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1da177e4 1/* $Id: b1dma.c,v 1.1.2.3 2004/02/10 01:07:12 keil Exp $
475be4d8 2 *
1da177e4 3 * Common module for AVM B1 cards that support dma with AMCC
475be4d8 4 *
1da177e4 5 * Copyright 2000 by Carsten Paeth <calle@calle.de>
475be4d8 6 *
1da177e4
LT		 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
1da177e4
LT		 12#include <linux/module.h>
13#include <linux/kernel.h>
9a58a80a
AD		 14#include <linux/proc_fs.h>
15#include <linux/seq_file.h>
1da177e4
LT		 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>
5a0e3ad6 23#include <linux/gfp.h>
1da177e4
LT		 24#include <asm/io.h>
25#include <linux/init.h>
26#include <asm/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
33static char *revision = "$Revision: 1.1.2.3 $";
34
26fb5c58 35#undef AVM_B1DMA_DEBUG
1da177e4
LT		 36
37/* ------------------------------------------------------------- */
38
39MODULE_DESCRIPTION("CAPI4Linux: DMA support for active AVM cards");
40MODULE_AUTHOR("Carsten Paeth");
41MODULE_LICENSE("GPL");
42
90ab5ee9 43static bool suppress_pollack = 0;
8d3b33f6 44module_param(suppress_pollack, bool, 0);
1da177e4
LT		 45
46/* ------------------------------------------------------------- */
47
48static 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
86static inline void b1dma_writel(avmcard *card, u32 value, int off)
87{
88 writel(value, card->mbase + off);
89}
90
91static inline u32 b1dma_readl(avmcard *card, int off)
92{
93 return readl(card->mbase + off);
94}
95
96/* ------------------------------------------------------------- */
97
98static inline int b1dma_tx_empty(unsigned int port)
99{
100 return inb(port + 0x03) & 0x1;
101}
102
103static inline int b1dma_rx_full(unsigned int port)
104{
105 return inb(port + 0x02) & 0x1;
106}
107
108static 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--) {
475be4d8 113 while (!b1dma_tx_empty(card->port)
1da177e4 114 && time_before(jiffies, stop));
475be4d8 115 if (!b1dma_tx_empty(card->port))
1da177e4 116 return -1;
475be4d8 117 t1outp(card->port, 0x01, *s++);
1da177e4
LT		 118 }
119 return 0;
120}
121
122static 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--) {
475be4d8 127 while (!b1dma_rx_full(card->port)
1da177e4 128 && time_before(jiffies, stop));
475be4d8 129 if (!b1dma_rx_full(card->port))
1da177e4 130 return -1;
475be4d8 131 *s++ = t1inp(card->port, 0x00);
1da177e4
LT		 132 }
133 return 0;
134}
135
136static int WriteReg(avmcard *card, u32 reg, u8 val)
137{
138 u8 cmd = 0x00;
475be4d8 139 if (b1dma_tolink(card, &cmd, 1) == 0
1da177e4
LT		 140 && b1dma_tolink(card, &reg, 4) == 0) {
141 u32 tmp = val;
142 return b1dma_tolink(card, &tmp, 4);
143 }
144 return -1;
145}
146
147static u8 ReadReg(avmcard *card, u32 reg)
148{
149 u8 cmd = 0x01;
475be4d8 150 if (b1dma_tolink(card, &cmd, 1) == 0
1da177e4
LT		 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
161static inline void _put_byte(void **pp, u8 val)
162{
163 u8 *s = *pp;
164 *s++ = val;
165 *pp = s;
166}
167
168static 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
178static 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
186static 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
195static 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
207static 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
