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[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / amd / 7990.c
1 /*
2 * 7990.c -- LANCE ethernet IC generic routines.
3 * This is an attempt to separate out the bits of various ethernet
4 * drivers that are common because they all use the AMD 7990 LANCE
5 * (Local Area Network Controller for Ethernet) chip.
6 *
7 * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
8 *
9 * Most of this stuff was obtained by looking at other LANCE drivers,
10 * in particular a2065.[ch]. The AMD C-LANCE datasheet was also helpful.
11 * NB: this was made easy by the fact that Jes Sorensen had cleaned up
12 * most of a2025 and sunlance with the aim of merging them, so the
13 * common code was pretty obvious.
14 */
15 #include <linux/crc32.h>
16 #include <linux/delay.h>
17 #include <linux/errno.h>
18 #include <linux/netdevice.h>
19 #include <linux/etherdevice.h>
20 #include <linux/init.h>
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/types.h>
24 #include <linux/fcntl.h>
25 #include <linux/interrupt.h>
26 #include <linux/ioport.h>
27 #include <linux/in.h>
28 #include <linux/route.h>
29 #include <linux/string.h>
30 #include <linux/skbuff.h>
31 #include <asm/irq.h>
32 /* Used for the temporal inet entries and routing */
33 #include <linux/socket.h>
34 #include <linux/bitops.h>
35
36 #include <asm/io.h>
37 #include <asm/dma.h>
38 #include <asm/pgtable.h>
39 #ifdef CONFIG_HP300
40 #include <asm/blinken.h>
41 #endif
42
43 #include "7990.h"
44
45 #define WRITERAP(lp,x) out_be16(lp->base + LANCE_RAP, (x))
46 #define WRITERDP(lp,x) out_be16(lp->base + LANCE_RDP, (x))
47 #define READRDP(lp) in_be16(lp->base + LANCE_RDP)
48
49 #if defined(CONFIG_HPLANCE) || defined(CONFIG_HPLANCE_MODULE)
50 #include "hplance.h"
51
52 #undef WRITERAP
53 #undef WRITERDP
54 #undef READRDP
55
56 #if defined(CONFIG_MVME147_NET) || defined(CONFIG_MVME147_NET_MODULE)
57
58 /* Lossage Factor Nine, Mr Sulu. */
59 #define WRITERAP(lp,x) (lp->writerap(lp,x))
60 #define WRITERDP(lp,x) (lp->writerdp(lp,x))
61 #define READRDP(lp) (lp->readrdp(lp))
62
63 #else
64
65 /* These inlines can be used if only CONFIG_HPLANCE is defined */
66 static inline void WRITERAP(struct lance_private *lp, __u16 value)
67 {
68 do {
69 out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value);
70 } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
71 }
72
73 static inline void WRITERDP(struct lance_private *lp, __u16 value)
74 {
75 do {
76 out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value);
77 } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
78 }
79
80 static inline __u16 READRDP(struct lance_private *lp)
81 {
82 __u16 value;
83 do {
84 value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP);
85 } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
86 return value;
87 }
88
89 #endif
90 #endif /* CONFIG_HPLANCE || CONFIG_HPLANCE_MODULE */
91
92 /* debugging output macros, various flavours */
93 /* #define TEST_HITS */
94 #ifdef UNDEF
95 #define PRINT_RINGS() \
96 do { \
97 int t; \
98 for (t=0; t < RX_RING_SIZE; t++) { \
99 printk("R%d: @(%02X %04X) len %04X, mblen %04X, bits %02X\n",\
