projects / mirror_edk2.git / blame
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|---|---|---|
| d74e9326 MX |
1 | /** @file\r |
| 2 | Header file for SEV IO library.\r | |
| 3 | \r | |
| 4 | Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>\r | |
| 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
| 6 | **/\r | |
| 7 | \r | |
| 8 | #ifndef IOLIB_SEV_H_\r | |
| 9 | #define IOLIB_SEV_H_\r | |
| 10 | \r | |
| 11 | #include <Base.h>\r | |
| 12 | \r | |
| 13 | #include <Library/BaseLib.h>\r | |
| 14 | #include <Library/DebugLib.h>\r | |
| 15 | \r | |
| 16 | /**\r | |
| 17 | Reads an 8-bit I/O port fifo into a block of memory.\r | |
| 18 | \r | |
| 19 | Reads the 8-bit I/O fifo port specified by Port.\r | |
| 20 | The port is read Count times, and the read data is\r | |
| 21 | stored in the provided Buffer.\r | |
| 22 | \r | |
| 23 | This function must guarantee that all I/O read and write operations are\r | |
| 24 | serialized.\r | |
| 25 | \r | |
| 26 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
| 27 | \r | |
| 28 | @param Port The I/O port to read.\r | |
| 29 | @param Count The number of times to read I/O port.\r | |
| 30 | @param Buffer The buffer to store the read data into.\r | |
| 31 | \r | |
| 32 | **/\r | |
| 33 | VOID\r | |
| 34 | EFIAPI\r | |
| 35 | SevIoReadFifo8 (\r | |
| 36 | IN UINTN Port,\r | |
| 37 | IN UINTN Count,\r | |
| 38 | OUT VOID *Buffer\r | |
| 39 | );\r | |
| 40 | \r | |
| 41 | /**\r | |
| 42 | Writes a block of memory into an 8-bit I/O port fifo.\r | |
| 43 | \r | |
| 44 | Writes the 8-bit I/O fifo port specified by Port.\r | |
| 45 | The port is written Count times, and the write data is\r | |
| 46 | retrieved from the provided Buffer.\r | |
| 47 | \r | |
| 48 | This function must guarantee that all I/O write and write operations are\r | |
| 49 | serialized.\r | |
| 50 | \r | |
| 51 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
| 52 | \r | |
| 53 | @param Port The I/O port to write.\r | |
| 54 | @param Count The number of times to write I/O port.\r | |
| 55 | @param Buffer The buffer to retrieve the write data from.\r | |
| 56 | \r | |
| 57 | **/\r | |
| 58 | VOID\r | |
| 59 | EFIAPI\r | |
| 60 | SevIoWriteFifo8 (\r | |
| 61 | IN UINTN Port,\r | |
| 62 | IN UINTN Count,\r | |
| 63 | IN VOID *Buffer\r | |
| 64 | );\r | |
| 65 | \r | |
| 66 | /**\r | |
| 67 | Reads an 8-bit I/O port fifo into a block of memory.\r | |
| 68 | \r | |
| 69 | Reads the 8-bit I/O fifo port specified by Port.\r | |
| 70 | The port is read Count times, and the read data is\r | |
| 71 | stored in the provided Buffer.\r | |
| 72 | \r | |
| 73 | This function must guarantee that all I/O read and write operations are\r | |
| 74 | serialized.\r | |
| 75 | \r | |
| 76 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
| 77 | \r | |
| 78 | @param Port The I/O port to read.\r | |
| 79 | @param Count The number of times to read I/O port.\r | |
| 80 | @param Buffer The buffer to store the read data into.\r | |
| 81 | \r | |
| 82 | **/\r | |
| 83 | VOID\r | |
| 84 | EFIAPI\r | |
| 85 | SevIoReadFifo16 (\r | |
| 86 | IN UINTN Port,\r | |
| 87 | IN UINTN Count,\r | |
| 88 | OUT VOID *Buffer\r | |
| 89 | );\r | |
| 90 | \r | |
| 91 | /**\r | |
| 92 | Writes a block of memory into an 8-bit I/O port fifo.\r | |
| 93 | \r | |
| 94 | Writes the 8-bit I/O fifo port specified by Port.\r | |
| 95 | The port is written Count times, and the write data is\r | |
| 96 | retrieved from the provided Buffer.\r | |
| 97 | \r | |
| 98 | This function must guarantee that all I/O write and write operations are\r | |
| 99 | serialized.\r | |
| 100 | \r | |
| 101 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
| 102 | \r | |
| 103 | @param Port The I/O port to write.\r | |
| 104 | @param Count The number of times to write I/O port.\r | |
| 105 | @param Buffer The buffer to retrieve the write data from.\r | |
| 106 | \r | |
| 107 | **/\r | |
| 108 | VOID\r | |
| 109 | EFIAPI\r | |
| 110 | SevIoWriteFifo16 (\r | |
| 111 | IN UINTN Port,\r | |
| 112 | IN UINTN Count,\r | |
| 113 | IN VOID *Buffer\r | |
| 114 | );\r | |
| 115 | \r | |
| 116 | /**\r | |
| 117 | Reads an 8-bit I/O port fifo into a block of memory.\r | |
| 118 | \r | |
| 119 | Reads the 8-bit I/O fifo port specified by Port.\r | |
| 120 | The port is read Count times, and the read data is\r | |
| 121 | stored in the provided Buffer.\r | |
| 122 | \r | |
| 123 | This function must guarantee that all I/O read and write operations are\r | |
| 124 | serialized.\r | |
| 125 | \r | |
| 126 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
| 127 | \r | |
| 128 | @param Port The I/O port to read.\r | |
| 129 | @param Count The number of times to read I/O port.\r | |
| 130 | @param Buffer The buffer to store the read data into.\r | |
| 131 | \r | |
| 132 | **/\r | |
| 133 | VOID\r | |
| 134 | EFIAPI\r | |
| 135 | SevIoReadFifo32 (\r | |
| 136 | IN UINTN Port,\r | |
| 137 | IN UINTN Count,\r | |
| 138 | OUT VOID *Buffer\r | |
| 139 | );\r | |
| 140 | \r | |
| 141 | /**\r | |
| 142 | Writes a block of memory into an 8-bit I/O port fifo.\r | |
| 143 | \r | |
| 144 | Writes the 8-bit I/O fifo port specified by Port.\r | |
| 145 | The port is written Count times, and the write data is\r | |
| 146 | retrieved from the provided Buffer.\r | |
| 147 | \r | |
| 148 | This function must guarantee that all I/O write and write operations are\r | |
| 149 | serialized.\r | |
| 150 | \r | |
| 151 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
| 152 | \r | |
| 153 | @param Port The I/O port to write.\r | |
| 154 | @param Count The number of times to write I/O port.\r | |
| 155 | @param Buffer The buffer to retrieve the write data from.\r | |
| 156 | \r | |
| 157 | **/\r | |
| 158 | VOID\r | |
| 159 | EFIAPI\r | |
| 160 | SevIoWriteFifo32 (\r | |
| 161 | IN UINTN Port,\r | |
| 162 | IN UINTN Count,\r | |
| 163 | IN VOID *Buffer\r | |
| 164 | );\r | |
| 165 | \r | |
| 166 | #endif\r |