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[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}
[linux-2.6-block.git] / drivers / isdn / hardware / avm / b1dma.c
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1da177e4
LT		 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
1da177e4
LT		 12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/skbuff.h>
15#include <linux/delay.h>
16#include <linux/mm.h>
17#include <linux/interrupt.h>
18#include <linux/ioport.h>
19#include <linux/capi.h>
20#include <linux/kernelcapi.h>
21#include <asm/io.h>
22#include <linux/init.h>
23#include <asm/uaccess.h>
24#include <linux/netdevice.h>
25#include <linux/isdn/capilli.h>
26#include "avmcard.h"
27#include <linux/isdn/capicmd.h>
28#include <linux/isdn/capiutil.h>
29
30static char *revision = "$Revision: 1.1.2.3 $";
31
26fb5c58 32#undef AVM_B1DMA_DEBUG
1da177e4
LT		 33
34/* ------------------------------------------------------------- */
35
36MODULE_DESCRIPTION("CAPI4Linux: DMA support for active AVM cards");
37MODULE_AUTHOR("Carsten Paeth");
38MODULE_LICENSE("GPL");
39
40static int suppress_pollack = 0;
8d3b33f6 41module_param(suppress_pollack, bool, 0);
1da177e4
LT		 42
43/* ------------------------------------------------------------- */
44
45static void b1dma_dispatch_tx(avmcard *card);
46
47/* ------------------------------------------------------------- */
48
49/* S5933 */
50
51#define AMCC_RXPTR 0x24
52#define AMCC_RXLEN 0x28
53#define AMCC_TXPTR 0x2c
54#define AMCC_TXLEN 0x30
55
56#define AMCC_INTCSR 0x38
57# define EN_READ_TC_INT 0x00008000L
58# define EN_WRITE_TC_INT 0x00004000L
59# define EN_TX_TC_INT EN_READ_TC_INT
60# define EN_RX_TC_INT EN_WRITE_TC_INT
61# define AVM_FLAG 0x30000000L
62
63# define ANY_S5933_INT 0x00800000L
64# define READ_TC_INT 0x00080000L
65# define WRITE_TC_INT 0x00040000L
66# define TX_TC_INT READ_TC_INT
67# define RX_TC_INT WRITE_TC_INT
68# define MASTER_ABORT_INT 0x00100000L
69# define TARGET_ABORT_INT 0x00200000L
70# define BUS_MASTER_INT 0x00200000L
71# define ALL_INT 0x000C0000L
72
73#define AMCC_MCSR 0x3c
74# define A2P_HI_PRIORITY 0x00000100L
75# define EN_A2P_TRANSFERS 0x00000400L
76# define P2A_HI_PRIORITY 0x00001000L
77# define EN_P2A_TRANSFERS 0x00004000L
78# define RESET_A2P_FLAGS 0x04000000L
79# define RESET_P2A_FLAGS 0x02000000L
80
81/* ------------------------------------------------------------- */
82
83static inline void b1dma_writel(avmcard *card, u32 value, int off)
84{
85 writel(value, card->mbase + off);
86}
87
88static inline u32 b1dma_readl(avmcard *card, int off)
89{
90 return readl(card->mbase + off);
91}
92
93/* ------------------------------------------------------------- */
94
95static inline int b1dma_tx_empty(unsigned int port)
96{
97 return inb(port + 0x03) & 0x1;
98}
99
100static inline int b1dma_rx_full(unsigned int port)
101{
102 return inb(port + 0x02) & 0x1;
103}
104
105static int b1dma_tolink(avmcard *card, void *buf, unsigned int len)
106{
107 unsigned long stop = jiffies + 1 * HZ; /* maximum wait time 1 sec */
108 unsigned char *s = (unsigned char *)buf;
109 while (len--) {
110 while ( !b1dma_tx_empty(card->port)
111 && time_before(jiffies, stop));
112 if (!b1dma_tx_empty(card->port))
113 return -1;
114 t1outp(card->port, 0x01, *s++);
115 }
116 return 0;
117}
118
