summaryrefslogtreecommitdiff
path: root/src/r128_cursor.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/r128_cursor.c')
-rw-r--r--src/r128_cursor.c263
1 files changed, 263 insertions, 0 deletions
diff --git a/src/r128_cursor.c b/src/r128_cursor.c
new file mode 100644
index 0000000..5a2ac4f
--- /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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 08:47:36 +0000