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#include <core/device.h>
23#include <core/firmware.h>
24
25/**
26 * nvkm_firmware_get - load firmware from the official nvidia/chip/ directory
27 * @subdev	subdevice that will use that firmware
28 * @fwname	name of firmware file to load
29 * @fw		firmware structure to load to
30 *
31 * Use this function to load firmware files in the form nvidia/chip/fwname.bin.
32 * Firmware files released by NVIDIA will always follow this format.
33 */
34int
35nvkm_firmware_get_version(const struct nvkm_subdev *subdev, const char *fwname,
36			  int min_version, int max_version,
37			  const struct firmware **fw)
38{
39	struct nvkm_device *device = subdev->device;
40	char f[64];
41	char cname[16];
42	int i;
43
44	/* Convert device name to lowercase */
45	strncpy(cname, device->chip->name, sizeof(cname));
46	cname[sizeof(cname) - 1] = '\0';
47	i = strlen(cname);
48	while (i) {
49		--i;
50		cname[i] = tolower(cname[i]);
51	}
52
53	for (i = max_version; i >= min_version; i--) {
54		if (i != 0)
55			snprintf(f, sizeof(f), "nvidia/%s/%s-%d.bin", cname, fwname, i);
56		else
57			snprintf(f, sizeof(f), "nvidia/%s/%s.bin", cname, fwname);
58
59		if (!firmware_request_nowarn(fw, f, device->dev)) {
60			nvkm_debug(subdev, "firmware \"%s\" loaded\n", f);
61			return i;
62		}
63
64		nvkm_debug(subdev, "firmware \"%s\" unavailable\n", f);
65	}
66
67	nvkm_error(subdev, "failed to load firmware \"%s\"", fwname);
68	return -ENOENT;
69}
70
71int
72nvkm_firmware_get(const struct nvkm_subdev *subdev, const char *fwname,
73		  const struct firmware **fw)
74{
75	return nvkm_firmware_get_version(subdev, fwname, 0, 0, fw);
76}
77
78/**
79 * nvkm_firmware_put - release firmware loaded with nvkm_firmware_get
80 */
81void
82nvkm_firmware_put(const struct firmware *fw)
83{
84	release_firmware(fw);
85}

 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#include <core/device.h>
 
23
24/**
25 * nvkm_firmware_get - load firmware from the official nvidia/chip/ directory
26 * @device	device that will use that firmware
27 * @fwname	name of firmware file to load
28 * @fw		firmware structure to load to
29 *
30 * Use this function to load firmware files in the form nvidia/chip/fwname.bin.
31 * Firmware files released by NVIDIA will always follow this format.
32 */
33int
34nvkm_firmware_get(struct nvkm_device *device, const char *fwname,
35		  const struct firmware **fw)
 
36{
 
37	char f[64];
38	char cname[16];
39	int i;
40
41	/* Convert device name to lowercase */
42	strncpy(cname, device->chip->name, sizeof(cname));
43	cname[sizeof(cname) - 1] = '\0';
44	i = strlen(cname);
45	while (i) {
46		--i;
47		cname[i] = tolower(cname[i]);
48	}
49
50	snprintf(f, sizeof(f), "nvidia/%s/%s.bin", cname, fwname);
51	return request_firmware(fw, f, device->dev);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
52}
53
54/**
55 * nvkm_firmware_put - release firmware loaded with nvkm_firmware_get
56 */
57void
58nvkm_firmware_put(const struct firmware *fw)
59{
60	release_firmware(fw);
61}