Commit | Line | Data |
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1da177e4 | 1 | /* $Id: b1dma.c,v 1.1.2.3 2004/02/10 01:07:12 keil Exp $ |
475be4d8 | 2 | * |
1da177e4 | 3 | * Common module for AVM B1 cards that support dma with AMCC |
475be4d8 | 4 | * |
1da177e4 | 5 | * Copyright 2000 by Carsten Paeth <calle@calle.de> |
475be4d8 | 6 | * |
1da177e4 LT |
7 | * This software may be used and distributed according to the terms |
8 | * of the GNU General Public License, incorporated herein by reference. | |
9 | * | |
10 | */ | |
11 | ||
1da177e4 LT |
12 | #include <linux/module.h> |
13 | #include <linux/kernel.h> | |
9a58a80a AD |
14 | #include <linux/proc_fs.h> |
15 | #include <linux/seq_file.h> | |
1da177e4 LT |
16 | #include <linux/skbuff.h> |
17 | #include <linux/delay.h> | |
18 | #include <linux/mm.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/ioport.h> | |
21 | #include <linux/capi.h> | |
22 | #include <linux/kernelcapi.h> | |
5a0e3ad6 | 23 | #include <linux/gfp.h> |
1da177e4 LT |
24 | #include <asm/io.h> |
25 | #include <linux/init.h> | |
26 | #include <asm/uaccess.h> | |
27 | #include <linux/netdevice.h> | |
28 | #include <linux/isdn/capilli.h> | |
29 | #include "avmcard.h" | |
30 | #include <linux/isdn/capicmd.h> | |
31 | #include <linux/isdn/capiutil.h> | |
32 | ||
33 | static char *revision = "$Revision: 1.1.2.3 $"; | |
34 | ||
26fb5c58 | 35 | #undef AVM_B1DMA_DEBUG |
1da177e4 LT |
36 | |
37 | /* ------------------------------------------------------------- */ | |
38 | ||
39 | MODULE_DESCRIPTION("CAPI4Linux: DMA support for active AVM cards"); | |
40 | MODULE_AUTHOR("Carsten Paeth"); | |
41 | MODULE_LICENSE("GPL"); | |
42 | ||
90ab5ee9 | 43 | static bool suppress_pollack = 0; |
8d3b33f6 | 44 | module_param(suppress_pollack, bool, 0); |
1da177e4 LT |
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--) { | |
475be4d8 | 113 | while (!b1dma_tx_empty(card->port) |
1da177e4 | 114 | && time_before(jiffies, stop)); |
475be4d8 | 115 | if (!b1dma_tx_empty(card->port)) |
1da177e4 | 116 | return -1; |
475be4d8 | 117 | t1outp(card->port, 0x01, *s++); |
1da177e4 LT |
118 | } |
119 | return 0; | |
120 | } | |
121 | ||
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--) { | |
475be4d8 | 127 | while (!b1dma_rx_full(card->port) |
1da177e4 | 128 | && time_before(jiffies, stop)); |
475be4d8 | 129 | if (!b1dma_rx_full(card->port)) |
1da177e4 | 130 | return -1; |
475be4d8 | 131 | *s++ = t1inp(card->port, 0x00); |
1da177e4 LT |
132 | } |
133 | return 0; | |
134 | } | |
135 | ||
136 | static int WriteReg(avmcard *card, u32 reg, u8 val) | |
137 | { | |
138 | u8 cmd = 0x00; | |
475be4d8 | 139 | if (b1dma_tolink(card, &cmd, 1) == 0 |
1da177e4 LT |
140 | && b1dma_tolink(card, ®, 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; | |
475be4d8 | 150 | if (b1dma_tolink(card, &cmd, 1) == 0 |
1da177e4 LT |
151 | && b1dma_tolink(card, ®, 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); | |
475be4d8 | 261 | if (b1dma_readl(card, AMCC_RXPTR) != 0xfffffffc |
1da177e4 LT |
262 | || b1dma_readl(card, AMCC_TXPTR) != 0xfffffffc) |
263 | return 2; | |
264 | ||
265 | b1dma_writel(card, 0x0, AMCC_RXPTR); | |
266 | b1dma_writel(card, 0x0, AMCC_TXPTR); | |
475be4d8 | 267 | if (b1dma_readl(card, AMCC_RXPTR) != 0x0 |
1da177e4 LT |
268 | || b1dma_readl(card, AMCC_TXPTR) != 0x0) |
269 | return 3; | |
270 | ||
271 | t1outp(card->port, 0x10, 0x00); | |
272 | t1outp(card->port, 0x07, 0x00); | |
475be4d8 | 273 | |
1da177e4 LT |
274 | t1outp(card->port, 0x02, 0x02); |
275 | t1outp(card->port, 0x03, 0x02); | |
276 | ||
475be4d8 | 277 | if ((t1inp(card->port, 0x02) & 0xFE) != 0x02 |
1da177e4 LT |
278 | || t1inp(card->port, 0x3) != 0x03) |
279 | return 4; | |
280 | ||
281 | t1outp(card->port, 0x02, 0x00); | |
282 | t1outp(card->port, 0x03, 0x00); | |
283 | ||
475be4d8 | 284 | if ((t1inp(card->port, 0x02) & 0xFE) != 0x00 |
1da177e4 LT |
285 | || t1inp(card->port, 0x3) != 0x01) |
286 | return 5; | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
291 | int t1pci_detect(avmcard *card) | |
292 | { | |
293 | int ret; | |
294 | ||
295 | if ((ret = b1dma_detect(card)) != 0) | |
296 | return ret; | |
475be4d8 | 297 | |
1da177e4 | 298 | /* Transputer test */ |
475be4d8 JP |
299 | |
300 | if (WriteReg(card, 0x80001000, 0x11) != 0 | |
1da177e4 LT |
301 | || WriteReg(card, 0x80101000, 0x22) != 0 |
302 | || WriteReg(card, 0x80201000, 0x33) != 0 | |
303 | || WriteReg(card, 0x80301000, 0x44) != 0) | |
304 | return 6; | |
305 | ||
475be4d8 | 306 | if (ReadReg(card, 0x80001000) != 0x11 |
1da177e4 LT |
307 | || ReadReg(card, 0x80101000) != 0x22 |
308 | || ReadReg(card, 0x80201000) != 0x33 | |
309 | || ReadReg(card, 0x80301000) != 0x44) | |
310 | return 7; | |
311 | ||
475be4d8 | 312 | if (WriteReg(card, 0x80001000, 0x55) != 0 |
1da177e4 LT |
313 | || WriteReg(card, 0x80101000, 0x66) != 0 |
314 | || WriteReg(card, 0x80201000, 0x77) != 0 | |
315 | || WriteReg(card, 0x80301000, 0x88) != 0) | |
316 | return 8; | |
317 | ||
475be4d8 | 318 | if (ReadReg(card, 0x80001000) != 0x55 |
1da177e4 LT |
319 | || ReadReg(card, 0x80101000) != 0x66 |
320 | || ReadReg(card, 0x80201000) != 0x77 | |
321 | || ReadReg(card, 0x80301000) != 0x88) | |
322 | return 9; | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
327 | int b1pciv4_detect(avmcard *card) | |
328 | { | |
329 | int ret, i; | |
330 | ||
331 | if ((ret = b1dma_detect(card)) != 0) | |
332 | return ret; | |
475be4d8 JP |
333 | |
334 | for (i = 0; i < 5; i++) { | |
1da177e4 LT |
335 | if (WriteReg(card, 0x80A00000, 0x21) != 0) |
336 | return 6; | |
337 | if ((ReadReg(card, 0x80A00000) & 0x01) != 0x01) | |
338 | return 7; | |
339 | } | |
475be4d8 | 340 | for (i = 0; i < 5; i++) { |
1da177e4 LT |
341 | if (WriteReg(card, 0x80A00000, 0x20) != 0) |
342 | return 8; | |
343 | if ((ReadReg(card, 0x80A00000) & 0x01) != 0x00) | |
344 | return 9; | |
345 | } | |
475be4d8 | 346 | |
1da177e4 LT |
347 | return 0; |
348 | } | |
349 | ||
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; | |
475be4d8 | 376 | |
1da177e4 LT |
377 | skb = skb_dequeue(&dma->send_queue); |
378 | ||
379 | len = CAPIMSG_LEN(skb->data); | |
380 | ||
381 | if (len) { | |
382 | cmd = CAPIMSG_COMMAND(skb->data); | |
383 | subcmd = CAPIMSG_SUBCOMMAND(skb->data); | |
384 | ||
385 | p = dma->sendbuf.dmabuf; | |
386 | ||
387 | if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) { | |
388 | u16 dlen = CAPIMSG_DATALEN(skb->data); | |
389 | _put_byte(&p, SEND_DATA_B3_REQ); | |
390 | _put_slice(&p, skb->data, len); | |
391 | _put_slice(&p, skb->data + len, dlen); | |
392 | } else { | |
393 | _put_byte(&p, SEND_MESSAGE); | |
394 | _put_slice(&p, skb->data, len); | |
395 | } | |
396 | txlen = (u8 *)p - (u8 *)dma->sendbuf.dmabuf; | |
26fb5c58 | 397 | #ifdef AVM_B1DMA_DEBUG |
1da177e4 LT |
398 | printk(KERN_DEBUG "tx: put msg len=%d\n", txlen); |
399 | #endif | |
400 | } else { | |
475be4d8 | 401 | txlen = skb->len - 2; |
26fb5c58 | 402 | #ifdef AVM_B1DMA_POLLDEBUG |
1da177e4 LT |
403 | if (skb->data[2] == SEND_POLLACK) |
404 | printk(KERN_INFO "%s: send ack\n", card->name); | |
405 | #endif | |
26fb5c58 | 406 | #ifdef AVM_B1DMA_DEBUG |
475be4d8 | 407 | printk(KERN_DEBUG "tx: put 0x%x len=%d\n", |
1da177e4 LT |
408 | skb->data[2], txlen); |
409 | #endif | |
d626f62b ACM |
410 | skb_copy_from_linear_data_offset(skb, 2, dma->sendbuf.dmabuf, |
411 | skb->len - 2); | |
1da177e4 LT |
412 | } |
413 | txlen = (txlen + 3) & ~3; | |
414 | ||
415 | b1dma_writel(card, dma->sendbuf.dmaaddr, AMCC_TXPTR); | |
416 | b1dma_writel(card, txlen, AMCC_TXLEN); | |
417 | ||
418 | card->csr |= EN_TX_TC_INT; | |
419 | ||
420 | dev_kfree_skb_any(skb); | |
421 | } | |
422 | ||
423 | /* ------------------------------------------------------------- */ | |
424 | ||
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", | |
475be4d8 | 433 | card->name); |
1da177e4 LT |
434 | return; |
435 | } | |
436 | p = skb->data; | |
437 | _put_byte(&p, 0); | |
438 | _put_byte(&p, 0); | |
439 | _put_byte(&p, SEND_POLLACK); | |
440 | skb_put(skb, (u8 *)p - (u8 *)skb->data); | |
441 | ||
442 | b1dma_queue_tx(card, skb); | |
443 | } | |
444 | ||
445 | /* ------------------------------------------------------------- */ | |
446 | ||
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; | |
475be4d8 | 453 | void *p = dma->recvbuf.dmabuf + 4; |
1da177e4 LT |
454 | u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize; |
455 | u8 b1cmd = _get_byte(&p); | |
456 | ||
26fb5c58 | 457 | #ifdef AVM_B1DMA_DEBUG |
1da177e4 LT |
458 | printk(KERN_DEBUG "rx: 0x%x %lu\n", b1cmd, (unsigned long)dma->recvlen); |
459 | #endif | |
475be4d8 | 460 | |
1da177e4 LT |
461 | switch (b1cmd) { |
462 | case RECEIVE_DATA_B3_IND: | |
463 | ||
464 | ApplId = (unsigned) _get_word(&p); | |
465 | MsgLen = _get_slice(&p, card->msgbuf); | |
466 | DataB3Len = _get_slice(&p, card->databuf); | |
467 | ||
468 | if (MsgLen < 30) { /* not CAPI 64Bit */ | |
475be4d8 | 469 | memset(card->msgbuf + MsgLen, 0, 30 - MsgLen); |
1da177e4 LT |
470 | MsgLen = 30; |
471 | CAPIMSG_SETLEN(card->msgbuf, 30); | |
472 | } | |
475be4d8 | 473 | if (!(skb = alloc_skb(DataB3Len + MsgLen, GFP_ATOMIC))) { |
1da177e4 | 474 | printk(KERN_ERR "%s: incoming packet dropped\n", |
475be4d8 | 475 | card->name); |
1da177e4 LT |
476 | } else { |
477 | memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen); | |
478 | memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len); | |
479 | capi_ctr_handle_message(ctrl, ApplId, skb); | |
480 | } | |
481 | break; | |
482 | ||
483 | case RECEIVE_MESSAGE: | |
484 | ||
485 | ApplId = (unsigned) _get_word(&p); | |
486 | MsgLen = _get_slice(&p, card->msgbuf); | |
487 | if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) { | |
488 | printk(KERN_ERR "%s: incoming packet dropped\n", | |
475be4d8 | 489 | card->name); |
1da177e4 LT |
490 | } else { |
491 | memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen); | |
1e9c7813 KK |
492 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_CONF) { |
493 | spin_lock(&card->lock); | |
1da177e4 | 494 | capilib_data_b3_conf(&cinfo->ncci_head, ApplId, |
475be4d8 JP |
495 | CAPIMSG_NCCI(skb->data), |
496 | CAPIMSG_MSGID(skb->data)); | |
1e9c7813 KK |
497 | spin_unlock(&card->lock); |
498 | } | |
1da177e4 LT |
499 | capi_ctr_handle_message(ctrl, ApplId, skb); |
500 | } | |
501 | break; | |
502 | ||
503 | case RECEIVE_NEW_NCCI: | |
504 | ||
505 | ApplId = _get_word(&p); | |
506 | NCCI = _get_word(&p); | |
507 | WindowSize = _get_word(&p); | |
1e9c7813 | 508 | spin_lock(&card->lock); |
1da177e4 | 509 | capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize); |
1e9c7813 | 510 | spin_unlock(&card->lock); |
1da177e4 LT |
511 | break; |
512 | ||
513 | case RECEIVE_FREE_NCCI: | |
514 | ||
515 | ApplId = _get_word(&p); | |
516 | NCCI = _get_word(&p); | |
517 | ||
1e9c7813 KK |
518 | if (NCCI != 0xffffffff) { |
519 | spin_lock(&card->lock); | |
1da177e4 | 520 | capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI); |
1e9c7813 KK |
521 | spin_unlock(&card->lock); |
522 | } | |
1da177e4 LT |
523 | break; |
524 | ||
525 | case RECEIVE_START: | |
26fb5c58 | 526 | #ifdef AVM_B1DMA_POLLDEBUG |
1da177e4 LT |
527 | printk(KERN_INFO "%s: receive poll\n", card->name); |
528 | #endif | |
529 | if (!suppress_pollack) | |
530 | queue_pollack(card); | |
531 | capi_ctr_resume_output(ctrl); | |
532 | break; | |
533 | ||
534 | case RECEIVE_STOP: | |
535 | capi_ctr_suspend_output(ctrl); | |
536 | break; | |
537 | ||
538 | case RECEIVE_INIT: | |
539 | ||
540 | cinfo->versionlen = _get_slice(&p, cinfo->versionbuf); | |
541 | b1_parse_version(cinfo); | |
542 | printk(KERN_INFO "%s: %s-card (%s) now active\n", | |
543 | card->name, | |
544 | cinfo->version[VER_CARDTYPE], | |
545 | cinfo->version[VER_DRIVER]); | |
546 | capi_ctr_ready(ctrl); | |
547 | break; | |
548 | ||
549 | case RECEIVE_TASK_READY: | |
550 | ApplId = (unsigned) _get_word(&p); | |
551 | MsgLen = _get_slice(&p, card->msgbuf); | |
552 | card->msgbuf[MsgLen] = 0; | |
475be4d8 JP |
553 | while (MsgLen > 0 |
554 | && (card->msgbuf[MsgLen - 1] == '\n' | |
555 | || card->msgbuf[MsgLen - 1] == '\r')) { | |
556 | card->msgbuf[MsgLen - 1] = 0; | |
1da177e4 LT |
557 | MsgLen--; |
558 | } | |
559 | printk(KERN_INFO "%s: task %d \"%s\" ready.\n", | |
475be4d8 | 560 | card->name, ApplId, card->msgbuf); |
1da177e4 LT |
561 | break; |
562 | ||
563 | case RECEIVE_DEBUGMSG: | |
564 | MsgLen = _get_slice(&p, card->msgbuf); | |
565 | card->msgbuf[MsgLen] = 0; | |
475be4d8 JP |
566 | while (MsgLen > 0 |
567 | && (card->msgbuf[MsgLen - 1] == '\n' | |
568 | || card->msgbuf[MsgLen - 1] == '\r')) { | |
569 | card->msgbuf[MsgLen - 1] = 0; | |
1da177e4 LT |
570 | MsgLen--; |
571 | } | |
572 | printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf); | |
573 | break; | |
574 | ||
575 | default: | |
576 | printk(KERN_ERR "%s: b1dma_interrupt: 0x%x ???\n", | |
475be4d8 | 577 | card->name, b1cmd); |
