blob: 6b3384a24f072dbd6b7b4e5c50d4ff6dc5483178 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 * compile with:
13 * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni52.c
14 * run with e.g:
15 * insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000
16 *
17 * CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!.
18 *
19 * If you find a bug, please report me:
20 * The kernel panic output and any kmsg from the ni52 driver
21 * the ni5210-driver-version and the linux-kernel version
22 * how many shared memory (memsize) on the netcard,
23 * bootprom: yes/no, base_addr, mem_start
24 * maybe the ni5210-card revision and the i82586 version
25 *
26 * autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340
27 * mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000,
28 * 0xd8000,0xcc000,0xce000,0xda000,0xdc000
29 *
30 * sources:
31 * skeleton.c from Donald Becker
32 *
33 * I have also done a look in the following sources: (mail me if you need them)
34 * crynwr-packet-driver by Russ Nelson
35 * Garret A. Wollman's (fourth) i82586-driver for BSD
36 * (before getting an i82596 (yes 596 not 586) manual, the existing drivers helped
37 * me a lot to understand this tricky chip.)
38 *
39 * Known Problems:
40 * The internal sysbus seems to be slow. So we often lose packets because of
41 * overruns while receiving from a fast remote host.
42 * This can slow down TCP connections. Maybe the newer ni5210 cards are better.
43 * my experience is, that if a machine sends with more than about 500-600K/s
44 * the fifo/sysbus overflows.
45 *
46 * IMPORTANT NOTE:
47 * On fast networks, it's a (very) good idea to have 16K shared memory. With
48 * 8K, we can store only 4 receive frames, so it can (easily) happen that a remote
49 * machine 'overruns' our system.
50 *
51 * Known i82586/card problems (I'm sure, there are many more!):
52 * Running the NOP-mode, the i82586 sometimes seems to forget to report
53 * every xmit-interrupt until we restart the CU.
54 * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit
55 * in the RBD-Struct which indicates an end of the RBD queue.
56 * Instead, the RU fetches another (randomly selected and
57 * usually used) RBD and begins to fill it. (Maybe, this happens only if
58 * the last buffer from the previous RFD fits exact into the queue and
59 * the next RFD can't fetch an initial RBD. Anyone knows more? )
60 *
61 * results from ftp performance tests with Linux 1.2.5
62 * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s)
63 * sending in NOP-mode: peak performance up to 530K/s (but better don't run this mode)
64 */
65
66/*
67 * 29.Sept.96: virt_to_bus changes for new memory scheme
68 * 19.Feb.96: more Mcast changes, module support (MH)
69 *
70 * 18.Nov.95: Mcast changes (AC).
71 *
72 * 23.April.95: fixed(?) receiving problems by configuring a RFD more
73 * than the number of RBD's. Can maybe cause other problems.
74 * 18.April.95: Added MODULE support (MH)
75 * 17.April.95: MC related changes in init586() and set_multicast_list().
76 * removed use of 'jiffies' in init586() (MH)
77 *
78 * 19.Sep.94: Added Multicast support (not tested yet) (MH)
79 *
80 * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling.
81 * Now, every RFD has exact one RBD. (MH)
82 *
83 * 14.Sep.94: added promiscuous mode, a few cleanups (MH)
84 *
85 * 19.Aug.94: changed request_irq() parameter (MH)
86 *
87 * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH)
88 *
89 * 19.July.94: lotsa cleanups .. (MH)
90 *
91 * 17.July.94: some patches ... verified to run with 1.1.29 (MH)
92 *
93 * 4.July.94: patches for Linux 1.1.24 (MH)
94 *
95 * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH)
96 *
97 * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff, too (MH)
98 *
99 * < 30.Sep.93: first versions
100 */
101
102static int debuglevel; /* debug-printk 0: off 1: a few 2: more */
103static int automatic_resume; /* experimental .. better should be zero */
104static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */
105static int fifo=0x8; /* don't change */
106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107#include <linux/module.h>
108#include <linux/kernel.h>
109#include <linux/string.h>
110#include <linux/errno.h>
111#include <linux/ioport.h>
112#include <linux/slab.h>
113#include <linux/interrupt.h>
114#include <linux/delay.h>
115#include <linux/init.h>
116#include <linux/bitops.h>
117#include <asm/io.h>
118
119#include <linux/netdevice.h>
120#include <linux/etherdevice.h>
121#include <linux/skbuff.h>
122
123#include "ni52.h"
124
125#define DRV_NAME "ni52"
126
127#define DEBUG /* debug on */
128#define SYSBUSVAL 1 /* 8 Bit */
129
130#define ni_attn586() {outb(0,dev->base_addr+NI52_ATTENTION);}
131#define ni_reset586() {outb(0,dev->base_addr+NI52_RESET);}
132#define ni_disint() {outb(0,dev->base_addr+NI52_INTDIS);}
133#define ni_enaint() {outb(0,dev->base_addr+NI52_INTENA);}
134
135#define make32(ptr16) (p->memtop + (short) (ptr16) )
136#define make24(ptr32) ( ((char *) (ptr32)) - p->base)
137#define make16(ptr32) ((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop ))
138
139/******************* how to calculate the buffers *****************************
140
141 * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
142 * --------------- in a different (more stable?) mode. Only in this mode it's
143 * possible to configure the driver with 'NO_NOPCOMMANDS'
144
145sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
146sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
147sizeof(rfd) = 24; sizeof(rbd) = 12;
148sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
149sizeof(nop_cmd) = 8;
150
151 * if you don't know the driver, better do not change these values: */
152
153#define RECV_BUFF_SIZE 1524 /* slightly oversized */
154#define XMIT_BUFF_SIZE 1524 /* slightly oversized */
155#define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
156#define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
157#define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
158#define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
159
160/**************************************************************************/
161
162/* different DELAYs */
163#define DELAY(x) mdelay(32 * x);
164#define DELAY_16(); { udelay(16); }
165#define DELAY_18(); { udelay(4); }
166
167/* wait for command with timeout: */
168#define WAIT_4_SCB_CMD() \
169{ int i; \
170 for(i=0;i<16384;i++) { \
171 if(!p->scb->cmd_cuc) break; \
172 DELAY_18(); \
173 if(i == 16383) { \
174 printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
175 if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
176
177#define WAIT_4_SCB_CMD_RUC() { int i; \
178 for(i=0;i<16384;i++) { \
179 if(!p->scb->cmd_ruc) break; \
180 DELAY_18(); \
181 if(i == 16383) { \
182 printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
183 if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
184
185#define WAIT_4_STAT_COMPL(addr) { int i; \
186 for(i=0;i<32767;i++) { \
187 if((addr)->cmd_status & STAT_COMPL) break; \
188 DELAY_16(); DELAY_16(); } }
189
190#define NI52_TOTAL_SIZE 16
191#define NI52_ADDR0 0x02
192#define NI52_ADDR1 0x07
193#define NI52_ADDR2 0x01
194
195static int ni52_probe1(struct net_device *dev,int ioaddr);
David Howells7d12e782006-10-05 14:55:46 +0100196static irqreturn_t ni52_interrupt(int irq,void *dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197static int ni52_open(struct net_device *dev);
198static int ni52_close(struct net_device *dev);
199static int ni52_send_packet(struct sk_buff *,struct net_device *);
200static struct net_device_stats *ni52_get_stats(struct net_device *dev);
201static void set_multicast_list(struct net_device *dev);
202static void ni52_timeout(struct net_device *dev);
203#if 0
204static void ni52_dump(struct net_device *,void *);
205#endif
206
207/* helper-functions */
208static int init586(struct net_device *dev);
209static int check586(struct net_device *dev,char *where,unsigned size);
210static void alloc586(struct net_device *dev);
211static void startrecv586(struct net_device *dev);
212static void *alloc_rfa(struct net_device *dev,void *ptr);
213static void ni52_rcv_int(struct net_device *dev);
214static void ni52_xmt_int(struct net_device *dev);
215static void ni52_rnr_int(struct net_device *dev);
216
217struct priv
218{
219 struct net_device_stats stats;
220 unsigned long base;
221 char *memtop;
222 long int lock;
223 int reseted;
224 volatile struct rfd_struct *rfd_last,*rfd_top,*rfd_first;
225 volatile struct scp_struct *scp; /* volatile is important */
226 volatile struct iscp_struct *iscp; /* volatile is important */
227 volatile struct scb_struct *scb; /* volatile is important */
228 volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];
229#if (NUM_XMIT_BUFFS == 1)
230 volatile struct transmit_cmd_struct *xmit_cmds[2];
231 volatile struct nop_cmd_struct *nop_cmds[2];
232#else
233 volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
234 volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
235#endif
236 volatile int nop_point,num_recv_buffs;
237 volatile char *xmit_cbuffs[NUM_XMIT_BUFFS];
238 volatile int xmit_count,xmit_last;
239};
240
241/**********************************************
242 * close device
243 */
244static int ni52_close(struct net_device *dev)
245{
246 free_irq(dev->irq, dev);
247
248 ni_reset586(); /* the hard way to stop the receiver */
249
250 netif_stop_queue(dev);
251
252 return 0;
253}
254
255/**********************************************
256 * open device
257 */
258static int ni52_open(struct net_device *dev)
259{
260 int ret;
261
262 ni_disint();
263 alloc586(dev);
264 init586(dev);
265 startrecv586(dev);
266 ni_enaint();
267
268 ret = request_irq(dev->irq, &ni52_interrupt,0,dev->name,dev);
269 if (ret)
270 {
271 ni_reset586();
272 return ret;
273 }
274
275 netif_start_queue(dev);
276
277 return 0; /* most done by init */
278}
279
280/**********************************************
281 * Check to see if there's an 82586 out there.
282 */
283static int check586(struct net_device *dev,char *where,unsigned size)
284{
285 struct priv pb;
286 struct priv *p = /* (struct priv *) dev->priv*/ &pb;
287 char *iscp_addrs[2];
288 int i;
289
290 p->base = (unsigned long) isa_bus_to_virt((unsigned long)where) + size - 0x01000000;
291 p->memtop = isa_bus_to_virt((unsigned long)where) + size;
292 p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
293 memset((char *)p->scp,0, sizeof(struct scp_struct));
294 for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
295 if(((char *)p->scp)[i])
296 return 0;
297 p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */
298 if(p->scp->sysbus != SYSBUSVAL)
299 return 0;
300
301 iscp_addrs[0] = isa_bus_to_virt((unsigned long)where);
302 iscp_addrs[1]= (char *) p->scp - sizeof(struct iscp_struct);
303
304 for(i=0;i<2;i++)
305 {
306 p->iscp = (struct iscp_struct *) iscp_addrs[i];
307 memset((char *)p->iscp,0, sizeof(struct iscp_struct));
308
309 p->scp->iscp = make24(p->iscp);
310 p->iscp->busy = 1;
311
312 ni_reset586();
313 ni_attn586();
314 DELAY(1); /* wait a while... */
315
316 if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
317 return 0;
318 }
319 return 1;
320}
321
322/******************************************************************
323 * set iscp at the right place, called by ni52_probe1 and open586.
