411 lines
11 KiB
C
411 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* SiS 300/540/630[S]/730[S],
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* SiS 315[E|PRO]/550/[M]650/651/[M]661[F|M]X/740/[M]741[GX]/330/[M]760[GX],
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* XGI V3XT/V5/V8, Z7
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* frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3
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*
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* 2D acceleration part
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*
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* Based on the XFree86/X.org driver which is
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* Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
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*
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* Author: Thomas Winischhofer <thomas@winischhofer.net>
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* (see http://www.winischhofer.net/
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* for more information and updates)
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/fb.h>
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#include <linux/ioport.h>
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#include <linux/types.h>
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#include <asm/io.h>
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#include "sis.h"
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#include "sis_accel.h"
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static const u8 sisALUConv[] =
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{
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0x00, /* dest = 0; 0, GXclear, 0 */
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0x88, /* dest &= src; DSa, GXand, 0x1 */
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0x44, /* dest = src & ~dest; SDna, GXandReverse, 0x2 */
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0xCC, /* dest = src; S, GXcopy, 0x3 */
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0x22, /* dest &= ~src; DSna, GXandInverted, 0x4 */
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0xAA, /* dest = dest; D, GXnoop, 0x5 */
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0x66, /* dest = ^src; DSx, GXxor, 0x6 */
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0xEE, /* dest |= src; DSo, GXor, 0x7 */
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0x11, /* dest = ~src & ~dest; DSon, GXnor, 0x8 */
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0x99, /* dest ^= ~src ; DSxn, GXequiv, 0x9 */
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0x55, /* dest = ~dest; Dn, GXInvert, 0xA */
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0xDD, /* dest = src|~dest ; SDno, GXorReverse, 0xB */
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0x33, /* dest = ~src; Sn, GXcopyInverted, 0xC */
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0xBB, /* dest |= ~src; DSno, GXorInverted, 0xD */
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0x77, /* dest = ~src|~dest; DSan, GXnand, 0xE */
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0xFF, /* dest = 0xFF; 1, GXset, 0xF */
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};
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/* same ROP but with Pattern as Source */
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static const u8 sisPatALUConv[] =
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{
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0x00, /* dest = 0; 0, GXclear, 0 */
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0xA0, /* dest &= src; DPa, GXand, 0x1 */
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0x50, /* dest = src & ~dest; PDna, GXandReverse, 0x2 */
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0xF0, /* dest = src; P, GXcopy, 0x3 */
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0x0A, /* dest &= ~src; DPna, GXandInverted, 0x4 */
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0xAA, /* dest = dest; D, GXnoop, 0x5 */
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0x5A, /* dest = ^src; DPx, GXxor, 0x6 */
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0xFA, /* dest |= src; DPo, GXor, 0x7 */
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0x05, /* dest = ~src & ~dest; DPon, GXnor, 0x8 */
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0xA5, /* dest ^= ~src ; DPxn, GXequiv, 0x9 */
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0x55, /* dest = ~dest; Dn, GXInvert, 0xA */
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0xF5, /* dest = src|~dest ; PDno, GXorReverse, 0xB */
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0x0F, /* dest = ~src; Pn, GXcopyInverted, 0xC */
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0xAF, /* dest |= ~src; DPno, GXorInverted, 0xD */
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0x5F, /* dest = ~src|~dest; DPan, GXnand, 0xE */
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0xFF, /* dest = 0xFF; 1, GXset, 0xF */
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};
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static const int myrops[] = {
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3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
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};
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/* 300 series ----------------------------------------------------- */
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#ifdef CONFIG_FB_SIS_300
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static void
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SiS300Sync(struct sis_video_info *ivideo)
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{
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SiS300Idle
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}
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static void
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SiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir,
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int rop, int trans_color)
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{
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SiS300SetupDSTColorDepth(ivideo->DstColor);
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SiS300SetupSRCPitch(ivideo->video_linelength)
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SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)
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if(trans_color != -1) {
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SiS300SetupROP(0x0A)
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SiS300SetupSRCTrans(trans_color)
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SiS300SetupCMDFlag(TRANSPARENT_BITBLT)
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} else {
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SiS300SetupROP(sisALUConv[rop])
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}
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if(xdir > 0) {
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SiS300SetupCMDFlag(X_INC)
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}
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if(ydir > 0) {
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SiS300SetupCMDFlag(Y_INC)
