1 /* 2 * linux/drivers/video/pm3fb.c -- 3DLabs Permedia3 frame buffer device 3 * 4 * Copyright (C) 2001 Romain Dolbeau <romain@dolbeau.org>. 5 * 6 * Ported to 2.6 kernel on 1 May 2007 by Krzysztof Helt <krzysztof.h1@wp.pl> 7 * based on pm2fb.c 8 * 9 * Based on code written by: 10 * Sven Luther, <luther@dpt-info.u-strasbg.fr> 11 * Alan Hourihane, <alanh@fairlite.demon.co.uk> 12 * Russell King, <rmk@arm.linux.org.uk> 13 * Based on linux/drivers/video/skeletonfb.c: 14 * Copyright (C) 1997 Geert Uytterhoeven 15 * Based on linux/driver/video/pm2fb.c: 16 * Copyright (C) 1998-1999 Ilario Nardinocchi (nardinoc@CS.UniBO.IT) 17 * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com) 18 * 19 * This file is subject to the terms and conditions of the GNU General Public 20 * License. See the file COPYING in the main directory of this archive for 21 * more details. 22 * 23 */ 24 25 #include <linux/module.h> 26 #include <linux/kernel.h> 27 #include <linux/errno.h> 28 #include <linux/string.h> 29 #include <linux/mm.h> 30 #include <linux/slab.h> 31 #include <linux/delay.h> 32 #include <linux/fb.h> 33 #include <linux/init.h> 34 #include <linux/pci.h> 35 #ifdef CONFIG_MTRR 36 #include <asm/mtrr.h> 37 #endif 38 39 #include <video/pm3fb.h> 40 41 #if !defined(CONFIG_PCI) 42 #error "Only generic PCI cards supported." 43 #endif 44 45 #undef PM3FB_MASTER_DEBUG 46 #ifdef PM3FB_MASTER_DEBUG 47 #define DPRINTK(a, b...) \ 48 printk(KERN_DEBUG "pm3fb: %s: " a, __func__ , ## b) 49 #else 50 #define DPRINTK(a, b...) 51 #endif 52 53 #define PM3_PIXMAP_SIZE (2048 * 4) 54 55 /* 56 * Driver data 57 */ 58 static int hwcursor = 1; 59 static char *mode_option; 60 static bool noaccel; 61 62 /* mtrr option */ 63 #ifdef CONFIG_MTRR 64 static bool nomtrr; 65 #endif 66 67 /* 68 * This structure defines the hardware state of the graphics card. Normally 69 * you place this in a header file in linux/include/video. This file usually 70 * also includes register information. That allows other driver subsystems 71 * and userland applications the ability to use the same header file to 72 * avoid duplicate work and easy porting of software. 73 */ 74 struct pm3_par { 75 unsigned char __iomem *v_regs;/* virtual address of p_regs */ 76 u32 video; /* video flags before blanking */ 77 u32 base; /* screen base in 128 bits unit */ 78 u32 palette[16]; 79 int mtrr_handle; 80 }; 81 82 /* 83 * Here we define the default structs fb_fix_screeninfo and fb_var_screeninfo 84 * if we don't use modedb. If we do use modedb see pm3fb_init how to use it 85 * to get a fb_var_screeninfo. Otherwise define a default var as well. 86 */ 87 static struct fb_fix_screeninfo pm3fb_fix = { 88 .id = "Permedia3", 89 .type = FB_TYPE_PACKED_PIXELS, 90 .visual = FB_VISUAL_PSEUDOCOLOR, 91 .xpanstep = 1, 92 .ypanstep = 1, 93 .ywrapstep = 0, 94 .accel = FB_ACCEL_3DLABS_PERMEDIA3, 95 }; 96 97 /* 98 * Utility functions 99 */ 100 101 static inline u32 PM3_READ_REG(struct pm3_par *par, s32 off) 102 { 103 return fb_readl(par->v_regs + off); 104 } 105 106 static inline void PM3_WRITE_REG(struct pm3_par *par, s32 off, u32 v) 107 { 108 fb_writel(v, par->v_regs + off); 109 } 110 111 static inline void PM3_WAIT(struct pm3_par *par, u32 n) 112 { 113 while (PM3_READ_REG(par, PM3InFIFOSpace) < n) 114 cpu_relax(); 115 } 116 117 static inline void PM3_WRITE_DAC_REG(struct pm3_par *par, unsigned r, u8 v) 118 { 119 PM3_WAIT(par, 3); 120 PM3_WRITE_REG(par, PM3RD_IndexHigh, (r >> 8) & 0xff); 121 PM3_WRITE_REG(par, PM3RD_IndexLow, r & 0xff); 122 wmb(); 123 PM3_WRITE_REG(par, PM3RD_IndexedData, v); 124 wmb(); 125 } 126 127 static inline void pm3fb_set_color(struct pm3_par *par, unsigned char regno, 128 unsigned char r, unsigned char g, unsigned char b) 129 { 130 PM3_WAIT(par, 4); 131 PM3_WRITE_REG(par, PM3RD_PaletteWriteAddress, regno); 132 wmb(); 133 PM3_WRITE_REG(par, PM3RD_PaletteData, r); 134 wmb(); 135 PM3_WRITE_REG(par, PM3RD_PaletteData, g); 136 wmb(); 137 PM3_WRITE_REG(par, PM3RD_PaletteData, b); 138 wmb(); 139 } 140 141 static void pm3fb_clear_colormap(struct pm3_par *par, 142 unsigned char r, unsigned char g, unsigned char b) 143 { 144 int i; 145 146 for (i = 0; i < 256 ; i++) 147 pm3fb_set_color(par, i, r, g, b); 148 149 } 150 151 /* Calculating various clock parameters */ 152 static void pm3fb_calculate_clock(unsigned long reqclock, 153 unsigned char *prescale, 154 unsigned char *feedback, 155 unsigned char *postscale) 156 { 157 int f, pre, post; 158 unsigned long freq; 159 long freqerr = 1000; 160 long currerr; 161 162 for (f = 1; f < 256; f++) { 163 for (pre = 1; pre < 256; pre++) { 164 for (post = 0; post < 5; post++) { 165 freq = ((2*PM3_REF_CLOCK * f) >> post) / pre; 166 currerr = (reqclock > freq) 167 ? reqclock - freq 168 : freq - reqclock; 169 if (currerr < freqerr) { 170 freqerr = currerr; 171 *feedback = f; 172 *prescale = pre; 173 *postscale = post; 174 } 175 } 176 } 177 } 178 } 179 180 static inline int pm3fb_depth(const struct fb_var_screeninfo *var) 181 { 182 if (var->bits_per_pixel == 16) 183 return var->red.length + var->green.length 184 + var->blue.length; 185 186 return var->bits_per_pixel; 187 } 188 189 static inline int pm3fb_shift_bpp(unsigned bpp, int v) 190 { 191 switch (bpp) { 192 case 8: 193 return (v >> 4); 194 case 16: 195 return (v >> 3); 196 case 32: 197 return (v >> 2); 198 } 199 DPRINTK("Unsupported depth %u\n", bpp); 200 return 0; 201 } 202 203 /* acceleration */ 204 static int pm3fb_sync(struct fb_info *info) 205 { 206 struct pm3_par *par = info->par; 207 208 PM3_WAIT(par, 2); 209 PM3_WRITE_REG(par, PM3FilterMode, PM3FilterModeSync); 210 PM3_WRITE_REG(par, PM3Sync, 0); 211 mb(); 212 do { 213 while ((PM3_READ_REG(par, PM3OutFIFOWords)) == 0) 214 cpu_relax(); 215 } while ((PM3_READ_REG(par, PM3OutputFifo)) != PM3Sync_Tag); 216 217 return 0; 218 } 219 220 static void pm3fb_init_engine(struct fb_info *info) 221 { 222 struct pm3_par *par = info->par; 223 const u32 width = (info->var.xres_virtual + 7) & ~7; 224 225 PM3_WAIT(par, 50); 226 PM3_WRITE_REG(par, PM3FilterMode, PM3FilterModeSync); 227 PM3_WRITE_REG(par, PM3StatisticMode, 0x0); 228 PM3_WRITE_REG(par, PM3DeltaMode, 0x0); 229 PM3_WRITE_REG(par, PM3RasterizerMode, 0x0); 230 PM3_WRITE_REG(par, PM3ScissorMode, 0x0); 231 PM3_WRITE_REG(par, PM3LineStippleMode, 0x0); 232 PM3_WRITE_REG(par, PM3AreaStippleMode, 0x0); 233 PM3_WRITE_REG(par, PM3GIDMode, 0x0); 234 PM3_WRITE_REG(par, PM3DepthMode, 0x0); 235 PM3_WRITE_REG(par, PM3StencilMode, 0x0); 236 PM3_WRITE_REG(par, PM3StencilData, 0x0); 237 PM3_WRITE_REG(par, PM3ColorDDAMode, 0x0); 238 PM3_WRITE_REG(par, PM3TextureCoordMode, 0x0); 239 PM3_WRITE_REG(par, PM3TextureIndexMode0, 0x0); 240 PM3_WRITE_REG(par, PM3TextureIndexMode1, 0x0); 241 PM3_WRITE_REG(par, PM3TextureReadMode, 0x0); 242 PM3_WRITE_REG(par, PM3LUTMode, 0x0); 243 PM3_WRITE_REG(par, PM3TextureFilterMode, 0x0); 244 PM3_WRITE_REG(par, PM3TextureCompositeMode, 0x0); 245 PM3_WRITE_REG(par, PM3TextureApplicationMode, 0x0); 246 PM3_WRITE_REG(par, PM3TextureCompositeColorMode1, 0x0); 247 PM3_WRITE_REG(par, PM3TextureCompositeAlphaMode1, 0x0); 248 PM3_WRITE_REG(par, PM3TextureCompositeColorMode0, 0x0); 249 PM3_WRITE_REG(par, PM3TextureCompositeAlphaMode0, 0x0); 250 PM3_WRITE_REG(par, PM3FogMode, 0x0); 251 PM3_WRITE_REG(par, PM3ChromaTestMode, 0x0); 252 PM3_WRITE_REG(par, PM3AlphaTestMode, 0x0); 253 PM3_WRITE_REG(par, PM3AntialiasMode, 0x0); 254 PM3_WRITE_REG(par, PM3YUVMode, 0x0); 255 PM3_WRITE_REG(par, PM3AlphaBlendColorMode, 0x0); 256 PM3_WRITE_REG(par, PM3AlphaBlendAlphaMode, 0x0); 257 PM3_WRITE_REG(par, PM3DitherMode, 0x0); 258 PM3_WRITE_REG(par, PM3LogicalOpMode, 0x0); 259 PM3_WRITE_REG(par, PM3RouterMode, 0x0); 260 PM3_WRITE_REG(par, PM3Window, 0x0); 261 262 PM3_WRITE_REG(par, PM3Config2D, 0x0); 263 264 PM3_WRITE_REG(par, PM3SpanColorMask, 0xffffffff); 265 266 PM3_WRITE_REG(par, PM3XBias, 0x0); 267 PM3_WRITE_REG(par, PM3YBias, 0x0); 268 PM3_WRITE_REG(par, PM3DeltaControl, 0x0); 269 270 PM3_WRITE_REG(par, PM3BitMaskPattern, 0xffffffff); 271 272 PM3_WRITE_REG(par, PM3FBDestReadEnables, 273 PM3FBDestReadEnables_E(0xff) | 274 PM3FBDestReadEnables_R(0xff) | 275 PM3FBDestReadEnables_ReferenceAlpha(0xff)); 276 PM3_WRITE_REG(par, PM3FBDestReadBufferAddr0, 0x0); 277 PM3_WRITE_REG(par, PM3FBDestReadBufferOffset0, 0x0); 278 PM3_WRITE_REG(par, PM3FBDestReadBufferWidth0, 279 PM3FBDestReadBufferWidth_Width(width)); 280 281 PM3_WRITE_REG(par, PM3FBDestReadMode, 282 PM3FBDestReadMode_ReadEnable | 283 PM3FBDestReadMode_Enable0); 284 PM3_WRITE_REG(par, PM3FBSourceReadBufferAddr, 0x0); 285 PM3_WRITE_REG(par, PM3FBSourceReadBufferOffset, 0x0); 286 PM3_WRITE_REG(par, PM3FBSourceReadBufferWidth, 287 PM3FBSourceReadBufferWidth_Width(width)); 288 PM3_WRITE_REG(par, PM3FBSourceReadMode, 289 PM3FBSourceReadMode_Blocking | 290 PM3FBSourceReadMode_ReadEnable); 291 292 PM3_WAIT(par, 2); 293 { 294 /* invert bits in bitmask */ 295 unsigned long rm = 1 | (3 << 7); 296 switch (info->var.bits_per_pixel) { 297 case 8: 298 PM3_WRITE_REG(par, PM3PixelSize, 299 PM3PixelSize_GLOBAL_8BIT); 300 #ifdef __BIG_ENDIAN 301 rm |= 3 << 15; 302 #endif 303 break; 304 case 16: 305 PM3_WRITE_REG(par, PM3PixelSize, 306 PM3PixelSize_GLOBAL_16BIT); 307 #ifdef __BIG_ENDIAN 308 rm |= 2 << 15; 309 #endif 310 break; 311 case 32: 312 PM3_WRITE_REG(par, PM3PixelSize, 313 PM3PixelSize_GLOBAL_32BIT); 314 break; 315 default: 316 DPRINTK(1, "Unsupported depth %d\n", 317 info->var.bits_per_pixel); 318 break; 319 } 320 PM3_WRITE_REG(par, PM3RasterizerMode, rm); 321 } 322 323 PM3_WAIT(par, 20); 324 PM3_WRITE_REG(par, PM3FBSoftwareWriteMask, 0xffffffff); 325 PM3_WRITE_REG(par, PM3FBHardwareWriteMask, 0xffffffff); 326 PM3_WRITE_REG(par, PM3FBWriteMode, 327 PM3FBWriteMode_WriteEnable | 328 PM3FBWriteMode_OpaqueSpan | 329 PM3FBWriteMode_Enable0); 330 PM3_WRITE_REG(par, PM3FBWriteBufferAddr0, 0x0); 331 PM3_WRITE_REG(par, PM3FBWriteBufferOffset0, 0x0); 332 PM3_WRITE_REG(par, PM3FBWriteBufferWidth0, 333 PM3FBWriteBufferWidth_Width(width)); 334 335 PM3_WRITE_REG(par, PM3SizeOfFramebuffer, 0x0); 336 { 337 /* size in lines of FB */ 338 unsigned long sofb = info->screen_size / 339 info->fix.line_length; 340 if (sofb > 4095) 341 PM3_WRITE_REG(par, PM3SizeOfFramebuffer, 4095); 342 else 343 PM3_WRITE_REG(par, PM3SizeOfFramebuffer, sofb); 344 345 switch (info->var.bits_per_pixel) { 346 case 8: 347 PM3_WRITE_REG(par, PM3DitherMode, 348 (1 << 10) | (2 << 3)); 349 break; 350 case 16: 351 PM3_WRITE_REG(par, PM3DitherMode, 352 (1 << 10) | (1 << 3)); 353 break; 354 case 32: 355 PM3_WRITE_REG(par, PM3DitherMode, 356 (1 << 10) | (0 << 3)); 357 break; 358 default: 359 DPRINTK(1, "Unsupported depth %d\n", 360 info->current_par->depth); 361 break; 362 } 363 } 364 365 PM3_WRITE_REG(par, PM3dXDom, 0x0); 366 PM3_WRITE_REG(par, PM3dXSub, 0x0); 367 PM3_WRITE_REG(par, PM3dY, 1 << 16); 368 PM3_WRITE_REG(par, PM3StartXDom, 0x0); 369 PM3_WRITE_REG(par, PM3StartXSub, 0x0); 370 PM3_WRITE_REG(par, PM3StartY, 0x0); 371 PM3_WRITE_REG(par, PM3Count, 0x0); 372 373 /* Disable LocalBuffer. better safe than sorry */ 374 PM3_WRITE_REG(par, PM3LBDestReadMode, 0x0); 375 PM3_WRITE_REG(par, PM3LBDestReadEnables, 0x0); 376 PM3_WRITE_REG(par, PM3LBSourceReadMode, 0x0); 377 PM3_WRITE_REG(par, PM3LBWriteMode, 0x0); 378 379 pm3fb_sync(info); 380 } 381 382 static void pm3fb_fillrect(struct fb_info *info, 383 const struct fb_fillrect *region) 384 { 385 struct pm3_par *par = info->par; 386 struct fb_fillrect modded; 387 int vxres, vyres; 388 int rop; 389 u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ? 