119static int b1dma_fromlink(avmcard *card, void *buf, unsigned int len)
120{
121 unsigned long stop = jiffies + 1 * HZ; /* maximum wait time 1 sec */
122 unsigned char *s = (unsigned char *)buf;
123 while (len--) {
124 while ( !b1dma_rx_full(card->port)
125 && time_before(jiffies, stop));
126 if (!b1dma_rx_full(card->port))
127 return -1;
128 *s++ = t1inp(card->port, 0x00);
129 }
130 return 0;
131}
132
133static int WriteReg(avmcard *card, u32 reg, u8 val)
134{
135 u8 cmd = 0x00;
136 if ( b1dma_tolink(card, &cmd, 1) == 0
137 && b1dma_tolink(card, &reg, 4) == 0) {
138 u32 tmp = val;
139 return b1dma_tolink(card, &tmp, 4);
140 }
141 return -1;
142}
143
144static u8 ReadReg(avmcard *card, u32 reg)
145{
146 u8 cmd = 0x01;
147 if ( b1dma_tolink(card, &cmd, 1) == 0
148 && b1dma_tolink(card, &reg, 4) == 0) {
149 u32 tmp;
150 if (b1dma_fromlink(card, &tmp, 4) == 0)
151 return (u8)tmp;
152 }
153 return 0xff;
154}
155
156/* ------------------------------------------------------------- */
157
158static inline void _put_byte(void **pp, u8 val)
159{
160 u8 *s = *pp;
161 *s++ = val;
162 *pp = s;
163}
164
165static inline void _put_word(void **pp, u32 val)
166{
167 u8 *s = *pp;
168 *s++ = val & 0xff;
169 *s++ = (val >> 8) & 0xff;
170 *s++ = (val >> 16) & 0xff;
171 *s++ = (val >> 24) & 0xff;
172 *pp = s;
173}
174
175static inline void _put_slice(void **pp, unsigned char *dp, unsigned int len)
176{
177 unsigned i = len;
178 _put_word(pp, i);
179 while (i-- > 0)
180 _put_byte(pp, *dp++);
181}
182
183static inline u8 _get_byte(void **pp)
184{
185 u8 *s = *pp;
186 u8 val;
187 val = *s++;
188 *pp = s;
189 return val;
190}
191
192static inline u32 _get_word(void **pp)
193{
194 u8 *s = *pp;
195 u32 val;
196 val = *s++;
197 val |= (*s++ << 8);
198 val |= (*s++ << 16);
199 val |= (*s++ << 24);
200 *pp = s;
201 return val;
202}
203
204static inline u32 _get_slice(void **pp, unsigned char *dp)
205{
206 unsigned int len, i;
207
208 len = i = _get_word(pp);
209 while (i-- > 0) *dp++ = _get_byte(pp);
210 return len;
211}
212
213/* ------------------------------------------------------------- */
214
215void b1dma_reset(avmcard *card)
216{
217 card->csr = 0x0;
218 b1dma_writel(card, card->csr, AMCC_INTCSR);
219 b1dma_writel(card, 0, AMCC_MCSR);
220 b1dma_writel(card, 0, AMCC_RXLEN);
221 b1dma_writel(card, 0, AMCC_TXLEN);
222
223 t1outp(card->port, 0x10, 0x00);
224 t1outp(card->port, 0x07, 0x00);
225
226 b1dma_writel(card, 0, AMCC_MCSR);
227 mdelay(10);
228 b1dma_writel(card, 0x0f000000, AMCC_MCSR); /* reset all */
229 mdelay(10);
230 b1dma_writel(card, 0, AMCC_MCSR);
231 if (card->cardtype == avm_t1pci)
232 mdelay(42);
233 else
234 mdelay(10);
235}
236
237/* ------------------------------------------------------------- */
238
239static int b1dma_detect(avmcard *card)
240{
241 b1dma_writel(card, 0, AMCC_MCSR);
242 mdelay(10);
243 b1dma_writel(card, 0x0f000000, AMCC_MCSR); /* reset all */
244 mdelay(10);
245 b1dma_writel(card, 0, AMCC_MCSR);
246 mdelay(42);
247
248 b1dma_writel(card, 0, AMCC_RXLEN);
249 b1dma_writel(card, 0, AMCC_TXLEN);
250 card->csr = 0x0;
251 b1dma_writel(card, card->csr, AMCC_INTCSR);
252
253 if (b1dma_readl(card, AMCC_MCSR) != 0x000000E6)
254 return 1;
255
256 b1dma_writel(card, 0xffffffff, AMCC_RXPTR);
257 b1dma_writel(card, 0xffffffff, AMCC_TXPTR);
258 if ( b1dma_readl(card, AMCC_RXPTR) != 0xfffffffc
