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1da177e4 LT |
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 | ||
25 | #include <linux/config.h> | |
26 | #include <linux/module.h> | |
27 | ||
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> | |
33 | #include <linux/timer.h> | |
34 | ||
35 | #include <linux/device.h> | |
36 | #include <linux/firmware.h> | |
37 | ||
38 | #include <linux/usb.h> | |
39 | ||
40 | #include <net/bluetooth/bluetooth.h> | |
41 | ||
42 | #ifndef CONFIG_BT_HCIBCM203X_DEBUG | |
43 | #undef BT_DBG | |
44 | #define BT_DBG(D...) | |
45 | #endif | |
46 | ||
47 | #define VERSION "1.0" | |
48 | ||
49 | static int ignore = 0; | |
50 | ||
51 | static struct usb_device_id bcm203x_table[] = { | |
52 | /* Broadcom Blutonium (BCM2033) */ | |
53 | { USB_DEVICE(0x0a5c, 0x2033) }, | |
54 | ||
55 | { } /* Terminating entry */ | |
56 | }; | |
57 | ||
58 | MODULE_DEVICE_TABLE(usb, bcm203x_table); | |
59 | ||
60 | #define BCM203X_ERROR 0 | |
61 | #define BCM203X_RESET 1 | |
62 | #define BCM203X_LOAD_MINIDRV 2 | |
63 | #define BCM203X_SELECT_MEMORY 3 | |
64 | #define BCM203X_CHECK_MEMORY 4 | |
65 | #define BCM203X_LOAD_FIRMWARE 5 | |
66 | #define BCM203X_CHECK_FIRMWARE 6 | |
67 | ||
68 | #define BCM203X_IN_EP 0x81 | |
69 | #define BCM203X_OUT_EP 0x02 | |
70 | ||
71 | struct bcm203x_data { | |
72 | struct usb_device *udev; | |
73 | ||
74 | unsigned long state; | |
75 | ||
76 | struct timer_list timer; | |
77 | ||
78 | struct urb *urb; | |
79 | unsigned char *buffer; | |
80 | ||
81 | unsigned char *fw_data; | |
82 | unsigned int fw_size; | |
83 | unsigned int fw_sent; | |
84 | }; | |
85 | ||
86 | static void bcm203x_complete(struct urb *urb, struct pt_regs *regs) | |
87 | { | |
88 | struct bcm203x_data *data = urb->context; | |
89 | struct usb_device *udev = urb->dev; | |
90 | int len; | |
91 | ||
92 | BT_DBG("udev %p urb %p", udev, urb); | |
93 | ||
94 | if (urb->status) { | |
95 | BT_ERR("URB failed with status %d", urb->status); | |
96 | data->state = BCM203X_ERROR; | |
97 | return; | |
98 | } | |
99 | ||
100 | switch (data->state) { | |
101 | case BCM203X_LOAD_MINIDRV: | |
102 | memcpy(data->buffer, "#", 1); | |
103 | ||
104 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
105 | data->buffer, 1, bcm203x_complete, data); | |
106 | ||
107 | data->state = BCM203X_SELECT_MEMORY; | |
108 | ||
109 | mod_timer(&data->timer, jiffies + (HZ / 10)); | |
110 | break; | |
111 | ||
112 | case BCM203X_SELECT_MEMORY: | |
113 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), | |
114 | data->buffer, 32, bcm203x_complete, data, 1); | |
115 | ||
116 | data->state = BCM203X_CHECK_MEMORY; | |
117 | ||
118 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
119 | BT_ERR("Can't submit URB"); | |
120 | break; | |
121 | ||
122 | case BCM203X_CHECK_MEMORY: | |
123 | if (data->buffer[0] != '#') { | |
124 | BT_ERR("Memory select failed"); | |
125 | data->state = BCM203X_ERROR; | |
126 | break; | |
127 | } | |
128 | ||
129 | data->state = BCM203X_LOAD_FIRMWARE; | |
130 | ||
131 | case BCM203X_LOAD_FIRMWARE: | |
132 | if (data->fw_sent == data->fw_size) { | |
133 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), | |
134 | data->buffer, 32, bcm203x_complete, data, 1); | |
135 | ||
136 | data->state = BCM203X_CHECK_FIRMWARE; | |
137 | } else { | |
138 | len = min_t(uint, data->fw_size - data->fw_sent, 4096); | |
139 | ||
140 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
141 | data->fw_data + data->fw_sent, len, bcm203x_complete, data); | |
142 | ||
143 | data->fw_sent += len; | |
144 | } | |
145 | ||
146 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
147 | BT_ERR("Can't submit URB"); | |
148 | break; | |
149 | ||
150 | case BCM203X_CHECK_FIRMWARE: | |
151 | if (data->buffer[0] != '.') { | |
152 | BT_ERR("Firmware loading failed"); | |
153 | data->state = BCM203X_ERROR; | |
154 | break; | |
155 | } | |
156 | ||
157 | data->state = BCM203X_RESET; | |
158 | break; | |
159 | } | |
160 | } | |
161 | ||
162 | static void bcm203x_timer(unsigned long user_data) | |
163 | { | |
164 | struct bcm203x_data *data = (struct bcm203x_data *) user_data; | |
165 | ||
166 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
167 | BT_ERR("Can't submit URB"); | |
168 | } | |
169 | ||
170 | static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
171 | { | |
172 | const struct firmware *firmware; | |
173 | struct usb_device *udev = interface_to_usbdev(intf); | |
174 | struct bcm203x_data *data; | |
175 | int size; | |
176 | ||
177 | BT_DBG("intf %p id %p", intf, id); | |
178 | ||
179 | if (ignore || (intf->cur_altsetting->desc.bInterfaceNumber != 0)) | |
180 | return -ENODEV; | |
181 | ||
089b1dbb | 182 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
1da177e4 LT |
183 | if (!data) { |
184 | BT_ERR("Can't allocate memory for data structure"); | |
185 | return -ENOMEM; | |
186 | } | |
187 | ||
1da177e4 LT |
188 | data->udev = udev; |
189 | data->state = BCM203X_LOAD_MINIDRV; | |
190 | ||
191 | data->urb = usb_alloc_urb(0, GFP_KERNEL); | |
192 | if (!data->urb) { | |
193 | BT_ERR("Can't allocate URB"); | |
194 | kfree(data); | |
195 | return -ENOMEM; | |
196 | } | |
197 | ||
198 | if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) { | |
199 | BT_ERR("Mini driver request failed"); | |
200 | usb_free_urb(data->urb); | |
201 | kfree(data); | |
202 | return -EIO; | |
203 | } | |
204 | ||
205 | BT_DBG("minidrv data %p size %d", firmware->data, firmware->size); | |
206 | ||
207 | size = max_t(uint, firmware->size, 4096); | |
208 | ||
209 | data->buffer = kmalloc(size, GFP_KERNEL); | |
210 | if (!data->buffer) { | |
211 | BT_ERR("Can't allocate memory for mini driver"); | |
212 | release_firmware(firmware); | |
213 | usb_free_urb(data->urb); | |
214 | kfree(data); | |
215 | return -ENOMEM; | |
216 | } | |
217 | ||
218 | memcpy(data->buffer, firmware->data, firmware->size); | |
219 | ||
220 | usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
221 | data->buffer, firmware->size, bcm203x_complete, data); | |
222 | ||
223 | release_firmware(firmware); | |
224 | ||
225 | if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) { | |
226 | BT_ERR("Firmware request failed"); | |
227 | usb_free_urb(data->urb); | |
228 | kfree(data->buffer); | |
229 | kfree(data); | |
230 | return -EIO; | |
231 | } | |
232 | ||
233 | BT_DBG("firmware data %p size %d", firmware->data, firmware->size); | |
234 | ||
235 | data->fw_data = kmalloc(firmware->size, GFP_KERNEL); | |
236 | if (!data->fw_data) { | |
237 | BT_ERR("Can't allocate memory for firmware image"); | |
238 | usb_free_urb(data->urb); | |
239 | kfree(data->buffer); | |
240 | kfree(data); | |
241 | return -ENOMEM; | |
242 | } | |
243 | ||
244 | memcpy(data->fw_data, firmware->data, firmware->size); | |
245 | data->fw_size = firmware->size; | |
246 | data->fw_sent = 0; | |
247 | ||
248 | release_firmware(firmware); | |
249 | ||
250 | init_timer(&data->timer); | |
251 | data->timer.function = bcm203x_timer; | |
252 | data->timer.data = (unsigned long) data; | |
253 | ||
254 | usb_set_intfdata(intf, data); | |
255 | ||
256 | mod_timer(&data->timer, jiffies + HZ); | |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
261 | static void bcm203x_disconnect(struct usb_interface *intf) | |
262 | { | |
263 | struct bcm203x_data *data = usb_get_intfdata(intf); | |
264 | ||
265 | BT_DBG("intf %p", intf); | |
266 | ||
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 = { | |
1da177e4 LT |
278 | .name = "bcm203x", |
279 | .probe = bcm203x_probe, | |
280 | .disconnect = bcm203x_disconnect, | |
281 | .id_table = bcm203x_table, | |
282 | }; | |
283 | ||
284 | static int __init bcm203x_init(void) | |
285 | { | |
286 | int err; | |
287 | ||
288 | BT_INFO("Broadcom Blutonium firmware driver ver %s", VERSION); | |
289 | ||
290 | err = usb_register(&bcm203x_driver); | |
291 | if (err < 0) | |
292 | BT_ERR("Failed to register USB driver"); | |
293 | ||
294 | return err; | |
295 | } | |
296 | ||
297 | static void __exit bcm203x_exit(void) | |
298 | { | |
299 | usb_deregister(&bcm203x_driver); | |
300 | } | |
301 | ||
302 | module_init(bcm203x_init); | |
303 | module_exit(bcm203x_exit); | |
304 | ||
305 | module_param(ignore, bool, 0644); | |
306 | MODULE_PARM_DESC(ignore, "Ignore devices from the matching table"); | |
307 | ||
308 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
309 | MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION); | |
310 | MODULE_VERSION(VERSION); | |
311 | MODULE_LICENSE("GPL"); |