via82c686.c revision 254263
150974Swpaul/*- 250974Swpaul * Copyright (c) 2000 David Jones <dej@ox.org> 350974Swpaul * All rights reserved. 450974Swpaul * 550974Swpaul * Redistribution and use in source and binary forms, with or without 650974Swpaul * modification, are permitted provided that the following conditions 750974Swpaul * are met: 850974Swpaul * 1. Redistributions of source code must retain the above copyright 950974Swpaul * notice, this list of conditions and the following disclaimer. 1050974Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1150974Swpaul * notice, this list of conditions and the following disclaimer in the 1250974Swpaul * documentation and/or other materials provided with the distribution. 1350974Swpaul * 1450974Swpaul * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1550974Swpaul * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1650974Swpaul * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1750974Swpaul * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1850974Swpaul * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1950974Swpaul * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2050974Swpaul * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2150974Swpaul * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2250974Swpaul * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2350974Swpaul * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2450974Swpaul * SUCH DAMAGE. 2550974Swpaul */ 2650974Swpaul 2750974Swpaul#ifdef HAVE_KERNEL_OPTION_HEADERS 2850974Swpaul#include "opt_snd.h" 2950974Swpaul#endif 3050974Swpaul 3150974Swpaul#include <dev/sound/pcm/sound.h> 3250974Swpaul#include <dev/sound/pcm/ac97.h> 3350974Swpaul 3450974Swpaul#include <dev/pci/pcireg.h> 3550974Swpaul#include <dev/pci/pcivar.h> 3650974Swpaul#include <sys/sysctl.h> 3750974Swpaul 3850974Swpaul#include <dev/sound/pci/via82c686.h> 3964963Swpaul 4064963SwpaulSND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/pci/via82c686.c 254263 2013-08-12 23:30:01Z scottl $"); 4164963Swpaul 4250974Swpaul#define VIA_PCI_ID 0x30581106 4350974Swpaul#define NSEGS 4 /* Number of segments in SGD table */ 4450974Swpaul 4550974Swpaul#define SEGS_PER_CHAN (NSEGS/2) 4650974Swpaul 4750974Swpaul#define TIMEOUT 50 4850974Swpaul#define VIA_DEFAULT_BUFSZ 0x1000 4950974Swpaul 5050974Swpaul#undef DEB 5150974Swpaul#define DEB(x) 5250974Swpaul 5350974Swpaul/* we rely on this struct being packed to 64 bits */ 5450974Swpaulstruct via_dma_op { 5550974Swpaul u_int32_t ptr; 5650974Swpaul u_int32_t flags; 5750974Swpaul#define VIA_DMAOP_EOL 0x80000000 5850974Swpaul#define VIA_DMAOP_FLAG 0x40000000 5950974Swpaul#define VIA_DMAOP_STOP 0x20000000 6050974Swpaul#define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF) 6150974Swpaul}; 6250974Swpaul 6350974Swpaulstruct via_info; 6450974Swpaul 6550974Swpaulstruct via_chinfo { 6650974Swpaul struct via_info *parent; 6787059Sluigi struct pcm_channel *channel; 6850974Swpaul struct snd_dbuf *buffer; 6950974Swpaul struct via_dma_op *sgd_table; 7050974Swpaul bus_addr_t sgd_addr; 7150974Swpaul int dir, blksz; 7250974Swpaul int base, count, mode, ctrl; 7350974Swpaul}; 7487390Sjhay 7587390Sjhaystruct via_info { 7650974Swpaul bus_space_tag_t st; 7750974Swpaul