1 /*++ @file 2 Emu Emulation Architectural Protocol Driver as defined in UEFI/PI. 3 This Timer module uses an UNIX Thread to simulate the timer-tick driven 4 timer service. 5 6 Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> 7 Portions copyright (c) 2010 - 2011, Apple Inc. All rights reserved. 8 This program and the accompanying materials 9 are licensed and made available under the terms and conditions of the BSD License 10 which accompanies this distribution. The full text of the license may be found at 11 http://opensource.org/licenses/bsd-license.php 12 13 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 14 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 15 16 17 **/ 18 19 #ifndef _TIMER_H_ 20 #define _TIMER_H_ 21 22 23 24 25 // 26 // Legal timer value range in 100 ns units 27 // 28 #define TIMER_MINIMUM_VALUE 0 29 #define TIMER_MAXIMUM_VALUE (0x100000000ULL - 1) 30 31 // 32 // Default timer value in 100 ns units (50 ms) 33 // 34 #define DEFAULT_TIMER_TICK_DURATION 500000 35 36 // 37 // Function Prototypes 38 // 39 EFI_STATUS 40 EFIAPI 41 EmuTimerDriverInitialize ( 42 IN EFI_HANDLE ImageHandle, 43 IN EFI_SYSTEM_TABLE *SystemTable 44 ); 45 46 EFI_STATUS 47 EFIAPI 48 EmuTimerDriverRegisterHandler ( 49 IN EFI_TIMER_ARCH_PROTOCOL *This, 50 IN EFI_TIMER_NOTIFY NotifyFunction 51 ); 52 53 EFI_STATUS 54 EFIAPI 55 EmuTimerDriverSetTimerPeriod ( 56 IN EFI_TIMER_ARCH_PROTOCOL *This, 57 IN UINT64 TimerPeriod 58 ); 59 60 EFI_STATUS 61 EFIAPI 62 EmuTimerDriverGetTimerPeriod ( 63 IN EFI_TIMER_ARCH_PROTOCOL *This, 64 OUT UINT64 *TimerPeriod 65 ); 66 67 EFI_STATUS 68 EFIAPI 69 EmuTimerDriverGenerateSoftInterrupt ( 70 IN EFI_TIMER_ARCH_PROTOCOL *This 71 ); 72 73 #endif 74
