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 #ifdef CONFIG_COMPAT
  61         .fb_compat_ioctl        = sbusfb_compat_ioctl,
  62 #endif
  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 };
 363
 364 static void FFBFifo(struct ffb_par *par, int n)
 365 {
 366         struct ffb_fbc *fbc;
 367         int cache = par->fifo_cache;
 368
 369         if (cache - n < 0) {
 370                 fbc = par->fbc;
 371                 do {    cache = (upa_readl(&fbc->ucsr) & FFB_UCSR_FIFO_MASK) - 8;
 372                 } while (cache - n < 0);
 373         }
 374         par->fifo_cache = cache - n;
 375 }
 376
 377 static void FFBWait(struct ffb_par *par)
 378 {
 379         struct ffb_fbc *fbc;
 380         int limit = 10000;
 381
 382         fbc = par->fbc;
 383         do {
 384                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_BUSY) == 0)
 385                         break;
 386                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0) {
 387                         upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 388                 }
 389                 udelay(10);
 390         } while(--limit > 0);
 391 }
 392
 393 static int ffb_sync(struct fb_info *p)
 394 {
 395         struct ffb_par *par = (struct ffb_par *) p->par;
 396
 397         FFBWait(par);
 398         return 0;
 399 }
 400
 401 static __inline__ void ffb_rop(struct ffb_par *par, u32 rop)
 402 {
 403         if (par->rop_cache != rop) {
 404                 FFBFifo(par, 1);
 405                 upa_writel(rop, &par->fbc->rop);
 406                 par->rop_cache = rop;
 407         }
 408 }
 409
 410 static void ffb_switch_from_graph(struct ffb_par *par)
 411 {
 412         struct ffb_fbc *fbc = par->fbc;
 413         struct ffb_dac *dac = par->dac;
 414         unsigned long flags;
 415
 416         spin_lock_irqsave(&par->lock, flags);
 417         FFBWait(par);
 418         par->fifo_cache = 0;
 419         FFBFifo(par, 7);
 420         upa_writel(FFB_PPC_VCE_DISABLE|FFB_PPC_TBE_OPAQUE|
 421                    FFB_PPC_APE_DISABLE|FFB_PPC_CS_CONST,
 422                    &fbc->ppc);
 423         upa_writel(0x2000707f, &fbc->fbc);
 424         upa_writel(par->rop_cache, &fbc->rop);
 425         upa_writel(0xffffffff, &fbc->pmask);
 426         upa_writel((1 << 16) | (0 << 0), &fbc->fontinc);
 427         upa_writel(par->fg_cache, &fbc->fg);
 428         upa_writel(par->bg_cache, &fbc->bg);
 429         FFBWait(par);
 430
 431         /* Disable cursor.  */
 432         upa_writel(0x100, &dac->type2);
 433         if (par->dac_rev <= 2)
 434                 upa_writel(0, &dac->value2);
 435         else
 436                 upa_writel(3, &dac->value2);
 437
 438         spin_unlock_irqrestore(&par->lock, flags);
 439 }
 440
 441 static int ffb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 442 {
 443         struct ffb_par *par = (struct ffb_par *) info->par;
 444
 445         /* We just use this to catch switches out of
 446          * graphics mode.
 447          */
 448         ffb_switch_from_graph(par);
 449
 450         if (var->xoffset || var->yoffset || var->vmode)
 451                 return -EINVAL;
 452         return 0;
 453 }
 454
 455 /**
 456  *      ffb_fillrect - REQUIRED function. Can use generic routines if
 457  *                     non acclerated hardware and packed pixel based.
 458  *                     Draws a rectangle on the screen.
 459  *
 460  *      @info: frame buffer structure that represents a single frame buffer
 461  *      @rect: structure defining the rectagle and operation.
