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95ea3627 | 1 | /* |
811aa9ca | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
95ea3627 ID |
3 | <http://rt2x00.serialmonkey.com> |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the | |
17 | Free Software Foundation, Inc., | |
18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | /* | |
22 | Module: rt2x00usb | |
23 | Abstract: Data structures for the rt2x00usb module. | |
24 | */ | |
25 | ||
26 | #ifndef RT2X00USB_H | |
27 | #define RT2X00USB_H | |
28 | ||
c1d35dfa ID |
29 | #define to_usb_device_intf(d) \ |
30 | ({ \ | |
31 | struct usb_interface *intf = to_usb_interface(d); \ | |
32 | interface_to_usbdev(intf); \ | |
33 | }) | |
34 | ||
95ea3627 ID |
35 | /* |
36 | * This variable should be used with the | |
37 | * usb_driver structure initialization. | |
38 | */ | |
39 | #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops) | |
40 | ||
41 | /* | |
42 | * Register defines. | |
43 | * Some registers require multiple attempts before success, | |
44 | * in those cases REGISTER_BUSY_COUNT attempts should be | |
45 | * taken with a REGISTER_BUSY_DELAY interval. | |
46 | * For USB vendor requests we need to pass a timeout | |
47 | * time in ms, for this we use the REGISTER_TIMEOUT, | |
48 | * however when loading firmware a higher value is | |
49 | * required. In that case we use the REGISTER_TIMEOUT_FIRMWARE. | |
50 | */ | |
51 | #define REGISTER_BUSY_COUNT 5 | |
52 | #define REGISTER_BUSY_DELAY 100 | |
e9136550 | 53 | #define REGISTER_TIMEOUT 500 |
95ea3627 ID |
54 | #define REGISTER_TIMEOUT_FIRMWARE 1000 |
55 | ||
bd394a74 ID |
56 | /** |
57 | * REGISTER_TIMEOUT16 - Determine the timeout for 16bit register access | |
58 | * @__datalen: Data length | |
59 | */ | |
60 | #define REGISTER_TIMEOUT16(__datalen) \ | |
61 | ( REGISTER_TIMEOUT * ((__datalen) / sizeof(u16)) ) | |
62 | ||
63 | /** | |
64 | * REGISTER_TIMEOUT32 - Determine the timeout for 32bit register access | |
65 | * @__datalen: Data length | |
66 | */ | |
67 | #define REGISTER_TIMEOUT32(__datalen) \ | |
68 | ( REGISTER_TIMEOUT * ((__datalen) / sizeof(u32)) ) | |
69 | ||
95ea3627 ID |
70 | /* |
71 | * Cache size | |
72 | */ | |
ed0dbeeb | 73 | #define CSR_CACHE_SIZE 64 |
95ea3627 ID |
74 | |
75 | /* | |
76 | * USB request types. | |
77 | */ | |
78 | #define USB_VENDOR_REQUEST ( USB_TYPE_VENDOR | USB_RECIP_DEVICE ) | |
79 | #define USB_VENDOR_REQUEST_IN ( USB_DIR_IN | USB_VENDOR_REQUEST ) | |
80 | #define USB_VENDOR_REQUEST_OUT ( USB_DIR_OUT | USB_VENDOR_REQUEST ) | |
81 | ||
3b640f21 ID |
82 | /** |
83 | * enum rt2x00usb_vendor_request: USB vendor commands. | |
95ea3627 | 84 | */ |
3b640f21 ID |
85 | enum rt2x00usb_vendor_request { |
86 | USB_DEVICE_MODE = 1, | |
87 | USB_SINGLE_WRITE = 2, | |
88 | USB_SINGLE_READ = 3, | |
89 | USB_MULTI_WRITE = 6, | |
90 | USB_MULTI_READ = 7, | |
91 | USB_EEPROM_WRITE = 8, | |
92 | USB_EEPROM_READ = 9, | |
93 | USB_LED_CONTROL = 10, /* RT73USB */ | |
94 | USB_RX_CONTROL = 12, | |
95 | }; | |
96 | ||
97 | /** | |
98 | * enum rt2x00usb_mode_offset: Device modes offset. | |
99 | */ | |
100 | enum rt2x00usb_mode_offset { | |
101 | USB_MODE_RESET = 1, | |
102 | USB_MODE_UNPLUG = 2, | |
103 | USB_MODE_FUNCTION = 3, | |
104 | USB_MODE_TEST = 4, | |
105 | USB_MODE_SLEEP = 7, /* RT73USB */ | |
106 | USB_MODE_FIRMWARE = 8, /* RT73USB */ | |
107 | USB_MODE_WAKEUP = 9, /* RT73USB */ | |
108 | }; | |
109 | ||
110 | /** | |
111 | * rt2x00usb_vendor_request - Send register command to device | |
112 | * @rt2x00dev: Pointer to &struct rt2x00_dev | |
113 | * @request: USB vendor command (See &enum rt2x00usb_vendor_request) | |
114 | * @requesttype: Request type &USB_VENDOR_REQUEST_* | |
115 | * @offset: Register offset to perform action on | |
116 | * @value: Value to write to device | |
117 | * @buffer: Buffer where information will be read/written to by device | |
118 | * @buffer_length: Size of &buffer | |
119 | * @timeout: Operation timeout | |
120 | * | |
95ea3627 | 121 | * This is the main function to communicate with the device, |
3b640f21 | 122 | * the &buffer argument _must_ either be NULL or point to |
95ea3627 ID |
123 | * a buffer allocated by kmalloc. Failure to do so can lead |
124 | * to unexpected behavior depending on the architecture. | |
125 | */ | |
0e14f6d3 | 126 | int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
127 | const u8 request, const u8 requesttype, |
128 | const u16 offset, const u16 value, | |
129 | void *buffer, const u16 buffer_length, | |
e9136550 | 130 | const int timeout); |
95ea3627 | 131 | |
3b640f21 ID |
132 | /** |
133 | * rt2x00usb_vendor_request_buff - Send register command to device (buffered) | |
134 | * @rt2x00dev: Pointer to &struct rt2x00_dev | |
135 | * @request: USB vendor command (See &enum rt2x00usb_vendor_request) | |
136 | * @requesttype: Request type &USB_VENDOR_REQUEST_* | |
137 | * @offset: Register offset to perform action on | |
138 | * @buffer: Buffer where information will be read/written to by device | |
139 | * @buffer_length: Size of &buffer | |
140 | * @timeout: Operation timeout | |
141 | * | |
95ea3627 ID |
142 | * This function will use a previously with kmalloc allocated cache |
143 | * to communicate with the device. The contents of the buffer pointer | |
144 | * will be copied to this cache when writing, or read from the cache | |
145 | * when reading. | |
3b640f21 | 146 | * Buffers send to &rt2x00usb_vendor_request _must_ be allocated with |
95ea3627 ID |
147 | * kmalloc. Hence the reason for using a previously allocated cache |
148 | * which has been allocated properly. | |
149 | */ | |
0e14f6d3 | 150 | int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
151 | const u8 request, const u8 requesttype, |
152 | const u16 offset, void *buffer, | |
e9136550 | 153 | const u16 buffer_length, const int timeout); |
95ea3627 | 154 | |
3b640f21 ID |
155 | /** |
156 | * rt2x00usb_vendor_request_buff - Send register command to device (buffered) | |
157 | * @rt2x00dev: Pointer to &struct rt2x00_dev | |
158 | * @request: USB vendor command (See &enum rt2x00usb_vendor_request) | |
159 | * @requesttype: Request type &USB_VENDOR_REQUEST_* | |
160 | * @offset: Register offset to perform action on | |
161 | * @buffer: Buffer where information will be read/written to by device | |
162 | * @buffer_length: Size of &buffer | |
163 | * @timeout: Operation timeout | |
164 | * | |
165 | * A version of &rt2x00usb_vendor_request_buff which must be called | |
166 | * if the usb_cache_mutex is already held. | |
167 | */ | |
3d82346c AB |
168 | int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev, |
169 | const u8 request, const u8 requesttype, | |
170 | const u16 offset, void *buffer, | |
171 | const u16 buffer_length, const int timeout); | |
172 | ||
ed0dbeeb IM |
173 | /** |
174 | * rt2x00usb_vendor_request_large_buff - Send register command to device (buffered) | |
175 | * @rt2x00dev: Pointer to &struct rt2x00_dev | |
176 | * @request: USB vendor command (See &enum rt2x00usb_vendor_request) | |
177 | * @requesttype: Request type &USB_VENDOR_REQUEST_* | |
178 | * @offset: Register start offset to perform action on | |
179 | * @buffer: Buffer where information will be read/written to by device | |
180 | * @buffer_length: Size of &buffer | |
181 | * @timeout: Operation timeout | |
182 | * | |
183 | * This function is used to transfer register data in blocks larger | |
184 | * then CSR_CACHE_SIZE. Use for firmware upload, keys and beacons. | |
185 | */ | |
186 | int rt2x00usb_vendor_request_large_buff(struct rt2x00_dev *rt2x00dev, | |
187 | const u8 request, const u8 requesttype, | |
82f97b8d | 188 | const u16 offset, const void *buffer, |
ed0dbeeb IM |
189 | const u16 buffer_length, |
190 | const int timeout); | |
191 | ||
3b640f21 ID |
192 | /** |
193 | * rt2x00usb_vendor_request_sw - Send single register command to device | |
194 | * @rt2x00dev: Pointer to &struct rt2x00_dev | |
195 | * @request: USB vendor command (See &enum rt2x00usb_vendor_request) | |
196 | * @offset: Register offset to perform action on | |
197 | * @value: Value to write to device | |
198 | * @timeout: Operation timeout | |
199 | * | |
95ea3627 ID |
200 | * Simple wrapper around rt2x00usb_vendor_request to write a single |
201 | * command to the device. Since we don't use the buffer argument we | |
202 | * don't have to worry about kmalloc here. | |
203 | */ | |
0e14f6d3 | 204 | static inline int rt2x00usb_vendor_request_sw(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
205 | const u8 request, |
206 | const u16 offset, | |
207 | const u16 value, | |
e9136550 | 208 | const int timeout) |
95ea3627 ID |
209 | { |
210 | return rt2x00usb_vendor_request(rt2x00dev, request, | |
211 | USB_VENDOR_REQUEST_OUT, offset, | |
212 | value, NULL, 0, timeout); | |
213 | } | |
214 | ||
3b640f21 ID |
215 | /** |
216 | * rt2x00usb_eeprom_read - Read eeprom from device | |
217 | * @rt2x00dev: Pointer to &struct rt2x00_dev | |
218 | * @eeprom: Pointer to eeprom array to store the information in | |
219 | * @length: Number of bytes to read from the eeprom | |
220 | * | |
95ea3627 ID |
221 | * Simple wrapper around rt2x00usb_vendor_request to read the eeprom |
222 | * from the device. Note that the eeprom argument _must_ be allocated using | |
223 | * kmalloc for correct handling inside the kernel USB layer. | |
224 | */ | |
0e14f6d3 | 225 | static inline int rt2x00usb_eeprom_read(struct rt2x00_dev *rt2x00dev, |
9a46d44e | 226 | __le16 *eeprom, const u16 length) |
95ea3627 | 227 | { |
95ea3627 | 228 | return rt2x00usb_vendor_request(rt2x00dev, USB_EEPROM_READ, |
3b640f21 | 229 | USB_VENDOR_REQUEST_IN, 0, 0, |
9a46d44e ID |
230 | eeprom, length, |
231 | REGISTER_TIMEOUT16(length)); | |
95ea3627 ID |
232 | } |
233 | ||
234 | /* | |
235 | * Radio handlers | |
236 | */ | |
95ea3627 ID |
237 | void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev); |
238 | ||
6db3786a ID |
239 | /** |
240 | * rt2x00usb_write_tx_data - Initialize URB for TX operation | |
241 | * @entry: The entry where the frame is located | |
242 | * | |
243 | * This function will initialize the URB and skb descriptor | |
244 | * to prepare the entry for the actual TX operation. | |
95ea3627 | 245 | */ |
6db3786a | 246 | int rt2x00usb_write_tx_data(struct queue_entry *entry); |
95ea3627 | 247 | |
181d6902 | 248 | /** |
b8be63ff | 249 | * struct queue_entry_priv_usb: Per entry USB specific information |
181d6902 ID |
250 | * |
251 | * @urb: Urb structure used for device communication. | |
181d6902 | 252 | */ |
b8be63ff | 253 | struct queue_entry_priv_usb { |
181d6902 | 254 | struct urb *urb; |
181d6902 ID |
255 | }; |
256 | ||
257 | /** | |
b8be63ff | 258 | * struct queue_entry_priv_usb_bcn: Per TX entry USB specific information |
181d6902 | 259 | * |
b8be63ff | 260 | * The first section should match &struct queue_entry_priv_usb exactly. |
181d6902 ID |
261 | * rt2500usb can use this structure to send a guardian byte when working |
262 | * with beacons. | |
263 | * | |
264 | * @urb: Urb structure used for device communication. | |
181d6902 ID |
265 | * @guardian_data: Set to 0, used for sending the guardian data. |
266 | * @guardian_urb: Urb structure used to send the guardian data. | |
267 | */ | |
268 | struct queue_entry_priv_usb_bcn { | |
269 | struct urb *urb; | |
270 | ||
181d6902 ID |
271 | unsigned int guardian_data; |
272 | struct urb *guardian_urb; | |
273 | }; | |
274 | ||
f019d514 ID |
275 | /** |
276 | * rt2x00usb_kick_tx_queue - Kick data queue | |
277 | * @rt2x00dev: Pointer to &struct rt2x00_dev | |
278 | * @qid: Data queue to kick | |
279 | * | |
280 | * This will walk through all entries of the queue and push all pending | |
281 | * frames to the hardware as a single burst. | |
282 | */ | |
283 | void rt2x00usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev, | |
284 | const enum data_queue_qid qid); | |
285 | ||
95ea3627 ID |
286 | /* |
287 | * Device initialization handlers. | |
288 | */ | |
798b7adb | 289 | void rt2x00usb_clear_entry(struct queue_entry *entry); |
95ea3627 ID |
290 | int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev); |
291 | void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev); | |
292 | ||
293 | /* | |
294 | * USB driver handlers. | |
295 | */ | |
296 | int rt2x00usb_probe(struct usb_interface *usb_intf, | |
297 | const struct usb_device_id *id); | |
298 | void rt2x00usb_disconnect(struct usb_interface *usb_intf); | |
299 | #ifdef CONFIG_PM | |
300 | int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state); | |
301 | int rt2x00usb_resume(struct usb_interface *usb_intf); | |
302 | #else | |
303 | #define rt2x00usb_suspend NULL | |
304 | #define rt2x00usb_resume NULL | |
305 | #endif /* CONFIG_PM */ | |
306 | ||
307 | #endif /* RT2X00USB_H */ |