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/kd.h> 16 #include <linux/selection.h> 17 #include <linux/console.h> 18 #include <linux/vt_kern.h> 19 #include <linux/mm.h> 20 #include <linux/module.h> 21 #include <linux/slab.h> 22 23 #include <asm/io.h> 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 unsigned long sgi_gfxaddr; 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 static 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 static int newport_has_init; 54 55 static int newport_set_def_font(int unit, struct console_font *op); 56 57 #define BMASK(c) (c << 24) 58 59 #define RENDER(regs, cp) do { \ 60 (regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \ 61 (regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \ 62 (regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \ 63 (regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \ 64 (regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \ 65 (regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \ 66 (regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \ 67 (regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \ 68 } while(0) 69 70 #define TESTVAL 0xdeadbeef 71 #define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11) 72 73 static inline void newport_render_background(int xstart, int ystart, 74 int xend, int yend, int ci) 75 { 76 newport_wait(npregs); 77 npregs->set.wrmask = 0xffffffff; 78 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 79 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 80 | NPORT_DMODE0_STOPY); 81 npregs->set.colori = ci; 82 npregs->set.xystarti = 83 (xstart << 16) | ((ystart + topscan) & 0x3ff); 84 npregs->go.xyendi = 85 ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff); 86 } 87 88 static inline void newport_init_cmap(void) 89 { 90 unsigned short i; 91 92 for (i = 0; i < 16; i++) { 93 newport_bfwait(npregs); 94 newport_cmap_setaddr(npregs, color_table[i]); 95 newport_cmap_setrgb(npregs, 96 default_red[i], 97 default_grn[i], default_blu[i]); 98 } 99 } 100 101 static void newport_show_logo(void) 102 { 103 #ifdef CONFIG_LOGO_SGI_CLUT224 104 const struct linux_logo *logo = fb_find_logo(8); 105 const unsigned char *clut = logo->clut; 106 const unsigned char *data = logo->data; 107 unsigned long i; 108 109 for (i = 0; i < logo->clutsize; i++) { 110 newport_bfwait(npregs); 111 newport_cmap_setaddr(npregs, i + 0x20); 112 newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]); 113 clut += 3; 114 } 115 116 newport_wait(npregs); 117 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 118 NPORT_DMODE0_CHOST); 119 120 npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0); 121 npregs->set.xyendi = ((newport_xsize - 1) << 16); 122 newport_wait(npregs); 123 124 for (i = 0; i < logo->width*logo->height; i++) 125 npregs->go.hostrw0 = *data++ << 24; 126 #endif /* CONFIG_LOGO_SGI_CLUT224 */ 127 } 128 129 static inline void newport_clear_screen(int xstart, int ystart, int xend, 130 int yend, int ci) 131 { 132 if (logo_active) 133 return; 134 135 newport_wait(npregs); 136 npregs->set.wrmask = 0xffffffff; 137 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 138 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 139 | NPORT_DMODE0_STOPY); 140 npregs->set.colori = ci; 141 npregs->set.xystarti = (xstart << 16) | ystart; 142 npregs->go.xyendi = (xend << 16) | yend; 143 } 144 145 static inline void newport_clear_lines(int