[PATCH 1/3] drm/i915/guc: Move notification code into virtual function

From: Michal Wajdeczko <michal.wajdeczko@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 1/3] drm/i915/guc: Move notification code into virtual function
Date: Tue,  2 May 2017 12:39:35 +0000	[thread overview]
Message-ID: <20170502123937.53556-1-michal.wajdeczko@intel.com> (raw)

Prepare for alternate GuC notification mechanism.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
---
 drivers/gpu/drm/i915/intel_uc.c | 10 +++++++++-
 drivers/gpu/drm/i915/intel_uc.h |  7 +++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 7fd75ca..72f49e6 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -94,12 +94,20 @@ void intel_uc_sanitize_options(struct drm_i915_private *dev_priv)
 		i915.enable_guc_submission = HAS_GUC_SCHED(dev_priv);
 }
 
+static void guc_write_irq_trigger(struct intel_guc *guc)
+{
+	struct drm_i915_private *dev_priv = guc_to_i915(guc);
+
+	I915_WRITE(GUC_SEND_INTERRUPT, GUC_SEND_TRIGGER);
+}
+
 void intel_uc_init_early(struct drm_i915_private *dev_priv)
 {
 	struct intel_guc *guc = &dev_priv->guc;
 
 	mutex_init(&guc->send_mutex);
 	guc->send = intel_guc_send_nop;
+	guc->notify = guc_write_irq_trigger;
 }
 
 static void fetch_uc_fw(struct drm_i915_private *dev_priv,
@@ -413,7 +421,7 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len)
 
 	POSTING_READ(SOFT_SCRATCH(i - 1));
 
-	I915_WRITE(GUC_SEND_INTERRUPT, GUC_SEND_TRIGGER);
+	intel_guc_notify(guc);
 
 	/*
 	 * No GuC command should ever take longer than 10ms.
diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index 1e0eecd..097289b 100644
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -210,6 +210,9 @@ struct intel_guc {
 
 	/* GuC's FW specific send function */
 	int (*send)(struct intel_guc *guc, const u32 *data, u32 len);
+
+	/* GuC's FW specific notify function */
+	void (*notify)(struct intel_guc *guc);
 };
 
 struct intel_huc {
@@ -233,6 +236,10 @@ static inline int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 l
 {
 	return guc->send(guc, action, len);
 }
+static inline void intel_guc_notify(struct intel_guc *guc)
+{
+	guc->notify(guc);
+}
 
 /* intel_guc_loader.c */
 int intel_guc_select_fw(struct intel_guc *guc);
-- 
2.7.4

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