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Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-jammy-kernel.git] / drivers / isdn / hardware / mISDN / w6692.c
CommitLineData
82c29810 1// SPDX-License-Identifier: GPL-2.0-only
707b2ce6
KK		 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>
707b2ce6
KK		 9 */
10
a6b7a407 11#include <linux/interrupt.h>
707b2ce6
KK		 12#include <linux/module.h>
13#include <linux/pci.h>
14#include <linux/delay.h>
15#include <linux/mISDNhw.h>
5a0e3ad6 16#include <linux/slab.h>
707b2ce6
KK		 17#include "w6692.h"
18
19#define W6692_REV "2.0"
20
21#define DBUSY_TIMER_VALUE 80
22
23enum {
24 W6692_ASUS,
25 W6692_WINBOND,
26 W6692_USR
27};
28
29/* private data in the PCI devices list */
30struct w6692map {
31 u_int subtype;
32 char *name;
33};
34
35static const struct w6692map w6692_map[] =
36{
37 {W6692_ASUS, "Dynalink/AsusCom IS64PH"},
38 {W6692_WINBOND, "Winbond W6692"},
39 {W6692_USR, "USR W6692"}
40};
41
707b2ce6 42#define PCI_DEVICE_ID_USR_6692 0x3409
707b2ce6
KK		 43
44struct w6692_ch {
45 struct bchannel bch;
46 u32 addr;
47 struct timer_list timer;
48 u8 b_mode;
49};
50
51struct 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
71static LIST_HEAD(Cards);
72static DEFINE_RWLOCK(card_lock); /* protect Cards */
73
74static int w6692_cnt;
75static int debug;
76static u32 led;
77static u32 pots;
78
79static 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
87static int
e4dca7b7 88set_debug(const char *val, const struct kernel_param *kp)
707b2ce6
KK		 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
103MODULE_AUTHOR("Karsten Keil");
104MODULE_LICENSE("GPL v2");
105MODULE_VERSION(W6692_REV);
106module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
107MODULE_PARM_DESC(debug, "W6692 debug mask");
108module_param(led, uint, S_IRUGO | S_IWUSR);
109MODULE_PARM_DESC(led, "W6692 LED support bitmask (one bit per card)");
110module_param(pots, uint, S_IRUGO | S_IWUSR);
111MODULE_PARM_DESC(pots, "W6692 POTS support bitmask (one bit per card)");
112
113static inline u8
114ReadW6692(struct w6692_hw *card, u8 offset)
115{
116 return inb(card->addr + offset);
117}
118
119static inline void
120WriteW6692(struct w6692_hw *card, u8 offset, u8 value)
121{
122 outb(value, card->addr + offset);
123}
124
125static inline u8
126ReadW6692B(struct w6692_ch *bc, u8 offset)
127{
128 return inb(bc->addr + offset);
129}
130
131static inline void
132WriteW6692B(struct w6692_ch *bc, u8 offset, u8 value)
133{
134 outb(value, bc->addr + offset);
135}
136
137static void
138enable_hwirq(struct w6692_hw *card)
139{
140 WriteW6692(card, W_IMASK, card->imask);
141}
142
143static void
144disable_hwirq(struct w6692_hw *card)
145{
146 WriteW6692(card, W_IMASK, 0xff);
147}
148
149static const char *W6692Ver[] = {"V00", "V01", "V10", "V11"};
150
151static void
152W6692Version(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,
475be4d8 158 W6692Ver[(val >> 6) & 3]);
707b2ce6
KK		 159}
160
161static void
162w6692_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
175static void
176ph_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
182static void
183W6692_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
190static void
191W6692_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",
475be4d8 235 card->name, card->state, dch->state);
707b2ce6
KK		 236 break;
237 }
238 pr_debug("%s: TE newstate %02x\n", card->name, dch->state);
239}
240
241static void
242W6692_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,
475be4d8 258 dch->rx_skb->len + count);
707b2ce6
KK		 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 ",
475be4d8 267 card->name, count);
707b2ce6
KK		 268 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
269 }
270}
271
272static void
273W6692_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 }
475be4d8 298 dch->timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000);
707b2ce6
KK		 299 add_timer(&dch->timer);
300 if (debug & DEBUG_HW_DFIFO) {
301 snprintf(card->log, 63, "D-send %s %d ",
475be4d8 302 card->name, count);
707b2ce6
KK		 303 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
304 }
305}
306
307static void
308d_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
334static void
335handle_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 if (card->dch.rx_skb)
360 dev_kfree_skb(card->dch.rx_skb);
361 card->dch.rx_skb = NULL;
362 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST);
363 } else {
364 count = ReadW6692(card, W_D_RBCL) & (W_D_FIFO_THRESH - 1);
365 if (count == 0)
366 count = W_D_FIFO_THRESH;
