redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

drm/i915/guc: Extract guc_init from guc_init_hw

Browse source 
After GPU reset, GuC HW needs to be reinitialized (with FW reload).
Unfortunately, we're doing some extra work there (mostly allocating stuff),
work that can be moved to guc_init and called once at driver load time.

As a side effect we're no longer hitting an assert in
i915_ggtt_enable_guc on suspend/resume.

v2: Do not duplicate disable_communication / reset_guc_interrupts
v3: Add proper teardown after rebase

References: 04f7b24ecc ("drm/i915/guc: Assert that we switch between known ggtt->invalidate functions")
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171213221352.7173-3-michal.winiarski@intel.com
This commit is contained in:
Michał Winiarski 2017-12-13 23:13:48 +01:00 committed by Chris Wilson
parent 3176ff49bc
commit 61b5c1587d
4 changed files with 61 additions and 31 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/gpu/drm/i915/i915_drv.c
View file

@ -617,6 +617,7 @@ static void i915_gem_fini(struct drm_i915_private *dev_priv)
mutex_lock(&dev_priv->drm.struct_mutex);
intel_uc_fini_hw(dev_priv);
intel_uc_fini(dev_priv);
i915_gem_cleanup_engines(dev_priv);
i915_gem_contexts_fini(dev_priv);
mutex_unlock(&dev_priv->drm.struct_mutex);

8
drivers/gpu/drm/i915/i915_gem.c
View file

@ -5196,10 +5196,14 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
intel_init_gt_powersave(dev_priv);
ret = i915_gem_init_hw(dev_priv);
ret = intel_uc_init(dev_priv);
if (ret)
goto err_pm;
ret = i915_gem_init_hw(dev_priv);
if (ret)
goto err_uc_init;
/*
* Despite its name intel_init_clock_gating applies both display
* clock gating workarounds; GT mmio workarounds and the occasional
@ -5240,6 +5244,8 @@ err_init_hw:
i915_gem_wait_for_idle(dev_priv, I915_WAIT_LOCKED);
i915_gem_contexts_lost(dev_priv);
intel_uc_fini_hw(dev_priv);
err_uc_init:
intel_uc_fini(dev_priv);
err_pm:
if (ret != -EIO) {
intel_cleanup_gt_powersave(dev_priv);

81
drivers/gpu/drm/i915/intel_uc.c
View file

@ -214,6 +214,51 @@ void intel_uc_fini_wq(struct drm_i915_private *dev_priv)
intel_guc_fini_wq(&dev_priv->guc);
}
int intel_uc_init(struct drm_i915_private *dev_priv)
{
struct intel_guc *guc = &dev_priv->guc;
int ret;
if (!USES_GUC(dev_priv))
return 0;
if (!HAS_GUC(dev_priv))
return -ENODEV;
ret = intel_guc_init(guc);
if (ret)
return ret;
if (USES_GUC_SUBMISSION(dev_priv)) {
/*
* This is stuff we need to have available at fw load time
* if we are planning to enable submission later
*/
ret = intel_guc_submission_init(guc);
if (ret) {
intel_guc_fini(guc);
return ret;
}
}
return 0;
}
void intel_uc_fini(struct drm_i915_private *dev_priv)
{
struct intel_guc *guc = &dev_priv->guc;
if (!USES_GUC(dev_priv))
return;
GEM_BUG_ON(!HAS_GUC(dev_priv));
if (USES_GUC_SUBMISSION(dev_priv))
intel_guc_submission_fini(guc);
intel_guc_fini(guc);
}
int intel_uc_init_hw(struct drm_i915_private *dev_priv)
{
struct intel_guc *guc = &dev_priv->guc;
@ -223,28 +268,11 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
if (!USES_GUC(dev_priv))
return 0;
if (!HAS_GUC(dev_priv)) {
ret = -ENODEV;
goto err_out;
}
GEM_BUG_ON(!HAS_GUC(dev_priv));
guc_disable_communication(guc);
gen9_reset_guc_interrupts(dev_priv);
ret = intel_guc_init(guc);
if (ret)
goto err_out;
if (USES_GUC_SUBMISSION(dev_priv)) {
/*
* This is stuff we need to have available at fw load time
* if we are planning to enable submission later
*/
ret = intel_guc_submission_init(guc);
if (ret)
goto err_guc;
}
/* init WOPCM */
I915_WRITE(GUC_WOPCM_SIZE, intel_guc_wopcm_size(dev_priv));
I915_WRITE(DMA_GUC_WOPCM_OFFSET,
@ -264,12 +292,12 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
*/
ret = __intel_uc_reset_hw(dev_priv);
if (ret)
goto err_submission;
goto err_out;
if (USES_HUC(dev_priv)) {
ret = intel_huc_init_hw(huc);
if (ret)
goto err_submission;
goto err_out;
}
intel_guc_init_params(guc);
@ -322,11 +350,6 @@ err_communication:
guc_disable_communication(guc);
err_log_capture:
guc_capture_load_err_log(guc);
err_submission:
if (USES_GUC_SUBMISSION(dev_priv))
intel_guc_submission_fini(guc);
err_guc:
intel_guc_fini(guc);
err_out:
/*
* Note that there is no fallback as either user explicitly asked for
@ -348,15 +371,13 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
if (!USES_GUC(dev_priv))
return;
GEM_BUG_ON(!HAS_GUC(dev_priv));
if (USES_GUC_SUBMISSION(dev_priv))
intel_guc_submission_disable(guc);
guc_disable_communication(guc);
if (USES_GUC_SUBMISSION(dev_priv)) {
if (USES_GUC_SUBMISSION(dev_priv))
gen9_disable_guc_interrupts(dev_priv);
intel_guc_submission_fini(guc);
}
intel_guc_fini(guc);
}

2
drivers/gpu/drm/i915/intel_uc.h
View file

@ -37,6 +37,8 @@ int intel_uc_init_wq(struct drm_i915_private *dev_priv);
void intel_uc_fini_wq(struct drm_i915_private *dev_priv);
int intel_uc_init_hw(struct drm_i915_private *dev_priv);
void intel_uc_fini_hw(struct drm_i915_private *dev_priv);
int intel_uc_init(struct drm_i915_private *dev_priv);
void intel_uc_fini(struct drm_i915_private *dev_priv);
static inline bool intel_uc_is_using_guc(void)
{