Re: [PATCH 01/59] drm/vmwgfx: consolidate ttm object creation and populate

[daniel@ffwll.ch]

On Tue, Aug 04, 2020 at 12:55:34PM +1000, Dave Airlie wrote:
> From: Dave Airlie <airlied@redhat.com>
> 
> These two functions has the same code in them, create a common
> helper function instead.
> 
> Signed-off-by: Dave Airlie <airlied@redhat.com>
> ---
>  drivers/gpu/drm/vmwgfx/vmwgfx_drv.h        |  4 ++
>  drivers/gpu/drm/vmwgfx/vmwgfx_mob.c        | 60 ++--------------------
>  drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 32 ++++++++++++
>  3 files changed, 39 insertions(+), 57 deletions(-)
> 
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
> index 3596f3923ea3..b7c763713b4c 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
> @@ -1023,6 +1023,10 @@ extern int vmw_bo_map_dma(struct ttm_buffer_object *bo);
>  extern void vmw_bo_unmap_dma(struct ttm_buffer_object *bo);
>  extern const struct vmw_sg_table *
>  vmw_bo_sg_table(struct ttm_buffer_object *bo);
> +extern int vmw_bo_create_and_populate(struct vmw_private *dev_priv,
> +				      unsigned long bo_size,
> +				      struct ttm_buffer_object **bo_p);
> +
>  extern void vmw_piter_start(struct vmw_piter *viter,
>  			    const struct vmw_sg_table *vsgt,
>  			    unsigned long p_offs);
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_mob.c b/drivers/gpu/drm/vmwgfx/vmwgfx_mob.c
> index e8eb42933ca2..7f95ed6aa224 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_mob.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_mob.c
> @@ -238,10 +238,6 @@ static int vmw_otable_batch_setup(struct vmw_private *dev_priv,
>  	unsigned long offset;
>  	unsigned long bo_size;
>  	struct vmw_otable *otables = batch->otables;
> -	struct ttm_operation_ctx ctx = {
> -		.interruptible = false,
> -		.no_wait_gpu = false
> -	};
>  	SVGAOTableType i;
>  	int ret;
>  
> @@ -255,24 +251,9 @@ static int vmw_otable_batch_setup(struct vmw_private *dev_priv,
>  		bo_size += otables[i].size;
>  	}
>  
> -	ret = ttm_bo_create(&dev_priv->bdev, bo_size,
> -			    ttm_bo_type_device,
> -			    &vmw_sys_ne_placement,
> -			    0, false, &batch->otable_bo);
> -
> -	if (unlikely(ret != 0))
> -		goto out_no_bo;
> -
> -	ret = ttm_bo_reserve(batch->otable_bo, false, true, NULL);
> -	BUG_ON(ret != 0);
> -	ret = vmw_bo_driver.ttm_tt_populate(batch->otable_bo->ttm, &ctx);
> -	if (unlikely(ret != 0))
> -		goto out_unreserve;
> -	ret = vmw_bo_map_dma(batch->otable_bo);
> +	ret = vmw_bo_create_and_populate(dev_priv, bo_size, &batch->otable_bo);
>  	if (unlikely(ret != 0))
> -		goto out_unreserve;
> -
> -	ttm_bo_unreserve(batch->otable_bo);
> +		return ret;
>  
>  	offset = 0;
>  	for (i = 0; i < batch->num_otables; ++i) {
> @@ -289,8 +270,6 @@ static int vmw_otable_batch_setup(struct vmw_private *dev_priv,
>  
>  	return 0;
>  
> -out_unreserve:
> -	ttm_bo_unreserve(batch->otable_bo);
>  out_no_setup:
>  	for (i = 0; i < batch->num_otables; ++i) {
>  		if (batch->otables[i].enabled)
> @@ -300,7 +279,6 @@ static int vmw_otable_batch_setup(struct vmw_private *dev_priv,
>  
>  	ttm_bo_put(batch->otable_bo);
>  	batch->otable_bo = NULL;
> -out_no_bo:
>  	return ret;
>  }
>  
> @@ -432,41 +410,9 @@ struct vmw_mob *vmw_mob_create(unsigned long data_pages)
>  static int vmw_mob_pt_populate(struct vmw_private *dev_priv,
>  			       struct vmw_mob *mob)
>  {
> -	int ret;
> -	struct ttm_operation_ctx ctx = {
> -		.interruptible = false,
> -		.no_wait_gpu = false
> -	};
> -
>  	BUG_ON(mob->pt_bo != NULL);
>  
> -	ret = ttm_bo_create(&dev_priv->bdev, mob->num_pages * PAGE_SIZE,
> -			    ttm_bo_type_device,
> -			    &vmw_sys_ne_placement,
> -			    0, false, &mob->pt_bo);
> -	if (unlikely(ret != 0))
> -		return ret;
> -
> -	ret = ttm_bo_reserve(mob->pt_bo, false, true, NULL);
> -
> -	BUG_ON(ret != 0);
> -	ret = vmw_bo_driver.ttm_tt_populate(mob->pt_bo->ttm, &ctx);
> -	if (unlikely(ret != 0))
> -		goto out_unreserve;
> -	ret = vmw_bo_map_dma(mob->pt_bo);
> -	if (unlikely(ret != 0))
> -		goto out_unreserve;
> -
> -	ttm_bo_unreserve(mob->pt_bo);
> -
> -	return 0;
> -
> -out_unreserve:
> -	ttm_bo_unreserve(mob->pt_bo);
> -	ttm_bo_put(mob->pt_bo);
> -	mob->pt_bo = NULL;
> -
> -	return ret;
> +	return vmw_bo_create_and_populate(dev_priv, mob->num_pages * PAGE_SIZE, &mob->pt_bo);
>  }
>  
>  /**
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
> index 2deaaed334e6..8e2a82ded900 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
> @@ -817,3 +817,35 @@ struct ttm_bo_driver vmw_bo_driver = {
>  	.swap_notify = vmw_swap_notify,
>  	.io_mem_reserve = &vmw_ttm_io_mem_reserve,
>  };
> +
> +int vmw_bo_create_and_populate(struct vmw_private *dev_priv,
> +			       unsigned long bo_size,
> +			       struct ttm_buffer_object **bo_p)
> +{
> +	struct ttm_operation_ctx ctx = {
> +		.interruptible = false,
> +		.no_wait_gpu = false
> +	};
> +	struct ttm_buffer_object *bo;
> +	int ret;
> +
> +	ret = ttm_bo_create(&dev_priv->bdev, bo_size,
> +			    ttm_bo_type_device,
> +			    &vmw_sys_ne_placement,
> +			    0, false, &bo);
> +
> +	if (unlikely(ret != 0))
> +		return ret;
> +
> +	ret = ttm_bo_reserve(bo, false, true, NULL);
> +	BUG_ON(ret != 0);
> +	ret = vmw_bo_driver.ttm_tt_populate(bo->ttm, &ctx);
> +	if (likely(ret == 0))
> +		ret = vmw_bo_map_dma(bo);
> +
> +	ttm_bo_unreserve(bo);
> +
> +	if (likely(ret == 0))
> +		*bo_p = bo;
> +	return ret;
> +}

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

> -- 
> 2.26.2
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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