From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Two simple selftests which test that both GT and engine workarounds are
not lost after either a full GPU reset, or after the per-engine ones.
(Including checks that one engine reset is not affecting workarounds not
belonging to itself.)
v2:
* Rebase for series refactoring.
* Add spinner for actual engine reset!
* Add idle reset test as well. (Chris Wilson)
* Share existing global_reset_lock. (Chris Wilson)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/intel_workarounds.c | 6 +
drivers/gpu/drm/i915/selftests/igt_common.c | 44 ++++++
drivers/gpu/drm/i915/selftests/igt_common.h | 15 ++
.../gpu/drm/i915/selftests/intel_hangcheck.c | 51 ++----
.../drm/i915/selftests/intel_workarounds.c | 147 +++++++++++++++++-
6 files changed, 217 insertions(+), 47 deletions(-)
create mode 100644 drivers/gpu/drm/i915/selftests/igt_common.c
create mode 100644 drivers/gpu/drm/i915/selftests/igt_common.h
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 50a8fa8fce64..ceeb21f8aa0c 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -166,6 +166,7 @@ i915-$(CONFIG_DRM_I915_SELFTEST) += \
selftests/i915_random.o \
selftests/i915_selftest.o \
selftests/igt_flush_test.o \
+ selftests/igt_common.o \
selftests/igt_spinner.o
# virtual gpu code
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index d80ea8172222..5a4d70e02b63 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -1303,4 +1303,10 @@ void intel_engine_workarounds_apply(struct intel_engine_cs *engine)
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/intel_workarounds.c"
+
+bool intel_engine_workarounds_verify(struct intel_engine_cs *engine,
+ const char *from)
+{
+ return wa_list_verify(engine->i915, &engine->wa_list, from);
+}
#endif
diff --git a/drivers/gpu/drm/i915/selftests/igt_common.c b/drivers/gpu/drm/i915/selftests/igt_common.c
new file mode 100644
index 000000000000..ad00fdf895be
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_common.c
@@ -0,0 +1,44 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include "igt_common.h"
+
+#include "../i915_drv.h"
+#include "../intel_ringbuffer.h"
+
+void igt_global_reset_lock(struct drm_i915_private *i915)
+{
+ struct intel_engine_cs *engine;
+ enum intel_engine_id id;
+
+ pr_debug("%s: current gpu_error=%08lx\n",
+ __func__, i915->gpu_error.flags);
+
+ while (test_and_set_bit(I915_RESET_BACKOFF, &i915->gpu_error.flags))
+ wait_event(i915->gpu_error.reset_queue,
+ !test_bit(I915_RESET_BACKOFF,
+ &i915->gpu_error.flags));
+
+ for_each_engine(engine, i915, id) {
+ while (test_and_set_bit(I915_RESET_ENGINE + id,
+ &i915->gpu_error.flags))
+ wait_on_bit(&i915->gpu_error.flags,
+ I915_RESET_ENGINE + id,
+ TASK_UNINTERRUPTIBLE);
+ }
+}
+
+void igt_global_reset_unlock(struct drm_i915_private *i915)
+{
+ struct intel_engine_cs *engine;
+ enum intel_engine_id id;
+
+ for_each_engine(engine, i915, id)
+ clear_bit(I915_RESET_ENGINE + id, &i915->gpu_error.flags);
+
+ clear_bit(I915_RESET_BACKOFF, &i915->gpu_error.flags);
+ wake_up_all(&i915->gpu_error.reset_queue);
+}
diff --git a/drivers/gpu/drm/i915/selftests/igt_common.h b/drivers/gpu/drm/i915/selftests/igt_common.h
new file mode 100644
index 000000000000..3df12ed10200
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_common.h
@@ -0,0 +1,15 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#ifndef __I915_SELFTESTS_IGT_COMMON_H__
+#define __I915_SELFTESTS_IGT_COMMON_H__
+
+#include "../i915_drv.h"
+
+void igt_global_reset_lock(struct drm_i915_private *i915);
+void igt_global_reset_unlock(struct drm_i915_private *i915);
+
+#endif
diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
index defe671130ab..af31e4a4979d 100644
--- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
@@ -25,6 +25,7 @@
#include <linux/kthread.h>
#include "../i915_selftest.h"
+#include "igt_common.h"
#include "i915_random.h"
#include "igt_flush_test.h"
#include "igt_wedge_me.h"
@@ -348,40 +349,6 @@ static int igt_hang_sanitycheck(void *arg)
return err;
}
-static void global_reset_lock(struct drm_i915_private *i915)
-{
- struct intel_engine_cs *engine;
- enum intel_engine_id id;
-
- pr_debug("%s: current gpu_error=%08lx\n",
- __func__, i915->gpu_error.flags);
-
- while (test_and_set_bit(I915_RESET_BACKOFF, &i915->gpu_error.flags))
- wait_event(i915->gpu_error.reset_queue,
- !test_bit(I915_RESET_BACKOFF,
- &i915->gpu_error.flags));
-
- for_each_engine(engine, i915, id) {
- while (test_and_set_bit(I915_RESET_ENGINE + id,
- &i915->gpu_error.flags))
- wait_on_bit(&i915->gpu_error.flags,
- I915_RESET_ENGINE + id,
- TASK_UNINTERRUPTIBLE);
- }
-}
-
-static void global_reset_unlock(struct drm_i915_private *i915)
-{
- struct intel_engine_cs *engine;
- enum intel_engine_id id;
-
- for_each_engine(engine, i915, id)
- clear_bit(I915_RESET_ENGINE + id, &i915->gpu_error.flags);
-
- clear_bit(I915_RESET_BACKOFF, &i915->gpu_error.flags);
- wake_up_all(&i915->gpu_error.reset_queue);
-}
-
static int igt_global_reset(void *arg)
{
struct drm_i915_private *i915 = arg;
@@ -390,7 +357,7 @@ static int igt_global_reset(void *arg)
/* Check that we can issue a global GPU reset */
- global_reset_lock(i915);
+ igt_global_reset_lock(i915);
set_bit(I915_RESET_HANDOFF, &i915->gpu_error.flags);
mutex_lock(&i915->drm.struct_mutex);
@@ -405,7 +372,7 @@ static int igt_global_reset(void *arg)
mutex_unlock(&i915->drm.struct_mutex);
GEM_BUG_ON(test_bit(I915_RESET_HANDOFF, &i915->gpu_error.flags));
- global_reset_unlock(i915);
+ igt_global_reset_unlock(i915);
if (i915_terminally_wedged(&i915->gpu_error))
err = -EIO;
@@ -936,7 +903,7 @@ static int igt_reset_wait(void *arg)
/* Check that we detect a stuck waiter and issue a reset */
- global_reset_lock(i915);
+ igt_global_reset_lock(i915);
mutex_lock(&i915->drm.struct_mutex);
err = hang_init(&h, i915);
@@ -988,7 +955,7 @@ static int igt_reset_wait(void *arg)
hang_fini(&h);
unlock:
mutex_unlock(&i915->drm.struct_mutex);
- global_reset_unlock(i915);
+ igt_global_reset_unlock(i915);
if (i915_terminally_wedged(&i915->gpu_error))
return -EIO;
@@ -1066,7 +1033,7 @@ static int __igt_reset_evict_vma(struct drm_i915_private *i915,
/* Check that we can recover an unbind stuck on a hanging request */
- global_reset_lock(i915);
+ igt_global_reset_lock(i915);
mutex_lock(&i915->drm.struct_mutex);
err = hang_init(&h, i915);
@@ -1186,7 +1153,7 @@ static int __igt_reset_evict_vma(struct drm_i915_private *i915,
hang_fini(&h);
unlock:
mutex_unlock(&i915->drm.struct_mutex);
- global_reset_unlock(i915);
+ igt_global_reset_unlock(i915);
if (i915_terminally_wedged(&i915->gpu_error))
return -EIO;
@@ -1266,7 +1233,7 @@ static int igt_reset_queue(void *arg)
/* Check that we replay pending requests following a hang */
- global_reset_lock(i915);
+ igt_global_reset_lock(i915);
mutex_lock(&i915->drm.struct_mutex);
err = hang_init(&h, i915);
@@ -1397,7 +1364,7 @@ static int igt_reset_queue(void *arg)
hang_fini(&h);
unlock:
mutex_unlock(&i915->drm.struct_mutex);
- global_reset_unlock(i915);
+ igt_global_reset_unlock(i915);
if (i915_terminally_wedged(&i915->gpu_error))
return -EIO;
diff --git a/drivers/gpu/drm/i915/selftests/intel_workarounds.c b/drivers/gpu/drm/i915/selftests/intel_workarounds.c
index 80396b3592f5..194a3c30554d 100644
--- a/drivers/gpu/drm/i915/selftests/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/selftests/intel_workarounds.c
@@ -6,6 +6,8 @@
#include "../i915_selftest.h"
+#include "igt_common.h"
+#include "igt_flush_test.h"
#include "igt_spinner.h"
#include "igt_wedge_me.h"
#include "mock_context.h"
@@ -290,7 +292,6 @@ static int live_reset_whitelist(void *arg)
{
struct drm_i915_private *i915 = arg;
struct intel_engine_cs *engine = i915->engine[RCS];
- struct i915_gpu_error *error = &i915->gpu_error;
struct whitelist w;
int err = 0;
@@ -302,8 +303,7 @@ static int live_reset_whitelist(void *arg)
if (!whitelist_build(engine, &w))
return 0;
- set_bit(I915_RESET_BACKOFF, &error->flags);
- set_bit(I915_RESET_ENGINE + engine->id, &error->flags);
+ igt_global_reset_lock(i915);
if (intel_has_reset_engine(i915)) {
err = check_whitelist_across_reset(engine,
@@ -322,15 +322,152 @@ static int live_reset_whitelist(void *arg)
}
out:
- clear_bit(I915_RESET_ENGINE + engine->id, &error->flags);
- clear_bit(I915_RESET_BACKOFF, &error->flags);
+ igt_global_reset_unlock(i915);
return err;
}
+bool intel_engine_workarounds_verify(struct intel_engine_cs *engine,
+ const char *from);
+
+static bool verify_gt_engine_wa(struct drm_i915_private *i915, const char *str)
+{
+ struct intel_engine_cs *engine;
+ enum intel_engine_id id;
+ bool ok = true;
+
+ ok &= intel_gt_workarounds_verify(i915, str);
+
+ for_each_engine(engine, i915, id)
+ ok &= intel_engine_workarounds_verify(engine, str);
+
+ return ok;
+}
+
+static int
+live_gpu_reset_gt_engine_workarounds(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct i915_gpu_error *error = &i915->gpu_error;
+ bool ok;
+
+ if (!intel_has_gpu_reset(i915))
+ return 0;
+
+ pr_info("Verifying after GPU reset...\n");
+
+ igt_global_reset_lock(i915);
+
+ ok = verify_gt_engine_wa(i915, "before reset");
+ if (!ok)
+ goto out;
+
+ intel_runtime_pm_get(i915);
+ set_bit(I915_RESET_HANDOFF, &error->flags);
+ i915_reset(i915, ALL_ENGINES, "live_workarounds");
+ intel_runtime_pm_put(i915);
+
+ ok = verify_gt_engine_wa(i915, "after reset");
+
+out:
+ igt_global_reset_unlock(i915);
+
+ return ok ? 0 : -ESRCH;
+}
+
+static int
+live_engine_reset_gt_engine_workarounds(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct intel_engine_cs *engine;
+ struct i915_gem_context *ctx;
+ struct igt_spinner spin;
+ enum intel_engine_id id;
+ struct i915_request *rq;
+ int ret = 0;
+
+ if (!intel_has_reset_engine(i915))
+ return 0;
+
+ ctx = kernel_context(i915);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+ for_each_engine(engine, i915, id) {
+ bool ok;
+
+ pr_info("Verifying after %s reset...\n", engine->name);
+
+ igt_global_reset_lock(i915);
+
+ ok = verify_gt_engine_wa(i915, "before reset");
+ if (!ok) {
+ ret = -ESRCH;
+ goto err;
+ }
+
+ intel_runtime_pm_get(i915);
+ i915_reset_engine(engine, "live_workarounds");
+ intel_runtime_pm_put(i915);
+
+ ok = verify_gt_engine_wa(i915, "after idle reset");
+ if (!ok) {
+ ret = -ESRCH;
+ goto err;
+ }
+
+ ret = igt_spinner_init(&spin, i915);
+ if (ret)
+ goto err;
+
+ intel_runtime_pm_get(i915);
+
+ rq = igt_spinner_create_request(&spin, ctx, engine, MI_NOOP);
+ if (IS_ERR(rq)) {
+ ret = PTR_ERR(rq);
+ igt_spinner_fini(&spin);
+ goto err;
+ }
+
+ i915_request_add(rq);
+
+ if (!igt_wait_for_spinner(&spin, rq)) {
+ pr_err("Spinner failed to start\n");
+ igt_spinner_fini(&spin);
+ ret = -ETIMEDOUT;
+ goto err;
+ }
+
+ i915_reset_engine(engine, "live_workarounds");
+
+ intel_runtime_pm_put(i915);
+
+ igt_spinner_end(&spin);
+ igt_spinner_fini(&spin);
+
+ ok = verify_gt_engine_wa(i915, "after busy reset");
+ if (!ok) {
+ ret = -ESRCH;
+ goto err;
+ }
+
+ igt_global_reset_unlock(i915);
+ }
+
+err:
+ igt_global_reset_unlock(i915);
+ kernel_context_close(ctx);
+
+ igt_flush_test(i915, I915_WAIT_LOCKED);
+
+ return ret;
+}
+
int intel_workarounds_live_selftests(struct drm_i915_private *i915)
{
static const struct i915_subtest tests[] = {
SUBTEST(live_reset_whitelist),
+ SUBTEST(live_gpu_reset_gt_engine_workarounds),
+ SUBTEST(live_engine_reset_gt_engine_workarounds),
};
int err;
--
2.19.1
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