Initial revision

1 files changed, 477 insertions, 0 deletions

diff --git a/hw/xfree86/vbe/vbeModes.c b/hw/xfree86/vbe/vbeModes.c
new file mode 100644
index 000000000..4d4f1bfac
--- /dev/null
+++ b/hw/xfree86/vbe/vbeModes.c
@@ -0,0 +1,477 @@
+#define DEBUG_VERB 2
+/*
+ * Copyright © 2002 David Dawes
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the author(s) shall
+ * not be used in advertising or otherwise to promote the sale, use or other
+ * dealings in this Software without prior written authorization from
+ * the author(s).
+ *
+ * Authors: David Dawes <dawes@xfree86.org>
+ *
+ * $XFree86: xc/programs/Xserver/hw/xfree86/vbe/vbeModes.c,v 1.1 2003/02/17 17:06:45 dawes Exp $
+ */
+
+#include "xf86.h"
+#include "xf86_ansic.h"
+#include "vbe.h"
+#include "vbeModes.h"
+
+static int
+GetDepthFlag(vbeInfoPtr pVbe, int id)
+{
+    VbeModeInfoBlock *mode;
+    int bpp;
+
+    if ((mode = VBEGetModeInfo(pVbe, id)) == NULL)
+	return 0;
+
+    if (VBE_MODE_USABLE(mode, 0)) {
+	int depth;
+
+	if (VBE_MODE_COLOR(mode)) {
+	    depth = mode->RedMaskSize + mode->GreenMaskSize +
+		    mode->BlueMaskSize;
+	} else {
+	    depth = 1;
+	}
+	bpp = mode->BitsPerPixel;
+	VBEFreeModeInfo(mode);
+	mode = NULL;
+	switch (depth) {
+	case 1:
+	    return V_DEPTH_1;
+	case 4:
+	    return V_DEPTH_4;
+	case 8:
+	    return V_DEPTH_8;
+	case 15:
+	    return V_DEPTH_15;
+	case 16:
+	    return V_DEPTH_16;
+	case 24:
+	    switch (bpp) {
+	    case 24:
+		return V_DEPTH_24_24;
+	    case 32:
+		return V_DEPTH_24_32;
+	    }
+	}
+    }
+    if (mode)
+	VBEFreeModeInfo(mode);
+    return 0;
+}
+
+/*
+ * Find supported mode depths.
+ */
+int
+VBEFindSupportedDepths(vbeInfoPtr pVbe, VbeInfoBlock *vbe, int *flags24,
+			int modeTypes)
+{
+    int i = 0;
+    int depths = 0;
+
+    if (modeTypes & V_MODETYPE_VBE) {
+	while (vbe->VideoModePtr[i] != 0xffff) {
+	    depths |= GetDepthFlag(pVbe, vbe->VideoModePtr[i++]);
+	}
+    }
+
+    /*
+     * XXX This possibly only works with VBE 3.0 and later.
+     */
+    if (modeTypes & V_MODETYPE_VGA) {
+	for (i = 0; i < 0x7F; i++) {
+	    depths |= GetDepthFlag(pVbe, i);
+	}
+    }
+
+    if (flags24) {
+	if (depths & V_DEPTH_24_24)
+	    *flags24 |= Support24bppFb;
+	if (depths & V_DEPTH_24_32)
+	    *flags24 |= Support32bppFb;
+    }
+
+    return depths;
+}
+
+static DisplayModePtr
+CheckMode(ScrnInfoPtr pScrn, vbeInfoPtr pVbe, VbeInfoBlock *vbe, int id,
+	  int flags)
+{
+    CARD16 major, minor;
+    VbeModeInfoBlock *mode;
+    DisplayModePtr pMode, p;
+    VbeModeInfoData *data;
+    Bool modeOK = FALSE;
+    ModeStatus status = MODE_OK;
+
+    major = (unsigned)(vbe->VESAVersion >> 8);
+    minor = vbe->VESAVersion & 0xff;
+
+    if ((mode = VBEGetModeInfo(pVbe, id)) == NULL)
+	return NULL;
+
+    /* Does the mode match the depth/bpp? */
+    /* Some BIOS's set BitsPerPixel to 15 instead of 16 for 15/16 */
+    if (VBE_MODE_USABLE(mode, flags) &&
+	((pScrn->bitsPerPixel == 1 && !VBE_MODE_COLOR(mode)) ||
+	 (mode->BitsPerPixel > 8 &&
+	  (mode->RedMaskSize + mode->GreenMaskSize +
+	   mode->BlueMaskSize) == pScrn->depth &&
+	  mode->BitsPerPixel == pScrn->bitsPerPixel) ||
+	 (mode->BitsPerPixel == 15 && pScrn->depth == 15) ||
+	 (mode->BitsPerPixel <= 8 &&
+	  mode->BitsPerPixel == pScrn->bitsPerPixel))) {
+	modeOK = TRUE;
+	xf86ErrorFVerb(DEBUG_VERB, "*");
+    }
+
+    /*
+     * Check if there's a valid monitor mode that this one can be matched
+     * up with.  The actual matching is done later.
+     */
+    if (modeOK) {
+	Bool sizeMatch = FALSE;
+	modeOK = FALSE;
+	for (p = pScrn->monitor->Modes; p != NULL; p = p->next) {
+	    if ((p->HDisplay != mode->XResolution) ||
+		(p->VDisplay != mode->YResolution) ||
+		(p->Flags & (V_INTERLACE | V_DBLSCAN | V_CLKDIV2)))
+		continue;
+	    sizeMatch = TRUE;
+	    /* XXX could support the various V_ flags */
+	    status = xf86CheckModeForMonitor(p, pScrn->monitor);
+	    if (status == MODE_OK) {
+		modeOK = TRUE;
+		break;
+	    }
+	}
+	if (sizeMatch && !modeOK) {
+	    xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+		       "Not using built-in mode \"%dx%d\" (%s)\n",
+		        mode->XResolution, mode->YResolution,
+		        xf86ModeStatusToString(status));
+	}
+    }
+
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "Mode: %x (%dx%d)\n", id, mode->XResolution, mode->YResolution);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	ModeAttributes: 0x%x\n", mode->ModeAttributes);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	WinAAttributes: 0x%x\n", mode->WinAAttributes);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	WinBAttributes: 0x%x\n", mode->WinBAttributes);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	WinGranularity: %d\n", mode->WinGranularity);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	WinSize: %d\n", mode->WinSize);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	WinASegment: 0x%x\n", mode->WinASegment);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	WinBSegment: 0x%x\n", mode->WinBSegment);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	WinFuncPtr: 0x%x\n", mode->WinFuncPtr);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	BytesPerScanline: %d\n", mode->BytesPerScanline);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	XResolution: %d\n", mode->XResolution);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	YResolution: %d\n", mode->YResolution);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	XCharSize: %d\n", mode->XCharSize);
+    xf86ErrorFVerb(DEBUG_VERB,
+           "	YCharSize: %d\n", mode->YCharSize);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	NumberOfPlanes: %d\n", mode->NumberOfPlanes);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	BitsPerPixel: %d\n", mode->BitsPerPixel);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	NumberOfBanks: %d\n", mode->NumberOfBanks);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	MemoryModel: %d\n", mode->MemoryModel);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	BankSize: %d\n", mode->BankSize);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	NumberOfImages: %d\n", mode->NumberOfImages);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	RedMaskSize: %d\n", mode->RedMaskSize);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	RedFieldPosition: %d\n", mode->RedFieldPosition);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	GreenMaskSize: %d\n", mode->GreenMaskSize);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	GreenFieldPosition: %d\n", mode->GreenFieldPosition);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	BlueMaskSize: %d\n", mode->BlueMaskSize);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	BlueFieldPosition: %d\n", mode->BlueFieldPosition);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	RsvdMaskSize: %d\n", mode->RsvdMaskSize);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	RsvdFieldPosition: %d\n", mode->RsvdFieldPosition);
+    xf86ErrorFVerb(DEBUG_VERB,
+	    "	DirectColorModeInfo: %d\n", mode->DirectColorModeInfo);
+    if (major >= 2) {
+	xf86ErrorFVerb(DEBUG_VERB,
+		"	PhysBasePtr: 0x%x\n", mode->PhysBasePtr);
+	if (major >= 3) {
