drivers/video/fbdev/sis/sis_accel.h - third_party/linux - Git at Google


            
            /* SPDX-License-Identifier: GPL-2.0-or-later */

            
            /*

            
             * 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

            
             *

            
             * Based on the X driver's sis300_accel.h which is

            
             *     Copyright (C) 2001-2004 by Thomas Winischhofer, Vienna, Austria

            
             * and sis310_accel.h which is

            
             *     Copyright (C) 2001-2004 by Thomas Winischhofer, Vienna, Austria

            
             *

            
             * Author:   Thomas Winischhofer <thomas@winischhofer.net>:

            
             *			(see http://www.winischhofer.net/

            
             *			for more information and updates)

            
             */


            #ifndef _SISFB_ACCEL_H

            
            #define _SISFB_ACCEL_H


            /* Guard accelerator accesses with spin_lock_irqsave? Works well without. */

            
            #undef SISFB_USE_SPINLOCKS


            #ifdef SISFB_USE_SPINLOCKS

            
            #include <linux/spinlock.h>

            
            #define CRITBEGIN  spin_lock_irqsave(&ivideo->lockaccel, critflags);

            
            #define CRITEND	   spin_unlock_irqrestore(&ivideo->lockaccel, critflags);

            
            #define CRITFLAGS  unsigned long critflags;

            
            #else

            
            #define CRITBEGIN

            
            #define CRITEND

            
            #define CRITFLAGS

            
            #endif


            /* Definitions for the SIS engine communication. */


            #define PATREGSIZE      384  /* Pattern register size. 384 bytes @ 0x8300 */

            
            #define BR(x)   (0x8200 | (x) << 2)

            
            #define PBR(x)  (0x8300 | (x) << 2)


            /* SiS300 engine commands */

            
            #define BITBLT                  0x00000000  /* Blit */

            
            #define COLOREXP                0x00000001  /* Color expand */

            
            #define ENCOLOREXP              0x00000002  /* Enhanced color expand */

            
            #define MULTIPLE_SCANLINE       0x00000003  /* ? */

            
            #define LINE                    0x00000004  /* Draw line */

            
            #define TRAPAZOID_FILL          0x00000005  /* Fill trapezoid */

            
            #define TRANSPARENT_BITBLT      0x00000006  /* Transparent Blit */


            /* Additional engine commands for 315 */

            
            #define ALPHA_BLEND		0x00000007  /* Alpha blend ? */

            
            #define A3D_FUNCTION		0x00000008  /* 3D command ? */

            
            #define	CLEAR_Z_BUFFER		0x00000009  /* ? */

            
            #define GRADIENT_FILL		0x0000000A  /* Gradient fill */


            /* source select */

            
            #define SRCVIDEO                0x00000000  /* source is video RAM */

            
            #define SRCSYSTEM               0x00000010  /* source is system memory */

            
            #define SRCCPUBLITBUF           SRCSYSTEM   /* source is CPU-driven BitBuffer (for color expand) */

            
            #define SRCAGP                  0x00000020  /* source is AGP memory (?) */


            /* Pattern flags */

            
            #define PATFG                   0x00000000  /* foreground color */

            
            #define PATPATREG               0x00000040  /* pattern in pattern buffer (0x8300) */

