dsp.c (54535) | dsp.c (55204) |
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1/* 2 * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 1/* 2 * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
26 * $FreeBSD: head/sys/dev/sound/pcm/dsp.c 54535 1999-12-13 03:29:09Z cg $ | 26 * $FreeBSD: head/sys/dev/sound/pcm/dsp.c 55204 1999-12-29 03:46:54Z cg $ |
27 */ 28 29#include <sys/param.h> 30#include <sys/queue.h> 31#include <sys/kernel.h> 32 33#include <dev/sound/pcm/sound.h> 34 --- 177 unchanged lines hidden (view full) --- 212 */ 213 s = spltty(); 214 switch(cmd) { 215 216 /* 217 * we start with the new ioctl interface. 218 */ 219 case AIONWRITE: /* how many bytes can write ? */ | 27 */ 28 29#include <sys/param.h> 30#include <sys/queue.h> 31#include <sys/kernel.h> 32 33#include <dev/sound/pcm/sound.h> 34 --- 177 unchanged lines hidden (view full) --- 212 */ 213 s = spltty(); 214 switch(cmd) { 215 216 /* 217 * we start with the new ioctl interface. 218 */ 219 case AIONWRITE: /* how many bytes can write ? */ |
220 if (wrch && wrch->buffer.dl) chn_dmaupdate(wrch); 221 *arg_i = wrch? wrch->buffer.fl : 0; | 220 if (wrch && wrch->buffer.dl) 221 while (chn_wrfeed(wrch) > 0); 222 *arg_i = wrch? wrch->buffer2nd.fl : 0; |
222 break; 223 224 case AIOSSIZE: /* set the current blocksize */ 225 { 226 struct snd_size *p = (struct snd_size *)arg; | 223 break; 224 225 case AIOSSIZE: /* set the current blocksize */ 226 { 227 struct snd_size *p = (struct snd_size *)arg; |
227 splx(s); | |
228 if (wrch) chn_setblocksize(wrch, p->play_size); 229 if (rdch) chn_setblocksize(rdch, p->rec_size); 230 } 231 /* FALLTHROUGH */ 232 case AIOGSIZE: /* get the current blocksize */ 233 { 234 struct snd_size *p = (struct snd_size *)arg; | 228 if (wrch) chn_setblocksize(wrch, p->play_size); 229 if (rdch) chn_setblocksize(rdch, p->rec_size); 230 } 231 /* FALLTHROUGH */ 232 case AIOGSIZE: /* get the current blocksize */ 233 { 234 struct snd_size *p = (struct snd_size *)arg; |
235 if (wrch) p->play_size = wrch->blocksize; 236 if (rdch) p->rec_size = rdch->blocksize; | 235 if (wrch) p->play_size = wrch->blocksize2nd; 236 if (rdch) p->rec_size = rdch->blocksize2nd; |
237 } 238 break; 239 240 case AIOSFMT: 241 { 242 snd_chan_param *p = (snd_chan_param *)arg; | 237 } 238 break; 239 240 case AIOSFMT: 241 { 242 snd_chan_param *p = (snd_chan_param *)arg; |
243 splx(s); | |
244 if (wrch) { 245 chn_setformat(wrch, p->play_format); 246 chn_setspeed(wrch, p->play_rate); 247 } 248 if (rdch) { 249 chn_setformat(rdch, p->rec_format); 250 chn_setspeed(rdch, p->rec_rate); 251 } --- 15 unchanged lines hidden (view full) --- 267 snd_capabilities *p = (snd_capabilities *)arg; 268 pcmchan_caps *pcaps = NULL, *rcaps = NULL; 269 if (rdch) rcaps = chn_getcaps(rdch); 270 if (wrch) pcaps = chn_getcaps(wrch); 271 p->rate_min = max(rcaps? rcaps->minspeed : 0, 272 pcaps? pcaps->minspeed : 0); 273 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 274 pcaps? pcaps->maxspeed : 1000000); | 243 if (wrch) { 244 chn_setformat(wrch, p->play_format); 245 chn_setspeed(wrch, p->play_rate); 246 } 247 if (rdch) { 248 chn_setformat(rdch, p->rec_format); 249 chn_setspeed(rdch, p->rec_rate); 250 } --- 15 unchanged lines hidden (view full) --- 266 snd_capabilities *p = (snd_capabilities *)arg; 267 pcmchan_caps *pcaps = NULL, *rcaps = NULL; 268 if (rdch) rcaps = chn_getcaps(rdch); 269 if (wrch) pcaps = chn_getcaps(wrch); 270 p->rate_min = max(rcaps? rcaps->minspeed : 0, 271 pcaps? pcaps->minspeed : 0); 272 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 273 pcaps? pcaps->maxspeed : 1000000); |
