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shm: fix shmctl(SHM_INFO) lockup with !CONFIG_SHMEM
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / isdn / hisax / w6692.c
blobbb1c8dd1a230463910283ad6b5017f94769138f8
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
20 /* table entry in the PCI devices list */
21 typedef struct {
22 int vendor_id;
23 int device_id;
24 char *vendor_name;
25 char *card_name;
26 } PCI_ENTRY;
27
28 static const PCI_ENTRY id_list[] =
29 {
30 {PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, "Winbond", "W6692"},
31 {PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH, "Dynalink/AsusCom", "IS64PH"},
32 {0, 0, "U.S.Robotics", "ISDN PCI Card TA"}
33 };
34
35 #define W6692_SV_USR 0x16ec
36 #define W6692_SD_USR 0x3409
37 #define W6692_WINBOND 0
38 #define W6692_DYNALINK 1
39 #define W6692_USR 2
40
41 static const char *w6692_revision = "$Revision: 1.18.2.4 $";
42
43 #define DBUSY_TIMER_VALUE 80
44
45 static char *W6692Ver[] =
46 {"W6692 V00", "W6692 V01", "W6692 V10",
47 "W6692 V11"};
48
49 static void
50 W6692Version(struct IsdnCardState *cs, char *s)
51 {
52 int val;
53
54 val = cs->readW6692(cs, W_D_RBCH);
55 printk(KERN_INFO "%s Winbond W6692 version (%x): %s\n", s, val, W6692Ver[(val >> 6) & 3]);
56 }
57
58 static void
59 ph_command(struct IsdnCardState *cs, unsigned int command)
60 {
61 if (cs->debug & L1_DEB_ISAC)
62 debugl1(cs, "ph_command %x", command);
63 cs->writeisac(cs, W_CIX, command);
64 }
65
66
67 static void
68 W6692_new_ph(struct IsdnCardState *cs)
69 {
70 switch (cs->dc.w6692.ph_state) {
71 case (W_L1CMD_RST):
72 ph_command(cs, W_L1CMD_DRC);
73 l1_msg(cs, HW_RESET | INDICATION, NULL);
74 /* fallthru */
75 case (W_L1IND_CD):
76 l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL);
77 break;
78 case (W_L1IND_DRD):
79 l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
80 break;
81 case (W_L1IND_CE):
82 l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
83 break;
84 case (W_L1IND_LD):
85 l1_msg(cs, HW_RSYNC | INDICATION, NULL);
86 break;
87 case (W_L1IND_ARD):
88 l1_msg(cs, HW_INFO2 | INDICATION, NULL);
89 break;
90 case (W_L1IND_AI8):
91 l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
92 break;
93 case (W_L1IND_AI10):
94 l1_msg(cs, HW_INFO4_P10 | INDICATION, NULL);
95 break;
96 default:
97 break;
98 }
99 }
100
101 static void
102 W6692_bh(struct work_struct *work)
103 {
104 struct IsdnCardState *cs =
105 container_of(work, struct IsdnCardState, tqueue);
106 struct PStack *stptr;
107
108 if (!cs)
109 return;
110 if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
111 if (cs->debug)
112 debugl1(cs, "D-Channel Busy cleared");
113 stptr = cs->stlist;
114 while (stptr != NULL) {
115 stptr->l1.l1l2(stptr, PH_PAUSE | CONFIRM, NULL);
116 stptr = stptr->next;
117 }
118 }
119 if (test_and_clear_bit(D_L1STATECHANGE, &cs->event))
120 W6692_new_ph(cs);
121 if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
122 DChannel_proc_rcv(cs);
123 if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
124 DChannel_proc_xmt(cs);
125 /*
126 if (test_and_clear_bit(D_RX_MON1, &cs->event))
127 arcofi_fsm(cs, ARCOFI_RX_END, NULL);
128 if (test_and_clear_bit(D_TX_MON1, &cs->event))
129 arcofi_fsm(cs, ARCOFI_TX_END, NULL);
130 */
131 }
132
133 static void
134 W6692_empty_fifo(struct IsdnCardState *cs, int count)
135 {
136 u_char *ptr;
137
138 if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
139 debugl1(cs, "W6692_empty_fifo");
140
141 if ((cs->rcvidx + count) >= MAX_DFRAME_LEN_L1) {
142 if (cs->debug & L1_DEB_WARN)
143 debugl1(cs, "W6692_empty_fifo overrun %d",
144 cs->rcvidx + count);
145 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK);
146 cs->rcvidx = 0;
147 return;
148 }
149 ptr = cs->rcvbuf + cs->rcvidx;
150 cs->rcvidx += count;
151 cs->readW6692fifo(cs, ptr, count);
152 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK);
153 if (cs->debug & L1_DEB_ISAC_FIFO) {
154 char *t = cs->dlog;
155
156 t += sprintf(t, "W6692_empty_fifo cnt %d", count);
