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drm/radeon: switch back to the CP ring for VM PT updates

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For large VM page table updates, we can sometimes generate
more packets than there is space on the ring.  This happens
more readily with the DMA ring since it is 64K (vs 1M for the
CP).  For now, switch back to the CP.  For the next kernel,
I have a patch to utilize IBs for VM PT updates which
alleviates this problem.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=58354

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-01-31 16:19:19 -05:00
parent fd5d93a001
commit 3646e4209f
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/radeon/radeon_asic.c
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@ -1445,7 +1445,7 @@ static struct radeon_asic cayman_asic = {
.vm = {
.init = &cayman_vm_init,
.fini = &cayman_vm_fini,
.pt_ring_index = R600_RING_TYPE_DMA_INDEX,
.pt_ring_index = RADEON_RING_TYPE_GFX_INDEX,
.set_page = &cayman_vm_set_page,
},
.ring = {
@ -1572,7 +1572,7 @@ static struct radeon_asic trinity_asic = {
.vm = {
.init = &cayman_vm_init,
.fini = &cayman_vm_fini,
.pt_ring_index = R600_RING_TYPE_DMA_INDEX,
.pt_ring_index = RADEON_RING_TYPE_GFX_INDEX,
.set_page = &cayman_vm_set_page,
},
.ring = {
@ -1699,7 +1699,7 @@ static struct radeon_asic si_asic = {
.vm = {
.init = &si_vm_init,
.fini = &si_vm_fini,
.pt_ring_index = R600_RING_TYPE_DMA_INDEX,
.pt_ring_index = RADEON_RING_TYPE_GFX_INDEX,
.set_page = &si_vm_set_page,
},
.ring = {