[PATCH] radeon: pad IB to 4 DWs on r6xx asics

[Michel Dänzer]

On Mit, 2013-09-04 at 18:21 -0400, Alex Deucher wrote:
> Works around a hw bug.
> 
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
>  src/radeon_kms.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/src/radeon_kms.c b/src/radeon_kms.c
> index 82e88d4..bf44b63 100644
> --- a/src/radeon_kms.c
> +++ b/src/radeon_kms.c
> @@ -100,6 +100,13 @@ void radeon_cs_flush_indirect(ScrnInfoPtr pScrn)
>          info->accel_state->cbuf.vb_start_op = -1;
>      }
>  
> +    /* pad the IB to a multiple of 4 dwords for r6xx */
> +    if ((info->ChipFamily >= CHIP_FAMILY_R600) &&
> +	(info->ChipFamily <= CHIP_FAMILY_RS880)) {
> +	while (info->cs->cdw & 3)
> +	    radeon_cs_write_dword(info->cs, 0x80000000);
> +    }
> +
>      radeon_cs_emit(info->cs);
>      radeon_cs_erase(info->cs);
>  

Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer