drivers/video/ffb.c

   1 /* ffb.c: Creator/Elite3D frame buffer driver
   2  *
   3  * Copyright (C) 2003 David S. Miller (davem@redhat.com)
   4  * Copyright (C) 1997,1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
   5  *
   6  * Driver layout based loosely on tgafb.c, see that file for credits.
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/kernel.h>
  11 #include <linux/errno.h>
  12 #include <linux/string.h>
  13 #include <linux/slab.h>
  14 #include <linux/delay.h>
  15 #include <linux/init.h>
  16 #include <linux/fb.h>
  17 #include <linux/mm.h>
  18 #include <linux/timer.h>
  19
  20 #include <asm/io.h>
  21 #include <asm/upa.h>
  22 #include <asm/oplib.h>
  23 #include <asm/fbio.h>
  24
  25 #include "sbuslib.h"
  26
  27 /*
  28  * Local functions.
  29  */
  30
  31 static int ffb_setcolreg(unsigned, unsigned, unsigned, unsigned,
  32                          unsigned, struct fb_info *);
  33 static int ffb_blank(int, struct fb_info *);
  34 static void ffb_init_fix(struct fb_info *);
  35
  36 static void ffb_imageblit(struct fb_info *, const struct fb_image *);
  37 static void ffb_fillrect(struct fb_info *, const struct fb_fillrect *);
  38 static void ffb_copyarea(struct fb_info *, const struct fb_copyarea *);
  39 static int ffb_sync(struct fb_info *);
  40 static int ffb_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
  41 static int ffb_ioctl(struct inode *, struct file *, unsigned int,
  42                      unsigned long, struct fb_info *);
  43 static int ffb_pan_display(struct fb_var_screeninfo *, struct fb_info *);
  44
  45 /*
  46  *  Frame buffer operations
  47  */
  48
  49 static struct fb_ops ffb_ops = {
  50         .owner                  = THIS_MODULE,
  51         .fb_setcolreg           = ffb_setcolreg,
  52         .fb_blank               = ffb_blank,
  53         .fb_pan_display         = ffb_pan_display,
  54         .fb_fillrect            = ffb_fillrect,
  55         .fb_copyarea            = ffb_copyarea,
  56         .fb_imageblit           = ffb_imageblit,
  57         .fb_sync                = ffb_sync,
  58         .fb_mmap                = ffb_mmap,
  59         .fb_ioctl               = ffb_ioctl,
  60 };
  61
  62 /* Register layout and definitions */
  63 #define FFB_SFB8R_VOFF          0x00000000
  64 #define FFB_SFB8G_VOFF          0x00400000
  65 #define FFB_SFB8B_VOFF          0x00800000
  66 #define FFB_SFB8X_VOFF          0x00c00000
  67 #define FFB_SFB32_VOFF          0x01000000
  68 #define FFB_SFB64_VOFF          0x02000000
  69 #define FFB_FBC_REGS_VOFF       0x04000000
  70 #define FFB_BM_FBC_REGS_VOFF    0x04002000
  71 #define FFB_DFB8R_VOFF          0x04004000
  72 #define FFB_DFB8G_VOFF          0x04404000
  73 #define FFB_DFB8B_VOFF          0x04804000
  74 #define FFB_DFB8X_VOFF          0x04c04000
  75 #define FFB_DFB24_VOFF          0x05004000
  76 #define FFB_DFB32_VOFF          0x06004000
  77 #define FFB_DFB422A_VOFF        0x07004000      /* DFB 422 mode write to A */
  78 #define FFB_DFB422AD_VOFF       0x07804000      /* DFB 422 mode with line doubling */
  79 #define FFB_DFB24B_VOFF         0x08004000      /* DFB 24bit mode write to B */
  80 #define FFB_DFB422B_VOFF        0x09004000      /* DFB 422 mode write to B */
  81 #define FFB_DFB422BD_VOFF       0x09804000      /* DFB 422 mode with line doubling */
  82 #define FFB_SFB16Z_VOFF         0x0a004000      /* 16bit mode Z planes */
  83 #define FFB_SFB8Z_VOFF          0x0a404000      /* 8bit mode Z planes */
  84 #define FFB_SFB422_VOFF         0x0ac04000      /* SFB 422 mode write to A/B */
  85 #define FFB_SFB422D_VOFF        0x0b404000      /* SFB 422 mode with line doubling */
  86 #define FFB_FBC_KREGS_VOFF      0x0bc04000
  87 #define FFB_DAC_VOFF            0x0bc06000
  88 #define FFB_PROM_VOFF           0x0bc08000
  89 #define FFB_EXP_VOFF            0x0bc18000
  90
  91 #define FFB_SFB8R_POFF          0x04000000UL
  92 #define FFB_SFB8G_POFF          0x04400000UL
  93 #define FFB_SFB8B_POFF          0x04800000UL
  94 #define FFB_SFB8X_POFF          0x04c00000UL
  95 #define FFB_SFB32_POFF          0x05000000UL
  96 #define FFB_SFB64_POFF          0x06000000UL
  97 #define FFB_FBC_REGS_POFF       0x00600000UL
  98 #define FFB_BM_FBC_REGS_POFF    0x00600000UL
  99 #define FFB_DFB8R_POFF          0x01000000UL
 100 #define FFB_DFB8G_POFF          0x01400000UL
 101 #define FFB_DFB8B_POFF          0x01800000UL
 102 #define FFB_DFB8X_POFF          0x01c00000UL
 103 #define FFB_DFB24_POFF          0x02000000UL
 104 #define FFB_DFB32_POFF          0x03000000UL
 105 #define FFB_FBC_KREGS_POFF      0x00610000UL
 106 #define FFB_DAC_POFF            0x00400000UL
