drivers/video/ffb.c

   1 /* ffb.c: Creator/Elite3D frame buffer driver
   2  *
   3  * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
   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/prom.h>
  23 #include <asm/of_device.h>
  24 #include <asm/fbio.h>
  25
  26 #include "sbuslib.h"
  27
  28 /*
  29  * Local functions.
  30  */
  31
  32 static int ffb_setcolreg(unsigned, unsigned, unsigned, unsigned,
  33                          unsigned, struct fb_info *);
  34 static int ffb_blank(int, struct fb_info *);
  35 static void ffb_init_fix(struct fb_info *);
  36
  37 static void ffb_imageblit(struct fb_info *, const struct fb_image *);
  38 static void ffb_fillrect(struct fb_info *, const struct fb_fillrect *);
  39 static void ffb_copyarea(struct fb_info *, const struct fb_copyarea *);
  40 static int ffb_sync(struct fb_info *);
  41 static int ffb_mmap(struct fb_info *, struct vm_area_struct *);
  42 static int ffb_ioctl(struct fb_info *, unsigned int, unsigned long);
  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         u32     alpha;
 190         u32     red;
 191         u32     green;
 192         u32     blue;
 193         u32     depth;
 194         u32     y;
 195         u32     x;
 196         u32     xxx2[2];
 197         u32     ryf;
 198         u32     rxf;
 199         u32     xxx3[2];
 200
 201         u32     dmyf;
 202         u32     dmxf;
 203         u32     xxx4[2];
 204         u32     ebyi;
 205         u32     ebxi;
 206         u32     xxx5[2];
 207         u32     by;
 208         u32     bx;
 209         u32     dy;
 210         u32     dx;
 211         u32     bh;
 212         u32     bw;
 213         u32     xxx6[2];
 214
 215         u32     xxx7[32];
 216
 217         /* Setup unit vertex state register */
 218         u32     suvtx;
 219         u32     xxx8[63];
 220
 221         /* Control registers */
 222         u32     ppc;
 223         u32     wid;
 224         u32     fg;
 225         u32     bg;
 226         u32     consty;
 227         u32     constz;
 228         u32     xclip;
 229         u32     dcss;
 230         u32     vclipmin;
 231         u32     vclipmax;
 232         u32     vclipzmin;
 233         u32     vclipzmax;
 234         u32     dcsf;
 235         u32     dcsb;
 236         u32     dczf;
 237         u32     dczb;
 238
 239         u32     xxx9;
 240         u32     blendc;
 241         u32     blendc1;
 242         u32     blendc2;
 243         u32     fbramitc;
 244         u32     fbc;
 245         u32     rop;
 246         u32     cmp;
 247         u32     matchab;
 248         u32     matchc;
 249         u32     magnab;
 250         u32     magnc;
 251         u32     fbcfg0;
 252         u32     fbcfg1;
 253         u32     fbcfg2;
 254         u32     fbcfg3;
 255
 256         u32     ppcfg;
 257         u32     pick;
 258         u32     fillmode;
 259         u32     fbramwac;
 260         u32     pmask;
 261         u32     xpmask;
 262         u32     ypmask;
 263         u32     zpmask;
 264         u32     clip0min;
 265         u32     clip0max;
 266         u32     clip1min;
 267         u32     clip1max;
 268         u32     clip2min;
 269         u32     clip2max;
 270         u32     clip3min;
 271         u32     clip3max;
 272
 273         /* New 3dRAM III support regs */
 274         u32     rawblend2;
 275         u32     rawpreblend;
 276         u32     rawstencil;
 277         u32     rawstencilctl;
 278         u32     threedram1;
 279         u32     threedram2;
 280         u32     passin;
 281         u32     rawclrdepth;
 282         u32     rawpmask;
 283         u32     rawcsrc;
 284         u32     rawmatch;
 285         u32     rawmagn;
 286         u32     rawropblend;
 287         u32     rawcmp;
 288         u32     rawwac;
 289         u32     fbramid;
 290
 291         u32     drawop;
