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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / isdn / hardware / avm / b1dma.c
blob9538a9e5e1a83fb5cb93d42f35c5ef588afa8b92
1 /* $Id: b1dma.c,v 1.1.2.3 2004/02/10 01:07:12 keil Exp $
2 *
3 * Common module for AVM B1 cards that support dma with AMCC
4 *
5 * Copyright 2000 by Carsten Paeth <calle@calle.de>
6 *
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
9 *
10 */
11
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/proc_fs.h>
15 #include <linux/seq_file.h>
16 #include <linux/skbuff.h>
17 #include <linux/delay.h>
18 #include <linux/mm.h>
19 #include <linux/interrupt.h>
20 #include <linux/ioport.h>
21 #include <linux/capi.h>
22 #include <linux/kernelcapi.h>
23 #include <linux/gfp.h>
24 #include <asm/io.h>
25 #include <linux/init.h>
26 #include <linux/uaccess.h>
27 #include <linux/netdevice.h>
28 #include <linux/isdn/capilli.h>
29 #include "avmcard.h"
30 #include <linux/isdn/capicmd.h>
31 #include <linux/isdn/capiutil.h>
32
33 static char *revision = "$Revision: 1.1.2.3 $";
34
35 #undef AVM_B1DMA_DEBUG
36
37 /* ------------------------------------------------------------- */
38
39 MODULE_DESCRIPTION("CAPI4Linux: DMA support for active AVM cards");
40 MODULE_AUTHOR("Carsten Paeth");
41 MODULE_LICENSE("GPL");
42
43 static bool suppress_pollack = 0;
44 module_param(suppress_pollack, bool, 0);
45
46 /* ------------------------------------------------------------- */
47
48 static void b1dma_dispatch_tx(avmcard *card);
49
50 /* ------------------------------------------------------------- */
51
52 /* S5933 */
53
54 #define AMCC_RXPTR 0x24
55 #define AMCC_RXLEN 0x28
56 #define AMCC_TXPTR 0x2c
57 #define AMCC_TXLEN 0x30
58
59 #define AMCC_INTCSR 0x38
60 # define EN_READ_TC_INT 0x00008000L
61 # define EN_WRITE_TC_INT 0x00004000L
62 # define EN_TX_TC_INT EN_READ_TC_INT
63 # define EN_RX_TC_INT EN_WRITE_TC_INT
64 # define AVM_FLAG 0x30000000L
65
66 # define ANY_S5933_INT 0x00800000L
67 # define READ_TC_INT 0x00080000L
68 # define WRITE_TC_INT 0x00040000L
69 # define TX_TC_INT READ_TC_INT
70 # define RX_TC_INT WRITE_TC_INT
71 # define MASTER_ABORT_INT 0x00100000L
72 # define TARGET_ABORT_INT 0x00200000L
73 # define BUS_MASTER_INT 0x00200000L
74 # define ALL_INT 0x000C0000L
75
76 #define AMCC_MCSR 0x3c
77 # define A2P_HI_PRIORITY 0x00000100L
78 # define EN_A2P_TRANSFERS 0x00000400L
79 # define P2A_HI_PRIORITY 0x00001000L
80 # define EN_P2A_TRANSFERS 0x00004000L
81 # define RESET_A2P_FLAGS 0x04000000L
82 # define RESET_P2A_FLAGS 0x02000000L
83
84 /* ------------------------------------------------------------- */
85
86 static inline void b1dma_writel(avmcard *card, u32 value, int off)
87 {
88 writel(value, card->mbase + off);
89 }
90
91 static inline u32 b1dma_readl(avmcard *card, int off)
92 {
93 return readl(card->mbase + off);
94 }
95
96 /* ------------------------------------------------------------- */
97
98 static inline int b1dma_tx_empty(unsigned int port)
99 {
100 return inb(port + 0x03) & 0x1;
101 }
102
103 static inline int b1dma_rx_full(unsigned int port)
104 {
105 return inb(port + 0x02) & 0x1;
106 }
107
108 static int b1dma_tolink(avmcard *card, void *buf, unsigned int len)
109 {
110 unsigned long stop = jiffies + 1 * HZ; /* maximum wait time 1 sec */
111 unsigned char *s = (unsigned char *)buf;
112 while (len--) {
113 while (!b1dma_tx_empty(card->port)
114 && time_before(jiffies, stop));
115 if (!b1dma_tx_empty(card->port))
116 return -1;
117 t1outp(card->port, 0x01, *s++);
118 }
119 return 0;
120 }
121
122 static int b1dma_fromlink(avmcard *card, void *buf, unsigned int len)
123 {
124 unsigned long stop = jiffies + 1 * HZ; /* maximum wait time 1 sec */
125 unsigned char *s = (unsigned char *)buf;
126 while (len--) {
127 while (!b1dma_rx_full(card->port)
128 && time_before(jiffies, stop));
129 if (!b1dma_rx_full(card->port))
130 return -1;
131 *s++ = t1inp(card->port, 0x00);
132 }
133 return 0;
134 }
135
136 static int WriteReg(avmcard *card, u32 reg, u8 val)
137 {
138 u8 cmd = 0x00;
139 if (b1dma_tolink(card, &cmd, 1) == 0
140 && b1dma_tolink(card, &reg, 4) == 0) {
141 u32 tmp = val;
142 return b1dma_tolink(card, &tmp, 4);
143 }
144 return -1;
145 }
146
147 static u8 ReadReg(avmcard *card, u32 reg)
148 {
149 u8 cmd = 0x01;
150 if (b1dma_tolink(card, &cmd, 1) == 0
151 && b1dma_tolink(card, &reg, 4) == 0) {
152 u32 tmp;
153 if (b1dma_fromlink(card, &tmp, 4) == 0)
154 return (u8)tmp;
155 }
156 return 0xff;
157 }
158
159 /* ------------------------------------------------------------- */
160
161 static inline void _put_byte(void **pp, u8 val)
162 {
163 u8 *s = *pp;
164 *s++ = val;
165 *pp = s;
166 }
167
168 static inline void _put_word(void **pp, u32 val)
169 {
170 u8 *s = *pp;
171 *s++ = val & 0xff;
172 *s++ = (val >> 8) & 0xff;
173 *s++ = (val >> 16) & 0xff;
174 *s++ = (val >> 24) & 0xff;
175 *pp = s;
176 }
177
178 static inline void _put_slice(void **pp, unsigned char *dp, unsigned int len)
179 {
180 unsigned i = len;
181 _put_word(pp, i);
182 while (i-- > 0)
183 _put_byte(pp, *dp++);
184 }
185
186 static inline u8 _get_byte(void **pp)
187 {
188 u8 *s = *pp;
189 u8 val;
190 val = *s++;
191 *pp = s;
192 return val;
193 }
194
195 static inline u32 _get_word(void **pp)
196 {
197 u8 *s = *pp;
198 u32 val;
199 val = *s++;
200 val |= (*s++ << 8);
201 val |= (*s++ << 16);
202 val |= (*s++ << 24);
203 *pp = s;
204 return val;
205 }
206
207 static inline u32 _get_slice(void **pp, unsigned char *dp)
208 {
209 unsigned int len, i;
210
211 len = i = _get_word(pp);
212 while (i-- > 0) *dp++ = _get_byte(pp);
213 return len;
214 }
215
216 /* ------------------------------------------------------------- */
217
218 void b1dma_reset(avmcard *card)
219 {
220 card->csr = 0x0;
221 b1dma_writel(card, card->csr, AMCC_INTCSR);
222 b1dma_writel(card, 0, AMCC_MCSR);
223 b1dma_writel(card, 0, AMCC_RXLEN);
224 b1dma_writel(card, 0, AMCC_TXLEN);
225
226 t1outp(card->port, 0x10, 0x00);
227 t1outp(card->port, 0x07, 0x00);
228
229 b1dma_writel(card, 0, AMCC_MCSR);
230 mdelay(10);
231 b1dma_writel(card, 0x0f000000, AMCC_MCSR); /* reset all */
232 mdelay(10);
233 b1dma_writel(card, 0, AMCC_MCSR);
234 if (card->cardtype == avm_t1pci)
235 mdelay(42);
236 else
237 mdelay(10);
238 }
239
240 /* ------------------------------------------------------------- */
241
242 static int b1dma_detect(avmcard *card)
243 {
244 b1dma_writel(card, 0, AMCC_MCSR);
245 mdelay(10);
246 b1dma_writel(card, 0x0f000000, AMCC_MCSR); /* reset all */
247 mdelay(10);
248 b1dma_writel(card, 0, AMCC_MCSR);
249 mdelay(42);
250
251 b1dma_writel(card, 0, AMCC_RXLEN);
252 b1dma_writel(card, 0, AMCC_TXLEN);
253 card->csr = 0x0;
254 b1dma_writel(card, card->csr, AMCC_INTCSR);
255
256 if (b1dma_readl(card, AMCC_MCSR) != 0x000000E6)
257 return 1;
258
