2 * This code is derived from the VIA reference driver (copyright message
3 * below) provided to Red Hat by VIA Networking Technologies, Inc. for
4 * addition to the Linux kernel.
6 * The code has been merged into one source file, cleaned up to follow
7 * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned
8 * for 64bit hardware platforms.
12 * rx_copybreak/alignment
16 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@redhat.com>
17 * Additional fixes and clean up: Francois Romieu
19 * This source has not been verified for use in safety critical systems.
21 * Please direct queries about the revamped driver to the linux-kernel
26 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
27 * All rights reserved.
29 * This software may be redistributed and/or modified under
30 * the terms of the GNU General Public License as published by the Free
31 * Software Foundation; either version 2 of the License, or
34 * This program is distributed in the hope that it will be useful, but
35 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
36 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
39 * Author: Chuang Liang-Shing, AJ Jiang
43 * MODULE_LICENSE("GPL");
48 #include <linux/module.h>
49 #include <linux/types.h>
50 #include <linux/init.h>
52 #include <linux/errno.h>
53 #include <linux/ioport.h>
54 #include <linux/pci.h>
55 #include <linux/kernel.h>
56 #include <linux/netdevice.h>
57 #include <linux/etherdevice.h>
58 #include <linux/skbuff.h>
59 #include <linux/delay.h>
60 #include <linux/timer.h>
61 #include <linux/slab.h>
62 #include <linux/interrupt.h>
63 #include <linux/string.h>
64 #include <linux/wait.h>
67 #include <asm/uaccess.h>
68 #include <linux/proc_fs.h>
69 #include <linux/inetdevice.h>
70 #include <linux/reboot.h>
71 #include <linux/ethtool.h>
72 #include <linux/mii.h>
74 #include <linux/if_arp.h>
76 #include <linux/tcp.h>
77 #include <linux/udp.h>
78 #include <linux/crc-ccitt.h>
79 #include <linux/crc32.h>
81 #include "via-velocity.h"
84 static int velocity_nics
= 0;
85 static int msglevel
= MSG_LEVEL_INFO
;
88 static int velocity_mii_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
);
89 static struct ethtool_ops velocity_ethtool_ops
;
95 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
96 MODULE_LICENSE("GPL");
97 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
99 #define VELOCITY_PARAM(N,D) \
100 static int N[MAX_UNITS]=OPTION_DEFAULT;\
101 module_param_array(N, int, NULL, 0); \
102 MODULE_PARM_DESC(N, D);
104 #define RX_DESC_MIN 64
105 #define RX_DESC_MAX 255
106 #define RX_DESC_DEF 64
107 VELOCITY_PARAM(RxDescriptors
, "Number of receive descriptors");
109 #define TX_DESC_MIN 16
110 #define TX_DESC_MAX 256
111 #define TX_DESC_DEF 64
112 VELOCITY_PARAM(TxDescriptors
, "Number of transmit descriptors");
114 #define VLAN_ID_MIN 0
115 #define VLAN_ID_MAX 4095
116 #define VLAN_ID_DEF 0
117 /* VID_setting[] is used for setting the VID of NIC.
121 VELOCITY_PARAM(VID_setting
, "802.1Q VLAN ID");
123 #define RX_THRESH_MIN 0
124 #define RX_THRESH_MAX 3
125 #define RX_THRESH_DEF 0
126 /* rx_thresh[] is used for controlling the receive fifo threshold.
127 0: indicate the rxfifo threshold is 128 bytes.
128 1: indicate the rxfifo threshold is 512 bytes.
129 2: indicate the rxfifo threshold is 1024 bytes.
130 3: indicate the rxfifo threshold is store & forward.
132 VELOCITY_PARAM(rx_thresh
, "Receive fifo threshold");
134 #define DMA_LENGTH_MIN 0
135 #define DMA_LENGTH_MAX 7
136 #define DMA_LENGTH_DEF 0
138 /* DMA_length[] is used for controlling the DMA length
145 6: SF(flush till emply)
146 7: SF(flush till emply)
148 VELOCITY_PARAM(DMA_length
, "DMA length");
150 #define TAGGING_DEF 0
151 /* enable_tagging[] is used for enabling 802.1Q VID tagging.
152 0: disable VID seeting(default).
153 1: enable VID setting.
155 VELOCITY_PARAM(enable_tagging
, "Enable 802.1Q tagging");
157 #define IP_ALIG_DEF 0
158 /* IP_byte_align[] is used for IP header DWORD byte aligned
159 0: indicate the IP header won't be DWORD byte aligned.(Default) .
160 1: indicate the IP header will be DWORD byte aligned.
161 In some enviroment, the IP header should be DWORD byte aligned,
162 or the packet will be droped when we receive it. (eg: IPVS)
164 VELOCITY_PARAM(IP_byte_align
, "Enable IP header dword aligned");
166 #define TX_CSUM_DEF 1
167 /* txcsum_offload[] is used for setting the checksum offload ability of NIC.
168 (We only support RX checksum offload now)
169 0: disable csum_offload[checksum offload
170 1: enable checksum offload. (Default)
172 VELOCITY_PARAM(txcsum_offload
, "Enable transmit packet checksum offload");
174 #define FLOW_CNTL_DEF 1
175 #define FLOW_CNTL_MIN 1
176 #define FLOW_CNTL_MAX 5
178 /* flow_control[] is used for setting the flow control ability of NIC.
179 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
180 2: enable TX flow control.
181 3: enable RX flow control.
182 4: enable RX/TX flow control.
185 VELOCITY_PARAM(flow_control
, "Enable flow control ability");
187 #define MED_LNK_DEF 0
188 #define MED_LNK_MIN 0
189 #define MED_LNK_MAX 4
190 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
191 0: indicate autonegotiation for both speed and duplex mode
192 1: indicate 100Mbps half duplex mode
193 2: indicate 100Mbps full duplex mode
194 3: indicate 10Mbps half duplex mode
195 4: indicate 10Mbps full duplex mode
198 if EEPROM have been set to the force mode, this option is ignored
201 VELOCITY_PARAM(speed_duplex
, "Setting the speed and duplex mode");
203 #define VAL_PKT_LEN_DEF 0
204 /* ValPktLen[] is used for setting the checksum offload ability of NIC.
205 0: Receive frame with invalid layer 2 length (Default)
206 1: Drop frame with invalid layer 2 length
208 VELOCITY_PARAM(ValPktLen
, "Receiving or Drop invalid 802.3 frame");
210 #define WOL_OPT_DEF 0
211 #define WOL_OPT_MIN 0
212 #define WOL_OPT_MAX 7
213 /* wol_opts[] is used for controlling wake on lan behavior.
214 0: Wake up if recevied a magic packet. (Default)
215 1: Wake up if link status is on/off.
216 2: Wake up if recevied an arp packet.
217 4: Wake up if recevied any unicast packet.
218 Those value can be sumed up to support more than one option.
220 VELOCITY_PARAM(wol_opts
, "Wake On Lan options");
222 #define INT_WORKS_DEF 20
223 #define INT_WORKS_MIN 10
224 #define INT_WORKS_MAX 64
226 VELOCITY_PARAM(int_works
, "Number of packets per interrupt services");
228 static int rx_copybreak
= 200;
229 module_param(rx_copybreak
, int, 0644);
230 MODULE_PARM_DESC(rx_copybreak
, "Copy breakpoint for copy-only-tiny-frames");
232 static void velocity_init_info(struct pci_dev
*pdev
, struct velocity_info
*vptr
, struct velocity_info_tbl
*info
);
233 static int velocity_get_pci_info(struct velocity_info
*, struct pci_dev
*pdev
);
234 static void velocity_print_info(struct velocity_info
*vptr
);
235 static int velocity_open(struct net_device
*dev
);
236 static int velocity_change_mtu(struct net_device
*dev
, int mtu
);
237 static int velocity_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
238 static int velocity_intr(int irq
, void *dev_instance
, struct pt_regs
*regs
);
239 static void velocity_set_multi(struct net_device
*dev
);
240 static struct net_device_stats
*velocity_get_stats(struct net_device
*dev
);
241 static int velocity_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
242 static int velocity_close(struct net_device
*dev
);
243 static int velocity_receive_frame(struct velocity_info
*, int idx
);
244 static int velocity_alloc_rx_buf(struct velocity_info
*, int idx
);
245 static void velocity_free_rd_ring(struct velocity_info
*vptr
);
246 static void velocity_free_tx_buf(struct velocity_info
*vptr
, struct velocity_td_info
*);
247 static int velocity_soft_reset(struct velocity_info
*vptr
);
248 static void mii_init(struct velocity_info
*vptr
, u32 mii_status
);
249 static u32
velocity_get_link(struct net_device
*dev
);
250 static u32
velocity_get_opt_media_mode(struct velocity_info
*vptr
);
251 static void velocity_print_link_status(struct velocity_info
*vptr
);
252 static void safe_disable_mii_autopoll(struct mac_regs __iomem
* regs
);
253 static void velocity_shutdown(struct velocity_info
*vptr
);
254 static void enable_flow_control_ability(struct velocity_info
*vptr
);
255 static void enable_mii_autopoll(struct mac_regs __iomem
* regs
);
256 static int velocity_mii_read(struct mac_regs __iomem
*, u8 byIdx
, u16
* pdata
);
257 static int velocity_mii_write(struct mac_regs __iomem
*, u8 byMiiAddr
, u16 data
);
258 static u32
mii_check_media_mode(struct mac_regs __iomem
* regs
);
259 static u32
check_connection_type(struct mac_regs __iomem
* regs
);
260 static int velocity_set_media_mode(struct velocity_info
*vptr
, u32 mii_status
);
264 static int velocity_suspend(struct pci_dev
*pdev
, pm_message_t state
);
265 static int velocity_resume(struct pci_dev
*pdev
);
267 static int velocity_netdev_event(struct notifier_block
*nb
, unsigned long notification
, void *ptr
);
269 static struct notifier_block velocity_inetaddr_notifier
= {
270 .notifier_call
= velocity_netdev_event
,
273 static DEFINE_SPINLOCK(velocity_dev_list_lock
);
274 static LIST_HEAD(velocity_dev_list
);
276 static void velocity_register_notifier(void)
278 register_inetaddr_notifier(&velocity_inetaddr_notifier
);
281 static void velocity_unregister_notifier(void)
283 unregister_inetaddr_notifier(&velocity_inetaddr_notifier
);
286 #else /* CONFIG_PM */
288 #define velocity_register_notifier() do {} while (0)
289 #define velocity_unregister_notifier() do {} while (0)
291 #endif /* !CONFIG_PM */
294 * Internal board variants. At the moment we have only one
297 static struct velocity_info_tbl chip_info_table
[] = {
298 {CHIP_TYPE_VT6110
, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 256, 1, 0x00FFFFFFUL
},
303 * Describe the PCI device identifiers that we support in this
304 * device driver. Used for hotplug autoloading.
307 static const struct pci_device_id velocity_id_table
[] __devinitdata
= {
308 { PCI_DEVICE(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_612X
) },
312 MODULE_DEVICE_TABLE(pci
, velocity_id_table
);
315 * get_chip_name - identifier to name
316 * @id: chip identifier
318 * Given a chip identifier return a suitable description. Returns
319 * a pointer a static string valid while the driver is loaded.
322 static char __devinit
*get_chip_name(enum chip_type chip_id
)
325 for (i
= 0; chip_info_table
[i
].name
!= NULL
; i
++)
326 if (chip_info_table
[i
].chip_id
== chip_id
)
328 return chip_info_table
[i
].name
;
332 * velocity_remove1 - device unplug
333 * @pdev: PCI device being removed
335 * Device unload callback. Called on an unplug or on module
336 * unload for each active device that is present. Disconnects
337 * the device from the network layer and frees all the resources
340 static void __devexit
velocity_remove1(struct pci_dev
*pdev
)
342 struct net_device
*dev
= pci_get_drvdata(pdev
);
343 struct velocity_info
*vptr
= netdev_priv(dev
);
348 spin_lock_irqsave(&velocity_dev_list_lock
, flags
);
349 if (!list_empty(&velocity_dev_list
))
350 list_del(&vptr
->list
);
351 spin_unlock_irqrestore(&velocity_dev_list_lock
, flags
);
353 unregister_netdev(dev
);
354 iounmap(vptr
->mac_regs
);
355 pci_release_regions(pdev
);
356 pci_disable_device(pdev
);
357 pci_set_drvdata(pdev
, NULL
);
364 * velocity_set_int_opt - parser for integer options
365 * @opt: pointer to option value
366 * @val: value the user requested (or -1 for default)
367 * @min: lowest value allowed
368 * @max: highest value allowed
369 * @def: default value
370 * @name: property name
373 * Set an integer property in the module options. This function does
374 * all the verification and checking as well as reporting so that
375 * we don't duplicate code for each option.
378 static void __devinit
velocity_set_int_opt(int *opt
, int val
, int min
, int max
, int def
, char *name
, char *devname
)
382 else if (val
< min
|| val
> max
) {
383 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_NOTICE
"%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
384 devname
, name
, min
, max
);
387 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_INFO
"%s: set value of parameter %s to %d\n",
394 * velocity_set_bool_opt - parser for boolean options
395 * @opt: pointer to option value
396 * @val: value the user requested (or -1 for default)
397 * @def: default value (yes/no)
398 * @flag: numeric value to set for true.
399 * @name: property name
402 * Set a boolean property in the module options. This function does
403 * all the verification and checking as well as reporting so that
404 * we don't duplicate code for each option.
407 static void __devinit
velocity_set_bool_opt(u32
* opt
, int val
, int def
, u32 flag
, char *name
, char *devname
)
411 *opt
|= (def
? flag
: 0);
412 else if (val
< 0 || val
> 1) {
413 printk(KERN_NOTICE
"%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
415 *opt
|= (def
? flag
: 0);
417 printk(KERN_INFO
"%s: set parameter %s to %s\n",
418 devname
, name
, val
? "TRUE" : "FALSE");
419 *opt
|= (val
? flag
: 0);
424 * velocity_get_options - set options on device
425 * @opts: option structure for the device
426 * @index: index of option to use in module options array
427 * @devname: device name
429 * Turn the module and command options into a single structure
430 * for the current device
433 static void __devinit
velocity_get_options(struct velocity_opt
*opts
, int index
, char *devname
)
436 velocity_set_int_opt(&opts
->rx_thresh
, rx_thresh
[index
], RX_THRESH_MIN
, RX_THRESH_MAX
, RX_THRESH_DEF
, "rx_thresh", devname
);
437 velocity_set_int_opt(&opts
->DMA_length
, DMA_length
[index
], DMA_LENGTH_MIN
, DMA_LENGTH_MAX
, DMA_LENGTH_DEF
, "DMA_length", devname
);
438 velocity_set_int_opt(&opts
->numrx
, RxDescriptors
[index
], RX_DESC_MIN
, RX_DESC_MAX
, RX_DESC_DEF
, "RxDescriptors", devname
);
439 velocity_set_int_opt(&opts
->numtx
, TxDescriptors
[index
], TX_DESC_MIN
, TX_DESC_MAX
, TX_DESC_DEF
, "TxDescriptors", devname
);
440 velocity_set_int_opt(&opts
->vid
, VID_setting
[index
], VLAN_ID_MIN
, VLAN_ID_MAX
, VLAN_ID_DEF
, "VID_setting", devname
);
441 velocity_set_bool_opt(&opts
->flags
, enable_tagging
[index
], TAGGING_DEF
, VELOCITY_FLAGS_TAGGING
, "enable_tagging", devname
);
442 velocity_set_bool_opt(&opts
->flags
, txcsum_offload
[index
], TX_CSUM_DEF
, VELOCITY_FLAGS_TX_CSUM
, "txcsum_offload", devname
);
443 velocity_set_int_opt(&opts
->flow_cntl
, flow_control
[index
], FLOW_CNTL_MIN
, FLOW_CNTL_MAX
, FLOW_CNTL_DEF
, "flow_control", devname
);
444 velocity_set_bool_opt(&opts
->flags
, IP_byte_align
[index
], IP_ALIG_DEF
, VELOCITY_FLAGS_IP_ALIGN
, "IP_byte_align", devname
);
445 velocity_set_bool_opt(&opts
->flags
, ValPktLen
[index
], VAL_PKT_LEN_DEF
, VELOCITY_FLAGS_VAL_PKT_LEN
, "ValPktLen", devname
);
446 velocity_set_int_opt((int *) &opts
->spd_dpx
, speed_duplex
[index
], MED_LNK_MIN
, MED_LNK_MAX
, MED_LNK_DEF
, "Media link mode", devname
);
447 velocity_set_int_opt((int *) &opts
->wol_opts
, wol_opts
[index
], WOL_OPT_MIN
, WOL_OPT_MAX
, WOL_OPT_DEF
, "Wake On Lan options", devname
);
448 velocity_set_int_opt((int *) &opts
->int_works
, int_works
[index
], INT_WORKS_MIN
, INT_WORKS_MAX
, INT_WORKS_DEF
, "Interrupt service works", devname
);
449 opts
->numrx
= (opts
->numrx
& ~3);
453 * velocity_init_cam_filter - initialise CAM
454 * @vptr: velocity to program
456 * Initialize the content addressable memory used for filters. Load
457 * appropriately according to the presence of VLAN
460 static void velocity_init_cam_filter(struct velocity_info
*vptr
)
462 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
464 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
465 WORD_REG_BITS_SET(MCFG_PQEN
, MCFG_RTGOPT
, ®s
->MCFG
);
466 WORD_REG_BITS_ON(MCFG_VIDFR
, ®s
->MCFG
);
468 /* Disable all CAMs */
469 memset(vptr
->vCAMmask
, 0, sizeof(u8
) * 8);
470 memset(vptr
->mCAMmask
, 0, sizeof(u8
) * 8);
471 mac_set_cam_mask(regs
, vptr
->vCAMmask
, VELOCITY_VLAN_ID_CAM
);
472 mac_set_cam_mask(regs
, vptr
->mCAMmask
, VELOCITY_MULTICAST_CAM
);
474 /* Enable first VCAM */
475 if (vptr
->flags
& VELOCITY_FLAGS_TAGGING
) {
476 /* If Tagging option is enabled and VLAN ID is not zero, then
477 turn on MCFG_RTGOPT also */
478 if (vptr
->options
.vid
!= 0)
479 WORD_REG_BITS_ON(MCFG_RTGOPT
, ®s
->MCFG
);
481 mac_set_cam(regs
, 0, (u8
*) & (vptr
->options
.vid
), VELOCITY_VLAN_ID_CAM
);
482 vptr
->vCAMmask
[0] |= 1;
483 mac_set_cam_mask(regs
, vptr
->vCAMmask
, VELOCITY_VLAN_ID_CAM
);
486 mac_set_cam(regs
, 0, (u8
*) &temp
, VELOCITY_VLAN_ID_CAM
);
488 mac_set_cam_mask(regs
, (u8
*) &temp
, VELOCITY_VLAN_ID_CAM
);
493 * velocity_rx_reset - handle a receive reset
494 * @vptr: velocity we are resetting
496 * Reset the ownership and status for the receive ring side.
497 * Hand all the receive queue to the NIC.
500 static void velocity_rx_reset(struct velocity_info
*vptr
)
503 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
506 vptr
->rd_dirty
= vptr
->rd_filled
= vptr
->rd_curr
= 0;
509 * Init state, all RD entries belong to the NIC
511 for (i
= 0; i
< vptr
->options
.numrx
; ++i
)
512 vptr
->rd_ring
[i
].rdesc0
.owner
= OWNED_BY_NIC
;
514 writew(vptr
->options
.numrx
, ®s
->RBRDU
);
515 writel(vptr
->rd_pool_dma
, ®s
->RDBaseLo
);
516 writew(0, ®s
->RDIdx
);
517 writew(vptr
->options
.numrx
- 1, ®s
->RDCSize
);
521 * velocity_init_registers - initialise MAC registers
522 * @vptr: velocity to init
523 * @type: type of initialisation (hot or cold)
525 * Initialise the MAC on a reset or on first set up on the
529 static void velocity_init_registers(struct velocity_info
*vptr
,
530 enum velocity_init_type type
)
532 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
538 case VELOCITY_INIT_RESET
:
539 case VELOCITY_INIT_WOL
:
541 netif_stop_queue(vptr
->dev
);
544 * Reset RX to prevent RX pointer not on the 4X location
546 velocity_rx_reset(vptr
);
547 mac_rx_queue_run(regs
);
548 mac_rx_queue_wake(regs
);
550 mii_status
= velocity_get_opt_media_mode(vptr
);
551 if (velocity_set_media_mode(vptr
, mii_status
) != VELOCITY_LINK_CHANGE
) {
552 velocity_print_link_status(vptr
);
553 if (!(vptr
->mii_status
& VELOCITY_LINK_FAIL
))
554 netif_wake_queue(vptr
->dev
);
557 enable_flow_control_ability(vptr
);
560 writel(CR0_STOP
, ®s
->CR0Clr
);
561 writel((CR0_DPOLL
| CR0_TXON
| CR0_RXON
| CR0_STRT
),
566 case VELOCITY_INIT_COLD
:
571 velocity_soft_reset(vptr
);
574 mac_eeprom_reload(regs
);
575 for (i
= 0; i
< 6; i
++) {
576 writeb(vptr
->dev
->dev_addr
[i
], &(regs
->PAR
[i
]));
579 * clear Pre_ACPI bit.
581 BYTE_REG_BITS_OFF(CFGA_PACPI
, &(regs
->CFGA
));
582 mac_set_rx_thresh(regs
, vptr
->options
.rx_thresh
);
583 mac_set_dma_length(regs
, vptr
->options
.DMA_length
);
585 writeb(WOLCFG_SAM
| WOLCFG_SAB
, ®s
->WOLCFGSet
);
587 * Back off algorithm use original IEEE standard
589 BYTE_REG_BITS_SET(CFGB_OFSET
, (CFGB_CRANDOM
| CFGB_CAP
| CFGB_MBA
| CFGB_BAKOPT
), ®s
->CFGB
);
594 velocity_init_cam_filter(vptr
);
597 * Set packet filter: Receive directed and broadcast address
599 velocity_set_multi(vptr
->dev
);
602 * Enable MII auto-polling
604 enable_mii_autopoll(regs
);
606 vptr
->int_mask
= INT_MASK_DEF
;
608 writel(cpu_to_le32(vptr
->rd_pool_dma
), ®s
->RDBaseLo
);
609 writew(vptr
->options
.numrx
- 1, ®s
->RDCSize
);
610 mac_rx_queue_run(regs
);
611 mac_rx_queue_wake(regs
);
613 writew(vptr
->options
.numtx
- 1, ®s
->TDCSize
);
615 for (i
= 0; i
< vptr
->num_txq
; i
++) {
616 writel(cpu_to_le32(vptr
->td_pool_dma
[i
]), &(regs
->TDBaseLo
[i
]));
617 mac_tx_queue_run(regs
, i
);
620 init_flow_control_register(vptr
);
622 writel(CR0_STOP
, ®s
->CR0Clr
);
623 writel((CR0_DPOLL
| CR0_TXON
| CR0_RXON
| CR0_STRT
), ®s
->CR0Set
);
625 mii_status
= velocity_get_opt_media_mode(vptr
);
626 netif_stop_queue(vptr
->dev
);
628 mii_init(vptr
, mii_status
);
630 if (velocity_set_media_mode(vptr
, mii_status
) != VELOCITY_LINK_CHANGE
) {
631 velocity_print_link_status(vptr
);
632 if (!(vptr
->mii_status
& VELOCITY_LINK_FAIL
))
633 netif_wake_queue(vptr
->dev
);
636 enable_flow_control_ability(vptr
);
637 mac_hw_mibs_init(regs
);
638 mac_write_int_mask(vptr
->int_mask
, regs
);
645 * velocity_soft_reset - soft reset
646 * @vptr: velocity to reset
648 * Kick off a soft reset of the velocity adapter and then poll
649 * until the reset sequence has completed before returning.
652 static int velocity_soft_reset(struct velocity_info
*vptr
)
654 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
657 writel(CR0_SFRST
, ®s
->CR0Set
);
659 for (i
= 0; i
< W_MAX_TIMEOUT
; i
++) {
661 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST
, ®s
->CR0Set
))
665 if (i
== W_MAX_TIMEOUT
) {
666 writel(CR0_FORSRST
, ®s
->CR0Set
);
667 /* FIXME: PCI POSTING */
675 * velocity_found1 - set up discovered velocity card
677 * @ent: PCI device table entry that matched
679 * Configure a discovered adapter from scratch. Return a negative
680 * errno error code on failure paths.
683 static int __devinit
velocity_found1(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
685 static int first
= 1;
686 struct net_device
*dev
;
688 struct velocity_info_tbl
*info
= &chip_info_table
[ent
->driver_data
];
689 struct velocity_info
*vptr
;
690 struct mac_regs __iomem
* regs
;
693 /* FIXME: this driver, like almost all other ethernet drivers,
694 * can support more than MAX_UNITS.
696 if (velocity_nics
>= MAX_UNITS
) {
697 dev_printk(KERN_NOTICE
, &pdev
->dev
, "already found %d NICs.\n",
702 dev
= alloc_etherdev(sizeof(struct velocity_info
));
704 dev_printk(KERN_ERR
, &pdev
->dev
, "allocate net device failed.\n");
708 /* Chain it all together */
710 SET_MODULE_OWNER(dev
);
711 SET_NETDEV_DEV(dev
, &pdev
->dev
);
712 vptr
= netdev_priv(dev
);
716 printk(KERN_INFO
"%s Ver. %s\n",
717 VELOCITY_FULL_DRV_NAM
, VELOCITY_VERSION
);
718 printk(KERN_INFO
"Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
719 printk(KERN_INFO
"Copyright (c) 2004 Red Hat Inc.\n");
723 velocity_init_info(pdev
, vptr
, info
);
727 dev
->irq
= pdev
->irq
;
729 ret
= pci_enable_device(pdev
);
733 ret
= velocity_get_pci_info(vptr
, pdev
);
735 /* error message already printed */
739 ret
= pci_request_regions(pdev
, VELOCITY_NAME
);
741 dev_printk(KERN_ERR
, &pdev
->dev
, "No PCI resources.\n");
745 regs
= ioremap(vptr
->memaddr
, vptr
->io_size
);
748 goto err_release_res
;
751 vptr
->mac_regs
= regs
;
755 dev
->base_addr
= vptr
->ioaddr
;
757 for (i
= 0; i
< 6; i
++)
758 dev
->dev_addr
[i
] = readb(®s
->PAR
[i
]);
761 velocity_get_options(&vptr
->options
, velocity_nics
, dev
->name
);
764 * Mask out the options cannot be set to the chip
767 vptr
->options
.flags
&= info
->flags
;
770 * Enable the chip specified capbilities
773 vptr
->flags
= vptr
->options
.flags
| (info
->flags
& 0xFF000000UL
);
775 vptr
->wol_opts
= vptr
->options
.wol_opts
;
776 vptr
->flags
|= VELOCITY_FLAGS_WOL_ENABLED
;
778 vptr
->phy_id
= MII_GET_PHY_ID(vptr
->mac_regs
);
780 dev
->irq
= pdev
->irq
;
781 dev
->open
= velocity_open
;
782 dev
->hard_start_xmit
= velocity_xmit
;
783 dev
->stop
= velocity_close
;
784 dev
->get_stats
= velocity_get_stats
;
785 dev
->set_multicast_list
= velocity_set_multi
;
786 dev
->do_ioctl
= velocity_ioctl
;
787 dev
->ethtool_ops
= &velocity_ethtool_ops
;
788 dev
->change_mtu
= velocity_change_mtu
;
789 #ifdef VELOCITY_ZERO_COPY_SUPPORT
790 dev
->features
|= NETIF_F_SG
;
793 if (vptr
->flags
& VELOCITY_FLAGS_TX_CSUM
) {
794 dev
->features
|= NETIF_F_IP_CSUM
;
797 ret
= register_netdev(dev
);
801 if (velocity_get_link(dev
))
802 netif_carrier_off(dev
);
804 velocity_print_info(vptr
);
805 pci_set_drvdata(pdev
, dev
);
807 /* and leave the chip powered down */
809 pci_set_power_state(pdev
, PCI_D3hot
);
814 spin_lock_irqsave(&velocity_dev_list_lock
, flags
);
815 list_add(&vptr
->list
, &velocity_dev_list
);
816 spin_unlock_irqrestore(&velocity_dev_list_lock
, flags
);
826 pci_release_regions(pdev
);
828 pci_disable_device(pdev
);
835 * velocity_print_info - per driver data
838 * Print per driver data as the kernel driver finds Velocity
842 static void __devinit
velocity_print_info(struct velocity_info
*vptr
)
844 struct net_device
*dev
= vptr
->dev
;
846 printk(KERN_INFO
"%s: %s\n", dev
->name
, get_chip_name(vptr
->chip_id
));
847 printk(KERN_INFO
"%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
849 dev
->dev_addr
[0], dev
->dev_addr
[1], dev
->dev_addr
[2],
850 dev
->dev_addr
[3], dev
->dev_addr
[4], dev
->dev_addr
[5]);
854 * velocity_init_info - init private data
856 * @vptr: Velocity info
859 * Set up the initial velocity_info struct for the device that has been
863 static void __devinit
velocity_init_info(struct pci_dev
*pdev
, struct velocity_info
*vptr
, struct velocity_info_tbl
*info
)
865 memset(vptr
, 0, sizeof(struct velocity_info
));
868 vptr
->chip_id
= info
->chip_id
;
869 vptr
->io_size
= info
->io_size
;
870 vptr
->num_txq
= info
->txqueue
;
871 vptr
->multicast_limit
= MCAM_SIZE
;
872 spin_lock_init(&vptr
->lock
);
873 INIT_LIST_HEAD(&vptr
->list
);
877 * velocity_get_pci_info - retrieve PCI info for device
878 * @vptr: velocity device
879 * @pdev: PCI device it matches
881 * Retrieve the PCI configuration space data that interests us from
882 * the kernel PCI layer
885 static int __devinit
velocity_get_pci_info(struct velocity_info
*vptr
, struct pci_dev
*pdev
)
887 if (pci_read_config_byte(pdev
, PCI_REVISION_ID
, &vptr
->rev_id
) < 0)
890 pci_set_master(pdev
);
892 vptr
->ioaddr
= pci_resource_start(pdev
, 0);
893 vptr
->memaddr
= pci_resource_start(pdev
, 1);
895 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_IO
)) {
896 dev_printk(KERN_ERR
, &pdev
->dev
,
897 "region #0 is not an I/O resource, aborting.\n");
901 if ((pci_resource_flags(pdev
, 1) & IORESOURCE_IO
)) {
902 dev_printk(KERN_ERR
, &pdev
->dev
,
903 "region #1 is an I/O resource, aborting.\n");
907 if (pci_resource_len(pdev
, 1) < 256) {
908 dev_printk(KERN_ERR
, &pdev
->dev
, "region #1 is too small.\n");
917 * velocity_init_rings - set up DMA rings
918 * @vptr: Velocity to set up
920 * Allocate PCI mapped DMA rings for the receive and transmit layer
924 static int velocity_init_rings(struct velocity_info
*vptr
)
933 * Allocate all RD/TD rings a single pool
936 psize
= vptr
->options
.numrx
* sizeof(struct rx_desc
) +
937 vptr
->options
.numtx
* sizeof(struct tx_desc
) * vptr
->num_txq
;
940 * pci_alloc_consistent() fulfills the requirement for 64 bytes
943 pool
= pci_alloc_consistent(vptr
->pdev
, psize
, &pool_dma
);
946 printk(KERN_ERR
"%s : DMA memory allocation failed.\n",
951 memset(pool
, 0, psize
);
953 vptr
->rd_ring
= (struct rx_desc
*) pool
;
955 vptr
->rd_pool_dma
= pool_dma
;
957 tsize
= vptr
->options
.numtx
* PKT_BUF_SZ
* vptr
->num_txq
;
958 vptr
->tx_bufs
= pci_alloc_consistent(vptr
->pdev
, tsize
,
961 if (vptr
->tx_bufs
== NULL
) {
962 printk(KERN_ERR
"%s: DMA memory allocation failed.\n",
964 pci_free_consistent(vptr
->pdev
, psize
, pool
, pool_dma
);
968 memset(vptr
->tx_bufs
, 0, vptr
->options
.numtx
* PKT_BUF_SZ
* vptr
->num_txq
);
970 i
= vptr
->options
.numrx
* sizeof(struct rx_desc
);
973 for (i
= 0; i
< vptr
->num_txq
; i
++) {
974 int offset
= vptr
->options
.numtx
* sizeof(struct tx_desc
);
976 vptr
->td_pool_dma
[i
] = pool_dma
;
977 vptr
->td_rings
[i
] = (struct tx_desc
*) pool
;
985 * velocity_free_rings - free PCI ring pointers
986 * @vptr: Velocity to free from
988 * Clean up the PCI ring buffers allocated to this velocity.
991 static void velocity_free_rings(struct velocity_info
*vptr
)
995 size
= vptr
->options
.numrx
* sizeof(struct rx_desc
) +
996 vptr
->options
.numtx
* sizeof(struct tx_desc
) * vptr
->num_txq
;
998 pci_free_consistent(vptr
->pdev
, size
, vptr
->rd_ring
, vptr
->rd_pool_dma
);
1000 size
= vptr
->options
.numtx
* PKT_BUF_SZ
* vptr
->num_txq
;
1002 pci_free_consistent(vptr
->pdev
, size
, vptr
->tx_bufs
, vptr
->tx_bufs_dma
);
1005 static inline void velocity_give_many_rx_descs(struct velocity_info
*vptr
)
1007 struct mac_regs __iomem
*regs
= vptr
->mac_regs
;
1008 int avail
, dirty
, unusable
;
1011 * RD number must be equal to 4X per hardware spec
1012 * (programming guide rev 1.20, p.13)
1014 if (vptr
->rd_filled
< 4)
1019 unusable
= vptr
->rd_filled
& 0x0003;
1020 dirty
= vptr
->rd_dirty
- unusable
;
1021 for (avail
= vptr
->rd_filled
& 0xfffc; avail
; avail
--) {
1022 dirty
= (dirty
> 0) ? dirty
- 1 : vptr
->options
.numrx
- 1;
1023 vptr
->rd_ring
[dirty
].rdesc0
.owner
= OWNED_BY_NIC
;
1026 writew(vptr
->rd_filled
& 0xfffc, ®s
->RBRDU
);
1027 vptr
->rd_filled
= unusable
;
1030 static int velocity_rx_refill(struct velocity_info
*vptr
)
1032 int dirty
= vptr
->rd_dirty
, done
= 0, ret
= 0;
1035 struct rx_desc
*rd
= vptr
->rd_ring
+ dirty
;
1037 /* Fine for an all zero Rx desc at init time as well */
1038 if (rd
->rdesc0
.owner
== OWNED_BY_NIC
)
1041 if (!vptr
->rd_info
[dirty
].skb
) {
1042 ret
= velocity_alloc_rx_buf(vptr
, dirty
);
1047 dirty
= (dirty
< vptr
->options
.numrx
- 1) ? dirty
+ 1 : 0;
1048 } while (dirty
!= vptr
->rd_curr
);
1051 vptr
->rd_dirty
= dirty
;
1052 vptr
->rd_filled
+= done
;
1053 velocity_give_many_rx_descs(vptr
);
1060 * velocity_init_rd_ring - set up receive ring
1061 * @vptr: velocity to configure
1063 * Allocate and set up the receive buffers for each ring slot and
1064 * assign them to the network adapter.
1067 static int velocity_init_rd_ring(struct velocity_info
*vptr
)
1070 unsigned int rsize
= sizeof(struct velocity_rd_info
) *
1071 vptr
->options
.numrx
;
1073 vptr
->rd_info
= kmalloc(rsize
, GFP_KERNEL
);
1074 if(vptr
->rd_info
== NULL
)
1076 memset(vptr
->rd_info
, 0, rsize
);
1078 vptr
->rd_filled
= vptr
->rd_dirty
= vptr
->rd_curr
= 0;
1080 ret
= velocity_rx_refill(vptr
);
1082 VELOCITY_PRT(MSG_LEVEL_ERR
, KERN_ERR
1083 "%s: failed to allocate RX buffer.\n", vptr
->dev
->name
);
1084 velocity_free_rd_ring(vptr
);
1091 * velocity_free_rd_ring - free receive ring
1092 * @vptr: velocity to clean up
1094 * Free the receive buffers for each ring slot and any
1095 * attached socket buffers that need to go away.
1098 static void velocity_free_rd_ring(struct velocity_info
*vptr
)
1102 if (vptr
->rd_info
== NULL
)
1105 for (i
= 0; i
< vptr
->options
.numrx
; i
++) {
1106 struct velocity_rd_info
*rd_info
= &(vptr
->rd_info
[i
]);
1107 struct rx_desc
*rd
= vptr
->rd_ring
+ i
;
1109 memset(rd
, 0, sizeof(*rd
));
1113 pci_unmap_single(vptr
->pdev
, rd_info
->skb_dma
, vptr
->rx_buf_sz
,
1114 PCI_DMA_FROMDEVICE
);
1115 rd_info
->skb_dma
= (dma_addr_t
) NULL
;
1117 dev_kfree_skb(rd_info
->skb
);
1118 rd_info
->skb
= NULL
;
1121 kfree(vptr
->rd_info
);
1122 vptr
->rd_info
= NULL
;
1126 * velocity_init_td_ring - set up transmit ring
1129 * Set up the transmit ring and chain the ring pointers together.
1130 * Returns zero on success or a negative posix errno code for
1134 static int velocity_init_td_ring(struct velocity_info
*vptr
)
1139 struct velocity_td_info
*td_info
;
1140 unsigned int tsize
= sizeof(struct velocity_td_info
) *
1141 vptr
->options
.numtx
;
1143 /* Init the TD ring entries */
1144 for (j
= 0; j
< vptr
->num_txq
; j
++) {
1145 curr
= vptr
->td_pool_dma
[j
];
1147 vptr
->td_infos
[j
] = kmalloc(tsize
, GFP_KERNEL
);
1148 if(vptr
->td_infos
[j
] == NULL
)
1151 kfree(vptr
->td_infos
[j
]);
1154 memset(vptr
->td_infos
[j
], 0, tsize
);
1156 for (i
= 0; i
< vptr
->options
.numtx
; i
++, curr
+= sizeof(struct tx_desc
)) {
1157 td
= &(vptr
->td_rings
[j
][i
]);
1158 td_info
= &(vptr
->td_infos
[j
][i
]);
1159 td_info
->buf
= vptr
->tx_bufs
+
1160 (j
* vptr
->options
.numtx
+ i
) * PKT_BUF_SZ
;
1161 td_info
->buf_dma
= vptr
->tx_bufs_dma
+
1162 (j
* vptr
->options
.numtx
+ i
) * PKT_BUF_SZ
;
1164 vptr
->td_tail
[j
] = vptr
->td_curr
[j
] = vptr
->td_used
[j
] = 0;
1170 * FIXME: could we merge this with velocity_free_tx_buf ?
1173 static void velocity_free_td_ring_entry(struct velocity_info
*vptr
,
1176 struct velocity_td_info
* td_info
= &(vptr
->td_infos
[q
][n
]);
1179 if (td_info
== NULL
)
1183 for (i
= 0; i
< td_info
->nskb_dma
; i
++)
1185 if (td_info
->skb_dma
[i
]) {
1186 pci_unmap_single(vptr
->pdev
, td_info
->skb_dma
[i
],
1187 td_info
->skb
->len
, PCI_DMA_TODEVICE
);
1188 td_info
->skb_dma
[i
] = (dma_addr_t
) NULL
;
1191 dev_kfree_skb(td_info
->skb
);
1192 td_info
->skb
= NULL
;
1197 * velocity_free_td_ring - free td ring
1200 * Free up the transmit ring for this particular velocity adapter.
1201 * We free the ring contents but not the ring itself.
1204 static void velocity_free_td_ring(struct velocity_info
*vptr
)
1208 for (j
= 0; j
< vptr
->num_txq
; j
++) {
1209 if (vptr
->td_infos
[j
] == NULL
)
1211 for (i
= 0; i
< vptr
->options
.numtx
; i
++) {
1212 velocity_free_td_ring_entry(vptr
, j
, i
);
1215 kfree(vptr
->td_infos
[j
]);
1216 vptr
->td_infos
[j
] = NULL
;
1221 * velocity_rx_srv - service RX interrupt
1223 * @status: adapter status (unused)
1225 * Walk the receive ring of the velocity adapter and remove
1226 * any received packets from the receive queue. Hand the ring
1227 * slots back to the adapter for reuse.
1230 static int velocity_rx_srv(struct velocity_info
*vptr
, int status
)
1232 struct net_device_stats
*stats
= &vptr
->stats
;
1233 int rd_curr
= vptr
->rd_curr
;
1237 struct rx_desc
*rd
= vptr
->rd_ring
+ rd_curr
;
1239 if (!vptr
->rd_info
[rd_curr
].skb
)
1242 if (rd
->rdesc0
.owner
== OWNED_BY_NIC
)
1248 * Don't drop CE or RL error frame although RXOK is off
1250 if ((rd
->rdesc0
.RSR
& RSR_RXOK
) || (!(rd
->rdesc0
.RSR
& RSR_RXOK
) && (rd
->rdesc0
.RSR
& (RSR_CE
| RSR_RL
)))) {
1251 if (velocity_receive_frame(vptr
, rd_curr
) < 0)
1252 stats
->rx_dropped
++;
1254 if (rd
->rdesc0
.RSR
& RSR_CRC
)
1255 stats
->rx_crc_errors
++;
1256 if (rd
->rdesc0
.RSR
& RSR_FAE
)
1257 stats
->rx_frame_errors
++;
1259 stats
->rx_dropped
++;
1264 vptr
->dev
->last_rx
= jiffies
;
1267 if (rd_curr
>= vptr
->options
.numrx
)
1269 } while (++works
<= 15);
1271 vptr
->rd_curr
= rd_curr
;
1273 if (works
> 0 && velocity_rx_refill(vptr
) < 0) {
1274 VELOCITY_PRT(MSG_LEVEL_ERR
, KERN_ERR
1275 "%s: rx buf allocation failure\n", vptr
->dev
->name
);
1283 * velocity_rx_csum - checksum process
1284 * @rd: receive packet descriptor
1285 * @skb: network layer packet buffer
1287 * Process the status bits for the received packet and determine
1288 * if the checksum was computed and verified by the hardware
1291 static inline void velocity_rx_csum(struct rx_desc
*rd
, struct sk_buff
*skb
)
1293 skb
->ip_summed
= CHECKSUM_NONE
;
1295 if (rd
->rdesc1
.CSM
& CSM_IPKT
) {
1296 if (rd
->rdesc1
.CSM
& CSM_IPOK
) {
1297 if ((rd
->rdesc1
.CSM
& CSM_TCPKT
) ||
1298 (rd
->rdesc1
.CSM
& CSM_UDPKT
)) {
1299 if (!(rd
->rdesc1
.CSM
& CSM_TUPOK
)) {
1303 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1309 * velocity_rx_copy - in place Rx copy for small packets
1310 * @rx_skb: network layer packet buffer candidate
1311 * @pkt_size: received data size
1312 * @rd: receive packet descriptor
1313 * @dev: network device
1315 * Replace the current skb that is scheduled for Rx processing by a
1316 * shorter, immediatly allocated skb, if the received packet is small
1317 * enough. This function returns a negative value if the received
1318 * packet is too big or if memory is exhausted.
