Adding upstream version 6.7.7.upstream/6.7.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 557 insertions, 1466 deletions

diff --git a/drivers/iommu/amd/Kconfig b/drivers/iommu/amd/Kconfig
index 9b5fc3356b..443b2c13c3 100644
--- a/drivers/iommu/amd/Kconfig
+++ b/drivers/iommu/amd/Kconfig
@@ -10,6 +10,7 @@ config AMD_IOMMU
 	select IOMMU_API
 	select IOMMU_IOVA
 	select IOMMU_IO_PGTABLE
+	select IOMMUFD_DRIVER if IOMMUFD
 	depends on X86_64 && PCI && ACPI && HAVE_CMPXCHG_DOUBLE
 	help
 	  With this option you can enable support for AMD IOMMU hardware in
@@ -22,15 +23,6 @@ config AMD_IOMMU
 	  your BIOS for an option to enable it or if you have an IVRS ACPI
 	  table.
 
-config AMD_IOMMU_V2
-	tristate "AMD IOMMU Version 2 driver"
-	depends on AMD_IOMMU
-	select MMU_NOTIFIER
-	help
-	  This option enables support for the AMD IOMMUv2 features of the IOMMU
-	  hardware. Select this option if you want to use devices that support
-	  the PCI PRI and PASID interface.
-
 config AMD_IOMMU_DEBUGFS
 	bool "Enable AMD IOMMU internals in DebugFS"
 	depends on AMD_IOMMU && IOMMU_DEBUGFS
diff --git a/drivers/iommu/amd/Makefile b/drivers/iommu/amd/Makefile
index 773d8aa002..f454fbb156 100644
--- a/drivers/iommu/amd/Makefile
+++ b/drivers/iommu/amd/Makefile
@@ -1,4 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_AMD_IOMMU) += iommu.o init.o quirks.o io_pgtable.o io_pgtable_v2.o
 obj-$(CONFIG_AMD_IOMMU_DEBUGFS) += debugfs.o
-obj-$(CONFIG_AMD_IOMMU_V2) += iommu_v2.o
diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h
index e2857109e9..86be1edd50 100644
--- a/drivers/iommu/amd/amd_iommu.h
+++ b/drivers/iommu/amd/amd_iommu.h
@@ -38,9 +38,6 @@ extern int amd_iommu_guest_ir;
 extern enum io_pgtable_fmt amd_iommu_pgtable;
 extern int amd_iommu_gpt_level;
 
-/* IOMMUv2 specific functions */
-struct iommu_domain;
-
 bool amd_iommu_v2_supported(void);
 struct amd_iommu *get_amd_iommu(unsigned int idx);
 u8 amd_iommu_pc_get_max_banks(unsigned int idx);
@@ -51,10 +48,10 @@ int amd_iommu_pc_get_reg(struct amd_iommu *iommu, u8 bank, u8 cntr,
 int amd_iommu_pc_set_reg(struct amd_iommu *iommu, u8 bank, u8 cntr,
 			 u8 fxn, u64 *value);
 
-int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
-int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
-void amd_iommu_domain_direct_map(struct iommu_domain *dom);
-int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
+/* Device capabilities */
+int amd_iommu_pdev_enable_cap_pri(struct pci_dev *pdev);
+void amd_iommu_pdev_disable_cap_pri(struct pci_dev *pdev);
+
 int amd_iommu_flush_page(struct iommu_domain *dom, u32 pasid, u64 address);
 void amd_iommu_update_and_flush_device_table(struct protection_domain *domain);
 void amd_iommu_domain_update(struct protection_domain *domain);
@@ -87,9 +84,25 @@ static inline bool is_rd890_iommu(struct pci_dev *pdev)
 	       (pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
 }
 
-static inline bool iommu_feature(struct amd_iommu *iommu, u64 mask)
+static inline bool check_feature(u64 mask)
+{
+	return (amd_iommu_efr & mask);
+}
+
+static inline bool check_feature2(u64 mask)
+{
+	return (amd_iommu_efr2 & mask);
+}
+
+static inline int check_feature_gpt_level(void)
+{
+	return ((amd_iommu_efr >> FEATURE_GATS_SHIFT) & FEATURE_GATS_MASK);
+}
+
+static inline bool amd_iommu_gt_ppr_supported(void)
 {
-	return !!(iommu->features & mask);
+	return (check_feature(FEATURE_GT) &&
+		check_feature(FEATURE_PPR));
 }
 
 static inline u64 iommu_virt_to_phys(void *vaddr)
@@ -105,7 +118,6 @@ static inline void *iommu_phys_to_virt(unsigned long paddr)
 static inline
 void amd_iommu_domain_set_pt_root(struct protection_domain *domain, u64 root)
 {
-	atomic64_set(&domain->iop.pt_root, root);
 	domain->iop.root = (u64 *)(root & PAGE_MASK);
 	domain->iop.mode = root & 7; /* lowest 3 bits encode pgtable mode */
 }
@@ -146,8 +158,5 @@ void amd_iommu_domain_set_pgtable(struct protection_domain *domain,
 				  u64 *root, int mode);
 struct dev_table_entry *get_dev_table(struct amd_iommu *iommu);
 
-extern u64 amd_iommu_efr;
-extern u64 amd_iommu_efr2;
-
 extern bool amd_iommu_snp_en;
 #endif
diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h
index 7dc30c2b56..90b7d7950a 100644
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -97,7 +97,9 @@
 #define FEATURE_GATS_MASK	(3ULL)
 #define FEATURE_GAM_VAPIC	BIT_ULL(21)
 #define FEATURE_GIOSUP		BIT_ULL(48)
+#define FEATURE_HASUP		BIT_ULL(49)
 #define FEATURE_EPHSUP		BIT_ULL(50)
+#define FEATURE_HDSUP		BIT_ULL(52)
 #define FEATURE_SNP		BIT_ULL(63)
 
 #define FEATURE_PASID_SHIFT	32
@@ -212,6 +214,7 @@
 /* macros and definitions for device table entries */
 #define DEV_ENTRY_VALID         0x00
 #define DEV_ENTRY_TRANSLATION   0x01
+#define DEV_ENTRY_HAD           0x07
 #define DEV_ENTRY_PPR           0x34
 #define DEV_ENTRY_IR            0x3d
 #define DEV_ENTRY_IW            0x3e
@@ -371,9 +374,15 @@
 	(1ULL << (12 + (9 * (level))))
 
 /*
+ * The IOPTE dirty bit
+ */
+#define IOMMU_PTE_HD_BIT (6)
+
+/*
  * Bit value definition for I/O PTE fields
  */
 #define IOMMU_PTE_PR	BIT_ULL(0)
+#define IOMMU_PTE_HD	BIT_ULL(IOMMU_PTE_HD_BIT)
 #define IOMMU_PTE_U	BIT_ULL(59)
 #define IOMMU_PTE_FC	BIT_ULL(60)
 #define IOMMU_PTE_IR	BIT_ULL(61)
@@ -384,6 +393,7 @@
  */
 #define DTE_FLAG_V	BIT_ULL(0)
 #define DTE_FLAG_TV	BIT_ULL(1)
+#define DTE_FLAG_HAD	(3ULL << 7)
 #define DTE_FLAG_GIOV	BIT_ULL(54)
 #define DTE_FLAG_GV	BIT_ULL(55)
 #define DTE_GLX_SHIFT	(56)
@@ -413,6 +423,7 @@
 
 #define IOMMU_PAGE_MASK (((1ULL << 52) - 1) & ~0xfffULL)
 #define IOMMU_PTE_PRESENT(pte) ((pte) & IOMMU_PTE_PR)
+#define IOMMU_PTE_DIRTY(pte) ((pte) & IOMMU_PTE_HD)
 #define IOMMU_PTE_PAGE(pte) (iommu_phys_to_virt((pte) & IOMMU_PAGE_MASK))
 #define IOMMU_PTE_MODE(pte) (((pte) >> 9) & 0x07)
 
@@ -451,6 +462,10 @@
 #define PD_IOMMUV2_MASK		BIT(3) /* domain has gcr3 table */
 #define PD_GIOV_MASK		BIT(4) /* domain enable GIOV support */
 
+/* Timeout stuff */
+#define LOOP_TIMEOUT		100000
+#define MMIO_STATUS_TIMEOUT	2000000
+
 extern bool amd_iommu_dump;
 #define DUMP_printk(format, arg...)				\
 	do {							\
@@ -505,19 +520,6 @@ extern struct kmem_cache *amd_iommu_irq_cache;
 #define APERTURE_RANGE_INDEX(a)	((a) >> APERTURE_RANGE_SHIFT)
 #define APERTURE_PAGE_INDEX(a)	(((a) >> 21) & 0x3fULL)
 
-/*
- * This struct is used to pass information about
- * incoming PPR faults around.
- */
-struct amd_iommu_fault {
-	u64 address;    /* IO virtual address of the fault*/
-	u32 pasid;      /* Address space identifier */
-	u32 sbdf;	/* Originating PCI device id */
-	u16 tag;        /* PPR tag */
-	u16 flags;      /* Fault flags */
-
-};
-
 
 struct amd_iommu;
 struct iommu_domain;
@@ -544,7 +546,6 @@ struct amd_io_pgtable {
 	struct io_pgtable	iop;
 	int			mode;
 	u64			*root;
-	atomic64_t		pt_root;	/* pgtable root and pgtable mode */
 	u64			*pgd;		/* v2 pgtable pgd pointer */
 };
 
@@ -563,6 +564,7 @@ struct protection_domain {
 	int nid;		/* Node ID */
 	u64 *gcr3_tbl;		/* Guest CR3 table */
 	unsigned long flags;	/* flags to find out type of domain */
+	bool dirty_tracking;	/* dirty tracking is enabled in the domain */
 	unsigned dev_cnt;	/* devices assigned to this domain */
 	unsigned dev_iommu[MAX_IOMMUS]; /* per-IOMMU reference count */
 };
@@ -676,9 +678,6 @@ struct amd_iommu {
 	/* Extended features 2 */
 	u64 features2;
 
-	/* IOMMUv2 */
-	bool is_iommu_v2;
-
 	/* PCI device id of the IOMMU device */
 	u16 devid;
 
@@ -799,6 +798,14 @@ struct devid_map {
 	bool cmd_line;
 };
 
+#define AMD_IOMMU_DEVICE_FLAG_ATS_SUP     0x1    /* ATS feature supported */
+#define AMD_IOMMU_DEVICE_FLAG_PRI_SUP     0x2    /* PRI feature supported */
+#define AMD_IOMMU_DEVICE_FLAG_PASID_SUP   0x4    /* PASID context supported */
+/* Device may request execution on memory pages */
+#define AMD_IOMMU_DEVICE_FLAG_EXEC_SUP    0x8
+/* Device may request super-user privileges */
+#define AMD_IOMMU_DEVICE_FLAG_PRIV_SUP   0x10
+
 /*
  * This struct contains device specific data for the IOMMU
  */
@@ -811,13 +818,15 @@ struct iommu_dev_data {
 	struct protection_domain *domain; /* Domain the device is bound to */
 	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
+
+	u32 flags;			  /* Holds AMD_IOMMU_DEVICE_FLAG_<*> */
+	int ats_qdep;
+	u8 ats_enabled  :1;		  /* ATS state */
+	u8 pri_enabled  :1;		  /* PRI state */
+	u8 pasid_enabled:1;		  /* PASID state */
+	u8 pri_tlp      :1;		  /* PASID TLB required for
 					     PPR completions */
+	u8 ppr          :1;		  /* Enable device PPR support */
 	bool use_vapic;			  /* Enable device to use vapic mode */
 	bool defer_attach;
 
@@ -884,16 +893,15 @@ extern unsigned amd_iommu_aperture_order;
 /* allocation bitmap for domain ids */
 extern unsigned long *amd_iommu_pd_alloc_bitmap;
 
-/* Smallest max PASID supported by any IOMMU in the system */
-extern u32 amd_iommu_max_pasid;
-
-extern bool amd_iommu_v2_present;
-
 extern bool amd_iommu_force_isolation;
 
 /* Max levels of glxval supported */
 extern int amd_iommu_max_glx_val;
 
