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freebsd-skq/sys/dev/sound/pci/via8233.c

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/*-
* Copyright (c) 2002 Orion Hodson <orion@freebsd.org>
* Portions of this code derived from via82c686.c:
* Copyright (c) 2000 David Jones <dej@ox.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Credits due to:
*
* Grzybowski Rafal, Russell Davies, Mark Handley, Daniel O'Connor for
* comments, machine time, testing patches, and patience. VIA for
* providing specs. ALSA for helpful comments and some register poke
* ordering.
*/
#include <dev/sound/pcm/sound.h>
#include <dev/sound/pcm/ac97.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <sys/sysctl.h>
#include <dev/sound/pci/via8233.h>
SND_DECLARE_FILE("$FreeBSD$");
#define VIA8233_PCI_ID 0x30591106
#define VIA8233_REV_ID_8233PRE 0x10
#define VIA8233_REV_ID_8233C 0x20
#define VIA8233_REV_ID_8233 0x30
#define VIA8233_REV_ID_8233A 0x40
#define VIA8233_REV_ID_8235 0x50
#define VIA8233_REV_ID_8237 0x60
#define VIA8233_REV_ID_8251 0x70
#define SEGS_PER_CHAN 2 /* Segments per channel */
#define NDXSCHANS 4 /* No of DXS channels */
#define NMSGDCHANS 1 /* No of multichannel SGD */
#define NWRCHANS 1 /* No of write channels */
#define NCHANS (NWRCHANS + NDXSCHANS + NMSGDCHANS)
#define NSEGS NCHANS * SEGS_PER_CHAN /* Segments in SGD table */
#define VIA_SEGS_MIN 2
#define VIA_SEGS_MAX 64
#define VIA_SEGS_DEFAULT 2
#define VIA_BLK_MIN 32
#define VIA_BLK_ALIGN (~(VIA_BLK_MIN - 1))
#define VIA_DEFAULT_BUFSZ 0x1000
/* we rely on this struct being packed to 64 bits */
struct via_dma_op {
volatile uint32_t ptr;
volatile uint32_t flags;
#define VIA_DMAOP_EOL 0x80000000
#define VIA_DMAOP_FLAG 0x40000000
#define VIA_DMAOP_STOP 0x20000000
#define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF)
};
struct via_info;
struct via_chinfo {
struct via_info *parent;
struct pcm_channel *channel;
struct snd_dbuf *buffer;
struct via_dma_op *sgd_table;
bus_addr_t sgd_addr;
int dir, rbase, active;
unsigned int blksz, blkcnt;
unsigned int ptr, prevptr;
};
struct via_info {
device_t dev;
bus_space_tag_t st;
bus_space_handle_t sh;
bus_dma_tag_t parent_dmat;
bus_dma_tag_t sgd_dmat;
bus_dmamap_t sgd_dmamap;
bus_addr_t sgd_addr;
struct resource *reg, *irq;
int regid, irqid;
void *ih;
struct ac97_info *codec;
unsigned int bufsz, blkcnt;
int dxs_src, dma_eol_wake;
struct via_chinfo pch[NDXSCHANS + NMSGDCHANS];
struct via_chinfo rch[NWRCHANS];
struct via_dma_op *sgd_table;
uint16_t codec_caps;
uint16_t n_dxs_registered;
int play_num, rec_num;
struct mtx *lock;
struct callout poll_timer;
int poll_ticks, polling;
};
static uint32_t via_fmt[] = {
AFMT_U8,
AFMT_STEREO | AFMT_U8,
AFMT_S16_LE,
AFMT_STEREO | AFMT_S16_LE,
0
};
static struct pcmchan_caps via_vracaps = { 4000, 48000, via_fmt, 0 };
static struct pcmchan_caps via_caps = { 48000, 48000, via_fmt, 0 };
static __inline int
via_chan_active(struct via_info *via)
{
int i, ret = 0;
if (via == NULL)
return (0);
for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++)
ret += via->pch[i].active;
for (i = 0; i < NWRCHANS; i++)
ret += via->rch[i].active;
return (ret);
}
#ifdef SND_DYNSYSCTL
static int
sysctl_via8233_spdif_enable(SYSCTL_HANDLER_ARGS)
{
struct via_info *via;
device_t dev;
uint32_t r;
int err, new_en;
dev = oidp->oid_arg1;
via = pcm_getdevinfo(dev);
snd_mtxlock(via->lock);
r = pci_read_config(dev, VIA_PCI_SPDIF, 1);
snd_mtxunlock(via->lock);
new_en = (r & VIA_SPDIF_EN) ? 1 : 0;
err = sysctl_handle_int(oidp, &new_en, 0, req);
if (err || req->newptr == NULL)
return (err);
if (new_en < 0 || new_en > 1)
return (EINVAL);
if (new_en)
r |= VIA_SPDIF_EN;
else
r &= ~VIA_SPDIF_EN;
snd_mtxlock(via->lock);
pci_write_config(dev, VIA_PCI_SPDIF, r, 1);
snd_mtxunlock(via->lock);
return (0);
}
static int
sysctl_via8233_dxs_src(SYSCTL_HANDLER_ARGS)
{
struct via_info *via;
device_t dev;
int err, val;
dev = oidp->oid_arg1;
via = pcm_getdevinfo(dev);
snd_mtxlock(via->lock);
val = via->dxs_src;
snd_mtxunlock(via->lock);
err = sysctl_handle_int(oidp, &val, 0, req);
if (err || req->newptr == NULL)
return (err);
if (val < 0 || val > 1)
return (EINVAL);
snd_mtxlock(via->lock);
via->dxs_src = val;
snd_mtxunlock(via->lock);
return (0);
}
static int
sysctl_via_polling(SYSCTL_HANDLER_ARGS)
{
struct via_info *via;
device_t dev;
int err, val;
dev = oidp->oid_arg1;
