X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=DuetPkg%2FLibrary%2FDuetTimerLib%2FX86TimerLib.c;fp=DuetPkg%2FLibrary%2FDuetTimerLib%2FX86TimerLib.c;h=0000000000000000000000000000000000000000;hp=ca3890c300db7bb3dbdf1a2834913038147276be;hb=9fb5c5c4a33248764b24cb710b56d6c32ce237b4;hpb=8efc6d84ca41e692cc60702e1f27276f7883b6db
diff --git a/DuetPkg/Library/DuetTimerLib/X86TimerLib.c b/DuetPkg/Library/DuetTimerLib/X86TimerLib.c
deleted file mode 100644
index ca3890c300..0000000000
--- a/DuetPkg/Library/DuetTimerLib/X86TimerLib.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/** @file
- Timer Library functions built upon ACPI on IA32/x64.
-
- ACPI power management timer is a 24-bit or 32-bit fixed rate free running count-up
- timer that runs off a 3.579545 MHz clock.
- When startup, Duet will check the FADT to determine whether the PM timer is a
- 32-bit or 24-bit timer.
-
- Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-
-EFI_ACPI_DESCRIPTION *gAcpiDesc = NULL;
-
-/**
- Internal function to get Acpi information from HOB.
-
- @return Pointer to ACPI description structure.
-**/
-EFI_ACPI_DESCRIPTION*
-InternalGetApciDescrptionTable (
- VOID
- )
-{
- EFI_PEI_HOB_POINTERS GuidHob;
-
- if (gAcpiDesc != NULL) {
- return gAcpiDesc;
- }
-
- GuidHob.Raw = GetFirstGuidHob (&gEfiAcpiDescriptionGuid);
- if (GuidHob.Raw != NULL) {
- gAcpiDesc = GET_GUID_HOB_DATA (GuidHob.Guid);
- DEBUG ((EFI_D_INFO, "ACPI Timer: PM_TMR_BLK.RegisterBitWidth = 0x%X\n", gAcpiDesc->PM_TMR_BLK.RegisterBitWidth));
- DEBUG ((EFI_D_INFO, "ACPI Timer: PM_TMR_BLK.Address = 0x%X\n", gAcpiDesc->PM_TMR_BLK.Address));
- return gAcpiDesc;
- } else {
- DEBUG ((EFI_D_ERROR, "Fail to get Acpi description table from hob\n"));
- return NULL;
- }
-}
-
-/**
- Internal function to read the current tick counter of ACPI.
-
- @return The tick counter read.
-
-**/
-STATIC
-UINT32
-InternalAcpiGetTimerTick (
- VOID
- )
-{
- return IoRead32 ((UINTN)gAcpiDesc->PM_TMR_BLK.Address);
-}
-
-/**
- Stalls the CPU for at least the given number of ticks.
-
- Stalls the CPU for at least the given number of ticks. It's invoked by
- MicroSecondDelay() and NanoSecondDelay().
-
- @param Delay A period of time to delay in ticks.
-
-**/
-STATIC
-VOID
-InternalAcpiDelay (
- IN UINT32 Delay
- )
-{
- UINT32 Ticks;
- UINT32 Times;
-
- Times = Delay >> (gAcpiDesc->PM_TMR_BLK.RegisterBitWidth - 2);
- Delay &= (1 << (gAcpiDesc->PM_TMR_BLK.RegisterBitWidth - 2)) - 1;
- do {
- //
- // The target timer count is calculated here
- //
- Ticks = InternalAcpiGetTimerTick () + Delay;
- Delay = 1 << (gAcpiDesc->PM_TMR_BLK.RegisterBitWidth - 2);
- //
- // Wait until time out
- // Delay >= 2^23 (if ACPI provide 24-bit timer) or Delay >= 2^31 (if ACPI
- // provide 32-bit timer) could not be handled by this function
- // Timer wrap-arounds are handled correctly by this function
- //
- while (((Ticks - InternalAcpiGetTimerTick ()) & (1 << (gAcpiDesc->PM_TMR_BLK.RegisterBitWidth - 1))) == 0) {
- CpuPause ();
- }
- } while (Times-- > 0);
-}
-
-/**
- Stalls the CPU for at least the given number of microseconds.
-
- Stalls the CPU for the number of microseconds specified by MicroSeconds.
-
- @param MicroSeconds The minimum number of microseconds to delay.
