Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ni6510 (am7990 'lance' chip) driver for Linux-net-3 | |
3 | * BETAcode v0.71 (96/09/29) for 2.0.0 (or later) | |
4 | * copyrights (c) 1994,1995,1996 by M.Hipp | |
5 | * | |
6 | * This driver can handle the old ni6510 board and the newer ni6510 | |
7 | * EtherBlaster. (probably it also works with every full NE2100 | |
8 | * compatible card) | |
9 | * | |
10 | * To compile as module, type: | |
11 | * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni65.c | |
12 | * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7 | |
13 | * | |
14 | * This is an extension to the Linux operating system, and is covered by the | |
15 | * same GNU General Public License that covers the Linux-kernel. | |
16 | * | |
17 | * comments/bugs/suggestions can be sent to: | |
18 | * Michael Hipp | |
19 | * email: hippm@informatik.uni-tuebingen.de | |
20 | * | |
21 | * sources: | |
22 | * some things are from the 'ni6510-packet-driver for dos by Russ Nelson' | |
23 | * and from the original drivers by D.Becker | |
24 | * | |
25 | * known problems: | |
26 | * - on some PCI boards (including my own) the card/board/ISA-bridge has | |
27 | * problems with bus master DMA. This results in lotsa overruns. | |
28 | * It may help to '#define RCV_PARANOIA_CHECK' or try to #undef | |
29 | * the XMT and RCV_VIA_SKB option .. this reduces driver performance. | |
30 | * Or just play with your BIOS options to optimize ISA-DMA access. | |
31 | * Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE | |
32 | * defines -> please report me your experience then | |
33 | * - Harald reported for ASUS SP3G mainboards, that you should use | |
34 | * the 'optimal settings' from the user's manual on page 3-12! | |
35 | * | |
36 | * credits: | |
37 | * thanx to Jason Sullivan for sending me a ni6510 card! | |
38 | * lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig | |
39 | * | |
40 | * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB) | |
41 | * average: FTP -> 8384421 bytes received in 8.5 seconds | |
42 | * (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS) | |
43 | * peak: FTP -> 8384421 bytes received in 7.5 seconds | |
44 | * (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS) | |
45 | */ | |
46 | ||
47 | /* | |
48 | * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK) | |
49 | * 96.Sept.29: virt_to_bus stuff added for new memory modell | |
50 | * 96.April.29: Added Harald Koenig's Patches (MH) | |
51 | * 96.April.13: enhanced error handling .. more tests (MH) | |
52 | * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH) | |
53 | * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH) | |
54 | * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH) | |
55 | * hopefully no more 16MB limit | |
56 | * | |
57 | * 95.Nov.18: multicast tweaked (AC). | |
58 | * | |
59 | * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH) | |
60 | * | |
61 | * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff (MH) | |
62 | */ | |
63 | ||
64 | #include <linux/kernel.h> | |
65 | #include <linux/string.h> | |
66 | #include <linux/errno.h> | |
67 | #include <linux/ioport.h> | |
68 | #include <linux/slab.h> | |
69 | #include <linux/interrupt.h> | |
70 | #include <linux/delay.h> | |
71 | #include <linux/init.h> | |
72 | #include <linux/netdevice.h> | |
73 | #include <linux/etherdevice.h> | |
74 | #include <linux/skbuff.h> | |
75 | #include <linux/module.h> | |
76 | #include <linux/bitops.h> | |
77 | ||
78 | #include <asm/io.h> | |
79 | #include <asm/dma.h> | |
80 | ||
81 | #include "ni65.h" | |
82 | ||
83 | /* | |
84 | * the current setting allows an acceptable performance | |
85 | * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in | |
86 | * the header of this file | |
87 | * 'invert' the defines for max. performance. This may cause DMA problems | |
88 | * on some boards (e.g on my ASUS SP3G) | |
89 | */ | |
90 | #undef XMT_VIA_SKB | |
91 | #undef RCV_VIA_SKB | |
92 | #define RCV_PARANOIA_CHECK | |
93 | ||
94 | #define MID_PERFORMANCE | |
95 | ||
96 | #if defined( LOW_PERFORMANCE ) | |
97 | static int isa0=7,isa1=7,csr80=0x0c10; | |
98 | #elif defined( MID_PERFORMANCE ) | |
99 | static int isa0=5,isa1=5,csr80=0x2810; | |
100 | #else /* high performance */ | |
101 | static int isa0=4,isa1=4,csr80=0x0017; | |
102 | #endif | |
103 | ||
104 | /* | |
105 | * a few card/vendor specific defines | |
106 | */ | |
107 | #define NI65_ID0 0x00 | |
108 | #define NI65_ID1 0x55 | |
109 | #define NI65_EB_ID0 0x52 | |
110 | #define NI65_EB_ID1 0x44 | |
111 | #define NE2100_ID0 0x57 | |
112 | #define NE2100_ID1 0x57 | |
113 | ||
114 | #define PORT p->cmdr_addr | |
115 | ||
116 | /* | |
117 | * buffer configuration | |
118 | */ | |
119 | #if 1 | |
120 | #define RMDNUM 16 | |
121 | #define RMDNUMMASK 0x80000000 | |
122 | #else | |
123 | #define RMDNUM 8 | |
124 | #define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */ | |
125 | #endif | |
126 | ||
127 | #if 0 | |
128 | #define TMDNUM 1 | |
129 | #define TMDNUMMASK 0x00000000 | |
130 | #else | |
131 | #define TMDNUM 4 | |
132 | #define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */ | |
133 | #endif | |
134 | ||
