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usb.h revision 1.23
      1 /*	$NetBSD: usb.h,v 1.23 1999/06/30 06:44:23 augustss Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Lennart Augustsson (augustss (at) carlstedt.se) at
      9  * Carlstedt Research & Technology.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *        This product includes software developed by the NetBSD
     22  *        Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 
     41 #ifndef _USB_H_
     42 #define _USB_H_
     43 
     44 #include <sys/types.h>
     45 #if defined(__NetBSD__)
     46 #include <sys/ioctl.h>
     47 #endif
     48 
     49 #if defined(__NetBSD__)
     50 #if defined(_KERNEL)
     51 #include <dev/usb/usb_port.h>
     52 #endif /* _KERNEL */
     53 
     54 #elif defined(__FreeBSD__)
     55 #include <sys/malloc.h>
     56 
     57 #if defined(KERNEL)
     58 MALLOC_DECLARE(M_USB);
     59 MALLOC_DECLARE(M_USBDEV);
     60 MALLOC_DECLARE(M_USBHC);
     61 
     62 #include <dev/usb/usb_port.h>
     63 #endif /* KERNEL */
     64 #endif /* __FreeBSD__ */
     65 
     66 
     67 #define USB_MAX_DEVICES 128
     68 #define USB_START_ADDR 0
     69 
     70 #define USB_CONTROL_ENDPOINT 0
     71 #define USB_MAX_ENDPOINTS 16
     72 
     73 #define USB_FRAMES_PER_SECOND 1000
     74 
     75 /*
     76  * The USB records contain some unaligned little-endian word
     77  * components.  The U[SG]ETW macros take care of both the alignment
     78  * and endian problem and should always be used to access 16 bit
     79  * values.
     80  */
     81 typedef u_int8_t uByte;
     82 typedef u_int8_t uWord[2];
     83 #define UGETW(w) ((w)[0] | ((w)[1] << 8))
     84 #define USETW(w,v) ((w)[0] = (u_int8_t)(v), (w)[1] = (u_int8_t)((v) >> 8))
     85 #define USETW2(w,h,l) ((w)[0] = (u_int8_t)(l), (w)[1] = (u_int8_t)(h))
     86 typedef u_int8_t uDWord[4];
     87 #define UGETDW(w) ((w)[0] | ((w)[1] << 8) | ((w)[2] << 16) | ((w)[3] << 24))
     88 #define USETDW(w,v) ((w)[0] = (u_int8_t)(v), \
     89 		     (w)[1] = (u_int8_t)((v) >> 8), \
     90 		     (w)[2] = (u_int8_t)((v) >> 16), \
     91 		     (w)[3] = (u_int8_t)((v) >> 24))
     92 /*
     93  * On little-endian machines that can handle unanliged accesses
     94  * (e.g. i386) these macros can be replaced by the following.
     95  */
     96 #if 0
     97 #define UGETW(w) (*(u_int16_t *)(w))
     98 #define USETW(w,v) (*(u_int16_t *)(w) = (v))
     99 #endif
    100 
    101 typedef struct {
    102 	uByte		bmRequestType;
    103 	uByte		bRequest;
    104 	uWord		wValue;
    105 	uWord		wIndex;
    106 	uWord		wLength;
    107 } usb_device_request_t;
    108 
    109 #define UT_WRITE		0x00
    110 #define UT_READ			0x80
    111 #define UT_STANDARD		0x00
    112 #define UT_CLASS		0x20
    113 #define UT_VENDOR		0x40
    114 #define UT_DEVICE		0x00
    115 #define UT_INTERFACE		0x01
    116 #define UT_ENDPOINT		0x02
    117 #define UT_OTHER		0x03
    118 
    119 #define UT_READ_DEVICE		(UT_READ  | UT_STANDARD | UT_DEVICE)
    120 #define UT_READ_INTERFACE	(UT_READ  | UT_STANDARD | UT_INTERFACE)
    121 #define UT_READ_ENDPOINT	(UT_READ  | UT_STANDARD | UT_ENDPOINT)
    122 #define UT_WRITE_DEVICE		(UT_WRITE | UT_STANDARD | UT_DEVICE)
    123 #define UT_WRITE_INTERFACE	(UT_WRITE | UT_STANDARD | UT_INTERFACE)
    124 #define UT_WRITE_ENDPOINT	(UT_WRITE | UT_STANDARD | UT_ENDPOINT)
    125 #define UT_READ_CLASS_DEVICE	(UT_READ  | UT_CLASS | UT_DEVICE)
    126 #define UT_READ_CLASS_INTERFACE	(UT_READ  | UT_CLASS | UT_INTERFACE)
    127 #define UT_READ_CLASS_OTHER	(UT_READ  | UT_CLASS | UT_OTHER)
    128 #define UT_WRITE_CLASS_DEVICE	(UT_WRITE | UT_CLASS | UT_DEVICE)
    129 #define UT_WRITE_CLASS_INTERFACE (UT_WRITE | UT_CLASS | UT_INTERFACE)
    130 #define UT_WRITE_CLASS_OTHER	(UT_WRITE | UT_CLASS | UT_OTHER)
    131 #define UT_READ_VENDOR_DEVICE	(UT_READ  | UT_VENDOR | UT_DEVICE)
    132 #define UT_READ_VENDOR_INTERFACE (UT_READ  | UT_VENDOR | UT_INTERFACE)
    133 #define UT_READ_VENDOR_OTHER	(UT_READ  | UT_VENDOR | UT_OTHER)
    134 #define UT_WRITE_VENDOR_DEVICE	(UT_WRITE | UT_VENDOR | UT_DEVICE)
    135 #define UT_WRITE_VENDOR_INTERFACE (UT_WRITE | UT_VENDOR | UT_INTERFACE)
    136 #define UT_WRITE_VENDOR_OTHER	(UT_WRITE | UT_VENDOR | UT_OTHER)
    137 
    138 /* Requests */
    139 #define UR_GET_STATUS		0x00
    140 #define UR_CLEAR_FEATURE	0x01
    141 #define UR_SET_FEATURE		0x03
    142 #define UR_SET_ADDRESS		0x05
    143 #define UR_GET_DESCRIPTOR	0x06
    144 #define  UDESC_DEVICE		1
    145 #define  UDESC_CONFIG		2
    146 #define  UDESC_STRING		3
    147 #define  UDESC_INTERFACE	4
    148 #define  UDESC_ENDPOINT		5
    149 #define UR_SET_DESCRIPTOR	0x07
    150 #define UR_GET_CONFIG		0x08
    151 #define UR_SET_CONFIG		0x09
    152 #define UR_GET_INTERFACE	0x0a
    153 #define UR_SET_INTERFACE	0x0b
    154 #define UR_SYNCH_FRAME		0x0c
    155 
    156 /* Feature numbers */
    157 #define UF_ENDPOINT_HALT	0
    158 #define UF_DEVICE_REMOTE_WAKEUP	1
    159 
    160 #define USB_MAX_IPACKET		8 /* maximum size of the initial packet */
    161 
    162 typedef struct {
    163 	uByte		bLength;
    164 	uByte		bDescriptorType;
    165 	uByte		bDescriptorSubtype;
    166 } usb_descriptor_t;
    167 
    168 typedef struct {
    169 	uByte		bLength;
    170 	uByte		bDescriptorType;
    171 	uWord		bcdUSB;
    172 	uByte		bDeviceClass;
    173 	uByte		bDeviceSubClass;
    174 	uByte		bDeviceProtocol;
    175 	uByte		bMaxPacketSize;
    176 	/* The fields below are not part of the initial descriptor. */
    177 	uWord		idVendor;
    178 	uWord		idProduct;
