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| Rev | Author | Line No. | Line |
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| 2726 | vana | 1 | /*++ |
| 2 | |||
| 3 | Copyright (c) 1998 Intel Corporation |
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| 4 | |||
| 5 | Module Name: |
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| 6 | |||
| 7 | hw.c |
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| 8 | |||
| 9 | Abstract: |
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| 10 | |||
| 11 | Debug library functions for Hardware IO access |
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| 12 | |||
| 13 | |||
| 14 | |||
| 15 | Revision History |
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| 16 | |||
| 17 | --*/ |
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| 18 | |||
| 19 | #include "lib.h" |
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| 20 | |||
| 21 | |||
| 22 | EFI_STATUS |
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| 23 | InitializeGlobalIoDevice ( |
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| 24 | IN EFI_DEVICE_PATH *DevicePath, |
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| 25 | IN EFI_GUID *Protocol, |
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| 26 | IN CHAR8 *ErrorStr, |
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| 27 | OUT EFI_DEVICE_IO_INTERFACE **GlobalIoFncs |
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| 28 | ) |
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| 29 | /*++ |
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| 30 | |||
| 31 | Routine Description: |
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| 32 | |||
| 33 | Check to see if DevicePath exists for a given Protocol. Return Error if it |
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| 34 | exists. Return GlobalIoFuncs set match the DevicePath |
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| 35 | |||
| 36 | Arguments: |
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| 37 | |||
| 38 | DevicePath - to operate on |
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| 39 | Protocol - to check the DevicePath against |
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| 40 | ErrorStr - ASCII string to display on error |
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| 41 | GlobalIoFncs - Returned with DeviceIoProtocol for the DevicePath |
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| 42 | |||
| 43 | Returns: |
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| 44 | |||
| 45 | Pass or Fail based on wether GlobalIoFncs where found |
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| 46 | |||
| 47 | --*/ |
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| 48 | { |
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| 49 | EFI_STATUS Status; |
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| 50 | EFI_HANDLE Handle; |
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| 51 | |||
| 52 | // |
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| 53 | // Check to see if this device path already has Protocol on it. |
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| 54 | // if so we are loading recursivly and should exit with an error |
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| 55 | // |
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| 56 | Status = BS->LocateDevicePath (Protocol, &DevicePath, &Handle); |
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| 57 | if (!EFI_ERROR(Status)) { |
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| 58 | DEBUG ((D_INIT, "Device Already Loaded for %a device\n", ErrorStr)); |
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| 59 | return EFI_LOAD_ERROR; |
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| 60 | } |
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| 61 | |||
| 62 | Status = BS->LocateDevicePath (&DeviceIoProtocol, &DevicePath, &Handle); |
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| 63 | if (!EFI_ERROR(Status)) { |
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| 64 | Status = BS->HandleProtocol (Handle, &DeviceIoProtocol, (VOID*)GlobalIoFncs); |
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| 65 | } |
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| 66 | |||
| 67 | ASSERT (!EFI_ERROR(Status)); |
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| 68 | return Status; |
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| 69 | } |
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| 70 | |||
| 71 | UINT32 |
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| 72 | ReadPort ( |
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| 73 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
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| 74 | IN EFI_IO_WIDTH Width, |
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| 75 | IN UINTN Port |
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| 76 | ) |
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| 77 | { |
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| 78 | UINT32 Data; |
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| 79 | EFI_STATUS Status; |
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| 80 | |||
| 81 | Status = GlobalIoFncs->Io.Read (GlobalIoFncs, Width, (UINT64)Port, 1, &Data); |
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| 82 | ASSERT(!EFI_ERROR(Status)); |
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| 83 | return Data; |
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| 84 | } |
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| 85 | |||
| 86 | UINT32 |
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| 87 | WritePort ( |
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| 88 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
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| 89 | IN EFI_IO_WIDTH Width, |
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| 90 | IN UINTN Port, |
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| 91 | IN UINTN Data |
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| 92 | ) |
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| 93 | { |
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| 94 | EFI_STATUS Status; |
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| 95 | |||
| 96 | Status = GlobalIoFncs->Io.Write (GlobalIoFncs, Width, (UINT64)Port, 1, &Data); |
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| 97 | ASSERT(!EFI_ERROR(Status)); |
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| 98 | return (UINT32)Data; |
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| 99 | } |
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| 100 | |||
| 101 | UINT32 |
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| 102 | ReadPciConfig ( |
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| 103 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
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| 104 | IN EFI_IO_WIDTH Width, |
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| 105 | IN UINTN Address |
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| 106 | ) |
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| 107 | { |
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| 108 | UINT32 Data; |
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| 109 | EFI_STATUS Status; |
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| 110 | |||
| 111 | Status = GlobalIoFncs->Pci.Read (GlobalIoFncs, Width, (UINT64)Address, 1, &Data); |
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| 112 | ASSERT(!EFI_ERROR(Status)); |
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| 113 | return Data; |
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| 114 | } |
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| 115 | |||
| 116 | UINT32 |
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| 117 | WritePciConfig ( |
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| 118 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
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| 119 | IN EFI_IO_WIDTH Width, |
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| 120 | IN UINTN Address, |
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| 121 | IN UINTN Data |
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| 122 | ) |
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| 123 | { |
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| 124 | EFI_STATUS Status; |
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| 125 | |||
| 126 | Status = GlobalIoFncs->Pci.Write (GlobalIoFncs, Width, (UINT64)Address, 1, &Data); |
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| 127 | ASSERT(!EFI_ERROR(Status)); |
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| 128 | return (UINT32)Data; |
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| 129 | } |
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| 130 | |||
| 131 | |||
| 132 |