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freebsd-skq/sys/dev/sound/pci/ich.c
Pedro F. Giffuni 718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2000 Katsurajima Naoto <raven@katsurajima.seya.yokohama.jp>
* Copyright (c) 2001 Cameron Grant <cg@freebsd.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, WHETHERIN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef HAVE_KERNEL_OPTION_HEADERS
#include "opt_snd.h"
#endif
#include <dev/sound/pcm/sound.h>
#include <dev/sound/pcm/ac97.h>
#include <dev/sound/pci/ich.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
SND_DECLARE_FILE("$FreeBSD$");
/* -------------------------------------------------------------------- */
#define ICH_TIMEOUT 1000 /* semaphore timeout polling count */
#define ICH_DTBL_LENGTH 32
#define ICH_DEFAULT_BUFSZ 16384
#define ICH_MAX_BUFSZ 65536
#define ICH_MIN_BUFSZ 4096
#define ICH_DEFAULT_BLKCNT 2
#define ICH_MAX_BLKCNT 32
#define ICH_MIN_BLKCNT 2
#define ICH_MIN_BLKSZ 64
#define INTEL_VENDORID 0x8086
#define SIS_VENDORID 0x1039
#define NVIDIA_VENDORID 0x10de
#define AMD_VENDORID 0x1022
#define INTEL_82440MX 0x7195
#define INTEL_82801AA 0x2415
#define INTEL_82801AB 0x2425
#define INTEL_82801BA 0x2445
#define INTEL_82801CA 0x2485
#define INTEL_82801DB 0x24c5 /* ICH4 needs special handling */
#define INTEL_82801EB 0x24d5 /* ICH5 needs to be treated as ICH4 */
#define INTEL_6300ESB 0x25a6 /* 6300ESB needs to be treated as ICH4 */
#define INTEL_82801FB 0x266e /* ICH6 needs to be treated as ICH4 */
#define INTEL_82801GB 0x27de /* ICH7 needs to be treated as ICH4 */
#define SIS_7012 0x7012 /* SiS 7012 needs special handling */
#define NVIDIA_NFORCE 0x01b1
#define NVIDIA_NFORCE2 0x006a
#define NVIDIA_NFORCE2_400 0x008a
#define NVIDIA_NFORCE3 0x00da
#define NVIDIA_NFORCE3_250 0x00ea
#define NVIDIA_NFORCE4 0x0059
#define NVIDIA_NFORCE_410_MCP 0x026b
#define NVIDIA_NFORCE4_MCP 0x003a
#define AMD_768 0x7445
#define AMD_8111 0x746d
#define ICH_LOCK(sc) snd_mtxlock((sc)->ich_lock)
#define ICH_UNLOCK(sc) snd_mtxunlock((sc)->ich_lock)
#define ICH_LOCK_ASSERT(sc) snd_mtxassert((sc)->ich_lock)
#if 0
#define ICH_DEBUG(stmt) do { \
stmt \
} while (0)
#else
#define ICH_DEBUG(...)
#endif
#define ICH_CALIBRATE_DONE (1 << 0)
#define ICH_IGNORE_PCR (1 << 1)
#define ICH_IGNORE_RESET (1 << 2)
#define ICH_FIXED_RATE (1 << 3)
#define ICH_DMA_NOCACHE (1 << 4)
#define ICH_HIGH_LATENCY (1 << 5)
static const struct ich_type {
uint16_t vendor;
uint16_t devid;
uint32_t options;
#define PROBE_LOW 0x01
char *name;
} ich_devs[] = {
{ INTEL_VENDORID, INTEL_82440MX, 0,
"Intel 440MX" },
{ INTEL_VENDORID, INTEL_82801AA, 0,
"Intel ICH (82801AA)" },
{ INTEL_VENDORID, INTEL_82801AB, 0,
"Intel ICH (82801AB)" },
{ INTEL_VENDORID, INTEL_82801BA, 0,
"Intel ICH2 (82801BA)" },
{ INTEL_VENDORID, INTEL_82801CA, 0,
"Intel ICH3 (82801CA)" },
{ INTEL_VENDORID, INTEL_82801DB, PROBE_LOW,
"Intel ICH4 (82801DB)" },
{ INTEL_VENDORID, INTEL_82801EB, PROBE_LOW,
"Intel ICH5 (82801EB)" },
{ INTEL_VENDORID, INTEL_6300ESB, PROBE_LOW,
"Intel 6300ESB" },
{ INTEL_VENDORID, INTEL_82801FB, PROBE_LOW,
"Intel ICH6 (82801FB)" },
{ INTEL_VENDORID, INTEL_82801GB, PROBE_LOW,
"Intel ICH7 (82801GB)" },
{ SIS_VENDORID, SIS_7012, 0,
"SiS 7012" },
{ NVIDIA_VENDORID, NVIDIA_NFORCE, 0,
"nVidia nForce" },
{ NVIDIA_VENDORID, NVIDIA_NFORCE2, 0,
"nVidia nForce2" },
{ NVIDIA_VENDORID, NVIDIA_NFORCE2_400, 0,
"nVidia nForce2 400" },
{ NVIDIA_VENDORID, NVIDIA_NFORCE3, 0,
"nVidia nForce3" },
{ NVIDIA_VENDORID, NVIDIA_NFORCE3_250, 0,
"nVidia nForce3 250" },
{ NVIDIA_VENDORID, NVIDIA_NFORCE4, 0,
"nVidia nForce4" },
{ NVIDIA_VENDORID, NVIDIA_NFORCE_410_MCP, 0,
