diff options
Diffstat (limited to 'include/os/linux/firmware.c')
-rw-r--r-- | include/os/linux/firmware.c | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/include/os/linux/firmware.c b/include/os/linux/firmware.c deleted file mode 100644 index 8f0344b..0000000 --- a/include/os/linux/firmware.c +++ /dev/null | |||
@@ -1,117 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved. | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify it | ||
5 | * under the terms and conditions of the GNU General Public License, | ||
6 | * version 2, as published by the Free Software Foundation. | ||
7 | * | ||
8 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
11 | * more details. | ||
12 | * | ||
13 | * You should have received a copy of the GNU General Public License | ||
14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
15 | */ | ||
16 | |||
17 | #include <linux/firmware.h> | ||
18 | |||
19 | #include <nvgpu/kmem.h> | ||
20 | #include <nvgpu/bug.h> | ||
21 | #include <nvgpu/firmware.h> | ||
22 | #include <nvgpu/gk20a.h> | ||
23 | |||
24 | #include "platform_gk20a.h" | ||
25 | #include "os_linux.h" | ||
26 | |||
27 | static const struct firmware *do_request_firmware(struct device *dev, | ||
28 | const char *prefix, const char *fw_name, int flags) | ||
29 | { | ||
30 | const struct firmware *fw; | ||
31 | char *fw_path = NULL; | ||
32 | int path_len, err; | ||
33 | |||
34 | if (prefix) { | ||
35 | path_len = strlen(prefix) + strlen(fw_name); | ||
36 | path_len += 2; /* for the path separator and zero terminator*/ | ||
37 | |||
38 | fw_path = nvgpu_kzalloc(get_gk20a(dev), | ||
39 | sizeof(*fw_path) * path_len); | ||
40 | if (!fw_path) | ||
41 | return NULL; | ||
42 | |||
43 | sprintf(fw_path, "%s/%s", prefix, fw_name); | ||
44 | fw_name = fw_path; | ||
45 | } | ||
46 | |||
47 | if (flags & NVGPU_REQUEST_FIRMWARE_NO_WARN) | ||
48 | err = request_firmware_direct(&fw, fw_name, dev); | ||
49 | else | ||
50 | err = request_firmware(&fw, fw_name, dev); | ||
51 | |||
52 | nvgpu_kfree(get_gk20a(dev), fw_path); | ||
53 | if (err) | ||
54 | return NULL; | ||
55 | return fw; | ||
56 | } | ||
57 | |||
58 | /* This is a simple wrapper around request_firmware that takes 'fw_name' and | ||
59 | * applies an IP specific relative path prefix to it. The caller is | ||
60 | * responsible for calling nvgpu_release_firmware later. */ | ||
61 | struct nvgpu_firmware *nvgpu_request_firmware(struct gk20a *g, | ||
62 | const char *fw_name, | ||
63 | int flags) | ||
64 | { | ||
65 | struct device *dev = dev_from_gk20a(g); | ||
66 | struct nvgpu_firmware *fw; | ||
67 | const struct firmware *linux_fw; | ||
68 | |||
69 | /* current->fs is NULL when calling from SYS_EXIT. | ||
70 | Add a check here to prevent crash in request_firmware */ | ||
71 | if (!current->fs || !fw_name) | ||
72 | return NULL; | ||
73 | |||
74 | fw = nvgpu_kzalloc(g, sizeof(*fw)); | ||
75 | if (!fw) | ||
76 | return NULL; | ||
77 | |||
78 | linux_fw = do_request_firmware(dev, g->name, fw_name, flags); | ||
79 | |||
80 | #ifdef CONFIG_TEGRA_GK20A | ||
81 | /* TO BE REMOVED - Support loading from legacy SOC specific path. */ | ||
82 | if (!linux_fw && !(flags & NVGPU_REQUEST_FIRMWARE_NO_SOC)) { | ||
83 | struct gk20a_platform *platform = gk20a_get_platform(dev); | ||
84 | linux_fw = do_request_firmware(dev, | ||
85 | platform->soc_name, fw_name, flags); | ||
86 | } | ||
87 | #endif | ||
88 | |||
89 | if (!linux_fw) | ||
90 | goto err; | ||
91 | |||
92 | fw->data = nvgpu_kmalloc(g, linux_fw->size); | ||
93 | if (!fw->data) | ||
94 | goto err_release; | ||
95 | |||
96 | memcpy(fw->data, linux_fw->data, linux_fw->size); | ||
97 | fw->size = linux_fw->size; | ||
98 | |||
99 | release_firmware(linux_fw); | ||
100 | |||
101 | return fw; | ||
102 | |||
103 | err_release: | ||
104 | release_firmware(linux_fw); | ||
105 | err: | ||
106 | nvgpu_kfree(g, fw); | ||
107 | return NULL; | ||
108 | } | ||
109 | |||
110 | void nvgpu_release_firmware(struct gk20a *g, struct nvgpu_firmware *fw) | ||
111 | { | ||
112 | if(!fw) | ||
113 | return; | ||
114 | |||
115 | nvgpu_kfree(g, fw->data); | ||
116 | nvgpu_kfree(g, fw); | ||
117 | } | ||