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
27int
28nvif_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
41void
42nvif_mem_dtor(struct nvif_mem *mem)
43{
44 nvif_object_dtor(&mem->object);
45}
46
47int
48nvif_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
87int
88nvif_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

source code of linux/drivers/gpu/drm/nouveau/nvif/mem.c