drm/i915/uc: Cleanup fw fetch on every GuC/HuC init failure

Be consistent and always perform fw fetch cleanup in GuC/HuC specific
init functions on every failure. Also while converting firmware
status to error, stop treating SELECTED as non-error, as long term
we should not see it.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190817131144.26884-3-michal.wajdeczko@intel.com

drivers/gpu/drm/i915/gt/uc/intel_guc.c

@@ -302,6 +302,7 @@ int intel_guc_init(struct intel_guc *guc)
 	intel_uc_fw_fini(&guc->fw);
 err_fetch:
 	intel_uc_fw_cleanup_fetch(&guc->fw);
+	DRM_DEV_DEBUG_DRIVER(gt->i915->drm.dev, "failed with %d\n", ret);
 	return ret;
 }
 

drivers/gpu/drm/i915/gt/uc/intel_huc.c

@@ -77,11 +77,12 @@ static void intel_huc_rsa_data_destroy(struct intel_huc *huc)
 
 int intel_huc_init(struct intel_huc *huc)
 {
+	struct drm_i915_private *i915 = huc_to_gt(huc)->i915;
 	int err;
 
 	err = intel_uc_fw_init(&huc->fw);
 	if (err)
-		return err;
+		goto out;
 
 	/*
 	 * HuC firmware image is outside GuC accessible range.
@@ -96,6 +97,9 @@ int intel_huc_init(struct intel_huc *huc)
 
 out_fini:
 	intel_uc_fw_fini(&huc->fw);
+out:
+	intel_uc_fw_cleanup_fetch(&huc->fw);
+	DRM_DEV_DEBUG_DRIVER(i915->drm.dev, "failed with %d\n", err);
 	return err;
 }
 

drivers/gpu/drm/i915/gt/uc/intel_uc.c

@@ -305,16 +305,10 @@ int intel_uc_init(struct intel_uc *uc)
 		return ret;
 
 	if (intel_uc_uses_huc(uc)) {
-		ret = intel_huc_init(huc);
-		if (ret)
-			goto out_huc;
+		intel_huc_init(huc);
 	}
 
 	return 0;
-
-out_huc:
-	intel_uc_fw_cleanup_fetch(&huc->fw);
-	return 0;
 }
 
 void intel_uc_fini(struct intel_uc *uc)

drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c

@@ -542,9 +542,11 @@ int intel_uc_fw_init(struct intel_uc_fw *uc_fw)
 		return -ENOEXEC;
 
 	err = i915_gem_object_pin_pages(uc_fw->obj);
-	if (err)
+	if (err) {
 		DRM_DEBUG_DRIVER("%s fw pin-pages err=%d\n",
 				 intel_uc_fw_type_repr(uc_fw->type), err);
+		intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_FAIL);
+	}
 
 	return err;
 }

drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h

@@ -141,6 +141,7 @@ static inline int intel_uc_fw_status_to_error(enum intel_uc_fw_status status)
 	case INTEL_UC_FIRMWARE_FAIL:
 		return -EIO;
 	case INTEL_UC_FIRMWARE_SELECTED:
+		return -ESTALE;
 	case INTEL_UC_FIRMWARE_AVAILABLE:
 	case INTEL_UC_FIRMWARE_TRANSFERRED:
 	case INTEL_UC_FIRMWARE_RUNNING: