1 /* 2 * Copyright (c) 2008-2009 Atheros Communications Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 * 18 */ 19 20 21 #include <linux/module.h> 22 #include <linux/kernel.h> 23 #include <linux/init.h> 24 #include <linux/slab.h> 25 #include <linux/types.h> 26 #include <linux/errno.h> 27 #include <linux/device.h> 28 #include <linux/firmware.h> 29 #include <linux/usb.h> 30 #include <net/bluetooth/bluetooth.h> 31 32 #define VERSION "1.0" 33 34 35 static struct usb_device_id ath3k_table[] = { 36 /* Atheros AR3011 */ 37 { USB_DEVICE(0x0CF3, 0x3000) }, 38 39 /* Atheros AR3011 with sflash firmware*/ 40 { USB_DEVICE(0x0CF3, 0x3002) }, 41 42 /* Atheros AR9285 Malbec with sflash firmware */ 43 { USB_DEVICE(0x03F0, 0x311D) }, 44 { } /* Terminating entry */ 45 }; 46 47 MODULE_DEVICE_TABLE(usb, ath3k_table); 48 49 #define USB_REQ_DFU_DNLOAD 1 50 #define BULK_SIZE 4096 51 52 static int ath3k_load_firmware(struct usb_device *udev, 53 const struct firmware *firmware) 54 { 55 u8 *send_buf; 56 int err, pipe, len, size, sent = 0; 57 int count = firmware->size; 58 59 BT_DBG("udev %p", udev); 60 61 pipe = usb_sndctrlpipe(udev, 0); 62 63 send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC); 64 if (!send_buf) { 65 BT_ERR("Can't allocate memory chunk for firmware"); 66 return -ENOMEM; 67 } 68 69 memcpy(send_buf, firmware->data, 20); 70 if ((err = usb_control_msg(udev, pipe, 71 USB_REQ_DFU_DNLOAD, 72 USB_TYPE_VENDOR, 0, 0, 73 send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) { 74 BT_ERR("Can't change to loading configuration err"); 75 goto error; 76 } 77 sent += 20; 78 count -= 20; 79 80 while (count) { 81 size = min_t(uint, count, BULK_SIZE); 82 pipe = usb_sndbulkpipe(udev, 0x02); 83 memcpy(send_buf, firmware->data + sent, size); 84 85 err = usb_bulk_msg(udev, pipe, send_buf, size, 86 &len, 3000); 87 88 if (err || (len != size)) { 89 BT_ERR("Error in firmware loading err = %d," 90 "len = %d, size = %d", err, len, size); 91 goto error; 92 } 93 94 sent += size; 95 count -= size; 96 } 97 98 kfree(send_buf); 99 return 0; 100 101 error: 102 kfree(send_buf); 103 return err; 104 } 105 106 static int ath3k_probe(struct usb_interface *intf, 107 const struct usb_device_id *id) 108 { 109 const struct firmware *firmware; 110 struct usb_device *udev = interface_to_usbdev(intf); 111 112 BT_DBG("intf %p id %p", intf, id); 113 114 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 115 return -ENODEV; 116 117 if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) { 118 return -EIO; 119 } 120 121 if (ath3k_load_firmware(udev, firmware)) { 122 release_firmware(firmware); 123 return -EIO; 124 } 125 release_firmware(firmware); 126 127 return 0; 128 } 129 130 static void ath3k_disconnect(struct usb_interface *intf) 131 { 132 BT_DBG("ath3k_disconnect intf %p", intf); 133 } 134 135 static struct usb_driver ath3k_driver = { 136 .name = "ath3k", 137 .probe = ath3k_probe, 138 .disconnect = ath3k_disconnect, 139 .id_table = ath3k_table, 140 }; 141 142 static int __init ath3k_init(void) 143 { 144 BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION); 145 return usb_register(&ath3k_driver); 146 } 147 148 static void __exit ath3k_exit(void) 149 { 150 usb_deregister(&ath3k_driver); 151 } 152 153 module_init(ath3k_init); 154 module_exit(ath3k_exit); 155 156 MODULE_AUTHOR("Atheros Communications"); 157 MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); 158 MODULE_VERSION(VERSION); 159 MODULE_LICENSE("GPL"); 160 MODULE_FIRMWARE("ath3k-1.fw"); 161