i810_cursor.c   [plain text]

/**************************************************************************

Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
All Rights Reserved.

Permission is hereby granted, free of charge, to any person obtaining a
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"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
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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.

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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
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**************************************************************************/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/i810/i810_cursor.c,v 1.7 2002/10/30 12:52:17 alanh 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>
 *
 */

#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86_ansic.h"
#include "compiler.h"

#include "xf86fbman.h"

#include "i810.h"

static void I810LoadCursorImage(ScrnInfoPtr pScrn, unsigned char *src);
static void I810ShowCursor(ScrnInfoPtr pScrn);
static void I810HideCursor(ScrnInfoPtr pScrn);
static void I810SetCursorColors(ScrnInfoPtr pScrn, int bg, int fb);
static void I810SetCursorPosition(ScrnInfoPtr pScrn, int x, int y);
static Bool I810UseHWCursor(ScreenPtr pScrn, CursorPtr pCurs);

Bool
I810CursorInit(ScreenPtr pScreen)
{
   ScrnInfoPtr pScrn;
   I810Ptr pI810;
   xf86CursorInfoPtr infoPtr;

   pScrn = xf86Screens[pScreen->myNum];
   pI810 = I810PTR(pScrn);
   pI810->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 = I810SetCursorColors;
   infoPtr->SetCursorPosition = I810SetCursorPosition;
   infoPtr->LoadCursorImage = I810LoadCursorImage;
   infoPtr->HideCursor = I810HideCursor;
   infoPtr->ShowCursor = I810ShowCursor;
   infoPtr->UseHWCursor = I810UseHWCursor;

   return xf86InitCursor(pScreen, infoPtr);
}

static Bool
I810UseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
{
   ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
   I810Ptr pI810 = I810PTR(pScrn);

   if (!pI810->CursorPhysical)
      return FALSE;
   else
      return TRUE;
}

static void
I810LoadCursorImage(ScrnInfoPtr pScrn, unsigned char *src)
{
   I810Ptr pI810 = I810PTR(pScrn);
   CARD8 *pcurs = (CARD8 *) (pI810->FbBase + pI810->CursorStart);
   int x, y;

   for (y = 0; y < 64; y++) {
      for (x = 0; x < 64 / 4; x++) {
	 *pcurs++ = *src++;
      }
   }
}

static void
I810SetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
{
   I810Ptr pI810 = I810PTR(pScrn);
   int flag;

   x += pI810->CursorOffset;

   if (x >= 0)
      flag = CURSOR_X_POS;
   else {
      flag = CURSOR_X_NEG;
      x = -x;
   }

   OUTREG8(CURSOR_X_LO, x & 0xFF);
   OUTREG8(CURSOR_X_HI, (((x >> 8) & 0x07) | flag));

   if (y >= 0)
      flag = CURSOR_Y_POS;
   else {
      flag = CURSOR_Y_NEG;
      y = -y;
   }
   OUTREG8(CURSOR_Y_LO, y & 0xFF);
   OUTREG8(CURSOR_Y_HI, (((y >> 8) & 0x07) | flag));

   OUTREG(CURSOR_BASEADDR, pI810->CursorPhysical);
}

static void
I810ShowCursor(ScrnInfoPtr pScrn)
{
   I810Ptr pI810 = I810PTR(pScrn);
   unsigned char tmp;

   OUTREG(CURSOR_BASEADDR, pI810->CursorPhysical);
   OUTREG8(CURSOR_CONTROL, CURSOR_ORIGIN_DISPLAY | CURSOR_MODE_64_3C);

   tmp = INREG8(PIXPIPE_CONFIG_0);
   tmp |= HW_CURSOR_ENABLE;
   OUTREG8(PIXPIPE_CONFIG_0, tmp);
}

static void
I810HideCursor(ScrnInfoPtr pScrn)
{
   unsigned char tmp;
   I810Ptr pI810 = I810PTR(pScrn);

   tmp = INREG8(PIXPIPE_CONFIG_0);
   tmp &= ~HW_CURSOR_ENABLE;
   OUTREG8(PIXPIPE_CONFIG_0, tmp);
}

static void
I810SetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
{
   int tmp;
   I810Ptr pI810 = I810PTR(pScrn);

   tmp = INREG8(PIXPIPE_CONFIG_0);
   tmp |= EXTENDED_PALETTE;
   OUTREG8(PIXPIPE_CONFIG_0, tmp);

   pI810->writeStandard(pI810, DACMASK, 0xFF);
   pI810->writeStandard(pI810, DACWX, 0x04);

   pI810->writeStandard(pI810, DACDATA, (bg & 0x00FF0000) >> 16);
   pI810->writeStandard(pI810, DACDATA, (bg & 0x0000FF00) >> 8);
   pI810->writeStandard(pI810, DACDATA, (bg & 0x000000FF));

   pI810->writeStandard(pI810, DACDATA, (fg & 0x00FF0000) >> 16);
   pI810->writeStandard(pI810, DACDATA, (fg & 0x0000FF00) >> 8);
   pI810->writeStandard(pI810, DACDATA, (fg & 0x000000FF));

   tmp = INREG8(PIXPIPE_CONFIG_0);
   tmp &= ~EXTENDED_PALETTE;
   OUTREG8(PIXPIPE_CONFIG_0, tmp);
}