Merge tag 'iommu-updates-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu updates from Joerg Roedel:

 - remove the bus_set_iommu() interface which became unnecesary because
   of IOMMU per-device probing

 - make the dma-iommu.h header private

 - Intel VT-d changes from Lu Baolu:
	  - Decouple PASID and PRI from SVA
	  - Add ESRTPS & ESIRTPS capability check
	  - Cleanups

 - Apple DART support for the M1 Pro/MAX SOCs

 - support for AMD IOMMUv2 page-tables for the DMA-API layer.

   The v2 page-tables are compatible with the x86 CPU page-tables. Using
   them for DMA-API prepares support for hardware-assisted IOMMU
   virtualization

 - support for MT6795 Helio X10 M4Us in the Mediatek IOMMU driver

 - some smaller fixes and cleanups

* tag 'iommu-updates-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (59 commits)
  iommu/vt-d: Avoid unnecessary global DMA cache invalidation
  iommu/vt-d: Avoid unnecessary global IRTE cache invalidation
  iommu/vt-d: Rename cap_5lp_support to cap_fl5lp_support
  iommu/vt-d: Remove pasid_set_eafe()
  iommu/vt-d: Decouple PASID & PRI enabling from SVA
  iommu/vt-d: Remove unnecessary SVA data accesses in page fault path
  dt-bindings: iommu: arm,smmu-v3: Relax order of interrupt names
  iommu: dart: Support t6000 variant
  iommu/io-pgtable-dart: Add DART PTE support for t6000
  iommu/io-pgtable: Add DART subpage protection support
  iommu/io-pgtable: Move Apple DART support to its own file
  iommu/mediatek: Add support for MT6795 Helio X10 M4Us
  iommu/mediatek: Introduce new flag TF_PORT_TO_ADDR_MT8173
  dt-bindings: mediatek: Add bindings for MT6795 M4U
  iommu/iova: Fix module config properly
  iommu/amd: Fix sparse warning
  iommu/amd: Remove outdated comment
  iommu/amd: Free domain ID after domain_flush_pages
  iommu/amd: Free domain id in error path
  iommu/virtio: Fix compile error with viommu_capable()
  ...

1 files changed, 6 insertions, 65 deletions

diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index 94ff319ae8ac..0ba817e86346 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -130,9 +130,6 @@
 #define ARM_MALI_LPAE_MEMATTR_IMP_DEF	0x88ULL
 #define ARM_MALI_LPAE_MEMATTR_WRITE_ALLOC 0x8DULL
 
-#define APPLE_DART_PTE_PROT_NO_WRITE (1<<7)
-#define APPLE_DART_PTE_PROT_NO_READ (1<<8)
-
 /* IOPTE accessors */
 #define iopte_deref(pte,d) __va(iopte_to_paddr(pte, d))
 
@@ -200,8 +197,7 @@ static void *__arm_lpae_alloc_pages(size_t size, gfp_t gfp,
 	void *pages;
 
 	VM_BUG_ON((gfp & __GFP_HIGHMEM));
-	p = alloc_pages_node(dev ? dev_to_node(dev) : NUMA_NO_NODE,
-			     gfp | __GFP_ZERO, order);
+	p = alloc_pages_node(dev_to_node(dev), gfp | __GFP_ZERO, order);
 	if (!p)
 		return NULL;
 
@@ -406,15 +402,6 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data,
 {
 	arm_lpae_iopte pte;
 
-	if (data->iop.fmt == APPLE_DART) {
-		pte = 0;
-		if (!(prot & IOMMU_WRITE))
-			pte |= APPLE_DART_PTE_PROT_NO_WRITE;
-		if (!(prot & IOMMU_READ))
-			pte |= APPLE_DART_PTE_PROT_NO_READ;
-		return pte;
-	}
-
 	if (data->iop.fmt == ARM_64_LPAE_S1 ||
 	    data->iop.fmt == ARM_32_LPAE_S1) {
 		pte = ARM_LPAE_PTE_nG;
@@ -1107,52 +1094,6 @@ out_free_data:
 	return NULL;
 }
 
-static struct io_pgtable *
-apple_dart_alloc_pgtable(struct io_pgtable_cfg *cfg, void *cookie)
-{
-	struct arm_lpae_io_pgtable *data;
-	int i;
-
-	if (cfg->oas > 36)
-		return NULL;
-
-	data = arm_lpae_alloc_pgtable(cfg);
-	if (!data)
-		return NULL;
-
-	/*
-	 * The table format itself always uses two levels, but the total VA
-	 * space is mapped by four separate tables, making the MMIO registers
-	 * an effective "level 1". For simplicity, though, we treat this
-	 * equivalently to LPAE stage 2 concatenation at level 2, with the
-	 * additional TTBRs each just pointing at consecutive pages.
-	 */
-	if (data->start_level < 1)
-		goto out_free_data;
-	if (data->start_level == 1 && data->pgd_bits > 2)
-		goto out_free_data;
-	if (data->start_level > 1)
-		data->pgd_bits = 0;
-	data->start_level = 2;
-	cfg->apple_dart_cfg.n_ttbrs = 1 << data->pgd_bits;
-	data->pgd_bits += data->bits_per_level;
-
-	data->pgd = __arm_lpae_alloc_pages(ARM_LPAE_PGD_SIZE(data), GFP_KERNEL,
-					   cfg);
-	if (!data->pgd)
-		goto out_free_data;
-
-	for (i = 0; i < cfg->apple_dart_cfg.n_ttbrs; ++i)
-		cfg->apple_dart_cfg.ttbr[i] =
-			virt_to_phys(data->pgd + i * ARM_LPAE_GRANULE(data));
-
-	return &data->iop;
-
-out_free_data:
-	kfree(data);
-	return NULL;
-}
-
 struct io_pgtable_init_fns io_pgtable_arm_64_lpae_s1_init_fns = {
 	.alloc	= arm_64_lpae_alloc_pgtable_s1,
 	.free	= arm_lpae_free_pgtable,
@@ -1178,11 +1119,6 @@ struct io_pgtable_init_fns io_pgtable_arm_mali_lpae_init_fns = {
 	.free	= arm_lpae_free_pgtable,
 };
 
-struct io_pgtable_init_fns io_pgtable_apple_dart_init_fns = {
-	.alloc	= apple_dart_alloc_pgtable,
-	.free	= arm_lpae_free_pgtable,
-};
-
 #ifdef CONFIG_IOMMU_IO_PGTABLE_LPAE_SELFTEST
 
 static struct io_pgtable_cfg *cfg_cookie __initdata;
@@ -1343,12 +1279,17 @@ static int __init arm_lpae_do_selftests(void)
 	};
 
 	int i, j, pass = 0, fail = 0;
+	struct device dev;
 	struct io_pgtable_cfg cfg = {
 		.tlb = &dummy_tlb_ops,
 		.oas = 48,
 		.coherent_walk = true,
+		.iommu_dev = &dev,
 	};
 
+	/* __arm_lpae_alloc_pages() merely needs dev_to_node() to work */
+	set_dev_node(&dev, NUMA_NO_NODE);
+
 	for (i = 0; i < ARRAY_SIZE(pgsize); ++i) {
 		for (j = 0; j < ARRAY_SIZE(ias); ++j) {
 			cfg.pgsize_bitmap = pgsize[i];