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[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}
[net-next-2.6.git] / drivers / net / a2065.c
CommitLineData
1da177e4
LT		 1/*
2 * Amiga Linux/68k A2065 Ethernet Driver
3 *
4 * (C) Copyright 1995-2003 by Geert Uytterhoeven <geert@linux-m68k.org>
5 *
6 * Fixes and tips by:
7 * - Janos Farkas (CHEXUM@sparta.banki.hu)
8 * - Jes Degn Soerensen (jds@kom.auc.dk)
9 * - Matt Domsch (Matt_Domsch@dell.com)
10 *
11 * ----------------------------------------------------------------------------
12 *
13 * This program is based on
14 *
15 * ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver
16 * (C) Copyright 1995 by Geert Uytterhoeven,
17 * Peter De Schrijver
18 *
19 * lance.c: An AMD LANCE ethernet driver for linux.
20 * Written 1993-94 by Donald Becker.
21 *
22 * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller
23 * Advanced Micro Devices
24 * Publication #16907, Rev. B, Amendment/0, May 1994
25 *
26 * ----------------------------------------------------------------------------
27 *
28 * This file is subject to the terms and conditions of the GNU General Public
29 * License. See the file COPYING in the main directory of the Linux
30 * distribution for more details.
31 *
32 * ----------------------------------------------------------------------------
33 *
34 * The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains:
35 *
36 * - an Am7990 Local Area Network Controller for Ethernet (LANCE) with
37 * both 10BASE-2 (thin coax) and AUI (DB-15) connectors
38 */
39
40#include <linux/errno.h>
41#include <linux/netdevice.h>
42#include <linux/etherdevice.h>
43#include <linux/module.h>
44#include <linux/stddef.h>
45#include <linux/kernel.h>
46#include <linux/interrupt.h>
47#include <linux/ioport.h>
48#include <linux/skbuff.h>
49#include <linux/slab.h>
50#include <linux/string.h>
1da177e4
LT		 51#include <linux/init.h>
52#include <linux/crc32.h>
53#include <linux/zorro.h>
54#include <linux/bitops.h>
55
56#include <asm/irq.h>
57#include <asm/amigaints.h>
58#include <asm/amigahw.h>
59
60#include "a2065.h"
61
62
63 /*
64 * Transmit/Receive Ring Definitions
65 */
66
67#define LANCE_LOG_TX_BUFFERS (2)
68#define LANCE_LOG_RX_BUFFERS (4)
69
70#define TX_RING_SIZE (1<<LANCE_LOG_TX_BUFFERS)
71#define RX_RING_SIZE (1<<LANCE_LOG_RX_BUFFERS)
72
73#define TX_RING_MOD_MASK (TX_RING_SIZE-1)
74#define RX_RING_MOD_MASK (RX_RING_SIZE-1)
75
76#define PKT_BUF_SIZE (1544)
77#define RX_BUFF_SIZE PKT_BUF_SIZE
78#define TX_BUFF_SIZE PKT_BUF_SIZE
79
80
81 /*
82 * Layout of the Lance's RAM Buffer
83 */
84
85
86struct lance_init_block {
87 unsigned short mode; /* Pre-set mode (reg. 15) */
88 unsigned char phys_addr[6]; /* Physical ethernet address */
89 unsigned filter[2]; /* Multicast filter. */
90
91 /* Receive and transmit ring base, along with extra bits. */
92 unsigned short rx_ptr; /* receive descriptor addr */
93 unsigned short rx_len; /* receive len and high addr */
94 unsigned short tx_ptr; /* transmit descriptor addr */
95 unsigned short tx_len; /* transmit len and high addr */
6aa20a22 96
1da177e4
LT		 97 /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */
98 struct lance_rx_desc brx_ring[RX_RING_SIZE];
99 struct lance_tx_desc btx_ring[TX_RING_SIZE];
100
101 char rx_buf [RX_RING_SIZE][RX_BUFF_SIZE];
102 char tx_buf [TX_RING_SIZE][TX_BUFF_SIZE];
103};
104
105
106 /*
107 * Private Device Data
108 */
109
