summaryrefslogtreecommitdiff
path: root/include/linux
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2020-02-05 20:49:54 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-02-05 20:49:54 +0300
commit4fc2ea6a8608d9a649eff5e3c2ee477eb70f0fb6 (patch)
tree5b8c5656538961ffa67515dde551f470068904cb /include/linux
parentd271ab29230b1d0ceb426f374c221c4eb2c91c64 (diff)
parente3b5ee0cfb65646f4a915643fe53e0a51829d891 (diff)
downloadlinux-4fc2ea6a8608d9a649eff5e3c2ee477eb70f0fb6.tar.xz
Merge tag 'iommu-updates-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel: - Allow compiling the ARM-SMMU drivers as modules. - Fixes and cleanups for the ARM-SMMU drivers and io-pgtable code collected by Will Deacon. The merge-commit (6855d1ba7537) has all the details. - Cleanup of the iommu_put_resv_regions() call-backs in various drivers. - AMD IOMMU driver cleanups. - Update for the x2APIC support in the AMD IOMMU driver. - Preparation patches for Intel VT-d nested mode support. - RMRR and identity domain handling fixes for the Intel VT-d driver. - More small fixes and cleanups. * tag 'iommu-updates-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (87 commits) iommu/amd: Remove the unnecessary assignment iommu/vt-d: Remove unnecessary WARN_ON_ONCE() iommu/vt-d: Unnecessary to handle default identity domain iommu/vt-d: Allow devices with RMRRs to use identity domain iommu/vt-d: Add RMRR base and end addresses sanity check iommu/vt-d: Mark firmware tainted if RMRR fails sanity check iommu/amd: Remove unused struct member iommu/amd: Replace two consecutive readl calls with one readq iommu/vt-d: Don't reject Host Bridge due to scope mismatch PCI/ATS: Add PASID stubs iommu/arm-smmu-v3: Return -EBUSY when trying to re-add a device iommu/arm-smmu-v3: Improve add_device() error handling iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE iommu/arm-smmu-v3: Add second level of context descriptor table iommu/arm-smmu-v3: Prepare for handling arm_smmu_write_ctx_desc() failure iommu/arm-smmu-v3: Propagate ssid_bits iommu/arm-smmu-v3: Add support for Substream IDs iommu/arm-smmu-v3: Add context descriptor tables allocators iommu/arm-smmu-v3: Prepare arm_smmu_s1_cfg for SSID support ACPI/IORT: Parse SSID property of named component node ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/intel-iommu.h25
-rw-r--r--include/linux/io-pgtable.h27
-rw-r--r--include/linux/iommu.h19
-rw-r--r--include/linux/pci-ats.h3
4 files changed, 60 insertions, 14 deletions
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 6d8bf4bdf240..4a16b39ae353 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -34,10 +34,13 @@
#define VTD_STRIDE_SHIFT (9)
#define VTD_STRIDE_MASK (((u64)-1) << VTD_STRIDE_SHIFT)
-#define DMA_PTE_READ (1)
-#define DMA_PTE_WRITE (2)
-#define DMA_PTE_LARGE_PAGE (1 << 7)
-#define DMA_PTE_SNP (1 << 11)
+#define DMA_PTE_READ BIT_ULL(0)
+#define DMA_PTE_WRITE BIT_ULL(1)
+#define DMA_PTE_LARGE_PAGE BIT_ULL(7)
+#define DMA_PTE_SNP BIT_ULL(11)
+
+#define DMA_FL_PTE_PRESENT BIT_ULL(0)
+#define DMA_FL_PTE_XD BIT_ULL(63)
#define CONTEXT_TT_MULTI_LEVEL 0
#define CONTEXT_TT_DEV_IOTLB 1
@@ -435,8 +438,10 @@ enum {
#define VTD_FLAG_TRANS_PRE_ENABLED (1 << 0)
#define VTD_FLAG_IRQ_REMAP_PRE_ENABLED (1 << 1)
+#define VTD_FLAG_SVM_CAPABLE (1 << 2)
extern int intel_iommu_sm;
+extern spinlock_t device_domain_lock;
#define sm_supported(iommu) (intel_iommu_sm && ecap_smts((iommu)->ecap))
#define pasid_supported(iommu) (sm_supported(iommu) && \
@@ -609,10 +614,11 @@ static inline void dma_clear_pte(struct dma_pte *pte)
static inline u64 dma_pte_addr(struct dma_pte *pte)
{
#ifdef CONFIG_64BIT
- return pte->val & VTD_PAGE_MASK;
+ return pte->val & VTD_PAGE_MASK & (~DMA_FL_PTE_XD);
#else
/* Must have a full atomic 64-bit read */
- return __cmpxchg64(&pte->val, 0ULL, 0ULL) & VTD_PAGE_MASK;
+ return __cmpxchg64(&pte->val, 0ULL, 0ULL) &
+ VTD_PAGE_MASK & (~DMA_FL_PTE_XD);
#endif
}
@@ -645,6 +651,8 @@ extern void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
unsigned int size_order, u64 type);
extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 pfsid,
u16 qdep, u64 addr, unsigned mask);
+void qi_flush_piotlb(struct intel_iommu *iommu, u16 did, u32 pasid, u64 addr,
+ unsigned long npages, bool ih);
extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
extern int dmar_ir_support(void);
@@ -656,9 +664,10 @@ int for_each_device_domain(int (*fn)(struct device_domain_info *info,
void *data), void *data);
void iommu_flush_write_buffer(struct intel_iommu *iommu);
int intel_iommu_enable_pasid(struct intel_iommu *iommu, struct device *dev);
+struct dmar_domain *find_domain(struct device *dev);
#ifdef CONFIG_INTEL_IOMMU_SVM
-int intel_svm_init(struct intel_iommu *iommu);
+extern void intel_svm_check(struct intel_iommu *iommu);
extern int intel_svm_enable_prq(struct intel_iommu *iommu);
extern int intel_svm_finish_prq(struct intel_iommu *iommu);
@@ -686,6 +695,8 @@ struct intel_svm {
};
extern struct intel_iommu *intel_svm_device_to_iommu(struct device *dev);
+#else
+static inline void intel_svm_check(struct intel_iommu *iommu) {}
#endif
#ifdef CONFIG_INTEL_IOMMU_DEBUGFS
diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h
index ee21eedafe98..53d53c6c2be9 100644
--- a/include/linux/io-pgtable.h
+++ b/include/linux/io-pgtable.h
@@ -83,12 +83,16 @@ struct io_pgtable_cfg {
* IO_PGTABLE_QUIRK_NON_STRICT: Skip issuing synchronous leaf TLBIs
* on unmap, for DMA domains using the flush queue mechanism for
* delayed invalidation.
+ *
+ * IO_PGTABLE_QUIRK_ARM_TTBR1: (ARM LPAE format) Configure the table
+ * for use in the upper half of a split address space.
*/
#define IO_PGTABLE_QUIRK_ARM_NS BIT(0)
#define IO_PGTABLE_QUIRK_NO_PERMS BIT(1)
#define IO_PGTABLE_QUIRK_TLBI_ON_MAP BIT(2)
#define IO_PGTABLE_QUIRK_ARM_MTK_EXT BIT(3)
#define IO_PGTABLE_QUIRK_NON_STRICT BIT(4)
+ #define IO_PGTABLE_QUIRK_ARM_TTBR1 BIT(5)
unsigned long quirks;
unsigned long pgsize_bitmap;
unsigned int ias;
@@ -100,18 +104,33 @@ struct io_pgtable_cfg {
/* Low-level data specific to the table format */
union {
struct {
- u64 ttbr[2];
- u64 tcr;
+ u64 ttbr;
+ struct {
+ u32 ips:3;
+ u32 tg:2;
+ u32 sh:2;
+ u32 orgn:2;
+ u32 irgn:2;
+ u32 tsz:6;
+ } tcr;
u64 mair;
} arm_lpae_s1_cfg;
struct {
u64 vttbr;
- u64 vtcr;
+ struct {
+ u32 ps:3;
+ u32 tg:2;
+ u32 sh:2;
+ u32 orgn:2;
+ u32 irgn:2;
+ u32 sl:2;
+ u32 tsz:6;
+ } vtcr;
} arm_lpae_s2_cfg;
struct {
- u32 ttbr[2];
+ u32 ttbr;
u32 tcr;
u32 nmrr;
u32 prrr;
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index f2223cbb5fd5..d1b5f4d98569 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -246,9 +246,10 @@ struct iommu_iotlb_gather {
* @sva_get_pasid: Get PASID associated to a SVA handle
* @page_response: handle page request response
* @cache_invalidate: invalidate translation caches
- * @pgsize_bitmap: bitmap of all possible supported page sizes
* @sva_bind_gpasid: bind guest pasid and mm
* @sva_unbind_gpasid: unbind guest pasid and mm
+ * @pgsize_bitmap: bitmap of all possible supported page sizes
+ * @owner: Driver module providing these ops
*/
struct iommu_ops {
bool (*capable)(enum iommu_cap);
@@ -318,6 +319,7 @@ struct iommu_ops {
int (*sva_unbind_gpasid)(struct device *dev, int pasid);
unsigned long pgsize_bitmap;
+ struct module *owner;
};
/**
@@ -386,12 +388,19 @@ void iommu_device_sysfs_remove(struct iommu_device *iommu);
int iommu_device_link(struct iommu_device *iommu, struct device *link);
void iommu_device_unlink(struct iommu_device *iommu, struct device *link);
-static inline void iommu_device_set_ops(struct iommu_device *iommu,
- const struct iommu_ops *ops)
+static inline void __iommu_device_set_ops(struct iommu_device *iommu,
+ const struct iommu_ops *ops)
{
iommu->ops = ops;
}
+#define iommu_device_set_ops(iommu, ops) \
+do { \
+ struct iommu_ops *__ops = (struct iommu_ops *)(ops); \
+ __ops->owner = THIS_MODULE; \
+ __iommu_device_set_ops(iommu, __ops); \
+} while (0)
+
static inline void iommu_device_set_fwnode(struct iommu_device *iommu,
struct fwnode_handle *fwnode)
{
@@ -456,6 +465,8 @@ extern void iommu_set_fault_handler(struct iommu_domain *domain,
extern void iommu_get_resv_regions(struct device *dev, struct list_head *list);
extern void iommu_put_resv_regions(struct device *dev, struct list_head *list);
+extern void generic_iommu_put_resv_regions(struct device *dev,
+ struct list_head *list);
extern int iommu_request_dm_for_dev(struct device *dev);
extern int iommu_request_dma_domain_for_dev(struct device *dev);
extern void iommu_set_default_passthrough(bool cmd_line);
@@ -570,6 +581,7 @@ struct iommu_group *fsl_mc_device_group(struct device *dev);
* @ops: ops for this device's IOMMU
* @iommu_fwnode: firmware handle for this device's IOMMU
* @iommu_priv: IOMMU driver private data for this device
+ * @num_pasid_bits: number of PASID bits supported by this device
* @num_ids: number of associated device IDs
* @ids: IDs which this device may present to the IOMMU
*/
@@ -578,6 +590,7 @@ struct iommu_fwspec {
struct fwnode_handle *iommu_fwnode;
void *iommu_priv;
u32 flags;
+ u32 num_pasid_bits;
unsigned int num_ids;
u32 ids[1];
};
diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h
index 5d62e78946a3..d08f0869f121 100644
--- a/include/linux/pci-ats.h
+++ b/include/linux/pci-ats.h
@@ -33,6 +33,9 @@ void pci_disable_pasid(struct pci_dev *pdev);
int pci_pasid_features(struct pci_dev *pdev);
int pci_max_pasids(struct pci_dev *pdev);
#else /* CONFIG_PCI_PASID */
+static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
+{ return -EINVAL; }
+static inline void pci_disable_pasid(struct pci_dev *pdev) { }
static inline int pci_pasid_features(struct pci_dev *pdev)
{ return -EINVAL; }
static inline int pci_max_pasids(struct pci_dev *pdev)