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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / isdn / hardware / mISDN / w6692.c
blobd3f1077b709b9e2fa0e3267bec761552813de8bf
1 /*
2 * w6692.c mISDN driver for Winbond w6692 based cards
3 *
4 * Author Karsten Keil <kkeil@suse.de>
5 * based on the w6692 I4L driver from Petr Novak <petr.novak@i.cz>
6 *
7 * Copyright 2009 by Karsten Keil <keil@isdn4linux.de>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 *
22 */
23
24 #include <linux/module.h>
25 #include <linux/pci.h>
26 #include <linux/delay.h>
27 #include <linux/mISDNhw.h>
28 #include "w6692.h"
29
30 #define W6692_REV "2.0"
31
32 #define DBUSY_TIMER_VALUE 80
33
34 enum {
35 W6692_ASUS,
36 W6692_WINBOND,
37 W6692_USR
38 };
39
40 /* private data in the PCI devices list */
41 struct w6692map {
42 u_int subtype;
43 char *name;
44 };
45
46 static const struct w6692map w6692_map[] =
47 {
48 {W6692_ASUS, "Dynalink/AsusCom IS64PH"},
49 {W6692_WINBOND, "Winbond W6692"},
50 {W6692_USR, "USR W6692"}
51 };
52
53 #ifndef PCI_VENDOR_ID_USR
54 #define PCI_VENDOR_ID_USR 0x16ec
55 #define PCI_DEVICE_ID_USR_6692 0x3409
56 #endif
57
58 struct w6692_ch {
59 struct bchannel bch;
60 u32 addr;
61 struct timer_list timer;
62 u8 b_mode;
63 };
64
65 struct w6692_hw {
66 struct list_head list;
67 struct pci_dev *pdev;
68 char name[MISDN_MAX_IDLEN];
69 u32 irq;
70 u32 irqcnt;
71 u32 addr;
72 u32 fmask; /* feature mask - bit set per card nr */
73 int subtype;
74 spinlock_t lock; /* hw lock */
75 u8 imask;
76 u8 pctl;
77 u8 xaddr;
78 u8 xdata;
79 u8 state;
80 struct w6692_ch bc[2];
81 struct dchannel dch;
82 char log[64];
83 };
84
85 static LIST_HEAD(Cards);
86 static DEFINE_RWLOCK(card_lock); /* protect Cards */
87
88 static int w6692_cnt;
89 static int debug;
90 static u32 led;
91 static u32 pots;
92
93 static void
94 _set_debug(struct w6692_hw *card)
95 {
96 card->dch.debug = debug;
97 card->bc[0].bch.debug = debug;
98 card->bc[1].bch.debug = debug;
99 }
100
101 static int
102 set_debug(const char *val, struct kernel_param *kp)
103 {
104 int ret;
105 struct w6692_hw *card;
106
107 ret = param_set_uint(val, kp);
108 if (!ret) {
109 read_lock(&card_lock);
110 list_for_each_entry(card, &Cards, list)
111 _set_debug(card);
112 read_unlock(&card_lock);
113 }
114 return ret;
115 }
116
117 MODULE_AUTHOR("Karsten Keil");
118 MODULE_LICENSE("GPL v2");
119 MODULE_VERSION(W6692_REV);
120 module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
121 MODULE_PARM_DESC(debug, "W6692 debug mask");
122 module_param(led, uint, S_IRUGO | S_IWUSR);
123 MODULE_PARM_DESC(led, "W6692 LED support bitmask (one bit per card)");
124 module_param(pots, uint, S_IRUGO | S_IWUSR);
125 MODULE_PARM_DESC(pots, "W6692 POTS support bitmask (one bit per card)");
126
127 static inline u8
128 ReadW6692(struct w6692_hw *card, u8 offset)
129 {
130 return inb(card->addr + offset);
131 }
132
133 static inline void
134 WriteW6692(struct w6692_hw *card, u8 offset, u8 value)
135 {
136 outb(value, card->addr + offset);
137 }
138
139 static inline u8
140 ReadW6692B(struct w6692_ch *bc, u8 offset)
141 {
142 return inb(bc->addr + offset);
143 }
144
145 static inline void
146 WriteW6692B(struct w6692_ch *bc, u8 offset, u8 value)
147 {
148 outb(value, bc->addr + offset);
149 }
150
151 static void
152 enable_hwirq(struct w6692_hw *card)
153 {
154 WriteW6692(card, W_IMASK, card->imask);
155 }
156
157 static void
158 disable_hwirq(struct w6692_hw *card)
159 {
160 WriteW6692(card, W_IMASK, 0xff);
161 }
162
163 static const char *W6692Ver[] = {"V00", "V01", "V10", "V11"};
164
165 static void
166 W6692Version(struct w6692_hw *card)
167 {
168 int val;
169
170 val = ReadW6692(card, W_D_RBCH);
171 pr_notice("%s: Winbond W6692 version: %s\n", card->name,
172 W6692Ver[(val >> 6) & 3]);
173 }
174
175 static void
176 w6692_led_handler(struct w6692_hw *card, int on)
177 {
178 if ((!(card->fmask & led)) || card->subtype == W6692_USR)
179 return;
180 if (on) {
181 card->xdata &= 0xfb; /* LED ON */
182 WriteW6692(card, W_XDATA, card->xdata);
183 } else {
184 card->xdata |= 0x04; /* LED OFF */
185 WriteW6692(card, W_XDATA, card->xdata);
186 }
187 }
188
189 static void
190 ph_command(struct w6692_hw *card, u8 cmd)
191 {
192 pr_debug("%s: ph_command %x\n", card->name, cmd);
193 WriteW6692(card, W_CIX, cmd);
194 }
195
196 static void
197 W6692_new_ph(struct w6692_hw *card)
198 {
199 if (card->state == W_L1CMD_RST)
200 ph_command(card, W_L1CMD_DRC);
201 schedule_event(&card->dch, FLG_PHCHANGE);
202 }
203
204 static void
205 W6692_ph_bh(struct dchannel *dch)
206 {
207 struct w6692_hw *card = dch->hw;
208
209 switch (card->state) {
210 case W_L1CMD_RST:
211 dch->state = 0;
212 l1_event(dch->l1, HW_RESET_IND);
213 break;
214 case W_L1IND_CD:
215 dch->state = 3;
216 l1_event(dch->l1, HW_DEACT_CNF);
217 break;
218 case W_L1IND_DRD:
219 dch->state = 3;
220 l1_event(dch->l1, HW_DEACT_IND);
221 break;
222 case W_L1IND_CE:
223 dch->state = 4;
224 l1_event(dch->l1, HW_POWERUP_IND);
225 break;
226 case W_L1IND_LD:
227 if (dch->state <= 5) {
228 dch->state = 5;
229 l1_event(dch->l1, ANYSIGNAL);
230 } else {
231 dch->state = 8;
232 l1_event(dch->l1, LOSTFRAMING);
233 }
234 break;
235 case W_L1IND_ARD:
236 dch->state = 6;
237 l1_event(dch->l1, INFO2);
238 break;
239 case W_L1IND_AI8:
240 dch->state = 7;
241 l1_event(dch->l1, INFO4_P8);
242 break;
243 case W_L1IND_AI10:
244 dch->state = 7;
245 l1_event(dch->l1, INFO4_P10);
246 break;
247 default:
248 pr_debug("%s: TE unknown state %02x dch state %02x\n",
249 card->name, card->state, dch->state);
250 break;
251 }
252 pr_debug("%s: TE newstate %02x\n", card->name, dch->state);
253 }
254
255 static void
256 W6692_empty_Dfifo(struct w6692_hw *card, int count)
257 {
258 struct dchannel *dch = &card->dch;
259 u8 *ptr;
260
261 pr_debug("%s: empty_Dfifo %d\n", card->name, count);
262 if (!dch->rx_skb) {
263 dch->rx_skb = mI_alloc_skb(card->dch.maxlen, GFP_ATOMIC);
264 if (!dch->rx_skb) {
265 pr_info("%s: D receive out of memory\n", card->name);
266 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
267 return;
268 }
269 }
270 if ((dch->rx_skb->len + count) >= dch->maxlen) {
271 pr_debug("%s: empty_Dfifo overrun %d\n", card->name,
272 dch->rx_skb->len + count);
273 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
274 return;
275 }
276 ptr = skb_put(dch->rx_skb, count);
277 insb(card->addr + W_D_RFIFO, ptr, count);
278 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
279 if (debug & DEBUG_HW_DFIFO) {
280 snprintf(card->log, 63, "D-recv %s %d ",
281 card->name, count);
282 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
283 }
284 }
285
286 static void
287 W6692_fill_Dfifo(struct w6692_hw *card)
288 {
289 struct dchannel *dch = &card->dch;
290 int count;
291 u8 *ptr;
292 u8 cmd = W_D_CMDR_XMS;
293
294 pr_debug("%s: fill_Dfifo\n", card->name);
295 if (!dch->tx_skb)
296 return;
297 count = dch->tx_skb->len - dch->tx_idx;
298 if (count <= 0)
299 return;
300 if (count > W_D_FIFO_THRESH)
301 count = W_D_FIFO_THRESH;
302 else
303 cmd |= W_D_CMDR_XME;
304 ptr = dch->tx_skb->data + dch->tx_idx;
305 dch->tx_idx += count;
306 outsb(card->addr + W_D_XFIFO, ptr, count);
307 WriteW6692(card, W_D_CMDR, cmd);
308 if (test_and_set_bit(FLG_BUSY_TIMER, &dch->Flags)) {
309 pr_debug("%s: fill_Dfifo dbusytimer running\n", card->name);
310 del_timer(&dch->timer);
311 }
312 init_timer(&dch->timer);
313 dch->timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ)/1000);
314 add_timer(&dch->timer);
315 if (debug & DEBUG_HW_DFIFO) {
316 snprintf(card->log, 63, "D-send %s %d ",
317 card->name, count);
318 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
319 }
320 }
321
322 static void
323 d_retransmit(struct w6692_hw *card)
324 {
325 struct dchannel *dch = &card->dch;
326
327 if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
328 del_timer(&dch->timer);
329 #ifdef FIXME
330 if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags))
331 dchannel_sched_event(dch, D_CLEARBUSY);
332 #endif
333 if (test_bit(FLG_TX_BUSY, &dch->Flags)) {
334 /* Restart frame */
335 dch->tx_idx = 0;
336 W6692_fill_Dfifo(card);
337 } else if (dch->tx_skb) { /* should not happen */
338 pr_info("%s: %s without TX_BUSY\n", card->name, __func__);
339 test_and_set_bit(FLG_TX_BUSY, &dch->Flags);
340 dch->tx_idx = 0;
341 W6692_fill_Dfifo(card);
342 } else {
343 pr_info("%s: XDU no TX_BUSY\n", card->name);
344 if (get_next_dframe(dch))
345 W6692_fill_Dfifo(card);
346 }
347 }
348
349 static void
350 handle_rxD(struct w6692_hw *card) {
351 u8 stat;
352 int count;
353
354 stat = ReadW6692(card, W_D_RSTA);
355 if (stat & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) {
356 if (stat & W_D_RSTA_RDOV) {
357 pr_debug("%s: D-channel RDOV\n", card->name);
358 #ifdef ERROR_STATISTIC
359 card->dch.err_rx++;
360 #endif
361 }
362 if (stat & W_D_RSTA_CRCE) {
363 pr_debug("%s: D-channel CRC error\n", card->name);
364 #ifdef ERROR_STATISTIC
365 card->dch.err_crc++;
366 #endif
367 }
368 if (stat & W_D_RSTA_RMB) {
369 pr_debug("%s: D-channel ABORT\n", card->name);
370 #ifdef ERROR_STATISTIC
371 card->dch.err_rx++;
372 #endif
373 }
374 if (card->dch.rx_skb)
375 dev_kfree_skb(card->dch.rx_skb);
376 card->dch.rx_skb = NULL;
377 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST);
378 } else {
379 count = ReadW6692(card, W_D_RBCL) & (W_D_FIFO_THRESH - 1);
380 if (count == 0)
381 count = W_D_FIFO_THRESH;
382 W6692_empty_Dfifo(card, count);
383 recv_Dchannel(&card->dch);
384 }
385 }
386
387 static void
388 handle_txD(struct w6692_hw *card) {
389 if (test_and_clear_bit(FLG_BUSY_TIMER, &card->dch.Flags))
390 del_timer(&card->dch.timer);
391 if (card->dch.tx_skb && card->dch.tx_idx < card->dch.tx_skb->len) {
392 W6692_fill_Dfifo(card);
393 } else {
394 if (card->dch.tx_skb)
395 dev_kfree_skb(card->dch.tx_skb);
396 if (get_next_dframe(&card->dch))
397 W6692_fill_Dfifo(card);
398 }
399 }
400
401 static void
402 handle_statusD(struct w6692_hw *card)
403 {
404 struct dchannel *dch = &card->dch;
405 u8 exval, v1, cir;
406
407 exval = ReadW6692(card, W_D_EXIR);
408
409 pr_debug("%s: D_EXIR %02x\n", card->name, exval);
410 if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) {
