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authorTakashi Iwai <tiwai@suse.de>2008-07-30 15:13:34 +0200
committerJaroslav Kysela <perex@perex.cz>2008-08-25 09:57:40 +0200
commitfc4abee8112ada7b1b66017f620d3de3954759f3 (patch)
treec75b9e248960dc64502cd659f7206bf8b0510aa8 /sound
parent51e9f2e665bf2b6a01be275d64c336d942c59a66 (diff)
ALSA: hda - check page continuity
Check the continuity of allocated pages to reduce the BDL size as much as possible so that it can use more than 1MB buffers. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_intel.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index e4d038f423f..4f80248837e 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1012,9 +1012,7 @@ static int setup_bdle(struct snd_pcm_substream *substream,
bdl[0] = cpu_to_le32((u32)addr);
bdl[1] = cpu_to_le32(upper_32_bits(addr));
/* program the size field of the BDL entry */
- chunk = PAGE_SIZE - (ofs % PAGE_SIZE);
- if (size < chunk)
- chunk = size;
+ chunk = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size);
bdl[2] = cpu_to_le32(chunk);
/* program the IOC to enable interrupt
* only when the whole fragment is processed
@@ -1672,7 +1670,7 @@ static int __devinit create_codec_pcm(struct azx *chip, struct hda_codec *codec,
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &azx_pcm_ops);
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(chip->pci),
- 1024 * 64, 1024 * 1024);
+ 1024 * 64, 32 * 1024 * 1024);
chip->pcm[cpcm->device] = pcm;
return 0;
}