via = pcm_getdevinfo(dev);
if (via == NULL)
return (EINVAL);
snd_mtxlock(via->lock);
val = via->polling;
snd_mtxunlock(via->lock);
err = sysctl_handle_int(oidp, &val, 0, req);
if (err || req->newptr == NULL)
return (err);
if (val < 0 || val > 1)
return (EINVAL);
snd_mtxlock(via->lock);
if (val != via->polling) {
if (via_chan_active(via) != 0)
err = EBUSY;
else if (val == 0)
via->polling = 0;
else
via->polling = 1;
}
snd_mtxunlock(via->lock);
return (err);
}
#endif /* SND_DYNSYSCTL */
static void
via_init_sysctls(device_t dev)
{
#ifdef SND_DYNSYSCTL
/* XXX: an user should be able to set this with a control tool,
if not done before 7.0-RELEASE, this needs to be converted to
a device specific sysctl "dev.pcm.X.yyy" via device_get_sysctl_*()
as discussed on multimedia@ in msg-id <861wujij2q.fsf@xps.des.no> */
SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"spdif_enabled", CTLTYPE_INT | CTLFLAG_RW, dev, sizeof(dev),
sysctl_via8233_spdif_enable, "I",
"Enable S/PDIF output on primary playback channel");
SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"dxs_src", CTLTYPE_INT | CTLFLAG_RW, dev, sizeof(dev),
sysctl_via8233_dxs_src, "I",
"Enable VIA DXS Sample Rate Converter");
SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"polling", CTLTYPE_INT | CTLFLAG_RW, dev, sizeof(dev),
sysctl_via_polling, "I",
"Enable polling mode");
#endif
}
static __inline uint32_t
via_rd(struct via_info *via, int regno, int size)
{
switch (size) {
case 1:
return (bus_space_read_1(via->st, via->sh, regno));
case 2:
return (bus_space_read_2(via->st, via->sh, regno));
case 4:
return (bus_space_read_4(via->st, via->sh, regno));
default:
return (0xFFFFFFFF);
}
}
static __inline void
via_wr(struct via_info *via, int regno, uint32_t data, int size)
{
switch (size) {
case 1:
bus_space_write_1(via->st, via->sh, regno, data);
break;
case 2:
bus_space_write_2(via->st, via->sh, regno, data);
break;
case 4:
bus_space_write_4(via->st, via->sh, regno, data);
break;
}
}
/* -------------------------------------------------------------------- */
/* Codec interface */
static int
via_waitready_codec(struct via_info *via)
{
int i;
/* poll until codec not busy */
for (i = 0; i < 1000; i++) {
if ((via_rd(via, VIA_AC97_CONTROL, 4) & VIA_AC97_BUSY) == 0)
return (0);
DELAY(1);
}
device_printf(via->dev, "%s: codec busy\n", __func__);
return (1);
}
static int
via_waitvalid_codec(struct via_info *via)
{
int i;
/* poll until codec valid */
for (i = 0; i < 1000; i++) {
if (via_rd(via, VIA_AC97_CONTROL, 4) & VIA_AC97_CODEC00_VALID)
return (0);
DELAY(1);
}
device_printf(via->dev, "%s: codec invalid\n", __func__);
return (1);
}
static int
via_write_codec(kobj_t obj, void *addr, int reg, uint32_t val)
{
struct via_info *via = addr;
if (via_waitready_codec(via))
return (-1);
via_wr(via, VIA_AC97_CONTROL,
VIA_AC97_CODEC00_VALID | VIA_AC97_INDEX(reg) |
VIA_AC97_DATA(val), 4);
return (0);
}
static int
via_read_codec(kobj_t obj, void *addr, int reg)
{
struct via_info *via = addr;
if (via_waitready_codec(via))
return (-1);
via_wr(via, VIA_AC97_CONTROL, VIA_AC97_CODEC00_VALID |
VIA_AC97_READ | VIA_AC97_INDEX(reg), 4);
if (via_waitready_codec(via))
return (-1);
if (via_waitvalid_codec(via))
return (-1);
return (via_rd(via, VIA_AC97_CONTROL, 2));
}
static kobj_method_t via_ac97_methods[] = {
KOBJMETHOD(ac97_read, via_read_codec),
KOBJMETHOD(ac97_write, via_write_codec),
{ 0, 0 }
};
AC97_DECLARE(via_ac97);
/* -------------------------------------------------------------------- */
static int
via_buildsgdt(struct via_chinfo *ch)
{
uint32_t phys_addr, flag;
int i;
phys_addr = sndbuf_getbufaddr(ch->buffer);
for (i = 0; i < ch->blkcnt; i++) {
flag = (i == ch->blkcnt - 1) ? VIA_DMAOP_EOL : VIA_DMAOP_FLAG;
ch->sgd_table[i].ptr = phys_addr + (i * ch->blksz);
ch->sgd_table[i].flags = flag | ch->blksz;
}
return (0);
}
/* -------------------------------------------------------------------- */
/* Format setting functions */
static int
via8233wr_setformat(kobj_t obj, void *data, uint32_t format)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
uint32_t f = WR_FORMAT_STOP_INDEX;
if (format & AFMT_STEREO)
f |= WR_FORMAT_STEREO;
if (format & AFMT_S16_LE)
f |= WR_FORMAT_16BIT;
snd_mtxlock(via->lock);
via_wr(via, VIA_WR0_FORMAT, f, 4);
snd_mtxunlock(via->lock);
return (0);
}
static int
via8233dxs_setformat(kobj_t obj, void *data, uint32_t format)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
uint32_t r, v;
r = ch->rbase + VIA8233_RP_DXS_RATEFMT;
snd_mtxlock(via->lock);
v = via_rd(via, r, 4);
v &= ~(VIA8233_DXS_RATEFMT_STEREO | VIA8233_DXS_RATEFMT_16BIT);
if (format & AFMT_STEREO)
v |= VIA8233_DXS_RATEFMT_STEREO;
if (format & AFMT_16BIT)
v |= VIA8233_DXS_RATEFMT_16BIT;
via_wr(via, r, v, 4);
snd_mtxunlock(via->lock);
return (0);
}
static int
via8233msgd_setformat(kobj_t obj, void *data, uint32_t format)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
uint32_t s = 0xff000000;
uint8_t v = (format & AFMT_S16_LE) ? MC_SGD_16BIT : MC_SGD_8BIT;
if (format & AFMT_STEREO) {
v |= MC_SGD_CHANNELS(2);
s |= SLOT3(1) | SLOT4(2);
} else {
v |= MC_SGD_CHANNELS(1);
s |= SLOT3(1) | SLOT4(1);
}
snd_mtxlock(via->lock);
via_wr(via, VIA_MC_SLOT_SELECT, s, 4);
via_wr(via, VIA_MC_SGD_FORMAT, v, 1);
snd_mtxunlock(via->lock);
return (0);
}
/* -------------------------------------------------------------------- */
/* Speed setting functions */
static int
via8233wr_setspeed(kobj_t obj, void *data, uint32_t speed)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
if (via->codec_caps & AC97_EXTCAP_VRA)
return (ac97_setrate(via->codec, AC97_REGEXT_LADCRATE, speed));
return (48000);
}
static int
via8233dxs_setspeed(kobj_t obj, void *data, uint32_t speed)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
uint32_t r, v;
r = ch->rbase + VIA8233_RP_DXS_RATEFMT;
snd_mtxlock(via->lock);
v = via_rd(via, r, 4) & ~VIA8233_DXS_RATEFMT_48K;
/* Careful to avoid overflow (divide by 48 per vt8233c docs) */
v |= VIA8233_DXS_RATEFMT_48K * (speed / 48) / (48000 / 48);
via_wr(via, r, v, 4);
snd_mtxunlock(via->lock);
return (speed);
}
static int
via8233msgd_setspeed(kobj_t obj, void *data, uint32_t speed)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
if (via->codec_caps & AC97_EXTCAP_VRA)
return (ac97_setrate(via->codec, AC97_REGEXT_FDACRATE, speed));
return (48000);
}
/* -------------------------------------------------------------------- */
/* Format probing functions */
static struct pcmchan_caps *
via8233wr_getcaps(kobj_t obj, void *data)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
/* Controlled by ac97 registers */
if (via->codec_caps & AC97_EXTCAP_VRA)
return (&via_vracaps);
return (&via_caps);
}
static struct pcmchan_caps *
via8233dxs_getcaps(kobj_t obj, void *data)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
/*
* Controlled by onboard registers
*
* Apparently, few boards can do DXS sample rate
* conversion.
*/
if (via->dxs_src)
return (&via_vracaps);
return (&via_caps);
}
static struct pcmchan_caps *
via8233msgd_getcaps(kobj_t obj, void *data)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
/* Controlled by ac97 registers */
if (via->codec_caps & AC97_EXTCAP_VRA)
return (&via_vracaps);
return (&via_caps);
}
/* -------------------------------------------------------------------- */
/* Common functions */
static int
via8233chan_setfragments(kobj_t obj, void *data,
uint32_t blksz, uint32_t blkcnt)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
blksz &= VIA_BLK_ALIGN;
if (blksz > (sndbuf_getmaxsize(ch->buffer) / VIA_SEGS_MIN))
blksz = sndbuf_getmaxsize(ch->buffer) / VIA_SEGS_MIN;
if (blksz < VIA_BLK_MIN)
blksz = VIA_BLK_MIN;
if (blkcnt > VIA_SEGS_MAX)
blkcnt = VIA_SEGS_MAX;
if (blkcnt < VIA_SEGS_MIN)
blkcnt = VIA_SEGS_MIN;
while ((blksz * blkcnt) > sndbuf_getmaxsize(ch->buffer)) {
if ((blkcnt >> 1) >= VIA_SEGS_MIN)
blkcnt >>= 1;
else if ((blksz >> 1) >= VIA_BLK_MIN)
blksz >>= 1;
else
break;
}
if ((sndbuf_getblksz(ch->buffer) != blksz ||
sndbuf_getblkcnt(ch->buffer) != blkcnt) &&
sndbuf_resize(ch->buffer, blkcnt, blksz) != 0)
device_printf(via->dev, "%s: failed blksz=%u blkcnt=%u\n",
__func__, blksz, blkcnt);
ch->blksz = sndbuf_getblksz(ch->buffer);
ch->blkcnt = sndbuf_getblkcnt(ch->buffer);
return (1);
}
static int
via8233chan_setblocksize(kobj_t obj, void *data, uint32_t blksz)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
via8233chan_setfragments(obj, data, blksz, via->blkcnt);
return (ch->blksz);
}
static int
via8233chan_getptr(kobj_t obj, void *data)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
uint32_t v, index, count;
int ptr;
snd_mtxlock(via->lock);
if (via->polling != 0) {
ptr = ch->ptr;
snd_mtxunlock(via->lock);
} else {
