drivers/video/console/newport_con.c

   1 /*
   2  * newport_con.c: Abscon for newport hardware
   3  *
   4  * (C) 1998 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
   5  * (C) 1999 Ulf Carlsson (ulfc@thepuffingruop.com)
   6  *
   7  * This driver is based on sgicons.c and cons_newport.
   8  *
   9  * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
  10  * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
  11  */
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/errno.h>
  15 #include <linux/tty.h>
  16 #include <linux/kd.h>
  17 #include <linux/selection.h>
  18 #include <linux/console.h>
  19 #include <linux/vt_kern.h>
  20 #include <linux/mm.h>
  21 #include <linux/module.h>
  22 #include <linux/slab.h>
  23
  24 #include <asm/uaccess.h>
  25 #include <asm/system.h>
  26 #include <asm/page.h>
  27 #include <asm/pgtable.h>
  28 #include <video/newport.h>
  29
  30 #include <linux/linux_logo.h>
  31 #include <linux/font.h>
  32
  33
  34 extern struct font_desc font_vga_8x16;
  35
  36 #define FONT_DATA ((unsigned char *)font_vga_8x16.data)
  37
  38 /* borrowed from fbcon.c */
  39 #define REFCOUNT(fd)    (((int *)(fd))[-1])
  40 #define FNTSIZE(fd)     (((int *)(fd))[-2])
  41 #define FNTCHARCNT(fd)  (((int *)(fd))[-3])
  42 #define FONT_EXTRA_WORDS 3
  43
  44 static unsigned char *font_data[MAX_NR_CONSOLES];
  45
  46 extern struct newport_regs *npregs;
  47
  48 static int logo_active;
  49 static int topscan;
  50 static int xcurs_correction = 29;
  51 static int newport_xsize;
  52 static int newport_ysize;
  53
  54 #define BMASK(c) (c << 24)
  55
  56 #define RENDER(regs, cp) do { \
  57 (regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \
  58 (regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \
  59 (regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \
  60 (regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \
  61 (regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \
  62 (regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \
  63 (regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \
  64 (regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \
  65 } while(0)
  66
  67 #define TESTVAL 0xdeadbeef
  68 #define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11)
  69
  70 static inline void newport_render_background(int xstart, int ystart,
  71                                              int xend, int yend, int ci)
  72 {
  73         newport_wait();
  74         npregs->set.wrmask = 0xffffffff;
  75         npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
  76                                  NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX
  77                                  | NPORT_DMODE0_STOPY);
  78         npregs->set.colori = ci;
  79         npregs->set.xystarti =
  80             (xstart << 16) | ((ystart + topscan) & 0x3ff);
  81         npregs->go.xyendi =
  82             ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff);
  83 }
  84
  85 static inline void newport_init_cmap(void)
  86 {
  87         unsigned short i;
  88
  89         for (i = 0; i < 16; i++) {
  90                 newport_bfwait();
  91                 newport_cmap_setaddr(npregs, color_table[i]);
  92                 newport_cmap_setrgb(npregs,
  93                                     default_red[i],
  94                                     default_grn[i], default_blu[i]);
  95         }
  96 }
  97
  98 #ifdef CONFIG_LOGO_SGI_CLUT224
  99 static void newport_show_logo(void);
 100 #else
 101 #define newport_show_logo()     do { } while (0)
 102 #endif
 103
 104 static inline void newport_clear_screen(int xstart, int ystart, int xend,
 105                                         int yend, int ci)
 106 {
 107         if (logo_active)
 108                 return;
 109
 110         newport_wait();
 111         npregs->set.wrmask = 0xffffffff;
 112         npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
 113                                  NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX
 114                                  | NPORT_DMODE0_STOPY);
 115         npregs->set.colori = ci;
 116         npregs->set.xystarti = (xstart << 16) | ystart;
 117         npregs->go.xyendi = (xend << 16) | yend;
 118 }
 119
 120 static inline void newport_clear_lines(int ystart, int yend, int ci)
 121 {
 122         ystart = ((ystart << 4) + topscan) & 0x3ff;
 123         yend = ((yend << 4) + topscan + 15) & 0x3ff;
 124         newport_clear_screen(0, ystart, 1280 + 63, yend, ci);
 125 }
 126
 127 void newport_reset(void)
 128 {
 129         unsigned short treg;
 130         int i;
 131
 132         newport_wait();
 133         treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
 134         newport_vc2_set(npregs, VC2_IREG_CONTROL,
 135                         (treg | VC2_CTRL_EVIDEO));
 136
 137         treg = newport_vc2_get(npregs, VC2_IREG_CENTRY);
 138         newport_vc2_set(npregs, VC2_IREG_RADDR, treg);
 139         npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
 140                                NPORT_DMODE_W2 | VC2_PROTOCOL);
 141         for (i = 0; i < 128; i++) {
 142                 newport_bfwait();
 143                 if (i == 92 || i == 94)
 144                         npregs->set.dcbdata0.byshort.s1 = 0xff00;
 145                 else
 146                         npregs->set.dcbdata0.byshort.s1 = 0x0000;
 147         }
 148
 149         newport_init_cmap();
 150
 151         /* turn off popup plane */
 152         npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL |
 153                                XM9_CRS_CONFIG | NPORT_DMODE_W1);
 154         npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE;
 155         npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL |
 156                                XM9_CRS_CONFIG | NPORT_DMODE_W1);
 157         npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE;
 158
 159         topscan = 0;
 160         npregs->cset.topscan = 0x3ff;
 161         npregs->cset.xywin = (4096 << 16) | 4096;
 162
 163         /* Clear the screen. */
 164         newport_clear_screen(0, 0, 1280 + 63, 1024, 0);
 165 }
 166
 167 /*
 168  * calculate the actual screen size by reading
 169  * the video timing out of the VC2
 170  */
 171 void newport_get_screensize(void)
 172 {
 173         int i, cols;
 174         unsigned short ventry, treg;
 175         unsigned short linetable[128];  /* should be enough */
 176
 177         ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY);
 178         newport_vc2_set(npregs, VC2_IREG_RADDR, ventry);
 179         npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
 180                                NPORT_DMODE_W2 | VC2_PROTOCOL);
 181         for (i = 0; i < 128; i++) {
 182                 newport_bfwait();
 183                 linetable[i] = npregs->set.dcbdata0.byshort.s1;
 184         }
 185
 186         newport_xsize = newport_ysize = 0;
 187         for (i = 0; linetable[i + 1] && (i < sizeof(linetable)); i += 2) {
 188                 cols = 0;
 189                 newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]);
 190                 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
 191                                        NPORT_DMODE_W2 | VC2_PROTOCOL);
 192                 do {
 193                         newport_bfwait();
 194                         treg = npregs->set.dcbdata0.byshort.s1;
 195                         if ((treg & 1) == 0)
 196                                 cols += (treg >> 7) & 0xfe;
 197                         if ((treg & 0x80) == 0) {
 198                                 newport_bfwait();
 199                                 treg = npregs->set.dcbdata0.byshort.s1;
 200                         }
 201                 } while ((treg & 0x8000) == 0);
 202                 if (cols) {
 203                         if (cols > newport_xsize)
 204                                 newport_xsize = cols;
 205                         newport_ysize += linetable[i + 1];
 206                 }
 207         }
 208         printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize);
 209 }
 210
 211 static void newport_get_revisions(void)
 212 {
 213         unsigned int tmp;
 214         unsigned int board_rev;
 215         unsigned int rex3_rev;
 216         unsigned int vc2_rev;
 217         unsigned int cmap_rev;
 218         unsigned int xmap9_rev;
 219         unsigned int bt445_rev;
 220         unsigned int bitplanes;
 221
 222         rex3_rev = npregs->cset.status & NPORT_STAT_VERS;
 223
 224         npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL |
 225                                NCMAP_REGADDR_RREG | NPORT_DMODE_W1);
 226         tmp = npregs->set.dcbdata0.bybytes.b3;
 227         cmap_rev = tmp & 7;
 228         board_rev = (tmp >> 4) & 7;
 229         bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24;
 230
 231         npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL |
 232                                NCMAP_REGADDR_RREG | NPORT_DMODE_W1);
 233         tmp = npregs->set.dcbdata0.bybytes.b3;
 234         if ((tmp & 7) < cmap_rev)
 235                 cmap_rev = (tmp & 7);
 236
 237         vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7;
 238
 239         npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL |
 240                                XM9_CRS_REVISION | NPORT_DMODE_W1);
 241         xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7;
 242
 243         npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL |
 244                                BT445_CSR_ADDR_REG | NPORT_DMODE_W1);
 245         npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG;
 246         npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL |
 247                                BT445_CSR_REVISION | NPORT_DMODE_W1);
 248         bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a;
 249
 250 #define L(a)     (char)('A'+(a))
 251         printk
 252             ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n",
 253              board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev),
 254              L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev));
 255 #undef L
 256
 257         if (board_rev == 3)     /* I don't know all affected revisions */
 258                 xcurs_correction = 21;
 259 }
 260
 261 #ifdef MODULE
 262 static const char *newport_startup(void)
 263 #else
 264 static const char *__init newport_startup(void)
 265 #endif
 266 {
 267         int i;
 268         struct newport_regs *p;
 269
 270         npregs = (struct newport_regs *) (KSEG1 + 0x1f0f0000);
 271
 272         p = npregs;
 273         p->cset.config = NPORT_CFG_GD0;
 274
 275         if (newport_wait()) {
 276                 return NULL;
 277         }
 278
 279         p->set.xstarti = TESTVAL;
 280         if (p->set._xstart.word != XSTI_TO_FXSTART(TESTVAL))
 281                 return NULL;
 282
 283         for (i = 0; i < MAX_NR_CONSOLES; i++)
 284                 font_data[i] = FONT_DATA;
 285
 286         newport_reset();
 287         newport_get_revisions();
 288         newport_get_screensize();
 289
 290         /* gfx_init (display_desc); */
 291
 292         return "SGI Newport";
 293 }
 294
 295 static void newport_init(struct vc_data *vc, int init)
 296 {
 297         vc->vc_cols = newport_xsize / 8;
 298         vc->vc_rows = newport_ysize / 16;
 299         vc->vc_can_do_color = 1;
 300 }
 301
 302 static void newport_clear(struct vc_data *vc, int sy, int sx, int height,
 303                           int width)
 304 {
 305         int xend = ((sx + width) << 3) - 1;
 306         int ystart = ((sy << 4) + topscan) & 0x3ff;
 307         int yend = (((sy + height) << 4) + topscan - 1) & 0x3ff;
 308
 309         if (logo_active)
 310                 return;
 311
 312         if (ystart < yend) {
 313                 newport_clear_screen(sx << 3, ystart, xend, yend,
 314                                      (vc->vc_color & 0xf0) >> 4);
 315         } else {
 316                 newport_clear_screen(sx << 3, ystart, xend, 1023,
 317                                      (vc->vc_color & 0xf0) >> 4);
 318                 newport_clear_screen(sx << 3, 0, xend, yend,
 319                                      (vc->vc_color & 0xf0) >> 4);
 320         }
 321 }
 322
 323 static void newport_putc(struct vc_data *vc, int charattr, int ypos,
 324                          int xpos)
 325 {
 326         unsigned char *p;
 327
 328         p = &font_data[vc->vc_num][(charattr & 0xff) << 4];
 329         charattr = (charattr >> 8) & 0xff;
 330         xpos <<= 3;
 331         ypos <<= 4;
 332
 333         newport_render_background(xpos, ypos, xpos, ypos,
 334                                   (charattr & 0xf0) >> 4);
 335
 336         /* Set the color and drawing mode. */
 337         newport_wait();
 338         npregs->set.colori = charattr & 0xf;
 339         npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
 340                                  NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
 341                                  NPORT_DMODE0_L32);
 342
 343         /* Set coordinates for bitmap operation. */
 344         npregs->set.xystarti = (xpos << 16) | ((ypos + topscan) & 0x3ff);
 345         npregs->set.xyendi = ((xpos + 7) << 16);
 346         newport_wait();
 347
 348         /* Go, baby, go... */
 349         RENDER(npregs, p);
 350 }
 351
 352 static void newport_putcs(struct vc_data *vc, const unsigned short *s,
 353                           int count, int ypos, int xpos)
 354 {
 355         int i;
 356         int charattr;
 357         unsigned char *p;
 358
 359         charattr = (scr_readw(s) >> 8) & 0xff;
 360
 361         xpos <<= 3;
 362         ypos <<= 4;
 363
 364         if (!logo_active)
 365                 /* Clear the area behing the string */
 366                 newport_render_background(xpos, ypos,
 367                                           xpos + ((count - 1) << 3), ypos,
 368                                           (charattr & 0xf0) >> 4);
 369
 370         newport_wait();
 371
 372         /* Set the color and drawing mode. */
 373         npregs->set.colori = charattr & 0xf;
 374         npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
 375                                  NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
 376                                  NPORT_DMODE0_L32);
 377
 378         for (i = 0; i < count; i++, xpos += 8) {
 379                 p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4];
 380
 381                 newport_wait();
 382
 383                 /* Set coordinates for bitmap operation. */
 384                 npregs->set.xystarti =
 385                     (xpos << 16) | ((ypos + topscan) & 0x3ff);
 386                 npregs->set.xyendi = ((xpos + 7) << 16);
 387
 388                 /* Go, baby, go... */
 389                 RENDER(npregs, p);
 390         }
 391 }
 392
 393 static void newport_cursor(struct vc_data *vc, int mode)
 394 {
 395         unsigned short treg;
 396         int xcurs, ycurs;
 397
 398         switch (mode) {
 399         case CM_ERASE:
 400                 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
 401                 newport_vc2_set(npregs, VC2_IREG_CONTROL,
 402                                 (treg & ~(VC2_CTRL_ECDISP)));
 403                 break;
 404
 405         case CM_MOVE:
 406         case CM_DRAW:
 407                 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
 408                 newport_vc2_set(npregs, VC2_IREG_CONTROL,
 409                                 (treg | VC2_CTRL_ECDISP));
 410                 xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2;
 411                 ycurs = ((xcurs / vc->vc_cols) << 4) + 31;
 412                 xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction;
 413                 newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs);
 414                 newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs);
 415         }
 416 }
 417
 418 static int newport_switch(struct vc_data *vc)
 419 {
 420         static int logo_drawn = 0;
 421
 422         topscan = 0;
 423         npregs->cset.topscan = 0x3ff;
 424
 425         if (!logo_drawn) {
 426                 newport_show_logo();
 427                 logo_drawn = 1;
 428                 logo_active = 1;
 429         }
 430
 431         return 1;
 432 }
 433
 434 static int newport_blank(struct vc_data *c, int blank)
 435 {
 436         unsigned short treg;
 437
 438         if (blank == 0) {
 439                 /* unblank console */
 440                 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
 441                 newport_vc2_set(npregs, VC2_IREG_CONTROL,
 442                                 (treg | VC2_CTRL_EDISP));
 443         } else {
 444                 /* blank console */
 445                 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
 446                 newport_vc2_set(npregs, VC2_IREG_CONTROL,
 447                                 (treg & ~(VC2_CTRL_EDISP)));
 448         }
 449         return 1;
 450 }
 451
 452 static int newport_set_font(int unit, struct console_font_op *op)
 453 {
 454         int w = op->width;
 455         int h = op->height;
 456         int size = h * op->charcount;
 457         int i;
 458         unsigned char *new_data, *data = op->data, *p;
 459
 460         /* ladis: when I grow up, there will be a day... and more sizes will
 461          * be supported ;-) */
 462         if ((w != 8) || (h != 16)
 463             || (op->charcount != 256 && op->charcount != 512))
 464                 return -EINVAL;
 465
 466         if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size,
 467              GFP_USER))) return -ENOMEM;
 468
 469         new_data += FONT_EXTRA_WORDS * sizeof(int);
 470         FNTSIZE(new_data) = size;
 471         FNTCHARCNT(new_data) = op->charcount;
 472         REFCOUNT(new_data) = 0; /* usage counter */
 473
 474         p = new_data;
 475         for (i = 0; i < op->charcount; i++) {
 476                 memcpy(p, data, h);
 477                 data += 32;
 478                 p += h;
 479         }
 480
 481         /* check if font is already used by other console */
 482         for (i = 0; i < MAX_NR_CONSOLES; i++) {
 483                 if (font_data[i] != FONT_DATA
 484                     && FNTSIZE(font_data[i]) == size
 485                     && !memcmp(font_data[i], new_data, size)) {
 486                         kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
 487                         /* current font is the same as the new one */
 488                         if (i == unit)
 489                                 return 0;
 490                         new_data = font_data[i];
 491                         break;
 492                 }
 493         }
 494         /* old font is user font */
 495         if (font_data[unit] != FONT_DATA) {
 496                 if (--REFCOUNT(font_data[unit]) == 0)
 497                         kfree(font_data[unit] -
 498                               FONT_EXTRA_WORDS * sizeof(int));
 499         }
 500         REFCOUNT(new_data)++;
 501         font_data[unit] = new_data;
 502
 503         return 0;
 504 }
 505
 506 static int newport_set_def_font(int unit, struct console_font_op *op)
 507 {
 508         if (font_data[unit] != FONT_DATA) {
 509                 if (--REFCOUNT(font_data[unit]) == 0)
 510                         kfree(font_data[unit] -
 511                               FONT_EXTRA_WORDS * sizeof(int));
 512                 font_data[unit] = FONT_DATA;
 513         }
 514
 515         return 0;
 516 }
 517
 518 static int newport_font_op(struct vc_data *vc, struct console_font_op *op)
 519 {
 520         int unit = vc->vc_num;
 521
 522         switch (op->op) {
 523         case KD_FONT_OP_SET:
 524                 return newport_set_font(unit, op);
 525         case KD_FONT_OP_SET_DEFAULT:
 526                 return newport_set_def_font(unit, op);
 527         default:
 528                 return -ENOSYS;
 529         }
 530 }
 531
 532 static int newport_set_palette(struct vc_data *vc, unsigned char *table)
 533 {
 534         return -EINVAL;
 535 }
 536
 537 static int newport_scrolldelta(struct vc_data *vc, int lines)
 538 {
 539         /* there is (nearly) no off-screen memory, so we can't scroll back */
 540         return 0;
 541 }
 542
 543 static int newport_scroll(struct vc_data *vc, int t, int b, int dir,
 544                           int lines)
 545 {
 546         int count, x, y;
 547         unsigned short *s, *d;
 548         unsigned short chattr;
 549
 550         logo_active = 0;        /* it's time to disable the logo now.. */
 551
 552         if (t == 0 && b == vc->vc_rows) {
 553                 if (dir == SM_UP) {
 554                         topscan = (topscan + (lines << 4)) & 0x3ff;
 555                         newport_clear_lines(vc->vc_rows - lines,
 556                                             vc->vc_rows - 1,
 557                                             (vc->vc_color & 0xf0) >> 4);
 558                 } else {
 559                         topscan = (topscan + (-lines << 4)) & 0x3ff;
 560                         newport_clear_lines(0, lines - 1,
 561                                             (vc->vc_color & 0xf0) >> 4);
 562                 }
 563                 npregs->cset.topscan = (topscan - 1) & 0x3ff;
 564                 return 0;
 565         }
 566
 567         count = (b - t - lines) * vc->vc_cols;
 568         if (dir == SM_UP) {
 569                 x = 0;
 570                 y = t;
 571                 s = (unsigned short *) (vc->vc_origin +
 572                                         vc->vc_size_row * (t + lines));
 573                 d = (unsigned short *) (vc->vc_origin +
 574                                         vc->vc_size_row * t);
 575                 while (count--) {
 576                         chattr = scr_readw(s++);
 577                         if (chattr != scr_readw(d)) {
 578                                 newport_putc(vc, chattr, y, x);
 579                                 scr_writew(chattr, d);
 580                         }
 581                         d++;
 582                         if (++x == vc->vc_cols) {
 583                                 x = 0;
 584                                 y++;
 585                         }
 586                 }
 587                 d = (unsigned short *) (vc->vc_origin +
 588                                         vc->vc_size_row * (b - lines));
 589                 x = 0;
 590                 y = b - lines;
 591                 for (count = 0; count < (lines * vc->vc_cols); count++) {
 592                         if (scr_readw(d) != vc->vc_video_erase_char) {
 593                                 newport_putc(vc, vc->vc_video_erase_char,
 594                                              y, x);
 595                                 scr_writew(vc->vc_video_erase_char, d);
 596                         }
 597                         d++;
 598                         if (++x == vc->vc_cols) {
 599                                 x = 0;
 600                                 y++;
 601                         }
 602                 }
 603         } else {
 604                 x = vc->vc_cols - 1;
 605                 y = b - 1;
 606                 s = (unsigned short *) (vc->vc_origin +
 607                                         vc->vc_size_row * (b - lines) - 2);
 608                 d = (unsigned short *) (vc->vc_origin +
 609                                         vc->vc_size_row * b - 2);
 610                 while (count--) {
 611                         chattr = scr_readw(s--);
 612                         if (chattr != scr_readw(d)) {
 613                                 newport_putc(vc, chattr, y, x);
 614                                 scr_writew(chattr, d);
 615                         }
 616                         d--;
 617                         if (x-- == 0) {
 618                                 x = vc->vc_cols - 1;
 619                                 y--;
 620                         }
 621                 }
 622                 d = (unsigned short *) (vc->vc_origin +
 623                                         vc->vc_size_row * t);
 624                 x = 0;
 625                 y = t;
 626                 for (count = 0; count < (lines * vc->vc_cols); count++) {
 627                         if (scr_readw(d) != vc->vc_video_erase_char) {
 628                                 newport_putc(vc, vc->vc_video_erase_char,
 629                                              y, x);
 630                                 scr_writew(vc->vc_video_erase_char, d);
 631                         }
 632                         d++;
 633                         if (++x == vc->vc_cols) {
 634                                 x = 0;
 635                                 y++;
 636                         }
 637                 }
 638         }
 639         return 1;
 640 }
 641
 642 static void newport_bmove(struct vc_data *vc, int sy, int sx, int dy,
 643                           int dx, int h, int w)
 644 {
 645         short xs, ys, xe, ye, xoffs, yoffs, tmp;
 646
 647         xs = sx << 3;
 648         xe = ((sx + w) << 3) - 1;
 649         /*
 650          * as bmove is only used to move stuff around in the same line
 651          * (h == 1), we don't care about wrap arounds caused by topscan != 0
 652          */
 653         ys = ((sy << 4) + topscan) & 0x3ff;
 654         ye = (((sy + h) << 4) - 1 + topscan) & 0x3ff;
 655         xoffs = (dx - sx) << 3;
 656         yoffs = (dy - sy) << 4;
 657         if (xoffs > 0) {
 658                 /* move to the right, exchange starting points */
 659                 tmp = xe;
 660                 xe = xs;
 661                 xs = tmp;
 662         }
 663         newport_wait();
 664         npregs->set.drawmode0 = (NPORT_DMODE0_S2S | NPORT_DMODE0_BLOCK |
 665                                  NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX
 666                                  | NPORT_DMODE0_STOPY);
 667         npregs->set.xystarti = (xs << 16) | ys;
 668         npregs->set.xyendi = (xe << 16) | ye;
 669         npregs->go.xymove = (xoffs << 16) | yoffs;
 670 }
 671
 672 static int newport_dummy(struct vc_data *c)
 673 {
 674         return 0;
 675 }
 676
 677 #define DUMMY (void *) newport_dummy
 678
 679 const struct consw newport_con = {
 680     .con_startup =      newport_startup,
 681     .con_init =         newport_init,
 682     .con_deinit =       DUMMY,
 683     .con_clear =        newport_clear,
 684     .con_putc =         newport_putc,
 685     .con_putcs =        newport_putcs,
 686     .con_cursor =       newport_cursor,
 687     .con_scroll =       newport_scroll,
 688     .con_bmove =        newport_bmove,
 689     .con_switch =       newport_switch,
 690     .con_blank =        newport_blank,
 691     .con_font_op =      newport_font_op,
 692     .con_set_palette =  newport_set_palette,
 693     .con_scrolldelta =  newport_scrolldelta,
 694     .con_set_origin =   DUMMY,
 695     .con_save_screen =  DUMMY
 696 };
 697
 698 #ifdef MODULE
 699 MODULE_LICENSE("GPL");
 700
 701 int init_module(void)
 702 {
 703         if (!newport_startup())
 704                 printk("Error loading SGI Newport Console driver\n");
 705         else
 706                 printk("Loading SGI Newport Console Driver\n");
 707         take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1);
 708
 709         return 0;
 710 }
 711
 712 int cleanup_module(void)
 713 {
 714         int i;
 715
 716         printk("Unloading SGI Newport Console Driver\n");
 717         /* free memory used by user font */
 718         for (i = 0; i < MAX_NR_CONSOLES; i++)
 719                 newport_set_def_font(i, NULL);
 720
 721         return 0;
 722 }
 723 #endif
 724
 725
 726 #ifdef CONFIG_LOGO_SGI_CLUT224
 727
 728 #undef __initdata
 729 #define __initdata
 730 #include "../logo/logo_sgi_clut224.c"
 731
 732 static void newport_show_logo(void)
 733 {
 734         const struct linux_logo *logo = &logo_sgi_clut224;
 735         const unsigned char *clut = logo->clut;
 736         const unsigned char *data = logo->data;
 737         unsigned long i;
 738
 739         for (i = 0; i < logo->clutsize; i++) {
 740                 newport_bfwait();
 741                 newport_cmap_setaddr(npregs, i + 0x20);
 742                 newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]);
 743                 clut += 3;
 744         }
 745
 746         newport_wait();
 747         npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
 748                                  NPORT_DMODE0_CHOST);
 749
 750         npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0);
 751         npregs->set.xyendi = ((newport_xsize - 1) << 16);
 752         newport_wait();
 753
 754         for (i = 0; i < logo->width*logo->height; i++)
 755                 npregs->go.hostrw0 = *data++ << 24;
 756 }
 757 #endif /* CONFIG_LOGO_SGI_CLUT224 */
 758