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
  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 vm_area_struct *);
  41 static int ffb_ioctl(struct fb_info *, unsigned int, unsigned long);
  42 static int ffb_pan_display(struct fb_var_screeninfo *, struct fb_info *);
  43
  44 /*
  45  *  Frame buffer operations
  46  */
  47
  48 static struct fb_ops ffb_ops = {
  49         .owner                  = THIS_MODULE,
  50         .fb_setcolreg           = ffb_setcolreg,
  51         .fb_blank               = ffb_blank,
  52         .fb_pan_display         = ffb_pan_display,
  53         .fb_fillrect            = ffb_fillrect,
  54         .fb_copyarea            = ffb_copyarea,
  55         .fb_imageblit           = ffb_imageblit,
  56         .fb_sync                = ffb_sync,
  57         .fb_mmap                = ffb_mmap,
  58         .fb_ioctl               = ffb_ioctl,
  59 #ifdef CONFIG_COMPAT
  60         .fb_compat_ioctl        = sbusfb_compat_ioctl,
  61 #endif
  62 };
  63
  64 /* Register layout and definitions */
  65 #define FFB_SFB8R_VOFF          0x00000000
  66 #define FFB_SFB8G_VOFF          0x00400000
  67 #define FFB_SFB8B_VOFF          0x00800000
  68 #define FFB_SFB8X_VOFF          0x00c00000
  69 #define FFB_SFB32_VOFF          0x01000000
  70 #define FFB_SFB64_VOFF          0x02000000
  71 #define FFB_FBC_REGS_VOFF       0x04000000
  72 #define FFB_BM_FBC_REGS_VOFF    0x04002000
  73 #define FFB_DFB8R_VOFF          0x04004000
  74 #define FFB_DFB8G_VOFF          0x04404000
  75 #define FFB_DFB8B_VOFF          0x04804000
  76 #define FFB_DFB8X_VOFF          0x04c04000
  77 #define FFB_DFB24_VOFF          0x05004000
  78 #define FFB_DFB32_VOFF          0x06004000
  79 #define FFB_DFB422A_VOFF        0x07004000      /* DFB 422 mode write to A */
  80 #define FFB_DFB422AD_VOFF       0x07804000      /* DFB 422 mode with line doubling */
  81 #define FFB_DFB24B_VOFF         0x08004000      /* DFB 24bit mode write to B */
  82 #define FFB_DFB422B_VOFF        0x09004000      /* DFB 422 mode write to B */
  83 #define FFB_DFB422BD_VOFF       0x09804000      /* DFB 422 mode with line doubling */
  84 #define FFB_SFB16Z_VOFF         0x0a004000      /* 16bit mode Z planes */
  85 #define FFB_SFB8Z_VOFF          0x0a404000      /* 8bit mode Z planes */
  86 #define FFB_SFB422_VOFF         0x0ac04000      /* SFB 422 mode write to A/B */
  87 #define FFB_SFB422D_VOFF        0x0b404000      /* SFB 422 mode with line doubling */
  88 #define FFB_FBC_KREGS_VOFF      0x0bc04000
  89 #define FFB_DAC_VOFF            0x0bc06000
  90 #define FFB_PROM_VOFF           0x0bc08000
  91 #define FFB_EXP_VOFF            0x0bc18000
  92
  93 #define FFB_SFB8R_POFF          0x04000000UL
  94 #define FFB_SFB8G_POFF          0x04400000UL
  95 #define FFB_SFB8B_POFF          0x04800000UL
  96 #define FFB_SFB8X_POFF          0x04c00000UL
  97 #define FFB_SFB32_POFF          0x05000000UL
  98 #define FFB_SFB64_POFF          0x06000000UL
  99 #define FFB_FBC_REGS_POFF       0x00600000UL
 100 #define FFB_BM_FBC_REGS_POFF    0x00600000UL
 101 #define FFB_DFB8R_POFF          0x01000000UL
 102 #define FFB_DFB8G_POFF          0x01400000UL
 103 #define FFB_DFB8B_POFF          0x01800000UL
 104 #define FFB_DFB8X_POFF          0x01c00000UL
 105 #define FFB_DFB24_POFF          0x02000000UL
 106 #define FFB_DFB32_POFF          0x03000000UL
 107 #define FFB_FBC_KREGS_POFF      0x00610000UL
 108 #define FFB_DAC_POFF            0x00400000UL
 109 #define FFB_PROM_POFF           0x00000000UL
 110 #define FFB_EXP_POFF            0x00200000UL
 111 #define FFB_DFB422A_POFF        0x09000000UL
 112 #define FFB_DFB422AD_POFF       0x09800000UL
 113 #define FFB_DFB24B_POFF         0x0a000000UL
 114 #define FFB_DFB422B_POFF        0x0b000000UL
 115 #define FFB_DFB422BD_POFF       0x0b800000UL
 116 #define FFB_SFB16Z_POFF         0x0c800000UL
 117 #define FFB_SFB8Z_POFF          0x0c000000UL
 118 #define FFB_SFB422_POFF         0x0d000000UL
 119 #define FFB_SFB422D_POFF        0x0d800000UL
 120
 121 /* Draw operations */
 122 #define FFB_DRAWOP_DOT          0x00
 123 #define FFB_DRAWOP_AADOT        0x01
 124 #define FFB_DRAWOP_BRLINECAP    0x02
 125 #define FFB_DRAWOP_BRLINEOPEN   0x03
 126 #define FFB_DRAWOP_DDLINE       0x04
 127 #define FFB_DRAWOP_AALINE       0x05
 128 #define FFB_DRAWOP_TRIANGLE     0x06
 129 #define FFB_DRAWOP_POLYGON      0x07
 130 #define FFB_DRAWOP_RECTANGLE    0x08
 131 #define FFB_DRAWOP_FASTFILL     0x09
 132 #define FFB_DRAWOP_BCOPY        0x0a
 133 #define FFB_DRAWOP_VSCROLL      0x0b
 134
 135 /* Pixel processor control */
 136 /* Force WID */
 137 #define FFB_PPC_FW_DISABLE      0x800000
 138 #define FFB_PPC_FW_ENABLE       0xc00000
 139 /* Auxiliary clip */
 140 #define FFB_PPC_ACE_DISABLE     0x040000
 141 #define FFB_PPC_ACE_AUX_SUB     0x080000
 142 #define FFB_PPC_ACE_AUX_ADD     0x0c0000
 143 /* Depth cue */
 144 #define FFB_PPC_DCE_DISABLE     0x020000
 145 #define FFB_PPC_DCE_ENABLE      0x030000
 146 /* Alpha blend */
 147 #define FFB_PPC_ABE_DISABLE     0x008000
 148 #define FFB_PPC_ABE_ENABLE      0x00c000
 149 /* View clip */
 150 #define FFB_PPC_VCE_DISABLE     0x001000
 151 #define FFB_PPC_VCE_2D          0x002000
 152 #define FFB_PPC_VCE_3D          0x003000
 153 /* Area pattern */
 154 #define FFB_PPC_APE_DISABLE     0x000800
 155 #define FFB_PPC_APE_ENABLE      0x000c00
 156 /* Transparent background */
 157 #define FFB_PPC_TBE_OPAQUE      0x000200
 158 #define FFB_PPC_TBE_TRANSPARENT 0x000300
 159 /* Z source */
 160 #define FFB_PPC_ZS_VAR          0x000080
 161 #define FFB_PPC_ZS_CONST        0x0000c0
 162 /* Y source */
 163 #define FFB_PPC_YS_VAR          0x000020
 164 #define FFB_PPC_YS_CONST        0x000030
 165 /* X source */
 166 #define FFB_PPC_XS_WID          0x000004
 167 #define FFB_PPC_XS_VAR          0x000008
 168 #define FFB_PPC_XS_CONST        0x00000c
 169 /* Color (BGR) source */
 170 #define FFB_PPC_CS_VAR          0x000002
 171 #define FFB_PPC_CS_CONST        0x000003
 172
 173 #define FFB_ROP_NEW             0x83
 174 #define FFB_ROP_OLD             0x85
 175 #define FFB_ROP_NEW_XOR_OLD     0x86
 176
 177 #define FFB_UCSR_FIFO_MASK      0x00000fff
 178 #define FFB_UCSR_FB_BUSY        0x01000000
 179 #define FFB_UCSR_RP_BUSY        0x02000000
 180 #define FFB_UCSR_ALL_BUSY       (FFB_UCSR_RP_BUSY|FFB_UCSR_FB_BUSY)
 181 #define FFB_UCSR_READ_ERR       0x40000000
 182 #define FFB_UCSR_FIFO_OVFL      0x80000000
 183 #define FFB_UCSR_ALL_ERRORS     (FFB_UCSR_READ_ERR|FFB_UCSR_FIFO_OVFL)
 184
 185 struct ffb_fbc {
 186         /* Next vertex registers */
 187         u32     xxx1[3];
 188         u32     alpha;
 189         u32     red;
 190         u32     green;
 191         u32     blue;
 192         u32     depth;
 193         u32     y;
 194         u32     x;
 195         u32     xxx2[2];
 196         u32     ryf;
 197         u32     rxf;
 198         u32     xxx3[2];
 199
 200         u32     dmyf;
 201         u32     dmxf;
 202         u32     xxx4[2];
 203         u32     ebyi;
 204         u32     ebxi;
 205         u32     xxx5[2];
 206         u32     by;
 207         u32     bx;
 208         u32     dy;
 209         u32     dx;
 210         u32     bh;
 211         u32     bw;
 212         u32     xxx6[2];
 213
 214         u32     xxx7[32];
 215
 216         /* Setup unit vertex state register */
 217         u32     suvtx;
 218         u32     xxx8[63];
 219
 220         /* Control registers */
 221         u32     ppc;
 222         u32     wid;
 223         u32     fg;
 224         u32     bg;
 225         u32     consty;
 226         u32     constz;
 227         u32     xclip;
 228         u32     dcss;
 229         u32     vclipmin;
 230         u32     vclipmax;
 231         u32     vclipzmin;
 232         u32     vclipzmax;
 233         u32     dcsf;
 234         u32     dcsb;
 235         u32     dczf;
 236         u32     dczb;
 237
 238         u32     xxx9;
 239         u32     blendc;
 240         u32     blendc1;
 241         u32     blendc2;
 242         u32     fbramitc;
 243         u32     fbc;
 244         u32     rop;
 245         u32     cmp;
 246         u32     matchab;
 247         u32     matchc;
 248         u32     magnab;
 249         u32     magnc;
 250         u32     fbcfg0;
 251         u32     fbcfg1;
 252         u32     fbcfg2;
 253         u32     fbcfg3;
 254
 255         u32     ppcfg;
 256         u32     pick;
 257         u32     fillmode;
 258         u32     fbramwac;
 259         u32     pmask;
 260         u32     xpmask;
 261         u32     ypmask;
 262         u32     zpmask;
 263         u32     clip0min;
 264         u32     clip0max;
 265         u32     clip1min;
 266         u32     clip1max;
 267         u32     clip2min;
 268         u32     clip2max;
 269         u32     clip3min;
 270         u32     clip3max;
 271
 272         /* New 3dRAM III support regs */
 273         u32     rawblend2;
 274         u32     rawpreblend;
 275         u32     rawstencil;
 276         u32     rawstencilctl;
 277         u32     threedram1;
 278         u32     threedram2;
 279         u32     passin;
 280         u32     rawclrdepth;
 281         u32     rawpmask;
 282         u32     rawcsrc;
 283         u32     rawmatch;
 284         u32     rawmagn;
 285         u32     rawropblend;
 286         u32     rawcmp;
 287         u32     rawwac;
 288         u32     fbramid;
 289
 290         u32     drawop;
 291         u32     xxx10[2];
 292         u32     fontlpat;
 293         u32     xxx11;
 294         u32     fontxy;
 295         u32     fontw;
 296         u32     fontinc;
 297         u32     font;
 298         u32     xxx12[3];
 299         u32     blend2;
 300         u32     preblend;
 301         u32     stencil;
 302         u32     stencilctl;
 303
 304         u32     xxx13[4];
 305         u32     dcss1;
 306         u32     dcss2;
 307         u32     dcss3;
 308         u32     widpmask;
 309         u32     dcs2;
 310         u32     dcs3;
 311         u32     dcs4;
 312         u32     xxx14;
 313         u32     dcd2;
 314         u32     dcd3;
 315         u32     dcd4;
 316         u32     xxx15;
 317
 318         u32     pattern[32];
 319
 320         u32     xxx16[256];
 321
 322         u32     devid;
 323         u32     xxx17[63];
 324
 325         u32     ucsr;
 326         u32     xxx18[31];
 327
 328         u32     mer;
 329 };
 330
 331 struct ffb_dac {
 332         u32     type;
 333         u32     value;
 334         u32     type2;
 335         u32     value2;
 336 };
 337
 338 #define FFB_DAC_UCTRL           0x1001 /* User Control */
 339 #define FFB_DAC_UCTRL_MANREV    0x00000f00 /* 4-bit Manufacturing Revision */
 340 #define FFB_DAC_UCTRL_MANREV_SHIFT 8
 341 #define FFB_DAC_TGEN            0x6000 /* Timing Generator */
 342 #define FFB_DAC_TGEN_VIDE       0x00000001 /* Video Enable */
 343 #define FFB_DAC_DID             0x8000 /* Device Identification */
 344 #define FFB_DAC_DID_PNUM        0x0ffff000 /* Device Part Number */
 345 #define FFB_DAC_DID_PNUM_SHIFT  12
 346 #define FFB_DAC_DID_REV         0xf0000000 /* Device Revision */
 347 #define FFB_DAC_DID_REV_SHIFT   28
 348
 349 #define FFB_DAC_CUR_CTRL        0x100
 350 #define FFB_DAC_CUR_CTRL_P0     0x00000001
 351 #define FFB_DAC_CUR_CTRL_P1     0x00000002
 352
 353 struct ffb_par {
 354         spinlock_t              lock;
 355         struct ffb_fbc __iomem  *fbc;
 356         struct ffb_dac __iomem  *dac;
 357
 358         u32                     flags;
 359 #define FFB_FLAG_AFB            0x00000001 /* AFB m3 or m6 */
 360 #define FFB_FLAG_BLANKED        0x00000002 /* screen is blanked */
 361 #define FFB_FLAG_INVCURSOR      0x00000004 /* DAC has inverted cursor logic */
 362
 363         u32                     fg_cache __attribute__((aligned (8)));
 364         u32                     bg_cache;
 365         u32                     rop_cache;
 366
 367         int                     fifo_cache;
 368
 369         unsigned long           physbase;
 370         unsigned long           fbsize;
 371
 372         int                     board_type;
 373
 374         u32                     pseudo_palette[16];
 375 };
 376
 377 static void FFBFifo(struct ffb_par *par, int n)
 378 {
 379         struct ffb_fbc __iomem *fbc;
 380         int cache = par->fifo_cache;
 381
 382         if (cache - n < 0) {
 383                 fbc = par->fbc;
 384                 do {
 385                         cache = (upa_readl(&fbc->ucsr) & FFB_UCSR_FIFO_MASK);
 386                         cache -= 8;
 387                 } while (cache - n < 0);
 388         }
 389         par->fifo_cache = cache - n;
 390 }
 391
 392 static void FFBWait(struct ffb_par *par)
 393 {