            
            #define PATMONO                 0x00000080  /* mono pattern */


            /* blitting direction (300 series only) */

            
            #define X_INC                   0x00010000

            
            #define X_DEC                   0x00000000

            
            #define Y_INC                   0x00020000

            
            #define Y_DEC                   0x00000000


            /* Clipping flags */

            
            #define NOCLIP                  0x00000000

            
            #define NOMERGECLIP             0x04000000

            
            #define CLIPENABLE              0x00040000

            
            #define CLIPWITHOUTMERGE        0x04040000


            /* Transparency */

            
            #define OPAQUE                  0x00000000

            
            #define TRANSPARENT             0x00100000


            /* ? */

            
            #define DSTAGP                  0x02000000

            
            #define DSTVIDEO                0x02000000


            /* Subfunctions for Color/Enhanced Color Expansion (315 only) */

            
            #define COLOR_TO_MONO		0x00100000

            
            #define AA_TEXT			0x00200000


            /* Some general registers for 315 series */

            
            #define SRC_ADDR		0x8200

            
            #define SRC_PITCH		0x8204

            
            #define AGP_BASE		0x8206 /* color-depth dependent value */

            
            #define SRC_Y			0x8208

            
            #define SRC_X			0x820A

            
            #define DST_Y			0x820C

            
            #define DST_X			0x820E

            
            #define DST_ADDR		0x8210

            
            #define DST_PITCH		0x8214

            
            #define DST_HEIGHT		0x8216

            
            #define RECT_WIDTH		0x8218

            
            #define RECT_HEIGHT		0x821A

            
            #define PAT_FGCOLOR		0x821C

            
            #define PAT_BGCOLOR		0x8220

            
            #define SRC_FGCOLOR		0x8224

            
            #define SRC_BGCOLOR		0x8228

            
            #define MONO_MASK		0x822C

            
            #define LEFT_CLIP		0x8234

            
            #define TOP_CLIP		0x8236

            
            #define RIGHT_CLIP		0x8238

            
            #define BOTTOM_CLIP		0x823A

            
            #define COMMAND_READY		0x823C

            
            #define FIRE_TRIGGER      	0x8240


            #define PATTERN_REG		0x8300  /* 384 bytes pattern buffer */


            /* Transparent bitblit registers */

            
            #define TRANS_DST_KEY_HIGH	PAT_FGCOLOR

            
            #define TRANS_DST_KEY_LOW	PAT_BGCOLOR

            
            #define TRANS_SRC_KEY_HIGH	SRC_FGCOLOR

            
            #define TRANS_SRC_KEY_LOW	SRC_BGCOLOR


            /* Store queue length in par */

            
            #define CmdQueLen ivideo->cmdqueuelength


            /* ------------- SiS 300 series -------------- */


            /* BR(16) (0x8240):


               bit 31 2D engine: 1 is idle,

            
               bit 30 3D engine: 1 is idle,

            
               bit 29 Command queue: 1 is empty

            
               bits 28:24: Current CPU driven BitBlt buffer stage bit[4:0]

            
               bits 15:0:  Current command queue length


            */


            #define SiS300Idle \

            
              { \

            
            	while((MMIO_IN16(ivideo->mmio_vbase, BR(16)+2) & 0xE000) != 0xE000){} \

            
            	while((MMIO_IN16(ivideo->mmio_vbase, BR(16)+2) & 0xE000) != 0xE000){} \

            
            	while((MMIO_IN16(ivideo->mmio_vbase, BR(16)+2) & 0xE000) != 0xE000){} \

            
              	CmdQueLen = MMIO_IN16(ivideo->mmio_vbase, 0x8240); \

            
              }

            
            /* (do three times, because 2D engine seems quite unsure about whether or not it's idle) */


            #define SiS300SetupSRCBase(base) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(0), base);\

            
            	CmdQueLen--;


            #define SiS300SetupSRCPitch(pitch) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT16(ivideo->mmio_vbase, BR(1), pitch);\

            
            	CmdQueLen--;


            #define SiS300SetupSRCXY(x,y) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(2), (x)<<16 | (y) );\

            
            	CmdQueLen--;


            #define SiS300SetupDSTBase(base) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(4), base);\

            
            	CmdQueLen--;


            #define SiS300SetupDSTXY(x,y) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(3), (x)<<16 | (y) );\

            
            	CmdQueLen--;


            #define SiS300SetupDSTRect(x,y) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(5), (y)<<16 | (x) );\

            
            	CmdQueLen--;


            #define SiS300SetupDSTColorDepth(bpp) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT16(ivideo->mmio_vbase, BR(1)+2, bpp);\

            
            	CmdQueLen--;


            #define SiS300SetupRect(w,h) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(6), (h)<<16 | (w) );\

            
            	CmdQueLen--;


            #define SiS300SetupPATFG(color) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(7), color);\

            
            	CmdQueLen--;


            #define SiS300SetupPATBG(color) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(8), color);\

            
            	CmdQueLen--;


            #define SiS300SetupSRCFG(color) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(9), color);\

            
            	CmdQueLen--;


            #define SiS300SetupSRCBG(color) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(10), color);\