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}
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}
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static void
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SiS300SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x,
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int src_y, int dst_x, int dst_y, int width, int height)
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{
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u32 srcbase = 0, dstbase = 0;
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if(src_y >= 2048) {
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srcbase = ivideo->video_linelength * src_y;
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src_y = 0;
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}
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if(dst_y >= 2048) {
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dstbase = ivideo->video_linelength * dst_y;
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dst_y = 0;
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}
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SiS300SetupSRCBase(srcbase);
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SiS300SetupDSTBase(dstbase);
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if(!(ivideo->CommandReg & X_INC)) {
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src_x += width-1;
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dst_x += width-1;
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}
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if(!(ivideo->CommandReg & Y_INC)) {
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src_y += height-1;
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dst_y += height-1;
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}
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SiS300SetupRect(width, height)
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SiS300SetupSRCXY(src_x, src_y)
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SiS300SetupDSTXY(dst_x, dst_y)
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SiS300DoCMD
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}
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static void
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SiS300SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
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{
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SiS300SetupPATFG(color)
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SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)
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SiS300SetupDSTColorDepth(ivideo->DstColor);
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SiS300SetupROP(sisPatALUConv[rop])
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SiS300SetupCMDFlag(PATFG)
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}
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static void
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SiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
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{
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u32 dstbase = 0;
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if(y >= 2048) {
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dstbase = ivideo->video_linelength * y;
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y = 0;
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}
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SiS300SetupDSTBase(dstbase)
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SiS300SetupDSTXY(x,y)
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SiS300SetupRect(w,h)
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SiS300SetupCMDFlag(X_INC | Y_INC | BITBLT)
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SiS300DoCMD
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}
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#endif
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/* 315/330/340 series ---------------------------------------------- */
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#ifdef CONFIG_FB_SIS_315
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static void
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SiS310Sync(struct sis_video_info *ivideo)
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{
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SiS310Idle
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}
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static void
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SiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color)
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{
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SiS310SetupDSTColorDepth(ivideo->DstColor);
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SiS310SetupSRCPitch(ivideo->video_linelength)
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SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
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if(trans_color != -1) {
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SiS310SetupROP(0x0A)
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SiS310SetupSRCTrans(trans_color)
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SiS310SetupCMDFlag(TRANSPARENT_BITBLT)
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} else {
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SiS310SetupROP(sisALUConv[rop])
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/* Set command - not needed, both 0 */
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/* SiSSetupCMDFlag(BITBLT | SRCVIDEO) */
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}
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SiS310SetupCMDFlag(ivideo->SiS310_AccelDepth)
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/* The chip is smart enough to know the direction */
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}
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static void
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SiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y,
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int dst_x, int dst_y, int width, int height)
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{
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u32 srcbase = 0, dstbase = 0;
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int mymin = min(src_y, dst_y);
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int mymax = max(src_y, dst_y);
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/* Although the chip knows the direction to use
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* if the source and destination areas overlap,
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* that logic fails if we fiddle with the bitmap
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* addresses. Therefore, we check if the source
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* and destination blitting areas overlap and
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* adapt the bitmap addresses synchronously
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* if the coordinates exceed the valid range.
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* The areas do not overlap, we do our
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* normal check.
