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/mem.h> |
23 | #include <nvif/client.h> |
24 | |
25 | #include <nvif/if000a.h> |
26 | |
27 | int |
28 | nvif_mem_ctor_map(struct nvif_mmu *mmu, const char *name, u8 type, u64 size, |
29 | struct nvif_mem *mem) |
30 | { |
31 | int ret = nvif_mem_ctor(mmu, name, mmu->mem, NVIF_MEM_MAPPABLE | type, |
32 | 0, size, NULL, 0, mem); |
33 | if (ret == 0) { |
34 | ret = nvif_object_map(&mem->object, NULL, 0); |
35 | if (ret) |
36 | nvif_mem_dtor(mem); |
37 | } |
38 | return ret; |
39 | } |
40 | |
41 | void |
42 | nvif_mem_dtor(struct nvif_mem *mem) |
43 | { |
44 | nvif_object_dtor(&mem->object); |
45 | } |
46 | |
47 | int |
48 | nvif_mem_ctor_type(struct nvif_mmu *mmu, const char *name, s32 oclass, |
49 | int type, u8 page, u64 size, void *argv, u32 argc, |
50 | struct nvif_mem *mem) |
51 | { |
52 | struct nvif_mem_v0 *args; |
53 | u8 stack[128]; |
54 | int ret; |
55 | |
56 | mem->object.client = NULL; |
57 | if (type < 0) |
58 | return -EINVAL; |
59 | |
60 | if (sizeof(*args) + argc > sizeof(stack)) { |
61 | if (!(args = kmalloc(sizeof(*args) + argc, GFP_KERNEL))) |
62 | return -ENOMEM; |
63 | } else { |
64 | args = (void *)stack; |
65 | } |
66 | args->version = 0; |
67 | args->type = type; |
68 | args->page = page; |
69 | args->size = size; |
70 | memcpy(args->data, argv, argc); |
71 | |
72 | ret = nvif_object_ctor(&mmu->object, name ? name : "nvifMem" , 0, oclass, |
73 | args, sizeof(*args) + argc, &mem->object); |
74 | if (ret == 0) { |
75 | mem->type = mmu->type[type].type; |
76 | mem->page = args->page; |
77 | mem->addr = args->addr; |
78 | mem->size = args->size; |
79 | } |
80 | |
81 | if (args != (void *)stack) |
82 | kfree(args); |
83 | return ret; |
84 | |
85 | } |
86 | |
87 | int |
88 | nvif_mem_ctor(struct nvif_mmu *mmu, const char *name, s32 oclass, u8 type, |
89 | u8 page, u64 size, void *argv, u32 argc, struct nvif_mem *mem) |
90 | { |
91 | int ret = -EINVAL, i; |
92 | |
93 | mem->object.client = NULL; |
94 | |
95 | for (i = 0; ret && i < mmu->type_nr; i++) { |
96 | if ((mmu->type[i].type & type) == type) { |
97 | ret = nvif_mem_ctor_type(mmu, name, oclass, i, page, |
98 | size, argv, argc, mem); |
99 | } |
100 | } |
101 | |
102 | return ret; |
103 | } |
104 | |