1 | /* SPDX-License-Identifier: GPL-2.0 OR MIT */ |
2 | /* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */ |
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(kref: &vm->refcount); |
52 | return vm; |
53 | } |
54 | |
55 | static inline void lima_vm_put(struct lima_vm *vm) |
56 | { |
57 | if (vm) |
58 | kref_put(kref: &vm->refcount, release: lima_vm_release); |
59 | } |
60 | |
61 | void lima_vm_print(struct lima_vm *vm); |
62 | int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff); |
63 | |
64 | #endif |
65 | |