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 (davem@davemloft.net) 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 <linux/uaccess.h> 25 #include <asm/page.h> 26 #include <asm/pgtable.h> 27 #include <asm/gio_device.h> 28 29 #include <video/newport.h> 30 31 #include <linux/linux_logo.h> 32 #include <linux/font.h> 33 34 #define FONT_DATA ((unsigned char *)font_vga_8x16.data) 35 36 /* borrowed from fbcon.c */ 37 #define REFCOUNT(fd) (((int *)(fd))[-1]) 38 #define FNTSIZE(fd) (((int *)(fd))[-2]) 39 #define FNTCHARCNT(fd) (((int *)(fd))[-3]) 40 #define FONT_EXTRA_WORDS 3 41 42 static unsigned char *font_data[MAX_NR_CONSOLES]; 43 44 static struct newport_regs *npregs; 45 46 static int logo_active; 47 static int topscan; 48 static int xcurs_correction = 29; 49 static int newport_xsize; 50 static int newport_ysize; 51 static int newport_has_init; 52 53 static int newport_set_def_font(int unit, struct console_font *op); 54 55 #define BMASK(c) (c << 24) 56 57 #define RENDER(regs, cp) do { \ 58 (regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \ 59 (regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \ 60 (regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \ 61 (regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \ 62 (regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \ 63 (regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \ 64 (regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \ 65 (regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \ 66 } while(0) 67 68 #define TESTVAL 0xdeadbeef 69 #define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11) 70 71 static inline void newport_render_background(int xstart, int ystart, 72 int xend, int yend, int ci) 73 { 74 newport_wait(npregs); 75 npregs->set.wrmask = 0xffffffff; 76 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 77 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 78 | NPORT_DMODE0_STOPY); 79 npregs->set.colori = ci; 80 npregs->set.xystarti = 81 (xstart << 16) | ((ystart + topscan) & 0x3ff); 82 npregs->go.xyendi = 83 ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff); 84 } 85 86 static inline void newport_init_cmap(void) 87 { 88 unsigned short i; 89 90 for (i = 0; i < 16; i++) { 91 newport_bfwait(npregs); 92 newport_cmap_setaddr(npregs, color_table[i]); 93 newport_cmap_setrgb(npregs, 94 default_red[i], 95 default_grn[i], default_blu[i]); 96 } 97 } 98 99 static const struct linux_logo *newport_show_logo(void) 100 { 101 #ifdef CONFIG_LOGO_SGI_CLUT224 102 const struct linux_logo *logo = fb_find_logo(8); 103 const unsigned char *clut; 104 const unsigned char *data; 105 unsigned long i; 106 107 if (!logo) 108 return NULL; 109 clut = logo->clut; 110 data = logo->data; 111 112 for (i = 0; i < logo->clutsize; i++) { 113 newport_bfwait(npregs); 114 newport_cmap_setaddr(npregs, i + 0x20); 115 newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]); 116 clut += 3; 117 } 118 119 newport_wait(npregs); 120 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 121 NPORT_DMODE0_CHOST); 122 123 npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0); 124 npregs->set.xyendi = ((newport_xsize - 1) << 16); 125 newport_wait(npregs); 126 127 for (i = 0; i < logo->width*logo->height; i++) 128 npregs->go.hostrw0 = *data++ << 24; 129 130 return logo; 131 #endif /* CONFIG_LOGO_SGI_CLUT224 */ 132 } 133 134 static inline void newport_clear_screen(int xstart, int ystart, int xend, 135 int yend, int ci) 136 { 137 if (logo_active) 138 return; 139 140 newport_wait(npregs); 141 npregs->set.wrmask = 0xffffffff; 142 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 143 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 144 | NPORT_DMODE0_STOPY); 145 npregs->set.colori = ci; 146 npregs->set.xystarti = (xstart << 16) | ystart; 147 npregs->go.xyendi = (xend << 16) | yend; 148 } 149 150 static inline void newport_clear_lines(int ystart, int yend, int ci) 151 { 152 ystart = ((ystart << 4) + topscan) & 0x3ff; 153 yend = ((yend << 4) + topscan + 15) & 0x3ff; 154 newport_clear_screen(0, ystart, 1280 + 63, yend, ci); 155 } 156 157 static void newport_reset(void) 158 { 159 unsigned short treg; 160 int i; 161 162 newport_wait(npregs); 163 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 164 newport_vc2_set(npregs, VC2_IREG_CONTROL, 165 (treg | VC2_CTRL_EVIDEO)); 166 167 treg = newport_vc2_get(npregs, VC2_IREG_CENTRY); 168 newport_vc2_set(npregs, VC2_IREG_RADDR, treg); 169 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 170 NPORT_DMODE_W2 | VC2_PROTOCOL); 171 for (i = 0; i < 128; i++) { 172 newport_bfwait(npregs); 173 if (i == 92 || i == 94) 174 npregs->set.dcbdata0.byshort.s1 = 0xff00; 175 else 176 npregs->set.dcbdata0.byshort.s1 = 0x0000; 177 } 178 179 newport_init_cmap(); 180 181 /* turn off popup plane */ 182 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 183 XM9_CRS_CONFIG | NPORT_DMODE_W1); 184 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 185 npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL | 186 XM9_CRS_CONFIG | NPORT_DMODE_W1); 187 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 188 189 topscan = 0; 190 npregs->cset.topscan = 0x3ff; 191 npregs->cset.xywin = (4096 << 16) | 4096; 192 193 /* Clear the screen. */ 194 newport_clear_screen(0, 0, 1280 + 63, 1024, 0); 195 } 196 197 /* 198 * calculate the actual screen size by reading 199 * the video timing out of the VC2 200 */ 201 static void newport_get_screensize(void) 202 { 203 int i, cols; 204 unsigned short ventry, treg; 205 unsigned short linetable[128]; /* should be enough */ 206 207 ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY); 208 newport_vc2_set(npregs, VC2_IREG_RADDR, ventry); 209 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 210 NPORT_DMODE_W2 | VC2_PROTOCOL); 211 for (i = 0; i < 128; i++) { 212 newport_bfwait(npregs); 213 linetable[i] = npregs->set.dcbdata0.byshort.s1; 214 } 215 216 newport_xsize = newport_ysize = 0; 217 for (i = 0; i < ARRAY_SIZE(linetable) - 1 && linetable[i + 1]; i += 2) { 218 cols = 0; 219 newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]); 220 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 221 NPORT_DMODE_W2 | VC2_PROTOCOL); 222 do { 223 newport_bfwait(npregs); 224 treg = npregs->set.dcbdata0.byshort.s1; 225 if ((treg & 1) == 0) 226 cols += (treg >> 7) & 0xfe; 227 if ((treg & 0x80) == 0) { 228 newport_bfwait(npregs); 229 treg = npregs->set.dcbdata0.byshort.s1; 230 } 231 } while ((treg & 0x8000) == 0); 232 if (cols) { 233 if (cols > newport_xsize) 234 newport_xsize = cols; 235 newport_ysize += linetable[i + 1]; 236 } 237 } 238 printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize); 239 } 240 241 static void newport_get_revisions(void) 242 { 243 unsigned int tmp; 244 unsigned int board_rev; 245 unsigned int rex3_rev; 246 unsigned int vc2_rev; 