[mirror_edk2.git] / MdePkg / Include / Protocol / DeviceIo.h

/** @file\r
  Device IO protocol as defined in the EFI 1.10 specification.\r
\r
  Device IO is used to abstract hardware access to devices. It includes\r
  memory mapped IO, IO, PCI Config space, and DMA.\r
\r
  Copyright (c) 2006 - 2008, 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
**/\r
\r
#ifndef __DEVICE_IO_H__\r
#define __DEVICE_IO_H__\r
\r
#define EFI_DEVICE_IO_PROTOCOL_GUID \\r
  { \\r
    0xaf6ac311, 0x84c3, 0x11d2, {0x8e, 0x3c, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \\r
  }\r
\r
typedef struct _EFI_DEVICE_IO_PROTOCOL EFI_DEVICE_IO_PROTOCOL;\r
\r
///\r
/// Protocol GUID name defined in EFI1.1.\r
/// \r
#define DEVICE_IO_PROTOCOL  EFI_DEVICE_IO_PROTOCOL_GUID\r
\r
///\r
/// Protocol defined in EFI1.1.\r
/// \r
typedef EFI_DEVICE_IO_PROTOCOL  EFI_DEVICE_IO_INTERFACE;\r
\r
///\r
/// Device IO Access Width \r
///\r
typedef enum {\r
  IO_UINT8  = 0,\r
  IO_UINT16 = 1,\r
  IO_UINT32 = 2,\r
  IO_UINT64 = 3,\r
  //\r
  // Below enumerations are added in "Extensible Firmware Interface Specification, \r
  // Version 1.10, Specification Update, Version 001".\r
  //\r
  MMIO_COPY_UINT8  = 4,\r
  MMIO_COPY_UINT16 = 5,\r
  MMIO_COPY_UINT32 = 6,\r
  MMIO_COPY_UINT64 = 7\r
} EFI_IO_WIDTH;\r
\r
/**                                                                 \r
  Enables a driver to access device registers in the appropriate memory or I/O space.\r
    \r
  @param  This                  A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
  @param  Width                 Signifies the width of the I/O operations.                                                                   \r
  @param  Address               The base address of the I/O operations. \r
  @param  Count                 The number of I/O operations to perform.\r
  @param  Buffer                For read operations, the destination buffer to store the results. For write\r
                                operations, the source buffer to write data from. If\r
                                Width is MMIO_COPY_UINT8, MMIO_COPY_UINT16,\r
                                MMIO_COPY_UINT32, or MMIO_COPY_UINT64, then\r
                                Buffer is interpreted as a base address of an I/O operation such as Address. \r
\r
  @retval EFI_SUCCESS           The data was read from or written to the device.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.      \r
  @retval EFI_INVALID_PARAMETER Width is invalid.\r
                                   \r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_DEVICE_IO)(\r
  IN EFI_DEVICE_IO_PROTOCOL         *This,\r
  IN EFI_IO_WIDTH                   Width,\r
  IN UINT64                         Address,\r
  IN UINTN                          Count,\r
  IN OUT VOID                       *Buffer\r
  );\r
\r
typedef struct {\r
  EFI_DEVICE_IO Read;\r
  EFI_DEVICE_IO Write;\r
} EFI_IO_ACCESS;\r
\r
/**                                                                 \r
  Provides an EFI Device Path for a PCI device with the given PCI configuration space address.\r
    \r
  @param  This                  A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
  @param  PciAddress            The PCI configuration space address of the device whose Device Path\r
                                is going to be returned.  \r
  @param  PciDevicePath         A pointer to the pointer for the EFI Device Path for PciAddress.\r
                                Memory for the Device Path is allocated from the pool.          \r
\r
  @retval EFI_SUCCESS           The PciDevicePath returns a pointer to a valid EFI Device Path.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.      \r
  @retval EFI_UNSUPPORTED       The PciAddress does not map to a valid EFI Device Path.\r
                                   \r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_PCI_DEVICE_PATH)(\r
  IN EFI_DEVICE_IO_PROTOCOL           *This,\r
  IN UINT64                           PciAddress,\r
  IN OUT EFI_DEVICE_PATH_PROTOCOL     **PciDevicePath\r