 462  */
 463 static void ffb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 464 {
 465         struct ffb_par *par = (struct ffb_par *) info->par;
 466         struct ffb_fbc *fbc = par->fbc;
 467         unsigned long flags;
 468         u32 fg;
 469
 470         if (rect->rop != ROP_COPY && rect->rop != ROP_XOR)
 471                 BUG();
 472
 473         fg = ((u32 *)info->pseudo_palette)[rect->color];
 474
 475         spin_lock_irqsave(&par->lock, flags);
 476
 477         if (fg != par->fg_cache) {
 478                 FFBFifo(par, 1);
 479                 upa_writel(fg, &fbc->fg);
 480                 par->fg_cache = fg;
 481         }
 482
 483         ffb_rop(par, (rect->rop == ROP_COPY ?
 484                       FFB_ROP_NEW :
 485                       FFB_ROP_NEW_XOR_OLD));
 486
 487         FFBFifo(par, 5);
 488         upa_writel(FFB_DRAWOP_RECTANGLE, &fbc->drawop);
 489         upa_writel(rect->dy, &fbc->by);
 490         upa_writel(rect->dx, &fbc->bx);
 491         upa_writel(rect->height, &fbc->bh);
 492         upa_writel(rect->width, &fbc->bw);
 493
 494         spin_unlock_irqrestore(&par->lock, flags);
 495 }
 496
 497 /**
 498  *      ffb_copyarea - REQUIRED function. Can use generic routines if
 499  *                     non acclerated hardware and packed pixel based.
 500  *                     Copies on area of the screen to another area.
 501  *
 502  *      @info: frame buffer structure that represents a single frame buffer
 503  *      @area: structure defining the source and destination.
 504  */
 505
 506 static void
 507 ffb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 508 {
 509         struct ffb_par *par = (struct ffb_par *) info->par;
 510         struct ffb_fbc *fbc = par->fbc;
 511         unsigned long flags;
 512
 513         if (area->dx != area->sx ||
 514             area->dy == area->sy) {
 515                 cfb_copyarea(info, area);
 516                 return;
 517         }
 518
 519         spin_lock_irqsave(&par->lock, flags);
 520
 521         ffb_rop(par, FFB_ROP_OLD);
 522
 523         FFBFifo(par, 7);
 524         upa_writel(FFB_DRAWOP_VSCROLL, &fbc->drawop);
 525         upa_writel(area->sy, &fbc->by);
 526         upa_writel(area->sx, &fbc->bx);
 527         upa_writel(area->dy, &fbc->dy);
 528         upa_writel(area->dx, &fbc->dx);
 529         upa_writel(area->height, &fbc->bh);
 530         upa_writel(area->width, &fbc->bw);
 531
 532         spin_unlock_irqrestore(&par->lock, flags);
 533 }
 534
 535 /**
 536  *      ffb_imageblit - REQUIRED function. Can use generic routines if
 537  *                      non acclerated hardware and packed pixel based.
 538  *                      Copies a image from system memory to the screen.
 539  *
 540  *      @info: frame buffer structure that represents a single frame buffer
 541  *      @image: structure defining the image.
