able/windows-nt
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity
windows-nt/Source/XPSP1/NT/drivers/video/ms/8514a/disp/enable.c

1357 lines
44 KiB
C
Raw Normal View History

Add source files
2020-09-26 03:20:57 -05:00
/******************************Module*Header*******************************\
* Module Name: enable.c
*
* This module contains the functions that enable and disable the
* driver, the pdev, and the surface.
*
* Copyright (c) 1992-1994 Microsoft Corporation
\**************************************************************************/
#include "precomp.h"
/******************************Public*Structure****************************\
* GDIINFO ggdiDefault
*
* This contains the default GDIINFO fields that are passed back to GDI
* during DrvEnablePDEV.
*
* NOTE: This structure defaults to values for an 8bpp palette device.
* Some fields are overwritten for different colour depths.
\**************************************************************************/
GDIINFO ggdiDefault = {
GDI_DRIVER_VERSION,
DT_RASDISPLAY, // ulTechnology
0, // ulHorzSize (filled in later)
0, // ulVertSize (filled in later)
0, // ulHorzRes (filled in later)
0, // ulVertRes (filled in later)
0, // cBitsPixel (filled in later)
0, // cPlanes (filled in later)
20, // ulNumColors (palette managed)
0, // flRaster (DDI reserved field)
0, // ulLogPixelsX (filled in later)
0, // ulLogPixelsY (filled in later)
TC_RA_ABLE, // flTextCaps -- If we had wanted console windows
// to scroll by repainting the entire window,
// instead of doing a screen-to-screen blt, we
// would have set TC_SCROLLBLT (yes, the flag is
// bass-ackwards).
0, // ulDACRed (filled in later)
0, // ulDACGreen (filled in later)
0, // ulDACBlue (filled in later)
0x0024, // ulAspectX
0x0024, // ulAspectY
0x0033, // ulAspectXY (one-to-one aspect ratio)
1, // xStyleStep
1, // yStyleSte;
3, // denStyleStep -- Styles have a one-to-one aspect
// ratio, and every 'dot' is 3 pixels long
{ 0, 0 }, // ptlPhysOffset
{ 0, 0 }, // szlPhysSize
256, // ulNumPalReg
// These fields are for halftone initialization. The actual values are
// a bit magic, but seem to work well on our display.
{ // ciDevice
{ 6700, 3300, 0 }, // Red
{ 2100, 7100, 0 }, // Green
{ 1400, 800, 0 }, // Blue
{ 1750, 3950, 0 }, // Cyan
{ 4050, 2050, 0 }, // Magenta
{ 4400, 5200, 0 }, // Yellow
{ 3127, 3290, 0 }, // AlignmentWhite
20000, // RedGamma
20000, // GreenGamma
20000, // BlueGamma
0, 0, 0, 0, 0, 0 // No dye correction for raster displays
},
0, // ulDevicePelsDPI (for printers only)
PRIMARY_ORDER_CBA, // ulPrimaryOrder
HT_PATSIZE_4x4_M, // ulHTPatternSize
HT_FORMAT_8BPP, // ulHTOutputFormat
HT_FLAG_ADDITIVE_PRIMS, // flHTFlags
0, // ulVRefresh (filled in later)
0, // ulBltAlignment
0, // ulPanningHorzRes (filled in later)
0, // ulPanningVertRes (filled in later)
};
/******************************Public*Structure****************************\
* DEVINFO gdevinfoDefault
*
* This contains the default DEVINFO fields that are passed back to GDI
* during DrvEnablePDEV.
*
* NOTE: This structure defaults to values for an 8bpp palette device.
* Some fields are overwritten for different colour depths.
\**************************************************************************/
#define SYSTM_LOGFONT {16,7,0,0,700,0,0,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,\
CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,\
VARIABLE_PITCH | FF_DONTCARE,L"System"}
#define HELVE_LOGFONT {12,9,0,0,400,0,0,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,\
CLIP_STROKE_PRECIS,PROOF_QUALITY,\
VARIABLE_PITCH | FF_DONTCARE,L"MS Sans Serif"}
#define COURI_LOGFONT {12,9,0,0,400,0,0,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,\
CLIP_STROKE_PRECIS,PROOF_QUALITY,\
FIXED_PITCH | FF_DONTCARE, L"Courier"}
DEVINFO gdevinfoDefault = {
(GCAPS_OPAQUERECT |
GCAPS_DITHERONREALIZE |
GCAPS_PALMANAGED |
GCAPS_ALTERNATEFILL |
GCAPS_WINDINGFILL |
GCAPS_MONO_DITHER |
GCAPS_COLOR_DITHER),
// flGraphicsFlags
SYSTM_LOGFONT, // lfDefaultFont
HELVE_LOGFONT, // lfAnsiVarFont
COURI_LOGFONT, // lfAnsiFixFont
0, // cFonts
BMF_8BPP, // iDitherFormat
8, // cxDither
8, // cyDither
0 // hpalDefault (filled in later)
};
/******************************Public*Structure****************************\
* DFVFN gadrvfn[]
*
* Build the driver function table gadrvfn with function index/address
* pairs. This table tells GDI which DDI calls we support, and their
* location (GDI does an indirect call through this table to call us).
*
* Why haven't we implemented DrvSaveScreenBits? To save code.
*
* When the driver doesn't hook DrvSaveScreenBits, USER simulates on-
* the-fly by creating a temporary device-format-bitmap, and explicitly
* calling DrvCopyBits to save/restore the bits. Since we already hook
* DrvCreateDeviceBitmap, we'll end up using off-screen memory to store
* the bits anyway (which would have been the main reason for implementing
* DrvSaveScreenBits). So we may as well save some working set.
\**************************************************************************/
#if DBG || !SYNCHRONIZEACCESS_WORKS
// On Checked builds, or when we have to synchronize access, thunk
// everything through Dbg calls...
DRVFN gadrvfn[] = {
{ INDEX_DrvEnablePDEV, (PFN) DbgEnablePDEV },
{ INDEX_DrvCompletePDEV, (PFN) DbgCompletePDEV },
{ INDEX_DrvDisablePDEV, (PFN) DbgDisablePDEV },
{ INDEX_DrvEnableSurface, (PFN) DbgEnableSurface },
{ INDEX_DrvDisableSurface, (PFN) DbgDisableSurface },
{ INDEX_DrvAssertMode, (PFN) DbgAssertMode },
{ INDEX_DrvMovePointer, (PFN) DbgMovePointer },
{ INDEX_DrvSetPointerShape, (PFN) DbgSetPointerShape },
{ INDEX_DrvDitherColor, (PFN) DbgDitherColor },
{ INDEX_DrvSetPalette, (PFN) DbgSetPalette },
{ INDEX_DrvCopyBits, (PFN) DbgCopyBits },
{ INDEX_DrvBitBlt, (PFN) DbgBitBlt },
{ INDEX_DrvTextOut, (PFN) DbgTextOut },
{ INDEX_DrvGetModes, (PFN) DbgGetModes },
{ INDEX_DrvStrokePath, (PFN) DbgStrokePath },
{ INDEX_DrvFillPath, (PFN) DbgFillPath },
{ INDEX_DrvPaint, (PFN) DbgPaint },
{ INDEX_DrvRealizeBrush, (PFN) DbgRealizeBrush },
{ INDEX_DrvCreateDeviceBitmap, (PFN) DbgCreateDeviceBitmap },
{ INDEX_DrvDeleteDeviceBitmap, (PFN) DbgDeleteDeviceBitmap },
{ INDEX_DrvStretchBlt, (PFN) DbgStretchBlt },
};
#else
// On Free builds, directly call the appropriate functions...
DRVFN gadrvfn[] = {
{ INDEX_DrvEnablePDEV, (PFN) DrvEnablePDEV },
{ INDEX_DrvCompletePDEV, (PFN) DrvCompletePDEV },
{ INDEX_DrvDisablePDEV, (PFN) DrvDisablePDEV },
{ INDEX_DrvEnableSurface, (PFN) DrvEnableSurface },
{ INDEX_DrvDisableSurface, (PFN) DrvDisableSurface },
{ INDEX_DrvAssertMode, (PFN) DrvAssertMode },
{ INDEX_DrvMovePointer, (PFN) DrvMovePointer },
{ INDEX_DrvSetPointerShape, (PFN) DrvSetPointerShape },
{ INDEX_DrvDitherColor, (PFN) DrvDitherColor },
{ INDEX_DrvSetPalette, (PFN) DrvSetPalette },
{ INDEX_DrvCopyBits, (PFN) DrvCopyBits },
{ INDEX_DrvBitBlt, (PFN) DrvBitBlt },
{ INDEX_DrvTextOut, (PFN) DrvTextOut },
{ INDEX_DrvGetModes, (PFN) DrvGetModes },
{ INDEX_DrvStrokePath, (PFN) DrvStrokePath },
{ INDEX_DrvFillPath, (PFN) DrvFillPath },
{ INDEX_DrvPaint, (PFN) DrvPaint },
{ INDEX_DrvRealizeBrush, (PFN) DrvRealizeBrush },
{ INDEX_DrvCreateDeviceBitmap, (PFN) DrvCreateDeviceBitmap },
{ INDEX_DrvDeleteDeviceBitmap, (PFN) DrvDeleteDeviceBitmap },
{ INDEX_DrvStretchBlt, (PFN) DrvStretchBlt },
};
#endif
ULONG gcdrvfn = sizeof(gadrvfn) / sizeof(DRVFN);
/******************************Public*Routine******************************\
* BOOL DrvEnableDriver
*
* Enables the driver by retrieving the drivers function table and version.
*
\**************************************************************************/
BOOL DrvEnableDriver(
ULONG iEngineVersion,
ULONG cj,
DRVENABLEDATA* pded)
{
// Engine Version is passed down so future drivers can support previous
// engine versions. A next generation driver can support both the old
// and new engine conventions if told what version of engine it is
// working with. For the first version the driver does nothing with it.
// Fill in as much as we can.
if (cj >= sizeof(DRVENABLEDATA))
pded->pdrvfn = gadrvfn;
if (cj >= (sizeof(ULONG) * 2))
pded->c = gcdrvfn;
// DDI version this driver was targeted for is passed back to engine.
// Future graphic's engine may break calls down to old driver format.
if (cj >= sizeof(ULONG))
pded->iDriverVersion = DDI_DRIVER_VERSION_NT4;
return(TRUE);
}
/******************************Public*Routine******************************\
* VOID DrvDisableDriver
*
* Tells the driver it is being disabled. Release any resources allocated in
* DrvEnableDriver.
*
\**************************************************************************/
VOID DrvDisableDriver(VOID)
{
return;
}
/******************************Public*Routine******************************\
* DHPDEV DrvEnablePDEV
*
* Initializes a bunch of fields for GDI, based on the mode we've been asked
* to do. This is the first thing called after DrvEnableDriver, when GDI
* wants to get some information about us.
*
\**************************************************************************/
DHPDEV DrvEnablePDEV(
DEVMODEW* pdm, // Contains data pertaining to requested mode
PWSTR pwszLogAddr, // Logical address
ULONG cPat, // Count of standard patterns
HSURF* phsurfPatterns, // Buffer for standard patterns
ULONG cjCaps, // Size of buffer for device caps 'pdevcaps'
ULONG* pdevcaps, // Buffer for device caps, also known as 'gdiinfo'
ULONG cjDevInfo, // Number of bytes in device info 'pdi'
DEVINFO* pdi, // Device information
HDEV hdev, // HDEV, used for callbacks
PWSTR pwszDeviceName, // Device name
HANDLE hDriver) // Kernel driver handle
{
PDEV* ppdev;
// Future versions of NT had better supply 'devcaps' and 'devinfo'
// structures that are the same size or larger than the current
// structures:
if ((cjCaps < sizeof(GDIINFO)) || (cjDevInfo < sizeof(DEVINFO)))
{
DISPDBG((0, "DrvEnablePDEV - Buffer size too small"));
goto ReturnFailure0;
}
// Allocate a physical device structure. Note that we definitely
// rely on the zero initialization:
ppdev = (PDEV*) EngAllocMem(FL_ZERO_MEMORY, sizeof(PDEV), ALLOC_TAG);
if (ppdev == NULL)
{
DISPDBG((0, "DrvEnablePDEV - Failed EngAllocMem"));
goto ReturnFailure0;
}
ppdev->hDriver = hDriver;
// Get the current screen mode information. Set up device caps and
// devinfo:
if (!bInitializeModeFields(ppdev, (GDIINFO*) pdevcaps, pdi, pdm))
{
DISPDBG((0, "DrvEnablePDEV - Failed bInitializeModeFields"));
goto ReturnFailure1;
}
// Initialize palette information.
if (!bInitializePalette(ppdev, pdi))
{
DISPDBG((0, "DrvEnablePDEV - Failed bInitializePalette"));
goto ReturnFailure1;
}
return((DHPDEV) ppdev);
ReturnFailure1:
DrvDisablePDEV((DHPDEV) ppdev);
ReturnFailure0:
DISPDBG((0, "Failed DrvEnablePDEV"));
return(0);
}
/******************************Public*Routine******************************\
* DrvDisablePDEV
*
* Release the resources allocated in DrvEnablePDEV. If a surface has been
* enabled DrvDisableSurface will have already been called.
*
* Note: In an error, we may call this before DrvEnablePDEV is done.
*
\**************************************************************************/
VOID DrvDisablePDEV(
DHPDEV dhpdev)
{
PDEV* ppdev;
ppdev = (PDEV*) dhpdev;
vUninitializePalette(ppdev);
EngFreeMem(ppdev);
}
/******************************Public*Routine******************************\
* VOID DrvCompletePDEV
*
* Store the HPDEV, the engines handle for this PDEV, in the DHPDEV.
*
\**************************************************************************/
VOID DrvCompletePDEV(
DHPDEV dhpdev,
HDEV hdev)
{
((PDEV*) dhpdev)->hdevEng = hdev;
}
/******************************Public*Routine******************************\
* HSURF DrvEnableSurface
*
* Creates the drawing surface and initializes the hardware. This is called
* after DrvEnablePDEV, and performs the final device initialization.
*
\**************************************************************************/
HSURF DrvEnableSurface(
DHPDEV dhpdev)
{
PDEV* ppdev;
HSURF hsurf;
SIZEL sizl;
DSURF* pdsurf;
VOID* pvTmpBuffer;
ppdev = (PDEV*) dhpdev;
/////////////////////////////////////////////////////////////////////
// First, create our private surface structure.
//
// Whenever we get a call to draw directly to the screen, we'll get
// passed a pointer to a SURFOBJ whose 'dhpdev' field will point
// to our PDEV structure, and whose 'dhsurf' field will point to the
// following DSURF structure.
//
// Every device bitmap we create in DrvCreateDeviceBitmap will also
// have its own unique DSURF structure allocated (but will share the
// same PDEV). To make our code more polymorphic for handling drawing
// to either the screen or an off-screen bitmap, we have the same
// structure for both.
pdsurf = EngAllocMem(FL_ZERO_MEMORY, sizeof(DSURF), ALLOC_TAG);
if (pdsurf == NULL)
{
DISPDBG((0, "DrvEnableSurface - Failed pdsurf EngAllocMem"));
goto ReturnFailure;
}
ppdev->pdsurfScreen = pdsurf; // Remember it for clean-up
pdsurf->poh = &ppdev->heap.ohDfb;// The only thing we use this OH node
pdsurf->poh->x = 0; // for is its (x, y) location, and
pdsurf->poh->y = 0; // 'ohDfb' is otherwise unused
pdsurf->dt = DT_SCREEN; // Not to be confused with a DIB DFB
pdsurf->sizl.cx = ppdev->cxScreen;
pdsurf->sizl.cy = ppdev->cyScreen;
pdsurf->ppdev = ppdev;
/////////////////////////////////////////////////////////////////////
// Next, have GDI create the actual SURFOBJ.
//
// Our drawing surface is going to be 'device-managed', meaning that
// GDI cannot draw on the framebuffer bits directly, and as such we
// create the surface via EngCreateDeviceSurface. By doing this, we ensure
// that GDI will only ever access the bitmaps bits via the Drv calls
// that we've HOOKed.
//
// If we could map the entire framebuffer linearly into main memory
// (i.e., we didn't have to go through a 64k aperture), it would be
// beneficial to create the surface via EngCreateBitmap, giving GDI a
// pointer to the framebuffer bits. When we pass a call on to GDI
// where it can't directly read/write to the surface bits because the
// surface is device managed, it has to create a temporary bitmap and
// call our DrvCopyBits routine to get/set a copy of the affected bits.
