Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Broadcom Blutonium firmware driver |
| 4 | * |
| 5 | * Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com> |
| 6 | * Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org> |
| 7 | * |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | */ |
| 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/module.h> |
| 26 | |
David Herrmann | fc501ad | 2011-10-26 11:13:13 +0200 | [diff] [blame] | 27 | #include <linux/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/kernel.h> |
| 29 | #include <linux/init.h> |
| 30 | #include <linux/slab.h> |
| 31 | #include <linux/types.h> |
| 32 | #include <linux/errno.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
| 34 | #include <linux/device.h> |
| 35 | #include <linux/firmware.h> |
| 36 | |
| 37 | #include <linux/usb.h> |
| 38 | |
| 39 | #include <net/bluetooth/bluetooth.h> |
| 40 | |
Marcel Holtmann | 943d56b | 2008-08-07 22:26:55 +0200 | [diff] [blame] | 41 | #define VERSION "1.2" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
Márton Németh | 8978111 | 2010-01-10 13:39:15 +0100 | [diff] [blame] | 43 | static const struct usb_device_id bcm203x_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | /* Broadcom Blutonium (BCM2033) */ |
| 45 | { USB_DEVICE(0x0a5c, 0x2033) }, |
| 46 | |
| 47 | { } /* Terminating entry */ |
| 48 | }; |
| 49 | |
| 50 | MODULE_DEVICE_TABLE(usb, bcm203x_table); |
| 51 | |
| 52 | #define BCM203X_ERROR 0 |
| 53 | #define BCM203X_RESET 1 |
| 54 | #define BCM203X_LOAD_MINIDRV 2 |
| 55 | #define BCM203X_SELECT_MEMORY 3 |
| 56 | #define BCM203X_CHECK_MEMORY 4 |
| 57 | #define BCM203X_LOAD_FIRMWARE 5 |
| 58 | #define BCM203X_CHECK_FIRMWARE 6 |
| 59 | |
| 60 | #define BCM203X_IN_EP 0x81 |
| 61 | #define BCM203X_OUT_EP 0x02 |
| 62 | |
| 63 | struct bcm203x_data { |
| 64 | struct usb_device *udev; |
| 65 | |
| 66 | unsigned long state; |
| 67 | |
Marcel Holtmann | 3f53069 | 2006-10-15 17:31:19 +0200 | [diff] [blame] | 68 | struct work_struct work; |
David Herrmann | fc501ad | 2011-10-26 11:13:13 +0200 | [diff] [blame] | 69 | atomic_t shutdown; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
| 71 | struct urb *urb; |
| 72 | unsigned char *buffer; |
| 73 | |
| 74 | unsigned char *fw_data; |
| 75 | unsigned int fw_size; |
| 76 | unsigned int fw_sent; |
| 77 | }; |
| 78 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 79 | static void bcm203x_complete(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { |
| 81 | struct bcm203x_data *data = urb->context; |
| 82 | struct usb_device *udev = urb->dev; |
| 83 | int len; |
| 84 | |
| 85 | BT_DBG("udev %p urb %p", udev, urb); |
| 86 | |
| 87 | if (urb->status) { |
| 88 | BT_ERR("URB failed with status %d", urb->status); |
| 89 | data->state = BCM203X_ERROR; |
| 90 | return; |
| 91 | } |
| 92 | |
| 93 | switch (data->state) { |
| 94 | case BCM203X_LOAD_MINIDRV: |
| 95 | memcpy(data->buffer, "#", 1); |
| 96 | |
| 97 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), |
| 98 | data->buffer, 1, bcm203x_complete, data); |
| 99 | |
| 100 | data->state = BCM203X_SELECT_MEMORY; |
| 101 | |
David Herrmann | fc501ad | 2011-10-26 11:13:13 +0200 | [diff] [blame] | 102 | /* use workqueue to have a small delay */ |
Marcel Holtmann | 3f53069 | 2006-10-15 17:31:19 +0200 | [diff] [blame] | 103 | schedule_work(&data->work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | break; |
| 105 | |
| 106 | case BCM203X_SELECT_MEMORY: |
| 107 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), |
| 108 | data->buffer, 32, bcm203x_complete, data, 1); |
| 109 | |
| 110 | data->state = BCM203X_CHECK_MEMORY; |
| 111 | |
| 112 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) |
| 113 | BT_ERR("Can't submit URB"); |
| 114 | break; |
| 115 | |
| 116 | case BCM203X_CHECK_MEMORY: |
| 117 | if (data->buffer[0] != '#') { |
| 118 | BT_ERR("Memory select failed"); |
| 119 | data->state = BCM203X_ERROR; |
| 120 | break; |
| 121 | } |
| 122 | |
| 123 | data->state = BCM203X_LOAD_FIRMWARE; |
| 124 | |
| 125 | case BCM203X_LOAD_FIRMWARE: |
| 126 | if (data->fw_sent == data->fw_size) { |
| 127 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), |
| 128 | data->buffer, 32, bcm203x_complete, data, 1); |
| 129 | |
| 130 | data->state = BCM203X_CHECK_FIRMWARE; |
| 131 | } else { |
| 132 | len = min_t(uint, data->fw_size - data->fw_sent, 4096); |
| 133 | |
| 134 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), |
| 135 | data->fw_data + data->fw_sent, len, bcm203x_complete, data); |
| 136 | |
| 137 | data->fw_sent += len; |
| 138 | } |
| 139 | |
| 140 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) |
| 141 | BT_ERR("Can't submit URB"); |
| 142 | break; |
| 143 | |
| 144 | case BCM203X_CHECK_FIRMWARE: |
| 145 | if (data->buffer[0] != '.') { |
| 146 | BT_ERR("Firmware loading failed"); |
| 147 | data->state = BCM203X_ERROR; |
| 148 | break; |
| 149 | } |
| 150 | |
| 151 | data->state = BCM203X_RESET; |
| 152 | break; |
| 153 | } |
| 154 | } |
| 155 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 156 | static void bcm203x_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 158 | struct bcm203x_data *data = |
| 159 | container_of(work, struct bcm203x_data, work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
David Herrmann | fc501ad | 2011-10-26 11:13:13 +0200 | [diff] [blame] | 161 | if (atomic_read(&data->shutdown)) |
| 162 | return; |
| 163 | |
David Herrmann | b91a4e3 | 2011-10-25 21:13:36 +0200 | [diff] [blame] | 164 | if (usb_submit_urb(data->urb, GFP_KERNEL) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | BT_ERR("Can't submit URB"); |
| 166 | } |
| 167 | |
| 168 | static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id) |
| 169 | { |
| 170 | const struct firmware *firmware; |
| 171 | struct usb_device *udev = interface_to_usbdev(intf); |
| 172 | struct bcm203x_data *data; |
| 173 | int size; |
| 174 | |
| 175 | BT_DBG("intf %p id %p", intf, id); |
| 176 | |
Marcel Holtmann | 943d56b | 2008-08-07 22:26:55 +0200 | [diff] [blame] | 177 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | return -ENODEV; |
| 179 | |
Deepak Saxena | 089b1db | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 180 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | if (!data) { |
| 182 | BT_ERR("Can't allocate memory for data structure"); |
| 183 | return -ENOMEM; |
| 184 | } |
| 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | data->udev = udev; |
| 187 | data->state = BCM203X_LOAD_MINIDRV; |
| 188 | |
| 189 | data->urb = usb_alloc_urb(0, GFP_KERNEL); |
| 190 | if (!data->urb) { |
| 191 | BT_ERR("Can't allocate URB"); |
| 192 | kfree(data); |
| 193 | return -ENOMEM; |
| 194 | } |
| 195 | |
| 196 | if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) { |
| 197 | BT_ERR("Mini driver request failed"); |
| 198 | usb_free_urb(data->urb); |
| 199 | kfree(data); |
| 200 | return -EIO; |
| 201 | } |
| 202 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 203 | BT_DBG("minidrv data %p size %zu", firmware->data, firmware->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
| 205 | size = max_t(uint, firmware->size, 4096); |
| 206 | |
| 207 | data->buffer = kmalloc(size, GFP_KERNEL); |
| 208 | if (!data->buffer) { |
| 209 | BT_ERR("Can't allocate memory for mini driver"); |
| 210 | release_firmware(firmware); |
| 211 | usb_free_urb(data->urb); |
| 212 | kfree(data); |
| 213 | return -ENOMEM; |
| 214 | } |
| 215 | |
| 216 | memcpy(data->buffer, firmware->data, firmware->size); |
| 217 | |
| 218 | usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), |
| 219 | data->buffer, firmware->size, bcm203x_complete, data); |
| 220 | |
| 221 | release_firmware(firmware); |
| 222 | |
| 223 | if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) { |
| 224 | BT_ERR("Firmware request failed"); |
| 225 | usb_free_urb(data->urb); |
| 226 | kfree(data->buffer); |
| 227 | kfree(data); |
| 228 | return -EIO; |
| 229 | } |
| 230 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 231 | BT_DBG("firmware data %p size %zu", firmware->data, firmware->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
Julia Lawall | 5ee283c | 2010-05-15 23:19:15 +0200 | [diff] [blame] | 233 | data->fw_data = kmemdup(firmware->data, firmware->size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | if (!data->fw_data) { |
| 235 | BT_ERR("Can't allocate memory for firmware image"); |
Magnus Damm | 73ca66b | 2006-07-10 04:44:09 -0700 | [diff] [blame] | 236 | release_firmware(firmware); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | usb_free_urb(data->urb); |
| 238 | kfree(data->buffer); |
| 239 | kfree(data); |
| 240 | return -ENOMEM; |
| 241 | } |
| 242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | data->fw_size = firmware->size; |
| 244 | data->fw_sent = 0; |
| 245 | |
| 246 | release_firmware(firmware); |
| 247 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 248 | INIT_WORK(&data->work, bcm203x_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
| 250 | usb_set_intfdata(intf, data); |
| 251 | |
David Herrmann | fc501ad | 2011-10-26 11:13:13 +0200 | [diff] [blame] | 252 | /* use workqueue to have a small delay */ |
Marcel Holtmann | 3f53069 | 2006-10-15 17:31:19 +0200 | [diff] [blame] | 253 | schedule_work(&data->work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
| 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | static void bcm203x_disconnect(struct usb_interface *intf) |
| 259 | { |
| 260 | struct bcm203x_data *data = usb_get_intfdata(intf); |
| 261 | |
| 262 | BT_DBG("intf %p", intf); |
| 263 | |
David Herrmann | fc501ad | 2011-10-26 11:13:13 +0200 | [diff] [blame] | 264 | atomic_inc(&data->shutdown); |
| 265 | cancel_work_sync(&data->work); |
| 266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | usb_kill_urb(data->urb); |
| 268 | |
| 269 | usb_set_intfdata(intf, NULL); |
| 270 | |
| 271 | usb_free_urb(data->urb); |
| 272 | kfree(data->fw_data); |
| 273 | kfree(data->buffer); |
| 274 | kfree(data); |
| 275 | } |
| 276 | |
| 277 | static struct usb_driver bcm203x_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | .name = "bcm203x", |
| 279 | .probe = bcm203x_probe, |
| 280 | .disconnect = bcm203x_disconnect, |
| 281 | .id_table = bcm203x_table, |
| 282 | }; |
| 283 | |
Greg Kroah-Hartman | 93f1508 | 2011-11-18 09:47:34 -0800 | [diff] [blame] | 284 | module_usb_driver(bcm203x_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
| 287 | MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION); |
| 288 | MODULE_VERSION(VERSION); |
| 289 | MODULE_LICENSE("GPL"); |
Marcel Holtmann | 2312119 | 2007-02-17 23:59:02 +0100 | [diff] [blame] | 290 | MODULE_FIRMWARE("BCM2033-MD.hex"); |
| 291 | MODULE_FIRMWARE("BCM2033-FW.bin"); |