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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 | ||
12 | #include <linux/config.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/skbuff.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/mm.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/ioport.h> | |
20 | #include <linux/capi.h> | |
21 | #include <linux/kernelcapi.h> | |
22 | #include <asm/io.h> | |
23 | #include <linux/init.h> | |
24 | #include <asm/uaccess.h> | |
25 | #include <linux/netdevice.h> | |
26 | #include <linux/isdn/capilli.h> | |
27 | #include "avmcard.h" | |
28 | #include <linux/isdn/capicmd.h> | |
29 | #include <linux/isdn/capiutil.h> | |
30 | ||
31 | static char *revision = "$Revision: 1.1.2.3 $"; | |
32 | ||
33 | #undef CONFIG_B1DMA_DEBUG | |
34 | ||
35 | /* ------------------------------------------------------------- */ | |
36 | ||
37 | MODULE_DESCRIPTION("CAPI4Linux: DMA support for active AVM cards"); | |
38 | MODULE_AUTHOR("Carsten Paeth"); | |
39 | MODULE_LICENSE("GPL"); | |
40 | ||
41 | static int suppress_pollack = 0; | |
42 | MODULE_PARM(suppress_pollack, "0-1i"); | |
43 | ||
44 | /* ------------------------------------------------------------- */ | |
45 | ||
46 | static void b1dma_dispatch_tx(avmcard *card); | |
47 | ||
48 | /* ------------------------------------------------------------- */ | |
49 | ||
50 | /* S5933 */ | |
51 | ||
52 | #define AMCC_RXPTR 0x24 | |
53 | #define AMCC_RXLEN 0x28 | |
54 | #define AMCC_TXPTR 0x2c | |
55 | #define AMCC_TXLEN 0x30 | |
56 | ||
57 | #define AMCC_INTCSR 0x38 | |
58 | # define EN_READ_TC_INT 0x00008000L | |
59 | # define EN_WRITE_TC_INT 0x00004000L | |
60 | # define EN_TX_TC_INT EN_READ_TC_INT | |
61 | # define EN_RX_TC_INT EN_WRITE_TC_INT | |
62 | # define AVM_FLAG 0x30000000L | |
63 | ||
64 | # define ANY_S5933_INT 0x00800000L | |
65 | # define READ_TC_INT 0x00080000L | |
66 | # define WRITE_TC_INT 0x00040000L | |
67 | # define TX_TC_INT READ_TC_INT | |
68 | # define RX_TC_INT WRITE_TC_INT | |
69 | # define MASTER_ABORT_INT 0x00100000L | |
70 | # define TARGET_ABORT_INT 0x00200000L | |
71 | # define BUS_MASTER_INT 0x00200000L | |
72 | # define ALL_INT 0x000C0000L | |
73 | ||
74 | #define AMCC_MCSR 0x3c | |
75 | # define A2P_HI_PRIORITY 0x00000100L | |
76 | # define EN_A2P_TRANSFERS 0x00000400L | |
77 | # define P2A_HI_PRIORITY 0x00001000L | |
78 | # define EN_P2A_TRANSFERS 0x00004000L | |
79 | # define RESET_A2P_FLAGS 0x04000000L | |
80 | # define RESET_P2A_FLAGS 0x02000000L | |
81 | ||
82 | /* ------------------------------------------------------------- */ | |
83 | ||
84 | static inline void b1dma_writel(avmcard *card, u32 value, int off) | |
85 | { | |
86 | writel(value, card->mbase + off); | |
87 | } | |
88 | ||
89 | static inline u32 b1dma_readl(avmcard *card, int off) | |
90 | { | |
91 | return readl(card->mbase + off); | |
92 | } | |
93 | ||
94 | /* ------------------------------------------------------------- */ | |
