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diff --git a/src/lg_hwcurs.c b/src/lg_hwcurs.c
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+/*
+ * Hardware cursor support for CL-GD546x -- The Laugna family
+ *
+ * lg_hwcurs.c
+ *
+ * (c) 1998 Corin Anderson.
+ * corina@the4cs.com
+ * Tukwila, WA
+ *
+ * Much of this code is inspired by the HW cursor code from XFree86
+ * 3.3.3.
+ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/cirrus/lg_hwcurs.c,v 1.5 2001/05/07 21:59:06 tsi Exp $ */
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+#include "compiler.h"
+
+#include "xf86Pci.h"
+#include "xf86PciInfo.h"
+
+#include "vgaHW.h"
+
+#include "cir.h"
+#define _LG_PRIVATE_
+#include "lg.h"
+#include "lg_xaa.h" /* For BitBLT engine macros */
+
+/*
+#define LG_CURSOR_DEBUG
+*/
+
+#define CURSORWIDTH 64
+#define CURSORHEIGHT 64
+#define CURSORSIZE (CURSORWIDTH*CURSORHEIGHT/8)
+
+/* Some registers used for the HW cursor. */
+enum {
+ PALETTE_READ_ADDR = 0x00A4,
+ PALETTE_WRITE_ADDR = 0x00A8,
+ PALETTE_DATA = 0x00AC,
+
+ PALETTE_STATE = 0x00B0,
+ CURSOR_X_POS = 0x00E0,
+ CURSOR_Y_POS = 0x00E2,
+ CURSOR_PRESET = 0x00E4,
+ CURSOR_CONTROL = 0x00E6,
+ CURSOR_ADDR = 0x00E8
+};
+
+
+static void
+LgFindCursorTile(ScrnInfoPtr pScrn, int *x, int *y, int *width, int *height,
+ CARD32 *curAddr);
+
+
+/*
+ * Set the FG and BG colors of the HW cursor.
+ */
+static void LgSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
+{
+ const CirPtr pCir = CIRPTR(pScrn);
+
+#ifdef LG_CURSOR_DEBUG
+ ErrorF("LgSetCursorColors\n");
+#endif
+
+ /* Enable access to cursor colors in palette */
+ memwb(PALETTE_STATE, (memrb(PALETTE_STATE) | (1<<3)));
+
+ /* Slam in the color */
+
+ memwb(PALETTE_WRITE_ADDR, 0x00);
+ memwb(PALETTE_DATA, (bg >> 16));
+ memwb(PALETTE_DATA, (bg >> 8));
+ memwb(PALETTE_DATA, (bg >> 0));
+ memwb(PALETTE_WRITE_ADDR, 0x0F);
+ memwb(PALETTE_DATA, (fg >> 16));
+ memwb(PALETTE_DATA, (fg >> 8));
+ memwb(PALETTE_DATA, (fg >> 0));
+
+ /* Disable access to cursor colors */
+ memwb(PALETTE_STATE, (memrb(PALETTE_STATE) & ~(1<<3)));
+}
+
+
+/*
+ * Set the (x,y) position of the pointer.
+ *
+ * Note: (x,y) are /frame/ relative, not /framebuffer/ relative.
+ * That is, if the virtual desktop has been panned all the way to
+ * the right, and the pointer is to be in the upper-right hand corner
+ * of the viewable screen, the pointer coords are (0,0) (even though
+ * the pointer is on, say (550,0) wrt the frame buffer). This is, of
+ * course, a /good/ thing -- we don't want to have to deal with where
+ * the virtual display is, etc, in the cursor code.
+ *
+ */
+static void LgSetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
+{
+ const CirPtr pCir = CIRPTR(pScrn);
+
+#if 0
+#ifdef LG_CURSOR_DEBUG
+ ErrorF("LgSetCursorPosition %d %d\n", x, y);
+#endif
+#endif
+
+ if (x < 0 || y < 0) {
+ CARD16 oldPreset = memrw(CURSOR_PRESET);
+ CARD16 newPreset = 0x8080 & oldPreset; /* Reserved bits */
+
+ if (x < 0) {
+ newPreset |= ((-x & 0x7F) << 8);
+ x = 0;
+ }
+
+ if (y < 0) {
+ newPreset |= ((-y & 0x7F) << 0);
+ y = 0;
+ }
+
+ memww(CURSOR_PRESET, newPreset);
+ pCir->CursorIsSkewed = TRUE;
+ } else if (pCir->CursorIsSkewed) {
+ /* Reset the hotspot location. */
+ memww(CURSOR_PRESET, memrw(CURSOR_PRESET & 0x8080));
+ pCir->CursorIsSkewed = FALSE;
+ }
+
+ /* Commit the new position to the card. */
+ memww(CURSOR_X_POS, x);
+ memww(CURSOR_Y_POS, y);
+}
+
+
+/*
+ * Load the cursor image to the card. The cursor image is given in
+ * bits. The format is: ???
+ */
+static void LgLoadCursorImage(ScrnInfoPtr pScrn, unsigned char *bits)
+{
+ const CirPtr pCir = CIRPTR(pScrn);
+ const LgPtr pLg = LGPTR(pCir);
+
+ volatile CARD32 *pXCursorBits = (CARD32 *)bits;
+
+ int l, w;
+
+#ifdef LG_CURSOR_DEBUG
+ ErrorF("LgLoadCursorImage\n");
+#endif
+
+ /* All ("all") we have to do is a simple CPU-to-screen copy of the
+ cursor image to the frame buffer. */
+
+ while (!LgREADY()) {}
+ ;
+
+ /* Wait until there's ample room in the chip's queue */
+ while (memrb(QFREE) < 10) {}
+ ;
+
+ LgSETMODE(HOST2SCR); /* Host-to-screen blit */
+ LgSETROP(0x00CC); /* Source copy */
+
+ /* First, copy our transparent cursor image to the next 1/2 tile boundry */
+ /* Destination */
+ LgSETMDSTXY(pLg->HWCursorImageX+pLg->HWCursorTileWidth, pLg->HWCursorImageY);
+
+ /* Set the source pitch. 0 means that, worst case, the source is
+ alligned only on a byte boundry */
+ LgSETMPHASE1(0);
+
+ LgSETMEXTENTSNOMONOQW(pLg->HWCursorTileWidth, pLg->HWCursorTileHeight);
+
+ for (l = 0; l < CURSORHEIGHT; l++) {
+ /* Plane 0 */
+ for (w = 0; w < CURSORWIDTH >> 5; w++)
+ memwl(HOSTDATA, 0x00000000);
+ /* Plane 1 */
+ for (w = 0; w < CURSORWIDTH >> 5; w++)
+ memwl(HOSTDATA, 0x00000000);
+ }
+
+ /* Now, copy the real cursor image */
+
+ /* Set the destination */
+ LgSETMDSTXY(pLg->HWCursorImageX, pLg->HWCursorImageY);
+
+ /* Set the source pitch. 0 means that, worst case, the source is
+ alligned only on a byte boundry */
+ LgSETMPHASE1(0);
+
+ /* Always copy an entire cursor image to the card. */
+ LgSETMEXTENTSNOMONOQW(pLg->HWCursorTileWidth, pLg->HWCursorTileHeight);
+
+ for (l = 0; l < CURSORHEIGHT; l++) {
+ /* Plane 0 */
+ for (w = 0; w < CURSORWIDTH >> 5; w++)
+ memwl(HOSTDATA, *pXCursorBits++);
+ /* Plane 1 */
+ for (w = 0; w < CURSORWIDTH >> 5; w++)
+ memwl(HOSTDATA, *pXCursorBits++);
+ }
+
+ while (!LgREADY())
+ ;
+}
+
+
+
+/*
+ * LgFindCursorTile() finds the tile of display memory that will be
+ * used to load the pointer image into. The tile chosen will be the
+ * last tile in the last line of the frame buffer.
+ */
+static void
+LgFindCursorTile(ScrnInfoPtr pScrn, int *x, int *y, int *width, int *height,
+ CARD32 *curAddr)
+{
+ CirPtr pCir = CIRPTR(pScrn);
+ LgPtr pLg = LGPTR(pCir);
+
+ int videoRam = pScrn->videoRam; /* in K */
+ int tileHeight = LgLineData[pLg->lineDataIndex].width?8:16;
+ int tileWidth = LgLineData[pLg->lineDataIndex].width?256:128;
+ int tilesPerLine = LgLineData[pLg->lineDataIndex].tilesPerLine;
+ int filledOutTileLines, leftoverMem;
+ int yTile, xTile;
+ int tileNumber;
+
+ filledOutTileLines = videoRam / (tilesPerLine * 2); /* tiles are 2K */
+ leftoverMem = videoRam - filledOutTileLines*tilesPerLine*2;
+
+ if (leftoverMem > 0) {
+ yTile = filledOutTileLines;
+ } else {
+ /* There is no incomplete row of tiles. Then just use the last
+ tile in the last line */
+ yTile = filledOutTileLines - 1;
+ }
+ xTile = 0; /* Always use the first tile in the determined tile row */
+
+ /* The (x,y) coords of the pointer image. */
+ if (x)
+ *x = xTile * tileWidth;
+ if (y)
+ *y = yTile * tileHeight;
+
+ if (width)
+ *width = tileWidth;
+ if (height)
+ *height = tileHeight / 2;
+
+ /* Now, compute the linear address of the cursor image. This process
+ is unpleasant because the memory is tiled, and we essetially have
+ to undo the tiling computation. */
+ if (curAddr) {
+ unsigned int nIL; /* Interleaving */
+ nIL = pLg->memInterleave==0x00? 1 : (pLg->memInterleave==0x40 ? 2 : 4);
+
+ if (PCI_CHIP_GD5465 == pCir->Chipset) {
+ /* The Where's The Cursor formula changed for the 5465. It's really
+ kinda wierd now. */
+ unsigned long page, bank;
+ unsigned int nX, nY;
+
+ nX = xTile * tileWidth;
+ nY = yTile * tileHeight;
+
+ page = (nY / (tileHeight * nIL)) * tilesPerLine + nX / tileWidth;
+ bank = (nX/tileWidth + nY/tileHeight) % nIL + page/(512*nIL);
+ page = page & 0x1FF;
+ *curAddr = bank*1024*1024L + page*2048 + (nY%tileHeight)*tileWidth;
+ } else {
+ tileNumber = (tilesPerLine*nIL) * (yTile/nIL) + yTile % nIL;
+ *curAddr = tileNumber * 2048;
+ }
+ }
+}
+
+
+
+
+/*
+ * Hide/disable the HW cursor.
+ */
+void LgHideCursor(ScrnInfoPtr pScrn)
+{
+ const CirPtr pCir = CIRPTR(pScrn);
+
+ /* To hide the cursor, we kick it off into the corner, and then set the
+ cursor image to be a transparent bitmap. That way, if X continues
+ to move the cursor while it is hidden, there is no way that the user
+ can move the cursor back on screen!
+
+ We don't just clear the cursor enable bit because doesn't work in some
+ cases (like when switching back to text mode).
+ */
+
+#ifdef LG_CURSOR_DEBUG
+ ErrorF("LgHideCursor\n");
+#endif
+
+ memww(CURSOR_CONTROL, (memrw(CURSOR_CONTROL) & 0xFFFE));
+}
+
+void LgShowCursor(ScrnInfoPtr pScrn)
+{
+ const CirPtr pCir = CIRPTR(pScrn);
+ const LgPtr pLg = LGPTR(pCir);
+
+#ifdef LG_CURSOR_DEBUG
+ ErrorF("LgShowCursor\n");
+#endif
+
+ memww(CURSOR_CONTROL,(memrw(CURSOR_CONTROL) | (1<<0)));
+ memww(CURSOR_ADDR,(pLg->HWCursorAddr & 0x7FFC));
+}
+
+
+/*
+ * Can the HW cursor be used?
+ */
+static Bool LgUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
+{
+ ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+
+#ifdef LG_CURSOR_DEBUG
+ ErrorF("LgUseHWCursor\n");
+#endif
+
+ if(pScrn->bitsPerPixel < 8)
+ return FALSE;
+
+ return TRUE;
+}
+
+
+/*
+ * Initialize all the fun HW cursor code.
+ */
+Bool LgHWCursorInit(ScreenPtr pScreen)
+{
+ ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+ CirPtr pCir = CIRPTR(pScrn);
+ xf86CursorInfoPtr infoPtr;
+
+#ifdef LG_CURSOR_DEBUG
+ ErrorF("LgHWCursorInit\n");
+#endif
+
+ infoPtr = xf86CreateCursorInfoRec();
+ if(!infoPtr) return FALSE;
+
+ pCir->CursorInfoRec = infoPtr;
+ LgFindCursorTile(pScrn, &pCir->chip.lg->HWCursorImageX, &pCir->chip.lg->HWCursorImageY,
+ &pCir->chip.lg->HWCursorTileWidth, &pCir->chip.lg->HWCursorTileHeight,
+ &pCir->chip.lg->HWCursorAddr);
+ /* Keep only bits 22:10 of the address. */
+ pCir->chip.lg->HWCursorAddr = (pCir->chip.lg->HWCursorAddr >> 8) & 0x7FFC;
+
+ pCir->CursorIsSkewed = FALSE;
+
+ infoPtr->MaxWidth = CURSORWIDTH;
+ infoPtr->MaxHeight = CURSORHEIGHT;
+ infoPtr->Flags = HARDWARE_CURSOR_TRUECOLOR_AT_8BPP
+ | HARDWARE_CURSOR_AND_SOURCE_WITH_MASK
+ | HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64;
+ infoPtr->SetCursorColors = LgSetCursorColors;
+ infoPtr->SetCursorPosition = LgSetCursorPosition;
+ infoPtr->LoadCursorImage = LgLoadCursorImage;
+ infoPtr->HideCursor = LgHideCursor;
+ infoPtr->ShowCursor = LgShowCursor;
+ infoPtr->UseHWCursor = LgUseHWCursor;
+
+#ifdef LG_CURSOR_DEBUG
+ ErrorF("LgHWCursorInit before xf86InitCursor\n");
+#endif
+
+ return(xf86InitCursor(pScreen, infoPtr));
+}
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