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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * SiS 300/540/630[S]/730[S],4 * SiS 315[E|PRO]/550/[M]650/651/[M]661[F|M]X/740/[M]741[GX]/330/[M]760[GX],5 * XGI V3XT/V5/V8, Z76 * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.37 *8 * 2D acceleration part9 *10 * Based on the XFree86/X.org driver which is11 * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria12 *13 * Author: Thomas Winischhofer <thomas@winischhofer.net>14 * (see http://www.winischhofer.net/15 * for more information and updates)16 */17 18#include <linux/module.h>19#include <linux/kernel.h>20#include <linux/fb.h>21#include <linux/ioport.h>22#include <linux/types.h>23#include <asm/io.h>24 25#include "sis.h"26#include "sis_accel.h"27 28static const u8 sisALUConv[] =29{30 0x00, /* dest = 0; 0, GXclear, 0 */31 0x88, /* dest &= src; DSa, GXand, 0x1 */32 0x44, /* dest = src & ~dest; SDna, GXandReverse, 0x2 */33 0xCC, /* dest = src; S, GXcopy, 0x3 */34 0x22, /* dest &= ~src; DSna, GXandInverted, 0x4 */35 0xAA, /* dest = dest; D, GXnoop, 0x5 */36 0x66, /* dest = ^src; DSx, GXxor, 0x6 */37 0xEE, /* dest |= src; DSo, GXor, 0x7 */38 0x11, /* dest = ~src & ~dest; DSon, GXnor, 0x8 */39 0x99, /* dest ^= ~src ; DSxn, GXequiv, 0x9 */40 0x55, /* dest = ~dest; Dn, GXInvert, 0xA */41 0xDD, /* dest = src|~dest ; SDno, GXorReverse, 0xB */42 0x33, /* dest = ~src; Sn, GXcopyInverted, 0xC */43 0xBB, /* dest |= ~src; DSno, GXorInverted, 0xD */44 0x77, /* dest = ~src|~dest; DSan, GXnand, 0xE */45 0xFF, /* dest = 0xFF; 1, GXset, 0xF */46};47/* same ROP but with Pattern as Source */48static const u8 sisPatALUConv[] =49{50 0x00, /* dest = 0; 0, GXclear, 0 */51 0xA0, /* dest &= src; DPa, GXand, 0x1 */52 0x50, /* dest = src & ~dest; PDna, GXandReverse, 0x2 */53 0xF0, /* dest = src; P, GXcopy, 0x3 */54 0x0A, /* dest &= ~src; DPna, GXandInverted, 0x4 */55 0xAA, /* dest = dest; D, GXnoop, 0x5 */56 0x5A, /* dest = ^src; DPx, GXxor, 0x6 */57 0xFA, /* dest |= src; DPo, GXor, 0x7 */58 0x05, /* dest = ~src & ~dest; DPon, GXnor, 0x8 */59 0xA5, /* dest ^= ~src ; DPxn, GXequiv, 0x9 */60 0x55, /* dest = ~dest; Dn, GXInvert, 0xA */61 0xF5, /* dest = src|~dest ; PDno, GXorReverse, 0xB */62 0x0F, /* dest = ~src; Pn, GXcopyInverted, 0xC */63 0xAF, /* dest |= ~src; DPno, GXorInverted, 0xD */64 0x5F, /* dest = ~src|~dest; DPan, GXnand, 0xE */65 0xFF, /* dest = 0xFF; 1, GXset, 0xF */66};67 68static const int myrops[] = {69 3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 370};71 72/* 300 series ----------------------------------------------------- */73#ifdef CONFIG_FB_SIS_30074static void75SiS300Sync(struct sis_video_info *ivideo)76{77 SiS300Idle78}79 80static void81SiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir,82 int rop, int trans_color)83{84 SiS300SetupDSTColorDepth(ivideo->DstColor);85 SiS300SetupSRCPitch(ivideo->video_linelength)86 SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)87 88 if(trans_color != -1) {89 SiS300SetupROP(0x0A)90 SiS300SetupSRCTrans(trans_color)91 SiS300SetupCMDFlag(TRANSPARENT_BITBLT)92 } else {93 SiS300SetupROP(sisALUConv[rop])94 }95 if(xdir > 0) {96 SiS300SetupCMDFlag(X_INC)97 }98 if(ydir > 0) {99 SiS300SetupCMDFlag(Y_INC)100 }101}102 103static void104SiS300SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x,105 int src_y, int dst_x, int dst_y, int width, int height)106{107 u32 srcbase = 0, dstbase = 0;108 109 if(src_y >= 2048) {110 srcbase = ivideo->video_linelength * src_y;111 src_y = 0;112 }113 if(dst_y >= 2048) {114 dstbase = ivideo->video_linelength * dst_y;115 dst_y = 0;116 }117 118 SiS300SetupSRCBase(srcbase);119 SiS300SetupDSTBase(dstbase);120 121 if(!