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1 | /* |
2 | * Copyright 2015 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 <bskeggs@redhat.com> | |
23 | */ | |
24 | #include "ram.h" | |
25 | ||
26 | int | |
27 | nvkm_ram_init(struct nvkm_ram *ram) | |
28 | { | |
29 | if (ram->func->init) | |
30 | return ram->func->init(ram); | |
31 | return 0; | |
32 | } | |
33 | ||
34 | void | |
35 | nvkm_ram_del(struct nvkm_ram **pram) | |
36 | { | |
37 | struct nvkm_ram *ram = *pram; | |
38 | if (ram && !WARN_ON(!ram->func)) { | |
39 | if (ram->func->dtor) | |
40 | *pram = ram->func->dtor(ram); | |
41 | nvkm_mm_fini(&ram->tags); | |
42 | nvkm_mm_fini(&ram->vram); | |
43 | kfree(*pram); | |
44 | *pram = NULL; | |
45 | } | |
46 | } | |
47 | ||
48 | int | |
49 | nvkm_ram_ctor(const struct nvkm_ram_func *func, struct nvkm_fb *fb, | |
50 | enum nvkm_ram_type type, u64 size, u32 tags, | |
51 | struct nvkm_ram *ram) | |
52 | { | |
53 | static const char *name[] = { | |
54 | [NVKM_RAM_TYPE_UNKNOWN] = "of unknown memory type", | |
55 | [NVKM_RAM_TYPE_STOLEN ] = "stolen system memory", | |
56 | [NVKM_RAM_TYPE_SGRAM ] = "SGRAM", | |
57 | [NVKM_RAM_TYPE_SDRAM ] = "SDRAM", | |
58 | [NVKM_RAM_TYPE_DDR1 ] = "DDR1", | |
59 | [NVKM_RAM_TYPE_DDR2 ] = "DDR2", | |
60 | [NVKM_RAM_TYPE_DDR3 ] = "DDR3", | |
61 | [NVKM_RAM_TYPE_GDDR2 ] = "GDDR2", | |
62 | [NVKM_RAM_TYPE_GDDR3 ] = "GDDR3", | |
63 | [NVKM_RAM_TYPE_GDDR4 ] = "GDDR4", | |
64 | [NVKM_RAM_TYPE_GDDR5 ] = "GDDR5", | |
65 | }; | |
66 | struct nvkm_subdev *subdev = &fb->subdev; | |
67 | int ret; | |
68 | ||
69 | nvkm_info(subdev, "%d MiB %s\n", (int)(size >> 20), name[type]); | |
70 | ram->func = func; | |
71 | ram->fb = fb; | |
72 | ram->type = type; | |
73 | ram->size = size; | |
74 | ||
75 | if (!nvkm_mm_initialised(&ram->vram)) { | |
76 | ret = nvkm_mm_init(&ram->vram, 0, size >> NVKM_RAM_MM_SHIFT, 1); | |
77 | if (ret) | |
78 | return ret; | |
79 | } | |
80 | ||
81 | if (!nvkm_mm_initialised(&ram->tags)) { | |
82 | ret = nvkm_mm_init(&ram->tags, 0, tags ? ++tags : 0, 1); | |
83 | if (ret) | |
84 | return ret; | |
85 | ||
86 | nvkm_debug(subdev, "%d compression tags\n", tags); | |
87 | } | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
92 | int | |
93 | nvkm_ram_new_(const struct nvkm_ram_func *func, struct nvkm_fb *fb, | |
94 | enum nvkm_ram_type type, u64 size, u32 tags, | |
95 | struct nvkm_ram **pram) | |
96 | { | |
97 | if (!(*pram = kzalloc(sizeof(**pram), GFP_KERNEL))) | |
98 | return -ENOMEM; | |
99 | return nvkm_ram_ctor(func, fb, type, size, tags, *pram); | |
100 | } |