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Diffstat (limited to 'sound/pci/hda/hda_intel.c')
-rw-r--r--sound/pci/hda/hda_intel.c225
1 files changed, 188 insertions, 37 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 191284a1c0ae..bd7fc99af187 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -34,7 +34,6 @@
*
*/
-#include <asm/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
@@ -46,6 +45,12 @@
#include <linux/pci.h>
#include <linux/mutex.h>
#include <linux/reboot.h>
+#include <linux/io.h>
+#ifdef CONFIG_X86
+/* for snoop control */
+#include <asm/pgtable.h>
+#include <asm/cacheflush.h>
+#endif
#include <sound/core.h>
#include <sound/initval.h>
#include "hda_codec.h"
@@ -116,6 +121,22 @@ module_param(power_save_controller, bool, 0644);
MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
#endif
+static int align_buffer_size = 1;
+module_param(align_buffer_size, bool, 0644);
+MODULE_PARM_DESC(align_buffer_size,
+ "Force buffer and period sizes to be multiple of 128 bytes.");
+
+#ifdef CONFIG_X86
+static bool hda_snoop = true;
+module_param_named(snoop, hda_snoop, bool, 0444);
+MODULE_PARM_DESC(snoop, "Enable/disable snooping");
+#define azx_snoop(chip) (chip)->snoop
+#else
+#define hda_snoop true
+#define azx_snoop(chip) true
+#endif
+
+
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
"{Intel, ICH6M},"
@@ -360,7 +381,7 @@ struct azx_dev {
*/
unsigned char stream_tag; /* assigned stream */
unsigned char index; /* stream index */
- int device; /* last device number assigned to */
+ int assigned_key; /* last device# key assigned to */
unsigned int opened :1;
unsigned int running :1;
@@ -371,6 +392,7 @@ struct azx_dev {
* when link position is not greater than FIFO size
*/
unsigned int insufficient :1;
+ unsigned int wc_marked:1;
};
/* CORB/RIRB */
@@ -438,6 +460,7 @@ struct azx {
unsigned int msi :1;
unsigned int irq_pending_warned :1;
unsigned int probing :1; /* codec probing phase */
+ unsigned int snoop:1;
/* for debugging */
unsigned int last_cmd[AZX_MAX_CODECS];
@@ -481,6 +504,7 @@ enum {
#define AZX_DCAPS_NO_64BIT (1 << 18) /* No 64bit address */
#define AZX_DCAPS_SYNC_WRITE (1 << 19) /* sync each cmd write */
#define AZX_DCAPS_OLD_SSYNC (1 << 20) /* Old SSYNC reg for ICH */
+#define AZX_DCAPS_BUFSIZE (1 << 21) /* no buffer size alignment */
/* quirks for ATI SB / AMD Hudson */
#define AZX_DCAPS_PRESET_ATI_SB \
@@ -542,6 +566,45 @@ static char *driver_short_names[] __devinitdata = {
/* for pcm support */
#define get_azx_dev(substream) (substream->runtime->private_data)
+#ifdef CONFIG_X86
+static void __mark_pages_wc(struct azx *chip, void *addr, size_t size, bool on)
+{
+ if (azx_snoop(chip))
+ return;
+ if (addr && size) {
+ int pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
+ if (on)
+ set_memory_wc((unsigned long)addr, pages);
+ else
+ set_memory_wb((unsigned long)addr, pages);
+ }
+}
+
+static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
+ bool on)
+{
+ __mark_pages_wc(chip, buf->area, buf->bytes, on);
+}
+static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
+ struct snd_pcm_runtime *runtime, bool on)
+{
+ if (azx_dev->wc_marked != on) {
+ __mark_pages_wc(chip, runtime->dma_area, runtime->dma_bytes, on);
+ azx_dev->wc_marked = on;
+ }
+}
+#else
+/* NOP for other archs */
+static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
+ bool on)
+{
+}
+static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
+ struct snd_pcm_runtime *runtime, bool on)
+{
+}
+#endif
+
static int azx_acquire_irq(struct azx *chip, int do_disconnect);
static int azx_send_cmd(struct hda_bus *bus, unsigned int val);
/*
@@ -563,6 +626,7 @@ static int azx_alloc_cmd_io(struct azx *chip)
snd_printk(KERN_ERR SFX "cannot allocate CORB/RIRB\n");
return err;
}
+ mark_pages_wc(chip, &chip->rb, true);
return 0;
}
@@ -1079,7 +1143,15 @@ static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
static void azx_init_pci(struct azx *chip)
{
- unsigned short snoop;
+ /* force to non-snoop mode for a new VIA controller when BIOS is set */
+ if (chip->snoop && chip->driver_type == AZX_DRIVER_VIA) {
+ u8 snoop;
+ pci_read_config_byte(chip->pci, 0x42, &snoop);
+ if (!(snoop & 0x80) && chip->pci->revision == 0x30) {
+ chip->snoop = 0;
+ snd_printdd(SFX "Force to non-snoop mode\n");
+ }
+ }
/* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
* TCSEL == Traffic Class Select Register, which sets PCI express QOS
@@ -1096,15 +1168,15 @@ static void azx_init_pci(struct azx *chip)
* we need to enable snoop.