1da177e4 LT |
578 | return; |
579 | } | |
580 | } | |
581 | ||
582 | /* ------------------------------------------------------------- */ | |
583 | ||
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 | ||
475be4d8 | 597 | newcsr = card->csr | (status & ALL_INT); |
1da177e4 LT |
598 | if (status & TX_TC_INT) newcsr &= ~EN_TX_TC_INT; |
599 | if (status & RX_TC_INT) newcsr &= ~EN_RX_TC_INT; | |
600 | b1dma_writel(card, newcsr, AMCC_INTCSR); | |
601 | ||
602 | if ((status & RX_TC_INT) != 0) { | |
603 | struct avmcard_dmainfo *dma = card->dma; | |
604 | u32 rxlen; | |
475be4d8 JP |
605 | if (card->dma->recvlen == 0) { |
606 | rxlen = b1dma_readl(card, AMCC_RXLEN); | |
1da177e4 LT |
607 | if (rxlen == 0) { |
608 | dma->recvlen = *((u32 *)dma->recvbuf.dmabuf); | |
609 | rxlen = (dma->recvlen + 3) & ~3; | |
475be4d8 | 610 | b1dma_writel(card, dma->recvbuf.dmaaddr + 4, AMCC_RXPTR); |
1da177e4 | 611 | b1dma_writel(card, rxlen, AMCC_RXLEN); |
26fb5c58 | 612 | #ifdef AVM_B1DMA_DEBUG |
1da177e4 LT |
613 | } else { |
614 | printk(KERN_ERR "%s: rx not complete (%d).\n", | |
475be4d8 | 615 | card->name, rxlen); |
1da177e4 LT |
616 | #endif |
617 | } | |
618 | } else { | |
619 | spin_unlock(&card->lock); | |
620 | b1dma_handle_rx(card); | |
475be4d8 | 621 | dma->recvlen = 0; |
1da177e4 LT |
622 | spin_lock(&card->lock); |
623 | b1dma_writel(card, dma->recvbuf.dmaaddr, AMCC_RXPTR); | |
624 | b1dma_writel(card, 4, AMCC_RXLEN); | |
625 | } | |
626 | } | |
627 | ||
628 | if ((status & TX_TC_INT) != 0) { | |
629 | if (skb_queue_empty(&card->dma->send_queue)) | |
630 | card->csr &= ~EN_TX_TC_INT; | |
631 | else | |
632 | b1dma_dispatch_tx(card); | |
633 | } | |
634 | b1dma_writel(card, card->csr, AMCC_INTCSR); | |
635 | ||
636 | spin_unlock(&card->lock); | |
637 | } | |
638 | ||
7d12e780 | 639 | irqreturn_t b1dma_interrupt(int interrupt, void *devptr) |
1da177e4 LT |
640 | { |
641 | avmcard *card = devptr; | |
642 | ||
643 | b1dma_handle_interrupt(card); | |
644 | return IRQ_HANDLED; | |
645 | } | |
646 | ||
647 | /* ------------------------------------------------------------- */ | |
648 | ||
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", | |
475be4d8 | 662 | card->name); |
1da177e4 LT |
663 | return 0; |
664 | } | |
665 | b1_put_byte(base, SEND_POLLACK); | |
666 | for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) { | |
667 | if (b1_rx_full(base)) { | |
668 | if ((ans = b1_get_byte(base)) == RECEIVE_POLLDWORD) { | |
669 | return 1; | |
670 | } | |
671 | printk(KERN_ERR "%s: b1dma_loaded: got 0x%x, firmware not running in dword mode\n", card->name, ans); | |
672 | return 0; | |
673 | } | |
674 | } | |
675 | printk(KERN_ERR "%s: b1dma_loaded: firmware not running\n", card->name); | |
676 | return 0; | |
677 | } | |
678 | ||
679 | /* ------------------------------------------------------------- */ | |
680 | ||
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", | |
475be4d8 | 689 | card->name); |
1da177e4 LT |
690 | return; |
691 | } | |
692 | p = skb->data; | |
693 | _put_byte(&p, 0); | |
694 | _put_byte(&p, 0); | |
695 | _put_byte(&p, SEND_INIT); | |
696 | _put_word(&p, CAPI_MAXAPPL); | |
475be4d8 | 697 | _put_word(&p, AVM_NCCI_PER_CHANNEL * 30); |
1da177e4 LT |
698 | _put_word(&p, card->cardnr - 1); |
699 | skb_put(skb, (u8 *)p - (u8 *)skb->data); | |
700 | ||
701 | b1dma_queue_tx(card, skb); | |
702 | } | |
703 | ||
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", | |
475be4d8 | 715 | card->name); |
1da177e4 LT |
716 | return retval; |
717 | } | |
718 | ||
719 | if (data->configuration.len > 0 && data->configuration.data) { | |
720 | if ((retval = b1_load_config(card, &data->configuration))) { | |
721 | b1dma_reset(card); | |
722 | printk(KERN_ERR "%s: failed to load config!!\n", | |
475be4d8 | 723 | card->name); |
1da177e4 LT |
724 | return retval; |
725 | } | |
726 | } | |
727 | ||
728 | if (!b1dma_loaded(card)) { | |
729 | b1dma_reset(card); | |
730 | printk(KERN_ERR "%s: failed to load t4file.\n", card->name); | |
731 | return -EIO; | |
732 | } | |
733 | ||
734 | card->csr = AVM_FLAG; | |
735 | b1dma_writel(card, card->csr, AMCC_INTCSR); | |
475be4d8 JP |
736 | b1dma_writel(card, EN_A2P_TRANSFERS | EN_P2A_TRANSFERS | A2P_HI_PRIORITY | |
737 | P2A_HI_PRIORITY | RESET_A2P_FLAGS | RESET_P2A_FLAGS, | |
1da177e4 LT |
738 | AMCC_MCSR); |
739 | t1outp(card->port, 0x07, 0x30); | |
740 | t1outp(card->port, 0x10, 0xF0); | |
741 | ||
742 | card->dma->recvlen = 0; | |
743 | b1dma_writel(card, card->dma->recvbuf.dmaaddr, AMCC_RXPTR); | |
744 | b1dma_writel(card, 4, AMCC_RXLEN); | |
745 | card->csr |= EN_RX_TC_INT; | |
746 | b1dma_writel(card, card->csr, AMCC_INTCSR); | |
747 | ||
475be4d8 | 748 | b1dma_send_init(card); |
1da177e4 LT |
749 | |
750 | return 0; | |
751 | } | |
752 | ||
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); | |
475be4d8 | 760 | b1dma_reset(card); |
1da177e4 LT |
761 | |
762 | memset(cinfo->version, 0, sizeof(cinfo->version)); | |
763 | capilib_release(&cinfo->ncci_head); | |
1e9c7813 | 764 | spin_unlock_irqrestore(&card->lock, flags); |
4e329972 | 765 | capi_ctr_down(ctrl); |
1da177e4 LT |
766 | } |
767 | ||
768 | /* ------------------------------------------------------------- */ | |
769 | ||
770 | void b1dma_register_appl(struct capi_ctr *ctrl, | |
475be4d8 JP |
771 | u16 appl, |
772 | capi_register_params *rp) | |
1da177e4 LT |
773 | { |
774 | avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); | |
775 | avmcard *card = cinfo->card; | |
776 | struct sk_buff *skb; | |
777 | int want = rp->level3cnt; | |
778 | int nconn; | |
779 | void *p; | |
780 | ||
781 | if (want > 0) nconn = want; | |
782 | else nconn = ctrl->profile.nbchannel * -want; | |
783 | if (nconn == 0) nconn = ctrl->profile.nbchannel; | |
784 | ||
785 | skb = alloc_skb(23, GFP_ATOMIC); | |
786 | if (!skb) { | |
787 | printk(KERN_CRIT "%s: no memory, lost register appl.\n", | |
475be4d8 | 788 | card->name); |
1da177e4 LT |
789 | return; |
790 | } | |
791 | p = skb->data; | |
792 | _put_byte(&p, 0); | |
793 | _put_byte(&p, 0); | |
794 | _put_byte(&p, SEND_REGISTER); | |
795 | _put_word(&p, appl); | |
475be4d8 | 796 | _put_word(&p, 1024 * (nconn + 1)); |
1da177e4 LT |
797 | _put_word(&p, nconn); |
798 | _put_word(&p, rp->datablkcnt); | |
799 | _put_word(&p, rp->datablklen); | |
800 | skb_put(skb, (u8 *)p - (u8 *)skb->data); | |
801 | ||
802 | b1dma_queue_tx(card, skb); | |
803 | } | |
804 | ||
805 | /* ------------------------------------------------------------- */ | |
