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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 | ||
30 | static char *revision = "$Revision: 1.1.2.3 $"; | |
31 | ||
26fb5c58 | 32 | #undef AVM_B1DMA_DEBUG |
1da177e4 LT |
33 | |
34 | /* ------------------------------------------------------------- */ | |
35 | ||
36 | MODULE_DESCRIPTION("CAPI4Linux: DMA support for active AVM cards"); | |
37 | MODULE_AUTHOR("Carsten Paeth"); | |
38 | MODULE_LICENSE("GPL"); | |
39 | ||
40 | static int suppress_pollack = 0; | |
8d3b33f6 | 41 | module_param(suppress_pollack, bool, 0); |
1da177e4 LT |
42 | |
43 | /* ------------------------------------------------------------- */ | |
44 | ||
45 | static 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 | ||
83 | static inline void b1dma_writel(avmcard *card, u32 value, int off) | |
84 | { | |
85 | writel(value, card->mbase + off); | |
86 | } | |
87 | ||
88 | static inline u32 b1dma_readl(avmcard *card, int off) | |
89 | { | |
90 | return readl(card->mbase + off); | |
91 | } | |
92 | ||
93 | /* ------------------------------------------------------------- */ | |
94 | ||
95 | static inline int b1dma_tx_empty(unsigned int port) | |
96 | { | |
97 | return inb(port + 0x03) & 0x1; | |
98 | } | |
99 | ||
100 | static inline int b1dma_rx_full(unsigned int port) | |
101 | { | |
102 | return inb(port + 0x02) & 0x1; | |
103 | } | |
104 | ||
105 | static 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 | ||
119 | static 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 | ||
133 | static 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, ®, 4) == 0) { | |
138 | u32 tmp = val; | |
139 | return b1dma_tolink(card, &tmp, 4); | |
140 | } | |
141 | return -1; | |
142 | } | |
143 | ||
144 | static u8 ReadReg(avmcard *card, u32 reg) | |
145 | { | |
146 | u8 cmd = 0x01; | |
147 | if ( b1dma_tolink(card, &cmd, 1) == 0 | |
148 | && b1dma_tolink(card, ®, 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 | ||
158 | static inline void _put_byte(void **pp, u8 val) | |
159 | { | |
160 | u8 *s = *pp; | |
161 | *s++ = val; | |
162 | *pp = s; | |
163 | } | |
164 | ||
165 | static 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 | ||
175 | static 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 | ||
183 | static 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 | ||
192 | static 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 | ||
204 | static 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 | ||
215 | void 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 | ||
239 | static 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 | ||
288 | int 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 | ||
324 | int 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 | ||
347 | static 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 | ||
365 | static 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 | ||
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 | ||
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); | |
1e9c7813 KK |
489 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_CONF) { |
490 | spin_lock(&card->lock); | |
1da177e4 | 491 | capilib_data_b3_conf(&cinfo->ncci_head, ApplId, |
1e9c7813 KK |
492 | CAPIMSG_NCCI(skb->data), |
493 | CAPIMSG_MSGID(skb->data)); | |
494 | spin_unlock(&card->lock); | |
495 | } | |
1da177e4 LT |
496 | capi_ctr_handle_message(ctrl, ApplId, skb); |
497 | } | |
498 | break; | |
499 | ||
500 | case RECEIVE_NEW_NCCI: | |
501 | ||
502 | ApplId = _get_word(&p); | |
503 | NCCI = _get_word(&p); | |
504 | WindowSize = _get_word(&p); | |
1e9c7813 | 505 | spin_lock(&card->lock); |
1da177e4 | 506 | capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize); |
1e9c7813 | 507 | spin_unlock(&card->lock); |
1da177e4 LT |
508 | break; |
509 | ||
510 | case RECEIVE_FREE_NCCI: | |
511 | ||
512 | ApplId = _get_word(&p); | |
513 | NCCI = _get_word(&p); | |
514 | ||
1e9c7813 KK |
515 | if (NCCI != 0xffffffff) { |
516 | spin_lock(&card->lock); | |
1da177e4 | 517 | capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI); |
1e9c7813 KK |
518 | spin_unlock(&card->lock); |
519 | } | |
1da177e4 LT |
520 | break; |
521 | ||
522 | case RECEIVE_START: | |
26fb5c58 | 523 | #ifdef AVM_B1DMA_POLLDEBUG |
1da177e4 LT |
524 | printk(KERN_INFO "%s: receive poll\n", card->name); |
525 | #endif | |
526 | if (!suppress_pollack) | |
527 | queue_pollack(card); | |
528 | capi_ctr_resume_output(ctrl); | |
529 | break; | |
530 | ||
531 | case RECEIVE_STOP: | |
532 | capi_ctr_suspend_output(ctrl); | |
533 | break; | |
534 | ||
535 | case RECEIVE_INIT: | |
536 | ||
537 | cinfo->versionlen = _get_slice(&p, cinfo->versionbuf); | |
538 | b1_parse_version(cinfo); | |
539 | printk(KERN_INFO "%s: %s-card (%s) now active\n", | |
540 | card->name, | |
541 | cinfo->version[VER_CARDTYPE], | |
542 | cinfo->version[VER_DRIVER]); | |
543 | capi_ctr_ready(ctrl); | |
544 | break; | |
545 | ||
546 | case RECEIVE_TASK_READY: | |
547 | ApplId = (unsigned) _get_word(&p); | |
548 | MsgLen = _get_slice(&p, card->msgbuf); | |
549 | card->msgbuf[MsgLen] = 0; | |
550 | while ( MsgLen > 0 | |
551 | && ( card->msgbuf[MsgLen-1] == '\n' | |
552 | || card->msgbuf[MsgLen-1] == '\r')) { | |
553 | card->msgbuf[MsgLen-1] = 0; | |
554 | MsgLen--; | |
555 | } | |
556 | printk(KERN_INFO "%s: task %d \"%s\" ready.\n", | |
557 | card->name, ApplId, card->msgbuf); | |
558 | break; | |
559 | ||
560 | case RECEIVE_DEBUGMSG: | |
561 | MsgLen = _get_slice(&p, card->msgbuf); | |
562 | card->msgbuf[MsgLen] = 0; | |
563 | while ( MsgLen > 0 | |
564 | && ( card->msgbuf[MsgLen-1] == '\n' | |
565 | || card->msgbuf[MsgLen-1] == '\r')) { | |
566 | card->msgbuf[MsgLen-1] = 0; | |
567 | MsgLen--; | |
568 | } | |
569 | printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf); | |
570 | break; | |
571 | ||
572 | default: | |
573 | printk(KERN_ERR "%s: b1dma_interrupt: 0x%x ???\n", | |
574 | card->name, b1cmd); | |
575 | return; | |
576 | } | |
577 | } | |
578 | ||
579 | /* ------------------------------------------------------------- */ | |
580 | ||
581 | static void b1dma_handle_interrupt(avmcard *card) | |
582 | { | |
583 | u32 status; | |
584 | u32 newcsr; | |
585 | ||
586 | spin_lock(&card->lock); | |
587 | ||
588 | status = b1dma_readl(card, AMCC_INTCSR); | |
589 | if ((status & ANY_S5933_INT) == 0) { | |
590 | spin_unlock(&card->lock); | |
591 | return; | |
592 | } | |
593 | ||
594 | newcsr = card->csr | (status & ALL_INT); | |
595 | if (status & TX_TC_INT) newcsr &= ~EN_TX_TC_INT; | |
596 | if (status & RX_TC_INT) newcsr &= ~EN_RX_TC_INT; | |
597 | b1dma_writel(card, newcsr, AMCC_INTCSR); | |
598 | ||
599 | if ((status & RX_TC_INT) != 0) { | |
600 | struct avmcard_dmainfo *dma = card->dma; | |
601 | u32 rxlen; | |
602 | if (card->dma->recvlen == 0) { | |
603 | rxlen = b1dma_readl(card, AMCC_RXLEN); | |
604 | if (rxlen == 0) { | |
