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Diffstat (limited to 'src/dummy_driver.c')
| -rw-r--r-- | src/dummy_driver.c | 781 |
1 files changed, 781 insertions, 0 deletions
diff --git a/src/dummy_driver.c b/src/dummy_driver.c new file mode 100644 index 0000000..d95edb0 --- /dev/null +++ b/src/dummy_driver.c @@ -0,0 +1,781 @@ + +/* + * Copyright 2002, SuSE Linux AG, Author: Egbert Eich + */ + +/* All drivers should typically include these */ +#include "xf86.h" +#include "xf86_OSproc.h" +#include "xf86_ansic.h" +#include "xf86Bus.h" + +/* This is used for module versioning */ +#include "xf86Version.h" + +/* All drivers initialising the SW cursor need this */ +#include "mipointer.h" + +/* All drivers implementing backing store need this */ +#include "mibstore.h" + +/* All drivers using the mi colormap manipulation need this */ +#include "micmap.h" + +#include "xf86cmap.h" + +#include "xf86fbman.h" + +#include "fb.h" + +#include "picturestr.h" + +#ifdef XvExtension +#include "xf86xv.h" +#include "Xv.h" +#endif + +/* + * Driver data structures. + */ +#include "dummy.h" + +/* These need to be checked */ +#include "X.h" +#include "Xproto.h" +#include "scrnintstr.h" +#include "servermd.h" +#define _XF86DGA_SERVER_ +#include "extensions/xf86dgastr.h" + +/* Mandatory functions */ +static const OptionInfoRec * DUMMYAvailableOptions(int chipid, int busid); +static void DUMMYIdentify(int flags); +static Bool DUMMYProbe(DriverPtr drv, int flags); +static Bool DUMMYPreInit(ScrnInfoPtr pScrn, int flags); +static Bool DUMMYScreenInit(int Index, ScreenPtr pScreen, int argc, + char **argv); +static Bool DUMMYEnterVT(int scrnIndex, int flags); +static void DUMMYLeaveVT(int scrnIndex, int flags); +static Bool DUMMYCloseScreen(int scrnIndex, ScreenPtr pScreen); +static void DUMMYFreeScreen(int scrnIndex, int flags); +static int DUMMYValidMode(int scrnIndex, DisplayModePtr mode, + Bool verbose, int flags); +static Bool DUMMYSaveScreen(ScreenPtr pScreen, int mode); + +/* Internally used functions */ +static Bool dummyModeInit(ScrnInfoPtr pScrn, DisplayModePtr mode); +static void dummySave(ScrnInfoPtr pScrn); +static void dummyRestore(ScrnInfoPtr pScrn, Bool restoreText); + +/* static void DUMMYDisplayPowerManagementSet(ScrnInfoPtr pScrn, */ +/* int PowerManagementMode, int flags); */ + +#define VERSION 4000 +#define DUMMY_NAME "DUMMY" +#define DUMMY_DRIVER_NAME "dummy" + +#define DUMMY_MAJOR_VERSION 0 +#define DUMMY_MINOR_VERSION 1 +#define DUMMY_PATCHLEVEL 0 + +/* + * This is intentionally screen-independent. It indicates the binding + * choice made in the first PreInit. + */ +static int pix24bpp = 0; + + +/* + * This contains the functions needed by the server after loading the driver + * module. It must be supplied, and gets passed back by the SetupProc + * function in the dynamic case. In the static case, a reference to this + * is compiled in, and this requires that the name of this DriverRec be + * an upper-case version of the driver name. + */ + +DriverRec DUMMY = { + VERSION, + DUMMY_DRIVER_NAME, + DUMMYIdentify, + DUMMYProbe, + DUMMYAvailableOptions, + NULL, + 0 +}; + +static SymTabRec DUMMYChipsets[] = { + { DUMMY_CHIP, "dummy" }, + { -1, NULL } +}; + +typedef enum { + OPTION_SW_CURSOR +} DUMMYOpts; + +static const OptionInfoRec DUMMYOptions[] = { + { OPTION_SW_CURSOR, "SWcursor", OPTV_BOOLEAN, {0}, FALSE }, + { -1, NULL, OPTV_NONE, {0}, FALSE } +}; + + +/* + * List of symbols from other modules that this module references. This + * list is used to tell the loader that it is OK for symbols here to be + * unresolved providing that it hasn't been told that they haven't been + * told that they are essential via a call to xf86LoaderReqSymbols() or + * xf86LoaderReqSymLists(). The purpose is this is to avoid warnings about + * unresolved symbols that are not required. + */ + +static const char *fbSymbols[] = { + "fbPictureInit", + "fbScreenInit", + NULL +}; + +static const char *ramdacSymbols[] = { + "xf86CreateCursorInfoRec", + "xf86DestroyCursorInfoRec", + "xf86InitCursor", + NULL +}; + + +#ifdef XFree86LOADER + +static MODULESETUPPROTO(dummySetup); + +static XF86ModuleVersionInfo dummyVersRec = +{ + "dummy", + MODULEVENDORSTRING, + MODINFOSTRING1, + MODINFOSTRING2, + XF86_VERSION_CURRENT, + DUMMY_MAJOR_VERSION, DUMMY_MINOR_VERSION, DUMMY_PATCHLEVEL, + ABI_CLASS_VIDEODRV, + ABI_VIDEODRV_VERSION, + MOD_CLASS_VIDEODRV, + {0,0,0,0} +}; + +/* + * This is the module init data. + * Its name has to be the driver name followed by ModuleData + */ +XF86ModuleData dummyModuleData = { &dummyVersRec, dummySetup, NULL }; + +static pointer +dummySetup(pointer module, pointer opts, int *errmaj, int *errmin) +{ + static Bool setupDone = FALSE; + + if (!setupDone) { + setupDone = TRUE; + xf86AddDriver(&DUMMY, module, 0); + + /* + * Modules that this driver always requires can be loaded here + * by calling LoadSubModule(). + */ + + /* + * Tell the loader about symbols from other modules that this module + * might refer to. + */ + LoaderRefSymLists(fbSymbols, ramdacSymbols, NULL); + /* + * The return value must be non-NULL on success even though there + * is no TearDownProc. + */ + return (pointer)1; + } else { + if (errmaj) *errmaj = LDR_ONCEONLY; + return NULL; + } +} + +#endif /* XFree86LOADER */ + +static Bool +DUMMYGetRec(ScrnInfoPtr pScrn) +{ + /* + * Allocate a DUMMYRec, and hook it into pScrn->driverPrivate. + * pScrn->driverPrivate is initialised to NULL, so we can check if + * the allocation has already been done. + */ + if (pScrn->driverPrivate != NULL) + return TRUE; + + pScrn->driverPrivate = xnfcalloc(sizeof(DUMMYRec), 1); + + if (pScrn->driverPrivate == NULL) + return FALSE; + return TRUE; +} + +static void +DUMMYFreeRec(ScrnInfoPtr pScrn) +{ + if (pScrn->driverPrivate == NULL) + return; + xfree(pScrn->driverPrivate); + pScrn->driverPrivate = NULL; +} + +static const OptionInfoRec * +DUMMYAvailableOptions(int chipid, int busid) +{ + return DUMMYOptions; +} + +/* Mandatory */ +static void +DUMMYIdentify(int flags) +{ + xf86PrintChipsets(DUMMY_NAME, "Driver for Dummy chipsets", + DUMMYChipsets); +} + +/* Mandatory */ +static Bool +DUMMYProbe(DriverPtr drv, int flags) +{ + Bool foundScreen = FALSE; + int numDevSections, numUsed; + GDevPtr *devSections; + int i; + + if (flags & PROBE_DETECT) + return FALSE; + /* + * Find the config file Device sections that match this + * driver, and return if there are none. + */ + if ((numDevSections = xf86MatchDevice(DUMMY_DRIVER_NAME, + &devSections)) <= 0) { + return FALSE; + } + + numUsed = numDevSections; + + if (numUsed > 0) { + + for (i = 0; i < numUsed; i++) { + ScrnInfoPtr pScrn = NULL; + int entityIndex = + xf86ClaimNoSlot(drv,DUMMY_CHIP,devSections[i],TRUE); + /* Allocate a ScrnInfoRec and claim the slot */ + if ((pScrn = xf86AllocateScreen(drv,0 ))) { + xf86AddEntityToScreen(pScrn,entityIndex); + pScrn->driverVersion = VERSION; + pScrn->driverName = DUMMY_DRIVER_NAME; + pScrn->name = DUMMY_NAME; + pScrn->Probe = DUMMYProbe; + pScrn->PreInit = DUMMYPreInit; + pScrn->ScreenInit = DUMMYScreenInit; + pScrn->SwitchMode = DUMMYSwitchMode; + pScrn->AdjustFrame = DUMMYAdjustFrame; + pScrn->EnterVT = DUMMYEnterVT; + pScrn->LeaveVT = DUMMYLeaveVT; + pScrn->FreeScreen = DUMMYFreeScreen; + pScrn->ValidMode = DUMMYValidMode; + + foundScreen = TRUE; + } + } + } + return foundScreen; +} + +# define RETURN \ + { DUMMYFreeRec(pScrn);\ + return FALSE;\ + } + +/* Mandatory */ +Bool +DUMMYPreInit(ScrnInfoPtr pScrn, int flags) +{ + ClockRangePtr clockRanges; + int i; + DUMMYPtr dPtr; + int maxClock = 230000; + GDevPtr device = xf86GetEntityInfo(pScrn->entityList[0])->device; + + if (flags & PROBE_DETECT) + return TRUE; + + /* Allocate the DummyRec driverPrivate */ + if (!DUMMYGetRec(pScrn)) { + return FALSE; + } +# define RETURN \ + { DUMMYFreeRec(pScrn);\ + return FALSE;\ + } + + dPtr = DUMMYPTR(pScrn); + + pScrn->chipset = (char *)xf86TokenToString(DUMMYChipsets, + DUMMY_CHIP); + + xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Chipset is a DUMMY\n"); + + pScrn->monitor = pScrn->confScreen->monitor; + + if (!xf86SetDepthBpp(pScrn, 8, 8, 8, Support24bppFb | Support32bppFb)) + return FALSE; + else { + /* Check that the returned depth is one we support */ + switch (pScrn->depth) { + case 8: + case 15: + case 16: + case 24: + break; + default: + xf86DrvMsg(pScrn->scrnIndex, X_ERROR, + "Given depth (%d) is not supported by this driver\n", + pScrn->depth); + return FALSE; + } + } + + xf86PrintDepthBpp(pScrn); + if (pScrn->depth == 8) + pScrn->rgbBits = 8; + + /* Get the depth24 pixmap format */ + if (pScrn->depth == 24 && pix24bpp == 0) + pix24bpp = xf86GetBppFromDepth(pScrn, 24); + + /* + * This must happen after pScrn->display has been set because + * xf86SetWeight references it. + */ + if (pScrn->depth > 8) { + /* The defaults are OK for us */ + rgb zeros = {0, 0, 0}; + + if (!xf86SetWeight(pScrn, zeros, zeros)) { + return FALSE; + } else { + /* XXX check that weight returned is supported */ + ; + } + } + + if (!xf86SetDefaultVisual(pScrn, -1)) + return FALSE; + + if (pScrn->depth > 1) { + Gamma zeros = {0.0, 0.0, 0.0}; + + if (!xf86SetGamma(pScrn, zeros)) + return FALSE; + } + + xf86CollectOptions(pScrn, device->options); + /* Process the options */ + if (!