via82c686.c revision 70346
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 * $FreeBSD: head/sys/dev/sound/pci/via82c686.c 70346 2000-12-25 02:49:28Z cg $ 2764439Scg */ 2864439Scg 2964439Scg#include <dev/sound/pcm/sound.h> 3064439Scg#include <dev/sound/pcm/ac97.h> 3164439Scg 3264439Scg#include <pci/pcireg.h> 3364439Scg#include <pci/pcivar.h> 3464439Scg#include <sys/sysctl.h> 3564439Scg 3664439Scg#include <dev/sound/pci/via82c686.h> 3764439Scg 3864439Scg#define VIA_PCI_ID 0x30581106 3964439Scg#define NSEGS 16 /* Number of segments in SGD table */ 4064439Scg 4164439Scg#define SEGS_PER_CHAN (NSEGS/2) 4264439Scg 4370346Scg#define TIMEOUT 50 4470346Scg#define VIA_BUFFSIZE 0x4000 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; 6364439Scg pcm_channel *channel; 6464439Scg snd_dbuf *buffer; 6564439Scg int dir; 6664439Scg}; 6764439Scg 6864439Scgstruct via_info { 6964439Scg bus_space_tag_t st; 7064439Scg bus_space_handle_t sh; 7164439Scg bus_dma_tag_t parent_dmat; 7264439Scg bus_dma_tag_t sgd_dmat; 7364439Scg 7465644Scg struct resource *reg, *irq; 7565644Scg int regid, irqid; 7665644Scg void *ih; 7765644Scg 7864439Scg struct via_chinfo pch, rch; 7964439Scg struct via_dma_op *sgd_table; 8064439Scg u_int16_t codec_caps; 8164439Scg}; 8264439Scg 8364439Scgstatic u_int32_t via_rd(struct via_info *via, int regno, int size); 8464439Scgstatic void via_wr(struct via_info *, int regno, u_int32_t data, int size); 8564439Scg 8664439Scgstatic void via_intr(void *); 8764439Scgbus_dmamap_callback_t dma_cb; 8864439Scg 8964881Scgstatic u_int32_t via_playfmt[] = { 9064881Scg AFMT_U8, 9164881Scg AFMT_STEREO | AFMT_U8, 9264881Scg AFMT_S16_LE, 9364881Scg AFMT_STEREO | AFMT_S16_LE, 9464881Scg 0 9564439Scg}; 9664881Scgstatic pcmchan_caps via_playcaps = {4000, 48000, via_playfmt, 0}; 9764439Scg 9864881Scgstatic u_int32_t via_recfmt[] = { 9964881Scg AFMT_U8, 10064881Scg AFMT_STEREO | AFMT_U8, 10164881Scg AFMT_S16_LE, 10264881Scg AFMT_STEREO | AFMT_S16_LE, 10364881Scg 0 10464439Scg}; 10564881Scgstatic pcmchan_caps via_reccaps = {4000, 48000, via_recfmt, 0}; 10664439Scg 10764439Scgstatic u_int32_t 10864439Scgvia_rd(struct via_info *via, int regno, int size) 10964439Scg{ 11064439Scg 11164439Scg switch (size) { 11264439Scg case 1: 11364439Scg return bus_space_read_1(via->st, via->sh, regno); 11464439Scg case 2: 11564439Scg return bus_space_read_2(via->st, via->sh, regno); 11664439Scg case 4: 11764439Scg return bus_space_read_4(via->st, via->sh, regno); 11864439Scg default: 11964439Scg return 0xFFFFFFFF; 12064439Scg } 12164439Scg} 12264439Scg 12364439Scg 12464439Scgstatic void 12564439Scgvia_wr(struct via_info *via, int regno, u_int32_t data, int size) 12664439Scg{ 12764439Scg 12864439Scg switch (size) { 12964439Scg case 1: 13064439Scg bus_space_write_1(via->st, via->sh, regno, data); 13164439Scg break; 13264439Scg case 2: 13364439Scg bus_space_write_2(via->st, via->sh, regno, data); 13464439Scg break; 13564439Scg case 4: 13664439Scg bus_space_write_4(via->st, via->sh, regno, data); 13764439Scg break; 13864439Scg } 13964439Scg} 14064439Scg 14170134Scg/* -------------------------------------------------------------------- */ 14270134Scg/* Codec interface */ 14364439Scg 14470134Scgstatic int 14564439Scgvia_waitready_codec(struct via_info *via) 14664439Scg{ 14764439Scg int i; 14864439Scg 14964439Scg /* poll until codec not busy */ 15064439Scg for (i = 0; (i < TIMEOUT) && 15164439Scg (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 15264439Scg DELAY(1); 15364439Scg if (i >= TIMEOUT) { 15464439Scg printf("via: codec busy\n"); 15564439Scg return 1; 15664439Scg } 15764439Scg 15864439Scg return 0; 15964439Scg} 16064439Scg 16164439Scg 16270134Scgstatic int 16364439Scgvia_waitvalid_codec(struct via_info *via) 16464439Scg{ 16564439Scg int i; 16664439Scg 16764439Scg /* poll until codec valid */ 16864439Scg for (i = 0; (i < TIMEOUT) && 16964439Scg !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 17064439Scg DELAY(1); 17164439Scg if (i >= TIMEOUT) { 17264439Scg printf("via: codec invalid\n"); 17364439Scg return 1; 17464439Scg } 17564439Scg 17664439Scg return 0; 17764439Scg} 17864439Scg 17964439Scg 18070134Scgstatic int 18170134Scgvia_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 18264439Scg{ 18364439Scg struct via_info *via = addr; 18464439Scg 18570134Scg if (via_waitready_codec(via)) return -1; 18664439Scg 18764439Scg via_wr(via, VIA_CODEC_CTL, 18864439Scg VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 18970134Scg 19070134Scg return 0; 19164439Scg} 19264439Scg 19364439Scg 19470134Scgstatic int 19570134Scgvia_read_codec(kobj_t obj, void *addr, int reg) 19664439Scg{ 19764439Scg struct via_info *via = addr; 19864439Scg 19964439Scg if (via_waitready_codec(via)) 20064439Scg return 1; 20164439Scg 20264439Scg via_wr(via, VIA_CODEC_CTL, 20364439Scg VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 20464439Scg 20564439Scg if (via_waitready_codec(via)) 20664439Scg return 1; 20764439Scg 20864439Scg if (via_waitvalid_codec(via)) 20964439Scg return 1; 21064439Scg 21164439Scg return via_rd(via, VIA_CODEC_CTL, 2); 21264439Scg} 21364439Scg 21470134Scgstatic kobj_method_t via_ac97_methods[] = { 21570134Scg KOBJMETHOD(ac97_read, via_read_codec), 21670134Scg KOBJMETHOD(ac97_write, via_write_codec), 21770134Scg { 0, 0 } 21870134Scg}; 21970134ScgAC97_DECLARE(via_ac97); 22064439Scg 22170134Scg/* -------------------------------------------------------------------- */ 22270134Scg 22364439Scg/* channel interface */ 22464439Scgstatic void * 22570134Scgviachan_init(kobj_t obj, void *devinfo, snd_dbuf *b, pcm_channel *c, int dir) 22664439Scg{ 22764439Scg struct via_info *via = devinfo; 22864439Scg struct via_chinfo *ch = (dir == PCMDIR_PLAY) ? &via->pch : &via->rch; 22964439Scg 23064439Scg ch->parent = via; 23164439Scg ch->channel = c; 23264439Scg ch->buffer = b; 23364439Scg 23470291Scg if (sndbuf_alloc(ch->buffer, via->parent_dmat, VIA_BUFFSIZE) == -1) return NULL; 23564439Scg return ch; 23664439Scg} 23764439Scg 23864439Scgstatic int 23970134Scgviachan_setdir(kobj_t obj, void *data, int dir) 24064439Scg{ 24164439Scg struct via_chinfo *ch = data; 24264439Scg struct via_info *via = ch->parent; 24364439Scg struct via_dma_op *ado; 24464439Scg int i, chunk_size; 24564439Scg int phys_addr, flag; 24664439Scg 24764439Scg ch->dir = dir; 24864439Scg /* 24964439Scg * Build the scatter/gather DMA (SGD) table. 25064439Scg * There are four slots in the table: two for play, two for record. 25164439Scg * This creates two half-buffers, one of which is playing; the other 25264439Scg * is feeding. 