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mm, vmalloc: remove useless variable in vmap_block
[linux/fpc-iii.git] / drivers / isdn / hisax / w6692.c
blobd8cac69358180ee455c92d99a0c58b8203372203
1 /* $Id: w6692.c,v 1.18.2.4 2004/02/11 13:21:34 keil Exp $
2 *
3 * Winbond W6692 specific routines
4 *
5 * Author Petr Novak
6 * Copyright by Petr Novak <petr.novak@i.cz>
7 *
8 * This software may be used and distributed according to the terms
9 * of the GNU General Public License, incorporated herein by reference.
10 *
11 */
12
13 #include <linux/init.h>
14 #include "hisax.h"
15 #include "w6692.h"
16 #include "isdnl1.h"
17 #include <linux/interrupt.h>
18 #include <linux/pci.h>
19 #include <linux/slab.h>
20
21 /* table entry in the PCI devices list */
22 typedef struct {
23 int vendor_id;
24 int device_id;
25 char *vendor_name;
26 char *card_name;
27 } PCI_ENTRY;
28
29 static const PCI_ENTRY id_list[] =
30 {
31 {PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, "Winbond", "W6692"},
32 {PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH, "Dynalink/AsusCom", "IS64PH"},
33 {0, 0, "U.S.Robotics", "ISDN PCI Card TA"}
34 };
35
36 #define W6692_SV_USR 0x16ec
37 #define W6692_SD_USR 0x3409
38 #define W6692_WINBOND 0
39 #define W6692_DYNALINK 1
40 #define W6692_USR 2
41
42 static const char *w6692_revision = "$Revision: 1.18.2.4 $";
43
44 #define DBUSY_TIMER_VALUE 80
45
46 static char *W6692Ver[] =
47 {"W6692 V00", "W6692 V01", "W6692 V10",
48 "W6692 V11"};
49
50 static void
51 W6692Version(struct IsdnCardState *cs, char *s)
52 {
53 int val;
54
55 val = cs->readW6692(cs, W_D_RBCH);
56 printk(KERN_INFO "%s Winbond W6692 version (%x): %s\n", s, val, W6692Ver[(val >> 6) & 3]);
57 }
58
59 static void
60 ph_command(struct IsdnCardState *cs, unsigned int command)
61 {
62 if (cs->debug & L1_DEB_ISAC)
63 debugl1(cs, "ph_command %x", command);
64 cs->writeisac(cs, W_CIX, command);
65 }
66
67
68 static void
69 W6692_new_ph(struct IsdnCardState *cs)
70 {
71 switch (cs->dc.w6692.ph_state) {
72 case (W_L1CMD_RST):
73 ph_command(cs, W_L1CMD_DRC);
74 l1_msg(cs, HW_RESET | INDICATION, NULL);
75 /* fallthru */
76 case (W_L1IND_CD):
77 l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL);
78 break;
79 case (W_L1IND_DRD):
80 l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
81 break;
82 case (W_L1IND_CE):
83 l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
84 break;
85 case (W_L1IND_LD):
86 l1_msg(cs, HW_RSYNC | INDICATION, NULL);
87 break;
88 case (W_L1IND_ARD):
89 l1_msg(cs, HW_INFO2 | INDICATION, NULL);
90 break;
91 case (W_L1IND_AI8):
92 l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
93 break;
94 case (W_L1IND_AI10):
95 l1_msg(cs, HW_INFO4_P10 | INDICATION, NULL);
96 break;
97 default:
98 break;
99 }
100 }
101
102 static void
103 W6692_bh(struct work_struct *work)
104 {
105 struct IsdnCardState *cs =
106 container_of(work, struct IsdnCardState, tqueue);
107 struct PStack *stptr;
108
109 if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
110 if (cs->debug)
111 debugl1(cs, "D-Channel Busy cleared");
112 stptr = cs->stlist;
113 while (stptr != NULL) {
114 stptr->l1.l1l2(stptr, PH_PAUSE | CONFIRM, NULL);
115 stptr = stptr->next;
116 }
117 }
118 if (test_and_clear_bit(D_L1STATECHANGE, &cs->event))
119 W6692_new_ph(cs);
120 if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
121 DChannel_proc_rcv(cs);
122 if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
123 DChannel_proc_xmt(cs);
124 /*
125 if (test_and_clear_bit(D_RX_MON1, &cs->event))
126 arcofi_fsm(cs, ARCOFI_RX_END, NULL);
127 if (test_and_clear_bit(D_TX_MON1, &cs->event))
128 arcofi_fsm(cs, ARCOFI_TX_END, NULL);
129 */
130 }
131
132 static void
133 W6692_empty_fifo(struct IsdnCardState *cs, int count)
134 {
135 u_char *ptr;
136
137 if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
138 debugl1(cs, "W6692_empty_fifo");
139
140 if ((cs->rcvidx + count) >= MAX_DFRAME_LEN_L1) {
141 if (cs->debug & L1_DEB_WARN)
142 debugl1(cs, "W6692_empty_fifo overrun %d",
143 cs->rcvidx + count);
144 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK);
145 cs->rcvidx = 0;
146 return;
147 }
148 ptr = cs->rcvbuf + cs->rcvidx;
149 cs->rcvidx += count;
150 cs->readW6692fifo(cs, ptr, count);
151 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK);
152 if (cs->debug & L1_DEB_ISAC_FIFO) {
153 char *t = cs->dlog;
154
155 t += sprintf(t, "W6692_empty_fifo cnt %d", count);
156 QuickHex(t, ptr, count);
157 debugl1(cs, cs->dlog);
158 }
159 }
160
161 static void
162 W6692_fill_fifo(struct IsdnCardState *cs)
163 {
164 int count, more;
165 u_char *ptr;
166
167 if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
168 debugl1(cs, "W6692_fill_fifo");
169
170 if (!cs->tx_skb)
171 return;
172
173 count = cs->tx_skb->len;
174 if (count <= 0)
175 return;
176
177 more = 0;
178 if (count > W_D_FIFO_THRESH) {
179 more = !0;
180 count = W_D_FIFO_THRESH;
181 }
182 ptr = cs->tx_skb->data;
183 skb_pull(cs->tx_skb, count);
184 cs->tx_cnt += count;
185 cs->writeW6692fifo(cs, ptr, count);
186 cs->writeW6692(cs, W_D_CMDR, more ? W_D_CMDR_XMS : (W_D_CMDR_XMS | W_D_CMDR_XME));
187 if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
188 debugl1(cs, "W6692_fill_fifo dbusytimer running");
189 del_timer(&cs->dbusytimer);
190 }
191 init_timer(&cs->dbusytimer);
192 cs->dbusytimer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000);
193 add_timer(&cs->dbusytimer);
194 if (cs->debug & L1_DEB_ISAC_FIFO) {
195 char *t = cs->dlog;
196
197 t += sprintf(t, "W6692_fill_fifo cnt %d", count);
198 QuickHex(t, ptr, count);
199 debugl1(cs, cs->dlog);
200 }
201 }
202
203 static void
204 W6692B_empty_fifo(struct BCState *bcs, int count)
205 {
206 u_char *ptr;
207 struct IsdnCardState *cs = bcs->cs;
208
209 if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
210 debugl1(cs, "W6692B_empty_fifo");
211
212 if (bcs->hw.w6692.rcvidx + count > HSCX_BUFMAX) {
213 if (cs->debug & L1_DEB_WARN)
214 debugl1(cs, "W6692B_empty_fifo: incoming packet too large");
215 cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
216 bcs->hw.w6692.rcvidx = 0;
217 return;
218 }
219 ptr = bcs->hw.w6692.rcvbuf + bcs->hw.w6692.rcvidx;
220 bcs->hw.w6692.rcvidx += count;
221 READW6692BFIFO(cs, bcs->channel, ptr, count);
222 cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
223 if (cs->debug & L1_DEB_HSCX_FIFO) {
224 char *t = bcs->blog;
225
226 t += sprintf(t, "W6692B_empty_fifo %c cnt %d",
227 bcs->channel + '1', count);
228 QuickHex(t, ptr, count);
229 debugl1(cs, bcs->blog);
230 }
231 }
232
233 static void
234 W6692B_fill_fifo(struct BCState *bcs)
235 {
236 struct IsdnCardState *cs = bcs->cs;
237 int more, count;
238 u_char *ptr;
239
240 if (!bcs->tx_skb)
241 return;
242 if (bcs->tx_skb->len <= 0)
243 return;
244
245 more = (bcs->mode == L1_MODE_TRANS) ? 1 : 0;
246 if (bcs->tx_skb->len > W_B_FIFO_THRESH) {
247 more = 1;
248 count = W_B_FIFO_THRESH;
249 } else
250 count = bcs->tx_skb->len;
251
252 if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
253 debugl1(cs, "W6692B_fill_fifo%s%d", (more ? " " : " last "), count);
254
255 ptr = bcs->tx_skb->data;
256 skb_pull(bcs->tx_skb, count);
257 bcs->tx_cnt -= count;
258 bcs->hw.w6692.count += count;
259 WRITEW6692BFIFO(cs, bcs->channel, ptr, count);
260 cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACT | W_B_CMDR_XMS | (more ? 0 : W_B_CMDR_XME));
261 if (cs->debug & L1_DEB_HSCX_FIFO) {
262 char *t = bcs->blog;
263
264 t += sprintf(t, "W6692B_fill_fifo %c cnt %d",
265 bcs->channel + '1', count);
266 QuickHex(t, ptr, count);
267 debugl1(cs, bcs->blog);
268 }
269 }
270
271 static void
272 W6692B_interrupt(struct IsdnCardState *cs, u_char bchan)
273 {
274 u_char val;
275 u_char r;
276 struct BCState *bcs;
277 struct sk_buff *skb;
278 int count;
279
280 bcs = (cs->bcs->channel == bchan) ? cs->bcs : (cs->bcs + 1);
281 val = cs->BC_Read_Reg(cs, bchan, W_B_EXIR);
282 debugl1(cs, "W6692B chan %d B_EXIR 0x%02X", bchan, val);
283
284 if (!test_bit(BC_FLG_INIT, &bcs->Flag)) {
285 debugl1(cs, "W6692B not INIT yet");
286 return;
287 }
288 if (val & W_B_EXI_RME) { /* RME */
289 r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
290 if (r & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) {
291 if (cs->debug & L1_DEB_WARN)
292 debugl1(cs, "W6692 B STAR %x", r);
293 if ((r & W_B_STAR_RDOV) && bcs->mode)
294 if (cs->debug & L1_DEB_WARN)
295 debugl1(cs, "W6692 B RDOV mode=%d",
296 bcs->mode);
297 if (r & W_B_STAR_CRCE)
298 if (cs->debug & L1_DEB_WARN)
299 debugl1(cs, "W6692 B CRC error");
300 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RRST | W_B_CMDR_RACT);
301 } else {
302 count = cs->BC_Read_Reg(cs, bchan, W_B_RBCL) & (W_B_FIFO_THRESH - 1);
303 if (count == 0)
304 count = W_B_FIFO_THRESH;
305 W6692B_empty_fifo(bcs, count);
306 if ((count = bcs->hw.w6692.rcvidx) > 0) {
307 if (cs->debug & L1_DEB_HSCX_FIFO)
308 debugl1(cs, "W6692 Bchan Frame %d", count);
309 if (!(skb = dev_alloc_skb(count)))
310 printk(KERN_WARNING "W6692: Bchan receive out of memory\n");
311 else {
312 memcpy(skb_put(skb, count), bcs->hw.w6692.rcvbuf, count);
313 skb_queue_tail(&bcs->rqueue, skb);
314 }
315 }
316 }
317 bcs->hw.w6692.rcvidx = 0;
318 schedule_event(bcs, B_RCVBUFREADY);
319 }
320 if (val & W_B_EXI_RMR) { /* RMR */
321 W6692B_empty_fifo(bcs, W_B_FIFO_THRESH);
322 r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
323 if (r & W_B_STAR_RDOV) {
324 if (cs->debug & L1_DEB_WARN)
325 debugl1(cs, "W6692 B RDOV(RMR) mode=%d", bcs->mode);
326 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RRST | W_B_CMDR_RACT);
327 if (bcs->mode != L1_MODE_TRANS)
328 bcs->hw.w6692.rcvidx = 0;
329 }
330 if (bcs->mode == L1_MODE_TRANS) {
331 /* receive audio data */
332 if (!(skb = dev_alloc_skb(W_B_FIFO_THRESH)))
333 printk(KERN_WARNING "HiSax: receive out of memory\n");
334 else {
335 memcpy(skb_put(skb, W_B_FIFO_THRESH), bcs->hw.w6692.rcvbuf, W_B_FIFO_THRESH);
336 skb_queue_tail(&bcs->rqueue, skb);
337 }
338 bcs->hw.w6692.rcvidx = 0;
339 schedule_event(bcs, B_RCVBUFREADY);
340 }
341 }
342 if (val & W_B_EXI_XDUN) { /* XDUN */
343 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
344 if (cs->debug & L1_DEB_WARN)
345 debugl1(cs, "W6692 B EXIR %x Lost TX", val);
346 if (bcs->mode == 1)
347 W6692B_fill_fifo(bcs);
348 else {
349 /* Here we lost an TX interrupt, so
350 * restart transmitting the whole frame.
351 */
352 if (bcs->tx_skb) {
353 skb_push(bcs->tx_skb, bcs->hw.w6692.count);
354 bcs->tx_cnt += bcs->hw.w6692.count;
355 bcs->hw.w6692.count = 0;
356 }
357 }
358 return;
359 }
360 if (val & W_B_EXI_XFR) { /* XFR */
361 r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
362 if (r & W_B_STAR_XDOW) {
363 if (cs->debug & L1_DEB_WARN)
364 debugl1(cs, "W6692 B STAR %x XDOW", r);
365 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
366 if (bcs->tx_skb && (bcs->mode != 1)) {
367 skb_push(bcs->tx_skb, bcs->hw.w6692.count);
368 bcs->tx_cnt += bcs->hw.w6692.count;
369 bcs->hw.w6692.count = 0;
370 }
371 }
372 if (bcs->tx_skb) {
373 if (bcs->tx_skb->len) {
374 W6692B_fill_fifo(bcs);
375 return;
376 } else {
377 if (test_bit(FLG_LLI_L1WAKEUP, &bcs->st->lli.flag) &&
378 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
379 u_long flags;
380 spin_lock_irqsave(&bcs->aclock, flags);
381 bcs->ackcnt += bcs->hw.w6692.count;
382 spin_unlock_irqrestore(&bcs->aclock, flags);
383 schedule_event(bcs, B_ACKPENDING);
384 }
385 dev_kfree_skb_irq(bcs->tx_skb);
386 bcs->hw.w6692.count = 0;
387 bcs->tx_skb = NULL;
388 }
389 }
390 if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
391 bcs->hw.w6692.count = 0;
392 test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
393 W6692B_fill_fifo(bcs);
394 } else {
395 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
396 schedule_event(bcs, B_XMTBUFREADY);
397 }
398 }
399 }
400
401 static irqreturn_t
402 W6692_interrupt(int intno, void *dev_id)
403 {
404 struct IsdnCardState *cs = dev_id;
405 u_char val, exval, v1;
406 struct sk_buff *skb;
407 u_int count;
408 u_long flags;
409 int icnt = 5;
410
411 spin_lock_irqsave(&cs->lock, flags);
412 val = cs->readW6692(cs, W_ISTA);
413 if (!val) {
414 spin_unlock_irqrestore(&cs->lock, flags);
415 return IRQ_NONE;
416 }
417 StartW6692:
418 if (cs->debug & L1_DEB_ISAC)
419 debugl1(cs, "W6692 ISTA %x", val);
420
421 if (val & W_INT_D_RME) { /* RME */
422 exval = cs->readW6692(cs, W_D_RSTA);
423 if (exval & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) {
424 if (exval & W_D_RSTA_RDOV)
425 if (cs->debug & L1_DEB_WARN)
426 debugl1(cs, "W6692 RDOV");
427 if (exval & W_D_RSTA_CRCE)
428 if (cs->debug & L1_DEB_WARN)
429 debugl1(cs, "W6692 D-channel CRC error");
430 if (exval & W_D_RSTA_RMB)
431 if (cs->debug & L1_DEB_WARN)
432 debugl1(cs, "W6692 D-channel ABORT");
433 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST);
434 } else {
435 count = cs->readW6692(cs, W_D_RBCL) & (W_D_FIFO_THRESH - 1);
436 if (count == 0)
437 count = W_D_FIFO_THRESH;
438 W6692_empty_fifo(cs, count);
439 if ((count = cs->rcvidx) > 0) {
440 cs->rcvidx = 0;
441 if (!(skb = alloc_skb(count, GFP_ATOMIC)))
442 printk(KERN_WARNING "HiSax: D receive out of memory\n");
443 else {
444 memcpy(skb_put(skb, count), cs->rcvbuf, count);
445 skb_queue_tail(&cs->rq, skb);
446 }
447 }
448 }
449 cs->rcvidx = 0;
450 schedule_event(cs, D_RCVBUFREADY);
451 }
452 if (val & W_INT_D_RMR) { /* RMR */
453 W6692_empty_fifo(cs, W_D_FIFO_THRESH);
454 }
455 if (val & W_INT_D_XFR) { /* XFR */
456 if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
457 del_timer(&cs->dbusytimer);
458 if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
459 schedule_event(cs, D_CLEARBUSY);
460 if (cs->tx_skb) {
461 if (cs->tx_skb->len) {
462 W6692_fill_fifo(cs);
463 goto afterXFR;
464 } else {
465 dev_kfree_skb_irq(cs->tx_skb);
466 cs->tx_cnt = 0;
467 cs->tx_skb = NULL;
468 }
469 }
470 if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
471 cs->tx_cnt = 0;
472 W6692_fill_fifo(cs);
473 } else
474 schedule_event(cs, D_XMTBUFREADY);
475 }
476 afterXFR:
477 if (val & (W_INT_XINT0 | W_INT_XINT1)) { /* XINT0/1 - never */
478 if (cs->debug & L1_DEB_ISAC)
479 debugl1(cs, "W6692 spurious XINT!");
480 }
481 if (val & W_INT_D_EXI) { /* EXI */
482 exval = cs->readW6692(cs, W_D_EXIR);
483 if (cs->debug & L1_DEB_WARN)
484 debugl1(cs, "W6692 D_EXIR %02x", exval);
485 if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) { /* Transmit underrun/collision */
486 debugl1(cs, "W6692 D-chan underrun/collision");
487 printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL\n");
488 if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
489 del_timer(&cs->dbusytimer);
490 if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
491 schedule_event(cs, D_CLEARBUSY);
492 if (cs->tx_skb) { /* Restart frame */
493 skb_push(cs->tx_skb, cs->tx_cnt);
494 cs->tx_cnt = 0;
495 W6692_fill_fifo(cs);
496 } else {
497 printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL no skb\n");
498 debugl1(cs, "W6692 XDUN/XCOL no skb");
499 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST);
500 }
501 }
502 if (exval & W_D_EXI_RDOV) { /* RDOV */
503 debugl1(cs, "W6692 D-channel RDOV");
504 printk(KERN_WARNING "HiSax: W6692 D-RDOV\n");
505 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST);
506 }
507 if (exval & W_D_EXI_TIN2) { /* TIN2 - never */
508 debugl1(cs, "W6692 spurious TIN2 interrupt");
509 }
510 if (exval & W_D_EXI_MOC) { /* MOC - not supported */
511 debugl1(cs, "W6692 spurious MOC interrupt");
512 v1 = cs->readW6692(cs, W_MOSR);
513 debugl1(cs, "W6692 MOSR %02x", v1);
514 }
515 if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */
516 v1 = cs->readW6692(cs, W_CIR);
517 if (cs->debug & L1_DEB_ISAC)
518 debugl1(cs, "W6692 ISC CIR=0x%02X", v1);
519 if (v1 & W_CIR_ICC) {
520 cs->dc.w6692.ph_state = v1 & W_CIR_COD_MASK;
521 if (cs->debug & L1_DEB_ISAC)
522 debugl1(cs, "ph_state_change %x", cs->dc.w6692.ph_state);
523 schedule_event(cs, D_L1STATECHANGE);
524 }
525 if (v1 & W_CIR_SCC) {
526 v1 = cs->readW6692(cs, W_SQR);
527 debugl1(cs, "W6692 SCC SQR=0x%02X", v1);
528 }
529 }
530 if (exval & W_D_EXI_WEXP) {
531 debugl1(cs, "W6692 spurious WEXP interrupt!");
532 }
533 if (exval & W_D_EXI_TEXP) {
534 debugl1(cs, "W6692 spurious TEXP interrupt!");
535 }
536 }
537 if (val & W_INT_B1_EXI) {
538 debugl1(cs, "W6692 B channel 1 interrupt");
539 W6692B_interrupt(cs, 0);
540 }
541 if (val & W_INT_B2_EXI) {
542 debugl1(cs, "W6692 B channel 2 interrupt");
543 W6692B_interrupt(cs, 1);
544 }
545 val = cs->readW6692(cs, W_ISTA);
546 if (val && icnt) {
547 icnt--;
548 goto StartW6692;
549 }
550 if (!icnt) {
551 printk(KERN_WARNING "W6692 IRQ LOOP\n");
552 cs->writeW6692(cs, W_IMASK, 0xff);
553 }
554 spin_unlock_irqrestore(&cs->lock, flags);
555 return IRQ_HANDLED;
556 }
557
558 static void
559 W6692_l1hw(struct PStack *st, int pr, void *arg)
560 {
561 struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
562 struct sk_buff *skb = arg;
563 u_long flags;
564 int val;
565
566 switch (pr) {
567 case (PH_DATA | REQUEST):
568 if (cs->debug & DEB_DLOG_HEX)
569 LogFrame(cs, skb->data, skb->len);
570 if (cs->debug & DEB_DLOG_VERBOSE)
571 dlogframe(cs, skb, 0);
572 spin_lock_irqsave(&cs->lock, flags);
573 if (cs->tx_skb) {
574 skb_queue_tail(&cs->sq, skb);
575 #ifdef L2FRAME_DEBUG /* psa */
576 if (cs->debug & L1_DEB_LAPD)
577 Logl2Frame(cs, skb, "PH_DATA Queued", 0);
578 #endif
579 } else {
580 cs->tx_skb = skb;
581 cs->tx_cnt = 0;
582 #ifdef L2FRAME_DEBUG /* psa */
583 if (cs->debug & L1_DEB_LAPD)
584 Logl2Frame(cs, skb, "PH_DATA", 0);
585 #endif
586 W6692_fill_fifo(cs);
587 }
588 spin_unlock_irqrestore(&cs->lock, flags);
589 break;
590 case (PH_PULL | INDICATION):
591 spin_lock_irqsave(&cs->lock, flags);
592 if (cs->tx_skb) {
593 if (cs->debug & L1_DEB_WARN)
594 debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
595 skb_queue_tail(&cs->sq, skb);
596 spin_unlock_irqrestore(&cs->lock, flags);
597 break;
598 }
599 if (cs->debug & DEB_DLOG_HEX)
600 LogFrame(cs, skb->data, skb->len);
601 if (cs->debug & DEB_DLOG_VERBOSE)
602 dlogframe(cs, skb, 0);
603 cs->tx_skb = skb;
604 cs->tx_cnt = 0;
605 #ifdef L2FRAME_DEBUG /* psa */
606 if (cs->debug & L1_DEB_LAPD)
607 Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
608 #endif
609 W6692_fill_fifo(cs);
610 spin_unlock_irqrestore(&cs->lock, flags);
611 break;
612 case (PH_PULL | REQUEST):
613 #ifdef L2FRAME_DEBUG /* psa */
614 if (cs->debug & L1_DEB_LAPD)
615 debugl1(cs, "-> PH_REQUEST_PULL");
616 #endif
617 if (!cs->tx_skb) {
618 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
619 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
620 } else
621 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
622 break;
623 case (HW_RESET | REQUEST):
624 spin_lock_irqsave(&cs->lock, flags);
625 if ((cs->dc.w6692.ph_state == W_L1IND_DRD)) {
626 ph_command(cs, W_L1CMD_ECK);
627 spin_unlock_irqrestore(&cs->lock, flags);
628 } else {
629 ph_command(cs, W_L1CMD_RST);
630 cs->dc.w6692.ph_state = W_L1CMD_RST;
631 spin_unlock_irqrestore(&cs->lock, flags);
632 W6692_new_ph(cs);
633 }
634 break;
635 case (HW_ENABLE | REQUEST):
636 spin_lock_irqsave(&cs->lock, flags);
637 ph_command(cs, W_L1CMD_ECK);
638 spin_unlock_irqrestore(&cs->lock, flags);
639 break;
640 case (HW_INFO3 | REQUEST):
641 spin_lock_irqsave(&cs->lock, flags);
642 ph_command(cs, W_L1CMD_AR8);
643 spin_unlock_irqrestore(&cs->lock, flags);
644 break;
645 case (HW_TESTLOOP | REQUEST):
646 val = 0;
647 if (1 & (long) arg)
648 val |= 0x0c;
649 if (2 & (long) arg)
650 val |= 0x3;
651 /* !!! not implemented yet */
652 break;
653 case (HW_DEACTIVATE | RESPONSE):
654 skb_queue_purge(&cs->rq);
655 skb_queue_purge(&cs->sq);
656 if (cs->tx_skb) {
657 dev_kfree_skb_any(cs->tx_skb);
658 cs->tx_skb = NULL;
659 }
660 if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
661 del_timer(&cs->dbusytimer);
662 if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
663 schedule_event(cs, D_CLEARBUSY);
664 break;
665 default:
666 if (cs->debug & L1_DEB_WARN)
667 debugl1(cs, "W6692_l1hw unknown %04x", pr);
668 break;
669 }
670 }
671
672 static void
673 setstack_W6692(struct PStack *st, struct IsdnCardState *cs)
674 {
675 st->l1.l1hw = W6692_l1hw;
676 }
677
678 static void