            
            	CmdQueLen--;


            /* 0x8224 src colorkey high */

            
            /* 0x8228 src colorkey low */

            
            /* 0x821c dest colorkey high */

            
            /* 0x8220 dest colorkey low */

            
            #define SiS300SetupSRCTrans(color) \

            
            	if(CmdQueLen <= 1) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, 0x8224, color);\

            
            	MMIO_OUT32(ivideo->mmio_vbase, 0x8228, color);\

            
            	CmdQueLen -= 2;


            #define SiS300SetupDSTTrans(color) \

            
            	if(CmdQueLen <= 1) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, 0x821C, color); \

            
            	MMIO_OUT32(ivideo->mmio_vbase, 0x8220, color); \

            
            	CmdQueLen -= 2;


            #define SiS300SetupMONOPAT(p0,p1) \

            
            	if(CmdQueLen <= 1) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(11), p0);\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(12), p1);\

            
            	CmdQueLen -= 2;


            #define SiS300SetupClipLT(left,top) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(13), ((left) & 0xFFFF) | (top)<<16 );\

            
            	CmdQueLen--;


            #define SiS300SetupClipRB(right,bottom) \

            
            	if(CmdQueLen <= 0) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(14), ((right) & 0xFFFF) | (bottom)<<16 );\

            
            	CmdQueLen--;


            /* General */

            
            #define SiS300SetupROP(rop) \

            
            	ivideo->CommandReg = (rop) << 8;


            #define SiS300SetupCMDFlag(flags) \

            
            	ivideo->CommandReg |= (flags);


            #define SiS300DoCMD \

            
            	if(CmdQueLen <= 1) SiS300Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(15), ivideo->CommandReg); \

            
            	MMIO_OUT32(ivideo->mmio_vbase, BR(16), 0);\

            
            	CmdQueLen -= 2;


            /* -------------- SiS 315/330 series --------------- */


            /* Q_STATUS:

            
               bit 31 = 1: All engines idle and all queues empty

            
               bit 30 = 1: Hardware Queue (=HW CQ, 2D queue, 3D queue) empty

            
               bit 29 = 1: 2D engine is idle

            
               bit 28 = 1: 3D engine is idle

            
               bit 27 = 1: HW command queue empty

            
               bit 26 = 1: 2D queue empty

            
               bit 25 = 1: 3D queue empty

            
               bit 24 = 1: SW command queue empty

            
               bits 23:16: 2D counter 3

            
               bits 15:8:  2D counter 2

            
               bits 7:0:   2D counter 1

            
            */


            #define SiS310Idle \

            
              { \

            
            	while( (MMIO_IN16(ivideo->mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){} \

            
            	while( (MMIO_IN16(ivideo->mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){} \

            
            	while( (MMIO_IN16(ivideo->mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){} \

            
            	while( (MMIO_IN16(ivideo->mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){} \

            
              	CmdQueLen = 0; \

            
              }


            #define SiS310SetupSRCBase(base) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, SRC_ADDR, base);\

            
            	CmdQueLen--;


            #define SiS310SetupSRCPitch(pitch) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT16(ivideo->mmio_vbase, SRC_PITCH, pitch);\

            
            	CmdQueLen--;


            #define SiS310SetupSRCXY(x,y) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, SRC_Y, (x)<<16 | (y) );\

            
            	CmdQueLen--;


            #define SiS310SetupDSTBase(base) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, DST_ADDR, base);\

            
            	CmdQueLen--;


            #define SiS310SetupDSTXY(x,y) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, DST_Y, (x)<<16 | (y) );\

            
            	CmdQueLen--;


            #define SiS310SetupDSTRect(x,y) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, DST_PITCH, (y)<<16 | (x) );\

            
            	CmdQueLen--;


            #define SiS310SetupDSTColorDepth(bpp) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT16(ivideo->mmio_vbase, AGP_BASE, bpp);\

            
            	CmdQueLen--;


            #define SiS310SetupRect(w,h) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, RECT_WIDTH, (h)<<16 | (w) );\

            
            	CmdQueLen--;


            #define SiS310SetupPATFG(color) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, PAT_FGCOLOR, color);\

            
            	CmdQueLen--;


            #define SiS310SetupPATBG(color) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, PAT_BGCOLOR, color);\

            
            	CmdQueLen--;


            #define SiS310SetupSRCFG(color) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, SRC_FGCOLOR, color);\

            
            	CmdQueLen--;


            #define SiS310SetupSRCBG(color) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, SRC_BGCOLOR, color);\

            
            	CmdQueLen--;


            #define SiS310SetupSRCTrans(color) \

            
            	if(CmdQueLen <= 1) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, TRANS_SRC_KEY_HIGH, color);\

            
            	MMIO_OUT32(ivideo->mmio_vbase, TRANS_SRC_KEY_LOW, color);\

            
            	CmdQueLen -= 2;


            #define SiS310SetupDSTTrans(color) \

            
            	if(CmdQueLen <= 1) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, TRANS_DST_KEY_HIGH, color); \

            
            	MMIO_OUT32(ivideo->mmio_vbase, TRANS_DST_KEY_LOW, color); \

            
            	CmdQueLen -= 2;


            #define SiS310SetupMONOPAT(p0,p1) \

            
            	if(CmdQueLen <= 1) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, MONO_MASK, p0);\

            
            	MMIO_OUT32(ivideo->mmio_vbase, MONO_MASK+4, p1);\

            
            	CmdQueLen -= 2;


            #define SiS310SetupClipLT(left,top) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, LEFT_CLIP, ((left) & 0xFFFF) | (top)<<16 );\

            
            	CmdQueLen--;


            #define SiS310SetupClipRB(right,bottom) \

            
            	if(CmdQueLen <= 0) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, RIGHT_CLIP, ((right) & 0xFFFF) | (bottom)<<16 );\

            
            	CmdQueLen--;


            #define SiS310SetupROP(rop) \

            
            	ivideo->CommandReg = (rop) << 8;


            #define SiS310SetupCMDFlag(flags) \

            
            	ivideo->CommandReg |= (flags);


            #define SiS310DoCMD \

            
            	if(CmdQueLen <= 1) SiS310Idle;\

            
            	MMIO_OUT32(ivideo->mmio_vbase, COMMAND_READY, ivideo->CommandReg); \

            
            	MMIO_OUT32(ivideo->mmio_vbase, FIRE_TRIGGER, 0); \

            
            	CmdQueLen -= 2;


            int  sisfb_initaccel(struct sis_video_info *ivideo);

            
            void sisfb_syncaccel(struct sis_video_info *ivideo);


            int  fbcon_sis_sync(struct fb_info *info);

            
            void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect);

            
            void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area);


            #endif
	/* SPDX-License-Identifier: GPL-2.0-or-later */
	/*
	* 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
	*
	* Based on the X driver's sis300_accel.h which is
	* Copyright (C) 2001-2004 by Thomas Winischhofer, Vienna, Austria
	* and sis310_accel.h which is
	* Copyright (C) 2001-2004 by Thomas Winischhofer, Vienna, Austria
	*
	* Author: Thomas Winischhofer <thomas@winischhofer.net>:
	* (see http://www.winischhofer.net/
	* for more information and updates)
	*/

	#ifndef _SISFB_ACCEL_H
	#define _SISFB_ACCEL_H

	/* Guard accelerator accesses with spin_lock_irqsave? Works well without. */
	#undef SISFB_USE_SPINLOCKS

	#ifdef SISFB_USE_SPINLOCKS
	#include <linux/spinlock.h>
	#define CRITBEGIN spin_lock_irqsave(&ivideo->lockaccel, critflags);
	#define CRITEND spin_unlock_irqrestore(&ivideo->lockaccel, critflags);
	#define CRITFLAGS unsigned long critflags;
	#else
	#define CRITBEGIN
	#define CRITEND
	#define CRITFLAGS
	#endif

	/* Definitions for the SIS engine communication. */

	#define PATREGSIZE 384 /* Pattern register size. 384 bytes @ 0x8300 */
	#define BR(x) (0x8200 \| (x) << 2)
	#define PBR(x) (0x8300 \| (x) << 2)

	/* SiS300 engine commands */
	#define BITBLT 0x00000000 /* Blit */
	#define COLOREXP 0x00000001 /* Color expand */
	#define ENCOLOREXP 0x00000002 /* Enhanced color expand */
	#define MULTIPLE_SCANLINE 0x00000003 /* ? */
	#define LINE 0x00000004 /* Draw line */
	#define TRAPAZOID_FILL 0x00000005 /* Fill trapezoid */
	#define TRANSPARENT_BITBLT 0x00000006 /* Transparent Blit */

	/* Additional engine commands for 315 */
	#define ALPHA_BLEND 0x00000007 /* Alpha blend ? */
	#define A3D_FUNCTION 0x00000008 /* 3D command ? */
	#define CLEAR_Z_BUFFER 0x00000009 /* ? */
	#define GRADIENT_FILL 0x0000000A /* Gradient fill */

	/* source select */
	#define SRCVIDEO 0x00000000 /* source is video RAM */
	#define SRCSYSTEM 0x00000010 /* source is system memory */
	#define SRCCPUBLITBUF SRCSYSTEM /* source is CPU-driven BitBuffer (for color expand) */
	#define SRCAGP 0x00000020 /* source is AGP memory (?) */

	/* Pattern flags */
	#define PATFG 0x00000000 /* foreground color */
	#define PATPATREG 0x00000040 /* pattern in pattern buffer (0x8300) */
	#define PATMONO 0x00000080 /* mono pattern */

	/* blitting direction (300 series only) */
	#define X_INC 0x00010000
	#define X_DEC 0x00000000
	#define Y_INC 0x00020000
	#define Y_DEC 0x00000000

	/* Clipping flags */
	#define NOCLIP 0x00000000
	#define NOMERGECLIP 0x04000000
	#define CLIPENABLE 0x00040000
	#define CLIPWITHOUTMERGE 0x04040000

	/* Transparency */
	#define OPAQUE 0x00000000
	#define TRANSPARENT 0x00100000

	/* ? */
	#define DSTAGP 0x02000000
	#define DSTVIDEO 0x02000000

	/* Subfunctions for Color/Enhanced Color Expansion (315 only) */
	#define COLOR_TO_MONO 0x00100000
	#define AA_TEXT 0x00200000

	/* Some general registers for 315 series */
	#define SRC_ADDR 0x8200
	#define SRC_PITCH 0x8204
	#define AGP_BASE 0x8206 /* color-depth dependent value */
	#define SRC_Y 0x8208
	#define SRC_X 0x820A
	#define DST_Y 0x820C
	#define DST_X 0x820E
	#define DST_ADDR 0x8210
	#define DST_PITCH 0x8214
	#define DST_HEIGHT 0x8216
	#define RECT_WIDTH 0x8218
	#define RECT_HEIGHT 0x821A
	#define PAT_FGCOLOR 0x821C
	#define PAT_BGCOLOR 0x8220
	#define SRC_FGCOLOR 0x8224
	#define SRC_BGCOLOR 0x8228
	#define MONO_MASK 0x822C
	#define LEFT_CLIP 0x8234
	#define TOP_CLIP 0x8236
	#define RIGHT_CLIP 0x8238
	#define BOTTOM_CLIP 0x823A
	#define COMMAND_READY 0x823C
	#define FIRE_TRIGGER 0x8240

	#define PATTERN_REG 0x8300 /* 384 bytes pattern buffer */

	/* Transparent bitblit registers */
	#define TRANS_DST_KEY_HIGH PAT_FGCOLOR
	#define TRANS_DST_KEY_LOW PAT_BGCOLOR
	#define TRANS_SRC_KEY_HIGH SRC_FGCOLOR
	#define TRANS_SRC_KEY_LOW SRC_BGCOLOR

	/* Store queue length in par */
	#define CmdQueLen ivideo->cmdqueuelength

	/* ------------- SiS 300 series -------------- */

	/* BR(16) (0x8240):

	bit 31 2D engine: 1 is idle,
	bit 30 3D engine: 1 is idle,
	bit 29 Command queue: 1 is empty
	bits 28:24: Current CPU driven BitBlt buffer stage bit[4:0]
	bits 15:0: Current command queue length

	*/

	#define SiS300Idle \
	{ \
	while((MMIO_IN16(ivideo->mmio_vbase, BR(16)+2) & 0xE000) != 0xE000){} \
	while((MMIO_IN16(ivideo->mmio_vbase, BR(16)+2) & 0xE000) != 0xE000){} \
	while((MMIO_IN16(ivideo->mmio_vbase, BR(16)+2) & 0xE000) != 0xE000){} \
	CmdQueLen = MMIO_IN16(ivideo->mmio_vbase, 0x8240); \
	}
	/* (do three times, because 2D engine seems quite unsure about whether or not it's idle) */

	#define SiS300SetupSRCBase(base) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(0), base);\
	CmdQueLen--;

	#define SiS300SetupSRCPitch(pitch) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT16(ivideo->mmio_vbase, BR(1), pitch);\
	CmdQueLen--;

	#define SiS300SetupSRCXY(x,y) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(2), (x)<<16 \| (y) );\
	CmdQueLen--;

	#define SiS300SetupDSTBase(base) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(4), base);\
	CmdQueLen--;

	#define SiS300SetupDSTXY(x,y) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(3), (x)<<16 \| (y) );\
	CmdQueLen--;

	#define SiS300SetupDSTRect(x,y) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(5), (y)<<16 \| (x) );\
	CmdQueLen--;

	#define SiS300SetupDSTColorDepth(bpp) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT16(ivideo->mmio_vbase, BR(1)+2, bpp);\
	CmdQueLen--;

	#define SiS300SetupRect(w,h) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(6), (h)<<16 \| (w) );\
	CmdQueLen--;

	#define SiS300SetupPATFG(color) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(7), color);\
	CmdQueLen--;

	#define SiS300SetupPATBG(color) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(8), color);\
	CmdQueLen--;

	#define SiS300SetupSRCFG(color) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(9), color);\
	CmdQueLen--;

	#define SiS300SetupSRCBG(color) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(10), color);\
	CmdQueLen--;

	/* 0x8224 src colorkey high */
	/* 0x8228 src colorkey low */
	/* 0x821c dest colorkey high */
	/* 0x8220 dest colorkey low */
	#define SiS300SetupSRCTrans(color) \
	if(CmdQueLen <= 1) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, 0x8224, color);\
	MMIO_OUT32(ivideo->mmio_vbase, 0x8228, color);\
	CmdQueLen -= 2;

	#define SiS300SetupDSTTrans(color) \
	if(CmdQueLen <= 1) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, 0x821C, color); \
	MMIO_OUT32(ivideo->mmio_vbase, 0x8220, color); \
	CmdQueLen -= 2;

	#define SiS300SetupMONOPAT(p0,p1) \
	if(CmdQueLen <= 1) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(11), p0);\
	MMIO_OUT32(ivideo->mmio_vbase, BR(12), p1);\
	CmdQueLen -= 2;

	#define SiS300SetupClipLT(left,top) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(13), ((left) & 0xFFFF) \| (top)<<16 );\
	CmdQueLen--;

	#define SiS300SetupClipRB(right,bottom) \
	if(CmdQueLen <= 0) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(14), ((right) & 0xFFFF) \| (bottom)<<16 );\
	CmdQueLen--;

	/* General */
	#define SiS300SetupROP(rop) \
	ivideo->CommandReg = (rop) << 8;

	#define SiS300SetupCMDFlag(flags) \
	ivideo->CommandReg \|= (flags);

	#define SiS300DoCMD \
	if(CmdQueLen <= 1) SiS300Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, BR(15), ivideo->CommandReg); \
	MMIO_OUT32(ivideo->mmio_vbase, BR(16), 0);\
	CmdQueLen -= 2;

	/* -------------- SiS 315/330 series --------------- */

	/* Q_STATUS:
	bit 31 = 1: All engines idle and all queues empty
	bit 30 = 1: Hardware Queue (=HW CQ, 2D queue, 3D queue) empty
	bit 29 = 1: 2D engine is idle
	bit 28 = 1: 3D engine is idle
	bit 27 = 1: HW command queue empty
	bit 26 = 1: 2D queue empty
	bit 25 = 1: 3D queue empty
	bit 24 = 1: SW command queue empty
	bits 23:16: 2D counter 3
	bits 15:8: 2D counter 2
	bits 7:0: 2D counter 1
	*/

