[Intel-gfx] [PATCH 10/10] drm/i915: Lift intel_engines_resume() to callers
Chris Wilson
chris at chris-wilson.co.uk
Sat Jun 22 21:20:55 UTC 2019
Since the reset path wants to recover the engines itself, it only wants
to reinitialise the hardware using i915_gem_init_hw(). Pull the call to
intel_engines_resume() to the module init/resume path so we can avoid it
during reset.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/gem/i915_gem_pm.c | 7 +-
drivers/gpu/drm/i915/gt/intel_engine_pm.h | 2 -
drivers/gpu/drm/i915/gt/intel_gt_pm.c | 21 ++-
drivers/gpu/drm/i915/gt/intel_gt_pm.h | 2 +-
drivers/gpu/drm/i915/gt/intel_reset.c | 21 ++-
drivers/gpu/drm/i915/i915_gem.c | 173 +++++++++-------------
6 files changed, 116 insertions(+), 110 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pm.c b/drivers/gpu/drm/i915/gem/i915_gem_pm.c
index 6b730bd4d72f..4d774376f5b8 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_pm.c
@@ -254,14 +254,15 @@ void i915_gem_resume(struct drm_i915_private *i915)
i915_gem_restore_gtt_mappings(i915);
i915_gem_restore_fences(i915);
+ if (i915_gem_init_hw(i915))
+ goto err_wedged;
+
/*
* As we didn't flush the kernel context before suspend, we cannot
* guarantee that the context image is complete. So let's just reset
* it and start again.
*/
- intel_gt_resume(&i915->gt);
-
- if (i915_gem_init_hw(i915))
+ if (intel_gt_resume(&i915->gt))
goto err_wedged;
intel_uc_resume(i915);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_pm.h b/drivers/gpu/drm/i915/gt/intel_engine_pm.h
index 7d057cdcd919..015ac72d7ad0 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_pm.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_pm.h
@@ -31,6 +31,4 @@ void intel_engine_park(struct intel_engine_cs *engine);
void intel_engine_init__pm(struct intel_engine_cs *engine);
-int intel_engines_resume(struct drm_i915_private *i915);
-
#endif /* INTEL_ENGINE_PM_H */
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
index dda0eb64b72d..edd50697d5e2 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
@@ -5,6 +5,7 @@
*/
#include "i915_drv.h"
+#include "intel_engine_pm.h"
#include "intel_gt_pm.h"
#include "intel_pm.h"
#include "intel_wakeref.h"
@@ -122,10 +123,11 @@ void intel_gt_sanitize(struct intel_gt *gt, bool force)
intel_engine_reset(engine, false);
}
-void intel_gt_resume(struct intel_gt *gt)
+int intel_gt_resume(struct intel_gt *gt)
{
struct intel_engine_cs *engine;
enum intel_engine_id id;
+ int err = 0;
/*
* After resume, we may need to poke into the pinned kernel
@@ -133,9 +135,12 @@ void intel_gt_resume(struct intel_gt *gt)
* Only the kernel contexts should remain pinned over suspend,
* allowing us to fixup the user contexts on their first pin.
