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// SPDX-License-Identifier: GPL-2.0-or-later
/*
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
<http://rt2x00.serialmonkey.com>
*/
/*
Module: rt2x00lib
Abstract: rt2x00 firmware loading routines.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include "rt2x00.h"
#include "rt2x00lib.h"
static int rt2x00lib_request_firmware(struct rt2x00_dev *rt2x00dev)
{
struct device *device = wiphy_dev(rt2x00dev->hw->wiphy);
const struct firmware *fw;
char *fw_name;
int retval;
/*
* Read correct firmware from harddisk.
*/
fw_name = rt2x00dev->ops->lib->get_firmware_name(rt2x00dev);
if (!fw_name) {
rt2x00_err(rt2x00dev,
"Invalid firmware filename\n"
"Please file bug report to %s\n", DRV_PROJECT);
return -EINVAL;
}
rt2x00_info(rt2x00dev, "Loading firmware file '%s'\n", fw_name);
retval = request_firmware(&fw, fw_name, device);
if (retval) {
rt2x00_err(rt2x00dev, "Failed to request Firmware\n");
return retval;
}
if (!fw || !fw->size || !fw->data) {
rt2x00_err(rt2x00dev, "Failed to read Firmware\n");
release_firmware(fw);
return -ENOENT;
}
rt2x00_info(rt2x00dev, "Firmware detected - version: %d.%d\n",
fw->data[fw->size - 4], fw->data[fw->size - 3]);
snprintf(rt2x00dev->hw->wiphy->fw_version,
sizeof(rt2x00dev->hw->wiphy->fw_version), "%d.%d",
fw->data[fw->size - 4], fw->data[fw->size - 3]);
retval = rt2x00dev->ops->lib->check_firmware(rt2x00dev, fw->data, fw->size);
switch (retval) {
case FW_OK:
break;
case FW_BAD_CRC:
rt2x00_err(rt2x00dev, "Firmware checksum error\n");
goto exit;
case FW_BAD_LENGTH:
rt2x00_err(rt2x00dev, "Invalid firmware file length (len=%zu)\n",
fw->size);
goto exit;
case FW_BAD_VERSION:
rt2x00_err(rt2x00dev, "Current firmware does not support detected chipset\n");
goto exit;
}
rt2x00dev->fw = fw;
return 0;
exit:
release_firmware(fw);
return -ENOENT;
}
int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev)
{
int retval;
if (!rt2x00_has_cap_flag(rt2x00dev, REQUIRE_FIRMWARE))
return 0;
if (!rt2x00dev->fw) {
retval = rt2x00lib_request_firmware(rt2x00dev);
if (retval)
return retval;
}
/*
* Send firmware to the device.
*/
retval = rt2x00dev->ops->lib->load_firmware(rt2x00dev,
rt2x00dev->fw->data,
rt2x00dev->fw->size);
/*
* When the firmware is uploaded to the hardware the LED
* association status might have been triggered, for correct
* LED handling it should now be reset.
*/
rt2x00leds_led_assoc(rt2x00dev, false);
return retval;
}
void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
{
release_firmware(rt2x00dev->fw);
rt2x00dev->fw = NULL;
}
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