390 ((u32 *)info->pseudo_palette)[region->color] : region->color; 391 392 if (info->state != FBINFO_STATE_RUNNING) 393 return; 394 if (info->flags & FBINFO_HWACCEL_DISABLED) { 395 cfb_fillrect(info, region); 396 return; 397 } 398 if (region->rop == ROP_COPY ) 399 rop = PM3Config2D_ForegroundROP(0x3); /* GXcopy */ 400 else 401 rop = PM3Config2D_ForegroundROP(0x6) | /* GXxor */ 402 PM3Config2D_FBDestReadEnable; 403 404 vxres = info->var.xres_virtual; 405 vyres = info->var.yres_virtual; 406 407 memcpy(&modded, region, sizeof(struct fb_fillrect)); 408 409 if (!modded.width || !modded.height || 410 modded.dx >= vxres || modded.dy >= vyres) 411 return; 412 413 if (modded.dx + modded.width > vxres) 414 modded.width = vxres - modded.dx; 415 if (modded.dy + modded.height > vyres) 416 modded.height = vyres - modded.dy; 417 418 if (info->var.bits_per_pixel == 8) 419 color |= color << 8; 420 if (info->var.bits_per_pixel <= 16) 421 color |= color << 16; 422 423 PM3_WAIT(par, 4); 424 /* ROP Ox3 is GXcopy */ 425 PM3_WRITE_REG(par, PM3Config2D, 426 PM3Config2D_UseConstantSource | 427 PM3Config2D_ForegroundROPEnable | 428 rop | 429 PM3Config2D_FBWriteEnable); 430 431 PM3_WRITE_REG(par, PM3ForegroundColor, color); 432 433 PM3_WRITE_REG(par, PM3RectanglePosition, 434 PM3RectanglePosition_XOffset(modded.dx) | 435 PM3RectanglePosition_YOffset(modded.dy)); 436 437 PM3_WRITE_REG(par, PM3Render2D, 438 PM3Render2D_XPositive | 439 PM3Render2D_YPositive | 440 PM3Render2D_Operation_Normal | 441 PM3Render2D_SpanOperation | 442 PM3Render2D_Width(modded.width) | 443 PM3Render2D_Height(modded.height)); 444 } 445 446 static void pm3fb_copyarea(struct fb_info *info, 447 const struct fb_copyarea *area) 448 { 449 struct pm3_par *par = info->par; 450 struct fb_copyarea modded; 451 u32 vxres, vyres; 452 int x_align, o_x, o_y; 453 454 if (info->state != FBINFO_STATE_RUNNING) 455 return; 456 if (info->flags & FBINFO_HWACCEL_DISABLED) { 457 cfb_copyarea(info, area); 458 return; 459 } 460 461 memcpy(&modded, area, sizeof(struct fb_copyarea)); 462 463 vxres = info->var.xres_virtual; 464 vyres = info->var.yres_virtual; 465 466 if (!modded.width || !modded.height || 467 modded.sx >= vxres || modded.sy >= vyres || 468 modded.dx >= vxres || modded.dy >= vyres) 469 return; 470 471 if (modded.sx + modded.width > vxres) 472 modded.width = vxres - modded.sx; 473 if (modded.dx + modded.width > vxres) 474 modded.width = vxres - modded.dx; 475 if (modded.sy + modded.height > vyres) 476 modded.height = vyres - modded.sy; 477 if (modded.dy + modded.height > vyres) 478 modded.height = vyres - modded.dy; 479 480 o_x = modded.sx - modded.dx; /*(sx > dx ) ? (sx - dx) : (dx - sx); */ 481 o_y = modded.sy - modded.dy; /*(sy > dy ) ? (sy - dy) : (dy - sy); */ 482 483 x_align = (modded.sx & 0x1f); 484 485 PM3_WAIT(par, 6); 486 487 PM3_WRITE_REG(par, PM3Config2D, 488 PM3Config2D_UserScissorEnable | 489 PM3Config2D_ForegroundROPEnable | 490 PM3Config2D_Blocking | 491 PM3Config2D_ForegroundROP(0x3) | /* Ox3 is GXcopy */ 492 PM3Config2D_FBWriteEnable); 493 494 PM3_WRITE_REG(par, PM3ScissorMinXY, 495 ((modded.dy & 0x0fff) << 16) | (modded.dx & 0x0fff)); 496 PM3_WRITE_REG(par, PM3ScissorMaxXY, 497 (((modded.dy + modded.height) & 0x0fff) << 16) | 498 ((modded.dx + modded.width) & 0x0fff)); 499 500 PM3_WRITE_REG(par, PM3FBSourceReadBufferOffset, 501 PM3FBSourceReadBufferOffset_XOffset(o_x) | 502 PM3FBSourceReadBufferOffset_YOffset(o_y)); 503 504 PM3_WRITE_REG(par, PM3RectanglePosition, 505 PM3RectanglePosition_XOffset(modded.dx - x_align) | 506 PM3RectanglePosition_YOffset(modded.dy)); 507 508 PM3_WRITE_REG(par, PM3Render2D, 509 ((modded.sx > modded.dx) ? PM3Render2D_XPositive : 0) | 510 ((modded.sy > modded.dy) ? PM3Render2D_YPositive : 0) | 511 PM3Render2D_Operation_Normal | 512 PM3Render2D_SpanOperation | 513 PM3Render2D_FBSourceReadEnable | 514 PM3Render2D_Width(modded.width + x_align) | 515 PM3Render2D_Height(modded.height)); 516 } 517 518 static void pm3fb_imageblit(struct fb_info *info, const struct fb_image *image) 519 { 520 struct pm3_par *par = info->par; 521 u32 height = image->height; 522 u32 fgx, bgx; 523 const u32 *src = (const u32 *)image->data; 524 525 if (info->state != FBINFO_STATE_RUNNING) 526 return; 527 if (info->flags & FBINFO_HWACCEL_DISABLED) { 528 cfb_imageblit(info, image); 529 return; 530 } 531 switch (info->fix.visual) { 532 case FB_VISUAL_PSEUDOCOLOR: 533 fgx = image->fg_color; 534 bgx = image->bg_color; 535 break; 536 case FB_VISUAL_TRUECOLOR: 537 default: 538 fgx = par->palette[image->fg_color]; 539 bgx = par->palette[image->bg_color]; 540 break; 541 } 542 if (image->depth != 1) { 543 cfb_imageblit(info, image); 544 return; 545 } 546 547 if (info->var.bits_per_pixel == 8) { 548 fgx |= fgx << 8; 549 bgx |= bgx << 8; 550 } 551 if (info->var.bits_per_pixel <= 16) { 552 fgx |= fgx << 16; 553 bgx |= bgx << 16; 554 } 555 556 PM3_WAIT(par, 7); 557 558 PM3_WRITE_REG(par, PM3ForegroundColor, fgx); 559 PM3_WRITE_REG(par, PM3BackgroundColor, bgx); 560 561 /* ROP Ox3 is GXcopy */ 562 PM3_WRITE_REG(par, PM3Config2D, 563 PM3Config2D_UserScissorEnable | 564 PM3Config2D_UseConstantSource | 565 PM3Config2D_ForegroundROPEnable | 566 PM3Config2D_ForegroundROP(0x3) | 567 PM3Config2D_OpaqueSpan | 568 PM3Config2D_FBWriteEnable); 569 PM3_WRITE_REG(par, PM3ScissorMinXY, 570 ((image->dy & 0x0fff) << 16) | (image->dx & 0x0fff)); 571 PM3_WRITE_REG(par, PM3ScissorMaxXY, 572 (((image->dy + image->height) & 0x0fff) << 16) | 573 ((image->dx + image->width) & 0x0fff)); 574 PM3_WRITE_REG(par, PM3RectanglePosition, 575 PM3RectanglePosition_XOffset(image->dx) | 576 PM3RectanglePosition_YOffset(image->dy)); 577 PM3_WRITE_REG(par, PM3Render2D, 578 PM3Render2D_XPositive | 579 PM3Render2D_YPositive | 580 PM3Render2D_Operation_SyncOnBitMask | 581 PM3Render2D_SpanOperation | 582 PM3Render2D_Width(image->width) | 583 PM3Render2D_Height(image->height)); 584 585 586 while (height--) { 587 int width = ((image->width + 7) >> 3) 588 + info->pixmap.scan_align - 1; 589 width >>= 2; 590 591 while (width >= PM3_FIFO_SIZE) { 592 int i = PM3_FIFO_SIZE - 1; 593 594 PM3_WAIT(par, PM3_FIFO_SIZE); 595 while (i--) { 596 PM3_WRITE_REG(par, PM3BitMaskPattern, *src); 597 src++; 598 } 599 width -= PM3_FIFO_SIZE - 1; 600 } 601 602 PM3_WAIT(par, width + 1); 603 while (width--) { 604 PM3_WRITE_REG(par, PM3BitMaskPattern, *src); 605 src++; 606 } 607 } 608 } 609 /* end of acceleration functions */ 610 611 /* 612 * Hardware Cursor support. 613 */ 614 static const u8 cursor_bits_lookup[16] = { 615 0x00, 0x40, 0x10, 0x50, 0x04, 0x44, 0x14, 0x54, 616 0x01, 0x41, 0x11, 0x51, 0x05, 0x45, 0x15, 0x55 617 }; 618 619 static int pm3fb_cursor(struct fb_info *info, struct fb_cursor *cursor) 620 { 621 struct pm3_par *par = info->par; 622 u8 mode; 623 624 if (!hwcursor) 625 return -EINVAL; /* just to force soft_cursor() call */ 626 627 /* Too large of a cursor or wrong bpp :-( */ 628 if (cursor->image.width > 64 || 629 cursor->image.height > 64 || 630 cursor->image.depth > 1) 631 return -EINVAL; 632 633 mode = PM3RD_CursorMode_TYPE_X; 634 if (cursor->enable) 635 mode |= PM3RD_CursorMode_CURSOR_ENABLE; 636 637 PM3_WRITE_DAC_REG(par, PM3RD_CursorMode, mode); 638 639 /* 640 * If the cursor is not be changed this means either we want the 641 * current cursor state (if enable is set) or we want to query what 642 * we can do with the cursor (if enable is not set) 643 */ 644 if (!cursor->set) 645 return 0; 646 647 if (cursor->set & FB_CUR_SETPOS) { 648 int x = cursor->image.dx - info->var.xoffset; 649 int y = cursor->image.dy - info->var.yoffset; 650 651 PM3_WRITE_DAC_REG(par, PM3RD_CursorXLow, x & 0xff); 652 PM3_WRITE_DAC_REG(par, PM3RD_CursorXHigh, (x >> 8) & 0xf); 653 PM3_WRITE_DAC_REG(par, PM3RD_CursorYLow, y & 0xff); 654 PM3_WRITE_DAC_REG(par, PM3RD_CursorYHigh, (y >> 8) & 0xf); 655 } 656 657 if (cursor->set & FB_CUR_SETHOT) { 658 PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotX, 659 cursor->hot.x & 0x3f); 660 PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotY, 661 cursor->hot.y & 0x3f); 662 } 663 664 if (cursor->set & FB_CUR_SETCMAP) { 665 u32 fg_idx = cursor->image.fg_color; 666 u32 bg_idx = cursor->image.bg_color; 667 struct fb_cmap cmap = info->cmap; 668 669 /* the X11 driver says one should use these color registers */ 670 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(39), 671 cmap.red[fg_idx] >> 8 ); 672 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(40), 673 cmap.green[fg_idx] >> 8 ); 674 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(41), 675 cmap.blue[fg_idx] >> 8 ); 676 677 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(42), 678 cmap.red[bg_idx] >> 8 ); 679 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(43), 680 cmap.green[bg_idx] >> 8 ); 681 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(44), 682 cmap.blue[bg_idx] >> 8 ); 683 } 684 685 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) { 686 u8 *bitmap = (u8 *)cursor->image.data; 687 u8 *mask = (u8 *)cursor->mask; 688 int i; 689 int pos = PM3RD_CursorPattern(0); 690 691 for (i = 0; i < cursor->image.height; i++) { 692 int j = (cursor->image.width + 7) >> 3; 693 int k = 8 - j; 694 695 for (; j > 0; j--) { 696 u8 data = *bitmap ^ *mask; 697 698 if (cursor->rop == ROP_COPY) 699 data = *mask & *bitmap; 700 /* Upper 4 bits of bitmap data */ 701 PM3_WRITE_DAC_REG(par, pos++, 702 cursor_bits_lookup[data >> 4] | 703 (cursor_bits_lookup[*mask >> 4] << 1)); 704 /* Lower 4 bits of bitmap */ 705 PM3_WRITE_DAC_REG(par, pos++, 706 cursor_bits_lookup[data & 0xf] | 707 (cursor_bits_lookup[*mask & 0xf] << 1)); 708 bitmap++; 709 mask++; 710 } 711 for (; k > 0; k--) { 712 PM3_WRITE_DAC_REG(par, pos++, 0); 713 PM3_WRITE_DAC_REG(par, pos++, 0); 714 } 715 } 716 while (pos < PM3RD_CursorPattern(1024)) 717 PM3_WRITE_DAC_REG(par, pos++, 0); 718 } 719 return 0; 720 } 721 722 /* write the mode to registers */ 723 static void pm3fb_write_mode(struct fb_info *info) 724 { 725 struct pm3_par *par = info->par; 726 char tempsync = 0x00; 727 char tempmisc = 0x00; 728 const u32 hsstart = info->var.right_margin; 729 const u32 hsend = hsstart + info->var.hsync_len; 730 const u32 hbend = hsend + info->var.left_margin; 731 const u32 xres = (info->var.xres + 31) & ~31; 732 const u32 htotal = xres + hbend; 733 const u32 vsstart = info->var.lower_margin; 734 const u32 vsend = vsstart + info->var.vsync_len; 735 const u32 vbend = vsend + info->var.upper_margin; 736 const u32 vtotal = info->var.yres + vbend; 737 const u32 width = (info->var.xres_virtual + 7) & ~7; 738 const unsigned bpp = info->var.bits_per_pixel; 739 740 PM3_WAIT(par, 20); 741 PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xffffffff); 742 PM3_WRITE_REG(par, PM3Aperture0, 0x00000000); 743 PM3_WRITE_REG(par, PM3Aperture1, 0x00000000); 744 PM3_WRITE_REG(par, PM3FIFODis, 0x00000007); 745 746 PM3_WRITE_REG(par, PM3HTotal, 747 pm3fb_shift_bpp(bpp, htotal - 1)); 748 PM3_WRITE_REG(par, PM3HsEnd, 749 pm3fb_shift_bpp(bpp, hsend)); 750 PM3_WRITE_REG(par, PM3HsStart, 751 pm3fb_shift_bpp(bpp, hsstart)); 752 PM3_WRITE_REG(par, PM3HbEnd, 753 pm3fb_shift_bpp(bpp, hbend)); 754 PM3_WRITE_REG(par, PM3HgEnd, 755 pm3fb_shift_bpp(bpp, hbend)); 756 PM3_WRITE_REG(par, PM3ScreenStride, 757 pm3fb_shift_bpp(bpp, width)); 758 PM3_WRITE_REG(par, PM3VTotal, vtotal - 1); 759 PM3_WRITE_REG(par, PM3VsEnd, vsend - 1); 760 PM3_WRITE_REG(par, PM3VsStart, vsstart - 1); 761 PM3_WRITE_REG(par, PM3VbEnd, vbend); 762 763 switch (bpp) { 764 case 8: 765 PM3_WRITE_REG(par, PM3ByAperture1Mode, 766 PM3ByApertureMode_PIXELSIZE_8BIT); 767 PM3_WRITE_REG(par, PM3ByAperture2Mode, 768 PM3ByApertureMode_PIXELSIZE_8BIT); 769 break; 770 771 case 16: 772 #ifndef __BIG_ENDIAN 773 PM3_WRITE_REG(par, PM3ByAperture1Mode, 774 PM3ByApertureMode_PIXELSIZE_16BIT); 775 PM3_WRITE_REG(par, PM3ByAperture2Mode, 776 PM3ByApertureMode_PIXELSIZE_16BIT); 777 #else 778 PM3_WRITE_REG(par, PM3ByAperture1Mode, 779 PM3ByApertureMode_PIXELSIZE_16BIT | 780 PM3ByApertureMode_BYTESWAP_BADC); 781 PM3_WRITE_REG(par, PM3ByAperture2Mode, 782 PM3ByApertureMode_PIXELSIZE_16BIT | 783 PM3ByApertureMode_BYTESWAP_BADC); 784 #endif /* ! __BIG_ENDIAN */ 785 break; 786 787 case 32: 788 #ifndef __BIG_ENDIAN 789 PM3_WRITE_REG(par, PM3ByAperture1Mode, 790 PM3ByApertureMode_PIXELSIZE_32BIT); 791 PM3_WRITE_REG(par, PM3ByAperture2Mode, 792 PM3ByApertureMode_PIXELSIZE_32BIT); 793 #else 794 PM3_WRITE_REG(par, PM3ByAperture1Mode, 795 PM3ByApertureMode_PIXELSIZE_32BIT | 796 PM3ByApertureMode_BYTESWAP_DCBA); 