(dPtr->Options = xalloc(sizeof(DUMMYOptions)))) + return FALSE; + memcpy(dPtr->Options, DUMMYOptions, sizeof(DUMMYOptions)); + + xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, dPtr->Options); + + xf86GetOptValBool(dPtr->Options, OPTION_SW_CURSOR,&dPtr->swCursor); + + if (device->videoRam != 0) { + pScrn->videoRam = device->videoRam; + xf86DrvMsg(pScrn->scrnIndex, X_CONFIG, "VideoRAM: %d kByte\n", + pScrn->videoRam); + } else { + pScrn->videoRam = 4096; + xf86DrvMsg(pScrn->scrnIndex, X_PROBED, "VideoRAM: %d kByte\n", + pScrn->videoRam); + } + + if (device->dacSpeeds[0] != 0) { + maxClock = device->dacSpeeds[0]; + xf86DrvMsg(pScrn->scrnIndex, X_CONFIG, "Max Clock: %d kHz\n", + maxClock); + } else { + xf86DrvMsg(pScrn->scrnIndex, X_PROBED, "Max Clock: %d kHz\n", + maxClock); + } + + pScrn->progClock = TRUE; + /* + * Setup the ClockRanges, which describe what clock ranges are available, + * and what sort of modes they can be used for. + */ + clockRanges = (ClockRangePtr)xnfcalloc(sizeof(ClockRange), 1); + clockRanges->next = NULL; + clockRanges->ClockMulFactor = 1; + clockRanges->minClock = 11000; /* guessed §§§ */ + clockRanges->maxClock = 300000; + clockRanges->clockIndex = -1; /* programmable */ + clockRanges->interlaceAllowed = TRUE; + clockRanges->doubleScanAllowed = TRUE; + + /* Subtract memory for HW cursor */ + + + { + int apertureSize = (pScrn->videoRam * 1024); + i = xf86ValidateModes(pScrn, pScrn->monitor->Modes, + pScrn->display->modes, clockRanges, + NULL, 256, 2048,(8 * pScrn->bitsPerPixel), + 128, 2048, pScrn->display->virtualX, + pScrn->display->virtualY, apertureSize, + LOOKUP_BEST_REFRESH); + + if (i == -1) + RETURN; + } + + /* Prune the modes marked as invalid */ + xf86PruneDriverModes(pScrn); + + if (i == 0 || pScrn->modes == NULL) { + xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "No valid modes found\n"); + RETURN; + } + + /* + * Set the CRTC parameters for all of the modes based on the type + * of mode, and the chipset's interlace requirements. + * + * Calling this is required if the mode->Crtc* values are used by the + * driver and if the driver doesn't provide code to set them. They + * are not pre-initialised at all. + */ + xf86SetCrtcForModes(pScrn, 0); + + /* Set the current mode to the first in the list */ + pScrn->currentMode = pScrn->modes; + + /* Print the list of modes being used */ + xf86PrintModes(pScrn); + + /* If monitor resolution is set on the command line, use it */ + xf86SetDpi(pScrn, 0, 0); + + if (xf86LoadSubModule(pScrn, "fb") == NULL) { + RETURN; + } + xf86LoaderReqSymLists(fbSymbols, NULL); + + if (!dPtr->swCursor) { + if (!xf86LoadSubModule(pScrn, "ramdac")) + RETURN; + xf86LoaderReqSymLists(ramdacSymbols, NULL); + } + + return TRUE; +} +#undef RETURN + +/* Mandatory */ +static Bool +DUMMYEnterVT(int scrnIndex, int flags) +{ + ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; + + /* Should we re-save the text mode on each VT enter? */ + if(!dummyModeInit(pScrn, pScrn->currentMode)) + return FALSE; + + DUMMYAdjustFrame(pScrn->scrnIndex, pScrn->frameX0, pScrn->frameY0, 0); + + return TRUE; +} + +/* Mandatory */ +static void +DUMMYLeaveVT(int scrnIndex, int flags) +{ + ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; + dummyRestore(pScrn, TRUE); +} + +static void +DUMMYLoadPalette( + ScrnInfoPtr pScrn, + int numColors, + int *indices, + LOCO *colors, + VisualPtr pVisual +){ + int i, index, shift, Gshift; + DUMMYPtr dPtr = DUMMYPTR(pScrn); + + switch(pScrn->depth) { + case 15: + shift = Gshift = 1; + break; + case 16: + shift = 0; + Gshift = 0; + break; + default: + shift = Gshift = 0; + break; + } + + for(i = 0; i < numColors; i++) { + index = indices[i]; + dPtr->colors[index].red = colors[index].red << shift; + dPtr->colors[index].green = colors[index].green << Gshift; + dPtr->colors[index].blue = colors[index].blue << shift; + } + +} + +/* Mandatory */ +static Bool +DUMMYScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv) +{ + ScrnInfoPtr pScrn; + DUMMYPtr dPtr; + int ret; + VisualPtr visual; + int height, width; + + /* + * we need to get the ScrnInfoRec for this screen, so let's allocate + * one first thing + */ + pScrn = xf86Screens[pScreen->myNum]; + dPtr = DUMMYPTR(pScrn); + + + if (!(dPtr->FBBase = xalloc(pScrn->videoRam * 1024))) + return FALSE; + + /* + * next we save the current state and setup the first mode + */ + dummySave(pScrn); + + if (!dummyModeInit(pScrn,pScrn->currentMode)) + return FALSE; + DUMMYAdjustFrame(scrnIndex, pScrn->frameX0, pScrn->frameY0, 0); + + /* + * Reset visual list. + */ + miClearVisualTypes(); + + /* Setup the visuals we support. */ + + if (!miSetVisualTypes(pScrn->depth, + miGetDefaultVisualMask(pScrn->depth), + pScrn->rgbBits, pScrn->defaultVisual)) + return FALSE; + + if (!miSetPixmapDepths ()) return FALSE; + + /* + * Call the framebuffer layer's ScreenInit function, and fill in other + * pScreen fields. + */ + width = pScrn->virtualX; + height = pScrn->virtualY; + + ret = fbScreenInit(pScreen, dPtr->FBBase, + pScrn->virtualX, pScrn->virtualY, + pScrn->xDpi, pScrn->yDpi, + pScrn->displayWidth, pScrn->bitsPerPixel); + if (!ret) + return FALSE; + + if (pScrn->depth > 8) { + /* Fixup RGB ordering */ + visual = pScreen->visuals + pScreen->numVisuals; + while (--visual >= pScreen->visuals) { + if ((visual->class | DynamicClass) == DirectColor) { + visual->offsetRed = pScrn->offset.red; + visual->offsetGreen = pScrn->offset.green; + visual->offsetBlue = pScrn->offset.blue; + visual->redMask = pScrn->mask.red; + visual->greenMask = pScrn->mask.green; + visual->blueMask = pScrn->mask.blue; + } + } + } + + /* must be after RGB ordering fixed */ + fbPictureInit(pScreen, 0, 0); + + xf86SetBlackWhitePixels(pScreen); + + DUMMYDGAInit(pScreen); + + if (dPtr->swCursor) + xf86DrvMsg(scrnIndex, X_CONFIG, "Using Software Cursor.