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-rw-r--r--drivers/pci/intel-iommu.c33
-rw-r--r--include/linux/dma_remapping.h34
2 files changed, 34 insertions, 33 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 6fadbb9bc180..29bf2d8176e2 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -57,6 +57,39 @@
57#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK) 57#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK)
58#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK) 58#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK)
59 59
60/*
61 * 0: Present
62 * 1-11: Reserved
63 * 12-63: Context Ptr (12 - (haw-1))
64 * 64-127: Reserved
65 */
66struct root_entry {
67 u64 val;
68 u64 rsvd1;
69};
70#define ROOT_ENTRY_NR (VTD_PAGE_SIZE/sizeof(struct root_entry))
71static inline bool root_present(struct root_entry *root)
72{
73 return (root->val & 1);
74}
75static inline void set_root_present(struct root_entry *root)
76{
77 root->val |= 1;
78}
79static inline void set_root_value(struct root_entry *root, unsigned long value)
80{
81 root->val |= value & VTD_PAGE_MASK;
82}
83
84static inline struct context_entry *
85get_context_addr_from_root(struct root_entry *root)
86{
87 return (struct context_entry *)
88 (root_present(root)?phys_to_virt(
89 root->val & VTD_PAGE_MASK) :
90 NULL);
91}
92
60static void flush_unmaps_timeout(unsigned long data); 93static void flush_unmaps_timeout(unsigned long data);
61 94
62DEFINE_TIMER(unmap_timer, flush_unmaps_timeout, 0, 0); 95DEFINE_TIMER(unmap_timer, flush_unmaps_timeout, 0, 0);
diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h
index 2e5a5c0b6acd..d8521662a495 100644
--- a/include/linux/dma_remapping.h
+++ b/include/linux/dma_remapping.h
@@ -9,39 +9,7 @@
9#define VTD_PAGE_MASK (((u64)-1) << VTD_PAGE_SHIFT) 9#define VTD_PAGE_MASK (((u64)-1) << VTD_PAGE_SHIFT)
10#define VTD_PAGE_ALIGN(addr) (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK) 10#define VTD_PAGE_ALIGN(addr) (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK)
11 11
12/* 12struct root_entry;
13 * 0: Present
14 * 1-11: Reserved
15 * 12-63: Context Ptr (12 - (haw-1))
16 * 64-127: Reserved
17 */
18struct root_entry {
19 u64 val;
20 u64 rsvd1;
21};
22#define ROOT_ENTRY_NR (VTD_PAGE_SIZE/sizeof(struct root_entry))
23static inline bool root_present(struct root_entry *root)
24{
25 return (root->val & 1);
26}
27static inline void set_root_present(struct root_entry *root)
28{
29 root->val |= 1;
30}
31static inline void set_root_value(struct root_entry *root, unsigned long value)
32{
33 root->val |= value & VTD_PAGE_MASK;
34}
35
36struct context_entry;
37static inline struct context_entry *
38get_context_addr_from_root(struct root_entry *root)
39{
40 return (struct context_entry *)
41 (root_present(root)?phys_to_virt(
42 root->val & VTD_PAGE_MASK) :
43 NULL);
44}
45 13
46/* 14/*
47 * low 64 bits: 15 * low 64 bits: