1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 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, Z7 6 * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3 7 * 8 * 2D acceleration part 9 * 10 * Based on the XFree86/X.org driver which is 11 * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria 12 * 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 28 static 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 */ 48 static 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 68 static const int myrops[] = { 69 3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 70 }; 71 72 /* 300 series ----------------------------------------------------- */ 73 #ifdef CONFIG_FB_SIS_300 74 static void SiS300Sync(struct sis_video_info * ivideo)75 SiS300Sync(struct sis_video_info *ivideo) 76 { 77 SiS300Idle 78 } 79 80 static void SiS300SetupForScreenToScreenCopy(struct sis_video_info * ivideo,int xdir,int ydir,int rop,int trans_color)81 SiS300SetupForScreenToScreenCopy(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 } 102 103 static void SiS300SubsequentScreenToScreenCopy(struct sis_video_info * ivideo,int src_x,int src_y,int dst_x,int dst_y,int width,int height)104 SiS300SubsequentScreenToScreenCopy(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 SiS300DoCMD 133 } 134 135 static void SiS300SetupForSolidFill(struct sis_video_info * ivideo,u32 color,int rop)136 SiS300SetupForSolidFill(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 } 144 145 static void SiS300SubsequentSolidFillRect(struct sis_video_info * ivideo,int x,int y,int w,int h)146 SiS300SubsequentSolidFillRect(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 SiS300DoCMD 159 } 160 #endif 161 162 /* 315/330/340 series ---------------------------------------------- */ 163 164 #ifdef CONFIG_FB_SIS_315 165 static void SiS310Sync(struct sis_video_info * ivideo)166 SiS310Sync(struct sis_video_info *ivideo) 167 { 168 SiS310Idle 169 } 170 171 static void SiS310SetupForScreenToScreenCopy(struct sis_video_info * ivideo,int rop,int trans_color)172 SiS310SetupForScreenToScreenCopy(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 } 189 190 static void SiS310SubsequentScreenToScreenCopy(struct sis_video_info * ivideo,int src_x,int src_y,int dst_x,int dst_y,int width,int height)191 SiS310SubsequentScreenToScreenCopy(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 use 199 * if the source and destination areas overlap, 200 * that logic fails if we fiddle with the bitmap 201 * addresses. Therefore, we check if the source 202 * and destination blitting areas overlap and 203 * adapt the bitmap addresses synchronously 204 * if the coordinates exceed the valid range. 205 * The areas do not overlap, we do our 206 * 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 SiS310DoCMD 235 } 236 237 static void SiS310SetupForSolidFill(struct sis_video_info * ivideo,u32 color,int rop)238 SiS310SetupForSolidFill(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 } 246 247 static void SiS310SubsequentSolidFillRect(struct sis_video_info * ivideo,int x,int y,int w,int h)248 SiS310SubsequentSolidFillRect(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 SiS310DoCMD 262 } 263 #endif 264 265 /* --------------------------------------------------------------------- */ 266 267 /* The exported routines */ 268 sisfb_initaccel(struct sis_video_info * ivideo)269 int sisfb_initaccel(struct sis_video_info *ivideo) 270 { 271 #ifdef SISFB_USE_SPINLOCKS 272 spin_lock_init(&ivideo->lockaccel); 273 #endif 274 return 0; 275 } 276 sisfb_syncaccel(struct sis_video_info * ivideo)277 void sisfb_syncaccel(struct sis_video_info *ivideo) 278 { 279 if(ivideo->sisvga_engine == SIS_300_VGA) { 280 #ifdef CONFIG_FB_SIS_300 281 SiS300Sync(ivideo); 282 #endif 283 } else { 284 #ifdef CONFIG_FB_SIS_315 285 SiS310Sync(ivideo); 286 #endif 287 } 288 } 289 fbcon_sis_sync(struct fb_info * info)290 int fbcon_sis_sync(struct fb_info *info) 291 { 292 struct sis_video_info *ivideo = (struct sis_video_info *)info->par; 293 CRITFLAGS 294 295 if((!ivideo->accel) || (!ivideo->engineok)) 296 return 0; 297 298 CRITBEGIN 299 sisfb_syncaccel(ivideo); 300 CRITEND 301 302 return 0; 303 } 304 fbcon_sis_fillrect(struct fb_info * info,const struct fb_fillrect * rect)305 void 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 CRITFLAGS 313 314 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_300 339 CRITBEGIN 340 SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]); 341 SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height); 342 CRITEND 343 #endif 344 } else { 345 #ifdef CONFIG_FB_SIS_315 346 CRITBEGIN 347 SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]); 348 SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height); 349 CRITEND 350 #endif 351 } 352 353 sisfb_syncaccel(ivideo); 354 } 355 fbcon_sis_copyarea(struct fb_info * info,const struct fb_copyarea * area)356 void 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 CRITFLAGS 364 365 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_300 386 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 CRITBEGIN 394 SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3, -1); 395 SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy, 396 area->dx, area->dy, width, height); 397 CRITEND 398 #endif 399 } else { 400 #ifdef CONFIG_FB_SIS_315 401 CRITBEGIN 402 SiS310SetupForScreenToScreenCopy(ivideo, 3, -1); 403 SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy, 404 area->dx, area->dy, width, height); 405 CRITEND 406 #endif 407 } 408 409 sisfb_syncaccel(ivideo); 410 } 411