diff options
Diffstat (limited to 'include/linux/intel-iommu.h')
| -rw-r--r-- | include/linux/intel-iommu.h | 66 |
1 files changed, 51 insertions, 15 deletions
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 2e117f30a76..3d017cfd245 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -29,6 +29,7 @@ #include <linux/io.h> #include <linux/dma_remapping.h> #include <asm/cacheflush.h> +#include <asm/iommu.h> /* * Intel IOMMU register specification per version 1.0 public spec. @@ -127,6 +128,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val) /* IOTLB_REG */ +#define DMA_TLB_FLUSH_GRANU_OFFSET 60 #define DMA_TLB_GLOBAL_FLUSH (((u64)1) << 60) #define DMA_TLB_DSI_FLUSH (((u64)2) << 60) #define DMA_TLB_PSI_FLUSH (((u64)3) << 60) @@ -140,6 +142,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val) #define DMA_TLB_MAX_SIZE (0x3f) /* INVALID_DESC */ +#define DMA_CCMD_INVL_GRANU_OFFSET 61 #define DMA_ID_TLB_GLOBAL_FLUSH (((u64)1) << 3) #define DMA_ID_TLB_DSI_FLUSH (((u64)2) << 3) #define DMA_ID_TLB_PSI_FLUSH (((u64)3) << 3) @@ -200,22 +203,21 @@ static inline void dmar_writeq(void __iomem *addr, u64 val) #define dma_frcd_type(d) ((d >> 30) & 1) #define dma_frcd_fault_reason(c) (c & 0xff) #define dma_frcd_source_id(c) (c & 0xffff) -#define dma_frcd_page_addr(d) (d & (((u64)-1) << 12)) /* low 64 bit */ - -#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) /* 10sec */ - -#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \ -{\ - cycles_t start_time = get_cycles();\ - while (1) {\ - sts = op (iommu->reg + offset);\ - if (cond)\ - break;\ +/* low 64 bit */ +#define dma_frcd_page_addr(d) (d & (((u64)-1) << PAGE_SHIFT)) + +#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \ +do { \ + cycles_t start_time = get_cycles(); \ + while (1) { \ + sts = op(iommu->reg + offset); \ + if (cond) \ + break; \ if (DMAR_OPERATION_TIMEOUT < (get_cycles() - start_time))\ - panic("DMAR hardware is malfunctioning\n");\ - cpu_relax();\ - }\ -} + panic("DMAR hardware is malfunctioning\n"); \ + cpu_relax(); \ + } \ +} while (0) #define QI_LENGTH 256 /* queue length */ @@ -238,6 +240,19 @@ enum { #define QI_IWD_STATUS_DATA(d) (((u64)d) << 32) #define QI_IWD_STATUS_WRITE (((u64)1) << 5) +#define QI_IOTLB_DID(did) (((u64)did) << 16) +#define QI_IOTLB_DR(dr) (((u64)dr) << 7) +#define QI_IOTLB_DW(dw) (((u64)dw) << 6) +#define QI_IOTLB_GRAN(gran) (((u64)gran) >> (DMA_TLB_FLUSH_GRANU_OFFSET-4)) +#define QI_IOTLB_ADDR(addr) (((u64)addr) & VTD_PAGE_MASK) +#define QI_IOTLB_IH(ih) (((u64)ih) << 6) +#define QI_IOTLB_AM(am) (((u8)am)) + +#define QI_CC_FM(fm) (((u64)fm) << 48) +#define QI_CC_SID(sid) (((u64)sid) << 32) +#define QI_CC_DID(did) (((u64)did) << 16) +#define QI_CC_GRAN(gran) (((u64)gran) >> (DMA_CCMD_INVL_GRANU_OFFSET-4)) + struct qi_desc { u64 low, high; }; @@ -263,6 +278,13 @@ struct ir_table { }; #endif +struct iommu_flush { + int (*flush_context)(struct intel_iommu *iommu, u16 did, u16 sid, u8 fm, + u64 type, int non_present_entry_flush); + int (*flush_iotlb)(struct intel_iommu *iommu, u16 did, u64 addr, + unsigned int size_order, u64 type, int non_present_entry_flush); +}; + struct intel_iommu { void __iomem *reg; /* Pointer to hardware regs, virtual addr */ u64 cap; @@ -282,6 +304,7 @@ struct intel_iommu { unsigned char name[7]; /* Device Name */ struct msi_msg saved_msg; struct sys_device sysdev; + struct iommu_flush flush; #endif struct q_inval *qi; /* Queued invalidation info */ #ifdef CONFIG_INTR_REMAP @@ -303,6 +326,12 @@ extern void free_iommu(struct intel_iommu *iommu); extern int dmar_enable_qi(struct intel_iommu *iommu); extern void qi_global_iec(struct intel_iommu *iommu); +extern int qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid, + u8 fm, u64 type, int non_present_entry_flush); +extern int qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr, + unsigned int size_order, u64 type, + int non_present_entry_flush); + extern void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu); void intel_iommu_domain_exit(struct dmar_domain *domain); @@ -324,4 +353,11 @@ static inline int intel_iommu_found(void) } #endif /* CONFIG_DMAR */ +extern void *intel_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t); +extern void intel_free_coherent(struct device *, size_t, void *, dma_addr_t); +extern dma_addr_t intel_map_single(struct device *, phys_addr_t, size_t, int); +extern void intel_unmap_single(struct device *, dma_addr_t, size_t, int); +extern int intel_map_sg(struct device *, struct scatterlist *, int, int); +extern void intel_unmap_sg(struct device *, struct scatterlist *, int, int); + #endif |