /* initialize list of sk_buffs for receiving and set up recv dma */
- mace_clean_rings(mp);
- memset((char *)mp->rx_cmds, 0, N_RX_RING * sizeof(struct dbdma_cmd));
- cp = mp->rx_cmds;
- for (i = 0; i < N_RX_RING - 1; ++i) {
- skb = dev_alloc_skb(RX_BUFLEN + 2);
- if (!skb) {
- data = dummy_buf;
- } else {
- skb_reserve(skb, 2); /* so IP header lands on 4-byte bdry */
- data = skb->data;
- }
- mp->rx_bufs[i] = skb;
- st_le16(&cp->req_count, RX_BUFLEN);
- st_le16(&cp->command, INPUT_LAST + INTR_ALWAYS);
- st_le32(&cp->phy_addr, virt_to_bus(data));
- cp->xfer_status = 0;
- ++cp;
- }
- mp->rx_bufs[i] = NULL;
- st_le16(&cp->command, DBDMA_STOP);
- mp->rx_fill = i;
- mp->rx_empty = 0;
-
- /* Put a branch back to the beginning of the receive command list */
- ++cp;
- st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
- st_le32(&cp->cmd_dep, virt_to_bus(mp->rx_cmds));
-
- /* start rx dma */
- out_le32(&rd->control, (RUN|PAUSE|FLUSH|WAKE) << 16); /* clear run bit */
- out_le32(&rd->cmdptr, virt_to_bus(mp->rx_cmds));
- out_le32(&rd->control, (RUN << 16) | RUN);
-
- /* put a branch at the end of the tx command list */
- cp = mp->tx_cmds + NCMDS_TX * N_TX_RING;
- st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
- st_le32(&cp->cmd_dep, virt_to_bus(mp->tx_cmds));
-
- /* reset tx dma */
- out_le32(&td->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
- out_le32(&td->cmdptr, virt_to_bus(mp->tx_cmds));
- mp->tx_fill = 0;
- mp->tx_empty = 0;
- mp->tx_fullup = 0;
- mp->tx_active = 0;
- mp->tx_bad_runt = 0;
-
- /* turn it on! */
- out_8(&mb->maccc, mp->maccc);
- /* enable all interrupts except receive interrupts */
- out_8(&mb->imr, RCVINT);
-
- return 0;
-}
-
-static int mace_close(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace __iomem *mb = mp->mace;
- volatile struct dbdma_regs __iomem *rd = mp->rx_dma;
- volatile struct dbdma_regs __iomem *td = mp->tx_dma;
-
- /* disable rx and tx */
- out_8(&mb->maccc, 0);
- out_8(&mb->imr, 0xff); /* disable all intrs */
-
- /* disable rx and tx dma */
- st_le32(&rd->control, (RUN|PAUSE|FLUSH|WAKE) << 16); /* clear run bit */
- st_le32(&td->control, (RUN|PAUSE|FLUSH|WAKE) << 16); /* clear run bit */
-
- mace_clean_rings(mp);
-
- return 0;
-}
-
-static inline void mace_set_timeout(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
-
- if (mp->timeout_active)
- del_timer(&mp->tx_timeout);
- mp->tx_timeout.expires = jiffies + TX_TIMEOUT;
- mp->tx_timeout.function = mace_tx_timeout;
- mp->tx_timeout.data = (unsigned long) dev;
- add_timer(&mp->tx_timeout);
- mp->timeout_active = 1;
-}
-
-static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct dbdma_regs __iomem *td = mp->tx_dma;
- volatile struct dbdma_cmd *cp, *np;
- unsigned long flags;
- int fill, next, len;
-
- /* see if there's a free slot in the tx ring */
- spin_lock_irqsave(&mp->lock, flags);
- fill = mp->tx_fill;
- next = fill + 1;
- if (next >= N_TX_RING)
- next = 0;
- if (next == mp->tx_empty) {
- netif_stop_queue(dev);
- mp->tx_fullup = 1;
- spin_unlock_irqrestore(&mp->lock, flags);
- return NETDEV_TX_BUSY; /* can't take it at the moment */
- }
- spin_unlock_irqrestore(&mp->lock, flags);
-
- /* partially fill in the dma command block */
- len = skb->len;
- if (len > ETH_FRAME_LEN) {
- printk(KERN_DEBUG "mace: xmit frame too long (%d)\n", len);
- len = ETH_FRAME_LEN;
- }
- mp->tx_bufs[fill] = skb;
- cp = mp->tx_cmds + NCMDS_TX * fill;
- st_le16(&cp->req_count, len);
- st_le32(&cp->phy_addr, virt_to_bus(skb->data));
-
- np = mp->tx_cmds + NCMDS_TX * next;
- out_le16(&np->command, DBDMA_STOP);
-
- /* poke the tx dma channel */
- spin_lock_irqsave(&mp->lock, flags);
- mp->tx_fill = next;
- if (!mp->tx_bad_runt && mp->tx_active < MAX_TX_ACTIVE) {
- out_le16(&cp->xfer_status, 0);
- out_le16(&cp->command, OUTPUT_LAST);
- out_le32(&td->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
- ++mp->tx_active;
- mace_set_timeout(dev);
- }
- if (++next >= N_TX_RING)
- next = 0;
- if (next == mp->tx_empty)
- netif_stop_queue(dev);
- spin_unlock_irqrestore(&mp->lock, flags);
-
- return NETDEV_TX_OK;
-}
-
-static void mace_set_multicast(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace __iomem *mb = mp->mace;
- int i;
- u32 crc;
- unsigned long flags;
-
- spin_lock_irqsave(&mp->lock, flags);
- mp->maccc &= ~PROM;
- if (dev->flags & IFF_PROMISC) {
- mp->maccc |= PROM;
- } else {
- unsigned char multicast_filter[8];
- struct netdev_hw_addr *ha;
-
- if (dev->flags & IFF_ALLMULTI) {
- for (i = 0; i < 8; i++)
- multicast_filter[i] = 0xff;
- } else {
- for (i = 0; i < 8; i++)
- multicast_filter[i] = 0;
- netdev_for_each_mc_addr(ha, dev) {
- crc = ether_crc_le(6, ha->addr);
- i = crc >> 26; /* bit number in multicast_filter */
- multicast_filter[i >> 3] |= 1 << (i & 7);
- }
- }
-#if 0
- printk("Multicast filter :");
- for (i = 0; i < 8; i++)
- printk("%02x ", multicast_filter[i]);
- printk("\n");
-#endif
-
- if (mp->chipid == BROKEN_ADDRCHG_REV)
- out_8(&mb->iac, LOGADDR);
- else {
- out_8(&mb->iac, ADDRCHG | LOGADDR);
- while ((in_8(&mb->iac) & ADDRCHG) != 0)
- ;
- }
- for (i = 0; i < 8; ++i)
- out_8(&mb->ladrf, multicast_filter[i]);
- if (mp->chipid != BROKEN_ADDRCHG_REV)
- out_8(&mb->iac, 0);
- }
- /* reset maccc */
- out_8(&mb->maccc, mp->maccc);
- spin_unlock_irqrestore(&mp->lock, flags);
-}
-
