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vm.h
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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 struct nouveau_vm_pgt {
34  struct nouveau_gpuobj *obj[2];
35  u32 refcount[2];
36 };
37 
38 struct nouveau_vm_pgd {
39  struct list_head head;
40  struct nouveau_gpuobj *obj;
41 };
42 
43 struct nouveau_gpuobj;
44 struct nouveau_mem;
45 
46 struct nouveau_vma {
47  struct list_head head;
48  int refcount;
49  struct nouveau_vm *vm;
50  struct nouveau_mm_node *node;
51  u64 offset;
52  u32 access;
53 };
54 
55 struct nouveau_vm {
56  struct nouveau_vmmgr *vmm;
57  struct nouveau_mm mm;
58  int refcount;
59 
60  struct list_head pgd_list;
61  atomic_t engref[64]; //NVDEV_SUBDEV_NR];
62 
63  struct nouveau_vm_pgt *pgt;
64  u32 fpde;
65  u32 lpde;
66 };
67 
68 struct nouveau_vmmgr {
69  struct nouveau_subdev base;
70 
71  u64 limit;
72  u8 dma_bits;
73  u32 pgt_bits;
74  u8 spg_shift;
75  u8 lpg_shift;
76 
77  int (*create)(struct nouveau_vmmgr *, u64 offset, u64 length,
78  u64 mm_offset, struct nouveau_vm **);
79 
80  void (*map_pgt)(struct nouveau_gpuobj *pgd, u32 pde,
81  struct nouveau_gpuobj *pgt[2]);
82  void (*map)(struct nouveau_vma *, struct nouveau_gpuobj *,
83  struct nouveau_mem *, u32 pte, u32 cnt,
84  u64 phys, u64 delta);
85  void (*map_sg)(struct nouveau_vma *, struct nouveau_gpuobj *,
86  struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *);
87  void (*unmap)(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt);
88  void (*flush)(struct nouveau_vm *);
89 };
90 
91 static inline struct nouveau_vmmgr *
92 nouveau_vmmgr(void *obj)
93 {
94  return (void *)nv_device(obj)->subdev[NVDEV_SUBDEV_VM];
95 }
96 
97 #define nouveau_vmmgr_create(p,e,o,i,f,d) \
98  nouveau_subdev_create((p), (e), (o), 0, (i), (f), (d))
99 #define nouveau_vmmgr_destroy(p) \
100  nouveau_subdev_destroy(&(p)->base)
101 #define nouveau_vmmgr_init(p) \
102  nouveau_subdev_init(&(p)->base)
103 #define nouveau_vmmgr_fini(p,s) \
104  nouveau_subdev_fini(&(p)->base, (s))
105 
106 #define _nouveau_vmmgr_dtor _nouveau_subdev_dtor
107 #define _nouveau_vmmgr_init _nouveau_subdev_init
108 #define _nouveau_vmmgr_fini _nouveau_subdev_fini
109 
110 extern struct nouveau_oclass nv04_vmmgr_oclass;
111 extern struct nouveau_oclass nv41_vmmgr_oclass;
112 extern struct nouveau_oclass nv44_vmmgr_oclass;
113 extern struct nouveau_oclass nv50_vmmgr_oclass;
114 extern struct nouveau_oclass nvc0_vmmgr_oclass;
115 
116 int nv04_vm_create(struct nouveau_vmmgr *, u64, u64, u64,
117  struct nouveau_vm **);
118 void nv04_vmmgr_dtor(struct nouveau_object *);
119 
120 void nv50_vm_flush_engine(struct nouveau_subdev *, int engine);
121 void nvc0_vm_flush_engine(struct nouveau_subdev *, u64 addr, int type);
122 
123 /* nouveau_vm.c */
124 int nouveau_vm_create(struct nouveau_vmmgr *, u64 offset, u64 length,
125  u64 mm_offset, u32 block, struct nouveau_vm **);
126 int nouveau_vm_new(struct nouveau_device *, u64 offset, u64 length,
127  u64 mm_offset, struct nouveau_vm **);
128 int nouveau_vm_ref(struct nouveau_vm *, struct nouveau_vm **,
129  struct nouveau_gpuobj *pgd);
130 int nouveau_vm_get(struct nouveau_vm *, u64 size, u32 page_shift,
131  u32 access, struct nouveau_vma *);
132 void nouveau_vm_put(struct nouveau_vma *);
133 void nouveau_vm_map(struct nouveau_vma *, struct nouveau_mem *);
134 void nouveau_vm_map_at(struct nouveau_vma *, u64 offset, struct nouveau_mem *);
135 void nouveau_vm_unmap(struct nouveau_vma *);
136 void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length);
137 void nouveau_vm_map_sg(struct nouveau_vma *, u64 offset, u64 length,
138  struct nouveau_mem *);
139 void nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
140  struct nouveau_mem *mem);
141 
142 #endif
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