259 b1dma_writel(card, 0xffffffff, AMCC_RXPTR);
260 b1dma_writel(card, 0xffffffff, AMCC_TXPTR);
261 if (b1dma_readl(card, AMCC_RXPTR) != 0xfffffffc
262 || b1dma_readl(card, AMCC_TXPTR) != 0xfffffffc)
263 return 2;
264
265 b1dma_writel(card, 0x0, AMCC_RXPTR);
266 b1dma_writel(card, 0x0, AMCC_TXPTR);
267 if (b1dma_readl(card, AMCC_RXPTR) != 0x0
268 || b1dma_readl(card, AMCC_TXPTR) != 0x0)
269 return 3;
270
271 t1outp(card->port, 0x10, 0x00);
272 t1outp(card->port, 0x07, 0x00);
273
274 t1outp(card->port, 0x02, 0x02);
275 t1outp(card->port, 0x03, 0x02);
276
277 if ((t1inp(card->port, 0x02) & 0xFE) != 0x02
278 || t1inp(card->port, 0x3) != 0x03)
279 return 4;
280
281 t1outp(card->port, 0x02, 0x00);
282 t1outp(card->port, 0x03, 0x00);
283
284 if ((t1inp(card->port, 0x02) & 0xFE) != 0x00
285 || t1inp(card->port, 0x3) != 0x01)
286 return 5;
287
288 return 0;
289 }
290
291 int t1pci_detect(avmcard *card)
292 {
293 int ret;
294
295 if ((ret = b1dma_detect(card)) != 0)
296 return ret;
297
298 /* Transputer test */
299
300 if (WriteReg(card, 0x80001000, 0x11) != 0
301 || WriteReg(card, 0x80101000, 0x22) != 0
302 || WriteReg(card, 0x80201000, 0x33) != 0
303 || WriteReg(card, 0x80301000, 0x44) != 0)
304 return 6;
305
306 if (ReadReg(card, 0x80001000) != 0x11
307 || ReadReg(card, 0x80101000) != 0x22
308 || ReadReg(card, 0x80201000) != 0x33
309 || ReadReg(card, 0x80301000) != 0x44)
310 return 7;
311
312 if (WriteReg(card, 0x80001000, 0x55) != 0
313 || WriteReg(card, 0x80101000, 0x66) != 0
314 || WriteReg(card, 0x80201000, 0x77) != 0
315 || WriteReg(card, 0x80301000, 0x88) != 0)
316 return 8;
317
318 if (ReadReg(card, 0x80001000) != 0x55
319 || ReadReg(card, 0x80101000) != 0x66
320 || ReadReg(card, 0x80201000) != 0x77
321 || ReadReg(card, 0x80301000) != 0x88)
322 return 9;
323
324 return 0;
325 }
326
327 int b1pciv4_detect(avmcard *card)
328 {
329 int ret, i;
330
331 if ((ret = b1dma_detect(card)) != 0)
332 return ret;
333
334 for (i = 0; i < 5; i++) {
335 if (WriteReg(card, 0x80A00000, 0x21) != 0)
336 return 6;
337 if ((ReadReg(card, 0x80A00000) & 0x01) != 0x01)
338 return 7;
339 }
340 for (i = 0; i < 5; i++) {
341 if (WriteReg(card, 0x80A00000, 0x20) != 0)
342 return 8;
343 if ((ReadReg(card, 0x80A00000) & 0x01) != 0x00)
344 return 9;
345 }
346
347 return 0;
348 }
349
350 static void b1dma_queue_tx(avmcard *card, struct sk_buff *skb)
351 {
352 unsigned long flags;
353
354 spin_lock_irqsave(&card->lock, flags);
355
356 skb_queue_tail(&card->dma->send_queue, skb);
357
358 if (!(card->csr & EN_TX_TC_INT)) {
359 b1dma_dispatch_tx(card);
360 b1dma_writel(card, card->csr, AMCC_INTCSR);
361 }
362
363 spin_unlock_irqrestore(&card->lock, flags);
364 }
365
366 /* ------------------------------------------------------------- */
367
368 static void b1dma_dispatch_tx(avmcard *card)
369 {
370 avmcard_dmainfo *dma = card->dma;
371 struct sk_buff *skb;
372 u8 cmd, subcmd;
373 u16 len;
374 u32 txlen;
375 void *p;
376
377 skb = skb_dequeue(&dma->send_queue);
378
379 len = CAPIMSG_LEN(skb->data);
380
381 if (len) {
382 cmd = CAPIMSG_COMMAND(skb->data);
383 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
384
385 p = dma->sendbuf.dmabuf;
386
387 if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
388 u16 dlen = CAPIMSG_DATALEN(skb->data);
389 _put_byte(&p, SEND_DATA_B3_REQ);
390 _put_slice(&p, skb->data, len);
391 _put_slice(&p, skb->data + len, dlen);
392 } else {
393 _put_byte(&p, SEND_MESSAGE);