 394         struct ffb_fbc __iomem *fbc;
 395         int limit = 10000;
 396
 397         fbc = par->fbc;
 398         do {
 399                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_BUSY) == 0)
 400                         break;
 401                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0) {
 402                         upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 403                 }
 404                 udelay(10);
 405         } while (--limit > 0);
 406 }
 407
 408 static int ffb_sync(struct fb_info *p)
 409 {
 410         struct ffb_par *par = (struct ffb_par *)p->par;
 411
 412         FFBWait(par);
 413         return 0;
 414 }
 415
 416 static __inline__ void ffb_rop(struct ffb_par *par, u32 rop)
 417 {
 418         if (par->rop_cache != rop) {
 419                 FFBFifo(par, 1);
 420                 upa_writel(rop, &par->fbc->rop);
 421                 par->rop_cache = rop;
 422         }
 423 }
 424
 425 static void ffb_switch_from_graph(struct ffb_par *par)
 426 {
 427         struct ffb_fbc __iomem *fbc = par->fbc;
 428         struct ffb_dac __iomem *dac = par->dac;
 429         unsigned long flags;
 430
 431         spin_lock_irqsave(&par->lock, flags);
 432         FFBWait(par);
 433         par->fifo_cache = 0;
 434         FFBFifo(par, 7);
 435         upa_writel(FFB_PPC_VCE_DISABLE | FFB_PPC_TBE_OPAQUE |
 436                    FFB_PPC_APE_DISABLE | FFB_PPC_CS_CONST,
 437                    &fbc->ppc);
 438         upa_writel(0x2000707f, &fbc->fbc);
 439         upa_writel(par->rop_cache, &fbc->rop);
 440         upa_writel(0xffffffff, &fbc->pmask);
 441         upa_writel((1 << 16) | (0 << 0), &fbc->fontinc);
 442         upa_writel(par->fg_cache, &fbc->fg);
 443         upa_writel(par->bg_cache, &fbc->bg);
 444         FFBWait(par);
 445
 446         /* Disable cursor.  */
 447         upa_writel(FFB_DAC_CUR_CTRL, &dac->type2);
 448         if (par->flags & FFB_FLAG_INVCURSOR)
 449                 upa_writel(0, &dac->value2);
 450         else
 451                 upa_writel((FFB_DAC_CUR_CTRL_P0 |
 452                             FFB_DAC_CUR_CTRL_P1), &dac->value2);
 453
 454         spin_unlock_irqrestore(&par->lock, flags);
 455 }
 456
 457 static int ffb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 458 {
 459         struct ffb_par *par = (struct ffb_par *)info->par;
 460
 461         /* We just use this to catch switches out of
 462          * graphics mode.
 463          */
 464         ffb_switch_from_graph(par);
 465
 466         if (var->xoffset || var->yoffset || var->vmode)
 467                 return -EINVAL;
 468         return 0;
 469 }
 470
 471 /**
 472  *      ffb_fillrect - Draws a rectangle on the screen.
 473  *
 474  *      @info: frame buffer structure that represents a single frame buffer
 475  *      @rect: structure defining the rectagle and operation.
 476  */
 477 static void ffb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 478 {
 479         struct ffb_par *par = (struct ffb_par *)info->par;
 480         struct ffb_fbc __iomem *fbc = par->fbc;
 481         unsigned long flags;
 482         u32 fg;
 483
 484         BUG_ON(rect->rop != ROP_COPY && rect->rop != ROP_XOR);
 485
 486         fg = ((u32 *)info->pseudo_palette)[rect->color];
 487
 488         spin_lock_irqsave(&par->lock, flags);
 489
 490         if (fg != par->fg_cache) {
 491                 FFBFifo(par, 1);
 492                 upa_writel(fg, &fbc->fg);
 493                 par->fg_cache = fg;
 494         }
 495
 496         ffb_rop(par, rect->rop == ROP_COPY ?
 497                      FFB_ROP_NEW :
 498                      FFB_ROP_NEW_XOR_OLD);
 499
 500         FFBFifo(par, 5);
 501         upa_writel(FFB_DRAWOP_RECTANGLE, &fbc->drawop);
 502         upa_writel(rect->dy, &fbc->by);
 503         upa_writel(rect->dx, &fbc->bx);
 504         upa_writel(rect->height, &fbc->bh);
 505         upa_writel(rect->width, &fbc->bw);
 506
 507         spin_unlock_irqrestore(&par->lock, flags);
 508 }
 509
 510 /**
 511  *      ffb_copyarea - Copies on area of the screen to another area.
 512  *
 513  *      @info: frame buffer structure that represents a single frame buffer
 514  *      @area: structure defining the source and destination.
 515  */
 516
 517 static void ffb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 518 {
 519         struct ffb_par *par = (struct ffb_par *)info->par;
 520         struct ffb_fbc __iomem *fbc = par->fbc;
 521         unsigned long flags;
 522
 523         if (area->dx != area->sx ||
 524             area->dy == area->sy) {
 525                 cfb_copyarea(info, area);
 526                 return;
 527         }
 528
 529         spin_lock_irqsave(&par->lock, flags);
 530
 531         ffb_rop(par, FFB_ROP_OLD);
 532
 533         FFBFifo(par, 7);
 534         upa_writel(FFB_DRAWOP_VSCROLL, &fbc->drawop);
 535         upa_writel(area->sy, &fbc->by);
 536         upa_writel(area->sx, &fbc->bx);
 537         upa_writel(area->dy, &fbc->dy);
 538         upa_writel(area->dx, &fbc->dx);
 539         upa_writel(area->height, &fbc->bh);
 540         upa_writel(area->width, &fbc->bw);
 541
 542         spin_unlock_irqrestore(&par->lock, flags);
 543 }
 544
 545 /**
 546  *      ffb_imageblit - Copies a image from system memory to the screen.
 547  *
 548  *      @info: frame buffer structure that represents a single frame buffer
 549  *      @image: structure defining the image.
 550  */
 551 static void ffb_imageblit(struct fb_info *info, const struct fb_image *image)
 552 {
 553         struct ffb_par *par = (struct ffb_par *)info->par;
 554         struct ffb_fbc __iomem *fbc = par->fbc;
 555         const u8 *data = image->data;
 556         unsigned long flags;
 557         u32 fg, bg, xy;
 558         u64 fgbg;
 559         int i, width, stride;
 560
 561         if (image->depth > 1) {
 562                 cfb_imageblit(info, image);
 563                 return;
 564         }
 565
 566         fg = ((u32 *)info->pseudo_palette)[image->fg_color];
 567         bg = ((u32 *)info->pseudo_palette)[image->bg_color];
 568         fgbg = ((u64) fg << 32) | (u64) bg;
 569         xy = (image->dy << 16) | image->dx;
 570         width = image->width;
 571         stride = ((width + 7) >> 3);
 572
 573         spin_lock_irqsave(&par->lock, flags);
 574
 575         if (fgbg != *(u64 *)&par->fg_cache) {
 576                 FFBFifo(par, 2);
 577                 upa_writeq(fgbg, &fbc->fg);
 578                 *(u64 *)&par->fg_cache = fgbg;
 579         }
 580
 581         if (width >= 32) {
 582                 FFBFifo(par, 1);
 583                 upa_writel(32, &fbc->fontw);
 584         }
 585
 586         while (width >= 32) {
 587                 const u8 *next_data = data + 4;
 588
 589                 FFBFifo(par, 1);
 590                 upa_writel(xy, &fbc->fontxy);
 591                 xy += (32 << 0);
 592
 593                 for (i = 0; i < image->height; i++) {
 594                         u32 val = (((u32)data[0] << 24) |
 595                                    ((u32)data[1] << 16) |
 596                                    ((u32)data[2] <<  8) |
 597                                    ((u32)data[3] <<  0));
 598                         FFBFifo(par, 1);
 599                         upa_writel(val, &fbc->font);
 600
 601                         data += stride;
 602                 }
 603
 604                 data = next_data;
 605                 width -= 32;
 606         }
 607
 608         if (width) {
 609                 FFBFifo(par, 2);
 610                 upa_writel(width, &fbc->fontw);
 611                 upa_writel(xy, &fbc->fontxy);
 612
 613                 for (i = 0; i < image->height; i++) {
 614                         u32 val = (((u32)data[0] << 24) |
 615                                    ((u32)data[1] << 16) |
 616                                    ((u32)data[2] <<  8) |
 617                                    ((u32)data[3] <<  0));
 618                         FFBFifo(par, 1);
 619                         upa_writel(val, &fbc->font);
 620
 621                         data += stride;
 622                 }
 623         }
 624
 625         spin_unlock_irqrestore(&par->lock, flags);
 626 }
 627
 628 static void ffb_fixup_var_rgb(struct fb_var_screeninfo *var)
 629 {
 630         var->red.offset = 0;
 631         var->red.length = 8;
 632         var->green.offset = 8;
 633         var->green.length = 8;
 634         var->blue.offset = 16;
 635         var->blue.length = 8;
 636         var->transp.offset = 0;
 637         var->transp.length = 0;
 638 }
 639
 640 /**
 641  *      ffb_setcolreg - Sets a color register.
 642  *
 643  *      @regno: boolean, 0 copy local, 1 get_user() function
 644  *      @red: frame buffer colormap structure
 645  *      @green: The green value which can be up to 16 bits wide
 646  *      @blue:  The blue value which can be up to 16 bits wide.
 647  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 648  *      @info: frame buffer info structure
 649  */
 650 static int ffb_setcolreg(unsigned regno,
 651                          unsigned red, unsigned green, unsigned blue,
 652                          unsigned transp, struct fb_info *info)
 653 {
 654         u32 value;
 655
 656         if (regno >= 16)
 657                 return 1;
 658
 659         red >>= 8;
 660         green >>= 8;
 661         blue >>= 8;
 662
 663         value = (blue << 16) | (green << 8) | red;
 664         ((u32 *)info->pseudo_palette)[regno] = value;
 665
 666         return 0;
 667 }
 668
 669 /**
 670  *      ffb_blank - Optional function.  Blanks the display.
 671  *      @blank_mode: the blank mode we want.
 672  *      @info: frame buffer structure that represents a single frame buffer
 673  */
 674 static int ffb_blank(int blank, struct fb_info *info)
 675 {
 676         struct ffb_par *par = (struct ffb_par *)info->par;
 677         struct ffb_dac __iomem *dac = par->dac;
 678         unsigned long flags;
 679         u32 val;
 680         int i;
 681
 682         spin_lock_irqsave(&par->lock, flags);
 683
 684         FFBWait(par);
 685
 686         upa_writel(FFB_DAC_TGEN, &dac->type);
 687         val = upa_readl(&dac->value);
 688         switch (blank) {
 689         case FB_BLANK_UNBLANK: /* Unblanking */
 690                 val |= FFB_DAC_TGEN_VIDE;
 691                 par->flags &= ~FFB_FLAG_BLANKED;
 692                 break;
 693
 694         case FB_BLANK_NORMAL: /* Normal blanking */
 695         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 696         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 697         case FB_BLANK_POWERDOWN: /* Poweroff */
 698                 val &= ~FFB_DAC_TGEN_VIDE;
 699                 par->flags |= FFB_FLAG_BLANKED;
 700                 break;
 701         }
 702         upa_writel(FFB_DAC_TGEN, &dac->type);
 703         upa_writel(val, &dac->value);
 704         for (i = 0; i < 10; i++) {
 705                 upa_writel(FFB_DAC_TGEN, &dac->type);
 706                 upa_readl(&dac->value);
 707         }
 708
 709         spin_unlock_irqrestore(&par->lock, flags);
 710
 711         return 0;
 712 }
 713
 714 static struct sbus_mmap_map ffb_mmap_map[] = {
 715         {
 716                 .voff   = FFB_SFB8R_VOFF,
 717                 .poff   = FFB_SFB8R_POFF,
 718                 .size   = 0x0400000
 719         },
 720         {
 721                 .voff   = FFB_SFB8G_VOFF,
 722                 .poff   = FFB_SFB8G_POFF,
 723                 .size   = 0x0400000
 724         },
 725         {
 726                 .voff   = FFB_SFB8B_VOFF,
 727                 .poff   = FFB_SFB8B_POFF,
 728                 .size   = 0x0400000
 729         },
 730         {
 731                 .voff   = FFB_SFB8X_VOFF,
 732                 .poff   = FFB_SFB8X_POFF,
 733                 .size   = 0x0400000
 734         },
 735         {
 736                 .voff   = FFB_SFB32_VOFF,
 737                 .poff   = FFB_SFB32_POFF,
 738                 .size   = 0x1000000
 739         },
 740         {
 741                 .voff   = FFB_SFB64_VOFF,
 742                 .poff   = FFB_SFB64_POFF,
 743                 .size   = 0x2000000
 744         },
 745         {
 746                 .voff   = FFB_FBC_REGS_VOFF,
 747                 .poff   = FFB_FBC_REGS_POFF,
 748                 .size   = 0x0002000
 749         },
 750         {
 751                 .voff   = FFB_BM_FBC_REGS_VOFF,
 752                 .poff   = FFB_BM_FBC_REGS_POFF,
 753                 .size   = 0x0002000
 754         },
 755         {
 756                 .voff   = FFB_DFB8R_VOFF,
 757                 .poff   = FFB_DFB8R_POFF,
 758                 .size   = 0x0400000
 759         },
 760         {
 761                 .voff   = FFB_DFB8G_VOFF,
 762                 .poff   = FFB_DFB8G_POFF,
 763                 .size   = 0x0400000
 764         },
 765         {
 766                 .voff   = FFB_DFB8B_VOFF,
 767                 .poff   = FFB_DFB8B_POFF,
 768                 .size   = 0x0400000
 769         },
 770         {
 771                 .voff   = FFB_DFB8X_VOFF,
 772                 .poff   = FFB_DFB8X_POFF,
 773                 .size   = 0x0400000
 774         },
 775         {
 776                 .voff   = FFB_DFB24_VOFF,
 777                 .poff   = FFB_DFB24_POFF,
 778                 .size   = 0x1000000
 779         },
 780         {
 781                 .voff   = FFB_DFB32_VOFF,
 782                 .poff   = FFB_DFB32_POFF,
 783                 .size   = 0x1000000
 784         },
 785         {
 786                 .voff   = FFB_FBC_KREGS_VOFF,
 787                 .poff   = FFB_FBC_KREGS_POFF,
 788                 .size   = 0x0002000
 789         },
 790         {
 791                 .voff   = FFB_DAC_VOFF,
 792                 .poff   = FFB_DAC_POFF,
 793                 .size   = 0x0002000
 794         },
 795         {
 796                 .voff   = FFB_PROM_VOFF,
 797                 .poff   = FFB_PROM_POFF,
 798                 .size   = 0x0010000
 799         },
 800         {
 801                 .voff   = FFB_EXP_VOFF,
 802                 .poff   = FFB_EXP_POFF,
 803                 .size   = 0x0002000
 804         },
 805         {
 806                 .voff   = FFB_DFB422A_VOFF,
 807                 .poff   = FFB_DFB422A_POFF,
 808                 .size   = 0x0800000
 809         },
 810         {
 811                 .voff   = FFB_DFB422AD_VOFF,
 812                 .poff   = FFB_DFB422AD_POFF,
 813                 .size   = 0x0800000
 814         },
 815         {
 816                 .voff   = FFB_DFB24B_VOFF,
 817                 .poff   = FFB_DFB24B_POFF,
 818                 .size   = 0x1000000
 819         },
 820         {
 821                 .voff   = FFB_DFB422B_VOFF,
 822                 .poff   = FFB_DFB422B_POFF,
 823                 .size   = 0x0800000
 824         },
 825         {
 826                 .voff   = FFB_DFB422BD_VOFF,
 827                 .poff   = FFB_DFB422BD_POFF,
 828                 .size   = 0x0800000
 829         },
 830         {
 831                 .voff   = FFB_SFB16Z_VOFF,
 832                 .poff   = FFB_SFB16Z_POFF,
 833                 .size   = 0x0800000
 834         },
 835         {
 836                 .voff   = FFB_SFB8Z_VOFF,
 837                 .poff   = FFB_SFB8Z_POFF,
 838                 .size   = 0x0800000
 839         },
 840         {
 841                 .voff   = FFB_SFB422_VOFF,
 842                 .poff   = FFB_SFB422_POFF,
 843                 .size   = 0x0800000
 844         },
 845         {
 846                 .voff   = FFB_SFB422D_VOFF,
 847                 .poff   = FFB_SFB422D_POFF,
 848                 .size   = 0x0800000
 849         },
 850         { .size = 0 }
 851 };
 852
 853 static int ffb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 854 {
 855         struct ffb_par *par = (struct ffb_par *)info->par;
 856
 857         return sbusfb_mmap_helper(ffb_mmap_map,
 858                                   par->physbase, par->fbsize,
 859                                   0, vma);
 860 }
 861
 862 static int ffb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 863 {
 864         struct ffb_par *par = (struct ffb_par *)info->par;
 865
 866         return sbusfb_ioctl_helper(cmd, arg, info,
 867                                    FBTYPE_CREATOR, 24, par->fbsize);
 868 }
 869
 870 /*
 871  *  Initialisation
 872  */
 873
 874 static void ffb_init_fix(struct fb_info *info)
 875 {
 876         struct ffb_par *par = (struct ffb_par *)info->par;
 877         const char *ffb_type_name;
 878
 879         if (!(par->flags & FFB_FLAG_AFB)) {
 880                 if ((par->board_type & 0x7) == 0x3)
 881                         ffb_type_name = "Creator 3D";
 882                 else
 883                         ffb_type_name = "Creator";
 884         } else
 885                 ffb_type_name = "Elite 3D";
 886
 887         strlcpy(info->fix.id, ffb_type_name, sizeof(info->fix.id));
 888
 889         info->fix.type = FB_TYPE_PACKED_PIXELS;
 890         info->fix.visual = FB_VISUAL_TRUECOLOR;
 891
 892         /* Framebuffer length is the same regardless of resolution. */
 893         info->fix.line_length = 8192;
 894
 895         info->fix.accel = FB_ACCEL_SUN_CREATOR;
 896 }
 897
 898 static int __devinit ffb_probe(struct of_device *op,
 899                                const struct of_device_id *match)
 900 {
 901         struct device_node *dp = op->node;
 902         struct ffb_fbc __iomem *fbc;
 903         struct ffb_dac __iomem *dac;
 904         struct fb_info *info;
 905         struct ffb_par *par;
 906         u32 dac_pnum, dac_rev, dac_mrev;
 907         int err;
 908
 909         info = framebuffer_alloc(sizeof(struct ffb_par), &op->dev);
 910
 911         err = -ENOMEM;
 912         if (!info)
 913                 goto out_err;
 914
 915         par = info->par;
 916
 917         spin_lock_init(&par->lock);
 918         par->fbc = of_ioremap(&op->resource[2], 0,
 919                               sizeof(struct ffb_fbc), "ffb fbc");
 920         if (!par->fbc)
 921                 goto out_release_fb;
 922
 923         par->dac = of_ioremap(&op->resource[1], 0,
 924                               sizeof(struct ffb_dac), "ffb dac");
 925         if (!par->dac)
 926                 goto out_unmap_fbc;
 927
 928         par->rop_cache = FFB_ROP_NEW;
 929         par->physbase = op->resource[0].start;
 930
 931         /* Don't mention copyarea, so SCROLL_REDRAW is always
 932          * used.  It is the fastest on this chip.
 933          */
 934         info->flags = (FBINFO_DEFAULT |
 935                        /* FBINFO_HWACCEL_COPYAREA | */
 936                        FBINFO_HWACCEL_FILLRECT |
 937                        FBINFO_HWACCEL_IMAGEBLIT);
 938
 939         info->fbops = &ffb_ops;
 940
 941         info->screen_base = (char *) par->physbase + FFB_DFB24_POFF;
 942         info->pseudo_palette = par->pseudo_palette;
 943
 944         sbusfb_fill_var(&info->var, dp->node, 32);
 945         par->fbsize = PAGE_ALIGN(info->var.xres * info->var.yres * 4);
 946         ffb_fixup_var_rgb(&info->var);
 947
 948         info->var.accel_flags = FB_ACCELF_TEXT;
 949
 950         if (!strcmp(dp->name, "SUNW,afb"))
 951                 par->flags |= FFB_FLAG_AFB;
 952
 953         par->board_type = of_getintprop_default(dp, "board_type", 0);
 954
 955         fbc = par->fbc;
 956         if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
 957                 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 958
 959         dac = par->dac;
 960         upa_writel(FFB_DAC_DID, &dac->type);
 961         dac_pnum = upa_readl(&dac->value);
 962         dac_rev = (dac_pnum & FFB_DAC_DID_REV) >> FFB_DAC_DID_REV_SHIFT;
 963         dac_pnum = (dac_pnum & FFB_DAC_DID_PNUM) >> FFB_DAC_DID_PNUM_SHIFT;
 964
 965         upa_writel(FFB_DAC_UCTRL, &dac->type);
 966         dac_mrev = upa_readl(&dac->value);
 967         dac_mrev = (dac_mrev & FFB_DAC_UCTRL_MANREV) >>
 968                 FFB_DAC_UCTRL_MANREV_SHIFT;
 969
 970         /* Elite3D has different DAC revision numbering, and no DAC revisions
 971          * have the reversed meaning of cursor enable.  Otherwise, Pacifica 1
 972          * ramdacs with manufacturing revision less than 3 have inverted
 973          * cursor logic.  We identify Pacifica 1 as not Pacifica 2, the
 974          * latter having a part number value of 0x236e.
 975          */
 976         if ((par->flags & FFB_FLAG_AFB) || dac_pnum == 0x236e) {
 977                 par->flags &= ~FFB_FLAG_INVCURSOR;
 978         } else {
 979                 if (dac_mrev < 3)
 980                         par->flags |= FFB_FLAG_INVCURSOR;
 981         }
 982
 983         ffb_switch_from_graph(par);
 984
 985         /* Unblank it just to be sure.  When there are multiple
 986          * FFB/AFB cards in the system, or it is not the OBP
 987          * chosen console, it will have video outputs off in
 988          * the DAC.
 989          */
 990         ffb_blank(0, info);
 991
 992         if (fb_alloc_cmap(&info->cmap, 256, 0))
 993                 goto out_unmap_dac;
 994
 995         ffb_init_fix(info);
 996
 997         err = register_framebuffer(info);
 998         if (err < 0)
 999                 goto out_dealloc_cmap;
1000
1001         dev_set_drvdata(&op->dev, info);
1002
1003         printk(KERN_INFO "%s: %s at %016lx, type %d, "
1004                "DAC pnum[%x] rev[%d] manuf_rev[%d]\n",
1005                dp->full_name,
1006                ((par->flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
1007                par->physbase, par->board_type,
1008                dac_pnum, dac_rev, dac_mrev);
1009
1010         return 0;
1011
1012 out_dealloc_cmap:
1013         fb_dealloc_cmap(&info->cmap);
1014
1015 out_unmap_dac:
1016         of_iounmap(&op->resource[2], par->fbc, sizeof(struct ffb_fbc));
1017
1018 out_unmap_fbc:
1019         of_iounmap(&op->resource[2], par->fbc, sizeof(struct ffb_fbc));
1020
1021 out_release_fb:
1022         framebuffer_release(info);
1023
1024 out_err:
1025         return err;
1026 }
1027
1028 static int __devexit ffb_remove(struct of_device *op)
1029 {
1030         struct fb_info *info = dev_get_drvdata(&op->dev);
1031         struct ffb_par *par = info->par;
1032
1033         unregister_framebuffer(info);
1034         fb_dealloc_cmap(&info->cmap);
1035
1036         of_iounmap(&op->resource[2], par->fbc, sizeof(struct ffb_fbc));
1037         of_iounmap(&op->resource[1], par->dac, sizeof(struct ffb_dac));
1038
1039         framebuffer_release(info);
1040
1041         dev_set_drvdata(&op->dev, NULL);
1042
1043         return 0;
1044 }
1045
1046 static struct of_device_id ffb_match[] = {
1047         {
1048                 .name = "SUNW,ffb",
1049         },
1050         {
1051                 .name = "SUNW,afb",
1052         },
1053         {},
1054 };
1055 MODULE_DEVICE_TABLE(of, ffb_match);
1056
1057 static struct of_platform_driver ffb_driver = {
1058         .name           = "ffb",
1059         .match_table    = ffb_match,
1060         .probe          = ffb_probe,
1061         .remove         = __devexit_p(ffb_remove),
1062 };
1063
1064 static int __init ffb_init(void)
1065 {
1066         if (fb_get_options("ffb", NULL))
1067                 return -ENODEV;
1068
1069         return of_register_driver(&ffb_driver, &of_bus_type);
1070 }
1071
1072 static void __exit ffb_exit(void)
1073 {
1074         of_unregister_driver(&ffb_driver);
1075 }
1076
1077 module_init(ffb_init);
1078 module_exit(ffb_exit);
1079
1080 MODULE_DESCRIPTION("framebuffer driver for Creator/Elite3D chipsets");
1081 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
1082 MODULE_VERSION("2.0");
1083 MODULE_LICENSE("GPL");