679 DC_Close_W6692(struct IsdnCardState *cs)
680 {
681 }
682
683 static void
684 dbusy_timer_handler(struct IsdnCardState *cs)
685 {
686 struct PStack *stptr;
687 int rbch, star;
688 u_long flags;
689
690 spin_lock_irqsave(&cs->lock, flags);
691 if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
692 rbch = cs->readW6692(cs, W_D_RBCH);
693 star = cs->readW6692(cs, W_D_STAR);
694 if (cs->debug)
695 debugl1(cs, "D-Channel Busy D_RBCH %02x D_STAR %02x",
696 rbch, star);
697 if (star & W_D_STAR_XBZ) { /* D-Channel Busy */
698 test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags);
699 stptr = cs->stlist;
700 while (stptr != NULL) {
701 stptr->l1.l1l2(stptr, PH_PAUSE | INDICATION, NULL);
702 stptr = stptr->next;
703 }
704 } else {
705 /* discard frame; reset transceiver */
706 test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags);
707 if (cs->tx_skb) {
708 dev_kfree_skb_any(cs->tx_skb);
709 cs->tx_cnt = 0;
710 cs->tx_skb = NULL;
711 } else {
712 printk(KERN_WARNING "HiSax: W6692 D-Channel Busy no skb\n");
713 debugl1(cs, "D-Channel Busy no skb");
714 }
715 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST); /* Transmitter reset */
716 spin_unlock_irqrestore(&cs->lock, flags);
717 cs->irq_func(cs->irq, cs);
718 return;
719 }
720 }
721 spin_unlock_irqrestore(&cs->lock, flags);
722 }
723
724 static void
725 W6692Bmode(struct BCState *bcs, int mode, int bchan)
726 {
727 struct IsdnCardState *cs = bcs->cs;
728
729 if (cs->debug & L1_DEB_HSCX)
730 debugl1(cs, "w6692 %c mode %d ichan %d",
731 '1' + bchan, mode, bchan);
732 bcs->mode = mode;
733 bcs->channel = bchan;
734 bcs->hw.w6692.bchan = bchan;
735
736 switch (mode) {
737 case (L1_MODE_NULL):
738 cs->BC_Write_Reg(cs, bchan, W_B_MODE, 0);
739 break;
740 case (L1_MODE_TRANS):
741 cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_MMS);
742 break;
743 case (L1_MODE_HDLC):
744 cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_ITF);
745 cs->BC_Write_Reg(cs, bchan, W_B_ADM1, 0xff);
746 cs->BC_Write_Reg(cs, bchan, W_B_ADM2, 0xff);
747 break;
748 }
749 if (mode)
750 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RRST |
751 W_B_CMDR_RACT | W_B_CMDR_XRST);
752 cs->BC_Write_Reg(cs, bchan, W_B_EXIM, 0x00);
753 }
754
755 static void
756 W6692_l2l1(struct PStack *st, int pr, void *arg)
757 {
758 struct sk_buff *skb = arg;
759 struct BCState *bcs = st->l1.bcs;
760 u_long flags;
761
762 switch (pr) {
763 case (PH_DATA | REQUEST):
764 spin_lock_irqsave(&bcs->cs->lock, flags);
765 if (bcs->tx_skb) {
766 skb_queue_tail(&bcs->squeue, skb);
767 } else {
768 bcs->tx_skb = skb;
769 test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
770 bcs->hw.w6692.count = 0;
771 bcs->cs->BC_Send_Data(bcs);
772 }
773 spin_unlock_irqrestore(&bcs->cs->lock, flags);
774 break;
775 case (PH_PULL | INDICATION):
776 if (bcs->tx_skb) {
777 printk(KERN_WARNING "W6692_l2l1: this shouldn't happen\n");
778 break;
779 }
780 spin_lock_irqsave(&bcs->cs->lock, flags);
781 test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
782 bcs->tx_skb = skb;
783 bcs->hw.w6692.count = 0;
784 bcs->cs->BC_Send_Data(bcs);
785 spin_unlock_irqrestore(&bcs->cs->lock, flags);
786 break;
787 case (PH_PULL | REQUEST):
788 if (!bcs->tx_skb) {
789 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
790 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
791 } else
792 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
793 break;
794 case (PH_ACTIVATE | REQUEST):
795 spin_lock_irqsave(&bcs->cs->lock, flags);
796 test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
797 W6692Bmode(bcs, st->l1.mode, st->l1.bc);
798 spin_unlock_irqrestore(&bcs->cs->lock, flags);
799 l1_msg_b(st, pr, arg);
800 break;
801 case (PH_DEACTIVATE | REQUEST):
802 l1_msg_b(st, pr, arg);
803 break;
804 case (PH_DEACTIVATE | CONFIRM):
805 spin_lock_irqsave(&bcs->cs->lock, flags);
806 test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
807 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
808 W6692Bmode(bcs, 0, st->l1.bc);
809 spin_unlock_irqrestore(&bcs->cs->lock, flags);