*/
if (chip->driver_caps & AZX_DCAPS_ATI_SNOOP) {
- snd_printdd(SFX "Enabling ATI snoop\n");
+ snd_printdd(SFX "Setting ATI snoop: %d\n", azx_snoop(chip));
update_pci_byte(chip->pci,
- ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR,
- 0x07, ATI_SB450_HDAUDIO_ENABLE_SNOOP);
+ ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
+ azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
}
/* For NVIDIA HDA, enable snoop */
if (chip->driver_caps & AZX_DCAPS_NVIDIA_SNOOP) {
- snd_printdd(SFX "Enabling Nvidia snoop\n");
+ snd_printdd(SFX "Setting Nvidia snoop: %d\n", azx_snoop(chip));
update_pci_byte(chip->pci,
NVIDIA_HDA_TRANSREG_ADDR,
0x0f, NVIDIA_HDA_ENABLE_COHBITS);
@@ -1118,16 +1190,20 @@ static void azx_init_pci(struct azx *chip)
/* Enable SCH/PCH snoop if needed */
if (chip->driver_caps & AZX_DCAPS_SCH_SNOOP) {
+ unsigned short snoop;
pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
- if (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) {
- pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC,
- snoop & (~INTEL_SCH_HDA_DEVC_NOSNOOP));
+ if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
+ (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
+ snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
+ if (!azx_snoop(chip))
+ snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
+ pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
pci_read_config_word(chip->pci,
INTEL_SCH_HDA_DEVC, &snoop);
- snd_printdd(SFX "HDA snoop disabled, enabling ... %s\n",
- (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)
- ? "Failed" : "OK");
}
+ snd_printdd(SFX "SCH snoop: %s\n",
+ (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)
+ ? "Disabled" : "Enabled");
}
}
@@ -1334,12 +1410,16 @@ static void azx_stream_reset(struct azx *chip, struct azx_dev *azx_dev)
*/
static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
{
+ unsigned int val;
/* make sure the run bit is zero for SD */
azx_stream_clear(chip, azx_dev);
/* program the stream_tag */
- azx_sd_writel(azx_dev, SD_CTL,
- (azx_sd_readl(azx_dev, SD_CTL) & ~SD_CTL_STREAM_TAG_MASK)|
- (azx_dev->stream_tag << SD_CTL_STREAM_TAG_SHIFT));
+ val = azx_sd_readl(azx_dev, SD_CTL);
+ val = (val & ~SD_CTL_STREAM_TAG_MASK) |
+ (azx_dev->stream_tag << SD_CTL_STREAM_TAG_SHIFT);
+ if (!azx_snoop(chip))
+ val |= SD_CTL_TRAFFIC_PRIO;
+ azx_sd_writel(azx_dev, SD_CTL, val);
/* program the length of samples in cyclic buffer */
azx_sd_writel(azx_dev, SD_CBL, azx_dev->bufsize);
@@ -1533,6 +1613,9 @@ azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
{
int dev, i, nums;
struct azx_dev *res = NULL;
+ /* make a non-zero unique key for the substream */
+ int key = (substream->pcm->device << 16) | (substream->number << 2) |
+ (substream->stream + 1);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
dev = chip->playback_index_offset;
@@ -1544,12 +1627,12 @@ azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
for (i = 0; i < nums; i++, dev++)
if (!chip->azx_dev[dev].opened) {
res = &chip->azx_dev[dev];
- if (res->device == substream->pcm->device)
+ if (res->assigned_key == key)
break;
}
if (res) {
res->opened = 1;
- res->device = substream->pcm->device;
+ res->assigned_key = key;
}
return res;
}
@@ -1599,6 +1682,7 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long flags;
int err;
+ int buff_step;
mutex_lock(&chip->open_mutex);
azx_dev = azx_assign_device(chip, substream);
@@ -1613,10 +1697,25 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
runtime->hw.rates = hinfo->rates;
snd_pcm_limit_hw_rates(runtime);
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+ if (align_buffer_size)
