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[linux-2.6/linux-mips.git] / drivers / net / a2065.c
blobb9eda56b056fd3299aebbedcda3ad8255a509ef5
1 /*
2 * Amiga Linux/68k A2065 Ethernet Driver
3 *
4 * (C) Copyright 1995 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>
51 #include <linux/config.h>
52 #include <linux/init.h>
53 #include <linux/crc32.h>
54 #include <linux/zorro.h>
55
56 #include <asm/bitops.h>
57 #include <asm/irq.h>
58 #include <asm/amigaints.h>
59 #include <asm/amigahw.h>
60
61 #include "a2065.h"
62
63
64 /*
65 * Transmit/Receive Ring Definitions
66 */
67
68 #define LANCE_LOG_TX_BUFFERS (2)
69 #define LANCE_LOG_RX_BUFFERS (4)
70
71 #define TX_RING_SIZE (1<<LANCE_LOG_TX_BUFFERS)
72 #define RX_RING_SIZE (1<<LANCE_LOG_RX_BUFFERS)
73
74 #define TX_RING_MOD_MASK (TX_RING_SIZE-1)
75 #define RX_RING_MOD_MASK (RX_RING_SIZE-1)
76
77 #define PKT_BUF_SIZE (1544)
78 #define RX_BUFF_SIZE PKT_BUF_SIZE
79 #define TX_BUFF_SIZE PKT_BUF_SIZE
80
81
82 /*
83 * Layout of the Lance's RAM Buffer
84 */
85
86
87 struct lance_init_block {
88 unsigned short mode; /* Pre-set mode (reg. 15) */
89 unsigned char phys_addr[6]; /* Physical ethernet address */
90 unsigned filter[2]; /* Multicast filter. */
91
92 /* Receive and transmit ring base, along with extra bits. */
93 unsigned short rx_ptr; /* receive descriptor addr */
94 unsigned short rx_len; /* receive len and high addr */
95 unsigned short tx_ptr; /* transmit descriptor addr */
96 unsigned short tx_len; /* transmit len and high addr */
97
98 /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */
99 struct lance_rx_desc brx_ring[RX_RING_SIZE];
100 struct lance_tx_desc btx_ring[TX_RING_SIZE];
101
102 char rx_buf [RX_RING_SIZE][RX_BUFF_SIZE];
103 char tx_buf [TX_RING_SIZE][TX_BUFF_SIZE];
104 };
105
106
107 /*
108 * Private Device Data
109 */
110
111 struct lance_private {
112 char *name;
113 volatile struct lance_regs *ll;
114 volatile struct lance_init_block *init_block; /* Hosts view */
115 volatile struct lance_init_block *lance_init_block; /* Lance view */
116
117 int rx_new, tx_new;
118 int rx_old, tx_old;
119
120 int lance_log_rx_bufs, lance_log_tx_bufs;
121 int rx_ring_mod_mask, tx_ring_mod_mask;
122
123 struct net_device_stats stats;
124 int tpe; /* cable-selection is TPE */
125 int auto_select; /* cable-selection by carrier */
126 unsigned short busmaster_regval;
127
128 #ifdef CONFIG_SUNLANCE
129 struct Linux_SBus_DMA *ledma; /* if set this points to ledma and arch=4m */
130 int burst_sizes; /* ledma SBus burst sizes */
131 #endif
132 struct timer_list multicast_timer;
133 struct net_device *dev; /* Backpointer */
134 struct lance_private *next_module;
135 };
136
137 #ifdef MODULE
138 static struct lance_private *root_a2065_dev;
139 #endif
140
141 #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\
142 lp->tx_old+lp->tx_ring_mod_mask-lp->tx_new:\
143 lp->tx_old - lp->tx_new-1)
144
145
146 #define LANCE_ADDR(x) ((int)(x) & ~0xff000000)
147
148 /* Load the CSR registers */
149 static void load_csrs (struct lance_private *lp)
150 {
151 volatile struct lance_regs *ll = lp->ll;
152 volatile struct lance_init_block *aib = lp->lance_init_block;
153 int leptr;
154
155 leptr = LANCE_ADDR (aib);
156
157 ll->rap = LE_CSR1;
158 ll->rdp = (leptr & 0xFFFF);
159 ll->rap = LE_CSR2;
160 ll->rdp = leptr >> 16;
161 ll->rap = LE_CSR3;
162 ll->rdp = lp->busmaster_regval;
163
164 /* Point back to csr0 */
165 ll->rap = LE_CSR0;
166 }
167
168 #define ZERO 0
169
170 /* Setup the Lance Rx and Tx rings */
171 static void lance_init_ring (struct net_device *dev)
172 {
173 struct lance_private *lp = (struct lance_private *) dev->priv;
174 volatile struct lance_init_block *ib = lp->init_block;
175 volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */
176 int leptr;
177 int i;
178
179 aib = lp->lance_init_block;
180
181 /* Lock out other processes while setting up hardware */
182 netif_stop_queue(dev);
183 lp->rx_new = lp->tx_new = 0;
184 lp->rx_old = lp->tx_old = 0;
185
186 ib->mode = 0;
187
188 /* Copy the ethernet address to the lance init block
189 * Note that on the sparc you need to swap the ethernet address.