367 W6692_empty_Dfifo(card, count);
368 recv_Dchannel(&card->dch);
369 }
370}
371
372static void
373handle_txD(struct w6692_hw *card) {
374 if (test_and_clear_bit(FLG_BUSY_TIMER, &card->dch.Flags))
375 del_timer(&card->dch.timer);
376 if (card->dch.tx_skb && card->dch.tx_idx < card->dch.tx_skb->len) {
377 W6692_fill_Dfifo(card);
378 } else {
379 if (card->dch.tx_skb)
380 dev_kfree_skb(card->dch.tx_skb);
381 if (get_next_dframe(&card->dch))
382 W6692_fill_Dfifo(card);
383 }
384}
385
386static void
387handle_statusD(struct w6692_hw *card)
388{
389 struct dchannel *dch = &card->dch;
390 u8 exval, v1, cir;
391
392 exval = ReadW6692(card, W_D_EXIR);
393
394 pr_debug("%s: D_EXIR %02x\n", card->name, exval);
395 if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) {
396 /* Transmit underrun/collision */
397 pr_debug("%s: D-channel underrun/collision\n", card->name);
398#ifdef ERROR_STATISTIC
399 dch->err_tx++;
400#endif
401 d_retransmit(card);
402 }
403 if (exval & W_D_EXI_RDOV) { /* RDOV */
404 pr_debug("%s: D-channel RDOV\n", card->name);
405 WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST);
406 }
407 if (exval & W_D_EXI_TIN2) /* TIN2 - never */
408 pr_debug("%s: spurious TIN2 interrupt\n", card->name);
409 if (exval & W_D_EXI_MOC) { /* MOC - not supported */
410 v1 = ReadW6692(card, W_MOSR);
411 pr_debug("%s: spurious MOC interrupt MOSR %02x\n",
475be4d8 412 card->name, v1);
707b2ce6
KK		 413 }
414 if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */
415 cir = ReadW6692(card, W_CIR);
416 pr_debug("%s: ISC CIR %02X\n", card->name, cir);
417 if (cir & W_CIR_ICC) {
418 v1 = cir & W_CIR_COD_MASK;
419 pr_debug("%s: ph_state_change %x -> %x\n", card->name,
475be4d8 420 dch->state, v1);
707b2ce6
KK		 421 card->state = v1;
422 if (card->fmask & led) {
423 switch (v1) {
424 case W_L1IND_AI8:
425 case W_L1IND_AI10:
426 w6692_led_handler(card, 1);
427 break;
428 default:
429 w6692_led_handler(card, 0);
430 break;
431 }
432 }
433 W6692_new_ph(card);
434 }
435 if (cir & W_CIR_SCC) {
436 v1 = ReadW6692(card, W_SQR);
437 pr_debug("%s: SCC SQR %02X\n", card->name, v1);
438 }
439 }
440 if (exval & W_D_EXI_WEXP)
441 pr_debug("%s: spurious WEXP interrupt!\n", card->name);
442 if (exval & W_D_EXI_TEXP)
443 pr_debug("%s: spurious TEXP interrupt!\n", card->name);
444}
445
446static void
447W6692_empty_Bfifo(struct w6692_ch *wch, int count)
448{
449 struct w6692_hw *card = wch->bch.hw;
450 u8 *ptr;
7206e659 451 int maxlen;
707b2ce6
KK		 452
453 pr_debug("%s: empty_Bfifo %d\n", card->name, count);
454 if (unlikely(wch->bch.state == ISDN_P_NONE)) {
455 pr_debug("%s: empty_Bfifo ISDN_P_NONE\n", card->name);
456 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
457 if (wch->bch.rx_skb)
458 skb_trim(wch->bch.rx_skb, 0);
459 return;
460 }
c27b46e7
KK		 461 if (test_bit(FLG_RX_OFF, &wch->bch.Flags)) {
462 wch->bch.dropcnt += count;
463 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
464 return;
465 }
7206e659
KK		 466 maxlen = bchannel_get_rxbuf(&wch->bch, count);
467 if (maxlen < 0) {
707b2ce6 468 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
7206e659
KK		 469 if (wch->bch.rx_skb)
470 skb_trim(wch->bch.rx_skb, 0);
471 pr_warning("%s.B%d: No bufferspace for %d bytes\n",
472 card->name, wch->bch.nr, count);
707b2ce6
KK		 473 return;
474 }
475 ptr = skb_put(wch->bch.rx_skb, count);
476 insb(wch->addr + W_B_RFIFO, ptr, count);
477 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
478 if (debug & DEBUG_HW_DFIFO) {
479 snprintf(card->log, 63, "B%1d-recv %s %d ",
475be4d8 480 wch->bch.nr, card->name, count);
707b2ce6
KK		 481 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
482 }
483}
484
485static void
486W6692_fill_Bfifo(struct w6692_ch *wch)
487{
488 struct w6692_hw *card = wch->bch.hw;
6d1ee48f 489 int count, fillempty = 0;
707b2ce6
KK		 490 u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS;
491
492 pr_debug("%s: fill Bfifo\n", card->name);
6d1ee48f
KK		 493 if (!wch->bch.tx_skb) {
494 if (!test_bit(FLG_TX_EMPTY, &wch->bch.Flags))
495 return;
496 ptr = wch->bch.fill;
497 count = W_B_FIFO_THRESH;
498 fillempty = 1;
499 } else {
500 count = wch->bch.tx_skb->len - wch->bch.tx_idx;
501 if (count <= 0)
502 return;
503 ptr = wch->bch.tx_skb->data + wch->bch.tx_idx;
504 }
707b2ce6
KK		 505 if (count > W_B_FIFO_THRESH)
506 count = W_B_FIFO_THRESH;
507 else if (test_bit(FLG_HDLC, &wch->bch.Flags))
508 cmd |= W_B_CMDR_XME;
509
510 pr_debug("%s: fill Bfifo%d/%d\n", card->name,
475be4d8 511 count, wch->bch.tx_idx);
707b2ce6 512 wch->bch.tx_idx += count;
6d1ee48f
KK		 513 if (fillempty) {
