1 | /* |
2 | * Copyright 2010 Red Hat Inc. |
3 | * |
4 | * Permission is hereby granted, free of charge, to any person obtaining a |
5 | * copy of this software and associated documentation files (the "Software"), |
6 | * to deal in the Software without restriction, including without limitation |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
8 | * and/or sell copies of the Software, and to permit persons to whom the |
9 | * Software is furnished to do so, subject to the following conditions: |
10 | * |
11 | * The above copyright notice and this permission notice shall be included in |
12 | * all copies or substantial portions of the Software. |
13 | * |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
20 | * OTHER DEALINGS IN THE SOFTWARE. |
21 | * |
22 | * Authors: Ben Skeggs |
23 | */ |
24 | |
25 | #ifndef __NOUVEAU_VM_H__ |
26 | #define __NOUVEAU_VM_H__ |
27 | |
28 | #include <core/object.h> |
29 | #include <core/subdev.h> |
30 | #include <core/device.h> |
31 | #include <core/mm.h> |
32 | |
33 | #define NOUVEAU_GPU_PAGE_SIZE 4096 |
34 | #define NOUVEAU_GPU_PAGE_MASK (NOUVEAU_GPU_PAGE_SIZE - 1) |
35 | #define NOUVEAU_GPU_PAGE_SHIFT 12 |
36 | #define NOUVEAU_GPU_PAGE_ALIGN(a) (((a) + NOUVEAU_GPU_PAGE_MASK) & ~NOUVEAU_GPU_PAGE_MASK) |
37 | |
38 | struct nouveau_vm_pgt { |
39 | struct nouveau_gpuobj *obj[2]; |
40 | u32 refcount[2]; |
41 | }; |
42 | |
43 | struct nouveau_vm_pgd { |
44 | struct list_head head; |
45 | struct nouveau_gpuobj *obj; |
46 | }; |
47 | |
48 | struct nouveau_gpuobj; |
49 | struct nouveau_mem; |
50 | |
51 | struct nouveau_vma { |
52 | struct list_head head; |
53 | int refcount; |
54 | struct nouveau_vm *vm; |
55 | struct nouveau_mm_node *node; |
56 | u64 offset; |
57 | u32 access; |
58 | }; |
59 | |
60 | struct nouveau_vm { |
61 | struct nouveau_vmmgr *vmm; |
62 | struct nouveau_mm mm; |
63 | struct kref refcount; |
64 | |
65 | struct list_head pgd_list; |
66 | atomic_t engref[NVDEV_SUBDEV_NR]; |
67 | |
68 | struct nouveau_vm_pgt *pgt; |
69 | u32 fpde; |
70 | u32 lpde; |
71 | }; |
72 | |
73 | struct nouveau_vmmgr { |
74 | struct nouveau_subdev base; |
75 | |
76 | u64 limit; |
77 | u8 dma_bits; |
78 | u32 pgt_bits; |
79 | u8 spg_shift; |
80 | u8 lpg_shift; |
81 | |
82 | int (*create)(struct nouveau_vmmgr *, u64 offset, u64 length, |
83 | u64 mm_offset, struct nouveau_vm **); |
84 | |
85 | void (*map_pgt)(struct nouveau_gpuobj *pgd, u32 pde, |
86 | struct nouveau_gpuobj *pgt[2]); |
87 | void (*map)(struct nouveau_vma *, struct nouveau_gpuobj *, |
88 | struct nouveau_mem *, u32 pte, u32 cnt, |
89 | u64 phys, u64 delta); |
90 | void (*map_sg)(struct nouveau_vma *, struct nouveau_gpuobj *, |
91 | struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *); |
92 | void (*unmap)(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt); |
93 | void (*flush)(struct nouveau_vm *); |
94 | }; |
95 | |
96 | static inline struct nouveau_vmmgr * |
97 | nouveau_vmmgr(void *obj) |
98 | { |
99 | return (void *)nv_device(obj)->subdev[NVDEV_SUBDEV_VM]; |
100 | } |
101 | |
102 | #define nouveau_vmmgr_create(p,e,o,i,f,d) \ |
103 | nouveau_subdev_create((p), (e), (o), 0, (i), (f), (d)) |
104 | #define nouveau_vmmgr_destroy(p) \ |
105 | nouveau_subdev_destroy(&(p)->base) |
106 | #define nouveau_vmmgr_init(p) \ |
107 | nouveau_subdev_init(&(p)->base) |
108 | #define nouveau_vmmgr_fini(p,s) \ |
109 | nouveau_subdev_fini(&(p)->base, (s)) |
110 | |
111 | #define _nouveau_vmmgr_dtor _nouveau_subdev_dtor |
112 | #define _nouveau_vmmgr_init _nouveau_subdev_init |
113 | #define _nouveau_vmmgr_fini _nouveau_subdev_fini |
114 | |
115 | extern struct nouveau_oclass nv04_vmmgr_oclass; |
116 | extern struct nouveau_oclass nv41_vmmgr_oclass; |
117 | extern struct nouveau_oclass nv44_vmmgr_oclass; |
118 | extern struct nouveau_oclass nv50_vmmgr_oclass; |
119 | extern struct nouveau_oclass nvc0_vmmgr_oclass; |
120 | |
121 | int nv04_vm_create(struct nouveau_vmmgr *, u64, u64, u64, |
122 | struct nouveau_vm **); |
123 | void nv04_vmmgr_dtor(struct nouveau_object *); |
124 | |
125 | /* nouveau_vm.c */ |
126 | int nouveau_vm_create(struct nouveau_vmmgr *, u64 offset, u64 length, |
127 | u64 mm_offset, u32 block, struct nouveau_vm **); |
128 | int nouveau_vm_new(struct nouveau_device *, u64 offset, u64 length, |
129 | u64 mm_offset, struct nouveau_vm **); |
130 | int nouveau_vm_ref(struct nouveau_vm *, struct nouveau_vm **, |
131 | struct nouveau_gpuobj *pgd); |
132 | int nouveau_vm_get(struct nouveau_vm *, u64 size, u32 page_shift, |
133 | u32 access, struct nouveau_vma *); |
134 | void nouveau_vm_put(struct nouveau_vma *); |
135 | void nouveau_vm_map(struct nouveau_vma *, struct nouveau_mem *); |
136 | void nouveau_vm_map_at(struct nouveau_vma *, u64 offset, struct nouveau_mem *); |
137 | void nouveau_vm_unmap(struct nouveau_vma *); |
138 | void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length); |
139 | |
140 | #endif |
141 | |