[igt-dev] [PATCH i-g-t] xe_create: create-big-vram subtest

[Kamil Konieczny]

Hi Marcin,
On 2023-11-13 at 20:20:56 +0100, Marcin Bernatowicz wrote:
> Validates the creation of significant Buffer Objects (BO) within VRAM,
> accounting for 75% of the CPU-visible VRAM size.
> The size of the created BO can be adjusted using command line parameters,
> with '-S' representing BO size in MB,
> and '-p' representing BO size as a percentage of the VRAM size.
> 
> Signed-off-by: Marcin Bernatowicz <marcin.bernatowicz at intel.com>

Please rebase and correct flag to DRM_XE_VM_CREATE_FLAG_ASYNC_DEFAULT
(test changed and also there was xe drm-uapi update).

> ---
>  tests/intel/xe_create.c | 79 ++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 78 insertions(+), 1 deletion(-)
> 
> diff --git a/tests/intel/xe_create.c b/tests/intel/xe_create.c
> index d99bd51cf..fc1b23823 100644
> --- a/tests/intel/xe_create.c
> +++ b/tests/intel/xe_create.c
> @@ -18,6 +18,14 @@
>  
>  #define PAGE_SIZE 0x1000
>  
> +static struct param {
> +	int size_MB;
--- ^
unsigned

> +	int vram_percent;
--- ^
unsigned

> +} params = {
> +	.size_MB = 0,
> +	.vram_percent = 75,
> +};
> +
>  static int __create_bo(int fd, uint32_t vm, uint64_t size, uint32_t flags,
>  		       uint32_t *handlep)
>  {
> @@ -207,7 +215,72 @@ static void create_massive_size(int fd)
>  	}
>  }
>  
> -igt_main
> +/**
> + * SUBTEST: create-big-vram
> + * Functionality: BO creation
> + * Test category: functionality test
> + * Description: Validates the creation of substantial BO within VRAM
> + *              (constituting 75% of the CPU-visible VRAM).
> + */
> +static void create_big_vram(int fd)
> +{
> +	uint64_t bo_size, size, vram_size, alignment;
> +	uint32_t bo_handle;
> +	char *bo_ptr = NULL;
> +	uint64_t vm = 0;
> +	int gt;
> +
> +	igt_require(xe_has_vram(fd));
> +	alignment = xe_get_default_alignment(fd);
> +	vm = xe_vm_create(fd, DRM_XE_VM_CREATE_ASYNC_DEFAULT, 0);
> +
> +	xe_for_each_gt(fd, gt) {
> +		vram_size = xe_visible_vram_size(fd, gt);
> +		bo_size = params.size_MB ? params.size_MB * 1024UL * 1024UL

1024ULL

> +					 : ALIGN(vram_size * params.vram_percent / 100, alignment);
> +		igt_debug("gt%u bo_size=%lu visible_vram_size=%lu\n", gt, bo_size, vram_size);
> +
> +		igt_assert_eq(0, __create_bo(fd, vm, bo_size, vram_memory(fd, gt), &bo_handle));
> +		bo_ptr = xe_bo_map(fd, bo_handle, bo_size);
> +		size = bo_size - 1;
> +		while (size > SZ_64K) {
> +			igt_assert_eq(0, READ_ONCE(bo_ptr[size]));
> +			WRITE_ONCE(bo_ptr[size], 'A');
> +			igt_assert_eq('A', READ_ONCE(bo_ptr[size]));
> +			size >>= 1;
> +		}

Add newline here.

Regards,
Kamil

> +		igt_assert_eq(0, bo_ptr[0]);
> +		munmap(bo_ptr, bo_size);
> +		gem_close(fd, bo_handle);
> +	}
> +
> +	xe_vm_destroy(fd, vm);
> +}
> +
> +static int opt_handler(int opt, int opt_index, void *data)
> +{
> +	switch (opt) {
> +	case 'S':
> +		params.size_MB = atoi(optarg);
> +		igt_debug("Size MB: %d\n", params.size_MB);
> +		break;
> +	case 'p':
> +		params.vram_percent = atoi(optarg);
> +		igt_debug("Percent of VRAM: %d\n", params.vram_percent);
> +		break;
> +	default:
> +		return IGT_OPT_HANDLER_ERROR;
> +	}
> +
> +	return IGT_OPT_HANDLER_SUCCESS;
> +}
> +
> +const char *help_str =
> +	"  -S\tBO size in MB\n"
> +	"  -p\tPercent of VRAM for BO (default 75% of visible VRAM size)\n"
> +	;
> +
> +igt_main_args("S:p:", NULL, help_str, opt_handler, NULL)
>  {
>  	int xe;
>  
> @@ -228,6 +301,10 @@ igt_main
>  		create_massive_size(xe);
>  	}
>  
> +	igt_subtest("create-big-vram") {
> +		create_big_vram(xe);
> +	}
> +
>  	igt_fixture
>  		drm_close_driver(xe);
>  }
> -- 
> 2.31.1
>