    179 	uWord		bcdDevice;
    180 	uByte		iManufacturer;
    181 	uByte		iProduct;
    182 	uByte		iSerialNumber;
    183 	uByte		bNumConfigurations;
    184 } usb_device_descriptor_t;
    185 #define USB_DEVICE_DESCRIPTOR_SIZE 18
    186 
    187 typedef struct {
    188 	uByte		bLength;
    189 	uByte		bDescriptorType;
    190 	uWord		wTotalLength;
    191 	uByte		bNumInterface;
    192 	uByte		bConfigurationValue;
    193 	uByte		iConfiguration;
    194 	uByte		bmAttributes;
    195 #define UC_BUS_POWERED		0x80
    196 #define UC_SELF_POWERED		0x40
    197 #define UC_REMOTE_WAKEUP	0x20
    198 	uByte		bMaxPower; /* max current in 2 mA units */
    199 #define UC_POWER_FACTOR 2
    200 } usb_config_descriptor_t;
    201 #define USB_CONFIG_DESCRIPTOR_SIZE 9
    202 
    203 typedef struct {
    204 	uByte		bLength;
    205 	uByte		bDescriptorType;
    206 	uByte		bInterfaceNumber;
    207 	uByte		bAlternateSetting;
    208 	uByte		bNumEndpoints;
    209 	uByte		bInterfaceClass;
    210 	uByte		bInterfaceSubClass;
    211 	uByte		bInterfaceProtocol;
    212 	uByte		iInterface;
    213 } usb_interface_descriptor_t;
    214 #define USB_INTERFACE_DESCRIPTOR_SIZE 9
    215 
    216 typedef struct {
    217 	uByte		bLength;
    218 	uByte		bDescriptorType;
    219 	uByte		bEndpointAddress;
    220 #define UE_IN		0x80
    221 #define UE_OUT		0x00
    222 #define UE_ADDR		0x0f
    223 #define UE_GET_ADDR(a)	((a) & UE_ADDR)
    224 #define UE_GET_IN(a)	(((a) >> 7) & 1)
    225 	uByte		bmAttributes;
    226 #define UE_XFERTYPE	0x03
    227 #define  UE_CONTROL	0x00
    228 #define  UE_ISOCHRONOUS	0x01
    229 #define  UE_BULK	0x02
    230 #define  UE_INTERRUPT	0x03
    231 #define UE_ISO_TYPE	0x0c
    232 #define  UE_ISO_ASYNC	0x04
    233 #define  UE_ISO_ADAPT	0x08
    234 #define  UE_ISO_SYNC	0x0c
    235 	uWord		wMaxPacketSize;
    236 	uByte		bInterval;
    237 } usb_endpoint_descriptor_t;
    238 #define USB_ENDPOINT_DESCRIPTOR_SIZE 7
    239 
    240 typedef struct {
    241 	uByte		bLength;
    242 	uByte		bDescriptorType;
    243 	uWord		bString[127];
    244 } usb_string_descriptor_t;
    245 #define USB_MAX_STRING_LEN 128
    246 #define USB_LANGUAGE_TABLE 0	/* # of the string language id table */
    247 
    248 /* Hub specific request */
    249 #define UR_GET_BUS_STATE	0x02
    250 
    251 /* Hub features */
    252 #define UHF_C_HUB_LOCAL_POWER	0
    253 #define UHF_C_HUB_OVER_CURRENT	1
    254 #define UHF_PORT_CONNECTION	0
    255 #define UHF_PORT_ENABLE		1
    256 #define UHF_PORT_SUSPEND	2
    257 #define UHF_PORT_OVER_CURRENT	3
    258 #define UHF_PORT_RESET		4
    259 #define UHF_PORT_POWER		8
    260 #define UHF_PORT_LOW_SPEED	9
    261 #define UHF_C_PORT_CONNECTION	16
    262 #define UHF_C_PORT_ENABLE	17
    263 #define UHF_C_PORT_SUSPEND	18
    264 #define UHF_C_PORT_OVER_CURRENT	19
    265 #define UHF_C_PORT_RESET	20
    266 
    267 typedef struct {
    268 	uByte		bDescLength;
    269 	uByte		bDescriptorType;
    270 	uByte		bNbrPorts;
    271 	uWord		wHubCharacteristics;
    272 #define UHD_PWR			0x03
    273 #define UHD_PWR_GANGED		0x00
    274 #define UHD_PWR_INDIVIDUAL	0x01
    275 #define UHD_PWR_NO_SWITCH	0x02
    276 #define UHD_COMPOUND		0x04
    277 #define UHD_OC			0x18
    278 #define UHD_OC_GLOBAL		0x00