95 | ||
96 | static inline int b1dma_tx_empty(unsigned int port) | |
97 | { | |
98 | return inb(port + 0x03) & 0x1; | |
99 | } | |
100 | ||
101 | static inline int b1dma_rx_full(unsigned int port) | |
102 | { | |
103 | return inb(port + 0x02) & 0x1; | |
104 | } | |
105 | ||
106 | static int b1dma_tolink(avmcard *card, void *buf, unsigned int len) | |
107 | { | |
108 | unsigned long stop = jiffies + 1 * HZ; /* maximum wait time 1 sec */ | |
109 | unsigned char *s = (unsigned char *)buf; | |
110 | while (len--) { | |
111 | while ( !b1dma_tx_empty(card->port) | |
112 | && time_before(jiffies, stop)); | |
113 | if (!b1dma_tx_empty(card->port)) | |
114 | return -1; | |
115 | t1outp(card->port, 0x01, *s++); | |
116 | } | |
117 | return 0; | |
118 | } | |
119 | ||
120 | static int b1dma_fromlink(avmcard *card, void *buf, unsigned int len) | |
121 | { | |
122 | unsigned long stop = jiffies + 1 * HZ; /* maximum wait time 1 sec */ | |
123 | unsigned char *s = (unsigned char *)buf; | |
124 | while (len--) { | |
125 | while ( !b1dma_rx_full(card->port) | |
126 | && time_before(jiffies, stop)); | |
127 | if (!b1dma_rx_full(card->port)) | |
128 | return -1; | |
129 | *s++ = t1inp(card->port, 0x00); | |
130 | } | |
131 | return 0; | |
132 | } | |
133 | ||
134 | static int WriteReg(avmcard *card, u32 reg, u8 val) | |
135 | { | |
136 | u8 cmd = 0x00; | |
137 | if ( b1dma_tolink(card, &cmd, 1) == 0 | |
138 | && b1dma_tolink(card, ®, 4) == 0) { | |
139 | u32 tmp = val; | |
140 | return b1dma_tolink(card, &tmp, 4); | |
141 | } | |
142 | return -1; | |
143 | } | |
144 | ||
145 | static u8 ReadReg(avmcard *card, u32 reg) | |
146 | { | |
147 | u8 cmd = 0x01; | |
148 | if ( b1dma_tolink(card, &cmd, 1) == 0 | |
149 | && b1dma_tolink(card, ®, 4) == 0) { | |
150 | u32 tmp; | |
151 | if (b1dma_fromlink(card, &tmp, 4) == 0) | |
152 | return (u8)tmp; | |
153 | } | |
154 | return 0xff; | |
155 | } | |
156 | ||
157 | /* ------------------------------------------------------------- */ | |
158 | ||
159 | static inline void _put_byte(void **pp, u8 val) | |
160 | { | |
161 | u8 *s = *pp; | |
162 | *s++ = val; | |
163 | *pp = s; | |
164 | } | |
165 | ||
166 | static inline void _put_word(void **pp, u32 val) | |
167 | { | |
168 | u8 *s = *pp; | |
169 | *s++ = val & 0xff; | |
170 | *s++ = (val >> 8) & 0xff; | |
171 | *s++ = (val >> 16) & 0xff; | |
172 | *s++ = (val >> 24) & 0xff; | |
173 | *pp = s; | |
174 | } | |
175 | ||
176 | static inline void _put_slice(void **pp, unsigned char *dp, unsigned int len) | |
177 | { | |
178 | unsigned i = len; | |
179 | _put_word(pp, i); | |
180 | while (i-- > 0) | |
181 | _put_byte(pp, *dp++); | |
182 | } | |
183 | ||
184 | static inline u8 _get_byte(void **pp) | |
185 | { | |
186 | u8 *s = *pp; | |
187 | u8 val; | |
188 | val = *s++; | |
189 | *pp = s; | |
190 | return val; | |
191 | } | |
192 | ||
193 | static inline u32 _get_word(void **pp) | |
194 | { | |
195 | u8 *s = *pp; | |
