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linux/sound/pci/intel8x0m.c
Takashi Iwai 71b21f5f89 ALSA: intel8x0: Fix the missing snd_card_free() call at probe error 
The previous cleanup with devres may lead to the incorrect release
orders at the probe error handling due to the devres's nature.  Until
we register the card, snd_card_free() has to be called at first for
releasing the stuff properly when the driver tries to manage and
release the stuff via card->private_free().

This patch fixes it by calling snd_card_free() on the error from the
probe callback using a new helper function.

Fixes: 7835e0901e ("ALSA: intel8x0: Allocate resources with device-managed APIs")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220412102636.16000-19-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-04-12 17:58:29 +02:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ALSA modem driver for Intel ICH (i8x0) chipsets
*
* Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
*
* This is modified (by Sasha Khapyorsky <sashak@alsa-project.org>) version
* of ALSA ICH sound driver intel8x0.c .
*/
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/info.h>
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; "
"SiS 7013; NVidia MCP/2/2S/3 modems");
MODULE_LICENSE("GPL");
static int index = -2; /* Exclude the first card */
static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
static int ac97_clock;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for Intel i8x0 modemcard.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for Intel i8x0 modemcard.");
module_param(ac97_clock, int, 0444);
MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
/* just for backward compatibility */
static bool enable;
module_param(enable, bool, 0444);
/*
* Direct registers
*/
enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
#define ICHREG(x) ICH_REG_##x
#define DEFINE_REGSET(name,base) \
enum { \
ICH_REG_##name##_BDBAR = base + 0x0, /* dword - buffer descriptor list base address */ \
ICH_REG_##name##_CIV = base + 0x04, /* byte - current index value */ \
ICH_REG_##name##_LVI = base + 0x05, /* byte - last valid index */ \
ICH_REG_##name##_SR = base + 0x06, /* byte - status register */ \
ICH_REG_##name##_PICB = base + 0x08, /* word - position in current buffer */ \
ICH_REG_##name##_PIV = base + 0x0a, /* byte - prefetched index value */ \
ICH_REG_##name##_CR = base + 0x0b, /* byte - control register */ \
}
/* busmaster blocks */
DEFINE_REGSET(OFF, 0); /* offset */
/* values for each busmaster block */
/* LVI */
#define ICH_REG_LVI_MASK 0x1f
/* SR */
#define ICH_FIFOE 0x10 /* FIFO error */
#define ICH_BCIS 0x08 /* buffer completion interrupt status */
#define ICH_LVBCI 0x04 /* last valid buffer completion interrupt */
#define ICH_CELV 0x02 /* current equals last valid */
#define ICH_DCH 0x01 /* DMA controller halted */
/* PIV */
#define ICH_REG_PIV_MASK 0x1f /* mask */
/* CR */
#define ICH_IOCE 0x10 /* interrupt on completion enable */
#define ICH_FEIE 0x08 /* fifo error interrupt enable */
#define ICH_LVBIE 0x04 /* last valid buffer interrupt enable */
#define ICH_RESETREGS 0x02 /* reset busmaster registers */
#define ICH_STARTBM 0x01 /* start busmaster operation */
/* global block */
#define ICH_REG_GLOB_CNT 0x3c /* dword - global control */
#define ICH_TRIE 0x00000040 /* tertiary resume interrupt enable */
#define ICH_SRIE 0x00000020 /* secondary resume interrupt enable */
#define ICH_PRIE 0x00000010 /* primary resume interrupt enable */
#define ICH_ACLINK 0x00000008 /* AClink shut off */
#define ICH_AC97WARM 0x00000004 /* AC'97 warm reset */
#define ICH_AC97COLD 0x00000002 /* AC'97 cold reset */
#define ICH_GIE 0x00000001 /* GPI interrupt enable */
#define ICH_REG_GLOB_STA 0x40 /* dword - global status */
#define ICH_TRI 0x20000000 /* ICH4: tertiary (AC_SDIN2) resume interrupt */
#define ICH_TCR 0x10000000 /* ICH4: tertiary (AC_SDIN2) codec ready */
#define ICH_BCS 0x08000000 /* ICH4: bit clock stopped */
#define ICH_SPINT 0x04000000 /* ICH4: S/PDIF interrupt */