259 || b1dma_readl(card, AMCC_TXPTR) != 0xfffffffc)
260 return 2;
261
262 b1dma_writel(card, 0x0, AMCC_RXPTR);
263 b1dma_writel(card, 0x0, AMCC_TXPTR);
264 if ( b1dma_readl(card, AMCC_RXPTR) != 0x0
265 || b1dma_readl(card, AMCC_TXPTR) != 0x0)
266 return 3;
267
268 t1outp(card->port, 0x10, 0x00);
269 t1outp(card->port, 0x07, 0x00);
270
271 t1outp(card->port, 0x02, 0x02);
272 t1outp(card->port, 0x03, 0x02);
273
274 if ( (t1inp(card->port, 0x02) & 0xFE) != 0x02
275 || t1inp(card->port, 0x3) != 0x03)
276 return 4;
277
278 t1outp(card->port, 0x02, 0x00);
279 t1outp(card->port, 0x03, 0x00);
280
281 if ( (t1inp(card->port, 0x02) & 0xFE) != 0x00
282 || t1inp(card->port, 0x3) != 0x01)
283 return 5;
284
285 return 0;
286}
287
288int t1pci_detect(avmcard *card)
289{
290 int ret;
291
292 if ((ret = b1dma_detect(card)) != 0)
293 return ret;
294
295 /* Transputer test */
296
297 if ( WriteReg(card, 0x80001000, 0x11) != 0
298 || WriteReg(card, 0x80101000, 0x22) != 0
299 || WriteReg(card, 0x80201000, 0x33) != 0
300 || WriteReg(card, 0x80301000, 0x44) != 0)
301 return 6;
302
303 if ( ReadReg(card, 0x80001000) != 0x11
304 || ReadReg(card, 0x80101000) != 0x22
305 || ReadReg(card, 0x80201000) != 0x33
306 || ReadReg(card, 0x80301000) != 0x44)
307 return 7;
308
309 if ( WriteReg(card, 0x80001000, 0x55) != 0
310 || WriteReg(card, 0x80101000, 0x66) != 0
311 || WriteReg(card, 0x80201000, 0x77) != 0
312 || WriteReg(card, 0x80301000, 0x88) != 0)
313 return 8;
314
315 if ( ReadReg(card, 0x80001000) != 0x55
316 || ReadReg(card, 0x80101000) != 0x66
317 || ReadReg(card, 0x80201000) != 0x77
318 || ReadReg(card, 0x80301000) != 0x88)
319 return 9;
320
321 return 0;
322}
323
324int b1pciv4_detect(avmcard *card)
325{
326 int ret, i;
327
328 if ((ret = b1dma_detect(card)) != 0)
329 return ret;
330
331 for (i=0; i < 5 ; i++) {
332 if (WriteReg(card, 0x80A00000, 0x21) != 0)
333 return 6;
334 if ((ReadReg(card, 0x80A00000) & 0x01) != 0x01)
335 return 7;
336 }
337 for (i=0; i < 5 ; i++) {
338 if (WriteReg(card, 0x80A00000, 0x20) != 0)
339 return 8;
340 if ((ReadReg(card, 0x80A00000) & 0x01) != 0x00)
341 return 9;
342 }
343
344 return 0;
345}
346
347static void b1dma_queue_tx(avmcard *card, struct sk_buff *skb)
348{
349 unsigned long flags;
350
351 spin_lock_irqsave(&card->lock, flags);
352
353 skb_queue_tail(&card->dma->send_queue, skb);
354
355 if (!(card->csr & EN_TX_TC_INT)) {
356 b1dma_dispatch_tx(card);
357 b1dma_writel(card, card->csr, AMCC_INTCSR);
358 }
359
360 spin_unlock_irqrestore(&card->lock, flags);
361}
362
363/* ------------------------------------------------------------- */
364
365static void b1dma_dispatch_tx(avmcard *card)
366{
367 avmcard_dmainfo *dma = card->dma;
368 struct sk_buff *skb;
369 u8 cmd, subcmd;
370 u16 len;
371 u32 txlen;
372 void *p;
373
374 skb = skb_dequeue(&dma->send_queue);
375
376 len = CAPIMSG_LEN(skb->data);
377
378 if (len) {
379 cmd = CAPIMSG_COMMAND(skb->data);
380 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
381
382 p = dma->sendbuf.dmabuf;
383
384 if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
385 u16 dlen = CAPIMSG_DATALEN(skb->data);
386 _put_byte(&p, SEND_DATA_B3_REQ);
387 _put_slice(&p, skb->data, len);
388 _put_slice(&p, skb->data + len, dlen);
389 } else {
390 _put_byte(&p, SEND_MESSAGE);
391 _put_slice(&p, skb->data, len);
392 }