135 | /* slightly oversized */ | |
136 | #define R_BUF_SIZE 1544 | |
137 | #define T_BUF_SIZE 1544 | |
138 | ||
139 | /* | |
140 | * lance register defines | |
141 | */ | |
142 | #define L_DATAREG 0x00 | |
143 | #define L_ADDRREG 0x02 | |
144 | #define L_RESET 0x04 | |
145 | #define L_CONFIG 0x05 | |
146 | #define L_BUSIF 0x06 | |
147 | ||
148 | /* | |
149 | * to access the lance/am7990-regs, you have to write | |
150 | * reg-number into L_ADDRREG, then you can access it using L_DATAREG | |
151 | */ | |
152 | #define CSR0 0x00 | |
153 | #define CSR1 0x01 | |
154 | #define CSR2 0x02 | |
155 | #define CSR3 0x03 | |
156 | ||
157 | #define INIT_RING_BEFORE_START 0x1 | |
158 | #define FULL_RESET_ON_ERROR 0x2 | |
159 | ||
160 | #if 0 | |
161 | #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \ | |
162 | outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} | |
163 | #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\ | |
164 | inw(PORT+L_DATAREG)) | |
165 | #if 0 | |
166 | #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} | |
167 | #else | |
168 | #define writedatareg(val) { writereg(val,CSR0); } | |
169 | #endif | |
170 | #else | |
171 | #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);} | |
172 | #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG)) | |
173 | #define writedatareg(val) { writereg(val,CSR0); } | |
174 | #endif | |
175 | ||
176 | static unsigned char ni_vendor[] = { 0x02,0x07,0x01 }; | |
177 | ||
178 | static struct card { | |
179 | unsigned char id0,id1; | |
180 | short id_offset; | |
181 | short total_size; | |
182 | short cmd_offset; | |
183 | short addr_offset; | |
184 | unsigned char *vendor_id; | |
185 | char *cardname; | |
64b33619 | 186 | unsigned long config; |
1da177e4 LT |
187 | } cards[] = { |
188 | { | |
189 | .id0 = NI65_ID0, | |
190 | .id1 = NI65_ID1, | |
191 | .id_offset = 0x0e, | |
192 | .total_size = 0x10, | |
193 | .cmd_offset = 0x0, | |
194 | .addr_offset = 0x8, | |
195 | .vendor_id = ni_vendor, | |
196 | .cardname = "ni6510", | |
197 | .config = 0x1, | |
198 | }, | |
199 | { | |
200 | .id0 = NI65_EB_ID0, | |
201 | .id1 = NI65_EB_ID1, | |
202 | .id_offset = 0x0e, | |
203 | .total_size = 0x18, | |
204 | .cmd_offset = 0x10, | |
205 | .addr_offset = 0x0, | |
206 | .vendor_id = ni_vendor, | |
207 | .cardname = "ni6510 EtherBlaster", | |
208 | .config = 0x2, | |
209 | }, | |
210 | { | |
211 | .id0 = NE2100_ID0, | |
212 | .id1 = NE2100_ID1, | |
213 | .id_offset = 0x0e, | |
214 | .total_size = 0x18, | |
215 | .cmd_offset = 0x10, | |
216 | .addr_offset = 0x0, | |
217 | .vendor_id = NULL, | |
218 | .cardname = "generic NE2100", | |
219 | .config = 0x0, | |
220 | }, | |
221 | }; | |
222 | #define NUM_CARDS 3 | |
223 | ||
224 | struct priv | |
225 | { | |
226 | struct rmd rmdhead[RMDNUM]; | |
227 | struct tmd tmdhead[TMDNUM]; | |
228 | struct init_block ib; | |
229 | int rmdnum; | |
230 | int tmdnum,tmdlast; | |
231 | #ifdef RCV_VIA_SKB | |
232 | struct sk_buff *recv_skb[RMDNUM]; | |
233 | #else | |
234 | void *recvbounce[RMDNUM]; | |
235 | #endif | |
236 | #ifdef XMT_VIA_SKB | |
237 | struct sk_buff *tmd_skb[TMDNUM]; | |
238 | #endif | |
239 | void *tmdbounce[TMDNUM]; | |
240 | int tmdbouncenum; | |
241 | int lock,xmit_queued; | |
242 | struct net_device_stats stats; | |
243 | void *self; | |
244 | int cmdr_addr; | |
245 | int cardno; | |
246 | int features; | |
247 | spinlock_t ring_lock; | |
248 | }; | |
249 | ||
250 | static int ni65_probe1(struct net_device *dev,int); | |
7d12e780 | 251 | static irqreturn_t ni65_interrupt(int irq, void * dev_id); |
1da177e4 LT |
252 | static void ni65_recv_intr(struct net_device *dev,int); |
253 | static void ni65_xmit_intr(struct net_device *dev,int); | |
254 | static int ni65_open(struct net_device *dev); | |
255 | static int ni65_lance_reinit(struct net_device *dev); | |
256 | static void ni65_init_lance(struct priv *p,unsigned char*,int,int); | |
257 | static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev); | |
258 | static void ni65_timeout(struct net_device *dev); | |
259 | static int ni65_close(struct net_device *dev); | |
260 | static int ni65_alloc_buffer(struct net_device *dev); | |
261 | static void ni65_free_buffer(struct priv *p); | |
262 | static struct net_device_stats *ni65_get_stats(struct net_device *); | |
263 | static void set_multicast_list(struct net_device *dev); | |
264 | ||
265 | static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */ | |
266 | static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */ | |
267 | ||
268 | static int debuglevel = 1; | |
269 | ||
270 | /* | |
271 | * set 'performance' registers .. we must STOP lance for that | |
272 | */ | |
273 | static void ni65_set_performance(struct priv *p) | |
274 | { | |
275 | writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */ | |
276 | ||
277 | if( !(cards[p->cardno].config & 0x02) ) | |
278 | return; | |
279 | ||
280 | outw(80,PORT+L_ADDRREG); | |
281 | if(inw(PORT+L_ADDRREG) != 80) | |
282 | return; | |
283 | ||
284 | writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */ | |
285 | outw(0,PORT+L_ADDRREG); | |
286 | outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */ | |
287 | outw(1,PORT+L_ADDRREG); | |
288 | outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns */ | |
289 | ||
290 | outw(CSR0,PORT+L_ADDRREG); /* switch back to CSR0 */ | |
291 | } | |
292 | ||
293 | /* | |
294 | * open interface (up) | |
295 | */ | |
296 | static int ni65_open(struct net_device *dev) | |
297 | { | |
298 | struct priv *p = (struct priv *) dev->priv; | |
299 | int irqval = request_irq(dev->irq, &ni65_interrupt,0, | |
300 | cards[p->cardno].cardname,dev); | |
301 | if (irqval) { | |
302 | printk(KERN_ERR "%s: unable to get IRQ %d (irqval=%d).\n", | |
303 | dev->name,dev->irq, irqval); | |
304 | return -EAGAIN; | |
305 | } | |
306 | ||
307 | if(ni65_lance_reinit(dev)) | |
308 | { | |
309 | netif_start_queue(dev); | |
310 | return 0; | |
311 | } | |
312 | else | |
313 | { | |
314 | free_irq(dev->irq,dev); | |
315 | return -EAGAIN; | |
316 | } | |
317 | } | |
318 | ||
319 | /* | |
320 | * close interface (down) | |
321 | */ | |
322 | static int ni65_close(struct net_device *dev) | |
323 | { | |
324 | struct priv *p = (struct priv *) dev->priv; | |
325 | ||
326 | netif_stop_queue(dev); | |
6aa20a22 | 327 | |
1da177e4 LT |
328 | outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */ |
329 | ||
330 | #ifdef XMT_VIA_SKB | |
331 | { | |
332 | int i; | |
333 | for(i=0;i<TMDNUM;i++) | |
334 | { | |
335 | if(p->tmd_skb[i]) { | |
336 | dev_kfree_skb(p->tmd_skb[i]); | |
337 | p->tmd_skb[i] = NULL; | |
338 | } | |
339 | } | |
340 | } | |
341 | #endif | |
342 | free_irq(dev->irq,dev); | |
343 | return 0; | |
344 | } | |
345 | ||
346 | static void cleanup_card(struct net_device *dev) | |
347 | { | |
348 | struct priv *p = (struct priv *) dev->priv; | |
349 | disable_dma(dev->dma); | |
350 | free_dma(dev->dma); | |
351 | release_region(dev->base_addr, cards[p->cardno].total_size); | |
352 | ni65_free_buffer(p); | |
353 | } | |
354 | ||
355 | /* set: io,irq,dma or set it when calling insmod */ | |
356 | static int irq; | |
357 | static int io; | |
358 | static int dma; | |
359 | ||
360 | /* | |
361 | * Probe The Card (not the lance-chip) | |
362 | */ | |
363 | struct net_device * __init ni65_probe(int unit) | |
364 | { | |
365 | struct net_device *dev = alloc_etherdev(0); | |
366 | static int ports[] = {0x360,0x300,0x320,0x340, 0}; | |
367 | int *port; | |
368 | int err = 0; | |
369 | ||
370 | if (!dev) | |
371 | return ERR_PTR(-ENOMEM); | |
372 | ||
373 | if (unit >= 0) { | |
374 | sprintf(dev->name, "eth%d", unit); | |
375 | netdev_boot_setup_check(dev); | |
376 | irq = dev->irq; | |
377 | dma = dev->dma; | |
378 | } else { | |
379 | dev->base_addr = io; | |
380 | } | |
381 | ||
382 | if (dev->base_addr > 0x1ff) { /* Check a single specified location. */ | |
383 | err = ni65_probe1(dev, dev->base_addr); | |
384 | } else if (dev->base_addr > 0) { /* Don't probe at all. */ | |
385 | err = -ENXIO; | |
386 | } else { | |
387 | for (port = ports; *port && ni65_probe1(dev, *port); port++) | |
388 | ; | |
389 | if (!*port) | |
390 | err = -ENODEV; | |
391 | } | |
392 | if (err) | |
393 | goto out; | |
394 | ||
395 | err = register_netdev(dev); | |
396 | if (err) | |
397 | goto out1; | |
398 | return dev; | |
399 | out1: | |
400 | cleanup_card(dev); | |
401 | out: | |
402 | free_netdev(dev); | |
403 | return ERR_PTR(err); | |
404 | } | |
405 | ||
406 | /* | |
407 | * this is the real card probe .. | |
408 | */ | |
409 | static int __init ni65_probe1(struct net_device *dev,int ioaddr) | |
410 | { | |
411 | int i,j; | |
412 | struct priv *p; | |
413 | unsigned long flags; | |
414 | ||
415 | dev->irq = irq; | |
416 | dev->dma = dma; | |
417 | ||
418 | for(i=0;i<NUM_CARDS;i++) { | |
419 | if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname)) | |
420 | continue; | |
421 | if(cards[i].id_offset >= 0) { | |
422 | if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 || | |
423 | inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) { | |
424 | release_region(ioaddr, cards[i].total_size); | |
425 | continue; | |
426 | } | |
427 | } | |
428 | if(cards[i].vendor_id) { | |
429 | for(j=0;j<3;j++) | |
430 | if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j]) { | |
431 | release_region(ioaddr, cards[i].total_size); | |
432 | continue; | |
433 | } | |
434 | } | |
435 | break; | |
436 | } | |
437 | if(i == NUM_CARDS) | |
438 | return -ENODEV; | |
439 | ||
440 | for(j=0;j<6;j++) | |
441 | dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j); | |
442 | ||
443 | if( (j=ni65_alloc_buffer(dev)) < 0) { | |
444 | release_region(ioaddr, cards[i].total_size); | |
445 | return j; | |
446 | } | |
447 | p = (struct priv *) dev->priv; | |
448 | p->cmdr_addr = ioaddr + cards[i].cmd_offset; | |
449 | p->cardno = i; | |
450 | spin_lock_init(&p->ring_lock); | |
451 | ||
452 | printk(KERN_INFO "%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr); | |
453 | ||
454 | outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ | |
455 | if( (j=readreg(CSR0)) != 0x4) { | |
456 | printk("failed.\n"); | |
457 | printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j); | |
458 | ni65_free_buffer(p); | |
459 | release_region(ioaddr, cards[p->cardno].total_size); | |
460 | return -EAGAIN; | |
461 | } | |
462 | ||
463 | outw(88,PORT+L_ADDRREG); | |
