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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 | |
36 | * (before getting an i82596 (yes 596 not 586) manual, the existing drivers helped | |
37 | * me a lot to understand this tricky chip.) | |
38 | * | |
39 | * Known Problems: | |
40 | * The internal sysbus seems to be slow. So we often lose packets because of | |
41 | * overruns while receiving from a fast remote host. | |
42 | * This can slow down TCP connections. Maybe the newer ni5210 cards are better. | |
43 | * my experience is, that if a machine sends with more than about 500-600K/s | |
44 | * the fifo/sysbus overflows. | |
45 | * | |
46 | * IMPORTANT NOTE: | |
47 | * On fast networks, it's a (very) good idea to have 16K shared memory. With | |
48 | * 8K, we can store only 4 receive frames, so it can (easily) happen that a remote | |
49 | * machine 'overruns' our system. | |
50 | * | |
51 | * Known i82586/card problems (I'm sure, there are many more!): | |
52 | * Running the NOP-mode, the i82586 sometimes seems to forget to report | |
53 | * every xmit-interrupt until we restart the CU. | |
54 | * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit | |
55 | * in the RBD-Struct which indicates an end of the RBD queue. | |
56 | * Instead, the RU fetches another (randomly selected and | |
57 | * usually used) RBD and begins to fill it. (Maybe, this happens only if | |
58 | * the last buffer from the previous RFD fits exact into the queue and | |
59 | * the next RFD can't fetch an initial RBD. Anyone knows more? ) | |
60 | * | |
61 | * results from ftp performance tests with Linux 1.2.5 | |
62 | * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s) | |
63 | * sending in NOP-mode: peak performance up to 530K/s (but better don't run this mode) | |
64 | */ | |
65 | ||
66 | /* | |
67 | * 29.Sept.96: virt_to_bus changes for new memory scheme | |
68 | * 19.Feb.96: more Mcast changes, module support (MH) | |
69 | * | |
70 | * 18.Nov.95: Mcast changes (AC). | |
71 | * | |
72 | * 23.April.95: fixed(?) receiving problems by configuring a RFD more | |
73 | * than the number of RBD's. Can maybe cause other problems. | |
74 | * 18.April.95: Added MODULE support (MH) | |
75 | * 17.April.95: MC related changes in init586() and set_multicast_list(). | |
76 | * removed use of 'jiffies' in init586() (MH) | |
77 | * | |
78 | * 19.Sep.94: Added Multicast support (not tested yet) (MH) | |
79 | * | |
80 | * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling. | |
81 | * Now, every RFD has exact one RBD. (MH) | |
82 | * | |
83 | * 14.Sep.94: added promiscuous mode, a few cleanups (MH) | |
84 | * | |
85 | * 19.Aug.94: changed request_irq() parameter (MH) | |
86 | * | |
87 | * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH) | |
88 | * | |
89 | * 19.July.94: lotsa cleanups .. (MH) | |
90 | * | |
91 | * 17.July.94: some patches ... verified to run with 1.1.29 (MH) | |
92 | * | |
93 | * 4.July.94: patches for Linux 1.1.24 (MH) | |
94 | * | |
95 | * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH) | |
96 | * | |
97 | * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff, too (MH) | |
98 | * | |
99 | * < 30.Sep.93: first versions | |
100 | */ | |
101 | ||
102 | static int debuglevel; /* debug-printk 0: off 1: a few 2: more */ | |
103 | static int automatic_resume; /* experimental .. better should be zero */ | |
104 | static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */ | |
105 | static int fifo=0x8; /* don't change */ | |
106 | ||
107 | /* #define REALLY_SLOW_IO */ | |
108 | ||
109 | #include <linux/module.h> | |
110 | #include <linux/kernel.h> | |
111 | #include <linux/string.h> | |
112 | #include <linux/errno.h> | |
113 | #include <linux/ioport.h> | |
114 | #include <linux/slab.h> | |
115 | #include <linux/interrupt.h> | |
116 | #include <linux/delay.h> | |
117 | #include <linux/init.h> | |
118 | #include <linux/bitops.h> | |
119 | #include <asm/io.h> | |
120 | ||
121 | #include <linux/netdevice.h> | |
122 | #include <linux/etherdevice.h> | |
123 | #include <linux/skbuff.h> | |
124 | ||
125 | #include "ni52.h" | |
126 | ||
127 | #define DRV_NAME "ni52" | |
128 | ||
129 | #define DEBUG /* debug on */ | |
130 | #define SYSBUSVAL 1 /* 8 Bit */ | |
131 | ||
132 | #define ni_attn586() {outb(0,dev->base_addr+NI52_ATTENTION);} | |
133 | #define ni_reset586() {outb(0,dev->base_addr+NI52_RESET);} | |
134 | #define ni_disint() {outb(0,dev->base_addr+NI52_INTDIS);} | |
135 | #define ni_enaint() {outb(0,dev->base_addr+NI52_INTENA);} | |
136 | ||
137 | #define make32(ptr16) (p->memtop + (short) (ptr16) ) | |
138 | #define make24(ptr32) ( ((char *) (ptr32)) - p->base) | |
139 | #define make16(ptr32) ((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )) | |
140 | ||
141 | /******************* how to calculate the buffers ***************************** | |
142 | ||
143 | * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works | |
144 | * --------------- in a different (more stable?) mode. Only in this mode it's | |
145 | * possible to configure the driver with 'NO_NOPCOMMANDS' | |
146 | ||
147 | sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8; | |
148 | sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT | |
149 | sizeof(rfd) = 24; sizeof(rbd) = 12; | |
150 | sizeof(tbd) = 8; sizeof(transmit_cmd) = 16; | |
151 | sizeof(nop_cmd) = 8; | |
152 | ||
153 | * if you don't know the driver, better do not change these values: */ | |
154 | ||
155 | #define RECV_BUFF_SIZE 1524 /* slightly oversized */ | |
156 | #define XMIT_BUFF_SIZE 1524 /* slightly oversized */ | |
157 | #define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */ | |
158 | #define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */ | |
159 | #define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */ | |
160 | #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */ | |
161 | ||
162 | /**************************************************************************/ | |
163 | ||
