mirror of
https://github.com/reactos/reactos.git
synced 2024-11-20 06:15:26 +00:00
413 lines
12 KiB
C
413 lines
12 KiB
C
/*
|
|
* VideoPort driver
|
|
*
|
|
* Copyright (C) 2002, 2003, 2004 ReactOS Team
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include "videoprt.h"
|
|
|
|
#include <ndk/kefuncs.h>
|
|
#include <ndk/halfuncs.h>
|
|
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
/* PRIVATE FUNCTIONS **********************************************************/
|
|
|
|
#if defined(_M_IX86) || defined(_M_AMD64)
|
|
NTSTATUS
|
|
NTAPI
|
|
IntInitializeVideoAddressSpace(VOID)
|
|
{
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
UNICODE_STRING PhysMemName = RTL_CONSTANT_STRING(L"\\Device\\PhysicalMemory");
|
|
NTSTATUS Status;
|
|
HANDLE PhysMemHandle;
|
|
PVOID BaseAddress;
|
|
LARGE_INTEGER Offset;
|
|
SIZE_T ViewSize;
|
|
#ifdef _M_IX86
|
|
CHAR IVTAndBda[1024 + 256];
|
|
#endif // _M_IX86
|
|
|
|
/* Free the 1MB pre-reserved region. In reality, ReactOS should simply support us mapping the view into the reserved area, but it doesn't. */
|
|
BaseAddress = 0;
|
|
ViewSize = 1024 * 1024;
|
|
Status = ZwFreeVirtualMemory(NtCurrentProcess(),
|
|
&BaseAddress,
|
|
&ViewSize,
|
|
MEM_RELEASE);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Couldn't unmap reserved memory (%x)\n", Status);
|
|
return 0;
|
|
}
|
|
|
|
/* Open the physical memory section */
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&PhysMemName,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
NULL,
|
|
NULL);
|
|
Status = ZwOpenSection(&PhysMemHandle,
|
|
SECTION_ALL_ACCESS,
|
|
&ObjectAttributes);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Couldn't open \\Device\\PhysicalMemory\n");
|
|
return Status;
|
|
}
|
|
|
|
/* Map the BIOS and device registers into the address space */
|
|
Offset.QuadPart = 0xa0000;
|
|
ViewSize = 0x100000 - 0xa0000;
|
|
BaseAddress = (PVOID)0xa0000;
|
|
Status = ZwMapViewOfSection(PhysMemHandle,
|
|
NtCurrentProcess(),
|
|
&BaseAddress,
|
|
0,
|
|
ViewSize,
|
|
&Offset,
|
|
&ViewSize,
|
|
ViewUnmap,
|
|
0,
|
|
PAGE_EXECUTE_READWRITE);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Couldn't map physical memory (%x)\n", Status);
|
|
ZwClose(PhysMemHandle);
|
|
return Status;
|
|
}
|
|
|
|
/* Close physical memory section handle */
|
|
ZwClose(PhysMemHandle);
|
|
|
|
if (BaseAddress != (PVOID)0xa0000)
|
|
{
|
|
DPRINT1("Couldn't map physical memory at the right address (was %x)\n",
|
|
BaseAddress);
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
/* Allocate some low memory to use for the non-BIOS
|
|
* parts of the v86 mode address space
|
|
*/
|
|
BaseAddress = (PVOID)0x1;
|
|
ViewSize = 0xa0000 - 0x1000;
|
|