*/
+ intel_gt_pm_get(gt);
for_each_engine(engine, gt->i915, id) {
struct intel_context *ce;
+ intel_engine_pm_get(engine);
+
ce = engine->kernel_context;
if (ce)
ce->ops->reset(ce);
@@ -143,5 +148,19 @@ void intel_gt_resume(struct intel_gt *gt)
ce = engine->preempt_context;
if (ce)
ce->ops->reset(ce);
+
+ engine->serial++; /* kernel context lost */
+ err = engine->resume(engine);
+
+ intel_engine_pm_put(engine);
+ if (err) {
+ dev_err(gt->i915->drm.dev,
+ "Failed to restart %s (%d)\n",
+ engine->name, err);
+ break;
+ }
}
+ intel_gt_pm_put(gt);
+
+ return err;
}
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.h b/drivers/gpu/drm/i915/gt/intel_gt_pm.h
index 4dbb92cf58d7..ba960e1fc209 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.h
@@ -22,6 +22,6 @@ void intel_gt_pm_put(struct intel_gt *gt);
void intel_gt_pm_init_early(struct intel_gt *gt);
void intel_gt_sanitize(struct intel_gt *gt, bool force);
-void intel_gt_resume(struct intel_gt *gt);
+int intel_gt_resume(struct intel_gt *gt);
#endif /* INTEL_GT_PM_H */
diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c
index de28c2373c2f..16b4f810ddf2 100644
--- a/drivers/gpu/drm/i915/gt/intel_reset.c
+++ b/drivers/gpu/drm/i915/gt/intel_reset.c
@@ -951,6 +951,21 @@ static int do_reset(struct drm_i915_private *i915,
return gt_reset(i915, stalled_mask);
}
+static int resume(struct drm_i915_private *i915)
+{
+ struct intel_engine_cs *engine;
+ enum intel_engine_id id;
+ int ret;
+
+ for_each_engine(engine, i915, id) {
+ ret = engine->resume(engine);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
/**
* i915_reset - reset chip after a hang
* @i915: #drm_i915_private to reset
@@ -1025,9 +1040,13 @@ void i915_reset(struct drm_i915_private *i915,
if (ret) {
DRM_ERROR("Failed to initialise HW following reset (%d)\n",
ret);
- goto error;
+ goto taint;
}
+ ret = resume(i915);
+ if (ret)
+ goto taint;
+
i915_queue_hangcheck(i915);
finish:
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index deecbe128e5b..5cc3a75d521a 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -46,7 +46,6 @@
#include "gem/i915_gem_ioctls.h"
#include "gem/i915_gem_pm.h"
#include "gem/i915_gemfs.h"
-#include "gt/intel_engine_pm.h"
#include "gt/intel_gt.h"
#include "gt/intel_gt_pm.h"
#include "gt/intel_mocs.h"
@@ -1192,12 +1191,17 @@ static void init_unused_rings(struct intel_gt *gt)
}
}
-static int init_hw(struct intel_gt *gt)
+int i915_gem_init_hw(struct drm_i915_private *i915)
{
- struct drm_i915_private *i915 = gt->i915;
- struct intel_uncore *uncore = gt->uncore;
+ struct intel_uncore *uncore = &i915->uncore;
+ struct intel_gt *gt = &i915->gt;
int ret;
+ BUG_ON(!i915->kernel_context);
+ ret = i915_terminally_wedged(i915);
+ if (ret)
+ return ret;
+
gt->last_init_time = ktime_get();
/* Double layer security blanket, see i915_gem_init() */
@@ -1248,51 +1252,10 @@ static int init_hw(struct intel_gt *gt)
intel_mocs_init_l3cc_table(gt);
- intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
-
- return 0;
-
-out:
- intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
-
- return ret;
-}
-
-int i915_gem_init_hw(struct drm_i915_private *i915)
-{
- struct intel_uncore *uncore = &i915->uncore;
- int ret;
-
- BUG_ON(!i915->kernel_context);
- ret = i915_terminally_wedged(i915);
- if (ret)
- return ret;
-
- /* Double layer security blanket, see i915_gem_init() */
- intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
-
- ret = init_hw(&i915->gt);
- if (ret)
- goto err_init;
-
- /* Only when the HW is re-initialised, can we replay the requests */
- ret = intel_engines_resume(i915);
- if (ret)
- goto err_engines;
-
- intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
-
intel_engines_set_scheduler_caps(i915);
- return 0;
-
-err_engines:
- intel_uc_fini_hw(i915);
-err_init:
+out:
intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
