Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1 | /* |
Ivo van Doorn | 811aa9c | 2008-02-03 15:42:53 +0100 | [diff] [blame] | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 3 | <http://rt2x00.serialmonkey.com> |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the |
| 17 | Free Software Foundation, Inc., |
| 18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | Module: rt2x00lib |
| 23 | Abstract: rt2x00 firmware loading routines. |
| 24 | */ |
| 25 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 26 | #include <linux/kernel.h> |
| 27 | #include <linux/module.h> |
| 28 | |
| 29 | #include "rt2x00.h" |
| 30 | #include "rt2x00lib.h" |
| 31 | |
| 32 | static int rt2x00lib_request_firmware(struct rt2x00_dev *rt2x00dev) |
| 33 | { |
| 34 | struct device *device = wiphy_dev(rt2x00dev->hw->wiphy); |
| 35 | const struct firmware *fw; |
| 36 | char *fw_name; |
| 37 | int retval; |
| 38 | u16 crc; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 39 | |
| 40 | /* |
| 41 | * Read correct firmware from harddisk. |
| 42 | */ |
| 43 | fw_name = rt2x00dev->ops->lib->get_firmware_name(rt2x00dev); |
| 44 | if (!fw_name) { |
| 45 | ERROR(rt2x00dev, |
| 46 | "Invalid firmware filename.\n" |
| 47 | "Please file bug report to %s.\n", DRV_PROJECT); |
| 48 | return -EINVAL; |
| 49 | } |
| 50 | |
| 51 | INFO(rt2x00dev, "Loading firmware file '%s'.\n", fw_name); |
| 52 | |
| 53 | retval = request_firmware(&fw, fw_name, device); |
| 54 | if (retval) { |
| 55 | ERROR(rt2x00dev, "Failed to request Firmware.\n"); |
| 56 | return retval; |
| 57 | } |
| 58 | |
| 59 | if (!fw || !fw->size || !fw->data) { |
| 60 | ERROR(rt2x00dev, "Failed to read Firmware.\n"); |
| 61 | return -ENOENT; |
| 62 | } |
| 63 | |
Ivo van Doorn | a7f3a06 | 2008-03-09 22:44:54 +0100 | [diff] [blame] | 64 | crc = rt2x00dev->ops->lib->get_firmware_crc(fw->data, fw->size); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 65 | if (crc != (fw->data[fw->size - 2] << 8 | fw->data[fw->size - 1])) { |
Ivo van Doorn | 9404ef3 | 2008-02-03 15:48:38 +0100 | [diff] [blame] | 66 | ERROR(rt2x00dev, "Firmware checksum error.\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 67 | retval = -ENOENT; |
| 68 | goto exit; |
| 69 | } |
| 70 | |
| 71 | INFO(rt2x00dev, "Firmware detected - version: %d.%d.\n", |
| 72 | fw->data[fw->size - 4], fw->data[fw->size - 3]); |
| 73 | |
| 74 | rt2x00dev->fw = fw; |
| 75 | |
| 76 | return 0; |
| 77 | |
| 78 | exit: |
| 79 | release_firmware(fw); |
| 80 | |
| 81 | return retval; |
| 82 | } |
| 83 | |
| 84 | int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev) |
| 85 | { |
| 86 | int retval; |
| 87 | |
Ivo van Doorn | 9404ef3 | 2008-02-03 15:48:38 +0100 | [diff] [blame] | 88 | if (!test_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags)) |
| 89 | return 0; |
| 90 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 91 | if (!rt2x00dev->fw) { |
| 92 | retval = rt2x00lib_request_firmware(rt2x00dev); |
| 93 | if (retval) |
| 94 | return retval; |
| 95 | } |
| 96 | |
| 97 | /* |
| 98 | * Send firmware to the device. |
| 99 | */ |
| 100 | retval = rt2x00dev->ops->lib->load_firmware(rt2x00dev, |
| 101 | rt2x00dev->fw->data, |
| 102 | rt2x00dev->fw->size); |
| 103 | return retval; |
| 104 | } |
| 105 | |
| 106 | void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev) |
| 107 | { |
| 108 | release_firmware(rt2x00dev->fw); |
| 109 | rt2x00dev->fw = NULL; |
| 110 | } |