393 txlen = (u8 *)p - (u8 *)dma->sendbuf.dmabuf;
26fb5c58 394#ifdef AVM_B1DMA_DEBUG
1da177e4
LT		 395 printk(KERN_DEBUG "tx: put msg len=%d\n", txlen);
396#endif
397 } else {
398 txlen = skb->len-2;
26fb5c58 399#ifdef AVM_B1DMA_POLLDEBUG
1da177e4
LT		 400 if (skb->data[2] == SEND_POLLACK)
401 printk(KERN_INFO "%s: send ack\n", card->name);
402#endif
26fb5c58 403#ifdef AVM_B1DMA_DEBUG
1da177e4
LT		 404 printk(KERN_DEBUG "tx: put 0x%x len=%d\n",
405 skb->data[2], txlen);
406#endif
d626f62b
ACM		 407 skb_copy_from_linear_data_offset(skb, 2, dma->sendbuf.dmabuf,
408 skb->len - 2);
1da177e4
LT		 409 }
410 txlen = (txlen + 3) & ~3;
411
412 b1dma_writel(card, dma->sendbuf.dmaaddr, AMCC_TXPTR);
413 b1dma_writel(card, txlen, AMCC_TXLEN);
414
415 card->csr |= EN_TX_TC_INT;
416
417 dev_kfree_skb_any(skb);
418}
419
420/* ------------------------------------------------------------- */
421
422static void queue_pollack(avmcard *card)
423{
424 struct sk_buff *skb;
425 void *p;
426
427 skb = alloc_skb(3, GFP_ATOMIC);
428 if (!skb) {
429 printk(KERN_CRIT "%s: no memory, lost poll ack\n",
430 card->name);
431 return;
432 }
433 p = skb->data;
434 _put_byte(&p, 0);
435 _put_byte(&p, 0);
436 _put_byte(&p, SEND_POLLACK);
437 skb_put(skb, (u8 *)p - (u8 *)skb->data);
438
439 b1dma_queue_tx(card, skb);
440}
441
442/* ------------------------------------------------------------- */
443
444static void b1dma_handle_rx(avmcard *card)
445{
446 avmctrl_info *cinfo = &card->ctrlinfo[0];
447 avmcard_dmainfo *dma = card->dma;
448 struct capi_ctr *ctrl = &cinfo->capi_ctrl;
449 struct sk_buff *skb;
450 void *p = dma->recvbuf.dmabuf+4;
451 u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize;
452 u8 b1cmd = _get_byte(&p);
453
26fb5c58 454#ifdef AVM_B1DMA_DEBUG
1da177e4
LT		 455 printk(KERN_DEBUG "rx: 0x%x %lu\n", b1cmd, (unsigned long)dma->recvlen);
456#endif
457
458 switch (b1cmd) {
459 case RECEIVE_DATA_B3_IND:
460
461 ApplId = (unsigned) _get_word(&p);
462 MsgLen = _get_slice(&p, card->msgbuf);
463 DataB3Len = _get_slice(&p, card->databuf);
464
465 if (MsgLen < 30) { /* not CAPI 64Bit */
466 memset(card->msgbuf+MsgLen, 0, 30-MsgLen);
467 MsgLen = 30;
468 CAPIMSG_SETLEN(card->msgbuf, 30);
469 }
470 if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) {
471 printk(KERN_ERR "%s: incoming packet dropped\n",
472 card->name);
473 } else {
474 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
475 memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
476 capi_ctr_handle_message(ctrl, ApplId, skb);
477 }
478 break;
479
480 case RECEIVE_MESSAGE:
481
482 ApplId = (unsigned) _get_word(&p);
483 MsgLen = _get_slice(&p, card->msgbuf);
484 if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
485 printk(KERN_ERR "%s: incoming packet dropped\n",
486 card->name);
487 } else {
488 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
489 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_CONF)
490 capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
491 CAPIMSG_NCCI(skb->data),
492 CAPIMSG_MSGID(skb->data));
493
494 capi_ctr_handle_message(ctrl, ApplId, skb);
495 }
496 break;
497
498 case RECEIVE_NEW_NCCI:
499
500 ApplId = _get_word(&p);
501 NCCI = _get_word(&p);
502 WindowSize = _get_word(&p);
503
504 capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
505
506 break;
507
508 case RECEIVE_FREE_NCCI:
509
