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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 | ||
1da177e4 LT |
25 | #include <linux/module.h> |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/types.h> | |
31 | #include <linux/errno.h> | |
1da177e4 LT |
32 | |
33 | #include <linux/device.h> | |
34 | #include <linux/firmware.h> | |
35 | ||
36 | #include <linux/usb.h> | |
37 | ||
38 | #include <net/bluetooth/bluetooth.h> | |
39 | ||
943d56b0 | 40 | #define VERSION "1.2" |
1da177e4 | 41 | |
8978111e | 42 | static const struct usb_device_id bcm203x_table[] = { |
1da177e4 LT |
43 | /* Broadcom Blutonium (BCM2033) */ |
44 | { USB_DEVICE(0x0a5c, 0x2033) }, | |
45 | ||
46 | { } /* Terminating entry */ | |
47 | }; | |
48 | ||
49 | MODULE_DEVICE_TABLE(usb, bcm203x_table); | |
50 | ||
51 | #define BCM203X_ERROR 0 | |
52 | #define BCM203X_RESET 1 | |
53 | #define BCM203X_LOAD_MINIDRV 2 | |
54 | #define BCM203X_SELECT_MEMORY 3 | |
55 | #define BCM203X_CHECK_MEMORY 4 | |
56 | #define BCM203X_LOAD_FIRMWARE 5 | |
57 | #define BCM203X_CHECK_FIRMWARE 6 | |
58 | ||
59 | #define BCM203X_IN_EP 0x81 | |
60 | #define BCM203X_OUT_EP 0x02 | |
61 | ||
62 | struct bcm203x_data { | |
63 | struct usb_device *udev; | |
64 | ||
65 | unsigned long state; | |
66 | ||
3f530692 | 67 | struct work_struct work; |
1da177e4 LT |
68 | |
69 | struct urb *urb; | |
70 | unsigned char *buffer; | |
71 | ||
72 | unsigned char *fw_data; | |
73 | unsigned int fw_size; | |
74 | unsigned int fw_sent; | |
75 | }; | |
76 | ||
7d12e780 | 77 | static void bcm203x_complete(struct urb *urb) |
1da177e4 LT |
78 | { |
79 | struct bcm203x_data *data = urb->context; | |
80 | struct usb_device *udev = urb->dev; | |
81 | int len; | |
82 | ||
83 | BT_DBG("udev %p urb %p", udev, urb); | |
84 | ||
85 | if (urb->status) { | |
86 | BT_ERR("URB failed with status %d", urb->status); | |
87 | data->state = BCM203X_ERROR; | |
88 | return; | |
89 | } | |
90 | ||
91 | switch (data->state) { | |
92 | case BCM203X_LOAD_MINIDRV: | |
93 | memcpy(data->buffer, "#", 1); | |
94 | ||
95 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
96 | data->buffer, 1, bcm203x_complete, data); | |
97 | ||
98 | data->state = BCM203X_SELECT_MEMORY; | |
99 | ||
3f530692 | 100 | schedule_work(&data->work); |
1da177e4 LT |
101 | break; |
102 | ||
103 | case BCM203X_SELECT_MEMORY: | |
104 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), | |
105 | data->buffer, 32, bcm203x_complete, data, 1); | |
106 | ||
107 | data->state = BCM203X_CHECK_MEMORY; | |
108 | ||
109 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
110 | BT_ERR("Can't submit URB"); | |
111 | break; | |
112 | ||
113 | case BCM203X_CHECK_MEMORY: | |
114 | if (data->buffer[0] != '#') { | |
115 | BT_ERR("Memory select failed"); | |
116 | data->state = BCM203X_ERROR; | |
117 | break; | |
118 | } | |
119 | ||
120 | data->state = BCM203X_LOAD_FIRMWARE; | |
121 | ||
122 | case BCM203X_LOAD_FIRMWARE: | |
123 | if (data->fw_sent == data->fw_size) { | |
124 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), | |
125 | data->buffer, 32, bcm203x_complete, data, 1); | |
126 | ||
127 | data->state = BCM203X_CHECK_FIRMWARE; | |
128 | } else { | |
129 | len = min_t(uint, data->fw_size - data->fw_sent, 4096); | |
130 | ||
131 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
132 | data->fw_data + data->fw_sent, len, bcm203x_complete, data); | |
133 | ||
134 | data->fw_sent += len; | |
135 | } | |
136 | ||
137 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
138 | BT_ERR("Can't submit URB"); | |
139 | break; | |
140 | ||
141 | case BCM203X_CHECK_FIRMWARE: | |
142 | if (data->buffer[0] != '.') { | |
143 | BT_ERR("Firmware loading failed"); | |
144 | data->state = BCM203X_ERROR; | |
145 | break; | |
146 | } | |
147 | ||
148 | data->state = BCM203X_RESET; | |
149 | break; | |
150 | } | |
151 | } | |
152 | ||
c4028958 | 153 | static void bcm203x_work(struct work_struct *work) |
1da177e4 | 154 | { |
c4028958 DH |
155 | struct bcm203x_data *data = |
156 | container_of(work, struct bcm203x_data, work); | |
1da177e4 LT |
157 | |
158 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
159 | BT_ERR("Can't submit URB"); | |
160 | } | |
161 | ||
162 | static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
163 | { | |
164 | const struct firmware *firmware; | |
165 | struct usb_device *udev = interface_to_usbdev(intf); | |