110struct lance_private {
111 char *name;
112 volatile struct lance_regs *ll;
113 volatile struct lance_init_block *init_block; /* Hosts view */
114 volatile struct lance_init_block *lance_init_block; /* Lance view */
115
116 int rx_new, tx_new;
117 int rx_old, tx_old;
6aa20a22 118
1da177e4
LT		 119 int lance_log_rx_bufs, lance_log_tx_bufs;
120 int rx_ring_mod_mask, tx_ring_mod_mask;
121
122 struct net_device_stats stats;
123 int tpe; /* cable-selection is TPE */
124 int auto_select; /* cable-selection by carrier */
125 unsigned short busmaster_regval;
126
127#ifdef CONFIG_SUNLANCE
128 struct Linux_SBus_DMA *ledma; /* if set this points to ledma and arch=4m */
129 int burst_sizes; /* ledma SBus burst sizes */
130#endif
131 struct timer_list multicast_timer;
132};
133
134#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\
135 lp->tx_old+lp->tx_ring_mod_mask-lp->tx_new:\
136 lp->tx_old - lp->tx_new-1)
137
138
139#define LANCE_ADDR(x) ((int)(x) & ~0xff000000)
140
141/* Load the CSR registers */
142static void load_csrs (struct lance_private *lp)
143{
144 volatile struct lance_regs *ll = lp->ll;
145 volatile struct lance_init_block *aib = lp->lance_init_block;
146 int leptr;
147
148 leptr = LANCE_ADDR (aib);
149
150 ll->rap = LE_CSR1;
151 ll->rdp = (leptr & 0xFFFF);
152 ll->rap = LE_CSR2;
153 ll->rdp = leptr >> 16;
154 ll->rap = LE_CSR3;
155 ll->rdp = lp->busmaster_regval;
156
157 /* Point back to csr0 */
158 ll->rap = LE_CSR0;
159}
160
161#define ZERO 0
162
163/* Setup the Lance Rx and Tx rings */
164static void lance_init_ring (struct net_device *dev)
165{
166 struct lance_private *lp = netdev_priv(dev);
167 volatile struct lance_init_block *ib = lp->init_block;
168 volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */
169 int leptr;
170 int i;
171
172 aib = lp->lance_init_block;
173
174 /* Lock out other processes while setting up hardware */
175 netif_stop_queue(dev);
176 lp->rx_new = lp->tx_new = 0;
177 lp->rx_old = lp->tx_old = 0;
178
179 ib->mode = 0;
180
181 /* Copy the ethernet address to the lance init block
182 * Note that on the sparc you need to swap the ethernet address.
183 */
184 ib->phys_addr [0] = dev->dev_addr [1];
185 ib->phys_addr [1] = dev->dev_addr [0];
186 ib->phys_addr [2] = dev->dev_addr [3];
187 ib->phys_addr [3] = dev->dev_addr [2];
188 ib->phys_addr [4] = dev->dev_addr [5];
189 ib->phys_addr [5] = dev->dev_addr [4];
190
191 if (ZERO)
192 printk(KERN_DEBUG "TX rings:\n");
6aa20a22 193
1da177e4
LT		 194 /* Setup the Tx ring entries */
195 for (i = 0; i <= (1<<lp->lance_log_tx_bufs); i++) {
196 leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
197 ib->btx_ring [i].tmd0 = leptr;
198 ib->btx_ring [i].tmd1_hadr = leptr >> 16;
199 ib->btx_ring [i].tmd1_bits = 0;
200 ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */
201 ib->btx_ring [i].misc = 0;
202 if (i < 3 && ZERO)
203 printk(KERN_DEBUG "%d: 0x%8.8x\n", i, leptr);
204 }
205
206 /* Setup the Rx ring entries */
207 if (ZERO)
208 printk(KERN_DEBUG "RX rings:\n");
209 for (i = 0; i < (1<<lp->lance_log_rx_bufs); i++) {
210 leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
211
212 ib->brx_ring [i].rmd0 = leptr;
213 ib->brx_ring [i].rmd1_hadr = leptr >> 16;
214 ib->brx_ring [i].rmd1_bits = LE_R1_OWN;
215 ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000;
216 ib->brx_ring [i].mblength = 0;
217 if (i < 3 && ZERO)
218 printk(KERN_DEBUG "%d: 0x%8.8x\n", i, leptr);
219 }
220
221 /* Setup the initialization block */
6aa20a22 222
1da177e4
LT		 223 /* Setup rx descriptor pointer */
224 leptr = LANCE_ADDR(&aib->brx_ring);
225 ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
226 ib->rx_ptr = leptr;
227 if (ZERO)
228 printk(KERN_DEBUG "RX ptr: %8.8x\n", leptr);
6aa20a22 229
1da177e4
LT		 230 /* Setup tx descriptor pointer */
231 leptr = LANCE_ADDR(&aib->btx_ring);
232 ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
233 ib->tx_ptr = leptr;
234 if (ZERO)
235 printk(KERN_DEBUG "TX ptr: %8.8x\n", leptr);
236
237 /* Clear the multicast filter */
238 ib->filter [0] = 0;
239 ib->filter [1] = 0;
240}
241
242static int init_restart_lance (struct lance_private *lp)
243{
244 volatile struct lance_regs *ll = lp->ll;
245 int i;
246
247 ll->rap = LE_CSR0;
248 ll->rdp = LE_C0_INIT;
249
250 /* Wait for the lance to complete initialization */
251 for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++)
252 barrier();
253 if ((i == 100) || (ll->rdp & LE_C0_ERR)) {
254 printk(KERN_ERR "LANCE unopened after %d ticks, csr0=%4.4x.\n",
255 i, ll->rdp);
256 return -EIO;
257 }
258
259 /* Clear IDON by writing a "1", enable interrupts and start lance */
260 ll->rdp = LE_C0_IDON;
261 ll->rdp = LE_C0_INEA | LE_C0_STRT;
262
263 return 0;
264}
265
266static int lance_rx (struct net_device *dev)
267{
268 struct lance_private *lp = netdev_priv(dev);
269 volatile struct lance_init_block *ib = lp->init_block;
270 volatile struct lance_regs *ll = lp->ll;
271 volatile struct lance_rx_desc *rd;
272 unsigned char bits;
273 int len = 0; /* XXX shut up gcc warnings */
274 struct sk_buff *skb = 0; /* XXX shut up gcc warnings */
275
276#ifdef TEST_HITS
277 int i;
278 printk(KERN_DEBUG "[");
279 for (i = 0; i < RX_RING_SIZE; i++) {
280 if (i == lp->rx_new)
281 printk ("%s",
282 ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "_" : "X");
283 else
284 printk ("%s",
285 ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "." : "1");
286 }
287 printk ("]\n");
288#endif
6aa20a22 289
1da177e4
LT		 290 ll->rdp = LE_C0_RINT|LE_C0_INEA;
291 for (rd = &ib->brx_ring [lp->rx_new];
292 !((bits = rd->rmd1_bits) & LE_R1_OWN);
293 rd = &ib->brx_ring [lp->rx_new]) {
294
295 /* We got an incomplete frame? */
296 if ((bits & LE_R1_POK) != LE_R1_POK) {
297 lp->stats.rx_over_errors++;
298 lp->stats.rx_errors++;
299 continue;
300 } else if (bits & LE_R1_ERR) {
301 /* Count only the end frame as a rx error,
302 * not the beginning
303 */
304 if (bits & LE_R1_BUF) lp->stats.rx_fifo_errors++;
305 if (bits & LE_R1_CRC) lp->stats.rx_crc_errors++;
306 if (bits & LE_R1_OFL) lp->stats.rx_over_errors++;
307 if (bits & LE_R1_FRA) lp->stats.rx_frame_errors++;
308 if (bits & LE_R1_EOP) lp->stats.rx_errors++;
309 } else {
310 len = (rd->mblength & 0xfff) - 4;
311 skb = dev_alloc_skb (len+2);
312
313 if (skb == 0) {
314 printk(KERN_WARNING "%s: Memory squeeze, "
315 "deferring packet.\n", dev->name);
316 lp->stats.rx_dropped++;
317 rd->mblength = 0;
318 rd->rmd1_bits = LE_R1_OWN;
319 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
320 return 0;
321 }
6aa20a22 322
1da177e4
LT		 323 skb_reserve (skb, 2); /* 16 byte align */
324 skb_put (skb, len); /* make room */
325 eth_copy_and_sum(skb,
326 (unsigned char *)&(ib->rx_buf [lp->rx_new][0]),
327 len, 0);
328 skb->protocol = eth_type_trans (skb, dev);
329 netif_rx (skb);
330 dev->last_rx = jiffies;
331 lp->stats.rx_packets++;