196 | u32 val; | |
197 | val = *s++; | |
198 | val |= (*s++ << 8); | |
199 | val |= (*s++ << 16); | |
200 | val |= (*s++ << 24); | |
201 | *pp = s; | |
202 | return val; | |
203 | } | |
204 | ||
205 | static inline u32 _get_slice(void **pp, unsigned char *dp) | |
206 | { | |
207 | unsigned int len, i; | |
208 | ||
209 | len = i = _get_word(pp); | |
210 | while (i-- > 0) *dp++ = _get_byte(pp); | |
211 | return len; | |
212 | } | |
213 | ||
214 | /* ------------------------------------------------------------- */ | |
215 | ||
216 | void b1dma_reset(avmcard *card) | |
217 | { | |
218 | card->csr = 0x0; | |
219 | b1dma_writel(card, card->csr, AMCC_INTCSR); | |
220 | b1dma_writel(card, 0, AMCC_MCSR); | |
221 | b1dma_writel(card, 0, AMCC_RXLEN); | |
222 | b1dma_writel(card, 0, AMCC_TXLEN); | |
223 | ||
224 | t1outp(card->port, 0x10, 0x00); | |
225 | t1outp(card->port, 0x07, 0x00); | |
226 | ||
227 | b1dma_writel(card, 0, AMCC_MCSR); | |
228 | mdelay(10); | |
229 | b1dma_writel(card, 0x0f000000, AMCC_MCSR); /* reset all */ | |
230 | mdelay(10); | |
231 | b1dma_writel(card, 0, AMCC_MCSR); | |
232 | if (card->cardtype == avm_t1pci) | |
233 | mdelay(42); | |
234 | else | |
235 | mdelay(10); | |
236 | } | |
237 | ||
238 | /* ------------------------------------------------------------- */ | |
239 | ||
240 | static int b1dma_detect(avmcard *card) | |
241 | { | |
242 | b1dma_writel(card, 0, AMCC_MCSR); | |
243 | mdelay(10); | |
244 | b1dma_writel(card, 0x0f000000, AMCC_MCSR); /* reset all */ | |
245 | mdelay(10); | |
246 | b1dma_writel(card, 0, AMCC_MCSR); | |
247 | mdelay(42); | |
248 | ||
249 | b1dma_writel(card, 0, AMCC_RXLEN); | |
250 | b1dma_writel(card, 0, AMCC_TXLEN); | |
251 | card->csr = 0x0; | |
252 | b1dma_writel(card, card->csr, AMCC_INTCSR); | |
253 | ||
254 | if (b1dma_readl(card, AMCC_MCSR) != 0x000000E6) | |
255 | return 1; | |
256 | ||
257 | b1dma_writel(card, 0xffffffff, AMCC_RXPTR); | |
258 | b1dma_writel(card, 0xffffffff, AMCC_TXPTR); | |
259 | if ( b1dma_readl(card, AMCC_RXPTR) != 0xfffffffc | |
260 | || b1dma_readl(card, AMCC_TXPTR) != 0xfffffffc) | |
261 | return 2; | |
262 | ||
263 | b1dma_writel(card, 0x0, AMCC_RXPTR); | |
264 | b1dma_writel(card, 0x0, AMCC_TXPTR); | |
265 | if ( b1dma_readl(card, AMCC_RXPTR) != 0x0 | |
266 | || b1dma_readl(card, AMCC_TXPTR) != 0x0) | |
267 | return 3; | |
268 | ||
269 | t1outp(card->port, 0x10, 0x00); | |
270 | t1outp(card->port, 0x07, 0x00); | |
271 | ||
272 | t1outp(card->port, 0x02, 0x02); | |
273 | t1outp(card->port, 0x03, 0x02); | |
274 | ||
275 | if ( (t1inp(card->port, 0x02) & 0xFE) != 0x02 | |
276 | || t1inp(card->port, 0x3) != 0x03) | |
277 | return 4; | |
278 | ||
279 | t1outp(card->port, 0x02, 0x00); | |
280 | t1outp(card->port, 0x03, 0x00); | |
281 | ||
282 | if ( (t1inp(card->port, 0x02) & 0xFE) != 0x00 | |
283 | || t1inp(card->port, 0x3) != 0x01) | |
284 | return 5; | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | int t1pci_detect(avmcard *card) | |