100 t, ib->brx_ring[t].rmd1_hadr, ib->brx_ring[t].rmd0,\
101 ib->brx_ring[t].length,\
102 ib->brx_ring[t].mblength, ib->brx_ring[t].rmd1_bits);\
103 }\
104 for (t=0; t < TX_RING_SIZE; t++) { \
105 printk("T%d: @(%02X %04X) len %04X, misc %04X, bits %02X\n",\
106 t, ib->btx_ring[t].tmd1_hadr, ib->btx_ring[t].tmd0,\
107 ib->btx_ring[t].length,\
108 ib->btx_ring[t].misc, ib->btx_ring[t].tmd1_bits);\
109 }\
110 } while (0)
111 #else
112 #define PRINT_RINGS()
113 #endif
114
115 /* Load the CSR registers. The LANCE has to be STOPped when we do this! */
116 static void load_csrs (struct lance_private *lp)
117 {
118 volatile struct lance_init_block *aib = lp->lance_init_block;
119 int leptr;
120
121 leptr = LANCE_ADDR (aib);
122
123 WRITERAP(lp, LE_CSR1); /* load address of init block */
124 WRITERDP(lp, leptr & 0xFFFF);
125 WRITERAP(lp, LE_CSR2);
126 WRITERDP(lp, leptr >> 16);
127 WRITERAP(lp, LE_CSR3);
128 WRITERDP(lp, lp->busmaster_regval); /* set byteswap/ALEctrl/byte ctrl */
129
130 /* Point back to csr0 */
131 WRITERAP(lp, LE_CSR0);
132 }
133
134 /* #define to 0 or 1 appropriately */
135 #define DEBUG_IRING 0
136 /* Set up the Lance Rx and Tx rings and the init block */
137 static void lance_init_ring (struct net_device *dev)
138 {
139 struct lance_private *lp = netdev_priv(dev);
140 volatile struct lance_init_block *ib = lp->init_block;
141 volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */
142 int leptr;
143 int i;
144
145 aib = lp->lance_init_block;
146
147 lp->rx_new = lp->tx_new = 0;
148 lp->rx_old = lp->tx_old = 0;
149
150 ib->mode = LE_MO_PROM; /* normal, enable Tx & Rx */
151
152 /* Copy the ethernet address to the lance init block
153 * Notice that we do a byteswap if we're big endian.
154 * [I think this is the right criterion; at least, sunlance,
155 * a2065 and atarilance do the byteswap and lance.c (PC) doesn't.
156 * However, the datasheet says that the BSWAP bit doesn't affect
157 * the init block, so surely it should be low byte first for
158 * everybody? Um.]
159 * We could define the ib->physaddr as three 16bit values and
160 * use (addr[1] << 8) | addr[0] & co, but this is more efficient.
161 */
162 #ifdef __BIG_ENDIAN
163 ib->phys_addr [0] = dev->dev_addr [1];
164 ib->phys_addr [1] = dev->dev_addr [0];
165 ib->phys_addr [2] = dev->dev_addr [3];
166 ib->phys_addr [3] = dev->dev_addr [2];
167 ib->phys_addr [4] = dev->dev_addr [5];
168 ib->phys_addr [5] = dev->dev_addr [4];
169 #else
170 for (i=0; i<6; i++)
171 ib->phys_addr[i] = dev->dev_addr[i];
172 #endif
173
174 if (DEBUG_IRING)
175 printk ("TX rings:\n");
176
177 lp->tx_full = 0;
178 /* Setup the Tx ring entries */
179 for (i = 0; i < (1<<lp->lance_log_tx_bufs); i++) {
180 leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
181 ib->btx_ring [i].tmd0 = leptr;
182 ib->btx_ring [i].tmd1_hadr = leptr >> 16;
183 ib->btx_ring [i].tmd1_bits = 0;
184 ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */
185 ib->btx_ring [i].misc = 0;
186 if (DEBUG_IRING)
187 printk ("%d: 0x%8.8x\n", i, leptr);
188 }
189
190 /* Setup the Rx ring entries */
191 if (DEBUG_IRING)
192 printk ("RX rings:\n");
