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   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         /* XXX Use FFB hw cursor once fb cursor API is better understood... */
  62         .fb_cursor              = soft_cursor,
  63 };
  64
  65 /* Register layout and definitions */
  66 #define FFB_SFB8R_VOFF          0x00000000
  67 #define FFB_SFB8G_VOFF          0x00400000
  68 #define FFB_SFB8B_VOFF          0x00800000
  69 #define FFB_SFB8X_VOFF          0x00c00000
  70 #define FFB_SFB32_VOFF          0x01000000
  71 #define FFB_SFB64_VOFF          0x02000000
  72 #define FFB_FBC_REGS_VOFF       0x04000000
  73 #define FFB_BM_FBC_REGS_VOFF    0x04002000
  74 #define FFB_DFB8R_VOFF          0x04004000
  75 #define FFB_DFB8G_VOFF          0x04404000
  76 #define FFB_DFB8B_VOFF          0x04804000
  77 #define FFB_DFB8X_VOFF          0x04c04000
  78 #define FFB_DFB24_VOFF          0x05004000
  79 #define FFB_DFB32_VOFF          0x06004000
  80 #define FFB_DFB422A_VOFF        0x07004000      /* DFB 422 mode write to A */
  81 #define FFB_DFB422AD_VOFF       0x07804000      /* DFB 422 mode with line doubling */
  82 #define FFB_DFB24B_VOFF         0x08004000      /* DFB 24bit mode write to B */
  83 #define FFB_DFB422B_VOFF        0x09004000      /* DFB 422 mode write to B */
  84 #define FFB_DFB422BD_VOFF       0x09804000      /* DFB 422 mode with line doubling */
  85 #define FFB_SFB16Z_VOFF         0x0a004000      /* 16bit mode Z planes */
  86 #define FFB_SFB8Z_VOFF          0x0a404000      /* 8bit mode Z planes */
  87 #define FFB_SFB422_VOFF         0x0ac04000      /* SFB 422 mode write to A/B */
  88 #define FFB_SFB422D_VOFF        0x0b404000      /* SFB 422 mode with line doubling */
  89 #define FFB_FBC_KREGS_VOFF      0x0bc04000
  90 #define FFB_DAC_VOFF            0x0bc06000
  91 #define FFB_PROM_VOFF           0x0bc08000
  92 #define FFB_EXP_VOFF            0x0bc18000
  93
  94 #define FFB_SFB8R_POFF          0x04000000UL
  95 #define FFB_SFB8G_POFF          0x04400000UL
  96 #define FFB_SFB8B_POFF          0x04800000UL
  97 #define FFB_SFB8X_POFF          0x04c00000UL
  98 #define FFB_SFB32_POFF          0x05000000UL
  99 #define FFB_SFB64_POFF          0x06000000UL
 100 #define FFB_FBC_REGS_POFF       0x00600000UL
 101 #define FFB_BM_FBC_REGS_POFF    0x00600000UL
 102 #define FFB_DFB8R_POFF          0x01000000UL
 103 #define FFB_DFB8G_POFF          0x01400000UL
 104 #define FFB_DFB8B_POFF          0x01800000UL
 105 #define FFB_DFB8X_POFF          0x01c00000UL
 106 #define FFB_DFB24_POFF          0x02000000UL
 107 #define FFB_DFB32_POFF          0x03000000UL
 108 #define FFB_FBC_KREGS_POFF      0x00610000UL
 109 #define FFB_DAC_POFF            0x00400000UL
 110 #define FFB_PROM_POFF           0x00000000UL
 111 #define FFB_EXP_POFF            0x00200000UL
 112 #define FFB_DFB422A_POFF        0x09000000UL
 113 #define FFB_DFB422AD_POFF       0x09800000UL
 114 #define FFB_DFB24B_POFF         0x0a000000UL
 115 #define FFB_DFB422B_POFF        0x0b000000UL
 116 #define FFB_DFB422BD_POFF       0x0b800000UL
 117 #define FFB_SFB16Z_POFF         0x0c800000UL
 118 #define FFB_SFB8Z_POFF          0x0c000000UL
 119 #define FFB_SFB422_POFF         0x0d000000UL
 120 #define FFB_SFB422D_POFF        0x0d800000UL
 121
 122 /* Draw operations */
 123 #define FFB_DRAWOP_DOT          0x00
 124 #define FFB_DRAWOP_AADOT        0x01
 125 #define FFB_DRAWOP_BRLINECAP    0x02
 126 #define FFB_DRAWOP_BRLINEOPEN   0x03
 127 #define FFB_DRAWOP_DDLINE       0x04
 128 #define FFB_DRAWOP_AALINE       0x05
 129 #define FFB_DRAWOP_TRIANGLE     0x06
 130 #define FFB_DRAWOP_POLYGON      0x07
 131 #define FFB_DRAWOP_RECTANGLE    0x08
 132 #define FFB_DRAWOP_FASTFILL     0x09
 133 #define FFB_DRAWOP_BCOPY        0x0a
 134 #define FFB_DRAWOP_VSCROLL      0x0b
 135
 136 /* Pixel processor control */
 137 /* Force WID */
 138 #define FFB_PPC_FW_DISABLE      0x800000
 139 #define FFB_PPC_FW_ENABLE       0xc00000
 140 /* Auxiliary clip */
 141 #define FFB_PPC_ACE_DISABLE     0x040000
 142 #define FFB_PPC_ACE_AUX_SUB     0x080000
 143 #define FFB_PPC_ACE_AUX_ADD     0x0c0000
 144 /* Depth cue */
 145 #define FFB_PPC_DCE_DISABLE     0x020000
 146 #define FFB_PPC_DCE_ENABLE      0x030000
 147 /* Alpha blend */
 148 #define FFB_PPC_ABE_DISABLE     0x008000
 149 #define FFB_PPC_ABE_ENABLE      0x00c000
 150 /* View clip */
 151 #define FFB_PPC_VCE_DISABLE     0x001000
 152 #define FFB_PPC_VCE_2D          0x002000
 153 #define FFB_PPC_VCE_3D          0x003000
 154 /* Area pattern */
 155 #define FFB_PPC_APE_DISABLE     0x000800
 156 #define FFB_PPC_APE_ENABLE      0x000c00
 157 /* Transparent background */
 158 #define FFB_PPC_TBE_OPAQUE      0x000200
 159 #define FFB_PPC_TBE_TRANSPARENT 0x000300
 160 /* Z source */
 161 #define FFB_PPC_ZS_VAR          0x000080
 162 #define FFB_PPC_ZS_CONST        0x0000c0
 163 /* Y source */
 164 #define FFB_PPC_YS_VAR          0x000020
 165 #define FFB_PPC_YS_CONST        0x000030
 166 /* X source */
 167 #define FFB_PPC_XS_WID          0x000004
 168 #define FFB_PPC_XS_VAR          0x000008
 169 #define FFB_PPC_XS_CONST        0x00000c
 170 /* Color (BGR) source */
 171 #define FFB_PPC_CS_VAR          0x000002
 172 #define FFB_PPC_CS_CONST        0x000003
 173
 174 #define FFB_ROP_NEW                  0x83
 175 #define FFB_ROP_OLD                  0x85
 176 #define FFB_ROP_NEW_XOR_OLD          0x86
 177
 178 #define FFB_UCSR_FIFO_MASK     0x00000fff
 179 #define FFB_UCSR_FB_BUSY       0x01000000
 180 #define FFB_UCSR_RP_BUSY       0x02000000
 181 #define FFB_UCSR_ALL_BUSY      (FFB_UCSR_RP_BUSY|FFB_UCSR_FB_BUSY)
 182 #define FFB_UCSR_READ_ERR      0x40000000
 183 #define FFB_UCSR_FIFO_OVFL     0x80000000
 184 #define FFB_UCSR_ALL_ERRORS    (FFB_UCSR_READ_ERR|FFB_UCSR_FIFO_OVFL)
 185
 186 struct ffb_fbc {
 187         /* Next vertex registers */
 188         u32             xxx1[3];
 189         volatile u32    alpha;
 190         volatile u32    red;
 191         volatile u32    green;
 192         volatile u32    blue;
 193         volatile u32    depth;
 194         volatile u32    y;
 195         volatile u32    x;
 196         u32             xxx2[2];
 197         volatile u32    ryf;
 198         volatile u32    rxf;
 199         u32             xxx3[2];
 200
 201         volatile u32    dmyf;
 202         volatile u32    dmxf;
 203         u32             xxx4[2];
 204         volatile u32    ebyi;
 205         volatile u32    ebxi;
 206         u32             xxx5[2];
 207         volatile u32    by;
 208         volatile u32    bx;
 209         u32             dy;
 210         u32             dx;
 211         volatile u32    bh;
 212         volatile u32    bw;
 213         u32             xxx6[2];
 214
 215         u32             xxx7[32];
 216
 217         /* Setup unit vertex state register */
 218         volatile u32    suvtx;
 219         u32             xxx8[63];
 220
 221         /* Control registers */
 222         volatile u32    ppc;
 223         volatile u32    wid;
 224         volatile u32    fg;
 225         volatile u32    bg;
 226         volatile u32    consty;
 227         volatile u32    constz;
 228         volatile u32    xclip;
 229         volatile u32    dcss;
 230         volatile u32    vclipmin;
 231         volatile u32    vclipmax;
 232         volatile u32    vclipzmin;
 233         volatile u32    vclipzmax;
 234         volatile u32    dcsf;
 235         volatile u32    dcsb;
 236         volatile u32    dczf;
 237         volatile u32    dczb;
 238
 239         u32             xxx9;
 240         volatile u32    blendc;
 241         volatile u32    blendc1;
 242         volatile u32    blendc2;
 243         volatile u32    fbramitc;
 244         volatile u32    fbc;
 245         volatile u32    rop;
 246         volatile u32    cmp;
 247         volatile u32    matchab;
 248         volatile u32    matchc;
 249         volatile u32    magnab;
 250         volatile u32    magnc;
 251         volatile u32    fbcfg0;
 252         volatile u32    fbcfg1;
 253         volatile u32    fbcfg2;
 254         volatile u32    fbcfg3;
 255
 256         u32             ppcfg;
 257         volatile u32    pick;
 258         volatile u32    fillmode;
 259         volatile u32    fbramwac;
 260         volatile u32    pmask;
 261         volatile u32    xpmask;
 262         volatile u32    ypmask;
 263         volatile u32    zpmask;
 264         volatile u32    clip0min;
 265         volatile u32    clip0max;
 266         volatile u32    clip1min;
 267         volatile u32    clip1max;
 268         volatile u32    clip2min;
 269         volatile u32    clip2max;
 270         volatile u32    clip3min;
 271         volatile u32    clip3max;
 272
 273         /* New 3dRAM III support regs */
 274         volatile u32    rawblend2;
 275         volatile u32    rawpreblend;
 276         volatile u32    rawstencil;
 277         volatile u32    rawstencilctl;
 278         volatile u32    threedram1;
 279         volatile u32    threedram2;
 280         volatile u32    passin;
 281         volatile u32    rawclrdepth;
 282         volatile u32    rawpmask;
 283         volatile u32    rawcsrc;
 284         volatile u32    rawmatch;
 285         volatile u32    rawmagn;
 286         volatile u32    rawropblend;
 287         volatile u32    rawcmp;
 288         volatile u32    rawwac;
 289         volatile u32    fbramid;
 290
 291         volatile u32    drawop;
 292         u32             xxx10[2];
 293         volatile u32    fontlpat;
 294         u32             xxx11;
 295         volatile u32    fontxy;
 296         volatile u32    fontw;
 297         volatile u32    fontinc;
 298         volatile u32    font;
 299         u32             xxx12[3];
 300         volatile u32    blend2;
 301         volatile u32    preblend;
 302         volatile u32    stencil;
 303         volatile u32    stencilctl;
 304
 305         u32             xxx13[4];
 306         volatile u32    dcss1;
 307         volatile u32    dcss2;
 308         volatile u32    dcss3;
 309         volatile u32    widpmask;
 310         volatile u32    dcs2;
 311         volatile u32    dcs3;
 312         volatile u32    dcs4;
 313         u32             xxx14;
 314         volatile u32    dcd2;
 315         volatile u32    dcd3;
 316         volatile u32    dcd4;
 317         u32             xxx15;
 318
 319         volatile u32    pattern[32];
 320
 321         u32             xxx16[256];
 322
 323         volatile u32    devid;
 324         u32             xxx17[63];
 325
 326         volatile u32    ucsr;
 327         u32             xxx18[31];
 328
 329         volatile u32    mer;
 330 };
 331
 332 struct ffb_dac {
 333         volatile u32    type;
 334         volatile u32    value;
 335         volatile u32    type2;
 336         volatile u32    value2;
 337 };
 338
 339 struct ffb_par {
 340         spinlock_t              lock;
 341         struct ffb_fbc          *fbc;
 342         struct ffb_dac          *dac;
 343
 344         u32                     flags;
 345 #define FFB_FLAG_AFB            0x00000001
 346 #define FFB_FLAG_BLANKED        0x00000002
 347
 348         u32                     fg_cache __attribute__((aligned (8)));
 349         u32                     bg_cache;
 350         u32                     rop_cache;
 351
 352         int                     fifo_cache;
 353
 354         unsigned long           physbase;
 355         unsigned long           fbsize;
 356
 357         char                    name[64];
 358         int                     prom_node;
 359         int                     prom_parent_node;
 360         int                     dac_rev;
 361         int                     board_type;
 362         struct list_head        list;
 363 };
 364
 365 static void FFBFifo(struct ffb_par *par, int n)
 366 {
 367         struct ffb_fbc *fbc;
 368         int cache = par->fifo_cache;
 369
 370         if (cache - n < 0) {
 371                 fbc = par->fbc;
 372                 do {    cache = (upa_readl(&fbc->ucsr) & FFB_UCSR_FIFO_MASK) - 8;
 373                 } while (cache - n < 0);
 374         }
 375         par->fifo_cache = cache - n;
 376 }
 377
 378 static void FFBWait(struct ffb_par *par)
 379 {
 380         struct ffb_fbc *fbc;
 381         int limit = 10000;
 382
 383         fbc = par->fbc;
 384         do {
 385                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_BUSY) == 0)
 386                         break;
 387                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0) {
 388                         upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 389                 }
 390                 udelay(10);
 391         } while(--limit > 0);
 392 }
 393
 394 static int ffb_sync(struct fb_info *p)
 395 {
 396         struct ffb_par *par = (struct ffb_par *) p->par;
 397
 398         FFBWait(par);
 399         return 0;
 400 }
 401
 402 static __inline__ void ffb_rop(struct ffb_par *par, u32 rop)
 403 {
 404         if (par->rop_cache != rop) {
 405                 FFBFifo(par, 1);
 406                 upa_writel(rop, &par->fbc->rop);
 407                 par->rop_cache = rop;
 408         }
 409 }
 410
 411 static void ffb_switch_from_graph(struct ffb_par *par)
 412 {
 413         struct ffb_fbc *fbc = par->fbc;
 414         struct ffb_dac *dac = par->dac;
 415         unsigned long flags;
 416
 417         spin_lock_irqsave(&par->lock, flags);
 418         FFBWait(par);
 419         par->fifo_cache = 0;
 420         FFBFifo(par, 7);
 421         upa_writel(FFB_PPC_VCE_DISABLE|FFB_PPC_TBE_OPAQUE|
 422                    FFB_PPC_APE_DISABLE|FFB_PPC_CS_CONST,
 423                    &fbc->ppc);
 424         upa_writel(0x2000707f, &fbc->fbc);
 425         upa_writel(par->rop_cache, &fbc->rop);
 426         upa_writel(0xffffffff, &fbc->pmask);
 427         upa_writel((1 << 16) | (0 << 0), &fbc->fontinc);
 428         upa_writel(par->fg_cache, &fbc->fg);
 429         upa_writel(par->bg_cache, &fbc->bg);
 430         FFBWait(par);
 431
 432         /* Disable cursor.  */
 433         upa_writel(0x100, &dac->type2);
 434         if (par->dac_rev <= 2)
 435                 upa_writel(0, &dac->value2);
 436         else
 437                 upa_writel(3, &dac->value2);
 438
 439         spin_unlock_irqrestore(&par->lock, flags);
 440 }
 441
 442 static int ffb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 443 {
 444         struct ffb_par *par = (struct ffb_par *) info->par;
 445
 446         /* We just use this to catch switches out of
 447          * graphics mode.
 448          */
 449         ffb_switch_from_graph(par);
 450
 451         if (var->xoffset || var->yoffset || var->vmode)
 452                 return -EINVAL;
 453         return 0;
 454 }
 455
 456 /**
 457  *      ffb_fillrect - REQUIRED function. Can use generic routines if
 458  *                     non acclerated hardware and packed pixel based.
 459  *                     Draws a rectangle on the screen.
 460  *
 461  *      @info: frame buffer structure that represents a single frame buffer
 462  *      @rect: structure defining the rectagle and operation.
 463  */
 464 static void ffb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 465 {
 466         struct ffb_par *par = (struct ffb_par *) info->par;
 467         struct ffb_fbc *fbc = par->fbc;
 468         unsigned long flags;
 469         u32 fg;
 470
 471         if (rect->rop != ROP_COPY && rect->rop != ROP_XOR)
 472                 BUG();
 473
 474         fg = ((u32 *)info->pseudo_palette)[rect->color];
 475
 476         spin_lock_irqsave(&par->lock, flags);
 477
 478         if (fg != par->fg_cache) {
 479                 FFBFifo(par, 1);
 480                 upa_writel(fg, &fbc->fg);
 481                 par->fg_cache = fg;
 482         }
 483
 484         ffb_rop(par, (rect->rop == ROP_COPY ?
 485                       FFB_ROP_NEW :
 486                       FFB_ROP_NEW_XOR_OLD));
 487
 488         FFBFifo(par, 5);
 489         upa_writel(FFB_DRAWOP_RECTANGLE, &fbc->drawop);
 490         upa_writel(rect->dy, &fbc->by);
 491         upa_writel(rect->dx, &fbc->bx);
 492         upa_writel(rect->height, &fbc->bh);
 493         upa_writel(rect->width, &fbc->bw);
 494
 495         spin_unlock_irqrestore(&par->lock, flags);
 496 }
 497
 498 /**
 499  *      ffb_copyarea - REQUIRED function. Can use generic routines if
 500  *                     non acclerated hardware and packed pixel based.
 501  *                     Copies on area of the screen to another area.
 502  *
 503  *      @info: frame buffer structure that represents a single frame buffer
 504  *      @area: structure defining the source and destination.
 505  */
 506
 507 static void
 508 ffb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 509 {
 510         struct ffb_par *par = (struct ffb_par *) info->par;
 511         struct ffb_fbc *fbc = par->fbc;
 512         unsigned long flags;
 513
 514         if (area->dx != area->sx ||
 515             area->dy == area->sy) {
 516                 cfb_copyarea(info, area);
 517                 return;
 518         }
 519
 520         spin_lock_irqsave(&par->lock, flags);
 521
 522         ffb_rop(par, FFB_ROP_OLD);
 523
 524         FFBFifo(par, 7);
 525         upa_writel(FFB_DRAWOP_VSCROLL, &fbc->drawop);
 526         upa_writel(area->sy, &fbc->by);
 527         upa_writel(area->sx, &fbc->bx);
 528         upa_writel(area->dy, &fbc->dy);
 529         upa_writel(area->dx, &fbc->dx);
 530         upa_writel(area->height, &fbc->bh);
 531         upa_writel(area->width, &fbc->bw);
 532
 533         spin_unlock_irqrestore(&par->lock, flags);
 534 }
 535
 536 /**
 537  *      ffb_imageblit - REQUIRED function. Can use generic routines if
 538  *                      non acclerated hardware and packed pixel based.
 539  *                      Copies a image from system memory to the screen.
 540  *
 541  *      @info: frame buffer structure that represents a single frame buffer
 542  *      @image: structure defining the image.
 543  */
 544 static void ffb_imageblit(struct fb_info *info, const struct fb_image *image)
 545 {
 546         struct ffb_par *par = (struct ffb_par *) info->par;
 547         struct ffb_fbc *fbc = par->fbc;
 548         const u8 *data = image->data;
 549         unsigned long flags;
 550         u32 fg, bg, xy;
 551         u64 fgbg;
 552         int i, width, stride;
 553
 554         if (image->depth > 1) {
 555                 cfb_imageblit(info, image);
 556                 return;
 557         }
 558
 559         fg = ((u32 *)info->pseudo_palette)[image->fg_color];
 560         bg = ((u32 *)info->pseudo_palette)[image->bg_color];
 561         fgbg = ((u64) fg << 32) | (u64) bg;
 562         xy = (image->dy << 16) | image->dx;
 563         width = image->width;
 564         stride = ((width + 7) >> 3);
 565
 566         spin_lock_irqsave(&par->lock, flags);
 567
 568         if (fgbg != *(u64 *)&par->fg_cache) {
 569                 FFBFifo(par, 2);
 570                 upa_writeq(fgbg, &fbc->fg);
 571                 *(u64 *)&par->fg_cache = fgbg;
 572         }
 573
 574         if (width >= 32) {
 575                 FFBFifo(par, 1);
 576                 upa_writel(32, &fbc->fontw);
 577         }
 578
 579         while (width >= 32) {
 580                 const u8 *next_data = data + 4;
 581
 582                 FFBFifo(par, 1);
 583                 upa_writel(xy, &fbc->fontxy);
 584                 xy += (32 << 0);
 585
 586                 for (i = 0; i < image->height; i++) {
 587                         u32 val = (((u32)data[0] << 24) |
 588                                    ((u32)data[1] << 16) |
 589                                    ((u32)data[2] <<  8) |
 590                                    ((u32)data[3] <<  0));
 591                         FFBFifo(par, 1);
 592                         upa_writel(val, &fbc->font);
 593
 594                         data += stride;
 595                 }
 596
 597                 data = next_data;
 598                 width -= 32;
 599         }
 600
 601         if (width) {
 602                 FFBFifo(par, 2);
 603                 upa_writel(width, &fbc->fontw);
 604                 upa_writel(xy, &fbc->fontxy);
 605
 606                 for (i = 0; i < image->height; i++) {
 607                         u32 val = (((u32)data[0] << 24) |
 608                                    ((u32)data[1] << 16) |
 609                                    ((u32)data[2] <<  8) |
 610                                    ((u32)data[3] <<  0));
 611                         FFBFifo(par, 1);
 612                         upa_writel(val, &fbc->font);
 613
 614                         data += stride;
 615                 }
 616         }
 617
 618         spin_unlock_irqrestore(&par->lock, flags);
 619 }
 620
 621 static void ffb_fixup_var_rgb(struct fb_var_screeninfo *var)
 622 {
 623         var->red.offset = 0;
 624         var->red.length = 8;
 625         var->green.offset = 8;
 626         var->green.length = 8;
 627         var->blue.offset = 16;
 628         var->blue.length = 8;
 629         var->transp.offset = 0;
 630         var->transp.length = 0;
 631 }
 632
 633 /**
 634  *      ffb_setcolreg - Optional function. Sets a color register.
 635  *      @regno: boolean, 0 copy local, 1 get_user() function
 636  *      @red: frame buffer colormap structure
 637  *      @green: The green value which can be up to 16 bits wide
 638  *      @blue:  The blue value which can be up to 16 bits wide.
 639  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 640  *      @info: frame buffer info structure
 641  */
 642 static int ffb_setcolreg(unsigned regno,
 643                          unsigned red, unsigned green, unsigned blue,
 644                          unsigned transp, struct fb_info *info)
 645 {
 646         u32 value;
 647
 648         if (regno >= 256)
 649                 return 1;
 650
 651         red >>= 8;
 652         green >>= 8;
 653         blue >>= 8;
 654
 655         value = (blue << 16) | (green << 8) | red;
 656         ((u32 *)info->pseudo_palette)[regno] = value;
 657
 658         return 0;
 659 }
 660
 661 /**
 662  *      ffb_blank - Optional function.  Blanks the display.
 663  *      @blank_mode: the blank mode we want.
