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drm/radeon: record what is next valid wptr for each ring v4

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Before emitting any indirect buffer, emit the offset of the next
valid ring content if any. This allow code that want to resume
ring to resume ring right after ib that caused GPU lockup.

v2: use scratch registers instead of storing it into memory
v3: skip over the surface sync for ni and si as well
v4: use SET_CONFIG_REG instead of PACKET0

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2012-07-06 16:22:55 +02:00
parent 04eb2206d8
commit 45df68035c
7 changed files with 68 additions and 8 deletions
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1
drivers/gpu/drm/radeon/radeon.h
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@@ -622,6 +622,7 @@ struct radeon_ring {
unsigned rptr;
unsigned rptr_offs;
unsigned rptr_reg;
unsigned rptr_save_reg;
unsigned wptr;
unsigned wptr_old;
unsigned wptr_reg;