// Fer example, the OpenGl component prefers to be able to write on the
// framebuffer bits directly.
sizl.cx = ppdev->cxScreen;
sizl.cy = ppdev->cyScreen;
hsurf = EngCreateDeviceSurface((DHSURF) pdsurf, sizl, ppdev->iBitmapFormat);
if (hsurf == 0)
{
DISPDBG((0, "DrvEnableSurface - Failed EngCreateDeviceSurface"));
goto ReturnFailure;
}
ppdev->hsurfScreen = hsurf; // Remember it for clean-up
ppdev->bEnabled = TRUE; // We'll soon be in graphics mode
/////////////////////////////////////////////////////////////////////
// Now associate the surface and the PDEV.
//
// We have to associate the surface we just created with our physical
// device so that it works.
//
if (!EngAssociateSurface(hsurf, ppdev->hdevEng, ppdev->flHooks))
{
DISPDBG((0, "DrvEnableSurface - Failed EngAssociateSurface"));
goto ReturnFailure;
}
// Create our generic temporary buffer, which may be used by any
// component. Because this may get swapped out of memory any time
// the driver is not active, we want to minimize the number of pages
// it takes up. We use 'VirtualAlloc' to get an exactly page-aligned
// allocation (which 'EngAllocMem' will not do):
pvTmpBuffer = EngAllocMem(0, TMP_BUFFER_SIZE, ALLOC_TAG);
if (pvTmpBuffer == NULL)
{
DISPDBG((0, "DrvEnableSurface - Failed EngAllocMem"));
goto ReturnFailure;
}
ppdev->pvTmpBuffer = pvTmpBuffer;
/////////////////////////////////////////////////////////////////////
// Now enable all the subcomponents.
//
// Note that the order in which these 'Enable' functions are called
// may be significant in low off-screen memory conditions, because
// the off-screen heap manager may fail some of the later
// allocations...
// NOTE: It isn't until bEnableHardware that cyMemory is correctly set.
if (!bEnableHardware(ppdev))
goto ReturnFailure;
if (!bEnableOffscreenHeap(ppdev))
goto ReturnFailure;
if (!bEnablePointer(ppdev))
goto ReturnFailure;
if (!bEnableText(ppdev))
goto ReturnFailure;
if (!bEnableBrushCache(ppdev))
goto ReturnFailure;
if (!bEnablePalette(ppdev))
goto ReturnFailure;
DISPDBG((5, "Passed DrvEnableSurface"));
return(hsurf);
ReturnFailure:
DrvDisableSurface((DHPDEV) ppdev);
DISPDBG((0, "Failed DrvEnableSurface"));
return(0);
}
/******************************Public*Routine******************************\
* VOID DrvDisableSurface
*
* Free resources allocated by DrvEnableSurface. Release the surface.
*
* Note: In an error case, we may call this before DrvEnableSurface is
* completely done.
*
\**************************************************************************/
VOID DrvDisableSurface(
DHPDEV dhpdev)
{
PDEV* ppdev;
ppdev = (PDEV*) dhpdev;
// Note: In an error case, some of the following relies on the
// fact that the PDEV is zero-initialized, so fields like
// 'hsurfScreen' will be zero unless the surface has been
// sucessfully initialized, and makes the assumption that
// EngDeleteSurface can take '0' as a parameter.
vDisablePalette(ppdev);
vDisableBrushCache(ppdev);
vDisableText(ppdev);
vDisablePointer(ppdev);
vDisableOffscreenHeap(ppdev);
vDisableHardware(ppdev);
EngFreeMem(ppdev->pvTmpBuffer);
EngDeleteSurface(ppdev->hsurfScreen);
EngFreeMem(ppdev->pdsurfScreen);
}
/******************************Public*Routine******************************\
* VOID DrvAssertMode
*
* This asks the device to reset itself to the mode of the pdev passed in.
*
\**************************************************************************/
BOOL DrvAssertMode(
DHPDEV dhpdev,
BOOL bEnable)
{
PDEV* ppdev;
ppdev = (PDEV*) dhpdev;
if (!bEnable)
{
//////////////////////////////////////////////////////////////
// Disable - Switch to full-screen mode
vAssertModePalette(ppdev, FALSE);
vAssertModeBrushCache(ppdev, FALSE);
vAssertModeText(ppdev, FALSE);
vAssertModePointer(ppdev, FALSE);
if (bAssertModeOffscreenHeap(ppdev, FALSE))
{
if (bAssertModeHardware(ppdev, FALSE))
{
ppdev->bEnabled = FALSE;
return(TRUE);
}
//////////////////////////////////////////////////////////
// We failed to switch to full-screen. So undo everything:
bAssertModeOffscreenHeap(ppdev, TRUE); // We don't need to check
} // return code with TRUE
vAssertModePointer(ppdev, TRUE);
vAssertModeText(ppdev, TRUE);
vAssertModeBrushCache(ppdev, TRUE);
vAssertModePalette(ppdev, TRUE);
}
else
{
//////////////////////////////////////////////////////////////
// Enable - Switch back to graphics mode
// We have to enable every subcomponent in the reverse order
// in which it was disabled:
if (bAssertModeHardware(ppdev, TRUE))
{
bAssertModeOffscreenHeap(ppdev, TRUE); // We don't need to check
// return code with TRUE
vAssertModePointer(ppdev, TRUE);
vAssertModeText(ppdev, TRUE);
vAssertModeBrushCache(ppdev, TRUE);
vAssertModePalette(ppdev, TRUE);
ppdev->bEnabled = TRUE;
return(TRUE);
}
}
return(FALSE);
}
/******************************Public*Routine******************************\
* ULONG DrvGetModes
*
* Returns the list of available modes for the device.
