* [PATCH] drm/radeon: fix PFP sync in vm_flush
@ 2012-10-16 9:02 Christian König
2012-10-16 12:45 ` Alex Deucher
0 siblings, 1 reply; 2+ messages in thread
From: Christian König @ 2012-10-16 9:02 UTC (permalink / raw)
To: alexdeucher; +Cc: dri-devel
Otherwise the next IB might start reading commands
with the page table still invalid.
Signed-off-by: Christian König <deathsimple@vodafone.de>
---
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@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drm/radeon: fix PFP sync in vm_flush
2012-10-16 9:02 [PATCH] drm/radeon: fix PFP sync in vm_flush Christian König
@ 2012-10-16 12:45 ` Alex Deucher
0 siblings, 0 replies; 2+ messages in thread
From: Alex Deucher @ 2012-10-16 12:45 UTC (permalink / raw)
To: Christian König; +Cc: dri-devel
On Tue, Oct 16, 2012 at 5:02 AM, Christian König
<deathsimple@vodafone.de> wrote:
> Otherwise the next IB might start reading commands
> with the page table still invalid.
>
> Signed-off-by: Christian König <deathsimple@vodafone.de>
Looks good to me. I'll add it to my -fixes queue.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> 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
>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2012-10-16 12:45 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-10-16 9:02 [PATCH] drm/radeon: fix PFP sync in vm_flush Christian König
2012-10-16 12:45 ` Alex Deucher
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.