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linux-stable/drivers/video/fbdev/sis/sis_accel.c
Thomas Gleixner 5e0f8ad07b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 27 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 7 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520170856.731149235@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:27:10 +02:00

410 lines
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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
*
* Based on the XFree86/X.org driver which is
* Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
*
* Author: Thomas Winischhofer <thomas@winischhofer.net>
* (see http://www.winischhofer.net/
* for more information and updates)
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/types.h>
#include <asm/io.h>
#include "sis.h"
#include "sis_accel.h"
static const u8 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 u8 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 */
};
static const int myrops[] = {
3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
};
/* 300 series ----------------------------------------------------- */
#ifdef CONFIG_FB_SIS_300
static void
SiS300Sync(struct sis_video_info *ivideo)
{
SiS300Idle
}
static void
SiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir,
int rop, int trans_color)
{
SiS300SetupDSTColorDepth(ivideo->DstColor);
SiS300SetupSRCPitch(ivideo->video_linelength)
SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)
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(struct sis_video_info *ivideo, int src_x,
int src_y, int dst_x, int dst_y, int width, int height)
{
u32 srcbase = 0, 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(struct sis_video_info *ivideo, u32 color, int rop)
{
SiS300SetupPATFG(color)
SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)
SiS300SetupDSTColorDepth(ivideo->DstColor);
SiS300SetupROP(sisPatALUConv[rop])
SiS300SetupCMDFlag(PATFG)
}
static void
SiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
{
u32 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
/* 315/330/340 series ---------------------------------------------- */
#ifdef CONFIG_FB_SIS_315
static void
SiS310Sync(struct sis_video_info *ivideo)
{
SiS310Idle
}
static void
SiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color)
{
SiS310SetupDSTColorDepth(ivideo->DstColor);
SiS310SetupSRCPitch(ivideo->video_linelength)
SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
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 chip is smart enough to know the direction */
}
static void
SiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y,
int dst_x, int dst_y, int width, int height)
{
u32 srcbase = 0, dstbase = 0;
int mymin = min(src_y, dst_y);
int 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;
}
}
srcbase += ivideo->video_offset;
dstbase += ivideo->video_offset;
SiS310SetupSRCBase(srcbase);
SiS310SetupDSTBase(dstbase);
SiS310SetupRect(width, height)
SiS310SetupSRCXY(src_x, src_y)
SiS310SetupDSTXY(dst_x, dst_y)
SiS310DoCMD
}
static void
SiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
{
SiS310SetupPATFG(color)
SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
SiS310SetupDSTColorDepth(ivideo->DstColor);
SiS310SetupROP(sisPatALUConv[rop])
SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth)
}
static void
SiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
{
u32 dstbase = 0;
if(y >= 2048) {
dstbase = ivideo->video_linelength * y;
y = 0;
}
dstbase += ivideo->video_offset;
SiS310SetupDSTBase(dstbase)
SiS310SetupDSTXY(x,y)
SiS310SetupRect(w,h)
SiS310SetupCMDFlag(BITBLT)
SiS310DoCMD
}
#endif
/* --------------------------------------------------------------------- */
/* The exported routines */
int sisfb_initaccel(struct sis_video_info *ivideo)
{
#ifdef SISFB_USE_SPINLOCKS
spin_lock_init(&ivideo->lockaccel);
#endif
return 0;
}
void sisfb_syncaccel(struct sis_video_info *ivideo)
{
if(ivideo->sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
SiS300Sync(ivideo);
#endif
} else {
#ifdef CONFIG_FB_SIS_315
SiS310Sync(ivideo);
#endif
}
}
int fbcon_sis_sync(struct fb_info *info)
{
struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
CRITFLAGS
if((!ivideo->accel) || (!ivideo->engineok))
return 0;
CRITBEGIN
sisfb_syncaccel(ivideo);
CRITEND
return 0;
}
void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
u32 col = 0;
u32 vxres = info->var.xres_virtual;
u32 vyres = info->var.yres_virtual;
int width, height;
CRITFLAGS
if(info->state != FBINFO_STATE_RUNNING)
return;
if((!ivideo->accel) || (!ivideo->engineok)) {
cfb_fillrect(info, rect);
return;
}
if(!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres)
return;
/* Clipping */
width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width;
height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height;
switch(info->var.bits_per_pixel) {
case 8: col = rect->color;
break;
case 16:
case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];
break;
}
if(ivideo->sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
CRITBEGIN
SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]);
SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
CRITEND
#endif
} else {
#ifdef CONFIG_FB_SIS_315
CRITBEGIN
SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]);
SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
CRITEND
#endif
}
sisfb_syncaccel(ivideo);
}
void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
u32 vxres = info->var.xres_virtual;
u32 vyres = info->var.yres_virtual;
int width = area->width;
int height = area->height;
CRITFLAGS
if(info->state != FBINFO_STATE_RUNNING)
return;
if((!ivideo->accel) || (!ivideo->engineok)) {
cfb_copyarea(info, area);
return;
}
if(!width || !height ||
area->sx >= vxres || area->sy >= vyres ||
area->dx >= vxres || area->dy >= vyres)
return;
/* Clipping */
if((area->sx + width) > vxres) width = vxres - area->sx;
if((area->dx + width) > vxres) width = vxres - area->dx;
if((area->sy + height) > vyres) height = vyres - area->sy;
if((area->dy + height) > vyres) height = vyres - area->dy;
if(ivideo->sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
int xdir, ydir;
if(area->sx < area->dx) xdir = 0;
else xdir = 1;
if(area->sy < area->dy) ydir = 0;
else ydir = 1;
CRITBEGIN
SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3, -1);
SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
area->dx, area->dy, width, height);
CRITEND
#endif
} else {
#ifdef CONFIG_FB_SIS_315
CRITBEGIN
SiS310SetupForScreenToScreenCopy(ivideo, 3, -1);
SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
area->dx, area->dy, width, height);
CRITEND
#endif
}
sisfb_syncaccel(ivideo);
}
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