247 unsigned int cmap_rev; 248 unsigned int xmap9_rev; 249 unsigned int bt445_rev; 250 unsigned int bitplanes; 251 252 rex3_rev = npregs->cset.status & NPORT_STAT_VERS; 253 254 npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL | 255 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 256 tmp = npregs->set.dcbdata0.bybytes.b3; 257 cmap_rev = tmp & 7; 258 board_rev = (tmp >> 4) & 7; 259 bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24; 260 261 npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL | 262 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 263 tmp = npregs->set.dcbdata0.bybytes.b3; 264 if ((tmp & 7) < cmap_rev) 265 cmap_rev = (tmp & 7); 266 267 vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7; 268 269 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 270 XM9_CRS_REVISION | NPORT_DMODE_W1); 271 xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7; 272 273 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 274 BT445_CSR_ADDR_REG | NPORT_DMODE_W1); 275 npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG; 276 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 277 BT445_CSR_REVISION | NPORT_DMODE_W1); 278 bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a; 279 280 #define L(a) (char)('A'+(a)) 281 printk 282 ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n", 283 board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev), 284 L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev)); 285 #undef L 286 287 if (board_rev == 3) /* I don't know all affected revisions */ 288 xcurs_correction = 21; 289 } 290 291 static void newport_exit(void) 292 { 293 int i; 294 295 /* free memory used by user font */ 296 for (i = 0; i < MAX_NR_CONSOLES; i++) 297 newport_set_def_font(i, NULL); 298 } 299 300 /* Can't be __init, do_take_over_console may call it later */ 301 static const char *newport_startup(void) 302 { 303 int i; 304 305 npregs->cset.config = NPORT_CFG_GD0; 306 307 if (newport_wait(npregs)) 308 goto out_unmap; 309 310 npregs->set.xstarti = TESTVAL; 311 if (npregs->set._xstart.word != XSTI_TO_FXSTART(TESTVAL)) 312 goto out_unmap; 313 314 for (i = 0; i < MAX_NR_CONSOLES; i++) 315 font_data[i] = FONT_DATA; 316 317 newport_reset(); 318 newport_get_revisions(); 319 newport_get_screensize(); 320 newport_has_init = 1; 321 322 return "SGI Newport"; 323 324 out_unmap: 325 return NULL; 326 } 327 328 static void newport_init(struct vc_data *vc, int init) 329 { 330 int cols, rows; 331 332 cols = newport_xsize / 8; 333 rows = newport_ysize / 16; 334 vc->vc_can_do_color = 1; 335 if (init) { 336 vc->vc_cols = cols; 337 vc->vc_rows = rows; 338 } else 339 vc_resize(vc, cols, rows); 340 } 341 342 static void newport_deinit(struct vc_data *c) 343 { 344 if (!con_is_bound(&newport_con) && newport_has_init) { 345 newport_exit(); 346 newport_has_init = 0; 347 } 348 } 349 350 static void newport_clear(struct vc_data *vc, int sy, int sx, int height, 351 int width) 352 { 353 int xend = ((sx + width) << 3) - 1; 354 int ystart = ((sy << 4) + topscan) & 0x3ff; 355 int yend = (((sy + height) << 4) + topscan - 1) & 0x3ff; 356 357 if (logo_active) 358 return; 359 360 if (ystart < yend) { 361 newport_clear_screen(sx << 3, ystart, xend, yend, 362 (vc->vc_color & 0xf0) >> 4); 363 } else { 364 newport_clear_screen(sx << 3, ystart, xend, 1023, 365 (vc->vc_color & 0xf0) >> 4); 366 newport_clear_screen(sx << 3, 0, xend, yend, 367 (vc->vc_color & 0xf0) >> 4); 368 } 369 } 370 371 static void newport_putc(struct vc_data *vc, int charattr, int ypos, 372 int xpos) 373 { 374 unsigned char *p; 375 376 p = &font_data[vc->vc_num][(charattr & 0xff) << 4]; 377 charattr = (charattr >> 8) & 0xff; 378 xpos <<= 3; 379 ypos <<= 4; 380 381 newport_render_background(xpos, ypos, xpos, ypos, 382 (charattr & 0xf0) >> 4); 383 384 /* Set the color and drawing mode. */ 385 newport_wait(npregs); 386 npregs->set.colori = charattr & 0xf; 387 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 388 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 389 NPORT_DMODE0_L32); 390 391 /* Set coordinates for bitmap operation. */ 392 npregs->set.xystarti = (xpos << 16) | ((ypos + topscan) & 0x3ff); 393 npregs->set.xyendi = ((xpos + 7) << 16); 394 newport_wait(npregs); 395 396 /* Go, baby, go... */ 397 RENDER(npregs, p); 398 } 399 400 static void newport_putcs(struct vc_data *vc, const unsigned short *s, 401 int count, int ypos, int xpos) 402 { 403 int i; 404 int charattr; 405 unsigned char *p; 406 407 charattr = (scr_readw(s) >> 8) & 0xff; 408 409 xpos <<= 3; 410 ypos <<= 4; 411 412 if (!logo_active) 413 /* Clear the area behing the string */ 414 newport_render_background(xpos, ypos, 415 xpos + ((count - 1) << 3), ypos, 416 (charattr & 0xf0) >> 4); 417 418 newport_wait(npregs); 419 420 /* Set the color and drawing mode. */ 421 npregs->set.colori = charattr & 0xf; 422 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 423 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 424 NPORT_DMODE0_L32); 425 426 for (i = 0; i < count; i++, xpos += 8) { 427 p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4]; 428 429 newport_wait(npregs); 430 431 /* Set coordinates for bitmap operation. */ 432 npregs->set.xystarti = 433 (xpos << 16) | ((ypos + topscan) & 0x3ff); 434 npregs->set.xyendi = ((xpos + 7) << 16); 435 436 /* Go, baby, go... */ 437 RENDER(npregs, p); 438 } 439 } 440 441 static void newport_cursor(struct vc_data *vc, int mode) 442 { 443 unsigned short treg; 444 int xcurs, ycurs; 445 446 switch (mode) { 447 case CM_ERASE: 448 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 449 newport_vc2_set(npregs, VC2_IREG_CONTROL, 450 (treg & ~(VC2_CTRL_ECDISP))); 451 break; 452 453 case CM_MOVE: 454 case CM_DRAW: 455 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 456 newport_vc2_set(npregs, VC2_IREG_CONTROL, 457 (treg | VC2_CTRL_ECDISP)); 458 xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2; 459 ycurs = ((xcurs / vc->vc_cols) << 4) + 31; 460 xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction; 461 newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs); 462 newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs); 463 } 464 } 465 466 static int newport_switch(struct vc_data *vc) 467 { 468 static int logo_drawn = 0; 469 470 topscan = 0; 471 npregs->cset.topscan = 0x3ff; 472 473 if (!logo_drawn) { 474 if (newport_show_logo()) { 475 logo_drawn = 1; 476 logo_active = 1; 477 } 478 } 479 480 return 1; 481 } 482 483 static int newport_blank(struct vc_data *c, int blank, int mode_switch) 484 { 485 unsigned short treg; 486 487 if (blank == 0) { 488 /* unblank console */ 489 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 490 newport_vc2_set(npregs, VC2_IREG_CONTROL, 491 (treg | VC2_CTRL_EDISP)); 492 } else { 493 /* blank console */ 494 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 495 newport_vc2_set(npregs, VC2_IREG_CONTROL, 496 (treg & ~(VC2_CTRL_EDISP))); 497 } 498 return 1; 499 } 500 501 static int newport_set_font(int unit, struct console_font *op) 502 { 503 int w = op->width; 504 int h = op->height; 505 int size = h * op->charcount; 506 int i; 507 unsigned char *new_data, *data = op->data, *p; 508 509 /* ladis: when I grow up, there will be a day... and more sizes will 510 * be supported ;-) */ 511 if ((w != 8) || (h != 16) 512 || (op->charcount != 256 && op->charcount != 512)) 513 return -EINVAL; 514 515 if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, 516 GFP_USER))) return -ENOMEM; 517 518 new_data += FONT_EXTRA_WORDS * sizeof(int); 519 FNTSIZE(new_data) = size; 520 FNTCHARCNT(new_data) = op->charcount; 521 REFCOUNT(new_data) = 0; /* usage counter */ 522 523 p = new_data; 524 for (i = 0; i < op->charcount; i++) { 525 memcpy(p, data, h); 526 data += 32; 527 p += h; 528 } 529 530 /* check if font is already used by other console */ 531 for (i = 0; i < MAX_NR_CONSOLES; i++) { 532 if (font_data[i] != FONT_DATA 533 && FNTSIZE(font_data[i]) == size 534 && !memcmp(font_data[i], new_data, size)) { 535 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 536 /* current font is the same as the new one */ 537 if (i == unit) 538 return 0; 539 new_data = font_data[i]; 540 break; 541 } 542 } 543 /* old font is user font */ 544 if (font_data[unit] != FONT_DATA) { 545 if (--REFCOUNT(font_data[unit]) == 0) 546 kfree(font_data[unit] - 547 FONT_EXTRA_WORDS * sizeof(int)); 548 } 549 REFCOUNT(new_data)++; 550 font_data[unit] = new_data; 551 552 return 0; 553 } 554 555 static int newport_set_def_font(int unit, struct console_font *op) 556 { 557 if (font_data[unit] != FONT_DATA) { 558 if (--REFCOUNT(font_data[unit]) == 0) 559 kfree(font_data[unit] - 560 FONT_EXTRA_WORDS * sizeof(int)); 561 font_data[unit] = FONT_DATA; 562 } 563 564 return 0; 565 } 566 567 static int newport_font_default(struct vc_data *vc, struct console_font *op, char *name) 568 { 569 return newport_set_def_font(vc->vc_num, op); 570 } 571 572 static int newport_font_set(struct vc_data *vc, struct console_font *font, unsigned flags) 573 { 574 return newport_set_font(vc->vc_num, font); 575 } 576 577 static bool newport_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 578 enum con_scroll dir, unsigned int lines) 579 { 580 int count, x, y; 581 unsigned short *s, *d; 582 unsigned short chattr; 583 584 logo_active = 0; /* it's time to disable the logo now.. */ 585 586 if (t == 0 && b == vc->vc_rows) { 587 if (dir == SM_UP) { 588 topscan = (topscan + (lines << 4)) & 0x3ff; 589 newport_clear_lines(vc->vc_rows - lines, 590 vc->vc_rows - 1, 591 (vc->vc_color & 0xf0) >> 4); 592 } else { 593 topscan = (topscan + (-lines << 4)) & 0x3ff; 594 newport_clear_lines(0, lines - 1, 595 (vc->vc_color & 0xf0) >> 4); 596 } 597 npregs->cset.topscan = (topscan - 1) & 0x3ff; 598 return false; 599 } 600 601 count = (b - t - lines) * vc->vc_cols; 602 if (dir == SM_UP) { 603 x = 0; 604 y = t; 605 s = (unsigned short *) (vc->vc_origin + 606 vc->vc_size_row * (t + lines)); 607 d = (unsigned short *) (vc->vc_origin + 608 vc->vc_size_row * t); 609 while (count--) { 610 chattr = scr_readw(s++); 611 if (chattr != scr_readw(d)) { 612 newport_putc(vc, chattr, y, x); 613 scr_writew(chattr, d); 614 } 615 d++; 616 if (++x == vc->vc_cols) { 617 x = 0; 618 y++; 619 } 620 } 621 d = (unsigned