514 while (count > 0) {
515 outsb(wch->addr + W_B_XFIFO, ptr, MISDN_BCH_FILL_SIZE);
516 count -= MISDN_BCH_FILL_SIZE;
517 }
518 } else {
519 outsb(wch->addr + W_B_XFIFO, ptr, count);
520 }
707b2ce6 521 WriteW6692B(wch, W_B_CMDR, cmd);
6d1ee48f 522 if ((debug & DEBUG_HW_BFIFO) && !fillempty) {
707b2ce6 523 snprintf(card->log, 63, "B%1d-send %s %d ",
475be4d8 524 wch->bch.nr, card->name, count);
707b2ce6
KK		 525 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
526 }
527}
528
3e598177 529#if 0
707b2ce6
KK		 530static int
531setvolume(struct w6692_ch *wch, int mic, struct sk_buff *skb)
532{
533 struct w6692_hw *card = wch->bch.hw;
534 u16 *vol = (u16 *)skb->data;
535 u8 val;
536
537 if ((!(card->fmask & pots)) ||
538 !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
539 return -ENODEV;
540 if (skb->len < 2)
541 return -EINVAL;
542 if (*vol > 7)
543 return -EINVAL;
544 val = *vol & 7;
545 val = 7 - val;
546 if (mic) {
547 val <<= 3;
548 card->xaddr &= 0xc7;
549 } else {
550 card->xaddr &= 0xf8;
551 }
552 card->xaddr |= val;
553 WriteW6692(card, W_XADDR, card->xaddr);
554 return 0;
555}
556
557static int
558enable_pots(struct w6692_ch *wch)
559{
560 struct w6692_hw *card = wch->bch.hw;
561
562 if ((!(card->fmask & pots)) ||
563 !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
564 return -ENODEV;
565 wch->b_mode |= W_B_MODE_EPCM | W_B_MODE_BSW0;
566 WriteW6692B(wch, W_B_MODE, wch->b_mode);
567 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
568 card->pctl |= ((wch->bch.nr & 2) ? W_PCTL_PCX : 0);
569 WriteW6692(card, W_PCTL, card->pctl);
570 return 0;
571}
3e598177 572#endif
707b2ce6
KK		 573
574static int
575disable_pots(struct w6692_ch *wch)
576{
577 struct w6692_hw *card = wch->bch.hw;
578
579 if (!(card->fmask & pots))
580 return -ENODEV;
581 wch->b_mode &= ~(W_B_MODE_EPCM | W_B_MODE_BSW0);
582 WriteW6692B(wch, W_B_MODE, wch->b_mode);
583 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
475be4d8 584 W_B_CMDR_XRST);
707b2ce6
KK		 585 return 0;
586}
587
588static int
589w6692_mode(struct w6692_ch *wch, u32 pr)
590{
591 struct w6692_hw *card;
592
593 card = wch->bch.hw;
594 pr_debug("%s: B%d protocol %x-->%x\n", card->name,
475be4d8 595 wch->bch.nr, wch->bch.state, pr);
707b2ce6
KK		 596 switch (pr) {
597 case ISDN_P_NONE:
598 if ((card->fmask & pots) && (wch->b_mode & W_B_MODE_EPCM))
599 disable_pots(wch);
600 wch->b_mode = 0;
601 mISDN_clear_bchannel(&wch->bch);
602 WriteW6692B(wch, W_B_MODE, wch->b_mode);
603 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
604 test_and_clear_bit(FLG_HDLC, &wch->bch.Flags);
605 test_and_clear_bit(FLG_TRANSPARENT, &wch->bch.Flags);
606 break;
607 case ISDN_P_B_RAW:
608 wch->b_mode = W_B_MODE_MMS;
609 WriteW6692B(wch, W_B_MODE, wch->b_mode);
610 WriteW6692B(wch, W_B_EXIM, 0);
611 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
475be4d8 612 W_B_CMDR_XRST);
707b2ce6
KK		 613 test_and_set_bit(FLG_TRANSPARENT, &wch->bch.Flags);
614 break;
615 case ISDN_P_B_HDLC:
616 wch->b_mode = W_B_MODE_ITF;
617 WriteW6692B(wch, W_B_MODE, wch->b_mode);
618 WriteW6692B(wch, W_B_ADM1, 0xff);
619 WriteW6692B(wch, W_B_ADM2, 0xff);
620 WriteW6692B(wch, W_B_EXIM, 0);
621 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
475be4d8 622 W_B_CMDR_XRST);
707b2ce6
KK		 623 test_and_set_bit(FLG_HDLC, &wch->bch.Flags);
624 break;
625 default:
626 pr_info("%s: protocol %x not known\n", card->name, pr);
627 return -ENOPROTOOPT;
628 }
629 wch->bch.state = pr;
630 return 0;
631}
632
633static void
634send_next(struct w6692_ch *wch)
635{
8bfddfbe 636 if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) {
707b2ce6 637 W6692_fill_Bfifo(wch);
8bfddfbe
KK		 638 } else {
639 if (wch->bch.tx_skb)
707b2ce6 640 dev_kfree_skb(wch->bch.tx_skb);
6d1ee48f
KK		 641 if (get_next_bframe(&wch->bch)) {
642 W6692_fill_Bfifo(wch);
643 test_and_clear_bit(FLG_TX_EMPTY, &wch->bch.Flags);
644 } else if (test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) {
707b2ce6 645 W6692_fill_Bfifo(wch);
6d1ee48f 646 }
707b2ce6
KK		 647 }
648}
649
650static void
651W6692B_interrupt(struct w6692_hw *card, int ch)
652{
653 struct w6692_ch *wch = &card->bc[ch];
654 int count;
655 u8 stat, star = 0;
656
657 stat = ReadW6692B(wch, W_B_EXIR);
658 pr_debug("%s: B%d EXIR %02x\n", card->name, wch->bch.nr, stat);
659 if (stat & W_B_EXI_RME) {
660 star = ReadW6692B(wch, W_B_STAR);
661 if (star & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) {
662 if ((star & W_B_STAR_RDOV) &&
663 test_bit(FLG_ACTIVE, &wch->bch.Flags)) {
664 pr_debug("%s: B%d RDOV proto=%x\n", card->name,