ystart, int yend, int ci) 146 { 147 ystart = ((ystart << 4) + topscan) & 0x3ff; 148 yend = ((yend << 4) + topscan + 15) & 0x3ff; 149 newport_clear_screen(0, ystart, 1280 + 63, yend, ci); 150 } 151 152 static void newport_reset(void) 153 { 154 unsigned short treg; 155 int i; 156 157 newport_wait(npregs); 158 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 159 newport_vc2_set(npregs, VC2_IREG_CONTROL, 160 (treg | VC2_CTRL_EVIDEO)); 161 162 treg = newport_vc2_get(npregs, VC2_IREG_CENTRY); 163 newport_vc2_set(npregs, VC2_IREG_RADDR, treg); 164 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 165 NPORT_DMODE_W2 | VC2_PROTOCOL); 166 for (i = 0; i < 128; i++) { 167 newport_bfwait(npregs); 168 if (i == 92 || i == 94) 169 npregs->set.dcbdata0.byshort.s1 = 0xff00; 170 else 171 npregs->set.dcbdata0.byshort.s1 = 0x0000; 172 } 173 174 newport_init_cmap(); 175 176 /* turn off popup plane */ 177 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 178 XM9_CRS_CONFIG | NPORT_DMODE_W1); 179 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 180 npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL | 181 XM9_CRS_CONFIG | NPORT_DMODE_W1); 182 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 183 184 topscan = 0; 185 npregs->cset.topscan = 0x3ff; 186 npregs->cset.xywin = (4096 << 16) | 4096; 187 188 /* Clear the screen. */ 189 newport_clear_screen(0, 0, 1280 + 63, 1024, 0); 190 } 191 192 /* 193 * calculate the actual screen size by reading 194 * the video timing out of the VC2 195 */ 196 static void newport_get_screensize(void) 197 { 198 int i, cols; 199 unsigned short ventry, treg; 200 unsigned short linetable[128]; /* should be enough */ 201 202 ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY); 203 newport_vc2_set(npregs, VC2_IREG_RADDR, ventry); 204 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 205 NPORT_DMODE_W2 | VC2_PROTOCOL); 206 for (i = 0; i < 128; i++) { 207 newport_bfwait(npregs); 208 linetable[i] = npregs->set.dcbdata0.byshort.s1; 209 } 210 211 newport_xsize = newport_ysize = 0; 212 for (i = 0; linetable[i + 1] && (i < sizeof(linetable)); i += 2) { 213 cols = 0; 214 newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]); 215 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 216 NPORT_DMODE_W2 | VC2_PROTOCOL); 217 do { 218 newport_bfwait(npregs); 219 treg = npregs->set.dcbdata0.byshort.s1; 220 if ((treg & 1) == 0) 221 cols += (treg >> 7) & 0xfe; 222 if ((treg & 0x80) == 0) { 223 newport_bfwait(npregs); 224 treg = npregs->set.dcbdata0.byshort.s1; 225 } 226 } while ((treg & 0x8000) == 0); 227 if (cols) { 228 if (cols > newport_xsize) 229 newport_xsize = cols; 230 newport_ysize += linetable[i + 1]; 231 } 232 } 233 printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize); 234 } 235 236 static void newport_get_revisions(void) 237 { 238 unsigned int tmp; 239 unsigned int board_rev; 240 unsigned int rex3_rev; 241 unsigned int vc2_rev; 242 unsigned int cmap_rev; 243 unsigned int xmap9_rev; 244 unsigned int bt445_rev; 245 unsigned int bitplanes; 246 247 rex3_rev = npregs->cset.status & NPORT_STAT_VERS; 248 249 npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL | 250 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 251 tmp = npregs->set.dcbdata0.bybytes.b3; 252 cmap_rev = tmp & 7; 253 board_rev = (tmp >> 4) & 7; 254 bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24; 255 256 npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL | 257 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 258 tmp = npregs->set.dcbdata0.bybytes.b3; 259 if ((tmp & 7) < cmap_rev) 260 cmap_rev = (tmp & 7); 261 262 vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7; 263 264 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 265 XM9_CRS_REVISION | NPORT_DMODE_W1); 266 xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7; 267 268 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 269 BT445_CSR_ADDR_REG | NPORT_DMODE_W1); 270 npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG; 271 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 272 BT445_CSR_REVISION | NPORT_DMODE_W1); 273 bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a; 274 275 #define L(a) (char)('A'+(a)) 276 printk 277 ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n", 278 board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev), 279 L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev)); 280 #undef L 281 282 if (board_rev == 3) /* I don't know all affected revisions */ 283 xcurs_correction = 21; 284 } 285 286 static void newport_exit(void) 287 { 288 int i; 289 290 /* free memory used by user font */ 291 for (i = 0; i < MAX_NR_CONSOLES; i++) 292 newport_set_def_font(i, NULL); 293 } 294 295 /* Can't be __init, take_over_console may call it later */ 296 static const char *newport_startup(void) 297 { 298 int i; 299 300 if (!sgi_gfxaddr) 301 return NULL; 302 303 if (!npregs) 304 npregs = (struct newport_regs *)/* ioremap cannot fail */ 305 ioremap(sgi_gfxaddr, sizeof(struct newport_regs)); 306 npregs->cset.config = NPORT_CFG_GD0; 307 308 if (newport_wait(npregs)) 309 goto out_unmap; 310 311 npregs->set.xstarti = TESTVAL; 312 if (npregs->set._xstart.word != XSTI_TO_FXSTART(TESTVAL)) 313 goto out_unmap; 314 315 for (i = 0; i < MAX_NR_CONSOLES; i++) 316 font_data[i] = FONT_DATA; 317 318 newport_reset(); 319 newport_get_revisions(); 320 newport_get_screensize(); 321 newport_has_init = 1; 322 323 return "SGI Newport"; 324 325 out_unmap: 326 return NULL; 327 } 328 329 static void newport_init(struct vc_data *vc, int init) 330 { 331 vc->vc_cols = newport_xsize / 8; 332 vc->vc_rows = newport_ysize / 16; 333 vc->vc_can_do_color = 1; 334 } 335 336 static void newport_deinit(struct vc_data *c) 337 { 338 if (!con_is_bound(&newport_con) && newport_has_init) { 339 newport_exit(); 340 newport_has_init = 0; 341 } 342 } 343 344 static void newport_clear(struct vc_data *vc, int sy, int sx, int height, 345 int width) 346 { 347 int xend = ((sx + width) << 3) - 1; 348 int ystart = ((sy << 4) + topscan) & 0x3ff; 349 int yend = (((sy + height) << 4) + topscan - 1) & 0x3ff; 350 351 if (logo_active) 352 return; 353 354 if (ystart < yend) { 355 newport_clear_screen(sx << 3, ystart, xend, yend, 356 (vc->vc_color & 0xf0) >> 4); 357 } else { 358 newport_clear_screen(sx << 3, ystart, xend, 1023, 359 (vc->vc_color & 0xf0) >> 4); 360 newport_clear_screen(sx << 3, 0, xend, yend, 361 (vc->vc_color & 0xf0) >> 4); 362 } 363 } 364 365 static void newport_putc(struct vc_data *vc, int charattr, int ypos, 366 int xpos) 367 { 368 unsigned char *p; 369 370 p = &font_data[vc->vc_num][(charattr & 0xff) << 4]; 371 charattr = (charattr >> 8) & 0xff; 372 xpos <<= 3; 373 ypos <<= 4; 374 375 newport_render_background(xpos, ypos, xpos, ypos, 376 (charattr & 0xf0) >> 4); 377 378 /* Set the