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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
Alan Coxa197f692008-02-08 15:27:38 +000036 * (before getting an i82596 (yes 596 not 586) manual, the existing drivers
37 * helped me a lot to understand this tricky chip.)
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 *
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.
Alan Coxa197f692008-02-08 15:27:38 +000042 * This can slow down TCP connections. Maybe the newer ni5210 cards are
43 * better. My experience is, that if a machine sends with more than about
44 * 500-600K/s the fifo/sysbus overflows.
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 *
46 * IMPORTANT NOTE:
47 * On fast networks, it's a (very) good idea to have 16K shared memory. With
Alan Coxa197f692008-02-08 15:27:38 +000048 * 8K, we can store only 4 receive frames, so it can (easily) happen that a
49 * remote machine 'overruns' our system.
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 *
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)
Alan Coxa197f692008-02-08 15:27:38 +000063 * sending in NOP-mode: peak performance up to 530K/s (but better don't
64 * run this mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 */
66
67/*
68 * 29.Sept.96: virt_to_bus changes for new memory scheme
69 * 19.Feb.96: more Mcast changes, module support (MH)
70 *
71 * 18.Nov.95: Mcast changes (AC).
72 *
73 * 23.April.95: fixed(?) receiving problems by configuring a RFD more
74 * than the number of RBD's. Can maybe cause other problems.
75 * 18.April.95: Added MODULE support (MH)
76 * 17.April.95: MC related changes in init586() and set_multicast_list().
77 * removed use of 'jiffies' in init586() (MH)
78 *
79 * 19.Sep.94: Added Multicast support (not tested yet) (MH)
80 *
81 * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling.
82 * Now, every RFD has exact one RBD. (MH)
83 *
84 * 14.Sep.94: added promiscuous mode, a few cleanups (MH)
85 *
86 * 19.Aug.94: changed request_irq() parameter (MH)
87 *
88 * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH)
89 *
90 * 19.July.94: lotsa cleanups .. (MH)
91 *
92 * 17.July.94: some patches ... verified to run with 1.1.29 (MH)
93 *
94 * 4.July.94: patches for Linux 1.1.24 (MH)
95 *
96 * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH)
97 *
Alan Coxa197f692008-02-08 15:27:38 +000098 * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff,
99 * too (MH)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 *
101 * < 30.Sep.93: first versions
102 */
103
104static int debuglevel; /* debug-printk 0: off 1: a few 2: more */
105static int automatic_resume; /* experimental .. better should be zero */
106static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */
Alan Coxa197f692008-02-08 15:27:38 +0000107static int fifo = 0x8; /* don't change */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109#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
Alan Coxa197f692008-02-08 15:27:38 +0000132#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); }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136
Alan Coxa197f692008-02-08 15:27:38 +0000137#define make32(ptr16) (p->memtop + (short) (ptr16))
138#define make24(ptr32) ((unsigned long)(ptr32)) - p->base
139#define make16(ptr32) ((unsigned short) ((unsigned long)(ptr32)\
140 - (unsigned long) p->memtop))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
142/******************* how to calculate the buffers *****************************
143
144 * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
145 * --------------- in a different (more stable?) mode. Only in this mode it's
146 * possible to configure the driver with 'NO_NOPCOMMANDS'
147
148sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
149sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
150sizeof(rfd) = 24; sizeof(rbd) = 12;
151sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
152sizeof(nop_cmd) = 8;
153
154 * if you don't know the driver, better do not change these values: */
155
156#define RECV_BUFF_SIZE 1524 /* slightly oversized */
157#define XMIT_BUFF_SIZE 1524 /* slightly oversized */
158#define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
159#define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
160#define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
161#define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
162
163/**************************************************************************/
164
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
166#define NI52_TOTAL_SIZE 16
167#define NI52_ADDR0 0x02
168#define NI52_ADDR1 0x07
169#define NI52_ADDR2 0x01
170
Alan Coxa197f692008-02-08 15:27:38 +0000171static int ni52_probe1(struct net_device *dev, int ioaddr);
172static irqreturn_t ni52_interrupt(int irq, void *dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173static int ni52_open(struct net_device *dev);
174static int ni52_close(struct net_device *dev);
Alan Coxa197f692008-02-08 15:27:38 +0000175static int ni52_send_packet(struct sk_buff *, struct net_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176static struct net_device_stats *ni52_get_stats(struct net_device *dev);
177static void set_multicast_list(struct net_device *dev);
178static void ni52_timeout(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
180/* helper-functions */
181static int init586(struct net_device *dev);
Alan Coxa197f692008-02-08 15:27:38 +0000182static int check586(struct net_device *dev, char *where, unsigned size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183static void alloc586(struct net_device *dev);
184static void startrecv586(struct net_device *dev);
Alan Coxa197f692008-02-08 15:27:38 +0000185static void *alloc_rfa(struct net_device *dev, void *ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186static void ni52_rcv_int(struct net_device *dev);
187static void ni52_xmt_int(struct net_device *dev);
188static void ni52_rnr_int(struct net_device *dev);
189
Alan Coxa197f692008-02-08 15:27:38 +0000190struct priv {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 struct net_device_stats stats;
192 unsigned long base;
193 char *memtop;
Alan Coxa197f692008-02-08 15:27:38 +0000194 spinlock_t spinlock;
195 int reset;
196 struct rfd_struct *rfd_last, *rfd_top, *rfd_first;
197 struct scp_struct *scp;
198 struct iscp_struct *iscp;
199 struct scb_struct *scb;
200 struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201#if (NUM_XMIT_BUFFS == 1)
Alan Coxa197f692008-02-08 15:27:38 +0000202 struct transmit_cmd_struct *xmit_cmds[2];
203 struct nop_cmd_struct *nop_cmds[2];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204#else
Alan Coxa197f692008-02-08 15:27:38 +0000205 struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
206 struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207#endif
Alan Coxa197f692008-02-08 15:27:38 +0000208 int nop_point, num_recv_buffs;
209 char *xmit_cbuffs[NUM_XMIT_BUFFS];
210 int xmit_count, xmit_last;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211};
212
Alan Coxa197f692008-02-08 15:27:38 +0000213/* wait for command with timeout: */
214static void wait_for_scb_cmd(struct net_device *dev)
215{
216 struct priv *p = dev->priv;
217 int i;
218 for (i = 0; i < 16384; i++) {
219 if (readb(&p->scb->cmd_cuc) == 0)
220 break;
221 udelay(4);
222 if (i == 16383) {
223 printk(KERN_ERR "%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",
224 dev->name, readb(&p->scb->cmd_cuc), readb(&p->scb->cus));
225 if (!p->reset) {
226 p->reset = 1;
227 ni_reset586();
228 }
229 }
230 }
231}
232
233static void wait_for_scb_cmd_ruc(struct net_device *dev)
234{
235 struct priv *p = dev->priv;
236 int i;
237 for (i = 0; i < 16384; i++) {
238 if (readb(&p->scb->cmd_ruc) == 0)
239 break;
240 udelay(4);
241 if (i == 16383) {
242 printk(KERN_ERR "%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",
243 dev->name, p->scb->cmd_ruc, p->scb->rus);
244 if (!p->reset) {
245 p->reset = 1;
246 ni_reset586();
247 }
248 }
249 }
250}
251
252static void wait_for_stat_compl(void *p)
253{
254 struct nop_cmd_struct *addr = p;
255 int i;
256 for (i = 0; i < 32767; i++) {
257 if (readw(&((addr)->cmd_status)) & STAT_COMPL)
258 break;
259 udelay(32);
260 }
261}
262
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263/**********************************************
264 * close device
265 */
266static int ni52_close(struct net_device *dev)
267{
268 free_irq(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 ni_reset586(); /* the hard way to stop the receiver */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 netif_stop_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 return 0;
272}
273
274/**********************************************
275 * open device
276 */
277static int ni52_open(struct net_device *dev)
278{
279 int ret;
280
281 ni_disint();
282 alloc586(dev);
283 init586(dev);
284 startrecv586(dev);
285 ni_enaint();
286
Alan Coxa197f692008-02-08 15:27:38 +0000287 ret = request_irq(dev->irq, &ni52_interrupt, 0, dev->name, dev);
288 if (ret) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 ni_reset586();
290 return ret;
291 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 netif_start_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 return 0; /* most done by init */
294}
295
296/**********************************************
297 * Check to see if there's an 82586 out there.
298 */
Alan Coxa197f692008-02-08 15:27:38 +0000299static int check586(struct net_device *dev, char *where, unsigned size)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300{
301 struct priv pb;
302 struct priv *p = /* (struct priv *) dev->priv*/ &pb;
303 char *iscp_addrs[2];
304 int i;
305
Alan Coxa197f692008-02-08 15:27:38 +0000306 p->base = (unsigned long) isa_bus_to_virt((unsigned long)where)
307 + size - 0x01000000;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 p->memtop = isa_bus_to_virt((unsigned long)where) + size;
309 p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
Alan Coxa197f692008-02-08 15:27:38 +0000310 memset_io((char *)p->scp, 0, sizeof(struct scp_struct));
311 for (i = 0; i < sizeof(struct scp_struct); i++)
312 /* memory was writeable? */
313 if (readb((char *)p->scp + i))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 return 0;
Alan Coxa197f692008-02-08 15:27:38 +0000315 writeb(SYSBUSVAL, &p->scp->sysbus); /* 1 = 8Bit-Bus, 0 = 16 Bit */
316 if (readb(&p->scp->sysbus) != SYSBUSVAL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 return 0;
318
319 iscp_addrs[0] = isa_bus_to_virt((unsigned long)where);
Alan Coxa197f692008-02-08 15:27:38 +0000320 iscp_addrs[1] = (char *) p->scp - sizeof(struct iscp_struct);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321
Alan Coxa197f692008-02-08 15:27:38 +0000322 for (i = 0; i < 2; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 p->iscp = (struct iscp_struct *) iscp_addrs[i];
Alan Coxa197f692008-02-08 15:27:38 +0000324 memset_io((char *)p->iscp, 0, sizeof(struct iscp_struct));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
Alan Coxa197f692008-02-08 15:27:38 +0000326 writel(make24(p->iscp), &p->scp->iscp);
327 writeb(1, &p->iscp->busy);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328
329 ni_reset586();
330 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +0000331 mdelay(32); /* wait a while... */
332 /* i82586 clears 'busy' after successful init */
333 if (readb(&p->iscp->busy))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 return 0;
335 }
336 return 1;
337}
338
339/******************************************************************
340 * set iscp at the right place, called by ni52_probe1 and open586.
341 */
342static void alloc586(struct net_device *dev)
343{
344 struct priv *p = (struct priv *) dev->priv;
345
346 ni_reset586();
Alan Coxa197f692008-02-08 15:27:38 +0000347 mdelay(32);
348
349 spin_lock_init(&p->spinlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350
351 p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
352 p->scb = (struct scb_struct *) isa_bus_to_virt(dev->mem_start);
Alan Coxa197f692008-02-08 15:27:38 +0000353 p->iscp = (struct iscp_struct *)
354 ((char *)p->scp - sizeof(struct iscp_struct));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
Alan Coxa197f692008-02-08 15:27:38 +0000356 memset_io(p->iscp, 0, sizeof(struct iscp_struct));
357 memset_io(p->scp , 0, sizeof(struct scp_struct));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358
Alan Coxa197f692008-02-08 15:27:38 +0000359 writel(make24(p->iscp), &p->scp->iscp);
360 writeb(SYSBUSVAL, &p->scp->sysbus);
361 writew(make16(p->scb), &p->iscp->scb_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362
Alan Coxa197f692008-02-08 15:27:38 +0000363 writeb(1, &p->iscp->busy);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 ni_reset586();
365 ni_attn586();
366
Alan Coxa197f692008-02-08 15:27:38 +0000367 mdelay(32);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368
Alan Coxa197f692008-02-08 15:27:38 +0000369 if (readb(&p->iscp->busy))
370 printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
Alan Coxa197f692008-02-08 15:27:38 +0000372 p->reset = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373
Alan Coxa197f692008-02-08 15:27:38 +0000374 memset_io((char *)p->scb, 0, sizeof(struct scb_struct));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375}
376
377/* set: io,irq,memstart,memend or set it when calling insmod */
Alan Coxa197f692008-02-08 15:27:38 +0000378static int irq = 9;
379static int io = 0x300;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380static long memstart; /* e.g 0xd0000 */
381static long memend; /* e.g 0xd4000 */
382
383/**********************************************
384 * probe the ni5210-card
385 */
386struct net_device * __init ni52_probe(int unit)
387{
388 struct net_device *dev = alloc_etherdev(sizeof(struct priv));
389 static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0};
390 int *port;
391 int err = 0;
392
393 if (!dev)
394 return ERR_PTR(-ENOMEM);
395
396 if (unit >= 0) {
397 sprintf(dev->name, "eth%d", unit);
398 netdev_boot_setup_check(dev);
399 io = dev->base_addr;
400 irq = dev->irq;
401 memstart = dev->mem_start;
402 memend = dev->mem_end;
403 }
404
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 if (io > 0x1ff) { /* Check a single specified location. */
406 err = ni52_probe1(dev, io);
407 } else if (io > 0) { /* Don't probe at all. */
408 err = -ENXIO;
409 } else {
410 for (port = ports; *port && ni52_probe1(dev, *port) ; port++)
411 ;
412 if (*port)
413 goto got_it;
414#ifdef FULL_IO_PROBE
415 for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8)
416 ;
417 if (io < 0x400)
418 goto got_it;
419#endif
420 err = -ENODEV;
421 }
422 if (err)
423 goto out;
424got_it:
425 err = register_netdev(dev);
426 if (err)
427 goto out1;
428 return dev;
429out1:
430 release_region(dev->base_addr, NI52_TOTAL_SIZE);
431out:
432 free_netdev(dev);
433 return ERR_PTR(err);
434}
435
Alan Coxa197f692008-02-08 15:27:38 +0000436static int __init ni52_probe1(struct net_device *dev, int ioaddr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437{
