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authorChristian König <deathsimple@vodafone.de>2012-10-22 11:42:35 -0400
committerAlex Deucher <alexander.deucher@amd.com>2012-10-23 10:23:50 -0400
commit58f8cf56f937840aa3c1416eed29f595159c60a3 (patch)
treecba423d1817a072121871db6bf1a7276b2bde375 /drivers/gpu/drm/radeon/ni.c
parentc71721324c612f7f040657ce9917d87f530f9784 (diff)
drm/radeon: fix PFP sync in vm_flush
Otherwise the next IB might start reading commands with the page table still invalid. Signed-off-by: Christian König <deathsimple@vodafone.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/ni.c')
-rw-r--r--drivers/gpu/drm/radeon/ni.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 8c74c729586d..19b7fe1248be 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1586,4 +1586,8 @@ void cayman_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
1586 /* bits 0-7 are the VM contexts0-7 */ 1586 /* bits 0-7 are the VM contexts0-7 */
1587 radeon_ring_write(ring, PACKET0(VM_INVALIDATE_REQUEST, 0)); 1587 radeon_ring_write(ring, PACKET0(VM_INVALIDATE_REQUEST, 0));
1588 radeon_ring_write(ring, 1 << vm->id); 1588 radeon_ring_write(ring, 1 << vm->id);
1589
1590 /* sync PFP to ME, otherwise we might get invalid PFP reads */
1591 radeon_ring_write(ring, PACKET3(PACKET3_PFP_SYNC_ME, 0));
1592 radeon_ring_write(ring, 0x0);
1589} 1593}