[igt-dev] [PATCH i-g-t 03/16] Add basic PXP testing of buffer and context alloc
Alan Previn
alan.previn.teres.alexis at intel.com
Fri May 14 06:49:40 UTC 2021
Test PXP capability support as well as the allocation of protected
buffers and protected contexts.
Signed-off-by: Alan Previn <alan.previn.teres.alexis at intel.com>
---
tests/i915/gem_pxp.c | 366 +++++++++++++++++++++++++++++++++++++++++++
tests/meson.build | 1 +
2 files changed, 367 insertions(+)
create mode 100644 tests/i915/gem_pxp.c
diff --git a/tests/i915/gem_pxp.c b/tests/i915/gem_pxp.c
new file mode 100644
index 00000000..6340daae
--- /dev/null
+++ b/tests/i915/gem_pxp.c
@@ -0,0 +1,366 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include <sys/ioctl.h>
+
+#include "igt.h"
+#include "i915/gem.h"
+
+IGT_TEST_DESCRIPTION("Test PXP that manages protected content through arbitrated HW-PXP-session");
+/* Note: PXP = "Protected Xe Path" */
+
+/* test-configs for protected buffer creation*/
+#define BO_ALLOC_NO_HW_SUPPORT 1
+#define BO_ALLOC_PROTECT_ON 2
+#define BO_ALLOC_PROTECT_OFF 3
+
+/* test-configs for protected context creation*/
+#define CTX_ALLOC_NO_HW_SUPPORT 1
+#define CTX_ALLOC_RECOVER_OFF_PROTECT_OFF 2
+#define CTX_ALLOC_RECOVER_OFF_PROTECT_ON 3
+#define CTX_ALLOC_RECOVER_ON_PROTECT_OFF 4
+#define CTX_ALLOC_RECOVER_ON_PROTECT_ON 5
+#define CTX_MODIFY_PROTECTED_RECOVER_OFF_TO_ON 6
+#define CTX_MODIFY_PROTECTED_PROTECT_ON_TO_OFF 7
+#define CTX_MODIFY_PROTECTED_BOTHPARAMS_TO_INVALID 8
+#define CTX_MODIFY_UNPROTECTED_BOTHPARAMS_TO_VALID 9
+
+static bool is_pxp_hw_supported(int i915)
+{
+ uint32_t devid = intel_get_drm_devid(i915);
+ const struct intel_device_info *devinfo = intel_get_device_info(devid);
+
+ if (!devinfo) {
+ igt_info("No device info found - assume no PXP support.\n");
+ return false;
+ }
+ if (devinfo->is_tigerlake || devinfo->is_rocketlake ||
+ devinfo->is_alderlake_s) {
+ return true;
+ }
+
+ return false;
+}
+
+static uint32_t create_protected_bo(int i915, uint32_t size, bool protected_is_true,
+ int expected_return)
+{
+ int ret;
+
+ struct drm_i915_gem_create_ext_protected_content protected_ext = {
+ .base = { .name = I915_GEM_CREATE_EXT_PROTECTED_CONTENT },
+ .flags = 0,
+ };
+
+ struct drm_i915_gem_create_ext create_ext = {
+ .size = size,
+ .extensions = 0,
+ };
+
+ if (protected_is_true)
+ create_ext.extensions = (uintptr_t)&protected_ext;
+
+ ret = ioctl(i915, DRM_IOCTL_I915_GEM_CREATE_EXT, &create_ext);
+ igt_assert_eq(ret, expected_return);
+
+ return create_ext.handle;
+}
+
+static void test_create_protected_buffer(int i915, uint32_t test_cfg)
+{
+ uint32_t bo;
+
+ switch (test_cfg) {
+ case BO_ALLOC_NO_HW_SUPPORT:
+ bo = create_protected_bo(i915, 4096, false, 0);
+ gem_close(i915, bo);
+ bo = create_protected_bo(i915, 4096, true, -ENODEV);
+ igt_assert_eq(bo, 0);
+ break;
+
+ case BO_ALLOC_PROTECT_OFF:
+ bo = create_protected_bo(i915, 4096, false, 0);
+ gem_close(i915, bo);
+ break;
+
+ case BO_ALLOC_PROTECT_ON:
+ bo = create_protected_bo(i915, 4096, true, 0);
+ gem_close(i915, bo);
+ break;
+
+ default:
+ igt_info("Skipping unknown buffer test_cfg = %d\n", test_cfg);
+ break;
+ }
+}
+
+static int create_ext_ioctl(int i915, struct drm_i915_gem_context_create_ext *arg)
+{
+ int err;
+
+ err = 0;
+ if (igt_ioctl(i915, DRM_IOCTL_I915_GEM_CONTEXT_CREATE_EXT, arg)) {
+ err = -errno;
+ igt_assume(err);
+ }
+
+ errno = 0;
+ return err;
+}
+
+static uint32_t create_protected_ctx(int i915, bool with_protected_param, bool protected_is_true,
+ bool with_recoverable_param, bool recoverable_is_true,
+ int expected_return)
+{
+ int ret;
+
+ struct drm_i915_gem_context_create_ext_setparam p_prot = {
+ .base = {
+ .name = I915_CONTEXT_CREATE_EXT_SETPARAM,
+ .next_extension = 0,
+ },
+ .param = {
+ .param = I915_CONTEXT_PARAM_PROTECTED_CONTENT,
+ .value = 0,
+ }
+ };
+ struct drm_i915_gem_context_create_ext_setparam p_norecover = {
+ .base = {
+ .name = I915_CONTEXT_CREATE_EXT_SETPARAM,
+ .next_extension = 0,
+ },
+ .param = {
+ .param = I915_CONTEXT_PARAM_RECOVERABLE,
+ .value = 0,
+ }
+ };
+ struct drm_i915_gem_context_create_ext create = {
+ .flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS,
+ .extensions = 0,
+ };
+
+ p_prot.param.value = protected_is_true;
+ p_norecover.param.value = recoverable_is_true;
+
+ if (with_protected_param && with_recoverable_param) {
+ create.extensions = to_user_pointer(&(p_norecover.base));
+ p_norecover.base.next_extension = to_user_pointer(&(p_prot.base));
+ } else if (!with_protected_param && with_recoverable_param) {
+ create.extensions = to_user_pointer(&(p_norecover.base));
+ p_norecover.base.next_extension = 0;
+ } else if (with_protected_param && !with_recoverable_param) {
+ create.extensions = to_user_pointer(&(p_prot.base));
+ p_prot.base.next_extension = 0;
+ } else if (!with_protected_param && !with_recoverable_param) {
+ create.flags = 0;
+ }
+
+ ret = create_ext_ioctl(i915, &create);
+ igt_assert_eq(ret, expected_return);
+
+ return create.ctx_id;
+}
+
+#define CHANGE_PARAM_PROTECTED 0x0001
+#define CHANGE_PARAM_RECOVERY 0x0002
+static void modify_ctx_protected_param(int i915, uint32_t ctx_id, uint32_t change_param_mask,
+ bool param_value, int expected_return)
+{
+ int ret;
+
+ struct drm_i915_gem_context_param ctx_param = {
+ .ctx_id = ctx_id,
+ .param = 0,
+ .value = 0,
+ };
+
+ if (change_param_mask == CHANGE_PARAM_PROTECTED) {
+ ctx_param.param = I915_CONTEXT_PARAM_PROTECTED_CONTENT;
+ ctx_param.value = (int)param_value;
+ } else if (change_param_mask == CHANGE_PARAM_RECOVERY) {
+ ctx_param.param = I915_CONTEXT_PARAM_RECOVERABLE;
+ ctx_param.value = (int)param_value;
+ } else {
+ return;
+ }
+
+ ret = ioctl(i915, DRM_IOCTL_I915_GEM_CONTEXT_SETPARAM, &ctx_param);
+
+ igt_assert_eq(ret, expected_return);
+}
+
+static void assert_ctx_protected_param(int i915, uint32_t ctx_id, bool is_protected)
+{
+ int ret;
+
+ struct drm_i915_gem_context_param ctx_param = {
+ .ctx_id = ctx_id,
+ .param = I915_CONTEXT_PARAM_PROTECTED_CONTENT,
+ };
+
+ ret = ioctl(i915, DRM_IOCTL_I915_GEM_CONTEXT_GETPARAM, &ctx_param);
