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drm/radeon: allow semaphore emission to fail

Browse source 
To workaround bugs and/or certain limits it's sometimes
useful to fall back to waiting on fences.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Christian König 2013-11-12 12:58:05 +01:00 • committed by Alex Deucher
parent bd80c8ba99
commit 1654b817d8
17 changed files with 194 additions and 150 deletions
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13
drivers/gpu/drm/radeon/r600.c
View file

@ -2650,7 +2650,7 @@ void r600_fence_ring_emit(struct radeon_device *rdev,
}
}
void r600_semaphore_ring_emit(struct radeon_device *rdev,
bool r600_semaphore_ring_emit(struct radeon_device *rdev,
struct radeon_ring *ring,
struct radeon_semaphore *semaphore,
bool emit_wait)
@ -2664,6 +2664,8 @@ void r600_semaphore_ring_emit(struct radeon_device *rdev,
radeon_ring_write(ring, PACKET3(PACKET3_MEM_SEMAPHORE, 1));
radeon_ring_write(ring, addr & 0xffffffff);
radeon_ring_write(ring, (upper_32_bits(addr) & 0xff) | sel);
return true;
}
/**
@ -2706,13 +2708,8 @@ int r600_copy_cpdma(struct radeon_device *rdev,
return r;
}
if (radeon_fence_need_sync(*fence, ring->idx)) {
radeon_semaphore_sync_rings(rdev, sem, (*fence)->ring,
ring->idx);
radeon_fence_note_sync(*fence, ring->idx);
} else {
radeon_semaphore_free(rdev, &sem, NULL);
}
radeon_semaphore_sync_to(sem, *fence);
radeon_semaphore_sync_rings(rdev, sem, ring->idx);
radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
radeon_ring_write(ring, (WAIT_UNTIL - PACKET3_SET_CONFIG_REG_OFFSET) >> 2);