332 lp->stats.rx_bytes += len;
333 }
334
335 /* Return the packet to the pool */
336 rd->mblength = 0;
337 rd->rmd1_bits = LE_R1_OWN;
338 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
339 }
340 return 0;
341}
342
343static int lance_tx (struct net_device *dev)
344{
345 struct lance_private *lp = netdev_priv(dev);
346 volatile struct lance_init_block *ib = lp->init_block;
347 volatile struct lance_regs *ll = lp->ll;
348 volatile struct lance_tx_desc *td;
349 int i, j;
350 int status;
351
352 /* csr0 is 2f3 */
353 ll->rdp = LE_C0_TINT | LE_C0_INEA;
354 /* csr0 is 73 */
355
356 j = lp->tx_old;
357 for (i = j; i != lp->tx_new; i = j) {
358 td = &ib->btx_ring [i];
359
360 /* If we hit a packet not owned by us, stop */
361 if (td->tmd1_bits & LE_T1_OWN)
362 break;
6aa20a22 363
1da177e4
LT		 364 if (td->tmd1_bits & LE_T1_ERR) {
365 status = td->misc;
6aa20a22 366
1da177e4
LT		 367 lp->stats.tx_errors++;
368 if (status & LE_T3_RTY) lp->stats.tx_aborted_errors++;
369 if (status & LE_T3_LCOL) lp->stats.tx_window_errors++;
370
371 if (status & LE_T3_CLOS) {
372 lp->stats.tx_carrier_errors++;
373 if (lp->auto_select) {
374 lp->tpe = 1 - lp->tpe;
375 printk(KERN_ERR "%s: Carrier Lost, "
376 "trying %s\n", dev->name,
377 lp->tpe?"TPE":"AUI");
378 /* Stop the lance */
379 ll->rap = LE_CSR0;
380 ll->rdp = LE_C0_STOP;
381 lance_init_ring (dev);
382 load_csrs (lp);
383 init_restart_lance (lp);
384 return 0;
385 }
386 }
387
388 /* buffer errors and underflows turn off the transmitter */
389 /* Restart the adapter */
390 if (status & (LE_T3_BUF|LE_T3_UFL)) {
391 lp->stats.tx_fifo_errors++;
392
393 printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, "
394 "restarting\n", dev->name);
395 /* Stop the lance */
396 ll->rap = LE_CSR0;
397 ll->rdp = LE_C0_STOP;
398 lance_init_ring (dev);
399 load_csrs (lp);
400 init_restart_lance (lp);
401 return 0;
402 }
403 } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
404 /*
405 * So we don't count the packet more than once.
406 */
407 td->tmd1_bits &= ~(LE_T1_POK);
408
409 /* One collision before packet was sent. */
410 if (td->tmd1_bits & LE_T1_EONE)
411 lp->stats.collisions++;
412
413 /* More than one collision, be optimistic. */
414 if (td->tmd1_bits & LE_T1_EMORE)
415 lp->stats.collisions += 2;
416
417 lp->stats.tx_packets++;
418 }
6aa20a22 419
1da177e4
LT		 420 j = (j + 1) & lp->tx_ring_mod_mask;
421 }
422 lp->tx_old = j;
423 ll->rdp = LE_C0_TINT | LE_C0_INEA;
424 return 0;
425}
426
7d12e780 427static irqreturn_t lance_interrupt (int irq, void *dev_id)
1da177e4
LT		 428{
429 struct net_device *dev;
430 struct lance_private *lp;
431 volatile struct lance_regs *ll;
432 int csr0;
433
434 dev = (struct net_device *) dev_id;
435
436 lp = netdev_priv(dev);
437 ll = lp->ll;
438
439 ll->rap = LE_CSR0; /* LANCE Controller Status */
440 csr0 = ll->rdp;
441
442 if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */
443 return IRQ_NONE; /* been generated by the Lance. */
444
445 /* Acknowledge all the interrupt sources ASAP */
446 ll->rdp = csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|
447 LE_C0_INIT);
448
449 if ((csr0 & LE_C0_ERR)) {
450 /* Clear the error condition */
451 ll->rdp = LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA;
452 }
6aa20a22 453
1da177e4
LT		 454 if (csr0 & LE_C0_RINT)
455 lance_rx (dev);
456
457 if (csr0 & LE_C0_TINT)
458 lance_tx (dev);
459
460 /* Log misc errors. */
