2 * e100net.c: A network driver for the ETRAX 100LX network controller.
4 * Copyright (c) 1998-2002 Axis Communications AB.
6 * The outline of this driver comes from skeleton.c.
11 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/delay.h>
15 #include <linux/types.h>
16 #include <linux/fcntl.h>
17 #include <linux/interrupt.h>
18 #include <linux/ptrace.h>
19 #include <linux/ioport.h>
21 #include <linux/slab.h>
22 #include <linux/string.h>
23 #include <linux/spinlock.h>
24 #include <linux/errno.h>
25 #include <linux/init.h>
26 #include <linux/bitops.h>
29 #include <linux/mii.h>
30 #include <linux/netdevice.h>
31 #include <linux/etherdevice.h>
32 #include <linux/skbuff.h>
33 #include <linux/ethtool.h>
35 #include <arch/svinto.h>/* DMA and register descriptions */
36 #include <asm/io.h> /* CRIS_LED_* I/O functions */
39 #include <asm/system.h>
40 #include <asm/ethernet.h>
41 #include <asm/cache.h>
42 #include <arch/io_interface_mux.h>
48 * The name of the card. Is used for messages and in the requests for
49 * io regions, irqs and dma channels
52 static const char* cardname
= "ETRAX 100LX built-in ethernet controller";
54 /* A default ethernet address. Highlevel SW will set the real one later */
56 static struct sockaddr default_mac
= {
58 { 0x00, 0x40, 0x8C, 0xCD, 0x00, 0x00 }
61 /* Information that need to be kept for each board. */
63 struct net_device_stats stats
;
64 struct mii_if_info mii_if
;
66 /* Tx control lock. This protects the transmit buffer ring
67 * state along with the "tx full" state of the driver. This
68 * means all netif_queue flow control actions are protected
69 * by this lock as well.
73 spinlock_t led_lock
; /* Protect LED state */
74 spinlock_t transceiver_lock
; /* Protect transceiver state. */
77 typedef struct etrax_eth_descr
79 etrax_dma_descr descr
;
83 /* Some transceivers requires special handling */
84 struct transceiver_ops
87 void (*check_speed
)(struct net_device
* dev
);
88 void (*check_duplex
)(struct net_device
* dev
);
99 /* Dma descriptors etc. */
101 #define MAX_MEDIA_DATA_SIZE 1522
103 #define MIN_PACKET_LEN 46
104 #define ETHER_HEAD_LEN 14
109 #define MDIO_START 0x1
110 #define MDIO_READ 0x2
111 #define MDIO_WRITE 0x1
112 #define MDIO_PREAMBLE 0xfffffffful
114 /* Broadcom specific */
115 #define MDIO_AUX_CTRL_STATUS_REG 0x18
116 #define MDIO_BC_FULL_DUPLEX_IND 0x1
117 #define MDIO_BC_SPEED 0x2
120 #define MDIO_TDK_DIAGNOSTIC_REG 18
121 #define MDIO_TDK_DIAGNOSTIC_RATE 0x400
122 #define MDIO_TDK_DIAGNOSTIC_DPLX 0x800
124 /*Intel LXT972A specific*/
125 #define MDIO_INT_STATUS_REG_2 0x0011
126 #define MDIO_INT_FULL_DUPLEX_IND (1 << 9)
127 #define MDIO_INT_SPEED (1 << 14)
129 /* Network flash constants */
130 #define NET_FLASH_TIME (HZ/50) /* 20 ms */
131 #define NET_FLASH_PAUSE (HZ/100) /* 10 ms */
132 #define NET_LINK_UP_CHECK_INTERVAL (2*HZ) /* 2 s */
133 #define NET_DUPLEX_CHECK_INTERVAL (2*HZ) /* 2 s */
135 #define NO_NETWORK_ACTIVITY 0
136 #define NETWORK_ACTIVITY 1
138 #define NBR_OF_RX_DESC 32
139 #define NBR_OF_TX_DESC 16
141 /* Large packets are sent directly to upper layers while small packets are */
142 /* copied (to reduce memory waste). The following constant decides the breakpoint */
143 #define RX_COPYBREAK 256
145 /* Due to a chip bug we need to flush the cache when descriptors are returned */
146 /* to the DMA. To decrease performance impact we return descriptors in chunks. */
147 /* The following constant determines the number of descriptors to return. */
148 #define RX_QUEUE_THRESHOLD NBR_OF_RX_DESC/2
150 #define GET_BIT(bit,val) (((val) >> (bit)) & 0x01)
152 /* Define some macros to access ETRAX 100 registers */
153 #define SETF(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \
154 IO_FIELD_(reg##_, field##_, val)
155 #define SETS(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \
156 IO_STATE_(reg##_, field##_, _##val)
158 static etrax_eth_descr
*myNextRxDesc
; /* Points to the next descriptor to
160 static etrax_eth_descr
*myLastRxDesc
; /* The last processed descriptor */
162 static etrax_eth_descr RxDescList
[NBR_OF_RX_DESC
] __attribute__ ((aligned(32)));
164 static etrax_eth_descr
* myFirstTxDesc
; /* First packet not yet sent */
165 static etrax_eth_descr
* myLastTxDesc
; /* End of send queue */
166 static etrax_eth_descr
* myNextTxDesc
; /* Next descriptor to use */
167 static etrax_eth_descr TxDescList
[NBR_OF_TX_DESC
] __attribute__ ((aligned(32)));
169 static unsigned int network_rec_config_shadow
= 0;
171 static unsigned int network_tr_ctrl_shadow
= 0;
173 /* Network speed indication. */
174 static DEFINE_TIMER(speed_timer
, NULL
, 0, 0);
175 static DEFINE_TIMER(clear_led_timer
, NULL
, 0, 0);
176 static int current_speed
; /* Speed read from transceiver */
177 static int current_speed_selection
; /* Speed selected by user */
178 static unsigned long led_next_time
;
179 static int led_active
;
180 static int rx_queue_len
;
183 static DEFINE_TIMER(duplex_timer
, NULL
, 0, 0);
184 static int full_duplex
;
185 static enum duplex current_duplex
;
187 /* Index to functions, as function prototypes. */
189 static int etrax_ethernet_init(void);
191 static int e100_open(struct net_device
*dev
);
192 static int e100_set_mac_address(struct net_device
*dev
, void *addr
);
193 static int e100_send_packet(struct sk_buff
*skb
, struct net_device
*dev
);
194 static irqreturn_t
e100rxtx_interrupt(int irq
, void *dev_id
);
195 static irqreturn_t
e100nw_interrupt(int irq
, void *dev_id
);
196 static void e100_rx(struct net_device
*dev
);
197 static int e100_close(struct net_device
*dev
);
198 static int e100_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
);
199 static int e100_set_config(struct net_device
* dev
, struct ifmap
* map
);
200 static void e100_tx_timeout(struct net_device
*dev
);
201 static struct net_device_stats
*e100_get_stats(struct net_device
*dev
);
202 static void set_multicast_list(struct net_device
*dev
);
203 static void e100_hardware_send_packet(struct net_local
* np
, char *buf
, int length
);
204 static void update_rx_stats(struct net_device_stats
*);
205 static void update_tx_stats(struct net_device_stats
*);
206 static int e100_probe_transceiver(struct net_device
* dev
);
208 static void e100_check_speed(unsigned long priv
);
209 static void e100_set_speed(struct net_device
* dev
, unsigned long speed
);
210 static void e100_check_duplex(unsigned long priv
);
211 static void e100_set_duplex(struct net_device
* dev
, enum duplex
);
212 static void e100_negotiate(struct net_device
* dev
);
214 static int e100_get_mdio_reg(struct net_device
*dev
, int phy_id
, int location
);
215 static void e100_set_mdio_reg(struct net_device
*dev
, int phy_id
, int location
, int value
);
217 static void e100_send_mdio_cmd(unsigned short cmd
, int write_cmd
);
218 static void e100_send_mdio_bit(unsigned char bit
);
219 static unsigned char e100_receive_mdio_bit(void);
220 static void e100_reset_transceiver(struct net_device
* net
);
222 static void e100_clear_network_leds(unsigned long dummy
);
223 static void e100_set_network_leds(int active
);
225 static const struct ethtool_ops e100_ethtool_ops
;
226 #if defined(CONFIG_ETRAX_NO_PHY)
227 static void dummy_check_speed(struct net_device
* dev
);
228 static void dummy_check_duplex(struct net_device
* dev
);
230 static void broadcom_check_speed(struct net_device
* dev
);
231 static void broadcom_check_duplex(struct net_device
* dev
);
232 static void tdk_check_speed(struct net_device
* dev
);
233 static void tdk_check_duplex(struct net_device
* dev
);
234 static void intel_check_speed(struct net_device
* dev
);
235 static void intel_check_duplex(struct net_device
* dev
);
236 static void generic_check_speed(struct net_device
* dev
);
237 static void generic_check_duplex(struct net_device
* dev
);
239 #ifdef CONFIG_NET_POLL_CONTROLLER
240 static void e100_netpoll(struct net_device
* dev
);
243 static int autoneg_normal
= 1;
245 struct transceiver_ops transceivers
[] =
247 #if defined(CONFIG_ETRAX_NO_PHY)
248 {0x0000, dummy_check_speed
, dummy_check_duplex
} /* Dummy */
250 {0x1018, broadcom_check_speed
, broadcom_check_duplex
}, /* Broadcom */
251 {0xC039, tdk_check_speed
, tdk_check_duplex
}, /* TDK 2120 */
252 {0x039C, tdk_check_speed
, tdk_check_duplex
}, /* TDK 2120C */
253 {0x04de, intel_check_speed
, intel_check_duplex
}, /* Intel LXT972A*/
254 {0x0000, generic_check_speed
, generic_check_duplex
} /* Generic, must be last */
258 struct transceiver_ops
* transceiver
= &transceivers
[0];
260 static const struct net_device_ops e100_netdev_ops
= {
261 .ndo_open
= e100_open
,
262 .ndo_stop
= e100_close
,
263 .ndo_start_xmit
= e100_send_packet
,
264 .ndo_tx_timeout
= e100_tx_timeout
,
265 .ndo_get_stats
= e100_get_stats
,
266 .ndo_set_multicast_list
= set_multicast_list
,
267 .ndo_do_ioctl
= e100_ioctl
,
268 .ndo_set_mac_address
= e100_set_mac_address
,
269 .ndo_validate_addr
= eth_validate_addr
,
270 .ndo_change_mtu
= eth_change_mtu
,
271 .ndo_set_config
= e100_set_config
,
272 #ifdef CONFIG_NET_POLL_CONTROLLER
273 .ndo_poll_controller
= e100_netpoll
,
277 #define tx_done(dev) (*R_DMA_CH0_CMD == 0)
280 * Check for a network adaptor of this type, and return '0' if one exists.
281 * If dev->base_addr == 0, probe all likely locations.
282 * If dev->base_addr == 1, always return failure.
283 * If dev->base_addr == 2, allocate space for the device and return success
284 * (detachable devices only).
288 etrax_ethernet_init(void)
290 struct net_device
*dev
;
291 struct net_local
* np
;
295 "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 1998-2007 Axis Communications AB\n");
297 if (cris_request_io_interface(if_eth
, cardname
)) {
298 printk(KERN_CRIT
"etrax_ethernet_init failed to get IO interface\n");
302 dev
= alloc_etherdev(sizeof(struct net_local
));
306 np
= netdev_priv(dev
);
308 /* we do our own locking */
309 dev
->features
|= NETIF_F_LLTX
;
311 dev
->base_addr
= (unsigned int)R_NETWORK_SA_0
; /* just to have something to show */
313 /* now setup our etrax specific stuff */
315 dev
->irq
= NETWORK_DMA_RX_IRQ_NBR
; /* we really use DMATX as well... */
316 dev
->dma
= NETWORK_RX_DMA_NBR
;
318 /* fill in our handlers so the network layer can talk to us in the future */
320 dev
->ethtool_ops
= &e100_ethtool_ops
;
321 dev
->netdev_ops
= &e100_netdev_ops
;
323 spin_lock_init(&np
->lock
);
324 spin_lock_init(&np
->led_lock
);
325 spin_lock_init(&np
->transceiver_lock
);
327 /* Initialise the list of Etrax DMA-descriptors */
329 /* Initialise receive descriptors */
331 for (i
= 0; i
< NBR_OF_RX_DESC
; i
++) {
332 /* Allocate two extra cachelines to make sure that buffer used
333 * by DMA does not share cacheline with any other data (to
336 RxDescList
[i
].skb
= dev_alloc_skb(MAX_MEDIA_DATA_SIZE
+ 2 * L1_CACHE_BYTES
);
337 if (!RxDescList
[i
].skb
)
339 RxDescList
[i
].descr
.ctrl
= 0;
340 RxDescList
[i
].descr
.sw_len
= MAX_MEDIA_DATA_SIZE
;
341 RxDescList
[i
].descr
.next
= virt_to_phys(&RxDescList
[i
+ 1]);
342 RxDescList
[i
].descr
.buf
= L1_CACHE_ALIGN(virt_to_phys(RxDescList
[i
].skb
->data
));
343 RxDescList
[i
].descr
.status
= 0;
344 RxDescList
[i
].descr
.hw_len
= 0;
345 prepare_rx_descriptor(&RxDescList
[i
].descr
);
348 RxDescList
[NBR_OF_RX_DESC
- 1].descr
.ctrl
= d_eol
;
349 RxDescList
[NBR_OF_RX_DESC
- 1].descr
.next
= virt_to_phys(&RxDescList
[0]);
352 /* Initialize transmit descriptors */
353 for (i
= 0; i
< NBR_OF_TX_DESC
; i
++) {
354 TxDescList
[i
].descr
.ctrl
= 0;
355 TxDescList
[i
].descr
.sw_len
= 0;
356 TxDescList
[i
].descr
.next
= virt_to_phys(&TxDescList
[i
+ 1].descr
);
357 TxDescList
[i
].descr
.buf
= 0;
358 TxDescList
[i
].descr
.status
= 0;
359 TxDescList
[i
].descr
.hw_len
= 0;
360 TxDescList
[i
].skb
= 0;
363 TxDescList
[NBR_OF_TX_DESC
- 1].descr
.ctrl
= d_eol
;
364 TxDescList
[NBR_OF_TX_DESC
- 1].descr
.next
= virt_to_phys(&TxDescList
[0].descr
);
366 /* Initialise initial pointers */
368 myNextRxDesc
= &RxDescList
[0];
369 myLastRxDesc
= &RxDescList
[NBR_OF_RX_DESC
- 1];
370 myFirstTxDesc
= &TxDescList
[0];
371 myNextTxDesc
= &TxDescList
[0];
372 myLastTxDesc
= &TxDescList
[NBR_OF_TX_DESC
- 1];
374 /* Register device */
375 err
= register_netdev(dev
);
381 /* set the default MAC address */
383 e100_set_mac_address(dev
, &default_mac
);
385 /* Initialize speed indicator stuff. */
388 current_speed_selection
= 0; /* Auto */
389 speed_timer
.expires
= jiffies
+ NET_LINK_UP_CHECK_INTERVAL
;
390 speed_timer
.data
= (unsigned long)dev
;
391 speed_timer
.function
= e100_check_speed
;
393 clear_led_timer
.function
= e100_clear_network_leds
;
394 clear_led_timer
.data
= (unsigned long)dev
;
397 current_duplex
= autoneg
;
398 duplex_timer
.expires
= jiffies
+ NET_DUPLEX_CHECK_INTERVAL
;
399 duplex_timer
.data
= (unsigned long)dev
;
400 duplex_timer
.function
= e100_check_duplex
;
402 /* Initialize mii interface */
403 np
->mii_if
.phy_id_mask
= 0x1f;
404 np
->mii_if
.reg_num_mask
= 0x1f;
405 np
->mii_if
.dev
= dev
;
406 np
->mii_if
.mdio_read
= e100_get_mdio_reg
;
407 np
->mii_if
.mdio_write
= e100_set_mdio_reg
;
409 /* Initialize group address registers to make sure that no */
410 /* unwanted addresses are matched */
411 *R_NETWORK_GA_0
= 0x00000000;
412 *R_NETWORK_GA_1
= 0x00000000;
414 /* Initialize next time the led can flash */
415 led_next_time
= jiffies
;
419 /* set MAC address of the interface. called from the core after a
420 * SIOCSIFADDR ioctl, and from the bootup above.
424 e100_set_mac_address(struct net_device
*dev
, void *p
)
426 struct net_local
*np
= netdev_priv(dev
);
427 struct sockaddr
*addr
= p
;
429 spin_lock(&np
->lock
); /* preemption protection */
433 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
435 /* Write it to the hardware.
436 * Note the way the address is wrapped:
437 * *R_NETWORK_SA_0 = a0_0 | (a0_1 << 8) | (a0_2 << 16) | (a0_3 << 24);
438 * *R_NETWORK_SA_1 = a0_4 | (a0_5 << 8);
441 *R_NETWORK_SA_0
= dev
->dev_addr
[0] | (dev
->dev_addr
[1] << 8) |
442 (dev
->dev_addr
[2] << 16) | (dev
->dev_addr
[3] << 24);
443 *R_NETWORK_SA_1
= dev
->dev_addr
[4] | (dev
->dev_addr
[5] << 8);
446 /* show it in the log as well */
448 printk(KERN_INFO
"%s: changed MAC to %pM\n", dev
->name
, dev
->dev_addr
);
450 spin_unlock(&np
->lock
);
456 * Open/initialize the board. This is called (in the current kernel)
457 * sometime after booting when the 'ifconfig' program is run.
459 * This routine should set everything up anew at each open, even
460 * registers that "should" only need to be set once at boot, so that
461 * there is non-reboot way to recover if something goes wrong.
465 e100_open(struct net_device
*dev
)
469 /* enable the MDIO output pin */
471 *R_NETWORK_MGM_CTRL
= IO_STATE(R_NETWORK_MGM_CTRL
, mdoe
, enable
);
474 IO_STATE(R_IRQ_MASK0_CLR
, overrun
, clr
) |
475 IO_STATE(R_IRQ_MASK0_CLR
, underrun
, clr
) |
476 IO_STATE(R_IRQ_MASK0_CLR
, excessive_col
, clr
);
478 /* clear dma0 and 1 eop and descr irq masks */
480 IO_STATE(R_IRQ_MASK2_CLR
, dma0_descr
, clr
) |
481 IO_STATE(R_IRQ_MASK2_CLR
, dma0_eop
, clr
) |
482 IO_STATE(R_IRQ_MASK2_CLR
, dma1_descr
, clr
) |
483 IO_STATE(R_IRQ_MASK2_CLR
, dma1_eop
, clr
);
485 /* Reset and wait for the DMA channels */
487 RESET_DMA(NETWORK_TX_DMA_NBR
);
488 RESET_DMA(NETWORK_RX_DMA_NBR
);
489 WAIT_DMA(NETWORK_TX_DMA_NBR
);
490 WAIT_DMA(NETWORK_RX_DMA_NBR
);
492 /* Initialise the etrax network controller */
494 /* allocate the irq corresponding to the receiving DMA */
496 if (request_irq(NETWORK_DMA_RX_IRQ_NBR
, e100rxtx_interrupt
,
497 IRQF_SAMPLE_RANDOM
, cardname
, (void *)dev
)) {
501 /* allocate the irq corresponding to the transmitting DMA */
503 if (request_irq(NETWORK_DMA_TX_IRQ_NBR
, e100rxtx_interrupt
, 0,
504 cardname
, (void *)dev
)) {
508 /* allocate the irq corresponding to the network errors etc */
510 if (request_irq(NETWORK_STATUS_IRQ_NBR
, e100nw_interrupt
, 0,
511 cardname
, (void *)dev
)) {
516 * Always allocate the DMA channels after the IRQ,
517 * and clean up on failure.
520 if (cris_request_dma(NETWORK_TX_DMA_NBR
,
522 DMA_VERBOSE_ON_ERROR
,
527 if (cris_request_dma(NETWORK_RX_DMA_NBR
,
529 DMA_VERBOSE_ON_ERROR
,
534 /* give the HW an idea of what MAC address we want */
536 *R_NETWORK_SA_0
= dev
->dev_addr
[0] | (dev
->dev_addr
[1] << 8) |
537 (dev
->dev_addr
[2] << 16) | (dev
->dev_addr
[3] << 24);
538 *R_NETWORK_SA_1
= dev
->dev_addr
[4] | (dev
->dev_addr
[5] << 8);
542 /* use promiscuous mode for testing */
543 *R_NETWORK_GA_0
= 0xffffffff;
544 *R_NETWORK_GA_1
= 0xffffffff;
546 *R_NETWORK_REC_CONFIG
= 0xd; /* broadcast rec, individ. rec, ma0 enabled */
548 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, max_size
, size1522
);
549 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, broadcast
, receive
);
550 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, ma0
, enable
);
551 SETF(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, duplex
, full_duplex
);
552 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
555 *R_NETWORK_GEN_CONFIG
=
556 IO_STATE(R_NETWORK_GEN_CONFIG
, phy
, mii_clk
) |
557 IO_STATE(R_NETWORK_GEN_CONFIG
, enable
, on
);
559 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, clr
);
560 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, delay
, none
);
561 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, cancel
, dont
);
562 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, cd
, enable
);
563 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, retry
, enable
);
564 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, pad
, enable
);
565 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, crc
, enable
);
566 *R_NETWORK_TR_CTRL
= network_tr_ctrl_shadow
;
568 local_irq_save(flags
);
570 /* enable the irq's for ethernet DMA */
573 IO_STATE(R_IRQ_MASK2_SET
, dma0_eop
, set
) |
574 IO_STATE(R_IRQ_MASK2_SET
, dma1_eop
, set
);
577 IO_STATE(R_IRQ_MASK0_SET
, overrun
, set
) |
578 IO_STATE(R_IRQ_MASK0_SET
, underrun
, set
) |
579 IO_STATE(R_IRQ_MASK0_SET
, excessive_col
, set
);
581 /* make sure the irqs are cleared */
583 *R_DMA_CH0_CLR_INTR
= IO_STATE(R_DMA_CH0_CLR_INTR
, clr_eop
, do);
584 *R_DMA_CH1_CLR_INTR
= IO_STATE(R_DMA_CH1_CLR_INTR
, clr_eop
, do);
586 /* make sure the rec and transmit error counters are cleared */
588 (void)*R_REC_COUNTERS
; /* dummy read */
589 (void)*R_TR_COUNTERS
; /* dummy read */
591 /* start the receiving DMA channel so we can receive packets from now on */
593 *R_DMA_CH1_FIRST
= virt_to_phys(myNextRxDesc
);
594 *R_DMA_CH1_CMD
= IO_STATE(R_DMA_CH1_CMD
, cmd
, start
);
596 /* Set up transmit DMA channel so it can be restarted later */
598 *R_DMA_CH0_FIRST
= 0;
599 *R_DMA_CH0_DESCR
= virt_to_phys(myLastTxDesc
);
600 netif_start_queue(dev
);
602 local_irq_restore(flags
);
604 /* Probe for transceiver */
605 if (e100_probe_transceiver(dev
))
608 /* Start duplex/speed timers */
609 add_timer(&speed_timer
);
610 add_timer(&duplex_timer
);
612 /* We are now ready to accept transmit requeusts from
613 * the queueing layer of the networking.
