drm/i915/guc: Simplify preparation of GuC parameter block

Definition of the parameters block passed to GuC is about to change.
Slightly refactor code now to make upcoming patch smaller.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: John Spotswood <john.a.spotswood@intel.com>
Reviewed-by: John Spotswood <john.a.spotswood@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

1 files changed, 23 insertions, 15 deletions

diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index c4ac29309fcc..0d37b5564fbb 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -340,19 +340,8 @@ static u32 guc_ctl_log_params_flags(struct intel_guc *guc)
 	return flags;
 }
 
-/*
- * Initialise the GuC parameter block before starting the firmware
- * transfer. These parameters are read by the firmware on startup
- * and cannot be changed thereafter.
- */
-void intel_guc_init_params(struct intel_guc *guc)
+static void guc_prepare_params(struct intel_guc *guc, u32 *params)
 {
-	struct drm_i915_private *dev_priv = guc_to_i915(guc);
-	u32 params[GUC_CTL_MAX_DWORDS];
-	int i;
-
-	memset(params, 0, sizeof(params));
-
 	/*
 	 * GuC ARAT increment is 10 ns. GuC default scheduler quantum is one
 	 * second. This ARAR is calculated by:
@@ -367,9 +356,12 @@ void intel_guc_init_params(struct intel_guc *guc)
 	params[GUC_CTL_LOG_PARAMS]  = guc_ctl_log_params_flags(guc);
 	params[GUC_CTL_DEBUG] = guc_ctl_debug_flags(guc);
 	params[GUC_CTL_CTXINFO] = guc_ctl_ctxinfo_flags(guc);
+}
 
-	for (i = 0; i < GUC_CTL_MAX_DWORDS; i++)
-		DRM_DEBUG_DRIVER("param[%2d] = %#x\n", i, params[i]);
+static void guc_write_params(struct intel_guc *guc, const u32 *params)
+{
+	struct drm_i915_private *dev_priv = guc_to_i915(guc);
+	int i;
 
 	/*
 	 * All SOFT_SCRATCH registers are in FORCEWAKE_BLITTER domain and
@@ -380,12 +372,28 @@ void intel_guc_init_params(struct intel_guc *guc)
 
 	I915_WRITE(SOFT_SCRATCH(0), 0);
 
-	for (i = 0; i < GUC_CTL_MAX_DWORDS; i++)
+	for (i = 0; i < GUC_CTL_MAX_DWORDS; i++) {
+		DRM_DEBUG_DRIVER("param[%2d] = %#x\n", i, params[i]);
 		I915_WRITE(SOFT_SCRATCH(1 + i), params[i]);
+	}
 
 	intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_BLITTER);
 }
 
+/*
+ * Initialise the GuC parameter block before starting the firmware
+ * transfer. These parameters are read by the firmware on startup
+ * and cannot be changed thereafter.
+ */
+void intel_guc_init_params(struct intel_guc *guc)
+{
+	u32 params[GUC_CTL_MAX_DWORDS];
+
+	memset(params, 0, sizeof(params));
+	guc_prepare_params(guc, params);
+	guc_write_params(guc, params);
+}
+
 int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len,
 		       u32 *response_buf, u32 response_buf_size)
 {