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