[igt-dev] [PATCH i-g-t 2/2] tests/i915/gem_ccs: Add suspend-resume subtest

[Kamil Konieczny]

Hi,

Dnia 2022-03-18 at 08:30:18 +0100, Zbigniew Kempczyński napisał(a):
> From: Apoorva Singh <apoorva1.singh at intel.com>
> 
> Verify flatccs data won't be corrupted when device will be put
> to S0 (s2idle) state.
> 
> Signed-off-by: Apoorva Singh <apoorva1.singh at intel.com>
> Cc: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
> ---
>  tests/i915/gem_ccs.c | 45 +++++++++++++++++++++++++++++++++++++++-----
>  1 file changed, 40 insertions(+), 5 deletions(-)
> 
> diff --git a/tests/i915/gem_ccs.c b/tests/i915/gem_ccs.c
> index 7e104f6ad8..eaa8e043b0 100644
> --- a/tests/i915/gem_ccs.c
> +++ b/tests/i915/gem_ccs.c
> @@ -4,6 +4,7 @@
>   */
>  
>  #include <errno.h>
> +#include <glib.h>
>  #include <sys/ioctl.h>
>  #include <sys/time.h>
>  #include <malloc.h>
> @@ -40,6 +41,7 @@ struct test_config {
>  	bool inplace;
>  	bool surfcopy;
>  	bool new_ctx;
> +	bool suspend_resume;
>  };
>  
>  static void set_object(struct blt_copy_object *obj,
> @@ -162,22 +164,24 @@ static void surf_copy(int i915,
>  		      const struct blt_copy_object *src,
>  		      const struct blt_copy_object *mid,
>  		      const struct blt_copy_object *dst,
> -		      int run_id)
> +		      int run_id, bool suspend_resume)
>  {
>  	struct blt_copy_data blt = {};
>  	struct blt_block_copy_data_ext ext = {};
>  	struct blt_ctrl_surf_copy_data surf = {};
> -	uint32_t bb, ccs, *ccsmap;
> -	uint64_t bb_size = 4096;

Please keep it here so number of changes will be lower.

> -	uint64_t ccssize = mid->size / CCS_RATIO;
> +	uint32_t bb, ccs, ccs2, *ccsmap, *ccsmap2;
> +	uint64_t bb_size, ccssize = mid->size / CCS_RATIO;

No need to move bb_size here.

>  	uint32_t *ccscopy;
>  	uint8_t uc_mocs = intel_get_uc_mocs(i915);
>  	int result;
> +	char *orig, *orig2, *new, *new2;

These are used only in suspend_resume block, so move it there.

>  
>  	igt_assert(mid->compression);
>  	ccscopy = (uint32_t *) malloc(ccssize);
> +	bb_size = 4096;

May be removed (if you keep it above).

>  	bb = gem_create_from_pool(i915, &bb_size, REGION_SMEM);
>  	ccs = gem_create(i915, ccssize);
> +	ccs2 = gem_create(i915, ccssize);
>  
>  	surf.i915 = i915;
>  	surf.print_bb = param.print_bb;
> @@ -193,6 +197,27 @@ static void surf_copy(int i915,
>  					   PROT_READ | PROT_WRITE);
>  	memcpy(ccscopy, ccsmap, ccssize);
>  
> +	if (suspend_resume) {
> +		orig = g_compute_checksum_for_data(G_CHECKSUM_SHA1, (void *)ccsmap, surf.dst.size);
> +		orig2 = g_compute_checksum_for_data(G_CHECKSUM_SHA1, (void *)mid->ptr, mid->size);
> +
> +		igt_system_suspend_autoresume(SUSPEND_STATE_FREEZE, SUSPEND_TEST_NONE);
> +
> +		set_surf_object(&surf.dst, ccs2, REGION_SMEM, ccssize,
> +				0, DIRECT_ACCESS);
> +		blt_ctrl_surf_copy(i915, ctx, e, ahnd, &surf);
> +		gem_sync(i915, surf.dst.handle);
> +
> +		ccsmap2 = gem_mmap__device_coherent(i915, ccs2, 0, surf.dst.size,
> +						    PROT_READ | PROT_WRITE);
> +		new = g_compute_checksum_for_data(G_CHECKSUM_SHA1, (void *)ccsmap2, surf.dst.size);
> +		new2 = g_compute_checksum_for_data(G_CHECKSUM_SHA1, (void *)mid->ptr, mid->size);
> +
> +		igt_assert(!strcmp(orig, new));
> +		igt_assert(!strcmp(orig2, new2));

May you rename new and new2 into something meaningfull ? Like
newsum_ccs, newsum_ctrl ? It can help if assert triggers.
Checksums are pointers allocated by g_compute_checksum so they
need to be free after use.

> +		munmap(ccsmap2, ccssize);

Move this before two asserts.

> +	}
> +
>  	/* corrupt ccs */
>  	for (int i = 0; i < surf.dst.size / sizeof(uint32_t); i++)
>  		ccsmap[i] = i;
> @@ -209,6 +234,7 @@ static void surf_copy(int i915,
>  	set_blt_object(&blt.dst, dst);
>  	set_object_ext(&ext.src, mid->compression_type, mid->x2, mid->y2, SURFACE_TYPE_2D);
>  	set_object_ext(&ext.dst, 0, dst->x2, dst->y2, SURFACE_TYPE_2D);
> +	bb_size = 4096;

Looks strange here, remove this.

>  	bb = gem_create_from_pool(i915, &bb_size, REGION_SMEM);
>  	set_batch(&blt.bb, bb, bb_size, REGION_SMEM);
>  	blt_block_copy(i915, ctx, e, ahnd, &blt, &ext);
> @@ -311,7 +337,8 @@ static void block_copy(int i915,
>  							 ALLOC_STRATEGY_LOW_TO_HIGH, 0);
>  		}
>  
> -		surf_copy(i915, surf_ctx, &surf_e, surf_ahnd, src, mid, dst, run_id);
> +		surf_copy(i915, surf_ctx, &surf_e, ahnd, src, mid, dst, run_id,

This should be in first patch ?

Regards,
Kamil

> +			  config->suspend_resume);
>  
>  		if (surf_ctx != ctx) {
>  			intel_ctx_destroy(i915, surf_ctx);
> @@ -508,6 +535,14 @@ igt_main_args("bf:pst:W:H:", NULL, help_str, opt_handler, NULL)
>  		block_copy_test(i915, &config, ctx, set);
>  	}
>  
> +	igt_subtest_with_dynamic("suspend-resume") {
> +		struct test_config config = { .compression = true,
> +					      .surfcopy = true,
> +					      .suspend_resume = true };
> +
> +		block_copy_test(i915, &config, ctx, set);
> +	}
> +
>  	igt_fixture {
>  		igt_disallow_hang(i915, hang);
>  		close(i915);
> -- 
> 2.32.0
>