-static void mace_handle_misc_intrs(struct mace_data *mp, int intr, struct net_device *dev)
-{
- volatile struct mace __iomem *mb = mp->mace;
- static int mace_babbles, mace_jabbers;
-
- if (intr & MPCO)
- dev->stats.rx_missed_errors += 256;
- dev->stats.rx_missed_errors += in_8(&mb->mpc); /* reading clears it */
- if (intr & RNTPCO)
- dev->stats.rx_length_errors += 256;
- dev->stats.rx_length_errors += in_8(&mb->rntpc); /* reading clears it */
- if (intr & CERR)
- ++dev->stats.tx_heartbeat_errors;
- if (intr & BABBLE)
- if (mace_babbles++ < 4)
- printk(KERN_DEBUG "mace: babbling transmitter\n");
- if (intr & JABBER)
- if (mace_jabbers++ < 4)
- printk(KERN_DEBUG "mace: jabbering transceiver\n");
-}
-
-static irqreturn_t mace_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace __iomem *mb = mp->mace;
- volatile struct dbdma_regs __iomem *td = mp->tx_dma;
- volatile struct dbdma_cmd *cp;
- int intr, fs, i, stat, x;
- int xcount, dstat;
- unsigned long flags;
- /* static int mace_last_fs, mace_last_xcount; */
-
- spin_lock_irqsave(&mp->lock, flags);
- intr = in_8(&mb->ir); /* read interrupt register */
- in_8(&mb->xmtrc); /* get retries */
- mace_handle_misc_intrs(mp, intr, dev);
-
- i = mp->tx_empty;
- while (in_8(&mb->pr) & XMTSV) {
- del_timer(&mp->tx_timeout);
- mp->timeout_active = 0;
- /*
- * Clear any interrupt indication associated with this status
- * word. This appears to unlatch any error indication from
- * the DMA controller.
- */
- intr = in_8(&mb->ir);
- if (intr != 0)
- mace_handle_misc_intrs(mp, intr, dev);
- if (mp->tx_bad_runt) {
- fs = in_8(&mb->xmtfs);
- mp->tx_bad_runt = 0;
- out_8(&mb->xmtfc, AUTO_PAD_XMIT);
- continue;
- }
- dstat = ld_le32(&td->status);
- /* stop DMA controller */
- out_le32(&td->control, RUN << 16);
- /*
- * xcount is the number of complete frames which have been
- * written to the fifo but for which status has not been read.
- */
- xcount = (in_8(&mb->fifofc) >> XMTFC_SH) & XMTFC_MASK;
- if (xcount == 0 || (dstat & DEAD)) {
- /*
- * If a packet was aborted before the DMA controller has
- * finished transferring it, it seems that there are 2 bytes
- * which are stuck in some buffer somewhere. These will get
- * transmitted as soon as we read the frame status (which
- * reenables the transmit data transfer request). Turning
- * off the DMA controller and/or resetting the MACE doesn't
- * help. So we disable auto-padding and FCS transmission
- * so the two bytes will only be a runt packet which should
- * be ignored by other stations.
- */
- out_8(&mb->xmtfc, DXMTFCS);
- }
- fs = in_8(&mb->xmtfs);
- if ((fs & XMTSV) == 0) {
- printk(KERN_ERR "mace: xmtfs not valid! (fs=%x xc=%d ds=%x)\n",
- fs, xcount, dstat);
- mace_reset(dev);
- /*
- * XXX mace likes to hang the machine after a xmtfs error.
- * This is hard to reproduce, reseting *may* help
- */
- }
- cp = mp->tx_cmds + NCMDS_TX * i;
- stat = ld_le16(&cp->xfer_status);
- if ((fs & (UFLO|LCOL|LCAR|RTRY)) || (dstat & DEAD) || xcount == 0) {
- /*
- * Check whether there were in fact 2 bytes written to
- * the transmit FIFO.
- */
- udelay(1);
- x = (in_8(&mb->fifofc) >> XMTFC_SH) & XMTFC_MASK;
- if (x != 0) {
- /* there were two bytes with an end-of-packet indication */
- mp->tx_bad_runt = 1;
- mace_set_timeout(dev);
- } else {
- /*
- * Either there weren't the two bytes buffered up, or they
- * didn't have an end-of-packet indication.
- * We flush the transmit FIFO just in case (by setting the
- * XMTFWU bit with the transmitter disabled).
- */
- out_8(&mb->maccc, in_8(&mb->maccc) & ~ENXMT);
- out_8(&mb->fifocc, in_8(&mb->fifocc) | XMTFWU);
- udelay(1);
- out_8(&mb->maccc, in_8(&mb->maccc) | ENXMT);
- out_8(&mb->xmtfc, AUTO_PAD_XMIT);
- }
- }
- /* dma should have finished */
- if (i == mp->tx_fill) {
- printk(KERN_DEBUG "mace: tx ring ran out? (fs=%x xc=%d ds=%x)\n",
- fs, xcount, dstat);
- continue;
- }
- /* Update stats */
- if (fs & (UFLO|LCOL|LCAR|RTRY)) {
- ++dev->stats.tx_errors;
- if (fs & LCAR)
- ++dev->stats.tx_carrier_errors;
- if (fs & (UFLO|LCOL|RTRY))
- ++dev->stats.tx_aborted_errors;
- } else {
- dev->stats.tx_bytes += mp->tx_bufs[i]->len;
- ++dev->stats.tx_packets;
- }
- dev_kfree_skb_irq(mp->tx_bufs[i]);
- --mp->tx_active;
- if (++i >= N_TX_RING)
- i = 0;
-#if 0
- mace_last_fs = fs;
- mace_last_xcount = xcount;
-#endif
- }
-
- if (i != mp->tx_empty) {
- mp->tx_fullup = 0;
- netif_wake_queue(dev);
- }
- mp->tx_empty = i;
- i += mp->tx_active;
- if (i >= N_TX_RING)
- i -= N_TX_RING;
- if (!mp->tx_bad_runt && i != mp->tx_fill && mp->tx_active < MAX_TX_ACTIVE) {
- do {
- /* set up the next one */
- cp = mp->tx_cmds + NCMDS_TX * i;
- out_le16(&cp->xfer_status, 0);
- out_le16(&cp->command, OUTPUT_LAST);
- ++mp->tx_active;
- if (++i >= N_TX_RING)
- i = 0;
- } while (i != mp->tx_fill && mp->tx_active < MAX_TX_ACTIVE);
- out_le32(&td->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
- mace_set_timeout(dev);
- }
- spin_unlock_irqrestore(&mp->lock, flags);
- return IRQ_HANDLED;
-}
-
-static void mace_tx_timeout(unsigned long data)
-{
- struct net_device *dev = (struct net_device *) data;
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace __iomem *mb = mp->mace;
- volatile struct dbdma_regs __iomem *td = mp->tx_dma;
- volatile struct dbdma_regs __iomem *rd = mp->rx_dma;
- volatile struct dbdma_cmd *cp;
- unsigned long flags;
- int i;
-