    279 #define UHD_OC_INDIVIDUAL	0x08
    280 #define UHD_OC_NONE		0x10
    281 	uByte		bPwrOn2PwrGood;	/* delay in 2 ms units */
    282 #define UHD_PWRON_FACTOR 2
    283 	uByte		bHubContrCurrent;
    284 	uByte		DeviceRemovable[32]; /* max 255 ports */
    285 #define UHD_NOT_REMOV(desc, i) \
    286     (((desc)->DeviceRemovable[(i)/8] >> ((i) % 8)) & 1)
    287 	/* deprecated uByte		PortPowerCtrlMask[]; */
    288 } usb_hub_descriptor_t;
    289 #define USB_HUB_DESCRIPTOR_SIZE 8
    290 
    291 typedef struct {
    292 	uWord		wStatus;
    293 /* Device status flags */
    294 #define UDS_SELF_POWERED		0x0001
    295 #define UDS_REMOTE_WAKEUP		0x0002
    296 /* Endpoint status flags */
    297 #define UES_HALT			0x0001
    298 } usb_status_t;
    299 
    300 typedef struct {
    301 	uWord		wHubStatus;
    302 #define UHS_LOCAL_POWER			0x0001
    303 #define UHS_OVER_CURRENT		0x0002
    304 	uWord		wHubChange;
    305 } usb_hub_status_t;
    306 
    307 typedef struct {
    308 	uWord		wPortStatus;
    309 #define UPS_CURRENT_CONNECT_STATUS	0x0001
    310 #define UPS_PORT_ENABLED		0x0002
    311 #define UPS_SUSPEND			0x0004
    312 #define UPS_OVERCURRENT_INDICATOR	0x0008
    313 #define UPS_RESET			0x0010
    314 #define UPS_PORT_POWER			0x0100
    315 #define UPS_LOW_SPEED			0x0200
    316 	uWord		wPortChange;
    317 #define UPS_C_CONNECT_STATUS		0x0001
    318 #define UPS_C_PORT_ENABLED		0x0002
    319 #define UPS_C_SUSPEND			0x0004
    320 #define UPS_C_OVERCURRENT_INDICATOR	0x0008
    321 #define UPS_C_PORT_RESET		0x0010
    322 } usb_port_status_t;
    323 
    324 #define UDESC_CS_DEVICE		0x21
    325 #define UDESC_CS_CONFIG		0x22
    326 #define UDESC_CS_STRING		0x23
    327 #define UDESC_CS_INTERFACE	0x24
    328 #define UDESC_CS_ENDPOINT	0x25
    329 
    330 #define UDESC_HUB		0x29
    331 
    332 #define UCLASS_UNSPEC		0
    333 #define UCLASS_AUDIO		1
    334 #define  USUBCLASS_AUDIOCONTROL	1
    335 #define  USUBCLASS_AUDIOSTREAM	2
    336 #define UCLASS_CDC		2 /* communication */
    337 #define	 USUBCLASS_DIRECT_LINE_CONTROL_MODEL	1
    338 #define  USUBCLASS_ABSTRACT_CONTROL_MODEL	2
    339 #define	 USUBCLASS_TELEPHONE_CONTROL_MODEL	3
    340 #define	 USUBCLASS_MULTICHANNEL_CONTROL_MODEL	4
    341 #define	 USUBCLASS_CAPI_CONTROLMODEL		5
    342 #define	 USUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL 6
    343 #define	 USUBCLASS_ATM_NETWORKING_CONTROL_MODEL	7
    344 #define   UPROTO_CDC_AT		1
    345 #define UCLASS_HID		3
    346 #define  USUBCLASS_BOOT	 	1
    347 #define UCLASS_PRINTER		7
    348 #define  USUBCLASS_PRINTER	1
    349 #define  UPROTO_PRINTER_UNI	1
    350 #define  UPROTO_PRINTER_BI	2
    351 #define UCLASS_MASS		8
    352 #define  USUBCLASS_RBC		1
    353 #define  USUBCLASS_SFF8020I	2
    354 #define  USUBCLASS_QIC157	3
    355 #define  USUBCLASS_UFI		4
    356 #define  USUBCLASS_SFF8070I	5
    357 #define  USUBCLASS_SCSI		6
    358 #define  UPROTO_MASS_CBI_C	0
    359 #define  UPROTO_MASS_CBI_NC	1
    360 #define UCLASS_HUB		9
    361 #define  USUBCLASS_HUB		0
    362 #define UCLASS_DATA		10
    363 
    364 #define USB_HUB_MAX_DEPTH 5
    365 
    366 /*
    367  * Minimum time a device needs to be powered down to go through
    368  * a power cycle.  XXX Are these time in the spec?