Status = ZwAllocateVirtualMemory(NtCurrentProcess(),
|
|
&BaseAddress,
|
|
0,
|
|
&ViewSize,
|
|
MEM_RESERVE | MEM_COMMIT,
|
|
PAGE_EXECUTE_READWRITE);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Failed to allocate virtual memory (Status %x)\n", Status);
|
|
return Status;
|
|
}
|
|
if (BaseAddress != (PVOID)0x0)
|
|
{
|
|
DPRINT1("Failed to allocate virtual memory at right address (was %x)\n",
|
|
BaseAddress);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef _M_IX86
|
|
/* Get the real mode IVT and BDA from the kernel */
|
|
Status = NtVdmControl(VdmInitialize, IVTAndBda);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("NtVdmControl failed (status %x)\n", Status);
|
|
return Status;
|
|
}
|
|
#endif // _M_IX86
|
|
|
|
/* Return success */
|
|
return STATUS_SUCCESS;
|
|
}
|
|
#else
|
|
NTSTATUS
|
|
NTAPI
|
|
IntInitializeVideoAddressSpace(VOID)
|
|
{
|
|
UNIMPLEMENTED;
|
|
NT_ASSERT(FALSE);
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
#endif
|
|
|
|
VP_STATUS
|
|
NTAPI
|
|
IntInt10AllocateBuffer(
|
|
IN PVOID Context,
|
|
OUT PUSHORT Seg,
|
|
OUT PUSHORT Off,
|
|
IN OUT PULONG Length)
|
|
{
|
|
NTSTATUS Status;
|
|
#ifdef _M_IX86
|
|
PVOID MemoryAddress;
|
|
PKPROCESS CallingProcess = (PKPROCESS)PsGetCurrentProcess();
|
|
KAPC_STATE ApcState;
|
|
SIZE_T Size;
|
|
|
|
TRACE_(VIDEOPRT, "IntInt10AllocateBuffer\n");
|
|
|
|
IntAttachToCSRSS(&CallingProcess, &ApcState);
|
|
|
|
Size = *Length;
|
|
MemoryAddress = (PVOID)0x20000;
|
|
Status = ZwAllocateVirtualMemory(NtCurrentProcess(),
|
|
&MemoryAddress,
|
|
0,
|
|
&Size,
|
|
MEM_COMMIT,
|
|
PAGE_EXECUTE_READWRITE);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
WARN_(VIDEOPRT, "- ZwAllocateVirtualMemory failed\n");
|
|
IntDetachFromCSRSS(&CallingProcess, &ApcState);
|
|
return ERROR_NOT_ENOUGH_MEMORY;
|
|
}
|
|
|
|
if (MemoryAddress > (PVOID)(0x100000 - Size))
|
|
{
|
|
ZwFreeVirtualMemory(NtCurrentProcess(),
|
|
&MemoryAddress,
|
|
&Size,
|
|
MEM_RELEASE);
|
|
WARN_(VIDEOPRT, "- Unacceptable memory allocated\n");
|
|
IntDetachFromCSRSS(&CallingProcess, &ApcState);
|
|
return ERROR_NOT_ENOUGH_MEMORY;
|
|
}
|
|
|
|
*Length = (ULONG)Size;
|
|
*Seg = (USHORT)((ULONG_PTR)MemoryAddress >> 4);
|
|
*Off = (USHORT)((ULONG_PTR)MemoryAddress & 0xF);
|
|
|
|
INFO_(VIDEOPRT, "- Segment: %x\n", (ULONG_PTR)MemoryAddress >> 4);
|
|
INFO_(VIDEOPRT, "- Offset: %x\n", (ULONG_PTR)MemoryAddress & 0xF);
|
|
INFO_(VIDEOPRT, "- Length: %x\n", *Length);
|
|
|
|
IntDetachFromCSRSS(&CallingProcess, &ApcState);
|
|
|
|
return NO_ERROR;
|
|
#else
|
|
Status = x86BiosAllocateBuffer(Length, Seg, Off);
|
|
return NT_SUCCESS(Status) ? NO_ERROR : ERROR_NOT_ENOUGH_MEMORY;
|
|
#endif
|
|
}
|
|
|
|
VP_STATUS
|
|
NTAPI
|
|