394 _put_slice(&p, skb->data, len);
395 }
396 txlen = (u8 *)p - (u8 *)dma->sendbuf.dmabuf;
397 #ifdef AVM_B1DMA_DEBUG
398 printk(KERN_DEBUG "tx: put msg len=%d\n", txlen);
399 #endif
400 } else {
401 txlen = skb->len - 2;
402 #ifdef AVM_B1DMA_POLLDEBUG
403 if (skb->data[2] == SEND_POLLACK)
404 printk(KERN_INFO "%s: send ack\n", card->name);
405 #endif
406 #ifdef AVM_B1DMA_DEBUG
407 printk(KERN_DEBUG "tx: put 0x%x len=%d\n",
408 skb->data[2], txlen);
409 #endif
410 skb_copy_from_linear_data_offset(skb, 2, dma->sendbuf.dmabuf,
411 skb->len - 2);
412 }
413 txlen = (txlen + 3) & ~3;
414
415 b1dma_writel(card, dma->sendbuf.dmaaddr, AMCC_TXPTR);
416 b1dma_writel(card, txlen, AMCC_TXLEN);
417
418 card->csr |= EN_TX_TC_INT;
419
420 dev_kfree_skb_any(skb);
421 }
422
423 /* ------------------------------------------------------------- */
424
425 static void queue_pollack(avmcard *card)
426 {
427 struct sk_buff *skb;
428 void *p;
429
430 skb = alloc_skb(3, GFP_ATOMIC);
431 if (!skb) {
432 printk(KERN_CRIT "%s: no memory, lost poll ack\n",
433 card->name);
434 return;
435 }
436 p = skb->data;
437 _put_byte(&p, 0);
438 _put_byte(&p, 0);
439 _put_byte(&p, SEND_POLLACK);
440 skb_put(skb, (u8 *)p - (u8 *)skb->data);
441
442 b1dma_queue_tx(card, skb);
443 }
444
445 /* ------------------------------------------------------------- */
446
447 static void b1dma_handle_rx(avmcard *card)
448 {
449 avmctrl_info *cinfo = &card->ctrlinfo[0];
450 avmcard_dmainfo *dma = card->dma;
451 struct capi_ctr *ctrl = &cinfo->capi_ctrl;
452 struct sk_buff *skb;
453 void *p = dma->recvbuf.dmabuf + 4;
454 u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize;
455 u8 b1cmd = _get_byte(&p);
456
457 #ifdef AVM_B1DMA_DEBUG
458 printk(KERN_DEBUG "rx: 0x%x %lu\n", b1cmd, (unsigned long)dma->recvlen);
459 #endif
460
461 switch (b1cmd) {
462 case RECEIVE_DATA_B3_IND:
463
464 ApplId = (unsigned) _get_word(&p);
465 MsgLen = _get_slice(&p, card->msgbuf);
466 DataB3Len = _get_slice(&p, card->databuf);
467
468 if (MsgLen < 30) { /* not CAPI 64Bit */
469 memset(card->msgbuf + MsgLen, 0, 30 - MsgLen);
470 MsgLen = 30;
471 CAPIMSG_SETLEN(card->msgbuf, 30);
472 }
473 if (!(skb = alloc_skb(DataB3Len + MsgLen, GFP_ATOMIC))) {
474 printk(KERN_ERR "%s: incoming packet dropped\n",
475 card->name);
476 } else {
477 skb_put_data(skb, card->msgbuf, MsgLen);
478 skb_put_data(skb, card->databuf, DataB3Len);
479 capi_ctr_handle_message(ctrl, ApplId, skb);
480 }
481 break;
482
483 case RECEIVE_MESSAGE:
484
485 ApplId = (unsigned) _get_word(&p);
486 MsgLen = _get_slice(&p, card->msgbuf);
487 if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
488 printk(KERN_ERR "%s: incoming packet dropped\n",
489 card->name);
490 } else {
491 skb_put_data(skb, card->msgbuf, MsgLen);
492 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_CONF) {
493 spin_lock(&card->lock);
494 capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
495 CAPIMSG_NCCI(skb->data),
496 CAPIMSG_MSGID(skb->data));
497 spin_unlock(&card->lock);
498 }
499 capi_ctr_handle_message(ctrl, ApplId, skb);
500 }
501 break;
502
503 case RECEIVE_NEW_NCCI:
504
505 ApplId = _get_word(&p);
506 NCCI = _get_word(&p);
507 WindowSize = _get_word(&p);
508 spin_lock(&card->lock);
509 capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
510 spin_unlock(&card->lock);
511 break;
512
513 case RECEIVE_FREE_NCCI:
514
515 ApplId = _get_word(&p);
516 NCCI = _get_word(&p);
517
518 if (NCCI != 0xffffffff) {
519 spin_lock(&card->lock);
520 capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
521 spin_unlock(&card->lock);
522 }
523 break;
524
525 case RECEIVE_START:
526 #ifdef AVM_B1DMA_POLLDEBUG
527 printk(KERN_INFO "%s: receive poll\n", card->name);
528 #endif
529 if (!suppress_pollack)
530 queue_pollack(card);
531 capi_ctr_resume_output(ctrl);
532 break;
533
534 case RECEIVE_STOP:
535 capi_ctr_suspend_output(ctrl);
536 break;
537
538 case RECEIVE_INIT:
539
540 cinfo->versionlen = _get_slice(&p, cinfo->versionbuf);
541 b1_parse_version(cinfo);
542 printk(KERN_INFO "%s: %s-card (%s) now active\n",
543 card->name,
544 cinfo->version[VER_CARDTYPE],
545 cinfo->version[VER_DRIVER]);
546 capi_ctr_ready(ctrl);
547 break;
548
549 case RECEIVE_TASK_READY:
550 ApplId = (unsigned) _get_word(&p);
551 MsgLen = _get_slice(&p, card->msgbuf);
552 card->msgbuf[MsgLen] = 0;
553 while (MsgLen > 0
554 && (card->msgbuf[MsgLen - 1] == '\n'
555 || card->msgbuf[MsgLen - 1] == '\r')) {
556 card->msgbuf[MsgLen - 1] = 0;
557 MsgLen--;
558 }
559 printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
560 card->name, ApplId, card->msgbuf);
561 break;
562
563 case RECEIVE_DEBUGMSG:
564 MsgLen = _get_slice(&p, card->msgbuf);
565 card->msgbuf[MsgLen] = 0;
566 while (MsgLen > 0
567 && (card->msgbuf[MsgLen - 1] == '\n'
568 || card->msgbuf[MsgLen - 1] == '\r')) {
569 card->msgbuf[MsgLen - 1] = 0;
570 MsgLen--;
571 }
572 printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
573 break;
574
575 default:
576 printk(KERN_ERR "%s: b1dma_interrupt: 0x%x ???\n",
577 card->name, b1cmd);
578 return;
579 }
580 }
581
582 /* ------------------------------------------------------------- */
583
584 static void b1dma_handle_interrupt(avmcard *card)
585 {
586 u32 status;
587 u32 newcsr;
588
589 spin_lock(&card->lock);
590
591 status = b1dma_readl(card, AMCC_INTCSR);
592 if ((status & ANY_S5933_INT) == 0) {
593 spin_unlock(&card->lock);
594 return;
595 }
596
597 newcsr = card->csr | (status & ALL_INT);
598 if (status & TX_TC_INT) newcsr &= ~EN_TX_TC_INT;
599 if (status & RX_TC_INT) newcsr &= ~EN_RX_TC_INT;
600 b1dma_writel(card, newcsr, AMCC_INTCSR);
601
602 if ((status & RX_TC_INT) != 0) {
603 struct avmcard_dmainfo *dma = card->dma;
604 u32 rxlen;
605 if (card->dma->recvlen == 0) {
606 rxlen = b1dma_readl(card, AMCC_RXLEN);
607 if (rxlen == 0) {
608 dma->recvlen = *((u32 *)dma->recvbuf.dmabuf);
609 rxlen = (dma->recvlen + 3) & ~3;
610 b1dma_writel(card, dma->recvbuf.dmaaddr + 4, AMCC_RXPTR);
611 b1dma_writel(card, rxlen, AMCC_RXLEN);
612 #ifdef AVM_B1DMA_DEBUG
613 } else {
614 printk(KERN_ERR "%s: rx not complete (%d).\n",
615 card->name, rxlen);
616 #endif
617 }
618 } else {
619 spin_unlock(&card->lock);
620 b1dma_handle_rx(card);
621 dma->recvlen = 0;
622 spin_lock(&card->lock);
623 b1dma_writel(card, dma->recvbuf.dmaaddr, AMCC_RXPTR);
624 b1dma_writel(card, 4, AMCC_RXLEN);
625 }
626 }
627
628 if ((status & TX_TC_INT) != 0) {
629 if (skb_queue_empty(&card->dma->send_queue))
630 card->csr &= ~EN_TX_TC_INT;
631 else
632 b1dma_dispatch_tx(card);
633 }
634 b1dma_writel(card, card->csr, AMCC_INTCSR);
635
636 spin_unlock(&card->lock);
637 }
638
639 irqreturn_t b1dma_interrupt(int interrupt, void *devptr)
640 {
641 avmcard *card = devptr;
642
643 b1dma_handle_interrupt(card);
644 return IRQ_HANDLED;
645 }
646