 107 #define FFB_PROM_POFF           0x00000000UL
 108 #define FFB_EXP_POFF            0x00200000UL
 109 #define FFB_DFB422A_POFF        0x09000000UL
 110 #define FFB_DFB422AD_POFF       0x09800000UL
 111 #define FFB_DFB24B_POFF         0x0a000000UL
 112 #define FFB_DFB422B_POFF        0x0b000000UL
 113 #define FFB_DFB422BD_POFF       0x0b800000UL
 114 #define FFB_SFB16Z_POFF         0x0c800000UL
 115 #define FFB_SFB8Z_POFF          0x0c000000UL
 116 #define FFB_SFB422_POFF         0x0d000000UL
 117 #define FFB_SFB422D_POFF        0x0d800000UL
 118
 119 /* Draw operations */
 120 #define FFB_DRAWOP_DOT          0x00
 121 #define FFB_DRAWOP_AADOT        0x01
 122 #define FFB_DRAWOP_BRLINECAP    0x02
 123 #define FFB_DRAWOP_BRLINEOPEN   0x03
 124 #define FFB_DRAWOP_DDLINE       0x04
 125 #define FFB_DRAWOP_AALINE       0x05
 126 #define FFB_DRAWOP_TRIANGLE     0x06
 127 #define FFB_DRAWOP_POLYGON      0x07
 128 #define FFB_DRAWOP_RECTANGLE    0x08
 129 #define FFB_DRAWOP_FASTFILL     0x09
 130 #define FFB_DRAWOP_BCOPY        0x0a
 131 #define FFB_DRAWOP_VSCROLL      0x0b
 132
 133 /* Pixel processor control */
 134 /* Force WID */
 135 #define FFB_PPC_FW_DISABLE      0x800000
 136 #define FFB_PPC_FW_ENABLE       0xc00000
 137 /* Auxiliary clip */
 138 #define FFB_PPC_ACE_DISABLE     0x040000
 139 #define FFB_PPC_ACE_AUX_SUB     0x080000
 140 #define FFB_PPC_ACE_AUX_ADD     0x0c0000
 141 /* Depth cue */
 142 #define FFB_PPC_DCE_DISABLE     0x020000
 143 #define FFB_PPC_DCE_ENABLE      0x030000
 144 /* Alpha blend */
 145 #define FFB_PPC_ABE_DISABLE     0x008000
 146 #define FFB_PPC_ABE_ENABLE      0x00c000
 147 /* View clip */
 148 #define FFB_PPC_VCE_DISABLE     0x001000
 149 #define FFB_PPC_VCE_2D          0x002000
 150 #define FFB_PPC_VCE_3D          0x003000
 151 /* Area pattern */
 152 #define FFB_PPC_APE_DISABLE     0x000800
 153 #define FFB_PPC_APE_ENABLE      0x000c00
 154 /* Transparent background */
 155 #define FFB_PPC_TBE_OPAQUE      0x000200
 156 #define FFB_PPC_TBE_TRANSPARENT 0x000300
 157 /* Z source */
 158 #define FFB_PPC_ZS_VAR          0x000080
 159 #define FFB_PPC_ZS_CONST        0x0000c0
 160 /* Y source */
 161 #define FFB_PPC_YS_VAR          0x000020
 162 #define FFB_PPC_YS_CONST        0x000030
 163 /* X source */
 164 #define FFB_PPC_XS_WID          0x000004
 165 #define FFB_PPC_XS_VAR          0x000008
 166 #define FFB_PPC_XS_CONST        0x00000c
 167 /* Color (BGR) source */
 168 #define FFB_PPC_CS_VAR          0x000002
 169 #define FFB_PPC_CS_CONST        0x000003
 170
 171 #define FFB_ROP_NEW                  0x83
 172 #define FFB_ROP_OLD                  0x85
 173 #define FFB_ROP_NEW_XOR_OLD          0x86
 174
 175 #define FFB_UCSR_FIFO_MASK     0x00000fff
 176 #define FFB_UCSR_FB_BUSY       0x01000000
 177 #define FFB_UCSR_RP_BUSY       0x02000000
 178 #define FFB_UCSR_ALL_BUSY      (FFB_UCSR_RP_BUSY|FFB_UCSR_FB_BUSY)
 179 #define FFB_UCSR_READ_ERR      0x40000000
 180 #define FFB_UCSR_FIFO_OVFL     0x80000000
 181 #define FFB_UCSR_ALL_ERRORS    (FFB_UCSR_READ_ERR|FFB_UCSR_FIFO_OVFL)
 182
 183 struct ffb_fbc {
 184         /* Next vertex registers */
 185         u32             xxx1[3];
 186         volatile u32    alpha;
 187         volatile u32    red;
 188         volatile u32    green;
 189         volatile u32    blue;
 190         volatile u32    depth;
 191         volatile u32    y;
 192         volatile u32    x;
 193         u32             xxx2[2];
 194         volatile u32    ryf;
 195         volatile u32    rxf;
 196         u32             xxx3[2];
 197
 198         volatile u32    dmyf;
 199         volatile u32    dmxf;
 200         u32             xxx4[2];
 201         volatile u32    ebyi;
 202         volatile u32    ebxi;
 203         u32             xxx5[2];
 204         volatile u32    by;
 205         volatile u32    bx;
 206         u32             dy;
 207         u32             dx;
 208         volatile u32    bh;
 209         volatile u32    bw;
 210         u32             xxx6[2];
 211
 212         u32             xxx7[32];
 213
 214         /* Setup unit vertex state register */
 215         volatile u32    suvtx;
 216         u32             xxx8[63];
 217
 218         /* Control registers */
 219         volatile u32    ppc;
 220         volatile u32    wid;
 221         volatile u32    fg;
 222         volatile u32    bg;
 223         volatile u32    consty;
 224         volatile u32    constz;
 225         volatile u32    xclip;
 226         volatile u32    dcss;
 227         volatile u32    vclipmin;
 228         volatile u32    vclipmax;
 229         volatile u32    vclipzmin;
 230         volatile u32    vclipzmax;
 231         volatile u32    dcsf;
 232         volatile u32    dcsb;
 233         volatile u32    dczf;
 234         volatile u32    dczb;
 235
 236         u32             xxx9;
 237         volatile u32    blendc;
 238         volatile u32    blendc1;
 239         volatile u32    blendc2;
 240         volatile u32    fbramitc;
 241         volatile u32    fbc;
 242         volatile u32    rop;
 243         volatile u32    cmp;
 244         volatile u32    matchab;
 245         volatile u32    matchc;
 246         volatile u32    magnab;
 247         volatile u32    magnc;
 248         volatile u32    fbcfg0;
 249         volatile u32    fbcfg1;
 250         volatile u32    fbcfg2;
 251         volatile u32    fbcfg3;
 252
 253         u32             ppcfg;
 254         volatile u32    pick;
 255         volatile u32    fillmode;
 256         volatile u32    fbramwac;
 257         volatile u32    pmask;
 258         volatile u32    xpmask;
 259         volatile u32    ypmask;
 260         volatile u32    zpmask;
 261         volatile u32    clip0min;
 262         volatile u32    clip0max;
 263         volatile u32    clip1min;
 264         volatile u32    clip1max;
 265         volatile u32    clip2min;
 266         volatile u32    clip2max;
 267         volatile u32    clip3min;
 268         volatile u32    clip3max;
 269
 270         /* New 3dRAM III support regs */
 271         volatile u32    rawblend2;
 272         volatile u32    rawpreblend;
 273         volatile u32    rawstencil;
 274         volatile u32    rawstencilctl;
 275         volatile u32    threedram1;
 276         volatile u32    threedram2;
 277         volatile u32    passin;
 278         volatile u32    rawclrdepth;
 279         volatile u32    rawpmask;
 280         volatile u32    rawcsrc;
 281         volatile u32    rawmatch;
 282         volatile u32    rawmagn;
 283         volatile u32    rawropblend;
 284         volatile u32    rawcmp;
 285         volatile u32    rawwac;
 286         volatile u32    fbramid;
 287
 288         volatile u32    drawop;
 289         u32             xxx10[2];
 290         volatile u32    fontlpat;
 291         u32             xxx11;
 292         volatile u32    fontxy;
 293         volatile u32    fontw;
 294         volatile u32    fontinc;
 295         volatile u32    font;
 296         u32             xxx12[3];
 297         volatile u32    blend2;
 298         volatile u32    preblend;
 299         volatile u32    stencil;
 300         volatile u32    stencilctl;
 301
 302         u32             xxx13[4];
 303         volatile u32    dcss1;
 304         volatile u32    dcss2;
 305         volatile u32    dcss3;
 306         volatile u32    widpmask;
 307         volatile u32    dcs2;
 308         volatile u32    dcs3;
 309         volatile u32    dcs4;
 310         u32             xxx14;
 311         volatile u32    dcd2;
 312         volatile u32    dcd3;
 313         volatile u32    dcd4;
 314         u32             xxx15;
 315
 316         volatile u32    pattern[32];
 317
 318         u32             xxx16[256];
 319
 320         volatile u32    devid;
 321         u32             xxx17[63];
 322
 323         volatile u32    ucsr;
 324         u32             xxx18[31];
 325
 326         volatile u32    mer;
 327 };
 328
 329 struct ffb_dac {
 330         volatile u32    type;
 331         volatile u32    value;
 332         volatile u32    type2;
 333         volatile u32    value2;
 334 };
 335
 336 struct ffb_par {
 337         spinlock_t              lock;
 338         struct ffb_fbc          *fbc;
 339         struct ffb_dac          *dac;
 340
 341         u32                     flags;
 342 #define FFB_FLAG_AFB            0x00000001
 343 #define FFB_FLAG_BLANKED        0x00000002
 344
 345         u32                     fg_cache __attribute__((aligned (8)));
 346         u32                     bg_cache;
 347         u32                     rop_cache;
 348
 349         int                     fifo_cache;
 350
 351         unsigned long           physbase;
 352         unsigned long           fbsize;
 353
 354         char                    name[64];
 355         int                     prom_node;
 356         int                     prom_parent_node;
 357         int                     dac_rev;
 358         int                     board_type;
 359         struct list_head        list;
 360 };
 361
 362 static void FFBFifo(struct ffb_par *par, int n)
 363 {
 364         struct ffb_fbc *fbc;
 365         int cache = par->fifo_cache;
 366
 367         if (cache - n < 0) {
 368                 fbc = par->fbc;
 369                 do {    cache = (upa_readl(&fbc->ucsr) & FFB_UCSR_FIFO_MASK) - 8;