464 | if(inw(PORT+L_ADDRREG) == 88) { | |
465 | unsigned long v; | |
466 | v = inw(PORT+L_DATAREG); | |
467 | v <<= 16; | |
468 | outw(89,PORT+L_ADDRREG); | |
469 | v |= inw(PORT+L_DATAREG); | |
470 | printk("Version %#08lx, ",v); | |
471 | p->features = INIT_RING_BEFORE_START; | |
472 | } | |
473 | else { | |
474 | printk("ancient LANCE, "); | |
475 | p->features = 0x0; | |
476 | } | |
477 | ||
478 | if(test_bit(0,&cards[i].config)) { | |
479 | dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3]; | |
480 | dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3]; | |
481 | printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma); | |
482 | } | |
483 | else { | |
484 | if(dev->dma == 0) { | |
485 | /* 'stuck test' from lance.c */ | |
486 | long dma_channels = ((inb(DMA1_STAT_REG) >> 4) & 0x0f) | | |
487 | (inb(DMA2_STAT_REG) & 0xf0); | |
488 | for(i=1;i<5;i++) { | |
489 | int dma = dmatab[i]; | |
490 | if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510")) | |
491 | continue; | |
6aa20a22 | 492 | |
1da177e4 LT |
493 | flags=claim_dma_lock(); |
494 | disable_dma(dma); | |
495 | set_dma_mode(dma,DMA_MODE_CASCADE); | |
496 | enable_dma(dma); | |
497 | release_dma_lock(flags); | |
6aa20a22 | 498 | |
1da177e4 | 499 | ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */ |
6aa20a22 | 500 | |
1da177e4 LT |
501 | flags=claim_dma_lock(); |
502 | disable_dma(dma); | |
503 | free_dma(dma); | |
504 | release_dma_lock(flags); | |
6aa20a22 | 505 | |
1da177e4 LT |
506 | if(readreg(CSR0) & CSR0_IDON) |
507 | break; | |
508 | } | |
509 | if(i == 5) { | |
510 | printk("failed.\n"); | |
511 | printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name); | |
512 | ni65_free_buffer(p); | |
513 | release_region(ioaddr, cards[p->cardno].total_size); | |
514 | return -EAGAIN; | |
515 | } | |
516 | dev->dma = dmatab[i]; | |
517 | printk("DMA %d (autodetected), ",dev->dma); | |
518 | } | |
519 | else | |
520 | printk("DMA %d (assigned), ",dev->dma); | |
521 | ||
522 | if(dev->irq < 2) | |
523 | { | |
524 | unsigned long irq_mask; | |
525 | ||
526 | ni65_init_lance(p,dev->dev_addr,0,0); | |
527 | irq_mask = probe_irq_on(); | |
528 | writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */ | |
529 | msleep(20); | |
530 | dev->irq = probe_irq_off(irq_mask); | |
531 | if(!dev->irq) | |
532 | { | |
533 | printk("Failed to detect IRQ line!\n"); | |
534 | ni65_free_buffer(p); | |
535 | release_region(ioaddr, cards[p->cardno].total_size); | |
536 | return -EAGAIN; | |
537 | } | |
538 | printk("IRQ %d (autodetected).\n",dev->irq); | |
539 | } | |
540 | else | |
541 | printk("IRQ %d (assigned).\n",dev->irq); | |
542 | } | |
543 | ||
544 | if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0) | |
545 | { | |
546 | printk(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma); | |
547 | ni65_free_buffer(p); | |
548 | release_region(ioaddr, cards[p->cardno].total_size); | |
549 | return -EAGAIN; | |
550 | } | |
551 | ||
552 | dev->base_addr = ioaddr; | |
1da177e4 LT |
553 | dev->open = ni65_open; |
554 | dev->stop = ni65_close; | |
555 | dev->hard_start_xmit = ni65_send_packet; | |
556 | dev->tx_timeout = ni65_timeout; | |
557 | dev->watchdog_timeo = HZ/2; | |
558 | dev->get_stats = ni65_get_stats; | |
559 | dev->set_multicast_list = set_multicast_list; | |
560 | return 0; /* everything is OK */ | |
561 | } | |
562 | ||
563 | /* | |
564 | * set lance register and trigger init | |
565 | */ | |
566 | static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode) | |
567 | { | |
568 | int i; | |
569 | u32 pib; | |
570 | ||
571 | writereg(CSR0_CLRALL|CSR0_STOP,CSR0); | |
572 | ||
573 | for(i=0;i<6;i++) | |
574 | p->ib.eaddr[i] = daddr[i]; | |
575 | ||
576 | for(i=0;i<8;i++) | |
577 | p->ib.filter[i] = filter; | |
578 | p->ib.mode = mode; | |
579 | ||
580 | p->ib.trp = (u32) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK; | |
581 | p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK; | |
582 | writereg(0,CSR3); /* busmaster/no word-swap */ | |
583 | pib = (u32) isa_virt_to_bus(&p->ib); | |
584 | writereg(pib & 0xffff,CSR1); | |
585 | writereg(pib >> 16,CSR2); | |
586 | ||
587 | writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */ | |
588 | ||
589 | for(i=0;i<32;i++) | |
590 | { | |
591 | mdelay(4); | |
592 | if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) ) | |
593 | break; /* init ok ? */ | |
594 | } | |
595 | } | |
596 | ||
597 | /* | |
598 | * allocate memory area and check the 16MB border | |
599 | */ | |
600 | static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type) | |
601 | { | |
602 | struct sk_buff *skb=NULL; | |
603 | unsigned char *ptr; | |
604 | void *ret; | |
605 | ||
606 | if(type) { | |
607 | ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA); | |
608 | if(!skb) { | |
609 | printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); | |
610 | return NULL; | |
611 | } | |
1da177e4 LT |
612 | skb_reserve(skb,2+16); |
613 | skb_put(skb,R_BUF_SIZE); /* grab the whole space .. (not necessary) */ | |
614 | ptr = skb->data; | |
615 | } | |
616 | else { | |
617 | ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA); | |
618 | if(!ret) { | |