647 /* ------------------------------------------------------------- */
648
649 static int b1dma_loaded(avmcard *card)
650 {
651 unsigned long stop;
652 unsigned char ans;
653 unsigned long tout = 2;
654 unsigned int base = card->port;
655
656 for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) {
657 if (b1_tx_empty(base))
658 break;
659 }
660 if (!b1_tx_empty(base)) {
661 printk(KERN_ERR "%s: b1dma_loaded: tx err, corrupted t4 file ?\n",
662 card->name);
663 return 0;
664 }
665 b1_put_byte(base, SEND_POLLACK);
666 for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) {
667 if (b1_rx_full(base)) {
668 if ((ans = b1_get_byte(base)) == RECEIVE_POLLDWORD) {
669 return 1;
670 }
671 printk(KERN_ERR "%s: b1dma_loaded: got 0x%x, firmware not running in dword mode\n", card->name, ans);
672 return 0;
673 }
674 }
675 printk(KERN_ERR "%s: b1dma_loaded: firmware not running\n", card->name);
676 return 0;
677 }
678
679 /* ------------------------------------------------------------- */
680
681 static void b1dma_send_init(avmcard *card)
682 {
683 struct sk_buff *skb;
684 void *p;
685
686 skb = alloc_skb(15, GFP_ATOMIC);
687 if (!skb) {
688 printk(KERN_CRIT "%s: no memory, lost register appl.\n",
689 card->name);
690 return;
691 }
692 p = skb->data;
693 _put_byte(&p, 0);
694 _put_byte(&p, 0);
695 _put_byte(&p, SEND_INIT);
696 _put_word(&p, CAPI_MAXAPPL);
697 _put_word(&p, AVM_NCCI_PER_CHANNEL * 30);
698 _put_word(&p, card->cardnr - 1);
699 skb_put(skb, (u8 *)p - (u8 *)skb->data);
700
701 b1dma_queue_tx(card, skb);
702 }
703
704 int b1dma_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
705 {
706 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
707 avmcard *card = cinfo->card;
708 int retval;
709
710 b1dma_reset(card);
711
712 if ((retval = b1_load_t4file(card, &data->firmware))) {
713 b1dma_reset(card);
714 printk(KERN_ERR "%s: failed to load t4file!!\n",
715 card->name);
716 return retval;
717 }
718
719 if (data->configuration.len > 0 && data->configuration.data) {
720 if ((retval = b1_load_config(card, &data->configuration))) {
721 b1dma_reset(card);
722 printk(KERN_ERR "%s: failed to load config!!\n",
723 card->name);
724 return retval;
725 }
726 }
727
728 if (!b1dma_loaded(card)) {
729 b1dma_reset(card);
730 printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
731 return -EIO;
732 }
733
734 card->csr = AVM_FLAG;
735 b1dma_writel(card, card->csr, AMCC_INTCSR);
736 b1dma_writel(card, EN_A2P_TRANSFERS | EN_P2A_TRANSFERS | A2P_HI_PRIORITY |
737 P2A_HI_PRIORITY | RESET_A2P_FLAGS | RESET_P2A_FLAGS,
738 AMCC_MCSR);
739 t1outp(card->port, 0x07, 0x30);
740 t1outp(card->port, 0x10, 0xF0);
741
742 card->dma->recvlen = 0;
743 b1dma_writel(card, card->dma->recvbuf.dmaaddr, AMCC_RXPTR);
744 b1dma_writel(card, 4, AMCC_RXLEN);
745 card->csr |= EN_RX_TC_INT;
746 b1dma_writel(card, card->csr, AMCC_INTCSR);
747
748 b1dma_send_init(card);
749
750 return 0;
751 }
752
753 void b1dma_reset_ctr(struct capi_ctr *ctrl)
754 {
755 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
756 avmcard *card = cinfo->card;
757 unsigned long flags;
758
759 spin_lock_irqsave(&card->lock, flags);
760 b1dma_reset(card);
761
762 memset(cinfo->version, 0, sizeof(cinfo->version));
763 capilib_release(&cinfo->ncci_head);
764 spin_unlock_irqrestore(&card->lock, flags);
765 capi_ctr_down(ctrl);
766 }
767
768 /* ------------------------------------------------------------- */
769