+ /* constrain buffer sizes to be multiple of 128
+ bytes. This is more efficient in terms of memory
+ access but isn't required by the HDA spec and
+ prevents users from specifying exact period/buffer
+ sizes. For example for 44.1kHz, a period size set
+ to 20ms will be rounded to 19.59ms. */
+ buff_step = 128;
+ else
+ /* Don't enforce steps on buffer sizes, still need to
+ be multiple of 4 bytes (HDA spec). Tested on Intel
+ HDA controllers, may not work on all devices where
+ option needs to be disabled */
+ buff_step = 4;
+
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
- 128);
+ buff_step);
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
- 128);
+ buff_step);
snd_hda_power_up(apcm->codec);
err = hinfo->ops.open(hinfo, apcm->codec, substream);
if (err < 0) {
@@ -1671,19 +1770,30 @@ static int azx_pcm_close(struct snd_pcm_substream *substream)
static int azx_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
+ struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
+ struct azx *chip = apcm->chip;
+ struct snd_pcm_runtime *runtime = substream->runtime;
struct azx_dev *azx_dev = get_azx_dev(substream);
+ int ret;
+ mark_runtime_wc(chip, azx_dev, runtime, false);
azx_dev->bufsize = 0;
azx_dev->period_bytes = 0;
azx_dev->format_val = 0;
- return snd_pcm_lib_malloc_pages(substream,
+ ret = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
+ if (ret < 0)
+ return ret;
+ mark_runtime_wc(chip, azx_dev, runtime, true);
+ return ret;
}
static int azx_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
struct azx_dev *azx_dev = get_azx_dev(substream);
+ struct azx *chip = apcm->chip;
+ struct snd_pcm_runtime *runtime = substream->runtime;
struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
/* reset BDL address */
@@ -1696,6 +1806,7 @@ static int azx_pcm_hw_free(struct snd_pcm_substream *substream)
snd_hda_codec_cleanup(apcm->codec, hinfo, substream);
+ mark_runtime_wc(chip, azx_dev, runtime, false);
return snd_pcm_lib_free_pages(substream);
}
@@ -2055,6 +2166,20 @@ static void azx_clear_irq_pending(struct azx *chip)
spin_unlock_irq(&chip->reg_lock);
}
+#ifdef CONFIG_X86
+static int azx_pcm_mmap(struct snd_pcm_substream *substream,
+ struct vm_area_struct *area)
+{
+ struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
+ struct azx *chip = apcm->chip;
+ if (!azx_snoop(chip))
+ area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
+ return snd_pcm_lib_default_mmap(substream, area);
+}
+#else
+#define azx_pcm_mmap NULL
+#endif
+
static struct snd_pcm_ops azx_pcm_ops = {
.open = azx_pcm_open,
.close = azx_pcm_close,
@@ -2064,6 +2189,7 @@ static struct snd_pcm_ops azx_pcm_ops = {
.prepare = azx_pcm_prepare,
.trigger = azx_pcm_trigger,
.pointer = azx_pcm_pointer,
+ .mmap = azx_pcm_mmap,
.page = snd_pcm_sgbuf_ops_page,
};
@@ -2344,13 +2470,19 @@ static int azx_free(struct azx *chip)
if (chip->azx_dev) {
for (i = 0; i < chip->num_streams; i++)
- if (chip->azx_dev[i].bdl.area)
+ if (chip->azx_dev[i].bdl.area) {
+ mark_pages_wc(chip, &chip->azx_dev[i].bdl, false);
snd_dma_free_pages(&chip->azx_dev[i].bdl);
+ }
}
- if (chip->rb.area)
+ if (chip->rb.area) {
+ mark_pages_wc(chip, &chip->rb, false);
snd_dma_free_pages(&chip->rb);
- if (chip->posbuf.area)
+ }
+ if (chip->posbuf.area) {
+ mark_pages_wc(chip, &chip->posbuf, false);
snd_dma_free_pages(&chip->posbuf);
+ }
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip->azx_dev);
@@ -2546,6 +2678,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
check_probe_mask(chip, dev);
chip->single_cmd = single_cmd;
+ chip->snoop = hda_snoop;
if (bdl_pos_adj[dev] < 0) {
