drm/nouveau: Simplify tile region handling.
Instead of emptying the caches to avoid a race with the PFIFO puller,
go straight ahead and try to recover from it when it happens. Also,
kill pfifo->cache_flush and tile->lock, we don't need them anymore.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_reg.h b/drivers/gpu/drm/nouveau/nouveau_reg.h
index 4b81328..1b42541 100644
--- a/drivers/gpu/drm/nouveau/nouveau_reg.h
+++ b/drivers/gpu/drm/nouveau/nouveau_reg.h
@@ -551,6 +551,8 @@
#define NV10_PFIFO_CACHE1_DMA_SUBROUTINE 0x0000324C
#define NV03_PFIFO_CACHE1_PULL0 0x00003240
#define NV04_PFIFO_CACHE1_PULL0 0x00003250
+# define NV04_PFIFO_CACHE1_PULL0_HASH_FAILED 0x00000010
+# define NV04_PFIFO_CACHE1_PULL0_HASH_BUSY 0x00001000
#define NV03_PFIFO_CACHE1_PULL1 0x00003250
#define NV04_PFIFO_CACHE1_PULL1 0x00003254
#define NV04_PFIFO_CACHE1_HASH 0x00003258