461 if (csr0 & LE_C0_BABL)
462 lp->stats.tx_errors++; /* Tx babble. */
463 if (csr0 & LE_C0_MISS)
464 lp->stats.rx_errors++; /* Missed a Rx frame. */
465 if (csr0 & LE_C0_MERR) {
466 printk(KERN_ERR "%s: Bus master arbitration failure, status "
467 "%4.4x.\n", dev->name, csr0);
468 /* Restart the chip. */
469 ll->rdp = LE_C0_STRT;
470 }
471
472 if (netif_queue_stopped(dev) && TX_BUFFS_AVAIL > 0)
473 netif_wake_queue(dev);
474
475 ll->rap = LE_CSR0;
476 ll->rdp = LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|
477 LE_C0_IDON|LE_C0_INEA;
478 return IRQ_HANDLED;
479}
480
481struct net_device *last_dev = 0;
482
483static int lance_open (struct net_device *dev)
484{
485 struct lance_private *lp = netdev_priv(dev);
486 volatile struct lance_regs *ll = lp->ll;
487 int ret;
488
489 last_dev = dev;
490
491 /* Stop the Lance */
492 ll->rap = LE_CSR0;
493 ll->rdp = LE_C0_STOP;
494
495 /* Install the Interrupt handler */
1fb9df5d 496 ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED,
1da177e4
LT		 497 dev->name, dev);
498 if (ret) return ret;
499
500 load_csrs (lp);
501 lance_init_ring (dev);
502
503 netif_start_queue(dev);
504
505 return init_restart_lance (lp);
506}
507
508static int lance_close (struct net_device *dev)
509{
510 struct lance_private *lp = netdev_priv(dev);
511 volatile struct lance_regs *ll = lp->ll;
512
513 netif_stop_queue(dev);
514 del_timer_sync(&lp->multicast_timer);
515
516 /* Stop the card */
517 ll->rap = LE_CSR0;
518 ll->rdp = LE_C0_STOP;
519
520 free_irq(IRQ_AMIGA_PORTS, dev);
521 return 0;
522}
523
524static inline int lance_reset (struct net_device *dev)
525{
526 struct lance_private *lp = netdev_priv(dev);
527 volatile struct lance_regs *ll = lp->ll;
528 int status;
6aa20a22 529
1da177e4
LT		 530 /* Stop the lance */
531 ll->rap = LE_CSR0;
532 ll->rdp = LE_C0_STOP;
533
534 load_csrs (lp);
535
536 lance_init_ring (dev);
537 dev->trans_start = jiffies;
538 netif_start_queue(dev);
539
540 status = init_restart_lance (lp);
541#ifdef DEBUG_DRIVER
542 printk(KERN_DEBUG "Lance restart=%d\n", status);
543#endif
544 return status;
545}
546
547static void lance_tx_timeout(struct net_device *dev)
548{
549 struct lance_private *lp = netdev_priv(dev);
550 volatile struct lance_regs *ll = lp->ll;
551
552 printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n",
553 dev->name, ll->rdp);
554 lance_reset(dev);
555 netif_wake_queue(dev);
556}
557
558static int lance_start_xmit (struct sk_buff *skb, struct net_device *dev)
559{
560 struct lance_private *lp = netdev_priv(dev);
561 volatile struct lance_regs *ll = lp->ll;
562 volatile struct lance_init_block *ib = lp->init_block;
563 int entry, skblen, len;
564 int status = 0;
565 static int outs;
566 unsigned long flags;
567
568 skblen = skb->len;
569 len = skblen;
6aa20a22 570
1da177e4
LT		 571 if (len < ETH_ZLEN) {
572 len = ETH_ZLEN;
5b057c6b 573 if (skb_padto(skb, ETH_ZLEN))
1da177e4
LT		 574 return 0;
575 }
576
577 local_irq_save(flags);
578
579 if (!TX_BUFFS_AVAIL){
580 local_irq_restore(flags);
581 return -1;
582 }
583
584#ifdef DEBUG_DRIVER
585 /* dump the packet */
586 {
587 int i;
6aa20a22 588
1da177e4
LT		 589 for (i = 0; i < 64; i++) {
590 if ((i % 16) == 0)
591 printk("\n" KERN_DEBUG);
592 printk ("%2.2x ", skb->data [i]);
593 }
594 printk("\n");
595 }
596#endif
597 entry = lp->tx_new & lp->tx_ring_mod_mask;
598 ib->btx_ring [entry].length = (-len) | 0xf000;
