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WIP FPC-III support
[linux/fpc-iii.git] / drivers / isdn / hardware / mISDN / w6692.c
blobf3b8db7b48fe08c86b11f37fb50554b5831694cb
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * w6692.c mISDN driver for Winbond w6692 based cards
4 *
5 * Author Karsten Keil <kkeil@suse.de>
6 * based on the w6692 I4L driver from Petr Novak <petr.novak@i.cz>
7 *
8 * Copyright 2009 by Karsten Keil <keil@isdn4linux.de>
9 */
10
11 #include <linux/interrupt.h>
12 #include <linux/module.h>
13 #include <linux/pci.h>
14 #include <linux/delay.h>
15 #include <linux/mISDNhw.h>
16 #include <linux/slab.h>
17 #include "w6692.h"
18
19 #define W6692_REV "2.0"
20
21 #define DBUSY_TIMER_VALUE 80
22
23 enum {
24 W6692_ASUS,
25 W6692_WINBOND,
26 W6692_USR
27 };
28
29 /* private data in the PCI devices list */
30 struct w6692map {
31 u_int subtype;
32 char *name;
33 };
34
35 static const struct w6692map w6692_map[] =
36 {
37 {W6692_ASUS, "Dynalink/AsusCom IS64PH"},
38 {W6692_WINBOND, "Winbond W6692"},
39 {W6692_USR, "USR W6692"}
40 };
41
42 #define PCI_DEVICE_ID_USR_6692 0x3409
43
44 struct w6692_ch {
45 struct bchannel bch;
46 u32 addr;
47 struct timer_list timer;
48 u8 b_mode;
49 };
50
51 struct w6692_hw {
52 struct list_head list;
53 struct pci_dev *pdev;
54 char name[MISDN_MAX_IDLEN];
55 u32 irq;
56 u32 irqcnt;
57 u32 addr;
58 u32 fmask; /* feature mask - bit set per card nr */
59 int subtype;
60 spinlock_t lock; /* hw lock */
61 u8 imask;
62 u8 pctl;
63 u8 xaddr;
64 u8 xdata;
65 u8 state;
66 struct w6692_ch bc[2];
67 struct dchannel dch;
68 char log[64];
69 };
70
71 static LIST_HEAD(Cards);
72 static DEFINE_RWLOCK(card_lock); /* protect Cards */
73
74 static int w6692_cnt;
75 static int debug;
76 static u32 led;
77 static u32 pots;
78
79 static void
80 _set_debug(struct w6692_hw *card)
81 {
82 card->dch.debug = debug;
83 card->bc[0].bch.debug = debug;
84 card->bc[1].bch.debug = debug;
85 }
86
87 static int
88 set_debug(const char *val, const struct kernel_param *kp)
89 {
90 int ret;
91 struct w6692_hw *card;
92
93 ret = param_set_uint(val, kp);
94 if (!ret) {
95 read_lock(&card_lock);
96 list_for_each_entry(card, &Cards, list)
97 _set_debug(card);
98 read_unlock(&card_lock);
99 }
100 return ret;
101 }
102
103 MODULE_AUTHOR("Karsten Keil");
104 MODULE_LICENSE("GPL v2");
105 MODULE_VERSION(W6692_REV);
106 module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
107 MODULE_PARM_DESC(debug, "W6692 debug mask");
108 module_param(led, uint, S_IRUGO | S_IWUSR);
109 MODULE_PARM_DESC(led, "W6692 LED support bitmask (one bit per card)");
110 module_param(pots, uint, S_IRUGO | S_IWUSR);
111 MODULE_PARM_DESC(pots, "W6692 POTS support bitmask (one bit per card)");
112
113 static inline u8
114 ReadW6692(struct w6692_hw *card, u8 offset)
115 {
116 return inb(card->addr + offset);
117 }
118
119 static inline void
120 WriteW6692(struct w6692_hw *card, u8 offset, u8 value)
121 {
122 outb(value, card->addr + offset);
123 }
124
125 static inline u8
126 ReadW6692B(struct w6692_ch *bc, u8 offset)
127 {
128 return inb(bc->addr + offset);
129 }
130
131 static inline void
132 WriteW6692B(struct w6692_ch *bc, u8 offset, u8 value)
133 {
134 outb(value, bc->addr + offset);
135 }
136
137 static void
138 enable_hwirq(struct w6692_hw *card)
139 {
140 WriteW6692(card, W_IMASK, card->imask);
141 }
142
143 static void
144 disable_hwirq(struct w6692_hw *card)
145 {
146 WriteW6692(card, W_IMASK, 0xff);
147 }
148
149 static const char *W6692Ver[] = {"V00", "V01", "V10", "V11"};
150
151 static void
152 W6692Version(struct w6692_hw *card)
153 {
154 int val;
155
156 val = ReadW6692(card, W_D_RBCH);
157 pr_notice("%s: Winbond W6692 version: %s\n", card->name,
158 W6692Ver[(val >> 6) & 3]);
159 }
160
161 static void
162 w6692_led_handler(struct w6692_hw *card, int on)
163 {
164 if ((!(card->fmask & led)) || card->subtype == W6692_USR)
165 return;
166 if (on) {
167 card->xdata &= 0xfb; /* LED ON */
168 WriteW6692(card, W_XDATA, card->xdata);
169 } else {
170 card->xdata |= 0x04; /* LED OFF */
171 WriteW6692(card, W_XDATA, card->xdata);
172 }
173 }
174
175 static void
176 ph_command(struct w6692_hw *card, u8 cmd)
177 {
178 pr_debug("%s: ph_command %x\n", card->name, cmd);
179 WriteW6692(card, W_CIX, cmd);
180 }
181
182 static void
183 W6692_new_ph(struct w6692_hw *card)
184 {
185 if (card->state == W_L1CMD_RST)
186 ph_command(card, W_L1CMD_DRC);
187 schedule_event(&card->dch, FLG_PHCHANGE);
188 }
189
190 static void
191 W6692_ph_bh(struct dchannel *dch)
192 {
193 struct w6692_hw *card = dch->hw;
194
195 switch (card->state) {
196 case W_L1CMD_RST:
197 dch->state = 0;
198 l1_event(dch->l1, HW_RESET_IND);
199 break;
200 case W_L1IND_CD:
201 dch->state = 3;
202 l1_event(dch->l1, HW_DEACT_CNF);
203 break;
204 case W_L1IND_DRD:
205 dch->state = 3;
206 l1_event(dch->l1, HW_DEACT_IND);
207 break;
208 case W_L1IND_CE:
209 dch->state = 4;
210 l1_event(dch->l1, HW_POWERUP_IND);
211 break;
212 case W_L1IND_LD:
213 if (dch->state <= 5) {
214 dch->state = 5;
215 l1_event(dch->l1, ANYSIGNAL);
216 } else {
217 dch->state = 8;
218 l1_event(dch->l1, LOSTFRAMING);
219 }
220 break;
221 case W_L1IND_ARD:
222 dch->state = 6;
223 l1_event(dch->l1, INFO2);
224 break;
225 case W_L1IND_AI8:
226 dch->state = 7;
227 l1_event(dch->l1, INFO4_P8);
228 break;
229 case W_L1IND_AI10:
230 dch->state = 7;
231 l1_event(dch->l1, INFO4_P10);
232 break;
233 default:
234 pr_debug("%s: TE unknown state %02x dch state %02x\n",
235 card->name, card->state, dch->state);
236 break;
237 }
238 pr_debug("%s: TE newstate %02x\n", card->name, dch->state);
239 }
240
241 static void
242 W6692_empty_Dfifo(struct w6692_hw *card, int count)
243 {
244 struct dchannel *dch = &card->dch;
245 u8 *ptr;
246
247 pr_debug("%s: empty_Dfifo %d\n", card->name, count);
248 if (!dch->rx_skb) {
249 dch->rx_skb = mI_alloc_skb(card->dch.maxlen, GFP_ATOMIC);
250 if (!dch->rx_skb) {
251 pr_info("%s: D receive out of memory\n", card->name);
252 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
253 return;
254 }
255 }
256 if ((dch->rx_skb->len + count) >= dch->maxlen) {
257 pr_debug("%s: empty_Dfifo overrun %d\n", card->name,
258 dch->rx_skb->len + count);
259 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
260 return;
261 }
262 ptr = skb_put(dch->rx_skb, count);
263 insb(card->addr + W_D_RFIFO, ptr, count);
264 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
265 if (debug & DEBUG_HW_DFIFO) {
266 snprintf(card->log, 63, "D-recv %s %d ",
267 card->name, count);
268 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
269 }
270 }
271
272 static void
273 W6692_fill_Dfifo(struct w6692_hw *card)
274 {
275 struct dchannel *dch = &card->dch;
276 int count;
277 u8 *ptr;
278 u8 cmd = W_D_CMDR_XMS;
279
280 pr_debug("%s: fill_Dfifo\n", card->name);
281 if (!dch->tx_skb)
282 return;
283 count = dch->tx_skb->len - dch->tx_idx;
284 if (count <= 0)
285 return;
286 if (count > W_D_FIFO_THRESH)
287 count = W_D_FIFO_THRESH;
288 else
289 cmd |= W_D_CMDR_XME;
290 ptr = dch->tx_skb->data + dch->tx_idx;
291 dch->tx_idx += count;
292 outsb(card->addr + W_D_XFIFO, ptr, count);
293 WriteW6692(card, W_D_CMDR, cmd);
294 if (test_and_set_bit(FLG_BUSY_TIMER, &dch->Flags)) {
295 pr_debug("%s: fill_Dfifo dbusytimer running\n", card->name);
296 del_timer(&dch->timer);
297 }
298 dch->timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000);
299 add_timer(&dch->timer);
300 if (debug & DEBUG_HW_DFIFO) {
301 snprintf(card->log, 63, "D-send %s %d ",
302 card->name, count);
303 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
304 }
305 }
306
307 static void
308 d_retransmit(struct w6692_hw *card)
309 {
310 struct dchannel *dch = &card->dch;
311
312 if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
313 del_timer(&dch->timer);
314 #ifdef FIXME
315 if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags))
316 dchannel_sched_event(dch, D_CLEARBUSY);
317 #endif
318 if (test_bit(FLG_TX_BUSY, &dch->Flags)) {
319 /* Restart frame */
320 dch->tx_idx = 0;
321 W6692_fill_Dfifo(card);
322 } else if (dch->tx_skb) { /* should not happen */
323 pr_info("%s: %s without TX_BUSY\n", card->name, __func__);
324 test_and_set_bit(FLG_TX_BUSY, &dch->Flags);
325 dch->tx_idx = 0;
326 W6692_fill_Dfifo(card);
327 } else {
328 pr_info("%s: XDU no TX_BUSY\n", card->name);
329 if (get_next_dframe(dch))
330 W6692_fill_Dfifo(card);
331 }
332 }
333
334 static void
335 handle_rxD(struct w6692_hw *card) {
336 u8 stat;
337 int count;
338
339 stat = ReadW6692(card, W_D_RSTA);
340 if (stat & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) {
341 if (stat & W_D_RSTA_RDOV) {
342 pr_debug("%s: D-channel RDOV\n", card->name);
343 #ifdef ERROR_STATISTIC
344 card->dch.err_rx++;
345 #endif
346 }
347 if (stat & W_D_RSTA_CRCE) {
348 pr_debug("%s: D-channel CRC error\n", card->name);
349 #ifdef ERROR_STATISTIC
350 card->dch.err_crc++;
351 #endif
352 }
353 if (stat & W_D_RSTA_RMB) {
354 pr_debug("%s: D-channel ABORT\n", card->name);
355 #ifdef ERROR_STATISTIC
356 card->dch.err_rx++;
357 #endif
358 }
359 dev_kfree_skb(card->dch.rx_skb);
360 card->dch.rx_skb = NULL;
361 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST);
362 } else {
363 count = ReadW6692(card, W_D_RBCL) & (W_D_FIFO_THRESH - 1);
364 if (count == 0)
365 count = W_D_FIFO_THRESH;
366 W6692_empty_Dfifo(card, count);
367 recv_Dchannel(&card->dch);
368 }
369 }
370
371 static void
372 handle_txD(struct w6692_hw *card) {
373 if (test_and_clear_bit(FLG_BUSY_TIMER, &card->dch.Flags))
374 del_timer(&card->dch.timer);
375 if (card->dch.tx_skb && card->dch.tx_idx < card->dch.tx_skb->len) {
376 W6692_fill_Dfifo(card);
377 } else {
378 dev_kfree_skb(card->dch.tx_skb);
379 if (get_next_dframe(&card->dch))
380 W6692_fill_Dfifo(card);
381 }
382 }
383
384 static void
385 handle_statusD(struct w6692_hw *card)
386 {
387 struct dchannel *dch = &card->dch;
388 u8 exval, v1, cir;
389
390 exval = ReadW6692(card, W_D_EXIR);
391
392 pr_debug("%s: D_EXIR %02x\n", card->name, exval);
393 if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) {
394 /* Transmit underrun/collision */