v = via_rd(via, ch->rbase + VIA_RP_CURRENT_COUNT, 4);
snd_mtxunlock(via->lock);
index = v >> 24; /* Last completed buffer */
count = v & 0x00ffffff; /* Bytes remaining */
ptr = (index + 1) * ch->blksz - count;
ptr %= ch->blkcnt * ch->blksz; /* Wrap to available space */
}
return (ptr);
}
static void
via8233chan_reset(struct via_info *via, struct via_chinfo *ch)
{
via_wr(via, ch->rbase + VIA_RP_CONTROL, SGD_CONTROL_STOP, 1);
via_wr(via, ch->rbase + VIA_RP_CONTROL, 0x00, 1);
via_wr(via, ch->rbase + VIA_RP_STATUS,
SGD_STATUS_EOL | SGD_STATUS_FLAG, 1);
}
/* -------------------------------------------------------------------- */
/* Channel initialization functions */
static void
via8233chan_sgdinit(struct via_info *via, struct via_chinfo *ch, int chnum)
{
ch->sgd_table = &via->sgd_table[chnum * VIA_SEGS_MAX];
ch->sgd_addr = via->sgd_addr + chnum * VIA_SEGS_MAX *
sizeof(struct via_dma_op);
}
static void*
via8233wr_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
struct pcm_channel *c, int dir)
{
struct via_info *via = devinfo;
struct via_chinfo *ch;
int num;
snd_mtxlock(via->lock);
num = via->rec_num++;
ch = &via->rch[num];
ch->parent = via;
ch->channel = c;
ch->buffer = b;
ch->dir = dir;
ch->blkcnt = via->blkcnt;
ch->rbase = VIA_WR_BASE(num);
via_wr(via, ch->rbase + VIA_WR_RP_SGD_FORMAT, WR_FIFO_ENABLE, 1);
snd_mtxunlock(via->lock);
if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0)
return (NULL);
snd_mtxlock(via->lock);
via8233chan_sgdinit(via, ch, num);
via8233chan_reset(via, ch);
snd_mtxunlock(via->lock);
return (ch);
}
static void*
via8233dxs_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
struct pcm_channel *c, int dir)
{
struct via_info *via = devinfo;
struct via_chinfo *ch;
int num;
snd_mtxlock(via->lock);
num = via->play_num++;
ch = &via->pch[num];
ch->parent = via;
ch->channel = c;
ch->buffer = b;
ch->dir = dir;
ch->blkcnt = via->blkcnt;
/*
* All cards apparently support DXS3, but not other DXS
* channels. We therefore want to align first DXS channel to
* DXS3.
*/
ch->rbase = VIA_DXS_BASE(NDXSCHANS - 1 - via->n_dxs_registered);
via->n_dxs_registered++;
snd_mtxunlock(via->lock);
if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0)
return (NULL);
snd_mtxlock(via->lock);
via8233chan_sgdinit(via, ch, NWRCHANS + num);
via8233chan_reset(via, ch);
snd_mtxunlock(via->lock);
return (ch);
}
static void*
via8233msgd_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
struct pcm_channel *c, int dir)
{
struct via_info *via = devinfo;
struct via_chinfo *ch;
int num;
snd_mtxlock(via->lock);
num = via->play_num++;
ch = &via->pch[num];
ch->parent = via;
ch->channel = c;
ch->buffer = b;
ch->dir = dir;
ch->rbase = VIA_MC_SGD_STATUS;
ch->blkcnt = via->blkcnt;
snd_mtxunlock(via->lock);
if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0)
return (NULL);
snd_mtxlock(via->lock);
via8233chan_sgdinit(via, ch, NWRCHANS + num);
via8233chan_reset(via, ch);
snd_mtxunlock(via->lock);
return (ch);
}
static void
via8233chan_mute(struct via_info *via, struct via_chinfo *ch, int muted)
{
if (BASE_IS_VIA_DXS_REG(ch->rbase)) {
int r;
muted = (muted) ? VIA8233_DXS_MUTE : 0;
via_wr(via, ch->rbase + VIA8233_RP_DXS_LVOL, muted, 1);
via_wr(via, ch->rbase + VIA8233_RP_DXS_RVOL, muted, 1);
r = via_rd(via, ch->rbase + VIA8233_RP_DXS_LVOL, 1) &
VIA8233_DXS_MUTE;
if (r != muted)
device_printf(via->dev,
"%s: failed to set dxs volume "
"(dxs base 0x%02x).\n", __func__, ch->rbase);
}
}
static __inline int
via_poll_channel(struct via_chinfo *ch)
{
struct via_info *via;
uint32_t sz, delta;
uint32_t v, index, count;
int ptr;
if (ch == NULL || ch->channel == NULL || ch->active == 0)
return (0);
via = ch->parent;
sz = ch->blksz * ch->blkcnt;
v = via_rd(via, ch->rbase + VIA_RP_CURRENT_COUNT, 4);
index = v >> 24;
count = v & 0x00ffffff;
ptr = ((index + 1) * ch->blksz) - count;
ptr %= sz;
ptr &= ~(ch->blksz - 1);
ch->ptr = ptr;
delta = (sz + ptr - ch->prevptr) % sz;
if (delta < ch->blksz)
return (0);
ch->prevptr = ptr;
return (1);
}
static void
via_poll_callback(void *arg)
{
struct via_info *via = arg;
uint32_t ptrigger = 0, rtrigger = 0;
int i;
if (via == NULL)
return;
snd_mtxlock(via->lock);
if (via->polling == 0 || via_chan_active(via) == 0) {
snd_mtxunlock(via->lock);
return;
}
for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++)
ptrigger |= (via_poll_channel(&via->pch[i]) != 0) ?
(1 << i) : 0;
for (i = 0; i < NWRCHANS; i++)
rtrigger |= (via_poll_channel(&via->rch[i]) != 0) ?
(1 << i) : 0;
/* XXX */
callout_reset(&via->poll_timer, 1/*via->poll_ticks*/,
via_poll_callback, via);
snd_mtxunlock(via->lock);
for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++) {
if (ptrigger & (1 << i))
chn_intr(via->pch[i].channel);
}
for (i = 0; i < NWRCHANS; i++) {
if (rtrigger & (1 << i))
chn_intr(via->rch[i].channel);
}
}
static int
via_poll_ticks(struct via_info *via)
{
struct via_chinfo *ch;
int i;
int ret = hz;
int pollticks;
for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++) {
ch = &via->pch[i];
if (ch->channel == NULL || ch->active == 0)
continue;
pollticks = ((uint64_t)hz * ch->blksz) /
((uint64_t)sndbuf_getbps(ch->buffer) *
sndbuf_getspd(ch->buffer));
pollticks >>= 2;
if (pollticks > hz)
pollticks = hz;
if (pollticks < 1)
pollticks = 1;
if (pollticks < ret)
ret = pollticks;
}
for (i = 0; i < NWRCHANS; i++) {
ch = &via->rch[i];
if (ch->channel == NULL || ch->active == 0)
continue;
pollticks = ((uint64_t)hz * ch->blksz) /
((uint64_t)sndbuf_getbps(ch->buffer) *
sndbuf_getspd(ch->buffer));
pollticks >>= 2;
if (pollticks > hz)
pollticks = hz;
if (pollticks < 1)
pollticks = 1;
if (pollticks < ret)
ret = pollticks;
}
return (ret);
}
static int
via8233chan_trigger(kobj_t obj, void* data, int go)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
int pollticks;
if (!PCMTRIG_COMMON(go))
return (0);
snd_mtxlock(via->lock);
switch(go) {
case PCMTRIG_START:
via_buildsgdt(ch);
via8233chan_mute(via, ch, 0);
via_wr(via, ch->rbase + VIA_RP_TABLE_PTR, ch->sgd_addr, 4);
if (via->polling != 0) {
ch->ptr = 0;
ch->prevptr = 0;
pollticks = ((uint64_t)hz * ch->blksz) /
((uint64_t)sndbuf_getbps(ch->buffer) *
sndbuf_getspd(ch->buffer));
pollticks >>= 2;
if (pollticks > hz)
pollticks = hz;
if (pollticks < 1)
pollticks = 1;
if (via_chan_active(via) == 0 ||
pollticks < via->poll_ticks) {
if (bootverbose) {
if (via_chan_active(via) == 0)
printf("%s: pollticks=%d\n",
__func__, pollticks);
else
printf("%s: "
"pollticks %d -> %d\n",
__func__, via->poll_ticks,
pollticks);
}
via->poll_ticks = pollticks;
callout_reset(&via->poll_timer, 1,
via_poll_callback, via);
}
}
via_wr(via, ch->rbase + VIA_RP_CONTROL,
SGD_CONTROL_START | SGD_CONTROL_AUTOSTART |
((via->polling == 0) ?