218void 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
242static 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);
475be4d8 261 if (b1dma_readl(card, AMCC_RXPTR) != 0xfffffffc
1da177e4
LT		 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);
475be4d8 267 if (b1dma_readl(card, AMCC_RXPTR) != 0x0
1da177e4
LT		 268 || b1dma_readl(card, AMCC_TXPTR) != 0x0)
269 return 3;
270
271 t1outp(card->port, 0x10, 0x00);
272 t1outp(card->port, 0x07, 0x00);
475be4d8 273
1da177e4
LT		 274 t1outp(card->port, 0x02, 0x02);
275 t1outp(card->port, 0x03, 0x02);
276
475be4d8 277 if ((t1inp(card->port, 0x02) & 0xFE) != 0x02
1da177e4
LT		 278 || t1inp(card->port, 0x3) != 0x03)
279 return 4;
280
281 t1outp(card->port, 0x02, 0x00);
282 t1outp(card->port, 0x03, 0x00);
283
475be4d8 284 if ((t1inp(card->port, 0x02) & 0xFE) != 0x00
1da177e4
LT		 285 || t1inp(card->port, 0x3) != 0x01)
286 return 5;
287
288 return 0;
289}
290
291int t1pci_detect(avmcard *card)
292{
293 int ret;
294
295 if ((ret = b1dma_detect(card)) != 0)
296 return ret;
475be4d8 297
1da177e4 298 /* Transputer test */
475be4d8
JP		 299
300 if (WriteReg(card, 0x80001000, 0x11) != 0
1da177e4
LT		 301 || WriteReg(card, 0x80101000, 0x22) != 0
302 || WriteReg(card, 0x80201000, 0x33) != 0
303 || WriteReg(card, 0x80301000, 0x44) != 0)
304 return 6;
305
475be4d8 306 if (ReadReg(card, 0x80001000) != 0x11
1da177e4
LT		 307 || ReadReg(card, 0x80101000) != 0x22
308 || ReadReg(card, 0x80201000) != 0x33
309 || ReadReg(card, 0x80301000) != 0x44)
310 return 7;
311
475be4d8 312 if (WriteReg(card, 0x80001000, 0x55) != 0
1da177e4
LT		 313 || WriteReg(card, 0x80101000, 0x66) != 0
314 || WriteReg(card, 0x80201000, 0x77) != 0
315 || WriteReg(card, 0x80301000, 0x88) != 0)
316 return 8;
317
475be4d8 318 if (ReadReg(card, 0x80001000) != 0x55
1da177e4
LT		 319 || ReadReg(card, 0x80101000) != 0x66
320 || ReadReg(card, 0x80201000) != 0x77
321 || ReadReg(card, 0x80301000) != 0x88)
322 return 9;
323
324 return 0;
325}
326
327int b1pciv4_detect(avmcard *card)
328{
329 int ret, i;
330
331 if ((ret = b1dma_detect(card)) != 0)
332 return ret;
475be4d8
JP		 333
334 for (i = 0; i < 5; i++) {
1da177e4
LT		 335 if (WriteReg(card, 0x80A00000, 0x21) != 0)
336 return 6;
337 if ((ReadReg(card, 0x80A00000) & 0x01) != 0x01)
338 return 7;
339 }
475be4d8 340 for (i = 0; i < 5; i++) {
1da177e4
LT		 341 if (WriteReg(card, 0x80A00000, 0x20) != 0)
342 return 8;
343 if ((ReadReg(card, 0x80A00000) & 0x01) != 0x00)
344 return 9;
345 }
475be4d8 346
1da177e4
LT		 347 return 0;
348}
349
350static 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
368static 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;
475be4d8 376
1da177e4
LT		 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;
26fb5c58 397#ifdef AVM_B1DMA_DEBUG
1da177e4
LT		 398 printk(KERN_DEBUG "tx: put msg len=%d\n", txlen);
399#endif
400 } else {
475be4d8 401 txlen = skb->len - 2;
26fb5c58 402#ifdef AVM_B1DMA_POLLDEBUG
1da177e4
LT		 403 if (skb->data[2] == SEND_POLLACK)
404 printk(KERN_INFO "%s: send ack\n", card->name);
405#endif
26fb5c58 406#ifdef AVM_B1DMA_DEBUG
475be4d8 407 printk(KERN_DEBUG "tx: put 0x%x len=%d\n",
1da177e4
LT		 408 skb->data[2], txlen);
409#endif
d626f62b
ACM		 410 skb_copy_from_linear_data_offset(skb, 2, dma->sendbuf.dmabuf,
411 skb->len - 2);
1da177e4
LT		 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
425static 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",
475be4d8 433 card->name);
1da177e4
LT		 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
447static 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;
475be4d8 453 void *p = dma->recvbuf.dmabuf + 4;
1da177e4
LT		 454 u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize;
455 u8 b1cmd = _get_byte(&p);
456
26fb5c58 457#ifdef AVM_B1DMA_DEBUG
1da177e4
LT		 458 printk(KERN_DEBUG "rx: 0x%x %lu\n", b1cmd, (unsigned long)dma->recvlen);
459#endif
475be4d8 460
1da177e4
LT		 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 */
475be4d8 469 memset(card->msgbuf + MsgLen, 0, 30 - MsgLen);
1da177e4
LT		 470 MsgLen = 30;
471 CAPIMSG_SETLEN(card->msgbuf, 30);
472 }
475be4d8 473 if (!(skb = alloc_skb(DataB3Len + MsgLen, GFP_ATOMIC))) {
1da177e4 474 printk(KERN_ERR "%s: incoming packet dropped\n",
475be4d8 475 card->name);
1da177e4
LT		 476 } else {
477 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
478 memcpy(skb_put(skb, DataB3Len), 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",
475be4d8 489 card->name);
1da177e4
LT		 490 } else {
491 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
1e9c7813
KK		 492 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_CONF) {
493 spin_lock(&card->lock);
1da177e4 494 capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
475be4d8
JP		 495 CAPIMSG_NCCI(skb->data),
496 CAPIMSG_MSGID(skb->data));
1e9c7813
KK		 497 spin_unlock(&card->lock);
498 }
1da177e4
LT		 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);
1e9c7813 508 spin_lock(&card->lock);
1da177e4 509 capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
1e9c7813 510 spin_unlock(&card->lock);
1da177e4
LT		 511 break;
512
513 case RECEIVE_FREE_NCCI:
514
515 ApplId = _get_word(&p);
516 NCCI = _get_word(&p);
517
1e9c7813
KK		 518 if (NCCI != 0xffffffff) {
519 spin_lock(&card->lock);
1da177e4 520 capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
1e9c7813
KK		 521 spin_unlock(&card->lock);
522 }
1da177e4
LT		 523 break;
524
525 case RECEIVE_START:
26fb5c58 526#ifdef AVM_B1DMA_POLLDEBUG
1da177e4
LT		 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;
475be4d8
JP		 553 while (MsgLen > 0
554 && (card->msgbuf[MsgLen - 1] == '\n'
555 || card->msgbuf[MsgLen - 1] == '\r')) {
556 card->msgbuf[MsgLen - 1] = 0;
1da177e4
LT		 557 MsgLen--;
558 }
559 printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
475be4d8 560 card->name, ApplId, card->msgbuf);
1da177e4
LT		 561 break;
562
563 case RECEIVE_DEBUGMSG:
564 MsgLen = _get_slice(&p, card->msgbuf);
565 card->msgbuf[MsgLen] = 0;
475be4d8
JP		 566 while (MsgLen > 0
567 && (card->msgbuf[MsgLen - 1] == '\n'
568 || card->msgbuf[MsgLen - 1] == '\r')) {
569 card->msgbuf[MsgLen - 1] = 0;
1da177e4
LT		 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",
475be4d8 577 card->name, b1cmd);
1da177e4
LT		 578 return;
579 }
580}
581
582/* ------------------------------------------------------------- */
583
584static 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
475be4d8 597 newcsr = card->csr | (status & ALL_INT);
1da177e4
LT		 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;
475be4d8
JP		 605 if (card->dma->recvlen == 0) {
606 rxlen = b1dma_readl(card, AMCC_RXLEN);
1da177e4
LT		 607 if (rxlen == 0) {
608 dma->recvlen = *((u32 *)dma->recvbuf.dmabuf);