510 ApplId = _get_word(&p);
511 NCCI = _get_word(&p);
512
513 if (NCCI != 0xffffffff)
514 capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
515
516 break;
517
518 case RECEIVE_START:
26fb5c58 519#ifdef AVM_B1DMA_POLLDEBUG
1da177e4
LT		 520 printk(KERN_INFO "%s: receive poll\n", card->name);
521#endif
522 if (!suppress_pollack)
523 queue_pollack(card);
524 capi_ctr_resume_output(ctrl);
525 break;
526
527 case RECEIVE_STOP:
528 capi_ctr_suspend_output(ctrl);
529 break;
530
531 case RECEIVE_INIT:
532
533 cinfo->versionlen = _get_slice(&p, cinfo->versionbuf);
534 b1_parse_version(cinfo);
535 printk(KERN_INFO "%s: %s-card (%s) now active\n",
536 card->name,
537 cinfo->version[VER_CARDTYPE],
538 cinfo->version[VER_DRIVER]);
539 capi_ctr_ready(ctrl);
540 break;
541
542 case RECEIVE_TASK_READY:
543 ApplId = (unsigned) _get_word(&p);
544 MsgLen = _get_slice(&p, card->msgbuf);
545 card->msgbuf[MsgLen] = 0;
546 while ( MsgLen > 0
547 && ( card->msgbuf[MsgLen-1] == '\n'
548 || card->msgbuf[MsgLen-1] == '\r')) {
549 card->msgbuf[MsgLen-1] = 0;
550 MsgLen--;
551 }
552 printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
553 card->name, ApplId, card->msgbuf);
554 break;
555
556 case RECEIVE_DEBUGMSG:
557 MsgLen = _get_slice(&p, card->msgbuf);
558 card->msgbuf[MsgLen] = 0;
559 while ( MsgLen > 0
560 && ( card->msgbuf[MsgLen-1] == '\n'
561 || card->msgbuf[MsgLen-1] == '\r')) {
562 card->msgbuf[MsgLen-1] = 0;
563 MsgLen--;
564 }
565 printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
566 break;
567
568 default:
569 printk(KERN_ERR "%s: b1dma_interrupt: 0x%x ???\n",
570 card->name, b1cmd);
571 return;
572 }
573}
574
575/* ------------------------------------------------------------- */
576
577static void b1dma_handle_interrupt(avmcard *card)
578{
579 u32 status;
580 u32 newcsr;
581
582 spin_lock(&card->lock);
583
584 status = b1dma_readl(card, AMCC_INTCSR);
585 if ((status & ANY_S5933_INT) == 0) {
586 spin_unlock(&card->lock);
587 return;
588 }
589
590 newcsr = card->csr | (status & ALL_INT);
591 if (status & TX_TC_INT) newcsr &= ~EN_TX_TC_INT;
592 if (status & RX_TC_INT) newcsr &= ~EN_RX_TC_INT;
593 b1dma_writel(card, newcsr, AMCC_INTCSR);
594
595 if ((status & RX_TC_INT) != 0) {
596 struct avmcard_dmainfo *dma = card->dma;
597 u32 rxlen;
598 if (card->dma->recvlen == 0) {
599 rxlen = b1dma_readl(card, AMCC_RXLEN);
600 if (rxlen == 0) {
601 dma->recvlen = *((u32 *)dma->recvbuf.dmabuf);
602 rxlen = (dma->recvlen + 3) & ~3;
603 b1dma_writel(card, dma->recvbuf.dmaaddr+4, AMCC_RXPTR);
604 b1dma_writel(card, rxlen, AMCC_RXLEN);
26fb5c58 605#ifdef AVM_B1DMA_DEBUG
1da177e4
LT		 606 } else {
607 printk(KERN_ERR "%s: rx not complete (%d).\n",
608 card->name, rxlen);
609#endif
610 }
611 } else {
612 spin_unlock(&card->lock);
613 b1dma_handle_rx(card);
614 dma->recvlen = 0;
615 spin_lock(&card->lock);
616 b1dma_writel(card, dma->recvbuf.dmaaddr, AMCC_RXPTR);
617 b1dma_writel(card, 4, AMCC_RXLEN);
618 }
619 }
620
621 if ((status & TX_TC_INT) != 0) {
622 if (skb_queue_empty(&card->dma->send_queue))
623 card->csr &= ~EN_TX_TC_INT;
624 else
625 b1dma_dispatch_tx(card);
626 }
627 b1dma_writel(card, card->csr, AMCC_INTCSR);
628
629 spin_unlock(&card->lock);
630}
631
7d12e780 632irqreturn_t b1dma_interrupt(int interrupt, void *devptr)
1da177e4
LT		 633{
634 avmcard *card = devptr;
635