#define ICH_P2INT 0x02000000 /* ICH4: PCM2-In interrupt */
#define ICH_M2INT 0x01000000 /* ICH4: Mic2-In interrupt */
#define ICH_SAMPLE_CAP 0x00c00000 /* ICH4: sample capability bits (RO) */
#define ICH_MULTICHAN_CAP 0x00300000 /* ICH4: multi-channel capability bits (RO) */
#define ICH_MD3 0x00020000 /* modem power down semaphore */
#define ICH_AD3 0x00010000 /* audio power down semaphore */
#define ICH_RCS 0x00008000 /* read completion status */
#define ICH_BIT3 0x00004000 /* bit 3 slot 12 */
#define ICH_BIT2 0x00002000 /* bit 2 slot 12 */
#define ICH_BIT1 0x00001000 /* bit 1 slot 12 */
#define ICH_SRI 0x00000800 /* secondary (AC_SDIN1) resume interrupt */
#define ICH_PRI 0x00000400 /* primary (AC_SDIN0) resume interrupt */
#define ICH_SCR 0x00000200 /* secondary (AC_SDIN1) codec ready */
#define ICH_PCR 0x00000100 /* primary (AC_SDIN0) codec ready */
#define ICH_MCINT 0x00000080 /* MIC capture interrupt */
#define ICH_POINT 0x00000040 /* playback interrupt */
#define ICH_PIINT 0x00000020 /* capture interrupt */
#define ICH_NVSPINT 0x00000010 /* nforce spdif interrupt */
#define ICH_MOINT 0x00000004 /* modem playback interrupt */
#define ICH_MIINT 0x00000002 /* modem capture interrupt */
#define ICH_GSCI 0x00000001 /* GPI status change interrupt */
#define ICH_REG_ACC_SEMA 0x44 /* byte - codec write semaphore */
#define ICH_CAS 0x01 /* codec access semaphore */
#define ICH_MAX_FRAGS 32 /* max hw frags */
/*
*
*/
enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
#define get_ichdev(substream) (substream->runtime->private_data)
struct ichdev {
unsigned int ichd; /* ich device number */
unsigned long reg_offset; /* offset to bmaddr */
__le32 *bdbar; /* CPU address (32bit) */
unsigned int bdbar_addr; /* PCI bus address (32bit) */
struct snd_pcm_substream *substream;
unsigned int physbuf; /* physical address (32bit) */
unsigned int size;
unsigned int fragsize;
unsigned int fragsize1;
unsigned int position;
int frags;
int lvi;
int lvi_frag;
int civ;
int ack;
int ack_reload;
unsigned int ack_bit;
unsigned int roff_sr;
unsigned int roff_picb;
unsigned int int_sta_mask; /* interrupt status mask */
unsigned int ali_slot; /* ALI DMA slot */
struct snd_ac97 *ac97;
};
struct intel8x0m {
unsigned int device_type;
int irq;
void __iomem *addr;
void __iomem *bmaddr;
struct pci_dev *pci;
struct snd_card *card;
int pcm_devs;
struct snd_pcm *pcm[2];
struct ichdev ichd[2];
unsigned int in_ac97_init: 1;
struct snd_ac97_bus *ac97_bus;
struct snd_ac97 *ac97;
spinlock_t reg_lock;
struct snd_dma_buffer *bdbars;
u32 bdbars_count;
u32 int_sta_reg; /* interrupt status register */
u32 int_sta_mask; /* interrupt status mask */
unsigned int pcm_pos_shift;
};
static const struct pci_device_id snd_intel8x0m_ids[] = {
{ PCI_VDEVICE(INTEL, 0x2416), DEVICE_INTEL }, /* 82801AA */
{ PCI_VDEVICE(INTEL, 0x2426), DEVICE_INTEL }, /* 82901AB */
{ PCI_VDEVICE(INTEL, 0x2446), DEVICE_INTEL }, /* 82801BA */
{ PCI_VDEVICE(INTEL, 0x2486), DEVICE_INTEL }, /* ICH3 */
{ PCI_VDEVICE(INTEL, 0x24c6), DEVICE_INTEL }, /* ICH4 */
{ PCI_VDEVICE(INTEL, 0x24d6), DEVICE_INTEL }, /* ICH5 */
{ PCI_VDEVICE(INTEL, 0x266d), DEVICE_INTEL }, /* ICH6 */
{ PCI_VDEVICE(INTEL, 0x27dd), DEVICE_INTEL }, /* ICH7 */
{ PCI_VDEVICE(INTEL, 0x7196), DEVICE_INTEL }, /* 440MX */
{ PCI_VDEVICE(AMD, 0x7446), DEVICE_INTEL }, /* AMD768 */
{ PCI_VDEVICE(SI, 0x7013), DEVICE_SIS }, /* SI7013 */
{ PCI_VDEVICE(NVIDIA, 0x01c1), DEVICE_NFORCE }, /* NFORCE */
{ PCI_VDEVICE(NVIDIA, 0x0069), DEVICE_NFORCE }, /* NFORCE2 */
{ PCI_VDEVICE(NVIDIA, 0x0089), DEVICE_NFORCE }, /* NFORCE2s */
{ PCI_VDEVICE(NVIDIA, 0x00d9), DEVICE_NFORCE }, /* NFORCE3 */
{ PCI_VDEVICE(AMD, 0x746e), DEVICE_INTEL }, /* AMD8111 */
#if 0
{ PCI_VDEVICE(AL, 0x5455), DEVICE_ALI }, /* Ali5455 */
#endif
{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
/*
* Lowlevel I/O - busmaster
*/
static inline u8 igetbyte(struct intel8x0m *chip, u32 offset)
{
return ioread8(chip->bmaddr + offset);
}
static inline u16 igetword(struct intel8x0m *chip, u32 offset)
{
return ioread16(chip->bmaddr + offset);
}
