]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Copyright (c) 1997-2000 LAN Media Corporation (LMC) | |
3 | * All rights reserved. www.lanmedia.com | |
4 | * | |
5 | * This code is written by: | |
6 | * Andrew Stanley-Jones (asj@cban.com) | |
7 | * Rob Braun (bbraun@vix.com), | |
8 | * Michael Graff (explorer@vix.com) and | |
9 | * Matt Thomas (matt@3am-software.com). | |
10 | * | |
11 | * With Help By: | |
12 | * David Boggs | |
13 | * Ron Crane | |
14 | * Alan Cox | |
15 | * | |
16 | * This software may be used and distributed according to the terms | |
17 | * of the GNU General Public License version 2, incorporated herein by reference. | |
18 | * | |
19 | * Driver for the LanMedia LMC5200, LMC5245, LMC1000, LMC1200 cards. | |
20 | * | |
21 | * To control link specific options lmcctl is required. | |
22 | * It can be obtained from ftp.lanmedia.com. | |
23 | * | |
24 | * Linux driver notes: | |
25 | * Linux uses the device struct lmc_private to pass private information | |
26 | * arround. | |
27 | * | |
28 | * The initialization portion of this driver (the lmc_reset() and the | |
29 | * lmc_dec_reset() functions, as well as the led controls and the | |
30 | * lmc_initcsrs() functions. | |
31 | * | |
32 | * The watchdog function runs every second and checks to see if | |
33 | * we still have link, and that the timing source is what we expected | |
34 | * it to be. If link is lost, the interface is marked down, and | |
35 | * we no longer can transmit. | |
36 | * | |
37 | */ | |
38 | ||
39 | /* $Id: lmc_main.c,v 1.36 2000/04/11 05:25:25 asj Exp $ */ | |
40 | ||
41 | #include <linux/kernel.h> | |
42 | #include <linux/module.h> | |
43 | #include <linux/string.h> | |
44 | #include <linux/timer.h> | |
45 | #include <linux/ptrace.h> | |
46 | #include <linux/errno.h> | |
47 | #include <linux/ioport.h> | |
48 | #include <linux/slab.h> | |
49 | #include <linux/interrupt.h> | |
50 | #include <linux/pci.h> | |
51 | #include <linux/delay.h> | |
52 | #include <linux/init.h> | |
53 | #include <linux/in.h> | |
54 | #include <linux/if_arp.h> | |
55 | #include <linux/netdevice.h> | |
56 | #include <linux/etherdevice.h> | |
57 | #include <linux/skbuff.h> | |
58 | #include <linux/inet.h> | |
59 | #include <linux/bitops.h> | |
60 | ||
61 | #include <net/syncppp.h> | |
62 | ||
63 | #include <asm/processor.h> /* Processor type for cache alignment. */ | |
64 | #include <asm/io.h> | |
65 | #include <asm/dma.h> | |
66 | #include <asm/uaccess.h> | |
67 | //#include <asm/spinlock.h> | |
68 | ||
69 | #define DRIVER_MAJOR_VERSION 1 | |
70 | #define DRIVER_MINOR_VERSION 34 | |
71 | #define DRIVER_SUB_VERSION 0 | |
72 | ||
73 | #define DRIVER_VERSION ((DRIVER_MAJOR_VERSION << 8) + DRIVER_MINOR_VERSION) | |
74 | ||
75 | #include "lmc.h" | |
76 | #include "lmc_var.h" | |
77 | #include "lmc_ioctl.h" | |
78 | #include "lmc_debug.h" | |
79 | #include "lmc_proto.h" | |
80 | ||
81 | static int lmc_first_load = 0; | |
82 | ||
83 | static int LMC_PKT_BUF_SZ = 1542; | |
84 | ||
85 | static struct pci_device_id lmc_pci_tbl[] = { | |
86 | { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST, | |
87 | PCI_VENDOR_ID_LMC, PCI_ANY_ID }, | |
88 | { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST, | |
89 | PCI_ANY_ID, PCI_VENDOR_ID_LMC }, | |
90 | { 0 } | |
91 | }; | |
92 | ||
93 | MODULE_DEVICE_TABLE(pci, lmc_pci_tbl); | |
94 | MODULE_LICENSE("GPL"); | |
95 | ||
96 | ||
97 | static int lmc_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
98 | static int lmc_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
99 | static int lmc_rx (struct net_device *dev); | |
100 | static int lmc_open(struct net_device *dev); | |
101 | static int lmc_close(struct net_device *dev); | |
102 | static struct net_device_stats *lmc_get_stats(struct net_device *dev); | |
7d12e780 | 103 | static irqreturn_t lmc_interrupt(int irq, void *dev_instance); |
1da177e4 LT |
104 | static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, size_t csr_size); |
105 | static void lmc_softreset(lmc_softc_t * const); | |
106 | static void lmc_running_reset(struct net_device *dev); | |
107 | static int lmc_ifdown(struct net_device * const); | |
108 | static void lmc_watchdog(unsigned long data); | |
109 | static void lmc_reset(lmc_softc_t * const sc); | |
110 | static void lmc_dec_reset(lmc_softc_t * const sc); | |
111 | static void lmc_driver_timeout(struct net_device *dev); | |
112 | ||
113 | /* | |
114 | * linux reserves 16 device specific IOCTLs. We call them | |
115 | * LMCIOC* to control various bits of our world. | |
116 | */ | |
117 | int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/ | |
118 | { | |
119 | lmc_softc_t *sc; | |
120 | lmc_ctl_t ctl; | |
121 | int ret; | |
122 | u_int16_t regVal; | |
123 | unsigned long flags; | |
124 | ||
125 | struct sppp *sp; | |
126 | ||
127 | ret = -EOPNOTSUPP; | |
128 | ||
129 | sc = dev->priv; | |
130 | ||
131 | lmc_trace(dev, "lmc_ioctl in"); | |
132 | ||
133 | /* | |
134 | * Most functions mess with the structure | |
135 | * Disable interrupts while we do the polling | |
136 | */ | |
137 | spin_lock_irqsave(&sc->lmc_lock, flags); | |
138 | ||
139 | switch (cmd) { | |
140 | /* | |
141 | * Return current driver state. Since we keep this up | |
142 | * To date internally, just copy this out to the user. | |
143 | */ | |
144 | case LMCIOCGINFO: /*fold01*/ | |
145 | if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof (lmc_ctl_t))) | |
146 | return -EFAULT; | |
147 | ret = 0; | |
148 | break; | |
149 | ||
150 | case LMCIOCSINFO: /*fold01*/ | |
151 | sp = &((struct ppp_device *) dev)->sppp; | |
152 | if (!capable(CAP_NET_ADMIN)) { | |
153 | ret = -EPERM; | |
154 | break; | |
155 | } | |
156 | ||
157 | if(dev->flags & IFF_UP){ | |
158 | ret = -EBUSY; | |
159 | break; | |
160 | } | |
161 | ||
162 | if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t))) | |
163 | return -EFAULT; | |
164 | ||
165 | sc->lmc_media->set_status (sc, &ctl); | |
166 | ||
167 | if(ctl.crc_length != sc->ictl.crc_length) { | |
168 | sc->lmc_media->set_crc_length(sc, ctl.crc_length); | |
169 | if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16) | |
170 | sc->TxDescriptControlInit |= LMC_TDES_ADD_CRC_DISABLE; | |
171 | else | |
172 | sc->TxDescriptControlInit &= ~LMC_TDES_ADD_CRC_DISABLE; | |
173 | } | |
174 | ||
175 | if (ctl.keepalive_onoff == LMC_CTL_OFF) | |
176 | sp->pp_flags &= ~PP_KEEPALIVE; /* Turn off */ | |
177 | else | |
178 | sp->pp_flags |= PP_KEEPALIVE; /* Turn on */ | |
179 | ||
180 | ret = 0; | |
181 | break; | |
182 | ||
183 | case LMCIOCIFTYPE: /*fold01*/ | |
184 | { | |
185 | u_int16_t old_type = sc->if_type; | |
186 | u_int16_t new_type; | |
187 | ||
188 | if (!capable(CAP_NET_ADMIN)) { | |
189 | ret = -EPERM; | |
190 | break; | |
191 | } | |
192 | ||
193 | if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u_int16_t))) | |
194 | return -EFAULT; | |
195 | ||
196 | ||
197 | if (new_type == old_type) | |
198 | { | |
199 | ret = 0 ; | |
200 | break; /* no change */ | |
201 | } | |
202 | ||
203 | lmc_proto_close(sc); | |
204 | lmc_proto_detach(sc); | |
205 | ||
206 | sc->if_type = new_type; | |
207 | // lmc_proto_init(sc); | |
208 | lmc_proto_attach(sc); | |
209 | lmc_proto_open(sc); | |
210 | ||
211 | ret = 0 ; | |
212 | break ; | |
213 | } | |
214 | ||
215 | case LMCIOCGETXINFO: /*fold01*/ | |
216 | sc->lmc_xinfo.Magic0 = 0xBEEFCAFE; | |
217 | ||
218 | sc->lmc_xinfo.PciCardType = sc->lmc_cardtype; | |
219 | sc->lmc_xinfo.PciSlotNumber = 0; | |
220 | sc->lmc_xinfo.DriverMajorVersion = DRIVER_MAJOR_VERSION; | |
221 | sc->lmc_xinfo.DriverMinorVersion = DRIVER_MINOR_VERSION; | |
222 | sc->lmc_xinfo.DriverSubVersion = DRIVER_SUB_VERSION; | |
223 | sc->lmc_xinfo.XilinxRevisionNumber = | |
224 | lmc_mii_readreg (sc, 0, 3) & 0xf; | |
225 | sc->lmc_xinfo.MaxFrameSize = LMC_PKT_BUF_SZ; | |
226 | sc->lmc_xinfo.link_status = sc->lmc_media->get_link_status (sc); | |
227 | sc->lmc_xinfo.mii_reg16 = lmc_mii_readreg (sc, 0, 16); | |
228 | ||
229 | sc->lmc_xinfo.Magic1 = 0xDEADBEEF; | |
230 | ||
231 | if (copy_to_user(ifr->ifr_data, &sc->lmc_xinfo, | |
232 | sizeof (struct lmc_xinfo))) | |
233 | return -EFAULT; | |
234 | ret = 0; | |
235 | ||
236 | break; | |
237 | ||
238 | case LMCIOCGETLMCSTATS: /*fold01*/ | |
239 | if (sc->lmc_cardtype == LMC_CARDTYPE_T1){ | |
240 | lmc_mii_writereg (sc, 0, 17, T1FRAMER_FERR_LSB); | |
241 | sc->stats.framingBitErrorCount += | |
242 | lmc_mii_readreg (sc, 0, 18) & 0xff; | |
243 | lmc_mii_writereg (sc, 0, 17, T1FRAMER_FERR_MSB); | |
244 | sc->stats.framingBitErrorCount += | |
245 | (lmc_mii_readreg (sc, 0, 18) & 0xff) << 8; | |
246 | lmc_mii_writereg (sc, 0, 17, T1FRAMER_LCV_LSB); | |
247 | sc->stats.lineCodeViolationCount += | |
248 | lmc_mii_readreg (sc, 0, 18) & 0xff; | |
249 | lmc_mii_writereg (sc, 0, 17, T1FRAMER_LCV_MSB); | |
250 | sc->stats.lineCodeViolationCount += | |
251 | (lmc_mii_readreg (sc, 0, 18) & 0xff) << 8; | |
252 | lmc_mii_writereg (sc, 0, 17, T1FRAMER_AERR); | |
253 | regVal = lmc_mii_readreg (sc, 0, 18) & 0xff; | |
254 | ||
