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x86: introduce copy_user_handle_tail() routine
[linux-2.6/mini2440.git] / drivers / net / a2065.c
blob6c5719ae8ccaac3fdaac37fe06fc0aa630c83c89
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>
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
86 struct 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 */
96
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
110 struct 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;
118
119 int lance_log_rx_bufs, lance_log_tx_bufs;
120 int rx_ring_mod_mask, tx_ring_mod_mask;
121
122 int tpe; /* cable-selection is TPE */
123 int auto_select; /* cable-selection by carrier */
124 unsigned short busmaster_regval;
125
126 #ifdef CONFIG_SUNLANCE
127 struct Linux_SBus_DMA *ledma; /* if set this points to ledma and arch=4m */
128 int burst_sizes; /* ledma SBus burst sizes */
129 #endif
130 struct timer_list multicast_timer;
131 };
132
133 #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\
134 lp->tx_old+lp->tx_ring_mod_mask-lp->tx_new:\
135 lp->tx_old - lp->tx_new-1)
136
137
138 #define LANCE_ADDR(x) ((int)(x) & ~0xff000000)
139
140 /* Load the CSR registers */
141 static void load_csrs (struct lance_private *lp)
142 {
143 volatile struct lance_regs *ll = lp->ll;
144 volatile struct lance_init_block *aib = lp->lance_init_block;
145 int leptr;
146
147 leptr = LANCE_ADDR (aib);
148
149 ll->rap = LE_CSR1;
150 ll->rdp = (leptr & 0xFFFF);
151 ll->rap = LE_CSR2;
152 ll->rdp = leptr >> 16;
153 ll->rap = LE_CSR3;
154 ll->rdp = lp->busmaster_regval;
155
156 /* Point back to csr0 */
157 ll->rap = LE_CSR0;
158 }
159
160 #define ZERO 0
161
162 /* Setup the Lance Rx and Tx rings */
163 static void lance_init_ring (struct net_device *dev)
164 {
165 struct lance_private *lp = netdev_priv(dev);
166 volatile struct lance_init_block *ib = lp->init_block;
167 volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */
168 int leptr;
169 int i;
170
171 aib = lp->lance_init_block;
172
173 /* Lock out other processes while setting up hardware */
174 netif_stop_queue(dev);
175 lp->rx_new = lp->tx_new = 0;
176 lp->rx_old = lp->tx_old = 0;
177
178 ib->mode = 0;
179
180 /* Copy the ethernet address to the lance init block
181 * Note that on the sparc you need to swap the ethernet address.
182 */
183 ib->phys_addr [0] = dev->dev_addr [1];
184 ib->phys_addr [1] = dev->dev_addr [0];
185 ib->phys_addr [2] = dev->dev_addr [3];
186 ib->phys_addr [3] = dev->dev_addr [2];
187 ib->phys_addr [4] = dev->dev_addr [5];
188 ib->phys_addr [5] = dev->dev_addr [4];
189
190 if (ZERO)
191 printk(KERN_DEBUG "TX rings:\n");
192
193 /* Setup the Tx ring entries */
194 for (i = 0; i <= (1<<lp->lance_log_tx_bufs); i++) {
195 leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
196 ib->btx_ring [i].tmd0 = leptr;
197 ib->btx_ring [i].tmd1_hadr = leptr >> 16;
198 ib->btx_ring [i].tmd1_bits = 0;
199 ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */
200 ib->btx_ring [i].misc = 0;
201 if (i < 3 && ZERO)
202 printk(KERN_DEBUG "%d: 0x%8.8x\n", i, leptr);
203 }
204
205 /* Setup the Rx ring entries */
206 if (ZERO)
207 printk(KERN_DEBUG "RX rings:\n");
208 for (i = 0; i < (1<<lp->lance_log_rx_bufs); i++) {
209 leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
210
211 ib->brx_ring [i].rmd0 = leptr;