*
\**************************************************************************/
ULONG DrvGetModes(
HANDLE hDriver,
ULONG cjSize,
DEVMODEW* pdm)
{
DWORD cModes;
DWORD cbOutputSize;
PVIDEO_MODE_INFORMATION pVideoModeInformation;
PVIDEO_MODE_INFORMATION pVideoTemp;
DWORD cOutputModes = cjSize / (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
DWORD cbModeSize;
cModes = getAvailableModes(hDriver,
(PVIDEO_MODE_INFORMATION *) &pVideoModeInformation,
&cbModeSize);
if (cModes == 0)
{
DISPDBG((0, "DrvGetModes failed to get mode information"));
return(0);
}
if (pdm == NULL)
{
cbOutputSize = cModes * (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
}
else
{
//
// Now copy the information for the supported modes back into the
// output buffer
//
cbOutputSize = 0;
pVideoTemp = pVideoModeInformation;
do
{
if (pVideoTemp->Length != 0)
{
if (cOutputModes == 0)
{
break;
}
//
// Zero the entire structure to start off with.
//
memset(pdm, 0, sizeof(DEVMODEW));
//
// Set the name of the device to the name of the DLL.
//
memcpy(pdm->dmDeviceName, DLL_NAME, sizeof(DLL_NAME));
pdm->dmSpecVersion = DM_SPECVERSION;
pdm->dmDriverVersion = DM_SPECVERSION;
pdm->dmSize = sizeof(DEVMODEW);
pdm->dmDriverExtra = DRIVER_EXTRA_SIZE;
pdm->dmBitsPerPel = pVideoTemp->NumberOfPlanes *
pVideoTemp->BitsPerPlane;
pdm->dmPelsWidth = pVideoTemp->VisScreenWidth;
pdm->dmPelsHeight = pVideoTemp->VisScreenHeight;
pdm->dmDisplayFrequency = pVideoTemp->Frequency;
pdm->dmDisplayFlags = 0;
pdm->dmFields = DM_BITSPERPEL |
DM_PELSWIDTH |
DM_PELSHEIGHT |
DM_DISPLAYFREQUENCY |
DM_DISPLAYFLAGS ;
//
// Go to the next DEVMODE entry in the buffer.
//
cOutputModes--;
pdm = (LPDEVMODEW) ( ((ULONG)pdm) + sizeof(DEVMODEW) +
DRIVER_EXTRA_SIZE);
cbOutputSize += (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
}
pVideoTemp = (PVIDEO_MODE_INFORMATION)
(((PUCHAR)pVideoTemp) + cbModeSize);
} while (--cModes);
}
EngFreeMem(pVideoModeInformation);
return(cbOutputSize);
}
/******************************Public*Routine******************************\
* BOOL bAssertModeHardware
*
* Sets the appropriate hardware state for graphics mode or full-screen.
*
\**************************************************************************/
BOOL bAssertModeHardware(
PDEV* ppdev,
BOOL bEnable)
{
DWORD ReturnedDataLength;
ULONG ulReturn;
if (bEnable)
{
// Call the miniport via an IOCTL to set the graphics mode.
if (EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_SET_CURRENT_MODE,
&ppdev->ulMode, // input buffer
sizeof(DWORD),
NULL,
0,
&ReturnedDataLength))
{
DISPDBG((0, "bAssertModeHardware - Failed set IOCTL"));
return FALSE;
}
// Then set the rest of the default registers:
vResetClipping(ppdev);
IO_FIFO_WAIT(ppdev, 1);
IO_WRT_MASK(ppdev, -1);
}
else
{
// Call the kernel driver to reset the device to a known state.
// NTVDM will take things from there:
if (EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_RESET_DEVICE,
NULL,
0,
NULL,
0,
&ulReturn))
{
DISPDBG((0, "bAssertModeHardware - Failed reset IOCTL"));
return FALSE;
}
}
DISPDBG((5, "Passed bAssertModeHardware"));
return(TRUE);
}
/******************************Public*Routine******************************\
* BOOL bAtiAccelerator
*
* Returns TRUE if we're running on a Mach8 or compatible accelerator.
* This algorithm was taken from "Programmer's Guide to the Mach-8 Extended
* Registers Supplement," 1992, ATI Technologies Inc, p. 5-2.
*
* It seems like a pretty goofy test to me, but it's what they prescribe
* to 'specifically detect an ATI accelerator product.'
*
\**************************************************************************/
BOOL bAtiAccelerator(
PDEV* ppdev)
{
ULONG ulSave;
BOOL bAti;
bAti = FALSE;
ulSave = INPW(0x52ee);
OUTPW(0x52ee, 0x5555);
IO_GP_WAIT(ppdev);
if (INPW(0x52ee) == 0x5555)
{
OUTPW(0x52ee, 0x2a2a);
IO_GP_WAIT(ppdev);
if (INPW(0x52ee) == 0x2a2a)
{
bAti = TRUE;
}
}
// Restore the register's original contents:
OUTPW(0x52ee, ulSave);
return(bAti);
}
/******************************Public*Routine******************************\
* BOOL bEnableHardware
*
* Puts the hardware in the requested mode and initializes it. Also
* sets ppdev->cyMemory.