157 QuickHex(t, ptr, count);
158 debugl1(cs, cs->dlog);
159 }
160 }
161
162 static void
163 W6692_fill_fifo(struct IsdnCardState *cs)
164 {
165 int count, more;
166 u_char *ptr;
167
168 if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
169 debugl1(cs, "W6692_fill_fifo");
170
171 if (!cs->tx_skb)
172 return;
173
174 count = cs->tx_skb->len;
175 if (count <= 0)
176 return;
177
178 more = 0;
179 if (count > W_D_FIFO_THRESH) {
180 more = !0;
181 count = W_D_FIFO_THRESH;
182 }
183 ptr = cs->tx_skb->data;
184 skb_pull(cs->tx_skb, count);
185 cs->tx_cnt += count;
186 cs->writeW6692fifo(cs, ptr, count);
187 cs->writeW6692(cs, W_D_CMDR, more ? W_D_CMDR_XMS : (W_D_CMDR_XMS | W_D_CMDR_XME));
188 if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
189 debugl1(cs, "W6692_fill_fifo dbusytimer running");
190 del_timer(&cs->dbusytimer);
191 }
192 init_timer(&cs->dbusytimer);
193 cs->dbusytimer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000);
194 add_timer(&cs->dbusytimer);
195 if (cs->debug & L1_DEB_ISAC_FIFO) {
196 char *t = cs->dlog;
197
198 t += sprintf(t, "W6692_fill_fifo cnt %d", count);
199 QuickHex(t, ptr, count);
200 debugl1(cs, cs->dlog);
201 }
202 }
203
204 static void
205 W6692B_empty_fifo(struct BCState *bcs, int count)
206 {
207 u_char *ptr;
208 struct IsdnCardState *cs = bcs->cs;
209
210 if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
211 debugl1(cs, "W6692B_empty_fifo");
212
213 if (bcs->hw.w6692.rcvidx + count > HSCX_BUFMAX) {
214 if (cs->debug & L1_DEB_WARN)
215 debugl1(cs, "W6692B_empty_fifo: incoming packet too large");
216 cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
217 bcs->hw.w6692.rcvidx = 0;
218 return;
219 }
220 ptr = bcs->hw.w6692.rcvbuf + bcs->hw.w6692.rcvidx;
221 bcs->hw.w6692.rcvidx += count;
222 READW6692BFIFO(cs, bcs->channel, ptr, count);
223 cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
224 if (cs->debug & L1_DEB_HSCX_FIFO) {
225 char *t = bcs->blog;
226
227 t += sprintf(t, "W6692B_empty_fifo %c cnt %d",
228 bcs->channel + '1', count);
229 QuickHex(t, ptr, count);
230 debugl1(cs, bcs->blog);
231 }
232 }
233
234 static void
235 W6692B_fill_fifo(struct BCState *bcs)
236 {
237 struct IsdnCardState *cs = bcs->cs;
238 int more, count;
239 u_char *ptr;
240
241 if (!bcs->tx_skb)
242 return;
243 if (bcs->tx_skb->len <= 0)
244 return;
245
246 more = (bcs->mode == L1_MODE_TRANS) ? 1 : 0;
247 if (bcs->tx_skb->len > W_B_FIFO_THRESH) {
248 more = 1;
249 count = W_B_FIFO_THRESH;
250 } else
251 count = bcs->tx_skb->len;
252
253 if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
254 debugl1(cs, "W6692B_fill_fifo%s%d", (more ? " ": " last "), count);
255
256 ptr = bcs->tx_skb->data;
257 skb_pull(bcs->tx_skb, count);
258 bcs->tx_cnt -= count;
259 bcs->hw.w6692.count += count;
260 WRITEW6692BFIFO(cs, bcs->channel, ptr, count);
261 cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACT | W_B_CMDR_XMS | (more ? 0 : W_B_CMDR_XME));
262 if (cs->debug & L1_DEB_HSCX_FIFO) {
263 char *t = bcs->blog;
264
265 t += sprintf(t, "W6692B_fill_fifo %c cnt %d",
266 bcs->channel + '1', count);
267 QuickHex(t, ptr, count);
268 debugl1(cs, bcs->blog);
269 }
270 }
271
272 static void
273 W6692B_interrupt(struct IsdnCardState *cs, u_char bchan)
274 {
275 u_char val;
276 u_char r;
277 struct BCState *bcs;
278 struct sk_buff *skb;
279 int count;
280
281 bcs = (cs->bcs->channel == bchan) ? cs->bcs : (cs->bcs+1);
282 val = cs->BC_Read_Reg(cs, bchan, W_B_EXIR);
283 debugl1(cs, "W6692B chan %d B_EXIR 0x%02X", bchan, val);
284
285 if (!test_bit(BC_FLG_INIT, &bcs->Flag)) {
286 debugl1(cs, "W6692B not INIT yet");
287 return;
288 }
289 if (val & W_B_EXI_RME) { /* RME */
290 r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
291 if (r & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) {
292 if (cs->debug & L1_DEB_WARN)
293 debugl1(cs, "W6692 B STAR %x", r);
294 if ((r & W_B_STAR_RDOV) && bcs->mode)
295 if (cs->debug & L1_DEB_WARN)
296 debugl1(cs, "W6692 B RDOV mode=%d",