  );\r
\r
typedef enum {\r
  ///\r
  /// A read operation from system memory by a bus master.\r
  ///\r
  EfiBusMasterRead,\r
\r
  ///\r
  /// A write operation to system memory by a bus master.\r
  ///\r
  EfiBusMasterWrite,\r
  \r
  ///\r
  /// Provides both read and write access to system memory\r
  /// by both the processor and a bus master. The buffer is\r
  /// coherent from both the processor's and the bus master's\r
  /// point of view.\r
  ///\r
  EfiBusMasterCommonBuffer\r
} EFI_IO_OPERATION_TYPE;\r
\r
/**                                                                 \r
  Provides the device-specific addresses needed to access system memory.\r
    \r
  @param  This                  A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
  @param  Operation             Indicates if the bus master is going to read or write to system memory.\r
  @param  HostAddress           The system memory address to map to the device.\r
  @param  NumberOfBytes         On input the number of bytes to map.\r
  @param  DeviceAddress         The resulting map address for the bus master device to use to access the\r
                                hosts HostAddress.\r
  @param  Mapping               A resulting value to pass to Unmap().\r
\r
  @retval EFI_SUCCESS           The range was mapped for the returned NumberOfBytes.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.      \r
  @retval EFI_UNSUPPORTED       The HostAddress cannot be mapped as a common buffer.\r
  @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r
  @retval EFI_DEVICE_ERROR      The system hardware could not map the requested address.\r
                                   \r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_IO_MAP)(\r
  IN EFI_DEVICE_IO_PROTOCOL           *This,\r
  IN EFI_IO_OPERATION_TYPE            Operation,\r
  IN EFI_PHYSICAL_ADDRESS             *HostAddress,\r
  IN OUT UINTN                        *NumberOfBytes,\r
  OUT EFI_PHYSICAL_ADDRESS            *DeviceAddress,\r
  OUT VOID                            **Mapping\r
  );\r
\r
/**                                                                 \r
  Completes the Map() operation and releases any corresponding resources.\r
    \r
  @param  This                  A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
  @param  Mapping               A resulting value to pass to Unmap().\r
\r
  @retval EFI_SUCCESS           The range was mapped for the returned NumberOfBytes.\r
  @retval EFI_DEVICE_ERROR      The system hardware could not map the requested address.\r
                                   \r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_IO_UNMAP)(\r
  IN EFI_DEVICE_IO_PROTOCOL           *This,\r
  IN VOID                             *Mapping\r
  );\r
\r
/**                                                                 \r
  Allocates pages that are suitable for an EFIBusMasterCommonBuffer mapping.\r
    \r
  @param  This                  A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
  @param  Type                  The type allocation to perform.\r
  @param  MemoryType            The type of memory to allocate, EfiBootServicesData or\r
                                EfiRuntimeServicesData.\r
  @param  Pages                 The number of pages to allocate.\r
  @param  HostAddress           A pointer to store the base address of the allocated range.                                \r
\r
  @retval EFI_SUCCESS           The requested memory pages were allocated.\r
  @retval EFI_OUT_OF_RESOURCES  The memory pages could not be allocated.\r
  @retval EFI_INVALID_PARAMETER The requested memory type is invalid.\r
  @retval EFI_UNSUPPORTED       The requested HostAddress is not supported on\r
                                this platform.                               \r
                                   \r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_IO_ALLOCATE_BUFFER)(\r
  IN EFI_DEVICE_IO_PROTOCOL           *This,\r
  IN EFI_ALLOCATE_TYPE                Type,\r
  IN EFI_MEMORY_TYPE                  MemoryType,\r