25364439Scg */ 25464439Scg ado = via->sgd_table; 25570291Scg chunk_size = sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN; 25664439Scg 25764439Scg if (dir == PCMDIR_REC) { 25864439Scg ado += SEGS_PER_CHAN; 25964439Scg } 26064439Scg 26170345Scg DEB(printf("SGD table located at va %p\n", ado)); 26270291Scg phys_addr = vtophys(sndbuf_getbuf(ch->buffer)); 26364439Scg for (i = 0; i < SEGS_PER_CHAN; i++) { 26464439Scg ado->ptr = phys_addr; 26564439Scg flag = (i == SEGS_PER_CHAN-1) ? 26664439Scg VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 26764439Scg ado->flags = flag | chunk_size; 26870345Scg DEB(printf("ado->ptr/flags = %x/%x\n", phys_addr, flag)); 26964439Scg phys_addr += chunk_size; 27064439Scg ado++; 27164439Scg } 27264439Scg return 0; 27364439Scg} 27464439Scg 27564439Scgstatic int 27670134Scgviachan_setformat(kobj_t obj, void *data, u_int32_t format) 27764439Scg{ 27864439Scg struct via_chinfo *ch = data; 27964439Scg struct via_info *via = ch->parent; 28064439Scg int mode, mode_set; 28164439Scg 28264439Scg mode_set = 0; 28364439Scg if (format & AFMT_STEREO) 28464439Scg mode_set |= VIA_RPMODE_STEREO; 28564439Scg if (format & AFMT_S16_LE) 28664439Scg mode_set |= VIA_RPMODE_16BIT; 28764439Scg 28864439Scg /* Set up for output format */ 28964439Scg if (ch->dir == PCMDIR_PLAY) { 29070345Scg DEB(printf("set play format: %x\n", format)); 29164439Scg mode = via_rd(via, VIA_PLAY_MODE, 1); 29264439Scg mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 29364439Scg mode |= mode_set; 29464439Scg via_wr(via, VIA_PLAY_MODE, mode, 1); 29564439Scg } 29664439Scg else { 29770345Scg DEB(printf("set record format: %x\n", format)); 29864439Scg mode = via_rd(via, VIA_RECORD_MODE, 1); 29964439Scg mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 30064439Scg mode |= mode_set; 30164439Scg via_wr(via, VIA_RECORD_MODE, mode, 1); 30264439Scg } 30364439Scg 30464439Scg return 0; 30564439Scg} 30664439Scg 30764439Scgstatic int 30870134Scgviachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 30964439Scg{ 31064439Scg struct via_chinfo *ch = data; 31164439Scg struct via_info *via = ch->parent; 31264439Scg 31364439Scg /* 31464439Scg * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 31564439Scg * upsampling is required. 31664439Scg * 31764439Scg * The VT82C686A does not perform upsampling, and neither do we. 31864439Scg * If the codec supports variable-rate audio (i.e. does the upsampling 31964439Scg * itself), then negotiate the rate with the codec. Otherwise, 32064439Scg * return 48 kHz cuz that's all you got. 32164439Scg */ 32264439Scg if (ch->dir == PCMDIR_PLAY) { 32370345Scg DEB(printf("requested play speed: %d\n", speed)); 32464439Scg if (via->codec_caps & AC97_CODEC_DOES_VRA) { 32570134Scg via_write_codec(NULL, via, AC97_REG_EXT_DAC_RATE, speed); 32670134Scg speed = via_read_codec(NULL, via, AC97_REG_EXT_DAC_RATE); 32764439Scg } 32864439Scg else { 32970345Scg DEB(printf("VRA not supported!\n")); 33064439Scg speed = 48000; 33164439Scg } 33270345Scg DEB(printf("obtained play speed: %d\n", speed)); 33364439Scg } 33464439Scg else { 33570345Scg DEB(printf("requested record speed: %d\n", speed)); 33664439Scg if (via->codec_caps & AC97_CODEC_DOES_VRA) { 33770134Scg via_write_codec(NULL, via, AC97_REG_EXT_ADC_RATE, speed); 33870134Scg speed = via_read_codec(NULL, via, AC97_REG_EXT_ADC_RATE); 33964439Scg } 34064439Scg else { 34170345Scg DEB(printf("VRA not supported!