Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Driver for Digigram miXart soundcards | |
3 | * | |
4 | * low level interface with interrupt handling and mail box implementation | |
5 | * | |
6 | * Copyright (c) 2003 by Digigram <alsa@digigram.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | ||
1da177e4 | 23 | #include <linux/interrupt.h> |
62932df8 | 24 | #include <linux/mutex.h> |
6414e35d | 25 | #include <linux/pci.h> |
62932df8 | 26 | |
1da177e4 LT |
27 | #include <asm/io.h> |
28 | #include <sound/core.h> | |
29 | #include "mixart.h" | |
30 | #include "mixart_hwdep.h" | |
31 | #include "mixart_core.h" | |
32 | ||
33 | ||
34 | #define MSG_TIMEOUT_JIFFIES (400 * HZ) / 1000 /* 400 ms */ | |
35 | ||
36 | #define MSG_DESCRIPTOR_SIZE 0x24 | |
37 | #define MSG_HEADER_SIZE (MSG_DESCRIPTOR_SIZE + 4) | |
38 | ||
39 | #define MSG_DEFAULT_SIZE 512 | |
40 | ||
41 | #define MSG_TYPE_MASK 0x00000003 /* mask for following types */ | |
42 | #define MSG_TYPE_NOTIFY 0 /* embedded -> driver (only notification, do not get_msg() !) */ | |
43 | #define MSG_TYPE_COMMAND 1 /* driver <-> embedded (a command has no answer) */ | |
44 | #define MSG_TYPE_REQUEST 2 /* driver -> embedded (request will get an answer back) */ | |
45 | #define MSG_TYPE_ANSWER 3 /* embedded -> driver */ | |
46 | #define MSG_CANCEL_NOTIFY_MASK 0x80000000 /* this bit is set for a notification that has been canceled */ | |
47 | ||
48 | ||
67b48b88 | 49 | static int retrieve_msg_frame(struct mixart_mgr *mgr, u32 *msg_frame) |
1da177e4 LT |
50 | { |
51 | /* read the message frame fifo */ | |
52 | u32 headptr, tailptr; | |
53 | ||
54 | tailptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL)); | |
55 | headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_HEAD)); | |
56 | ||
57 | if (tailptr == headptr) | |
58 | return 0; /* no message posted */ | |
59 | ||
da3cec35 TI |
60 | if (tailptr < MSG_OUTBOUND_POST_STACK) |
61 | return 0; /* error */ | |
62 | if (tailptr >= MSG_OUTBOUND_POST_STACK + MSG_BOUND_STACK_SIZE) | |
63 | return 0; /* error */ | |
1da177e4 LT |
64 | |
65 | *msg_frame = readl_be(MIXART_MEM(mgr, tailptr)); | |
66 | ||
67 | /* increment the tail index */ | |
68 | tailptr += 4; | |
69 | if( tailptr >= (MSG_OUTBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) ) | |
70 | tailptr = MSG_OUTBOUND_POST_STACK; | |
71 | writel_be(tailptr, MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL)); | |
72 | ||
73 | return 1; | |
74 | } | |
75 | ||
67b48b88 TI |
76 | static int get_msg(struct mixart_mgr *mgr, struct mixart_msg *resp, |
77 | u32 msg_frame_address ) | |
1da177e4 | 78 | { |
1da177e4 LT |
79 | u32 headptr; |
80 | u32 size; | |
81 | int err; | |
82 | #ifndef __BIG_ENDIAN | |
83 | unsigned int i; | |
84 | #endif | |
85 | ||
8d3a8b5c | 86 | mutex_lock(&mgr->msg_lock); |
1da177e4 LT |
87 | err = 0; |
88 | ||
89 | /* copy message descriptor from miXart to driver */ | |
90 | size = readl_be(MIXART_MEM(mgr, msg_frame_address)); /* size of descriptor + response */ | |
91 | resp->message_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 4)); /* dwMessageID */ | |
92 | resp->uid.object_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 8)); /* uidDest */ | |
93 | resp->uid.desc = readl_be(MIXART_MEM(mgr, msg_frame_address + 12)); /* */ | |
94 | ||