\n"); + + { + + + BoxRec AvailFBArea; + int lines = pScrn->videoRam * 1024 / + (pScrn->displayWidth * (pScrn->bitsPerPixel >> 3)); + AvailFBArea.x1 = 0; + AvailFBArea.y1 = 0; + AvailFBArea.x2 = pScrn->displayWidth; + AvailFBArea.y2 = lines; + xf86InitFBManager(pScreen, &AvailFBArea); + + xf86DrvMsg(pScrn->scrnIndex, X_INFO, + "Using %i scanlines of offscreen memory \n" + , lines - pScrn->virtualY); + } + + miInitializeBackingStore(pScreen); + xf86SetBackingStore(pScreen); + xf86SetSilkenMouse(pScreen); + + /* Initialise cursor functions */ + miDCInitialize (pScreen, xf86GetPointerScreenFuncs()); + + + if (!dPtr->swCursor) { + /* HW cursor functions */ + if (!DUMMYCursorInit(pScreen)) { + xf86DrvMsg(scrnIndex, X_ERROR, + "Hardware cursor initialization failed\n"); + return FALSE; + } + } + + /* Initialise default colourmap */ + if(!miCreateDefColormap(pScreen)) + return FALSE; + + if (!xf86HandleColormaps(pScreen, 256, pScrn->rgbBits, + DUMMYLoadPalette, NULL, + CMAP_PALETTED_TRUECOLOR + | CMAP_RELOAD_ON_MODE_SWITCH)) + return FALSE; + +/* DUMMYInitVideo(pScreen); */ + + pScreen->SaveScreen = DUMMYSaveScreen; + + + /* Wrap the current CloseScreen function */ + dPtr->CloseScreen = pScreen->CloseScreen; + pScreen->CloseScreen = DUMMYCloseScreen; + + /* Report any unused options (only for the first generation) */ + if (serverGeneration == 1) { + xf86ShowUnusedOptions(pScrn->scrnIndex, pScrn->options); + } + + return TRUE; +} + +/* Mandatory */ +Bool +DUMMYSwitchMode(int scrnIndex, DisplayModePtr mode, int flags) +{ + return dummyModeInit(xf86Screens[scrnIndex], mode); +} + +/* Mandatory */ +void +DUMMYAdjustFrame(int scrnIndex, int x, int y, int flags) +{ + ScrnInfoPtr pScrn; + int Base; + + pScrn = xf86Screens[scrnIndex]; + + Base = (y * pScrn->displayWidth + x) >> 2; + + /* Scale Base by the number of bytes per pixel. */ + switch (pScrn->depth) { + case 8 : + break; + case 15 : + case 16 : + Base *= 2; + break; + case 24 : + Base *= 3; + break; + default : + break; + } +} + +/* Mandatory */ +static Bool +DUMMYCloseScreen(int scrnIndex, ScreenPtr pScreen) +{ + ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; + DUMMYPtr dPtr = DUMMYPTR(pScrn); + + if(pScrn->vtSema){ + dummyRestore(pScrn, TRUE); + xfree(dPtr->FBBase); + } + + if (dPtr->CursorInfo) + xf86DestroyCursorInfoRec(dPtr->CursorInfo); + + pScrn->vtSema = FALSE; + pScreen->CloseScreen = dPtr->CloseScreen; + return (*pScreen->CloseScreen)(scrnIndex, pScreen); +} + +/* Optional */ +static void +DUMMYFreeScreen(int scrnIndex, int flags) +{ + DUMMYFreeRec(xf86Screens[scrnIndex]); +} + +static Bool +DUMMYSaveScreen(ScreenPtr pScreen, int mode) +{ + ScrnInfoPtr pScrn = NULL; + DUMMYPtr dPtr; + + if (pScreen != NULL) { + pScrn = xf86Screens[pScreen->myNum]; + dPtr = DUMMYPTR(pScrn); + + dPtr->screenSaver = xf86IsUnblank(mode); + } + return TRUE; +} + +/* Optional */ +static int +DUMMYValidMode(int scrnIndex, DisplayModePtr mode, Bool verbose, int flags) +{ + return(MODE_OK); +} + +static void +dummySave(ScrnInfoPtr pScrn) +{ +} + +static void +dummyRestore(ScrnInfoPtr pScrn, Bool restoreText) +{ +} + +static Bool +dummyModeInit(ScrnInfoPtr pScrn, DisplayModePtr mode) +{ + dummyRestore(pScrn, FALSE); + + return(TRUE); +} + |