switch (chip->driver_type) {
@@ -2618,6 +2751,10 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
gcap &= ~ICH6_GCAP_64OK;
}
+ /* disable buffer size rounding to 128-byte multiples if supported */
+ if (chip->driver_caps & AZX_DCAPS_BUFSIZE)
+ align_buffer_size = 0;
+
/* allow 64bit DMA address if supported by H/W */
if ((gcap & ICH6_GCAP_64OK) && !pci_set_dma_mask(pci, DMA_BIT_MASK(64)))
pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(64));
@@ -2669,6 +2806,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
snd_printk(KERN_ERR SFX "cannot allocate BDL\n");
goto errout;
}
+ mark_pages_wc(chip, &chip->azx_dev[i].bdl, true);
}
/* allocate memory for the position buffer */
err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
@@ -2678,6 +2816,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
snd_printk(KERN_ERR SFX "cannot allocate posbuf\n");
goto errout;
}
+ mark_pages_wc(chip, &chip->posbuf, true);
/* allocate CORB/RIRB */
err = azx_alloc_cmd_io(chip);
if (err < 0)
@@ -2819,37 +2958,49 @@ static void __devexit azx_remove(struct pci_dev *pci)
static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
/* CPT */
{ PCI_DEVICE(0x8086, 0x1c20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |
+ AZX_DCAPS_BUFSIZE },
/* PBG */
{ PCI_DEVICE(0x8086, 0x1d20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |
+ AZX_DCAPS_BUFSIZE},
/* Panther Point */
{ PCI_DEVICE(0x8086, 0x1e20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |
+ AZX_DCAPS_BUFSIZE},
/* SCH */
{ PCI_DEVICE(0x8086, 0x811b),
- .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP },
+ .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |
+ AZX_DCAPS_BUFSIZE},
{ PCI_DEVICE(0x8086, 0x2668),
- .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC }, /* ICH6 */
+ .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
+ AZX_DCAPS_BUFSIZE }, /* ICH6 */
{ PCI_DEVICE(0x8086, 0x27d8),
- .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC }, /* ICH7 */
+ .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
+ AZX_DCAPS_BUFSIZE }, /* ICH7 */
{ PCI_DEVICE(0x8086, 0x269a),
- .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC }, /* ESB2 */
+ .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
+ AZX_DCAPS_BUFSIZE }, /* ESB2 */
{ PCI_DEVICE(0x8086, 0x284b),
- .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC }, /* ICH8 */
+ .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
+ AZX_DCAPS_BUFSIZE }, /* ICH8 */
{ PCI_DEVICE(0x8086, 0x293e),
- .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC }, /* ICH9 */
+ .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
+ AZX_DCAPS_BUFSIZE }, /* ICH9 */
{ PCI_DEVICE(0x8086, 0x293f),
- .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC }, /* ICH9 */
+ .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
+ AZX_DCAPS_BUFSIZE }, /* ICH9 */
{ PCI_DEVICE(0x8086, 0x3a3e),
- .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC }, /* ICH10 */
+ .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
+ AZX_DCAPS_BUFSIZE }, /* ICH10 */
{ PCI_DEVICE(0x8086, 0x3a6e),
- .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC }, /* ICH10 */
+ .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
+ AZX_DCAPS_BUFSIZE }, /* ICH10 */
/* Generic Intel */
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
.class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
.class_mask = 0xffffff,
- .driver_data = AZX_DRIVER_ICH },
+ .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_BUFSIZE },
/* ATI SB 450/600/700/800/900 */
{ PCI_DEVICE(0x1002, 0x437b),
.driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.