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*/
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if((mymax - mymin) < height) {
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if((src_y >= 2048) || (dst_y >= 2048)) {
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srcbase = ivideo->video_linelength * mymin;
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dstbase = ivideo->video_linelength * mymin;
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src_y -= mymin;
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dst_y -= mymin;
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}
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} else {
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if(src_y >= 2048) {
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srcbase = ivideo->video_linelength * src_y;
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src_y = 0;
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}
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if(dst_y >= 2048) {
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dstbase = ivideo->video_linelength * dst_y;
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dst_y = 0;
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}
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}
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srcbase += ivideo->video_offset;
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dstbase += ivideo->video_offset;
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SiS310SetupSRCBase(srcbase);
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SiS310SetupDSTBase(dstbase);
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SiS310SetupRect(width, height)
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SiS310SetupSRCXY(src_x, src_y)
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SiS310SetupDSTXY(dst_x, dst_y)
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SiS310DoCMD
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}
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static void
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SiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
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{
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SiS310SetupPATFG(color)
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SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
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SiS310SetupDSTColorDepth(ivideo->DstColor);
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SiS310SetupROP(sisPatALUConv[rop])
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SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth)
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}
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static void
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SiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
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{
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u32 dstbase = 0;
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if(y >= 2048) {
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dstbase = ivideo->video_linelength * y;
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y = 0;
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}
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dstbase += ivideo->video_offset;
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SiS310SetupDSTBase(dstbase)
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SiS310SetupDSTXY(x,y)
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SiS310SetupRect(w,h)
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SiS310SetupCMDFlag(BITBLT)
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SiS310DoCMD
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}
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#endif
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/* --------------------------------------------------------------------- */
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/* The exported routines */
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int sisfb_initaccel(struct sis_video_info *ivideo)
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{
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#ifdef SISFB_USE_SPINLOCKS
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spin_lock_init(&ivideo->lockaccel);
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#endif
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return 0;
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}
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void sisfb_syncaccel(struct sis_video_info *ivideo)
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{
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if(ivideo->sisvga_engine == SIS_300_VGA) {
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#ifdef CONFIG_FB_SIS_300
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SiS300Sync(ivideo);
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#endif
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} else {
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#ifdef CONFIG_FB_SIS_315
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SiS310Sync(ivideo);
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#endif
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}
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}
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int fbcon_sis_sync(struct fb_info *info)
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{
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struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
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CRITFLAGS
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if((!ivideo->accel) || (!ivideo->engineok))
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return 0;
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CRITBEGIN
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sisfb_syncaccel(ivideo);
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CRITEND
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return 0;
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}
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void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
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{
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struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
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u32 col = 0;
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u32 vxres = info->var.xres_virtual;
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u32 vyres = info->var.yres_virtual;
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int width, height;
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CRITFLAGS
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if(info->state != FBINFO_STATE_RUNNING)
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return;
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if((!ivideo->accel) || (!ivideo->engineok)) {
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cfb_fillrect(info, rect);
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return;
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}
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if(!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres)
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return;
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/* Clipping */
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width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width;
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height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height;
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switch(info->var.bits_per_pixel) {
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case 8: col = rect->color;
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break;
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case 16:
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case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];
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break;
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}
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if(ivideo->sisvga_engine == SIS_300_VGA) {
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#ifdef CONFIG_FB_SIS_300
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CRITBEGIN
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SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]);
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SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
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CRITEND
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#endif
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} else {
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#ifdef CONFIG_FB_SIS_315
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CRITBEGIN
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SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]);
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SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
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CRITEND
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#endif
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}
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sisfb_syncaccel(ivideo);
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}
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void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area)
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{
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struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
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u32 vxres = info->var.xres_virtual;
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u32 vyres = info->var.yres_virtual;
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int width = area->width;
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int height = area->height;
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CRITFLAGS
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if(info->state != FBINFO_STATE_RUNNING)
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return;
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if((!ivideo->accel) || (!ivideo->engineok)) {
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cfb_copyarea(info, area);
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return;
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}
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if(!width || !height ||
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area->sx >= vxres || area->sy >= vyres ||
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area->dx >= vxres || area->dy >= vyres)
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return;
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/* Clipping */
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if((area->sx + width) > vxres) width = vxres - area->sx;
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if((area->dx + width) > vxres) width = vxres - area->dx;
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if((area->sy + height) > vyres) height = vyres - area->sy;
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if((area->dy + height) > vyres) height = vyres - area->dy;
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if(ivideo->sisvga_engine == SIS_300_VGA) {
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#ifdef CONFIG_FB_SIS_300
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int xdir, ydir;
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if(area->sx < area->dx) xdir = 0;
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else xdir = 1;
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if(area->sy < area->dy) ydir = 0;
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else ydir = 1;
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CRITBEGIN
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SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3, -1);
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SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
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area->dx, area->dy, width, height);
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CRITEND
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#endif
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} else {
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#ifdef CONFIG_FB_SIS_315
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CRITBEGIN
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SiS310SetupForScreenToScreenCopy(ivideo, 3, -1);
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SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
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area->dx, area->dy, width, height);
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CRITEND
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#endif
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}
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sisfb_syncaccel(ivideo);
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}
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