/* * SiS 300/630/730/540/315/550/650/740 frame buffer driver * for Linux kernels 2.4.x and 2.5.x * * 2D acceleration part * * Based on the X driver's sis300_accel.h which is *     Copyright Xavier Ducoin <x.ducoin@lectra.com> *     Copyright 2002 by Thomas Winischhofer, Vienna, Austria * and sis310_accel.h which is *     Copyright 2002 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 310/325 */#define ALPHA_BLEND		0x00000007  /* Alpha blend ? */#define A3D_FUNCTION		0x00000008  /* 3D command ? */#define	CLEAR_Z_BUFFER		0x00000009  /* ? */#define GRADIENT_FILL		0x0000000A  /* Gradient fill */#define STRETCH_BITBLT		0x0000000B  /* Stretched Blit *//* 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/* Line */#define LINE_STYLE              0x00800000#define NO_RESET_COUNTER        0x00400000#define NO_LAST_PIXEL           0x00200000/* Subfunctions for Color/Enhanced Color Expansion (310/325 only) */#define COLOR_TO_MONO		0x00100000#define AA_TEXT			0x00200000/* Some general registers for 310/325 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 *//* Line registers */#define LINE_X0			SRC_Y#define LINE_X1			DST_Y#define LINE_Y0			SRC_X#define LINE_Y1			DST_X#define LINE_COUNT		RECT_WIDTH#define LINE_STYLE_PERIOD	RECT_HEIGHT#define LINE_STYLE_0		MONO_MASK#define LINE_STYLE_1		0x8230#define LINE_XN			PATTERN_REG#define LINE_YN			PATTERN_REG+2/* 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/* Queue */#define Q_BASE_ADDR		0x85C0  /* Base address of software queue (?) */#define Q_WRITE_PTR		0x85C4  /* Current write pointer (?) */#define Q_READ_PTR		0x85C8  /* Current read pointer (?) */#define Q_STATUS		0x85CC  /* queue status */#define MMIO_IN8(base, offset) \	*(volatile u8 *)(((u8*)(base)) + (offset))#define MMIO_IN16(base, offset) \	*(volatile u16 *)(void *)(((u8*)(base)) + (offset))#define MMIO_IN32(base, offset) \	*(volatile u32 *)(void *)(((u8*)(base)) + (offset))#define MMIO_OUT8(base, offset, val) \	*(volatile u8 *)(((u8*)(base)) + (offset)) = (val)#define MMIO_OUT16(base, offset, val) \	*(volatile u16 *)(void *)(((u8*)(base)) + (offset)) = (val)#define MMIO_OUT32(base, offset, val) \	*(volatile u32 *)(void *)(((u8*)(base)) + (offset)) = (val)/* ------------- SiS 300 series -------------- *//* Macros to do useful things with the SIS BitBLT engine *//* BR(16) (0x8420):   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*//* TW: BR(16)+2 = 0x8242 */int     CmdQueLen;#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); \  }/* TW: (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) \