bba.c revision 1.29
1 /* $NetBSD: bba.c,v 1.29 2006/03/30 18:16:20 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /* maxine/alpha baseboard audio (bba) */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: bba.c,v 1.29 2006/03/30 18:16:20 thorpej Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/malloc.h> 46 47 #include <machine/bus.h> 48 #include <machine/autoconf.h> 49 #include <machine/cpu.h> 50 51 #include <sys/audioio.h> 52 #include <dev/audio_if.h> 53 #include <dev/auconv.h> 54 55 #include <dev/ic/am7930reg.h> 56 #include <dev/ic/am7930var.h> 57 58 #include <dev/tc/tcvar.h> 59 #include <dev/tc/ioasicreg.h> 60 #include <dev/tc/ioasicvar.h> 61 62 #ifdef AUDIO_DEBUG 63 #define DPRINTF(x) if (am7930debug) printf x 64 #else 65 #define DPRINTF(x) 66 #endif /* AUDIO_DEBUG */ 67 68 #define BBA_MAX_DMA_SEGMENTS 16 69 #define BBA_DMABUF_SIZE (BBA_MAX_DMA_SEGMENTS*IOASIC_DMA_BLOCKSIZE) 70 #define BBA_DMABUF_ALIGN IOASIC_DMA_BLOCKSIZE 71 #define BBA_DMABUF_BOUNDARY 0 72 73 struct bba_mem { 74 struct bba_mem *next; 75 bus_addr_t addr; 76 bus_size_t size; 77 caddr_t kva; 78 }; 79 80 struct bba_dma_state { 81 bus_dmamap_t dmam; /* DMA map */ 82 int active; 83 int curseg; /* current segment in DMA buffer */ 84 void (*intr)(void *); /* higher-level audio handler */ 85 void *intr_arg; 86 }; 87 88 struct bba_softc { 89 struct am7930_softc sc_am7930; /* glue to MI code */ 90 91 bus_space_tag_t sc_bst; /* IOASIC bus tag/handle */ 92 bus_space_handle_t sc_bsh; 93 bus_dma_tag_t sc_dmat; 94 bus_space_handle_t sc_codec_bsh; /* codec bus space handle */ 95 96 struct bba_mem *sc_mem_head; /* list of buffers */ 97 98 struct bba_dma_state sc_tx_dma_state; 99 struct bba_dma_state sc_rx_dma_state; 100 }; 101 102 static int bba_match(struct device *, struct cfdata *, void *); 103 static void bba_attach(struct device *, struct device *, void *); 104 105 CFATTACH_DECL(bba, sizeof(struct bba_softc), 106 bba_match, bba_attach, NULL, NULL); 107 108 /* 109 * Define our interface into the am7930 MI driver. 110 */ 111 112 stsatic uint8_t bba_codec_iread(struct am7930_softc *, int); 113 static uint16_t bba_codec_iread16(struct am7930_softc *, int); 114 static void bba_codec_iwrite(struct am7930_softc *, int, uint8_t); 115 static void bba_codec_iwrite16(struct am7930_softc *, int, uint16_t); 116 static void bba_onopen(struct am7930_softc *); 117 static void bba_onclose(struct am7930_softc *); 118 119 static stream_filter_factory_t bba_output_conv; 120 static stream_filter_factory_t bba_input_conv; 121 static int bba_output_conv_fetch_to(stream_fetcher_t *, audio_stream_t *, 122 int); 123 static int bba_input_conv_fetch_to(stream_fetcher_t *, audio_stream_t *, 124 int); 125 126 struct am7930_glue bba_glue = { 127 bba_codec_iread, 128 bba_codec_iwrite, 129 bba_codec_iread16, 130 bba_codec_iwrite16, 131 bba_onopen, 132 bba_onclose, 133 4, 134 bba_input_conv, 135 bba_output_conv, 136 }; 137 138 /* 139 * Define our interface to the higher level audio driver. 