475be4d8 665 wch->bch.nr, wch->bch.state);
707b2ce6
KK		 666#ifdef ERROR_STATISTIC
667 wch->bch.err_rdo++;
668#endif
669 }
670 if (test_bit(FLG_HDLC, &wch->bch.Flags)) {
671 if (star & W_B_STAR_CRCE) {
672 pr_debug("%s: B%d CRC error\n",
475be4d8 673 card->name, wch->bch.nr);
707b2ce6
KK		 674#ifdef ERROR_STATISTIC
675 wch->bch.err_crc++;
676#endif
677 }
678 if (star & W_B_STAR_RMB) {
679 pr_debug("%s: B%d message abort\n",
475be4d8 680 card->name, wch->bch.nr);
707b2ce6
KK		 681#ifdef ERROR_STATISTIC
682 wch->bch.err_inv++;
683#endif
684 }
685 }
686 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
475be4d8 687 W_B_CMDR_RRST | W_B_CMDR_RACT);
707b2ce6
KK		 688 if (wch->bch.rx_skb)
689 skb_trim(wch->bch.rx_skb, 0);
690 } else {
691 count = ReadW6692B(wch, W_B_RBCL) &
692 (W_B_FIFO_THRESH - 1);
693 if (count == 0)
694 count = W_B_FIFO_THRESH;
695 W6692_empty_Bfifo(wch, count);
034005a0 696 recv_Bchannel(&wch->bch, 0, false);
707b2ce6
KK		 697 }
698 }
699 if (stat & W_B_EXI_RMR) {
700 if (!(stat & W_B_EXI_RME))
701 star = ReadW6692B(wch, W_B_STAR);
702 if (star & W_B_STAR_RDOV) {
703 pr_debug("%s: B%d RDOV proto=%x\n", card->name,
475be4d8 704 wch->bch.nr, wch->bch.state);
707b2ce6
KK		 705#ifdef ERROR_STATISTIC
706 wch->bch.err_rdo++;
707#endif
708 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
475be4d8 709 W_B_CMDR_RRST | W_B_CMDR_RACT);
707b2ce6
KK		 710 } else {
711 W6692_empty_Bfifo(wch, W_B_FIFO_THRESH);
034005a0
KK		 712 if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
713 recv_Bchannel(&wch->bch, 0, false);
707b2ce6
KK		 714 }
715 }
716 if (stat & W_B_EXI_RDOV) {
717 /* only if it is not handled yet */
718 if (!(star & W_B_STAR_RDOV)) {
719 pr_debug("%s: B%d RDOV IRQ proto=%x\n", card->name,
475be4d8 720 wch->bch.nr, wch->bch.state);
707b2ce6
KK		 721#ifdef ERROR_STATISTIC
722 wch->bch.err_rdo++;
723#endif
724 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
475be4d8 725 W_B_CMDR_RRST | W_B_CMDR_RACT);
707b2ce6
KK		 726 }
727 }
728 if (stat & W_B_EXI_XFR) {
729 if (!(stat & (W_B_EXI_RME | W_B_EXI_RMR))) {
730 star = ReadW6692B(wch, W_B_STAR);
731 pr_debug("%s: B%d star %02x\n", card->name,
475be4d8 732 wch->bch.nr, star);
707b2ce6
KK		 733 }
734 if (star & W_B_STAR_XDOW) {
6d1ee48f
KK		 735 pr_warning("%s: B%d XDOW proto=%x\n", card->name,
736 wch->bch.nr, wch->bch.state);
707b2ce6
KK		 737#ifdef ERROR_STATISTIC
738 wch->bch.err_xdu++;
739#endif
740 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST |
475be4d8 741 W_B_CMDR_RACT);
707b2ce6
KK		 742 /* resend */
743 if (wch->bch.tx_skb) {
744 if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
745 wch->bch.tx_idx = 0;
746 }
747 }
748 send_next(wch);
6d1ee48f 749 if (star & W_B_STAR_XDOW)
707b2ce6
KK		 750 return; /* handle XDOW only once */
751 }
752 if (stat & W_B_EXI_XDUN) {
6d1ee48f
KK		 753 pr_warning("%s: B%d XDUN proto=%x\n", card->name,
754 wch->bch.nr, wch->bch.state);
707b2ce6
KK		 755#ifdef ERROR_STATISTIC
756 wch->bch.err_xdu++;
757#endif
6d1ee48f 758 /* resend - no XRST needed */
707b2ce6
KK		 759 if (wch->bch.tx_skb) {
760 if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
761 wch->bch.tx_idx = 0;
6d1ee48f
KK		 762 } else if (test_bit(FLG_FILLEMPTY, &wch->bch.Flags)) {
763 test_and_set_bit(FLG_TX_EMPTY, &wch->bch.Flags);
707b2ce6
KK		 764 }
765 send_next(wch);
766 }
767}
768
769static irqreturn_t
770w6692_irq(int intno, void *dev_id)
771{
772 struct w6692_hw *card = dev_id;
773 u8 ista;
774
775 spin_lock(&card->lock);
776 ista = ReadW6692(card, W_ISTA);
777 if ((ista | card->imask) == card->imask) {
778 /* possible a shared IRQ reqest */
779 spin_unlock(&card->lock);
780 return IRQ_NONE;
781 }
782 card->irqcnt++;
783 pr_debug("%s: ista %02x\n", card->name, ista);
784 ista &= ~card->imask;
785 if (ista & W_INT_B1_EXI)
786 W6692B_interrupt(card, 0);
787 if (ista & W_INT_B2_EXI)
788 W6692B_interrupt(card, 1);
789 if (ista & W_INT_D_RME)
790 handle_rxD(card);
791 if (ista & W_INT_D_RMR)
792 W6692_empty_Dfifo(card, W_D_FIFO_THRESH);
793 if (ista & W_INT_D_XFR)
794 handle_txD(card);
795 if (ista & W_INT_D_EXI)
796 handle_statusD(card);
797 if (ista & (W_INT_XINT0 | W_INT_XINT1)) /* XINT0/1 - never */
798 pr_debug("%s: W6692 spurious XINT!\n", card->name);
799/* End IRQ Handler */
800 spin_unlock(&card->lock);
801 return IRQ_HANDLED;
802}
803
804static void
e313ac12 805dbusy_timer_handler(struct timer_list *t)
707b2ce6 806{
e313ac12 807 struct dchannel *dch = from_timer(dch, t, timer);
707b2ce6
KK		 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",
475be4d8 817 card->name, rbch, star);
