On Fri, Aug 1, 2014 at 2:05 PM, Andreas Boll <andreas.boll.dev@xxxxxxxxx> wrote:
> From: Alex Deucher <alexander.deucher@xxxxxxx>
>
> Older firmware didn't support the new nop packet.
>
> v2 (Andreas Boll):
> - Drop usage of packet3 for new firmware
>
> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> Reviewed-by: Christian König <christian.koenig@xxxxxxx> (v1)
> Signed-off-by: Andreas Boll <andreas.boll.dev@xxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
Added the series to my 3.17 tree. thanks!
Alex
> ---
> drivers/gpu/drm/radeon/cik.c | 13 ++++++++++---
> 1 file changed, 10 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
> index c0ea661..e5985d5 100644
> --- a/drivers/gpu/drm/radeon/cik.c
> +++ b/drivers/gpu/drm/radeon/cik.c
> @@ -7900,6 +7900,7 @@ restart_ih:
> static int cik_startup(struct radeon_device *rdev)
> {
> struct radeon_ring *ring;
> + u32 nop;
> int r;
>
> /* enable pcie gen2/3 link */
> @@ -8033,9 +8034,15 @@ static int cik_startup(struct radeon_device *rdev)
> }
> cik_irq_set(rdev);
>
> + if (rdev->family == CHIP_HAWAII) {
> + nop = RADEON_CP_PACKET2;
> + } else {
> + nop = PACKET3(PACKET3_NOP, 0x3FFF);
> + }
> +
> ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
> r = radeon_ring_init(rdev, ring, ring->ring_size, RADEON_WB_CP_RPTR_OFFSET,
> - PACKET3(PACKET3_NOP, 0x3FFF));
> + nop);
> if (r)
> return r;
>
> @@ -8043,7 +8050,7 @@ static int cik_startup(struct radeon_device *rdev)
> /* type-2 packets are deprecated on MEC, use type-3 instead */
> ring = &rdev->ring[CAYMAN_RING_TYPE_CP1_INDEX];
> r = radeon_ring_init(rdev, ring, ring->ring_size, RADEON_WB_CP1_RPTR_OFFSET,
> - PACKET3(PACKET3_NOP, 0x3FFF));
> + nop);
> if (r)
> return r;
> ring->me = 1; /* first MEC */
> @@ -8054,7 +8061,7 @@ static int cik_startup(struct radeon_device *rdev)
> /* type-2 packets are deprecated on MEC, use type-3 instead */
> ring = &rdev->ring[CAYMAN_RING_TYPE_CP2_INDEX];
> r = radeon_ring_init(rdev, ring, ring->ring_size, RADEON_WB_CP2_RPTR_OFFSET,
> - PACKET3(PACKET3_NOP, 0x3FFF));
> + nop);
> if (r)
> return r;
> /* dGPU only have 1 MEC */
> --
> 2.0.1
>
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