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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/ni52.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/ni52.c')
-rw-r--r--drivers/net/ni52.c1386
1 files changed, 1386 insertions, 0 deletions
diff --git a/drivers/net/ni52.c b/drivers/net/ni52.c
new file mode 100644
index 000000000000..fa854c8fde75
--- /dev/null
+++ b/drivers/net/ni52.c
@@ -0,0 +1,1386 @@
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 * 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
107/* #define REALLY_SLOW_IO */
108
109#include <linux/module.h>
110#include <linux/kernel.h>
111#include <linux/string.h>
112#include <linux/errno.h>
113#include <linux/ioport.h>
114#include <linux/slab.h>
115#include <linux/interrupt.h>
116#include <linux/delay.h>
117#include <linux/init.h>
118#include <linux/bitops.h>
119#include <asm/io.h>
120
121#include <linux/netdevice.h>
122#include <linux/etherdevice.h>
123#include <linux/skbuff.h>
124
125#include "ni52.h"
126
127#define DRV_NAME "ni52"
128
129#define DEBUG /* debug on */
130#define SYSBUSVAL 1 /* 8 Bit */
131
132#define ni_attn586() {outb(0,dev->base_addr+NI52_ATTENTION);}
133#define ni_reset586() {outb(0,dev->base_addr+NI52_RESET);}
134#define ni_disint() {outb(0,dev->base_addr+NI52_INTDIS);}
135#define ni_enaint() {outb(0,dev->base_addr+NI52_INTENA);}
136
137#define make32(ptr16) (p->memtop + (short) (ptr16) )
138#define make24(ptr32) ( ((char *) (ptr32)) - p->base)
139#define make16(ptr32) ((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop ))
140
141/******************* how to calculate the buffers *****************************
142
143 * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
144 * --------------- in a different (more stable?) mode. Only in this mode it's
145 * possible to configure the driver with 'NO_NOPCOMMANDS'
146
147sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
148sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
149sizeof(rfd) = 24; sizeof(rbd) = 12;
150sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
151sizeof(nop_cmd) = 8;
152
153 * if you don't know the driver, better do not change these values: */
154
155#define RECV_BUFF_SIZE 1524 /* slightly oversized */
156#define XMIT_BUFF_SIZE 1524 /* slightly oversized */
157#define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
158#define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
159#define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
160#define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
161
162/**************************************************************************/
163
164/* different DELAYs */
165#define DELAY(x) mdelay(32 * x);
166#define DELAY_16(); { udelay(16); }
167#define DELAY_18(); { udelay(4); }
168
169/* wait for command with timeout: */
170#define WAIT_4_SCB_CMD() \
171{ int i; \
172 for(i=0;i<16384;i++) { \
173 if(!p->scb->cmd_cuc) break; \
174 DELAY_18(); \
175 if(i == 16383) { \
176 printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
177 if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
178
179#define WAIT_4_SCB_CMD_RUC() { int i; \
180 for(i=0;i<16384;i++) { \
181 if(!p->scb->cmd_ruc) break; \
182 DELAY_18(); \
183 if(i == 16383) { \
184 printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
185 if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
186
187#define WAIT_4_STAT_COMPL(addr) { int i; \
188 for(i=0;i<32767;i++) { \
189 if((addr)->cmd_status & STAT_COMPL) break; \
190 DELAY_16(); DELAY_16(); } }
191
192#define NI52_TOTAL_SIZE 16
193#define NI52_ADDR0 0x02
194#define NI52_ADDR1 0x07
195#define NI52_ADDR2 0x01
196
197static int ni52_probe1(struct net_device *dev,int ioaddr);
198static irqreturn_t ni52_interrupt(int irq,void *dev_id,struct pt_regs *reg_ptr);
199static int ni52_open(struct net_device *dev);
200static int ni52_close(struct net_device *dev);
201static int ni52_send_packet(struct sk_buff *,struct net_device *);
202static struct net_device_stats *ni52_get_stats(struct net_device *dev);
203static void set_multicast_list(struct net_device *dev);
204static void ni52_timeout(struct net_device *dev);
205#if 0
206static void ni52_dump(struct net_device *,void *);
207#endif
208
209/* helper-functions */
210static int init586(struct net_device *dev);
211static int check586(struct net_device *dev,char *where,unsigned size);
212static void alloc586(struct net_device *dev);
213static void startrecv586(struct net_device *dev);
214static void *alloc_rfa(struct net_device *dev,void *ptr);
215static void ni52_rcv_int(struct net_device *dev);
216static void ni52_xmt_int(struct net_device *dev);
217static void ni52_rnr_int(struct net_device *dev);
218
219struct priv
220{
221 struct net_device_stats stats;
222 unsigned long base;
223 char *memtop;
224 long int lock;
225 int reseted;
226 volatile struct rfd_struct *rfd_last,*rfd_top,*rfd_first;
227 volatile struct scp_struct *scp; /* volatile is important */
228 volatile struct iscp_struct *iscp; /* volatile is important */
229 volatile struct scb_struct *scb; /* volatile is important */
230 volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];
231#if (NUM_XMIT_BUFFS == 1)
232 volatile struct transmit_cmd_struct *xmit_cmds[2];
233 volatile struct nop_cmd_struct *nop_cmds[2];
234#else
235 volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
236 volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
237#endif
238 volatile int nop_point,num_recv_buffs;
239 volatile char *xmit_cbuffs[NUM_XMIT_BUFFS];
240 volatile int xmit_count,xmit_last;
241};
242
243/**********************************************
244 * close device
245 */
246static int ni52_close(struct net_device *dev)
247{
248 free_irq(dev->irq, dev);
249
250 ni_reset586(); /* the hard way to stop the receiver */
251
252 netif_stop_queue(dev);
253
254 return 0;
255}
256
257/**********************************************
258 * open device
259 */
260static int ni52_open(struct net_device *dev)
261{
262 int ret;
263
264 ni_disint();
265 alloc586(dev);
266 init586(dev);
267 startrecv586(dev);
268 ni_enaint();
269
270 ret = request_irq(dev->irq, &ni52_interrupt,0,dev->name,dev);
271 if (ret)
272 {
273 ni_reset586();
274 return ret;
275 }
276
277 netif_start_queue(dev);
278
279 return 0; /* most done by init */
280}
281
282/**********************************************
283 * Check to see if there's an 82586 out there.