\n")); 34264439Scg speed = 48000; 34364439Scg } 34470345Scg DEB(printf("obtained record speed: %d\n", speed)); 34564439Scg } 34664439Scg return speed; 34764439Scg} 34864439Scg 34964439Scgstatic int 35070134Scgviachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 35164439Scg{ 35264439Scg struct via_chinfo *ch = data; 35364439Scg 35470291Scg return sndbuf_getsize(ch->buffer) / 2; 35564439Scg} 35664439Scg 35764439Scgstatic int 35870134Scgviachan_trigger(kobj_t obj, void *data, int go) 35964439Scg{ 36064439Scg struct via_chinfo *ch = data; 36164439Scg struct via_info *via = ch->parent; 36264439Scg struct via_dma_op *ado; 36364439Scg 36464439Scg if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD) return 0; 36564439Scg if (ch->dir == PCMDIR_PLAY) { 36664439Scg if (go == PCMTRIG_START) { 36764439Scg ado = &via->sgd_table[0]; 36870345Scg DEB(printf("ado located at va=%p pa=%x\n", ado, vtophys(ado))); 36964439Scg via_wr(via, VIA_PLAY_DMAOPS_BASE, vtophys(ado),4); 37064439Scg via_wr(via, VIA_PLAY_CONTROL, 37164439Scg VIA_RPCTRL_START, 1); 37264439Scg } 37364439Scg else { 37464439Scg /* Stop DMA */ 37564439Scg via_wr(via, VIA_PLAY_CONTROL, 37664439Scg VIA_RPCTRL_TERMINATE, 1); 37764439Scg } 37864439Scg } else { 37964439Scg if (go == PCMTRIG_START) { 38064439Scg ado = &via->sgd_table[SEGS_PER_CHAN]; 38170345Scg DEB(printf("ado located at va=%p pa=%x\n", ado, vtophys(ado))); 38264439Scg via_wr(via, VIA_RECORD_DMAOPS_BASE, 38364439Scg vtophys(ado),4); 38464439Scg via_wr(via, VIA_RECORD_CONTROL, 38564439Scg VIA_RPCTRL_START, 1); 38664439Scg } 38764439Scg else { 38864439Scg /* Stop DMA */ 38964439Scg via_wr(via, VIA_RECORD_CONTROL, 39064439Scg VIA_RPCTRL_TERMINATE, 1); 39164439Scg } 39264439Scg } 39364439Scg 39464439ScgDEB(printf("viachan_trigger: go=%d\n", go)); 39564439Scg return 0; 39664439Scg} 39764439Scg 39864439Scgstatic int 39970134Scgviachan_getptr(kobj_t obj, void *data) 40064439Scg{ 40164439Scg struct via_chinfo *ch = data; 40264439Scg struct via_info *via = ch->parent; 40364439Scg struct via_dma_op *ado; 40464439Scg int ptr, base, len, seg; 40564439Scg int base1; 40664439Scg 40764439Scg if (ch->dir == PCMDIR_PLAY) { 40864439Scg ado = &via->sgd_table[0]; 40964439Scg base1 = via_rd(via, VIA_PLAY_DMAOPS_BASE, 4); 41064439Scg len = via_rd(via, VIA_PLAY_DMAOPS_COUNT, 4); 41164439Scg base = via_rd(via, VIA_PLAY_DMAOPS_BASE, 4); 41264439Scg if (base != base1) { /* Avoid race hazzard */ 41364439Scg len = via_rd(via, VIA_PLAY_DMAOPS_COUNT, 4); 41464439Scg } 41570345Scg DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base)); 41664439Scg 41764439Scg /* Base points to SGD segment to do, one past current */ 41864439Scg 41964439Scg /* Determine how many segments have been done */ 42064439Scg seg = (base - vtophys(ado)) / sizeof(struct via_dma_op); 42164439Scg if (seg == 0) seg = SEGS_PER_CHAN; 42264439Scg 42364439Scg /* Now work out offset: seg less count */ 42470291Scg ptr = seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN - len; 42570345Scg DEB(printf("return ptr=%d\n", ptr)); 42664439Scg return ptr; 42764439Scg } 42864439Scg else { 42964439Scg base1 = via_rd(via, VIA_RECORD_DMAOPS_BASE, 4); 43064439Scg ado = &via->sgd_table[SEGS_PER_CHAN]; 43164439Scg