395 pr_debug("%s: D-channel underrun/collision\n", card->name);
396 #ifdef ERROR_STATISTIC
397 dch->err_tx++;
398 #endif
399 d_retransmit(card);
400 }
401 if (exval & W_D_EXI_RDOV) { /* RDOV */
402 pr_debug("%s: D-channel RDOV\n", card->name);
403 WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST);
404 }
405 if (exval & W_D_EXI_TIN2) /* TIN2 - never */
406 pr_debug("%s: spurious TIN2 interrupt\n", card->name);
407 if (exval & W_D_EXI_MOC) { /* MOC - not supported */
408 v1 = ReadW6692(card, W_MOSR);
409 pr_debug("%s: spurious MOC interrupt MOSR %02x\n",
410 card->name, v1);
411 }
412 if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */
413 cir = ReadW6692(card, W_CIR);
414 pr_debug("%s: ISC CIR %02X\n", card->name, cir);
415 if (cir & W_CIR_ICC) {
416 v1 = cir & W_CIR_COD_MASK;
417 pr_debug("%s: ph_state_change %x -> %x\n", card->name,
418 dch->state, v1);
419 card->state = v1;
420 if (card->fmask & led) {
421 switch (v1) {
422 case W_L1IND_AI8:
423 case W_L1IND_AI10:
424 w6692_led_handler(card, 1);
425 break;
426 default:
427 w6692_led_handler(card, 0);
428 break;
429 }
430 }
431 W6692_new_ph(card);
432 }
433 if (cir & W_CIR_SCC) {
434 v1 = ReadW6692(card, W_SQR);
435 pr_debug("%s: SCC SQR %02X\n", card->name, v1);
436 }
437 }
438 if (exval & W_D_EXI_WEXP)
439 pr_debug("%s: spurious WEXP interrupt!\n", card->name);
440 if (exval & W_D_EXI_TEXP)
441 pr_debug("%s: spurious TEXP interrupt!\n", card->name);
442 }
443
444 static void
445 W6692_empty_Bfifo(struct w6692_ch *wch, int count)
446 {
447 struct w6692_hw *card = wch->bch.hw;
448 u8 *ptr;
449 int maxlen;
450
451 pr_debug("%s: empty_Bfifo %d\n", card->name, count);
452 if (unlikely(wch->bch.state == ISDN_P_NONE)) {
453 pr_debug("%s: empty_Bfifo ISDN_P_NONE\n", card->name);
454 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
455 if (wch->bch.rx_skb)
456 skb_trim(wch->bch.rx_skb, 0);
457 return;
458 }
459 if (test_bit(FLG_RX_OFF, &wch->bch.Flags)) {
460 wch->bch.dropcnt += count;
461 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
462 return;
463 }
464 maxlen = bchannel_get_rxbuf(&wch->bch, count);
465 if (maxlen < 0) {
466 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
467 if (wch->bch.rx_skb)
468 skb_trim(wch->bch.rx_skb, 0);
469 pr_warn("%s.B%d: No bufferspace for %d bytes\n",
470 card->name, wch->bch.nr, count);
471 return;
472 }
473 ptr = skb_put(wch->bch.rx_skb, count);
474 insb(wch->addr + W_B_RFIFO, ptr, count);
475 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
476 if (debug & DEBUG_HW_DFIFO) {
477 snprintf(card->log, 63, "B%1d-recv %s %d ",
478 wch->bch.nr, card->name, count);
479 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
480 }
481 }
482
483 static void
484 W6692_fill_Bfifo(struct w6692_ch *wch)
485 {
486 struct w6692_hw *card = wch->bch.hw;
487 int count, fillempty = 0;
488 u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS;
489
490 pr_debug("%s: fill Bfifo\n", card->name);
491 if (!wch->bch.tx_skb) {
492 if (!test_bit(FLG_TX_EMPTY, &wch->bch.Flags))
493 return;
494 ptr = wch->bch.fill;
495 count = W_B_FIFO_THRESH;
496 fillempty = 1;
497 } else {
498 count = wch->bch.tx_skb->len - wch->bch.tx_idx;
499 if (count <= 0)
500 return;
501 ptr = wch->bch.tx_skb->data + wch->bch.tx_idx;
502 }
503 if (count > W_B_FIFO_THRESH)
504 count = W_B_FIFO_THRESH;
505 else if (test_bit(FLG_HDLC, &wch->bch.Flags))
506 cmd |= W_B_CMDR_XME;
507
508 pr_debug("%s: fill Bfifo%d/%d\n", card->name,
509 count, wch->bch.tx_idx);
510 wch->bch.tx_idx += count;
511 if (fillempty) {
512 while (count > 0) {
513 outsb(wch->addr + W_B_XFIFO, ptr, MISDN_BCH_FILL_SIZE);
514 count -= MISDN_BCH_FILL_SIZE;
515 }
516 } else {
517 outsb(wch->addr + W_B_XFIFO, ptr, count);
518 }
519 WriteW6692B(wch, W_B_CMDR, cmd);
520 if ((debug & DEBUG_HW_BFIFO) && !fillempty) {
521 snprintf(card->log, 63, "B%1d-send %s %d ",
522 wch->bch.nr, card->name, count);
523 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
524 }
525 }
526
527 #if 0
528 static int
529 setvolume(struct w6692_ch *wch, int mic, struct sk_buff *skb)
530 {
531 struct w6692_hw *card = wch->bch.hw;
532 u16 *vol = (u16 *)skb->data;
533 u8 val;
534
535 if ((!(card->fmask & pots)) ||
536 !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
537 return -ENODEV;
538 if (skb->len < 2)
539 return -EINVAL;
540 if (*vol > 7)
541 return -EINVAL;
542 val = *vol & 7;
543 val = 7 - val;
544 if (mic) {
545 val <<= 3;
546 card->xaddr &= 0xc7;
547 } else {
548 card->xaddr &= 0xf8;
549 }
550 card->xaddr |= val;
551 WriteW6692(card, W_XADDR, card->xaddr);
552 return 0;
553 }
554
555 static int
556 enable_pots(struct w6692_ch *wch)
557 {
558 struct w6692_hw *card = wch->bch.hw;
559
560 if ((!(card->fmask & pots)) ||
561 !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
562 return -ENODEV;
563 wch->b_mode |= W_B_MODE_EPCM | W_B_MODE_BSW0;
564 WriteW6692B(wch, W_B_MODE, wch->b_mode);
565 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
566 card->pctl |= ((wch->bch.nr & 2) ? W_PCTL_PCX : 0);
567 WriteW6692(card, W_PCTL, card->pctl);
568 return 0;
569 }
570 #endif
571
572 static int
573 disable_pots(struct w6692_ch *wch)
574 {
575 struct w6692_hw *card = wch->bch.hw;
576
577 if (!(card->fmask & pots))
578 return -ENODEV;
579 wch->b_mode &= ~(W_B_MODE_EPCM | W_B_MODE_BSW0);
580 WriteW6692B(wch, W_B_MODE, wch->b_mode);
581 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
582 W_B_CMDR_XRST);
583 return 0;
584 }
585
586 static int
587 w6692_mode(struct w6692_ch *wch, u32 pr)
588 {
589 struct w6692_hw *card;
590
591 card = wch->bch.hw;
592 pr_debug("%s: B%d protocol %x-->%x\n", card->name,
593 wch->bch.nr, wch->bch.state, pr);
594 switch (pr) {
595 case ISDN_P_NONE:
596 if ((card->fmask & pots) && (wch->b_mode & W_B_MODE_EPCM))
597 disable_pots(wch);
598 wch->b_mode = 0;
599 mISDN_clear_bchannel(&wch->bch);
600 WriteW6692B(wch, W_B_MODE, wch->b_mode);
601 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
602 test_and_clear_bit(FLG_HDLC, &wch->bch.Flags);
603 test_and_clear_bit(FLG_TRANSPARENT, &wch->bch.Flags);
604 break;
605 case ISDN_P_B_RAW:
606 wch->b_mode = W_B_MODE_MMS;
607 WriteW6692B(wch, W_B_MODE, wch->b_mode);
608 WriteW6692B(wch, W_B_EXIM, 0);
609 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
610 W_B_CMDR_XRST);
611 test_and_set_bit(FLG_TRANSPARENT, &wch->bch.Flags);
612 break;
613 case ISDN_P_B_HDLC:
614 wch->b_mode = W_B_MODE_ITF;
615 WriteW6692B(wch, W_B_MODE, wch->b_mode);
616 WriteW6692B(wch, W_B_ADM1, 0xff);
617 WriteW6692B(wch, W_B_ADM2, 0xff);
618 WriteW6692B(wch, W_B_EXIM, 0);
619 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
620 W_B_CMDR_XRST);
621 test_and_set_bit(FLG_HDLC, &wch->bch.Flags);
622 break;
623 default:
624 pr_info("%s: protocol %x not known\n", card->name, pr);
625 return -ENOPROTOOPT;
626 }
627 wch->bch.state = pr;
628 return 0;
629 }
630
631 static void
632 send_next(struct w6692_ch *wch)
633 {
634 if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) {
635 W6692_fill_Bfifo(wch);
636 } else {
637 dev_kfree_skb(wch->bch.tx_skb);
638 if (get_next_bframe(&wch->bch)) {
639 W6692_fill_Bfifo(wch);
640 test_and_clear_bit(FLG_TX_EMPTY, &wch->bch.Flags);
641 } else if (test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) {
642 W6692_fill_Bfifo(wch);
643 }
644 }
645 }
646
647 static void
648 W6692B_interrupt(struct w6692_hw *card, int ch)
649 {
650 struct w6692_ch *wch = &card->bc[ch];
651 int count;
652 u8 stat, star = 0;
653
654 stat = ReadW6692B(wch, W_B_EXIR);
655 pr_debug("%s: B%d EXIR %02x\n", card->name, wch->bch.nr, stat);
656 if (stat & W_B_EXI_RME) {
657 star = ReadW6692B(wch, W_B_STAR);
658 if (star & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) {
659 if ((star & W_B_STAR_RDOV) &&
660 test_bit(FLG_ACTIVE, &wch->bch.Flags)) {
661 pr_debug("%s: B%d RDOV proto=%x\n", card->name,
662 wch->bch.nr, wch->bch.state);
663 #ifdef ERROR_STATISTIC
664 wch->bch.err_rdo++;
665 #endif
666 }
667 if (test_bit(FLG_HDLC, &wch->bch.Flags)) {
668 if (star & W_B_STAR_CRCE) {
669 pr_debug("%s: B%d CRC error\n",
670 card->name, wch->bch.nr);
671 #ifdef ERROR_STATISTIC
672 wch->bch.err_crc++;
673 #endif
674 }
675 if (star & W_B_STAR_RMB) {
676 pr_debug("%s: B%d message abort\n",
677 card->name, wch->bch.nr);
678 #ifdef ERROR_STATISTIC
679 wch->bch.err_inv++;
680 #endif
681 }
682 }
683 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
684 W_B_CMDR_RRST | W_B_CMDR_RACT);
685 if (wch->bch.rx_skb)
686 skb_trim(wch->bch.rx_skb, 0);
687 } else {
688 count = ReadW6692B(wch, W_B_RBCL) &
689 (W_B_FIFO_THRESH - 1);
690 if (count == 0)
691 count = W_B_FIFO_THRESH;
692 W6692_empty_Bfifo(wch, count);
693 recv_Bchannel(&wch->bch, 0, false);
694 }
695 }
696 if (stat & W_B_EXI_RMR) {
697 if (!(stat & W_B_EXI_RME))
698 star = ReadW6692B(wch, W_B_STAR);
699 if (star & W_B_STAR_RDOV) {
700 pr_debug("%s: B%d RDOV proto=%x\n", card->name,
701 wch->bch.nr, wch->bch.state);
702 #ifdef ERROR_STATISTIC
703 wch->bch.err_rdo++;
704 #endif
705 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
706 W_B_CMDR_RRST | W_B_CMDR_RACT);
707 } else {
708 W6692_empty_Bfifo(wch, W_B_FIFO_THRESH);
709 if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
710 recv_Bchannel(&wch->bch, 0, false);
711 }
712 }
713 if (stat & W_B_EXI_RDOV) {
714 /* only if it is not handled yet */
715 if (!(star & W_B_STAR_RDOV)) {
716 pr_debug("%s: B%d RDOV IRQ proto=%x\n", card->name,
717 wch->bch.nr, wch->bch.state);
718 #ifdef ERROR_STATISTIC
719 wch->bch.err_rdo++;
720 #endif
721 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
722 W_B_CMDR_RRST | W_B_CMDR_RACT);
723 }
724 }
725 if (stat & W_B_EXI_XFR) {
726 if (!(stat & (W_B_EXI_RME | W_B_EXI_RMR))) {
727 star = ReadW6692B(wch, W_B_STAR);
728 pr_debug("%s: B%d star %02x\n", card->name,
729 wch->bch.nr, star);
730 }
731 if (star & W_B_STAR_XDOW) {
732 pr_warn("%s: B%d XDOW proto=%x\n", card->name,
733 wch->bch.nr, wch->bch.state);
734 #ifdef ERROR_STATISTIC
735 wch->bch.err_xdu++;
736 #endif
737 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST |
738 W_B_CMDR_RACT);
739 /* resend */
