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Diffstat (limited to 'hw/kdrive/sis530/siscurs.c')
-rw-r--r--hw/kdrive/sis530/siscurs.c364
1 files changed, 364 insertions, 0 deletions
diff --git a/hw/kdrive/sis530/siscurs.c b/hw/kdrive/sis530/siscurs.c
new file mode 100644
index 000000000..624fdec32
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+++ b/hw/kdrive/sis530/siscurs.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 "sis.h"
+#include "cursorstr.h"
+
+#define SetupCursor(s) KdScreenPriv(s); \
+ sisCardInfo(pScreenPriv); \
+ sisScreenInfo(pScreenPriv); \
+ SisPtr sis = sisc->sis; \
+ SisCursor *pCurPriv = &siss->cursor
+
+static void
+_sisMoveCursor (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);
+
+ PutSrtc (sisc, 0x5, 0x86);
+ PutSrtc (sisc, 0x1c, xoff & 0x3f);
+ PutSrtc (sisc, 0x1f, yoff & 0x3f);
+
+ PutSrtc (sisc, 0x1a, xlow);
+ PutSrtc (sisc, 0x1b, xhigh & 0xf);
+
+ PutSrtc (sisc, 0x1d, ylow);
+ PutSrtc (sisc, 0x1e, yhigh & 0x7);
+}
+
+static void
+sisMoveCursor (ScreenPtr pScreen, int x, int y)
+{
+ SetupCursor (pScreen);
+
+ if (!pCurPriv->has_cursor)
+ return;
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ LockSis(sisc);
+ _sisMoveCursor (pScreen, x, y);
+ UnlockSis(sisc);
+}
+
+static void
+_sisSetCursorColors (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+ CursorPtr pCursor = pCurPriv->pCursor;
+ /* set foreground */
+ PutSrtc (sisc, 0x17, pCursor->foreRed >> 10);
+ PutSrtc (sisc, 0x18, pCursor->foreGreen >> 10);
+ PutSrtc (sisc, 0x19, pCursor->foreBlue >> 10);
+
+ /* set background */
+ PutSrtc (sisc, 0x14, pCursor->backRed >> 10);
+ PutSrtc (sisc, 0x15, pCursor->backGreen >> 10);
+ PutSrtc (sisc, 0x16, pCursor->backBlue >> 10);
+}
+
+static void
+sisLoadCursor (ScreenPtr pScreen, int x, int y)
+{
+ SetupCursor(pScreen);
+ CursorPtr pCursor = pCurPriv->pCursor;
+ CursorBitsPtr bits = pCursor->bits;
+ int w, h;
+ unsigned short *ram, r;
+ unsigned char *msk, *mskLine, *src, *srcLine;
+ unsigned short m, s;
+
+ int i, j;
+ int cursor_address;
+ int src_stride, src_width;
+
+ CARD8 sr6;
+
+ /*
+ * Lock Sis so the cursor doesn't move while we're setting it
+ */
+ LockSis(sisc);
+
+ pCurPriv->pCursor = pCursor;
+ pCurPriv->xhot = pCursor->bits->xhot;
+ pCurPriv->yhot = pCursor->bits->yhot;
+
+ /*
+ * Stick new image into cursor memory
+ */
+ ram = (unsigned short *) siss->cursor_base;
+ mskLine = (unsigned char *) bits->mask;
+ srcLine = (unsigned char *) bits->source;
+
+ h = bits->height;
+ if (h > SIS_CURSOR_HEIGHT)
+ h = SIS_CURSOR_HEIGHT;
+
+ src_stride = BitmapBytePad(bits->width); /* bytes per line */
+ src_width = (bits->width + 7) >> 3;
+
+ for (i = 0; i < SIS_CURSOR_HEIGHT; i++) {
+ msk = mskLine;
+ src = srcLine;
+ mskLine += src_stride;
+ srcLine += src_stride;
+ for (j = 0; j < SIS_CURSOR_WIDTH / 8; j++) {
+
+ unsigned short m, s;
+
+ if (i < h && j < src_width)
+ {
+ m = *msk++;
+ s = *src++ & m;
+ m = ~m;
+ /* mask off right side */
+ if (j == src_width - 1 && (bits->width & 7))
+ {
+ m |= 0xff << (bits->width & 7);
+ }
+ }
+ else
+ {
+ m = 0xff;
+ s = 0x00;
+ }
+
+ /*
+ * The SIS530 HW cursor format is: source(AND) bit,
+ * then a mask(XOR) bit, etc.
+ * byte swapping in sis530 is:
+ * abcd ==> cdab
+ */
+
+#define bit(a,n) (((a) >> (n)) & 0x1)
+
+ r = ((bit(m, 0) << 7) | (bit(s, 0) << 6) |
+ (bit(m, 1) << 5) | (bit(s, 1) << 4) |
+ (bit(m, 2) << 3) | (bit(s, 2) << 2) |
+ (bit(m, 3) << 1) | (bit(s, 3) << 0) |
+ (bit(m, 4) << 15) | (bit(s, 4) << 14) |
+ (bit(m, 5) << 13) | (bit(s, 5) << 12) |
+ (bit(m, 6) << 11) | (bit(s, 6) << 10) |
+ (bit(m, 7) << 9) | (bit(s, 7) << 8));
+
+ *ram++ = r;
+ }
+ }
+
+ /* Set new color */
+ _sisSetCursorColors (pScreen);
+
+ /* Move to new position */
+ _sisMoveCursor (pScreen, x, y);
+
+ /* Enable cursor */
+ sr6 = GetSrtc (sisc, 0x6);
+ sr6 |= 0x40;
+ PutSrtc (sisc, 0x6, sr6);
+
+ UnlockSis(sisc);
+}
+
+static void
+sisUnloadCursor (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+ CARD8 sr6;
+
+ LockSis (sisc);
+
+ /* Disable cursor */
+ sr6 = GetSrtc (sisc, 0x6);
+ sr6 &= ~0x40;
+ PutSrtc (sisc, 0x6, sr6);
+ PutSrtc (sisc, 0x1b, 0x00);
+
+ UnlockSis (sisc);
+}
+
+static Bool
+sisRealizeCursor (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);
+ sisLoadCursor (pScreen, x, y);
+ }
+ }
+ return TRUE;
+}
+
+static Bool
+sisUnrealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
+{
+ return TRUE;
+}
+
+static void
+sisSetCursor (ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
+{
+ SetupCursor(pScreen);
+
+ pCurPriv->pCursor = pCursor;
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ if (pCursor)
+ sisLoadCursor (pScreen, x, y);
+ else
+ sisUnloadCursor (pScreen);
+}
+
+miPointerSpriteFuncRec sisPointerSpriteFuncs = {
+ sisRealizeCursor,
+ sisUnrealizeCursor,
+ sisSetCursor,
+ sisMoveCursor,
+};
+
+static void
+sisQueryBestSize (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
+sisCursorInit (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ if (!siss->cursor_base)
+ {
+ pCurPriv->has_cursor = FALSE;
+ return FALSE;
+ }
+
+ pCurPriv->width = SIS_CURSOR_WIDTH;
+ pCurPriv->height= SIS_CURSOR_HEIGHT;
+ pScreen->QueryBestSize = sisQueryBestSize;
+ miPointerInitialize (pScreen,
+ &sisPointerSpriteFuncs,
+ &kdPointerScreenFuncs,
+ FALSE);
+ pCurPriv->has_cursor = TRUE;
+ pCurPriv->pCursor = NULL;
+ return TRUE;
+}
+
+void
+sisCursorEnable (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ if (pCurPriv->has_cursor)
+ {
+ if (pCurPriv->pCursor)
+ {
+ int x, y;
+
+ miPointerPosition (&x, &y);
+ sisLoadCursor (pScreen, x, y);
+ }
+ else
+ sisUnloadCursor (pScreen);
+ }
+}
+
+void
+sisCursorDisable (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ if (pCurPriv->has_cursor)
+ {
+ if (pCurPriv->pCursor)
+ {
+ sisUnloadCursor (pScreen);
+ }
+ }
+}
+
+void
+sisCursorFini (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ pCurPriv->pCursor = NULL;
+}
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