707b2ce6
KK		 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
569e937e 835static void initW6692(struct w6692_hw *card)
707b2ce6
KK		 836{
837 u8 val;
838
e313ac12 839 timer_setup(&card->dch.timer, dbusy_timer_handler, 0);
707b2ce6
KK		 840 w6692_mode(&card->bc[0], ISDN_P_NONE);
841 w6692_mode(&card->bc[1], ISDN_P_NONE);
842 WriteW6692(card, W_D_CTL, 0x00);
843 disable_hwirq(card);
844 WriteW6692(card, W_D_SAM, 0xff);
845 WriteW6692(card, W_D_TAM, 0xff);
846 WriteW6692(card, W_D_MODE, W_D_MODE_RACT);
847 card->state = W_L1CMD_RST;
848 ph_command(card, W_L1CMD_RST);
849 ph_command(card, W_L1CMD_ECK);
850 /* enable all IRQ but extern */
851 card->imask = 0x18;
852 WriteW6692(card, W_D_EXIM, 0x00);
853 WriteW6692B(&card->bc[0], W_B_EXIM, 0);
854 WriteW6692B(&card->bc[1], W_B_EXIM, 0);
855 /* Reset D-chan receiver and transmitter */
856 WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST);
857 /* Reset B-chan receiver and transmitter */
858 WriteW6692B(&card->bc[0], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
859 WriteW6692B(&card->bc[1], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
860 /* enable peripheral */
861 if (card->subtype == W6692_USR) {
862 /* seems that USR implemented some power control features
863 * Pin 79 is connected to the oscilator circuit so we
864 * have to handle it here
865 */
866 card->pctl = 0x80;
867 card->xdata = 0;
868 WriteW6692(card, W_PCTL, card->pctl);
869 WriteW6692(card, W_XDATA, card->xdata);
870 } else {
871 card->pctl = W_PCTL_OE5 | W_PCTL_OE4 | W_PCTL_OE2 |
872 W_PCTL_OE1 | W_PCTL_OE0;
873 card->xaddr = 0x00;/* all sw off */
874 if (card->fmask & pots)
875 card->xdata |= 0x06; /* POWER UP/ LED OFF / ALAW */
876 if (card->fmask & led)
877 card->xdata |= 0x04; /* LED OFF */
878 if ((card->fmask & pots) || (card->fmask & led)) {
879 WriteW6692(card, W_PCTL, card->pctl);
880 WriteW6692(card, W_XADDR, card->xaddr);
881 WriteW6692(card, W_XDATA, card->xdata);
882 val = ReadW6692(card, W_XADDR);
883 if (debug & DEBUG_HW)
884 pr_notice("%s: W_XADDR=%02x\n",
475be4d8 885 card->name, val);
707b2ce6
KK		 886 }
887 }
888}
889
890static void
891reset_w6692(struct w6692_hw *card)
892{
893 WriteW6692(card, W_D_CTL, W_D_CTL_SRST);
894 mdelay(10);
895 WriteW6692(card, W_D_CTL, 0);
896}
897
898static int
899init_card(struct w6692_hw *card)
900{
901 int cnt = 3;
902 u_long flags;
903
904 spin_lock_irqsave(&card->lock, flags);
905 disable_hwirq(card);
906 spin_unlock_irqrestore(&card->lock, flags);
907 if (request_irq(card->irq, w6692_irq, IRQF_SHARED, card->name, card)) {
908 pr_info("%s: couldn't get interrupt %d\n", card->name,
909 card->irq);
910 return -EIO;
911 }
912 while (cnt--) {
913 spin_lock_irqsave(&card->lock, flags);
914 initW6692(card);
915 enable_hwirq(card);
916 spin_unlock_irqrestore(&card->lock, flags);
917 /* Timeout 10ms */
918 msleep_interruptible(10);
919 if (debug & DEBUG_HW)
920 pr_notice("%s: IRQ %d count %d\n", card->name,
475be4d8 921 card->irq, card->irqcnt);
707b2ce6
KK		 922 if (!card->irqcnt) {
923 pr_info("%s: IRQ(%d) getting no IRQs during init %d\n",
924 card->name, card->irq, 3 - cnt);
925 reset_w6692(card);
926 } else
927 return 0;
928 }
929 free_irq(card->irq, card);
930 return -EIO;
931}
932
933static int
934w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
935{
936 struct bchannel *bch = container_of(ch, struct bchannel, ch);
937 struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch);
938 struct w6692_hw *card = bch->hw;
939 int ret = -EINVAL;
940 struct mISDNhead *hh = mISDN_HEAD_P(skb);
8bfddfbe 941 unsigned long flags;
707b2ce6
KK		 942
943 switch (hh->prim) {
944 case PH_DATA_REQ:
945 spin_lock_irqsave(&card->lock, flags);
946 ret = bchannel_senddata(bch, skb);
947 if (ret > 0) { /* direct TX */
707b2ce6
KK		 948 ret = 0;
949 W6692_fill_Bfifo(bc);
8bfddfbe
KK		 950 }
951 spin_unlock_irqrestore(&card->lock, flags);
707b2ce6
KK		 952 return ret;
953 case PH_ACTIVATE_REQ:
954 spin_lock_irqsave(&card->lock, flags);
955 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
956 ret = w6692_mode(bc, ch->protocol);
957 else
958 ret = 0;
959 spin_unlock_irqrestore(&card->lock, flags);
960 if (!ret)
961 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
475be4d8 962 NULL, GFP_KERNEL);
707b2ce6
KK		 963 break;
964 case PH_DEACTIVATE_REQ:
965 spin_lock_irqsave(&card->lock, flags);
966 mISDN_clear_bchannel(bch);
967 w6692_mode(bc, ISDN_P_NONE);
968 spin_unlock_irqrestore(&card->lock, flags);
969 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
475be4d8 970 NULL, GFP_KERNEL);
707b2ce6
KK		 971 ret = 0;
