[mirror_edk2.git] / MdePkg / Include / Protocol / BlockIo2.h

/** @file\r
  Block IO2 protocol as defined in the UEFI 2.3.1 specification.\r
\r
  The Block IO2 protocol defines an extension to the Block IO protocol which\r
  enables the ability to read and write data at a block level in a non-blocking\r
  manner.\r
\r
  Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef __BLOCK_IO2_H__\r
#define __BLOCK_IO2_H__\r
\r
#include <Protocol/BlockIo.h>\r
\r
#define EFI_BLOCK_IO2_PROTOCOL_GUID \\r
  { \\r
    0xa77b2472, 0xe282, 0x4e9f, {0xa2, 0x45, 0xc2, 0xc0, 0xe2, 0x7b, 0xbc, 0xc1} \\r
  }\r
\r
typedef struct _EFI_BLOCK_IO2_PROTOCOL  EFI_BLOCK_IO2_PROTOCOL;\r
\r
/**\r
  The struct of Block IO2 Token.\r
**/\r
typedef struct {\r
\r
  ///\r
  /// If Event is NULL, then blocking I/O is performed.If Event is not NULL and\r
  /// non-blocking I/O is supported, then non-blocking I/O is performed, and\r
  /// Event will be signaled when the read request is completed.\r
  ///\r
  EFI_EVENT               Event;\r
\r
  ///\r
  /// Defines whether or not the signaled event encountered an error.\r
  ///\r
  EFI_STATUS              TransactionStatus;\r
} EFI_BLOCK_IO2_TOKEN;\r
\r
\r
/**\r
  Reset the block device hardware.\r
\r
  @param[in]  This                 Indicates a pointer to the calling context.\r
  @param[in]  ExtendedVerification Indicates that the driver may perform a more\r
                                   exhausive verification operation of the device\r
                                   during reset.\r
\r
  @retval EFI_SUCCESS          The device was reset.\r
  @retval EFI_DEVICE_ERROR     The device is not functioning properly and could\r
                               not be reset.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_BLOCK_RESET_EX) (\r
  IN EFI_BLOCK_IO2_PROTOCOL  *This,\r
  IN BOOLEAN                 ExtendedVerification\r
  );\r
\r
/**\r
  Read BufferSize bytes from Lba into Buffer.\r
\r
  This function reads the requested number of blocks from the device. All the\r
  blocks are read, or an error is returned.\r
  If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_or EFI_MEDIA_CHANGED is returned and\r
  non-blocking I/O is being used, the Event associated with this request will\r
  not be signaled.\r
\r
  @param[in]       This       Indicates a pointer to the calling context.\r
  @param[in]       MediaId    Id of the media, changes every time the media is\r
                              replaced.\r
  @param[in]       Lba        The starting Logical Block Address to read from.\r
  @param[in, out]  Token      A pointer to the token associated with the transaction.\r
  @param[in]       BufferSize Size of Buffer, must be a multiple of device block size.\r
  @param[out]      Buffer     A pointer to the destination buffer for the data. The\r
                              caller is responsible for either having implicit or\r
                              explicit ownership of the buffer.\r
\r
  @retval EFI_SUCCESS           The read request was queued if Token->Event is\r
                                not NULL.The data was read correctly from the\r
                                device if the Token->Event is NULL.\r
  @retval EFI_DEVICE_ERROR      The device reported an error while performing\r
                                the read.\r
  @retval EFI_NO_MEDIA          There is no media in the device.\r
  @retval EFI_MEDIA_CHANGED     The MediaId is not for the current media.\r
  @retval EFI_BAD_BUFFER_SIZE   The BufferSize parameter is not a multiple of the\r
                                intrinsic block size of the device.\r
  @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,\r
                                or the buffer is not on proper alignment.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack\r
                                of resources.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_BLOCK_READ_EX) (\r
  IN     EFI_BLOCK_IO2_PROTOCOL *This,\r
  IN     UINT32                 MediaId,\r
  IN     EFI_LBA                LBA,\r
  IN OUT EFI_BLOCK_IO2_TOKEN    *Token,\r
  IN     UINTN                  BufferSize,\r
     OUT VOID                  *Buffer\r
  );\r
\r
/**\r
  Write BufferSize bytes from Lba into Buffer.\r
\r
  This function writes the requested number of blocks to the device. All blocks\r
  are written, or an error is returned.If EFI_DEVICE_ERROR, EFI_NO_MEDIA,\r
  EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED is returned and non-blocking I/O is\r
  being used, the Event associated with this request will not be signaled.\r
\r
  @param[in]       This       Indicates a pointer to the calling context.\r
  @param[in]       MediaId    The media ID that the write request is for.\r
  @param[in]       Lba        The starting logical block address to be written. The\r
                              caller is responsible for writing to only legitimate\r
                              locations.\r
  @param[in, out]  Token      A pointer to the token associated with the transaction.\r
  @param[in]       BufferSize Size of Buffer, must be a multiple of device block size.\r
  @param[in]       Buffer     A pointer to the source buffer for the data.\r
\r
  @retval EFI_SUCCESS           The write request was queued if Event is not NULL.\r
                                The data was written correctly to the device if\r
                                the Event is NULL.\r
  @retval EFI_WRITE_PROTECTED   The device can not be written to.\r
  @retval EFI_NO_MEDIA          There is no media in the device.\r
  @retval EFI_MEDIA_CHNAGED     The MediaId does not matched the current device.\r
  @retval EFI_DEVICE_ERROR      The device reported an error while performing the write.\r
  @retval EFI_BAD_BUFFER_SIZE   The Buffer was not a multiple of the block size of the device.\r
  @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,\r
                                or the buffer is not on proper alignment.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack\r
                                of resources.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_BLOCK_WRITE_EX) (\r
  IN     EFI_BLOCK_IO2_PROTOCOL  *This,\r
  IN     UINT32                 MediaId,\r
  IN     EFI_LBA                LBA,\r
  IN OUT EFI_BLOCK_IO2_TOKEN    *Token,\r
  IN     UINTN                  BufferSize,\r
  IN     VOID                   *Buffer\r
  );\r
\r
/**\r
  Flush the Block Device.\r
\r
  If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED\r
  is returned and non-blocking I/O is being used, the Event associated with\r
  this request will not be signaled.\r
\r
  @param[in]      This     Indicates a pointer to the calling context.\r
  @param[in,out]  Token    A pointer to the token associated with the transaction\r
\r
  @retval EFI_SUCCESS          The flush request was queued if Event is not NULL.\r
                               All outstanding data was written correctly to the\r
                               device if the Event is NULL.\r
  @retval EFI_DEVICE_ERROR     The device reported an error while writting back\r
                               the data.\r
  @retval EFI_WRITE_PROTECTED  The device cannot be written to.\r
  @retval EFI_NO_MEDIA         There is no media in the device.\r
  @retval EFI_MEDIA_CHANGED    The MediaId is not for the current media.\r
  @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r
                               of resources.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_BLOCK_FLUSH_EX) (\r
  IN     EFI_BLOCK_IO2_PROTOCOL   *This,\r
  IN OUT EFI_BLOCK_IO2_TOKEN      *Token\r
  );\r
\r
///\r
///  The Block I/O2 protocol defines an extension to the Block I/O protocol which\r
///  enables the ability to read and write data at a block level in a non-blocking\r
//   manner.\r
///\r
struct _EFI_BLOCK_IO2_PROTOCOL {\r
  ///\r
  /// A pointer to the EFI_BLOCK_IO_MEDIA data for this device.\r
