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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2726 | vana | 1 | /*++ |
| 2 | |||
| 3 | Copyright (c) 1998 Intel Corporation |
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| 4 | |||
| 5 | Module Name: |
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| 6 | |||
| 7 | event.c |
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| 8 | |||
| 9 | Abstract: |
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| 10 | |||
| 11 | |||
| 12 | |||
| 13 | |||
| 14 | Revision History |
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| 15 | |||
| 16 | --*/ |
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| 17 | |||
| 18 | #include "lib.h" |
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| 19 | |||
| 20 | |||
| 21 | EFI_EVENT |
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| 22 | LibCreateProtocolNotifyEvent ( |
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| 23 | IN EFI_GUID *ProtocolGuid, |
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| 24 | IN EFI_TPL NotifyTpl, |
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| 25 | IN EFI_EVENT_NOTIFY NotifyFunction, |
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| 26 | IN VOID *NotifyContext, |
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| 27 | OUT VOID *Registration |
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| 28 | ) |
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| 29 | { |
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| 30 | EFI_STATUS Status; |
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| 31 | EFI_EVENT Event; |
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| 32 | |||
| 33 | // |
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| 34 | // Create the event |
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| 35 | // |
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| 36 | |||
| 37 | Status = BS->CreateEvent ( |
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| 38 | EVT_NOTIFY_SIGNAL, |
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| 39 | NotifyTpl, |
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| 40 | NotifyFunction, |
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| 41 | NotifyContext, |
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| 42 | &Event |
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| 43 | ); |
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| 44 | ASSERT (!EFI_ERROR(Status)); |
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| 45 | |||
| 46 | // |
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| 47 | // Register for protocol notifactions on this event |
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| 48 | // |
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| 49 | |||
| 50 | Status = BS->RegisterProtocolNotify ( |
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| 51 | ProtocolGuid, |
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| 52 | Event, |
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| 53 | Registration |
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| 54 | ); |
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| 55 | |||
| 56 | ASSERT (!EFI_ERROR(Status)); |
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| 57 | |||
| 58 | // |
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| 59 | // Kick the event so we will perform an initial pass of |
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| 60 | // current installed drivers |
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| 61 | // |
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| 62 | |||
| 63 | BS->SignalEvent (Event); |
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| 64 | return Event; |
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| 65 | } |
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| 66 | |||
| 67 | |||
| 68 | EFI_STATUS |
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| 69 | WaitForSingleEvent ( |
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| 70 | IN EFI_EVENT Event, |
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| 71 | IN UINT64 Timeout OPTIONAL |
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| 72 | ) |
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| 73 | { |
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| 74 | EFI_STATUS Status; |
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| 75 | UINTN Index; |
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| 76 | EFI_EVENT TimerEvent; |
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| 77 | EFI_EVENT WaitList[2]; |
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| 78 | |||
| 79 | if (Timeout) { |
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| 80 | // |
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| 81 | // Create a timer event |
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| 82 | // |
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| 83 | |||
| 84 | Status = BS->CreateEvent (EVT_TIMER, 0, NULL, NULL, &TimerEvent); |
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| 85 | if (!EFI_ERROR(Status)) { |
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| 86 | |||
| 87 | // |
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| 88 | // Set the timer event |
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| 89 | // |
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| 90 | |||
| 91 | BS->SetTimer (TimerEvent, TimerRelative, Timeout); |
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| 92 | |||
| 93 | // |
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| 94 | // Wait for the original event or the timer |
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| 95 | // |
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| 96 | |||
| 97 | WaitList[0] = Event; |
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| 98 | WaitList[1] = TimerEvent; |
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| 99 | Status = BS->WaitForEvent (2, WaitList, &Index); |
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| 100 | BS->CloseEvent (TimerEvent); |
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| 101 | |||
| 102 | // |
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| 103 | // If the timer expired, change the return to timed out |
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| 104 | // |
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| 105 | |||
| 106 | if (!EFI_ERROR(Status) && Index == 1) { |
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| 107 | Status = EFI_TIMEOUT; |
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| 108 | } |
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| 109 | } |
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| 110 | |||
| 111 | } else { |
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| 112 | |||
| 113 | // |
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| 114 | // No timeout... just wait on the event |
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| 115 | // |
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| 116 | |||
| 117 | Status = BS->WaitForEvent (1, &Event, &Index); |
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| 118 | ASSERT (!EFI_ERROR(Status)); |
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| 119 | ASSERT (Index == 0); |
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| 120 | } |
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| 121 | |||
| 122 | return Status; |
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| 123 | } |
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| 124 | |||
| 125 | VOID |
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| 126 | WaitForEventWithTimeout ( |
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| 127 | IN EFI_EVENT Event, |
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| 128 | IN UINTN Timeout, |
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| 129 | IN UINTN Row, |
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| 130 | IN UINTN Column, |
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| 131 | IN CHAR16 *String, |
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| 132 | IN EFI_INPUT_KEY TimeoutKey, |
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| 133 | OUT EFI_INPUT_KEY *Key |
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| 134 | ) |
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| 135 | { |
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| 136 | EFI_STATUS Status; |
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| 137 | |||
| 138 | do { |
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| 139 | PrintAt (Column, Row, String, Timeout); |
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| 140 | Status = WaitForSingleEvent (Event, 10000000); |
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| 141 | if (Status == EFI_SUCCESS) { |
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| 142 | if (!EFI_ERROR(ST->ConIn->ReadKeyStroke (ST->ConIn, Key))) { |
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| 143 | return; |
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| 144 | } |
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| 145 | } |
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| 146 | } while (Timeout > 0); |
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| 147 | *Key = TimeoutKey; |
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| 148 | } |
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| 149 |