1320 static inline int velocity_rx_copy(struct sk_buff
**rx_skb
, int pkt_size
,
1321 struct velocity_info
*vptr
)
1325 if (pkt_size
< rx_copybreak
) {
1326 struct sk_buff
*new_skb
;
1328 new_skb
= dev_alloc_skb(pkt_size
+ 2);
1330 new_skb
->dev
= vptr
->dev
;
1331 new_skb
->ip_summed
= rx_skb
[0]->ip_summed
;
1333 if (vptr
->flags
& VELOCITY_FLAGS_IP_ALIGN
)
1334 skb_reserve(new_skb
, 2);
1336 memcpy(new_skb
->data
, rx_skb
[0]->data
, pkt_size
);
1346 * velocity_iph_realign - IP header alignment
1347 * @vptr: velocity we are handling
1348 * @skb: network layer packet buffer
1349 * @pkt_size: received data size
1351 * Align IP header on a 2 bytes boundary. This behavior can be
1352 * configured by the user.
1354 static inline void velocity_iph_realign(struct velocity_info
*vptr
,
1355 struct sk_buff
*skb
, int pkt_size
)
1357 /* FIXME - memmove ? */
1358 if (vptr
->flags
& VELOCITY_FLAGS_IP_ALIGN
) {
1361 for (i
= pkt_size
; i
>= 0; i
--)
1362 *(skb
->data
+ i
+ 2) = *(skb
->data
+ i
);
1363 skb_reserve(skb
, 2);
1368 * velocity_receive_frame - received packet processor
1369 * @vptr: velocity we are handling
1372 * A packet has arrived. We process the packet and if appropriate
1373 * pass the frame up the network stack
1376 static int velocity_receive_frame(struct velocity_info
*vptr
, int idx
)
1378 void (*pci_action
)(struct pci_dev
*, dma_addr_t
, size_t, int);
1379 struct net_device_stats
*stats
= &vptr
->stats
;
1380 struct velocity_rd_info
*rd_info
= &(vptr
->rd_info
[idx
]);
1381 struct rx_desc
*rd
= &(vptr
->rd_ring
[idx
]);
1382 int pkt_len
= rd
->rdesc0
.len
;
1383 struct sk_buff
*skb
;
1385 if (rd
->rdesc0
.RSR
& (RSR_STP
| RSR_EDP
)) {
1386 VELOCITY_PRT(MSG_LEVEL_VERBOSE
, KERN_ERR
" %s : the received frame span multple RDs.\n", vptr
->dev
->name
);
1387 stats
->rx_length_errors
++;
1391 if (rd
->rdesc0
.RSR
& RSR_MAR
)
1392 vptr
->stats
.multicast
++;
1395 skb
->dev
= vptr
->dev
;
1397 pci_dma_sync_single_for_cpu(vptr
->pdev
, rd_info
->skb_dma
,
1398 vptr
->rx_buf_sz
, PCI_DMA_FROMDEVICE
);
1401 * Drop frame not meeting IEEE 802.3
1404 if (vptr
->flags
& VELOCITY_FLAGS_VAL_PKT_LEN
) {
1405 if (rd
->rdesc0
.RSR
& RSR_RL
) {
1406 stats
->rx_length_errors
++;
1411 pci_action
= pci_dma_sync_single_for_device
;
1413 velocity_rx_csum(rd
, skb
);
1415 if (velocity_rx_copy(&skb
, pkt_len
, vptr
) < 0) {
1416 velocity_iph_realign(vptr
, skb
, pkt_len
);
1417 pci_action
= pci_unmap_single
;
1418 rd_info
->skb
= NULL
;
1421 pci_action(vptr
->pdev
, rd_info
->skb_dma
, vptr
->rx_buf_sz
,
1422 PCI_DMA_FROMDEVICE
);
1424 skb_put(skb
, pkt_len
- 4);
1425 skb
->protocol
= eth_type_trans(skb
, skb
->dev
);
1427 stats
->rx_bytes
+= pkt_len
;
1434 * velocity_alloc_rx_buf - allocate aligned receive buffer
1438 * Allocate a new full sized buffer for the reception of a frame and
1439 * map it into PCI space for the hardware to use. The hardware
1440 * requires *64* byte alignment of the buffer which makes life
1441 * less fun than would be ideal.
1444 static int velocity_alloc_rx_buf(struct velocity_info
*vptr
, int idx
)
1446 struct rx_desc
*rd
= &(vptr
->rd_ring
[idx
]);
1447 struct velocity_rd_info
*rd_info
= &(vptr
->rd_info
[idx
]);
1449 rd_info
->skb
= dev_alloc_skb(vptr
->rx_buf_sz
+ 64);
1450 if (rd_info
->skb
== NULL
)
1454 * Do the gymnastics to get the buffer head for data at
1457 skb_reserve(rd_info
->skb
, (unsigned long) rd_info
->skb
->data
& 63);
1458 rd_info
->skb
->dev
= vptr
->dev
;
1459 rd_info
->skb_dma
= pci_map_single(vptr
->pdev
, rd_info
->skb
->data
, vptr
->rx_buf_sz
, PCI_DMA_FROMDEVICE
);
1462 * Fill in the descriptor to match
1465 *((u32
*) & (rd
->rdesc0
)) = 0;
1466 rd
->len
= cpu_to_le32(vptr
->rx_buf_sz
);
1468 rd
->pa_low
= cpu_to_le32(rd_info
->skb_dma
);
1474 * tx_srv - transmit interrupt service
1478 * Scan the queues looking for transmitted packets that
1479 * we can complete and clean up. Update any statistics as
1483 static int velocity_tx_srv(struct velocity_info
*vptr
, u32 status
)
1490 struct velocity_td_info
*tdinfo
;
1491 struct net_device_stats
*stats
= &vptr
->stats
;
1493 for (qnum
= 0; qnum
< vptr
->num_txq
; qnum
++) {
1494 for (idx
= vptr
->td_tail
[qnum
]; vptr
->td_used
[qnum
] > 0;
1495 idx
= (idx
+ 1) % vptr
->options
.numtx
) {
1500 td
= &(vptr
->td_rings
[qnum
][idx
]);
1501 tdinfo
= &(vptr
->td_infos
[qnum
][idx
]);
1503 if (td
->tdesc0
.owner
== OWNED_BY_NIC
)
1509 if (td
->tdesc0
.TSR
& TSR0_TERR
) {
1511 stats
->tx_dropped
++;
1512 if (td
->tdesc0
.TSR
& TSR0_CDH
)
1513 stats
->tx_heartbeat_errors
++;
1514 if (td
->tdesc0
.TSR
& TSR0_CRS
)
1515 stats
->tx_carrier_errors
++;
1516 if (td
->tdesc0
.TSR
& TSR0_ABT
)
1517 stats
->tx_aborted_errors
++;
1518 if (td
->tdesc0
.TSR
& TSR0_OWC
)
1519 stats
->tx_window_errors
++;
1521 stats
->tx_packets
++;
1522 stats
->tx_bytes
+= tdinfo
->skb
->len
;
1524 velocity_free_tx_buf(vptr
, tdinfo
);
1525 vptr
->td_used
[qnum
]--;
1527 vptr
->td_tail
[qnum
] = idx
;
1529 if (AVAIL_TD(vptr
, qnum
) < 1) {
1534 * Look to see if we should kick the transmit network
1535 * layer for more work.
1537 if (netif_queue_stopped(vptr
->dev
) && (full
== 0)
1538 && (!(vptr
->mii_status
& VELOCITY_LINK_FAIL
))) {
1539 netif_wake_queue(vptr
->dev
);
1545 * velocity_print_link_status - link status reporting
1546 * @vptr: velocity to report on
1548 * Turn the link status of the velocity card into a kernel log
1549 * description of the new link state, detailing speed and duplex
1553 static void velocity_print_link_status(struct velocity_info
*vptr
)
1556 if (vptr
->mii_status
& VELOCITY_LINK_FAIL
) {
1557 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_NOTICE
"%s: failed to detect cable link\n", vptr
->dev
->name
);
1558 } else if (vptr
->options
.spd_dpx
== SPD_DPX_AUTO
) {
1559 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_NOTICE
"%s: Link autonegation", vptr
->dev
->name
);
1561 if (vptr
->mii_status
& VELOCITY_SPEED_1000
)
1562 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 1000M bps");
1563 else if (vptr
->mii_status
& VELOCITY_SPEED_100
)
1564 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 100M bps");
1566 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 10M bps");
1568 if (vptr
->mii_status
& VELOCITY_DUPLEX_FULL
)
1569 VELOCITY_PRT(MSG_LEVEL_INFO
, " full duplex\n");
1571 VELOCITY_PRT(MSG_LEVEL_INFO
, " half duplex\n");
1573 VELOCITY_PRT(MSG_LEVEL_INFO
, KERN_NOTICE
"%s: Link forced", vptr
->dev
->name
);
1574 switch (vptr
->options
.spd_dpx
) {
1575 case SPD_DPX_100_HALF
:
1576 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 100M bps half duplex\n");
1578 case SPD_DPX_100_FULL
:
1579 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 100M bps full duplex\n");
1581 case SPD_DPX_10_HALF
:
1582 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 10M bps half duplex\n");
1584 case SPD_DPX_10_FULL
:
1585 VELOCITY_PRT(MSG_LEVEL_INFO
, " speed 10M bps full duplex\n");
1594 * velocity_error - handle error from controller
1596 * @status: card status
1598 * Process an error report from the hardware and attempt to recover
1599 * the card itself. At the moment we cannot recover from some
1600 * theoretically impossible errors but this could be fixed using
1601 * the pci_device_failed logic to bounce the hardware
1605 static void velocity_error(struct velocity_info
*vptr
, int status
)
1608 if (status
& ISR_TXSTLI
) {
1609 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
1611 printk(KERN_ERR
"TD structure errror TDindex=%hx\n", readw(®s
->TDIdx
[0]));
1612 BYTE_REG_BITS_ON(TXESR_TDSTR
, ®s
->TXESR
);
1613 writew(TRDCSR_RUN
, ®s
->TDCSRClr
);
1614 netif_stop_queue(vptr
->dev
);
1616 /* FIXME: port over the pci_device_failed code and use it
1620 if (status
& ISR_SRCI
) {
1621 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
1624 if (vptr
->options
.spd_dpx
== SPD_DPX_AUTO
) {
1625 vptr
->mii_status
= check_connection_type(regs
);
1628 * If it is a 3119, disable frame bursting in
1629 * halfduplex mode and enable it in fullduplex
1632 if (vptr
->rev_id
< REV_ID_VT3216_A0
) {
1633 if (vptr
->mii_status
| VELOCITY_DUPLEX_FULL
)
1634 BYTE_REG_BITS_ON(TCR_TB2BDIS
, ®s
->TCR
);
1636 BYTE_REG_BITS_OFF(TCR_TB2BDIS
, ®s
->TCR
);
1639 * Only enable CD heart beat counter in 10HD mode
1641 if (!(vptr
->mii_status
& VELOCITY_DUPLEX_FULL
) && (vptr
->mii_status
& VELOCITY_SPEED_10
)) {
1642 BYTE_REG_BITS_OFF(TESTCFG_HBDIS
, ®s
->TESTCFG
);
1644 BYTE_REG_BITS_ON(TESTCFG_HBDIS
, ®s
->TESTCFG
);
1648 * Get link status from PHYSR0
1650 linked
= readb(®s
->PHYSR0
) & PHYSR0_LINKGD
;
1653 vptr
->mii_status
&= ~VELOCITY_LINK_FAIL
;
1654 netif_carrier_on(vptr
->dev
);
1656 vptr
->mii_status
|= VELOCITY_LINK_FAIL
;
1657 netif_carrier_off(vptr
->dev
);
1660 velocity_print_link_status(vptr
);
1661 enable_flow_control_ability(vptr
);
1664 * Re-enable auto-polling because SRCI will disable
1668 enable_mii_autopoll(regs
);
1670 if (vptr
->mii_status
& VELOCITY_LINK_FAIL
)
1671 netif_stop_queue(vptr
->dev
);
1673 netif_wake_queue(vptr
->dev
);
1676 if (status
& ISR_MIBFI
)
1677 velocity_update_hw_mibs(vptr
);
1678 if (status
& ISR_LSTEI
)
1679 mac_rx_queue_wake(vptr
->mac_regs
);
1683 * velocity_free_tx_buf - free transmit buffer
1687 * Release an transmit buffer. If the buffer was preallocated then
1688 * recycle it, if not then unmap the buffer.
