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/*
* XGI 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 XGI300_accel.c which is
* Copyright Xavier Ducoin <x.ducoin@lectra.com>
* Copyright 2002 by Thomas Winischhofer, Vienna, Austria
* and XGI310_accel.c 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)
*/
//#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>
#include <asm/io.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#include "vgatypes.h"
#include "vb_struct.h"
#include "XGIfb.h"
#include "XGI_accel.h"
static const int XGIALUConv[] =
{
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 XGIPatALUConv[] =
{
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 unsigned char myrops[] = {
3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
};
/* 300 series */
static void
XGI310Sync(void)
{
XGI310Idle
}
/* 310/325 series ------------------------------------------------ */
static void
XGI310SetupForScreenToScreenCopy(int xdir, int ydir, int rop,
unsigned int planemask, int trans_color)
{
XGI310SetupDSTColorDepth(xgi_video_info.DstColor);
XGI310SetupSRCPitch(xgi_video_info.video_linelength)
XGI310SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
if (trans_color != -1) {
XGI310SetupROP(0x0A)
XGI310SetupSRCTrans(trans_color)
XGI310SetupCMDFlag(TRANSPARENT_BITBLT)
} else {
XGI310SetupROP(XGIALUConv[rop])
/* Set command - not needed, both 0 */
/* XGISetupCMDFlag(BITBLT | SRCVIDEO) */
}
XGI310SetupCMDFlag(xgi_video_info.XGI310_AccelDepth)
/* TW: The 310/325 series is smart enough to know the direction */
}
static void
XGI310SubsequentScreenToScreenCopy(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 = xgi_video_info.video_linelength * mymin;
dstbase = xgi_video_info.video_linelength * mymin;
src_y -= mymin;
dst_y -= mymin;
}
} else {
if(src_y >= 2048) {
srcbase = xgi_video_info.video_linelength * src_y;
src_y = 0;
}
if(dst_y >= 2048) {
dstbase = xgi_video_info.video_linelength * dst_y;
dst_y = 0;
}
}
XGI310SetupSRCBase(srcbase);
XGI310SetupDSTBase(dstbase);
XGI310SetupRect(width, height)
XGI310SetupSRCXY(src_x, src_y)
XGI310SetupDSTXY(dst_x, dst_y)
XGI310DoCMD
}
static void
XGI310SetupForSolidFill(int color, int rop, unsigned int planemask)
{
XGI310SetupPATFG(color)
XGI310SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
XGI310SetupDSTColorDepth(xgi_video_info.DstColor);
XGI310SetupROP(XGIPatALUConv[rop])
XGI310SetupCMDFlag(PATFG | xgi_video_info.XGI310_AccelDepth)
}
static void
XGI310SubsequentSolidFillRect(int x, int y, int w, int h)
{
long dstbase;
dstbase = 0;
if(y >= 2048) {
dstbase = xgi_video_info.video_linelength * y;
y = 0;
}
XGI310SetupDSTBase(dstbase)
XGI310SetupDSTXY(x,y)
XGI310SetupRect(w,h)
XGI310SetupCMDFlag(BITBLT)
XGI310DoCMD
}
/* --------------------------------------------------------------------- */
/* The exported routines */
int XGIfb_initaccel(void)
{
#ifdef XGIFB_USE_SPINLOCKS
spin_lock_init(&xgi_video_info.lockaccel);
#endif
return(0);
}
void XGIfb_syncaccel(void)
{
XGI310Sync();
}
int fbcon_XGI_sync(struct fb_info *info)
{
if(!XGIfb_accel) return 0;
CRITFLAGS
XGI310Sync();
CRITEND
return 0;
}
void fbcon_XGI_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
int col=0;
CRITFLAGS
if(!rect->width || !rect->height)
return;
if(!XGIfb_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;
}
CRITBEGIN
XGI310SetupForSolidFill(col, myrops[rect->rop], 0);
XGI310SubsequentSolidFillRect(rect->dx, rect->dy, rect->width, rect->height);
CRITEND
XGI310Sync();
}
void fbcon_XGI_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
int xdir, ydir;
CRITFLAGS
if(!XGIfb_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;
CRITBEGIN
XGI310SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
XGI310SubsequentScreenToScreenCopy(area->sx, area->sy, area->dx, area->dy, area->width, area->height);
CRITEND
XGI310Sync();
}
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