255 | sc->stats.lossOfFrameCount += | |
256 | (regVal & T1FRAMER_LOF_MASK) >> 4; | |
257 | sc->stats.changeOfFrameAlignmentCount += | |
258 | (regVal & T1FRAMER_COFA_MASK) >> 2; | |
259 | sc->stats.severelyErroredFrameCount += | |
260 | regVal & T1FRAMER_SEF_MASK; | |
261 | } | |
262 | ||
263 | if (copy_to_user(ifr->ifr_data, &sc->stats, | |
264 | sizeof (struct lmc_statistics))) | |
265 | return -EFAULT; | |
266 | ||
267 | ret = 0; | |
268 | break; | |
269 | ||
270 | case LMCIOCCLEARLMCSTATS: /*fold01*/ | |
271 | if (!capable(CAP_NET_ADMIN)){ | |
272 | ret = -EPERM; | |
273 | break; | |
274 | } | |
275 | ||
276 | memset (&sc->stats, 0, sizeof (struct lmc_statistics)); | |
277 | sc->stats.check = STATCHECK; | |
278 | sc->stats.version_size = (DRIVER_VERSION << 16) + | |
279 | sizeof (struct lmc_statistics); | |
280 | sc->stats.lmc_cardtype = sc->lmc_cardtype; | |
281 | ret = 0; | |
282 | break; | |
283 | ||
284 | case LMCIOCSETCIRCUIT: /*fold01*/ | |
285 | if (!capable(CAP_NET_ADMIN)){ | |
286 | ret = -EPERM; | |
287 | break; | |
288 | } | |
289 | ||
290 | if(dev->flags & IFF_UP){ | |
291 | ret = -EBUSY; | |
292 | break; | |
293 | } | |
294 | ||
295 | if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t))) | |
296 | return -EFAULT; | |
297 | sc->lmc_media->set_circuit_type(sc, ctl.circuit_type); | |
298 | sc->ictl.circuit_type = ctl.circuit_type; | |
299 | ret = 0; | |
300 | ||
301 | break; | |
302 | ||
303 | case LMCIOCRESET: /*fold01*/ | |
304 | if (!capable(CAP_NET_ADMIN)){ | |
305 | ret = -EPERM; | |
306 | break; | |
307 | } | |
308 | ||
309 | /* Reset driver and bring back to current state */ | |
310 | printk (" REG16 before reset +%04x\n", lmc_mii_readreg (sc, 0, 16)); | |
311 | lmc_running_reset (dev); | |
312 | printk (" REG16 after reset +%04x\n", lmc_mii_readreg (sc, 0, 16)); | |
313 | ||
314 | LMC_EVENT_LOG(LMC_EVENT_FORCEDRESET, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16)); | |
315 | ||
316 | ret = 0; | |
317 | break; | |
318 | ||
319 | #ifdef DEBUG | |
320 | case LMCIOCDUMPEVENTLOG: | |
321 | if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof (u32))) | |
322 | return -EFAULT; | |
323 | if (copy_to_user(ifr->ifr_data + sizeof (u32), lmcEventLogBuf, sizeof (lmcEventLogBuf))) | |
324 | return -EFAULT; | |
325 | ||
326 | ret = 0; | |
327 | break; | |
328 | #endif /* end ifdef _DBG_EVENTLOG */ | |
329 | case LMCIOCT1CONTROL: /*fold01*/ | |
330 | if (sc->lmc_cardtype != LMC_CARDTYPE_T1){ | |
331 | ret = -EOPNOTSUPP; | |
332 | break; | |
333 | } | |
334 | break; | |
335 | case LMCIOCXILINX: /*fold01*/ | |
336 | { | |
337 | struct lmc_xilinx_control xc; /*fold02*/ | |
338 | ||
339 | if (!capable(CAP_NET_ADMIN)){ | |
340 | ret = -EPERM; | |
341 | break; | |
342 | } | |
343 | ||
344 | /* | |
345 | * Stop the xwitter whlie we restart the hardware | |
346 | */ | |
347 | netif_stop_queue(dev); | |
348 | ||
349 | if (copy_from_user(&xc, ifr->ifr_data, sizeof (struct lmc_xilinx_control))) | |
350 | return -EFAULT; | |
351 | switch(xc.command){ | |
352 | case lmc_xilinx_reset: /*fold02*/ | |
353 | { | |
354 | u16 mii; | |
355 | mii = lmc_mii_readreg (sc, 0, 16); | |
356 | ||
357 | /* | |
358 | * Make all of them 0 and make input | |
359 | */ | |
360 | lmc_gpio_mkinput(sc, 0xff); | |
361 | ||
362 | /* | |
363 | * make the reset output | |
364 | */ | |
365 | lmc_gpio_mkoutput(sc, LMC_GEP_RESET); | |
366 | ||
367 | /* | |
368 | * RESET low to force configuration. This also forces | |
369 | * the transmitter clock to be internal, but we expect to reset | |
370 | * that later anyway. | |
371 | */ | |
372 | ||
373 | sc->lmc_gpio &= ~LMC_GEP_RESET; | |
374 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); | |
375 | ||
376 | ||
377 | /* | |
378 | * hold for more than 10 microseconds | |
379 | */ | |
380 | udelay(50); | |
381 | ||
382 | sc->lmc_gpio |= LMC_GEP_RESET; | |
383 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); | |
384 | ||
385 | ||
386 | /* | |
387 | * stop driving Xilinx-related signals | |
388 | */ | |
389 | lmc_gpio_mkinput(sc, 0xff); | |
390 | ||
391 | /* Reset the frammer hardware */ | |
392 | sc->lmc_media->set_link_status (sc, 1); | |
393 | sc->lmc_media->set_status (sc, NULL); | |
394 | // lmc_softreset(sc); | |
395 | ||
396 | { | |
397 | int i; | |
398 | for(i = 0; i < 5; i++){ | |
399 | lmc_led_on(sc, LMC_DS3_LED0); | |
400 | mdelay(100); | |
401 | lmc_led_off(sc, LMC_DS3_LED0); | |
402 | lmc_led_on(sc, LMC_DS3_LED1); | |
403 | mdelay(100); | |
404 | lmc_led_off(sc, LMC_DS3_LED1); | |
405 | lmc_led_on(sc, LMC_DS3_LED3); | |
406 | mdelay(100); | |
407 | lmc_led_off(sc, LMC_DS3_LED3); | |
408 | lmc_led_on(sc, LMC_DS3_LED2); | |
409 | mdelay(100); | |
410 | lmc_led_off(sc, LMC_DS3_LED2); | |
411 | } | |
412 | } | |
413 | ||
414 | ||
415 | ||
416 | ret = 0x0; | |
417 | ||
418 | } | |
419 | ||
420 | break; | |
421 | case lmc_xilinx_load_prom: /*fold02*/ | |
422 | { | |
423 | u16 mii; | |
424 | int timeout = 500000; | |
425 | mii = lmc_mii_readreg (sc, 0, 16); | |
426 | ||
427 | /* | |
428 | * Make all of them 0 and make input | |
429 | */ | |
430 | lmc_gpio_mkinput(sc, 0xff); | |
431 | ||
432 | /* | |
433 | * make the reset output | |
434 | */ | |
435 | lmc_gpio_mkoutput(sc, LMC_GEP_DP | LMC_GEP_RESET); | |
436 | ||
437 | /* | |
438 | * RESET low to force configuration. This also forces | |
439 | * the transmitter clock to be internal, but we expect to reset | |
440 | * that later anyway. | |
441 | */ | |
442 | ||
443 | sc->lmc_gpio &= ~(LMC_GEP_RESET | LMC_GEP_DP); | |
444 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); | |
445 | ||
446 | ||
447 | /* | |
448 | * hold for more than 10 microseconds | |
449 | */ | |
450 | udelay(50); | |
451 | ||
452 | sc->lmc_gpio |= LMC_GEP_DP | LMC_GEP_RESET; | |
453 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); | |
454 | ||
455 | /* | |
456 | * busy wait for the chip to reset | |
457 | */ | |
458 | while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 && | |
459 | (timeout-- > 0)) | |
460 | ; | |
461 | ||
462 | ||
463 | /* | |
464 | * stop driving Xilinx-related signals | |
465 | */ | |
466 | lmc_gpio_mkinput(sc, 0xff); | |
467 | ||
468 | ret = 0x0; | |
469 | ||
470 | ||
471 | break; | |
472 | ||
473 | } | |
474 | ||
475 | case lmc_xilinx_load: /*fold02*/ | |
476 | { | |
477 | char *data; | |
478 | int pos; | |
479 | int timeout = 500000; | |
480 | ||
481 | if(xc.data == 0x0){ | |
482 | ret = -EINVAL; | |
483 | break; | |
484 | } | |
485 | ||
486 | data = kmalloc(xc.len, GFP_KERNEL); | |
487 | if(data == 0x0){ | |
488 | printk(KERN_WARNING "%s: Failed to allocate memory for copy\n", dev->name); | |
489 | ret = -ENOMEM; | |
490 | break; | |
491 | } | |
492 | ||
493 | if(copy_from_user(data, xc.data, xc.len)) | |
494 | { | |
495 | kfree(data); | |
496 | ret = -ENOMEM; | |
497 | break; | |
498 | } | |
499 | ||
500 | printk("%s: Starting load of data Len: %d at 0x%p == 0x%p\n", dev->name, xc.len, xc.data, data); | |
501 | ||
502 | lmc_gpio_mkinput(sc, 0xff); | |
503 | ||
504 | /* | |
505 | * Clear the Xilinx and start prgramming from the DEC | |
506 | */ | |
507 | ||
508 | /* | |
509 | * Set ouput as: | |
510 | * Reset: 0 (active) | |
511 | * DP: 0 (active) | |
512 | * Mode: 1 | |
513 | * | |
514 | */ | |
515 | sc->lmc_gpio = 0x00; | |
516 | sc->lmc_gpio &= ~LMC_GEP_DP; | |
517 | sc->lmc_gpio &= ~LMC_GEP_RESET; | |
518 | sc->lmc_gpio |= LMC_GEP_MODE; | |
519 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); | |
520 | ||
521 | lmc_gpio_mkoutput(sc, LMC_GEP_MODE | LMC_GEP_DP | LMC_GEP_RESET); | |
522 | ||
523 | /* | |
524 | * Wait at least 10 us 20 to be safe | |
525 | */ | |
526 | udelay(50); | |
527 | ||
528 | /* | |
529 | * Clear reset and activate programming lines | |
530 | * Reset: Input | |
531 | * DP: Input | |
532 | * Clock: Output | |
533 | * Data: Output | |
534 | * Mode: Output | |
535 | */ | |
536 | lmc_gpio_mkinput(sc, LMC_GEP_DP | LMC_GEP_RESET); | |
537 | ||
538 | /* | |
539 | * Set LOAD, DATA, Clock to 1 | |
540 | */ | |
541 | sc->lmc_gpio = 0x00; | |
542 | sc->lmc_gpio |= LMC_GEP_MODE; | |
543 | sc->lmc_gpio |= LMC_GEP_DATA; | |
544 | sc->lmc_gpio |= LMC_GEP_CLK; | |
545 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); | |
546 | ||
547 | lmc_gpio_mkoutput(sc, LMC_GEP_DATA | LMC_GEP_CLK | LMC_GEP_MODE ); | |
548 | ||
549 | /* | |
550 | * busy wait for the chip to reset | |
551 | */ | |
552 | while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 && | |
553 | (timeout-- > 0)) | |
554 | ; | |
555 | ||
556 | printk(KERN_DEBUG "%s: Waited %d for the Xilinx to clear it's memory\n", dev->name, 500000-timeout); | |
557 | ||
558 | for(pos = 0; pos < xc.len; pos++){ | |
559 | switch(data[pos]){ | |
560 | case 0: | |
561 | sc->lmc_gpio &= ~LMC_GEP_DATA; /* Data is 0 */ | |
562 | break; | |
563 | case 1: | |
564 | sc->lmc_gpio |= LMC_GEP_DATA; /* Data is 1 */ | |
565 | break; | |
566 | default: | |
567 | printk(KERN_WARNING "%s Bad data in xilinx programming data at %d, got %d wanted 0 or 1\n", dev->name, pos, data[pos]); | |
