[Mplayer-cvslog] CVS: main/libdha/dhahelperwin MAKEFILE, NONE, 1.1 SOURCES, NONE, 1.1 dhahelper.c, NONE, 1.1 dhahelper.h, NONE, 1.1 dhasetup.c, NONE, 1.1
Sascha Sommer CVS
syncmail at mplayerhq.hu
Tue Mar 23 11:41:06 CET 2004
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CVS change done by Sascha Sommer CVS
Update of /cvsroot/mplayer/main/libdha/dhahelperwin
In directory mail:/var2/tmp/cvs-serv2635
Added Files:
MAKEFILE SOURCES dhahelper.c dhahelper.h dhasetup.c
Log Message:
Windows XP support
--- NEW FILE ---
#
# DO NOT EDIT THIS FILE!!! Edit .\sources. if you want to add a new source
# file to this component. This file merely indirects to the real make file
# that is shared by all the driver components of the Windows NT DDK
#
!INCLUDE $(NTMAKEENV)\makefile.def
--- NEW FILE ---
TARGETNAME=dhahelper
TARGETPATH=.
TARGETTYPE=DRIVER
NTDEBUG=ntsd
SOURCES= dhahelper.c
--- NEW FILE ---
/******************************************************************************
* dhahelper.c: direct hardware access under Windows NT/2000/XP
* Copyright (c) 2004 Sascha Sommer <saschasommer at freenet.de>.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*
*****************************************************************************/
#include <ntddk.h>
#include "dhahelper.h"
#define OutputDebugString DbgPrint
#define IOPM_SIZE 0x2000
typedef char IOPM[IOPM_SIZE];
static IOPM *pIOPM = NULL;
typedef struct {
PMDL Mdl;
PVOID SystemVirtualAddress;
PVOID UserVirtualAddress;
ULONG PhysMemSizeInBytes;
}alloc_priv;
static alloc_priv* alloclist;
static unsigned int alloccount=0;
static NTSTATUS dhahelperdispatch(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
static void dhahelperunload(IN PDRIVER_OBJECT DriverObject);
static NTSTATUS UnmapPhysicalMemory(PVOID UserVirtualAddress);
static NTSTATUS MapPhysicalMemoryToLinearSpace(PVOID pPhysAddress,ULONG PhysMemSizeInBytes,PVOID *PhysMemLin);
void Ke386SetIoAccessMap(int, IOPM *);
void Ke386QueryIoAccessMap(int, IOPM *);
void Ke386IoSetAccessProcess(PEPROCESS, int);
//entry point
NTSTATUS DriverEntry (IN PDRIVER_OBJECT DriverObject,IN PUNICODE_STRING RegistryPath){
UNICODE_STRING DeviceNameUnicodeString;
UNICODE_STRING DeviceLinkUnicodeString;
NTSTATUS ntStatus;
PDEVICE_OBJECT DeviceObject = NULL;
OutputDebugString ("dhahelper: entering DriverEntry");
RtlInitUnicodeString (&DeviceNameUnicodeString, L"\\Device\\DHAHELPER");
// Create an EXCLUSIVE device object (only 1 thread at a time
// can make requests to this device).
ntStatus = IoCreateDevice(DriverObject,0,&DeviceNameUnicodeString,FILE_DEVICE_DHAHELPER,0,TRUE,&DeviceObject);
if (NT_SUCCESS(ntStatus)){
// Create dispatch points for device control, create, close.
DriverObject->MajorFunction[IRP_MJ_CREATE] =
DriverObject->MajorFunction[IRP_MJ_CLOSE] =
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = dhahelperdispatch;
DriverObject->DriverUnload = dhahelperunload;
// Create a symbolic link, e.g. a name that a Win32 app can specify
// to open the device.
RtlInitUnicodeString (&DeviceLinkUnicodeString, L"\\DosDevices\\DHAHELPER");
ntStatus = IoCreateSymbolicLink(&DeviceLinkUnicodeString,&DeviceNameUnicodeString);
if (!NT_SUCCESS(ntStatus)){
// Symbolic link creation failed- note this & then delete the
// device object (it's useless if a Win32 app can't get at it).
OutputDebugString ("dhahelper: IoCreateSymbolicLink failed");
IoDeleteDevice (DeviceObject);
}
}
else{
OutputDebugString ("dhahelper: IoCreateDevice failed");
}
OutputDebugString ("dhahelper: leaving DriverEntry");
return ntStatus;
}
// Process the IRPs sent to this device
static NTSTATUS dhahelperdispatch(IN PDEVICE_OBJECT DeviceObject,IN PIRP Irp){
PIO_STACK_LOCATION IrpStack;
ULONG dwInputBufferLength;
ULONG dwOutputBufferLength;
ULONG dwIoControlCode;
PVOID pvIOBuffer;
NTSTATUS ntStatus;
dhahelper_t dhahelper_priv;
OutputDebugString ("dhahelper: entering dhahelperdispatch");
// Init to default settings
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
IrpStack = IoGetCurrentIrpStackLocation(Irp);
// Get the pointer to the input/output buffer and it's length
pvIOBuffer = Irp->AssociatedIrp.SystemBuffer;
dwInputBufferLength = IrpStack->Parameters.DeviceIoControl.InputBufferLength;
dwOutputBufferLength = IrpStack->Parameters.DeviceIoControl.OutputBufferLength;
switch (IrpStack->MajorFunction){
case IRP_MJ_CREATE:
OutputDebugString("dhahelper: IRP_MJ_CREATE");
break;
case IRP_MJ_CLOSE:
OutputDebugString("dhahelper: IRP_MJ_CLOSE");
break;
case IRP_MJ_DEVICE_CONTROL:
OutputDebugString("dhahelper: IRP_MJ_DEVICE_CONTROL");
dwIoControlCode = IrpStack->Parameters.DeviceIoControl.IoControlCode;
switch (dwIoControlCode){
case IOCTL_DHAHELPER_ENABLEDIRECTIO:
OutputDebugString("dhahelper: IOCTL_DHAHELPER_ENABLEDIRECTIO");
pIOPM = MmAllocateNonCachedMemory(sizeof(IOPM));
if (pIOPM){
RtlZeroMemory(pIOPM, sizeof(IOPM));
Ke386IoSetAccessProcess(PsGetCurrentProcess(), 1);
Ke386SetIoAccessMap(1, pIOPM);
}
else Irp->IoStatus.Status = STATUS_INSUFFICIENT_RESOURCES;
break;
case IOCTL_DHAHELPER_DISABLEDIRECTIO:
OutputDebugString("dhahelper: IOCTL_DHAHELPER_DISABLEDIRECTIO");
if (pIOPM){
Ke386IoSetAccessProcess(PsGetCurrentProcess(), 0);
Ke386SetIoAccessMap(1, pIOPM);
MmFreeNonCachedMemory(pIOPM, sizeof(IOPM));
pIOPM = NULL;
}
break;
case IOCTL_DHAHELPER_MAPPHYSTOLIN:
OutputDebugString("dhahelper: IOCTL_DHAHELPER_MAPPHYSTOLIN");
if (dwInputBufferLength){
memcpy (&dhahelper_priv, pvIOBuffer, dwInputBufferLength);
ntStatus = MapPhysicalMemoryToLinearSpace(dhahelper_priv.base,dhahelper_priv.size,&dhahelper_priv.ptr);
if (NT_SUCCESS(ntStatus)){
memcpy (pvIOBuffer, &dhahelper_priv, dwInputBufferLength);
Irp->IoStatus.Information = dwInputBufferLength;
}
Irp->IoStatus.Status = ntStatus;
}
else Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_DHAHELPER_UNMAPPHYSADDR:
OutputDebugString("dhahelper: IOCTL_DHAHELPER_UNMAPPHYSADDR");
if (dwInputBufferLength){
memcpy (&dhahelper_priv, pvIOBuffer, dwInputBufferLength);
ntStatus = UnmapPhysicalMemory(dhahelper_priv.ptr);
Irp->IoStatus.Status = ntStatus;
}
else
Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
break;
default:
OutputDebugString("dhahelper: unknown IRP_MJ_DEVICE_CONTROL");
Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
break;
}
break;
}
// DON'T get cute and try to use the status field of the irp in the
// return status. That IRP IS GONE as soon as you call IoCompleteRequest.
ntStatus = Irp->IoStatus.Status;
IoCompleteRequest (Irp, IO_NO_INCREMENT);
// We never have pending operation so always return the status code.
