| /* |
| * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| */ |
| #include <core/device.h> |
| #include <core/firmware.h> |
| |
| int |
| nvkm_firmware_load_name(const struct nvkm_subdev *subdev, const char *base, |
| const char *name, int ver, const struct firmware **pfw) |
| { |
| char path[64]; |
| int ret; |
| |
| snprintf(path, sizeof(path), "%s%s", base, name); |
| ret = nvkm_firmware_get(subdev, path, ver, pfw); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| int |
| nvkm_firmware_load_blob(const struct nvkm_subdev *subdev, const char *base, |
| const char *name, int ver, struct nvkm_blob *blob) |
| { |
| const struct firmware *fw; |
| int ret; |
| |
| ret = nvkm_firmware_load_name(subdev, base, name, ver, &fw); |
| if (ret == 0) { |
| blob->data = kmemdup(fw->data, fw->size, GFP_KERNEL); |
| blob->size = fw->size; |
| nvkm_firmware_put(fw); |
| if (!blob->data) |
| return -ENOMEM; |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * nvkm_firmware_get - load firmware from the official nvidia/chip/ directory |
| * @subdev subdevice that will use that firmware |
| * @fwname name of firmware file to load |
| * @fw firmware structure to load to |
| * |
| * Use this function to load firmware files in the form nvidia/chip/fwname.bin. |
| * Firmware files released by NVIDIA will always follow this format. |
| */ |
| int |
| nvkm_firmware_get(const struct nvkm_subdev *subdev, const char *fwname, int ver, |
| const struct firmware **fw) |
| { |
| struct nvkm_device *device = subdev->device; |
| char f[64]; |
| char cname[16]; |
| int i; |
| |
| /* Convert device name to lowercase */ |
| strncpy(cname, device->chip->name, sizeof(cname)); |
| cname[sizeof(cname) - 1] = '\0'; |
| i = strlen(cname); |
| while (i) { |
| --i; |
| cname[i] = tolower(cname[i]); |
| } |
| |
| if (ver != 0) |
| snprintf(f, sizeof(f), "nvidia/%s/%s-%d.bin", cname, fwname, ver); |
| else |
| snprintf(f, sizeof(f), "nvidia/%s/%s.bin", cname, fwname); |
| |
| if (!firmware_request_nowarn(fw, f, device->dev)) { |
| nvkm_debug(subdev, "firmware \"%s\" loaded - %zu byte(s)\n", |
| f, (*fw)->size); |
| return 0; |
| } |
| |
| nvkm_debug(subdev, "firmware \"%s\" unavailable\n", f); |
| return -ENOENT; |
| } |
| |
| /** |
| * nvkm_firmware_put - release firmware loaded with nvkm_firmware_get |
| */ |
| void |
| nvkm_firmware_put(const struct firmware *fw) |
| { |
| release_firmware(fw); |
| } |