Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * | |
4 | * Broadcom Blutonium firmware driver | |
5 | * | |
6 | * Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | * Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org> | |
1da177e4 LT |
8 | */ |
9 | ||
1da177e4 LT |
10 | #include <linux/module.h> |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/errno.h> | |
1da177e4 LT |
17 | |
18 | #include <linux/device.h> | |
19 | #include <linux/firmware.h> | |
20 | ||
21 | #include <linux/usb.h> | |
22 | ||
23 | #include <net/bluetooth/bluetooth.h> | |
24 | ||
943d56b0 | 25 | #define VERSION "1.2" |
1da177e4 | 26 | |
8978111e | 27 | static const struct usb_device_id bcm203x_table[] = { |
1da177e4 LT |
28 | /* Broadcom Blutonium (BCM2033) */ |
29 | { USB_DEVICE(0x0a5c, 0x2033) }, | |
30 | ||
31 | { } /* Terminating entry */ | |
32 | }; | |
33 | ||
34 | MODULE_DEVICE_TABLE(usb, bcm203x_table); | |
35 | ||
36 | #define BCM203X_ERROR 0 | |
37 | #define BCM203X_RESET 1 | |
38 | #define BCM203X_LOAD_MINIDRV 2 | |
39 | #define BCM203X_SELECT_MEMORY 3 | |
40 | #define BCM203X_CHECK_MEMORY 4 | |
41 | #define BCM203X_LOAD_FIRMWARE 5 | |
42 | #define BCM203X_CHECK_FIRMWARE 6 | |
43 | ||
44 | #define BCM203X_IN_EP 0x81 | |
45 | #define BCM203X_OUT_EP 0x02 | |
46 | ||
47 | struct bcm203x_data { | |
48 | struct usb_device *udev; | |
49 | ||
50 | unsigned long state; | |
51 | ||
3f530692 | 52 | struct work_struct work; |
fc501ad7 | 53 | atomic_t shutdown; |
1da177e4 LT |
54 | |
55 | struct urb *urb; | |
56 | unsigned char *buffer; | |
57 | ||
58 | unsigned char *fw_data; | |
59 | unsigned int fw_size; | |
60 | unsigned int fw_sent; | |
61 | }; | |
62 | ||
7d12e780 | 63 | static void bcm203x_complete(struct urb *urb) |
1da177e4 LT |
64 | { |
65 | struct bcm203x_data *data = urb->context; | |
66 | struct usb_device *udev = urb->dev; | |
67 | int len; | |
68 | ||
69 | BT_DBG("udev %p urb %p", udev, urb); | |
70 | ||
71 | if (urb->status) { | |
72 | BT_ERR("URB failed with status %d", urb->status); | |
73 | data->state = BCM203X_ERROR; | |
74 | return; | |
75 | } | |
76 | ||
77 | switch (data->state) { | |
78 | case BCM203X_LOAD_MINIDRV: | |
79 | memcpy(data->buffer, "#", 1); | |
80 | ||
81 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
82 | data->buffer, 1, bcm203x_complete, data); | |
83 | ||
84 | data->state = BCM203X_SELECT_MEMORY; | |
85 | ||
fc501ad7 | 86 | /* use workqueue to have a small delay */ |
3f530692 | 87 | schedule_work(&data->work); |
1da177e4 LT |
88 | break; |
89 | ||
90 | case BCM203X_SELECT_MEMORY: | |
91 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), | |
92 | data->buffer, 32, bcm203x_complete, data, 1); | |
93 | ||
94 | data->state = BCM203X_CHECK_MEMORY; | |
95 | ||
96 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
97 | BT_ERR("Can't submit URB"); | |
98 | break; | |
99 | ||
100 | case BCM203X_CHECK_MEMORY: | |
101 | if (data->buffer[0] != '#') { | |
102 | BT_ERR("Memory select failed"); | |
103 | data->state = BCM203X_ERROR; | |
104 | break; | |
105 | } | |
106 | ||
107 | data->state = BCM203X_LOAD_FIRMWARE; | |
a3b4cbfc | 108 | fallthrough; |
1da177e4 LT |
109 | case BCM203X_LOAD_FIRMWARE: |
110 | if (data->fw_sent == data->fw_size) { | |
111 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), | |
112 | data->buffer, 32, bcm203x_complete, data, 1); | |
113 | ||
114 | data->state = BCM203X_CHECK_FIRMWARE; | |
115 | } else { | |
116 | len = min_t(uint, data->fw_size - data->fw_sent, 4096); | |
117 | ||
118 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
119 | data->fw_data + data->fw_sent, len, bcm203x_complete, data); | |
120 | ||
121 | data->fw_sent += len; | |
122 | } | |
123 | ||
124 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
125 | BT_ERR("Can't submit URB"); | |
126 | break; | |
127 | ||
128 | case BCM203X_CHECK_FIRMWARE: | |
129 | if (data->buffer[0] != '.') { | |
130 | BT_ERR("Firmware loading failed"); | |
131 | data->state = BCM203X_ERROR; | |
132 | break; | |
133 | } | |
134 | ||
135 | data->state = BCM203X_RESET; | |
136 | break; | |
137 | } | |
138 | } | |
139 | ||
c4028958 | 140 | static void bcm203x_work(struct work_struct *work) |
1da177e4 | 141 | { |
c4028958 DH |
142 | struct bcm203x_data *data = |
143 | container_of(work, struct bcm203x_data, work); | |
1da177e4 | 144 | |
fc501ad7 DH |
145 | if (atomic_read(&data->shutdown)) |
146 | return; | |
147 | ||
b91a4e3e | 148 | if (usb_submit_urb(data->urb, GFP_KERNEL) < 0) |
1da177e4 LT |
149 | BT_ERR("Can't submit URB"); |
150 | } | |
151 | ||
152 | static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
153 | { | |
154 | const struct firmware *firmware; | |
155 | struct usb_device *udev = interface_to_usbdev(intf); | |
156 | struct bcm203x_data *data; | |
157 | int size; | |
158 | ||
159 | BT_DBG("intf %p id %p", intf, id); | |
160 | ||
943d56b0 | 161 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) |
1da177e4 LT |
162 | return -ENODEV; |
163 | ||
9357cc60 | 164 | data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); |
17722e24 | 165 | if (!data) |
1da177e4 | 166 | return -ENOMEM; |
1da177e4 | 167 | |
1da177e4 LT |
168 | data->udev = udev; |
169 | data->state = BCM203X_LOAD_MINIDRV; | |
170 | ||
171 | data->urb = usb_alloc_urb(0, GFP_KERNEL); | |
a2f195a7 | 172 | if (!data->urb) |
1da177e4 | 173 | return -ENOMEM; |
1da177e4 LT |
174 | |
175 | if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) { | |
176 | BT_ERR("Mini driver request failed"); | |
177 | usb_free_urb(data->urb); | |
1da177e4 LT |
178 | return -EIO; |
179 | } | |
180 | ||
a418b893 | 181 | BT_DBG("minidrv data %p size %zu", firmware->data, firmware->size); |
1da177e4 LT |
182 | |
183 | size = max_t(uint, firmware->size, 4096); | |
184 | ||
185 | data->buffer = kmalloc(size, GFP_KERNEL); | |
186 | if (!data->buffer) { | |
187 | BT_ERR("Can't allocate memory for mini driver"); | |
188 | release_firmware(firmware); | |
189 | usb_free_urb(data->urb); | |
1da177e4 LT |
190 | return -ENOMEM; |
191 | } | |
192 | ||
193 | memcpy(data->buffer, firmware->data, firmware->size); | |
194 | ||
195 | usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
196 | data->buffer, firmware->size, bcm203x_complete, data); | |
197 | ||
198 | release_firmware(firmware); | |
199 | ||
200 | if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) { | |
201 | BT_ERR("Firmware request failed"); | |
202 | usb_free_urb(data->urb); | |
203 | kfree(data->buffer); | |
1da177e4 LT |
204 | return -EIO; |
205 | } | |
206 | ||
a418b893 | 207 | BT_DBG("firmware data %p size %zu", firmware->data, firmware->size); |
1da177e4 | 208 | |
5ee283c0 | 209 | data->fw_data = kmemdup(firmware->data, firmware->size, GFP_KERNEL); |
1da177e4 LT |
210 | if (!data->fw_data) { |
211 | BT_ERR("Can't allocate memory for firmware image"); | |
73ca66b9 | 212 | release_firmware(firmware); |
1da177e4 LT |
213 | usb_free_urb(data->urb); |
214 | kfree(data->buffer); | |
1da177e4 LT |
215 | return -ENOMEM; |
216 | } | |
217 | ||
1da177e4 LT |
218 | data->fw_size = firmware->size; |
219 | data->fw_sent = 0; | |
220 | ||
221 | release_firmware(firmware); | |
222 | ||
c4028958 | 223 | INIT_WORK(&data->work, bcm203x_work); |
1da177e4 LT |
224 | |
225 | usb_set_intfdata(intf, data); | |
226 | ||
fc501ad7 | 227 | /* use workqueue to have a small delay */ |
3f530692 | 228 | schedule_work(&data->work); |
1da177e4 LT |
229 | |
230 | return 0; | |
231 | } | |
232 | ||
233 | static void bcm203x_disconnect(struct usb_interface *intf) | |
234 | { | |
235 | struct bcm203x_data *data = usb_get_intfdata(intf); | |
236 | ||
237 | BT_DBG("intf %p", intf); | |
238 | ||
fc501ad7 DH |
239 | atomic_inc(&data->shutdown); |
240 | cancel_work_sync(&data->work); | |
241 | ||
1da177e4 LT |
242 | usb_kill_urb(data->urb); |
243 | ||
244 | usb_set_intfdata(intf, NULL); | |
245 | ||
246 | usb_free_urb(data->urb); | |
247 | kfree(data->fw_data); | |
248 | kfree(data->buffer); | |
1da177e4 LT |
249 | } |
250 | ||
251 | static struct usb_driver bcm203x_driver = { | |
1da177e4 LT |
252 | .name = "bcm203x", |
253 | .probe = bcm203x_probe, | |
254 | .disconnect = bcm203x_disconnect, | |
255 | .id_table = bcm203x_table, | |
e1f12eb6 | 256 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
257 | }; |
258 | ||
93f1508c | 259 | module_usb_driver(bcm203x_driver); |
1da177e4 | 260 | |
1da177e4 LT |
261 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
262 | MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION); | |
263 | MODULE_VERSION(VERSION); | |
264 | MODULE_LICENSE("GPL"); | |
2312119a MH |
265 | MODULE_FIRMWARE("BCM2033-MD.hex"); |
266 | MODULE_FIRMWARE("BCM2033-FW.bin"); |