411 /* Transmit underrun/collision */
412 pr_debug("%s: D-channel underrun/collision\n", card->name);
413 #ifdef ERROR_STATISTIC
414 dch->err_tx++;
415 #endif
416 d_retransmit(card);
417 }
418 if (exval & W_D_EXI_RDOV) { /* RDOV */
419 pr_debug("%s: D-channel RDOV\n", card->name);
420 WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST);
421 }
422 if (exval & W_D_EXI_TIN2) /* TIN2 - never */
423 pr_debug("%s: spurious TIN2 interrupt\n", card->name);
424 if (exval & W_D_EXI_MOC) { /* MOC - not supported */
425 v1 = ReadW6692(card, W_MOSR);
426 pr_debug("%s: spurious MOC interrupt MOSR %02x\n",
427 card->name, v1);
428 }
429 if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */
430 cir = ReadW6692(card, W_CIR);
431 pr_debug("%s: ISC CIR %02X\n", card->name, cir);
432 if (cir & W_CIR_ICC) {
433 v1 = cir & W_CIR_COD_MASK;
434 pr_debug("%s: ph_state_change %x -> %x\n", card->name,
435 dch->state, v1);
436 card->state = v1;
437 if (card->fmask & led) {
438 switch (v1) {
439 case W_L1IND_AI8:
440 case W_L1IND_AI10:
441 w6692_led_handler(card, 1);
442 break;
443 default:
444 w6692_led_handler(card, 0);
445 break;
446 }
447 }
448 W6692_new_ph(card);
449 }
450 if (cir & W_CIR_SCC) {
451 v1 = ReadW6692(card, W_SQR);
452 pr_debug("%s: SCC SQR %02X\n", card->name, v1);
453 }
454 }
455 if (exval & W_D_EXI_WEXP)
456 pr_debug("%s: spurious WEXP interrupt!\n", card->name);
457 if (exval & W_D_EXI_TEXP)
458 pr_debug("%s: spurious TEXP interrupt!\n", card->name);
459 }
460
461 static void
462 W6692_empty_Bfifo(struct w6692_ch *wch, int count)
463 {
464 struct w6692_hw *card = wch->bch.hw;
465 u8 *ptr;
466
467 pr_debug("%s: empty_Bfifo %d\n", card->name, count);
468 if (unlikely(wch->bch.state == ISDN_P_NONE)) {
469 pr_debug("%s: empty_Bfifo ISDN_P_NONE\n", card->name);
470 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
471 if (wch->bch.rx_skb)
472 skb_trim(wch->bch.rx_skb, 0);
473 return;
474 }
475 if (!wch->bch.rx_skb) {
476 wch->bch.rx_skb = mI_alloc_skb(wch->bch.maxlen, GFP_ATOMIC);
477 if (unlikely(!wch->bch.rx_skb)) {
478 pr_info("%s: B receive out of memory\n", card->name);
479 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
480 W_B_CMDR_RACT);
481 return;
482 }
483 }
484 if (wch->bch.rx_skb->len + count > wch->bch.maxlen) {
485 pr_debug("%s: empty_Bfifo incoming packet too large\n",
486 card->name);
487 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
488 skb_trim(wch->bch.rx_skb, 0);
489 return;
490 }
491 ptr = skb_put(wch->bch.rx_skb, count);
492 insb(wch->addr + W_B_RFIFO, ptr, count);
493 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
494 if (debug & DEBUG_HW_DFIFO) {
495 snprintf(card->log, 63, "B%1d-recv %s %d ",
496 wch->bch.nr, card->name, count);
497 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
498 }
499 }
500
501 static void
502 W6692_fill_Bfifo(struct w6692_ch *wch)
503 {
504 struct w6692_hw *card = wch->bch.hw;
505 int count;
506 u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS;
507
508 pr_debug("%s: fill Bfifo\n", card->name);
509 if (!wch->bch.tx_skb)
510 return;
511 count = wch->bch.tx_skb->len - wch->bch.tx_idx;
512 if (count <= 0)
513 return;
514 ptr = wch->bch.tx_skb->data + wch->bch.tx_idx;
515 if (count > W_B_FIFO_THRESH)
516 count = W_B_FIFO_THRESH;
517 else if (test_bit(FLG_HDLC, &wch->bch.Flags))
518 cmd |= W_B_CMDR_XME;
519
520 pr_debug("%s: fill Bfifo%d/%d\n", card->name,
521 count, wch->bch.tx_idx);
522 wch->bch.tx_idx += count;
523 outsb(wch->addr + W_B_XFIFO, ptr, count);
524 WriteW6692B(wch, W_B_CMDR, cmd);
525 if (debug & DEBUG_HW_DFIFO) {
526 snprintf(card->log, 63, "B%1d-send %s %d ",
527 wch->bch.nr, card->name, count);
528 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
529 }
530 }
531
532 static int
533 setvolume(struct w6692_ch *wch, int mic, struct sk_buff *skb)
534 {
535 struct w6692_hw *card = wch->bch.hw;
536 u16 *vol = (u16 *)skb->data;
537 u8 val;
538
539 if ((!(card->fmask & pots)) ||
540 !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
541 return -ENODEV;
542 if (skb->len < 2)
543 return -EINVAL;
544 if (*vol > 7)
545 return -EINVAL;
546 val = *vol & 7;
547 val = 7 - val;
548 if (mic) {
549 val <<= 3;
550 card->xaddr &= 0xc7;
551 } else {
552 card->xaddr &= 0xf8;
553 }
554 card->xaddr |= val;
555 WriteW6692(card, W_XADDR, card->xaddr);
556 return 0;
557 }
558
559 static int
560 enable_pots(struct w6692_ch *wch)
561 {
562 struct w6692_hw *card = wch->bch.hw;
563
564 if ((!(card->fmask & pots)) ||
565 !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
566 return -ENODEV;
567 wch->b_mode |= W_B_MODE_EPCM | W_B_MODE_BSW0;
568 WriteW6692B(wch, W_B_MODE, wch->b_mode);
569 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
570 card->pctl |= ((wch->bch.nr & 2) ? W_PCTL_PCX : 0);
571 WriteW6692(card, W_PCTL, card->pctl);
572 return 0;
573 }
574
575 static int
576 disable_pots(struct w6692_ch *wch)
577 {
578 struct w6692_hw *card = wch->bch.hw;
579
580 if (!(card->fmask & pots))
581 return -ENODEV;
582 wch->b_mode &= ~(W_B_MODE_EPCM | W_B_MODE_BSW0);
583 WriteW6692B(wch, W_B_MODE, wch->b_mode);
584 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
585 W_B_CMDR_XRST);
586 return 0;
587 }
588
589 static int
590 w6692_mode(struct w6692_ch *wch, u32 pr)
591 {
592 struct w6692_hw *card;
593
594 card = wch->bch.hw;
595 pr_debug("%s: B%d protocol %x-->%x\n", card->name,
596 wch->bch.nr, wch->bch.state, pr);
597 switch (pr) {
598 case ISDN_P_NONE:
599 if ((card->fmask & pots) && (wch->b_mode & W_B_MODE_EPCM))
600 disable_pots(wch);
601 wch->b_mode = 0;
602 mISDN_clear_bchannel(&wch->bch);
603 WriteW6692B(wch, W_B_MODE, wch->b_mode);
604 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
605 test_and_clear_bit(FLG_HDLC, &wch->bch.Flags);
606 test_and_clear_bit(FLG_TRANSPARENT, &wch->bch.Flags);
607 break;
608 case ISDN_P_B_RAW:
609 wch->b_mode = W_B_MODE_MMS;
610 WriteW6692B(wch, W_B_MODE, wch->b_mode);
611 WriteW6692B(wch, W_B_EXIM, 0);
612 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
613 W_B_CMDR_XRST);
614 test_and_set_bit(FLG_TRANSPARENT, &wch->bch.Flags);
615 break;
616 case ISDN_P_B_HDLC:
617 wch->b_mode = W_B_MODE_ITF;
618 WriteW6692B(wch, W_B_MODE, wch->b_mode);
619 WriteW6692B(wch, W_B_ADM1, 0xff);
620 WriteW6692B(wch, W_B_ADM2, 0xff);
621 WriteW6692B(wch, W_B_EXIM, 0);
622 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
623 W_B_CMDR_XRST);
624 test_and_set_bit(FLG_HDLC, &wch->bch.Flags);
625 break;
626 default:
627 pr_info("%s: protocol %x not known\n", card->name, pr);
628 return -ENOPROTOOPT;
629 }
630 wch->bch.state = pr;
631 return 0;
632 }
633
634 static void
635 send_next(struct w6692_ch *wch)
636 {
637 if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len)
638 W6692_fill_Bfifo(wch);
639 else {
640 if (wch->bch.tx_skb) {
641 /* send confirm, on trans, free on hdlc. */
642 if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
643 confirm_Bsend(&wch->bch);
644 dev_kfree_skb(wch->bch.tx_skb);
645 }
646 if (get_next_bframe(&wch->bch))
647 W6692_fill_Bfifo(wch);
648 }
649 }
650
651 static void
652 W6692B_interrupt(struct w6692_hw *card, int ch)
653 {
654 struct w6692_ch *wch = &card->bc[ch];
655 int count;
656 u8 stat, star = 0;
657
658 stat = ReadW6692B(wch, W_B_EXIR);
659 pr_debug("%s: B%d EXIR %02x\n", card->name, wch->bch.nr, stat);
660 if (stat & W_B_EXI_RME) {
661 star = ReadW6692B(wch, W_B_STAR);
662 if (star & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) {
663 if ((star & W_B_STAR_RDOV) &&
664 test_bit(FLG_ACTIVE, &wch->bch.Flags)) {
665 pr_debug("%s: B%d RDOV proto=%x\n", card->name,
666 wch->bch.nr, wch->bch.state);
667 #ifdef ERROR_STATISTIC
668 wch->bch.err_rdo++;
669 #endif
670 }
671 if (test_bit(FLG_HDLC, &wch->bch.Flags)) {
672 if (star & W_B_STAR_CRCE) {
673 pr_debug("%s: B%d CRC error\n",
674 card->name, wch->bch.nr);
675 #ifdef ERROR_STATISTIC
676 wch->bch.err_crc++;
677 #endif
678 }
679 if (star & W_B_STAR_RMB) {
680 pr_debug("%s: B%d message abort\n",
681 card->name, wch->bch.nr);
682 #ifdef ERROR_STATISTIC
683 wch->bch.err_inv++;
684 #endif
685 }
686 }
687 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
688 W_B_CMDR_RRST | W_B_CMDR_RACT);
689 if (wch->bch.rx_skb)
690 skb_trim(wch->bch.rx_skb, 0);
691 } else {
692 count = ReadW6692B(wch, W_B_RBCL) &
693 (W_B_FIFO_THRESH - 1);
694 if (count == 0)
695 count = W_B_FIFO_THRESH;
696 W6692_empty_Bfifo(wch, count);
697 recv_Bchannel(&wch->bch, 0);
698 }
699 }
700 if (stat & W_B_EXI_RMR) {
701 if (!(stat & W_B_EXI_RME))
702 star = ReadW6692B(wch, W_B_STAR);
703 if (star & W_B_STAR_RDOV) {
704 pr_debug("%s: B%d RDOV proto=%x\n", card->name,
705 wch->bch.nr, wch->bch.state);
706 #ifdef ERROR_STATISTIC
707 wch->bch.err_rdo++;
708 #endif
709 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
710 W_B_CMDR_RRST | W_B_CMDR_RACT);
711 } else {
712 W6692_empty_Bfifo(wch, W_B_FIFO_THRESH);
713 if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags) &&
714 wch->bch.rx_skb && (wch->bch.rx_skb->len > 0))
715 recv_Bchannel(&wch->bch, 0);
716 }
717 }
718 if (stat & W_B_EXI_RDOV) {
719 /* only if it is not handled yet */
720 if (!(star & W_B_STAR_RDOV)) {
721 pr_debug("%s: B%d RDOV IRQ proto=%x\n", card->name,
722 wch->bch.nr, wch->bch.state);
723 #ifdef ERROR_STATISTIC
724 wch->bch.err_rdo++;
725 #endif
726 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
727 W_B_CMDR_RRST | W_B_CMDR_RACT);
728 }
729 }
730 if (stat & W_B_EXI_XFR) {
731 if (!(stat & (W_B_EXI_RME | W_B_EXI_RMR))) {
732 star = ReadW6692B(wch, W_B_STAR);
733 pr_debug("%s: B%d star %02x\n", card->name,
734 wch->bch.nr, star);
735 }
736 if (star & W_B_STAR_XDOW) {
737 pr_debug("%s: B%d XDOW proto=%x\n", card->name,
738 wch->bch.nr, wch->bch.state);
739 #ifdef ERROR_STATISTIC
740 wch->bch.err_xdu++;
741 #endif
742 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST |
743 W_B_CMDR_RACT);
744 /* resend */
745 if (wch->bch.tx_skb) {
746 if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
747 wch->bch.tx_idx = 0;
748 }
749 }
750 send_next(wch);
751 if (stat & W_B_EXI_XDUN)
752 return; /* handle XDOW only once */
753 }
754 if (stat & W_B_EXI_XDUN) {
755 pr_debug("%s: B%d XDUN proto=%x\n", card->name,
756 wch->bch.nr, wch->bch.state);
757 #ifdef ERROR_STATISTIC
758 wch->bch.err_xdu++;
759 #endif
760 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
761 /* resend */
762 if (wch->bch.tx_skb) {
763 if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
764 wch->bch.tx_idx = 0;
765 }
766 send_next(wch);
767 }
768 }
769
770 static irqreturn_t
771 w6692_irq(int intno, void *dev_id)
772 {
773 struct w6692_hw *card = dev_id;
774 u8 ista;
775
776 spin_lock(&card->lock);
777 ista = ReadW6692(card, W_ISTA);
778 if ((ista | card->imask) == card->imask) {
779 /* possible a shared IRQ reqest */
780 spin_unlock(&card->lock);
781 return IRQ_NONE;
782 }
783 card->irqcnt++;
784 pr_debug("%s: ista %02x\n", card->name, ista);
785 ista &= ~card->imask;
786 if (ista & W_INT_B1_EXI)
787 W6692B_interrupt(card, 0);
788 if (ista & W_INT_B2_EXI)
789 W6692B_interrupt(card, 1);
790 if (ista & W_INT_D_RME)
791 handle_rxD(card);
792 if (ista & W_INT_D_RMR)
793 W6692_empty_Dfifo(card, W_D_FIFO_THRESH);
794 if (ista & W_INT_D_XFR)
795 handle_txD(card);
796 if (ista & W_INT_D_EXI)
797 handle_statusD(card);
798 if (ista & (W_INT_XINT0 | W_INT_XINT1)) /* XINT0/1 - never */
799 pr_debug("%s: W6692 spurious XINT!\n", card->name);
800 /* End IRQ Handler */
801 spin_unlock(&card->lock);
802 return IRQ_HANDLED;
803 }
804
805 static void
806 dbusy_timer_handler(struct dchannel *dch)
807 {
808 struct w6692_hw *card = dch->hw;
809 int rbch, star;
810 u_long flags;
811
812 if (test_bit(FLG_BUSY_TIMER, &dch->Flags)) {
813 spin_lock_irqsave(&card->lock, flags);
814 rbch = ReadW6692(card, W_D_RBCH);
815 star = ReadW6692(card, W_D_STAR);
816 pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n",
817 card->name, rbch, star);
818 if (star & W_D_STAR_XBZ) /* D-Channel Busy */
819 test_and_set_bit(FLG_L1_BUSY, &dch->Flags);
820 else {
821 /* discard frame; reset transceiver */
822 test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags);
823 if (dch->tx_idx)
824 dch->tx_idx = 0;
825 else
826 pr_info("%s: W6692 D-Channel Busy no tx_idx\n",
827 card->name);
828 /* Transmitter reset */
829 WriteW6692(card, W_D_CMDR, W_D_CMDR_XRST);
830 }
831 spin_unlock_irqrestore(&card->lock, flags);
832 }
833 }
834
835 void initW6692(struct w6692_hw *card)
836 {
837 u8 val;
838
839 card->dch.timer.function = (void *)dbusy_timer_handler;
840 card->dch.timer.data = (u_long)&card->dch;
841 init_timer(&card->dch.timer);
842 w6692_mode(&card->bc[0], ISDN_P_NONE);
843 w6692_mode(&card->bc[1], ISDN_P_NONE);
844 WriteW6692(card, W_D_CTL, 0x00);
845 disable_hwirq(card);
846 WriteW6692(card, W_D_SAM, 0xff);
847 WriteW6692(card, W_D_TAM, 0xff);
848 WriteW6692(card, W_D_MODE, W_D_MODE_RACT);
849 card->state = W_L1CMD_RST;
850 ph_command(card, W_L1CMD_RST);
851 ph_command(card, W_L1CMD_ECK);
852 /* enable all IRQ but extern */
853 card->imask = 0x18;
854 WriteW6692(card, W_D_EXIM, 0x00);
855 WriteW6692B(&card->bc[0], W_B_EXIM, 0);
856 WriteW6692B(&card->bc[1], W_B_EXIM, 0);
857 /* Reset D-chan receiver and transmitter */
858 WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST);
859 /* Reset B-chan receiver and transmitter */
860 WriteW6692B(&card->bc[0], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
861 WriteW6692B(&card->bc[1], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
862 /* enable peripheral */
863 if (card->subtype == W6692_USR) {
864 /* seems that USR implemented some power control features
865 * Pin 79 is connected to the oscilator circuit so we
866 * have to handle it here
867 */
868 card->pctl = 0x80;
869 card->xdata = 0;
870 WriteW6692(card, W_PCTL, card->pctl);
871 WriteW6692(card, W_XDATA, card->xdata);
872 } else {
873 card->pctl = W_PCTL_OE5 | W_PCTL_OE4 | W_PCTL_OE2 |
874 W_PCTL_OE1 | W_PCTL_OE0;
875 card->xaddr = 0x00;/* all sw off */
876 if (card->fmask & pots)
877 card->xdata |= 0x06; /* POWER UP/ LED OFF / ALAW */
878 if (card->fmask & led)
879 card->xdata |= 0x04; /* LED OFF */
880 if ((card->fmask & pots) || (card->fmask & led)) {
881 WriteW6692(card, W_PCTL, card->pctl);
882 WriteW6692(card, W_XADDR, card->xaddr);
883 WriteW6692(card, W_XDATA, card->xdata);
884 val = ReadW6692(card, W_XADDR);
885 if (debug & DEBUG_HW)
886 pr_notice("%s: W_XADDR=%02x\n",
887 card->name, val);
888 }
889 }
890 }
891
892 static void
893 reset_w6692(struct w6692_hw *card)
894 {
895 WriteW6692(card, W_D_CTL, W_D_CTL_SRST);
896 mdelay(10);
897 WriteW6692(card, W_D_CTL, 0);
898 }
899
900 static int
901 init_card(struct w6692_hw *card)
902 {
903 int cnt = 3;
904 u_long flags;
905
906 spin_lock_irqsave(&card->lock, flags);
907 disable_hwirq(card);
908 spin_unlock_irqrestore(&card->lock, flags);
909 if (request_irq(card->irq, w6692_irq, IRQF_SHARED, card->name, card)) {
910 pr_info("%s: couldn't get interrupt %d\n", card->name,
911 card->irq);
912 return -EIO;
913 }
914 while (cnt--) {
915 spin_lock_irqsave(&card->lock, flags);
916 initW6692(card);
917 enable_hwirq(card);
918 spin_unlock_irqrestore(&card->lock, flags);
919 /* Timeout 10ms */
920 msleep_interruptible(10);
921 if (debug & DEBUG_HW)
922 pr_notice("%s: IRQ %d count %d\n", card->name,
923 card->irq, card->irqcnt);
924 if (!card->irqcnt) {
925 pr_info("%s: IRQ(%d) getting no IRQs during init %d\n",
926 card->name, card->irq, 3 - cnt);
927 reset_w6692(card);
928 } else
929 return 0;
930 }
931 free_irq(card->irq, card);
932 return -EIO;
933 }
934
935 static int
936 w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
937 {
938 struct bchannel *bch = container_of(ch, struct bchannel, ch);
939 struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch);
940 struct w6692_hw *card = bch->hw;
941 int ret = -EINVAL;
942 struct mISDNhead *hh = mISDN_HEAD_P(skb);
943 u32 id;
944 u_long flags;
945
946 switch (hh->prim) {
947 case PH_DATA_REQ:
948 spin_lock_irqsave(&card->lock, flags);
949 ret = bchannel_senddata(bch, skb);
950 if (ret > 0) { /* direct TX */
951 id = hh->id; /* skb can be freed */
952 ret = 0;
953 W6692_fill_Bfifo(bc);
954 spin_unlock_irqrestore(&card->lock, flags);
955 if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
956 queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
957 } else
958 spin_unlock_irqrestore(&card->lock, flags);
959 return ret;
960 case PH_ACTIVATE_REQ:
961 spin_lock_irqsave(&card->lock, flags);
962 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
963 ret = w6692_mode(bc, ch->protocol);
964 else
965 ret = 0;
966 spin_unlock_irqrestore(&card->lock, flags);
967 if (!ret)
968 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
969 NULL, GFP_KERNEL);
970 break;
971 case PH_DEACTIVATE_REQ:
972 spin_lock_irqsave(&card->lock, flags);
973 mISDN_clear_bchannel(bch);
974 w6692_mode(bc, ISDN_P_NONE);
975 spin_unlock_irqrestore(&card->lock, flags);
976 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
977 NULL, GFP_KERNEL);
978 ret = 0;
979 break;
980 default:
981 pr_info("%s: %s unknown prim(%x,%x)\n",
982 card->name, __func__, hh->prim, hh->id);
983 ret = -EINVAL;
984 }
985 if (!ret)
986 dev_kfree_skb(skb);
987 return ret;
988 }
989
990 static int
991 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
992 {
993 int ret = 0;
994
995 switch (cq->op) {
996 case MISDN_CTRL_GETOP:
997 cq->op = 0;
998 break;
999 /* Nothing implemented yet */
1000 case MISDN_CTRL_FILL_EMPTY:
1001 default:
1002 pr_info("%s: unknown Op %x\n", __func__, cq->op);
1003 ret = -EINVAL;
1004 break;
1005 }
1006 return ret;
1007 }
1008
1009 static int
1010 open_bchannel(struct w6692_hw *card, struct channel_req *rq)
1011 {
1012 struct bchannel *bch;
1013
1014 if (rq->adr.channel > 2)
1015 return -EINVAL;
1016 if (rq->protocol == ISDN_P_NONE)
1017 return -EINVAL;
1018 bch = &card->bc[rq->adr.channel - 1].bch;
1019 if (test_and_set_bit(FLG_OPEN, &bch->Flags))
1020 return -EBUSY; /* b-channel can be only open once */
1021 test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
1022 bch->ch.protocol = rq->protocol;
1023 rq->ch = &bch->ch;
1024 return 0;
1025 }
1026
1027 static int
1028 channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq)
1029 {
1030 int ret = 0;
1031
1032 switch (cq->op) {
1033 case MISDN_CTRL_GETOP:
1034 cq->op = 0;
1035 break;
1036 default:
1037 pr_info("%s: unknown CTRL OP %x\n", card->name, cq->op);
1038 ret = -EINVAL;
1039 break;
1040 }
1041 return ret;
1042 }
1043
1044 static int
1045 w6692_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1046 {
1047 struct bchannel *bch = container_of(ch, struct bchannel, ch);
1048 struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch);
1049 struct w6692_hw *card = bch->hw;
1050 int ret = -EINVAL;
1051 u_long flags;
1052
1053 pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg);
1054 switch (cmd) {
1055 case CLOSE_CHANNEL:
1056 test_and_clear_bit(FLG_OPEN, &bch->Flags);
1057 if (test_bit(FLG_ACTIVE, &bch->Flags)) {
1058 spin_lock_irqsave(&card->lock, flags);
1059 mISDN_freebchannel(bch);
1060 w6692_mode(bc, ISDN_P_NONE);
1061 spin_unlock_irqrestore(&card->lock, flags);
1062 } else {
1063 skb_queue_purge(&bch->rqueue);
1064 bch->rcount = 0;
1065 }
1066 ch->protocol = ISDN_P_NONE;
1067 ch->peer = NULL;
1068 module_put(THIS_MODULE);
1069 ret = 0;
1070 break;
1071 case CONTROL_CHANNEL:
1072 ret = channel_bctrl(bch, arg);
1073 break;
1074 default:
1075 pr_info("%s: %s unknown prim(%x)\n",
1076 card->name, __func__, cmd);
1077 }
1078 return ret;
1079 }
1080
1081 static int
1082 w6692_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
1083 {
1084 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
1085 struct dchannel *dch = container_of(dev, struct dchannel, dev);
1086 struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1087 int ret = -EINVAL;
1088 struct mISDNhead *hh = mISDN_HEAD_P(skb);
1089 u32 id;
1090 u_long flags;
1091
1092 switch (hh->prim) {
1093 case PH_DATA_REQ:
1094 spin_lock_irqsave(&card->lock, flags);
1095 ret = dchannel_senddata(dch, skb);
1096 if (ret > 0) { /* direct TX */
1097 id = hh->id; /* skb can be freed */
1098 W6692_fill_Dfifo(card);
1099 ret = 0;
1100 spin_unlock_irqrestore(&card->lock, flags);
1101 queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
1102 } else
1103 spin_unlock_irqrestore(&card->lock, flags);
1104 return ret;
1105 case PH_ACTIVATE_REQ:
1106 ret = l1_event(dch->l1, hh->prim);
1107 break;
1108 case PH_DEACTIVATE_REQ:
1109 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
1110 ret = l1_event(dch->l1, hh->prim);
1111 break;
1112 }
1113
1114 if (!ret)
1115 dev_kfree_skb(skb);
1116 return ret;
1117 }
1118
1119 static int
1120 w6692_l1callback(struct dchannel *dch, u32 cmd)
1121 {
1122 struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1123 u_long flags;
1124
1125 pr_debug("%s: cmd(%x) state(%02x)\n", card->name, cmd, card->state);
1126 switch (cmd) {
1127 case INFO3_P8:
1128 spin_lock_irqsave(&card->lock, flags);
1129 ph_command(card, W_L1CMD_AR8);
1130 spin_unlock_irqrestore(&card->lock, flags);
1131 break;
1132 case INFO3_P10:
1133 spin_lock_irqsave(&card->lock, flags);
1134 ph_command(card, W_L1CMD_AR10);
1135 spin_unlock_irqrestore(&card->lock, flags);
1136 break;
1137 case HW_RESET_REQ:
1138 spin_lock_irqsave(&card->lock, flags);
1139 if (card->state != W_L1IND_DRD)
1140 ph_command(card, W_L1CMD_RST);
1141 ph_command(card, W_L1CMD_ECK);
1142 spin_unlock_irqrestore(&card->lock, flags);
1143 break;
1144 case HW_DEACT_REQ:
1145 skb_queue_purge(&dch->squeue);
1146 if (dch->tx_skb) {
1147 dev_kfree_skb(dch->tx_skb);
1148 dch->tx_skb = NULL;
1149 }
1150 dch->tx_idx = 0;
1151 if (dch->rx_skb) {
1152 dev_kfree_skb(dch->rx_skb);
1153 dch->rx_skb = NULL;
1154 }
1155 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
1156 if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
1157 del_timer(&dch->timer);
1158 break;
1159 case HW_POWERUP_REQ:
1160 spin_lock_irqsave(&card->lock, flags);
1161 ph_command(card, W_L1CMD_ECK);
1162 spin_unlock_irqrestore(&card->lock, flags);
1163 break;
1164 case PH_ACTIVATE_IND:
1165 test_and_set_bit(FLG_ACTIVE, &dch->Flags);
1166 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
1167 GFP_ATOMIC);
1168 break;
1169 case PH_DEACTIVATE_IND:
1170 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
1171 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
1172 GFP_ATOMIC);
1173 break;
1174 default:
1175 pr_debug("%s: %s unknown command %x\n", card->name,
1176 __func__, cmd);
1177 return -1;
1178 }
1179 return 0;
1180 }
1181
1182 static int
1183 open_dchannel(struct w6692_hw *card, struct channel_req *rq)
1184 {
1185 pr_debug("%s: %s dev(%d) open from %p\n", card->name, __func__,
1186 card->dch.dev.id, __builtin_return_address(1));
1187 if (rq->protocol != ISDN_P_TE_S0)
1188 return -EINVAL;
1189 if (rq->adr.channel == 1)
1190 /* E-Channel not supported */
1191 return -EINVAL;
1192 rq->ch = &card->dch.dev.D;
1193 rq->ch->protocol = rq->protocol;
1194 if (card->dch.state == 7)
1195 _queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
1196 0, NULL, GFP_KERNEL);
1197 return 0;
1198 }
1199
1200 static int
1201 w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1202 {
1203 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
1204 struct dchannel *dch = container_of(dev, struct dchannel, dev);
1205 struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1206 struct channel_req *rq;
1207 int err = 0;
1208
1209 pr_debug("%s: DCTRL: %x %p\n", card->name, cmd, arg);
1210 switch (cmd) {
1211 case OPEN_CHANNEL:
1212 rq = arg;
1213 if (rq->protocol == ISDN_P_TE_S0)
1214 err = open_dchannel(card, rq);
1215 else
1216 err = open_bchannel(card, rq);
1217 if (err)
1218 break;
1219 if (!try_module_get(THIS_MODULE))
1220 pr_info("%s: cannot get module\n", card->name);
1221 break;
1222 case CLOSE_CHANNEL:
1223 pr_debug("%s: dev(%d) close from %p\n", card->name,
1224 dch->dev.id, __builtin_return_address(0));
1225 module_put(THIS_MODULE);
1226 break;
1227 case CONTROL_CHANNEL:
1228 err = channel_ctrl(card, arg);
1229 break;
1230 default:
1231 pr_debug("%s: unknown DCTRL command %x\n", card->name, cmd);
1232 return -EINVAL;
1233 }
1234 return err;
1235 }
1236
1237 static int
1238 setup_w6692(struct w6692_hw *card)
1239 {
1240 u32 val;
1241
1242 if (!request_region(card->addr, 256, card->name)) {
1243 pr_info("%s: config port %x-%x already in use\n", card->name,
1244 card->addr, card->addr + 255);
1245 return -EIO;
1246 }
1247 W6692Version(card);
1248 card->bc[0].addr = card->addr;
1249 card->bc[1].addr = card->addr + 0x40;
1250 val = ReadW6692(card, W_ISTA);
1251 if (debug & DEBUG_HW)
1252 pr_notice("%s ISTA=%02x\n", card->name, val);
1253 val = ReadW6692(card, W_IMASK);
1254 if (debug & DEBUG_HW)
1255 pr_notice("%s IMASK=%02x\n", card->name, val);
1256 val = ReadW6692(card, W_D_EXIR);
1257 if (debug & DEBUG_HW)
1258 pr_notice("%s D_EXIR=%02x\n", card->name, val);
1259 val = ReadW6692(card, W_D_EXIM);
1260 if (debug & DEBUG_HW)
1261 pr_notice("%s D_EXIM=%02x\n", card->name, val);
1262 val = ReadW6692(card, W_D_RSTA);
1263 if (debug & DEBUG_HW)
1264 pr_notice("%s D_RSTA=%02x\n", card->name, val);
1265 return 0;
1266 }
1267
1268 static void
1269 release_card(struct w6692_hw *card)
1270 {
1271 u_long flags;
1272
1273 spin_lock_irqsave(&card->lock, flags);
1274 disable_hwirq(card);
1275 w6692_mode(&card->bc[0], ISDN_P_NONE);
1276 w6692_mode(&card->bc[1], ISDN_P_NONE);