len = via_rd(via, VIA_RECORD_DMAOPS_COUNT, 4); 43264439Scg base = via_rd(via, VIA_RECORD_DMAOPS_BASE, 4); 43364439Scg if (base != base1) { /* Avoid race hazzard */ 43464439Scg len = via_rd(via, VIA_RECORD_DMAOPS_COUNT, 4); 43564439Scg } 43670345Scg DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base)); 43764439Scg 43864439Scg /* Base points to next block to do, one past current */ 43964439Scg 44064439Scg /* Determine how many segments have been done */ 44164439Scg seg = (base - vtophys(ado)) / sizeof(struct via_dma_op); 44264439Scg if (seg == 0) seg = SEGS_PER_CHAN; 44364439Scg 44464439Scg /* Now work out offset: seg less count */ 44570291Scg ptr = seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN - len; 44664439Scg 44764439Scg /* DMA appears to operate on memory 'lines' of 32 bytes */ 44864439Scg /* so don't return any part line - it isn't in RAM yet */ 44964439Scg ptr = ptr & ~0x1f; 45070345Scg DEB(printf("return ptr=%d\n", ptr)); 45164439Scg return ptr; 45264439Scg } 45364439Scg return 0; 45464439Scg} 45564439Scg 45664439Scgstatic pcmchan_caps * 45770134Scgviachan_getcaps(kobj_t obj, void *data) 45864439Scg{ 45964439Scg struct via_chinfo *ch = data; 46064439Scg return (ch->dir == PCMDIR_PLAY) ? &via_playcaps : &via_reccaps; 46164439Scg} 46264439Scg 46370134Scgstatic kobj_method_t viachan_methods[] = { 46470134Scg KOBJMETHOD(channel_init, viachan_init), 46570134Scg KOBJMETHOD(channel_setdir, viachan_setdir), 46670134Scg KOBJMETHOD(channel_setformat, viachan_setformat), 46770134Scg KOBJMETHOD(channel_setspeed, viachan_setspeed), 46870134Scg KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 46970134Scg KOBJMETHOD(channel_trigger, viachan_trigger), 47070134Scg KOBJMETHOD(channel_getptr, viachan_getptr), 47170134Scg KOBJMETHOD(channel_getcaps, viachan_getcaps), 47270134Scg { 0, 0 } 47370134Scg}; 47470134ScgCHANNEL_DECLARE(viachan); 47570134Scg 47670134Scg/* -------------------------------------------------------------------- */ 47770134Scg 47864439Scgstatic void 47964439Scgvia_intr(void *p) 48064439Scg{ 48164439Scg struct via_info *via = p; 48264439Scg int st; 48364439Scg 48470345Scg /* DEB(printf("viachan_intr\n")); */ 48564439Scg /* Read channel */ 48664439Scg st = via_rd(via, VIA_PLAY_STAT, 1); 48764439Scg if (st & VIA_RPSTAT_INTR) { 48864439Scg via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 48964439Scg chn_intr(via->pch.channel); 49064439Scg } 49164439Scg 49264439Scg /* Write channel */ 49364439Scg st = via_rd(via, VIA_RECORD_STAT, 1); 49464439Scg if (st & VIA_RPSTAT_INTR) { 49564439Scg via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 49664439Scg chn_intr(via->rch.channel); 49764439Scg } 49864439Scg} 49964439Scg 50070134Scg/* 50170134Scg * Probe and attach the card 50270134Scg */ 50370134Scgstatic int 50470134Scgvia_probe(device_t dev) 50570134Scg{ 50670134Scg if (pci_get_devid(dev) == VIA_PCI_ID) { 50770345Scg device_set_desc(dev, "VIA VT82C686A"); 50870134Scg return 0; 50970134Scg } 51070134Scg return ENXIO; 51170134Scg} 51264439Scg 51370134Scg 51470134Scgvoid dma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 51570134Scg{ 51670134Scg} 51770134Scg 51870134Scg 51970134Scgstatic int 52070134Scgvia_attach(device_t dev) 52170134Scg{ 52270134Scg struct via_info *via = 0; 52370134Scg struct ac97_info *codec = 0; 52470134Scg char status[SND_STATUSLEN]; 52570134Scg 52670134Scg u_int32_t data; 52770134Scg 52870134Scg u_int16_t v; 52970134Scg bus_dmamap_t sgd_dma_map; 53070134Scg 53170134Scg if ((via = malloc(sizeof *via, M_DEVBUF, M_NOWAIT)) == NULL) { 53270134Scg device_printf(dev, "cannot allocate softc\n"); 53370134Scg return ENXIO; 53470134Scg } 53570134Scg bzero(via, sizeof *via); 53670134Scg 53770134Scg /* Get resources */ 53870134Scg data = pci_read_config(dev, PCIR_COMMAND, 2); 53970134Scg data |= (PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN); 54070134Scg pci_write_config(dev, PCIR_COMMAND, data, 2); 54170134Scg data = pci_read_config(dev, PCIR_COMMAND, 2); 54270134Scg 54370134Scg pci_write_config(dev, VIA_PCICONF_MISC, 54470134Scg VIA_PCICONF_ACLINKENAB | VIA_PCICONF_ACSGD | 54570134Scg VIA_PCICONF_ACNOTRST | VIA_PCICONF_ACVSR, 1); 54670134Scg 54770134Scg via->regid = PCIR_MAPS; 54870134Scg via->reg = bus_alloc_resource(dev, SYS_RES_IOPORT, &via->regid, 54970134Scg 0, ~0, 1, RF_ACTIVE); 55070134Scg if (!via->reg) { 55170345Scg device_printf(dev, "cannot allocate bus resource."); 55270134Scg goto bad; 55370134Scg } 55470134Scg via->st = rman_get_bustag(via->reg); 55570134Scg via->sh = rman_get_bushandle(via->reg); 55670134Scg 55770134Scg via->irqid = 0; 55870134Scg via->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &via->irqid, 55970134Scg 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 56070134Scg if (!via->irq 56170134Scg || bus_setup_intr(dev, via->irq, INTR_TYPE_TTY, via_intr, via, &via->ih)){ 56270134Scg device_printf(dev, "unable to map interrupt\n"); 56370134Scg goto bad; 56470134Scg } 56570134Scg 56670134Scg via_wr(via, VIA_PLAY_MODE, 56770134Scg VIA_RPMODE_AUTOSTART | 56870134Scg VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 56970134Scg via_wr(via, VIA_RECORD_MODE, 57070134Scg VIA_RPMODE_AUTOSTART | 57170134Scg VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 57270134Scg 57370134Scg codec = AC97_CREATE(dev, via, via_ac97); 57470134Scg if (!codec) goto bad; 57570134Scg 57670134Scg mixer_init(dev, ac97_getmixerclass(), codec); 57770134Scg 57870134Scg /* 57970134Scg * The mixer init resets the codec. So enabling VRA must be done 58070134Scg * afterwards. 58170134Scg */ 58270134Scg v = via_read_codec(NULL, via, AC97_REG_EXT_AUDIO_ID); 58370134Scg v &= (AC97_ENAB_VRA | AC97_ENAB_MICVRA); 58470134Scg via_write_codec(NULL, via, AC97_REG_EXT_AUDIO_STAT, v); 58570134Scg via->codec_caps = v; 58670134Scg { 58770134Scg v = via_read_codec(NULL, via, AC97_REG_EXT_AUDIO_STAT); 58870134Scg DEB(printf("init: codec stat: %d\n", v)); 58970134Scg } 59070134Scg 59170134Scg if (!(v & AC97_CODEC_DOES_VRA)) { 59270134Scg /* no VRA => can do only 48 kbps */ 59370134Scg via_playcaps.minspeed = 48000; 59470134Scg via_reccaps.minspeed = 48000; 59570134Scg } 59670134Scg 59770134Scg /* DMA tag for buffers */ 59870134Scg if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 59970134Scg /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 60070134Scg /*highaddr*/BUS_SPACE_MAXADDR, 60170134Scg /*filter*/NULL, /*filterarg*/NULL, 60270134Scg /*maxsize*/VIA_BUFFSIZE, /*nsegments*/1, /*maxsegz*/0x3ffff, 60370134Scg /*flags*/0, &via->parent_dmat) != 0) { 60470134Scg device_printf(dev, "unable to create dma tag\n"); 