636 b1dma_handle_interrupt(card);
637 return IRQ_HANDLED;
638}
639
640/* ------------------------------------------------------------- */
641
642static int b1dma_loaded(avmcard *card)
643{
644 unsigned long stop;
645 unsigned char ans;
646 unsigned long tout = 2;
647 unsigned int base = card->port;
648
649 for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) {
650 if (b1_tx_empty(base))
651 break;
652 }
653 if (!b1_tx_empty(base)) {
654 printk(KERN_ERR "%s: b1dma_loaded: tx err, corrupted t4 file ?\n",
655 card->name);
656 return 0;
657 }
658 b1_put_byte(base, SEND_POLLACK);
659 for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) {
660 if (b1_rx_full(base)) {
661 if ((ans = b1_get_byte(base)) == RECEIVE_POLLDWORD) {
662 return 1;
663 }
664 printk(KERN_ERR "%s: b1dma_loaded: got 0x%x, firmware not running in dword mode\n", card->name, ans);
665 return 0;
666 }
667 }
668 printk(KERN_ERR "%s: b1dma_loaded: firmware not running\n", card->name);
669 return 0;
670}
671
672/* ------------------------------------------------------------- */
673
674static void b1dma_send_init(avmcard *card)
675{
676 struct sk_buff *skb;
677 void *p;
678
679 skb = alloc_skb(15, GFP_ATOMIC);
680 if (!skb) {
681 printk(KERN_CRIT "%s: no memory, lost register appl.\n",
682 card->name);
683 return;
684 }
685 p = skb->data;
686 _put_byte(&p, 0);
687 _put_byte(&p, 0);
688 _put_byte(&p, SEND_INIT);
689 _put_word(&p, CAPI_MAXAPPL);
690 _put_word(&p, AVM_NCCI_PER_CHANNEL*30);
691 _put_word(&p, card->cardnr - 1);
692 skb_put(skb, (u8 *)p - (u8 *)skb->data);
693
694 b1dma_queue_tx(card, skb);
695}
696
697int b1dma_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
698{
699 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
700 avmcard *card = cinfo->card;
701 int retval;
702
703 b1dma_reset(card);
704
705 if ((retval = b1_load_t4file(card, &data->firmware))) {
706 b1dma_reset(card);
707 printk(KERN_ERR "%s: failed to load t4file!!\n",
708 card->name);
709 return retval;
710 }
711
712 if (data->configuration.len > 0 && data->configuration.data) {
713 if ((retval = b1_load_config(card, &data->configuration))) {
714 b1dma_reset(card);
715 printk(KERN_ERR "%s: failed to load config!!\n",
716 card->name);
717 return retval;
718 }
719 }
720
721 if (!b1dma_loaded(card)) {
722 b1dma_reset(card);
723 printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
724 return -EIO;
725 }
726
727 card->csr = AVM_FLAG;
728 b1dma_writel(card, card->csr, AMCC_INTCSR);
729 b1dma_writel(card, EN_A2P_TRANSFERS|EN_P2A_TRANSFERS|A2P_HI_PRIORITY|
730 P2A_HI_PRIORITY|RESET_A2P_FLAGS|RESET_P2A_FLAGS,
731 AMCC_MCSR);
732 t1outp(card->port, 0x07, 0x30);
733 t1outp(card->port, 0x10, 0xF0);
734
735 card->dma->recvlen = 0;
736 b1dma_writel(card, card->dma->recvbuf.dmaaddr, AMCC_RXPTR);
737 b1dma_writel(card, 4, AMCC_RXLEN);
738 card->csr |= EN_RX_TC_INT;
739 b1dma_writel(card, card->csr, AMCC_INTCSR);
740
741 b1dma_send_init(card);
742
743 return 0;
744}
745
746void b1dma_reset_ctr(struct capi_ctr *ctrl)
747{
748 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
749 avmcard *card = cinfo->card;
750 unsigned long flags;
751
752 spin_lock_irqsave(&card->lock, flags);
753 b1dma_reset(card);
754 spin_unlock_irqrestore(&card->lock, flags);
755
756 memset(cinfo->version, 0, sizeof(cinfo->version));
757 capilib_release(&cinfo->ncci_head);
