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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / net / ni52.c
blob1ef984ff40ea1cb35df5373b005c6bb97ed2fe70
1 /*
2 * net-3-driver for the NI5210 card (i82586 Ethernet chip)
3 *
4 * This is an extension to the Linux operating system, and is covered by the
5 * same GNU General Public License that covers that work.
6 *
7 * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
8 * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
9 * [feel free to mail ....]
10 *
11 * when using as module: (no autoprobing!)
12 * run with e.g:
13 * insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000
14 *
15 * CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!.
16 *
17 * If you find a bug, please report me:
18 * The kernel panic output and any kmsg from the ni52 driver
19 * the ni5210-driver-version and the linux-kernel version
20 * how many shared memory (memsize) on the netcard,
21 * bootprom: yes/no, base_addr, mem_start
22 * maybe the ni5210-card revision and the i82586 version
23 *
24 * autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340
25 * mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000,
26 * 0xd8000,0xcc000,0xce000,0xda000,0xdc000
27 *
28 * sources:
29 * skeleton.c from Donald Becker
30 *
31 * I have also done a look in the following sources: (mail me if you need them)
32 * crynwr-packet-driver by Russ Nelson
33 * Garret A. Wollman's (fourth) i82586-driver for BSD
34 * (before getting an i82596 (yes 596 not 586) manual, the existing drivers
35 * helped me a lot to understand this tricky chip.)
36 *
37 * Known Problems:
38 * The internal sysbus seems to be slow. So we often lose packets because of
39 * overruns while receiving from a fast remote host.
40 * This can slow down TCP connections. Maybe the newer ni5210 cards are
41 * better. My experience is, that if a machine sends with more than about
42 * 500-600K/s the fifo/sysbus overflows.
43 *
44 * IMPORTANT NOTE:
45 * On fast networks, it's a (very) good idea to have 16K shared memory. With
46 * 8K, we can store only 4 receive frames, so it can (easily) happen that a
47 * remote machine 'overruns' our system.
48 *
49 * Known i82586/card problems (I'm sure, there are many more!):
50 * Running the NOP-mode, the i82586 sometimes seems to forget to report
51 * every xmit-interrupt until we restart the CU.
52 * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit
53 * in the RBD-Struct which indicates an end of the RBD queue.
54 * Instead, the RU fetches another (randomly selected and
55 * usually used) RBD and begins to fill it. (Maybe, this happens only if
56 * the last buffer from the previous RFD fits exact into the queue and
57 * the next RFD can't fetch an initial RBD. Anyone knows more? )
58 *
59 * results from ftp performance tests with Linux 1.2.5
60 * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s)
61 * sending in NOP-mode: peak performance up to 530K/s (but better don't
62 * run this mode)
63 */
64
65
66 static int debuglevel; /* debug-printk 0: off 1: a few 2: more */
67 static int automatic_resume; /* experimental .. better should be zero */
68 static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */
69 static int fifo = 0x8; /* don't change */
70
71 #include <linux/module.h>
72 #include <linux/kernel.h>
73 #include <linux/string.h>
74 #include <linux/errno.h>
75 #include <linux/ioport.h>
76 #include <linux/interrupt.h>
77 #include <linux/delay.h>
78 #include <linux/init.h>
79 #include <linux/bitops.h>
80 #include <asm/io.h>
81
82 #include <linux/netdevice.h>
83 #include <linux/etherdevice.h>
84 #include <linux/skbuff.h>
85
86 #include "ni52.h"
87
88 #define DRV_NAME "ni52"
89
90 #define DEBUG /* debug on */
91 #define SYSBUSVAL 1 /* 8 Bit */
92
93 #define ni_attn586() { outb(0, dev->base_addr + NI52_ATTENTION); }
94 #define ni_reset586() { outb(0, dev->base_addr + NI52_RESET); }
95 #define ni_disint() { outb(0, dev->base_addr + NI52_INTDIS); }
96 #define ni_enaint() { outb(0, dev->base_addr + NI52_INTENA); }
97
98 #define make32(ptr16) ((void __iomem *)(p->memtop + (short) (ptr16)))
99 #define make24(ptr32) ((char __iomem *)(ptr32)) - p->base
100 #define make16(ptr32) ((unsigned short) ((char __iomem *)(ptr32)\
101 - p->memtop))
102
103 /******************* how to calculate the buffers *****************************
104
105 * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
106 * --------------- in a different (more stable?) mode. Only in this mode it's
107 * possible to configure the driver with 'NO_NOPCOMMANDS'
108
109 sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
110 sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
111 sizeof(rfd) = 24; sizeof(rbd) = 12;
112 sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
113 sizeof(nop_cmd) = 8;
114
115 * if you don't know the driver, better do not change these values: */
116
117 #define RECV_BUFF_SIZE 1524 /* slightly oversized */
118 #define XMIT_BUFF_SIZE 1524 /* slightly oversized */
119 #define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
120 #define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
121 #define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
122 #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
123
124 /**************************************************************************/
125
126
127 #define NI52_TOTAL_SIZE 16
128 #define NI52_ADDR0 0x02
129 #define NI52_ADDR1 0x07
