xenocara/driver/xf86-video-intel/src/i810_cursor.c

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

Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/i810/i810_cursor.c,v 1.6 2002/09/11 00:29:31 dawes Exp $ */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

/*
 * 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>
 *
 * Add ARGB HW cursor support:
 *   Alan Hourihane <alanh@tungstengraphics.com>
 *
 */

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

#include "xf86fbman.h"

#include "i810.h"

static Bool I810UseHWCursorARGB(ScreenPtr pScreen, CursorPtr pCurs);
static void I810LoadCursorARGB(ScrnInfoPtr pScrn, CursorPtr pCurs);
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;
#ifdef ARGB_CURSOR
   pI810->CursorIsARGB = FALSE;

   if (!pI810->CursorARGBPhysical) {
      infoPtr->UseHWCursorARGB = I810UseHWCursorARGB;
      infoPtr->LoadCursorARGB = I810LoadCursorARGB;
   }
#endif

   return xf86InitCursor(pScreen, infoPtr);
}

#ifdef ARGB_CURSOR
#include "cursorstr.h"

static Bool I810UseHWCursorARGB (ScreenPtr pScreen, CursorPtr pCurs)
{
   ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
   I810Ptr pI810 = I810PTR(pScrn);

   if (!pI810->CursorARGBPhysical)
      return FALSE;

   if (pCurs->bits->height <= 64 && pCurs->bits->width <= 64)
      return TRUE;

   return FALSE;
}

static void I810LoadCursorARGB (ScrnInfoPtr pScrn, CursorPtr pCurs)
{
   I810Ptr pI810 = I810PTR(pScrn);
   uint32_t *pcurs = (uint32_t *) (pI810->FbBase + pI810->CursorStart);
   uint32_t *image = (uint32_t *) pCurs->bits->argb;
   int x, y, w, h;

#ifdef ARGB_CURSOR
   pI810->CursorIsARGB = TRUE;
#endif

   w = pCurs->bits->width;
   h = pCurs->bits->height;

   for (y = 0; y < h; y++)
   {
      for (x = 0; x < w; x++)
         *pcurs++ = *image++;
         for (; x < 64; x++)
            *pcurs++ = 0;
   }

   for (; y < 64; y++)
      for (x = 0; x < 64; x++)
         *pcurs++ = 0;
}
#endif

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);
   uint8_t *pcurs = (uint8_t *) (pI810->FbBase + pI810->CursorStart);
   int x, y;

#ifdef ARGB_CURSOR
   pI810->CursorIsARGB = FALSE;
#endif

   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));

   if (pI810->CursorIsARGB)
      OUTREG(CURSOR_BASEADDR, pI810->CursorARGBPhysical);
   else
      OUTREG(CURSOR_BASEADDR, pI810->CursorPhysical);
}

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

   if (pI810->CursorIsARGB) {
      OUTREG(CURSOR_BASEADDR, pI810->CursorARGBPhysical);
      OUTREG8(CURSOR_CONTROL, CURSOR_ORIGIN_DISPLAY | CURSOR_MODE_64_ARGB_AX);
   } else {
      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);

#ifdef ARGB_CURSOR
   if (pI810->CursorIsARGB)
      return;
#endif

   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);
}