projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[deliverable/linux.git] / drivers / net / a2065.c
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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
41
42 /*#define DEBUG*/
43 /*#define TEST_HITS*/
44
45 #include <linux/errno.h>
46 #include <linux/netdevice.h>
47 #include <linux/etherdevice.h>
48 #include <linux/module.h>
49 #include <linux/stddef.h>
50 #include <linux/kernel.h>
51 #include <linux/interrupt.h>
52 #include <linux/ioport.h>
53 #include <linux/skbuff.h>
54 #include <linux/string.h>
55 #include <linux/init.h>
56 #include <linux/crc32.h>
57 #include <linux/zorro.h>
58 #include <linux/bitops.h>
59
60 #include <asm/irq.h>
61 #include <asm/amigaints.h>
62 #include <asm/amigahw.h>
63
64 #include "a2065.h"
65
66 /* Transmit/Receive Ring Definitions */
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 /* Layout of the Lance's RAM Buffer */
82
83 struct lance_init_block {
84 unsigned short mode; /* Pre-set mode (reg. 15) */
85 unsigned char phys_addr[6]; /* Physical ethernet address */
86 unsigned filter[2]; /* Multicast filter. */
87
88 /* Receive and transmit ring base, along with extra bits. */
89 unsigned short rx_ptr; /* receive descriptor addr */
90 unsigned short rx_len; /* receive len and high addr */
91 unsigned short tx_ptr; /* transmit descriptor addr */
92 unsigned short tx_len; /* transmit len and high addr */
93
94 /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */
95 struct lance_rx_desc brx_ring[RX_RING_SIZE];
96 struct lance_tx_desc btx_ring[TX_RING_SIZE];
97
98 char rx_buf[RX_RING_SIZE][RX_BUFF_SIZE];
99 char tx_buf[TX_RING_SIZE][TX_BUFF_SIZE];
100 };
101
102 /* Private Device Data */
103
104 struct lance_private {
105 char *name;
106 volatile struct lance_regs *ll;
107 volatile struct lance_init_block *init_block; /* Hosts view */
108 volatile struct lance_init_block *lance_init_block; /* Lance view */
109
110 int rx_new, tx_new;
111 int rx_old, tx_old;
112
113 int lance_log_rx_bufs, lance_log_tx_bufs;
114 int rx_ring_mod_mask, tx_ring_mod_mask;
115
116 int tpe; /* cable-selection is TPE */
117 int auto_select; /* cable-selection by carrier */
118 unsigned short busmaster_regval;
119
120 #ifdef CONFIG_SUNLANCE
121 struct Linux_SBus_DMA *ledma; /* if set this points to ledma and arch=4m */
122 int burst_sizes; /* ledma SBus burst sizes */
123 #endif
124 struct timer_list multicast_timer;
125 };
126
127 #define LANCE_ADDR(x) ((int)(x) & ~0xff000000)
128
129 /* Load the CSR registers */
130 static void load_csrs(struct lance_private *lp)
131 {
132 volatile struct lance_regs *ll = lp->ll;
133 volatile struct lance_init_block *aib = lp->lance_init_block;
134 int leptr = LANCE_ADDR(aib);
135
136 ll->rap = LE_CSR1;
137 ll->rdp = (leptr & 0xFFFF);
138 ll->rap = LE_CSR2;
139 ll->rdp = leptr >> 16;
140 ll->rap = LE_CSR3;
141 ll->rdp = lp->busmaster_regval;
142
143 /* Point back to csr0 */
144 ll->rap = LE_CSR0;
145 }
146
147 /* Setup the Lance Rx and Tx rings */
148 static void lance_init_ring(struct net_device *dev)
149 {
150 struct lance_private *lp = netdev_priv(dev);
151 volatile struct lance_init_block *ib = lp->init_block;
152 volatile struct lance_init_block *aib = lp->lance_init_block;
153 /* for LANCE_ADDR computations */
154 int leptr;
155 int i;
156
157 /* Lock out other processes while setting up hardware */
158 netif_stop_queue(dev);
159 lp->rx_new = lp->tx_new = 0;
160 lp->rx_old = lp->tx_old = 0;
161
162 ib->mode = 0;
163
164 /* Copy the ethernet address to the lance init block
165 * Note that on the sparc you need to swap the ethernet address.
166 */
167 ib->phys_addr[0] = dev->dev_addr[1];
168 ib->phys_addr[1] = dev->dev_addr[0];
169 ib->phys_addr[2] = dev->dev_addr[3];
170 ib->phys_addr[3] = dev->dev_addr[2];
171 ib->phys_addr[4] = dev->dev_addr[5];
172 ib->phys_addr[5] = dev->dev_addr[4];
173
174 /* Setup the Tx ring entries */
175 netdev_dbg(dev, "TX rings:\n");
176 for (i = 0; i <= 1 << lp->lance_log_tx_bufs; i++) {
177 leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
178 ib->btx_ring[i].tmd0 = leptr;
179 ib->btx_ring[i].tmd1_hadr = leptr >> 16;
180 ib->btx_ring[i].tmd1_bits = 0;
181 ib->btx_ring[i].length = 0xf000; /* The ones required by tmd2 */
182 ib->btx_ring[i].misc = 0;
183 if (i < 3)
184 netdev_dbg(dev, "%d: 0x%08x\n", i, leptr);
185 }
186
187 /* Setup the Rx ring entries */
188 netdev_dbg(dev, "RX rings:\n");
189 for (i = 0; i < 1 << lp->lance_log_rx_bufs; i++) {
190 leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
191
192 ib->brx_ring[i].rmd0 = leptr;
193 ib->brx_ring[i].rmd1_hadr = leptr >> 16;
194 ib->brx_ring[i].rmd1_bits = LE_R1_OWN;
195 ib->brx_ring[i].length = -RX_BUFF_SIZE | 0xf000;
196 ib->brx_ring[i].mblength = 0;
197 if (i < 3)
198 netdev_dbg(dev, "%d: 0x%08x\n", i, leptr);
199 }
200
201 /* Setup the initialization block */
202
203 /* Setup rx descriptor pointer */
204 leptr = LANCE_ADDR(&aib->brx_ring);
205 ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
206 ib->rx_ptr = leptr;
207 netdev_dbg(dev, "RX ptr: %08x\n", leptr);
208
209 /* Setup tx descriptor pointer */
210 leptr = LANCE_ADDR(&aib->btx_ring);
211 ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
212 ib->tx_ptr = leptr;
213 netdev_dbg(dev, "TX ptr: %08x\n", leptr);
214
215 /* Clear the multicast filter */
216 ib->filter[0] = 0;
217 ib->filter[1] = 0;
218 }
219
220 static int init_restart_lance(struct lance_private *lp)
221 {
222 volatile struct lance_regs *ll = lp->ll;
223 int i;
224
225 ll->rap = LE_CSR0;
226 ll->rdp = LE_C0_INIT;
227
228 /* Wait for the lance to complete initialization */
229 for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++)
230 barrier();
231 if ((i == 100) || (ll->rdp & LE_C0_ERR)) {
232 pr_err("unopened after %d ticks, csr0=%04x\n", i, ll->rdp);
233 return -EIO;
234 }
235
236 /* Clear IDON by writing a "1", enable interrupts and start lance */
237 ll->rdp = LE_C0_IDON;
238 ll->rdp = LE_C0_INEA | LE_C0_STRT;
239
240 return 0;
241 }
242
243 static int lance_rx(struct net_device *dev)
244 {
245 struct lance_private *lp = netdev_priv(dev);
246 volatile struct lance_init_block *ib = lp->init_block;
247 volatile struct lance_regs *ll = lp->ll;
248 volatile struct lance_rx_desc *rd;
249 unsigned char bits;
250
251 #ifdef TEST_HITS
252 int i;
253 char buf[RX_RING_SIZE + 1];
254
255 for (i = 0; i < RX_RING_SIZE; i++) {
256 char r1_own = ib->brx_ring[i].rmd1_bits & LE_R1_OWN;
257 if (i == lp->rx_new)
258 buf[i] = r1_own ? '_' : 'X';
259 else
260 buf[i] = r1_own ? '.' : '1';
261 }
262 buf[RX_RING_SIZE] = 0;
263
264 pr_debug("RxRing TestHits: [%s]\n", buf);
265 #endif
266
267 ll->rdp = LE_C0_RINT | LE_C0_INEA;
268 for (rd = &ib->brx_ring[lp->rx_new];
269 !((bits = rd->rmd1_bits) & LE_R1_OWN);
270 rd = &ib->brx_ring[lp->rx_new]) {
271
272 /* We got an incomplete frame? */
273 if ((bits & LE_R1_POK) != LE_R1_POK) {
274 dev->stats.rx_over_errors++;
275 dev->stats.rx_errors++;
276 continue;
277 } else if (bits & LE_R1_ERR) {
278 /* Count only the end frame as a rx error,
279 * not the beginning
280 */
281 if (bits & LE_R1_BUF)
282 dev->stats.rx_fifo_errors++;
283 if (bits & LE_R1_CRC)
284 dev->stats.rx_crc_errors++;
285 if (bits & LE_R1_OFL)
286 dev->stats.rx_over_errors++;
287 if (bits & LE_R1_FRA)
288 dev->stats.rx_frame_errors++;
289 if (bits & LE_R1_EOP)
290 dev->stats.rx_errors++;
291 } else {
292 int len = (rd->mblength & 0xfff) - 4;
293 struct sk_buff *skb = dev_alloc_skb(len + 2);
294
295 if (!skb) {
296 netdev_warn(dev, "Memory squeeze, deferring packet\n");
297 dev->stats.rx_dropped++;
298 rd->mblength = 0;
299 rd->rmd1_bits = LE_R1_OWN;
300 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
301 return 0;
302 }
303
304 skb_reserve(skb, 2); /* 16 byte align */
305 skb_put(skb, len); /* make room */
306 skb_copy_to_linear_data(skb,
307 (unsigned char *)&ib->rx_buf[lp->rx_new][0],
308 len);
309 skb->protocol = eth_type_trans(skb, dev);
310 netif_rx(skb);
311 dev->stats.rx_packets++;
312 dev->stats.rx_bytes += len;
313 }
314
315 /* Return the packet to the pool */
316 rd->mblength = 0;
317 rd->rmd1_bits = LE_R1_OWN;
318 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
319 }
320 return 0;
321 }
322
323 static int lance_tx(struct net_device *dev)
324 {
325 struct lance_private *lp = netdev_priv(dev);
326 volatile struct lance_init_block *ib = lp->init_block;
327 volatile struct lance_regs *ll = lp->ll;
328 volatile struct lance_tx_desc *td;
329 int i, j;
330 int status;
331
332 /* csr0 is 2f3 */
333 ll->rdp = LE_C0_TINT | LE_C0_INEA;
334 /* csr0 is 73 */
335
336 j = lp->tx_old;
337 for (i = j; i != lp->tx_new; i = j) {
338 td = &ib->btx_ring[i];
339
340 /* If we hit a packet not owned by us, stop */
341 if (td->tmd1_bits & LE_T1_OWN)
342 break;
343
344 if (td->tmd1_bits & LE_T1_ERR) {
345 status = td->misc;
346
347 dev->stats.tx_errors++;
348 if (status & LE_T3_RTY)
349 dev->stats.tx_aborted_errors++;
350 if (status & LE_T3_LCOL)
351 dev->stats.tx_window_errors++;
352
353 if (status & LE_T3_CLOS) {
354 dev->stats.tx_carrier_errors++;
355 if (lp->auto_select) {
356 lp->tpe = 1 - lp->tpe;
357 netdev_err(dev, "Carrier Lost, trying %s\n",
358 lp->tpe ? "TPE" : "AUI");
359 /* Stop the lance */
360 ll->rap = LE_CSR0;
361 ll->rdp = LE_C0_STOP;
362 lance_init_ring(dev);
363 load_csrs(lp);
364 init_restart_lance(lp);
365 return 0;
366 }
367 }
368
369 /* buffer errors and underflows turn off
