Commit | Line | Data |
---|---|---|
ff7d37a5 SV |
1 | #ifndef _LINUX_IOMMU_COMMON_H |
2 | #define _LINUX_IOMMU_COMMON_H | |
3 | ||
4 | #include <linux/spinlock_types.h> | |
5 | #include <linux/device.h> | |
6 | #include <asm/page.h> | |
7 | ||
8 | #define IOMMU_POOL_HASHBITS 4 | |
9 | #define IOMMU_NR_POOLS (1 << IOMMU_POOL_HASHBITS) | |
10 | ||
11 | struct iommu_pool { | |
12 | unsigned long start; | |
13 | unsigned long end; | |
14 | unsigned long hint; | |
15 | spinlock_t lock; | |
16 | }; | |
17 | ||
18 | struct iommu_map_table { | |
19 | unsigned long table_map_base; | |
20 | unsigned long table_shift; | |
21 | unsigned long nr_pools; | |
22 | void (*lazy_flush)(struct iommu_map_table *); | |
23 | unsigned long poolsize; | |
24 | struct iommu_pool pools[IOMMU_NR_POOLS]; | |
25 | u32 flags; | |
26 | #define IOMMU_HAS_LARGE_POOL 0x00000001 | |
27 | #define IOMMU_NO_SPAN_BOUND 0x00000002 | |
28 | #define IOMMU_NEED_FLUSH 0x00000004 | |
29 | struct iommu_pool large_pool; | |
30 | unsigned long *map; | |
31 | }; | |
32 | ||
33 | extern void iommu_tbl_pool_init(struct iommu_map_table *iommu, | |
34 | unsigned long num_entries, | |
35 | u32 table_shift, | |
36 | void (*lazy_flush)(struct iommu_map_table *), | |
37 | bool large_pool, u32 npools, | |
38 | bool skip_span_boundary_check); | |
39 | ||
40 | extern unsigned long iommu_tbl_range_alloc(struct device *dev, | |
41 | struct iommu_map_table *iommu, | |
42 | unsigned long npages, | |
43 | unsigned long *handle, | |
44 | unsigned long mask, | |
45 | unsigned int align_order); | |
46 | ||
47 | extern void iommu_tbl_range_free(struct iommu_map_table *iommu, | |
48 | u64 dma_addr, unsigned long npages, | |
49 | unsigned long entry); | |
50 | ||
51 | #endif |