[PATCH 1/2] drm/amdgpu: Correct bytes limit for SDMA 3.0 copy and fill

[Christian König]

Am 18.09.2017 um 21:18 schrieb Yong Zhao:
> Change-Id: I10fc5efbc303056c5c5c4dc4f4dd2c3186595a91
> Signed-off-by: Yong Zhao <yong.zhao at amd.com>

Reviewed-by: Christian König <christian.koenig at amd.com>

> ---
>   drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
> index 728c0d8..4e7fe07 100644
> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
> @@ -1730,11 +1730,11 @@ static void sdma_v3_0_emit_fill_buffer(struct amdgpu_ib *ib,
>   }
>   
>   static const struct amdgpu_buffer_funcs sdma_v3_0_buffer_funcs = {
> -	.copy_max_bytes = 0x1fffff,
> +	.copy_max_bytes = 0x3fffe0, /* not 0x3fffff due to HW limitation*/
>   	.copy_num_dw = 7,
>   	.emit_copy_buffer = sdma_v3_0_emit_copy_buffer,
>   
> -	.fill_max_bytes = 0x1fffff,
> +	.fill_max_bytes = 0x3fffe0, /* not 0x3fffff due to HW limitation*/
>   	.fill_num_dw = 5,
>   	.emit_fill_buffer = sdma_v3_0_emit_fill_buffer,
>   };