212 ib->brx_ring [i].rmd1_hadr = leptr >> 16;
213 ib->brx_ring [i].rmd1_bits = LE_R1_OWN;
214 ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000;
215 ib->brx_ring [i].mblength = 0;
216 if (i < 3 && ZERO)
217 printk(KERN_DEBUG "%d: 0x%8.8x\n", i, leptr);
218 }
219
220 /* Setup the initialization block */
221
222 /* Setup rx descriptor pointer */
223 leptr = LANCE_ADDR(&aib->brx_ring);
224 ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
225 ib->rx_ptr = leptr;
226 if (ZERO)
227 printk(KERN_DEBUG "RX ptr: %8.8x\n", leptr);
228
229 /* Setup tx descriptor pointer */
230 leptr = LANCE_ADDR(&aib->btx_ring);
231 ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
232 ib->tx_ptr = leptr;
233 if (ZERO)
234 printk(KERN_DEBUG "TX ptr: %8.8x\n", leptr);
235
236 /* Clear the multicast filter */
237 ib->filter [0] = 0;
238 ib->filter [1] = 0;
239 }
240
241 static int init_restart_lance (struct lance_private *lp)
242 {
243 volatile struct lance_regs *ll = lp->ll;
244 int i;
245
246 ll->rap = LE_CSR0;
247 ll->rdp = LE_C0_INIT;
248
249 /* Wait for the lance to complete initialization */
250 for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++)
251 barrier();
252 if ((i == 100) || (ll->rdp & LE_C0_ERR)) {
253 printk(KERN_ERR "LANCE unopened after %d ticks, csr0=%4.4x.\n",
254 i, ll->rdp);
255 return -EIO;
256 }
257
258 /* Clear IDON by writing a "1", enable interrupts and start lance */
259 ll->rdp = LE_C0_IDON;
260 ll->rdp = LE_C0_INEA | LE_C0_STRT;
261
262 return 0;
263 }
264
265 static int lance_rx (struct net_device *dev)
266 {
267 struct lance_private *lp = netdev_priv(dev);
268 volatile struct lance_init_block *ib = lp->init_block;
269 volatile struct lance_regs *ll = lp->ll;
270 volatile struct lance_rx_desc *rd;
271 unsigned char bits;
272
273 #ifdef TEST_HITS
274 int i;
275 printk(KERN_DEBUG "[");
276 for (i = 0; i < RX_RING_SIZE; i++) {
277 if (i == lp->rx_new)
278 printk ("%s",
279 ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "_" : "X");
280 else
281 printk ("%s",
282 ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "." : "1");
283 }
284 printk ("]\n");
285 #endif
286
287 ll->rdp = LE_C0_RINT|LE_C0_INEA;
288 for (rd = &ib->brx_ring [lp->rx_new];
289 !((bits = rd->rmd1_bits) & LE_R1_OWN);
290 rd = &ib->brx_ring [lp->rx_new]) {
291
292 /* We got an incomplete frame? */
293 if ((bits & LE_R1_POK) != LE_R1_POK) {
294 dev->stats.rx_over_errors++;
295 dev->stats.rx_errors++;
296 continue;
297 } else if (bits & LE_R1_ERR) {
298 /* Count only the end frame as a rx error,
299 * not the beginning
300 */
301 if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++;
302 if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++;
303 if (bits & LE_R1_OFL) dev->stats.rx_over_errors++;
304 if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++;
305 if (bits & LE_R1_EOP) dev->stats.rx_errors++;
306 } else {
307 int len = (rd->mblength & 0xfff) - 4;
308 struct sk_buff *skb = dev_alloc_skb (len+2);
309
310 if (!skb) {
311 printk(KERN_WARNING "%s: Memory squeeze, "
312 "deferring packet.\n", dev->name);
313 dev->stats.rx_dropped++;
314 rd->mblength = 0;
315 rd->rmd1_bits = LE_R1_OWN;
316 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
317 return 0;
318 }
319
320 skb_reserve (skb, 2); /* 16 byte align */
321 skb_put (skb, len); /* make room */