190 */
191 ib->phys_addr [0] = dev->dev_addr [1];
192 ib->phys_addr [1] = dev->dev_addr [0];
193 ib->phys_addr [2] = dev->dev_addr [3];
194 ib->phys_addr [3] = dev->dev_addr [2];
195 ib->phys_addr [4] = dev->dev_addr [5];
196 ib->phys_addr [5] = dev->dev_addr [4];
197
198 if (ZERO)
199 printk ("TX rings:\n");
200
201 /* Setup the Tx ring entries */
202 for (i = 0; i <= (1<<lp->lance_log_tx_bufs); i++) {
203 leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
204 ib->btx_ring [i].tmd0 = leptr;
205 ib->btx_ring [i].tmd1_hadr = leptr >> 16;
206 ib->btx_ring [i].tmd1_bits = 0;
207 ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */
208 ib->btx_ring [i].misc = 0;
209 if (i < 3)
210 if (ZERO) printk ("%d: 0x%8.8x\n", i, leptr);
211 }
212
213 /* Setup the Rx ring entries */
214 if (ZERO)
215 printk ("RX rings:\n");
216 for (i = 0; i < (1<<lp->lance_log_rx_bufs); i++) {
217 leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
218
219 ib->brx_ring [i].rmd0 = leptr;
220 ib->brx_ring [i].rmd1_hadr = leptr >> 16;
221 ib->brx_ring [i].rmd1_bits = LE_R1_OWN;
222 ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000;
223 ib->brx_ring [i].mblength = 0;
224 if (i < 3 && ZERO)
225 printk ("%d: 0x%8.8x\n", i, leptr);
226 }
227
228 /* Setup the initialization block */
229
230 /* Setup rx descriptor pointer */
231 leptr = LANCE_ADDR(&aib->brx_ring);
232 ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
233 ib->rx_ptr = leptr;
234 if (ZERO)
235 printk ("RX ptr: %8.8x\n", leptr);
236
237 /* Setup tx descriptor pointer */
238 leptr = LANCE_ADDR(&aib->btx_ring);
239 ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
240 ib->tx_ptr = leptr;
241 if (ZERO)
242 printk ("TX ptr: %8.8x\n", leptr);
243
244 /* Clear the multicast filter */
245 ib->filter [0] = 0;
246 ib->filter [1] = 0;
247 }
248
249 static int init_restart_lance (struct lance_private *lp)
250 {
251 volatile struct lance_regs *ll = lp->ll;
252 int i;
253
254 ll->rap = LE_CSR0;
255 ll->rdp = LE_C0_INIT;
256
257 /* Wait for the lance to complete initialization */
258 for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++)
259 barrier();
260 if ((i == 100) || (ll->rdp & LE_C0_ERR)) {
261 printk ("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, ll->rdp);
262 return -EIO;
263 }
264
265 /* Clear IDON by writing a "1", enable interrupts and start lance */
266 ll->rdp = LE_C0_IDON;
267 ll->rdp = LE_C0_INEA | LE_C0_STRT;
268
269 return 0;
270 }
271
272 static int lance_rx (struct net_device *dev)
273 {
274 struct lance_private *lp = (struct lance_private *) dev->priv;
275 volatile struct lance_init_block *ib = lp->init_block;
276 volatile struct lance_regs *ll = lp->ll;
277 volatile struct lance_rx_desc *rd;
278 unsigned char bits;
279 int len = 0; /* XXX shut up gcc warnings */
280 struct sk_buff *skb = 0; /* XXX shut up gcc warnings */
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
295 ll->rdp = LE_C0_RINT|LE_C0_INEA;
296 for (rd = &ib->brx_ring [lp->rx_new];
297 !((bits = rd->rmd1_bits) & LE_R1_OWN);
298 rd = &ib->brx_ring [lp->rx_new]) {
299
300 /* We got an incomplete frame? */
301 if ((bits & LE_R1_POK) != LE_R1_POK) {
302 lp->stats.rx_over_errors++;
303 lp->stats.rx_errors++;
304 continue;
