merged libdha and libvidix, moved all files from libdha to vidix directory

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22918 b3059339-0415-0410-9bf9-f77b7e298cf2

5 files changed, 483 insertions, 0 deletions

diff --git a/vidix/dhahelperwin/MAKEFILE b/vidix/dhahelperwin/MAKEFILE
new file mode 100644
index 0000000000..58189757d6
--- /dev/null
+++ b/vidix/dhahelperwin/MAKEFILE
@@ -0,0 +1,7 @@
+#
+# 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
diff --git a/vidix/dhahelperwin/SOURCES b/vidix/dhahelperwin/SOURCES
new file mode 100644
index 0000000000..e44aa06971
--- /dev/null
+++ b/vidix/dhahelperwin/SOURCES
@@ -0,0 +1,6 @@
+TARGETNAME=dhahelper
+TARGETPATH=.
+TARGETTYPE=DRIVER
+NTDEBUG=ntsd
+
+SOURCES= dhahelper.c
diff --git a/vidix/dhahelperwin/dhahelper.c b/vidix/dhahelperwin/dhahelper.c
new file mode 100644
index 0000000000..230d44a372
--- /dev/null
+++ b/vidix/dhahelperwin/dhahelper.c
@@ -0,0 +1,359 @@
+/******************************************************************************
+ * dhahelper.c: direct hardware access under Windows NT/2000/XP
+ * Copyright (c) 2004 Sascha Sommer <saschasommer@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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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;
+}
diff --git a/vidix/dhahelperwin/dhahelper.h b/vidix/dhahelperwin/dhahelper.h
new file mode 100644
index 0000000000..a93b6ebc67
--- /dev/null
+++ b/vidix/dhahelperwin/dhahelper.h
@@ -0,0 +1,50 @@
+#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
diff --git a/vidix/dhahelperwin/dhasetup.c b/vidix/dhahelperwin/dhasetup.c
new file mode 100644
index 0000000000..7113499961
--- /dev/null
+++ b/vidix/dhahelperwin/dhasetup.c
@@ -0,0 +1,61 @@
+/* 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;
+  char path[MAX_PATH];
+  printf("dhasetup (c) 2004 Sascha Sommer\n");
+  GetWindowsDirectory(path,MAX_PATH);
+  strcpy(path+strlen(path),"\\system32\\drivers\\dhahelper.sys");
+  if(argc==1){
+    printf("Usage:\n");
+    printf("dhasetup install  -  Copies dhahelper.sys from the current directory to\n%s and configures it to start at boot.\n", path);
+    printf("dhasetup remove  -  Removes the dhahelper utility.\n");
+    return 0;
+  }
+  hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
+  if(!strcmp(argv[1],"install")){
+    printf("Installing dhahelper...\n");
+    if(!CopyFile("dhahelper.sys",path,FALSE)){
+      printf("Copying dhahelper.sys failed.\nEither dhahelper.sys is not in the current directory or you lack sufficient\nprivileges to write to %s.", path);
+      return 1;
+    }
+    // Install the driver
+    hService = CreateService(hSCManager,
+                             "DHAHELPER",
+                             "DHAHELPER",
+                             SERVICE_ALL_ACCESS,
+                             SERVICE_KERNEL_DRIVER,
+                             SERVICE_SYSTEM_START,
+                             SERVICE_ERROR_NORMAL,
+                             path,
+                             NULL,
+                             NULL,
+                             NULL,
+                             NULL,
+                             NULL);
+    if(!hService){
+      printf("Unable to register DHAHELPER Service (0x%x).\n",GetLastError());
+    }
+  }
+  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(path);
+  }
+  else {
+    printf("unknown parameter: %s\n",argv[1]);
+  }
+  CloseServiceHandle(hService);
+  CloseServiceHandle(hSCManager);
+  printf("Please reboot to let the changes take effect.\n");
+  return 0;
+}