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-rw-r--r--src/s3v_dga.c362
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diff --git a/src/s3v_dga.c b/src/s3v_dga.c
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+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/s3virge/s3v_dga.c,v 1.7 2002/01/14 18:02:58 dawes Exp $ */
+
+/*
+Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
+
+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, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+XFREE86 PROJECT 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 XFree86 Project 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 XFree86 Project.
+*/
+
+/*
+Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
+
+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, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+XFREE86 PROJECT 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 XFree86 Project 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 XFree86 Project.
+*/
+
+/*
+ * file: s3v_dga.c
+ * ported from mga
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+#include "xf86Pci.h"
+#include "xf86PciInfo.h"
+#include "xaa.h"
+#include "xaalocal.h"
+#include "s3v.h"
+#if 0
+#include "mga_bios.h"
+#include "mga.h"
+#include "mga_reg.h"
+#include "mga_macros.h"
+#endif
+#include "dgaproc.h"
+
+
+static Bool S3V_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
+ int *, int *, int *);
+static Bool S3V_SetMode(ScrnInfoPtr, DGAModePtr);
+static int S3V_GetViewport(ScrnInfoPtr);
+static void S3V_SetViewport(ScrnInfoPtr, int, int, int);
+static void S3V_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
+static void S3V_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
+/* dummy... */
+#if 0
+static void MGA_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int,
+ unsigned long);
+#endif
+
+static
+DGAFunctionRec S3V_DGAFuncs = {
+ S3V_OpenFramebuffer,
+ NULL,
+ S3V_SetMode,
+ S3V_SetViewport,
+ S3V_GetViewport,
+ S3VAccelSync,
+ S3V_FillRect,
+ S3V_BlitRect,
+ NULL
+ /* dummy... MGA_BlitTransRect */
+};
+
+
+Bool
+S3VDGAInit(ScreenPtr pScreen)
+{
+ ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+ S3VPtr ps3v = S3VPTR(pScrn);
+ DGAModePtr modes = NULL, newmodes = NULL, currentMode;
+ DisplayModePtr pMode, firstMode;
+ int Bpp = pScrn->bitsPerPixel >> 3;
+ int num = 0;
+ Bool oneMore;
+
+ PVERB5(" S3VDGAInit\n");
+
+ pMode = firstMode = pScrn->modes;
+
+ while(pMode) {
+ /* The MGA driver wasn't designed with switching depths in
+ mind. Subsequently, large chunks of it will probably need
+ to be rewritten to accommodate depth changes in DGA mode */
+
+ if(0 /*pScrn->displayWidth != pMode->HDisplay*/) {
+ newmodes = xrealloc(modes, (num + 2) * sizeof(DGAModeRec));
+ oneMore = TRUE;
+ } else {
+ newmodes = xrealloc(modes, (num + 1) * sizeof(DGAModeRec));
+ oneMore = FALSE;
+ }
+
+ if(!newmodes) {
+ xfree(modes);
+ return FALSE;
+ }
+ modes = newmodes;
+
+SECOND_PASS:
+
+ currentMode = modes + num;
+ num++;
+
+ currentMode->mode = pMode;
+ currentMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
+ if(!ps3v->NoAccel)
+ currentMode->flags |= DGA_FILL_RECT | DGA_BLIT_RECT;
+ if(pMode->Flags & V_DBLSCAN)
+ currentMode->flags |= DGA_DOUBLESCAN;
+ if(pMode->Flags & V_INTERLACE)
+ currentMode->flags |= DGA_INTERLACED;
+ currentMode->byteOrder = pScrn->imageByteOrder;
+ currentMode->depth = pScrn->depth;
+ currentMode->bitsPerPixel = pScrn->bitsPerPixel;
+ currentMode->red_mask = pScrn->mask.red;
+ currentMode->green_mask = pScrn->mask.green;
+ currentMode->blue_mask = pScrn->mask.blue;
+ currentMode->visualClass = (Bpp == 1) ? PseudoColor : TrueColor;
+ currentMode->viewportWidth = pMode->HDisplay;
+ currentMode->viewportHeight = pMode->VDisplay;
+ /* currentMode->xViewportStep = (3 - ps3v->BppShift); */
+ /* always 1 on ViRGE ? */
+ currentMode->xViewportStep = 1;
+ currentMode->yViewportStep = 1;
+ currentMode->viewportFlags = DGA_FLIP_RETRACE;
+ /* currentMode->offset = ps3v->YDstOrg * (pScrn->bitsPerPixel / 8);
+ * MGA, 0 for ViRGE */
+ currentMode->offset = 0;
+ /* currentMode->address = pMga->FbStart; MGA */
+ currentMode->address = ps3v->FBBase;
+/*cep*/
+ xf86ErrorFVerb(VERBLEV,
+ " S3VDGAInit firstone vpWid=%d, vpHgt=%d, Bpp=%d, mdbitsPP=%d\n",
+ currentMode->viewportWidth,
+ currentMode->viewportHeight,
+ Bpp,
+ currentMode->bitsPerPixel
+ );
+
+
+ if(oneMore) { /* first one is narrow width */
+ currentMode->bytesPerScanline = ((pMode->HDisplay * Bpp) + 3) & ~3L;
+ currentMode->imageWidth = pMode->HDisplay;
+ /* currentMode->imageHeight = pMga->FbUsableSize /
+ currentMode->bytesPerScanline;
+ MGA above */
+ currentMode->imageHeight = pMode->VDisplay;
+ currentMode->pixmapWidth = currentMode->imageWidth;
+ currentMode->pixmapHeight = currentMode->imageHeight;
+ currentMode->maxViewportX = currentMode->imageWidth -
+ currentMode->viewportWidth;
+ /* this might need to get clamped to some maximum */
+ currentMode->maxViewportY = currentMode->imageHeight -
+ currentMode->viewportHeight;
+ oneMore = FALSE;
+
+/*cep*/
+ xf86ErrorFVerb(VERBLEV,
+ " S3VDGAInit imgHgt=%d, ram=%d, bytesPerScanl=%d\n",
+ currentMode->imageHeight,
+ ps3v->videoRambytes,
+ currentMode->bytesPerScanline );
+
+ goto SECOND_PASS;
+ } else {
+ currentMode->bytesPerScanline =
+ ((pScrn->displayWidth * Bpp) + 3) & ~3L;
+ currentMode->imageWidth = pScrn->displayWidth;
+ /* currentMode->imageHeight = pMga->FbUsableSize /
+ currentMode->bytesPerScanline;
+ */
+ currentMode->imageHeight = ps3v->videoRambytes /
+ currentMode->bytesPerScanline;
+ currentMode->pixmapWidth = currentMode->imageWidth;
+ currentMode->pixmapHeight = currentMode->imageHeight;
+ currentMode->maxViewportX = currentMode->imageWidth -
+ currentMode->viewportWidth;
+ /* this might need to get clamped to some maximum */
+ currentMode->maxViewportY = currentMode->imageHeight -
+ currentMode->viewportHeight;
+ }
+
+ pMode = pMode->next;
+ if(pMode == firstMode)
+ break;
+ }
+
+ ps3v->numDGAModes = num;
+ ps3v->DGAModes = modes;
+
+ return DGAInit(pScreen, &S3V_DGAFuncs, modes, num);
+}
+
+
+static Bool
+S3V_SetMode(
+ ScrnInfoPtr pScrn,
+ DGAModePtr pMode
+){
+ static int OldDisplayWidth[MAXSCREENS];
+ int index = pScrn->pScreen->myNum;
+
+ S3VPtr ps3v = S3VPTR(pScrn);
+
+ if(!pMode) { /* restore the original mode */
+ /* put the ScreenParameters back */
+
+ pScrn->displayWidth = OldDisplayWidth[index];
+
+ S3VSwitchMode(index, pScrn->currentMode, 0);
+ ps3v->DGAactive = FALSE;
+ } else {
+ if(!ps3v->DGAactive) { /* save the old parameters */
+ OldDisplayWidth[index] = pScrn->displayWidth;
+
+ ps3v->DGAactive = TRUE;
+ }
+
+ pScrn->displayWidth = pMode->bytesPerScanline /
+ (pMode->bitsPerPixel >> 3);
+
+ S3VSwitchMode(index, pMode->mode, 0);
+ }
+
+ return TRUE;
+}
+
+
+
+static int
+S3V_GetViewport(
+ ScrnInfoPtr pScrn
+){
+ S3VPtr ps3v = S3VPTR(pScrn);
+
+ return ps3v->DGAViewportStatus;
+}
+
+static void
+S3V_SetViewport(
+ ScrnInfoPtr pScrn,
+ int x, int y,
+ int flags
+){
+ S3VPtr ps3v = S3VPTR(pScrn);
+
+ S3VAdjustFrame(pScrn->pScreen->myNum, x, y, flags);
+ ps3v->DGAViewportStatus = 0; /* MGAAdjustFrame loops until finished */
+}
+
+static void
+S3V_FillRect (
+ ScrnInfoPtr pScrn,
+ int x, int y, int w, int h,
+ unsigned long color
+){
+ S3VPtr ps3v = S3VPTR(pScrn);
+
+ if(ps3v->AccelInfoRec) {
+ (*ps3v->AccelInfoRec->SetupForSolidFill)(pScrn, color, GXcopy, ~0);
+ (*ps3v->AccelInfoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h);
+ SET_SYNC_FLAG(ps3v->AccelInfoRec);
+ }
+}
+
+static void
+S3V_BlitRect(
+ ScrnInfoPtr pScrn,
+ int srcx, int srcy,
+ int w, int h,
+ int dstx, int dsty
+){
+ S3VPtr ps3v = S3VPTR(pScrn);
+
+ if(ps3v->AccelInfoRec) {
+ int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
+ int ydir = (srcy < dsty) ? -1 : 1;
+
+ (*ps3v->AccelInfoRec->SetupForScreenToScreenCopy)(
+ pScrn, xdir, ydir, GXcopy, ~0, -1);
+ (*ps3v->AccelInfoRec->SubsequentScreenToScreenCopy)(
+ pScrn, srcx, srcy, dstx, dsty, w, h);
+ SET_SYNC_FLAG(ps3v->AccelInfoRec);
+ }
+}
+
+#if 0
+static void
+MGA_BlitTransRect(
+ ScrnInfoPtr pScrn,
+ int srcx, int srcy,
+ int w, int h,
+ int dstx, int dsty,
+ unsigned long color
+){
+ /* this one should be separate since the XAA function would
+ prohibit usage of ~0 as the key */
+}
+#endif
+
+static Bool
+S3V_OpenFramebuffer(
+ ScrnInfoPtr pScrn,
+ char **name,
+ unsigned char **mem,
+ int *size,
+ int *offset,
+ int *flags
+){
+ S3VPtr ps3v = S3VPTR(pScrn);
+
+ *name = NULL; /* no special device */
+ *mem = (unsigned char*)ps3v->PciInfo->memBase[0];
+ *size = ps3v->videoRambytes;
+ *offset = 0;
+ *flags = DGA_NEED_ROOT;
+
+ return TRUE;
+}
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