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Commit | Line | Data |
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1da177e4 LT |
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 | |
a197f693 AC |
36 | * (before getting an i82596 (yes 596 not 586) manual, the existing drivers |
37 | * helped me a lot to understand this tricky chip.) | |
1da177e4 LT |
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. | |
a197f693 AC |
42 | * 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. | |
1da177e4 LT |
45 | * |
46 | * IMPORTANT NOTE: | |
47 | * On fast networks, it's a (very) good idea to have 16K shared memory. With | |
a197f693 AC |
48 | * 8K, we can store only 4 receive frames, so it can (easily) happen that a |
49 | * remote machine 'overruns' our system. | |
1da177e4 LT |
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) | |
a197f693 AC |
63 | * sending in NOP-mode: peak performance up to 530K/s (but better don't |
64 | * run this mode) | |
1da177e4 LT |
65 | */ |
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 | * | |
a197f693 AC |
98 | * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff, |
99 | * too (MH) | |
1da177e4 LT |
100 | * |
101 | * < 30.Sep.93: first versions | |
102 | */ | |
103 | ||
104 | static int debuglevel; /* debug-printk 0: off 1: a few 2: more */ | |
105 | static int automatic_resume; /* experimental .. better should be zero */ | |
106 | static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */ | |
a197f693 | 107 | static int fifo = 0x8; /* don't change */ |
1da177e4 | 108 | |
1da177e4 LT |
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 | ||
a197f693 AC |
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); } | |
1da177e4 | 136 | |
a197f693 | 137 | #define make32(ptr16) (p->memtop + (short) (ptr16)) |
e06ee2bb AV |
138 | #define make24(ptr32) ((char __iomem *)(ptr32)) - p->base |
139 | #define make16(ptr32) ((unsigned short) ((char __iomem *)(ptr32)\ | |
140 | - p->memtop)) | |
1da177e4 LT |
141 | |
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 | ||
148 | sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8; | |
149 | sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT | |
150 | sizeof(rfd) = 24; sizeof(rbd) = 12; | |
151 | sizeof(tbd) = 8; sizeof(transmit_cmd) = 16; | |
152 | sizeof(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 | ||
1da177e4 LT |
165 | |
166 | #define NI52_TOTAL_SIZE 16 | |
167 | #define NI52_ADDR0 0x02 | |
168 | #define NI52_ADDR1 0x07 | |
169 | #define NI52_ADDR2 0x01 | |
170 | ||
a197f693 AC |
171 | static int ni52_probe1(struct net_device *dev, int ioaddr); |
172 | static irqreturn_t ni52_interrupt(int irq, void *dev_id); | |
1da177e4 LT |
173 | static int ni52_open(struct net_device *dev); |
174 | static int ni52_close(struct net_device *dev); | |
a197f693 | 175 | static int ni52_send_packet(struct sk_buff *, struct net_device *); |
1da177e4 LT |
176 | static struct net_device_stats *ni52_get_stats(struct net_device *dev); |
177 | static void set_multicast_list(struct net_device *dev); | |
178 | static void ni52_timeout(struct net_device *dev); | |
1da177e4 LT |
179 | |
180 | /* helper-functions */ | |
181 | static int init586(struct net_device *dev); | |
de597146 | 182 | static int check586(struct net_device *dev, unsigned size); |
1da177e4 LT |
183 | static void alloc586(struct net_device *dev); |
184 | static void startrecv586(struct net_device *dev); | |
2d76c267 | 185 | static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr); |
1da177e4 LT |
186 | static void ni52_rcv_int(struct net_device *dev); |
187 | static void ni52_xmt_int(struct net_device *dev); | |
188 | static void ni52_rnr_int(struct net_device *dev); | |
189 | ||
a197f693 | 190 | struct priv { |
1da177e4 | 191 | struct net_device_stats stats; |
e06ee2bb AV |
192 | char __iomem *base; |
193 | char __iomem *mapped; | |
2d76c267 | 194 | char __iomem *memtop; |
a197f693 AC |
195 | spinlock_t spinlock; |
196 | int reset; | |
2d76c267 AV |
197 | struct rfd_struct __iomem *rfd_last, *rfd_top, *rfd_first; |
198 | struct scp_struct __iomem *scp; | |
199 | struct iscp_struct __iomem *iscp; | |
200 | struct scb_struct __iomem *scb; | |
201 | struct tbd_struct __iomem *xmit_buffs[NUM_XMIT_BUFFS]; | |
1da177e4 | 202 | #if (NUM_XMIT_BUFFS == 1) |
2d76c267 AV |
203 | struct transmit_cmd_struct __iomem *xmit_cmds[2]; |
204 | struct nop_cmd_struct __iomem *nop_cmds[2]; | |
1da177e4 | 205 | #else |
2d76c267 AV |
206 | struct transmit_cmd_struct __iomem *xmit_cmds[NUM_XMIT_BUFFS]; |
207 | struct nop_cmd_struct __iomem *nop_cmds[NUM_XMIT_BUFFS]; | |
1da177e4 | 208 | #endif |
a197f693 | 209 | int nop_point, num_recv_buffs; |
2d76c267 | 210 | char __iomem *xmit_cbuffs[NUM_XMIT_BUFFS]; |
a197f693 | 211 | int xmit_count, xmit_last; |
1da177e4 LT |
212 | }; |
213 | ||
a197f693 AC |
214 | /* wait for command with timeout: */ |
215 | static void wait_for_scb_cmd(struct net_device *dev) | |
216 | { | |
217 | struct priv *p = dev->priv; | |
218 | int i; | |
219 | for (i = 0; i < 16384; i++) { | |
220 | if (readb(&p->scb->cmd_cuc) == 0) | |
221 | break; | |
222 | udelay(4); | |
223 | if (i == 16383) { | |
224 | printk(KERN_ERR "%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n", | |
225 | dev->name, readb(&p->scb->cmd_cuc), readb(&p->scb->cus)); | |
226 | if (!p->reset) { | |
227 | p->reset = 1; | |
228 | ni_reset586(); | |
229 | } | |
230 | } | |
231 | } | |
232 | } | |
233 | ||
234 | static void wait_for_scb_cmd_ruc(struct net_device *dev) | |
235 | { | |
236 | struct priv *p = dev->priv; | |
237 | int i; | |
238 | for (i = 0; i < 16384; i++) { | |
239 | if (readb(&p->scb->cmd_ruc) == 0) | |
240 | break; | |
241 | udelay(4); | |
242 | if (i == 16383) { | |
243 | printk(KERN_ERR "%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n", | |
244 | dev->name, p->scb->cmd_ruc, p->scb->rus); | |
245 | if (!p->reset) { | |
246 | p->reset = 1; | |
247 | ni_reset586(); | |
248 | } | |
