forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 1
/
7990.c
680 lines (570 loc) · 21.6 KB
/
7990.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
/*
* 7990.c -- LANCE ethernet IC generic routines.
* This is an attempt to separate out the bits of various ethernet
* drivers that are common because they all use the AMD 7990 LANCE
* (Local Area Network Controller for Ethernet) chip.
*
* Copyright (C) 05/1998 Peter Maydell <[email protected]>
*
* Most of this stuff was obtained by looking at other LANCE drivers,
* in particular a2065.[ch]. The AMD C-LANCE datasheet was also helpful.
* NB: this was made easy by the fact that Jes Sorensen had cleaned up
* most of a2025 and sunlance with the aim of merging them, so the
* common code was pretty obvious.
*/
#include <linux/crc32.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/in.h>
#include <linux/route.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/skbuff.h>
#include <asm/irq.h>
/* Used for the temporal inet entries and routing */
#include <linux/socket.h>
#include <linux/bitops.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/pgtable.h>
#ifdef CONFIG_HP300
#include <asm/blinken.h>
#endif
#include "7990.h"
#define WRITERAP(lp,x) out_be16(lp->base + LANCE_RAP, (x))
#define WRITERDP(lp,x) out_be16(lp->base + LANCE_RDP, (x))
#define READRDP(lp) in_be16(lp->base + LANCE_RDP)
#if defined(CONFIG_HPLANCE) || defined(CONFIG_HPLANCE_MODULE)
#include "hplance.h"
#undef WRITERAP
#undef WRITERDP
#undef READRDP
#if defined(CONFIG_MVME147_NET) || defined(CONFIG_MVME147_NET_MODULE)
/* Lossage Factor Nine, Mr Sulu. */
#define WRITERAP(lp,x) (lp->writerap(lp,x))
#define WRITERDP(lp,x) (lp->writerdp(lp,x))
#define READRDP(lp) (lp->readrdp(lp))
#else
/* These inlines can be used if only CONFIG_HPLANCE is defined */
static inline void WRITERAP(struct lance_private *lp, __u16 value)
{
do {
out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value);
} while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
}
static inline void WRITERDP(struct lance_private *lp, __u16 value)
{
do {
out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value);
} while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
}
static inline __u16 READRDP(struct lance_private *lp)
{
__u16 value;
do {
value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP);
} while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
return value;
}
#endif
#endif /* CONFIG_HPLANCE || CONFIG_HPLANCE_MODULE */
/* debugging output macros, various flavours */
/* #define TEST_HITS */
#ifdef UNDEF
#define PRINT_RINGS() \
do { \
int t; \
for (t=0; t < RX_RING_SIZE; t++) { \
printk("R%d: @(%02X %04X) len %04X, mblen %04X, bits %02X\n",\
t, ib->brx_ring[t].rmd1_hadr, ib->brx_ring[t].rmd0,\
ib->brx_ring[t].length,\
ib->brx_ring[t].mblength, ib->brx_ring[t].rmd1_bits);\
}\
for (t=0; t < TX_RING_SIZE; t++) { \
printk("T%d: @(%02X %04X) len %04X, misc %04X, bits %02X\n",\
t, ib->btx_ring[t].tmd1_hadr, ib->btx_ring[t].tmd0,\
ib->btx_ring[t].length,\
ib->btx_ring[t].misc, ib->btx_ring[t].tmd1_bits);\
}\
} while (0)
#else
#define PRINT_RINGS()
#endif
/* Load the CSR registers. The LANCE has to be STOPped when we do this! */
static void load_csrs (struct lance_private *lp)
{
volatile struct lance_init_block *aib = lp->lance_init_block;
int leptr;
leptr = LANCE_ADDR (aib);
WRITERAP(lp, LE_CSR1); /* load address of init block */
WRITERDP(lp, leptr & 0xFFFF);
WRITERAP(lp, LE_CSR2);
WRITERDP(lp, leptr >> 16);
WRITERAP(lp, LE_CSR3);
WRITERDP(lp, lp->busmaster_regval); /* set byteswap/ALEctrl/byte ctrl */
/* Point back to csr0 */
WRITERAP(lp, LE_CSR0);
}
/* #define to 0 or 1 appropriately */
#define DEBUG_IRING 0
/* Set up the Lance Rx and Tx rings and the init block */
static void lance_init_ring (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */
int leptr;
int i;
aib = lp->lance_init_block;
lp->rx_new = lp->tx_new = 0;
lp->rx_old = lp->tx_old = 0;
ib->mode = LE_MO_PROM; /* normal, enable Tx & Rx */
/* Copy the ethernet address to the lance init block
* Notice that we do a byteswap if we're big endian.