615 netif_carrier_on(dev
);
620 cris_free_dma(NETWORK_RX_DMA_NBR
, cardname
);
622 cris_free_dma(NETWORK_TX_DMA_NBR
, cardname
);
624 free_irq(NETWORK_STATUS_IRQ_NBR
, (void *)dev
);
626 free_irq(NETWORK_DMA_TX_IRQ_NBR
, (void *)dev
);
628 free_irq(NETWORK_DMA_RX_IRQ_NBR
, (void *)dev
);
633 #if defined(CONFIG_ETRAX_NO_PHY)
635 dummy_check_speed(struct net_device
* dev
)
641 generic_check_speed(struct net_device
* dev
)
644 struct net_local
*np
= netdev_priv(dev
);
646 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_ADVERTISE
);
647 if ((data
& ADVERTISE_100FULL
) ||
648 (data
& ADVERTISE_100HALF
))
655 tdk_check_speed(struct net_device
* dev
)
658 struct net_local
*np
= netdev_priv(dev
);
660 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
661 MDIO_TDK_DIAGNOSTIC_REG
);
662 current_speed
= (data
& MDIO_TDK_DIAGNOSTIC_RATE
? 100 : 10);
666 broadcom_check_speed(struct net_device
* dev
)
669 struct net_local
*np
= netdev_priv(dev
);
671 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
672 MDIO_AUX_CTRL_STATUS_REG
);
673 current_speed
= (data
& MDIO_BC_SPEED
? 100 : 10);
677 intel_check_speed(struct net_device
* dev
)
680 struct net_local
*np
= netdev_priv(dev
);
682 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
683 MDIO_INT_STATUS_REG_2
);
684 current_speed
= (data
& MDIO_INT_SPEED
? 100 : 10);
688 e100_check_speed(unsigned long priv
)
690 struct net_device
* dev
= (struct net_device
*)priv
;
691 struct net_local
*np
= netdev_priv(dev
);
692 static int led_initiated
= 0;
694 int old_speed
= current_speed
;
696 spin_lock(&np
->transceiver_lock
);
698 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_BMSR
);
699 if (!(data
& BMSR_LSTATUS
)) {
702 transceiver
->check_speed(dev
);
705 spin_lock(&np
->led_lock
);
706 if ((old_speed
!= current_speed
) || !led_initiated
) {
708 e100_set_network_leds(NO_NETWORK_ACTIVITY
);
710 netif_carrier_on(dev
);
712 netif_carrier_off(dev
);
714 spin_unlock(&np
->led_lock
);
716 /* Reinitialize the timer. */
717 speed_timer
.expires
= jiffies
+ NET_LINK_UP_CHECK_INTERVAL
;
718 add_timer(&speed_timer
);
720 spin_unlock(&np
->transceiver_lock
);
724 e100_negotiate(struct net_device
* dev
)
726 struct net_local
*np
= netdev_priv(dev
);
727 unsigned short data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
730 /* Discard old speed and duplex settings */
731 data
&= ~(ADVERTISE_100HALF
| ADVERTISE_100FULL
|
732 ADVERTISE_10HALF
| ADVERTISE_10FULL
);
734 switch (current_speed_selection
) {
736 if (current_duplex
== full
)
737 data
|= ADVERTISE_10FULL
;
738 else if (current_duplex
== half
)
739 data
|= ADVERTISE_10HALF
;
741 data
|= ADVERTISE_10HALF
| ADVERTISE_10FULL
;
745 if (current_duplex
== full
)
746 data
|= ADVERTISE_100FULL
;
747 else if (current_duplex
== half
)
748 data
|= ADVERTISE_100HALF
;
750 data
|= ADVERTISE_100HALF
| ADVERTISE_100FULL
;
754 if (current_duplex
== full
)
755 data
|= ADVERTISE_100FULL
| ADVERTISE_10FULL
;
756 else if (current_duplex
== half
)
757 data
|= ADVERTISE_100HALF
| ADVERTISE_10HALF
;
759 data
|= ADVERTISE_10HALF
| ADVERTISE_10FULL
|
760 ADVERTISE_100HALF
| ADVERTISE_100FULL
;
763 default: /* assume autoneg speed and duplex */
764 data
|= ADVERTISE_10HALF
| ADVERTISE_10FULL
|
765 ADVERTISE_100HALF
| ADVERTISE_100FULL
;
769 e100_set_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_ADVERTISE
, data
);
771 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_BMCR
);
772 if (autoneg_normal
) {
773 /* Renegotiate with link partner */
774 data
|= BMCR_ANENABLE
| BMCR_ANRESTART
;
776 /* Don't negotiate speed or duplex */
777 data
&= ~(BMCR_ANENABLE
| BMCR_ANRESTART
);
779 /* Set speed and duplex static */
780 if (current_speed_selection
== 10)
781 data
&= ~BMCR_SPEED100
;
783 data
|= BMCR_SPEED100
;
785 if (current_duplex
!= full
)
786 data
&= ~BMCR_FULLDPLX
;
788 data
|= BMCR_FULLDPLX
;
790 e100_set_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_BMCR
, data
);
794 e100_set_speed(struct net_device
* dev
, unsigned long speed
)
796 struct net_local
*np
= netdev_priv(dev
);
798 spin_lock(&np
->transceiver_lock
);
799 if (speed
!= current_speed_selection
) {
800 current_speed_selection
= speed
;
803 spin_unlock(&np
->transceiver_lock
);
807 e100_check_duplex(unsigned long priv
)
809 struct net_device
*dev
= (struct net_device
*)priv
;
810 struct net_local
*np
= netdev_priv(dev
);
813 spin_lock(&np
->transceiver_lock
);
814 old_duplex
= full_duplex
;
815 transceiver
->check_duplex(dev
);
816 if (old_duplex
!= full_duplex
) {
818 SETF(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, duplex
, full_duplex
);
819 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
822 /* Reinitialize the timer. */
823 duplex_timer
.expires
= jiffies
+ NET_DUPLEX_CHECK_INTERVAL
;
824 add_timer(&duplex_timer
);
825 np
->mii_if
.full_duplex
= full_duplex
;
826 spin_unlock(&np
->transceiver_lock
);
828 #if defined(CONFIG_ETRAX_NO_PHY)
830 dummy_check_duplex(struct net_device
* dev
)
836 generic_check_duplex(struct net_device
* dev
)
839 struct net_local
*np
= netdev_priv(dev
);
841 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_ADVERTISE
);
842 if ((data
& ADVERTISE_10FULL
) ||
843 (data
& ADVERTISE_100FULL
))
850 tdk_check_duplex(struct net_device
* dev
)
853 struct net_local
*np
= netdev_priv(dev
);
855 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
856 MDIO_TDK_DIAGNOSTIC_REG
);
857 full_duplex
= (data
& MDIO_TDK_DIAGNOSTIC_DPLX
) ? 1 : 0;
861 broadcom_check_duplex(struct net_device
* dev
)
864 struct net_local
*np
= netdev_priv(dev
);
866 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
867 MDIO_AUX_CTRL_STATUS_REG
);
868 full_duplex
= (data
& MDIO_BC_FULL_DUPLEX_IND
) ? 1 : 0;
872 intel_check_duplex(struct net_device
* dev
)
875 struct net_local
*np
= netdev_priv(dev
);
877 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
878 MDIO_INT_STATUS_REG_2
);
879 full_duplex
= (data
& MDIO_INT_FULL_DUPLEX_IND