370 * the transmitter, so restart the adapter
371 */
372 if (status & (LE_T3_BUF | LE_T3_UFL)) {
373 dev->stats.tx_fifo_errors++;
374
375 netdev_err(dev, "Tx: ERR_BUF|ERR_UFL, restarting\n");
376 /* Stop the lance */
377 ll->rap = LE_CSR0;
378 ll->rdp = LE_C0_STOP;
379 lance_init_ring(dev);
380 load_csrs(lp);
381 init_restart_lance(lp);
382 return 0;
383 }
384 } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
385 /* So we don't count the packet more than once. */
386 td->tmd1_bits &= ~(LE_T1_POK);
387
388 /* One collision before packet was sent. */
389 if (td->tmd1_bits & LE_T1_EONE)
390 dev->stats.collisions++;
391
392 /* More than one collision, be optimistic. */
393 if (td->tmd1_bits & LE_T1_EMORE)
394 dev->stats.collisions += 2;
395
396 dev->stats.tx_packets++;
397 }
398
399 j = (j + 1) & lp->tx_ring_mod_mask;
400 }
401 lp->tx_old = j;
402 ll->rdp = LE_C0_TINT | LE_C0_INEA;
403 return 0;
404 }
405
406 static int lance_tx_buffs_avail(struct lance_private *lp)
407 {
408 if (lp->tx_old <= lp->tx_new)
409 return lp->tx_old + lp->tx_ring_mod_mask - lp->tx_new;
410 return lp->tx_old - lp->tx_new - 1;
411 }
412
413 static irqreturn_t lance_interrupt(int irq, void *dev_id)
414 {
415 struct net_device *dev = dev_id;
416 struct lance_private *lp = netdev_priv(dev);
417 volatile struct lance_regs *ll = lp->ll;
418 int csr0;
419
420 ll->rap = LE_CSR0; /* LANCE Controller Status */
421 csr0 = ll->rdp;
422
423 if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */
424 return IRQ_NONE; /* been generated by the Lance. */
425
426 /* Acknowledge all the interrupt sources ASAP */
427 ll->rdp = csr0 & ~(LE_C0_INEA | LE_C0_TDMD | LE_C0_STOP | LE_C0_STRT |
428 LE_C0_INIT);
429
430 if (csr0 & LE_C0_ERR) {
431 /* Clear the error condition */
432 ll->rdp = LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | LE_C0_INEA;
433 }
434
435 if (csr0 & LE_C0_RINT)
436 lance_rx(dev);
437
438 if (csr0 & LE_C0_TINT)
439 lance_tx(dev);
440
441 /* Log misc errors. */
442 if (csr0 & LE_C0_BABL)
443 dev->stats.tx_errors++; /* Tx babble. */
444 if (csr0 & LE_C0_MISS)
445 dev->stats.rx_errors++; /* Missed a Rx frame. */
446 if (csr0 & LE_C0_MERR) {
447 netdev_err(dev, "Bus master arbitration failure, status %04x\n",
448 csr0);
449 /* Restart the chip. */
450 ll->rdp = LE_C0_STRT;
451 }
452
453 if (netif_queue_stopped(dev) && lance_tx_buffs_avail(lp) > 0)
454 netif_wake_queue(dev);
455
456 ll->rap = LE_CSR0;
457 ll->rdp = (LE_C0_BABL | LE_C0_CERR | LE_C0_MISS | LE_C0_MERR |
458 LE_C0_IDON | LE_C0_INEA);
459 return IRQ_HANDLED;
460 }
461
462 static int lance_open(struct net_device *dev)
463 {
464 struct lance_private *lp = netdev_priv(dev);
465 volatile struct lance_regs *ll = lp->ll;
466 int ret;
467
468 /* Stop the Lance */
469 ll->rap = LE_CSR0;
470 ll->rdp = LE_C0_STOP;
471
472 /* Install the Interrupt handler */
473 ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED,
474 dev->name, dev);
475 if (ret)
476 return ret;
477
478 load_csrs(lp);
479 lance_init_ring(dev);
480
481 netif_start_queue(dev);
482
483 return init_restart_lance(lp);
484 }
485
486 static int lance_close(struct net_device *dev)
487 {
488 struct lance_private *lp = netdev_priv(dev);
489 volatile struct lance_regs *ll = lp->ll;
490
491 netif_stop_queue(dev);
492 del_timer_sync(&lp->multicast_timer);
493
494 /* Stop the card */
495 ll->rap = LE_CSR0;
496 ll->rdp = LE_C0_STOP;
497
498 free_irq(IRQ_AMIGA_PORTS, dev);
499 return 0;
500 }
501
502 static inline int lance_reset(struct net_device *dev)
503 {
504 struct lance_private *lp = netdev_priv(dev);
505 volatile struct lance_regs *ll = lp->ll;
506 int status;
507
508 /* Stop the lance */
509 ll->rap = LE_CSR0;
510 ll->rdp = LE_C0_STOP;
511
512 load_csrs(lp);
513
514 lance_init_ring(dev);
515 dev->trans_start = jiffies; /* prevent tx timeout */
516 netif_start_queue(dev);
517
518 status = init_restart_lance(lp);
519 netdev_dbg(dev, "Lance restart=%d\n", status);
520
521 return status;
522 }
523
524 static void lance_tx_timeout(struct net_device *dev)
525 {
526 struct lance_private *lp = netdev_priv(dev);
527 volatile struct lance_regs *ll = lp->ll;
528
529 netdev_err(dev, "transmit timed out, status %04x, reset\n", ll->rdp);
530 lance_reset(dev);
531 netif_wake_queue(dev);
532 }
533
534 static netdev_tx_t lance_start_xmit(struct sk_buff *skb,
535 struct net_device *dev)
536 {
537 struct lance_private *lp = netdev_priv(dev);
538 volatile struct lance_regs *ll = lp->ll;
539 volatile struct lance_init_block *ib = lp->init_block;
540 int entry, skblen;
541 int status = NETDEV_TX_OK;
542 unsigned long flags;
543
544 if (skb_padto(skb, ETH_ZLEN))
545 return NETDEV_TX_OK;
546 skblen = max_t(unsigned, skb->len, ETH_ZLEN);
547
548 local_irq_save(flags);
549
550 if (!lance_tx_buffs_avail(lp)) {
551 local_irq_restore(flags);
552 return NETDEV_TX_LOCKED;
553 }
554
555 #ifdef DEBUG
556 /* dump the packet */
557 print_hex_dump(KERN_DEBUG, "skb->data: ", DUMP_PREFIX_NONE,
558 16, 1, skb->data, 64, true);
559 #endif
560 entry = lp->tx_new & lp->tx_ring_mod_mask;
561 ib->btx_ring[entry].length = (-skblen) | 0xf000;
562 ib->btx_ring[entry].misc = 0;
563
564 skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen);
565
566 /* Now, give the packet to the lance */
567 ib->btx_ring[entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN);
568 lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask;
569 dev->stats.tx_bytes += skblen;
570
571 if (lance_tx_buffs_avail(lp) <= 0)
572 netif_stop_queue(dev);
573
574 /* Kick the lance: transmit now */
575 ll->rdp = LE_C0_INEA | LE_C0_TDMD;
576 dev_kfree_skb(skb);
577
578 local_irq_restore(flags);
579
580 return status;
581 }
582
583 /* taken from the depca driver */
584 static void lance_load_multicast(struct net_device *dev)
585 {
586 struct lance_private *lp = netdev_priv(dev);
587 volatile struct lance_init_block *ib = lp->init_block;
588 volatile u16 *mcast_table = (u16 *)&ib->filter;
589 struct netdev_hw_addr *ha;
590 char *addrs;
591 u32 crc;
592
593 /* set all multicast bits */
594 if (dev->flags & IFF_ALLMULTI) {
595 ib->filter[0] = 0xffffffff;
596 ib->filter[1] = 0xffffffff;
597 return;
598 }
599 /* clear the multicast filter */
600 ib->filter[0] = 0;
601 ib->filter[1] = 0;
602
603 /* Add addresses */
604 netdev_for_each_mc_addr(ha, dev) {
605 addrs = ha->addr;
606
607 /* multicast address? */
608 if (!(*addrs & 1))
609 continue;
610
611 crc = ether_crc_le(6, addrs);
612 crc = crc >> 26;
613 mcast_table[crc >> 4] |= 1 << (crc & 0xf);
614 }
615 }
616
617 static void lance_set_multicast(struct net_device *dev)
618 {
619 struct lance_private *lp = netdev_priv(dev);
620 volatile struct lance_init_block *ib = lp->init_block;
621 volatile struct lance_regs *ll = lp->ll;
622
623 if (!netif_running(dev))
624 return;
625
626 if (lp->tx_old != lp->tx_new) {
627 mod_timer(&lp->multicast_timer, jiffies + 4);
628 netif_wake_queue(dev);
629 return;
630 }
631
632 netif_stop_queue(dev);
633
634 ll->rap = LE_CSR0;
635 ll->rdp = LE_C0_STOP;
636 lance_init_ring(dev);
637
638 if (dev->flags & IFF_PROMISC) {
639 ib->mode |= LE_MO_PROM;
640 } else {
641 ib->mode &= ~LE_MO_PROM;
642 lance_load_multicast(dev);
643 }
644 load_csrs(lp);
645 init_restart_lance(lp);
646 netif_wake_queue(dev);
647 }
648
649 static int __devinit a2065_init_one(struct zorro_dev *z,
650 const struct zorro_device_id *ent);
651 static void __devexit a2065_remove_one(struct zorro_dev *z);
652
653
654 static struct zorro_device_id a2065_zorro_tbl[] __devinitdata = {
655 { ZORRO_PROD_CBM_A2065_1 },
656 { ZORRO_PROD_CBM_A2065_2 },
657 { ZORRO_PROD_AMERISTAR_A2065 },
658 { 0 }
659 };
660 MODULE_DEVICE_TABLE(zorro, a2065_zorro_tbl);
661
662 static struct zorro_driver a2065_driver = {
663 .name = "a2065",
664 .id_table = a2065_zorro_tbl,
665 .probe = a2065_init_one,
666 .remove = __devexit_p(a2065_remove_one),
667 };
668
669 static const struct net_device_ops lance_netdev_ops = {
670 .ndo_open = lance_open,
671 .ndo_stop = lance_close,
672 .ndo_start_xmit = lance_start_xmit,
673 .ndo_tx_timeout = lance_tx_timeout,
674 .ndo_set_multicast_list = lance_set_multicast,
675 .ndo_validate_addr = eth_validate_addr,
676 .ndo_change_mtu = eth_change_mtu,
677 .ndo_set_mac_address = eth_mac_addr,
678 };
679
680 static int __devinit a2065_init_one(struct zorro_dev *z,
681 const struct zorro_device_id *ent)
682 {
683 struct net_device *dev;
684 struct lance_private *priv;
685 unsigned long board = z->resource.start;
686 unsigned long base_addr = board + A2065_LANCE;
687 unsigned long mem_start = board + A2065_RAM;
688 struct resource *r1, *r2;
689 int err;
690
691 r1 = request_mem_region(base_addr, sizeof(struct lance_regs),
692 "Am7990");
693 if (!r1)
694 return -EBUSY;
695 r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM");
696 if (!r2) {
697 release_mem_region(base_addr, sizeof(struct lance_regs));
698 return -EBUSY;
699 }
700
701 dev = alloc_etherdev(sizeof(struct lance_private));
702 if (dev == NULL) {
703 release_mem_region(base_addr, sizeof(struct lance_regs));
704 release_mem_region(mem_start, A2065_RAM_SIZE);
705 return -ENOMEM;
706 }
707
708 priv = netdev_priv(dev);
709
710 r1->name = dev->name;
711 r2->name = dev->name;
712
713 dev->dev_addr[0] = 0x00;
714 if (z->id != ZORRO_PROD_AMERISTAR_A2065) { /* Commodore */
715 dev->dev_addr[1] = 0x80;
716 dev->dev_addr[2] = 0x10;
717 } else { /* Ameristar */
718 dev->dev_addr[1] = 0x00;
719 dev->dev_addr[2] = 0x9f;
720 }
721 dev->dev_addr[3] = (z->rom.er_SerialNumber >> 16) & 0xff;
722 dev->dev_addr[4] = (z->rom.er_SerialNumber >> 8) & 0xff;
723 dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff;
724 dev->base_addr = ZTWO_VADDR(base_addr);
725 dev->mem_start = ZTWO_VADDR(mem_start);
726 dev->mem_end = dev->mem_start + A2065_RAM_SIZE;
727
728 priv->ll = (volatile struct lance_regs *)dev->base_addr;
729 priv->init_block = (struct lance_init_block *)dev->mem_start;
730 priv->lance_init_block = (struct lance_init_block *)A2065_RAM;
731 priv->auto_select = 0;
732 priv->busmaster_regval = LE_C3_BSWP;
733
734 priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS;
735 priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS;
736 priv->rx_ring_mod_mask = RX_RING_MOD_MASK;
737 priv->tx_ring_mod_mask = TX_RING_MOD_MASK;
738
739 dev->netdev_ops = &lance_netdev_ops;
740 dev->watchdog_timeo = 5*HZ;
741 dev->dma = 0;
742
743 init_timer(&priv->multicast_timer);
744 priv->multicast_timer.data = (unsigned long) dev;
745 priv->multicast_timer.function =
746 (void (*)(unsigned long))lance_set_multicast;
747
748 err = register_netdev(dev);
749 if (err) {
750 release_mem_region(base_addr, sizeof(struct lance_regs));
751 release_mem_region(mem_start, A2065_RAM_SIZE);
752 free_netdev(dev);
753 return err;
754 }
755 zorro_set_drvdata(z, dev);
756
757 netdev_info(dev, "A2065 at 0x%08lx, Ethernet Address %pM\n",
758 board, dev->dev_addr);
759
760 return 0;
761 }
762
763
764 static void __devexit a2065_remove_one(struct zorro_dev *z)
765 {
766 struct net_device *dev = zorro_get_drvdata(z);
767
768 unregister_netdev(dev);
769 release_mem_region(ZTWO_PADDR(dev->base_addr),
770 sizeof(struct lance_regs));
771 release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE);
772 free_netdev(dev);
773 }
774
775 static int __init a2065_init_module(void)
776 {
777 return zorro_register_driver(&a2065_driver);
778 }
779
780 static void __exit a2065_cleanup_module(void)
781 {
782 zorro_unregister_driver(&a2065_driver);
783 }
784
785 module_init(a2065_init_module);
786 module_exit(a2065_cleanup_module);
787
788 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.049265 seconds and 6 git commands to generate.