284 */
285static int check586(struct net_device *dev,char *where,unsigned size)
286{
287 struct priv pb;
288 struct priv *p = /* (struct priv *) dev->priv*/ &pb;
289 char *iscp_addrs[2];
290 int i;
291
292 p->base = (unsigned long) isa_bus_to_virt((unsigned long)where) + size - 0x01000000;
293 p->memtop = isa_bus_to_virt((unsigned long)where) + size;
294 p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
295 memset((char *)p->scp,0, sizeof(struct scp_struct));
296 for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
297 if(((char *)p->scp)[i])
298 return 0;
299 p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */
300 if(p->scp->sysbus != SYSBUSVAL)
301 return 0;
302
303 iscp_addrs[0] = isa_bus_to_virt((unsigned long)where);
304 iscp_addrs[1]= (char *) p->scp - sizeof(struct iscp_struct);
305
306 for(i=0;i<2;i++)
307 {
308 p->iscp = (struct iscp_struct *) iscp_addrs[i];
309 memset((char *)p->iscp,0, sizeof(struct iscp_struct));
310
311 p->scp->iscp = make24(p->iscp);
312 p->iscp->busy = 1;
313
314 ni_reset586();
315 ni_attn586();
316 DELAY(1); /* wait a while... */
317
318 if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
319 return 0;
320 }
321 return 1;
322}
323
324/******************************************************************
325 * set iscp at the right place, called by ni52_probe1 and open586.
326 */
327static void alloc586(struct net_device *dev)
328{
329 struct priv *p = (struct priv *) dev->priv;
330
331 ni_reset586();
332 DELAY(1);
333
334 p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
335 p->scb = (struct scb_struct *) isa_bus_to_virt(dev->mem_start);
336 p->iscp = (struct iscp_struct *) ((char *)p->scp - sizeof(struct iscp_struct));
337
338 memset((char *) p->iscp,0,sizeof(struct iscp_struct));
339 memset((char *) p->scp ,0,sizeof(struct scp_struct));
340
341 p->scp->iscp = make24(p->iscp);
342 p->scp->sysbus = SYSBUSVAL;
343 p->iscp->scb_offset = make16(p->scb);
344
345 p->iscp->busy = 1;
346 ni_reset586();
347 ni_attn586();
348
349 DELAY(1);
350
351 if(p->iscp->busy)
352 printk("%s: Init-Problems (alloc).\n",dev->name);
353
354 p->reseted = 0;
355
356 memset((char *)p->scb,0,sizeof(struct scb_struct));
357}
358
359/* set: io,irq,memstart,memend or set it when calling insmod */
360static int irq=9;
361static int io=0x300;
362static long memstart; /* e.g 0xd0000 */
363static long memend; /* e.g 0xd4000 */
364
365/**********************************************
366 * probe the ni5210-card
367 */
368struct net_device * __init ni52_probe(int unit)
369{
370 struct net_device *dev = alloc_etherdev(sizeof(struct priv));
371 static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0};
372 int *port;
373 int err = 0;
374
375 if (!dev)
376 return ERR_PTR(-ENOMEM);
377
378 if (unit >= 0) {
379 sprintf(dev->name, "eth%d", unit);
380 netdev_boot_setup_check(dev);
381 io = dev->base_addr;
382 irq = dev->irq;
383 memstart = dev->mem_start;
384 memend = dev->mem_end;
385 }
386
387 SET_MODULE_OWNER(dev);
388
389 if (io > 0x1ff) { /* Check a single specified location. */
390 err = ni52_probe1(dev, io);
391 } else if (io > 0) { /* Don't probe at all. */
392 err = -ENXIO;
393 } else {
394 for (port = ports; *port && ni52_probe1(dev, *port) ; port++)
395 ;
396 if (*port)
397 goto got_it;
398#ifdef FULL_IO_PROBE
399 for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8)
400 ;
401 if (io < 0x400)
402 goto got_it;
403#endif
404 err = -ENODEV;
405 }
406 if (err)
407 goto out;
408got_it:
409 err = register_netdev(dev);
410 if (err)
411 goto out1;
412 return dev;
413out1:
414 release_region(dev->base_addr, NI52_TOTAL_SIZE);
415out:
416 free_netdev(dev);
417 return ERR_PTR(err);
418}
419
