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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 coresystems GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef __USB_H
#define __USB_H
#include <libpayload.h>
#include <pci.h>
typedef enum { host_to_device = 0, device_to_host = 1 } dev_req_dir;
typedef enum { standard_type = 0, class_type = 1, vendor_type =
2, reserved_type = 3
} dev_req_type;
typedef enum { dev_recp = 0, iface_recp = 1, endp_recp = 2, other_recp = 3
} dev_req_recp;
typedef enum {
GET_STATUS = 0,
CLEAR_FEATURE = 1,
SET_FEATURE = 3,
SET_ADDRESS = 5,
GET_DESCRIPTOR = 6,
SET_DESCRIPTOR = 7,
GET_CONFIGURATION = 8,
SET_CONFIGURATION = 9,
GET_INTERFACE = 10,
SET_INTERFACE = 11,
SYNCH_FRAME = 12
} bRequest_Codes;
typedef enum {
ENDPOINT_HALT = 0,
DEVICE_REMOTE_WAKEUP = 1,
TEST_MODE = 2
} feature_selectors;
typedef struct {
union {
struct {
dev_req_recp req_recp:5;
dev_req_type req_type:2;
dev_req_dir data_dir:1;
} __attribute__ ((packed));
unsigned char bmRequestType;
} __attribute__ ((packed));
unsigned char bRequest;
unsigned short wValue;
unsigned short wIndex;
unsigned short wLength;
} __attribute__ ((packed)) dev_req_t;
struct usbdev_hc;
typedef struct usbdev_hc hci_t;
struct usbdev;
typedef struct usbdev usbdev_t;
typedef enum { SETUP = 0x2d, IN = 0x69, OUT = 0xe1 } pid_t;
typedef enum { CONTROL = 0, ISOCHRONOUS = 1, BULK = 2, INTERRUPT = 3
} endpoint_type;
typedef struct {
usbdev_t *dev;
int endpoint;
pid_t direction;
int toggle;
int maxpacketsize;
endpoint_type type;
} endpoint_t;
struct usbdev {
hci_t *controller;
endpoint_t endpoints[32];
int num_endp;
int address; // usb address
int hub; // hub, device is attached to
int port; // port where device is attached
int lowspeed; // 1 if lowspeed device
void *data;
u8 *descriptor;
u8 *configuration;
void (*init) (usbdev_t *dev);
void (*destroy) (usbdev_t *dev);
void (*poll) (usbdev_t *dev);
};
struct usbdev_hc {
struct usbdev_hc *next;
pcidev_t bus_address;
u32 reg_base;
usbdev_t *devices[128]; // dev 0 is root hub, 127 is last addressable
void (*start) (hci_t *controller);
void (*stop) (hci_t *controller);
void (*reset) (hci_t *controller);
void (*shutdown) (hci_t *controller);
int (*packet) (usbdev_t *dev, int endp, int pid, int toggle,
int length, u8 *data);
int (*bulk) (endpoint_t *ep, int size, u8 *data, int finalize);
int (*control) (usbdev_t *dev, pid_t pid, int dr_length,
void *devreq, int data_length, u8 *data);
void* (*create_intr_queue) (endpoint_t *ep, int reqsize, int reqcount, int reqtiming);
void (*destroy_intr_queue) (endpoint_t *ep, void *queue);
u8* (*poll_intr_queue) (void *queue);
void *instance;
};
typedef struct {
unsigned char bDescLength;
unsigned char bDescriptorType;
unsigned char bNbrPorts;
union {
struct {
unsigned long logicalPowerSwitchingMode:2;
unsigned long isCompoundDevice:1;
unsigned long overcurrentProtectionMode:2;
unsigned long ttThinkTime:2;
unsigned long arePortIndicatorsSupported:1;
unsigned long:8;
} __attribute__ ((packed));
unsigned short wHubCharacteristics;
} __attribute__ ((packed));
unsigned char bPowerOn2PwrGood;
unsigned char bHubContrCurrent;
char DeviceRemovable[];
} __attribute__ ((packed)) hub_descriptor_t;
typedef struct {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short bcdUSB;
unsigned char bDeviceClass;
unsigned char bDeviceSubClass;
unsigned char bDeviceProtocol;
unsigned char bMaxPacketSize0;
unsigned short idVendor;
unsigned short idProduct;
unsigned short bcdDevice;
unsigned char iManufacturer;
unsigned char iProduct;
unsigned char iSerialNumber;
unsigned char bNumConfigurations;
} __attribute__ ((packed)) device_descriptor_t;
typedef struct {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short wTotalLength;
unsigned char bNumInterfaces;
unsigned char bConfigurationValue;
unsigned char iConfiguration;
unsigned char bmAttributes;
unsigned char bMaxPower;
} __attribute__ ((packed)) configuration_descriptor_t;
typedef struct {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned char bInterfaceNumber;
unsigned char bAlternateSetting;
unsigned char bNumEndpoints;
unsigned char bInterfaceClass;
unsigned char bInterfaceSubClass;
unsigned char bInterfaceProtocol;
unsigned char iInterface;
} __attribute__ ((packed)) interface_descriptor_t;
typedef struct {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned char bEndpointAddress;
unsigned char bmAttributes;
unsigned short wMaxPacketSize;
unsigned char bInterval;
} __attribute__ ((packed)) endpoint_descriptor_t;
hci_t *new_controller (void);
void detach_controller (hci_t *controller);
void usb_poll (void);
void init_device_entry (hci_t *controller, int num);
void set_feature (usbdev_t *dev, int endp, int feature, int rtype);
void get_status (usbdev_t *dev, int endp, int rtype, int len, void *data);
int clear_stall (endpoint_t *ep);
void usb_nop_init (usbdev_t *dev);
void usb_hub_init (usbdev_t *dev);
void usb_hid_init (usbdev_t *dev);
void usb_msc_init (usbdev_t *dev);
int set_address (hci_t *controller, int lowspeed);
u8 *get_descriptor (usbdev_t *dev, unsigned char bmRequestType,
int descType, int descIdx, int langID);
static inline unsigned char
gen_bmRequestType (dev_req_dir dir, dev_req_type type, dev_req_recp recp)
{
return (dir << 7) | (type << 5) | recp;
}
void usb_detach_device(hci_t *controller, int devno);
int usb_attach_device(hci_t *controller, int hubaddress, int port, int lowspeed);
#endif
|