- spin_lock_irqsave(&mp->lock, flags);
- mp->timeout_active = 0;
- if (mp->tx_active == 0 && !mp->tx_bad_runt)
- goto out;
-
- /* update various counters */
- mace_handle_misc_intrs(mp, in_8(&mb->ir), dev);
-
- cp = mp->tx_cmds + NCMDS_TX * mp->tx_empty;
-
- /* turn off both tx and rx and reset the chip */
- out_8(&mb->maccc, 0);
- printk(KERN_ERR "mace: transmit timeout - resetting\n");
- dbdma_reset(td);
- mace_reset(dev);
-
- /* restart rx dma */
- cp = bus_to_virt(ld_le32(&rd->cmdptr));
- dbdma_reset(rd);
- out_le16(&cp->xfer_status, 0);
- out_le32(&rd->cmdptr, virt_to_bus(cp));
- out_le32(&rd->control, (RUN << 16) | RUN);
-
- /* fix up the transmit side */
- i = mp->tx_empty;
- mp->tx_active = 0;
- ++dev->stats.tx_errors;
- if (mp->tx_bad_runt) {
- mp->tx_bad_runt = 0;
- } else if (i != mp->tx_fill) {
- dev_kfree_skb(mp->tx_bufs[i]);
- if (++i >= N_TX_RING)
- i = 0;
- mp->tx_empty = i;
- }
- mp->tx_fullup = 0;
- netif_wake_queue(dev);
- if (i != mp->tx_fill) {
- cp = mp->tx_cmds + NCMDS_TX * i;
- out_le16(&cp->xfer_status, 0);
- out_le16(&cp->command, OUTPUT_LAST);
- out_le32(&td->cmdptr, virt_to_bus(cp));
- out_le32(&td->control, (RUN << 16) | RUN);
- ++mp->tx_active;
- mace_set_timeout(dev);
- }
-
- /* turn it back on */
- out_8(&mb->imr, RCVINT);
- out_8(&mb->maccc, mp->maccc);
-
-out:
- spin_unlock_irqrestore(&mp->lock, flags);
-}
-
-static irqreturn_t mace_txdma_intr(int irq, void *dev_id)
-{
- return IRQ_HANDLED;
-}
-
-static irqreturn_t mace_rxdma_intr(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct mace_data *mp = netdev_priv(dev);
- volatile struct dbdma_regs __iomem *rd = mp->rx_dma;
- volatile struct dbdma_cmd *cp, *np;
- int i, nb, stat, next;
- struct sk_buff *skb;
- unsigned frame_status;
- static int mace_lost_status;
- unsigned char *data;
- unsigned long flags;
-
- spin_lock_irqsave(&mp->lock, flags);
- for (i = mp->rx_empty; i != mp->rx_fill; ) {
- cp = mp->rx_cmds + i;
- stat = ld_le16(&cp->xfer_status);
- if ((stat & ACTIVE) == 0) {
- next = i + 1;
- if (next >= N_RX_RING)
- next = 0;
- np = mp->rx_cmds + next;
- if (next != mp->rx_fill &&
- (ld_le16(&np->xfer_status) & ACTIVE) != 0) {
- printk(KERN_DEBUG "mace: lost a status word\n");
- ++mace_lost_status;
- } else
- break;
- }
- nb = ld_le16(&cp->req_count) - ld_le16(&cp->res_count);
- out_le16(&cp->command, DBDMA_STOP);
- /* got a packet, have a look at it */
- skb = mp->rx_bufs[i];
- if (!skb) {
- ++dev->stats.rx_dropped;
- } else if (nb > 8) {
- data = skb->data;
- frame_status = (data[nb-3] << 8) + data[nb-4];
- if (frame_status & (RS_OFLO|RS_CLSN|RS_FRAMERR|RS_FCSERR)) {
- ++dev->stats.rx_errors;
- if (frame_status & RS_OFLO)
- ++dev->stats.rx_over_errors;
- if (frame_status & RS_FRAMERR)
- ++dev->stats.rx_frame_errors;
- if (frame_status & RS_FCSERR)
- ++dev->stats.rx_crc_errors;
- } else {
- /* Mace feature AUTO_STRIP_RCV is on by default, dropping the
- * FCS on frames with 802.3 headers. This means that Ethernet
- * frames have 8 extra octets at the end, while 802.3 frames
- * have only 4. We need to correctly account for this. */
- if (*(unsigned short *)(data+12) < 1536) /* 802.3 header */
- nb -= 4;
- else /* Ethernet header; mace includes FCS */
- nb -= 8;
- skb_put(skb, nb);
- skb->protocol = eth_type_trans(skb, dev);
- dev->stats.rx_bytes += skb->len;
- netif_rx(skb);
- mp->rx_bufs[i] = NULL;
- ++dev->stats.rx_packets;
- }
- } else {
- ++dev->stats.rx_errors;
- ++dev->stats.rx_length_errors;
- }
-
- /* advance to next */
- if (++i >= N_RX_RING)
- i = 0;
- }
- mp->rx_empty = i;
-
- i = mp->rx_fill;
- for (;;) {
- next = i + 1;
- if (next >= N_RX_RING)
- next = 0;
- if (next == mp->rx_empty)
- break;
- cp = mp->rx_cmds + i;
- skb = mp->rx_bufs[i];
- if (!skb) {
- skb = dev_alloc_skb(RX_BUFLEN + 2);
- if (skb) {
- skb_reserve(skb, 2);
- mp->rx_bufs[i] = skb;
- }
- }
- st_le16(&cp->req_count, RX_BUFLEN);
- data = skb? skb->data: dummy_buf;
- st_le32(&cp->phy_addr, virt_to_bus(data));
- out_le16(&cp->xfer_status, 0);
- out_le16(&cp->command, INPUT_LAST + INTR_ALWAYS);
-#if 0
- if ((ld_le32(&rd->status) & ACTIVE) != 0) {
- out_le32(&rd->control, (PAUSE << 16) | PAUSE);
- while ((in_le32(&rd->status) & ACTIVE) != 0)
- ;
- }
-#endif
- i = next;
- }
- if (i != mp->rx_fill) {
- out_le32(&rd->control, ((RUN|WAKE) << 16) | (RUN|WAKE));
- mp->rx_fill = i;
- }
- spin_unlock_irqrestore(&mp->lock, flags);
- return IRQ_HANDLED;
-}
-
-static struct of_device_id mace_match[] =
-{
- {
- .name = "mace",
- },
- {},
-};
-MODULE_DEVICE_TABLE (of, mace_match);
-
-static struct macio_driver mace_driver =
-{
- .driver = {
- .name = "mace",
- .owner = THIS_MODULE,
- .of_match_table = mace_match,
- },
- .probe = mace_probe,
- .remove = mace_remove,
-};
-
-
-static int __init mace_init(void)
-{
- return macio_register_driver(&mace_driver);
-}
-
-static void __exit mace_cleanup(void)
-{
- macio_unregister_driver(&mace_driver);
-
- kfree(dummy_buf);
- dummy_buf = NULL;
-}
-
-MODULE_AUTHOR("Paul Mackerras");
-MODULE_DESCRIPTION("PowerMac MACE driver.");
-module_param(port_aaui, int, 0);
-MODULE_PARM_DESC(port_aaui, "MACE uses AAUI port (0-1)");
-MODULE_LICENSE("GPL");
-
-module_init(mace_init);
-module_exit(mace_cleanup);
+++ /dev/null
-/*
- * mace.h - definitions for the registers in the Am79C940 MACE
- * (Medium Access Control for Ethernet) controller.