(ivideo->CommandReg & X_INC)) {122 src_x += width-1;123 dst_x += width-1;124 }125 if(!(ivideo->CommandReg & Y_INC)) {126 src_y += height-1;127 dst_y += height-1;128 }129 SiS300SetupRect(width, height)130 SiS300SetupSRCXY(src_x, src_y)131 SiS300SetupDSTXY(dst_x, dst_y)132 SiS300DoCMD133}134 135static void136SiS300SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)137{138 SiS300SetupPATFG(color)139 SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)140 SiS300SetupDSTColorDepth(ivideo->DstColor);141 SiS300SetupROP(sisPatALUConv[rop])142 SiS300SetupCMDFlag(PATFG)143}144 145static void146SiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)147{148 u32 dstbase = 0;149 150 if(y >= 2048) {151 dstbase = ivideo->video_linelength * y;152 y = 0;153 }154 SiS300SetupDSTBase(dstbase)155 SiS300SetupDSTXY(x,y)156 SiS300SetupRect(w,h)157 SiS300SetupCMDFlag(X_INC | Y_INC | BITBLT)158 SiS300DoCMD159}160#endif161 162/* 315/330/340 series ---------------------------------------------- */163 164#ifdef CONFIG_FB_SIS_315165static void166SiS310Sync(struct sis_video_info *ivideo)167{168 SiS310Idle169}170 171static void172SiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color)173{174 SiS310SetupDSTColorDepth(ivideo->DstColor);175 SiS310SetupSRCPitch(ivideo->video_linelength)176 SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)177 if(trans_color != -1) {178 SiS310SetupROP(0x0A)179 SiS310SetupSRCTrans(trans_color)180 SiS310SetupCMDFlag(TRANSPARENT_BITBLT)181 } else {182 SiS310SetupROP(sisALUConv[rop])183 /* Set command - not needed, both 0 */184 /* SiSSetupCMDFlag(BITBLT | SRCVIDEO) */185 }186 SiS310SetupCMDFlag(ivideo->SiS310_AccelDepth)187 /* The chip is smart enough to know the direction */188}189 190static void191SiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y,192 int dst_x, int dst_y, int width, int height)193{194 u32 srcbase = 0, dstbase = 0;195 int mymin = min(src_y, dst_y);196 int mymax = max(src_y, dst_y);197 198 /* Although the chip knows the direction to use199 * if the source and destination areas overlap,200 * that logic fails if we fiddle with the bitmap201 * addresses. Therefore, we check if the source202 * and destination blitting areas overlap and203 * adapt the bitmap addresses synchronously204 * if the coordinates exceed the valid range.205 * The areas do not overlap, we do our206 * normal check.207 */208 if((mymax - mymin) < height) {209 if((src_y >= 2048) || (dst_y >= 2048)) {210 srcbase = ivideo->video_linelength * mymin;211 dstbase = ivideo->video_linelength * mymin;212 src_y -= mymin;213 dst_y -= mymin;214 }215 } else {216 if(src_y >= 2048) {217 srcbase = ivideo->video_linelength * src_y;218 src_y = 0;219 }220 if(dst_y >= 2048) {221 dstbase = ivideo->video_linelength * dst_y;222 dst_y = 0;223 }224 }225 226 srcbase += ivideo->video_offset;227 dstbase += ivideo->video_offset;228 229 SiS310SetupSRCBase(srcbase);230 SiS310SetupDSTBase(dstbase);231 SiS310SetupRect(width, height)232 SiS310SetupSRCXY(src_x, src_y)233 SiS310SetupDSTXY(dst_x, dst_y)234 SiS310DoCMD235}236 237static void238SiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)239{240 SiS310SetupPATFG(color)241 SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)242 SiS310SetupDSTColorDepth(ivideo->DstColor);243 SiS310SetupROP(sisPatALUConv[rop])244 SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth)245}246 247static void248SiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)249{250 u32 dstbase = 0;251 252 if(y >= 2048) {253 dstbase = ivideo->video_linelength * y;254 y = 0;255 }256 dstbase += ivideo->video_offset;257 SiS310SetupDSTBase(dstbase)258 SiS310SetupDSTXY(x,y)259 SiS310SetupRect(w,h)260 