438 int i, size, retval;
439
440 dev->base_addr = ioaddr;
441 dev->irq = irq;
442 dev->mem_start = memstart;
443 dev->mem_end = memend;
444
445 if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME))
446 return -EBUSY;
447
Alan Coxa197f692008-02-08 15:27:38 +0000448 if (!(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) {
450 retval = -ENODEV;
451 goto out;
452 }
453
Alan Coxa197f692008-02-08 15:27:38 +0000454 for (i = 0; i < ETH_ALEN; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 dev->dev_addr[i] = inb(dev->base_addr+i);
456
Alan Coxa197f692008-02-08 15:27:38 +0000457 if (dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 || dev->dev_addr[2] != NI52_ADDR2) {
459 retval = -ENODEV;
460 goto out;
461 }
462
Alan Coxa197f692008-02-08 15:27:38 +0000463 printk(KERN_INFO "%s: NI5210 found at %#3lx, ",
464 dev->name, dev->base_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465
466 /*
467 * check (or search) IO-Memory, 8K and 16K
468 */
469#ifdef MODULE
470 size = dev->mem_end - dev->mem_start;
Alan Coxa197f692008-02-08 15:27:38 +0000471 if (size != 0x2000 && size != 0x4000) {
472 printk("\n");
473 printk(KERN_ERR "%s: Invalid memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n", dev->name, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 retval = -ENODEV;
475 goto out;
476 }
Alan Coxa197f692008-02-08 15:27:38 +0000477 if (!check586(dev, (char *)dev->mem_start, size)) {
478 printk(KERN_ERR "?memcheck, Can't find memory at 0x%lx with size %d!\n", dev->mem_start, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 retval = -ENODEV;
480 goto out;
481 }
482#else
Alan Coxa197f692008-02-08 15:27:38 +0000483 if (dev->mem_start != 0) {
484 /* no auto-mem-probe */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 size = 0x4000; /* check for 16K mem */
Alan Coxa197f692008-02-08 15:27:38 +0000486 if (!check586(dev, (char *) dev->mem_start, size)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 size = 0x2000; /* check for 8K mem */
Alan Coxa197f692008-02-08 15:27:38 +0000488 if (!check586(dev, (char *)dev->mem_start, size)) {
489 printk(KERN_ERR "?memprobe, Can't find memory at 0x%lx!\n", dev->mem_start);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 retval = -ENODEV;
491 goto out;
492 }
493 }
Alan Coxa197f692008-02-08 15:27:38 +0000494 } else {
495 static const unsigned long memaddrs[] = {
496 0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000,
497 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0
498 };
499 for (i = 0;; i++) {
500 if (!memaddrs[i]) {
501 printk(KERN_ERR "?memprobe, Can't find io-memory!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 retval = -ENODEV;
503 goto out;
504 }
505 dev->mem_start = memaddrs[i];
506 size = 0x2000; /* check for 8K mem */
Alan Coxa197f692008-02-08 15:27:38 +0000507 if (check586(dev, (char *)dev->mem_start, size))
508 /* 8K-check */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 break;
510 size = 0x4000; /* check for 16K mem */
Alan Coxa197f692008-02-08 15:27:38 +0000511 if (check586(dev, (char *)dev->mem_start, size))
512 /* 16K-check */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 break;
514 }
515 }
Alan Coxa197f692008-02-08 15:27:38 +0000516 /* set mem_end showed by 'ifconfig' */
517 dev->mem_end = dev->mem_start + size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518#endif
519
Alan Coxa197f692008-02-08 15:27:38 +0000520 memset((char *)dev->priv, 0, sizeof(struct priv));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521
Alan Coxa197f692008-02-08 15:27:38 +0000522 ((struct priv *)(dev->priv))->memtop =
523 isa_bus_to_virt(dev->mem_start) + size;
524 ((struct priv *)(dev->priv))->base = (unsigned long)
525 isa_bus_to_virt(dev->mem_start) + size - 0x01000000;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 alloc586(dev);
527
528 /* set number of receive-buffs according to memsize */
Alan Coxa197f692008-02-08 15:27:38 +0000529 if (size == 0x2000)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8;
531 else
532 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16;
533
Alan Coxa197f692008-02-08 15:27:38 +0000534 printk(KERN_DEBUG "Memaddr: 0x%lx, Memsize: %d, ",
535 dev->mem_start, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536
Alan Coxa197f692008-02-08 15:27:38 +0000537 if (dev->irq < 2) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538 unsigned long irq_mask;
539
540 irq_mask = probe_irq_on();
541 ni_reset586();
542 ni_attn586();
543
544 mdelay(20);
545 dev->irq = probe_irq_off(irq_mask);
Alan Coxa197f692008-02-08 15:27:38 +0000546 if (!dev->irq) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 printk("?autoirq, Failed to detect IRQ line!\n");
548 retval = -EAGAIN;
549 goto out;
550 }
Alan Coxa197f692008-02-08 15:27:38 +0000551 printk("IRQ %d (autodetected).\n", dev->irq);
552 } else {
553 if (dev->irq == 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 dev->irq = 9;
Alan Coxa197f692008-02-08 15:27:38 +0000555 printk("IRQ %d (assigned and not checked!).\n", dev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 }
557
558 dev->open = ni52_open;
559 dev->stop = ni52_close;
560 dev->get_stats = ni52_get_stats;
561 dev->tx_timeout = ni52_timeout;
562 dev->watchdog_timeo = HZ/20;
563 dev->hard_start_xmit = ni52_send_packet;
564 dev->set_multicast_list = set_multicast_list;
565
566 dev->if_port = 0;
567
568 return 0;
569out:
570 release_region(ioaddr, NI52_TOTAL_SIZE);
571 return retval;
572}
573
574/**********************************************
575 * init the chip (ni52-interrupt should be disabled?!)
576 * needs a correct 'allocated' memory
577 */
578
579static int init586(struct net_device *dev)
580{
581 void *ptr;
Alan Coxa197f692008-02-08 15:27:38 +0000582 int i, result = 0;
583 struct priv *p = (struct priv *)dev->priv;
584 struct configure_cmd_struct *cfg_cmd;
585 struct iasetup_cmd_struct *ias_cmd;
586 struct tdr_cmd_struct *tdr_cmd;
587 struct mcsetup_cmd_struct *mc_cmd;
588 struct dev_mc_list *dmi = dev->mc_list;
589 int num_addrs = dev->mc_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590
591 ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
592
593 cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
Alan Coxa197f692008-02-08 15:27:38 +0000594 writew(0, &cfg_cmd->cmd_status);
595 writew(CMD_CONFIGURE | CMD_LAST, &cfg_cmd->cmd_cmd);
596 writew(0xFFFF, &cfg_cmd->cmd_link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597
Alan Coxa197f692008-02-08 15:27:38 +0000598 /* number of cfg bytes */
599 writeb(0x0a, &cfg_cmd->byte_cnt);
600 /* fifo-limit (8=tx:32/rx:64) */
601 writeb(fifo, &cfg_cmd->fifo);
602 /* hold or discard bad recv frames (bit 7) */
603 writeb(0x40, &cfg_cmd->sav_bf);
604 /* addr_len |!src_insert |pre-len |loopback */
605 writeb(0x2e, &cfg_cmd->adr_len);
606 writeb(0x00, &cfg_cmd->priority);
607 writeb(0x60, &cfg_cmd->ifs);;
608 writeb(0x00, &cfg_cmd->time_low);
609 writeb(0xf2, &cfg_cmd->time_high);
610 writeb(0x00, &cfg_cmd->promisc);;
611 if (dev->flags & IFF_ALLMULTI) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
Alan Coxa197f692008-02-08 15:27:38 +0000613 if (num_addrs > len) {
614 printk(KERN_ERR "%s: switching to promisc. mode\n",
615 dev->name);
616 dev->flags |= IFF_PROMISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 }
618 }
Alan Coxa197f692008-02-08 15:27:38 +0000619 if (dev->flags & IFF_PROMISC)
620 writeb(0x01, &cfg_cmd->promisc);
621 writeb(0x00, &cfg_cmd->carr_coll);
622 writew(make16(cfg_cmd), &p->scb->cbl_offset);
623 writew(0, &p->scb->cmd_ruc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624
Alan Coxa197f692008-02-08 15:27:38 +0000625 writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 ni_attn586();
627
Alan Coxa197f692008-02-08 15:27:38 +0000628 wait_for_stat_compl(cfg_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629
Alan Coxa197f692008-02-08 15:27:38 +0000630 if ((readw(&cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) !=
631 (STAT_COMPL|STAT_OK)) {
632 printk(KERN_ERR "%s: configure command failed: %x\n",
633 dev->name, readw(&cfg_cmd->cmd_status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 return 1;
635 }
636
637 /*
638 * individual address setup
639 */
640
641 ias_cmd = (struct iasetup_cmd_struct *)ptr;
642
Alan Coxa197f692008-02-08 15:27:38 +0000643 writew(0, &ias_cmd->cmd_status);
644 writew(CMD_IASETUP | CMD_LAST, &ias_cmd->cmd_cmd);
645 writew(0xffff, &ias_cmd->cmd_link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
Alan Coxa197f692008-02-08 15:27:38 +0000647 memcpy_toio((char *)&ias_cmd->iaddr, (char *)dev->dev_addr, ETH_ALEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648
Alan Coxa197f692008-02-08 15:27:38 +0000649 writew(make16(ias_cmd), &p->scb->cbl_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650
Alan Coxa197f692008-02-08 15:27:38 +0000651 writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 ni_attn586();
653
Alan Coxa197f692008-02-08 15:27:38 +0000654 wait_for_stat_compl(ias_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655
Alan Coxa197f692008-02-08 15:27:38 +0000656 if ((readw(&ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) !=
657 (STAT_OK|STAT_COMPL)) {
658 printk(KERN_ERR "%s (ni52): individual address setup command failed: %04x\n", dev->name, readw(&ias_cmd->cmd_status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 return 1;
660 }
661
662 /*
663 * TDR, wire check .. e.g. no resistor e.t.c
664 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400665
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 tdr_cmd = (struct tdr_cmd_struct *)ptr;
667
Alan Coxa197f692008-02-08 15:27:38 +0000668 writew(0, &tdr_cmd->cmd_status);
669 writew(CMD_TDR | CMD_LAST, &tdr_cmd->cmd_cmd);
670 writew(0xffff, &tdr_cmd->cmd_link);
671 writew(0, &tdr_cmd->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672
Alan Coxa197f692008-02-08 15:27:38 +0000673 writew(make16(tdr_cmd), &p->scb->cbl_offset);
674 writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 ni_attn586();
676
Alan Coxa197f692008-02-08 15:27:38 +0000677 wait_for_stat_compl(tdr_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678
Alan Coxa197f692008-02-08 15:27:38 +0000679 if (!(readw(&tdr_cmd->cmd_status) & STAT_COMPL))
680 printk(KERN_ERR "%s: Problems while running the TDR.\n",
681 dev->name);
682 else {
683 udelay(16);
684 result = readw(&tdr_cmd->status);
685 writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 ni_attn586(); /* ack the interrupts */
687
Alan Coxa197f692008-02-08 15:27:38 +0000688 if (result & TDR_LNK_OK)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689 ;
Alan Coxa197f692008-02-08 15:27:38 +0000690 else if (result & TDR_XCVR_PRB)
691 printk(KERN_ERR "%s: TDR: Transceiver problem. Check the cable(s)!\n",
692 dev->name);
693 else if (result & TDR_ET_OPN)
694 printk(KERN_ERR "%s: TDR: No correct termination %d clocks away.\n",
695 dev->name, result & TDR_TIMEMASK);
696 else if (result & TDR_ET_SRT) {
697 /* time == 0 -> strange :-) */
698 if (result & TDR_TIMEMASK)
699 printk(KERN_ERR "%s: TDR: Detected a short circuit %d clocks away.\n",
700 dev->name, result & TDR_TIMEMASK);
701 } else
702 printk(KERN_ERR "%s: TDR: Unknown status %04x\n",
703 dev->name, result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 }
705
706 /*
707 * Multicast setup
708 */
Alan Coxa197f692008-02-08 15:27:38 +0000709 if (num_addrs && !(dev->flags & IFF_PROMISC)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
Alan Coxa197f692008-02-08 15:27:38 +0000711 writew(0, &mc_cmd->cmd_status);
712 writew(CMD_MCSETUP | CMD_LAST, &mc_cmd->cmd_cmd);
713 writew(0xffff, &mc_cmd->cmd_link);
714 writew(num_addrs * 6, &mc_cmd->mc_cnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
Alan Coxa197f692008-02-08 15:27:38 +0000716 for (i = 0; i < num_addrs; i++, dmi = dmi->next)
717 memcpy_toio((char *) mc_cmd->mc_list[i],
718 dmi->dmi_addr, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719
Alan Coxa197f692008-02-08 15:27:38 +0000720 writew(make16(mc_cmd), &p->scb->cbl_offset);
721 writeb(CUC_START, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722 ni_attn586();
723
Alan Coxa197f692008-02-08 15:27:38 +0000724 wait_for_stat_compl(mc_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725
Alan Coxa197f692008-02-08 15:27:38 +0000726 if ((readw(&mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK))
727 != (STAT_COMPL|STAT_OK))
728 printk(KERN_ERR "%s: Can't apply multicast-address-list.\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 }
730
731 /*
732 * alloc nop/xmit-cmds
733 */
734#if (NUM_XMIT_BUFFS == 1)
Alan Coxa197f692008-02-08 15:27:38 +0000735 for (i = 0; i < 2; i++) {
736 p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
737 writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd);
738 writew(0, &p->nop_cmds[i]->cmd_status);
739 writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
741 }
742#else
Alan Coxa197f692008-02-08 15:27:38 +0000743 for (i = 0; i < NUM_XMIT_BUFFS; i++) {
744 p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
745 writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd);
746 writew(0, &p->nop_cmds[i]->cmd_status);
747 writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
749 }
750#endif
751
Alan Coxa197f692008-02-08 15:27:38 +0000752 ptr = alloc_rfa(dev, (void *)ptr); /* init receive-frame-area */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753
754 /*
755 * alloc xmit-buffs / init xmit_cmds
756 */
Alan Coxa197f692008-02-08 15:27:38 +0000757 for (i = 0; i < NUM_XMIT_BUFFS; i++) {
758 /* Transmit cmd/buff 0 */
759 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
761 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
762 ptr = (char *) ptr + XMIT_BUFF_SIZE;
763 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
764 ptr = (char *) ptr + sizeof(struct tbd_struct);
Alan Coxa197f692008-02-08 15:27:38 +0000765 if ((void *)ptr > (void *)p->iscp) {
766 printk(KERN_ERR "%s: not enough shared-mem for your configuration!\n",
767 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 return 1;
769 }
Alan Coxa197f692008-02-08 15:27:38 +0000770 memset_io((char *)(p->xmit_cmds[i]), 0,
771 sizeof(struct transmit_cmd_struct));
772 memset_io((char *)(p->xmit_buffs[i]), 0,
773 sizeof(struct tbd_struct));
774 writew(make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]),
775 &p->xmit_cmds[i]->cmd_link);
776 writew(STAT_COMPL, &p->xmit_cmds[i]->cmd_status);
777 writew(CMD_XMIT|CMD_INT, &p->xmit_cmds[i]->cmd_cmd);
778 writew(make16(p->xmit_buffs[i]), &p->xmit_cmds[i]->tbd_offset);
779 writew(0xffff, &p->xmit_buffs[i]->next);
780 writel(make24(p->xmit_cbuffs[i]), &p->xmit_buffs[i]->buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 }
782
783 p->xmit_count = 0;
784 p->xmit_last = 0;
785#ifndef NO_NOPCOMMANDS
786 p->nop_point = 0;
787#endif
788
789 /*
790 * 'start transmitter'
791 */
792#ifndef NO_NOPCOMMANDS
Alan Coxa197f692008-02-08 15:27:38 +0000793 writew(make16(p->nop_cmds[0]), &p->scb->cbl_offset);
794 writeb(CUC_START, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +0000796 wait_for_scb_cmd(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797#else
Alan Coxa197f692008-02-08 15:27:38 +0000798 writew(make16(p->xmit_cmds[0]), &p->xmit_cmds[0]->cmd_link);
799 writew(CMD_XMIT | CMD_SUSPEND | CMD_INT, &p->xmit_cmds[0]->cmd_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800#endif
801
802 /*
803 * ack. interrupts
804 */
Alan Coxa197f692008-02-08 15:27:38 +0000805 writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +0000807 udelay(16);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808
809 ni_enaint();
810
811 return 0;
812}
813
814/******************************************************
815 * This is a helper routine for ni52_rnr_int() and init586().
816 * It sets up the Receive Frame Area (RFA).
817 */
818
Alan Coxa197f692008-02-08 15:27:38 +0000819static void *alloc_rfa(struct net_device *dev, void *ptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820{
Alan Coxa197f692008-02-08 15:27:38 +0000821 struct rfd_struct *rfd = (struct rfd_struct *)ptr;
822 struct rbd_struct *rbd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823 int i;
824 struct priv *p = (struct priv *) dev->priv;
825
Alan Coxa197f692008-02-08 15:27:38 +0000826 memset_io((char *) rfd, 0,
827 sizeof(struct rfd_struct) * (p->num_recv_buffs + rfdadd));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828 p->rfd_first = rfd;
829
Alan Coxa197f692008-02-08 15:27:38 +0000830 for (i = 0; i < (p->num_recv_buffs + rfdadd); i++) {
831 writew(make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd)),
832 &rfd[i].next);
833 writew(0xffff, &rfd[i].rbd_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 }
Alan Coxa197f692008-02-08 15:27:38 +0000835 /* RU suspend */
836 writeb(RFD_SUSP, &rfd[p->num_recv_buffs-1+rfdadd].last);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837
Alan Coxa197f692008-02-08 15:27:38 +0000838 ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839
840 rbd = (struct rbd_struct *) ptr;
841 ptr = (void *) (rbd + p->num_recv_buffs);
842
843 /* clr descriptors */
Alan Coxa197f692008-02-08 15:27:38 +0000844 memset_io((char *)rbd, 0,
845 sizeof(struct rbd_struct) * (p->num_recv_buffs));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846
Alan Coxa197f692008-02-08 15:27:38 +0000847 for (i = 0; i < p->num_recv_buffs; i++) {
848 writew(make16(rbd + (i+1) % p->num_recv_buffs), &rbd[i].next);
849 writew(RECV_BUFF_SIZE, &rbd[i].size);
850 writel(make24(ptr), &rbd[i].buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851 ptr = (char *) ptr + RECV_BUFF_SIZE;
852 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 p->rfd_top = p->rfd_first;
854 p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
855
Alan Coxa197f692008-02-08 15:27:38 +0000856 writew(make16(p->rfd_first), &p->scb->rfa_offset);
857 writew(make16(rbd), &p->rfd_first->rbd_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858
859 return ptr;
860}
861
862
863/**************************************************
864 * Interrupt Handler ...