164 | /* different DELAYs */ | |
165 | #define DELAY(x) mdelay(32 * x); | |
166 | #define DELAY_16(); { udelay(16); } | |
167 | #define DELAY_18(); { udelay(4); } | |
168 | ||
169 | /* wait for command with timeout: */ | |
170 | #define WAIT_4_SCB_CMD() \ | |
171 | { int i; \ | |
172 | for(i=0;i<16384;i++) { \ | |
173 | if(!p->scb->cmd_cuc) break; \ | |
174 | DELAY_18(); \ | |
175 | if(i == 16383) { \ | |
176 | printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \ | |
177 | if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } } | |
178 | ||
179 | #define WAIT_4_SCB_CMD_RUC() { int i; \ | |
180 | for(i=0;i<16384;i++) { \ | |
181 | if(!p->scb->cmd_ruc) break; \ | |
182 | DELAY_18(); \ | |
183 | if(i == 16383) { \ | |
184 | printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \ | |
185 | if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } } | |
186 | ||
187 | #define WAIT_4_STAT_COMPL(addr) { int i; \ | |
188 | for(i=0;i<32767;i++) { \ | |
189 | if((addr)->cmd_status & STAT_COMPL) break; \ | |
190 | DELAY_16(); DELAY_16(); } } | |
191 | ||
192 | #define NI52_TOTAL_SIZE 16 | |
193 | #define NI52_ADDR0 0x02 | |
194 | #define NI52_ADDR1 0x07 | |
195 | #define NI52_ADDR2 0x01 | |
196 | ||
197 | static int ni52_probe1(struct net_device *dev,int ioaddr); | |
7d12e780 | 198 | static irqreturn_t ni52_interrupt(int irq,void *dev_id); |
1da177e4 LT |
199 | static int ni52_open(struct net_device *dev); |
200 | static int ni52_close(struct net_device *dev); | |
201 | static int ni52_send_packet(struct sk_buff *,struct net_device *); | |
202 | static struct net_device_stats *ni52_get_stats(struct net_device *dev); | |
203 | static void set_multicast_list(struct net_device *dev); | |
204 | static void ni52_timeout(struct net_device *dev); | |
205 | #if 0 | |
206 | static void ni52_dump(struct net_device *,void *); | |
207 | #endif | |
208 | ||
209 | /* helper-functions */ | |
210 | static int init586(struct net_device *dev); | |
211 | static int check586(struct net_device *dev,char *where,unsigned size); | |
212 | static void alloc586(struct net_device *dev); | |
213 | static void startrecv586(struct net_device *dev); | |
214 | static void *alloc_rfa(struct net_device *dev,void *ptr); | |
215 | static void ni52_rcv_int(struct net_device *dev); | |
216 | static void ni52_xmt_int(struct net_device *dev); | |
217 | static void ni52_rnr_int(struct net_device *dev); | |
218 | ||
219 | struct priv | |
220 | { | |
221 | struct net_device_stats stats; | |
222 | unsigned long base; | |
223 | char *memtop; | |
224 | long int lock; | |
225 | int reseted; | |
226 | volatile struct rfd_struct *rfd_last,*rfd_top,*rfd_first; | |
227 | volatile struct scp_struct *scp; /* volatile is important */ | |
228 | volatile struct iscp_struct *iscp; /* volatile is important */ | |
229 | volatile struct scb_struct *scb; /* volatile is important */ | |
230 | volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS]; | |
231 | #if (NUM_XMIT_BUFFS == 1) | |
232 | volatile struct transmit_cmd_struct *xmit_cmds[2]; | |
233 | volatile struct nop_cmd_struct *nop_cmds[2]; | |
234 | #else | |
235 | volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS]; | |
236 | volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS]; | |
237 | #endif | |
238 | volatile int nop_point,num_recv_buffs; | |
239 | volatile char *xmit_cbuffs[NUM_XMIT_BUFFS]; | |
240 | volatile int xmit_count,xmit_last; | |
241 | }; | |
242 | ||
243 | /********************************************** | |
244 | * close device | |
245 | */ | |
246 | static int ni52_close(struct net_device *dev) | |
247 | { | |
248 | free_irq(dev->irq, dev); | |
249 | ||
250 | ni_reset586(); /* the hard way to stop the receiver */ | |
251 | ||
252 | netif_stop_queue(dev); | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | /********************************************** | |
258 | * open device | |
259 | */ | |
260 | static int ni52_open(struct net_device *dev) | |
261 | { | |
262 | int ret; | |
263 | ||
264 | ni_disint(); | |
265 | alloc586(dev); | |
266 | init586(dev); | |
267 | startrecv586(dev); | |
268 | ni_enaint(); | |
269 | ||
270 | ret = request_irq(dev->irq, &ni52_interrupt,0,dev->name,dev); | |
271 | if (ret) | |
272 | { | |
273 | ni_reset586(); | |
274 | return ret; | |
275 | } | |
276 | ||
277 | netif_start_queue(dev); | |
278 | ||
279 | return 0; /* most done by init */ | |
280 | } | |
281 | ||
282 | /********************************************** | |
283 | * Check to see if there's an 82586 out there. | |
284 | */ | |
285 | static int check586(struct net_device *dev,char *where,unsigned size) | |
286 | { | |
287 | struct priv pb; | |
288 | struct priv *p = /* (struct priv *) dev->priv*/ &pb; | |
289 | char *iscp_addrs[2]; | |
290 | int i; | |
291 | ||
292 | p->base = (unsigned long) isa_bus_to_virt((unsigned long)where) + size - 0x01000000; | |
293 | p->memtop = isa_bus_to_virt((unsigned long)where) + size; | |
294 | p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS); | |
295 | memset((char *)p->scp,0, sizeof(struct scp_struct)); | |
296 | for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */ | |
297 | if(((char *)p->scp)[i]) | |
298 | return 0; | |
299 | p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */ | |
300 | if(p->scp->sysbus != SYSBUSVAL) | |
301 | return 0; | |
302 | ||
303 | iscp_addrs[0] = isa_bus_to_virt((unsigned long)where); | |
304 | iscp_addrs[1]= (char *) p->scp - sizeof(struct iscp_struct); | |
305 | ||
306 | for(i=0;i<2;i++) | |
307 | { | |
308 | p->iscp = (struct iscp_struct *) iscp_addrs[i]; | |
309 | memset((char *)p->iscp,0, sizeof(struct iscp_struct)); | |
310 | ||
311 | p->scp->iscp = make24(p->iscp); | |
312 | p->iscp->busy = 1; | |
313 | ||
314 | ni_reset586(); | |
315 | ni_attn586(); | |
316 | DELAY(1); /* wait a while... */ | |
317 | ||
318 | if(p->iscp->busy) /* i82586 clears 'busy' after successful init */ | |
319 | return 0; | |
320 | } | |
321 | return 1; | |
322 | } | |
323 | ||