305 } else if (bits & LE_R1_ERR) {
306 /* Count only the end frame as a rx error,
307 * not the beginning
308 */
309 if (bits & LE_R1_BUF) lp->stats.rx_fifo_errors++;
310 if (bits & LE_R1_CRC) lp->stats.rx_crc_errors++;
311 if (bits & LE_R1_OFL) lp->stats.rx_over_errors++;
312 if (bits & LE_R1_FRA) lp->stats.rx_frame_errors++;
313 if (bits & LE_R1_EOP) lp->stats.rx_errors++;
314 } else {
315 len = (rd->mblength & 0xfff) - 4;
316 skb = dev_alloc_skb (len+2);
317
318 if (skb == 0) {
319 printk ("%s: Memory squeeze, deferring packet.\n",
320 dev->name);
321 lp->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->dev = dev;
329 skb_reserve (skb, 2); /* 16 byte align */
330 skb_put (skb, len); /* make room */
331 eth_copy_and_sum(skb,
332 (unsigned char *)&(ib->rx_buf [lp->rx_new][0]),
333 len, 0);
334 skb->protocol = eth_type_trans (skb, dev);
335 netif_rx (skb);
336 dev->last_rx = jiffies;
337 lp->stats.rx_packets++;
338 lp->stats.rx_bytes += len;
339 }
340
341 /* Return the packet to the pool */
342 rd->mblength = 0;
343 rd->rmd1_bits = LE_R1_OWN;
344 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
345 }
346 return 0;
347 }
348
349 static int lance_tx (struct net_device *dev)
350 {
351 struct lance_private *lp = (struct lance_private *) dev->priv;
352 volatile struct lance_init_block *ib = lp->init_block;
353 volatile struct lance_regs *ll = lp->ll;
354 volatile struct lance_tx_desc *td;
355 int i, j;
356 int status;
357
358 /* csr0 is 2f3 */
359 ll->rdp = 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 lp->stats.tx_errors++;
374 if (status & LE_T3_RTY) lp->stats.tx_aborted_errors++;
375 if (status & LE_T3_LCOL) lp->stats.tx_window_errors++;
376
377 if (status & LE_T3_CLOS) {
378 lp->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 ll->rap = LE_CSR0;
385 ll->rdp = 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 lp->stats.tx_fifo_errors++;
397
398 printk ("%s: Tx: ERR_BUF|ERR_UFL, restarting\n",
399 dev->name);
400 /* Stop the lance */
401 ll->rap = LE_CSR0;
402 ll->rdp = 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 lp->stats.collisions++;
417
418 /* More than one collision, be optimistic. */
419 if (td->tmd1_bits & LE_T1_EMORE)
420 lp->stats.collisions += 2;
421
422 lp->stats.tx_packets++;
423 }
424
425 j = (j + 1) & lp->tx_ring_mod_mask;
426 }
427 lp->tx_old = j;
428 ll->rdp = LE_C0_TINT | LE_C0_INEA;
429 return 0;
430 }
431
432 static irqreturn_t
433 lance_interrupt (int irq, void *dev_id, struct pt_regs *regs)
434 {
435 struct net_device *dev;
436 struct lance_private *lp;
437 volatile struct lance_regs *ll;
438 int csr0;
439
440 dev = (struct net_device *) dev_id;
441
442 lp = (struct lance_private *) dev->priv;
443 ll = lp->ll;
444
445 ll->rap = LE_CSR0; /* LANCE Controller Status */
446 csr0 = ll->rdp;
447
448 if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */
449 return IRQ_NONE; /* been generated by the Lance. */
450
451 /* Acknowledge all the interrupt sources ASAP */
452 ll->rdp = csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|
453 LE_C0_INIT);
454
455 if ((csr0 & LE_C0_ERR)) {
456 /* Clear the error condition */
457 ll->rdp = LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA;
458 }
459