OutputDebugString("dhahelper: leaving dhahelperdispatch");
return ntStatus;
}
// Delete the associated device and return
static void dhahelperunload(IN PDRIVER_OBJECT DriverObject){
UNICODE_STRING DeviceLinkUnicodeString;
NTSTATUS ntStatus=STATUS_SUCCESS;
OutputDebugString ("dhahelper: entering dhahelperunload");
OutputDebugString ("dhahelper: unmapping remaining memory");
while(alloccount && (ntStatus==STATUS_SUCCESS))ntStatus = UnmapPhysicalMemory(alloclist[alloccount-1].UserVirtualAddress);
RtlInitUnicodeString (&DeviceLinkUnicodeString, L"\\DosDevices\\DHAHELPER");
ntStatus = IoDeleteSymbolicLink (&DeviceLinkUnicodeString);
if (NT_SUCCESS(ntStatus)){
IoDeleteDevice (DriverObject->DeviceObject);
}
else {
OutputDebugString ("dhahelper: IoDeleteSymbolicLink failed");
}
OutputDebugString ("dhahelper: leaving dhahelperunload");
}
/************************* memory mapping functions ******************************/
//unlike the functions of other io helpers these functions allow to map adapter memory on windows xp
//even if it has alread been mapped by the original driver
//the technique used is described in
//http://support.microsoft.com/default.aspx?scid=kb;en-us;q189327
//furthermore it keeps a list of mapped areas to free them when the driver gets unloaded
//I'm not sure what the limitations of ZwMapViewOfSection are but mapping 128MB videoram (that is probably already mapped by the gfxcard driver)
//won't work so it is generally a good idea to map only the memory you really need
static NTSTATUS MapPhysicalMemoryToLinearSpace(PVOID pPhysAddress,ULONG PhysMemSizeInBytes,PVOID *PhysMemLin){
alloc_priv* alloclisttmp;
PMDL Mdl=NULL;
PVOID SystemVirtualAddress=NULL;
PVOID UserVirtualAddress=NULL;
PHYSICAL_ADDRESS pStartPhysAddress;
OutputDebugString ("dhahelper: entering MapPhysicalMemoryToLinearSpace");
pStartPhysAddress.QuadPart = (ULONGLONG)pPhysAddress;
__try {
SystemVirtualAddress=MmMapIoSpace(pStartPhysAddress,PhysMemSizeInBytes, /*MmWriteCombined*/MmNonCached);
if(!SystemVirtualAddress){
OutputDebugString("dhahelper: MmMapIoSpace failed");
return STATUS_INVALID_PARAMETER;
}
OutputDebugString("dhahelper: SystemVirtualAddress 0x%x",SystemVirtualAddress);
Mdl=IoAllocateMdl(SystemVirtualAddress, PhysMemSizeInBytes, FALSE, FALSE,NULL);
if(!Mdl){
OutputDebugString("dhahelper: IoAllocateMdl failed");
return STATUS_INSUFFICIENT_RESOURCES;
}
OutputDebugString("dhahelper: Mdl 0x%x",Mdl);
MmBuildMdlForNonPagedPool(Mdl);
UserVirtualAddress = (PVOID)(((ULONG)PAGE_ALIGN(MmMapLockedPages(Mdl,UserMode))) + MmGetMdlByteOffset(Mdl));
if(!UserVirtualAddress){
OutputDebugString("dhahelper: MmMapLockedPages failed");
return STATUS_INSUFFICIENT_RESOURCES;
}
OutputDebugString("dhahelper: UserVirtualAddress 0x%x",UserVirtualAddress);
}__except(EXCEPTION_EXECUTE_HANDLER){
NTSTATUS ntStatus;
ntStatus = GetExceptionCode();
OutputDebugString("dhahelper: MapPhysicalMemoryToLinearSpace failed due to exception 0x%0x\n", ntStatus);