972 break;
973 default:
974 pr_info("%s: %s unknown prim(%x,%x)\n",
975 card->name, __func__, hh->prim, hh->id);
976 ret = -EINVAL;
977 }
978 if (!ret)
979 dev_kfree_skb(skb);
980 return ret;
981}
982
983static int
984channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
985{
034005a0 986 return mISDN_ctrl_bchannel(bch, cq);
707b2ce6
KK		 987}
988
989static int
990open_bchannel(struct w6692_hw *card, struct channel_req *rq)
991{
992 struct bchannel *bch;
993
819a1008 994 if (rq->adr.channel == 0 || rq->adr.channel > 2)
707b2ce6
KK		 995 return -EINVAL;
996 if (rq->protocol == ISDN_P_NONE)
997 return -EINVAL;
998 bch = &card->bc[rq->adr.channel - 1].bch;
999 if (test_and_set_bit(FLG_OPEN, &bch->Flags))
1000 return -EBUSY; /* b-channel can be only open once */
707b2ce6
KK		 1001 bch->ch.protocol = rq->protocol;
1002 rq->ch = &bch->ch;
1003 return 0;
1004}
1005
1006static int
1007channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq)
1008{
1009 int ret = 0;
1010
1011 switch (cq->op) {
1012 case MISDN_CTRL_GETOP:
c626c127
KK		 1013 cq->op = MISDN_CTRL_L1_TIMER3;
1014 break;
1015 case MISDN_CTRL_L1_TIMER3:
1016 ret = l1_event(card->dch.l1, HW_TIMER3_VALUE | (cq->p1 & 0xff));
707b2ce6
KK		 1017 break;
1018 default:
1019 pr_info("%s: unknown CTRL OP %x\n", card->name, cq->op);
1020 ret = -EINVAL;
1021 break;
1022 }
1023 return ret;
1024}
1025
1026static int
1027w6692_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1028{
1029 struct bchannel *bch = container_of(ch, struct bchannel, ch);
1030 struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch);
1031 struct w6692_hw *card = bch->hw;
1032 int ret = -EINVAL;
1033 u_long flags;
1034
1035 pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg);
1036 switch (cmd) {
1037 case CLOSE_CHANNEL:
1038 test_and_clear_bit(FLG_OPEN, &bch->Flags);
4b921eda 1039 cancel_work_sync(&bch->workq);
1368112c 1040 spin_lock_irqsave(&card->lock, flags);
4b921eda 1041 mISDN_clear_bchannel(bch);
1368112c
KK		 1042 w6692_mode(bc, ISDN_P_NONE);
1043 spin_unlock_irqrestore(&card->lock, flags);
707b2ce6
KK		 1044 ch->protocol = ISDN_P_NONE;
1045 ch->peer = NULL;
1046 module_put(THIS_MODULE);
1047 ret = 0;
1048 break;
1049 case CONTROL_CHANNEL:
1050 ret = channel_bctrl(bch, arg);
1051 break;
1052 default:
1053 pr_info("%s: %s unknown prim(%x)\n",
1054 card->name, __func__, cmd);
1055 }
1056 return ret;
1057}
1058
1059static int
1060w6692_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
1061{
1062 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
1063 struct dchannel *dch = container_of(dev, struct dchannel, dev);
1064 struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1065 int ret = -EINVAL;
1066 struct mISDNhead *hh = mISDN_HEAD_P(skb);
1067 u32 id;
1068 u_long flags;
1069
1070 switch (hh->prim) {
1071 case PH_DATA_REQ:
1072 spin_lock_irqsave(&card->lock, flags);
1073 ret = dchannel_senddata(dch, skb);
1074 if (ret > 0) { /* direct TX */
1075 id = hh->id; /* skb can be freed */
1076 W6692_fill_Dfifo(card);
1077 ret = 0;
1078 spin_unlock_irqrestore(&card->lock, flags);
1079 queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
1080 } else
1081 spin_unlock_irqrestore(&card->lock, flags);
1082 return ret;
1083 case PH_ACTIVATE_REQ:
1084 ret = l1_event(dch->l1, hh->prim);
1085 break;
1086 case PH_DEACTIVATE_REQ:
1087 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
1088 ret = l1_event(dch->l1, hh->prim);
1089 break;
1090 }
1091
1092 if (!ret)
1093 dev_kfree_skb(skb);
1094 return ret;
1095}
1096
1097static int
1098w6692_l1callback(struct dchannel *dch, u32 cmd)
1099{
1100 struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1101 u_long flags;
1102
1103 pr_debug("%s: cmd(%x) state(%02x)\n", card->name, cmd, card->state);
1104 switch (cmd) {
1105 case INFO3_P8:
1106 spin_lock_irqsave(&card->lock, flags);
1107 ph_command(card, W_L1CMD_AR8);
1108 spin_unlock_irqrestore(&card->lock, flags);
1109 break;
1110 case INFO3_P10:
1111 spin_lock_irqsave(&card->lock, flags);
1112 ph_command(card, W_L1CMD_AR10);
1113 spin_unlock_irqrestore(&card->lock, flags);
1114 break;
1115 case HW_RESET_REQ:
1116 spin_lock_irqsave(&card->lock, flags);
1117 if (card->state != W_L1IND_DRD)
1118 ph_command(card, W_L1CMD_RST);
1119 ph_command(card, W_L1CMD_ECK);
1120 spin_unlock_irqrestore(&card->lock, flags);
1121 break;
1122 case HW_DEACT_REQ:
1123 skb_queue_purge(&dch->squeue);
1124 if (dch->tx_skb) {
1125 dev_kfree_skb(dch->tx_skb);
1126 dch->tx_skb = NULL;
1127 }
1128 dch->tx_idx = 0;
1129 if (dch->rx_skb) {
1130 dev_kfree_skb(dch->rx_skb);
