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| author | Christian König <deathsimple@vodafone.de> | 2012-10-22 17:42:35 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2012-10-23 16:23:50 +0200 |
| commit | 58f8cf56f937840aa3c1416eed29f595159c60a3 (patch) | |
| tree | cba423d1817a072121871db6bf1a7276b2bde375 /drivers/gpu/drm/radeon/si.c | |
| parent | drm/radeon: add error output if VM CS fails on cayman (diff) | |
| download | linux-58f8cf56f937840aa3c1416eed29f595159c60a3.tar.xz linux-58f8cf56f937840aa3c1416eed29f595159c60a3.zip | |
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/si.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/si.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index df8dd7701643..da184de021bd 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -2868,6 +2868,10 @@ void si_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm) radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2); radeon_ring_write(ring, 0); radeon_ring_write(ring, 1 << vm->id); + + /* sync PFP to ME, otherwise we might get invalid PFP reads */ + radeon_ring_write(ring, PACKET3(PACKET3_PFP_SYNC_ME, 0)); + radeon_ring_write(ring, 0x0); } /* |