/*
* Copyright �2004 Ralph Thomas
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Ralph Thomas not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Ralph Thomas makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* RALPH THOMAS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL RALPH THOMAS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
** VIA CLE266 driver
** Copyright 2004 (C) Ralph Thomas <[email protected]>
**
** http://www.viatech.com.tw/
**
** This code is for accelerated drawing of solids and accelerated
** copies. Note that there is currently no software FIFO implemented,
** and no documentation on any hardware FIFO.
*/
#include "via.h"
#include "viadraw.h"
#include "via_regs.h"
#include <sched.h>
#include "kdrive.h"
#include "kaa.h"
/*
** A global to contain card information between calls into this file.
** XXX: This is totally brain-damaged. Why don't I get the information
** I want in viaSolid/viaCopy/viaDoneXXX?
*/
static ViaCardInfo* card;
/*
** Translation table from GC raster operation values into ROP3 values
** that the VIA chip understands.
**
** viaPatternRop is used by viaPrepareSolid.
** viaCopyRop is used by viaPrepareCopy.
*/
CARD8 viaPatternRop[16] = {
/* GXclear */ 0x00, /* ROP_0 0 */
/* GXand */ 0xA0, /* ROP_DPa src AND dst */
/* GXandReverse */ 0x50, /* ROP_PDna src AND NOT dst */
/* GXcopy */ 0xF0, /* ROP_P src */
/* GXandInverted*/ 0x0A, /* ROP_DPna NOT src AND dst */
/* GXnoop */ 0xAA, /* ROP_D dst */
/* GXxor */ 0x5A, /* ROP_DPx src XOR dst */
/* GXor */ 0xFA, /* ROP_DPo src OR dst */
/* GXnor */ 0x05, /* ROP_DPon NOT src AND NOT dst */
/* GXequiv */ 0xA5, /* ROP_PDxn NOT src XOR dst */
/* GXinvert */ 0x55, /* ROP_Dn NOT dst */
/* GXorReverse */ 0xF5, /* ROP_PDno src OR NOT dst */
/* GXcopyInverted*/ 0x0F, /* ROP_Pn NOT src */
/* GXorInverted */ 0xAF, /* ROP_DPno NOT src OR dst */
/* GXnand */ 0x5F, /* ROP_DPan NOT src OR NOT dst */
/* GXset */ 0xFF, /* ROP_1 1 */
};
CARD8 viaCopyRop[16] = {
/* GXclear */ 0x00, /* ROP_0 0 */
/* GXand */ 0x88, /* ROP_DSa src AND dst */
/* GXandReverse */ 0x44, /* ROP_SDna src AND NOT dst */
/* GXcopy */ 0xCC, /* ROP_S src */
/* GXandInverted*/ 0x22, /* ROP_DSna NOT src AND dst */
/* GXnoop */ 0xAA, /* ROP_D dst */
/* GXxor */ 0x66, /* ROP_DSx src XOR dst */
/* GXor */ 0xEE, /* ROP_DSo src OR dst */
/* GXnor */ 0x11, /* ROP_DSon NOT src AND NOT dst */
/* GXequiv */ 0x99, /* ROP_DSxn NOT src XOR dst */
/* GXinvert */ 0x55, /* ROP_Dn NOT dst */
/* GXorReverse */ 0xDD, /* ROP_SDno src OR NOT dst */
/* GXcopyInverted*/ 0x33, /* ROP_Sn NOT src */
/* GXorInverted */ 0xBB, /* ROP_DSno NOT src OR dst */
/* GXnand */ 0x77, /* ROP_DSan NOT src OR NOT dst */
/* GXset */ 0xFF, /* ROP_1 1 */
};
/*
** void viaWaitIdle( ViaCardInfo* viac )
**
** Description:
** Block up the CPU while waiting for the last command sent to
** the chip to complete. As an experiment I'm going to try to
** yield my process to others instead of just tight looping.
**
** Arguments:
** viac VIA-driver specific chip information
**
** Return:
** None.
*/
void
viaWaitIdle( ViaCardInfo* viac ) {
while( INREG32( VIA_REG_STATUS ) & VIA_BUSY )
sched_yield();
}
/*
** void viaDrawSync( ScreenPtr pScreen, int marker )
**
** Description:
** Block until the graphics chip has finished all outstanding drawing
** operations and the framebuffer contents is static.
**
** Arguments:
** pScreen Pointer to screen strucutre for the screen we're
** waiting for drawing to end on.
**
** Return:
** None.
*/
static void
viaWaitMarker( ScreenPtr pScreen, int marker ) {
KdScreenPriv( pScreen );
ViaCardInfo* viac = pScreenPriv->card->driver;
viaWaitIdle( viac );
}
/*
** Bool viaPrepareSolid( PixmapPtr pPixmap, int alu, Pixel planemask, Pixel fg )
**
** Description:
** Decide if the specified solid fill operation can be accelerated or not,
** and if the fill can be accelerated, prepare the hardware for doing it.
**
** Arguments:
** pPixmap Pixmap to draw solid into.
** alu Raster operation to draw using, these are the same
** values which get set by XSetFunction(3X). See the
** Xlib PM p. 140 for a list of raster operations as
** well as descriptions.
** planemask This is the GC plane mask. We only copy bits which
** match the plane mask.
** fg The foreground pixel of the GC, the pixel to draw in.
**
** Return:
** TRUE This operation can be accelerated, call viaSolid to actually
** have it drawn.
** FALSE This operation cannot be accelerated, fall back to software.
**
** See Also:
** viaSolid - the function which actually draws the solid.
*/
static Bool
viaPrepareSolid( PixmapPtr pPixmap, int alu, Pixel planeMask, Pixel fg ) {
ScreenPtr pScreen = pPixmap->drawable.pScreen;
KdScreenPriv( pScreen );
ViaCardInfo* viac = pScreenPriv->card->driver;
/*
** We don't accelerate when the plane mask is not everything.
*/
if( ~planeMask & FbFullMask( pPixmap->drawable.depth ) ) return FALSE;
/*
** Compose the command, then store the composed command and color
** in the viac structure so that when viaSolid gets called we can
** write them out.
*/
viac->savedCommand = VIA_GEC_BLT | VIA_GEC_FIXCOLOR_PAT |
(viaPatternRop[alu] << 24);
viac->savedFgColor = fg;
/*
** Store pointer to chip information, due to brain-damaged KAA.
*/
card = viac;
return TRUE;
}
/*
** void viaSolid( int x1, int y1, int x2, int y2 )
**
** Description:
** Perform a solid fill, using the data that was stored by viaPrepareSolid.
**
** Arguments:
** x1 x-coordinate of fill origin
** y1 y-coordinate of fill origin
** x2 x-coordinate of fill end point
** y2 y-coordinate of fill end point
**
** Return:
** None.
**
** See Also:
** viaPrepareSolid - the function that composes the GE command and saves
** the color for us.
*/
static void
viaSolid( int x1, int y1, int x2, int y2 ) {
ViaCardInfo* viac = card;
int w = x2 - x1; int h = y2 - y1;
if( !viac ) return;
if( !w || !h ) return;
/*
** Wait for the card to finish the current draw.
*/
viaWaitIdle( viac );
/*
** Do the draw.
*/
OUTREG32( VIA_REG_DSTPOS, ((y1 << 16) | x1) );
OUTREG32( VIA_REG_DIMENSION, (((h - 1) << 16) | (w - 1)) );
OUTREG32( VIA_REG_FGCOLOR, viac->savedFgColor );
OUTREG32( VIA_REG_GECMD, viac->savedCommand );
}
/*
** void viaDoneSolid
**
** Description:
** Finish up drawing of the solid.
**
** Arguments:
** None.
**
** Return:
** None.
*/
static void
viaDoneSolid(void) {
}
/*
** Bool viaPrepareCopy( PixmapPtr pSrcPixmap, PixmapPtr pDestPixmap, int dx,
** int dy, int alu, Pixel planeMask )
**
** Description:
** Set up the VIA chip for a BitBlt.
**
** Arguments:
** pSrcPixmap the source pixmap to copy from
** pDestPixmap the destination pixmap to copy to
** dx direction of copy in x
** dy direction of copy in y
** alu Raster operation to draw using, these are the same
** values which get set by XSetFunction(3X). See the
** Xlib PM p. 140 for a list of raster operations as
** well as descriptions.
** planeMask This is the GC plane mask. We only copy bits which
** match the plane mask.
**
** Return:
** TRUE the requested copy operation can be accelerated using hardware,
** call viaCopy next.
** FALSE the requested copy operation cannot be accelerated using
** hardware - fallback to software.
**
** See Also:
** viaCopy - the function which does the actual copy.
*/
static Bool
viaPrepareCopy( PixmapPtr pSrcPixmap, PixmapPtr pDestPixmap, int dx, int dy,
int alu, Pixel planeMask ) {
ScreenPtr pScreen = pDestPixmap->drawable.pScreen;
KdScreenPriv( pScreen );
ViaCardInfo* viac = pScreenPriv->card->driver;
/*
** Don't accelerate when the plane mask is set.
*/
if( ~planeMask & FbFullMask( pDestPixmap->drawable.depth ) ) return FALSE;
viac->savedCommand = VIA_GEC_BLT | (viaCopyRop[alu] << 24);
if( dx < 0 ) viac->savedCommand |= VIA_GEC_DECX;
if( dy < 0 ) viac->savedCommand |= VIA_GEC_DECY;
/*
** Store pointer to chip structure, due to brain-damaged KAA.
*/
card = viac;
return TRUE;
}
/*
** void viaCopy( int srcX, int srcY, int dstX, int dstY, int w, int h )
**
** Description:
** Perform a BitBlt from one screen area to another.
**
** Arguments:
** srcX source x-coordinate
** srcY source y-coordinate
** dstX destination x-coordinate
** dstY destination y-coordinate
** w width of area to copy (pixels)
** h height of area to copy (pixels)
**
** Return:
** None.
**
** See Also:
** viaPrepareCopy - the function which sets up for the copy.
*/
static void
viaCopy( int srcX, int srcY, int dstX, int dstY, int w, int h ) {
ViaCardInfo* viac = card;
if( !viac ) return;
if( !w | !h ) return;
/*
** XXX: Check these two "if"s out.
*/
if( viac->savedCommand & VIA_GEC_DECX ) {
srcX += ( w - 1 );
dstX += ( w - 1 );
}
if( viac->savedCommand & VIA_GEC_DECY ) {
srcY += ( h - 1 );
dstY += ( h - 1 );
}
OUTREG32( VIA_REG_SRCPOS, ((srcY << 16) | srcX) );
OUTREG32( VIA_REG_DSTPOS, ((dstY << 16) | dstX) );
OUTREG32( VIA_REG_DIMENSION, (((h - 1) << 16) | (w - 1)) );
OUTREG32( VIA_REG_GECMD, viac->savedCommand );
}
/*
** void viaDoneCopy()
**
** Description:
** Finish up the copy.
**
** Arguments:
** None.
**
** Return:
** None.
*/
static void
viaDoneCopy(void) {
}
/*
** Bool viaDrawInit( ScreenPtr pScreen )
**
** Description:
** Initialize the 2D acceleration hardware and register the KAA
** acceleration layer with the VIA acceleration functions (above).
**
** Arguments:
** pScreen Pointer to screen structure for the screen we're
** enabling acceleration on.
**
** Return:
** TRUE initialization and setup of KAA acceleration was successful.
** FALSE initialization and setup of KAA acceleration failed.
*/
Bool
viaDrawInit( ScreenPtr pScreen ) {
KdScreenPriv( pScreen );
ViaCardInfo* viac = pScreenPriv->card->driver;
ViaScreenInfo* vias = pScreenPriv->card->driver;
CARD32 geMode = 0;
if( !viac ) return FALSE;
DebugF( "viac->mapBase = 0x%x\n", viac->mapBase );
/*
** We reset the 2D engine to a known state by setting all of it's
** registers to zero.
*/
OUTREG32( VIA_REG_GEMODE, 0x0 );
OUTREG32( VIA_REG_SRCPOS, 0x0 );
OUTREG32( VIA_REG_DSTPOS, 0x0 );
OUTREG32( VIA_REG_DIMENSION, 0x0 );
OUTREG32( VIA_REG_PATADDR, 0x0 );
OUTREG32( VIA_REG_FGCOLOR, 0x0 );
OUTREG32( VIA_REG_BGCOLOR, 0x0 );
OUTREG32( VIA_REG_CLIPTL, 0x0 );
OUTREG32( VIA_REG_CLIPBR, 0x0 );
OUTREG32( VIA_REG_OFFSET, 0x0 );
OUTREG32( VIA_REG_KEYCONTROL, 0x0 );
OUTREG32( VIA_REG_SRCBASE, 0x0 );
OUTREG32( VIA_REG_DSTBASE, 0x0 );
OUTREG32( VIA_REG_PITCH, 0x0 );
OUTREG32( VIA_REG_MONOPAT0, 0x0 );
OUTREG32( VIA_REG_MONOPAT1, 0x0 );
/*
** Set the GE mode up.
** XXX: What happens in 24bpp mode?
*/
switch( pScreenPriv->screen->fb[0].bitsPerPixel ) {
case 16:
geMode = VIA_GEM_16bpp;
break;
case 32:
geMode = VIA_GEM_32bpp;
break;
default:
geMode = VIA_GEM_8bpp;
break;
}
OUTREG32( VIA_REG_GEMODE, geMode );
/*
** Set the source and destination base addresses, and set pitch.
*/
OUTREG32( VIA_REG_SRCBASE, 0x0 );
OUTREG32( VIA_REG_DSTBASE, 0x0 );
OUTREG32( VIA_REG_PITCH, VIA_PITCH_ENABLE |
((pScreen->width * pScreenPriv->screen->fb[0].bitsPerPixel >> 3) >> 3) |
(((pScreen->width * pScreenPriv->screen->fb[0].bitsPerPixel >> 3) >> 3) << 16));
DebugF( "Initialized 2D engine!\n" );
memset(&vias->kaa, 0, sizeof(KaaScreenInfoRec));
vias->kaa.waitMarker = viaWaitMarker;
vias->kaa.PrepareSolid = viaPrepareSolid;
vias->kaa.Solid = viaSolid;
vias->kaa.DoneSolid = viaDoneSolid;
vias->kaa.PrepareCopy = viaPrepareCopy;
vias->kaa.Copy = viaCopy;
vias->kaa.DoneCopy = viaDoneCopy;
return kaaDrawInit( pScreen, &vias->kaa );
}
/*
** void viaDrawEnable( ScreenPtr pScreen )
**
** Description:
** Enable accelerated drawing on the specified screen.
**
** Arguments:
** pScreen Pointer to screen structure for the screen we're
** enabling acceleration on.
**
** Return:
** None.
*/
void
viaDrawEnable( ScreenPtr pScreen ) {
kaaMarkSync( pScreen );
}
/*
** void viaDrawDisable( ScreenPtr pScreen )
**
** Description:
** Disable accelerated drawing to the specified screen.
**
** Arguments:
** pScreen Pointer to screen structure for the screen we're
** disabling acceleration on.
**
** Return:
** None
*/
void
viaDrawDisable( ScreenPtr pScreen ) {
}
/*
** void viaDrawFini( ScreenPtr pScreen )
**
** Description:
** Shutdown accelerated drawing and free associated strucures and
** resources.
**
** Arguments:
** pScreen Pointer to screen structure for the screen we're
** disabling acceleration on.
**
** Return:
** None.
*/
void
viaDrawFini( ScreenPtr pScreen ) {
}
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