5113f6f70
 김현기
kernel add
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
#ifndef _LINUX_IOMMU_COMMON_H
#define _LINUX_IOMMU_COMMON_H
#include <linux/spinlock_types.h>
#include <linux/device.h>
#include <asm/page.h>
#define IOMMU_POOL_HASHBITS 4
#define IOMMU_NR_POOLS (1 << IOMMU_POOL_HASHBITS)
#define IOMMU_ERROR_CODE (~(unsigned long) 0)
struct iommu_pool {
unsigned long start;
unsigned long end;
unsigned long hint;
spinlock_t lock;
};
struct iommu_map_table {
unsigned long table_map_base;
unsigned long table_shift;
unsigned long nr_pools;
void (*lazy_flush)(struct iommu_map_table *);
unsigned long poolsize;
struct iommu_pool pools[IOMMU_NR_POOLS];
u32 flags;
#define IOMMU_HAS_LARGE_POOL 0x00000001
#define IOMMU_NO_SPAN_BOUND 0x00000002
#define IOMMU_NEED_FLUSH 0x00000004
struct iommu_pool large_pool;
unsigned long *map;
};
extern void iommu_tbl_pool_init(struct iommu_map_table *iommu,
unsigned long num_entries,
u32 table_shift,
void (*lazy_flush)(struct iommu_map_table *),
bool large_pool, u32 npools,
bool skip_span_boundary_check);
extern unsigned long iommu_tbl_range_alloc(struct device *dev,
struct iommu_map_table *iommu,
unsigned long npages,
unsigned long *handle,
unsigned long mask,
unsigned int align_order);
extern void iommu_tbl_range_free(struct iommu_map_table *iommu,
u64 dma_addr, unsigned long npages,
unsigned long entry);
#endif
|