(SGD_CONTROL_I_EOL | SGD_CONTROL_I_FLAG) : 0), 1);
ch->active = 1;
break;
case PCMTRIG_STOP:
case PCMTRIG_ABORT:
via_wr(via, ch->rbase + VIA_RP_CONTROL, SGD_CONTROL_STOP, 1);
via8233chan_mute(via, ch, 1);
via8233chan_reset(via, ch);
ch->active = 0;
if (via->polling != 0) {
if (via_chan_active(via) == 0) {
callout_stop(&via->poll_timer);
via->poll_ticks = 1;
} else {
pollticks = via_poll_ticks(via);
if (pollticks > via->poll_ticks) {
if (bootverbose)
printf("%s: pollticks "
"%d -> %d\n",
__func__, via->poll_ticks,
pollticks);
via->poll_ticks = pollticks;
callout_reset(&via->poll_timer,
1, via_poll_callback,
via);
}
}
}
break;
default:
break;
}
snd_mtxunlock(via->lock);
return (0);
}
static kobj_method_t via8233wr_methods[] = {
KOBJMETHOD(channel_init, via8233wr_init),
KOBJMETHOD(channel_setformat, via8233wr_setformat),
KOBJMETHOD(channel_setspeed, via8233wr_setspeed),
KOBJMETHOD(channel_getcaps, via8233wr_getcaps),
KOBJMETHOD(channel_setblocksize, via8233chan_setblocksize),
KOBJMETHOD(channel_setfragments, via8233chan_setfragments),
KOBJMETHOD(channel_trigger, via8233chan_trigger),
KOBJMETHOD(channel_getptr, via8233chan_getptr),
{ 0, 0 }
};
CHANNEL_DECLARE(via8233wr);
static kobj_method_t via8233dxs_methods[] = {
KOBJMETHOD(channel_init, via8233dxs_init),
KOBJMETHOD(channel_setformat, via8233dxs_setformat),
KOBJMETHOD(channel_setspeed, via8233dxs_setspeed),
KOBJMETHOD(channel_getcaps, via8233dxs_getcaps),
KOBJMETHOD(channel_setblocksize, via8233chan_setblocksize),
KOBJMETHOD(channel_setfragments, via8233chan_setfragments),
KOBJMETHOD(channel_trigger, via8233chan_trigger),
KOBJMETHOD(channel_getptr, via8233chan_getptr),
{ 0, 0 }
};
CHANNEL_DECLARE(via8233dxs);
static kobj_method_t via8233msgd_methods[] = {
KOBJMETHOD(channel_init, via8233msgd_init),
KOBJMETHOD(channel_setformat, via8233msgd_setformat),
KOBJMETHOD(channel_setspeed, via8233msgd_setspeed),
KOBJMETHOD(channel_getcaps, via8233msgd_getcaps),
KOBJMETHOD(channel_setblocksize, via8233chan_setblocksize),
KOBJMETHOD(channel_setfragments, via8233chan_setfragments),
KOBJMETHOD(channel_trigger, via8233chan_trigger),
KOBJMETHOD(channel_getptr, via8233chan_getptr),
{ 0, 0 }
};
CHANNEL_DECLARE(via8233msgd);
/* -------------------------------------------------------------------- */
static void
via_intr(void *p)
{
struct via_info *via = p;
uint32_t ptrigger = 0, rtrigger = 0;
int i, reg, stat;
snd_mtxlock(via->lock);
if (via->polling != 0) {
snd_mtxunlock(via->lock);
return;
}
/* Poll playback channels */
for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++) {
if (via->pch[i].channel == NULL || via->pch[i].active == 0)
continue;
reg = via->pch[i].rbase + VIA_RP_STATUS;
stat = via_rd(via, reg, 1);
if (stat & SGD_STATUS_INTR) {
if (via->dma_eol_wake && ((stat & SGD_STATUS_EOL) ||
!(stat & SGD_STATUS_ACTIVE)))
via_wr(via, via->pch[i].rbase + VIA_RP_CONTROL,
SGD_CONTROL_START | SGD_CONTROL_AUTOSTART |
SGD_CONTROL_I_EOL | SGD_CONTROL_I_FLAG, 1);
via_wr(via, reg, stat, 1);
ptrigger |= 1 << i;
}
}
/* Poll record channels */
for (i = 0; i < NWRCHANS; i++) {
if (via->rch[i].channel == NULL || via->rch[i].active == 0)
continue;
reg = via->rch[i].rbase + VIA_RP_STATUS;
stat = via_rd(via, reg, 1);
if (stat & SGD_STATUS_INTR) {
if (via->dma_eol_wake && ((stat & SGD_STATUS_EOL) ||
!(stat & SGD_STATUS_ACTIVE)))
via_wr(via, via->rch[i].rbase + VIA_RP_CONTROL,
SGD_CONTROL_START | SGD_CONTROL_AUTOSTART |
SGD_CONTROL_I_EOL | SGD_CONTROL_I_FLAG, 1);
via_wr(via, reg, stat, 1);
rtrigger |= 1 << i;
}
}
snd_mtxunlock(via->lock);
for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++) {
if (ptrigger & (1 << i))
chn_intr(via->pch[i].channel);
}
for (i = 0; i < NWRCHANS; i++) {
if (rtrigger & (1 << i))
chn_intr(via->rch[i].channel);
}
}
/*
* Probe and attach the card
*/
static int
via_probe(device_t dev)
{
switch(pci_get_devid(dev)) {
case VIA8233_PCI_ID:
switch(pci_get_revid(dev)) {
case VIA8233_REV_ID_8233PRE:
device_set_desc(dev, "VIA VT8233 (pre)");
return (BUS_PROBE_DEFAULT);
case VIA8233_REV_ID_8233C:
device_set_desc(dev, "VIA VT8233C");
return (BUS_PROBE_DEFAULT);
case VIA8233_REV_ID_8233:
device_set_desc(dev, "VIA VT8233");
return (BUS_PROBE_DEFAULT);