322 skb_copy_to_linear_data(skb,
323 (unsigned char *)&(ib->rx_buf [lp->rx_new][0]),
324 len);
325 skb->protocol = eth_type_trans (skb, dev);
326 netif_rx (skb);
327 dev->last_rx = jiffies;
328 dev->stats.rx_packets++;
329 dev->stats.rx_bytes += len;
330 }
331
332 /* Return the packet to the pool */
333 rd->mblength = 0;
334 rd->rmd1_bits = LE_R1_OWN;
335 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
336 }
337 return 0;
338 }
339
340 static int lance_tx (struct net_device *dev)
341 {
342 struct lance_private *lp = netdev_priv(dev);
343 volatile struct lance_init_block *ib = lp->init_block;
344 volatile struct lance_regs *ll = lp->ll;
345 volatile struct lance_tx_desc *td;
346 int i, j;
347 int status;
348
349 /* csr0 is 2f3 */
350 ll->rdp = LE_C0_TINT | LE_C0_INEA;
351 /* csr0 is 73 */
352
353 j = lp->tx_old;
354 for (i = j; i != lp->tx_new; i = j) {
355 td = &ib->btx_ring [i];
356
357 /* If we hit a packet not owned by us, stop */
358 if (td->tmd1_bits & LE_T1_OWN)
359 break;
360
361 if (td->tmd1_bits & LE_T1_ERR) {
362 status = td->misc;
363
364 dev->stats.tx_errors++;
365 if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++;
366 if (status & LE_T3_LCOL) dev->stats.tx_window_errors++;
367
368 if (status & LE_T3_CLOS) {
369 dev->stats.tx_carrier_errors++;
370 if (lp->auto_select) {
371 lp->tpe = 1 - lp->tpe;
372 printk(KERN_ERR "%s: Carrier Lost, "
373 "trying %s\n", dev->name,
374 lp->tpe?"TPE":"AUI");
375 /* Stop the lance */
376 ll->rap = LE_CSR0;
377 ll->rdp = LE_C0_STOP;
378 lance_init_ring (dev);
379 load_csrs (lp);
380 init_restart_lance (lp);
381 return 0;
382 }
383 }
384
385 /* buffer errors and underflows turn off the transmitter */
386 /* Restart the adapter */
387 if (status & (LE_T3_BUF|LE_T3_UFL)) {
388 dev->stats.tx_fifo_errors++;
389
390 printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, "
391 "restarting\n", dev->name);
392 /* Stop the lance */
393 ll->rap = LE_CSR0;
394 ll->rdp = LE_C0_STOP;
395 lance_init_ring (dev);
396 load_csrs (lp);
397 init_restart_lance (lp);
398 return 0;
399 }
400 } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
401 /*
402 * So we don't count the packet more than once.
403 */
404 td->tmd1_bits &= ~(LE_T1_POK);
405
406 /* One collision before packet was sent. */
407 if (td->tmd1_bits & LE_T1_EONE)
408 dev->stats.collisions++;
409
410 /* More than one collision, be optimistic. */
411 if (td->tmd1_bits & LE_T1_EMORE)
412 dev->stats.collisions += 2;
413
414 dev->stats.tx_packets++;
415 }
416
417 j = (j + 1) & lp->tx_ring_mod_mask;
418 }
419 lp->tx_old = j;
420 ll->rdp = LE_C0_TINT | LE_C0_INEA;
421 return 0;
422 }
423
424 static irqreturn_t lance_interrupt (int irq, void *dev_id)
425 {
426 struct net_device *dev;
427 struct lance_private *lp;
428 volatile struct lance_regs *ll;
429 int csr0;
430
431 dev = (struct net_device *) dev_id;
432
433 lp = netdev_priv(dev);
434 ll = lp->ll;
435
436 ll->rap = LE_CSR0; /* LANCE Controller Status */
437 csr0 = ll->rdp;
438
439 if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */
440 return IRQ_NONE; /* been generated by the Lance. */
441
442 /* Acknowledge all the interrupt sources ASAP */
443 ll->rdp = csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|
444 LE_C0_INIT);
445
446 if ((csr0 & LE_C0_ERR)) {
447 /* Clear the error condition */
448 ll->rdp = LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA;
449 }
450
451 if (csr0 & LE_C0_RINT)
452 lance_rx (dev);
453
454 if (csr0 & LE_C0_TINT)
455 lance_tx (dev);
456
457 /* Log misc errors. */
458 if (csr0 & LE_C0_BABL)
459 dev->stats.tx_errors++; /* Tx babble. */
460 if (csr0 & LE_C0_MISS)
461 dev->stats.rx_errors++; /* Missed a Rx frame. */
462 if (csr0 & LE_C0_MERR) {
463 printk(KERN_ERR "%s: Bus master arbitration failure, status "
464 "%4.4x.\n", dev->name, csr0);
465 /* Restart the chip. */
466 ll->rdp = LE_C0_STRT;
467 }
468
469 if (netif_queue_stopped(dev) && TX_BUFFS_AVAIL > 0)
470 netif_wake_queue(dev);
471
472 ll->rap = LE_CSR0;
473 ll->rdp = LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|
474 LE_C0_IDON|LE_C0_INEA;
475 return IRQ_HANDLED;
476 }
477
478 struct net_device *last_dev;
479
480 static int lance_open (struct net_device *dev)
481 {
482 struct lance_private *lp = netdev_priv(dev);
483 volatile struct lance_regs *ll = lp->ll;
484 int ret;
485
486 last_dev = dev;
487
488 /* Stop the Lance */
489 ll->rap = LE_CSR0;
490 ll->rdp = LE_C0_STOP;
491
492 /* Install the Interrupt handler */
493 ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED,
494 dev->name, dev);
495 if (ret) return ret;
496
497 load_csrs (lp);
498 lance_init_ring (dev);
499
500 netif_start_queue(dev);
501
502 return init_restart_lance (lp);
503 }
504
505 static int lance_close (struct net_device *dev)
506 {
507 struct lance_private *lp = netdev_priv(dev);
508 volatile struct lance_regs *ll = lp->ll;
509
510 netif_stop_queue(dev);
511 del_timer_sync(&lp->multicast_timer);
512
513 /* Stop the card */
514 ll->rap = LE_CSR0;
515 ll->rdp = LE_C0_STOP;
516
517 free_irq(IRQ_AMIGA_PORTS, dev);
518 return 0;
519 }
520
521 static inline int lance_reset (struct net_device *dev)
522 {
523 struct lance_private *lp = netdev_priv(dev);
524 volatile struct lance_regs *ll = lp->ll;
525 int status;
526
527 /* Stop the lance */
528 ll->rap = LE_CSR0;
529 ll->rdp = LE_C0_STOP;
530
531 load_csrs (lp);
532
533 lance_init_ring (dev);
534 dev->trans_start = jiffies;
535 netif_start_queue(dev);
536
537 status = init_restart_lance (lp);
538 #ifdef DEBUG_DRIVER
539 printk(KERN_DEBUG "Lance restart=%d\n", status);
540 #endif
541 return status;
542 }
543
544 static void lance_tx_timeout(struct net_device *dev)
545 {
546 struct lance_private *lp = netdev_priv(dev);
547 volatile struct lance_regs *ll = lp->ll;
548
549 printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n",
550 dev->name, ll->rdp);
551 lance_reset(dev);
552 netif_wake_queue(dev);
553 }
554
555 static int lance_start_xmit (struct sk_buff *skb, struct net_device *dev)
556 {
557 struct lance_private *lp = netdev_priv(dev);
558 volatile struct lance_regs *ll = lp->ll;
559 volatile struct lance_init_block *ib = lp->init_block;
560 int entry, skblen, len;
561 int status = 0;
562 unsigned long flags;
563
564 skblen = skb->len;
565 len = skblen;
566
567 if (len < ETH_ZLEN) {
568 len = ETH_ZLEN;
569 if (skb_padto(skb, ETH_ZLEN))
570 return 0;
571 }
572
573 local_irq_save(flags);
574
575 if (!TX_BUFFS_AVAIL){
576 local_irq_restore(flags);
577 return -1;
578 }
579
580 #ifdef DEBUG_DRIVER
581 /* dump the packet */
582 {
583 int i;
584
585 for (i = 0; i < 64; i++) {
586 if ((i % 16) == 0)