249 | } | |
250 | } | |
251 | } | |
252 | ||
2d76c267 | 253 | static void wait_for_stat_compl(void __iomem *p) |
a197f693 | 254 | { |
2d76c267 | 255 | struct nop_cmd_struct __iomem *addr = p; |
a197f693 AC |
256 | int i; |
257 | for (i = 0; i < 32767; i++) { | |
258 | if (readw(&((addr)->cmd_status)) & STAT_COMPL) | |
259 | break; | |
260 | udelay(32); | |
261 | } | |
262 | } | |
263 | ||
1da177e4 LT |
264 | /********************************************** |
265 | * close device | |
266 | */ | |
267 | static int ni52_close(struct net_device *dev) | |
268 | { | |
269 | free_irq(dev->irq, dev); | |
1da177e4 | 270 | ni_reset586(); /* the hard way to stop the receiver */ |
1da177e4 | 271 | netif_stop_queue(dev); |
1da177e4 LT |
272 | return 0; |
273 | } | |
274 | ||
275 | /********************************************** | |
276 | * open device | |
277 | */ | |
278 | static int ni52_open(struct net_device *dev) | |
279 | { | |
280 | int ret; | |
281 | ||
282 | ni_disint(); | |
283 | alloc586(dev); | |
284 | init586(dev); | |
285 | startrecv586(dev); | |
286 | ni_enaint(); | |
287 | ||
a197f693 AC |
288 | ret = request_irq(dev->irq, &ni52_interrupt, 0, dev->name, dev); |
289 | if (ret) { | |
1da177e4 LT |
290 | ni_reset586(); |
291 | return ret; | |
292 | } | |
1da177e4 | 293 | netif_start_queue(dev); |
1da177e4 LT |
294 | return 0; /* most done by init */ |
295 | } | |
296 | ||
76af5699 AV |
297 | static int check_iscp(struct net_device *dev, void __iomem *addr) |
298 | { | |
299 | struct iscp_struct __iomem *iscp = addr; | |
300 | struct priv *p = dev->priv; | |
301 | memset_io(iscp, 0, sizeof(struct iscp_struct)); | |
302 | ||
303 | writel(make24(iscp), &p->scp->iscp); | |
304 | writeb(1, &iscp->busy); | |
305 | ||
306 | ni_reset586(); | |
307 | ni_attn586(); | |
308 | mdelay(32); /* wait a while... */ | |
309 | /* i82586 clears 'busy' after successful init */ | |
310 | if (readb(&iscp->busy)) | |
311 | return 0; | |
312 | return 1; | |
313 | } | |
314 | ||
1da177e4 LT |
315 | /********************************************** |
316 | * Check to see if there's an 82586 out there. | |
317 | */ | |
de597146 | 318 | static int check586(struct net_device *dev, unsigned size) |
1da177e4 | 319 | { |
7f8cfd56 | 320 | struct priv *p = dev->priv; |
1da177e4 LT |
321 | int i; |
322 | ||
76af5699 | 323 | p->mapped = (char __iomem *)isa_bus_to_virt(dev->mem_start); |
e06ee2bb AV |
324 | p->base = p->mapped + size - 0x01000000; |
325 | p->memtop = p->mapped + size; | |
2d76c267 | 326 | p->scp = (struct scp_struct __iomem *)(p->base + SCP_DEFAULT_ADDRESS); |
7f8cfd56 | 327 | p->scb = (struct scb_struct __iomem *) p->mapped; |
76af5699 | 328 | p->iscp = (struct iscp_struct __iomem *)p->scp - 1; |
2d76c267 | 329 | memset_io(p->scp, 0, sizeof(struct scp_struct)); |
a197f693 AC |
330 | for (i = 0; i < sizeof(struct scp_struct); i++) |
331 | /* memory was writeable? */ | |
2d76c267 | 332 | if (readb((char __iomem *)p->scp + i)) |
1da177e4 | 333 | return 0; |
a197f693 AC |
334 | writeb(SYSBUSVAL, &p->scp->sysbus); /* 1 = 8Bit-Bus, 0 = 16 Bit */ |
335 | if (readb(&p->scp->sysbus) != SYSBUSVAL) | |
1da177e4 LT |
336 | return 0; |
337 | ||
76af5699 AV |
338 | if (!check_iscp(dev, p->mapped)) |
339 | return 0; | |
340 | if (!check_iscp(dev, p->iscp)) | |
341 | return 0; | |
1da177e4 LT |
342 | return 1; |
343 | } | |
344 | ||
345 | /****************************************************************** | |
346 | * set iscp at the right place, called by ni52_probe1 and open586. | |
347 | */ | |
348 | static void alloc586(struct net_device *dev) | |
349 | { | |
350 | struct priv *p = (struct priv *) dev->priv; | |
351 | ||
352 | ni_reset586(); | |
a197f693 AC |
353 | mdelay(32); |
354 | ||
a197f693 AC |
355 | memset_io(p->iscp, 0, sizeof(struct iscp_struct)); |
356 | memset_io(p->scp , 0, sizeof(struct scp_struct)); | |
1da177e4 | 357 | |
a197f693 AC |
358 | writel(make24(p->iscp), &p->scp->iscp); |
359 | writeb(SYSBUSVAL, &p->scp->sysbus); | |
360 | writew(make16(p->scb), &p->iscp->scb_offset); | |
1da177e4 | 361 | |
a197f693 | 362 | writeb(1, &p->iscp->busy); |
1da177e4 LT |
363 | ni_reset586(); |
364 | ni_attn586(); | |
365 | ||
a197f693 | 366 | mdelay(32); |
1da177e4 | 367 | |
a197f693 AC |
368 | if (readb(&p->iscp->busy)) |
369 | printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name); | |
1da177e4 | 370 | |
a197f693 | 371 | p->reset = 0; |
1da177e4 | 372 | |
2d76c267 | 373 | memset_io(p->scb, 0, sizeof(struct scb_struct)); |
1da177e4 LT |
374 | } |
375 | ||
376 | /* set: io,irq,memstart,memend or set it when calling insmod */ | |
a197f693 AC |
377 | static int irq = 9; |
378 | static int io = 0x300; | |
1da177e4 LT |
379 | static long memstart; /* e.g 0xd0000 */ |
380 | static long memend; /* e.g 0xd4000 */ | |
381 | ||
382 | /********************************************** | |
383 | * probe the ni5210-card | |
384 | */ | |
385 | struct net_device * __init ni52_probe(int unit) | |
386 | { | |
387 | struct net_device *dev = alloc_etherdev(sizeof(struct priv)); | |
388 | static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0}; | |
389 | int *port; | |
390 | int err = 0; | |
391 | ||
392 | if (!dev) | |
393 | return ERR_PTR(-ENOMEM); | |
394 | ||
395 | if (unit >= 0) { | |
396 | sprintf(dev->name, "eth%d", unit); | |
397 | netdev_boot_setup_check(dev); | |
398 | io = dev->base_addr; | |
399 | irq = dev->irq; | |
400 | memstart = dev->mem_start; | |
401 | memend = dev->mem_end; | |
402 | } | |
403 | ||
1da177e4 LT |
404 | if (io > 0x1ff) { /* Check a single specified location. */ |
405 | err = ni52_probe1(dev, io); | |
406 | } else if (io > 0) { /* Don't probe at all. */ | |
407 | err = -ENXIO; | |
408 | } else { | |
409 | for (port = ports; *port && ni52_probe1(dev, *port) ; port++) | |
410 | ; | |
411 | if (*port) | |
412 | goto got_it; | |
413 | #ifdef FULL_IO_PROBE | |
414 | for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8) | |
415 | ; | |
416 | if (io < 0x400) | |
