[mirror_edk2.git] / MdeModulePkg / Bus / Usb / UsbBusDxe / UsbBus.h

/** @file\r
Copyright (c) 2004 - 2007, Intel Corporation\r
All rights reserved. This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
  Module Name:\r
\r
    UsbBus.h\r
\r
  Abstract:\r
\r
    Usb Bus Driver Binding and Bus IO Protocol\r
\r
  Revision History\r
\r
\r
**/\r
\r
#ifndef _EFI_USB_BUS_H_\r
#define _EFI_USB_BUS_H_\r
\r
\r
#include <PiDxe.h>\r
\r
#include <Protocol/Usb2HostController.h>\r
#include <Protocol/UsbHostController.h>\r
#include <Protocol/UsbIo.h>\r
#include <Protocol/DevicePath.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/UefiDriverEntryPoint.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/DevicePathLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
\r
\r
#include <IndustryStandard/Usb.h>\r
\r
typedef struct _USB_DEVICE     USB_DEVICE;\r
typedef struct _USB_INTERFACE  USB_INTERFACE;\r
typedef struct _USB_BUS        USB_BUS;\r
typedef struct _USB_HUB_API    USB_HUB_API;\r
\r
\r
#include "UsbUtility.h"\r
#include "UsbDesc.h"\r
#include "UsbHub.h"\r
#include "UsbEnumer.h"\r
\r
enum {\r
  USB_MAX_LANG_ID           = 16,\r
  USB_MAX_INTERFACE         = 16,\r
  USB_MAX_DEVICES           = 128,\r
\r
  USB_BUS_1_MILLISECOND     = 1000,\r
\r
  //\r
  // Roothub and hub's polling interval, set by experience,\r
  // The unit of roothub is 100us, means 1s as interval, and\r
  // the unit of hub is 1ms, means 64ms as interval.\r
  //\r
  USB_ROOTHUB_POLL_INTERVAL = 1000 * 10000U,\r
  USB_HUB_POLL_INTERVAL     = 64,\r
\r
  //\r
  // Wait for port stable to work, refers to specification\r
  // [USB20-9.1.2]\r
  //\r
  USB_WAIT_PORT_STABLE_STALL     = 100 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Wait for port statue reg change, set by experience\r
  //\r
  USB_WAIT_PORT_STS_CHANGE_STALL = 5 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Wait for set device address, refers to specification\r
  // [USB20-9.2.6.3, it says 2ms]\r
  //\r
  USB_SET_DEVICE_ADDRESS_STALL   = 20 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Wait for retry max packet size, set by experience\r
  //\r
  USB_RETRY_MAX_PACK_SIZE_STALL  = 100 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Wait for hub port power-on, refers to specification\r
  // [USB20-11.23.2]\r
  //\r
  USB_SET_PORT_POWER_STALL       = 2 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Wait for port reset, refers to specification\r
  // [USB20-7.1.7.5, it says 10ms for hub and 50ms for\r
  // root hub]\r
  //\r
  USB_SET_PORT_RESET_STALL       = 20 * USB_BUS_1_MILLISECOND,\r
  USB_SET_ROOT_PORT_RESET_STALL  = 50 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Wait for clear roothub port reset, set by experience\r
  //\r
  USB_CLR_ROOT_PORT_RESET_STALL  = 1 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Wait for set roothub port enable, set by experience\r
  //\r
  USB_SET_ROOT_PORT_ENABLE_STALL = 20 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Send general device request timeout, refers to\r
  // specification[USB20-11.24.1]\r
  //\r
  USB_GENERAL_DEVICE_REQUEST_TIMEOUT = 50 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Send clear feature request timeout, set by experience\r
  //\r
  USB_CLEAR_FEATURE_REQUEST_TIMEOUT  = 10 * USB_BUS_1_MILLISECOND,\r
\r
  //\r
  // Bus raises TPL to TPL_NOTIFY to serialize all its operations\r
  // to protect shared data structures.\r
  //\r
  USB_BUS_TPL               = TPL_NOTIFY,\r
\r
  USB_INTERFACE_SIGNATURE   = EFI_SIGNATURE_32 ('U', 'S', 'B', 'I'),\r
  USB_BUS_SIGNATURE         = EFI_SIGNATURE_32 ('U', 'S', 'B', 'B')\r
};\r
\r
#define USB_BIT(a)                  ((UINTN)(1 << (a)))\r
#define USB_BIT_IS_SET(Data, Bit)   ((BOOLEAN)(((Data) & (Bit)) == (Bit)))\r
\r
#define EFI_USB_BUS_PROTOCOL_GUID \\r
          {0x2B2F68CC, 0x0CD2, 0x44cf, {0x8E, 0x8B, 0xBB, 0xA2, 0x0B, 0x1B, 0x5B, 0x75}}\r
\r
#define USB_INTERFACE_FROM_USBIO(a) \\r
          CR(a, USB_INTERFACE, UsbIo, USB_INTERFACE_SIGNATURE)\r
\r
#define USB_BUS_FROM_THIS(a) \\r
          CR(a, USB_BUS, BusId, USB_BUS_SIGNATURE)\r
\r
//\r
// Used to locate USB_BUS\r
//\r
typedef struct _EFI_USB_BUS_PROTOCOL {\r
  UINT64                    Reserved;\r
} EFI_USB_BUS_PROTOCOL;\r
\r
\r
//\r
// Stands for the real USB device. Each device may\r
// has several seperately working interfaces.\r
//\r
struct _USB_DEVICE {\r
  USB_BUS                   *Bus;\r
\r
  //\r
  // Configuration information\r
  //\r
  UINT8                     Speed;\r
  UINT8                     Address;\r
  UINT8                     MaxPacket0;\r
\r
  //\r
  // The device's descriptors and its configuration\r
  //\r
  USB_DEVICE_DESC           *DevDesc;\r
  USB_CONFIG_DESC           *ActiveConfig;\r
\r
  UINT16                    LangId [USB_MAX_LANG_ID];\r
  UINT16                    TotalLangId;\r
\r
  UINT8                     NumOfInterface;\r
  USB_INTERFACE             *Interfaces [USB_MAX_INTERFACE];\r
\r
  //\r
  // Parent child relationship\r
  //\r
  EFI_USB2_HC_TRANSACTION_TRANSLATOR Translator;\r
\r
  UINT8                     ParentAddr;\r
  USB_INTERFACE             *ParentIf;\r
  UINT8                     ParentPort;       // Start at 0\r
};\r
\r
//\r
// Stands for different functions of USB device\r
//\r
struct _USB_INTERFACE {\r
  UINTN                     Signature;\r
  USB_DEVICE                *Device;\r
  USB_INTERFACE_DESC        *IfDesc;\r
  USB_INTERFACE_SETTING     *IfSetting;\r
\r
  //\r
  // Handles and protocols\r
  //\r
  EFI_HANDLE                Handle;\r
  EFI_USB_IO_PROTOCOL       UsbIo;\r
  EFI_DEVICE_PATH_PROTOCOL  *DevicePath;\r
  BOOLEAN                   IsManaged;\r
\r
  //\r
  // Hub device special data\r
  //\r
  BOOLEAN                   IsHub;\r
  USB_HUB_API               *HubApi;\r
  UINT8                     NumOfPort;\r
  EFI_EVENT                 HubNotify;\r
\r
  //\r
  // Data used only by normal hub devices\r
  //\r
  USB_ENDPOINT_DESC         *HubEp;\r
  UINT8                     *ChangeMap;\r
\r
  //\r
  // Data used only by root hub to hand over device to\r
  // companion UHCI driver if low/full speed devices are\r
  // connected to EHCI.\r
  //\r
  UINT8                     MaxSpeed;\r
};\r
\r
//\r
// Stands for the current USB Bus\r
//\r
struct _USB_BUS {\r
  UINTN                     Signature;\r
  EFI_USB_BUS_PROTOCOL      BusId;\r
\r
  //\r
  // Managed USB host controller\r
  //\r
  EFI_HANDLE                HostHandle;\r
  EFI_DEVICE_PATH_PROTOCOL  *DevicePath;\r
  EFI_USB2_HC_PROTOCOL      *Usb2Hc;\r
  EFI_USB_HC_PROTOCOL       *UsbHc;\r
\r
  //\r
  // An array of device that is on the bus. Devices[0] is\r
  // for root hub. Device with address i is at Devices[i].\r
  //\r
  USB_DEVICE                *Devices[USB_MAX_DEVICES];\r
\r
  //\r
  // USB Bus driver need to control the recursive connect policy of the bus, only those wanted\r
  // usb child device will be recursively connected.\r
  //\r
  // WantedUsbIoDPList tracks the Usb child devices which user want to recursivly fully connecte,\r
  // every wanted child device is stored in a item of the WantedUsbIoDPList, whose structrure is\r
  // DEVICE_PATH_LIST_ITEM\r
  //\r
  LIST_ENTRY                WantedUsbIoDPList;\r
\r
};\r
\r
#define USB_US_LAND_ID   0x0409\r
\r
#define DEVICE_PATH_LIST_ITEM_SIGNATURE     EFI_SIGNATURE_32('d','p','l','i')\r
typedef struct _DEVICE_PATH_LIST_ITEM{\r
  UINTN                                 Signature;\r
  LIST_ENTRY                            Link;\r
  EFI_DEVICE_PATH_PROTOCOL              *DevicePath;\r
} DEVICE_PATH_LIST_ITEM;\r
\r
typedef struct {\r
  USB_CLASS_DEVICE_PATH           UsbClass;\r
  EFI_DEVICE_PATH_PROTOCOL        End;\r
} USB_CLASS_FORMAT_DEVICE_PATH;\r
\r
EFI_STATUS\r
EFIAPI\r
UsbBusFreeUsbDPList (\r
  IN     LIST_ENTRY                                 *UsbIoDPList\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
UsbBusAddWantedUsbIoDP (\r
  IN EFI_USB_BUS_PROTOCOL         *UsbBusId,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath\r
  );\r
\r
BOOLEAN\r
EFIAPI\r
UsbBusIsWantedUsbIO (\r
  IN USB_BUS                 *Bus,\r
  IN USB_INTERFACE           *UsbIf\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
UsbBusRecursivelyConnectWantedUsbIo (\r
  IN EFI_USB_BUS_PROTOCOL         *UsbBusId\r
  );\r
\r
extern EFI_USB_IO_PROTOCOL            mUsbIoProtocol;\r
extern EFI_DRIVER_BINDING_PROTOCOL    mUsbBusDriverBinding;\r
extern EFI_COMPONENT_NAME_PROTOCOL    mUsbBusComponentName;\r
extern EFI_COMPONENT_NAME2_PROTOCOL   mUsbBusComponentName2;\r
\r
#endif\r
Commit	Line	Data
e237e7ae	1	/** @file\r
	2	Copyright (c) 2004 - 2007, Intel Corporation\r
	3	All rights reserved. This program and the accompanying materials\r
	4	are licensed and made available under the terms and conditions of the BSD License\r
	5	which accompanies this distribution. The full text of the license may be found at\r
	6	http://opensource.org/licenses/bsd-license.php\r
	7	\r
	8	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	9	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	10	\r
	11	Module Name:\r
	12	\r
	13	UsbBus.h\r
	14	\r
	15	Abstract:\r
	16	\r
	17	Usb Bus Driver Binding and Bus IO Protocol\r
	18	\r
	19	Revision History\r
	20	\r
	21	\r
	22	**/\r
	23	\r
	24	#ifndef _EFI_USB_BUS_H_\r
	25	#define _EFI_USB_BUS_H_\r
	26	\r
ed7748fe	27	\r
e237e7ae	28	#include <PiDxe.h>\r
ed7748fe	29	\r
e237e7ae	30	#include <Protocol/Usb2HostController.h>\r
	31	#include <Protocol/UsbHostController.h>\r
	32	#include <Protocol/UsbIo.h>\r
	33	#include <Protocol/DevicePath.h>\r
ed7748fe	34	\r
77442a5a	35	#include <Library/BaseLib.h>\r
e237e7ae	36	#include <Library/DebugLib.h>\r
	37	#include <Library/BaseMemoryLib.h>\r
	38	#include <Library/UefiDriverEntryPoint.h>\r
	39	#include <Library/UefiBootServicesTableLib.h>\r
	40	#include <Library/UefiLib.h>\r
	41	#include <Library/DevicePathLib.h>\r
	42	#include <Library/MemoryAllocationLib.h>\r
	43	\r
	44	\r
	45	#include <IndustryStandard/Usb.h>\r
	46	\r
	47	typedef struct _USB_DEVICE USB_DEVICE;\r
	48	typedef struct _USB_INTERFACE USB_INTERFACE;\r
	49	typedef struct _USB_BUS USB_BUS;\r
	50	typedef struct _USB_HUB_API USB_HUB_API;\r
	51	\r
	52	\r
	53	#include "UsbUtility.h"\r
	54	#include "UsbDesc.h"\r
	55	#include "UsbHub.h"\r
	56	#include "UsbEnumer.h"\r
	57	\r
	58	enum {\r
41e8ff27	59	USB_MAX_LANG_ID = 16,\r
	60	USB_MAX_INTERFACE = 16,\r
	61	USB_MAX_DEVICES = 128,\r
	62	\r
	63	USB_BUS_1_MILLISECOND = 1000,\r
	64	\r
e237e7ae	65	//\r
41e8ff27	66	// Roothub and hub's polling interval, set by experience,\r
	67	// The unit of roothub is 100us, means 1s as interval, and\r
	68	// the unit of hub is 1ms, means 64ms as interval.\r
e237e7ae	69	//\r
41e8ff27	70	USB_ROOTHUB_POLL_INTERVAL = 1000 * 10000U,\r
e237e7ae	71	USB_HUB_POLL_INTERVAL = 64,\r
	72	\r
	73	//\r
41e8ff27	74	// Wait for port stable to work, refers to specification\r
41e8ff27	75	// [USB20-9.1.2]\r
e237e7ae	76	//\r
41e8ff27	77	USB_WAIT_PORT_STABLE_STALL = 100 * USB_BUS_1_MILLISECOND,\r
41e8ff27	78	\r
ecb575d9	79	//\r
41e8ff27	80	// Wait for port statue reg change, set by experience\r
	81	//\r
	82	USB_WAIT_PORT_STS_CHANGE_STALL = 5 * USB_BUS_1_MILLISECOND,\r
	83	\r
	84	//\r
	85	// Wait for set device address, refers to specification\r
	86	// [USB20-9.2.6.3, it says 2ms]\r
	87	//\r
	88	USB_SET_DEVICE_ADDRESS_STALL = 20 * USB_BUS_1_MILLISECOND,\r
	89	\r
	90	//\r
	91	// Wait for retry max packet size, set by experience\r
	92	//\r
	93	USB_RETRY_MAX_PACK_SIZE_STALL = 100 * USB_BUS_1_MILLISECOND,\r
e237e7ae	94	\r
41e8ff27	95	//\r
	96	// Wait for hub port power-on, refers to specification\r
	97	// [USB20-11.23.2]\r
	98	//\r
	99	USB_SET_PORT_POWER_STALL = 2 * USB_BUS_1_MILLISECOND,\r
	100	\r
	101	//\r
ecb575d9	102	// Wait for port reset, refers to specification\r
ecb575d9	103	// [USB20-7.1.7.5, it says 10ms for hub and 50ms for\r
41e8ff27	104	// root hub]\r
	105	//\r
	106	USB_SET_PORT_RESET_STALL = 20 * USB_BUS_1_MILLISECOND,\r
	107	USB_SET_ROOT_PORT_RESET_STALL = 50 * USB_BUS_1_MILLISECOND,\r
	108	\r
	109	//\r
	110	// Wait for clear roothub port reset, set by experience\r
	111	//\r
	112	USB_CLR_ROOT_PORT_RESET_STALL = 1 * USB_BUS_1_MILLISECOND,\r
	113	\r
	114	//\r
	115	// Wait for set roothub port enable, set by experience\r
ecb575d9	116	//\r
41e8ff27	117	USB_SET_ROOT_PORT_ENABLE_STALL = 20 * USB_BUS_1_MILLISECOND,\r
	118	\r
	119	//\r
ecb575d9	120	// Send general device request timeout, refers to\r
41e8ff27	121	// specification[USB20-11.24.1]\r
	122	//\r
	123	USB_GENERAL_DEVICE_REQUEST_TIMEOUT = 50 * USB_BUS_1_MILLISECOND,\r
	124	\r
	125	//\r
	126	// Send clear feature request timeout, set by experience\r
	127	//\r
	128	USB_CLEAR_FEATURE_REQUEST_TIMEOUT = 10 * USB_BUS_1_MILLISECOND,\r
ecb575d9	129	\r
e237e7ae	130	//\r
	131	// Bus raises TPL to TPL_NOTIFY to serialize all its operations\r
	132	// to protect shared data structures.\r
	133	//\r
	134	USB_BUS_TPL = TPL_NOTIFY,\r
	135	\r
	136	USB_INTERFACE_SIGNATURE = EFI_SIGNATURE_32 ('U', 'S', 'B', 'I'),\r
c52fa98c	137	USB_BUS_SIGNATURE = EFI_SIGNATURE_32 ('U', 'S', 'B', 'B')\r
e237e7ae	138	};\r
	139	\r
	140	#define USB_BIT(a) ((UINTN)(1 << (a)))\r
	141	#define USB_BIT_IS_SET(Data, Bit) ((BOOLEAN)(((Data) & (Bit)) == (Bit)))\r
	142	\r
	143	#define EFI_USB_BUS_PROTOCOL_GUID \\r
84b5c78e	144	{0x2B2F68CC, 0x0CD2, 0x44cf, {0x8E, 0x8B, 0xBB, 0xA2, 0x0B, 0x1B, 0x5B, 0x75}}\r
e237e7ae	145	\r
	146	#define USB_INTERFACE_FROM_USBIO(a) \\r
	147	CR(a, USB_INTERFACE, UsbIo, USB_INTERFACE_SIGNATURE)\r
	148	\r
	149	#define USB_BUS_FROM_THIS(a) \\r
	150	CR(a, USB_BUS, BusId, USB_BUS_SIGNATURE)\r
	151	\r
	152	//\r
	153	// Used to locate USB_BUS\r
	154	//\r
	155	typedef struct _EFI_USB_BUS_PROTOCOL {\r
	156	UINT64 Reserved;\r
	157	} EFI_USB_BUS_PROTOCOL;\r
	158	\r
	159	\r
	160	//\r
	161	// Stands for the real USB device. Each device may\r
	162	// has several seperately working interfaces.\r
	163	//\r
c52fa98c	164	struct _USB_DEVICE {\r
e237e7ae	165	USB_BUS *Bus;\r
	166	\r
	167	//\r
	168	// Configuration information\r
	169	//\r
	170	UINT8 Speed;\r
	171	UINT8 Address;\r
	172	UINT8 MaxPacket0;\r
	173	\r
	174	//\r
	175	// The device's descriptors and its configuration\r
	176	//\r
	177	USB_DEVICE_DESC *DevDesc;\r
	178	USB_CONFIG_DESC *ActiveConfig;\r
	179	\r
	180	UINT16 LangId [USB_MAX_LANG_ID];\r
	181	UINT16 TotalLangId;\r
	182	\r
	183	UINT8 NumOfInterface;\r
	184	USB_INTERFACE *Interfaces [USB_MAX_INTERFACE];\r
	185	\r
	186	//\r
	187	// Parent child relationship\r
	188	//\r
	189	EFI_USB2_HC_TRANSACTION_TRANSLATOR Translator;\r
	190	\r
	191	UINT8 ParentAddr;\r
	192	USB_INTERFACE *ParentIf;\r
	193	UINT8 ParentPort; // Start at 0\r
c52fa98c	194	};\r
e237e7ae	195	\r
	196	//\r
	197	// Stands for different functions of USB device\r
	198	//\r
c52fa98c	199	struct _USB_INTERFACE {\r
e237e7ae	200	UINTN Signature;\r
	201	USB_DEVICE *Device;\r
	202	USB_INTERFACE_DESC *IfDesc;\r
	203	USB_INTERFACE_SETTING *IfSetting;\r
	204	\r
	205	//\r
	206	// Handles and protocols\r
	207	//\r
	208	EFI_HANDLE Handle;\r
	209	EFI_USB_IO_PROTOCOL UsbIo;\r
	210	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
	211	BOOLEAN IsManaged;\r
	212	\r
	213	//\r
	214	// Hub device special data\r
	215	//\r
	216	BOOLEAN IsHub;\r
	217	USB_HUB_API *HubApi;\r
	218	UINT8 NumOfPort;\r
	219	EFI_EVENT HubNotify;\r
	220	\r
	221	//\r
	222	// Data used only by normal hub devices\r
	223	//\r
	224	USB_ENDPOINT_DESC *HubEp;\r
	225	UINT8 *ChangeMap;\r
	226	\r
	227	//\r
	228	// Data used only by root hub to hand over device to\r
	229	// companion UHCI driver if low/full speed devices are\r
	230	// connected to EHCI.\r
	231	//\r
	232	UINT8 MaxSpeed;\r
c52fa98c	233	};\r
e237e7ae	234	\r
	235	//\r
	236	// Stands for the current USB Bus\r
	237	//\r
c52fa98c	238	struct _USB_BUS {\r
e237e7ae	239	UINTN Signature;\r
	240	EFI_USB_BUS_PROTOCOL BusId;\r
	241	\r
	242	//\r
	243	// Managed USB host controller\r
	244	//\r
	245	EFI_HANDLE HostHandle;\r
	246	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
	247	EFI_USB2_HC_PROTOCOL *Usb2Hc;\r
	248	EFI_USB_HC_PROTOCOL *UsbHc;\r
	249	\r
	250	//\r
	251	// An array of device that is on the bus. Devices[0] is\r
	252	// for root hub. Device with address i is at Devices[i].\r
	253	//\r
	254	USB_DEVICE *Devices[USB_MAX_DEVICES];\r
ecb575d9	255	\r
	256	//\r
	257	// USB Bus driver need to control the recursive connect policy of the bus, only those wanted\r
	258	// usb child device will be recursively connected.\r
	259	//\r
	260	// WantedUsbIoDPList tracks the Usb child devices which user want to recursivly fully connecte,\r
	261	// every wanted child device is stored in a item of the WantedUsbIoDPList, whose structrure is\r
	262	// DEVICE_PATH_LIST_ITEM\r
	263	//\r
	264	LIST_ENTRY WantedUsbIoDPList;\r
	265	\r
c52fa98c	266	};\r
e237e7ae	267	\r
ecb575d9	268	#define USB_US_LAND_ID 0x0409\r
	269	\r
	270	#define DEVICE_PATH_LIST_ITEM_SIGNATURE EFI_SIGNATURE_32('d','p','l','i')\r
	271	typedef struct _DEVICE_PATH_LIST_ITEM{\r
	272	UINTN Signature;\r
	273	LIST_ENTRY Link;\r
	274	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
	275	} DEVICE_PATH_LIST_ITEM;\r
	276	\r
	277	typedef struct {\r
	278	USB_CLASS_DEVICE_PATH UsbClass;\r
	279	EFI_DEVICE_PATH_PROTOCOL End;\r
	280	} USB_CLASS_FORMAT_DEVICE_PATH;\r
	281	\r
	282	EFI_STATUS\r
	283	EFIAPI\r
	284	UsbBusFreeUsbDPList (\r
	285	IN LIST_ENTRY *UsbIoDPList\r
	286	);\r
	287	\r
	288	EFI_STATUS\r
	289	EFIAPI\r
	290	UsbBusAddWantedUsbIoDP (\r
	291	IN EFI_USB_BUS_PROTOCOL *UsbBusId,\r
	292	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
	293	);\r
	294	\r
	295	BOOLEAN\r
	296	EFIAPI\r
	297	UsbBusIsWantedUsbIO (\r
	298	IN USB_BUS *Bus,\r
	299	IN USB_INTERFACE *UsbIf\r
	300	);\r
	301	\r
	302	EFI_STATUS\r
	303	EFIAPI\r
	304	UsbBusRecursivelyConnectWantedUsbIo (\r
	305	IN EFI_USB_BUS_PROTOCOL *UsbBusId\r
	306	);\r
	307	\r
62b9bb55	308	extern EFI_USB_IO_PROTOCOL mUsbIoProtocol;\r
	309	extern EFI_DRIVER_BINDING_PROTOCOL mUsbBusDriverBinding;\r
	310	extern EFI_COMPONENT_NAME_PROTOCOL mUsbBusComponentName;\r
	311	extern EFI_COMPONENT_NAME2_PROTOCOL mUsbBusComponentName2;\r
e237e7ae	312	\r
e237e7ae	313	#endif\r