420static int __init ni52_probe1(struct net_device *dev,int ioaddr)
421{
422 int i, size, retval;
423
424 dev->base_addr = ioaddr;
425 dev->irq = irq;
426 dev->mem_start = memstart;
427 dev->mem_end = memend;
428
429 if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME))
430 return -EBUSY;
431
432 if( !(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) ||
433 !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) {
434 retval = -ENODEV;
435 goto out;
436 }
437
438 for(i=0;i<ETH_ALEN;i++)
439 dev->dev_addr[i] = inb(dev->base_addr+i);
440
441 if(dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1
442 || dev->dev_addr[2] != NI52_ADDR2) {
443 retval = -ENODEV;
444 goto out;
445 }
446
447 printk(KERN_INFO "%s: NI5210 found at %#3lx, ",dev->name,dev->base_addr);
448
449 /*
450 * check (or search) IO-Memory, 8K and 16K
451 */
452#ifdef MODULE
453 size = dev->mem_end - dev->mem_start;
454 if(size != 0x2000 && size != 0x4000) {
455 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n",dev->name,size);
456 retval = -ENODEV;
457 goto out;
458 }
459 if(!check586(dev,(char *) dev->mem_start,size)) {
460 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
461 retval = -ENODEV;
462 goto out;
463 }
464#else
465 if(dev->mem_start != 0) /* no auto-mem-probe */
466 {
467 size = 0x4000; /* check for 16K mem */
468 if(!check586(dev,(char *) dev->mem_start,size)) {
469 size = 0x2000; /* check for 8K mem */
470 if(!check586(dev,(char *) dev->mem_start,size)) {
471 printk("?memprobe, Can't find memory at 0x%lx!\n",dev->mem_start);
472 retval = -ENODEV;
473 goto out;
474 }
475 }
476 }
477 else
478 {
479 static long memaddrs[] = { 0xc8000,0xca000,0xcc000,0xce000,0xd0000,0xd2000,
480 0xd4000,0xd6000,0xd8000,0xda000,0xdc000, 0 };
481 for(i=0;;i++)
482 {
483 if(!memaddrs[i]) {
484 printk("?memprobe, Can't find io-memory!\n");
485 retval = -ENODEV;
486 goto out;
487 }
488 dev->mem_start = memaddrs[i];
489 size = 0x2000; /* check for 8K mem */
490 if(check586(dev,(char *)dev->mem_start,size)) /* 8K-check */
491 break;
492 size = 0x4000; /* check for 16K mem */
493 if(check586(dev,(char *)dev->mem_start,size)) /* 16K-check */
494 break;
495 }
496 }
497 dev->mem_end = dev->mem_start + size; /* set mem_end showed by 'ifconfig' */
498#endif
499
500 memset((char *) dev->priv,0,sizeof(struct priv));
501
502 ((struct priv *) (dev->priv))->memtop = isa_bus_to_virt(dev->mem_start) + size;
503 ((struct priv *) (dev->priv))->base = (unsigned long) isa_bus_to_virt(dev->mem_start) + size - 0x01000000;
504 alloc586(dev);
505
506 /* set number of receive-buffs according to memsize */
507 if(size == 0x2000)
508 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8;
509 else
510 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16;
511
512 printk("Memaddr: 0x%lx, Memsize: %d, ",dev->mem_start,size);
513
514 if(dev->irq < 2)
515 {
516 unsigned long irq_mask;
517
518 irq_mask = probe_irq_on();
519 ni_reset586();
520 ni_attn586();
521
522 mdelay(20);
523 dev->irq = probe_irq_off(irq_mask);
524 if(!dev->irq)
525 {
526 printk("?autoirq, Failed to detect IRQ line!\n");
527 retval = -EAGAIN;
528 goto out;
529 }
530 printk("IRQ %d (autodetected).\n",dev->irq);
531 }
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->open = ni52_open;
539 dev->stop = ni52_close;
540 dev->get_stats = ni52_get_stats;
541 dev->tx_timeout = ni52_timeout;
542 dev->watchdog_timeo = HZ/20;
543 dev->hard_start_xmit = ni52_send_packet;
544 dev->set_multicast_list = set_multicast_list;
545
546 dev->if_port = 0;
547
548 return 0;
549out:
550 release_region(ioaddr, NI52_TOTAL_SIZE);
551 return retval;
552}
553
554/**********************************************
555 * init the chip (ni52-interrupt should be disabled?!)