297 bcs->mode);
298 if (r & W_B_STAR_CRCE)
299 if (cs->debug & L1_DEB_WARN)
300 debugl1(cs, "W6692 B CRC error");
301 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RRST | W_B_CMDR_RACT);
302 } else {
303 count = cs->BC_Read_Reg(cs, bchan, W_B_RBCL) & (W_B_FIFO_THRESH - 1);
304 if (count == 0)
305 count = W_B_FIFO_THRESH;
306 W6692B_empty_fifo(bcs, count);
307 if ((count = bcs->hw.w6692.rcvidx) > 0) {
308 if (cs->debug & L1_DEB_HSCX_FIFO)
309 debugl1(cs, "W6692 Bchan Frame %d", count);
310 if (!(skb = dev_alloc_skb(count)))
311 printk(KERN_WARNING "W6692: Bchan receive out of memory\n");
312 else {
313 memcpy(skb_put(skb, count), bcs->hw.w6692.rcvbuf, count);
314 skb_queue_tail(&bcs->rqueue, skb);
315 }
316 }
317 }
318 bcs->hw.w6692.rcvidx = 0;
319 schedule_event(bcs, B_RCVBUFREADY);
320 }
321 if (val & W_B_EXI_RMR) { /* RMR */
322 W6692B_empty_fifo(bcs, W_B_FIFO_THRESH);
323 r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
324 if (r & W_B_STAR_RDOV) {
325 if (cs->debug & L1_DEB_WARN)
326 debugl1(cs, "W6692 B RDOV(RMR) mode=%d",bcs->mode);
327 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RRST | W_B_CMDR_RACT);
328 if (bcs->mode != L1_MODE_TRANS)
329 bcs->hw.w6692.rcvidx = 0;
330 }
331 if (bcs->mode == L1_MODE_TRANS) {
332 /* receive audio data */
333 if (!(skb = dev_alloc_skb(W_B_FIFO_THRESH)))
334 printk(KERN_WARNING "HiSax: receive out of memory\n");
335 else {
336 memcpy(skb_put(skb, W_B_FIFO_THRESH), bcs->hw.w6692.rcvbuf, W_B_FIFO_THRESH);
337 skb_queue_tail(&bcs->rqueue, skb);
338 }
339 bcs->hw.w6692.rcvidx = 0;
340 schedule_event(bcs, B_RCVBUFREADY);
341 }
342 }
343 if (val & W_B_EXI_XDUN) { /* XDUN */
344 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
345 if (cs->debug & L1_DEB_WARN)
346 debugl1(cs, "W6692 B EXIR %x Lost TX", val);
347 if (bcs->mode == 1)
348 W6692B_fill_fifo(bcs);
349 else {
350 /* Here we lost an TX interrupt, so
351 * restart transmitting the whole frame.
352 */
353 if (bcs->tx_skb) {
354 skb_push(bcs->tx_skb, bcs->hw.w6692.count);
355 bcs->tx_cnt += bcs->hw.w6692.count;
356 bcs->hw.w6692.count = 0;
357 }
358 }
359 return;
360 }
361 if (val & W_B_EXI_XFR) { /* XFR */
362 r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
363 if (r & W_B_STAR_XDOW) {
364 if (cs->debug & L1_DEB_WARN)
365 debugl1(cs, "W6692 B STAR %x XDOW", r);
366 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
367 if (bcs->tx_skb && (bcs->mode != 1)) {
368 skb_push(bcs->tx_skb, bcs->hw.w6692.count);
369 bcs->tx_cnt += bcs->hw.w6692.count;
370 bcs->hw.w6692.count = 0;
371 }
372 }
373 if (bcs->tx_skb) {
374 if (bcs->tx_skb->len) {
375 W6692B_fill_fifo(bcs);
376 return;
377 } else {
378 if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
379 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
380 u_long flags;
381 spin_lock_irqsave(&bcs->aclock, flags);
382 bcs->ackcnt += bcs->hw.w6692.count;
383 spin_unlock_irqrestore(&bcs->aclock, flags);
384 schedule_event(bcs, B_ACKPENDING);
385 }
386 dev_kfree_skb_irq(bcs->tx_skb);
387 bcs->hw.w6692.count = 0;
388 bcs->tx_skb = NULL;
389 }
390 }
391 if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
392 bcs->hw.w6692.count = 0;
393 test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
394 W6692B_fill_fifo(bcs);
395 } else {
396 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
397 schedule_event(bcs, B_XMTBUFREADY);
398 }
399 }
400 }
401
402 static irqreturn_t
403 W6692_interrupt(int intno, void *dev_id)
404 {
405 struct IsdnCardState *cs = dev_id;
406 u_char val, exval, v1;
407 struct sk_buff *skb;
408 u_int count;
409 u_long flags;
410 int icnt = 5;
411
412 spin_lock_irqsave(&cs->lock, flags);
413 val = cs->readW6692(cs, W_ISTA);
414 if (!val) {
415 spin_unlock_irqrestore(&cs->lock, flags);
416 return IRQ_NONE;
417 }
418 StartW6692:
419 if (cs->debug & L1_DEB_ISAC)
420 debugl1(cs, "W6692 ISTA %x", val);
421
422 if (val & W_INT_D_RME) { /* RME */
423 exval = cs->readW6692(cs, W_D_RSTA);
424 if (exval & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) {
