1 /*
2 * mISDNisar.c ISAR (Siemens PSB 7110) specific functions
3 *
4 * Author Karsten Keil (keil@isdn4linux.de)
5 *
6 * Copyright 2009 by Karsten Keil <keil@isdn4linux.de>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 */
22
23 /* define this to enable static debug messages, if you kernel supports
24 * dynamic debugging, you should use debugfs for this
25 */
26 /* #define DEBUG */
27
28 #include <linux/gfp.h>
29 #include <linux/delay.h>
30 #include <linux/vmalloc.h>
31 #include <linux/mISDNhw.h>
32 #include <linux/module.h>
33 #include "isar.h"
34
35 #define ISAR_REV "2.1"
36
37 MODULE_AUTHOR("Karsten Keil");
38 MODULE_LICENSE("GPL v2");
39 MODULE_VERSION(ISAR_REV);
40
41 #define DEBUG_HW_FIRMWARE_FIFO 0x10000
42
43 static const u8 faxmodulation_s[] = "3,24,48,72,73,74,96,97,98,121,122,145,146";
44 static const u8 faxmodulation[] = {3, 24, 48, 72, 73, 74, 96, 97, 98, 121,
45 122, 145, 146};
46 #define FAXMODCNT 13
47
48 static void isar_setup(struct isar_hw *);
49
50 static inline int
waitforHIA(struct isar_hw * isar,int timeout)51 waitforHIA(struct isar_hw *isar, int timeout)
52 {
53 int t = timeout;
54 u8 val = isar->read_reg(isar->hw, ISAR_HIA);
55
56 while ((val & 1) && t) {
57 udelay(1);
58 t--;
59 val = isar->read_reg(isar->hw, ISAR_HIA);
60 }
61 pr_debug("%s: HIA after %dus\n", isar->name, timeout - t);
62 return timeout;
63 }
64
65 /*
66 * send msg to ISAR mailbox
67 * if msg is NULL use isar->buf
68 */
69 static int
send_mbox(struct isar_hw * isar,u8 his,u8 creg,u8 len,u8 * msg)70 send_mbox(struct isar_hw *isar, u8 his, u8 creg, u8 len, u8 *msg)
71 {
72 if (!waitforHIA(isar, 1000))
73 return 0;
74 pr_debug("send_mbox(%02x,%02x,%d)\n", his, creg, len);
75 isar->write_reg(isar->hw, ISAR_CTRL_H, creg);
76 isar->write_reg(isar->hw, ISAR_CTRL_L, len);
77 isar->write_reg(isar->hw, ISAR_WADR, 0);
78 if (!msg)
79 msg = isar->buf;
80 if (msg && len) {
81 isar->write_fifo(isar->hw, ISAR_MBOX, msg, len);
82 if (isar->ch[0].bch.debug & DEBUG_HW_BFIFO) {
83 int l = 0;
84
85 while (l < (int)len) {
86 hex_dump_to_buffer(msg + l, len - l, 32, 1,
87 isar->log, 256, 1);
88 pr_debug("%s: %s %02x: %s\n", isar->name,
89 __func__, l, isar->log);
90 l += 32;
91 }
92 }
93 }
94 isar->write_reg(isar->hw, ISAR_HIS, his);
95 waitforHIA(isar, 1000);
96 return 1;
97 }
98
99 /*
100 * receive message from ISAR mailbox
101 * if msg is NULL use isar->buf
102 */
103 static void
rcv_mbox(struct isar_hw * isar,u8 * msg)104 rcv_mbox(struct isar_hw *isar, u8 *msg)
105 {
106 if (!msg)
107 msg = isar->buf;
108 isar->write_reg(isar->hw, ISAR_RADR, 0);
109 if (msg && isar->clsb) {
110 isar->read_fifo(isar->hw, ISAR_MBOX, msg, isar->clsb);
111 if (isar->ch[0].bch.debug & DEBUG_HW_BFIFO) {
112 int l = 0;
113
114 while (l < (int)isar->clsb) {
115 hex_dump_to_buffer(msg + l, isar->clsb - l, 32,
116 1, isar->log, 256, 1);
117 pr_debug("%s: %s %02x: %s\n", isar->name,
118 __func__, l, isar->log);
119 l += 32;
120 }
121 }
122 }
123 isar->write_reg(isar->hw, ISAR_IIA, 0);
124 }
125
126 static inline void
get_irq_infos(struct isar_hw * isar)127 get_irq_infos(struct isar_hw *isar)
128 {
129 isar->iis = isar->read_reg(isar->hw, ISAR_IIS);
130 isar->cmsb = isar->read_reg(isar->hw, ISAR_CTRL_H);
131 isar->clsb = isar->read_reg(isar->hw, ISAR_CTRL_L);
132 pr_debug("%s: rcv_mbox(%02x,%02x,%d)\n", isar->name,
133 isar->iis, isar->cmsb, isar->clsb);
134 }
135
136 /*
137 * poll answer message from ISAR mailbox
138 * should be used only with ISAR IRQs disabled before DSP was started
139 *
140 */
141 static int
poll_mbox(struct isar_hw * isar,int maxdelay)142 poll_mbox(struct isar_hw *isar, int maxdelay)
143 {
144 int t = maxdelay;
145 u8 irq;
146
147 irq = isar->read_reg(isar->hw, ISAR_IRQBIT);
148 while (t && !(irq & ISAR_IRQSTA)) {
149 udelay(1);
150 t--;
151 }
152 if (t) {
153 get_irq_infos(isar);
154 rcv_mbox(isar, NULL);
155 }
156 pr_debug("%s: pulled %d bytes after %d us\n",
157 isar->name, isar->clsb, maxdelay - t);
158 return t;
159 }
160
161 static int
ISARVersion(struct isar_hw * isar)162 ISARVersion(struct isar_hw *isar)
163 {
164 int ver;
165
166 /* disable ISAR IRQ */
167 isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
168 isar->buf[0] = ISAR_MSG_HWVER;
169 isar->buf[1] = 0;
170 isar->buf[2] = 1;
171 if (!send_mbox(isar, ISAR_HIS_VNR, 0, 3, NULL))
172 return -1;
173 if (!poll_mbox(isar, 1000))
174 return -2;
175 if (isar->iis == ISAR_IIS_VNR) {
176 if (isar->clsb == 1) {
177 ver = isar->buf[0] & 0xf;
178 return ver;
179 }
180 return -3;
181 }
182 return -4;
183 }
184
185 static int
load_firmware(struct isar_hw * isar,const u8 * buf,int size)186 load_firmware(struct isar_hw *isar, const u8 *buf, int size)
187 {
188 u32 saved_debug = isar->ch[0].bch.debug;
189 int ret, cnt;
190 u8 nom, noc;
191 u16 left, val, *sp = (u16 *)buf;
192 u8 *mp;
193 u_long flags;
194
195 struct {
196 u16 sadr;
197 u16 len;
198 u16 d_key;
199 } blk_head;
200
201 if (1 != isar->version) {
202 pr_err("%s: ISAR wrong version %d firmware download aborted\n",
203 isar->name, isar->version);
204 return -EINVAL;
205 }
206 if (!(saved_debug & DEBUG_HW_FIRMWARE_FIFO))
207 isar->ch[0].bch.debug &= ~DEBUG_HW_BFIFO;
208 pr_debug("%s: load firmware %d words (%d bytes)\n",
209 isar->name, size / 2, size);
210 cnt = 0;
211 size /= 2;
212 /* disable ISAR IRQ */
213 spin_lock_irqsave(isar->hwlock, flags);
214 isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
215 spin_unlock_irqrestore(isar->hwlock, flags);
216 while (cnt < size) {
217 blk_head.sadr = le16_to_cpu(*sp++);
218 blk_head.len = le16_to_cpu(*sp++);
219 blk_head.d_key = le16_to_cpu(*sp++);
220 cnt += 3;
221 pr_debug("ISAR firmware block (%#x,%d,%#x)\n",
222 blk_head.sadr, blk_head.len, blk_head.d_key & 0xff);
223 left = blk_head.len;
224 if (cnt + left > size) {
225 pr_info("%s: firmware error have %d need %d words\n",
226 isar->name, size, cnt + left);
227 ret = -EINVAL;
228 goto reterrflg;
229 }
230 spin_lock_irqsave(isar->hwlock, flags);
231 if (!send_mbox(isar, ISAR_HIS_DKEY, blk_head.d_key & 0xff,
232 0, NULL)) {
233 pr_info("ISAR send_mbox dkey failed\n");
234 ret = -ETIME;
235 goto reterror;
236 }
237 if (!poll_mbox(isar, 1000)) {
