Re: [PATCH] drm/i915/selftests: Teach workarounds to take intel_gt as its argument

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On 16/10/2019 12:49, Chris Wilson wrote:
The workarounds selftests are hardware centric and so want to use the gt
as its target.

Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
  .../gpu/drm/i915/gt/selftest_workarounds.c    | 128 +++++++++---------
  1 file changed, 65 insertions(+), 63 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/selftest_workarounds.c b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
index dc11f7ad50a2..8856c6c46cc4 100644
--- a/drivers/gpu/drm/i915/gt/selftest_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
@@ -58,7 +58,7 @@ static int request_add_spin(struct i915_request *rq, struct igt_spinner *spin)
  }
static void
-reference_lists_init(struct drm_i915_private *i915, struct wa_lists *lists)
+reference_lists_init(struct intel_gt *gt, struct wa_lists *lists)
  {
  	struct intel_engine_cs *engine;
  	enum intel_engine_id id;
@@ -66,10 +66,10 @@ reference_lists_init(struct drm_i915_private *i915, struct wa_lists *lists)
  	memset(lists, 0, sizeof(*lists));
wa_init_start(&lists->gt_wa_list, "GT_REF", "global");
-	gt_init_workarounds(i915, &lists->gt_wa_list);
+	gt_init_workarounds(gt->i915, &lists->gt_wa_list);
  	wa_init_finish(&lists->gt_wa_list);
- for_each_engine(engine, i915, id) {
+	for_each_engine(engine, gt->i915, id) {

^^^

  		struct i915_wa_list *wal = &lists->engine[id].wa_list;
wa_init_start(wal, "REF", engine->name);
@@ -83,12 +83,12 @@ reference_lists_init(struct drm_i915_private *i915, struct wa_lists *lists)
  }
static void
-reference_lists_fini(struct drm_i915_private *i915, struct wa_lists *lists)
+reference_lists_fini(struct intel_gt *gt, struct wa_lists *lists)
  {
  	struct intel_engine_cs *engine;
  	enum intel_engine_id id;
- for_each_engine(engine, i915, id)
+	for_each_engine(engine, gt->i915, id)
  		intel_wa_list_free(&lists->engine[id].wa_list);
intel_wa_list_free(&lists->gt_wa_list);
@@ -215,10 +215,10 @@ static int check_whitelist(struct i915_gem_context *ctx,
err = 0;
  	i915_gem_object_lock(results);
-	intel_wedge_on_timeout(&wedge, &ctx->i915->gt, HZ / 5) /* safety net! */
+	intel_wedge_on_timeout(&wedge, engine->gt, HZ / 5) /* safety net! */
  		err = i915_gem_object_set_to_cpu_domain(results, false);
  	i915_gem_object_unlock(results);
-	if (intel_gt_is_wedged(&ctx->i915->gt))
+	if (intel_gt_is_wedged(engine->gt))
  		err = -EIO;
  	if (err)
  		goto out_put;
@@ -605,7 +605,7 @@ static int check_dirty_whitelist(struct i915_gem_context *ctx,
  		if (err) {
  			pr_err("%s: Futzing %x timedout; cancelling test\n",
  			       engine->name, reg);
-			intel_gt_set_wedged(&ctx->i915->gt);
+			intel_gt_set_wedged(engine->gt);
  			goto out_batch;
  		}
@@ -704,7 +704,7 @@ static int check_dirty_whitelist(struct i915_gem_context *ctx, static int live_dirty_whitelist(void *arg)
  {
-	struct drm_i915_private *i915 = arg;
+	struct intel_gt *gt = arg;
  	struct intel_engine_cs *engine;
  	struct i915_gem_context *ctx;
  	enum intel_engine_id id;
@@ -713,20 +713,20 @@ static int live_dirty_whitelist(void *arg)
/* Can the user write to the whitelisted registers? */ - if (INTEL_GEN(i915) < 7) /* minimum requirement for LRI, SRM, LRM */
+	if (INTEL_GEN(gt->i915) < 7) /* minimum requirement for LRI, SRM, LRM */
  		return 0;
- file = mock_file(i915);
+	file = mock_file(gt->i915);
  	if (IS_ERR(file))
  		return PTR_ERR(file);
- ctx = live_context(i915, file);
+	ctx = live_context(gt->i915, file);
  	if (IS_ERR(ctx)) {
  		err = PTR_ERR(ctx);
  		goto out_file;
  	}
- for_each_engine(engine, i915, id) {
+	for_each_engine(engine, gt->i915, id) {