color and drawing mode. */ 379 newport_wait(npregs); 380 npregs->set.colori = charattr & 0xf; 381 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 382 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 383 NPORT_DMODE0_L32); 384 385 /* Set coordinates for bitmap operation. */ 386 npregs->set.xystarti = (xpos << 16) | ((ypos + topscan) & 0x3ff); 387 npregs->set.xyendi = ((xpos + 7) << 16); 388 newport_wait(npregs); 389 390 /* Go, baby, go... */ 391 RENDER(npregs, p); 392 } 393 394 static void newport_putcs(struct vc_data *vc, const unsigned short *s, 395 int count, int ypos, int xpos) 396 { 397 int i; 398 int charattr; 399 unsigned char *p; 400 401 charattr = (scr_readw(s) >> 8) & 0xff; 402 403 xpos <<= 3; 404 ypos <<= 4; 405 406 if (!logo_active) 407 /* Clear the area behing the string */ 408 newport_render_background(xpos, ypos, 409 xpos + ((count - 1) << 3), ypos, 410 (charattr & 0xf0) >> 4); 411 412 newport_wait(npregs); 413 414 /* Set the color and drawing mode. */ 415 npregs->set.colori = charattr & 0xf; 416 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 417 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 418 NPORT_DMODE0_L32); 419 420 for (i = 0; i < count; i++, xpos += 8) { 421 p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4]; 422 423 newport_wait(npregs); 424 425 /* Set coordinates for bitmap operation. */ 426 npregs->set.xystarti = 427 (xpos << 16) | ((ypos + topscan) & 0x3ff); 428 npregs->set.xyendi = ((xpos + 7) << 16); 429 430 /* Go, baby, go... */ 431 RENDER(npregs, p); 432 } 433 } 434 435 static void newport_cursor(struct vc_data *vc, int mode) 436 { 437 unsigned short treg; 438 int xcurs, ycurs; 439 440 switch (mode) { 441 case CM_ERASE: 442 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 443 newport_vc2_set(npregs, VC2_IREG_CONTROL, 444 (treg & ~(VC2_CTRL_ECDISP))); 445 break; 446 447 case CM_MOVE: 448 case CM_DRAW: 449 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 450 newport_vc2_set(npregs, VC2_IREG_CONTROL, 451 (treg | VC2_CTRL_ECDISP)); 452 xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2; 453 ycurs = ((xcurs / vc->vc_cols) << 4) + 31; 454 xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction; 455 newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs); 456 newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs); 457 } 458 } 459 460 static int newport_switch(struct vc_data *vc) 461 { 462 static int logo_drawn = 0; 463 464 topscan = 0; 465 npregs->cset.topscan = 0x3ff; 466 467 if (!logo_drawn) { 468 newport_show_logo(); 469 logo_drawn = 1; 470 logo_active = 1; 471 } 472 473 return 1; 474 } 475 476 static int newport_blank(struct vc_data *c, int blank, int mode_switch) 477 { 478 unsigned short treg; 479 480 if (blank == 0) { 481 /* unblank console */ 482 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 483 newport_vc2_set(npregs, VC2_IREG_CONTROL, 484 (treg | VC2_CTRL_EDISP)); 485 } else { 486 /* blank console */ 487 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 488 newport_vc2_set(npregs, VC2_IREG_CONTROL, 489 (treg & ~(VC2_CTRL_EDISP))); 490 } 491 return 1; 492 } 493 494 static int newport_set_font(int unit, struct console_font *op) 495 { 496 int w = op->width; 497 int h = op->height; 498 int size = h * op->charcount; 499 int i; 500 unsigned char *new_data, *data = op->data, *p; 501 502 /* ladis: when I grow up, there will be a day... and more sizes