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         u32                     pseudo_palette[16];
 376 };
 377
 378 static void FFBFifo(struct ffb_par *par, int n)
 379 {
 380         struct ffb_fbc __iomem *fbc;
 381         int cache = par->fifo_cache;
 382
 383         if (cache - n < 0) {
 384                 fbc = par->fbc;
 385                 do {    cache = (upa_readl(&fbc->ucsr) & FFB_UCSR_FIFO_MASK) - 8;
 386                 } while (cache - n < 0);
 387         }
 388         par->fifo_cache = cache - n;
 389 }
 390
 391 static void FFBWait(struct ffb_par *par)
 392 {
 393         struct ffb_fbc __iomem *fbc;
 394         int limit = 10000;
 395
 396         fbc = par->fbc;
 397         do {
 398                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_BUSY) == 0)
 399                         break;
 400                 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0) {
 401                         upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 402                 }
 403                 udelay(10);
 404         } while(--limit > 0);
 405 }
 406
 407 static int ffb_sync(struct fb_info *p)
 408 {
 409         struct ffb_par *par = (struct ffb_par *) p->par;
 410
 411         FFBWait(par);
 412         return 0;
 413 }
 414
 415 static __inline__ void ffb_rop(struct ffb_par *par, u32 rop)
 416 {
 417         if (par->rop_cache != rop) {
 418                 FFBFifo(par, 1);
 419                 upa_writel(rop, &par->fbc->rop);
 420                 par->rop_cache = rop;
 421         }
 422 }
 423
 424 static void ffb_switch_from_graph(struct ffb_par *par)
 425 {
 426         struct ffb_fbc __iomem *fbc = par->fbc;
 427         struct ffb_dac __iomem *dac = par->dac;
 428         unsigned long flags;
 429
 430         spin_lock_irqsave(&par->lock, flags);
 431         FFBWait(par);
 432         par->fifo_cache = 0;
 433         FFBFifo(par, 7);
 434         upa_writel(FFB_PPC_VCE_DISABLE|FFB_PPC_TBE_OPAQUE|
 435                    FFB_PPC_APE_DISABLE|FFB_PPC_CS_CONST,
 436                    &fbc->ppc);
 437         upa_writel(0x2000707f, &fbc->fbc);
 438         upa_writel(par->rop_cache, &fbc->rop);
 439         upa_writel(0xffffffff, &fbc->pmask);
 440         upa_writel((1 << 16) | (0 << 0), &fbc->fontinc);
 441         upa_writel(par->fg_cache, &fbc->fg);
 442         upa_writel(par->bg_cache, &fbc->bg);
 443         FFBWait(par);
 444
 445         /* Disable cursor.  */
 446         upa_writel(FFB_DAC_CUR_CTRL, &dac->type2);
 447         if (par->flags & FFB_FLAG_INVCURSOR)
 448                 upa_writel(0, &dac->value2);
 449         else
 450                 upa_writel((FFB_DAC_CUR_CTRL_P0 |
 451                             FFB_DAC_CUR_CTRL_P1), &dac->value2);
 452
 453         spin_unlock_irqrestore(&par->lock, flags);
 454 }
 455
 456 static int ffb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 457 {
 458         struct ffb_par *par = (struct ffb_par *) info->par;
 459
 460         /* We just use this to catch switches out of
 461          * graphics mode.
 462          */
 463         ffb_switch_from_graph(par);
 464
 465         if (var->xoffset || var->yoffset || var->vmode)
 466                 return -EINVAL;
 467         return 0;
 468 }
 469
 470 /**
 471  *      ffb_fillrect - REQUIRED function. Can use generic routines if
 472  *                     non acclerated hardware and packed pixel based.
 473  *                     Draws a rectangle on the screen.
 474  *
 475  *      @info: frame buffer structure that represents a single frame buffer
 476  *      @rect: structure defining the rectagle and operation.
 477  */
 478 static void ffb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 479 {
 480         struct ffb_par *par = (struct ffb_par *) info->par;
 481         struct ffb_fbc __iomem *fbc = par->fbc;
 482         unsigned long flags;
 483         u32 fg;
 484
 485         BUG_ON(rect->rop != ROP_COPY && rect->rop != ROP_XOR);
 486
 487         fg = ((u32 *)info->pseudo_palette)[rect->color];
 488
 489         spin_lock_irqsave(&par->lock, flags);
 490
 491         if (fg != par->fg_cache) {
 492                 FFBFifo(par, 1);
 493                 upa_writel(fg, &fbc->fg);
 494                 par->fg_cache = fg;
 495         }
 496
 497         ffb_rop(par, (rect->rop == ROP_COPY ?
 498                       FFB_ROP_NEW :
 499                       FFB_ROP_NEW_XOR_OLD));
 500
 501         FFBFifo(par, 5);
 502         upa_writel(FFB_DRAWOP_RECTANGLE, &fbc->drawop);
 503         upa_writel(rect->dy, &fbc->by);
 504         upa_writel(rect->dx, &fbc->bx);
 505         upa_writel(rect->height, &fbc->bh);
 506         upa_writel(rect->width, &fbc->bw);
 507
 508         spin_unlock_irqrestore(&par->lock, flags);
 509 }
 510
 511 /**
 512  *      ffb_copyarea - REQUIRED function. Can use generic routines if
 513  *                     non acclerated hardware and packed pixel based.
 514  *                     Copies on area of the screen to another area.
 515  *
 516  *      @info: frame buffer structure that represents a single frame buffer
 517  *      @area: structure defining the source and destination.
 518  */
 519
 520 static void
 521 ffb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 522 {
 523         struct ffb_par *par = (struct ffb_par *) info->par;
 524         struct ffb_fbc __iomem *fbc = par->fbc;
 525         unsigned long flags;
 526
 527         if (area->dx != area->sx ||
 528             area->dy == area->sy) {
 529                 cfb_copyarea(info, area);
 530                 return;
 531         }
 532
 533         spin_lock_irqsave(&par->lock, flags);
 534
 535         ffb_rop(par, FFB_ROP_OLD);
 536
 537         FFBFifo(par, 7);
 538         upa_writel(FFB_DRAWOP_VSCROLL, &fbc->drawop);
 539         upa_writel(area->sy, &fbc->by);
 540         upa_writel(area->sx, &fbc->bx);
 541         upa_writel(area->dy, &fbc->dy);
 542         upa_writel(area->dx, &fbc->dx);
 543         upa_writel(area->height, &fbc->bh);
 544         upa_writel(area->width, &fbc->bw);
 545
 546         spin_unlock_irqrestore(&par->lock, flags);
 547 }
 548
 549 /**
 550  *      ffb_imageblit - REQUIRED function. Can use generic routines if
 551  *                      non acclerated hardware and packed pixel based.
 552  *                      Copies a image from system memory to the screen.
 553  *
 554  *      @info: frame buffer structure that represents a single frame buffer
 555  *      @image: structure defining the image.
 556  */
 557 static void ffb_imageblit(struct fb_info *info, const struct fb_image *image)
 558 {
 559         struct ffb_par *par = (struct ffb_par *) info->par;
 560         struct ffb_fbc __iomem *fbc = par->fbc;
 561         const u8 *data = image->data;
 562         unsigned long flags;
 563         u32 fg, bg, xy;
 564         u64 fgbg;
 565         int i, width, stride;
 566
 567         if (image->depth > 1) {
 568                 cfb_imageblit(info, image);
 569                 return;
 570         }
 571
 572         fg = ((u32 *)info->pseudo_palette)[image->fg_color];
 573         bg = ((u32 *)info->pseudo_palette)[image->bg_color];
 574         fgbg = ((u64) fg << 32) | (u64) bg;
 575         xy = (image->dy << 16) | image->dx;
 576         width = image->width;
 577         stride = ((width + 7) >> 3);
 578
 579         spin_lock_irqsave(&par->lock, flags);
 580
 581         if (fgbg != *(u64 *)&par->fg_cache) {
 582                 FFBFifo(par, 2);
 583                 upa_writeq(fgbg, &fbc->fg);
 584                 *(u64 *)&par->fg_cache = fgbg;
 585         }
 586
 587         if (width >= 32) {
 588                 FFBFifo(par, 1);
 589                 upa_writel(32, &fbc->fontw);
 590         }
 591
 592         while (width >= 32) {
 593                 const u8 *next_data = data + 4;
 594
 595                 FFBFifo(par, 1);
 596                 upa_writel(xy, &fbc->fontxy);
 597                 xy += (32 << 0);
 598
 599                 for (i = 0; i < image->height; i++) {
 600                         u32 val = (((u32)data[0] << 24) |
 601                                    ((u32)data[1] << 16) |
 602                                    ((u32)data[2] <<  8) |
 603                                    ((u32)data[3] <<  0));
 604                         FFBFifo(par, 1);
 605                         upa_writel(val, &fbc->font);
 606
 607                         data += stride;
 608                 }
 609
 610                 data = next_data;
 611                 width -= 32;
 612         }
 613
 614         if (width) {
 615                 FFBFifo(par, 2);
 616                 upa_writel(width, &fbc->fontw);
 617                 upa_writel(xy, &fbc->fontxy);
 618
 619                 for (i = 0; i < image->height; i++) {
 620                         u32 val = (((u32)data[0] << 24) |
 621                                    ((u32)data[1] << 16) |
 622                                    ((u32)data[2] <<  8) |
 623                                    ((u32)data[3] <<  0));
 624                         FFBFifo(par, 1);
 625                         upa_writel(val, &fbc->font);
 626
 627                         data += stride;
 628                 }
 629         }
 630
 631         spin_unlock_irqrestore(&par->lock, flags);
 632 }
 633
 634 static void ffb_fixup_var_rgb(struct fb_var_screeninfo *var)
 635 {
 636         var->red.offset = 0;
 637         var->red.length = 8;
 638         var->green.offset = 8;
 639         var->green.length = 8;
 640         var->blue.offset = 16;
 641         var->blue.length = 8;
 642         var->transp.offset = 0;
 643         var->transp.length = 0;
 644 }
 645
 646 /**
 647  *      ffb_setcolreg - Optional function. Sets a color register.
 648  *      @regno: boolean, 0 copy local, 1 get_user() function
 649  *      @red: frame buffer colormap structure
 650  *      @green: The green value which can be up to 16 bits wide
 651  *      @blue:  The blue value which can be up to 16 bits wide.
 652  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 653  *      @info: frame buffer info structure
 654  */
 655 static int ffb_setcolreg(unsigned regno,
 656                          unsigned red, unsigned green, unsigned blue,
 657                          unsigned transp, struct fb_info *info)
 658 {
 659         u32 value;
 660
 661         if (regno >= 16)
 662                 return 1;
 663
 664         red >>= 8;
 665         green >>= 8;
 666         blue >>= 8;
 667
 668         value = (blue << 16) | (green << 8) | red;
 669         ((u32 *)info->pseudo_palette)[regno] = value;
 670
 671         return 0;
 672 }
 673
 674 /**
 675  *      ffb_blank - Optional function.  Blanks the display.
 676  *      @blank_mode: the blank mode we want.
 677  *      @info: frame buffer structure that represents a single frame buffer
 678  */
 679 static int
 680 ffb_blank(int blank, struct fb_info *info)
 681 {
 682         struct ffb_par *par = (struct ffb_par *) info->par;
 683         struct ffb_dac __iomem *dac = par->dac;
 684         unsigned long flags;
 685         u32 val;
 686         int i;
 687
 688         spin_lock_irqsave(&par->lock, flags);
 689
 690         FFBWait(par);
 691
 692         upa_writel(FFB_DAC_TGEN, &dac->type);
 693         val = upa_readl(&dac->value);
 694         switch (blank) {
 695         case FB_BLANK_UNBLANK: /* Unblanking */
 696                 val |= FFB_DAC_TGEN_VIDE;
 697                 par->flags &= ~FFB_FLAG_BLANKED;
 698                 break;
 699
 700         case FB_BLANK_NORMAL: /* Normal blanking */
 701         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 702         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 703         case FB_BLANK_POWERDOWN: /* Poweroff */
 704                 val &= ~FFB_DAC_TGEN_VIDE;
 705                 par->flags |= FFB_FLAG_BLANKED;
 706                 break;
 707         }
 708         upa_writel(FFB_DAC_TGEN, &dac->type);
 709         upa_writel(val, &dac->value);
 710         for (i = 0; i < 10; i++) {
 711                 upa_writel(FFB_DAC_TGEN, &dac->type);
 712                 upa_readl(&dac->value);
 713         }
 714
 715         spin_unlock_irqrestore(&par->lock, flags);
 716
 717         return 0;
 718 }
 719
 720 static struct sbus_mmap_map ffb_mmap_map[] = {
 721         {
 722                 .voff   = FFB_SFB8R_VOFF,
 723                 .poff   = FFB_SFB8R_POFF,
 724                 .size   = 0x0400000
 725         },
 726         {
 727                 .voff   = FFB_SFB8G_VOFF,
 728                 .poff   = FFB_SFB8G_POFF,
 729                 .size   = 0x0400000
 730         },
 731         {
 732                 .voff   = FFB_SFB8B_VOFF,
 733                 .poff   = FFB_SFB8B_POFF,
 734                 .size   = 0x0400000
 735         },
 736         {
 737                 .voff   = FFB_SFB8X_VOFF,
 738                 .poff   = FFB_SFB8X_POFF,
 739                 .size   = 0x0400000
 740         },
 741         {
 742                 .voff   = FFB_SFB32_VOFF,
 743                 .poff   = FFB_SFB32_POFF,
 744                 .size   = 0x1000000
 745         },
 746         {
 747                 .voff   = FFB_SFB64_VOFF,
 748                 .poff   = FFB_SFB64_POFF,
 749                 .size   = 0x2000000
 750         },
 751         {
 752                 .voff   = FFB_FBC_REGS_VOFF,
 753                 .poff   = FFB_FBC_REGS_POFF,
 754                 .size   = 0x0002000
 755         },
 756         {
 757                 .voff   = FFB_BM_FBC_REGS_VOFF,
 758                 .poff   = FFB_BM_FBC_REGS_POFF,
 759                 .size   = 0x0002000
 760         },
 761         {
