[Intel-gfx] [PATCH v5 12/17] drm/i915/guc: Correctly handle GuC interrupts on Gen11
Michal Wajdeczko
michal.wajdeczko at intel.com
Mon May 27 18:36:08 UTC 2019
From: Oscar Mateo <oscar.mateo at intel.com>
Starting Gen11 GuC shares interrupt registers with SG unit
instead of PM. But for now we don't care about SG interrupts.
v2: (Chris)
v3: rebased (Michal)
v4: more bspec pages, use macros, update commit msg (Michal Wi)
Bspec: 19820, 19840, 19841, 20176
Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski at intel.com>
---
drivers/gpu/drm/i915/i915_irq.c | 53 +++++++++++++++++++++++++++-
drivers/gpu/drm/i915/i915_irq.h | 3 ++
drivers/gpu/drm/i915/i915_reg.h | 4 +++
drivers/gpu/drm/i915/intel_guc.c | 3 ++
drivers/gpu/drm/i915/intel_guc_reg.h | 18 ++++++++++
5 files changed, 80 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 607709a8c229..ca8f4226e598 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -624,6 +624,42 @@ void gen9_disable_guc_interrupts(struct drm_i915_private *dev_priv)
gen9_reset_guc_interrupts(dev_priv);
}
+void gen11_reset_guc_interrupts(struct drm_i915_private *i915)
+{
+ spin_lock_irq(&i915->irq_lock);
+ gen11_reset_one_iir(i915, 0, GEN11_GUC);
+ spin_unlock_irq(&i915->irq_lock);
+}
+
+void gen11_enable_guc_interrupts(struct drm_i915_private *dev_priv)
+{
+ spin_lock_irq(&dev_priv->irq_lock);
+ if (!dev_priv->guc.interrupts.enabled) {
+ u32 events = REG_FIELD_PREP(ENGINE1_MASK,
+ GEN11_GUC_INTR_GUC2HOST);
+
+ WARN_ON_ONCE(gen11_reset_one_iir(dev_priv, 0, GEN11_GUC));
+ I915_WRITE(GEN11_GUC_SG_INTR_ENABLE, events);
+ I915_WRITE(GEN11_GUC_SG_INTR_MASK, ~events);
+ dev_priv->guc.interrupts.enabled = true;
+ }
+ spin_unlock_irq(&dev_priv->irq_lock);
+}
+
+void gen11_disable_guc_interrupts(struct drm_i915_private *dev_priv)
+{
+ spin_lock_irq(&dev_priv->irq_lock);
+ dev_priv->guc.interrupts.enabled = false;
+
+ I915_WRITE(GEN11_GUC_SG_INTR_MASK, ~0);
+ I915_WRITE(GEN11_GUC_SG_INTR_ENABLE, 0);
+
+ spin_unlock_irq(&dev_priv->irq_lock);
+ synchronize_irq(dev_priv->drm.irq);
+
+ gen11_reset_guc_interrupts(dev_priv);
+}
+
/**
* bdw_update_port_irq - update DE port interrupt
* @dev_priv: driver private
@@ -1893,6 +1929,12 @@ static void gen9_guc_irq_handler(struct drm_i915_private *dev_priv, u32 gt_iir)
intel_guc_to_host_event_handler(&dev_priv->guc);
}
+static void gen11_guc_irq_handler(struct drm_i915_private *i915, u16 iir)
+{
+ if (iir & GEN11_GUC_INTR_GUC2HOST)
+ intel_guc_to_host_event_handler(&i915->guc);
+}
+
static void i9xx_pipestat_irq_reset(struct drm_i915_private *dev_priv)
{
enum pipe pipe;
@@ -3015,6 +3057,9 @@ static void
gen11_other_irq_handler(struct drm_i915_private * const i915,
const u8 instance, const u16 iir)
{
+ if (instance == OTHER_GUC_INSTANCE)
+ return gen11_guc_irq_handler(i915, iir);
+
if (instance == OTHER_GTPM_INSTANCE)
return gen11_rps_irq_handler(i915, iir);
@@ -3545,6 +3590,8 @@ static void gen11_gt_irq_reset(struct drm_i915_private *dev_priv)
I915_WRITE(GEN11_GPM_WGBOXPERF_INTR_ENABLE, 0);
I915_WRITE(GEN11_GPM_WGBOXPERF_INTR_MASK, ~0);
+ I915_WRITE(GEN11_GUC_SG_INTR_ENABLE, 0);
+ I915_WRITE(GEN11_GUC_SG_INTR_MASK, ~0);
}
static void gen11_irq_reset(struct drm_device *dev)
@@ -4200,6 +4247,10 @@ static void gen11_gt_irq_postinstall(struct drm_i915_private *dev_priv)
dev_priv->pm_imr = ~dev_priv->pm_ier;
I915_WRITE(GEN11_GPM_WGBOXPERF_INTR_ENABLE, 0);
I915_WRITE(GEN11_GPM_WGBOXPERF_INTR_MASK, ~0);
+
+ /* Same thing for GuC interrupts */
+ I915_WRITE(GEN11_GUC_SG_INTR_ENABLE, 0);
+ I915_WRITE(GEN11_GUC_SG_INTR_MASK, ~0);