"nVidia nForce 410 MCP" },
{ NVIDIA_VENDORID, NVIDIA_NFORCE4_MCP, 0,
"nVidia nForce 4 MCP" },
{ AMD_VENDORID, AMD_768, 0,
"AMD-768" },
{ AMD_VENDORID, AMD_8111, 0,
"AMD-8111" }
};
/* buffer descriptor */
struct ich_desc {
volatile uint32_t buffer;
volatile uint32_t length;
};
struct sc_info;
/* channel registers */
struct sc_chinfo {
uint32_t num:8, run:1, run_save:1;
uint32_t blksz, blkcnt, spd;
uint32_t regbase, spdreg;
uint32_t imask;
uint32_t civ;
struct snd_dbuf *buffer;
struct pcm_channel *channel;
struct sc_info *parent;
struct ich_desc *dtbl;
bus_addr_t desc_addr;
};
/* device private data */
struct sc_info {
device_t dev;
int hasvra, hasvrm, hasmic;
unsigned int chnum, bufsz, blkcnt;
int sample_size, swap_reg;
struct resource *nambar, *nabmbar, *irq;
int regtype, nambarid, nabmbarid, irqid;
bus_space_tag_t nambart, nabmbart;
bus_space_handle_t nambarh, nabmbarh;
bus_dma_tag_t dmat, chan_dmat;
bus_dmamap_t dtmap;
void *ih;
struct ac97_info *codec;
struct sc_chinfo ch[3];
int ac97rate;
struct ich_desc *dtbl;
unsigned int dtbl_size;
bus_addr_t desc_addr;
struct intr_config_hook intrhook;
uint16_t vendor;
uint16_t devid;
uint32_t flags;
struct mtx *ich_lock;
};
/* -------------------------------------------------------------------- */
static uint32_t ich_fmt[] = {
SND_FORMAT(AFMT_S16_LE, 2, 0),
0
};
static struct pcmchan_caps ich_vrcaps = {8000, 48000, ich_fmt, 0};
static struct pcmchan_caps ich_caps = {48000, 48000, ich_fmt, 0};
/* -------------------------------------------------------------------- */
/* Hardware */
static __inline uint32_t
ich_rd(struct sc_info *sc, int regno, int size)
{
switch (size) {
case 1:
return (bus_space_read_1(sc->nabmbart, sc->nabmbarh, regno));
case 2:
return (bus_space_read_2(sc->nabmbart, sc->nabmbarh, regno));
case 4:
return (bus_space_read_4(sc->nabmbart, sc->nabmbarh, regno));
default:
return (0xffffffff);
}
}
static __inline void
ich_wr(struct sc_info *sc, int regno, uint32_t data, int size)
{
switch (size) {
case 1:
bus_space_write_1(sc->nabmbart, sc->nabmbarh, regno, data);
break;
case 2:
bus_space_write_2(sc->nabmbart, sc->nabmbarh, regno, data);
break;
case 4:
bus_space_write_4(sc->nabmbart, sc->nabmbarh, regno, data);
break;
}
}
/* ac97 codec */
static int
ich_waitcd(void *devinfo)
{
struct sc_info *sc = (struct sc_info *)devinfo;
uint32_t data;
int i;
for (i = 0; i < ICH_TIMEOUT; i++) {
data = ich_rd(sc, ICH_REG_ACC_SEMA, 1);
if ((data & 0x01) == 0)
return (0);
DELAY(1);
}
if ((sc->flags & ICH_IGNORE_PCR) != 0)
return (0);
device_printf(sc->dev, "CODEC semaphore timeout\n");
return (ETIMEDOUT);
}
static int
ich_rdcd(kobj_t obj, void *devinfo, int regno)
{
struct sc_info *sc = (struct sc_info *)devinfo;
regno &= 0xff;
ich_waitcd(sc);
return (bus_space_read_2(sc->nambart, sc->nambarh, regno));
}
static int
ich_wrcd(kobj_t obj, void *devinfo, int regno, uint32_t data)
{
struct sc_info *sc = (struct sc_info *)devinfo;
regno &= 0xff;
ich_waitcd(sc);
bus_space_write_2(sc->nambart, sc->nambarh, regno, data);
return (0);
}
static kobj_method_t ich_ac97_methods[] = {
KOBJMETHOD(ac97_read, ich_rdcd),
KOBJMETHOD(ac97_write, ich_wrcd),
KOBJMETHOD_END
};
AC97_DECLARE(ich_ac97);
/* -------------------------------------------------------------------- */
/* common routines */
static void
ich_filldtbl(struct sc_chinfo *ch)
{
struct sc_info *sc = ch->parent;
uint32_t base;
int i;
base = sndbuf_getbufaddr(ch->buffer);
if ((ch->blksz * ch->blkcnt) > sndbuf_getmaxsize(ch->buffer))
ch->blksz = sndbuf_getmaxsize(ch->buffer) / ch->blkcnt;
if ((sndbuf_getblksz(ch->buffer) != ch->blksz ||
sndbuf_getblkcnt(ch->buffer) != ch->blkcnt) &&
sndbuf_resize(ch->buffer, ch->blkcnt, ch->blksz) != 0)
device_printf(sc->dev, "%s: failed blksz=%u blkcnt=%u\n",
__func__, ch->blksz, ch->blkcnt);
ch->blksz = sndbuf_getblksz(ch->buffer);
for (i = 0; i < ICH_DTBL_LENGTH; i++) {
ch->dtbl[i].buffer = base + (ch->blksz * (i % ch->blkcnt));
ch->dtbl[i].length = ICH_BDC_IOC
| (ch->blksz / ch->parent->sample_size);
}
}
static int
ich_resetchan(struct sc_info *sc, int num)
{
int i, cr, regbase;
if (num == 0)
regbase = ICH_REG_PO_BASE;
else if (num == 1)
regbase = ICH_REG_PI_BASE;
else if (num == 2)
regbase = ICH_REG_MC_BASE;
else
return (ENXIO);
ich_wr(sc, regbase + ICH_REG_X_CR, 0, 1);
#if 1
/* This may result in no sound output on NForce 2 MBs, see PR 73987 */
DELAY(100);
#else
(void)ich_rd(sc, regbase + ICH_REG_X_CR, 1);
#endif
ich_wr(sc, regbase + ICH_REG_X_CR, ICH_X_CR_RR, 1);
for (i = 0; i < ICH_TIMEOUT; i++) {
cr = ich_rd(sc, regbase + ICH_REG_X_CR, 1);
if (cr == 0)
return (0);
DELAY(1);
}
if (sc->flags & ICH_IGNORE_RESET)
return (0);
#if 0
else if (sc->vendor == NVIDIA_VENDORID) {
sc->flags |= ICH_IGNORE_RESET;
device_printf(sc->dev, "ignoring reset failure!\n");
return (0);
}
#endif
device_printf(sc->dev, "cannot reset channel %d\n", num);
return (ENXIO);
}
/* -------------------------------------------------------------------- */
/* channel interface */
static void *
ichchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
{
struct sc_info *sc = devinfo;
struct sc_chinfo *ch;
unsigned int num;
ICH_LOCK(sc);
num = sc->chnum++;
ch = &sc->ch[num];
ch->num = num;
ch->buffer = b;
ch->channel = c;
ch->parent = sc;
ch->run = 0;
ch->dtbl = sc->dtbl + (ch->num * ICH_DTBL_LENGTH);
ch->desc_addr = sc->desc_addr +
(ch->num * ICH_DTBL_LENGTH * sizeof(struct ich_desc));
ch->blkcnt = sc->blkcnt;
ch->blksz = sc->bufsz / ch->blkcnt;
switch(ch->num) {
case 0: /* play */
KASSERT(dir == PCMDIR_PLAY, ("wrong direction"));
ch->regbase = ICH_REG_PO_BASE;
ch->spdreg = (sc->hasvra) ? AC97_REGEXT_FDACRATE : 0;
ch->imask = ICH_GLOB_STA_POINT;
break;
case 1: /* record */
KASSERT(dir == PCMDIR_REC, ("wrong direction"));
ch->regbase = ICH_REG_PI_BASE;
ch->spdreg = (sc->hasvra) ? AC97_REGEXT_LADCRATE : 0;
ch->imask = ICH_GLOB_STA_PIINT;
break;
case 2: /* mic */
KASSERT(dir == PCMDIR_REC, ("wrong direction"));
ch->regbase = ICH_REG_MC_BASE;
ch->spdreg = (sc->hasvrm) ? AC97_REGEXT_MADCRATE : 0;
ch->imask = ICH_GLOB_STA_MINT;
break;
default:
return (NULL);
}
if (sc->flags & ICH_FIXED_RATE)
ch->spdreg = 0;
ICH_UNLOCK(sc);
if (sndbuf_alloc(ch->buffer, sc->chan_dmat,
((sc->flags & ICH_DMA_NOCACHE) ? BUS_DMA_NOCACHE : 0),
sc->bufsz) != 0)
return (NULL);
ICH_LOCK(sc);
ich_wr(sc, ch->regbase + ICH_REG_X_BDBAR, (uint32_t)(ch->desc_addr), 4);
ICH_UNLOCK(sc);
return (ch);
}
static int
ichchan_setformat(kobj_t obj, void *data, uint32_t format)
{
ICH_DEBUG(
struct sc_chinfo *ch = data;
struct sc_info *sc = ch->parent;
if (!(sc->flags & ICH_CALIBRATE_DONE))
device_printf(sc->dev,
"WARNING: %s() called before calibration!\n",
__func__);
);
return (0);
}
static uint32_t
ichchan_setspeed(kobj_t obj, void *data, uint32_t speed)
{
struct sc_chinfo *ch = data;
struct sc_info *sc = ch->parent;
ICH_DEBUG(
if (!(sc->flags & ICH_CALIBRATE_DONE))
device_printf(sc->dev,
"WARNING: %s() called before calibration!\n",
__func__);
);
if (ch->spdreg) {
int r, ac97rate;
ICH_LOCK(sc);
if (sc->ac97rate <= 32000 || sc->ac97rate >= 64000)
sc->ac97rate = 48000;
ac97rate = sc->ac97rate;
ICH_UNLOCK(sc);
r = (speed * 48000) / ac97rate;
/*
* Cast the return value of ac97_setrate() to uint64 so that
* the math don't overflow into the negative range.