^^^

  		if (engine->whitelist.count == 0)
  			continue;
@@ -736,41 +736,43 @@ static int live_dirty_whitelist(void *arg)
  	}
out_file:
-	mock_file_free(i915, file);
+	mock_file_free(gt->i915, file);
  	return err;
  }
static int live_reset_whitelist(void *arg)
  {
-	struct drm_i915_private *i915 = arg;
-	struct intel_engine_cs *engine = i915->engine[RCS0];
+	struct intel_gt *gt = arg;
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
  	int err = 0;
/* If we reset the gpu, we should not lose the RING_NONPRIV */
+	igt_global_reset_lock(gt);
- if (!engine || engine->whitelist.count == 0)
-		return 0;
-
-	igt_global_reset_lock(&i915->gt);
+	for_each_engine(engine, gt->i915, id) {

^^^

+		if (engine->whitelist.count == 0)
+			continue;
- if (intel_has_reset_engine(&i915->gt)) {
-		err = check_whitelist_across_reset(engine,
-						   do_engine_reset,
-						   "engine");
-		if (err)
-			goto out;
-	}
+		if (intel_has_reset_engine(gt)) {
+			err = check_whitelist_across_reset(engine,
+							   do_engine_reset,
+							   "engine");
+			if (err)
+				goto out;
+		}
- if (intel_has_gpu_reset(&i915->gt)) {
-		err = check_whitelist_across_reset(engine,
-						   do_device_reset,
-						   "device");
-		if (err)
-			goto out;
+		if (intel_has_gpu_reset(gt)) {
+			err = check_whitelist_across_reset(engine,
+							   do_device_reset,
+							   "device");
+			if (err)
+				goto out;
+		}
  	}
out:
-	igt_global_reset_unlock(&i915->gt);
+	igt_global_reset_unlock(gt);
  	return err;
  }
@@ -996,7 +998,7 @@ check_whitelisted_registers(struct intel_engine_cs *engine, static int live_isolated_whitelist(void *arg)
  {
-	struct drm_i915_private *i915 = arg;
+	struct intel_gt *gt = arg;
  	struct {
  		struct i915_gem_context *ctx;
  		struct i915_vma *scratch[2];
@@ -1010,17 +1012,14 @@ static int live_isolated_whitelist(void *arg)
  	 * invisible to a second context.
  	 */
- if (!intel_engines_has_context_isolation(i915))
-		return 0;
-
-	if (!i915->kernel_context->vm)
+	if (!intel_engines_has_context_isolation(gt->i915))
  		return 0;
for (i = 0; i < ARRAY_SIZE(client); i++) {
  		struct i915_address_space *vm;
  		struct i915_gem_context *c;
- c = kernel_context(i915);
+		c = kernel_context(gt->i915);
  		if (IS_ERR(c)) {
  			err = PTR_ERR(c);
  			goto err;
@@ -1049,7 +1048,10 @@ static int live_isolated_whitelist(void *arg)
  		i915_vm_put(vm);
  	}
- for_each_engine(engine, i915, id) {
+	for_each_engine(engine, gt->i915, id) {