460 if (csr0 & LE_C0_RINT)
461 lance_rx (dev);
462
463 if (csr0 & LE_C0_TINT)
464 lance_tx (dev);
465
466 /* Log misc errors. */
467 if (csr0 & LE_C0_BABL)
468 lp->stats.tx_errors++; /* Tx babble. */
469 if (csr0 & LE_C0_MISS)
470 lp->stats.rx_errors++; /* Missed a Rx frame. */
471 if (csr0 & LE_C0_MERR) {
472 printk("%s: Bus master arbitration failure, status %4.4x.\n", dev->name, csr0);
473 /* Restart the chip. */
474 ll->rdp = LE_C0_STRT;
475 }
476
477 if (netif_queue_stopped(dev) && TX_BUFFS_AVAIL > 0)
478 netif_wake_queue(dev);
479
480 ll->rap = LE_CSR0;
481 ll->rdp = LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|
482 LE_C0_IDON|LE_C0_INEA;
483 return IRQ_HANDLED;
484 }
485
486 struct net_device *last_dev = 0;
487
488 static int lance_open (struct net_device *dev)
489 {
490 struct lance_private *lp = (struct lance_private *)dev->priv;
491 volatile struct lance_regs *ll = lp->ll;
492 int ret;
493
494 last_dev = dev;
495
496 /* Stop the Lance */
497 ll->rap = LE_CSR0;
498 ll->rdp = LE_C0_STOP;
499
500 /* Install the Interrupt handler */
501 ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, SA_SHIRQ,
502 dev->name, dev);
503 if (ret) return ret;
504
505 load_csrs (lp);
506 lance_init_ring (dev);
507
508 netif_start_queue(dev);
509
510 return init_restart_lance (lp);
511 }
512
513 static int lance_close (struct net_device *dev)
514 {
515 struct lance_private *lp = (struct lance_private *) dev->priv;
516 volatile struct lance_regs *ll = lp->ll;
517
518 netif_stop_queue(dev);
519 del_timer_sync(&lp->multicast_timer);
520
521 /* Stop the card */
522 ll->rap = LE_CSR0;
523 ll->rdp = LE_C0_STOP;
524
525 free_irq(IRQ_AMIGA_PORTS, dev);
526 return 0;
527 }
528
529 static inline int lance_reset (struct net_device *dev)
530 {
531 struct lance_private *lp = (struct lance_private *)dev->priv;
532 volatile struct lance_regs *ll = lp->ll;
533 int status;
534
535 /* Stop the lance */
536 ll->rap = LE_CSR0;
537 ll->rdp = LE_C0_STOP;
538
539 load_csrs (lp);
540
541 lance_init_ring (dev);
542 dev->trans_start = jiffies;
543 netif_start_queue(dev);
544
545 status = init_restart_lance (lp);
546 #ifdef DEBUG_DRIVER
547 printk ("Lance restart=%d\n", status);
548 #endif
549 return status;
550 }
551
552 static void lance_tx_timeout(struct net_device *dev)
553 {
554 struct lance_private *lp = (struct lance_private *) dev->priv;
555 volatile struct lance_regs *ll = lp->ll;
556
557 printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n",
558 dev->name, ll->rdp);
559 lance_reset(dev);
560 netif_wake_queue(dev);
561 }
562
563 static int lance_start_xmit (struct sk_buff *skb, struct net_device *dev)
564 {
565 struct lance_private *lp = (struct lance_private *)dev->priv;
566 volatile struct lance_regs *ll = lp->ll;
567 volatile struct lance_init_block *ib = lp->init_block;
568 int entry, skblen, len;
569 int status = 0;
570 static int outs;
571 unsigned long flags;
572
573 skblen = skb->len;
574 len = skblen;
575
576 if (len < ETH_ZLEN) {
577 len = ETH_ZLEN;
578 skb = skb_padto(skb, ETH_ZLEN);
579 if (skb == NULL)
580 return 0;
581 }
582
583 local_irq_save(flags);
584
585 if (!TX_BUFFS_AVAIL){
586 local_irq_restore(flags);
587 return -1;
588 }
589
590 #ifdef DEBUG_DRIVER