425 if (exval & W_D_RSTA_RDOV)
426 if (cs->debug & L1_DEB_WARN)
427 debugl1(cs, "W6692 RDOV");
428 if (exval & W_D_RSTA_CRCE)
429 if (cs->debug & L1_DEB_WARN)
430 debugl1(cs, "W6692 D-channel CRC error");
431 if (exval & W_D_RSTA_RMB)
432 if (cs->debug & L1_DEB_WARN)
433 debugl1(cs, "W6692 D-channel ABORT");
434 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST);
435 } else {
436 count = cs->readW6692(cs, W_D_RBCL) & (W_D_FIFO_THRESH - 1);
437 if (count == 0)
438 count = W_D_FIFO_THRESH;
439 W6692_empty_fifo(cs, count);
440 if ((count = cs->rcvidx) > 0) {
441 cs->rcvidx = 0;
442 if (!(skb = alloc_skb(count, GFP_ATOMIC)))
443 printk(KERN_WARNING "HiSax: D receive out of memory\n");
444 else {
445 memcpy(skb_put(skb, count), cs->rcvbuf, count);
446 skb_queue_tail(&cs->rq, skb);
447 }
448 }
449 }
450 cs->rcvidx = 0;
451 schedule_event(cs, D_RCVBUFREADY);
452 }
453 if (val & W_INT_D_RMR) { /* RMR */
454 W6692_empty_fifo(cs, W_D_FIFO_THRESH);
455 }
456 if (val & W_INT_D_XFR) { /* XFR */
457 if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
458 del_timer(&cs->dbusytimer);
459 if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
460 schedule_event(cs, D_CLEARBUSY);
461 if (cs->tx_skb) {
462 if (cs->tx_skb->len) {
463 W6692_fill_fifo(cs);
464 goto afterXFR;
465 } else {
466 dev_kfree_skb_irq(cs->tx_skb);
467 cs->tx_cnt = 0;
468 cs->tx_skb = NULL;
469 }
470 }
471 if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
472 cs->tx_cnt = 0;
473 W6692_fill_fifo(cs);
474 } else
475 schedule_event(cs, D_XMTBUFREADY);
476 }
477 afterXFR:
478 if (val & (W_INT_XINT0 | W_INT_XINT1)) { /* XINT0/1 - never */
479 if (cs->debug & L1_DEB_ISAC)
480 debugl1(cs, "W6692 spurious XINT!");
481 }
482 if (val & W_INT_D_EXI) { /* EXI */
483 exval = cs->readW6692(cs, W_D_EXIR);
484 if (cs->debug & L1_DEB_WARN)
485 debugl1(cs, "W6692 D_EXIR %02x", exval);
486 if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) { /* Transmit underrun/collision */
487 debugl1(cs, "W6692 D-chan underrun/collision");
488 printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL\n");
489 if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
490 del_timer(&cs->dbusytimer);
491 if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
492 schedule_event(cs, D_CLEARBUSY);
493 if (cs->tx_skb) { /* Restart frame */
494 skb_push(cs->tx_skb, cs->tx_cnt);
495 cs->tx_cnt = 0;
496 W6692_fill_fifo(cs);
497 } else {
498 printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL no skb\n");
499 debugl1(cs, "W6692 XDUN/XCOL no skb");
500 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST);
501 }
502 }
503 if (exval & W_D_EXI_RDOV) { /* RDOV */
504 debugl1(cs, "W6692 D-channel RDOV");
505 printk(KERN_WARNING "HiSax: W6692 D-RDOV\n");
506 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST);
507 }
508 if (exval & W_D_EXI_TIN2) { /* TIN2 - never */
509 debugl1(cs, "W6692 spurious TIN2 interrupt");
510 }
511 if (exval & W_D_EXI_MOC) { /* MOC - not supported */
512 debugl1(cs, "W6692 spurious MOC interrupt");
513 v1 = cs->readW6692(cs, W_MOSR);
514 debugl1(cs, "W6692 MOSR %02x", v1);
515 }
516 if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */
517 v1 = cs->readW6692(cs, W_CIR);
518 if (cs->debug & L1_DEB_ISAC)
519 debugl1(cs, "W6692 ISC CIR=0x%02X", v1);
520 if (v1 & W_CIR_ICC) {
521 cs->dc.w6692.ph_state = v1 & W_CIR_COD_MASK;
522 if (cs->debug & L1_DEB_ISAC)
523 debugl1(cs, "ph_state_change %x", cs->dc.w6692.ph_state);
524 schedule_event(cs, D_L1STATECHANGE);
525 }
526 if (v1 & W_CIR_SCC) {
527 v1 = cs->readW6692(cs, W_SQR);
528 debugl1(cs, "W6692 SCC SQR=0x%02X", v1);
529 }
530 }
531 if (exval & W_D_EXI_WEXP) {
532 debugl1(cs, "W6692 spurious WEXP interrupt!");
533 }
534 if (exval & W_D_EXI_TEXP) {
535 debugl1(cs, "W6692 spurious TEXP interrupt!");
536 }
537 }
538 if (val & W_INT_B1_EXI) {
539 debugl1(cs, "W6692 B channel 1 interrupt");
540 W6692B_interrupt(cs, 0);
541 }
542 if (val & W_INT_B2_EXI) {
543 debugl1(cs, "W6692 B channel 2 interrupt");
544 W6692B_interrupt(cs, 1);
545 }
546 val = cs->readW6692(cs, W_ISTA);
547 if (val && icnt) {
548 icnt--;
549 goto StartW6692;
550 }
551 if (!icnt) {
552 printk(KERN_WARNING "W6692 IRQ LOOP\n");
553 cs->writeW6692(cs, W_IMASK, 0xff);
554 }
555 spin_unlock_irqrestore(&cs->lock, flags);
556 return IRQ_HANDLED;
557 }
558
559 static void
560 W6692_l1hw(struct PStack *st, int pr, void *arg)
561 {
562 struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
563 struct sk_buff *skb = arg;
564 u_long flags;
565 int val;
566
567 switch (pr) {
568 case (PH_DATA | REQUEST):
569 if (cs->debug & DEB_DLOG_HEX)
570 LogFrame(cs, skb->data, skb->len);
571 if (cs->debug & DEB_DLOG_VERBOSE)
572 dlogframe(cs, skb, 0);
573 spin_lock_irqsave(&cs->lock, flags);
574 if (cs->tx_skb) {
575 skb_queue_tail(&cs->sq, skb);
576 #ifdef L2FRAME_DEBUG /* psa */
577 if (cs->debug & L1_DEB_LAPD)
578 Logl2Frame(cs, skb, "PH_DATA Queued", 0);
579 #endif
580 } else {
581 cs->tx_skb = skb;
582 cs->tx_cnt = 0;
583 #ifdef L2FRAME_DEBUG /* psa */
584 if (cs->debug & L1_DEB_LAPD)
585 Logl2Frame(cs, skb, "PH_DATA", 0);
586 #endif
587 W6692_fill_fifo(cs);
588 }
589 spin_unlock_irqrestore(&cs->lock, flags);
590 break;
591 case (PH_PULL | INDICATION):
592 spin_lock_irqsave(&cs->lock, flags);
593 if (cs->tx_skb) {
594 if (cs->debug & L1_DEB_WARN)
595 debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
596 skb_queue_tail(&cs->sq, skb);
597 spin_unlock_irqrestore(&cs->lock, flags);
598 break;
599 }
600 if (cs->debug & DEB_DLOG_HEX)
601 LogFrame(cs, skb->data, skb->len);
602 if (cs->debug & DEB_DLOG_VERBOSE)
603 dlogframe(cs, skb, 0);
604 cs->tx_skb = skb;
605 cs->tx_cnt = 0;
606 #ifdef L2FRAME_DEBUG /* psa */
607 if (cs->debug & L1_DEB_LAPD)
608 Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
609 #endif
610 W6692_fill_fifo(cs);
611 spin_unlock_irqrestore(&cs->lock, flags);
612 break;
613 case (PH_PULL | REQUEST):
614 #ifdef L2FRAME_DEBUG /* psa */
615 if (cs->debug & L1_DEB_LAPD)
616 debugl1(cs, "-> PH_REQUEST_PULL");
617 #endif
618 if (!cs->tx_skb) {
619 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
620 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
621 } else
622 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
623 break;
624 case (HW_RESET | REQUEST):
625 spin_lock_irqsave(&cs->lock, flags);
626 if ((cs->dc.w6692.ph_state == W_L1IND_DRD)) {
627 ph_command(cs, W_L1CMD_ECK);
628 spin_unlock_irqrestore(&cs->lock, flags);
629 } else {
630 ph_command(cs, W_L1CMD_RST);
631 cs->dc.w6692.ph_state = W_L1CMD_RST;
632 spin_unlock_irqrestore(&cs->lock, flags);
633 W6692_new_ph(cs);
634 }
635 break;
636 case (HW_ENABLE | REQUEST):
637 spin_lock_irqsave(&cs->lock, flags);
638 ph_command(cs, W_L1CMD_ECK);
639 spin_unlock_irqrestore(&cs->lock, flags);
640 break;
641 case (HW_INFO3 | REQUEST):
642 spin_lock_irqsave(&cs->lock, flags);
643 ph_command(cs, W_L1CMD_AR8);
644 spin_unlock_irqrestore(&cs->lock, flags);
645 break;
646 case (HW_TESTLOOP | REQUEST):
647 val = 0;
648 if (1 & (long) arg)
649 val |= 0x0c;
650 if (2 & (long) arg)
651 val |= 0x3;
652 /* !!! not implemented yet */
653 break;
654 case (HW_DEACTIVATE | RESPONSE):
655 skb_queue_purge(&cs->rq);
656 skb_queue_purge(&cs->sq);
657 if (cs->tx_skb) {
658 dev_kfree_skb_any(cs->tx_skb);
659 cs->tx_skb = NULL;
660 }
661 if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
662 del_timer(&cs->dbusytimer);
663 if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
664 schedule_event(cs, D_CLEARBUSY);
665 break;
666 default:
667 if (cs->debug & L1_DEB_WARN)
668 debugl1(cs, "W6692_l1hw unknown %04x", pr);
669 break;
670 }
671 }
672
673 static void
674 setstack_W6692(struct PStack *st, struct IsdnCardState *cs)
675 {
676 st->l1.l1hw = W6692_l1hw;
677 }
678
679 static void
680 DC_Close_W6692(struct IsdnCardState *cs)
681 {
682 }
683
684 static void
685 dbusy_timer_handler(struct IsdnCardState *cs)
686 {
687 struct PStack *stptr;
688 int rbch, star;
689 u_long flags;
690