return ntStatus;
}
OutputDebugString("dhahelper: adding data to internal allocation list");
alloclisttmp=MmAllocateNonCachedMemory((alloccount+1)*sizeof(alloc_priv));
if(!alloclisttmp){
OutputDebugString("dhahelper: not enough memory to create temporary allocation list");
MmUnmapLockedPages(UserVirtualAddress, Mdl);
IoFreeMdl(Mdl);
return STATUS_INSUFFICIENT_RESOURCES;
}
if(alloccount){
memcpy(alloclisttmp,alloclist,alloccount * sizeof(alloc_priv));
MmFreeNonCachedMemory(alloclist,alloccount*sizeof(alloc_priv));
}
alloclist=alloclisttmp;
alloclist[alloccount].Mdl=Mdl;
alloclist[alloccount].SystemVirtualAddress=SystemVirtualAddress;
alloclist[alloccount].UserVirtualAddress=UserVirtualAddress;
alloclist[alloccount].PhysMemSizeInBytes=PhysMemSizeInBytes;
++alloccount;
*PhysMemLin=UserVirtualAddress;
OutputDebugString("dhahelper: leaving MapPhysicalMemoryToLinearSpace");
return STATUS_SUCCESS;
}
static NTSTATUS UnmapPhysicalMemory(PVOID UserVirtualAddress){
unsigned int i;
unsigned int x=0;
unsigned int alloccounttmp=alloccount;
OutputDebugString("dhahelper: entering UnmapPhysicalMemory to unmapp 0x%x",UserVirtualAddress);
if(!alloccount){
OutputDebugString("dhahelper: UnmapPhysicalMemory: nothing todo -> leaving...");
return STATUS_SUCCESS;
}
for(i=0;i<alloccount;i++){
if(alloclist[i].UserVirtualAddress!=UserVirtualAddress){
if(x!=i){
alloclist[x].Mdl=alloclist[i].Mdl;
alloclist[x].SystemVirtualAddress=alloclist[i].SystemVirtualAddress;
alloclist[x].UserVirtualAddress=alloclist[i].UserVirtualAddress;
alloclist[x].PhysMemSizeInBytes=alloclist[i].PhysMemSizeInBytes;
}
x++;
}
else if(alloclist[i].UserVirtualAddress==UserVirtualAddress){
if(x==i){
__try {
MmUnmapLockedPages(alloclist[x].UserVirtualAddress, alloclist[x].Mdl);
IoFreeMdl(alloclist[x].Mdl);
MmUnmapIoSpace(alloclist[x].SystemVirtualAddress,alloclist[x].PhysMemSizeInBytes);
}__except(EXCEPTION_EXECUTE_HANDLER){
NTSTATUS ntStatus;
ntStatus = GetExceptionCode();
OutputDebugString("dhahelper: UnmapPhysicalMemory failed due to exception 0x%0x (Mdl 0x%x)\n", ntStatus,alloclist[x].Mdl);
return ntStatus;
}
}
alloccounttmp--;
}
}
if(alloccounttmp){
alloc_priv* alloclisttmp;
alloclisttmp=MmAllocateNonCachedMemory(alloccounttmp*sizeof(alloc_priv));
if(!alloclisttmp){
OutputDebugString("dhahelper: not enough memory to create temporary allocation list");
return STATUS_INSUFFICIENT_RESOURCES;
}
memcpy(alloclisttmp,alloclist,alloccounttmp * sizeof(alloc_priv));
MmFreeNonCachedMemory(alloclist,alloccount*sizeof(alloc_priv));
alloclist=alloclisttmp;
}
alloccount=alloccounttmp;
OutputDebugString("dhahelper: leaving UnmapPhysicalMemory");
return STATUS_SUCCESS;
}
--- NEW FILE ---
#ifndef _DHAHELPER_H
#define _DHAHELPER_H 1
// Define the various device type values. Note that values used by Microsoft
// Corporation are in the range 0-32767, and 32768-65535 are reserved for use
// by customers.
