[mirror_edk2.git] / Vlv2DeviceRefCodePkg / ValleyView2Soc / SouthCluster / Include / Ppi / PeiBlockIo.h

/** @file\r
  Block IO protocol as defined in the UEFI 2.0 specification.\r
\r
  The Block IO protocol is used to abstract block devices like hard drives,\r
  DVD-ROMs and floppy drives.\r
\r
  Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
  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 __PEI_BLOCK_IO_H__\r
#define __PEI_BLOCK_IO_H__\r
// {BC5FA650-EDBB-4d0d-B3A3-D98907F847DF}\r
#ifndef ECP_FLAG\r
#define PEI_BLOCK_IO_PPI_GUID \\r
  {  \\r
    0xbc5fa650, 0xedbb, 0x4d0d, { 0xb3, 0xa3, 0xd9, 0x89, 0x7, 0xf8, 0x47, 0xdf }  \\r
  }\r
#endif\r
typedef struct _PEI_BLOCK_IO_PPI  PEI_BLOCK_IO_PPI;\r
\r
\r
/**\r
  Reset the Block Device.\r
\r
  @param  This                 Indicates a pointer to the calling context.\r
  @param  ExtendedVerification Driver may perform diagnostics on 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 *PEI_BLOCK_RESET)(\r
  IN PEI_BLOCK_IO_PPI               *This,\r
  IN BOOLEAN                        ExtendedVerification\r
  );\r
\r
/**\r
  Read BufferSize bytes from Lba into Buffer.\r
\r
  @param  This       Indicates a pointer to the calling context.\r
  @param  MediaId    Id of the media, changes every time the media is replaced.\r
  @param  Lba        The starting Logical Block Address to read from\r
  @param  BufferSize Size of Buffer, must be a multiple of device block size.\r
  @param  Buffer     A pointer to the destination buffer for the data. The caller is\r
                     responsible for either having implicit or explicit ownership of the buffer.\r
\r
  @retval EFI_SUCCESS           The data was read correctly from the device.\r
  @retval EFI_DEVICE_ERROR      The device reported an error while performing the read.\r
  @retval EFI_NO_MEDIA          There is no media in the device.\r
  @retval EFI_MEDIA_CHANGED     The MediaId does not matched the current device.\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 read request contains LBAs that are not valid,\r
                                or the buffer is not on proper alignment.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *PEI_BLOCK_READ)(\r
  IN  EFI_PEI_SERVICES              **PeiServices,\r
  IN PEI_BLOCK_IO_PPI               *This,\r
  IN UINT32                         MediaId,\r
  IN EFI_LBA                        Lba,\r
  IN UINTN                          BufferSize,\r
  OUT VOID                          *Buffer\r
  );\r
\r
/**\r
  Write BufferSize bytes from Lba into Buffer.\r
\r
  @param  This       Indicates a pointer to the calling context.\r
  @param  MediaId    The media ID that the write request is for.\r
  @param  Lba        The starting logical block address to be written. The caller is\r
                     responsible for writing to only legitimate locations.\r
  @param  BufferSize Size of Buffer, must be a multiple of device block size.\r
  @param  Buffer     A pointer to the source buffer for the data.\r
\r
  @retval EFI_SUCCESS           The data was written correctly to the device.\r
  @retval EFI_WRITE_PROTECTED   The device can not be written to.\r
  @retval EFI_DEVICE_ERROR      The device reported an error while performing the write.\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_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
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *PEI_BLOCK_WRITE)(\r
  IN  EFI_PEI_SERVICES              **PeiServices,\r
  IN PEI_BLOCK_IO_PPI               *This,\r
  IN UINT32                         MediaId,\r
  IN EFI_LBA                        Lba,\r
  IN UINTN                          BufferSize,\r
  IN VOID                           *Buffer\r
  );\r
\r
/**\r
  Flush the Block Device.\r
\r
  @param  This              Indicates a pointer to the calling context.\r
\r
  @retval EFI_SUCCESS       All outstanding data was written to the device\r
  @retval EFI_DEVICE_ERROR  The device reported an error while writting back the data\r
  @retval EFI_NO_MEDIA      There is no media in the device.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *PEI_BLOCK_FLUSH)(\r
  IN  PEI_BLOCK_IO_PPI           *This\r
  );\r
\r
/**\r
  Block IO read only mode data and updated only via members of BlockIO\r
**/\r
typedef struct {\r
  ///\r
  /// The curent media Id. If the media changes, this value is changed.\r
  ///\r
  UINT32  MediaId;\r
\r
  ///\r
  /// TRUE if the media is removable; otherwise, FALSE.\r
  ///\r
  BOOLEAN RemovableMedia;\r
\r
  ///\r
  /// TRUE if there is a media currently present in the device;\r
  /// othersise, FALSE. THis field shows the media present status\r
  /// as of the most recent ReadBlocks() or WriteBlocks() call.\r
  ///\r
  BOOLEAN MediaPresent;\r
\r
  ///\r
  /// TRUE if LBA 0 is the first block of a partition; otherwise\r
  /// FALSE. For media with only one partition this would be TRUE.\r
  ///\r
  BOOLEAN LogicalPartition;\r
\r
  ///\r
  /// TRUE if the media is marked read-only otherwise, FALSE.\r
  /// This field shows the read-only status as of the most recent WriteBlocks () call.\r
  ///\r
  BOOLEAN ReadOnly;\r
\r
  ///\r
  /// TRUE if the WriteBlock () function caches write data.\r
  ///\r
  BOOLEAN WriteCaching;\r
\r
  ///\r
  /// The intrinsic block size of the device. If the media changes, then\r
  /// this field is updated.\r
  ///\r
  UINT32  BlockSize;\r
\r
  ///\r
  /// Supplies the alignment requirement for any buffer to read or write block(s).\r
  ///\r
  UINT32  IoAlign;\r
\r
  ///\r
  /// The last logical block address on the device.\r
  /// If the media changes, then this field is updated.\r
  ///\r
  EFI_LBA LastBlock;\r
\r
  ///\r
  /// Only present if EFI_BLOCK_IO_PROTOCOL.Revision is greater than or equal to\r
  /// EFI_BLOCK_IO_PROTOCOL_REVISION2. Returns the first LBA is aligned to\r
  /// a physical block boundary.\r
  ///\r
  EFI_LBA LowestAlignedLba;\r
\r
  ///\r
  /// Only present if EFI_BLOCK_IO_PROTOCOL.Revision is greater than or equal to\r
  /// EFI_BLOCK_IO_PROTOCOL_REVISION2. Returns the number of logical blocks\r
  /// per physical block.\r
  ///\r
  UINT32 LogicalBlocksPerPhysicalBlock;\r
\r
  ///\r
  /// Only present if EFI_BLOCK_IO_PROTOCOL.Revision is greater than or equal to\r
  /// EFI_BLOCK_IO_PROTOCOL_REVISION3. Returns the optimal transfer length\r
  /// granularity as a number of logical blocks.\r
  ///\r
  UINT32 OptimalTransferLengthGranularity;\r
#ifdef ECP_FLAG\r
} PEI_BLOCK_IO_MEDIA2;\r
#else\r
} PEI_BLOCK_IO_MEDIA;\r
#endif\r
#define EFI_BLOCK_IO_PROTOCOL_REVISION  0x00010000\r
#define EFI_BLOCK_IO_PROTOCOL_REVISION2 0x00020001\r
#define EFI_BLOCK_IO_PROTOCOL_REVISION3 0x00020031\r
\r
///\r
/// Revision defined in EFI1.1.\r
///\r
#define EFI_BLOCK_IO_INTERFACE_REVISION   EFI_BLOCK_IO_PROTOCOL_REVISION\r
\r
///\r
///  This protocol provides control over block devices.\r
///\r
struct _PEI_BLOCK_IO_PPI {\r
  ///\r
  /// The revision to which the block IO interface adheres. All future\r
  /// revisions must be backwards compatible. If a future version is not\r
  /// back wards compatible, it is not the same GUID.\r
  ///\r
  UINT64              Revision;\r
  ///\r
  /// Pointer to the EFI_BLOCK_IO_MEDIA data for this device.\r
  ///\r
  PEI_BLOCK_IO_MEDIA  *Media;\r
  PEI_BLOCK_RESET     Reset;\r
  PEI_BLOCK_READ      ReadBlocks;\r
  PEI_BLOCK_WRITE     WriteBlocks;\r
  PEI_BLOCK_FLUSH     FlushBlocks;\r
};\r
\r
//extern EFI_GUID gEfiBlockIoProtocolGuid;\r
extern EFI_GUID gPeiBlockIoPpiGuid;\r
#endif\r
Commit	Line	Data
3cbfba02 DW	1	/** @file\r
	2	Block IO protocol as defined in the UEFI 2.0 specification.\r
	3	\r
	4	The Block IO protocol is used to abstract block devices like hard drives,\r
	5	DVD-ROMs and floppy drives.\r
	6	\r
	7	Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
	8	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
	16	**/\r
	17	\r
	18	#ifndef __PEI_BLOCK_IO_H__\r
	19	#define __PEI_BLOCK_IO_H__\r
	20	// {BC5FA650-EDBB-4d0d-B3A3-D98907F847DF}\r
	21	#ifndef ECP_FLAG\r
	22	#define PEI_BLOCK_IO_PPI_GUID \\r
	23	{ \\r
	24	0xbc5fa650, 0xedbb, 0x4d0d, { 0xb3, 0xa3, 0xd9, 0x89, 0x7, 0xf8, 0x47, 0xdf } \\r
	25	}\r
	26	#endif\r
	27	typedef struct _PEI_BLOCK_IO_PPI PEI_BLOCK_IO_PPI;\r
	28	\r
	29	\r
	30	/**\r
	31	Reset the Block Device.\r
	32	\r
	33	@param This Indicates a pointer to the calling context.\r
	34	@param ExtendedVerification Driver may perform diagnostics on reset.\r
	35	\r
	36	@retval EFI_SUCCESS The device was reset.\r
	37	@retval EFI_DEVICE_ERROR The device is not functioning properly and could\r
	38	not be reset.\r
	39	\r
	40	**/\r
	41	typedef\r
	42	EFI_STATUS\r
	43	(EFIAPI *PEI_BLOCK_RESET)(\r
	44	IN PEI_BLOCK_IO_PPI *This,\r
	45	IN BOOLEAN ExtendedVerification\r
	46	);\r
	47	\r
	48	/**\r
	49	Read BufferSize bytes from Lba into Buffer.\r
	50	\r
	51	@param This Indicates a pointer to the calling context.\r
	52	@param MediaId Id of the media, changes every time the media is replaced.\r
	53	@param Lba The starting Logical Block Address to read from\r
	54	@param BufferSize Size of Buffer, must be a multiple of device block size.\r
	55	@param Buffer A pointer to the destination buffer for the data. The caller is\r
	56	responsible for either having implicit or explicit ownership of the buffer.\r
	57	\r
	58	@retval EFI_SUCCESS The data was read correctly from the device.\r
	59	@retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r
	60	@retval EFI_NO_MEDIA There is no media in the device.\r
	61	@retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r
	62	@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r
	63	@retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,\r
	64	or the buffer is not on proper alignment.\r
65	\r
66	**/\r
67	typedef\r
68	EFI_STATUS\r
69	(EFIAPI *PEI_BLOCK_READ)(\r
70	IN EFI_PEI_SERVICES **PeiServices,\r
71	IN PEI_BLOCK_IO_PPI *This,\r
72	IN UINT32 MediaId,\r
73	IN EFI_LBA Lba,\r
74	IN UINTN BufferSize,\r
75	OUT VOID *Buffer\r
76	);\r
77	\r
78	/**\r
79	Write BufferSize bytes from Lba into Buffer.\r
80	\r
81	@param This Indicates a pointer to the calling context.\r
82	@param MediaId The media ID that the write request is for.\r
83	@param Lba The starting logical block address to be written. The caller is\r
84	responsible for writing to only legitimate locations.\r
85	@param BufferSize Size of Buffer, must be a multiple of device block size.\r
86	@param Buffer A pointer to the source buffer for the data.\r
87	\r
88	@retval EFI_SUCCESS The data was written correctly to the device.\r
89	@retval EFI_WRITE_PROTECTED The device can not be written to.\r
90	@retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r
91	@retval EFI_NO_MEDIA There is no media in the device.\r
92	@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r
93	@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r
94	@retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,\r
95	or the buffer is not on proper alignment.\r
96	\r
97	**/\r
98	typedef\r
99	EFI_STATUS\r
100	(EFIAPI *PEI_BLOCK_WRITE)(\r
101	IN EFI_PEI_SERVICES **PeiServices,\r
102	IN PEI_BLOCK_IO_PPI *This,\r
103	IN UINT32 MediaId,\r
104	IN EFI_LBA Lba,\r
105	IN UINTN BufferSize,\r
106	IN VOID *Buffer\r
107	);\r
108	\r
109	/**\r
110	Flush the Block Device.\r
111	\r
112	@param This Indicates a pointer to the calling context.\r
113	\r
114	@retval EFI_SUCCESS All outstanding data was written to the device\r
115	@retval EFI_DEVICE_ERROR The device reported an error while writting back the data\r
116	@retval EFI_NO_MEDIA There is no media in the device.\r
117	\r
118	**/\r
119	typedef\r
120	EFI_STATUS\r
121	(EFIAPI *PEI_BLOCK_FLUSH)(\r
122	IN PEI_BLOCK_IO_PPI *This\r
123	);\r
124	\r
125	/**\r
126	Block IO read only mode data and updated only via members of BlockIO\r
127	**/\r
128	typedef struct {\r
129	///\r
130	/// The curent media Id. If the media changes, this value is changed.\r
131	///\r
132	UINT32 MediaId;\r
133	\r
134	///\r
135	/// TRUE if the media is removable; otherwise, FALSE.\r
136	///\r
137	BOOLEAN RemovableMedia;\r
138	\r
139	///\r
140	/// TRUE if there is a media currently present in the device;\r
141	/// othersise, FALSE. THis field shows the media present status\r
142	/// as of the most recent ReadBlocks() or WriteBlocks() call.\r
143	///\r
144	BOOLEAN MediaPresent;\r
145	\r
146	///\r
147	/// TRUE if LBA 0 is the first block of a partition; otherwise\r
148	/// FALSE. For media with only one partition this would be TRUE.\r
149	///\r
150	BOOLEAN LogicalPartition;\r
151	\r
152	///\r
153	/// TRUE if the media is marked read-only otherwise, FALSE.\r
154	/// This field shows the read-only status as of the most recent WriteBlocks () call.\r
155	///\r
156	BOOLEAN ReadOnly;\r
157	\r
158	///\r
159	/// TRUE if the WriteBlock () function caches write data.\r
160	///\r
161	BOOLEAN WriteCaching;\r
162	\r
163	///\r
164	/// The intrinsic block size of the device. If the media changes, then\r
165	/// this field is updated.\r
166	///\r
167	UINT32 BlockSize;\r
168	\r
169	///\r
170	/// Supplies the alignment requirement for any buffer to read or write block(s).\r
171	///\r
172	UINT32 IoAlign;\r
173	\r
174	///\r
175	/// The last logical block address on the device.\r
176	/// If the media changes, then this field is updated.\r
177	///\r
178	EFI_LBA LastBlock;\r
179	\r
180	///\r
181	/// Only present if EFI_BLOCK_IO_PROTOCOL.Revision is greater than or equal to\r
182	/// EFI_BLOCK_IO_PROTOCOL_REVISION2. Returns the first LBA is aligned to\r
183	/// a physical block boundary.\r
184	///\r
185	EFI_LBA LowestAlignedLba;\r
186	\r
187	///\r
188	/// Only present if EFI_BLOCK_IO_PROTOCOL.Revision is greater than or equal to\r
189	/// EFI_BLOCK_IO_PROTOCOL_REVISION2. Returns the number of logical blocks\r
190	/// per physical block.\r
191	///\r
192	UINT32 LogicalBlocksPerPhysicalBlock;\r
193	\r
194	///\r
195	/// Only present if EFI_BLOCK_IO_PROTOCOL.Revision is greater than or equal to\r
196	/// EFI_BLOCK_IO_PROTOCOL_REVISION3. Returns the optimal transfer length\r
197	/// granularity as a number of logical blocks.\r
198	///\r
199	UINT32 OptimalTransferLengthGranularity;\r
200	#ifdef ECP_FLAG\r
201	} PEI_BLOCK_IO_MEDIA2;\r
202	#else\r
203	} PEI_BLOCK_IO_MEDIA;\r
204	#endif\r
205	#define EFI_BLOCK_IO_PROTOCOL_REVISION 0x00010000\r
206	#define EFI_BLOCK_IO_PROTOCOL_REVISION2 0x00020001\r
207	#define EFI_BLOCK_IO_PROTOCOL_REVISION3 0x00020031\r
208	\r
209	///\r
210	/// Revision defined in EFI1.1.\r
211	///\r
212	#define EFI_BLOCK_IO_INTERFACE_REVISION EFI_BLOCK_IO_PROTOCOL_REVISION\r
213	\r
214	///\r
215	/// This protocol provides control over block devices.\r
216	///\r
217	struct _PEI_BLOCK_IO_PPI {\r
218	///\r
219	/// The revision to which the block IO interface adheres. All future\r
220	/// revisions must be backwards compatible. If a future version is not\r
221	/// back wards compatible, it is not the same GUID.\r
222	///\r
223	UINT64 Revision;\r
224	///\r
225	/// Pointer to the EFI_BLOCK_IO_MEDIA data for this device.\r
226	///\r
227	PEI_BLOCK_IO_MEDIA *Media;\r
228	PEI_BLOCK_RESET Reset;\r
229	PEI_BLOCK_READ ReadBlocks;\r
230	PEI_BLOCK_WRITE WriteBlocks;\r
231	PEI_BLOCK_FLUSH FlushBlocks;\r
232	};\r
233	\r
234	//extern EFI_GUID gEfiBlockIoProtocolGuid;\r
235	extern EFI_GUID gPeiBlockIoPpiGuid;\r
236	#endif\r