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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 | ||
fc501ad7 | 27 | #include <linux/atomic.h> |
1da177e4 LT |
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> | |
1da177e4 LT |
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 | ||
943d56b0 | 41 | #define VERSION "1.2" |
1da177e4 | 42 | |
8978111e | 43 | static const struct usb_device_id bcm203x_table[] = { |
1da177e4 LT |
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 | ||
3f530692 | 68 | struct work_struct work; |
fc501ad7 | 69 | atomic_t shutdown; |
1da177e4 LT |
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 | ||
7d12e780 | 79 | static void bcm203x_complete(struct urb *urb) |
1da177e4 LT |
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 | ||
fc501ad7 | 102 | /* use workqueue to have a small delay */ |
3f530692 | 103 | schedule_work(&data->work); |
1da177e4 LT |
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 | ||
c4028958 | 156 | static void bcm203x_work(struct work_struct *work) |
1da177e4 | 157 | { |
c4028958 DH |
158 | struct bcm203x_data *data = |
159 | container_of(work, struct bcm203x_data, work); | |
1da177e4 | 160 | |
fc501ad7 DH |
161 | if (atomic_read(&data->shutdown)) |
162 | return; | |
163 | ||
b91a4e3e | 164 | if (usb_submit_urb(data->urb, GFP_KERNEL) < 0) |
1da177e4 LT |
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 | ||
943d56b0 | 177 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) |
1da177e4 LT |
178 | return -ENODEV; |
179 | ||
089b1dbb | 180 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
1da177e4 LT |
181 | if (!data) { |
182 | BT_ERR("Can't allocate memory for data structure"); | |
183 | return -ENOMEM; | |
184 | } | |
185 | ||
1da177e4 LT |
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 | ||
a418b893 | 203 | BT_DBG("minidrv data %p size %zu", firmware->data, firmware->size); |
1da177e4 LT |
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 | ||
a418b893 | 231 | BT_DBG("firmware data %p size %zu", firmware->data, firmware->size); |
1da177e4 | 232 | |
5ee283c0 | 233 | data->fw_data = kmemdup(firmware->data, firmware->size, GFP_KERNEL); |
1da177e4 LT |
234 | if (!data->fw_data) { |
235 | BT_ERR("Can't allocate memory for firmware image"); | |
73ca66b9 | 236 | release_firmware(firmware); |
1da177e4 LT |
237 | usb_free_urb(data->urb); |
238 | kfree(data->buffer); | |
239 | kfree(data); | |
240 | return -ENOMEM; | |
241 | } | |
242 | ||
1da177e4 LT |
243 | data->fw_size = firmware->size; |
244 | data->fw_sent = 0; | |
245 | ||
246 | release_firmware(firmware); | |
247 | ||
c4028958 | 248 | INIT_WORK(&data->work, bcm203x_work); |
1da177e4 LT |
249 | |
250 | usb_set_intfdata(intf, data); | |
251 | ||
fc501ad7 | 252 | /* use workqueue to have a small delay */ |
3f530692 | 253 | schedule_work(&data->work); |
1da177e4 LT |
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 | ||
fc501ad7 DH |
264 | atomic_inc(&data->shutdown); |
265 | cancel_work_sync(&data->work); | |
266 | ||
1da177e4 LT |
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, | |
e1f12eb6 | 282 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
283 | }; |
284 | ||
93f1508c | 285 | module_usb_driver(bcm203x_driver); |
1da177e4 | 286 | |
1da177e4 LT |
287 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
288 | MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION); | |
289 | MODULE_VERSION(VERSION); | |
290 | MODULE_LICENSE("GPL"); | |
2312119a MH |
291 | MODULE_FIRMWARE("BCM2033-MD.hex"); |
292 | MODULE_FIRMWARE("BCM2033-FW.bin"); |