 370                 } while (cache - n < 0);
 371         }
 372         par->fifo_cache = cache - n;
 373 }
 374
 375 static void FFBWait(struct ffb_par *par)
 376 {
 377         struct ffb_fbc *fbc;
 378         int limit = 10000;
 379
 380         fbc = par->fbc;
 381         do {
 382                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_BUSY) == 0)
 383                         break;
 384                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0) {
 385                         upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 386                 }
 387                 udelay(10);
 388         } while(--limit > 0);
 389 }
 390
 391 static int ffb_sync(struct fb_info *p)
 392 {
 393         struct ffb_par *par = (struct ffb_par *) p->par;
 394
 395         FFBWait(par);
 396         return 0;
 397 }
 398
 399 static __inline__ void ffb_rop(struct ffb_par *par, u32 rop)
 400 {
 401         if (par->rop_cache != rop) {
 402                 FFBFifo(par, 1);
 403                 upa_writel(rop, &par->fbc->rop);
 404                 par->rop_cache = rop;
 405         }
 406 }
 407
 408 static void ffb_switch_from_graph(struct ffb_par *par)
 409 {
 410         struct ffb_fbc *fbc = par->fbc;
 411         struct ffb_dac *dac = par->dac;
 412         unsigned long flags;
 413
 414         spin_lock_irqsave(&par->lock, flags);
 415         FFBWait(par);
 416         par->fifo_cache = 0;
 417         FFBFifo(par, 7);
 418         upa_writel(FFB_PPC_VCE_DISABLE|FFB_PPC_TBE_OPAQUE|
 419                    FFB_PPC_APE_DISABLE|FFB_PPC_CS_CONST,
 420                    &fbc->ppc);
 421         upa_writel(0x2000707f, &fbc->fbc);
 422         upa_writel(par->rop_cache, &fbc->rop);
 423         upa_writel(0xffffffff, &fbc->pmask);
 424         upa_writel((1 << 16) | (0 << 0), &fbc->fontinc);
 425         upa_writel(par->fg_cache, &fbc->fg);
 426         upa_writel(par->bg_cache, &fbc->bg);
 427         FFBWait(par);
 428
 429         /* Disable cursor.  */
 430         upa_writel(0x100, &dac->type2);
 431         if (par->dac_rev <= 2)
 432                 upa_writel(0, &dac->value2);
 433         else
 434                 upa_writel(3, &dac->value2);
 435
 436         spin_unlock_irqrestore(&par->lock, flags);
 437 }
 438
 439 static int ffb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 440 {
 441         struct ffb_par *par = (struct ffb_par *) info->par;
 442
 443         /* We just use this to catch switches out of
 444          * graphics mode.
 445          */
 446         ffb_switch_from_graph(par);
 447
 448         if (var->xoffset || var->yoffset || var->vmode)
 449                 return -EINVAL;
 450         return 0;
 451 }
 452
 453 /**
 454  *      ffb_fillrect - REQUIRED function. Can use generic routines if
 455  *                     non acclerated hardware and packed pixel based.
 456  *                     Draws a rectangle on the screen.
 457  *
 458  *      @info: frame buffer structure that represents a single frame buffer
 459  *      @rect: structure defining the rectagle and operation.
 460  */
 461 static void ffb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 462 {
 463         struct ffb_par *par = (struct ffb_par *) info->par;
 464         struct ffb_fbc *fbc = par->fbc;
 465         unsigned long flags;
 466         u32 fg;
 467
 468         if (rect->rop != ROP_COPY && rect->rop != ROP_XOR)
 469                 BUG();
 470
 471         fg = ((u32 *)info->pseudo_palette)[rect->color];
 472
 473         spin_lock_irqsave(&par->lock, flags);
 474
 475         if (fg != par->fg_cache) {
 476                 FFBFifo(par, 1);
 477                 upa_writel(fg, &fbc->fg);
 478                 par->fg_cache = fg;
 479         }
 480
 481         ffb_rop(par, (rect->rop == ROP_COPY ?
 482                       FFB_ROP_NEW :
 483                       FFB_ROP_NEW_XOR_OLD));
 484
 485         FFBFifo(par, 5);
 486         upa_writel(FFB_DRAWOP_RECTANGLE, &fbc->drawop);
 487         upa_writel(rect->dy, &fbc->by);
 488         upa_writel(rect->dx, &fbc->bx);
 489         upa_writel(rect->height, &fbc->bh);
 490         upa_writel(rect->width, &fbc->bw);
 491
 492         spin_unlock_irqrestore(&par->lock, flags);
 493 }
 494
 495 /**
 496  *      ffb_copyarea - REQUIRED function. Can use generic routines if
 497  *                     non acclerated hardware and packed pixel based.
 498  *                     Copies on area of the screen to another area.
 499  *
 500  *      @info: frame buffer structure that represents a single frame buffer
 501  *      @area: structure defining the source and destination.
 502  */
 503
 504 static void
 505 ffb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 506 {
 507         struct ffb_par *par = (struct ffb_par *) info->par;
 508         struct ffb_fbc *fbc = par->fbc;
 509         unsigned long flags;
 510
 511         if (area->dx != area->sx ||
 512             area->dy == area->sy) {
 513                 cfb_copyarea(info, area);
 514                 return;
 515         }
 516
 517         spin_lock_irqsave(&par->lock, flags);
 518
 519         ffb_rop(par, FFB_ROP_OLD);
 520
 521         FFBFifo(par, 7);
 522         upa_writel(FFB_DRAWOP_VSCROLL, &fbc->drawop);
 523         upa_writel(area->sy, &fbc->by);
 524         upa_writel(area->sx, &fbc->bx);
 525         upa_writel(area->dy, &fbc->dy);
 526         upa_writel(area->dx, &fbc->dx);
 527         upa_writel(area->height, &fbc->bh);
 528         upa_writel(area->width, &fbc->bw);
 529
 530         spin_unlock_irqrestore(&par->lock, flags);
 531 }
 532
 533 /**
 534  *      ffb_imageblit - REQUIRED function. Can use generic routines if
 535  *                      non acclerated hardware and packed pixel based.
 536  *                      Copies a image from system memory to the screen.
 537  *
 538  *      @info: frame buffer structure that represents a single frame buffer
 539  *      @image: structure defining the image.
 540  */
 541 static void ffb_imageblit(struct fb_info *info, const struct fb_image *image)
 542 {
 543         struct ffb_par *par = (struct ffb_par *) info->par;
 544         struct ffb_fbc *fbc = par->fbc;
 545         const u8 *data = image->data;
 546         unsigned long flags;
 547         u32 fg, bg, xy;
 548         u64 fgbg;
 549         int i, width, stride;
 550
 551         if (image->depth > 1) {
 552                 cfb_imageblit(info, image);
 553                 return;
 554         }
 555
 556         fg = ((u32 *)info->pseudo_palette)[image->fg_color];
 557         bg = ((u32 *)info->pseudo_palette)[image->bg_color];
 558         fgbg = ((u64) fg << 32) | (u64) bg;
 559         xy = (image->dy << 16) | image->dx;
 560         width = image->width;
 561         stride = ((width + 7) >> 3);
 562
 563         spin_lock_irqsave(&par->lock, flags);
 564
 565         if (fgbg != *(u64 *)&par->fg_cache) {
 566                 FFBFifo(par, 2);
 567                 upa_writeq(fgbg, &fbc->fg);
 568                 *(u64 *)&par->fg_cache = fgbg;
 569         }
 570
 571         if (width >= 32) {
 572                 FFBFifo(par, 1);
 573                 upa_writel(32, &fbc->fontw);
 574         }
 575
 576         while (width >= 32) {
 577                 const u8 *next_data = data + 4;
 578
 579                 FFBFifo(par, 1);
 580                 upa_writel(xy, &fbc->fontxy);
 581                 xy += (32 << 0);
 582
 583                 for (i = 0; i < image->height; i++) {
 584                         u32 val = (((u32)data[0] << 24) |
 585                                    ((u32)data[1] << 16) |
 586                                    ((u32)data[2] <<  8) |
 587                                    ((u32)data[3] <<  0));
 588                         FFBFifo(par, 1);
 589                         upa_writel(val, &fbc->font);
 590
 591                         data += stride;
 592                 }
 593
 594                 data = next_data;
 595                 width -= 32;
 596         }
 597
 598         if (width) {
 599                 FFBFifo(par, 2);
 600                 upa_writel(width, &fbc->fontw);
 601                 upa_writel(xy, &fbc->fontxy);
 602
 603                 for (i = 0; i < image->height; i++) {
 604                         u32 val = (((u32)data[0] << 24) |
 605                                    ((u32)data[1] << 16) |
 606                                    ((u32)data[2] <<  8) |
 607                                    ((u32)data[3] <<  0));
 608                         FFBFifo(par, 1);
 609                         upa_writel(val, &fbc->font);
 610
 611                         data += stride;
 612                 }
 613         }
 614
 615         spin_unlock_irqrestore(&par->lock, flags);
 616 }
 617
 618 static void ffb_fixup_var_rgb(struct fb_var_screeninfo *var)
 619 {
 620         var->red.offset = 0;
 621         var->red.length = 8;
 622         var->green.offset = 8;
 623         var->green.length = 8;
 624         var->blue.offset = 16;
 625         var->blue.length = 8;
 626         var->transp.offset = 0;
 627         var->transp.length = 0;
 628 }
 629
 630 /**
 631  *      ffb_setcolreg - Optional function. Sets a color register.
 632  *      @regno: boolean, 0 copy local, 1 get_user() function
 633  *      @red: frame buffer colormap structure
 634  *      @green: The green value which can be up to 16 bits wide
 635  *      @blue:  The blue value which can be up to 16 bits wide.
 636  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 637  *      @info: frame buffer info structure
 638  */
 639 static int ffb_setcolreg(unsigned regno,
 640                          unsigned red, unsigned green, unsigned blue,
 641                          unsigned transp, struct fb_info *info)
 642 {
 643         u32 value;
 644
 645         if (regno >= 256)
 646                 return 1;
 647
 648         red >>= 8;
 649         green >>= 8;
 650         blue >>= 8;
 651
 652         value = (blue << 16) | (green << 8) | red;
 653         ((u32 *)info->pseudo_palette)[regno] = value;
 654
 655         return 0;
 656 }
 657
 658 /**
 659  *      ffb_blank - Optional function.  Blanks the display.
 660  *      @blank_mode: the blank mode we want.
 661  *      @info: frame buffer structure that represents a single frame buffer
 662  */
 663 static int
 664 ffb_blank(int blank, struct fb_info *info)
 665 {
 666         struct ffb_par *par = (struct ffb_par *) info->par;
 667         struct ffb_dac *dac = par->dac;
 668         unsigned long flags;
 669         u32 tmp;
 670
 671         spin_lock_irqsave(&par->lock, flags);
 672
 673         FFBWait(par);
 674
 675         switch (blank) {
 676         case FB_BLANK_UNBLANK: /* Unblanking */
 677                 upa_writel(0x6000, &dac->type);
 678                 tmp = (upa_readl(&dac->value) | 0x1);
 679                 upa_writel(0x6000, &dac->type);
 680                 upa_writel(tmp, &dac->value);
 681                 par->flags &= ~FFB_FLAG_BLANKED;
 682                 break;
 683
 684         case FB_BLANK_NORMAL: /* Normal blanking */
 685         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 686         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 687         case FB_BLANK_POWERDOWN: /* Poweroff */
 688                 upa_writel(0x6000, &dac->type);
 689                 tmp = (upa_readl(&dac->value) & ~0x1);
 690                 upa_writel(0x6000, &dac->type);
 691                 upa_writel(tmp, &dac->value);
 692                 par->flags |= FFB_FLAG_BLANKED;
 693                 break;
 694         }
 695
 696         spin_unlock_irqrestore(&par->lock, flags);
 697
 698         return 0;
 699 }
 700
 701 static struct sbus_mmap_map ffb_mmap_map[] = {
 702         {
 703                 .voff   = FFB_SFB8R_VOFF,
 704                 .poff   = FFB_SFB8R_POFF,
 705                 .size   = 0x0400000
 706         },
 707         {
 708                 .voff   = FFB_SFB8G_VOFF,
 709                 .poff   = FFB_SFB8G_POFF,
 710                 .size   = 0x0400000
 711         },
 712         {
 713                 .voff   = FFB_SFB8B_VOFF,
 714                 .poff   = FFB_SFB8B_POFF,
 715                 .size   = 0x0400000
 716         },
 717         {
 718                 .voff   = FFB_SFB8X_VOFF,
 719                 .poff   = FFB_SFB8X_POFF,
 720                 .size   = 0x0400000
 721         },
 722         {
 723                 .voff   = FFB_SFB32_VOFF,
 724                 .poff   = FFB_SFB32_POFF,
 725                 .size   = 0x1000000
 726         },
 727         {
 728                 .voff   = FFB_SFB64_VOFF,
 729                 .poff   = FFB_SFB64_POFF,
 730                 .size   = 0x2000000
 731         },
 732         {
 733                 .voff   = FFB_FBC_REGS_VOFF,
 734                 .poff   = FFB_FBC_REGS_POFF,
 735                 .size   = 0x0002000
 736         },
 737         {
 738                 .voff   = FFB_BM_FBC_REGS_VOFF,
 739                 .poff   = FFB_BM_FBC_REGS_POFF,
 740                 .size   = 0x0002000
 741         },
 742         {
 743                 .voff   = FFB_DFB8R_VOFF,
 744                 .poff   = FFB_DFB8R_POFF,
 745                 .size   = 0x0400000
 746         },
 747         {
 748                 .voff   = FFB_DFB8G_VOFF,
 749                 .poff   = FFB_DFB8G_POFF,
 750                 .size   = 0x0400000
 751         },
 752         {
 753                 .voff   = FFB_DFB8B_VOFF,
 754                 .poff   = FFB_DFB8B_POFF,
 755                 .size   = 0x0400000
 756         },
 757         {
 758                 .voff   = FFB_DFB8X_VOFF,
 759                 .poff   = FFB_DFB8X_POFF,
 760                 .size   = 0x0400000
 761         },
 762         {
 763                 .voff   = FFB_DFB24_VOFF,
 764                 .poff   = FFB_DFB24_POFF,
 765                 .size   = 0x1000000
 766         },
 767         {
 768                 .voff   = FFB_DFB32_VOFF,
 769                 .poff   = FFB_DFB32_POFF,
 770                 .size   = 0x1000000
 771         },
 772         {
 773                 .voff   = FFB_FBC_KREGS_VOFF,
 774                 .poff   = FFB_FBC_KREGS_POFF,
 775                 .size   = 0x0002000
 776         },
 777         {
 778                 .voff   = FFB_DAC_VOFF,
 779                 .poff   = FFB_DAC_POFF,
 780                 .size   = 0x0002000
 781         },
 782         {
 783                 .voff   = FFB_PROM_VOFF,
 784                 .poff   = FFB_PROM_POFF,
 785                 .size   = 0x0010000
 786         },
 787         {
 788                 .voff   = FFB_EXP_VOFF,
 789                 .poff   = FFB_EXP_POFF,
 790                 .size   = 0x0002000
 791         },
 792         {
 793                 .voff   = FFB_DFB422A_VOFF,
 794                 .poff   = FFB_DFB422A_POFF,
 795                 .size   = 0x0800000
 796         },
 797         {
 798                 .voff   = FFB_DFB422AD_VOFF,
 799                 .poff   = FFB_DFB422AD_POFF,
 800                 .size   = 0x0800000
 801         },
 802         {
 803                 .voff   = FFB_DFB24B_VOFF,
 804                 .poff   = FFB_DFB24B_POFF,
 805                 .size   = 0x1000000
 806         },
 807         {
 808                 .voff   = FFB_DFB422B_VOFF,
 809                 .poff   = FFB_DFB422B_POFF,
 810                 .size   = 0x0800000
 811         },
 812         {
 813                 .voff   = FFB_DFB422BD_VOFF,
 814                 .poff   = FFB_DFB422BD_POFF,
 815                 .size   = 0x0800000
 816         },
 817         {
 818                 .voff   = FFB_SFB16Z_VOFF,
 819                 .poff   = FFB_SFB16Z_POFF,
 820                 .size   = 0x0800000
 821         },
 822         {
 823                 .voff   = FFB_SFB8Z_VOFF,
 824                 .poff   = FFB_SFB8Z_POFF,
 825                 .size   = 0x0800000
 826         },
 827         {
 828                 .voff   = FFB_SFB422_VOFF,
 829                 .poff   = FFB_SFB422_POFF,
 830                 .size   = 0x0800000
 831         },
 832         {
 833                 .voff   = FFB_SFB422D_VOFF,
 834                 .poff   = FFB_SFB422D_POFF,
 835                 .size   = 0x0800000
 836         },
 837         { .size = 0 }
 838 };
 839
 840 static int ffb_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
 841 {
 842         struct ffb_par *par = (struct ffb_par *)info->par;
 843
 844         return sbusfb_mmap_helper(ffb_mmap_map,
 845                                   par->physbase, par->fbsize,
 846                                   0, vma);
 847 }
 848
 849 static int ffb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 850                      unsigned long arg, struct fb_info *info)
 851 {
 852         struct ffb_par *par = (struct ffb_par *) info->par;
 853
 854         return sbusfb_ioctl_helper(cmd, arg, info,
 855                                    FBTYPE_CREATOR, 24, par->fbsize);
 856 }
 857
 858 /*
 859  *  Initialisation
 860  */
 861
 862 static void
 863 ffb_init_fix(struct fb_info *info)
 864 {
 865         struct ffb_par *par = (struct ffb_par *)info->par;
 866         const char *ffb_type_name;
 867
 868         if (!(par->flags & FFB_FLAG_AFB)) {
 869                 if ((par->board_type & 0x7) == 0x3)
 870                         ffb_type_name = "Creator 3D";
 871                 else
 872                         ffb_type_name = "Creator";
 873         } else
 874                 ffb_type_name = "Elite 3D";
 875
 876         strlcpy(info->fix.id, ffb_type_name, sizeof(info->fix.id));
 877
 878         info->fix.type = FB_TYPE_PACKED_PIXELS;
 879         info->fix.visual = FB_VISUAL_TRUECOLOR;
 880
 881         /* Framebuffer length is the same regardless of resolution. */
 882         info->fix.line_length = 8192;
 883
 884         info->fix.accel = FB_ACCEL_SUN_CREATOR;
 885 }
 886
 887 static int ffb_apply_upa_parent_ranges(int parent,
 888                                        struct linux_prom64_registers *regs)
 889 {
 890         struct linux_prom64_ranges ranges[PROMREG_MAX];
 891         char name[128];
 892         int len, i;
 893
 894         prom_getproperty(parent, "name", name, sizeof(name));
 895         if (strcmp(name, "upa") != 0)
 896                 return 0;
 897
 898         len = prom_getproperty(parent, "ranges", (void *) ranges, sizeof(ranges));
 899         if (len <= 0)
 900                 return 1;
 901
 902         len /= sizeof(struct linux_prom64_ranges);
 903         for (i = 0; i < len; i++) {
 904                 struct linux_prom64_ranges *rng = &ranges[i];
 905                 u64 phys_addr = regs->phys_addr;
 906
 907                 if (phys_addr >= rng->ot_child_base &&
 908                     phys_addr < (rng->ot_child_base + rng->or_size)) {
 909                         regs->phys_addr -= rng->ot_child_base;
 910                         regs->phys_addr += rng->ot_parent_base;
 911                         return 0;
 912                 }
 913         }
 914
 915         return 1;
 916 }
 917
 918 struct all_info {
 919         struct fb_info info;
 920         struct ffb_par par;
 921         u32 pseudo_palette[256];
 922         struct list_head list;
 923 };
 924 static LIST_HEAD(ffb_list);
 925
 926 static void ffb_init_one(int node, int parent)
 927 {
 928         struct linux_prom64_registers regs[2*PROMREG_MAX];
 929         struct ffb_fbc *fbc;
 930         struct ffb_dac *dac;
 931         struct all_info *all;
 932
 933         if (prom_getproperty(node, "reg", (void *) regs, sizeof(regs)) <= 0) {
 934                 printk("ffb: Cannot get reg device node property.\n");
 935                 return;
 936         }
 937
 938         if (ffb_apply_upa_parent_ranges(parent, &regs[0])) {
 939                 printk("ffb: Cannot apply parent ranges to regs.\n");
 940                 return;
 941         }
 942
 943         all = kmalloc(sizeof(*all), GFP_KERNEL);
 944         if (!all) {
 945                 printk(KERN_ERR "ffb: Cannot allocate memory.\n");
 946                 return;
 947         }
 948         memset(all, 0, sizeof(*all));
 949
 950         INIT_LIST_HEAD(&all->list);
 951
 952         spin_lock_init(&all->par.lock);
 953         all->par.fbc = (struct ffb_fbc *)(regs[0].phys_addr + FFB_FBC_REGS_POFF);
 954         all->par.dac = (struct ffb_dac *)(regs[0].phys_addr + FFB_DAC_POFF);
 955         all->par.rop_cache = FFB_ROP_NEW;
 956         all->par.physbase = regs[0].phys_addr;
 957         all->par.prom_node = node;
 958         all->par.prom_parent_node = parent;
 959
 960         /* Don't mention copyarea, so SCROLL_REDRAW is always
 961          * used.  It is the fastest on this chip.