static inline u32 igetdword(struct intel8x0m *chip, u32 offset)
{
return ioread32(chip->bmaddr + offset);
}
static inline void iputbyte(struct intel8x0m *chip, u32 offset, u8 val)
{
iowrite8(val, chip->bmaddr + offset);
}
static inline void iputword(struct intel8x0m *chip, u32 offset, u16 val)
{
iowrite16(val, chip->bmaddr + offset);
}
static inline void iputdword(struct intel8x0m *chip, u32 offset, u32 val)
{
iowrite32(val, chip->bmaddr + offset);
}
/*
* Lowlevel I/O - AC'97 registers
*/
static inline u16 iagetword(struct intel8x0m *chip, u32 offset)
{
return ioread16(chip->addr + offset);
}
static inline void iaputword(struct intel8x0m *chip, u32 offset, u16 val)
{
iowrite16(val, chip->addr + offset);
}
/*
* Basic I/O
*/
/*
* access to AC97 codec via normal i/o (for ICH and SIS7013)
*/
/* return the GLOB_STA bit for the corresponding codec */
static unsigned int get_ich_codec_bit(struct intel8x0m *chip, unsigned int codec)
{
static const unsigned int codec_bit[3] = {
ICH_PCR, ICH_SCR, ICH_TCR
};
if (snd_BUG_ON(codec >= 3))
return ICH_PCR;
return codec_bit[codec];
}
static int snd_intel8x0m_codec_semaphore(struct intel8x0m *chip, unsigned int codec)
{
int time;
if (codec > 1)
return -EIO;
codec = get_ich_codec_bit(chip, codec);
/* codec ready ? */
if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
return -EIO;
/* Anyone holding a semaphore for 1 msec should be shot... */
time = 100;
do {
if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
return 0;
udelay(10);
} while (time--);
/* access to some forbidden (non existent) ac97 registers will not
* reset the semaphore. So even if you don't get the semaphore, still
* continue the access. We don't need the semaphore anyway. */
dev_err(chip->card->dev,
"codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
iagetword(chip, 0); /* clear semaphore flag */
/* I don't care about the semaphore */
return -EBUSY;
}
static void snd_intel8x0m_codec_write(struct snd_ac97 *ac97,
unsigned short reg,
unsigned short val)
{
struct intel8x0m *chip = ac97->private_data;
if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
if (! chip->in_ac97_init)
dev_err(chip->card->dev,
"codec_write %d: semaphore is not ready for register 0x%x\n",
ac97->num, reg);
}
iaputword(chip, reg + ac97->num * 0x80, val);
}
static unsigned short snd_intel8x0m_codec_read(struct snd_ac97 *ac97,
unsigned short reg)
{
struct intel8x0m *chip = ac97->private_data;
unsigned short res;
unsigned int tmp;
if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
if (! chip->in_ac97_init)
dev_err(chip->card->dev,
"codec_read %d: semaphore is not ready for register 0x%x\n",
ac97->num, reg);
res = 0xffff;
} else {
res = iagetword(chip, reg + ac97->num * 0x80);
tmp = igetdword(chip, ICHREG(GLOB_STA));
if (tmp & ICH_RCS) {
/* reset RCS and preserve other R/WC bits */
iputdword(chip, ICHREG(GLOB_STA),
tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
if (! chip->in_ac97_init)
dev_err(chip->card->dev,
"codec_read %d: read timeout for register 0x%x\n",
ac97->num, reg);
res = 0xffff;
}
}
if (reg == AC97_GPIO_STATUS)
iagetword(chip, 0); /* clear semaphore */
return res;
}
/*
* DMA I/O
*/
static void snd_intel8x0m_setup_periods(struct intel8x0m *chip, struct ichdev *ichdev)
{
int idx;
__le32 *bdbar = ichdev->bdbar;
unsigned long port = ichdev->reg_offset;
iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
if (ichdev->size == ichdev->fragsize) {
ichdev->ack_reload = ichdev->ack = 2;
ichdev->fragsize1 = ichdev->fragsize >> 1;
for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
ichdev->fragsize1 >> chip->pcm_pos_shift);
bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
ichdev->fragsize1 >> chip->pcm_pos_shift);
}
ichdev->frags = 2;
} else {
ichdev->ack_reload = ichdev->ack = 1;
ichdev->fragsize1 = ichdev->fragsize;
for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
ichdev->fragsize >> chip->pcm_pos_shift);
/*
dev_dbg(chip->card->dev, "bdbar[%i] = 0x%x [0x%x]\n",
idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
*/
}
ichdev->frags = ichdev->size / ichdev->fragsize;
}
iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
ichdev->civ = 0;
iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
ichdev->position = 0;
#if 0
dev_dbg(chip->card->dev,
"lvi_frag = %i, frags = %i, period_size = 0x%x, period_size1 = 0x%x\n",
ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
ichdev->fragsize1);
#endif
/* clear interrupts */
iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
}
/*
* Interrupt handler
*/
static inline void snd_intel8x0m_update(struct intel8x0m *chip, struct ichdev *ichdev)
{
unsigned long port = ichdev->reg_offset;
int civ, i, step;
int ack = 0;
civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
if (civ == ichdev->civ) {
// snd_printd("civ same %d\n", civ);
step = 1;
ichdev->civ++;
ichdev->civ &= ICH_REG_LVI_MASK;
} else {
step = civ - ichdev->civ;
if (step < 0)
step += ICH_REG_LVI_MASK + 1;
// if (step != 1)
// snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
ichdev->civ = civ;
}
ichdev->position += step * ichdev->fragsize1;
ichdev->position %= ichdev->size;
ichdev->lvi += step;
ichdev->lvi &= ICH_REG_LVI_MASK;
iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
for (i = 0; i < step; i++) {
ichdev->lvi_frag++;
ichdev->lvi_frag %= ichdev->frags;
ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf +
ichdev->lvi_frag *
ichdev->fragsize1);
#if 0
dev_dbg(chip->card->dev,
"new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, all = 0x%x, 0x%x\n",
ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
inl(port + 4), inb(port + ICH_REG_OFF_CR));
#endif
if (--ichdev->ack == 0) {
ichdev->ack = ichdev->ack_reload;
ack = 1;
}
}
if (ack && ichdev->substream) {
spin_unlock(&chip->reg_lock);
snd_pcm_period_elapsed(ichdev->substream);
spin_lock(&chip->reg_lock);
}
iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
}
static irqreturn_t snd_intel8x0m_interrupt(int irq, void *dev_id)
{
struct intel8x0m *chip = dev_id;
struct ichdev *ichdev;
unsigned int status;
unsigned int i;
spin_lock(&chip->reg_lock);
status = igetdword(chip, chip->int_sta_reg);
if (status == 0xffffffff) { /* we are not yet resumed */
spin_unlock(&chip->reg_lock);
return IRQ_NONE;
}
if ((status & chip->int_sta_mask) == 0) {
if (status)
iputdword(chip, chip->int_sta_reg, status);
spin_unlock(&chip->reg_lock);
return IRQ_NONE;
}
for (i = 0; i < chip->bdbars_count; i++) {
ichdev = &chip->ichd[i];
if (status & ichdev->int_sta_mask)
snd_intel8x0m_update(chip, ichdev);
}
/* ack them */
iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
spin_unlock(&chip->reg_lock);
return IRQ_HANDLED;
}
/*
* PCM part
*/
static int snd_intel8x0m_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
struct ichdev *ichdev = get_ichdev(substream);
unsigned char val = 0;
unsigned long port = ichdev->reg_offset;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
val = ICH_IOCE | ICH_STARTBM;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
val = 0;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
val = ICH_IOCE;
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
val = ICH_IOCE | ICH_STARTBM;
break;
default:
return -EINVAL;
}
iputbyte(chip, port + ICH_REG_OFF_CR, val);
if (cmd == SNDRV_PCM_TRIGGER_STOP) {
/* wait until DMA stopped */
while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
/* reset whole DMA things */
iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
}
return 0;
}
static snd_pcm_uframes_t snd_intel8x0m_pcm_pointer(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
struct ichdev *ichdev = get_ichdev(substream);
size_t ptr1, ptr;
ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
if (ptr1 != 0)
ptr = ichdev->fragsize1 - ptr1;
else
ptr = 0;
ptr += ichdev->position;
if (ptr >= ichdev->size)
return 0;
return bytes_to_frames(substream->runtime, ptr);
}
static int snd_intel8x0m_pcm_prepare(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct ichdev *ichdev = get_ichdev(substream);
ichdev->physbuf = runtime->dma_addr;
ichdev->size = snd_pcm_lib_buffer_bytes(substream);
ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