1277 if ((card->fmask & led) || card->subtype == W6692_USR) {
1278 card->xdata |= 0x04; /* LED OFF */
1279 WriteW6692(card, W_XDATA, card->xdata);
1280 }
1281 spin_unlock_irqrestore(&card->lock, flags);
1282 free_irq(card->irq, card);
1283 l1_event(card->dch.l1, CLOSE_CHANNEL);
1284 mISDN_unregister_device(&card->dch.dev);
1285 release_region(card->addr, 256);
1286 mISDN_freebchannel(&card->bc[1].bch);
1287 mISDN_freebchannel(&card->bc[0].bch);
1288 mISDN_freedchannel(&card->dch);
1289 write_lock_irqsave(&card_lock, flags);
1290 list_del(&card->list);
1291 write_unlock_irqrestore(&card_lock, flags);
1292 pci_disable_device(card->pdev);
1293 pci_set_drvdata(card->pdev, NULL);
1294 kfree(card);
1295 }
1296
1297 static int
1298 setup_instance(struct w6692_hw *card)
1299 {
1300 int i, err;
1301 u_long flags;
1302
1303 snprintf(card->name, MISDN_MAX_IDLEN - 1, "w6692.%d", w6692_cnt + 1);
1304 write_lock_irqsave(&card_lock, flags);
1305 list_add_tail(&card->list, &Cards);
1306 write_unlock_irqrestore(&card_lock, flags);
1307 card->fmask = (1 << w6692_cnt);
1308 _set_debug(card);
1309 spin_lock_init(&card->lock);
1310 mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, W6692_ph_bh);
1311 card->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0);
1312 card->dch.dev.D.send = w6692_l2l1D;
1313 card->dch.dev.D.ctrl = w6692_dctrl;
1314 card->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1315 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
1316 card->dch.hw = card;
1317 card->dch.dev.nrbchan = 2;
1318 for (i = 0; i < 2; i++) {
1319 mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM);
1320 card->bc[i].bch.hw = card;
1321 card->bc[i].bch.nr = i + 1;
1322 card->bc[i].bch.ch.nr = i + 1;
1323 card->bc[i].bch.ch.send = w6692_l2l1B;
1324 card->bc[i].bch.ch.ctrl = w6692_bctrl;
1325 set_channelmap(i + 1, card->dch.dev.channelmap);
1326 list_add(&card->bc[i].bch.ch.list, &card->dch.dev.bchannels);
1327 }
1328 err = setup_w6692(card);
1329 if (err)
1330 goto error_setup;
1331 err = mISDN_register_device(&card->dch.dev, &card->pdev->dev,
1332 card->name);
1333 if (err)
1334 goto error_reg;
1335 err = init_card(card);
1336 if (err)
1337 goto error_init;
1338 err = create_l1(&card->dch, w6692_l1callback);
1339 if (!err) {
1340 w6692_cnt++;
1341 pr_notice("W6692 %d cards installed\n", w6692_cnt);
1342 return 0;
1343 }
1344
1345 free_irq(card->irq, card);
1346 error_init:
1347 mISDN_unregister_device(&card->dch.dev);
1348 error_reg:
1349 release_region(card->addr, 256);
1350 error_setup:
1351 mISDN_freebchannel(&card->bc[1].bch);
1352 mISDN_freebchannel(&card->bc[0].bch);
1353 mISDN_freedchannel(&card->dch);
1354 write_lock_irqsave(&card_lock, flags);
1355 list_del(&card->list);
1356 write_unlock_irqrestore(&card_lock, flags);
1357 kfree(card);
1358 return err;
1359 }
1360
1361 static int __devinit
1362 w6692_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1363 {
1364 int err = -ENOMEM;
1365 struct w6692_hw *card;
1366 struct w6692map *m = (struct w6692map *)ent->driver_data;
1367
1368 card = kzalloc(sizeof(struct w6692_hw), GFP_KERNEL);
1369 if (!card) {
1370 pr_info("No kmem for w6692 card\n");
1371 return err;
1372 }
1373 card->pdev = pdev;
1374 card->subtype = m->subtype;
1375 err = pci_enable_device(pdev);
1376 if (err) {
1377 kfree(card);
1378 return err;
1379 }
1380
1381 printk(KERN_INFO "mISDN_w6692: found adapter %s at %s\n",
1382 m->name, pci_name(pdev));
1383
1384 card->addr = pci_resource_start(pdev, 1);
1385 card->irq = pdev->irq;
1386 pci_set_drvdata(pdev, card);
1387 err = setup_instance(card);
1388 if (err)
1389 pci_set_drvdata(pdev, NULL);
1390 return err;
1391 }
1392
1393 static void __devexit
1394 w6692_remove_pci(struct pci_dev *pdev)
1395 {
1396 struct w6692_hw *card = pci_get_drvdata(pdev);
1397
1398 if (card)
1399 release_card(card);
1400 else
1401 if (debug)
1402 pr_notice("%s: drvdata allready removed\n", __func__);
1403 }
1404
1405 static struct pci_device_id w6692_ids[] = {
1406 { PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH,
1407 PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[0]},
1408 { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
1409 PCI_VENDOR_ID_USR, PCI_DEVICE_ID_USR_6692, 0, 0,
1410 (ulong)&w6692_map[2]},
1411 { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
1412 PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[1]},
1413 { }
1414 };
1415 MODULE_DEVICE_TABLE(pci, w6692_ids);
1416
1417 static struct pci_driver w6692_driver = {
1418 .name = "w6692",
1419 .probe = w6692_probe,
1420 .remove = __devexit_p(w6692_remove_pci),
1421 .id_table = w6692_ids,
1422 };
1423
1424 static int __init w6692_init(void)
1425 {
1426 int err;
1427
1428 pr_notice("Winbond W6692 PCI driver Rev. %s\n", W6692_REV);
1429
1430 err = pci_register_driver(&w6692_driver);
1431 return err;
1432 }
1433
1434 static void __exit w6692_cleanup(void)
1435 {
1436 pci_unregister_driver(&w6692_driver);
1437 }
1438
1439 module_init(w6692_init);
1440 module_exit(w6692_cleanup);
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