usb_ch9.h.rej

linux得一些常用命令,以及linux环境下的c编程

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+ /*
+  * This file holds USB constants and structures that are needed for USB
+  * device APIs.  These are used by the USB device model, which is defined
+  * in chapter 9 of the USB 2.0 specification.  Linux has several APIs in C
+  * that need these:
+  *
+  * - the master/host side Linux-USB kernel driver API;
+  * - the "usbfs" user space API; and
+  * - the Linux "gadget" slave/device side driver API.
+  *
+  * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems
+  * act either as a USB master/host or as a USB slave/device.  That means
+  * the master and slave side APIs will benefit from working well together.
+  */
+ 
+ #ifndef __LINUX_USB_CH9_H
+ #define __LINUX_USB_CH9_H
+ 
+ #include <asm/types.h>		/* __u8 etc */
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* CONTROL REQUEST SUPPORT */
+ 
+ /*
+  * USB directions
+  *
+  * This bit flag is used in endpoint descriptors' bEndpointAddress field.
+  * It's also one of three fields in control requests bRequestType.
+  */
+ #define USB_DIR_OUT			0		/* to device */
+ #define USB_DIR_IN			0x80		/* to host */
+ 
+ /*
+  * USB types, the second of three bRequestType fields
+  */
+ #define USB_TYPE_MASK			(0x03 << 5)
+ #define USB_TYPE_STANDARD		(0x00 << 5)
+ #define USB_TYPE_CLASS			(0x01 << 5)
+ #define USB_TYPE_VENDOR			(0x02 << 5)
+ #define USB_TYPE_RESERVED		(0x03 << 5)
+ 
+ /*
+  * USB recipients, the third of three bRequestType fields
+  */
+ #define USB_RECIP_MASK			0x1f
+ #define USB_RECIP_DEVICE		0x00
+ #define USB_RECIP_INTERFACE		0x01
+ #define USB_RECIP_ENDPOINT		0x02
+ #define USB_RECIP_OTHER			0x03
+ 
+ /*
+  * Standard requests, for the bRequest field of a SETUP packet.
+  *
+  * These are qualified by the bRequestType field, so that for example
+  * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved
+  * by a GET_STATUS request.
+  */
+ #define USB_REQ_GET_STATUS		0x00
+ #define USB_REQ_CLEAR_FEATURE		0x01
+ #define USB_REQ_SET_FEATURE		0x03
+ #define USB_REQ_SET_ADDRESS		0x05
+ #define USB_REQ_GET_DESCRIPTOR		0x06
+ #define USB_REQ_SET_DESCRIPTOR		0x07
+ #define USB_REQ_GET_CONFIGURATION	0x08
+ #define USB_REQ_SET_CONFIGURATION	0x09
+ #define USB_REQ_GET_INTERFACE		0x0A
+ #define USB_REQ_SET_INTERFACE		0x0B
+ #define USB_REQ_SYNCH_FRAME		0x0C
+ 
+ /*
+  * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and
+  * are read as a bit array returned by USB_REQ_GET_STATUS.  (So there
+  * are at most sixteen features of each type.)
+  */
+ #define USB_DEVICE_SELF_POWERED		0	/* (read only) */
+ #define USB_DEVICE_REMOTE_WAKEUP	1	/* dev may initiate wakeup */
+ #define USB_DEVICE_TEST_MODE		2	/* (high speed only) */
+ #define USB_DEVICE_B_HNP_ENABLE		3	/* dev may initiate HNP */
+ #define USB_DEVICE_A_HNP_SUPPORT	4	/* RH port supports HNP */
+ #define USB_DEVICE_A_ALT_HNP_SUPPORT	5	/* other RH port does */
+ #define USB_DEVICE_DEBUG_MODE		6	/* (special devices only) */
+ 
+ #define USB_ENDPOINT_HALT		0	/* IN/OUT will STALL */
+ 
+ 
+ /**
+  * struct usb_ctrlrequest - SETUP data for a USB device control request
+  * @bRequestType: matches the USB bmRequestType field
+  * @bRequest: matches the USB bRequest field
+  * @wValue: matches the USB wValue field (le16 byte order)
+  * @wIndex: matches the USB wIndex field (le16 byte order)
+  * @wLength: matches the USB wLength field (le16 byte order)
+  *
+  * This structure is used to send control requests to a USB device.  It matches
+  * the different fields of the USB 2.0 Spec section 9.3, table 9-2.  See the
+  * USB spec for a fuller description of the different fields, and what they are
+  * used for.
+  *
+  * Note that the driver for any interface can issue control requests.
+  * For most devices, interfaces don't coordinate with each other, so
+  * such requests may be made at any time.