1691 static void velocity_free_tx_buf(struct velocity_info
*vptr
, struct velocity_td_info
*tdinfo
)
1693 struct sk_buff
*skb
= tdinfo
->skb
;
1697 * Don't unmap the pre-allocated tx_bufs
1699 if (tdinfo
->skb_dma
&& (tdinfo
->skb_dma
[0] != tdinfo
->buf_dma
)) {
1701 for (i
= 0; i
< tdinfo
->nskb_dma
; i
++) {
1702 #ifdef VELOCITY_ZERO_COPY_SUPPORT
1703 pci_unmap_single(vptr
->pdev
, tdinfo
->skb_dma
[i
], td
->tdesc1
.len
, PCI_DMA_TODEVICE
);
1705 pci_unmap_single(vptr
->pdev
, tdinfo
->skb_dma
[i
], skb
->len
, PCI_DMA_TODEVICE
);
1707 tdinfo
->skb_dma
[i
] = 0;
1710 dev_kfree_skb_irq(skb
);
1715 * velocity_open - interface activation callback
1716 * @dev: network layer device to open
1718 * Called when the network layer brings the interface up. Returns
1719 * a negative posix error code on failure, or zero on success.
1721 * All the ring allocation and set up is done on open for this
1722 * adapter to minimise memory usage when inactive
1725 static int velocity_open(struct net_device
*dev
)
1727 struct velocity_info
*vptr
= netdev_priv(dev
);
1730 vptr
->rx_buf_sz
= (dev
->mtu
<= 1504 ? PKT_BUF_SZ
: dev
->mtu
+ 32);
1732 ret
= velocity_init_rings(vptr
);
1736 ret
= velocity_init_rd_ring(vptr
);
1738 goto err_free_desc_rings
;
1740 ret
= velocity_init_td_ring(vptr
);
1742 goto err_free_rd_ring
;
1744 /* Ensure chip is running */
1745 pci_set_power_state(vptr
->pdev
, PCI_D0
);
1747 velocity_init_registers(vptr
, VELOCITY_INIT_COLD
);
1749 ret
= request_irq(vptr
->pdev
->irq
, &velocity_intr
, IRQF_SHARED
,
1752 /* Power down the chip */
1753 pci_set_power_state(vptr
->pdev
, PCI_D3hot
);
1754 goto err_free_td_ring
;
1757 mac_enable_int(vptr
->mac_regs
);
1758 netif_start_queue(dev
);
1759 vptr
->flags
|= VELOCITY_FLAGS_OPENED
;
1764 velocity_free_td_ring(vptr
);
1766 velocity_free_rd_ring(vptr
);
1767 err_free_desc_rings
:
1768 velocity_free_rings(vptr
);
1773 * velocity_change_mtu - MTU change callback
1774 * @dev: network device
1775 * @new_mtu: desired MTU
1777 * Handle requests from the networking layer for MTU change on
1778 * this interface. It gets called on a change by the network layer.
1779 * Return zero for success or negative posix error code.
1782 static int velocity_change_mtu(struct net_device
*dev
, int new_mtu
)
1784 struct velocity_info
*vptr
= netdev_priv(dev
);
1785 unsigned long flags
;
1786 int oldmtu
= dev
->mtu
;
1789 if ((new_mtu
< VELOCITY_MIN_MTU
) || new_mtu
> (VELOCITY_MAX_MTU
)) {
1790 VELOCITY_PRT(MSG_LEVEL_ERR
, KERN_NOTICE
"%s: Invalid MTU.\n",
1795 if (new_mtu
!= oldmtu
) {
1796 spin_lock_irqsave(&vptr
->lock
, flags
);
1798 netif_stop_queue(dev
);
1799 velocity_shutdown(vptr
);
1801 velocity_free_td_ring(vptr
);
1802 velocity_free_rd_ring(vptr
);
1806 vptr
->rx_buf_sz
= 9 * 1024;
1807 else if (new_mtu
> 4096)
1808 vptr
->rx_buf_sz
= 8192;
1810 vptr
->rx_buf_sz
= 4 * 1024;
1812 ret
= velocity_init_rd_ring(vptr
);
1816 ret
= velocity_init_td_ring(vptr
);
1820 velocity_init_registers(vptr
, VELOCITY_INIT_COLD
);
1822 mac_enable_int(vptr
->mac_regs
);
1823 netif_start_queue(dev
);
1825 spin_unlock_irqrestore(&vptr
->lock
, flags
);
1832 * velocity_shutdown - shut down the chip
1833 * @vptr: velocity to deactivate
1835 * Shuts down the internal operations of the velocity and
1836 * disables interrupts, autopolling, transmit and receive
1839 static void velocity_shutdown(struct velocity_info
*vptr
)
1841 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
1842 mac_disable_int(regs
);
1843 writel(CR0_STOP
, ®s
->CR0Set
);
1844 writew(0xFFFF, ®s
->TDCSRClr
);
1845 writeb(0xFF, ®s
->RDCSRClr
);
1846 safe_disable_mii_autopoll(regs
);
1847 mac_clear_isr(regs
);
1851 * velocity_close - close adapter callback
1852 * @dev: network device
1854 * Callback from the network layer when the velocity is being
1855 * deactivated by the network layer
1858 static int velocity_close(struct net_device
*dev
)
1860 struct velocity_info
*vptr
= netdev_priv(dev
);
1862 netif_stop_queue(dev
);
1863 velocity_shutdown(vptr
);
1865 if (vptr
->flags
& VELOCITY_FLAGS_WOL_ENABLED
)
1866 velocity_get_ip(vptr
);
1868 free_irq(dev
->irq
, dev
);
1870 /* Power down the chip */
1871 pci_set_power_state(vptr
->pdev
, PCI_D3hot
);
1873 /* Free the resources */
1874 velocity_free_td_ring(vptr
);
1875 velocity_free_rd_ring(vptr
);
1876 velocity_free_rings(vptr
);
1878 vptr
->flags
&= (~VELOCITY_FLAGS_OPENED
);
1883 * velocity_xmit - transmit packet callback
1884 * @skb: buffer to transmit
1885 * @dev: network device
1887 * Called by the networ layer to request a packet is queued to
1888 * the velocity. Returns zero on success.
1891 static int velocity_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
1893 struct velocity_info
*vptr
= netdev_priv(dev
);
1895 struct tx_desc
*td_ptr
;
1896 struct velocity_td_info
*tdinfo
;
1897 unsigned long flags
;
1900 int pktlen
= skb
->len
;
1902 #ifdef VELOCITY_ZERO_COPY_SUPPORT
1903 if (skb_shinfo(skb
)->nr_frags
> 6 && __skb_linearize(skb
)) {
1909 spin_lock_irqsave(&vptr
->lock
, flags
);
1911 index
= vptr
->td_curr
[qnum
];
1912 td_ptr
= &(vptr
->td_rings
[qnum
][index
]);
1913 tdinfo
= &(vptr
->td_infos
[qnum
][index
]);
1915 td_ptr
->tdesc1
.TCPLS
= TCPLS_NORMAL
;
1916 td_ptr
->tdesc1
.TCR
= TCR0_TIC
;
1917 td_ptr
->td_buf
[0].queue
= 0;
1922 if (pktlen
< ETH_ZLEN
) {
1923 /* Cannot occur until ZC support */
1925 memcpy(tdinfo
->buf
, skb
->data
, skb
->len
);
1926 memset(tdinfo
->buf
+ skb
->len
, 0, ETH_ZLEN
- skb
->len
);
1928 tdinfo
->skb_dma
[0] = tdinfo
->buf_dma
;
1929 td_ptr
->tdesc0
.pktsize
= pktlen
;
1930 td_ptr
->td_buf
[0].pa_low
= cpu_to_le32(tdinfo
->skb_dma
[0]);
1931 td_ptr
->td_buf
[0].pa_high
= 0;
1932 td_ptr
->td_buf
[0].bufsize
= td_ptr
->tdesc0
.pktsize
;
1933 tdinfo
->nskb_dma
= 1;
1934 td_ptr
->tdesc1
.CMDZ
= 2;
1936 #ifdef VELOCITY_ZERO_COPY_SUPPORT
1937 if (skb_shinfo(skb
)->nr_frags
> 0) {
1938 int nfrags
= skb_shinfo(skb
)->nr_frags
;
1941 memcpy(tdinfo
->buf
, skb
->data
, skb
->len
);
1942 tdinfo
->skb_dma
[0] = tdinfo
->buf_dma
;
1943 td_ptr
->tdesc0
.pktsize
=
1944 td_ptr
->td_buf
[0].pa_low
= cpu_to_le32(tdinfo
->skb_dma
[0]);
1945 td_ptr
->td_buf
[0].pa_high
= 0;
1946 td_ptr
->td_buf
[0].bufsize
= td_ptr
->tdesc0
.pktsize
;
1947 tdinfo
->nskb_dma
= 1;
1948 td_ptr
->tdesc1
.CMDZ
= 2;
1951 tdinfo
->nskb_dma
= 0;
1952 tdinfo
->skb_dma
[i
] = pci_map_single(vptr
->pdev
, skb
->data
, skb
->len
- skb
->data_len
, PCI_DMA_TODEVICE
);
1954 td_ptr
->tdesc0
.pktsize
= pktlen
;
1956 /* FIXME: support 48bit DMA later */
1957 td_ptr
->td_buf
[i
].pa_low
= cpu_to_le32(tdinfo
->skb_dma
);
1958 td_ptr
->td_buf
[i
].pa_high
= 0;
1959 td_ptr
->td_buf
[i
].bufsize
= skb
->len
->skb
->data_len
;
1961 for (i
= 0; i
< nfrags
; i
++) {
1962 skb_frag_t
*frag
= &skb_shinfo(skb
)->frags
[i
];
1963 void *addr
= ((void *) page_address(frag
->page
+ frag
->page_offset
));
1965 tdinfo
->skb_dma
[i
+ 1] = pci_map_single(vptr
->pdev
, addr
, frag
->size
, PCI_DMA_TODEVICE
);
1967 td_ptr
->td_buf
[i
+ 1].pa_low
= cpu_to_le32(tdinfo
->skb_dma
[i
+ 1]);
1968 td_ptr
->td_buf
[i
+ 1].pa_high
= 0;
1969 td_ptr
->td_buf
[i
+ 1].bufsize
= frag
->size
;
1971 tdinfo
->nskb_dma
= i
- 1;
1972 td_ptr
->tdesc1
.CMDZ
= i
;
1979 * Map the linear network buffer into PCI space and
1980 * add it to the transmit ring.
1983 tdinfo
->skb_dma
[0] = pci_map_single(vptr
->pdev
, skb
->data
, pktlen
, PCI_DMA_TODEVICE
);
1984 td_ptr
->tdesc0
.pktsize
= pktlen
;
1985 td_ptr
->td_buf
[0].pa_low
= cpu_to_le32(tdinfo
->skb_dma
[0]);
1986 td_ptr
->td_buf
[0].pa_high
= 0;
1987 td_ptr
->td_buf
[0].bufsize
= td_ptr
->tdesc0
.pktsize
;
1988 tdinfo
->nskb_dma
= 1;
1989 td_ptr
->tdesc1
.CMDZ
= 2;
1992 if (vptr
->flags
& VELOCITY_FLAGS_TAGGING
) {
1993 td_ptr
->tdesc1
.pqinf
.VID
= (vptr
->options
.vid
& 0xfff);
1994 td_ptr
->tdesc1
.pqinf
.priority
= 0;
1995 td_ptr
->tdesc1
.pqinf
.CFI
= 0;
1996 td_ptr
->tdesc1
.TCR
|= TCR0_VETAG
;
2000 * Handle hardware checksum
2002 if ((vptr
->flags
& VELOCITY_FLAGS_TX_CSUM
)
2003 && (skb
->ip_summed
== CHECKSUM_HW
)) {
2004 struct iphdr
*ip
= skb
->nh
.iph
;
2005 if (ip
->protocol
== IPPROTO_TCP
)
2006 td_ptr
->tdesc1
.TCR
|= TCR0_TCPCK
;
2007 else if (ip
->protocol
== IPPROTO_UDP
)
2008 td_ptr
->tdesc1
.TCR
|= (TCR0_UDPCK
);
2009 td_ptr
->tdesc1
.TCR
|= TCR0_IPCK
;
2013 int prev
= index
- 1;
2016 prev
= vptr
->options
.numtx
- 1;
2017 td_ptr
->tdesc0
.owner
= OWNED_BY_NIC
;
2018 vptr
->td_used
[qnum
]++;
2019 vptr
->td_curr
[qnum
] = (index
+ 1) % vptr
->options
.numtx
;
2021 if (AVAIL_TD(vptr
, qnum
) < 1)
2022 netif_stop_queue(dev
);
2024 td_ptr
= &(vptr
->td_rings
[qnum
][prev
]);
2025 td_ptr
->td_buf
[0].queue
= 1;
2026 mac_tx_queue_wake(vptr
->mac_regs
, qnum
);
2028 dev
->trans_start
= jiffies
;
2029 spin_unlock_irqrestore(&vptr
->lock
, flags
);
2034 * velocity_intr - interrupt callback
2035 * @irq: interrupt number
2036 * @dev_instance: interrupting device
2037 * @pt_regs: CPU register state at interrupt
2039 * Called whenever an interrupt is generated by the velocity
2040 * adapter IRQ line. We may not be the source of the interrupt
2041 * and need to identify initially if we are, and if not exit as
2042 * efficiently as possible.