  IN UINTN                            Pages,\r
  IN OUT EFI_PHYSICAL_ADDRESS         *HostAddress\r
  );\r
\r
/**                                                                 \r
  Flushes any posted write data to the device.\r
    \r
  @param  This                  A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
\r
  @retval EFI_SUCCESS           The buffers were flushed.\r
  @retval EFI_DEVICE_ERROR      The buffers were not flushed due to a hardware error.                                 \r
  \r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_IO_FLUSH)(\r
  IN EFI_DEVICE_IO_PROTOCOL  *This\r
  );\r
\r
/**                                                                 \r
  Frees pages that were allocated with AllocateBuffer().\r
    \r
  @param  This                  A pointer to the EFI_DEVICE_IO_INTERFACE instance.  \r
  @param  Pages                 The number of pages to free.\r
  @param  HostAddress           The base address of the range to free.\r
\r
  @retval EFI_SUCCESS           The requested memory pages were allocated.\r
  @retval EFI_NOT_FOUND         The requested memory pages were not allocated with\r
                                AllocateBuffer().  \r
  @retval EFI_INVALID_PARAMETER HostAddress is not page aligned or Pages is invalid.\r
  \r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_IO_FREE_BUFFER)(\r
  IN EFI_DEVICE_IO_PROTOCOL           *This,\r
  IN UINTN                            Pages,\r
  IN EFI_PHYSICAL_ADDRESS             HostAddress\r
  );\r
\r
///\r
/// This protocol provides the basic Memory, I/O, and PCI interfaces that \r
/// are used to abstract accesses to devices.\r
///\r
struct _EFI_DEVICE_IO_PROTOCOL {\r
  ///\r
  /// Allows reads and writes to memory mapped I/O space.\r
  ///\r
  EFI_IO_ACCESS           Mem;\r
  ///\r
  /// Allows reads and writes to I/O space.\r
  ///\r
  EFI_IO_ACCESS           Io;\r
  ///\r
  /// Allows reads and writes to PCI configuration space.\r
  ///\r
  EFI_IO_ACCESS           Pci;\r
  EFI_IO_MAP              Map;\r
  EFI_PCI_DEVICE_PATH     PciDevicePath;\r
  EFI_IO_UNMAP            Unmap;\r
  EFI_IO_ALLOCATE_BUFFER  AllocateBuffer;\r
  EFI_IO_FLUSH            Flush;\r
  EFI_IO_FREE_BUFFER      FreeBuffer;\r
};\r
\r
extern EFI_GUID gEfiDeviceIoProtocolGuid;\r
\r
#endif\r
Commit	Line	Data
d1f95000	1	/** @file\r
8a7d75b0	2	Device IO protocol as defined in the EFI 1.10 specification.\r
d1f95000	3	\r
	4	Device IO is used to abstract hardware access to devices. It includes\r
	5	memory mapped IO, IO, PCI Config space, and DMA.\r
	6	\r
4ca9b6c4	7	Copyright (c) 2006 - 2008, Intel Corporation \r
d1f95000	8	All rights reserved. This program and the accompanying materials \r
	9	are licensed and made available under the terms and conditions of the BSD License \r
	10	which accompanies this distribution. The full text of the license may be found at \r
	11	http://opensource.org/licenses/bsd-license.php \r
	12	\r
	13	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	14	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	15	\r
d1f95000	16	**/\r
	17	\r
	18	#ifndef __DEVICE_IO_H__\r
	19	#define __DEVICE_IO_H__\r
	20	\r
	21	#define EFI_DEVICE_IO_PROTOCOL_GUID \\r
	22	{ \\r
	23	0xaf6ac311, 0x84c3, 0x11d2, {0x8e, 0x3c, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \\r
	24	}\r
	25	\r
	26	typedef struct _EFI_DEVICE_IO_PROTOCOL EFI_DEVICE_IO_PROTOCOL;\r
	27	\r
99e8ed21	28	///\r
	29	/// Protocol GUID name defined in EFI1.1.\r
	30	/// \r
a6508c05	31	#define DEVICE_IO_PROTOCOL EFI_DEVICE_IO_PROTOCOL_GUID\r
a6508c05	32	\r
99e8ed21	33	///\r
	34	/// Protocol defined in EFI1.1.\r
	35	/// \r
a6508c05	36	typedef EFI_DEVICE_IO_PROTOCOL EFI_DEVICE_IO_INTERFACE;\r
a6508c05	37	\r
9319d2c2 LG	38	///\r
	39	/// Device IO Access Width \r
	40	///\r
d1f95000	41	typedef enum {\r
0365b951 LG	42	IO_UINT8 = 0,\r
	43	IO_UINT16 = 1,\r
	44	IO_UINT32 = 2,\r
	45	IO_UINT64 = 3,\r
2f320412	46	//\r
4e43ee51	47	// Below enumerations are added in "Extensible Firmware Interface Specification, \r
