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920d2b5e BS |
1 | /* |
2 | * Copyright 2017 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 | #include <nvif/vmm.h> | |
23 | #include <nvif/mem.h> | |
24 | ||
25 | #include <nvif/if000c.h> | |
26 | ||
27 | int | |
28 | nvif_vmm_unmap(struct nvif_vmm *vmm, u64 addr) | |
29 | { | |
30 | return nvif_object_mthd(&vmm->object, NVIF_VMM_V0_UNMAP, | |
31 | &(struct nvif_vmm_unmap_v0) { .addr = addr }, | |
32 | sizeof(struct nvif_vmm_unmap_v0)); | |
33 | } | |
34 | ||
35 | int | |
36 | nvif_vmm_map(struct nvif_vmm *vmm, u64 addr, u64 size, void *argv, u32 argc, | |
37 | struct nvif_mem *mem, u64 offset) | |
38 | { | |
39 | struct nvif_vmm_map_v0 *args; | |
9dfbd731 | 40 | u8 stack[48]; |
920d2b5e BS |
41 | int ret; |
42 | ||
43 | if (sizeof(*args) + argc > sizeof(stack)) { | |
44 | if (!(args = kmalloc(sizeof(*args) + argc, GFP_KERNEL))) | |
45 | return -ENOMEM; | |
46 | } else { | |
47 | args = (void *)stack; | |
48 | } | |
49 | ||
50 | args->version = 0; | |
51 | args->addr = addr; | |
52 | args->size = size; | |
53 | args->memory = nvif_handle(&mem->object); | |
54 | args->offset = offset; | |
55 | memcpy(args->data, argv, argc); | |
56 | ||
57 | ret = nvif_object_mthd(&vmm->object, NVIF_VMM_V0_MAP, | |
58 | args, sizeof(*args) + argc); | |
59 | if (args != (void *)stack) | |
60 | kfree(args); | |
61 | return ret; | |
62 | } | |
63 | ||
64 | void | |
65 | nvif_vmm_put(struct nvif_vmm *vmm, struct nvif_vma *vma) | |
66 | { | |
67 | if (vma->size) { | |
68 | WARN_ON(nvif_object_mthd(&vmm->object, NVIF_VMM_V0_PUT, | |
69 | &(struct nvif_vmm_put_v0) { | |
70 | .addr = vma->addr, | |
71 | }, sizeof(struct nvif_vmm_put_v0))); | |
72 | vma->size = 0; | |
73 | } | |
74 | } | |
75 | ||
76 | int | |
77 | nvif_vmm_get(struct nvif_vmm *vmm, enum nvif_vmm_get type, bool sparse, | |
78 | u8 page, u8 align, u64 size, struct nvif_vma *vma) | |
79 | { | |
80 | struct nvif_vmm_get_v0 args; | |
81 | int ret; | |
82 | ||
83 | args.version = vma->size = 0; | |
84 | args.sparse = sparse; | |
85 | args.page = page; | |
86 | args.align = align; | |
87 | args.size = size; | |
88 | ||
89 | switch (type) { | |
90 | case ADDR: args.type = NVIF_VMM_GET_V0_ADDR; break; | |
91 | case PTES: args.type = NVIF_VMM_GET_V0_PTES; break; | |
92 | case LAZY: args.type = NVIF_VMM_GET_V0_LAZY; break; | |
93 | default: | |
94 | WARN_ON(1); | |
95 | return -EINVAL; | |
96 | } | |
97 | ||
98 | ret = nvif_object_mthd(&vmm->object, NVIF_VMM_V0_GET, | |
99 | &args, sizeof(args)); | |
100 | if (ret == 0) { | |
101 | vma->addr = args.addr; | |
102 | vma->size = args.size; | |
103 | } | |
104 | return ret; | |
105 | } | |
106 | ||
107 | void | |
108 | nvif_vmm_fini(struct nvif_vmm *vmm) | |
109 | { | |
110 | kfree(vmm->page); | |
111 | nvif_object_fini(&vmm->object); | |
112 | } | |
113 | ||
114 | int | |
115 | nvif_vmm_init(struct nvif_mmu *mmu, s32 oclass, u64 addr, u64 size, | |
116 | void *argv, u32 argc, struct nvif_vmm *vmm) | |
117 | { | |
118 | struct nvif_vmm_v0 *args; | |
119 | u32 argn = sizeof(*args) + argc; | |
120 | int ret = -ENOSYS, i; | |
121 | ||
122 | vmm->object.client = NULL; | |
123 | vmm->page = NULL; | |
124 | ||
125 | if (!(args = kmalloc(argn, GFP_KERNEL))) | |
126 | return -ENOMEM; | |
127 | args->version = 0; | |
128 | args->addr = addr; | |
129 | args->size = size; | |
130 | memcpy(args->data, argv, argc); | |
131 | ||
132 | ret = nvif_object_init(&mmu->object, 0, oclass, args, argn, | |
133 | &vmm->object); | |
134 | if (ret) | |
135 | goto done; | |
136 | ||
137 | vmm->start = args->addr; | |
138 | vmm->limit = args->size; | |
139 | ||
140 | vmm->page_nr = args->page_nr; | |
6da2ec56 KC |
141 | vmm->page = kmalloc_array(vmm->page_nr, sizeof(*vmm->page), |
142 | GFP_KERNEL); | |
920d2b5e BS |
143 | if (!vmm->page) { |
144 | ret = -ENOMEM; | |
145 | goto done; | |
146 | } | |
147 | ||
148 | for (i = 0; i < vmm->page_nr; i++) { | |
149 | struct nvif_vmm_page_v0 args = { .index = i }; | |
150 | ||
151 | ret = nvif_object_mthd(&vmm->object, NVIF_VMM_V0_PAGE, | |
152 | &args, sizeof(args)); | |
153 | if (ret) | |
154 | break; | |
155 | ||
156 | vmm->page[i].shift = args.shift; | |
157 | vmm->page[i].sparse = args.sparse; | |
158 | vmm->page[i].vram = args.vram; | |
159 | vmm->page[i].host = args.host; | |
160 | vmm->page[i].comp = args.comp; | |
161 | } | |
162 | ||
163 | done: | |
164 | if (ret) | |
165 | nvif_vmm_fini(vmm); | |
166 | kfree(args); | |
167 | return ret; | |
168 | } |