95 | if( (size < MSG_DESCRIPTOR_SIZE) || (resp->size < (size - MSG_DESCRIPTOR_SIZE))) { | |
96 | err = -EINVAL; | |
6414e35d TI |
97 | dev_err(&mgr->pci->dev, |
98 | "problem with response size = %d\n", size); | |
1da177e4 LT |
99 | goto _clean_exit; |
100 | } | |
101 | size -= MSG_DESCRIPTOR_SIZE; | |
102 | ||
103 | memcpy_fromio(resp->data, MIXART_MEM(mgr, msg_frame_address + MSG_HEADER_SIZE ), size); | |
104 | resp->size = size; | |
105 | ||
106 | /* swap if necessary */ | |
107 | #ifndef __BIG_ENDIAN | |
108 | size /= 4; /* u32 size */ | |
109 | for(i=0; i < size; i++) { | |
110 | ((u32*)resp->data)[i] = be32_to_cpu(((u32*)resp->data)[i]); | |
111 | } | |
112 | #endif | |
113 | ||
114 | /* | |
115 | * free message frame address | |
116 | */ | |
117 | headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD)); | |
118 | ||
119 | if( (headptr < MSG_OUTBOUND_FREE_STACK) || ( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) { | |
120 | err = -EINVAL; | |
121 | goto _clean_exit; | |
122 | } | |
123 | ||
124 | /* give address back to outbound fifo */ | |
125 | writel_be(msg_frame_address, MIXART_MEM(mgr, headptr)); | |
126 | ||
127 | /* increment the outbound free head */ | |
128 | headptr += 4; | |
129 | if( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) ) | |
130 | headptr = MSG_OUTBOUND_FREE_STACK; | |
131 | ||
132 | writel_be(headptr, MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD)); | |
133 | ||
134 | _clean_exit: | |
8d3a8b5c | 135 | mutex_unlock(&mgr->msg_lock); |
1da177e4 LT |
136 | |
137 | return err; | |
138 | } | |
139 | ||
140 | ||
141 | /* | |
142 | * send a message to miXart. return: the msg_frame used for this message | |
143 | */ | |
144 | /* call with mgr->msg_lock held! */ | |
67b48b88 TI |
145 | static int send_msg( struct mixart_mgr *mgr, |
146 | struct mixart_msg *msg, | |
1da177e4 LT |
147 | int max_answersize, |
148 | int mark_pending, | |
149 | u32 *msg_event) | |
150 | { | |
151 | u32 headptr, tailptr; | |
152 | u32 msg_frame_address; | |
330fb10d | 153 | int i; |
1da177e4 | 154 | |
da3cec35 TI |
155 | if (snd_BUG_ON(msg->size % 4)) |
156 | return -EINVAL; | |
1da177e4 | 157 | |
1da177e4 LT |
158 | /* get message frame address */ |
159 | tailptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL)); | |
160 | headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_HEAD)); | |
161 | ||
162 | if (tailptr == headptr) { | |
6414e35d | 163 | dev_err(&mgr->pci->dev, "error: no message frame available\n"); |
1da177e4 LT |
164 | return -EBUSY; |
165 | } | |
166 | ||
167 | if( (tailptr < MSG_INBOUND_FREE_STACK) || (tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) { | |
168 | return -EINVAL; | |
169 | } | |
170 | ||
171 | msg_frame_address = readl_be(MIXART_MEM(mgr, tailptr)); | |
172 | writel(0, MIXART_MEM(mgr, tailptr)); /* set address to zero on this fifo position */ | |
173 | ||
174 | /* increment the inbound free tail */ | |
175 | tailptr += 4; | |
176 | if( tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) ) | |
177 | tailptr = MSG_INBOUND_FREE_STACK; | |
178 | ||
179 | writel_be(tailptr, MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL)); | |
180 | ||
181 | /* TODO : use memcpy_toio() with intermediate buffer to copy the message */ | |
182 | ||
183 | /* copy message descriptor to card memory */ | |