770 void b1dma_register_appl(struct capi_ctr *ctrl,
771 u16 appl,
772 capi_register_params *rp)
773 {
774 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
775 avmcard *card = cinfo->card;
776 struct sk_buff *skb;
777 int want = rp->level3cnt;
778 int nconn;
779 void *p;
780
781 if (want > 0) nconn = want;
782 else nconn = ctrl->profile.nbchannel * -want;
783 if (nconn == 0) nconn = ctrl->profile.nbchannel;
784
785 skb = alloc_skb(23, GFP_ATOMIC);
786 if (!skb) {
787 printk(KERN_CRIT "%s: no memory, lost register appl.\n",
788 card->name);
789 return;
790 }
791 p = skb->data;
792 _put_byte(&p, 0);
793 _put_byte(&p, 0);
794 _put_byte(&p, SEND_REGISTER);
795 _put_word(&p, appl);
796 _put_word(&p, 1024 * (nconn + 1));
797 _put_word(&p, nconn);
798 _put_word(&p, rp->datablkcnt);
799 _put_word(&p, rp->datablklen);
800 skb_put(skb, (u8 *)p - (u8 *)skb->data);
801
802 b1dma_queue_tx(card, skb);
803 }
804
805 /* ------------------------------------------------------------- */
806
807 void b1dma_release_appl(struct capi_ctr *ctrl, u16 appl)
808 {
809 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
810 avmcard *card = cinfo->card;
811 struct sk_buff *skb;
812 void *p;
813 unsigned long flags;
814
815 spin_lock_irqsave(&card->lock, flags);
816 capilib_release_appl(&cinfo->ncci_head, appl);
817 spin_unlock_irqrestore(&card->lock, flags);
818
819 skb = alloc_skb(7, GFP_ATOMIC);
820 if (!skb) {
821 printk(KERN_CRIT "%s: no memory, lost release appl.\n",
822 card->name);
823 return;
824 }
825 p = skb->data;
826 _put_byte(&p, 0);
827 _put_byte(&p, 0);
828 _put_byte(&p, SEND_RELEASE);
829 _put_word(&p, appl);
830
831 skb_put(skb, (u8 *)p - (u8 *)skb->data);
832
833 b1dma_queue_tx(card, skb);
834 }
835
836 /* ------------------------------------------------------------- */
837
838 u16 b1dma_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
839 {
840 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
841 avmcard *card = cinfo->card;
842 u16 retval = CAPI_NOERROR;
843
844 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) {
845 unsigned long flags;
846 spin_lock_irqsave(&card->lock, flags);
847 retval = capilib_data_b3_req(&cinfo->ncci_head,
848 CAPIMSG_APPID(skb->data),
849 CAPIMSG_NCCI(skb->data),
850 CAPIMSG_MSGID(skb->data));
851 spin_unlock_irqrestore(&card->lock, flags);
852 }
853 if (retval == CAPI_NOERROR)
854 b1dma_queue_tx(card, skb);
855
856 return retval;
857 }
858
859 /* ------------------------------------------------------------- */
860
861 static int b1dmactl_proc_show(struct seq_file *m, void *v)
862 {
863 struct capi_ctr *ctrl = m->private;
864 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
865 avmcard *card = cinfo->card;
866 u8 flag;
867 char *s;
868 u32 txoff, txlen, rxoff, rxlen, csr;
869 unsigned long flags;
870
871 seq_printf(m, "%-16s %s\n", "name", card->name);
872 seq_printf(m, "%-16s 0x%x\n", "io", card->port);
873 seq_printf(m, "%-16s %d\n", "irq", card->irq);
874 seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase);
875 switch (card->cardtype) {
876 case avm_b1isa: s = "B1 ISA"; break;
877 case avm_b1pci: s = "B1 PCI"; break;
878 case avm_b1pcmcia: s = "B1 PCMCIA"; break;
879 case avm_m1: s = "M1"; break;
880 case avm_m2: s = "M2"; break;
881 case avm_t1isa: s = "T1 ISA (HEMA)"; break;
882 case avm_t1pci: s = "T1 PCI"; break;
883 case avm_c4: s = "C4"; break;
884 case avm_c2: s = "C2"; break;