324 */
325static void alloc586(struct net_device *dev)
326{
327 struct priv *p = (struct priv *) dev->priv;
328
329 ni_reset586();
330 DELAY(1);
331
332 p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
333 p->scb = (struct scb_struct *) isa_bus_to_virt(dev->mem_start);
334 p->iscp = (struct iscp_struct *) ((char *)p->scp - sizeof(struct iscp_struct));
335
336 memset((char *) p->iscp,0,sizeof(struct iscp_struct));
337 memset((char *) p->scp ,0,sizeof(struct scp_struct));
338
339 p->scp->iscp = make24(p->iscp);
340 p->scp->sysbus = SYSBUSVAL;
341 p->iscp->scb_offset = make16(p->scb);
342
343 p->iscp->busy = 1;
344 ni_reset586();
345 ni_attn586();
346
347 DELAY(1);
348
349 if(p->iscp->busy)
350 printk("%s: Init-Problems (alloc).\n",dev->name);
351
352 p->reseted = 0;
353
354 memset((char *)p->scb,0,sizeof(struct scb_struct));
355}
356
357/* set: io,irq,memstart,memend or set it when calling insmod */
358static int irq=9;
359static int io=0x300;
360static long memstart; /* e.g 0xd0000 */
361static long memend; /* e.g 0xd4000 */
362
363/**********************************************
364 * probe the ni5210-card
365 */
366struct net_device * __init ni52_probe(int unit)
367{
368 struct net_device *dev = alloc_etherdev(sizeof(struct priv));
369 static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0};
370 int *port;
371 int err = 0;
372
373 if (!dev)
374 return ERR_PTR(-ENOMEM);
375
376 if (unit >= 0) {
377 sprintf(dev->name, "eth%d", unit);
378 netdev_boot_setup_check(dev);
379 io = dev->base_addr;
380 irq = dev->irq;
381 memstart = dev->mem_start;
382 memend = dev->mem_end;
383 }
384
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 if (io > 0x1ff) { /* Check a single specified location. */
386 err = ni52_probe1(dev, io);
387 } else if (io > 0) { /* Don't probe at all. */
388 err = -ENXIO;
389 } else {
390 for (port = ports; *port && ni52_probe1(dev, *port) ; port++)
391 ;
392 if (*port)
393 goto got_it;
394#ifdef FULL_IO_PROBE
395 for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8)
396 ;
397 if (io < 0x400)
398 goto got_it;
399#endif
400 err = -ENODEV;
401 }
402 if (err)
403 goto out;
404got_it:
405 err = register_netdev(dev);
406 if (err)
407 goto out1;
408 return dev;
409out1:
410 release_region(dev->base_addr, NI52_TOTAL_SIZE);
411out:
412 free_netdev(dev);
413 return ERR_PTR(err);
414}
415
416static int __init ni52_probe1(struct net_device *dev,int ioaddr)
417{
418 int i, size, retval;
419
420 dev->base_addr = ioaddr;
421 dev->irq = irq;
422 dev->mem_start = memstart;
423 dev->mem_end = memend;
424
425 if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME))
426 return -EBUSY;
427
428 if( !(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) ||
429 !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) {
430 retval = -ENODEV;
431 goto out;
432 }
433
434 for(i=0;i<ETH_ALEN;i++)
435 dev->dev_addr[i] = inb(dev->base_addr+i);
436
437 if(dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1
438 || dev->dev_addr[2] != NI52_ADDR2) {
439 retval = -ENODEV;
440 goto out;
441 }
442
443 printk(KERN_INFO "%s: NI5210 found at %#3lx, ",dev->name,dev->base_addr);
444
445 /*
446 * check (or search) IO-Memory, 8K and 16K
447 */
448#ifdef MODULE
449 size = dev->mem_end - dev->mem_start;
450 if(size != 0x2000 && size != 0x4000) {
451 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n",dev->name,size);
452 retval = -ENODEV;
453 goto out;
454 }
455 if(!check586(dev,(char *) dev->mem_start,size)) {
456 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
457 retval = -ENODEV;
458 goto out;
459 }
460#else
461 if(dev->mem_start != 0) /* no auto-mem-probe */
462 {
463 size = 0x4000; /* check for 16K mem */
464 if(!check586(dev,(char *) dev->mem_start,size)) {
465 size = 0x2000; /* check for 8K mem */
466 if(!check586(dev,(char *) dev->mem_start,size)) {
467 printk("?memprobe, Can't find memory at 0x%lx!\n",dev->mem_start);
468 retval = -ENODEV;
469 goto out;
470 }
471 }
472 }
473 else
474 {
475 static long memaddrs[] = { 0xc8000,0xca000,0xcc000,0xce000,0xd0000,0xd2000,
476 0xd4000,0xd6000,0xd8000,0xda000,0xdc000, 0 };
477 for(i=0;;i++)
478 {
479 if(!memaddrs[i]) {
480 printk("?memprobe, Can't find io-memory!\n");
481 retval = -ENODEV;
482 goto out;
483 }
484 dev->mem_start = memaddrs[i];
485 size = 0x2000; /* check for 8K mem */
486 if(check586(dev,(char *)dev->mem_start,size)) /* 8K-check */
487 break;
488 size = 0x4000; /* check for 16K mem */
489 if(check586(dev,(char *)dev->mem_start,size)) /* 16K-check */
490 break;
491 }
492 }
493 dev->mem_end = dev->mem_start + size; /* set mem_end showed by 'ifconfig' */
494#endif
495
496 memset((char *) dev->priv,0,sizeof(struct priv));
497
498 ((struct priv *) (dev->priv))->memtop = isa_bus_to_virt(dev->mem_start) + size;
