iommu/amd: Rename ats related variables

Remove nested structure and make it as 'ats_{enable/qdep}'.
Also convert 'dev_data.pri_tlp' to bit field.

No functional changes intended.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20230921092147.5930-11-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: hegdevasant

drivers/iommu/amd/amd_iommu_types.h

@@ -812,11 +812,9 @@ struct iommu_dev_data {
 	struct device *dev;
 	u16 devid;			  /* PCI Device ID */
 	bool iommu_v2;			  /* Device can make use of IOMMUv2 */
-	struct {
-		bool enabled;
-		int qdep;
-	} ats;				  /* ATS state */
-	bool pri_tlp;			  /* PASID TLB required for
+	int ats_qdep;
+	u8 ats_enabled  :1;		  /* ATS state */
+	u8 pri_tlp      :1;		  /* PASID TLB required for
 					     PPR completions */
 	bool use_vapic;			  /* Enable device to use vapic mode */
 	bool defer_attach;

drivers/iommu/amd/iommu.c

@@ -1091,7 +1091,7 @@ static void build_inv_iotlb_pasid(struct iommu_cmd *cmd, u16 devid, u32 pasid,
 }
 
 static void build_complete_ppr(struct iommu_cmd *cmd, u16 devid, u32 pasid,
-			       int status, int tag, bool gn)
+			       int status, int tag, u8 gn)
 {
 	memset(cmd, 0, sizeof(*cmd));
 
@@ -1314,7 +1314,7 @@ static int device_flush_iotlb(struct iommu_dev_data *dev_data,
 	struct iommu_cmd cmd;
 	int qdep;
 
-	qdep     = dev_data->ats.qdep;
+	qdep     = dev_data->ats_qdep;
 	iommu    = rlookup_amd_iommu(dev_data->dev);
 	if (!iommu)
 		return -EINVAL;
@@ -1365,7 +1365,7 @@ static int device_flush_dte(struct iommu_dev_data *dev_data)
 			return ret;
 	}
 
-	if (dev_data->ats.enabled)
+	if (dev_data->ats_enabled)
 		ret = device_flush_iotlb(dev_data, 0, ~0UL);
 
 	return ret;
@@ -1398,7 +1398,7 @@ static void __domain_flush_pages(struct protection_domain *domain,
 
 	list_for_each_entry(dev_data, &domain->dev_list, list) {
 
-		if (!dev_data->ats.enabled)
+		if (!dev_data->ats_enabled)
 			continue;
 
 		ret |= device_flush_iotlb(dev_data, address, size);
@@ -1718,7 +1718,7 @@ static void do_attach(struct iommu_dev_data *dev_data,
 	iommu = rlookup_amd_iommu(dev_data->dev);
 	if (!iommu)
 		return;
-	ats   = dev_data->ats.enabled;
+	ats   = dev_data->ats_enabled;
 
 	/* Update data structures */
 	dev_data->domain = domain;
@@ -1856,14 +1856,14 @@ static int attach_device(struct device *dev,
 			if (pdev_pri_ats_enable(pdev) != 0)
 				goto out;
 
-			dev_data->ats.enabled = true;
-			dev_data->ats.qdep    = pci_ats_queue_depth(pdev);
+			dev_data->ats_enabled = 1;
+			dev_data->ats_qdep    = pci_ats_queue_depth(pdev);
 			dev_data->pri_tlp     = pci_prg_resp_pasid_required(pdev);
 		}
 	} else if (amd_iommu_iotlb_sup &&
 		   pci_enable_ats(pdev, PAGE_SHIFT) == 0) {
-		dev_data->ats.enabled = true;
-		dev_data->ats.qdep    = pci_ats_queue_depth(pdev);
+		dev_data->ats_enabled = 1;
+		dev_data->ats_qdep    = pci_ats_queue_depth(pdev);
 	}
 
 skip_ats_check:
@@ -1920,10 +1920,10 @@ static void detach_device(struct device *dev)
 
 	if (domain->flags & PD_IOMMUV2_MASK && dev_data->iommu_v2)
 		pdev_iommuv2_disable(to_pci_dev(dev));
-	else if (dev_data->ats.enabled)
+	else if (dev_data->ats_enabled)
 		pci_disable_ats(to_pci_dev(dev));
 
-	dev_data->ats.enabled = false;
+	dev_data->ats_enabled = 0;
 
 out:
 	spin_unlock(&dev_data->lock);
@@ -2013,7 +2013,7 @@ static void update_device_table(struct protection_domain *domain)
 		if (!iommu)
 			continue;
 		set_dte_entry(iommu, dev_data->devid, domain,
-			      dev_data->ats.enabled, dev_data->iommu_v2);
+			      dev_data->ats_enabled, dev_data->iommu_v2);
 		clone_aliases(iommu, dev_data->dev);
 	}
 }
@@ -2612,10 +2612,10 @@ static int __flush_pasid(struct protection_domain *domain, u32 pasid,
 		   There might be non-IOMMUv2 capable devices in an IOMMUv2
 		 * domain.
 		 */
-		if (!dev_data->ats.enabled)
+		if (!dev_data->ats_enabled)
 			continue;
 
-		qdep  = dev_data->ats.qdep;
+		qdep  = dev_data->ats_qdep;
 		iommu = rlookup_amd_iommu(dev_data->dev);
 		if (!iommu)
 			continue;