diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00firmware.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00firmware.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00firmware.c b/drivers/net/wireless/rt2x00/rt2x00firmware.c new file mode 100644 index 000000000..c2dcec2cd --- /dev/null +++ b/drivers/net/wireless/rt2x00/rt2x00firmware.c @@ -0,0 +1,129 @@ +/* + Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> + Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com> + <http://rt2x00.serialmonkey.com> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +/* + 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 = reject_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; +} |