605 | dma->recvlen = *((u32 *)dma->recvbuf.dmabuf); | |
606 | rxlen = (dma->recvlen + 3) & ~3; | |
607 | b1dma_writel(card, dma->recvbuf.dmaaddr+4, AMCC_RXPTR); | |
608 | b1dma_writel(card, rxlen, AMCC_RXLEN); | |
26fb5c58 | 609 | #ifdef AVM_B1DMA_DEBUG |
1da177e4 LT |
610 | } else { |
611 | printk(KERN_ERR "%s: rx not complete (%d).\n", | |
612 | card->name, rxlen); | |
613 | #endif | |
614 | } | |
615 | } else { | |
616 | spin_unlock(&card->lock); | |
617 | b1dma_handle_rx(card); | |
618 | dma->recvlen = 0; | |
619 | spin_lock(&card->lock); | |
620 | b1dma_writel(card, dma->recvbuf.dmaaddr, AMCC_RXPTR); | |
621 | b1dma_writel(card, 4, AMCC_RXLEN); | |
622 | } | |
623 | } | |
624 | ||
625 | if ((status & TX_TC_INT) != 0) { | |
626 | if (skb_queue_empty(&card->dma->send_queue)) | |
627 | card->csr &= ~EN_TX_TC_INT; | |
628 | else | |
629 | b1dma_dispatch_tx(card); | |
630 | } | |
631 | b1dma_writel(card, card->csr, AMCC_INTCSR); | |
632 | ||
633 | spin_unlock(&card->lock); | |
634 | } | |
635 | ||
7d12e780 | 636 | irqreturn_t b1dma_interrupt(int interrupt, void *devptr) |
1da177e4 LT |
637 | { |
638 | avmcard *card = devptr; | |
639 | ||
640 | b1dma_handle_interrupt(card); | |
641 | return IRQ_HANDLED; | |
642 | } | |
643 | ||
644 | /* ------------------------------------------------------------- */ | |
645 | ||
646 | static int b1dma_loaded(avmcard *card) | |
647 | { | |
648 | unsigned long stop; | |
649 | unsigned char ans; | |
650 | unsigned long tout = 2; | |
651 | unsigned int base = card->port; | |
652 | ||
653 | for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) { | |
654 | if (b1_tx_empty(base)) | |
655 | break; | |
656 | } | |
657 | if (!b1_tx_empty(base)) { | |
658 | printk(KERN_ERR "%s: b1dma_loaded: tx err, corrupted t4 file ?\n", | |
659 | card->name); | |
660 | return 0; | |
661 | } | |
662 | b1_put_byte(base, SEND_POLLACK); | |
663 | for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) { | |
664 | if (b1_rx_full(base)) { | |
665 | if ((ans = b1_get_byte(base)) == RECEIVE_POLLDWORD) { | |
666 | return 1; | |
667 | } | |
668 | printk(KERN_ERR "%s: b1dma_loaded: got 0x%x, firmware not running in dword mode\n", card->name, ans); | |
669 | return 0; | |
670 | } | |
671 | } | |
672 | printk(KERN_ERR "%s: b1dma_loaded: firmware not running\n", card->name); | |
673 | return 0; | |
674 | } | |
675 | ||
676 | /* ------------------------------------------------------------- */ | |
677 | ||
678 | static void b1dma_send_init(avmcard *card) | |
679 | { | |
680 | struct sk_buff *skb; | |
681 | void *p; | |
682 | ||
683 | skb = alloc_skb(15, GFP_ATOMIC); | |
684 | if (!skb) { | |
685 | printk(KERN_CRIT "%s: no memory, lost register appl.\n", | |
686 | card->name); | |
687 | return; | |
688 | } | |
689 | p = skb->data; | |
690 | _put_byte(&p, 0); | |
691 | _put_byte(&p, 0); | |
692 | _put_byte(&p, SEND_INIT); | |
693 | _put_word(&p, CAPI_MAXAPPL); | |
694 | _put_word(&p, AVM_NCCI_PER_CHANNEL*30); | |
695 | _put_word(&p, card->cardnr - 1); | |
696 | skb_put(skb, (u8 *)p - (u8 *)skb->data); | |
697 | ||
698 | b1dma_queue_tx(card, skb); | |
699 | } | |
700 | ||
701 | int b1dma_load_firmware(struct capi_ctr *ctrl, capiloaddata *data) | |
702 | { | |
703 | avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); | |
704 | avmcard *card = cinfo->card; | |
705 | int retval; | |
706 | ||
707 | b1dma_reset(card); | |
708 | ||