193 for (i = 0; i < (1<<lp->lance_log_rx_bufs); i++) {
194 leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
195
196 ib->brx_ring [i].rmd0 = leptr;
197 ib->brx_ring [i].rmd1_hadr = leptr >> 16;
198 ib->brx_ring [i].rmd1_bits = LE_R1_OWN;
199 /* 0xf000 == bits that must be one (reserved, presumably) */
200 ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000;
201 ib->brx_ring [i].mblength = 0;
202 if (DEBUG_IRING)
203 printk ("%d: 0x%8.8x\n", i, leptr);
204 }
205
206 /* Setup the initialization block */
207
208 /* Setup rx descriptor pointer */
209 leptr = LANCE_ADDR(&aib->brx_ring);
210 ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
211 ib->rx_ptr = leptr;
212 if (DEBUG_IRING)
213 printk ("RX ptr: %8.8x\n", leptr);
214
215 /* Setup tx descriptor pointer */
216 leptr = LANCE_ADDR(&aib->btx_ring);
217 ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
218 ib->tx_ptr = leptr;
219 if (DEBUG_IRING)
220 printk ("TX ptr: %8.8x\n", leptr);
221
222 /* Clear the multicast filter */
223 ib->filter [0] = 0;
224 ib->filter [1] = 0;
225 PRINT_RINGS();
226 }
227
228 /* LANCE must be STOPped before we do this, too... */
229 static int init_restart_lance (struct lance_private *lp)
230 {
231 int i;
232
233 WRITERAP(lp, LE_CSR0);
234 WRITERDP(lp, LE_C0_INIT);
235
236 /* Need a hook here for sunlance ledma stuff */
237
238 /* Wait for the lance to complete initialization */
239 for (i = 0; (i < 100) && !(READRDP(lp) & (LE_C0_ERR | LE_C0_IDON)); i++)
240 barrier();
241 if ((i == 100) || (READRDP(lp) & LE_C0_ERR)) {
242 printk ("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, READRDP(lp));
243 return -1;
244 }
245
246 /* Clear IDON by writing a "1", enable interrupts and start lance */
247 WRITERDP(lp, LE_C0_IDON);
248 WRITERDP(lp, LE_C0_INEA | LE_C0_STRT);
249
250 return 0;
251 }
252
253 static int lance_reset (struct net_device *dev)
254 {
255 struct lance_private *lp = netdev_priv(dev);
256 int status;
257
258 /* Stop the lance */
259 WRITERAP(lp, LE_CSR0);
260 WRITERDP(lp, LE_C0_STOP);
261
262 load_csrs (lp);
263 lance_init_ring (dev);
264 dev->trans_start = jiffies; /* prevent tx timeout */
265 status = init_restart_lance (lp);
266 #ifdef DEBUG_DRIVER
267 printk ("Lance restart=%d\n", status);
268 #endif
269 return status;
270 }
271
272 static int lance_rx (struct net_device *dev)
273 {
274 struct lance_private *lp = netdev_priv(dev);
275 volatile struct lance_init_block *ib = lp->init_block;
276 volatile struct lance_rx_desc *rd;
277 unsigned char bits;
278 #ifdef TEST_HITS
279 int i;
280 #endif
281
282 #ifdef TEST_HITS
283 printk ("[");
284 for (i = 0; i < RX_RING_SIZE; i++) {
285 if (i == lp->rx_new)
286 printk ("%s",
287 ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "_" : "X");
288 else
289 printk ("%s",
290 ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "." : "1");
291 }
292 printk ("]");
293 #endif
294 #ifdef CONFIG_HP300
295 blinken_leds(0x40, 0);
296 #endif
297 WRITERDP(lp, LE_C0_RINT | LE_C0_INEA); /* ack Rx int, reenable ints */
298 for (rd = &ib->brx_ring [lp->rx_new]; /* For each Rx ring we own... */
299 !((bits = rd->rmd1_bits) & LE_R1_OWN);