238 pr_warning("ISAR poll_mbox dkey failed\n");
239 ret = -ETIME;
240 goto reterror;
241 }
242 spin_unlock_irqrestore(isar->hwlock, flags);
243 if ((isar->iis != ISAR_IIS_DKEY) || isar->cmsb || isar->clsb) {
244 pr_info("ISAR wrong dkey response (%x,%x,%x)\n",
245 isar->iis, isar->cmsb, isar->clsb);
246 ret = 1;
247 goto reterrflg;
248 }
249 while (left > 0) {
250 if (left > 126)
251 noc = 126;
252 else
253 noc = left;
254 nom = (2 * noc) + 3;
255 mp = isar->buf;
256 /* the ISAR is big endian */
257 *mp++ = blk_head.sadr >> 8;
258 *mp++ = blk_head.sadr & 0xFF;
259 left -= noc;
260 cnt += noc;
261 *mp++ = noc;
262 pr_debug("%s: load %3d words at %04x\n", isar->name,
263 noc, blk_head.sadr);
264 blk_head.sadr += noc;
265 while (noc) {
266 val = le16_to_cpu(*sp++);
267 *mp++ = val >> 8;
268 *mp++ = val & 0xFF;
269 noc--;
270 }
271 spin_lock_irqsave(isar->hwlock, flags);
272 if (!send_mbox(isar, ISAR_HIS_FIRM, 0, nom, NULL)) {
273 pr_info("ISAR send_mbox prog failed\n");
274 ret = -ETIME;
275 goto reterror;
276 }
277 if (!poll_mbox(isar, 1000)) {
278 pr_info("ISAR poll_mbox prog failed\n");
279 ret = -ETIME;
280 goto reterror;
281 }
282 spin_unlock_irqrestore(isar->hwlock, flags);
283 if ((isar->iis != ISAR_IIS_FIRM) ||
284 isar->cmsb || isar->clsb) {
285 pr_info("ISAR wrong prog response (%x,%x,%x)\n",
286 isar->iis, isar->cmsb, isar->clsb);
287 ret = -EIO;
288 goto reterrflg;
289 }
290 }
291 pr_debug("%s: ISAR firmware block %d words loaded\n",
292 isar->name, blk_head.len);
293 }
294 isar->ch[0].bch.debug = saved_debug;
295 /* 10ms delay */
296 cnt = 10;
297 while (cnt--)
298 mdelay(1);
299 isar->buf[0] = 0xff;
300 isar->buf[1] = 0xfe;
301 isar->bstat = 0;
302 spin_lock_irqsave(isar->hwlock, flags);
303 if (!send_mbox(isar, ISAR_HIS_STDSP, 0, 2, NULL)) {
304 pr_info("ISAR send_mbox start dsp failed\n");
305 ret = -ETIME;
306 goto reterror;
307 }
308 if (!poll_mbox(isar, 1000)) {
309 pr_info("ISAR poll_mbox start dsp failed\n");
310 ret = -ETIME;
311 goto reterror;
312 }
313 if ((isar->iis != ISAR_IIS_STDSP) || isar->cmsb || isar->clsb) {
314 pr_info("ISAR wrong start dsp response (%x,%x,%x)\n",
315 isar->iis, isar->cmsb, isar->clsb);
316 ret = -EIO;
317 goto reterror;
318 } else
319 pr_debug("%s: ISAR start dsp success\n", isar->name);
320
321 /* NORMAL mode entered */
322 /* Enable IRQs of ISAR */
323 isar->write_reg(isar->hw, ISAR_IRQBIT, ISAR_IRQSTA);
324 spin_unlock_irqrestore(isar->hwlock, flags);
325 cnt = 1000; /* max 1s */
326 while ((!isar->bstat) && cnt) {
327 mdelay(1);
328 cnt--;
329 }
330 if (!cnt) {
331 pr_info("ISAR no general status event received\n");
332 ret = -ETIME;
333 goto reterrflg;
334 } else
335 pr_debug("%s: ISAR general status event %x\n",
336 isar->name, isar->bstat);
337 /* 10ms delay */
338 cnt = 10;
339 while (cnt--)
340 mdelay(1);
341 isar->iis = 0;
342 spin_lock_irqsave(isar->hwlock, flags);
343 if (!send_mbox(isar, ISAR_HIS_DIAG, ISAR_CTRL_STST, 0, NULL)) {
344 pr_info("ISAR send_mbox self tst failed\n");
345 ret = -ETIME;
346 goto reterror;
347 }
348 spin_unlock_irqrestore(isar->hwlock, flags);
349 cnt = 10000; /* max 100 ms */
350 while ((isar->iis != ISAR_IIS_DIAG) && cnt) {
351 udelay(10);
352 cnt--;
353 }
354 mdelay(1);
355 if (!cnt) {
356 pr_info("ISAR no self tst response\n");
357 ret = -ETIME;
358 goto reterrflg;
359 }
360 if ((isar->cmsb == ISAR_CTRL_STST) && (isar->clsb == 1)
361 && (isar->buf[0] == 0))
362 pr_debug("%s: ISAR selftest OK\n", isar->name);
363 else {
364 pr_info("ISAR selftest not OK %x/%x/%x\n",
365 isar->cmsb, isar->clsb, isar->buf[0]);
366 ret = -EIO;
367 goto reterrflg;
368 }
369 spin_lock_irqsave(isar->hwlock, flags);
370 isar->iis = 0;
371 if (!send_mbox(isar, ISAR_HIS_DIAG, ISAR_CTRL_SWVER, 0, NULL)) {
372 pr_info("ISAR RQST SVN failed\n");
373 ret = -ETIME;
374 goto reterror;
375 }
376 spin_unlock_irqrestore(isar->hwlock, flags);
377 cnt = 30000; /* max 300 ms */
378 while ((isar->iis != ISAR_IIS_DIAG) && cnt) {
379 udelay(10);
380 cnt--;
381 }
382 mdelay(1);
383 if (!cnt) {
384 pr_info("ISAR no SVN response\n");
385 ret = -ETIME;
386 goto reterrflg;
387 } else {
388 if ((isar->cmsb == ISAR_CTRL_SWVER) && (isar->clsb == 1)) {
389 pr_notice("%s: ISAR software version %#x\n",
390 isar->name, isar->buf[0]);
391 } else {
392 pr_info("%s: ISAR wrong swver response (%x,%x)"
393 " cnt(%d)\n", isar->name, isar->cmsb,
394 isar->clsb, cnt);
395 ret = -EIO;
396 goto reterrflg;
397 }
398 }
399 spin_lock_irqsave(isar->hwlock, flags);
400 isar_setup(isar);
401 spin_unlock_irqrestore(isar->hwlock, flags);
402 ret = 0;
403 reterrflg:
404 spin_lock_irqsave(isar->hwlock, flags);
405 reterror:
406 isar->ch[0].bch.debug = saved_debug;
407 if (ret)
408 /* disable ISAR IRQ */
409 isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
410 spin_unlock_irqrestore(isar->hwlock, flags);
411 return ret;
412 }
413
414 static inline void
deliver_status(struct isar_ch * ch,int status)415 deliver_status(struct isar_ch *ch, int status)
416 {
417 pr_debug("%s: HL->LL FAXIND %x\n", ch->is->name, status);
418 _queue_data(&ch->bch.ch, PH_CONTROL_IND, status, 0, NULL, GFP_ATOMIC);
419 }
420
421 static inline void
isar_rcv_frame(struct isar_ch * ch)422 isar_rcv_frame(struct isar_ch *ch)
423 {
424 u8 *ptr;
425 int maxlen;
426
427 if (!ch->is->clsb) {
428 pr_debug("%s; ISAR zero len frame\n", ch->is->name);
429 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
430 return;
431 }
432 if (test_bit(FLG_RX_OFF, &ch->bch.Flags)) {
433 ch->bch.dropcnt += ch->is->clsb;
434 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
435 return;
436 }
437 switch (ch->bch.state) {
438 case ISDN_P_NONE:
439 pr_debug("%s: ISAR protocol 0 spurious IIS_RDATA %x/%x/%x\n",
440 ch->is->name, ch->is->iis, ch->is->cmsb, ch->is->clsb);
441 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
442 break;
443 case ISDN_P_B_RAW:
444 case ISDN_P_B_L2DTMF:
445 case ISDN_P_B_MODEM_ASYNC:
446 maxlen = bchannel_get_rxbuf(&ch->bch, ch->is->clsb);
447 if (maxlen < 0) {
448 pr_warning("%s.B%d: No bufferspace for %d bytes\n",
449 ch->is->name, ch->bch.nr, ch->is->clsb);
450 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
451 break;
452 }
453 rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
454 recv_Bchannel(&ch->bch, 0, false);
455 break;
456 case ISDN_P_B_HDLC:
457 maxlen = bchannel_get_rxbuf(&ch->bch, ch->is->clsb);
458 if (maxlen < 0) {
459 pr_warning("%s.B%d: No bufferspace for %d bytes\n",
460 ch->is->name, ch->bch.nr, ch->is->clsb);
461 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
462 break;
463 }
464 if (ch->is->cmsb & HDLC_ERROR) {
465 pr_debug("%s: ISAR frame error %x len %d\n",
466 ch->is->name, ch->is->cmsb, ch->is->clsb);
467 #ifdef ERROR_STATISTIC
468 if (ch->is->cmsb & HDLC_ERR_RER)
469 ch->bch.err_inv++;
470 if (ch->is->cmsb & HDLC_ERR_CER)
471 ch->bch.err_crc++;
472 #endif
473 skb_trim(ch->bch.rx_skb, 0);
474 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
475 break;
476 }
477 if (ch->is->cmsb & HDLC_FSD)
478 skb_trim(ch->bch.rx_skb, 0);
479 ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
480 rcv_mbox(ch->is, ptr);
481 if (ch->is->cmsb & HDLC_FED) {
482 if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
483 pr_debug("%s: ISAR frame to short %d\n",
484 ch->is->name, ch->bch.rx_skb->len);
485 skb_trim(ch->bch.rx_skb, 0);
486 break;
487 }
488 skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
489 recv_Bchannel(&ch->bch, 0, false);
490 }
491 break;
492 case ISDN_P_B_T30_FAX:
493 if (ch->state != STFAX_ACTIV) {
494 pr_debug("%s: isar_rcv_frame: not ACTIV\n",
495 ch->is->name);
496 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
497 if (ch->bch.rx_skb)
498 skb_trim(ch->bch.rx_skb, 0);
499 break;
500 }
501 if (!ch->bch.rx_skb) {
502 ch->bch.rx_skb = mI_alloc_skb(ch->bch.maxlen,
503 GFP_ATOMIC);
504 if (unlikely(!ch->bch.rx_skb)) {
505 pr_info("%s: B receive out of memory\n",
506 __func__);
507 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
508 break;
509 }
510 }
511 if (ch->cmd == PCTRL_CMD_FRM) {
512 rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
513 pr_debug("%s: isar_rcv_frame: %d\n",
514 ch->is->name, ch->bch.rx_skb->len);
515 if (ch->is->cmsb & SART_NMD) { /* ABORT */
516 pr_debug("%s: isar_rcv_frame: no more data\n",
517 ch->is->name);
518 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
519 send_mbox(ch->is, SET_DPS(ch->dpath) |
520 ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
521 0, NULL);
522 ch->state = STFAX_ESCAPE;
523 /* set_skb_flag(skb, DF_NOMOREDATA); */
524 }
525 recv_Bchannel(&ch->bch, 0, false);
526 if (ch->is->cmsb & SART_NMD)
527 deliver_status(ch, HW_MOD_NOCARR);
528 break;
529 }
530 if (ch->cmd != PCTRL_CMD_FRH) {
531 pr_debug("%s: isar_rcv_frame: unknown fax mode %x\n",
532 ch->is->name, ch->cmd);
533 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
534 if (ch->bch.rx_skb)
535 skb_trim(ch->bch.rx_skb, 0);
536 break;
537 }
538 /* PCTRL_CMD_FRH */
539 if ((ch->bch.rx_skb->len + ch->is->clsb) >
540 (ch->bch.maxlen + 2)) {
541 pr_info("%s: %s incoming packet too large\n",
542 ch->is->name, __func__);
543 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
544 skb_trim(ch->bch.rx_skb, 0);
545 break;
546 } else if (ch->is->cmsb & HDLC_ERROR) {
547 pr_info("%s: ISAR frame error %x len %d\n",
548 ch->is->name, ch->is->cmsb, ch->is->clsb);
549 skb_trim(ch->bch.rx_skb, 0);
550 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
551 break;
552 }
553 if (ch->is->cmsb & HDLC_FSD)
554 skb_trim(ch->bch.rx_skb, 0);
555 ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
556 rcv_mbox(ch->is, ptr);
557 if (ch->is->cmsb & HDLC_FED) {
558 if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
559 pr_info("%s: ISAR frame to short %d\n",
560 ch->is->name, ch->bch.rx_skb->len);
561 skb_trim(ch->bch.rx_skb, 0);
562 break;
563 }
564 skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
565 recv_Bchannel(&ch->bch, 0, false);
566 }
567 if (ch->is->cmsb & SART_NMD) { /* ABORT */
568 pr_debug("%s: isar_rcv_frame: no more data\n",
569 ch->is->name);
570 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
571 if (ch->bch.rx_skb)
572 skb_trim(ch->bch.rx_skb, 0);
573 send_mbox(ch->is, SET_DPS(ch->dpath) |
574 ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC, 0, NULL);
575 ch->state = STFAX_ESCAPE;
576 deliver_status(ch, HW_MOD_NOCARR);
577 }
578 break;
579 default:
580 pr_info("isar_rcv_frame protocol (%x)error\n", ch->bch.state);
581 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
582 break;
583 }
584 }
585
586 static void
isar_fill_fifo(struct isar_ch * ch)587 isar_fill_fifo(struct isar_ch *ch)
588 {
589 int count;
590 u8 msb;
591 u8 *ptr;
592
593 pr_debug("%s: ch%d tx_skb %d tx_idx %d\n", ch->is->name, ch->bch.nr,
594 ch->bch.tx_skb ? ch->bch.tx_skb->len : -1, ch->bch.tx_idx);
595 if (!(ch->is->bstat &
596 (ch->dpath == 1 ? BSTAT_RDM1 : BSTAT_RDM2)))
597 return;
598 if (!ch->bch.tx_skb) {
599 if (!test_bit(FLG_TX_EMPTY, &ch->bch.Flags) ||
600 (ch->bch.state != ISDN_P_B_RAW))
601 return;
602 count = ch->mml;
603 /* use the card buffer */
604 memset(ch->is->buf, ch->bch.fill[0], count);
605 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
606 0, count, ch->is->buf);
607 return;
608 }
609 count = ch->bch.tx_skb->len - ch->bch.tx_idx;
610 if (count <= 0)
611 return;
612 if (count > ch->mml) {
613 msb = 0;
614 count = ch->mml;
615 } else {
616 msb = HDLC_FED;
617 }
618 ptr = ch->bch.tx_skb->data + ch->bch.tx_idx;
619 if (!ch->bch.tx_idx) {
620 pr_debug("%s: frame start\n", ch->is->name);
621 if ((ch->bch.state == ISDN_P_B_T30_FAX) &&
622 (ch->cmd == PCTRL_CMD_FTH)) {
623 if (count > 1) {
624 if ((ptr[0] == 0xff) && (ptr[1] == 0x13)) {
625 /* last frame */
626 test_and_set_bit(FLG_LASTDATA,
627 &ch->bch.Flags);
628 pr_debug("%s: set LASTDATA\n",
629 ch->is->name);
630 if (msb == HDLC_FED)
631 test_and_set_bit(FLG_DLEETX,
632 &ch->bch.Flags);
633 }
634 }
635 }
636 msb |= HDLC_FST;
637 }
638 ch->bch.tx_idx += count;
639 switch (ch->bch.state) {
640 case ISDN_P_NONE:
641 pr_info("%s: wrong protocol 0\n", __func__);
642 break;
643 case ISDN_P_B_RAW:
644 case ISDN_P_B_L2DTMF:
645 case ISDN_P_B_MODEM_ASYNC:
646 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
647 0, count, ptr);
648 break;
649 case ISDN_P_B_HDLC:
650 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
651 msb, count, ptr);
652 break;
653 case ISDN_P_B_T30_FAX:
654 if (ch->state != STFAX_ACTIV)
655 pr_debug("%s: not ACTIV\n", ch->is->name);
656 else if (ch->cmd == PCTRL_CMD_FTH)
657 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
658 msb, count, ptr);
659 else if (ch->cmd == PCTRL_CMD_FTM)
660 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
661 0, count, ptr);
662 else
663 pr_debug("%s: not FTH/FTM\n", ch->is->name);
664 break;
665 default:
666 pr_info("%s: protocol(%x) error\n",
667 __func__, ch->bch.state);
668 break;
669 }
670 }
671
672 static inline struct isar_ch *
sel_bch_isar(struct isar_hw * isar,u8 dpath)673 sel_bch_isar(struct isar_hw *isar, u8 dpath)
674 {
675 struct isar_ch *base = &isar->ch[0];
676
677 if ((!dpath) || (dpath > 2))
678 return NULL;
679 if (base->dpath == dpath)
680 return base;
681 base++;
682 if (base->dpath == dpath)
683 return base;
684 return NULL;
685 }
686
687 static void
send_next(struct isar_ch * ch)688 send_next(struct isar_ch *ch)
689 {
690 pr_debug("%s: %s ch%d tx_skb %d tx_idx %d\n", ch->is->name, __func__,
691 ch->bch.nr, ch->bch.tx_skb ? ch->bch.tx_skb->len : -1,
692 ch->bch.tx_idx);
693 if (ch->bch.state == ISDN_P_B_T30_FAX) {
694 if (ch->cmd == PCTRL_CMD_FTH) {
695 if (test_bit(FLG_LASTDATA, &ch->bch.Flags)) {
696 pr_debug("set NMD_DATA\n");
697 test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
698 }
699 } else if (ch->cmd == PCTRL_CMD_FTM) {
700 if (test_bit(FLG_DLEETX, &ch->bch.Flags)) {
701 test_and_set_bit(FLG_LASTDATA, &ch->bch.Flags);
702 test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
703 }
704 }
705 }
706 if (ch->bch.tx_skb)
707 dev_kfree_skb(ch->bch.tx_skb);
708 if (get_next_bframe(&ch->bch)) {
709 isar_fill_fifo(ch);
710 test_and_clear_bit(FLG_TX_EMPTY, &ch->bch.Flags);
711 } else if (test_bit(FLG_TX_EMPTY, &ch->bch.Flags)) {
712 isar_fill_fifo(ch);
713 } else {
714 if (test_and_clear_bit(FLG_DLEETX, &ch->bch.Flags)) {
715 if (test_and_clear_bit(FLG_LASTDATA,
716 &ch->bch.Flags)) {
717 if (test_and_clear_bit(FLG_NMD_DATA,
718 &ch->bch.Flags)) {
719 u8 zd = 0;
720 send_mbox(ch->is, SET_DPS(ch->dpath) |
721 ISAR_HIS_SDATA, 0x01, 1, &zd);
722 }
723 test_and_set_bit(FLG_LL_OK, &ch->bch.Flags);
724 } else {
725 deliver_status(ch, HW_MOD_CONNECT);
726 }
727 } else if (test_bit(FLG_FILLEMPTY, &ch->bch.Flags)) {
728 test_and_set_bit(FLG_TX_EMPTY, &ch->bch.Flags);
729 }
730 }
731 }
732
733 static void
check_send(struct isar_hw * isar,u8 rdm)734 check_send(struct isar_hw *isar, u8 rdm)
735 {
736 struct isar_ch *ch;
737
738 pr_debug("%s: rdm %x\n", isar->name, rdm);
739 if (rdm & BSTAT_RDM1) {
740 ch = sel_bch_isar(isar, 1);
741 if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
742 if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
743 ch->bch.tx_idx))
744 isar_fill_fifo(ch);
745 else
746 send_next(ch);
747 }
748 }
749 if (rdm & BSTAT_RDM2) {
750 ch = sel_bch_isar(isar, 2);
751 if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
752 if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
753 ch->bch.tx_idx))
754 isar_fill_fifo(ch);
755 else
756 send_next(ch);
757 }
758 }
759 }
760
761 const char *dmril[] = {"NO SPEED", "1200/75", "NODEF2", "75/1200", "NODEF4",
762 "300", "600", "1200", "2400", "4800", "7200",
763 "9600nt", "9600t", "12000", "14400", "WRONG"};
764 const char *dmrim[] = {"NO MOD", "NO DEF", "V32/V32b", "V22", "V21",
765 "Bell103", "V23", "Bell202", "V17", "V29", "V27ter"};
766
767 static void
isar_pump_status_rsp(struct isar_ch * ch)768 isar_pump_status_rsp(struct isar_ch *ch) {
769 u8 ril = ch->is->buf[0];
770 u8 rim;
771
772 if (!test_and_clear_bit(ISAR_RATE_REQ, &ch->is->Flags))
773 return;
774 if (ril > 14) {
775 pr_info("%s: wrong pstrsp ril=%d\n", ch->is->name, ril);
776 ril = 15;
777 }
778 switch (ch->is->buf[1]) {
779 case 0:
780 rim = 0;
781 break;
782 case 0x20:
783 rim = 2;
784 break;
785 case 0x40:
786 rim = 3;
787 break;
788 case 0x41:
789 rim = 4;
790 break;
791 case 0x51:
792 rim = 5;
793 break;
794 case 0x61:
795 rim = 6;
796 break;
797 case 0x71:
798 rim = 7;
799 break;
800 case 0x82:
801 rim = 8;
802 break;
803 case 0x92:
804 rim = 9;
805 break;
806 case 0xa2:
807 rim = 10;
808 break;
809 default:
810 rim = 1;
811 break;
812 }
813 sprintf(ch->conmsg, "%s %s", dmril[ril], dmrim[rim]);
814 pr_debug("%s: pump strsp %s\n", ch->is->name, ch->conmsg);
815 }
816
817 static void
isar_pump_statev_modem(struct isar_ch * ch,u8 devt)818 isar_pump_statev_modem(struct isar_ch *ch, u8 devt) {
819 u8 dps = SET_DPS(ch->dpath);
820
821 switch (devt) {
822 case PSEV_10MS_TIMER:
823 pr_debug("%s: pump stev TIMER\n", ch->is->name);
824 break;
825 case PSEV_CON_ON:
826 pr_debug("%s: pump stev CONNECT\n", ch->is->name);
827 deliver_status(ch, HW_MOD_CONNECT);
828 break;
829 case PSEV_CON_OFF:
830 pr_debug("%s: pump stev NO CONNECT\n", ch->is->name);
831 send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
832 deliver_status(ch, HW_MOD_NOCARR);
833 break;
834 case PSEV_V24_OFF:
835 pr_debug("%s: pump stev V24 OFF\n", ch->is->name);
836 break;
837 case PSEV_CTS_ON:
838 pr_debug("%s: pump stev CTS ON\n", ch->is->name);
839 break;
840 case PSEV_CTS_OFF:
841 pr_debug("%s pump stev CTS OFF\n", ch->is->name);
842 break;
843 case PSEV_DCD_ON:
844 pr_debug("%s: pump stev CARRIER ON\n", ch->is->name);
845 test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
846 send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
847 break;
848 case PSEV_DCD_OFF:
849 pr_debug("%s: pump stev CARRIER OFF\n", ch->is->name);
850 break;
851 case PSEV_DSR_ON:
852 pr_debug("%s: pump stev DSR ON\n", ch->is->name);
853 break;
854 case PSEV_DSR_OFF:
855 pr_debug("%s: pump stev DSR_OFF\n", ch->is->name);
856 break;
857 case PSEV_REM_RET:
858 pr_debug("%s: pump stev REMOTE RETRAIN\n", ch->is->name);
859 break;
860 case PSEV_REM_REN:
861 pr_debug("%s: pump stev REMOTE RENEGOTIATE\n", ch->is->name);
862 break;
863 case PSEV_GSTN_CLR:
864 pr_debug("%s: pump stev GSTN CLEAR\n", ch->is->name);
865 break;
866 default:
867 pr_info("u%s: unknown pump stev %x\n", ch->is->name, devt);
868 break;
869 }
870 }
871
872 static void
isar_pump_statev_fax(struct isar_ch * ch,u8 devt)873 isar_pump_statev_fax(struct isar_ch *ch, u8 devt) {
874 u8 dps = SET_DPS(ch->dpath);
875 u8 p1;
876
877 switch (devt) {
878 case PSEV_10MS_TIMER:
879 pr_debug("%s: pump stev TIMER\n", ch->is->name);
880 break;
881 case PSEV_RSP_READY:
882 pr_debug("%s: pump stev RSP_READY\n", ch->is->name);
883 ch->state = STFAX_READY;
884 deliver_status(ch, HW_MOD_READY);
885 #ifdef AUTOCON
886 if (test_bit(BC_FLG_ORIG, &ch->bch.Flags))
887 isar_pump_cmd(bch, HW_MOD_FRH, 3);
888 else
889 isar_pump_cmd(bch, HW_MOD_FTH, 3);
890 #endif
891 break;
892 case PSEV_LINE_TX_H:
893 if (ch->state == STFAX_LINE) {
894 pr_debug("%s: pump stev LINE_TX_H\n", ch->is->name);
895 ch->state = STFAX_CONT;
896 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
897 PCTRL_CMD_CONT, 0, NULL);
898 } else {
899 pr_debug("%s: pump stev LINE_TX_H wrong st %x\n",
900 ch->is->name, ch->state);
901 }
902 break;
903 case PSEV_LINE_RX_H:
904 if (ch->state == STFAX_LINE) {
905 pr_debug("%s: pump stev LINE_RX_H\n", ch->is->name);
906 ch->state = STFAX_CONT;
907 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
908 PCTRL_CMD_CONT, 0, NULL);
909 } else {
910 pr_debug("%s: pump stev LINE_RX_H wrong st %x\n",
911 ch->is->name, ch->state);
912 }
913 break;
914 case PSEV_LINE_TX_B:
915 if (ch->state == STFAX_LINE) {
916 pr_debug("%s: pump stev LINE_TX_B\n", ch->is->name);
917 ch->state = STFAX_CONT;
918 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
919 PCTRL_CMD_CONT, 0, NULL);
920 } else {
921 pr_debug("%s: pump stev LINE_TX_B wrong st %x\n",
922 ch->is->name, ch->state);
923 }
924 break;
925 case PSEV_LINE_RX_B:
926 if (ch->state == STFAX_LINE) {
927 pr_debug("%s: pump stev LINE_RX_B\n", ch->is->name);
928 ch->state = STFAX_CONT;
929 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
930 PCTRL_CMD_CONT, 0, NULL);
931 } else {
932 pr_debug("%s: pump stev LINE_RX_B wrong st %x\n",
933 ch->is->name, ch->state);
934 }
935 break;
936 case PSEV_RSP_CONN:
937 if (ch->state == STFAX_CONT) {
938 pr_debug("%s: pump stev RSP_CONN\n", ch->is->name);
939 ch->state = STFAX_ACTIV;
940 test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
941 send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
942 if (ch->cmd == PCTRL_CMD_FTH) {
943 int delay = (ch->mod == 3) ? 1000 : 200;
944 /* 1s (200 ms) Flags before data */
945 if (test_and_set_bit(FLG_FTI_RUN,
946 &ch->bch.Flags))
947 del_timer(&ch->ftimer);
948 ch->ftimer.expires =
949 jiffies + ((delay * HZ) / 1000);
950 test_and_set_bit(FLG_LL_CONN,
951 &ch->bch.Flags);
952 add_timer(&ch->ftimer);
953 } else {
954 deliver_status(ch, HW_MOD_CONNECT);
955 }
956 } else {
957 pr_debug("%s: pump stev RSP_CONN wrong st %x\n",
958 ch->is->name, ch->state);
959 }
960 break;
961 case PSEV_FLAGS_DET:
962 pr_debug("%s: pump stev FLAGS_DET\n", ch->is->name);
963 break;
964 case PSEV_RSP_DISC:
965 pr_debug("%s: pump stev RSP_DISC state(%d)\n",
966 ch->is->name, ch->state);
967 if (ch->state == STFAX_ESCAPE) {
968 p1 = 5;
969 switch (ch->newcmd) {
970 case 0:
971 ch->state = STFAX_READY;
972 break;
973 case PCTRL_CMD_FTM:
974 p1 = 2;
975 /* fall through */
976 case PCTRL_CMD_FTH:
977 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
978 PCTRL_CMD_SILON, 1, &p1);
979 ch->state = STFAX_SILDET;
980 break;
981 case PCTRL_CMD_FRH:
982 case PCTRL_CMD_FRM:
983 ch->mod = ch->newmod;
984 p1 = ch->newmod;
985 ch->newmod = 0;
986 ch->cmd = ch->newcmd;
987 ch->newcmd = 0;
988 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
989 ch->cmd, 1, &p1);
990 ch->state = STFAX_LINE;
991 ch->try_mod = 3;
992 break;
993 default:
994 pr_debug("%s: RSP_DISC unknown newcmd %x\n",
995 ch->is->name, ch->newcmd);
996 break;
997 }
998 } else if (ch->state == STFAX_ACTIV) {
999 if (test_and_clear_bit(FLG_LL_OK, &ch->bch.Flags))
1000 deliver_status(ch, HW_MOD_OK);
1001 else if (ch->cmd == PCTRL_CMD_FRM)
1002 deliver_status(ch, HW_MOD_NOCARR);
1003 else
1004 deliver_status(ch, HW_MOD_FCERROR);
1005 ch->state = STFAX_READY;
1006 } else if (ch->state != STFAX_SILDET) {
1007 /* ignore in STFAX_SILDET */
1008 ch->state = STFAX_READY;
1009 deliver_status(ch, HW_MOD_FCERROR);
1010 }
1011 break;
1012 case PSEV_RSP_SILDET:
1013 pr_debug("%s: pump stev RSP_SILDET\n", ch->is->name);
1014 if (ch->state == STFAX_SILDET) {
1015 ch->mod = ch->newmod;
1016 p1 = ch->newmod;
1017 ch->newmod = 0;
1018 ch->cmd = ch->newcmd;
1019 ch->newcmd = 0;
1020 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
1021 ch->cmd, 1, &p1);
1022 ch->state = STFAX_LINE;
1023 ch->try_mod = 3;
1024 }
1025 break;
1026 case PSEV_RSP_SILOFF:
1027 pr_debug("%s: pump stev RSP_SILOFF\n", ch->is->name);
1028 break;
1029 case PSEV_RSP_FCERR:
1030 if (ch->state == STFAX_LINE) {
1031 pr_debug("%s: pump stev RSP_FCERR try %d\n",
1032 ch->is->name, ch->try_mod);
1033 if (ch->try_mod--) {
1034 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
1035 ch->cmd, 1, &ch->mod);
1036 break;
1037 }
1038 }
1039 pr_debug("%s: pump stev RSP_FCERR\n", ch->is->name);
1040 ch->state = STFAX_ESCAPE;
1041 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
1042 0, NULL);
1043 deliver_status(ch, HW_MOD_FCERROR);
1044 break;
1045 default:
1046 break;
1047 }
1048 }
1049
1050 void
mISDNisar_irq(struct isar_hw * isar)1051 mISDNisar_irq(struct isar_hw *isar)
1052 {
1053 struct isar_ch *ch;
1054
1055 get_irq_infos(isar);
1056 switch (isar->iis & ISAR_IIS_MSCMSD) {
1057 case ISAR_IIS_RDATA:
1058 ch = sel_bch_isar(isar, isar->iis >> 6);
1059 if (ch)
1060 isar_rcv_frame(ch);
1061 else {
1062 pr_debug("%s: ISAR spurious IIS_RDATA %x/%x/%x\n",
1063 isar->name, isar->iis, isar->cmsb,
1064 isar->clsb);
1065 isar->write_reg(isar->hw, ISAR_IIA, 0);
1066 }
1067 break;
1068 case ISAR_IIS_GSTEV:
1069 isar->write_reg(isar->hw, ISAR_IIA, 0);
1070 isar->bstat |= isar->cmsb;
1071 check_send(isar, isar->cmsb);
1072 break;
1073 case ISAR_IIS_BSTEV:
1074 #ifdef ERROR_STATISTIC
1075 ch = sel_bch_isar(isar, isar->iis >> 6);
1076 if (ch) {
1077 if (isar->cmsb == BSTEV_TBO)
1078 ch->bch.err_tx++;
1079 if (isar->cmsb == BSTEV_RBO)
1080 ch->bch.err_rdo++;
1081 }
1082 #endif
1083 pr_debug("%s: Buffer STEV dpath%d msb(%x)\n",