275 p->bufsize = min(rdch? rdch->buffer.bufsize : 1000000, 276 wrch? wrch->buffer.bufsize : 1000000); | 274 p->bufsize = min(rdch? rdch->buffer2nd.bufsize : 1000000, 275 wrch? wrch->buffer2nd.bufsize : 1000000); |
277 /* XXX bad on sb16 */ 278 p->formats = (rcaps? rcaps->formats : 0xffffffff) & 279 (pcaps? pcaps->formats : 0xffffffff); 280 p->mixers = 1; /* default: one mixer */ 281 p->inputs = d->mixer.devs; 282 p->left = p->right = 100; 283 } 284 break; 285 286 case AIOSTOP: 287 if (*arg_i == AIOSYNC_PLAY && wrch) *arg_i = chn_abort(wrch); 288 else if (*arg_i == AIOSYNC_CAPTURE && rdch) *arg_i = chn_abort(rdch); 289 else { | 276 /* XXX bad on sb16 */ 277 p->formats = (rcaps? rcaps->formats : 0xffffffff) & 278 (pcaps? pcaps->formats : 0xffffffff); 279 p->mixers = 1; /* default: one mixer */ 280 p->inputs = d->mixer.devs; 281 p->left = p->right = 100; 282 } 283 break; 284 285 case AIOSTOP: 286 if (*arg_i == AIOSYNC_PLAY && wrch) *arg_i = chn_abort(wrch); 287 else if (*arg_i == AIOSYNC_CAPTURE && rdch) *arg_i = chn_abort(rdch); 288 else { |
290 splx(s); | |
291 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 292 *arg_i = 0; 293 } 294 break; 295 296 case AIOSYNC: 297 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 298 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 299 break; 300 /* 301 * here follow the standard ioctls (filio.h etc.) 302 */ 303 case FIONREAD: /* get # bytes to read */ | 289 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 290 *arg_i = 0; 291 } 292 break; 293 294 case AIOSYNC: 295 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 296 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 297 break; 298 /* 299 * here follow the standard ioctls (filio.h etc.) 300 */ 301 case FIONREAD: /* get # bytes to read */ |
304 if (rdch && rdch->buffer.dl) chn_dmaupdate(rdch); 305 *arg_i = rdch? rdch->buffer.rl : 0; | 302 if (rdch && rdch->buffer.dl) 303 while (chn_rdfeed(rdch) > 0); 304 *arg_i = rdch? rdch->buffer2nd.rl : 0; |
306 break; 307 308 case FIOASYNC: /*set/clear async i/o */ 309 DEB( printf("FIOASYNC\n") ; ) 310 break; 311 312 case SNDCTL_DSP_NONBLOCK: 313 case FIONBIO: /* set/clear non-blocking i/o */ --- 6 unchanged lines hidden (view full) --- 320 break; 321 322 /* 323 * Finally, here is the linux-compatible ioctl interface 324 */ 325#define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 326 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 327 case SNDCTL_DSP_GETBLKSIZE: | 305 break; 306 307 case FIOASYNC: /*set/clear async i/o */ 308 DEB( printf("FIOASYNC\n") ; ) 309 break; 310 311 case SNDCTL_DSP_NONBLOCK: 312 case FIONBIO: /* set/clear non-blocking i/o */ --- 6 unchanged lines hidden (view full) --- 319 break; 320 321 /* 322 * Finally, here is the linux-compatible ioctl interface 323 */ 324#define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 325 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 326 case SNDCTL_DSP_GETBLKSIZE: |