797 PM3_WRITE_REG(par, PM3ByAperture2Mode, 798 PM3ByApertureMode_PIXELSIZE_32BIT | 799 PM3ByApertureMode_BYTESWAP_DCBA); 800 #endif /* ! __BIG_ENDIAN */ 801 break; 802 803 default: 804 DPRINTK("Unsupported depth %d\n", bpp); 805 break; 806 } 807 808 /* 809 * Oxygen VX1 - it appears that setting PM3VideoControl and 810 * then PM3RD_SyncControl to the same SYNC settings undoes 811 * any net change - they seem to xor together. Only set the 812 * sync options in PM3RD_SyncControl. --rmk 813 */ 814 { 815 unsigned int video = par->video; 816 817 video &= ~(PM3VideoControl_HSYNC_MASK | 818 PM3VideoControl_VSYNC_MASK); 819 video |= PM3VideoControl_HSYNC_ACTIVE_HIGH | 820 PM3VideoControl_VSYNC_ACTIVE_HIGH; 821 PM3_WRITE_REG(par, PM3VideoControl, video); 822 } 823 PM3_WRITE_REG(par, PM3VClkCtl, 824 (PM3_READ_REG(par, PM3VClkCtl) & 0xFFFFFFFC)); 825 PM3_WRITE_REG(par, PM3ScreenBase, par->base); 826 PM3_WRITE_REG(par, PM3ChipConfig, 827 (PM3_READ_REG(par, PM3ChipConfig) & 0xFFFFFFFD)); 828 829 wmb(); 830 { 831 unsigned char uninitialized_var(m); /* ClkPreScale */ 832 unsigned char uninitialized_var(n); /* ClkFeedBackScale */ 833 unsigned char uninitialized_var(p); /* ClkPostScale */ 834 unsigned long pixclock = PICOS2KHZ(info->var.pixclock); 835 836 (void)pm3fb_calculate_clock(pixclock, &m, &n, &p); 837 838 DPRINTK("Pixclock: %ld, Pre: %d, Feedback: %d, Post: %d\n", 839 pixclock, (int) m, (int) n, (int) p); 840 841 PM3_WRITE_DAC_REG(par, PM3RD_DClk0PreScale, m); 842 PM3_WRITE_DAC_REG(par, PM3RD_DClk0FeedbackScale, n); 843 PM3_WRITE_DAC_REG(par, PM3RD_DClk0PostScale, p); 844 } 845 /* 846 PM3_WRITE_DAC_REG(par, PM3RD_IndexControl, 0x00); 847 */ 848 /* 849 PM3_SLOW_WRITE_REG(par, PM3RD_IndexControl, 0x00); 850 */ 851 if ((par->video & PM3VideoControl_HSYNC_MASK) == 852 PM3VideoControl_HSYNC_ACTIVE_HIGH) 853 tempsync |= PM3RD_SyncControl_HSYNC_ACTIVE_HIGH; 854 if ((par->video & PM3VideoControl_VSYNC_MASK) == 855 PM3VideoControl_VSYNC_ACTIVE_HIGH) 856 tempsync |= PM3RD_SyncControl_VSYNC_ACTIVE_HIGH; 857 858 PM3_WRITE_DAC_REG(par, PM3RD_SyncControl, tempsync); 859 DPRINTK("PM3RD_SyncControl: %d\n", tempsync); 860 861 PM3_WRITE_DAC_REG(par, PM3RD_DACControl, 0x00); 862 863 switch (pm3fb_depth(&info->var)) { 864 case 8: 865 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, 866 PM3RD_PixelSize_8_BIT_PIXELS); 867 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, 868 PM3RD_ColorFormat_CI8_COLOR | 869 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW); 870 tempmisc |= PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; 871 break; 872 case 12: 873 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, 874 PM3RD_PixelSize_16_BIT_PIXELS); 875 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, 876 PM3RD_ColorFormat_4444_COLOR | 877 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW | 878 PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE); 879 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE | 880 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; 881 break; 882 case 15: 883 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, 884 PM3RD_PixelSize_16_BIT_PIXELS); 885 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, 886 PM3RD_ColorFormat_5551_FRONT_COLOR | 887 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW | 888 PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE); 889 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE | 890 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; 891 break; 892 case 16: 893 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, 894 PM3RD_PixelSize_16_BIT_PIXELS); 895 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, 896 PM3RD_ColorFormat_565_FRONT_COLOR | 897 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW | 898 PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE); 899 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE | 900 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; 901 break; 902 case 32: 903 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, 904 PM3RD_PixelSize_32_BIT_PIXELS); 905 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, 906 PM3RD_ColorFormat_8888_COLOR | 907 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW); 908 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE | 909 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; 910 break; 911 } 912 PM3_WRITE_DAC_REG(par, PM3RD_MiscControl, tempmisc); 913 } 914 915 /* 916 * hardware independent functions 917 */ 918 static int pm3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) 919 { 920 u32 lpitch; 921 unsigned bpp = var->red.length + var->green.length 922 + var->blue.length + var->transp.length; 923 924 if (bpp != var->bits_per_pixel) { 925 /* set predefined mode for bits_per_pixel settings */ 926 927 switch (var->bits_per_pixel) { 928 case 8: 929 var->red.length = 8; 930 var->green.length = 8; 931 var->blue.length = 8; 932 var->red.offset = 0; 933 var->green.offset = 0; 934 var->blue.offset = 0; 935 var->transp.offset = 0; 936 var->transp.length = 0; 937 break; 938 case 16: 939 var->red.length = 5; 940 var->blue.length = 5; 941 var->green.length = 6; 942 var->transp.length = 0; 943 break; 944 case 32: 945 var->red.length = 8; 946 var->green.length = 8; 947 var->blue.length = 8; 948 var->transp.length = 8; 949 break; 950 default: 951 DPRINTK("depth not supported: %u\n", 952 var->bits_per_pixel); 953 return -EINVAL; 954 } 955 } 956 /* it is assumed BGRA order */ 957 if (var->bits_per_pixel > 8 ) { 958 var->blue.offset = 0; 959 var->green.offset = var->blue.length; 960 var->red.offset = var->green.offset + var->green.length; 961 var->transp.offset = var->red.offset + var->red.length; 962 } 963 var->height = -1; 964 var->width = -1; 965 966 if (var->xres != var->xres_virtual) { 967 DPRINTK("virtual x resolution != " 968 "physical x resolution not supported\n"); 969 return -EINVAL; 970 } 971 972 if (var->yres > var->yres_virtual) { 973 DPRINTK("virtual y resolution < " 974 "physical y