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/*
* 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);
}
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