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