1131 dch->rx_skb = NULL;
1132 }
1133 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
1134 if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
1135 del_timer(&dch->timer);
1136 break;
1137 case HW_POWERUP_REQ:
1138 spin_lock_irqsave(&card->lock, flags);
1139 ph_command(card, W_L1CMD_ECK);
1140 spin_unlock_irqrestore(&card->lock, flags);
1141 break;
1142 case PH_ACTIVATE_IND:
1143 test_and_set_bit(FLG_ACTIVE, &dch->Flags);
1144 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
475be4d8 1145 GFP_ATOMIC);
707b2ce6
KK		 1146 break;
1147 case PH_DEACTIVATE_IND:
1148 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
1149 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
475be4d8 1150 GFP_ATOMIC);
707b2ce6
KK		 1151 break;
1152 default:
1153 pr_debug("%s: %s unknown command %x\n", card->name,
475be4d8 1154 __func__, cmd);
707b2ce6
KK		 1155 return -1;
1156 }
1157 return 0;
1158}
1159
1160static int
3e7a8716 1161open_dchannel(struct w6692_hw *card, struct channel_req *rq, void *caller)
707b2ce6
KK		 1162{
1163 pr_debug("%s: %s dev(%d) open from %p\n", card->name, __func__,
3e7a8716 1164 card->dch.dev.id, caller);
707b2ce6
KK		 1165 if (rq->protocol != ISDN_P_TE_S0)
1166 return -EINVAL;
1167 if (rq->adr.channel == 1)
1168 /* E-Channel not supported */
1169 return -EINVAL;
1170 rq->ch = &card->dch.dev.D;
1171 rq->ch->protocol = rq->protocol;
1172 if (card->dch.state == 7)
1173 _queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
475be4d8 1174 0, NULL, GFP_KERNEL);
707b2ce6
KK		 1175 return 0;
1176}
1177
1178static int
1179w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1180{
1181 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
1182 struct dchannel *dch = container_of(dev, struct dchannel, dev);
1183 struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1184 struct channel_req *rq;
1185 int err = 0;
1186
1187 pr_debug("%s: DCTRL: %x %p\n", card->name, cmd, arg);
1188 switch (cmd) {
1189 case OPEN_CHANNEL:
1190 rq = arg;
1191 if (rq->protocol == ISDN_P_TE_S0)
3e7a8716 1192 err = open_dchannel(card, rq, __builtin_return_address(0));
707b2ce6
KK		 1193 else
1194 err = open_bchannel(card, rq);
1195 if (err)
1196 break;
1197 if (!try_module_get(THIS_MODULE))
1198 pr_info("%s: cannot get module\n", card->name);
1199 break;
1200 case CLOSE_CHANNEL:
1201 pr_debug("%s: dev(%d) close from %p\n", card->name,
475be4d8 1202 dch->dev.id, __builtin_return_address(0));
707b2ce6
KK		 1203 module_put(THIS_MODULE);
1204 break;
1205 case CONTROL_CHANNEL:
1206 err = channel_ctrl(card, arg);
1207 break;
1208 default:
1209 pr_debug("%s: unknown DCTRL command %x\n", card->name, cmd);
1210 return -EINVAL;
1211 }
1212 return err;
1213}
1214
70034918 1215static int
707b2ce6
KK		 1216setup_w6692(struct w6692_hw *card)
1217{
1218 u32 val;
1219
1220 if (!request_region(card->addr, 256, card->name)) {
1221 pr_info("%s: config port %x-%x already in use\n", card->name,
475be4d8 1222 card->addr, card->addr + 255);
707b2ce6
KK		 1223 return -EIO;
1224 }
1225 W6692Version(card);
1226 card->bc[0].addr = card->addr;
1227 card->bc[1].addr = card->addr + 0x40;
1228 val = ReadW6692(card, W_ISTA);
1229 if (debug & DEBUG_HW)
1230 pr_notice("%s ISTA=%02x\n", card->name, val);
1231 val = ReadW6692(card, W_IMASK);
1232 if (debug & DEBUG_HW)
1233 pr_notice("%s IMASK=%02x\n", card->name, val);
1234 val = ReadW6692(card, W_D_EXIR);
1235 if (debug & DEBUG_HW)
1236 pr_notice("%s D_EXIR=%02x\n", card->name, val);
1237 val = ReadW6692(card, W_D_EXIM);
1238 if (debug & DEBUG_HW)
1239 pr_notice("%s D_EXIM=%02x\n", card->name, val);
1240 val = ReadW6692(card, W_D_RSTA);
1241 if (debug & DEBUG_HW)
1242 pr_notice("%s D_RSTA=%02x\n", card->name, val);
1243 return 0;
1244}
1245
1246static void
1247release_card(struct w6692_hw *card)
1248{
1249 u_long flags;
1250
1251 spin_lock_irqsave(&card->lock, flags);
1252 disable_hwirq(card);
1253 w6692_mode(&card->bc[0], ISDN_P_NONE);
1254 w6692_mode(&card->bc[1], ISDN_P_NONE);
1255 if ((card->fmask & led) || card->subtype == W6692_USR) {
1256 card->xdata |= 0x04; /* LED OFF */
1257 WriteW6692(card, W_XDATA, card->xdata);
1258 }
1259 spin_unlock_irqrestore(&card->lock, flags);
1260 free_irq(card->irq, card);
1261 l1_event(card->dch.l1, CLOSE_CHANNEL);
1262 mISDN_unregister_device(&card->dch.dev);
1263 release_region(card->addr, 256);
1264 mISDN_freebchannel(&card->bc[1].bch);
1265 mISDN_freebchannel(&card->bc[0].bch);
1266 mISDN_freedchannel(&card->dch);
1267 write_lock_irqsave(&card_lock, flags);
1268 list_del(&card->list);
1269 write_unlock_irqrestore(&card_lock, flags);