SiS310SetupCMDFlag(BITBLT)261 SiS310DoCMD262}263#endif264 265/* --------------------------------------------------------------------- */266 267/* The exported routines */268 269int sisfb_initaccel(struct sis_video_info *ivideo)270{271#ifdef SISFB_USE_SPINLOCKS272 spin_lock_init(&ivideo->lockaccel);273#endif274 return 0;275}276 277void sisfb_syncaccel(struct sis_video_info *ivideo)278{279 if(ivideo->sisvga_engine == SIS_300_VGA) {280#ifdef CONFIG_FB_SIS_300281 SiS300Sync(ivideo);282#endif283 } else {284#ifdef CONFIG_FB_SIS_315285 SiS310Sync(ivideo);286#endif287 }288}289 290int fbcon_sis_sync(struct fb_info *info)291{292 struct sis_video_info *ivideo = (struct sis_video_info *)info->par;293 CRITFLAGS294 295 if((!ivideo->accel) || (!ivideo->engineok))296 return 0;297 298 CRITBEGIN299 sisfb_syncaccel(ivideo);300 CRITEND301 302 return 0;303}304 305void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect)306{307 struct sis_video_info *ivideo = (struct sis_video_info *)info->par;308 u32 col = 0;309 u32 vxres = info->var.xres_virtual;310 u32 vyres = info->var.yres_virtual;311 int width, height;312 CRITFLAGS313 314 if(info->state != FBINFO_STATE_RUNNING)315 return;316 317 if((!ivideo->accel) || (!ivideo->engineok)) {318 cfb_fillrect(info, rect);319 return;320 }321 322 if(!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres)323 return;324 325 /* Clipping */326 width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width;327 height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height;328 329 switch(info->var.bits_per_pixel) {330 case 8: col = rect->color;331 break;332 case 16:333 case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];334 break;335 }336 337 if(ivideo->sisvga_engine == SIS_300_VGA) {338#ifdef CONFIG_FB_SIS_300339 CRITBEGIN340 SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]);341 SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);342 CRITEND343#endif344 } else {345#ifdef CONFIG_FB_SIS_315346 CRITBEGIN347 SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]);348 SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);349 CRITEND350#endif351 }352 353 sisfb_syncaccel(ivideo);354}355 356void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area)357{358 struct sis_video_info *ivideo = (struct sis_video_info *)info->par;359 u32 vxres = info->var.xres_virtual;360 u32 vyres = info->var.yres_virtual;361 int width = area->width;362 int height = area->height;363 CRITFLAGS364 365 if(info->state != FBINFO_STATE_RUNNING)366 return;367 368 if((!ivideo->accel) || (!ivideo->engineok)) {369 cfb_copyarea(info, area);370 return;371 }372 373 if(!width || !height ||374 area->sx >= vxres || area->sy >= vyres ||375 area->dx >= vxres || area->dy >= vyres)376 return;377 378 /* Clipping */379 if((area->sx + width) > vxres) width = vxres - area->sx;380 if((area->dx + width) > vxres) width = vxres - area->dx;381 if((area->sy + height) > vyres) height = vyres - area->sy;382 if((area->dy + height) > vyres) height = vyres - area->dy;383 384 if(ivideo->sisvga_engine == SIS_300_VGA) {385#ifdef CONFIG_FB_SIS_300386 int xdir, ydir;387 388 if(area->sx < area->dx) xdir = 0;389 else xdir = 1;390 if(area->sy < area->dy) ydir = 0;391 else ydir = 1;392 393 CRITBEGIN394 SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3, -1);395 SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,396 area->dx, area->dy, width, height);397 CRITEND398#endif399 } else {400#ifdef CONFIG_FB_SIS_315401 CRITBEGIN402 SiS310SetupForScreenToScreenCopy(ivideo, 3, -1);403 SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,404 area->dx, area->dy, width, height);405 CRITEND406#endif407 }408 409 sisfb_syncaccel(ivideo);410}411