summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/rt2x00/rt2x00usb.h
blob: d4113e5158f0a5eeff5a14a1995e85226b1f94f6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
/*
	Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
	<http://rt2x00.serialmonkey.com>

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the
	Free Software Foundation, Inc.,
	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

/*
	Module: rt2x00usb
	Abstract: Data structures for the rt2x00usb module.
 */

#ifndef RT2X00USB_H
#define RT2X00USB_H

/*
 * This variable should be used with the
 * usb_driver structure initialization.
 */
#define USB_DEVICE_DATA(__ops)	.driver_info = (kernel_ulong_t)(__ops)

/*
 * Register defines.
 * Some registers require multiple attempts before success,
 * in those cases REGISTER_BUSY_COUNT attempts should be
 * taken with a REGISTER_BUSY_DELAY interval.
 * For USB vendor requests we need to pass a timeout
 * time in ms, for this we use the REGISTER_TIMEOUT,
 * however when loading firmware a higher value is
 * required. In that case we use the REGISTER_TIMEOUT_FIRMWARE.
 */
#define REGISTER_BUSY_COUNT		5
#define REGISTER_BUSY_DELAY		100
#define REGISTER_TIMEOUT		20
#define REGISTER_TIMEOUT_FIRMWARE	1000

/*
 * Cache size
 */
#define CSR_CACHE_SIZE			8
#define CSR_CACHE_SIZE_FIRMWARE		64

/*
 * USB request types.
 */
#define USB_VENDOR_REQUEST	( USB_TYPE_VENDOR | USB_RECIP_DEVICE )
#define USB_VENDOR_REQUEST_IN	( USB_DIR_IN | USB_VENDOR_REQUEST )
#define USB_VENDOR_REQUEST_OUT	( USB_DIR_OUT | USB_VENDOR_REQUEST )

/*
 * USB vendor commands.
 */
#define USB_DEVICE_MODE		0x01
#define USB_SINGLE_WRITE	0x02
#define USB_SINGLE_READ		0x03
#define USB_MULTI_WRITE		0x06
#define USB_MULTI_READ		0x07
#define USB_EEPROM_WRITE	0x08
#define USB_EEPROM_READ		0x09
#define USB_LED_CONTROL		0x0a	/* RT73USB */
#define USB_RX_CONTROL		0x0c

/*
 * Device modes offset
 */
#define USB_MODE_RESET		0x01
#define USB_MODE_UNPLUG		0x02
#define USB_MODE_FUNCTION	0x03
#define USB_MODE_TEST		0x04
#define USB_MODE_SLEEP		0x07	/* RT73USB */
#define USB_MODE_FIRMWARE	0x08	/* RT73USB */
#define USB_MODE_WAKEUP		0x09	/* RT73USB */

/*
 * Used to read/write from/to the device.
 * This is the main function to communicate with the device,
 * the buffer argument _must_ either be NULL or point to
 * a buffer allocated by kmalloc. Failure to do so can lead
 * to unexpected behavior depending on the architecture.
 */
int rt2x00usb_vendor_request(const struct rt2x00_dev *rt2x00dev,
			     const u8 request, const u8 requesttype,
			     const u16 offset, const u16 value,
			     void *buffer, const u16 buffer_length,
			     u16 timeout);

/*
 * Used to read/write from/to the device.
 * This function will use a previously with kmalloc allocated cache
 * to communicate with the device. The contents of the buffer pointer
 * will be copied to this cache when writing, or read from the cache
 * when reading.
 * Buffers send to rt2x00usb_vendor_request _must_ be allocated with
 * kmalloc. Hence the reason for using a previously allocated cache
 * which has been allocated properly.
 */
int rt2x00usb_vendor_request_buff(const struct rt2x00_dev *rt2x00dev,
				  const u8 request, const u8 requesttype,
				  const u16 offset, void *buffer,
				  const u16 buffer_length, u16 timeout);

/*
 * Simple wrapper around rt2x00usb_vendor_request to write a single
 * command to the device. Since we don't use the buffer argument we
 * don't have to worry about kmalloc here.
 */
static inline int rt2x00usb_vendor_request_sw(const struct rt2x00_dev
					      *rt2x00dev,
					      const u8 request,
					      const u16 offset,
					      const u16 value,
					      int timeout)
{
	return rt2x00usb_vendor_request(rt2x00dev, request,
					USB_VENDOR_REQUEST_OUT, offset,
					value, NULL, 0, timeout);
}

/*
 * Simple wrapper around rt2x00usb_vendor_request to read the eeprom
 * from the device. Note that the eeprom argument _must_ be allocated using
 * kmalloc for correct handling inside the kernel USB layer.
 */
static inline int rt2x00usb_eeprom_read(const struct rt2x00_dev *rt2x00dev,
					 __le16 *eeprom, const u16 lenght)
{
	int timeout = REGISTER_TIMEOUT * (lenght / sizeof(u16));

	return rt2x00usb_vendor_request(rt2x00dev, USB_EEPROM_READ,
					USB_VENDOR_REQUEST_IN, 0x0000,
					0x0000, eeprom, lenght, timeout);
}

/*
 * Radio handlers
 */
void rt2x00usb_enable_radio(struct rt2x00_dev *rt2x00dev);
void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev);

/*
 * TX data handlers.
 */
int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
			    struct data_ring *ring, struct sk_buff *skb,
			    struct ieee80211_tx_control *control);

/*
 * Device initialization handlers.
 */
int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev);
void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev);

/*
 * USB driver handlers.
 */
int rt2x00usb_probe(struct usb_interface *usb_intf,
		    const struct usb_device_id *id);
void rt2x00usb_disconnect(struct usb_interface *usb_intf);
#ifdef CONFIG_PM
int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state);
int rt2x00usb_resume(struct usb_interface *usb_intf);
#else
#define rt2x00usb_suspend	NULL
#define rt2x00usb_resume	NULL
#endif /* CONFIG_PM */

#endif /* RT2X00USB_H */