snd_intel8x0m_setup_periods(chip, ichdev);
return 0;
}
static const struct snd_pcm_hardware snd_intel8x0m_stream =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME),
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
.rate_min = 8000,
.rate_max = 16000,
.channels_min = 1,
.channels_max = 1,
.buffer_bytes_max = 64 * 1024,
.period_bytes_min = 32,
.period_bytes_max = 64 * 1024,
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
static int snd_intel8x0m_pcm_open(struct snd_pcm_substream *substream, struct ichdev *ichdev)
{
static const unsigned int rates[] = { 8000, 9600, 12000, 16000 };
static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
.count = ARRAY_SIZE(rates),
.list = rates,
.mask = 0,
};
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
ichdev->substream = substream;
runtime->hw = snd_intel8x0m_stream;
err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
&hw_constraints_rates);
if ( err < 0 )
return err;
runtime->private_data = ichdev;
return 0;
}
static int snd_intel8x0m_playback_open(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
}
static int snd_intel8x0m_playback_close(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
chip->ichd[ICHD_MDMOUT].substream = NULL;
return 0;
}
static int snd_intel8x0m_capture_open(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
}
static int snd_intel8x0m_capture_close(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
chip->ichd[ICHD_MDMIN].substream = NULL;
return 0;
}
static const struct snd_pcm_ops snd_intel8x0m_playback_ops = {
.open = snd_intel8x0m_playback_open,
.close = snd_intel8x0m_playback_close,
.prepare = snd_intel8x0m_pcm_prepare,
.trigger = snd_intel8x0m_pcm_trigger,
.pointer = snd_intel8x0m_pcm_pointer,
};
static const struct snd_pcm_ops snd_intel8x0m_capture_ops = {
.open = snd_intel8x0m_capture_open,
.close = snd_intel8x0m_capture_close,
.prepare = snd_intel8x0m_pcm_prepare,
.trigger = snd_intel8x0m_pcm_trigger,
.pointer = snd_intel8x0m_pcm_pointer,
};
struct ich_pcm_table {
char *suffix;
const struct snd_pcm_ops *playback_ops;
const struct snd_pcm_ops *capture_ops;
size_t prealloc_size;
size_t prealloc_max_size;
int ac97_idx;
};
static int snd_intel8x0m_pcm1(struct intel8x0m *chip, int device,
const struct ich_pcm_table *rec)
{
struct snd_pcm *pcm;
int err;
char name[32];
if (rec->suffix)
sprintf(name, "Intel ICH - %s", rec->suffix);
else
strcpy(name, "Intel ICH");
err = snd_pcm_new(chip->card, name, device,
rec->playback_ops ? 1 : 0,
rec->capture_ops ? 1 : 0, &pcm);
if (err < 0)
return err;
if (rec->playback_ops)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
if (rec->capture_ops)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
pcm->private_data = chip;
pcm->info_flags = 0;
pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
if (rec->suffix)
sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
else
strcpy(pcm->name, chip->card->shortname);
chip->pcm[device] = pcm;
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
&chip->pci->dev,
rec->prealloc_size,
rec->prealloc_max_size);
return 0;
}
static const struct ich_pcm_table intel_pcms[] = {
{
.suffix = "Modem",
.playback_ops = &snd_intel8x0m_playback_ops,
.capture_ops = &snd_intel8x0m_capture_ops,
.prealloc_size = 32 * 1024,
.prealloc_max_size = 64 * 1024,
},
};
static int snd_intel8x0m_pcm(struct intel8x0m *chip)
{
int i, tblsize, device, err;
const struct ich_pcm_table *tbl, *rec;
#if 1
tbl = intel_pcms;
tblsize = 1;
#else
switch (chip->device_type) {
case DEVICE_NFORCE:
tbl = nforce_pcms;
tblsize = ARRAY_SIZE(nforce_pcms);
break;
case DEVICE_ALI:
tbl = ali_pcms;
tblsize = ARRAY_SIZE(ali_pcms);
break;
default:
tbl = intel_pcms;
tblsize = 2;
break;
}
#endif
device = 0;
for (i = 0; i < tblsize; i++) {
rec = tbl + i;
if (i > 0 && rec->ac97_idx) {
/* activate PCM only when associated AC'97 codec */
if (! chip->ichd[rec->ac97_idx].ac97)
continue;
}
err = snd_intel8x0m_pcm1(chip, device, rec);
if (err < 0)
return err;
device++;
}
chip->pcm_devs = device;
return 0;
}
/*
* Mixer part
*/