+/* Global EFR and EFR2 registers */
+extern u64 amd_iommu_efr;
+extern u64 amd_iommu_efr2;
+
 /*
  * This function flushes all internal caches of
  * the IOMMU used by this driver.
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index 45efb7e5d7..64bcf3df37 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -83,8 +83,6 @@
 #define ACPI_DEVFLAG_LINT1              0x80
 #define ACPI_DEVFLAG_ATSDIS             0x10000000
 
-#define LOOP_TIMEOUT	2000000
-
 #define IVRS_GET_SBDF_ID(seg, bus, dev, fn)	(((seg & 0xffff) << 16) | ((bus & 0xff) << 8) \
 						 | ((dev & 0x1f) << 3) | (fn & 0x7))
 
@@ -187,9 +185,6 @@ static int amd_iommus_present;
 bool amd_iommu_np_cache __read_mostly;
 bool amd_iommu_iotlb_sup __read_mostly = true;
 
-u32 amd_iommu_max_pasid __read_mostly = ~0;
-
-bool amd_iommu_v2_present __read_mostly;
 static bool amd_iommu_pc_present __read_mostly;
 bool amdr_ivrs_remap_support __read_mostly;
 
@@ -272,7 +267,7 @@ int amd_iommu_get_num_iommus(void)
  * Iterate through all the IOMMUs to get common EFR
  * masks among all IOMMUs and warn if found inconsistency.
  */
-static void get_global_efr(void)
+static __init void get_global_efr(void)
 {
 	struct amd_iommu *iommu;
 
@@ -304,16 +299,6 @@ static void get_global_efr(void)
 	pr_info("Using global IVHD EFR:%#llx, EFR2:%#llx\n", amd_iommu_efr, amd_iommu_efr2);
 }
 
-static bool check_feature_on_all_iommus(u64 mask)
-{
-	return !!(amd_iommu_efr & mask);
-}
-
-static inline int check_feature_gpt_level(void)
-{
-	return ((amd_iommu_efr >> FEATURE_GATS_SHIFT) & FEATURE_GATS_MASK);
-}
-
 /*
  * For IVHD type 0x11/0x40, EFR is also available via IVHD.
  * Default to IVHD EFR since it is available sooner
@@ -399,7 +384,7 @@ static void iommu_set_cwwb_range(struct amd_iommu *iommu)
 	u64 start = iommu_virt_to_phys((void *)iommu->cmd_sem);
 	u64 entry = start & PM_ADDR_MASK;
 
-	if (!check_feature_on_all_iommus(FEATURE_SNP))
+	if (!check_feature(FEATURE_SNP))
 		return;
 
 	/* Note:
@@ -869,7 +854,7 @@ static void *__init iommu_alloc_4k_pages(struct amd_iommu *iommu,
 	void *buf = (void *)__get_free_pages(gfp, order);
 
 	if (buf &&
-	    check_feature_on_all_iommus(FEATURE_SNP) &&
+	    check_feature(FEATURE_SNP) &&
 	    set_memory_4k((unsigned long)buf, (1 << order))) {
 		free_pages((unsigned long)buf, order);
 		buf = NULL;
@@ -985,14 +970,14 @@ static int iommu_ga_log_enable(struct amd_iommu *iommu)
 	iommu_feature_enable(iommu, CONTROL_GAINT_EN);
 	iommu_feature_enable(iommu, CONTROL_GALOG_EN);
 
-	for (i = 0; i < LOOP_TIMEOUT; ++i) {
+	for (i = 0; i < MMIO_STATUS_TIMEOUT; ++i) {
 		status = readl(iommu->mmio_base + MMIO_STATUS_OFFSET);
 		if (status & (MMIO_STATUS_GALOG_RUN_MASK))
 			break;
 		udelay(10);
 	}
 
-	if (WARN_ON(i >= LOOP_TIMEOUT))
+	if (WARN_ON(i >= MMIO_STATUS_TIMEOUT))
 		return -EINVAL;
 
 	return 0;
@@ -1048,7 +1033,7 @@ static void iommu_enable_xt(struct amd_iommu *iommu)
 
 static void iommu_enable_gt(struct amd_iommu *iommu)
 {
-	if (!iommu_feature(iommu, FEATURE_GT))
+	if (!check_feature(FEATURE_GT))
 		return;
 
 	iommu_feature_enable(iommu, CONTROL_GT_EN);
@@ -1987,7 +1972,7 @@ static void init_iommu_perf_ctr(struct amd_iommu *iommu)
 	u64 val;
 	struct pci_dev *pdev = iommu->dev;
 
-	if (!iommu_feature(iommu, FEATURE_PC))
+	if (!check_feature(FEATURE_PC))
 		return;
 
 	amd_iommu_pc_present = true;
@@ -2014,8 +1999,7 @@ static ssize_t amd_iommu_show_features(struct device *dev,
 				       struct device_attribute *attr,
 				       char *buf)
 {
-	struct amd_iommu *iommu = dev_to_amd_iommu(dev);
-	return sysfs_emit(buf, "%llx:%llx\n", iommu->features2, iommu->features);
+	return sysfs_emit(buf, "%llx:%llx\n", amd_iommu_efr, amd_iommu_efr2);
 }
 static DEVICE_ATTR(features, S_IRUGO, amd_iommu_show_features, NULL);
 
@@ -2051,9 +2035,9 @@ static void __init late_iommu_features_init(struct amd_iommu *iommu)
 	features = readq(iommu->mmio_base + MMIO_EXT_FEATURES);
 	features2 = readq(iommu->mmio_base + MMIO_EXT_FEATURES2);
 
-	if (!iommu->features) {
-		iommu->features = features;
-		iommu->features2 = features2;
+	if (!amd_iommu_efr) {
+		amd_iommu_efr = features;
+		amd_iommu_efr2 = features2;
 		return;
 	}
 
@@ -2061,12 +2045,12 @@ static void __init late_iommu_features_init(struct amd_iommu *iommu)
 	 * Sanity check and warn if EFR values from
 	 * IVHD and MMIO conflict.
 	 */
-	if (features != iommu->features ||
-	    features2 != iommu->features2) {
+	if (features != amd_iommu_efr ||
+	    features2 != amd_iommu_efr2) {
 		pr_warn(FW_WARN
 			"EFR mismatch. Use IVHD EFR (%#llx : %#llx), EFR2 (%#llx : %#llx).\n",
-			features, iommu->features,
-			features2, iommu->features2);
+			features, amd_iommu_efr,
+			features2, amd_iommu_efr2);
 	}
 }
 
@@ -2092,20 +2076,17 @@ static int __init iommu_init_pci(struct amd_iommu *iommu)
 
 	late_iommu_features_init(iommu);
 
-	if (iommu_feature(iommu, FEATURE_GT)) {
+	if (check_feature(FEATURE_GT)) {
 		int glxval;
-		u32 max_pasid;
 		u64 pasmax;
 
-		pasmax = iommu->features & FEATURE_PASID_MASK;
+		pasmax = amd_iommu_efr & FEATURE_PASID_MASK;
 		pasmax >>= FEATURE_PASID_SHIFT;
-		max_pasid  = (1 << (pasmax + 1)) - 1;
+		iommu->iommu.max_pasids = (1 << (pasmax + 1)) - 1;
 
-		amd_iommu_max_pasid = min(amd_iommu_max_pasid, max_pasid);
+		BUG_ON(iommu->iommu.max_pasids & ~PASID_MASK);
 
-		BUG_ON(amd_iommu_max_pasid & ~PASID_MASK);
-
-		glxval   = iommu->features & FEATURE_GLXVAL_MASK;
+		glxval   = amd_iommu_efr & FEATURE_GLXVAL_MASK;
 		glxval >>= FEATURE_GLXVAL_SHIFT;
 
 		if (amd_iommu_max_glx_val == -1)
@@ -2114,13 +2095,7 @@ static int __init iommu_init_pci(struct amd_iommu *iommu)
 			amd_iommu_max_glx_val = min(amd_iommu_max_glx_val, glxval);
 	}
 
-	if (iommu_feature(iommu, FEATURE_GT) &&
-	    iommu_feature(iommu, FEATURE_PPR)) {
-		iommu->is_iommu_v2   = true;
-		amd_iommu_v2_present = true;
-	}
-
-	if (iommu_feature(iommu, FEATURE_PPR) && alloc_ppr_log(iommu))
+	if (check_feature(FEATURE_PPR) && alloc_ppr_log(iommu))
 		return -ENOMEM;
 
 	if (iommu->cap & (1UL << IOMMU_CAP_NPCACHE)) {
@@ -2132,13 +2107,10 @@ static int __init iommu_init_pci(struct amd_iommu *iommu)
 	init_iommu_perf_ctr(iommu);
 
 	if (amd_iommu_pgtable == AMD_IOMMU_V2) {
-		if (!iommu_feature(iommu, FEATURE_GIOSUP) ||
-		    !iommu_feature(iommu, FEATURE_GT)) {
+		if (!check_feature(FEATURE_GIOSUP) ||
+		    !check_feature(FEATURE_GT)) {
 			pr_warn("Cannot enable v2 page table for DMA-API. Fallback to v1.\n");
 			amd_iommu_pgtable = AMD_IOMMU_V1;
-		} else if (iommu_default_passthrough()) {
-			pr_warn("V2 page table doesn't support passthrough mode. Fallback to v1.\n");
-			amd_iommu_pgtable = AMD_IOMMU_V1;
 		}
 	}
 
@@ -2186,35 +2158,29 @@ static int __init iommu_init_pci(struct amd_iommu *iommu)
 
 static void print_iommu_info(void)
 {
+	int i;
 	static const char * const feat_str[] = {
 		"PreF", "PPR", "X2APIC", "NX", "GT", "[5]",
 		"IA", "GA", "HE", "PC"
 	};
-	struct amd_iommu *iommu;
-
-	for_each_iommu(iommu) {
-		struct pci_dev *pdev = iommu->dev;
-		int i;
 
-		pci_info(pdev, "Found IOMMU cap 0x%x\n", iommu->cap_ptr);
+	if (amd_iommu_efr) {
+		pr_info("Extended features (%#llx, %#llx):", amd_iommu_efr, amd_iommu_efr2);
 
-		if (iommu->cap & (1 << IOMMU_CAP_EFR)) {
-			pr_info("Extended features (%#llx, %#llx):", iommu->features, iommu->features2);
-
-			for (i = 0; i < ARRAY_SIZE(feat_str); ++i) {
-				if (iommu_feature(iommu, (1ULL << i)))
-					pr_cont(" %s", feat_str[i]);
-			}
+		for (i = 0; i < ARRAY_SIZE(feat_str); ++i) {
+			if (check_feature(1ULL << i))
+				pr_cont(" %s", feat_str[i]);
+		}
 
-			if (iommu->features & FEATURE_GAM_VAPIC)
-				pr_cont(" GA_vAPIC");
+		if (check_feature(FEATURE_GAM_VAPIC))
+			pr_cont(" GA_vAPIC");
 
-			if (iommu->features & FEATURE_SNP)
-				pr_cont(" SNP");
+		if (check_feature(FEATURE_SNP))
+			pr_cont(" SNP");
 
-			pr_cont("\n");
-		}
+		pr_cont("\n");
 	}
+
 	if (irq_remapping_enabled) {
 		pr_info("Interrupt remapping enabled\n");
 		if (amd_iommu_xt_mode == IRQ_REMAP_X2APIC_MODE)
@@ -2900,19 +2866,19 @@ static void enable_iommus_vapic(void)
 		 * Need to set and poll check the GALOGRun bit to zero before
 		 * we can set/ modify GA Log registers safely.
 		 */
-		for (i = 0; i < LOOP_TIMEOUT; ++i) {
+		for (i = 0; i < MMIO_STATUS_TIMEOUT; ++i) {
 			status = readl(iommu->mmio_base + MMIO_STATUS_OFFSET);
 			if (!(status & MMIO_STATUS_GALOG_RUN_MASK))
 				break;
 			udelay(10);
 		}
 
-		if (WARN_ON(i >= LOOP_TIMEOUT))
+		if (WARN_ON(i >= MMIO_STATUS_TIMEOUT))
 			return;
 	}
 
 	if (AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir) &&
-	    !check_feature_on_all_iommus(FEATURE_GAM_VAPIC)) {
+	    !check_feature(FEATURE_GAM_VAPIC)) {
 		amd_iommu_guest_ir = AMD_IOMMU_GUEST_IR_LEGACY_GA;
 		return;
 	}
@@ -3698,9 +3664,8 @@ bool amd_iommu_v2_supported(void)
 	 * (i.e. EFR[SNPSup]=1), IOMMUv2 page table cannot be used without
 	 * setting up IOMMUv1 page table.
 	 */
-	return amd_iommu_v2_present && !amd_iommu_snp_en;
+	return amd_iommu_gt_ppr_supported() && !amd_iommu_snp_en;
 }
-EXPORT_SYMBOL(amd_iommu_v2_supported);
 
 struct amd_iommu *get_amd_iommu(unsigned int idx)
 {
@@ -3824,7 +3789,7 @@ int amd_iommu_snp_enable(void)
 		return -EINVAL;
 	}
 
-	amd_iommu_snp_en = check_feature_on_all_iommus(FEATURE_SNP);
+	amd_iommu_snp_en = check_feature(FEATURE_SNP);
 	if (!amd_iommu_snp_en)
 		return -EINVAL;
 
diff --git a/drivers/iommu/amd/io_pgtable.c b/drivers/iommu/amd/io_pgtable.c
index 2892aa1b4d..6c0621f6f5 100644
--- a/drivers/iommu/amd/io_pgtable.c
+++ b/drivers/iommu/amd/io_pgtable.c
@@ -486,6 +486,73 @@ static phys_addr_t iommu_v1_iova_to_phys(struct io_pgtable_ops *ops, unsigned lo
 	return (__pte & ~offset_mask) | (iova & offset_mask);
 }
 
+static bool pte_test_and_clear_dirty(u64 *ptep, unsigned long size,
+				     unsigned long flags)
+{
+	bool test_only = flags & IOMMU_DIRTY_NO_CLEAR;
+	bool dirty = false;
+	int i, count;
+
+	/*
+	 * 2.2.3.2 Host Dirty Support
+	 * When a non-default page size is used , software must OR the
+	 * Dirty bits in all of the replicated host PTEs used to map
+	 * the page. The IOMMU does not guarantee the Dirty bits are
+	 * set in all of the replicated PTEs. Any portion of the page
+	 * may have been written even if the Dirty bit is set in only
+	 * one of the replicated PTEs.
+	 */
+	count = PAGE_SIZE_PTE_COUNT(size);
+	for (i = 0; i < count && test_only; i++) {
+		if (test_bit(IOMMU_PTE_HD_BIT, (unsigned long *)&ptep[i])) {
+			dirty = true;
+			break;
+		}
+	}
+
+	for (i = 0; i < count && !test_only; i++) {
+		if (test_and_clear_bit(IOMMU_PTE_HD_BIT,
+				       (unsigned long *)&ptep[i])) {
+			dirty = true;
+		}
+	}
+
+	return dirty;
+}
+
+static int iommu_v1_read_and_clear_dirty(struct io_pgtable_ops *ops,
+					 unsigned long iova, size_t size,
+					 unsigned long flags,
+					 struct iommu_dirty_bitmap *dirty)
+{
+	struct amd_io_pgtable *pgtable = io_pgtable_ops_to_data(ops);
+	unsigned long end = iova + size - 1;
+
+	do {
+		unsigned long pgsize = 0;
+		u64 *ptep, pte;
+
+		ptep = fetch_pte(pgtable, iova, &pgsize);
+		if (ptep)
+			pte = READ_ONCE(*ptep);
+		if (!ptep || !IOMMU_PTE_PRESENT(pte)) {
+			pgsize = pgsize ?: PTE_LEVEL_PAGE_SIZE(0);
+			iova += pgsize;
+			continue;
+		}
+
+		/*
+		 * Mark the whole IOVA range as dirty even if only one of
+		 * the replicated PTEs were marked dirty.
+		 */
+		if (pte_test_and_clear_dirty(ptep, pgsize, flags))
+			iommu_dirty_bitmap_record(dirty, iova, pgsize);
+		iova += pgsize;
+	} while (iova < end);
+
+	return 0;
+}
+
 /*
  * ----------------------------------------------------
  */
@@ -527,6 +594,7 @@ static struct io_pgtable *v1_alloc_pgtable(struct io_pgtable_cfg *cfg, void *coo
 	pgtable->iop.ops.map_pages    = iommu_v1_map_pages;
 	pgtable->iop.ops.unmap_pages  = iommu_v1_unmap_pages;
 	pgtable->iop.ops.iova_to_phys = iommu_v1_iova_to_phys;
+	pgtable->iop.ops.read_and_clear_dirty = iommu_v1_read_and_clear_dirty;
 
 	return &pgtable->iop;
 }
diff --git a/drivers/iommu/amd/io_pgtable_v2.c b/drivers/iommu/amd/io_pgtable_v2.c
index e9ef2e0a62..f818a7e254 100644
--- a/drivers/iommu/amd/io_pgtable_v2.c
+++ b/drivers/iommu/amd/io_pgtable_v2.c
@@ -363,10 +363,10 @@ static void v2_free_pgtable(struct io_pgtable *iop)
 	if (!(pdom->flags & PD_IOMMUV2_MASK))
 		return;
 
-	/*
-	 * Make changes visible to IOMMUs. No need to clear gcr3 entry
-	 * as gcr3 table is already freed.
-	 */
+	/* Clear gcr3 entry */
+	amd_iommu_domain_clear_gcr3(&pdom->domain, 0);
+
+	/* Make changes visible to IOMMUs */
 	amd_iommu_domain_update(pdom);
 
 	/* Free page table */
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 95bd7c25ba..fcc987f5d4 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -37,6 +37,7 @@
 #include <asm/iommu.h>
 #include <asm/gart.h>
 #include <asm/dma.h>
+#include <uapi/linux/iommufd.h>
 
 #include "amd_iommu.h"
 #include "../dma-iommu.h"
@@ -44,8 +45,6 @@
 
 #define CMD_SET_TYPE(cmd, t) ((cmd)->data[1] |= ((t) << 28))
 
-#define LOOP_TIMEOUT	100000
-
 /* IO virtual address start page frame number */
 #define IOVA_START_PFN		(1)
 #define IOVA_PFN(addr)		((addr) >> PAGE_SHIFT)
@@ -65,8 +64,8 @@ LIST_HEAD(hpet_map);
 LIST_HEAD(acpihid_map);
 
 const struct iommu_ops amd_iommu_ops;
+const struct iommu_dirty_ops amd_dirty_ops;
 
-static ATOMIC_NOTIFIER_HEAD(ppr_notifier);
 int amd_iommu_max_glx_val = -1;
 
 /*
@@ -79,7 +78,6 @@ struct iommu_cmd {
 struct kmem_cache *amd_iommu_irq_cache;
 
 static void detach_device(struct device *dev);
-static int domain_enable_v2(struct protection_domain *domain, int pasids);
 
 /****************************************************************************
  *
@@ -322,24 +320,141 @@ static struct iommu_group *acpihid_device_group(struct device *dev)
 	return entry->group;
 }
 
-static bool pci_iommuv2_capable(struct pci_dev *pdev)
+static inline bool pdev_pasid_supported(struct iommu_dev_data *dev_data)
 {
-	static const int caps[] = {
-		PCI_EXT_CAP_ID_PRI,
-		PCI_EXT_CAP_ID_PASID,
-	};
-	int i, pos;
+	return (dev_data->flags & AMD_IOMMU_DEVICE_FLAG_PASID_SUP);
+}
 
-	if (!pci_ats_supported(pdev))
-		return false;
+static u32 pdev_get_caps(struct pci_dev *pdev)
+{
+	int features;
+	u32 flags = 0;
+
+	if (pci_ats_supported(pdev))
+		flags |= AMD_IOMMU_DEVICE_FLAG_ATS_SUP;
 
-	for (i = 0; i < 2; ++i) {
-		pos = pci_find_ext_capability(pdev, caps[i]);
-		if (pos == 0)
-			return false;
+	if (pci_pri_supported(pdev))
+		flags |= AMD_IOMMU_DEVICE_FLAG_PRI_SUP;
+
+	features = pci_pasid_features(pdev);
+	if (features >= 0) {
+		flags |= AMD_IOMMU_DEVICE_FLAG_PASID_SUP;
+
+		if (features & PCI_PASID_CAP_EXEC)
+			flags |= AMD_IOMMU_DEVICE_FLAG_EXEC_SUP;
+
+		if (features & PCI_PASID_CAP_PRIV)
+			flags |= AMD_IOMMU_DEVICE_FLAG_PRIV_SUP;
 	}
 
-	return true;
+	return flags;
+}
+
+static inline int pdev_enable_cap_ats(struct pci_dev *pdev)
+{
+	struct iommu_dev_data *dev_data = dev_iommu_priv_get(&pdev->dev);
+	int ret = -EINVAL;
+
+	if (dev_data->ats_enabled)
+		return 0;
+
+	if (amd_iommu_iotlb_sup &&
+	    (dev_data->flags & AMD_IOMMU_DEVICE_FLAG_ATS_SUP)) {
+		ret = pci_enable_ats(pdev, PAGE_SHIFT);
+		if (!ret) {
+			dev_data->ats_enabled = 1;
+			dev_data->ats_qdep    = pci_ats_queue_depth(pdev);
+		}
+	}
+
+	return ret;
+}
+
+static inline void pdev_disable_cap_ats(struct pci_dev *pdev)
+{
+	struct iommu_dev_data *dev_data = dev_iommu_priv_get(&pdev->dev);
+
+	if (dev_data->ats_enabled) {
+		pci_disable_ats(pdev);
+		dev_data->ats_enabled = 0;
+	}
+}
+
+int amd_iommu_pdev_enable_cap_pri(struct pci_dev *pdev)
+{
+	struct iommu_dev_data *dev_data = dev_iommu_priv_get(&pdev->dev);
+	int ret = -EINVAL;
+
+	if (dev_data->pri_enabled)
+		return 0;
+
+	if (dev_data->flags & AMD_IOMMU_DEVICE_FLAG_PRI_SUP) {
+		/*
+		 * First reset the PRI state of the device.
+		 * FIXME: Hardcode number of outstanding requests for now
+		 */
+		if (!pci_reset_pri(pdev) && !pci_enable_pri(pdev, 32)) {
+			dev_data->pri_enabled = 1;
+			dev_data->pri_tlp     = pci_prg_resp_pasid_required(pdev);
+
+			ret = 0;
+		}
+	}
+
+	return ret;
+}
+
+void amd_iommu_pdev_disable_cap_pri(struct pci_dev *pdev)
+{
+	struct iommu_dev_data *dev_data = dev_iommu_priv_get(&pdev->dev);
+
+	if (dev_data->pri_enabled) {
+		pci_disable_pri(pdev);
+		dev_data->pri_enabled = 0;
+	}
+}
+
+static inline int pdev_enable_cap_pasid(struct pci_dev *pdev)
+{
+	struct iommu_dev_data *dev_data = dev_iommu_priv_get(&pdev->dev);
+	int ret = -EINVAL;
+
+	if (dev_data->pasid_enabled)
+		return 0;
+
+	if (dev_data->flags & AMD_IOMMU_DEVICE_FLAG_PASID_SUP) {
+		/* Only allow access to user-accessible pages */
+		ret = pci_enable_pasid(pdev, 0);
+		if (!ret)
+			dev_data->pasid_enabled = 1;
+	}
+
+	return ret;
+}
+
+static inline void pdev_disable_cap_pasid(struct pci_dev *pdev)
+{
+	struct iommu_dev_data *dev_data = dev_iommu_priv_get(&pdev->dev);
+
+	if (dev_data->pasid_enabled) {
+		pci_disable_pasid(pdev);
+		dev_data->pasid_enabled = 0;
+	}
+}
+
+static void pdev_enable_caps(struct pci_dev *pdev)
+{
+	pdev_enable_cap_ats(pdev);
+	pdev_enable_cap_pasid(pdev);
+	amd_iommu_pdev_enable_cap_pri(pdev);
+
+}
+
+static void pdev_disable_caps(struct pci_dev *pdev)
+{
+	pdev_disable_cap_ats(pdev);
+	pdev_disable_cap_pasid(pdev);
+	amd_iommu_pdev_disable_cap_pri(pdev);
 }
 
 /*
@@ -399,8 +514,8 @@ static int iommu_init_device(struct amd_iommu *iommu, struct device *dev)
 	 * it'll be forced to go into translation mode.
 	 */
 	if ((iommu_default_passthrough() || !amd_iommu_force_isolation) &&
-	    dev_is_pci(dev) && pci_iommuv2_capable(to_pci_dev(dev))) {
-		dev_data->iommu_v2 = iommu->is_iommu_v2;
+	    dev_is_pci(dev) && amd_iommu_gt_ppr_supported()) {
+		dev_data->flags = pdev_get_caps(to_pci_dev(dev));
 	}
 
 	dev_iommu_priv_set(dev, dev_data);
@@ -701,24 +816,6 @@ static void iommu_poll_events(struct amd_iommu *iommu)
 	writel(head, iommu->mmio_base + MMIO_EVT_HEAD_OFFSET);
 }
 
-static void iommu_handle_ppr_entry(struct amd_iommu *iommu, u64 *raw)
-{
-	struct amd_iommu_fault fault;
-
-	if (PPR_REQ_TYPE(raw[0]) != PPR_REQ_FAULT) {
-		pr_err_ratelimited("Unknown PPR request received\n");
-		return;
-	}
-
-	fault.address   = raw[1];
-	fault.pasid     = PPR_PASID(raw[0]);
-	fault.sbdf      = PCI_SEG_DEVID_TO_SBDF(iommu->pci_seg->id, PPR_DEVID(raw[0]));
-	fault.tag       = PPR_TAG(raw[0]);
-	fault.flags     = PPR_FLAGS(raw[0]);
-
-	atomic_notifier_call_chain(&ppr_notifier, 0, &fault);
-}
-
 static void iommu_poll_ppr_log(struct amd_iommu *iommu)
 {
 	u32 head, tail;
@@ -764,8 +861,7 @@ static void iommu_poll_ppr_log(struct amd_iommu *iommu)
 		head = (head + PPR_ENTRY_SIZE) % PPR_LOG_SIZE;
 		writel(head, iommu->mmio_base + MMIO_PPR_HEAD_OFFSET);
 
-		/* Handle PPR entry */
-		iommu_handle_ppr_entry(iommu, entry);
+		/* TODO: PPR Handler will be added when we add IOPF support */
 
 		/* Refresh ring-buffer information */
 		head = readl(iommu->mmio_base + MMIO_PPR_HEAD_OFFSET);
@@ -1094,7 +1190,7 @@ 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));
 
@@ -1298,7 +1394,7 @@ static void amd_iommu_flush_irt_all(struct amd_iommu *iommu)
 
 void iommu_flush_all_caches(struct amd_iommu *iommu)
 {
-	if (iommu_feature(iommu, FEATURE_IA)) {
+	if (check_feature(FEATURE_IA)) {
 		amd_iommu_flush_all(iommu);
 	} else {
 		amd_iommu_flush_dte_all(iommu);
@@ -1317,7 +1413,7 @@ 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;
@@ -1368,7 +1464,7 @@ 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;
@@ -1401,7 +1497,7 @@ 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);
@@ -1577,6 +1673,42 @@ static void free_gcr3_table(struct protection_domain *domain)
 	free_page((unsigned long)domain->gcr3_tbl);
 }
 
+/*
+ * Number of GCR3 table levels required. Level must be 4-Kbyte
+ * page and can contain up to 512 entries.
+ */
+static int get_gcr3_levels(int pasids)
+{
+	int levels;
+
+	if (pasids == -1)
+		return amd_iommu_max_glx_val;
+
+	levels = get_count_order(pasids);
+
+	return levels ? (DIV_ROUND_UP(levels, 9) - 1) : levels;
+}
+
+/* Note: This function expects iommu_domain->lock to be held prior calling the function. */
+static int setup_gcr3_table(struct protection_domain *domain, int pasids)
+{
+	int levels = get_gcr3_levels(pasids);
+
+	if (levels > amd_iommu_max_glx_val)
+		return -EINVAL;
+
+	domain->gcr3_tbl = alloc_pgtable_page(domain->nid, GFP_ATOMIC);
+	if (domain->gcr3_tbl == NULL)
+		return -ENOMEM;
+
+	domain->glx      = levels;
+	domain->flags   |= PD_IOMMUV2_MASK;
+
+	amd_iommu_domain_update(domain);
+
+	return 0;
+}
+
 static void set_dte_entry(struct amd_iommu *iommu, u16 devid,
 			  struct protection_domain *domain, bool ats, bool ppr)
 {
@@ -1605,10 +1737,11 @@ static void set_dte_entry(struct amd_iommu *iommu, u16 devid,
 	if (ats)
 		flags |= DTE_FLAG_IOTLB;
 
-	if (ppr) {
-		if (iommu_feature(iommu, FEATURE_EPHSUP))
-			pte_root |= 1ULL << DEV_ENTRY_PPR;
-	}
+	if (ppr)
+		pte_root |= 1ULL << DEV_ENTRY_PPR;
+
+	if (domain->dirty_tracking)
+		pte_root |= DTE_FLAG_HAD;
 
 	if (domain->flags & PD_IOMMUV2_MASK) {
 		u64 gcr3 = iommu_virt_to_phys(domain->gcr3_tbl);
@@ -1685,7 +1818,7 @@ 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;
@@ -1701,7 +1834,7 @@ static void do_attach(struct iommu_dev_data *dev_data,
 
 	/* Update device table */
 	set_dte_entry(iommu, dev_data->devid, domain,
-		      ats, dev_data->iommu_v2);
+		      ats, dev_data->ppr);
 	clone_aliases(iommu, dev_data->dev);
 
 	device_flush_dte(dev_data);
@@ -1736,48 +1869,6 @@ static void do_detach(struct iommu_dev_data *dev_data)
 	domain->dev_cnt                 -= 1;
 }
 
-static void pdev_iommuv2_disable(struct pci_dev *pdev)
-{
-	pci_disable_ats(pdev);
-	pci_disable_pri(pdev);
-	pci_disable_pasid(pdev);
-}
-
-static int pdev_pri_ats_enable(struct pci_dev *pdev)
-{
-	int ret;
-
-	/* Only allow access to user-accessible pages */
-	ret = pci_enable_pasid(pdev, 0);
-	if (ret)
-		return ret;
-
-	/* First reset the PRI state of the device */
-	ret = pci_reset_pri(pdev);
-	if (ret)
-		goto out_err_pasid;
-
-	/* Enable PRI */
-	/* FIXME: Hardcode number of outstanding requests for now */
-	ret = pci_enable_pri(pdev, 32);
-	if (ret)
-		goto out_err_pasid;
-
-	ret = pci_enable_ats(pdev, PAGE_SHIFT);
-	if (ret)
-		goto out_err_pri;
-
-	return 0;
-
-out_err_pri:
-	pci_disable_pri(pdev);
-
-out_err_pasid:
-	pci_disable_pasid(pdev);
-
-	return ret;
-}
-
 /*
  * If a device is not yet associated with a domain, this function makes the
  * device visible in the domain
@@ -1786,9 +1877,8 @@ static int attach_device(struct device *dev,
 			 struct protection_domain *domain)
 {
 	struct iommu_dev_data *dev_data;
-	struct pci_dev *pdev;
 	unsigned long flags;
-	int ret;
+	int ret = 0;
 
 	spin_lock_irqsave(&domain->lock, flags);
 
@@ -1796,45 +1886,13 @@ static int attach_device(struct device *dev,
 
 	spin_lock(&dev_data->lock);
 
-	ret = -EBUSY;
-	if (dev_data->domain != NULL)
+	if (dev_data->domain != NULL) {
+		ret = -EBUSY;
 		goto out;
-
-	if (!dev_is_pci(dev))
-		goto skip_ats_check;
-
-	pdev = to_pci_dev(dev);
-	if (domain->flags & PD_IOMMUV2_MASK) {
-		struct iommu_domain *def_domain = iommu_get_dma_domain(dev);
-
-		ret = -EINVAL;
-
-		/*
-		 * In case of using AMD_IOMMU_V1 page table mode and the device
-		 * is enabling for PPR/ATS support (using v2 table),
-		 * we need to make sure that the domain type is identity map.
-		 */
-		if ((amd_iommu_pgtable == AMD_IOMMU_V1) &&
-		    def_domain->type != IOMMU_DOMAIN_IDENTITY) {
-			goto out;
-		}
-
-		if (dev_data->iommu_v2) {
-			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->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);
 	}
 
-skip_ats_check:
-	ret = 0;
+	if (dev_is_pci(dev))
+		pdev_enable_caps(to_pci_dev(dev));
 
 	do_attach(dev_data, domain);
 
@@ -1882,15 +1940,8 @@ static void detach_device(struct device *dev)
 
 	do_detach(dev_data);
 
-	if (!dev_is_pci(dev))
-		goto out;
-
-	if (domain->flags & PD_IOMMUV2_MASK && dev_data->iommu_v2)
-		pdev_iommuv2_disable(to_pci_dev(dev));
-	else if (dev_data->ats.enabled)
-		pci_disable_ats(to_pci_dev(dev));
-
-	dev_data->ats.enabled = false;
+	if (dev_is_pci(dev))
+		pdev_disable_caps(to_pci_dev(dev));
 
 out:
 	spin_unlock(&dev_data->lock);
@@ -1980,7 +2031,7 @@ 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->ppr);
 		clone_aliases(iommu, dev_data->dev);
 	}
 }
@@ -2014,9 +2065,11 @@ void amd_iommu_domain_update(struct protection_domain *domain)
 static void cleanup_domain(struct protection_domain *domain)
 {
 	struct iommu_dev_data *entry;
-	unsigned long flags;
 
-	spin_lock_irqsave(&domain->lock, flags);
+	lockdep_assert_held(&domain->lock);
+
+	if (!domain->dev_cnt)
+		return;
 
 	while (!list_empty(&domain->dev_list)) {
 		entry = list_first_entry(&domain->dev_list,
@@ -2024,8 +2077,7 @@ static void cleanup_domain(struct protection_domain *domain)
 		BUG_ON(!entry->domain);
 		do_detach(entry);
 	}
-
-	spin_unlock_irqrestore(&domain->lock, flags);
+	WARN_ON(domain->dev_cnt != 0);
 }
 
 static void protection_domain_free(struct protection_domain *domain)
@@ -2036,6 +2088,12 @@ static void protection_domain_free(struct protection_domain *domain)
 	if (domain->iop.pgtbl_cfg.tlb)
 		free_io_pgtable_ops(&domain->iop.iop.ops);
 
+	if (domain->flags & PD_IOMMUV2_MASK)
+		free_gcr3_table(domain);
+
+	if (domain->iop.root)
+		free_page((unsigned long)domain->iop.root);
+
 	if (domain->id)
 		domain_id_free(domain->id);
 
@@ -2048,18 +2106,10 @@ static int protection_domain_init_v1(struct protection_domain *domain, int mode)
 
 	BUG_ON(mode < PAGE_MODE_NONE || mode > PAGE_MODE_6_LEVEL);
 
-	spin_lock_init(&domain->lock);
-	domain->id = domain_id_alloc();
-	if (!domain->id)
-		return -ENOMEM;
-	INIT_LIST_HEAD(&domain->dev_list);
-
 	if (mode != PAGE_MODE_NONE) {
 		pt_root = (void *)get_zeroed_page(GFP_KERNEL);
-		if (!pt_root) {
-			domain_id_free(domain->id);
+		if (!pt_root)
 			return -ENOMEM;
-		}
 	}
 
 	amd_iommu_domain_set_pgtable(domain, pt_root, mode);
@@ -2069,20 +2119,12 @@ static int protection_domain_init_v1(struct protection_domain *domain, int mode)
 
 static int protection_domain_init_v2(struct protection_domain *domain)
 {
-	spin_lock_init(&domain->lock);
-	domain->id = domain_id_alloc();
-	if (!domain->id)
-		return -ENOMEM;
-	INIT_LIST_HEAD(&domain->dev_list);
-
 	domain->flags |= PD_GIOV_MASK;
 
 	domain->domain.pgsize_bitmap = AMD_IOMMU_PGSIZES_V2;
 
-	if (domain_enable_v2(domain, 1)) {
-		domain_id_free(domain->id);
+	if (setup_gcr3_table(domain, 1))
 		return -ENOMEM;
-	}
 
 	return 0;
 }
@@ -2092,57 +2134,60 @@ static struct protection_domain *protection_domain_alloc(unsigned int type)
 	struct io_pgtable_ops *pgtbl_ops;
 	struct protection_domain *domain;
 	int pgtable;
-	int mode = DEFAULT_PGTABLE_LEVEL;
 	int ret;
 
+	domain = kzalloc(sizeof(*domain), GFP_KERNEL);
+	if (!domain)
+		return NULL;
+
+	domain->id = domain_id_alloc();
+	if (!domain->id)
+		goto out_err;
+
+	spin_lock_init(&domain->lock);
+	INIT_LIST_HEAD(&domain->dev_list);
+	domain->nid = NUMA_NO_NODE;
+
+	switch (type) {
+	/* No need to allocate io pgtable ops in passthrough mode */
+	case IOMMU_DOMAIN_IDENTITY:
+		return domain;
+	case IOMMU_DOMAIN_DMA:
+		pgtable = amd_iommu_pgtable;
+		break;
 	/*
-	 * Force IOMMU v1 page table when iommu=pt and
-	 * when allocating domain for pass-through devices.
+	 * Force IOMMU v1 page table when allocating
+	 * domain for pass-through devices.
 	 */
-	if (type == IOMMU_DOMAIN_IDENTITY) {
-		pgtable = AMD_IOMMU_V1;
-		mode = PAGE_MODE_NONE;
-	} else if (type == IOMMU_DOMAIN_UNMANAGED) {
+	case IOMMU_DOMAIN_UNMANAGED:
 		pgtable = AMD_IOMMU_V1;
-	} else if (type == IOMMU_DOMAIN_DMA || type == IOMMU_DOMAIN_DMA_FQ) {
-		pgtable = amd_iommu_pgtable;
-	} else {
-		return NULL;
+		break;
+	default:
+		goto out_err;
 	}
 
-	domain = kzalloc(sizeof(*domain), GFP_KERNEL);
-	if (!domain)
-		return NULL;
-
 	switch (pgtable) {
 	case AMD_IOMMU_V1:
-		ret = protection_domain_init_v1(domain, mode);
+		ret = protection_domain_init_v1(domain, DEFAULT_PGTABLE_LEVEL);
 		break;
 	case AMD_IOMMU_V2:
 		ret = protection_domain_init_v2(domain);
 		break;
 	default:
 		ret = -EINVAL;
+		break;
 	}
 
 	if (ret)
 		goto out_err;
 
-	/* No need to allocate io pgtable ops in passthrough mode */
-	if (type == IOMMU_DOMAIN_IDENTITY)
-		return domain;
-
-	domain->nid = NUMA_NO_NODE;
-
 	pgtbl_ops = alloc_io_pgtable_ops(pgtable, &domain->iop.pgtbl_cfg, domain);
-	if (!pgtbl_ops) {
-		domain_id_free(domain->id);
+	if (!pgtbl_ops)
 		goto out_err;
-	}
 
 	return domain;
 out_err:
-	kfree(domain);
+	protection_domain_free(domain);
 	return NULL;
 }
 
@@ -2155,44 +2200,94 @@ static inline u64 dma_max_address(void)
 	return ((1ULL << PM_LEVEL_SHIFT(amd_iommu_gpt_level)) - 1);
 }
 
-static struct iommu_domain *amd_iommu_domain_alloc(unsigned type)
+static bool amd_iommu_hd_support(struct amd_iommu *iommu)
+{
+	return iommu && (iommu->features & FEATURE_HDSUP);
+}
+
+static struct iommu_domain *do_iommu_domain_alloc(unsigned int type,
+						  struct device *dev, u32 flags)
 {
+	bool dirty_tracking = flags & IOMMU_HWPT_ALLOC_DIRTY_TRACKING;
 	struct protection_domain *domain;
+	struct amd_iommu *iommu = NULL;
+
+	if (dev) {
+		iommu = rlookup_amd_iommu(dev);
+		if (!iommu)
+			return ERR_PTR(-ENODEV);
+	}
 
 	/*
 	 * Since DTE[Mode]=0 is prohibited on SNP-enabled system,
 	 * default to use IOMMU_DOMAIN_DMA[_FQ].
 	 */
 	if (amd_iommu_snp_en && (type == IOMMU_DOMAIN_IDENTITY))
-		return NULL;
+		return ERR_PTR(-EINVAL);
+
+	if (dirty_tracking && !amd_iommu_hd_support(iommu))
+		return ERR_PTR(-EOPNOTSUPP);
 
 	domain = protection_domain_alloc(type);
 	if (!domain)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	domain->domain.geometry.aperture_start = 0;
 	domain->domain.geometry.aperture_end   = dma_max_address();
 	domain->domain.geometry.force_aperture = true;
 
+	if (iommu) {
+		domain->domain.type = type;
+		domain->domain.pgsize_bitmap = iommu->iommu.ops->pgsize_bitmap;
+		domain->domain.ops = iommu->iommu.ops->default_domain_ops;
+
+		if (dirty_tracking)
+			domain->domain.dirty_ops = &amd_dirty_ops;
+	}
+
 	return &domain->domain;
 }
 
-static void amd_iommu_domain_free(struct iommu_domain *dom)
+static struct iommu_domain *amd_iommu_domain_alloc(unsigned int type)
 {
-	struct protection_domain *domain;
+	struct iommu_domain *domain;
 
-	domain = to_pdomain(dom);
+	domain = do_iommu_domain_alloc(type, NULL, 0);
+	if (IS_ERR(domain))
+		return NULL;
+
+	return domain;
+}
+
+static struct iommu_domain *
+amd_iommu_domain_alloc_user(struct device *dev, u32 flags,
+			    struct iommu_domain *parent,
+			    const struct iommu_user_data *user_data)
+
+{
+	unsigned int type = IOMMU_DOMAIN_UNMANAGED;
 
-	if (domain->dev_cnt > 0)
-		cleanup_domain(domain);
+	if ((flags & ~IOMMU_HWPT_ALLOC_DIRTY_TRACKING) || parent || user_data)
+		return ERR_PTR(-EOPNOTSUPP);
 
-	BUG_ON(domain->dev_cnt != 0);
+	return do_iommu_domain_alloc(type, dev, flags);
+}
+
+static void amd_iommu_domain_free(struct iommu_domain *dom)
+{
+	struct protection_domain *domain;
+	unsigned long flags;
 
 	if (!dom)
 		return;
 
-	if (domain->flags & PD_IOMMUV2_MASK)
-		free_gcr3_table(domain);
+	domain = to_pdomain(dom);
+
+	spin_lock_irqsave(&domain->lock, flags);
+
+	cleanup_domain(domain);
+
+	spin_unlock_irqrestore(&domain->lock, flags);
 
 	protection_domain_free(domain);
 }
@@ -2214,6 +2309,13 @@ static int amd_iommu_attach_device(struct iommu_domain *dom,
 
 	dev_data->defer_attach = false;
 
+	/*
+	 * Restrict to devices with compatible IOMMU hardware support
+	 * when enforcement of dirty tracking is enabled.
+	 */
+	if (dom->dirty_ops && !amd_iommu_hd_support(iommu))
+		return -EINVAL;
+
 	if (dev_data->domain)
 		detach_device(dev);
 
@@ -2233,14 +2335,15 @@ static int amd_iommu_attach_device(struct iommu_domain *dom,
 	return ret;
 }
 
-static void amd_iommu_iotlb_sync_map(struct iommu_domain *dom,
-				     unsigned long iova, size_t size)
+static int amd_iommu_iotlb_sync_map(struct iommu_domain *dom,
+				    unsigned long iova, size_t size)
 {
 	struct protection_domain *domain = to_pdomain(dom);
 	struct io_pgtable_ops *ops = &domain->iop.iop.ops;
 
 	if (ops->map_pages)
 		domain_flush_np_cache(domain, iova, size);
+	return 0;
 }
 
 static int amd_iommu_map_pages(struct iommu_domain *dom, unsigned long iova,
@@ -2332,6 +2435,11 @@ static bool amd_iommu_capable(struct device *dev, enum iommu_cap cap)
 		return true;
 	case IOMMU_CAP_DEFERRED_FLUSH:
 		return true;
+	case IOMMU_CAP_DIRTY_TRACKING: {
+		struct amd_iommu *iommu = rlookup_amd_iommu(dev);
+
+		return amd_iommu_hd_support(iommu);
+	}
 	default:
 		break;
 	}
@@ -2339,6 +2447,73 @@ static bool amd_iommu_capable(struct device *dev, enum iommu_cap cap)
 	return false;
 }
 
+static int amd_iommu_set_dirty_tracking(struct iommu_domain *domain,
+					bool enable)
+{
+	struct protection_domain *pdomain = to_pdomain(domain);
+	struct dev_table_entry *dev_table;
+	struct iommu_dev_data *dev_data;
+	bool domain_flush = false;
+	struct amd_iommu *iommu;
+	unsigned long flags;
+	u64 pte_root;
+
+	spin_lock_irqsave(&pdomain->lock, flags);
+	if (!(pdomain->dirty_tracking ^ enable)) {
+		spin_unlock_irqrestore(&pdomain->lock, flags);
+		return 0;
+	}
+
+	list_for_each_entry(dev_data, &pdomain->dev_list, list) {
+		iommu = rlookup_amd_iommu(dev_data->dev);
+		if (!iommu)
+			continue;
+
+		dev_table = get_dev_table(iommu);
+		pte_root = dev_table[dev_data->devid].data[0];
+
+		pte_root = (enable ? pte_root | DTE_FLAG_HAD :
+				     pte_root & ~DTE_FLAG_HAD);
+
+		/* Flush device DTE */
+		dev_table[dev_data->devid].data[0] = pte_root;
+		device_flush_dte(dev_data);
+		domain_flush = true;
+	}
+
+	/* Flush IOTLB to mark IOPTE dirty on the next translation(s) */
+	if (domain_flush) {
+		amd_iommu_domain_flush_tlb_pde(pdomain);
+		amd_iommu_domain_flush_complete(pdomain);
+	}
+	pdomain->dirty_tracking = enable;
+	spin_unlock_irqrestore(&pdomain->lock, flags);
+
+	return 0;
+}
+
+static int amd_iommu_read_and_clear_dirty(struct iommu_domain *domain,
+					  unsigned long iova, size_t size,
+					  unsigned long flags,
+					  struct iommu_dirty_bitmap *dirty)
+{
+	struct protection_domain *pdomain = to_pdomain(domain);
+	struct io_pgtable_ops *ops = &pdomain->iop.iop.ops;
+	unsigned long lflags;
+
+	if (!ops || !ops->read_and_clear_dirty)
+		return -EOPNOTSUPP;
+
+	spin_lock_irqsave(&pdomain->lock, lflags);
+	if (!pdomain->dirty_tracking && dirty->bitmap) {
+		spin_unlock_irqrestore(&pdomain->lock, lflags);
+		return -EINVAL;
+	}
+	spin_unlock_irqrestore(&pdomain->lock, lflags);
+
+	return ops->read_and_clear_dirty(ops, iova, size, flags, dirty);
+}
+
 static void amd_iommu_get_resv_regions(struct device *dev,
 				       struct list_head *head)
 {
@@ -2406,7 +2581,6 @@ bool amd_iommu_is_attach_deferred(struct device *dev)
 
 	return dev_data->defer_attach;
 }
-EXPORT_SYMBOL_GPL(amd_iommu_is_attach_deferred);
 
 static void amd_iommu_flush_iotlb_all(struct iommu_domain *domain)
 {
@@ -2446,7 +2620,7 @@ static int amd_iommu_def_domain_type(struct device *dev)
 	 *    and require remapping.
 	 *  - SNP is enabled, because it prohibits DTE[Mode]=0.
 	 */
-	if (dev_data->iommu_v2 &&
+	if (pdev_pasid_supported(dev_data) &&
 	    !cc_platform_has(CC_ATTR_MEM_ENCRYPT) &&
 	    !amd_iommu_snp_en) {
 		return IOMMU_DOMAIN_IDENTITY;
@@ -2461,9 +2635,15 @@ static bool amd_iommu_enforce_cache_coherency(struct iommu_domain *domain)
 	return true;
 }
 
+const struct iommu_dirty_ops amd_dirty_ops = {
+	.set_dirty_tracking = amd_iommu_set_dirty_tracking,
+	.read_and_clear_dirty = amd_iommu_read_and_clear_dirty,
+};
+
 const struct iommu_ops amd_iommu_ops = {
 	.capable = amd_iommu_capable,
 	.domain_alloc = amd_iommu_domain_alloc,
+	.domain_alloc_user = amd_iommu_domain_alloc_user,
 	.probe_device = amd_iommu_probe_device,
 	.release_device = amd_iommu_release_device,
 	.probe_finalize = amd_iommu_probe_finalize,
@@ -2485,93 +2665,6 @@ const struct iommu_ops amd_iommu_ops = {
 	}
 };
 
-/*****************************************************************************
- *
- * The next functions do a basic initialization of IOMMU for pass through
- * mode
- *
- * In passthrough mode the IOMMU is initialized and enabled but not used for
- * DMA-API translation.
- *
- *****************************************************************************/
-
-/* IOMMUv2 specific functions */
-int amd_iommu_register_ppr_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_register(&ppr_notifier, nb);
-}
-EXPORT_SYMBOL(amd_iommu_register_ppr_notifier);
-
-int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_unregister(&ppr_notifier, nb);
-}
-EXPORT_SYMBOL(amd_iommu_unregister_ppr_notifier);
-
-void amd_iommu_domain_direct_map(struct iommu_domain *dom)
-{
-	struct protection_domain *domain = to_pdomain(dom);
-	unsigned long flags;
-
-	spin_lock_irqsave(&domain->lock, flags);
-
-	if (domain->iop.pgtbl_cfg.tlb)
-		free_io_pgtable_ops(&domain->iop.iop.ops);
-
-	spin_unlock_irqrestore(&domain->lock, flags);
-}
-EXPORT_SYMBOL(amd_iommu_domain_direct_map);
-
-/* Note: This function expects iommu_domain->lock to be held prior calling the function. */
-static int domain_enable_v2(struct protection_domain *domain, int pasids)
-{
-	int levels;
-
-	/* Number of GCR3 table levels required */
-	for (levels = 0; (pasids - 1) & ~0x1ff; pasids >>= 9)
-		levels += 1;
-
-	if (levels > amd_iommu_max_glx_val)
-		return -EINVAL;
-
-	domain->gcr3_tbl = (void *)get_zeroed_page(GFP_ATOMIC);
-	if (domain->gcr3_tbl == NULL)
-		return -ENOMEM;
-
-	domain->glx      = levels;
-	domain->flags   |= PD_IOMMUV2_MASK;
-
-	amd_iommu_domain_update(domain);
-
-	return 0;
-}
-
-int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids)
-{
-	struct protection_domain *pdom = to_pdomain(dom);
-	unsigned long flags;
-	int ret;
-
-	spin_lock_irqsave(&pdom->lock, flags);
-
-	/*
-	 * Save us all sanity checks whether devices already in the
-	 * domain support IOMMUv2. Just force that the domain has no
-	 * devices attached when it is switched into IOMMUv2 mode.
-	 */
-	ret = -EBUSY;
-	if (pdom->dev_cnt > 0 || pdom->flags & PD_IOMMUV2_MASK)
-		goto out;
-
-	if (!pdom->gcr3_tbl)
-		ret = domain_enable_v2(pdom, pasids);
-
-out:
-	spin_unlock_irqrestore(&pdom->lock, flags);
-	return ret;
-}
-EXPORT_SYMBOL(amd_iommu_domain_enable_v2);
-
 static int __flush_pasid(struct protection_domain *domain, u32 pasid,
 			 u64 address, bool size)
 {
@@ -2609,10 +2702,10 @@ 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;
@@ -2653,7 +2746,6 @@ int amd_iommu_flush_page(struct iommu_domain *dom, u32 pasid,
 
 	return ret;
 }
-EXPORT_SYMBOL(amd_iommu_flush_page);
 
 static int __amd_iommu_flush_tlb(struct protection_domain *domain, u32 pasid)
 {
@@ -2673,7 +2765,6 @@ int amd_iommu_flush_tlb(struct iommu_domain *dom, u32 pasid)
 
 	return ret;
 }
-EXPORT_SYMBOL(amd_iommu_flush_tlb);
 
 static u64 *__get_gcr3_pte(u64 *root, int level, u32 pasid, bool alloc)
 {
@@ -2753,7 +2844,6 @@ int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, u32 pasid,
 
 	return ret;
 }
-EXPORT_SYMBOL(amd_iommu_domain_set_gcr3);
 
 int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, u32 pasid)
 {
@@ -2767,7 +2857,6 @@ int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, u32 pasid)
 
 	return ret;
 }
-EXPORT_SYMBOL(amd_iommu_domain_clear_gcr3);
 
 int amd_iommu_complete_ppr(struct pci_dev *pdev, u32 pasid,
 			   int status, int tag)
@@ -2786,49 +2875,6 @@ int amd_iommu_complete_ppr(struct pci_dev *pdev, u32 pasid,
 
 	return iommu_queue_command(iommu, &cmd);
 }
-EXPORT_SYMBOL(amd_iommu_complete_ppr);
-
-int amd_iommu_device_info(struct pci_dev *pdev,
-                          struct amd_iommu_device_info *info)
-{
-	int max_pasids;
-	int pos;
-
-	if (pdev == NULL || info == NULL)
-		return -EINVAL;
-
-	if (!amd_iommu_v2_supported())
-		return -EINVAL;
-
-	memset(info, 0, sizeof(*info));
-
-	if (pci_ats_supported(pdev))
-		info->flags |= AMD_IOMMU_DEVICE_FLAG_ATS_SUP;
-
-	pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_PRI);
-	if (pos)
-		info->flags |= AMD_IOMMU_DEVICE_FLAG_PRI_SUP;
-
-	pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_PASID);
-	if (pos) {
-		int features;
-
-		max_pasids = 1 << (9 * (amd_iommu_max_glx_val + 1));
-		max_pasids = min(max_pasids, (1 << 20));
-
-		info->flags |= AMD_IOMMU_DEVICE_FLAG_PASID_SUP;
-		info->max_pasids = min(pci_max_pasids(pdev), max_pasids);
-
-		features = pci_pasid_features(pdev);
-		if (features & PCI_PASID_CAP_EXEC)
-			info->flags |= AMD_IOMMU_DEVICE_FLAG_EXEC_SUP;
-		if (features & PCI_PASID_CAP_PRIV)
-			info->flags |= AMD_IOMMU_DEVICE_FLAG_PRIV_SUP;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(amd_iommu_device_info);
 
 #ifdef CONFIG_IRQ_REMAP
 
diff --git a/drivers/iommu/amd/iommu_v2.c b/drivers/iommu/amd/iommu_v2.c
deleted file mode 100644
index 57c2fb1146..0000000000
--- a/drivers/iommu/amd/iommu_v2.c
+++ /dev/null
@@ -1,996 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2010-2012 Advanced Micro Devices, Inc.
- * Author: Joerg Roedel <jroedel@suse.de>
- */
-
-#define pr_fmt(fmt)     "AMD-Vi: " fmt
-
-#include <linux/refcount.h>
-#include <linux/mmu_notifier.h>
-#include <linux/amd-iommu.h>
-#include <linux/mm_types.h>
-#include <linux/profile.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/sched/mm.h>
-#include <linux/wait.h>
-#include <linux/pci.h>
-#include <linux/gfp.h>
-#include <linux/cc_platform.h>
-
-#include "amd_iommu.h"
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Joerg Roedel <jroedel@suse.de>");
-
-#define PRI_QUEUE_SIZE		512
-
-struct pri_queue {
-	atomic_t inflight;
-	bool finish;
-	int status;
-};
-
-struct pasid_state {
-	struct list_head list;			/* For global state-list */
-	refcount_t count;				/* Reference count */
-	unsigned mmu_notifier_count;		/* Counting nested mmu_notifier
-						   calls */
-	struct mm_struct *mm;			/* mm_struct for the faults */
-	struct mmu_notifier mn;                 /* mmu_notifier handle */
-	struct pri_queue pri[PRI_QUEUE_SIZE];	/* PRI tag states */
-	struct device_state *device_state;	/* Link to our device_state */
-	u32 pasid;				/* PASID index */
-	bool invalid;				/* Used during setup and
-						   teardown of the pasid */
-	spinlock_t lock;			/* Protect pri_queues and
-						   mmu_notifer_count */
-	wait_queue_head_t wq;			/* To wait for count == 0 */
-};
-
-struct device_state {
-	struct list_head list;
-	u32 sbdf;
-	atomic_t count;
-	struct pci_dev *pdev;
-	struct pasid_state **states;
-	struct iommu_domain *domain;
-	int pasid_levels;
-	int max_pasids;
-	amd_iommu_invalid_ppr_cb inv_ppr_cb;
-	amd_iommu_invalidate_ctx inv_ctx_cb;
-	spinlock_t lock;
-	wait_queue_head_t wq;
-};
-
-struct fault {
-	struct work_struct work;
-	struct device_state *dev_state;
-	struct pasid_state *state;
-	struct mm_struct *mm;
-	u64 address;
-	u32 pasid;
-	u16 tag;
-	u16 finish;
-	u16 flags;
-};
-
-static LIST_HEAD(state_list);
-static DEFINE_SPINLOCK(state_lock);
-
-static struct workqueue_struct *iommu_wq;
-
-static void free_pasid_states(struct device_state *dev_state);
-
-static struct device_state *__get_device_state(u32 sbdf)
-{
-	struct device_state *dev_state;
-
-	list_for_each_entry(dev_state, &state_list, list) {
-		if (dev_state->sbdf == sbdf)
-			return dev_state;
-	}
-
-	return NULL;
-}
-
-static struct device_state *get_device_state(u32 sbdf)
-{
-	struct device_state *dev_state;
-	unsigned long flags;
-
-	spin_lock_irqsave(&state_lock, flags);
-	dev_state = __get_device_state(sbdf);
-	if (dev_state != NULL)
-		atomic_inc(&dev_state->count);
-	spin_unlock_irqrestore(&state_lock, flags);
-
-	return dev_state;
-}
-
-static void free_device_state(struct device_state *dev_state)
-{
-	struct iommu_group *group;
-
-	/* Get rid of any remaining pasid states */
-	free_pasid_states(dev_state);
-
-	/*
-	 * Wait until the last reference is dropped before freeing
-	 * the device state.
-	 */
-	wait_event(dev_state->wq, !atomic_read(&dev_state->count));
-
-	/*
-	 * First detach device from domain - No more PRI requests will arrive
-	 * from that device after it is unbound from the IOMMUv2 domain.
-	 */
-	group = iommu_group_get(&dev_state->pdev->dev);
-	if (WARN_ON(!group))
-		return;
-
-	iommu_detach_group(dev_state->domain, group);
-
-	iommu_group_put(group);
-
-	/* Everything is down now, free the IOMMUv2 domain */
-	iommu_domain_free(dev_state->domain);
-
-	/* Finally get rid of the device-state */
-	kfree(dev_state);
-}
-
-static void put_device_state(struct device_state *dev_state)
-{
-	if (atomic_dec_and_test(&dev_state->count))
-		wake_up(&dev_state->wq);
-}
-
-/* Must be called under dev_state->lock */
-static struct pasid_state **__get_pasid_state_ptr(struct device_state *dev_state,
-						  u32 pasid, bool alloc)
-{
-	struct pasid_state **root, **ptr;
-	int level, index;
-
-	level = dev_state->pasid_levels;
-	root  = dev_state->states;
-
-	while (true) {
-
-		index = (pasid >> (9 * level)) & 0x1ff;
-		ptr   = &root[index];
-
-		if (level == 0)
-			break;
-
-		if (*ptr == NULL) {
-			if (!alloc)
-				return NULL;
-
-			*ptr = (void *)get_zeroed_page(GFP_ATOMIC);
-			if (*ptr == NULL)
-				return NULL;
-		}
-
-		root   = (struct pasid_state **)*ptr;
-		level -= 1;
-	}
-
-	return ptr;
-}
-
-static int set_pasid_state(struct device_state *dev_state,
-			   struct pasid_state *pasid_state,
-			   u32 pasid)
-{
-	struct pasid_state **ptr;
-	unsigned long flags;
-	int ret;
-
-	spin_lock_irqsave(&dev_state->lock, flags);
-	ptr = __get_pasid_state_ptr(dev_state, pasid, true);
-
-	ret = -ENOMEM;
-	if (ptr == NULL)
-		goto out_unlock;
-
-	ret = -ENOMEM;
-	if (*ptr != NULL)
-		goto out_unlock;
-
-	*ptr = pasid_state;
-
-	ret = 0;
-
-out_unlock:
-	spin_unlock_irqrestore(&dev_state->lock, flags);
-
-	return ret;
-}
-
-static void clear_pasid_state(struct device_state *dev_state, u32 pasid)
-{
-	struct pasid_state **ptr;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev_state->lock, flags);
-	ptr = __get_pasid_state_ptr(dev_state, pasid, true);
-
-	if (ptr == NULL)
-		goto out_unlock;
-
-	*ptr = NULL;
-
-out_unlock:
-	spin_unlock_irqrestore(&dev_state->lock, flags);
-}
-
-static struct pasid_state *get_pasid_state(struct device_state *dev_state,
-					   u32 pasid)
-{
-	struct pasid_state **ptr, *ret = NULL;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev_state->lock, flags);
-	ptr = __get_pasid_state_ptr(dev_state, pasid, false);
-
-	if (ptr == NULL)
-		goto out_unlock;
-
-	ret = *ptr;
-	if (ret)
-		refcount_inc(&ret->count);
-
-out_unlock:
-	spin_unlock_irqrestore(&dev_state->lock, flags);
-
-	return ret;
-}
-
-static void free_pasid_state(struct pasid_state *pasid_state)
-{
-	kfree(pasid_state);
-}
-
-static void put_pasid_state(struct pasid_state *pasid_state)
-{
-	if (refcount_dec_and_test(&pasid_state->count))
-		wake_up(&pasid_state->wq);
-}
-
-static void put_pasid_state_wait(struct pasid_state *pasid_state)
-{
-	if (!refcount_dec_and_test(&pasid_state->count))
-		wait_event(pasid_state->wq, !refcount_read(&pasid_state->count));
-	free_pasid_state(pasid_state);
-}
-
-static void unbind_pasid(struct pasid_state *pasid_state)
-{
-	struct iommu_domain *domain;
-
-	domain = pasid_state->device_state->domain;
-
-	/*
-	 * Mark pasid_state as invalid, no more faults will we added to the
-	 * work queue after this is visible everywhere.
-	 */
-	pasid_state->invalid = true;
-
-	/* Make sure this is visible */
-	smp_wmb();
-
-	/* After this the device/pasid can't access the mm anymore */
-	amd_iommu_domain_clear_gcr3(domain, pasid_state->pasid);
-
-	/* Make sure no more pending faults are in the queue */
-	flush_workqueue(iommu_wq);
-}
-
-static void free_pasid_states_level1(struct pasid_state **tbl)
-{
-	int i;
-
-	for (i = 0; i < 512; ++i) {
-		if (tbl[i] == NULL)
-			continue;
-
-		free_page((unsigned long)tbl[i]);
-	}
-}
-
-static void free_pasid_states_level2(struct pasid_state **tbl)
-{
-	struct pasid_state **ptr;
-	int i;
-
-	for (i = 0; i < 512; ++i) {
-		if (tbl[i] == NULL)
-			continue;
-
-		ptr = (struct pasid_state **)tbl[i];
-		free_pasid_states_level1(ptr);
-	}
-}
-
-static void free_pasid_states(struct device_state *dev_state)
-{
-	struct pasid_state *pasid_state;
-	int i;
-
-	for (i = 0; i < dev_state->max_pasids; ++i) {
-		pasid_state = get_pasid_state(dev_state, i);
-		if (pasid_state == NULL)
-			continue;
-
-		put_pasid_state(pasid_state);
-
-		/* Clear the pasid state so that the pasid can be re-used */
-		clear_pasid_state(dev_state, pasid_state->pasid);
-
-		/*
-		 * This will call the mn_release function and
-		 * unbind the PASID
-		 */
-		mmu_notifier_unregister(&pasid_state->mn, pasid_state->mm);
-
-		put_pasid_state_wait(pasid_state); /* Reference taken in
-						      amd_iommu_bind_pasid */
-
-		/* Drop reference taken in amd_iommu_bind_pasid */
-		put_device_state(dev_state);
-	}
-
-	if (dev_state->pasid_levels == 2)
-		free_pasid_states_level2(dev_state->states);
-	else if (dev_state->pasid_levels == 1)
-		free_pasid_states_level1(dev_state->states);
-	else
-		BUG_ON(dev_state->pasid_levels != 0);
-
-	free_page((unsigned long)dev_state->states);
-}
-
-static struct pasid_state *mn_to_state(struct mmu_notifier *mn)
-{
-	return container_of(mn, struct pasid_state, mn);
-}
-
-static void mn_arch_invalidate_secondary_tlbs(struct mmu_notifier *mn,
-					struct mm_struct *mm,
-					unsigned long start, unsigned long end)
-{
-	struct pasid_state *pasid_state;
-	struct device_state *dev_state;
-
-	pasid_state = mn_to_state(mn);
-	dev_state   = pasid_state->device_state;
-
-	if ((start ^ (end - 1)) < PAGE_SIZE)
-		amd_iommu_flush_page(dev_state->domain, pasid_state->pasid,
-				     start);
-	else
-		amd_iommu_flush_tlb(dev_state->domain, pasid_state->pasid);
-}
-
-static void mn_release(struct mmu_notifier *mn, struct mm_struct *mm)
-{
-	struct pasid_state *pasid_state;
-	struct device_state *dev_state;
-	bool run_inv_ctx_cb;
-
-	might_sleep();
-
-	pasid_state    = mn_to_state(mn);
-	dev_state      = pasid_state->device_state;
-	run_inv_ctx_cb = !pasid_state->invalid;
-
-	if (run_inv_ctx_cb && dev_state->inv_ctx_cb)
-		dev_state->inv_ctx_cb(dev_state->pdev, pasid_state->pasid);
-
-	unbind_pasid(pasid_state);
-}
-
-static const struct mmu_notifier_ops iommu_mn = {
-	.release			= mn_release,
-	.arch_invalidate_secondary_tlbs	= mn_arch_invalidate_secondary_tlbs,
-};
-
-static void set_pri_tag_status(struct pasid_state *pasid_state,
-			       u16 tag, int status)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&pasid_state->lock, flags);
-	pasid_state->pri[tag].status = status;
-	spin_unlock_irqrestore(&pasid_state->lock, flags);
-}
-
-static void finish_pri_tag(struct device_state *dev_state,
-			   struct pasid_state *pasid_state,
-			   u16 tag)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&pasid_state->lock, flags);
-	if (atomic_dec_and_test(&pasid_state->pri[tag].inflight) &&
-	    pasid_state->pri[tag].finish) {
-		amd_iommu_complete_ppr(dev_state->pdev, pasid_state->pasid,
-				       pasid_state->pri[tag].status, tag);
-		pasid_state->pri[tag].finish = false;
-		pasid_state->pri[tag].status = PPR_SUCCESS;
-	}
-	spin_unlock_irqrestore(&pasid_state->lock, flags);
-}
-
-static void handle_fault_error(struct fault *fault)
-{
-	int status;
-
-	if (!fault->dev_state->inv_ppr_cb) {
-		set_pri_tag_status(fault->state, fault->tag, PPR_INVALID);
-		return;
-	}
-
-	status = fault->dev_state->inv_ppr_cb(fault->dev_state->pdev,
-					      fault->pasid,
-					      fault->address,
-					      fault->flags);
-	switch (status) {
-	case AMD_IOMMU_INV_PRI_RSP_SUCCESS:
-		set_pri_tag_status(fault->state, fault->tag, PPR_SUCCESS);
-		break;
-	case AMD_IOMMU_INV_PRI_RSP_INVALID:
-		set_pri_tag_status(fault->state, fault->tag, PPR_INVALID);
-		break;
-	case AMD_IOMMU_INV_PRI_RSP_FAIL:
-		set_pri_tag_status(fault->state, fault->tag, PPR_FAILURE);
-		break;
-	default:
-		BUG();
-	}
-}
-
-static bool access_error(struct vm_area_struct *vma, struct fault *fault)
-{
-	unsigned long requested = 0;
-
-	if (fault->flags & PPR_FAULT_EXEC)
-		requested |= VM_EXEC;
-
-	if (fault->flags & PPR_FAULT_READ)
-		requested |= VM_READ;
-
-	if (fault->flags & PPR_FAULT_WRITE)
-		requested |= VM_WRITE;
-
-	return (requested & ~vma->vm_flags) != 0;
-}
-
-static void do_fault(struct work_struct *work)
-{
-	struct fault *fault = container_of(work, struct fault, work);
-	struct vm_area_struct *vma;
-	vm_fault_t ret = VM_FAULT_ERROR;
-	unsigned int flags = 0;
-	struct mm_struct *mm;
-	u64 address;
-
-	mm = fault->state->mm;
-	address = fault->address;
-
-	if (fault->flags & PPR_FAULT_USER)
-		flags |= FAULT_FLAG_USER;
-	if (fault->flags & PPR_FAULT_WRITE)
-		flags |= FAULT_FLAG_WRITE;
-	flags |= FAULT_FLAG_REMOTE;
-
-	mmap_read_lock(mm);
-	vma = vma_lookup(mm, address);
-	if (!vma)
-		/* failed to get a vma in the right range */
-		goto out;
-
-	/* Check if we have the right permissions on the vma */
-	if (access_error(vma, fault))
-		goto out;
-
-	ret = handle_mm_fault(vma, address, flags, NULL);
-out:
-	mmap_read_unlock(mm);
-
-	if (ret & VM_FAULT_ERROR)
-		/* failed to service fault */
-		handle_fault_error(fault);
-
-	finish_pri_tag(fault->dev_state, fault->state, fault->tag);
-
-	put_pasid_state(fault->state);
-
-	kfree(fault);
-}
-
-static int ppr_notifier(struct notifier_block *nb, unsigned long e, void *data)
-{
-	struct amd_iommu_fault *iommu_fault;
-	struct pasid_state *pasid_state;
-	struct device_state *dev_state;
-	struct pci_dev *pdev = NULL;
-	unsigned long flags;
-	struct fault *fault;
-	bool finish;
-	u16 tag, devid, seg_id;
-	int ret;
-
-	iommu_fault = data;
-	tag         = iommu_fault->tag & 0x1ff;
-	finish      = (iommu_fault->tag >> 9) & 1;
-
-	seg_id = PCI_SBDF_TO_SEGID(iommu_fault->sbdf);
-	devid = PCI_SBDF_TO_DEVID(iommu_fault->sbdf);
-	pdev = pci_get_domain_bus_and_slot(seg_id, PCI_BUS_NUM(devid),
-					   devid & 0xff);
-	if (!pdev)
-		return -ENODEV;
-
-	ret = NOTIFY_DONE;
-
-	/* In kdump kernel pci dev is not initialized yet -> send INVALID */
-	if (amd_iommu_is_attach_deferred(&pdev->dev)) {
-		amd_iommu_complete_ppr(pdev, iommu_fault->pasid,
-				       PPR_INVALID, tag);
-		goto out;
-	}
-
-	dev_state = get_device_state(iommu_fault->sbdf);
-	if (dev_state == NULL)
-		goto out;
-
-	pasid_state = get_pasid_state(dev_state, iommu_fault->pasid);
-	if (pasid_state == NULL || pasid_state->invalid) {
-		/* We know the device but not the PASID -> send INVALID */
-		amd_iommu_complete_ppr(dev_state->pdev, iommu_fault->pasid,
-				       PPR_INVALID, tag);
-		goto out_drop_state;
-	}
-
-	spin_lock_irqsave(&pasid_state->lock, flags);
-	atomic_inc(&pasid_state->pri[tag].inflight);
-	if (finish)
-		pasid_state->pri[tag].finish = true;
-	spin_unlock_irqrestore(&pasid_state->lock, flags);
-
-	fault = kzalloc(sizeof(*fault), GFP_ATOMIC);
-	if (fault == NULL) {
-		/* We are OOM - send success and let the device re-fault */
-		finish_pri_tag(dev_state, pasid_state, tag);
-		goto out_drop_state;
-	}
-
-	fault->dev_state = dev_state;
-	fault->address   = iommu_fault->address;
-	fault->state     = pasid_state;
-	fault->tag       = tag;
-	fault->finish    = finish;
-	fault->pasid     = iommu_fault->pasid;
-	fault->flags     = iommu_fault->flags;
-	INIT_WORK(&fault->work, do_fault);
-
-	queue_work(iommu_wq, &fault->work);
-
-	ret = NOTIFY_OK;
-
-out_drop_state:
-
-	if (ret != NOTIFY_OK && pasid_state)
-		put_pasid_state(pasid_state);
-
-	put_device_state(dev_state);
-
-out:
-	pci_dev_put(pdev);
-	return ret;
-}
-
-static struct notifier_block ppr_nb = {
-	.notifier_call = ppr_notifier,
-};
-
-int amd_iommu_bind_pasid(struct pci_dev *pdev, u32 pasid,
-			 struct task_struct *task)
-{
-	struct pasid_state *pasid_state;
-	struct device_state *dev_state;
-	struct mm_struct *mm;
-	u32 sbdf;
-	int ret;
-
-	might_sleep();
-
-	if (!amd_iommu_v2_supported())
-		return -ENODEV;
-
-	sbdf      = get_pci_sbdf_id(pdev);
-	dev_state = get_device_state(sbdf);
-
-	if (dev_state == NULL)
-		return -EINVAL;
-
-	ret = -EINVAL;
-	if (pasid >= dev_state->max_pasids)
-		goto out;
-
-	ret = -ENOMEM;
-	pasid_state = kzalloc(sizeof(*pasid_state), GFP_KERNEL);
-	if (pasid_state == NULL)
-		goto out;
-
-
-	refcount_set(&pasid_state->count, 1);
-	init_waitqueue_head(&pasid_state->wq);
-	spin_lock_init(&pasid_state->lock);
-
-	mm                        = get_task_mm(task);
-	pasid_state->mm           = mm;
-	pasid_state->device_state = dev_state;
-	pasid_state->pasid        = pasid;
-	pasid_state->invalid      = true; /* Mark as valid only if we are
-					     done with setting up the pasid */
-	pasid_state->mn.ops       = &iommu_mn;
-
-	if (pasid_state->mm == NULL)
-		goto out_free;
-
-	ret = mmu_notifier_register(&pasid_state->mn, mm);
-	if (ret)
-		goto out_free;
-
-	ret = set_pasid_state(dev_state, pasid_state, pasid);
-	if (ret)
-		goto out_unregister;
-
-	ret = amd_iommu_domain_set_gcr3(dev_state->domain, pasid,
-					__pa(pasid_state->mm->pgd));
-	if (ret)
-		goto out_clear_state;
-
-	/* Now we are ready to handle faults */
-	pasid_state->invalid = false;
-
-	/*
-	 * Drop the reference to the mm_struct here. We rely on the
-	 * mmu_notifier release call-back to inform us when the mm
-	 * is going away.
-	 */
-	mmput(mm);
-
-	return 0;
-
-out_clear_state:
-	clear_pasid_state(dev_state, pasid);
-
-out_unregister:
-	mmu_notifier_unregister(&pasid_state->mn, mm);
-	mmput(mm);
-
-out_free:
-	free_pasid_state(pasid_state);
-
-out:
-	put_device_state(dev_state);
-
-	return ret;
-}
-EXPORT_SYMBOL(amd_iommu_bind_pasid);
-
-void amd_iommu_unbind_pasid(struct pci_dev *pdev, u32 pasid)
-{
-	struct pasid_state *pasid_state;
-	struct device_state *dev_state;
-	u32 sbdf;
-
-	might_sleep();
-
-	if (!amd_iommu_v2_supported())
-		return;
-
-	sbdf = get_pci_sbdf_id(pdev);
-	dev_state = get_device_state(sbdf);
-	if (dev_state == NULL)
-		return;
-
-	if (pasid >= dev_state->max_pasids)
-		goto out;
-
-	pasid_state = get_pasid_state(dev_state, pasid);
-	if (pasid_state == NULL)
-		goto out;
-	/*
-	 * Drop reference taken here. We are safe because we still hold
-	 * the reference taken in the amd_iommu_bind_pasid function.
-	 */
-	put_pasid_state(pasid_state);
-
-	/* Clear the pasid state so that the pasid can be re-used */
-	clear_pasid_state(dev_state, pasid_state->pasid);
-
-	/*
-	 * Call mmu_notifier_unregister to drop our reference
-	 * to pasid_state->mm
-	 */
-	mmu_notifier_unregister(&pasid_state->mn, pasid_state->mm);
-
-	put_pasid_state_wait(pasid_state); /* Reference taken in
-					      amd_iommu_bind_pasid */
-out:
-	/* Drop reference taken in this function */
-	put_device_state(dev_state);
-
-	/* Drop reference taken in amd_iommu_bind_pasid */
-	put_device_state(dev_state);
-}
-EXPORT_SYMBOL(amd_iommu_unbind_pasid);
-
-int amd_iommu_init_device(struct pci_dev *pdev, int pasids)
-{
-	struct device_state *dev_state;
-	struct iommu_group *group;
-	unsigned long flags;
-	int ret, tmp;
-	u32 sbdf;
-
-	might_sleep();
-
-	/*
-	 * When memory encryption is active the device is likely not in a
-	 * direct-mapped domain. Forbid using IOMMUv2 functionality for now.
-	 */
-	if (cc_platform_has(CC_ATTR_MEM_ENCRYPT))
-		return -ENODEV;
-
-	if (!amd_iommu_v2_supported())
-		return -ENODEV;
-
-	if (pasids <= 0 || pasids > (PASID_MASK + 1))
-		return -EINVAL;
-
-	sbdf = get_pci_sbdf_id(pdev);
-
-	dev_state = kzalloc(sizeof(*dev_state), GFP_KERNEL);
-	if (dev_state == NULL)
-		return -ENOMEM;
-
-	spin_lock_init(&dev_state->lock);
-	init_waitqueue_head(&dev_state->wq);
-	dev_state->pdev  = pdev;
-	dev_state->sbdf = sbdf;
-
-	tmp = pasids;
-	for (dev_state->pasid_levels = 0; (tmp - 1) & ~0x1ff; tmp >>= 9)
-		dev_state->pasid_levels += 1;
-
-	atomic_set(&dev_state->count, 1);
-	dev_state->max_pasids = pasids;
-
-	ret = -ENOMEM;
-	dev_state->states = (void *)get_zeroed_page(GFP_KERNEL);
-	if (dev_state->states == NULL)
-		goto out_free_dev_state;
-
-	dev_state->domain = iommu_domain_alloc(&pci_bus_type);
-	if (dev_state->domain == NULL)
-		goto out_free_states;
-
-	/* See iommu_is_default_domain() */
-	dev_state->domain->type = IOMMU_DOMAIN_IDENTITY;
-	amd_iommu_domain_direct_map(dev_state->domain);
-
-	ret = amd_iommu_domain_enable_v2(dev_state->domain, pasids);
-	if (ret)
-		goto out_free_domain;
-
-	group = iommu_group_get(&pdev->dev);
-	if (!group) {
-		ret = -EINVAL;
-		goto out_free_domain;
-	}
-
-	ret = iommu_attach_group(dev_state->domain, group);
-	if (ret != 0)
-		goto out_drop_group;
-
-	iommu_group_put(group);
-
-	spin_lock_irqsave(&state_lock, flags);
-
-	if (__get_device_state(sbdf) != NULL) {
-		spin_unlock_irqrestore(&state_lock, flags);
-		ret = -EBUSY;
-		goto out_free_domain;
-	}
-
-	list_add_tail(&dev_state->list, &state_list);
-
-	spin_unlock_irqrestore(&state_lock, flags);
-
-	return 0;
-
-out_drop_group:
-	iommu_group_put(group);
-
-out_free_domain:
-	iommu_domain_free(dev_state->domain);
-
-out_free_states:
-	free_page((unsigned long)dev_state->states);
-
-out_free_dev_state:
-	kfree(dev_state);
-
-	return ret;
-}
-EXPORT_SYMBOL(amd_iommu_init_device);
-
-void amd_iommu_free_device(struct pci_dev *pdev)
-{
-	struct device_state *dev_state;
-	unsigned long flags;
-	u32 sbdf;
-
-	if (!amd_iommu_v2_supported())
-		return;
-
-	sbdf = get_pci_sbdf_id(pdev);
-
-	spin_lock_irqsave(&state_lock, flags);
-
-	dev_state = __get_device_state(sbdf);
-	if (dev_state == NULL) {
-		spin_unlock_irqrestore(&state_lock, flags);
-		return;
-	}
-
-	list_del(&dev_state->list);
-
-	spin_unlock_irqrestore(&state_lock, flags);
-
-	put_device_state(dev_state);
-	free_device_state(dev_state);
-}
-EXPORT_SYMBOL(amd_iommu_free_device);
-
-int amd_iommu_set_invalid_ppr_cb(struct pci_dev *pdev,
-				 amd_iommu_invalid_ppr_cb cb)
-{
-	struct device_state *dev_state;
-	unsigned long flags;
-	u32 sbdf;
-	int ret;
-
-	if (!amd_iommu_v2_supported())
-		return -ENODEV;
-
-	sbdf = get_pci_sbdf_id(pdev);
-
-	spin_lock_irqsave(&state_lock, flags);
-
-	ret = -EINVAL;
-	dev_state = __get_device_state(sbdf);
-	if (dev_state == NULL)
-		goto out_unlock;
-
-	dev_state->inv_ppr_cb = cb;
-
-	ret = 0;
-
-out_unlock:
-	spin_unlock_irqrestore(&state_lock, flags);
-
-	return ret;
-}
-EXPORT_SYMBOL(amd_iommu_set_invalid_ppr_cb);
-
-int amd_iommu_set_invalidate_ctx_cb(struct pci_dev *pdev,
-				    amd_iommu_invalidate_ctx cb)
-{
-	struct device_state *dev_state;
-	unsigned long flags;
-	u32 sbdf;
-	int ret;
-
-	if (!amd_iommu_v2_supported())
-		return -ENODEV;
-
-	sbdf = get_pci_sbdf_id(pdev);
-
-	spin_lock_irqsave(&state_lock, flags);
-
-	ret = -EINVAL;
-	dev_state = __get_device_state(sbdf);
-	if (dev_state == NULL)
-		goto out_unlock;
-
-	dev_state->inv_ctx_cb = cb;
-
-	ret = 0;
-
-out_unlock:
-	spin_unlock_irqrestore(&state_lock, flags);
-
-	return ret;
-}
-EXPORT_SYMBOL(amd_iommu_set_invalidate_ctx_cb);
-
-static int __init amd_iommu_v2_init(void)
-{
-	int ret;
-
-	if (!amd_iommu_v2_supported()) {
-		pr_info("AMD IOMMUv2 functionality not available on this system - This is not a bug.\n");
-		/*
-		 * Load anyway to provide the symbols to other modules
-		 * which may use AMD IOMMUv2 optionally.
-		 */
-		return 0;
-	}
-
-	ret = -ENOMEM;
-	iommu_wq = alloc_workqueue("amd_iommu_v2", WQ_MEM_RECLAIM, 0);
-	if (iommu_wq == NULL)
-		goto out;
-
-	amd_iommu_register_ppr_notifier(&ppr_nb);
-
-	pr_info("AMD IOMMUv2 loaded and initialized\n");
-
-	return 0;
-
-out:
-	return ret;
-}
-
-static void __exit amd_iommu_v2_exit(void)
-{
-	struct device_state *dev_state, *next;
-	unsigned long flags;
-	LIST_HEAD(freelist);
-
-	if (!amd_iommu_v2_supported())
-		return;
-
-	amd_iommu_unregister_ppr_notifier(&ppr_nb);
-
-	flush_workqueue(iommu_wq);
-
-	/*
-	 * The loop below might call flush_workqueue(), so call
-	 * destroy_workqueue() after it
-	 */
-	spin_lock_irqsave(&state_lock, flags);
-
-	list_for_each_entry_safe(dev_state, next, &state_list, list) {
-		WARN_ON_ONCE(1);
-
-		put_device_state(dev_state);
-		list_del(&dev_state->list);
-		list_add_tail(&dev_state->list, &freelist);
-	}
-
-	spin_unlock_irqrestore(&state_lock, flags);
-
-	/*
-	 * Since free_device_state waits on the count to be zero,
-	 * we need to free dev_state outside the spinlock.
-	 */
-	list_for_each_entry_safe(dev_state, next, &freelist, list) {
-		list_del(&dev_state->list);
-		free_device_state(dev_state);
-	}
-
-	destroy_workqueue(iommu_wq);
-}
-
-module_init(amd_iommu_v2_init);
-module_exit(amd_iommu_v2_exit);