417 | goto got_it; | |
418 | #endif | |
419 | err = -ENODEV; | |
420 | } | |
421 | if (err) | |
422 | goto out; | |
423 | got_it: | |
424 | err = register_netdev(dev); | |
425 | if (err) | |
426 | goto out1; | |
427 | return dev; | |
428 | out1: | |
429 | release_region(dev->base_addr, NI52_TOTAL_SIZE); | |
430 | out: | |
431 | free_netdev(dev); | |
432 | return ERR_PTR(err); | |
433 | } | |
434 | ||
a197f693 | 435 | static int __init ni52_probe1(struct net_device *dev, int ioaddr) |
1da177e4 LT |
436 | { |
437 | int i, size, retval; | |
e06ee2bb | 438 | struct priv *priv = dev->priv; |
1da177e4 LT |
439 | |
440 | dev->base_addr = ioaddr; | |
441 | dev->irq = irq; | |
442 | dev->mem_start = memstart; | |
443 | dev->mem_end = memend; | |
444 | ||
7f8cfd56 AV |
445 | spin_lock_init(&priv->spinlock); |
446 | ||
1da177e4 LT |
447 | if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME)) |
448 | return -EBUSY; | |
449 | ||
a197f693 | 450 | if (!(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) || |
1da177e4 LT |
451 | !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) { |
452 | retval = -ENODEV; | |
453 | goto out; | |
454 | } | |
455 | ||
a197f693 | 456 | for (i = 0; i < ETH_ALEN; i++) |
1da177e4 LT |
457 | dev->dev_addr[i] = inb(dev->base_addr+i); |
458 | ||
a197f693 | 459 | if (dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1 |
1da177e4 LT |
460 | || dev->dev_addr[2] != NI52_ADDR2) { |
461 | retval = -ENODEV; | |
462 | goto out; | |
463 | } | |
464 | ||
a197f693 AC |
465 | printk(KERN_INFO "%s: NI5210 found at %#3lx, ", |
466 | dev->name, dev->base_addr); | |
1da177e4 LT |
467 | |
468 | /* | |
469 | * check (or search) IO-Memory, 8K and 16K | |
470 | */ | |
471 | #ifdef MODULE | |
472 | size = dev->mem_end - dev->mem_start; | |
a197f693 AC |
473 | if (size != 0x2000 && size != 0x4000) { |
474 | printk("\n"); | |
475 | printk(KERN_ERR "%s: Invalid memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n", dev->name, size); | |
1da177e4 LT |
476 | retval = -ENODEV; |
477 | goto out; | |
478 | } | |
de597146 | 479 | if (!check586(dev, size)) { |
a197f693 | 480 | printk(KERN_ERR "?memcheck, Can't find memory at 0x%lx with size %d!\n", dev->mem_start, size); |
1da177e4 LT |
481 | retval = -ENODEV; |
482 | goto out; | |
483 | } | |
484 | #else | |
a197f693 AC |
485 | if (dev->mem_start != 0) { |
486 | /* no auto-mem-probe */ | |
1da177e4 | 487 | size = 0x4000; /* check for 16K mem */ |
de597146 | 488 | if (!check586(dev, size)) { |
1da177e4 | 489 | size = 0x2000; /* check for 8K mem */ |
de597146 | 490 | if (!check586(dev, size)) { |
a197f693 | 491 | printk(KERN_ERR "?memprobe, Can't find memory at 0x%lx!\n", dev->mem_start); |
1da177e4 LT |
492 | retval = -ENODEV; |
493 | goto out; | |
494 | } | |
495 | } | |
a197f693 AC |
496 | } else { |
497 | static const unsigned long memaddrs[] = { | |
498 | 0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000, | |
499 | 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0 | |
500 | }; | |
501 | for (i = 0;; i++) { | |
502 | if (!memaddrs[i]) { | |
503 | printk(KERN_ERR "?memprobe, Can't find io-memory!\n"); | |
1da177e4 LT |
504 | retval = -ENODEV; |
505 | goto out; | |
506 | } | |
507 | dev->mem_start = memaddrs[i]; | |
508 | size = 0x2000; /* check for 8K mem */ | |
de597146 | 509 | if (check586(dev, size)) |
a197f693 | 510 | /* 8K-check */ |
1da177e4 LT |
511 | break; |
512 | size = 0x4000; /* check for 16K mem */ | |
de597146 | 513 | if (check586(dev, size)) |
a197f693 | 514 | /* 16K-check */ |
1da177e4 LT |
515 | break; |
516 | } | |
517 | } | |
a197f693 AC |
518 | /* set mem_end showed by 'ifconfig' */ |
519 | dev->mem_end = dev->mem_start + size; | |
1da177e4 LT |
520 | #endif |
521 | ||
1da177e4 LT |
522 | alloc586(dev); |
523 | ||
524 | /* set number of receive-buffs according to memsize */ | |
a197f693 | 525 | if (size == 0x2000) |
e06ee2bb | 526 | priv->num_recv_buffs = NUM_RECV_BUFFS_8; |
1da177e4 | 527 | else |
e06ee2bb | 528 | priv->num_recv_buffs = NUM_RECV_BUFFS_16; |
1da177e4 | 529 | |
a197f693 AC |
530 | printk(KERN_DEBUG "Memaddr: 0x%lx, Memsize: %d, ", |
531 | dev->mem_start, size); | |
1da177e4 | 532 | |
a197f693 | 533 | if (dev->irq < 2) { |
1da177e4 LT |
534 | unsigned long irq_mask; |
535 | ||
536 | irq_mask = probe_irq_on(); | |
537 | ni_reset586(); | |
538 | ni_attn586(); | |
539 | ||
540 | mdelay(20); | |
541 | dev->irq = probe_irq_off(irq_mask); | |
a197f693 | 542 | if (!dev->irq) { |
1da177e4 LT |
543 | printk("?autoirq, Failed to detect IRQ line!\n"); |
544 | retval = -EAGAIN; | |
545 | goto out; | |
546 | } | |
a197f693 AC |
547 | printk("IRQ %d (autodetected).\n", dev->irq); |
548 | } else { | |
549 | if (dev->irq == 2) | |
1da177e4 | 550 | dev->irq = 9; |
a197f693 | 551 | printk("IRQ %d (assigned and not checked!).\n", dev->irq); |
1da177e4 LT |
552 | } |
553 | ||
554 | dev->open = ni52_open; | |
555 | dev->stop = ni52_close; | |
556 | dev->get_stats = ni52_get_stats; | |
557 | dev->tx_timeout = ni52_timeout; | |
558 | dev->watchdog_timeo = HZ/20; | |
559 | dev->hard_start_xmit = ni52_send_packet; | |
560 | dev->set_multicast_list = set_multicast_list; | |
561 | ||
562 | dev->if_port = 0; | |
563 | ||
564 | return 0; | |
565 | out: | |
566 | release_region(ioaddr, NI52_TOTAL_SIZE); | |
567 | return retval; | |
568 | } | |
569 | ||
570 | /********************************************** | |
571 | * init the chip (ni52-interrupt should be disabled?!) | |
572 | * needs a correct 'allocated' memory | |
573 | */ | |
574 | ||
575 | static int init586(struct net_device *dev) | |
576 | { | |
2d76c267 | 577 | void __iomem *ptr; |
a197f693 AC |
578 | int i, result = 0; |
579 | struct priv *p = (struct priv *)dev->priv; | |
2d76c267 AV |
580 | struct configure_cmd_struct __iomem *cfg_cmd; |
581 | struct iasetup_cmd_struct __iomem *ias_cmd; | |
582 | struct tdr_cmd_struct __iomem *tdr_cmd; | |
583 | struct mcsetup_cmd_struct __iomem *mc_cmd; | |
a197f693 AC |