568 | sc->lmc_gpio |= LMC_GEP_DATA; /* Assume it's 1 */ | |
569 | } | |
570 | sc->lmc_gpio &= ~LMC_GEP_CLK; /* Clock to zero */ | |
571 | sc->lmc_gpio |= LMC_GEP_MODE; | |
572 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); | |
573 | udelay(1); | |
574 | ||
575 | sc->lmc_gpio |= LMC_GEP_CLK; /* Put the clack back to one */ | |
576 | sc->lmc_gpio |= LMC_GEP_MODE; | |
577 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); | |
578 | udelay(1); | |
579 | } | |
580 | if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0){ | |
581 | printk(KERN_WARNING "%s: Reprogramming FAILED. Needs to be reprogrammed. (corrupted data)\n", dev->name); | |
582 | } | |
583 | else if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_DP) == 0){ | |
584 | printk(KERN_WARNING "%s: Reprogramming FAILED. Needs to be reprogrammed. (done)\n", dev->name); | |
585 | } | |
586 | else { | |
587 | printk(KERN_DEBUG "%s: Done reprogramming Xilinx, %d bits, good luck!\n", dev->name, pos); | |
588 | } | |
589 | ||
590 | lmc_gpio_mkinput(sc, 0xff); | |
591 | ||
592 | sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET; | |
593 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); | |
594 | ||
595 | sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET; | |
596 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); | |
597 | ||
598 | kfree(data); | |
599 | ||
600 | ret = 0; | |
601 | ||
602 | break; | |
603 | } | |
604 | default: /*fold02*/ | |
605 | ret = -EBADE; | |
606 | break; | |
607 | } | |
608 | ||
609 | netif_wake_queue(dev); | |
610 | sc->lmc_txfull = 0; | |
611 | ||
612 | } | |
613 | break; | |
614 | default: /*fold01*/ | |
615 | /* If we don't know what to do, give the protocol a shot. */ | |
616 | ret = lmc_proto_ioctl (sc, ifr, cmd); | |
617 | break; | |
618 | } | |
619 | ||
620 | spin_unlock_irqrestore(&sc->lmc_lock, flags); /*fold01*/ | |
621 | ||
622 | lmc_trace(dev, "lmc_ioctl out"); | |
623 | ||
624 | return ret; | |
625 | } | |
626 | ||
627 | ||
628 | /* the watchdog process that cruises around */ | |
629 | static void lmc_watchdog (unsigned long data) /*fold00*/ | |
630 | { | |
631 | struct net_device *dev = (struct net_device *) data; | |
632 | lmc_softc_t *sc; | |
633 | int link_status; | |
634 | u_int32_t ticks; | |
635 | unsigned long flags; | |
636 | ||
637 | sc = dev->priv; | |
638 | ||
639 | lmc_trace(dev, "lmc_watchdog in"); | |
640 | ||
641 | spin_lock_irqsave(&sc->lmc_lock, flags); | |
642 | ||
643 | if(sc->check != 0xBEAFCAFE){ | |
32357988 | 644 | printk("LMC: Corrupt net_device struct, breaking out\n"); |
1da177e4 LT |
645 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
646 | return; | |
647 | } | |
648 | ||
649 | ||
650 | /* Make sure the tx jabber and rx watchdog are off, | |
651 | * and the transmit and receive processes are running. | |
652 | */ | |
653 | ||
654 | LMC_CSR_WRITE (sc, csr_15, 0x00000011); | |
655 | sc->lmc_cmdmode |= TULIP_CMD_TXRUN | TULIP_CMD_RXRUN; | |
656 | LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode); | |
657 | ||
658 | if (sc->lmc_ok == 0) | |
659 | goto kick_timer; | |
660 | ||
661 | LMC_EVENT_LOG(LMC_EVENT_WATCHDOG, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16)); | |
662 | ||
663 | /* --- begin time out check ----------------------------------- | |
664 | * check for a transmit interrupt timeout | |
665 | * Has the packet xmt vs xmt serviced threshold been exceeded */ | |
666 | if (sc->lmc_taint_tx == sc->lastlmc_taint_tx && | |
667 | sc->stats.tx_packets > sc->lasttx_packets && | |
668 | sc->tx_TimeoutInd == 0) | |
669 | { | |
670 | ||
671 | /* wait for the watchdog to come around again */ | |
672 | sc->tx_TimeoutInd = 1; | |
673 | } | |
674 | else if (sc->lmc_taint_tx == sc->lastlmc_taint_tx && | |
675 | sc->stats.tx_packets > sc->lasttx_packets && | |
676 | sc->tx_TimeoutInd) | |
677 | { | |
678 | ||
679 | LMC_EVENT_LOG(LMC_EVENT_XMTINTTMO, LMC_CSR_READ (sc, csr_status), 0); | |
680 | ||
681 | sc->tx_TimeoutDisplay = 1; | |
682 | sc->stats.tx_TimeoutCnt++; | |
683 | ||
684 | /* DEC chip is stuck, hit it with a RESET!!!! */ | |
685 | lmc_running_reset (dev); | |
686 | ||
687 | ||
688 | /* look at receive & transmit process state to make sure they are running */ | |
689 | LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); | |
690 | ||
691 | /* look at: DSR - 02 for Reg 16 | |
692 | * CTS - 08 | |
693 | * DCD - 10 | |
694 | * RI - 20 | |
695 | * for Reg 17 | |
696 | */ | |
697 | LMC_EVENT_LOG(LMC_EVENT_RESET2, lmc_mii_readreg (sc, 0, 16), lmc_mii_readreg (sc, 0, 17)); | |
698 | ||
699 | /* reset the transmit timeout detection flag */ | |
700 | sc->tx_TimeoutInd = 0; | |
701 | sc->lastlmc_taint_tx = sc->lmc_taint_tx; | |
702 | sc->lasttx_packets = sc->stats.tx_packets; | |
703 | } | |
704 | else | |
705 | { | |
706 | sc->tx_TimeoutInd = 0; | |
707 | sc->lastlmc_taint_tx = sc->lmc_taint_tx; | |
708 | sc->lasttx_packets = sc->stats.tx_packets; | |
709 | } | |
710 | ||
711 | /* --- end time out check ----------------------------------- */ | |
712 | ||
713 | ||
714 | link_status = sc->lmc_media->get_link_status (sc); | |
715 | ||
716 | /* | |
717 | * hardware level link lost, but the interface is marked as up. | |
718 | * Mark it as down. | |
719 | */ | |
720 | if ((link_status == 0) && (sc->last_link_status != 0)) { | |
721 | printk(KERN_WARNING "%s: hardware/physical link down\n", dev->name); | |
722 | sc->last_link_status = 0; | |
723 | /* lmc_reset (sc); Why reset??? The link can go down ok */ | |
724 | ||
725 | /* Inform the world that link has been lost */ | |
7d17c1d6 | 726 | netif_carrier_off(dev); |
1da177e4 LT |
727 | } |
728 | ||
729 | /* | |
730 | * hardware link is up, but the interface is marked as down. | |
731 | * Bring it back up again. | |
732 | */ | |
733 | if (link_status != 0 && sc->last_link_status == 0) { | |
734 | printk(KERN_WARNING "%s: hardware/physical link up\n", dev->name); | |
735 | sc->last_link_status = 1; | |
736 | /* lmc_reset (sc); Again why reset??? */ | |
737 | ||
738 | /* Inform the world that link protocol is back up. */ | |
7d17c1d6 | 739 | netif_carrier_on(dev); |
1da177e4 LT |
740 | |
741 | /* Now we have to tell the syncppp that we had an outage | |
742 | * and that it should deal. Calling sppp_reopen here | |
743 | * should do the trick, but we may have to call sppp_close | |
744 | * when the link goes down, and call sppp_open here. | |
745 | * Subject to more testing. | |
746 | * --bbraun | |
747 | */ | |
748 | ||
749 | lmc_proto_reopen(sc); | |
750 | ||
751 | } | |
752 | ||
753 | /* Call media specific watchdog functions */ | |
754 | sc->lmc_media->watchdog(sc); | |
755 | ||
756 | /* | |
757 | * Poke the transmitter to make sure it | |
758 | * never stops, even if we run out of mem | |
759 | */ | |
760 | LMC_CSR_WRITE(sc, csr_rxpoll, 0); | |
761 | ||
762 | /* | |
763 | * Check for code that failed | |
764 | * and try and fix it as appropriate | |
765 | */ | |
766 | if(sc->failed_ring == 1){ | |
767 | /* | |
768 | * Failed to setup the recv/xmit rin | |
769 | * Try again | |
770 | */ | |
771 | sc->failed_ring = 0; | |
772 | lmc_softreset(sc); | |
773 | } | |
774 | if(sc->failed_recv_alloc == 1){ | |
775 | /* | |
776 | * We failed to alloc mem in the | |
777 | * interrupt handler, go through the rings | |
778 | * and rebuild them | |
779 | */ | |
780 | sc->failed_recv_alloc = 0; | |
781 | lmc_softreset(sc); | |
782 | } | |
783 | ||
784 | ||
785 | /* | |
786 | * remember the timer value | |
787 | */ | |
788 | kick_timer: | |
789 | ||
790 | ticks = LMC_CSR_READ (sc, csr_gp_timer); | |
791 | LMC_CSR_WRITE (sc, csr_gp_timer, 0xffffffffUL); | |
792 | sc->ictl.ticks = 0x0000ffff - (ticks & 0x0000ffff); | |
793 | ||
794 | /* | |
795 | * restart this timer. | |
796 | */ | |
797 | sc->timer.expires = jiffies + (HZ); | |
798 | add_timer (&sc->timer); | |
799 | ||
800 | spin_unlock_irqrestore(&sc->lmc_lock, flags); | |
801 | ||
802 | lmc_trace(dev, "lmc_watchdog out"); | |
803 | ||
804 | } | |
805 | ||
806 | static void lmc_setup(struct net_device * const dev) /*fold00*/ | |
807 | { | |
808 | lmc_trace(dev, "lmc_setup in"); | |
809 | ||
810 | dev->type = ARPHRD_HDLC; | |
811 | dev->hard_start_xmit = lmc_start_xmit; | |
812 | dev->open = lmc_open; | |
813 | dev->stop = lmc_close; | |
814 | dev->get_stats = lmc_get_stats; | |
815 | dev->do_ioctl = lmc_ioctl; | |
816 | dev->tx_timeout = lmc_driver_timeout; | |
817 | dev->watchdog_timeo = (HZ); /* 1 second */ | |
818 | ||
819 | lmc_trace(dev, "lmc_setup out"); | |
820 | } | |
821 | ||
822 | ||
823 | static int __devinit lmc_init_one(struct pci_dev *pdev, | |
824 | const struct pci_device_id *ent) | |
825 | { | |
826 | struct net_device *dev; | |
827 | lmc_softc_t *sc; | |
828 | u16 subdevice; | |
829 | u_int16_t AdapModelNum; | |
830 | int err = -ENOMEM; | |
831 | static int cards_found; | |
832 | #ifndef GCOM | |
833 | /* We name by type not by vendor */ | |
834 | static const char lmcname[] = "hdlc%d"; | |
835 | #else | |
836 | /* | |
837 | * GCOM uses LMC vendor name so that clients can know which card | |