case VIA8233_REV_ID_8233A:
device_set_desc(dev, "VIA VT8233A");
return (BUS_PROBE_DEFAULT);
case VIA8233_REV_ID_8235:
device_set_desc(dev, "VIA VT8235");
return (BUS_PROBE_DEFAULT);
case VIA8233_REV_ID_8237:
device_set_desc(dev, "VIA VT8237");
return (BUS_PROBE_DEFAULT);
case VIA8233_REV_ID_8251:
device_set_desc(dev, "VIA VT8251");
return (BUS_PROBE_DEFAULT);
default:
device_set_desc(dev, "VIA VT8233X"); /* Unknown */
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static void
dma_cb(void *p, bus_dma_segment_t *bds, int a, int b)
{
struct via_info *via = (struct via_info *)p;
via->sgd_addr = bds->ds_addr;
}
static int
via_chip_init(device_t dev)
{
uint32_t data, cnt;
/* Wake up and reset AC97 if necessary */
data = pci_read_config(dev, VIA_PCI_ACLINK_STAT, 1);
if ((data & VIA_PCI_ACLINK_C00_READY) == 0) {
/* Cold reset per ac97r2.3 spec (page 95) */
/* Assert low */
pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
VIA_PCI_ACLINK_EN, 1);
/* Wait T_rst_low */
DELAY(100);
/* Assert high */
pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
VIA_PCI_ACLINK_EN | VIA_PCI_ACLINK_NRST, 1);
/* Wait T_rst2clk */
DELAY(5);
/* Assert low */
pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
VIA_PCI_ACLINK_EN, 1);
} else {
/* Warm reset */
/* Force no sync */
pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
VIA_PCI_ACLINK_EN, 1);
DELAY(100);
/* Sync */
pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
VIA_PCI_ACLINK_EN | VIA_PCI_ACLINK_SYNC, 1);
/* Wait T_sync_high */
DELAY(5);
/* Force no sync */
pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
VIA_PCI_ACLINK_EN, 1);
/* Wait T_sync2clk */
DELAY(5);
}
/* Power everything up */
pci_write_config(dev, VIA_PCI_ACLINK_CTRL, VIA_PCI_ACLINK_DESIRED, 1);
/* Wait for codec to become ready (largest reported delay 310ms) */
for (cnt = 0; cnt < 2000; cnt++) {
data = pci_read_config(dev, VIA_PCI_ACLINK_STAT, 1);
if (data & VIA_PCI_ACLINK_C00_READY)
return (0);
DELAY(5000);
}
device_printf(dev, "primary codec not ready (cnt = 0x%02x)\n", cnt);
return (ENXIO);
}
static int
via_attach(device_t dev)
{
struct via_info *via = 0;
char status[SND_STATUSLEN];
int i, via_dxs_disabled, via_dxs_src, via_dxs_chnum, via_sgd_chnum;
int nsegs;
uint32_t revid;
via = malloc(sizeof *via, M_DEVBUF, M_WAITOK | M_ZERO);
via->lock = snd_mtxcreate(device_get_nameunit(dev),
"snd_via8233 softc");
via->dev = dev;
callout_init(&via->poll_timer, CALLOUT_MPSAFE);
via->poll_ticks = 1;
if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "polling", &i) == 0 && i != 0)
via->polling = 1;
else
via->polling = 0;
pci_set_powerstate(dev, PCI_POWERSTATE_D0);
pci_enable_busmaster(dev);
via->regid = PCIR_BAR(0);
via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &via->regid,
RF_ACTIVE);
if (!via->reg) {
device_printf(dev, "cannot allocate bus resource.");
goto bad;
}
via->st = rman_get_bustag(via->reg);
via->sh = rman_get_bushandle(via->reg);
via->irqid = 0;
via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid,
RF_ACTIVE | RF_SHAREABLE);
if (!via->irq ||
snd_setup_intr(dev, via->irq, INTR_MPSAFE,
via_intr, via, &via->ih)) {
device_printf(dev, "unable to map interrupt\n");
goto bad;
}
via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536);
if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "blocksize", &i) == 0 && i > 0) {
i &= VIA_BLK_ALIGN;
if (i < VIA_BLK_MIN)
i = VIA_BLK_MIN;
via->blkcnt = via->bufsz / i;
i = 0;
while (via->blkcnt >> i)
i++;
via->blkcnt = 1 << (i - 1);
if (via->blkcnt < VIA_SEGS_MIN)
via->blkcnt = VIA_SEGS_MIN;
else if (via->blkcnt > VIA_SEGS_MAX)
via->blkcnt = VIA_SEGS_MAX;
} else
via->blkcnt = VIA_SEGS_DEFAULT;
revid = pci_get_revid(dev);
/*
* VIA8251 lost its interrupt after DMA EOL, and need
* a gentle spank on its face within interrupt handler.
*/
if (revid == VIA8233_REV_ID_8251)
via->dma_eol_wake = 1;
else
via->dma_eol_wake = 0;
/*
* Decide whether DXS had to be disabled or not
*/
if (revid == VIA8233_REV_ID_8233A) {
/*
* DXS channel is disabled. Reports from multiple users
* that it plays at half-speed. Do not see this behaviour
* on available 8233C or when emulating 8233A register set
* on 8233C (either with or without ac97 VRA).
*/
via_dxs_disabled = 1;
} else if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "via_dxs_disabled",
&via_dxs_disabled) == 0)
via_dxs_disabled = (via_dxs_disabled > 0) ? 1 : 0;
else
via_dxs_disabled = 0;
if (via_dxs_disabled) {
via_dxs_chnum = 0;
via_sgd_chnum = 1;
} else {
if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "via_dxs_channels",
&via_dxs_chnum) != 0)
via_dxs_chnum = NDXSCHANS;
if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "via_sgd_channels",
&via_sgd_chnum) != 0)
via_sgd_chnum = NMSGDCHANS;
}
if (via_dxs_chnum > NDXSCHANS)
via_dxs_chnum = NDXSCHANS;
else if (via_dxs_chnum < 0)
via_dxs_chnum = 0;
if (via_sgd_chnum > NMSGDCHANS)
via_sgd_chnum = NMSGDCHANS;
else if (via_sgd_chnum < 0)
via_sgd_chnum = 0;
if (via_dxs_chnum + via_sgd_chnum < 1) {
/* Minimalist ? */
via_dxs_chnum = 1;
via_sgd_chnum = 0;
}
if (via_dxs_chnum > 0 && resource_int_value(device_get_name(dev),
device_get_unit(dev), "via_dxs_src", &via_dxs_src) == 0)
via->dxs_src = (via_dxs_src > 0) ? 1 : 0;
else
via->dxs_src = 0;
nsegs = (via_dxs_chnum + via_sgd_chnum + NWRCHANS) * VIA_SEGS_MAX;
/* DMA tag for buffers */
if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
/*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff,
/*flags*/0, /*lockfunc*/NULL,
/*lockarg*/NULL, &via->parent_dmat) != 0) {
device_printf(dev, "unable to create dma tag\n");
goto bad;
}
/*
* DMA tag for SGD table. The 686 uses scatter/gather DMA and
* requires a list in memory of work to do. We need only 16 bytes
* for this list, and it is wasteful to allocate 16K.
*/
if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
/*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/nsegs * sizeof(struct via_dma_op),
/*nsegments*/1, /*maxsegz*/0x3ffff,
/*flags*/0, /*lockfunc*/NULL,
/*lockarg*/NULL, &via->sgd_dmat) != 0) {
device_printf(dev, "unable to create dma tag\n");
goto bad;
}
if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table,
BUS_DMA_NOWAIT, &via->sgd_dmamap) == -1)
goto bad;
if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table,
nsegs * sizeof(struct via_dma_op), dma_cb, via, 0))
goto bad;
if (via_chip_init(dev))
goto bad;
via->codec = AC97_CREATE(dev, via, via_ac97);
if (!via->codec)
goto bad;
mixer_init(dev, ac97_getmixerclass(), via->codec);
via->codec_caps = ac97_getextcaps(via->codec);
/* Try to set VRA without generating an error, VRM not reqrd yet */
if (via->codec_caps &
(AC97_EXTCAP_VRA | AC97_EXTCAP_VRM | AC97_EXTCAP_DRA)) {
uint16_t ext = ac97_getextmode(via->codec);
ext |= (via->codec_caps &
(AC97_EXTCAP_VRA | AC97_EXTCAP_VRM));
ext &= ~AC97_EXTCAP_DRA;
ac97_setextmode(via->codec, ext);
}
snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld %s",
rman_get_start(via->reg), rman_get_start(via->irq),
PCM_KLDSTRING(snd_via8233));
/* Register */
if (pcm_register(dev, via, via_dxs_chnum + via_sgd_chnum, NWRCHANS))
goto bad;
for (i = 0; i < via_dxs_chnum; i++)
pcm_addchan(dev, PCMDIR_PLAY, &via8233dxs_class, via);
for (i = 0; i < via_sgd_chnum; i++)
pcm_addchan(dev, PCMDIR_PLAY, &via8233msgd_class, via);
for (i = 0; i < NWRCHANS; i++)
pcm_addchan(dev, PCMDIR_REC, &via8233wr_class, via);
if (via_dxs_chnum > 0)
via_init_sysctls(dev);
device_printf(dev, "<VIA DXS %sabled: DXS%s %d / SGD %d / REC %d>\n",
(via_dxs_chnum > 0) ? "En" : "Dis", (via->dxs_src) ? "(SRC)" : "",
via_dxs_chnum, via_sgd_chnum, NWRCHANS);
pcm_setstatus(dev, status);
return (0);
bad:
if (via->codec)
ac97_destroy(via->codec);
if (via->reg)
bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg);
if (via->ih)
bus_teardown_intr(dev, via->irq, via->ih);
if (via->irq)
bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq);
if (via->parent_dmat)
bus_dma_tag_destroy(via->parent_dmat);
if (via->sgd_dmamap)
bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap);
if (via->sgd_table)
bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap);
if (via->sgd_dmat)
bus_dma_tag_destroy(via->sgd_dmat);
if (via->lock)
snd_mtxfree(via->lock);
if (via)
free(via, M_DEVBUF);
return (ENXIO);
}
static int
via_detach(device_t dev)
{
int r;
struct via_info *via;
r = pcm_unregister(dev);
if (r)
return (r);
via = pcm_getdevinfo(dev);
if (via != NULL && (via->play_num != 0 || via->rec_num != 0)) {
snd_mtxlock(via->lock);
via->polling = 0;
callout_stop(&via->poll_timer);
snd_mtxunlock(via->lock);
callout_drain(&via->poll_timer);
}
bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg);
bus_teardown_intr(dev, via->irq, via->ih);
bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq);
bus_dma_tag_destroy(via->parent_dmat);
bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap);
bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap);
bus_dma_tag_destroy(via->sgd_dmat);
snd_mtxfree(via->lock);
free(via, M_DEVBUF);
return (0);
}
static device_method_t via_methods[] = {
DEVMETHOD(device_probe, via_probe),
DEVMETHOD(device_attach, via_attach),
DEVMETHOD(device_detach, via_detach),
{ 0, 0}
};
static driver_t via_driver = {
"pcm",
via_methods,
PCM_SOFTC_SIZE,
};
DRIVER_MODULE(snd_via8233, pci, via_driver, pcm_devclass, 0, 0);
MODULE_DEPEND(snd_via8233, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
MODULE_VERSION(snd_via8233, 1);
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