}
static void icp_irq_postinstall(struct drm_device *dev)
@@ -4707,7 +4758,7 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
for (i = 0; i < MAX_L3_SLICES; ++i)
dev_priv->l3_parity.remap_info[i] = NULL;
- if (HAS_GUC_SCHED(dev_priv))
+ if (HAS_GUC_SCHED(dev_priv) && INTEL_GEN(dev_priv) < 11)
dev_priv->pm_guc_events = GEN9_GUC_TO_HOST_INT_EVENT;
/* Let's track the enabled rps events */
diff --git a/drivers/gpu/drm/i915/i915_irq.h b/drivers/gpu/drm/i915/i915_irq.h
index 0ccd0d90919d..cb25dd213308 100644
--- a/drivers/gpu/drm/i915/i915_irq.h
+++ b/drivers/gpu/drm/i915/i915_irq.h
@@ -110,5 +110,8 @@ void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
void gen9_reset_guc_interrupts(struct drm_i915_private *dev_priv);
void gen9_enable_guc_interrupts(struct drm_i915_private *dev_priv);
void gen9_disable_guc_interrupts(struct drm_i915_private *dev_priv);
+void gen11_reset_guc_interrupts(struct drm_i915_private *i915);
+void gen11_enable_guc_interrupts(struct drm_i915_private *i915);
+void gen11_disable_guc_interrupts(struct drm_i915_private *i915);
#endif /* __I915_IRQ_H__ */
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index edae92f5a45e..73990295d627 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -290,6 +290,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define OTHER_CLASS 4
#define MAX_ENGINE_CLASS 4
+#define OTHER_GUC_INSTANCE 0
#define OTHER_GTPM_INSTANCE 1
#define MAX_ENGINE_INSTANCE 3
@@ -7493,6 +7494,9 @@ enum {
#define GEN11_CRYPTO_RSVD_INTR_MASK _MMIO(0x1900f0)
#define GEN11_GUNIT_CSME_INTR_MASK _MMIO(0x1900f4)
+#define ENGINE1_MASK REG_GENMASK(31, 16)
+#define ENGINE0_MASK REG_GENMASK(15, 0)
+
#define ILK_DISPLAY_CHICKEN2 _MMIO(0x42004)
/* Required on all Ironlake and Sandybridge according to the B-Spec. */
#define ILK_ELPIN_409_SELECT (1 << 25)
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index 28642bf977bd..cbe4b8df15fd 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -88,6 +88,9 @@ void intel_guc_init_early(struct intel_guc *guc)
guc->handler = intel_guc_to_host_event_handler_nop;
if (INTEL_GEN(i915) >= 11) {
guc->notify = gen11_guc_raise_irq;
+ guc->interrupts.reset = gen11_reset_guc_interrupts;
+ guc->interrupts.enable = gen11_enable_guc_interrupts;
+ guc->interrupts.disable = gen11_disable_guc_interrupts;
} else {
guc->notify = gen8_guc_raise_irq;
guc->interrupts.reset = gen9_reset_guc_interrupts;
diff --git a/drivers/gpu/drm/i915/intel_guc_reg.h b/drivers/gpu/drm/i915/intel_guc_reg.h
index 7eba65795b58..a214f8b71929 100644
--- a/drivers/gpu/drm/i915/intel_guc_reg.h
+++ b/drivers/gpu/drm/i915/intel_guc_reg.h
@@ -134,4 +134,22 @@ struct guc_doorbell_info {
#define GUC_WD_VECS_IER _MMIO(0xC558)
#define GUC_PM_P24C_IER _MMIO(0xC55C)
+/* GuC Interrupt Vector */
+#define GEN11_GUC_INTR_GUC2HOST (1 << 15)
+#define GEN11_GUC_INTR_EXEC_ERROR (1 << 14)
+#define GEN11_GUC_INTR_DISPLAY_EVENT (1 << 13)
+#define GEN11_GUC_INTR_SEM_SIG (1 << 12)
+#define GEN11_GUC_INTR_IOMMU2GUC (1 << 11)
+#define GEN11_GUC_INTR_DOORBELL_RANG (1 << 10)
+#define GEN11_GUC_INTR_DMA_DONE (1 << 9)
+#define GEN11_GUC_INTR_FATAL_ERROR (1 << 8)
+#define GEN11_GUC_INTR_NOTIF_ERROR (1 << 7)
+#define GEN11_GUC_INTR_SW_INT_6 (1 << 6)
+#define GEN11_GUC_INTR_SW_INT_5 (1 << 5)
+#define GEN11_GUC_INTR_SW_INT_4 (1 << 4)
+#define GEN11_GUC_INTR_SW_INT_3 (1 << 3)
+#define GEN11_GUC_INTR_SW_INT_2 (1 << 2)
+#define GEN11_GUC_INTR_SW_INT_1 (1 << 1)
+#define GEN11_GUC_INTR_SW_INT_0 (1 << 0)
+
#endif
--
2.19.2
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