584 | struct dev_mc_list *dmi = dev->mc_list; |
585 | int num_addrs = dev->mc_count; | |
1da177e4 | 586 | |
2d76c267 | 587 | ptr = p->scb + 1; |
1da177e4 | 588 | |
2d76c267 | 589 | cfg_cmd = ptr; /* configure-command */ |
a197f693 AC |
590 | writew(0, &cfg_cmd->cmd_status); |
591 | writew(CMD_CONFIGURE | CMD_LAST, &cfg_cmd->cmd_cmd); | |
592 | writew(0xFFFF, &cfg_cmd->cmd_link); | |
593 | ||
594 | /* number of cfg bytes */ | |
595 | writeb(0x0a, &cfg_cmd->byte_cnt); | |
596 | /* fifo-limit (8=tx:32/rx:64) */ | |
597 | writeb(fifo, &cfg_cmd->fifo); | |
598 | /* hold or discard bad recv frames (bit 7) */ | |
599 | writeb(0x40, &cfg_cmd->sav_bf); | |
600 | /* addr_len |!src_insert |pre-len |loopback */ | |
601 | writeb(0x2e, &cfg_cmd->adr_len); | |
602 | writeb(0x00, &cfg_cmd->priority); | |
603 | writeb(0x60, &cfg_cmd->ifs);; | |
604 | writeb(0x00, &cfg_cmd->time_low); | |
605 | writeb(0xf2, &cfg_cmd->time_high); | |
606 | writeb(0x00, &cfg_cmd->promisc);; | |
607 | if (dev->flags & IFF_ALLMULTI) { | |
2d76c267 | 608 | int len = ((char __iomem *)p->iscp - (char __iomem *)ptr - 8) / 6; |
a197f693 AC |
609 | if (num_addrs > len) { |
610 | printk(KERN_ERR "%s: switching to promisc. mode\n", | |
611 | dev->name); | |
612 | dev->flags |= IFF_PROMISC; | |
1da177e4 LT |
613 | } |
614 | } | |
a197f693 AC |
615 | if (dev->flags & IFF_PROMISC) |
616 | writeb(0x01, &cfg_cmd->promisc); | |
617 | writeb(0x00, &cfg_cmd->carr_coll); | |
618 | writew(make16(cfg_cmd), &p->scb->cbl_offset); | |
619 | writew(0, &p->scb->cmd_ruc); | |
1da177e4 | 620 | |
a197f693 | 621 | writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ |
1da177e4 LT |
622 | ni_attn586(); |
623 | ||
a197f693 | 624 | wait_for_stat_compl(cfg_cmd); |
1da177e4 | 625 | |
a197f693 AC |
626 | if ((readw(&cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != |
627 | (STAT_COMPL|STAT_OK)) { | |
628 | printk(KERN_ERR "%s: configure command failed: %x\n", | |
629 | dev->name, readw(&cfg_cmd->cmd_status)); | |
1da177e4 LT |
630 | return 1; |
631 | } | |
632 | ||
633 | /* | |
634 | * individual address setup | |
635 | */ | |
636 | ||
2d76c267 | 637 | ias_cmd = ptr; |
1da177e4 | 638 | |
a197f693 AC |
639 | writew(0, &ias_cmd->cmd_status); |
640 | writew(CMD_IASETUP | CMD_LAST, &ias_cmd->cmd_cmd); | |
641 | writew(0xffff, &ias_cmd->cmd_link); | |
1da177e4 | 642 | |
2d76c267 | 643 | memcpy_toio(&ias_cmd->iaddr, (char *)dev->dev_addr, ETH_ALEN); |
1da177e4 | 644 | |
a197f693 | 645 | writew(make16(ias_cmd), &p->scb->cbl_offset); |
1da177e4 | 646 | |
a197f693 | 647 | writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ |
1da177e4 LT |
648 | ni_attn586(); |
649 | ||
a197f693 | 650 | wait_for_stat_compl(ias_cmd); |
1da177e4 | 651 | |
a197f693 AC |
652 | if ((readw(&ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != |
653 | (STAT_OK|STAT_COMPL)) { | |
654 | printk(KERN_ERR "%s (ni52): individual address setup command failed: %04x\n", dev->name, readw(&ias_cmd->cmd_status)); | |
1da177e4 LT |
655 | return 1; |
656 | } | |
657 | ||
658 | /* | |
659 | * TDR, wire check .. e.g. no resistor e.t.c | |
660 | */ | |
6aa20a22 | 661 | |
2d76c267 | 662 | tdr_cmd = ptr; |
1da177e4 | 663 | |
a197f693 AC |
664 | writew(0, &tdr_cmd->cmd_status); |
665 | writew(CMD_TDR | CMD_LAST, &tdr_cmd->cmd_cmd); | |
666 | writew(0xffff, &tdr_cmd->cmd_link); | |
667 | writew(0, &tdr_cmd->status); | |
1da177e4 | 668 | |
a197f693 AC |
669 | writew(make16(tdr_cmd), &p->scb->cbl_offset); |
670 | writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ | |
1da177e4 LT |
671 | ni_attn586(); |
672 | ||
a197f693 | 673 | wait_for_stat_compl(tdr_cmd); |
1da177e4 | 674 | |
a197f693 AC |
675 | if (!(readw(&tdr_cmd->cmd_status) & STAT_COMPL)) |
676 | printk(KERN_ERR "%s: Problems while running the TDR.\n", | |
677 | dev->name); | |
678 | else { | |
679 | udelay(16); | |
680 | result = readw(&tdr_cmd->status); | |
681 | writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc); | |
1da177e4 LT |
682 | ni_attn586(); /* ack the interrupts */ |
683 | ||
a197f693 | 684 | if (result & TDR_LNK_OK) |
1da177e4 | 685 | ; |
a197f693 AC |
686 | else if (result & TDR_XCVR_PRB) |
687 | printk(KERN_ERR "%s: TDR: Transceiver problem. Check the cable(s)!\n", | |
688 | dev->name); | |
689 | else if (result & TDR_ET_OPN) | |
690 | printk(KERN_ERR "%s: TDR: No correct termination %d clocks away.\n", | |
691 | dev->name, result & TDR_TIMEMASK); | |
692 | else if (result & TDR_ET_SRT) { | |
693 | /* time == 0 -> strange :-) */ | |
694 | if (result & TDR_TIMEMASK) | |
695 | printk(KERN_ERR "%s: TDR: Detected a short circuit %d clocks away.\n", | |
696 | dev->name, result & TDR_TIMEMASK); | |
697 | } else | |
698 | printk(KERN_ERR "%s: TDR: Unknown status %04x\n", | |
699 | dev->name, result); | |
1da177e4 LT |
700 | } |
701 | ||
702 | /* | |
703 | * Multicast setup | |
704 | */ | |
a197f693 | 705 | if (num_addrs && !(dev->flags & IFF_PROMISC)) { |
2d76c267 | 706 | mc_cmd = ptr; |
a197f693 AC |
707 | writew(0, &mc_cmd->cmd_status); |
708 | writew(CMD_MCSETUP | CMD_LAST, &mc_cmd->cmd_cmd); | |
709 | writew(0xffff, &mc_cmd->cmd_link); | |
710 | writew(num_addrs * 6, &mc_cmd->mc_cnt); | |
1da177e4 | 711 | |
a197f693 | 712 | for (i = 0; i < num_addrs; i++, dmi = dmi->next) |
2d76c267 | 713 | memcpy_toio(mc_cmd->mc_list[i], |
a197f693 | 714 | dmi->dmi_addr, 6); |
1da177e4 | 715 | |
a197f693 AC |
716 | writew(make16(mc_cmd), &p->scb->cbl_offset); |
717 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 LT |
718 | ni_attn586(); |
719 | ||
a197f693 | 720 | wait_for_stat_compl(mc_cmd); |
1da177e4 | 721 | |
a197f693 AC |
722 | if ((readw(&mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) |
723 | != (STAT_COMPL|STAT_OK)) | |
724 | printk(KERN_ERR "%s: Can't apply multicast-address-list.\n", dev->name); | |
1da177e4 LT |
725 | } |
726 | ||
727 | /* | |
728 | * alloc nop/xmit-cmds | |
729 | */ | |
730 | #if (NUM_XMIT_BUFFS == 1) | |
a197f693 | 731 | for (i = 0; i < 2; i++) { |