*
\**************************************************************************/
BOOL bEnableHardware(
PDEV* ppdev)
{
VIDEO_MEMORY VideoMemory;
VIDEO_MEMORY_INFORMATION VideoMemoryInfo;
DWORD ReturnedDataLength;
// Set all the register addresses (to allow easier porting of code
// from the S3):
ppdev->ioCur_y = CUR_Y;
ppdev->ioCur_x = CUR_X;
ppdev->ioDesty_axstp = DEST_Y;
ppdev->ioDestx_diastp = DEST_X;
ppdev->ioErr_term = ERR_TERM;
ppdev->ioMaj_axis_pcnt = MAJ_AXIS_PCNT;
ppdev->ioGp_stat_cmd = CMD;
ppdev->ioShort_stroke = SHORT_STROKE;
ppdev->ioBkgd_color = BKGD_COLOR;
ppdev->ioFrgd_color = FRGD_COLOR;
ppdev->ioWrt_mask = WRT_MASK;
ppdev->ioRd_mask = RD_MASK;
ppdev->ioColor_cmp = COLOR_CMP;
ppdev->ioBkgd_mix = BKGD_MIX;
ppdev->ioFrgd_mix = FRGD_MIX;
ppdev->ioMulti_function = MULTIFUNC_CNTL;
ppdev->ioPix_trans = PIX_TRANS;
// Now we can set the mode, unlock the accelerator, and reset the
// clipping:
if (!bAssertModeHardware(ppdev, TRUE))
goto ReturnFalse;
// Get the linear memory address range.
VideoMemory.RequestedVirtualAddress = NULL;
// About this IOCTL_VIDEO_MAP_VIDEO_MEMORY call.
//
// Since we're an 8514/A driver, we don't care squat about any stinking
// frame buffer mapping. The only reason we're calling this IOCTL
// is because we may be running as an 8514/A using the ATI miniport.
// And this IOCTL is the only way to get the ATI miniport to return
// the total number of scans of video memory. 'cyMemory' is needed
// so we can take advantage of as much off-screen memory as possible
// for the 2-d heap. It's also conceivable that we're running at
// 640x480x256 using the ATI miniport on a 512k card, in which case
// we can't just assume that 'cyMemory' was 1024.
//
// So all we're interested in is the 'VideoRamLength' field returned
// in 'VideoMemoryInfo'. Currently, any other side effects of
// making this call with the ATI miniport (such as the actual memory
// mapping) are inoccuous, and hopefully this will remain to be so in
// future ATI miniports.
//
// If we're running with the 8514/A miniport, this call does nothing
// but return 1 meg for the 'FrameLength' size:
if (EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_MAP_VIDEO_MEMORY,
&VideoMemory, // input buffer
sizeof(VIDEO_MEMORY),
&VideoMemoryInfo, // output buffer
sizeof(VideoMemoryInfo),
&ReturnedDataLength))
{
DISPDBG((0, "bEnableHardware - Error mapping buffer address"));
goto ReturnFalse;
}
// All we were interested in is 'VideoMemoryInfo', so unmap the buffer
// straight away:
VideoMemory.RequestedVirtualAddress = VideoMemoryInfo.FrameBufferBase;
EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_UNMAP_VIDEO_MEMORY,
&VideoMemory,
sizeof(VIDEO_MEMORY),
NULL,
0,
&ReturnedDataLength);
// Note that 8514/A registers cannot handle coordinates any larger
// than 1535:
ppdev->cyMemory = VideoMemoryInfo.VideoRamLength / ppdev->lDelta;
ppdev->cyMemory = min(ppdev->cyMemory, 1535);
DISPDBG((0, "Memory size %li x %li.", ppdev->cxMemory, ppdev->cyMemory));
// Set up the jump vectors to our low-level blt routines (which ones are
// used depends on whether we can do memory-mapped IO or not):
// Have to do IN/OUTs:
ppdev->pfnFillSolid = vIoFillSolid;
ppdev->pfnFillPat = vIoFillPatSlow;
ppdev->pfnXfer4bpp = vIoXfer4bpp;
ppdev->pfnXferNative = vIoXferNative;
ppdev->pfnCopyBlt = vIoCopyBlt;
ppdev->pfnFastLine = vIoFastLine;
ppdev->pfnFastFill = bIoFastFill;
if (!bAtiAccelerator(ppdev))
{
ppdev->pfnXfer1bpp = vIoXfer1bpp;
}
else
{
DISPDBG((0, "ATI extensions enabled."));
// Disable vIoMaskCopy() for fixing bug 143531.
// ppdev->flCaps |= CAPS_MASKBLT_CAPABLE;
ppdev->pfnMaskCopy = vIoMaskCopy;
ppdev->pfnXfer1bpp = vIoXfer1bppPacked;
}
DISPDBG((5, "Passed bEnableHardware"));
return(TRUE);
ReturnFalse:
DISPDBG((0, "Failed bEnableHardware"));
return(FALSE);
}
/******************************Public*Routine******************************\
* VOID vDisableHardware
*
* Undoes anything done in bEnableHardware.
*
* Note: In an error case, we may call this before bEnableHardware is
* completely done.
*
\**************************************************************************/
VOID vDisableHardware(
PDEV* ppdev)
{
}
/******************************Public*Routine******************************\
* BOOL bDetect8514A
*
* Detects whether or not an 8514/A compatible adapter is present.
*
* This code was stolen from the 8514/A miniport. It simply checks to see
* if the line-drawing error term register is readable/writable.
*
\**************************************************************************/
BOOL bDetect8514A()
{
USHORT SubSysCntlRegisterValue;
USHORT ErrTermRegisterValue;
USHORT ErrTerm5555;
USHORT ErrTermAAAA;
BOOL b8514A;
//
// Remember the original value of any registers we'll muck with.
//
SubSysCntlRegisterValue = INPW(SUBSYS_CNTL);
ErrTermRegisterValue = INPW(ERR_TERM);
//
// Reset the draw engine.