    369  */
    370 #define USB_POWER_DOWN_TIME	200 /* ms */
    371 #define USB_PORT_POWER_DOWN_TIME	100 /* ms */
    372 
    373 #if 0
    374 /* These are the values from the spec. */
    375 #define USB_PORT_RESET_DELAY	10  /* ms */
    376 #define USB_PORT_RESET_SETTLE	10  /* ms */
    377 #define USB_PORT_POWERUP_DELAY	100 /* ms */
    378 #define USB_SET_ADDRESS_SETTLE	2   /* ms */
    379 #define USB_RESUME_TIME		(20*5)  /* ms */
    380 #define USB_RESUME_WAIT		10  /* ms */
    381 #define USB_RESUME_RECOVERY	10  /* ms */
    382 #else
    383 /* Allow for marginal (i.e. non-conforming) devices. */
    384 #define USB_PORT_RESET_DELAY	50  /* ms */
    385 #define USB_PORT_RESET_RECOVERY	50  /* ms */
    386 #define USB_PORT_POWERUP_DELAY	200 /* ms */
    387 #define USB_SET_ADDRESS_SETTLE	10  /* ms */
    388 #define USB_RESUME_DELAY	(50*5)  /* ms */
    389 #define USB_RESUME_WAIT		50  /* ms */
    390 #define USB_RESUME_RECOVERY	50  /* ms */
    391 #endif
    392 
    393 #define USB_MIN_POWER		100 /* mA */
    394 #define USB_MAX_POWER		500 /* mA */
    395 
    396 #define USB_BUS_RESET_DELAY	100 /* ms XXX?*/
    397 
    398 /*** ioctl() related stuff ***/
    399 
    400 struct usb_ctl_request {
    401 	int	addr;
    402 	usb_device_request_t request;
    403 	void	*data;
    404 	int	flags;
    405 /* XXX must match flags in usbdi.h */
    406 #define USBD_SHORT_XFER_OK	0x04
    407 	int	actlen;		/* actual length transferred */
    408 };
    409 
    410 struct usb_alt_interface {
    411 	int	config_index;
    412 	int	interface_index;
    413 	int	alt_no;
    414 };
    415 
    416 #define USB_CURRENT_CONFIG_INDEX (-1)
    417 #define USB_CURRENT_ALT_INDEX (-1)
    418 
    419 struct usb_config_desc {
    420 	int	config_index;
    421 	usb_config_descriptor_t desc;
    422 };
    423 
    424 struct usb_interface_desc {
    425 	int	config_index;
    426 	int	interface_index;
    427 	int	alt_index;
    428 	usb_interface_descriptor_t desc;
    429 };
    430 
    431 struct usb_endpoint_desc {
    432 	int	config_index;
    433 	int	interface_index;
    434 	int	alt_index;
    435 	int	endpoint_index;
    436 	usb_endpoint_descriptor_t desc;
    437 };
    438 
    439 struct usb_full_desc {
    440 	int	config_index;
    441 	u_int	size;
    442 	u_char	*data;
    443 };
    444 
    445 struct usb_string_desc {
    446 	int	string_index;
    447 	int	language_id;
    448 	usb_string_descriptor_t desc;
    449 };
    450 
    451 struct usb_ctl_report_desc {
    452 	int	size;
    453 	u_char	data[1024];	/* filled data size will vary */
