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path: root/drivers/gpu/drm/i915/selftests/intel_lrc.c
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Diffstat (limited to 'drivers/gpu/drm/i915/selftests/intel_lrc.c')
-rw-r--r--drivers/gpu/drm/i915/selftests/intel_lrc.c272
1 files changed, 260 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i915/selftests/intel_lrc.c b/drivers/gpu/drm/i915/selftests/intel_lrc.c
index ca461e3a5f27..58144e024751 100644
--- a/drivers/gpu/drm/i915/selftests/intel_lrc.c
+++ b/drivers/gpu/drm/i915/selftests/intel_lrc.c
@@ -4,6 +4,10 @@
* Copyright © 2018 Intel Corporation
*/
+#include <linux/prime_numbers.h>
+
+#include "../i915_reset.h"
+
#include "../i915_selftest.h"
#include "igt_flush_test.h"
#include "igt_spinner.h"
@@ -18,13 +22,14 @@ static int live_sanitycheck(void *arg)
struct i915_gem_context *ctx;
enum intel_engine_id id;
struct igt_spinner spin;
+ intel_wakeref_t wakeref;
int err = -ENOMEM;
if (!HAS_LOGICAL_RING_CONTEXTS(i915))
return 0;
mutex_lock(&i915->drm.struct_mutex);
- intel_runtime_pm_get(i915);
+ wakeref = intel_runtime_pm_get(i915);
if (igt_spinner_init(&spin, i915))
goto err_unlock;
@@ -65,7 +70,7 @@ err_spin:
igt_spinner_fini(&spin);
err_unlock:
igt_flush_test(i915, I915_WAIT_LOCKED);
- intel_runtime_pm_put(i915);
+ intel_runtime_pm_put(i915, wakeref);
mutex_unlock(&i915->drm.struct_mutex);
return err;
}
@@ -77,13 +82,14 @@ static int live_preempt(void *arg)
struct igt_spinner spin_hi, spin_lo;
struct intel_engine_cs *engine;
enum intel_engine_id id;
+ intel_wakeref_t wakeref;
int err = -ENOMEM;
if (!HAS_LOGICAL_RING_PREEMPTION(i915))
return 0;
mutex_lock(&i915->drm.struct_mutex);
- intel_runtime_pm_get(i915);
+ wakeref = intel_runtime_pm_get(i915);
if (igt_spinner_init(&spin_hi, i915))
goto err_unlock;
@@ -158,7 +164,7 @@ err_spin_hi:
igt_spinner_fini(&spin_hi);
err_unlock:
igt_flush_test(i915, I915_WAIT_LOCKED);
- intel_runtime_pm_put(i915);
+ intel_runtime_pm_put(i915, wakeref);
mutex_unlock(&i915->drm.struct_mutex);
return err;
}
@@ -171,13 +177,14 @@ static int live_late_preempt(void *arg)
struct intel_engine_cs *engine;
struct i915_sched_attr attr = {};
enum intel_engine_id id;
+ intel_wakeref_t wakeref;
int err = -ENOMEM;
if (!HAS_LOGICAL_RING_PREEMPTION(i915))
return 0;
mutex_lock(&i915->drm.struct_mutex);
- intel_runtime_pm_get(i915);
+ wakeref = intel_runtime_pm_get(i915);
if (igt_spinner_init(&spin_hi, i915))
goto err_unlock;
@@ -251,7 +258,7 @@ err_spin_hi:
igt_spinner_fini(&spin_hi);
err_unlock:
igt_flush_test(i915, I915_WAIT_LOCKED);
- intel_runtime_pm_put(i915);
+ intel_runtime_pm_put(i915, wakeref);
mutex_unlock(&i915->drm.struct_mutex);
return err;
@@ -263,6 +270,243 @@ err_wedged:
goto err_ctx_lo;
}
+struct preempt_client {
+ struct igt_spinner spin;
+ struct i915_gem_context *ctx;
+};
+
+static int preempt_client_init(struct drm_i915_private *i915,
+ struct preempt_client *c)
+{
+ c->ctx = kernel_context(i915);
+ if (!c->ctx)
+ return -ENOMEM;
+
+ if (igt_spinner_init(&c->spin, i915))
+ goto err_ctx;
+
+ return 0;
+
+err_ctx:
+ kernel_context_close(c->ctx);
+ return -ENOMEM;
+}
+
+static void preempt_client_fini(struct preempt_client *c)
+{
+ igt_spinner_fini(&c->spin);
+ kernel_context_close(c->ctx);
+}
+
+static int live_suppress_self_preempt(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct intel_engine_cs *engine;
+ struct i915_sched_attr attr = {
+ .priority = I915_USER_PRIORITY(I915_PRIORITY_MAX)
+ };
+ struct preempt_client a, b;
+ enum intel_engine_id id;
+ intel_wakeref_t wakeref;
+ int err = -ENOMEM;
+
+ /*
+ * Verify that if a preemption request does not cause a change in
+ * the current execution order, the preempt-to-idle injection is
+ * skipped and that we do not accidentally apply it after the CS
+ * completion event.
+ */
+
+ if (!HAS_LOGICAL_RING_PREEMPTION(i915))
+ return 0;
+
+ if (USES_GUC_SUBMISSION(i915))
+ return 0; /* presume black blox */
+
+ mutex_lock(&i915->drm.struct_mutex);
+ wakeref = intel_runtime_pm_get(i915);
+
+ if (preempt_client_init(i915, &a))
+ goto err_unlock;
+ if (preempt_client_init(i915, &b))
+ goto err_client_a;
+
+ for_each_engine(engine, i915, id) {
+ struct i915_request *rq_a, *rq_b;
+ int depth;
+
+ engine->execlists.preempt_hang.count = 0;
+
+ rq_a = igt_spinner_create_request(&a.spin,
+ a.ctx, engine,
+ MI_NOOP);
+ if (IS_ERR(rq_a)) {
+ err = PTR_ERR(rq_a);
+ goto err_client_b;
+ }
+
+ i915_request_add(rq_a);
+ if (!igt_wait_for_spinner(&a.spin, rq_a)) {
+ pr_err("First client failed to start\n");
+ goto err_wedged;
+ }
+
+ for (depth = 0; depth < 8; depth++) {
+ rq_b = igt_spinner_create_request(&b.spin,
+ b.ctx, engine,
+ MI_NOOP);
+ if (IS_ERR(rq_b)) {
+ err = PTR_ERR(rq_b);
+ goto err_client_b;
+ }
+ i915_request_add(rq_b);
+
+ GEM_BUG_ON(i915_request_completed(rq_a));
+ engine->schedule(rq_a, &attr);
+ igt_spinner_end(&a.spin);
+
+ if (!igt_wait_for_spinner(&b.spin, rq_b)) {
+ pr_err("Second client failed to start\n");
+ goto err_wedged;
+ }
+
+ swap(a, b);
+ rq_a = rq_b;
+ }
+ igt_spinner_end(&a.spin);
+
+ if (engine->execlists.preempt_hang.count) {
+ pr_err("Preemption recorded x%d, depth %d; should have been suppressed!\n",
+ engine->execlists.preempt_hang.count,
+ depth);
+ err = -EINVAL;
+ goto err_client_b;
+ }
+
+ if (igt_flush_test(i915, I915_WAIT_LOCKED))
+ goto err_wedged;
+ }
+
+ err = 0;
+err_client_b:
+ preempt_client_fini(&b);
+err_client_a:
+ preempt_client_fini(&a);
+err_unlock:
+ if (igt_flush_test(i915, I915_WAIT_LOCKED))
+ err = -EIO;
+ intel_runtime_pm_put(i915, wakeref);
+ mutex_unlock(&i915->drm.struct_mutex);
+ return err;
+
+err_wedged:
+ igt_spinner_end(&b.spin);
+ igt_spinner_end(&a.spin);
+ i915_gem_set_wedged(i915);
+ err = -EIO;
+ goto err_client_b;
+}
+
+static int live_chain_preempt(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct intel_engine_cs *engine;
+ struct preempt_client hi, lo;
+ enum intel_engine_id id;
+ intel_wakeref_t wakeref;
+ int err = -ENOMEM;
+
+ /*
+ * Build a chain AB...BA between two contexts (A, B) and request
+ * preemption of the last request. It should then complete before
+ * the previously submitted spinner in B.