static void snd_intel8x0m_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
{
struct intel8x0m *chip = bus->private_data;
chip->ac97_bus = NULL;
}
static void snd_intel8x0m_mixer_free_ac97(struct snd_ac97 *ac97)
{
struct intel8x0m *chip = ac97->private_data;
chip->ac97 = NULL;
}
static int snd_intel8x0m_mixer(struct intel8x0m *chip, int ac97_clock)
{
struct snd_ac97_bus *pbus;
struct snd_ac97_template ac97;
struct snd_ac97 *x97;
int err;
unsigned int glob_sta = 0;
static const struct snd_ac97_bus_ops ops = {
.write = snd_intel8x0m_codec_write,
.read = snd_intel8x0m_codec_read,
};
chip->in_ac97_init = 1;
memset(&ac97, 0, sizeof(ac97));
ac97.private_data = chip;
ac97.private_free = snd_intel8x0m_mixer_free_ac97;
ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
glob_sta = igetdword(chip, ICHREG(GLOB_STA));
err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus);
if (err < 0)
goto __err;
pbus->private_free = snd_intel8x0m_mixer_free_ac97_bus;
if (ac97_clock >= 8000 && ac97_clock <= 48000)
pbus->clock = ac97_clock;
chip->ac97_bus = pbus;
ac97.pci = chip->pci;
ac97.num = glob_sta & ICH_SCR ? 1 : 0;
err = snd_ac97_mixer(pbus, &ac97, &x97);
if (err < 0) {
dev_err(chip->card->dev,
"Unable to initialize codec #%d\n", ac97.num);
if (ac97.num == 0)
goto __err;
return err;
}
chip->ac97 = x97;
if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
chip->ichd[ICHD_MDMIN].ac97 = x97;
chip->ichd[ICHD_MDMOUT].ac97 = x97;
}
chip->in_ac97_init = 0;
return 0;
__err:
/* clear the cold-reset bit for the next chance */
if (chip->device_type != DEVICE_ALI)
iputdword(chip, ICHREG(GLOB_CNT),
igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
return err;
}
/*
*
*/
static int snd_intel8x0m_ich_chip_init(struct intel8x0m *chip, int probing)
{
unsigned long end_time;
unsigned int cnt, status, nstatus;
/* put logic to right state */
/* first clear status bits */
status = ICH_RCS | ICH_MIINT | ICH_MOINT;
cnt = igetdword(chip, ICHREG(GLOB_STA));
iputdword(chip, ICHREG(GLOB_STA), cnt & status);
/* ACLink on, 2 channels */
cnt = igetdword(chip, ICHREG(GLOB_CNT));
cnt &= ~(ICH_ACLINK);
/* finish cold or do warm reset */
cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
iputdword(chip, ICHREG(GLOB_CNT), cnt);
usleep_range(500, 1000); /* give warm reset some time */
end_time = jiffies + HZ / 4;
do {
if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
goto __ok;
schedule_timeout_uninterruptible(1);
} while (time_after_eq(end_time, jiffies));
dev_err(chip->card->dev, "AC'97 warm reset still in progress? [0x%x]\n",
igetdword(chip, ICHREG(GLOB_CNT)));
return -EIO;
__ok:
if (probing) {
/* wait for any codec ready status.
* Once it becomes ready it should remain ready
* as long as we do not disable the ac97 link.
*/
end_time = jiffies + HZ;
do {
status = igetdword(chip, ICHREG(GLOB_STA)) &
(ICH_PCR | ICH_SCR | ICH_TCR);
if (status)
break;
schedule_timeout_uninterruptible(1);
} while (time_after_eq(end_time, jiffies));
if (! status) {
/* no codec is found */
dev_err(chip->card->dev,
"codec_ready: codec is not ready [0x%x]\n",
igetdword(chip, ICHREG(GLOB_STA)));
return -EIO;
}
/* up to two codecs (modem cannot be tertiary with ICH4) */
nstatus = ICH_PCR | ICH_SCR;
/* wait for other codecs ready status. */
end_time = jiffies + HZ / 4;
while (status != nstatus && time_after_eq(end_time, jiffies)) {
schedule_timeout_uninterruptible(1);
status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
}
} else {
/* resume phase */
status = 0;
if (chip->ac97)
status |= get_ich_codec_bit(chip, chip->ac97->num);
/* wait until all the probed codecs are ready */
end_time = jiffies + HZ;
do {
nstatus = igetdword(chip, ICHREG(GLOB_STA)) &
(ICH_PCR | ICH_SCR | ICH_TCR);
if (status == nstatus)
break;
schedule_timeout_uninterruptible(1);
} while (time_after_eq(end_time, jiffies));
}
if (chip->device_type == DEVICE_SIS) {
/* unmute the output on SIS7012 */
iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
}
return 0;
}
static int snd_intel8x0m_chip_init(struct intel8x0m *chip, int probing)
{