130 #define NI52_ADDR2 0x01
131
132 static int ni52_probe1(struct net_device *dev, int ioaddr);
133 static irqreturn_t ni52_interrupt(int irq, void *dev_id);
134 static int ni52_open(struct net_device *dev);
135 static int ni52_close(struct net_device *dev);
136 static netdev_tx_t ni52_send_packet(struct sk_buff *, struct net_device *);
137 static struct net_device_stats *ni52_get_stats(struct net_device *dev);
138 static void set_multicast_list(struct net_device *dev);
139 static void ni52_timeout(struct net_device *dev);
140
141 /* helper-functions */
142 static int init586(struct net_device *dev);
143 static int check586(struct net_device *dev, unsigned size);
144 static void alloc586(struct net_device *dev);
145 static void startrecv586(struct net_device *dev);
146 static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr);
147 static void ni52_rcv_int(struct net_device *dev);
148 static void ni52_xmt_int(struct net_device *dev);
149 static void ni52_rnr_int(struct net_device *dev);
150
151 struct priv {
152 char __iomem *base;
153 char __iomem *mapped;
154 char __iomem *memtop;
155 spinlock_t spinlock;
156 int reset;
157 struct rfd_struct __iomem *rfd_last, *rfd_top, *rfd_first;
158 struct scp_struct __iomem *scp;
159 struct iscp_struct __iomem *iscp;
160 struct scb_struct __iomem *scb;
161 struct tbd_struct __iomem *xmit_buffs[NUM_XMIT_BUFFS];
162 #if (NUM_XMIT_BUFFS == 1)
163 struct transmit_cmd_struct __iomem *xmit_cmds[2];
164 struct nop_cmd_struct __iomem *nop_cmds[2];
165 #else
166 struct transmit_cmd_struct __iomem *xmit_cmds[NUM_XMIT_BUFFS];
167 struct nop_cmd_struct __iomem *nop_cmds[NUM_XMIT_BUFFS];
168 #endif
169 int nop_point, num_recv_buffs;
170 char __iomem *xmit_cbuffs[NUM_XMIT_BUFFS];
171 int xmit_count, xmit_last;
172 };
173
174 /* wait for command with timeout: */
175 static void wait_for_scb_cmd(struct net_device *dev)
176 {
177 struct priv *p = netdev_priv(dev);
178 int i;
179 for (i = 0; i < 16384; i++) {
180 if (readb(&p->scb->cmd_cuc) == 0)
181 break;
182 udelay(4);
183 if (i == 16383) {
184 printk(KERN_ERR "%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",
185 dev->name, readb(&p->scb->cmd_cuc), readb(&p->scb->cus));
186 if (!p->reset) {
187 p->reset = 1;
188 ni_reset586();
189 }
190 }
191 }
192 }
193
194 static void wait_for_scb_cmd_ruc(struct net_device *dev)
195 {
196 struct priv *p = netdev_priv(dev);
197 int i;
198 for (i = 0; i < 16384; i++) {
199 if (readb(&p->scb->cmd_ruc) == 0)
200 break;
201 udelay(4);
202 if (i == 16383) {
203 printk(KERN_ERR "%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",
204 dev->name, readb(&p->scb->cmd_ruc),
205 readb(&p->scb->rus));
206 if (!p->reset) {
207 p->reset = 1;
208 ni_reset586();
209 }
210 }
211 }
212 }
213
214 static void wait_for_stat_compl(void __iomem *p)
215 {
216 struct nop_cmd_struct __iomem *addr = p;
217 int i;
218 for (i = 0; i < 32767; i++) {
219 if (readw(&((addr)->cmd_status)) & STAT_COMPL)
220 break;
221 udelay(32);
222 }
223 }
224
225 /**********************************************
226 * close device
227 */
228 static int ni52_close(struct net_device *dev)
229 {
230 free_irq(dev->irq, dev);
231 ni_reset586(); /* the hard way to stop the receiver */
232 netif_stop_queue(dev);
233 return 0;
234 }
235
236 /**********************************************
237 * open device
238 */
239 static int ni52_open(struct net_device *dev)
240 {
241 int ret;
242
243 ni_disint();
244 alloc586(dev);
245 init586(dev);
246 startrecv586(dev);
247 ni_enaint();
248
249 ret = request_irq(dev->irq, ni52_interrupt, 0, dev->name, dev);
250 if (ret) {
251 ni_reset586();
252 return ret;
253 }
254 netif_start_queue(dev);
255 return 0; /* most done by init */
256 }
257
258 static int check_iscp(struct net_device *dev, void __iomem *addr)
259 {
260 struct iscp_struct __iomem *iscp = addr;
261 struct priv *p = netdev_priv(dev);
262 memset_io(iscp, 0, sizeof(struct iscp_struct));
263
264 writel(make24(iscp), &p->scp->iscp);
265 writeb(1, &iscp->busy);
266
267 ni_reset586();
268 ni_attn586();
269 mdelay(32); /* wait a while... */
270 /* i82586 clears 'busy' after successful init */
271 if (readb(&iscp->busy))
272 return 0;
273 return 1;
274 }
275
276 /**********************************************
277 * Check to see if there's an 82586 out there.
278 */
279 static int check586(struct net_device *dev, unsigned size)
280 {
281 struct priv *p = netdev_priv(dev);
282 int i;
283
284 p->mapped = ioremap(dev->mem_start, size);
285 if (!p->mapped)
286 return 0;
287
288 p->base = p->mapped + size - 0x01000000;
289 p->memtop = p->mapped + size;
290 p->scp = (struct scp_struct __iomem *)(p->base + SCP_DEFAULT_ADDRESS);
291 p->scb = (struct scb_struct __iomem *) p->mapped;
292 p->iscp = (struct iscp_struct __iomem *)p->scp - 1;
293 memset_io(p->scp, 0, sizeof(struct scp_struct));
294 for (i = 0; i < sizeof(struct scp_struct); i++)
295 /* memory was writeable? */
296 if (readb((char __iomem *)p->scp + i))
297 goto Enodev;
298 writeb(SYSBUSVAL, &p->scp->sysbus); /* 1 = 8Bit-Bus, 0 = 16 Bit */
299 if (readb(&p->scp->sysbus) != SYSBUSVAL)
300 goto Enodev;
301
302 if (!check_iscp(dev, p->mapped))
303 goto Enodev;
304 if (!check_iscp(dev, p->iscp))
305 goto Enodev;
306 return 1;
307 Enodev:
308 iounmap(p->mapped);
309 return 0;
310 }
311
312 /******************************************************************
313 * set iscp at the right place, called by ni52_probe1 and open586.
314 */
315 static void alloc586(struct net_device *dev)
316 {
317 struct priv *p = netdev_priv(dev);
318
319 ni_reset586();
320 mdelay(32);
321
322 memset_io(p->iscp, 0, sizeof(struct iscp_struct));
323 memset_io(p->scp , 0, sizeof(struct scp_struct));
324
325 writel(make24(p->iscp), &p->scp->iscp);
326 writeb(SYSBUSVAL, &p->scp->sysbus);
327 writew(make16(p->scb), &p->iscp->scb_offset);
328
329 writeb(1, &p->iscp->busy);
330 ni_reset586();
331 ni_attn586();
332
333 mdelay(32);
334
335 if (readb(&p->iscp->busy))
336 printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name);
337
338 p->reset = 0;
339
340 memset_io(p->scb, 0, sizeof(struct scb_struct));
341 }
342
343 /* set: io,irq,memstart,memend or set it when calling insmod */
344 static int irq = 9;
345 static int io = 0x300;
346 static long memstart; /* e.g 0xd0000 */
347 static long memend; /* e.g 0xd4000 */
348
349 /**********************************************
350 * probe the ni5210-card
351 */
352 struct net_device * __init ni52_probe(int unit)
353 {
354 struct net_device *dev = alloc_etherdev(sizeof(struct priv));
355 static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0};
356 struct priv *p;
357 int *port;
358 int err = 0;
359
360 if (!dev)
361 return ERR_PTR(-ENOMEM);
362
363 p = netdev_priv(dev);
364
365 if (unit >= 0) {
366 sprintf(dev->name, "eth%d", unit);
367 netdev_boot_setup_check(dev);
368 io = dev->base_addr;
369 irq = dev->irq;
370 memstart = dev->mem_start;
371 memend = dev->mem_end;
372 }
373
374 if (io > 0x1ff) { /* Check a single specified location. */
375 err = ni52_probe1(dev, io);
376 } else if (io > 0) { /* Don't probe at all. */
377 err = -ENXIO;
378 } else {
379 for (port = ports; *port && ni52_probe1(dev, *port) ; port++)
380 ;
381 if (*port)
382 goto got_it;
383 #ifdef FULL_IO_PROBE
384 for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8)
385 ;
386 if (io < 0x400)
387 goto got_it;
388 #endif
389 err = -ENODEV;
390 }
391 if (err)
392 goto out;
393 got_it:
394 err = register_netdev(dev);
395 if (err)
396 goto out1;
397 return dev;
398 out1:
399 iounmap(p->mapped);
400 release_region(dev->base_addr, NI52_TOTAL_SIZE);
401 out:
402 free_netdev(dev);
403 return ERR_PTR(err);
404 }
405
406 static const struct net_device_ops ni52_netdev_ops = {
407 .ndo_open = ni52_open,
408 .ndo_stop = ni52_close,
409 .ndo_get_stats = ni52_get_stats,
410 .ndo_tx_timeout = ni52_timeout,
411 .ndo_start_xmit = ni52_send_packet,
412 .ndo_set_multicast_list = set_multicast_list,
413 .ndo_change_mtu = eth_change_mtu,
414 .ndo_set_mac_address = eth_mac_addr,
415 .ndo_validate_addr = eth_validate_addr,
416 };
417
418 static int __init ni52_probe1(struct net_device *dev, int ioaddr)
419 {
420 int i, size, retval;
421 struct priv *priv = netdev_priv(dev);
422
423 dev->base_addr = ioaddr;
424 dev->irq = irq;
425 dev->mem_start = memstart;
426 dev->mem_end = memend;
427
428 spin_lock_init(&priv->spinlock);
429
430 if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME))
431 return -EBUSY;
432
433 if (!(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) ||
434 !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) {
435 retval = -ENODEV;
436 goto out;
437 }
438
439 for (i = 0; i < ETH_ALEN; i++)
440 dev->dev_addr[i] = inb(dev->base_addr+i);
441
442 if (dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1 ||
443 dev->dev_addr[2] != NI52_ADDR2) {
444 retval = -ENODEV;
445 goto out;
446 }
447
448 printk(KERN_INFO "%s: NI5210 found at %#3lx, ",
449 dev->name, dev->base_addr);
450
451 /*
452 * check (or search) IO-Memory, 8K and 16K
453 */
454 #ifdef MODULE
455 size = dev->mem_end - dev->mem_start;
456 if (size != 0x2000 && size != 0x4000) {
457 printk("\n");
458 printk(KERN_ERR "%s: Invalid memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n", dev->name, size);
459 retval = -ENODEV;
460 goto out;
461 }
462 if (!check586(dev, size)) {
463 printk(KERN_ERR "?memcheck, Can't find memory at 0x%lx with size %d!\n", dev->mem_start, size);
464 retval = -ENODEV;
465 goto out;
466 }
467 #else
468 if (dev->mem_start != 0) {
469 /* no auto-mem-probe */
470 size = 0x4000; /* check for 16K mem */
471 if (!check586(dev, size)) {
472 size = 0x2000; /* check for 8K mem */
473 if (!check586(dev, size)) {
474 printk(KERN_ERR "?memprobe, Can't find memory at 0x%lx!\n", dev->mem_start);
475 retval = -ENODEV;
476 goto out;
477 }
478 }
479 } else {
480 static const unsigned long memaddrs[] = {
481 0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000,
482 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0
483 };
484 for (i = 0;; i++) {
485 if (!memaddrs[i]) {
486 printk(KERN_ERR "?memprobe, Can't find io-memory!\n");
487 retval = -ENODEV;
488 goto out;
489 }
490 dev->mem_start = memaddrs[i];
491 size = 0x2000; /* check for 8K mem */
492 if (check586(dev, size))
493 /* 8K-check */
494 break;
495 size = 0x4000; /* check for 16K mem */
496 if (check586(dev, size))
497 /* 16K-check */
498 break;
499 }
500 }
501 /* set mem_end showed by 'ifconfig' */
502 dev->mem_end = dev->mem_start + size;
503 #endif
504
505 alloc586(dev);
506
507 /* set number of receive-buffs according to memsize */
508 if (size == 0x2000)
509 priv->num_recv_buffs = NUM_RECV_BUFFS_8;
510 else
511 priv->num_recv_buffs = NUM_RECV_BUFFS_16;
512
513 printk(KERN_DEBUG "Memaddr: 0x%lx, Memsize: %d, ",
514 dev->mem_start, size);
515
516 if (dev->irq < 2) {
517 unsigned long irq_mask;
518
519 irq_mask = probe_irq_on();
520 ni_reset586();
521 ni_attn586();
522
523 mdelay(20);
524 dev->irq = probe_irq_off(irq_mask);
525 if (!dev->irq) {
526 printk("?autoirq, Failed to detect IRQ line!\n");
527 retval = -EAGAIN;
528 iounmap(priv->mapped);
529 goto out;
530 }
531 printk("IRQ %d (autodetected).\n", dev->irq);
532 } else {
533 if (dev->irq == 2)
534 dev->irq = 9;
535 printk("IRQ %d (assigned and not checked!).\n", dev->irq);
536 }
537
538 dev->netdev_ops = &ni52_netdev_ops;
539 dev->watchdog_timeo = HZ/20;
540
541 return 0;
542 out:
543 release_region(ioaddr, NI52_TOTAL_SIZE);
544 return retval;
545 }
546
547 /**********************************************
548 * init the chip (ni52-interrupt should be disabled?!)
549 * needs a correct 'allocated' memory
550 */
551
552 static int init586(struct net_device *dev)
553 {
554 void __iomem *ptr;
555 int i, result = 0;
556 struct priv *p = netdev_priv(dev);
557 struct configure_cmd_struct __iomem *cfg_cmd;
558 struct iasetup_cmd_struct __iomem *ias_cmd;
559 struct tdr_cmd_struct __iomem *tdr_cmd;
560 struct mcsetup_cmd_struct __iomem *mc_cmd;
561 struct netdev_hw_addr *ha;
562 int num_addrs = netdev_mc_count(dev);
563
564 ptr = p->scb + 1;
565
566 cfg_cmd = ptr; /* configure-command */
567 writew(0, &cfg_cmd->cmd_status);
568 writew(CMD_CONFIGURE | CMD_LAST, &cfg_cmd->cmd_cmd);
569 writew(0xFFFF, &cfg_cmd->cmd_link);
570
571 /* number of cfg bytes */
572 writeb(0x0a, &cfg_cmd->byte_cnt);
573 /* fifo-limit (8=tx:32/rx:64) */
574 writeb(fifo, &cfg_cmd->fifo);
575 /* hold or discard bad recv frames (bit 7) */
576 writeb(0x40, &cfg_cmd->sav_bf);
577 /* addr_len |!src_insert |pre-len |loopback */
578 writeb(0x2e, &cfg_cmd->adr_len);
579 writeb(0x00, &cfg_cmd->priority);
580 writeb(0x60, &cfg_cmd->ifs);
581 writeb(0x00, &cfg_cmd->time_low);
582 writeb(0xf2, &cfg_cmd->time_high);
583 writeb(0x00, &cfg_cmd->promisc);
584 if (dev->flags & IFF_ALLMULTI) {
585 int len = ((char __iomem *)p->iscp - (char __iomem *)ptr - 8) / 6;
586 if (num_addrs > len) {
587 printk(KERN_ERR "%s: switching to promisc. mode\n",
588 dev->name);
589 writeb(0x01, &cfg_cmd->promisc);
590 }
591 }
592 if (dev->flags & IFF_PROMISC)
593 writeb(0x01, &cfg_cmd->promisc);
594 writeb(0x00, &cfg_cmd->carr_coll);
595 writew(make16(cfg_cmd), &p->scb->cbl_offset);
596 writeb(0, &p->scb->cmd_ruc);
597
598 writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
599 ni_attn586();
600
601 wait_for_stat_compl(cfg_cmd);
602
603 if ((readw(&cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) !=
604 (STAT_COMPL|STAT_OK)) {
605 printk(KERN_ERR "%s: configure command failed: %x\n",
606 dev->name, readw(&cfg_cmd->cmd_status));
607 return 1;
608 }
609
610 /*
611 * individual address setup
612 */
613
614 ias_cmd = ptr;
615
616 writew(0, &ias_cmd->cmd_status);
617 writew(CMD_IASETUP | CMD_LAST, &ias_cmd->cmd_cmd);
618 writew(0xffff, &ias_cmd->cmd_link);
619
620 memcpy_toio(&ias_cmd->iaddr, (char *)dev->dev_addr, ETH_ALEN);
621
622 writew(make16(ias_cmd), &p->scb->cbl_offset);
623
624 writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
625 ni_attn586();
626
627 wait_for_stat_compl(ias_cmd);
628
629 if ((readw(&ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) !=
630 (STAT_OK|STAT_COMPL)) {
631 printk(KERN_ERR "%s (ni52): individual address setup command failed: %04x\n", dev->name, readw(&ias_cmd->cmd_status));
632 return 1;
633 }
634
635 /*
636 * TDR, wire check .. e.g. no resistor e.t.c
637 */
638
639 tdr_cmd = ptr;
640
641 writew(0, &tdr_cmd->cmd_status);
642 writew(CMD_TDR | CMD_LAST, &tdr_cmd->cmd_cmd);
643 writew(0xffff, &tdr_cmd->cmd_link);
644 writew(0, &tdr_cmd->status);
645
646 writew(make16(tdr_cmd), &p->scb->cbl_offset);
647 writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
648 ni_attn586();
649
650 wait_for_stat_compl(tdr_cmd);
651
652 if (!(readw(&tdr_cmd->cmd_status) & STAT_COMPL))
653 printk(KERN_ERR "%s: Problems while running the TDR.\n",
654 dev->name);
655 else {
656 udelay(16);
657 result = readw(&tdr_cmd->status);
658 writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc);
659 ni_attn586(); /* ack the interrupts */
660
661 if (result & TDR_LNK_OK)
662 ;
663 else if (result & TDR_XCVR_PRB)
664 printk(KERN_ERR "%s: TDR: Transceiver problem. Check the cable(s)!\n",
665 dev->name);
666 else if (result & TDR_ET_OPN)
667 printk(KERN_ERR "%s: TDR: No correct termination %d clocks away.\n",
668 dev->name, result & TDR_TIMEMASK);
669 else if (result & TDR_ET_SRT) {
670 /* time == 0 -> strange :-) */
671 if (result & TDR_TIMEMASK)
672 printk(KERN_ERR "%s: TDR: Detected a short circuit %d clocks away.\n",
673 dev->name, result & TDR_TIMEMASK);
674 } else
675 printk(KERN_ERR "%s: TDR: Unknown status %04x\n",
676 dev->name, result);
677 }
678
679 /*
680 * Multicast setup
681 */
682 if (num_addrs && !(dev->flags & IFF_PROMISC)) {
683 mc_cmd = ptr;
684 writew(0, &mc_cmd->cmd_status);
685 writew(CMD_MCSETUP | CMD_LAST, &mc_cmd->cmd_cmd);
686 writew(0xffff, &mc_cmd->cmd_link);
687 writew(num_addrs * 6, &mc_cmd->mc_cnt);
688
689 i = 0;
690 netdev_for_each_mc_addr(ha, dev)
691 memcpy_toio(mc_cmd->mc_list[i++], ha->addr, 6);
