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