166 | struct bcm203x_data *data; | |
167 | int size; | |
168 | ||
169 | BT_DBG("intf %p id %p", intf, id); | |
170 | ||
943d56b0 | 171 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) |
1da177e4 LT |
172 | return -ENODEV; |
173 | ||
089b1dbb | 174 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
1da177e4 LT |
175 | if (!data) { |
176 | BT_ERR("Can't allocate memory for data structure"); | |
177 | return -ENOMEM; | |
178 | } | |
179 | ||
1da177e4 LT |
180 | data->udev = udev; |
181 | data->state = BCM203X_LOAD_MINIDRV; | |
182 | ||
183 | data->urb = usb_alloc_urb(0, GFP_KERNEL); | |
184 | if (!data->urb) { | |
185 | BT_ERR("Can't allocate URB"); | |
186 | kfree(data); | |
187 | return -ENOMEM; | |
188 | } | |
189 | ||
190 | if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) { | |
191 | BT_ERR("Mini driver request failed"); | |
192 | usb_free_urb(data->urb); | |
193 | kfree(data); | |
194 | return -EIO; | |
195 | } | |
196 | ||
a418b893 | 197 | BT_DBG("minidrv data %p size %zu", firmware->data, firmware->size); |
1da177e4 LT |
198 | |
199 | size = max_t(uint, firmware->size, 4096); | |
200 | ||
201 | data->buffer = kmalloc(size, GFP_KERNEL); | |
202 | if (!data->buffer) { | |
203 | BT_ERR("Can't allocate memory for mini driver"); | |
204 | release_firmware(firmware); | |
205 | usb_free_urb(data->urb); | |
206 | kfree(data); | |
207 | return -ENOMEM; | |
208 | } | |
209 | ||
210 | memcpy(data->buffer, firmware->data, firmware->size); | |
211 | ||
212 | usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
213 | data->buffer, firmware->size, bcm203x_complete, data); | |
214 | ||
215 | release_firmware(firmware); | |
216 | ||
217 | if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) { | |
218 | BT_ERR("Firmware request failed"); | |
219 | usb_free_urb(data->urb); | |
220 | kfree(data->buffer); | |
221 | kfree(data); | |
222 | return -EIO; | |
223 | } | |
224 | ||
a418b893 | 225 | BT_DBG("firmware data %p size %zu", firmware->data, firmware->size); |
1da177e4 LT |
226 | |
227 | data->fw_data = kmalloc(firmware->size, GFP_KERNEL); | |
228 | if (!data->fw_data) { | |
229 | BT_ERR("Can't allocate memory for firmware image"); | |
73ca66b9 | 230 | release_firmware(firmware); |
1da177e4 LT |
231 | usb_free_urb(data->urb); |
232 | kfree(data->buffer); | |
233 | kfree(data); | |
234 | return -ENOMEM; | |
235 | } | |
236 | ||
237 | memcpy(data->fw_data, firmware->data, firmware->size); | |
238 | data->fw_size = firmware->size; | |
239 | data->fw_sent = 0; | |
240 | ||
241 | release_firmware(firmware); | |
242 | ||
c4028958 | 243 | INIT_WORK(&data->work, bcm203x_work); |
1da177e4 LT |
244 | |
245 | usb_set_intfdata(intf, data); | |
246 | ||
3f530692 | 247 | schedule_work(&data->work); |
1da177e4 LT |
248 | |
249 | return 0; | |
250 | } | |
251 | ||
252 | static void bcm203x_disconnect(struct usb_interface *intf) | |
253 | { | |
254 | struct bcm203x_data *data = usb_get_intfdata(intf); | |
255 | ||
256 | BT_DBG("intf %p", intf); | |
257 | ||
258 | usb_kill_urb(data->urb); | |
259 | ||
260 | usb_set_intfdata(intf, NULL); | |
261 | ||
262 | usb_free_urb(data->urb); | |
263 | kfree(data->fw_data); | |
264 | kfree(data->buffer); | |
265 | kfree(data); | |
266 | } | |
267 | ||
268 | static struct usb_driver bcm203x_driver = { | |
1da177e4 LT |
269 | .name = "bcm203x", |
270 | .probe = bcm203x_probe, | |
271 | .disconnect = bcm203x_disconnect, | |
272 | .id_table = bcm203x_table, | |
273 | }; | |
274 | ||
275 | static int __init bcm203x_init(void) | |
276 | { | |
277 | int err; | |
278 | ||
279 | BT_INFO("Broadcom Blutonium firmware driver ver %s", VERSION); | |
280 | ||
281 | err = usb_register(&bcm203x_driver); | |
282 | if (err < 0) | |
283 | BT_ERR("Failed to register USB driver"); | |
284 | ||
285 | return err; | |
286 | } | |
287 | ||
288 | static void __exit bcm203x_exit(void) | |
289 | { | |
290 | usb_deregister(&bcm203x_driver); | |
291 | } | |
292 | ||
293 | module_init(bcm203x_init); | |
294 | module_exit(bcm203x_exit); | |
295 | ||
1da177e4 LT |
296 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
297 | MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION); | |
298 | MODULE_VERSION(VERSION); | |
299 | MODULE_LICENSE("GPL"); | |
2312119a MH |
300 | MODULE_FIRMWARE("BCM2033-MD.hex"); |
301 | MODULE_FIRMWARE("BCM2033-FW.bin"); |