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Commit fc4abee8 authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
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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: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
parent 51e9f2e6

sound/pci/hda/hda_intel.c

+2 −4
Original line number Diff line number Diff line
@@ -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;

}