[Intel-gfx] [PATCH i-g-t 1/2] tests/kms_pwrite_crc: handle missing get_caching

[Das, Nirmoy]

I was just looking into this :) LGTM Reviewed-by: Nirmoy Das 
<nirmoy.das at intel.com>

On 4/1/2022 1:09 PM, Matthew Auld wrote:
> gem_get_caching is not supported on discrete. The object itself should
> already be coherent with the display engine as-is on such platforms, by
> virtue of the scanout happening via local-memory.
>
> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/4903
> Signed-off-by: Matthew Auld <matthew.auld at intel.com>
> Cc: Nirmoy Das <nirmoy.das at linux.intel.com>
> ---
>   tests/i915/kms_pwrite_crc.c | 12 ++++++++----
>   1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/tests/i915/kms_pwrite_crc.c b/tests/i915/kms_pwrite_crc.c
> index 44fcfadb..584e6a19 100644
> --- a/tests/i915/kms_pwrite_crc.c
> +++ b/tests/i915/kms_pwrite_crc.c
> @@ -50,7 +50,6 @@ static void test(data_t *data)
>   	igt_output_t *output = data->output;
>   	struct igt_fb *fb = &data->fb[1];
>   	drmModeModeInfo *mode;
> -	uint32_t caching;
>   	void *buf;
>   	igt_crc_t crc;
>   
> @@ -76,9 +75,14 @@ static void test(data_t *data)
>   			0, 0, fb->width, fb->height,
>   			0, 0, fb->width << 16, fb->height << 16);
>   
> -	/* make sure caching mode has become UC/WT */
> -	caching = gem_get_caching(data->drm_fd, fb->gem_handle);
> -	igt_assert(caching == I915_CACHING_NONE || caching == I915_CACHING_DISPLAY);
> +	if (!gem_has_lmem(data->drm_fd)) {
> +		uint32_t caching;
> +
> +		/* make sure caching mode has become UC/WT */
> +		caching = gem_get_caching(data->drm_fd, fb->gem_handle);
> +		igt_assert(caching == I915_CACHING_NONE ||
> +			   caching == I915_CACHING_DISPLAY);
> +	}
>   
>   	/* use pwrite to make the other fb all white too */
>   	buf = malloc(fb->size);