184 | writel_be( msg->size + MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address) ); /* size of descriptor + request */ | |
185 | writel_be( msg->message_id , MIXART_MEM(mgr, msg_frame_address + 4) ); /* dwMessageID */ | |
186 | writel_be( msg->uid.object_id, MIXART_MEM(mgr, msg_frame_address + 8) ); /* uidDest */ | |
187 | writel_be( msg->uid.desc, MIXART_MEM(mgr, msg_frame_address + 12) ); /* */ | |
188 | writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 16) ); /* SizeHeader */ | |
189 | writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 20) ); /* OffsetDLL_T16 */ | |
190 | writel_be( msg->size, MIXART_MEM(mgr, msg_frame_address + 24) ); /* SizeDLL_T16 */ | |
191 | writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 28) ); /* OffsetDLL_DRV */ | |
192 | writel_be( 0, MIXART_MEM(mgr, msg_frame_address + 32) ); /* SizeDLL_DRV */ | |
193 | writel_be( MSG_DESCRIPTOR_SIZE + max_answersize, MIXART_MEM(mgr, msg_frame_address + 36) ); /* dwExpectedAnswerSize */ | |
194 | ||
195 | /* copy message data to card memory */ | |
196 | for( i=0; i < msg->size; i+=4 ) { | |
197 | writel_be( *(u32*)(msg->data + i), MIXART_MEM(mgr, MSG_HEADER_SIZE + msg_frame_address + i) ); | |
198 | } | |
199 | ||
200 | if( mark_pending ) { | |
201 | if( *msg_event ) { | |
202 | /* the pending event is the notification we wait for ! */ | |
203 | mgr->pending_event = *msg_event; | |
204 | } | |
205 | else { | |
206 | /* the pending event is the answer we wait for (same address than the request)! */ | |
207 | mgr->pending_event = msg_frame_address; | |
208 | ||
209 | /* copy address back to caller */ | |
210 | *msg_event = msg_frame_address; | |
211 | } | |
212 | } | |
213 | ||
214 | /* mark the frame as a request (will have an answer) */ | |
215 | msg_frame_address |= MSG_TYPE_REQUEST; | |
216 | ||
217 | /* post the frame */ | |
218 | headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD)); | |
219 | ||
220 | if( (headptr < MSG_INBOUND_POST_STACK) || (headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE))) { | |
221 | return -EINVAL; | |
222 | } | |
223 | ||
224 | writel_be(msg_frame_address, MIXART_MEM(mgr, headptr)); | |
225 | ||
226 | /* increment the inbound post head */ | |
227 | headptr += 4; | |
228 | if( headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) ) | |
229 | headptr = MSG_INBOUND_POST_STACK; | |
230 | ||
231 | writel_be(headptr, MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD)); | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
236 | ||
67b48b88 | 237 | int snd_mixart_send_msg(struct mixart_mgr *mgr, struct mixart_msg *request, int max_resp_size, void *resp_data) |
1da177e4 | 238 | { |
67b48b88 | 239 | struct mixart_msg resp; |
1da177e4 LT |
240 | u32 msg_frame = 0; /* set to 0, so it's no notification to wait for, but the answer */ |
241 | int err; | |
242 | wait_queue_t wait; | |
243 | long timeout; | |
244 | ||
1da177e4 LT |
245 | init_waitqueue_entry(&wait, current); |
246 | ||
8d3a8b5c | 247 | mutex_lock(&mgr->msg_lock); |
1da177e4 LT |
248 | /* send the message */ |
249 | err = send_msg(mgr, request, max_resp_size, 1, &msg_frame); /* send and mark the answer pending */ | |
250 | if (err) { | |
8d3a8b5c | 251 | mutex_unlock(&mgr->msg_lock); |
1da177e4 LT |
252 | return err; |
253 | } | |
254 | ||
255 | set_current_state(TASK_UNINTERRUPTIBLE); | |
256 | add_wait_queue(&mgr->msg_sleep, &wait); | |
8d3a8b5c | 257 | mutex_unlock(&mgr->msg_lock); |
1da177e4 LT |
258 | timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES); |
259 | remove_wait_queue(&mgr->msg_sleep, &wait); | |
260 | ||
261 | if (! timeout) { | |
262 | /* error - no ack */ | |
6414e35d TI |
263 | dev_err(&mgr->pci->dev, |
264 | "error: no response on msg %x\n", msg_frame); | |
1da177e4 LT |
265 | return -EIO; |
266 | } | |
267 | ||
67b48b88 | 268 | /* retrieve the answer into the same struct mixart_msg */ |
1da177e4 | 269 | resp.message_id = 0; |
67b48b88 | 270 | resp.uid = (struct mixart_uid){0,0}; |
1da177e4 LT |
271 | resp.data = resp_data; |
272 | resp.size = max_resp_size; | |
273 | ||
274 | err = get_msg(mgr, &resp, msg_frame); | |
275 | ||
276 | if( request->message_id != resp.message_id ) | |
6414e35d | 277 | dev_err(&mgr->pci->dev, "RESPONSE ERROR!\n"); |
1da177e4 | 278 | |
1da177e4 LT |
279 | return err; |
280 | } | |
281 | ||
282 | ||
67b48b88 TI |
283 | int snd_mixart_send_msg_wait_notif(struct mixart_mgr *mgr, |
284 | struct mixart_msg *request, u32 notif_event) | |
1da177e4 LT |
285 | { |
286 | int err; | |
287 | wait_queue_t wait; | |
288 | long timeout; | |
289 | ||
da3cec35 TI |
290 | if (snd_BUG_ON(!notif_event)) |
291 | return -EINVAL; | |
292 | if (snd_BUG_ON((notif_event & MSG_TYPE_MASK) != MSG_TYPE_NOTIFY)) | |
293 | return -EINVAL; | |
294 | if (snd_BUG_ON(notif_event & MSG_CANCEL_NOTIFY_MASK)) | |
295 | return -EINVAL; | |
1da177e4 | 296 | |
1da177e4 LT |
297 | init_waitqueue_entry(&wait, current); |
298 | ||
8d3a8b5c | 299 | mutex_lock(&mgr->msg_lock); |
1da177e4 LT |
300 | /* send the message */ |
301 | err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 1, ¬if_event); /* send and mark the notification event pending */ | |
302 | if(err) { | |
8d3a8b5c | 303 | mutex_unlock(&mgr->msg_lock); |
1da177e4 LT |
304 | return err; |
305 | } | |
306 | ||
307 | set_current_state(TASK_UNINTERRUPTIBLE); | |
308 | add_wait_queue(&mgr->msg_sleep, &wait); | |
8d3a8b5c | 309 | mutex_unlock(&mgr->msg_lock); |
1da177e4 LT |
310 | timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES); |
311 | remove_wait_queue(&mgr->msg_sleep, &wait); | |
312 | ||
313 | if (! timeout) { | |
314 | /* error - no ack */ | |
6414e35d TI |
315 | dev_err(&mgr->pci->dev, |
316 | "error: notification %x not received\n", notif_event); | |
1da177e4 LT |
317 | return -EIO; |
318 | } | |
319 | ||
1da177e4 LT |
320 | return 0; |
321 | } | |
322 | ||
323 | ||
67b48b88 | 324 | int snd_mixart_send_msg_nonblock(struct mixart_mgr *mgr, struct mixart_msg *request) |
1da177e4 LT |
325 | { |
326 | u32 message_frame; | |
1da177e4 LT |
327 | int err; |
328 | ||
329 | /* just send the message (do not mark it as a pending one) */ | |
8d3a8b5c | 330 | mutex_lock(&mgr->msg_lock); |
1da177e4 | 331 | err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 0, &message_frame); |
8d3a8b5c | 332 | mutex_unlock(&mgr->msg_lock); |
1da177e4 | 333 | |
67b48b88 | 334 | /* the answer will be handled by snd_struct mixart_msgasklet() */ |
1da177e4 LT |
335 | atomic_inc(&mgr->msg_processed); |
336 | ||
337 | return err; | |
338 | } | |
339 | ||
340 | ||
8d3a8b5c | 341 | /* common buffer of interrupt to send/receive messages */ |
1da177e4 LT |
342 | static u32 mixart_msg_data[MSG_DEFAULT_SIZE / 4]; |
343 | ||
344 | ||