resolution not possible\n"); 975 return -EINVAL; 976 } 977 978 if (var->xoffset) { 979 DPRINTK("xoffset not supported\n"); 980 return -EINVAL; 981 } 982 983 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) { 984 DPRINTK("interlace not supported\n"); 985 return -EINVAL; 986 } 987 988 var->xres = (var->xres + 31) & ~31; /* could sometimes be 8 */ 989 lpitch = var->xres * ((var->bits_per_pixel + 7) >> 3); 990 991 if (var->xres < 200 || var->xres > 2048) { 992 DPRINTK("width not supported: %u\n", var->xres); 993 return -EINVAL; 994 } 995 996 if (var->yres < 200 || var->yres > 4095) { 997 DPRINTK("height not supported: %u\n", var->yres); 998 return -EINVAL; 999 } 1000 1001 if (lpitch * var->yres_virtual > info->fix.smem_len) { 1002 DPRINTK("no memory for screen (%ux%ux%u)\n", 1003 var->xres, var->yres_virtual, var->bits_per_pixel); 1004 return -EINVAL; 1005 } 1006 1007 if (PICOS2KHZ(var->pixclock) > PM3_MAX_PIXCLOCK) { 1008 DPRINTK("pixclock too high (%ldKHz)\n", 1009 PICOS2KHZ(var->pixclock)); 1010 return -EINVAL; 1011 } 1012 1013 var->accel_flags = 0; /* Can't mmap if this is on */ 1014 1015 DPRINTK("Checking graphics mode at %dx%d depth %d\n", 1016 var->xres, var->yres, var->bits_per_pixel); 1017 return 0; 1018 } 1019 1020 static int pm3fb_set_par(struct fb_info *info) 1021 { 1022 struct pm3_par *par = info->par; 1023 const u32 xres = (info->var.xres + 31) & ~31; 1024 const unsigned bpp = info->var.bits_per_pixel; 1025 1026 par->base = pm3fb_shift_bpp(bpp, (info->var.yoffset * xres) 1027 + info->var.xoffset); 1028 par->video = 0; 1029 1030 if (info->var.sync & FB_SYNC_HOR_HIGH_ACT) 1031 par->video |= PM3VideoControl_HSYNC_ACTIVE_HIGH; 1032 else 1033 par->video |= PM3VideoControl_HSYNC_ACTIVE_LOW; 1034 1035 if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) 1036 par->video |= PM3VideoControl_VSYNC_ACTIVE_HIGH; 1037 else 1038 par->video |= PM3VideoControl_VSYNC_ACTIVE_LOW; 1039 1040 if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) 1041 par->video |= PM3VideoControl_LINE_DOUBLE_ON; 1042 1043 if ((info->var.activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) 1044 par->video |= PM3VideoControl_ENABLE; 1045 else 1046 DPRINTK("PM3Video disabled\n"); 1047 1048 switch (bpp) { 1049 case 8: 1050 par->video |= PM3VideoControl_PIXELSIZE_8BIT; 1051 break; 1052 case 16: 1053 par->video |= PM3VideoControl_PIXELSIZE_16BIT; 1054 break; 1055 case 32: 1056 par->video |= PM3VideoControl_PIXELSIZE_32BIT; 1057 break; 1058 default: 1059 DPRINTK("Unsupported depth\n"); 1060 break; 1061 } 1062 1063 info->fix.visual = 1064 (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; 1065 info->fix.line_length = ((info->var.xres_virtual + 7) >> 3) * bpp; 1066 1067 /* pm3fb_clear_memory(info, 0);*/ 1068 pm3fb_clear_colormap(par, 0, 0, 0); 1069 PM3_WRITE_DAC_REG(par, PM3RD_CursorMode, 0); 1070 pm3fb_init_engine(info); 1071 pm3fb_write_mode(info); 1072 return 0; 1073 } 1074 1075 static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green, 1076 unsigned blue, unsigned transp, 1077 struct fb_info *info) 1078 { 1079 struct pm3_par *par = info->par; 1080 1081 if (regno >= 256) /* no. of hw registers */ 1082 return -EINVAL; 1083 1084 /* grayscale works only partially under directcolor */ 1085 /* grayscale = 0.30*R + 0.59*G + 0.11*B */ 1086 if (info->var.grayscale) 1087 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8; 1088 1089 /* Directcolor: 1090 * var->{color}.offset contains start of bitfield 1091 * var->{color}.length contains length of bitfield 1092 * {hardwarespecific} contains width of DAC 1093 * pseudo_palette[X] is programmed to (X << red.offset) | 1094 * (X << green.offset) | 1095 * (X << blue.offset) 1096 * RAMDAC[X] is programmed to (red, green, blue) 1097 * color depth = SUM(var->{color}.length) 1098 * 1099 * Pseudocolor: 1100 * var->{color}.offset is 0 1101 * var->{color}.length contains width of DAC or the number 1102 * of unique colors available (color depth) 1103 * pseudo_palette is not used 1104 * RAMDAC[X] is programmed to (red, green, blue) 1105 * color depth = var->{color}.length 1106 */ 1107 1108 /* 1109 * This is the point where the color is converted to something that 1110 * is acceptable by the hardware. 1111 */ 1112 #define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16) 1113 red = CNVT_TOHW(red, info->var.red.length); 1114 green = CNVT_TOHW(green, info->var.green.length); 1115 blue = CNVT_TOHW(blue, info->var.blue.length); 1116 transp = CNVT_TOHW(transp, info->var.transp.length); 1117 #undef CNVT_TOHW 1118 1119 if (info->fix.visual == FB_VISUAL_TRUECOLOR || 1120 info->fix.visual == FB_VISUAL_DIRECTCOLOR) { 1121 u32 v; 1122 1123 if (regno >= 16) 1124 return -EINVAL; 1125 1126 v = (red << info->var.red.offset) | 1127 (green << info->var.green.offset) | 1128 (blue << info->var.blue.offset) | 1129 (transp << info->var.transp.offset); 1130 1131 switch (info->var.bits_per_pixel) { 1132 case 8: 1133 break; 1134 case 16: 1135 case 32: 1136 ((u32 *)(info->pseudo_palette))[regno] = v; 1137 break; 1138 } 1139 return 0; 1140 } else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) 1141 pm3fb_set_color(par, regno, red, green, blue); 1142 1143 return 0; 1144 } 1145 1146 static int pm3fb_pan_display(struct fb_var_screeninfo *var, 1147 struct fb_info *info) 1148 { 1149 struct pm3_par *par = info->par; 1150 const u32 xres = (info->var.xres + 31) & ~31; 1151 1152 par->base = pm3fb_shift_bpp(info->var.bits_per_pixel, 1153 (var->yoffset * xres) 1154 + var->xoffset); 1155 PM3_WAIT(par, 1); 1156 PM3_WRITE_REG(par, PM3ScreenBase, par->base); 1157 return 0; 1158 } 1159 1160 static int pm3fb_blank(int blank_mode, struct fb_info *info) 1161 { 1162 struct pm3_par *par = info->par; 1163 u32 video = par->video; 1164 1165 /* 1166 * Oxygen VX1 - it appears that setting PM3VideoControl and 1167 * then PM3RD_SyncControl to the same SYNC settings undoes 1168 * any net change - they seem to xor together. Only set the 1169 * sync options in PM3RD_SyncControl. --rmk 1170 */ 1171 video &= ~(PM3VideoControl_HSYNC_MASK | 1172 PM3VideoControl_VSYNC_MASK); 1173 video |= PM3VideoControl_HSYNC_ACTIVE_HIGH | 1174 PM3VideoControl_VSYNC_ACTIVE_HIGH; 1175 1176 switch (blank_mode) { 1177 case FB_BLANK_UNBLANK: 1178 video |= PM3VideoControl_ENABLE; 1179 break; 1180 case FB_BLANK_NORMAL: 1181 video &= ~PM3VideoControl_ENABLE; 1182 break; 1183 case FB_BLANK_HSYNC_SUSPEND: 1184 video &= ~(PM3VideoControl_HSYNC_MASK | 1185 PM3VideoControl_BLANK_ACTIVE_LOW); 1186 break; 1187 case FB_BLANK_VSYNC_SUSPEND: 1188 video &= ~(PM3VideoControl_VSYNC_MASK | 1189 PM3VideoControl_BLANK_ACTIVE_LOW); 1190 break; 1191 case FB_BLANK_POWERDOWN: 1192 video &= ~(PM3VideoControl_HSYNC_MASK | 1193 PM3VideoControl_VSYNC_MASK | 1194 PM3VideoControl_BLANK_ACTIVE_LOW); 1195 break; 1196 default: 1197 DPRINTK("Unsupported blanking %d\n", blank_mode); 1198 return 1; 1199 } 1200 1201 PM3_WAIT(par, 1); 1202 PM3_WRITE_REG(par, PM3VideoControl, video); 1203 return 0; 1204 } 1205 1206 /* 1207 * Frame buffer operations 1208 */ 1209 1210 static struct fb_ops pm3fb_ops = { 1211 .owner = THIS_MODULE, 1212 .fb_check_var = pm3fb_check_var, 1213 .fb_set_par = pm3fb_set_par, 1214 .fb_setcolreg = pm3fb_setcolreg, 1215 .fb_pan_display = pm3fb_pan_display, 1216 .fb_fillrect = pm3fb_fillrect, 1217 .fb_copyarea = pm3fb_copyarea, 1218 .fb_imageblit = pm3fb_imageblit, 1219 .fb_blank = pm3fb_blank, 1220 .fb_sync = pm3fb_sync, 1221 .fb_cursor = pm3fb_cursor, 1222 }; 1223 1224 /* ------------------------------------------------------------------------- */ 1225 1226 /* 1227 * Initialization 1228 */ 1229 1230 /* mmio register are already mapped when this function is called */ 1231 /* the pm3fb_fix.smem_start is also set */ 1232 static unsigned long pm3fb_size_memory(struct pm3_par *par) 1233 { 1234 unsigned long memsize = 0; 1235 unsigned long tempBypass, i, temp1, temp2; 1236 unsigned char __iomem *screen_mem; 1237 1238 pm3fb_fix.smem_len = 64 * 1024l * 1024; /* request full aperture size */ 1239 /* Linear frame buffer - request region and map it. */ 1240 if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len, 1241 "pm3fb smem")) { 1242 printk(KERN_WARNING "pm3fb: Can't reserve smem.\n"); 1243 return 0; 1244 } 1245 screen_mem = 1246 ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len); 1247 if (!screen_mem) { 1248 printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n"); 1249 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len); 1250 return 0; 1251 } 1252 1253 /* TODO: card-specific stuff, *before* accessing *any* FB memory */ 1254 /* For Appian Jeronimo 2000 board second head */ 1255 1256 tempBypass = PM3_READ_REG(par, PM3MemBypassWriteMask); 1257 1258 DPRINTK("PM3MemBypassWriteMask was: 0x%08lx\n", tempBypass); 1259 1260 PM3_WAIT(par, 1); 1261 PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xFFFFFFFF); 1262 1263 /* pm3 split up memory, replicates, and do a lot of 1264 * nasty stuff IMHO ;-) 1265 */ 1266 for (i = 0; i < 32; i++) { 1267 fb_writel(i * 0x00345678, 1268 (screen_mem + (i * 1048576))); 1269 mb(); 1270 temp1 = fb_readl((screen_mem + (i * 1048576))); 1271 1272 /* Let's check for wrapover, write will fail at 16MB boundary */ 1273 if (temp1 == (i * 0x00345678)) 1274 memsize = i; 1275 else 1276 break; 1277 } 1278 1279 DPRINTK("First detect pass already got %ld MB\n", memsize + 1); 1280 1281 if (memsize + 1 == i) { 1282 for (i = 0; i < 32; i++) { 1283 /* Clear first 32MB ; 0 is 0, no need to byteswap */ 1284 writel(0x0000000, (screen_mem + (i * 1048576))); 1285 } 1286 wmb(); 1287 1288 for (i = 32; i < 64; i++) { 1289 fb_writel(i * 0x00345678, 1290 (screen_mem + (i * 1048576))); 1291 mb(); 1292 temp1 = 1293 fb_readl((screen_mem + (i * 1048576))); 1294 temp2 = 1295 fb_readl((screen_mem + ((i - 32) * 1048576))); 1296 /* different value, different RAM... */ 1297 if ((temp1 == (i * 0x00345678)) && (temp2 == 0)) 1298 memsize = i; 1299 else 1300 break; 1301 } 1302 } 1303 DPRINTK("Second detect pass got %ld MB\n", memsize + 1); 1304 1305 PM3_WAIT(par, 1); 1306 PM3_WRITE_REG(par, PM3MemBypassWriteMask, tempBypass); 1307 1308 iounmap(screen_mem); 1309 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len); 1310 memsize = 1048576 * (memsize + 1); 1311 1312 DPRINTK("Returning 0x%08lx bytes\n", memsize); 1313 1314 return memsize; 1315 } 1316 1317 static int pm3fb_probe(struct pci_dev *dev, const struct pci_device_id *ent) 1318 { 1319 struct fb_info *info; 1320 struct pm3_par *par; 1321 struct device *device = &dev->dev; /* for pci drivers */ 1322 int err; 1323 int retval = -ENXIO; 1324 1325 err = pci_enable_device(dev); 1326 if (err) { 1327 printk(KERN_WARNING "pm3fb: Can't enable PCI dev: %d\n", err); 1328 return err; 1329 } 1330 /* 1331 * Dynamically allocate info and par 1332 */ 1333 info = framebuffer_alloc(sizeof(struct pm3_par), device); 1334 1335 if (!info) 1336 return -ENOMEM; 1337 par = info->par; 1338 1339 /* 1340 * Here we set the screen_base to the virtual memory address 1341 * for the framebuffer. 1342 */ 1343 pm3fb_fix.mmio_start = pci_resource_start(dev, 0); 1344 pm3fb_fix.mmio_len = PM3_REGS_SIZE; 1345 #if defined(__BIG_ENDIAN) 1346 pm3fb_fix.mmio_start += PM3_REGS_SIZE; 1347 DPRINTK("Adjusting register base for big-endian.\n"); 1348 #endif 1349 1350 /* Registers - request region and map it. */ 1351 if (!request_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len, 1352 "pm3fb regbase")) { 1353 printk(KERN_WARNING "pm3fb: Can't reserve regbase.\n"); 1354 goto err_exit_neither; 1355 } 1356 par->v_regs = 1357 ioremap_nocache(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len); 1358 if (!par->v_regs) { 1359 printk(KERN_WARNING "pm3fb: Can't remap %s register area.\n", 1360 pm3fb_fix.id); 1361 release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len); 1362 goto err_exit_neither; 1363 } 1364 1365 /* Linear frame buffer - request region and map it. */ 1366 pm3fb_fix.smem_start = pci_resource_start(dev, 1); 1367 pm3fb_fix.smem_len = pm3fb_size_memory(par); 1368 if (!pm3fb_fix.smem_len) { 1369 printk(KERN_WARNING "pm3fb: Can't find memory on board.\n"); 1370 goto err_exit_mmio; 1371 } 1372 if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len, 1373 "pm3fb smem")) { 1374 printk(KERN_WARNING "pm3fb: Can't reserve smem.\n"); 1375 goto err_exit_mmio; 1376 } 1377 info->screen_base = 1378 ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len); 1379 if (!info->screen_base) { 1380 printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n"); 1381 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len); 1382 goto err_exit_mmio; 1383 } 1384 info->screen_size = pm3fb_fix.smem_len; 1385 1386 #ifdef CONFIG_MTRR 1387 if (!nomtrr) 1388 par->mtrr_handle = mtrr_add(pm3fb_fix.smem_start, 1389 pm3fb_fix.smem_len, 1390 MTRR_TYPE_WRCOMB, 1); 1391 #endif 1392 info->fbops = &pm3fb_ops; 1393 1394 par->video = PM3_READ_REG(par, PM3VideoControl); 1395 1396 info->fix = pm3fb_fix; 1397 info->pseudo_palette = par->palette; 1398 info->flags = FBINFO_DEFAULT | 1399 FBINFO_HWACCEL_XPAN | 1400 FBINFO_HWACCEL_YPAN | 1401 FBINFO_HWACCEL_COPYAREA | 1402 FBINFO_HWACCEL_IMAGEBLIT | 1403 FBINFO_HWACCEL_FILLRECT; 1404 1405 if (noaccel) { 1406 printk(KERN_DEBUG "disabling acceleration\n"); 1407 info->flags |= FBINFO_HWACCEL_DISABLED; 1408 } 1409 info->pixmap.addr = kmalloc(PM3_PIXMAP_SIZE, GFP_KERNEL); 1410 if (!info->pixmap.addr) { 1411 retval = -ENOMEM; 1412 goto err_exit_pixmap; 1413 } 1414 info->pixmap.size = PM3_PIXMAP_SIZE; 1415 info->pixmap.buf_align = 4; 1416 info->pixmap.scan_align = 4; 1417 info->pixmap.access_align = 32; 1418 info->pixmap.flags = FB_PIXMAP_SYSTEM; 1419 1420 /* 1421 * This should give a reasonable default video mode. The following is 1422 * done when we can set a video mode. 1423 */ 1424 if (!mode_option) 1425 mode_option = "640x480@60"; 1426 1427 retval = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8); 1428 1429 if (!retval || retval == 4) { 1430 retval = -EINVAL; 1431 goto err_exit_both; 1432 } 1433 1434 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { 1435 retval = -ENOMEM; 1436 goto err_exit_both; 1437 } 1438 1439 /* 1440 * For drivers that can... 1441 */ 1442 pm3fb_check_var(&info->var, info); 1443 1444 if (register_framebuffer(info) < 0) { 1445 retval = -EINVAL; 1446 goto err_exit_all; 1447 } 1448 fb_info(info, "%s frame buffer device\n", info->fix.id); 1449 pci_set_drvdata(dev, info); 1450 return 0; 1451 1452 err_exit_all: 1453 fb_dealloc_cmap(&info->cmap); 1454 err_exit_both: 1455 kfree(info->pixmap.addr); 1456 err_exit_pixmap: 1457 iounmap(info->screen_base); 1458 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len); 1459 err_exit_mmio: 1460 iounmap(par->v_regs); 1461 release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len); 1462 err_exit_neither: 1463 framebuffer_release(info); 1464 return retval; 1465 } 1466 1467 /* 1468 * Cleanup 1469 */ 1470 static void pm3fb_remove(struct pci_dev *dev) 1471 { 1472 struct fb_info *info = pci_get_drvdata(dev); 1473 1474 if (info) { 1475 struct fb_fix_screeninfo *fix = &info->fix; 1476 struct pm3_par *par = info->par; 1477 1478 unregister_framebuffer(info); 1479 fb_dealloc_cmap(&info->cmap); 1480 1481 #ifdef CONFIG_MTRR 1482 if (par->mtrr_handle >= 0) 1483 mtrr_del(par->mtrr_handle, info->fix.smem_start, 1484 info->fix.smem_len); 1485 #endif /* CONFIG_MTRR */ 1486 iounmap(info->screen_base); 1487 release_mem_region(fix->smem_start, fix->smem_len); 1488 iounmap(par->v_regs); 1489 release_mem_region(fix->mmio_start, fix->mmio_len); 1490 1491 kfree(info->pixmap.addr); 1492 framebuffer_release(info); 1493 } 1494 } 1495 1496 static struct pci_device_id pm3fb_id_table[] = { 1497 { PCI_VENDOR_ID_3DLABS, 0x0a, 1498 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 1499 { 0, } 1500 }; 1501 1502 /* For PCI drivers */ 1503 static struct pci_driver pm3fb_driver = { 1504 .name = "pm3fb", 1505 .id_table = pm3fb_id_table, 1506 .probe = pm3fb_probe, 1507 .remove = pm3fb_remove, 1508 }; 1509 1510 MODULE_DEVICE_TABLE(pci, pm3fb_id_table); 1511 1512 #ifndef MODULE 1513 /* 1514 * Setup 1515 */ 1516 1517 /* 1518 * Only necessary if your driver takes special options, 1519 * otherwise we fall back on the generic fb_setup(). 1520 */ 1521 static int __init pm3fb_setup(char *options) 1522 { 1523 char *this_opt; 1524 1525 /* Parse user specified options (`video=pm3fb:') */ 1526 if (!options || !*options) 1527 return 0; 1528 1529 while ((this_opt = strsep(&options, ",")) != NULL) { 1530 if (!*this_opt) 1531 continue; 1532 else if (!strncmp(this_opt, "noaccel", 7)) 1533 noaccel = 1; 1534 else if (!strncmp(this_opt, "hwcursor=", 9)) 1535 hwcursor = simple_strtoul(this_opt + 9, NULL, 0); 1536 #ifdef CONFIG_MTRR 1537 else if (!strncmp(this_opt, "nomtrr", 6)) 1538 nomtrr = 1; 1539 #endif 1540 else 1541 mode_option = this_opt; 1542 } 1543 return 0; 1544 } 1545 #endif /* MODULE */ 1546 1547 static int __init pm3fb_init(void) 1548 { 1549 /* 1550 * For kernel boot options (in 'video=pm3fb:<options>' format) 1551 */ 1552 #ifndef MODULE 1553 char *option = NULL; 1554 1555 if (fb_get_options("pm3fb", &option)) 1556 return -ENODEV; 1557 pm3fb_setup(option); 1558 #endif 1559 1560 return pci_register_driver(&pm3fb_driver); 1561 } 1562 1563 #ifdef MODULE 1564 static void __exit pm3fb_exit(void) 1565 { 1566 pci_unregister_driver(&pm3fb_driver); 1567 } 1568 1569 module_exit(pm3fb_exit); 1570 #endif 1571 module_init(pm3fb_init); 1572 1573 module_param(mode_option, charp, 0); 1574 MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'"); 1575 module_param(noaccel, bool, 0); 1576 MODULE_PARM_DESC(noaccel, "Disable acceleration"); 1577 module_param(hwcursor, int, 0644); 1578 MODULE_PARM_DESC(hwcursor, "Enable hardware cursor " 1579 "(1=enable, 0=disable, default=1)"); 1580 #ifdef CONFIG_MTRR 1581 module_param(nomtrr, bool, 0); 1582 MODULE_PARM_DESC(nomtrr, "Disable MTRR support (0 or 1=disabled) (default=0)"); 1583 #endif 1584 1585 MODULE_DESCRIPTION("Permedia3 framebuffer device driver"); 1586 MODULE_LICENSE("GPL"); 1587