499 ((struct priv *) (dev->priv))->base = (unsigned long) isa_bus_to_virt(dev->mem_start) + size - 0x01000000;
500 alloc586(dev);
501
502 /* set number of receive-buffs according to memsize */
503 if(size == 0x2000)
504 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8;
505 else
506 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16;
507
508 printk("Memaddr: 0x%lx, Memsize: %d, ",dev->mem_start,size);
509
510 if(dev->irq < 2)
511 {
512 unsigned long irq_mask;
513
514 irq_mask = probe_irq_on();
515 ni_reset586();
516 ni_attn586();
517
518 mdelay(20);
519 dev->irq = probe_irq_off(irq_mask);
520 if(!dev->irq)
521 {
522 printk("?autoirq, Failed to detect IRQ line!\n");
523 retval = -EAGAIN;
524 goto out;
525 }
526 printk("IRQ %d (autodetected).\n",dev->irq);
527 }
528 else {
529 if(dev->irq == 2)
530 dev->irq = 9;
531 printk("IRQ %d (assigned and not checked!).\n",dev->irq);
532 }
533
534 dev->open = ni52_open;
535 dev->stop = ni52_close;
536 dev->get_stats = ni52_get_stats;
537 dev->tx_timeout = ni52_timeout;
538 dev->watchdog_timeo = HZ/20;
539 dev->hard_start_xmit = ni52_send_packet;
540 dev->set_multicast_list = set_multicast_list;
541
542 dev->if_port = 0;
543
544 return 0;
545out:
546 release_region(ioaddr, NI52_TOTAL_SIZE);
547 return retval;
548}
549
550/**********************************************
551 * init the chip (ni52-interrupt should be disabled?!)
552 * needs a correct 'allocated' memory
553 */
554
555static int init586(struct net_device *dev)
556{
557 void *ptr;
558 int i,result=0;
559 struct priv *p = (struct priv *) dev->priv;
560 volatile struct configure_cmd_struct *cfg_cmd;
561 volatile struct iasetup_cmd_struct *ias_cmd;
562 volatile struct tdr_cmd_struct *tdr_cmd;
563 volatile struct mcsetup_cmd_struct *mc_cmd;
564 struct dev_mc_list *dmi=dev->mc_list;
565 int num_addrs=dev->mc_count;
566
567 ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
568
569 cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
570 cfg_cmd->cmd_status = 0;
571 cfg_cmd->cmd_cmd = CMD_CONFIGURE | CMD_LAST;
572 cfg_cmd->cmd_link = 0xffff;
573
574 cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */
575 cfg_cmd->fifo = fifo; /* fifo-limit (8=tx:32/rx:64) */
576 cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */
577 cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
578 cfg_cmd->priority = 0x00;
579 cfg_cmd->ifs = 0x60;
580 cfg_cmd->time_low = 0x00;
581 cfg_cmd->time_high = 0xf2;
582 cfg_cmd->promisc = 0;
583 if(dev->flags & IFF_ALLMULTI) {
584 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
585 if(num_addrs > len) {
586 printk("%s: switching to promisc. mode\n",dev->name);
587 dev->flags|=IFF_PROMISC;
588 }
589 }
590 if(dev->flags&IFF_PROMISC)
591 {
592 cfg_cmd->promisc=1;
593 dev->flags|=IFF_PROMISC;
594 }
595 cfg_cmd->carr_coll = 0x00;
596
597 p->scb->cbl_offset = make16(cfg_cmd);
598 p->scb->cmd_ruc = 0;
599
600 p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
601 ni_attn586();
602
603 WAIT_4_STAT_COMPL(cfg_cmd);
604
605 if((cfg_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
606 {
607 printk("%s: configure command failed: %x\n",dev->name,cfg_cmd->cmd_status);
608 return 1;
609 }
610
611 /*
612 * individual address setup
613 */
614
615 ias_cmd = (struct iasetup_cmd_struct *)ptr;
616
617 ias_cmd->cmd_status = 0;
618 ias_cmd->cmd_cmd = CMD_IASETUP | CMD_LAST;
619 ias_cmd->cmd_link = 0xffff;
620
621 memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
622
623 p->scb->cbl_offset = make16(ias_cmd);
624
625 p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
626 ni_attn586();
627
628 WAIT_4_STAT_COMPL(ias_cmd);
629
630 if((ias_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
631 printk("%s (ni52): individual address setup command failed: %04x\n",dev->name,ias_cmd->cmd_status);
632 return 1;
633 }
634
635 /*
636 * TDR, wire check .. e.g. no resistor e.t.c
637 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400638
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 tdr_cmd = (struct tdr_cmd_struct *)ptr;
640
641 tdr_cmd->cmd_status = 0;
642 tdr_cmd->cmd_cmd = CMD_TDR | CMD_LAST;
643 tdr_cmd->cmd_link = 0xffff;
644 tdr_cmd->status = 0;
645
646 p->scb->cbl_offset = make16(tdr_cmd);
647 p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
648 ni_attn586();
649
650 WAIT_4_STAT_COMPL(tdr_cmd);
651
652 if(!(tdr_cmd->cmd_status & STAT_COMPL))
653 {
654 printk("%s: Problems while running the TDR.\n",dev->name);
655 }
656 else
657 {
658 DELAY_16(); /* wait for result */
659 result = tdr_cmd->status;
660
661 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
662 ni_attn586(); /* ack the interrupts */
663
664 if(result & TDR_LNK_OK)
665 ;
666 else if(result & TDR_XCVR_PRB)
667 printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
668 else if(result & TDR_ET_OPN)