8d3a8b5c | 345 | static void snd_mixart_process_msg(struct mixart_mgr *mgr) |
1da177e4 | 346 | { |
67b48b88 | 347 | struct mixart_msg resp; |
1da177e4 LT |
348 | u32 msg, addr, type; |
349 | int err; | |
350 | ||
1da177e4 LT |
351 | while (mgr->msg_fifo_readptr != mgr->msg_fifo_writeptr) { |
352 | msg = mgr->msg_fifo[mgr->msg_fifo_readptr]; | |
353 | mgr->msg_fifo_readptr++; | |
354 | mgr->msg_fifo_readptr %= MSG_FIFO_SIZE; | |
355 | ||
356 | /* process the message ... */ | |
357 | addr = msg & ~MSG_TYPE_MASK; | |
358 | type = msg & MSG_TYPE_MASK; | |
359 | ||
360 | switch (type) { | |
361 | case MSG_TYPE_ANSWER: | |
362 | /* answer to a message on that we did not wait for (send_msg_nonblock) */ | |
363 | resp.message_id = 0; | |
364 | resp.data = mixart_msg_data; | |
365 | resp.size = sizeof(mixart_msg_data); | |
366 | err = get_msg(mgr, &resp, addr); | |
367 | if( err < 0 ) { | |
6414e35d | 368 | dev_err(&mgr->pci->dev, |
8d3a8b5c | 369 | "error(%d) reading mf %x\n", |
6414e35d | 370 | err, msg); |
1da177e4 LT |
371 | break; |
372 | } | |
373 | ||
374 | switch(resp.message_id) { | |
375 | case MSG_STREAM_START_INPUT_STAGE_PACKET: | |
376 | case MSG_STREAM_START_OUTPUT_STAGE_PACKET: | |
377 | case MSG_STREAM_STOP_INPUT_STAGE_PACKET: | |
378 | case MSG_STREAM_STOP_OUTPUT_STAGE_PACKET: | |
379 | if(mixart_msg_data[0]) | |
6414e35d | 380 | dev_err(&mgr->pci->dev, |
8d3a8b5c | 381 | "error MSG_STREAM_ST***_***PUT_STAGE_PACKET status=%x\n", |
6414e35d | 382 | mixart_msg_data[0]); |
1da177e4 LT |
383 | break; |
384 | default: | |
6414e35d | 385 | dev_dbg(&mgr->pci->dev, |
8d3a8b5c | 386 | "received mf(%x) : msg_id(%x) uid(%x, %x) size(%zd)\n", |
1da177e4 LT |
387 | msg, resp.message_id, resp.uid.object_id, resp.uid.desc, resp.size); |
388 | break; | |
389 | } | |
390 | break; | |
391 | case MSG_TYPE_NOTIFY: | |
392 | /* msg contains no address ! do not get_msg() ! */ | |
393 | case MSG_TYPE_COMMAND: | |
394 | /* get_msg() necessary */ | |
395 | default: | |
6414e35d | 396 | dev_err(&mgr->pci->dev, |
8d3a8b5c | 397 | "doesn't know what to do with message %x\n", |
6414e35d | 398 | msg); |
1da177e4 LT |
399 | } /* switch type */ |
400 | ||
401 | /* decrement counter */ | |
402 | atomic_dec(&mgr->msg_processed); | |
403 | ||
404 | } /* while there is a msg in fifo */ | |
1da177e4 LT |
405 | } |
406 | ||
407 | ||
7d12e780 | 408 | irqreturn_t snd_mixart_interrupt(int irq, void *dev_id) |
1da177e4 | 409 | { |
67b48b88 | 410 | struct mixart_mgr *mgr = dev_id; |
1da177e4 LT |
411 | u32 it_reg; |
412 | ||
1da177e4 LT |
413 | it_reg = readl_le(MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET)); |
414 | if( !(it_reg & MIXART_OIDI) ) { | |
415 | /* this device did not cause the interrupt */ | |
1da177e4 LT |
416 | return IRQ_NONE; |
417 | } | |
418 | ||
419 | /* mask all interrupts */ | |
420 | writel_le(MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG(mgr, MIXART_PCI_OMIMR_OFFSET)); | |
421 | ||
422 | /* outdoorbell register clear */ | |
423 | it_reg = readl(MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET)); | |
424 | writel(it_reg, MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET)); | |
425 | ||
426 | /* clear interrupt */ | |
427 | writel_le( MIXART_OIDI, MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET) ); | |
428 | ||
8d3a8b5c TI |