- *
- * Copyright (C) 1996 Paul Mackerras.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#define REG(x) volatile unsigned char x; char x ## _pad[15]
-
-struct mace {
- REG(rcvfifo); /* receive FIFO */
- REG(xmtfifo); /* transmit FIFO */
- REG(xmtfc); /* transmit frame control */
- REG(xmtfs); /* transmit frame status */
- REG(xmtrc); /* transmit retry count */
- REG(rcvfc); /* receive frame control */
- REG(rcvfs); /* receive frame status (4 bytes) */
- REG(fifofc); /* FIFO frame count */
- REG(ir); /* interrupt register */
- REG(imr); /* interrupt mask register */
- REG(pr); /* poll register */
- REG(biucc); /* bus interface unit config control */
- REG(fifocc); /* FIFO configuration control */
- REG(maccc); /* medium access control config control */
- REG(plscc); /* phys layer signalling config control */
- REG(phycc); /* physical configuration control */
- REG(chipid_lo); /* chip ID, lsb */
- REG(chipid_hi); /* chip ID, msb */
- REG(iac); /* internal address config */
- REG(reg19);
- REG(ladrf); /* logical address filter (8 bytes) */
- REG(padr); /* physical address (6 bytes) */
- REG(reg22);
- REG(reg23);
- REG(mpc); /* missed packet count (clears when read) */
- REG(reg25);
- REG(rntpc); /* runt packet count (clears when read) */
- REG(rcvcc); /* recv collision count (clears when read) */
- REG(reg28);
- REG(utr); /* user test reg */
- REG(reg30);
- REG(reg31);
-};
-
-/* Bits in XMTFC */
-#define DRTRY 0x80 /* don't retry transmission after collision */
-#define DXMTFCS 0x08 /* don't append FCS to transmitted frame */
-#define AUTO_PAD_XMIT 0x01 /* auto-pad short packets on transmission */
-
-/* Bits in XMTFS: only valid when XMTSV is set in PR and XMTFS */
-#define XMTSV 0x80 /* transmit status (i.e. XMTFS) valid */
-#define UFLO 0x40 /* underflow - xmit fifo ran dry */
-#define LCOL 0x20 /* late collision (transmission aborted) */
-#define MORE 0x10 /* 2 or more retries needed to xmit frame */
-#define ONE 0x08 /* 1 retry needed to xmit frame */
-#define DEFER 0x04 /* MACE had to defer xmission (enet busy) */
-#define LCAR 0x02 /* loss of carrier (transmission aborted) */
-#define RTRY 0x01 /* too many retries (transmission aborted) */
-
-/* Bits in XMTRC: only valid when XMTSV is set in PR (and XMTFS) */
-#define EXDEF 0x80 /* had to defer for excessive time */
-#define RETRY_MASK 0x0f /* number of retries (0 - 15) */
-
-/* Bits in RCVFC */
-#define LLRCV 0x08 /* low latency receive: early DMA request */
-#define M_RBAR 0x04 /* sets function of EAM/R pin */
-#define AUTO_STRIP_RCV 0x01 /* auto-strip short LLC frames on recv */
-
-/*
- * Bits in RCVFS. After a frame is received, four bytes of status
- * are automatically read from this register and appended to the frame
- * data in memory. These are:
- * Byte 0 and 1: message byte count and frame status
- * Byte 2: runt packet count
- * Byte 3: receive collision count
- */
-#define RS_OFLO 0x8000 /* receive FIFO overflowed */
-#define RS_CLSN 0x4000 /* received frame suffered (late) collision */
-#define RS_FRAMERR 0x2000 /* framing error flag */
-#define RS_FCSERR 0x1000 /* frame had FCS error */
-#define RS_COUNT 0x0fff /* mask for byte count field */
-
-/* Bits (fields) in FIFOFC */
-#define RCVFC_SH 4 /* receive frame count in FIFO */
-#define RCVFC_MASK 0x0f
-#define XMTFC_SH 0 /* transmit frame count in FIFO */
-#define XMTFC_MASK 0x0f
-
-/*
- * Bits in IR and IMR. The IR clears itself when read.
- * Setting a bit in the IMR will disable the corresponding interrupt.
