diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index fe01d090f9bb..17fca3ba343e 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -2180,7 +2180,7 @@ static int i915_drm_resume_early(struct drm_device *dev) intel_power_domains_resume(dev_priv); - intel_engines_sanitize(dev_priv); + intel_engines_sanitize(dev_priv, true); enable_rpm_wakeref_asserts(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index e872d0a179f0..4b1656d2482e 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3418,8 +3418,7 @@ bool i915_gem_unset_wedged(struct drm_i915_private *i915) i915_retire_requests(i915); GEM_BUG_ON(i915->gt.active_requests); - if (!intel_gpu_reset(i915, ALL_ENGINES)) - intel_engines_sanitize(i915); + intel_engines_sanitize(i915, false); /* * Undo nop_submit_request. We prevent all new i915 requests from @@ -5023,8 +5022,6 @@ void __i915_gem_object_release_unless_active(struct drm_i915_gem_object *obj) void i915_gem_sanitize(struct drm_i915_private *i915) { - int err; - GEM_TRACE("\n"); mutex_lock(&i915->drm.struct_mutex); @@ -5049,11 +5046,7 @@ void i915_gem_sanitize(struct drm_i915_private *i915) * it may impact the display and we are uncertain about the stability * of the reset, so this could be applied to even earlier gen. */ - err = -ENODEV; - if (INTEL_GEN(i915) >= 5 && intel_has_gpu_reset(i915)) - err = WARN_ON(intel_gpu_reset(i915, ALL_ENGINES)); - if (!err) - intel_engines_sanitize(i915); + intel_engines_sanitize(i915, false); intel_uncore_forcewake_put(i915, FORCEWAKE_ALL); intel_runtime_pm_put(i915); diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index 0d342f2b44a5..dd4aff2b256e 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -82,6 +82,7 @@ .display.has_overlay = 1, \ .display.overlay_needs_physical = 1, \ .display.has_gmch_display = 1, \ + .gpu_reset_clobbers_display = true, \ .hws_needs_physical = 1, \ .unfenced_needs_alignment = 1, \ .ring_mask = RENDER_RING, \ @@ -122,6 +123,7 @@ static const struct intel_device_info intel_i865g_info = { GEN(3), \ .num_pipes = 2, \ .display.has_gmch_display = 1, \ + .gpu_reset_clobbers_display = true, \ .ring_mask = RENDER_RING, \ .has_snoop = true, \ .has_coherent_ggtt = true, \ @@ -198,6 +200,7 @@ static const struct intel_device_info intel_pineview_info = { .num_pipes = 2, \ .display.has_hotplug = 1, \ .display.has_gmch_display = 1, \ + .gpu_reset_clobbers_display = true, \ .ring_mask = RENDER_RING, \ .has_snoop = true, \ .has_coherent_ggtt = true, \ @@ -228,6 +231,7 @@ static const struct intel_device_info intel_g45_info = { GEN4_FEATURES, PLATFORM(INTEL_G45), .ring_mask = RENDER_RING | BSD_RING, + .gpu_reset_clobbers_display = false, }; static const struct intel_device_info intel_gm45_info = { @@ -237,6 +241,7 @@ static const struct intel_device_info intel_gm45_info = { .display.has_fbc = 1, .display.supports_tv = 1, .ring_mask = RENDER_RING | BSD_RING, + .gpu_reset_clobbers_display = false, }; #define GEN5_FEATURES \ diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h index 76735869e32d..957c6527f76b 100644 --- a/drivers/gpu/drm/i915/intel_device_info.h +++ b/drivers/gpu/drm/i915/intel_device_info.h @@ -89,6 +89,7 @@ enum intel_ppgtt { func(is_alpha_support); \ /* Keep has_* in alphabetical order */ \ func(has_64bit_reloc); \ + func(gpu_reset_clobbers_display); \ func(has_reset_engine); \ func(has_fpga_dbg); \ func(has_guc); \ diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 665b483bbbcc..699ee6946891 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3746,8 +3746,8 @@ __intel_display_resume(struct drm_device *dev, static bool gpu_reset_clobbers_display(struct drm_i915_private *dev_priv) { - return intel_has_gpu_reset(dev_priv) && - INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv); + return (INTEL_INFO(dev_priv)->gpu_reset_clobbers_display && + intel_has_gpu_reset(dev_priv)); } void intel_prepare_reset(struct drm_i915_private *dev_priv) diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 2aa3e0d7e6a3..5990f8500bca 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -1043,22 +1043,34 @@ void intel_engines_reset_default_submission(struct drm_i915_private *i915) engine->set_default_submission(engine); } +static bool reset_engines(struct drm_i915_private *i915) +{ + if (INTEL_INFO(i915)->gpu_reset_clobbers_display) + return false; + + return intel_gpu_reset(i915, ALL_ENGINES) == 0; +} + /** * intel_engines_sanitize: called after the GPU has lost power * @i915: the i915 device + * @force: ignore a failed reset and sanitize engine state anyway * * Anytime we reset the GPU, either with an explicit GPU reset or through a * PCI power cycle, the GPU loses state and we must reset our state tracking * to match. Note that calling intel_engines_sanitize() if the GPU has not * been reset results in much confusion! */ -void intel_engines_sanitize(struct drm_i915_private *i915) +void intel_engines_sanitize(struct drm_i915_private *i915, bool force) { struct intel_engine_cs *engine; enum intel_engine_id id; GEM_TRACE("\n"); + if (!reset_engines(i915) && !force) + return; + for_each_engine(engine, i915, id) { if (engine->reset.reset) engine->reset.reset(engine, NULL); diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 69287e77b929..3c1366c58cf3 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -1019,7 +1019,7 @@ gen8_emit_ggtt_write(u32 *cs, u32 value, u32 gtt_offset) return cs; } -void intel_engines_sanitize(struct drm_i915_private *i915); +void intel_engines_sanitize(struct drm_i915_private *i915, bool force); bool intel_engine_is_idle(struct intel_engine_cs *engine); bool intel_engines_are_idle(struct drm_i915_private *dev_priv); diff --git a/drivers/gpu/drm/i915/selftests/i915_gem.c b/drivers/gpu/drm/i915/selftests/i915_gem.c index d0aa19d17653..bdcc53e15e75 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem.c @@ -121,7 +121,7 @@ static void pm_resume(struct drm_i915_private *i915) */ intel_runtime_pm_get(i915); - intel_engines_sanitize(i915); + intel_engines_sanitize(i915, false); i915_gem_sanitize(i915); i915_gem_resume(i915);