838 | * to attach to. | |
839 | */ | |
840 | static const char lmcname[] = "lmc%d"; | |
841 | #endif | |
842 | ||
843 | ||
844 | /* | |
845 | * Allocate our own device structure | |
846 | */ | |
847 | dev = alloc_netdev(sizeof(lmc_softc_t), lmcname, lmc_setup); | |
848 | if (!dev) { | |
849 | printk (KERN_ERR "lmc:alloc_netdev for device failed\n"); | |
850 | goto out1; | |
851 | } | |
852 | ||
853 | lmc_trace(dev, "lmc_init_one in"); | |
854 | ||
855 | err = pci_enable_device(pdev); | |
856 | if (err) { | |
857 | printk(KERN_ERR "lmc: pci enable failed:%d\n", err); | |
858 | goto out2; | |
859 | } | |
860 | ||
861 | if (pci_request_regions(pdev, "lmc")) { | |
862 | printk(KERN_ERR "lmc: pci_request_region failed\n"); | |
863 | err = -EIO; | |
864 | goto out3; | |
865 | } | |
866 | ||
867 | pci_set_drvdata(pdev, dev); | |
868 | ||
869 | if(lmc_first_load == 0){ | |
870 | printk(KERN_INFO "Lan Media Corporation WAN Driver Version %d.%d.%d\n", | |
871 | DRIVER_MAJOR_VERSION, DRIVER_MINOR_VERSION,DRIVER_SUB_VERSION); | |
872 | lmc_first_load = 1; | |
873 | } | |
874 | ||
875 | sc = dev->priv; | |
876 | sc->lmc_device = dev; | |
877 | sc->name = dev->name; | |
878 | ||
879 | /* Initialize the sppp layer */ | |
880 | /* An ioctl can cause a subsequent detach for raw frame interface */ | |
881 | sc->if_type = LMC_PPP; | |
882 | sc->check = 0xBEAFCAFE; | |
883 | dev->base_addr = pci_resource_start(pdev, 0); | |
884 | dev->irq = pdev->irq; | |
885 | ||
886 | SET_MODULE_OWNER(dev); | |
887 | SET_NETDEV_DEV(dev, &pdev->dev); | |
888 | ||
889 | /* | |
890 | * This will get the protocol layer ready and do any 1 time init's | |
891 | * Must have a valid sc and dev structure | |
892 | */ | |
893 | lmc_proto_init(sc); | |
894 | ||
895 | lmc_proto_attach(sc); | |
896 | ||
897 | /* | |
898 | * Why were we changing this??? | |
899 | dev->tx_queue_len = 100; | |
900 | */ | |
901 | ||
902 | /* Init the spin lock so can call it latter */ | |
903 | ||
904 | spin_lock_init(&sc->lmc_lock); | |
905 | pci_set_master(pdev); | |
906 | ||
907 | printk ("%s: detected at %lx, irq %d\n", dev->name, | |
908 | dev->base_addr, dev->irq); | |
909 | ||
910 | if (register_netdev (dev) != 0) { | |
911 | printk (KERN_ERR "%s: register_netdev failed.\n", dev->name); | |
912 | goto out4; | |
913 | } | |
914 | ||
915 | sc->lmc_cardtype = LMC_CARDTYPE_UNKNOWN; | |
916 | sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT; | |
917 | ||
918 | /* | |
919 | * | |
920 | * Check either the subvendor or the subdevice, some systems reverse | |
921 | * the setting in the bois, seems to be version and arch dependent? | |
922 | * Fix the error, exchange the two values | |
923 | */ | |
924 | if ((subdevice = pdev->subsystem_device) == PCI_VENDOR_ID_LMC) | |
925 | subdevice = pdev->subsystem_vendor; | |
926 | ||
927 | switch (subdevice) { | |
928 | case PCI_DEVICE_ID_LMC_HSSI: | |
929 | printk ("%s: LMC HSSI\n", dev->name); | |
930 | sc->lmc_cardtype = LMC_CARDTYPE_HSSI; | |
931 | sc->lmc_media = &lmc_hssi_media; | |
932 | break; | |
933 | case PCI_DEVICE_ID_LMC_DS3: | |
934 | printk ("%s: LMC DS3\n", dev->name); | |
935 | sc->lmc_cardtype = LMC_CARDTYPE_DS3; | |
936 | sc->lmc_media = &lmc_ds3_media; | |
937 | break; | |
938 | case PCI_DEVICE_ID_LMC_SSI: | |
939 | printk ("%s: LMC SSI\n", dev->name); | |
940 | sc->lmc_cardtype = LMC_CARDTYPE_SSI; | |
941 | sc->lmc_media = &lmc_ssi_media; | |
942 | break; | |
943 | case PCI_DEVICE_ID_LMC_T1: | |
944 | printk ("%s: LMC T1\n", dev->name); | |
945 | sc->lmc_cardtype = LMC_CARDTYPE_T1; | |
946 | sc->lmc_media = &lmc_t1_media; | |
947 | break; | |
948 | default: | |
949 | printk (KERN_WARNING "%s: LMC UNKOWN CARD!\n", dev->name); | |
950 | break; | |
951 | } | |
952 | ||
953 | lmc_initcsrs (sc, dev->base_addr, 8); | |
954 | ||
955 | lmc_gpio_mkinput (sc, 0xff); | |
956 | sc->lmc_gpio = 0; /* drive no signals yet */ | |
957 | ||
958 | sc->lmc_media->defaults (sc); | |
959 | ||
960 | sc->lmc_media->set_link_status (sc, LMC_LINK_UP); | |
961 | ||
962 | /* verify that the PCI Sub System ID matches the Adapter Model number | |
963 | * from the MII register | |
964 | */ | |
965 | AdapModelNum = (lmc_mii_readreg (sc, 0, 3) & 0x3f0) >> 4; | |
966 | ||
967 | if ((AdapModelNum == LMC_ADAP_T1 | |
968 | && subdevice == PCI_DEVICE_ID_LMC_T1) || /* detect LMC1200 */ | |
969 | (AdapModelNum == LMC_ADAP_SSI | |
970 | && subdevice == PCI_DEVICE_ID_LMC_SSI) || /* detect LMC1000 */ | |
971 | (AdapModelNum == LMC_ADAP_DS3 | |
972 | && subdevice == PCI_DEVICE_ID_LMC_DS3) || /* detect LMC5245 */ | |
973 | (AdapModelNum == LMC_ADAP_HSSI | |
974 | && subdevice == PCI_DEVICE_ID_LMC_HSSI)) | |
975 | { /* detect LMC5200 */ | |
976 | ||
977 | } | |
978 | else { | |
979 | printk ("%s: Model number (%d) miscompare for PCI Subsystem ID = 0x%04x\n", | |
980 | dev->name, AdapModelNum, subdevice); | |
981 | // return (NULL); | |
982 | } | |
983 | /* | |
984 | * reset clock | |
985 | */ | |
986 | LMC_CSR_WRITE (sc, csr_gp_timer, 0xFFFFFFFFUL); | |
987 | ||
988 | sc->board_idx = cards_found++; | |
989 | sc->stats.check = STATCHECK; | |
990 | sc->stats.version_size = (DRIVER_VERSION << 16) + | |
991 | sizeof (struct lmc_statistics); | |
992 | sc->stats.lmc_cardtype = sc->lmc_cardtype; | |
993 | ||
994 | sc->lmc_ok = 0; | |
995 | sc->last_link_status = 0; | |
996 | ||
997 | lmc_trace(dev, "lmc_init_one out"); | |
998 | return 0; | |
999 | ||
1000 | out4: | |
1001 | lmc_proto_detach(sc); | |
1002 | out3: | |
1003 | if (pdev) { | |
1004 | pci_release_regions(pdev); | |
1005 | pci_set_drvdata(pdev, NULL); | |
1006 | } | |
1007 | out2: | |
1008 | free_netdev(dev); | |
1009 | out1: | |
1010 | return err; | |
1011 | } | |
1012 | ||
1013 | /* | |
1014 | * Called from pci when removing module. | |
1015 | */ | |
1016 | static void __devexit lmc_remove_one (struct pci_dev *pdev) | |
1017 | { | |
1018 | struct net_device *dev = pci_get_drvdata(pdev); | |
1019 | ||
1020 | if (dev) { | |
1021 | lmc_softc_t *sc = dev->priv; | |
1022 | ||
1023 | printk("%s: removing...\n", dev->name); | |
1024 | lmc_proto_detach(sc); | |
1025 | unregister_netdev(dev); | |
1026 | free_netdev(dev); | |
1027 | pci_release_regions(pdev); | |
1028 | pci_disable_device(pdev); | |
1029 | pci_set_drvdata(pdev, NULL); | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | /* After this is called, packets can be sent. | |
1034 | * Does not initialize the addresses | |
1035 | */ | |
1036 | static int lmc_open (struct net_device *dev) /*fold00*/ | |
1037 | { | |
1038 | lmc_softc_t *sc = dev->priv; | |
1039 | ||
1040 | lmc_trace(dev, "lmc_open in"); | |
1041 | ||
1042 | lmc_led_on(sc, LMC_DS3_LED0); | |
1043 | ||
1044 | lmc_dec_reset (sc); | |
1045 | lmc_reset (sc); | |
1046 | ||
1047 | LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); | |
1048 | LMC_EVENT_LOG(LMC_EVENT_RESET2, | |
1049 | lmc_mii_readreg (sc, 0, 16), | |
1050 | lmc_mii_readreg (sc, 0, 17)); | |
1051 | ||
1052 | ||
1053 | if (sc->lmc_ok){ | |
1054 | lmc_trace(dev, "lmc_open lmc_ok out"); | |
1055 | return (0); | |
1056 | } | |
1057 | ||
1058 | lmc_softreset (sc); | |
1059 | ||
1060 | /* Since we have to use PCI bus, this should work on x86,alpha,ppc */ | |
1fb9df5d | 1061 | if (request_irq (dev->irq, &lmc_interrupt, IRQF_SHARED, dev->name, dev)){ |
1da177e4 LT |
1062 | printk(KERN_WARNING "%s: could not get irq: %d\n", dev->name, dev->irq); |
1063 | lmc_trace(dev, "lmc_open irq failed out"); | |
1064 | return -EAGAIN; | |
1065 | } | |
1066 | sc->got_irq = 1; | |
1067 | ||
1068 | /* Assert Terminal Active */ | |
1069 | sc->lmc_miireg16 |= LMC_MII16_LED_ALL; | |
1070 | sc->lmc_media->set_link_status (sc, LMC_LINK_UP); | |
1071 | ||
1072 | /* | |
1073 | * reset to last state. | |
1074 | */ | |
1075 | sc->lmc_media->set_status (sc, NULL); | |
1076 | ||
1077 | /* setup default bits to be used in tulip_desc_t transmit descriptor | |
1078 | * -baz */ | |
1079 | sc->TxDescriptControlInit = ( | |
1080 | LMC_TDES_INTERRUPT_ON_COMPLETION | |
1081 | | LMC_TDES_FIRST_SEGMENT | |
1082 | | LMC_TDES_LAST_SEGMENT | |
1083 | | LMC_TDES_SECOND_ADDR_CHAINED | |
1084 | | LMC_TDES_DISABLE_PADDING | |
1085 | ); | |
1086 | ||
1087 | if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16) { | |
1088 | /* disable 32 bit CRC generated by ASIC */ | |
1089 | sc->TxDescriptControlInit |= LMC_TDES_ADD_CRC_DISABLE; | |
1090 | } | |
1091 | sc->lmc_media->set_crc_length(sc, sc->ictl.crc_length); | |
1092 | /* Acknoledge the Terminal Active and light LEDs */ | |
1093 | ||
1094 | /* dev->flags |= IFF_UP; */ | |
1095 | ||
1096 | lmc_proto_open(sc); | |
1097 | ||
1098 | dev->do_ioctl = lmc_ioctl; | |
1099 | ||
1100 | ||
1101 | netif_start_queue(dev); | |
1102 | ||
1103 | sc->stats.tx_tbusy0++ ; | |
1104 | ||
1105 | /* | |
1106 | * select what interrupts we want to get | |
1107 | */ | |
1108 | sc->lmc_intrmask = 0; | |
1109 | /* Should be using the default interrupt mask defined in the .h file. */ | |
1110 | sc->lmc_intrmask |= (TULIP_STS_NORMALINTR | |
1111 | | TULIP_STS_RXINTR | |
1112 | | TULIP_STS_TXINTR | |