669 printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
670 else if(result & TDR_ET_SRT)
671 {
672 if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
673 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
674 }
675 else
676 printk("%s: TDR: Unknown status %04x\n",dev->name,result);
677 }
678
679 /*
680 * Multicast setup
681 */
682 if(num_addrs && !(dev->flags & IFF_PROMISC) )
683 {
684 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
685 mc_cmd->cmd_status = 0;
686 mc_cmd->cmd_cmd = CMD_MCSETUP | CMD_LAST;
687 mc_cmd->cmd_link = 0xffff;
688 mc_cmd->mc_cnt = num_addrs * 6;
689
690 for(i=0;i<num_addrs;i++,dmi=dmi->next)
691 memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6);
692
693 p->scb->cbl_offset = make16(mc_cmd);
694 p->scb->cmd_cuc = CUC_START;
695 ni_attn586();
696
697 WAIT_4_STAT_COMPL(mc_cmd);
698
699 if( (mc_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
700 printk("%s: Can't apply multicast-address-list.\n",dev->name);
701 }
702
703 /*
704 * alloc nop/xmit-cmds
705 */
706#if (NUM_XMIT_BUFFS == 1)
707 for(i=0;i<2;i++)
708 {
709 p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
710 p->nop_cmds[i]->cmd_cmd = CMD_NOP;
711 p->nop_cmds[i]->cmd_status = 0;
712 p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
713 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
714 }
715#else
716 for(i=0;i<NUM_XMIT_BUFFS;i++)
717 {
718 p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
719 p->nop_cmds[i]->cmd_cmd = CMD_NOP;
720 p->nop_cmds[i]->cmd_status = 0;
721 p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
722 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
723 }
724#endif
725
726 ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
727
728 /*
729 * alloc xmit-buffs / init xmit_cmds
730 */
731 for(i=0;i<NUM_XMIT_BUFFS;i++)
732 {
733 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
734 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
735 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
736 ptr = (char *) ptr + XMIT_BUFF_SIZE;
737 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
738 ptr = (char *) ptr + sizeof(struct tbd_struct);
739 if((void *)ptr > (void *)p->iscp)
740 {
741 printk("%s: not enough shared-mem for your configuration!\n",dev->name);
742 return 1;
743 }
744 memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
745 memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
746 p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
747 p->xmit_cmds[i]->cmd_status = STAT_COMPL;
748 p->xmit_cmds[i]->cmd_cmd = CMD_XMIT | CMD_INT;
749 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
750 p->xmit_buffs[i]->next = 0xffff;
751 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
752 }
753
754 p->xmit_count = 0;
755 p->xmit_last = 0;
756#ifndef NO_NOPCOMMANDS
757 p->nop_point = 0;
758#endif
759
760 /*
761 * 'start transmitter'
762 */
763#ifndef NO_NOPCOMMANDS
764 p->scb->cbl_offset = make16(p->nop_cmds[0]);
765 p->scb->cmd_cuc = CUC_START;
766 ni_attn586();
767 WAIT_4_SCB_CMD();
768#else
769 p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
770 p->xmit_cmds[0]->cmd_cmd = CMD_XMIT | CMD_SUSPEND | CMD_INT;
771#endif
772
773 /*
774 * ack. interrupts
775 */
776 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
777 ni_attn586();
778 DELAY_16();
779
780 ni_enaint();
781
782 return 0;
783}
784
785/******************************************************
786 * This is a helper routine for ni52_rnr_int() and init586().
787 * It sets up the Receive Frame Area (RFA).
788 */
789
790static void *alloc_rfa(struct net_device *dev,void *ptr)
791{
792 volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
793 volatile struct rbd_struct *rbd;
794 int i;
795 struct priv *p = (struct priv *) dev->priv;
796
797 memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
798 p->rfd_first = rfd;
799
800 for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
801 rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
802 rfd[i].rbd_offset = 0xffff;
803 }
804 rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */
805
806 ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
807
808 rbd = (struct rbd_struct *) ptr;
809 ptr = (void *) (rbd + p->num_recv_buffs);
810
811 /* clr descriptors */
812 memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
813
814 for(i=0;i<p->num_recv_buffs;i++)
815 {
816 rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
817 rbd[i].size = RECV_BUFF_SIZE;
818 rbd[i].buffer = make24(ptr);
819 ptr = (char *) ptr + RECV_BUFF_SIZE;
820 }
821
822 p->rfd_top = p->rfd_first;
823 p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
824
825 p->scb->rfa_offset = make16(p->rfd_first);
826 p->rfd_first->rbd_offset = make16(rbd);
827
828 return ptr;
829}
830
831
832/**************************************************
833 * Interrupt Handler ...