609 rxlen = (dma->recvlen + 3) & ~3;
475be4d8 610 b1dma_writel(card, dma->recvbuf.dmaaddr + 4, AMCC_RXPTR);
1da177e4 611 b1dma_writel(card, rxlen, AMCC_RXLEN);
26fb5c58 612#ifdef AVM_B1DMA_DEBUG
1da177e4
LT		 613 } else {
614 printk(KERN_ERR "%s: rx not complete (%d).\n",
475be4d8 615 card->name, rxlen);
1da177e4
LT		 616#endif
617 }
618 } else {
619 spin_unlock(&card->lock);
620 b1dma_handle_rx(card);
475be4d8 621 dma->recvlen = 0;
1da177e4
LT		 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
7d12e780 639irqreturn_t b1dma_interrupt(int interrupt, void *devptr)
1da177e4
LT		 640{
641 avmcard *card = devptr;
642
643 b1dma_handle_interrupt(card);
644 return IRQ_HANDLED;
645}
646
647/* ------------------------------------------------------------- */
648
649static 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",
475be4d8 662 card->name);
1da177e4
LT		 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
681static 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",
475be4d8 689 card->name);
1da177e4
LT		 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);
475be4d8 697 _put_word(&p, AVM_NCCI_PER_CHANNEL * 30);
1da177e4
LT		 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
704int 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",
475be4d8 715 card->name);
1da177e4
LT		 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",
475be4d8 723 card->name);
1da177e4
LT		 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);
475be4d8
JP		 736 b1dma_writel(card, EN_A2P_TRANSFERS | EN_P2A_TRANSFERS | A2P_HI_PRIORITY |
737 P2A_HI_PRIORITY | RESET_A2P_FLAGS | RESET_P2A_FLAGS,
1da177e4
LT		 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
475be4d8 748 b1dma_send_init(card);
1da177e4
LT		 749
750 return 0;
751}
752
753void 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);
475be4d8 760 b1dma_reset(card);
1da177e4
LT		 761
762 memset(cinfo->version, 0, sizeof(cinfo->version));
763 capilib_release(&cinfo->ncci_head);
1e9c7813 764 spin_unlock_irqrestore(&card->lock, flags);
4e329972 765 capi_ctr_down(ctrl);
1da177e4
LT		 766}
767
768/* ------------------------------------------------------------- */
769
770void b1dma_register_appl(struct capi_ctr *ctrl,
475be4d8
JP		 771 u16 appl,
772 capi_register_params *rp)
1da177e4
LT		 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",
475be4d8 788 card->name);
1da177e4
LT		 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);
475be4d8 796 _put_word(&p, 1024 * (nconn + 1));
1da177e4
LT		 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
807void 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;
1e9c7813 813 unsigned long flags;
1da177e4 814
1e9c7813 815 spin_lock_irqsave(&card->lock, flags);
1da177e4 816 capilib_release_appl(&cinfo->ncci_head, appl);
1e9c7813 817 spin_unlock_irqrestore(&card->lock, flags);
1da177e4
LT		 818
819 skb = alloc_skb(7, GFP_ATOMIC);
820 if (!skb) {
821 printk(KERN_CRIT "%s: no memory, lost release appl.\n",
475be4d8 822 card->name);
1da177e4
LT		 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
838u16 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
475be4d8 844 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) {
1e9c7813
KK		 845 unsigned long flags;
846 spin_lock_irqsave(&card->lock, flags);
1da177e4
LT		 847 retval = capilib_data_b3_req(&cinfo->ncci_head,