556 * needs a correct 'allocated' memory
557 */
558
559static int init586(struct net_device *dev)
560{
561 void *ptr;
562 int i,result=0;
563 struct priv *p = (struct priv *) dev->priv;
564 volatile struct configure_cmd_struct *cfg_cmd;
565 volatile struct iasetup_cmd_struct *ias_cmd;
566 volatile struct tdr_cmd_struct *tdr_cmd;
567 volatile struct mcsetup_cmd_struct *mc_cmd;
568 struct dev_mc_list *dmi=dev->mc_list;
569 int num_addrs=dev->mc_count;
570
571 ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
572
573 cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
574 cfg_cmd->cmd_status = 0;
575 cfg_cmd->cmd_cmd = CMD_CONFIGURE | CMD_LAST;
576 cfg_cmd->cmd_link = 0xffff;
577
578 cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */
579 cfg_cmd->fifo = fifo; /* fifo-limit (8=tx:32/rx:64) */
580 cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */
581 cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
582 cfg_cmd->priority = 0x00;
583 cfg_cmd->ifs = 0x60;
584 cfg_cmd->time_low = 0x00;
585 cfg_cmd->time_high = 0xf2;
586 cfg_cmd->promisc = 0;
587 if(dev->flags & IFF_ALLMULTI) {
588 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
589 if(num_addrs > len) {
590 printk("%s: switching to promisc. mode\n",dev->name);
591 dev->flags|=IFF_PROMISC;
592 }
593 }
594 if(dev->flags&IFF_PROMISC)
595 {
596 cfg_cmd->promisc=1;
597 dev->flags|=IFF_PROMISC;
598 }
599 cfg_cmd->carr_coll = 0x00;
600
601 p->scb->cbl_offset = make16(cfg_cmd);
602 p->scb->cmd_ruc = 0;
603
604 p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
605 ni_attn586();
606
607 WAIT_4_STAT_COMPL(cfg_cmd);
608
609 if((cfg_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
610 {
611 printk("%s: configure command failed: %x\n",dev->name,cfg_cmd->cmd_status);
612 return 1;
613 }
614
615 /*
616 * individual address setup
617 */
618
619 ias_cmd = (struct iasetup_cmd_struct *)ptr;
620
621 ias_cmd->cmd_status = 0;
622 ias_cmd->cmd_cmd = CMD_IASETUP | CMD_LAST;
623 ias_cmd->cmd_link = 0xffff;
624
625 memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
626
627 p->scb->cbl_offset = make16(ias_cmd);
628
629 p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
630 ni_attn586();
631
632 WAIT_4_STAT_COMPL(ias_cmd);
633
634 if((ias_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
635 printk("%s (ni52): individual address setup command failed: %04x\n",dev->name,ias_cmd->cmd_status);
636 return 1;
637 }
638
639 /*
640 * TDR, wire check .. e.g. no resistor e.t.c
641 */
642
643 tdr_cmd = (struct tdr_cmd_struct *)ptr;
644
645 tdr_cmd->cmd_status = 0;
646 tdr_cmd->cmd_cmd = CMD_TDR | CMD_LAST;
647 tdr_cmd->cmd_link = 0xffff;
648 tdr_cmd->status = 0;
649
650 p->scb->cbl_offset = make16(tdr_cmd);
651 p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
652 ni_attn586();
653
654 WAIT_4_STAT_COMPL(tdr_cmd);
655
656 if(!(tdr_cmd->cmd_status & STAT_COMPL))
657 {
658 printk("%s: Problems while running the TDR.\n",dev->name);
659 }
660 else
661 {
662 DELAY_16(); /* wait for result */
663 result = tdr_cmd->status;
664
665 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
666 ni_attn586(); /* ack the interrupts */
667
668 if(result & TDR_LNK_OK)
669 ;
670 else if(result & TDR_XCVR_PRB)
671 printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
672 else if(result & TDR_ET_OPN)
673 printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
674 else if(result & TDR_ET_SRT)
675 {
676 if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
677 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
678 }
679 else
680 printk("%s: TDR: Unknown status %04x\n",dev->name,result);
681 }
682
683 /*
684 * Multicast setup
685 */
686 if(num_addrs && !(dev->flags & IFF_PROMISC) )
687 {
688 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
689 mc_cmd->cmd_status = 0;
690 mc_cmd->cmd_cmd = CMD_MCSETUP | CMD_LAST;
691 mc_cmd->cmd_link = 0xffff;
692 mc_cmd->mc_cnt = num_addrs * 6;
693
694 for(i=0;i<num_addrs;i++,dmi=dmi->next)
695 memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6);
696
697 p->scb->cbl_offset = make16(mc_cmd);
698 p->scb->cmd_cuc = CUC_START;
699 ni_attn586();
700
701 WAIT_4_STAT_COMPL(mc_cmd);
702
703 if( (mc_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
704 printk("%s: Can't apply multicast-address-list.\n",dev->name);
705 }
706
707 /*
708 * alloc nop/xmit-cmds
709 */
710#if (NUM_XMIT_BUFFS == 1)
711 for(i=0;i<2;i++)
712 {
713 p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
714 p->nop_cmds[i]->cmd_cmd = CMD_NOP;
715 p->nop_cmds[i]->cmd_status = 0;
716 p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
717 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
718 }
719#else
720 for(i=0;i<NUM_XMIT_BUFFS;i++)
721 {
722 p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
723 p->nop_cmds[i]->cmd_cmd = CMD_NOP;
724 p->nop_cmds[i]->cmd_status = 0;
725 p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
726 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
727 }
728#endif
729
730 ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
731
732 /*
733 * alloc xmit-buffs / init xmit_cmds
734 */
735 for(i=0;i<NUM_XMIT_BUFFS;i++)
736 {
737 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
738 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
739 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
740 ptr = (char *) ptr + XMIT_BUFF_SIZE;
741 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
742 ptr = (char *) ptr + sizeof(struct tbd_struct);
743 if((void *)ptr > (void *)p->iscp)
744 {
745 printk("%s: not enough shared-mem for your configuration!\n",dev->name);
746 return 1;
747 }
748 memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
749 memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
750 p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
751 p->xmit_cmds[i]->cmd_status = STAT_COMPL;
752 p->xmit_cmds[i]->cmd_cmd = CMD_XMIT | CMD_INT;
753 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
754 p->xmit_buffs[i]->next = 0xffff;
755 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
756 }
757
758 p->xmit_count = 0;
759 p->xmit_last = 0;
760#ifndef NO_NOPCOMMANDS
761 p->nop_point = 0;
762#endif
763
764 /*
765 * 'start transmitter'
766 */
767#ifndef NO_NOPCOMMANDS
768 p->scb->cbl_offset = make16(p->nop_cmds[0]);
769 p->scb->cmd_cuc = CUC_START;
770 ni_attn586();
771 WAIT_4_SCB_CMD();
772#else
773 p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
774 p->xmit_cmds[0]->cmd_cmd = CMD_XMIT | CMD_SUSPEND | CMD_INT;
775#endif
776
777 /*
778 * ack. interrupts
779 */
780 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
781 ni_attn586();
782 DELAY_16();
783
784 ni_enaint();
785
786 return 0;
787}
788
789/******************************************************
790 * This is a helper routine for ni52_rnr_int() and init586().
791 * It sets up the Receive Frame Area (RFA).
792 */
793
794static void *alloc_rfa(struct net_device *dev,void *ptr)
795{
796 volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
797 volatile struct rbd_struct *rbd;
798 int i;
799 struct priv *p = (struct priv *) dev->priv;
800
801 memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
802 p->rfd_first = rfd;
803
804 for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
805 rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
806 rfd[i].rbd_offset = 0xffff;
807 }
808 rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */
809
810 ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
811
812 rbd = (struct rbd_struct *) ptr;
813 ptr = (void *) (rbd + p->num_recv_buffs);
814
815 /* clr descriptors */
816 memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
817
818 for(i=0;i<p->num_recv_buffs;i++)
819 {
820 rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
821 rbd[i].size = RECV_BUFF_SIZE;
822 rbd[i].buffer = make24(ptr);
823 ptr = (char *) ptr + RECV_BUFF_SIZE;
824 }
825
826 p->rfd_top = p->rfd_first;
827 p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
828
829 p->scb->rfa_offset = make16(p->rfd_first);
830 p->rfd_first->rbd_offset = make16(rbd);
831
832 return ptr;
833}
834
835
836/**************************************************
837 * Interrupt Handler ...
838 */
839
840static irqreturn_t ni52_interrupt(int irq,void *dev_id,struct pt_regs *reg_ptr)
841{
842 struct net_device *dev = dev_id;
843 unsigned short stat;
844 int cnt=0;
845 struct priv *p;
846
847 if (!dev) {
848 printk ("ni5210-interrupt: irq %d for unknown device.\n",irq);
849 return IRQ_NONE;
850 }
851 p = (struct priv *) dev->priv;
852
853 if(debuglevel > 1)
854 printk("I");
855
856 WAIT_4_SCB_CMD(); /* wait for last command */
857
858 while((stat=p->scb->cus & STAT_MASK))
859 {
860 p->scb->cmd_cuc = stat;
861 ni_attn586();
862
863 if(stat & STAT_FR) /* received a frame */