591 /* dump the packet */
592 {
593 int i;
594
595 for (i = 0; i < 64; i++) {
596 if ((i % 16) == 0)
597 printk ("\n");
598 printk ("%2.2x ", skb->data [i]);
599 }
600 }
601 #endif
602 entry = lp->tx_new & lp->tx_ring_mod_mask;
603 ib->btx_ring [entry].length = (-len) | 0xf000;
604 ib->btx_ring [entry].misc = 0;
605
606 memcpy ((char *)&ib->tx_buf [entry][0], skb->data, skblen);
607
608 /* Clear the slack of the packet, do I need this? */
609 if (len != skblen)
610 memset ((char *) &ib->tx_buf [entry][skblen], 0, len - skblen);
611
612 /* Now, give the packet to the lance */
613 ib->btx_ring [entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN);
614 lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask;
615
616 outs++;
617
618 if (TX_BUFFS_AVAIL <= 0)
619 netif_stop_queue(dev);
620
621 /* Kick the lance: transmit now */
622 ll->rdp = LE_C0_INEA | LE_C0_TDMD;
623 dev->trans_start = jiffies;
624 dev_kfree_skb (skb);
625
626 local_irq_restore(flags);
627
628 return status;
629 }
630
631 static struct net_device_stats *lance_get_stats (struct net_device *dev)
632 {
633 struct lance_private *lp = (struct lance_private *) dev->priv;
634
635 return &lp->stats;
636 }
637
638 /* taken from the depca driver */
639 static void lance_load_multicast (struct net_device *dev)
640 {
641 struct lance_private *lp = (struct lance_private *) dev->priv;
642 volatile struct lance_init_block *ib = lp->init_block;
643 volatile u16 *mcast_table = (u16 *)&ib->filter;
644 struct dev_mc_list *dmi=dev->mc_list;
645 char *addrs;
646 int i;
647 u32 crc;
648
649 /* set all multicast bits */
650 if (dev->flags & IFF_ALLMULTI){
651 ib->filter [0] = 0xffffffff;
652 ib->filter [1] = 0xffffffff;
653 return;
654 }
655 /* clear the multicast filter */
656 ib->filter [0] = 0;
657 ib->filter [1] = 0;
658
659 /* Add addresses */
660 for (i = 0; i < dev->mc_count; i++){
661 addrs = dmi->dmi_addr;
662 dmi = dmi->next;
663
664 /* multicast address? */
665 if (!(*addrs & 1))
666 continue;
667
668 crc = ether_crc_le(6, addrs);
669 crc = crc >> 26;
670 mcast_table [crc >> 4] |= 1 << (crc & 0xf);
671 }
672 return;
673 }
674
675 static void lance_set_multicast (struct net_device *dev)
676 {
677 struct lance_private *lp = (struct lance_private *) dev->priv;
678 volatile struct lance_init_block *ib = lp->init_block;
679 volatile struct lance_regs *ll = lp->ll;
680
681 if (!netif_running(dev))
682 return;
683
684 if (lp->tx_old != lp->tx_new) {
685 mod_timer(&lp->multicast_timer, jiffies + 4);
686 netif_wake_queue(dev);
687 return;
688 }
689
690 netif_stop_queue(dev);
691
692 ll->rap = LE_CSR0;
693 ll->rdp = LE_C0_STOP;
694 lance_init_ring (dev);
695
696 if (dev->flags & IFF_PROMISC) {
697 ib->mode |= LE_MO_PROM;
698 } else {
699 ib->mode &= ~LE_MO_PROM;
700 lance_load_multicast (dev);
701 }
702 load_csrs (lp);
703 init_restart_lance (lp);
704 netif_wake_queue(dev);
705 }
706
707 static int __init a2065_probe(void)
708 {
709 struct zorro_dev *z = NULL;
710 struct net_device *dev;
711 struct lance_private *priv;
712 int res = -ENODEV;
713
714 while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
715 unsigned long board, base_addr, mem_start;
716 struct resource *r1, *r2;
717 int is_cbm;
718