 762                 .voff   = FFB_DFB8R_VOFF,
 763                 .poff   = FFB_DFB8R_POFF,
 764                 .size   = 0x0400000
 765         },
 766         {
 767                 .voff   = FFB_DFB8G_VOFF,
 768                 .poff   = FFB_DFB8G_POFF,
 769                 .size   = 0x0400000
 770         },
 771         {
 772                 .voff   = FFB_DFB8B_VOFF,
 773                 .poff   = FFB_DFB8B_POFF,
 774                 .size   = 0x0400000
 775         },
 776         {
 777                 .voff   = FFB_DFB8X_VOFF,
 778                 .poff   = FFB_DFB8X_POFF,
 779                 .size   = 0x0400000
 780         },
 781         {
 782                 .voff   = FFB_DFB24_VOFF,
 783                 .poff   = FFB_DFB24_POFF,
 784                 .size   = 0x1000000
 785         },
 786         {
 787                 .voff   = FFB_DFB32_VOFF,
 788                 .poff   = FFB_DFB32_POFF,
 789                 .size   = 0x1000000
 790         },
 791         {
 792                 .voff   = FFB_FBC_KREGS_VOFF,
 793                 .poff   = FFB_FBC_KREGS_POFF,
 794                 .size   = 0x0002000
 795         },
 796         {
 797                 .voff   = FFB_DAC_VOFF,
 798                 .poff   = FFB_DAC_POFF,
 799                 .size   = 0x0002000
 800         },
 801         {
 802                 .voff   = FFB_PROM_VOFF,
 803                 .poff   = FFB_PROM_POFF,
 804                 .size   = 0x0010000
 805         },
 806         {
 807                 .voff   = FFB_EXP_VOFF,
 808                 .poff   = FFB_EXP_POFF,
 809                 .size   = 0x0002000
 810         },
 811         {
 812                 .voff   = FFB_DFB422A_VOFF,
 813                 .poff   = FFB_DFB422A_POFF,
 814                 .size   = 0x0800000
 815         },
 816         {
 817                 .voff   = FFB_DFB422AD_VOFF,
 818                 .poff   = FFB_DFB422AD_POFF,
 819                 .size   = 0x0800000
 820         },
 821         {
 822                 .voff   = FFB_DFB24B_VOFF,
 823                 .poff   = FFB_DFB24B_POFF,
 824                 .size   = 0x1000000
 825         },
 826         {
 827                 .voff   = FFB_DFB422B_VOFF,
 828                 .poff   = FFB_DFB422B_POFF,
 829                 .size   = 0x0800000
 830         },
 831         {
 832                 .voff   = FFB_DFB422BD_VOFF,
 833                 .poff   = FFB_DFB422BD_POFF,
 834                 .size   = 0x0800000
 835         },
 836         {
 837                 .voff   = FFB_SFB16Z_VOFF,
 838                 .poff   = FFB_SFB16Z_POFF,
 839                 .size   = 0x0800000
 840         },
 841         {
 842                 .voff   = FFB_SFB8Z_VOFF,
 843                 .poff   = FFB_SFB8Z_POFF,
 844                 .size   = 0x0800000
 845         },
 846         {
 847                 .voff   = FFB_SFB422_VOFF,
 848                 .poff   = FFB_SFB422_POFF,
 849                 .size   = 0x0800000
 850         },
 851         {
 852                 .voff   = FFB_SFB422D_VOFF,
 853                 .poff   = FFB_SFB422D_POFF,
 854                 .size   = 0x0800000
 855         },
 856         { .size = 0 }
 857 };
 858
 859 static int ffb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 860 {
 861         struct ffb_par *par = (struct ffb_par *)info->par;
 862
 863         return sbusfb_mmap_helper(ffb_mmap_map,
 864                                   par->physbase, par->fbsize,
 865                                   0, vma);
 866 }
 867
 868 static int ffb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 869 {
 870         struct ffb_par *par = (struct ffb_par *) info->par;
 871
 872         return sbusfb_ioctl_helper(cmd, arg, info,
 873                                    FBTYPE_CREATOR, 24, par->fbsize);
 874 }
 875
 876 /*
 877  *  Initialisation
 878  */
 879
 880 static void
 881 ffb_init_fix(struct fb_info *info)
 882 {
 883         struct ffb_par *par = (struct ffb_par *)info->par;
 884         const char *ffb_type_name;
 885
 886         if (!(par->flags & FFB_FLAG_AFB)) {
 887                 if ((par->board_type & 0x7) == 0x3)
 888                         ffb_type_name = "Creator 3D";
 889                 else
 890                         ffb_type_name = "Creator";
 891         } else
 892                 ffb_type_name = "Elite 3D";
 893
 894         strlcpy(info->fix.id, ffb_type_name, sizeof(info->fix.id));
 895
 896         info->fix.type = FB_TYPE_PACKED_PIXELS;
 897         info->fix.visual = FB_VISUAL_TRUECOLOR;
 898
 899         /* Framebuffer length is the same regardless of resolution. */
 900         info->fix.line_length = 8192;
 901
 902         info->fix.accel = FB_ACCEL_SUN_CREATOR;
 903 }
 904
 905 static int __devinit ffb_probe(struct of_device *op, const struct of_device_id *match)
 906 {
 907         struct device_node *dp = op->node;
 908         struct ffb_fbc __iomem *fbc;
 909         struct ffb_dac __iomem *dac;
 910         struct fb_info *info;
 911         struct ffb_par *par;
 912         u32 dac_pnum, dac_rev, dac_mrev;
 913         int err;
 914
 915         info = framebuffer_alloc(sizeof(struct ffb_par), &op->dev);
 916
 917         err = -ENOMEM;
 918         if (!info)
 919                 goto out_err;
 920
 921         par = info->par;
 922
 923         spin_lock_init(&par->lock);
 924         par->fbc = of_ioremap(&op->resource[2], 0,
 925                               sizeof(struct ffb_fbc), "ffb fbc");
 926         if (!par->fbc)
 927                 goto out_release_fb;
 928
 929         par->dac = of_ioremap(&op->resource[1], 0,
 930                               sizeof(struct ffb_dac), "ffb dac");
 931         if (!par->dac)
 932                 goto out_unmap_fbc;
 933
 934         par->rop_cache = FFB_ROP_NEW;
 935         par->physbase = op->resource[0].start;
 936
 937         /* Don't mention copyarea, so SCROLL_REDRAW is always
 938          * used.  It is the fastest on this chip.
 939          */
 940         info->flags = (FBINFO_DEFAULT |
 941                        /* FBINFO_HWACCEL_COPYAREA | */
 942                        FBINFO_HWACCEL_FILLRECT |
 943                        FBINFO_HWACCEL_IMAGEBLIT);
 944
 945         info->fbops = &ffb_ops;
 946
 947         info->screen_base = (char *) par->physbase + FFB_DFB24_POFF;
 948         info->pseudo_palette = par->pseudo_palette;
 949
 950         sbusfb_fill_var(&info->var, dp->node, 32);
 951         par->fbsize = PAGE_ALIGN(info->var.xres * info->var.yres * 4);
 952         ffb_fixup_var_rgb(&info->var);
 953
 954         info->var.accel_flags = FB_ACCELF_TEXT;
 955
 956         if (!strcmp(dp->name, "SUNW,afb"))
 957                 par->flags |= FFB_FLAG_AFB;
 958
 959         par->board_type = of_getintprop_default(dp, "board_type", 0);
 960
 961         fbc = par->fbc;
 962         if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
 963                 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
 964
 965         dac = par->dac;
 966         upa_writel(FFB_DAC_DID, &dac->type);
 967         dac_pnum = upa_readl(&dac->value);
 968         dac_rev = (dac_pnum & FFB_DAC_DID_REV) >> FFB_DAC_DID_REV_SHIFT;
 969         dac_pnum = (dac_pnum & FFB_DAC_DID_PNUM) >> FFB_DAC_DID_PNUM_SHIFT;
 970
 971         upa_writel(FFB_DAC_UCTRL, &dac->type);
 972         dac_mrev = upa_readl(&dac->value);
 973         dac_mrev = (dac_mrev & FFB_DAC_UCTRL_MANREV) >>
 974                 FFB_DAC_UCTRL_MANREV_SHIFT;
 975
 976         /* Elite3D has different DAC revision numbering, and no DAC revisions
 977          * have the reversed meaning of cursor enable.  Otherwise, Pacifica 1
 978          * ramdacs with manufacturing revision less than 3 have inverted
 979          * cursor logic.  We identify Pacifica 1 as not Pacifica 2, the
 980          * latter having a part number value of 0x236e.
 981          */
 982         if ((par->flags & FFB_FLAG_AFB) || dac_pnum == 0x236e) {
 983                 par->flags &= ~FFB_FLAG_INVCURSOR;
 984         } else {
 985                 if (dac_mrev < 3)
 986                         par->flags |= FFB_FLAG_INVCURSOR;
 987         }
 988
 989         ffb_switch_from_graph(par);
 990
 991         /* Unblank it just to be sure.  When there are multiple
 992          * FFB/AFB cards in the system, or it is not the OBP
 993          * chosen console, it will have video outputs off in
 994          * the DAC.
 995          */
 996         ffb_blank(0, info);
 997
 998         if (fb_alloc_cmap(&info->cmap, 256, 0))
 999                 goto out_unmap_dac;
1000
1001         ffb_init_fix(info);
1002
1003         err = register_framebuffer(info);
1004         if (err < 0)
1005                 goto out_dealloc_cmap;
1006
1007         dev_set_drvdata(&op->dev, info);
1008
1009         printk("%s: %s at %016lx, type %d, "
1010                "DAC pnum[%x] rev[%d] manuf_rev[%d]\n",
1011                dp->full_name,
1012                ((par->flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
1013                par->physbase, par->board_type,
1014                dac_pnum, dac_rev, dac_mrev);
1015
1016         return 0;
1017
1018 out_dealloc_cmap:
1019         fb_dealloc_cmap(&info->cmap);
1020
1021 out_unmap_dac:
1022         of_iounmap(&op->resource[2], par->fbc, sizeof(struct ffb_fbc));
1023
1024 out_unmap_fbc:
1025         of_iounmap(&op->resource[2], par->fbc, sizeof(struct ffb_fbc));
1026
1027 out_release_fb:
1028         framebuffer_release(info);
1029
1030 out_err:
1031         return err;
1032 }
1033
1034 static int __devexit ffb_remove(struct of_device *op)
1035 {
1036         struct fb_info *info = dev_get_drvdata(&op->dev);
1037         struct ffb_par *par = info->par;
1038
1039         unregister_framebuffer(info);
1040         fb_dealloc_cmap(&info->cmap);
1041
1042         of_iounmap(&op->resource[2], par->fbc, sizeof(struct ffb_fbc));
1043         of_iounmap(&op->resource[1], par->dac, sizeof(struct ffb_dac));
1044
1045         framebuffer_release(info);
1046
1047         dev_set_drvdata(&op->dev, NULL);
1048
1049         return 0;
1050 }
1051
1052 static struct of_device_id ffb_match[] = {
1053         {
1054                 .name = "SUNW,ffb",
1055         },
1056         {
1057                 .name = "SUNW,afb",
1058         },
1059         {},
1060 };
1061 MODULE_DEVICE_TABLE(of, ffb_match);
1062
1063 static struct of_platform_driver ffb_driver = {
1064         .name           = "ffb",
1065         .match_table    = ffb_match,
1066         .probe          = ffb_probe,
1067         .remove         = __devexit_p(ffb_remove),
1068 };
1069
1070 int __init ffb_init(void)
1071 {
1072         if (fb_get_options("ffb", NULL))
1073                 return -ENODEV;
1074
1075         return of_register_driver(&ffb_driver, &of_bus_type);
1076 }
1077
1078 void __exit ffb_exit(void)
1079 {
1080         of_unregister_driver(&ffb_driver);
1081 }
1082
1083 module_init(ffb_init);
1084 module_exit(ffb_exit);
1085
1086 MODULE_DESCRIPTION("framebuffer driver for Creator/Elite3D chipsets");
1087 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
1088 MODULE_VERSION("2.0");
1089 MODULE_LICENSE("GPL");