[PATCH v5 02/22] drm/i915/slpc: Expose GuC functions for use with SLPC

[Sagar Arun Kamble]

From: Tom O'Rourke <Tom.O'Rourke at intel.com>

Expose host2guc_action for use by SLPC in intel_slpc.c.

Expose functions to allocate and release objects used
by GuC to be used for SLPC shared memory object.

v1: Updated function names as they need to be made extern. (ChrisW)

v2-v4: Rebase

v5: Commit subject update.

Signed-off-by: Tom O'Rourke <Tom.O'Rourke at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
 drivers/gpu/drm/i915/i915_guc_submission.c | 22 +++++++++++-----------
 drivers/gpu/drm/i915/intel_guc.h           |  2 ++
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 666dab7..c171f1f 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -49,7 +49,7 @@
  * Firmware writes a success/fail code back to the action register after
  * processes the request. The kernel driver polls waiting for this update and
  * then proceeds.
- * See host2guc_action()
+ * See i915_guc_action()
  *
  * Doorbells:
  * Doorbells are interrupts to uKernel. A doorbell is a single cache line (QW)
@@ -77,7 +77,7 @@ static inline bool host2guc_action_response(struct drm_i915_private *dev_priv,
 	return GUC2HOST_IS_RESPONSE(val);
 }
 
-static int host2guc_action(struct intel_guc *guc, u32 *data, u32 len)
+int i915_guc_action(struct intel_guc *guc, u32 *data, u32 len)
 {
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
 	u32 status;
@@ -143,7 +143,7 @@ static int host2guc_allocate_doorbell(struct intel_guc *guc,
 	data[0] = HOST2GUC_ACTION_ALLOCATE_DOORBELL;
 	data[1] = client->ctx_index;
 
-	return host2guc_action(guc, data, 2);
+	return i915_guc_action(guc, data, 2);
 }
 
 static int host2guc_release_doorbell(struct intel_guc *guc,
@@ -154,7 +154,7 @@ static int host2guc_release_doorbell(struct intel_guc *guc,
 	data[0] = HOST2GUC_ACTION_DEALLOCATE_DOORBELL;
 	data[1] = client->ctx_index;
 
-	return host2guc_action(guc, data, 2);
+	return i915_guc_action(guc, data, 2);
 }
 
 static int host2guc_sample_forcewake(struct intel_guc *guc,
@@ -171,7 +171,7 @@ static int host2guc_sample_forcewake(struct intel_guc *guc,
 		/* bit 0 and 1 are for Render and Media domain separately */
 		data[1] = GUC_FORCEWAKE_RENDER | GUC_FORCEWAKE_MEDIA;
 
-	return host2guc_action(guc, data, ARRAY_SIZE(data));
+	return i915_guc_action(guc, data, ARRAY_SIZE(data));
 }
 
 static int host2guc_logbuffer_flush_complete(struct intel_guc *guc)
@@ -180,7 +180,7 @@ static int host2guc_logbuffer_flush_complete(struct intel_guc *guc)
 
 	data[0] = HOST2GUC_ACTION_LOG_BUFFER_FILE_FLUSH_COMPLETE;
 
-	return host2guc_action(guc, data, 1);
+	return i915_guc_action(guc, data, 1);
 }
 
 static int host2guc_force_logbuffer_flush(struct intel_guc *guc)
@@ -190,7 +190,7 @@ static int host2guc_force_logbuffer_flush(struct intel_guc *guc)
 	data[0] = HOST2GUC_ACTION_FORCE_LOG_BUFFER_FLUSH;
 	data[1] = 0;
 
-	return host2guc_action(guc, data, 2);
+	return i915_guc_action(guc, data, 2);
 }
 
 static int host2guc_logging_control(struct intel_guc *guc, u32 control_val)
@@ -200,7 +200,7 @@ static int host2guc_logging_control(struct intel_guc *guc, u32 control_val)
 	data[0] = HOST2GUC_ACTION_UK_LOG_ENABLE_LOGGING;
 	data[1] = control_val;
 
-	return host2guc_action(guc, data, 2);
+	return i915_guc_action(guc, data, 2);
 }
 
 /*
@@ -672,7 +672,7 @@ static void i915_guc_submit(struct drm_i915_gem_request *rq)
  *
  * Return:	A i915_vma if successful, otherwise an ERR_PTR.
  */
-static struct i915_vma *guc_allocate_vma(struct intel_guc *guc, u32 size)
+struct i915_vma *guc_allocate_vma(struct intel_guc *guc, u32 size)
 {
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
 	struct drm_i915_gem_object *obj;
@@ -1583,7 +1583,7 @@ int intel_guc_suspend(struct drm_device *dev)
 	/* first page is shared data with GuC */
 	data[2] = i915_ggtt_offset(ctx->engine[RCS].state);
 
-	return host2guc_action(guc, data, ARRAY_SIZE(data));
+	return i915_guc_action(guc, data, ARRAY_SIZE(data));
 }
 
 
@@ -1611,7 +1611,7 @@ int intel_guc_resume(struct drm_device *dev)
 	/* first page is shared data with GuC */
 	data[2] = i915_ggtt_offset(ctx->engine[RCS].state);
 
-	return host2guc_action(guc, data, ARRAY_SIZE(data));
+	return i915_guc_action(guc, data, ARRAY_SIZE(data));
 }
 
 void i915_guc_capture_logs(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index 0053258..dad4a23 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -189,5 +189,7 @@ struct intel_guc {
 void i915_guc_register(struct drm_i915_private *dev_priv);
 void i915_guc_unregister(struct drm_i915_private *dev_priv);
 int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val);
+int i915_guc_action(struct intel_guc *guc, u32 *data, u32 len);
+struct i915_vma *guc_allocate_vma(struct intel_guc *guc, u32 size);
 
 #endif
-- 
1.9.1