 962          */
 963         all->info.flags = (FBINFO_DEFAULT |
 964                            /* FBINFO_HWACCEL_COPYAREA | */
 965                            FBINFO_HWACCEL_FILLRECT |
 966                            FBINFO_HWACCEL_IMAGEBLIT);
 967         all->info.fbops = &ffb_ops;
 968         all->info.screen_base = (char *) all->par.physbase + FFB_DFB24_POFF;
 969         all->info.par = &all->par;
 970         all->info.pseudo_palette = all->pseudo_palette;
 971
 972         sbusfb_fill_var(&all->info.var, all->par.prom_node, 32);
 973         all->par.fbsize = PAGE_ALIGN(all->info.var.xres *
 974                                      all->info.var.yres *
 975                                      4);
 976         ffb_fixup_var_rgb(&all->info.var);
 977
 978         all->info.var.accel_flags = FB_ACCELF_TEXT;
 979
 980         prom_getstring(node, "name", all->par.name, sizeof(all->par.name));
 981         if (!strcmp(all->par.name, "SUNW,afb"))
 982                 all->par.flags |= FFB_FLAG_AFB;
 983
 984         all->par.board_type = prom_getintdefault(node, "board_type", 0);
 985
 986         fbc = all->par.fbc;
 987         if((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
 988                 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 989
 990         ffb_switch_from_graph(&all->par);
 991
 992         dac = all->par.dac;
 993         upa_writel(0x8000, &dac->type);
 994         all->par.dac_rev = upa_readl(&dac->value) >> 0x1c;
 995
 996         /* Elite3D has different DAC revision numbering, and no DAC revisions
 997          * have the reversed meaning of cursor enable.
 998          */
 999         if (all->par.flags & FFB_FLAG_AFB)
1000                 all->par.dac_rev = 10;
1001
1002         /* Unblank it just to be sure.  When there are multiple
1003          * FFB/AFB cards in the system, or it is not the OBP
1004          * chosen console, it will have video outputs off in
1005          * the DAC.
1006          */
1007         ffb_blank(0, &all->info);
1008
1009         if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
1010                 printk(KERN_ERR "ffb: Could not allocate color map.\n");
1011                 kfree(all);
1012                 return;
1013         }
1014
1015         ffb_init_fix(&all->info);
1016
1017         if (register_framebuffer(&all->info) < 0) {
1018                 printk(KERN_ERR "ffb: Could not register framebuffer.\n");
1019                 fb_dealloc_cmap(&all->info.cmap);
1020                 kfree(all);
1021                 return;
1022         }
1023
1024         list_add(&all->list, &ffb_list);
1025
1026         printk("ffb: %s at %016lx type %d DAC %d\n",
1027                ((all->par.flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
1028                regs[0].phys_addr, all->par.board_type, all->par.dac_rev);
1029 }
1030
1031 static void ffb_scan_siblings(int root)
1032 {
1033         int node, child;
1034
1035         child = prom_getchild(root);
1036         for (node = prom_searchsiblings(child, "SUNW,ffb"); node;
1037              node = prom_searchsiblings(prom_getsibling(node), "SUNW,ffb"))
1038                 ffb_init_one(node, root);
1039         for (node = prom_searchsiblings(child, "SUNW,afb"); node;
1040              node = prom_searchsiblings(prom_getsibling(node), "SUNW,afb"))
1041                 ffb_init_one(node, root);
1042 }
1043
1044 int __init ffb_init(void)
1045 {
1046         int root;
1047
1048         if (fb_get_options("ffb", NULL))
1049                 return -ENODEV;
1050
1051         ffb_scan_siblings(prom_root_node);
1052
1053         root = prom_getchild(prom_root_node);
1054         for (root = prom_searchsiblings(root, "upa"); root;
1055              root = prom_searchsiblings(prom_getsibling(root), "upa"))
1056                 ffb_scan_siblings(root);
1057
1058         return 0;
1059 }
1060
1061 void __exit ffb_exit(void)
1062 {
1063         struct list_head *pos, *tmp;
1064
1065         list_for_each_safe(pos, tmp, &ffb_list) {
1066                 struct all_info *all = list_entry(pos, typeof(*all), list);
1067
1068                 unregister_framebuffer(&all->info);
1069                 fb_dealloc_cmap(&all->info.cmap);
1070                 kfree(all);
1071         }
1072 }
1073
1074 int __init
1075 ffb_setup(char *arg)
1076 {
1077         /* No cmdline options yet... */
1078         return 0;
1079 }
1080
1081 module_init(ffb_init);
1082
1083 #ifdef MODULE
1084 module_exit(ffb_exit);
1085 #endif
1086
1087 MODULE_DESCRIPTION("framebuffer driver for Creator/Elite3D chipsets");
1088 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
1089 MODULE_LICENSE("GPL");