1113 | | TULIP_STS_ABNRMLINTR | |
1114 | | TULIP_STS_SYSERROR | |
1115 | | TULIP_STS_TXSTOPPED | |
1116 | | TULIP_STS_TXUNDERFLOW | |
1117 | | TULIP_STS_RXSTOPPED | |
1118 | | TULIP_STS_RXNOBUF | |
1119 | ); | |
1120 | LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask); | |
1121 | ||
1122 | sc->lmc_cmdmode |= TULIP_CMD_TXRUN; | |
1123 | sc->lmc_cmdmode |= TULIP_CMD_RXRUN; | |
1124 | LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode); | |
1125 | ||
1126 | sc->lmc_ok = 1; /* Run watchdog */ | |
1127 | ||
1128 | /* | |
1129 | * Set the if up now - pfb | |
1130 | */ | |
1131 | ||
1132 | sc->last_link_status = 1; | |
1133 | ||
1134 | /* | |
1135 | * Setup a timer for the watchdog on probe, and start it running. | |
1136 | * Since lmc_ok == 0, it will be a NOP for now. | |
1137 | */ | |
1138 | init_timer (&sc->timer); | |
1139 | sc->timer.expires = jiffies + HZ; | |
1140 | sc->timer.data = (unsigned long) dev; | |
1141 | sc->timer.function = &lmc_watchdog; | |
1142 | add_timer (&sc->timer); | |
1143 | ||
1144 | lmc_trace(dev, "lmc_open out"); | |
1145 | ||
1146 | return (0); | |
1147 | } | |
1148 | ||
1149 | /* Total reset to compensate for the AdTran DSU doing bad things | |
1150 | * under heavy load | |
1151 | */ | |
1152 | ||
1153 | static void lmc_running_reset (struct net_device *dev) /*fold00*/ | |
1154 | { | |
1155 | ||
1156 | lmc_softc_t *sc = (lmc_softc_t *) dev->priv; | |
1157 | ||
1158 | lmc_trace(dev, "lmc_runnig_reset in"); | |
1159 | ||
1160 | /* stop interrupts */ | |
1161 | /* Clear the interrupt mask */ | |
1162 | LMC_CSR_WRITE (sc, csr_intr, 0x00000000); | |
1163 | ||
1164 | lmc_dec_reset (sc); | |
1165 | lmc_reset (sc); | |
1166 | lmc_softreset (sc); | |
1167 | /* sc->lmc_miireg16 |= LMC_MII16_LED_ALL; */ | |
1168 | sc->lmc_media->set_link_status (sc, 1); | |
1169 | sc->lmc_media->set_status (sc, NULL); | |
1170 | ||
1da177e4 LT |
1171 | netif_wake_queue(dev); |
1172 | ||
1173 | sc->lmc_txfull = 0; | |
1174 | sc->stats.tx_tbusy0++ ; | |
1175 | ||
1176 | sc->lmc_intrmask = TULIP_DEFAULT_INTR_MASK; | |
1177 | LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask); | |
1178 | ||
1179 | sc->lmc_cmdmode |= (TULIP_CMD_TXRUN | TULIP_CMD_RXRUN); | |
1180 | LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode); | |
1181 | ||
1182 | lmc_trace(dev, "lmc_runnin_reset_out"); | |
1183 | } | |
1184 | ||
1185 | ||
1186 | /* This is what is called when you ifconfig down a device. | |
1187 | * This disables the timer for the watchdog and keepalives, | |
1188 | * and disables the irq for dev. | |
1189 | */ | |
1190 | static int lmc_close (struct net_device *dev) /*fold00*/ | |
1191 | { | |
1192 | /* not calling release_region() as we should */ | |
1193 | lmc_softc_t *sc; | |
1194 | ||
1195 | lmc_trace(dev, "lmc_close in"); | |
1196 | ||
1197 | sc = dev->priv; | |
1198 | sc->lmc_ok = 0; | |
1199 | sc->lmc_media->set_link_status (sc, 0); | |
1200 | del_timer (&sc->timer); | |
1201 | lmc_proto_close(sc); | |
1202 | lmc_ifdown (dev); | |
1203 | ||
1204 | lmc_trace(dev, "lmc_close out"); | |
1205 | ||
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | /* Ends the transfer of packets */ | |
1210 | /* When the interface goes down, this is called */ | |
1211 | static int lmc_ifdown (struct net_device *dev) /*fold00*/ | |
1212 | { | |
1213 | lmc_softc_t *sc = dev->priv; | |
1214 | u32 csr6; | |
1215 | int i; | |
1216 | ||
1217 | lmc_trace(dev, "lmc_ifdown in"); | |
1218 | ||
1219 | /* Don't let anything else go on right now */ | |
1220 | // dev->start = 0; | |
1221 | netif_stop_queue(dev); | |
1222 | sc->stats.tx_tbusy1++ ; | |
1223 | ||
1224 | /* stop interrupts */ | |
1225 | /* Clear the interrupt mask */ | |
1226 | LMC_CSR_WRITE (sc, csr_intr, 0x00000000); | |
1227 | ||
1228 | /* Stop Tx and Rx on the chip */ | |
1229 | csr6 = LMC_CSR_READ (sc, csr_command); | |
1230 | csr6 &= ~LMC_DEC_ST; /* Turn off the Transmission bit */ | |
1231 | csr6 &= ~LMC_DEC_SR; /* Turn off the Receive bit */ | |
1232 | LMC_CSR_WRITE (sc, csr_command, csr6); | |
1233 | ||
1da177e4 LT |
1234 | sc->stats.rx_missed_errors += |
1235 | LMC_CSR_READ (sc, csr_missed_frames) & 0xffff; | |
1236 | ||
1237 | /* release the interrupt */ | |
1238 | if(sc->got_irq == 1){ | |
1239 | free_irq (dev->irq, dev); | |
1240 | sc->got_irq = 0; | |
1241 | } | |
1242 | ||
1243 | /* free skbuffs in the Rx queue */ | |
1244 | for (i = 0; i < LMC_RXDESCS; i++) | |
1245 | { | |
1246 | struct sk_buff *skb = sc->lmc_rxq[i]; | |
1247 | sc->lmc_rxq[i] = NULL; | |
1248 | sc->lmc_rxring[i].status = 0; | |
1249 | sc->lmc_rxring[i].length = 0; | |
1250 | sc->lmc_rxring[i].buffer1 = 0xDEADBEEF; | |
1251 | if (skb != NULL) | |
1252 | dev_kfree_skb(skb); | |
1253 | sc->lmc_rxq[i] = NULL; | |
1254 | } | |
1255 | ||
1256 | for (i = 0; i < LMC_TXDESCS; i++) | |
1257 | { | |
1258 | if (sc->lmc_txq[i] != NULL) | |
1259 | dev_kfree_skb(sc->lmc_txq[i]); | |
1260 | sc->lmc_txq[i] = NULL; | |
1261 | } | |
1262 | ||
1263 | lmc_led_off (sc, LMC_MII16_LED_ALL); | |
1264 | ||
1265 | netif_wake_queue(dev); | |
1266 | sc->stats.tx_tbusy0++ ; | |
1267 | ||
1268 | lmc_trace(dev, "lmc_ifdown out"); | |
1269 | ||
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | /* Interrupt handling routine. This will take an incoming packet, or clean | |
1274 | * up after a trasmit. | |
1275 | */ | |
7d12e780 | 1276 | static irqreturn_t lmc_interrupt (int irq, void *dev_instance) /*fold00*/ |
1da177e4 LT |
1277 | { |
1278 | struct net_device *dev = (struct net_device *) dev_instance; | |
1279 | lmc_softc_t *sc; | |
1280 | u32 csr; | |
1281 | int i; | |
1282 | s32 stat; | |
1283 | unsigned int badtx; | |
1284 | u32 firstcsr; | |
1285 | int max_work = LMC_RXDESCS; | |
1286 | int handled = 0; | |
1287 | ||
1288 | lmc_trace(dev, "lmc_interrupt in"); | |
1289 | ||
1290 | sc = dev->priv; | |
1291 | ||
1292 | spin_lock(&sc->lmc_lock); | |
1293 | ||
1294 | /* | |
1295 | * Read the csr to find what interrupts we have (if any) | |
1296 | */ | |
1297 | csr = LMC_CSR_READ (sc, csr_status); | |
1298 | ||
1299 | /* | |
1300 | * Make sure this is our interrupt | |
1301 | */ | |
1302 | if ( ! (csr & sc->lmc_intrmask)) { | |
1303 | goto lmc_int_fail_out; | |
1304 | } | |
1305 | ||
1306 | firstcsr = csr; | |
1307 | ||
1308 | /* always go through this loop at least once */ | |
1309 | while (csr & sc->lmc_intrmask) { | |
1310 | handled = 1; | |
1311 | ||
1312 | /* | |
1313 | * Clear interrupt bits, we handle all case below | |
1314 | */ | |
1315 | LMC_CSR_WRITE (sc, csr_status, csr); | |
1316 | ||
1317 | /* | |
1318 | * One of | |
1319 | * - Transmit process timed out CSR5<1> | |
1320 | * - Transmit jabber timeout CSR5<3> | |
1321 | * - Transmit underflow CSR5<5> | |
1322 | * - Transmit Receiver buffer unavailable CSR5<7> | |
1323 | * - Receive process stopped CSR5<8> | |
1324 | * - Receive watchdog timeout CSR5<9> | |
1325 | * - Early transmit interrupt CSR5<10> | |
1326 | * | |
1327 | * Is this really right? Should we do a running reset for jabber? | |
1328 | * (being a WAN card and all) | |
1329 | */ | |
1330 | if (csr & TULIP_STS_ABNRMLINTR){ | |
1331 | lmc_running_reset (dev); | |
1332 | break; | |
1333 | } | |
1334 | ||
1335 | if (csr & TULIP_STS_RXINTR){ | |
1336 | lmc_trace(dev, "rx interrupt"); | |
1337 | lmc_rx (dev); | |
1338 | ||
1339 | } | |
1340 | if (csr & (TULIP_STS_TXINTR | TULIP_STS_TXNOBUF | TULIP_STS_TXSTOPPED)) { | |
1341 | ||
1342 | int n_compl = 0 ; | |
1343 | /* reset the transmit timeout detection flag -baz */ | |
1344 | sc->stats.tx_NoCompleteCnt = 0; | |
1345 | ||
1346 | badtx = sc->lmc_taint_tx; | |
1347 | i = badtx % LMC_TXDESCS; | |
1348 | ||
1349 | while ((badtx < sc->lmc_next_tx)) { | |
1350 | stat = sc->lmc_txring[i].status; | |
1351 | ||
1352 | LMC_EVENT_LOG (LMC_EVENT_XMTINT, stat, | |
1353 | sc->lmc_txring[i].length); | |
1354 | /* | |
1355 | * If bit 31 is 1 the tulip owns it break out of the loop | |
1356 | */ | |
1357 | if (stat & 0x80000000) | |
1358 | break; | |
1359 | ||
1360 | n_compl++ ; /* i.e., have an empty slot in ring */ | |
1361 | /* | |
1362 | * If we have no skbuff or have cleared it | |
1363 | * Already continue to the next buffer | |
1364 | */ | |
1365 | if (sc->lmc_txq[i] == NULL) | |
1366 | continue; | |
1367 | ||
1368 | /* | |
1369 | * Check the total error summary to look for any errors | |
1370 | */ | |
1371 | if (stat & 0x8000) { | |
1372 | sc->stats.tx_errors++; | |
1373 | if (stat & 0x4104) | |
1374 | sc->stats.tx_aborted_errors++; | |
1375 | if (stat & 0x0C00) | |
1376 | sc->stats.tx_carrier_errors++; | |
1377 | if (stat & 0x0200) | |
1378 | sc->stats.tx_window_errors++; | |
1379 | if (stat & 0x0002) | |
1380 | sc->stats.tx_fifo_errors++; | |
1381 | } | |
1382 | else { | |
1383 | ||
1384 | sc->stats.tx_bytes += sc->lmc_txring[i].length & 0x7ff; | |
1385 | ||
1386 | sc->stats.tx_packets++; | |
1387 | } | |
1388 | ||
1389 | // dev_kfree_skb(sc->lmc_txq[i]); | |
1390 | dev_kfree_skb_irq(sc->lmc_txq[i]); | |
1391 | sc->lmc_txq[i] = NULL; | |
1392 | ||
1393 | badtx++; | |
1394 | i = badtx % LMC_TXDESCS; | |
1395 | } | |
1396 | ||
1397 | if (sc->lmc_next_tx - badtx > LMC_TXDESCS) | |
1398 | { | |
1399 | printk ("%s: out of sync pointer\n", dev->name); | |
1400 | badtx += LMC_TXDESCS; | |
1401 | } | |
1402 | LMC_EVENT_LOG(LMC_EVENT_TBUSY0, n_compl, 0); | |
1403 | sc->lmc_txfull = 0; | |
1404 | netif_wake_queue(dev); | |
1405 | sc->stats.tx_tbusy0++ ; | |
1406 | ||
1407 | ||
1408 | #ifdef DEBUG | |
1409 | sc->stats.dirtyTx = badtx; | |
1410 | sc->stats.lmc_next_tx = sc->lmc_next_tx; | |
1411 | sc->stats.lmc_txfull = sc->lmc_txfull; | |
1412 | #endif | |
1413 | sc->lmc_taint_tx = badtx; | |
1414 | ||
1415 | /* | |
1416 | * Why was there a break here??? | |
1417 | */ | |
1418 | } /* end handle transmit interrupt */ | |
1419 | ||
1420 | if (csr & TULIP_STS_SYSERROR) { | |
1421 | u32 error; | |
1422 | printk (KERN_WARNING "%s: system bus error csr: %#8.8x\n", dev->name, csr); | |
1423 | error = csr>>23 & 0x7; | |
1424 | switch(error){ | |
1425 | case 0x000: | |
1426 | printk(KERN_WARNING "%s: Parity Fault (bad)\n", dev->name); | |
1427 | break; | |
1428 | case 0x001: | |
1429 | printk(KERN_WARNING "%s: Master Abort (naughty)\n", dev->name); | |
1430 | break; | |
1431 | case 0x010: | |
1432 | printk(KERN_WARNING "%s: Target Abort (not so naughty)\n", dev->name); | |
1433 | break; | |
1434 | default: | |
1435 | printk(KERN_WARNING "%s: This bus error code was supposed to be reserved!\n", dev->name); | |
1436 | } | |
1437 | lmc_dec_reset (sc); | |
1438 | lmc_reset (sc); | |
1439 | LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); | |
1440 | LMC_EVENT_LOG(LMC_EVENT_RESET2, | |
1441 | lmc_mii_readreg (sc, 0, 16), | |
1442 | lmc_mii_readreg (sc, 0, 17)); | |
1443 | ||
1444 | } | |
1445 | ||
1446 | ||
1447 | if(max_work-- <= 0) | |
1448 | break; | |
1449 | ||
1450 | /* | |
1451 | * Get current csr status to make sure | |
1452 | * we've cleared all interrupts | |
1453 | */ | |
1454 | csr = LMC_CSR_READ (sc, csr_status); | |
1455 | } /* end interrupt loop */ | |
1456 | LMC_EVENT_LOG(LMC_EVENT_INT, firstcsr, csr); | |
1457 | ||
1458 | lmc_int_fail_out: | |
1459 | ||
1460 | spin_unlock(&sc->lmc_lock); | |
1461 | ||
1462 | lmc_trace(dev, "lmc_interrupt out"); | |
1463 | return IRQ_RETVAL(handled); | |
1464 | } | |
1465 | ||
1466 | static int lmc_start_xmit (struct sk_buff *skb, struct net_device *dev) /*fold00*/ | |
1467 | { | |
1468 | lmc_softc_t *sc; | |
1469 | u32 flag; | |
1470 | int entry; | |
1471 | int ret = 0; | |
1472 | unsigned long flags; | |
1473 | ||
1474 | lmc_trace(dev, "lmc_start_xmit in"); | |
1475 | ||
1476 | sc = dev->priv; | |
1477 | ||
1478 | spin_lock_irqsave(&sc->lmc_lock, flags); | |
1479 | ||
1480 | /* normal path, tbusy known to be zero */ | |
1481 | ||
1482 | entry = sc->lmc_next_tx % LMC_TXDESCS; | |
1483 | ||
1484 | sc->lmc_txq[entry] = skb; | |
1485 | sc->lmc_txring[entry].buffer1 = virt_to_bus (skb->data); | |
1486 | ||
1487 | LMC_CONSOLE_LOG("xmit", skb->data, skb->len); | |
1488 | ||
1489 | #ifndef GCOM | |
1490 | /* If the queue is less than half full, don't interrupt */ | |
1491 | if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS / 2) | |
1492 | { | |
1493 | /* Do not interrupt on completion of this packet */ | |
1494 | flag = 0x60000000; | |
1495 | netif_wake_queue(dev); | |
1496 | } | |
1497 | else if (sc->lmc_next_tx - sc->lmc_taint_tx == LMC_TXDESCS / 2) | |
1498 | { | |
1499 | /* This generates an interrupt on completion of this packet */ | |
1500 | flag = 0xe0000000; | |
1501 | netif_wake_queue(dev); | |
1502 | } | |
1503 | else if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS - 1) | |
1504 | { | |
1505 | /* Do not interrupt on completion of this packet */ | |
1506 | flag = 0x60000000; | |
1507 | netif_wake_queue(dev); | |
1508 | } | |
1509 | else | |
1510 | { | |
1511 | /* This generates an interrupt on completion of this packet */ | |
1512 | flag = 0xe0000000; | |
1513 | sc->lmc_txfull = 1; | |
1514 | netif_stop_queue(dev); | |
1515 | } | |
1516 | #else | |
1517 | flag = LMC_TDES_INTERRUPT_ON_COMPLETION; | |
1518 | ||
1519 | if (sc->lmc_next_tx - sc->lmc_taint_tx >= LMC_TXDESCS - 1) | |
1520 | { /* ring full, go busy */ | |
1521 | sc->lmc_txfull = 1; | |
1522 | netif_stop_queue(dev); | |
1523 | sc->stats.tx_tbusy1++ ; | |
1524 | LMC_EVENT_LOG(LMC_EVENT_TBUSY1, entry, 0); | |
1525 | } | |
1526 | #endif | |
1527 | ||
1528 | ||
1529 | if (entry == LMC_TXDESCS - 1) /* last descriptor in ring */ | |
1530 | flag |= LMC_TDES_END_OF_RING; /* flag as such for Tulip */ | |
1531 | ||
1532 | /* don't pad small packets either */ | |
1533 | flag = sc->lmc_txring[entry].length = (skb->len) | flag | | |
1534 | sc->TxDescriptControlInit; | |
1535 | ||
1536 | /* set the transmit timeout flag to be checked in | |
1537 | * the watchdog timer handler. -baz | |
1538 | */ | |
1539 | ||
1540 | sc->stats.tx_NoCompleteCnt++; | |
1541 | sc->lmc_next_tx++; | |
1542 | ||
1543 | /* give ownership to the chip */ | |
1544 | LMC_EVENT_LOG(LMC_EVENT_XMT, flag, entry); | |
1545 | sc->lmc_txring[entry].status = 0x80000000; | |
1546 | ||
1547 | /* send now! */ | |
1548 | LMC_CSR_WRITE (sc, csr_txpoll, 0); | |
1549 | ||
1550 | dev->trans_start = jiffies; | |
1551 | ||
1552 | spin_unlock_irqrestore(&sc->lmc_lock, flags); | |
1553 | ||
1554 | lmc_trace(dev, "lmc_start_xmit_out"); | |
1555 | return ret; | |
1556 | } | |
1557 | ||
1558 | ||
1559 | static int lmc_rx (struct net_device *dev) /*fold00*/ | |
1560 | { | |
1561 | lmc_softc_t *sc; | |
1562 | int i; | |
1563 | int rx_work_limit = LMC_RXDESCS; | |
1564 | unsigned int next_rx; | |
1565 | int rxIntLoopCnt; /* debug -baz */ | |
1566 | int localLengthErrCnt = 0; | |
1567 | long stat; | |
1568 | struct sk_buff *skb, *nsb; | |
1569 | u16 len; | |
1570 | ||
1571 | lmc_trace(dev, "lmc_rx in"); | |
1572 | ||
1573 | sc = dev->priv; | |
1574 | ||
1575 | lmc_led_on(sc, LMC_DS3_LED3); | |
1576 | ||
1577 | rxIntLoopCnt = 0; /* debug -baz */ | |
1578 | ||
1579 | i = sc->lmc_next_rx % LMC_RXDESCS; | |
1580 | next_rx = sc->lmc_next_rx; | |
1581 | ||
1582 | while (((stat = sc->lmc_rxring[i].status) & LMC_RDES_OWN_BIT) != DESC_OWNED_BY_DC21X4) | |
1583 | { | |
1584 | rxIntLoopCnt++; /* debug -baz */ | |
1585 | len = ((stat & LMC_RDES_FRAME_LENGTH) >> RDES_FRAME_LENGTH_BIT_NUMBER); | |
1586 | if ((stat & 0x0300) != 0x0300) { /* Check first segment and last segment */ | |
1587 | if ((stat & 0x0000ffff) != 0x7fff) { | |
1588 | /* Oversized frame */ | |
1589 | sc->stats.rx_length_errors++; | |
1590 | goto skip_packet; | |
1591 | } | |
1592 | } | |
1593 | ||
1594 | if(stat & 0x00000008){ /* Catch a dribbling bit error */ | |
1595 | sc->stats.rx_errors++; | |
1596 | sc->stats.rx_frame_errors++; | |
1597 | goto skip_packet; | |
1598 | } | |
1599 | ||
1600 | ||
1601 | if(stat & 0x00000004){ /* Catch a CRC error by the Xilinx */ | |
1602 | sc->stats.rx_errors++; | |
1603 | sc->stats.rx_crc_errors++; | |
1604 | goto skip_packet; | |
1605 | } | |
1606 | ||
1607 | ||
1608 | if (len > LMC_PKT_BUF_SZ){ | |
1609 | sc->stats.rx_length_errors++; | |
1610 | localLengthErrCnt++; | |
1611 | goto skip_packet; | |
1612 | } | |
1613 | ||
1614 | if (len < sc->lmc_crcSize + 2) { | |
1615 | sc->stats.rx_length_errors++; | |
1616 | sc->stats.rx_SmallPktCnt++; | |
1617 | localLengthErrCnt++; | |
1618 | goto skip_packet; | |
1619 | } | |
1620 | ||
1621 | if(stat & 0x00004000){ | |
1622 | printk(KERN_WARNING "%s: Receiver descriptor error, receiver out of sync?\n", dev->name); | |
1623 | } | |
1624 | ||
1625 | len -= sc->lmc_crcSize; | |
1626 | ||
1627 | skb = sc->lmc_rxq[i]; | |
1628 | ||
1629 | /* | |
1630 | * We ran out of memory at some point | |
1631 | * just allocate an skb buff and continue. | |
1632 | */ | |
1633 | ||
1634 | if(skb == 0x0){ | |
1635 | nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2); | |
1636 | if (nsb) { | |
1637 | sc->lmc_rxq[i] = nsb; | |
1638 | nsb->dev = dev; | |
1639 | sc->lmc_rxring[i].buffer1 = virt_to_bus (nsb->tail); | |
1640 | } | |
1641 | sc->failed_recv_alloc = 1; | |
1642 | goto skip_packet; | |
1643 | } | |
1644 | ||
1645 | dev->last_rx = jiffies; | |
1646 | sc->stats.rx_packets++; | |
1647 | sc->stats.rx_bytes += len; | |
1648 | ||
1649 | LMC_CONSOLE_LOG("recv", skb->data, len); | |
1650 | ||
1651 | /* | |
1652 | * I'm not sure of the sanity of this | |
1653 | * Packets could be arriving at a constant | |
1654 | * 44.210mbits/sec and we're going to copy | |
1655 | * them into a new buffer?? | |
1656 | */ | |
1657 | ||
1658 | if(len > (LMC_MTU - (LMC_MTU>>2))){ /* len > LMC_MTU * 0.75 */ | |
1659 | /* | |
1660 | * If it's a large packet don't copy it just hand it up | |
1661 | */ | |
1662 | give_it_anyways: | |
1663 | ||
1664 | sc->lmc_rxq[i] = NULL; | |
1665 | sc->lmc_rxring[i].buffer1 = 0x0; | |
1666 | ||
1667 | skb_put (skb, len); | |
1668 | skb->protocol = lmc_proto_type(sc, skb); | |
1669 | skb->protocol = htons(ETH_P_WAN_PPP); | |
459a98ed | 1670 | skb_reset_mac_header(skb); |
1da177e4 LT |
1671 | // skb->nh.raw = skb->data; |
1672 | skb->dev = dev; | |