short *) (vc->vc_origin + 622 vc->vc_size_row * (b - lines)); 623 x = 0; 624 y = b - lines; 625 for (count = 0; count < (lines * vc->vc_cols); count++) { 626 if (scr_readw(d) != vc->vc_video_erase_char) { 627 newport_putc(vc, vc->vc_video_erase_char, 628 y, x); 629 scr_writew(vc->vc_video_erase_char, d); 630 } 631 d++; 632 if (++x == vc->vc_cols) { 633 x = 0; 634 y++; 635 } 636 } 637 } else { 638 x = vc->vc_cols - 1; 639 y = b - 1; 640 s = (unsigned short *) (vc->vc_origin + 641 vc->vc_size_row * (b - lines) - 2); 642 d = (unsigned short *) (vc->vc_origin + 643 vc->vc_size_row * b - 2); 644 while (count--) { 645 chattr = scr_readw(s--); 646 if (chattr != scr_readw(d)) { 647 newport_putc(vc, chattr, y, x); 648 scr_writew(chattr, d); 649 } 650 d--; 651 if (x-- == 0) { 652 x = vc->vc_cols - 1; 653 y--; 654 } 655 } 656 d = (unsigned short *) (vc->vc_origin + 657 vc->vc_size_row * t); 658 x = 0; 659 y = t; 660 for (count = 0; count < (lines * vc->vc_cols); count++) { 661 if (scr_readw(d) != vc->vc_video_erase_char) { 662 newport_putc(vc, vc->vc_video_erase_char, 663 y, x); 664 scr_writew(vc->vc_video_erase_char, d); 665 } 666 d++; 667 if (++x == vc->vc_cols) { 668 x = 0; 669 y++; 670 } 671 } 672 } 673 return true; 674 } 675 676 static int newport_set_origin(struct vc_data *vc) 677 { 678 return 0; 679 } 680 681 static void newport_save_screen(struct vc_data *vc) { } 682 683 static const struct consw newport_con = { 684 .owner = THIS_MODULE, 685 .con_startup = newport_startup, 686 .con_init = newport_init, 687 .con_deinit = newport_deinit, 688 .con_clear = newport_clear, 689 .con_putc = newport_putc, 690 .con_putcs = newport_putcs, 691 .con_cursor = newport_cursor, 692 .con_scroll = newport_scroll, 693 .con_switch = newport_switch, 694 .con_blank = newport_blank, 695 .con_font_set = newport_font_set, 696 .con_font_default = newport_font_default, 697 .con_set_origin = newport_set_origin, 698 .con_save_screen = newport_save_screen 699 }; 700 701 static int newport_probe(struct gio_device *dev, 702 const struct gio_device_id *id) 703 { 704 unsigned long newport_addr; 705 int err; 706 707 if (!dev->resource.start) 708 return -EINVAL; 709 710 if (npregs) 711 return -EBUSY; /* we only support one Newport as console */ 712 713 newport_addr = dev->resource.start + 0xF0000; 714 if (!request_mem_region(newport_addr, 0x10000, "Newport")) 715 return -ENODEV; 716 717 npregs = (struct newport_regs *)/* ioremap cannot fail */ 718 ioremap(newport_addr, sizeof(struct newport_regs)); 719 console_lock(); 720 err = do_take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1); 721 console_unlock(); 722 return err; 723 } 724 725 static void newport_remove(struct gio_device *dev) 726 { 727 give_up_console(&newport_con); 728 iounmap((void *)npregs); 729 } 730 731 static struct gio_device_id newport_ids[] = { 732 { .id = 0x7e }, 733 { .id = 0xff } 734 }; 735 736 MODULE_ALIAS("gio:7e"); 737 738 static struct gio_driver newport_driver = { 739 .name = "newport", 740 .id_table = newport_ids, 741 .probe = newport_probe, 742 .remove = newport_remove, 743 }; 744 745 int __init newport_console_init(void) 746 { 747 return gio_register_driver(&newport_driver); 748 } 749 750 void __exit newport_console_exit(void) 751 { 752 gio_unregister_driver(&newport_driver); 753 } 754 755 module_init(newport_console_init); 756 module_exit(newport_console_exit); 757 758 MODULE_LICENSE("GPL"); 759