429 | return IRQ_WAKE_THREAD; |
430 | } | |
431 | ||
432 | irqreturn_t snd_mixart_threaded_irq(int irq, void *dev_id) | |
433 | { | |
434 | struct mixart_mgr *mgr = dev_id; | |
435 | int err; | |
436 | struct mixart_msg resp; | |
437 | u32 msg; | |
438 | ||
439 | mutex_lock(&mgr->lock); | |
1da177e4 LT |
440 | /* process interrupt */ |
441 | while (retrieve_msg_frame(mgr, &msg)) { | |
442 | ||
443 | switch (msg & MSG_TYPE_MASK) { | |
444 | case MSG_TYPE_COMMAND: | |
445 | resp.message_id = 0; | |
446 | resp.data = mixart_msg_data; | |
447 | resp.size = sizeof(mixart_msg_data); | |
448 | err = get_msg(mgr, &resp, msg & ~MSG_TYPE_MASK); | |
449 | if( err < 0 ) { | |
6414e35d TI |
450 | dev_err(&mgr->pci->dev, |
451 | "interrupt: error(%d) reading mf %x\n", | |
452 | err, msg); | |
1da177e4 LT |
453 | break; |
454 | } | |
455 | ||
456 | if(resp.message_id == MSG_SERVICES_TIMER_NOTIFY) { | |
457 | int i; | |
67b48b88 TI |
458 | struct mixart_timer_notify *notify; |
459 | notify = (struct mixart_timer_notify *)mixart_msg_data; | |
1da177e4 LT |
460 | |
461 | for(i=0; i<notify->stream_count; i++) { | |
462 | ||
463 | u32 buffer_id = notify->streams[i].buffer_id; | |
464 | unsigned int chip_number = (buffer_id & MIXART_NOTIFY_CARD_MASK) >> MIXART_NOTIFY_CARD_OFFSET; /* card0 to 3 */ | |
465 | unsigned int pcm_number = (buffer_id & MIXART_NOTIFY_PCM_MASK ) >> MIXART_NOTIFY_PCM_OFFSET; /* pcm0 to 3 */ | |
466 | unsigned int sub_number = buffer_id & MIXART_NOTIFY_SUBS_MASK; /* 0 to MIXART_PLAYBACK_STREAMS */ | |
467 | unsigned int is_capture = ((buffer_id & MIXART_NOTIFY_CAPT_MASK) != 0); /* playback == 0 / capture == 1 */ | |
468 | ||
67b48b88 TI |
469 | struct snd_mixart *chip = mgr->chip[chip_number]; |
470 | struct mixart_stream *stream; | |
1da177e4 LT |
471 | |
472 | if ((chip_number >= mgr->num_cards) || (pcm_number >= MIXART_PCM_TOTAL) || (sub_number >= MIXART_PLAYBACK_STREAMS)) { | |
6414e35d TI |
473 | dev_err(&mgr->pci->dev, |
474 | "error MSG_SERVICES_TIMER_NOTIFY buffer_id (%x) pos(%d)\n", | |
1da177e4 LT |
475 | buffer_id, notify->streams[i].sample_pos_low_part); |
476 | break; | |
477 | } | |
478 | ||
479 | if (is_capture) | |
480 | stream = &chip->capture_stream[pcm_number]; | |
481 | else | |
482 | stream = &chip->playback_stream[pcm_number][sub_number]; | |
483 | ||
484 | if (stream->substream && (stream->status == MIXART_STREAM_STATUS_RUNNING)) { | |
67b48b88 | 485 | struct snd_pcm_runtime *runtime = stream->substream->runtime; |
1da177e4 LT |
486 | int elapsed = 0; |
487 | u64 sample_count = ((u64)notify->streams[i].sample_pos_high_part) << 32; | |
488 | sample_count |= notify->streams[i].sample_pos_low_part; | |
489 | ||
490 | while (1) { | |
491 | u64 new_elapse_pos = stream->abs_period_elapsed + runtime->period_size; | |
492 | ||
493 | if (new_elapse_pos > sample_count) { | |
494 | break; /* while */ | |
495 | } | |
496 | else { | |
497 | elapsed = 1; | |
498 | stream->buf_periods++; | |
499 | if (stream->buf_periods >= runtime->periods) | |
500 | stream->buf_periods = 0; | |
501 | ||
502 | stream->abs_period_elapsed = new_elapse_pos; | |
503 | } | |
504 | } | |
505 | stream->buf_period_frag = (u32)( sample_count - stream->abs_period_elapsed ); | |
506 | ||
507 | if(elapsed) { | |
8d3a8b5c | 508 | mutex_unlock(&mgr->lock); |
1da177e4 | 509 | snd_pcm_period_elapsed(stream->substream); |