324 | /****************************************************************** | |
325 | * set iscp at the right place, called by ni52_probe1 and open586. | |
326 | */ | |
327 | static void alloc586(struct net_device *dev) | |
328 | { | |
329 | struct priv *p = (struct priv *) dev->priv; | |
330 | ||
331 | ni_reset586(); | |
332 | DELAY(1); | |
333 | ||
334 | p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS); | |
335 | p->scb = (struct scb_struct *) isa_bus_to_virt(dev->mem_start); | |
336 | p->iscp = (struct iscp_struct *) ((char *)p->scp - sizeof(struct iscp_struct)); | |
337 | ||
338 | memset((char *) p->iscp,0,sizeof(struct iscp_struct)); | |
339 | memset((char *) p->scp ,0,sizeof(struct scp_struct)); | |
340 | ||
341 | p->scp->iscp = make24(p->iscp); | |
342 | p->scp->sysbus = SYSBUSVAL; | |
343 | p->iscp->scb_offset = make16(p->scb); | |
344 | ||
345 | p->iscp->busy = 1; | |
346 | ni_reset586(); | |
347 | ni_attn586(); | |
348 | ||
349 | DELAY(1); | |
350 | ||
351 | if(p->iscp->busy) | |
352 | printk("%s: Init-Problems (alloc).\n",dev->name); | |
353 | ||
354 | p->reseted = 0; | |
355 | ||
356 | memset((char *)p->scb,0,sizeof(struct scb_struct)); | |
357 | } | |
358 | ||
359 | /* set: io,irq,memstart,memend or set it when calling insmod */ | |
360 | static int irq=9; | |
361 | static int io=0x300; | |
362 | static long memstart; /* e.g 0xd0000 */ | |
363 | static long memend; /* e.g 0xd4000 */ | |
364 | ||
365 | /********************************************** | |
366 | * probe the ni5210-card | |
367 | */ | |
368 | struct net_device * __init ni52_probe(int unit) | |
369 | { | |
370 | struct net_device *dev = alloc_etherdev(sizeof(struct priv)); | |
371 | static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0}; | |
372 | int *port; | |
373 | int err = 0; | |
374 | ||
375 | if (!dev) | |
376 | return ERR_PTR(-ENOMEM); | |
377 | ||
378 | if (unit >= 0) { | |
379 | sprintf(dev->name, "eth%d", unit); | |
380 | netdev_boot_setup_check(dev); | |
381 | io = dev->base_addr; | |
382 | irq = dev->irq; | |
383 | memstart = dev->mem_start; | |
384 | memend = dev->mem_end; | |
385 | } | |
386 | ||
387 | SET_MODULE_OWNER(dev); | |
388 | ||
389 | if (io > 0x1ff) { /* Check a single specified location. */ | |
390 | err = ni52_probe1(dev, io); | |
391 | } else if (io > 0) { /* Don't probe at all. */ | |
392 | err = -ENXIO; | |
393 | } else { | |
394 | for (port = ports; *port && ni52_probe1(dev, *port) ; port++) | |
395 | ; | |
396 | if (*port) | |
397 | goto got_it; | |
398 | #ifdef FULL_IO_PROBE | |
399 | for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8) | |
400 | ; | |
401 | if (io < 0x400) | |
402 | goto got_it; | |
403 | #endif | |
404 | err = -ENODEV; | |
405 | } | |
406 | if (err) | |
407 | goto out; | |
408 | got_it: | |
409 | err = register_netdev(dev); | |
410 | if (err) | |
411 | goto out1; | |
412 | return dev; | |
413 | out1: | |
414 | release_region(dev->base_addr, NI52_TOTAL_SIZE); | |
415 | out: | |
416 | free_netdev(dev); | |
417 | return ERR_PTR(err); | |
418 | } | |
419 | ||
420 | static int __init ni52_probe1(struct net_device *dev,int ioaddr) | |
421 | { | |
422 | int i, size, retval; | |
423 | ||
424 | dev->base_addr = ioaddr; | |
425 | dev->irq = irq; | |
426 | dev->mem_start = memstart; | |
427 | dev->mem_end = memend; | |
428 | ||
429 | if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME)) | |
430 | return -EBUSY; | |
431 | ||
432 | if( !(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) || | |
433 | !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) { | |
434 | retval = -ENODEV; | |
435 | goto out; | |
436 | } | |
437 | ||
438 | for(i=0;i<ETH_ALEN;i++) | |
439 | dev->dev_addr[i] = inb(dev->base_addr+i); | |
440 | ||
441 | if(dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1 | |
442 | || dev->dev_addr[2] != NI52_ADDR2) { | |
443 | retval = -ENODEV; | |
444 | goto out; | |
445 | } | |
446 | ||
447 | printk(KERN_INFO "%s: NI5210 found at %#3lx, ",dev->name,dev->base_addr); | |
448 | ||
449 | /* | |
450 | * check (or search) IO-Memory, 8K and 16K | |
451 | */ | |
452 | #ifdef MODULE | |
453 | size = dev->mem_end - dev->mem_start; | |
454 | if(size != 0x2000 && size != 0x4000) { | |
455 | printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n",dev->name,size); | |
456 | retval = -ENODEV; | |
457 | goto out; | |
458 | } | |
459 | if(!check586(dev,(char *) dev->mem_start,size)) { | |
460 | printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size); | |
461 | retval = -ENODEV; | |
462 | goto out; | |
463 | } | |
464 | #else | |
465 | if(dev->mem_start != 0) /* no auto-mem-probe */ | |
466 | { | |
467 | size = 0x4000; /* check for 16K mem */ | |
468 | if(!check586(dev,(char *) dev->mem_start,size)) { | |
469 | size = 0x2000; /* check for 8K mem */ | |
470 | if(!check586(dev,(char *) dev->mem_start,size)) { | |
471 | printk("?memprobe, Can't find memory at 0x%lx!\n",dev->mem_start); | |
472 | retval = -ENODEV; | |
473 | goto out; | |
474 | } | |
475 | } | |
476 | } | |
477 | else | |
478 | { | |
479 | static long memaddrs[] = { 0xc8000,0xca000,0xcc000,0xce000,0xd0000,0xd2000, | |
480 | 0xd4000,0xd6000,0xd8000,0xda000,0xdc000, 0 }; | |
481 | for(i=0;;i++) | |
482 | { | |
483 | if(!memaddrs[i]) { | |
484 | printk("?memprobe, Can't find io-memory!\n"); | |
485 | retval = -ENODEV; | |
486 | goto out; | |
487 | } | |
488 | dev->mem_start = memaddrs[i]; | |
489 | size = 0x2000; /* check for 8K mem */ | |
490 | if(check586(dev,(char *)dev->mem_start,size)) /* 8K-check */ | |
491 | break; | |
492 | size = 0x4000; /* check for 16K mem */ | |
493 | if(check586(dev,(char *)dev->mem_start,size)) /* 16K-check */ | |
494 | break; | |
495 | } | |
496 | } | |
497 | dev->mem_end = dev->mem_start + size; /* set mem_end showed by 'ifconfig' */ | |
498 | #endif | |
499 | ||
500 | memset((char *) dev->priv,0,sizeof(struct priv)); | |
501 | ||
502 | ((struct priv *) (dev->priv))->memtop = isa_bus_to_virt(dev->mem_start) + size; | |