290 | { | |
291 | int ret; | |
292 | ||
293 | if ((ret = b1dma_detect(card)) != 0) | |
294 | return ret; | |
295 | ||
296 | /* Transputer test */ | |
297 | ||
298 | if ( WriteReg(card, 0x80001000, 0x11) != 0 | |
299 | || WriteReg(card, 0x80101000, 0x22) != 0 | |
300 | || WriteReg(card, 0x80201000, 0x33) != 0 | |
301 | || WriteReg(card, 0x80301000, 0x44) != 0) | |
302 | return 6; | |
303 | ||
304 | if ( ReadReg(card, 0x80001000) != 0x11 | |
305 | || ReadReg(card, 0x80101000) != 0x22 | |
306 | || ReadReg(card, 0x80201000) != 0x33 | |
307 | || ReadReg(card, 0x80301000) != 0x44) | |
308 | return 7; | |
309 | ||
310 | if ( WriteReg(card, 0x80001000, 0x55) != 0 | |
311 | || WriteReg(card, 0x80101000, 0x66) != 0 | |
312 | || WriteReg(card, 0x80201000, 0x77) != 0 | |
313 | || WriteReg(card, 0x80301000, 0x88) != 0) | |
314 | return 8; | |
315 | ||
316 | if ( ReadReg(card, 0x80001000) != 0x55 | |
317 | || ReadReg(card, 0x80101000) != 0x66 | |
318 | || ReadReg(card, 0x80201000) != 0x77 | |
319 | || ReadReg(card, 0x80301000) != 0x88) | |
320 | return 9; | |
321 | ||
322 | return 0; | |
323 | } | |
324 | ||
325 | int b1pciv4_detect(avmcard *card) | |
326 | { | |
327 | int ret, i; | |
328 | ||
329 | if ((ret = b1dma_detect(card)) != 0) | |
330 | return ret; | |
331 | ||
332 | for (i=0; i < 5 ; i++) { | |
333 | if (WriteReg(card, 0x80A00000, 0x21) != 0) | |
334 | return 6; | |
335 | if ((ReadReg(card, 0x80A00000) & 0x01) != 0x01) | |
336 | return 7; | |
337 | } | |
338 | for (i=0; i < 5 ; i++) { | |
339 | if (WriteReg(card, 0x80A00000, 0x20) != 0) | |
340 | return 8; | |
341 | if ((ReadReg(card, 0x80A00000) & 0x01) != 0x00) | |
342 | return 9; | |
343 | } | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
348 | static void b1dma_queue_tx(avmcard *card, struct sk_buff *skb) | |
349 | { | |
350 | unsigned long flags; | |
351 | ||
352 | spin_lock_irqsave(&card->lock, flags); | |
353 | ||
354 | skb_queue_tail(&card->dma->send_queue, skb); | |
355 | ||
356 | if (!(card->csr & EN_TX_TC_INT)) { | |
357 | b1dma_dispatch_tx(card); | |
358 | b1dma_writel(card, card->csr, AMCC_INTCSR); | |
359 | } | |
360 | ||
361 | spin_unlock_irqrestore(&card->lock, flags); | |
362 | } | |
363 | ||
364 | /* ------------------------------------------------------------- */ | |
365 | ||
366 | static void b1dma_dispatch_tx(avmcard *card) | |
367 | { | |
368 | avmcard_dmainfo *dma = card->dma; | |
369 | struct sk_buff *skb; | |
370 | u8 cmd, subcmd; | |
371 | u16 len; | |
372 | u32 txlen; | |
373 | void *p; | |
374 | ||
375 | skb = skb_dequeue(&dma->send_queue); | |
376 | ||
377 | len = CAPIMSG_LEN(skb->data); | |
378 | ||
379 | if (len) { | |
380 | cmd = CAPIMSG_COMMAND(skb->data); | |
381 | subcmd = CAPIMSG_SUBCOMMAND(skb->data); | |
382 | ||
383 | p = dma->sendbuf.dmabuf; | |
384 | ||
385 | if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) { | |
386 | u16 dlen = CAPIMSG_DATALEN(skb->data); | |