IntInt10FreeBuffer(
|
|
IN PVOID Context,
|
|
IN USHORT Seg,
|
|
IN USHORT Off)
|
|
{
|
|
NTSTATUS Status;
|
|
#ifdef _M_IX86
|
|
PVOID MemoryAddress = (PVOID)((ULONG_PTR)(Seg << 4) | Off);
|
|
PKPROCESS CallingProcess = (PKPROCESS)PsGetCurrentProcess();
|
|
KAPC_STATE ApcState;
|
|
SIZE_T Size = 0;
|
|
|
|
TRACE_(VIDEOPRT, "IntInt10FreeBuffer\n");
|
|
INFO_(VIDEOPRT, "- Segment: %x\n", Seg);
|
|
INFO_(VIDEOPRT, "- Offset: %x\n", Off);
|
|
|
|
IntAttachToCSRSS(&CallingProcess, &ApcState);
|
|
Status = ZwFreeVirtualMemory(NtCurrentProcess(),
|
|
&MemoryAddress,
|
|
&Size,
|
|
MEM_RELEASE);
|
|
|
|
IntDetachFromCSRSS(&CallingProcess, &ApcState);
|
|
|
|
return Status;
|
|
#else
|
|
Status = x86BiosFreeBuffer(Seg, Off);
|
|
return NT_SUCCESS(Status) ? NO_ERROR : ERROR_INVALID_PARAMETER;
|
|
#endif
|
|
}
|
|
|
|
VP_STATUS
|
|
NTAPI
|
|
IntInt10ReadMemory(
|
|
IN PVOID Context,
|
|
IN USHORT Seg,
|
|
IN USHORT Off,
|
|
OUT PVOID Buffer,
|
|
IN ULONG Length)
|
|
{
|
|
#ifdef _M_IX86
|
|
PKPROCESS CallingProcess = (PKPROCESS)PsGetCurrentProcess();
|
|
KAPC_STATE ApcState;
|
|
|
|
TRACE_(VIDEOPRT, "IntInt10ReadMemory\n");
|
|
INFO_(VIDEOPRT, "- Segment: %x\n", Seg);
|
|
INFO_(VIDEOPRT, "- Offset: %x\n", Off);
|
|
INFO_(VIDEOPRT, "- Buffer: %x\n", Buffer);
|
|
INFO_(VIDEOPRT, "- Length: %x\n", Length);
|
|
|
|
IntAttachToCSRSS(&CallingProcess, &ApcState);
|
|
RtlCopyMemory(Buffer, (PVOID)((ULONG_PTR)(Seg << 4) | Off), Length);
|
|
IntDetachFromCSRSS(&CallingProcess, &ApcState);
|
|
|
|
return NO_ERROR;
|
|
#else
|
|
NTSTATUS Status;
|
|
|
|
Status = x86BiosReadMemory(Seg, Off, Buffer, Length);
|
|
return NT_SUCCESS(Status) ? NO_ERROR : ERROR_INVALID_PARAMETER;
|
|
#endif
|
|
}
|
|
|
|
VP_STATUS
|
|
NTAPI
|
|
IntInt10WriteMemory(
|
|
IN PVOID Context,
|
|
IN USHORT Seg,
|
|
IN USHORT Off,
|
|
IN PVOID Buffer,
|
|
IN ULONG Length)
|
|
{
|
|
#ifdef _M_IX86
|
|
PKPROCESS CallingProcess = (PKPROCESS)PsGetCurrentProcess();
|
|
KAPC_STATE ApcState;
|
|
|
|
TRACE_(VIDEOPRT, "IntInt10WriteMemory\n");
|
|
INFO_(VIDEOPRT, "- Segment: %x\n", Seg);
|
|
INFO_(VIDEOPRT, "- Offset: %x\n", Off);
|
|
INFO_(VIDEOPRT, "- Buffer: %x\n", Buffer);
|
|
INFO_(VIDEOPRT, "- Length: %x\n", Length);
|
|
|
|
IntAttachToCSRSS(&CallingProcess, &ApcState);
|
|
RtlCopyMemory((PVOID)((ULONG_PTR)(Seg << 4) | Off), Buffer, Length);
|
|
IntDetachFromCSRSS(&CallingProcess, &ApcState);
|
|
|
|
return NO_ERROR;
|
|
#else
|
|
NTSTATUS Status;
|
|
|
|
Status = x86BiosWriteMemory(Seg, Off, Buffer, Length);
|
|
return NT_SUCCESS(Status) ? NO_ERROR : ERROR_INVALID_PARAMETER;
|
|
#endif
|
|
}
|
|
|
|
VP_STATUS
|
|
NTAPI
|
|
IntInt10CallBios(
|
|
IN PVOID Context,
|
|
IN OUT PINT10_BIOS_ARGUMENTS BiosArguments)
|
|
{
