diff options
Diffstat (limited to 'drivers/pci/intel-iommu.h')
| -rw-r--r-- | drivers/pci/intel-iommu.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/pci/intel-iommu.h b/drivers/pci/intel-iommu.h index 459ad1f..07f5f63 100644 --- a/drivers/pci/intel-iommu.h +++ b/drivers/pci/intel-iommu.h @@ -23,10 +23,24 @@ #include <linux/types.h> #include <linux/msi.h> +#include <linux/sysdev.h> #include "iova.h" #include <linux/io.h> /* + * We need a fixed PAGE_SIZE of 4K irrespective of + * arch PAGE_SIZE for IOMMU page tables. + */ +#define PAGE_SHIFT_4K (12) +#define PAGE_SIZE_4K (1UL << PAGE_SHIFT_4K) +#define PAGE_MASK_4K (((u64)-1) << PAGE_SHIFT_4K) +#define PAGE_ALIGN_4K(addr) (((addr) + PAGE_SIZE_4K - 1) & PAGE_MASK_4K) + +#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT_4K) +#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK) +#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK) + +/* * Intel IOMMU register specification per version 1.0 public spec. */ @@ -126,6 +140,10 @@ static inline void dmar_writeq(void __iomem *addr, u64 val) #define DMA_TLB_IH_NONLEAF (((u64)1) << 6) #define DMA_TLB_MAX_SIZE (0x3f) +/* PMEN_REG */ +#define DMA_PMEN_EPM (((u32)1)<<31) +#define DMA_PMEN_PRS (((u32)1)<<0) + /* GCMD_REG */ #define DMA_GCMD_TE (((u32)1) << 31) #define DMA_GCMD_SRTP (((u32)1) << 30) |
