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Diffstat (limited to 'xorg-server/hw/kdrive/via/viadraw.c')
| -rw-r--r-- | xorg-server/hw/kdrive/via/viadraw.c | 499 |
1 files changed, 499 insertions, 0 deletions
diff --git a/xorg-server/hw/kdrive/via/viadraw.c b/xorg-server/hw/kdrive/via/viadraw.c new file mode 100644 index 000000000..a6544ee36 --- /dev/null +++ b/xorg-server/hw/kdrive/via/viadraw.c @@ -0,0 +1,499 @@ +/* + * 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 <ralpht@gmail.com> +** +** 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 ) { +} |