2045 static int velocity_intr(int irq
, void *dev_instance
, struct pt_regs
*regs
)
2047 struct net_device
*dev
= dev_instance
;
2048 struct velocity_info
*vptr
= netdev_priv(dev
);
2053 spin_lock(&vptr
->lock
);
2054 isr_status
= mac_read_isr(vptr
->mac_regs
);
2057 if (isr_status
== 0) {
2058 spin_unlock(&vptr
->lock
);
2062 mac_disable_int(vptr
->mac_regs
);
2065 * Keep processing the ISR until we have completed
2066 * processing and the isr_status becomes zero
2069 while (isr_status
!= 0) {
2070 mac_write_isr(vptr
->mac_regs
, isr_status
);
2071 if (isr_status
& (~(ISR_PRXI
| ISR_PPRXI
| ISR_PTXI
| ISR_PPTXI
)))
2072 velocity_error(vptr
, isr_status
);
2073 if (isr_status
& (ISR_PRXI
| ISR_PPRXI
))
2074 max_count
+= velocity_rx_srv(vptr
, isr_status
);
2075 if (isr_status
& (ISR_PTXI
| ISR_PPTXI
))
2076 max_count
+= velocity_tx_srv(vptr
, isr_status
);
2077 isr_status
= mac_read_isr(vptr
->mac_regs
);
2078 if (max_count
> vptr
->options
.int_works
)
2080 printk(KERN_WARNING
"%s: excessive work at interrupt.\n",
2085 spin_unlock(&vptr
->lock
);
2086 mac_enable_int(vptr
->mac_regs
);
2093 * velocity_set_multi - filter list change callback
2094 * @dev: network device
2096 * Called by the network layer when the filter lists need to change
2097 * for a velocity adapter. Reload the CAMs with the new address
2101 static void velocity_set_multi(struct net_device
*dev
)
2103 struct velocity_info
*vptr
= netdev_priv(dev
);
2104 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2107 struct dev_mc_list
*mclist
;
2109 if (dev
->flags
& IFF_PROMISC
) { /* Set promiscuous. */
2110 /* Unconditionally log net taps. */
2111 printk(KERN_NOTICE
"%s: Promiscuous mode enabled.\n", dev
->name
);
2112 writel(0xffffffff, ®s
->MARCAM
[0]);
2113 writel(0xffffffff, ®s
->MARCAM
[4]);
2114 rx_mode
= (RCR_AM
| RCR_AB
| RCR_PROM
);
2115 } else if ((dev
->mc_count
> vptr
->multicast_limit
)
2116 || (dev
->flags
& IFF_ALLMULTI
)) {
2117 writel(0xffffffff, ®s
->MARCAM
[0]);
2118 writel(0xffffffff, ®s
->MARCAM
[4]);
2119 rx_mode
= (RCR_AM
| RCR_AB
);
2121 int offset
= MCAM_SIZE
- vptr
->multicast_limit
;
2122 mac_get_cam_mask(regs
, vptr
->mCAMmask
, VELOCITY_MULTICAST_CAM
);
2124 for (i
= 0, mclist
= dev
->mc_list
; mclist
&& i
< dev
->mc_count
; i
++, mclist
= mclist
->next
) {
2125 mac_set_cam(regs
, i
+ offset
, mclist
->dmi_addr
, VELOCITY_MULTICAST_CAM
);
2126 vptr
->mCAMmask
[(offset
+ i
) / 8] |= 1 << ((offset
+ i
) & 7);
2129 mac_set_cam_mask(regs
, vptr
->mCAMmask
, VELOCITY_MULTICAST_CAM
);
2130 rx_mode
= (RCR_AM
| RCR_AB
);
2132 if (dev
->mtu
> 1500)
2135 BYTE_REG_BITS_ON(rx_mode
, ®s
->RCR
);
2140 * velocity_get_status - statistics callback
2141 * @dev: network device
2143 * Callback from the network layer to allow driver statistics
2144 * to be resynchronized with hardware collected state. In the
2145 * case of the velocity we need to pull the MIB counters from
2146 * the hardware into the counters before letting the network
2147 * layer display them.
2150 static struct net_device_stats
*velocity_get_stats(struct net_device
*dev
)
2152 struct velocity_info
*vptr
= netdev_priv(dev
);
2154 /* If the hardware is down, don't touch MII */
2155 if(!netif_running(dev
))
2156 return &vptr
->stats
;
2158 spin_lock_irq(&vptr
->lock
);
2159 velocity_update_hw_mibs(vptr
);
2160 spin_unlock_irq(&vptr
->lock
);
2162 vptr
->stats
.rx_packets
= vptr
->mib_counter
[HW_MIB_ifRxAllPkts
];
2163 vptr
->stats
.rx_errors
= vptr
->mib_counter
[HW_MIB_ifRxErrorPkts
];
2164 vptr
->stats
.rx_length_errors
= vptr
->mib_counter
[HW_MIB_ifInRangeLengthErrors
];
2166 // unsigned long rx_dropped; /* no space in linux buffers */
2167 vptr
->stats
.collisions
= vptr
->mib_counter
[HW_MIB_ifTxEtherCollisions
];
2168 /* detailed rx_errors: */
2169 // unsigned long rx_length_errors;
2170 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2171 vptr
->stats
.rx_crc_errors
= vptr
->mib_counter
[HW_MIB_ifRxPktCRCE
];
2172 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2173 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2174 // unsigned long rx_missed_errors; /* receiver missed packet */
2176 /* detailed tx_errors */
2177 // unsigned long tx_fifo_errors;
2179 return &vptr
->stats
;
2184 * velocity_ioctl - ioctl entry point
2185 * @dev: network device
2186 * @rq: interface request ioctl
2187 * @cmd: command code
2189 * Called when the user issues an ioctl request to the network
2190 * device in question. The velocity interface supports MII.
2193 static int velocity_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
2195 struct velocity_info
*vptr
= netdev_priv(dev
);
2198 /* If we are asked for information and the device is power
2199 saving then we need to bring the device back up to talk to it */
2201 if (!netif_running(dev
))
2202 pci_set_power_state(vptr
->pdev
, PCI_D0
);
2205 case SIOCGMIIPHY
: /* Get address of MII PHY in use. */
2206 case SIOCGMIIREG
: /* Read MII PHY register. */
2207 case SIOCSMIIREG
: /* Write to MII PHY register. */
2208 ret
= velocity_mii_ioctl(dev
, rq
, cmd
);
2214 if (!netif_running(dev
))
2215 pci_set_power_state(vptr
->pdev
, PCI_D3hot
);
2222 * Definition for our device driver. The PCI layer interface
2223 * uses this to handle all our card discover and plugging
2226 static struct pci_driver velocity_driver
= {
2227 .name
= VELOCITY_NAME
,
2228 .id_table
= velocity_id_table
,
2229 .probe
= velocity_found1
,
2230 .remove
= __devexit_p(velocity_remove1
),
2232 .suspend
= velocity_suspend
,
2233 .resume
= velocity_resume
,
2238 * velocity_init_module - load time function
2240 * Called when the velocity module is loaded. The PCI driver
2241 * is registered with the PCI layer, and in turn will call
2242 * the probe functions for each velocity adapter installed
2246 static int __init
velocity_init_module(void)
2250 velocity_register_notifier();
2251 ret
= pci_module_init(&velocity_driver
);
2253 velocity_unregister_notifier();
2258 * velocity_cleanup - module unload
2260 * When the velocity hardware is unloaded this function is called.
2261 * It will clean up the notifiers and the unregister the PCI
2262 * driver interface for this hardware. This in turn cleans up
2263 * all discovered interfaces before returning from the function
2266 static void __exit
velocity_cleanup_module(void)
2268 velocity_unregister_notifier();
2269 pci_unregister_driver(&velocity_driver
);
2272 module_init(velocity_init_module
);
2273 module_exit(velocity_cleanup_module
);
2277 * MII access , media link mode setting functions
2282 * mii_init - set up MII
2283 * @vptr: velocity adapter
2284 * @mii_status: links tatus
2286 * Set up the PHY for the current link state.
2289 static void mii_init(struct velocity_info
*vptr
, u32 mii_status
)
2293 switch (PHYID_GET_PHY_ID(vptr
->phy_id
)) {
2294 case PHYID_CICADA_CS8201
:
2296 * Reset to hardware default
2298 MII_REG_BITS_OFF((ANAR_ASMDIR
| ANAR_PAUSE
), MII_REG_ANAR
, vptr
->mac_regs
);
2300 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2301 * off it in NWay-forced half mode for NWay-forced v.s.
2302 * legacy-forced issue.
2304 if (vptr
->mii_status
& VELOCITY_DUPLEX_FULL
)
2305 MII_REG_BITS_ON(TCSR_ECHODIS
, MII_REG_TCSR
, vptr
->mac_regs
);
2307 MII_REG_BITS_OFF(TCSR_ECHODIS
, MII_REG_TCSR
, vptr
->mac_regs
);
2309 * Turn on Link/Activity LED enable bit for CIS8201
2311 MII_REG_BITS_ON(PLED_LALBE
, MII_REG_PLED
, vptr
->mac_regs
);
2313 case PHYID_VT3216_32BIT
:
2314 case PHYID_VT3216_64BIT
:
2316 * Reset to hardware default
2318 MII_REG_BITS_ON((ANAR_ASMDIR
| ANAR_PAUSE
), MII_REG_ANAR
, vptr
->mac_regs
);
2320 * Turn on ECHODIS bit in NWay-forced full mode and turn it
2321 * off it in NWay-forced half mode for NWay-forced v.s.
2322 * legacy-forced issue
2324 if (vptr
->mii_status
& VELOCITY_DUPLEX_FULL
)
2325 MII_REG_BITS_ON(TCSR_ECHODIS
, MII_REG_TCSR
, vptr
->mac_regs
);
2327 MII_REG_BITS_OFF(TCSR_ECHODIS
, MII_REG_TCSR
, vptr
->mac_regs
);
2330 case PHYID_MARVELL_1000
:
2331 case PHYID_MARVELL_1000S
:
2333 * Assert CRS on Transmit
2335 MII_REG_BITS_ON(PSCR_ACRSTX
, MII_REG_PSCR
, vptr
->mac_regs
);
2337 * Reset to hardware default
2339 MII_REG_BITS_ON((ANAR_ASMDIR
| ANAR_PAUSE
), MII_REG_ANAR
, vptr
->mac_regs
);
2344 velocity_mii_read(vptr
->mac_regs
, MII_REG_BMCR
, &BMCR
);
2345 if (BMCR
& BMCR_ISO
) {
2347 velocity_mii_write(vptr
->mac_regs
, MII_REG_BMCR
, BMCR
);
2352 * safe_disable_mii_autopoll - autopoll off
2353 * @regs: velocity registers
2355 * Turn off the autopoll and wait for it to disable on the chip
2358 static void safe_disable_mii_autopoll(struct mac_regs __iomem
* regs
)
2362 /* turn off MAUTO */
2363 writeb(0, ®s
->MIICR
);
2364 for (ww
= 0; ww
< W_MAX_TIMEOUT
; ww
++) {
2366 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE
, ®s
->MIISR
))
2372 * enable_mii_autopoll - turn on autopolling
2373 * @regs: velocity registers
2375 * Enable the MII link status autopoll feature on the Velocity
2376 * hardware. Wait for it to enable.
2379 static void enable_mii_autopoll(struct mac_regs __iomem
* regs
)
2383 writeb(0, &(regs
->MIICR
));
2384 writeb(MIIADR_SWMPL
, ®s
->MIIADR
);
2386 for (ii
= 0; ii
< W_MAX_TIMEOUT
; ii
++) {
2388 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE
, ®s
->MIISR
))
2392 writeb(MIICR_MAUTO
, ®s
->MIICR
);
2394 for (ii
= 0; ii
< W_MAX_TIMEOUT
; ii
++) {
2396 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE
, ®s
->MIISR
))
2403 * velocity_mii_read - read MII data
2404 * @regs: velocity registers
2405 * @index: MII register index
2406 * @data: buffer for received data
2408 * Perform a single read of an MII 16bit register. Returns zero
2409 * on success or -ETIMEDOUT if the PHY did not respond.
2412 static int velocity_mii_read(struct mac_regs __iomem
*regs
, u8 index
, u16
*data
)
2417 * Disable MIICR_MAUTO, so that mii addr can be set normally
2419 safe_disable_mii_autopoll(regs
);
2421 writeb(index
, ®s
->MIIADR
);
2423 BYTE_REG_BITS_ON(MIICR_RCMD
, ®s
->MIICR
);
2425 for (ww
= 0; ww
< W_MAX_TIMEOUT
; ww
++) {
2426 if (!(readb(®s
->MIICR
) & MIICR_RCMD
))
2430 *data
= readw(®s
->MIIDATA
);
2432 enable_mii_autopoll(regs
);
2433 if (ww
== W_MAX_TIMEOUT
)
2439 * velocity_mii_write - write MII data
2440 * @regs: velocity registers
2441 * @index: MII register index
2442 * @data: 16bit data for the MII register
2444 * Perform a single write to an MII 16bit register. Returns zero
2445 * on success or -ETIMEDOUT if the PHY did not respond.
2448 static int velocity_mii_write(struct mac_regs __iomem
*regs
, u8 mii_addr
, u16 data
)
2453 * Disable MIICR_MAUTO, so that mii addr can be set normally
2455 safe_disable_mii_autopoll(regs
);
2457 /* MII reg offset */
2458 writeb(mii_addr
, ®s
->MIIADR
);
2460 writew(data
, ®s
->MIIDATA
);
2462 /* turn on MIICR_WCMD */
2463 BYTE_REG_BITS_ON(MIICR_WCMD
, ®s
->MIICR
);
2465 /* W_MAX_TIMEOUT is the timeout period */
2466 for (ww
= 0; ww
< W_MAX_TIMEOUT
; ww
++) {
2468 if (!(readb(®s
->MIICR
) & MIICR_WCMD
))
2471 enable_mii_autopoll(regs
);
2473 if (ww
== W_MAX_TIMEOUT
)
2479 * velocity_get_opt_media_mode - get media selection
2480 * @vptr: velocity adapter
2482 * Get the media mode stored in EEPROM or module options and load
2483 * mii_status accordingly. The requested link state information
2487 static u32
velocity_get_opt_media_mode(struct velocity_info
*vptr
)
2491 switch (vptr
->options
.spd_dpx
) {
2493 status
= VELOCITY_AUTONEG_ENABLE
;
2495 case SPD_DPX_100_FULL
:
2496 status
= VELOCITY_SPEED_100
| VELOCITY_DUPLEX_FULL
;
2498 case SPD_DPX_10_FULL
:
2499 status
= VELOCITY_SPEED_10
| VELOCITY_DUPLEX_FULL
;
2501 case SPD_DPX_100_HALF
:
2502 status
= VELOCITY_SPEED_100
;
2504 case SPD_DPX_10_HALF
:
2505 status
= VELOCITY_SPEED_10
;
2508 vptr
->mii_status
= status
;
2513 * mii_set_auto_on - autonegotiate on
2516 * Enable autonegotation on this interface
2519 static void mii_set_auto_on(struct velocity_info
*vptr
)
2521 if (MII_REG_BITS_IS_ON(BMCR_AUTO
, MII_REG_BMCR
, vptr
->mac_regs
))
2522 MII_REG_BITS_ON(BMCR_REAUTO
, MII_REG_BMCR
, vptr
->mac_regs
);
2524 MII_REG_BITS_ON(BMCR_AUTO
, MII_REG_BMCR
, vptr
->mac_regs
);
2529 static void mii_set_auto_off(struct velocity_info * vptr)
2531 MII_REG_BITS_OFF(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2536 * set_mii_flow_control - flow control setup
2537 * @vptr: velocity interface
2539 * Set up the flow control on this interface according to
2540 * the supplied user/eeprom options.
2543 static void set_mii_flow_control(struct velocity_info
*vptr
)
2545 /*Enable or Disable PAUSE in ANAR */
2546 switch (vptr
->options
.flow_cntl
) {
2548 MII_REG_BITS_OFF(ANAR_PAUSE
, MII_REG_ANAR
, vptr
->mac_regs
);
2549 MII_REG_BITS_ON(ANAR_ASMDIR
, MII_REG_ANAR
, vptr
->mac_regs
);
2553 MII_REG_BITS_ON(ANAR_PAUSE
, MII_REG_ANAR
, vptr
->mac_regs
);
2554 MII_REG_BITS_ON(ANAR_ASMDIR
, MII_REG_ANAR
, vptr
->mac_regs
);
2557 case FLOW_CNTL_TX_RX
:
2558 MII_REG_BITS_ON(ANAR_PAUSE
, MII_REG_ANAR
, vptr
->mac_regs
);
2559 MII_REG_BITS_ON(ANAR_ASMDIR
, MII_REG_ANAR
, vptr
->mac_regs
);
2562 case FLOW_CNTL_DISABLE
:
2563 MII_REG_BITS_OFF(ANAR_PAUSE
, MII_REG_ANAR
, vptr
->mac_regs
);
2564 MII_REG_BITS_OFF(ANAR_ASMDIR
, MII_REG_ANAR
, vptr
->mac_regs
);
2572 * velocity_set_media_mode - set media mode
2573 * @mii_status: old MII link state
2575 * Check the media link state and configure the flow control
2576 * PHY and also velocity hardware setup accordingly. In particular
2577 * we need to set up CD polling and frame bursting.
2580 static int velocity_set_media_mode(struct velocity_info
*vptr
, u32 mii_status
)
2583 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2585 vptr
->mii_status
= mii_check_media_mode(vptr
->mac_regs
);
2586 curr_status
= vptr
->mii_status
& (~VELOCITY_LINK_FAIL
);
2588 /* Set mii link status */
2589 set_mii_flow_control(vptr
);
2592 Check if new status is consisent with current status
2593 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
2594 || (mii_status==curr_status)) {
2595 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
2596 vptr->mii_status=check_connection_type(vptr->mac_regs);
2597 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
2602 if (PHYID_GET_PHY_ID(vptr
->phy_id
) == PHYID_CICADA_CS8201
) {
2603 MII_REG_BITS_ON(AUXCR_MDPPS
, MII_REG_AUXCR
, vptr
->mac_regs
);
2607 * If connection type is AUTO
2609 if (mii_status
& VELOCITY_AUTONEG_ENABLE
) {
2610 VELOCITY_PRT(MSG_LEVEL_INFO
, "Velocity is AUTO mode\n");
2611 /* clear force MAC mode bit */
2612 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE
, ®s
->CHIPGCR
);
2613 /* set duplex mode of MAC according to duplex mode of MII */
2614 MII_REG_BITS_ON(ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
, MII_REG_ANAR
, vptr
->mac_regs
);
2615 MII_REG_BITS_ON(G1000CR_1000FD
| G1000CR_1000
, MII_REG_G1000CR
, vptr
->mac_regs
);
2616 MII_REG_BITS_ON(BMCR_SPEED1G
, MII_REG_BMCR
, vptr
->mac_regs
);
2618 /* enable AUTO-NEGO mode */
2619 mii_set_auto_on(vptr
);
2625 * 1. if it's 3119, disable frame bursting in halfduplex mode
2626 * and enable it in fullduplex mode
2627 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
2628 * 3. only enable CD heart beat counter in 10HD mode
2631 /* set force MAC mode bit */
2632 BYTE_REG_BITS_ON(CHIPGCR_FCMODE
, ®s
->CHIPGCR
);
2634 CHIPGCR
= readb(®s
->CHIPGCR
);
2635 CHIPGCR
&= ~CHIPGCR_FCGMII
;
2637 if (mii_status
& VELOCITY_DUPLEX_FULL
) {
2638 CHIPGCR
|= CHIPGCR_FCFDX
;
2639 writeb(CHIPGCR
, ®s
->CHIPGCR
);
2640 VELOCITY_PRT(MSG_LEVEL_INFO
, "set Velocity to forced full mode\n");
2641 if (vptr
->rev_id
< REV_ID_VT3216_A0
)
2642 BYTE_REG_BITS_OFF(TCR_TB2BDIS
, ®s
->TCR
);
2644 CHIPGCR
&= ~CHIPGCR_FCFDX
;
2645 VELOCITY_PRT(MSG_LEVEL_INFO
, "set Velocity to forced half mode\n");
2646 writeb(CHIPGCR
, ®s
->CHIPGCR
);
2647 if (vptr
->rev_id
< REV_ID_VT3216_A0
)
2648 BYTE_REG_BITS_ON(TCR_TB2BDIS
, ®s
->TCR
);
2651 MII_REG_BITS_OFF(G1000CR_1000FD
| G1000CR_1000
, MII_REG_G1000CR
, vptr
->mac_regs
);
2653 if (!(mii_status
& VELOCITY_DUPLEX_FULL
) && (mii_status
& VELOCITY_SPEED_10
)) {
2654 BYTE_REG_BITS_OFF(TESTCFG_HBDIS
, ®s
->TESTCFG
);
2656 BYTE_REG_BITS_ON(TESTCFG_HBDIS
, ®s
->TESTCFG
);
2658 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
2659 velocity_mii_read(vptr
->mac_regs
, MII_REG_ANAR
, &ANAR
);
2660 ANAR
&= (~(ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
));
2661 if (mii_status
& VELOCITY_SPEED_100
) {
2662 if (mii_status
& VELOCITY_DUPLEX_FULL
)
2667 if (mii_status
& VELOCITY_DUPLEX_FULL
)
2672 velocity_mii_write(vptr
->mac_regs
, MII_REG_ANAR
, ANAR
);
2673 /* enable AUTO-NEGO mode */
2674 mii_set_auto_on(vptr
);
2675 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
2677 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
2678 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
2679 return VELOCITY_LINK_CHANGE
;
2683 * mii_check_media_mode - check media state
2684 * @regs: velocity registers
2686 * Check the current MII status and determine the link status
2690 static u32
mii_check_media_mode(struct mac_regs __iomem
* regs
)
2695 if (!MII_REG_BITS_IS_ON(BMSR_LNK
, MII_REG_BMSR
, regs
))
2696 status
|= VELOCITY_LINK_FAIL
;
2698 if (MII_REG_BITS_IS_ON(G1000CR_1000FD
, MII_REG_G1000CR
, regs
))
2699 status
|= VELOCITY_SPEED_1000
| VELOCITY_DUPLEX_FULL
;
2700 else if (MII_REG_BITS_IS_ON(G1000CR_1000
, MII_REG_G1000CR
, regs
))
2701 status
|= (VELOCITY_SPEED_1000
);
2703 velocity_mii_read(regs
, MII_REG_ANAR
, &ANAR
);
2704 if (ANAR
& ANAR_TXFD
)
2705 status
|= (VELOCITY_SPEED_100
| VELOCITY_DUPLEX_FULL
);
2706 else if (ANAR
& ANAR_TX
)
2707 status
|= VELOCITY_SPEED_100
;
2708 else if (ANAR
& ANAR_10FD
)
2709 status
|= (VELOCITY_SPEED_10
| VELOCITY_DUPLEX_FULL
);
2711 status
|= (VELOCITY_SPEED_10
);
2714 if (MII_REG_BITS_IS_ON(BMCR_AUTO
, MII_REG_BMCR
, regs
)) {
2715 velocity_mii_read(regs
, MII_REG_ANAR
, &ANAR
);
2716 if ((ANAR
& (ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
))
2717 == (ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
)) {
2718 if (MII_REG_BITS_IS_ON(G1000CR_1000
| G1000CR_1000FD
, MII_REG_G1000CR
, regs
))
2719 status
|= VELOCITY_AUTONEG_ENABLE
;
2726 static u32
check_connection_type(struct mac_regs __iomem
* regs
)
2731 PHYSR0
= readb(®s
->PHYSR0
);
2734 if (!(PHYSR0 & PHYSR0_LINKGD))
2735 status|=VELOCITY_LINK_FAIL;
2738 if (PHYSR0
& PHYSR0_FDPX
)
2739 status
|= VELOCITY_DUPLEX_FULL
;
2741 if (PHYSR0
& PHYSR0_SPDG
)
2742 status
|= VELOCITY_SPEED_1000
;
2743 if (PHYSR0
& PHYSR0_SPD10
)
2744 status
|= VELOCITY_SPEED_10
;
2746 status
|= VELOCITY_SPEED_100
;
2748 if (MII_REG_BITS_IS_ON(BMCR_AUTO
, MII_REG_BMCR
, regs
)) {
2749 velocity_mii_read(regs
, MII_REG_ANAR
, &ANAR
);
2750 if ((ANAR
& (ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
))
2751 == (ANAR_TXFD
| ANAR_TX
| ANAR_10FD
| ANAR_10
)) {
2752 if (MII_REG_BITS_IS_ON(G1000CR_1000
| G1000CR_1000FD
, MII_REG_G1000CR
, regs
))
2753 status
|= VELOCITY_AUTONEG_ENABLE
;
2761 * enable_flow_control_ability - flow control
2762 * @vptr: veloity to configure
2764 * Set up flow control according to the flow control options
2765 * determined by the eeprom/configuration.
2768 static void enable_flow_control_ability(struct velocity_info
*vptr
)
2771 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2773 switch (vptr
->options
.flow_cntl
) {
2775 case FLOW_CNTL_DEFAULT
:
2776 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC
, ®s
->PHYSR0
))
2777 writel(CR0_FDXRFCEN
, ®s
->CR0Set
);
2779 writel(CR0_FDXRFCEN
, ®s
->CR0Clr
);
2781 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC
, ®s
->PHYSR0
))
2782 writel(CR0_FDXTFCEN
, ®s
->CR0Set
);
2784 writel(CR0_FDXTFCEN
, ®s
->CR0Clr
);
2788 writel(CR0_FDXTFCEN
, ®s
->CR0Set
);
2789 writel(CR0_FDXRFCEN
, ®s
->CR0Clr
);
2793 writel(CR0_FDXRFCEN
, ®s
->CR0Set
);
2794 writel(CR0_FDXTFCEN
, ®s
->CR0Clr
);
2797 case FLOW_CNTL_TX_RX
:
2798 writel(CR0_FDXTFCEN
, ®s
->CR0Set
);
2799 writel(CR0_FDXRFCEN
, ®s
->CR0Set
);
2802 case FLOW_CNTL_DISABLE
:
2803 writel(CR0_FDXRFCEN
, ®s
->CR0Clr
);
2804 writel(CR0_FDXTFCEN
, ®s
->CR0Clr
);
2815 * velocity_ethtool_up - pre hook for ethtool
2816 * @dev: network device
2818 * Called before an ethtool operation. We need to make sure the
2819 * chip is out of D3 state before we poke at it.
2822 static int velocity_ethtool_up(struct net_device
*dev
)
2824 struct velocity_info
*vptr
= netdev_priv(dev
);
2825 if (!netif_running(dev
))
2826 pci_set_power_state(vptr
->pdev
, PCI_D0
);
2831 * velocity_ethtool_down - post hook for ethtool
2832 * @dev: network device
2834 * Called after an ethtool operation. Restore the chip back to D3
2835 * state if it isn't running.