2d76c267 | 732 | p->nop_cmds[i] = ptr; |
a197f693 AC |
733 | writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd); |
734 | writew(0, &p->nop_cmds[i]->cmd_status); | |
735 | writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link); | |
2d76c267 | 736 | ptr = ptr + sizeof(struct nop_cmd_struct); |
1da177e4 LT |
737 | } |
738 | #else | |
a197f693 | 739 | for (i = 0; i < NUM_XMIT_BUFFS; i++) { |
2d76c267 | 740 | p->nop_cmds[i] = ptr; |
a197f693 AC |
741 | writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd); |
742 | writew(0, &p->nop_cmds[i]->cmd_status); | |
743 | writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link); | |
2d76c267 | 744 | ptr = ptr + sizeof(struct nop_cmd_struct); |
1da177e4 LT |
745 | } |
746 | #endif | |
747 | ||
2d76c267 | 748 | ptr = alloc_rfa(dev, ptr); /* init receive-frame-area */ |
1da177e4 LT |
749 | |
750 | /* | |
751 | * alloc xmit-buffs / init xmit_cmds | |
752 | */ | |
a197f693 AC |
753 | for (i = 0; i < NUM_XMIT_BUFFS; i++) { |
754 | /* Transmit cmd/buff 0 */ | |
2d76c267 AV |
755 | p->xmit_cmds[i] = ptr; |
756 | ptr = ptr + sizeof(struct transmit_cmd_struct); | |
757 | p->xmit_cbuffs[i] = ptr; /* char-buffs */ | |
758 | ptr = ptr + XMIT_BUFF_SIZE; | |
759 | p->xmit_buffs[i] = ptr; /* TBD */ | |
760 | ptr = ptr + sizeof(struct tbd_struct); | |
761 | if ((void __iomem *)ptr > (void __iomem *)p->iscp) { | |
a197f693 AC |
762 | printk(KERN_ERR "%s: not enough shared-mem for your configuration!\n", |
763 | dev->name); | |
1da177e4 LT |
764 | return 1; |
765 | } | |
2d76c267 | 766 | memset_io(p->xmit_cmds[i], 0, |
a197f693 | 767 | sizeof(struct transmit_cmd_struct)); |
2d76c267 | 768 | memset_io(p->xmit_buffs[i], 0, |
a197f693 AC |
769 | sizeof(struct tbd_struct)); |
770 | writew(make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]), | |
771 | &p->xmit_cmds[i]->cmd_link); | |
772 | writew(STAT_COMPL, &p->xmit_cmds[i]->cmd_status); | |
773 | writew(CMD_XMIT|CMD_INT, &p->xmit_cmds[i]->cmd_cmd); | |
774 | writew(make16(p->xmit_buffs[i]), &p->xmit_cmds[i]->tbd_offset); | |
775 | writew(0xffff, &p->xmit_buffs[i]->next); | |
776 | writel(make24(p->xmit_cbuffs[i]), &p->xmit_buffs[i]->buffer); | |
1da177e4 LT |
777 | } |
778 | ||
779 | p->xmit_count = 0; | |
780 | p->xmit_last = 0; | |
781 | #ifndef NO_NOPCOMMANDS | |
782 | p->nop_point = 0; | |
783 | #endif | |
784 | ||
785 | /* | |
786 | * 'start transmitter' | |
787 | */ | |
788 | #ifndef NO_NOPCOMMANDS | |
a197f693 AC |
789 | writew(make16(p->nop_cmds[0]), &p->scb->cbl_offset); |
790 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 | 791 | ni_attn586(); |
a197f693 | 792 | wait_for_scb_cmd(dev); |
1da177e4 | 793 | #else |
a197f693 AC |
794 | writew(make16(p->xmit_cmds[0]), &p->xmit_cmds[0]->cmd_link); |
795 | writew(CMD_XMIT | CMD_SUSPEND | CMD_INT, &p->xmit_cmds[0]->cmd_cmd); | |
1da177e4 LT |
796 | #endif |
797 | ||
798 | /* | |
799 | * ack. interrupts | |
800 | */ | |
a197f693 | 801 | writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc); |
1da177e4 | 802 | ni_attn586(); |
a197f693 | 803 | udelay(16); |
1da177e4 LT |
804 | |
805 | ni_enaint(); | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | /****************************************************** | |
811 | * This is a helper routine for ni52_rnr_int() and init586(). | |
812 | * It sets up the Receive Frame Area (RFA). | |
813 | */ | |
814 | ||
2d76c267 | 815 | static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr) |
1da177e4 | 816 | { |
2d76c267 AV |
817 | struct rfd_struct __iomem *rfd = ptr; |
818 | struct rbd_struct __iomem *rbd; | |
1da177e4 LT |
819 | int i; |
820 | struct priv *p = (struct priv *) dev->priv; | |
821 | ||
2d76c267 | 822 | memset_io(rfd, 0, |
a197f693 | 823 | sizeof(struct rfd_struct) * (p->num_recv_buffs + rfdadd)); |
1da177e4 LT |
824 | p->rfd_first = rfd; |
825 | ||
a197f693 AC |
826 | for (i = 0; i < (p->num_recv_buffs + rfdadd); i++) { |
827 | writew(make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd)), | |
828 | &rfd[i].next); | |
829 | writew(0xffff, &rfd[i].rbd_offset); | |
1da177e4 | 830 | } |
a197f693 AC |
831 | /* RU suspend */ |
832 | writeb(RFD_SUSP, &rfd[p->num_recv_buffs-1+rfdadd].last); | |
1da177e4 | 833 | |
2d76c267 | 834 | ptr = rfd + (p->num_recv_buffs + rfdadd); |
1da177e4 | 835 | |
2d76c267 AV |
836 | rbd = ptr; |
837 | ptr = rbd + p->num_recv_buffs; | |
1da177e4 LT |
838 | |
839 | /* clr descriptors */ | |
2d76c267 | 840 | memset_io(rbd, 0, sizeof(struct rbd_struct) * (p->num_recv_buffs)); |
1da177e4 | 841 | |
a197f693 AC |
842 | for (i = 0; i < p->num_recv_buffs; i++) { |
843 | writew(make16(rbd + (i+1) % p->num_recv_buffs), &rbd[i].next); | |
844 | writew(RECV_BUFF_SIZE, &rbd[i].size); | |
845 | writel(make24(ptr), &rbd[i].buffer); | |
2d76c267 | 846 | ptr = ptr + RECV_BUFF_SIZE; |
1da177e4 | 847 | } |
1da177e4 LT |
848 | p->rfd_top = p->rfd_first; |
849 | p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd); | |
850 | ||
a197f693 AC |
851 | writew(make16(p->rfd_first), &p->scb->rfa_offset); |
852 | writew(make16(rbd), &p->rfd_first->rbd_offset); | |
1da177e4 LT |
853 | |
854 | return ptr; | |
855 | } | |
856 | ||
857 | ||
858 | /************************************************** | |
859 | * Interrupt Handler ... | |
860 | */ | |
861 | ||
a197f693 | 862 | static irqreturn_t ni52_interrupt(int irq, void *dev_id) |
1da177e4 LT |
863 | { |
864 | struct net_device *dev = dev_id; | |
a197f693 AC |
865 | unsigned int stat; |
866 | int cnt = 0; | |
1da177e4 LT |
867 | struct priv *p; |
868 | ||
1da177e4 LT |
869 | p = (struct priv *) dev->priv; |
870 | ||
a197f693 | 871 | if (debuglevel > 1) |
1da177e4 LT |
872 | printk("I"); |
873 | ||
a197f693 | 874 | spin_lock(&p->spinlock); |
1da177e4 | 875 | |
a197f693 AC |
876 | wait_for_scb_cmd(dev); /* wait for last command */ |
877 | ||
878 | while ((stat = readb(&p->scb->cus) & STAT_MASK)) { | |
879 | writeb(stat, &p->scb->cmd_cuc); | |
1da177e4 LT |
880 | ni_attn586(); |
