On Tue, Oct 16, 2012 at 5:02 AM, Christian König <deathsimple@xxxxxxxxxxx> wrote: > Otherwise the next IB might start reading commands > with the page table still invalid. > > Signed-off-by: Christian König <deathsimple@xxxxxxxxxxx> Looks good to me. I'll add it to my -fixes queue. Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx> > --- > drivers/gpu/drm/radeon/ni.c | 4 ++++ > drivers/gpu/drm/radeon/nid.h | 1 + > drivers/gpu/drm/radeon/si.c | 4 ++++ > 3 files changed, 9 insertions(+) > > diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c > index 8c74c72..19b7fe1 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) > /* bits 0-7 are the VM contexts0-7 */ > radeon_ring_write(ring, PACKET0(VM_INVALIDATE_REQUEST, 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); > } > diff --git a/drivers/gpu/drm/radeon/nid.h b/drivers/gpu/drm/radeon/nid.h > index 2423d1b..cbef681 100644 > --- a/drivers/gpu/drm/radeon/nid.h > +++ b/drivers/gpu/drm/radeon/nid.h > @@ -502,6 +502,7 @@ > #define PACKET3_MPEG_INDEX 0x3A > #define PACKET3_WAIT_REG_MEM 0x3C > #define PACKET3_MEM_WRITE 0x3D > +#define PACKET3_PFP_SYNC_ME 0x42 > #define PACKET3_SURFACE_SYNC 0x43 > # define PACKET3_CB0_DEST_BASE_ENA (1 << 6) > # define PACKET3_CB1_DEST_BASE_ENA (1 << 7) > diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c > index df8dd77..da184de 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); > } > > /* > -- > 1.7.9.5 > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
