1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Driver for Digigram miXart soundcards 4 * 5 * low level interface with interrupt handling and mail box implementation 6 * 7 * Copyright (c) 2003 by Digigram <alsa@digigram.com> 8 */ 9 10#include <linux/interrupt.h> 11#include <linux/mutex.h> 12#include <linux/pci.h> 13#include <linux/io.h> 14 15#include <sound/core.h> 16#include "mixart.h" 17#include "mixart_hwdep.h" 18#include "mixart_core.h" 19 20 21#define MSG_TIMEOUT_JIFFIES (400 * HZ) / 1000 /* 400 ms */ 22 23#define MSG_DESCRIPTOR_SIZE 0x24 24#define MSG_HEADER_SIZE (MSG_DESCRIPTOR_SIZE + 4) 25 26#define MSG_TYPE_MASK 0x00000003 /* mask for following types */ 27#define MSG_TYPE_NOTIFY 0 /* embedded -> driver (only notification, do not get_msg() !) */ 28#define MSG_TYPE_COMMAND 1 /* driver <-> embedded (a command has no answer) */ 29#define MSG_TYPE_REQUEST 2 /* driver -> embedded (request will get an answer back) */ 30#define MSG_TYPE_ANSWER 3 /* embedded -> driver */ 31#define MSG_CANCEL_NOTIFY_MASK 0x80000000 /* this bit is set for a notification that has been canceled */ 32 33 34static int retrieve_msg_frame(struct mixart_mgr *mgr, u32 *msg_frame) 35{ 36 /* read the message frame fifo */ 37 u32 headptr, tailptr; 38 39 tailptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL)); 40 headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_HEAD)); 41 42 if (tailptr == headptr) 43 return 0; /* no message posted */ 44 45 if (tailptr < MSG_OUTBOUND_POST_STACK) 46 return 0; /* error */ 47 if (tailptr >= MSG_OUTBOUND_POST_STACK + MSG_BOUND_STACK_SIZE) 48 return 0; /* error */ 49 50 *msg_frame = readl_be(MIXART_MEM(mgr, tailptr)); 51 52 /* increment the tail index */ 53 tailptr += 4; 54 if( tailptr >= (MSG_OUTBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) ) 55 tailptr = MSG_OUTBOUND_POST_STACK; 56 writel_be(tailptr, MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL)); 57 58 return 1; 59} 60 61static int get_msg(struct mixart_mgr *mgr, struct mixart_msg *resp, 62 u32 msg_frame_address ) 63{ 64 u32 headptr; 65 u32 size; 66 int err; 67#ifndef __BIG_ENDIAN 68 unsigned int i; 69#endif 70 71 err = 0; 72 73 /* copy message descriptor from miXart to driver */ 74 size = readl_be(MIXART_MEM(mgr, msg_frame_address)); /* size of descriptor + response */ 75 resp->message_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 4)); /* dwMessageID */ 76 resp->uid.object_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 8)); /* uidDest */ 77 resp->uid.desc = readl_be(MIXART_MEM(mgr, msg_frame_address + 12)); /* */ 78 79 if( (size < MSG_DESCRIPTOR_SIZE) || (resp->size < (size - MSG_DESCRIPTOR_SIZE))) { 80 err = -EINVAL; 81 dev_err(&mgr->pci->dev, 82 "problem with response size = %d\n", size); 83 goto _clean_exit; 84 } 85 size -= MSG_DESCRIPTOR_SIZE; 86 87 memcpy_fromio(resp->data, MIXART_MEM(mgr, msg_frame_address + MSG_HEADER_SIZE ), size); 88 resp->size = size; 89 90 /* swap if necessary */ 91#ifndef __BIG_ENDIAN 92 size /= 4; /* u32 size */ 93 for(i=0; i < size; i++) { 94 ((u32*)resp->data)[i] = be32_to_cpu(((__be32*)resp->data)[i]); 95 } 96#endif 97 98 /* 99 * free message frame address 100 */ 101 headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD)); 102 103 if( (headptr < MSG_OUTBOUND_FREE_STACK) || ( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) { 104 err = -EINVAL; 105 goto _clean_exit; 106 } 107 108 /* give address back to outbound fifo */ 109 writel_be(msg_frame_address, MIXART_MEM(mgr, headptr)); 110 111 /* increment the outbound free head */ 112 headptr += 4; 113 if( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) ) 114 headptr = MSG_OUTBOUND_FREE_STACK; 115 116 