//
OUTPW(SUBSYS_CNTL, 0x9000);
OUTPW(SUBSYS_CNTL, 0x5000);
//
// We detect an 8514/A by writing a value to the error term register,
// and reading it back to see if it's the same value we wrote.
//
OUTPW(ERR_TERM, 0x5555);
ErrTerm5555 = INPW(ERR_TERM);
OUTPW(ERR_TERM, 0xAAAA);
ErrTermAAAA = INPW(ERR_TERM);
b8514A = ((ErrTerm5555 == 0x5555) && (ErrTermAAAA == 0xAAAA));
//
// Now that we're done mucking with the hardware state, we have to
// restore everything to the way it was.
//
OUTPW(ERR_TERM, ErrTermRegisterValue);
//
// Since the SUBSYS_CNTL register is not readable on a true 8514/A,
// don't try to restore it:
//
if (!b8514A)
{
OUTPW(SUBSYS_CNTL, SubSysCntlRegisterValue);
}
return(b8514A);
}
/******************************Public*Routine******************************\
* BOOL bInitializeModeFields
*
* Initializes a bunch of fields in the pdev, devcaps (aka gdiinfo), and
* devinfo based on the requested mode.
*
\**************************************************************************/
BOOL bInitializeModeFields(
PDEV* ppdev,
GDIINFO* pgdi,
DEVINFO* pdi,
DEVMODEW* pdm)
{
ULONG cModes;
PVIDEO_MODE_INFORMATION pVideoBuffer;
PVIDEO_MODE_INFORMATION pVideoModeSelected;
PVIDEO_MODE_INFORMATION pVideoTemp;
BOOL bSelectDefault;
VIDEO_MODE_INFORMATION VideoModeInformation;
ULONG cbModeSize;
// Verify that we have an 8514/A display. We do this because we can
// work with the ATI miniport, which supports some cards (notably the
// Mach64) that aren't 8514/A compatible.
if (!bDetect8514A())
{
DISPDBG((0, "bInitializeModeFields - 8514/A not detected"));
goto ReturnFalse;
}
// Call the miniport to get mode information
cModes = getAvailableModes(ppdev->hDriver, &pVideoBuffer, &cbModeSize);
if (cModes == 0)
goto ReturnFalse;
// Now see if the requested mode has a match in that table.
pVideoModeSelected = NULL;
pVideoTemp = pVideoBuffer;
if ((pdm->dmPelsWidth == 0) &&
(pdm->dmPelsHeight == 0) &&
(pdm->dmBitsPerPel == 0) &&
(pdm->dmDisplayFrequency == 0))
{
DISPDBG((1, "Default mode requested"));
bSelectDefault = TRUE;
}
else
{
DISPDBG((1, "Requested mode..."));
DISPDBG((1, " Screen width -- %li", pdm->dmPelsWidth));
DISPDBG((1, " Screen height -- %li", pdm->dmPelsHeight));
DISPDBG((1, " Bits per pel -- %li", pdm->dmBitsPerPel));
DISPDBG((1, " Frequency -- %li", pdm->dmDisplayFrequency));
bSelectDefault = FALSE;
}
while (cModes--)
{
if (pVideoTemp->Length != 0)
{
DISPDBG((2, " Checking against miniport mode:"));
DISPDBG((2, " Screen width -- %li", pVideoTemp->VisScreenWidth));
DISPDBG((2, " Screen height -- %li", pVideoTemp->VisScreenHeight));
DISPDBG((2, " Bits per pel -- %li", pVideoTemp->BitsPerPlane *
pVideoTemp->NumberOfPlanes));
DISPDBG((2, " Frequency -- %li", pVideoTemp->Frequency));
if (bSelectDefault ||
((pVideoTemp->VisScreenWidth == pdm->dmPelsWidth) &&
(pVideoTemp->VisScreenHeight == pdm->dmPelsHeight) &&
(pVideoTemp->BitsPerPlane *
pVideoTemp->NumberOfPlanes == pdm->dmBitsPerPel) &&
(pVideoTemp->Frequency == pdm->dmDisplayFrequency)))
{
pVideoModeSelected = pVideoTemp;
DISPDBG((1, "...Found a mode match!"));
break;
}
}
pVideoTemp = (PVIDEO_MODE_INFORMATION)
(((PUCHAR)pVideoTemp) + cbModeSize);
}
// If no mode has been found, return an error
if (pVideoModeSelected == NULL)
{
DISPDBG((1, "...Couldn't find a mode match!"));
EngFreeMem(pVideoBuffer);
goto ReturnFalse;
}
// We have chosen the one we want. Save it in a stack buffer and
// get rid of allocated memory before we forget to free it.
