On legacy platforms, KCR HW enabling is done at the time
the mei component interface is loaded. It's also disabled
during unbind. For MTL onwards, we don't need a separate
component driver to send FW messages via GSC-CS.
Thus, immediately enable KCR HW on PXP's init, fini
and resume.
Signed-off-by: Alan Previn <alan.previn.teres.alexis@xxxxxxxxx>
---
drivers/gpu/drm/i915/pxp/intel_pxp.c | 52 ++++++++++++++++++------
drivers/gpu/drm/i915/pxp/intel_pxp.h | 4 +-
drivers/gpu/drm/i915/pxp/intel_pxp_pm.c | 10 ++---
drivers/gpu/drm/i915/pxp/intel_pxp_tee.c | 13 +-----
4 files changed, 49 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c
index 809b49f59594..90e739345924 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp.c
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c
@@ -143,10 +143,12 @@ static void pxp_init_full(struct intel_pxp *pxp)
if (ret)
return;
- if (pxp->uses_gsccs)
+ if (pxp->uses_gsccs) {
ret = intel_pxp_gsccs_init(pxp);
- else
+ intel_pxp_init_hw(pxp, true);
+ } else {
ret = intel_pxp_tee_component_init(pxp);
+ }
if (ret)
goto out_context;
@@ -249,10 +251,12 @@ void intel_pxp_fini(struct drm_i915_private *i915)
i915->pxp->arb_is_valid = false;
- if (i915->pxp->uses_gsccs)
+ if (i915->pxp->uses_gsccs) {
+ intel_pxp_fini_hw(i915->pxp, true);
intel_pxp_gsccs_fini(i915->pxp);
- else
+ } else {
intel_pxp_tee_component_fini(i915->pxp);
+ }
destroy_vcs_context(i915->pxp);
@@ -304,8 +308,9 @@ int intel_pxp_start(struct intel_pxp *pxp)
if (!intel_pxp_is_enabled(pxp))
return -ENODEV;
- if (wait_for(pxp_component_bound(pxp), 250))
- return -ENXIO;
+ if (!pxp->uses_gsccs)
+ if (wait_for(pxp_component_bound(pxp), 250))
+ return -ENXIO;
mutex_lock(&pxp->arb_mutex);
@@ -331,16 +336,39 @@ int intel_pxp_start(struct intel_pxp *pxp)
return ret;
}
-void intel_pxp_init_hw(struct intel_pxp *pxp)
+static void
+intel_pxp_hw_state_change(struct intel_pxp *pxp, bool enable,
+ bool skip_if_runtime_pm_off)
+{
+ intel_wakeref_t wakeref;
+
+ if (skip_if_runtime_pm_off) {
+ /* if we are suspended, the HW will be re-initialized on resume */
+ wakeref = intel_runtime_pm_get_if_in_use(&pxp->ctrl_gt->i915->runtime_pm);
+ if (!wakeref)
+ return;
+ }
+
+ if (enable) {
+ kcr_pxp_enable(pxp);
+ intel_pxp_irq_enable(pxp);
+ } else {
+ kcr_pxp_disable(pxp);
+ intel_pxp_irq_disable(pxp);
+ }
+
+ if (skip_if_runtime_pm_off)
+ intel_runtime_pm_put(&pxp->ctrl_gt->i915->runtime_pm, wakeref);
+}
+
+void intel_pxp_init_hw(struct intel_pxp *pxp, bool skip_if_runtime_pm_off)
{
- kcr_pxp_enable(pxp);
- intel_pxp_irq_enable(pxp);
+ intel_pxp_hw_state_change(pxp, true, skip_if_runtime_pm_off);
}
-void intel_pxp_fini_hw(struct intel_pxp *pxp)
+void intel_pxp_fini_hw(struct intel_pxp *pxp, bool skip_if_runtime_pm_off)
{
- kcr_pxp_disable(pxp);
- intel_pxp_irq_disable(pxp);
+ intel_pxp_hw_state_change(pxp, false, skip_if_runtime_pm_off);
}
int intel_pxp_key_check(struct intel_pxp *pxp,
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.h b/drivers/gpu/drm/i915/pxp/intel_pxp.h
index 04440fada711..6c1fe3f0a20c 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp.h
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp.h
@@ -20,8 +20,8 @@ bool intel_pxp_is_active(const struct intel_pxp *pxp);
int intel_pxp_init(struct drm_i915_private *i915);
void intel_pxp_fini(struct drm_i915_private *i915);
-void intel_pxp_init_hw(struct intel_pxp *pxp);
-void intel_pxp_fini_hw(struct intel_pxp *pxp);
+void intel_pxp_init_hw(struct intel_pxp *pxp, bool skip_if_runtime_pm_off);
+void intel_pxp_fini_hw(struct intel_pxp *pxp, bool skip_if_runtime_pm_off);
void intel_pxp_mark_termination_in_progress(struct intel_pxp *pxp);
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
index 892d39cc61c1..94c1b2fe1eb2 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
@@ -29,7 +29,7 @@ void intel_pxp_suspend(struct intel_pxp *pxp)
return;
with_intel_runtime_pm(&pxp->ctrl_gt->i915->runtime_pm, wakeref) {
- intel_pxp_fini_hw(pxp);
+ intel_pxp_fini_hw(pxp, false);
pxp->hw_state_invalidated = false;
}
}
@@ -40,14 +40,14 @@ void intel_pxp_resume(struct intel_pxp *pxp)
return;
/*
- * The PXP component gets automatically unbound when we go into S3 and
+ * On Pre-MTL, PXP component gets automatically unbound when we go into S3 and
* re-bound after we come out, so in that scenario we can defer the
* hw init to the bind call.
*/
- if (!pxp->pxp_component)
+ if (!pxp->uses_gsccs & !pxp->pxp_component)
return;
- intel_pxp_init_hw(pxp);
+ intel_pxp_init_hw(pxp, false);
}
void intel_pxp_runtime_suspend(struct intel_pxp *pxp)
@@ -57,7 +57,7 @@ void intel_pxp_runtime_suspend(struct intel_pxp *pxp)
pxp->arb_is_valid = false;
- intel_pxp_fini_hw(pxp);
+ intel_pxp_fini_hw(pxp, false);
pxp->hw_state_invalidated = false;
}
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c b/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c
index d50354bfb993..9b34f2056b19 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c
@@ -141,16 +141,9 @@ static int i915_pxp_tee_component_bind(struct device *i915_kdev,
}
}
- /* if we are suspended, the HW will be re-initialized on resume */
- wakeref = intel_runtime_pm_get_if_in_use(&i915->runtime_pm);
- if (!wakeref)
- return 0;
-
/* the component is required to fully start the PXP HW */
if (intel_pxp_is_enabled(pxp))
- intel_pxp_init_hw(pxp);
-
- intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+ intel_pxp_init_hw(pxp, true);
return ret;
}
@@ -160,11 +153,9 @@ static void i915_pxp_tee_component_unbind(struct device *i915_kdev,
{
struct drm_i915_private *i915 = kdev_to_i915(i915_kdev);
struct intel_pxp *pxp = i915->pxp;
- intel_wakeref_t wakeref;
if (intel_pxp_is_enabled(pxp))
- with_intel_runtime_pm_if_in_use(&i915->runtime_pm, wakeref)
- intel_pxp_fini_hw(pxp);
+ intel_pxp_fini_hw(pxp, true);
mutex_lock(&pxp->tee_mutex);
pxp->pxp_component = NULL;
--
2.39.0