1673 | lmc_proto_netif(sc, skb); | |
1674 | ||
1675 | /* | |
1676 | * This skb will be destroyed by the upper layers, make a new one | |
1677 | */ | |
1678 | nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2); | |
1679 | if (nsb) { | |
1680 | sc->lmc_rxq[i] = nsb; | |
1681 | nsb->dev = dev; | |
1682 | sc->lmc_rxring[i].buffer1 = virt_to_bus (nsb->tail); | |
1683 | /* Transferred to 21140 below */ | |
1684 | } | |
1685 | else { | |
1686 | /* | |
1687 | * We've run out of memory, stop trying to allocate | |
1688 | * memory and exit the interrupt handler | |
1689 | * | |
1690 | * The chip may run out of receivers and stop | |
1691 | * in which care we'll try to allocate the buffer | |
1692 | * again. (once a second) | |
1693 | */ | |
1694 | sc->stats.rx_BuffAllocErr++; | |
1695 | LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len); | |
1696 | sc->failed_recv_alloc = 1; | |
1697 | goto skip_out_of_mem; | |
1698 | } | |
1699 | } | |
1700 | else { | |
1701 | nsb = dev_alloc_skb(len); | |
1702 | if(!nsb) { | |
1703 | goto give_it_anyways; | |
1704 | } | |
1705 | memcpy(skb_put(nsb, len), skb->data, len); | |
1706 | ||
1707 | nsb->protocol = lmc_proto_type(sc, skb); | |
459a98ed | 1708 | skb_reset_mac_header(nsb); |
1da177e4 LT |
1709 | // nsb->nh.raw = nsb->data; |
1710 | nsb->dev = dev; | |
1711 | lmc_proto_netif(sc, nsb); | |
1712 | } | |
1713 | ||
1714 | skip_packet: | |
1715 | LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len); | |
1716 | sc->lmc_rxring[i].status = DESC_OWNED_BY_DC21X4; | |
1717 | ||
1718 | sc->lmc_next_rx++; | |
1719 | i = sc->lmc_next_rx % LMC_RXDESCS; | |
1720 | rx_work_limit--; | |
1721 | if (rx_work_limit < 0) | |
1722 | break; | |
1723 | } | |
1724 | ||
1725 | /* detect condition for LMC1000 where DSU cable attaches and fills | |
1726 | * descriptors with bogus packets | |
1727 | * | |
1728 | if (localLengthErrCnt > LMC_RXDESCS - 3) { | |
1729 | sc->stats.rx_BadPktSurgeCnt++; | |
1730 | LMC_EVENT_LOG(LMC_EVENT_BADPKTSURGE, | |
1731 | localLengthErrCnt, | |
1732 | sc->stats.rx_BadPktSurgeCnt); | |
1733 | } */ | |
1734 | ||
1735 | /* save max count of receive descriptors serviced */ | |
1736 | if (rxIntLoopCnt > sc->stats.rxIntLoopCnt) { | |
1737 | sc->stats.rxIntLoopCnt = rxIntLoopCnt; /* debug -baz */ | |
1738 | } | |
1739 | ||
1740 | #ifdef DEBUG | |
1741 | if (rxIntLoopCnt == 0) | |
1742 | { | |
1743 | for (i = 0; i < LMC_RXDESCS; i++) | |
1744 | { | |
1745 | if ((sc->lmc_rxring[i].status & LMC_RDES_OWN_BIT) | |
1746 | != DESC_OWNED_BY_DC21X4) | |
1747 | { | |
1748 | rxIntLoopCnt++; | |
1749 | } | |
1750 | } | |
1751 | LMC_EVENT_LOG(LMC_EVENT_RCVEND, rxIntLoopCnt, 0); | |
1752 | } | |
1753 | #endif | |
1754 | ||
1755 | ||
1756 | lmc_led_off(sc, LMC_DS3_LED3); | |
1757 | ||
1758 | skip_out_of_mem: | |
1759 | ||
1760 | lmc_trace(dev, "lmc_rx out"); | |
1761 | ||
1762 | return 0; | |
1763 | } | |
1764 | ||
1765 | static struct net_device_stats *lmc_get_stats (struct net_device *dev) /*fold00*/ | |
1766 | { | |
1767 | lmc_softc_t *sc = dev->priv; | |
1768 | unsigned long flags; | |
1769 | ||
1770 | lmc_trace(dev, "lmc_get_stats in"); | |
1771 | ||
1772 | ||
1773 | spin_lock_irqsave(&sc->lmc_lock, flags); | |
1774 | ||
1775 | sc->stats.rx_missed_errors += LMC_CSR_READ (sc, csr_missed_frames) & 0xffff; | |
1776 | ||
1777 | spin_unlock_irqrestore(&sc->lmc_lock, flags); | |
1778 | ||
1779 | lmc_trace(dev, "lmc_get_stats out"); | |
1780 | ||
1781 | return (struct net_device_stats *) &sc->stats; | |
1782 | } | |
1783 | ||
1784 | static struct pci_driver lmc_driver = { | |
1785 | .name = "lmc", | |
1786 | .id_table = lmc_pci_tbl, | |
1787 | .probe = lmc_init_one, | |
1788 | .remove = __devexit_p(lmc_remove_one), | |
1789 | }; | |
1790 | ||
1791 | static int __init init_lmc(void) | |
1792 | { | |
29917620 | 1793 | return pci_register_driver(&lmc_driver); |
1da177e4 LT |
1794 | } |
1795 | ||
1796 | static void __exit exit_lmc(void) | |
1797 | { | |
1798 | pci_unregister_driver(&lmc_driver); | |
1799 | } | |
1800 | ||
1801 | module_init(init_lmc); | |
1802 | module_exit(exit_lmc); | |
1803 | ||
1804 | unsigned lmc_mii_readreg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno) /*fold00*/ | |
1805 | { | |
1806 | int i; | |
1807 | int command = (0xf6 << 10) | (devaddr << 5) | regno; | |
1808 | int retval = 0; | |
1809 | ||
1810 | lmc_trace(sc->lmc_device, "lmc_mii_readreg in"); | |
1811 | ||
1812 | LMC_MII_SYNC (sc); | |
1813 | ||
1814 | lmc_trace(sc->lmc_device, "lmc_mii_readreg: done sync"); | |
1815 | ||
1816 | for (i = 15; i >= 0; i--) | |
1817 | { | |
1818 | int dataval = (command & (1 << i)) ? 0x20000 : 0; | |
1819 | ||
1820 | LMC_CSR_WRITE (sc, csr_9, dataval); | |
1821 | lmc_delay (); | |
1822 | /* __SLOW_DOWN_IO; */ | |
1823 | LMC_CSR_WRITE (sc, csr_9, dataval | 0x10000); | |
1824 | lmc_delay (); | |
1825 | /* __SLOW_DOWN_IO; */ | |
1826 | } | |
1827 | ||
1828 | lmc_trace(sc->lmc_device, "lmc_mii_readreg: done1"); | |
1829 | ||
1830 | for (i = 19; i > 0; i--) | |
1831 | { | |
1832 | LMC_CSR_WRITE (sc, csr_9, 0x40000); | |
1833 | lmc_delay (); | |
1834 | /* __SLOW_DOWN_IO; */ | |
1835 | retval = (retval << 1) | ((LMC_CSR_READ (sc, csr_9) & 0x80000) ? 1 : 0); | |
1836 | LMC_CSR_WRITE (sc, csr_9, 0x40000 | 0x10000); | |
1837 | lmc_delay (); | |
1838 | /* __SLOW_DOWN_IO; */ | |
1839 | } | |
1840 | ||
1841 | lmc_trace(sc->lmc_device, "lmc_mii_readreg out"); | |
1842 | ||
1843 | return (retval >> 1) & 0xffff; | |
1844 | } | |
1845 | ||
1846 | void lmc_mii_writereg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno, unsigned data) /*fold00*/ | |
1847 | { | |
1848 | int i = 32; | |
1849 | int command = (0x5002 << 16) | (devaddr << 23) | (regno << 18) | data; | |
1850 | ||
1851 | lmc_trace(sc->lmc_device, "lmc_mii_writereg in"); | |
1852 | ||
1853 | LMC_MII_SYNC (sc); | |
1854 | ||
1855 | i = 31; | |
1856 | while (i >= 0) | |
1857 | { | |
1858 | int datav; | |
1859 | ||
1860 | if (command & (1 << i)) | |
1861 | datav = 0x20000; | |
1862 | else | |
1863 | datav = 0x00000; | |
1864 | ||
1865 | LMC_CSR_WRITE (sc, csr_9, datav); | |
1866 | lmc_delay (); | |
1867 | /* __SLOW_DOWN_IO; */ | |
1868 | LMC_CSR_WRITE (sc, csr_9, (datav | 0x10000)); | |
1869 | lmc_delay (); | |
1870 | /* __SLOW_DOWN_IO; */ | |
1871 | i--; | |
1872 | } | |
1873 | ||
1874 | i = 2; | |
1875 | while (i > 0) | |
1876 | { | |
1877 | LMC_CSR_WRITE (sc, csr_9, 0x40000); | |
1878 | lmc_delay (); | |
1879 | /* __SLOW_DOWN_IO; */ | |
1880 | LMC_CSR_WRITE (sc, csr_9, 0x50000); | |
1881 | lmc_delay (); | |
1882 | /* __SLOW_DOWN_IO; */ | |
1883 | i--; | |
1884 | } | |
1885 | ||
1886 | lmc_trace(sc->lmc_device, "lmc_mii_writereg out"); | |
1887 | } | |
1888 | ||
1889 | static void lmc_softreset (lmc_softc_t * const sc) /*fold00*/ | |
1890 | { | |
1891 | int i; | |
1892 | ||
1893 | lmc_trace(sc->lmc_device, "lmc_softreset in"); | |
1894 | ||
1895 | /* Initialize the receive rings and buffers. */ | |
1896 | sc->lmc_txfull = 0; | |
1897 | sc->lmc_next_rx = 0; | |
1898 | sc->lmc_next_tx = 0; | |
1899 | sc->lmc_taint_rx = 0; | |
1900 | sc->lmc_taint_tx = 0; | |
1901 | ||
1902 | /* | |
1903 | * Setup each one of the receiver buffers | |
1904 | * allocate an skbuff for each one, setup the descriptor table | |
1905 | * and point each buffer at the next one | |
1906 | */ | |
1907 | ||
1908 | for (i = 0; i < LMC_RXDESCS; i++) | |
1909 | { | |
1910 | struct sk_buff *skb; | |
1911 | ||
1912 | if (sc->lmc_rxq[i] == NULL) | |
1913 | { | |
1914 | skb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2); | |
1915 | if(skb == NULL){ | |
1916 | printk(KERN_WARNING "%s: Failed to allocate receiver ring, will try again\n", sc->name); | |
1917 | sc->failed_ring = 1; | |
1918 | break; | |
1919 | } | |
1920 | else{ | |
1921 | sc->lmc_rxq[i] = skb; | |
1922 | } | |
1923 | } | |
1924 | else | |
1925 | { | |
1926 | skb = sc->lmc_rxq[i]; | |
1927 | } | |
1928 | ||
1929 | skb->dev = sc->lmc_device; | |
1930 | ||
1931 | /* owned by 21140 */ | |
1932 | sc->lmc_rxring[i].status = 0x80000000; | |
1933 | ||
1934 | /* used to be PKT_BUF_SZ now uses skb since we lose some to head room */ | |
1935 | sc->lmc_rxring[i].length = skb->end - skb->data; | |
1936 | ||
1937 | /* use to be tail which is dumb since you're thinking why write | |
1938 | * to the end of the packj,et but since there's nothing there tail == data | |
1939 | */ | |
1940 | sc->lmc_rxring[i].buffer1 = virt_to_bus (skb->data); | |
1941 | ||
1942 | /* This is fair since the structure is static and we have the next address */ | |
1943 | sc->lmc_rxring[i].buffer2 = virt_to_bus (&sc->lmc_rxring[i + 1]); | |
1944 | ||
1945 | } | |
1946 | ||
1947 | /* | |
1948 | * Sets end of ring | |
1949 | */ | |
1950 | sc->lmc_rxring[i - 1].length |= 0x02000000; /* Set end of buffers flag */ | |
1951 | sc->lmc_rxring[i - 1].buffer2 = virt_to_bus (&sc->lmc_rxring[0]); /* Point back to the start */ | |
1952 | LMC_CSR_WRITE (sc, csr_rxlist, virt_to_bus (sc->lmc_rxring)); /* write base address */ | |
1953 | ||
1954 | ||
1955 | /* Initialize the transmit rings and buffers */ | |
