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-rw-r--r--src/radeon_cursor.c486
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diff --git a/src/radeon_cursor.c 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);
+}
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