503 | ((struct priv *) (dev->priv))->base = (unsigned long) isa_bus_to_virt(dev->mem_start) + size - 0x01000000; | |
504 | alloc586(dev); | |
505 | ||
506 | /* set number of receive-buffs according to memsize */ | |
507 | if(size == 0x2000) | |
508 | ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8; | |
509 | else | |
510 | ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16; | |
511 | ||
512 | printk("Memaddr: 0x%lx, Memsize: %d, ",dev->mem_start,size); | |
513 | ||
514 | if(dev->irq < 2) | |
515 | { | |
516 | unsigned long irq_mask; | |
517 | ||
518 | irq_mask = probe_irq_on(); | |
519 | ni_reset586(); | |
520 | ni_attn586(); | |
521 | ||
522 | mdelay(20); | |
523 | dev->irq = probe_irq_off(irq_mask); | |
524 | if(!dev->irq) | |
525 | { | |
526 | printk("?autoirq, Failed to detect IRQ line!\n"); | |
527 | retval = -EAGAIN; | |
528 | goto out; | |
529 | } | |
530 | printk("IRQ %d (autodetected).\n",dev->irq); | |
531 | } | |
532 | else { | |
533 | if(dev->irq == 2) | |
534 | dev->irq = 9; | |
535 | printk("IRQ %d (assigned and not checked!).\n",dev->irq); | |
536 | } | |
537 | ||
538 | dev->open = ni52_open; | |
539 | dev->stop = ni52_close; | |
540 | dev->get_stats = ni52_get_stats; | |
541 | dev->tx_timeout = ni52_timeout; | |
542 | dev->watchdog_timeo = HZ/20; | |
543 | dev->hard_start_xmit = ni52_send_packet; | |
544 | dev->set_multicast_list = set_multicast_list; | |
545 | ||
546 | dev->if_port = 0; | |
547 | ||
548 | return 0; | |
549 | out: | |
550 | release_region(ioaddr, NI52_TOTAL_SIZE); | |
551 | return retval; | |
552 | } | |
553 | ||
554 | /********************************************** | |
555 | * init the chip (ni52-interrupt should be disabled?!) | |
556 | * needs a correct 'allocated' memory | |
557 | */ | |
558 | ||
559 | static int init586(struct net_device *dev) | |
560 | { | |
561 | void *ptr; | |
562 | int i,result=0; | |
563 | struct priv *p = (struct priv *) dev->priv; | |
564 | volatile struct configure_cmd_struct *cfg_cmd; | |
565 | volatile struct iasetup_cmd_struct *ias_cmd; | |
566 | volatile struct tdr_cmd_struct *tdr_cmd; | |
567 | volatile struct mcsetup_cmd_struct *mc_cmd; | |
568 | struct dev_mc_list *dmi=dev->mc_list; | |
569 | int num_addrs=dev->mc_count; | |
570 | ||
571 | ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct)); | |
572 | ||
573 | cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */ | |
574 | cfg_cmd->cmd_status = 0; | |
575 | cfg_cmd->cmd_cmd = CMD_CONFIGURE | CMD_LAST; | |
576 | cfg_cmd->cmd_link = 0xffff; | |
577 | ||
578 | cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */ | |
579 | cfg_cmd->fifo = fifo; /* fifo-limit (8=tx:32/rx:64) */ | |
580 | cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */ | |
581 | cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */ | |
582 | cfg_cmd->priority = 0x00; | |
583 | cfg_cmd->ifs = 0x60; | |
584 | cfg_cmd->time_low = 0x00; | |
585 | cfg_cmd->time_high = 0xf2; | |
586 | cfg_cmd->promisc = 0; | |
587 | if(dev->flags & IFF_ALLMULTI) { | |
588 | int len = ((char *) p->iscp - (char *) ptr - 8) / 6; | |
589 | if(num_addrs > len) { | |
590 | printk("%s: switching to promisc. mode\n",dev->name); | |
591 | dev->flags|=IFF_PROMISC; | |
592 | } | |
593 | } | |
594 | if(dev->flags&IFF_PROMISC) | |
595 | { | |
596 | cfg_cmd->promisc=1; | |
597 | dev->flags|=IFF_PROMISC; | |
598 | } | |
599 | cfg_cmd->carr_coll = 0x00; | |
600 | ||
601 | p->scb->cbl_offset = make16(cfg_cmd); | |
602 | p->scb->cmd_ruc = 0; | |
603 | ||
604 | p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */ | |
605 | ni_attn586(); | |
606 | ||
607 | WAIT_4_STAT_COMPL(cfg_cmd); | |
608 | ||
609 | if((cfg_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK)) | |
610 | { | |
611 | printk("%s: configure command failed: %x\n",dev->name,cfg_cmd->cmd_status); | |
612 | return 1; | |
613 | } | |
614 | ||
615 | /* | |
616 | * individual address setup | |
617 | */ | |
618 | ||
619 | ias_cmd = (struct iasetup_cmd_struct *)ptr; | |
620 | ||
621 | ias_cmd->cmd_status = 0; | |
622 | ias_cmd->cmd_cmd = CMD_IASETUP | CMD_LAST; | |
623 | ias_cmd->cmd_link = 0xffff; | |
624 | ||
625 | memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN); | |
626 | ||
627 | p->scb->cbl_offset = make16(ias_cmd); | |
628 | ||
629 | p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */ | |
630 | ni_attn586(); | |
631 | ||
632 | WAIT_4_STAT_COMPL(ias_cmd); | |
633 | ||
634 | if((ias_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) { | |
635 | printk("%s (ni52): individual address setup command failed: %04x\n",dev->name,ias_cmd->cmd_status); | |
636 | return 1; | |
637 | } | |
638 | ||
639 | /* | |
640 | * TDR, wire check .. e.g. no resistor e.t.c | |
641 | */ | |
6aa20a22 | 642 | |
1da177e4 LT |
643 | tdr_cmd = (struct tdr_cmd_struct *)ptr; |
644 | ||
645 | tdr_cmd->cmd_status = 0; | |
646 | tdr_cmd->cmd_cmd = CMD_TDR | CMD_LAST; | |
647 | tdr_cmd->cmd_link = 0xffff; | |
648 | tdr_cmd->status = 0; | |
649 | ||
650 | p->scb->cbl_offset = make16(tdr_cmd); | |
651 | p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */ | |
652 | ni_attn586(); | |
653 | ||
654 | WAIT_4_STAT_COMPL(tdr_cmd); | |
655 | ||
656 | if(!(tdr_cmd->cmd_status & STAT_COMPL)) | |
657 | { | |
658 | printk("%s: Problems while running the TDR.\n",dev->name); | |
659 | } | |
660 | else | |
661 | { | |
662 | DELAY_16(); /* wait for result */ | |
663 | result = tdr_cmd->status; | |
664 | ||
665 | p->scb->cmd_cuc = p->scb->cus & STAT_MASK; | |
666 | ni_attn586(); /* ack the interrupts */ | |
667 | ||
668 | if(result & TDR_LNK_OK) | |
669 | ; | |
670 | else if(result & TDR_XCVR_PRB) | |
671 | printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name); | |
672 | else if(result & TDR_ET_OPN) | |
673 | printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK); | |
674 | else if(result & TDR_ET_SRT) | |
675 | { | |
676 | if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */ | |
677 | printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK); | |
678 | } | |
679 | else | |
680 | printk("%s: TDR: Unknown status %04x\n",dev->name,result); | |
681 | } | |
682 | ||
683 | /* | |
684 | * Multicast setup | |
685 | */ | |
686 | if(num_addrs && !(dev->flags & IFF_PROMISC) ) | |
687 | { | |
688 | mc_cmd = (struct mcsetup_cmd_struct *) ptr; | |
689 | mc_cmd->cmd_status = 0; | |
690 | mc_cmd->cmd_cmd = CMD_MCSETUP | CMD_LAST; | |
691 | mc_cmd->cmd_link = 0xffff; | |
692 | mc_cmd->mc_cnt = num_addrs * 6; | |
693 | ||
694 | for(i=0;i<num_addrs;i++,dmi=dmi->next) | |
695 | memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6); | |
696 | ||
697 | p->scb->cbl_offset = make16(mc_cmd); | |
698 | p->scb->cmd_cuc = CUC_START; | |
699 | ni_attn586(); | |
700 | ||
701 | WAIT_4_STAT_COMPL(mc_cmd); | |
702 | ||
703 | if( (mc_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) ) | |
704 | printk("%s: Can't apply multicast-address-list.\n",dev->name); | |
705 | } | |
706 | ||
707 | /* | |
708 | * alloc nop/xmit-cmds | |
709 | */ | |
710 | #if (NUM_XMIT_BUFFS == 1) | |
711 | for(i=0;i<2;i++) | |
712 | { | |
713 | p->nop_cmds[i] = (struct nop_cmd_struct *)ptr; | |
714 | p->nop_cmds[i]->cmd_cmd = CMD_NOP; | |
715 | p->nop_cmds[i]->cmd_status = 0; | |
716 | p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i])); | |
717 | ptr = (char *) ptr + sizeof(struct nop_cmd_struct); | |
718 | } | |
719 | #else | |
720 | for(i=0;i<NUM_XMIT_BUFFS;i++) | |
721 | { | |
722 | p->nop_cmds[i] = (struct nop_cmd_struct *)ptr; | |
723 | p->nop_cmds[i]->cmd_cmd = CMD_NOP; | |
724 | p->nop_cmds[i]->cmd_status = 0; | |
725 | p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i])); | |
726 | ptr = (char *) ptr + sizeof(struct nop_cmd_struct); | |
727 | } | |
728 | #endif | |
729 | ||
730 | ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */ | |
731 | ||
732 | /* | |
733 | * alloc xmit-buffs / init xmit_cmds | |
734 | */ | |
735 | for(i=0;i<NUM_XMIT_BUFFS;i++) | |
736 | { | |
737 | p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/ | |
738 | ptr = (char *) ptr + sizeof(struct transmit_cmd_struct); | |
739 | p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */ | |
740 | ptr = (char *) ptr + XMIT_BUFF_SIZE; | |
741 | p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */ | |
742 | ptr = (char *) ptr + sizeof(struct tbd_struct); | |
743 | if((void *)ptr > (void *)p->iscp) | |
744 | { | |
745 | printk("%s: not enough shared-mem for your configuration!\n",dev->name); | |
746 | return 1; | |
747 | } | |
748 | memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct)); | |
749 | memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct)); | |
750 | p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]); | |
751 | p->xmit_cmds[i]->cmd_status = STAT_COMPL; | |
752 | p->xmit_cmds[i]->cmd_cmd = CMD_XMIT | CMD_INT; | |
753 | p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i])); | |
754 | p->xmit_buffs[i]->next = 0xffff; | |
755 | p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i])); | |
756 | } | |
757 | ||
758 | p->xmit_count = 0; | |
759 | p->xmit_last = 0; | |
760 | #ifndef NO_NOPCOMMANDS | |
761 | p->nop_point = 0; | |
762 | #endif | |
763 | ||
764 | /* | |
765 | * 'start transmitter' | |
766 | */ | |
767 | #ifndef NO_NOPCOMMANDS | |
768 | p->scb->cbl_offset = make16(p->nop_cmds[0]); | |
769 | p->scb->cmd_cuc = CUC_START; | |
770 | ni_attn586(); | |
771 | WAIT_4_SCB_CMD(); | |
772 | #else | |
773 | p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]); | |
774 | p->xmit_cmds[0]->cmd_cmd = CMD_XMIT | CMD_SUSPEND | CMD_INT; | |
775 | #endif | |
776 | ||
777 | /* | |
778 | * ack. interrupts | |
779 | */ | |
780 | p->scb->cmd_cuc = p->scb->cus & STAT_MASK; | |
781 | ni_attn586(); | |
782 | DELAY_16(); | |
783 | ||
784 | ni_enaint(); | |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
789 | /****************************************************** | |
790 | * This is a helper routine for ni52_rnr_int() and init586(). | |
791 | * It sets up the Receive Frame Area (RFA). | |
792 | */ | |
793 | ||
794 | static void *alloc_rfa(struct net_device *dev,void *ptr) | |
795 | { | |
796 | volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr; | |
797 | volatile struct rbd_struct *rbd; | |
798 | int i; | |
799 | struct priv *p = (struct priv *) dev->priv; | |
800 | ||
801 | memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd)); | |
802 | p->rfd_first = rfd; | |
803 | ||
804 | for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) { | |
805 | rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) ); | |
806 | rfd[i].rbd_offset = 0xffff; | |
807 | } | |
808 | rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */ | |
809 | ||
810 | ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) ); | |
811 | ||
812 | rbd = (struct rbd_struct *) ptr; | |
813 | ptr = (void *) (rbd + p->num_recv_buffs); | |
814 | ||
815 | /* clr descriptors */ | |
816 | memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs)); | |
817 | ||
818 | for(i=0;i<p->num_recv_buffs;i++) | |
819 | { | |
820 | rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs)); | |
821 | rbd[i].size = RECV_BUFF_SIZE; | |
822 | rbd[i].buffer = make24(ptr); | |
823 | ptr = (char *) ptr + RECV_BUFF_SIZE; | |
824 | } | |
825 | ||
826 | p->rfd_top = p->rfd_first; | |
827 | p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd); | |
828 | ||
829 | p->scb->rfa_offset = make16(p->rfd_first); | |
830 | p->rfd_first->rbd_offset = make16(rbd); | |
831 | ||
832 | return ptr; | |
833 | } | |
834 | ||
835 | ||
836 | /************************************************** | |
837 | * Interrupt Handler ... | |
838 | */ | |
839 | ||
7d12e780 | 840 | static irqreturn_t ni52_interrupt(int irq,void *dev_id) |
1da177e4 LT |
841 | { |
842 | struct net_device *dev = dev_id; | |
843 | unsigned short stat; | |
844 | int cnt=0; | |
845 | struct priv *p; | |
846 | ||
847 | if (!dev) { | |
848 | printk ("ni5210-interrupt: irq %d for unknown device.\n",irq); | |
849 | return IRQ_NONE; | |