834 */
835
David Howells7d12e782006-10-05 14:55:46 +0100836static irqreturn_t ni52_interrupt(int irq,void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837{
838 struct net_device *dev = dev_id;
839 unsigned short stat;
840 int cnt=0;
841 struct priv *p;
842
843 if (!dev) {
844 printk ("ni5210-interrupt: irq %d for unknown device.\n",irq);
845 return IRQ_NONE;
846 }
847 p = (struct priv *) dev->priv;
848
849 if(debuglevel > 1)
850 printk("I");
851
852 WAIT_4_SCB_CMD(); /* wait for last command */
853
854 while((stat=p->scb->cus & STAT_MASK))
855 {
856 p->scb->cmd_cuc = stat;
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 {
864 printk("(R)");
865 if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
866 {
867 WAIT_4_SCB_CMD();
868 p->scb->cmd_ruc = RUC_RESUME;
869 ni_attn586();
870 WAIT_4_SCB_CMD_RUC();
871 }
872 else
873 {
874 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
875 ni52_rnr_int(dev);
876 }
877 }
878
879 if(stat & STAT_CX) /* command with I-bit set complete */
880 ni52_xmt_int(dev);
881
882#ifndef NO_NOPCOMMANDS
883 if(stat & STAT_CNA) /* CU went 'not ready' */
884 {
885 if(netif_running(dev))
886 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
887 }
888#endif
889
890 if(debuglevel > 1)
891 printk("%d",cnt++);
892
893 WAIT_4_SCB_CMD(); /* wait for ack. (ni52_xmt_int can be faster than ack!!) */
894 if(p->scb->cmd_cuc) /* timed out? */
895 {
896 printk("%s: Acknowledge timed out.\n",dev->name);
897 ni_disint();
898 break;
899 }
900 }
901
902 if(debuglevel > 1)
903 printk("i");
904 return IRQ_HANDLED;
905}
906
907/*******************************************************
908 * receive-interrupt
909 */
910
911static void ni52_rcv_int(struct net_device *dev)
912{
913 int status,cnt=0;
914 unsigned short totlen;
915 struct sk_buff *skb;
916 struct rbd_struct *rbd;
917 struct priv *p = (struct priv *) dev->priv;
918
919 if(debuglevel > 0)
920 printk("R");
921
922 for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
923 {
924 rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
925
926 if(status & RFD_OK) /* frame received without error? */
927 {
928 if( (totlen = rbd->status) & RBD_LAST) /* the first and the last buffer? */
929 {
930 totlen &= RBD_MASK; /* length of this frame */
931 rbd->status = 0;
932 skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
933 if(skb != NULL)
934 {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935 skb_reserve(skb,2);
936 skb_put(skb,totlen);
David S. Miller8c7b7fa2007-07-10 22:08:12 -0700937 skb_copy_to_linear_data(skb,(char *) p->base+(unsigned long) rbd->buffer,totlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938 skb->protocol=eth_type_trans(skb,dev);
939 netif_rx(skb);
940 dev->last_rx = jiffies;
941 p->stats.rx_packets++;
942 p->stats.rx_bytes += totlen;
943 }
944 else
945 p->stats.rx_dropped++;
946 }
947 else
948 {
949 int rstat;
950 /* free all RBD's until RBD_LAST is set */
951 totlen = 0;
952 while(!((rstat=rbd->status) & RBD_LAST))
953 {
954 totlen += rstat & RBD_MASK;
955 if(!rstat)
956 {
957 printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
958 break;
959 }
960 rbd->status = 0;
961 rbd = (struct rbd_struct *) make32(rbd->next);
962 }
963 totlen += rstat & RBD_MASK;
964 rbd->status = 0;
965 printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
966 p->stats.rx_dropped++;
967 }
968 }
969 else /* frame !(ok), only with 'save-bad-frames' */
970 {
971 printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
972 p->stats.rx_errors++;
973 }
974 p->rfd_top->stat_high = 0;
975 p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
976 p->rfd_top->rbd_offset = 0xffff;
977 p->rfd_last->last = 0; /* delete RFD_SUSP */
978 p->rfd_last = p->rfd_top;
979 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
980 p->scb->rfa_offset = make16(p->rfd_top);
981
982 if(debuglevel > 0)
983 printk("%d",cnt++);
984 }
985
986 if(automatic_resume)
987 {
988 WAIT_4_SCB_CMD();
989 p->scb->cmd_ruc = RUC_RESUME;
990 ni_attn586();
991 WAIT_4_SCB_CMD_RUC();
992 }
993
994#ifdef WAIT_4_BUSY
995 {
996 int i;
997 for(i=0;i<1024;i++)
998 {
999 if(p->rfd_top->status)
1000 break;
1001 DELAY_16();
1002 if(i == 1023)
1003 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
1004 }
1005 }
1006#endif
1007
1008#if 0
1009 if(!at_least_one)
1010 {
1011 int i;
1012 volatile struct rfd_struct *rfds=p->rfd_top;
1013 volatile struct rbd_struct *rbds;
1014 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
1015 for(i=0;i< (p->num_recv_buffs+4);i++)
1016 {
1017 rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
1018 printk("%04x:%04x ",rfds->status,rbds->status);
1019 rfds = (struct rfd_struct *) make32(rfds->next);
1020 }
1021 printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
1022 printk("\nerrs: %04x %04x rus: %02x, cus: %02x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->rus,(int)p->scb->cus);
1023 }
1024 old_at_least = at_least_one;
1025#endif
1026
1027 if(debuglevel > 0)
1028 printk("r");
1029}
1030
1031/**********************************************************
1032 * handle 'Receiver went not ready'.
1033 */
1034
1035static void ni52_rnr_int(struct net_device *dev)
1036{
1037 struct priv *p = (struct priv *) dev->priv;
1038
1039 p->stats.rx_errors++;
1040
1041 WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
1042 p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
1043 ni_attn586();
1044 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */
1045
1046 alloc_rfa(dev,(char *)p->rfd_first);
1047/* maybe add a check here, before restarting the RU */
1048 startrecv586(dev); /* restart RU */
1049
1050 printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
1051
1052}
1053
1054/**********************************************************
1055 * handle xmit - interrupt
1056 */
1057
1058static void ni52_xmt_int(struct net_device *dev)
1059{
1060 int status;
1061 struct priv *p = (struct priv *) dev->priv;
1062
1063 if(debuglevel > 0)
1064 printk("X");
1065
1066 status = p->xmit_cmds[p->xmit_last]->cmd_status;
1067 if(!(status & STAT_COMPL))
1068 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
1069
1070 if(status & STAT_OK)
1071 {
1072 p->stats.tx_packets++;
1073 p->stats.collisions += (status & TCMD_MAXCOLLMASK);
1074 }
1075 else
1076 {
1077 p->stats.tx_errors++;
1078 if(status & TCMD_LATECOLL) {
1079 printk("%s: late collision detected.\n",dev->name);
1080 p->stats.collisions++;
1081 }
1082 else if(status & TCMD_NOCARRIER) {
1083 p->stats.tx_carrier_errors++;
1084 printk("%s: no carrier detected.\n",dev->name);
1085 }
1086 else if(status & TCMD_LOSTCTS)
1087 printk("%s: loss of CTS detected.\n",dev->name);
1088 else if(status & TCMD_UNDERRUN) {
1089 p->stats.tx_fifo_errors++;
1090 printk("%s: DMA underrun detected.\n",dev->name);
1091 }
1092 else if(status & TCMD_MAXCOLL) {
1093 printk("%s: Max. collisions exceeded.\n",dev->name);
1094 p->stats.collisions += 16;
1095 }
1096 }
1097
1098#if (NUM_XMIT_BUFFS > 1)
1099 if( (++p->xmit_last) == NUM_XMIT_BUFFS)
1100 p->xmit_last = 0;
1101#endif
1102 netif_wake_queue(dev);
1103}
1104
1105/***********************************************************
1106 * (re)start the receiver
1107 */
1108
1109static void startrecv586(struct net_device *dev)
1110{
1111 struct priv *p = (struct priv *) dev->priv;
1112
1113 WAIT_4_SCB_CMD();
1114 WAIT_4_SCB_CMD_RUC();
1115 p->scb->rfa_offset = make16(p->rfd_first);
1116 p->scb->cmd_ruc = RUC_START;
1117 ni_attn586(); /* start cmd. */
1118 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */
1119}
1120
1121static void ni52_timeout(struct net_device *dev)
1122{
1123 struct priv *p = (struct priv *) dev->priv;
1124#ifndef NO_NOPCOMMANDS
1125 if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
1126 {
1127 netif_wake_queue(dev);
1128#ifdef DEBUG
1129 printk("%s: strange ... timeout with CU active?!?\n",dev->name);
1130 printk("%s: X0: %04x N0: %04x N1: %04x %d\n",dev->name,(int)p->xmit_cmds[0]->cmd_status,(int)p->nop_cmds[0]->cmd_status,(int)p->nop_cmds[1]->cmd_status,(int)p->nop_point);
1131#endif
1132 p->scb->cmd_cuc = CUC_ABORT;
1133 ni_attn586();
1134 WAIT_4_SCB_CMD();
1135 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
1136 p->scb->cmd_cuc = CUC_START;
1137 ni_attn586();
1138 WAIT_4_SCB_CMD();
1139 dev->trans_start = jiffies;
1140 return 0;
1141 }
1142#endif
1143 {
1144#ifdef DEBUG
1145 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
1146 printk("%s: command-stats: %04x %04x\n",dev->name,p->xmit_cmds[0]->cmd_status,p->xmit_cmds[1]->cmd_status);
1147 printk("%s: check, whether you set the right interrupt number!\n",dev->name);
1148#endif
1149 ni52_close(dev);
1150 ni52_open(dev);
1151 }
1152 dev->trans_start = jiffies;
1153}
1154
1155/******************************************************
1156 * send frame
1157 */
1158
1159static int ni52_send_packet(struct sk_buff *skb, struct net_device *dev)
1160{
1161 int len,i;
1162#ifndef NO_NOPCOMMANDS
1163 int next_nop;
1164#endif
1165 struct priv *p = (struct priv *) dev->priv;
1166
1167 if(skb->len > XMIT_BUFF_SIZE)
1168 {
1169 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1170 return 0;
1171 }
1172
1173 netif_stop_queue(dev);
1174
1175#if(NUM_XMIT_BUFFS > 1)
1176 if(test_and_set_bit(0,(void *) &p->lock)) {
1177 printk("%s: Queue was locked\n",dev->name);
1178 return 1;
1179 }
1180 else
1181#endif
1182 {
David S. Miller3dbad802007-03-29 19:16:03 -07001183 skb_copy_from_linear_data(skb, (char *) p->xmit_cbuffs[p->xmit_count], skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001184 len = skb->len;
1185 if (len < ETH_ZLEN) {
1186 len = ETH_ZLEN;
1187 memset((char *)p->xmit_cbuffs[p->xmit_count]+skb->len, 0, len - skb->len);
1188 }
1189
1190#if (NUM_XMIT_BUFFS == 1)
1191# ifdef NO_NOPCOMMANDS
1192
1193#ifdef DEBUG
1194 if(p->scb->cus & CU_ACTIVE)
1195 {
1196 printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1197 printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,p->xmit_cmds[0]->cmd_status);
1198 }
1199#endif
1200
1201 p->xmit_buffs[0]->size = TBD_LAST | len;
1202 for(i=0;i<16;i++)
1203 {
1204 p->xmit_cmds[0]->cmd_status = 0;
1205 WAIT_4_SCB_CMD();