758 capi_ctr_reseted(ctrl);
759}
760
761/* ------------------------------------------------------------- */
762
763void b1dma_register_appl(struct capi_ctr *ctrl,
764 u16 appl,
765 capi_register_params *rp)
766{
767 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
768 avmcard *card = cinfo->card;
769 struct sk_buff *skb;
770 int want = rp->level3cnt;
771 int nconn;
772 void *p;
773
774 if (want > 0) nconn = want;
775 else nconn = ctrl->profile.nbchannel * -want;
776 if (nconn == 0) nconn = ctrl->profile.nbchannel;
777
778 skb = alloc_skb(23, GFP_ATOMIC);
779 if (!skb) {
780 printk(KERN_CRIT "%s: no memory, lost register appl.\n",
781 card->name);
782 return;
783 }
784 p = skb->data;
785 _put_byte(&p, 0);
786 _put_byte(&p, 0);
787 _put_byte(&p, SEND_REGISTER);
788 _put_word(&p, appl);
789 _put_word(&p, 1024 * (nconn+1));
790 _put_word(&p, nconn);
791 _put_word(&p, rp->datablkcnt);
792 _put_word(&p, rp->datablklen);
793 skb_put(skb, (u8 *)p - (u8 *)skb->data);
794
795 b1dma_queue_tx(card, skb);
796}
797
798/* ------------------------------------------------------------- */
799
800void b1dma_release_appl(struct capi_ctr *ctrl, u16 appl)
801{
802 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
803 avmcard *card = cinfo->card;
804 struct sk_buff *skb;
805 void *p;
806
807 capilib_release_appl(&cinfo->ncci_head, appl);
808
809 skb = alloc_skb(7, GFP_ATOMIC);
810 if (!skb) {
811 printk(KERN_CRIT "%s: no memory, lost release appl.\n",
812 card->name);
813 return;
814 }
815 p = skb->data;
816 _put_byte(&p, 0);
817 _put_byte(&p, 0);
818 _put_byte(&p, SEND_RELEASE);
819 _put_word(&p, appl);
820
821 skb_put(skb, (u8 *)p - (u8 *)skb->data);
822
823 b1dma_queue_tx(card, skb);
824}
825
826/* ------------------------------------------------------------- */
827
828u16 b1dma_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
829{
830 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
831 avmcard *card = cinfo->card;
832 u16 retval = CAPI_NOERROR;
833
834 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) {
835 retval = capilib_data_b3_req(&cinfo->ncci_head,
836 CAPIMSG_APPID(skb->data),
837 CAPIMSG_NCCI(skb->data),
838 CAPIMSG_MSGID(skb->data));
839 }
840 if (retval == CAPI_NOERROR)
841 b1dma_queue_tx(card, skb);
842
843 return retval;
844}
845
846/* ------------------------------------------------------------- */
847
848int b1dmactl_read_proc(char *page, char **start, off_t off,
849 int count, int *eof, struct capi_ctr *ctrl)
850{
851 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
852 avmcard *card = cinfo->card;
853 u8 flag;
854 int len = 0;
855 char *s;
856 u32 txoff, txlen, rxoff, rxlen, csr;
857 unsigned long flags;
858
859 len += sprintf(page+len, "%-16s %s\n", "name", card->name);
860 len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
861 len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
862 len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
863 switch (card->cardtype) {
864 case avm_b1isa: s = "B1 ISA"; break;
865 case avm_b1pci: s = "B1 PCI"; break;
866 case avm_b1pcmcia: s = "B1 PCMCIA"; break;
867 case avm_m1: s = "M1"; break;
868 case avm_m2: s = "M2"; break;
869 case avm_t1isa: s = "T1 ISA (HEMA)"; break;
870 case avm_t1pci: s = "T1 PCI"; break;
871 case avm_c4: s = "C4"; break;
872 case avm_c2: s = "C2"; break;
