| c69dd9df |
1 | title CpuIoAccess.asm\r |
| 2 | ;------------------------------------------------------------------------------\r |
| 3 | ;*\r |
| 4 | ;* Copyright (c) 2005, Intel Corporation \r |
| 5 | ;* All rights reserved. This program and the accompanying materials \r |
| 6 | ;* are licensed and made available under the terms and conditions of the BSD License \r |
| 7 | ;* which accompanies this distribution. The full text of the license may be found at \r |
| 8 | ;* http://opensource.org/licenses/bsd-license.php \r |
| 9 | ;* \r |
| 10 | ;* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 11 | ;* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 12 | ;* \r |
| 13 | ;* Module Name:\r |
| 14 | ;* CpuIoAccess.asm\r |
| 15 | ;* \r |
| 16 | ;* Abstract: \r |
| 17 | ;* Supports IA32 CPU IO operation\r |
| 18 | ;* \r |
| 19 | ;------------------------------------------------------------------------------\r |
| 20 | ;\r |
| 21 | ;\r |
| 22 | ;------------------------------------------------------------------------------\r |
| 23 | \r |
| 24 | .686\r |
| 25 | .MODEL FLAT,C\r |
| 26 | .CODE\r |
| 27 | \r |
| 28 | \r |
| 29 | UINT8 TYPEDEF BYTE\r |
| 30 | UINT16 TYPEDEF WORD\r |
| 31 | UINT32 TYPEDEF DWORD\r |
| 32 | UINT64 TYPEDEF QWORD\r |
| 33 | UINTN TYPEDEF UINT32\r |
| 34 | \r |
| 35 | \r |
| 36 | \r |
| 37 | ;------------------------------------------------------------------------------\r |
| 38 | ; UINT8\r |
| 39 | ; CpuIoRead8 (\r |
| 40 | ; IN UINT16 Port\r |
| 41 | ; )\r |
| 42 | ;------------------------------------------------------------------------------\r |
| 43 | CpuIoRead8 PROC PUBLIC Port:UINT16\r |
| 44 | mov dx, Port\r |
| 45 | in al, dx\r |
| 46 | ret\r |
| 47 | CpuIoRead8 ENDP\r |
| 48 | \r |
| 49 | ;------------------------------------------------------------------------------\r |
| 50 | ; UINT16\r |
| 51 | ; CpuIoRead16 (\r |
| 52 | ; IN UINT16 Port\r |
| 53 | ; )\r |
| 54 | ;------------------------------------------------------------------------------\r |
| 55 | CpuIoRead16 PROC PUBLIC Port:UINT16\r |
| 56 | mov dx, Port\r |
| 57 | in ax, dx\r |
| 58 | ret\r |
| 59 | CpuIoRead16 ENDP\r |
| 60 | \r |
| 61 | ;------------------------------------------------------------------------------\r |
| 62 | ; UINT32\r |
| 63 | ; CpuIoRead32 (\r |
| 64 | ; IN UINT16 Port\r |
| 65 | ; )\r |
| 66 | ;------------------------------------------------------------------------------\r |
| 67 | CpuIoRead32 PROC PUBLIC Port:UINT16\r |
| 68 | mov dx, Port\r |
| 69 | in eax, dx\r |
| 70 | ret\r |
| 71 | CpuIoRead32 ENDP\r |
| 72 | \r |
| 73 | \r |
| 74 | \r |
| 75 | ;------------------------------------------------------------------------------\r |
| 76 | ; VOID\r |
| 77 | ; CpuIoWrite8 (\r |
| 78 | ; IN UINT16 Port,\r |
| 79 | ; IN UINT32 Data\r |
| 80 | ; )\r |
| 81 | ;------------------------------------------------------------------------------\r |
| 82 | CpuIoWrite8 PROC PUBLIC Port:UINT16, Data:UINT32\r |
| 83 | mov eax, Data\r |
| 84 | mov dx, Port\r |
| 85 | out dx, al\r |
| 86 | ret\r |
| 87 | CpuIoWrite8 ENDP\r |
| 88 | \r |
| 89 | \r |
| 90 | ;------------------------------------------------------------------------------\r |
| 91 | ; VOID\r |
| 92 | ; CpuIoWrite16 (\r |
| 93 | ; IN UINT16 Port,\r |
| 94 | ; IN UINT32 Data\r |
| 95 | ; )\r |
| 96 | ;------------------------------------------------------------------------------\r |
| 97 | CpuIoWrite16 PROC PUBLIC Port:UINT16, Data:UINT32\r |
| 98 | mov eax, Data\r |
| 99 | mov dx, Port\r |
| 100 | out dx, ax\r |
| 101 | ret\r |
| 102 | CpuIoWrite16 ENDP\r |
| 103 | \r |
| 104 | \r |
| 105 | ;------------------------------------------------------------------------------\r |
| 106 | ; VOID\r |
| 107 | ; CpuIoWrite32 (\r |
| 108 | ; IN UINT16 Port,\r |
| 109 | ; IN UINT32 Data\r |
| 110 | ; )\r |
| 111 | ;------------------------------------------------------------------------------\r |
| 112 | CpuIoWrite32 PROC PUBLIC Port:UINT16, Data:UINT32\r |
| 113 | mov eax, Data\r |
| 114 | mov dx, Port\r |
| 115 | out dx, eax\r |
| 116 | ret\r |
| 117 | CpuIoWrite32 ENDP\r |
| 118 | \r |
| 119 | \r |
| 120 | END |
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