740 if (wch->bch.tx_skb) {
741 if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
742 wch->bch.tx_idx = 0;
743 }
744 }
745 send_next(wch);
746 if (star & W_B_STAR_XDOW)
747 return; /* handle XDOW only once */
748 }
749 if (stat & W_B_EXI_XDUN) {
750 pr_warn("%s: B%d XDUN proto=%x\n", card->name,
751 wch->bch.nr, wch->bch.state);
752 #ifdef ERROR_STATISTIC
753 wch->bch.err_xdu++;
754 #endif
755 /* resend - no XRST needed */
756 if (wch->bch.tx_skb) {
757 if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
758 wch->bch.tx_idx = 0;
759 } else if (test_bit(FLG_FILLEMPTY, &wch->bch.Flags)) {
760 test_and_set_bit(FLG_TX_EMPTY, &wch->bch.Flags);
761 }
762 send_next(wch);
763 }
764 }
765
766 static irqreturn_t
767 w6692_irq(int intno, void *dev_id)
768 {
769 struct w6692_hw *card = dev_id;
770 u8 ista;
771
772 spin_lock(&card->lock);
773 ista = ReadW6692(card, W_ISTA);
774 if ((ista | card->imask) == card->imask) {
775 /* possible a shared IRQ reqest */
776 spin_unlock(&card->lock);
777 return IRQ_NONE;
778 }
779 card->irqcnt++;
780 pr_debug("%s: ista %02x\n", card->name, ista);
781 ista &= ~card->imask;
782 if (ista & W_INT_B1_EXI)
783 W6692B_interrupt(card, 0);
784 if (ista & W_INT_B2_EXI)
785 W6692B_interrupt(card, 1);
786 if (ista & W_INT_D_RME)
787 handle_rxD(card);
788 if (ista & W_INT_D_RMR)
789 W6692_empty_Dfifo(card, W_D_FIFO_THRESH);
790 if (ista & W_INT_D_XFR)
791 handle_txD(card);
792 if (ista & W_INT_D_EXI)
793 handle_statusD(card);
794 if (ista & (W_INT_XINT0 | W_INT_XINT1)) /* XINT0/1 - never */
795 pr_debug("%s: W6692 spurious XINT!\n", card->name);
796 /* End IRQ Handler */
797 spin_unlock(&card->lock);
798 return IRQ_HANDLED;
799 }
800
801 static void
802 dbusy_timer_handler(struct timer_list *t)
803 {
804 struct dchannel *dch = from_timer(dch, t, timer);
805 struct w6692_hw *card = dch->hw;
806 int rbch, star;
807 u_long flags;
808
809 if (test_bit(FLG_BUSY_TIMER, &dch->Flags)) {
810 spin_lock_irqsave(&card->lock, flags);
811 rbch = ReadW6692(card, W_D_RBCH);
812 star = ReadW6692(card, W_D_STAR);
813 pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n",
814 card->name, rbch, star);
815 if (star & W_D_STAR_XBZ) /* D-Channel Busy */
816 test_and_set_bit(FLG_L1_BUSY, &dch->Flags);
817 else {
818 /* discard frame; reset transceiver */
819 test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags);
820 if (dch->tx_idx)
821 dch->tx_idx = 0;
822 else
823 pr_info("%s: W6692 D-Channel Busy no tx_idx\n",
824 card->name);
825 /* Transmitter reset */
826 WriteW6692(card, W_D_CMDR, W_D_CMDR_XRST);
827 }
828 spin_unlock_irqrestore(&card->lock, flags);
829 }
830 }
831
832 static void initW6692(struct w6692_hw *card)
833 {
834 u8 val;
835
836 timer_setup(&card->dch.timer, dbusy_timer_handler, 0);
837 w6692_mode(&card->bc[0], ISDN_P_NONE);
838 w6692_mode(&card->bc[1], ISDN_P_NONE);
839 WriteW6692(card, W_D_CTL, 0x00);
840 disable_hwirq(card);
841 WriteW6692(card, W_D_SAM, 0xff);
842 WriteW6692(card, W_D_TAM, 0xff);
843 WriteW6692(card, W_D_MODE, W_D_MODE_RACT);
844 card->state = W_L1CMD_RST;
845 ph_command(card, W_L1CMD_RST);
846 ph_command(card, W_L1CMD_ECK);
847 /* enable all IRQ but extern */
848 card->imask = 0x18;
849 WriteW6692(card, W_D_EXIM, 0x00);
850 WriteW6692B(&card->bc[0], W_B_EXIM, 0);
851 WriteW6692B(&card->bc[1], W_B_EXIM, 0);
852 /* Reset D-chan receiver and transmitter */
853 WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST);
854 /* Reset B-chan receiver and transmitter */
855 WriteW6692B(&card->bc[0], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
856 WriteW6692B(&card->bc[1], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
857 /* enable peripheral */
858 if (card->subtype == W6692_USR) {
859 /* seems that USR implemented some power control features
860 * Pin 79 is connected to the oscilator circuit so we
861 * have to handle it here
862 */
863 card->pctl = 0x80;
864 card->xdata = 0;
865 WriteW6692(card, W_PCTL, card->pctl);
866 WriteW6692(card, W_XDATA, card->xdata);
867 } else {
868 card->pctl = W_PCTL_OE5 | W_PCTL_OE4 | W_PCTL_OE2 |
869 W_PCTL_OE1 | W_PCTL_OE0;
870 card->xaddr = 0x00;/* all sw off */
871 if (card->fmask & pots)
872 card->xdata |= 0x06; /* POWER UP/ LED OFF / ALAW */
873 if (card->fmask & led)
874 card->xdata |= 0x04; /* LED OFF */
875 if ((card->fmask & pots) || (card->fmask & led)) {
876 WriteW6692(card, W_PCTL, card->pctl);
877 WriteW6692(card, W_XADDR, card->xaddr);
878 WriteW6692(card, W_XDATA, card->xdata);
879 val = ReadW6692(card, W_XADDR);
880 if (debug & DEBUG_HW)
881 pr_notice("%s: W_XADDR=%02x\n",
882 card->name, val);
883 }
884 }
885 }
886
887 static void
888 reset_w6692(struct w6692_hw *card)
889 {
890 WriteW6692(card, W_D_CTL, W_D_CTL_SRST);
891 mdelay(10);
892 WriteW6692(card, W_D_CTL, 0);
893 }
894
895 static int
896 init_card(struct w6692_hw *card)
897 {
898 int cnt = 3;
899 u_long flags;
900
901 spin_lock_irqsave(&card->lock, flags);
902 disable_hwirq(card);
903 spin_unlock_irqrestore(&card->lock, flags);
904 if (request_irq(card->irq, w6692_irq, IRQF_SHARED, card->name, card)) {
905 pr_info("%s: couldn't get interrupt %d\n", card->name,
906 card->irq);
907 return -EIO;
908 }
909 while (cnt--) {
910 spin_lock_irqsave(&card->lock, flags);
911 initW6692(card);
912 enable_hwirq(card);
913 spin_unlock_irqrestore(&card->lock, flags);
914 /* Timeout 10ms */
915 msleep_interruptible(10);
916 if (debug & DEBUG_HW)
917 pr_notice("%s: IRQ %d count %d\n", card->name,
918 card->irq, card->irqcnt);
919 if (!card->irqcnt) {
920 pr_info("%s: IRQ(%d) getting no IRQs during init %d\n",
921 card->name, card->irq, 3 - cnt);
922 reset_w6692(card);
923 } else
924 return 0;
925 }
926 free_irq(card->irq, card);
927 return -EIO;
928 }
929
930 static int
931 w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
932 {
933 struct bchannel *bch = container_of(ch, struct bchannel, ch);
934 struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch);
935 struct w6692_hw *card = bch->hw;
936 int ret = -EINVAL;
937 struct mISDNhead *hh = mISDN_HEAD_P(skb);
938 unsigned long flags;
939
940 switch (hh->prim) {
941 case PH_DATA_REQ:
942 spin_lock_irqsave(&card->lock, flags);
943 ret = bchannel_senddata(bch, skb);
944 if (ret > 0) { /* direct TX */
945 ret = 0;
946 W6692_fill_Bfifo(bc);
947 }
948 spin_unlock_irqrestore(&card->lock, flags);
949 return ret;
950 case PH_ACTIVATE_REQ:
951 spin_lock_irqsave(&card->lock, flags);
952 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
953 ret = w6692_mode(bc, ch->protocol);
954 else
955 ret = 0;
956 spin_unlock_irqrestore(&card->lock, flags);
957 if (!ret)
958 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
959 NULL, GFP_KERNEL);
960 break;
961 case PH_DEACTIVATE_REQ:
962 spin_lock_irqsave(&card->lock, flags);
963 mISDN_clear_bchannel(bch);
964 w6692_mode(bc, ISDN_P_NONE);
965 spin_unlock_irqrestore(&card->lock, flags);
966 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
967 NULL, GFP_KERNEL);
968 ret = 0;
969 break;
970 default:
971 pr_info("%s: %s unknown prim(%x,%x)\n",
972 card->name, __func__, hh->prim, hh->id);
973 ret = -EINVAL;
974 }
975 if (!ret)
976 dev_kfree_skb(skb);
977 return ret;
978 }
979
980 static int
981 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
982 {
983 return mISDN_ctrl_bchannel(bch, cq);
984 }
985
986 static int
987 open_bchannel(struct w6692_hw *card, struct channel_req *rq)
988 {
989 struct bchannel *bch;
990
991 if (rq->adr.channel == 0 || rq->adr.channel > 2)
992 return -EINVAL;
993 if (rq->protocol == ISDN_P_NONE)
994 return -EINVAL;
995 bch = &card->bc[rq->adr.channel - 1].bch;
996 if (test_and_set_bit(FLG_OPEN, &bch->Flags))
997 return -EBUSY; /* b-channel can be only open once */
998 bch->ch.protocol = rq->protocol;
999 rq->ch = &bch->ch;
1000 return 0;
1001 }
1002
1003 static int
1004 channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq)
1005 {
1006 int ret = 0;
1007
1008 switch (cq->op) {
1009 case MISDN_CTRL_GETOP:
1010 cq->op = MISDN_CTRL_L1_TIMER3;
1011 break;
1012 case MISDN_CTRL_L1_TIMER3:
1013 ret = l1_event(card->dch.l1, HW_TIMER3_VALUE | (cq->p1 & 0xff));
1014 break;
1015 default:
1016 pr_info("%s: unknown CTRL OP %x\n", card->name, cq->op);
1017 ret = -EINVAL;
1018 break;
1019 }
1020 return ret;
1021 }
1022
1023 static int
1024 w6692_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1025 {
1026 struct bchannel *bch = container_of(ch, struct bchannel, ch);
1027 struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch);
1028 struct w6692_hw *card = bch->hw;
1029 int ret = -EINVAL;
1030 u_long flags;
1031
1032 pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg);
1033 switch (cmd) {
1034 case CLOSE_CHANNEL:
1035 test_and_clear_bit(FLG_OPEN, &bch->Flags);
1036 cancel_work_sync(&bch->workq);
1037 spin_lock_irqsave(&card->lock, flags);
1038 mISDN_clear_bchannel(bch);
1039 w6692_mode(bc, ISDN_P_NONE);
1040 spin_unlock_irqrestore(&card->lock, flags);
1041 ch->protocol = ISDN_P_NONE;
1042 ch->peer = NULL;
1043 module_put(THIS_MODULE);
1044 ret = 0;
1045 break;
1046 case CONTROL_CHANNEL:
1047 ret = channel_bctrl(bch, arg);
1048 break;
1049 default:
1050 pr_info("%s: %s unknown prim(%x)\n",
1051 card->name, __func__, cmd);
1052 }
1053 return ret;
1054 }
1055
1056 static int
1057 w6692_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
1058 {
1059 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
1060 struct dchannel *dch = container_of(dev, struct dchannel, dev);
1061 struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1062 int ret = -EINVAL;
1063 struct mISDNhead *hh = mISDN_HEAD_P(skb);
1064 u32 id;
1065 u_long flags;
1066
1067 switch (hh->prim) {
1068 case PH_DATA_REQ:
1069 spin_lock_irqsave(&card->lock, flags);
1070 ret = dchannel_senddata(dch, skb);
1071 if (ret > 0) { /* direct TX */
1072 id = hh->id; /* skb can be freed */
1073 W6692_fill_Dfifo(card);
1074 ret = 0;
1075 spin_unlock_irqrestore(&card->lock, flags);
1076 queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
1077 } else
1078 spin_unlock_irqrestore(&card->lock, flags);
1079 return ret;
1080 case PH_ACTIVATE_REQ:
1081 ret = l1_event(dch->l1, hh->prim);