300 rd = &ib->brx_ring [lp->rx_new]) {
301
302 /* We got an incomplete frame? */
303 if ((bits & LE_R1_POK) != LE_R1_POK) {
304 dev->stats.rx_over_errors++;
305 dev->stats.rx_errors++;
306 continue;
307 } else if (bits & LE_R1_ERR) {
308 /* Count only the end frame as a rx error,
309 * not the beginning
310 */
311 if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++;
312 if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++;
313 if (bits & LE_R1_OFL) dev->stats.rx_over_errors++;
314 if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++;
315 if (bits & LE_R1_EOP) dev->stats.rx_errors++;
316 } else {
317 int len = (rd->mblength & 0xfff) - 4;
318 struct sk_buff *skb = netdev_alloc_skb(dev, len + 2);
319
320 if (!skb) {
321 dev->stats.rx_dropped++;
322 rd->mblength = 0;
323 rd->rmd1_bits = LE_R1_OWN;
324 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
325 return 0;
326 }
327
328 skb_reserve (skb, 2); /* 16 byte align */
329 skb_put (skb, len); /* make room */
330 skb_copy_to_linear_data(skb,
331 (unsigned char *)&(ib->rx_buf [lp->rx_new][0]),
332 len);
333 skb->protocol = eth_type_trans (skb, dev);
334 netif_rx (skb);
335 dev->stats.rx_packets++;
336 dev->stats.rx_bytes += len;
337 }
338
339 /* Return the packet to the pool */
340 rd->mblength = 0;
341 rd->rmd1_bits = LE_R1_OWN;
342 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
343 }
344 return 0;
345 }
346
347 static int lance_tx (struct net_device *dev)
348 {
349 struct lance_private *lp = netdev_priv(dev);
350 volatile struct lance_init_block *ib = lp->init_block;
351 volatile struct lance_tx_desc *td;
352 int i, j;
353 int status;
354
355 #ifdef CONFIG_HP300
356 blinken_leds(0x80, 0);
357 #endif
358 /* csr0 is 2f3 */
359 WRITERDP(lp, LE_C0_TINT | LE_C0_INEA);
360 /* csr0 is 73 */
361
362 j = lp->tx_old;
363 for (i = j; i != lp->tx_new; i = j) {
364 td = &ib->btx_ring [i];
365
366 /* If we hit a packet not owned by us, stop */
367 if (td->tmd1_bits & LE_T1_OWN)
368 break;
369
370 if (td->tmd1_bits & LE_T1_ERR) {
371 status = td->misc;
372
373 dev->stats.tx_errors++;
374 if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++;
375 if (status & LE_T3_LCOL) dev->stats.tx_window_errors++;
376
377 if (status & LE_T3_CLOS) {
378 dev->stats.tx_carrier_errors++;
379 if (lp->auto_select) {
380 lp->tpe = 1 - lp->tpe;
381 printk("%s: Carrier Lost, trying %s\n",
382 dev->name, lp->tpe?"TPE":"AUI");
383 /* Stop the lance */
384 WRITERAP(lp, LE_CSR0);
385 WRITERDP(lp, LE_C0_STOP);
386 lance_init_ring (dev);
387 load_csrs (lp);
388 init_restart_lance (lp);
389 return 0;
390 }
391 }
392
393 /* buffer errors and underflows turn off the transmitter */
394 /* Restart the adapter */
395 if (status & (LE_T3_BUF|LE_T3_UFL)) {
396 dev->stats.tx_fifo_errors++;
397
398 printk ("%s: Tx: ERR_BUF|ERR_UFL, restarting\n",
399 dev->name);
400 /* Stop the lance */
401 WRITERAP(lp, LE_CSR0);
402 WRITERDP(lp, LE_C0_STOP);
403 lance_init_ring (dev);
404 load_csrs (lp);
405 init_restart_lance (lp);
406 return 0;
407 }
408 } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
409 /*
410 * So we don't count the packet more than once.
