1187692Snwhitehorn/*- 2187692Snwhitehorn * Copyright 2008 by Marco Trillo. All rights reserved. 3187692Snwhitehorn * 4187692Snwhitehorn * Redistribution and use in source and binary forms, with or without 5187692Snwhitehorn * modification, are permitted provided that the following conditions 6187692Snwhitehorn * are met: 7187692Snwhitehorn * 1. Redistributions of source code must retain the above copyright 8187692Snwhitehorn * notice, this list of conditions and the following disclaimer. 9187692Snwhitehorn * 2. Redistributions in binary form must reproduce the above copyright 10187692Snwhitehorn * notice, this list of conditions and the following disclaimer in the 11187692Snwhitehorn * documentation and/or other materials provided with the distribution. 12187692Snwhitehorn * 13187692Snwhitehorn * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14187692Snwhitehorn * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15187692Snwhitehorn * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16187692Snwhitehorn * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17187692Snwhitehorn * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 18187692Snwhitehorn * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19187692Snwhitehorn * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 20187692Snwhitehorn * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 21187692Snwhitehorn * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22187692Snwhitehorn * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23187692Snwhitehorn * SUCH DAMAGE. 24187692Snwhitehorn * 25187692Snwhitehorn * $FreeBSD$ 26187692Snwhitehorn */ 27187692Snwhitehorn 28187692Snwhitehorn/* 29187692Snwhitehorn * Apple Onboard Audio (AOA). 30187692Snwhitehorn */ 31187692Snwhitehorn 32187692Snwhitehorn#include <sys/cdefs.h> 33187692Snwhitehorn 34187692Snwhitehorn#include <sys/param.h> 35187692Snwhitehorn#include <sys/systm.h> 36187692Snwhitehorn#include <sys/kernel.h> 37187692Snwhitehorn#include <sys/bus.h> 38187692Snwhitehorn#include <sys/malloc.h> 39187692Snwhitehorn#include <sys/lock.h> 40187692Snwhitehorn#include <sys/mutex.h> 41187692Snwhitehorn#include <machine/dbdma.h> 42187692Snwhitehorn#include <machine/resource.h> 43187692Snwhitehorn#include <machine/bus.h> 44187692Snwhitehorn#include <sys/rman.h> 45187692Snwhitehorn#include <dev/ofw/ofw_bus.h> 46193640Sariff 47193640Sariff#ifdef HAVE_KERNEL_OPTION_HEADERS 48193640Sariff#include "opt_snd.h" 49193640Sariff#endif 50193640Sariff 51187692Snwhitehorn#include <dev/sound/pcm/sound.h> 52187692Snwhitehorn#include <dev/sound/macio/aoa.h> 53193640Sariff 54187692Snwhitehorn#include "mixer_if.h" 55187692Snwhitehorn 56187692Snwhitehornstruct aoa_dma { 57187692Snwhitehorn struct mtx mutex; 58187692Snwhitehorn struct resource *reg; /* DBDMA registers */ 59187692Snwhitehorn dbdma_channel_t *channel; /* DBDMA channel */ 60187692Snwhitehorn bus_dma_tag_t tag; /* bus_dma tag */ 61187692Snwhitehorn struct pcm_channel *pcm; /* PCM channel */ 62187692Snwhitehorn struct snd_dbuf *buf; /* PCM buffer */ 63187692Snwhitehorn u_int slots; /* # of slots */ 64187692Snwhitehorn u_int slot; /* current slot */ 65187692Snwhitehorn u_int bufsz; /* buffer size */ 66187692Snwhitehorn u_int blksz; /* block size */ 67187692Snwhitehorn int running; 68187692Snwhitehorn}; 69187692Snwhitehorn 70187692Snwhitehornstatic void 71187692Snwhitehornaoa_dma_set_program(struct aoa_dma *dma) 72187692Snwhitehorn{ 73187692Snwhitehorn u_int32_t addr; 74187692Snwhitehorn int i; 75187692Snwhitehorn 76187692Snwhitehorn addr = (u_int32_t) sndbuf_getbufaddr(dma->buf); 77187692Snwhitehorn KASSERT(dma->bufsz == sndbuf_getsize(dma->buf), ("bad size")); 78187692Snwhitehorn 79187692Snwhitehorn dma->slots = dma->bufsz / dma->blksz; 80187692Snwhitehorn 81187692Snwhitehorn for (i = 0; i < dma->slots; ++i) { 82187692Snwhitehorn dbdma_insert_command(dma->channel, 83187692Snwhitehorn i, /* slot */ 84187692Snwhitehorn DBDMA_OUTPUT_MORE, /* command */ 85187692Snwhitehorn 0, /* stream */ 86187692Snwhitehorn addr, /* data */ 87187692Snwhitehorn dma->blksz, /* count */ 88187692Snwhitehorn DBDMA_ALWAYS, /* interrupt */ 89187692Snwhitehorn DBDMA_COND_TRUE, /* branch */ 90187692Snwhitehorn DBDMA_NEVER, /* wait */ 91187692Snwhitehorn dma->slots + 1 /* branch_slot */ 92187692Snwhitehorn ); 93187692Snwhitehorn 94187692Snwhitehorn addr += dma->blksz; 95187692Snwhitehorn } 96187692Snwhitehorn 97187692Snwhitehorn /* Branch back to beginning. */ 98187692Snwhitehorn dbdma_insert_branch(dma->channel, dma->slots, 0); 99187692Snwhitehorn 100187692Snwhitehorn /* STOP command to branch when S0 is asserted. */ 101187692Snwhitehorn dbdma_insert_stop(dma->channel, dma->slots + 1); 102187692Snwhitehorn 103187692Snwhitehorn /* Set S0 as the condition to branch to STOP. */ 104187692Snwhitehorn dbdma_set_branch_selector(dma->channel, 1 << 0, 1 << 0); 105187692Snwhitehorn dbdma_set_device_status(dma->channel, 1 << 0, 0); 106187692Snwhitehorn 107187692Snwhitehorn dbdma_sync_commands(dma->channel, BUS_DMASYNC_PREWRITE); 108187692Snwhitehorn} 109187692Snwhitehorn 110187692Snwhitehorn#define AOA_BUFFER_SIZE 65536 111187692Snwhitehorn 112187692Snwhitehornstatic struct aoa_dma * 113188259Snwhitehornaoa_dma_create(struct aoa_softc *sc) 114187692Snwhitehorn{ 115187692Snwhitehorn struct aoa_dma *dma; 116187692Snwhitehorn bus_dma_tag_t tag; 117187692Snwhitehorn int err; 118188259Snwhitehorn device_t self; 119187692Snwhitehorn 120188259Snwhitehorn self = sc->sc_dev; 121187692Snwhitehorn err = bus_dma_tag_create(bus_get_dma_tag(self), 122187692Snwhitehorn 4, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 123187692Snwhitehorn AOA_BUFFER_SIZE, 1, AOA_BUFFER_SIZE, 0, NULL, NULL, &tag); 124187692Snwhitehorn if (err != 0) 125187692Snwhitehorn return (NULL); 126187692Snwhitehorn 127187692Snwhitehorn dma = malloc(sizeof(*dma), M_DEVBUF, M_WAITOK | M_ZERO); 128187692Snwhitehorn dma->tag = tag; 129187692Snwhitehorn dma->bufsz = AOA_BUFFER_SIZE; 130187692Snwhitehorn dma->blksz = PAGE_SIZE; /* initial blocksize */ 131187692Snwhitehorn 132187692Snwhitehorn mtx_init(&dma->mutex, "AOA", NULL, MTX_DEF); 133187692Snwhitehorn 134187692Snwhitehorn sc->sc_intrp = dma; 135187692Snwhitehorn 136187692Snwhitehorn return (dma); 137187692Snwhitehorn} 138187692Snwhitehorn 139187692Snwhitehornstatic void 140187692Snwhitehornaoa_dma_delete(struct aoa_dma *dma) 141187692Snwhitehorn{ 142187692Snwhitehorn bus_dma_tag_destroy(dma->tag); 143187692Snwhitehorn mtx_destroy(&dma->mutex); 144187692Snwhitehorn free(dma, M_DEVBUF); 145187692Snwhitehorn} 146187692Snwhitehorn 147193640Sariffstatic u_int32_t 148187692Snwhitehornaoa_chan_setblocksize(kobj_t obj, void *data, u_int32_t blocksz) 149187692Snwhitehorn{ 150187692Snwhitehorn struct aoa_dma *dma = data; 151187692Snwhitehorn int err, lz; 152187692Snwhitehorn 153187692Snwhitehorn DPRINTF(("aoa_chan_setblocksize: blocksz = %u, dma->blksz = %u\n", 154187692Snwhitehorn blocksz, dma->blksz)); 155187692Snwhitehorn KASSERT(!dma->running, ("dma is running")); 156187692Snwhitehorn KASSERT(blocksz > 0, ("bad blocksz")); 157187692Snwhitehorn 158187692Snwhitehorn /* Round blocksz down to a power of two... */ 159187692Snwhitehorn __asm volatile ("cntlzw %0,%1" : "=r"(lz) : "r"(blocksz)); 160187692Snwhitehorn blocksz = 1 << (31 - lz); 161187692Snwhitehorn DPRINTF(("blocksz = %u\n", blocksz)); 162187692Snwhitehorn 163187692Snwhitehorn /* ...but no more than the buffer. */ 164187692Snwhitehorn if (blocksz > dma->bufsz) 165187692Snwhitehorn blocksz = dma->bufsz; 166187692Snwhitehorn 167187692Snwhitehorn err = sndbuf_resize(dma->buf, dma->bufsz / blocksz, blocksz); 168187692Snwhitehorn if (err != 0) { 169187692Snwhitehorn DPRINTF(("sndbuf_resize returned %d\n", err)); 170187692Snwhitehorn return (0); 171187692Snwhitehorn } 172187692Snwhitehorn 173187692Snwhitehorn if (blocksz == dma->blksz) 174187692Snwhitehorn return (dma->blksz); 175187692Snwhitehorn 176187692Snwhitehorn /* One slot per block plus branch to 0 plus STOP. */ 177187692Snwhitehorn err = dbdma_resize_channel(dma->channel, 2 + dma->bufsz / blocksz); 178187692Snwhitehorn if (err != 0) { 179187692Snwhitehorn DPRINTF(("dbdma_resize_channel returned %d\n", err)); 180187692Snwhitehorn return (0); 181187692Snwhitehorn } 182187692Snwhitehorn 183187692Snwhitehorn /* Set the new blocksize. */ 184187692Snwhitehorn dma->blksz = blocksz; 185187692Snwhitehorn aoa_dma_set_program(dma); 186187692Snwhitehorn 187187692Snwhitehorn return (dma->blksz); 188187692Snwhitehorn} 189187692Snwhitehorn 190187692Snwhitehornstatic int 191187692Snwhitehornaoa_chan_setformat(kobj_t obj, void *data, u_int32_t format) 192187692Snwhitehorn{ 193187692Snwhitehorn DPRINTF(("aoa_chan_setformat: format = %u\n", format)); 194187692Snwhitehorn 195193640Sariff if (format != SND_FORMAT(AFMT_S16_BE, 2, 0)) 196187692Snwhitehorn return (EINVAL); 197187692Snwhitehorn 198187692Snwhitehorn return (0); 199187692Snwhitehorn} 200187692Snwhitehorn 201193640Sariffstatic u_int32_t 202187692Snwhitehornaoa_chan_setspeed(kobj_t obj, void *data, u_int32_t speed) 203187692Snwhitehorn{ 204187692Snwhitehorn DPRINTF(("aoa_chan_setspeed: speed = %u\n", speed)); 205187692Snwhitehorn 206187692Snwhitehorn return (44100); 207187692Snwhitehorn} 208187692Snwhitehorn 209193640Sariffstatic u_int32_t 210187692Snwhitehornaoa_chan_getptr(kobj_t obj, void *data) 211187692Snwhitehorn{ 212187692Snwhitehorn struct aoa_dma *dma = data; 213187692Snwhitehorn 214187692Snwhitehorn if (!dma->running) 215187692Snwhitehorn return (0); 216187692Snwhitehorn 217187692Snwhitehorn return (dma->slot * dma->blksz); 218187692Snwhitehorn} 219187692Snwhitehorn 220187692Snwhitehornstatic void * 221187692Snwhitehornaoa_chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, 222187692Snwhitehorn struct pcm_channel *c, int dir) 223187692Snwhitehorn{ 224188259Snwhitehorn struct aoa_softc *sc = devinfo; 225187692Snwhitehorn struct aoa_dma *dma; 226187692Snwhitehorn int max_slots, err; 227187692Snwhitehorn 228187692Snwhitehorn KASSERT(dir == PCMDIR_PLAY, ("bad dir")); 229187692Snwhitehorn 230188259Snwhitehorn dma = aoa_dma_create(sc); 231187692Snwhitehorn if (!dma) 232187692Snwhitehorn return (NULL); 233187692Snwhitehorn dma->pcm = c; 234187692Snwhitehorn dma->buf = b; 235187692Snwhitehorn dma->reg = sc->sc_odma; 236187692Snwhitehorn 237187692Snwhitehorn /* One slot per block, plus branch to 0 plus STOP. */ 238187692Snwhitehorn max_slots = 2 + dma->bufsz / dma->blksz; 239188259Snwhitehorn err = dbdma_allocate_channel(dma->reg, 0, bus_get_dma_tag(sc->sc_dev), 240187692Snwhitehorn max_slots, &dma->channel ); 241187692Snwhitehorn if (err != 0) { 242187692Snwhitehorn aoa_dma_delete(dma); 243187692Snwhitehorn return (NULL); 244187692Snwhitehorn } 245187692Snwhitehorn 246187692Snwhitehorn if (sndbuf_alloc(dma->buf, dma->tag, 0, dma->bufsz) != 0) { 247187692Snwhitehorn dbdma_free_channel(dma->channel); 248187692Snwhitehorn aoa_dma_delete(dma); 249187692Snwhitehorn return (NULL); 250187692Snwhitehorn } 251187692Snwhitehorn 252187692Snwhitehorn aoa_dma_set_program(dma); 253187692Snwhitehorn 254187692Snwhitehorn return (dma); 255187692Snwhitehorn} 256187692Snwhitehorn 257187692Snwhitehornstatic int 258187692Snwhitehornaoa_chan_trigger(kobj_t obj, void *data, int go) 259187692Snwhitehorn{ 260187692Snwhitehorn struct aoa_dma *dma = data; 261187692Snwhitehorn int i; 262187692Snwhitehorn 263187692Snwhitehorn switch (go) { 264187692Snwhitehorn case PCMTRIG_START: 265187692Snwhitehorn 266187692Snwhitehorn /* Start the DMA. */ 267187692Snwhitehorn dma->running = 1; 268187692Snwhitehorn 269187692Snwhitehorn dma->slot = 0; 270187692Snwhitehorn dbdma_set_current_cmd(dma->channel, dma->slot); 271187692Snwhitehorn 272187692Snwhitehorn dbdma_run(dma->channel); 273187692Snwhitehorn 274187692Snwhitehorn return (0); 275187692Snwhitehorn 276187692Snwhitehorn case PCMTRIG_STOP: 277187692Snwhitehorn case PCMTRIG_ABORT: 278187692Snwhitehorn 279187692Snwhitehorn mtx_lock(&dma->mutex); 280187692Snwhitehorn 281187692Snwhitehorn dma->running = 0; 282187692Snwhitehorn 283187692Snwhitehorn /* Make it branch to the STOP command. */ 284187692Snwhitehorn dbdma_set_device_status(dma->channel, 1 << 0, 1 << 0); 285187692Snwhitehorn 286187692Snwhitehorn /* XXX should wait for DBDMA_ACTIVE to clear. */ 287187692Snwhitehorn DELAY(40000); 288187692Snwhitehorn 289187692Snwhitehorn /* Reset the DMA. */ 290187692Snwhitehorn dbdma_stop(dma->channel); 291187692Snwhitehorn dbdma_set_device_status(dma->channel, 1 << 0, 0); 292187692Snwhitehorn 293187692Snwhitehorn for (i = 0; i < dma->slots; ++i) 294187692Snwhitehorn dbdma_clear_cmd_status(dma->channel, i); 295187692Snwhitehorn 296187692Snwhitehorn mtx_unlock(&dma->mutex); 297187692Snwhitehorn 298187692Snwhitehorn return (0); 299187692Snwhitehorn } 300187692Snwhitehorn 301187692Snwhitehorn return (0); 302187692Snwhitehorn} 303187692Snwhitehorn 304187692Snwhitehornstatic int 305187692Snwhitehornaoa_chan_free(kobj_t obj, void *data) 306187692Snwhitehorn{ 307187692Snwhitehorn struct aoa_dma *dma = data; 308187692Snwhitehorn 309187692Snwhitehorn sndbuf_free(dma->buf); 310187692Snwhitehorn dbdma_free_channel(dma->channel); 311187692Snwhitehorn aoa_dma_delete(dma); 312187692Snwhitehorn 313187692Snwhitehorn return (0); 314187692Snwhitehorn} 315187692Snwhitehorn 316187692Snwhitehornvoid 317188259Snwhitehornaoa_interrupt(void *xsc) 318187692Snwhitehorn{ 319188259Snwhitehorn struct aoa_softc *sc = xsc; 320187692Snwhitehorn struct aoa_dma *dma; 321187692Snwhitehorn 322187692Snwhitehorn if (!(dma = sc->sc_intrp) || !dma->running) 323187692Snwhitehorn return; 324187692Snwhitehorn 325187692Snwhitehorn mtx_lock(&dma->mutex); 326187692Snwhitehorn 327187692Snwhitehorn while (dbdma_get_cmd_status(dma->channel, dma->slot)) { 328187692Snwhitehorn 329187692Snwhitehorn dbdma_clear_cmd_status(dma->channel, dma->slot); 330187692Snwhitehorn dma->slot = (dma->slot + 1) % dma->slots; 331187692Snwhitehorn 332187692Snwhitehorn mtx_unlock(&dma->mutex); 333187692Snwhitehorn chn_intr(dma->pcm); 334187692Snwhitehorn mtx_lock(&dma->mutex); 335187692Snwhitehorn } 336187692Snwhitehorn 337187692Snwhitehorn mtx_unlock(&dma->mutex); 338187692Snwhitehorn} 339187692Snwhitehorn 340187692Snwhitehornstatic u_int32_t sc_fmt[] = { 341193640Sariff SND_FORMAT(AFMT_S16_BE, 2, 0), 342187692Snwhitehorn 0 343187692Snwhitehorn}; 344187692Snwhitehornstatic struct pcmchan_caps aoa_caps = {44100, 44100, sc_fmt, 0}; 345187692Snwhitehorn 346187692Snwhitehornstatic struct pcmchan_caps * 347187692Snwhitehornaoa_chan_getcaps(kobj_t obj, void *data) 348187692Snwhitehorn{ 349187692Snwhitehorn return (&aoa_caps); 350187692Snwhitehorn} 351187692Snwhitehorn 352187692Snwhitehornstatic kobj_method_t aoa_chan_methods[] = { 353187692Snwhitehorn KOBJMETHOD(channel_init, aoa_chan_init), 354187692Snwhitehorn KOBJMETHOD(channel_free, aoa_chan_free), 355187692Snwhitehorn KOBJMETHOD(channel_setformat, aoa_chan_setformat), 356187692Snwhitehorn KOBJMETHOD(channel_setspeed, aoa_chan_setspeed), 357187692Snwhitehorn KOBJMETHOD(channel_setblocksize,aoa_chan_setblocksize), 358187692Snwhitehorn KOBJMETHOD(channel_trigger, aoa_chan_trigger), 359187692Snwhitehorn KOBJMETHOD(channel_getptr, aoa_chan_getptr), 360187692Snwhitehorn KOBJMETHOD(channel_getcaps, aoa_chan_getcaps), 361193640Sariff KOBJMETHOD_END 362187692Snwhitehorn}; 363187692SnwhitehornCHANNEL_DECLARE(aoa_chan); 364187692Snwhitehorn 365187692Snwhitehornint 366188259Snwhitehornaoa_attach(void *xsc) 367187692Snwhitehorn{ 368187692Snwhitehorn char status[SND_STATUSLEN]; 369188259Snwhitehorn struct aoa_softc *sc; 370188259Snwhitehorn device_t self; 371187692Snwhitehorn int err; 372187692Snwhitehorn 373188259Snwhitehorn sc = xsc; 374188259Snwhitehorn self = sc->sc_dev; 375188259Snwhitehorn 376187717Snwhitehorn if (pcm_register(self, sc, 1, 0)) 377187692Snwhitehorn return (ENXIO); 378187692Snwhitehorn 379187692Snwhitehorn err = pcm_getbuffersize(self, AOA_BUFFER_SIZE, AOA_BUFFER_SIZE, 380187692Snwhitehorn AOA_BUFFER_SIZE); 381187692Snwhitehorn DPRINTF(("pcm_getbuffersize returned %d\n", err)); 382187692Snwhitehorn 383188259Snwhitehorn pcm_addchan(self, PCMDIR_PLAY, &aoa_chan_class, sc); 384187692Snwhitehorn 385187692Snwhitehorn snprintf(status, sizeof(status), "at %s", ofw_bus_get_name(self)); 386187692Snwhitehorn pcm_setstatus(self, status); 387187692Snwhitehorn 388187692Snwhitehorn return (0); 389187692Snwhitehorn} 390187692Snwhitehorn 391