[PATCH i-g-t v3 02/10] tests/intel/xe_svm: basic xe-basic test

[Zeng, Oak]

Reviewed-by: Oak Zeng <oak.zeng at intel.com>

> -----Original Message-----
> From: Bommu, Krishnaiah <krishnaiah.bommu at intel.com>
> Sent: Friday, May 17, 2024 7:47 AM
> To: igt-dev at lists.freedesktop.org
> Cc: Bommu, Krishnaiah <krishnaiah.bommu at intel.com>; Zeng, Oak
> <oak.zeng at intel.com>; Ghimiray, Himal Prasad
> <himal.prasad.ghimiray at intel.com>
> Subject: [PATCH i-g-t v3 02/10] tests/intel/xe_svm: basic xe-basic test
> 
> Add basic test to validate helper functions introduced in
> 'lib/xe/xe_util: helper function'. This test writes values
> to the destination buffer using GPU (MI_STORE_DWORD_IMM_GEN4).
> 
> Signed-off-by: Bommu Krishnaiah <krishnaiah.bommu at intel.com>
> Cc: Oak Zeng <oak.zeng at intel.com>
> Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
> ---
>  tests/intel/xe_svm.c | 99 ++++++++++++++++++++++++++++++++++++++++++++
>  tests/meson.build    |  1 +
>  2 files changed, 100 insertions(+)
>  create mode 100644 tests/intel/xe_svm.c
> 
> diff --git a/tests/intel/xe_svm.c b/tests/intel/xe_svm.c
> new file mode 100644
> index 000000000..6302af95b
> --- /dev/null
> +++ b/tests/intel/xe_svm.c
> @@ -0,0 +1,99 @@
> +// SPDX-License-Identifier: MIT
> + /*
> +  * Copyright © 2024 Intel Corporation
> +  */
> +
> +/** @file xe_svm.c
> + *
> + * Test shared virtual memory.
> + *
> + * Shared virtual memory (SVM) is a xe driver feature
> + * which provide shared virtual address space b/t CPU and GPU
> + * program. This means application writer can just malloc or mmap,
> + * and use the returned ptr for both CPU and GPU program.
> + */
> +
> +/**
> + * TEST: xe-svm
> + * Description: Test shared virtual memory
> + * Sub-category: Memory management
> + * Functionality: svm
> + *
> + * SUBTEST: xe-basic
> + * Description: Basic test to verify store dword functionality using helper
> functions
> + */
> +
> +#include <fcntl.h>
> +#include <string.h>
> +
> +#include "igt.h"
> +#include "lib/igt_syncobj.h"
> +#include "lib/intel_reg.h"
> +#include "lib/xe/xe_util.h"
> +#include "xe_drm.h"
> +
> +#include "xe/xe_ioctl.h"
> +#include "xe/xe_query.h"
> +
> +/**
> + *  @brief Verifies basic workload execution on the GPU.
> + *
> + * This function tests writing a value to a GPU buffer using the helper functions
> + * for command submission and buffer management.
> + */
> +static void xe_basic(int fd, uint32_t vm, struct drm_xe_engine_class_instance
> *eci)
> +{
> +	uint64_t gpu_va = 0x1a0000;
> +	uint32_t val = 0xc0ffee;
> +	size_t bo_size = xe_bb_size(fd, PAGE_ALIGN_UFENCE);
> +
> +	struct xe_buffer dst_buf = {
> +		.fd = fd,
> +		.gpu_addr = (void *)(uintptr_t)gpu_va,
> +		.vm = vm,
> +		.size = bo_size,
> +		.placement = vram_if_possible(fd, eci->gt_id),
> +		.flag = DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM,
> +	};
> +
> +	struct xe_buffer cmd_buf = {
> +		.fd = fd,
> +		.gpu_addr = (void *)(uintptr_t)gpu_va + bo_size,
> +		.vm = vm,
> +		.size = bo_size,
> +		.placement = vram_if_possible(fd, eci->gt_id),
> +		.flag = DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM,
> +	};
> +
> +	xe_create_buffer(&dst_buf);
> +	xe_create_cmdbuf(&cmd_buf, insert_store, (uint64_t)dst_buf.gpu_addr,
> val, eci);
> +	xe_submit_cmd(&cmd_buf);
> +
> +	igt_assert_eq(*(uint32_t *)dst_buf.cpu_addr, val);
> +
> +	xe_destroy_cmdbuf(&cmd_buf);
> +	xe_destroy_buffer(&dst_buf);
> +}
> +
> +igt_main
> +{
> +	int fd;
> +	uint32_t vm;
> +	struct drm_xe_engine_class_instance *hwe;
> +
> +	igt_fixture {
> +		fd = drm_open_driver(DRIVER_XE);
> +		igt_require(xe_supports_faults(fd));
> +		vm = xe_vm_create(fd, DRM_XE_VM_CREATE_FLAG_LR_MODE
> | DRM_XE_VM_CREATE_FLAG_FAULT_MODE, 0);
> +	}
> +
> +	igt_subtest_f("xe-basic")
> +		xe_for_each_engine(fd, hwe)
> +			xe_basic(fd, vm, hwe);
> +
> +	igt_fixture {
> +		xe_vm_destroy(fd, vm);
> +		drm_close_driver(fd);
> +	}
> +}
> +
> diff --git a/tests/meson.build b/tests/meson.build
> index 758ae090c..be792a4fd 100644
> --- a/tests/meson.build
> +++ b/tests/meson.build
> @@ -314,6 +314,7 @@ intel_xe_progs = [
>  	'xe_vm',
>  	'xe_waitfence',
>  	'xe_spin_batch',
> +	'xe_svm',
>  	'xe_sysfs_defaults',
>  	'xe_sysfs_scheduler',
>  ]
> --
> 2.25.1