709 | if ((retval = b1_load_t4file(card, &data->firmware))) { | |
710 | b1dma_reset(card); | |
711 | printk(KERN_ERR "%s: failed to load t4file!!\n", | |
712 | card->name); | |
713 | return retval; | |
714 | } | |
715 | ||
716 | if (data->configuration.len > 0 && data->configuration.data) { | |
717 | if ((retval = b1_load_config(card, &data->configuration))) { | |
718 | b1dma_reset(card); | |
719 | printk(KERN_ERR "%s: failed to load config!!\n", | |
720 | card->name); | |
721 | return retval; | |
722 | } | |
723 | } | |
724 | ||
725 | if (!b1dma_loaded(card)) { | |
726 | b1dma_reset(card); | |
727 | printk(KERN_ERR "%s: failed to load t4file.\n", card->name); | |
728 | return -EIO; | |
729 | } | |
730 | ||
731 | card->csr = AVM_FLAG; | |
732 | b1dma_writel(card, card->csr, AMCC_INTCSR); | |
733 | b1dma_writel(card, EN_A2P_TRANSFERS|EN_P2A_TRANSFERS|A2P_HI_PRIORITY| | |
734 | P2A_HI_PRIORITY|RESET_A2P_FLAGS|RESET_P2A_FLAGS, | |
735 | AMCC_MCSR); | |
736 | t1outp(card->port, 0x07, 0x30); | |
737 | t1outp(card->port, 0x10, 0xF0); | |
738 | ||
739 | card->dma->recvlen = 0; | |
740 | b1dma_writel(card, card->dma->recvbuf.dmaaddr, AMCC_RXPTR); | |
741 | b1dma_writel(card, 4, AMCC_RXLEN); | |
742 | card->csr |= EN_RX_TC_INT; | |
743 | b1dma_writel(card, card->csr, AMCC_INTCSR); | |
744 | ||
745 | b1dma_send_init(card); | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | void b1dma_reset_ctr(struct capi_ctr *ctrl) | |
751 | { | |
752 | avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); | |
753 | avmcard *card = cinfo->card; | |
754 | unsigned long flags; | |
755 | ||
756 | spin_lock_irqsave(&card->lock, flags); | |
757 | b1dma_reset(card); | |
1da177e4 LT |
758 | |
759 | memset(cinfo->version, 0, sizeof(cinfo->version)); | |
760 | capilib_release(&cinfo->ncci_head); | |
1e9c7813 | 761 | spin_unlock_irqrestore(&card->lock, flags); |
1da177e4 LT |
762 | capi_ctr_reseted(ctrl); |
763 | } | |
764 | ||
765 | /* ------------------------------------------------------------- */ | |
766 | ||
767 | void b1dma_register_appl(struct capi_ctr *ctrl, | |
768 | u16 appl, | |
769 | capi_register_params *rp) | |
770 | { | |
771 | avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); | |
772 | avmcard *card = cinfo->card; | |
773 | struct sk_buff *skb; | |
774 | int want = rp->level3cnt; | |
775 | int nconn; | |
776 | void *p; | |
777 | ||
778 | if (want > 0) nconn = want; | |
779 | else nconn = ctrl->profile.nbchannel * -want; | |
780 | if (nconn == 0) nconn = ctrl->profile.nbchannel; | |
781 | ||
782 | skb = alloc_skb(23, GFP_ATOMIC); | |
783 | if (!skb) { | |
784 | printk(KERN_CRIT "%s: no memory, lost register appl.\n", | |
785 | card->name); | |
786 | return; | |
787 | } | |
788 | p = skb->data; | |
789 | _put_byte(&p, 0); | |
790 | _put_byte(&p, 0); | |
791 | _put_byte(&p, SEND_REGISTER); | |
792 | _put_word(&p, appl); | |
793 | _put_word(&p, 1024 * (nconn+1)); | |
794 | _put_word(&p, nconn); | |
795 | _put_word(&p, rp->datablkcnt); | |
796 | _put_word(&p, rp->datablklen); | |
797 | skb_put(skb, (u8 *)p - (u8 *)skb->data); | |
798 | ||
799 | b1dma_queue_tx(card, skb); | |
800 | } | |
801 | ||
802 | /* ------------------------------------------------------------- */ | |
803 | ||
804 | void b1dma_release_appl(struct capi_ctr *ctrl, u16 appl) | |
805 | { | |
806 | avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); | |
807 | avmcard *card = cinfo->card; | |
808 | struct sk_buff *skb; | |
809 | void *p; | |
