diff options
Diffstat (limited to 'include/linux/io-pgtable.h')
| -rw-r--r-- | include/linux/io-pgtable.h | 72 |
1 files changed, 41 insertions, 31 deletions
diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h index 53d53c6c2be9..1f068dfdb140 100644 --- a/include/linux/io-pgtable.h +++ b/include/linux/io-pgtable.h @@ -15,6 +15,10 @@ enum io_pgtable_fmt { ARM_64_LPAE_S2, ARM_V7S, ARM_MALI_LPAE, + AMD_IOMMU_V1, + AMD_IOMMU_V2, + APPLE_DART, + APPLE_DART2, IO_PGTABLE_NUM_FMTS, }; @@ -25,13 +29,11 @@ enum io_pgtable_fmt { * @tlb_flush_walk: Synchronously invalidate all intermediate TLB state * (sometimes referred to as the "walk cache") for a virtual * address range. - * @tlb_flush_leaf: Synchronously invalidate all leaf TLB state for a virtual - * address range. * @tlb_add_page: Optional callback to queue up leaf TLB invalidation for a * single page. IOMMUs that cannot batch TLB invalidation * operations efficiently will typically issue them here, but * others may decide to update the iommu_iotlb_gather structure - * and defer the invalidation until iommu_tlb_sync() instead. + * and defer the invalidation until iommu_iotlb_sync() instead. * * Note that these can all be called in atomic context and must therefore * not block. @@ -40,8 +42,6 @@ struct iommu_flush_ops { void (*tlb_flush_all)(void *cookie); void (*tlb_flush_walk)(unsigned long iova, size_t size, size_t granule, void *cookie); - void (*tlb_flush_leaf)(unsigned long iova, size_t size, size_t granule, - void *cookie); void (*tlb_add_page)(struct iommu_iotlb_gather *gather, unsigned long iova, size_t granule, void *cookie); }; @@ -72,27 +72,26 @@ struct io_pgtable_cfg { * hardware which does not implement the permissions of a given * format, and/or requires some format-specific default value. * - * IO_PGTABLE_QUIRK_TLBI_ON_MAP: If the format forbids caching invalid - * (unmapped) entries but the hardware might do so anyway, perform - * TLB maintenance when mapping as well as when unmapping. - * * IO_PGTABLE_QUIRK_ARM_MTK_EXT: (ARM v7s format) MediaTek IOMMUs extend - * to support up to 34 bits PA where the bit32 and bit33 are - * encoded in the bit9 and bit4 of the PTE respectively. + * to support up to 35 bits PA where the bit32, bit33 and bit34 are + * encoded in the bit9, bit4 and bit5 of the PTE respectively. * - * 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_MTK_TTBR_EXT: (ARM v7s format) MediaTek IOMMUs + * extend the translation table base support up to 35 bits PA, the + * encoding format is same with IO_PGTABLE_QUIRK_ARM_MTK_EXT. * * IO_PGTABLE_QUIRK_ARM_TTBR1: (ARM LPAE format) Configure the table * for use in the upper half of a split address space. + * + * IO_PGTABLE_QUIRK_ARM_OUTER_WBWA: Override the outer-cacheability + * attributes set in the TCR for a non-coherent page-table walker. */ - #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) + #define IO_PGTABLE_QUIRK_ARM_NS BIT(0) + #define IO_PGTABLE_QUIRK_NO_PERMS BIT(1) + #define IO_PGTABLE_QUIRK_ARM_MTK_EXT BIT(3) + #define IO_PGTABLE_QUIRK_ARM_MTK_TTBR_EXT BIT(4) + #define IO_PGTABLE_QUIRK_ARM_TTBR1 BIT(5) + #define IO_PGTABLE_QUIRK_ARM_OUTER_WBWA BIT(6) unsigned long quirks; unsigned long pgsize_bitmap; unsigned int ias; @@ -140,6 +139,11 @@ struct io_pgtable_cfg { u64 transtab; u64 memattr; } arm_mali_lpae_cfg; + + struct { + u64 ttbr[4]; + u32 n_ttbrs; + } apple_dart_cfg; }; }; @@ -147,7 +151,9 @@ struct io_pgtable_cfg { * struct io_pgtable_ops - Page table manipulation API for IOMMU drivers. * * @map: Map a physically contiguous memory region. + * @map_pages: Map a physically contiguous range of pages of the same size. * @unmap: Unmap a physically contiguous memory region. + * @unmap_pages: Unmap a range of virtually contiguous pages of the same size. * @iova_to_phys: Translate iova to physical address. * * These functions map directly onto the iommu_ops member functions with @@ -155,9 +161,15 @@ struct io_pgtable_cfg { */ struct io_pgtable_ops { int (*map)(struct io_pgtable_ops *ops, unsigned long iova, - phys_addr_t paddr, size_t size, int prot); + phys_addr_t paddr, size_t size, int prot, gfp_t gfp); + int (*map_pages)(struct io_pgtable_ops *ops, unsigned long iova, + phys_addr_t paddr, size_t pgsize, size_t pgcount, + int prot, gfp_t gfp, size_t *mapped); size_t (*unmap)(struct io_pgtable_ops *ops, unsigned long iova, size_t size, struct iommu_iotlb_gather *gather); + size_t (*unmap_pages)(struct io_pgtable_ops *ops, unsigned long iova, + size_t pgsize, size_t pgcount, + struct iommu_iotlb_gather *gather); phys_addr_t (*iova_to_phys)(struct io_pgtable_ops *ops, unsigned long iova); }; @@ -210,21 +222,16 @@ struct io_pgtable { static inline void io_pgtable_tlb_flush_all(struct io_pgtable *iop) { - iop->cfg.tlb->tlb_flush_all(iop->cookie); + if (iop->cfg.tlb && iop->cfg.tlb->tlb_flush_all) + iop->cfg.tlb->tlb_flush_all(iop->cookie); } static inline void io_pgtable_tlb_flush_walk(struct io_pgtable *iop, unsigned long iova, size_t size, size_t granule) { - iop->cfg.tlb->tlb_flush_walk(iova, size, granule, iop->cookie); -} - -static inline void -io_pgtable_tlb_flush_leaf(struct io_pgtable *iop, unsigned long iova, - size_t size, size_t granule) -{ - iop->cfg.tlb->tlb_flush_leaf(iova, size, granule, iop->cookie); + if (iop->cfg.tlb && iop->cfg.tlb->tlb_flush_walk) + iop->cfg.tlb->tlb_flush_walk(iova, size, granule, iop->cookie); } static inline void @@ -232,7 +239,7 @@ io_pgtable_tlb_add_page(struct io_pgtable *iop, struct iommu_iotlb_gather * gather, unsigned long iova, size_t granule) { - if (iop->cfg.tlb->tlb_add_page) + if (iop->cfg.tlb && iop->cfg.tlb->tlb_add_page) iop->cfg.tlb->tlb_add_page(gather, iova, granule, iop->cookie); } @@ -254,5 +261,8 @@ extern struct io_pgtable_init_fns io_pgtable_arm_64_lpae_s1_init_fns; extern struct io_pgtable_init_fns io_pgtable_arm_64_lpae_s2_init_fns; extern struct io_pgtable_init_fns io_pgtable_arm_v7s_init_fns; extern struct io_pgtable_init_fns io_pgtable_arm_mali_lpae_init_fns; +extern struct io_pgtable_init_fns io_pgtable_amd_iommu_v1_init_fns; +extern struct io_pgtable_init_fns io_pgtable_amd_iommu_v2_init_fns; +extern struct io_pgtable_init_fns io_pgtable_apple_dart_init_fns; #endif /* __IO_PGTABLE_H */ |