bus_space_handle_t sh; 7850974Swpaul bus_dma_tag_t parent_dmat; 7950974Swpaul bus_dma_tag_t sgd_dmat; 8050974Swpaul bus_dmamap_t sgd_dmamap; 8150974Swpaul bus_addr_t sgd_addr; 8250974Swpaul 8350974Swpaul struct resource *reg, *irq; 8450974Swpaul int regid, irqid; 8550974Swpaul void *ih; 8650974Swpaul struct ac97_info *codec; 8750974Swpaul 8850974Swpaul unsigned int bufsz; 8950974Swpaul 9050974Swpaul struct via_chinfo pch, rch; 9150974Swpaul struct via_dma_op *sgd_table; 9250974Swpaul u_int16_t codec_caps; 9350974Swpaul struct mtx *lock; 9450974Swpaul}; 9550974Swpaul 9659758Speterstatic u_int32_t via_fmt[] = { 9759758Speter SND_FORMAT(AFMT_U8, 1, 0), 9851089Speter SND_FORMAT(AFMT_U8, 2, 0), 9950974Swpaul SND_FORMAT(AFMT_S16_LE, 1, 0), 10050974Swpaul SND_FORMAT(AFMT_S16_LE, 2, 0), 10150974Swpaul 0 10250974Swpaul}; 10350974Swpaulstatic struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0}; 10450974Swpaulstatic struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0}; 10550974Swpaul 10650974Swpaulstatic __inline u_int32_t 10750974Swpaulvia_rd(struct via_info *via, int regno, int size) 10850974Swpaul{ 10950974Swpaul 11050974Swpaul switch (size) { 11150974Swpaul case 1: 11262672Swpaul return bus_space_read_1(via->st, via->sh, regno); 11350974Swpaul case 2: 11450974Swpaul return bus_space_read_2(via->st, via->sh, regno); 11550974Swpaul case 4: 11692739Salfred return bus_space_read_4(via->st, via->sh, regno); 11792739Salfred default: 11892739Salfred return 0xFFFFFFFF; 11950974Swpaul } 12092739Salfred} 12192739Salfred 12292739Salfred 12392739Salfredstatic __inline void 12492739Salfredvia_wr(struct via_info *via, int regno, u_int32_t data, int size) 12592739Salfred{ 12692739Salfred 12792739Salfred switch (size) { 12892739Salfred case 1: 12992739Salfred bus_space_write_1(via->st, via->sh, regno, data); 13092739Salfred break; 13192739Salfred case 2: 13292739Salfred bus_space_write_2(via->st, via->sh, regno, data); 13392739Salfred break; 13492739Salfred case 4: 13592739Salfred bus_space_write_4(via->st, via->sh, regno, data); 13692739Salfred break; 13750974Swpaul } 13892739Salfred} 13992739Salfred 14092739Salfred/* -------------------------------------------------------------------- */ 14192739Salfred/* Codec interface */ 14292739Salfred 14392739Salfredstatic int 14472197Swpaulvia_waitready_codec(struct via_info *via) 14592739Salfred{ 14692739Salfred int i; 14792739Salfred 14892739Salfred /* poll until codec not busy */ 14972197Swpaul for (i = 0; (i < TIMEOUT) && 15072197Swpaul (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 15192739Salfred DELAY(1); 15292739Salfred if (i >= TIMEOUT) { 15392739Salfred printf("via: codec busy\n"); 15450974Swpaul return 1; 15592739Salfred } 15692739Salfred 15792739Salfred return 0; 15892739Salfred} 15992739Salfred 16092739Salfred 16150974Swpaulstatic int 16292739Salfredvia_waitvalid_codec(struct via_info *via) 16392739Salfred{ 16492739Salfred int i; 16550974Swpaul 16650974Swpaul /* poll until codec valid */ 16750974Swpaul for (i = 0; (i < TIMEOUT) && 16850974Swpaul !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 16951030Swpaul DELAY(1); 17051030Swpaul if (i >= TIMEOUT) { 17150974Swpaul printf("via: codec invalid\n"); 17250974Swpaul return 1; 17350974Swpaul } 17450974Swpaul 17550974Swpaul return 0; 17650974Swpaul} 17750974Swpaul 17850974Swpaul 17950974Swpaulstatic int 18050974Swpaulvia_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 18150974Swpaul{ 18250974Swpaul struct via_info *via = addr; 18350974Swpaul 18450974Swpaul if (via_waitready_codec(via)) return -1; 18550974Swpaul 18650974Swpaul via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 18750974Swpaul 18850974Swpaul return 0; 18950974Swpaul} 19050974Swpaul 19150974Swpaul 19250974Swpaulstatic int 19351455Swpaulvia_read_codec(kobj_t obj, void *addr, int reg) 19450974Swpaul{ 19550974Swpaul struct via_info *via = addr; 19650974Swpaul 19750974Swpaul if (via_waitready_codec(via)) 19850974Swpaul return -1; 19950974Swpaul 20051533Swpaul via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 20151473Swpaul 20250974Swpaul if (via_waitready_codec(via)) 20350974Swpaul return -1; 20450974Swpaul 20550974Swpaul if (via_waitvalid_codec(via)) 20650974Swpaul return -1; 20750974Swpaul 20850974Swpaul return via_rd(via, VIA_CODEC_CTL, 2); 20950974Swpaul} 21050974Swpaul 21150974Swpaulstatic kobj_method_t via_ac97_methods[] = { 21250974Swpaul KOBJMETHOD(ac97_read, via_read_codec), 21350974Swpaul KOBJMETHOD(ac97_write, via_write_codec), 21450974Swpaul KOBJMETHOD_END 21550974Swpaul}; 21650974SwpaulAC97_DECLARE(via_ac97); 21781713Swpaul 21881713Swpaul/* -------------------------------------------------------------------- */ 21981713Swpaul 22081713Swpaulstatic int 22181713Swpaulvia_buildsgdt(struct via_chinfo *ch) 22281713Swpaul{ 22381713Swpaul u_int32_t phys_addr, flag; 22481713Swpaul int i, segs, seg_size; 22581713Swpaul 22681713Swpaul /* 22781713Swpaul * Build the scatter/gather DMA (SGD) table. 22881713Swpaul * There are four slots in the table: two for play, two for record. 22981713Swpaul * This creates two half-buffers, one of which is playing; the other 23081713Swpaul * is feeding. 23181713Swpaul */ 23281713Swpaul seg_size = ch->blksz; 23381713Swpaul segs = sndbuf_getsize(ch->buffer) / seg_size; 23481713Swpaul phys_addr = sndbuf_getbufaddr(ch->buffer); 23581713Swpaul 23681713Swpaul for (i = 0; i < segs; i++) { 23781713Swpaul flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 23881713Swpaul ch->sgd_table[i].ptr = phys_addr + (i * seg_size); 23981713Swpaul ch->sgd_table[i].flags = flag | seg_size; 24081713Swpaul } 24181713Swpaul 24281713Swpaul return 0; 24381713Swpaul} 24481713Swpaul 24581713Swpaul/* channel interface */ 24681713Swpaulstatic void * 24781713Swpaulviachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 24881713Swpaul{ 24981713Swpaul struct via_info *via = devinfo; 25081713Swpaul struct via_chinfo *ch; 25181713Swpaul 25281713Swpaul snd_mtxlock(via->lock); 25381713Swpaul if (dir == PCMDIR_PLAY) { 25481713Swpaul ch = &via->pch; 25581713Swpaul ch->base = VIA_PLAY_DMAOPS_BASE; 25681713Swpaul ch->count = VIA_PLAY_DMAOPS_COUNT; 25781713Swpaul ch->ctrl = VIA_PLAY_CONTROL; 25881713Swpaul ch->mode = VIA_PLAY_MODE; 25962672Swpaul ch->sgd_addr = via->sgd_addr; 26062672Swpaul ch->sgd_table = &via->sgd_table[0]; 26162672Swpaul } else { 26262672Swpaul ch = &via->rch; 26362672Swpaul ch->base = VIA_RECORD_DMAOPS_BASE; 26462672Swpaul ch->count = VIA_RECORD_DMAOPS_COUNT; 26562672Swpaul ch->ctrl = VIA_RECORD_CONTROL; 26662672Swpaul ch->mode = VIA_RECORD_MODE; 26762672Swpaul ch->sgd_addr = via->sgd_addr + sizeof(struct via_dma_op) * SEGS_PER_CHAN; 26862672Swpaul ch->sgd_table = &via->sgd_table[SEGS_PER_CHAN]; 26962672Swpaul } 27062672Swpaul 27162672Swpaul ch->parent = via; 27262672Swpaul ch->channel = c; 27362672Swpaul ch->buffer = b; 27450974Swpaul ch->dir = dir; 27550974Swpaul snd_mtxunlock(via->lock); 27650974Swpaul 27750974Swpaul if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0) 27850974Swpaul return NULL; 27950974Swpaul 28050974Swpaul return ch; 28150974Swpaul} 28250974Swpaul 28350974Swpaulstatic int 28450974Swpaulviachan_setformat(kobj_t obj, void *data, u_int32_t format) 28550974Swpaul{ 28650974Swpaul struct via_chinfo *ch = data; 28750974Swpaul struct via_info *via = ch->parent; 28850974Swpaul int mode, mode_set; 28950974Swpaul 29050974Swpaul mode_set = 0; 29150974Swpaul if (AFMT_CHANNEL(format) > 1) 29250974Swpaul mode_set |= VIA_RPMODE_STEREO; 29350974Swpaul if (format & AFMT_S16_LE) 29450974Swpaul mode_set |= VIA_RPMODE_16BIT; 29550974Swpaul 29650974Swpaul DEB(printf("set format: dir = %d, format=%x\n", ch->dir, format)); 29750974Swpaul snd_mtxlock(via->lock); 29850974Swpaul mode = via_rd(via, ch->mode, 1); 29950974Swpaul mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 30050974Swpaul mode |= mode_set; 30150974Swpaul via_wr(via, ch->mode, mode, 1); 30250974Swpaul snd_mtxunlock(via->lock); 30350974Swpaul 30450974Swpaul return 0; 30550974Swpaul} 30650974Swpaul 30750974Swpaulstatic u_int32_t 30850974Swpaulviachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 30950974Swpaul{ 31050974Swpaul struct via_chinfo *ch = data; 31150974Swpaul struct via_info *via = ch->parent; 31250974Swpaul int reg; 31350974Swpaul 31450974Swpaul /* 31550974Swpaul * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 31650974Swpaul * upsampling is required. 31750974Swpaul * 31850974Swpaul * The VT82C686A does not perform upsampling, and neither do we. 31950974Swpaul * If the codec supports variable-rate audio (i.e. does the upsampling 32050974Swpaul * itself), then negotiate the rate with the codec. Otherwise, 32150974Swpaul * return 48 kHz cuz that's all you got. 32250974Swpaul */ 32350974Swpaul if (via->codec_caps & AC97_EXTCAP_VRA) { 32450974Swpaul reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE; 32550974Swpaul return ac97_setrate(via->codec, reg, speed); 32650974Swpaul } else 32750974Swpaul return 48000; 32850974Swpaul} 32950974Swpaul 33050974Swpaulstatic u_int32_t 33150974Swpaulviachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 33250974Swpaul{ 33350974Swpaul struct via_chinfo *ch = data; 33450974Swpaul 33550974Swpaul ch->blksz = blocksize; 33650974Swpaul sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz); 33750974Swpaul 33850974Swpaul return ch->blksz; 33950974Swpaul} 34050974Swpaul 34150974Swpaulstatic int 34250974Swpaulviachan_trigger(kobj_t obj, void *data, int go) 34350974Swpaul{ 34450974Swpaul struct via_chinfo *ch = data; 34550974Swpaul struct via_info *via = ch->parent; 34650974Swpaul struct via_dma_op *ado; 34750974Swpaul bus_addr_t sgd_addr = ch->sgd_addr; 34850974Swpaul 34950974Swpaul if (!PCMTRIG_COMMON(go)) 35050974Swpaul return 0; 35150974Swpaul 35250974Swpaul ado = ch->sgd_table; 35350974Swpaul DEB(printf("ado located at va=%p pa=%x\n", ado, sgd_addr)); 35450974Swpaul 35550974Swpaul snd_mtxlock(via->lock); 35650974Swpaul if (go == PCMTRIG_START) { 35762672Swpaul via_buildsgdt(ch); 35862672Swpaul via_wr(via, ch->base, sgd_addr, 4); 35950974Swpaul via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1); 36050974Swpaul } else 36150974Swpaul via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1); 36250974Swpaul snd_mtxunlock(via->lock); 36350974Swpaul 36450974Swpaul DEB(printf("viachan_trigger: go=%d\n", go)); 36550974Swpaul return 0; 36650974Swpaul} 36750974Swpaul 36850974Swpaulstatic u_int32_t 36950974Swpaulviachan_getptr(kobj_t obj, void *data) 37050974Swpaul{ 37150974Swpaul struct via_chinfo *ch = data; 37250974Swpaul struct via_info *via = ch->parent; 37350974Swpaul struct via_dma_op *ado; 37450974Swpaul bus_addr_t sgd_addr = ch->sgd_addr; 37550974Swpaul u_int32_t ptr, base, base1, len, seg; 37650974Swpaul 37750974Swpaul ado = ch->sgd_table; 37850974Swpaul snd_mtxlock(via->lock); 37950974Swpaul base1 = via_rd(via, ch->base, 4); 38050974Swpaul len = via_rd(via, ch->count, 4); 38150974Swpaul base = via_rd(via, ch->base, 4); 38250974Swpaul if (base != base1) /* Avoid race hazard */ 38350974Swpaul len = via_rd(via, ch->count, 4); 38450974Swpaul snd_mtxunlock(via->lock); 38550974Swpaul 38650974Swpaul DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base)); 38750974Swpaul 38850974Swpaul /* Base points to SGD segment to do, one past current */ 38950974Swpaul 39050974Swpaul /* Determine how many segments have been done */ 39150974Swpaul seg = (base - sgd_addr) / sizeof(struct via_dma_op); 39250974Swpaul if (seg == 0) 39350974Swpaul seg = SEGS_PER_CHAN; 39450974Swpaul 39550974Swpaul /* Now work out offset: seg less count */ 39650974Swpaul ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len; 39750974Swpaul if (ch->dir == PCMDIR_REC) { 39850974Swpaul /* DMA appears to operate on memory 'lines' of 32 bytes */ 39950974Swpaul /* so don't return any part line - it isn't in RAM yet */ 40050974Swpaul ptr = ptr & ~0x1f; 40150974Swpaul } 40250974Swpaul 40350974Swpaul DEB(printf("return ptr=%u\n", ptr)); 40450974Swpaul return ptr; 40550974Swpaul} 40650974Swpaul 40750974Swpaulstatic struct pcmchan_caps * 40850974Swpaulviachan_getcaps(kobj_t obj, void *data) 40950974Swpaul{ 41050974Swpaul struct via_chinfo *ch = data; 41150974Swpaul struct via_info *via = ch->parent; 41250974Swpaul 41372197Swpaul return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps; 41472197Swpaul} 41572197Swpaul 41672197Swpaulstatic kobj_method_t viachan_methods[] = { 41772197Swpaul KOBJMETHOD(channel_init, viachan_init), 41872197Swpaul KOBJMETHOD(channel_setformat, viachan_setformat), 41972197Swpaul KOBJMETHOD(channel_setspeed, viachan_setspeed), 42072197Swpaul KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 42172197Swpaul KOBJMETHOD(channel_trigger, viachan_trigger), 42272197Swpaul KOBJMETHOD(channel_getptr, viachan_getptr), 42387994Sarchie KOBJMETHOD(channel_getcaps, viachan_getcaps), 42472197Swpaul KOBJMETHOD_END 42572197Swpaul}; 42672197SwpaulCHANNEL_DECLARE(viachan); 42772197Swpaul 42872197Swpaul/* -------------------------------------------------------------------- */ 42972197Swpaul 43072197Swpaulstatic void 43172197Swpaulvia_intr(void *p) 43272197Swpaul{ 43372197Swpaul struct via_info *via = p; 43472197Swpaul 43572197Swpaul /* DEB(printf("viachan_intr\n")); */ 43672197Swpaul /* Read channel */ 43772197Swpaul snd_mtxlock(via->lock); 43887994Sarchie if (via_rd(via, VIA_PLAY_STAT, 1) & VIA_RPSTAT_INTR) { 43987994Sarchie via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 44072197Swpaul snd_mtxunlock(via->lock); 44172197Swpaul chn_intr(via->pch.channel); 44272197Swpaul snd_mtxlock(via->lock); 44372197Swpaul } 44487994Sarchie 44572197Swpaul /* Write channel */ 44672197Swpaul if (via_rd(via, VIA_RECORD_STAT, 1) & VIA_RPSTAT_INTR) { 44787994Sarchie via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 44872197Swpaul snd_mtxunlock(via->lock); 44972197Swpaul chn_intr(via->rch.channel); 45072197Swpaul return; 45172197Swpaul } 45272197Swpaul snd_mtxunlock(via->lock); 45372197Swpaul} 45472197Swpaul 45572197Swpaul/* 45672197Swpaul * Probe and attach the card 45772197Swpaul */ 45872197Swpaulstatic int 45972197Swpaulvia_probe(device_t dev) 46072197Swpaul{ 46172197Swpaul if (pci_get_devid(dev) == VIA_PCI_ID) { 46272197Swpaul device_set_desc(dev, "VIA VT82C686A"); 46372197Swpaul return BUS_PROBE_DEFAULT; 46472197Swpaul } 46572197Swpaul return ENXIO; 46672197Swpaul} 46772197Swpaul 46872197Swpaul 46972197Swpaulstatic void 47072197Swpauldma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 47172197Swpaul{ 47272197Swpaul struct via_info *via = (struct via_info *)p; 47372197Swpaul via->sgd_addr = bds->ds_addr; 47472197Swpaul} 47572197Swpaul 47672197Swpaul 47772197Swpaulstatic int 47872197Swpaulvia_attach(device_t dev) 47989296Swpaul{ 48089296Swpaul struct via_info *via = 0; 48189296Swpaul char status[SND_STATUSLEN]; 48289296Swpaul u_int32_t data, cnt; 48389296Swpaul 48489296Swpaul via = malloc(sizeof(*via), M_DEVBUF, M_WAITOK | M_ZERO); 48589296Swpaul via->lock = snd_mtxcreate(device_get_nameunit(dev), 48689296Swpaul "snd_via82c686 softc"); 48789296Swpaul 48889296Swpaul pci_enable_busmaster(dev); 48989296Swpaul 49089296Swpaul /* Wake up and reset AC97 if necessary */ 49189296Swpaul data = pci_read_config(dev, VIA_AC97STATUS, 1); 49289296Swpaul 49389296Swpaul if ((data & VIA_AC97STATUS_RDY) == 0) { 49489296Swpaul /* Cold reset per ac97r2.3 spec (page 95) */ 49589296Swpaul pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 49689296Swpaul DELAY(100); /* Wait T_rst_low */ 49789296Swpaul pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_NRST, 1); /* Assert high */ 49889296Swpaul DELAY(5); /* Wait T_rst2clk */ 49989296Swpaul pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 50089296Swpaul } else { 50189296Swpaul /* Warm reset */ 50289296Swpaul pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 50389296Swpaul DELAY(100); 50489296Swpaul pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_SYNC, 1); /* Sync */ 50589296Swpaul DELAY(5); /* Wait T_sync_high */ 50672197Swpaul pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 50772197Swpaul DELAY(5); /* Wait T_sync2clk */ 50850974Swpaul } 50950974Swpaul 51050974Swpaul /* Power everything up */ 51150974Swpaul pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_DESIRED, 1); 51250974Swpaul 51362672Swpaul /* Wait for codec to become ready (largest reported delay here 310ms) */ 51450974Swpaul for (cnt = 0; cnt < 2000; cnt++) { 51550974Swpaul data = pci_read_config(dev, VIA_AC97STATUS, 1); 51650974Swpaul if (data & VIA_AC97STATUS_RDY) 51762672Swpaul break; 51862672Swpaul DELAY(5000); 51962672Swpaul } 52062672Swpaul 52162672Swpaul via->regid = PCIR_BAR(0); 52262672Swpaul via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 52362672Swpaul &via->regid, RF_ACTIVE); 52462672Swpaul if (!via->reg) { 52562672Swpaul device_printf(dev, "cannot allocate bus resource."); 52662672Swpaul goto bad; 52762672Swpaul } 52862672Swpaul via->st = rman_get_bustag(via->reg); 52962672Swpaul via->sh = rman_get_bushandle(via->reg); 53062672Swpaul 53162672Swpaul via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536); 53262672Swpaul 53362672Swpaul via->irqid = 0; 53462672Swpaul via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid, 53562672Swpaul RF_ACTIVE | RF_SHAREABLE); 53689296Swpaul if (!via->irq || snd_setup_intr(dev, via->irq, INTR_MPSAFE, via_intr, via, &via->ih)) { 53789296Swpaul device_printf(dev, "unable to map interrupt\n"); 53850974Swpaul goto bad; 53950974Swpaul } 54050974Swpaul 54150974Swpaul via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 54250974Swpaul via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 54350974Swpaul 54450974Swpaul via->codec = AC97_CREATE(dev, via, via_ac97); 54550974Swpaul if (!via->codec) 54650974Swpaul goto bad; 54750974Swpaul 54850974Swpaul if (mixer_init(dev, ac97_getmixerclass(), via->codec)) 54950974Swpaul goto bad; 55050974Swpaul 55150974Swpaul via->codec_caps = ac97_getextcaps(via->codec); 55250974Swpaul ac97_setextmode(via->codec, 55350974Swpaul via->codec_caps & (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM)); 55450974Swpaul 55550974Swpaul /* DMA tag for buffers */ 55650974Swpaul if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2, 55750974Swpaul /*boundary*/0, 55850974Swpaul /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 55950974Swpaul /*highaddr*/BUS_SPACE_MAXADDR, 56050974Swpaul /*filter*/NULL, /*filterarg*/NULL, 56150974Swpaul /*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff, 56250974Swpaul /*flags*/0, /*lockfunc*/NULL, 56350974Swpaul /*lockarg*/NULL, &via->parent_dmat) != 0) { 56450974Swpaul device_printf(dev, "unable to create dma tag\n"); 56550974Swpaul goto bad; 56650974Swpaul } 56750974Swpaul 56850974Swpaul /* 56950974Swpaul * DMA tag for SGD table. The 686 uses scatter/gather DMA and 57062672Swpaul * requires a list in memory of work to do. We need only 16 bytes 57162672Swpaul * for this list, and it is wasteful to allocate 16K. 57262672Swpaul */ 57362672Swpaul if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2, 57462672Swpaul /*boundary*/0, 57562672Swpaul /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 57662672Swpaul /*highaddr*/BUS_SPACE_MAXADDR, 57750974Swpaul /*filter*/NULL, /*filterarg*/NULL, 57850974Swpaul /*maxsize*/NSEGS * sizeof(struct via_dma_op), 57950974Swpaul /*nsegments*/1, /*maxsegz*/0x3ffff, 58050974Swpaul /*flags*/0, /*lockfunc*/NULL, 58150974Swpaul /*lockarg*/NULL, &via->sgd_dmat) != 0) { 58250974Swpaul device_printf(dev, "unable to create dma tag\n"); 58350974Swpaul goto bad; 58450974Swpaul } 58550974Swpaul 58650974Swpaul if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table, 58750974Swpaul BUS_DMA_NOWAIT, &via->sgd_dmamap) != 0) 58850974Swpaul goto bad; 58950974Swpaul if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table, 59050974Swpaul NSEGS * sizeof(struct via_dma_op), dma_cb, via, 0) != 0) 59150974Swpaul goto bad; 59250974Swpaul 59350974Swpaul snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld %s", 59450974Swpaul rman_get_start(via->reg), rman_get_start(via->irq), 59550974Swpaul PCM_KLDSTRING(snd_via82c686)); 59650974Swpaul 59750974Swpaul /* Register */ 59850974Swpaul if (pcm_register(dev, via, 1, 1)) goto bad; 59950974Swpaul pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via); 60050974Swpaul pcm_addchan(dev, PCMDIR_REC, &viachan_class, via); 60164963Swpaul pcm_setstatus(dev, status); 60250974Swpaul return 0; 60350974Swpaulbad: 60450974Swpaul if (via->codec) ac97_destroy(via->codec); 60550974Swpaul if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 60662672Swpaul if (via->ih) bus_teardown_intr(dev, via->irq, via->ih); 60762672Swpaul if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 60850974Swpaul if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat); 60950974Swpaul if (via->sgd_dmamap) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 61050974Swpaul if (via->sgd_table) bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 61150974Swpaul if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat); 61250974Swpaul if (via->lock) snd_mtxfree(via->lock); 61350974Swpaul if (via) free(via, M_DEVBUF); 61450974Swpaul return ENXIO; 61550974Swpaul} 61650974Swpaul 61750974Swpaulstatic int 61850974Swpaulvia_detach(device_t dev) 61950974Swpaul{ 62050974Swpaul int r; 62150974Swpaul struct via_info *via = 0; 62250974Swpaul 62350974Swpaul r = pcm_unregister(dev); 62450974Swpaul if (r) 62550974Swpaul return r; 62650974Swpaul 62750974Swpaul via = pcm_getdevinfo(dev); 62862672Swpaul bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 62962672Swpaul bus_teardown_intr(dev, via->irq, via->ih); 63062672Swpaul bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 63162672Swpaul bus_dma_tag_destroy(via->parent_dmat); 63262672Swpaul bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 63362672Swpaul bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 63462672Swpaul bus_dma_tag_destroy(via->sgd_dmat); 63562672Swpaul snd_mtxfree(via->lock); 63662672Swpaul free(via, M_DEVBUF); 63750974Swpaul return 0; 63850974Swpaul} 63950974Swpaul 64062672Swpaul 64150974Swpaulstatic device_method_t via_methods[] = { 64250974Swpaul DEVMETHOD(device_probe, via_probe), 64350974Swpaul DEVMETHOD(device_attach, via_attach), 64450974Swpaul DEVMETHOD(device_detach, via_detach), 64550974Swpaul { 0, 0} 64662672Swpaul}; 64750974Swpaul 64850974Swpaulstatic driver_t via_driver = { 64950974Swpaul "pcm", 65050974Swpaul via_methods, 65162672Swpaul PCM_SOFTC_SIZE, 65250974Swpaul}; 65350974Swpaul 65450974SwpaulDRIVER_MODULE(snd_via82c686, pci, via_driver, pcm_devclass, 0, 0); 65550974SwpaulMODULE_DEPEND(snd_via82c686, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); 65662672SwpaulMODULE_VERSION(snd_via82c686, 1); 65762672Swpaul