iommu/vtd: Remove iommu_alloc_pages_node()

Intel is the only thing that uses this now, convert to the size versions,
trying to avoid PAGE_SHIFT.

Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/23-v4-c8663abbb606+3f7-iommu_pages_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: jgunthorpe

drivers/iommu/intel/iommu.h

@@ -493,14 +493,13 @@ struct q_inval {
 
 /* Page Request Queue depth */
 #define PRQ_ORDER	4
-#define PRQ_RING_MASK	((0x1000 << PRQ_ORDER) - 0x20)
-#define PRQ_DEPTH	((0x1000 << PRQ_ORDER) >> 5)
+#define PRQ_SIZE	(SZ_4K << PRQ_ORDER)
+#define PRQ_RING_MASK	(PRQ_SIZE - 0x20)
+#define PRQ_DEPTH	(PRQ_SIZE >> 5)
 
 struct dmar_pci_notify_info;
 
 #ifdef CONFIG_IRQ_REMAP
-/* 1MB - maximum possible interrupt remapping table size */
-#define INTR_REMAP_PAGE_ORDER	8
 #define INTR_REMAP_TABLE_REG_SIZE	0xf
 #define INTR_REMAP_TABLE_REG_SIZE_MASK  0xf
 

drivers/iommu/intel/irq_remapping.c

@@ -530,11 +530,11 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu)
 	if (!ir_table)
 		return -ENOMEM;
 
-	ir_table_base = iommu_alloc_pages_node(iommu->node, GFP_KERNEL,
-					       INTR_REMAP_PAGE_ORDER);
+	/* 1MB - maximum possible interrupt remapping table size */
+	ir_table_base =
+		iommu_alloc_pages_node_sz(iommu->node, GFP_KERNEL, SZ_1M);
 	if (!ir_table_base) {
-		pr_err("IR%d: failed to allocate pages of order %d\n",
-		       iommu->seq_id, INTR_REMAP_PAGE_ORDER);
+		pr_err("IR%d: failed to allocate 1M of pages\n", iommu->seq_id);
 		goto out_free_table;
 	}
 

drivers/iommu/intel/pasid.c

@@ -60,7 +60,8 @@ int intel_pasid_alloc_table(struct device *dev)
 
 	size = max_pasid >> (PASID_PDE_SHIFT - 3);
 	order = size ? get_order(size) : 0;
-	dir = iommu_alloc_pages_node(info->iommu->node, GFP_KERNEL, order);
+	dir = iommu_alloc_pages_node_sz(info->iommu->node, GFP_KERNEL,
+					1 << (order + PAGE_SHIFT));
 	if (!dir) {
 		kfree(pasid_table);
 		return -ENOMEM;

drivers/iommu/intel/prq.c

@@ -290,7 +290,8 @@ int intel_iommu_enable_prq(struct intel_iommu *iommu)
 	struct iopf_queue *iopfq;
 	int irq, ret;
 
-	iommu->prq = iommu_alloc_pages_node(iommu->node, GFP_KERNEL, PRQ_ORDER);
+	iommu->prq =
+		iommu_alloc_pages_node_sz(iommu->node, GFP_KERNEL, PRQ_SIZE);
 	if (!iommu->prq) {
 		pr_warn("IOMMU: %s: Failed to allocate page request queue\n",
 			iommu->name);

drivers/iommu/iommu-pages.h

@@ -84,22 +84,6 @@ static inline bool iommu_pages_list_empty(struct iommu_pages_list *list)
 	return list_empty(&list->pages);
 }
 
-/**
- * iommu_alloc_pages_node - Allocate a zeroed page of a given order from
- *                          specific NUMA node
- * @nid: memory NUMA node id
- * @gfp: buddy allocator flags
- * @order: page order
- *
- * Returns the virtual address of the allocated page.
- * Prefer to use iommu_alloc_pages_node_lg2()
- */
-static inline void *iommu_alloc_pages_node(int nid, gfp_t gfp,
-					   unsigned int order)
-{
-	return iommu_alloc_pages_node_sz(nid, gfp, 1 << (order + PAGE_SHIFT));
-}
-
 /**
  * iommu_alloc_pages_sz - Allocate a zeroed page of a given size from
  *                          specific NUMA node