1082 break;
1083 case PH_DEACTIVATE_REQ:
1084 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
1085 ret = l1_event(dch->l1, hh->prim);
1086 break;
1087 }
1088
1089 if (!ret)
1090 dev_kfree_skb(skb);
1091 return ret;
1092 }
1093
1094 static int
1095 w6692_l1callback(struct dchannel *dch, u32 cmd)
1096 {
1097 struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1098 u_long flags;
1099
1100 pr_debug("%s: cmd(%x) state(%02x)\n", card->name, cmd, card->state);
1101 switch (cmd) {
1102 case INFO3_P8:
1103 spin_lock_irqsave(&card->lock, flags);
1104 ph_command(card, W_L1CMD_AR8);
1105 spin_unlock_irqrestore(&card->lock, flags);
1106 break;
1107 case INFO3_P10:
1108 spin_lock_irqsave(&card->lock, flags);
1109 ph_command(card, W_L1CMD_AR10);
1110 spin_unlock_irqrestore(&card->lock, flags);
1111 break;
1112 case HW_RESET_REQ:
1113 spin_lock_irqsave(&card->lock, flags);
1114 if (card->state != W_L1IND_DRD)
1115 ph_command(card, W_L1CMD_RST);
1116 ph_command(card, W_L1CMD_ECK);
1117 spin_unlock_irqrestore(&card->lock, flags);
1118 break;
1119 case HW_DEACT_REQ:
1120 skb_queue_purge(&dch->squeue);
1121 if (dch->tx_skb) {
1122 dev_kfree_skb(dch->tx_skb);
1123 dch->tx_skb = NULL;
1124 }
1125 dch->tx_idx = 0;
1126 if (dch->rx_skb) {
1127 dev_kfree_skb(dch->rx_skb);
1128 dch->rx_skb = NULL;
1129 }
1130 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
1131 if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
1132 del_timer(&dch->timer);
1133 break;
1134 case HW_POWERUP_REQ:
1135 spin_lock_irqsave(&card->lock, flags);
1136 ph_command(card, W_L1CMD_ECK);
1137 spin_unlock_irqrestore(&card->lock, flags);
1138 break;
1139 case PH_ACTIVATE_IND:
1140 test_and_set_bit(FLG_ACTIVE, &dch->Flags);
1141 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
1142 GFP_ATOMIC);
1143 break;
1144 case PH_DEACTIVATE_IND:
1145 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
1146 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
1147 GFP_ATOMIC);
1148 break;
1149 default:
1150 pr_debug("%s: %s unknown command %x\n", card->name,
1151 __func__, cmd);
1152 return -1;
1153 }
1154 return 0;
1155 }
1156
1157 static int
1158 open_dchannel(struct w6692_hw *card, struct channel_req *rq, void *caller)
1159 {
1160 pr_debug("%s: %s dev(%d) open from %p\n", card->name, __func__,
1161 card->dch.dev.id, caller);
1162 if (rq->protocol != ISDN_P_TE_S0)
1163 return -EINVAL;
1164 if (rq->adr.channel == 1)
1165 /* E-Channel not supported */
1166 return -EINVAL;
1167 rq->ch = &card->dch.dev.D;
1168 rq->ch->protocol = rq->protocol;
1169 if (card->dch.state == 7)
1170 _queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
1171 0, NULL, GFP_KERNEL);
1172 return 0;
1173 }
1174
1175 static int
1176 w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1177 {
1178 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
1179 struct dchannel *dch = container_of(dev, struct dchannel, dev);
1180 struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1181 struct channel_req *rq;
1182 int err = 0;
1183
1184 pr_debug("%s: DCTRL: %x %p\n", card->name, cmd, arg);
1185 switch (cmd) {
1186 case OPEN_CHANNEL:
1187 rq = arg;
1188 if (rq->protocol == ISDN_P_TE_S0)
1189 err = open_dchannel(card, rq, __builtin_return_address(0));
1190 else
1191 err = open_bchannel(card, rq);
1192 if (err)
1193 break;
1194 if (!try_module_get(THIS_MODULE))
1195 pr_info("%s: cannot get module\n", card->name);
1196 break;
1197 case CLOSE_CHANNEL:
1198 pr_debug("%s: dev(%d) close from %p\n", card->name,
1199 dch->dev.id, __builtin_return_address(0));
1200 module_put(THIS_MODULE);
1201 break;
1202 case CONTROL_CHANNEL:
1203 err = channel_ctrl(card, arg);
1204 break;
1205 default:
1206 pr_debug("%s: unknown DCTRL command %x\n", card->name, cmd);
1207 return -EINVAL;
1208 }
1209 return err;
1210 }
1211
1212 static int
1213 setup_w6692(struct w6692_hw *card)
1214 {
1215 u32 val;
1216
1217 if (!request_region(card->addr, 256, card->name)) {
1218 pr_info("%s: config port %x-%x already in use\n", card->name,
1219 card->addr, card->addr + 255);
1220 return -EIO;
1221 }
1222 W6692Version(card);
1223 card->bc[0].addr = card->addr;
1224 card->bc[1].addr = card->addr + 0x40;
1225 val = ReadW6692(card, W_ISTA);
1226 if (debug & DEBUG_HW)
1227 pr_notice("%s ISTA=%02x\n", card->name, val);
1228 val = ReadW6692(card, W_IMASK);
1229 if (debug & DEBUG_HW)
1230 pr_notice("%s IMASK=%02x\n", card->name, val);
1231 val = ReadW6692(card, W_D_EXIR);
1232 if (debug & DEBUG_HW)
1233 pr_notice("%s D_EXIR=%02x\n", card->name, val);
1234 val = ReadW6692(card, W_D_EXIM);
1235 if (debug & DEBUG_HW)
1236 pr_notice("%s D_EXIM=%02x\n", card->name, val);
1237 val = ReadW6692(card, W_D_RSTA);
1238 if (debug & DEBUG_HW)
1239 pr_notice("%s D_RSTA=%02x\n", card->name, val);
1240 return 0;
1241 }
1242
1243 static void
1244 release_card(struct w6692_hw *card)
1245 {
1246 u_long flags;
1247
1248 spin_lock_irqsave(&card->lock, flags);
1249 disable_hwirq(card);
1250 w6692_mode(&card->bc[0], ISDN_P_NONE);
1251 w6692_mode(&card->bc[1], ISDN_P_NONE);
