From: Michel Dänzer <michel.daenzer@xxxxxxx>
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@xxxxxxx>
---
drivers/gpu/drm/radeon/radeon_vm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index ccae4d9..898cbb7 100644
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -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);
--
2.0.1
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