- */
-#define JABBER 0x80 /* jabber error - 10baseT xmission too long */
-#define BABBLE 0x40 /* babble - xmitter xmitting for too long */
-#define CERR 0x20 /* collision err - no SQE test (heartbeat) */
-#define RCVCCO 0x10 /* RCVCC overflow */
-#define RNTPCO 0x08 /* RNTPC overflow */
-#define MPCO 0x04 /* MPC overflow */
-#define RCVINT 0x02 /* receive interrupt */
-#define XMTINT 0x01 /* transmitter interrupt */
-
-/* Bits in PR */
-#define XMTSV 0x80 /* XMTFS valid (same as in XMTFS) */
-#define TDTREQ 0x40 /* set when xmit fifo is requesting data */
-#define RDTREQ 0x20 /* set when recv fifo requests data xfer */
-
-/* Bits in BIUCC */
-#define BSWP 0x40 /* byte swap, i.e. big-endian bus */
-#define XMTSP_4 0x00 /* start xmitting when 4 bytes in FIFO */
-#define XMTSP_16 0x10 /* start xmitting when 16 bytes in FIFO */
-#define XMTSP_64 0x20 /* start xmitting when 64 bytes in FIFO */
-#define XMTSP_112 0x30 /* start xmitting when 112 bytes in FIFO */
-#define SWRST 0x01 /* software reset */
-
-/* Bits in FIFOCC */
-#define XMTFW_8 0x00 /* xmit fifo watermark = 8 words free */
-#define XMTFW_16 0x40 /* 16 words free */
-#define XMTFW_32 0x80 /* 32 words free */
-#define RCVFW_16 0x00 /* recv fifo watermark = 16 bytes avail */
-#define RCVFW_32 0x10 /* 32 bytes avail */
-#define RCVFW_64 0x20 /* 64 bytes avail */
-#define XMTFWU 0x08 /* xmit fifo watermark update enable */
-#define RCVFWU 0x04 /* recv fifo watermark update enable */
-#define XMTBRST 0x02 /* enable transmit burst mode */
-#define RCVBRST 0x01 /* enable receive burst mode */
-
-/* Bits in MACCC */
-#define PROM 0x80 /* promiscuous mode */
-#define DXMT2PD 0x40 /* disable xmit two-part deferral algorithm */
-#define EMBA 0x20 /* enable modified backoff algorithm */
-#define DRCVPA 0x08 /* disable receiving physical address */
-#define DRCVBC 0x04 /* disable receiving broadcasts */
-#define ENXMT 0x02 /* enable transmitter */
-#define ENRCV 0x01 /* enable receiver */
-
-/* Bits in PLSCC */
-#define XMTSEL 0x08 /* select DO+/DO- state when idle */
-#define PORTSEL_AUI 0x00 /* select AUI port */
-#define PORTSEL_10T 0x02 /* select 10Base-T port */
-#define PORTSEL_DAI 0x04 /* select DAI port */
-#define PORTSEL_GPSI 0x06 /* select GPSI port */
-#define ENPLSIO 0x01 /* enable optional PLS I/O pins */
-
-/* Bits in PHYCC */
-#define LNKFL 0x80 /* reports 10Base-T link failure */
-#define DLNKTST 0x40 /* disable 10Base-T link test */
-#define REVPOL 0x20 /* 10Base-T receiver polarity reversed */
-#define DAPC 0x10 /* disable auto receiver polarity correction */
-#define LRT 0x08 /* low receive threshold for long links */
-#define ASEL 0x04 /* auto-select AUI or 10Base-T port */
-#define RWAKE 0x02 /* remote wake function */
-#define AWAKE 0x01 /* auto wake function */
-
-/* Bits in IAC */
-#define ADDRCHG 0x80 /* request address change */
-#define PHYADDR 0x04 /* access physical address */
-#define LOGADDR 0x02 /* access multicast filter */
-
-/* Bits in UTR */
-#define RTRE 0x80 /* reserved test register enable. DON'T SET. */
-#define RTRD 0x40 /* reserved test register disable. Sticky */
-#define RPAC 0x20 /* accept runt packets */
-#define FCOLL 0x10 /* force collision */
-#define RCVFCSE 0x08 /* receive FCS enable */
-#define LOOP_NONE 0x00 /* no loopback */
-#define LOOP_EXT 0x02 /* external loopback */
-#define LOOP_INT 0x04 /* internal loopback, excludes MENDEC */
-#define LOOP_MENDEC 0x06 /* internal loopback, includes MENDEC */
+++ /dev/null
-/*
- * Driver for the Macintosh 68K onboard MACE controller with PSC
- * driven DMA. The MACE driver code is derived from mace.c. The
- * Mac68k theory of operation is courtesy of the MacBSD wizards.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Copyright (C) 1996 Paul Mackerras.
- * Copyright (C) 1998 Alan Cox <alan@lxorguk.ukuu.org.uk>
- *
- * Modified heavily by Joshua M. Thompson based on Dave Huang's NetBSD driver
- *
- * Copyright (C) 2007 Finn Thain
- *
- * Converted to DMA API, converted to unified driver model,
- * sync'd some routines with mace.c and fixed various bugs.
- */
-
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/delay.h>
-#include <linux/string.h>
-#include <linux/crc32.h>
-#include <linux/bitrev.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-#include <linux/gfp.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/macintosh.h>
-#include <asm/macints.h>
-#include <asm/mac_psc.h>
-#include <asm/page.h>
-#include "mace.h"
-
-static char mac_mace_string[] = "macmace";
-
-#define N_TX_BUFF_ORDER 0
-#define N_TX_RING (1 << N_TX_BUFF_ORDER)
-#define N_RX_BUFF_ORDER 3
-#define N_RX_RING (1 << N_RX_BUFF_ORDER)
-
-#define TX_TIMEOUT HZ
-
-#define MACE_BUFF_SIZE 0x800
-
-/* Chip rev needs workaround on HW & multicast addr change */
-#define BROKEN_ADDRCHG_REV 0x0941
-
-/* The MACE is simply wired down on a Mac68K box */
-
-#define MACE_BASE (void *)(0x50F1C000)
-#define MACE_PROM (void *)(0x50F08001)
-
-struct mace_data {
- volatile struct mace *mace;
- unsigned char *tx_ring;
- dma_addr_t tx_ring_phys;
- unsigned char *rx_ring;
- dma_addr_t rx_ring_phys;
- int dma_intr;
- int rx_slot, rx_tail;
- int tx_slot, tx_sloti, tx_count;
- int chipid;
- struct device *device;
-};
-
-struct mace_frame {
- u8 rcvcnt;
- u8 pad1;
- u8 rcvsts;
- u8 pad2;
- u8 rntpc;
- u8 pad3;
- u8 rcvcc;
- u8 pad4;
- u32 pad5;
- u32 pad6;
- u8 data[1];
- /* And frame continues.. */
-};
-
-#define PRIV_BYTES sizeof(struct mace_data)
-
-static int mace_open(struct net_device *dev);
-static int mace_close(struct net_device *dev);
-static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev);
-static void mace_set_multicast(struct net_device *dev);
-static int mace_set_address(struct net_device *dev, void *addr);
-static void mace_reset(struct net_device *dev);
-static irqreturn_t mace_interrupt(int irq, void *dev_id);
-static irqreturn_t mace_dma_intr(int irq, void *dev_id);
-static void mace_tx_timeout(struct net_device *dev);
-static void __mace_set_address(struct net_device *dev, void *addr);
-
-/*
- * Load a receive DMA channel with a base address and ring length
- */
-
-static void mace_load_rxdma_base(struct net_device *dev, int set)
-{
- struct mace_data *mp = netdev_priv(dev);
-
- psc_write_word(PSC_ENETRD_CMD + set, 0x0100);
- psc_write_long(PSC_ENETRD_ADDR + set, (u32) mp->rx_ring_phys);
- psc_write_long(PSC_ENETRD_LEN + set, N_RX_RING);
- psc_write_word(PSC_ENETRD_CMD + set, 0x9800);
- mp->rx_tail = 0;
-}
-
-/*
- * Reset the receive DMA subsystem
- */
-
-static void mace_rxdma_reset(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mace = mp->mace;
- u8 maccc = mace->maccc;
-
- mace->maccc = maccc & ~ENRCV;
-
- psc_write_word(PSC_ENETRD_CTL, 0x8800);
- mace_load_rxdma_base(dev, 0x00);
- psc_write_word(PSC_ENETRD_CTL, 0x0400);
-
- psc_write_word(PSC_ENETRD_CTL, 0x8800);
- mace_load_rxdma_base(dev, 0x10);
- psc_write_word(PSC_ENETRD_CTL, 0x0400);
-
- mace->maccc = maccc;
- mp->rx_slot = 0;
-
- psc_write_word(PSC_ENETRD_CMD + PSC_SET0, 0x9800);
- psc_write_word(PSC_ENETRD_CMD + PSC_SET1, 0x9800);
-}
-
-/*
- * Reset the transmit DMA subsystem
- */
-
-static void mace_txdma_reset(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mace = mp->mace;
- u8 maccc;
-
- psc_write_word(PSC_ENETWR_CTL, 0x8800);
-
- maccc = mace->maccc;
- mace->maccc = maccc & ~ENXMT;
-
- mp->tx_slot = mp->tx_sloti = 0;
- mp->tx_count = N_TX_RING;
-
- psc_write_word(PSC_ENETWR_CTL, 0x0400);
- mace->maccc = maccc;
-}
-
-/*
- * Disable DMA
- */
-
-static void mace_dma_off(struct net_device *dev)
-{
- psc_write_word(PSC_ENETRD_CTL, 0x8800);
- psc_write_word(PSC_ENETRD_CTL, 0x1000);
- psc_write_word(PSC_ENETRD_CMD + PSC_SET0, 0x1100);
- psc_write_word(PSC_ENETRD_CMD + PSC_SET1, 0x1100);
-
- psc_write_word(PSC_ENETWR_CTL, 0x8800);
- psc_write_word(PSC_ENETWR_CTL, 0x1000);
- psc_write_word(PSC_ENETWR_CMD + PSC_SET0, 0x1100);
- psc_write_word(PSC_ENETWR_CMD + PSC_SET1, 0x1100);
-}
-
-static const struct net_device_ops mace_netdev_ops = {
- .ndo_open = mace_open,
- .ndo_stop = mace_close,
- .ndo_start_xmit = mace_xmit_start,
- .ndo_tx_timeout = mace_tx_timeout,
- .ndo_set_multicast_list = mace_set_multicast,
- .ndo_set_mac_address = mace_set_address,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-/*
- * Not really much of a probe. The hardware table tells us if this
- * model of Macintrash has a MACE (AV macintoshes)
- */
-
-static int __devinit mace_probe(struct platform_device *pdev)
-{
- int j;
- struct mace_data *mp;
- unsigned char *addr;
- struct net_device *dev;
- unsigned char checksum = 0;
- static int found = 0;
- int err;
-
- if (found || macintosh_config->ether_type != MAC_ETHER_MACE)
- return -ENODEV;
-
- found = 1; /* prevent 'finding' one on every device probe */
-
- dev = alloc_etherdev(PRIV_BYTES);
- if (!dev)
- return -ENOMEM;
-
- mp = netdev_priv(dev);
-
- mp->device = &pdev->dev;
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- dev->base_addr = (u32)MACE_BASE;
- mp->mace = MACE_BASE;
-
- dev->irq = IRQ_MAC_MACE;
- mp->dma_intr = IRQ_MAC_MACE_DMA;
-
- mp->chipid = mp->mace->chipid_hi << 8 | mp->mace->chipid_lo;
-
- /*
- * The PROM contains 8 bytes which total 0xFF when XOR'd
- * together. Due to the usual peculiar apple brain damage
- * the bytes are spaced out in a strange boundary and the
- * bits are reversed.
- */
-
- addr = (void *)MACE_PROM;
-
- for (j = 0; j < 6; ++j) {
- u8 v = bitrev8(addr[j<<4]);
- checksum ^= v;
- dev->dev_addr[j] = v;
- }
- for (; j < 8; ++j) {
- checksum ^= bitrev8(addr[j<<4]);
- }
-
- if (checksum != 0xFF) {
- free_netdev(dev);
- return -ENODEV;
- }
-
- dev->netdev_ops = &mace_netdev_ops;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- printk(KERN_INFO "%s: 68K MACE, hardware address %pM\n",
- dev->name, dev->dev_addr);
-
- err = register_netdev(dev);
- if (!err)
- return 0;
-
- free_netdev(dev);
- return err;
-}
-
-/*
- * Reset the chip.
- */
-
-static void mace_reset(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mb = mp->mace;
- int i;
-
- /* soft-reset the chip */
- i = 200;
- while (--i) {
- mb->biucc = SWRST;
- if (mb->biucc & SWRST) {
- udelay(10);
- continue;
- }
- break;
- }
- if (!i) {
- printk(KERN_ERR "macmace: cannot reset chip!\n");
- return;
- }
-
- mb->maccc = 0; /* turn off tx, rx */
- mb->imr = 0xFF; /* disable all intrs for now */
- i = mb->ir;
-
- mb->biucc = XMTSP_64;
- mb->utr = RTRD;
- mb->fifocc = XMTFW_8 | RCVFW_64 | XMTFWU | RCVFWU;
-
- mb->xmtfc = AUTO_PAD_XMIT; /* auto-pad short frames */
- mb->rcvfc = 0;
-
- /* load up the hardware address */
- __mace_set_address(dev, dev->dev_addr);
-
- /* clear the multicast filter */
- if (mp->chipid == BROKEN_ADDRCHG_REV)
- mb->iac = LOGADDR;
- else {
- mb->iac = ADDRCHG | LOGADDR;
- while ((mb->iac & ADDRCHG) != 0)
- ;
- }
- for (i = 0; i < 8; ++i)
- mb->ladrf = 0;
-
- /* done changing address */
- if (mp->chipid != BROKEN_ADDRCHG_REV)
- mb->iac = 0;
-
- mb->plscc = PORTSEL_AUI;
-}
-
-/*
- * Load the address on a mace controller.
- */
-
-static void __mace_set_address(struct net_device *dev, void *addr)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mb = mp->mace;
- unsigned char *p = addr;
- int i;
-
- /* load up the hardware address */
- if (mp->chipid == BROKEN_ADDRCHG_REV)
- mb->iac = PHYADDR;
- else {
- mb->iac = ADDRCHG | PHYADDR;
- while ((mb->iac & ADDRCHG) != 0)
- ;
- }
- for (i = 0; i < 6; ++i)
- mb->padr = dev->dev_addr[i] = p[i];
- if (mp->chipid != BROKEN_ADDRCHG_REV)
- mb->iac = 0;
-}
-
-static int mace_set_address(struct net_device *dev, void *addr)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mb = mp->mace;
- unsigned long flags;
- u8 maccc;
-
- local_irq_save(flags);
-
- maccc = mb->maccc;
-
- __mace_set_address(dev, addr);
-
- mb->maccc = maccc;
-
- local_irq_restore(flags);
-
- return 0;
-}
-
-/*
- * Open the Macintosh MACE. Most of this is playing with the DMA
- * engine. The ethernet chip is quite friendly.
- */
-
-static int mace_open(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mb = mp->mace;
-
- /* reset the chip */
- mace_reset(dev);
-
- if (request_irq(dev->irq, mace_interrupt, 0, dev->name, dev)) {
- printk(KERN_ERR "%s: can't get irq %d\n", dev->name, dev->irq);
- return -EAGAIN;
- }
- if (request_irq(mp->dma_intr, mace_dma_intr, 0, dev->name, dev)) {
- printk(KERN_ERR "%s: can't get irq %d\n", dev->name, mp->dma_intr);
- free_irq(dev->irq, dev);
- return -EAGAIN;
- }
-
- /* Allocate the DMA ring buffers */
-
- mp->tx_ring = dma_alloc_coherent(mp->device,
- N_TX_RING * MACE_BUFF_SIZE,
- &mp->tx_ring_phys, GFP_KERNEL);
- if (mp->tx_ring == NULL) {
- printk(KERN_ERR "%s: unable to allocate DMA tx buffers\n", dev->name);
- goto out1;
- }
-
- mp->rx_ring = dma_alloc_coherent(mp->device,
- N_RX_RING * MACE_BUFF_SIZE,
- &mp->rx_ring_phys, GFP_KERNEL);
- if (mp->rx_ring == NULL) {
- printk(KERN_ERR "%s: unable to allocate DMA rx buffers\n", dev->name);
- goto out2;
- }
-
- mace_dma_off(dev);
-
- /* Not sure what these do */
-
- psc_write_word(PSC_ENETWR_CTL, 0x9000);
- psc_write_word(PSC_ENETRD_CTL, 0x9000);
- psc_write_word(PSC_ENETWR_CTL, 0x0400);
- psc_write_word(PSC_ENETRD_CTL, 0x0400);
-
- mace_rxdma_reset(dev);
- mace_txdma_reset(dev);
-
- /* turn it on! */
- mb->maccc = ENXMT | ENRCV;
- /* enable all interrupts except receive interrupts */
- mb->imr = RCVINT;
- return 0;
-
-out2:
- dma_free_coherent(mp->device, N_TX_RING * MACE_BUFF_SIZE,
- mp->tx_ring, mp->tx_ring_phys);
-out1:
- free_irq(dev->irq, dev);
- free_irq(mp->dma_intr, dev);
- return -ENOMEM;
-}
-
-/*
- * Shut down the mace and its interrupt channel
- */
-
-static int mace_close(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mb = mp->mace;
-
- mb->maccc = 0; /* disable rx and tx */
- mb->imr = 0xFF; /* disable all irqs */
- mace_dma_off(dev); /* disable rx and tx dma */
-
- return 0;
-}
-
-/*
- * Transmit a frame
- */
-
-static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- unsigned long flags;
-
- /* Stop the queue since there's only the one buffer */
-
- local_irq_save(flags);
- netif_stop_queue(dev);
- if (!mp->tx_count) {
- printk(KERN_ERR "macmace: tx queue running but no free buffers.\n");
- local_irq_restore(flags);
- return NETDEV_TX_BUSY;
- }
- mp->tx_count--;
- local_irq_restore(flags);
-
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
-
- /* We need to copy into our xmit buffer to take care of alignment and caching issues */
- skb_copy_from_linear_data(skb, mp->tx_ring, skb->len);
-
- /* load the Tx DMA and fire it off */
-
- psc_write_long(PSC_ENETWR_ADDR + mp->tx_slot, (u32) mp->tx_ring_phys);
- psc_write_long(PSC_ENETWR_LEN + mp->tx_slot, skb->len);
- psc_write_word(PSC_ENETWR_CMD + mp->tx_slot, 0x9800);
-
- mp->tx_slot ^= 0x10;
-
- dev_kfree_skb(skb);
-
- return NETDEV_TX_OK;
-}
-
-static void mace_set_multicast(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mb = mp->mace;
- int i;
- u32 crc;
- u8 maccc;
- unsigned long flags;
-
- local_irq_save(flags);
- maccc = mb->maccc;
- mb->maccc &= ~PROM;
-
- if (dev->flags & IFF_PROMISC) {
- mb->maccc |= PROM;
- } else {
- unsigned char multicast_filter[8];
- struct netdev_hw_addr *ha;
-
- if (dev->flags & IFF_ALLMULTI) {
- for (i = 0; i < 8; i++) {
- multicast_filter[i] = 0xFF;
- }
- } else {
- for (i = 0; i < 8; i++)
- multicast_filter[i] = 0;
- netdev_for_each_mc_addr(ha, dev) {
- crc = ether_crc_le(6, ha->addr);
- /* bit number in multicast_filter */
- i = crc >> 26;
- multicast_filter[i >> 3] |= 1 << (i & 7);
- }
- }
-
- if (mp->chipid == BROKEN_ADDRCHG_REV)
- mb->iac = LOGADDR;
- else {
- mb->iac = ADDRCHG | LOGADDR;
- while ((mb->iac & ADDRCHG) != 0)
- ;
- }
- for (i = 0; i < 8; ++i)
- mb->ladrf = multicast_filter[i];
- if (mp->chipid != BROKEN_ADDRCHG_REV)
- mb->iac = 0;
- }
-
- mb->maccc = maccc;
- local_irq_restore(flags);
-}
-
-static void mace_handle_misc_intrs(struct net_device *dev, int intr)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mb = mp->mace;
- static int mace_babbles, mace_jabbers;
-
- if (intr & MPCO)
- dev->stats.rx_missed_errors += 256;
- dev->stats.rx_missed_errors += mb->mpc; /* reading clears it */
- if (intr & RNTPCO)
- dev->stats.rx_length_errors += 256;
- dev->stats.rx_length_errors += mb->rntpc; /* reading clears it */
- if (intr & CERR)
- ++dev->stats.tx_heartbeat_errors;
- if (intr & BABBLE)
- if (mace_babbles++ < 4)
- printk(KERN_DEBUG "macmace: babbling transmitter\n");
- if (intr & JABBER)
- if (mace_jabbers++ < 4)
- printk(KERN_DEBUG "macmace: jabbering transceiver\n");
-}
-
-static irqreturn_t mace_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mb = mp->mace;
- int intr, fs;
- unsigned long flags;
-
- /* don't want the dma interrupt handler to fire */
- local_irq_save(flags);
-
- intr = mb->ir; /* read interrupt register */
- mace_handle_misc_intrs(dev, intr);
-
- if (intr & XMTINT) {
- fs = mb->xmtfs;
- if ((fs & XMTSV) == 0) {
- printk(KERN_ERR "macmace: xmtfs not valid! (fs=%x)\n", fs);
- mace_reset(dev);
- /*
- * XXX mace likes to hang the machine after a xmtfs error.