1270 pci_disable_device(card->pdev);
1271 pci_set_drvdata(card->pdev, NULL);
1272 kfree(card);
1273}
1274
1275static int
1276setup_instance(struct w6692_hw *card)
1277{
1278 int i, err;
1279 u_long flags;
1280
1281 snprintf(card->name, MISDN_MAX_IDLEN - 1, "w6692.%d", w6692_cnt + 1);
1282 write_lock_irqsave(&card_lock, flags);
1283 list_add_tail(&card->list, &Cards);
1284 write_unlock_irqrestore(&card_lock, flags);
1285 card->fmask = (1 << w6692_cnt);
1286 _set_debug(card);
1287 spin_lock_init(&card->lock);
1288 mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, W6692_ph_bh);
1289 card->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0);
1290 card->dch.dev.D.send = w6692_l2l1D;
1291 card->dch.dev.D.ctrl = w6692_dctrl;
1292 card->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1293 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
1294 card->dch.hw = card;
1295 card->dch.dev.nrbchan = 2;
1296 for (i = 0; i < 2; i++) {
034005a0
KK		 1297 mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM,
1298 W_B_FIFO_THRESH);
707b2ce6
KK		 1299 card->bc[i].bch.hw = card;
1300 card->bc[i].bch.nr = i + 1;
1301 card->bc[i].bch.ch.nr = i + 1;
1302 card->bc[i].bch.ch.send = w6692_l2l1B;
1303 card->bc[i].bch.ch.ctrl = w6692_bctrl;
1304 set_channelmap(i + 1, card->dch.dev.channelmap);
1305 list_add(&card->bc[i].bch.ch.list, &card->dch.dev.bchannels);
1306 }
1307 err = setup_w6692(card);
1308 if (err)
1309 goto error_setup;
1310 err = mISDN_register_device(&card->dch.dev, &card->pdev->dev,
475be4d8 1311 card->name);
707b2ce6
KK		 1312 if (err)
1313 goto error_reg;
1314 err = init_card(card);
1315 if (err)
1316 goto error_init;
1317 err = create_l1(&card->dch, w6692_l1callback);
1318 if (!err) {
1319 w6692_cnt++;
1320 pr_notice("W6692 %d cards installed\n", w6692_cnt);
1321 return 0;
1322 }
1323
1324 free_irq(card->irq, card);
1325error_init:
1326 mISDN_unregister_device(&card->dch.dev);
1327error_reg:
1328 release_region(card->addr, 256);
1329error_setup:
1330 mISDN_freebchannel(&card->bc[1].bch);
1331 mISDN_freebchannel(&card->bc[0].bch);
1332 mISDN_freedchannel(&card->dch);
1333 write_lock_irqsave(&card_lock, flags);
1334 list_del(&card->list);
1335 write_unlock_irqrestore(&card_lock, flags);
1336 kfree(card);
1337 return err;
1338}
1339
ed5a84cd 1340static int
707b2ce6
KK		 1341w6692_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1342{
1343 int err = -ENOMEM;
1344 struct w6692_hw *card;
1345 struct w6692map *m = (struct w6692map *)ent->driver_data;
1346
1347 card = kzalloc(sizeof(struct w6692_hw), GFP_KERNEL);
1348 if (!card) {
1349 pr_info("No kmem for w6692 card\n");
1350 return err;
1351 }
1352 card->pdev = pdev;
1353 card->subtype = m->subtype;
1354 err = pci_enable_device(pdev);
1355 if (err) {
1356 kfree(card);
1357 return err;
1358 }
1359
1360 printk(KERN_INFO "mISDN_w6692: found adapter %s at %s\n",
1361 m->name, pci_name(pdev));
1362
1363 card->addr = pci_resource_start(pdev, 1);
1364 card->irq = pdev->irq;
1365 pci_set_drvdata(pdev, card);
1366 err = setup_instance(card);
1367 if (err)
1368 pci_set_drvdata(pdev, NULL);
1369 return err;
1370}
1371
ed5a84cd 1372static void
707b2ce6
KK		 1373w6692_remove_pci(struct pci_dev *pdev)
1374{
1375 struct w6692_hw *card = pci_get_drvdata(pdev);
1376
1377 if (card)
1378 release_card(card);
1379 else
1380 if (debug)
698f9315 1381 pr_notice("%s: drvdata already removed\n", __func__);
707b2ce6
KK		 1382}
1383
e8336ed0 1384static const struct pci_device_id w6692_ids[] = {
707b2ce6
KK		 1385 { PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH,
1386 PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[0]},
1387 { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
1388 PCI_VENDOR_ID_USR, PCI_DEVICE_ID_USR_6692, 0, 0,
1389 (ulong)&w6692_map[2]},
1390 { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
1391 PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[1]},
1392 { }
1393};
1394MODULE_DEVICE_TABLE(pci, w6692_ids);
1395
1396static struct pci_driver w6692_driver = {
1397 .name = "w6692",
1398 .probe = w6692_probe,
ed5a84cd 1399 .remove = w6692_remove_pci,
707b2ce6
KK		 1400 .id_table = w6692_ids,
1401};
1402
1403static int __init w6692_init(void)
1404{
1405 int err;
1406
1407 pr_notice("Winbond W6692 PCI driver Rev. %s\n", W6692_REV);
1408
1409 err = pci_register_driver(&w6692_driver);
1410 return err;
1411}
1412
1413static void __exit w6692_cleanup(void)
1414{
1415 pci_unregister_driver(&w6692_driver);
1416}
1417
1418module_init(w6692_init);
1419module_exit(w6692_cleanup);
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