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linux-2.6/drivers/staging/xgifb/XGI_accel.c
apatard@mandriva.com d7636e0b07 staging: Add framebuffer driver for XGI chipsets 
This driver handles XG20, XG21, XG40, XG42 chipsets from XGI. They're
also known as Z7,Z9,Z11 chipsets. It's based on the SiS fb driver but
has been heavily modified by XGI to support their newer chipsets.


Signed-off-by: Arnaud Patard <apatard@mandriva.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-06-04 13:38:51 -07:00

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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>
/*
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
#include <linux/XGIfb.h>
#else
#include <video/XGIfb.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 "vb_struct.h"
#include "XGIfb.h"
#include "XGI_accel.h"
extern struct video_info xgi_video_info;
extern int XGIfb_accel;
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 */
};
#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 */
#if 0
static void
XGI300Sync(void)
{
XGI300Idle
}
#endif
static void
XGI310Sync(void)
{
XGI310Idle
}
#if 0
static void
XGI300SetupForScreenToScreenCopy(int xdir, int ydir, int rop,
unsigned int planemask, int trans_color)
{
XGI300SetupDSTColorDepth(xgi_video_info.DstColor);
XGI300SetupSRCPitch(xgi_video_info.video_linelength)
XGI300SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
if(trans_color != -1) {
XGI300SetupROP(0x0A)
XGI300SetupSRCTrans(trans_color)
XGI300SetupCMDFlag(TRANSPARENT_BITBLT)
} else {
XGI300SetupROP(XGIALUConv[rop])
}
if(xdir > 0) {
XGI300SetupCMDFlag(X_INC)
}
if(ydir > 0) {
XGI300SetupCMDFlag(Y_INC)
}
}
static void
XGI300SubsequentScreenToScreenCopy(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 = 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;
}
XGI300SetupSRCBase(srcbase);
XGI300SetupDSTBase(dstbase);
if(!(xgi_video_info.CommandReg & X_INC)) {
src_x += width-1;
dst_x += width-1;
}
if(!(xgi_video_info.CommandReg & Y_INC)) {
src_y += height-1;
dst_y += height-1;
}
XGI300SetupRect(width, height)
XGI300SetupSRCXY(src_x, src_y)
XGI300SetupDSTXY(dst_x, dst_y)
XGI300DoCMD
}
static void
XGI300SetupForSolidFill(int color, int rop, unsigned int planemask)
{
XGI300SetupPATFG(color)
XGI300SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
XGI300SetupDSTColorDepth(xgi_video_info.DstColor);
XGI300SetupROP(XGIPatALUConv[rop])
XGI300SetupCMDFlag(PATFG)
}
static void
XGI300SubsequentSolidFillRect(int x, int y, int w, int h)
{
long dstbase;
dstbase = 0;
if(y >= 2048) {
dstbase = xgi_video_info.video_linelength * y;
y = 0;
}
XGI300SetupDSTBase(dstbase)
XGI300SetupDSTXY(x,y)
XGI300SetupRect(w,h)
XGI300SetupCMDFlag(X_INC | Y_INC | BITBLT)
XGI300DoCMD
}
#endif
/* 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();
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,34) /* --- KERNEL 2.5.34 and later --- */
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();
}
#endif
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,33) /* ------ KERNEL <2.5.34 ------ */
void fbcon_XGI_bmove(struct display *p, int srcy, int srcx,
int dsty, int dstx, int height, int width)
{
int xdir, ydir;
CRITFLAGS
if(!xgi_video_info.accel) {
switch(xgi_video_info.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;
CRITBEGIN
XGI310SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
XGI310SubsequentScreenToScreenCopy(srcx, srcy, dstx, dsty, width, height);
CRITEND
XGI310Sync();
#if 0
printk(KERN_INFO "XGI_bmove sx %d sy %d dx %d dy %d w %d h %d\n",
srcx, srcy, dstx, dsty, width, height);
#endif
}
static void fbcon_XGI_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);
CRITBEGIN
XGI310SetupForSolidFill(color, 3, 0);
XGI310SubsequentSolidFillRect(srcx, srcy, width, height);
CRITEND
XGI310Sync();
}
void fbcon_XGI_clear8(struct vc_data *conp, struct display *p,
int srcy, int srcx, int height, int width)
{
u32 bgx;
if(!xgi_video_info.accel) {
#ifdef FBCON_HAS_CFB8
fbcon_cfb8_clear(conp, p, srcy, srcx, height, width);
#endif
return;
}
bgx = attr_bgcol_ec(p, conp);
fbcon_XGI_clear(conp, p, srcy, srcx, height, width, bgx);
}
void fbcon_XGI_clear16(struct vc_data *conp, struct display *p,
int srcy, int srcx, int height, int width)
{
u32 bgx;
if(!xgi_video_info.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_XGI_clear(conp, p, srcy, srcx, height, width, bgx);
}
void fbcon_XGI_clear32(struct vc_data *conp, struct display *p,
int srcy, int srcx, int height, int width)
{
u32 bgx;
if(!xgi_video_info.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_XGI_clear(conp, p, srcy, srcx, height, width, bgx);
}
void fbcon_XGI_revc(struct display *p, int srcx, int srcy)
{
CRITFLAGS
if(!xgi_video_info.accel) {
switch(xgi_video_info.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);
CRITBEGIN
XGI310SetupForSolidFill(0, 0x0a, 0);
XGI310SubsequentSolidFillRect(srcx, srcy, fontwidth(p), fontheight(p));
CRITEND
XGI310Sync();
}
#ifdef FBCON_HAS_CFB8
struct display_switch fbcon_XGI8 = {
setup: fbcon_cfb8_setup,
bmove: fbcon_XGI_bmove,
clear: fbcon_XGI_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_XGI16 = {
setup: fbcon_cfb16_setup,
bmove: fbcon_XGI_bmove,
clear: fbcon_XGI_clear16,
putc: fbcon_cfb16_putc,
putcs: fbcon_cfb16_putcs,
revc: fbcon_XGI_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_XGI32 = {
setup: fbcon_cfb32_setup,
bmove: fbcon_XGI_bmove,
clear: fbcon_XGI_clear32,
putc: fbcon_cfb32_putc,
putcs: fbcon_cfb32_putcs,
revc: fbcon_XGI_revc,
clear_margins: fbcon_cfb32_clear_margins,
fontwidthmask: FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#endif /* KERNEL VERSION */
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