* [I think this is the right criterion; at least, sunlance,
* a2065 and atarilance do the byteswap and lance.c (PC) doesn't.
* However, the datasheet says that the BSWAP bit doesn't affect
* the init block, so surely it should be low byte first for
* everybody? Um.]
* We could define the ib->physaddr as three 16bit values and
* use (addr[1] << 8) | addr[0] & co, but this is more efficient.
*/
#ifdef __BIG_ENDIAN
ib->phys_addr [0] = dev->dev_addr [1];
ib->phys_addr [1] = dev->dev_addr [0];
ib->phys_addr [2] = dev->dev_addr [3];
ib->phys_addr [3] = dev->dev_addr [2];
ib->phys_addr [4] = dev->dev_addr [5];
ib->phys_addr [5] = dev->dev_addr [4];
#else
for (i=0; i<6; i++)
ib->phys_addr[i] = dev->dev_addr[i];
#endif
if (DEBUG_IRING)
printk ("TX rings:\n");
lp->tx_full = 0;
/* Setup the Tx ring entries */
for (i = 0; i < (1<<lp->lance_log_tx_bufs); i++) {
leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
ib->btx_ring [i].tmd0 = leptr;
ib->btx_ring [i].tmd1_hadr = leptr >> 16;
ib->btx_ring [i].tmd1_bits = 0;
ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */
ib->btx_ring [i].misc = 0;
if (DEBUG_IRING)
printk ("%d: 0x%8.8x\n", i, leptr);
}
/* Setup the Rx ring entries */
if (DEBUG_IRING)
printk ("RX rings:\n");
for (i = 0; i < (1<<lp->lance_log_rx_bufs); i++) {
leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
ib->brx_ring [i].rmd0 = leptr;
ib->brx_ring [i].rmd1_hadr = leptr >> 16;
ib->brx_ring [i].rmd1_bits = LE_R1_OWN;
/* 0xf000 == bits that must be one (reserved, presumably) */
ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000;
ib->brx_ring [i].mblength = 0;
if (DEBUG_IRING)
printk ("%d: 0x%8.8x\n", i, leptr);
}
/* Setup the initialization block */
/* Setup rx descriptor pointer */
leptr = LANCE_ADDR(&aib->brx_ring);
ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
ib->rx_ptr = leptr;
if (DEBUG_IRING)
printk ("RX ptr: %8.8x\n", leptr);
/* Setup tx descriptor pointer */
leptr = LANCE_ADDR(&aib->btx_ring);
ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
ib->tx_ptr = leptr;
if (DEBUG_IRING)
printk ("TX ptr: %8.8x\n", leptr);
/* Clear the multicast filter */
ib->filter [0] = 0;
ib->filter [1] = 0;
PRINT_RINGS();
}
/* LANCE must be STOPped before we do this, too... */
static int init_restart_lance (struct lance_private *lp)
{
int i;
WRITERAP(lp, LE_CSR0);
WRITERDP(lp, LE_C0_INIT);
/* Need a hook here for sunlance ledma stuff */
/* Wait for the lance to complete initialization */
for (i = 0; (i < 100) && !(READRDP(lp) & (LE_C0_ERR | LE_C0_IDON)); i++)
barrier();
if ((i == 100) || (READRDP(lp) & LE_C0_ERR)) {
printk ("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, READRDP(lp));
return -1;
}
/* Clear IDON by writing a "1", enable interrupts and start lance */
WRITERDP(lp, LE_C0_IDON);
WRITERDP(lp, LE_C0_INEA | LE_C0_STRT);
return 0;
}
static int lance_reset (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
int status;
/* Stop the lance */
WRITERAP(lp, LE_CSR0);
WRITERDP(lp, LE_C0_STOP);
load_csrs (lp);
lance_init_ring (dev);
dev->trans_start = jiffies;
status = init_restart_lance (lp);
#ifdef DEBUG_DRIVER
printk ("Lance restart=%d\n", status);
#endif
return status;
}
static int lance_rx (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
volatile struct lance_rx_desc *rd;
unsigned char bits;
int len = 0; /* XXX shut up gcc warnings */
struct sk_buff *skb = 0; /* XXX shut up gcc warnings */
#ifdef TEST_HITS
int i;
#endif
#ifdef TEST_HITS
printk ("[");
for (i = 0; i < RX_RING_SIZE; i++) {
if (i == lp->rx_new)
printk ("%s",
ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "_" : "X");
else
printk ("%s",
ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "." : "1");
}
printk ("]");
#endif
#ifdef CONFIG_HP300
blinken_leds(0x40, 0);
#endif
WRITERDP(lp, LE_C0_RINT | LE_C0_INEA); /* ack Rx int, reenable ints */
for (rd = &ib->brx_ring [lp->rx_new]; /* For each Rx ring we own... */
!((bits = rd->rmd1_bits) & LE_R1_OWN);
rd = &ib->brx_ring [lp->rx_new]) {
/* We got an incomplete frame? */
if ((bits & LE_R1_POK) != LE_R1_POK) {
lp->stats.rx_over_errors++;
lp->stats.rx_errors++;
continue;
} else if (bits & LE_R1_ERR) {
/* Count only the end frame as a rx error,
* not the beginning
*/
if (bits & LE_R1_BUF) lp->stats.rx_fifo_errors++;
if (bits & LE_R1_CRC) lp->stats.rx_crc_errors++;
if (bits & LE_R1_OFL) lp->stats.rx_over_errors++;
if (bits & LE_R1_FRA) lp->stats.rx_frame_errors++;
if (bits & LE_R1_EOP) lp->stats.rx_errors++;
} else {
len = (rd->mblength & 0xfff) - 4;
skb = dev_alloc_skb (len+2);
if (skb == 0) {
printk ("%s: Memory squeeze, deferring packet.\n",
dev->name);
lp->stats.rx_dropped++;
rd->mblength = 0;
rd->rmd1_bits = LE_R1_OWN;
lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
return 0;
}
skb_reserve (skb, 2); /* 16 byte align */
skb_put (skb, len); /* make room */
eth_copy_and_sum(skb,
(unsigned char *)&(ib->rx_buf [lp->rx_new][0]),
len, 0);
skb->protocol = eth_type_trans (skb, dev);
netif_rx (skb);
dev->last_rx = jiffies;
lp->stats.rx_packets++;
lp->stats.rx_bytes += len;
}
/* Return the packet to the pool */
rd->mblength = 0;
rd->rmd1_bits = LE_R1_OWN;
lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
}
return 0;
}
static int lance_tx (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
volatile struct lance_tx_desc *td;
int i, j;
int status;
#ifdef CONFIG_HP300
blinken_leds(0x80, 0);
#endif
/* csr0 is 2f3 */
WRITERDP(lp, LE_C0_TINT | LE_C0_INEA);
/* csr0 is 73 */
j = lp->tx_old;
for (i = j; i != lp->tx_new; i = j) {
td = &ib->btx_ring [i];
/* If we hit a packet not owned by us, stop */
if (td->tmd1_bits & LE_T1_OWN)
break;
if (td->tmd1_bits & LE_T1_ERR) {
status = td->misc;
lp->stats.tx_errors++;
if (status & LE_T3_RTY) lp->stats.tx_aborted_errors++;
if (status & LE_T3_LCOL) lp->stats.tx_window_errors++;
if (status & LE_T3_CLOS) {
lp->stats.tx_carrier_errors++;
if (lp->auto_select) {
lp->tpe = 1 - lp->tpe;
printk("%s: Carrier Lost, trying %s\n",
dev->name, lp->tpe?"TPE":"AUI");
/* Stop the lance */
WRITERAP(lp, LE_CSR0);
WRITERDP(lp, LE_C0_STOP);
lance_init_ring (dev);
load_csrs (lp);
init_restart_lance (lp);
return 0;
}
}
/* buffer errors and underflows turn off the transmitter */
/* Restart the adapter */
if (status & (LE_T3_BUF|LE_T3_UFL)) {
lp->stats.tx_fifo_errors++;
printk ("%s: Tx: ERR_BUF|ERR_UFL, restarting\n",
dev->name);
/* Stop the lance */
WRITERAP(lp, LE_CSR0);
WRITERDP(lp, LE_C0_STOP);
lance_init_ring (dev);
load_csrs (lp);
init_restart_lance (lp);
return 0;
}
} else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
/*
* So we don't count the packet more than once.
*/
td->tmd1_bits &= ~(LE_T1_POK);
/* One collision before packet was sent. */
if (td->tmd1_bits & LE_T1_EONE)
lp->stats.collisions++;
/* More than one collision, be optimistic. */
if (td->tmd1_bits & LE_T1_EMORE)
lp->stats.collisions += 2;
lp->stats.tx_packets++;
}
j = (j + 1) & lp->tx_ring_mod_mask;
}
lp->tx_old = j;
WRITERDP(lp, LE_C0_TINT | LE_C0_INEA);
return 0;
}
static irqreturn_t
lance_interrupt (int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *)dev_id;
struct lance_private *lp = netdev_priv(dev);
int csr0;
spin_lock (&lp->devlock);
WRITERAP(lp, LE_CSR0); /* LANCE Controller Status */
csr0 = READRDP(lp);
PRINT_RINGS();
if (!(csr0 & LE_C0_INTR)) { /* Check if any interrupt has */
spin_unlock (&lp->devlock);
return IRQ_NONE; /* been generated by the Lance. */
}
/* Acknowledge all the interrupt sources ASAP */
WRITERDP(lp, csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|LE_C0_INIT));
if ((csr0 & LE_C0_ERR)) {
/* Clear the error condition */
WRITERDP(lp, LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA);
}
if (csr0 & LE_C0_RINT)
lance_rx (dev);
if (csr0 & LE_C0_TINT)
lance_tx (dev);
/* Log misc errors. */
if (csr0 & LE_C0_BABL)
lp->stats.tx_errors++; /* Tx babble. */
if (csr0 & LE_C0_MISS)
lp->stats.rx_errors++; /* Missed a Rx frame. */
if (csr0 & LE_C0_MERR) {
printk("%s: Bus master arbitration failure, status %4.4x.\n",
dev->name, csr0);
/* Restart the chip. */
WRITERDP(lp, LE_C0_STRT);
}
if (lp->tx_full && netif_queue_stopped(dev) && (TX_BUFFS_AVAIL >= 0)) {
lp->tx_full = 0;
netif_wake_queue (dev);
}
WRITERAP(lp, LE_CSR0);
WRITERDP(lp, LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|LE_C0_IDON|LE_C0_INEA);
spin_unlock (&lp->devlock);
return IRQ_HANDLED;
}
int lance_open (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
int res;
/* Install the Interrupt handler. Or we could shunt this out to specific drivers? */
if (request_irq(lp->irq, lance_interrupt, IRQF_SHARED, lp->name, dev))
return -EAGAIN;
res = lance_reset(dev);
spin_lock_init(&lp->devlock);
netif_start_queue (dev);
return res;
}
int lance_close (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
netif_stop_queue (dev);
/* Stop the LANCE */
WRITERAP(lp, LE_CSR0);
WRITERDP(lp, LE_C0_STOP);
free_irq(lp->irq, dev);
