/* * SiS 300/540/630[S]/730[S], * SiS 315[E|PRO]/550/[M]650/651/[M]661[F|M]X/740/[M]741[GX]/330/[M]760[GX], * XGI V3XT/V5/V8, Z7 * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3 * * 2D acceleration part * * 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 named License, * or 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 * * Based on the XFree86/X.org driver which is *     Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria * * Author: Thomas Winischhofer <thomas@winischhofer.net> *			(see http://www.winischhofer.net/ *			for more information and updates) */#include <linux/version.h>#include <linux/module.h>#include <linux/kernel.h>#include <linux/fb.h>#include <linux/ioport.h>#include <linux/types.h>#include <asm/io.h>#include "sis.h"#include "sis_accel.h"static const u8 sisALUConv[] ={    0x00,       /* dest = 0;            0,      GXclear,        0 */    0x88,       /* dest &= src;         DSa,    GXand,          0x1 */    0x44,       /* dest = src & ~dest;  SDna,   GXandReverse,   0x2 */    0xCC,       /* dest = src;          S,      GXcopy,         0x3 */    0x22,       /* dest &= ~src;        DSna,   GXandInverted,  0x4 */    0xAA,       /* dest = dest;         D,      GXnoop,         0x5 */    0x66,       /* dest = ^src;         DSx,    GXxor,          0x6 */    0xEE,       /* dest |= src;         DSo,    GXor,           0x7 */    0x11,       /* dest = ~src & ~dest; DSon,   GXnor,          0x8 */    0x99,       /* dest ^= ~src ;       DSxn,   GXequiv,        0x9 */    0x55,       /* dest = ~dest;        Dn,     GXInvert,       0xA */    0xDD,       /* dest = src|~dest ;   SDno,   GXorReverse,    0xB */    0x33,       /* dest = ~src;         Sn,     GXcopyInverted, 0xC */    0xBB,       /* dest |= ~src;        DSno,   GXorInverted,   0xD */    0x77,       /* dest = ~src|~dest;   DSan,   GXnand,         0xE */    0xFF,       /* dest = 0xFF;         1,      GXset,          0xF */};/* same ROP but with Pattern as Source */static const u8 sisPatALUConv[] ={    0x00,       /* dest = 0;            0,      GXclear,        0 */    0xA0,       /* dest &= src;         DPa,    GXand,          0x1 */    0x50,       /* dest = src & ~dest;  PDna,   GXandReverse,   0x2 */    0xF0,       /* dest = src;          P,      GXcopy,         0x3 */    0x0A,       /* dest &= ~src;        DPna,   GXandInverted,  0x4 */    0xAA,       /* dest = dest;         D,      GXnoop,         0x5 */    0x5A,       /* dest = ^src;         DPx,    GXxor,          0x6 */    0xFA,       /* dest |= src;         DPo,    GXor,           0x7 */    0x05,       /* dest = ~src & ~dest; DPon,   GXnor,          0x8 */    0xA5,       /* dest ^= ~src ;       DPxn,   GXequiv,        0x9 */    0x55,       /* dest = ~dest;        Dn,     GXInvert,       0xA */    0xF5,       /* dest = src|~dest ;   PDno,   GXorReverse,    0xB */    0x0F,       /* dest = ~src;         Pn,     GXcopyInverted, 0xC */    0xAF,       /* dest |= ~src;        DPno,   GXorInverted,   0xD */    0x5F,       /* dest = ~src|~dest;   DPan,   GXnand,         0xE */    0xFF,       /* dest = 0xFF;         1,      GXset,          0xF */};static const int myrops[] = {   	3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3};/* 300 series ----------------------------------------------------- */#ifdef CONFIG_FB_SIS_300static voidSiS300Sync(struct sis_video_info *ivideo){	SiS300Idle}static voidSiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir,                                 int rop, int trans_color){	SiS300SetupDSTColorDepth(ivideo->DstColor);	SiS300SetupSRCPitch(ivideo->video_linelength)	SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)	if(trans_color != -1) {		SiS300SetupROP(0x0A)		SiS300SetupSRCTrans(trans_color)		SiS300SetupCMDFlag(TRANSPARENT_BITBLT)	} else {	        SiS300SetupROP(sisALUConv[rop])	}	if(xdir > 0) {		SiS300SetupCMDFlag(X_INC)	}	if(ydir > 0) {		SiS300SetupCMDFlag(Y_INC)	}}static voidSiS300SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x,				   int src_y, int dst_x, int dst_y, int width, int height){	u32 srcbase = 0, dstbase = 0;	if(src_y >= 2048) {		srcbase = ivideo->video_linelength * src_y;		src_y = 0;	}	if(dst_y >= 2048) {		dstbase = ivideo->video_linelength * dst_y;		dst_y = 0;	}	SiS300SetupSRCBase(srcbase);	SiS300SetupDSTBase(dstbase);	if(!(ivideo->CommandReg & X_INC))  {		src_x += width-1;		dst_x += width-1;	}	if(!(ivideo->CommandReg & Y_INC))  {		src_y += height-1;		dst_y += height-1;	}	SiS300SetupRect(width, height)	SiS300SetupSRCXY(src_x, src_y)	SiS300SetupDSTXY(dst_x, dst_y)	SiS300DoCMD}static voidSiS300SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop){	SiS300SetupPATFG(color)	SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)	SiS300SetupDSTColorDepth(ivideo->DstColor);	SiS300SetupROP(sisPatALUConv[rop])	SiS300SetupCMDFlag(PATFG)}static voidSiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h){	u32 dstbase = 0;	if(y >= 2048) {		dstbase = ivideo->video_linelength * y;		y = 0;	}	SiS300SetupDSTBase(dstbase)	SiS300SetupDSTXY(x,y)	SiS300SetupRect(w,h)	SiS300SetupCMDFlag(X_INC | Y_INC | BITBLT)	SiS300DoCMD}#endif/* 315/330/340 series ---------------------------------------------- */#ifdef CONFIG_FB_SIS_315static voidSiS310Sync(struct sis_video_info *ivideo){	SiS310Idle}static voidSiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color){	SiS310SetupDSTColorDepth(ivideo->DstColor);	SiS310SetupSRCPitch(ivideo->video_linelength)	SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)	if(trans_color != -1) {		SiS310SetupROP(0x0A)		SiS310SetupSRCTrans(trans_color)		SiS310SetupCMDFlag(TRANSPARENT_BITBLT)	} else {	        SiS310SetupROP(sisALUConv[rop])		/* Set command - not needed, both 0 */		/* SiSSetupCMDFlag(BITBLT | SRCVIDEO) */	}	SiS310SetupCMDFlag(ivideo->SiS310_AccelDepth)	/* The chip is smart enough to know the direction */}static voidSiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y,			 int dst_x, int dst_y, int width, int height){	u32 srcbase = 0, dstbase = 0;	int mymin = min(src_y, dst_y);	int mymax = max(src_y, dst_y);	/* Although the chip knows the direction to use	 * if the source and destination areas overlap,	 * that logic fails if we fiddle with the bitmap	 * addresses. Therefore, we check if the source	 * and destination blitting areas overlap and	 * adapt the bitmap addresses synchronously	 * if the coordinates exceed the valid range.	 * The the areas do not overlap, we do our	 * normal check.	 */	if((mymax - mymin) < height) {		if((src_y >= 2048) || (dst_y >= 2048)) {			srcbase = ivideo->video_linelength * mymin;			dstbase = ivideo->video_linelength * mymin;			src_y -= mymin;			dst_y -= mymin;		}	} else {		if(src_y >= 2048) {			srcbase = ivideo->video_linelength * src_y;			src_y = 0;		}		if(dst_y >= 2048) {			dstbase = ivideo->video_linelength * dst_y;			dst_y = 0;		}	}	srcbase += ivideo->video_offset;	dstbase += ivideo->video_offset;	SiS310SetupSRCBase(srcbase);	SiS310SetupDSTBase(dstbase);	SiS310SetupRect(width, height)	SiS310SetupSRCXY(src_x, src_y)	SiS310SetupDSTXY(dst_x, dst_y)	SiS310DoCMD}static voidSiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop){	SiS310SetupPATFG(color)	SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)	SiS310SetupDSTColorDepth(ivideo->DstColor);	