diff options
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 351 |
1 files changed, 192 insertions, 159 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 2e925b5eba53..156732807994 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -41,7 +41,12 @@ struct iommu_dirty_ops; struct notifier_block; struct iommu_sva; struct iommu_dma_cookie; +struct iommu_dma_msi_cookie; struct iommu_fault_param; +struct iommufd_ctx; +struct iommufd_viommu; +struct msi_desc; +struct msi_msg; #define IOMMU_FAULT_PERM_READ (1 << 0) /* read */ #define IOMMU_FAULT_PERM_WRITE (1 << 1) /* write */ @@ -69,8 +74,7 @@ enum iommu_fault_type { struct iommu_fault_page_request { #define IOMMU_FAULT_PAGE_REQUEST_PASID_VALID (1 << 0) #define IOMMU_FAULT_PAGE_REQUEST_LAST_PAGE (1 << 1) -#define IOMMU_FAULT_PAGE_REQUEST_PRIV_DATA (1 << 2) -#define IOMMU_FAULT_PAGE_RESPONSE_NEEDS_PASID (1 << 3) +#define IOMMU_FAULT_PAGE_RESPONSE_NEEDS_PASID (1 << 2) u32 flags; u32 pasid; u32 grpid; @@ -125,12 +129,16 @@ struct iopf_fault { struct iopf_group { struct iopf_fault last_fault; struct list_head faults; + size_t fault_count; /* list node for iommu_fault_param::faults */ struct list_head pending_node; struct work_struct work; - struct iommu_domain *domain; + struct iommu_attach_handle *attach_handle; /* The device's fault data parameter. */ struct iommu_fault_param *fault_param; + /* Used by handler provider to hook the group on its own lists. */ + struct list_head node; + u32 cookie; }; /** @@ -158,6 +166,15 @@ struct iommu_domain_geometry { bool force_aperture; /* DMA only allowed in mappable range? */ }; +enum iommu_domain_cookie_type { + IOMMU_COOKIE_NONE, + IOMMU_COOKIE_DMA_IOVA, + IOMMU_COOKIE_DMA_MSI, + IOMMU_COOKIE_FAULT_HANDLER, + IOMMU_COOKIE_SVA, + IOMMU_COOKIE_IOMMUFD, +}; + /* Domain feature flags */ #define __IOMMU_DOMAIN_PAGING (1U << 0) /* Support for iommu_map/unmap */ #define __IOMMU_DOMAIN_DMA_API (1U << 1) /* Domain for use in DMA-API @@ -204,15 +221,18 @@ struct iommu_domain_geometry { struct iommu_domain { unsigned type; + enum iommu_domain_cookie_type cookie_type; const struct iommu_domain_ops *ops; const struct iommu_dirty_ops *dirty_ops; const struct iommu_ops *owner; /* Whose domain_alloc we came from */ unsigned long pgsize_bitmap; /* Bitmap of page sizes in use */ struct iommu_domain_geometry geometry; - struct iommu_dma_cookie *iova_cookie; int (*iopf_handler)(struct iopf_group *group); - void *fault_data; - union { + + union { /* cookie */ + struct iommu_dma_cookie *iova_cookie; + struct iommu_dma_msi_cookie *msi_cookie; + struct iommufd_hw_pagetable *iommufd_hwpt; struct { iommu_fault_handler_t handler; void *handler_token; @@ -296,28 +316,26 @@ struct iommu_iort_rmr_data { u32 num_sids; }; -/** - * enum iommu_dev_features - Per device IOMMU features - * @IOMMU_DEV_FEAT_SVA: Shared Virtual Addresses - * @IOMMU_DEV_FEAT_IOPF: I/O Page Faults such as PRI or Stall. Generally - * enabling %IOMMU_DEV_FEAT_SVA requires - * %IOMMU_DEV_FEAT_IOPF, but some devices manage I/O Page - * Faults themselves instead of relying on the IOMMU. When - * supported, this feature must be enabled before and - * disabled after %IOMMU_DEV_FEAT_SVA. - * - * Device drivers enable a feature using iommu_dev_enable_feature(). - */ -enum iommu_dev_features { - IOMMU_DEV_FEAT_SVA, - IOMMU_DEV_FEAT_IOPF, -}; - #define IOMMU_NO_PASID (0U) /* Reserved for DMA w/o PASID */ #define IOMMU_FIRST_GLOBAL_PASID (1U) /*starting range for allocation */ #define IOMMU_PASID_INVALID (-1U) typedef unsigned int ioasid_t; +/* Read but do not clear any dirty bits */ +#define IOMMU_DIRTY_NO_CLEAR (1 << 0) + +/* + * Pages allocated through iommu_alloc_pages_node_sz() can be placed on this + * list using iommu_pages_list_add(). Note: ONLY pages from + * iommu_alloc_pages_node_sz() can be used this way! + */ +struct iommu_pages_list { + struct list_head pages; +}; + +#define IOMMU_PAGES_LIST_INIT(name) \ + ((struct iommu_pages_list){ .pages = LIST_HEAD_INIT(name.pages) }) + #ifdef CONFIG_IOMMU_API /** @@ -340,7 +358,7 @@ struct iommu_iotlb_gather { unsigned long start; unsigned long end; size_t pgsize; - struct list_head freelist; + struct iommu_pages_list freelist; bool queued; }; @@ -354,9 +372,6 @@ struct iommu_dirty_bitmap { struct iommu_iotlb_gather *gather; }; -/* Read but do not clear any dirty bits */ -#define IOMMU_DIRTY_NO_CLEAR (1 << 0) - /** * struct iommu_dirty_ops - domain specific dirty tracking operations * @set_dirty_tracking: Enable or Disable dirty tracking on the iommu domain @@ -420,10 +435,10 @@ static inline int __iommu_copy_struct_from_user( void *dst_data, const struct iommu_user_data *src_data, unsigned int data_type, size_t data_len, size_t min_len) { - if (src_data->type != data_type) - return -EINVAL; if (WARN_ON(!dst_data || !src_data)) return -EINVAL; + if (src_data->type != data_type) + return -EINVAL; if (src_data->len < min_len || data_len < src_data->len) return -EINVAL; return copy_struct_from_user(dst_data, data_len, src_data->uptr, @@ -436,8 +451,8 @@ static inline int __iommu_copy_struct_from_user( * include/uapi/linux/iommufd.h * @user_data: Pointer to a struct iommu_user_data for user space data info * @data_type: The data type of the @kdst. Must match with @user_data->type - * @min_last: The last memember of the data structure @kdst points in the - * initial version. + * @min_last: The last member of the data structure @kdst points in the initial + * version. * Return 0 for success, otherwise -error. */ #define iommu_copy_struct_from_user(kdst, user_data, data_type, min_last) \ @@ -488,7 +503,9 @@ static inline int __iommu_copy_struct_from_user_array( * @index: Index to the location in the array to copy user data from * @min_last: The last member of the data structure @kdst points in the * initial version. - * Return 0 for success, otherwise -error. + * + * Copy a single entry from a user array. Return 0 for success, otherwise + * -error. */ #define iommu_copy_struct_from_user_array(kdst, user_array, data_type, index, \ min_last) \ @@ -497,27 +514,73 @@ static inline int __iommu_copy_struct_from_user_array( offsetofend(typeof(*(kdst)), min_last)) /** + * iommu_copy_struct_from_full_user_array - Copy iommu driver specific user + * space data from an iommu_user_data_array + * @kdst: Pointer to an iommu driver specific user data that is defined in + * include/uapi/linux/iommufd.h + * @kdst_entry_size: sizeof(*kdst) + * @user_array: Pointer to a struct iommu_user_data_array for a user space + * array + * @data_type: The data type of the @kdst. Must match with @user_array->type + * + * Copy the entire user array. kdst must have room for kdst_entry_size * + * user_array->entry_num bytes. Return 0 for success, otherwise -error. + */ +static inline int +iommu_copy_struct_from_full_user_array(void *kdst, size_t kdst_entry_size, + struct iommu_user_data_array *user_array, + unsigned int data_type) +{ + unsigned int i; + int ret; + + if (user_array->type != data_type) + return -EINVAL; + if (!user_array->entry_num) + return -EINVAL; + if (likely(user_array->entry_len == kdst_entry_size)) { + if (copy_from_user(kdst, user_array->uptr, + user_array->entry_num * + user_array->entry_len)) + return -EFAULT; + } + + /* Copy item by item */ + for (i = 0; i != user_array->entry_num; i++) { + ret = copy_struct_from_user( + kdst + kdst_entry_size * i, kdst_entry_size, + user_array->uptr + user_array->entry_len * i, + user_array->entry_len); + if (ret) + return ret; + } + return 0; +} + +/** * struct iommu_ops - iommu ops and capabilities * @capable: check capability * @hw_info: report iommu hardware information. The data buffer returned by this * op is allocated in the iommu driver and freed by the caller after * use. The information type is one of enum iommu_hw_info_type defined * in include/uapi/linux/iommufd.h. - * @domain_alloc: allocate and return an iommu domain if success. Otherwise - * NULL is returned. The domain is not fully initialized until - * the caller iommu_domain_alloc() returns. - * @domain_alloc_user: Allocate an iommu domain corresponding to the input - * parameters as defined in include/uapi/linux/iommufd.h. - * Unlike @domain_alloc, it is called only by IOMMUFD and - * must fully initialize the new domain before return. - * Upon success, if the @user_data is valid and the @parent - * points to a kernel-managed domain, the new domain must be - * IOMMU_DOMAIN_NESTED type; otherwise, the @parent must be - * NULL while the @user_data can be optionally provided, the - * new domain must support __IOMMU_DOMAIN_PAGING. - * Upon failure, ERR_PTR must be returned. + * @domain_alloc: Do not use in new drivers + * @domain_alloc_identity: allocate an IDENTITY domain. Drivers should prefer to + * use identity_domain instead. This should only be used + * if dynamic logic is necessary. + * @domain_alloc_paging_flags: Allocate an iommu domain corresponding to the + * input parameters as defined in + * include/uapi/linux/iommufd.h. The @user_data can be + * optionally provided, the new domain must support + * __IOMMU_DOMAIN_PAGING. Upon failure, ERR_PTR must be + * returned. * @domain_alloc_paging: Allocate an iommu_domain that can be used for - * UNMANAGED, DMA, and DMA_FQ domain types. + * UNMANAGED, DMA, and DMA_FQ domain types. This is the + * same as invoking domain_alloc_paging_flags() with + * @flags=0, @user_data=NULL. A driver should implement + * only one of the two ops. + * @domain_alloc_sva: Allocate an iommu_domain for Shared Virtual Addressing. + * @domain_alloc_nested: Allocate an iommu_domain for nested translation. * @probe_device: Add device to iommu driver handling * @release_device: Remove device from iommu driver handling * @probe_finalize: Do final setup work after the device is added to an IOMMU @@ -527,17 +590,20 @@ static inline int __iommu_copy_struct_from_user_array( * @of_xlate: add OF master IDs to iommu grouping * @is_attach_deferred: Check if domain attach should be deferred from iommu * driver init to device driver init (default no) - * @dev_enable/disable_feat: per device entries to enable/disable - * iommu specific features. * @page_response: handle page request response * @def_domain_type: device default domain type, return value: * - IOMMU_DOMAIN_IDENTITY: must use an identity domain * - IOMMU_DOMAIN_DMA: must use a dma domain * - 0: use the default setting * @default_domain_ops: the default ops for domains - * @remove_dev_pasid: Remove any translation configurations of a specific - * pasid, so that any DMA transactions with this pasid - * will be blocked by the hardware. + * @viommu_alloc: Allocate an iommufd_viommu on a physical IOMMU instance behind + * the @dev, as the set of virtualization resources shared/passed + * to user space IOMMU instance. And associate it with a nesting + * @parent_domain. The @viommu_type must be defined in the header + * include/uapi/linux/iommufd.h + * It is required to call iommufd_viommu_alloc() helper for + * a bundled allocation of the core and the driver structures, + * using the given @ictx pointer. * @pgsize_bitmap: bitmap of all possible supported page sizes * @owner: Driver module providing these ops * @identity_domain: An always available, always attachable identity @@ -547,17 +613,29 @@ static inline int __iommu_copy_struct_from_user_array( * @default_domain: If not NULL this will always be set as the default domain. * This should be an IDENTITY/BLOCKED/PLATFORM domain. * Do not use in new drivers. + * @user_pasid_table: IOMMU driver supports user-managed PASID table. There is + * no user domain for each PASID and the I/O page faults are + * forwarded through the user domain attached to the device + * RID. */ struct iommu_ops { bool (*capable)(struct device *dev, enum iommu_cap); void *(*hw_info)(struct device *dev, u32 *length, u32 *type); /* Domain allocation and freeing by the iommu driver */ +#if IS_ENABLED(CONFIG_FSL_PAMU) struct iommu_domain *(*domain_alloc)(unsigned iommu_domain_type); - struct iommu_domain *(*domain_alloc_user)( - struct device *dev, u32 flags, struct iommu_domain *parent, +#endif + struct iommu_domain *(*domain_alloc_identity)(struct device *dev); + struct iommu_domain *(*domain_alloc_paging_flags)( + struct device *dev, u32 flags, const struct iommu_user_data *user_data); struct iommu_domain *(*domain_alloc_paging)(struct device *dev); + struct iommu_domain *(*domain_alloc_sva)(struct device *dev, + struct mm_struct *mm); + struct iommu_domain *(*domain_alloc_nested)( + struct device *dev, struct iommu_domain *parent, u32 flags, + const struct iommu_user_data *user_data); struct iommu_device *(*probe_device)(struct device *dev); void (*release_device)(struct device *dev); @@ -571,14 +649,14 @@ struct iommu_ops { bool (*is_attach_deferred)(struct device *dev); /* Per device IOMMU features */ - int (*dev_enable_feat)(struct device *dev, enum iommu_dev_features f); - int (*dev_disable_feat)(struct device *dev, enum iommu_dev_features f); - void (*page_response)(struct device *dev, struct iopf_fault *evt, struct iommu_page_response *msg); int (*def_domain_type)(struct device *dev); - void (*remove_dev_pasid)(struct device *dev, ioasid_t pasid); + + struct iommufd_viommu *(*viommu_alloc)( + struct device *dev, struct iommu_domain *parent_domain, + struct iommufd_ctx *ictx, unsigned int viommu_type); const struct iommu_domain_ops *default_domain_ops; unsigned long pgsize_bitmap; @@ -587,6 +665,7 @@ struct iommu_ops { struct iommu_domain *blocked_domain; struct iommu_domain *release_domain; struct iommu_domain *default_domain; + u8 user_pasid_table:1; }; /** @@ -604,7 +683,8 @@ struct iommu_ops { * * EBUSY - device is attached to a domain and cannot be changed * * ENODEV - device specific errors, not able to be attached * * <others> - treated as ENODEV by the caller. Use is discouraged - * @set_dev_pasid: set an iommu domain to a pasid of device + * @set_dev_pasid: set or replace an iommu domain to a pasid of device. The pasid of + * the device should be left in the old config in error case. * @map_pages: map a physically contiguous set of pages of the same size to * an iommu domain. * @unmap_pages: unmap a number of pages of the same size from an iommu domain @@ -623,14 +703,13 @@ struct iommu_ops { * @enforce_cache_coherency: Prevent any kind of DMA from bypassing IOMMU_CACHE, * including no-snoop TLPs on PCIe or other platform * specific mechanisms. - * @enable_nesting: Enable nesting * @set_pgtable_quirks: Set io page table quirks (IO_PGTABLE_QUIRK_*) * @free: Release the domain after use. */ struct iommu_domain_ops { int (*attach_dev)(struct iommu_domain *domain, struct device *dev); int (*set_dev_pasid)(struct iommu_domain *domain, struct device *dev, - ioasid_t pasid); + ioasid_t pasid, struct iommu_domain *old); int (*map_pages)(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t pgsize, size_t pgcount, @@ -651,7 +730,6 @@ struct iommu_domain_ops { dma_addr_t iova); bool (*enforce_cache_coherency)(struct iommu_domain *domain); - int (*enable_nesting)(struct iommu_domain *domain); int (*set_pgtable_quirks)(struct iommu_domain *domain, unsigned long quirks); @@ -666,6 +744,7 @@ struct iommu_domain_ops { * @dev: struct device for sysfs handling * @singleton_group: Used internally for drivers that have only one group * @max_pasids: number of supported PASIDs + * @ready: set once iommu_device_register() has completed successfully */ struct iommu_device { struct list_head list; @@ -674,6 +753,7 @@ struct iommu_device { struct device *dev; struct iommu_group *singleton_group; u32 max_pasids; + bool ready; }; /** @@ -768,26 +848,30 @@ static inline void iommu_iotlb_gather_init(struct iommu_iotlb_gather *gather) { *gather = (struct iommu_iotlb_gather) { .start = ULONG_MAX, - .freelist = LIST_HEAD_INIT(gather->freelist), + .freelist = IOMMU_PAGES_LIST_INIT(gather->freelist), }; } -extern int bus_iommu_probe(const struct bus_type *bus); -extern bool iommu_present(const struct bus_type *bus); extern bool device_iommu_capable(struct device *dev, enum iommu_cap cap); extern bool iommu_group_has_isolated_msi(struct iommu_group *group); -extern struct iommu_domain *iommu_domain_alloc(const struct bus_type *bus); +struct iommu_domain *iommu_paging_domain_alloc_flags(struct device *dev, unsigned int flags); +static inline struct iommu_domain *iommu_paging_domain_alloc(struct device *dev) +{ + return iommu_paging_domain_alloc_flags(dev, 0); +} extern void iommu_domain_free(struct iommu_domain *domain); extern int iommu_attach_device(struct iommu_domain *domain, struct device *dev); extern void iommu_detach_device(struct iommu_domain *domain, struct device *dev); -extern int iommu_sva_unbind_gpasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid); extern struct iommu_domain *iommu_get_domain_for_dev(struct device *dev); extern struct iommu_domain *iommu_get_dma_domain(struct device *dev); extern int iommu_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t size, int prot, gfp_t gfp); +int iommu_map_nosync(struct iommu_domain *domain, unsigned long iova, + phys_addr_t paddr, size_t size, int prot, gfp_t gfp); +int iommu_sync_map(struct iommu_domain *domain, unsigned long iova, + size_t size); extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova, size_t size); extern size_t iommu_unmap_fast(struct iommu_domain *domain, @@ -833,7 +917,6 @@ extern void iommu_group_put(struct iommu_group *group); extern int iommu_group_id(struct iommu_group *group); extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); -int iommu_enable_nesting(struct iommu_domain *domain); int iommu_set_pgtable_quirks(struct iommu_domain *domain, unsigned long quirks); @@ -965,7 +1048,6 @@ extern struct iommu_group *generic_single_device_group(struct device *dev); /** * struct iommu_fwspec - per-device IOMMU instance data - * @ops: ops for this device's IOMMU * @iommu_fwnode: firmware handle for this device's IOMMU * @flags: IOMMU_FWSPEC_* flags * @num_ids: number of associated device IDs @@ -976,7 +1058,6 @@ extern struct iommu_group *generic_single_device_group(struct device *dev); * consumers. */ struct iommu_fwspec { - const struct iommu_ops *ops; struct fwnode_handle *iommu_fwnode; u32 flags; unsigned int num_ids; @@ -985,28 +1066,35 @@ struct iommu_fwspec { /* ATS is supported */ #define IOMMU_FWSPEC_PCI_RC_ATS (1 << 0) +/* CANWBS is supported */ +#define IOMMU_FWSPEC_PCI_RC_CANWBS (1 << 1) + +/* + * An iommu attach handle represents a relationship between an iommu domain + * and a PASID or RID of a device. It is allocated and managed by the component + * that manages the domain and is stored in the iommu