 542  */
 543 static void ffb_imageblit(struct fb_info *info, const struct fb_image *image)
 544 {
 545         struct ffb_par *par = (struct ffb_par *) info->par;
 546         struct ffb_fbc *fbc = par->fbc;
 547         const u8 *data = image->data;
 548         unsigned long flags;
 549         u32 fg, bg, xy;
 550         u64 fgbg;
 551         int i, width, stride;
 552
 553         if (image->depth > 1) {
 554                 cfb_imageblit(info, image);
 555                 return;
 556         }
 557
 558         fg = ((u32 *)info->pseudo_palette)[image->fg_color];
 559         bg = ((u32 *)info->pseudo_palette)[image->bg_color];
 560         fgbg = ((u64) fg << 32) | (u64) bg;
 561         xy = (image->dy << 16) | image->dx;
 562         width = image->width;
 563         stride = ((width + 7) >> 3);
 564
 565         spin_lock_irqsave(&par->lock, flags);
 566
 567         if (fgbg != *(u64 *)&par->fg_cache) {
 568                 FFBFifo(par, 2);
 569                 upa_writeq(fgbg, &fbc->fg);
 570                 *(u64 *)&par->fg_cache = fgbg;
 571         }
 572
 573         if (width >= 32) {
 574                 FFBFifo(par, 1);
 575                 upa_writel(32, &fbc->fontw);
 576         }
 577
 578         while (width >= 32) {
 579                 const u8 *next_data = data + 4;
 580
 581                 FFBFifo(par, 1);
 582                 upa_writel(xy, &fbc->fontxy);
 583                 xy += (32 << 0);
 584
 585                 for (i = 0; i < image->height; i++) {
 586                         u32 val = (((u32)data[0] << 24) |
 587                                    ((u32)data[1] << 16) |
 588                                    ((u32)data[2] <<  8) |
 589                                    ((u32)data[3] <<  0));
 590                         FFBFifo(par, 1);
 591                         upa_writel(val, &fbc->font);
 592
 593                         data += stride;
 594                 }
 595
 596                 data = next_data;
 597                 width -= 32;
 598         }
 599
 600         if (width) {
 601                 FFBFifo(par, 2);
 602                 upa_writel(width, &fbc->fontw);
 603                 upa_writel(xy, &fbc->fontxy);
 604
 605                 for (i = 0; i < image->height; i++) {
 606                         u32 val = (((u32)data[0] << 24) |
 607                                    ((u32)data[1] << 16) |
 608                                    ((u32)data[2] <<  8) |
 609                                    ((u32)data[3] <<  0));
 610                         FFBFifo(par, 1);
 611                         upa_writel(val, &fbc->font);
 612
 613                         data += stride;
 614                 }
 615         }
 616
 617         spin_unlock_irqrestore(&par->lock, flags);
 618 }
 619
 620 static void ffb_fixup_var_rgb(struct fb_var_screeninfo *var)
 621 {
 622         var->red.offset = 0;
 623         var->red.length = 8;
 624         var->green.offset = 8;
 625         var->green.length = 8;
 626         var->blue.offset = 16;
 627         var->blue.length = 8;
 628         var->transp.offset = 0;
 629         var->transp.length = 0;
 630 }
 631
 632 /**
 633  *      ffb_setcolreg - Optional function. Sets a color register.
 634  *      @regno: boolean, 0 copy local, 1 get_user() function
 635  *      @red: frame buffer colormap structure
 636  *      @green: The green value which can be up to 16 bits wide
 637  *      @blue:  The blue value which can be up to 16 bits wide.
 638  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 639  *      @info: frame buffer info structure
 640  */
 641 static int ffb_setcolreg(unsigned regno,
 642                          unsigned red, unsigned green, unsigned blue,
 643                          unsigned transp, struct fb_info *info)
 644 {
 645         u32 value;
 646
 647         if (regno >= 256)
 648                 return 1;
 649
 650         red >>= 8;
 651         green >>= 8;
 652         blue >>= 8;
 653
 654         value = (blue << 16) | (green << 8) | red;
 655         ((u32 *)info->pseudo_palette)[regno] = value;
 656
 657         return 0;
 658 }
 659
 660 /**
 661  *      ffb_blank - Optional function.  Blanks the display.
 662  *      @blank_mode: the blank mode we want.
 663  *      @info: frame buffer structure that represents a single frame buffer
 664  */
 665 static int
 666 ffb_blank(int blank, struct fb_info *info)
 667 {
 668         struct ffb_par *par = (struct ffb_par *) info->par;
 669         struct ffb_dac *dac = par->dac;
 670         unsigned long flags;
 671         u32 tmp;
 672
 673         spin_lock_irqsave(&par->lock, flags);
 674
 675         FFBWait(par);
 676
 677         switch (blank) {
 678         case FB_BLANK_UNBLANK: /* Unblanking */
 679                 upa_writel(0x6000, &dac->type);
 680                 tmp = (upa_readl(&dac->value) | 0x1);
 681                 upa_writel(0x6000, &dac->type);
 682                 upa_writel(tmp, &dac->value);
 683                 par->flags &= ~FFB_FLAG_BLANKED;
 684                 break;
 685
 686         case FB_BLANK_NORMAL: /* Normal blanking */
 687         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 688         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 689         case FB_BLANK_POWERDOWN: /* Poweroff */
 690                 upa_writel(0x6000, &dac->type);
 691                 tmp = (upa_readl(&dac->value) & ~0x1);
 692                 upa_writel(0x6000, &dac->type);
 693                 upa_writel(tmp, &dac->value);
 694                 par->flags |= FFB_FLAG_BLANKED;
 695                 break;
 696         }
 697
 698         spin_unlock_irqrestore(&par->lock, flags);
 699
 700         return 0;
 701 }
 702
 703 static struct sbus_mmap_map ffb_mmap_map[] = {
 704         {
 705                 .voff   = FFB_SFB8R_VOFF,
 706                 .poff   = FFB_SFB8R_POFF,
 707                 .size   = 0x0400000
 708         },
 709         {
 710                 .voff   = FFB_SFB8G_VOFF,
 711                 .poff   = FFB_SFB8G_POFF,
 712                 .size   = 0x0400000
 713         },
 714         {
 715                 .voff   = FFB_SFB8B_VOFF,
 716                 .poff   = FFB_SFB8B_POFF,
 717                 .size   = 0x0400000
 718         },
 719         {
 720                 .voff   = FFB_SFB8X_VOFF,
 721                 .poff   = FFB_SFB8X_POFF,
 722                 .size   = 0x0400000
 723         },
 724         {
 725                 .voff   = FFB_SFB32_VOFF,
 726                 .poff   = FFB_SFB32_POFF,
 727                 .size   = 0x1000000
 728         },
 729         {
 730                 .voff   = FFB_SFB64_VOFF,
 731                 .poff   = FFB_SFB64_POFF,
 732                 .size   = 0x2000000
 733         },
 734         {
 735                 .voff   = FFB_FBC_REGS_VOFF,
 736                 .poff   = FFB_FBC_REGS_POFF,
 737                 .size   = 0x0002000
 738         },
 739         {
 740                 .voff   = FFB_BM_FBC_REGS_VOFF,
 741                 .poff   = FFB_BM_FBC_REGS_POFF,
 742                 .size   = 0x0002000
 743         },
 744         {
 745                 .voff   = FFB_DFB8R_VOFF,
 746                 .poff   = FFB_DFB8R_POFF,
 747                 .size   = 0x0400000
 748         },
 749         {
 750                 .voff   = FFB_DFB8G_VOFF,
 751                 .poff   = FFB_DFB8G_POFF,
 752                 .size   = 0x0400000
 753         },
 754         {
 755                 .voff   = FFB_DFB8B_VOFF,
 756                 .poff   = FFB_DFB8B_POFF,
 757                 .size   = 0x0400000
 758         },
 759         {
 760                 .voff   = FFB_DFB8X_VOFF,
 761                 .poff   = FFB_DFB8X_POFF,
 762                 .size   = 0x0400000
 763         },
 764         {
 765                 .voff   = FFB_DFB24_VOFF,
 766                 .poff   = FFB_DFB24_POFF,
 767                 .size   = 0x1000000
 768         },
 769         {
 770                 .voff   = FFB_DFB32_VOFF,
 771                 .poff   = FFB_DFB32_POFF,
 772                 .size   = 0x1000000
 773         },
 774         {
 775                 .voff   = FFB_FBC_KREGS_VOFF,
 776                 .poff   = FFB_FBC_KREGS_POFF,
 777                 .size   = 0x0002000
 778         },
 779         {
 780                 .voff   = FFB_DAC_VOFF,
 781                 .poff   = FFB_DAC_POFF,
 782                 .size   = 0x0002000
 783         },
 784         {
 785                 .voff   = FFB_PROM_VOFF,
 786                 .poff   = FFB_PROM_POFF,
 787                 .size   = 0x0010000
 788         },
 789         {
 790                 .voff   = FFB_EXP_VOFF,
 791                 .poff   = FFB_EXP_POFF,
 792                 .size   = 0x0002000
 793         },
 794         {
 795                 .voff   = FFB_DFB422A_VOFF,
 796                 .poff   = FFB_DFB422A_POFF,
 797                 .size   = 0x0800000
 798         },
 799         {
 800                 .voff   = FFB_DFB422AD_VOFF,
 801                 .poff   = FFB_DFB422AD_POFF,
 802                 .size   = 0x0800000
 803         },
 804         {
 805                 .voff   = FFB_DFB24B_VOFF,
 806                 .poff   = FFB_DFB24B_POFF,
 807                 .size   = 0x1000000
 808         },
 809         {
 810                 .voff   = FFB_DFB422B_VOFF,
 811                 .poff   = FFB_DFB422B_POFF,
 812                 .size   = 0x0800000
 813         },
 814         {
 815                 .voff   = FFB_DFB422BD_VOFF,
 816                 .poff   = FFB_DFB422BD_POFF,
 817                 .size   = 0x0800000
 818         },
 819         {
 820                 .voff   = FFB_SFB16Z_VOFF,
 821                 .poff   = FFB_SFB16Z_POFF,
 822                 .size   = 0x0800000
 823         },
 824         {
 825                 .voff   = FFB_SFB8Z_VOFF,
 826                 .poff   = FFB_SFB8Z_POFF,
 827                 .size   = 0x0800000
 828         },
 829         {
 830                 .voff   = FFB_SFB422_VOFF,
 831                 .poff   = FFB_SFB422_POFF,
 832                 .size   = 0x0800000
 833         },
 834         {
 835                 .voff   = FFB_SFB422D_VOFF,
 836                 .poff   = FFB_SFB422D_POFF,
 837                 .size   = 0x0800000
 838         },
 839         { .size = 0 }
 840 };
 841
 842 static int ffb_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
 843 {
 844         struct ffb_par *par = (struct ffb_par *)info->par;
 845
 846         return sbusfb_mmap_helper(ffb_mmap_map,
 847                                   par->physbase, par->fbsize,
 848                                   0, vma);
 849 }
 850
 851 static int ffb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 852                      unsigned long arg, struct fb_info *info)
 853 {
 854         struct ffb_par *par = (struct ffb_par *) info->par;
 855
 856         return sbusfb_ioctl_helper(cmd, arg, info,
 857                                    FBTYPE_CREATOR, 24, par->fbsize);
 858 }
 859
 860 /*
 861  *  Initialisation
 862  */
 863
 864 static void
 865 ffb_init_fix(struct fb_info *info)
 866 {
 867         struct ffb_par *par = (struct ffb_par *)info->par;
 868         const char *ffb_type_name;
 869
 870         if (!(par->flags & FFB_FLAG_AFB)) {
 871                 if ((par->board_type & 0x7) == 0x3)
 872                         ffb_type_name = "Creator 3D";
 873                 else
 874                         ffb_type_name = "Creator";
 875         } else
 876                 ffb_type_name = "Elite 3D";
 877
 878         strlcpy(info->fix.id, ffb_type_name, sizeof(info->fix.id));
 879
 880         info->fix.type = FB_TYPE_PACKED_PIXELS;
 881         info->fix.visual = FB_VISUAL_TRUECOLOR;
 882
 883         /* Framebuffer length is the same regardless of resolution. */
 884         info->fix.line_length = 8192;
 885
 886         info->fix.accel = FB_ACCEL_SUN_CREATOR;
 887 }
 888
 889 static int ffb_apply_upa_parent_ranges(int parent,
 890                                        struct linux_prom64_registers *regs)
 891 {
 892         struct linux_prom64_ranges ranges[PROMREG_MAX];
 893         char name[128];
 894         int len, i;
 895
 896         prom_getproperty(parent, "name", name, sizeof(name));
 897         if (strcmp(name, "upa") != 0)
 898                 return 0;
 899
 900         len = prom_getproperty(parent, "ranges", (void *) ranges, sizeof(ranges));
 901         if (len <= 0)
 902                 return 1;
 903
 904         len /= sizeof(struct linux_prom64_ranges);
 905         for (i = 0; i < len; i++) {
 906                 struct linux_prom64_ranges *rng = &ranges[i];
 907                 u64 phys_addr = regs->phys_addr;
 908
 909                 if (phys_addr >= rng->ot_child_base &&
 910                     phys_addr < (rng->ot_child_base + rng->or_size)) {
 911                         regs->phys_addr -= rng->ot_child_base;
 912                         regs->phys_addr += rng->ot_parent_base;
 913                         return 0;
 914                 }
 915         }
 916
 917         return 1;
 918 }
 919
 920 struct all_info {
 921         struct fb_info info;
 922         struct ffb_par par;
 923         u32 pseudo_palette[256];
 924         struct list_head list;
 925 };
 926 static LIST_HEAD(ffb_list);
 927
 928 static void ffb_init_one(int node, int parent)
 929 {
 930         struct linux_prom64_registers regs[2*PROMREG_MAX];
 931         struct ffb_fbc *fbc;
 932         struct ffb_dac *dac;
 933         struct all_info *all;
 934
 935         if (prom_getproperty(node, "reg", (void *) regs, sizeof(regs)) <= 0) {
 936                 printk("ffb: Cannot get reg device node property.\n");
 937                 return;
 938         }
 939
 940         if (ffb_apply_upa_parent_ranges(parent, &regs[0])) {
 941                 printk("ffb: Cannot apply parent ranges to regs.\n");
 942                 return;
 943         }
 944
 945         all = kmalloc(sizeof(*all), GFP_KERNEL);
 946         if (!all) {
 947                 printk(KERN_ERR "ffb: Cannot allocate memory.\n");
 948                 return;
 949         }
 950         memset(all, 0, sizeof(*all));
 951
 952         INIT_LIST_HEAD(&all->list);
 953
 954         spin_lock_init(&all->par.lock);
 955         all->par.fbc = (struct ffb_fbc *)(regs[0].phys_addr + FFB_FBC_REGS_POFF);
 956         all->par.dac = (struct ffb_dac *)(regs[0].phys_addr + FFB_DAC_POFF);
 957         all->par.rop_cache = FFB_ROP_NEW;
 958         all->par.physbase = regs[0].phys_addr;
 959         all->par.prom_node = node;
 960         all->par.prom_parent_node = parent;
 961
 962         /* Don't mention copyarea, so SCROLL_REDRAW is always
 963          * used.  It is the fastest on this chip.
 964          */
 965         all->info.flags = (FBINFO_DEFAULT |
 966                            /* FBINFO_HWACCEL_COPYAREA | */
 967                            FBINFO_HWACCEL_FILLRECT |
 968                            FBINFO_HWACCEL_IMAGEBLIT);
 969         all->info.fbops = &ffb_ops;
 970         all->info.screen_base = (char *) all->par.physbase + FFB_DFB24_POFF;
 971         all->info.par = &all->par;
 972         all->info.pseudo_palette = all->pseudo_palette;
 973
 974         sbusfb_fill_var(&all->info.var, all->par.prom_node, 32);
 975         all->par.fbsize = PAGE_ALIGN(all->info.var.xres *
 976                                      all->info.var.yres *
 977                                      4);
 978         ffb_fixup_var_rgb(&all->info.var);
 979
 980         all->info.var.accel_flags = FB_ACCELF_TEXT;
 981
 982         prom_getstring(node, "name", all->par.name, sizeof(all->par.name));
 983         if (!strcmp(all->par.name, "SUNW,afb"))
 984                 all->par.flags |= FFB_FLAG_AFB;
 985
 986         all->par.board_type = prom_getintdefault(node, "board_type", 0);
 987
 988         fbc = all->par.fbc;
 989         if((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
 990                 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 991
 992         ffb_switch_from_graph(&all->par);
 993
 994         dac = all->par.dac;
 995         upa_writel(0x8000, &dac->type);
 996         all->par.dac_rev = upa_readl(&dac->value) >> 0x1c;
 997
 998         /* Elite3D has different DAC revision numbering, and no DAC revisions
 999          * have the reversed meaning of cursor enable.
1000          */
1001         if (all->par.flags & FFB_FLAG_AFB)
1002                 all->par.dac_rev = 10;
1003
1004         /* Unblank it just to be sure.  When there are multiple
1005          * FFB/AFB cards in the system, or it is not the OBP
1006          * chosen console, it will have video outputs off in
1007          * the DAC.
1008          */
1009         ffb_blank(0, &all->info);
1010
1011         if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
1012                 printk(KERN_ERR "ffb: Could not allocate color map.\n");
1013                 kfree(all);
1014                 return;
1015         }
1016
1017         ffb_init_fix(&all->info);
1018
1019         if (register_framebuffer(&all->info) < 0) {
1020                 printk(KERN_ERR "ffb: Could not register framebuffer.\n");
1021                 fb_dealloc_cmap(&all->info.cmap);
1022                 kfree(all);
1023                 return;
1024         }
1025
1026         list_add(&all->list, &ffb_list);
1027
1028         printk("ffb: %s at %016lx type %d DAC %d\n",
1029                ((all->par.flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
1030                regs[0].phys_addr, all->par.board_type, all->par.dac_rev);
1031 }
1032
1033 static void ffb_scan_siblings(int root)
1034 {
1035         int node, child;
1036
1037         child = prom_getchild(root);
1038         for (node = prom_searchsiblings(child, "SUNW,ffb"); node;
1039              node = prom_searchsiblings(prom_getsibling(node), "SUNW,ffb"))
1040                 ffb_init_one(node, root);
1041         for (node = prom_searchsiblings(child, "SUNW,afb"); node;
1042              node = prom_searchsiblings(prom_getsibling(node), "SUNW,afb"))
1043                 ffb_init_one(node, root);
1044 }
1045
1046 int __init ffb_init(void)
1047 {
1048         int root;
1049
1050         if (fb_get_options("ffb", NULL))
1051                 return -ENODEV;
1052
1053         ffb_scan_siblings(prom_root_node);
1054
1055         root = prom_getchild(prom_root_node);
1056         for (root = prom_searchsiblings(root, "upa"); root;
1057              root = prom_searchsiblings(prom_getsibling(root), "upa"))
1058                 ffb_scan_siblings(root);
1059
1060         return 0;
1061 }
1062
1063 void __exit ffb_exit(void)
1064 {
1065         struct list_head *pos, *tmp;
1066
1067         list_for_each_safe(pos, tmp, &ffb_list) {
1068                 struct all_info *all = list_entry(pos, typeof(*all), list);
1069
1070                 unregister_framebuffer(&all->info);
1071                 fb_dealloc_cmap(&all->info.cmap);
1072                 kfree(all);
1073         }
1074 }
1075
1076 int __init
1077 ffb_setup(char *arg)
1078 {
1079         /* No cmdline options yet... */
1080         return 0;
1081 }
1082
1083 module_init(ffb_init);
1084
1085 #ifdef MODULE
1086 module_exit(ffb_exit);
1087 #endif
1088
1089 MODULE_DESCRIPTION("framebuffer driver for Creator/Elite3D chipsets");
1090 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
1091 MODULE_LICENSE("GPL");