619 | printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); | |
620 | return NULL; | |
621 | } | |
622 | } | |
623 | if( (u32) virt_to_phys(ptr+size) > 0x1000000) { | |
624 | printk(KERN_WARNING "%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what); | |
625 | if(type) | |
626 | kfree_skb(skb); | |
627 | else | |
628 | kfree(ptr); | |
629 | return NULL; | |
630 | } | |
631 | return ret; | |
632 | } | |
633 | ||
634 | /* | |
635 | * allocate all memory structures .. send/recv buffers etc ... | |
636 | */ | |
637 | static int ni65_alloc_buffer(struct net_device *dev) | |
638 | { | |
639 | unsigned char *ptr; | |
640 | struct priv *p; | |
641 | int i; | |
642 | ||
643 | /* | |
644 | * we need 8-aligned memory .. | |
645 | */ | |
646 | ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0); | |
647 | if(!ptr) | |
648 | return -ENOMEM; | |
649 | ||
650 | p = dev->priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7); | |
651 | memset((char *) dev->priv,0,sizeof(struct priv)); | |
652 | p->self = ptr; | |
653 | ||
654 | for(i=0;i<TMDNUM;i++) | |
655 | { | |
656 | #ifdef XMT_VIA_SKB | |
657 | p->tmd_skb[i] = NULL; | |
658 | #endif | |
659 | p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0); | |
660 | if(!p->tmdbounce[i]) { | |
661 | ni65_free_buffer(p); | |
662 | return -ENOMEM; | |
663 | } | |
664 | } | |
665 | ||
666 | for(i=0;i<RMDNUM;i++) | |
667 | { | |
668 | #ifdef RCV_VIA_SKB | |
669 | p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1); | |
670 | if(!p->recv_skb[i]) { | |
671 | ni65_free_buffer(p); | |
672 | return -ENOMEM; | |
673 | } | |
674 | #else | |
675 | p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0); | |
676 | if(!p->recvbounce[i]) { | |
677 | ni65_free_buffer(p); | |
678 | return -ENOMEM; | |
679 | } | |
680 | #endif | |
681 | } | |
682 | ||
683 | return 0; /* everything is OK */ | |
684 | } | |
685 | ||
686 | /* | |
687 | * free buffers and private struct | |
688 | */ | |
689 | static void ni65_free_buffer(struct priv *p) | |
690 | { | |
691 | int i; | |
692 | ||
693 | if(!p) | |
694 | return; | |
695 | ||
696 | for(i=0;i<TMDNUM;i++) { | |
b4558ea9 | 697 | kfree(p->tmdbounce[i]); |
1da177e4 LT |
698 | #ifdef XMT_VIA_SKB |
699 | if(p->tmd_skb[i]) | |
700 | dev_kfree_skb(p->tmd_skb[i]); | |
701 | #endif | |
702 | } | |
703 | ||
704 | for(i=0;i<RMDNUM;i++) | |
705 | { | |
706 | #ifdef RCV_VIA_SKB | |
707 | if(p->recv_skb[i]) | |
708 | dev_kfree_skb(p->recv_skb[i]); | |
709 | #else | |
b4558ea9 | 710 | kfree(p->recvbounce[i]); |
1da177e4 LT |
711 | #endif |
712 | } | |
b4558ea9 | 713 | kfree(p->self); |
1da177e4 LT |
714 | } |
715 | ||
716 | ||
717 | /* | |
718 | * stop and (re)start lance .. e.g after an error | |
719 | */ | |
720 | static void ni65_stop_start(struct net_device *dev,struct priv *p) | |
721 | { | |
722 | int csr0 = CSR0_INEA; | |
723 | ||
724 | writedatareg(CSR0_STOP); | |
725 | ||
726 | if(debuglevel > 1) | |
727 | printk(KERN_DEBUG "ni65_stop_start\n"); | |
728 | ||
729 | if(p->features & INIT_RING_BEFORE_START) { | |
730 | int i; | |
731 | #ifdef XMT_VIA_SKB | |
732 | struct sk_buff *skb_save[TMDNUM]; | |
733 | #endif | |
734 | unsigned long buffer[TMDNUM]; | |
735 | short blen[TMDNUM]; | |
736 | ||
737 | if(p->xmit_queued) { | |
738 | while(1) { | |
739 | if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN)) | |
740 | break; | |
741 | p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); | |
742 | if(p->tmdlast == p->tmdnum) | |
743 | break; | |
744 | } | |
745 | } | |
746 | ||
747 | for(i=0;i<TMDNUM;i++) { | |
748 | struct tmd *tmdp = p->tmdhead + i; | |
749 | #ifdef XMT_VIA_SKB | |
750 | skb_save[i] = p->tmd_skb[i]; | |
751 | #endif | |
752 | buffer[i] = (u32) isa_bus_to_virt(tmdp->u.buffer); | |
753 | blen[i] = tmdp->blen; | |
754 | tmdp->u.s.status = 0x0; | |
755 | } | |
756 | ||
757 | for(i=0;i<RMDNUM;i++) { | |
758 | struct rmd *rmdp = p->rmdhead + i; | |
759 | rmdp->u.s.status = RCV_OWN; | |
760 | } | |
761 | p->tmdnum = p->xmit_queued = 0; | |
762 | writedatareg(CSR0_STRT | csr0); | |
763 | ||
764 | for(i=0;i<TMDNUM;i++) { | |
765 | int num = (i + p->tmdlast) & (TMDNUM-1); | |
766 | p->tmdhead[i].u.buffer = (u32) isa_virt_to_bus((char *)buffer[num]); /* status is part of buffer field */ | |
767 | p->tmdhead[i].blen = blen[num]; | |
768 | if(p->tmdhead[i].u.s.status & XMIT_OWN) { | |
769 | p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); | |
770 | p->xmit_queued = 1; | |
771 | writedatareg(CSR0_TDMD | CSR0_INEA | csr0); | |
772 | } | |
773 | #ifdef XMT_VIA_SKB | |
774 | p->tmd_skb[i] = skb_save[num]; | |
775 | #endif | |
776 | } | |
777 | p->rmdnum = p->tmdlast = 0; | |
778 | if(!p->lock) | |
779 | if (p->tmdnum || !p->xmit_queued) | |
780 | netif_wake_queue(dev); | |
781 | dev->trans_start = jiffies; | |
782 | } | |
783 | else | |
784 | writedatareg(CSR0_STRT | csr0); | |
785 | } | |
786 | ||
787 | /* | |
788 | * init lance (write init-values .. init-buffers) (open-helper) | |
789 | */ | |
790 | static int ni65_lance_reinit(struct net_device *dev) | |
791 | { | |
792 | int i; | |
793 | struct priv *p = (struct priv *) dev->priv; | |
794 | unsigned long flags; | |
795 | ||
796 | p->lock = 0; | |
797 | p->xmit_queued = 0; | |
798 | ||
799 | flags=claim_dma_lock(); | |
800 | disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */ | |
801 | set_dma_mode(dev->dma,DMA_MODE_CASCADE); | |
802 | enable_dma(dev->dma); | |
803 | release_dma_lock(flags); | |
804 | ||
805 | outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ | |
806 | if( (i=readreg(CSR0) ) != 0x4) | |
807 | { | |
808 | printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name, | |
809 | cards[p->cardno].cardname,(int) i); | |
810 | flags=claim_dma_lock(); | |
811 | disable_dma(dev->dma); | |
812 | release_dma_lock(flags); | |
813 | return 0; | |
814 | } | |
815 | ||
816 | p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0; | |
817 | for(i=0;i<TMDNUM;i++) | |
818 | { | |
819 | struct tmd *tmdp = p->tmdhead + i; | |
820 | #ifdef XMT_VIA_SKB | |
821 | if(p->tmd_skb[i]) { | |
822 | dev_kfree_skb(p->tmd_skb[i]); | |
823 | p->tmd_skb[i] = NULL; | |
824 | } | |
825 | #endif | |
826 | tmdp->u.buffer = 0x0; | |
827 | tmdp->u.s.status = XMIT_START | XMIT_END; | |
828 | tmdp->blen = tmdp->status2 = 0; | |
829 | } | |
830 | ||
831 | for(i=0;i<RMDNUM;i++) | |
832 | { | |
833 | struct rmd *rmdp = p->rmdhead + i; | |
834 | #ifdef RCV_VIA_SKB | |
835 | rmdp->u.buffer = (u32) isa_virt_to_bus(p->recv_skb[i]->data); | |
836 | #else | |
837 | rmdp->u.buffer = (u32) isa_virt_to_bus(p->recvbounce[i]); | |
838 | #endif | |
839 | rmdp->blen = -(R_BUF_SIZE-8); | |
840 | rmdp->mlen = 0; | |
841 | rmdp->u.s.status = RCV_OWN; | |
842 | } | |
843 | ||
844 | if(dev->flags & IFF_PROMISC) | |
845 | ni65_init_lance(p,dev->dev_addr,0x00,M_PROM); | |
846 | else if(dev->mc_count || dev->flags & IFF_ALLMULTI) | |
847 | ni65_init_lance(p,dev->dev_addr,0xff,0x0); | |
848 | else | |
849 | ni65_init_lance(p,dev->dev_addr,0x00,0x00); | |
850 | ||
851 | /* | |
852 | * ni65_set_lance_mem() sets L_ADDRREG to CSR0 | |
853 | * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED | |
854 | */ | |
855 | ||
856 | if(inw(PORT+L_DATAREG) & CSR0_IDON) { | |
857 | ni65_set_performance(p); | |
858 | /* init OK: start lance , enable interrupts */ | |
859 | writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); | |
860 | return 1; /* ->OK */ | |
861 | } | |
862 | printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG)); | |
863 | flags=claim_dma_lock(); | |
864 | disable_dma(dev->dma); | |
865 | release_dma_lock(flags); | |
866 | return 0; /* ->Error */ | |
867 | } | |
868 | ||
869 | /* | |
870 | * interrupt handler | |
871 | */ | |
7d12e780 | 872 | static irqreturn_t ni65_interrupt(int irq, void * dev_id) |
1da177e4 LT |
873 | { |
874 | int csr0 = 0; | |
875 | struct net_device *dev = dev_id; | |
876 | struct priv *p; | |
877 | int bcnt = 32; | |
878 | ||
879 | p = (struct priv *) dev->priv; | |
880 | ||
881 | spin_lock(&p->ring_lock); | |
6aa20a22 | 882 | |
1da177e4 LT |
883 | while(--bcnt) { |
884 | csr0 = inw(PORT+L_DATAREG); | |
885 | ||
886 | #if 0 | |
887 | writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */ | |
888 | #else | |
889 | writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */ | |
890 | #endif | |
891 | ||
892 | if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT))) | |
893 | break; | |
894 | ||
895 | if(csr0 & CSR0_RINT) /* RECV-int? */ | |
896 | ni65_recv_intr(dev,csr0); | |
897 | if(csr0 & CSR0_TINT) /* XMIT-int? */ | |
898 | ni65_xmit_intr(dev,csr0); | |
899 | ||
900 | if(csr0 & CSR0_ERR) | |
901 | { | |
902 | struct priv *p = (struct priv *) dev->priv; | |
903 | if(debuglevel > 1) | |
904 | printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0); | |
905 | if(csr0 & CSR0_BABL) | |
906 | p->stats.tx_errors++; | |
907 | if(csr0 & CSR0_MISS) { | |
908 | int i; | |
909 | for(i=0;i<RMDNUM;i++) | |
910 | printk("%02x ",p->rmdhead[i].u.s.status); | |
911 | printk("\n"); | |
912 | p->stats.rx_errors++; | |
913 | } | |
914 | if(csr0 & CSR0_MERR) { | |
915 | if(debuglevel > 1) | |
916 | printk(KERN_ERR "%s: Ooops .. memory error: %04x.\n",dev->name,csr0); | |
917 | ni65_stop_start(dev,p); | |
918 | } | |
919 | } | |
920 | } | |
921 | ||
922 | #ifdef RCV_PARANOIA_CHECK | |
923 | { | |
924 | int j; | |
925 | for(j=0;j<RMDNUM;j++) | |
926 | { | |
927 | struct priv *p = (struct priv *) dev->priv; | |
928 | int i,k,num1,num2; | |
929 | for(i=RMDNUM-1;i>0;i--) { | |
930 | num2 = (p->rmdnum + i) & (RMDNUM-1); | |
931 | if(!(p->rmdhead[num2].u.s.status & RCV_OWN)) | |
932 | break; | |
933 | } | |
934 | ||
935 | if(i) { | |
936 | for(k=0;k<RMDNUM;k++) { | |
937 | num1 = (p->rmdnum + k) & (RMDNUM-1); | |
938 | if(!(p->rmdhead[num1].u.s.status & RCV_OWN)) | |
939 | break; | |
940 | } | |
941 | if(!k) | |
942 | break; | |
943 | ||
944 | if(debuglevel > 0) | |
945 | { | |
946 | char buf[256],*buf1; | |
947 | int k; | |
948 | buf1 = buf; | |
949 | for(k=0;k<RMDNUM;k++) { | |
950 | sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */ | |
951 | buf1 += 3; | |
952 | } | |
953 | *buf1 = 0; | |
954 | printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf); | |
955 | } | |
956 | ||
957 | p->rmdnum = num1; | |
958 | ni65_recv_intr(dev,csr0); | |
959 | if((p->rmdhead[num2].u.s.status & RCV_OWN)) | |
960 | break; /* ok, we are 'in sync' again */ | |
961 | } | |