) ? 1 : 0;
883 e100_set_duplex(struct net_device
* dev
, enum duplex new_duplex
)
885 struct net_local
*np
= netdev_priv(dev
);
887 spin_lock(&np
->transceiver_lock
);
888 if (new_duplex
!= current_duplex
) {
889 current_duplex
= new_duplex
;
892 spin_unlock(&np
->transceiver_lock
);
896 e100_probe_transceiver(struct net_device
* dev
)
900 #if !defined(CONFIG_ETRAX_NO_PHY)
901 unsigned int phyid_high
;
902 unsigned int phyid_low
;
904 struct transceiver_ops
* ops
= NULL
;
905 struct net_local
*np
= netdev_priv(dev
);
907 spin_lock(&np
->transceiver_lock
);
909 /* Probe MDIO physical address */
910 for (np
->mii_if
.phy_id
= 0; np
->mii_if
.phy_id
<= 31;
911 np
->mii_if
.phy_id
++) {
912 if (e100_get_mdio_reg(dev
,
913 np
->mii_if
.phy_id
, MII_BMSR
) != 0xffff)
916 if (np
->mii_if
.phy_id
== 32) {
921 /* Get manufacturer */
922 phyid_high
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_PHYSID1
);
923 phyid_low
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_PHYSID2
);
924 oui
= (phyid_high
<< 6) | (phyid_low
>> 10);
926 for (ops
= &transceivers
[0]; ops
->oui
; ops
++) {
932 spin_unlock(&np
->transceiver_lock
);
938 e100_get_mdio_reg(struct net_device
*dev
, int phy_id
, int location
)
940 unsigned short cmd
; /* Data to be sent on MDIO port */
941 int data
; /* Data read from MDIO */
944 /* Start of frame, OP Code, Physical Address, Register Address */
945 cmd
= (MDIO_START
<< 14) | (MDIO_READ
<< 12) | (phy_id
<< 7) |
948 e100_send_mdio_cmd(cmd
, 0);
953 for (bitCounter
=15; bitCounter
>=0 ; bitCounter
--) {
954 data
|= (e100_receive_mdio_bit() << bitCounter
);
961 e100_set_mdio_reg(struct net_device
*dev
, int phy_id
, int location
, int value
)
966 cmd
= (MDIO_START
<< 14) | (MDIO_WRITE
<< 12) | (phy_id
<< 7) |
969 e100_send_mdio_cmd(cmd
, 1);
972 for (bitCounter
=15; bitCounter
>=0 ; bitCounter
--) {
973 e100_send_mdio_bit(GET_BIT(bitCounter
, value
));
979 e100_send_mdio_cmd(unsigned short cmd
, int write_cmd
)
982 unsigned char data
= 0x2;
985 for (bitCounter
= 31; bitCounter
>= 0; bitCounter
--)
986 e100_send_mdio_bit(GET_BIT(bitCounter
, MDIO_PREAMBLE
));
988 for (bitCounter
= 15; bitCounter
>= 2; bitCounter
--)
989 e100_send_mdio_bit(GET_BIT(bitCounter
, cmd
));
992 for (bitCounter
= 1; bitCounter
>= 0 ; bitCounter
--)
994 e100_send_mdio_bit(GET_BIT(bitCounter
, data
));
996 e100_receive_mdio_bit();
1000 e100_send_mdio_bit(unsigned char bit
)
1002 *R_NETWORK_MGM_CTRL
=
1003 IO_STATE(R_NETWORK_MGM_CTRL
, mdoe
, enable
) |
1004 IO_FIELD(R_NETWORK_MGM_CTRL
, mdio
, bit
);
1006 *R_NETWORK_MGM_CTRL
=
1007 IO_STATE(R_NETWORK_MGM_CTRL
, mdoe
, enable
) |
1008 IO_MASK(R_NETWORK_MGM_CTRL
, mdck
) |
1009 IO_FIELD(R_NETWORK_MGM_CTRL
, mdio
, bit
);
1013 static unsigned char
1014 e100_receive_mdio_bit()
1017 *R_NETWORK_MGM_CTRL
= 0;
1018 bit
= IO_EXTRACT(R_NETWORK_STAT
, mdio
, *R_NETWORK_STAT
);
1020 *R_NETWORK_MGM_CTRL
= IO_MASK(R_NETWORK_MGM_CTRL
, mdck
);
1026 e100_reset_transceiver(struct net_device
* dev
)
1028 struct net_local
*np
= netdev_priv(dev
);
1030 unsigned short data
;
1033 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_BMCR
);
1035 cmd
= (MDIO_START
<< 14) | (MDIO_WRITE
<< 12) | (np
->mii_if
.phy_id
<< 7) | (MII_BMCR
<< 2);
1037 e100_send_mdio_cmd(cmd
, 1);
1041 for (bitCounter
= 15; bitCounter
>= 0 ; bitCounter
--) {
1042 e100_send_mdio_bit(GET_BIT(bitCounter
, data
));
1046 /* Called by upper layers if they decide it took too long to complete
1047 * sending a packet - we need to reset and stuff.
1051 e100_tx_timeout(struct net_device
*dev
)
1053 struct net_local
*np
= netdev_priv(dev
);
1054 unsigned long flags
;
1056 spin_lock_irqsave(&np
->lock
, flags
);
1058 printk(KERN_WARNING
"%s: transmit timed out, %s?\n", dev
->name
,
1059 tx_done(dev
) ? "IRQ problem" : "network cable problem");
1061 /* remember we got an error */
1063 np
->stats
.tx_errors
++;
1065 /* reset the TX DMA in case it has hung on something */
1067 RESET_DMA(NETWORK_TX_DMA_NBR
);
1068 WAIT_DMA(NETWORK_TX_DMA_NBR
);
1070 /* Reset the transceiver. */
1072 e100_reset_transceiver(dev
);
1074 /* and get rid of the packets that never got an interrupt */
1075 while (myFirstTxDesc
!= myNextTxDesc
) {
1076 dev_kfree_skb(myFirstTxDesc
->skb
);
1077 myFirstTxDesc
->skb
= 0;
1078 myFirstTxDesc
= phys_to_virt(myFirstTxDesc
->descr
.next
);
1081 /* Set up transmit DMA channel so it can be restarted later */
1082 *R_DMA_CH0_FIRST
= 0;
1083 *R_DMA_CH0_DESCR
= virt_to_phys(myLastTxDesc
);
1085 /* tell the upper layers we're ok again */
1087 netif_wake_queue(dev
);
1088 spin_unlock_irqrestore(&np
->lock
, flags
);
1092 /* This will only be invoked if the driver is _not_ in XOFF state.
1093 * What this means is that we need not check it, and that this
1094 * invariant will hold if we make sure that the netif_*_queue()
1095 * calls are done at the proper times.
1099 e100_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
1101 struct net_local
*np
= netdev_priv(dev
);
1102 unsigned char *buf
= skb
->data
;
1103 unsigned long flags
;
1106 printk("send packet len %d\n", length
);
1108 spin_lock_irqsave(&np
->lock
, flags
); /* protect from tx_interrupt and ourself */
1110 myNextTxDesc
->skb
= skb
;
1112 dev
->trans_start
= jiffies
;
1114 e100_hardware_send_packet(np
, buf
, skb
->len
);
1116 myNextTxDesc
= phys_to_virt(myNextTxDesc
->descr
.next
);
1118 /* Stop queue if full */
1119 if (myNextTxDesc
== myFirstTxDesc
) {
1120 netif_stop_queue(dev
);
1123 spin_unlock_irqrestore(&np
->lock
, flags
);
1125 return NETDEV_TX_OK
;
1129 * The typical workload of the driver:
1130 * Handle the network interface interrupts.
1134 e100rxtx_interrupt(int irq
, void *dev_id
)
1136 struct net_device
*dev
= (struct net_device
*)dev_id
;
1137 struct net_local
*np
= netdev_priv(dev
);
1138 unsigned long irqbits
;
1141 * Note that both rx and tx interrupts are blocked at this point,
1142 * regardless of which got us here.