881 | ||
a197f693 | 882 | if (stat & STAT_FR) /* received a frame */ |
1da177e4 LT |
883 | ni52_rcv_int(dev); |
884 | ||
a197f693 | 885 | if (stat & STAT_RNR) { /* RU went 'not ready' */ |
1da177e4 | 886 | printk("(R)"); |
a197f693 AC |
887 | if (readb(&p->scb->rus) & RU_SUSPEND) { |
888 | /* special case: RU_SUSPEND */ | |
889 | wait_for_scb_cmd(dev); | |
1da177e4 LT |
890 | p->scb->cmd_ruc = RUC_RESUME; |
891 | ni_attn586(); | |
a197f693 AC |
892 | wait_for_scb_cmd_ruc(dev); |
893 | } else { | |
894 | printk(KERN_ERR "%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n", | |
895 | dev->name, stat, readb(&p->scb->rus)); | |
1da177e4 LT |
896 | ni52_rnr_int(dev); |
897 | } | |
898 | } | |
899 | ||
a197f693 AC |
900 | /* Command with I-bit set complete */ |
901 | if (stat & STAT_CX) | |
1da177e4 LT |
902 | ni52_xmt_int(dev); |
903 | ||
904 | #ifndef NO_NOPCOMMANDS | |
a197f693 AC |
905 | if (stat & STAT_CNA) { /* CU went 'not ready' */ |
906 | if (netif_running(dev)) | |
907 | printk(KERN_ERR "%s: oops! CU has left active state. stat: %04x/%02x.\n", | |
908 | dev->name, stat, readb(&p->scb->cus)); | |
1da177e4 LT |
909 | } |
910 | #endif | |
911 | ||
a197f693 AC |
912 | if (debuglevel > 1) |
913 | printk("%d", cnt++); | |
1da177e4 | 914 | |
a197f693 AC |
915 | /* Wait for ack. (ni52_xmt_int can be faster than ack!!) */ |
916 | wait_for_scb_cmd(dev); | |
917 | if (p->scb->cmd_cuc) { /* timed out? */ | |
918 | printk(KERN_ERR "%s: Acknowledge timed out.\n", | |
919 | dev->name); | |
1da177e4 LT |
920 | ni_disint(); |
921 | break; | |
922 | } | |
923 | } | |
a197f693 | 924 | spin_unlock(&p->spinlock); |
1da177e4 | 925 | |
a197f693 | 926 | if (debuglevel > 1) |
1da177e4 LT |
927 | printk("i"); |
928 | return IRQ_HANDLED; | |
929 | } | |
930 | ||
931 | /******************************************************* | |
932 | * receive-interrupt | |
933 | */ | |
934 | ||
935 | static void ni52_rcv_int(struct net_device *dev) | |
936 | { | |
a197f693 | 937 | int status, cnt = 0; |
1da177e4 LT |
938 | unsigned short totlen; |
939 | struct sk_buff *skb; | |
2d76c267 | 940 | struct rbd_struct __iomem *rbd; |
a197f693 | 941 | struct priv *p = (struct priv *)dev->priv; |
1da177e4 | 942 | |
a197f693 | 943 | if (debuglevel > 0) |
1da177e4 LT |
944 | printk("R"); |
945 | ||
a197f693 | 946 | for (; (status = readb(&p->rfd_top->stat_high)) & RFD_COMPL;) { |
2d76c267 | 947 | rbd = (struct rbd_struct __iomem *) make32(p->rfd_top->rbd_offset); |
a197f693 AC |
948 | if (status & RFD_OK) { /* frame received without error? */ |
949 | totlen = readw(&rbd->status); | |
950 | if (totlen & RBD_LAST) { | |
951 | /* the first and the last buffer? */ | |
952 | totlen &= RBD_MASK; /* length of this frame */ | |
953 | writew(0x00, &rbd->status); | |
954 | skb = (struct sk_buff *)dev_alloc_skb(totlen+2); | |
955 | if (skb != NULL) { | |
956 | skb_reserve(skb, 2); | |
957 | skb_put(skb, totlen); | |
e06ee2bb | 958 | skb_copy_to_linear_data(skb, p->base + (unsigned long) rbd->buffer, totlen); |
a197f693 AC |
959 | skb->protocol = eth_type_trans(skb, dev); |
960 | netif_rx(skb); | |
961 | dev->last_rx = jiffies; | |
962 | p->stats.rx_packets++; | |
963 | p->stats.rx_bytes += totlen; | |
964 | } else | |
965 | p->stats.rx_dropped++; | |
966 | } else { | |
967 | int rstat; | |
968 | /* free all RBD's until RBD_LAST is set */ | |
969 | totlen = 0; | |
970 | while (!((rstat = readw(&rbd->status)) & RBD_LAST)) { | |
971 | totlen += rstat & RBD_MASK; | |
972 | if (!rstat) { | |
973 | printk(KERN_ERR "%s: Whoops .. no end mark in RBD list\n", dev->name); | |
974 | break; | |
1da177e4 | 975 | } |
a197f693 | 976 | writew(0, &rbd->status); |
2d76c267 | 977 | rbd = (struct rbd_struct __iomem *) make32(readl(&rbd->next)); |
1da177e4 | 978 | } |
a197f693 AC |
979 | totlen += rstat & RBD_MASK; |
980 | writew(0, &rbd->status); | |
981 | printk(KERN_ERR "%s: received oversized frame! length: %d\n", | |
982 | dev->name, totlen); | |
983 | p->stats.rx_dropped++; | |
1da177e4 | 984 | } |
a197f693 AC |
985 | } else {/* frame !(ok), only with 'save-bad-frames' */ |
986 | printk(KERN_ERR "%s: oops! rfd-error-status: %04x\n", | |
987 | dev->name, status); | |
1da177e4 LT |
988 | p->stats.rx_errors++; |
989 | } | |
a197f693 AC |
990 | writeb(0, &p->rfd_top->stat_high); |
991 | writeb(RFD_SUSP, &p->rfd_top->last); /* maybe exchange by RFD_LAST */ | |
992 | writew(0xffff, &p->rfd_top->rbd_offset); | |
993 | writeb(0, &p->rfd_last->last); /* delete RFD_SUSP */ | |
1da177e4 | 994 | p->rfd_last = p->rfd_top; |
2d76c267 | 995 | p->rfd_top = (struct rfd_struct __iomem *) make32(p->rfd_top->next); /* step to next RFD */ |
a197f693 | 996 | writew(make16(p->rfd_top), &p->scb->rfa_offset); |
1da177e4 | 997 | |
a197f693 AC |
998 | if (debuglevel > 0) |
999 | printk("%d", cnt++); | |
1da177e4 LT |
1000 | } |
1001 | ||
a197f693 AC |
1002 | if (automatic_resume) { |
1003 | wait_for_scb_cmd(dev); | |
1004 | writeb(RUC_RESUME, &p->scb->cmd_ruc); | |
1da177e4 | 1005 | ni_attn586(); |
a197f693 | 1006 | wait_for_scb_cmd_ruc(dev); |
1da177e4 LT |
1007 | } |
1008 | ||
1009 | #ifdef WAIT_4_BUSY | |
1010 | { | |
1011 | int i; | |
a197f693 AC |
1012 | for (i = 0; i < 1024; i++) { |
1013 | if (p->rfd_top->status) | |
1da177e4 | 1014 | break; |
a197f693 AC |
1015 | udelay(16); |
1016 | if (i == 1023) | |
1017 | printk(KERN_ERR "%s: RU hasn't fetched next RFD (not busy/complete)\n", dev->name); | |
1da177e4 LT |
1018 | } |
1019 | } | |
1020 | #endif | |
a197f693 | 1021 | if (debuglevel > 0) |
1da177e4 LT |
1022 | printk("r"); |
1023 | } | |
1024 | ||
1025 | /********************************************************** | |
1026 | * handle 'Receiver went not ready'. | |
1027 | */ | |
1028 | ||
1029 | static void ni52_rnr_int(struct net_device *dev) | |
1030 | { | |
1031 | struct priv *p = (struct priv *) dev->priv; | |
1032 | ||
1033 | p->stats.rx_errors++; | |
1034 | ||
a197f693 AC |
1035 | wait_for_scb_cmd(dev); /* wait for the last cmd, WAIT_4_FULLSTAT?? */ |