 292         u32     xxx10[2];
 293         u32     fontlpat;
 294         u32     xxx11;
 295         u32     fontxy;
 296         u32     fontw;
 297         u32     fontinc;
 298         u32     font;
 299         u32     xxx12[3];
 300         u32     blend2;
 301         u32     preblend;
 302         u32     stencil;
 303         u32     stencilctl;
 304
 305         u32     xxx13[4];
 306         u32     dcss1;
 307         u32     dcss2;
 308         u32     dcss3;
 309         u32     widpmask;
 310         u32     dcs2;
 311         u32     dcs3;
 312         u32     dcs4;
 313         u32     xxx14;
 314         u32     dcd2;
 315         u32     dcd3;
 316         u32     dcd4;
 317         u32     xxx15;
 318
 319         u32     pattern[32];
 320
 321         u32     xxx16[256];
 322
 323         u32     devid;
 324         u32     xxx17[63];
 325
 326         u32     ucsr;
 327         u32     xxx18[31];
 328
 329         u32     mer;
 330 };
 331
 332 struct ffb_dac {
 333         u32     type;
 334         u32     value;
 335         u32     type2;
 336         u32     value2;
 337 };
 338
 339 #define FFB_DAC_UCTRL   0x1001 /* User Control */
 340 #define  FFB_DAC_UCTRL_MANREV   0x00000f00 /* 4-bit Manufacturing Revision */
 341 #define  FFB_DAC_UCTRL_MANREV_SHIFT 8
 342 #define FFB_DAC_TGEN    0x6000 /* Timing Generator */
 343 #define  FFB_DAC_TGEN_VIDE      0x00000001 /* Video Enable */
 344 #define FFB_DAC_DID     0x8000 /* Device Identification */
 345 #define  FFB_DAC_DID_PNUM       0x0ffff000 /* Device Part Number */
 346 #define  FFB_DAC_DID_PNUM_SHIFT 12
 347 #define  FFB_DAC_DID_REV        0xf0000000 /* Device Revision */
 348 #define  FFB_DAC_DID_REV_SHIFT 28
 349
 350 #define FFB_DAC_CUR_CTRL        0x100
 351 #define  FFB_DAC_CUR_CTRL_P0    0x00000001
 352 #define  FFB_DAC_CUR_CTRL_P1    0x00000002
 353
 354 struct ffb_par {
 355         spinlock_t              lock;
 356         struct ffb_fbc __iomem  *fbc;
 357         struct ffb_dac __iomem  *dac;
 358
 359         u32                     flags;
 360 #define FFB_FLAG_AFB            0x00000001 /* AFB m3 or m6 */
 361 #define FFB_FLAG_BLANKED        0x00000002 /* screen is blanked */
 362 #define FFB_FLAG_INVCURSOR      0x00000004 /* DAC has inverted cursor logic */
 363
 364         u32                     fg_cache __attribute__((aligned (8)));
 365         u32                     bg_cache;
 366         u32                     rop_cache;
 367
 368         int                     fifo_cache;
 369
 370         unsigned long           physbase;
 371         unsigned long           fbsize;
 372
 373         int                     board_type;
 374 };
 375
 376 static void FFBFifo(struct ffb_par *par, int n)
 377 {
 378         struct ffb_fbc __iomem *fbc;
 379         int cache = par->fifo_cache;
 380
 381         if (cache - n < 0) {
 382                 fbc = par->fbc;
 383                 do {    cache = (upa_readl(&fbc->ucsr) & FFB_UCSR_FIFO_MASK) - 8;
 384                 } while (cache - n < 0);
 385         }
 386         par->fifo_cache = cache - n;
 387 }
 388
 389 static void FFBWait(struct ffb_par *par)
 390 {
 391         struct ffb_fbc __iomem *fbc;
 392         int limit = 10000;
 393
 394         fbc = par->fbc;
 395         do {
 396                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_BUSY) == 0)
 397                         break;
 398                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0) {
 399                         upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 400                 }
 401                 udelay(10);
 402         } while(--limit > 0);
 403 }
 404
 405 static int ffb_sync(struct fb_info *p)
 406 {
 407         struct ffb_par *par = (struct ffb_par *) p->par;
 408
 409         FFBWait(par);
 410         return 0;
 411 }
 412
