via82c686.c revision 82180
164439Scg/* 264439Scg * Copyright (c) 2000 David Jones <dej@ox.org> 364439Scg * All rights reserved. 464439Scg * 564439Scg * Redistribution and use in source and binary forms, with or without 664439Scg * modification, are permitted provided that the following conditions 764439Scg * are met: 864439Scg * 1. Redistributions of source code must retain the above copyright 964439Scg * notice, this list of conditions and the following disclaimer. 1064439Scg * 2. Redistributions in binary form must reproduce the above copyright 1164439Scg * notice, this list of conditions and the following disclaimer in the 1264439Scg * documentation and/or other materials provided with the distribution. 1364439Scg * 1464439Scg * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1564439Scg * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1664439Scg * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1764439Scg * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1864439Scg * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1964439Scg * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2064439Scg * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2164439Scg * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2264439Scg * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2364439Scg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2464439Scg * SUCH DAMAGE. 2564439Scg */ 2664439Scg 2764439Scg#include <dev/sound/pcm/sound.h> 2864439Scg#include <dev/sound/pcm/ac97.h> 2964439Scg 3064439Scg#include <pci/pcireg.h> 3164439Scg#include <pci/pcivar.h> 3264439Scg#include <sys/sysctl.h> 3364439Scg 3464439Scg#include <dev/sound/pci/via82c686.h> 3564439Scg 3682180ScgSND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/pci/via82c686.c 82180 2001-08-23 11:30:52Z cg $"); 3782180Scg 3864439Scg#define VIA_PCI_ID 0x30581106 3974763Scg#define NSEGS 4 /* Number of segments in SGD table */ 4064439Scg 4164439Scg#define SEGS_PER_CHAN (NSEGS/2) 4264439Scg 4370346Scg#define TIMEOUT 50 4474763Scg#define VIA_BUFFSIZE 0x1000 4570346Scg 4664439Scg#undef DEB 4764439Scg#define DEB(x) 4864439Scg 4970346Scg/* we rely on this struct being packed to 64 bits */ 5070346Scgstruct via_dma_op { 5170346Scg u_int32_t ptr; 5270346Scg u_int32_t flags; 5370346Scg#define VIA_DMAOP_EOL 0x80000000 5470346Scg#define VIA_DMAOP_FLAG 0x40000000 5570346Scg#define VIA_DMAOP_STOP 0x20000000 5670346Scg#define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF) 5770346Scg}; 5870346Scg 5964439Scgstruct via_info; 6064439Scg 6164439Scgstruct via_chinfo { 6264439Scg struct via_info *parent; 6374763Scg struct pcm_channel *channel; 6474763Scg struct snd_dbuf *buffer; 6574763Scg struct via_dma_op *sgd_table; 6674763Scg int dir, blksz; 6774763Scg int base, count, mode, ctrl; 6864439Scg}; 6964439Scg 7064439Scgstruct via_info { 7164439Scg bus_space_tag_t st; 7264439Scg bus_space_handle_t sh; 7374797Scg bus_dma_tag_t parent_dmat; 7474797Scg bus_dma_tag_t sgd_dmat; 7574763Scg bus_dmamap_t sgd_dmamap; 7664439Scg 7765644Scg struct resource *reg, *irq; 7865644Scg int regid, irqid; 7965644Scg void *ih; 8074763Scg struct ac97_info *codec; 8165644Scg 8264439Scg struct via_chinfo pch, rch; 8364439Scg struct via_dma_op *sgd_table; 8474797Scg u_int16_t codec_caps; 8564439Scg}; 8664439Scg 8774763Scgstatic u_int32_t via_fmt[] = { 8864881Scg AFMT_U8, 8964881Scg AFMT_STEREO | AFMT_U8, 9064881Scg AFMT_S16_LE, 9164881Scg AFMT_STEREO | AFMT_S16_LE, 9264881Scg 0 9364439Scg}; 9474763Scgstatic struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0}; 9574763Scgstatic struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0}; 9664439Scg 9764439Scgstatic u_int32_t 9864439Scgvia_rd(struct via_info *via, int regno, int size) 9964439Scg{ 10064439Scg 10164439Scg switch (size) { 10264439Scg case 1: 10364439Scg return bus_space_read_1(via->st, via->sh, regno); 10464439Scg case 2: 10564439Scg return bus_space_read_2(via->st, via->sh, regno); 10664439Scg case 4: 10764439Scg return bus_space_read_4(via->st, via->sh, regno); 10864439Scg default: 10964439Scg return 0xFFFFFFFF; 11064439Scg } 11164439Scg} 11264439Scg 11364439Scg 11464439Scgstatic void 11564439Scgvia_wr(struct via_info *via, int regno, u_int32_t data, int size) 11664439Scg{ 11764439Scg 11864439Scg switch (size) { 11964439Scg case 1: 12064439Scg bus_space_write_1(via->st, via->sh, regno, data); 12164439Scg break; 12264439Scg case 2: 12364439Scg bus_space_write_2(via->st, via->sh, regno, data); 12464439Scg break; 12564439Scg case 4: 12664439Scg bus_space_write_4(via->st, via->sh, regno, data); 12764439Scg break; 12864439Scg } 12964439Scg} 13064439Scg 13170134Scg/* -------------------------------------------------------------------- */ 13270134Scg/* Codec interface */ 13364439Scg 13470134Scgstatic int 13564439Scgvia_waitready_codec(struct via_info *via) 13664439Scg{ 13764439Scg int i; 13864439Scg 13964439Scg /* poll until codec not busy */ 14064439Scg for (i = 0; (i < TIMEOUT) && 14164439Scg (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 14264439Scg DELAY(1); 14364439Scg if (i >= TIMEOUT) { 14464439Scg printf("via: codec busy\n"); 14564439Scg return 1; 14664439Scg } 14764439Scg 14864439Scg return 0; 14964439Scg} 15064439Scg 15164439Scg 15270134Scgstatic int 15364439Scgvia_waitvalid_codec(struct via_info *via) 15464439Scg{ 15564439Scg int i; 15664439Scg 15764439Scg /* poll until codec valid */ 15864439Scg for (i = 0; (i < TIMEOUT) && 15964439Scg !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 16064439Scg DELAY(1); 16164439Scg if (i >= TIMEOUT) { 16264439Scg printf("via: codec invalid\n"); 16364439Scg return 1; 16464439Scg } 16564439Scg 16664439Scg return 0; 16764439Scg} 16864439Scg 16964439Scg 17070134Scgstatic int 17170134Scgvia_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 17264439Scg{ 17364439Scg struct via_info *via = addr; 17464439Scg 17570134Scg if (via_waitready_codec(via)) return -1; 17664439Scg 17774763Scg via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 17870134Scg 17970134Scg return 0; 18064439Scg} 18164439Scg 18264439Scg 18370134Scgstatic int 18470134Scgvia_read_codec(kobj_t obj, void *addr, int reg) 18564439Scg{ 18664439Scg struct via_info *via = addr; 18764439Scg 18864439Scg if (via_waitready_codec(via)) 18974763Scg return -1; 19064439Scg 19174763Scg via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 19264439Scg 19364439Scg if (via_waitready_codec(via)) 19474763Scg return -1; 19564439Scg 19664439Scg if (via_waitvalid_codec(via)) 19774763Scg return -1; 19864439Scg 19964439Scg return via_rd(via, VIA_CODEC_CTL, 2); 20064439Scg} 20164439Scg 20270134Scgstatic kobj_method_t via_ac97_methods[] = { 20370134Scg KOBJMETHOD(ac97_read, via_read_codec), 20470134Scg KOBJMETHOD(ac97_write, via_write_codec), 20570134Scg { 0, 0 } 20670134Scg}; 20770134ScgAC97_DECLARE(via_ac97); 20864439Scg 20970134Scg/* -------------------------------------------------------------------- */ 21070134Scg 21164439Scgstatic int 21274763Scgvia_buildsgdt(struct via_chinfo *ch) 21364439Scg{ 21474763Scg u_int32_t phys_addr, flag; 21574763Scg int i, segs, seg_size; 21664439Scg 21764439Scg /* 21864439Scg * Build the scatter/gather DMA (SGD) table. 21964439Scg * There are four slots in the table: two for play, two for record. 22064439Scg * This creates two half-buffers, one of which is playing; the other 22164439Scg * is feeding. 22264439Scg */ 22374763Scg seg_size = ch->blksz; 22474763Scg segs = sndbuf_getsize(ch->buffer) / seg_size; 22574763Scg phys_addr = vtophys(sndbuf_getbuf(ch->buffer)); 22664439Scg 22774763Scg for (i = 0; i < segs; i++) { 22874763Scg flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 22974763Scg ch->sgd_table[i].ptr = phys_addr + (i * seg_size); 23074763Scg ch->sgd_table[i].flags = flag | seg_size; 23164439Scg } 23264439Scg 23364439Scg return 0; 23464439Scg} 23564439Scg 23674763Scg/* channel interface */ 23774763Scgstatic void * 23874763Scgviachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 23974763Scg{ 24074763Scg struct via_info *via = devinfo; 24174763Scg struct via_chinfo *ch = (dir == PCMDIR_PLAY)? &via->pch : &via->rch; 24274763Scg 24374763Scg ch->parent = via; 24474763Scg ch->channel = c; 24574763Scg ch->buffer = b; 24674763Scg ch->dir = dir; 24774763Scg ch->sgd_table = &via->sgd_table[(dir == PCMDIR_PLAY)? 0 : SEGS_PER_CHAN]; 24874763Scg if (ch->dir == PCMDIR_PLAY) { 24974763Scg ch->base = VIA_PLAY_DMAOPS_BASE; 25074763Scg ch->count = VIA_PLAY_DMAOPS_COUNT; 25181071Sgreid ch->ctrl = VIA_PLAY_CONTROL; 25274763Scg ch->mode = VIA_PLAY_MODE; 25374763Scg } else { 25474763Scg ch->base = VIA_RECORD_DMAOPS_BASE; 25574763Scg ch->count = VIA_RECORD_DMAOPS_COUNT; 25681071Sgreid ch->ctrl = VIA_RECORD_CONTROL; 25774763Scg ch->mode = VIA_RECORD_MODE; 25874763Scg } 25974763Scg 26074763Scg if (sndbuf_alloc(ch->buffer, via->parent_dmat, VIA_BUFFSIZE) == -1) 26174763Scg return NULL; 26274763Scg return ch; 26374763Scg} 26474763Scg 26564439Scgstatic int 26670134Scgviachan_setformat(kobj_t obj, void *data, u_int32_t format) 26764439Scg{ 26864439Scg struct via_chinfo *ch = data; 26964439Scg struct via_info *via = ch->parent; 27074797Scg int mode, mode_set; 27164439Scg 27264439Scg mode_set = 0; 27364439Scg if (format & AFMT_STEREO) 27464439Scg mode_set |= VIA_RPMODE_STEREO; 27564439Scg if (format & AFMT_S16_LE) 27664439Scg mode_set |= VIA_RPMODE_16BIT; 27764439Scg 27874763Scg DEB(printf("set format: dir = %d, format=%x\n", ch->dir, format)); 27974763Scg mode = via_rd(via, ch->mode, 1); 28074797Scg mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 28174797Scg mode |= mode_set; 28274763Scg via_wr(via, ch->mode, mode, 1); 28364439Scg 28464439Scg return 0; 28564439Scg} 28664439Scg 28764439Scgstatic int 28870134Scgviachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 28964439Scg{ 29064439Scg struct via_chinfo *ch = data; 29164439Scg struct via_info *via = ch->parent; 29274763Scg int reg; 29364439Scg 29464439Scg /* 29564439Scg * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 29664439Scg * upsampling is required. 29764439Scg * 29864439Scg * The VT82C686A does not perform upsampling, and neither do we. 29964439Scg * If the codec supports variable-rate audio (i.e. does the upsampling 30064439Scg * itself), then negotiate the rate with the codec. Otherwise, 30164439Scg * return 48 kHz cuz that's all you got. 30264439Scg */ 30374763Scg if (via->codec_caps & AC97_EXTCAP_VRA) { 30474763Scg reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE; 30574763Scg return ac97_setrate(via->codec, reg, speed); 30674763Scg } else 30774763Scg return 48000; 30864439Scg} 30964439Scg 31064439Scgstatic int 31170134Scgviachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 31264439Scg{ 31364439Scg struct via_chinfo *ch = data; 31464439Scg 31574763Scg ch->blksz = blocksize; 31674763Scg sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz); 31774763Scg 31874763Scg return ch->blksz; 31964439Scg} 32064439Scg 32164439Scgstatic int 32270134Scgviachan_trigger(kobj_t obj, void *data, int go) 32364439Scg{ 32464439Scg struct via_chinfo *ch = data; 32564439Scg struct via_info *via = ch->parent; 32664439Scg struct via_dma_op *ado; 32764439Scg 32874763Scg if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD) 32974763Scg return 0; 33074763Scg 33174763Scg ado = ch->sgd_table; 33274797Scg DEB(printf("ado located at va=%p pa=%x\n", ado, vtophys(ado))); 33374763Scg 33474797Scg if (go == PCMTRIG_START) { 33574763Scg via_buildsgdt(ch); 33674763Scg via_wr(via, ch->base, vtophys(ado), 4); 33774763Scg via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1); 33874763Scg } else 33974763Scg via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1); 34064439Scg 34174763Scg DEB(printf("viachan_trigger: go=%d\n", go)); 34264439Scg return 0; 34364439Scg} 34464439Scg 34564439Scgstatic int 34670134Scgviachan_getptr(kobj_t obj, void *data) 34764439Scg{ 34864439Scg struct via_chinfo *ch = data; 34964439Scg struct via_info *via = ch->parent; 35064439Scg struct via_dma_op *ado; 35174763Scg int ptr, base, base1, len, seg; 35264439Scg 35374763Scg ado = ch->sgd_table; 35474763Scg base1 = via_rd(via, ch->base, 4); 35574763Scg len = via_rd(via, ch->count, 4); 35674763Scg base = via_rd(via, ch->base, 4); 35774763Scg if (base != base1) /* Avoid race hazard */ 35874763Scg len = via_rd(via, ch->count, 4); 35964439Scg 36074797Scg DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base)); 36164439Scg 36274763Scg /* Base points to SGD segment to do, one past current */ 36364439Scg 36474797Scg /* Determine how many segments have been done */ 36574797Scg seg = (base - vtophys(ado)) / sizeof(struct via_dma_op); 36674763Scg if (seg == 0) 36774763Scg seg = SEGS_PER_CHAN; 36864439Scg 36974797Scg /* Now work out offset: seg less count */ 37074763Scg ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len; 37174763Scg if (ch->dir == PCMDIR_REC) { 37264439Scg /* DMA appears to operate on memory 'lines' of 32 bytes */ 37364439Scg /* so don't return any part line - it isn't in RAM yet */ 37464439Scg ptr = ptr & ~0x1f; 37574763Scg } 37674763Scg 37774797Scg DEB(printf("return ptr=%d\n", ptr)); 37874797Scg return ptr; 37964439Scg} 38064439Scg 38174763Scgstatic struct pcmchan_caps * 38270134Scgviachan_getcaps(kobj_t obj, void *data) 38364439Scg{ 38464439Scg struct via_chinfo *ch = data; 38574763Scg struct via_info *via = ch->parent; 38674763Scg 38774763Scg return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps; 38864439Scg} 38964439Scg 39070134Scgstatic kobj_method_t viachan_methods[] = { 39170134Scg KOBJMETHOD(channel_init, viachan_init), 39270134Scg KOBJMETHOD(channel_setformat, viachan_setformat), 39370134Scg KOBJMETHOD(channel_setspeed, viachan_setspeed), 39470134Scg KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 39570134Scg KOBJMETHOD(channel_trigger, viachan_trigger), 39670134Scg KOBJMETHOD(channel_getptr, viachan_getptr), 39770134Scg KOBJMETHOD(channel_getcaps, viachan_getcaps), 39870134Scg { 0, 0 } 39970134Scg}; 40070134ScgCHANNEL_DECLARE(viachan); 40170134Scg 40270134Scg/* -------------------------------------------------------------------- */ 40370134Scg 40464439Scgstatic void 40564439Scgvia_intr(void *p) 40664439Scg{ 40764439Scg struct via_info *via = p; 40864439Scg int st; 40964439Scg 41070345Scg /* DEB(printf("viachan_intr\n")); */ 41164439Scg /* Read channel */ 41264439Scg st = via_rd(via, VIA_PLAY_STAT, 1); 41364439Scg if (st & VIA_RPSTAT_INTR) { 41464439Scg via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 41564439Scg chn_intr(via->pch.channel); 41664439Scg } 41764439Scg 41864439Scg /* Write channel */ 41964439Scg st = via_rd(via, VIA_RECORD_STAT, 1); 42064439Scg if (st & VIA_RPSTAT_INTR) { 42164439Scg via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 42264439Scg chn_intr(via->rch.channel); 42364439Scg } 42464439Scg} 42564439Scg 42670134Scg/* 42770134Scg * Probe and attach the card 42870134Scg */ 42970134Scgstatic int 43070134Scgvia_probe(device_t dev) 43170134Scg{ 43270134Scg if (pci_get_devid(dev) == VIA_PCI_ID) { 43370345Scg device_set_desc(dev, "VIA VT82C686A"); 43470134Scg return 0; 43570134Scg } 43670134Scg return ENXIO; 43770134Scg} 43864439Scg 43970134Scg 44074763Scgstatic void 44174763Scgdma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 44270134Scg{ 44370134Scg} 44470134Scg 44570134Scg 44670134Scgstatic int 44770134Scgvia_attach(device_t dev) 44870134Scg{ 44970134Scg struct via_info *via = 0; 45074797Scg char status[SND_STATUSLEN]; 45174797Scg u_int32_t data; 45270134Scg 45378564Sgreid if ((via = malloc(sizeof *via, M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 45470134Scg device_printf(dev, "cannot allocate softc\n"); 45570134Scg return ENXIO; 45670134Scg } 45770134Scg 45870134Scg /* Get resources */ 45970134Scg data = pci_read_config(dev, PCIR_COMMAND, 2); 46070134Scg data |= (PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN); 46170134Scg pci_write_config(dev, PCIR_COMMAND, data, 2); 46270134Scg data = pci_read_config(dev, PCIR_COMMAND, 2); 46370134Scg 46470134Scg pci_write_config(dev, VIA_PCICONF_MISC, 46574763Scg VIA_PCICONF_ACLINKENAB | VIA_PCICONF_ACSGD | VIA_PCICONF_ACNOTRST | VIA_PCICONF_ACVSR, 1); 46670134Scg 46770134Scg via->regid = PCIR_MAPS; 46874763Scg via->reg = bus_alloc_resource(dev, SYS_RES_IOPORT, &via->regid, 0, ~0, 1, RF_ACTIVE); 46970134Scg if (!via->reg) { 47070345Scg device_printf(dev, "cannot allocate bus resource."); 47170134Scg goto bad; 47270134Scg } 47370134Scg via->st = rman_get_bustag(via->reg); 47470134Scg via->sh = rman_get_bushandle(via->reg); 47570134Scg 47670134Scg via->irqid = 0; 47774763Scg via->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &via->irqid, 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 47874763Scg if (!via->irq || snd_setup_intr(dev, via->irq, 0, via_intr, via, &via->ih)) { 47970134Scg device_printf(dev, "unable to map interrupt\n"); 48070134Scg goto bad; 48170134Scg } 48270134Scg 48374763Scg via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 48474763Scg via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 48570134Scg 48674763Scg via->codec = AC97_CREATE(dev, via, via_ac97); 48774763Scg if (!via->codec) 48874763Scg goto bad; 48970134Scg 49074763Scg mixer_init(dev, ac97_getmixerclass(), via->codec); 49170134Scg 49274763Scg via->codec_caps = ac97_getextcaps(via->codec); 49374763Scg if (via->codec_caps & AC97_EXTCAP_VRA) 49474763Scg ac97_setextmode(via->codec, AC97_EXTCAP_VRA | AC97_EXTCAP_VRM); 49570134Scg 49670134Scg /* DMA tag for buffers */ 49770134Scg if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 49870134Scg /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 49970134Scg /*highaddr*/BUS_SPACE_MAXADDR, 50070134Scg /*filter*/NULL, /*filterarg*/NULL, 50170134Scg /*maxsize*/VIA_BUFFSIZE, /*nsegments*/1, /*maxsegz*/0x3ffff, 50270134Scg /*flags*/0, &via->parent_dmat) != 0) { 50370134Scg device_printf(dev, "unable to create dma tag\n"); 50470134Scg goto bad; 50570134Scg } 50670134Scg 50770134Scg /* 50870134Scg * DMA tag for SGD table. The 686 uses scatter/gather DMA and 50970134Scg * requires a list in memory of work to do. We need only 16 bytes 51070134Scg * for this list, and it is wasteful to allocate 16K. 51170134Scg */ 51270134Scg if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 51370134Scg /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 51470134Scg /*highaddr*/BUS_SPACE_MAXADDR, 51570134Scg /*filter*/NULL, /*filterarg*/NULL, 51670134Scg /*maxsize*/NSEGS * sizeof(struct via_dma_op), 51770134Scg /*nsegments*/1, /*maxsegz*/0x3ffff, 51870134Scg /*flags*/0, &via->sgd_dmat) != 0) { 51970134Scg device_printf(dev, "unable to create dma tag\n"); 52070134Scg goto bad; 52170134Scg } 52270134Scg 52374763Scg if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table, BUS_DMA_NOWAIT, &via->sgd_dmamap) == -1) 52474763Scg goto bad; 52574763Scg if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table, NSEGS * sizeof(struct via_dma_op), dma_cb, 0, 0)) 52674763Scg goto bad; 52770134Scg 52874763Scg snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld", rman_get_start(via->reg), rman_get_start(via->irq)); 52970134Scg 53070134Scg /* Register */ 53170134Scg if (pcm_register(dev, via, 1, 1)) goto bad; 53270134Scg pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via); 53370134Scg pcm_addchan(dev, PCMDIR_REC, &viachan_class, via); 53470134Scg pcm_setstatus(dev, status); 53570134Scg return 0; 53670134Scgbad: 53774763Scg if (via->codec) ac97_destroy(via->codec); 53870134Scg if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 53970134Scg if (via->ih) bus_teardown_intr(dev, via->irq, via->ih); 54070134Scg if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 54170134Scg if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat); 54274763Scg if (via->sgd_dmamap) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 54370134Scg if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat); 54470134Scg if (via) free(via, M_DEVBUF); 54570134Scg return ENXIO; 54670134Scg} 54770134Scg 54870134Scgstatic int 54970134Scgvia_detach(device_t dev) 55070134Scg{ 55170134Scg int r; 55270134Scg struct via_info *via = 0; 55370134Scg 55470134Scg r = pcm_unregister(dev); 55570134Scg if (r) 55670134Scg return r; 55770134Scg 55870134Scg via = pcm_getdevinfo(dev); 55970134Scg bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 56070134Scg bus_teardown_intr(dev, via->irq, via->ih); 56170134Scg bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 56270134Scg bus_dma_tag_destroy(via->parent_dmat); 56374763Scg bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 56470134Scg bus_dma_tag_destroy(via->sgd_dmat); 56570134Scg free(via, M_DEVBUF); 56670134Scg return 0; 56770134Scg} 56870134Scg 56970134Scg 57070134Scgstatic device_method_t via_methods[] = { 57170134Scg DEVMETHOD(device_probe, via_probe), 57270134Scg DEVMETHOD(device_attach, via_attach), 57370134Scg DEVMETHOD(device_detach, via_detach), 57470134Scg { 0, 0} 57570134Scg}; 57670134Scg 57770134Scgstatic driver_t via_driver = { 57870134Scg "pcm", 57970134Scg via_methods, 58082180Scg PCM_SOFTC_SIZE, 58170134Scg}; 58270134Scg 58370134ScgDRIVER_MODULE(via, pci, via_driver, pcm_devclass, 0, 0); 58470134ScgMODULE_DEPEND(via, snd_pcm, PCM_MINVER, PCM_PREFVER, PCM_MAXVER); 58570134ScgMODULE_VERSION(via, 1); 58670134Scg 58770134Scg 588