-
- intel_engines_set_scheduler_caps(i915);
-
return ret;
}
@@ -1449,28 +1412,28 @@ static int intel_engines_verify_workarounds(struct drm_i915_private *i915)
return err;
}
-int i915_gem_init(struct drm_i915_private *dev_priv)
+int i915_gem_init(struct drm_i915_private *i915)
{
int ret;
/* We need to fallback to 4K pages if host doesn't support huge gtt. */
- if (intel_vgpu_active(dev_priv) && !intel_vgpu_has_huge_gtt(dev_priv))
- mkwrite_device_info(dev_priv)->page_sizes =
+ if (intel_vgpu_active(i915) && !intel_vgpu_has_huge_gtt(i915))
+ mkwrite_device_info(i915)->page_sizes =
I915_GTT_PAGE_SIZE_4K;
- dev_priv->mm.unordered_timeline = dma_fence_context_alloc(1);
+ i915->mm.unordered_timeline = dma_fence_context_alloc(1);
- intel_timelines_init(dev_priv);
+ intel_timelines_init(i915);
- ret = i915_gem_init_userptr(dev_priv);
+ ret = i915_gem_init_userptr(i915);
if (ret)
return ret;
- ret = intel_uc_init_misc(dev_priv);
+ ret = intel_uc_init_misc(i915);
if (ret)
return ret;
- ret = intel_wopcm_init(&dev_priv->wopcm);
+ ret = intel_wopcm_init(&i915->wopcm);
if (ret)
goto err_uc_misc;
@@ -1480,50 +1443,55 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
* we hold the forcewake during initialisation these problems
* just magically go away.
*/
- mutex_lock(&dev_priv->drm.struct_mutex);
- intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
+ mutex_lock(&i915->drm.struct_mutex);
+ intel_uncore_forcewake_get(&i915->uncore, FORCEWAKE_ALL);
- ret = i915_init_ggtt(dev_priv);
+ ret = i915_init_ggtt(i915);
if (ret) {
GEM_BUG_ON(ret == -EIO);
goto err_unlock;
}
- ret = i915_gem_init_scratch(dev_priv,
- IS_GEN(dev_priv, 2) ? SZ_256K : PAGE_SIZE);
+ ret = i915_gem_init_scratch(i915,
+ IS_GEN(i915, 2) ? SZ_256K : PAGE_SIZE);
if (ret) {
GEM_BUG_ON(ret == -EIO);
goto err_ggtt;
}
- ret = intel_engines_setup(dev_priv);
+ ret = intel_engines_setup(i915);
if (ret) {
GEM_BUG_ON(ret == -EIO);
goto err_unlock;
}
- ret = i915_gem_contexts_init(dev_priv);
+ ret = i915_gem_contexts_init(i915);
if (ret) {
GEM_BUG_ON(ret == -EIO);
goto err_scratch;
}
- ret = intel_engines_init(dev_priv);
+ ret = intel_engines_init(i915);
if (ret) {
GEM_BUG_ON(ret == -EIO);
goto err_context;
}
- intel_init_gt_powersave(dev_priv);
+ intel_init_gt_powersave(i915);
- ret = intel_uc_init(dev_priv);
+ ret = intel_uc_init(i915);
if (ret)
goto err_pm;
- ret = i915_gem_init_hw(dev_priv);
+ ret = i915_gem_init_hw(i915);
if (ret)
goto err_uc_init;
+ /* Only when the HW is re-initialised, can we replay the requests */
+ ret = intel_gt_resume(&i915->gt);
+ if (ret)
+ goto err_init_hw;
+
/*
* Despite its name intel_init_clock_gating applies both display
* clock gating workarounds; GT mmio workarounds and the occasional
@@ -1533,28 +1501,28 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
*
* FIXME: break up the workarounds and apply them at the right time!
*/
- intel_init_clock_gating(dev_priv);
+ intel_init_clock_gating(i915);
- ret = intel_engines_verify_workarounds(dev_priv);
+ ret = intel_engines_verify_workarounds(i915);
if (ret)
- goto err_init_hw;
+ goto err_gt;
- ret = __intel_engines_record_defaults(dev_priv);
+ ret = __intel_engines_record_defaults(i915);
if (ret)
- goto err_init_hw;
+ goto err_gt;
if (i915_inject_load_failure()) {
ret = -ENODEV;
- goto err_init_hw;
+ goto err_gt;
}
if (i915_inject_load_failure()) {
ret = -EIO;
- goto err_init_hw;
+ goto err_gt;
}
- intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
- mutex_unlock(&dev_priv->drm.struct_mutex);
+ intel_uncore_forcewake_put(&i915->uncore, FORCEWAKE_ALL);
+ mutex_unlock(&i915->drm.struct_mutex);
return 0;
@@ -1564,66 +1532,67 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
* HW as irrevisibly wedged, but keep enough state around that the
* driver doesn't explode during runtime.
