Merge branch 'linus' into cont_syslog

[safe/jmp/linux-2.6] / include / linux / dma_remapping.h

diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h
index 9a88f7d..5619f85 100644 (file)
--- a/include/linux/dma_remapping.h
+++ b/include/linux/dma_remapping.h
@@ -9,72 +9,34 @@
 #define VTD_PAGE_MASK          (((u64)-1) << VTD_PAGE_SHIFT)
 #define VTD_PAGE_ALIGN(addr)   (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK)
 
-struct root_entry;
-
-/*
- * 0: readable
- * 1: writable
- * 2-6: reserved
- * 7: super page
- * 8-11: available
- * 12-63: Host physcial address
- */
-struct dma_pte {
-       u64 val;
-};
-#define dma_clear_pte(p)       do {(p).val = 0;} while (0)
-
 #define DMA_PTE_READ (1)
 #define DMA_PTE_WRITE (2)
+#define DMA_PTE_SNP (1 << 11)
 
-#define dma_set_pte_readable(p) do {(p).val |= DMA_PTE_READ;} while (0)
-#define dma_set_pte_writable(p) do {(p).val |= DMA_PTE_WRITE;} while (0)
-#define dma_set_pte_prot(p, prot) \
-               do {(p).val = ((p).val & ~3) | ((prot) & 3); } while (0)
-#define dma_pte_addr(p) ((p).val & VTD_PAGE_MASK)
-#define dma_set_pte_addr(p, addr) do {\
-               (p).val |= ((addr) & VTD_PAGE_MASK); } while (0)
-#define dma_pte_present(p) (((p).val & 3) != 0)
+#define CONTEXT_TT_MULTI_LEVEL 0
+#define CONTEXT_TT_DEV_IOTLB   1
+#define CONTEXT_TT_PASS_THROUGH 2
 
 struct intel_iommu;
-
-struct dmar_domain {
-       int     id;                     /* domain id */
-       struct intel_iommu *iommu;      /* back pointer to owning iommu */
-
-       struct list_head devices;       /* all devices' list */
-       struct iova_domain iovad;       /* iova's that belong to this domain */
-
-       struct dma_pte  *pgd;           /* virtual address */
-       spinlock_t      mapping_lock;   /* page table lock */
-       int             gaw;            /* max guest address width */
-
-       /* adjusted guest address width, 0 is level 2 30-bit */
-       int             agaw;
-
-#define DOMAIN_FLAG_MULTIPLE_DEVICES 1
-       int             flags;
-};
-
-/* PCI domain-device relationship */
-struct device_domain_info {
-       struct list_head link;  /* link to domain siblings */
-       struct list_head global; /* link to global list */
-       u8 bus;                 /* PCI bus numer */
-       u8 devfn;               /* PCI devfn number */
-       struct pci_dev *dev; /* it's NULL for PCIE-to-PCI bridge */
-       struct dmar_domain *domain; /* pointer to domain */
-};
+struct dmar_domain;
+struct root_entry;
 
 extern void free_dmar_iommu(struct intel_iommu *iommu);
 
-extern int dmar_disabled;
-
-#ifndef CONFIG_DMAR_GFX_WA
-static inline void iommu_prepare_gfx_mapping(void)
+#ifdef CONFIG_DMAR
+extern int iommu_calculate_agaw(struct intel_iommu *iommu);
+extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu);
+#else
+static inline int iommu_calculate_agaw(struct intel_iommu *iommu)
 {
-       return;
+       return 0;
 }
-#endif /* !CONFIG_DMAR_GFX_WA */
+static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu)
+{
+       return 0;
+}
+#endif
+
+extern int dmar_disabled;
 
 #endif