#define FILE_DEVICE_DHAHELPER 0x00008011
// Macro definition for defining IOCTL and FSCTL function control codes.
// Note that function codes 0-2047 are reserved for Microsoft Corporation,
// and 2048-4095 are reserved for customers.
#define DHAHELPER_IOCTL_INDEX 0x810
#define IOCTL_DHAHELPER_MAPPHYSTOLIN CTL_CODE(FILE_DEVICE_DHAHELPER, \
DHAHELPER_IOCTL_INDEX, \
METHOD_BUFFERED, \
FILE_ANY_ACCESS)
#define IOCTL_DHAHELPER_UNMAPPHYSADDR CTL_CODE(FILE_DEVICE_DHAHELPER, \
DHAHELPER_IOCTL_INDEX + 1, \
METHOD_BUFFERED, \
FILE_ANY_ACCESS)
#define IOCTL_DHAHELPER_ENABLEDIRECTIO CTL_CODE(FILE_DEVICE_DHAHELPER, \
DHAHELPER_IOCTL_INDEX + 2, \
METHOD_BUFFERED, \
FILE_ANY_ACCESS)
#define IOCTL_DHAHELPER_DISABLEDIRECTIO CTL_CODE(FILE_DEVICE_DHAHELPER, \
DHAHELPER_IOCTL_INDEX + 3, \
METHOD_BUFFERED, \
FILE_ANY_ACCESS)
#if !defined(__MINGW32__) && !defined(__CYGWIN__)
#pragma pack(1)
typedef struct dhahelper_t {
#else
struct __attribute__((__packed__)) dhahelper_t {
#endif
unsigned int size;
void* base;
void* ptr;
};
typedef struct dhahelper_t dhahelper_t;
#endif
--- NEW FILE ---
/*dhahelper setup program (c) 2004 Sascha Sommer*/
/*compile with gcc -o dhasetup.exe dhasetup.c */
/*LICENSE: GPL */
#include <windows.h>
#include <stdio.h>
int main(int argc,char* argv[]){
SC_HANDLE hSCManager;
SC_HANDLE hService;
printf("dhasetup (c) 2004 Sascha Sommer\n");
if(argc==1){
printf("usage:\n");
printf("dhasetup install - copys dhahelper.sys from the current dir to windows/system32/drivers and configures it to start at system start\n");
printf("dhasetup remove - removes the dhahelper util\n");
return 0;
}
hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if(!strcmp(argv[1],"install")){
printf("installing dhahelper\n");
CopyFile("dhahelper.sys","c:\\windows\\System32\\drivers\\dhahelper.sys",FALSE);
// Install the driver
hService = CreateService(hSCManager,
"DHAHELPER",
"DHAHELPER",
SERVICE_ALL_ACCESS,
SERVICE_KERNEL_DRIVER,
SERVICE_SYSTEM_START,
SERVICE_ERROR_NORMAL,
"c:\\windows\\System32\\drivers\\dhahelper.sys",
NULL,
NULL,
NULL,
NULL,
NULL);
}
else if(!strcmp(argv[1],"remove")){
SERVICE_STATUS ServiceStatus;
printf("removing dhahelper\n");
hService = OpenService(hSCManager, "DHAHELPER", SERVICE_ALL_ACCESS);
ControlService(hService, SERVICE_CONTROL_STOP, &ServiceStatus);
DeleteService(hService);
DeleteFile("c:\\windows\\System32\\drivers\\dhahelper.sys");
}
else {
printf("unknown parameter: %s\n",argv[1]);
}
CloseServiceHandle(hService);
CloseServiceHandle(hSCManager);
printf("please reboot to let the changes take effect\n");
return 0;
}
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