will 503 * be supported ;-) */ 504 if ((w != 8) || (h != 16) 505 || (op->charcount != 256 && op->charcount != 512)) 506 return -EINVAL; 507 508 if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, 509 GFP_USER))) return -ENOMEM; 510 511 new_data += FONT_EXTRA_WORDS * sizeof(int); 512 FNTSIZE(new_data) = size; 513 FNTCHARCNT(new_data) = op->charcount; 514 REFCOUNT(new_data) = 0; /* usage counter */ 515 516 p = new_data; 517 for (i = 0; i < op->charcount; i++) { 518 memcpy(p, data, h); 519 data += 32; 520 p += h; 521 } 522 523 /* check if font is already used by other console */ 524 for (i = 0; i < MAX_NR_CONSOLES; i++) { 525 if (font_data[i] != FONT_DATA 526 && FNTSIZE(font_data[i]) == size 527 && !memcmp(font_data[i], new_data, size)) { 528 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 529 /* current font is the same as the new one */ 530 if (i == unit) 531 return 0; 532 new_data = font_data[i]; 533 break; 534 } 535 } 536 /* old font is user font */ 537 if (font_data[unit] != FONT_DATA) { 538 if (--REFCOUNT(font_data[unit]) == 0) 539 kfree(font_data[unit] - 540 FONT_EXTRA_WORDS * sizeof(int)); 541 } 542 REFCOUNT(new_data)++; 543 font_data[unit] = new_data; 544 545 return 0; 546 } 547 548 static int newport_set_def_font(int unit, struct console_font *op) 549 { 550 if (font_data[unit] != FONT_DATA) { 551 if (--REFCOUNT(font_data[unit]) == 0) 552 kfree(font_data[unit] - 553 FONT_EXTRA_WORDS * sizeof(int)); 554 font_data[unit] = FONT_DATA; 555 } 556 557 return 0; 558 } 559 560 static int newport_font_default(struct vc_data *vc, struct console_font *op, char *name) 561 { 562 return newport_set_def_font(vc->vc_num, op); 563 } 564 565 static int newport_font_set(struct vc_data *vc, struct console_font *font, unsigned flags) 566 { 567 return newport_set_font(vc->vc_num, font); 568 } 569 570 static int newport_set_palette(struct vc_data *vc, unsigned char *table) 571 { 572 return -EINVAL; 573 } 574 575 static int newport_scrolldelta(struct vc_data *vc, int lines) 576 { 577 /* there is (nearly) no off-screen memory, so we can't scroll back */ 578 return 0; 579 } 580 581 static int newport_scroll(struct vc_data *vc, int t, int b, int dir, 582 int lines) 583 { 584 int count, x, y; 585 unsigned short *s, *d; 586 unsigned short chattr; 587 588 logo_active = 0; /* it's time to disable the logo now.. */ 589 590 if (t == 0 && b == vc->vc_rows) { 591 if (dir == SM_UP) { 592 topscan = (topscan + (lines << 4)) & 0x3ff; 593 newport_clear_lines(vc->vc_rows - lines, 594 vc->vc_rows - 1, 595 (vc->vc_color & 0xf0) >> 4); 596 } else { 597 topscan = (topscan + (-lines << 4)) & 0x3ff; 598 newport_clear_lines(0, lines - 1, 599 (vc->vc_color & 0xf0) >> 4); 600 } 601 npregs->cset.topscan = (topscan - 1) & 0x3ff; 602 return 0; 603 } 604 605 count = (b - t - lines) * vc->vc_cols; 606 if (dir == SM_UP) { 607 x = 0; 608 y = t; 609 s = (unsigned short *) (vc->vc_origin + 610 vc->vc_size_row * (t + lines)); 611 d = (unsigned short *) (vc->vc_origin + 612 vc->vc_size_row * t); 613 while (count--) { 614 chattr = scr_readw(s++); 615 if (chattr != scr_readw(d)) { 616 newport_putc(vc, chattr, y, x); 617 scr_writew(chattr, d); 618 } 619 d++; 620 if (++x == vc->vc_cols) { 621 x = 0; 622 y++; 623 } 624 } 625 d = (unsigned short *) (vc->vc_origin + 626 vc->vc_size_row * (b - lines)); 627 x = 0; 628 y = b - lines; 629 for (count = 0; count < (lines * vc->vc_cols); count++) { 630 if (scr_readw(d) != vc->vc_video_erase_char) { 631 newport_putc(vc, vc->vc_video_erase_char, 632 y, x); 633 scr_writew(vc->vc_video_erase_char, d); 634 } 635 d++; 636 if (++x == vc->vc_cols) { 637 x = 0; 638 y++; 639 } 640 } 641 } else { 642 x = vc->vc_cols - 1; 643 y = b - 1; 644 s = (unsigned short *) (vc->vc_origin + 645 vc->vc_size_row * (b - lines) - 2); 646 d = (unsigned short *) (vc->vc_origin + 647 vc->vc_size_row * b - 2); 648 while (count--) { 649 chattr = scr_readw(s--); 650 if (chattr != scr_readw(d)) { 651 newport_putc(vc, chattr, y, x); 652 scr_writew(chattr, d); 653 } 654 d--; 655 if (x-- == 0) { 656 x = vc->vc_cols - 1; 657 y--; 658 } 659 } 660 d = (unsigned short *) (vc->vc_origin + 661 vc->vc_size_row * t); 662 x = 0; 663 y = t; 664 for (count = 0; count < (lines * vc->vc_cols); count++) { 665 if (scr_readw(d) != vc->vc_video_erase_char) { 666 newport_putc(vc, vc->vc_video_erase_char, 667 y, x); 668 scr_writew(vc->vc_video_erase_char, d); 669 } 670 d++; 671 if (++x == vc->vc_cols) { 672 x = 0; 673 y++; 674 } 675 } 676 } 677 return 1; 678 } 679 680 static void newport_bmove(struct vc_data *vc, int sy, int sx, int dy, 681 int dx, int h, int w) 682 { 683 short xs, ys, xe, ye, xoffs, yoffs, tmp; 684 685 xs = sx << 3; 686 xe = ((sx + w) << 3) - 1; 687 /* 688 * as bmove is only used to move stuff around in the same line 689 * (h == 1), we don't care about wrap arounds caused by topscan != 0 690 */ 691 ys = ((sy << 4) + topscan) & 0x3ff; 692 ye = (((sy + h) << 4) - 1 + topscan) & 0x3ff; 693 xoffs = (dx - sx) << 3; 694 yoffs = (dy - sy) << 4; 695 if (xoffs > 0) { 696 /* move to the right, exchange starting points */ 697 tmp = xe; 698 xe = xs; 699 xs = tmp; 700 } 701 newport_wait(npregs); 702 npregs->set.drawmode0 = (NPORT_DMODE0_S2S | NPORT_DMODE0_BLOCK | 703 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 704 | NPORT_DMODE0_STOPY); 705 npregs->set.xystarti = (xs << 16) | ys; 706 npregs->set.xyendi = (xe << 16) | ye; 707 npregs->go.xymove = (xoffs << 16) | yoffs; 708 } 709 710 static int newport_dummy(struct vc_data *c) 711 { 712 return 0; 713 } 714 715 #define DUMMY (void *) newport_dummy 716 717 const struct consw newport_con = { 718 .owner = THIS_MODULE, 719 .con_startup = newport_startup, 720 .con_init = newport_init, 721 .con_deinit = newport_deinit, 722 .con_clear = newport_clear, 723 .con_putc = newport_putc, 724 .con_putcs = newport_putcs, 725 .con_cursor = newport_cursor, 726 .con_scroll = newport_scroll, 727 .con_bmove = newport_bmove, 728 .con_switch = newport_switch, 729 .con_blank = newport_blank, 730 .con_font_set = newport_font_set, 731 .con_font_default = newport_font_default, 732 .con_set_palette = newport_set_palette, 733 .con_scrolldelta = newport_scrolldelta, 734 .con_set_origin = DUMMY, 735 .con_save_screen = DUMMY 736 }; 737 738 #ifdef MODULE 739 static int __init newport_console_init(void) 740 { 741 if (!sgi_gfxaddr) 742 return 0; 743 744 if (!npregs) 745 npregs = (struct newport_regs *)/* ioremap cannot fail */ 746 ioremap(sgi_gfxaddr, sizeof(struct newport_regs)); 747 748 return take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1); 749 } 750 module_init(newport_console_init); 751 752 static void __exit newport_console_exit(void) 753 { 754 give_up_console(&newport_con); 755 iounmap((void *)npregs); 756 } 757 module_exit(newport_console_exit); 758 #endif 759 760 MODULE_LICENSE("GPL"); 761