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 { } /* Terminating entry */ 43 }; 44 45 MODULE_DEVICE_TABLE(usb, ath3k_table); 46 47 #define USB_REQ_DFU_DNLOAD 1 48 #define BULK_SIZE 4096 49 50 struct ath3k_data { 51 struct usb_device *udev; 52 u8 *fw_data; 53 u32 fw_size; 54 u32 fw_sent; 55 }; 56 57 static int ath3k_load_firmware(struct ath3k_data *data, 58 unsigned char *firmware, 59 int count) 60 { 61 u8 *send_buf; 62 int err, pipe, len, size, sent = 0; 63 64 BT_DBG("ath3k %p udev %p", data, data->udev); 65 66 pipe = usb_sndctrlpipe(data->udev, 0); 67 68 if ((usb_control_msg(data->udev, pipe, 69 USB_REQ_DFU_DNLOAD, 70 USB_TYPE_VENDOR, 0, 0, 71 firmware, 20, USB_CTRL_SET_TIMEOUT)) < 0) { 72 BT_ERR("Can't change to loading configuration err"); 73 return -EBUSY; 74 } 75 sent += 20; 76 count -= 20; 77 78 send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC); 79 if (!send_buf) { 80 BT_ERR("Can't allocate memory chunk for firmware"); 81 return -ENOMEM; 82 } 83 84 while (count) { 85 size = min_t(uint, count, BULK_SIZE); 86 pipe = usb_sndbulkpipe(data->udev, 0x02); 87 memcpy(send_buf, firmware + sent, size); 88 89 err = usb_bulk_msg(data->udev, pipe, send_buf, size, 90 &len, 3000); 91 92 if (err || (len != size)) { 93 BT_ERR("Error in firmware loading err = %d," 94 "len = %d, size = %d", err, len, size); 95 goto error; 96 } 97 98 sent += size; 99 count -= size; 100 } 101 102 kfree(send_buf); 103 return 0; 104 105 error: 106 kfree(send_buf); 107 return err; 108 } 109 110 static int ath3k_probe(struct usb_interface *intf, 111 const struct usb_device_id *id) 112 { 113 const struct firmware *firmware; 114 struct usb_device *udev = interface_to_usbdev(intf); 115 struct ath3k_data *data; 116 int size; 117 118 BT_DBG("intf %p id %p", intf, id); 119 120 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 121 return -ENODEV; 122 123 data = kzalloc(sizeof(*data), GFP_KERNEL); 124 if (!data) 125 return -ENOMEM; 126 127 data->udev = udev; 128 129 if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) { 130 kfree(data); 131 return -EIO; 132 } 133 134 size = max_t(uint, firmware->size, 4096); 135 data->fw_data = kmalloc(size, GFP_KERNEL); 136 if (!data->fw_data) { 137 release_firmware(firmware); 138 kfree(data); 139 return -ENOMEM; 140 } 141 142 memcpy(data->fw_data, firmware->data, firmware->size); 143 data->fw_size = firmware->size; 144 data->fw_sent = 0; 145 release_firmware(firmware); 146 147 usb_set_intfdata(intf, data); 148 if (ath3k_load_firmware(data, data->fw_data, data->fw_size)) { 149 usb_set_intfdata(intf, NULL); 150 kfree(data->fw_data); 151 kfree(data); 152 return -EIO; 153 } 154 155 return 0; 156 } 157 158 static void ath3k_disconnect(struct usb_interface *intf) 159 { 160 struct ath3k_data *data = usb_get_intfdata(intf); 161 162 BT_DBG("ath3k_disconnect intf %p", intf); 163 164 kfree(data->fw_data); 165 kfree(data); 166 } 167 168 static struct usb_driver ath3k_driver = { 169 .name = "ath3k", 170 .probe = ath3k_probe, 171 .disconnect = ath3k_disconnect, 172 .id_table = ath3k_table, 173 }; 174 175 static int __init ath3k_init(void) 176 { 177 BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION); 178 return usb_register(&ath3k_driver); 179 } 180 181 static void __exit ath3k_exit(void) 182 { 183 usb_deregister(&ath3k_driver); 184 } 185 186 module_init(ath3k_init); 187 module_exit(ath3k_exit); 188 189 MODULE_AUTHOR("Atheros Communications"); 190 MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); 191 MODULE_VERSION(VERSION); 192 MODULE_LICENSE("GPL"); 193 MODULE_FIRMWARE("ath3k-1.fw"); 194