-
- @return MicroSeconds
-
-**/
-UINTN
-EFIAPI
-MicroSecondDelay (
- IN UINTN MicroSeconds
- )
-{
-
- if (InternalGetApciDescrptionTable() == NULL) {
- return MicroSeconds;
- }
-
- InternalAcpiDelay (
- (UINT32)DivU64x32 (
- MultU64x32 (
- MicroSeconds,
- 3579545
- ),
- 1000000u
- )
- );
- return MicroSeconds;
-}
-
-/**
- Stalls the CPU for at least the given number of nanoseconds.
-
- Stalls the CPU for the number of nanoseconds specified by NanoSeconds.
-
- @param NanoSeconds The minimum number of nanoseconds to delay.
-
- @return NanoSeconds
-
-**/
-UINTN
-EFIAPI
-NanoSecondDelay (
- IN UINTN NanoSeconds
- )
-{
- if (InternalGetApciDescrptionTable() == NULL) {
- return NanoSeconds;
- }
-
- InternalAcpiDelay (
- (UINT32)DivU64x32 (
- MultU64x32 (
- NanoSeconds,
- 3579545
- ),
- 1000000000u
- )
- );
- return NanoSeconds;
-}
-
-/**
- Retrieves the current value of a 64-bit free running performance counter.
-
- Retrieves the current value of a 64-bit free running performance counter. The
- counter can either count up by 1 or count down by 1. If the physical
- performance counter counts by a larger increment, then the counter values
- must be translated. The properties of the counter can be retrieved from
- GetPerformanceCounterProperties().
-
- @return The current value of the free running performance counter.
-
-**/
-UINT64
-EFIAPI
-GetPerformanceCounter (
- VOID
- )
-{
- if (InternalGetApciDescrptionTable() == NULL) {
- return 0;
- }
-
- return (UINT64)InternalAcpiGetTimerTick ();
-}
-
-/**
- Retrieves the 64-bit frequency in Hz and the range of performance counter
- values.
-
- If StartValue is not NULL, then the value that the performance counter starts
- with immediately after is it rolls over is returned in StartValue. If
- EndValue is not NULL, then the value that the performance counter end with
- immediately before it rolls over is returned in EndValue. The 64-bit
- frequency of the performance counter in Hz is always returned. If StartValue
- is less than EndValue, then the performance counter counts up. If StartValue
- is greater than EndValue, then the performance counter counts down. For
- example, a 64-bit free running counter that counts up would have a StartValue
- of 0 and an EndValue of 0xFFFFFFFFFFFFFFFF. A 24-bit free running counter
- that counts down would have a StartValue of 0xFFFFFF and an EndValue of 0.
-
- @param StartValue The value the performance counter starts with when it
- rolls over.
- @param EndValue The value that the performance counter ends with before
- it rolls over.
-
- @return The frequency in Hz.
-
-**/
-UINT64
-EFIAPI
-GetPerformanceCounterProperties (
- OUT UINT64 *StartValue, OPTIONAL
- OUT UINT64 *EndValue OPTIONAL
- )
-{
- if (InternalGetApciDescrptionTable() == NULL) {
- return 0;
- }
-
- if (StartValue != NULL) {
- *StartValue = 0;
- }
-
- if (EndValue != NULL) {
- *EndValue = (1 << gAcpiDesc->PM_TMR_BLK.RegisterBitWidth) - 1;
- }
-
- return 3579545;
-}
-
-/**
- Converts elapsed ticks of performance counter to time in nanoseconds.
-
- This function converts the elapsed ticks of running performance counter to
- time value in unit of nanoseconds.
-
- @param Ticks The number of elapsed ticks of running performance counter.
-
- @return The elapsed time in nanoseconds.
-
-**/
-UINT64
-EFIAPI
-GetTimeInNanoSecond (
- IN UINT64 Ticks
- )
-{
- UINT64 NanoSeconds;
- UINT32 Remainder;
-
- //
- // Ticks
- // Time = --------- x 1,000,000,000
- // Frequency
- //
- NanoSeconds = MultU64x32 (DivU64x32Remainder (Ticks, 3579545, &Remainder), 1000000000u);
-
- //
- // Frequency < 0x100000000, so Remainder < 0x100000000, then (Remainder * 1,000,000,000)
- // will not overflow 64-bit.
- //
- NanoSeconds += DivU64x32 (MultU64x32 ((UINT64) Remainder, 1000000000u), 3579545);
-
- return NanoSeconds;
-}