1 /*
2 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
21 */
22
23 #include "acr.h"
24
25 #include <core/firmware.h>
26
27 /**
28 * Convenience function to duplicate a firmware file in memory and check that
29 * it has the required minimum size.
30 */
31 void *
32 nvkm_acr_load_firmware(const struct nvkm_subdev *subdev, const char *name,
33 size_t min_size)
34 {
35 const struct firmware *fw;
36 void *blob;
37 int ret;
38
39 ret = nvkm_firmware_get(subdev, name, &fw);
40 if (ret)
41 return ERR_PTR(ret);
42 if (fw->size < min_size) {
43 nvkm_error(subdev, "%s is smaller than expected size %zu\n",
44 name, min_size);
45 nvkm_firmware_put(fw);
46 return ERR_PTR(-EINVAL);
47 }
48 blob = kmemdup(fw->data, fw->size, GFP_KERNEL);
49 nvkm_firmware_put(fw);
50 if (!blob)
51 return ERR_PTR(-ENOMEM);
52
53 return blob;
54 }