On Fri, Jan 11, 2013 at 3:19 PM, <j.glisse@xxxxxxxxx> wrote:
> From: Jerome Glisse <jglisse@xxxxxxxxxx>
>
> Signed-off-by: Jerome Glisse <jglisse@xxxxxxxxxx>
Added to my -fixes queue.
Alex
> ---
> drivers/gpu/drm/radeon/radeon.h | 2 ++
> drivers/gpu/drm/radeon/radeon_ring.c | 2 ++
> drivers/gpu/drm/radeon/radeon_semaphore.c | 4 ++++
> 3 files changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
> index 9b9422c..f0bb8d5 100644
> --- a/drivers/gpu/drm/radeon/radeon.h
> +++ b/drivers/gpu/drm/radeon/radeon.h
> @@ -649,6 +649,8 @@ struct radeon_ring {
> u32 ptr_reg_mask;
> u32 nop;
> u32 idx;
> + u64 last_semaphore_signal_addr;
> + u64 last_semaphore_wait_addr;
> };
>
> /*
> diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
> index 141f2b6..2430d80 100644
> --- a/drivers/gpu/drm/radeon/radeon_ring.c
> +++ b/drivers/gpu/drm/radeon/radeon_ring.c
> @@ -784,6 +784,8 @@ static int radeon_debugfs_ring_info(struct seq_file *m, void *data)
> }
> seq_printf(m, "driver's copy of the wptr: 0x%08x [%5d]\n", ring->wptr, ring->wptr);
> seq_printf(m, "driver's copy of the rptr: 0x%08x [%5d]\n", ring->rptr, ring->rptr);
> + seq_printf(m, "last semaphore signal addr : 0x%016llx\n", ring->last_semaphore_signal_addr);
> + seq_printf(m, "last semaphore wait addr : 0x%016llx\n", ring->last_semaphore_wait_addr);
> seq_printf(m, "%u free dwords in ring\n", ring->ring_free_dw);
> seq_printf(m, "%u dwords in ring\n", count);
> /* print 8 dw before current rptr as often it's the last executed
> diff --git a/drivers/gpu/drm/radeon/radeon_semaphore.c b/drivers/gpu/drm/radeon/radeon_semaphore.c
> index 97f3ece..8dcc20f 100644
> --- a/drivers/gpu/drm/radeon/radeon_semaphore.c
> +++ b/drivers/gpu/drm/radeon/radeon_semaphore.c
> @@ -95,6 +95,10 @@ int radeon_semaphore_sync_rings(struct radeon_device *rdev,
> /* we assume caller has already allocated space on waiters ring */
> radeon_semaphore_emit_wait(rdev, waiter, semaphore);
>
> + /* for debugging lockup only, used by sysfs debug files */
> + rdev->ring[signaler].last_semaphore_signal_addr = semaphore->gpu_addr;
> + rdev->ring[waiter].last_semaphore_wait_addr = semaphore->gpu_addr;
> +
> return 0;
> }
>
> --
> 1.7.11.7
>
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