328 *arg_i = CHN_2NDBUFBLKSIZE; | 327 if (wrch) 328 *arg_i = wrch->blocksize2nd; 329 else if (rdch) 330 *arg_i = rdch->blocksize2nd; 331 else 332 *arg_i = 0; |
329 break ; 330 331 case SNDCTL_DSP_SETBLKSIZE: | 333 break ; 334 335 case SNDCTL_DSP_SETBLKSIZE: |
332 splx(s); | |
333 if (wrch) chn_setblocksize(wrch, *arg_i); 334 if (rdch) chn_setblocksize(rdch, *arg_i); 335 break; 336 337 case SNDCTL_DSP_RESET: 338 DEB(printf("dsp reset\n")); | 336 if (wrch) chn_setblocksize(wrch, *arg_i); 337 if (rdch) chn_setblocksize(rdch, *arg_i); 338 break; 339 340 case SNDCTL_DSP_RESET: 341 DEB(printf("dsp reset\n")); |
342 splx(s); |
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339 if (wrch) chn_abort(wrch); 340 if (rdch) chn_abort(rdch); 341 break; 342 343 case SNDCTL_DSP_SYNC: 344 DEB(printf("dsp sync\n")); 345 splx(s); | 343 if (wrch) chn_abort(wrch); 344 if (rdch) chn_abort(rdch); 345 break; 346 347 case SNDCTL_DSP_SYNC: 348 DEB(printf("dsp sync\n")); 349 splx(s); |
346 if (wrch) chn_sync(wrch, wrch->buffer.bufsize - 4); | 350 if (wrch) chn_sync(wrch, wrch->buffer2nd.bufsize - 4); |
347 break; 348 349 case SNDCTL_DSP_SPEED: 350 splx(s); 351 if (wrch) chn_setspeed(wrch, *arg_i); 352 if (rdch) chn_setspeed(rdch, *arg_i); 353 /* fallthru */ 354 --- 40 unchanged lines hidden (view full) --- 395 396 case SNDCTL_DSP_SETFRAGMENT: 397 /* XXX watch out, this is RW! */ 398 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 399 { 400 int bytes = 1 << min(*arg_i & 0xffff, 16); 401 int count = (*arg_i >> 16) & 0xffff; 402 pcm_channel *c = wrch? wrch : rdch; | 351 break; 352 353 case SNDCTL_DSP_SPEED: 354 splx(s); 355 if (wrch) chn_setspeed(wrch, *arg_i); 356 if (rdch) chn_setspeed(rdch, *arg_i); 357 /* fallthru */ 358 --- 40 unchanged lines hidden (view full) --- 399 400 case SNDCTL_DSP_SETFRAGMENT: 401 /* XXX watch out, this is RW! */ 402 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 403 { 404 int bytes = 1 << min(*arg_i & 0xffff, 16); 405 int count = (*arg_i >> 16) & 0xffff; 406 pcm_channel *c = wrch? wrch : rdch; |
403 splx(s); 404 if (rdch) chn_setblocksize(rdch, bytes); 405 if (wrch) chn_setblocksize(wrch, bytes); | 407 if (count == 0) 408 count = CHN_2NDBUFWHOLESIZE / bytes; 409 if (count < 2) { 410 ret = EINVAL; 411 break; 412 } 413 if (rdch) { 414 chn_setblocksize(rdch, bytes * count); 415 rdch->blocksize2nd = bytes; 416 rdch->fragments = rdch->buffer2nd.bufsize / rdch->blocksize2nd; 417 } 418 if (wrch) { 419 chn_setblocksize(wrch, bytes * count); 420 wrch->blocksize2nd = bytes; 421 wrch->fragments = wrch->buffer2nd.bufsize / wrch->blocksize2nd; 422 } |
406 407 /* eg: 4dwave can only interrupt at buffer midpoint, so 408 * it will force blocksize == bufsize/2 409 */ | 423 424 /* eg: 4dwave can only interrupt at buffer midpoint, so 425 * it will force blocksize == bufsize/2 426 */ |
410 count = c->buffer.bufsize / c->blocksize; 411 bytes = ffs(c->blocksize) - 1; | 427 count = c->buffer2nd.bufsize / c->blocksize2nd; 428 bytes = ffs(c->blocksize2nd) - 1; |
412 *arg_i = (count << 16) | bytes; 413 } 414 break; 415 | 429 *arg_i = (count << 16) | bytes; 430 } 431 break; 432 |
416 case SNDCTL_DSP_GETISPACE: 417 /* return space available in the input queue */ | 433 case SNDCTL_DSP_GETISPACE: /* XXX Space for reading? Makes no sense... */ 434 /* return the size of data available in the input queue */ |
418 { 419 audio_buf_info *a = (audio_buf_info *)arg; 420 if (rdch) { 421 snd_dbuf *b = &rdch->buffer; | 435 { 436 audio_buf_info *a = (audio_buf_info *)arg; 437 if (rdch) { 438 snd_dbuf *b = &rdch->buffer; |
422 if (b->dl) chn_dmaupdate(rdch); 423 a->bytes = b->fl; 424 a->fragments = 1; 425 a->fragstotal = b->bufsize / rdch->blocksize; 426 a->fragsize = rdch->blocksize; | 439 snd_dbuf *bs = &rdch->buffer2nd; 440 if (b->dl) 441 /* 442 * Suck up the secondary and DMA buffer. 443 * chn_rdfeed*() takes care of the alignment. 444 */ 445 while (chn_rdfeed(rdch) > 0); 446 a->bytes = bs->rl; 447 a->fragments = a->bytes / rdch->blocksize2nd; 448 a->fragstotal = bs->bufsize / rdch->blocksize2nd; 449 a->fragsize = rdch->blocksize2nd; |
427 } 428 } 429 break; 430 431 case SNDCTL_DSP_GETOSPACE: 432 /* return space available in the output queue */ 433 { 434 audio_buf_info *a = (audio_buf_info *)arg; 435 if (wrch) { 436 snd_dbuf *b = &wrch->buffer; | 450 } 451 } 452 break; 453 454 case SNDCTL_DSP_GETOSPACE: 455 /* return space available in the output queue */ 456 { 457 audio_buf_info *a = (audio_buf_info *)arg; 458 if (wrch) { 459 snd_dbuf *b = &wrch->buffer; |
437 if (b->dl) chn_dmaupdate(wrch); 438 a->bytes = b->fl; 439 a->fragments = 1; 440 a->fragstotal = b->bufsize / wrch->blocksize; 441 a->fragsize = wrch->blocksize; | 460 snd_dbuf *bs = &wrch->buffer2nd; 461 if (b->dl) { 462 /* 463 * Fill up the secondary and DMA buffer. 464 * chn_wrfeed*() takes care of the alignment. 465 * Check for underflow before writing into the buffers. 466 */ 467 chn_checkunderflow(wrch); 468 while (chn_wrfeed(wrch) > 0); 469 } 470 a->bytes = bs->fl; 471 a->fragments = a->bytes / wrch->blocksize2nd; 472 a->fragstotal = bs->bufsize / wrch->blocksize2nd; 473 a->fragsize = wrch->blocksize2nd; |
442 } 443 } 444 break; 445 446 case SNDCTL_DSP_GETIPTR: 447 { 448 count_info *a = (count_info *)arg; 449 if (rdch) { | 474 } 475 } 476 break; 477 478 case SNDCTL_DSP_GETIPTR: 479 { 480 count_info *a = (count_info *)arg; 481 if (rdch) { |
450 snd_dbuf *b = &rdch->buffer; 451 if (b->dl) chn_dmaupdate(rdch); 452 a->bytes = b->total; 453 a->blocks = (b->total - b->prev_total) / rdch->blocksize; 454 a->ptr = b->fp; 455 b->prev_total += a->blocks * rdch->blocksize; | 482 snd_dbuf *b = &rdch->buffer; 483 snd_dbuf *bs = &rdch->buffer2nd; 484 if (b->dl) 485 /* 486 * Suck up the secondary and DMA buffer. 487 * chn_rdfeed*() takes care of the alignment. 488 */ 489 while (chn_rdfeed(rdch) > 0); 490 a->bytes = bs->total; 491 a->blocks = bs->rl / rdch->blocksize2nd; 492 a->ptr = bs->rl % rdch->blocksize2nd; |
456 } else ret = EINVAL; 457 } 458 break; 459 460 case SNDCTL_DSP_GETOPTR: 461 { 462 count_info *a = (count_info *)arg; 463 if (wrch) { 464 snd_dbuf *b = &wrch->buffer; | 493 } else ret = EINVAL; 494 } 495 break; 496 497 case SNDCTL_DSP_GETOPTR: 498 { 499 count_info *a = (count_info *)arg; 500 if (wrch) { 501 snd_dbuf *b = &wrch->buffer; |
465 if (b->dl) chn_dmaupdate(wrch); 466 a->bytes = b->total; 467 a->blocks = (b->total - b->prev_total) / wrch->blocksize; 468 a->ptr = b->rp; 469 b->prev_total += a->blocks * wrch->blocksize; | 502 snd_dbuf *bs = &wrch->buffer2nd; 503 if (b->dl) { 504 /* 505 * Fill up the secondary and DMA buffer. 506 * chn_wrfeed*() takes care of the alignment. 507 * Check for underflow before writing into the buffers. 508 */ 509 chn_checkunderflow(wrch); 510 while (chn_wrfeed(wrch) > 0); 511 } 512 a->bytes = bs->total; 513 a->blocks = bs->rl / wrch->blocksize2nd; 514 a->ptr = bs->fl % wrch->blocksize2nd; |
470 } else ret = EINVAL; 471 } 472 break; 473 474 case SNDCTL_DSP_GETCAPS: 475 *arg_i = DSP_CAP_REALTIME | DSP_CAP_MMAP | DSP_CAP_TRIGGER; 476 if (rdch && wrch && !(d->flags & SD_F_SIMPLEX)) 477 *arg_i |= DSP_CAP_DUPLEX; --- 21 unchanged lines hidden (view full) --- 499 case SNDCTL_DSP_GETTRIGGER: 500 *arg_i = 0; 501 if (wrch && wrch->flags & CHN_F_TRIGGERED) 502 *arg_i |= PCM_ENABLE_OUTPUT; 503 if (rdch && rdch->flags & CHN_F_TRIGGERED) 504 *arg_i |= PCM_ENABLE_INPUT; 505 break; 506 | 515 } else ret = EINVAL; 516 } 517 break; 518 519 case SNDCTL_DSP_GETCAPS: 520 *arg_i = DSP_CAP_REALTIME | DSP_CAP_MMAP | DSP_CAP_TRIGGER; 521 if (rdch && wrch && !(d->flags & SD_F_SIMPLEX)) 522 *arg_i |= DSP_CAP_DUPLEX; --- 21 unchanged lines hidden (view full) --- 544 case SNDCTL_DSP_GETTRIGGER: 545 *arg_i = 0; 546 if (wrch && wrch->flags & CHN_F_TRIGGERED) 547 *arg_i |= PCM_ENABLE_OUTPUT; 548 if (rdch && rdch->flags & CHN_F_TRIGGERED) 549 *arg_i |= PCM_ENABLE_INPUT; 550 break; 551 |
507 case SNDCTL_DSP_GETODELAY: 508 if (wrch) { 509 snd_dbuf *b = &wrch->buffer; 510 if (b->dl) 511 chn_dmaupdate(wrch); 512 *arg = b->total; 513 } else 514 ret = EINVAL; 515 break; | 552 case SNDCTL_DSP_GETODELAY: 553 if (wrch) { 554 snd_dbuf *b = &wrch->buffer; 555 if (b->dl) { 556 chn_checkunderflow(wrch); 557 while (chn_wrfeed(wrch) > 0); 558 } 559 *arg = b->total; 560 } else 561 ret = EINVAL; 562 break; |
516 517 case SNDCTL_DSP_MAPINBUF: 518 case SNDCTL_DSP_MAPOUTBUF: 519 case SNDCTL_DSP_SETSYNCRO: 520 /* undocumented */ 521 522 case SNDCTL_DSP_POST: 523 case SOUND_PCM_WRITE_FILTER: --- 27 unchanged lines hidden (view full) --- 551{ 552 pcm_channel *wrch = NULL, *rdch = NULL, *c = NULL; 553 554 getchns(d, chan, &rdch, &wrch); 555 /* XXX this is broken by line 204 of vm/device_pager.c, so force write buffer */ 556 if (1 || (wrch && (nprot & PROT_WRITE))) c = wrch; 557 else if (rdch && (nprot & PROT_READ)) c = rdch; 558 if (c) { | 563 564 case SNDCTL_DSP_MAPINBUF: 565 case SNDCTL_DSP_MAPOUTBUF: 566 case SNDCTL_DSP_SETSYNCRO: 567 /* undocumented */ 568 569 case SNDCTL_DSP_POST: 570 case SOUND_PCM_WRITE_FILTER: --- 27 unchanged lines hidden (view full) --- 598{ 599 pcm_channel *wrch = NULL, *rdch = NULL, *c = NULL; 600 601 getchns(d, chan, &rdch, &wrch); 602 /* XXX this is broken by line 204 of vm/device_pager.c, so force write buffer */ 603 if (1 || (wrch && (nprot & PROT_WRITE))) c = wrch; 604 else if (rdch && (nprot & PROT_READ)) c = rdch; 605 if (c) { |
606 printf("dsp_mmap.\n"); |
|
559 c->flags |= CHN_F_MAPPED; | 607 c->flags |= CHN_F_MAPPED; |
560 return atop(vtophys(c->buffer.buf + offset)); | 608 return atop(vtophys(c->buffer2nd.buf + offset)); |
561 } 562 return -1; 563} 564 | 609 } 610 return -1; 611} 612 |