1252 if ((card->fmask & led) || card->subtype == W6692_USR) {
1253 card->xdata |= 0x04; /* LED OFF */
1254 WriteW6692(card, W_XDATA, card->xdata);
1255 }
1256 spin_unlock_irqrestore(&card->lock, flags);
1257 free_irq(card->irq, card);
1258 l1_event(card->dch.l1, CLOSE_CHANNEL);
1259 mISDN_unregister_device(&card->dch.dev);
1260 release_region(card->addr, 256);
1261 mISDN_freebchannel(&card->bc[1].bch);
1262 mISDN_freebchannel(&card->bc[0].bch);
1263 mISDN_freedchannel(&card->dch);
1264 write_lock_irqsave(&card_lock, flags);
1265 list_del(&card->list);
1266 write_unlock_irqrestore(&card_lock, flags);
1267 pci_disable_device(card->pdev);
1268 pci_set_drvdata(card->pdev, NULL);
1269 kfree(card);
1270 }
1271
1272 static int
1273 setup_instance(struct w6692_hw *card)
1274 {
1275 int i, err;
1276 u_long flags;
1277
1278 snprintf(card->name, MISDN_MAX_IDLEN - 1, "w6692.%d", w6692_cnt + 1);
1279 write_lock_irqsave(&card_lock, flags);
1280 list_add_tail(&card->list, &Cards);
1281 write_unlock_irqrestore(&card_lock, flags);
1282 card->fmask = (1 << w6692_cnt);
1283 _set_debug(card);
1284 spin_lock_init(&card->lock);
1285 mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, W6692_ph_bh);
1286 card->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0);
1287 card->dch.dev.D.send = w6692_l2l1D;
1288 card->dch.dev.D.ctrl = w6692_dctrl;
1289 card->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1290 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
1291 card->dch.hw = card;
1292 card->dch.dev.nrbchan = 2;
1293 for (i = 0; i < 2; i++) {
1294 mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM,
1295 W_B_FIFO_THRESH);
1296 card->bc[i].bch.hw = card;
1297 card->bc[i].bch.nr = i + 1;
1298 card->bc[i].bch.ch.nr = i + 1;
1299 card->bc[i].bch.ch.send = w6692_l2l1B;
1300 card->bc[i].bch.ch.ctrl = w6692_bctrl;
1301 set_channelmap(i + 1, card->dch.dev.channelmap);
1302 list_add(&card->bc[i].bch.ch.list, &card->dch.dev.bchannels);
1303 }
1304 err = setup_w6692(card);
1305 if (err)
1306 goto error_setup;
1307 err = mISDN_register_device(&card->dch.dev, &card->pdev->dev,
1308 card->name);
1309 if (err)
1310 goto error_reg;
1311 err = init_card(card);
1312 if (err)
1313 goto error_init;
1314 err = create_l1(&card->dch, w6692_l1callback);
1315 if (!err) {
1316 w6692_cnt++;
1317 pr_notice("W6692 %d cards installed\n", w6692_cnt);
1318 return 0;
1319 }
1320
1321 free_irq(card->irq, card);
1322 error_init:
1323 mISDN_unregister_device(&card->dch.dev);
1324 error_reg:
1325 release_region(card->addr, 256);
1326 error_setup:
1327 mISDN_freebchannel(&card->bc[1].bch);
1328 mISDN_freebchannel(&card->bc[0].bch);
1329 mISDN_freedchannel(&card->dch);
1330 write_lock_irqsave(&card_lock, flags);
1331 list_del(&card->list);
1332 write_unlock_irqrestore(&card_lock, flags);
1333 kfree(card);
1334 return err;
1335 }
1336
1337 static int
1338 w6692_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1339 {
1340 int err = -ENOMEM;
1341 struct w6692_hw *card;
1342 struct w6692map *m = (struct w6692map *)ent->driver_data;
1343
1344 card = kzalloc(sizeof(struct w6692_hw), GFP_KERNEL);
1345 if (!card) {
1346 pr_info("No kmem for w6692 card\n");
1347 return err;
1348 }
1349 card->pdev = pdev;
1350 card->subtype = m->subtype;
1351 err = pci_enable_device(pdev);
1352 if (err) {
1353 kfree(card);
1354 return err;
1355 }
1356
1357 printk(KERN_INFO "mISDN_w6692: found adapter %s at %s\n",
1358 m->name, pci_name(pdev));
1359
1360 card->addr = pci_resource_start(pdev, 1);
1361 card->irq = pdev->irq;
1362 pci_set_drvdata(pdev, card);
1363 err = setup_instance(card);
1364 if (err)
1365 pci_set_drvdata(pdev, NULL);
1366 return err;
1367 }
1368
1369 static void
1370 w6692_remove_pci(struct pci_dev *pdev)
1371 {
1372 struct w6692_hw *card = pci_get_drvdata(pdev);
1373
1374 if (card)
1375 release_card(card);
1376 else
1377 if (debug)
1378 pr_notice("%s: drvdata already removed\n", __func__);
1379 }
1380
1381 static const struct pci_device_id w6692_ids[] = {
1382 { PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH,
1383 PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[0]},
1384 { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
1385 PCI_VENDOR_ID_USR, PCI_DEVICE_ID_USR_6692, 0, 0,
1386 (ulong)&w6692_map[2]},
1387 { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
1388 PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[1]},
1389 { }
1390 };
1391 MODULE_DEVICE_TABLE(pci, w6692_ids);
1392
1393 static struct pci_driver w6692_driver = {
1394 .name = "w6692",
1395 .probe = w6692_probe,
1396 .remove = w6692_remove_pci,
1397 .id_table = w6692_ids,
1398 };
1399
1400 static int __init w6692_init(void)
1401 {
1402 int err;
1403
1404 pr_notice("Winbond W6692 PCI driver Rev. %s\n", W6692_REV);
1405
1406 err = pci_register_driver(&w6692_driver);
1407 return err;
1408 }
1409
1410 static void __exit w6692_cleanup(void)
1411 {
1412 pci_unregister_driver(&w6692_driver);
1413 }
1414
1415 module_init(w6692_init);
1416 module_exit(w6692_cleanup);
Linux with added FPC-III support