^^^

+		if (!engine->kernel_context->vm)
+			continue;
+
  		if (!whitelist_writable_count(engine))
  			continue;
@@ -1103,7 +1105,7 @@ static int live_isolated_whitelist(void *arg)
  		kernel_context_close(client[i].ctx);
  	}
- if (igt_flush_test(i915))
+	if (igt_flush_test(gt->i915))
  		err = -EIO;
return err;
@@ -1138,16 +1140,16 @@ verify_wa_lists(struct i915_gem_context *ctx, struct wa_lists *lists,
  static int
  live_gpu_reset_workarounds(void *arg)
  {
-	struct drm_i915_private *i915 = arg;
+	struct intel_gt *gt = arg;
  	struct i915_gem_context *ctx;
  	intel_wakeref_t wakeref;
  	struct wa_lists lists;
  	bool ok;
- if (!intel_has_gpu_reset(&i915->gt))
+	if (!intel_has_gpu_reset(gt))
  		return 0;
- ctx = kernel_context(i915);
+	ctx = kernel_context(gt->i915);
  	if (IS_ERR(ctx))
  		return PTR_ERR(ctx);
@@ -1155,25 +1157,25 @@ live_gpu_reset_workarounds(void *arg) pr_info("Verifying after GPU reset...\n"); - igt_global_reset_lock(&i915->gt);
-	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+	igt_global_reset_lock(gt);
+	wakeref = intel_runtime_pm_get(gt->uncore->rpm);
- reference_lists_init(i915, &lists);
+	reference_lists_init(gt, &lists);
ok = verify_wa_lists(ctx, &lists, "before reset");
  	if (!ok)
  		goto out;
- intel_gt_reset(&i915->gt, ALL_ENGINES, "live_workarounds");
+	intel_gt_reset(gt, ALL_ENGINES, "live_workarounds");
ok = verify_wa_lists(ctx, &lists, "after reset"); out:
  	i915_gem_context_unlock_engines(ctx);
  	kernel_context_close(ctx);
-	reference_lists_fini(i915, &lists);
-	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
-	igt_global_reset_unlock(&i915->gt);
+	reference_lists_fini(gt, &lists);
+	intel_runtime_pm_put(gt->uncore->rpm, wakeref);
+	igt_global_reset_unlock(gt);
return ok ? 0 : -ESRCH;
  }
@@ -1181,7 +1183,7 @@ live_gpu_reset_workarounds(void *arg)
  static int
  live_engine_reset_workarounds(void *arg)
  {
-	struct drm_i915_private *i915 = arg;
+	struct intel_gt *gt = arg;
  	struct i915_gem_engines_iter it;
  	struct i915_gem_context *ctx;
  	struct intel_context *ce;
@@ -1191,17 +1193,17 @@ live_engine_reset_workarounds(void *arg)
  	struct wa_lists lists;
  	int ret = 0;
- if (!intel_has_reset_engine(&i915->gt))
+	if (!intel_has_reset_engine(gt))
  		return 0;
- ctx = kernel_context(i915);
+	ctx = kernel_context(gt->i915);
  	if (IS_ERR(ctx))
  		return PTR_ERR(ctx);
- igt_global_reset_lock(&i915->gt);
-	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+	igt_global_reset_lock(gt);
+	wakeref = intel_runtime_pm_get(gt->uncore->rpm);
- reference_lists_init(i915, &lists);
+	reference_lists_init(gt, &lists);
for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) {
  		struct intel_engine_cs *engine = ce->engine;
@@ -1254,12 +1256,12 @@ live_engine_reset_workarounds(void *arg)
  	}
  err:
  	i915_gem_context_unlock_engines(ctx);
-	reference_lists_fini(i915, &lists);
-	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
-	igt_global_reset_unlock(&i915->gt);
+	reference_lists_fini(gt, &lists);
+	intel_runtime_pm_put(gt->uncore->rpm, wakeref);
+	igt_global_reset_unlock(gt);
  	kernel_context_close(ctx);
- igt_flush_test(i915);
+	igt_flush_test(gt->i915);
return ret;
  }
@@ -1277,5 +1279,5 @@ int intel_workarounds_live_selftests(struct drm_i915_private *i915)
  	if (intel_gt_is_wedged(&i915->gt))
  		return 0;
- return i915_subtests(tests, i915);
+	return intel_gt_live_subtests(tests, &i915->gt);
  }


With gt instead of gt->i915 in for_each_engine:

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko


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