4e43ee51	48	// Version 1.10, Specification Update, Version 001".\r
2f320412	49	//\r
0365b951 LG	50	MMIO_COPY_UINT8 = 4,\r
	51	MMIO_COPY_UINT16 = 5,\r
	52	MMIO_COPY_UINT32 = 6,\r
	53	MMIO_COPY_UINT64 = 7\r
d1f95000	54	} EFI_IO_WIDTH;\r
	55	\r
	56	/** \r
	57	Enables a driver to access device registers in the appropriate memory or I/O space.\r
	58	\r
	59	@param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
	60	@param Width Signifies the width of the I/O operations. \r
	61	@param Address The base address of the I/O operations. \r
	62	@param Count The number of I/O operations to perform.\r
	63	@param Buffer For read operations, the destination buffer to store the results. For write\r
73fa61fc	64	operations, the source buffer to write data from. If\r
0365b951 LG	65	Width is MMIO_COPY_UINT8, MMIO_COPY_UINT16,\r
	66	MMIO_COPY_UINT32, or MMIO_COPY_UINT64, then\r
	67	Buffer is interpreted as a base address of an I/O operation such as Address. \r
d1f95000	68	\r
	69	@retval EFI_SUCCESS The data was read from or written to the device.\r
	70	@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. \r
	71	@retval EFI_INVALID_PARAMETER Width is invalid.\r
	72	\r
	73	**/\r
	74	typedef\r
	75	EFI_STATUS\r
8b13229b	76	(EFIAPI *EFI_DEVICE_IO)(\r
d1f95000	77	IN EFI_DEVICE_IO_PROTOCOL *This,\r
	78	IN EFI_IO_WIDTH Width,\r
	79	IN UINT64 Address,\r
	80	IN UINTN Count,\r
	81	IN OUT VOID *Buffer\r
	82	);\r
	83	\r
	84	typedef struct {\r
	85	EFI_DEVICE_IO Read;\r
	86	EFI_DEVICE_IO Write;\r
	87	} EFI_IO_ACCESS;\r
	88	\r
	89	/** \r
	90	Provides an EFI Device Path for a PCI device with the given PCI configuration space address.\r
	91	\r
	92	@param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
	93	@param PciAddress The PCI configuration space address of the device whose Device Path\r
	94	is going to be returned. \r
	95	@param PciDevicePath A pointer to the pointer for the EFI Device Path for PciAddress.\r
	96	Memory for the Device Path is allocated from the pool. \r
	97	\r
	98	@retval EFI_SUCCESS The PciDevicePath returns a pointer to a valid EFI Device Path.\r
	99	@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. \r
	100	@retval EFI_UNSUPPORTED The PciAddress does not map to a valid EFI Device Path.\r
	101	\r
	102	**/\r
	103	typedef\r
	104	EFI_STATUS\r
8b13229b	105	(EFIAPI *EFI_PCI_DEVICE_PATH)(\r
d1f95000	106	IN EFI_DEVICE_IO_PROTOCOL *This,\r
	107	IN UINT64 PciAddress,\r
	108	IN OUT EFI_DEVICE_PATH_PROTOCOL **PciDevicePath\r
	109	);\r
	110	\r
	111	typedef enum {\r
f1004231 LG	112	///\r
	113	/// A read operation from system memory by a bus master.\r
	114	///\r
d1f95000	115	EfiBusMasterRead,\r
f1004231 LG	116	\r
	117	///\r
	118	/// A write operation to system memory by a bus master.\r
	119	///\r
d1f95000	120	EfiBusMasterWrite,\r
f1004231 LG	121	\r
	122	///\r
	123	/// Provides both read and write access to system memory\r
	124	/// by both the processor and a bus master. The buffer is\r
cd2ed84a	125	/// coherent from both the processor's and the bus master's\r
f1004231 LG	126	/// point of view.\r
f1004231 LG	127	///\r
d1f95000	128	EfiBusMasterCommonBuffer\r
	129	} EFI_IO_OPERATION_TYPE;\r
	130	\r
	131	/** \r
	132	Provides the device-specific addresses needed to access system memory.\r
	133	\r
	134	@param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
	135	@param Operation Indicates if the bus master is going to read or write to system memory.\r
	136	@param HostAddress The system memory address to map to the device.\r
	137	@param NumberOfBytes On input the number of bytes to map.\r
	138	@param DeviceAddress The resulting map address for the bus master device to use to access the\r
	139	hosts HostAddress.\r
	140	@param Mapping A resulting value to pass to Unmap().\r
	141	\r
	142	@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r
	143	@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. \r
	144	@retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.\r
	145	@retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r
	146	@retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r
	147	\r
	148	**/\r
	149	typedef\r
	150	EFI_STATUS\r
8b13229b	151	(EFIAPI *EFI_IO_MAP)(\r
d1f95000	152	IN EFI_DEVICE_IO_PROTOCOL *This,\r
	153	IN EFI_IO_OPERATION_TYPE Operation,\r
	154	IN EFI_PHYSICAL_ADDRESS *HostAddress,\r
	155	IN OUT UINTN *NumberOfBytes,\r
	156	OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r
	157	OUT VOID **Mapping\r
	158	);\r
	159	\r
	160	/** \r
	161	Completes the Map() operation and releases any corresponding resources.\r
	162	\r
	163	@param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
	164	@param Mapping A resulting value to pass to Unmap().\r
	165	\r
	166	@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r
	167	@retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r
	168	\r
	169	**/\r
	170	typedef\r
	171	EFI_STATUS\r
8b13229b	172	(EFIAPI *EFI_IO_UNMAP)(\r
d1f95000	173	IN EFI_DEVICE_IO_PROTOCOL *This,\r
	174	IN VOID *Mapping\r
	175	);\r
	176	\r
	177	/** \r
	178	Allocates pages that are suitable for an EFIBusMasterCommonBuffer mapping.\r
	179	\r
	180	@param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
	181	@param Type The type allocation to perform.\r
	182	@param MemoryType The type of memory to allocate, EfiBootServicesData or\r
	183	EfiRuntimeServicesData.\r
	184	@param Pages The number of pages to allocate.\r
	185	@param HostAddress A pointer to store the base address of the allocated range. \r
	186	\r
	187	@retval EFI_SUCCESS The requested memory pages were allocated.\r
	188	@retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r
	189	@retval EFI_INVALID_PARAMETER The requested memory type is invalid.\r
	190	@retval EFI_UNSUPPORTED The requested HostAddress is not supported on\r
	191	this platform. \r
	192	\r
	193	**/\r
	194	typedef\r
	195	EFI_STATUS\r
8b13229b	196	(EFIAPI *EFI_IO_ALLOCATE_BUFFER)(\r
d1f95000	197	IN EFI_DEVICE_IO_PROTOCOL *This,\r
	198	IN EFI_ALLOCATE_TYPE Type,\r
	199	IN EFI_MEMORY_TYPE MemoryType,\r
	200	IN UINTN Pages,\r
	201	IN OUT EFI_PHYSICAL_ADDRESS *HostAddress\r
	202	);\r
	203	\r
	204	/** \r
	205	Flushes any posted write data to the device.\r
	206	\r
	207	@param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.\r
	208	\r
	209	@retval EFI_SUCCESS The buffers were flushed.\r
	210	@retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware error. \r
	211	\r
	212	**/\r
	213	typedef\r
	214	EFI_STATUS\r
8b13229b	215	(EFIAPI *EFI_IO_FLUSH)(\r
d1f95000	216	IN EFI_DEVICE_IO_PROTOCOL *This\r
	217	);\r
	218	\r
	219	/** \r
	220	Frees pages that were allocated with AllocateBuffer().\r
	221	\r
	222	@param This A pointer to the EFI_DEVICE_IO_INTERFACE instance. \r
	223	@param Pages The number of pages to free.\r
	224	@param HostAddress The base address of the range to free.\r
	225	\r
	226	@retval EFI_SUCCESS The requested memory pages were allocated.\r
	227	@retval EFI_NOT_FOUND The requested memory pages were not allocated with\r
	228	AllocateBuffer(). \r
	229	@retval EFI_INVALID_PARAMETER HostAddress is not page aligned or Pages is invalid.\r
	230	\r
	231	**/\r
	232	typedef\r
	233	EFI_STATUS\r
8b13229b	234	(EFIAPI *EFI_IO_FREE_BUFFER)(\r
d1f95000	235	IN EFI_DEVICE_IO_PROTOCOL *This,\r
	236	IN UINTN Pages,\r
	237	IN EFI_PHYSICAL_ADDRESS HostAddress\r
	238	);\r
	239	\r
44717a39	240	///\r
	241	/// This protocol provides the basic Memory, I/O, and PCI interfaces that \r
	242	/// are used to abstract accesses to devices.\r
	243	///\r
d1f95000	244	struct _EFI_DEVICE_IO_PROTOCOL {\r
3354353d	245	///\r
	246	/// Allows reads and writes to memory mapped I/O space.\r
	247	///\r
d1f95000	248	EFI_IO_ACCESS Mem;\r
3354353d	249	///\r
	250	/// Allows reads and writes to I/O space.\r
	251	///\r
d1f95000	252	EFI_IO_ACCESS Io;\r
3354353d	253	///\r
	254	/// Allows reads and writes to PCI configuration space.\r
	255	///\r
d1f95000	256	EFI_IO_ACCESS Pci;\r
	257	EFI_IO_MAP Map;\r
	258	EFI_PCI_DEVICE_PATH PciDevicePath;\r
	259	EFI_IO_UNMAP Unmap;\r
	260	EFI_IO_ALLOCATE_BUFFER AllocateBuffer;\r
	261	EFI_IO_FLUSH Flush;\r
	262	EFI_IO_FREE_BUFFER FreeBuffer;\r
	263	};\r
	264	\r
	265	extern EFI_GUID gEfiDeviceIoProtocolGuid;\r
	266	\r
	267	#endif\r