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567 lines
16 KiB
567 lines
16 KiB
/******************************Module*Header*******************************\
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* Module Name: enable.c
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*
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* This module contains the functions that enable and disable the
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* driver, the pdev, and the surface.
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*
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* Copyright (c) 1992 Microsoft Corporation
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\**************************************************************************/
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#include "driver.h"
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//
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// Build the driver function table gadrvfn with function index/address pairs
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//
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DRVFN gadrvfn[] = {
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{ INDEX_DrvEnablePDEV, (PFN) DrvEnablePDEV },
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{ INDEX_DrvCompletePDEV, (PFN) DrvCompletePDEV },
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{ INDEX_DrvDisablePDEV, (PFN) DrvDisablePDEV },
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{ INDEX_DrvEnableSurface, (PFN) DrvEnableSurface },
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{ INDEX_DrvDisableSurface, (PFN) DrvDisableSurface },
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{ INDEX_DrvAssertMode, (PFN) DrvAssertMode },
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{ INDEX_DrvDitherColor, (PFN) DrvDitherColor },
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{ INDEX_DrvGetModes, (PFN) DrvGetModes },
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{ INDEX_DrvCopyBits, (PFN) DrvCopyBits },
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{ INDEX_DrvBitBlt, (PFN) DrvBitBlt },
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{ INDEX_DrvTextOut, (PFN) DrvTextOut },
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{ INDEX_DrvStrokePath, (PFN) DrvStrokePath },
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{ INDEX_DrvPaint, (PFN) DrvPaint },
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{ INDEX_DrvDisableDriver, (PFN) DrvDisableDriver }
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};
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BOOL bInitDefaultPalette(PPDEV ppdev, DEVINFO *pDevInfo);
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/******************************Public*Routine******************************\
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* DrvEnableDriver
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*
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* Enables the driver by retrieving the drivers function table and version.
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*
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\**************************************************************************/
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BOOL DrvEnableDriver(
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ULONG iEngineVersion,
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ULONG cj,
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PDRVENABLEDATA pded)
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{
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UNREFERENCED_PARAMETER(iEngineVersion);
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// Engine Version is passed down so future drivers can support previous
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// engine versions. A next generation driver can support both the old
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// and new engine conventions if told what version of engine it is
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// working with. For the first version the driver does nothing with it.
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// Fill in as much as we can.
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if (cj >= sizeof(DRVENABLEDATA))
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pded->pdrvfn = gadrvfn;
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if (cj >= (sizeof(ULONG) * 2))
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pded->c = sizeof(gadrvfn) / sizeof(DRVFN);
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// DDI version this driver was targeted for is passed back to engine.
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// Future graphic's engine may break calls down to old driver format.
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if (cj >= sizeof(ULONG))
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pded->iDriverVersion = DDI_DRIVER_VERSION_NT4;
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return(TRUE);
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}
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/******************************Public*Routine******************************\
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* DrvDisableDriver
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*
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* Tells the driver it is being disabled. Release any resources allocated in
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* DrvEnableDriver.
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*
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\**************************************************************************/
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VOID DrvDisableDriver(VOID)
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{
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return;
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}
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/******************************Public*Routine******************************\
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* DrvEnablePDEV
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*
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* DDI function, Enables the Physical Device.
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*
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* Return Value: device handle to pdev.
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*
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\**************************************************************************/
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DHPDEV DrvEnablePDEV(
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DEVMODEW *pDevmode, // Pointer to DEVMODE
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PWSTR pwszLogAddress, // Logical address
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ULONG cPatterns, // number of patterns
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HSURF *ahsurfPatterns, // return standard patterns
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ULONG cjGdiInfo, // Length of memory pointed to by pGdiInfo
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ULONG *pGdiInfo, // Pointer to GdiInfo structure
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ULONG cjDevInfo, // Length of following PDEVINFO structure
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DEVINFO *pDevInfo, // physical device information structure
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HDEV hdev, // HDEV, used for callbacks
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PWSTR pwszDeviceName, // DeviceName - not used
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HANDLE hDriver) // Handle to base driver
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{
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GDIINFO GdiInfo;
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DEVINFO DevInfo;
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PPDEV ppdev;
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UNREFERENCED_PARAMETER(pwszLogAddress);
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UNREFERENCED_PARAMETER(pwszDeviceName);
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// Allocate a physical device structure.
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ppdev = (PPDEV) EngAllocMem(FL_ZERO_MEMORY, sizeof(PDEV), ALLOC_TAG);
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if (ppdev == (PPDEV) NULL)
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{
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DISPDBG((0, "VGA64K: Couldn't allocate PDEV buffer"));
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goto error0;
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}
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// Set up pointers in PDEV to temporary structures we build up to return.
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ppdev->pGdiInfo = &GdiInfo;
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ppdev->pDevInfo = &DevInfo;
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// Save the screen handle in the PDEV.
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ppdev->hDriver = hDriver;
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// Get the current screen mode information. Set up device caps and devinfo.
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if (!bInitPDEV(ppdev,pDevmode))
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{
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DISPDBG((0,"vga64k Couldn't initialize PDEV"));
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goto error1;
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}
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// Initialize palette information.
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if (!bInitDefaultPalette(ppdev, &DevInfo))
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{
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DISPDBG((0, "VGA64K: DrvEnablePDEV failed bInitPalette"));
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goto error1a;
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}
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// Copy the devinfo into the engine buffer.
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memcpy(pDevInfo, ppdev->pDevInfo, min(sizeof(DEVINFO), cjDevInfo));
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// Set the pdevCaps with GdiInfo we have prepared to the list of caps for this
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// pdev.
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memcpy(pGdiInfo, ppdev->pGdiInfo, min(cjGdiInfo, sizeof(GDIINFO)));
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// Set NULL into pointers for stack allocated memory.
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ppdev->pGdiInfo = (GDIINFO *) NULL;
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ppdev->pDevInfo = (DEVINFO *) NULL;
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// Create a clip object we can use when we're given a NULL clip object:
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ppdev->pcoNull = EngCreateClip();
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if (ppdev->pcoNull == NULL)
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{
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RIP("Couldn't create clip");
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goto error2;
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}
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ppdev->pcoNull->iDComplexity = DC_RECT;
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ppdev->pcoNull->rclBounds.left = 0;
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ppdev->pcoNull->rclBounds.top = 0;
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ppdev->pcoNull->rclBounds.right = ppdev->cxScreen;
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ppdev->pcoNull->rclBounds.bottom = ppdev->cyScreen;
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ppdev->pcoNull->fjOptions = OC_BANK_CLIP;
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// pvSaveScan0 is non-NULL only when enumerating banks:
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ppdev->pvSaveScan0 = NULL;
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// We're all done:
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return((DHPDEV) ppdev);
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error2: //@@@
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error1a: //@@@
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error1:
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EngFreeMem(ppdev);
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error0:
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return((DHPDEV) 0);
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}
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/******************************Public*Routine******************************\
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* DrvCompletePDEV
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*
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* Store the HPDEV, the engines handle for this PDEV, in the DHPDEV.
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*
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\**************************************************************************/
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VOID DrvCompletePDEV(
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DHPDEV dhpdev,
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HDEV hdev)
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{
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((PPDEV) dhpdev)->hdevEng = hdev;
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}
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/******************************Public*Routine******************************\
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* DrvDisablePDEV
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*
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* Release the resources allocated in DrvEnablePDEV. If a surface has been
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* enabled DrvDisableSurface will have already been called.
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*
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\**************************************************************************/
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VOID DrvDisablePDEV(
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DHPDEV dhpdev)
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{
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PPDEV ppdev = (PPDEV) dhpdev;
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EngDeleteClip(ppdev->pcoNull);
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EngFreeMem(dhpdev);
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}
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/******************************Public*Routine******************************\
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* DrvEnableSurface
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*
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* Enable the surface for the device. Hook the calls this driver supports.
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*
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* Return: Handle to the surface if successful, 0 for failure.
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*
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\**************************************************************************/
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HSURF DrvEnableSurface(
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DHPDEV dhpdev)
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{
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PPDEV ppdev;
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HSURF hsurf;
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HSURF hsurfBm;
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SIZEL sizl;
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ULONG ulBitmapType;
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FLONG flHooks;
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// Create engine bitmap around frame buffer.