806 | ||
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; | |
1e9c7813 | 813 | unsigned long flags; |
1da177e4 | 814 | |
1e9c7813 | 815 | spin_lock_irqsave(&card->lock, flags); |
1da177e4 | 816 | capilib_release_appl(&cinfo->ncci_head, appl); |
1e9c7813 | 817 | spin_unlock_irqrestore(&card->lock, flags); |
1da177e4 LT |
818 | |
819 | skb = alloc_skb(7, GFP_ATOMIC); | |
820 | if (!skb) { | |
821 | printk(KERN_CRIT "%s: no memory, lost release appl.\n", | |
475be4d8 | 822 | card->name); |
1da177e4 LT |
823 | return; |
824 | } | |
825 | p = skb->data; | |
826 | _put_byte(&p, 0); | |
827 | _put_byte(&p, 0); | |
828 | _put_byte(&p, SEND_RELEASE); | |
829 | _put_word(&p, appl); | |
830 | ||
831 | skb_put(skb, (u8 *)p - (u8 *)skb->data); | |
832 | ||
833 | b1dma_queue_tx(card, skb); | |
834 | } | |
835 | ||
836 | /* ------------------------------------------------------------- */ | |
837 | ||
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 | ||
475be4d8 | 844 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { |
1e9c7813 KK |
845 | unsigned long flags; |
846 | spin_lock_irqsave(&card->lock, flags); | |
1da177e4 LT |
847 | retval = capilib_data_b3_req(&cinfo->ncci_head, |
848 | CAPIMSG_APPID(skb->data), | |
849 | CAPIMSG_NCCI(skb->data), | |
850 | CAPIMSG_MSGID(skb->data)); | |
1e9c7813 | 851 | spin_unlock_irqrestore(&card->lock, flags); |
1da177e4 | 852 | } |
475be4d8 | 853 | if (retval == CAPI_NOERROR) |
1da177e4 LT |
854 | b1dma_queue_tx(card, skb); |
855 | ||
856 | return retval; | |
857 | } | |
858 | ||
859 | /* ------------------------------------------------------------- */ | |
860 | ||
9a58a80a | 861 | static int b1dmactl_proc_show(struct seq_file *m, void *v) |
1da177e4 | 862 | { |
9a58a80a | 863 | struct capi_ctr *ctrl = m->private; |
1da177e4 LT |
864 | avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); |
865 | avmcard *card = cinfo->card; | |
866 | u8 flag; | |
1da177e4 LT |
867 | char *s; |
868 | u32 txoff, txlen, rxoff, rxlen, csr; | |
869 | unsigned long flags; | |
870 | ||
9a58a80a AD |
871 | seq_printf(m, "%-16s %s\n", "name", card->name); |
872 | seq_printf(m, "%-16s 0x%x\n", "io", card->port); | |
873 | seq_printf(m, "%-16s %d\n", "irq", card->irq); | |
874 | seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase); | |
1da177e4 LT |
875 | switch (card->cardtype) { |
876 | case avm_b1isa: s = "B1 ISA"; break; | |
877 | case avm_b1pci: s = "B1 PCI"; break; | |
878 | case avm_b1pcmcia: s = "B1 PCMCIA"; break; | |
879 | case avm_m1: s = "M1"; break; | |
880 | case avm_m2: s = "M2"; break; | |
881 | case avm_t1isa: s = "T1 ISA (HEMA)"; break; | |
882 | case avm_t1pci: s = "T1 PCI"; break; | |
883 | case avm_c4: s = "C4"; break; | |
884 | case avm_c2: s = "C2"; break; | |
885 | default: s = "???"; break; | |
886 | } | |
9a58a80a | 887 | seq_printf(m, "%-16s %s\n", "type", s); |
8e44b29d | 888 | if ((s = cinfo->version[VER_DRIVER]) != NULL) |
9a58a80a | 889 | seq_printf(m, "%-16s %s\n", "ver_driver", s); |
8e44b29d | 890 | if ((s = cinfo->version[VER_CARDTYPE]) != NULL) |
9a58a80a | 891 | seq_printf(m, "%-16s %s\n", "ver_cardtype", s); |
8e44b29d | 892 | if ((s = cinfo->version[VER_SERIAL]) != NULL) |
9a58a80a | 893 | seq_printf(m, "%-16s %s\n", "ver_serial", s); |
1da177e4 LT |
894 | |
895 | if (card->cardtype != avm_m1) { | |
475be4d8 JP |
896 | flag = ((u8 *)(ctrl->profile.manu))[3]; |
897 | if (flag) | |
9a58a80a | 898 | seq_printf(m, "%-16s%s%s%s%s%s%s%s\n", |
475be4d8 JP |
899 | "protocol", |
900 | (flag & 0x01) ? " DSS1" : "", | |
901 | (flag & 0x02) ? " CT1" : "", | |
902 | (flag & 0x04) ? " VN3" : "", | |
903 | (flag & 0x08) ? " NI1" : "", | |
904 | (flag & 0x10) ? " AUSTEL" : "", | |
905 | (flag & 0x20) ? " ESS" : "", | |
906 | (flag & 0x40) ? " 1TR6" : "" | |
907 | ); | |
1da177e4 LT |
908 | } |
909 | if (card->cardtype != avm_m1) { | |
475be4d8 | 910 | flag = ((u8 *)(ctrl->profile.manu))[5]; |
1da177e4 | 911 | if (flag) |
9a58a80a | 912 | seq_printf(m, "%-16s%s%s%s%s\n", |
475be4d8 JP |
913 | "linetype", |
914 | (flag & 0x01) ? " point to point" : "", | |
915 | (flag & 0x02) ? " point to multipoint" : "", | |
916 | (flag & 0x08) ? " leased line without D-channel" : "", | |
917 | (flag & 0x04) ? " leased line with D-channel" : "" | |
918 | ); | |
1da177e4 | 919 | } |
9a58a80a | 920 | seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname); |
1da177e4 LT |
921 | |
922 | ||
923 | spin_lock_irqsave(&card->lock, flags); | |
924 | ||
925 | txoff = (dma_addr_t)b1dma_readl(card, AMCC_TXPTR)-card->dma->sendbuf.dmaaddr; | |
926 | txlen = b1dma_readl(card, AMCC_TXLEN); | |
927 | ||
928 | rxoff = (dma_addr_t)b1dma_readl(card, AMCC_RXPTR)-card->dma->recvbuf.dmaaddr; | |
929 | rxlen = b1dma_readl(card, AMCC_RXLEN); | |
930 | ||
931 | csr = b1dma_readl(card, AMCC_INTCSR); | |
932 | ||
933 | spin_unlock_irqrestore(&card->lock, flags); | |
934 | ||
9a58a80a AD |
935 | seq_printf(m, "%-16s 0x%lx\n", "csr (cached)", (unsigned long)card->csr); |
936 | seq_printf(m, "%-16s 0x%lx\n", "csr", (unsigned long)csr); | |
937 | seq_printf(m, "%-16s %lu\n", "txoff", (unsigned long)txoff); | |
938 | seq_printf(m, "%-16s %lu\n", "txlen", (unsigned long)txlen); | |
939 | seq_printf(m, "%-16s %lu\n", "rxoff", (unsigned long)rxoff); | |
940 | seq_printf(m, "%-16s %lu\n", "rxlen", (unsigned long)rxlen); | |
941 | ||
942 | return 0; | |
943 | } | |
944 | ||
945 | static int b1dmactl_proc_open(struct inode *inode, struct file *file) | |
946 | { | |
947 | return single_open(file, b1dmactl_proc_show, PDE(inode)->data); | |
1da177e4 LT |
948 | } |
949 | ||
9a58a80a AD |
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 | ||
1da177e4 LT |
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); | |
1da177e4 | 971 | |
08e51533 | 972 | static int __init b1dma_init(void) |
1da177e4 LT |
973 | { |
974 | char *p; | |
975 | char rev[32]; | |
976 | ||
8e44b29d | 977 | if ((p = strchr(revision, ':')) != NULL && p[1]) { |
1da177e4 | 978 | strlcpy(rev, p + 2, sizeof(rev)); |
8e44b29d | 979 | if ((p = strchr(rev, '$')) != NULL && p > rev) |
475be4d8 | 980 | *(p - 1) = 0; |
1da177e4 LT |
981 | } else |
982 | strcpy(rev, "1.0"); | |
983 | ||
984 | printk(KERN_INFO "b1dma: revision %s\n", rev); | |
985 | ||
986 | return 0; | |
987 | } | |
988 | ||
08e51533 | 989 | static void __exit b1dma_exit(void) |
1da177e4 LT |
990 | { |
991 | } | |
992 | ||
993 | module_init(b1dma_init); | |
994 | module_exit(b1dma_exit); |