cregit-Linux how code gets into the kernel

Release 4.11 drivers/video/fbdev/sis/sis_accel.h

/*
 * 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 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

Overall Contributors

PersonTokensPropCommitsCommitProp
James Simmons68790.51%240.00%
Thomas Winischhofer699.09%240.00%
Andrew Morton30.40%120.00%
Total759100.00%5100.00%
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