885 default: s = "???"; break;
886 }
887 seq_printf(m, "%-16s %s\n", "type", s);
888 if ((s = cinfo->version[VER_DRIVER]) != NULL)
889 seq_printf(m, "%-16s %s\n", "ver_driver", s);
890 if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
891 seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
892 if ((s = cinfo->version[VER_SERIAL]) != NULL)
893 seq_printf(m, "%-16s %s\n", "ver_serial", s);
894
895 if (card->cardtype != avm_m1) {
896 flag = ((u8 *)(ctrl->profile.manu))[3];
897 if (flag)
898 seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
899 "protocol",
900 (flag & 0x01) ? " DSS1" : "",
901 (flag & 0x02) ? " CT1" : "",
902 (flag & 0x04) ? " VN3" : "",
903 (flag & 0x08) ? " NI1" : "",
904 (flag & 0x10) ? " AUSTEL" : "",
905 (flag & 0x20) ? " ESS" : "",
906 (flag & 0x40) ? " 1TR6" : ""
907 );
908 }
909 if (card->cardtype != avm_m1) {
910 flag = ((u8 *)(ctrl->profile.manu))[5];
911 if (flag)
912 seq_printf(m, "%-16s%s%s%s%s\n",
913 "linetype",
914 (flag & 0x01) ? " point to point" : "",
915 (flag & 0x02) ? " point to multipoint" : "",
916 (flag & 0x08) ? " leased line without D-channel" : "",
917 (flag & 0x04) ? " leased line with D-channel" : ""
918 );
919 }
920 seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
921
922
923 spin_lock_irqsave(&card->lock, flags);
924
925 txoff = (dma_addr_t)b1dma_readl(card, AMCC_TXPTR)-card->dma->sendbuf.dmaaddr;
926 txlen = b1dma_readl(card, AMCC_TXLEN);
927
928 rxoff = (dma_addr_t)b1dma_readl(card, AMCC_RXPTR)-card->dma->recvbuf.dmaaddr;
929 rxlen = b1dma_readl(card, AMCC_RXLEN);
930
931 csr = b1dma_readl(card, AMCC_INTCSR);
932
933 spin_unlock_irqrestore(&card->lock, flags);
934
935 seq_printf(m, "%-16s 0x%lx\n", "csr (cached)", (unsigned long)card->csr);
936 seq_printf(m, "%-16s 0x%lx\n", "csr", (unsigned long)csr);
937 seq_printf(m, "%-16s %lu\n", "txoff", (unsigned long)txoff);
938 seq_printf(m, "%-16s %lu\n", "txlen", (unsigned long)txlen);
939 seq_printf(m, "%-16s %lu\n", "rxoff", (unsigned long)rxoff);
940 seq_printf(m, "%-16s %lu\n", "rxlen", (unsigned long)rxlen);
941
942 return 0;
943 }
944
945 static int b1dmactl_proc_open(struct inode *inode, struct file *file)
946 {
947 return single_open(file, b1dmactl_proc_show, PDE_DATA(inode));
948 }
949
950 const struct file_operations b1dmactl_proc_fops = {
951 .owner = THIS_MODULE,
952 .open = b1dmactl_proc_open,
953 .read = seq_read,
954 .llseek = seq_lseek,
955 .release = single_release,
956 };
957 EXPORT_SYMBOL(b1dmactl_proc_fops);
958
959 /* ------------------------------------------------------------- */
960
961 EXPORT_SYMBOL(b1dma_reset);
962 EXPORT_SYMBOL(t1pci_detect);
963 EXPORT_SYMBOL(b1pciv4_detect);
964 EXPORT_SYMBOL(b1dma_interrupt);
965
966 EXPORT_SYMBOL(b1dma_load_firmware);
967 EXPORT_SYMBOL(b1dma_reset_ctr);
968 EXPORT_SYMBOL(b1dma_register_appl);
969 EXPORT_SYMBOL(b1dma_release_appl);
970 EXPORT_SYMBOL(b1dma_send_message);
971
972 static int __init b1dma_init(void)
973 {
974 char *p;
975 char rev[32];
976
977 if ((p = strchr(revision, ':')) != NULL && p[1]) {
978 strlcpy(rev, p + 2, sizeof(rev));
979 if ((p = strchr(rev, '$')) != NULL && p > rev)
980 *(p - 1) = 0;
981 } else
982 strcpy(rev, "1.0");
983
984 printk(KERN_INFO "b1dma: revision %s\n", rev);
985
986 return 0;
987 }
988
989 static void __exit b1dma_exit(void)
990 {
991 }
992
993 module_init(b1dma_init);
994 module_exit(b1dma_exit);
CRIS linux kernel tree