1206 if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1207 p->scb->cmd_cuc = CUC_RESUME;
1208 else
1209 {
1210 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1211 p->scb->cmd_cuc = CUC_START;
1212 }
1213
1214 ni_attn586();
1215 dev->trans_start = jiffies;
1216 if(!i)
1217 dev_kfree_skb(skb);
1218 WAIT_4_SCB_CMD();
1219 if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
1220 break;
1221 if(p->xmit_cmds[0]->cmd_status)
1222 break;
1223 if(i==15)
1224 printk("%s: Can't start transmit-command.\n",dev->name);
1225 }
1226# else
1227 next_nop = (p->nop_point + 1) & 0x1;
1228 p->xmit_buffs[0]->size = TBD_LAST | len;
1229
1230 p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link
1231 = make16((p->nop_cmds[next_nop]));
1232 p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1233
1234 p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1235 dev->trans_start = jiffies;
1236 p->nop_point = next_nop;
1237 dev_kfree_skb(skb);
1238# endif
1239#else
1240 p->xmit_buffs[p->xmit_count]->size = TBD_LAST | len;
1241 if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1242 next_nop = 0;
1243
1244 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1245 /* linkpointer of xmit-command already points to next nop cmd */
1246 p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1247 p->nop_cmds[next_nop]->cmd_status = 0;
1248
1249 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1250 dev->trans_start = jiffies;
1251 p->xmit_count = next_nop;
1252
1253 {
1254 unsigned long flags;
1255 save_flags(flags);
1256 cli();
1257 if(p->xmit_count != p->xmit_last)
1258 netif_wake_queue(dev);
1259 p->lock = 0;
1260 restore_flags(flags);
1261 }
1262 dev_kfree_skb(skb);
1263#endif
1264 }
1265 return 0;
1266}
1267
1268/*******************************************
1269 * Someone wanna have the statistics
1270 */
1271
1272static struct net_device_stats *ni52_get_stats(struct net_device *dev)
1273{
1274 struct priv *p = (struct priv *) dev->priv;
1275 unsigned short crc,aln,rsc,ovrn;
1276
1277 crc = p->scb->crc_errs; /* get error-statistic from the ni82586 */
1278 p->scb->crc_errs = 0;
1279 aln = p->scb->aln_errs;
1280 p->scb->aln_errs = 0;
1281 rsc = p->scb->rsc_errs;
1282 p->scb->rsc_errs = 0;
1283 ovrn = p->scb->ovrn_errs;
1284 p->scb->ovrn_errs = 0;
1285
1286 p->stats.rx_crc_errors += crc;
1287 p->stats.rx_fifo_errors += ovrn;
1288 p->stats.rx_frame_errors += aln;
1289 p->stats.rx_dropped += rsc;
1290
1291 return &p->stats;
1292}
1293
1294/********************************************************
1295 * Set MC list ..
1296 */
1297
1298static void set_multicast_list(struct net_device *dev)
1299{
1300 netif_stop_queue(dev);
1301 ni_disint();
1302 alloc586(dev);
1303 init586(dev);
1304 startrecv586(dev);
1305 ni_enaint();
1306 netif_wake_queue(dev);
1307}
1308
1309#ifdef MODULE
1310static struct net_device *dev_ni52;
1311
1312module_param(io, int, 0);
1313module_param(irq, int, 0);
1314module_param(memstart, long, 0);
1315module_param(memend, long, 0);
1316MODULE_PARM_DESC(io, "NI5210 I/O base address,required");
1317MODULE_PARM_DESC(irq, "NI5210 IRQ number,required");
1318MODULE_PARM_DESC(memstart, "NI5210 memory base address,required");
1319MODULE_PARM_DESC(memend, "NI5210 memory end address,required");
1320
Andrew Morton19a86642006-08-14 23:00:05 -07001321int __init init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322{
1323 if(io <= 0x0 || !memend || !memstart || irq < 2) {
1324 printk("ni52: Autoprobing not allowed for modules.\nni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n");
1325 return -ENODEV;
1326 }
1327 dev_ni52 = ni52_probe(-1);
1328 if (IS_ERR(dev_ni52))
1329 return PTR_ERR(dev_ni52);
1330 return 0;
1331}
1332
Al Viroafc8eb42006-06-14 18:50:53 -04001333void __exit cleanup_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334{
1335 unregister_netdev(dev_ni52);
1336 release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE);
1337 free_netdev(dev_ni52);
1338}
1339#endif /* MODULE */
1340
1341#if 0
1342/*
1343 * DUMP .. we expect a not running CMD unit and enough space
1344 */
1345void ni52_dump(struct net_device *dev,void *ptr)
1346{
1347 struct priv *p = (struct priv *) dev->priv;
1348 struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1349 int i;
1350
1351 p->scb->cmd_cuc = CUC_ABORT;
1352 ni_attn586();
1353 WAIT_4_SCB_CMD();
1354 WAIT_4_SCB_CMD_RUC();
1355
1356 dump_cmd->cmd_status = 0;
1357 dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1358 dump_cmd->dump_offset = make16((dump_cmd + 1));
1359 dump_cmd->cmd_link = 0xffff;
1360
1361 p->scb->cbl_offset = make16(dump_cmd);
1362 p->scb->cmd_cuc = CUC_START;
1363 ni_attn586();
1364 WAIT_4_STAT_COMPL(dump_cmd);
1365
1366 if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1367 printk("%s: Can't get dump information.\n",dev->name);
1368
1369 for(i=0;i<170;i++) {
1370 printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1371 if(i % 24 == 23)
1372 printk("\n");
1373 }
1374 printk("\n");
1375}
1376#endif
1377MODULE_LICENSE("GPL");
1378
1379/*
1380 * END: linux/drivers/net/ni52.c
1381 */