/***  $Id: fbneomagic.c,v 1.7 2005/04/22 09:25:46 weiym Exp $****  Copyright (C) 2001 ~ 2002 Wei Yongming.**  Copyright (C) 2003 Feynman Software.****  Copyright (C) 2000 convergence integrated media GmbH.****  Written by Denis Oliver Kropp <dok@convergence.de> and**      Andreas Hundt <andi@convergence.de>.*//*** This program is free software; you can redistribute it and/or modify** it under the terms of the GNU General Public License as published by** the Free Software Foundation; either version 2 of the License, or** (at your option) any later version.**** This program is distributed in the hope that it will be useful,** but WITHOUT ANY WARRANTY; without even the implied warranty of** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the** GNU General Public License for more details.**** You should have received a copy of the GNU General Public License** along with this program; if not, write to the Free Software** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*/#include <stdio.h>#include "common.h"#include "newgal.h"#include "blit.h"#include "fbvideo.h"#ifdef FB_ACCEL_NEOMAGIC_NM2070#include "fbneomagic.h"#include "neomagic_mmio.h"typedef volatile struct {  __u32 bltStat;  __u32 bltCntl;  __u32 xpColor;  __u32 fgColor;  __u32 bgColor;  __u32 pitch;  __u32 clipLT;  __u32 clipRB;  __u32 srcBitOffset;  __u32 srcStart;  __u32 reserved0;  __u32 dstStart;  __u32 xyExt;  __u32 reserved1[19];  __u32 pageCntl;  __u32 pageBase;  __u32 postBase;  __u32 postPtr;  __u32 dataPtr;} Neo2200;static Neo2200 *neo2200 = NULL;/* Wait for vertical retrace */static void WaitVBL(_THIS){    while (neo2200->bltStat & 1)        ;}static void WaitIdle(_THIS){    while (neo2200->bltStat & 1)        ;}/* Sets video mem colorkey and accelerated blit function */static int SetHWColorKey(_THIS, GAL_Surface *surface, Uint32 key){    return 0;}static inline void validate_dst (_THIS, GAL_Surface* dst){    int bltMode = 0;    switch (dst->format->BitsPerPixel) {    case 8:        bltMode |= NEO_MODE1_DEPTH8;        break;    case 15:    case 16:        bltMode |= NEO_MODE1_DEPTH16;        break;    default:        break;    }  neo2200->bltStat = bltMode << 16;  neo2200->pitch = (dst->pitch << 16) | (dst->pitch & 0xFFFF);}static int FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color){	char *dst_base;	dst_base = (char *)((char *)dst->pixels - mapped_mem);	/* Execute the fill command */    WaitIdle (this);	/* Set the destination pixel format */    validate_dst (this, dst);    neo2200->fgColor = color;    neo2200->bltCntl = NEO_BC3_FIFO_EN      |                       NEO_BC0_SRC_IS_FG    |                       NEO_BC3_SKIP_MAPPING |  0x0c0000;    neo2200->dstStart = (Uint32) dst_base +                        (rect->y * dst->pitch) +                         (rect->x * dst->format->BytesPerPixel);    neo2200->xyExt    = (rect->h << 16) | (rect->w & 0xffff);    WaitIdle (this);	return(0);}static void HWAccelBlit_helper (GAL_Surface *src, GAL_Rect *srcrect,                       GAL_Surface *dst, GAL_Rect *dstrect){	GAL_VideoDevice *this = current_video;	Uint32 src_base;	Uint32 dst_base;	/* Set the source and destination pixel format */	src_base = (Uint32)((char *)src->pixels - mapped_mem);	dst_base = (Uint32)((char *)dst->pixels - mapped_mem);	/* Perform the blit! */    neo2200->pitch = (dst->pitch << 16) | (src->pitch & 0xFFFF);    neo2200->bltCntl = NEO_BC3_FIFO_EN |                       NEO_BC3_SKIP_MAPPING | 0x0c0000;	if ( (src->flags & GAL_SRCCOLORKEY) == GAL_SRCCOLORKEY ) {        neo2200->bltCntl |= NEO_BC0_SRC_TRANS;        neo2200->xpColor = src->format->colorkey;	}    neo2200->srcStart = (Uint32) src_base +             srcrect->y * src->pitch +             srcrect->x * src->format->BytesPerPixel;    neo2200->dstStart =  (Uint32) dst_base +                 (dstrect->y * dst->pitch) +                 (dstrect->x * dst->format->BytesPerPixel);    neo2200->xyExt = (srcrect->h << 16) | (srcrect->w & 0xffff);    WaitIdle (this);}static void make_rects (GAL_Rect *src, GAL_Rect* dst, const RECT* rc, Uint32 x, Uint32 y){    src->x = rc->left;    src->y = rc->top;    src->w = rc->right - rc->left;    src->h = rc->bottom - rc->top;    dst->x = src->x + x;    dst->y = src->y + y;    dst->w = src->w;    dst->h = src->h;}static int HWAccelBlit (GAL_Surface *src, GAL_Rect *srcrect,                       GAL_Surface *dst, GAL_Rect *dstrect){    RECT rc_src = {srcrect->x, srcrect->y, srcrect->x + srcrect->w, srcrect->y + srcrect->h};    RECT rc_dst = {dstrect->x, dstrect->y, dstrect->x + dstrect->w, dstrect->y + dstrect->h};    RECT rc_inter, rc_sub [4];        if (rc_src.top < rc_dst.top && IntersectRect (&rc_inter, &rc_src, &rc_dst)) {        int i, sub_count, inter_h;        Sint32 off_x = dstrect->x - srcrect->x;        Sint32 off_y = dstrect->y - srcrect->y;        GAL_Rect tmp_src, tmp_dst;        inter_h = rc_inter.bottom - rc_inter.top;        for (i = 0; i < inter_h; i++) {            rc_inter.top = rc_inter.bottom - 1;            make_rects (&tmp_src, &tmp_dst, &rc_inter, off_x, off_y);            HWAccelBlit_helper (src, &tmp_src, dst, &tmp_dst);            rc_inter.bottom --;        }        sub_count = SubtractRect (rc_sub, &rc_src, &rc_dst);        for (i = 0; i < sub_count; i++) {            make_rects (&tmp_src, &tmp_dst, rc_sub + i, off_x, off_y);            HWAccelBlit_helper (src, &tmp_src, dst, &tmp_dst);        }    }    else if (rc_src.top == rc_dst.top && rc_src.left < rc_dst.left) {        int i;        GAL_Rect tmp_src, tmp_dst;        Sint32 off_x = dstrect->x - srcrect->x;        RECT rc = rc_src;        for (i = 0; i < rc_src.right - rc_src.left; i++) {            rc.left = rc.right - 1;            make_rects (&tmp_src, &tmp_dst, &rc, off_x, 0);            HWAccelBlit_helper (src, &tmp_src, dst, &tmp_dst);            rc.right --;        }    }    else        HWAccelBlit_helper (src, srcrect, dst, dstrect);	return(0);}static int CheckHWBlit (_THIS, GAL_Surface *src, GAL_Surface *dst){	int accelerated;	/* Set initial acceleration on */	src->flags |= GAL_HWACCEL;	/* Set the surface attributes */	if ( (src->flags & GAL_SRCALPHA) == GAL_SRCALPHA ) {		if ( ! this->info.blit_hw_A ) {			src->flags &= ~GAL_HWACCEL;		}	}	if ( (src->flags & GAL_SRCCOLORKEY) == GAL_SRCCOLORKEY ) {		if ( ! this->info.blit_hw_CC ) {			src->flags &= ~GAL_HWACCEL;		}	}    if (src->format->BitsPerPixel > 16)        src->flags &= ~GAL_HWACCEL;	/* Check to see if final surface blit is accelerated */	accelerated = !!(src->flags & GAL_HWACCEL);	if ( accelerated ) {		src->map->hw_blit = HWAccelBlit;	}	return(accelerated);}void FB_NeoMagicAccel(_THIS, __u32 card){    neo2200 = (Neo2200*) mapped_io;	/* We have hardware accelerated surface functions */	this->CheckHWBlit = CheckHWBlit;	wait_vbl = WaitVBL;	wait_idle = WaitIdle;	/* The NeoMagic has an accelerated color fill */	this->info.blit_fill = 1;	this->FillHWRect = FillHWRect;	/* The NeoMagic has accelerated normal and colorkey blits */	this->info.blit_hw = 1;    this->info.blit_hw_CC = 1;    this->SetHWColorKey = SetHWColorKey;}#endif /* FB_ACCEL_NEOMAGIC_NM2070 */