*/
-err_init_hw:
- mutex_unlock(&dev_priv->drm.struct_mutex);
+err_gt:
+ mutex_unlock(&i915->drm.struct_mutex);
- i915_gem_set_wedged(dev_priv);
- i915_gem_suspend(dev_priv);
- i915_gem_suspend_late(dev_priv);
+ i915_gem_set_wedged(i915);
+ i915_gem_suspend(i915);
+ i915_gem_suspend_late(i915);
- i915_gem_drain_workqueue(dev_priv);
+ i915_gem_drain_workqueue(i915);
- mutex_lock(&dev_priv->drm.struct_mutex);
- intel_uc_fini_hw(dev_priv);
+ mutex_lock(&i915->drm.struct_mutex);
+err_init_hw:
+ intel_uc_fini_hw(i915);
err_uc_init:
- intel_uc_fini(dev_priv);
+ intel_uc_fini(i915);
err_pm:
if (ret != -EIO) {
- intel_cleanup_gt_powersave(dev_priv);
- intel_engines_cleanup(dev_priv);
+ intel_cleanup_gt_powersave(i915);
+ intel_engines_cleanup(i915);
}
err_context:
if (ret != -EIO)
- i915_gem_contexts_fini(dev_priv);
+ i915_gem_contexts_fini(i915);
err_scratch:
- i915_gem_fini_scratch(dev_priv);
+ i915_gem_fini_scratch(i915);
err_ggtt:
err_unlock:
- intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
- mutex_unlock(&dev_priv->drm.struct_mutex);
+ intel_uncore_forcewake_put(&i915->uncore, FORCEWAKE_ALL);
+ mutex_unlock(&i915->drm.struct_mutex);
err_uc_misc:
- intel_uc_fini_misc(dev_priv);
+ intel_uc_fini_misc(i915);
if (ret != -EIO) {
- i915_gem_cleanup_userptr(dev_priv);
- intel_timelines_fini(dev_priv);
+ i915_gem_cleanup_userptr(i915);
+ intel_timelines_fini(i915);
}
if (ret == -EIO) {
- mutex_lock(&dev_priv->drm.struct_mutex);
+ mutex_lock(&i915->drm.struct_mutex);
/*
* Allow engine initialisation to fail by marking the GPU as
* wedged. But we only want to do this where the GPU is angry,
* for all other failure, such as an allocation failure, bail.
*/
- if (!i915_reset_failed(dev_priv)) {
- i915_load_error(dev_priv,
+ if (!i915_reset_failed(i915)) {
+ i915_load_error(i915,
"Failed to initialize GPU, declaring it wedged!\n");
- i915_gem_set_wedged(dev_priv);
+ i915_gem_set_wedged(i915);
}
/* Minimal basic recovery for KMS */
- ret = i915_ggtt_enable_hw(dev_priv);
- i915_gem_restore_gtt_mappings(dev_priv);
- i915_gem_restore_fences(dev_priv);
- intel_init_clock_gating(dev_priv);
+ ret = i915_ggtt_enable_hw(i915);
+ i915_gem_restore_gtt_mappings(i915);
+ i915_gem_restore_fences(i915);
+ intel_init_clock_gating(i915);
- mutex_unlock(&dev_priv->drm.struct_mutex);
+ mutex_unlock(&i915->drm.struct_mutex);
}
- i915_gem_drain_freed_objects(dev_priv);
+ i915_gem_drain_freed_objects(i915);
return ret;
}
--
2.20.1
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