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinBytesPerScanLine: %d\n", mode->LinBytesPerScanLine);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	BnkNumberOfImagePages: %d\n", mode->BnkNumberOfImagePages);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinNumberOfImagePages: %d\n", mode->LinNumberOfImagePages);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinRedMaskSize: %d\n", mode->LinRedMaskSize);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinRedFieldPosition: %d\n", mode->LinRedFieldPosition);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinGreenMaskSize: %d\n", mode->LinGreenMaskSize);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinGreenFieldPosition: %d\n", mode->LinGreenFieldPosition);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinBlueMaskSize: %d\n", mode->LinBlueMaskSize);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinBlueFieldPosition: %d\n", mode->LinBlueFieldPosition);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinRsvdMaskSize: %d\n", mode->LinRsvdMaskSize);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	LinRsvdFieldPosition: %d\n", mode->LinRsvdFieldPosition);
+	    xf86ErrorFVerb(DEBUG_VERB,
+		    "	MaxPixelClock: %d\n", mode->MaxPixelClock);
+	}
+    }
+
+    if (!modeOK) {
+	VBEFreeModeInfo(mode);
+	return NULL;
+    }
+    pMode = xnfcalloc(sizeof(DisplayModeRec), 1);
+
+    pMode->status = MODE_OK;
+    pMode->type = M_T_BUILTIN;
+
+    /* for adjust frame */
+    pMode->HDisplay = mode->XResolution;
+    pMode->VDisplay = mode->YResolution;
+
+    data = xnfcalloc(sizeof(VbeModeInfoData), 1);
+    data->mode = id;
+    data->data = mode;
+    pMode->PrivSize = sizeof(VbeModeInfoData);
+    pMode->Private = (INT32*)data;
+    pMode->next = NULL;
+    return pMode;
+}
+
+/*
+ * Check the available BIOS modes, and extract those that match the
+ * requirements into the modePool.  Note: modePool is a NULL-terminated
+ * list.
+ */
+
+DisplayModePtr
+VBEGetModePool(ScrnInfoPtr pScrn, vbeInfoPtr pVbe, VbeInfoBlock *vbe,
+	       int modeTypes)
+{
+    DisplayModePtr pMode, p = NULL, modePool = NULL;
+    int i = 0;
+
+    if (modeTypes & V_MODETYPE_VBE) {
+	while (vbe->VideoModePtr[i] != 0xffff) {
+	    int id = vbe->VideoModePtr[i++];
+
+	    if ((pMode = CheckMode(pScrn, pVbe, vbe, id, modeTypes)) != NULL) {
+		ModeStatus status = MODE_OK;
+
+		/* Check the mode against a specified virtual size (if any) */
+		if (pScrn->display->virtualX > 0 &&
+		    pMode->HDisplay > pScrn->display->virtualX) {
+		    status = MODE_VIRTUAL_X;
+		}
+		if (pScrn->display->virtualY > 0 &&
+		    pMode->VDisplay > pScrn->display->virtualY) {
+		    status = MODE_VIRTUAL_Y;
+		}
+		if (status != MODE_OK) {
+		     xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+				"Not using mode \"%dx%d\" (%s)\n",
+				pMode->HDisplay, pMode->VDisplay,
+				xf86ModeStatusToString(status));
+		} else {
+		    if (p == NULL) {
+			modePool = pMode;
+		    } else {
+			p->next = pMode;
+		    }
+		    pMode->prev = NULL;
+		    p = pMode;
+		}
+	    }
+	}
+    }
+    if (modeTypes & V_MODETYPE_VGA) {
+	for (i = 0; i < 0x7F; i++) {
+	    if ((pMode = CheckMode(pScrn, pVbe, vbe, i, modeTypes)) != NULL) {
+		ModeStatus status = MODE_OK;
+
+		/* Check the mode against a specified virtual size (if any) */
+		if (pScrn->display->virtualX > 0 &&
+		    pMode->HDisplay > pScrn->display->virtualX) {
+		    status = MODE_VIRTUAL_X;
+		}
+		if (pScrn->display->virtualY > 0 &&
+		    pMode->VDisplay > pScrn->display->virtualY) {
+		    status = MODE_VIRTUAL_Y;
+		}
+		if (status != MODE_OK) {
+		     xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+				"Not using mode \"%dx%d\" (%s)\n",
+				pMode->HDisplay, pMode->VDisplay,
+				xf86ModeStatusToString(status));
+		} else {
+		    if (p == NULL) {
+			modePool = pMode;
+		    } else {
+			p->next = pMode;
+		    }
+		    pMode->prev = NULL;
+		    p = pMode;
+		}
+	    }
+	}
+    }
+    return modePool;
+}
+
+void
+VBESetModeNames(DisplayModePtr pMode)
+{
+    if (!pMode)
+	return;
+
+    do {
+	if (!pMode->name) {
+	    /* Catch "bad" modes. */
+	    if (pMode->HDisplay > 10000 || pMode->HDisplay < 0 ||
+		pMode->VDisplay > 10000 || pMode->VDisplay < 0) {
+		pMode->name = strdup("BADMODE");
+	    } else {
+		pMode->name = xnfalloc(4 + 1 + 4 + 1);
+		sprintf(pMode->name, "%dx%d", pMode->HDisplay, pMode->VDisplay);
+	    }
+	}
+	pMode = pMode->next;
+    } while (pMode);
+}
+
+/*
+ * Go through the monitor modes and selecting the best set of
+ * parameters for each BIOS mode.  Note: This is only supported in
+ * VBE version 3.0 or later.
+ */
+void
+VBESetModeParameters(ScrnInfoPtr pScrn, vbeInfoPtr pVbe)
+{
+    DisplayModePtr pMode;
+    VbeModeInfoData *data;
+
+    pMode = pScrn->modes;
+    do {
+	DisplayModePtr p, best = NULL;
+	ModeStatus status;
+
+	for (p = pScrn->monitor->Modes; p != NULL; p = p->next) {
+	    if ((p->HDisplay != pMode->HDisplay) ||
+		(p->VDisplay != pMode->VDisplay) ||
+		(p->Flags & (V_INTERLACE | V_DBLSCAN | V_CLKDIV2)))
+		continue;
+	    /* XXX could support the various V_ flags */
+	    status = xf86CheckModeForMonitor(p, pScrn->monitor);
+	    if (status != MODE_OK)
+		continue;
+	    if (!best || (p->Clock > best->Clock))
+		best = p;
+	}
+
+	if (best) {
+	    int clock;
+
+	    data = (VbeModeInfoData*)pMode->Private;
+	    pMode->HSync = (float)best->Clock * 1000.0 / best->HTotal + 0.5;
+	    pMode->VRefresh = pMode->HSync / best->VTotal + 0.5;
+	    xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+		       "Attempting to use %dHz refresh for mode \"%s\" (%x)\n",
+		       (int)pMode->VRefresh, pMode->name, data->mode);
+	    data->block = xcalloc(sizeof(VbeCRTCInfoBlock), 1);
+	    data->block->HorizontalTotal = best->HTotal;
+	    data->block->HorizontalSyncStart = best->HSyncStart;
+	    data->block->HorizontalSyncEnd = best->HSyncEnd;
+	    data->block->VerticalTotal = best->VTotal;
+	    data->block->VerticalSyncStart = best->VSyncStart;
+	    data->block->VerticalSyncEnd = best->VSyncEnd;
+	    data->block->Flags = ((best->Flags & V_NHSYNC) ? CRTC_NHSYNC : 0) |
+				 ((best->Flags & V_NVSYNC) ? CRTC_NVSYNC : 0);
+	    data->block->PixelClock = best->Clock * 1000;
+	    /* XXX May not have this. */
+	    clock = VBEGetPixelClock(pVbe, data->mode, data->block->PixelClock);
+#ifdef DEBUG
+	    ErrorF("Setting clock %.2fMHz, closest is %.2fMHz\n",
+		(double)data->block->PixelClock / 1000000.0, 
+		(double)clock / 1000000.0);
+#endif
+	    if (clock)
+		data->block->PixelClock = clock;
+	    data->mode |= (1 << 11);
+	    data->block->RefreshRate = ((double)(data->block->PixelClock) /
+                       (double)(best->HTotal * best->VTotal)) * 100;
+	}
+	pMode = pMode->next;
+    } while (pMode != pScrn->modes);
+}
+
+/*
+ * These wrappers are to allow (temporary) funtionality divergences.
+ */
+int
+VBEValidateModes(ScrnInfoPtr scrp, DisplayModePtr availModes,
+		  char **modeNames, ClockRangePtr clockRanges,
+		  int *linePitches, int minPitch, int maxPitch, int pitchInc,
+		  int minHeight, int maxHeight, int virtualX, int virtualY,
+		  int apertureSize, LookupModeFlags strategy)
+{
+    return xf86ValidateModes(scrp, availModes, modeNames, clockRanges,
+			     linePitches, minPitch, maxPitch, pitchInc,
+			     minHeight, maxHeight, virtualX, virtualY,
+			     apertureSize, strategy);
+}
+
+void
+VBEPrintModes(ScrnInfoPtr scrp)
+{
+    xf86PrintModes(scrp);
+}
+