This source file includes following definitions.
- lima_vm_get
- lima_vm_put
1
2
3
4 #ifndef __LIMA_VM_H__
5 #define __LIMA_VM_H__
6
7 #include <drm/drm_mm.h>
8 #include <linux/kref.h>
9
10 #define LIMA_PAGE_SIZE 4096
11 #define LIMA_PAGE_MASK (LIMA_PAGE_SIZE - 1)
12 #define LIMA_PAGE_ENT_NUM (LIMA_PAGE_SIZE / sizeof(u32))
13
14 #define LIMA_VM_NUM_PT_PER_BT_SHIFT 3
15 #define LIMA_VM_NUM_PT_PER_BT (1 << LIMA_VM_NUM_PT_PER_BT_SHIFT)
16 #define LIMA_VM_NUM_BT (LIMA_PAGE_ENT_NUM >> LIMA_VM_NUM_PT_PER_BT_SHIFT)
17
18 #define LIMA_VA_RESERVE_START 0x0FFF00000ULL
19 #define LIMA_VA_RESERVE_DLBU LIMA_VA_RESERVE_START
20 #define LIMA_VA_RESERVE_END 0x100000000ULL
21
22 struct lima_device;
23
24 struct lima_vm_page {
25 u32 *cpu;
26 dma_addr_t dma;
27 };
28
29 struct lima_vm {
30 struct mutex lock;
31 struct kref refcount;
32
33 struct drm_mm mm;
34
35 struct lima_device *dev;
36
37 struct lima_vm_page pd;
38 struct lima_vm_page bts[LIMA_VM_NUM_BT];
39 };
40
41 int lima_vm_bo_add(struct lima_vm *vm, struct lima_bo *bo, bool create);
42 void lima_vm_bo_del(struct lima_vm *vm, struct lima_bo *bo);
43
44 u32 lima_vm_get_va(struct lima_vm *vm, struct lima_bo *bo);
45
46 struct lima_vm *lima_vm_create(struct lima_device *dev);
47 void lima_vm_release(struct kref *kref);
48
49 static inline struct lima_vm *lima_vm_get(struct lima_vm *vm)
50 {
51 kref_get(&vm->refcount);
52 return vm;
53 }
54
55 static inline void lima_vm_put(struct lima_vm *vm)
56 {
57 kref_put(&vm->refcount, lima_vm_release);
58 }
59
60 void lima_vm_print(struct lima_vm *vm);
61
62 #endif