865 */
866
Alan Coxa197f692008-02-08 15:27:38 +0000867static irqreturn_t ni52_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868{
869 struct net_device *dev = dev_id;
Alan Coxa197f692008-02-08 15:27:38 +0000870 unsigned int stat;
871 int cnt = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872 struct priv *p;
873
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874 p = (struct priv *) dev->priv;
875
Alan Coxa197f692008-02-08 15:27:38 +0000876 if (debuglevel > 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877 printk("I");
878
Alan Coxa197f692008-02-08 15:27:38 +0000879 spin_lock(&p->spinlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880
Alan Coxa197f692008-02-08 15:27:38 +0000881 wait_for_scb_cmd(dev); /* wait for last command */
882
883 while ((stat = readb(&p->scb->cus) & STAT_MASK)) {
884 writeb(stat, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885 ni_attn586();
886
Alan Coxa197f692008-02-08 15:27:38 +0000887 if (stat & STAT_FR) /* received a frame */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888 ni52_rcv_int(dev);
889
Alan Coxa197f692008-02-08 15:27:38 +0000890 if (stat & STAT_RNR) { /* RU went 'not ready' */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891 printk("(R)");
Alan Coxa197f692008-02-08 15:27:38 +0000892 if (readb(&p->scb->rus) & RU_SUSPEND) {
893 /* special case: RU_SUSPEND */
894 wait_for_scb_cmd(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 p->scb->cmd_ruc = RUC_RESUME;
896 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +0000897 wait_for_scb_cmd_ruc(dev);
898 } else {
899 printk(KERN_ERR "%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",
900 dev->name, stat, readb(&p->scb->rus));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901 ni52_rnr_int(dev);
902 }
903 }
904
Alan Coxa197f692008-02-08 15:27:38 +0000905 /* Command with I-bit set complete */
906 if (stat & STAT_CX)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 ni52_xmt_int(dev);
908
909#ifndef NO_NOPCOMMANDS
Alan Coxa197f692008-02-08 15:27:38 +0000910 if (stat & STAT_CNA) { /* CU went 'not ready' */
911 if (netif_running(dev))
912 printk(KERN_ERR "%s: oops! CU has left active state. stat: %04x/%02x.\n",
913 dev->name, stat, readb(&p->scb->cus));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 }
915#endif
916
Alan Coxa197f692008-02-08 15:27:38 +0000917 if (debuglevel > 1)
918 printk("%d", cnt++);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919
Alan Coxa197f692008-02-08 15:27:38 +0000920 /* Wait for ack. (ni52_xmt_int can be faster than ack!!) */
921 wait_for_scb_cmd(dev);
922 if (p->scb->cmd_cuc) { /* timed out? */
923 printk(KERN_ERR "%s: Acknowledge timed out.\n",
924 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925 ni_disint();
926 break;
927 }
928 }
Alan Coxa197f692008-02-08 15:27:38 +0000929 spin_unlock(&p->spinlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930
Alan Coxa197f692008-02-08 15:27:38 +0000931 if (debuglevel > 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932 printk("i");
933 return IRQ_HANDLED;
934}
935
936/*******************************************************
937 * receive-interrupt
938 */
939
940static void ni52_rcv_int(struct net_device *dev)
941{
Alan Coxa197f692008-02-08 15:27:38 +0000942 int status, cnt = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 unsigned short totlen;
944 struct sk_buff *skb;
945 struct rbd_struct *rbd;
Alan Coxa197f692008-02-08 15:27:38 +0000946 struct priv *p = (struct priv *)dev->priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947
Alan Coxa197f692008-02-08 15:27:38 +0000948 if (debuglevel > 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949 printk("R");
950
Alan Coxa197f692008-02-08 15:27:38 +0000951 for (; (status = readb(&p->rfd_top->stat_high)) & RFD_COMPL;) {
952 rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
953 if (status & RFD_OK) { /* frame received without error? */
954 totlen = readw(&rbd->status);
955 if (totlen & RBD_LAST) {
956 /* the first and the last buffer? */
957 totlen &= RBD_MASK; /* length of this frame */
958 writew(0x00, &rbd->status);
959 skb = (struct sk_buff *)dev_alloc_skb(totlen+2);
960 if (skb != NULL) {
961 skb_reserve(skb, 2);
962 skb_put(skb, totlen);
963 skb_copy_to_linear_data(skb, (char *)p->base + (unsigned long) rbd->buffer, totlen);
964 skb->protocol = eth_type_trans(skb, dev);
965 netif_rx(skb);
966 dev->last_rx = jiffies;
967 p->stats.rx_packets++;
968 p->stats.rx_bytes += totlen;
969 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970 p->stats.rx_dropped++;
Alan Coxa197f692008-02-08 15:27:38 +0000971 } else {
972 int rstat;
973 /* free all RBD's until RBD_LAST is set */
974 totlen = 0;
975 while (!((rstat = readw(&rbd->status)) & RBD_LAST)) {
976 totlen += rstat & RBD_MASK;
977 if (!rstat) {
978 printk(KERN_ERR "%s: Whoops .. no end mark in RBD list\n", dev->name);
979 break;
980 }
981 writew(0, &rbd->status);
982 rbd = (struct rbd_struct *) make32(readl(&rbd->next));
983 }
984 totlen += rstat & RBD_MASK;
985 writew(0, &rbd->status);
986 printk(KERN_ERR "%s: received oversized frame! length: %d\n",
987 dev->name, totlen);
988 p->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989 }
Alan Coxa197f692008-02-08 15:27:38 +0000990 } else {/* frame !(ok), only with 'save-bad-frames' */
991 printk(KERN_ERR "%s: oops! rfd-error-status: %04x\n",
992 dev->name, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993 p->stats.rx_errors++;
994 }
Alan Coxa197f692008-02-08 15:27:38 +0000995 writeb(0, &p->rfd_top->stat_high);
996 writeb(RFD_SUSP, &p->rfd_top->last); /* maybe exchange by RFD_LAST */
997 writew(0xffff, &p->rfd_top->rbd_offset);
998 writeb(0, &p->rfd_last->last); /* delete RFD_SUSP */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 p->rfd_last = p->rfd_top;
1000 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
Alan Coxa197f692008-02-08 15:27:38 +00001001 writew(make16(p->rfd_top), &p->scb->rfa_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002
Alan Coxa197f692008-02-08 15:27:38 +00001003 if (debuglevel > 0)
1004 printk("%d", cnt++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005 }
1006
Alan Coxa197f692008-02-08 15:27:38 +00001007 if (automatic_resume) {
1008 wait_for_scb_cmd(dev);
1009 writeb(RUC_RESUME, &p->scb->cmd_ruc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +00001011 wait_for_scb_cmd_ruc(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012 }
1013
1014#ifdef WAIT_4_BUSY
1015 {
1016 int i;
Alan Coxa197f692008-02-08 15:27:38 +00001017 for (i = 0; i < 1024; i++) {
1018 if (p->rfd_top->status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019 break;
Alan Coxa197f692008-02-08 15:27:38 +00001020 udelay(16);
1021 if (i == 1023)
1022 printk(KERN_ERR "%s: RU hasn't fetched next RFD (not busy/complete)\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 }
1024 }
1025#endif
Alan Coxa197f692008-02-08 15:27:38 +00001026 if (debuglevel > 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 printk("r");
1028}
1029
1030/**********************************************************
1031 * handle 'Receiver went not ready'.
1032 */
1033
1034static void ni52_rnr_int(struct net_device *dev)
1035{
1036 struct priv *p = (struct priv *) dev->priv;
1037
1038 p->stats.rx_errors++;
1039
Alan Coxa197f692008-02-08 15:27:38 +00001040 wait_for_scb_cmd(dev); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
1041 writeb(RUC_ABORT, &p->scb->cmd_ruc); /* usually the RU is in the 'no resource'-state .. abort it now. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +00001043 wait_for_scb_cmd_ruc(dev); /* wait for accept cmd. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044
Alan Coxa197f692008-02-08 15:27:38 +00001045 alloc_rfa(dev, (char *)p->rfd_first);
1046 /* maybe add a check here, before restarting the RU */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047 startrecv586(dev); /* restart RU */
1048
Alan Coxa197f692008-02-08 15:27:38 +00001049 printk(KERN_ERR "%s: Receive-Unit restarted. Status: %04x\n", dev->name, p->scb->rus);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050
1051}
1052
1053/**********************************************************
1054 * handle xmit - interrupt
1055 */
1056
1057static void ni52_xmt_int(struct net_device *dev)
1058{
1059 int status;
1060 struct priv *p = (struct priv *) dev->priv;
1061
Alan Coxa197f692008-02-08 15:27:38 +00001062 if (debuglevel > 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 printk("X");
1064
Alan Coxa197f692008-02-08 15:27:38 +00001065 status = readw(&p->xmit_cmds[p->xmit_last]->cmd_status);
1066 if (!(status & STAT_COMPL))
1067 printk(KERN_ERR "%s: strange .. xmit-int without a 'COMPLETE'\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068
Alan Coxa197f692008-02-08 15:27:38 +00001069 if (status & STAT_OK) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070 p->stats.tx_packets++;
1071 p->stats.collisions += (status & TCMD_MAXCOLLMASK);
Alan Coxa197f692008-02-08 15:27:38 +00001072 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073 p->stats.tx_errors++;
Alan Coxa197f692008-02-08 15:27:38 +00001074 if (status & TCMD_LATECOLL) {
1075 printk(KERN_ERR "%s: late collision detected.\n",
1076 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077 p->stats.collisions++;
Alan Coxa197f692008-02-08 15:27:38 +00001078 } else if (status & TCMD_NOCARRIER) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079 p->stats.tx_carrier_errors++;
Alan Coxa197f692008-02-08 15:27:38 +00001080 printk(KERN_ERR "%s: no carrier detected.\n",
1081 dev->name);
1082 } else if (status & TCMD_LOSTCTS)
1083 printk(KERN_ERR "%s: loss of CTS detected.\n",
1084 dev->name);
1085 else if (status & TCMD_UNDERRUN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086 p->stats.tx_fifo_errors++;
Alan Coxa197f692008-02-08 15:27:38 +00001087 printk(KERN_ERR "%s: DMA underrun detected.\n",
1088 dev->name);
1089 } else if (status & TCMD_MAXCOLL) {
1090 printk(KERN_ERR "%s: Max. collisions exceeded.\n",
1091 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092 p->stats.collisions += 16;
1093 }
1094 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095#if (NUM_XMIT_BUFFS > 1)
Alan Coxa197f692008-02-08 15:27:38 +00001096 if ((++p->xmit_last) == NUM_XMIT_BUFFS)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097 p->xmit_last = 0;
1098#endif
1099 netif_wake_queue(dev);
1100}
1101
1102/***********************************************************
1103 * (re)start the receiver
1104 */
1105
1106static void startrecv586(struct net_device *dev)
1107{
1108 struct priv *p = (struct priv *) dev->priv;
1109
Alan Coxa197f692008-02-08 15:27:38 +00001110 wait_for_scb_cmd(dev);
1111 wait_for_scb_cmd_ruc(dev);
1112 writew(make16(p->rfd_first), &p->scb->rfa_offset);
1113 writeb(RUC_START, &p->scb->cmd_ruc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114 ni_attn586(); /* start cmd. */
Alan Coxa197f692008-02-08 15:27:38 +00001115 wait_for_scb_cmd_ruc(dev);
1116 /* wait for accept cmd. (no timeout!!) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001117}
1118
1119static void ni52_timeout(struct net_device *dev)
1120{
1121 struct priv *p = (struct priv *) dev->priv;
1122#ifndef NO_NOPCOMMANDS
Alan Coxa197f692008-02-08 15:27:38 +00001123 if (readb(&p->scb->cus) & CU_ACTIVE) { /* COMMAND-UNIT active? */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001124 netif_wake_queue(dev);
1125#ifdef DEBUG
Alan Coxa197f692008-02-08 15:27:38 +00001126 printk(KERN_ERR "%s: strange ... timeout with CU active?!?\n",
1127 dev->name);
1128 printk(KERN_ERR "%s: X0: %04x N0: %04x N1: %04x %d\n",
1129 dev->name, (int)p->xmit_cmds[0]->cmd_status,
1130 readw(&p->nop_cmds[0]->cmd_status),
1131 readw(&p->nop_cmds[1]->cmd_status),
1132 p->nop_point);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133#endif
Alan Coxa197f692008-02-08 15:27:38 +00001134 writeb(CUC_ABORT, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +00001136 wait_for_scb_cmd(dev);
1137 writew(make16(p->nop_cmds[p->nop_point]), &p->scb->cbl_offset);
1138 writeb(CUC_START, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +00001140 wait_for_scb_cmd(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141 dev->trans_start = jiffies;
1142 return 0;
1143 }
1144#endif
1145 {
1146#ifdef DEBUG
Alan Coxa197f692008-02-08 15:27:38 +00001147 printk(KERN_ERR "%s: xmitter timed out, try to restart! stat: %02x\n",
1148 dev->name, readb(&p->scb->cus));
1149 printk(KERN_ERR "%s: command-stats: %04x %04x\n",
1150 dev->name,
1151 readw(&p->xmit_cmds[0]->cmd_status),
1152 readw(&p->xmit_cmds[1]->cmd_status));
1153 printk(KERN_ERR "%s: check, whether you set the right interrupt number!\n",
1154 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155#endif
1156 ni52_close(dev);
1157 ni52_open(dev);
1158 }
1159 dev->trans_start = jiffies;
1160}
1161
1162/******************************************************
1163 * send frame
1164 */
1165
1166static int ni52_send_packet(struct sk_buff *skb, struct net_device *dev)
1167{
Alan Coxa197f692008-02-08 15:27:38 +00001168 int len, i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169#ifndef NO_NOPCOMMANDS
1170 int next_nop;
1171#endif
1172 struct priv *p = (struct priv *) dev->priv;
1173
Alan Coxa197f692008-02-08 15:27:38 +00001174 if (skb->len > XMIT_BUFF_SIZE) {