692
693 writew(make16(mc_cmd), &p->scb->cbl_offset);
694 writeb(CUC_START, &p->scb->cmd_cuc);
695 ni_attn586();
696
697 wait_for_stat_compl(mc_cmd);
698
699 if ((readw(&mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK))
700 != (STAT_COMPL|STAT_OK))
701 printk(KERN_ERR "%s: Can't apply multicast-address-list.\n", dev->name);
702 }
703
704 /*
705 * alloc nop/xmit-cmds
706 */
707 #if (NUM_XMIT_BUFFS == 1)
708 for (i = 0; i < 2; i++) {
709 p->nop_cmds[i] = ptr;
710 writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd);
711 writew(0, &p->nop_cmds[i]->cmd_status);
712 writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link);
713 ptr = ptr + sizeof(struct nop_cmd_struct);
714 }
715 #else
716 for (i = 0; i < NUM_XMIT_BUFFS; i++) {
717 p->nop_cmds[i] = ptr;
718 writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd);
719 writew(0, &p->nop_cmds[i]->cmd_status);
720 writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link);
721 ptr = ptr + sizeof(struct nop_cmd_struct);
722 }
723 #endif
724
725 ptr = alloc_rfa(dev, ptr); /* init receive-frame-area */
726
727 /*
728 * alloc xmit-buffs / init xmit_cmds
729 */
730 for (i = 0; i < NUM_XMIT_BUFFS; i++) {
731 /* Transmit cmd/buff 0 */
732 p->xmit_cmds[i] = ptr;
733 ptr = ptr + sizeof(struct transmit_cmd_struct);
734 p->xmit_cbuffs[i] = ptr; /* char-buffs */
735 ptr = ptr + XMIT_BUFF_SIZE;
736 p->xmit_buffs[i] = ptr; /* TBD */
737 ptr = ptr + sizeof(struct tbd_struct);
738 if ((void __iomem *)ptr > (void __iomem *)p->iscp) {
739 printk(KERN_ERR "%s: not enough shared-mem for your configuration!\n",
740 dev->name);
741 return 1;
742 }
743 memset_io(p->xmit_cmds[i], 0,
744 sizeof(struct transmit_cmd_struct));
745 memset_io(p->xmit_buffs[i], 0,
746 sizeof(struct tbd_struct));
747 writew(make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]),
748 &p->xmit_cmds[i]->cmd_link);
749 writew(STAT_COMPL, &p->xmit_cmds[i]->cmd_status);
750 writew(CMD_XMIT|CMD_INT, &p->xmit_cmds[i]->cmd_cmd);
751 writew(make16(p->xmit_buffs[i]), &p->xmit_cmds[i]->tbd_offset);
752 writew(0xffff, &p->xmit_buffs[i]->next);
753 writel(make24(p->xmit_cbuffs[i]), &p->xmit_buffs[i]->buffer);
754 }
755
756 p->xmit_count = 0;
757 p->xmit_last = 0;
758 #ifndef NO_NOPCOMMANDS
759 p->nop_point = 0;
760 #endif
761
762 /*
763 * 'start transmitter'
764 */
765 #ifndef NO_NOPCOMMANDS
766 writew(make16(p->nop_cmds[0]), &p->scb->cbl_offset);
767 writeb(CUC_START, &p->scb->cmd_cuc);
768 ni_attn586();
769 wait_for_scb_cmd(dev);
770 #else
771 writew(make16(p->xmit_cmds[0]), &p->xmit_cmds[0]->cmd_link);
772 writew(CMD_XMIT | CMD_SUSPEND | CMD_INT, &p->xmit_cmds[0]->cmd_cmd);
773 #endif
774
775 /*
776 * ack. interrupts
777 */
778 writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc);
779 ni_attn586();
780 udelay(16);
781
782 ni_enaint();
783
784 return 0;
785 }
786
787 /******************************************************
788 * This is a helper routine for ni52_rnr_int() and init586().
789 * It sets up the Receive Frame Area (RFA).
790 */
791
792 static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr)
793 {
794 struct rfd_struct __iomem *rfd = ptr;
795 struct rbd_struct __iomem *rbd;
796 int i;
797 struct priv *p = netdev_priv(dev);
798
799 memset_io(rfd, 0,
800 sizeof(struct rfd_struct) * (p->num_recv_buffs + rfdadd));
801 p->rfd_first = rfd;
802
803 for (i = 0; i < (p->num_recv_buffs + rfdadd); i++) {
804 writew(make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd)),
805 &rfd[i].next);
806 writew(0xffff, &rfd[i].rbd_offset);
807 }
808 /* RU suspend */
809 writeb(RFD_SUSP, &rfd[p->num_recv_buffs-1+rfdadd].last);
810
811 ptr = rfd + (p->num_recv_buffs + rfdadd);
812
813 rbd = ptr;
814 ptr = rbd + p->num_recv_buffs;
815
816 /* clr descriptors */
817 memset_io(rbd, 0, sizeof(struct rbd_struct) * (p->num_recv_buffs));
818
819 for (i = 0; i < p->num_recv_buffs; i++) {
820 writew(make16(rbd + (i+1) % p->num_recv_buffs), &rbd[i].next);
821 writew(RECV_BUFF_SIZE, &rbd[i].size);
822 writel(make24(ptr), &rbd[i].buffer);
823 ptr = ptr + RECV_BUFF_SIZE;
824 }
825 p->rfd_top = p->rfd_first;
826 p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
827
828 writew(make16(p->rfd_first), &p->scb->rfa_offset);
829 writew(make16(rbd), &p->rfd_first->rbd_offset);
830
831 return ptr;
832 }
833
834
835 /**************************************************
836 * Interrupt Handler ...