587 printk("\n" KERN_DEBUG);
588 printk ("%2.2x ", skb->data [i]);
589 }
590 printk("\n");
591 }
592 #endif
593 entry = lp->tx_new & lp->tx_ring_mod_mask;
594 ib->btx_ring [entry].length = (-len) | 0xf000;
595 ib->btx_ring [entry].misc = 0;
596
597 skb_copy_from_linear_data(skb, (void *)&ib->tx_buf [entry][0], skblen);
598
599 /* Clear the slack of the packet, do I need this? */
600 if (len != skblen)
601 memset ((void *) &ib->tx_buf [entry][skblen], 0, len - skblen);
602
603 /* Now, give the packet to the lance */
604 ib->btx_ring [entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN);
605 lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask;
606 dev->stats.tx_bytes += skblen;
607
608 if (TX_BUFFS_AVAIL <= 0)
609 netif_stop_queue(dev);
610
611 /* Kick the lance: transmit now */
612 ll->rdp = LE_C0_INEA | LE_C0_TDMD;
613 dev->trans_start = jiffies;
614 dev_kfree_skb (skb);
615
616 local_irq_restore(flags);
617
618 return status;
619 }
620
621 /* taken from the depca driver */
622 static void lance_load_multicast (struct net_device *dev)
623 {
624 struct lance_private *lp = netdev_priv(dev);
625 volatile struct lance_init_block *ib = lp->init_block;
626 volatile u16 *mcast_table = (u16 *)&ib->filter;
627 struct dev_mc_list *dmi=dev->mc_list;
628 char *addrs;
629 int i;
630 u32 crc;
631
632 /* set all multicast bits */
633 if (dev->flags & IFF_ALLMULTI){
634 ib->filter [0] = 0xffffffff;
635 ib->filter [1] = 0xffffffff;
636 return;
637 }
638 /* clear the multicast filter */
639 ib->filter [0] = 0;
640 ib->filter [1] = 0;
641
642 /* Add addresses */
643 for (i = 0; i < dev->mc_count; i++){
644 addrs = dmi->dmi_addr;
645 dmi = dmi->next;
646
647 /* multicast address? */
648 if (!(*addrs & 1))
649 continue;
650
651 crc = ether_crc_le(6, addrs);
652 crc = crc >> 26;
653 mcast_table [crc >> 4] |= 1 << (crc & 0xf);
654 }
655 return;
656 }
657
658 static void lance_set_multicast (struct net_device *dev)
659 {
660 struct lance_private *lp = netdev_priv(dev);
661 volatile struct lance_init_block *ib = lp->init_block;
662 volatile struct lance_regs *ll = lp->ll;
663
664 if (!netif_running(dev))
665 return;
666
667 if (lp->tx_old != lp->tx_new) {
668 mod_timer(&lp->multicast_timer, jiffies + 4);
669 netif_wake_queue(dev);
670 return;
671 }
672
673 netif_stop_queue(dev);
674
675 ll->rap = LE_CSR0;
676 ll->rdp = LE_C0_STOP;
677 lance_init_ring (dev);
678
679 if (dev->flags & IFF_PROMISC) {
680 ib->mode |= LE_MO_PROM;
681 } else {
682 ib->mode &= ~LE_MO_PROM;
683 lance_load_multicast (dev);
684 }
685 load_csrs (lp);
686 init_restart_lance (lp);
687 netif_wake_queue(dev);
688 }
689
690 static int __devinit a2065_init_one(struct zorro_dev *z,
691 const struct zorro_device_id *ent);
692 static void __devexit a2065_remove_one(struct zorro_dev *z);
693
694
695 static struct zorro_device_id a2065_zorro_tbl[] __devinitdata = {
696 { ZORRO_PROD_CBM_A2065_1 },
697 { ZORRO_PROD_CBM_A2065_2 },
698 { ZORRO_PROD_AMERISTAR_A2065 },
699 { 0 }
700 };
701
702 static struct zorro_driver a2065_driver = {
703 .name = "a2065",
704 .id_table = a2065_zorro_tbl,
705 .probe = a2065_init_one,
706 .remove = __devexit_p(a2065_remove_one),
707 };
708
709 static int __devinit a2065_init_one(struct zorro_dev *z,
710 const struct zorro_device_id *ent)
711 {
712 struct net_device *dev;
