From b9f78d675230a9f65611600496235cdbd369d55d Mon Sep 17 00:00:00 2001 From: Tvrtko Ursulin Date: Fri, 30 Nov 2018 09:52:11 +0000 Subject: [PATCH] drm/i915/selftests: Fix live_workarounds to actually do resets The test was missing some magic ingredients to actually trigger the resets. In case of the full reset we need the I915_RESET_HANDOFF flag set, and in case of engine reset we need a busy request. Thanks to Chris for helping with reset magic. v2: * Grab RPM ref over reset. Signed-off-by: Tvrtko Ursulin Cc: Chris Wilson Reviewed-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20181130095211.23849-1-tvrtko.ursulin@linux.intel.com --- .../drm/i915/selftests/intel_workarounds.c | 65 +++++++++++++++---- 1 file changed, 53 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/i915/selftests/intel_workarounds.c b/drivers/gpu/drm/i915/selftests/intel_workarounds.c index d1a0923d2f38..80396b3592f5 100644 --- a/drivers/gpu/drm/i915/selftests/intel_workarounds.c +++ b/drivers/gpu/drm/i915/selftests/intel_workarounds.c @@ -6,6 +6,7 @@ #include "../i915_selftest.h" +#include "igt_spinner.h" #include "igt_wedge_me.h" #include "mock_context.h" @@ -159,35 +160,57 @@ out_put: static int do_device_reset(struct intel_engine_cs *engine) { - i915_reset(engine->i915, ENGINE_MASK(engine->id), NULL); + set_bit(I915_RESET_HANDOFF, &engine->i915->gpu_error.flags); + i915_reset(engine->i915, ENGINE_MASK(engine->id), "live_workarounds"); return 0; } static int do_engine_reset(struct intel_engine_cs *engine) { - return i915_reset_engine(engine, NULL); + return i915_reset_engine(engine, "live_workarounds"); } -static int switch_to_scratch_context(struct intel_engine_cs *engine) +static int +switch_to_scratch_context(struct intel_engine_cs *engine, + struct igt_spinner *spin) { struct i915_gem_context *ctx; struct i915_request *rq; + int err = 0; ctx = kernel_context(engine->i915); if (IS_ERR(ctx)) return PTR_ERR(ctx); intel_runtime_pm_get(engine->i915); - rq = i915_request_alloc(engine, ctx); + + if (spin) + rq = igt_spinner_create_request(spin, ctx, engine, MI_NOOP); + else + rq = i915_request_alloc(engine, ctx); + intel_runtime_pm_put(engine->i915); kernel_context_close(ctx); - if (IS_ERR(rq)) - return PTR_ERR(rq); + + if (IS_ERR(rq)) { + spin = NULL; + err = PTR_ERR(rq); + goto err; + } i915_request_add(rq); - return 0; + if (spin && !igt_wait_for_spinner(spin, rq)) { + pr_err("Spinner failed to start\n"); + err = -ETIMEDOUT; + } + +err: + if (err && spin) + igt_spinner_end(spin); + + return err; } static int check_whitelist_across_reset(struct intel_engine_cs *engine, @@ -195,10 +218,22 @@ static int check_whitelist_across_reset(struct intel_engine_cs *engine, const struct whitelist *w, const char *name) { + struct drm_i915_private *i915 = engine->i915; + bool want_spin = reset == do_engine_reset; struct i915_gem_context *ctx; + struct igt_spinner spin; int err; - ctx = kernel_context(engine->i915); + pr_info("Checking %d whitelisted registers (RING_NONPRIV) [%s]\n", + w->count, name); + + if (want_spin) { + err = igt_spinner_init(&spin, i915); + if (err) + return err; + } + + ctx = kernel_context(i915); if (IS_ERR(ctx)) return PTR_ERR(ctx); @@ -208,11 +243,19 @@ static int check_whitelist_across_reset(struct intel_engine_cs *engine, goto out; } - err = switch_to_scratch_context(engine); + err = switch_to_scratch_context(engine, want_spin ? &spin : NULL); if (err) goto out; + intel_runtime_pm_get(i915); err = reset(engine); + intel_runtime_pm_put(i915); + + if (want_spin) { + igt_spinner_end(&spin); + igt_spinner_fini(&spin); + } + if (err) { pr_err("%s reset failed\n", name); goto out; @@ -227,7 +270,7 @@ static int check_whitelist_across_reset(struct intel_engine_cs *engine, kernel_context_close(ctx); - ctx = kernel_context(engine->i915); + ctx = kernel_context(i915); if (IS_ERR(ctx)) return PTR_ERR(ctx); @@ -259,8 +302,6 @@ static int live_reset_whitelist(void *arg) if (!whitelist_build(engine, &w)) return 0; - pr_info("Checking %d whitelisted registers (RING_NONPRIV)\n", w.count); - set_bit(I915_RESET_BACKOFF, &error->flags); set_bit(I915_RESET_ENGINE + engine->id, &error->flags); -- 2.39.5