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 struct linux_logo *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; 106 const unsigned char *data; 107 unsigned long i; 108 109 if (!logo) 110 return NULL; 111 *clut = logo->clut; 112 *data = logo->data; 113 114 for (i = 0; i < logo->clutsize; i++) { 115 newport_bfwait(npregs); 116 newport_cmap_setaddr(npregs, i + 0x20); 117 newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]); 118 clut += 3; 119 } 120 121 newport_wait(npregs); 122 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 123 NPORT_DMODE0_CHOST); 124 125 npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0); 126 npregs->set.xyendi = ((newport_xsize - 1) << 16); 127 newport_wait(npregs); 128 129 for (i = 0; i < logo->width*logo->height; i++) 130 npregs->go.hostrw0 = *data++ << 24; 131 132 return logo; 133 #endif /* CONFIG_LOGO_SGI_CLUT224 */ 134 } 135 136 static inline void newport_clear_screen(int xstart, int ystart, int xend, 137 int yend, int ci) 138 { 139 if (logo_active) 140 return; 141 142 newport_wait(npregs); 143 npregs->set.wrmask = 0xffffffff; 144 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 145 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 146 | NPORT_DMODE0_STOPY); 147 npregs->set.colori = ci; 148 npregs->set.xystarti = (xstart << 16) | ystart; 149 npregs->go.xyendi = (xend << 16) | yend; 150 } 151 152 static inline void newport_clear_lines(int ystart, int yend, int ci) 153 { 154 ystart = ((ystart << 4) + topscan) & 0x3ff; 155 yend = ((yend << 4) + topscan + 15) & 0x3ff; 156 newport_clear_screen(0, ystart, 1280 + 63, yend, ci); 157 } 158 159 static void newport_reset(void) 160 { 161 unsigned short treg; 162 int i; 163 164 newport_wait(npregs); 165 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 166 newport_vc2_set(npregs, VC2_IREG_CONTROL, 167 (treg | VC2_CTRL_EVIDEO)); 168 169 treg = newport_vc2_get(npregs, VC2_IREG_CENTRY); 170 newport_vc2_set(npregs, VC2_IREG_RADDR, treg); 171 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 172 NPORT_DMODE_W2 | VC2_PROTOCOL); 173 for (i = 0; i < 128; i++) { 174 newport_bfwait(npregs); 175 if (i == 92 || i == 94) 176 npregs->set.dcbdata0.byshort.s1 = 0xff00; 177 else 178 npregs->set.dcbdata0.byshort.s1 = 0x0000; 179 } 180 181 newport_init_cmap(); 182 183 /* turn off popup plane */ 184 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 185 XM9_CRS_CONFIG | NPORT_DMODE_W1); 186 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 187 npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL | 188 XM9_CRS_CONFIG | NPORT_DMODE_W1); 189 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 190 191 topscan = 0; 192 npregs->cset.topscan = 0x3ff; 193 npregs->cset.xywin = (4096 << 16) | 4096; 194 195 /* Clear the screen. */ 196 newport_clear_screen(0, 0, 1280 + 63, 1024, 0); 197 } 198 199 /* 200 * calculate the actual screen size by reading 201 * the video timing out of the VC2 202 */ 203 static void newport_get_screensize(void) 204 { 205 int i, cols; 206 unsigned short ventry, treg; 207 unsigned short linetable[128]; /* should be enough */ 208 209 ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY); 210 newport_vc2_set(npregs, VC2_IREG_RADDR, ventry); 211 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 212 NPORT_DMODE_W2 | VC2_PROTOCOL); 213 for (i = 0; i < 128; i++) { 214 newport_bfwait(npregs); 215 linetable[i] = npregs->set.dcbdata0.byshort.s1; 216 } 217 218 newport_xsize = newport_ysize = 0; 219 for (i = 0; linetable[i + 1] && (i < sizeof(linetable)); i += 2) { 220 cols = 0; 221 newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]); 222 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 223 NPORT_DMODE_W2 | VC2_PROTOCOL); 224 do { 225 newport_bfwait(npregs); 226 treg = npregs->set.dcbdata0.byshort.s1; 227 if ((treg & 1) == 0) 228 cols += (treg >> 7) & 0xfe; 229 if ((treg & 0x80) == 0) { 230 newport_bfwait(npregs); 231 treg = npregs->set.dcbdata0.byshort.s1; 232 } 233 } while ((treg & 0x8000) == 0); 234 if (cols) { 235 if (cols > newport_xsize) 236 newport_xsize = cols; 237 newport_ysize += linetable[i + 1]; 238 } 239 } 240 printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize); 241 } 242 243 static void newport_get_revisions(void) 244 { 245 unsigned int tmp; 246 unsigned int board_rev; 247 unsigned int rex3_rev; 248 unsigned int vc2_rev; 249 unsigned int cmap_rev; 250 unsigned int xmap9_rev; 251 unsigned int bt445_rev; 252 unsigned int bitplanes; 253 254 rex3_rev = npregs->cset.status & NPORT_STAT_VERS; 255 256 npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL | 257 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 258 tmp = npregs->set.dcbdata0.bybytes.b3; 259 cmap_rev = tmp & 7; 260 board_rev = (tmp >> 4) & 7; 261 bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24; 262 263 npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL | 264 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 265 tmp = npregs->set.dcbdata0.bybytes.b3; 266 if ((tmp & 7) < cmap_rev) 267 cmap_rev = (tmp & 7); 268 269 vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7; 270 271 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 272 XM9_CRS_REVISION | NPORT_DMODE_W1); 273 xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7; 274 275 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 276 BT445_CSR_ADDR_REG | NPORT_DMODE_W1); 277 npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG; 278 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 279 BT445_CSR_REVISION | NPORT_DMODE_W1); 280 bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a; 281 282 #define L(a) (char)('A'+(a)) 283 printk 284 ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n", 285 board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev), 286 L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev)); 287 #undef L 288 289 if (board_rev == 3) /* I don't know all affected revisions */ 290 xcurs_correction = 21; 291 } 292 293 static void newport_exit(void) 294 { 295 int i; 296 297 /* free memory used by user font */ 298 for (i = 0; i < MAX_NR_CONSOLES; i++) 299 newport_set_def_font(i, NULL); 300 } 301 302 /* Can't be __init, take_over_console may call it later */ 303 static const char *newport_startup(void) 304 { 305 int i; 306 307 if (!sgi_gfxaddr) 308 return NULL; 309 310 if (!npregs) 311 npregs = (struct newport_regs *)/* ioremap cannot fail */ 312 ioremap(sgi_gfxaddr, sizeof(struct newport_regs)); 313 npregs->cset.config = NPORT_CFG_GD0; 314 315 if (newport_wait(npregs)) 316 goto out_unmap; 317 318 npregs->set.xstarti = TESTVAL; 319 if (npregs->set._xstart.word != XSTI_TO_FXSTART(TESTVAL)) 320 goto out_unmap; 321 322 for (i = 0; i < MAX_NR_CONSOLES; i++) 323 font_data[i] = FONT_DATA; 324 325 newport_reset(); 326 newport_get_revisions(); 327 newport_get_screensize(); 328 newport_has_init = 1; 329 330 return "SGI Newport"; 331 332 out_unmap: 333 return NULL; 334 } 335 336 static void newport_init(struct vc_data *vc, int init) 337 { 338 vc->vc_cols = newport_xsize / 8; 339 vc->vc_rows = newport_ysize / 16; 340 vc->vc_can_do_color = 1; 341 } 342 343 static void newport_deinit(struct vc_data *c) 344 { 345 if (!con_is_bound(&newport_con) && newport_has_init) { 346 newport_exit(); 347 newport_has_init = 0; 348 } 349 } 350 351 static void newport_clear(struct vc_data *vc, int sy, int sx, int height, 352 int width) 353 { 354 int xend = ((sx + width) << 3) - 1; 355 int ystart = ((sy << 4) + topscan) & 0x3ff; 356 int yend = (((sy + height) << 4) + topscan - 1) & 0x3ff; 357 358 if (logo_active) 359 return; 360 361 if (ystart < yend) { 362 newport_clear_screen(sx << 3, ystart, xend, yend, 363 (vc->vc_color & 0xf0) >> 4); 364 } else { 365 newport_clear_screen(sx << 3, ystart, xend, 1023, 366 (vc->vc_color & 0xf0) >> 4); 367 newport_clear_screen(sx << 3, 0, xend, yend, 368 (vc->vc_color & 0xf0) >> 4); 369 } 370 } 371 372 static void newport_putc(struct vc_data *vc, int charattr, int ypos, 373 int xpos) 374 { 375 unsigned char *p; 376 377 p = &font_data[vc->vc_num][(charattr & 0xff) << 4]; 378 charattr = (charattr >> 8) & 0xff; 379 xpos <<= 3; 380 ypos <<= 4; 381 382 newport_render_background(xpos, ypos, xpos, ypos, 383 (charattr & 0xf0) >> 4); 384 385 /* Set the color and drawing mode. */ 386 newport_wait(npregs); 387 npregs->set.colori = charattr & 0xf; 388 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 389 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 390 NPORT_DMODE0_L32); 391 392 /* Set coordinates for bitmap operation. */ 393 npregs->set.xystarti = (xpos << 16) | ((ypos + topscan) & 0x3ff); 394 npregs->set.xyendi = ((xpos + 7) << 16); 395 newport_wait(npregs); 396 397 /* Go, baby, go... */ 398 RENDER(npregs, p); 399 } 400 401 static void newport_putcs(struct vc_data *vc, const unsigned short *s, 402 int count, int ypos, int xpos) 403 { 404 int i; 405 int charattr; 406 unsigned char *p; 407 408 charattr = (scr_readw(s) >> 8) & 0xff; 409 410 xpos <<= 3; 411 ypos <<= 4; 412 413 if (!logo_active) 414 /* Clear the area behing the string */ 415 newport_render_background(xpos, ypos, 416 xpos + ((count - 1) << 3), ypos, 417 (charattr & 0xf0) >> 4); 418 419 newport_wait(npregs); 420 421 /* Set the color and drawing mode. */ 422 npregs->set.colori = charattr & 0xf; 423 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 424 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 425 NPORT_DMODE0_L32); 426 427 for (i = 0; i < count; i++, xpos += 8) { 428 p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4]; 429 430 newport_wait(npregs); 431 432 /* Set coordinates for bitmap operation. */ 433 npregs->set.xystarti = 434 (xpos << 16) | ((ypos + topscan) & 0x3ff); 435 npregs->set.xyendi = ((xpos + 7) << 16); 436 437 /* Go, baby, go... */ 438 RENDER(npregs, p); 439 } 440 } 441 442 static void newport_cursor(struct vc_data *vc, int mode) 443 { 444 unsigned short treg; 445 int xcurs, ycurs; 446 447 switch (mode) { 448 case CM_ERASE: 449 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 450 newport_vc2_set(npregs, VC2_IREG_CONTROL, 451 (treg & ~(VC2_CTRL_ECDISP))); 452 break; 453 454 case CM_MOVE: 455 case CM_DRAW: 456 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 457 newport_vc2_set(npregs, VC2_IREG_CONTROL, 458 (treg | VC2_CTRL_ECDISP)); 459 xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2; 460 ycurs = ((xcurs / vc->vc_cols) << 4) + 31; 461 xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction; 462 newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs); 463 newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs); 464 } 465 } 466 467 static int newport_switch(struct vc_data *vc) 468 { 469 static int logo_drawn = 0; 470 471 topscan = 0; 472 npregs->cset.topscan = 0x3ff; 473 474 if (!logo_drawn) { 475 if (newport_show_logo()) { 476 logo_drawn = 1; 477 logo_active = 1; 478 } 479 } 480 481 return 1; 482 } 483 484 static int newport_blank(struct vc_data *c, int blank, int mode_switch) 485 { 486 unsigned short treg; 487 488 if (blank == 0) { 489 /* unblank console */ 490 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 491 newport_vc2_set(npregs, VC2_IREG_CONTROL, 492 (treg | VC2_CTRL_EDISP)); 493 } else { 494 /* blank console */ 495 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 496 newport_vc2_set(npregs, VC2_IREG_CONTROL, 497 (treg & ~(VC2_CTRL_EDISP))); 498 } 499 return 1; 500 } 501 502 static int newport_set_font(int unit, struct console_font *op) 503 { 504 int w = op->width; 505 int h = op->height; 506 int size = h * op->charcount; 507 int i; 508 unsigned char *new_data, *data = op->data, *p; 509 510 /* ladis: when I grow up, there will be a day... and more sizes will 511 * be supported ;-) */ 512 if ((w != 8) || (h != 16) 513 || (op->charcount != 256 && op->charcount != 512)) 514 return -EINVAL; 515 516 if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, 517 GFP_USER))) return -ENOMEM; 518 519 new_data += FONT_EXTRA_WORDS * sizeof(int); 520 FNTSIZE(new_data) = size; 521 FNTCHARCNT(new_data) = op->charcount; 522 REFCOUNT(new_data) = 0; /* usage counter */ 523 524 p = new_data; 525 for (i = 0; i < op->charcount; i++) { 526 memcpy(p, data, h); 527 data += 32; 528 p += h; 529 } 530 531 /* check if font is already used by other console */ 532 for (i = 0; i < MAX_NR_CONSOLES; i++) { 533 if (font_data[i] != FONT_DATA 534 && FNTSIZE(font_data[i]) == size 535 && !memcmp(font_data[i], new_data, size)) { 536 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 537 /* current font is the same as the new one */ 538 if (i == unit) 539 return 0; 540 new_data = font_data[i]; 541 break; 542 } 543 } 544 /* old font is user font */ 545 if (font_data[unit] != FONT_DATA) { 546 if (--REFCOUNT(font_data[unit]) == 0) 547 kfree(font_data[unit] - 548 FONT_EXTRA_WORDS * sizeof(int)); 549 } 550 REFCOUNT(new_data)++; 551 font_data[unit] = new_data; 552 553 return 0; 554 } 555 556 static int newport_set_def_font(int unit, struct console_font *op) 557 { 558 if (font_data[unit] != FONT_DATA) { 559 if (--REFCOUNT(font_data[unit]) == 0) 560 kfree(font_data[unit] - 561 FONT_EXTRA_WORDS * sizeof(int)); 562 font_data[unit] = FONT_DATA; 563 } 564 565 return 0; 566 } 567 568 static int newport_font_default(struct vc_data *vc, struct console_font *op, char *name) 569 { 570 return newport_set_def_font(vc->vc_num, op); 571 } 572 573 static int newport_font_set(struct vc_data *vc, struct console_font *font, unsigned flags) 574 { 575 return newport_set_font(vc->vc_num, font); 576 } 577 578 static int newport_set_palette(struct vc_data *vc, unsigned char *table) 579 { 580 return -EINVAL; 581 } 582 583 static int newport_scrolldelta(struct vc_data *vc, int lines) 584 { 585 /* there is (nearly) no off-screen memory, so we can't scroll back */ 586 return 0; 587 } 588 589 static int newport_scroll(struct vc_data *vc, int t, int b, int dir, 590 int lines) 591 { 592 int count, x, y; 593 unsigned short *s, *d; 594 unsigned short chattr; 595 596 logo_active = 0; /* it's time to disable the logo now.. */ 597 598 if (t == 0 && b == vc->vc_rows) { 599 if (dir == SM_UP) { 600 topscan = (topscan + (lines << 4)) & 0x3ff; 601 newport_clear_lines(vc->vc_rows - lines, 602 vc->vc_rows - 1, 603 (vc->vc_color & 0xf0) >> 4); 604 } else { 605 topscan = (topscan + (-lines << 4)) & 0x3ff; 606 newport_clear_lines(0, lines - 1, 607 (vc->vc_color & 0xf0) >> 4); 608 } 609 npregs->cset.topscan = (topscan - 1) & 0x3ff; 610 return 0; 611 } 612 613 count = (b - t - lines) * vc->vc_cols; 614 if (dir == SM_UP) { 615 x = 0; 616 y = t; 617 s = (unsigned short *) (vc->vc_origin + 618 vc->vc_size_row * (t + lines)); 619 d = (unsigned short *) (vc->vc_origin + 620 vc->vc_size_row * t); 621 while (count--) { 622 chattr = scr_readw(s++); 623 if (chattr != scr_readw(d)) { 624 newport_putc(vc, chattr, y, x); 625 scr_writew(chattr, d); 626 } 627 d++; 628 if (++x == vc->vc_cols) { 629 x = 0; 630 y++; 631 } 632 } 633 d = (unsigned short *) (vc->vc_origin + 634 vc->vc_size_row * (b - lines)); 635 x = 0; 636 y = b - lines; 637 for (count = 0; count < (lines * vc->vc_cols); count++) { 638 if (scr_readw(d) != vc->vc_video_erase_char) { 639 newport_putc(vc, vc->vc_video_erase_char, 640 y, x); 641 scr_writew(vc->vc_video_erase_char, d); 642 } 643 d++; 644 if (++x == vc->vc_cols) { 645 x = 0; 646 y++; 647 } 648 } 649 } else { 650 x = vc->vc_cols - 1; 651 y = b - 1; 652 s = (unsigned short *) (vc->vc_origin + 653 vc->vc_size_row * (b - lines) - 2); 654 d = (unsigned short *) (vc->vc_origin + 655 vc->vc_size_row * b - 2); 656 while (count--) { 657 chattr = scr_readw(s--); 658 if (chattr != scr_readw(d)) { 659 newport_putc(vc, chattr, y, x); 660 scr_writew(chattr, d); 661 } 662 d--; 663 if (x-- == 0) { 664 x = vc->vc_cols - 1; 665 y--; 666 } 667 } 668 d = (unsigned short *) (vc->vc_origin + 669 vc->vc_size_row * t); 670 x = 0; 671 y = t; 672 for (count = 0; count < (lines * vc->vc_cols); count++) { 673 if (scr_readw(d) != vc->vc_video_erase_char) { 674 newport_putc(vc, vc->vc_video_erase_char, 675 y, x); 676 scr_writew(vc->vc_video_erase_char, d); 677 } 678 d++; 679 if (++x == vc->vc_cols) { 680 x = 0; 681 y++; 682 } 683 } 684 } 685 return 1; 686 } 687 688 static void newport_bmove(struct vc_data *vc, int sy, int sx, int dy, 689 int dx, int h, int w) 690 { 691 short xs, ys, xe, ye, xoffs, yoffs, tmp; 692 693 xs = sx << 3; 694 xe = ((sx + w) << 3) - 1; 695 /* 696 * as bmove is only used to move stuff around in the same line 697 * (h == 1), we don't care about wrap arounds caused by topscan != 0 698 */ 699 ys = ((sy << 4) + topscan) & 0x3ff; 700 ye = (((sy + h) << 4) - 1 + topscan) & 0x3ff; 701 xoffs = (dx - sx) << 3; 702 yoffs = (dy - sy) << 4; 703 if (xoffs > 0) { 704 /* move to the right, exchange starting points */ 705 tmp = xe; 706 xe = xs; 707 xs = tmp; 708 } 709 newport_wait(npregs); 710 npregs->set.drawmode0 = (NPORT_DMODE0_S2S | NPORT_DMODE0_BLOCK | 711 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 712 | NPORT_DMODE0_STOPY); 713 npregs->set.xystarti = (xs << 16) | ys; 714 npregs->set.xyendi = (xe << 16) | ye; 715 npregs->go.xymove = (xoffs << 16) | yoffs; 716 } 717 718 static int newport_dummy(struct vc_data *c) 719 { 720 return 0; 721 } 722 723 #define DUMMY (void *) newport_dummy 724 725 const struct consw newport_con = { 726 .owner = THIS_MODULE, 727 .con_startup = newport_startup, 728 .con_init = newport_init, 729 .con_deinit = newport_deinit, 730 .con_clear = newport_clear, 731 .con_putc = newport_putc, 732 .con_putcs = newport_putcs, 733 .con_cursor = newport_cursor, 734 .con_scroll = newport_scroll, 735 .con_bmove = newport_bmove, 736 .con_switch = newport_switch, 737 .con_blank = newport_blank, 738 .con_font_set = newport_font_set, 739 .con_font_default = newport_font_default, 740 .con_set_palette = newport_set_palette, 741 .con_scrolldelta = newport_scrolldelta, 742 .con_set_origin = DUMMY, 743 .con_save_screen = DUMMY 744 }; 745 746 #ifdef MODULE 747 static int __init newport_console_init(void) 748 { 749 if (!sgi_gfxaddr) 750 return 0; 751 752 if (!npregs) 753 npregs = (struct newport_regs *)/* ioremap cannot fail */ 754 ioremap(sgi_gfxaddr, sizeof(struct newport_regs)); 755 756 return take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1); 757 } 758 module_init(newport_console_init); 759 760 static void __exit newport_console_exit(void) 761 { 762 give_up_console(&newport_con); 763 iounmap((void *)npregs); 764 } 765 module_exit(newport_console_exit); 766 #endif 767 768 MODULE_LICENSE("GPL"); 769