60570134Scg goto bad; 60670134Scg } 60770134Scg 60870134Scg /* 60970134Scg * DMA tag for SGD table. The 686 uses scatter/gather DMA and 61070134Scg * requires a list in memory of work to do. We need only 16 bytes 61170134Scg * for this list, and it is wasteful to allocate 16K. 61270134Scg */ 61370134Scg if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 61470134Scg /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 61570134Scg /*highaddr*/BUS_SPACE_MAXADDR, 61670134Scg /*filter*/NULL, /*filterarg*/NULL, 61770134Scg /*maxsize*/NSEGS * sizeof(struct via_dma_op), 61870134Scg /*nsegments*/1, /*maxsegz*/0x3ffff, 61970134Scg /*flags*/0, &via->sgd_dmat) != 0) { 62070134Scg device_printf(dev, "unable to create dma tag\n"); 62170134Scg goto bad; 62270134Scg } 62370134Scg 62470134Scg if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table, 62570134Scg BUS_DMA_NOWAIT, &sgd_dma_map) == -1) goto bad; 62670134Scg if (bus_dmamap_load(via->sgd_dmat, sgd_dma_map, via->sgd_table, 62770134Scg NSEGS * sizeof(struct via_dma_op), dma_cb, 0, 0)) goto bad; 62870134Scg 62970134Scg snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld", 63070134Scg rman_get_start(via->reg), rman_get_start(via->irq)); 63170134Scg 63270134Scg /* Register */ 63370134Scg if (pcm_register(dev, via, 1, 1)) goto bad; 63470134Scg pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via); 63570134Scg pcm_addchan(dev, PCMDIR_REC, &viachan_class, via); 63670134Scg pcm_setstatus(dev, status); 63770134Scg return 0; 63870134Scgbad: 63970134Scg if (codec) ac97_destroy(codec); 64070134Scg if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 64170134Scg if (via->ih) bus_teardown_intr(dev, via->irq, via->ih); 64270134Scg if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 64370134Scg if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat); 64470134Scg if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat); 64570134Scg if (via) free(via, M_DEVBUF); 64670134Scg return ENXIO; 64770134Scg} 64870134Scg 64970134Scgstatic int 65070134Scgvia_detach(device_t dev) 65170134Scg{ 65270134Scg int r; 65370134Scg struct via_info *via = 0; 65470134Scg 65570134Scg r = pcm_unregister(dev); 65670134Scg if (r) 65770134Scg return r; 65870134Scg 65970134Scg via = pcm_getdevinfo(dev); 66070134Scg bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 66170134Scg bus_teardown_intr(dev, via->irq, via->ih); 66270134Scg bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 66370134Scg bus_dma_tag_destroy(via->parent_dmat); 66470134Scg bus_dma_tag_destroy(via->sgd_dmat); 66570134Scg free(via, M_DEVBUF); 66670134Scg return 0; 66770134Scg} 66870134Scg 66970134Scg 67070134Scgstatic device_method_t via_methods[] = { 67170134Scg DEVMETHOD(device_probe, via_probe), 67270134Scg DEVMETHOD(device_attach, via_attach), 67370134Scg DEVMETHOD(device_detach, via_detach), 67470134Scg { 0, 0} 67570134Scg}; 67670134Scg 67770134Scgstatic driver_t via_driver = { 67870134Scg "pcm", 67970134Scg via_methods, 68070134Scg sizeof(snddev_info), 68170134Scg}; 68270134Scg 68370134Scgstatic devclass_t pcm_devclass; 68470134Scg 68570134ScgDRIVER_MODULE(via, pci, via_driver, pcm_devclass, 0, 0); 68670134ScgMODULE_DEPEND(via, snd_pcm, PCM_MINVER, PCM_PREFVER, PCM_MAXVER); 68770134ScgMODULE_VERSION(via, 1); 68870134Scg 68970134Scg 690