aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/usb/ch11.h
blob: 38c42b013641bc69e0a5587e0aeeac3e3c864f3a (plain) (blame)
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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
/*
 * This file holds Hub protocol constants and data structures that are
 * defined in chapter 11 (Hub Specification) of the USB 2.0 specification.
 *
 * It is used/shared between the USB core, the HCDs and couple of other USB
 * drivers.
 */

#ifndef __LINUX_CH11_H
#define __LINUX_CH11_H

#include <linux/types.h>	/* __u8 etc */

/*
 * Hub request types
 */

#define USB_RT_HUB	(USB_TYPE_CLASS | USB_RECIP_DEVICE)
#define USB_RT_PORT	(USB_TYPE_CLASS | USB_RECIP_OTHER)

/*
 * Hub class requests
 * See USB 2.0 spec Table 11-16
 */
#define HUB_CLEAR_TT_BUFFER	8
#define HUB_RESET_TT		9
#define HUB_GET_TT_STATE	10
#define HUB_STOP_TT		11

/*
 * Hub class additional requests defined by USB 3.0 spec
 * See USB 3.0 spec Table 10-6
 */
#define HUB_SET_DEPTH		12
#define HUB_GET_PORT_ERR_COUNT	13

/*
 * Hub Class feature numbers
 * See USB 2.0 spec Table 11-17
 */
#define C_HUB_LOCAL_POWER	0
#define C_HUB_OVER_CURRENT	1

/*
 * Port feature numbers
 * See USB 2.0 spec Table 11-17
 */
#define USB_PORT_FEAT_CONNECTION	0
#define USB_PORT_FEAT_ENABLE		1
#define USB_PORT_FEAT_SUSPEND		2	/* L2 suspend */
#define USB_PORT_FEAT_OVER_CURRENT	3
#define USB_PORT_FEAT_RESET		4
#define USB_PORT_FEAT_L1		5	/* L1 suspend */
#define USB_PORT_FEAT_POWER		8
#define USB_PORT_FEAT_LOWSPEED		9	/* Should never be used */
#define USB_PORT_FEAT_C_CONNECTION	16
#define USB_PORT_FEAT_C_ENABLE		17
#define USB_PORT_FEAT_C_SUSPEND		18
#define USB_PORT_FEAT_C_OVER_CURRENT	19
#define USB_PORT_FEAT_C_RESET		20
#define USB_PORT_FEAT_TEST              21
#define USB_PORT_FEAT_INDICATOR         22
#define USB_PORT_FEAT_C_PORT_L1         23

/*
 * Port feature selectors added by USB 3.0 spec.
 * See USB 3.0 spec Table 10-7
 */
#define USB_PORT_FEAT_LINK_STATE		5
#define USB_PORT_FEAT_U1_TIMEOUT		23
#define USB_PORT_FEAT_U2_TIMEOUT		24
#define USB_PORT_FEAT_C_LINK_STATE		25
#define USB_PORT_FEAT_C_CONFIG_ERR		26
#define USB_PORT_FEAT_REMOTE_WAKE_MASK		27
#define USB_PORT_FEAT_BH_PORT_RESET		28
#define USB_PORT_FEAT_C_BH_PORT_RESET		29
#define USB_PORT_FEAT_FORCE_LINKPM_ACCEPT	30

/*
 * Hub Status and Hub Change results
 * See USB 2.0 spec Table 11-19 and Table 11-20
 */
struct usb_port_status {
	__le16 wPortStatus;
	__le16 wPortChange;
} __attribute__ ((packed));

/*
 * wPortStatus bit field
 * See USB 2.0 spec Table 11-21
 */
#define USB_PORT_STAT_CONNECTION	0x0001
#define USB_PORT_STAT_ENABLE		0x0002
#define USB_PORT_STAT_SUSPEND		0x0004
#define USB_PORT_STAT_OVERCURRENT	0x0008
#define USB_PORT_STAT_RESET		0x0010
#define USB_PORT_STAT_L1		0x0020
/* bits 6 to 7 are reserved */
#define USB_PORT_STAT_POWER		0x0100
#define USB_PORT_STAT_LOW_SPEED		0x0200
#define USB_PORT_STAT_HIGH_SPEED        0x0400
#define USB_PORT_STAT_TEST              0x0800
#define USB_PORT_STAT_INDICATOR         0x1000
/* bits 13 to 15 are reserved */
#define USB_PORT_STAT_SUPER_SPEED	0x8000	/* Linux-internal */

/*
 * Additions to wPortStatus bit field from USB 3.0
 * See USB 3.0 spec Table 10-10
 */
#define USB_PORT_STAT_LINK_STATE	0x01e0
#define USB_SS_PORT_STAT_POWER		0x0200
#define USB_PORT_STAT_SPEED_5GBPS	0x0000
/* Valid only if port is enabled */

/*
 * Definitions for PORT_LINK_STATE values
 * (bits 5-8) in wPortStatus
 */
#define USB_SS_PORT_LS_U0		0x0000
#define USB_SS_PORT_LS_U1		0x0020
#define USB_SS_PORT_LS_U2		0x0040
#define USB_SS_PORT_LS_U3		0x0060
#define USB_SS_PORT_LS_SS_DISABLED	0x0080
#define USB_SS_PORT_LS_RX_DETECT	0x00a0
#define USB_SS_PORT_LS_SS_INACTIVE	0x00c0
#define USB_SS_PORT_LS_POLLING		0x00e0
#define USB_SS_PORT_LS_RECOVERY		0x0100
#define USB_SS_PORT_LS_HOT_RESET	0x0120
#define USB_SS_PORT_LS_COMP_MOD		0x0140
#define USB_SS_PORT_LS_LOOPBACK		0x0160

/*
 * wPortChange bit field
 * See USB 2.0 spec Table 11-22 and USB 2.0 LPM ECN Table-4.10
 * Bits 0 to 5 shown, bits 6 to 15 are reserved
 */
#define USB_PORT_STAT_C_CONNECTION	0x0001
#define USB_PORT_STAT_C_ENABLE		0x0002
#define USB_PORT_STAT_C_SUSPEND		0x0004
#define USB_PORT_STAT_C_OVERCURRENT	0x0008
#define USB_PORT_STAT_C_RESET		0x0010
#define USB_PORT_STAT_C_L1		0x0020

/*
 * wHubCharacteristics (masks)
 * See USB 2.0 spec Table 11-13, offset 3
 */
#define HUB_CHAR_LPSM		0x0003 /* D1 .. D0 */
#define HUB_CHAR_COMPOUND	0x0004 /* D2       */
#define HUB_CHAR_OCPM		0x0018 /* D4 .. D3 */
#define HUB_CHAR_TTTT           0x0060 /* D6 .. D5 */
#define HUB_CHAR_PORTIND        0x0080 /* D7       */

struct usb_hub_status {
	__le16 wHubStatus;
	__le16 wHubChange;
} __attribute__ ((packed));

/*
 * Hub Status & Hub Change bit masks
 * See USB 2.0 spec Table 11-19 and Table 11-20
 * Bits 0 and 1 for wHubStatus and wHubChange
 * Bits 2 to 15 are reserved for both
 */
#define HUB_STATUS_LOCAL_POWER	0x0001
#define HUB_STATUS_OVERCURRENT	0x0002
#define HUB_CHANGE_LOCAL_POWER	0x0001
#define HUB_CHANGE_OVERCURRENT	0x0002


/*
 * Hub descriptor
 * See USB 2.0 spec Table 11-13
 */

#define USB_DT_HUB			(USB_TYPE_CLASS | 0x09)
#define USB_DT_HUB_NONVAR_SIZE		7

struct usb_hub_descriptor {
	__u8  bDescLength;
	__u8  bDescriptorType;
	__u8  bNbrPorts;
	__le16 wHubCharacteristics;
	__u8  bPwrOn2PwrGood;
	__u8  bHubContrCurrent;
		/* add 1 bit for hub status change; round to bytes */
	__u8  DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8];
	__u8  PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8];
} __attribute__ ((packed));


/* port indicator status selectors, tables 11-7 and 11-25 */
#define HUB_LED_AUTO	0
#define HUB_LED_AMBER	1
#define HUB_LED_GREEN	2
#define HUB_LED_OFF	3

enum hub_led_mode {
	INDICATOR_AUTO = 0,
	INDICATOR_CYCLE,
	/* software blinks for attention:  software, hardware, reserved */
	INDICATOR_GREEN_BLINK, INDICATOR_GREEN_BLINK_OFF,
	INDICATOR_AMBER_BLINK, INDICATOR_AMBER_BLINK_OFF,
	INDICATOR_ALT_BLINK, INDICATOR_ALT_BLINK_OFF
} __attribute__ ((packed));

/* Transaction Translator Think Times, in bits */
#define HUB_TTTT_8_BITS		0x00
#define HUB_TTTT_16_BITS	0x20
#define HUB_TTTT_24_BITS	0x40
#define HUB_TTTT_32_BITS	0x60

#endif /* __LINUX_CH11_H */