1 #ifndef _LINUX_IOMMU_COMMON_H
2 #define _LINUX_IOMMU_COMMON_H
4 #include <linux/spinlock_types.h>
5 #include <linux/device.h>
8 #define IOMMU_POOL_HASHBITS 4
9 #define IOMMU_NR_POOLS (1 << IOMMU_POOL_HASHBITS)
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
];
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
;
33 extern void iommu_tbl_pool_init(struct iommu_map_table
*iommu
,
34 unsigned long num_entries
,
36 void (*lazy_flush
)(struct iommu_map_table
*),
37 bool large_pool
, u32 npools
,
38 bool skip_span_boundary_check
);
40 extern unsigned long iommu_tbl_range_alloc(struct device
*dev
,
41 struct iommu_map_table
*iommu
,
43 unsigned long *handle
,
45 unsigned int align_order
);
47 extern void iommu_tbl_range_free(struct iommu_map_table
*iommu
,
48 u64 dma_addr
, unsigned long npages
,
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