return 0;
}
void lance_tx_timeout(struct net_device *dev)
{
printk("lance_tx_timeout\n");
lance_reset(dev);
dev->trans_start = jiffies;
netif_wake_queue (dev);
}
int lance_start_xmit (struct sk_buff *skb, struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
int entry, skblen, len;
static int outs;
unsigned long flags;
if (!TX_BUFFS_AVAIL)
return -1;
netif_stop_queue (dev);
skblen = skb->len;
#ifdef DEBUG_DRIVER
/* dump the packet */
{
int i;
for (i = 0; i < 64; i++) {
if ((i % 16) == 0)
printk ("\n");
printk ("%2.2x ", skb->data [i]);
}
}
#endif
len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen;
entry = lp->tx_new & lp->tx_ring_mod_mask;
ib->btx_ring [entry].length = (-len) | 0xf000;
ib->btx_ring [entry].misc = 0;
if (skb->len < ETH_ZLEN)
memset((void *)&ib->tx_buf[entry][0], 0, ETH_ZLEN);
skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen);
/* Now, give the packet to the lance */
ib->btx_ring [entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN);
lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask;
outs++;
/* Kick the lance: transmit now */
WRITERDP(lp, LE_C0_INEA | LE_C0_TDMD);
dev->trans_start = jiffies;
dev_kfree_skb (skb);
spin_lock_irqsave (&lp->devlock, flags);
if (TX_BUFFS_AVAIL)
netif_start_queue (dev);
else
lp->tx_full = 1;
spin_unlock_irqrestore (&lp->devlock, flags);
return 0;
}
struct net_device_stats *lance_get_stats (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
return &lp->stats;
}
/* taken from the depca driver via a2065.c */
static void lance_load_multicast (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
volatile u16 *mcast_table = (u16 *)&ib->filter;
struct dev_mc_list *dmi=dev->mc_list;
char *addrs;
int i;
u32 crc;
/* set all multicast bits */
if (dev->flags & IFF_ALLMULTI){
ib->filter [0] = 0xffffffff;
ib->filter [1] = 0xffffffff;
return;
}
/* clear the multicast filter */
ib->filter [0] = 0;
ib->filter [1] = 0;
/* Add addresses */
for (i = 0; i < dev->mc_count; i++){
addrs = dmi->dmi_addr;
dmi = dmi->next;
/* multicast address? */
if (!(*addrs & 1))
continue;
crc = ether_crc_le(6, addrs);
crc = crc >> 26;
mcast_table [crc >> 4] |= 1 << (crc & 0xf);
}
return;
}
void lance_set_multicast (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
int stopped;
stopped = netif_queue_stopped(dev);
if (!stopped)
netif_stop_queue (dev);
while (lp->tx_old != lp->tx_new)
schedule();
WRITERAP(lp, LE_CSR0);
WRITERDP(lp, LE_C0_STOP);
lance_init_ring (dev);
if (dev->flags & IFF_PROMISC) {
ib->mode |= LE_MO_PROM;
} else {
ib->mode &= ~LE_MO_PROM;
lance_load_multicast (dev);
}
load_csrs (lp);
init_restart_lance (lp);
if (!stopped)
netif_start_queue (dev);
}
#ifdef CONFIG_NET_POLL_CONTROLLER
void lance_poll(struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
spin_lock (&lp->devlock);
WRITERAP(lp, LE_CSR0);
WRITERDP(lp, LE_C0_STRT);
spin_unlock (&lp->devlock);
lance_interrupt(dev->irq, dev);
}
#endif
MODULE_LICENSE("GPL");