iommu: Rename iommu_create_device_direct_mappings()

It will be used to create firmware mappings which require a paging
domain and mappings installed at specific IOVA.

Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

drivers/iommu/iommu.c

@@ -134,8 +134,8 @@ static void __iommu_group_set_domain_nofail(struct iommu_group *group,
 
 static int iommu_setup_default_domain(struct iommu_group *group,
 				      int target_type);
-static int iommu_create_device_direct_mappings(struct iommu_domain *domain,
-					       struct device *dev);
+static int iommu_create_device_fw_mappings(struct iommu_domain *domain,
+					   struct device *dev);
 static ssize_t iommu_group_store_type(struct iommu_group *group,
 				      const char *buf, size_t count);
 static struct group_device *iommu_group_alloc_device(struct iommu_group *group,
@@ -641,7 +641,7 @@ static int __iommu_probe_device(struct device *dev, struct list_head *group_list
 	list_add_tail(&gdev->list, &group->devices);
 	WARN_ON(group->default_domain && !group->domain);
 	if (group->default_domain)
-		iommu_create_device_direct_mappings(group->default_domain, dev);
+		iommu_create_device_fw_mappings(group->default_domain, dev);
 	if (group->domain) {
 		ret = __iommu_device_set_domain(group, dev, group->domain, NULL,
 						0);
@@ -1170,8 +1170,8 @@ int iommu_group_set_name(struct iommu_group *group, const char *name)
 }
 EXPORT_SYMBOL_GPL(iommu_group_set_name);
 
-static int iommu_create_device_direct_mappings(struct iommu_domain *domain,
-					       struct device *dev)
+static int iommu_create_device_fw_mappings(struct iommu_domain *domain,
+					   struct device *dev)
 {
 	struct iommu_resv_region *entry;
 	struct list_head mappings;
@@ -3017,7 +3017,7 @@ static int iommu_setup_default_domain(struct iommu_group *group,
 	struct iommu_domain *old_dom = group->default_domain;
 	struct group_device *gdev;
 	struct iommu_domain *dom;
-	bool direct_failed;
+	bool fw_failed;
 	int req_type;
 	int ret;
 
@@ -3047,10 +3047,10 @@ static int iommu_setup_default_domain(struct iommu_group *group,
 	 * mapped before their device is attached, in order to guarantee
 	 * continuity with any FW activity
 	 */
-	direct_failed = false;
+	fw_failed = false;
 	for_each_group_device(group, gdev) {
-		if (iommu_create_device_direct_mappings(dom, gdev->dev)) {
-			direct_failed = true;
+		if (iommu_create_device_fw_mappings(dom, gdev->dev)) {
+			fw_failed = true;
 			dev_warn_once(
 				gdev->dev->iommu->iommu_dev->dev,
 				"IOMMU driver was not able to establish FW requested direct mapping.");
@@ -3082,9 +3082,9 @@ static int iommu_setup_default_domain(struct iommu_group *group,
 	 * trying again after attaching. If this happens it means the device
 	 * will not continuously have the IOMMU_RESV_DIRECT map.
 	 */
-	if (direct_failed) {
+	if (fw_failed) {
 		for_each_group_device(group, gdev) {
-			ret = iommu_create_device_direct_mappings(dom, gdev->dev);
+			ret = iommu_create_device_fw_mappings(dom, gdev->dev);
 			if (ret)
 				goto err_restore_domain;
 		}