1036 | writeb(RUC_ABORT, &p->scb->cmd_ruc); /* usually the RU is in the 'no resource'-state .. abort it now. */ | |
1da177e4 | 1037 | ni_attn586(); |
a197f693 | 1038 | wait_for_scb_cmd_ruc(dev); /* wait for accept cmd. */ |
1da177e4 | 1039 | |
2d76c267 | 1040 | alloc_rfa(dev, p->rfd_first); |
a197f693 | 1041 | /* maybe add a check here, before restarting the RU */ |
1da177e4 LT |
1042 | startrecv586(dev); /* restart RU */ |
1043 | ||
a197f693 | 1044 | printk(KERN_ERR "%s: Receive-Unit restarted. Status: %04x\n", dev->name, p->scb->rus); |
1da177e4 LT |
1045 | |
1046 | } | |
1047 | ||
1048 | /********************************************************** | |
1049 | * handle xmit - interrupt | |
1050 | */ | |
1051 | ||
1052 | static void ni52_xmt_int(struct net_device *dev) | |
1053 | { | |
1054 | int status; | |
1055 | struct priv *p = (struct priv *) dev->priv; | |
1056 | ||
a197f693 | 1057 | if (debuglevel > 0) |
1da177e4 LT |
1058 | printk("X"); |
1059 | ||
a197f693 AC |
1060 | status = readw(&p->xmit_cmds[p->xmit_last]->cmd_status); |
1061 | if (!(status & STAT_COMPL)) | |
1062 | printk(KERN_ERR "%s: strange .. xmit-int without a 'COMPLETE'\n", dev->name); | |
1da177e4 | 1063 | |
a197f693 | 1064 | if (status & STAT_OK) { |
1da177e4 LT |
1065 | p->stats.tx_packets++; |
1066 | p->stats.collisions += (status & TCMD_MAXCOLLMASK); | |
a197f693 | 1067 | } else { |
1da177e4 | 1068 | p->stats.tx_errors++; |
a197f693 AC |
1069 | if (status & TCMD_LATECOLL) { |
1070 | printk(KERN_ERR "%s: late collision detected.\n", | |
1071 | dev->name); | |
1da177e4 | 1072 | p->stats.collisions++; |
a197f693 | 1073 | } else if (status & TCMD_NOCARRIER) { |
1da177e4 | 1074 | p->stats.tx_carrier_errors++; |
a197f693 AC |
1075 | printk(KERN_ERR "%s: no carrier detected.\n", |
1076 | dev->name); | |
1077 | } else if (status & TCMD_LOSTCTS) | |
1078 | printk(KERN_ERR "%s: loss of CTS detected.\n", | |
1079 | dev->name); | |
1080 | else if (status & TCMD_UNDERRUN) { | |
1da177e4 | 1081 | p->stats.tx_fifo_errors++; |
a197f693 AC |
1082 | printk(KERN_ERR "%s: DMA underrun detected.\n", |
1083 | dev->name); | |
1084 | } else if (status & TCMD_MAXCOLL) { | |
1085 | printk(KERN_ERR "%s: Max. collisions exceeded.\n", | |
1086 | dev->name); | |
1da177e4 LT |
1087 | p->stats.collisions += 16; |
1088 | } | |
1089 | } | |
1da177e4 | 1090 | #if (NUM_XMIT_BUFFS > 1) |
a197f693 | 1091 | if ((++p->xmit_last) == NUM_XMIT_BUFFS) |
1da177e4 LT |
1092 | p->xmit_last = 0; |
1093 | #endif | |
1094 | netif_wake_queue(dev); | |
1095 | } | |
1096 | ||
1097 | /*********************************************************** | |
1098 | * (re)start the receiver | |
1099 | */ | |
1100 | ||
1101 | static void startrecv586(struct net_device *dev) | |
1102 | { | |
1103 | struct priv *p = (struct priv *) dev->priv; | |
1104 | ||
a197f693 AC |
1105 | wait_for_scb_cmd(dev); |
1106 | wait_for_scb_cmd_ruc(dev); | |
1107 | writew(make16(p->rfd_first), &p->scb->rfa_offset); | |
1108 | writeb(RUC_START, &p->scb->cmd_ruc); | |
1da177e4 | 1109 | ni_attn586(); /* start cmd. */ |
a197f693 AC |
1110 | wait_for_scb_cmd_ruc(dev); |
1111 | /* wait for accept cmd. (no timeout!!) */ | |
1da177e4 LT |
1112 | } |
1113 | ||
1114 | static void ni52_timeout(struct net_device *dev) | |
1115 | { | |
1116 | struct priv *p = (struct priv *) dev->priv; | |
1117 | #ifndef NO_NOPCOMMANDS | |
a197f693 | 1118 | if (readb(&p->scb->cus) & CU_ACTIVE) { /* COMMAND-UNIT active? */ |
1da177e4 LT |
1119 | netif_wake_queue(dev); |
1120 | #ifdef DEBUG | |
a197f693 AC |
1121 | printk(KERN_ERR "%s: strange ... timeout with CU active?!?\n", |
1122 | dev->name); | |
1123 | printk(KERN_ERR "%s: X0: %04x N0: %04x N1: %04x %d\n", | |
1124 | dev->name, (int)p->xmit_cmds[0]->cmd_status, | |
1125 | readw(&p->nop_cmds[0]->cmd_status), | |
1126 | readw(&p->nop_cmds[1]->cmd_status), | |
1127 | p->nop_point); | |
1da177e4 | 1128 | #endif |
a197f693 | 1129 | writeb(CUC_ABORT, &p->scb->cmd_cuc); |
1da177e4 | 1130 | ni_attn586(); |
a197f693 AC |
1131 | wait_for_scb_cmd(dev); |
1132 | writew(make16(p->nop_cmds[p->nop_point]), &p->scb->cbl_offset); | |
1133 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 | 1134 | ni_attn586(); |
a197f693 | 1135 | wait_for_scb_cmd(dev); |
1da177e4 LT |
1136 | dev->trans_start = jiffies; |
1137 | return 0; | |
1138 | } | |
1139 | #endif | |
1140 | { | |
1141 | #ifdef DEBUG | |
a197f693 AC |
1142 | printk(KERN_ERR "%s: xmitter timed out, try to restart! stat: %02x\n", |
1143 | dev->name, readb(&p->scb->cus)); | |
1144 | printk(KERN_ERR "%s: command-stats: %04x %04x\n", | |
1145 | dev->name, | |
1146 | readw(&p->xmit_cmds[0]->cmd_status), | |
1147 | readw(&p->xmit_cmds[1]->cmd_status)); | |
1148 | printk(KERN_ERR "%s: check, whether you set the right interrupt number!\n", | |
1149 | dev->name); | |
1da177e4 LT |
1150 | #endif |
1151 | ni52_close(dev); | |
1152 | ni52_open(dev); | |
1153 | } | |
1154 | dev->trans_start = jiffies; | |
1155 | } | |
1156 | ||
1157 | /****************************************************** | |
1158 | * send frame | |
1159 | */ | |
1160 | ||
1161 | static int ni52_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1162 | { | |
a197f693 | 1163 | int len, i; |
1da177e4 LT |
1164 | #ifndef NO_NOPCOMMANDS |
1165 | int next_nop; | |
1166 | #endif | |
1167 | struct priv *p = (struct priv *) dev->priv; | |
1168 | ||
a197f693 AC |
1169 | if (skb->len > XMIT_BUFF_SIZE) { |
1170 | 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); | |
1da177e4 LT |
1171 | return 0; |
1172 | } | |
1173 | ||
1174 | netif_stop_queue(dev); | |
1175 | ||
a197f693 AC |
1176 | skb_copy_from_linear_data(skb, (char *)p->xmit_cbuffs[p->xmit_count], |
1177 | skb->len); | |
1178 | len = skb->len; | |
1179 | if (len < ETH_ZLEN) { | |
1180 | len = ETH_ZLEN; | |
1181 | memset((char *)p->xmit_cbuffs[p->xmit_count]+skb->len, 0, | |
1182 | len - skb->len); | |
1da177e4 | 1183 | } |
1da177e4 LT |
1184 | |
