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Diffstat (limited to 'general/HalExtensionSample/HalExtSampleTimers')
5 files changed, 0 insertions, 931 deletions
diff --git a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.c b/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.c deleted file mode 100644 index f45b32b6..00000000 --- a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.c +++ /dev/null @@ -1,763 +0,0 @@ -/*++ - -Copyright (c) 2011 Microsoft Corporation - -Module Name: - - HalExtSampleTimers.c - -Abstract: - - This file implements a HAL Extension Module for the fictitious EGTimer. - -Author: - - Evan Green (evgreen) 8-Jan-2011 - ---*/ - -// -// ------------------------------------------------------------------- Includes -// - -#include <nthalext.h> - -// -// -------------------------------------------------------------- Specification -// - -// -// The EGTimer is a fast-access low-latency timer designed for high-performance -// timekeeping operations. It consists of 4 timers with identical register -// definitions offset from each other. Each timer contains a 32-bit -// counter and is capable of generating one-shot or periodic interrupts using -// a "Reload Value" register. The counter counts up and generates an interrupt -// once it rolls over from its maximum value of 0xFFFFFFFF to 0 if the -// interrupt enable bit is set. The counter always runs at a frequency of -// 10MHz. The register layout of the timer appears below: -// -// Offset Register Size -// 0x00 Timer0_Control 4 -// 0x04 Timer0_ReloadValue 4 -// 0x08 Timer0_CurrentCount 4 -// 0x0C Timer0_InterruptAcknowledge 4 -// 0x10 Timer1_Control 4 -// 0x14 Timer1_ReloadValue 4 -// 0x18 Timer1_CurrentCount 4 -// 0x1C Timer1_InterruptAcknowledge 4 -// 0x20 Timer2_Control 4 -// 0x24 Timer2_ReloadValue 4 -// 0x28 Timer2_CurrentCount 4 -// 0x2C Timer2_InterruptAcknowledge 4 -// 0x30 Timer3_Control 4 -// 0x34 Timer3_ReloadValue 4 -// 0x38 Timer3_CurrentCount 4 -// 0x3C Timer3_InterruptAcknowledge 4 -// -// Register Descriptions: -// -// TimerN_Control - This is a Read/Write register containing a bitfield of -// control values that govern the timer's operation. The initial value of -// this register at reset is 0. The defined bits are listed below. 0 should -// always be written to undefined bits, and will always be read as 0. -// -// Bit Function -// 31-3 Reserved. Read as 0, always write 0 to maintain future -// compatibility. -// -// 2 Periodic. When set to 1, the timer will automatically reload -// itself with the value in the ReloadValue register. -// When set to 0, the timer's counter will be disabled by -// clearing the "Counter Enabled" bit when it overflows -// from 0xFFFFFFFF to 0. -// -// 1 Interrupt Enable. When set to 1, the timer will generate an -// interrupt when the counter overflows from 0xFFFFFFFF to 0. -// When set to 0, the timer will not generate an interrupt upon -// overflow. -// -// 0 Counter Enable. When set to 1, the counter is enabled and -// running. When set to 0, the counter is disable and will not -// run. -// -// TimerN_ReloadValue - This is a Read/Write register containing the value to -// reload the counter with when the timer is in Periodic mode and overflows -// from 0xFFFFFFFF to 0. Writing a value to this register also immediately -// writes the same value to the current count register. The initial value -// of this register at reset is 0. -// -// TimerN_CurrentCount - This is a Read/Write register containg the current -// value of the counter. This value can be overwritten at any time. It is -// also overwritten by a write to the ReloadValue register. The initial -// value of this register at reset is 0. -// -// TimerN_InterruptAcknowledge - This is a Read/Write register. On reads, it -// returns 1 if an interrupt is pending that has yet to be acknowledged. -// Writing a value of 0 clears the pending interrupt. This initial value of -// this register at reset is 0. -// - -// -// ---------------------------------------------------------------- Definitions -// - -// -// Define the total size of the register block, which is 1 page. -// - -#define EGTIMER_BLOCK_SIZE 0x1000 - -// -// Define the size of one timer's registers. -// - -#define EGTIMER_SIZE 0x10 - -// -// Define the total number of timers. -// - -#define EGTIMER_COUNT 4 - -// -// Define the timer's bit width. -// - -#define EGTIMER_BIT_WIDTH 32 - -// -// Define the counter's frequency, in Hertz. -// - -#define EGTIMER_FREQUENCY 10000000 - -// -// Define bits for the control register. -// - -#define EGTIMER_CONTROL_ENABLE 0x00000001 -#define EGTIMER_CONTROL_INTERRUPT_ENABLE 0x00000002 -#define EGTIMER_CONTROL_PERIODIC 0x00000004 - -// -// ------------------------------------------------------ Data Type Definitions -// - - -// -// Define the registers and their offsets, in ULONGs. -// - -typedef enum _EGTIMER_REGISTER { - EgTimerControl = 0, - EgTimerReloadValue = 1, - EgTimerCurrentCount = 2, - EgTimerInterruptAcknowledge = 3 -} EGTIMER_REGISTER, *PEGTIMER_REGISTER; - -// -// Define the format of the private data structure. The TimerIndex member -// allows the extension to pass the same functions for all timer an identify -// which timer is being referred to. -// - -typedef struct _EGTIMER_DATA { - ULONG TimerIndex; -} EGTIMER_DATA, *PEGTIMER_DATA; - -// -// --------------------------------------------------------------------- Macros -// - -// -// The following macros are used to read from and write to the timer. The first -// parameter is the offset from the entire timer block where this timer is -// found (which timer), and the second parameter is the register to read or -// write. For the write function, the third parameter is the value to write. -// READ_REGISTER_ULONG and WRITE_REGISTER_ULONG should always be used to -// ensure that the proper barriers and flushes are in place for doing direct -// hardware accesses. -// - -#define READ_EGTIMER(_TimerIndex, _Register) \ - READ_REGISTER_ULONG((PULONG)((PUCHAR)EgTimerBase + \ - ((_TimerIndex) * EGTIMER_SIZE)) + (_Register)) - -#define WRITE_EGTIMER(_TimerIndex, _Register, _Value) \ - WRITE_REGISTER_ULONG((PULONG)((PUCHAR)EgTimerBase + \ - ((_TimerIndex) * EGTIMER_SIZE)) + \ - (_Register), \ - _Value) - -// -// ----------------------------------------------- Internal Function Prototypes -// - -NTSTATUS -EgTimerRegister ( - __in ULONG Handle, - __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup - ); - -_Function_class_(TIMER_INITIALIZE) -NTSTATUS -EgTimerInitialize ( - __in PVOID TimerData - ); - -_Function_class_(TIMER_QUERY_COUNTER) -ULONGLONG -EgTimerQueryCounter ( - __in PVOID TimerData - ); - -_Function_class_(TIMER_ACKNOWLEDGE_INTERRUPT) -VOID -EgTimerAcknowledgeInterrupt ( - __in PVOID TimerData - ); - -_Function_class_(TIMER_ARM_TIMER) -NTSTATUS -EgTimerArm ( - __in PVOID TimerData, - __in TIMER_MODE Mode, - __in ULONGLONG TickCount - ); - -_Function_class_(TIMER_STOP) -VOID -EgTimerStop ( - __in PVOID TimerData - ); - -// -// -------------------------------------------------------------------- Globals -// - -// -// Define the physical address of the timer block. This information can either -// be hardcoded like it is here or fetched out of the CSRT resource passed to -// the extension. -// - -ULONGLONG EgTimerPhysicalAddress = 0x0BADF00D; - -// -// Define the GSIVs for each timer's interrupt. This is also a candidate for -// information to be retrieved out of the CSRT. -// - -ULONG EgTimerGsi[EGTIMER_COUNT] = { - 32, - 33, - 34, - 35 -}; - -// -// Define the mapped virtual address of the timer block. -// - -PVOID EgTimerBase = NULL; - -// -// ------------------------------------------------------------------ Functions -// - -NTSTATUS -AddResourceGroup ( - __in ULONG Handle, - __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup - ) - -/*++ - -Routine Description: - - This routine identifies and registers all of the Resource Descriptors - in the specified Resource Group. - -Arguments: - - Handle - Supplies the HAL Extension handle which must be passed to other - HAL Extension APIs. - - ResourceGroup - Supplies a pointer to the Resource Group which the - HAL Extension has been installed on. - -Return Value: - - NTSTATUS code. - ---*/ - -{ - - NTSTATUS Status; - - // - // Register the main timer block. - // - - Status = EgTimerRegister(Handle, ResourceGroup); - if (!NT_SUCCESS(Status)) { - goto AddResourceGroupEnd; - } - - Status = STATUS_SUCCESS; - -AddResourceGroupEnd: - return Status; -} - -// -// --------------------------------------------------------- Internal Functions -// - -NTSTATUS -EgTimerRegister ( - __in ULONG Handle, - __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup - ) - -/*++ - -Routine Description: - - This routine registers the EG Timer hardware. - -Arguments: - - Handle - Supplies the HAL Extension handle which must be passed to other - HAL Extension APIs. - - ResourceGroup - Supplies a pointer to the Resource Group which the - HAL Extension has been installed on. - -Return Value: - - NT status code. - ---*/ - -{ - - EGTIMER_DATA InternalData; - TIMER_INITIALIZATION_BLOCK NewTimer; - PHYSICAL_ADDRESS PhysicalAddress; - CSRT_RESOURCE_DESCRIPTOR_HEADER ResourceDescriptorHeader; - NTSTATUS Status; - ULONG TimerIndex; - - // - // DEV HACK: Makeup a resource type until we get correct CSRT parsing. - // - - ResourceDescriptorHeader.Type = CSRT_RD_TYPE_TIMER; - ResourceDescriptorHeader.Subtype = CSRT_RD_SUBTYPE_TIMER; - ResourceDescriptorHeader.Length = sizeof(CSRT_RESOURCE_DESCRIPTOR_HEADER); - - // - // Register the entire timer block's address usage with the HAL. This - // address space should be shown to the HAL as reserved even if the timer - // is not going to be registered or used so that the system knows that - // region of *physical* address space is occupied. - // - - PhysicalAddress.QuadPart = EgTimerPhysicalAddress; - Status = HalRegisterPermanentAddressUsage(PhysicalAddress, - EGTIMER_BLOCK_SIZE); - - if (!NT_SUCCESS(Status)) { - goto RegisterEnd; - } - - // - // Register each timer with the HAL. - // - - for (TimerIndex = 0; TimerIndex < EGTIMER_COUNT; TimerIndex += 1) { - - // - // Initialize the timer structure. - // - - RtlZeroMemory(&NewTimer, sizeof(TIMER_INITIALIZATION_BLOCK)); - RtlZeroMemory(&InternalData, sizeof(EGTIMER_DATA)); - INITIALIZE_TIMER_HEADER(&NewTimer); - NewTimer.CounterBitWidth = EGTIMER_BIT_WIDTH; - NewTimer.CounterFrequency = EGTIMER_FREQUENCY; - - // - // Set the pointer to the internal data and its size. The pointer can - // be the same for each timer (and a local variable) because a *copy* - // of this data will be made for each timer registered. This is the - // extensions only chance to dynamically allocate memory. - // - - NewTimer.InternalData = &InternalData; - NewTimer.InternalDataSize = sizeof(EGTIMER_DATA); - NewTimer.Interrupt.Mode = LevelSensitive; - NewTimer.Interrupt.Polarity = InterruptActiveHigh; - - // - // This must be set to indicate that this is a custom third-party timer. - // The HAL will fail the registration if this is not set correctly. - // - - NewTimer.KnownType = TimerUnknown; - - // - // The timer does not support a divisor. The GSI data can be hardcoded - // like it is here or pulled out of the resource from the CSRT table. - // - - NewTimer.MaxDivisor = 1; - NewTimer.Interrupt.Gsi = EgTimerGsi[TimerIndex]; - NewTimer.FunctionTable.Initialize = EgTimerInitialize; - NewTimer.FunctionTable.QueryCounter = EgTimerQueryCounter; - NewTimer.FunctionTable.AcknowledgeInterrupt = - EgTimerAcknowledgeInterrupt; - - NewTimer.FunctionTable.ArmTimer = EgTimerArm; - NewTimer.FunctionTable.Stop = EgTimerStop; - NewTimer.Capabilities = TIMER_COUNTER_READABLE | - TIMER_ONE_SHOT_CAPABLE | - TIMER_PERIODIC_CAPABLE | - TIMER_GENERATES_LINE_BASED_INTERRUPTS; - - InternalData.TimerIndex = TimerIndex; - ResourceDescriptorHeader.Uid = TimerIndex; - Status = RegisterResourceDescriptor(Handle, - ResourceGroup, - &ResourceDescriptorHeader, - &NewTimer); - - if (!NT_SUCCESS(Status)) { - goto RegisterEnd; - } - } - - Status = STATUS_SUCCESS; - -RegisterEnd: - return Status; -} - -_Function_class_(TIMER_INITIALIZE) -NTSTATUS -EgTimerInitialize ( - __in PVOID TimerData - ) - -/*++ - -Routine Description: - - This routine is responsible for initializing the timer hardware. This is - guaranteed to be the first timer routine called by the HAL. It must prepare - the timer for use by beginning the timer's counter ticking if the counter - is readable, setting the intial input clock divisor to 1 if applicable, - and masking all interrupts. If the timer's stop routine is called, this - routine will be called before the timer is queried or armed again. It will - not be called between every rearming of the timer. - - This routine will not be called concurrently with any other calls to - this HAL Timer extension. For per-processor timers, this routine will be - called once on each processor. A failure on any processor blocks the timer's - use on all processors. - -Arguments: - - TimerData - Supplies a pointer to the timer's private context. The contents - of this pointer were specified when the timer was initially registered, - and may be modified inside this routine. The HAL does not interpret any - data deferenced from this pointer. - -Return Value: - - Returns an NT status code indicating success or failure. If a successful - status code is returned then the HAL may subsequently call further routines - in this HAL extension to query or arm the timer. If a failure code is - returned, this HAL extension will not attempt to use this timer unless the - Initialize routine is called again and succeeds. - ---*/ - -{ - - PHYSICAL_ADDRESS PhysicalAddress; - ULONG RegisterValue; - NTSTATUS Status; - PEGTIMER_DATA Timer; - - Timer = (PEGTIMER_DATA)TimerData; - - // - // Map the timer if no one has done that yet. - // - - if (EgTimerBase == NULL) { - PhysicalAddress.QuadPart = EgTimerPhysicalAddress; - EgTimerBase = HalMapIoSpace(PhysicalAddress, - EGTIMER_BLOCK_SIZE, - MmNonCached); - - if (EgTimerBase == NULL) { - Status = STATUS_INSUFFICIENT_RESOURCES; - goto InitializeEnd; - } - } - - // - // Start the counter ticking in free running mode, and mask all interrupts. - // The counter doesn't necessarily need to be reset to 0. - // - - WRITE_EGTIMER(Timer->TimerIndex, EgTimerReloadValue, 0); - RegisterValue = EGTIMER_CONTROL_ENABLE | EGTIMER_CONTROL_PERIODIC; - WRITE_EGTIMER(Timer->TimerIndex, EgTimerControl, RegisterValue); - Status = STATUS_SUCCESS; - -InitializeEnd: - return Status; -} - -_Function_class_(TIMER_QUERY_COUNTER) -ULONGLONG -EgTimerQueryCounter ( - __in PVOID TimerData - ) - -/*++ - -Routine Description: - - This routine queries the timer hardware and retrieves the current counter - value. - - Timers are assumed to always count *up*. If the actual timer hardware counts - down, then this routine should subtract the current count from the maximum - counter value so that values appear to count up. This routine may be called - concurrently on multiple processors and must be reentrant. This routine is - extremely performance sensitive, as it may be used to back the system - performance counter. - -Arguments: - - TimerData - Supplies a pointer to the timer's private context, whose - initial content was supplied when the timer was