*/
ch->spd = ((uint64_t)ac97_setrate(sc->codec, ch->spdreg, r) *
ac97rate) / 48000;
} else {
ch->spd = 48000;
}
return (ch->spd);
}
static uint32_t
ichchan_setblocksize(kobj_t obj, void *data, uint32_t blocksize)
{
struct sc_chinfo *ch = data;
struct sc_info *sc = ch->parent;
ICH_DEBUG(
if (!(sc->flags & ICH_CALIBRATE_DONE))
device_printf(sc->dev,
"WARNING: %s() called before calibration!\n",
__func__);
);
if (sc->flags & ICH_HIGH_LATENCY)
blocksize = sndbuf_getmaxsize(ch->buffer) / ch->blkcnt;
if (blocksize < ICH_MIN_BLKSZ)
blocksize = ICH_MIN_BLKSZ;
blocksize &= ~(ICH_MIN_BLKSZ - 1);
ch->blksz = blocksize;
ich_filldtbl(ch);
ICH_LOCK(sc);
ich_wr(sc, ch->regbase + ICH_REG_X_LVI, ch->blkcnt - 1, 1);
ICH_UNLOCK(sc);
return (ch->blksz);
}
static int
ichchan_trigger(kobj_t obj, void *data, int go)
{
struct sc_chinfo *ch = data;
struct sc_info *sc = ch->parent;
ICH_DEBUG(
if (!(sc->flags & ICH_CALIBRATE_DONE))
device_printf(sc->dev,
"WARNING: %s() called before calibration!\n",
__func__);
);
switch (go) {
case PCMTRIG_START:
ch->run = 1;
ICH_LOCK(sc);
ich_wr(sc, ch->regbase + ICH_REG_X_BDBAR, (uint32_t)(ch->desc_addr), 4);
ich_wr(sc, ch->regbase + ICH_REG_X_CR, ICH_X_CR_RPBM | ICH_X_CR_LVBIE | ICH_X_CR_IOCE, 1);
ICH_UNLOCK(sc);
break;
case PCMTRIG_STOP:
case PCMTRIG_ABORT:
ICH_LOCK(sc);
ich_resetchan(sc, ch->num);
ICH_UNLOCK(sc);
ch->run = 0;
break;
default:
break;
}
return (0);
}
static uint32_t
ichchan_getptr(kobj_t obj, void *data)
{
struct sc_chinfo *ch = data;
struct sc_info *sc = ch->parent;
uint32_t pos;
ICH_DEBUG(
if (!(sc->flags & ICH_CALIBRATE_DONE))
device_printf(sc->dev,
"WARNING: %s() called before calibration!\n",
__func__);
);
ICH_LOCK(sc);
ch->civ = ich_rd(sc, ch->regbase + ICH_REG_X_CIV, 1) % ch->blkcnt;
ICH_UNLOCK(sc);
pos = ch->civ * ch->blksz;
return (pos);
}
static struct pcmchan_caps *
ichchan_getcaps(kobj_t obj, void *data)
{
struct sc_chinfo *ch = data;
ICH_DEBUG(
struct sc_info *sc = ch->parent;
if (!(sc->flags & ICH_CALIBRATE_DONE))
device_printf(ch->parent->dev,
"WARNING: %s() called before calibration!\n",
__func__);
);
return ((ch->spdreg) ? &ich_vrcaps : &ich_caps);
}
static kobj_method_t ichchan_methods[] = {
KOBJMETHOD(channel_init, ichchan_init),
KOBJMETHOD(channel_setformat, ichchan_setformat),
KOBJMETHOD(channel_setspeed, ichchan_setspeed),
KOBJMETHOD(channel_setblocksize, ichchan_setblocksize),
KOBJMETHOD(channel_trigger, ichchan_trigger),
KOBJMETHOD(channel_getptr, ichchan_getptr),
KOBJMETHOD(channel_getcaps, ichchan_getcaps),
KOBJMETHOD_END
};
CHANNEL_DECLARE(ichchan);
/* -------------------------------------------------------------------- */
/* The interrupt handler */
static void
ich_intr(void *p)
{
struct sc_info *sc = (struct sc_info *)p;
struct sc_chinfo *ch;
uint32_t cbi, lbi, lvi, st, gs;
int i;
ICH_LOCK(sc);
ICH_DEBUG(
if (!(sc->flags & ICH_CALIBRATE_DONE))
device_printf(sc->dev,
"WARNING: %s() called before calibration!\n",
__func__);
);
gs = ich_rd(sc, ICH_REG_GLOB_STA, 4) & ICH_GLOB_STA_IMASK;
if (gs & (ICH_GLOB_STA_PRES | ICH_GLOB_STA_SRES)) {
/* Clear resume interrupt(s) - nothing doing with them */
ich_wr(sc, ICH_REG_GLOB_STA, gs, 4);
}
gs &= ~(ICH_GLOB_STA_PRES | ICH_GLOB_STA_SRES);
for (i = 0; i < 3; i++) {
ch = &sc->ch[i];
if ((ch->imask & gs) == 0)
continue;
gs &= ~ch->imask;
st = ich_rd(sc, ch->regbase +
((sc->swap_reg) ? ICH_REG_X_PICB : ICH_REG_X_SR),
2);
st &= ICH_X_SR_FIFOE | ICH_X_SR_BCIS | ICH_X_SR_LVBCI;
if (st & (ICH_X_SR_BCIS | ICH_X_SR_LVBCI)) {
/* block complete - update buffer */
if (ch->run) {
ICH_UNLOCK(sc);
chn_intr(ch->channel);
ICH_LOCK(sc);
}
lvi = ich_rd(sc, ch->regbase + ICH_REG_X_LVI, 1);
cbi = ch->civ % ch->blkcnt;
if (cbi == 0)
cbi = ch->blkcnt - 1;
else
cbi--;
lbi = lvi % ch->blkcnt;
if (cbi >= lbi)
lvi += cbi - lbi;
else
lvi += cbi + ch->blkcnt - lbi;
lvi %= ICH_DTBL_LENGTH;
ich_wr(sc, ch->regbase + ICH_REG_X_LVI, lvi, 1);
}
/* clear status bit */
ich_wr(sc, ch->regbase +
((sc->swap_reg) ? ICH_REG_X_PICB : ICH_REG_X_SR),
st, 2);
}
ICH_UNLOCK(sc);
if (gs != 0) {
device_printf(sc->dev,
"Unhandled interrupt, gs_intr = %x\n", gs);
}
}
/* ------------------------------------------------------------------------- */
/* Sysctl to control ac97 speed (some boards appear to end up using
* XTAL_IN rather than BIT_CLK for link timing).
*/
static int
ich_initsys(struct sc_info* sc)
{
/* XXX: this should move 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_INT(device_get_sysctl_ctx(sc->dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
OID_AUTO, "ac97rate", CTLFLAG_RW,
&sc->ac97rate, 48000,
"AC97 link rate (default = 48000)");
return (0);
}
static void
ich_setstatus(struct sc_info *sc)
{
char status[SND_STATUSLEN];
snprintf(status, SND_STATUSLEN,
"at io 0x%jx, 0x%jx irq %jd bufsz %u %s",
rman_get_start(sc->nambar), rman_get_start(sc->nabmbar),
rman_get_start(sc->irq), sc->bufsz,PCM_KLDSTRING(snd_ich));
if (bootverbose && (sc->flags & ICH_DMA_NOCACHE))
device_printf(sc->dev,
"PCI Master abort workaround enabled\n");
pcm_setstatus(sc->dev, status);
}
/* -------------------------------------------------------------------- */
/* Calibrate card to determine the clock source. The source maybe a
* function of the ac97 codec initialization code (to be investigated).
*/
static void
ich_calibrate(void *arg)
{
struct sc_info *sc;
struct sc_chinfo *ch;
struct timeval t1, t2;
uint8_t ociv, nciv;
uint32_t wait_us, actual_48k_rate, oblkcnt;
sc = (struct sc_info *)arg;
ICH_LOCK(sc);
ch = &sc->ch[1];
if (sc->intrhook.ich_func != NULL) {
config_intrhook_disestablish(&sc->intrhook);
sc->intrhook.ich_func = NULL;
}
/*
* Grab audio from input for fixed interval and compare how
* much we actually get with what we expect. Interval needs
* to be sufficiently short that no interrupts are
* generated.
*/
KASSERT(ch->regbase == ICH_REG_PI_BASE, ("wrong direction"));
oblkcnt = ch->blkcnt;
ch->blkcnt = 2;
sc->flags |= ICH_CALIBRATE_DONE;
ICH_UNLOCK(sc);
ichchan_setblocksize(0, ch, sndbuf_getmaxsize(ch->buffer) >> 1);
ICH_LOCK(sc);
sc->flags &= ~ICH_CALIBRATE_DONE;
/*
* our data format is stereo, 16 bit so each sample is 4 bytes.
* assuming we get 48000 samples per second, we get 192000 bytes/sec.
* we're going to start recording with interrupts disabled and measure
* the time taken for one block to complete. we know the block size,
* we know the time in microseconds, we calculate the sample rate:
*
* actual_rate [bps] = bytes / (time [s] * 4)
* actual_rate [bps] = (bytes * 1000000) / (time [us] * 4)
* actual_rate [Hz] = (bytes * 250000) / time [us]
*/
/* prepare */
ociv = ich_rd(sc, ch->regbase + ICH_REG_X_CIV, 1);
nciv = ociv;
ich_wr(sc, ch->regbase + ICH_REG_X_BDBAR, (uint32_t)(ch->desc_addr), 4);
/* start */
microtime(&t1);
ich_wr(sc, ch->regbase + ICH_REG_X_CR, ICH_X_CR_RPBM, 1);
/* wait */
do {
microtime(&t2);
if (t2.tv_sec - t1.tv_sec > 1)
break;
nciv = ich_rd(sc, ch->regbase + ICH_REG_X_CIV, 1);
} while (nciv == ociv);
/* stop */
ich_wr(sc, ch->regbase + ICH_REG_X_CR, 0, 1);
/* reset */
DELAY(100);
ich_wr(sc, ch->regbase + ICH_REG_X_CR, ICH_X_CR_RR, 1);
ch->blkcnt = oblkcnt;
/* turn time delta into us */
wait_us = ((t2.tv_sec - t1.tv_sec) * 1000000) + t2.tv_usec - t1.tv_usec;
if (nciv == ociv) {
device_printf(sc->dev, "ac97 link rate calibration timed out after %d us\n", wait_us);
sc->flags |= ICH_CALIBRATE_DONE;
ICH_UNLOCK(sc);
ich_setstatus(sc);
return;
}
/* Just in case the timecounter screwed. It is possible, really. */
if (wait_us > 0)
actual_48k_rate = ((uint64_t)ch->blksz * 250000) / wait_us;
else
actual_48k_rate = 48000;
if (actual_48k_rate < 47500 || actual_48k_rate > 48500) {
sc->ac97rate = actual_48k_rate;
} else {
sc->ac97rate = 48000;
}
if (bootverbose || sc->ac97rate != 48000) {
device_printf(sc->dev, "measured ac97 link rate at %d Hz", actual_48k_rate);
if (sc->ac97rate != actual_48k_rate)
printf(", will use %d Hz", sc->ac97rate);
printf("\n");
}
sc->flags |= ICH_CALIBRATE_DONE;
ICH_UNLOCK(sc);
ich_setstatus(sc);
return;
}
/* -------------------------------------------------------------------- */
/* Probe and attach the card */
static void
ich_setmap(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
struct sc_info *sc = (struct sc_info *)arg;
sc->desc_addr = segs->ds_addr;
return;
}
static int
ich_init(struct sc_info *sc)
{
uint32_t stat;
ich_wr(sc, ICH_REG_GLOB_CNT, ICH_GLOB_CTL_COLD, 4);
DELAY(600000);
stat = ich_rd(sc, ICH_REG_GLOB_STA, 4);
if ((stat & ICH_GLOB_STA_PCR) == 0) {
/* ICH4/ICH5 may fail when busmastering is enabled. Continue */
if (sc->vendor == INTEL_VENDORID && (
sc->devid == INTEL_82801DB || sc->devid == INTEL_82801EB ||
sc->devid == INTEL_6300ESB || sc->devid == INTEL_82801FB ||
sc->devid == INTEL_82801GB)) {
sc->flags |= ICH_IGNORE_PCR;
device_printf(sc->dev, "primary codec not ready!\n");
}
}
#if 0
ich_wr(sc, ICH_REG_GLOB_CNT, ICH_GLOB_CTL_COLD | ICH_GLOB_CTL_PRES, 4);
#else
ich_wr(sc, ICH_REG_GLOB_CNT, ICH_GLOB_CTL_COLD, 4);
#endif
if (ich_resetchan(sc, 0) || ich_resetchan(sc, 1))
return (ENXIO);
if (sc->hasmic && ich_resetchan(sc, 2))
return (ENXIO);
return (0);
}
static int
ich_pci_probe(device_t dev)
{
int i;
uint16_t devid, vendor;
vendor = pci_get_vendor(dev);
devid = pci_get_device(dev);
for (i = 0; i < sizeof(ich_devs)/sizeof(ich_devs[0]); i++) {
if (vendor == ich_devs[i].vendor &&
devid == ich_devs[i].devid) {
device_set_desc(dev, ich_devs[i].name);
/* allow a better driver to override us */
if ((ich_devs[i].options & PROBE_LOW) != 0)
return (BUS_PROBE_LOW_PRIORITY);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
ich_pci_attach(device_t dev)
{
uint32_t subdev;
uint16_t extcaps;
uint16_t devid, vendor;
struct sc_info *sc;
int i;
sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
sc->ich_lock = snd_mtxcreate(device_get_nameunit(dev), "snd_ich softc");
sc->dev = dev;
vendor = sc->vendor = pci_get_vendor(dev);
devid = sc->devid = pci_get_device(dev);
subdev = (pci_get_subdevice(dev) << 16) | pci_get_subvendor(dev);
/*
* The SiS 7012 register set isn't quite like the standard ich.
* There really should be a general "quirks" mechanism.
*/
if (vendor == SIS_VENDORID && devid == SIS_7012) {
sc->swap_reg = 1;
sc->sample_size = 1;
} else {
sc->swap_reg = 0;
sc->sample_size = 2;
}
/*
* Intel 440MX Errata #36
* - AC97 Soft Audio and Soft Modem Master Abort Errata
*
* http://www.intel.com/design/chipsets/specupdt/245051.htm
*/
if (vendor == INTEL_VENDORID && devid == INTEL_82440MX)
sc->flags |= ICH_DMA_NOCACHE;
/*
* Enable bus master. On ich4/5 this may prevent the detection of
* the primary codec becoming ready in ich_init().
*/
pci_enable_busmaster(dev);
/*
* By default, ich4 has NAMBAR and NABMBAR i/o spaces as
* read-only. Need to enable "legacy support", by poking into
* pci config space. The driver should use MMBAR and MBBAR,
* but doing so will mess things up here. ich4 has enough new
* features it warrants it's own driver.
*/
if (vendor == INTEL_VENDORID && (devid == INTEL_82801DB ||
devid == INTEL_82801EB || devid == INTEL_6300ESB ||
devid == INTEL_82801FB || devid == INTEL_82801GB)) {
sc->nambarid = PCIR_MMBAR;
sc->nabmbarid = PCIR_MBBAR;
sc->regtype = SYS_RES_MEMORY;
pci_write_config(dev, PCIR_ICH_LEGACY, ICH_LEGACY_ENABLE, 1);
} else {
sc->nambarid = PCIR_NAMBAR;
sc->nabmbarid = PCIR_NABMBAR;
sc->regtype = SYS_RES_IOPORT;
}
sc->nambar = bus_alloc_resource_any(dev, sc->regtype,
&sc->nambarid, RF_ACTIVE);
sc->nabmbar = bus_alloc_resource_any(dev, sc->regtype,
&sc->nabmbarid, RF_ACTIVE);
if (!sc->nambar || !sc->nabmbar) {
device_printf(dev, "unable to map IO port space\n");
goto bad;
}
sc->nambart = rman_get_bustag(sc->nambar);
sc->nambarh = rman_get_bushandle(sc->nambar);
sc->nabmbart = rman_get_bustag(sc->nabmbar);
sc->nabmbarh = rman_get_bushandle(sc->nabmbar);
sc->bufsz = pcm_getbuffersize(dev,
ICH_MIN_BUFSZ, ICH_DEFAULT_BUFSZ, ICH_MAX_BUFSZ);
if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "blocksize", &i) == 0 && i > 0) {
sc->blkcnt = sc->bufsz / i;
i = 0;
while (sc->blkcnt >> i)
i++;
sc->blkcnt = 1 << (i - 1);
if (sc->blkcnt < ICH_MIN_BLKCNT)
sc->blkcnt = ICH_MIN_BLKCNT;
else if (sc->blkcnt > ICH_MAX_BLKCNT)
sc->blkcnt = ICH_MAX_BLKCNT;
} else
sc->blkcnt = ICH_DEFAULT_BLKCNT;
if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "highlatency", &i) == 0 && i != 0) {
sc->flags |= ICH_HIGH_LATENCY;
sc->blkcnt = ICH_MIN_BLKCNT;
}
if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "fixedrate", &i) == 0 && i != 0)
sc->flags |= ICH_FIXED_RATE;
if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "micchannel_enabled", &i) == 0 && i != 0)
sc->hasmic = 1;
sc->irqid = 0;
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqid,
RF_ACTIVE | RF_SHAREABLE);
if (!sc->irq || snd_setup_intr(dev, sc->irq, INTR_MPSAFE, ich_intr,
sc, &sc->ih)) {
device_printf(dev, "unable to map interrupt\n");
goto bad;
}
if (ich_init(sc)) {
device_printf(dev, "unable to initialize the card\n");
goto bad;
}
sc->codec = AC97_CREATE(dev, sc, ich_ac97);
if (sc->codec == NULL)
goto bad;
/*
* Turn on inverted external amplifier sense flags for few
* 'special' boards.
*/
switch (subdev) {
case 0x202f161f: /* Gateway 7326GZ */
case 0x203a161f: /* Gateway 4028GZ */
case 0x203e161f: /* Gateway 3520GZ/M210 */
case 0x204c161f: /* Kvazar-Micro Senator 3592XT */
case 0x8144104d: /* Sony VAIO PCG-TR* */
case 0x8197104d: /* Sony S1XP */
case 0x81c0104d: /* Sony VAIO type T */
case 0x81c5104d: /* Sony VAIO VGN B1VP/B1XP */
case 0x3089103c: /* Compaq Presario B3800 */
case 0x309a103c: /* HP Compaq nx4300 */
case 0x82131033: /* NEC VersaPro VJ10F/BH */
case 0x82be1033: /* NEC VersaPro VJ12F/CH */
ac97_setflags(sc->codec, ac97_getflags(sc->codec) | AC97_F_EAPD_INV);
break;
default:
break;
}
mixer_init(dev, ac97_getmixerclass(), sc->codec);
/* check and set VRA function */
extcaps = ac97_getextcaps(sc->codec);
sc->hasvra = extcaps & AC97_EXTCAP_VRA;
sc->hasvrm = extcaps & AC97_EXTCAP_VRM;
sc->hasmic = (sc->hasmic != 0 &&
(ac97_getcaps(sc->codec) & AC97_CAP_MICCHANNEL)) ? 1 : 0;
ac97_setextmode(sc->codec, sc->hasvra | sc->hasvrm);
sc->dtbl_size = sizeof(struct ich_desc) * ICH_DTBL_LENGTH *
((sc->hasmic) ? 3 : 2);
/* BDL tag */
if (bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
sc->dtbl_size, 1, 0x3ffff, 0, NULL, NULL, &sc->dmat) != 0) {
device_printf(dev, "unable to create dma tag\n");
goto bad;
}
/* PCM channel tag */
if (bus_dma_tag_create(bus_get_dma_tag(dev), ICH_MIN_BLKSZ, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
sc->bufsz, 1, 0x3ffff, 0, NULL, NULL, &sc->chan_dmat) != 0) {
device_printf(dev, "unable to create dma tag\n");
goto bad;
}
if (bus_dmamem_alloc(sc->dmat, (void **)&sc->dtbl, BUS_DMA_NOWAIT |
((sc->flags & ICH_DMA_NOCACHE) ? BUS_DMA_NOCACHE : 0),
&sc->dtmap))
goto bad;
if (bus_dmamap_load(sc->dmat, sc->dtmap, sc->dtbl, sc->dtbl_size,
ich_setmap, sc, 0))
goto bad;
if (pcm_register(dev, sc, 1, (sc->hasmic) ? 2 : 1))
goto bad;
pcm_addchan(dev, PCMDIR_PLAY, &ichchan_class, sc); /* play */
pcm_addchan(dev, PCMDIR_REC, &ichchan_class, sc); /* record */
if (sc->hasmic)
pcm_addchan(dev, PCMDIR_REC, &ichchan_class, sc); /* record mic */
if (sc->flags & ICH_FIXED_RATE) {
sc->flags |= ICH_CALIBRATE_DONE;
ich_setstatus(sc);
} else {
ich_initsys(sc);
sc->intrhook.ich_func = ich_calibrate;
sc->intrhook.ich_arg = sc;
if (cold == 0 ||
config_intrhook_establish(&sc->intrhook) != 0) {
sc->intrhook.ich_func = NULL;
ich_calibrate(sc);
}
}
return (0);
bad:
if (sc->codec)
ac97_destroy(sc->codec);
if (sc->ih)
bus_teardown_intr(dev, sc->irq, sc->ih);
if (sc->irq)
bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq);
if (sc->nambar)
bus_release_resource(dev, sc->regtype,
sc->nambarid, sc->nambar);
if (sc->nabmbar)
bus_release_resource(dev, sc->regtype,
sc->nabmbarid, sc->nabmbar);
if (sc->dtmap)
bus_dmamap_unload(sc->dmat, sc->dtmap);
if (sc->dtbl)
bus_dmamem_free(sc->dmat, sc->dtbl, sc->dtmap);
if (sc->chan_dmat)
bus_dma_tag_destroy(sc->chan_dmat);
if (sc->dmat)
bus_dma_tag_destroy(sc->dmat);
if (sc->ich_lock)
snd_mtxfree(sc->ich_lock);
free(sc, M_DEVBUF);
return (ENXIO);
}
static int
ich_pci_detach(device_t dev)
{
struct sc_info *sc;
int r;
r = pcm_unregister(dev);
if (r)
return (r);
sc = pcm_getdevinfo(dev);
bus_teardown_intr(dev, sc->irq, sc->ih);
bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq);
bus_release_resource(dev, sc->regtype, sc->nambarid, sc->nambar);
bus_release_resource(dev, sc->regtype, sc->nabmbarid, sc->nabmbar);
bus_dmamap_unload(sc->dmat, sc->dtmap);
bus_dmamem_free(sc->dmat, sc->dtbl, sc->dtmap);
bus_dma_tag_destroy(sc->chan_dmat);
bus_dma_tag_destroy(sc->dmat);
snd_mtxfree(sc->ich_lock);
free(sc, M_DEVBUF);
return (0);
}
static void
ich_pci_codec_reset(struct sc_info *sc)
{
int i;
uint32_t control;
control = ich_rd(sc, ICH_REG_GLOB_CNT, 4);
control &= ~(ICH_GLOB_CTL_SHUT);
control |= (control & ICH_GLOB_CTL_COLD) ?
ICH_GLOB_CTL_WARM : ICH_GLOB_CTL_COLD;
ich_wr(sc, ICH_REG_GLOB_CNT, control, 4);
for (i = 500000; i; i--) {
if (ich_rd(sc, ICH_REG_GLOB_STA, 4) & ICH_GLOB_STA_PCR)
break; /* or ICH_SCR? */
DELAY(1);
}
if (i <= 0)
printf("%s: time out\n", __func__);
}
static int
ich_pci_suspend(device_t dev)
{
struct sc_info *sc;
int i;
sc = pcm_getdevinfo(dev);
ICH_LOCK(sc);
for (i = 0 ; i < 3; i++) {
sc->ch[i].run_save = sc->ch[i].run;
if (sc->ch[i].run) {
ICH_UNLOCK(sc);
ichchan_trigger(0, &sc->ch[i], PCMTRIG_ABORT);
ICH_LOCK(sc);
}
}
ICH_UNLOCK(sc);
return (0);
}
static int
ich_pci_resume(device_t dev)
{
struct sc_info *sc;
int i;
sc = pcm_getdevinfo(dev);
ICH_LOCK(sc);
/* Reinit audio device */
if (ich_init(sc) == -1) {
device_printf(dev, "unable to reinitialize the card\n");
ICH_UNLOCK(sc);
return (ENXIO);
}
/* Reinit mixer */
ich_pci_codec_reset(sc);
ICH_UNLOCK(sc);
ac97_setextmode(sc->codec, sc->hasvra | sc->hasvrm);
if (mixer_reinit(dev) == -1) {
device_printf(dev, "unable to reinitialize the mixer\n");
return (ENXIO);
}
/* Re-start DMA engines */
for (i = 0 ; i < 3; i++) {
struct sc_chinfo *ch = &sc->ch[i];
if (sc->ch[i].run_save) {
ichchan_setblocksize(0, ch, ch->blksz);
ichchan_setspeed(0, ch, ch->spd);
ichchan_trigger(0, ch, PCMTRIG_START);
}
}
return (0);
}
static device_method_t ich_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ich_pci_probe),
DEVMETHOD(device_attach, ich_pci_attach),
DEVMETHOD(device_detach, ich_pci_detach),
DEVMETHOD(device_suspend, ich_pci_suspend),
DEVMETHOD(device_resume, ich_pci_resume),
{ 0, 0 }
};
static driver_t ich_driver = {
"pcm",
ich_methods,
PCM_SOFTC_SIZE,
};
DRIVER_MODULE(snd_ich, pci, ich_driver, pcm_devclass, 0, 0);
MODULE_DEPEND(snd_ich, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
MODULE_VERSION(snd_ich, 1);
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