810 st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
811 break;
812 }
813 }
814
815 static void
816 close_w6692state(struct BCState *bcs)
817 {
818 W6692Bmode(bcs, 0, bcs->channel);
819 if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
820 kfree(bcs->hw.w6692.rcvbuf);
821 bcs->hw.w6692.rcvbuf = NULL;
822 kfree(bcs->blog);
823 bcs->blog = NULL;
824 skb_queue_purge(&bcs->rqueue);
825 skb_queue_purge(&bcs->squeue);
826 if (bcs->tx_skb) {
827 dev_kfree_skb_any(bcs->tx_skb);
828 bcs->tx_skb = NULL;
829 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
830 }
831 }
832 }
833
834 static int
835 open_w6692state(struct IsdnCardState *cs, struct BCState *bcs)
836 {
837 if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
838 if (!(bcs->hw.w6692.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) {
839 printk(KERN_WARNING
840 "HiSax: No memory for w6692.rcvbuf\n");
841 test_and_clear_bit(BC_FLG_INIT, &bcs->Flag);
842 return (1);
843 }
844 if (!(bcs->blog = kmalloc(MAX_BLOG_SPACE, GFP_ATOMIC))) {
845 printk(KERN_WARNING
846 "HiSax: No memory for bcs->blog\n");
847 test_and_clear_bit(BC_FLG_INIT, &bcs->Flag);
848 kfree(bcs->hw.w6692.rcvbuf);
849 bcs->hw.w6692.rcvbuf = NULL;
850 return (2);
851 }
852 skb_queue_head_init(&bcs->rqueue);
853 skb_queue_head_init(&bcs->squeue);
854 }
855 bcs->tx_skb = NULL;
856 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
857 bcs->event = 0;
858 bcs->hw.w6692.rcvidx = 0;
859 bcs->tx_cnt = 0;
860 return (0);
861 }
862
863 static int
864 setstack_w6692(struct PStack *st, struct BCState *bcs)
865 {
866 bcs->channel = st->l1.bc;
867 if (open_w6692state(st->l1.hardware, bcs))
868 return (-1);
869 st->l1.bcs = bcs;
870 st->l2.l2l1 = W6692_l2l1;
871 setstack_manager(st);
872 bcs->st = st;
873 setstack_l1_B(st);
874 return (0);
875 }
876
877 static void resetW6692(struct IsdnCardState *cs)
878 {
879 cs->writeW6692(cs, W_D_CTL, W_D_CTL_SRST);
880 mdelay(10);
881 cs->writeW6692(cs, W_D_CTL, 0x00);
882 mdelay(10);
883 cs->writeW6692(cs, W_IMASK, 0xff);
884 cs->writeW6692(cs, W_D_SAM, 0xff);
885 cs->writeW6692(cs, W_D_TAM, 0xff);
886 cs->writeW6692(cs, W_D_EXIM, 0x00);
887 cs->writeW6692(cs, W_D_MODE, W_D_MODE_RACT);
888 cs->writeW6692(cs, W_IMASK, 0x18);
889 if (cs->subtyp == W6692_USR) {
890 /* seems that USR implemented some power control features
891 * Pin 79 is connected to the oscilator circuit so we
892 * have to handle it here
893 */
894 cs->writeW6692(cs, W_PCTL, 0x80);
895 cs->writeW6692(cs, W_XDATA, 0x00);
896 }
897 }
898
899 static void initW6692(struct IsdnCardState *cs, int part)
900 {
901 if (part & 1) {
902 cs->setstack_d = setstack_W6692;
903 cs->DC_Close = DC_Close_W6692;
904 cs->dbusytimer.function = (void *) dbusy_timer_handler;
905 cs->dbusytimer.data = (long) cs;
906 init_timer(&cs->dbusytimer);
907 resetW6692(cs);
908 ph_command(cs, W_L1CMD_RST);
909 cs->dc.w6692.ph_state = W_L1CMD_RST;
910 W6692_new_ph(cs);
911 ph_command(cs, W_L1CMD_ECK);
912
913 cs->bcs[0].BC_SetStack = setstack_w6692;
914 cs->bcs[1].BC_SetStack = setstack_w6692;
915 cs->bcs[0].BC_Close = close_w6692state;
916 cs->bcs[1].BC_Close = close_w6692state;
917 W6692Bmode(cs->bcs, 0, 0);
918 W6692Bmode(cs->bcs + 1, 0, 0);
919 }
920 if (part & 2) {
921 /* Reenable all IRQ */
922 cs->writeW6692(cs, W_IMASK, 0x18);
923 cs->writeW6692(cs, W_D_EXIM, 0x00);
924 cs->BC_Write_Reg(cs, 0, W_B_EXIM, 0x00);
925 cs->BC_Write_Reg(cs, 1, W_B_EXIM, 0x00);
926 /* Reset D-chan receiver and transmitter */
927 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST);
928 }
929 }
930
931 /* Interface functions */
932
933 static u_char
934 ReadW6692(struct IsdnCardState *cs, u_char offset)
935 {
936 return (inb(cs->hw.w6692.iobase + offset));
937 }
938
939 static void
940 WriteW6692(struct IsdnCardState *cs, u_char offset, u_char value)
941 {
942 outb(value, cs->hw.w6692.iobase + offset);
943 }
944
945 static void
946 ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
947 {
948 insb(cs->hw.w6692.iobase + W_D_RFIFO, data, size);
949 }
950
951 static void