8d3a8b5c | 510 | mutex_lock(&mgr->lock); |
1da177e4 LT |
511 | } |
512 | } | |
513 | } | |
514 | break; | |
515 | } | |
516 | if(resp.message_id == MSG_SERVICES_REPORT_TRACES) { | |
517 | if(resp.size > 1) { | |
518 | #ifndef __BIG_ENDIAN | |
519 | /* Traces are text: the swapped msg_data has to be swapped back ! */ | |
520 | int i; | |
521 | for(i=0; i<(resp.size/4); i++) { | |
522 | (mixart_msg_data)[i] = cpu_to_be32((mixart_msg_data)[i]); | |
523 | } | |
524 | #endif | |
525 | ((char*)mixart_msg_data)[resp.size - 1] = 0; | |
6414e35d TI |
526 | dev_dbg(&mgr->pci->dev, |
527 | "MIXART TRACE : %s\n", | |
528 | (char *)mixart_msg_data); | |
1da177e4 LT |
529 | } |
530 | break; | |
531 | } | |
532 | ||
6414e35d TI |
533 | dev_dbg(&mgr->pci->dev, "command %x not handled\n", |
534 | resp.message_id); | |
1da177e4 LT |
535 | break; |
536 | ||
537 | case MSG_TYPE_NOTIFY: | |
538 | if(msg & MSG_CANCEL_NOTIFY_MASK) { | |
539 | msg &= ~MSG_CANCEL_NOTIFY_MASK; | |
6414e35d TI |
540 | dev_err(&mgr->pci->dev, |
541 | "canceled notification %x !\n", msg); | |
1da177e4 LT |
542 | } |
543 | /* no break, continue ! */ | |
544 | case MSG_TYPE_ANSWER: | |
545 | /* answer or notification to a message we are waiting for*/ | |
8d3a8b5c | 546 | mutex_lock(&mgr->msg_lock); |
1da177e4 LT |
547 | if( (msg & ~MSG_TYPE_MASK) == mgr->pending_event ) { |
548 | wake_up(&mgr->msg_sleep); | |
549 | mgr->pending_event = 0; | |
550 | } | |
551 | /* answer to a message we did't want to wait for */ | |
552 | else { | |
553 | mgr->msg_fifo[mgr->msg_fifo_writeptr] = msg; | |
554 | mgr->msg_fifo_writeptr++; | |
555 | mgr->msg_fifo_writeptr %= MSG_FIFO_SIZE; | |
8d3a8b5c | 556 | snd_mixart_process_msg(mgr); |
1da177e4 | 557 | } |
8d3a8b5c | 558 | mutex_unlock(&mgr->msg_lock); |
1da177e4 LT |
559 | break; |
560 | case MSG_TYPE_REQUEST: | |
561 | default: | |
6414e35d TI |
562 | dev_dbg(&mgr->pci->dev, |
563 | "interrupt received request %x\n", msg); | |
1da177e4 LT |
564 | /* TODO : are there things to do here ? */ |
565 | break; | |
566 | } /* switch on msg type */ | |
567 | } /* while there are msgs */ | |
568 | ||
569 | /* allow interrupt again */ | |
570 | writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET)); | |
571 | ||
8d3a8b5c | 572 | mutex_unlock(&mgr->lock); |
1da177e4 LT |
573 | |
574 | return IRQ_HANDLED; | |
575 | } | |
576 | ||
577 | ||
67b48b88 | 578 | void snd_mixart_init_mailbox(struct mixart_mgr *mgr) |
1da177e4 LT |
579 | { |
580 | writel( 0, MIXART_MEM( mgr, MSG_HOST_RSC_PROTECTION ) ); | |
581 | writel( 0, MIXART_MEM( mgr, MSG_AGENT_RSC_PROTECTION ) ); | |
582 | ||
583 | /* allow outbound messagebox to generate interrupts */ | |
584 | if(mgr->irq >= 0) { | |
585 | writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET)); | |
586 | } | |
587 | return; | |
588 | } | |
589 | ||
67b48b88 | 590 | void snd_mixart_exit_mailbox(struct mixart_mgr *mgr) |
1da177e4 LT |
591 | { |
592 | /* no more interrupts on outbound messagebox */ | |
593 | writel_le( MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET)); | |
594 | return; | |
595 | } | |
596 | ||
67b48b88 | 597 | void snd_mixart_reset_board(struct mixart_mgr *mgr) |
1da177e4 LT |
598 | { |
599 | /* reset miXart */ | |
600 | writel_be( 1, MIXART_REG(mgr, MIXART_BA1_BRUTAL_RESET_OFFSET) ); | |
601 | return; | |
602 | } |