140 */ 141 142 static int bba_round_blocksize(void *, int, int, const audio_params_t *); 143 static int bba_halt_output(void *); 144 static int bba_halt_input(void *); 145 static int bba_getdev(void *, struct audio_device *); 146 static void *bba_allocm(void *, int, size_t, struct malloc_type *, int); 147 static void bba_freem(void *, void *, struct malloc_type *); 148 static size_t bba_round_buffersize(void *, int, size_t); 149 static int bba_get_props(void *); 150 static paddr_t bba_mappage(void *, void *, off_t, int); 151 static int bba_trigger_output(void *, void *, void *, int, 152 void (*)(void *), void *, 153 const audio_params_t *); 154 static int bba_trigger_input(void *, void *, void *, int, 155 void (*)(void *), void *, 156 const audio_params_t *); 157 158 static const struct audio_hw_if sa_hw_if = { 159 am7930_open, 160 am7930_close, 161 0, 162 am7930_query_encoding, 163 am7930_set_params, 164 bba_round_blocksize, /* md */ 165 am7930_commit_settings, 166 0, 167 0, 168 0, 169 0, 170 bba_halt_output, /* md */ 171 bba_halt_input, /* md */ 172 0, 173 bba_getdev, 174 0, 175 am7930_set_port, 176 am7930_get_port, 177 am7930_query_devinfo, 178 bba_allocm, /* md */ 179 bba_freem, /* md */ 180 bba_round_buffersize, /* md */ 181 bba_mappage, 182 bba_get_props, 183 bba_trigger_output, /* md */ 184 bba_trigger_input, /* md */ 185 0, 186 }; 187 188 static struct audio_device bba_device = { 189 "am7930", 190 "x", 191 "bba" 192 }; 193 194 static int bba_intr(void *); 195 static void bba_reset(struct bba_softc *, int); 196 static void bba_codec_dwrite(struct am7930_softc *, int, u_int8_t); 197 static uint8_t bba_codec_dread(struct am7930_softc *, int); 198 199 static int 200 bba_match(struct device *parent, struct cfdata *cf, void *aux) 201 { 202 struct ioasicdev_attach_args *ia; 203 204 ia = aux; 205 if (strcmp(ia->iada_modname, "isdn") != 0 && 206 strcmp(ia->iada_modname, "AMD79c30") != 0) 207 return 0; 208 209 return 1; 210 } 211 212 213 static void 214 bba_attach(struct device *parent, struct device *self, void *aux) 215 { 216 struct ioasicdev_attach_args *ia; 217 struct bba_softc *sc; 218 struct am7930_softc *asc; 219 struct ioasic_softc *iosc = device_private(parent); 220 221 ia = aux; 222 sc = device_private(self); 223 asc = &sc->sc_am7930; 224 sc->sc_bst = iosc->sc_bst; 225 sc->sc_bsh = iosc->sc_bsh; 226 sc->sc_dmat = iosc->sc_dmat; 227 228 /* get the bus space handle for codec */ 229 if (bus_space_subregion(sc->sc_bst, sc->sc_bsh, 230 ia->iada_offset, 0, &sc->sc_codec_bsh)) { 231 printf("%s: unable to map device\n", asc->sc_dev.dv_xname); 232 return; 233 } 234 235 printf("\n"); 236 237 bba_reset(sc,1); 238 239 /* 240 * Set up glue for MI code early; we use some of it here. 241 */ 242 asc->sc_glue = &bba_glue; 243 244 /* 245 * MI initialisation. We will be doing DMA. 246 */ 247 am7930_init(asc, AUDIOAMD_DMA_MODE); 248 249 ioasic_intr_establish(parent, ia->iada_cookie, TC_IPL_NONE, 250 bba_intr, sc); 251 252 audio_attach_mi(&sa_hw_if, asc, &asc->sc_dev); 253 } 254 255 256 static void 257 bba_onopen(struct am7930_softc *sc) 258 { 259 } 260 261 262 static void 263 bba_onclose(struct am7930_softc *sc) 264 { 265 } 266 267 268 static void 269 bba_reset(struct bba_softc *sc, int reset) 270 { 271 uint32_t ssr; 272 273 /* disable any DMA and reset the codec */ 274 ssr = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR); 275 ssr &= ~(IOASIC_CSR_DMAEN_ISDN_T | IOASIC_CSR_DMAEN_ISDN_R); 276 if (reset) 277 ssr &= ~IOASIC_CSR_ISDN_ENABLE; 278 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); 279 DELAY(10); /* 400ns required for codec to reset */ 280 281 /* initialise DMA pointers */ 282 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_X_DMAPTR, -1); 283 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_X_NEXTPTR, -1); 