summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h
blob: baab93398e54a51f84a1cac5fb71af629d52b2eb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NVKM_MMU_H__
#define __NVKM_MMU_H__
#include <core/subdev.h>

struct nvkm_vma {
	struct list_head head;
	struct rb_node tree;
	u64 addr;
	u64 size:50;
	bool mapref:1; /* PTs (de)referenced on (un)map (vs pre-allocated). */
	bool sparse:1; /* Unmapped PDEs/PTEs will not trigger MMU faults. */
#define NVKM_VMA_PAGE_NONE 7
	u8   page:3; /* Requested page type (index, or NONE for automatic). */
	u8   refd:3; /* Current page type (index, or NONE for unreferenced). */
	bool used:1; /* Region allocated. */
	bool part:1; /* Region was split from an allocated region by map(). */
	bool user:1; /* Region user-allocated. */
	bool busy:1; /* Region busy (for temporarily preventing user access). */
	struct nvkm_memory *memory; /* Memory currently mapped into VMA. */
	struct nvkm_tags *tags; /* Compression tag reference. */
};

struct nvkm_vmm {
	const struct nvkm_vmm_func *func;
	struct nvkm_mmu *mmu;
	const char *name;
	u32 debug;
	struct kref kref;
	struct mutex mutex;

	u64 start;
	u64 limit;

	struct nvkm_vmm_pt *pd;
	struct list_head join;

	struct list_head list;
	struct rb_root free;
	struct rb_root root;

	bool bootstrapped;
	atomic_t engref[NVKM_SUBDEV_NR];

	dma_addr_t null;
	void *nullp;
};

int nvkm_vmm_new(struct nvkm_device *, u64 addr, u64 size, void *argv, u32 argc,
		 struct lock_class_key *, const char *name, struct nvkm_vmm **);
struct nvkm_vmm *nvkm_vmm_ref(struct nvkm_vmm *);
void nvkm_vmm_unref(struct nvkm_vmm **);
int nvkm_vmm_boot(struct nvkm_vmm *);
int nvkm_vmm_join(struct nvkm_vmm *, struct nvkm_memory *inst);
void nvkm_vmm_part(struct nvkm_vmm *, struct nvkm_memory *inst);
int nvkm_vmm_get(struct nvkm_vmm *, u8 page, u64 size, struct nvkm_vma **);
void nvkm_vmm_put(struct nvkm_vmm *, struct nvkm_vma **);

struct nvkm_vmm_map {
	struct nvkm_memory *memory;
	u64 offset;

	struct nvkm_mm_node *mem;
	struct scatterlist *sgl;
	dma_addr_t *dma;
	u64 off;

	const struct nvkm_vmm_page *page;

	struct nvkm_tags *tags;
	u64 next;
	u64 type;
	u64 ctag;
};

int nvkm_vmm_map(struct nvkm_vmm *, struct nvkm_vma *, void *argv, u32 argc,
		 struct nvkm_vmm_map *);
void nvkm_vmm_unmap(struct nvkm_vmm *, struct nvkm_vma *);

struct nvkm_memory *nvkm_umem_search(struct nvkm_client *, u64);
struct nvkm_vmm *nvkm_uvmm_search(struct nvkm_client *, u64 handle);

struct nvkm_mmu {
	const struct nvkm_mmu_func *func;
	struct nvkm_subdev subdev;

	u8  dma_bits;

	int heap_nr;
	struct {
#define NVKM_MEM_VRAM                                                      0x01
#define NVKM_MEM_HOST                                                      0x02
#define NVKM_MEM_COMP                                                      0x04
#define NVKM_MEM_DISP                                                      0x08
		u8  type;
		u64 size;
	} heap[4];

	int type_nr;
	struct {
#define NVKM_MEM_KIND                                                      0x10
#define NVKM_MEM_MAPPABLE                                                  0x20
#define NVKM_MEM_COHERENT                                                  0x40
#define NVKM_MEM_UNCACHED                                                  0x80
		u8 type;
		u8 heap;
	} type[16];

	struct nvkm_vmm *vmm;

	struct {
		struct mutex mutex;
		struct list_head list;
	} ptc, ptp;

	struct nvkm_device_oclass user;
};

int nv04_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int nv41_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int nv44_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int nv50_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int g84_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int mcp77_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int gf100_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int gk104_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int gk20a_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int gm200_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int gm20b_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int gp100_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
int gp10b_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
#endif