864 ni52_rcv_int(dev);
865
866 if(stat & STAT_RNR) /* RU went 'not ready' */
867 {
868 printk("(R)");
869 if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
870 {
871 WAIT_4_SCB_CMD();
872 p->scb->cmd_ruc = RUC_RESUME;
873 ni_attn586();
874 WAIT_4_SCB_CMD_RUC();
875 }
876 else
877 {
878 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
879 ni52_rnr_int(dev);
880 }
881 }
882
883 if(stat & STAT_CX) /* command with I-bit set complete */
884 ni52_xmt_int(dev);
885
886#ifndef NO_NOPCOMMANDS
887 if(stat & STAT_CNA) /* CU went 'not ready' */
888 {
889 if(netif_running(dev))
890 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
891 }
892#endif
893
894 if(debuglevel > 1)
895 printk("%d",cnt++);
896
897 WAIT_4_SCB_CMD(); /* wait for ack. (ni52_xmt_int can be faster than ack!!) */
898 if(p->scb->cmd_cuc) /* timed out? */
899 {
900 printk("%s: Acknowledge timed out.\n",dev->name);
901 ni_disint();
902 break;
903 }
904 }
905
906 if(debuglevel > 1)
907 printk("i");
908 return IRQ_HANDLED;
909}
910
911/*******************************************************
912 * receive-interrupt
913 */
914
915static void ni52_rcv_int(struct net_device *dev)
916{
917 int status,cnt=0;
918 unsigned short totlen;
919 struct sk_buff *skb;
920 struct rbd_struct *rbd;
921 struct priv *p = (struct priv *) dev->priv;
922
923 if(debuglevel > 0)
924 printk("R");
925
926 for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
927 {
928 rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
929
930 if(status & RFD_OK) /* frame received without error? */
931 {
932 if( (totlen = rbd->status) & RBD_LAST) /* the first and the last buffer? */
933 {
934 totlen &= RBD_MASK; /* length of this frame */
935 rbd->status = 0;
936 skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
937 if(skb != NULL)
938 {
939 skb->dev = dev;
940 skb_reserve(skb,2);
941 skb_put(skb,totlen);
942 eth_copy_and_sum(skb,(char *) p->base+(unsigned long) rbd->buffer,totlen,0);
943 skb->protocol=eth_type_trans(skb,dev);
944 netif_rx(skb);
945 dev->last_rx = jiffies;
946 p->stats.rx_packets++;
947 p->stats.rx_bytes += totlen;
948 }
949 else
950 p->stats.rx_dropped++;
951 }
952 else
953 {
954 int rstat;
955 /* free all RBD's until RBD_LAST is set */
956 totlen = 0;
957 while(!((rstat=rbd->status) & RBD_LAST))
958 {
959 totlen += rstat & RBD_MASK;
960 if(!rstat)
961 {
962 printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
963 break;
964 }
965 rbd->status = 0;
966 rbd = (struct rbd_struct *) make32(rbd->next);
967 }
968 totlen += rstat & RBD_MASK;
969 rbd->status = 0;
970 printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
971 p->stats.rx_dropped++;
972 }
973 }
974 else /* frame !(ok), only with 'save-bad-frames' */
975 {
976 printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
977 p->stats.rx_errors++;
978 }
979 p->rfd_top->stat_high = 0;
980 p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
981 p->rfd_top->rbd_offset = 0xffff;
982 p->rfd_last->last = 0; /* delete RFD_SUSP */
983 p->rfd_last = p->rfd_top;
984 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
985 p->scb->rfa_offset = make16(p->rfd_top);
986
987 if(debuglevel > 0)
988 printk("%d",cnt++);
989 }
990
991 if(automatic_resume)
992 {
993 WAIT_4_SCB_CMD();
994 p->scb->cmd_ruc = RUC_RESUME;
995 ni_attn586();
996 WAIT_4_SCB_CMD_RUC();
997 }
998
999#ifdef WAIT_4_BUSY
1000 {
1001 int i;
1002 for(i=0;i<1024;i++)
1003 {
1004 if(p->rfd_top->status)
1005 break;
1006 DELAY_16();
1007 if(i == 1023)
1008 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
1009 }
1010 }
1011#endif
1012
1013#if 0
1014 if(!at_least_one)
1015 {
1016 int i;
1017 volatile struct rfd_struct *rfds=p->rfd_top;
1018 volatile struct rbd_struct *rbds;
1019 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
1020 for(i=0;i< (p->num_recv_buffs+4);i++)
1021 {
1022 rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
1023 printk("%04x:%04x ",rfds->status,rbds->status);
1024 rfds = (struct rfd_struct *) make32(rfds->next);
1025 }
1026 printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
1027 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);
1028 }
1029 old_at_least = at_least_one;
1030#endif
1031
1032 if(debuglevel > 0)
1033 printk("r");
1034}
1035
1036/**********************************************************
1037 * handle 'Receiver went not ready'.
1038 */
1039
1040static void ni52_rnr_int(struct net_device *dev)
1041{
1042 struct priv *p = (struct priv *) dev->priv;
1043
1044 p->stats.rx_errors++;
1045
1046 WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
1047 p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
1048 ni_attn586();
1049 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */
1050
1051 alloc_rfa(dev,(char *)p->rfd_first);
1052/* maybe add a check here, before restarting the RU */
1053 startrecv586(dev); /* restart RU */
1054
1055 printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
1056
1057}
1058
1059/**********************************************************
1060 * handle xmit - interrupt
1061 */
1062
1063static void ni52_xmt_int(struct net_device *dev)
1064{
1065 int status;
1066 struct priv *p = (struct priv *) dev->priv;
1067
1068 if(debuglevel > 0)
1069 printk("X");
1070
1071 status = p->xmit_cmds[p->xmit_last]->cmd_status;
1072 if(!(status & STAT_COMPL))
1073 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
1074
1075 if(status & STAT_OK)
1076 {
1077 p->stats.tx_packets++;
1078 p->stats.collisions += (status & TCMD_MAXCOLLMASK);
1079 }
1080 else
1081 {
1082 p->stats.tx_errors++;
1083 if(status & TCMD_LATECOLL) {
1084 printk("%s: late collision detected.\n",dev->name);
1085 p->stats.collisions++;
1086 }
1087 else if(status & TCMD_NOCARRIER) {
1088 p->stats.tx_carrier_errors++;
1089 printk("%s: no carrier detected.\n",dev->name);
1090 }
1091 else if(status & TCMD_LOSTCTS)
1092 printk("%s: loss of CTS detected.\n",dev->name);
1093 else if(status & TCMD_UNDERRUN) {
1094 p->stats.tx_fifo_errors++;
1095 printk("%s: DMA underrun detected.\n",dev->name);
1096 }
1097 else if(status & TCMD_MAXCOLL) {
1098 printk("%s: Max. collisions exceeded.\n",dev->name);
1099 p->stats.collisions += 16;
1100 }
1101 }
1102
1103#if (NUM_XMIT_BUFFS > 1)
1104 if( (++p->xmit_last) == NUM_XMIT_BUFFS)
1105 p->xmit_last = 0;
1106#endif
1107 netif_wake_queue(dev);
1108}
1109
1110/***********************************************************
1111 * (re)start the receiver
1112 */
1113
1114static void startrecv586(struct net_device *dev)
1115{
1116 struct priv *p = (struct priv *) dev->priv;
1117
1118 WAIT_4_SCB_CMD();
1119 WAIT_4_SCB_CMD_RUC();
1120 p->scb->rfa_offset = make16(p->rfd_first);
1121 p->scb->cmd_ruc = RUC_START;
1122 ni_attn586(); /* start cmd. */
1123 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */
1124}
1125
1126static void ni52_timeout(struct net_device *dev)
1127{
1128 struct priv *p = (struct priv *) dev->priv;
1129#ifndef NO_NOPCOMMANDS
1130 if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
1131 {
1132 netif_wake_queue(dev);
1133#ifdef DEBUG
1134 printk("%s: strange ... timeout with CU active?!?\n",dev->name);
1135 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);
1136#endif
1137 p->scb->cmd_cuc = CUC_ABORT;
1138 ni_attn586();
1139 WAIT_4_SCB_CMD();
1140 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
1141 p->scb->cmd_cuc = CUC_START;
1142 ni_attn586();
1143 WAIT_4_SCB_CMD();
1144 dev->trans_start = jiffies;
1145 return 0;
1146 }
1147#endif
1148 {
1149#ifdef DEBUG
1150 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
1151 printk("%s: command-stats: %04x %04x\n",dev->name,p->xmit_cmds[0]->cmd_status,p->xmit_cmds[1]->cmd_status);
1152 printk("%s: check, whether you set the right interrupt number!\n",dev->name);
1153#endif
1154 ni52_close(dev);
1155 ni52_open(dev);
1156 }
1157 dev->trans_start = jiffies;
1158}
1159
1160/******************************************************
1161 * send frame
1162 */
1163
1164static int ni52_send_packet(struct sk_buff *skb, struct net_device *dev)
1165{
1166 int len,i;
1167#ifndef NO_NOPCOMMANDS
1168 int next_nop;
1169#endif
1170 struct priv *p = (struct priv *) dev->priv;
1171
1172 if(skb->len > XMIT_BUFF_SIZE)
1173 {
1174 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1175 return 0;
1176 }
1177
1178 netif_stop_queue(dev);
1179
1180#if(NUM_XMIT_BUFFS > 1)
1181 if(test_and_set_bit(0,(void *) &p->lock)) {
1182 printk("%s: Queue was locked\n",dev->name);
1183 return 1;
1184 }
1185 else
1186#endif
1187 {
1188 memcpy((char *)p->xmit_cbuffs[p->xmit_count],(char *)(skb->data),skb->len);
1189 len = skb->len;
1190 if (len < ETH_ZLEN) {
1191 len = ETH_ZLEN;
1192 memset((char *)p->xmit_cbuffs[p->xmit_count]+skb->len, 0, len - skb->len);
1193 }
1194
1195#if (NUM_XMIT_BUFFS == 1)
1196# ifdef NO_NOPCOMMANDS
1197
1198#ifdef DEBUG
1199 if(p->scb->cus & CU_ACTIVE)
1200 {
1201 printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1202 printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,p->xmit_cmds[0]->cmd_status);
1203 }
1204#endif
1205
1206 p->xmit_buffs[0]->size = TBD_LAST | len;
1207 for(i=0;i<16;i++)
1208 {
1209 p->xmit_cmds[0]->cmd_status = 0;
1210 WAIT_4_SCB_CMD();
1211 if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1212 p->scb->cmd_cuc = CUC_RESUME;