1145 irqbits
= *R_IRQ_MASK2_RD
;
1147 /* Handle received packets */
1148 if (irqbits
& IO_STATE(R_IRQ_MASK2_RD
, dma1_eop
, active
)) {
1149 /* acknowledge the eop interrupt */
1151 *R_DMA_CH1_CLR_INTR
= IO_STATE(R_DMA_CH1_CLR_INTR
, clr_eop
, do);
1153 /* check if one or more complete packets were indeed received */
1155 while ((*R_DMA_CH1_FIRST
!= virt_to_phys(myNextRxDesc
)) &&
1156 (myNextRxDesc
!= myLastRxDesc
)) {
1157 /* Take out the buffer and give it to the OS, then
1158 * allocate a new buffer to put a packet in.
1161 np
->stats
.rx_packets
++;
1162 /* restart/continue on the channel, for safety */
1163 *R_DMA_CH1_CMD
= IO_STATE(R_DMA_CH1_CMD
, cmd
, restart
);
1164 /* clear dma channel 1 eop/descr irq bits */
1165 *R_DMA_CH1_CLR_INTR
=
1166 IO_STATE(R_DMA_CH1_CLR_INTR
, clr_eop
, do) |
1167 IO_STATE(R_DMA_CH1_CLR_INTR
, clr_descr
, do);
1169 /* now, we might have gotten another packet
1170 so we have to loop back and check if so */
1174 /* Report any packets that have been sent */
1175 while (virt_to_phys(myFirstTxDesc
) != *R_DMA_CH0_FIRST
&&
1176 (netif_queue_stopped(dev
) || myFirstTxDesc
!= myNextTxDesc
)) {
1177 np
->stats
.tx_bytes
+= myFirstTxDesc
->skb
->len
;
1178 np
->stats
.tx_packets
++;
1180 /* dma is ready with the transmission of the data in tx_skb, so now
1181 we can release the skb memory */
1182 dev_kfree_skb_irq(myFirstTxDesc
->skb
);
1183 myFirstTxDesc
->skb
= 0;
1184 myFirstTxDesc
= phys_to_virt(myFirstTxDesc
->descr
.next
);
1185 /* Wake up queue. */
1186 netif_wake_queue(dev
);
1189 if (irqbits
& IO_STATE(R_IRQ_MASK2_RD
, dma0_eop
, active
)) {
1190 /* acknowledge the eop interrupt. */
1191 *R_DMA_CH0_CLR_INTR
= IO_STATE(R_DMA_CH0_CLR_INTR
, clr_eop
, do);
1198 e100nw_interrupt(int irq
, void *dev_id
)
1200 struct net_device
*dev
= (struct net_device
*)dev_id
;
1201 struct net_local
*np
= netdev_priv(dev
);
1202 unsigned long irqbits
= *R_IRQ_MASK0_RD
;
1204 /* check for underrun irq */
1205 if (irqbits
& IO_STATE(R_IRQ_MASK0_RD
, underrun
, active
)) {
1206 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, clr
);
1207 *R_NETWORK_TR_CTRL
= network_tr_ctrl_shadow
;
1208 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, nop
);
1209 np
->stats
.tx_errors
++;
1210 D(printk("ethernet receiver underrun!\n"));
1213 /* check for overrun irq */
1214 if (irqbits
& IO_STATE(R_IRQ_MASK0_RD
, overrun
, active
)) {
1215 update_rx_stats(&np
->stats
); /* this will ack the irq */
1216 D(printk("ethernet receiver overrun!\n"));
1218 /* check for excessive collision irq */
1219 if (irqbits
& IO_STATE(R_IRQ_MASK0_RD
, excessive_col
, active
)) {
1220 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, clr
);
1221 *R_NETWORK_TR_CTRL
= network_tr_ctrl_shadow
;
1222 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, nop
);
1223 np
->stats
.tx_errors
++;
1224 D(printk("ethernet excessive collisions!\n"));
1229 /* We have a good packet(s), get it/them out of the buffers. */
1231 e100_rx(struct net_device
*dev
)
1233 struct sk_buff
*skb
;
1235 struct net_local
*np
= netdev_priv(dev
);
1236 unsigned char *skb_data_ptr
;
1240 etrax_eth_descr
*prevRxDesc
; /* The descriptor right before myNextRxDesc */
1241 spin_lock(&np
->led_lock
);
1242 if (!led_active
&& time_after(jiffies
, led_next_time
)) {
1243 /* light the network leds depending on the current speed. */
1244 e100_set_network_leds(NETWORK_ACTIVITY
);
1246 /* Set the earliest time we may clear the LED */
1247 led_next_time
= jiffies
+ NET_FLASH_TIME
;
1249 mod_timer(&clear_led_timer
, jiffies
+ HZ
/10);
1251 spin_unlock(&np
->led_lock
);
1253 length
= myNextRxDesc
->descr
.hw_len
- 4;
1254 np
->stats
.rx_bytes
+= length
;
1257 printk("Got a packet of length %d:\n", length
);
1258 /* dump the first bytes in the packet */
1259 skb_data_ptr
= (unsigned char *)phys_to_virt(myNextRxDesc
->descr
.buf
);
1260 for (i
= 0; i
< 8; i
++) {
1261 printk("%d: %.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x\n", i
* 8,
1262 skb_data_ptr
[0],skb_data_ptr
[1],skb_data_ptr
[2],skb_data_ptr
[3],
1263 skb_data_ptr
[4],skb_data_ptr
[5],skb_data_ptr
[6],skb_data_ptr
[7]);
1268 if (length
< RX_COPYBREAK
) {
1269 /* Small packet, copy data */
1270 skb
= dev_alloc_skb(length
- ETHER_HEAD_LEN
);
1272 np
->stats
.rx_errors
++;
1273 printk(KERN_NOTICE
"%s: Memory squeeze, dropping packet.\n", dev
->name
);
1274 goto update_nextrxdesc
;
1277 skb_put(skb
, length
- ETHER_HEAD_LEN
); /* allocate room for the packet body */
1278 skb_data_ptr
= skb_push(skb
, ETHER_HEAD_LEN
); /* allocate room for the header */
1281 printk("head = 0x%x, data = 0x%x, tail = 0x%x, end = 0x%x\n",
1282 skb
->head
, skb
->data
, skb_tail_pointer(skb
),
1283 skb_end_pointer(skb
));
1284 printk("copying packet to 0x%x.\n", skb_data_ptr
);
1287 memcpy(skb_data_ptr
, phys_to_virt(myNextRxDesc
->descr
.buf
), length
);
1290 /* Large packet, send directly to upper layers and allocate new
1291 * memory (aligned to cache line boundary to avoid bug).
1292 * Before sending the skb to upper layers we must make sure
1293 * that skb->data points to the aligned start of the packet.
1296 struct sk_buff
*new_skb
= dev_alloc_skb(MAX_MEDIA_DATA_SIZE
+ 2 * L1_CACHE_BYTES
);
1298 np
->stats
.rx_errors
++;
1299 printk(KERN_NOTICE
"%s: Memory squeeze, dropping packet.\n", dev
->name
);
1300 goto update_nextrxdesc
;
1302 skb
= myNextRxDesc
->skb
;
1303 align
= (int)phys_to_virt(myNextRxDesc
->descr
.buf
) - (int)skb
->data
;
1304 skb_put(skb
, length
+ align
);
1305 skb_pull(skb
, align
); /* Remove alignment bytes */
1306 myNextRxDesc
->skb
= new_skb
;
1307 myNextRxDesc
->descr
.buf
= L1_CACHE_ALIGN(virt_to_phys(myNextRxDesc
->skb
->data
));
1310 skb
->protocol
= eth_type_trans(skb
, dev
);
1312 /* Send the packet to the upper layers */
1316 /* Prepare for next packet */
1317 myNextRxDesc
->descr
.status
= 0;
1318 prevRxDesc
= myNextRxDesc
;
1319 myNextRxDesc
= phys_to_virt(myNextRxDesc
->descr
.next
);
1323 /* Check if descriptors should be returned */
1324 if (rx_queue_len
== RX_QUEUE_THRESHOLD
) {
1325 flush_etrax_cache();
1326 prevRxDesc
->descr
.ctrl
|= d_eol
;
1327 myLastRxDesc
->descr
.ctrl
&= ~d_eol
;
1328 myLastRxDesc
= prevRxDesc
;
1333 /* The inverse routine to net_open(). */
1335 e100_close(struct net_device
*dev
)
1337 struct net_local
*np
= netdev_priv(dev
);
1339 printk(KERN_INFO
"Closing %s.\n", dev
->name
);
1341 netif_stop_queue(dev
);
1344 IO_STATE(R_IRQ_MASK0_CLR
, overrun
, clr
) |
1345 IO_STATE(R_IRQ_MASK0_CLR
, underrun
, clr
) |
1346 IO_STATE(R_IRQ_MASK0_CLR
, excessive_col
, clr
);
1349 IO_STATE(R_IRQ_MASK2_CLR
, dma0_descr
, clr
) |
1350 IO_STATE(R_IRQ_MASK2_CLR
, dma0_eop
, clr
) |
1351 IO_STATE(R_IRQ_MASK2_CLR
, dma1_descr
, clr
) |
1352 IO_STATE(R_IRQ_MASK2_CLR
, dma1_eop
, clr
);
1354 /* Stop the receiver and the transmitter */
1356 RESET_DMA(NETWORK_TX_DMA_NBR
);
1357 RESET_DMA(NETWORK_RX_DMA_NBR
);
1359 /* Flush the Tx and disable Rx here. */
1361 free_irq(NETWORK_DMA_RX_IRQ_NBR
, (void *)dev
);
1362 free_irq(NETWORK_DMA_TX_IRQ_NBR
, (void *)dev
);
1363 free_irq(NETWORK_STATUS_IRQ_NBR
, (void *)dev
);
1365 cris_free_dma(NETWORK_TX_DMA_NBR
, cardname
);
1366 cris_free_dma(NETWORK_RX_DMA_NBR
, cardname
);
1368 /* Update the statistics here. */
1370 update_rx_stats(&np
->stats
);
1371 update_tx_stats(&np
->stats
);
1373 /* Stop speed/duplex timers */
1374 del_timer(&speed_timer
);
1375 del_timer(&duplex_timer
);
1381 e100_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
1383 struct mii_ioctl_data
*data
= if_mii(ifr
);
1384 struct net_local
*np
= netdev_priv(dev
);
1388 spin_lock(&np
->lock
); /* Preempt protection */
1390 /* The ioctls below should be considered obsolete but are */
1391 /* still present for compatability with old scripts/apps */
1392 case SET_ETH_SPEED_10
: /* 10 Mbps */
1393 e100_set_speed(dev
, 10);
1395 case SET_ETH_SPEED_100
: /* 100 Mbps */
1396 e100_set_speed(dev
, 100);
1398 case SET_ETH_SPEED_AUTO
: /* Auto-negotiate speed */
1399 e100_set_speed(dev
, 0);
1401 case SET_ETH_DUPLEX_HALF
: /* Half duplex */
1402 e100_set_duplex(dev
, half
);
1404 case SET_ETH_DUPLEX_FULL
: /* Full duplex */
1405 e100_set_duplex(dev
, full
);
1407 case SET_ETH_DUPLEX_AUTO
: /* Auto-negotiate duplex */
1408 e100_set_duplex(dev
, autoneg
);
1410 case SET_ETH_AUTONEG
:
1411 old_autoneg
= autoneg_normal
;
1412 autoneg_normal
= *(int*)data
;
1413 if (autoneg_normal
!= old_autoneg
)
1414 e100_negotiate(dev
);
1417 rc
= generic_mii_ioctl(&np
->mii_if
, if_mii(ifr
),
1421 spin_unlock(&np
->lock
);
1425 static int e100_get_settings(struct net_device
*dev
,
1426 struct ethtool_cmd
*cmd
)
1428 struct net_local
*np
= netdev_priv(dev
);
1431 spin_lock_irq(&np
->lock
);
1432 err
= mii_ethtool_gset(&np
->mii_if
, cmd
);
1433 spin_unlock_irq(&np
->lock
);
1435 /* The PHY may support 1000baseT, but the Etrax100 does not. */
1436 cmd
->supported
&= ~(SUPPORTED_1000baseT_Half
1437 | SUPPORTED_1000baseT_Full
);
1441 static int e100_set_settings(struct net_device
*dev
,
1442 struct ethtool_cmd
*ecmd
)
1444 if (ecmd
->autoneg
== AUTONEG_ENABLE
) {
1445 e100_set_duplex(dev
, autoneg
);
1446 e100_set_speed(dev
, 0);
1448 e100_set_duplex(dev
, ecmd
->duplex
== DUPLEX_HALF
? half
: full
);
1449 e100_set_speed(dev
, ecmd
->speed
== SPEED_10
? 10: 100);
1455 static void e100_get_drvinfo(struct net_device
*dev
,
1456 struct ethtool_drvinfo
*info
)
1458 strncpy(info
->driver
, "ETRAX 100LX", sizeof(info
->driver
) - 1);
1459 strncpy(info
->version
, "$Revision: 1.31 $", sizeof(info
->version
) - 1);
1460 strncpy(info
->fw_version
, "N/A", sizeof(info
->fw_version
) - 1);
1461 strncpy(info
->bus_info
, "N/A", sizeof(info
->bus_info
) - 1);
1464 static int e100_nway_reset(struct net_device
*dev
)
1466 if (current_duplex
== autoneg
&& current_speed_selection
== 0)
1467 e100_negotiate(dev
);
1471 static const struct ethtool_ops e100_ethtool_ops
= {
1472 .get_settings
= e100_get_settings
,
1473 .set_settings
= e100_set_settings
,
1474 .get_drvinfo
= e100_get_drvinfo
,
1475 .nway_reset
= e100_nway_reset
,
1476 .get_link
= ethtool_op_get_link
,
1480 e100_set_config(struct net_device
*dev
, struct ifmap
*map
)
1482 struct net_local
*np
= netdev_priv(dev
);
1484 spin_lock(&np
->lock
); /* Preempt protection */
1487 case IF_PORT_UNKNOWN
:
1489 e100_set_speed(dev
, 0);
1490 e100_set_duplex(dev
, autoneg
);
1492 case IF_PORT_10BASET
:
1493 e100_set_speed(dev
, 10);
1494 e100_set_duplex(dev
, autoneg
);
1496 case IF_PORT_100BASET
:
1497 case IF_PORT_100BASETX
:
1498 e100_set_speed(dev
, 100);
1499 e100_set_duplex(dev
, autoneg
);
1501 case IF_PORT_100BASEFX
:
1502 case IF_PORT_10BASE2
:
1504 spin_unlock(&np
->lock
);
1508 printk(KERN_ERR
"%s: Invalid media selected", dev
->name
);
1509 spin_unlock(&np
->lock
);
1512 spin_unlock(&np
->lock
);
1517 update_rx_stats(struct net_device_stats
*es
)
1519 unsigned long r
= *R_REC_COUNTERS
;
1520 /* update stats relevant to reception errors */
1521 es
->rx_fifo_errors
+= IO_EXTRACT(R_REC_COUNTERS
, congestion
, r
);
1522 es
->rx_crc_errors
+= IO_EXTRACT(R_REC_COUNTERS
, crc_error
, r
);
1523 es
->rx_frame_errors
+= IO_EXTRACT(R_REC_COUNTERS
, alignment_error
, r
);
1524 es
->rx_length_errors
+= IO_EXTRACT(R_REC_COUNTERS
, oversize
, r
);
1528 update_tx_stats(struct net_device_stats
*es
)
1530 unsigned long r
= *R_TR_COUNTERS
;
1531 /* update stats relevant to transmission errors */
1533 IO_EXTRACT(R_TR_COUNTERS
, single_col
, r
) +
1534 IO_EXTRACT(R_TR_COUNTERS
, multiple_col
, r
);
1538 * Get the current statistics.
1539 * This may be called with the card open or closed.
1541 static struct net_device_stats
*
1542 e100_get_stats(struct net_device
*dev
)
1544 struct net_local
*lp
= netdev_priv(dev
);
1545 unsigned long flags
;
1547 spin_lock_irqsave(&lp
->lock
, flags
);
1549 update_rx_stats(&lp
->stats
);
1550 update_tx_stats(&lp
->stats
);
1552 spin_unlock_irqrestore(&lp
->lock
, flags
);
1557 * Set or clear the multicast filter for this adaptor.
1558 * num_addrs == -1 Promiscuous mode, receive all packets
1559 * num_addrs == 0 Normal mode, clear multicast list
1560 * num_addrs > 0 Multicast mode, receive normal and MC packets,
1561 * and do best-effort filtering.
1564 set_multicast_list(struct net_device
*dev
)
1566 struct net_local
*lp
= netdev_priv(dev
);
1567 int num_addr
= netdev_mc_count(dev
);
1568 unsigned long int lo_bits
;
1569 unsigned long int hi_bits
;
1571 spin_lock(&lp
->lock
);
1572 if (dev
->flags
& IFF_PROMISC
) {
1573 /* promiscuous mode */
1574 lo_bits
= 0xfffffffful
;
1575 hi_bits
= 0xfffffffful
;
1577 /* Enable individual receive */
1578 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, individual
, receive
);
1579 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
1580 } else if (dev
->flags
& IFF_ALLMULTI
) {
1581 /* enable all multicasts */
1582 lo_bits
= 0xfffffffful
;
1583 hi_bits
= 0xfffffffful
;
1585 /* Disable individual receive */
1586 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, individual
, discard
);
1587 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
1588 } else if (num_addr
== 0) {
1589 /* Normal, clear the mc list */
1590 lo_bits
= 0x00000000ul
;
1591 hi_bits
= 0x00000000ul
;
1593 /* Disable individual receive */
1594 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, individual
, discard
);
1595 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
1597 /* MC mode, receive normal and MC packets */
1599 struct dev_mc_list
*dmi
= dev
->mc_list
;
1603 lo_bits
= 0x00000000ul
;
1604 hi_bits
= 0x00000000ul
;
1605 for (i
= 0; i
< num_addr
; i
++) {
1606 /* Calculate the hash index for the GA registers */
1609 baddr
= dmi
->dmi_addr
;
1610 hash_ix
^= (*baddr
) & 0x3f;
1611 hash_ix
^= ((*baddr
) >> 6) & 0x03;
1613 hash_ix
^= ((*baddr
) << 2) & 0x03c;
1614 hash_ix
^= ((*baddr
) >> 4) & 0xf;
1616 hash_ix
^= ((*baddr
) << 4) & 0x30;
1617 hash_ix
^= ((*baddr
) >> 2) & 0x3f;
1619 hash_ix
^= (*baddr
) & 0x3f;
1620 hash_ix
^= ((*baddr
) >> 6) & 0x03;
1622 hash_ix
^= ((*baddr
) << 2) & 0x03c;
1623 hash_ix
^= ((*baddr
) >> 4) & 0xf;
1625 hash_ix
^= ((*baddr
) << 4) & 0x30;
1626 hash_ix
^= ((*baddr
) >> 2) & 0x3f;
1630 if (hash_ix
>= 32) {
1631 hi_bits
|= (1 << (hash_ix
-32));
1633 lo_bits
|= (1 << hash_ix
);
1637 /* Disable individual receive */
1638 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, individual
, discard
);
1639 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
1641 *R_NETWORK_GA_0
= lo_bits
;
1642 *R_NETWORK_GA_1
= hi_bits
;
1643 spin_unlock(&lp
->lock
);
1647 e100_hardware_send_packet(struct net_local
*np
, char *buf
, int length
)
1649 D(printk("e100 send pack, buf 0x%x len %d\n", buf
, length
));
1651 spin_lock(&np
->led_lock
);
1652 if (!led_active
&& time_after(jiffies
, led_next_time
)) {
1653 /* light the network leds depending on the current speed. */
1654 e100_set_network_leds(NETWORK_ACTIVITY
);
1656 /* Set the earliest time we may clear the LED */
1657 led_next_time
= jiffies
+ NET_FLASH_TIME
;
1659 mod_timer(&clear_led_timer
, jiffies
+ HZ
/10);
1661 spin_unlock(&np
->led_lock
);
1663 /* configure the tx dma descriptor */
1664 myNextTxDesc
->descr
.sw_len
= length
;
1665 myNextTxDesc
->descr
.ctrl
= d_eop
| d_eol
| d_wait
;
1666 myNextTxDesc
->descr
.buf
= virt_to_phys(buf
);
1668 /* Move end of list */
1669 myLastTxDesc
->descr
.ctrl
&= ~d_eol
;
1670 myLastTxDesc
= myNextTxDesc
;
1672 /* Restart DMA channel */
1673 *R_DMA_CH0_CMD
= IO_STATE(R_DMA_CH0_CMD
, cmd
, restart
);
1677 e100_clear_network_leds(unsigned long dummy
)
1679 struct net_device
*dev
= (struct net_device
*)dummy
;
1680 struct net_local
*np
= netdev_priv(dev
);
1682 spin_lock(&np
->led_lock
);
1684 if (led_active
&& time_after(jiffies
, led_next_time
)) {
1685 e100_set_network_leds(NO_NETWORK_ACTIVITY
);
1687 /* Set the earliest time we may set the LED */
1688 led_next_time
= jiffies
+ NET_FLASH_PAUSE
;
1692 spin_unlock(&np
->led_lock
);
1696 e100_set_network_leds(int active
)
1698 #if defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK)
1699 int light_leds
= (active
== NO_NETWORK_ACTIVITY
);
1700 #elif defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY)
1701 int light_leds
= (active
== NETWORK_ACTIVITY
);
1703 #error "Define either CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK or CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY"
1706 if (!current_speed
) {
1707 /* Make LED red, link is down */
1708 #if defined(CONFIG_ETRAX_NETWORK_RED_ON_NO_CONNECTION)
1709 CRIS_LED_NETWORK_SET(CRIS_LED_RED
);
1711 CRIS_LED_NETWORK_SET(CRIS_LED_OFF
);
1713 } else if (light_leds
) {
1714 if (current_speed
== 10) {
1715 CRIS_LED_NETWORK_SET(CRIS_LED_ORANGE
);
1717 CRIS_LED_NETWORK_SET(CRIS_LED_GREEN
);
1720 CRIS_LED_NETWORK_SET(CRIS_LED_OFF
);
1724 #ifdef CONFIG_NET_POLL_CONTROLLER
1726 e100_netpoll(struct net_device
* netdev
)
1728 e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR
, netdev
, NULL
);
1733 etrax_init_module(void)
1735 return etrax_ethernet_init();
1739 e100_boot_setup(char* str
)
1741 struct sockaddr sa
= {0};
1744 /* Parse the colon separated Ethernet station address */
1745 for (i
= 0; i
< ETH_ALEN
; i
++) {
1747 if (sscanf(str
+ 3*i
, "%2x", &tmp
) != 1) {
1748 printk(KERN_WARNING
"Malformed station address");
1751 sa
.sa_data
[i
] = (char)tmp
;
1758 __setup("etrax100_eth=", e100_boot_setup
);
1760 module_init(etrax_init_module
);