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 35static struct usb_device_id ath3k_table[] = { 36 /* Atheros AR3011 */ 37 { USB_DEVICE(0x0CF3, 0x3000) }, 38 { } /* Terminating entry */ 39}; 40 41MODULE_DEVICE_TABLE(usb, ath3k_table); 42 43#define USB_REQ_DFU_DNLOAD 1 44#define BULK_SIZE 4096 45 46struct ath3k_data { 47 struct usb_device *udev; 48 u8 *fw_data; 49 u32 fw_size; 50 u32 fw_sent; 51}; 52 53static int ath3k_load_firmware(struct ath3k_data *data, 54 unsigned char *firmware, 55 int count) 56{ 57 u8 *send_buf; 58 int err, pipe, len, size, sent = 0; 59 60 BT_DBG("ath3k %p udev %p", data, data->udev); 61 62 pipe = usb_sndctrlpipe(data->udev, 0); 63 64 if ((usb_control_msg(data->udev, pipe, 65 USB_REQ_DFU_DNLOAD, 66 USB_TYPE_VENDOR, 0, 0, 67 firmware, 20, USB_CTRL_SET_TIMEOUT)) < 0) { 68 BT_ERR("Can't change to loading configuration err"); 69 return -EBUSY; 70 } 71 sent += 20; 72 count -= 20; 73 74 send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC); 75 if (!send_buf) { 76 BT_ERR("Can't allocate memory chunk for firmware"); 77 return -ENOMEM; 78 } 79 80 while (count) { 81 size = min_t(uint, count, BULK_SIZE); 82 pipe = usb_sndbulkpipe(data->udev, 0x02); 83 memcpy(send_buf, firmware + sent, size); 84 85 err = usb_bulk_msg(data->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 101error: 102 kfree(send_buf); 103 return err; 104} 105 106static 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 struct ath3k_data *data; 112 int size; 113 114 BT_DBG("intf %p id %p", intf, id); 115 116 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 117 return -ENODEV; 118 119 data = kzalloc(sizeof(*data), GFP_KERNEL); 120 if (!data) 121 return -ENOMEM; 122 123 data->udev = udev; 124 125 if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) { 126 kfree(data); 127 return -EIO; 128 } 129 130 size = max_t(uint, firmware->size, 4096); 131 data->fw_data = kmalloc(size, GFP_KERNEL); 132 if (!data->fw_data) { 133 release_firmware(firmware); 134 kfree(data); 135 return -ENOMEM; 136 } 137 138 memcpy(data->fw_data, firmware->data, firmware->size); 139 data->fw_size = firmware->size; 140 data->fw_sent = 0; 141 release_firmware(firmware); 142 143 usb_set_intfdata(intf, data); 144 if (ath3k_load_firmware(data, data->fw_data, data->fw_size)) { 145 usb_set_intfdata(intf, NULL); 146 kfree(data->fw_data); 147 kfree(data); 148 return -EIO; 149 } 150 151 return 0; 152} 153 154static void ath3k_disconnect(struct usb_interface *intf) 155{ 156 struct ath3k_data *data = usb_get_intfdata(intf); 157 158 BT_DBG("ath3k_disconnect intf %p", intf); 159 160 kfree(data->fw_data); 161 kfree(data); 162} 163 164static struct usb_driver ath3k_driver = { 165 .name = "ath3k", 166 .probe = ath3k_probe, 167 .disconnect = ath3k_disconnect, 168 .id_table = ath3k_table, 169}; 170 171static int __init ath3k_init(void) 172{ 173 BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION); 174 return usb_register(&ath3k_driver); 175} 176 177static void __exit ath3k_exit(void) 178{ 179 usb_deregister(&ath3k_driver); 180} 181 182module_init(ath3k_init); 183module_exit(ath3k_exit); 184 185MODULE_AUTHOR("Atheros Communications"); 186MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); 187MODULE_VERSION(VERSION); 188MODULE_LICENSE("GPL"); 189MODULE_FIRMWARE("ath3k-1.fw"); 190