drm/i915: Downgrade scare message for unknown HuC firmware

If we haven't shipped and enabled firmware for a particular platform,
there is nothing the user can do about it. Don't scare the user with an
unactionable, unidentifiable warning!

<6> [310.769452] i915 0000:00:02.0: GuC: No firmware known for this platform!
<4> [310.769458] [drm] HuC: No firmware known for this platform!

Unify both GuC/HuC messages to include the device for which we lack the
firmware, and provide the platform name as an aide-memoire.

v2: Move and refine the message to common site of intel_uc_fw_fetch.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190108150246.1471-1-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/intel_guc_fw.c

@@ -77,10 +77,6 @@ static void guc_fw_select(struct intel_uc_fw *guc_fw)
 		guc_fw->path = I915_KBL_GUC_UCODE;
 		guc_fw->major_ver_wanted = KBL_FW_MAJOR;
 		guc_fw->minor_ver_wanted = KBL_FW_MINOR;
-	} else {
-		dev_info(dev_priv->drm.dev,
-			 "%s: No firmware known for this platform!\n",
-			 intel_uc_fw_type_repr(guc_fw->type));
 	}
 }
 

drivers/gpu/drm/i915/intel_huc_fw.c

@@ -76,9 +76,6 @@ static void huc_fw_select(struct intel_uc_fw *huc_fw)
 		huc_fw->path = I915_KBL_HUC_UCODE;
 		huc_fw->major_ver_wanted = KBL_HUC_FW_MAJOR;
 		huc_fw->minor_ver_wanted = KBL_HUC_FW_MINOR;
-	} else {
-		DRM_WARN("%s: No firmware known for this platform!\n",
-			 intel_uc_fw_type_repr(huc_fw->type));
 	}
 }
 

drivers/gpu/drm/i915/intel_uc_fw.c

@@ -46,12 +46,17 @@ void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
 	size_t size;
 	int err;
 
+	if (!uc_fw->path) {
+		dev_info(dev_priv->drm.dev,
+			 "%s: No firmware was defined for %s!\n",
+			 intel_uc_fw_type_repr(uc_fw->type),
+			 intel_platform_name(INTEL_INFO(dev_priv)->platform));
+		return;
+	}
+
 	DRM_DEBUG_DRIVER("%s fw fetch %s\n",
 			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->path);
 
-	if (!uc_fw->path)
-		return;
-
 	uc_fw->fetch_status = INTEL_UC_FIRMWARE_PENDING;
 	DRM_DEBUG_DRIVER("%s fw fetch %s\n",
 			 intel_uc_fw_type_repr(uc_fw->type),