|
|
#ifdef _M_AMD64
|
|
X86_BIOS_REGISTERS BiosContext;
|
|
#else
|
|
CONTEXT BiosContext;
|
|
#endif
|
|
NTSTATUS Status;
|
|
PKPROCESS CallingProcess = (PKPROCESS)PsGetCurrentProcess();
|
|
KAPC_STATE ApcState;
|
|
|
|
/* Attach to CSRSS */
|
|
IntAttachToCSRSS(&CallingProcess, &ApcState);
|
|
|
|
/* Clear the context */
|
|
RtlZeroMemory(&BiosContext, sizeof(BiosContext));
|
|
|
|
/* Fill out the bios arguments */
|
|
BiosContext.Eax = BiosArguments->Eax;
|
|
BiosContext.Ebx = BiosArguments->Ebx;
|
|
BiosContext.Ecx = BiosArguments->Ecx;
|
|
BiosContext.Edx = BiosArguments->Edx;
|
|
BiosContext.Esi = BiosArguments->Esi;
|
|
BiosContext.Edi = BiosArguments->Edi;
|
|
BiosContext.Ebp = BiosArguments->Ebp;
|
|
BiosContext.SegDs = BiosArguments->SegDs;
|
|
BiosContext.SegEs = BiosArguments->SegEs;
|
|
|
|
/* Do the ROM BIOS call */
|
|
(void)KeWaitForMutexObject(&VideoPortInt10Mutex,
|
|
Executive,
|
|
KernelMode,
|
|
FALSE,
|
|
NULL);
|
|
|
|
#ifdef _M_AMD64
|
|
Status = x86BiosCall(0x10, &BiosContext) ? STATUS_SUCCESS : STATUS_UNSUCCESSFUL;
|
|
#else
|
|
Status = Ke386CallBios(0x10, &BiosContext);
|
|
#endif
|
|
|
|
KeReleaseMutex(&VideoPortInt10Mutex, FALSE);
|
|
|
|
/* Return the arguments */
|
|
BiosArguments->Eax = BiosContext.Eax;
|
|
BiosArguments->Ebx = BiosContext.Ebx;
|
|
BiosArguments->Ecx = BiosContext.Ecx;
|
|
BiosArguments->Edx = BiosContext.Edx;
|
|
BiosArguments->Esi = BiosContext.Esi;
|
|
BiosArguments->Edi = BiosContext.Edi;
|
|
BiosArguments->Ebp = BiosContext.Ebp;
|
|
BiosArguments->SegDs = (USHORT)BiosContext.SegDs;
|
|
BiosArguments->SegEs = (USHORT)BiosContext.SegEs;
|
|
|
|
/* Detach and return status */
|
|
IntDetachFromCSRSS(&CallingProcess, &ApcState);
|
|
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
return NO_ERROR;
|
|
}
|
|
|
|
return ERROR_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* PUBLIC FUNCTIONS ***********************************************************/
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VP_STATUS
|
|
NTAPI
|
|
VideoPortInt10(
|
|
IN PVOID HwDeviceExtension,
|
|
IN PVIDEO_X86_BIOS_ARGUMENTS BiosArguments)
|
|
{
|
|
INT10_BIOS_ARGUMENTS Int10BiosArguments;
|
|
VP_STATUS Status;
|
|
|
|
if (!CsrssInitialized)
|
|
{
|
|
return ERROR_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* Copy arguments to other format */
|
|
RtlCopyMemory(&Int10BiosArguments, BiosArguments, sizeof(*BiosArguments));
|
|
Int10BiosArguments.SegDs = 0;
|
|
Int10BiosArguments.SegEs = 0;
|
|
|
|
/* Do the BIOS call */
|
|
Status = IntInt10CallBios(NULL, &Int10BiosArguments);
|
|
|
|
/* Copy results back */
|
|
RtlCopyMemory(BiosArguments, &Int10BiosArguments, sizeof(*BiosArguments));
|
|
|
|
return Status;
|
|
}
|