unsigned int i;
int err;
err = snd_intel8x0m_ich_chip_init(chip, probing);
if (err < 0)
return err;
iagetword(chip, 0); /* clear semaphore flag */
/* disable interrupts */
for (i = 0; i < chip->bdbars_count; i++)
iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
/* reset channels */
for (i = 0; i < chip->bdbars_count; i++)
iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
/* initialize Buffer Descriptor Lists */
for (i = 0; i < chip->bdbars_count; i++)
iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
return 0;
}
static void snd_intel8x0m_free(struct snd_card *card)
{
struct intel8x0m *chip = card->private_data;
unsigned int i;
if (chip->irq < 0)
goto __hw_end;
/* disable interrupts */
for (i = 0; i < chip->bdbars_count; i++)
iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
/* reset channels */
for (i = 0; i < chip->bdbars_count; i++)
iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
__hw_end:
if (chip->irq >= 0)
free_irq(chip->irq, chip);
}
#ifdef CONFIG_PM_SLEEP
/*
* power management
*/
static int intel8x0m_suspend(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
struct intel8x0m *chip = card->private_data;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
snd_ac97_suspend(chip->ac97);
if (chip->irq >= 0) {
free_irq(chip->irq, chip);
chip->irq = -1;
card->sync_irq = -1;
}
return 0;
}
static int intel8x0m_resume(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct snd_card *card = dev_get_drvdata(dev);
struct intel8x0m *chip = card->private_data;
if (request_irq(pci->irq, snd_intel8x0m_interrupt,
IRQF_SHARED, KBUILD_MODNAME, chip)) {
dev_err(dev, "unable to grab IRQ %d, disabling device\n",
pci->irq);
snd_card_disconnect(card);
return -EIO;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
snd_intel8x0m_chip_init(chip, 0);
snd_ac97_resume(chip->ac97);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
static SIMPLE_DEV_PM_OPS(intel8x0m_pm, intel8x0m_suspend, intel8x0m_resume);
#define INTEL8X0M_PM_OPS &intel8x0m_pm
#else
#define INTEL8X0M_PM_OPS NULL
#endif /* CONFIG_PM_SLEEP */
static void snd_intel8x0m_proc_read(struct snd_info_entry * entry,
struct snd_info_buffer *buffer)
{
struct intel8x0m *chip = entry->private_data;
unsigned int tmp;
snd_iprintf(buffer, "Intel8x0m\n\n");
if (chip->device_type == DEVICE_ALI)
return;
tmp = igetdword(chip, ICHREG(GLOB_STA));
snd_iprintf(buffer, "Global control : 0x%08x\n",
igetdword(chip, ICHREG(GLOB_CNT)));
snd_iprintf(buffer, "Global status : 0x%08x\n", tmp);
snd_iprintf(buffer, "AC'97 codecs ready :%s%s%s%s\n",
tmp & ICH_PCR ? " primary" : "",
tmp & ICH_SCR ? " secondary" : "",
tmp & ICH_TCR ? " tertiary" : "",
(tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
}
static void snd_intel8x0m_proc_init(struct intel8x0m *chip)
{
snd_card_ro_proc_new(chip->card, "intel8x0m", chip,
snd_intel8x0m_proc_read);
}
struct ich_reg_info {
unsigned int int_sta_mask;
unsigned int offset;
};
static int snd_intel8x0m_init(struct snd_card *card,
struct pci_dev *pci,
unsigned long device_type)
{
struct intel8x0m *chip = card->private_data;
int err;
unsigned int i;
unsigned int int_sta_masks;
struct ichdev *ichdev;
static const struct ich_reg_info intel_regs[2] = {
{ ICH_MIINT, 0 },
{ ICH_MOINT, 0x10 },
};
const struct ich_reg_info *tbl;
err = pcim_enable_device(pci);
if (err < 0)
return err;
spin_lock_init(&chip->reg_lock);
chip->device_type = device_type;
chip->card = card;
chip->pci = pci;
chip->irq = -1;
err = pci_request_regions(pci, card->shortname);
if (err < 0)
return err;
if (device_type == DEVICE_ALI) {
/* ALI5455 has no ac97 region */
chip->bmaddr = pcim_iomap(pci, 0, 0);
} else {
if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) /* ICH4 and Nforce */
chip->addr = pcim_iomap(pci, 2, 0);
else
chip->addr = pcim_iomap(pci, 0, 0);
if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) /* ICH4 */
chip->bmaddr = pcim_iomap(pci, 3, 0);
else
chip->bmaddr = pcim_iomap(pci, 1, 0);
}
/* initialize offsets */
chip->bdbars_count = 2;
tbl = intel_regs;
for (i = 0; i < chip->bdbars_count; i++) {