1213 else
1214 {
1215 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1216 p->scb->cmd_cuc = CUC_START;
1217 }
1218
1219 ni_attn586();
1220 dev->trans_start = jiffies;
1221 if(!i)
1222 dev_kfree_skb(skb);
1223 WAIT_4_SCB_CMD();
1224 if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
1225 break;
1226 if(p->xmit_cmds[0]->cmd_status)
1227 break;
1228 if(i==15)
1229 printk("%s: Can't start transmit-command.\n",dev->name);
1230 }
1231# else
1232 next_nop = (p->nop_point + 1) & 0x1;
1233 p->xmit_buffs[0]->size = TBD_LAST | len;
1234
1235 p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link
1236 = make16((p->nop_cmds[next_nop]));
1237 p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1238
1239 p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1240 dev->trans_start = jiffies;
1241 p->nop_point = next_nop;
1242 dev_kfree_skb(skb);
1243# endif
1244#else
1245 p->xmit_buffs[p->xmit_count]->size = TBD_LAST | len;
1246 if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1247 next_nop = 0;
1248
1249 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1250 /* linkpointer of xmit-command already points to next nop cmd */
1251 p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1252 p->nop_cmds[next_nop]->cmd_status = 0;
1253
1254 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1255 dev->trans_start = jiffies;
1256 p->xmit_count = next_nop;
1257
1258 {
1259 unsigned long flags;
1260 save_flags(flags);
1261 cli();
1262 if(p->xmit_count != p->xmit_last)
1263 netif_wake_queue(dev);
1264 p->lock = 0;
1265 restore_flags(flags);
1266 }
1267 dev_kfree_skb(skb);
1268#endif
1269 }
1270 return 0;
1271}
1272
1273/*******************************************
1274 * Someone wanna have the statistics
1275 */
1276
1277static struct net_device_stats *ni52_get_stats(struct net_device *dev)
1278{
1279 struct priv *p = (struct priv *) dev->priv;
1280 unsigned short crc,aln,rsc,ovrn;
1281
1282 crc = p->scb->crc_errs; /* get error-statistic from the ni82586 */
1283 p->scb->crc_errs = 0;
1284 aln = p->scb->aln_errs;
1285 p->scb->aln_errs = 0;
1286 rsc = p->scb->rsc_errs;
1287 p->scb->rsc_errs = 0;
1288 ovrn = p->scb->ovrn_errs;
1289 p->scb->ovrn_errs = 0;
1290
1291 p->stats.rx_crc_errors += crc;
1292 p->stats.rx_fifo_errors += ovrn;
1293 p->stats.rx_frame_errors += aln;
1294 p->stats.rx_dropped += rsc;
1295
1296 return &p->stats;
1297}
1298
1299/********************************************************
1300 * Set MC list ..
1301 */
1302
1303static void set_multicast_list(struct net_device *dev)
1304{
1305 netif_stop_queue(dev);
1306 ni_disint();
1307 alloc586(dev);
1308 init586(dev);
1309 startrecv586(dev);
1310 ni_enaint();
1311 netif_wake_queue(dev);
1312}
1313
1314#ifdef MODULE
1315static struct net_device *dev_ni52;
1316
1317module_param(io, int, 0);
1318module_param(irq, int, 0);
1319module_param(memstart, long, 0);
1320module_param(memend, long, 0);
1321MODULE_PARM_DESC(io, "NI5210 I/O base address,required");
1322MODULE_PARM_DESC(irq, "NI5210 IRQ number,required");
1323MODULE_PARM_DESC(memstart, "NI5210 memory base address,required");
1324MODULE_PARM_DESC(memend, "NI5210 memory end address,required");
1325
1326int init_module(void)
1327{
1328 if(io <= 0x0 || !memend || !memstart || irq < 2) {
1329 printk("ni52: Autoprobing not allowed for modules.\nni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n");
1330 return -ENODEV;
1331 }
1332 dev_ni52 = ni52_probe(-1);
1333 if (IS_ERR(dev_ni52))
1334 return PTR_ERR(dev_ni52);
1335 return 0;
1336}
1337
1338void cleanup_module(void)
1339{
1340 unregister_netdev(dev_ni52);
1341 release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE);
1342 free_netdev(dev_ni52);
1343}
1344#endif /* MODULE */
1345
1346#if 0
1347/*
1348 * DUMP .. we expect a not running CMD unit and enough space
1349 */
1350void ni52_dump(struct net_device *dev,void *ptr)
1351{
1352 struct priv *p = (struct priv *) dev->priv;
1353 struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1354 int i;
1355
1356 p->scb->cmd_cuc = CUC_ABORT;
1357 ni_attn586();
1358 WAIT_4_SCB_CMD();
1359 WAIT_4_SCB_CMD_RUC();
1360
1361 dump_cmd->cmd_status = 0;
1362 dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1363 dump_cmd->dump_offset = make16((dump_cmd + 1));
1364 dump_cmd->cmd_link = 0xffff;
1365
1366 p->scb->cbl_offset = make16(dump_cmd);
1367 p->scb->cmd_cuc = CUC_START;
1368 ni_attn586();
1369 WAIT_4_STAT_COMPL(dump_cmd);
1370
1371 if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1372 printk("%s: Can't get dump information.\n",dev->name);
1373
1374 for(i=0;i<170;i++) {
1375 printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1376 if(i % 24 == 23)
1377 printk("\n");
1378 }
1379 printk("\n");
1380}
1381#endif
1382MODULE_LICENSE("GPL");
1383
1384/*
1385 * END: linux/drivers/net/ni52.c
1386 */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-08 13:22:14 -0500