713 struct lance_private *priv;
714 unsigned long board, base_addr, mem_start;
715 struct resource *r1, *r2;
716 int err;
717 DECLARE_MAC_BUF(mac);
718
719 board = z->resource.start;
720 base_addr = board+A2065_LANCE;
721 mem_start = board+A2065_RAM;
722
723 r1 = request_mem_region(base_addr, sizeof(struct lance_regs),
724 "Am7990");
725 if (!r1)
726 return -EBUSY;
727 r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM");
728 if (!r2) {
729 release_resource(r1);
730 return -EBUSY;
731 }
732
733 dev = alloc_etherdev(sizeof(struct lance_private));
734 if (dev == NULL) {
735 release_resource(r1);
736 release_resource(r2);
737 return -ENOMEM;
738 }
739
740 priv = netdev_priv(dev);
741
742 r1->name = dev->name;
743 r2->name = dev->name;
744
745 dev->dev_addr[0] = 0x00;
746 if (z->id != ZORRO_PROD_AMERISTAR_A2065) { /* Commodore */
747 dev->dev_addr[1] = 0x80;
748 dev->dev_addr[2] = 0x10;
749 } else { /* Ameristar */
750 dev->dev_addr[1] = 0x00;
751 dev->dev_addr[2] = 0x9f;
752 }
753 dev->dev_addr[3] = (z->rom.er_SerialNumber>>16) & 0xff;
754 dev->dev_addr[4] = (z->rom.er_SerialNumber>>8) & 0xff;
755 dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff;
756 dev->base_addr = ZTWO_VADDR(base_addr);
757 dev->mem_start = ZTWO_VADDR(mem_start);
758 dev->mem_end = dev->mem_start+A2065_RAM_SIZE;
759
760 priv->ll = (volatile struct lance_regs *)dev->base_addr;
761 priv->init_block = (struct lance_init_block *)dev->mem_start;
762 priv->lance_init_block = (struct lance_init_block *)A2065_RAM;
763 priv->auto_select = 0;
764 priv->busmaster_regval = LE_C3_BSWP;
765
766 priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS;
767 priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS;
768 priv->rx_ring_mod_mask = RX_RING_MOD_MASK;
769 priv->tx_ring_mod_mask = TX_RING_MOD_MASK;
770
771 dev->open = &lance_open;
772 dev->stop = &lance_close;
773 dev->hard_start_xmit = &lance_start_xmit;
774 dev->tx_timeout = &lance_tx_timeout;
775 dev->watchdog_timeo = 5*HZ;
776 dev->set_multicast_list = &lance_set_multicast;
777 dev->dma = 0;
778
779 init_timer(&priv->multicast_timer);
780 priv->multicast_timer.data = (unsigned long) dev;
781 priv->multicast_timer.function =
782 (void (*)(unsigned long)) &lance_set_multicast;
783
784 err = register_netdev(dev);
785 if (err) {
786 release_resource(r1);
787 release_resource(r2);
788 free_netdev(dev);
789 return err;
790 }
791 zorro_set_drvdata(z, dev);
792
793 printk(KERN_INFO "%s: A2065 at 0x%08lx, Ethernet Address "
794 "%s\n", dev->name, board,
795 print_mac(mac, dev->dev_addr));
796
797 return 0;
798 }
799
800
801 static void __devexit a2065_remove_one(struct zorro_dev *z)
802 {
803 struct net_device *dev = zorro_get_drvdata(z);
804
805 unregister_netdev(dev);
806 release_mem_region(ZTWO_PADDR(dev->base_addr),
807 sizeof(struct lance_regs));
808 release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE);
809 free_netdev(dev);
810 }
811
812 static int __init a2065_init_module(void)
813 {
814 return zorro_register_driver(&a2065_driver);
815 }
816
817 static void __exit a2065_cleanup_module(void)
818 {
819 zorro_unregister_driver(&a2065_driver);
820 }
821
822 module_init(a2065_init_module);
823 module_exit(a2065_cleanup_module);
824
825 MODULE_LICENSE("GPL");
Support for the Chinese Samsung S3C2440 based development boards