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-rw-r--r--src/i830_cursor.c281
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diff --git a/src/i830_cursor.c b/src/i830_cursor.c
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+
+/**************************************************************************
+
+Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
+Copyright © 2002 David Dawes
+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 the rights to use, copy, modify, merge, publish,
+distribute, sub license, 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 PRECISION INSIGHT AND/OR ITS 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.
+
+**************************************************************************/
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/i810/i830_cursor.c,v 1.6 2002/12/18 15:49:01 dawes Exp $ */
+
+/*
+ * Reformatted with GNU indent (2.2.8), using the following options:
+ *
+ * -bad -bap -c41 -cd0 -ncdb -ci6 -cli0 -cp0 -ncs -d0 -di3 -i3 -ip3 -l78
+ * -lp -npcs -psl -sob -ss -br -ce -sc -hnl
+ *
+ * This provides a good match with the original i810 code and preferred
+ * XFree86 formatting conventions.
+ *
+ * When editing this driver, please follow the existing formatting, and edit
+ * with <TAB> characters expanded at 8-column intervals.
+ */
+
+/*
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ * David Dawes <dawes@tungstengraphics.com>
+ *
+ */
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+#include "compiler.h"
+
+#include "xf86fbman.h"
+
+#include "i830.h"
+
+static void I830LoadCursorImage(ScrnInfoPtr pScrn, unsigned char *src);
+static void I830ShowCursor(ScrnInfoPtr pScrn);
+static void I830HideCursor(ScrnInfoPtr pScrn);
+static void I830SetCursorColors(ScrnInfoPtr pScrn, int bg, int fb);
+static void I830SetCursorPosition(ScrnInfoPtr pScrn, int x, int y);
+static Bool I830UseHWCursor(ScreenPtr pScrn, CursorPtr pCurs);
+
+void
+I830InitHWCursor(ScrnInfoPtr pScrn)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+ CARD32 temp;
+
+ DPRINTF(PFX, "I830InitHWCursor\n");
+
+ /* Initialise the HW cursor registers, leaving the cursor hidden. */
+ if (IS_MOBILE(pI830)) {
+ temp = INREG(CURSOR_A_CONTROL);
+ temp &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE | MCURSOR_MEM_TYPE_LOCAL |
+ MCURSOR_PIPE_SELECT);
+ temp |= CURSOR_MODE_DISABLE;
+ /*
+ * XXX Should enable cursor B when both pipes are enabled.
+ * For now, give pipe A preference.
+ */
+ if (pI830->pipeEnabled[0])
+ temp |= MCURSOR_PIPE_A;
+ else if (pI830->pipeEnabled[1])
+ temp |= MCURSOR_PIPE_B;
+ /* Need to set control, then address. */
+ OUTREG(CURSOR_A_CONTROL, temp);
+ OUTREG(CURSOR_A_BASE, pI830->CursorMem.Physical);
+ } else {
+ temp = INREG(CURSOR_CONTROL);
+ temp &= ~(CURSOR_FORMAT_MASK | CURSOR_GAMMA_ENABLE |
+ CURSOR_ENABLE | CURSOR_STRIDE_MASK);
+ temp |= (CURSOR_FORMAT_3C);
+ /* This initialises the format and leave the cursor disabled. */
+ OUTREG(CURSOR_CONTROL, temp);
+ /* Need to set address and size after disabling. */
+ OUTREG(CURSOR_BASEADDR, pI830->CursorMem.Start);
+ temp = ((I810_CURSOR_X & CURSOR_SIZE_MASK) << CURSOR_SIZE_HSHIFT) |
+ ((I810_CURSOR_Y & CURSOR_SIZE_MASK) << CURSOR_SIZE_VSHIFT);
+ OUTREG(CURSOR_SIZE, temp);
+ }
+}
+
+Bool
+I830CursorInit(ScreenPtr pScreen)
+{
+ ScrnInfoPtr pScrn;
+ I830Ptr pI830;
+ xf86CursorInfoPtr infoPtr;
+
+ DPRINTF(PFX, "I830CursorInit\n");
+ pScrn = xf86Screens[pScreen->myNum];
+ pI830 = I830PTR(pScrn);
+ pI830->CursorInfoRec = infoPtr = xf86CreateCursorInfoRec();
+ if (!infoPtr)
+ return FALSE;
+
+ infoPtr->MaxWidth = 64;
+ infoPtr->MaxHeight = 64;
+ infoPtr->Flags = (HARDWARE_CURSOR_TRUECOLOR_AT_8BPP |
+ HARDWARE_CURSOR_BIT_ORDER_MSBFIRST |
+ HARDWARE_CURSOR_INVERT_MASK |
+ HARDWARE_CURSOR_SWAP_SOURCE_AND_MASK |
+ HARDWARE_CURSOR_AND_SOURCE_WITH_MASK |
+ HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64 | 0);
+
+ infoPtr->SetCursorColors = I830SetCursorColors;
+ infoPtr->SetCursorPosition = I830SetCursorPosition;
+ infoPtr->LoadCursorImage = I830LoadCursorImage;
+ infoPtr->HideCursor = I830HideCursor;
+ infoPtr->ShowCursor = I830ShowCursor;
+ infoPtr->UseHWCursor = I830UseHWCursor;
+
+ if (pI830->CursorNeedsPhysical && !pI830->CursorMem.Physical)
+ return FALSE;
+
+ I830HideCursor(pScrn);
+
+ return xf86InitCursor(pScreen, infoPtr);
+}
+
+static Bool
+I830UseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
+{
+ ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+ I830Ptr pI830 = I830PTR(pScrn);
+
+ DPRINTF(PFX, "I830UseHWCursor\n");
+ if (pI830->CursorNeedsPhysical && !pI830->CursorMem.Physical)
+ return FALSE;
+
+ return TRUE;
+}
+
+static void
+I830LoadCursorImage(ScrnInfoPtr pScrn, unsigned char *src)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+ CARD8 *pcurs = (CARD8 *) (pI830->FbBase + pI830->CursorMem.Start);
+ int x, y;
+
+ DPRINTF(PFX, "I830LoadCursorImage\n");
+ for (y = 0; y < 64; y++) {
+ for (x = 0; x < 64 / 4; x++) {
+ *pcurs++ = *src++;
+ }
+ }
+}
+
+
+static void
+I830SetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+ CARD32 temp = 0;
+ static Bool outsideViewport = FALSE;
+ Bool hide = FALSE, show = FALSE;
+
+ /*
+ * There is a screen display problem when the cursor position is set
+ * wholely outside of the viewport. We trap that here, turning the
+ * cursor off when that happens, and back on when it comes back into
+ * the viewport.
+ */
+ if (x >= pScrn->currentMode->HDisplay ||
+ y >= pScrn->currentMode->VDisplay ||
+ x <= -I810_CURSOR_X || y <= -I810_CURSOR_Y) {
+ hide = TRUE;
+ outsideViewport = TRUE;
+ } else if (outsideViewport) {
+ show = TRUE;
+ outsideViewport = FALSE;
+ }
+
+ if (x < 0) {
+ temp |= (CURSOR_POS_SIGN << CURSOR_X_SHIFT);
+ x = -x;
+ }
+ if (y < 0) {
+ temp |= (CURSOR_POS_SIGN << CURSOR_Y_SHIFT);
+ y = -y;
+ }
+ temp |= ((x & CURSOR_POS_MASK) << CURSOR_X_SHIFT);
+ temp |= ((y & CURSOR_POS_MASK) << CURSOR_Y_SHIFT);
+
+ OUTREG(CURSOR_A_POSITION, temp);
+
+ if (pI830->cursorOn) {
+ if (hide)
+ pI830->CursorInfoRec->HideCursor(pScrn);
+ else if (show)
+ pI830->CursorInfoRec->ShowCursor(pScrn);
+ pI830->cursorOn = TRUE;
+ }
+}
+
+static void
+I830ShowCursor(ScrnInfoPtr pScrn)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+ CARD32 temp;
+
+ DPRINTF(PFX, "I830ShowCursor\n");
+ DPRINTF(PFX,
+ "Value of CursorMem.Physical is %x, "
+ " Value of CursorMem.Start is %x ",
+ pI830->CursorMem.Physical, pI830->CursorMem.Start);
+
+ pI830->cursorOn = TRUE;
+ if (IS_MOBILE(pI830)) {
+ temp = INREG(CURSOR_A_CONTROL);
+ temp &= ~CURSOR_MODE;
+ temp |= CURSOR_MODE_64_4C_AX;
+ /* Need to set mode, then address. */
+ OUTREG(CURSOR_A_CONTROL, temp);
+ OUTREG(CURSOR_A_BASE, pI830->CursorMem.Physical);
+ } else {
+ temp = INREG(CURSOR_CONTROL);
+ temp |= CURSOR_ENABLE;
+ OUTREG(CURSOR_CONTROL, temp);
+ }
+}
+
+static void
+I830HideCursor(ScrnInfoPtr pScrn)
+{
+ CARD32 temp;
+ I830Ptr pI830 = I830PTR(pScrn);
+
+ DPRINTF(PFX, "I830HideCursor\n");
+
+ pI830->cursorOn = FALSE;
+ if (IS_MOBILE(pI830)) {
+ temp = INREG(CURSOR_A_CONTROL);
+ temp &= ~CURSOR_MODE;
+ temp |= CURSOR_MODE_DISABLE;
+ OUTREG(CURSOR_A_CONTROL, temp);
+ /* This is needed to flush the above change. */
+ OUTREG(CURSOR_A_BASE, pI830->CursorMem.Physical);
+ } else {
+ temp = INREG(CURSOR_CONTROL);
+ temp &= ~CURSOR_ENABLE;
+ OUTREG(CURSOR_CONTROL, temp);
+ }
+}
+
+static void
+I830SetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+
+ DPRINTF(PFX, "I830SetCursorColors\n");
+
+ OUTREG(CURSOR_A_PALETTE0, bg & 0x00ffffff);
+ OUTREG(CURSOR_A_PALETTE1, fg & 0x00ffffff);
+ OUTREG(CURSOR_A_PALETTE2, fg & 0x00ffffff);
+ OUTREG(CURSOR_A_PALETTE3, bg & 0x00ffffff);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 11:58:30 +0000