ALSA: hda - Move snd page allocation to ops

Break out the allocation of pages for DMA and PCM buffers to ops in
the chip structure.  This is done to allow for architecture specific
work-arounds to be added.  Currently mark_pages_wc is used by
hda_intel.  This avoids needing to move that x86-specific code to a
common area shared with hda platform drivers.

Signed-off-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 11 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_priv.h b/sound/pci/hda/hda_priv.h
index 0a56e8e18a5a..10bcec127319 100644
--- a/sound/pci/hda/hda_priv.h
+++ b/sound/pci/hda/hda_priv.h
@@ -298,6 +298,17 @@ struct hda_controller_ops {
         u8 (*readb)(u8 *addr);
         /* Disable msi if supported, PCI only */
         int (*disable_msi_reset_irq)(struct azx *);
+        /* Allocation ops */
+        int (*dma_alloc_pages)(struct azx *chip,
+                               int type,
+                               size_t size,
+                               struct snd_dma_buffer *buf);
+        void (*dma_free_pages)(struct azx *chip, struct snd_dma_buffer *buf);
+        int (*substream_alloc_pages)(struct azx *chip,
+                                     struct snd_pcm_substream *substream,
+                                     size_t size);
+        int (*substream_free_pages)(struct azx *chip,
+                                    struct snd_pcm_substream *substream);
 };
 
 struct azx_pcm {