850 | } | |
851 | p = (struct priv *) dev->priv; | |
852 | ||
853 | if(debuglevel > 1) | |
854 | printk("I"); | |
855 | ||
856 | WAIT_4_SCB_CMD(); /* wait for last command */ | |
857 | ||
858 | while((stat=p->scb->cus & STAT_MASK)) | |
859 | { | |
860 | p->scb->cmd_cuc = stat; | |
861 | ni_attn586(); | |
862 | ||
863 | if(stat & STAT_FR) /* received a frame */ | |
864 | ni52_rcv_int(dev); | |
865 | ||
866 | if(stat & STAT_RNR) /* RU went 'not ready' */ | |
867 | { | |
868 | printk("(R)"); | |
869 | if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */ | |
870 | { | |
871 | WAIT_4_SCB_CMD(); | |
872 | p->scb->cmd_ruc = RUC_RESUME; | |
873 | ni_attn586(); | |
874 | WAIT_4_SCB_CMD_RUC(); | |
875 | } | |
876 | else | |
877 | { | |
878 | printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus); | |
879 | ni52_rnr_int(dev); | |
880 | } | |
881 | } | |
882 | ||
883 | if(stat & STAT_CX) /* command with I-bit set complete */ | |
884 | ni52_xmt_int(dev); | |
885 | ||
886 | #ifndef NO_NOPCOMMANDS | |
887 | if(stat & STAT_CNA) /* CU went 'not ready' */ | |
888 | { | |
889 | if(netif_running(dev)) | |
890 | printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus); | |
891 | } | |
892 | #endif | |
893 | ||
894 | if(debuglevel > 1) | |
895 | printk("%d",cnt++); | |
896 | ||
897 | WAIT_4_SCB_CMD(); /* wait for ack. (ni52_xmt_int can be faster than ack!!) */ | |
898 | if(p->scb->cmd_cuc) /* timed out? */ | |
899 | { | |
900 | printk("%s: Acknowledge timed out.\n",dev->name); | |
901 | ni_disint(); | |
902 | break; | |
903 | } | |
904 | } | |
905 | ||
906 | if(debuglevel > 1) | |
907 | printk("i"); | |
908 | return IRQ_HANDLED; | |
909 | } | |
910 | ||
911 | /******************************************************* | |
912 | * receive-interrupt | |
913 | */ | |
914 | ||
915 | static void ni52_rcv_int(struct net_device *dev) | |
916 | { | |
917 | int status,cnt=0; | |
918 | unsigned short totlen; | |
919 | struct sk_buff *skb; | |
920 | struct rbd_struct *rbd; | |
921 | struct priv *p = (struct priv *) dev->priv; | |
922 | ||
923 | if(debuglevel > 0) | |
924 | printk("R"); | |
925 | ||
926 | for(;(status = p->rfd_top->stat_high) & RFD_COMPL;) | |
927 | { | |
928 | rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset); | |
929 | ||
930 | if(status & RFD_OK) /* frame received without error? */ | |
931 | { | |
932 | if( (totlen = rbd->status) & RBD_LAST) /* the first and the last buffer? */ | |
933 | { | |
934 | totlen &= RBD_MASK; /* length of this frame */ | |
935 | rbd->status = 0; | |
936 | skb = (struct sk_buff *) dev_alloc_skb(totlen+2); | |
937 | if(skb != NULL) | |
938 | { | |
939 | skb->dev = dev; | |
940 | skb_reserve(skb,2); | |
941 | skb_put(skb,totlen); | |
942 | eth_copy_and_sum(skb,(char *) p->base+(unsigned long) rbd->buffer,totlen,0); | |
943 | skb->protocol=eth_type_trans(skb,dev); | |
944 | netif_rx(skb); | |
945 | dev->last_rx = jiffies; | |
946 | p->stats.rx_packets++; | |
947 | p->stats.rx_bytes += totlen; | |
948 | } | |
949 | else | |
950 | p->stats.rx_dropped++; | |
951 | } | |
952 | else | |
953 | { | |
954 | int rstat; | |
955 | /* free all RBD's until RBD_LAST is set */ | |
956 | totlen = 0; | |
957 | while(!((rstat=rbd->status) & RBD_LAST)) | |
958 | { | |
959 | totlen += rstat & RBD_MASK; | |
960 | if(!rstat) | |
961 | { | |
962 | printk("%s: Whoops .. no end mark in RBD list\n",dev->name); | |
963 | break; | |
964 | } | |
965 | rbd->status = 0; | |
966 | rbd = (struct rbd_struct *) make32(rbd->next); | |
967 | } | |
968 | totlen += rstat & RBD_MASK; | |
969 | rbd->status = 0; | |
970 | printk("%s: received oversized frame! length: %d\n",dev->name,totlen); | |
971 | p->stats.rx_dropped++; | |
972 | } | |
973 | } | |
974 | else /* frame !(ok), only with 'save-bad-frames' */ | |
975 | { | |
976 | printk("%s: oops! rfd-error-status: %04x\n",dev->name,status); | |
977 | p->stats.rx_errors++; | |
978 | } | |
979 | p->rfd_top->stat_high = 0; | |
980 | p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */ | |
981 | p->rfd_top->rbd_offset = 0xffff; | |
982 | p->rfd_last->last = 0; /* delete RFD_SUSP */ | |
983 | p->rfd_last = p->rfd_top; | |
984 | p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */ | |
985 | p->scb->rfa_offset = make16(p->rfd_top); | |
986 | ||
987 | if(debuglevel > 0) | |
988 | printk("%d",cnt++); | |
989 | } | |
990 | ||
991 | if(automatic_resume) | |
992 | { | |
993 | WAIT_4_SCB_CMD(); | |
994 | p->scb->cmd_ruc = RUC_RESUME; | |
995 | ni_attn586(); | |
996 | WAIT_4_SCB_CMD_RUC(); | |
997 | } | |
998 | ||
999 | #ifdef WAIT_4_BUSY | |
1000 | { | |
1001 | int i; | |
1002 | for(i=0;i<1024;i++) | |
1003 | { | |
1004 | if(p->rfd_top->status) | |
1005 | break; | |
1006 | DELAY_16(); | |
1007 | if(i == 1023) | |
1008 | printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name); | |
1009 | } | |
1010 | } | |
1011 | #endif | |
1012 | ||
1013 | #if 0 | |
1014 | if(!at_least_one) | |
1015 | { | |
1016 | int i; | |
1017 | volatile struct rfd_struct *rfds=p->rfd_top; | |
1018 | volatile struct rbd_struct *rbds; | |
1019 | printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least); | |
1020 | for(i=0;i< (p->num_recv_buffs+4);i++) | |
1021 | { | |
1022 | rbds = (struct rbd_struct *) make32(rfds->rbd_offset); | |
1023 | printk("%04x:%04x ",rfds->status,rbds->status); | |
1024 | rfds = (struct rfd_struct *) make32(rfds->next); | |
1025 | } | |
1026 | printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status); | |
1027 | printk("\nerrs: %04x %04x rus: %02x, cus: %02x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->rus,(int)p->scb->cus); | |
1028 | } | |
1029 | old_at_least = at_least_one; | |
1030 | #endif | |
1031 | ||
1032 | if(debuglevel > 0) | |
1033 | printk("r"); | |
1034 | } | |
1035 | ||
1036 | /********************************************************** | |
1037 | * handle 'Receiver went not ready'. | |
1038 | */ | |
1039 | ||
1040 | static void ni52_rnr_int(struct net_device *dev) | |
1041 | { | |