writel_be(headptr, MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD)); 117 118 _clean_exit: 119 return err; 120} 121 122 123/* 124 * send a message to miXart. return: the msg_frame used for this message 125 */ 126/* call with mgr->msg_lock held! */ 127static int send_msg( struct mixart_mgr *mgr, 128 struct mixart_msg *msg, 129 int max_answersize, 130 int mark_pending, 131 u32 *msg_event) 132{ 133 u32 headptr, tailptr; 134 u32 msg_frame_address; 135 int i; 136 137 if (snd_BUG_ON(msg->size % 4)) 138 return -EINVAL; 139 140 /* get message frame address */ 141 tailptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL)); 142 headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_HEAD)); 143 144 if (tailptr == headptr) { 145 dev_err(&mgr->pci->dev, "error: no message frame available\n"); 146 return -EBUSY; 147 } 148 149 if( (tailptr < MSG_INBOUND_FREE_STACK) || (tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) { 150 return -EINVAL; 151 } 152 153 msg_frame_address = readl_be(MIXART_MEM(mgr, tailptr)); 154 writel(0, MIXART_MEM(mgr, tailptr)); /* set address to zero on this fifo position */ 155 156 /* increment the inbound free tail */ 157 tailptr += 4; 158 if( tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) ) 159 tailptr = MSG_INBOUND_FREE_STACK; 160 161 writel_be(tailptr, MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL)); 162 163 /* TODO : use memcpy_toio() with intermediate buffer to copy the message */ 164 165 /* copy message descriptor to card memory */ 166 writel_be( msg->size + MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address) ); /* size of descriptor + request */ 167 writel_be( msg->message_id , MIXART_MEM(mgr, msg_frame_address + 4) ); /* dwMessageID */ 168 writel_be( msg->uid.object_id, MIXART_MEM(mgr, msg_frame_address + 8) ); /* uidDest */ 169 writel_be( msg->uid.desc, MIXART_MEM(mgr, msg_frame_address + 12) ); /* */ 170 writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 16) ); /* SizeHeader */ 171 writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 20) ); /* OffsetDLL_T16 */ 172 writel_be( msg->size, MIXART_MEM(mgr, msg_frame_address + 24) ); /* SizeDLL_T16 */ 173 writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 28) ); /* OffsetDLL_DRV */ 174 writel_be( 0, MIXART_MEM(mgr, msg_frame_address + 32) ); /* SizeDLL_DRV */ 175 writel_be( MSG_DESCRIPTOR_SIZE + max_answersize, MIXART_MEM(mgr, msg_frame_address + 36) ); /* dwExpectedAnswerSize */ 176 177 /* copy message data to card memory */ 178 for( i=0; i < msg->size; i+=4 ) { 179 writel_be( *(u32*)(msg->data + i), MIXART_MEM(mgr, MSG_HEADER_SIZE + msg_frame_address + i) ); 180 } 181 182 if( mark_pending ) { 183 if( *msg_event ) { 184 /* the pending event is the notification we wait for ! */ 185 mgr->pending_event = *msg_event; 186 } 187 else { 188 /* the pending event is the answer we wait for (same address than the request)! */ 189 mgr->pending_event = msg_frame_address; 190 191 /* copy address back to caller */ 192 *msg_event = msg_frame_address; 193 } 194 } 195 196 /* mark the frame as a request (will have an answer) */ 197 msg_frame_address |= MSG_TYPE_REQUEST; 198 199 /* post the frame */ 200 headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD)); 201 202 if( (headptr < MSG_INBOUND_POST_STACK) || (headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE))) { 203 return -EINVAL; 204 } 205 206 writel_be(msg_frame_address, MIXART_MEM(mgr, headptr)); 207 208 /* increment the inbound post head */ 209 headptr += 4; 210 if( headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) ) 211 headptr = MSG_INBOUND_POST_STACK; 212 213 writel_be(headptr, MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD)); 214 215 return 0; 216} 