Initial revision

1 files changed, 486 insertions, 0 deletions

diff --git a/src/radeon_cursor.c b/src/radeon_cursor.c
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+++ b/src/radeon_cursor.c
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+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/radeon_cursor.c,v 1.23 2003/02/24 20:34:55 tsi Exp $ */
+/*
+ * Copyright 2000 ATI Technologies Inc., Markham, Ontario, 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, 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:
+ *   Kevin E. Martin <martin@xfree86.org>
+ *   Rickard E. Faith <faith@valinux.com>
+ *
+ * References:
+ *
+ * !!!! FIXME !!!!
+ *   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 "radeon.h"
+#include "radeon_macros.h"
+#include "radeon_reg.h"
+
+				/* X and server generic header files */
+#include "xf86.h"
+
+/* Mono ARGB cursor colours (premultiplied). */
+static CARD32 mono_cursor_color[] = {
+	0x00000000, /* White, fully transparent. */
+	0x00000000, /* Black, fully transparent. */
+	0xffffffff, /* White, fully opaque. */
+	0xff000000, /* Black, fully opaque. */
+};
+
+#define CURSOR_WIDTH	64
+#define CURSOR_HEIGHT	64
+
+/*
+ * The cursor bits are always 32bpp.  On MSBFirst busses,
+ * configure byte swapping to swap 32 bit units when writing
+ * the cursor image.  Byte swapping must always be returned
+ * to its previous value before returning.
+ */
+#if X_BYTE_ORDER == X_BIG_ENDIAN
+
+#define CURSOR_SWAPPING_DECL_MMIO   unsigned char *RADEONMMIO = info->MMIO;
+#define CURSOR_SWAPPING_DECL	    CARD32  __surface_cntl;
+#define CURSOR_SWAPPING_START() \
+    OUTREG(RADEON_SURFACE_CNTL, \
+	   ((__surface_cntl = INREG(RADEON_SURFACE_CNTL)) | \
+	    RADEON_NONSURF_AP0_SWP_32BPP) & \
+	   ~RADEON_NONSURF_AP0_SWP_16BPP)
+#define CURSOR_SWAPPING_END()	(OUTREG(RADEON_SURFACE_CNTL, __surface_cntl))
+
+#else
+
+#define CURSOR_SWAPPING_DECL_MMIO
+#define CURSOR_SWAPPING_DECL
+#define CURSOR_SWAPPING_START()
+#define CURSOR_SWAPPING_END()
+
+#endif
+
+/* Set cursor foreground and background colors */
+static void RADEONSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
+{
+    RADEONInfoPtr  info       = RADEONPTR(pScrn);
+    CARD32        *pixels     = (CARD32 *)(pointer)(info->FB + info->cursor_start);
+    int            pixel, i;
+    CURSOR_SWAPPING_DECL_MMIO
+    CURSOR_SWAPPING_DECL
+
+#ifdef ARGB_CURSOR
+    /* Don't recolour cursors set with SetCursorARGB. */
+    if (info->cursor_argb)
+       return;
+#endif
+    
+    fg |= 0xff000000;
+    bg |= 0xff000000;
+    
+    /* Don't recolour the image if we don't have to. */
+    if (fg == info->cursor_fg && bg == info->cursor_bg)
+       return;
+
+    CURSOR_SWAPPING_START();
+    
+    /* Note: We assume that the pixels are either fully opaque or fully
+     * transparent, so we won't premultiply them, and we can just
+     * check for non-zero pixel values; those are either fg or bg
+     */
+    for (i = 0; i < CURSOR_WIDTH * CURSOR_HEIGHT; i++, pixels++)
+       if ((pixel = *pixels))
+           *pixels = (pixel == info->cursor_fg) ? fg : bg;
+
+    CURSOR_SWAPPING_END();
+    info->cursor_fg = fg;
+    info->cursor_bg = bg;
+}
+
+
+/* Set cursor position to (x,y) with offset into cursor bitmap at
+ * (xorigin,yorigin)
+ */
+static void RADEONSetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
+{
+    RADEONInfoPtr      info       = RADEONPTR(pScrn);
+    unsigned char     *RADEONMMIO = info->MMIO;
+    xf86CursorInfoPtr  cursor     = info->cursor;
+    int                xorigin    = 0;
+    int                yorigin    = 0;
+    int                total_y    = pScrn->frameY1 - pScrn->frameY0;
+    int                X2         = pScrn->frameX0 + x;
+    int                Y2         = pScrn->frameY0 + y;
+    int		       stride     = 256;
+
+    if (x < 0)                        xorigin = -x+1;
+    if (y < 0)                        yorigin = -y+1;
+    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;
+
+    if (info->Clone) {
+	int X0 = 0;
+	int Y0 = 0;
+
+	if ((info->CurCloneMode->VDisplay == pScrn->currentMode->VDisplay) &&
+	    (info->CurCloneMode->HDisplay == pScrn->currentMode->HDisplay)) {
+	    Y2 = y;
+	    X2 = x;
+	    X0 = pScrn->frameX0;
+	    Y0 = pScrn->frameY0;
+	} else {
+	    if (y < 0)
+		Y2 = pScrn->frameY0;
+
+	    if (x < 0)
+		X2 = pScrn->frameX0;
+
+	    if (Y2 >= info->CurCloneMode->VDisplay + info->CloneFrameY0) {
+		Y0 = Y2 - info->CurCloneMode->VDisplay;
+		Y2 = info->CurCloneMode->VDisplay - 1;
+	    } else if (Y2 < info->CloneFrameY0) {
+		Y0 = Y2;
+		Y2 = 0;
+	    } else {
+		Y2 -= info->CloneFrameY0;
+		Y0 = info->CloneFrameY0;
+	    }
+
+	    if (X2 >= info->CurCloneMode->HDisplay + info->CloneFrameX0) {
+		X0 = X2 - info->CurCloneMode->HDisplay;
+		X2 = info->CurCloneMode->HDisplay - 1;
+	    } else if (X2 < info->CloneFrameX0) {
+		X0 = X2;
+		X2 = 0;
+	    } else {
+		X2 -= info->CloneFrameX0;
+		X0 = info->CloneFrameX0;
+	    }
+
+	    if (info->CurCloneMode->Flags & V_DBLSCAN)
+		Y2 *= 2;
+	}
+
+	if ((X0 >= 0 || Y0 >= 0) &&
+	    ((info->CloneFrameX0 != X0) || (info->CloneFrameY0 != Y0))) {
+	    RADEONDoAdjustFrame(pScrn, X0, Y0, TRUE);
+	    info->CloneFrameX0 = X0;
+	    info->CloneFrameY0 = Y0;
+	}
+    }
+
+    if (!info->IsSecondary) {
+	OUTREG(RADEON_CUR_HORZ_VERT_OFF,  (RADEON_CUR_LOCK
+					   | (xorigin << 16)
+					   | yorigin));
+	OUTREG(RADEON_CUR_HORZ_VERT_POSN, (RADEON_CUR_LOCK
+					   | ((xorigin ? 0 : x) << 16)
+					   | (yorigin ? 0 : y)));
+	OUTREG(RADEON_CUR_OFFSET, info->cursor_start + yorigin * stride);
+    } else {
+	OUTREG(RADEON_CUR2_HORZ_VERT_OFF,  (RADEON_CUR2_LOCK
+					    | (xorigin << 16)
+					    | yorigin));
+	OUTREG(RADEON_CUR2_HORZ_VERT_POSN, (RADEON_CUR2_LOCK
+					    | ((xorigin ? 0 : x) << 16)
+					    | (yorigin ? 0 : y)));
+	OUTREG(RADEON_CUR2_OFFSET,
+	       info->cursor_start + pScrn->fbOffset + yorigin * stride);
+    }
+
+    if (info->Clone) {
+	xorigin = 0;
+	yorigin = 0;
+	if (X2 < 0) xorigin = -X2 + 1;
+	if (Y2 < 0) yorigin = -Y2 + 1;
+	if (xorigin >= cursor->MaxWidth)  xorigin = cursor->MaxWidth - 1;
+	if (yorigin >= cursor->MaxHeight) yorigin = cursor->MaxHeight - 1;
+
+	OUTREG(RADEON_CUR2_HORZ_VERT_OFF,  (RADEON_CUR2_LOCK
+					    | (xorigin << 16)
+					    | yorigin));
+	OUTREG(RADEON_CUR2_HORZ_VERT_POSN, (RADEON_CUR2_LOCK
+					    | ((xorigin ? 0 : X2) << 16)
+					    | (yorigin ? 0 : Y2)));
+	OUTREG(RADEON_CUR2_OFFSET,
+	       info->cursor_start + pScrn->fbOffset + yorigin * stride);
+    }
+}
+
+/* Copy cursor image from `image' to video memory.  RADEONSetCursorPosition
+ * will be called after this, so we can ignore xorigin and yorigin.
+ */
+static void RADEONLoadCursorImage(ScrnInfoPtr pScrn, unsigned char *image)
+{
+    RADEONInfoPtr  info       = RADEONPTR(pScrn);
+    unsigned char *RADEONMMIO = info->MMIO;
+    CARD8         *s          = (CARD8 *)(pointer)image;
+    CARD32        *d          = (CARD32 *)(pointer)(info->FB + info->cursor_start);
+    CARD32         save1      = 0;
+    CARD32         save2      = 0;
+    CARD8	   chunk;
+    CARD32         i, j;
+    CURSOR_SWAPPING_DECL
+
+    if (!info->IsSecondary) {
+	save1 = INREG(RADEON_CRTC_GEN_CNTL) & ~(CARD32) (3 << 20);
+	save1 |= (CARD32) (2 << 20);
+	OUTREG(RADEON_CRTC_GEN_CNTL, save1 & (CARD32)~RADEON_CRTC_CUR_EN);
+    }
+
+    if (info->IsSecondary || info->Clone) {
+	save2 = INREG(RADEON_CRTC2_GEN_CNTL) & ~(CARD32) (3 << 20);
+	save2 |= (CARD32) (2 << 20);
+	OUTREG(RADEON_CRTC2_GEN_CNTL, save2 & (CARD32)~RADEON_CRTC2_CUR_EN);
+    }
+
+#ifdef ARGB_CURSOR
+    info->cursor_argb = FALSE;
+#endif
+
+    /*
+     * Convert the bitmap to ARGB32.
+     *
+     * HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_1 always places
+     * source in the low bit of the pair and mask in the high bit,
+     * and MSBFirst machines set HARDWARE_CURSOR_BIT_ORDER_MSBFIRST
+     * (which actually bit swaps the image) to make the bits LSBFirst
+     */
+    CURSOR_SWAPPING_START();
+#define ARGB_PER_CHUNK	(8 * sizeof (chunk) / 2)
+    for (i = 0; i < CURSOR_WIDTH * CURSOR_HEIGHT / ARGB_PER_CHUNK; i++) {
+        chunk = *s++;
+	for (j = 0; j < ARGB_PER_CHUNK; j++, chunk >>= 2)
+	    *d++ = mono_cursor_color[chunk & 3];
+    }
+    CURSOR_SWAPPING_END();
+    
+    info->cursor_bg = mono_cursor_color[2];
+    info->cursor_fg = mono_cursor_color[3];
+
+    if (!info->IsSecondary)
+	OUTREG(RADEON_CRTC_GEN_CNTL, save1);
+
+    if (info->IsSecondary || info->Clone)
+	OUTREG(RADEON_CRTC2_GEN_CNTL, save2);
+
+}
+
+/* Hide hardware cursor. */
+static void RADEONHideCursor(ScrnInfoPtr pScrn)
+{
+    RADEONInfoPtr  info       = RADEONPTR(pScrn);
+    unsigned char *RADEONMMIO = info->MMIO;
+
+    if (info->IsSecondary || info->Clone)
+	OUTREGP(RADEON_CRTC2_GEN_CNTL, 0, ~RADEON_CRTC2_CUR_EN);
+
+    if (!info->IsSecondary)
+	OUTREGP(RADEON_CRTC_GEN_CNTL, 0, ~RADEON_CRTC_CUR_EN);
+}
+
+/* Show hardware cursor. */
+static void RADEONShowCursor(ScrnInfoPtr pScrn)
+{
+    RADEONInfoPtr  info       = RADEONPTR(pScrn);
+    unsigned char *RADEONMMIO = info->MMIO;
+
+    if (info->IsSecondary || info->Clone)
+	OUTREGP(RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_CUR_EN,
+		~RADEON_CRTC2_CUR_EN);
+
+    if (!info->IsSecondary)
+	OUTREGP(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_CUR_EN,
+		~RADEON_CRTC_CUR_EN);
+}
+
+/* Determine if hardware cursor is in use. */
+static Bool RADEONUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
+{
+    ScrnInfoPtr    pScrn = xf86Screens[pScreen->myNum];
+    RADEONInfoPtr  info  = RADEONPTR(pScrn);
+
+    return info->cursor_start ? TRUE : FALSE;
+}
+
+#ifdef ARGB_CURSOR
+#include "cursorstr.h"
+
+static Bool RADEONUseHWCursorARGB (ScreenPtr pScreen, CursorPtr pCurs)
+{
+    ScrnInfoPtr    pScrn = xf86Screens[pScreen->myNum];
+    RADEONInfoPtr  info  = RADEONPTR(pScrn);
+
+    if (info->cursor_start &&
+	pCurs->bits->height <= CURSOR_HEIGHT && pCurs->bits->width <= CURSOR_WIDTH)
+	return TRUE;
+    return FALSE;
+}
+
+static void RADEONLoadCursorARGB (ScrnInfoPtr pScrn, CursorPtr pCurs)
+{
+    RADEONInfoPtr  info       = RADEONPTR(pScrn);
+    unsigned char *RADEONMMIO = info->MMIO;
+    CARD32        *d          = (CARD32 *)(pointer)(info->FB + info->cursor_start);
+    int            x, y, w, h;
+    CARD32         save1      = 0;
+    CARD32         save2      = 0;
+    CARD32	  *image = pCurs->bits->argb;
+    CARD32	  *i;
+    CURSOR_SWAPPING_DECL
+
+    if (!image)
+	return;	/* XXX can't happen */
+    
+    if (!info->IsSecondary) {
+	save1 = INREG(RADEON_CRTC_GEN_CNTL) & ~(CARD32) (3 << 20);
+	save1 |= (CARD32) (2 << 20);
+	OUTREG(RADEON_CRTC_GEN_CNTL, save1 & (CARD32)~RADEON_CRTC_CUR_EN);
+    }
+
+    if (info->IsSecondary || info->Clone) {
+	save2 = INREG(RADEON_CRTC_GEN_CNTL) & ~(CARD32) (3 << 20);
+	save2 |= (CARD32) (2 << 20);
+	OUTREG(RADEON_CRTC2_GEN_CNTL, save2 & (CARD32)~RADEON_CRTC2_CUR_EN);
+    }
+
+#ifdef ARGB_CURSOR
+    info->cursor_argb = TRUE;
+#endif
+    
+    CURSOR_SWAPPING_START();
+
+    w = pCurs->bits->width;
+    if (w > CURSOR_WIDTH)
+	w = CURSOR_WIDTH;
+    h = pCurs->bits->height;
+    if (h > CURSOR_HEIGHT)
+	h = CURSOR_HEIGHT;
+    for (y = 0; y < h; y++)
+    {
+	i = image;
+	image += pCurs->bits->width;
+	for (x = 0; x < w; x++)
+	    *d++ = *i++;
+	/* pad to the right with transparent */
+	for (; x < CURSOR_WIDTH; x++)
+	    *d++ = 0;
+    }
+    /* pad below with transparent */
+    for (; y < CURSOR_HEIGHT; y++)
+	for (x = 0; x < CURSOR_WIDTH; x++)
+	    *d++ = 0;
+
+    CURSOR_SWAPPING_END ();
+
+    if (!info->IsSecondary)
+	OUTREG(RADEON_CRTC_GEN_CNTL, save1);
+
+    if (info->IsSecondary || info->Clone)
+	OUTREG(RADEON_CRTC2_GEN_CNTL, save2);
+
+}
+
+#endif
+    
+
+/* Initialize hardware cursor support. */
+Bool RADEONCursorInit(ScreenPtr pScreen)
+{
+    ScrnInfoPtr        pScrn   = xf86Screens[pScreen->myNum];
+    RADEONInfoPtr      info    = RADEONPTR(pScrn);
+    xf86CursorInfoPtr  cursor;
+    FBAreaPtr          fbarea;
+    int                width;
+    int		       width_bytes;
+    int                height;
+    int                size_bytes;
+
+    if (!(cursor = info->cursor = xf86CreateCursorInfoRec())) return FALSE;
+
+    cursor->MaxWidth          = CURSOR_WIDTH;
+    cursor->MaxHeight         = CURSOR_HEIGHT;
+    cursor->Flags             = (HARDWARE_CURSOR_TRUECOLOR_AT_8BPP
+				 | HARDWARE_CURSOR_AND_SOURCE_WITH_MASK
+#if X_BYTE_ORDER == X_BIG_ENDIAN
+				 /* this is a lie -- 
+				  * HARDWARE_CURSOR_BIT_ORDER_MSBFIRST
+				  * actually inverts the bit order, so
+				  * this switches to LSBFIRST
+				  */
+				 | HARDWARE_CURSOR_BIT_ORDER_MSBFIRST
+#endif
+				 | HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_1);
+
+    cursor->SetCursorColors   = RADEONSetCursorColors;
+    cursor->SetCursorPosition = RADEONSetCursorPosition;
+    cursor->LoadCursorImage   = RADEONLoadCursorImage;
+    cursor->HideCursor        = RADEONHideCursor;
+    cursor->ShowCursor        = RADEONShowCursor;
+    cursor->UseHWCursor       = RADEONUseHWCursor;
+
+#ifdef ARGB_CURSOR
+    cursor->UseHWCursorARGB   = RADEONUseHWCursorARGB;
+    cursor->LoadCursorARGB    = RADEONLoadCursorARGB;
+#endif
+    size_bytes                = CURSOR_WIDTH * 4 * CURSOR_HEIGHT;
+    width                     = pScrn->displayWidth;
+    width_bytes		      = width * (pScrn->bitsPerPixel / 8);
+    height                    = (size_bytes + width_bytes - 1) / width_bytes;
+    fbarea                    = xf86AllocateOffscreenArea(pScreen,
+							  width,
+							  height,
+							  256,
+							  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    = RADEON_ALIGN((fbarea->box.x1 + 
+					      fbarea->box.y1 * width) *
+					     info->CurrentLayout.pixel_bytes,
+					     256);
+	info->cursor_end      = info->cursor_start + size_bytes;
+    }
+
+    RADEONTRACE(("RADEONCursorInit (0x%08x-0x%08x)\n",
+		 info->cursor_start, info->cursor_end));
+
+    return xf86InitCursor(pScreen, cursor);
+}