952 WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
953 {
954 outsb(cs->hw.w6692.iobase + W_D_XFIFO, data, size);
955 }
956
957 static u_char
958 ReadW6692B(struct IsdnCardState *cs, int bchan, u_char offset)
959 {
960 return (inb(cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset));
961 }
962
963 static void
964 WriteW6692B(struct IsdnCardState *cs, int bchan, u_char offset, u_char value)
965 {
966 outb(value, cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset);
967 }
968
969 static int
970 w6692_card_msg(struct IsdnCardState *cs, int mt, void *arg)
971 {
972 switch (mt) {
973 case CARD_RESET:
974 resetW6692(cs);
975 return (0);
976 case CARD_RELEASE:
977 cs->writeW6692(cs, W_IMASK, 0xff);
978 release_region(cs->hw.w6692.iobase, 256);
979 if (cs->subtyp == W6692_USR) {
980 cs->writeW6692(cs, W_XDATA, 0x04);
981 }
982 return (0);
983 case CARD_INIT:
984 initW6692(cs, 3);
985 return (0);
986 case CARD_TEST:
987 return (0);
988 }
989 return (0);
990 }
991
992 static int id_idx;
993
994 static struct pci_dev *dev_w6692 = NULL;
995
996 int setup_w6692(struct IsdnCard *card)
997 {
998 struct IsdnCardState *cs = card->cs;
999 char tmp[64];
1000 u_char found = 0;
1001 u_char pci_irq = 0;
1002 u_int pci_ioaddr = 0;
1003
1004 strcpy(tmp, w6692_revision);
1005 printk(KERN_INFO "HiSax: W6692 driver Rev. %s\n", HiSax_getrev(tmp));
1006 if (cs->typ != ISDN_CTYPE_W6692)
1007 return (0);
1008
1009 while (id_list[id_idx].vendor_id) {
1010 dev_w6692 = hisax_find_pci_device(id_list[id_idx].vendor_id,
1011 id_list[id_idx].device_id,
1012 dev_w6692);
1013 if (dev_w6692) {
1014 if (pci_enable_device(dev_w6692))
1015 continue;
1016 cs->subtyp = id_idx;
1017 break;
1018 }
1019 id_idx++;
1020 }
1021 if (dev_w6692) {
1022 found = 1;
1023 pci_irq = dev_w6692->irq;
1024 /* I think address 0 is allways the configuration area */
1025 /* and address 1 is the real IO space KKe 03.09.99 */
1026 pci_ioaddr = pci_resource_start(dev_w6692, 1);
1027 /* USR ISDN PCI card TA need some special handling */
1028 if (cs->subtyp == W6692_WINBOND) {
1029 if ((W6692_SV_USR == dev_w6692->subsystem_vendor) &&
1030 (W6692_SD_USR == dev_w6692->subsystem_device)) {
1031 cs->subtyp = W6692_USR;
1032 }
1033 }
1034 }
1035 if (!found) {
1036 printk(KERN_WARNING "W6692: No PCI card found\n");
1037 return (0);
1038 }
1039 cs->irq = pci_irq;
1040 if (!cs->irq) {
1041 printk(KERN_WARNING "W6692: No IRQ for PCI card found\n");
1042 return (0);
1043 }
1044 if (!pci_ioaddr) {
1045 printk(KERN_WARNING "W6692: NO I/O Base Address found\n");
1046 return (0);
1047 }
1048 cs->hw.w6692.iobase = pci_ioaddr;
1049 printk(KERN_INFO "Found: %s %s, I/O base: 0x%x, irq: %d\n",
1050 id_list[cs->subtyp].vendor_name, id_list[cs->subtyp].card_name,
1051 pci_ioaddr, pci_irq);
1052 if (!request_region(cs->hw.w6692.iobase, 256, id_list[cs->subtyp].card_name)) {
1053 printk(KERN_WARNING
1054 "HiSax: %s I/O ports %x-%x already in use\n",
1055 id_list[cs->subtyp].card_name,
1056 cs->hw.w6692.iobase,
1057 cs->hw.w6692.iobase + 255);
1058 return (0);
1059 }
1060
1061 printk(KERN_INFO
1062 "HiSax: %s config irq:%d I/O:%x\n",
1063 id_list[cs->subtyp].card_name, cs->irq,
1064 cs->hw.w6692.iobase);
1065
1066 INIT_WORK(&cs->tqueue, W6692_bh);
1067 cs->readW6692 = &ReadW6692;
1068 cs->writeW6692 = &WriteW6692;
1069 cs->readisacfifo = &ReadISACfifo;
1070 cs->writeisacfifo = &WriteISACfifo;
1071 cs->BC_Read_Reg = &ReadW6692B;
1072 cs->BC_Write_Reg = &WriteW6692B;
1073 cs->BC_Send_Data = &W6692B_fill_fifo;
1074 cs->cardmsg = &w6692_card_msg;
1075 cs->irq_func = &W6692_interrupt;
1076 cs->irq_flags |= IRQF_SHARED;
1077 W6692Version(cs, "W6692:");
1078 printk(KERN_INFO "W6692 ISTA=0x%X\n", ReadW6692(cs, W_ISTA));
1079 printk(KERN_INFO "W6692 IMASK=0x%X\n", ReadW6692(cs, W_IMASK));
1080 printk(KERN_INFO "W6692 D_EXIR=0x%X\n", ReadW6692(cs, W_D_EXIR));
1081 printk(KERN_INFO "W6692 D_EXIM=0x%X\n", ReadW6692(cs, W_D_EXIM));
1082 printk(KERN_INFO "W6692 D_RSTA=0x%X\n", ReadW6692(cs, W_D_RSTA));
1083 return (1);
1084 }
Linux with added FPC-III support