Initial revision

1 files changed, 263 insertions, 0 deletions

diff --git a/src/r128_cursor.c b/src/r128_cursor.c
new file mode 100644
index 00000000..5a2ac4f0
--- /dev/null
+++ b/src/r128_cursor.c
@@ -0,0 +1,263 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/r128_cursor.c,v 1.6 2003/02/13 20:28:40 tsi Exp $ */
+/*
+ * Copyright 1999, 2000 ATI Technologies Inc., Markham, Ontario,
+ *                      Precision Insight, Inc., Cedar Park, Texas, and
+ *                      VA Linux Systems Inc., Fremont, California.
+ *
+ * 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 on 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 (including the
+ * next paragraph) 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
+ * NON-INFRINGEMENT.  IN NO EVENT SHALL ATI, PRECISION INSIGHT, VA LINUX
+ * SYSTEMS AND/OR THEIR SUPPLIERS 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.
+ */
+
+/*
+ * Authors:
+ *   Rickard E. Faith <faith@valinux.com>
+ *   Kevin E. Martin <martin@valinux.com>
+ *
+ * References:
+ *
+ *   RAGE 128 VR/ RAGE 128 GL Register Reference Manual (Technical
+ *   Reference Manual P/N RRG-G04100-C Rev. 0.04), ATI Technologies: April
+ *   1999.
+ *
+ *   RAGE 128 Software Development Manual (Technical Reference Manual P/N
+ *   SDK-G04000 Rev. 0.01), ATI Technologies: June 1999.
+ *
+ */
+
+				/* Driver data structures */
+#include "r128.h"
+#include "r128_reg.h"
+
+				/* X and server generic header files */
+#include "xf86.h"
+
+#if X_BYTE_ORDER == X_BIG_ENDIAN
+#define P_SWAP32( a , b )                \
+       ((char *)a)[0] = ((char *)b)[3];  \
+       ((char *)a)[1] = ((char *)b)[2];  \
+       ((char *)a)[2] = ((char *)b)[1];  \
+       ((char *)a)[3] = ((char *)b)[0]
+
+#define P_SWAP16( a , b )                \
+       ((char *)a)[0] = ((char *)b)[1];  \
+       ((char *)a)[1] = ((char *)b)[0];  \
+       ((char *)a)[2] = ((char *)b)[3];  \
+       ((char *)a)[3] = ((char *)b)[2]
+#endif
+
+
+/* Set cursor foreground and background colors. */
+static void R128SetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
+{
+    R128InfoPtr   info      = R128PTR(pScrn);
+    unsigned char *R128MMIO = info->MMIO;
+
+    OUTREG(R128_CUR_CLR0, bg);
+    OUTREG(R128_CUR_CLR1, fg);
+}
+
+/* Set cursor position to (x,y) with offset into cursor bitmap at
+   (xorigin,yorigin). */
+static void R128SetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
+{
+    R128InfoPtr           info      = R128PTR(pScrn);
+    unsigned char         *R128MMIO = info->MMIO;
+    xf86CursorInfoPtr     cursor    = info->cursor;
+    int                   xorigin   = 0;
+    int                   yorigin   = 0;
+    int                   total_y   = pScrn->frameY1 - pScrn->frameY0;
+
+    if (x < 0)                        xorigin = -x;
+    if (y < 0)                        yorigin = -y;
+    if (y > total_y)                  y       = total_y;
+    if (info->Flags & V_DBLSCAN)      y       *= 2;
+    if (xorigin >= cursor->MaxWidth)  xorigin = cursor->MaxWidth - 1;
+    if (yorigin >= cursor->MaxHeight) yorigin = cursor->MaxHeight - 1;
+
+    OUTREG(R128_CUR_HORZ_VERT_OFF,  R128_CUR_LOCK | (xorigin << 16) | yorigin);
+    OUTREG(R128_CUR_HORZ_VERT_POSN, (R128_CUR_LOCK
+				     | ((xorigin ? 0 : x) << 16)
+				     | (yorigin ? 0 : y)));
+    OUTREG(R128_CUR_OFFSET,         info->cursor_start + yorigin * 16);
+}
+
+/* Copy cursor image from `image' to video memory.  R128SetCursorPosition
+   will be called after this, so we can ignore xorigin and yorigin. */
+static void R128LoadCursorImage(ScrnInfoPtr pScrn, unsigned char *image)
+{
+    R128InfoPtr   info      = R128PTR(pScrn);
+    unsigned char *R128MMIO = info->MMIO;
+    CARD32        *s        = (pointer)image;
+    CARD32        *d        = (pointer)(info->FB + info->cursor_start);
+    int           y;
+    CARD32        save;
+
+    save = INREG(R128_CRTC_GEN_CNTL);
+    OUTREG(R128_CRTC_GEN_CNTL, save & (CARD32)~R128_CRTC_CUR_EN);
+
+#if X_BYTE_ORDER == X_BIG_ENDIAN
+    switch(info->CurrentLayout.pixel_bytes) {
+    case 4:
+    case 3:
+	for (y = 0; y < 64; y++) {
+	    P_SWAP32(d,s);
+	    d++; s++;
+	    P_SWAP32(d,s);
+	    d++; s++;
+	    P_SWAP32(d,s);
+	    d++; s++;
+	    P_SWAP32(d,s);
+	    d++; s++;
+	}
+	break;
+    case 2:
+	for (y = 0; y < 64; y++) {
+	    P_SWAP16(d,s);
+	    d++; s++;
+	    P_SWAP16(d,s);
+	    d++; s++;
+	    P_SWAP16(d,s);
+	    d++; s++;
+	    P_SWAP16(d,s);
+	    d++; s++;
+	}
+	break;
+    default:
+	for (y = 0; y < 64; y++) {
+	    *d++ = *s++;
+	    *d++ = *s++;
+	    *d++ = *s++;
+	    *d++ = *s++;
+	}
+    }
+#else
+    for (y = 0; y < 64; y++) {
+	*d++ = *s++;
+	*d++ = *s++;
+	*d++ = *s++;
+	*d++ = *s++;
+    }
+#endif
+
+    /* Set the area after the cursor to be all transparent so that we
+       won't display corrupted cursors on the screen */
+    for (y = 0; y < 64; y++) {
+	*d++ = 0xffffffff; /* The AND bits */
+	*d++ = 0xffffffff;
+	*d++ = 0x00000000; /* The XOR bits */
+	*d++ = 0x00000000;
+    }
+
+
+    OUTREG(R128_CRTC_GEN_CNTL, save);
+}
+
+/* Hide hardware cursor. */
+static void R128HideCursor(ScrnInfoPtr pScrn)
+{
+    R128InfoPtr   info      = R128PTR(pScrn);
+    unsigned char *R128MMIO = info->MMIO;
+
+    OUTREGP(R128_CRTC_GEN_CNTL, 0, ~R128_CRTC_CUR_EN);
+}
+
+/* Show hardware cursor. */
+static void R128ShowCursor(ScrnInfoPtr pScrn)
+{
+    R128InfoPtr   info      = R128PTR(pScrn);
+    unsigned char *R128MMIO = info->MMIO;
+
+    OUTREGP(R128_CRTC_GEN_CNTL, R128_CRTC_CUR_EN, ~R128_CRTC_CUR_EN);
+}
+
+/* Determine if hardware cursor is in use. */
+static Bool R128UseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
+{
+    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+    R128InfoPtr info  = R128PTR(pScrn);
+
+    return info->cursor_start ? TRUE : FALSE;
+}
+
+/* Initialize hardware cursor support. */
+Bool R128CursorInit(ScreenPtr pScreen)
+{
+    ScrnInfoPtr           pScrn   = xf86Screens[pScreen->myNum];
+    R128InfoPtr           info    = R128PTR(pScrn);
+    xf86CursorInfoPtr     cursor;
+    FBAreaPtr             fbarea;
+    int                   width;
+    int                   height;
+    int                   size;
+
+
+    if (!(cursor = info->cursor = xf86CreateCursorInfoRec())) return FALSE;
+
+    cursor->MaxWidth          = 64;
+    cursor->MaxHeight         = 64;
+    cursor->Flags             = (HARDWARE_CURSOR_TRUECOLOR_AT_8BPP
+				 | HARDWARE_CURSOR_SHOW_TRANSPARENT
+				 | HARDWARE_CURSOR_UPDATE_UNHIDDEN
+#if X_BYTE_ORDER == X_LITTLE_ENDIAN
+				 | HARDWARE_CURSOR_BIT_ORDER_MSBFIRST
+#endif
+				 | HARDWARE_CURSOR_INVERT_MASK
+				 | HARDWARE_CURSOR_AND_SOURCE_WITH_MASK
+				 | HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64
+				 | HARDWARE_CURSOR_SWAP_SOURCE_AND_MASK);
+
+    cursor->SetCursorColors   = R128SetCursorColors;
+    cursor->SetCursorPosition = R128SetCursorPosition;
+    cursor->LoadCursorImage   = R128LoadCursorImage;
+    cursor->HideCursor        = R128HideCursor;
+    cursor->ShowCursor        = R128ShowCursor;
+    cursor->UseHWCursor       = R128UseHWCursor;
+
+    size                      = (cursor->MaxWidth/4) * cursor->MaxHeight;
+    width                     = pScrn->displayWidth;
+    height                    = (size*2 + 1023) / pScrn->displayWidth;
+    fbarea                    = xf86AllocateOffscreenArea(pScreen,
+							  width,
+							  height,
+							  16,
+							  NULL,
+							  NULL,
+							  NULL);
+
+    if (!fbarea) {
+	info->cursor_start    = 0;
+	xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
+		   "Hardware cursor disabled"
+		   " due to insufficient offscreen memory\n");
+    } else {
+	info->cursor_start    = R128_ALIGN((fbarea->box.x1
+					    + width * fbarea->box.y1)
+					   * info->CurrentLayout.pixel_bytes, 16);
+	info->cursor_end      = info->cursor_start + size;
+    }
+
+    R128TRACE(("R128CursorInit (0x%08x-0x%08x)\n",
+	       info->cursor_start, info->cursor_end));
+
+    return xf86InitCursor(pScreen, cursor);
+}