 413 static __inline__ void ffb_rop(struct ffb_par *par, u32 rop)
 414 {
 415         if (par->rop_cache != rop) {
 416                 FFBFifo(par, 1);
 417                 upa_writel(rop, &par->fbc->rop);
 418                 par->rop_cache = rop;
 419         }
 420 }
 421
 422 static void ffb_switch_from_graph(struct ffb_par *par)
 423 {
 424         struct ffb_fbc __iomem *fbc = par->fbc;
 425         struct ffb_dac __iomem *dac = par->dac;
 426         unsigned long flags;
 427
 428         spin_lock_irqsave(&par->lock, flags);
 429         FFBWait(par);
 430         par->fifo_cache = 0;
 431         FFBFifo(par, 7);
 432         upa_writel(FFB_PPC_VCE_DISABLE|FFB_PPC_TBE_OPAQUE|
 433                    FFB_PPC_APE_DISABLE|FFB_PPC_CS_CONST,
 434                    &fbc->ppc);
 435         upa_writel(0x2000707f, &fbc->fbc);
 436         upa_writel(par->rop_cache, &fbc->rop);
 437         upa_writel(0xffffffff, &fbc->pmask);
 438         upa_writel((1 << 16) | (0 << 0), &fbc->fontinc);
 439         upa_writel(par->fg_cache, &fbc->fg);
 440         upa_writel(par->bg_cache, &fbc->bg);
 441         FFBWait(par);
 442
 443         /* Disable cursor.  */
 444         upa_writel(FFB_DAC_CUR_CTRL, &dac->type2);
 445         if (par->flags & FFB_FLAG_INVCURSOR)
 446                 upa_writel(0, &dac->value2);
 447         else
 448                 upa_writel((FFB_DAC_CUR_CTRL_P0 |
 449                             FFB_DAC_CUR_CTRL_P1), &dac->value2);
 450
 451         spin_unlock_irqrestore(&par->lock, flags);
 452 }
 453
 454 static int ffb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 455 {
 456         struct ffb_par *par = (struct ffb_par *) info->par;
 457
 458         /* We just use this to catch switches out of
 459          * graphics mode.
 460          */
 461         ffb_switch_from_graph(par);
 462
 463         if (var->xoffset || var->yoffset || var->vmode)
 464                 return -EINVAL;
 465         return 0;
 466 }
 467
 468 /**
 469  *      ffb_fillrect - REQUIRED function. Can use generic routines if
 470  *                     non acclerated hardware and packed pixel based.
 471  *                     Draws a rectangle on the screen.
 472  *
 473  *      @info: frame buffer structure that represents a single frame buffer
 474  *      @rect: structure defining the rectagle and operation.
 475  */
 476 static void ffb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 477 {
 478         struct ffb_par *par = (struct ffb_par *) info->par;
 479         struct ffb_fbc __iomem *fbc = par->fbc;
 480         unsigned long flags;
 481         u32 fg;
 482
 483         BUG_ON(rect->rop != ROP_COPY && rect->rop != ROP_XOR);
 484
 485         fg = ((u32 *)info->pseudo_palette)[rect->color];
 486
 487         spin_lock_irqsave(&par->lock, flags);
 488
 489         if (fg != par->fg_cache) {
 490                 FFBFifo(par, 1);
 491                 upa_writel(fg, &fbc->fg);
 492                 par->fg_cache = fg;
 493         }
 494
 495         ffb_rop(par, (rect->rop == ROP_COPY ?
 496                       FFB_ROP_NEW :
 497                       FFB_ROP_NEW_XOR_OLD));
 498
 499         FFBFifo(par, 5);
 500         upa_writel(FFB_DRAWOP_RECTANGLE, &fbc->drawop);
 501         upa_writel(rect->dy, &fbc->by);
 502         upa_writel(rect->dx, &fbc->bx);
 503         upa_writel(rect->height, &fbc->bh);
 504         upa_writel(rect->width, &fbc->bw);
 505
 506         spin_unlock_irqrestore(&par->lock, flags);
 507 }
 508
 509 /**
 510  *      ffb_copyarea - REQUIRED function. Can use generic routines if
 511  *                     non acclerated hardware and packed pixel based.
 512  *                     Copies on area of the screen to another area.
 513  *
 514  *      @info: frame buffer structure that represents a single frame buffer
 515  *      @area: structure defining the source and destination.
 516  */
 517
 518 static void
 519 ffb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 520 {
 521         struct ffb_par *par = (struct ffb_par *) info->par;
 522         struct ffb_fbc __iomem *fbc = par->fbc;
 523         unsigned long flags;
 524
 525         if (area->dx != area->sx ||
 526             area->dy == area->sy) {
 527                 cfb_copyarea(info, area);
 528                 return;
 529         }
 530
 531         spin_lock_irqsave(&par->lock, flags);
 532
 533         ffb_rop(par, FFB_ROP_OLD);
 534
 535         FFBFifo(par, 7);
 536         upa_writel(FFB_DRAWOP_VSCROLL, &fbc->drawop);
 537         upa_writel(area->sy, &fbc->by);
 538         upa_writel(area->sx, &fbc->bx);
 539         upa_writel(area->dy, &fbc->dy);
 540         upa_writel(area->dx, &fbc->dx);
 541         upa_writel(area->height, &fbc->bh);
 542         upa_writel(area->width, &fbc->bw);
 543
 544         spin_unlock_irqrestore(&par->lock, flags);
 545 }
 546
 547 /**
 548  *      ffb_imageblit - REQUIRED function. Can use generic routines if
 549  *                      non acclerated hardware and packed pixel based.
 550  *                      Copies a image from system memory to the screen.
 551  *
 552  *      @info: frame buffer structure that represents a single frame buffer
 553  *      @image: structure defining the image.
 554  */
 555 static void ffb_imageblit(struct fb_info *info, const struct fb_image *image)
 556 {
 557         struct ffb_par *par = (struct ffb_par *) info->par;
 558         struct ffb_fbc __iomem *fbc = par->fbc;
 559         const u8 *data = image->data;
 560         unsigned long flags;
 561         u32 fg, bg, xy;
 562         u64 fgbg;
 563         int i, width, stride;
 564
 565         if (image->depth > 1) {
 566                 cfb_imageblit(info, image);
 567                 return;
 568         }
 569
 570         fg = ((u32 *)info->pseudo_palette)[image->fg_color];
 571         bg = ((u32 *)info->pseudo_palette)[image->bg_color];
 572         fgbg = ((u64) fg << 32) | (u64) bg;
 573         xy = (image->dy << 16) | image->dx;
 574         width = image->width;
 575         stride = ((width + 7) >> 3);
 576
 577         spin_lock_irqsave(&par->lock, flags);
 578
 579         if (fgbg != *(u64 *)&par->fg_cache) {
 580                 FFBFifo(par, 2);
 581                 upa_writeq(fgbg, &fbc->fg);
 582                 *(u64 *)&par->fg_cache = fgbg;
 583         }
 584
 585         if (width >= 32) {
 586                 FFBFifo(par, 1);
 587                 upa_writel(32, &fbc->fontw);
 588         }
 589
 590         while (width >= 32) {
 591                 const u8 *next_data = data + 4;
 592
 593                 FFBFifo(par, 1);
 594                 upa_writel(xy, &fbc->fontxy);
 595                 xy += (32 << 0);
 596
 597                 for (i = 0; i < image->height; i++) {
 598                         u32 val = (((u32)data[0] << 24) |
 599                                    ((u32)data[1] << 16) |
 600                                    ((u32)data[2] <<  8) |
 601                                    ((u32)data[3] <<  0));
 602                         FFBFifo(par, 1);
 603                         upa_writel(val, &fbc->font);
 604
 605                         data += stride;
 606                 }
 607
 608                 data = next_data;
 609                 width -= 32;
 610         }
 611
 612         if (width) {
 613                 FFBFifo(par, 2);
 614                 upa_writel(width, &fbc->fontw);
 615                 upa_writel(xy, &fbc->fontxy);
 616
 617                 for (i = 0; i < image->height; i++) {
 618                         u32 val = (((u32)data[0] << 24) |
 619                                    ((u32)data[1] << 16) |
 620                                    ((u32)data[2] <<  8) |
 621                                    ((u32)data[3] <<  0));
 622                         FFBFifo(par, 1);
 623                         upa_writel(val, &fbc->font);
 624
 625                         data += stride;
 626                 }
 627         }
 628
 629         spin_unlock_irqrestore(&par->lock, flags);
 630 }
 631
 632 static void ffb_fixup_var_rgb(struct fb_var_screeninfo *var)
 633 {
 634         var->red.offset = 0;
 635         var->red.length = 8;
 636         var->green.offset = 8;
 637         var->green.length = 8;
 638         var->blue.offset = 16;
 639         var->blue.length = 8;
 640         var->transp.offset = 0;
 641         var->transp.length = 0;
 642 }
 643
 644 /**
 645  *      ffb_setcolreg - Optional function. Sets a color register.
 646  *      @regno: boolean, 0 copy local, 1 get_user() function
 647  *      @red: frame buffer colormap structure
 648  *      @green: The green value which can be up to 16 bits wide
 649  *      @blue:  The blue value which can be up to 16 bits wide.
 650  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 651  *      @info: frame buffer info structure
 652  */
 653 static int ffb_setcolreg(unsigned regno,
 654                          unsigned red, unsigned green, unsigned blue,
 655                          unsigned transp, struct fb_info *info)
 656 {
 657         u32 value;
 658
 659         if (regno >= 256)
 660                 return 1;
 661
 662         red >>= 8;
 663         green >>= 8;
 664         blue >>= 8;
 665
 666         value = (blue << 16) | (green << 8) | red;
 667         ((u32 *)info->pseudo_palette)[regno] = value;
 668
 669         return 0;
 670 }
 671
 672 /**
 673  *      ffb_blank - Optional function.  Blanks the display.
 674  *      @blank_mode: the blank mode we want.
 675  *      @info: frame buffer structure that represents a single frame buffer
 676  */
 677 static int
 678 ffb_blank(int blank, struct fb_info *info)
 679 {
 680         struct ffb_par *par = (struct ffb_par *) info->par;
 681         struct ffb_dac __iomem *dac = par->dac;
 682         unsigned long flags;
 683         u32 val;
 684         int i;
 685
 686         spin_lock_irqsave(&par->lock, flags);
 687
 688         FFBWait(par);
 689
 690         upa_writel(FFB_DAC_TGEN, &dac->type);
 691         val = upa_readl(&dac->value);
 692         switch (blank) {
 693         case FB_BLANK_UNBLANK: /* Unblanking */
 694                 val |= FFB_DAC_TGEN_VIDE;
 695                 par->flags &= ~FFB_FLAG_BLANKED;
 696                 break;
 697
 698         case FB_BLANK_NORMAL: /* Normal blanking */
 699         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 700         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 701         case FB_BLANK_POWERDOWN: /* Poweroff */
 702                 val &= ~FFB_DAC_TGEN_VIDE;
 703                 par->flags |= FFB_FLAG_BLANKED;
 704                 break;
 705         }
 706         upa_writel(FFB_DAC_TGEN, &dac->type);
 707         upa_writel(val, &dac->value);
 708         for (i = 0; i < 10; i++) {
 709                 upa_writel(FFB_DAC_TGEN, &dac->type);
 710                 upa_readl(&dac->value);
 711         }
 712
 713         spin_unlock_irqrestore(&par->lock, flags);
 714
 715         return 0;
 716 }
 717
 718 static struct sbus_mmap_map ffb_mmap_map[] = {
 719         {
 720                 .voff   = FFB_SFB8R_VOFF,
 721                 .poff   = FFB_SFB8R_POFF,
 722                 .size   = 0x0400000
 723         },
 724         {
 725                 .voff   = FFB_SFB8G_VOFF,
 726                 .poff   = FFB_SFB8G_POFF,
 727                 .size   = 0x0400000
 728         },
 729         {
 730                 .voff   = FFB_SFB8B_VOFF,
 731                 .poff   = FFB_SFB8B_POFF,
 732                 .size   = 0x0400000
 733         },
 734         {
 735                 .voff   = FFB_SFB8X_VOFF,
 736                 .poff   = FFB_SFB8X_POFF,
 737                 .size   = 0x0400000
 738         },
 739         {
 740                 .voff   = FFB_SFB32_VOFF,
 741                 .poff   = FFB_SFB32_POFF,
 742                 .size   = 0x1000000
 743         },
 744         {
 745                 .voff   = FFB_SFB64_VOFF,
 746                 .poff   = FFB_SFB64_POFF,
 747                 .size   = 0x2000000
 748         },
 749         {
 750                 .voff   = FFB_FBC_REGS_VOFF,
 751                 .poff   = FFB_FBC_REGS_POFF,
 752                 .size   = 0x0002000
 753         },
 754         {
 755                 .voff   = FFB_BM_FBC_REGS_VOFF,
 756                 .poff   = FFB_BM_FBC_REGS_POFF,
 757                 .size   = 0x0002000
 758         },
 759         {
 760                 .voff   = FFB_DFB8R_VOFF,
 761                 .poff   = FFB_DFB8R_POFF,
 762                 .size   = 0x0400000
 763         },
 764         {
 765                 .voff   = FFB_DFB8G_VOFF,
 766                 .poff   = FFB_DFB8G_POFF,
 767                 .size   = 0x0400000
 768         },
 769         {
 770                 .voff   = FFB_DFB8B_VOFF,
 771                 .poff   = FFB_DFB8B_POFF,
 772                 .size   = 0x0400000
 773         },
 774         {
 775                 .voff   = FFB_DFB8X_VOFF,
 776                 .poff   = FFB_DFB8X_POFF,
 777                 .size   = 0x0400000
 778         },
 779         {
 780                 .voff   = FFB_DFB24_VOFF,
 781                 .poff   = FFB_DFB24_POFF,
 782                 .size   = 0x1000000
 783         },
 784         {
 785                 .voff   = FFB_DFB32_VOFF,
 786                 .poff   = FFB_DFB32_POFF,
 787                 .size   = 0x1000000
 788         },
 789         {
 790                 .voff   = FFB_FBC_KREGS_VOFF,
 791                 .poff   = FFB_FBC_KREGS_POFF,
 792                 .size   = 0x0002000
 793         },
 794         {
 795                 .voff   = FFB_DAC_VOFF,
 796                 .poff   = FFB_DAC_POFF,
 797                 .size   = 0x0002000
 798         },
 799         {
 800                 .voff   = FFB_PROM_VOFF,
 801                 .poff   = FFB_PROM_POFF,
 802                 .size   = 0x0010000
 803         },
 804         {
 805                 .voff   = FFB_EXP_VOFF,
 806                 .poff   = FFB_EXP_POFF,
 807                 .size   = 0x0002000
 808         },
 809         {
 810                 .voff   = FFB_DFB422A_VOFF,
 811                 .poff   = FFB_DFB422A_POFF,
 812                 .size   = 0x0800000
 813         },
 814         {
 815                 .voff   = FFB_DFB422AD_VOFF,
 816                 .poff   = FFB_DFB422AD_POFF,
 817                 .size   = 0x0800000
 818         },
 819         {
 820                 .voff   = FFB_DFB24B_VOFF,
 821                 .poff   = FFB_DFB24B_POFF,
 822                 .size   = 0x1000000
 823         },
 824         {
 825                 .voff   = FFB_DFB422B_VOFF,
 826                 .poff   = FFB_DFB422B_POFF,
 827                 .size   = 0x0800000
 828         },
 829         {
 830                 .voff   = FFB_DFB422BD_VOFF,
 831                 .poff   = FFB_DFB422BD_POFF,
 832                 .size   = 0x0800000
 833         },
 834         {
 835                 .voff   = FFB_SFB16Z_VOFF,
 836                 .poff   = FFB_SFB16Z_POFF,
 837                 .size   = 0x0800000
 838         },
 839         {
 840                 .voff   = FFB_SFB8Z_VOFF,
 841                 .poff   = FFB_SFB8Z_POFF,
 842                 .size   = 0x0800000
 843         },
 844         {
 845                 .voff   = FFB_SFB422_VOFF,
 846                 .poff   = FFB_SFB422_POFF,
 847                 .size   = 0x0800000
 848         },
 849         {
 850                 .voff   = FFB_SFB422D_VOFF,
 851                 .poff   = FFB_SFB422D_POFF,
 852                 .size   = 0x0800000
 853         },
 854         { .size = 0 }
 855 };
 856
 857 static int ffb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 858 {
 859         struct ffb_par *par = (struct ffb_par *)info->par;
 860
 861         return sbusfb_mmap_helper(ffb_mmap_map,
 862                                   par->physbase, par->fbsize,
 863                                   0, vma);
 864 }
 865
 866 static int ffb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 867 {
 868         struct ffb_par *par = (struct ffb_par *) info->par;
 869
 870         return sbusfb_ioctl_helper(cmd, arg, info,
 871                                    FBTYPE_CREATOR, 24, par->fbsize);
 872 }
 873
 874 /*
 875  *  Initialisation
 876  */
 877
 878 static void
 879 ffb_init_fix(struct fb_info *info)
 880 {
 881         struct ffb_par *par = (struct ffb_par *)info->par;
 882         const char *ffb_type_name;
 883
 884         if (!(par->flags & FFB_FLAG_AFB)) {
 885                 if ((par->board_type & 0x7) == 0x3)
 886                         ffb_type_name = "Creator 3D";
 887                 else
 888                         ffb_type_name = "Creator";
 889         } else
 890                 ffb_type_name = "Elite 3D";
 891
 892         strlcpy(info->fix.id, ffb_type_name, sizeof(info->fix.id));
 893
 894         info->fix.type = FB_TYPE_PACKED_PIXELS;
 895         info->fix.visual = FB_VISUAL_TRUECOLOR;
 896
 897         /* Framebuffer length is the same regardless of resolution. */
 898         info->fix.line_length = 8192;
 899
 900         info->fix.accel = FB_ACCEL_SUN_CREATOR;
 901 }
 902
 903 struct all_info {
 904         struct fb_info info;
 905         struct ffb_par par;
 906         u32 pseudo_palette[256];
 907 };
 908
 909 static int ffb_init_one(struct of_device *op)
 910 {
 911         struct device_node *dp = op->node;
 912         struct ffb_fbc __iomem *fbc;
 913         struct ffb_dac __iomem *dac;
 914         struct all_info *all;
 915         int err;
 916         u32 dac_pnum, dac_rev, dac_mrev;
 917
 918         all = kzalloc(sizeof(*all), GFP_KERNEL);
 919         if (!all)
 920                 return -ENOMEM;
 921
 922         spin_lock_init(&all->par.lock);
 923         all->par.fbc = of_ioremap(&op->resource[2], 0,
 924                                   sizeof(struct ffb_fbc), "ffb fbc");
 925         if (!all->par.fbc) {
 926                 kfree(all);
 927                 return -ENOMEM;
 928         }
 929
 930         all->par.dac = of_ioremap(&op->resource[1], 0,
 931                                   sizeof(struct ffb_dac), "ffb dac");
 932         if (!all->par.dac) {
 933                 of_iounmap(&op->resource[2],
 934                            all->par.fbc, sizeof(struct ffb_fbc));
 935                 kfree(all);
 936                 return -ENOMEM;
 937         }
 938
 939         all->par.rop_cache = FFB_ROP_NEW;
 940         all->par.physbase = op->resource[0].start;
 941
 942         /* Don't mention copyarea, so SCROLL_REDRAW is always
 943          * used.  It is the fastest on this chip.
 944          */
 945         all->info.flags = (FBINFO_DEFAULT |
 946                            /* FBINFO_HWACCEL_COPYAREA | */
 947                            FBINFO_HWACCEL_FILLRECT |
 948                            FBINFO_HWACCEL_IMAGEBLIT);
 949         all->info.fbops = &ffb_ops;
 950         all->info.screen_base = (char *) all->par.physbase + FFB_DFB24_POFF;
 951         all->info.par = &all->par;
 952         all->info.pseudo_palette = all->pseudo_palette;
 953
 954         sbusfb_fill_var(&all->info.var, dp->node, 32);
 955         all->par.fbsize = PAGE_ALIGN(all->info.var.xres *
 956                                      all->info.var.yres *
 957                                      4);
 958         ffb_fixup_var_rgb(&all->info.var);
 959
 960         all->info.var.accel_flags = FB_ACCELF_TEXT;
 961
 962         if (!strcmp(dp->name, "SUNW,afb"))
 963                 all->par.flags |= FFB_FLAG_AFB;
 964
 965         all->par.board_type = of_getintprop_default(dp, "board_type", 0);
 966
 967         fbc = all->par.fbc;
 968         if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
 969                 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 970
 971         dac = all->par.dac;
 972         upa_writel(FFB_DAC_DID, &dac->type);
 973         dac_pnum = upa_readl(&dac->value);
 974         dac_rev = (dac_pnum & FFB_DAC_DID_REV) >> FFB_DAC_DID_REV_SHIFT;
 975         dac_pnum = (dac_pnum & FFB_DAC_DID_PNUM) >> FFB_DAC_DID_PNUM_SHIFT;
 976
 977         upa_writel(FFB_DAC_UCTRL, &dac->type);
 978         dac_mrev = upa_readl(&dac->value);
 979         dac_mrev = (dac_mrev & FFB_DAC_UCTRL_MANREV) >>
 980                 FFB_DAC_UCTRL_MANREV_SHIFT;
 981
 982         /* Elite3D has different DAC revision numbering, and no DAC revisions
 983          * have the reversed meaning of cursor enable.  Otherwise, Pacifica 1
 984          * ramdacs with manufacturing revision less than 3 have inverted
 985          * cursor logic.  We identify Pacifica 1 as not Pacifica 2, the
 986          * latter having a part number value of 0x236e.
 987          */
 988         if ((all->par.flags & FFB_FLAG_AFB) || dac_pnum == 0x236e) {
 989                 all->par.flags &= ~FFB_FLAG_INVCURSOR;
 990         } else {
 991                 if (dac_mrev < 3)
 992                         all->par.flags |= FFB_FLAG_INVCURSOR;
 993         }
 994
 995         ffb_switch_from_graph(&all->par);
 996
 997         /* Unblank it just to be sure.  When there are multiple
 998          * FFB/AFB cards in the system, or it is not the OBP
 999          * chosen console, it will have video outputs off in
1000          * the DAC.
1001          */
1002         ffb_blank(0, &all->info);
1003
1004         if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
1005                 printk(KERN_ERR "ffb: Could not allocate color map.\n");
1006                 of_iounmap(&op->resource[2],
1007                            all->par.fbc, sizeof(struct ffb_fbc));
1008                 of_iounmap(&op->resource[1],
1009                            all->par.dac, sizeof(struct ffb_dac));
1010                 kfree(all);
1011                 return -ENOMEM;
1012         }
1013
1014         ffb_init_fix(&all->info);
1015
1016         err = register_framebuffer(&all->info);
1017         if (err < 0) {
1018                 printk(KERN_ERR "ffb: Could not register framebuffer.\n");
1019                 fb_dealloc_cmap(&all->info.cmap);
1020                 of_iounmap(&op->resource[2],
1021                            all->par.fbc, sizeof(struct ffb_fbc));
1022                 of_iounmap(&op->resource[1],
1023                            all->par.dac, sizeof(struct ffb_dac));
1024                 kfree(all);
1025                 return err;
1026         }
1027
1028         dev_set_drvdata(&op->dev, all);
1029
1030         printk("%s: %s at %016lx, type %d, "
1031                "DAC pnum[%x] rev[%d] manuf_rev[%d]\n",
1032                dp->full_name,
1033                ((all->par.flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
1034                all->par.physbase, all->par.board_type,
1035                dac_pnum, dac_rev, dac_mrev);
1036
1037         return 0;
1038 }
1039
1040 static int __devinit ffb_probe(struct of_device *dev, const struct of_device_id *match)
1041 {
1042         struct of_device *op = to_of_device(&dev->dev);
1043
1044         return ffb_init_one(op);
1045 }
1046
1047 static int __devexit ffb_remove(struct of_device *op)
1048 {
1049         struct all_info *all = dev_get_drvdata(&op->dev);
1050
1051         unregister_framebuffer(&all->info);
1052         fb_dealloc_cmap(&all->info.cmap);
1053
1054         of_iounmap(&op->resource[2], all->par.fbc, sizeof(struct ffb_fbc));
1055         of_iounmap(&op->resource[1], all->par.dac, sizeof(struct ffb_dac));
1056
1057         kfree(all);
1058
1059         dev_set_drvdata(&op->dev, NULL);
1060
1061         return 0;
1062 }
1063
1064 static struct of_device_id ffb_match[] = {
1065         {
1066                 .name = "SUNW,ffb",
1067         },
1068         {
1069                 .name = "SUNW,afb",
1070         },
1071         {},
1072 };
1073 MODULE_DEVICE_TABLE(of, ffb_match);
1074
1075 static struct of_platform_driver ffb_driver = {
1076         .name           = "ffb",
1077         .match_table    = ffb_match,
1078         .probe          = ffb_probe,
1079         .remove         = __devexit_p(ffb_remove),
1080 };
1081
1082 int __init ffb_init(void)
1083 {
1084         if (fb_get_options("ffb", NULL))
1085                 return -ENODEV;
1086
1087         return of_register_driver(&ffb_driver, &of_bus_type);
1088 }
1089
1090 void __exit ffb_exit(void)
1091 {
1092         of_unregister_driver(&ffb_driver);
1093 }
1094
1095 module_init(ffb_init);
1096 module_exit(ffb_exit);
1097
1098 MODULE_DESCRIPTION("framebuffer driver for Creator/Elite3D chipsets");
1099 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
1100 MODULE_VERSION("2.0");
1101 MODULE_LICENSE("GPL");