411 */
412 td->tmd1_bits &= ~(LE_T1_POK);
413
414 /* One collision before packet was sent. */
415 if (td->tmd1_bits & LE_T1_EONE)
416 dev->stats.collisions++;
417
418 /* More than one collision, be optimistic. */
419 if (td->tmd1_bits & LE_T1_EMORE)
420 dev->stats.collisions += 2;
421
422 dev->stats.tx_packets++;
423 }
424
425 j = (j + 1) & lp->tx_ring_mod_mask;
426 }
427 lp->tx_old = j;
428 WRITERDP(lp, LE_C0_TINT | LE_C0_INEA);
429 return 0;
430 }
431
432 static irqreturn_t
433 lance_interrupt (int irq, void *dev_id)
434 {
435 struct net_device *dev = (struct net_device *)dev_id;
436 struct lance_private *lp = netdev_priv(dev);
437 int csr0;
438
439 spin_lock (&lp->devlock);
440
441 WRITERAP(lp, LE_CSR0); /* LANCE Controller Status */
442 csr0 = READRDP(lp);
443
444 PRINT_RINGS();
445
446 if (!(csr0 & LE_C0_INTR)) { /* Check if any interrupt has */
447 spin_unlock (&lp->devlock);
448 return IRQ_NONE; /* been generated by the Lance. */
449 }
450
451 /* Acknowledge all the interrupt sources ASAP */
452 WRITERDP(lp, csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|LE_C0_INIT));
453
454 if ((csr0 & LE_C0_ERR)) {
455 /* Clear the error condition */
456 WRITERDP(lp, LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA);
457 }
458
459 if (csr0 & LE_C0_RINT)
460 lance_rx (dev);
461
462 if (csr0 & LE_C0_TINT)
463 lance_tx (dev);
464
465 /* Log misc errors. */
466 if (csr0 & LE_C0_BABL)
467 dev->stats.tx_errors++; /* Tx babble. */
468 if (csr0 & LE_C0_MISS)
469 dev->stats.rx_errors++; /* Missed a Rx frame. */
470 if (csr0 & LE_C0_MERR) {
471 printk("%s: Bus master arbitration failure, status %4.4x.\n",
472 dev->name, csr0);
473 /* Restart the chip. */
474 WRITERDP(lp, LE_C0_STRT);
475 }
476
477 if (lp->tx_full && netif_queue_stopped(dev) && (TX_BUFFS_AVAIL >= 0)) {
478 lp->tx_full = 0;
479 netif_wake_queue (dev);
480 }
481
482 WRITERAP(lp, LE_CSR0);
483 WRITERDP(lp, LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|LE_C0_IDON|LE_C0_INEA);
484
485 spin_unlock (&lp->devlock);
486 return IRQ_HANDLED;
487 }
488
489 int lance_open (struct net_device *dev)
490 {
491 struct lance_private *lp = netdev_priv(dev);
492 int res;
493
494 /* Install the Interrupt handler. Or we could shunt this out to specific drivers? */
495 if (request_irq(lp->irq, lance_interrupt, IRQF_SHARED, lp->name, dev))
496 return -EAGAIN;
497
498 res = lance_reset(dev);
499 spin_lock_init(&lp->devlock);
500 netif_start_queue (dev);
501
502 return res;
503 }
504 EXPORT_SYMBOL_GPL(lance_open);
505
506 int lance_close (struct net_device *dev)
507 {
508 struct lance_private *lp = netdev_priv(dev);
509
510 netif_stop_queue (dev);
511
512 /* Stop the LANCE */
513 WRITERAP(lp, LE_CSR0);
514 WRITERDP(lp, LE_C0_STOP);
515
516 free_irq(lp->irq, dev);
517
518 return 0;
519 }
520 EXPORT_SYMBOL_GPL(lance_close);
521
522 void lance_tx_timeout(struct net_device *dev)
523 {
524 printk("lance_tx_timeout\n");
525 lance_reset(dev);
526 dev->trans_start = jiffies; /* prevent tx timeout */
527 netif_wake_queue (dev);
528 }
529 EXPORT_SYMBOL_GPL(lance_tx_timeout);
530
531 int lance_start_xmit (struct sk_buff *skb, struct net_device *dev)
532 {
533 struct lance_private *lp = netdev_priv(dev);
534 volatile struct lance_init_block *ib = lp->init_block;
535 int entry, skblen, len;
536 static int outs;
537 unsigned long flags;
538
539 if (!TX_BUFFS_AVAIL)
540 return NETDEV_TX_LOCKED;
541
542 netif_stop_queue (dev);
543
544 skblen = skb->len;
545
546 #ifdef DEBUG_DRIVER
547 /* dump the packet */
548 {
549 int i;
550
551 for (i = 0; i < 64; i++) {
552 if ((i % 16) == 0)
553 printk ("\n");
554 printk ("%2.2x ", skb->data [i]);
555 }
556 }
557 #endif
558 len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen;
559 entry = lp->tx_new & lp->tx_ring_mod_mask;
560 ib->btx_ring [entry].length = (-len) | 0xf000;
561 ib->btx_ring [entry].misc = 0;
562
563 if (skb->len < ETH_ZLEN)
564 memset((void *)&ib->tx_buf[entry][0], 0, ETH_ZLEN);
565 skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen);
566
567 /* Now, give the packet to the lance */
568 ib->btx_ring [entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN);
569 lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask;
570
571 outs++;
572 /* Kick the lance: transmit now */
573 WRITERDP(lp, LE_C0_INEA | LE_C0_TDMD);
574 dev_kfree_skb (skb);
575
576 spin_lock_irqsave (&lp->devlock, flags);
577 if (TX_BUFFS_AVAIL)
578 netif_start_queue (dev);
579 else
580 lp->tx_full = 1;
581 spin_unlock_irqrestore (&lp->devlock, flags);
582
583 return NETDEV_TX_OK;
584 }
585 EXPORT_SYMBOL_GPL(lance_start_xmit);
586
587 /* taken from the depca driver via a2065.c */
588 static void lance_load_multicast (struct net_device *dev)
589 {
590 struct lance_private *lp = netdev_priv(dev);
591 volatile struct lance_init_block *ib = lp->init_block;
592 volatile u16 *mcast_table = (u16 *)&ib->filter;
593 struct netdev_hw_addr *ha;
594 u32 crc;
595
596 /* set all multicast bits */
597 if (dev->flags & IFF_ALLMULTI){
598 ib->filter [0] = 0xffffffff;
599 ib->filter [1] = 0xffffffff;
600 return;
601 }
602 /* clear the multicast filter */
603 ib->filter [0] = 0;
604 ib->filter [1] = 0;
605
606 /* Add addresses */
607 netdev_for_each_mc_addr(ha, dev) {
608 crc = ether_crc_le(6, ha->addr);
609 crc = crc >> 26;
610 mcast_table [crc >> 4] |= 1 << (crc & 0xf);
611 }
612 }
613
614
615 void lance_set_multicast (struct net_device *dev)
616 {
617 struct lance_private *lp = netdev_priv(dev);
618 volatile struct lance_init_block *ib = lp->init_block;
619 int stopped;
620
621 stopped = netif_queue_stopped(dev);
622 if (!stopped)
623 netif_stop_queue (dev);
624
625 while (lp->tx_old != lp->tx_new)
626 schedule();
627
628 WRITERAP(lp, LE_CSR0);
629 WRITERDP(lp, LE_C0_STOP);
630 lance_init_ring (dev);
631
632 if (dev->flags & IFF_PROMISC) {
633 ib->mode |= LE_MO_PROM;
634 } else {
635 ib->mode &= ~LE_MO_PROM;
636 lance_load_multicast (dev);
637 }
638 load_csrs (lp);
639 init_restart_lance (lp);
640
641 if (!stopped)
642 netif_start_queue (dev);
643 }
644 EXPORT_SYMBOL_GPL(lance_set_multicast);
645
646 #ifdef CONFIG_NET_POLL_CONTROLLER
647 void lance_poll(struct net_device *dev)
648 {
649 struct lance_private *lp = netdev_priv(dev);
650
651 spin_lock (&lp->devlock);
652 WRITERAP(lp, LE_CSR0);
653 WRITERDP(lp, LE_C0_STRT);
654 spin_unlock (&lp->devlock);
655 lance_interrupt(dev->irq, dev);
656 }
657 #endif
658
659 MODULE_LICENSE("GPL");
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