registered. - -Return Value: - - Returns the hardware's current count. - ---*/ - -{ - - PEGTIMER_DATA Timer; - - Timer = (PEGTIMER_DATA)TimerData; - - return READ_EGTIMER(Timer->TimerIndex, EgTimerCurrentCount); -} - -_Function_class_(TIMER_ACKNOWLEDGE_INTERRUPT) -VOID -EgTimerAcknowledgeInterrupt ( - __in PVOID TimerData - ) - -/*++ - -Routine Description: - - This routine performs any actions necessary to acknowledge and quiesce a - timer interrupt. For per-processor timers, this routine may be called - concurrently on multiple processors. This routine will be called on every - timer interrupt at the hardware priority level of that interrupt, so this - routine is extremely performance sensitive. For timers running in - pseudo-periodic mode, this routine must rearm the timer for the same - interval as it was armed with without introducing delay into the interrupt - interval. Only deadline-based timers support pseudo-periodic mode. - -Arguments: - - TimerData - Supplies a pointer to the timer's private context, whose - initial content was supplied when the timer was registered. - -Return Value: - - None. - ---*/ - -{ - - PEGTIMER_DATA Timer; - - Timer = (PEGTIMER_DATA)TimerData; - - // - // Acknowledge the interrupt by writing to the interrupt acknowledge - // register. - // - - WRITE_EGTIMER(Timer->TimerIndex, EgTimerInterruptAcknowledge, 0); - return; -} - -_Function_class_(TIMER_ARM_TIMER) -NTSTATUS -EgTimerArm ( - __in PVOID TimerData, - __in TIMER_MODE Mode, - __in ULONGLONG TickCount - ) - -/*++ - -Routine Description: - - This routine arms a timer to fire an interrupt after the given number of - timer ticks. For timers that only interrupt on rollovers, this simply - enables the interrupt, the tick count parameter is ignored. If the timer - is currently armed for a different mode or tick count, this call is - expected to replace that programming. This routine will not get called - concurrently with other timer calls, except on per-processor timers, where - it may get called concurrently on different processors. - -Arguments: - - TimerData - Supplies a pointer to the timer's private context, whose - initial content was supplied when the timer was registered. - - Mode - Supplies the mode to arm the timer in, which will be one of the - modes the HAL extension advertised support for when registering the - timer. The modes are as follows: - - OneShot - Arms the timer to fire the given number of ticks from now. - Only one interrupt is expected to come in. The HAL does not make - assumptions on whether or not the expiration of this interrupt - causes the counter to stop. The Query Counter routine will not be - called while a timer is armed to fire an interrupt. - - Periodic - Arms the timer to fire periodically with an interval of the - given number of ticks. The first interrupt should happen - approximately the given number of ticks from when the arm timer - function was invoked. - - PseudoPeriodic - Arms the timer with the same functional behavior as - periodic mode, with the knowledge that the timer will have to rearm - itself during the acknowledge interrupt routine. This mode is - expected to have slightly worse performance than pure periodic mode, - but is expected to generate periodic interrupts at the exact rate - specified. - - TickCount - Supplies the number of ticks from now that the timer should - assert its interrupt in. For timers that are only capable of - interrupting on rollovers from their maximum value to 0, this parameter - is ignored. - -Return Value: - - Returns and NTSTATUS code indicating success or failure. If the timer - returns success, then the interrupt is expected to come in the specified - number of ticks from when the function was called, with a tolerance of - however long the function took to execute. If the routine fails, then no - timer routines will be called again until the timer Initialize routine is - called again and succeeds. In most cases, returning a failure code results - in a system bugcheck. - ---*/ - -{ - - ULONG ControlRegister; - PEGTIMER_DATA Timer; - - Timer = (PEGTIMER_DATA)TimerData; - - NT_ASSERT(TickCount != 0); - NT_ASSERT(TickCount <= 0xFFFFFFFF); - NT_ASSERT(Mode != TimerModePseudoPeriodic); - - // - // This will never occur. - // - - if ((TickCount > 0xFFFFFFFF) || (TickCount == 0)) { - return STATUS_INVALID_PARAMETER; - } - - ControlRegister = EGTIMER_CONTROL_ENABLE | EGTIMER_CONTROL_INTERRUPT_ENABLE; - if (Mode == TimerModePeriodic) { - ControlRegister |= EGTIMER_CONTROL_PERIODIC; - } - - // - // Disable the timer while it's being programmed to avoid spurious - // interrupts. - // - - WRITE_EGTIMER(Timer->TimerIndex, EgTimerControl, 0); - - // - // Write the reload register to set both the current count value and the - // reload value if the interrupt is periodic. - // - - WRITE_EGTIMER(Timer->TimerIndex, - EgTimerReloadValue, - 0 - (ULONG)TickCount); - - // - // Enable the timer. - // - - WRITE_EGTIMER(Timer->TimerIndex, EgTimerControl, ControlRegister); - return STATUS_SUCCESS; -} - -_Function_class_(TIMER_STOP) -VOID -EgTimerStop ( - __in PVOID TimerData - ) - -/*++ - -Routine Description: - - This routine stops a timer from ticking. After this function returns, the - timer should not generate any more interrupts, and reads to its counter - might return the same value every time. - -Arguments: - - TimerData - Supplies a pointer to the timer's private context, whose - initial content was supplied when the timer was registered. - -Return Value: - - None, this function must succeed. - ---*/ - -{ - - PEGTIMER_DATA Timer; - - Timer = (PEGTIMER_DATA)TimerData; - - // - // All that technically needs to be done to stop the timer from firing is - // to clear the interrupt enable bit. Stopping the timer entirely works too. - // - - WRITE_EGTIMER(Timer->TimerIndex, EgTimerControl, 0); - return; -} - diff --git a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.def b/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.def deleted file mode 100644 index 786620d2..00000000 --- a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.def +++ /dev/null @@ -1,2 +0,0 @@ -LIBRARY HalExtSampleTimers - diff --git a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.rc b/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.rc deleted file mode 100644 index 89069fbd..00000000 --- a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.rc +++ /dev/null @@ -1,10 +0,0 @@ -#include "verrsrc.h" -#include <ntverp.h> - -#define VER_FILETYPE VFT_DLL -#define VER_FILESUBTYPE VFT_UNKNOWN -#define VER_FILEDESCRIPTION_STR "HAL Extension Sample - Timers" -#define VER_INTERNALNAME_STR "HalExtSampleTimers.DLL" -#define VER_ORIGINALFILENAME_STR "HalExtSampleTimers.DLL" - -#include <common.ver> diff --git a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.vcxproj b/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.vcxproj deleted file mode 100644 index f03fae0d..00000000 --- a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.vcxproj +++ /dev/null @@ -1,126 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> - <ItemGroup Label="ProjectConfigurations"> - <ProjectConfiguration Include="Debug|Arm"> - <Configuration>Debug</Configuration> - <Platform>Arm</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Release|Arm"> - <Configuration>Release</Configuration> - <Platform>Arm</Platform> - </ProjectConfiguration> - </ItemGroup> - <PropertyGroup Label="Globals"> - <ProjectGuid>{708FC03F-4440-4AF4-B68F-5ADE99A0690B}</ProjectGuid> - <RootNamespace>$(MSBuildProjectName)</RootNamespace> - <KMDF_VERSION_MAJOR>1</KMDF_VERSION_MAJOR> - 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