1e9c7813 | 810 | unsigned long flags; |
1da177e4 | 811 | |
1e9c7813 | 812 | spin_lock_irqsave(&card->lock, flags); |
1da177e4 | 813 | capilib_release_appl(&cinfo->ncci_head, appl); |
1e9c7813 | 814 | spin_unlock_irqrestore(&card->lock, flags); |
1da177e4 LT |
815 | |
816 | skb = alloc_skb(7, GFP_ATOMIC); | |
817 | if (!skb) { | |
818 | printk(KERN_CRIT "%s: no memory, lost release appl.\n", | |
819 | card->name); | |
820 | return; | |
821 | } | |
822 | p = skb->data; | |
823 | _put_byte(&p, 0); | |
824 | _put_byte(&p, 0); | |
825 | _put_byte(&p, SEND_RELEASE); | |
826 | _put_word(&p, appl); | |
827 | ||
828 | skb_put(skb, (u8 *)p - (u8 *)skb->data); | |
829 | ||
830 | b1dma_queue_tx(card, skb); | |
831 | } | |
832 | ||
833 | /* ------------------------------------------------------------- */ | |
834 | ||
835 | u16 b1dma_send_message(struct capi_ctr *ctrl, struct sk_buff *skb) | |
836 | { | |
837 | avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); | |
838 | avmcard *card = cinfo->card; | |
839 | u16 retval = CAPI_NOERROR; | |
840 | ||
841 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { | |
1e9c7813 KK |
842 | unsigned long flags; |
843 | spin_lock_irqsave(&card->lock, flags); | |
1da177e4 LT |
844 | retval = capilib_data_b3_req(&cinfo->ncci_head, |
845 | CAPIMSG_APPID(skb->data), | |
846 | CAPIMSG_NCCI(skb->data), | |
847 | CAPIMSG_MSGID(skb->data)); | |
1e9c7813 | 848 | spin_unlock_irqrestore(&card->lock, flags); |
1da177e4 LT |
849 | } |
850 | if (retval == CAPI_NOERROR) | |
851 | b1dma_queue_tx(card, skb); | |
852 | ||
853 | return retval; | |
854 | } | |
855 | ||
856 | /* ------------------------------------------------------------- */ | |
857 | ||
858 | int b1dmactl_read_proc(char *page, char **start, off_t off, | |
859 | int count, int *eof, struct capi_ctr *ctrl) | |
860 | { | |
861 | avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); | |
862 | avmcard *card = cinfo->card; | |
863 | u8 flag; | |
864 | int len = 0; | |
865 | char *s; | |
866 | u32 txoff, txlen, rxoff, rxlen, csr; | |
867 | unsigned long flags; | |
868 | ||
869 | len += sprintf(page+len, "%-16s %s\n", "name", card->name); | |
870 | len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port); | |
871 | len += sprintf(page+len, "%-16s %d\n", "irq", card->irq); | |
872 | len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase); | |
873 | switch (card->cardtype) { | |
874 | case avm_b1isa: s = "B1 ISA"; break; | |
875 | case avm_b1pci: s = "B1 PCI"; break; | |
876 | case avm_b1pcmcia: s = "B1 PCMCIA"; break; | |
877 | case avm_m1: s = "M1"; break; | |
878 | case avm_m2: s = "M2"; break; | |
879 | case avm_t1isa: s = "T1 ISA (HEMA)"; break; | |
880 | case avm_t1pci: s = "T1 PCI"; break; | |
881 | case avm_c4: s = "C4"; break; | |
882 | case avm_c2: s = "C2"; break; | |
883 | default: s = "???"; break; | |
884 | } | |
885 | len += sprintf(page+len, "%-16s %s\n", "type", s); | |
8e44b29d | 886 | if ((s = cinfo->version[VER_DRIVER]) != NULL) |
1da177e4 | 887 | len += sprintf(page+len, "%-16s %s\n", "ver_driver", s); |
8e44b29d | 888 | if ((s = cinfo->version[VER_CARDTYPE]) != NULL) |
1da177e4 | 889 | len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s); |
8e44b29d | 890 | if ((s = cinfo->version[VER_SERIAL]) != NULL) |
1da177e4 LT |
891 | len += sprintf(page+len, "%-16s %s\n", "ver_serial", s); |
892 | ||
893 | if (card->cardtype != avm_m1) { | |
894 | flag = ((u8 *)(ctrl->profile.manu))[3]; | |