1084 isar->name, isar->iis >> 6, isar->cmsb);
1085 isar->write_reg(isar->hw, ISAR_IIA, 0);
1086 break;
1087 case ISAR_IIS_PSTEV:
1088 ch = sel_bch_isar(isar, isar->iis >> 6);
1089 if (ch) {
1090 rcv_mbox(isar, NULL);
1091 if (ch->bch.state == ISDN_P_B_MODEM_ASYNC)
1092 isar_pump_statev_modem(ch, isar->cmsb);
1093 else if (ch->bch.state == ISDN_P_B_T30_FAX)
1094 isar_pump_statev_fax(ch, isar->cmsb);
1095 else if (ch->bch.state == ISDN_P_B_RAW) {
1096 int tt;
1097 tt = isar->cmsb | 0x30;
1098 if (tt == 0x3e)
1099 tt = '*';
1100 else if (tt == 0x3f)
1101 tt = '#';
1102 else if (tt > '9')
1103 tt += 7;
1104 tt |= DTMF_TONE_VAL;
1105 _queue_data(&ch->bch.ch, PH_CONTROL_IND,
1106 MISDN_ID_ANY, sizeof(tt), &tt,
1107 GFP_ATOMIC);
1108 } else
1109 pr_debug("%s: ISAR IIS_PSTEV pm %d sta %x\n",
1110 isar->name, ch->bch.state,
1111 isar->cmsb);
1112 } else {
1113 pr_debug("%s: ISAR spurious IIS_PSTEV %x/%x/%x\n",
1114 isar->name, isar->iis, isar->cmsb,
1115 isar->clsb);
1116 isar->write_reg(isar->hw, ISAR_IIA, 0);
1117 }
1118 break;
1119 case ISAR_IIS_PSTRSP:
1120 ch = sel_bch_isar(isar, isar->iis >> 6);
1121 if (ch) {
1122 rcv_mbox(isar, NULL);
1123 isar_pump_status_rsp(ch);
1124 } else {
1125 pr_debug("%s: ISAR spurious IIS_PSTRSP %x/%x/%x\n",
1126 isar->name, isar->iis, isar->cmsb,
1127 isar->clsb);
1128 isar->write_reg(isar->hw, ISAR_IIA, 0);
1129 }
1130 break;
1131 case ISAR_IIS_DIAG:
1132 case ISAR_IIS_BSTRSP:
1133 case ISAR_IIS_IOM2RSP:
1134 rcv_mbox(isar, NULL);
1135 break;
1136 case ISAR_IIS_INVMSG:
1137 rcv_mbox(isar, NULL);
1138 pr_debug("%s: invalid msg his:%x\n", isar->name, isar->cmsb);
1139 break;
1140 default:
1141 rcv_mbox(isar, NULL);
1142 pr_debug("%s: unhandled msg iis(%x) ctrl(%x/%x)\n",
1143 isar->name, isar->iis, isar->cmsb, isar->clsb);
1144 break;
1145 }
1146 }
1147 EXPORT_SYMBOL(mISDNisar_irq);
1148
1149 static void
ftimer_handler(struct timer_list * t)1150 ftimer_handler(struct timer_list *t)
1151 {
1152 struct isar_ch *ch = from_timer(ch, t, ftimer);
1153
1154 pr_debug("%s: ftimer flags %lx\n", ch->is->name, ch->bch.Flags);
1155 test_and_clear_bit(FLG_FTI_RUN, &ch->bch.Flags);
1156 if (test_and_clear_bit(FLG_LL_CONN, &ch->bch.Flags))
1157 deliver_status(ch, HW_MOD_CONNECT);
1158 }
1159
1160 static void
setup_pump(struct isar_ch * ch)1161 setup_pump(struct isar_ch *ch) {
1162 u8 dps = SET_DPS(ch->dpath);
1163 u8 ctrl, param[6];
1164
1165 switch (ch->bch.state) {
1166 case ISDN_P_NONE:
1167 case ISDN_P_B_RAW:
1168 case ISDN_P_B_HDLC:
1169 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, PMOD_BYPASS, 0, NULL);
1170 break;
1171 case ISDN_P_B_L2DTMF:
1172 if (test_bit(FLG_DTMFSEND, &ch->bch.Flags)) {
1173 param[0] = 5; /* TOA 5 db */
1174 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
1175 PMOD_DTMF_TRANS, 1, param);
1176 } else {
1177 param[0] = 40; /* REL -46 dbm */
1178 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
1179 PMOD_DTMF, 1, param);
1180 }
1181 /* fall through */
1182 case ISDN_P_B_MODEM_ASYNC:
1183 ctrl = PMOD_DATAMODEM;
1184 if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
1185 ctrl |= PCTRL_ORIG;
1186 param[5] = PV32P6_CTN;
1187 } else {
1188 param[5] = PV32P6_ATN;
1189 }
1190 param[0] = 6; /* 6 db */
1191 param[1] = PV32P2_V23R | PV32P2_V22A | PV32P2_V22B |
1192 PV32P2_V22C | PV32P2_V21 | PV32P2_BEL;
1193 param[2] = PV32P3_AMOD | PV32P3_V32B | PV32P3_V23B;
1194 param[3] = PV32P4_UT144;
1195 param[4] = PV32P5_UT144;
1196 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 6, param);
1197 break;
1198 case ISDN_P_B_T30_FAX:
1199 ctrl = PMOD_FAX;
1200 if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
1201 ctrl |= PCTRL_ORIG;
1202 param[1] = PFAXP2_CTN;
1203 } else {
1204 param[1] = PFAXP2_ATN;
1205 }
1206 param[0] = 6; /* 6 db */
1207 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 2, param);
1208 ch->state = STFAX_NULL;
1209 ch->newcmd = 0;
1210 ch->newmod = 0;
1211 test_and_set_bit(FLG_FTI_RUN, &ch->bch.Flags);
1212 break;
1213 }
1214 udelay(1000);
1215 send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
1216 udelay(1000);
1217 }
1218
1219 static void
setup_sart(struct isar_ch * ch)1220 setup_sart(struct isar_ch *ch) {
1221 u8 dps = SET_DPS(ch->dpath);
1222 u8 ctrl, param[2] = {0, 0};
1223
1224 switch (ch->bch.state) {
1225 case ISDN_P_NONE:
1226 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_DISABLE,
1227 0, NULL);
1228 break;
1229 case ISDN_P_B_RAW:
1230 case ISDN_P_B_L2DTMF:
1231 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_BINARY,
1232 2, param);
1233 break;
1234 case ISDN_P_B_HDLC:
1235 case ISDN_P_B_T30_FAX:
1236 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_HDLC,
1237 1, param);
1238 break;
1239 case ISDN_P_B_MODEM_ASYNC:
1240 ctrl = SMODE_V14 | SCTRL_HDMC_BOTH;
1241 param[0] = S_P1_CHS_8;
1242 param[1] = S_P2_BFT_DEF;
1243 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, ctrl, 2, param);
1244 break;
1245 }
1246 udelay(1000);
1247 send_mbox(ch->is, dps | ISAR_HIS_BSTREQ, 0, 0, NULL);
1248 udelay(1000);
1249 }
1250
1251 static void
setup_iom2(struct isar_ch * ch)1252 setup_iom2(struct isar_ch *ch) {
1253 u8 dps = SET_DPS(ch->dpath);
1254 u8 cmsb = IOM_CTRL_ENA, msg[5] = {IOM_P1_TXD, 0, 0, 0, 0};
1255
1256 if (ch->bch.nr == 2) {
1257 msg[1] = 1;
1258 msg[3] = 1;
1259 }
1260 switch (ch->bch.state) {
1261 case ISDN_P_NONE:
1262 cmsb = 0;
1263 /* dummy slot */
1264 msg[1] = ch->dpath + 2;
1265 msg[3] = ch->dpath + 2;
1266 break;
1267 case ISDN_P_B_RAW:
1268 case ISDN_P_B_HDLC:
1269 break;
1270 case ISDN_P_B_MODEM_ASYNC:
1271 case ISDN_P_B_T30_FAX:
1272 cmsb |= IOM_CTRL_RCV;
1273 /* fall through */
1274 case ISDN_P_B_L2DTMF:
1275 if (test_bit(FLG_DTMFSEND, &ch->bch.Flags))
1276 cmsb |= IOM_CTRL_RCV;
1277 cmsb |= IOM_CTRL_ALAW;
1278 break;
1279 }
1280 send_mbox(ch->is, dps | ISAR_HIS_IOM2CFG, cmsb, 5, msg);
1281 udelay(1000);
1282 send_mbox(ch->is, dps | ISAR_HIS_IOM2REQ, 0, 0, NULL);
1283 udelay(1000);
1284 }
1285
1286 static int
modeisar(struct isar_ch * ch,u32 bprotocol)1287 modeisar(struct isar_ch *ch, u32 bprotocol)
1288 {
1289 /* Here we are selecting the best datapath for requested protocol */
1290 if (ch->bch.state == ISDN_P_NONE) { /* New Setup */
1291 switch (bprotocol) {
1292 case ISDN_P_NONE: /* init */
1293 if (!ch->dpath)
1294 /* no init for dpath 0 */
1295 return 0;
1296 test_and_clear_bit(FLG_HDLC, &ch->bch.Flags);
1297 test_and_clear_bit(FLG_TRANSPARENT, &ch->bch.Flags);
1298 break;
1299 case ISDN_P_B_RAW:
1300 case ISDN_P_B_HDLC:
1301 /* best is datapath 2 */
1302 if (!test_and_set_bit(ISAR_DP2_USE, &ch->is->Flags))
1303 ch->dpath = 2;
1304 else if (!test_and_set_bit(ISAR_DP1_USE,
1305 &ch->is->Flags))
1306 ch->dpath = 1;
1307 else {
1308 pr_info("modeisar both paths in use\n");
1309 return -EBUSY;
1310 }
1311 if (bprotocol == ISDN_P_B_HDLC)
1312 test_and_set_bit(FLG_HDLC, &ch->bch.Flags);
1313 else
1314 test_and_set_bit(FLG_TRANSPARENT,
1315 &ch->bch.Flags);
1316 break;
1317 case ISDN_P_B_MODEM_ASYNC:
1318 case ISDN_P_B_T30_FAX:
1319 case ISDN_P_B_L2DTMF:
1320 /* only datapath 1 */
1321 if (!test_and_set_bit(ISAR_DP1_USE, &ch->is->Flags))
1322 ch->dpath = 1;
1323 else {
1324 pr_info("%s: ISAR modeisar analog functions"
1325 "only with DP1\n", ch->is->name);
1326 return -EBUSY;
1327 }
1328 break;
1329 default:
1330 pr_info("%s: protocol not known %x\n", ch->is->name,
1331 bprotocol);
1332 return -ENOPROTOOPT;
1333 }
1334 }
1335 pr_debug("%s: ISAR ch%d dp%d protocol %x->%x\n", ch->is->name,
1336 ch->bch.nr, ch->dpath, ch->bch.state, bprotocol);
1337 ch->bch.state = bprotocol;
1338 setup_pump(ch);
1339 setup_iom2(ch);
1340 setup_sart(ch);
1341 if (ch->bch.state == ISDN_P_NONE) {
1342 /* Clear resources */
1343 if (ch->dpath == 1)
1344 test_and_clear_bit(ISAR_DP1_USE, &ch->is->Flags);
1345 else if (ch->dpath == 2)
1346 test_and_clear_bit(ISAR_DP2_USE, &ch->is->Flags);
1347 ch->dpath = 0;
1348 ch->is->ctrl(ch->is->hw, HW_DEACT_IND, ch->bch.nr);
1349 } else
1350 ch->is->ctrl(ch->is->hw, HW_ACTIVATE_IND, ch->bch.nr);
1351 return 0;
1352 }
1353
1354 static void
isar_pump_cmd(struct isar_ch * ch,u32 cmd,u8 para)1355 isar_pump_cmd(struct isar_ch *ch, u32 cmd, u8 para)
1356 {
1357 u8 dps = SET_DPS(ch->dpath);
1358 u8 ctrl = 0, nom = 0, p1 = 0;
1359
1360 pr_debug("%s: isar_pump_cmd %x/%x state(%x)\n",
1361 ch->is->name, cmd, para, ch->bch.state);
1362 switch (cmd) {
1363 case HW_MOD_FTM:
1364 if (ch->state == STFAX_READY) {
1365 p1 = para;
1366 ctrl = PCTRL_CMD_FTM;
1367 nom = 1;
1368 ch->state = STFAX_LINE;
1369 ch->cmd = ctrl;
1370 ch->mod = para;
1371 ch->newmod = 0;
1372 ch->newcmd = 0;
1373 ch->try_mod = 3;
1374 } else if ((ch->state == STFAX_ACTIV) &&
1375 (ch->cmd == PCTRL_CMD_FTM) && (ch->mod == para))
1376 deliver_status(ch, HW_MOD_CONNECT);
1377 else {
1378 ch->newmod = para;
1379 ch->newcmd = PCTRL_CMD_FTM;
1380 nom = 0;
1381 ctrl = PCTRL_CMD_ESC;
1382 ch->state = STFAX_ESCAPE;
1383 }
1384 break;
1385 case HW_MOD_FTH:
1386 if (ch->state == STFAX_READY) {
1387 p1 = para;
1388 ctrl = PCTRL_CMD_FTH;
1389 nom = 1;
1390 ch->state = STFAX_LINE;
1391 ch->cmd = ctrl;
1392 ch->mod = para;
1393 ch->newmod = 0;
1394 ch->newcmd = 0;
1395 ch->try_mod = 3;
1396 } else if ((ch->state == STFAX_ACTIV) &&
1397 (ch->cmd == PCTRL_CMD_FTH) && (ch->mod == para))
1398 deliver_status(ch, HW_MOD_CONNECT);
1399 else {
1400 ch->newmod = para;
1401 ch->newcmd = PCTRL_CMD_FTH;
1402 nom = 0;
1403 ctrl = PCTRL_CMD_ESC;
1404 ch->state = STFAX_ESCAPE;
1405 }
1406 break;
1407 case HW_MOD_FRM:
1408 if (ch->state == STFAX_READY) {
1409 p1 = para;
1410 ctrl = PCTRL_CMD_FRM;
1411 nom = 1;
1412 ch->state = STFAX_LINE;
1413 ch->cmd = ctrl;
1414 ch->mod = para;
1415 ch->newmod = 0;
1416 ch->newcmd = 0;
1417 ch->try_mod = 3;
1418 } else if ((ch->state == STFAX_ACTIV) &&
1419 (ch->cmd == PCTRL_CMD_FRM) && (ch->mod == para))
1420 deliver_status(ch, HW_MOD_CONNECT);
1421 else {
1422 ch->newmod = para;
1423 ch->newcmd = PCTRL_CMD_FRM;
1424 nom = 0;
1425 ctrl = PCTRL_CMD_ESC;
1426 ch->state = STFAX_ESCAPE;
1427 }
1428 break;
1429 case HW_MOD_FRH:
1430 if (ch->state == STFAX_READY) {
1431 p1 = para;
1432 ctrl = PCTRL_CMD_FRH;
1433 nom = 1;
1434 ch->state = STFAX_LINE;
1435 ch->cmd = ctrl;
1436 ch->mod = para;
1437 ch->newmod = 0;
1438 ch->newcmd = 0;
1439 ch->try_mod = 3;
1440 } else if ((ch->state == STFAX_ACTIV) &&
1441 (ch->cmd == PCTRL_CMD_FRH) && (ch->mod == para))
1442 deliver_status(ch, HW_MOD_CONNECT);
1443 else {
1444 ch->newmod = para;
1445 ch->newcmd = PCTRL_CMD_FRH;
1446 nom = 0;
1447 ctrl = PCTRL_CMD_ESC;
1448 ch->state = STFAX_ESCAPE;
1449 }
1450 break;
1451 case PCTRL_CMD_TDTMF:
1452 p1 = para;
1453 nom = 1;
1454 ctrl = PCTRL_CMD_TDTMF;
1455 break;
1456 }
1457 if (ctrl)
1458 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, ctrl, nom, &p1);
1459 }
1460
1461 static void
isar_setup(struct isar_hw * isar)1462 isar_setup(struct isar_hw *isar)
1463 {
1464 u8 msg;
1465 int i;
1466
1467 /* Dpath 1, 2 */
1468 msg = 61;
1469 for (i = 0; i < 2; i++) {
1470 /* Buffer Config */
1471 send_mbox(isar, (i ? ISAR_HIS_DPS2 : ISAR_HIS_DPS1) |
1472 ISAR_HIS_P12CFG, 4, 1, &msg);
1473 isar->ch[i].mml = msg;
1474 isar->ch[i].bch.state = 0;
1475 isar->ch[i].dpath = i + 1;
1476 modeisar(&isar->ch[i], ISDN_P_NONE);
1477 }
1478 }
1479
1480 static int
isar_l2l1(struct mISDNchannel * ch,struct sk_buff * skb)1481 isar_l2l1(struct mISDNchannel *ch, struct sk_buff *skb)
1482 {
1483 struct bchannel *bch = container_of(ch, struct bchannel, ch);
1484 struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
1485 int ret = -EINVAL;
1486 struct mISDNhead *hh = mISDN_HEAD_P(skb);
1487 u32 id, *val;
1488 u_long flags;
1489
1490 switch (hh->prim) {
1491 case PH_DATA_REQ:
1492 spin_lock_irqsave(ich->is->hwlock, flags);
1493 ret = bchannel_senddata(bch, skb);
1494 if (ret > 0) { /* direct TX */
1495 ret = 0;
1496 isar_fill_fifo(ich);
1497 }
1498 spin_unlock_irqrestore(ich->is->hwlock, flags);
1499 return ret;
1500 case PH_ACTIVATE_REQ:
1501 spin_lock_irqsave(ich->is->hwlock, flags);
1502 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
1503 ret = modeisar(ich, ch->protocol);
1504 else
1505 ret = 0;
1506 spin_unlock_irqrestore(ich->is->hwlock, flags);
1507 if (!ret)
1508 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
1509 NULL, GFP_KERNEL);
1510 break;
1511 case PH_DEACTIVATE_REQ:
1512 spin_lock_irqsave(ich->is->hwlock, flags);
1513 mISDN_clear_bchannel(bch);
1514 modeisar(ich, ISDN_P_NONE);
1515 spin_unlock_irqrestore(ich->is->hwlock, flags);
1516 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
1517 NULL, GFP_KERNEL);
1518 ret = 0;
1519 break;
1520 case PH_CONTROL_REQ:
1521 val = (u32 *)skb->data;
1522 pr_debug("%s: PH_CONTROL | REQUEST %x/%x\n", ich->is->name,
1523 hh->id, *val);
1524 if ((hh->id == 0) && ((*val & ~DTMF_TONE_MASK) ==
1525 DTMF_TONE_VAL)) {
1526 if (bch->state == ISDN_P_B_L2DTMF) {
1527 char tt = *val & DTMF_TONE_MASK;
1528
1529 if (tt == '*')
1530 tt = 0x1e;
1531 else if (tt == '#')
1532 tt = 0x1f;
1533 else if (tt > '9')
1534 tt -= 7;
1535 tt &= 0x1f;
1536 spin_lock_irqsave(ich->is->hwlock, flags);
1537 isar_pump_cmd(ich, PCTRL_CMD_TDTMF, tt);
1538 spin_unlock_irqrestore(ich->is->hwlock, flags);
1539 } else {
1540 pr_info("%s: DTMF send wrong protocol %x\n",
1541 __func__, bch->state);
1542 return -EINVAL;
1543 }
1544 } else if ((hh->id == HW_MOD_FRM) || (hh->id == HW_MOD_FRH) ||
1545 (hh->id == HW_MOD_FTM) || (hh->id == HW_MOD_FTH)) {
1546 for (id = 0; id < FAXMODCNT; id++)
1547 if (faxmodulation[id] == *val)
1548 break;
1549 if ((FAXMODCNT > id) &&
1550 test_bit(FLG_INITIALIZED, &bch->Flags)) {
1551 pr_debug("%s: isar: new mod\n", ich->is->name);
1552 isar_pump_cmd(ich, hh->id, *val);
1553 ret = 0;
1554 } else {
1555 pr_info("%s: wrong modulation\n",
1556 ich->is->name);
1557 ret = -EINVAL;
1558 }
1559 } else if (hh->id == HW_MOD_LASTDATA)
1560 test_and_set_bit(FLG_DLEETX, &bch->Flags);
1561 else {
1562 pr_info("%s: unknown PH_CONTROL_REQ %x\n",
1563 ich->is->name, hh->id);
1564 ret = -EINVAL;
1565 }
1566 /* fall through */
1567 default:
1568 pr_info("%s: %s unknown prim(%x,%x)\n",
1569 ich->is->name, __func__, hh->prim, hh->id);
1570 ret = -EINVAL;
1571 }
1572 if (!ret)
1573 dev_kfree_skb(skb);
1574 return ret;
1575 }
1576
1577 static int
channel_bctrl(struct bchannel * bch,struct mISDN_ctrl_req * cq)1578 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
1579 {
1580 return mISDN_ctrl_bchannel(bch, cq);
1581 }
1582
1583 static int
isar_bctrl(struct mISDNchannel * ch,u32 cmd,void * arg)1584 isar_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1585 {
1586 struct bchannel *bch = container_of(ch, struct bchannel, ch);
1587 struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
1588 int ret = -EINVAL;
1589 u_long flags;
1590
1591 pr_debug("%s: %s cmd:%x %p\n", ich->is->name, __func__, cmd, arg);
1592 switch (cmd) {
1593 case CLOSE_CHANNEL:
1594 test_and_clear_bit(FLG_OPEN, &bch->Flags);
1595 cancel_work_sync(&bch->workq);
1596 spin_lock_irqsave(ich->is->hwlock, flags);
1597 mISDN_clear_bchannel(bch);
1598 modeisar(ich, ISDN_P_NONE);
1599 spin_unlock_irqrestore(ich->is->hwlock, flags);
1600 ch->protocol = ISDN_P_NONE;
1601 ch->peer = NULL;
1602 module_put(ich->is->owner);
1603 ret = 0;
1604 break;
1605 case CONTROL_CHANNEL:
1606 ret = channel_bctrl(bch, arg);
1607 break;
1608 default:
1609 pr_info("%s: %s unknown prim(%x)\n",
1610 ich->is->name, __func__, cmd);
1611 }
1612 return ret;
1613 }
1614
1615 static void
free_isar(struct isar_hw * isar)1616 free_isar(struct isar_hw *isar)
1617 {
1618 modeisar(&isar->ch[0], ISDN_P_NONE);
1619 modeisar(&isar->ch[1], ISDN_P_NONE);
1620 del_timer(&isar->ch[0].ftimer);
1621 del_timer(&isar->ch[1].ftimer);
1622 test_and_clear_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
1623 test_and_clear_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
1624 }
1625
1626 static int
init_isar(struct isar_hw * isar)1627 init_isar(struct isar_hw *isar)
1628 {
1629 int cnt = 3;
1630
1631 while (cnt--) {
1632 isar->version = ISARVersion(isar);
1633 if (isar->ch[0].bch.debug & DEBUG_HW)
1634 pr_notice("%s: Testing version %d (%d time)\n",
1635 isar->name, isar->version, 3 - cnt);
1636 if (isar->version == 1)
1637 break;
1638 isar->ctrl(isar->hw, HW_RESET_REQ, 0);
1639 }
1640 if (isar->version != 1)
1641 return -EINVAL;
1642 timer_setup(&isar->ch[0].ftimer, ftimer_handler, 0);
1643 test_and_set_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
1644 timer_setup(&isar->ch[1].ftimer, ftimer_handler, 0);
1645 test_and_set_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
1646 return 0;
1647 }
1648
1649 static int
isar_open(struct isar_hw * isar,struct channel_req * rq)1650 isar_open(struct isar_hw *isar, struct channel_req *rq)
1651 {
1652 struct bchannel *bch;
1653
1654 if (rq->adr.channel == 0 || rq->adr.channel > 2)
1655 return -EINVAL;
1656 if (rq->protocol == ISDN_P_NONE)
1657 return -EINVAL;
1658 bch = &isar->ch[rq->adr.channel - 1].bch;
1659 if (test_and_set_bit(FLG_OPEN, &bch->Flags))
1660 return -EBUSY; /* b-channel can be only open once */
1661 bch->ch.protocol = rq->protocol;
1662 rq->ch = &bch->ch;
1663 return 0;
1664 }
1665
1666 u32
mISDNisar_init(struct isar_hw * isar,void * hw)1667 mISDNisar_init(struct isar_hw *isar, void *hw)
1668 {
1669 u32 ret, i;
1670
1671 isar->hw = hw;
1672 for (i = 0; i < 2; i++) {
1673 isar->ch[i].bch.nr = i + 1;
1674 mISDN_initbchannel(&isar->ch[i].bch, MAX_DATA_MEM, 32);
1675 isar->ch[i].bch.ch.nr = i + 1;
1676 isar->ch[i].bch.ch.send = &isar_l2l1;
1677 isar->ch[i].bch.ch.ctrl = isar_bctrl;
1678 isar->ch[i].bch.hw = hw;
1679 isar->ch[i].is = isar;
1680 }
1681
1682 isar->init = &init_isar;
1683 isar->release = &free_isar;
1684 isar->firmware = &load_firmware;
1685 isar->open = &isar_open;
1686
1687 ret = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1688 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)) |
1689 (1 << (ISDN_P_B_L2DTMF & ISDN_P_B_MASK)) |
1690 (1 << (ISDN_P_B_MODEM_ASYNC & ISDN_P_B_MASK)) |
1691 (1 << (ISDN_P_B_T30_FAX & ISDN_P_B_MASK));
1692
1693 return ret;
1694 }
1695 EXPORT_SYMBOL(mISDNisar_init);
1696
isar_mod_init(void)1697 static int __init isar_mod_init(void)
1698 {
1699 pr_notice("mISDN: ISAR driver Rev. %s\n", ISAR_REV);
1700 return 0;
1701 }
1702
isar_mod_cleanup(void)1703 static void __exit isar_mod_cleanup(void)
1704 {
1705 pr_notice("mISDN: ISAR module unloaded\n");
1706 }
1707 module_init(isar_mod_init);
1708 module_exit(isar_mod_cleanup);
1709