  /// Type EFI_BLOCK_IO_MEDIA is defined in BlockIo.h.\r
  ///\r
  EFI_BLOCK_IO_MEDIA      *Media;\r
\r
  EFI_BLOCK_RESET_EX      Reset;\r
  EFI_BLOCK_READ_EX       ReadBlocksEx;\r
  EFI_BLOCK_WRITE_EX      WriteBlocksEx;\r
  EFI_BLOCK_FLUSH_EX      FlushBlocksEx;\r
};\r
\r
extern EFI_GUID gEfiBlockIo2ProtocolGuid;\r
\r
#endif\r
\r
Commit	Line	Data
	1	/** @file\r
	2	Block IO2 protocol as defined in the UEFI 2.3.1 specification.\r
	3	\r
	4	The Block IO2 protocol defines an extension to the Block IO protocol which\r
	5	enables the ability to read and write data at a block level in a non-blocking\r
	6	manner.\r
	7	\r
	8	Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>\r
	9	SPDX-License-Identifier: BSD-2-Clause-Patent\r
	10	\r
	11	**/\r
	12	\r
	13	#ifndef __BLOCK_IO2_H__\r
	14	#define __BLOCK_IO2_H__\r
	15	\r
	16	#include <Protocol/BlockIo.h>\r
	17	\r
	18	#define EFI_BLOCK_IO2_PROTOCOL_GUID \\r
	19	{ \\r
	20	0xa77b2472, 0xe282, 0x4e9f, {0xa2, 0x45, 0xc2, 0xc0, 0xe2, 0x7b, 0xbc, 0xc1} \\r
	21	}\r
	22	\r
	23	typedef struct _EFI_BLOCK_IO2_PROTOCOL EFI_BLOCK_IO2_PROTOCOL;\r
	24	\r
	25	/**\r
	26	The struct of Block IO2 Token.\r
	27	**/\r
	28	typedef struct {\r
	29	\r
	30	///\r
	31	/// If Event is NULL, then blocking I/O is performed.If Event is not NULL and\r
	32	/// non-blocking I/O is supported, then non-blocking I/O is performed, and\r
	33	/// Event will be signaled when the read request is completed.\r
	34	///\r
	35	EFI_EVENT Event;\r
	36	\r
	37	///\r
	38	/// Defines whether or not the signaled event encountered an error.\r
	39	///\r
	40	EFI_STATUS TransactionStatus;\r
	41	} EFI_BLOCK_IO2_TOKEN;\r
	42	\r
	43	\r
	44	/**\r
	45	Reset the block device hardware.\r
	46	\r
	47	@param[in] This Indicates a pointer to the calling context.\r
	48	@param[in] ExtendedVerification Indicates that the driver may perform a more\r
	49	exhausive verification operation of the device\r
	50	during reset.\r
	51	\r
	52	@retval EFI_SUCCESS The device was reset.\r
	53	@retval EFI_DEVICE_ERROR The device is not functioning properly and could\r
	54	not be reset.\r
	55	\r
	56	**/\r
	57	typedef\r
	58	EFI_STATUS\r
	59	(EFIAPI *EFI_BLOCK_RESET_EX) (\r
	60	IN EFI_BLOCK_IO2_PROTOCOL *This,\r
	61	IN BOOLEAN ExtendedVerification\r
	62	);\r
	63	\r
	64	/**\r
	65	Read BufferSize bytes from Lba into Buffer.\r
	66	\r
	67	This function reads the requested number of blocks from the device. All the\r
	68	blocks are read, or an error is returned.\r
	69	If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_or EFI_MEDIA_CHANGED is returned and\r
	70	non-blocking I/O is being used, the Event associated with this request will\r
	71	not be signaled.\r
	72	\r
	73	@param[in] This Indicates a pointer to the calling context.\r
	74	@param[in] MediaId Id of the media, changes every time the media is\r
	75	replaced.\r
	76	@param[in] Lba The starting Logical Block Address to read from.\r
	77	@param[in, out] Token A pointer to the token associated with the transaction.\r
	78	@param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r
	79	@param[out] Buffer A pointer to the destination buffer for the data. The\r
	80	caller is responsible for either having implicit or\r
	81	explicit ownership of the buffer.\r
	82	\r
	83	@retval EFI_SUCCESS The read request was queued if Token->Event is\r
	84	not NULL.The data was read correctly from the\r
	85	device if the Token->Event is NULL.\r
	86	@retval EFI_DEVICE_ERROR The device reported an error while performing\r
	87	the read.\r
	88	@retval EFI_NO_MEDIA There is no media in the device.\r
	89	@retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r
	90	@retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the\r
	91	intrinsic block size of the device.\r
	92	@retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,\r
	93	or the buffer is not on proper alignment.\r
	94	@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r
	95	of resources.\r
	96	**/\r
	97	typedef\r
	98	EFI_STATUS\r
	99	(EFIAPI *EFI_BLOCK_READ_EX) (\r
	100	IN EFI_BLOCK_IO2_PROTOCOL *This,\r
	101	IN UINT32 MediaId,\r
	102	IN EFI_LBA LBA,\r
	103	IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r
	104	IN UINTN BufferSize,\r
	105	OUT VOID *Buffer\r
	106	);\r
	107	\r
	108	/**\r
	109	Write BufferSize bytes from Lba into Buffer.\r
	110	\r
	111	This function writes the requested number of blocks to the device. All blocks\r
	112	are written, or an error is returned.If EFI_DEVICE_ERROR, EFI_NO_MEDIA,\r
	113	EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED is returned and non-blocking I/O is\r
	114	being used, the Event associated with this request will not be signaled.\r
	115	\r
	116	@param[in] This Indicates a pointer to the calling context.\r
	117	@param[in] MediaId The media ID that the write request is for.\r
	118	@param[in] Lba The starting logical block address to be written. The\r
	119	caller is responsible for writing to only legitimate\r
	120	locations.\r
	121	@param[in, out] Token A pointer to the token associated with the transaction.\r
	122	@param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r
	123	@param[in] Buffer A pointer to the source buffer for the data.\r
	124	\r
	125	@retval EFI_SUCCESS The write request was queued if Event is not NULL.\r
	126	The data was written correctly to the device if\r
	127	the Event is NULL.\r
	128	@retval EFI_WRITE_PROTECTED The device can not be written to.\r
	129	@retval EFI_NO_MEDIA There is no media in the device.\r
	130	@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r
	131	@retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r
	132	@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r
	133	@retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,\r
	134	or the buffer is not on proper alignment.\r
	135	@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r
	136	of resources.\r
	137	\r
	138	**/\r
	139	typedef\r
	140	EFI_STATUS\r
	141	(EFIAPI *EFI_BLOCK_WRITE_EX) (\r
	142	IN EFI_BLOCK_IO2_PROTOCOL *This,\r
	143	IN UINT32 MediaId,\r
	144	IN EFI_LBA LBA,\r
	145	IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r
	146	IN UINTN BufferSize,\r
	147	IN VOID *Buffer\r
	148	);\r
	149	\r
	150	/**\r
	151	Flush the Block Device.\r
	152	\r
	153	If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED\r
	154	is returned and non-blocking I/O is being used, the Event associated with\r
	155	this request will not be signaled.\r
	156	\r
	157	@param[in] This Indicates a pointer to the calling context.\r
	158	@param[in,out] Token A pointer to the token associated with the transaction\r
	159	\r
	160	@retval EFI_SUCCESS The flush request was queued if Event is not NULL.\r
	161	All outstanding data was written correctly to the\r
	162	device if the Event is NULL.\r
	163	@retval EFI_DEVICE_ERROR The device reported an error while writting back\r
	164	the data.\r
	165	@retval EFI_WRITE_PROTECTED The device cannot be written to.\r
	166	@retval EFI_NO_MEDIA There is no media in the device.\r
	167	@retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r
	168	@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r
	169	of resources.\r
	170	\r
	171	**/\r
	172	typedef\r
	173	EFI_STATUS\r
	174	(EFIAPI *EFI_BLOCK_FLUSH_EX) (\r
	175	IN EFI_BLOCK_IO2_PROTOCOL *This,\r
	176	IN OUT EFI_BLOCK_IO2_TOKEN *Token\r
	177	);\r
	178	\r
	179	///\r
	180	/// The Block I/O2 protocol defines an extension to the Block I/O protocol which\r
	181	/// enables the ability to read and write data at a block level in a non-blocking\r
	182	// manner.\r
	183	///\r
	184	struct _EFI_BLOCK_IO2_PROTOCOL {\r
	185	///\r
	186	/// A pointer to the EFI_BLOCK_IO_MEDIA data for this device.\r
	187	/// Type EFI_BLOCK_IO_MEDIA is defined in BlockIo.h.\r
	188	///\r
	189	EFI_BLOCK_IO_MEDIA *Media;\r
	190	\r
	191	EFI_BLOCK_RESET_EX Reset;\r
	192	EFI_BLOCK_READ_EX ReadBlocksEx;\r
	193	EFI_BLOCK_WRITE_EX WriteBlocksEx;\r
	194	EFI_BLOCK_FLUSH_EX FlushBlocksEx;\r
	195	};\r
	196	\r
	197	extern EFI_GUID gEfiBlockIo2ProtocolGuid;\r
	198	\r
	199	#endif\r
	200	\r