1185 | #if (NUM_XMIT_BUFFS == 1) | |
1186 | # ifdef NO_NOPCOMMANDS | |
1187 | ||
1188 | #ifdef DEBUG | |
a197f693 AC |
1189 | if (p->scb->cus & CU_ACTIVE) { |
1190 | printk(KERN_ERR "%s: Hmmm .. CU is still running and we wanna send a new packet.\n", dev->name); | |
1191 | printk(KERN_ERR "%s: stat: %04x %04x\n", | |
1192 | dev->name, readb(&p->scb->cus), | |
1193 | readw(&p->xmit_cmds[0]->cmd_status)); | |
1194 | } | |
1da177e4 | 1195 | #endif |
a197f693 AC |
1196 | writew(TBD_LAST | len, &p->xmit_buffs[0]->size);; |
1197 | for (i = 0; i < 16; i++) { | |
1198 | writew(0, &p->xmit_cmds[0]->cmd_status); | |
1199 | wait_for_scb_cmd(dev); | |
1200 | if ((readb(&p->scb->cus) & CU_STATUS) == CU_SUSPEND) | |
1201 | writeb(CUC_RESUME, &p->scb->cmd_cuc); | |
1202 | else { | |
1203 | writew(make16(p->xmit_cmds[0]), &p->scb->cbl_offset); | |
1204 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 | 1205 | } |
a197f693 | 1206 | ni_attn586(); |
1da177e4 | 1207 | dev->trans_start = jiffies; |
a197f693 AC |
1208 | if (!i) |
1209 | dev_kfree_skb(skb); | |
1210 | wait_for_scb_cmd(dev); | |
1211 | /* test it, because CU sometimes doesn't start immediately */ | |
1212 | if (readb(&p->scb->cus) & CU_ACTIVE) | |
1213 | break; | |
1214 | if (readw(&p->xmit_cmds[0]->cmd_status)) | |
1215 | break; | |
1216 | if (i == 15) | |
1217 | printk(KERN_WARNING "%s: Can't start transmit-command.\n", dev->name); | |
1218 | } | |
1219 | # else | |
1220 | next_nop = (p->nop_point + 1) & 0x1; | |
1221 | writew(TBD_LAST | len, &p->xmit_buffs[0]->size); | |
1222 | writew(make16(p->nop_cmds[next_nop]), &p->xmit_cmds[0]->cmd_link); | |
1223 | writew(make16(p->nop_cmds[next_nop]), | |
1224 | &p->nop_cmds[next_nop]->cmd_link); | |
1225 | writew(0, &p->xmit_cmds[0]->cmd_status); | |
1226 | writew(0, &p->nop_cmds[next_nop]->cmd_status); | |
1227 | ||
1228 | writew(make16(p->xmit_cmds[0]), &p->nop_cmds[p->nop_point]->cmd_link); | |
1229 | dev->trans_start = jiffies; | |
1230 | p->nop_point = next_nop; | |
1231 | dev_kfree_skb(skb); | |
1da177e4 LT |
1232 | # endif |
1233 | #else | |
a197f693 AC |
1234 | writew(TBD_LAST | len, &p->xmit_buffs[p->xmit_count]->size); |
1235 | next_nop = p->xmit_count + 1 | |
1236 | if (next_nop == NUM_XMIT_BUFFS) | |
1237 | next_nop = 0; | |
1238 | writew(0, &p->xmit_cmds[p->xmit_count]->cmd_status); | |
1239 | /* linkpointer of xmit-command already points to next nop cmd */ | |
1240 | writew(make16(p->nop_cmds[next_nop]), | |
1241 | &p->nop_cmds[next_nop]->cmd_link); | |
1242 | writew(0, &p->nop_cmds[next_nop]->cmd_status); | |
1243 | writew(make16(p->xmit_cmds[p->xmit_count]), | |
1244 | &p->nop_cmds[p->xmit_count]->cmd_link); | |
1245 | dev->trans_start = jiffies; | |
1246 | p->xmit_count = next_nop; | |
1247 | { | |
1248 | unsigned long flags; | |
1249 | spin_lock_irqsave(&p->spinlock); | |
1250 | if (p->xmit_count != p->xmit_last) | |
1251 | netif_wake_queue(dev); | |
1252 | spin_unlock_irqrestore(&p->spinlock); | |
1da177e4 | 1253 | } |
a197f693 AC |
1254 | dev_kfree_skb(skb); |
1255 | #endif | |
1da177e4 LT |
1256 | return 0; |
1257 | } | |
1258 | ||
1259 | /******************************************* | |
1260 | * Someone wanna have the statistics | |
1261 | */ | |
1262 | ||
1263 | static struct net_device_stats *ni52_get_stats(struct net_device *dev) | |
1264 | { | |
1265 | struct priv *p = (struct priv *) dev->priv; | |
a197f693 AC |
1266 | unsigned short crc, aln, rsc, ovrn; |
1267 | ||
1268 | /* Get error-statistics from the ni82586 */ | |
1269 | crc = readw(&p->scb->crc_errs); | |
1270 | writew(0, &p->scb->crc_errs); | |
1271 | aln = readw(&p->scb->aln_errs); | |
1272 | writew(0, &p->scb->aln_errs); | |
1273 | rsc = readw(&p->scb->rsc_errs); | |
1274 | writew(0, &p->scb->rsc_errs); | |
1275 | ovrn = readw(&p->scb->ovrn_errs); | |
1276 | writew(0, &p->scb->ovrn_errs); | |
1da177e4 LT |
1277 | |
1278 | p->stats.rx_crc_errors += crc; | |
1279 | p->stats.rx_fifo_errors += ovrn; | |
1280 | p->stats.rx_frame_errors += aln; | |
1281 | p->stats.rx_dropped += rsc; | |
1282 | ||
1283 | return &p->stats; | |
1284 | } | |
1285 | ||
1286 | /******************************************************** | |
1287 | * Set MC list .. | |
1288 | */ | |
1289 | ||
1290 | static void set_multicast_list(struct net_device *dev) | |
1291 | { | |
1292 | netif_stop_queue(dev); | |
1293 | ni_disint(); | |
1294 | alloc586(dev); | |
1295 | init586(dev); | |
1296 | startrecv586(dev); | |
1297 | ni_enaint(); | |
1298 | netif_wake_queue(dev); | |
1299 | } | |
1300 | ||
1301 | #ifdef MODULE | |
1302 | static struct net_device *dev_ni52; | |
1303 | ||
1304 | module_param(io, int, 0); | |
1305 | module_param(irq, int, 0); | |
1306 | module_param(memstart, long, 0); | |
1307 | module_param(memend, long, 0); | |
1308 | MODULE_PARM_DESC(io, "NI5210 I/O base address,required"); | |
1309 | MODULE_PARM_DESC(irq, "NI5210 IRQ number,required"); | |
1310 | MODULE_PARM_DESC(memstart, "NI5210 memory base address,required"); | |
1311 | MODULE_PARM_DESC(memend, "NI5210 memory end address,required"); | |
1312 | ||
19a8664d | 1313 | int __init init_module(void) |
1da177e4 | 1314 | { |
a197f693 AC |
1315 | if (io <= 0x0 || !memend || !memstart || irq < 2) { |
1316 | printk(KERN_ERR "ni52: Autoprobing not allowed for modules.\n"); | |
1317 | printk(KERN_ERR "ni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n"); | |
1da177e4 LT |
1318 | return -ENODEV; |
1319 | } | |
1320 | dev_ni52 = ni52_probe(-1); | |
1321 | if (IS_ERR(dev_ni52)) | |
1322 | return PTR_ERR(dev_ni52); | |
1323 | return 0; | |
1324 | } | |
1325 | ||
afc8eb46 | 1326 | void __exit cleanup_module(void) |
1da177e4 LT |
1327 | { |
1328 | unregister_netdev(dev_ni52); | |
1329 | release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE); | |
1330 | free_netdev(dev_ni52); | |
1331 | } | |
1332 | #endif /* MODULE */ | |
1333 | ||
1da177e4 LT |
1334 | MODULE_LICENSE("GPL"); |
1335 | ||
1336 | /* | |
1337 | * END: linux/drivers/net/ni52.c | |
1338 | */ |