837 */
838
839 static irqreturn_t ni52_interrupt(int irq, void *dev_id)
840 {
841 struct net_device *dev = dev_id;
842 unsigned int stat;
843 int cnt = 0;
844 struct priv *p;
845
846 p = netdev_priv(dev);
847
848 if (debuglevel > 1)
849 printk("I");
850
851 spin_lock(&p->spinlock);
852
853 wait_for_scb_cmd(dev); /* wait for last command */
854
855 while ((stat = readb(&p->scb->cus) & STAT_MASK)) {
856 writeb(stat, &p->scb->cmd_cuc);
857 ni_attn586();
858
859 if (stat & STAT_FR) /* received a frame */
860 ni52_rcv_int(dev);
861
862 if (stat & STAT_RNR) { /* RU went 'not ready' */
863 printk("(R)");
864 if (readb(&p->scb->rus) & RU_SUSPEND) {
865 /* special case: RU_SUSPEND */
866 wait_for_scb_cmd(dev);
867 writeb(RUC_RESUME, &p->scb->cmd_ruc);
868 ni_attn586();
869 wait_for_scb_cmd_ruc(dev);
870 } else {
871 printk(KERN_ERR "%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",
872 dev->name, stat, readb(&p->scb->rus));
873 ni52_rnr_int(dev);
874 }
875 }
876
877 /* Command with I-bit set complete */
878 if (stat & STAT_CX)
879 ni52_xmt_int(dev);
880
881 #ifndef NO_NOPCOMMANDS
882 if (stat & STAT_CNA) { /* CU went 'not ready' */
883 if (netif_running(dev))
884 printk(KERN_ERR "%s: oops! CU has left active state. stat: %04x/%02x.\n",
885 dev->name, stat, readb(&p->scb->cus));
886 }
887 #endif
888
889 if (debuglevel > 1)
890 printk("%d", cnt++);
891
892 /* Wait for ack. (ni52_xmt_int can be faster than ack!!) */
893 wait_for_scb_cmd(dev);
894 if (readb(&p->scb->cmd_cuc)) { /* timed out? */
895 printk(KERN_ERR "%s: Acknowledge timed out.\n",
896 dev->name);
897 ni_disint();
898 break;
899 }
900 }
901 spin_unlock(&p->spinlock);
902
903 if (debuglevel > 1)
904 printk("i");
905 return IRQ_HANDLED;
906 }
907
908 /*******************************************************
909 * receive-interrupt
910 */
911
912 static void ni52_rcv_int(struct net_device *dev)
913 {
914 int status, cnt = 0;
915 unsigned short totlen;
916 struct sk_buff *skb;
917 struct rbd_struct __iomem *rbd;
918 struct priv *p = netdev_priv(dev);
919
920 if (debuglevel > 0)
921 printk("R");
922
923 for (; (status = readb(&p->rfd_top->stat_high)) & RFD_COMPL;) {
924 rbd = make32(readw(&p->rfd_top->rbd_offset));
925 if (status & RFD_OK) { /* frame received without error? */
926 totlen = readw(&rbd->status);
927 if (totlen & RBD_LAST) {
928 /* the first and the last buffer? */
929 totlen &= RBD_MASK; /* length of this frame */
930 writew(0x00, &rbd->status);
931 skb = (struct sk_buff *)dev_alloc_skb(totlen+2);
932 if (skb != NULL) {
933 skb_reserve(skb, 2);
934 skb_put(skb, totlen);
935 memcpy_fromio(skb->data, p->base + readl(&rbd->buffer), totlen);
936 skb->protocol = eth_type_trans(skb, dev);
937 netif_rx(skb);
938 dev->stats.rx_packets++;
939 dev->stats.rx_bytes += totlen;
940 } else
941 dev->stats.rx_dropped++;
942 } else {
943 int rstat;
944 /* free all RBD's until RBD_LAST is set */
945 totlen = 0;
946 while (!((rstat = readw(&rbd->status)) & RBD_LAST)) {
947 totlen += rstat & RBD_MASK;
948 if (!rstat) {
949 printk(KERN_ERR "%s: Whoops .. no end mark in RBD list\n", dev->name);
950 break;
951 }
952 writew(0, &rbd->status);
953 rbd = make32(readw(&rbd->next));
954 }
955 totlen += rstat & RBD_MASK;
956 writew(0, &rbd->status);
957 printk(KERN_ERR "%s: received oversized frame! length: %d\n",
958 dev->name, totlen);
959 dev->stats.rx_dropped++;
960 }
961 } else {/* frame !(ok), only with 'save-bad-frames' */
962 printk(KERN_ERR "%s: oops! rfd-error-status: %04x\n",
963 dev->name, status);
964 dev->stats.rx_errors++;
965 }
966 writeb(0, &p->rfd_top->stat_high);
967 writeb(RFD_SUSP, &p->rfd_top->last); /* maybe exchange by RFD_LAST */
968 writew(0xffff, &p->rfd_top->rbd_offset);
969 writeb(0, &p->rfd_last->last); /* delete RFD_SUSP */
970 p->rfd_last = p->rfd_top;
971 p->rfd_top = make32(readw(&p->rfd_top->next)); /* step to next RFD */
972 writew(make16(p->rfd_top), &p->scb->rfa_offset);
973
974 if (debuglevel > 0)
975 printk("%d", cnt++);
976 }
977
978 if (automatic_resume) {
979 wait_for_scb_cmd(dev);
980 writeb(RUC_RESUME, &p->scb->cmd_ruc);
981 ni_attn586();
982 wait_for_scb_cmd_ruc(dev);
983 }
984
985 #ifdef WAIT_4_BUSY
986 {
987 int i;
988 for (i = 0; i < 1024; i++) {
989 if (p->rfd_top->status)
990 break;
991 udelay(16);
992 if (i == 1023)
993 printk(KERN_ERR "%s: RU hasn't fetched next RFD (not busy/complete)\n", dev->name);
994 }
995 }
996 #endif
997 if (debuglevel > 0)
998 printk("r");
999 }
1000
1001 /**********************************************************
1002 * handle 'Receiver went not ready'.
1003 */
1004
1005 static void ni52_rnr_int(struct net_device *dev)
1006 {
1007 struct priv *p = netdev_priv(dev);
1008
1009 dev->stats.rx_errors++;
1010
1011 wait_for_scb_cmd(dev); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
1012 writeb(RUC_ABORT, &p->scb->cmd_ruc); /* usually the RU is in the 'no resource'-state .. abort it now. */
1013 ni_attn586();
1014 wait_for_scb_cmd_ruc(dev); /* wait for accept cmd. */
1015
1016 alloc_rfa(dev, p->rfd_first);
1017 /* maybe add a check here, before restarting the RU */
1018 startrecv586(dev); /* restart RU */
1019
1020 printk(KERN_ERR "%s: Receive-Unit restarted. Status: %04x\n",
1021 dev->name, readb(&p->scb->rus));
1022
1023 }
1024
1025 /**********************************************************
1026 * handle xmit - interrupt
1027 */
1028
1029 static void ni52_xmt_int(struct net_device *dev)
1030 {
1031 int status;
1032 struct priv *p = netdev_priv(dev);
1033
1034 if (debuglevel > 0)
1035 printk("X");
1036
1037 status = readw(&p->xmit_cmds[p->xmit_last]->cmd_status);
1038 if (!(status & STAT_COMPL))
1039 printk(KERN_ERR "%s: strange .. xmit-int without a 'COMPLETE'\n", dev->name);
1040
1041 if (status & STAT_OK) {
1042 dev->stats.tx_packets++;
1043 dev->stats.collisions += (status & TCMD_MAXCOLLMASK);
1044 } else {
1045 dev->stats.tx_errors++;
1046 if (status & TCMD_LATECOLL) {
1047 printk(KERN_ERR "%s: late collision detected.\n",
1048 dev->name);
1049 dev->stats.collisions++;
1050 } else if (status & TCMD_NOCARRIER) {
1051 dev->stats.tx_carrier_errors++;
1052 printk(KERN_ERR "%s: no carrier detected.\n",
1053 dev->name);
1054 } else if (status & TCMD_LOSTCTS)
1055 printk(KERN_ERR "%s: loss of CTS detected.\n",
1056 dev->name);
1057 else if (status & TCMD_UNDERRUN) {
1058 dev->stats.tx_fifo_errors++;
1059 printk(KERN_ERR "%s: DMA underrun detected.\n",
1060 dev->name);
1061 } else if (status & TCMD_MAXCOLL) {
1062 printk(KERN_ERR "%s: Max. collisions exceeded.\n",
1063 dev->name);
1064 dev->stats.collisions += 16;
1065 }
1066 }
1067 #if (NUM_XMIT_BUFFS > 1)
1068 if ((++p->xmit_last) == NUM_XMIT_BUFFS)
1069 p->xmit_last = 0;
1070 #endif
1071 netif_wake_queue(dev);
1072 }
1073
1074 /***********************************************************
1075 * (re)start the receiver
1076 */
1077
1078 static void startrecv586(struct net_device *dev)
1079 {
1080 struct priv *p = netdev_priv(dev);
1081
1082 wait_for_scb_cmd(dev);
1083 wait_for_scb_cmd_ruc(dev);
1084 writew(make16(p->rfd_first), &p->scb->rfa_offset);
1085 writeb(RUC_START, &p->scb->cmd_ruc);
1086 ni_attn586(); /* start cmd. */
1087 wait_for_scb_cmd_ruc(dev);
1088 /* wait for accept cmd. (no timeout!!) */
1089 }
1090
1091 static void ni52_timeout(struct net_device *dev)
1092 {
1093 struct priv *p = netdev_priv(dev);
1094 #ifndef NO_NOPCOMMANDS
1095 if (readb(&p->scb->cus) & CU_ACTIVE) { /* COMMAND-UNIT active? */
1096 netif_wake_queue(dev);
1097 #ifdef DEBUG
1098 printk(KERN_ERR "%s: strange ... timeout with CU active?!?\n",
1099 dev->name);
1100 printk(KERN_ERR "%s: X0: %04x N0: %04x N1: %04x %d\n",
1101 dev->name, (int)p->xmit_cmds[0]->cmd_status,
1102 readw(&p->nop_cmds[0]->cmd_status),
1103 readw(&p->nop_cmds[1]->cmd_status),
1104 p->nop_point);
1105 #endif
1106 writeb(CUC_ABORT, &p->scb->cmd_cuc);
1107 ni_attn586();
1108 wait_for_scb_cmd(dev);
1109 writew(make16(p->nop_cmds[p->nop_point]), &p->scb->cbl_offset);
1110 writeb(CUC_START, &p->scb->cmd_cuc);
1111 ni_attn586();
1112 wait_for_scb_cmd(dev);
1113 dev->trans_start = jiffies; /* prevent tx timeout */
1114 return 0;
1115 }
1116 #endif
1117 {
1118 #ifdef DEBUG
1119 printk(KERN_ERR "%s: xmitter timed out, try to restart! stat: %02x\n",
1120 dev->name, readb(&p->scb->cus));
1121 printk(KERN_ERR "%s: command-stats: %04x %04x\n",
1122 dev->name,
1123 readw(&p->xmit_cmds[0]->cmd_status),
1124 readw(&p->xmit_cmds[1]->cmd_status));
1125 printk(KERN_ERR "%s: check, whether you set the right interrupt number!\n",
1126 dev->name);
1127 #endif
1128 ni52_close(dev);
1129 ni52_open(dev);
1130 }
1131 dev->trans_start = jiffies; /* prevent tx timeout */
1132 }
1133
1134 /******************************************************
1135 * send frame
1136 */
1137
1138 static netdev_tx_t ni52_send_packet(struct sk_buff *skb,
1139 struct net_device *dev)
1140 {
1141 int len, i;
1142 #ifndef NO_NOPCOMMANDS
1143 int next_nop;
1144 #endif
1145 struct priv *p = netdev_priv(dev);
1146
1147 if (skb->len > XMIT_BUFF_SIZE) {
1148 printk(KERN_ERR "%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n", dev->name, XMIT_BUFF_SIZE, skb->len);
1149 return NETDEV_TX_OK;
1150 }
1151
1152 netif_stop_queue(dev);
1153
1154 memcpy_toio(p->xmit_cbuffs[p->xmit_count], skb->data, skb->len);
1155 len = skb->len;
1156 if (len < ETH_ZLEN) {
1157 len = ETH_ZLEN;
1158 memset_io(p->xmit_cbuffs[p->xmit_count]+skb->len, 0,
1159 len - skb->len);
1160 }
1161
1162 #if (NUM_XMIT_BUFFS == 1)
1163 # ifdef NO_NOPCOMMANDS
1164
1165 #ifdef DEBUG
1166 if (readb(&p->scb->cus) & CU_ACTIVE) {
1167 printk(KERN_ERR "%s: Hmmm .. CU is still running and we wanna send a new packet.\n", dev->name);
1168 printk(KERN_ERR "%s: stat: %04x %04x\n",
1169 dev->name, readb(&p->scb->cus),
1170 readw(&p->xmit_cmds[0]->cmd_status));
1171 }
1172 #endif
1173 writew(TBD_LAST | len, &p->xmit_buffs[0]->size);
1174 for (i = 0; i < 16; i++) {
1175 writew(0, &p->xmit_cmds[0]->cmd_status);
1176 wait_for_scb_cmd(dev);
1177 if ((readb(&p->scb->cus) & CU_STATUS) == CU_SUSPEND)
1178 writeb(CUC_RESUME, &p->scb->cmd_cuc);
1179 else {
1180 writew(make16(p->xmit_cmds[0]), &p->scb->cbl_offset);
1181 writeb(CUC_START, &p->scb->cmd_cuc);
1182 }
1183 ni_attn586();
1184 if (!i)
1185 dev_kfree_skb(skb);
1186 wait_for_scb_cmd(dev);
1187 /* test it, because CU sometimes doesn't start immediately */
1188 if (readb(&p->scb->cus) & CU_ACTIVE)
1189 break;
1190 if (readw(&p->xmit_cmds[0]->cmd_status))
1191 break;
1192 if (i == 15)
1193 printk(KERN_WARNING "%s: Can't start transmit-command.\n", dev->name);
1194 }
1195 # else
1196 next_nop = (p->nop_point + 1) & 0x1;
1197 writew(TBD_LAST | len, &p->xmit_buffs[0]->size);
1198 writew(make16(p->nop_cmds[next_nop]), &p->xmit_cmds[0]->cmd_link);
1199 writew(make16(p->nop_cmds[next_nop]),
1200 &p->nop_cmds[next_nop]->cmd_link);
1201 writew(0, &p->xmit_cmds[0]->cmd_status);
1202 writew(0, &p->nop_cmds[next_nop]->cmd_status);
1203
1204 writew(make16(p->xmit_cmds[0]), &p->nop_cmds[p->nop_point]->cmd_link);
1205 p->nop_point = next_nop;
1206 dev_kfree_skb(skb);
1207 # endif
1208 #else
1209 writew(TBD_LAST | len, &p->xmit_buffs[p->xmit_count]->size);
1210 next_nop = p->xmit_count + 1
1211 if (next_nop == NUM_XMIT_BUFFS)
1212 next_nop = 0;
1213 writew(0, &p->xmit_cmds[p->xmit_count]->cmd_status);
1214 /* linkpointer of xmit-command already points to next nop cmd */
1215 writew(make16(p->nop_cmds[next_nop]),
1216 &p->nop_cmds[next_nop]->cmd_link);
1217 writew(0, &p->nop_cmds[next_nop]->cmd_status);
1218 writew(make16(p->xmit_cmds[p->xmit_count]),
1219 &p->nop_cmds[p->xmit_count]->cmd_link);
1220 p->xmit_count = next_nop;
1221 {
1222 unsigned long flags;
1223 spin_lock_irqsave(&p->spinlock);
1224 if (p->xmit_count != p->xmit_last)
1225 netif_wake_queue(dev);
1226 spin_unlock_irqrestore(&p->spinlock);
1227 }
1228 dev_kfree_skb(skb);
1229 #endif
1230 return NETDEV_TX_OK;
1231 }
1232
1233 /*******************************************
1234 * Someone wanna have the statistics
1235 */
1236
1237 static struct net_device_stats *ni52_get_stats(struct net_device *dev)
1238 {
1239 struct priv *p = netdev_priv(dev);
1240 unsigned short crc, aln, rsc, ovrn;
1241
1242 /* Get error-statistics from the ni82586 */
1243 crc = readw(&p->scb->crc_errs);
1244 writew(0, &p->scb->crc_errs);
1245 aln = readw(&p->scb->aln_errs);
1246 writew(0, &p->scb->aln_errs);
1247 rsc = readw(&p->scb->rsc_errs);
1248 writew(0, &p->scb->rsc_errs);
1249 ovrn = readw(&p->scb->ovrn_errs);
1250 writew(0, &p->scb->ovrn_errs);
1251
1252 dev->stats.rx_crc_errors += crc;
1253 dev->stats.rx_fifo_errors += ovrn;
1254 dev->stats.rx_frame_errors += aln;
1255 dev->stats.rx_dropped += rsc;
1256
1257 return &dev->stats;
1258 }
1259
1260 /********************************************************
1261 * Set MC list ..
1262 */
1263
1264 static void set_multicast_list(struct net_device *dev)
1265 {
1266 netif_stop_queue(dev);
1267 ni_disint();
1268 alloc586(dev);
1269 init586(dev);
1270 startrecv586(dev);
1271 ni_enaint();
1272 netif_wake_queue(dev);
1273 }
1274
1275 #ifdef MODULE
1276 static struct net_device *dev_ni52;
1277
1278 module_param(io, int, 0);
1279 module_param(irq, int, 0);
1280 module_param(memstart, long, 0);
1281 module_param(memend, long, 0);
1282 MODULE_PARM_DESC(io, "NI5210 I/O base address,required");
1283 MODULE_PARM_DESC(irq, "NI5210 IRQ number,required");
1284 MODULE_PARM_DESC(memstart, "NI5210 memory base address,required");
1285 MODULE_PARM_DESC(memend, "NI5210 memory end address,required");
1286
1287 int __init init_module(void)
1288 {
1289 if (io <= 0x0 || !memend || !memstart || irq < 2) {
1290 printk(KERN_ERR "ni52: Autoprobing not allowed for modules.\n");
1291 printk(KERN_ERR "ni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n");
1292 return -ENODEV;
1293 }
1294 dev_ni52 = ni52_probe(-1);
1295 if (IS_ERR(dev_ni52))
1296 return PTR_ERR(dev_ni52);
1297 return 0;
1298 }
1299
1300 void __exit cleanup_module(void)
1301 {
1302 struct priv *p = netdev_priv(dev_ni52);
1303 unregister_netdev(dev_ni52);
1304 iounmap(p->mapped);
1305 release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE);
1306 free_netdev(dev_ni52);
1307 }
1308 #endif /* MODULE */
1309
1310 MODULE_LICENSE("GPL");
Tomato firmware and modifications.