+ igt_assert_eq(ret, 0);
+ igt_assert_eq(ctx_param.value, (int)is_protected);
+}
+
+static void assert_ctx_recovery_param(int i915, uint32_t ctx_id, bool is_recoverable)
+{
+ int ret;
+
+ struct drm_i915_gem_context_param ctx_param = {
+ .ctx_id = ctx_id,
+ .param = I915_CONTEXT_PARAM_RECOVERABLE,
+ };
+
+ ret = ioctl(i915, DRM_IOCTL_I915_GEM_CONTEXT_GETPARAM, &ctx_param);
+ igt_assert_eq(ret, 0);
+ igt_assert_eq(ctx_param.value, (int)is_recoverable);
+}
+
+static void test_create_protected_context(int i915, uint32_t test_cfg)
+{
+ uint32_t ctx;
+
+ switch (test_cfg) {
+ case CTX_ALLOC_NO_HW_SUPPORT:
+ ctx = create_protected_ctx(i915, true, true, true, false, -ENODEV);
+ igt_assert_eq(ctx, 0);
+ case CTX_ALLOC_RECOVER_OFF_PROTECT_OFF:
+ ctx = create_protected_ctx(i915, true, false, true, false, 0);
+ assert_ctx_protected_param(i915, ctx, false);
+ assert_ctx_recovery_param(i915, ctx, false);
+ gem_context_destroy(i915, ctx);
+ break;
+
+ case CTX_ALLOC_RECOVER_OFF_PROTECT_ON:
+ ctx = create_protected_ctx(i915, true, true, true, false, 0);
+ assert_ctx_protected_param(i915, ctx, true);
+ assert_ctx_recovery_param(i915, ctx, false);
+ gem_context_destroy(i915, ctx);
+ break;
+
+ case CTX_ALLOC_RECOVER_ON_PROTECT_OFF:
+ ctx = create_protected_ctx(i915, true, false, true, true, 0);
+ assert_ctx_protected_param(i915, ctx, false);
+ assert_ctx_recovery_param(i915, ctx, true);
+ gem_context_destroy(i915, ctx);
+ break;
+
+ case CTX_ALLOC_RECOVER_ON_PROTECT_ON:
+ ctx = create_protected_ctx(i915, true, true, true, true, -EPERM);
+ igt_assert_eq(ctx, 0);
+ ctx = create_protected_ctx(i915, true, true, false, false, -EPERM);
+ igt_assert_eq(ctx, 0);
+ break;
+
+ case CTX_MODIFY_PROTECTED_RECOVER_OFF_TO_ON:
+ ctx = create_protected_ctx(i915, true, true, true, false, 0);
+ assert_ctx_protected_param(i915, ctx, true);
+ assert_ctx_recovery_param(i915, ctx, false);
+ modify_ctx_protected_param(i915, ctx, CHANGE_PARAM_RECOVERY, true, -EPERM);
+ assert_ctx_recovery_param(i915, ctx, false);
+ gem_context_destroy(i915, ctx);
+ break;
+
+ case CTX_MODIFY_PROTECTED_PROTECT_ON_TO_OFF:
+ ctx = create_protected_ctx(i915, true, true, true, false, 0);
+ assert_ctx_protected_param(i915, ctx, true);
+ assert_ctx_recovery_param(i915, ctx, false);
+ modify_ctx_protected_param(i915, ctx, CHANGE_PARAM_PROTECTED, false, -EPERM);
+ assert_ctx_protected_param(i915, ctx, true);
+ assert_ctx_recovery_param(i915, ctx, false);
+ gem_context_destroy(i915, ctx);
+ break;
+
+ case CTX_MODIFY_PROTECTED_BOTHPARAMS_TO_INVALID:
+ ctx = create_protected_ctx(i915, true, true, true, false, 0);
+ assert_ctx_protected_param(i915, ctx, true);
+ assert_ctx_recovery_param(i915, ctx, false);
+ modify_ctx_protected_param(i915, ctx, CHANGE_PARAM_RECOVERY, true, -EPERM);
+ modify_ctx_protected_param(i915, ctx, CHANGE_PARAM_PROTECTED, false, -EPERM);
+ assert_ctx_protected_param(i915, ctx, true);
+ assert_ctx_recovery_param(i915, ctx, false);
+ gem_context_destroy(i915, ctx);
+ break;
+
+ case CTX_MODIFY_UNPROTECTED_BOTHPARAMS_TO_VALID:
+ ctx = create_protected_ctx(i915, false, false, false, false, 0);
+ assert_ctx_protected_param(i915, ctx, false);
+ assert_ctx_recovery_param(i915, ctx, true);
+ modify_ctx_protected_param(i915, ctx, CHANGE_PARAM_RECOVERY, false, 0);
+ modify_ctx_protected_param(i915, ctx, CHANGE_PARAM_PROTECTED, true, -EPERM);
+ assert_ctx_protected_param(i915, ctx, false);
+ assert_ctx_recovery_param(i915, ctx, false);
+ gem_context_destroy(i915, ctx);
+ break;
+
+ default:
+ igt_info("Skipping unknown context test_cfg = %d\n", test_cfg);
+ break;
+ }
+}
+
+igt_main
+{
+ int i915 = -1;
+ bool pxp_supported = false;
+
+ igt_fixture
+ {
+ i915 = drm_open_driver(DRIVER_INTEL);
+ igt_require(i915);
+ igt_require_gem(i915);
+ pxp_supported = is_pxp_hw_supported(i915);
+ }
+
+ igt_subtest_group {
+ igt_fixture {
+ igt_require((pxp_supported == 0));
+ }
+
+ igt_describe("Verify protected buffer on unsupported hw:");
+ igt_subtest("hw-rejects-pxp-buffer")
+ test_create_protected_buffer(i915, BO_ALLOC_NO_HW_SUPPORT);
+ igt_describe("Verify protected context on unsupported hw:");
+ igt_subtest("hw-rejects-pxp-context")
+ test_create_protected_context(i915, CTX_ALLOC_NO_HW_SUPPORT);
+ }
+
+ igt_subtest_group {
+ igt_fixture {
+ igt_require(pxp_supported);
+ }
+
+ igt_describe("Verify protected buffer on supported hw:");
+ igt_subtest("create-regular-buffer")
+ test_create_protected_buffer(i915, BO_ALLOC_PROTECT_OFF);
+ igt_subtest("create-protected-buffer")
+ test_create_protected_buffer(i915, BO_ALLOC_PROTECT_ON);
+
+ igt_describe("Verify protected context on supported hw:");
+ igt_subtest("create-regular-context-1")
+ test_create_protected_context(i915, CTX_ALLOC_RECOVER_OFF_PROTECT_OFF);
+ igt_subtest("create-regular-context-2")
+ test_create_protected_context(i915, CTX_ALLOC_RECOVER_ON_PROTECT_OFF);
+ igt_subtest("fail-invalid-protected-context")
+ test_create_protected_context(i915, CTX_ALLOC_RECOVER_ON_PROTECT_ON);
+ igt_subtest("create-valid-protected-context")
+ test_create_protected_context(i915, CTX_ALLOC_RECOVER_OFF_PROTECT_ON);
+
+ igt_describe("Verify protected context integrity:");
+ igt_subtest("reject-modify-context-protection-on")
+ test_create_protected_context(i915, CTX_MODIFY_UNPROTECTED_BOTHPARAMS_TO_VALID);
+ igt_subtest("reject-modify-context-protection-off-1")
+ test_create_protected_context(i915, CTX_MODIFY_PROTECTED_RECOVER_OFF_TO_ON);
+ igt_subtest("reject-modify-context-protection-off-2")
+ test_create_protected_context(i915, CTX_MODIFY_PROTECTED_PROTECT_ON_TO_OFF);
+ igt_subtest("reject-modify-context-protection-off-3")
+ test_create_protected_context(i915, CTX_MODIFY_PROTECTED_BOTHPARAMS_TO_INVALID);
+ }
+
+ igt_fixture {
+ close(i915);
+ }
+}
diff --git a/tests/meson.build b/tests/meson.build
index 19cc4ebe..e0bff4d1 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -187,6 +187,7 @@ i915_progs = [
'gem_pread_after_blit',
'gem_pwrite',
'gem_pwrite_snooped',
+ 'gem_pxp',
'gem_read_read_speed',
'gem_readwrite',
'gem_reg_read',
--
2.25.1
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