387 | _put_byte(&p, SEND_DATA_B3_REQ); | |
388 | _put_slice(&p, skb->data, len); | |
389 | _put_slice(&p, skb->data + len, dlen); | |
390 | } else { | |
391 | _put_byte(&p, SEND_MESSAGE); | |
392 | _put_slice(&p, skb->data, len); | |
393 | } | |
394 | txlen = (u8 *)p - (u8 *)dma->sendbuf.dmabuf; | |
395 | #ifdef CONFIG_B1DMA_DEBUG | |
396 | printk(KERN_DEBUG "tx: put msg len=%d\n", txlen); | |
397 | #endif | |
398 | } else { | |
399 | txlen = skb->len-2; | |
400 | #ifdef CONFIG_B1DMA_POLLDEBUG | |
401 | if (skb->data[2] == SEND_POLLACK) | |
402 | printk(KERN_INFO "%s: send ack\n", card->name); | |
403 | #endif | |
404 | #ifdef CONFIG_B1DMA_DEBUG | |
405 | printk(KERN_DEBUG "tx: put 0x%x len=%d\n", | |
406 | skb->data[2], txlen); | |
407 | #endif | |
408 | memcpy(dma->sendbuf.dmabuf, skb->data+2, skb->len-2); | |
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 | ||
422 | static 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 | ||
444 | static 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 | ||
454 | #ifdef CONFIG_B1DMA_DEBUG | |
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: | |
519 | #ifdef CONFIG_B1DMA_POLLDEBUG | |
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 | ||
577 | static 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); | |
605 | #ifdef CONFIG_B1DMA_DEBUG | |
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 | ||
632 | irqreturn_t b1dma_interrupt(int interrupt, void *devptr, struct pt_regs *regs) | |
633 | { | |
634 | avmcard *card = devptr; | |
635 | ||
636 | b1dma_handle_interrupt(card); | |
637 | return IRQ_HANDLED; | |
638 | } | |
639 | ||
640 | /* ------------------------------------------------------------- */ | |
641 | ||
642 | static 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 | ||
674 | static 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 | ||
697 | int 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 | ||
746 | void 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 | ||
763 | void 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 | ||
800 | void 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 | ||
828 | u16 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 | ||
848 | int 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 | ||
946 | EXPORT_SYMBOL(b1dma_reset); | |
947 | EXPORT_SYMBOL(t1pci_detect); | |
948 | EXPORT_SYMBOL(b1pciv4_detect); | |
949 | EXPORT_SYMBOL(b1dma_interrupt); | |
950 | ||
951 | EXPORT_SYMBOL(b1dma_load_firmware); | |
952 | EXPORT_SYMBOL(b1dma_reset_ctr); | |
953 | EXPORT_SYMBOL(b1dma_register_appl); | |
954 | EXPORT_SYMBOL(b1dma_release_appl); | |
955 | EXPORT_SYMBOL(b1dma_send_message); | |
956 | EXPORT_SYMBOL(b1dmactl_read_proc); | |
957 | ||
958 | int b1dma_init(void) | |
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 | ||
975 | void b1dma_exit(void) | |
976 | { | |
977 | } | |
978 | ||
979 | module_init(b1dma_init); | |
980 | module_exit(b1dma_exit); |