962 | else | |
963 | break; | |
964 | } | |
965 | } | |
966 | #endif | |
967 | ||
968 | if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) { | |
969 | printk(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name); | |
970 | ni65_stop_start(dev,p); | |
971 | } | |
972 | else | |
973 | writedatareg(CSR0_INEA); | |
974 | ||
975 | spin_unlock(&p->ring_lock); | |
976 | return IRQ_HANDLED; | |
977 | } | |
978 | ||
979 | /* | |
980 | * We have received an Xmit-Interrupt .. | |
981 | * send a new packet if necessary | |
982 | */ | |
983 | static void ni65_xmit_intr(struct net_device *dev,int csr0) | |
984 | { | |
985 | struct priv *p = (struct priv *) dev->priv; | |
986 | ||
987 | while(p->xmit_queued) | |
988 | { | |
989 | struct tmd *tmdp = p->tmdhead + p->tmdlast; | |
990 | int tmdstat = tmdp->u.s.status; | |
991 | ||
992 | if(tmdstat & XMIT_OWN) | |
993 | break; | |
994 | ||
995 | if(tmdstat & XMIT_ERR) | |
996 | { | |
997 | #if 0 | |
998 | if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3) | |
999 | printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name); | |
1000 | #endif | |
1001 | /* checking some errors */ | |
1002 | if(tmdp->status2 & XMIT_RTRY) | |
1003 | p->stats.tx_aborted_errors++; | |
1004 | if(tmdp->status2 & XMIT_LCAR) | |
1005 | p->stats.tx_carrier_errors++; | |
1006 | if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) { | |
1007 | /* this stops the xmitter */ | |
1008 | p->stats.tx_fifo_errors++; | |
1009 | if(debuglevel > 0) | |
1010 | printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name); | |
1011 | if(p->features & INIT_RING_BEFORE_START) { | |
1012 | tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; /* test: resend this frame */ | |
1013 | ni65_stop_start(dev,p); | |
1014 | break; /* no more Xmit processing .. */ | |
1015 | } | |
1016 | else | |
1017 | ni65_stop_start(dev,p); | |
1018 | } | |
1019 | if(debuglevel > 2) | |
1020 | printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2); | |
1021 | if(!(csr0 & CSR0_BABL)) /* don't count errors twice */ | |
1022 | p->stats.tx_errors++; | |
1023 | tmdp->status2 = 0; | |
1024 | } | |
1025 | else { | |
1026 | p->stats.tx_bytes -= (short)(tmdp->blen); | |
1027 | p->stats.tx_packets++; | |
1028 | } | |
1029 | ||
1030 | #ifdef XMT_VIA_SKB | |
1031 | if(p->tmd_skb[p->tmdlast]) { | |
1032 | dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]); | |
1033 | p->tmd_skb[p->tmdlast] = NULL; | |
1034 | } | |
1035 | #endif | |
1036 | ||
1037 | p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); | |
1038 | if(p->tmdlast == p->tmdnum) | |
1039 | p->xmit_queued = 0; | |
1040 | } | |
1041 | netif_wake_queue(dev); | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | * We have received a packet | |
1046 | */ | |
1047 | static void ni65_recv_intr(struct net_device *dev,int csr0) | |
1048 | { | |
1049 | struct rmd *rmdp; | |
1050 | int rmdstat,len; | |
1051 | int cnt=0; | |
1052 | struct priv *p = (struct priv *) dev->priv; | |
1053 | ||
1054 | rmdp = p->rmdhead + p->rmdnum; | |
1055 | while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN)) | |
1056 | { | |
1057 | cnt++; | |
1058 | if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */ | |
1059 | { | |
1060 | if(!(rmdstat & RCV_ERR)) { | |
1061 | if(rmdstat & RCV_START) | |
1062 | { | |
1063 | p->stats.rx_length_errors++; | |
1064 | printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff); | |
1065 | } | |
1066 | } | |
1067 | else { | |
1068 | if(debuglevel > 2) | |
1069 | printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n", | |
1070 | dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) ); | |
1071 | if(rmdstat & RCV_FRAM) | |
1072 | p->stats.rx_frame_errors++; | |
1073 | if(rmdstat & RCV_OFLO) | |
1074 | p->stats.rx_over_errors++; | |
1075 | if(rmdstat & RCV_CRC) | |
1076 | p->stats.rx_crc_errors++; | |
1077 | if(rmdstat & RCV_BUF_ERR) | |
1078 | p->stats.rx_fifo_errors++; | |
1079 | } | |
1080 | if(!(csr0 & CSR0_MISS)) /* don't count errors twice */ | |
1081 | p->stats.rx_errors++; | |
1082 | } | |
1083 | else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60) | |
1084 | { | |
1085 | #ifdef RCV_VIA_SKB | |
1086 | struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC); | |
1087 | if (skb) | |
1088 | skb_reserve(skb,16); | |
1089 | #else | |
1090 | struct sk_buff *skb = dev_alloc_skb(len+2); | |
1091 | #endif | |
1092 | if(skb) | |
1093 | { | |
1094 | skb_reserve(skb,2); | |
1da177e4 LT |
1095 | #ifdef RCV_VIA_SKB |
1096 | if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) { | |
1097 | skb_put(skb,len); | |
8c7b7faa | 1098 | skb_copy_to_linear_data(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len); |
1da177e4 LT |
1099 | } |
1100 | else { | |
1101 | struct sk_buff *skb1 = p->recv_skb[p->rmdnum]; | |
1102 | skb_put(skb,R_BUF_SIZE); | |
1103 | p->recv_skb[p->rmdnum] = skb; | |
1104 | rmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); | |
1105 | skb = skb1; | |
1106 | skb_trim(skb,len); | |
1107 | } | |
1108 | #else | |
1109 | skb_put(skb,len); | |
8c7b7faa | 1110 | skb_copy_to_linear_data(skb, (unsigned char *) p->recvbounce[p->rmdnum],len); |
1da177e4 LT |
1111 | #endif |
1112 | p->stats.rx_packets++; | |