 664  *      @info: frame buffer structure that represents a single frame buffer
 665  */
 666 static int
 667 ffb_blank(int blank, struct fb_info *info)
 668 {
 669         struct ffb_par *par = (struct ffb_par *) info->par;
 670         struct ffb_dac *dac = par->dac;
 671         unsigned long flags;
 672         u32 tmp;
 673
 674         spin_lock_irqsave(&par->lock, flags);
 675
 676         FFBWait(par);
 677
 678         switch (blank) {
 679         case FB_BLANK_UNBLANK: /* Unblanking */
 680                 upa_writel(0x6000, &dac->type);
 681                 tmp = (upa_readl(&dac->value) | 0x1);
 682                 upa_writel(0x6000, &dac->type);
 683                 upa_writel(tmp, &dac->value);
 684                 par->flags &= ~FFB_FLAG_BLANKED;
 685                 break;
 686
 687         case FB_BLANK_NORMAL: /* Normal blanking */
 688         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 689         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 690         case FB_BLANK_POWERDOWN: /* Poweroff */
 691                 upa_writel(0x6000, &dac->type);
 692                 tmp = (upa_readl(&dac->value) & ~0x1);
 693                 upa_writel(0x6000, &dac->type);
 694                 upa_writel(tmp, &dac->value);
 695                 par->flags |= FFB_FLAG_BLANKED;
 696                 break;
 697         }
 698
 699         spin_unlock_irqrestore(&par->lock, flags);
 700
 701         return 0;
 702 }
 703
 704 static struct sbus_mmap_map ffb_mmap_map[] = {
 705         {
 706                 .voff   = FFB_SFB8R_VOFF,
 707                 .poff   = FFB_SFB8R_POFF,
 708                 .size   = 0x0400000
 709         },
 710         {
 711                 .voff   = FFB_SFB8G_VOFF,
 712                 .poff   = FFB_SFB8G_POFF,
 713                 .size   = 0x0400000
 714         },
 715         {
 716                 .voff   = FFB_SFB8B_VOFF,
 717                 .poff   = FFB_SFB8B_POFF,
 718                 .size   = 0x0400000
 719         },
 720         {
 721                 .voff   = FFB_SFB8X_VOFF,
 722                 .poff   = FFB_SFB8X_POFF,
 723                 .size   = 0x0400000
 724         },
 725         {
 726                 .voff   = FFB_SFB32_VOFF,
 727                 .poff   = FFB_SFB32_POFF,
 728                 .size   = 0x1000000
 729         },
 730         {
 731                 .voff   = FFB_SFB64_VOFF,
 732                 .poff   = FFB_SFB64_POFF,
 733                 .size   = 0x2000000
 734         },
 735         {
 736                 .voff   = FFB_FBC_REGS_VOFF,
 737                 .poff   = FFB_FBC_REGS_POFF,
 738                 .size   = 0x0002000
 739         },
 740         {
 741                 .voff   = FFB_BM_FBC_REGS_VOFF,
 742                 .poff   = FFB_BM_FBC_REGS_POFF,
 743                 .size   = 0x0002000
 744         },
 745         {
 746                 .voff   = FFB_DFB8R_VOFF,
 747                 .poff   = FFB_DFB8R_POFF,
 748                 .size   = 0x0400000
 749         },
 750         {
 751                 .voff   = FFB_DFB8G_VOFF,
 752                 .poff   = FFB_DFB8G_POFF,
 753                 .size   = 0x0400000
 754         },
 755         {
 756                 .voff   = FFB_DFB8B_VOFF,
 757                 .poff   = FFB_DFB8B_POFF,
 758                 .size   = 0x0400000
 759         },
 760         {
 761                 .voff   = FFB_DFB8X_VOFF,
 762                 .poff   = FFB_DFB8X_POFF,
 763                 .size   = 0x0400000
 764         },
 765         {
 766                 .voff   = FFB_DFB24_VOFF,
 767                 .poff   = FFB_DFB24_POFF,
 768                 .size   = 0x1000000
 769         },
 770         {
 771                 .voff   = FFB_DFB32_VOFF,
 772                 .poff   = FFB_DFB32_POFF,
 773                 .size   = 0x1000000
 774         },
 775         {
 776                 .voff   = FFB_FBC_KREGS_VOFF,
 777                 .poff   = FFB_FBC_KREGS_POFF,
 778                 .size   = 0x0002000
 779         },
 780         {
 781                 .voff   = FFB_DAC_VOFF,
 782                 .poff   = FFB_DAC_POFF,
 783                 .size   = 0x0002000
 784         },
 785         {
 786                 .voff   = FFB_PROM_VOFF,
 787                 .poff   = FFB_PROM_POFF,
 788                 .size   = 0x0010000
 789         },
 790         {
 791                 .voff   = FFB_EXP_VOFF,
 792                 .poff   = FFB_EXP_POFF,
 793                 .size   = 0x0002000
 794         },
 795         {
 796                 .voff   = FFB_DFB422A_VOFF,
 797                 .poff   = FFB_DFB422A_POFF,
 798                 .size   = 0x0800000
 799         },
 800         {
 801                 .voff   = FFB_DFB422AD_VOFF,
 802                 .poff   = FFB_DFB422AD_POFF,
 803                 .size   = 0x0800000
 804         },
 805         {
 806                 .voff   = FFB_DFB24B_VOFF,
 807                 .poff   = FFB_DFB24B_POFF,
 808                 .size   = 0x1000000
 809         },
 810         {
 811                 .voff   = FFB_DFB422B_VOFF,
 812                 .poff   = FFB_DFB422B_POFF,
 813                 .size   = 0x0800000
 814         },
 815         {
 816                 .voff   = FFB_DFB422BD_VOFF,
 817                 .poff   = FFB_DFB422BD_POFF,
 818                 .size   = 0x0800000
 819         },
 820         {
 821                 .voff   = FFB_SFB16Z_VOFF,
 822                 .poff   = FFB_SFB16Z_POFF,
 823                 .size   = 0x0800000
 824         },
 825         {
 826                 .voff   = FFB_SFB8Z_VOFF,
 827                 .poff   = FFB_SFB8Z_POFF,
 828                 .size   = 0x0800000
 829         },
 830         {
 831                 .voff   = FFB_SFB422_VOFF,
 832                 .poff   = FFB_SFB422_POFF,
 833                 .size   = 0x0800000
 834         },
 835         {
 836                 .voff   = FFB_SFB422D_VOFF,
 837                 .poff   = FFB_SFB422D_POFF,
 838                 .size   = 0x0800000
 839         },
 840         { .size = 0 }
 841 };
 842
 843 static int ffb_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
 844 {
 845         struct ffb_par *par = (struct ffb_par *)info->par;
 846
 847         return sbusfb_mmap_helper(ffb_mmap_map,
 848                                   par->physbase, par->fbsize,
 849                                   0, vma);
 850 }
 851
 852 static int ffb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 853                      unsigned long arg, struct fb_info *info)
 854 {
 855         struct ffb_par *par = (struct ffb_par *) info->par;
 856
 857         return sbusfb_ioctl_helper(cmd, arg, info,
 858                                    FBTYPE_CREATOR, 24, par->fbsize);
 859 }
 860
 861 /*
 862  *  Initialisation
 863  */
 864
 865 static void
 866 ffb_init_fix(struct fb_info *info)
 867 {
 868         struct ffb_par *par = (struct ffb_par *)info->par;
 869         const char *ffb_type_name;
 870
 871         if (!(par->flags & FFB_FLAG_AFB)) {
 872                 if ((par->board_type & 0x7) == 0x3)
 873                         ffb_type_name = "Creator 3D";
 874                 else
 875                         ffb_type_name = "Creator";
 876         } else
 877                 ffb_type_name = "Elite 3D";
 878
 879         strlcpy(info->fix.id, ffb_type_name, sizeof(info->fix.id));
 880
 881         info->fix.type = FB_TYPE_PACKED_PIXELS;
 882         info->fix.visual = FB_VISUAL_TRUECOLOR;
 883
 884         /* Framebuffer length is the same regardless of resolution. */
 885         info->fix.line_length = 8192;
 886
 887         info->fix.accel = FB_ACCEL_SUN_CREATOR;
 888 }
 889
 890 static int ffb_apply_upa_parent_ranges(int parent,
 891                                        struct linux_prom64_registers *regs)
 892 {
 893         struct linux_prom64_ranges ranges[PROMREG_MAX];
 894         char name[128];
 895         int len, i;
 896
 897         prom_getproperty(parent, "name", name, sizeof(name));
 898         if (strcmp(name, "upa") != 0)
 899                 return 0;
 900
 901         len = prom_getproperty(parent, "ranges", (void *) ranges, sizeof(ranges));
 902         if (len <= 0)
 903                 return 1;
 904
 905         len /= sizeof(struct linux_prom64_ranges);
 906         for (i = 0; i < len; i++) {
 907                 struct linux_prom64_ranges *rng = &ranges[i];
 908                 u64 phys_addr = regs->phys_addr;
 909
 910                 if (phys_addr >= rng->ot_child_base &&
 911                     phys_addr < (rng->ot_child_base + rng->or_size)) {
 912                         regs->phys_addr -= rng->ot_child_base;
 913                         regs->phys_addr += rng->ot_parent_base;
 914                         return 0;
 915                 }
 916         }
 917
 918         return 1;
 919 }
 920
 921 struct all_info {
 922         struct fb_info info;
 923         struct ffb_par par;
 924         u32 pseudo_palette[256];
 925         struct list_head list;
 926 };
 927 static LIST_HEAD(ffb_list);
 928
 929 static void ffb_init_one(int node, int parent)
 930 {
 931         struct linux_prom64_registers regs[2*PROMREG_MAX];
 932         struct ffb_fbc *fbc;
 933         struct ffb_dac *dac;
 934         struct all_info *all;
 935
 936         if (prom_getproperty(node, "reg", (void *) regs, sizeof(regs)) <= 0) {
 937                 printk("ffb: Cannot get reg device node property.\n");
 938                 return;
 939         }
 940
 941         if (ffb_apply_upa_parent_ranges(parent, &regs[0])) {
 942                 printk("ffb: Cannot apply parent ranges to regs.\n");
 943                 return;
 944         }
 945
 946         all = kmalloc(sizeof(*all), GFP_KERNEL);
 947         if (!all) {
 948                 printk(KERN_ERR "ffb: Cannot allocate memory.\n");
 949                 return;
 950         }
 951         memset(all, 0, sizeof(*all));
 952
 953         INIT_LIST_HEAD(&all->list);
 954
 955         spin_lock_init(&all->par.lock);
 956         all->par.fbc = (struct ffb_fbc *)(regs[0].phys_addr + FFB_FBC_REGS_POFF);
 957         all->par.dac = (struct ffb_dac *)(regs[0].phys_addr + FFB_DAC_POFF);
 958         all->par.rop_cache = FFB_ROP_NEW;
 959         all->par.physbase = regs[0].phys_addr;
 960         all->par.prom_node = node;
 961         all->par.prom_parent_node = parent;
 962
 963         /* Don't mention copyarea, so SCROLL_REDRAW is always
 964          * used.  It is the fastest on this chip.
 965          */
 966         all->info.flags = (FBINFO_DEFAULT |
 967                            /* FBINFO_HWACCEL_COPYAREA | */
 968                            FBINFO_HWACCEL_FILLRECT |
 969                            FBINFO_HWACCEL_IMAGEBLIT);
 970         all->info.fbops = &ffb_ops;
 971         all->info.screen_base = (char *) all->par.physbase + FFB_DFB24_POFF;
 972         all->info.par = &all->par;
 973         all->info.pseudo_palette = all->pseudo_palette;
 974
 975         sbusfb_fill_var(&all->info.var, all->par.prom_node, 32);
 976         all->par.fbsize = PAGE_ALIGN(all->info.var.xres *
 977                                      all->info.var.yres *
 978                                      4);
 979         ffb_fixup_var_rgb(&all->info.var);
 980
 981         all->info.var.accel_flags = FB_ACCELF_TEXT;
 982
 983         prom_getstring(node, "name", all->par.name, sizeof(all->par.name));
 984         if (!strcmp(all->par.name, "SUNW,afb"))
 985                 all->par.flags |= FFB_FLAG_AFB;
 986
 987         all->par.board_type = prom_getintdefault(node, "board_type", 0);
 988
 989         fbc = all->par.fbc;
 990         if((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
 991                 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 992
 993         ffb_switch_from_graph(&all->par);
 994
 995         dac = all->par.dac;
 996         upa_writel(0x8000, &dac->type);
 997         all->par.dac_rev = upa_readl(&dac->value) >> 0x1c;
 998
 999         /* Elite3D has different DAC revision numbering, and no DAC revisions
1000          * have the reversed meaning of cursor enable.
1001          */
1002         if (all->par.flags & FFB_FLAG_AFB)
1003                 all->par.dac_rev = 10;
1004
1005         /* Unblank it just to be sure.  When there are multiple
1006          * FFB/AFB cards in the system, or it is not the OBP
1007          * chosen console, it will have video outputs off in
1008          * the DAC.
1009          */
1010         ffb_blank(0, &all->info);
1011
1012         if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
1013                 printk(KERN_ERR "ffb: Could not allocate color map.\n");
1014                 kfree(all);
1015                 return;
1016         }
1017
1018         ffb_init_fix(&all->info);
1019
1020         if (register_framebuffer(&all->info) < 0) {
1021                 printk(KERN_ERR "ffb: Could not register framebuffer.\n");
1022                 fb_dealloc_cmap(&all->info.cmap);
1023                 kfree(all);
1024                 return;
1025         }
1026
1027         list_add(&all->list, &ffb_list);
1028
1029         printk("ffb: %s at %016lx type %d DAC %d\n",
1030                ((all->par.flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
1031                regs[0].phys_addr, all->par.board_type, all->par.dac_rev);
1032 }
1033
1034 static void ffb_scan_siblings(int root)
1035 {
1036         int node, child;
1037
1038         child = prom_getchild(root);
1039         for (node = prom_searchsiblings(child, "SUNW,ffb"); node;
1040              node = prom_searchsiblings(prom_getsibling(node), "SUNW,ffb"))
1041                 ffb_init_one(node, root);
1042         for (node = prom_searchsiblings(child, "SUNW,afb"); node;
1043              node = prom_searchsiblings(prom_getsibling(node), "SUNW,afb"))
1044                 ffb_init_one(node, root);
1045 }
1046
1047 int __init ffb_init(void)
1048 {
1049         int root;
1050
1051         if (fb_get_options("ffb", NULL))
1052                 return -ENODEV;
1053
1054         ffb_scan_siblings(prom_root_node);
1055
1056         root = prom_getchild(prom_root_node);
1057         for (root = prom_searchsiblings(root, "upa"); root;
1058              root = prom_searchsiblings(prom_getsibling(root), "upa"))
1059                 ffb_scan_siblings(root);
1060
1061         return 0;
1062 }
1063
1064 void __exit ffb_exit(void)
1065 {
1066         struct list_head *pos, *tmp;
1067
1068         list_for_each_safe(pos, tmp, &ffb_list) {
1069                 struct all_info *all = list_entry(pos, typeof(*all), list);
1070
1071                 unregister_framebuffer(&all->info);
1072                 fb_dealloc_cmap(&all->info.cmap);
1073                 kfree(all);
1074         }
1075 }
1076
1077 int __init
1078 ffb_setup(char *arg)
1079 {
1080         /* No cmdline options yet... */
1081         return 0;
1082 }
1083
1084 module_init(ffb_init);
1085
1086 #ifdef MODULE
1087 module_exit(ffb_exit);
1088 #endif
1089
1090 MODULE_DESCRIPTION("framebuffer driver for Creator/Elite3D chipsets");
1091 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
1092 MODULE_LICENSE("GPL");