[PATCH v3 6/8] drm/etnaviv: split out starting of FE idle loop

[Guido Günther]

Hi,
On Fri, Aug 09, 2019 at 02:04:22PM +0200, Lucas Stach wrote:
> Move buffer setup and starting of the FE loop in the kernel ringbuffer
> into a separate function. This is a preparation to start the FE later
> in the submit process.
> 
> Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
> Reviewed-by: Philipp Zabel <p.zabel at pengutronix.de>

Reviewed-by: Guido Günther <agx at sigxcpu.org>

> ---
>  drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 26 ++++++++++++++++----------
>  1 file changed, 16 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> index 885ca8f92338..3af72a4127b0 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> @@ -600,6 +600,20 @@ void etnaviv_gpu_start_fe(struct etnaviv_gpu *gpu, u32 address, u16 prefetch)
>  	}
>  }
>  
> +static void etnaviv_gpu_start_fe_idleloop(struct etnaviv_gpu *gpu)
> +{
> +	u32 address = etnaviv_cmdbuf_get_va(&gpu->buffer, &gpu->cmdbuf_mapping);
> +	u16 prefetch;
> +
> +	/* setup the MMU */
> +	etnaviv_iommu_restore(gpu, gpu->mmu_context);
> +
> +	/* Start command processor */
> +	prefetch = etnaviv_buffer_init(gpu);
> +
> +	etnaviv_gpu_start_fe(gpu, address, prefetch);
> +}
> +
>  static void etnaviv_gpu_setup_pulse_eater(struct etnaviv_gpu *gpu)
>  {
>  	/*
> @@ -633,8 +647,6 @@ static void etnaviv_gpu_setup_pulse_eater(struct etnaviv_gpu *gpu)
>  
>  static void etnaviv_gpu_hw_init(struct etnaviv_gpu *gpu)
>  {
> -	u16 prefetch;
> -
>  	if ((etnaviv_is_model_rev(gpu, GC320, 0x5007) ||
>  	     etnaviv_is_model_rev(gpu, GC320, 0x5220)) &&
>  	    gpu_read(gpu, VIVS_HI_CHIP_TIME) != 0x2062400) {
> @@ -680,15 +692,9 @@ static void etnaviv_gpu_hw_init(struct etnaviv_gpu *gpu)
>  	/* setup the pulse eater */
>  	etnaviv_gpu_setup_pulse_eater(gpu);
>  
> -	/* setup the MMU */
> -	etnaviv_iommu_restore(gpu, gpu->mmu_context);
> -
> -	/* Start command processor */
> -	prefetch = etnaviv_buffer_init(gpu);
> -
>  	gpu_write(gpu, VIVS_HI_INTR_ENBL, ~0U);
> -	etnaviv_gpu_start_fe(gpu, etnaviv_cmdbuf_get_va(&gpu->buffer,
> -			     &gpu->cmdbuf_mapping), prefetch);
> +
> +	etnaviv_gpu_start_fe_idleloop(gpu);
>  }
>  
>  int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
> -- 
> 2.20.1
> 
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