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ppdev = (PPDEV) dhpdev;
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if (!bInitSURF(ppdev, TRUE))
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goto error0;
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sizl.cx = ppdev->cxScreen;
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sizl.cy = ppdev->cyScreen;
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ulBitmapType = BMF_16BPP;
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flHooks = HOOKS_BMF16BPP;
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ASSERTVGA(ppdev->ulBitCount == 16, "Can only handle 16bpp VGAs");
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hsurfBm = (HSURF) EngCreateBitmap(sizl,
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ppdev->lDeltaScreen,
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(ULONG) (ulBitmapType),
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(FLONG) (((ppdev->lDeltaScreen > 0)
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? BMF_TOPDOWN
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: 0)),
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(PVOID) (ppdev->pjScreen));
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if (hsurfBm == 0)
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{
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RIP("Couldn't create surface");
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goto error0;
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}
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if (!EngAssociateSurface(hsurfBm, ppdev->hdevEng, 0))
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{
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RIP("Couldn't create or associate surface");
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goto error1;
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}
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ppdev->hsurfBm = hsurfBm;
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ppdev->pSurfObj = EngLockSurface(hsurfBm);
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if (ppdev->pSurfObj == NULL)
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{
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RIP("Couldn't lock surface");
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goto error1;
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}
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hsurf = EngCreateDeviceSurface((DHSURF) ppdev, sizl, BMF_16BPP);
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if (hsurf == 0)
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{
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RIP("Couldn't create surface");
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goto error2;
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}
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if (!EngAssociateSurface(hsurf, ppdev->hdevEng, flHooks))
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{
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RIP("Couldn't associate surface");
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goto error3;
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}
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ppdev->hsurfEng = hsurf;
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// Disable all the clipping.
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if (!bEnableBanking(ppdev))
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{
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RIP("Couldn't initialize banking");
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goto error3;
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}
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ppdev->pvTmp = (PVOID) EngAllocMem(0, TMP_BUFFER_SIZE, ALLOC_TAG);
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if (ppdev->pvTmp == NULL)
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{
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DISPDBG((0, "VGA64K: Couldn't allocate temporary buffer"));
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goto error4;
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}
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ASSERTVGA(ppdev->lNextScan != 0, "lNextScan shouldn't be zero");
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sizl.cx = ppdev->cxScreen;
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sizl.cy = TMP_BUFFER_SIZE / (sizl.cx * 2);
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ppdev->hbmTmp = EngCreateBitmap(sizl, sizl.cx*2, BMF_16BPP, 0,
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ppdev->pvTmp);
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if (ppdev->hbmTmp == (HBITMAP) 0)
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{
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RIP("Couldn't create temporary bitmap");
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goto error5;
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}
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ppdev->psoTmp = EngLockSurface((HSURF) ppdev->hbmTmp);
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if (ppdev->psoTmp == (SURFOBJ*) NULL)
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{
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RIP("Couldn't lock temporary surface");
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goto error6;
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}
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return(hsurf);
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error6:
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EngDeleteSurface((HSURF) ppdev->hbmTmp);
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error5:
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EngFreeMem(ppdev->pvTmp);
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error4:
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vDisableBanking(ppdev);
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error3:
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EngDeleteSurface(hsurf);
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error2:
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EngUnlockSurface(ppdev->pSurfObj);
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error1:
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EngDeleteSurface(hsurfBm);
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error0:
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//@@@
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DISPDBG((0,"Exiting DrvEnableSurface... \n"));
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//@@@
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return((HSURF) 0);
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}
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/******************************Public*Routine******************************\
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* DrvDisableSurface
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*
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* Free resources allocated by DrvEnableSurface. Release the surface.
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*
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\**************************************************************************/
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VOID DrvDisableSurface(
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DHPDEV dhpdev)
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{
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PPDEV ppdev = (PPDEV) dhpdev;
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EngUnlockSurface(ppdev->psoTmp);
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EngDeleteSurface((HSURF) ppdev->hbmTmp);
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EngFreeMem(ppdev->pvTmp);
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EngDeleteSurface(ppdev->hsurfEng);
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vDisableSURF(ppdev);
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ppdev->hsurfEng = (HSURF) 0;
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vDisableBanking(ppdev);
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}
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/******************************Public*Routine******************************\
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* DrvAssertMode
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*
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* This asks the device to reset itself to the mode of the pdev passed in.
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*
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\**************************************************************************/
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BOOL
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DrvAssertMode(
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DHPDEV dhpdev,
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BOOL bEnable)
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{
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PPDEV ppdev = (PPDEV) dhpdev;
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ULONG ulReturn;
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if (bEnable)
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{
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// The screen must be reenabled, reinitialize the device to
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// a clean state.
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return(bInitSURF(ppdev, FALSE));
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}
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else
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{
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// Call the kernel driver to reset the device to a known state.
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if (EngDeviceIoControl(ppdev->hDriver,
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IOCTL_VIDEO_RESET_DEVICE,
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NULL,
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0,
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NULL,
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0,
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&ulReturn))
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{
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RIP("VIDEO_RESET_DEVICE failed");
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return(FALSE);
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}
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else
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{
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return(TRUE);
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}
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}
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}
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/******************************Public*Routine******************************\
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* DrvGetModes
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*
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* Returns the list of available modes for the device.
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*
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\**************************************************************************/
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ULONG DrvGetModes(
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HANDLE hDriver,
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ULONG cjSize,
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DEVMODEW *pdm)
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{
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DWORD cModes;
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DWORD cbOutputSize;
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PVIDEO_MODE_INFORMATION pVideoModeInformation, pVideoTemp;
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DWORD cOutputModes = cjSize / (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
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DWORD cbModeSize;
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DISPDBG((2, "Vga64k.dll: DrvGetModes\n"));
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cModes = getAvailableModes(hDriver,
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(PVIDEO_MODE_INFORMATION *) &pVideoModeInformation,
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&cbModeSize);
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if (cModes == 0)
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{
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DISPDBG((0, "VGA64k DISP DrvGetModes failed to get mode information"));
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return 0;
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}
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if (pdm == NULL)
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{
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cbOutputSize = cModes * (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
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}
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else
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{
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//
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// Now copy the information for the supported modes back into the output
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// buffer
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//
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cbOutputSize = 0;
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pVideoTemp = pVideoModeInformation;
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do
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{
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if (pVideoTemp->Length != 0)
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{
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if (cOutputModes == 0)
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{
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break;
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}
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//
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// Zero the entire structure to start off with.
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//
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memset(pdm, 0, sizeof(DEVMODEW));
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//
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// Set the name of the device to the name of the DLL.
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//
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memcpy(pdm->dmDeviceName, DLL_NAME, sizeof(DLL_NAME));
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pdm->dmSpecVersion = DM_SPECVERSION;
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pdm->dmDriverVersion = DM_SPECVERSION;
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pdm->dmSize = sizeof(DEVMODEW);
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pdm->dmDriverExtra = DRIVER_EXTRA_SIZE;
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pdm->dmBitsPerPel = pVideoTemp->NumberOfPlanes *
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pVideoTemp->BitsPerPlane;
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pdm->dmPelsWidth = pVideoTemp->VisScreenWidth;
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pdm->dmPelsHeight = pVideoTemp->VisScreenHeight;
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pdm->dmDisplayFrequency = pVideoTemp->Frequency;
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pdm->dmDisplayFlags = 0;
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pdm->dmFields = DM_BITSPERPEL |
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DM_PELSWIDTH |
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DM_PELSHEIGHT |
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DM_DISPLAYFREQUENCY |
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DM_DISPLAYFLAGS ;
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//
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// Go to the next DEVMODE entry in the buffer.
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//
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cOutputModes--;
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pdm = (LPDEVMODEW) ( ((ULONG)pdm) + sizeof(DEVMODEW) +
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DRIVER_EXTRA_SIZE);
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cbOutputSize += (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
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}
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pVideoTemp = (PVIDEO_MODE_INFORMATION)
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(((PUCHAR)pVideoTemp) + cbModeSize);
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} while (--cModes);
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}
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EngFreeMem(pVideoModeInformation);
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return cbOutputSize;
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}
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/******************************Public*Routine******************************\
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* bInitDefaultPalette
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*
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* Initializes default palette for PDEV.
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*
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\**************************************************************************/
|
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|
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BOOL bInitDefaultPalette(PPDEV ppdev, DEVINFO *pDevInfo)
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{
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ppdev->hpalDefault =
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pDevInfo->hpalDefault = EngCreatePalette(PAL_BITFIELDS,
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0,(PULONG) NULL,
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ppdev->flRed,
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ppdev->flGreen,
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ppdev->flBlue);
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if (ppdev->hpalDefault == (HPALETTE) 0)
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{
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RIP("DISP bInitDefaultPalette failed EngCreatePalette\n");
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return(FALSE);
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}
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return(TRUE);
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}
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