217 218 219int snd_mixart_send_msg(struct mixart_mgr *mgr, struct mixart_msg *request, int max_resp_size, void *resp_data) 220{ 221 struct mixart_msg resp; 222 u32 msg_frame = 0; /* set to 0, so it's no notification to wait for, but the answer */ 223 int err; 224 wait_queue_entry_t wait; 225 long timeout; 226 227 init_waitqueue_entry(&wait, current); 228 229 mutex_lock(&mgr->msg_lock); 230 /* send the message */ 231 err = send_msg(mgr, request, max_resp_size, 1, &msg_frame); /* send and mark the answer pending */ 232 if (err) { 233 mutex_unlock(&mgr->msg_lock); 234 return err; 235 } 236 237 set_current_state(TASK_UNINTERRUPTIBLE); 238 add_wait_queue(&mgr->msg_sleep, &wait); 239 mutex_unlock(&mgr->msg_lock); 240 timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES); 241 remove_wait_queue(&mgr->msg_sleep, &wait); 242 243 if (! timeout) { 244 /* error - no ack */ 245 dev_err(&mgr->pci->dev, 246 "error: no response on msg %x\n", msg_frame); 247 return -EIO; 248 } 249 250 /* retrieve the answer into the same struct mixart_msg */ 251 resp.message_id = 0; 252 resp.uid = (struct mixart_uid){0,0}; 253 resp.data = resp_data; 254 resp.size = max_resp_size; 255 256 mutex_lock(&mgr->msg_lock); 257 err = get_msg(mgr, &resp, msg_frame); 258 mutex_unlock(&mgr->msg_lock); 259 260 if( request->message_id != resp.message_id ) 261 dev_err(&mgr->pci->dev, "RESPONSE ERROR!\n"); 262 263 return err; 264} 265 266 267int snd_mixart_send_msg_wait_notif(struct mixart_mgr *mgr, 268 struct mixart_msg *request, u32 notif_event) 269{ 270 int err; 271 wait_queue_entry_t wait; 272 long timeout; 273 274 if (snd_BUG_ON(!notif_event)) 275 return -EINVAL; 276 if (snd_BUG_ON((notif_event & MSG_TYPE_MASK) != MSG_TYPE_NOTIFY)) 277 return -EINVAL; 278 if (snd_BUG_ON(notif_event & MSG_CANCEL_NOTIFY_MASK)) 279 return -EINVAL; 280 281 init_waitqueue_entry(&wait, current); 282 283 mutex_lock(&mgr->msg_lock); 284 /* send the message */ 285 err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 1, ¬if_event); /* send and mark the notification event pending */ 286 if(err) { 287 mutex_unlock(&mgr->msg_lock); 288 return err; 289 } 290 291 set_current_state(TASK_UNINTERRUPTIBLE); 292 add_wait_queue(&mgr->msg_sleep, &wait); 293 mutex_unlock(&mgr->msg_lock); 294 timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES); 295 remove_wait_queue(&mgr->msg_sleep, &wait); 296 297 if (! timeout) { 298 /* error - no ack */ 299 dev_err(&mgr->pci->dev, 300 "error: notification %x not received\n", notif_event); 301 return -EIO; 302 } 303 304 return 0; 305} 306 307 308int snd_mixart_send_msg_nonblock(struct mixart_mgr *mgr, struct mixart_msg *request) 309{ 310 u32 message_frame; 311 int err; 312 313 /* just send the message (do not mark it as a pending one) */ 314 mutex_lock(&mgr->msg_lock); 315 err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 0, &message_frame); 316 mutex_unlock(&mgr->msg_lock); 317 318 /* the answer will be handled by snd_struct mixart_msgasklet() */ 319 atomic_inc(&mgr->msg_processed); 320 321 return err; 322} 323 324 325/* common buffer of interrupt to send/receive messages */ 326static u32 mixart_msg_data[MSG_DEFAULT_SIZE / 4]; 327 328 329static void snd_mixart_process_msg(struct mixart_mgr *mgr) 330{ 331 struct mixart_msg resp; 332 u32 msg, addr, type; 333 int err; 334 335 while (mgr->msg_fifo_readptr != mgr->msg_fifo_writeptr) { 336 msg = mgr->msg_fifo[mgr->msg_fifo_readptr]; 337 mgr->msg_fifo_readptr++; 338 mgr->msg_fifo_readptr %= MSG_FIFO_SIZE; 339 340 /* process the message ... */ 341 addr = msg & ~MSG_TYPE_MASK; 342 type = msg & MSG_TYPE_MASK; 343 344 switch (type) { 345 case MSG_TYPE_ANSWER: 346 /* answer to a message on that we did not wait for (send_msg_nonblock) */ 347 resp.message_id = 0; 348 resp.data = mixart_msg_data; 349 resp.size = sizeof(mixart_msg_data); 350 err = get_msg(mgr, &resp, addr); 351 if( err < 0 ) { 352 dev_err(&mgr->pci->dev, 353 "error(%d) reading mf %x\n", 354 err, msg); 355 break; 356 } 357 358 switch(resp.message_id) { 359 case MSG_STREAM_START_INPUT_STAGE_PACKET: 360 case MSG_STREAM_START_OUTPUT_STAGE_PACKET: 361 case MSG_STREAM_STOP_INPUT_STAGE_PACKET: 362 case MSG_STREAM_STOP_OUTPUT_STAGE_PACKET: 363 if(mixart_msg_data[0]) 364 dev_err(&mgr->pci->dev, 365 "error MSG_STREAM_ST***_***PUT_STAGE_PACKET status=%x\n", 366 mixart_msg_data[0]); 367 break; 368 default: 369 dev_dbg(&mgr->pci->dev, 370 "received mf(%x) : msg_id(%x) uid(%x, %x) size(%zd)\n", 371 msg, resp.message_id, resp.uid.object_id, resp.uid.desc, resp.size); 372 break; 373 } 374 break; 375 case MSG_TYPE_NOTIFY: 376 /* msg contains no address ! do not get_msg() ! */ 377 case MSG_TYPE_COMMAND: 378 /* get_msg() necessary */ 379 default: 380 dev_err(&mgr->pci->dev, 381 "doesn't know what to do with message %x\n", 382 msg); 383 } /* switch type */ 384 385 /* decrement counter */ 386 atomic_dec(&mgr->msg_processed); 387 388 } /* while there is a msg in fifo */ 389} 390 391 392irqreturn_t snd_mixart_interrupt(int irq, void *dev_id) 393{ 394 struct mixart_mgr *mgr = dev_id; 395 u32 it_reg; 396 397 it_reg = readl_le(MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET)); 398 if( !(it_reg & MIXART_OIDI) ) { 399 /* this device did not cause the interrupt */ 400 return IRQ_NONE; 401 } 402 403 /* mask all interrupts */ 404 writel_le(MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG(mgr, MIXART_PCI_OMIMR_OFFSET)); 405 406 /* outdoorbell register clear */ 407 it_reg = readl(MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET)); 408 writel(it_reg, MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET)); 409 410 /* clear interrupt */ 411 writel_le( MIXART_OIDI, MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET) ); 412 413 return IRQ_WAKE_THREAD; 414} 415 416irqreturn_t snd_mixart_threaded_irq(int irq, void *dev_id) 417{ 418 struct mixart_mgr *mgr = dev_id; 419 int err; 420 struct mixart_msg resp; 421 u32 msg; 422 423 mutex_lock(&mgr->lock); 424 /* process interrupt */ 425 while (retrieve_msg_frame(mgr, &msg)) { 426 427 switch (msg & MSG_TYPE_MASK) { 428 case MSG_TYPE_COMMAND: 429 resp.message_id = 0; 430 resp.data = mixart_msg_data; 431 resp.size = sizeof(mixart_msg_data); 432 err = get_msg(mgr, &resp, msg & ~MSG_TYPE_MASK); 433 if( err < 0 ) { 434 dev_err(&mgr->pci->dev, 435 "interrupt: error(%d) reading mf %x\n", 436 err, msg); 437 break; 438 } 439 440 if(resp.message_id == MSG_SERVICES_TIMER_NOTIFY) { 441 int i; 442 struct mixart_timer_notify *notify; 443 notify = (struct mixart_timer_notify *)mixart_msg_data; 444 445 BUILD_BUG_ON(sizeof(notify) > sizeof(mixart_msg_data)); 446 if (snd_BUG_ON(notify->stream_count > ARRAY_SIZE(notify->streams))) 447 break; 448 for(i=0; i<notify->stream_count; i++) { 449 450 u32 buffer_id = notify->streams[i].buffer_id; 451 unsigned int chip_number = (buffer_id & MIXART_NOTIFY_CARD_MASK) >> MIXART_NOTIFY_CARD_OFFSET; /* card0 to 3 */ 452 unsigned int pcm_number = (buffer_id & MIXART_NOTIFY_PCM_MASK ) >> MIXART_NOTIFY_PCM_OFFSET; /* pcm0 to 3 */ 453 unsigned int sub_number = buffer_id & MIXART_NOTIFY_SUBS_MASK; /* 0 to MIXART_PLAYBACK_STREAMS */ 454 unsigned int is_capture = ((buffer_id & MIXART_NOTIFY_CAPT_MASK) != 0); /* playback == 0 / capture == 1 */ 455 456 struct snd_mixart *chip = mgr->chip[chip_number]; 457 struct mixart_stream *stream; 458 459 if ((chip_number >= mgr->num_cards) || (pcm_number >= MIXART_PCM_TOTAL) || (sub_number >= MIXART_PLAYBACK_STREAMS)) { 460 dev_err(&mgr->pci->dev, 461 "error MSG_SERVICES_TIMER_NOTIFY buffer_id (%x) pos(%d)\n", 462 buffer_id, notify->streams[i].sample_pos_low_part); 463 break; 464 } 465 466 if (is_capture) 467 stream = &chip->capture_stream[pcm_number]; 468 else 469 stream = &chip->playback_stream[pcm_number][sub_number]; 470 471 if (stream->substream && (stream->status == MIXART_STREAM_STATUS_RUNNING)) { 472 struct snd_pcm_runtime *runtime = stream->substream->runtime; 473 int elapsed = 0; 474 u64 sample_count = ((u64)notify->streams[i].sample_pos_high_part) << 32; 475 sample_count |= notify->streams[i].sample_pos_low_part; 476 477 while (1) { 478 u64 new_elapse_pos = stream->abs_period_elapsed + runtime->period_size; 479 480 if (new_elapse_pos > sample_count) { 481 break; /* while */ 482 } 483 else { 484 elapsed = 1; 485 stream->buf_periods++; 486 if (stream->buf_periods >= runtime->periods) 487 stream->buf_periods = 0; 488 489 stream->abs_period_elapsed = new_elapse_pos; 490 } 491 } 492 stream->buf_period_frag = (u32)( sample_count - stream->abs_period_elapsed ); 493 494 if(elapsed) { 495 mutex_unlock(&mgr->lock); 496 snd_pcm_period_elapsed(stream->substream); 497 mutex_lock(&mgr->lock); 498 } 499 } 500 } 501 break; 502 } 503 if(resp.message_id == MSG_SERVICES_REPORT_TRACES) { 504 if(resp.size > 1) { 505#ifndef __BIG_ENDIAN 506 /* Traces are text: the swapped msg_data has to be swapped back ! */ 507 int i; 508 for(i=0; i<(resp.size/4); i++) { 509 ((__be32*)mixart_msg_data)[i] = cpu_to_be32((mixart_msg_data)[i]); 510 } 511#endif 512 ((char*)mixart_msg_data)[resp.size - 1] = 0; 513 dev_dbg(&mgr->pci->dev, 514 "MIXART TRACE : %s\n", 515 (char *)mixart_msg_data); 516 } 517 break; 518 } 519 520 dev_dbg(&mgr->pci->dev, "command %x not handled\n", 521 resp.message_id); 522 break; 523 524 case MSG_TYPE_NOTIFY: 525 if(msg & MSG_CANCEL_NOTIFY_MASK) { 526 msg &= ~MSG_CANCEL_NOTIFY_MASK; 527 dev_err(&mgr->pci->dev, 528 "canceled notification %x !\n", msg); 529 } 530 fallthrough; 531 case MSG_TYPE_ANSWER: 532 /* answer or notification to a message we are waiting for*/ 533 mutex_lock(&mgr->msg_lock); 534 if( (msg & ~MSG_TYPE_MASK) == mgr->pending_event ) { 535 wake_up(&mgr->msg_sleep); 536 mgr->pending_event = 0; 537 } 538 /* answer to a message we did't want to wait for */ 539 else { 540 mgr->msg_fifo[mgr->msg_fifo_writeptr] = msg; 541 mgr->msg_fifo_writeptr++; 542 mgr->msg_fifo_writeptr %= MSG_FIFO_SIZE; 543 snd_mixart_process_msg(mgr); 544 } 545 mutex_unlock(&mgr->msg_lock); 546 break; 547 case MSG_TYPE_REQUEST: 548 default: 549 dev_dbg(&mgr->pci->dev, 550 "interrupt received request %x\n", msg); 551 /* TODO : are there things to do here ? */ 552 break; 553 } /* switch on msg type */ 554 } /* while there are msgs */ 555 556 /* allow interrupt again */ 557 writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET)); 558 559 mutex_unlock(&mgr->lock); 560 561 return IRQ_HANDLED; 562} 563 564 565void snd_mixart_init_mailbox(struct mixart_mgr *mgr) 566{ 567 writel( 0, MIXART_MEM( mgr, MSG_HOST_RSC_PROTECTION ) ); 568 writel( 0, MIXART_MEM( mgr, MSG_AGENT_RSC_PROTECTION ) ); 569 570 /* allow outbound messagebox to generate interrupts */ 571 if(mgr->irq >= 0) { 572 writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET)); 573 } 574 return; 575} 576 577void snd_mixart_exit_mailbox(struct mixart_mgr *mgr) 578{ 579 /* no more interrupts on outbound messagebox */ 580 writel_le( MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET)); 581 return; 582} 583 584void snd_mixart_reset_board(struct mixart_mgr *mgr) 585{ 586 /* reset miXart */ 587 writel_be( 1, MIXART_REG(mgr, MIXART_BA1_BRUTAL_RESET_OFFSET) ); 588 return; 589} 590