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ASoC: Intel: Fix Audio DSP usage when IOMMU is enabled.

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The Intel IOMMU requires that the ACPI device is used to allocate all
DMA memory buffers. This means we need to pass the DMA device pointer into child
component devices that allocate DMA memory.

We also only set the DMA mask for the ACPI device now instead of for each
component device.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Liam Girdwood 2014-05-02 16:56:31 +01:00 committed by Mark Brown
parent 0b708c87f6
commit 10df350977
7 changed files with 12 additions and 15 deletions
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1
sound/soc/intel/sst-acpi.c
View File

@ -138,6 +138,7 @@ static int sst_acpi_probe(struct platform_device *pdev)
sst_pdata = &sst_acpi->sst_pdata;
sst_pdata->id = desc->sst_id;
sst_pdata->dma_dev = dev;
sst_acpi->desc = desc;
sst_acpi->mach = mach;

1
sound/soc/intel/sst-dsp-priv.h
View File

@ -228,6 +228,7 @@ struct sst_dsp {
spinlock_t spinlock; /* IPC locking */
struct mutex mutex; /* DSP FW lock */
struct device *dev;
struct device *dma_dev;
void *thread_context;
int irq;
u32 id;

1
sound/soc/intel/sst-dsp.c
View File

@ -337,6 +337,7 @@ struct sst_dsp *sst_dsp_new(struct device *dev,
spin_lock_init(&sst->spinlock);
mutex_init(&sst->mutex);
sst->dev = dev;
sst->dma_dev = pdata->dma_dev;
sst->thread_context = sst_dev->thread_context;
sst->sst_dev = sst_dev;
sst->id = pdata->id;

1
sound/soc/intel/sst-dsp.h
View File

@ -169,6 +169,7 @@ struct sst_pdata {
u32 dma_base;
u32 dma_size;
int dma_engine;
struct device *dma_dev;
/* DSP */
u32 id;

10
sound/soc/intel/sst-firmware.c
View File

@ -57,14 +57,8 @@ struct sst_fw *sst_fw_new(struct sst_dsp *dsp,
sst_fw->private = private;
sst_fw->size = fw->size;
err = dma_coerce_mask_and_coherent(dsp->dev, DMA_BIT_MASK(32));
if (err < 0) {
kfree(sst_fw);
return NULL;
}
/* allocate DMA buffer to store FW data */
sst_fw->dma_buf = dma_alloc_coherent(dsp->dev, sst_fw->size,
sst_fw->dma_buf = dma_alloc_coherent(dsp->dma_dev, sst_fw->size,
&sst_fw->dmable_fw_paddr, GFP_DMA | GFP_KERNEL);
if (!sst_fw->dma_buf) {
dev_err(dsp->dev, "error: DMA alloc failed\n");
@ -106,7 +100,7 @@ void sst_fw_free(struct sst_fw *sst_fw)
list_del(&sst_fw->list);
mutex_unlock(&dsp->mutex);
dma_free_coherent(dsp->dev, sst_fw->size, sst_fw->dma_buf,
dma_free_coherent(dsp->dma_dev, sst_fw->size, sst_fw->dma_buf,
sst_fw->dmable_fw_paddr);
kfree(sst_fw);
}

4
sound/soc/intel/sst-haswell-dsp.c
View File

@ -433,7 +433,7 @@ static int hsw_init(struct sst_dsp *sst, struct sst_pdata *pdata)
int ret = -ENODEV, i, j, region_count;
u32 offset, size;
dev = sst->dev;
dev = sst->dma_dev;
switch (sst->id) {
case SST_DEV_ID_LYNX_POINT:
@ -466,7 +466,7 @@ static int hsw_init(struct sst_dsp *sst, struct sst_pdata *pdata)
return ret;
}
ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(31));
if (ret)
return ret;

9
sound/soc/intel/sst-haswell-pcm.c
View File

@ -633,17 +633,16 @@ static void hsw_pcm_free(struct snd_pcm *pcm)
static int hsw_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_pcm *pcm = rtd->pcm;
struct snd_soc_platform *platform = rtd->platform;
struct sst_pdata *pdata = dev_get_platdata(platform->dev);
struct device *dev = pdata->dma_dev;
int ret = 0;
ret = dma_coerce_mask_and_coherent(rtd->card->dev, DMA_BIT_MASK(32));
if (ret)
return ret;
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_DEV_SG,
rtd->card->dev,
dev,
hsw_pcm_hardware.buffer_bytes_max,
hsw_pcm_hardware.buffer_bytes_max);
if (ret) {