1113 | p->stats.rx_bytes += len; | |
1114 | skb->protocol=eth_type_trans(skb,dev); | |
1115 | netif_rx(skb); | |
1116 | dev->last_rx = jiffies; | |
1117 | } | |
1118 | else | |
1119 | { | |
1120 | printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name); | |
1121 | p->stats.rx_dropped++; | |
1122 | } | |
1123 | } | |
1124 | else { | |
1125 | printk(KERN_INFO "%s: received runt packet\n",dev->name); | |
1126 | p->stats.rx_errors++; | |
1127 | } | |
1128 | rmdp->blen = -(R_BUF_SIZE-8); | |
1129 | rmdp->mlen = 0; | |
1130 | rmdp->u.s.status = RCV_OWN; /* change owner */ | |
1131 | p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1); | |
1132 | rmdp = p->rmdhead + p->rmdnum; | |
1133 | } | |
1134 | } | |
1135 | ||
1136 | /* | |
1137 | * kick xmitter .. | |
1138 | */ | |
6aa20a22 | 1139 | |
1da177e4 LT |
1140 | static void ni65_timeout(struct net_device *dev) |
1141 | { | |
1142 | int i; | |
1143 | struct priv *p = (struct priv *) dev->priv; | |
1144 | ||
1145 | printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name); | |
1146 | for(i=0;i<TMDNUM;i++) | |
1147 | printk("%02x ",p->tmdhead[i].u.s.status); | |
1148 | printk("\n"); | |
1149 | ni65_lance_reinit(dev); | |
1150 | dev->trans_start = jiffies; | |
1151 | netif_wake_queue(dev); | |
1152 | } | |
1153 | ||
1154 | /* | |
1155 | * Send a packet | |
1156 | */ | |
1157 | ||
1158 | static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1159 | { | |
1160 | struct priv *p = (struct priv *) dev->priv; | |
1161 | ||
1162 | netif_stop_queue(dev); | |
6aa20a22 | 1163 | |
1da177e4 LT |
1164 | if (test_and_set_bit(0, (void*)&p->lock)) { |
1165 | printk(KERN_ERR "%s: Queue was locked.\n", dev->name); | |
1166 | return 1; | |
1167 | } | |
1168 | ||
1169 | { | |
1170 | short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; | |
1171 | struct tmd *tmdp; | |
1172 | unsigned long flags; | |
1173 | ||
1174 | #ifdef XMT_VIA_SKB | |
1175 | if( (unsigned long) (skb->data + skb->len) > 0x1000000) { | |
1176 | #endif | |
1177 | ||
d626f62b ACM |
1178 | skb_copy_from_linear_data(skb, p->tmdbounce[p->tmdbouncenum], |
1179 | skb->len > T_BUF_SIZE ? T_BUF_SIZE : | |
1180 | skb->len); | |
1da177e4 LT |
1181 | if (len > skb->len) |
1182 | memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len); | |
1183 | dev_kfree_skb (skb); | |
1184 | ||
1185 | spin_lock_irqsave(&p->ring_lock, flags); | |
1186 | tmdp = p->tmdhead + p->tmdnum; | |
1187 | tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]); | |
1188 | p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1); | |
1189 | ||
1190 | #ifdef XMT_VIA_SKB | |
1191 | } | |
1192 | else { | |
1193 | spin_lock_irqsave(&p->ring_lock, flags); | |
1194 | ||
1195 | tmdp = p->tmdhead + p->tmdnum; | |
1196 | tmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); | |
1197 | p->tmd_skb[p->tmdnum] = skb; | |
1198 | } | |
1199 | #endif | |
1200 | tmdp->blen = -len; | |
1201 | ||
1202 | tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; | |
1203 | writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */ | |
1204 | ||
1205 | p->xmit_queued = 1; | |
1206 | p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); | |
1207 | ||
1208 | if(p->tmdnum != p->tmdlast) | |
1209 | netif_wake_queue(dev); | |
6aa20a22 | 1210 | |
1da177e4 LT |
1211 | p->lock = 0; |
1212 | dev->trans_start = jiffies; | |
6aa20a22 | 1213 | |
1da177e4 LT |
1214 | spin_unlock_irqrestore(&p->ring_lock, flags); |
1215 | } | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | static struct net_device_stats *ni65_get_stats(struct net_device *dev) | |
1221 | { | |
1222 | ||
1223 | #if 0 | |
1224 | int i; | |
1225 | struct priv *p = (struct priv *) dev->priv; | |
1226 | for(i=0;i<RMDNUM;i++) | |
1227 | { | |
1228 | struct rmd *rmdp = p->rmdhead + ((p->rmdnum + i) & (RMDNUM-1)); | |
1229 | printk("%02x ",rmdp->u.s.status); | |
1230 | } | |
1231 | printk("\n"); | |
1232 | #endif | |
1233 | ||
1234 | return &((struct priv *) dev->priv)->stats; | |
1235 | } | |
1236 | ||
1237 | static void set_multicast_list(struct net_device *dev) | |
1238 | { | |
1239 | if(!ni65_lance_reinit(dev)) | |
1240 | printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name); | |
1241 | netif_wake_queue(dev); | |
1242 | } | |
1243 | ||
1244 | #ifdef MODULE | |
1245 | static struct net_device *dev_ni65; | |
1246 | ||
1247 | module_param(irq, int, 0); | |
1248 | module_param(io, int, 0); | |
1249 | module_param(dma, int, 0); | |
1250 | MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)"); | |
1251 | MODULE_PARM_DESC(io, "ni6510 I/O base address"); | |
1252 | MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)"); | |
1253 | ||
1e13b0d8 | 1254 | int __init init_module(void) |
1da177e4 LT |
1255 | { |
1256 | dev_ni65 = ni65_probe(-1); | |
1257 | return IS_ERR(dev_ni65) ? PTR_ERR(dev_ni65) : 0; | |
1258 | } | |
1259 | ||
afc8eb46 | 1260 | void __exit cleanup_module(void) |
1da177e4 LT |
1261 | { |
1262 | unregister_netdev(dev_ni65); | |
1263 | cleanup_card(dev_ni65); | |
1264 | free_netdev(dev_ni65); | |
1265 | } | |
1266 | #endif /* MODULE */ | |
1267 | ||
1268 | MODULE_LICENSE("GPL"); | |
1269 | ||
1270 | /* | |
1271 | * END of ni65.c | |
1272 | */ |