599 ib->btx_ring [entry].misc = 0;
6aa20a22 600
d626f62b 601 skb_copy_from_linear_data(skb, &ib->tx_buf [entry][0], skblen);
1da177e4
LT		 602
603 /* Clear the slack of the packet, do I need this? */
604 if (len != skblen)
605 memset ((char *) &ib->tx_buf [entry][skblen], 0, len - skblen);
6aa20a22 606
1da177e4
LT		 607 /* Now, give the packet to the lance */
608 ib->btx_ring [entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN);
609 lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask;
610
611 outs++;
612
613 if (TX_BUFFS_AVAIL <= 0)
614 netif_stop_queue(dev);
615
616 /* Kick the lance: transmit now */
617 ll->rdp = LE_C0_INEA | LE_C0_TDMD;
618 dev->trans_start = jiffies;
619 dev_kfree_skb (skb);
6aa20a22 620
1da177e4
LT		 621 local_irq_restore(flags);
622
623 return status;
624}
625
626static struct net_device_stats *lance_get_stats (struct net_device *dev)
627{
628 struct lance_private *lp = netdev_priv(dev);
629
630 return &lp->stats;
631}
632
633/* taken from the depca driver */
634static void lance_load_multicast (struct net_device *dev)
635{
636 struct lance_private *lp = netdev_priv(dev);
637 volatile struct lance_init_block *ib = lp->init_block;
638 volatile u16 *mcast_table = (u16 *)&ib->filter;
639 struct dev_mc_list *dmi=dev->mc_list;
640 char *addrs;
641 int i;
642 u32 crc;
6aa20a22 643
1da177e4 644 /* set all multicast bits */
6aa20a22 645 if (dev->flags & IFF_ALLMULTI){
1da177e4
LT		 646 ib->filter [0] = 0xffffffff;
647 ib->filter [1] = 0xffffffff;
648 return;
649 }
650 /* clear the multicast filter */
651 ib->filter [0] = 0;
652 ib->filter [1] = 0;
653
654 /* Add addresses */
655 for (i = 0; i < dev->mc_count; i++){
656 addrs = dmi->dmi_addr;
657 dmi = dmi->next;
658
659 /* multicast address? */
660 if (!(*addrs & 1))
661 continue;
6aa20a22 662
1da177e4
LT		 663 crc = ether_crc_le(6, addrs);
664 crc = crc >> 26;
665 mcast_table [crc >> 4] |= 1 << (crc & 0xf);
666 }
667 return;
668}
669
670static void lance_set_multicast (struct net_device *dev)
671{
672 struct lance_private *lp = netdev_priv(dev);
673 volatile struct lance_init_block *ib = lp->init_block;
674 volatile struct lance_regs *ll = lp->ll;
675
676 if (!netif_running(dev))
677 return;
678
679 if (lp->tx_old != lp->tx_new) {
680 mod_timer(&lp->multicast_timer, jiffies + 4);
681 netif_wake_queue(dev);
682 return;
683 }
684
685 netif_stop_queue(dev);
686
687 ll->rap = LE_CSR0;
688 ll->rdp = LE_C0_STOP;
689 lance_init_ring (dev);
690
691 if (dev->flags & IFF_PROMISC) {
692 ib->mode |= LE_MO_PROM;
693 } else {
694 ib->mode &= ~LE_MO_PROM;
695 lance_load_multicast (dev);
696 }
697 load_csrs (lp);
698 init_restart_lance (lp);
699 netif_wake_queue(dev);
700}
701
702static int __devinit a2065_init_one(struct zorro_dev *z,
703 const struct zorro_device_id *ent);
704static void __devexit a2065_remove_one(struct zorro_dev *z);
705
706
707static struct zorro_device_id a2065_zorro_tbl[] __devinitdata = {
708 { ZORRO_PROD_CBM_A2065_1 },
709 { ZORRO_PROD_CBM_A2065_2 },
710 { ZORRO_PROD_AMERISTAR_A2065 },
711 { 0 }
712};
713
714static struct zorro_driver a2065_driver = {
715 .name = "a2065",
716 .id_table = a2065_zorro_tbl,
717 .probe = a2065_init_one,
718 .remove = __devexit_p(a2065_remove_one),
719};
720
721static int __devinit a2065_init_one(struct zorro_dev *z,
722 const struct zorro_device_id *ent)
723{
724 struct net_device *dev;
725 struct lance_private *priv;
726 unsigned long board, base_addr, mem_start;