895 | if (flag) | |
896 | len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n", | |
897 | "protocol", | |
898 | (flag & 0x01) ? " DSS1" : "", | |
899 | (flag & 0x02) ? " CT1" : "", | |
900 | (flag & 0x04) ? " VN3" : "", | |
901 | (flag & 0x08) ? " NI1" : "", | |
902 | (flag & 0x10) ? " AUSTEL" : "", | |
903 | (flag & 0x20) ? " ESS" : "", | |
904 | (flag & 0x40) ? " 1TR6" : "" | |
905 | ); | |
906 | } | |
907 | if (card->cardtype != avm_m1) { | |
908 | flag = ((u8 *)(ctrl->profile.manu))[5]; | |
909 | if (flag) | |
910 | len += sprintf(page+len, "%-16s%s%s%s%s\n", | |
911 | "linetype", | |
912 | (flag & 0x01) ? " point to point" : "", | |
913 | (flag & 0x02) ? " point to multipoint" : "", | |
914 | (flag & 0x08) ? " leased line without D-channel" : "", | |
915 | (flag & 0x04) ? " leased line with D-channel" : "" | |
916 | ); | |
917 | } | |
918 | len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname); | |
919 | ||
920 | ||
921 | spin_lock_irqsave(&card->lock, flags); | |
922 | ||
923 | txoff = (dma_addr_t)b1dma_readl(card, AMCC_TXPTR)-card->dma->sendbuf.dmaaddr; | |
924 | txlen = b1dma_readl(card, AMCC_TXLEN); | |
925 | ||
926 | rxoff = (dma_addr_t)b1dma_readl(card, AMCC_RXPTR)-card->dma->recvbuf.dmaaddr; | |
927 | rxlen = b1dma_readl(card, AMCC_RXLEN); | |
928 | ||
929 | csr = b1dma_readl(card, AMCC_INTCSR); | |
930 | ||
931 | spin_unlock_irqrestore(&card->lock, flags); | |
932 | ||
933 | len += sprintf(page+len, "%-16s 0x%lx\n", | |
934 | "csr (cached)", (unsigned long)card->csr); | |
935 | len += sprintf(page+len, "%-16s 0x%lx\n", | |
936 | "csr", (unsigned long)csr); | |
937 | len += sprintf(page+len, "%-16s %lu\n", | |
938 | "txoff", (unsigned long)txoff); | |
939 | len += sprintf(page+len, "%-16s %lu\n", | |
940 | "txlen", (unsigned long)txlen); | |
941 | len += sprintf(page+len, "%-16s %lu\n", | |
942 | "rxoff", (unsigned long)rxoff); | |
943 | len += sprintf(page+len, "%-16s %lu\n", | |
944 | "rxlen", (unsigned long)rxlen); | |
945 | ||
946 | if (off+count >= len) | |
947 | *eof = 1; | |
948 | if (len < off) | |
949 | return 0; | |
950 | *start = page + off; | |
951 | return ((count < len-off) ? count : len-off); | |
952 | } | |
953 | ||
954 | /* ------------------------------------------------------------- */ | |
955 | ||
956 | EXPORT_SYMBOL(b1dma_reset); | |
957 | EXPORT_SYMBOL(t1pci_detect); | |
958 | EXPORT_SYMBOL(b1pciv4_detect); | |
959 | EXPORT_SYMBOL(b1dma_interrupt); | |
960 | ||
961 | EXPORT_SYMBOL(b1dma_load_firmware); | |
962 | EXPORT_SYMBOL(b1dma_reset_ctr); | |
963 | EXPORT_SYMBOL(b1dma_register_appl); | |
964 | EXPORT_SYMBOL(b1dma_release_appl); | |
965 | EXPORT_SYMBOL(b1dma_send_message); | |
966 | EXPORT_SYMBOL(b1dmactl_read_proc); | |
967 | ||
08e51533 | 968 | static int __init b1dma_init(void) |
1da177e4 LT |
969 | { |
970 | char *p; | |
971 | char rev[32]; | |
972 | ||
8e44b29d | 973 | if ((p = strchr(revision, ':')) != NULL && p[1]) { |
1da177e4 | 974 | strlcpy(rev, p + 2, sizeof(rev)); |
8e44b29d | 975 | if ((p = strchr(rev, '$')) != NULL && p > rev) |
1da177e4 LT |
976 | *(p-1) = 0; |
977 | } else | |
978 | strcpy(rev, "1.0"); | |
979 | ||
980 | printk(KERN_INFO "b1dma: revision %s\n", rev); | |
981 | ||
982 | return 0; | |
983 | } | |
984 | ||
08e51533 | 985 | static void __exit b1dma_exit(void) |
1da177e4 LT |
986 | { |
987 | } | |
988 | ||
989 | module_init(b1dma_init); | |
990 | module_exit(b1dma_exit); |