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Diffstat (limited to 'hw/kdrive/trident/tridentcurs.c')
-rw-r--r--hw/kdrive/trident/tridentcurs.c414
1 files changed, 414 insertions, 0 deletions
diff --git a/hw/kdrive/trident/tridentcurs.c b/hw/kdrive/trident/tridentcurs.c
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+++ b/hw/kdrive/trident/tridentcurs.c
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+/*
+ * $Id$
+ *
+ * Copyright © 1999 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+/* $XFree86: $ */
+
+#include "trident.h"
+#include "cursorstr.h"
+
+#define SetupCursor(s) KdScreenPriv(s); \
+ tridentCardInfo(pScreenPriv); \
+ tridentScreenInfo(pScreenPriv); \
+ TridentCursor *pCurPriv = &tridents->cursor
+
+static void
+_tridentMoveCursor (ScreenPtr pScreen, int x, int y)
+{
+ SetupCursor(pScreen);
+ CARD8 xlow, xhigh, ylow, yhigh;
+ CARD8 xoff, yoff;
+
+ x -= pCurPriv->xhot;
+ xoff = 0;
+ if (x < 0)
+ {
+ xoff = -x;
+ x = 0;
+ }
+ y -= pCurPriv->yhot;
+ yoff = 0;
+ if (y < 0)
+ {
+ yoff = -y;
+ y = 0;
+ }
+ xlow = (CARD8) x;
+ xhigh = (CARD8) (x >> 8);
+ ylow = (CARD8) y;
+ yhigh = (CARD8) (y >> 8);
+
+
+ /* This is the recommended order to move the cursor */
+
+ tridentWriteIndex (tridentc, 0x3d4, 0x41, xhigh);
+ tridentWriteIndex (tridentc, 0x3d4, 0x40, xlow);
+ tridentWriteIndex (tridentc, 0x3d4, 0x42, ylow);
+ tridentWriteIndex (tridentc, 0x3d4, 0x46, xoff);
+ tridentWriteIndex (tridentc, 0x3d4, 0x47, yoff);
+ tridentWriteIndex (tridentc, 0x3d4, 0x43, yhigh);
+}
+
+static void
+tridentMoveCursor (ScreenPtr pScreen, int x, int y)
+{
+ SetupCursor (pScreen);
+
+ if (!pCurPriv->has_cursor)
+ return;
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ _tridentMoveCursor (pScreen, x, y);
+}
+
+
+static void
+tridentAllocCursorColors (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+ CursorPtr pCursor = pCurPriv->pCursor;
+ xColorItem sourceColor, maskColor;
+
+ /*
+ * Set these to an invalid pixel value so that
+ * when the store colors comes through, the cursor
+ * won't get recolored
+ */
+ pCurPriv->source = ~0;
+ pCurPriv->mask = ~0;
+ /*
+ * XXX S3 bug workaround; s3 chip doesn't use RGB values from
+ * the cursor color registers as documented, rather it uses
+ * them to index the DAC. This is in the errata though.
+ */
+ sourceColor.red = pCursor->foreRed;
+ sourceColor.green = pCursor->foreGreen;
+ sourceColor.blue = pCursor->foreBlue;
+ FakeAllocColor(pScreenPriv->pInstalledmap, &sourceColor);
+ maskColor.red = pCursor->backRed;
+ maskColor.green = pCursor->backGreen;
+ maskColor.blue = pCursor->backBlue;
+ FakeAllocColor(pScreenPriv->pInstalledmap, &maskColor);
+ FakeFreeColor(pScreenPriv->pInstalledmap, sourceColor.pixel);
+ FakeFreeColor(pScreenPriv->pInstalledmap, maskColor.pixel);
+
+ pCurPriv->source = sourceColor.pixel;
+ pCurPriv->mask = maskColor.pixel;
+ switch (pScreenPriv->screen->bitsPerPixel) {
+ case 4:
+ pCurPriv->source |= pCurPriv->source << 4;
+ pCurPriv->mask |= pCurPriv->mask << 4;
+ case 8:
+ pCurPriv->source |= pCurPriv->source << 8;
+ pCurPriv->mask |= pCurPriv->mask << 8;
+ case 16:
+ pCurPriv->source |= pCurPriv->source << 16;
+ pCurPriv->mask |= pCurPriv->mask << 16;
+ }
+}
+
+static void
+tridentSetCursorColors (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+ CursorPtr pCursor = pCurPriv->pCursor;
+ CARD32 fg, bg;
+
+ fg = pCurPriv->source;
+ bg = pCurPriv->mask;
+ tridentWriteIndex (tridentc, 0x3d4, 0x48, fg);
+ tridentWriteIndex (tridentc, 0x3d4, 0x49, fg >> 8);
+ tridentWriteIndex (tridentc, 0x3d4, 0x4a, fg >> 16);
+
+ tridentWriteIndex (tridentc, 0x3d4, 0x4c, bg);
+ tridentWriteIndex (tridentc, 0x3d4, 0x4d, bg >> 8);
+ tridentWriteIndex (tridentc, 0x3d4, 0x4e, bg >> 16);
+}
+
+void
+tridentRecolorCursor (ScreenPtr pScreen, int ndef, xColorItem *pdef)
+{
+ SetupCursor (pScreen);
+ CursorPtr pCursor = pCurPriv->pCursor;
+ xColorItem sourceColor, maskColor;
+
+ if (!pCurPriv->has_cursor || !pCursor)
+ return;
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ if (pdef)
+ {
+ while (ndef)
+ {
+ if (pdef->pixel == pCurPriv->source ||
+ pdef->pixel == pCurPriv->mask)
+ break;
+ ndef--;
+ }
+ if (!ndef)
+ return;
+ }
+ tridentAllocCursorColors (pScreen);
+ tridentSetCursorColors (pScreen);
+}
+
+#define InvertBits32(v) { \
+ v = ((v & 0x55555555) << 1) | ((v >> 1) & 0x55555555); \
+ v = ((v & 0x33333333) << 2) | ((v >> 2) & 0x33333333); \
+ v = ((v & 0x0f0f0f0f) << 4) | ((v >> 4) & 0x0f0f0f0f); \
+}
+
+static void
+tridentLoadCursor (ScreenPtr pScreen, int x, int y)
+{
+ SetupCursor(pScreen);
+ CursorPtr pCursor = pCurPriv->pCursor;
+ CursorBitsPtr bits = pCursor->bits;
+ int w, h;
+ CARD32 *ram, *msk, *mskLine, *src, *srcLine;
+ int i, j;
+ int cursor_address;
+ int lwsrc;
+ unsigned char ramdac_control_;
+ CARD32 offset;
+
+ /*
+ * Allocate new colors
+ */
+ tridentAllocCursorColors (pScreen);
+
+ pCurPriv->pCursor = pCursor;
+ pCurPriv->xhot = pCursor->bits->xhot;
+ pCurPriv->yhot = pCursor->bits->yhot;
+
+ /*
+ * Stick new image into cursor memory
+ */
+ ram = (CARD32 *) tridents->cursor_base;
+ mskLine = (CARD32 *) bits->mask;
+ srcLine = (CARD32 *) bits->source;
+
+ h = bits->height;
+ if (h > TRIDENT_CURSOR_HEIGHT)
+ h = TRIDENT_CURSOR_HEIGHT;
+
+ lwsrc = BitmapBytePad(bits->width) / 4; /* words per line */
+
+ for (i = 0; i < TRIDENT_CURSOR_HEIGHT; i++) {
+ msk = mskLine;
+ src = srcLine;
+ mskLine += lwsrc;
+ srcLine += lwsrc;
+ for (j = 0; j < TRIDENT_CURSOR_WIDTH / 32; j++) {
+
+ CARD32 m, s;
+
+#if 1
+ if (i < h && j < lwsrc)
+ {
+ m = *msk++;
+ s = *src++;
+ InvertBits32(m);
+ InvertBits32(s);
+ }
+ else
+ {
+ m = 0;
+ s = 0;
+ }
+#endif
+ *ram++ = m;
+ *ram++ = s;
+ }
+ }
+
+ /* Set address for cursor bits */
+ offset = tridents->cursor_base - (CARD8 *) tridentc->fb.fb;
+ offset >>= 10;
+ tridentWriteIndex (tridentc, 0x3d4, 0x44, (CARD8) (offset & 0xff));
+ tridentWriteIndex (tridentc, 0x3d4, 0x45, (CARD8) (offset >> 8));
+
+ /* Set new color */
+ tridentSetCursorColors (pScreen);
+
+ /* Enable the cursor */
+ tridentWriteIndex (tridentc, 0x3d4, 0x50, 0xc1);
+
+ /* Move to new position */
+ tridentMoveCursor (pScreen, x, y);
+}
+
+static void
+tridentUnloadCursor (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ /* Disable cursor */
+ tridentWriteIndex (tridentc, 0x3d4, 0x50, 0);
+}
+
+static Bool
+tridentRealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
+{
+ SetupCursor(pScreen);
+
+ if (!pScreenPriv->enabled)
+ return TRUE;
+
+ /* miRecolorCursor does this */
+ if (pCurPriv->pCursor == pCursor)
+ {
+ if (pCursor)
+ {
+ int x, y;
+
+ miPointerPosition (&x, &y);
+ tridentLoadCursor (pScreen, x, y);
+ }
+ }
+ return TRUE;
+}
+
+static Bool
+tridentUnrealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
+{
+ return TRUE;
+}
+
+static void
+tridentSetCursor (ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
+{
+ SetupCursor(pScreen);
+
+ pCurPriv->pCursor = pCursor;
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ if (pCursor)
+ tridentLoadCursor (pScreen, x, y);
+ else
+ tridentUnloadCursor (pScreen);
+}
+
+miPointerSpriteFuncRec tridentPointerSpriteFuncs = {
+ tridentRealizeCursor,
+ tridentUnrealizeCursor,
+ tridentSetCursor,
+ tridentMoveCursor,
+};
+
+static void
+tridentQueryBestSize (int class,
+ unsigned short *pwidth, unsigned short *pheight,
+ ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ switch (class)
+ {
+ case CursorShape:
+ if (*pwidth > pCurPriv->width)
+ *pwidth = pCurPriv->width;
+ if (*pheight > pCurPriv->height)
+ *pheight = pCurPriv->height;
+ if (*pwidth > pScreen->width)
+ *pwidth = pScreen->width;
+ if (*pheight > pScreen->height)
+ *pheight = pScreen->height;
+ break;
+ default:
+ fbQueryBestSize (class, pwidth, pheight, pScreen);
+ break;
+ }
+}
+
+Bool
+tridentCursorInit (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ if (!tridents->cursor_base)
+ {
+ pCurPriv->has_cursor = FALSE;
+ return FALSE;
+ }
+
+ pCurPriv->width = TRIDENT_CURSOR_WIDTH;
+ pCurPriv->height= TRIDENT_CURSOR_HEIGHT;
+ pScreen->QueryBestSize = tridentQueryBestSize;
+ miPointerInitialize (pScreen,
+ &tridentPointerSpriteFuncs,
+ &kdPointerScreenFuncs,
+ FALSE);
+ pCurPriv->has_cursor = TRUE;
+ pCurPriv->pCursor = NULL;
+ return TRUE;
+}
+
+void
+tridentCursorEnable (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ if (pCurPriv->has_cursor)
+ {
+ if (pCurPriv->pCursor)
+ {
+ int x, y;
+
+ miPointerPosition (&x, &y);
+ tridentLoadCursor (pScreen, x, y);
+ }
+ else
+ tridentUnloadCursor (pScreen);
+ }
+}
+
+void
+tridentCursorDisable (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ if (pCurPriv->has_cursor)
+ {
+ if (pCurPriv->pCursor)
+ {
+ tridentUnloadCursor (pScreen);
+ }
+ }
+}
+
+void
+tridentCursorFini (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ pCurPriv->pCursor = NULL;
+}
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