group during the time the + * domain is attached. + */ +struct iommu_attach_handle { + struct iommu_domain *domain; +}; /** * struct iommu_sva - handle to a device-mm bond */ struct iommu_sva { + struct iommu_attach_handle handle; struct device *dev; - struct iommu_domain *domain; - struct list_head handle_item; refcount_t users; }; struct iommu_mm_data { u32 pasid; struct list_head sva_domains; - struct list_head sva_handles; }; -int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode, - const struct iommu_ops *ops); -void iommu_fwspec_free(struct device *dev); +int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode); int iommu_fwspec_add_ids(struct device *dev, const u32 *ids, int num_ids); -const struct iommu_ops *iommu_ops_from_fwnode(const struct fwnode_handle *fwnode); static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev) { @@ -1035,9 +1123,6 @@ void dev_iommu_priv_set(struct device *dev, void *priv); extern struct mutex iommu_probe_device_lock; int iommu_probe_device(struct device *dev); -int iommu_dev_enable_feature(struct device *dev, enum iommu_dev_features f); -int iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features f); - int iommu_device_use_default_domain(struct device *dev); void iommu_device_unuse_default_domain(struct device *dev); @@ -1049,12 +1134,10 @@ int iommu_device_claim_dma_owner(struct device *dev, void *owner); void iommu_device_release_dma_owner(struct device *dev); int iommu_attach_device_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid); + struct device *dev, ioasid_t pasid, + struct iommu_attach_handle *handle); void iommu_detach_device_pasid(struct iommu_domain *domain, struct device *dev, ioasid_t pasid); -struct iommu_domain * -iommu_get_domain_for_dev_pasid(struct device *dev, ioasid_t pasid, - unsigned int type); ioasid_t iommu_alloc_global_pasid(struct device *dev); void iommu_free_global_pasid(ioasid_t pasid); #else /* CONFIG_IOMMU_API */ @@ -1068,19 +1151,20 @@ struct iommu_iotlb_gather {}; struct iommu_dirty_bitmap {}; struct iommu_dirty_ops {}; -static inline bool iommu_present(const struct bus_type *bus) +static inline bool device_iommu_capable(struct device *dev, enum iommu_cap cap) { return false; } -static inline bool device_iommu_capable(struct device *dev, enum iommu_cap cap) +static inline struct iommu_domain *iommu_paging_domain_alloc_flags(struct device *dev, + unsigned int flags) { - return false; + return ERR_PTR(-ENODEV); } -static inline struct iommu_domain *iommu_domain_alloc(const struct bus_type *bus) +static inline struct iommu_domain *iommu_paging_domain_alloc(struct device *dev) { - return NULL; + return ERR_PTR(-ENODEV); } static inline void iommu_domain_free(struct iommu_domain *domain) @@ -1312,40 +1396,17 @@ static inline void iommu_device_unlink(struct device *dev, struct device *link) } static inline int iommu_fwspec_init(struct device *dev, - struct fwnode_handle *iommu_fwnode, - const struct iommu_ops *ops) + struct fwnode_handle *iommu_fwnode) { return -ENODEV; } -static inline void iommu_fwspec_free(struct device *dev) -{ -} - static inline int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids) { return -ENODEV; } -static inline -const struct iommu_ops *iommu_ops_from_fwnode(const struct fwnode_handle *fwnode) -{ - return NULL; -} - -static inline int -iommu_dev_enable_feature(struct device *dev, enum iommu_dev_features feat) -{ - return -ENODEV; -} - -static inline int -iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features feat) -{ - return -ENODEV; -} - static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev) { return NULL; @@ -1385,7 +1446,8 @@ static inline int iommu_device_claim_dma_owner(struct device *dev, void *owner) } static inline int iommu_attach_device_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid) + struct device *dev, ioasid_t pasid, + struct iommu_attach_handle *handle) { return -ENODEV; } @@ -1395,13 +1457,6 @@ static inline void iommu_detach_device_pasid(struct iommu_domain *domain, { } -static inline struct iommu_domain * -iommu_get_domain_for_dev_pasid(struct device *dev, ioasid_t pasid, - unsigned int type) -{ - return NULL; -} - static inline ioasid_t iommu_alloc_global_pasid(struct device *dev) { return IOMMU_PASID_INVALID; @@ -1410,6 +1465,18 @@ static inline ioasid_t iommu_alloc_global_pasid(struct device *dev) static inline void iommu_free_global_pasid(ioasid_t pasid) {} #endif /* CONFIG_IOMMU_API */ +#ifdef CONFIG_IRQ_MSI_IOMMU +#ifdef CONFIG_IOMMU_API +int iommu_dma_prepare_msi(struct msi_desc *desc, phys_addr_t msi_addr); +#else +static inline int iommu_dma_prepare_msi(struct msi_desc *desc, + phys_addr_t msi_addr) +{ + return 0; +} +#endif /* CONFIG_IOMMU_API */ +#endif /* CONFIG_IRQ_MSI_IOMMU */ + #if IS_ENABLED(CONFIG_LOCKDEP) && IS_ENABLED(CONFIG_IOMMU_API) void iommu_group_mutex_assert(struct device *dev); #else @@ -1443,39 +1510,12 @@ static inline void iommu_debugfs_setup(void) {} #endif #ifdef CONFIG_IOMMU_DMA -#include <linux/msi.h> - -/* Setup call for arch DMA mapping code */ -void iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 dma_limit); - int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base); - -int iommu_dma_prepare_msi(struct msi_desc *desc, phys_addr_t msi_addr); -void iommu_dma_compose_msi_msg(struct msi_desc *desc, struct msi_msg *msg); - #else /* CONFIG_IOMMU_DMA */ - -struct msi_desc; -struct msi_msg; - -static inline void iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 dma_limit) -{ -} - static inline int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base) { return -ENODEV; } - -static inline int iommu_dma_prepare_msi(struct msi_desc *desc, phys_addr_t msi_addr) -{ - return 0; -} - -static inline void iommu_dma_compose_msi_msg(struct msi_desc *desc, struct msi_msg *msg) -{ -} - #endif /* CONFIG_IOMMU_DMA */ /* @@ -1531,13 +1571,11 @@ struct iommu_sva *iommu_sva_bind_device(struct device *dev, struct mm_struct *mm); void iommu_sva_unbind_device(struct iommu_sva *handle); u32 iommu_sva_get_pasid(struct iommu_sva *handle); -struct iommu_domain *iommu_sva_domain_alloc(struct device *dev, - struct mm_struct *mm); #else static inline struct iommu_sva * iommu_sva_bind_device(struct device *dev, struct mm_struct *mm) { - return NULL; + return ERR_PTR(-ENODEV); } static inline void iommu_sva_unbind_device(struct iommu_sva *handle) @@ -1557,12 +1595,6 @@ static inline u32 mm_get_enqcmd_pasid(struct mm_struct *mm) } static inline void mm_pasid_drop(struct mm_struct *mm) {} - -static inline struct iommu_domain * -iommu_sva_domain_alloc(struct device *dev, struct mm_struct *mm) -{ - return NULL; -} #endif /* CONFIG_IOMMU_SVA */ #ifdef CONFIG_IOMMU_IOPF @@ -1573,7 +1605,7 @@ struct iopf_queue *iopf_queue_alloc(const char *name); void iopf_queue_free(struct iopf_queue *queue); int iopf_queue_discard_partial(struct iopf_queue *queue); void iopf_free_group(struct iopf_group *group); -void iommu_report_device_fault(struct device *dev, struct iopf_fault *evt); +int iommu_report_device_fault(struct device *dev, struct iopf_fault *evt); void iopf_group_response(struct iopf_group *group, enum iommu_page_response_code status); #else @@ -1611,9 +1643,10 @@ static inline void iopf_free_group(struct iopf_group *group) { } -static inline void +static inline int iommu_report_device_fault(struct device *dev, struct iopf_fault *evt) { + return -ENODEV; } static inline void iopf_group_response(struct iopf_group *group, |