1042 | struct priv *p = (struct priv *) dev->priv; | |
1043 | ||
1044 | p->stats.rx_errors++; | |
1045 | ||
1046 | WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */ | |
1047 | p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */ | |
1048 | ni_attn586(); | |
1049 | WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */ | |
1050 | ||
1051 | alloc_rfa(dev,(char *)p->rfd_first); | |
1052 | /* maybe add a check here, before restarting the RU */ | |
1053 | startrecv586(dev); /* restart RU */ | |
1054 | ||
1055 | printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus); | |
1056 | ||
1057 | } | |
1058 | ||
1059 | /********************************************************** | |
1060 | * handle xmit - interrupt | |
1061 | */ | |
1062 | ||
1063 | static void ni52_xmt_int(struct net_device *dev) | |
1064 | { | |
1065 | int status; | |
1066 | struct priv *p = (struct priv *) dev->priv; | |
1067 | ||
1068 | if(debuglevel > 0) | |
1069 | printk("X"); | |
1070 | ||
1071 | status = p->xmit_cmds[p->xmit_last]->cmd_status; | |
1072 | if(!(status & STAT_COMPL)) | |
1073 | printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name); | |
1074 | ||
1075 | if(status & STAT_OK) | |
1076 | { | |
1077 | p->stats.tx_packets++; | |
1078 | p->stats.collisions += (status & TCMD_MAXCOLLMASK); | |
1079 | } | |
1080 | else | |
1081 | { | |
1082 | p->stats.tx_errors++; | |
1083 | if(status & TCMD_LATECOLL) { | |
1084 | printk("%s: late collision detected.\n",dev->name); | |
1085 | p->stats.collisions++; | |
1086 | } | |
1087 | else if(status & TCMD_NOCARRIER) { | |
1088 | p->stats.tx_carrier_errors++; | |
1089 | printk("%s: no carrier detected.\n",dev->name); | |
1090 | } | |
1091 | else if(status & TCMD_LOSTCTS) | |
1092 | printk("%s: loss of CTS detected.\n",dev->name); | |
1093 | else if(status & TCMD_UNDERRUN) { | |
1094 | p->stats.tx_fifo_errors++; | |
1095 | printk("%s: DMA underrun detected.\n",dev->name); | |
1096 | } | |
1097 | else if(status & TCMD_MAXCOLL) { | |
1098 | printk("%s: Max. collisions exceeded.\n",dev->name); | |
1099 | p->stats.collisions += 16; | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | #if (NUM_XMIT_BUFFS > 1) | |
1104 | if( (++p->xmit_last) == NUM_XMIT_BUFFS) | |
1105 | p->xmit_last = 0; | |
1106 | #endif | |
1107 | netif_wake_queue(dev); | |
1108 | } | |
1109 | ||
1110 | /*********************************************************** | |
1111 | * (re)start the receiver | |
1112 | */ | |
1113 | ||
1114 | static void startrecv586(struct net_device *dev) | |
1115 | { | |
1116 | struct priv *p = (struct priv *) dev->priv; | |
1117 | ||
1118 | WAIT_4_SCB_CMD(); | |
1119 | WAIT_4_SCB_CMD_RUC(); | |
1120 | p->scb->rfa_offset = make16(p->rfd_first); | |
1121 | p->scb->cmd_ruc = RUC_START; | |
1122 | ni_attn586(); /* start cmd. */ | |
1123 | WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */ | |
1124 | } | |
1125 | ||
1126 | static void ni52_timeout(struct net_device *dev) | |
1127 | { | |
1128 | struct priv *p = (struct priv *) dev->priv; | |
1129 | #ifndef NO_NOPCOMMANDS | |
1130 | if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */ | |
1131 | { | |
1132 | netif_wake_queue(dev); | |
1133 | #ifdef DEBUG | |
1134 | printk("%s: strange ... timeout with CU active?!?\n",dev->name); | |
1135 | printk("%s: X0: %04x N0: %04x N1: %04x %d\n",dev->name,(int)p->xmit_cmds[0]->cmd_status,(int)p->nop_cmds[0]->cmd_status,(int)p->nop_cmds[1]->cmd_status,(int)p->nop_point); | |
1136 | #endif | |
1137 | p->scb->cmd_cuc = CUC_ABORT; | |
1138 | ni_attn586(); | |
1139 | WAIT_4_SCB_CMD(); | |
1140 | p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]); | |
1141 | p->scb->cmd_cuc = CUC_START; | |
1142 | ni_attn586(); | |
1143 | WAIT_4_SCB_CMD(); | |
1144 | dev->trans_start = jiffies; | |
1145 | return 0; | |
1146 | } | |
1147 | #endif | |
1148 | { | |
1149 | #ifdef DEBUG | |
1150 | printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus); | |
1151 | printk("%s: command-stats: %04x %04x\n",dev->name,p->xmit_cmds[0]->cmd_status,p->xmit_cmds[1]->cmd_status); | |
1152 | printk("%s: check, whether you set the right interrupt number!\n",dev->name); | |
1153 | #endif | |
1154 | ni52_close(dev); | |
1155 | ni52_open(dev); | |
1156 | } | |
1157 | dev->trans_start = jiffies; | |
1158 | } | |
1159 | ||
1160 | /****************************************************** | |
1161 | * send frame | |
1162 | */ | |
1163 | ||
1164 | static int ni52_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1165 | { | |
1166 | int len,i; | |
1167 | #ifndef NO_NOPCOMMANDS | |
1168 | int next_nop; | |
1169 | #endif | |
1170 | struct priv *p = (struct priv *) dev->priv; | |
1171 | ||
1172 | if(skb->len > XMIT_BUFF_SIZE) | |
1173 | { | |
1174 | printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len); | |
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | netif_stop_queue(dev); | |
1179 | ||
1180 | #if(NUM_XMIT_BUFFS > 1) | |
1181 | if(test_and_set_bit(0,(void *) &p->lock)) { | |
1182 | printk("%s: Queue was locked\n",dev->name); | |
1183 | return 1; | |
1184 | } | |
1185 | else | |
1186 | #endif | |
1187 | { | |
1188 | memcpy((char *)p->xmit_cbuffs[p->xmit_count],(char *)(skb->data),skb->len); | |
1189 | len = skb->len; | |
1190 | if (len < ETH_ZLEN) { | |
1191 | len = ETH_ZLEN; | |
1192 | memset((char *)p->xmit_cbuffs[p->xmit_count]+skb->len, 0, len - skb->len); | |
1193 | } | |
1194 | ||
1195 | #if (NUM_XMIT_BUFFS == 1) | |
1196 | # ifdef NO_NOPCOMMANDS | |
1197 | ||
1198 | #ifdef DEBUG | |
1199 | if(p->scb->cus & CU_ACTIVE) | |
1200 | { | |
1201 | printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name); | |
1202 | printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,p->xmit_cmds[0]->cmd_status); | |
1203 | } | |
1204 | #endif | |
1205 | ||
1206 | p->xmit_buffs[0]->size = TBD_LAST | len; | |
1207 | for(i=0;i<16;i++) | |
1208 | { | |
1209 | p->xmit_cmds[0]->cmd_status = 0; | |
1210 | WAIT_4_SCB_CMD(); | |
1211 | if( (p->scb->cus & CU_STATUS) == CU_SUSPEND) | |