873 default: s = "???"; break;
874 }
875 len += sprintf(page+len, "%-16s %s\n", "type", s);
876 if ((s = cinfo->version[VER_DRIVER]) != 0)
877 len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
878 if ((s = cinfo->version[VER_CARDTYPE]) != 0)
879 len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
880 if ((s = cinfo->version[VER_SERIAL]) != 0)
881 len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
882
883 if (card->cardtype != avm_m1) {
884 flag = ((u8 *)(ctrl->profile.manu))[3];
885 if (flag)
886 len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
887 "protocol",
888 (flag & 0x01) ? " DSS1" : "",
889 (flag & 0x02) ? " CT1" : "",
890 (flag & 0x04) ? " VN3" : "",
891 (flag & 0x08) ? " NI1" : "",
892 (flag & 0x10) ? " AUSTEL" : "",
893 (flag & 0x20) ? " ESS" : "",
894 (flag & 0x40) ? " 1TR6" : ""
895 );
896 }
897 if (card->cardtype != avm_m1) {
898 flag = ((u8 *)(ctrl->profile.manu))[5];
899 if (flag)
900 len += sprintf(page+len, "%-16s%s%s%s%s\n",
901 "linetype",
902 (flag & 0x01) ? " point to point" : "",
903 (flag & 0x02) ? " point to multipoint" : "",
904 (flag & 0x08) ? " leased line without D-channel" : "",
905 (flag & 0x04) ? " leased line with D-channel" : ""
906 );
907 }
908 len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
909
910
911 spin_lock_irqsave(&card->lock, flags);
912
913 txoff = (dma_addr_t)b1dma_readl(card, AMCC_TXPTR)-card->dma->sendbuf.dmaaddr;
914 txlen = b1dma_readl(card, AMCC_TXLEN);
915
916 rxoff = (dma_addr_t)b1dma_readl(card, AMCC_RXPTR)-card->dma->recvbuf.dmaaddr;
917 rxlen = b1dma_readl(card, AMCC_RXLEN);
918
919 csr = b1dma_readl(card, AMCC_INTCSR);
920
921 spin_unlock_irqrestore(&card->lock, flags);
922
923 len += sprintf(page+len, "%-16s 0x%lx\n",
924 "csr (cached)", (unsigned long)card->csr);
925 len += sprintf(page+len, "%-16s 0x%lx\n",
926 "csr", (unsigned long)csr);
927 len += sprintf(page+len, "%-16s %lu\n",
928 "txoff", (unsigned long)txoff);
929 len += sprintf(page+len, "%-16s %lu\n",
930 "txlen", (unsigned long)txlen);
931 len += sprintf(page+len, "%-16s %lu\n",
932 "rxoff", (unsigned long)rxoff);
933 len += sprintf(page+len, "%-16s %lu\n",
934 "rxlen", (unsigned long)rxlen);
935
936 if (off+count >= len)
937 *eof = 1;
938 if (len < off)
939 return 0;
940 *start = page + off;
941 return ((count < len-off) ? count : len-off);
942}
943
944/* ------------------------------------------------------------- */
945
946EXPORT_SYMBOL(b1dma_reset);
947EXPORT_SYMBOL(t1pci_detect);
948EXPORT_SYMBOL(b1pciv4_detect);
949EXPORT_SYMBOL(b1dma_interrupt);
950
951EXPORT_SYMBOL(b1dma_load_firmware);
952EXPORT_SYMBOL(b1dma_reset_ctr);
953EXPORT_SYMBOL(b1dma_register_appl);
954EXPORT_SYMBOL(b1dma_release_appl);
955EXPORT_SYMBOL(b1dma_send_message);
956EXPORT_SYMBOL(b1dmactl_read_proc);
957
08e51533 958static int __init b1dma_init(void)
1da177e4
LT		 959{
960 char *p;
961 char rev[32];
962
963 if ((p = strchr(revision, ':')) != 0 && p[1]) {
964 strlcpy(rev, p + 2, sizeof(rev));
965 if ((p = strchr(rev, '$')) != 0 && p > rev)
966 *(p-1) = 0;
967 } else
968 strcpy(rev, "1.0");
969
970 printk(KERN_INFO "b1dma: revision %s\n", rev);
971
972 return 0;
973}
974
08e51533 975static void __exit b1dma_exit(void)
1da177e4
LT		 976{
977}
978
979module_init(b1dma_init);
980module_exit(b1dma_exit);
Linux 6.x block layer and io_uring tree(s)