1175 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176 return 0;
1177 }
1178
1179 netif_stop_queue(dev);
1180
Alan Coxa197f692008-02-08 15:27:38 +00001181 skb_copy_from_linear_data(skb, (char *)p->xmit_cbuffs[p->xmit_count],
1182 skb->len);
1183 len = skb->len;
1184 if (len < ETH_ZLEN) {
1185 len = ETH_ZLEN;
1186 memset((char *)p->xmit_cbuffs[p->xmit_count]+skb->len, 0,
1187 len - skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001188 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001189
1190#if (NUM_XMIT_BUFFS == 1)
1191# ifdef NO_NOPCOMMANDS
1192
1193#ifdef DEBUG
Alan Coxa197f692008-02-08 15:27:38 +00001194 if (p->scb->cus & CU_ACTIVE) {
1195 printk(KERN_ERR "%s: Hmmm .. CU is still running and we wanna send a new packet.\n", dev->name);
1196 printk(KERN_ERR "%s: stat: %04x %04x\n",
1197 dev->name, readb(&p->scb->cus),
1198 readw(&p->xmit_cmds[0]->cmd_status));
1199 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200#endif
Alan Coxa197f692008-02-08 15:27:38 +00001201 writew(TBD_LAST | len, &p->xmit_buffs[0]->size);;
1202 for (i = 0; i < 16; i++) {
1203 writew(0, &p->xmit_cmds[0]->cmd_status);
1204 wait_for_scb_cmd(dev);
1205 if ((readb(&p->scb->cus) & CU_STATUS) == CU_SUSPEND)
1206 writeb(CUC_RESUME, &p->scb->cmd_cuc);
1207 else {
1208 writew(make16(p->xmit_cmds[0]), &p->scb->cbl_offset);
1209 writeb(CUC_START, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210 }
Alan Coxa197f692008-02-08 15:27:38 +00001211 ni_attn586();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001212 dev->trans_start = jiffies;
Alan Coxa197f692008-02-08 15:27:38 +00001213 if (!i)
1214 dev_kfree_skb(skb);
1215 wait_for_scb_cmd(dev);
1216 /* test it, because CU sometimes doesn't start immediately */
1217 if (readb(&p->scb->cus) & CU_ACTIVE)
1218 break;
1219 if (readw(&p->xmit_cmds[0]->cmd_status))
1220 break;
1221 if (i == 15)
1222 printk(KERN_WARNING "%s: Can't start transmit-command.\n", dev->name);
1223 }
1224# else
1225 next_nop = (p->nop_point + 1) & 0x1;
1226 writew(TBD_LAST | len, &p->xmit_buffs[0]->size);
1227 writew(make16(p->nop_cmds[next_nop]), &p->xmit_cmds[0]->cmd_link);
1228 writew(make16(p->nop_cmds[next_nop]),
1229 &p->nop_cmds[next_nop]->cmd_link);
1230 writew(0, &p->xmit_cmds[0]->cmd_status);
1231 writew(0, &p->nop_cmds[next_nop]->cmd_status);
1232
1233 writew(make16(p->xmit_cmds[0]), &p->nop_cmds[p->nop_point]->cmd_link);
1234 dev->trans_start = jiffies;
1235 p->nop_point = next_nop;
1236 dev_kfree_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237# endif
1238#else
Alan Coxa197f692008-02-08 15:27:38 +00001239 writew(TBD_LAST | len, &p->xmit_buffs[p->xmit_count]->size);
1240 next_nop = p->xmit_count + 1
1241 if (next_nop == NUM_XMIT_BUFFS)
1242 next_nop = 0;
1243 writew(0, &p->xmit_cmds[p->xmit_count]->cmd_status);
1244 /* linkpointer of xmit-command already points to next nop cmd */
1245 writew(make16(p->nop_cmds[next_nop]),
1246 &p->nop_cmds[next_nop]->cmd_link);
1247 writew(0, &p->nop_cmds[next_nop]->cmd_status);
1248 writew(make16(p->xmit_cmds[p->xmit_count]),
1249 &p->nop_cmds[p->xmit_count]->cmd_link);
1250 dev->trans_start = jiffies;
1251 p->xmit_count = next_nop;
1252 {
1253 unsigned long flags;
1254 spin_lock_irqsave(&p->spinlock);
1255 if (p->xmit_count != p->xmit_last)
1256 netif_wake_queue(dev);
1257 spin_unlock_irqrestore(&p->spinlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258 }
Alan Coxa197f692008-02-08 15:27:38 +00001259 dev_kfree_skb(skb);
1260#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261 return 0;
1262}
1263
1264/*******************************************
1265 * Someone wanna have the statistics
1266 */
1267
1268static struct net_device_stats *ni52_get_stats(struct net_device *dev)
1269{
1270 struct priv *p = (struct priv *) dev->priv;
Alan Coxa197f692008-02-08 15:27:38 +00001271 unsigned short crc, aln, rsc, ovrn;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272
Alan Coxa197f692008-02-08 15:27:38 +00001273 /* Get error-statistics from the ni82586 */
1274 crc = readw(&p->scb->crc_errs);
1275 writew(0, &p->scb->crc_errs);
1276 aln = readw(&p->scb->aln_errs);
1277 writew(0, &p->scb->aln_errs);
1278 rsc = readw(&p->scb->rsc_errs);
1279 writew(0, &p->scb->rsc_errs);
1280 ovrn = readw(&p->scb->ovrn_errs);
1281 writew(0, &p->scb->ovrn_errs);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282
1283 p->stats.rx_crc_errors += crc;
1284 p->stats.rx_fifo_errors += ovrn;
1285 p->stats.rx_frame_errors += aln;
1286 p->stats.rx_dropped += rsc;
1287
1288 return &p->stats;
1289}
1290
1291/********************************************************
1292 * Set MC list ..
1293 */
1294
1295static void set_multicast_list(struct net_device *dev)
1296{
1297 netif_stop_queue(dev);
1298 ni_disint();
1299 alloc586(dev);
1300 init586(dev);
1301 startrecv586(dev);
1302 ni_enaint();
1303 netif_wake_queue(dev);
1304}
1305
1306#ifdef MODULE
1307static struct net_device *dev_ni52;
1308
1309module_param(io, int, 0);
1310module_param(irq, int, 0);
1311module_param(memstart, long, 0);
1312module_param(memend, long, 0);
1313MODULE_PARM_DESC(io, "NI5210 I/O base address,required");
1314MODULE_PARM_DESC(irq, "NI5210 IRQ number,required");
1315MODULE_PARM_DESC(memstart, "NI5210 memory base address,required");
1316MODULE_PARM_DESC(memend, "NI5210 memory end address,required");
1317
Andrew Morton19a86642006-08-14 23:00:05 -07001318int __init init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319{
Alan Coxa197f692008-02-08 15:27:38 +00001320 if (io <= 0x0 || !memend || !memstart || irq < 2) {
1321 printk(KERN_ERR "ni52: Autoprobing not allowed for modules.\n");
1322 printk(KERN_ERR "ni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 return -ENODEV;
1324 }
1325 dev_ni52 = ni52_probe(-1);
1326 if (IS_ERR(dev_ni52))
1327 return PTR_ERR(dev_ni52);
1328 return 0;
1329}
1330
Al Viroafc8eb42006-06-14 18:50:53 -04001331void __exit cleanup_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332{
1333 unregister_netdev(dev_ni52);
1334 release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE);
1335 free_netdev(dev_ni52);
1336}
1337#endif /* MODULE */
1338
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339MODULE_LICENSE("GPL");
1340
1341/*
1342 * END: linux/drivers/net/ni52.c
1343 */