1956 | for (i = 0; i < LMC_TXDESCS; i++) | |
1957 | { | |
1958 | if (sc->lmc_txq[i] != NULL){ /* have buffer */ | |
1959 | dev_kfree_skb(sc->lmc_txq[i]); /* free it */ | |
1960 | sc->stats.tx_dropped++; /* We just dropped a packet */ | |
1961 | } | |
1962 | sc->lmc_txq[i] = NULL; | |
1963 | sc->lmc_txring[i].status = 0x00000000; | |
1964 | sc->lmc_txring[i].buffer2 = virt_to_bus (&sc->lmc_txring[i + 1]); | |
1965 | } | |
1966 | sc->lmc_txring[i - 1].buffer2 = virt_to_bus (&sc->lmc_txring[0]); | |
1967 | LMC_CSR_WRITE (sc, csr_txlist, virt_to_bus (sc->lmc_txring)); | |
1968 | ||
1969 | lmc_trace(sc->lmc_device, "lmc_softreset out"); | |
1970 | } | |
1971 | ||
1972 | void lmc_gpio_mkinput(lmc_softc_t * const sc, u_int32_t bits) /*fold00*/ | |
1973 | { | |
1974 | lmc_trace(sc->lmc_device, "lmc_gpio_mkinput in"); | |
1975 | sc->lmc_gpio_io &= ~bits; | |
1976 | LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io)); | |
1977 | lmc_trace(sc->lmc_device, "lmc_gpio_mkinput out"); | |
1978 | } | |
1979 | ||
1980 | void lmc_gpio_mkoutput(lmc_softc_t * const sc, u_int32_t bits) /*fold00*/ | |
1981 | { | |
1982 | lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput in"); | |
1983 | sc->lmc_gpio_io |= bits; | |
1984 | LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io)); | |
1985 | lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput out"); | |
1986 | } | |
1987 | ||
1988 | void lmc_led_on(lmc_softc_t * const sc, u_int32_t led) /*fold00*/ | |
1989 | { | |
1990 | lmc_trace(sc->lmc_device, "lmc_led_on in"); | |
1991 | if((~sc->lmc_miireg16) & led){ /* Already on! */ | |
1992 | lmc_trace(sc->lmc_device, "lmc_led_on aon out"); | |
1993 | return; | |
1994 | } | |
1995 | ||
1996 | sc->lmc_miireg16 &= ~led; | |
1997 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); | |
1998 | lmc_trace(sc->lmc_device, "lmc_led_on out"); | |
1999 | } | |
2000 | ||
2001 | void lmc_led_off(lmc_softc_t * const sc, u_int32_t led) /*fold00*/ | |
2002 | { | |
2003 | lmc_trace(sc->lmc_device, "lmc_led_off in"); | |
2004 | if(sc->lmc_miireg16 & led){ /* Already set don't do anything */ | |
2005 | lmc_trace(sc->lmc_device, "lmc_led_off aoff out"); | |
2006 | return; | |
2007 | } | |
2008 | ||
2009 | sc->lmc_miireg16 |= led; | |
2010 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); | |
2011 | lmc_trace(sc->lmc_device, "lmc_led_off out"); | |
2012 | } | |
2013 | ||
2014 | static void lmc_reset(lmc_softc_t * const sc) /*fold00*/ | |
2015 | { | |
2016 | lmc_trace(sc->lmc_device, "lmc_reset in"); | |
2017 | sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET; | |
2018 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); | |
2019 | ||
2020 | sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET; | |
2021 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); | |
2022 | ||
2023 | /* | |
2024 | * make some of the GPIO pins be outputs | |
2025 | */ | |
2026 | lmc_gpio_mkoutput(sc, LMC_GEP_RESET); | |
2027 | ||
2028 | /* | |
2029 | * RESET low to force state reset. This also forces | |
2030 | * the transmitter clock to be internal, but we expect to reset | |
2031 | * that later anyway. | |
2032 | */ | |
2033 | sc->lmc_gpio &= ~(LMC_GEP_RESET); | |
2034 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); | |
2035 | ||
2036 | /* | |
2037 | * hold for more than 10 microseconds | |
2038 | */ | |
2039 | udelay(50); | |
2040 | ||
2041 | /* | |
2042 | * stop driving Xilinx-related signals | |
2043 | */ | |
2044 | lmc_gpio_mkinput(sc, LMC_GEP_RESET); | |
2045 | ||
2046 | /* | |
2047 | * Call media specific init routine | |
2048 | */ | |
2049 | sc->lmc_media->init(sc); | |
2050 | ||
2051 | sc->stats.resetCount++; | |
2052 | lmc_trace(sc->lmc_device, "lmc_reset out"); | |
2053 | } | |
2054 | ||
2055 | static void lmc_dec_reset(lmc_softc_t * const sc) /*fold00*/ | |
2056 | { | |
2057 | u_int32_t val; | |
2058 | lmc_trace(sc->lmc_device, "lmc_dec_reset in"); | |
2059 | ||
2060 | /* | |
2061 | * disable all interrupts | |
2062 | */ | |
2063 | sc->lmc_intrmask = 0; | |
2064 | LMC_CSR_WRITE(sc, csr_intr, sc->lmc_intrmask); | |
2065 | ||
2066 | /* | |
2067 | * Reset the chip with a software reset command. | |
2068 | * Wait 10 microseconds (actually 50 PCI cycles but at | |
2069 | * 33MHz that comes to two microseconds but wait a | |
2070 | * bit longer anyways) | |
2071 | */ | |
2072 | LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET); | |
2073 | udelay(25); | |
2074 | #ifdef __sparc__ | |
2075 | sc->lmc_busmode = LMC_CSR_READ(sc, csr_busmode); | |
2076 | sc->lmc_busmode = 0x00100000; | |
2077 | sc->lmc_busmode &= ~TULIP_BUSMODE_SWRESET; | |
2078 | LMC_CSR_WRITE(sc, csr_busmode, sc->lmc_busmode); | |
2079 | #endif | |
2080 | sc->lmc_cmdmode = LMC_CSR_READ(sc, csr_command); | |
2081 | ||
2082 | /* | |
2083 | * We want: | |
2084 | * no ethernet address in frames we write | |
2085 | * disable padding (txdesc, padding disable) | |
2086 | * ignore runt frames (rdes0 bit 15) | |
2087 | * no receiver watchdog or transmitter jabber timer | |
2088 | * (csr15 bit 0,14 == 1) | |
2089 | * if using 16-bit CRC, turn off CRC (trans desc, crc disable) | |
2090 | */ | |
2091 | ||
2092 | sc->lmc_cmdmode |= ( TULIP_CMD_PROMISCUOUS | |
2093 | | TULIP_CMD_FULLDUPLEX | |
2094 | | TULIP_CMD_PASSBADPKT | |
2095 | | TULIP_CMD_NOHEARTBEAT | |
2096 | | TULIP_CMD_PORTSELECT | |
2097 | | TULIP_CMD_RECEIVEALL | |
2098 | | TULIP_CMD_MUSTBEONE | |
2099 | ); | |
2100 | sc->lmc_cmdmode &= ~( TULIP_CMD_OPERMODE | |
2101 | | TULIP_CMD_THRESHOLDCTL | |
2102 | | TULIP_CMD_STOREFWD | |
2103 | | TULIP_CMD_TXTHRSHLDCTL | |
2104 | ); | |
2105 | ||
2106 | LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode); | |
2107 | ||
2108 | /* | |
2109 | * disable receiver watchdog and transmit jabber | |
2110 | */ | |
2111 | val = LMC_CSR_READ(sc, csr_sia_general); | |
2112 | val |= (TULIP_WATCHDOG_TXDISABLE | TULIP_WATCHDOG_RXDISABLE); | |
2113 | LMC_CSR_WRITE(sc, csr_sia_general, val); | |
2114 | ||
2115 | lmc_trace(sc->lmc_device, "lmc_dec_reset out"); | |
2116 | } | |
2117 | ||
2118 | static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, /*fold00*/ | |
2119 | size_t csr_size) | |
2120 | { | |
2121 | lmc_trace(sc->lmc_device, "lmc_initcsrs in"); | |
2122 | sc->lmc_csrs.csr_busmode = csr_base + 0 * csr_size; | |
2123 | sc->lmc_csrs.csr_txpoll = csr_base + 1 * csr_size; | |
2124 | sc->lmc_csrs.csr_rxpoll = csr_base + 2 * csr_size; | |
2125 | sc->lmc_csrs.csr_rxlist = csr_base + 3 * csr_size; | |
2126 | sc->lmc_csrs.csr_txlist = csr_base + 4 * csr_size; | |
2127 | sc->lmc_csrs.csr_status = csr_base + 5 * csr_size; | |
2128 | sc->lmc_csrs.csr_command = csr_base + 6 * csr_size; | |
2129 | sc->lmc_csrs.csr_intr = csr_base + 7 * csr_size; | |
2130 | sc->lmc_csrs.csr_missed_frames = csr_base + 8 * csr_size; | |
2131 | sc->lmc_csrs.csr_9 = csr_base + 9 * csr_size; | |
2132 | sc->lmc_csrs.csr_10 = csr_base + 10 * csr_size; | |
2133 | sc->lmc_csrs.csr_11 = csr_base + 11 * csr_size; | |
2134 | sc->lmc_csrs.csr_12 = csr_base + 12 * csr_size; | |
2135 | sc->lmc_csrs.csr_13 = csr_base + 13 * csr_size; | |
2136 | sc->lmc_csrs.csr_14 = csr_base + 14 * csr_size; | |
2137 | sc->lmc_csrs.csr_15 = csr_base + 15 * csr_size; | |
2138 | lmc_trace(sc->lmc_device, "lmc_initcsrs out"); | |
2139 | } | |
2140 | ||
2141 | static void lmc_driver_timeout(struct net_device *dev) { /*fold00*/ | |
2142 | lmc_softc_t *sc; | |
2143 | u32 csr6; | |
2144 | unsigned long flags; | |
2145 | ||
2146 | lmc_trace(dev, "lmc_driver_timeout in"); | |
2147 | ||
2148 | sc = dev->priv; | |
2149 | ||
2150 | spin_lock_irqsave(&sc->lmc_lock, flags); | |
2151 | ||
2152 | printk("%s: Xmitter busy|\n", dev->name); | |
2153 | ||
2154 | sc->stats.tx_tbusy_calls++ ; | |
2155 | if (jiffies - dev->trans_start < TX_TIMEOUT) { | |
2156 | goto bug_out; | |
2157 | } | |
2158 | ||
2159 | /* | |
2160 | * Chip seems to have locked up | |
2161 | * Reset it | |
2162 | * This whips out all our decriptor | |
2163 | * table and starts from scartch | |
2164 | */ | |
2165 | ||
2166 | LMC_EVENT_LOG(LMC_EVENT_XMTPRCTMO, | |
2167 | LMC_CSR_READ (sc, csr_status), | |
2168 | sc->stats.tx_ProcTimeout); | |
2169 | ||
2170 | lmc_running_reset (dev); | |
2171 | ||
2172 | LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); | |
2173 | LMC_EVENT_LOG(LMC_EVENT_RESET2, | |
2174 | lmc_mii_readreg (sc, 0, 16), | |
2175 | lmc_mii_readreg (sc, 0, 17)); | |
2176 | ||
2177 | /* restart the tx processes */ | |
2178 | csr6 = LMC_CSR_READ (sc, csr_command); | |
2179 | LMC_CSR_WRITE (sc, csr_command, csr6 | 0x0002); | |
2180 | LMC_CSR_WRITE (sc, csr_command, csr6 | 0x2002); | |
2181 | ||
2182 | /* immediate transmit */ | |
2183 | LMC_CSR_WRITE (sc, csr_txpoll, 0); | |
2184 | ||
2185 | sc->stats.tx_errors++; | |
2186 | sc->stats.tx_ProcTimeout++; /* -baz */ | |
2187 | ||
2188 | dev->trans_start = jiffies; | |
2189 | ||
2190 | bug_out: | |
2191 | ||
2192 | spin_unlock_irqrestore(&sc->lmc_lock, flags); | |
2193 | ||
2194 | lmc_trace(dev, "lmc_driver_timout out"); | |
2195 | ||
2196 | ||
2197 | } |