- * This is hard to reproduce, reseting *may* help
- */
- }
- /* dma should have finished */
- if (!mp->tx_count) {
- printk(KERN_DEBUG "macmace: tx ring ran out? (fs=%x)\n", fs);
- }
- /* Update stats */
- if (fs & (UFLO|LCOL|LCAR|RTRY)) {
- ++dev->stats.tx_errors;
- if (fs & LCAR)
- ++dev->stats.tx_carrier_errors;
- else if (fs & (UFLO|LCOL|RTRY)) {
- ++dev->stats.tx_aborted_errors;
- if (mb->xmtfs & UFLO) {
- printk(KERN_ERR "%s: DMA underrun.\n", dev->name);
- dev->stats.tx_fifo_errors++;
- mace_txdma_reset(dev);
- }
- }
- }
- }
-
- if (mp->tx_count)
- netif_wake_queue(dev);
-
- local_irq_restore(flags);
-
- return IRQ_HANDLED;
-}
-
-static void mace_tx_timeout(struct net_device *dev)
-{
- struct mace_data *mp = netdev_priv(dev);
- volatile struct mace *mb = mp->mace;
- unsigned long flags;
-
- local_irq_save(flags);
-
- /* turn off both tx and rx and reset the chip */
- mb->maccc = 0;
- printk(KERN_ERR "macmace: transmit timeout - resetting\n");
- mace_txdma_reset(dev);
- mace_reset(dev);
-
- /* restart rx dma */
- mace_rxdma_reset(dev);
-
- mp->tx_count = N_TX_RING;
- netif_wake_queue(dev);
-
- /* turn it on! */
- mb->maccc = ENXMT | ENRCV;
- /* enable all interrupts except receive interrupts */
- mb->imr = RCVINT;
-
- local_irq_restore(flags);
-}
-
-/*
- * Handle a newly arrived frame
- */
-
-static void mace_dma_rx_frame(struct net_device *dev, struct mace_frame *mf)
-{
- struct sk_buff *skb;
- unsigned int frame_status = mf->rcvsts;
-
- if (frame_status & (RS_OFLO | RS_CLSN | RS_FRAMERR | RS_FCSERR)) {
- dev->stats.rx_errors++;
- if (frame_status & RS_OFLO) {
- printk(KERN_DEBUG "%s: fifo overflow.\n", dev->name);
- dev->stats.rx_fifo_errors++;
- }
- if (frame_status & RS_CLSN)
- dev->stats.collisions++;
- if (frame_status & RS_FRAMERR)
- dev->stats.rx_frame_errors++;
- if (frame_status & RS_FCSERR)
- dev->stats.rx_crc_errors++;
- } else {
- unsigned int frame_length = mf->rcvcnt + ((frame_status & 0x0F) << 8 );
-
- skb = dev_alloc_skb(frame_length + 2);
- if (!skb) {
- dev->stats.rx_dropped++;
- return;
- }
- skb_reserve(skb, 2);
- memcpy(skb_put(skb, frame_length), mf->data, frame_length);
-
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += frame_length;
- }
-}
-
-/*
- * The PSC has passed us a DMA interrupt event.
- */
-
-static irqreturn_t mace_dma_intr(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct mace_data *mp = netdev_priv(dev);
- int left, head;
- u16 status;
- u32 baka;
-
- /* Not sure what this does */
-
- while ((baka = psc_read_long(PSC_MYSTERY)) != psc_read_long(PSC_MYSTERY));
- if (!(baka & 0x60000000)) return IRQ_NONE;
-
- /*
- * Process the read queue
- */
-
- status = psc_read_word(PSC_ENETRD_CTL);
-
- if (status & 0x2000) {
- mace_rxdma_reset(dev);
- } else if (status & 0x0100) {
- psc_write_word(PSC_ENETRD_CMD + mp->rx_slot, 0x1100);
-
- left = psc_read_long(PSC_ENETRD_LEN + mp->rx_slot);
- head = N_RX_RING - left;
-
- /* Loop through the ring buffer and process new packages */
-
- while (mp->rx_tail < head) {
- mace_dma_rx_frame(dev, (struct mace_frame*) (mp->rx_ring
- + (mp->rx_tail * MACE_BUFF_SIZE)));
- mp->rx_tail++;
- }
-
- /* If we're out of buffers in this ring then switch to */
- /* the other set, otherwise just reactivate this one. */
-
- if (!left) {
- mace_load_rxdma_base(dev, mp->rx_slot);
- mp->rx_slot ^= 0x10;
- } else {
- psc_write_word(PSC_ENETRD_CMD + mp->rx_slot, 0x9800);
- }
- }
-
- /*
- * Process the write queue
- */
-
- status = psc_read_word(PSC_ENETWR_CTL);
-
- if (status & 0x2000) {
- mace_txdma_reset(dev);
- } else if (status & 0x0100) {
- psc_write_word(PSC_ENETWR_CMD + mp->tx_sloti, 0x0100);
- mp->tx_sloti ^= 0x10;
- mp->tx_count++;
- }
- return IRQ_HANDLED;
-}
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Macintosh MACE ethernet driver");
-MODULE_ALIAS("platform:macmace");
-
-static int __devexit mac_mace_device_remove (struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct mace_data *mp = netdev_priv(dev);
-
- unregister_netdev(dev);
-
- free_irq(dev->irq, dev);
- free_irq(IRQ_MAC_MACE_DMA, dev);
-
- dma_free_coherent(mp->device, N_RX_RING * MACE_BUFF_SIZE,
- mp->rx_ring, mp->rx_ring_phys);
- dma_free_coherent(mp->device, N_TX_RING * MACE_BUFF_SIZE,
- mp->tx_ring, mp->tx_ring_phys);
-
- free_netdev(dev);
-
- return 0;
-}
-
-static struct platform_driver mac_mace_driver = {
- .probe = mace_probe,
- .remove = __devexit_p(mac_mace_device_remove),
- .driver = {
- .name = mac_mace_string,
- .owner = THIS_MODULE,
- },
-};
-
-static int __init mac_mace_init_module(void)
-{
- if (!MACH_IS_MAC)
- return -ENODEV;
-
- return platform_driver_register(&mac_mace_driver);
-}
-
-static void __exit mac_mace_cleanup_module(void)
-{
- platform_driver_unregister(&mac_mace_driver);
-}
-
-module_init(mac_mace_init_module);
-module_exit(mac_mace_cleanup_module);
projects / deliverable / linux.git / commitdiff