691 spin_lock_irqsave(&cs->lock, flags);
692 if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
693 rbch = cs->readW6692(cs, W_D_RBCH);
694 star = cs->readW6692(cs, W_D_STAR);
695 if (cs->debug)
696 debugl1(cs, "D-Channel Busy D_RBCH %02x D_STAR %02x",
697 rbch, star);
698 if (star & W_D_STAR_XBZ) { /* D-Channel Busy */
699 test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags);
700 stptr = cs->stlist;
701 while (stptr != NULL) {
702 stptr->l1.l1l2(stptr, PH_PAUSE | INDICATION, NULL);
703 stptr = stptr->next;
704 }
705 } else {
706 /* discard frame; reset transceiver */
707 test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags);
708 if (cs->tx_skb) {
709 dev_kfree_skb_any(cs->tx_skb);
710 cs->tx_cnt = 0;
711 cs->tx_skb = NULL;
712 } else {
713 printk(KERN_WARNING "HiSax: W6692 D-Channel Busy no skb\n");
714 debugl1(cs, "D-Channel Busy no skb");
715 }
716 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST); /* Transmitter reset */
717 spin_unlock_irqrestore(&cs->lock, flags);
718 cs->irq_func(cs->irq, cs);
719 return;
720 }
721 }
722 spin_unlock_irqrestore(&cs->lock, flags);
723 }
724
725 static void
726 W6692Bmode(struct BCState *bcs, int mode, int bchan)
727 {
728 struct IsdnCardState *cs = bcs->cs;
729
730 if (cs->debug & L1_DEB_HSCX)
731 debugl1(cs, "w6692 %c mode %d ichan %d",
732 '1' + bchan, mode, bchan);
733 bcs->mode = mode;
734 bcs->channel = bchan;
735 bcs->hw.w6692.bchan = bchan;
736
737 switch (mode) {
738 case (L1_MODE_NULL):
739 cs->BC_Write_Reg(cs, bchan, W_B_MODE, 0);
740 break;
741 case (L1_MODE_TRANS):
742 cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_MMS);
743 break;
744 case (L1_MODE_HDLC):
745 cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_ITF);
746 cs->BC_Write_Reg(cs, bchan, W_B_ADM1, 0xff);
747 cs->BC_Write_Reg(cs, bchan, W_B_ADM2, 0xff);
748 break;
749 }
750 if (mode)
751 cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RRST |
752 W_B_CMDR_RACT | W_B_CMDR_XRST);
753 cs->BC_Write_Reg(cs, bchan, W_B_EXIM, 0x00);
754 }
755
756 static void
757 W6692_l2l1(struct PStack *st, int pr, void *arg)
758 {
759 struct sk_buff *skb = arg;
760 struct BCState *bcs = st->l1.bcs;
761 u_long flags;
762
763 switch (pr) {
764 case (PH_DATA | REQUEST):
765 spin_lock_irqsave(&bcs->cs->lock, flags);
766 if (bcs->tx_skb) {
767 skb_queue_tail(&bcs->squeue, skb);
768 } else {
769 bcs->tx_skb = skb;
770 test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
771 bcs->hw.w6692.count = 0;
772 bcs->cs->BC_Send_Data(bcs);
773 }
774 spin_unlock_irqrestore(&bcs->cs->lock, flags);
775 break;
776 case (PH_PULL | INDICATION):
777 if (bcs->tx_skb) {
778 printk(KERN_WARNING "W6692_l2l1: this shouldn't happen\n");
779 break;
780 }
781 spin_lock_irqsave(&bcs->cs->lock, flags);
782 test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
783 bcs->tx_skb = skb;
784 bcs->hw.w6692.count = 0;
785 bcs->cs->BC_Send_Data(bcs);
786 spin_unlock_irqrestore(&bcs->cs->lock, flags);
787 break;
788 case (PH_PULL | REQUEST):
789 if (!bcs->tx_skb) {
790 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
791 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
792 } else
793 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
794 break;
795 case (PH_ACTIVATE | REQUEST):
796 spin_lock_irqsave(&bcs->cs->lock, flags);
797 test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
798 W6692Bmode(bcs, st->l1.mode, st->l1.bc);
799 spin_unlock_irqrestore(&bcs->cs->lock, flags);
800 l1_msg_b(st, pr, arg);
801 break;
802 case (PH_DEACTIVATE | REQUEST):
803 l1_msg_b(st, pr, arg);
804 break;
805 case (PH_DEACTIVATE | CONFIRM):
806 spin_lock_irqsave(&bcs->cs->lock, flags);
807 test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
808 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
809 W6692Bmode(bcs, 0, st->l1.bc);
810 spin_unlock_irqrestore(&bcs->cs->lock, flags);
811 st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
812 break;
813 }
814 }
815
816 static void
817 close_w6692state(struct BCState *bcs)
818 {
819 W6692Bmode(bcs, 0, bcs->channel);
820 if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
821 kfree(bcs->hw.w6692.rcvbuf);
822 bcs->hw.w6692.rcvbuf = NULL;
823 kfree(bcs->blog);
824 bcs->blog = NULL;
825 skb_queue_purge(&bcs->rqueue);
826 skb_queue_purge(&bcs->squeue);
827 if (bcs->tx_skb) {
828 dev_kfree_skb_any(bcs->tx_skb);
829 bcs->tx_skb = NULL;
830 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
831 }
832 }
833 }
834
835 static int
836 open_w6692state(struct IsdnCardState *cs, struct BCState *bcs)
837 {
838 if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
839 if (!(bcs->hw.w6692.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) {
840 printk(KERN_WARNING
841 "HiSax: No memory for w6692.rcvbuf\n");
842 test_and_clear_bit(BC_FLG_INIT, &bcs->Flag);
843 return (1);
844 }
845 if (!(bcs->blog = kmalloc(MAX_BLOG_SPACE, GFP_ATOMIC))) {
846 printk(KERN_WARNING
847 "HiSax: No memory for bcs->blog\n");
848 test_and_clear_bit(BC_FLG_INIT, &bcs->Flag);
849 kfree(bcs->hw.w6692.rcvbuf);
850 bcs->hw.w6692.rcvbuf = NULL;
851 return (2);
852 }
853 skb_queue_head_init(&bcs->rqueue);
854 skb_queue_head_init(&bcs->squeue);
855 }
856 bcs->tx_skb = NULL;
857 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
858 bcs->event = 0;
859 bcs->hw.w6692.rcvidx = 0;
860 bcs->tx_cnt = 0;
861 return (0);
862 }
863
864 static int
865 setstack_w6692(struct PStack *st, struct BCState *bcs)
866 {
867 bcs->channel = st->l1.bc;
868 if (open_w6692state(st->l1.hardware, bcs))
869 return (-1);
870 st->l1.bcs = bcs;
871 st->l2.l2l1 = W6692_l2l1;
872 setstack_manager(st);
873 bcs->st = st;
874 setstack_l1_B(st);
875 return (0);
876 }
877
878 static void resetW6692(struct IsdnCardState *cs)
879 {
880 cs->writeW6692(cs, W_D_CTL, W_D_CTL_SRST);
881 mdelay(10);
882 cs->writeW6692(cs, W_D_CTL, 0x00);
883 mdelay(10);
884 cs->writeW6692(cs, W_IMASK, 0xff);
885 cs->writeW6692(cs, W_D_SAM, 0xff);
886 cs->writeW6692(cs, W_D_TAM, 0xff);
887 cs->writeW6692(cs, W_D_EXIM, 0x00);
888 cs->writeW6692(cs, W_D_MODE, W_D_MODE_RACT);
889 cs->writeW6692(cs, W_IMASK, 0x18);
890 if (cs->subtyp == W6692_USR) {
891 /* seems that USR implemented some power control features
892 * Pin 79 is connected to the oscilator circuit so we
893 * have to handle it here
894 */
895 cs->writeW6692(cs, W_PCTL, 0x80);
896 cs->writeW6692(cs, W_XDATA, 0x00);
897 }
898 }
899
900 static void initW6692(struct IsdnCardState *cs, int part)
901 {
902 if (part & 1) {
903 cs->setstack_d = setstack_W6692;
904 cs->DC_Close = DC_Close_W6692;
905 cs->dbusytimer.function = (void *) dbusy_timer_handler;
906 cs->dbusytimer.data = (long) cs;
907 init_timer(&cs->dbusytimer);
908 resetW6692(cs);
909 ph_command(cs, W_L1CMD_RST);
910 cs->dc.w6692.ph_state = W_L1CMD_RST;
911 W6692_new_ph(cs);
912 ph_command(cs, W_L1CMD_ECK);
913
914 cs->bcs[0].BC_SetStack = setstack_w6692;
915 cs->bcs[1].BC_SetStack = setstack_w6692;
916 cs->bcs[0].BC_Close = close_w6692state;
917 cs->bcs[1].BC_Close = close_w6692state;
918 W6692Bmode(cs->bcs, 0, 0);
919 W6692Bmode(cs->bcs + 1, 0, 0);
920 }
921 if (part & 2) {
922 /* Reenable all IRQ */
923 cs->writeW6692(cs, W_IMASK, 0x18);
924 cs->writeW6692(cs, W_D_EXIM, 0x00);
925 cs->BC_Write_Reg(cs, 0, W_B_EXIM, 0x00);
926 cs->BC_Write_Reg(cs, 1, W_B_EXIM, 0x00);
927 /* Reset D-chan receiver and transmitter */
928 cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST);
929 }
930 }
931
932 /* Interface functions */
933
934 static u_char
935 ReadW6692(struct IsdnCardState *cs, u_char offset)
936 {
937 return (inb(cs->hw.w6692.iobase + offset));
938 }
939
940 static void
941 WriteW6692(struct IsdnCardState *cs, u_char offset, u_char value)
942 {
943 outb(value, cs->hw.w6692.iobase + offset);
944 }
945
946 static void
947 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
948 {
949 insb(cs->hw.w6692.iobase + W_D_RFIFO, data, size);
950 }
951
952 static void
953 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
954 {
955 outsb(cs->hw.w6692.iobase + W_D_XFIFO, data, size);
956 }
957
958 static u_char
959 ReadW6692B(struct IsdnCardState *cs, int bchan, u_char offset)
960 {
961 return (inb(cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset));
962 }
963
964 static void
965 WriteW6692B(struct IsdnCardState *cs, int bchan, u_char offset, u_char value)
966 {
967 outb(value, cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset);
968 }
969
970 static int
971 w6692_card_msg(struct IsdnCardState *cs, int mt, void *arg)
972 {
973 switch (mt) {
974 case CARD_RESET:
975 resetW6692(cs);
976 return (0);
977 case CARD_RELEASE:
978 cs->writeW6692(cs, W_IMASK, 0xff);
979 release_region(cs->hw.w6692.iobase, 256);
980 if (cs->subtyp == W6692_USR) {
981 cs->writeW6692(cs, W_XDATA, 0x04);
982 }
983 return (0);
984 case CARD_INIT:
985 initW6692(cs, 3);
986 return (0);
987 case CARD_TEST:
988 return (0);
989 }
990 return (0);
991 }
992
993 static int id_idx ;
994
995 static struct pci_dev *dev_w6692 __devinitdata = NULL;
996
997 int __devinit
998 setup_w6692(struct IsdnCard *card)
999 {
1000 struct IsdnCardState *cs = card->cs;
1001 char tmp[64];
1002 u_char found = 0;
1003 u_char pci_irq = 0;
1004 u_int pci_ioaddr = 0;
1005
1006 strcpy(tmp, w6692_revision);
1007 printk(KERN_INFO "HiSax: W6692 driver Rev. %s\n", HiSax_getrev(tmp));
1008 if (cs->typ != ISDN_CTYPE_W6692)
1009 return (0);
1010
1011 while (id_list[id_idx].vendor_id) {
1012 dev_w6692 = pci_find_device(id_list[id_idx].vendor_id,
1013 id_list[id_idx].device_id,
1014 dev_w6692);
1015 if (dev_w6692) {
1016 if (pci_enable_device(dev_w6692))
1017 continue;
1018 cs->subtyp = id_idx;
1019 break;
1020 }
1021 id_idx++;
1022 }
1023 if (dev_w6692) {
1024 found = 1;
1025 pci_irq = dev_w6692->irq;
1026 /* I think address 0 is allways the configuration area */
1027 /* and address 1 is the real IO space KKe 03.09.99 */
1028 pci_ioaddr = pci_resource_start(dev_w6692, 1);
1029 /* USR ISDN PCI card TA need some special handling */
1030 if (cs->subtyp == W6692_WINBOND) {
1031 if ((W6692_SV_USR == dev_w6692->subsystem_vendor) &&
1032 (W6692_SD_USR == dev_w6692->subsystem_device)) {
1033 cs->subtyp = W6692_USR;
1034 }
1035 }
1036 }
1037 if (!found) {
1038 printk(KERN_WARNING "W6692: No PCI card found\n");
1039 return (0);
1040 }
1041 cs->irq = pci_irq;
1042 if (!cs->irq) {
1043 printk(KERN_WARNING "W6692: No IRQ for PCI card found\n");
1044 return (0);
1045 }
1046 if (!pci_ioaddr) {
1047 printk(KERN_WARNING "W6692: NO I/O Base Address found\n");
1048 return (0);
1049 }
1050 cs->hw.w6692.iobase = pci_ioaddr;
1051 printk(KERN_INFO "Found: %s %s, I/O base: 0x%x, irq: %d\n",
1052 id_list[cs->subtyp].vendor_name, id_list[cs->subtyp].card_name,
1053 pci_ioaddr, pci_irq);
1054 if (!request_region(cs->hw.w6692.iobase, 256, id_list[cs->subtyp].card_name)) {
1055 printk(KERN_WARNING
1056 "HiSax: %s I/O ports %x-%x already in use\n",
1057 id_list[cs->subtyp].card_name,
1058 cs->hw.w6692.iobase,
1059 cs->hw.w6692.iobase + 255);
1060 return (0);
1061 }
1062
1063 printk(KERN_INFO
1064 "HiSax: %s config irq:%d I/O:%x\n",
1065 id_list[cs->subtyp].card_name, cs->irq,
1066 cs->hw.w6692.iobase);
1067
1068 INIT_WORK(&cs->tqueue, W6692_bh);
1069 cs->readW6692 = &ReadW6692;
1070 cs->writeW6692 = &WriteW6692;
1071 cs->readisacfifo = &ReadISACfifo;
1072 cs->writeisacfifo = &WriteISACfifo;
1073 cs->BC_Read_Reg = &ReadW6692B;
1074 cs->BC_Write_Reg = &WriteW6692B;
1075 cs->BC_Send_Data = &W6692B_fill_fifo;
1076 cs->cardmsg = &w6692_card_msg;
1077 cs->irq_func = &W6692_interrupt;
1078 cs->irq_flags |= IRQF_SHARED;
1079 W6692Version(cs, "W6692:");
1080 printk(KERN_INFO "W6692 ISTA=0x%X\n", ReadW6692(cs, W_ISTA));
1081 printk(KERN_INFO "W6692 IMASK=0x%X\n", ReadW6692(cs, W_IMASK));
1082 printk(KERN_INFO "W6692 D_EXIR=0x%X\n", ReadW6692(cs, W_D_EXIR));
1083 printk(KERN_INFO "W6692 D_EXIM=0x%X\n", ReadW6692(cs, W_D_EXIM));
1084 printk(KERN_INFO "W6692 D_RSTA=0x%X\n", ReadW6692(cs, W_D_RSTA));
1085 return (1);
1086 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree