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d59326d3 | 1 | /** @file\r |
2 | Emu 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, Intel Corporation. All rights reserved.<BR>\r | |
d18d8a1d | 9 | This program and the accompanying materials\r |
10 | are licensed and made available under the terms and conditions of the BSD License\r | |
11 | which accompanies this distribution. The full text of the license may be found at\r | |
12 | http://opensource.org/licenses/bsd-license.php\r | |
d59326d3 | 13 | \r |
d18d8a1d | 14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
15 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
d59326d3 | 16 | \r |
17 | **/\r | |
18 | \r | |
19 | #ifndef __EMU_BLOCK_IO_H__\r | |
20 | #define __EMU_BLOCK_IO_H__\r | |
21 | \r | |
22 | #include <Protocol/BlockIo.h>\r | |
23 | #include <Protocol/BlockIo2.h>\r | |
24 | \r | |
25 | #define EMU_BLOCK_IO_PROTOCOL_GUID \\r | |
033d0e5f | 26 | { 0x6888A4AE, 0xAFCE, 0xE84B, { 0x91, 0x02, 0xF7, 0xB9, 0xDA, 0xE6, 0xA0, 0x30 } }\r |
d59326d3 | 27 | \r |
28 | typedef struct _EMU_BLOCK_IO_PROTOCOL EMU_BLOCK_IO_PROTOCOL;\r | |
29 | \r | |
30 | \r | |
31 | \r | |
32 | /**\r | |
33 | Reset the block device hardware.\r | |
34 | \r | |
35 | @param[in] This Indicates a pointer to the calling context.\r | |
36 | @param[in] ExtendedVerification Indicates that the driver may perform a more\r | |
37 | exhausive verfication operation of the device\r | |
38 | during reset.\r | |
39 | \r | |
40 | @retval EFI_SUCCESS The device was reset.\r | |
41 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
42 | not be reset.\r | |
43 | \r | |
44 | **/\r | |
45 | typedef\r | |
46 | EFI_STATUS\r | |
47 | (EFIAPI *EMU_BLOCK_RESET) (\r | |
48 | IN EMU_BLOCK_IO_PROTOCOL *This,\r | |
49 | IN BOOLEAN ExtendedVerification\r | |
50 | );\r | |
51 | \r | |
52 | /**\r | |
53 | Read BufferSize bytes from Lba into Buffer.\r | |
d18d8a1d | 54 | \r |
d59326d3 | 55 | This function reads the requested number of blocks from the device. All the\r |
56 | blocks are read, or an error is returned.\r | |
57 | If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_or EFI_MEDIA_CHANGED is returned and\r | |
58 | non-blocking I/O is being used, the Event associated with this request will\r | |
59 | not be signaled.\r | |
60 | \r | |
61 | @param[in] This Indicates a pointer to the calling context.\r | |
d18d8a1d | 62 | @param[in] MediaId Id of the media, changes every time the media is\r |
d59326d3 | 63 | replaced.\r |
64 | @param[in] Lba The starting Logical Block Address to read from.\r | |
65 | @param[in, out] Token A pointer to the token associated with the transaction.\r | |
d18d8a1d | 66 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r |
67 | @param[out] Buffer A pointer to the destination buffer for the data. The\r | |
68 | caller is responsible for either having implicit or\r | |
d59326d3 | 69 | explicit ownership of the buffer.\r |
70 | \r | |
71 | @retval EFI_SUCCESS The read request was queued if Token->Event is\r | |
72 | not NULL.The data was read correctly from the\r | |
73 | device if the Token->Event is NULL.\r | |
74 | @retval EFI_DEVICE_ERROR The device reported an error while performing\r | |
75 | the read.\r | |
76 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
77 | @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r | |
78 | @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the\r | |
79 | intrinsic block size of the device.\r | |
d18d8a1d | 80 | @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,\r |
d59326d3 | 81 | or the buffer is not on proper alignment.\r |
82 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
83 | of resources.\r | |
84 | **/\r | |
85 | typedef\r | |
86 | EFI_STATUS\r | |
87 | (EFIAPI *EMU_BLOCK_READ) (\r | |
88 | IN EMU_BLOCK_IO_PROTOCOL *This,\r | |
89 | IN UINT32 MediaId,\r | |
90 | IN EFI_LBA LBA,\r | |
91 | IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r | |
92 | IN UINTN BufferSize,\r | |
033d0e5f | 93 | OUT VOID *Buffer\r |
d59326d3 | 94 | );\r |
95 | \r | |
96 | /**\r | |
97 | Write BufferSize bytes from Lba into Buffer.\r | |
98 | \r | |
99 | This function writes the requested number of blocks to the device. All blocks\r | |
100 | are written, or an error is returned.If EFI_DEVICE_ERROR, EFI_NO_MEDIA,\r | |
101 | EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED is returned and non-blocking I/O is\r | |
102 | being used, the Event associated with this request will not be signaled.\r | |
103 | \r | |
104 | @param[in] This Indicates a pointer to the calling context.\r | |
105 | @param[in] MediaId The media ID that the write request is for.\r | |
106 | @param[in] Lba The starting logical block address to be written. The\r | |
107 | caller is responsible for writing to only legitimate\r | |
108 | locations.\r | |
109 | @param[in, out] Token A pointer to the token associated with the transaction.\r | |
110 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r | |
111 | @param[in] Buffer A pointer to the source buffer for the data.\r | |
112 | \r | |
113 | @retval EFI_SUCCESS The write request was queued if Event is not NULL.\r | |
114 | The data was written correctly to the device if\r | |
115 | the Event is NULL.\r | |
116 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
117 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
118 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
119 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
120 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
d18d8a1d | 121 | @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,\r |
d59326d3 | 122 | or the buffer is not on proper alignment.\r |
123 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
124 | of resources.\r | |
125 | \r | |
126 | **/\r | |
127 | typedef\r | |
128 | EFI_STATUS\r | |
129 | (EFIAPI *EMU_BLOCK_WRITE) (\r | |
033d0e5f | 130 | IN EMU_BLOCK_IO_PROTOCOL *This,\r |
d59326d3 | 131 | IN UINT32 MediaId,\r |
132 | IN EFI_LBA LBA,\r | |
133 | IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r | |
134 | IN UINTN BufferSize,\r | |
135 | IN VOID *Buffer\r | |
136 | );\r | |
137 | \r | |
138 | /**\r | |
139 | Flush the Block Device.\r | |
d18d8a1d | 140 | \r |
d59326d3 | 141 | If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED\r |
142 | is returned and non-blocking I/O is being used, the Event associated with\r | |
d18d8a1d | 143 | this request will not be signaled.\r |
d59326d3 | 144 | \r |
145 | @param[in] This Indicates a pointer to the calling context.\r | |
146 | @param[in,out] Token A pointer to the token associated with the transaction\r | |
147 | \r | |
148 | @retval EFI_SUCCESS The flush request was queued if Event is not NULL.\r | |
149 | All outstanding data was written correctly to the\r | |
150 | device if the Event is NULL.\r | |
151 | @retval EFI_DEVICE_ERROR The device reported an error while writting back\r | |
152 | the data.\r | |
153 | @retval EFI_WRITE_PROTECTED The device cannot be written to.\r | |
154 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
155 | @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r | |
156 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
157 | of resources.\r | |
158 | \r | |
159 | **/\r | |
160 | typedef\r | |
161 | EFI_STATUS\r | |
162 | (EFIAPI *EMU_BLOCK_FLUSH) (\r | |
163 | IN EMU_BLOCK_IO_PROTOCOL *This,\r | |
164 | IN OUT EFI_BLOCK_IO2_TOKEN *Token\r | |
165 | );\r | |
166 | \r | |
167 | \r | |
168 | typedef\r | |
169 | EFI_STATUS\r | |
170 | (EFIAPI *EMU_BLOCK_CREATE_MAPPING) (\r | |
171 | IN EMU_BLOCK_IO_PROTOCOL *This,\r | |
172 | IN EFI_BLOCK_IO_MEDIA *Media\r | |
173 | );\r | |
174 | \r | |
175 | \r | |
176 | ///\r | |
177 | /// The Block I/O2 protocol defines an extension to the Block I/O protocol which\r | |
178 | /// enables the ability to read and write data at a block level in a non-blocking\r | |
179 | // manner.\r | |
180 | ///\r | |
181 | struct _EMU_BLOCK_IO_PROTOCOL {\r | |
182 | EMU_BLOCK_RESET Reset;\r | |
183 | EMU_BLOCK_READ ReadBlocks;\r | |
184 | EMU_BLOCK_WRITE WriteBlocks;\r | |
185 | EMU_BLOCK_FLUSH FlushBlocks;\r | |
186 | EMU_BLOCK_CREATE_MAPPING CreateMapping;\r | |
187 | };\r | |
188 | \r | |
189 | extern EFI_GUID gEmuBlockIoProtocolGuid;\r | |
190 | \r | |
191 | #endif\r | |
192 | \r |