727 struct resource *r1, *r2;
728 int err;
729
730 board = z->resource.start;
731 base_addr = board+A2065_LANCE;
732 mem_start = board+A2065_RAM;
733
734 r1 = request_mem_region(base_addr, sizeof(struct lance_regs),
735 "Am7990");
736 if (!r1)
737 return -EBUSY;
738 r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM");
739 if (!r2) {
740 release_resource(r1);
741 return -EBUSY;
742 }
743
744 dev = alloc_etherdev(sizeof(struct lance_private));
745 if (dev == NULL) {
746 release_resource(r1);
747 release_resource(r2);
748 return -ENOMEM;
749 }
750
751 SET_MODULE_OWNER(dev);
752 priv = netdev_priv(dev);
753
754 r1->name = dev->name;
755 r2->name = dev->name;
756
757 dev->dev_addr[0] = 0x00;
758 if (z->id != ZORRO_PROD_AMERISTAR_A2065) { /* Commodore */
759 dev->dev_addr[1] = 0x80;
760 dev->dev_addr[2] = 0x10;
761 } else { /* Ameristar */
762 dev->dev_addr[1] = 0x00;
763 dev->dev_addr[2] = 0x9f;
764 }
765 dev->dev_addr[3] = (z->rom.er_SerialNumber>>16) & 0xff;
766 dev->dev_addr[4] = (z->rom.er_SerialNumber>>8) & 0xff;
767 dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff;
768 dev->base_addr = ZTWO_VADDR(base_addr);
769 dev->mem_start = ZTWO_VADDR(mem_start);
770 dev->mem_end = dev->mem_start+A2065_RAM_SIZE;
771
772 priv->ll = (volatile struct lance_regs *)dev->base_addr;
773 priv->init_block = (struct lance_init_block *)dev->mem_start;
774 priv->lance_init_block = (struct lance_init_block *)A2065_RAM;
775 priv->auto_select = 0;
776 priv->busmaster_regval = LE_C3_BSWP;
777
778 priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS;
779 priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS;
780 priv->rx_ring_mod_mask = RX_RING_MOD_MASK;
781 priv->tx_ring_mod_mask = TX_RING_MOD_MASK;
782
783 dev->open = &lance_open;
784 dev->stop = &lance_close;
785 dev->hard_start_xmit = &lance_start_xmit;
786 dev->tx_timeout = &lance_tx_timeout;
787 dev->watchdog_timeo = 5*HZ;
788 dev->get_stats = &lance_get_stats;
789 dev->set_multicast_list = &lance_set_multicast;
790 dev->dma = 0;
791
792 init_timer(&priv->multicast_timer);
793 priv->multicast_timer.data = (unsigned long) dev;
794 priv->multicast_timer.function =
795 (void (*)(unsigned long)) &lance_set_multicast;
796
797 err = register_netdev(dev);
798 if (err) {
799 release_resource(r1);
800 release_resource(r2);
801 free_netdev(dev);
802 return err;
803 }
804 zorro_set_drvdata(z, dev);
805
806 printk(KERN_INFO "%s: A2065 at 0x%08lx, Ethernet Address "
807 "%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, board,
808 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
809 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
810
811 return 0;
812}
813
814
815static void __devexit a2065_remove_one(struct zorro_dev *z)
816{
817 struct net_device *dev = zorro_get_drvdata(z);
818
819 unregister_netdev(dev);
820 release_mem_region(ZTWO_PADDR(dev->base_addr),
821 sizeof(struct lance_regs));
822 release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE);
823 free_netdev(dev);
824}
825
826static int __init a2065_init_module(void)
827{
33d8675e 828 return zorro_register_driver(&a2065_driver);
1da177e4
LT		 829}
830
831static void __exit a2065_cleanup_module(void)
832{
833 zorro_unregister_driver(&a2065_driver);
834}
835
836module_init(a2065_init_module);
837module_exit(a2065_cleanup_module);
838
839MODULE_LICENSE("GPL");
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