VideoModeInformation = *pVideoModeSelected;
EngFreeMem(pVideoBuffer);
#if DEBUG_HEAP
VideoModeInformation.VisScreenWidth = 640;
VideoModeInformation.VisScreenHeight = 480;
#endif
// Set up screen information from the mini-port:
ppdev->ulMode = VideoModeInformation.ModeIndex;
ppdev->cxScreen = VideoModeInformation.VisScreenWidth;
ppdev->cyScreen = VideoModeInformation.VisScreenHeight;
ppdev->lDelta = VideoModeInformation.ScreenStride;
ppdev->flCaps = 0; // We've have no capabilities
// Note that 8514/A registers cannot handle coordinates any larger
// than 1535:
ppdev->cxMemory = min(VideoModeInformation.ScreenStride, 1535);
// Note: We compute 'cyMemory' later at DrvEnableSurface time. For now,
// set cyMemory to an interesting value to aid in debugging:
ppdev->cyMemory = 0xdeadbeef;
DISPDBG((1, "ScreenStride: %lx", VideoModeInformation.ScreenStride));
ppdev->flHooks = (HOOK_BITBLT |
HOOK_TEXTOUT |
HOOK_FILLPATH |
HOOK_COPYBITS |
HOOK_STROKEPATH |
HOOK_PAINT |
HOOK_STRETCHBLT);
// Fill in the GDIINFO data structure with the default 8bpp values:
*pgdi = ggdiDefault;
// Now overwrite the defaults with the relevant information returned
// from the kernel driver:
pgdi->ulHorzSize = VideoModeInformation.XMillimeter;
pgdi->ulVertSize = VideoModeInformation.YMillimeter;
pgdi->ulHorzRes = VideoModeInformation.VisScreenWidth;
pgdi->ulVertRes = VideoModeInformation.VisScreenHeight;
pgdi->ulPanningHorzRes = VideoModeInformation.VisScreenWidth;
pgdi->ulPanningVertRes = VideoModeInformation.VisScreenHeight;
pgdi->cBitsPixel = VideoModeInformation.BitsPerPlane;
pgdi->cPlanes = VideoModeInformation.NumberOfPlanes;
pgdi->ulVRefresh = VideoModeInformation.Frequency;
pgdi->ulDACRed = VideoModeInformation.NumberRedBits;
pgdi->ulDACGreen = VideoModeInformation.NumberGreenBits;
pgdi->ulDACBlue = VideoModeInformation.NumberBlueBits;
pgdi->ulLogPixelsX = pdm->dmLogPixels;
pgdi->ulLogPixelsY = pdm->dmLogPixels;
// Fill in the devinfo structure with the default 8bpp values:
*pdi = gdevinfoDefault;
ppdev->cPelSize = 0;
ppdev->iBitmapFormat = BMF_8BPP;
ppdev->ulWhite = 0xff;
// Assuming palette is orthogonal - all colors are same size.
ppdev->cPaletteShift = 8 - pgdi->ulDACRed;
DISPDBG((5, "Passed bInitializeModeFields"));
return(TRUE);
ReturnFalse:
DISPDBG((0, "Failed bInitializeModeFields"));
return(FALSE);
}
/******************************Public*Routine******************************\
* DWORD getAvailableModes
*
* Calls the miniport to get the list of modes supported by the kernel driver,
* and returns the list of modes supported by the diplay driver among those
*
* returns the number of entries in the videomode buffer.
* 0 means no modes are supported by the miniport or that an error occured.
*
* NOTE: the buffer must be freed up by the caller.
*
\**************************************************************************/
DWORD getAvailableModes(
HANDLE hDriver,
PVIDEO_MODE_INFORMATION* modeInformation,
DWORD* cbModeSize)
{
ULONG ulTemp;
VIDEO_NUM_MODES modes;
PVIDEO_MODE_INFORMATION pVideoTemp;
//
// Get the number of modes supported by the mini-port
//
if (EngDeviceIoControl(hDriver,
IOCTL_VIDEO_QUERY_NUM_AVAIL_MODES,
NULL,
0,
&modes,
sizeof(VIDEO_NUM_MODES),
&ulTemp))
{
DISPDBG((0, "getAvailableModes - Failed VIDEO_QUERY_NUM_AVAIL_MODES"));
return(0);
}
*cbModeSize = modes.ModeInformationLength;
//
// Allocate the buffer for the mini-port to write the modes in.
//
*modeInformation = (PVIDEO_MODE_INFORMATION)
EngAllocMem(FL_ZERO_MEMORY,
modes.NumModes *
modes.ModeInformationLength, ALLOC_TAG);
if (*modeInformation == (PVIDEO_MODE_INFORMATION) NULL)
{
DISPDBG((0, "getAvailableModes - Failed EngAllocMem"));
return 0;
}
//
// Ask the mini-port to fill in the available modes.
//
if (EngDeviceIoControl(hDriver,
IOCTL_VIDEO_QUERY_AVAIL_MODES,
NULL,
0,
*modeInformation,
modes.NumModes * modes.ModeInformationLength,
&ulTemp))
{
DISPDBG((0, "getAvailableModes - Failed VIDEO_QUERY_AVAIL_MODES"));
EngFreeMem(*modeInformation);
*modeInformation = (PVIDEO_MODE_INFORMATION) NULL;
return(0);
}
//
// Now see which of these modes are supported by the display driver.
// As an internal mechanism, set the length to 0 for the modes we
// DO NOT support.
//
ulTemp = modes.NumModes;
pVideoTemp = *modeInformation;
//
// Mode is rejected if it is not one plane, or not graphics, or is not
// 8 bits per pel.
//
while (ulTemp--)
{
if ((pVideoTemp->NumberOfPlanes != 1 ) ||
!(pVideoTemp->AttributeFlags & VIDEO_MODE_GRAPHICS) ||
(pVideoTemp->BitsPerPlane != 8))
{
DISPDBG((2, "Rejecting miniport mode:"));
DISPDBG((2, " Screen width -- %li", pVideoTemp->VisScreenWidth));
DISPDBG((2, " Screen height -- %li", pVideoTemp->VisScreenHeight));
DISPDBG((2, " Bits per pel -- %li", pVideoTemp->BitsPerPlane *
pVideoTemp->NumberOfPlanes));
DISPDBG((2, " Frequency -- %li", pVideoTemp->Frequency));
pVideoTemp->Length = 0;
}
pVideoTemp = (PVIDEO_MODE_INFORMATION)
(((PUCHAR)pVideoTemp) + modes.ModeInformationLength);
}
return(modes.NumModes);
}
Reference in a new issue Copy permalink