+ */
+
+ if (!HAS_LOGICAL_RING_PREEMPTION(i915))
+ return 0;
+
+ mutex_lock(&i915->drm.struct_mutex);
+ wakeref = intel_runtime_pm_get(i915);
+
+ if (preempt_client_init(i915, &hi))
+ goto err_unlock;
+
+ if (preempt_client_init(i915, &lo))
+ goto err_client_hi;
+
+ for_each_engine(engine, i915, id) {
+ struct i915_sched_attr attr = {
+ .priority = I915_USER_PRIORITY(I915_PRIORITY_MAX),
+ };
+ int count, i;
+
+ for_each_prime_number_from(count, 1, 32) { /* must fit ring! */
+ struct i915_request *rq;
+
+ rq = igt_spinner_create_request(&hi.spin,
+ hi.ctx, engine,
+ MI_ARB_CHECK);
+ if (IS_ERR(rq))
+ goto err_wedged;
+ i915_request_add(rq);
+ if (!igt_wait_for_spinner(&hi.spin, rq))
+ goto err_wedged;
+
+ rq = igt_spinner_create_request(&lo.spin,
+ lo.ctx, engine,
+ MI_ARB_CHECK);
+ if (IS_ERR(rq))
+ goto err_wedged;
+ i915_request_add(rq);
+
+ for (i = 0; i < count; i++) {
+ rq = i915_request_alloc(engine, lo.ctx);
+ if (IS_ERR(rq))
+ goto err_wedged;
+ i915_request_add(rq);
+ }
+
+ rq = i915_request_alloc(engine, hi.ctx);
+ if (IS_ERR(rq))
+ goto err_wedged;
+ i915_request_add(rq);
+ engine->schedule(rq, &attr);
+
+ igt_spinner_end(&hi.spin);
+ if (i915_request_wait(rq, I915_WAIT_LOCKED, HZ / 5) < 0) {
+ struct drm_printer p =
+ drm_info_printer(i915->drm.dev);
+
+ pr_err("Failed to preempt over chain of %d\n",
+ count);
+ intel_engine_dump(engine, &p,
+ "%s\n", engine->name);
+ goto err_wedged;
+ }
+ igt_spinner_end(&lo.spin);
+ }
+ }
+
+ err = 0;
+err_client_lo:
+ preempt_client_fini(&lo);
+err_client_hi:
+ preempt_client_fini(&hi);
+err_unlock:
+ if (igt_flush_test(i915, I915_WAIT_LOCKED))
+ err = -EIO;
+ intel_runtime_pm_put(i915, wakeref);
+ mutex_unlock(&i915->drm.struct_mutex);
+ return err;
+
+err_wedged:
+ igt_spinner_end(&hi.spin);
+ igt_spinner_end(&lo.spin);
+ i915_gem_set_wedged(i915);
+ err = -EIO;
+ goto err_client_lo;
+}
+
static int live_preempt_hang(void *arg)
{
struct drm_i915_private *i915 = arg;
@@ -270,6 +514,7 @@ static int live_preempt_hang(void *arg)
struct igt_spinner spin_hi, spin_lo;
struct intel_engine_cs *engine;
enum intel_engine_id id;
+ intel_wakeref_t wakeref;
int err = -ENOMEM;
if (!HAS_LOGICAL_RING_PREEMPTION(i915))
@@ -279,7 +524,7 @@ static int live_preempt_hang(void *arg)
return 0;
mutex_lock(&i915->drm.struct_mutex);
- intel_runtime_pm_get(i915);
+ wakeref = intel_runtime_pm_get(i915);
if (igt_spinner_init(&spin_hi, i915))
goto err_unlock;
@@ -374,7 +619,7 @@ err_spin_hi:
igt_spinner_fini(&spin_hi);
err_unlock:
igt_flush_test(i915, I915_WAIT_LOCKED);
- intel_runtime_pm_put(i915);
+ intel_runtime_pm_put(i915, wakeref);
mutex_unlock(&i915->drm.struct_mutex);
return err;
}
@@ -522,7 +767,7 @@ static int smoke_crescendo(struct preempt_smoke *smoke, unsigned int flags)
pr_info("Submitted %lu crescendo:%x requests across %d engines and %d contexts\n",
count, flags,
- INTEL_INFO(smoke->i915)->num_rings, smoke->ncontext);
+ RUNTIME_INFO(smoke->i915)->num_rings, smoke->ncontext);
return 0;
}
@@ -550,7 +795,7 @@ static int smoke_random(struct preempt_smoke *smoke, unsigned int flags)
pr_info("Submitted %lu random:%x requests across %d engines and %d contexts\n",
count, flags,
- INTEL_INFO(smoke->i915)->num_rings, smoke->ncontext);
+ RUNTIME_INFO(smoke->i915)->num_rings, smoke->ncontext);
return 0;
}
@@ -562,6 +807,7 @@ static int live_preempt_smoke(void *arg)
.ncontext = 1024,
};
const unsigned int phase[] = { 0, BATCH };
+ intel_wakeref_t wakeref;
int err = -ENOMEM;
u32 *cs;
int n;
@@ -576,7 +822,7 @@ static int live_preempt_smoke(void *arg)
return -ENOMEM;
mutex_lock(&smoke.i915->drm.struct_mutex);
- intel_runtime_pm_get(smoke.i915);
+ wakeref = intel_runtime_pm_get(smoke.i915);
smoke.batch = i915_gem_object_create_internal(smoke.i915, PAGE_SIZE);
if (IS_ERR(smoke.batch)) {
@@ -627,7 +873,7 @@ err_ctx:
err_batch:
i915_gem_object_put(smoke.batch);
err_unlock:
- intel_runtime_pm_put(smoke.i915);
+ intel_runtime_pm_put(smoke.i915, wakeref);
mutex_unlock(&smoke.i915->drm.struct_mutex);
kfree(smoke.contexts);
@@ -640,6 +886,8 @@ int intel_execlists_live_selftests(struct drm_i915_private *i915)
SUBTEST(live_sanitycheck),
SUBTEST(live_preempt),
SUBTEST(live_late_preempt),
+ SUBTEST(live_suppress_self_preempt),
+ SUBTEST(live_chain_preempt),
SUBTEST(live_preempt_hang),
SUBTEST(live_preempt_smoke),
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.