SiS310SetupROP(sisPatALUConv[rop])	SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth)}static voidSiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h){	u32 dstbase = 0;	if(y >= 2048) {		dstbase = ivideo->video_linelength * y;		y = 0;	}	dstbase += ivideo->video_offset;	SiS310SetupDSTBase(dstbase)	SiS310SetupDSTXY(x,y)	SiS310SetupRect(w,h)	SiS310SetupCMDFlag(BITBLT)	SiS310DoCMD}#endif/* --------------------------------------------------------------------- *//* The exported routines */int sisfb_initaccel(struct sis_video_info *ivideo){#ifdef SISFB_USE_SPINLOCKS	spin_lock_init(&ivideo->lockaccel);#endif	return 0;}void sisfb_syncaccel(struct sis_video_info *ivideo){	if(ivideo->sisvga_engine == SIS_300_VGA) {#ifdef CONFIG_FB_SIS_300		SiS300Sync(ivideo);#endif	} else {#ifdef CONFIG_FB_SIS_315		SiS310Sync(ivideo);#endif	}}int fbcon_sis_sync(struct fb_info *info){	struct sis_video_info *ivideo = (struct sis_video_info *)info->par;	CRITFLAGS	if((!ivideo->accel) || (!ivideo->engineok))		return 0;	CRITBEGIN	sisfb_syncaccel(ivideo);	CRITEND	return 0;}void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect){	struct sis_video_info *ivideo = (struct sis_video_info *)info->par;	u32 col = 0;	u32 vxres = info->var.xres_virtual;	u32 vyres = info->var.yres_virtual;	int width, height;	CRITFLAGS	if(info->state != FBINFO_STATE_RUNNING)		return;	if((!ivideo->accel) || (!ivideo->engineok)) {		cfb_fillrect(info, rect);		return;	}	if(!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres)		return;	/* Clipping */	width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width;	height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height;	switch(info->var.bits_per_pixel) {	case 8:  col = rect->color;		 break;	case 16:	case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];		 break;	}	if(ivideo->sisvga_engine == SIS_300_VGA) {#ifdef CONFIG_FB_SIS_300		CRITBEGIN		SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]);		SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);		CRITEND#endif	} else {#ifdef CONFIG_FB_SIS_315		CRITBEGIN		SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]);		SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);		CRITEND#endif	}	sisfb_syncaccel(ivideo);}void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area){	struct sis_video_info *ivideo = (struct sis_video_info *)info->par;	u32 vxres = info->var.xres_virtual;	u32 vyres = info->var.yres_virtual;	int width = area->width;	int height = area->height;	CRITFLAGS	if(info->state != FBINFO_STATE_RUNNING)		return;	if((!ivideo->accel) || (!ivideo->engineok)) {		cfb_copyarea(info, area);		return;	}	if(!width || !height ||	   area->sx >= vxres || area->sy >= vyres ||	   area->dx >= vxres || area->dy >= vyres)		return;	/* Clipping */	if((area->sx + width) > vxres) width = vxres - area->sx;	if((area->dx + width) > vxres) width = vxres - area->dx;	if((area->sy + height) > vyres) height = vyres - area->sy;	if((area->dy + height) > vyres) height = vyres - area->dy;	if(ivideo->sisvga_engine == SIS_300_VGA) {#ifdef CONFIG_FB_SIS_300		int xdir, ydir;		if(area->sx < area->dx) xdir = 0;		else                    xdir = 1;		if(area->sy < area->dy) ydir = 0;		else                    ydir = 1;		CRITBEGIN		SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3, -1);		SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,					area->dx, area->dy, width, height);		CRITEND#endif	} else {#ifdef CONFIG_FB_SIS_315		CRITBEGIN		SiS310SetupForScreenToScreenCopy(ivideo, 3, -1);		SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,					area->dx, area->dy, width, height);		CRITEND#endif	}	sisfb_syncaccel(ivideo);}