1212 | p->scb->cmd_cuc = CUC_RESUME; | |
1213 | else | |
1214 | { | |
1215 | p->scb->cbl_offset = make16(p->xmit_cmds[0]); | |
1216 | p->scb->cmd_cuc = CUC_START; | |
1217 | } | |
1218 | ||
1219 | ni_attn586(); | |
1220 | dev->trans_start = jiffies; | |
1221 | if(!i) | |
1222 | dev_kfree_skb(skb); | |
1223 | WAIT_4_SCB_CMD(); | |
1224 | if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */ | |
1225 | break; | |
1226 | if(p->xmit_cmds[0]->cmd_status) | |
1227 | break; | |
1228 | if(i==15) | |
1229 | printk("%s: Can't start transmit-command.\n",dev->name); | |
1230 | } | |
1231 | # else | |
1232 | next_nop = (p->nop_point + 1) & 0x1; | |
1233 | p->xmit_buffs[0]->size = TBD_LAST | len; | |
1234 | ||
1235 | p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link | |
1236 | = make16((p->nop_cmds[next_nop])); | |
1237 | p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0; | |
1238 | ||
1239 | p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0])); | |
1240 | dev->trans_start = jiffies; | |
1241 | p->nop_point = next_nop; | |
1242 | dev_kfree_skb(skb); | |
1243 | # endif | |
1244 | #else | |
1245 | p->xmit_buffs[p->xmit_count]->size = TBD_LAST | len; | |
1246 | if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS ) | |
1247 | next_nop = 0; | |
1248 | ||
1249 | p->xmit_cmds[p->xmit_count]->cmd_status = 0; | |
1250 | /* linkpointer of xmit-command already points to next nop cmd */ | |
1251 | p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop])); | |
1252 | p->nop_cmds[next_nop]->cmd_status = 0; | |
1253 | ||
1254 | p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count])); | |
1255 | dev->trans_start = jiffies; | |
1256 | p->xmit_count = next_nop; | |
1257 | ||
1258 | { | |
1259 | unsigned long flags; | |
1260 | save_flags(flags); | |
1261 | cli(); | |
1262 | if(p->xmit_count != p->xmit_last) | |
1263 | netif_wake_queue(dev); | |
1264 | p->lock = 0; | |
1265 | restore_flags(flags); | |
1266 | } | |
1267 | dev_kfree_skb(skb); | |
1268 | #endif | |
1269 | } | |
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | /******************************************* | |
1274 | * Someone wanna have the statistics | |
1275 | */ | |
1276 | ||
1277 | static struct net_device_stats *ni52_get_stats(struct net_device *dev) | |
1278 | { | |
1279 | struct priv *p = (struct priv *) dev->priv; | |
1280 | unsigned short crc,aln,rsc,ovrn; | |
1281 | ||
1282 | crc = p->scb->crc_errs; /* get error-statistic from the ni82586 */ | |
1283 | p->scb->crc_errs = 0; | |
1284 | aln = p->scb->aln_errs; | |
1285 | p->scb->aln_errs = 0; | |
1286 | rsc = p->scb->rsc_errs; | |
1287 | p->scb->rsc_errs = 0; | |
1288 | ovrn = p->scb->ovrn_errs; | |
1289 | p->scb->ovrn_errs = 0; | |
1290 | ||
1291 | p->stats.rx_crc_errors += crc; | |
1292 | p->stats.rx_fifo_errors += ovrn; | |
1293 | p->stats.rx_frame_errors += aln; | |
1294 | p->stats.rx_dropped += rsc; | |
1295 | ||
1296 | return &p->stats; | |
1297 | } | |
1298 | ||
1299 | /******************************************************** | |
1300 | * Set MC list .. | |
1301 | */ | |
1302 | ||
1303 | static void set_multicast_list(struct net_device *dev) | |
1304 | { | |
1305 | netif_stop_queue(dev); | |
1306 | ni_disint(); | |
1307 | alloc586(dev); | |
1308 | init586(dev); | |
1309 | startrecv586(dev); | |
1310 | ni_enaint(); | |
1311 | netif_wake_queue(dev); | |
1312 | } | |
1313 | ||
1314 | #ifdef MODULE | |
1315 | static struct net_device *dev_ni52; | |
1316 | ||
1317 | module_param(io, int, 0); | |
1318 | module_param(irq, int, 0); | |
1319 | module_param(memstart, long, 0); | |
1320 | module_param(memend, long, 0); | |
1321 | MODULE_PARM_DESC(io, "NI5210 I/O base address,required"); | |
1322 | MODULE_PARM_DESC(irq, "NI5210 IRQ number,required"); | |
1323 | MODULE_PARM_DESC(memstart, "NI5210 memory base address,required"); | |
1324 | MODULE_PARM_DESC(memend, "NI5210 memory end address,required"); | |
1325 | ||
19a8664d | 1326 | int __init init_module(void) |
1da177e4 LT |
1327 | { |
1328 | if(io <= 0x0 || !memend || !memstart || irq < 2) { | |
1329 | printk("ni52: Autoprobing not allowed for modules.\nni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n"); | |
1330 | return -ENODEV; | |
1331 | } | |
1332 | dev_ni52 = ni52_probe(-1); | |
1333 | if (IS_ERR(dev_ni52)) | |
1334 | return PTR_ERR(dev_ni52); | |
1335 | return 0; | |
1336 | } | |
1337 | ||
afc8eb46 | 1338 | void __exit cleanup_module(void) |
1da177e4 LT |
1339 | { |
1340 | unregister_netdev(dev_ni52); | |
1341 | release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE); | |
1342 | free_netdev(dev_ni52); | |
1343 | } | |
1344 | #endif /* MODULE */ | |
1345 | ||
1346 | #if 0 | |
1347 | /* | |
1348 | * DUMP .. we expect a not running CMD unit and enough space | |
1349 | */ | |
1350 | void ni52_dump(struct net_device *dev,void *ptr) | |
1351 | { | |
1352 | struct priv *p = (struct priv *) dev->priv; | |
1353 | struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr; | |
1354 | int i; | |
1355 | ||
1356 | p->scb->cmd_cuc = CUC_ABORT; | |
1357 | ni_attn586(); | |
1358 | WAIT_4_SCB_CMD(); | |
1359 | WAIT_4_SCB_CMD_RUC(); | |
1360 | ||
1361 | dump_cmd->cmd_status = 0; | |
1362 | dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST; | |
1363 | dump_cmd->dump_offset = make16((dump_cmd + 1)); | |
1364 | dump_cmd->cmd_link = 0xffff; | |
1365 | ||
1366 | p->scb->cbl_offset = make16(dump_cmd); | |
1367 | p->scb->cmd_cuc = CUC_START; | |
1368 | ni_attn586(); | |
1369 | WAIT_4_STAT_COMPL(dump_cmd); | |
1370 | ||
1371 | if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) ) | |
1372 | printk("%s: Can't get dump information.\n",dev->name); | |
1373 | ||
1374 | for(i=0;i<170;i++) { | |
1375 | printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]); | |
1376 | if(i % 24 == 23) | |
1377 | printk("\n"); | |
1378 | } | |
1379 | printk("\n"); | |
1380 | } | |
1381 | #endif | |
1382 | MODULE_LICENSE("GPL"); | |
1383 | ||
1384 | /* | |
1385 | * END: linux/drivers/net/ni52.c | |
1386 | */ |