284 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_R_DMAPTR, -1); 285 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_R_NEXTPTR, -1); 286 287 /* take out of reset state */ 288 if (reset) { 289 ssr |= IOASIC_CSR_ISDN_ENABLE; 290 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); 291 } 292 293 } 294 295 296 static void * 297 bba_allocm(void *addr, int direction, size_t size, 298 struct malloc_type *pool, int flags) 299 { 300 struct am7930_softc *asc; 301 struct bba_softc *sc; 302 bus_dma_segment_t seg; 303 int rseg; 304 caddr_t kva; 305 struct bba_mem *m; 306 int w; 307 int state; 308 309 DPRINTF(("bba_allocm: size = %zu\n", size)); 310 asc = addr; 311 sc = addr; 312 state = 0; 313 w = (flags & M_NOWAIT) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK; 314 315 if (bus_dmamem_alloc(sc->sc_dmat, size, BBA_DMABUF_ALIGN, 316 BBA_DMABUF_BOUNDARY, &seg, 1, &rseg, w)) { 317 printf("%s: can't allocate DMA buffer\n", 318 asc->sc_dev.dv_xname); 319 goto bad; 320 } 321 state |= 1; 322 323 if (bus_dmamem_map(sc->sc_dmat, &seg, rseg, size, 324 &kva, w | BUS_DMA_COHERENT)) { 325 printf("%s: can't map DMA buffer\n", asc->sc_dev.dv_xname); 326 goto bad; 327 } 328 state |= 2; 329 330 m = malloc(sizeof(struct bba_mem), pool, flags); 331 if (m == NULL) 332 goto bad; 333 m->addr = seg.ds_addr; 334 m->size = seg.ds_len; 335 m->kva = kva; 336 m->next = sc->sc_mem_head; 337 sc->sc_mem_head = m; 338 339 return (void *)kva; 340 341 bad: 342 if (state & 2) 343 bus_dmamem_unmap(sc->sc_dmat, kva, size); 344 if (state & 1) 345 bus_dmamem_free(sc->sc_dmat, &seg, 1); 346 return NULL; 347 } 348 349 350 static void 351 bba_freem(void *addr, void *ptr, struct malloc_type *pool) 352 { 353 struct bba_softc *sc; 354 struct bba_mem **mp, *m; 355 bus_dma_segment_t seg; 356 caddr_t kva; 357 358 sc = addr; 359 kva = (caddr_t)addr; 360 for (mp = &sc->sc_mem_head; *mp && (*mp)->kva != kva; 361 mp = &(*mp)->next) 362 continue; 363 m = *mp; 364 if (m == NULL) { 365 printf("bba_freem: freeing unallocated memory\n"); 366 return; 367 } 368 *mp = m->next; 369 bus_dmamem_unmap(sc->sc_dmat, kva, m->size); 370 371 seg.ds_addr = m->addr; 372 seg.ds_len = m->size; 373 bus_dmamem_free(sc->sc_dmat, &seg, 1); 374 free(m, pool); 375 } 376 377 378 static size_t 379 bba_round_buffersize(void *addr, int direction, size_t size) 380 { 381 382 DPRINTF(("bba_round_buffersize: size=%zu\n", size)); 383 return size > BBA_DMABUF_SIZE ? BBA_DMABUF_SIZE : 384 roundup(size, IOASIC_DMA_BLOCKSIZE); 385 } 386 387 388 static int 389 bba_halt_output(void *addr) 390 { 391 struct bba_softc *sc; 392 struct bba_dma_state *d; 393 uint32_t ssr; 394 395 sc = addr; 396 d = &sc->sc_tx_dma_state; 397 /* disable any DMA */ 398 ssr = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR); 399 ssr &= ~IOASIC_CSR_DMAEN_ISDN_T; 400 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); 401 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_X_DMAPTR, -1); 402 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_X_NEXTPTR, -1); 403 404 if (d->active) { 405 bus_dmamap_unload(sc->sc_dmat, d->dmam); 406 bus_dmamap_destroy(sc->sc_dmat, d->dmam); 407 d->active = 0; 408 } 409 410 return 0; 411 } 412 413 414 static int 415 bba_halt_input(void *addr) 416 { 417 struct bba_softc *sc; 418 struct bba_dma_state *d; 419 uint32_t ssr; 420 421 sc = addr; 422 d = &sc->sc_rx_dma_state; 423 /* disable any DMA */ 424 ssr = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR); 425 ssr &= ~IOASIC_CSR_DMAEN_ISDN_R; 426 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); 427 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_R_DMAPTR, -1); 428 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_R_NEXTPTR, -1); 429 430 if (d->active) { 431 bus_dmamap_unload(sc->sc_dmat, d->dmam); 432 bus_dmamap_destroy(sc->sc_dmat, d->dmam); 433 d->active = 0; 434 } 435 436 return 0; 437 } 438 439 440 static int 441 bba_getdev(void *addr, struct audio_device *retp) 442 { 443 444 *retp = bba_device; 445 return 0; 446 } 447 448 449 static int 450 bba_trigger_output(void *addr, void *start, void *end, int blksize, 451 void (*intr)(void *), void *arg, 452 const audio_params_t *param) 453 { 454 struct bba_softc *sc; 455 struct bba_dma_state *d; 456 uint32_t ssr; 457 tc_addr_t phys, nphys; 458 int state; 459 460 DPRINTF(("bba_trigger_output: sc=%p start=%p end=%p blksize=%d intr=%p(%p)\n", 461 addr, start, end, blksize, intr, arg)); 462 sc = addr; 463 d = &sc->sc_tx_dma_state; 464 state = 0; 465 466 /* disable any DMA */ 467 ssr = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR); 468 ssr &= ~IOASIC_CSR_DMAEN_ISDN_T; 469 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); 470 471 if (bus_dmamap_create(sc->sc_dmat, (char *)end - (char *)start, 472 BBA_MAX_DMA_SEGMENTS, IOASIC_DMA_BLOCKSIZE, 473 BBA_DMABUF_BOUNDARY, BUS_DMA_NOWAIT, &d->dmam)) { 474 printf("bba_trigger_output: can't create DMA map\n"); 475 goto bad; 476 } 477 state |= 1; 478 479 if (bus_dmamap_load(sc->sc_dmat, d->dmam, start, 480 (char *)end - (char *)start, NULL, BUS_DMA_WRITE|BUS_DMA_NOWAIT)) { 481 printf("bba_trigger_output: can't load DMA map\n"); 482 goto bad; 483 } 484 state |= 2; 485 486 d->intr = intr; 487 d->intr_arg = arg; 488 d->curseg = 1; 489 490 /* get physical address of buffer start */ 491 phys = (tc_addr_t)d->dmam->dm_segs[0].ds_addr; 492 nphys = (tc_addr_t)d->dmam->dm_segs[1].ds_addr; 493 494 /* setup DMA pointer */ 495 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_X_DMAPTR, 496 IOASIC_DMA_ADDR(phys)); 497 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_X_NEXTPTR, 498 IOASIC_DMA_ADDR(nphys)); 499 500 /* kick off DMA */ 501 ssr |= IOASIC_CSR_DMAEN_ISDN_T; 502 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); 503 504 d->active = 1; 505 506 return 0; 507 508 bad: 509 if (state & 2) 510 bus_dmamap_unload(sc->sc_dmat, d->dmam); 511 if (state & 1) 512 bus_dmamap_destroy(sc->sc_dmat, d->dmam); 513 return 1; 514 } 515 516 517 static int 518 bba_trigger_input(void *addr, void *start, void *end, int blksize, 519 void (*intr)(void *), void *arg, const audio_params_t *param) 520 { 521 struct bba_softc *sc; 522 struct bba_dma_state *d; 523 tc_addr_t phys, nphys; 524 u_int32_t ssr; 525 int state = 0; 526 527 DPRINTF(("bba_trigger_input: sc=%p start=%p end=%p blksize=%d intr=%p(%p)\n", 528 addr, start, end, blksize, intr, arg)); 529 sc = (struct bba_softc *)addr; 530 d = &sc->sc_rx_dma_state; 531 state = 0; 532 533 /* disable any DMA */ 534 ssr = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR); 535 ssr &= ~IOASIC_CSR_DMAEN_ISDN_R; 536 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); 537 538 if (bus_dmamap_create(sc->sc_dmat, (char *)end - (char *)start, 539 BBA_MAX_DMA_SEGMENTS, IOASIC_DMA_BLOCKSIZE, 540 BBA_DMABUF_BOUNDARY, BUS_DMA_NOWAIT, &d->dmam)) { 541 printf("bba_trigger_input: can't create DMA map\n"); 542 goto bad; 543 } 544 state |= 1; 545 546 if (bus_dmamap_load(sc->sc_dmat, d->dmam, start, 547 (char *)end - (char *)start, NULL, BUS_DMA_READ|BUS_DMA_NOWAIT)) { 548 printf("bba_trigger_input: can't load DMA map\n"); 549 goto bad; 550 } 551 state |= 2; 552 553 d->intr = intr; 554 d->intr_arg = arg; 555 d->curseg = 1; 556 557 /* get physical address of buffer start */ 558 phys = (tc_addr_t)d->dmam->dm_segs[0].ds_addr; 559 nphys = (tc_addr_t)d->dmam->dm_segs[1].ds_addr; 560 561 /* setup DMA pointer */ 562 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_R_DMAPTR, 563 IOASIC_DMA_ADDR(phys)); 564 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_ISDN_R_NEXTPTR, 565 IOASIC_DMA_ADDR(nphys)); 566 567 /* kick off DMA */ 568 ssr |= IOASIC_CSR_DMAEN_ISDN_R; 569 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); 570 571 d->active = 1; 572 573 return 0; 574 575 bad: 576 if (state & 2) 577 bus_dmamap_unload(sc->sc_dmat, d->dmam); 578 if (state & 1) 579 bus_dmamap_destroy(sc->sc_dmat, d->dmam); 580 return 1; 581 } 582 583 static int 584 bba_intr(void *addr) 585 { 586 struct bba_softc *sc; 587 struct bba_dma_state *d; 588 tc_addr_t nphys; 589 int s, mask; 590 591 sc = addr; 592 s = splaudio(); 593 594 mask = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_INTR); 595 596 if (mask & IOASIC_INTR_ISDN_TXLOAD) { 597 d = &sc->sc_tx_dma_state; 598 d->curseg = (d->curseg+1) % d->dmam->dm_nsegs; 599 nphys = (tc_addr_t)d->dmam->dm_segs[d->curseg].ds_addr; 600 bus_space_write_4(sc->sc_bst, sc->sc_bsh, 601 IOASIC_ISDN_X_NEXTPTR, IOASIC_DMA_ADDR(nphys)); 602 if (d->intr != NULL) 603 (*d->intr)(d->intr_arg); 604 } 605 if (mask & IOASIC_INTR_ISDN_RXLOAD) { 606 d = &sc->sc_rx_dma_state; 607 d->curseg = (d->curseg+1) % d->dmam->dm_nsegs; 608 nphys = (tc_addr_t)d->dmam->dm_segs[d->curseg].ds_addr; 609 bus_space_write_4(sc->sc_bst, sc->sc_bsh, 610 IOASIC_ISDN_R_NEXTPTR, IOASIC_DMA_ADDR(nphys)); 611 if (d->intr != NULL) 612 (*d->intr)(d->intr_arg); 613 } 614 615 splx(s); 616 617 return 0; 618 } 619 620 static int 621 bba_get_props(void *addr) 622 { 623 624 return AUDIO_PROP_MMAP | am7930_get_props(addr); 625 } 626 627 static paddr_t 628 bba_mappage(void *addr, void *mem, off_t offset, int prot) 629 { 630 struct bba_softc *sc; 631 struct bba_mem **mp; 632 bus_dma_segment_t seg; 633 caddr_t kva; 634 635 sc = addr; 636 kva = (caddr_t)mem; 637 for (mp = &sc->sc_mem_head; *mp && (*mp)->kva != kva; 638 mp = &(*mp)->next) 639 continue; 640 if (*mp == NULL || offset < 0) { 641 return -1; 642 } 643 644 seg.ds_addr = (*mp)->addr; 645 seg.ds_len = (*mp)->size; 646 647 return bus_dmamem_mmap(sc->sc_dmat, &seg, 1, offset, 648 prot, BUS_DMA_WAITOK); 649 } 650 651 static stream_filter_t * 652 bba_input_conv(struct audio_softc *sc, const audio_params_t *from, 653 const audio_params_t *to) 654 { 655 return auconv_nocontext_filter_factory(bba_input_conv_fetch_to); 656 } 657 658 static int 659 bba_input_conv_fetch_to(stream_fetcher_t *self, audio_stream_t *dst, 660 int max_used) 661 { 662 stream_filter_t *this; 663 int m, err; 664 665 this = (stream_filter_t *)self; 666 if ((err = this->prev->fetch_to(this->prev, this->src, max_used * 4))) 667 return err; 668 m = dst->end - dst->start; 669 m = min(m, max_used); 670 FILTER_LOOP_PROLOGUE(this->src, 4, dst, 1, m) { 671 *d = ((*(const uint32_t *)s) >> 16) & 0xff; 672 } FILTER_LOOP_EPILOGUE(this->src, dst); 673 return 0; 674 } 675 676 static stream_filter_t * 677 bba_output_conv(struct audio_softc *sc, const audio_params_t *from, 678 const audio_params_t *to) 679 { 680 return auconv_nocontext_filter_factory(bba_output_conv_fetch_to); 681 } 682 683 static int 684 bba_output_conv_fetch_to(stream_fetcher_t *self, audio_stream_t *dst, 685 int max_used) 686 { 687 stream_filter_t *this; 688 int m, err; 689 690 this = (stream_filter_t *)self; 691 max_used = (max_used + 3) & ~3; 692 if ((err = this->prev->fetch_to(this->prev, this->src, max_used / 4))) 693 return err; 694 m = (dst->end - dst->start) & ~3; 695 m = min(m, max_used); 696 FILTER_LOOP_PROLOGUE(this->src, 1, dst, 4, m) { 697 *(uint32_t *)d = (*s << 16); 698 } FILTER_LOOP_EPILOGUE(this->src, dst); 699 return 0; 700 } 701 702 static int 703 bba_round_blocksize(void *addr, int blk, int mode, const audio_params_t *param) 704 { 705 706 return IOASIC_DMA_BLOCKSIZE; 707 } 708 709 710 /* indirect write */ 711 static void 712 bba_codec_iwrite(struct am7930_softc *sc, int reg, uint8_t val) 713 { 714 715 DPRINTF(("bba_codec_iwrite(): sc=%p, reg=%d, val=%d\n", sc, reg, val)); 716 bba_codec_dwrite(sc, AM7930_DREG_CR, reg); 717 bba_codec_dwrite(sc, AM7930_DREG_DR, val); 718 } 719 720 721 static void 722 bba_codec_iwrite16(struct am7930_softc *sc, int reg, uint16_t val) 723 { 724 725 DPRINTF(("bba_codec_iwrite16(): sc=%p, reg=%d, val=%d\n", sc, reg, val)); 726 bba_codec_dwrite(sc, AM7930_DREG_CR, reg); 727 bba_codec_dwrite(sc, AM7930_DREG_DR, val); 728 bba_codec_dwrite(sc, AM7930_DREG_DR, val>>8); 729 } 730 731 732 static uint16_t 733 bba_codec_iread16(struct am7930_softc *sc, int reg) 734 { 735 uint16_t val; 736 737 DPRINTF(("bba_codec_iread16(): sc=%p, reg=%d\n", sc, reg)); 738 bba_codec_dwrite(sc, AM7930_DREG_CR, reg); 739 val = bba_codec_dread(sc, AM7930_DREG_DR) << 8; 740 val |= bba_codec_dread(sc, AM7930_DREG_DR); 741 742 return val; 743 } 744 745 746 /* indirect read */ 747 static uint8_t 748 bba_codec_iread(struct am7930_softc *sc, int reg) 749 { 750 uint8_t val; 751 752 DPRINTF(("bba_codec_iread(): sc=%p, reg=%d\n", sc, reg)); 753 bba_codec_dwrite(sc, AM7930_DREG_CR, reg); 754 val = bba_codec_dread(sc, AM7930_DREG_DR); 755 756 DPRINTF(("read 0x%x (%d)\n", val, val)); 757 758 return val; 759 } 760 761 /* direct write */ 762 static void 763 bba_codec_dwrite(struct am7930_softc *asc, int reg, uint8_t val) 764 { 765 struct bba_softc *sc; 766 767 sc = (struct bba_softc *)asc; 768 DPRINTF(("bba_codec_dwrite(): sc=%p, reg=%d, val=%d\n", sc, reg, val)); 769 770 #if defined(__alpha__) 771 bus_space_write_4(sc->sc_bst, sc->sc_codec_bsh, 772 reg << 2, val << 8); 773 #else 774 bus_space_write_4(sc->sc_bst, sc->sc_codec_bsh, 775 reg << 6, val); 776 #endif 777 } 778 779 /* direct read */ 780 static uint8_t 781 bba_codec_dread(struct am7930_softc *asc, int reg) 782 { 783 struct bba_softc *sc; 784 785 sc = (struct bba_softc *)asc; 786 DPRINTF(("bba_codec_dread(): sc=%p, reg=%d\n", sc, reg)); 787 788 #if defined(__alpha__) 789 return ((bus_space_read_4(sc->sc_bst, sc->sc_codec_bsh, 790 reg << 2) >> 8) & 0xff); 791 #else 792 return (bus_space_read_4(sc->sc_bst, sc->sc_codec_bsh, 793 reg << 6) & 0xff); 794 #endif 795 } 796
Indexes created Fri Sep 26 08:10:20 GMT 2025