2838 static void velocity_ethtool_down(struct net_device
*dev
)
2840 struct velocity_info
*vptr
= netdev_priv(dev
);
2841 if (!netif_running(dev
))
2842 pci_set_power_state(vptr
->pdev
, PCI_D3hot
);
2845 static int velocity_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
2847 struct velocity_info
*vptr
= netdev_priv(dev
);
2848 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2850 status
= check_connection_type(vptr
->mac_regs
);
2852 cmd
->supported
= SUPPORTED_TP
| SUPPORTED_Autoneg
| SUPPORTED_10baseT_Half
| SUPPORTED_10baseT_Full
| SUPPORTED_100baseT_Half
| SUPPORTED_100baseT_Full
| SUPPORTED_1000baseT_Half
| SUPPORTED_1000baseT_Full
;
2853 if (status
& VELOCITY_SPEED_100
)
2854 cmd
->speed
= SPEED_100
;
2856 cmd
->speed
= SPEED_10
;
2857 cmd
->autoneg
= (status
& VELOCITY_AUTONEG_ENABLE
) ? AUTONEG_ENABLE
: AUTONEG_DISABLE
;
2858 cmd
->port
= PORT_TP
;
2859 cmd
->transceiver
= XCVR_INTERNAL
;
2860 cmd
->phy_address
= readb(®s
->MIIADR
) & 0x1F;
2862 if (status
& VELOCITY_DUPLEX_FULL
)
2863 cmd
->duplex
= DUPLEX_FULL
;
2865 cmd
->duplex
= DUPLEX_HALF
;
2870 static int velocity_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
2872 struct velocity_info
*vptr
= netdev_priv(dev
);
2877 curr_status
= check_connection_type(vptr
->mac_regs
);
2878 curr_status
&= (~VELOCITY_LINK_FAIL
);
2880 new_status
|= ((cmd
->autoneg
) ? VELOCITY_AUTONEG_ENABLE
: 0);
2881 new_status
|= ((cmd
->speed
== SPEED_100
) ? VELOCITY_SPEED_100
: 0);
2882 new_status
|= ((cmd
->speed
== SPEED_10
) ? VELOCITY_SPEED_10
: 0);
2883 new_status
|= ((cmd
->duplex
== DUPLEX_FULL
) ? VELOCITY_DUPLEX_FULL
: 0);
2885 if ((new_status
& VELOCITY_AUTONEG_ENABLE
) && (new_status
!= (curr_status
| VELOCITY_AUTONEG_ENABLE
)))
2888 velocity_set_media_mode(vptr
, new_status
);
2893 static u32
velocity_get_link(struct net_device
*dev
)
2895 struct velocity_info
*vptr
= netdev_priv(dev
);
2896 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2897 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD
, ®s
->PHYSR0
) ? 0 : 1;
2900 static void velocity_get_drvinfo(struct net_device
*dev
, struct ethtool_drvinfo
*info
)
2902 struct velocity_info
*vptr
= netdev_priv(dev
);
2903 strcpy(info
->driver
, VELOCITY_NAME
);
2904 strcpy(info
->version
, VELOCITY_VERSION
);
2905 strcpy(info
->bus_info
, pci_name(vptr
->pdev
));
2908 static void velocity_ethtool_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*wol
)
2910 struct velocity_info
*vptr
= netdev_priv(dev
);
2911 wol
->supported
= WAKE_PHY
| WAKE_MAGIC
| WAKE_UCAST
| WAKE_ARP
;
2912 wol
->wolopts
|= WAKE_MAGIC
;
2914 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2915 wol.wolopts|=WAKE_PHY;
2917 if (vptr
->wol_opts
& VELOCITY_WOL_UCAST
)
2918 wol
->wolopts
|= WAKE_UCAST
;
2919 if (vptr
->wol_opts
& VELOCITY_WOL_ARP
)
2920 wol
->wolopts
|= WAKE_ARP
;
2921 memcpy(&wol
->sopass
, vptr
->wol_passwd
, 6);
2924 static int velocity_ethtool_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*wol
)
2926 struct velocity_info
*vptr
= netdev_priv(dev
);
2928 if (!(wol
->wolopts
& (WAKE_PHY
| WAKE_MAGIC
| WAKE_UCAST
| WAKE_ARP
)))
2930 vptr
->wol_opts
= VELOCITY_WOL_MAGIC
;
2933 if (wol.wolopts & WAKE_PHY) {
2934 vptr->wol_opts|=VELOCITY_WOL_PHY;
2935 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
2939 if (wol
->wolopts
& WAKE_MAGIC
) {
2940 vptr
->wol_opts
|= VELOCITY_WOL_MAGIC
;
2941 vptr
->flags
|= VELOCITY_FLAGS_WOL_ENABLED
;
2943 if (wol
->wolopts
& WAKE_UCAST
) {
2944 vptr
->wol_opts
|= VELOCITY_WOL_UCAST
;
2945 vptr
->flags
|= VELOCITY_FLAGS_WOL_ENABLED
;
2947 if (wol
->wolopts
& WAKE_ARP
) {
2948 vptr
->wol_opts
|= VELOCITY_WOL_ARP
;
2949 vptr
->flags
|= VELOCITY_FLAGS_WOL_ENABLED
;
2951 memcpy(vptr
->wol_passwd
, wol
->sopass
, 6);
2955 static u32
velocity_get_msglevel(struct net_device
*dev
)
2960 static void velocity_set_msglevel(struct net_device
*dev
, u32 value
)
2965 static struct ethtool_ops velocity_ethtool_ops
= {
2966 .get_settings
= velocity_get_settings
,
2967 .set_settings
= velocity_set_settings
,
2968 .get_drvinfo
= velocity_get_drvinfo
,
2969 .get_wol
= velocity_ethtool_get_wol
,
2970 .set_wol
= velocity_ethtool_set_wol
,
2971 .get_msglevel
= velocity_get_msglevel
,
2972 .set_msglevel
= velocity_set_msglevel
,
2973 .get_link
= velocity_get_link
,
2974 .begin
= velocity_ethtool_up
,
2975 .complete
= velocity_ethtool_down
2979 * velocity_mii_ioctl - MII ioctl handler
2980 * @dev: network device
2981 * @ifr: the ifreq block for the ioctl
2984 * Process MII requests made via ioctl from the network layer. These
2985 * are used by tools like kudzu to interrogate the link state of the
2989 static int velocity_mii_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
2991 struct velocity_info
*vptr
= netdev_priv(dev
);
2992 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
2993 unsigned long flags
;
2994 struct mii_ioctl_data
*miidata
= if_mii(ifr
);
2999 miidata
->phy_id
= readb(®s
->MIIADR
) & 0x1f;
3002 if (!capable(CAP_NET_ADMIN
))
3004 if(velocity_mii_read(vptr
->mac_regs
, miidata
->reg_num
& 0x1f, &(miidata
->val_out
)) < 0)
3008 if (!capable(CAP_NET_ADMIN
))
3010 spin_lock_irqsave(&vptr
->lock
, flags
);
3011 err
= velocity_mii_write(vptr
->mac_regs
, miidata
->reg_num
& 0x1f, miidata
->val_in
);
3012 spin_unlock_irqrestore(&vptr
->lock
, flags
);
3013 check_connection_type(vptr
->mac_regs
);
3026 * velocity_save_context - save registers
3028 * @context: buffer for stored context
3030 * Retrieve the current configuration from the velocity hardware
3031 * and stash it in the context structure, for use by the context
3032 * restore functions. This allows us to save things we need across
3036 static void velocity_save_context(struct velocity_info
*vptr
, struct velocity_context
* context
)
3038 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
3040 u8 __iomem
*ptr
= (u8 __iomem
*)regs
;
3042 for (i
= MAC_REG_PAR
; i
< MAC_REG_CR0_CLR
; i
+= 4)
3043 *((u32
*) (context
->mac_reg
+ i
)) = readl(ptr
+ i
);
3045 for (i
= MAC_REG_MAR
; i
< MAC_REG_TDCSR_CLR
; i
+= 4)
3046 *((u32
*) (context
->mac_reg
+ i
)) = readl(ptr
+ i
);
3048 for (i
= MAC_REG_RDBASE_LO
; i
< MAC_REG_FIFO_TEST0
; i
+= 4)
3049 *((u32
*) (context
->mac_reg
+ i
)) = readl(ptr
+ i
);
3054 * velocity_restore_context - restore registers
3056 * @context: buffer for stored context
3058 * Reload the register configuration from the velocity context
3059 * created by velocity_save_context.
3062 static void velocity_restore_context(struct velocity_info
*vptr
, struct velocity_context
*context
)
3064 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
3066 u8 __iomem
*ptr
= (u8 __iomem
*)regs
;
3068 for (i
= MAC_REG_PAR
; i
< MAC_REG_CR0_SET
; i
+= 4) {
3069 writel(*((u32
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3073 for (i
= MAC_REG_CR1_SET
; i
< MAC_REG_CR0_CLR
; i
++) {
3075 writeb(~(*((u8
*) (context
->mac_reg
+ i
))), ptr
+ i
+ 4);
3077 writeb(*((u8
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3080 for (i
= MAC_REG_MAR
; i
< MAC_REG_IMR
; i
+= 4) {
3081 writel(*((u32
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3084 for (i
= MAC_REG_RDBASE_LO
; i
< MAC_REG_FIFO_TEST0
; i
+= 4) {
3085 writel(*((u32
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3088 for (i
= MAC_REG_TDCSR_SET
; i
<= MAC_REG_RDCSR_SET
; i
++) {
3089 writeb(*((u8
*) (context
->mac_reg
+ i
)), ptr
+ i
);
3095 * wol_calc_crc - WOL CRC
3096 * @pattern: data pattern
3097 * @mask_pattern: mask
3099 * Compute the wake on lan crc hashes for the packet header
3100 * we are interested in.
3103 static u16
wol_calc_crc(int size
, u8
* pattern
, u8
*mask_pattern
)
3109 for (i
= 0; i
< size
; i
++) {
3110 mask
= mask_pattern
[i
];
3112 /* Skip this loop if the mask equals to zero */
3116 for (j
= 0; j
< 8; j
++) {
3117 if ((mask
& 0x01) == 0) {
3122 crc
= crc_ccitt(crc
, &(pattern
[i
* 8 + j
]), 1);
3125 /* Finally, invert the result once to get the correct data */
3127 return bitreverse(crc
) >> 16;
3131 * velocity_set_wol - set up for wake on lan
3132 * @vptr: velocity to set WOL status on
3134 * Set a card up for wake on lan either by unicast or by
3137 * FIXME: check static buffer is safe here
3140 static int velocity_set_wol(struct velocity_info
*vptr
)
3142 struct mac_regs __iomem
* regs
= vptr
->mac_regs
;
3146 static u32 mask_pattern
[2][4] = {
3147 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3148 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
3151 writew(0xFFFF, ®s
->WOLCRClr
);
3152 writeb(WOLCFG_SAB
| WOLCFG_SAM
, ®s
->WOLCFGSet
);
3153 writew(WOLCR_MAGIC_EN
, ®s
->WOLCRSet
);
3156 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3157 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
3160 if (vptr
->wol_opts
& VELOCITY_WOL_UCAST
) {
3161 writew(WOLCR_UNICAST_EN
, ®s
->WOLCRSet
);
3164 if (vptr
->wol_opts
& VELOCITY_WOL_ARP
) {
3165 struct arp_packet
*arp
= (struct arp_packet
*) buf
;
3167 memset(buf
, 0, sizeof(struct arp_packet
) + 7);
3169 for (i
= 0; i
< 4; i
++)
3170 writel(mask_pattern
[0][i
], ®s
->ByteMask
[0][i
]);
3172 arp
->type
= htons(ETH_P_ARP
);
3173 arp
->ar_op
= htons(1);
3175 memcpy(arp
->ar_tip
, vptr
->ip_addr
, 4);
3177 crc
= wol_calc_crc((sizeof(struct arp_packet
) + 7) / 8, buf
,
3178 (u8
*) & mask_pattern
[0][0]);
3180 writew(crc
, ®s
->PatternCRC
[0]);
3181 writew(WOLCR_ARP_EN
, ®s
->WOLCRSet
);
3184 BYTE_REG_BITS_ON(PWCFG_WOLTYPE
, ®s
->PWCFGSet
);
3185 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN
, ®s
->PWCFGSet
);
3187 writew(0x0FFF, ®s
->WOLSRClr
);
3189 if (vptr
->mii_status
& VELOCITY_AUTONEG_ENABLE
) {
3190 if (PHYID_GET_PHY_ID(vptr
->phy_id
) == PHYID_CICADA_CS8201
)
3191 MII_REG_BITS_ON(AUXCR_MDPPS
, MII_REG_AUXCR
, vptr
->mac_regs
);
3193 MII_REG_BITS_OFF(G1000CR_1000FD
| G1000CR_1000
, MII_REG_G1000CR
, vptr
->mac_regs
);
3196 if (vptr
->mii_status
& VELOCITY_SPEED_1000
)
3197 MII_REG_BITS_ON(BMCR_REAUTO
, MII_REG_BMCR
, vptr
->mac_regs
);
3199 BYTE_REG_BITS_ON(CHIPGCR_FCMODE
, ®s
->CHIPGCR
);
3203 GCR
= readb(®s
->CHIPGCR
);
3204 GCR
= (GCR
& ~CHIPGCR_FCGMII
) | CHIPGCR_FCFDX
;
3205 writeb(GCR
, ®s
->CHIPGCR
);
3208 BYTE_REG_BITS_OFF(ISR_PWEI
, ®s
->ISR
);
3209 /* Turn on SWPTAG just before entering power mode */
3210 BYTE_REG_BITS_ON(STICKHW_SWPTAG
, ®s
->STICKHW
);
3211 /* Go to bed ..... */
3212 BYTE_REG_BITS_ON((STICKHW_DS1
| STICKHW_DS0
), ®s
->STICKHW
);
3217 static int velocity_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3219 struct net_device
*dev
= pci_get_drvdata(pdev
);
3220 struct velocity_info
*vptr
= netdev_priv(dev
);
3221 unsigned long flags
;
3223 if(!netif_running(vptr
->dev
))
3226 netif_device_detach(vptr
->dev
);
3228 spin_lock_irqsave(&vptr
->lock
, flags
);
3229 pci_save_state(pdev
);
3231 if (vptr
->flags
& VELOCITY_FLAGS_WOL_ENABLED
) {
3232 velocity_get_ip(vptr
);
3233 velocity_save_context(vptr
, &vptr
->context
);
3234 velocity_shutdown(vptr
);
3235 velocity_set_wol(vptr
);
3236 pci_enable_wake(pdev
, 3, 1);
3237 pci_set_power_state(pdev
, PCI_D3hot
);
3239 velocity_save_context(vptr
, &vptr
->context
);
3240 velocity_shutdown(vptr
);
3241 pci_disable_device(pdev
);
3242 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
3245 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
3247 spin_unlock_irqrestore(&vptr
->lock
, flags
);
3251 static int velocity_resume(struct pci_dev
*pdev
)
3253 struct net_device
*dev
= pci_get_drvdata(pdev
);
3254 struct velocity_info
*vptr
= netdev_priv(dev
);
3255 unsigned long flags
;
3258 if(!netif_running(vptr
->dev
))
3261 pci_set_power_state(pdev
, PCI_D0
);
3262 pci_enable_wake(pdev
, 0, 0);
3263 pci_restore_state(pdev
);
3265 mac_wol_reset(vptr
->mac_regs
);
3267 spin_lock_irqsave(&vptr
->lock
, flags
);
3268 velocity_restore_context(vptr
, &vptr
->context
);
3269 velocity_init_registers(vptr
, VELOCITY_INIT_WOL
);
3270 mac_disable_int(vptr
->mac_regs
);
3272 velocity_tx_srv(vptr
, 0);
3274 for (i
= 0; i
< vptr
->num_txq
; i
++) {
3275 if (vptr
->td_used
[i
]) {
3276 mac_tx_queue_wake(vptr
->mac_regs
, i
);
3280 mac_enable_int(vptr
->mac_regs
);
3281 spin_unlock_irqrestore(&vptr
->lock
, flags
);
3282 netif_device_attach(vptr
->dev
);
3287 static int velocity_netdev_event(struct notifier_block
*nb
, unsigned long notification
, void *ptr
)
3289 struct in_ifaddr
*ifa
= (struct in_ifaddr
*) ptr
;
3292 struct net_device
*dev
= ifa
->ifa_dev
->dev
;
3293 struct velocity_info
*vptr
;
3294 unsigned long flags
;
3296 spin_lock_irqsave(&velocity_dev_list_lock
, flags
);
3297 list_for_each_entry(vptr
, &velocity_dev_list
, list
) {
3298 if (vptr
->dev
== dev
) {
3299 velocity_get_ip(vptr
);
3303 spin_unlock_irqrestore(&velocity_dev_list_lock
, flags
);