719 if (z->id == ZORRO_PROD_CBM_A2065_1 ||
720 z->id == ZORRO_PROD_CBM_A2065_2)
721 is_cbm = 1;
722 else if (z->id == ZORRO_PROD_AMERISTAR_A2065)
723 is_cbm = 0;
724 else
725 continue;
726
727 board = z->resource.start;
728 base_addr = board+A2065_LANCE;
729 mem_start = board+A2065_RAM;
730
731 r1 = request_mem_region(base_addr, sizeof(struct lance_regs),
732 "Am7990");
733 if (!r1) continue;
734 r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM");
735 if (!r2) {
736 release_resource(r1);
737 continue;
738 }
739
740 dev = init_etherdev(NULL, sizeof(struct lance_private));
741
742 if (dev == NULL) {
743 release_resource(r1);
744 release_resource(r2);
745 return -ENOMEM;
746 }
747 SET_MODULE_OWNER(dev);
748 priv = dev->priv;
749
750 r1->name = dev->name;
751 r2->name = dev->name;
752
753 priv->dev = dev;
754 dev->dev_addr[0] = 0x00;
755 if (is_cbm) { /* Commodore */
756 dev->dev_addr[1] = 0x80;
757 dev->dev_addr[2] = 0x10;
758 } else { /* Ameristar */
759 dev->dev_addr[1] = 0x00;
760 dev->dev_addr[2] = 0x9f;
761 }
762 dev->dev_addr[3] = (z->rom.er_SerialNumber>>16) & 0xff;
763 dev->dev_addr[4] = (z->rom.er_SerialNumber>>8) & 0xff;
764 dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff;
765 printk("%s: A2065 at 0x%08lx, Ethernet Address "
766 "%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, board,
767 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
768 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
769
770 dev->base_addr = ZTWO_VADDR(base_addr);
771 dev->mem_start = ZTWO_VADDR(mem_start);
772 dev->mem_end = dev->mem_start+A2065_RAM_SIZE;
773
774 priv->ll = (volatile struct lance_regs *)dev->base_addr;
775 priv->init_block = (struct lance_init_block *)dev->mem_start;
776 priv->lance_init_block = (struct lance_init_block *)A2065_RAM;
777 priv->auto_select = 0;
778 priv->busmaster_regval = LE_C3_BSWP;
779
780 priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS;
781 priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS;
782 priv->rx_ring_mod_mask = RX_RING_MOD_MASK;
783 priv->tx_ring_mod_mask = TX_RING_MOD_MASK;
784
785 dev->open = &lance_open;
786 dev->stop = &lance_close;
787 dev->hard_start_xmit = &lance_start_xmit;
788 dev->tx_timeout = &lance_tx_timeout;
789 dev->watchdog_timeo = 5*HZ;
790 dev->get_stats = &lance_get_stats;
791 dev->set_multicast_list = &lance_set_multicast;
792 dev->dma = 0;
793
794 #ifdef MODULE
795 priv->next_module = root_a2065_dev;
796 root_a2065_dev = priv;
797 #endif
798 ether_setup(dev);
799 init_timer(&priv->multicast_timer);
800 priv->multicast_timer.data = (unsigned long) dev;
801 priv->multicast_timer.function =
802 (void (*)(unsigned long)) &lance_set_multicast;
803
804 res = 0;
805 }
806 return res;
807 }
808
809
810 static void __exit a2065_cleanup(void)
811 {
812 #ifdef MODULE
813 struct lance_private *next;
814 struct net_device *dev;
815
816 while (root_a2065_dev) {
817 next = root_a2065_dev->next_module;
818 dev = root_a2065_dev->dev;
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 kfree(dev);
824 root_a2065_dev = next;
825 }
826 #endif
827 }
828
829 module_init(a2065_probe);
830 module_exit(a2065_cleanup);
831 MODULE_LICENSE("GPL");
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