	#define SiS310Idle \
	{ \
	while( (MMIO_IN16(ivideo->mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){} \
	while( (MMIO_IN16(ivideo->mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){} \
	while( (MMIO_IN16(ivideo->mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){} \
	while( (MMIO_IN16(ivideo->mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){} \
	CmdQueLen = 0; \
	}

	#define SiS310SetupSRCBase(base) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, SRC_ADDR, base);\
	CmdQueLen--;

	#define SiS310SetupSRCPitch(pitch) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT16(ivideo->mmio_vbase, SRC_PITCH, pitch);\
	CmdQueLen--;

	#define SiS310SetupSRCXY(x,y) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, SRC_Y, (x)<<16 \| (y) );\
	CmdQueLen--;

	#define SiS310SetupDSTBase(base) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, DST_ADDR, base);\
	CmdQueLen--;

	#define SiS310SetupDSTXY(x,y) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, DST_Y, (x)<<16 \| (y) );\
	CmdQueLen--;

	#define SiS310SetupDSTRect(x,y) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, DST_PITCH, (y)<<16 \| (x) );\
	CmdQueLen--;

	#define SiS310SetupDSTColorDepth(bpp) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT16(ivideo->mmio_vbase, AGP_BASE, bpp);\
	CmdQueLen--;

	#define SiS310SetupRect(w,h) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, RECT_WIDTH, (h)<<16 \| (w) );\
	CmdQueLen--;

	#define SiS310SetupPATFG(color) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, PAT_FGCOLOR, color);\
	CmdQueLen--;

	#define SiS310SetupPATBG(color) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, PAT_BGCOLOR, color);\
	CmdQueLen--;

	#define SiS310SetupSRCFG(color) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, SRC_FGCOLOR, color);\
	CmdQueLen--;

	#define SiS310SetupSRCBG(color) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, SRC_BGCOLOR, color);\
	CmdQueLen--;

	#define SiS310SetupSRCTrans(color) \
	if(CmdQueLen <= 1) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, TRANS_SRC_KEY_HIGH, color);\
	MMIO_OUT32(ivideo->mmio_vbase, TRANS_SRC_KEY_LOW, color);\
	CmdQueLen -= 2;

	#define SiS310SetupDSTTrans(color) \
	if(CmdQueLen <= 1) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, TRANS_DST_KEY_HIGH, color); \
	MMIO_OUT32(ivideo->mmio_vbase, TRANS_DST_KEY_LOW, color); \
	CmdQueLen -= 2;

	#define SiS310SetupMONOPAT(p0,p1) \
	if(CmdQueLen <= 1) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, MONO_MASK, p0);\
	MMIO_OUT32(ivideo->mmio_vbase, MONO_MASK+4, p1);\
	CmdQueLen -= 2;

	#define SiS310SetupClipLT(left,top) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, LEFT_CLIP, ((left) & 0xFFFF) \| (top)<<16 );\
	CmdQueLen--;

	#define SiS310SetupClipRB(right,bottom) \
	if(CmdQueLen <= 0) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, RIGHT_CLIP, ((right) & 0xFFFF) \| (bottom)<<16 );\
	CmdQueLen--;

	#define SiS310SetupROP(rop) \
	ivideo->CommandReg = (rop) << 8;

	#define SiS310SetupCMDFlag(flags) \
	ivideo->CommandReg \|= (flags);

	#define SiS310DoCMD \
	if(CmdQueLen <= 1) SiS310Idle;\
	MMIO_OUT32(ivideo->mmio_vbase, COMMAND_READY, ivideo->CommandReg); \
	MMIO_OUT32(ivideo->mmio_vbase, FIRE_TRIGGER, 0); \
	CmdQueLen -= 2;

	int sisfb_initaccel(struct sis_video_info *ivideo);
	void sisfb_syncaccel(struct sis_video_info *ivideo);

	int fbcon_sis_sync(struct fb_info *info);
	void fbcon_sis_fillrect(struct fb_info info, const struct fb_fillrect rect);
	void fbcon_sis_copyarea(struct fb_info info, const struct fb_copyarea area);

	#endif