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drm/radeon: Always flush VM again on < CIK 

Not doing this causes piglit hangs[0] on my Cape Verde card. No issues on
Bonaire and Kaveri though.

[0] Same symptoms as those fixed on CIK by 'drm/radeon: set VM base addr
using the PFP v2'.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2014-08-07 16:46:56 +09:00 committed by Alex Deucher
parent 68b1ea30e4
commit 6f28ef4797
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/radeon/radeon_vm.c
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@ -238,7 +238,9 @@ void radeon_vm_flush(struct radeon_device *rdev,
uint64_t pd_addr = radeon_bo_gpu_offset(vm->page_directory);
/* if we can't remember our last VM flush then flush now! */
if (!vm->last_flush || pd_addr != vm->pd_gpu_addr) {
/* XXX figure out why we have to flush all the time before CIK */
if (rdev->family < CHIP_BONAIRE ||
!vm->last_flush || pd_addr != vm->pd_gpu_addr) {
trace_radeon_vm_flush(pd_addr, ring, vm->id);
vm->pd_gpu_addr = pd_addr;
radeon_ring_vm_flush(rdev, ring, vm);