    454 };
    455 
    456 struct usb_device_info {
    457 	u_int8_t	addr;	/* device address */
    458 	char		product[USB_MAX_STRING_LEN];
    459 	char		vendor[USB_MAX_STRING_LEN];
    460 	char		release[8];
    461 	u_int16_t	productNo;
    462 	u_int16_t	vendorNo;
    463 	u_int8_t	class;
    464 	u_int8_t	config;
    465 	u_int8_t	lowspeed;
    466 	int		power;	/* power consumption in mA, 0 if selfpowered */
    467 	int		nports;
    468 	u_int8_t	ports[16];/* hub only: addresses of devices on ports */
    469 #define USB_PORT_ENABLED 0xff
    470 #define USB_PORT_SUSPENDED 0xfe
    471 #define USB_PORT_POWERED 0xfd
    472 #define USB_PORT_DISABLED 0xfc
    473 };
    474 
    475 struct usb_ctl_report {
    476 	int report;
    477 	u_char	data[1024];	/* filled data size will vary */
    478 };
    479 
    480 struct usb_device_stats {
    481 	u_long	requests[4];	/* indexed by transfer type UE_* */
    482 };
    483 
    484 /* USB controller */
    485 #define USB_REQUEST		_IOWR('U', 1, struct usb_ctl_request)
    486 #define USB_SETDEBUG		_IOW ('U', 2, int)
    487 #define USB_DISCOVER		_IO  ('U', 3)
    488 #define USB_DEVICEINFO		_IOWR('U', 4, struct usb_device_info)
    489 #define USB_DEVICESTATS		_IOR ('U', 5, struct usb_device_stats)
    490 
    491 /* Generic HID device */
    492 #define USB_GET_REPORT_DESC	_IOR ('U', 21, struct usb_ctl_report_desc)
    493 #define USB_SET_IMMED		_IOW ('U', 22, int)
    494 #define USB_GET_REPORT		_IOWR('U', 23, struct usb_ctl_report)
    495 
    496 /* Generic USB device */
    497 #define USB_GET_CONFIG		_IOR ('U', 100, int)
    498 #define USB_SET_CONFIG		_IOW ('U', 101, int)
    499 #define USB_GET_ALTINTERFACE	_IOWR('U', 102, struct usb_alt_interface)
    500 #define USB_SET_ALTINTERFACE	_IOWR('U', 103, struct usb_alt_interface)
    501 #define USB_GET_NO_ALT		_IOWR('U', 104, struct usb_alt_interface)
    502 #define USB_GET_DEVICE_DESC	_IOR ('U', 105, usb_device_descriptor_t)
    503 #define USB_GET_CONFIG_DESC	_IOWR('U', 106, struct usb_config_desc)
    504 #define USB_GET_INTERFACE_DESC	_IOWR('U', 107, struct usb_interface_desc)
    505 #define USB_GET_ENDPOINT_DESC	_IOWR('U', 108, struct usb_endpoint_desc)
    506 #define USB_GET_FULL_DESC	_IOWR('U', 109, struct usb_full_desc)
    507 #define USB_GET_STRING_DESC	_IOWR('U', 110, struct usb_string_desc)
    508 #define USB_DO_REQUEST		_IOWR('U', 111, struct usb_ctl_request)
    509 #define USB_GET_DEVICEINFO	_IOR ('U', 112, struct usb_device_info)
    510 #define USB_SET_SHORT_XFER	_IOW ('U', 113, int)
    511 
    512 #endif /* _USB_H_ */
    513