ichdev = &chip->ichd[i];
ichdev->ichd = i;
ichdev->reg_offset = tbl[i].offset;
ichdev->int_sta_mask = tbl[i].int_sta_mask;
if (device_type == DEVICE_SIS) {
/* SiS 7013 swaps the registers */
ichdev->roff_sr = ICH_REG_OFF_PICB;
ichdev->roff_picb = ICH_REG_OFF_SR;
} else {
ichdev->roff_sr = ICH_REG_OFF_SR;
ichdev->roff_picb = ICH_REG_OFF_PICB;
}
if (device_type == DEVICE_ALI)
ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
}
/* SIS7013 handles the pcm data in bytes, others are in words */
chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
/* allocate buffer descriptor lists */
/* the start of each lists must be aligned to 8 bytes */
chip->bdbars = snd_devm_alloc_pages(&pci->dev, SNDRV_DMA_TYPE_DEV,
chip->bdbars_count * sizeof(u32) *
ICH_MAX_FRAGS * 2);
if (!chip->bdbars)
return -ENOMEM;
/* tables must be aligned to 8 bytes here, but the kernel pages
are much bigger, so we don't care (on i386) */
int_sta_masks = 0;
for (i = 0; i < chip->bdbars_count; i++) {
ichdev = &chip->ichd[i];
ichdev->bdbar = ((__le32 *)chip->bdbars->area) + (i * ICH_MAX_FRAGS * 2);
ichdev->bdbar_addr = chip->bdbars->addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
int_sta_masks |= ichdev->int_sta_mask;
}
chip->int_sta_reg = ICH_REG_GLOB_STA;
chip->int_sta_mask = int_sta_masks;
pci_set_master(pci);
err = snd_intel8x0m_chip_init(chip, 1);
if (err < 0)
return err;
/* NOTE: we don't use devm version here since it's released /
* re-acquired in PM callbacks.
* It's released explicitly in snd_intel8x0m_free(), too.
*/
if (request_irq(pci->irq, snd_intel8x0m_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
return -EBUSY;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
card->private_free = snd_intel8x0m_free;
return 0;
}
static struct shortname_table {
unsigned int id;
const char *s;
} shortnames[] = {
{ PCI_DEVICE_ID_INTEL_82801AA_6, "Intel 82801AA-ICH" },
{ PCI_DEVICE_ID_INTEL_82801AB_6, "Intel 82901AB-ICH0" },
{ PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
{ PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
{ PCI_DEVICE_ID_INTEL_82801CA_6, "Intel 82801CA-ICH3" },
{ PCI_DEVICE_ID_INTEL_82801DB_6, "Intel 82801DB-ICH4" },
{ PCI_DEVICE_ID_INTEL_82801EB_6, "Intel ICH5" },
{ PCI_DEVICE_ID_INTEL_ICH6_17, "Intel ICH6" },
{ PCI_DEVICE_ID_INTEL_ICH7_19, "Intel ICH7" },
{ 0x7446, "AMD AMD768" },
{ PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
{ PCI_DEVICE_ID_NVIDIA_MCP1_MODEM, "NVidia nForce" },
{ PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
{ PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
{ PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
{ 0x746e, "AMD AMD8111" },
#if 0
{ 0x5455, "ALi M5455" },
#endif
{ 0 },
};
static int __snd_intel8x0m_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
struct snd_card *card;
struct intel8x0m *chip;
int err;
struct shortname_table *name;
err = snd_devm_card_new(&pci->dev, index, id, THIS_MODULE,
sizeof(*chip), &card);
if (err < 0)
return err;
chip = card->private_data;
strcpy(card->driver, "ICH-MODEM");
strcpy(card->shortname, "Intel ICH");
for (name = shortnames; name->id; name++) {
if (pci->device == name->id) {
strcpy(card->shortname, name->s);
break;
}
}
strcat(card->shortname," Modem");
err = snd_intel8x0m_init(card, pci, pci_id->driver_data);
if (err < 0)
return err;
err = snd_intel8x0m_mixer(chip, ac97_clock);
if (err < 0)
return err;
err = snd_intel8x0m_pcm(chip);
if (err < 0)
return err;
snd_intel8x0m_proc_init(chip);
sprintf(card->longname, "%s at irq %i",
card->shortname, chip->irq);
err = snd_card_register(card);
if (err < 0)
return err;
pci_set_drvdata(pci, card);
return 0;
}
static int snd_intel8x0m_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
return snd_card_free_on_error(&pci->dev, __snd_intel8x0m_probe(pci, pci_id));
}
static struct pci_driver intel8x0m_driver = {
.name = KBUILD_MODNAME,
.id_table = snd_intel8x0m_ids,
.probe = snd_intel8x0m_probe,
.driver = {
.pm = INTEL8X0M_PM_OPS,
},
};
module_pci_driver(intel8x0m_driver);
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