848 CAPIMSG_APPID(skb->data),
849 CAPIMSG_NCCI(skb->data),
850 CAPIMSG_MSGID(skb->data));
1e9c7813 851 spin_unlock_irqrestore(&card->lock, flags);
1da177e4 852 }
475be4d8 853 if (retval == CAPI_NOERROR)
1da177e4
LT		 854 b1dma_queue_tx(card, skb);
855
856 return retval;
857}
858
859/* ------------------------------------------------------------- */
860
9a58a80a 861static int b1dmactl_proc_show(struct seq_file *m, void *v)
1da177e4 862{
9a58a80a 863 struct capi_ctr *ctrl = m->private;
1da177e4
LT		 864 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
865 avmcard *card = cinfo->card;
866 u8 flag;
1da177e4
LT		 867 char *s;
868 u32 txoff, txlen, rxoff, rxlen, csr;
869 unsigned long flags;
870
9a58a80a
AD		 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);
1da177e4
LT		 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 }
9a58a80a 887 seq_printf(m, "%-16s %s\n", "type", s);
8e44b29d 888 if ((s = cinfo->version[VER_DRIVER]) != NULL)
9a58a80a 889 seq_printf(m, "%-16s %s\n", "ver_driver", s);
8e44b29d 890 if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
9a58a80a 891 seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
8e44b29d 892 if ((s = cinfo->version[VER_SERIAL]) != NULL)
9a58a80a 893 seq_printf(m, "%-16s %s\n", "ver_serial", s);
1da177e4
LT		 894
895 if (card->cardtype != avm_m1) {
475be4d8
JP		 896 flag = ((u8 *)(ctrl->profile.manu))[3];
897 if (flag)
9a58a80a 898 seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
475be4d8
JP		 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 );
1da177e4
LT		 908 }
909 if (card->cardtype != avm_m1) {
475be4d8 910 flag = ((u8 *)(ctrl->profile.manu))[5];
1da177e4 911 if (flag)
9a58a80a 912 seq_printf(m, "%-16s%s%s%s%s\n",
475be4d8
JP		 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 );
1da177e4 919 }
9a58a80a 920 seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
1da177e4
LT		 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
9a58a80a
AD		 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
945static int b1dmactl_proc_open(struct inode *inode, struct file *file)
946{
d9dda78b 947 return single_open(file, b1dmactl_proc_show, PDE_DATA(inode));
1da177e4
LT		 948}
949
9a58a80a
AD		 950const 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};
957EXPORT_SYMBOL(b1dmactl_proc_fops);
958
1da177e4
LT		 959/* ------------------------------------------------------------- */
960
961EXPORT_SYMBOL(b1dma_reset);
962EXPORT_SYMBOL(t1pci_detect);
963EXPORT_SYMBOL(b1pciv4_detect);
964EXPORT_SYMBOL(b1dma_interrupt);
965
966EXPORT_SYMBOL(b1dma_load_firmware);
967EXPORT_SYMBOL(b1dma_reset_ctr);
968EXPORT_SYMBOL(b1dma_register_appl);
969EXPORT_SYMBOL(b1dma_release_appl);
970EXPORT_SYMBOL(b1dma_send_message);
1da177e4 971
08e51533 972static int __init b1dma_init(void)
1da177e4
LT		 973{
974 char *p;
975 char rev[32];
976
8e44b29d 977 if ((p = strchr(revision, ':')) != NULL && p[1]) {
1da177e4 978 strlcpy(rev, p + 2, sizeof(rev));
8e44b29d 979 if ((p = strchr(rev, '$')) != NULL && p > rev)
475be4d8 980 *(p - 1) = 0;
1da177e4
LT		 981 } else
982 strcpy(rev, "1.0");
983
984 printk(KERN_INFO "b1dma: revision %s\n", rev);
985
986 return 0;
987}
988
08e51533 989static void __exit b1dma_exit(void)
1da177e4
LT		 990{
991}
992
993module_init(b1dma_init);
994module_exit(b1dma_exit);
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