/*
* SiS 300/630/730/540/315/550/65x/74x/330/760 frame buffer driver
* for Linux kernels 2.4.x and 2.6.x
*
* 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 driver's sis300_accel.c which is
* Copyright (C) 2001-2004 by Thomas Winischhofer, Vienna, Austria
* and sis310_accel.c 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)
*/
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/console.h>
#include <linux/selection.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/vt_kern.h>
#include <linux/capability.h>
#include <linux/fs.h>
#include <linux/agp_backend.h>
#include <linux/types.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
#include <linux/sisfb.h>
#else
#include <video/sisfb.h>
#endif
#include <asm/io.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
#include <video/fbcon.h>
#include <video/fbcon-cfb8.h>
#include <video/fbcon-cfb16.h>
#include <video/fbcon-cfb24.h>
#include <video/fbcon-cfb32.h>
#endif
#include "osdef.h"
#include "vgatypes.h"
#include "vstruct.h"
#include "sis_accel.h"
#include "sis.h"
extern struct video_info ivideo;
extern VGA_ENGINE sisvga_engine;
extern int sisfb_accel;
static const int 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 int 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 */
};
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,34)
static const unsigned char myrops[] = {
3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
};
#endif
/* 300 series ----------------------------------------------------- */
#ifdef CONFIG_FB_SIS_300
static void
SiS300Sync(void)
{
SiS300Idle
}
static void
SiS300SetupForScreenToScreenCopy(int xdir, int ydir, int rop,
unsigned int planemask, int trans_color)
{
SiS300SetupDSTColorDepth(ivideo.DstColor);
SiS300SetupSRCPitch(ivideo.video_linelength)
SiS300SetupDSTRect(ivideo.video_linelength, -1)
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 void
SiS300SubsequentScreenToScreenCopy(int src_x, int src_y, int dst_x, int dst_y,
int width, int height)
{
long srcbase, dstbase;
srcbase = 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 void
SiS300SetupForSolidFill(int color, int rop, unsigned int planemask)
{
SiS300SetupPATFG(color)
SiS300SetupDSTRect(ivideo.video_linelength, -1)
SiS300SetupDSTColorDepth(ivideo.DstColor);
SiS300SetupROP(sisPatALUConv[rop])
SiS300SetupCMDFlag(PATFG)
}
static void
SiS300SubsequentSolidFillRect(int x, int y, int w, int h)
{
long dstbase;
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 series ------------------------------------------------- */
#ifdef CONFIG_FB_SIS_315
static void
SiS310Sync(void)
{
SiS310Idle
}
static void
SiS310SetupForScreenToScreenCopy(int xdir, int ydir, int rop,
unsigned int planemask, int trans_color)
{
SiS310SetupDSTColorDepth(ivideo.DstColor);
SiS310SetupSRCPitch(ivideo.video_linelength)
SiS310SetupDSTRect(ivideo.video_linelength, -1)
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 315 series is smart enough to know the direction */
}
static void
SiS310SubsequentScreenToScreenCopy(int src_x, int src_y, int dst_x, int dst_y,
int width, int height)
{
long srcbase, dstbase;
int mymin, mymax;
srcbase = dstbase = 0;
mymin = min(src_y, dst_y);
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;
}
}
SiS310SetupSRCBase(srcbase);
SiS310SetupDSTBase(dstbase);
SiS310SetupRect(width, height)
SiS310SetupSRCXY(src_x, src_y)
SiS310SetupDSTXY(dst_x, dst_y)
SiS310DoCMD
}
static void
SiS310SetupForSolidFill(int color, int rop, unsigned int planemask)
{
SiS310SetupPATFG(color)
SiS310SetupDSTRect(ivideo.video_linelength, -1)
SiS310SetupDSTColorDepth(ivideo.DstColor);
SiS310SetupROP(sisPatALUConv[rop])
SiS310SetupCMDFlag(PATFG | ivideo.SiS310_AccelDepth)
}
static void
SiS310SubsequentSolidFillRect(int x, int y, int w, int h)
{
long dstbase;
dstbase = 0;
if(y >= 2048) {
dstbase = ivideo.video_linelength * y;
y = 0;
}
SiS310SetupDSTBase(dstbase)
SiS310SetupDSTXY(x,y)
SiS310SetupRect(w,h)
SiS310SetupCMDFlag(BITBLT)
SiS310DoCMD
}
#endif
/* --------------------------------------------------------------------- */
/* The exported routines */
int sisfb_initaccel(void)
{
#ifdef SISFB_USE_SPINLOCKS
spin_lock_init(&ivideo.lockaccel);
#endif
return(0);
}
void sisfb_syncaccel(void)
{
if(sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
SiS300Sync();
#endif
} else {
#ifdef CONFIG_FB_SIS_315
SiS310Sync();
#endif
}
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) /* --------------- 2.5 --------------- */
int fbcon_sis_sync(struct fb_info *info)
{
CRITFLAGS
if(!ivideo.accel)
return 0;
if(sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
SiS300Sync();
#endif
} else {
#ifdef CONFIG_FB_SIS_315
SiS310Sync();
#endif
}
CRITEND
return 0;
}
void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
int col=0;
CRITFLAGS
TWDEBUG("Inside sis_fillrect");
if(!rect->width || !rect->height)
return;
if(!ivideo.accel) {
cfb_fillrect(info, rect);
return;
}
switch(info->var.bits_per_pixel) {
case 8: col = rect->color;
break;
case 16: col = ((u32 *)(info->pseudo_palette))[rect->color];
break;
case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];
break;
}
if(sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
CRITBEGIN
SiS300SetupForSolidFill(col, myrops[rect->rop], 0);
SiS300SubsequentSolidFillRect(rect->dx, rect->dy, rect->width, rect->height);
CRITEND
SiS300Sync();
#endif
} else {
#ifdef CONFIG_FB_SIS_315
CRITBEGIN
SiS310SetupForSolidFill(col, myrops[rect->rop], 0);
SiS310SubsequentSolidFillRect(rect->dx, rect->dy, rect->width, rect->height);
CRITEND
SiS310Sync();
#endif
}
}
void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
int xdir, ydir;
CRITFLAGS
TWDEBUG("Inside sis_copyarea");
if(!ivideo.accel) {
cfb_copyarea(info, area);
return;
}
if(!area->width || !area->height)
return;
if(area->sx < area->dx) xdir = 0;
else xdir = 1;
if(area->sy < area->dy) ydir = 0;
else ydir = 1;
if(sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
CRITBEGIN
SiS300SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
SiS300SubsequentScreenToScreenCopy(area->sx, area->sy, area->dx, area->dy, area->width, area->height);
CRITEND
SiS300Sync();
#endif
} else {
#ifdef CONFIG_FB_SIS_315
CRITBEGIN
SiS310SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
SiS310SubsequentScreenToScreenCopy(area->sx, area->sy, area->dx, area->dy, area->width, area->height);
CRITEND
SiS310Sync();
#endif
}
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) /* -------------- 2.4 --------------- */
void fbcon_sis_bmove(struct display *p, int srcy, int srcx,
int dsty, int dstx, int height, int width)
{
int xdir, ydir;
CRITFLAGS
if(!ivideo.accel) {
switch(ivideo.video_bpp) {
case 8:
#ifdef FBCON_HAS_CFB8
fbcon_cfb8_bmove(p, srcy, srcx, dsty, dstx, height, width);
#endif
break;
case 16:
#ifdef FBCON_HAS_CFB16
fbcon_cfb16_bmove(p, srcy, srcx, dsty, dstx, height, width);
#endif
break;
case 32:
#ifdef FBCON_HAS_CFB32
fbcon_cfb32_bmove(p, srcy, srcx, dsty, dstx, height, width);
#endif
break;
}
return;
}
srcx *= fontwidth(p);
srcy *= fontheight(p);
dstx *= fontwidth(p);
dsty *= fontheight(p);
width *= fontwidth(p);
height *= fontheight(p);
if(srcx < dstx) xdir = 0;
else xdir = 1;
if(srcy < dsty) ydir = 0;
else ydir = 1;
if(sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
CRITBEGIN
SiS300SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
SiS300SubsequentScreenToScreenCopy(srcx, srcy, dstx, dsty, width, height);
CRITEND
SiS300Sync();
#endif
} else {
#ifdef CONFIG_FB_SIS_315
CRITBEGIN
SiS310SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
SiS310SubsequentScreenToScreenCopy(srcx, srcy, dstx, dsty, width, height);
CRITEND
SiS310Sync();
#if 0
printk(KERN_INFO "sis_bmove sx %d sy %d dx %d dy %d w %d h %d\n",
srcx, srcy, dstx, dsty, width, height);
#endif
#endif
}
}
static void fbcon_sis_clear(struct vc_data *conp, struct display *p,
int srcy, int srcx, int height, int width, int color)
{
CRITFLAGS
srcx *= fontwidth(p);
srcy *= fontheight(p);
width *= fontwidth(p);
height *= fontheight(p);
if(sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
CRITBEGIN
SiS300SetupForSolidFill(color, 3, 0);
SiS300SubsequentSolidFillRect(srcx, srcy, width, height);
CRITEND
SiS300Sync();
#endif
} else {
#ifdef CONFIG_FB_SIS_315
CRITBEGIN
SiS310SetupForSolidFill(color, 3, 0);
SiS310SubsequentSolidFillRect(srcx, srcy, width, height);
CRITEND
SiS310Sync();
#endif
}
}
void fbcon_sis_clear8(struct vc_data *conp, struct display *p,
int srcy, int srcx, int height, int width)
{
u32 bgx;
if(!ivideo.accel) {
#ifdef FBCON_HAS_CFB8
fbcon_cfb8_clear(conp, p, srcy, srcx, height, width);
#endif
return;
}
bgx = attr_bgcol_ec(p, conp);
fbcon_sis_clear(conp, p, srcy, srcx, height, width, bgx);
}
void fbcon_sis_clear16(struct vc_data *conp, struct display *p,
int srcy, int srcx, int height, int width)
{
u32 bgx;
if(!ivideo.accel) {
#ifdef FBCON_HAS_CFB16
fbcon_cfb16_clear(conp, p, srcy, srcx, height, width);
#endif
return;
}
bgx = ((u_int16_t*)p->dispsw_data)[attr_bgcol_ec(p, conp)];
fbcon_sis_clear(conp, p, srcy, srcx, height, width, bgx);
}
void fbcon_sis_clear32(struct vc_data *conp, struct display *p,
int srcy, int srcx, int height, int width)
{
u32 bgx;
if(!ivideo.accel) {
#ifdef FBCON_HAS_CFB32
fbcon_cfb32_clear(conp, p, srcy, srcx, height, width);
#endif
return;
}
bgx = ((u_int32_t*)p->dispsw_data)[attr_bgcol_ec(p, conp)];
fbcon_sis_clear(conp, p, srcy, srcx, height, width, bgx);
}
void fbcon_sis_revc(struct display *p, int srcx, int srcy)
{
CRITFLAGS
if(!ivideo.accel) {
switch(ivideo.video_bpp) {
case 16:
#ifdef FBCON_HAS_CFB16
fbcon_cfb16_revc(p, srcx, srcy);
#endif
break;
case 32:
#ifdef FBCON_HAS_CFB32
fbcon_cfb32_revc(p, srcx, srcy);
#endif
break;
}
return;
}
srcx *= fontwidth(p);
srcy *= fontheight(p);
if(sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
CRITBEGIN
SiS300SetupForSolidFill(0, 0x0a, 0);
SiS300SubsequentSolidFillRect(srcx, srcy, fontwidth(p), fontheight(p));
CRITEND
SiS300Sync();
#endif
} else {
#ifdef CONFIG_FB_SIS_315
CRITBEGIN
SiS310SetupForSolidFill(0, 0x0a, 0);
SiS310SubsequentSolidFillRect(srcx, srcy, fontwidth(p), fontheight(p));
CRITEND
SiS310Sync();
#endif
}
}
#ifdef FBCON_HAS_CFB8
struct display_switch fbcon_sis8 = {
.setup = fbcon_cfb8_setup,
.bmove = fbcon_sis_bmove,
.clear = fbcon_sis_clear8,
.putc = fbcon_cfb8_putc,
.putcs = fbcon_cfb8_putcs,
.revc = fbcon_cfb8_revc,
.clear_margins = fbcon_cfb8_clear_margins,
.fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef FBCON_HAS_CFB16
struct display_switch fbcon_sis16 = {
.setup = fbcon_cfb16_setup,
.bmove = fbcon_sis_bmove,
.clear = fbcon_sis_clear16,
.putc = fbcon_cfb16_putc,
.putcs = fbcon_cfb16_putcs,
.revc = fbcon_sis_revc,
.clear_margins = fbcon_cfb16_clear_margins,
.fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef FBCON_HAS_CFB32
struct display_switch fbcon_sis32 = {
.setup = fbcon_cfb32_setup,
.bmove = fbcon_sis_bmove,
.clear = fbcon_sis_clear32,
.putc = fbcon_cfb32_putc,
.putcs = fbcon_cfb32_putcs,
.revc = fbcon_sis_revc,
.clear_margins = fbcon_cfb32_clear_margins,
.fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#endif /* KERNEL VERSION */
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