+  */
+ struct usb_ctrlrequest {
+ 	__u8 bRequestType;
+ 	__u8 bRequest;
+ 	__u16 wValue;
+ 	__u16 wIndex;
+ 	__u16 wLength;
+ } __attribute__ ((packed));
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /*
+  * STANDARD DESCRIPTORS ... as returned by GET_DESCRIPTOR, or
+  * (rarely) accepted by SET_DESCRIPTOR.
+  *
+  * Note that all multi-byte values here are encoded in little endian
+  * byte order "on the wire".  But when exposed through Linux-USB APIs,
+  * they've been converted to cpu byte order.
+  */
+ 
+ /*
+  * Descriptor types ... USB 2.0 spec table 9.5
+  */
+ #define USB_DT_DEVICE			0x01
+ #define USB_DT_CONFIG			0x02
+ #define USB_DT_STRING			0x03
+ #define USB_DT_INTERFACE		0x04
+ #define USB_DT_ENDPOINT			0x05
+ #define USB_DT_DEVICE_QUALIFIER		0x06
+ #define USB_DT_OTHER_SPEED_CONFIG	0x07
+ #define USB_DT_INTERFACE_POWER		0x08
+ /* these are from a minor usb 2.0 revision (ECN) */
+ #define USB_DT_OTG			0x09
+ #define USB_DT_DEBUG			0x0a
+ #define USB_DT_INTERFACE_ASSOCIATION	0x0b
+ 
+ /* conventional codes for class-specific descriptors */
+ #define USB_DT_CS_DEVICE		0x21
+ #define USB_DT_CS_CONFIG		0x22
+ #define USB_DT_CS_STRING		0x23
+ #define USB_DT_CS_INTERFACE		0x24
+ #define USB_DT_CS_ENDPOINT		0x25
+ 
+ /* All standard descriptors have these 2 fields at the beginning */
+ struct usb_descriptor_header {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ } __attribute__ ((packed));
+ 
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB_DT_DEVICE: Device descriptor */
+ struct usb_device_descriptor {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ 
+ 	__u16 bcdUSB;
+ 	__u8  bDeviceClass;
+ 	__u8  bDeviceSubClass;
+ 	__u8  bDeviceProtocol;
+ 	__u8  bMaxPacketSize0;
+ 	__u16 idVendor;
+ 	__u16 idProduct;
+ 	__u16 bcdDevice;
+ 	__u8  iManufacturer;
+ 	__u8  iProduct;
+ 	__u8  iSerialNumber;
+ 	__u8  bNumConfigurations;
+ } __attribute__ ((packed));
+ 
+ #define USB_DT_DEVICE_SIZE		18
+ 
+ 
+ /*
+  * Device and/or Interface Class codes
+  * as found in bDeviceClass or bInterfaceClass
+  * and defined by www.usb.org documents
+  */
+ #define USB_CLASS_PER_INTERFACE		0	/* for DeviceClass */
+ #define USB_CLASS_AUDIO			1
+ #define USB_CLASS_COMM			2
+ #define USB_CLASS_HID			3
+ #define USB_CLASS_PHYSICAL		5
+ #define USB_CLASS_STILL_IMAGE		6
+ #define USB_CLASS_PRINTER		7
+ #define USB_CLASS_MASS_STORAGE		8
+ #define USB_CLASS_HUB			9
+ #define USB_CLASS_CDC_DATA		0x0a
+ #define USB_CLASS_CSCID			0x0b	/* chip+ smart card */
+ #define USB_CLASS_CONTENT_SEC		0x0d	/* content security */
+ #define USB_CLASS_VIDEO			0x0e
+ #define USB_CLASS_APP_SPEC		0xfe
+ #define USB_CLASS_VENDOR_SPEC		0xff
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB_DT_CONFIG: Configuration descriptor information.
+  *
+  * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the
+  * descriptor type is different.  Highspeed-capable devices can look
+  * different depending on what speed they're currently running.  Only
+  * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG
+  * descriptors.
+  */
+ struct usb_config_descriptor {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ 
+ 	__u16 wTotalLength;
+ 	__u8  bNumInterfaces;
+ 	__u8  bConfigurationValue;
+ 	__u8  iConfiguration;
+ 	__u8  bmAttributes;
+ 	__u8  bMaxPower;
+ } __attribute__ ((packed));
+ 
+ #define USB_DT_CONFIG_SIZE		9
+ 
+ /* from config descriptor bmAttributes */
+ #define USB_CONFIG_ATT_ONE		(1 << 7)	/* must be set */
+ #define USB_CONFIG_ATT_SELFPOWER	(1 << 6)	/* self powered */
+ #define USB_CONFIG_ATT_WAKEUP		(1 << 5)	/* can wakeup */
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB_DT_STRING: String descriptor */
+ struct usb_string_descriptor {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ 
+ 	__u16 wData[1];		/* UTF-16LE encoded */
+ } __attribute__ ((packed));
+ 
+ /* note that "string" zero is special, it holds language codes that
+  * the device supports, not Unicode characters.
+  */
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB_DT_INTERFACE: Interface descriptor */
+ struct usb_interface_descriptor {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ 
+ 	__u8  bInterfaceNumber;
+ 	__u8  bAlternateSetting;
+ 	__u8  bNumEndpoints;
+ 	__u8  bInterfaceClass;
+ 	__u8  bInterfaceSubClass;
+ 	__u8  bInterfaceProtocol;
+ 	__u8  iInterface;
+ } __attribute__ ((packed));
+ 
+ #define USB_DT_INTERFACE_SIZE		9
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB_DT_ENDPOINT: Endpoint descriptor */
+ struct usb_endpoint_descriptor {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ 
+ 	__u8  bEndpointAddress;
+ 	__u8  bmAttributes;
+ 	__u16 wMaxPacketSize;
+ 	__u8  bInterval;
+ 
+ 	// NOTE:  these two are _only_ in audio endpoints.
+ 	// use USB_DT_ENDPOINT*_SIZE in bLength, not sizeof.
+ 	__u8  bRefresh;
+ 	__u8  bSynchAddress;
+ } __attribute__ ((packed));
+ 
+ #define USB_DT_ENDPOINT_SIZE		7
+ #define USB_DT_ENDPOINT_AUDIO_SIZE	9	/* Audio extension */
+ 
+ 
+ /*
+  * Endpoints
+  */
+ #define USB_ENDPOINT_NUMBER_MASK	0x0f	/* in bEndpointAddress */
+ #define USB_ENDPOINT_DIR_MASK		0x80
+ 
+ #define USB_ENDPOINT_XFERTYPE_MASK	0x03	/* in bmAttributes */
+ #define USB_ENDPOINT_XFER_CONTROL	0
+ #define USB_ENDPOINT_XFER_ISOC		1
+ #define USB_ENDPOINT_XFER_BULK		2
+ #define USB_ENDPOINT_XFER_INT		3
+ 
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */
+ struct usb_qualifier_descriptor {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ 
+ 	__u16 bcdUSB;
+ 	__u8  bDeviceClass;
+ 	__u8  bDeviceSubClass;
+ 	__u8  bDeviceProtocol;
+ 	__u8  bMaxPacketSize0;
+ 	__u8  bNumConfigurations;
+ 	__u8  bRESERVED;
+ } __attribute__ ((packed));
+ 
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB_DT_OTG (from OTG 1.0a supplement) */
+ struct usb_otg_descriptor {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ 
+ 	__u8  bmAttributes;	/* support for HNP, SRP, etc */
+ } __attribute__ ((packed));
+ 
+ /* from usb_otg_descriptor.bmAttributes */
+ #define USB_OTG_SRP		(1 << 0)
+ #define USB_OTG_HNP		(1 << 1)	/* swap host/device roles */
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB_DT_DEBUG:  for special highspeed devices, replacing serial console */
+ struct usb_debug_descriptor {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ 
+ 	/* bulk endpoints with 8 byte maxpacket */
+ 	__u8  bDebugInEndpoint;
+ 	__u8  bDebugOutEndpoint;
+ };
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */
+ struct usb_interface_assoc_descriptor {
+ 	__u8  bLength;
+ 	__u8  bDescriptorType;
+ 
+ 	__u8  bFirstInterface;
+ 	__u8  bInterfaceCount;
+ 	__u8  bFunctionClass;
+ 	__u8  bFunctionSubClass;
+ 	__u8  bFunctionProtocol;
+ 	__u8  iFunction;
+ } __attribute__ ((packed));
+ 
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+ /* USB 2.0 defines three speeds, here's how Linux identifies them */
+ 
+ enum usb_device_speed {
+ 	USB_SPEED_UNKNOWN = 0,			/* enumerating */
+ 	USB_SPEED_LOW, USB_SPEED_FULL,		/* usb 1.1 */
+ 	USB_SPEED_HIGH				/* usb 2.0 */
+ };
+ 
+ enum usb_device_state {
+ 	/* NOTATTACHED isn't in the USB spec, and this state acts
+ 	 * the same as ATTACHED ... but it's clearer this way.
+ 	 */
+ 	USB_STATE_NOTATTACHED = 0,
+ 
+ 	/* the chapter 9 device states */
+ 	USB_STATE_ATTACHED,
+ 	USB_STATE_POWERED,
+ 	USB_STATE_DEFAULT,			/* limited function */
+ 	USB_STATE_ADDRESS,
+ 	USB_STATE_CONFIGURED,			/* most functions */
+ 
+ 	USB_STATE_SUSPENDED
+ 
+ 	/* NOTE:  there are actually four different SUSPENDED
+ 	 * states, returning to POWERED, DEFAULT, ADDRESS, or
+ 	 * CONFIGURED respectively when SOF tokens flow again.
+ 	 */
+ };
+ 
+ #endif	/* __LINUX_USB_CH9_H */