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b1dma.c
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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 <[email protected]>
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 <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 
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  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",
489  card->name);
490  } else {
491  memcpy(skb_put(skb, MsgLen), 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(inode)->data);
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);
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