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>
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index e4d038f..4f80248 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1012,9 +1012,7 @@
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 @@
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;
}