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
38struct nouveau_vm_pgt {
39 struct nouveau_gpuobj *obj[2];
40 u32 refcount[2];
41};
42
43struct nouveau_vm_pgd {
44 struct list_head head;
45 struct nouveau_gpuobj *obj;
46};
47
48struct nouveau_gpuobj;
49struct nouveau_mem;
50
51struct 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
60struct 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
73struct 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
96static inline struct nouveau_vmmgr *
97nouveau_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
115extern struct nouveau_oclass nv04_vmmgr_oclass;
116extern struct nouveau_oclass nv41_vmmgr_oclass;
117extern struct nouveau_oclass nv44_vmmgr_oclass;
118extern struct nouveau_oclass nv50_vmmgr_oclass;
119extern struct nouveau_oclass nvc0_vmmgr_oclass;
120
121int nv04_vm_create(struct nouveau_vmmgr *, u64, u64, u64,
122 struct nouveau_vm **);
123void nv04_vmmgr_dtor(struct nouveau_object *);
124
125/* nouveau_vm.c */
126int nouveau_vm_create(struct nouveau_vmmgr *, u64 offset, u64 length,
127 u64 mm_offset, u32 block, struct nouveau_vm **);
128int nouveau_vm_new(struct nouveau_device *, u64 offset, u64 length,
129 u64 mm_offset, struct nouveau_vm **);
130int nouveau_vm_ref(struct nouveau_vm *, struct nouveau_vm **,
131 struct nouveau_gpuobj *pgd);
132int nouveau_vm_get(struct nouveau_vm *, u64 size, u32 page_shift,
133 u32 access, struct nouveau_vma *);
134void nouveau_vm_put(struct nouveau_vma *);
135void nouveau_vm_map(struct nouveau_vma *, struct nouveau_mem *);
136void nouveau_vm_map_at(struct nouveau_vma *, u64 offset, struct nouveau_mem *);
137void nouveau_vm_unmap(struct nouveau_vma *);
138void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length);
139
140#endif
141