1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * newport_con.c: Abscon for newport hardware 4 * 5 * (C) 1998 Thomas Bogendoerfer (tsbogend@alpha.franken.de) 6 * (C) 1999 Ulf Carlsson (ulfc@thepuffingruop.com) 7 * 8 * This driver is based on sgicons.c and cons_newport. 9 * 10 * Copyright (C) 1996 David S. Miller (davem@davemloft.net) 11 * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx) 12 */ 13 #include <linux/init.h> 14 #include <linux/kernel.h> 15 #include <linux/errno.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/io.h> 25 #include <linux/uaccess.h> 26 #include <asm/page.h> 27 #include <asm/pgtable.h> 28 #include <asm/gio_device.h> 29 30 #include <video/newport.h> 31 32 #include <linux/linux_logo.h> 33 #include <linux/font.h> 34 35 #define FONT_DATA ((unsigned char *)font_vga_8x16.data) 36 37 /* borrowed from fbcon.c */ 38 #define REFCOUNT(fd) (((int *)(fd))[-1]) 39 #define FNTSIZE(fd) (((int *)(fd))[-2]) 40 #define FNTCHARCNT(fd) (((int *)(fd))[-3]) 41 #define FONT_EXTRA_WORDS 3 42 43 static unsigned char *font_data[MAX_NR_CONSOLES]; 44 45 static struct newport_regs *npregs; 46 47 static int logo_active; 48 static int topscan; 49 static int xcurs_correction = 29; 50 static int newport_xsize; 51 static int newport_ysize; 52 static int newport_has_init; 53 54 static int newport_set_def_font(int unit, struct console_font *op); 55 56 #define BMASK(c) (c << 24) 57 58 #define RENDER(regs, cp) do { \ 59 (regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \ 60 (regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \ 61 (regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \ 62 (regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \ 63 (regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \ 64 (regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \ 65 (regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \ 66 (regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \ 67 } while(0) 68 69 #define TESTVAL 0xdeadbeef 70 #define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11) 71 72 static inline void newport_render_background(int xstart, int ystart, 73 int xend, int yend, int ci) 74 { 75 newport_wait(npregs); 76 npregs->set.wrmask = 0xffffffff; 77 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 78 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 79 | NPORT_DMODE0_STOPY); 80 npregs->set.colori = ci; 81 npregs->set.xystarti = 82 (xstart << 16) | ((ystart + topscan) & 0x3ff); 83 npregs->go.xyendi = 84 ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff); 85 } 86 87 static inline void newport_init_cmap(void) 88 { 89 unsigned short i; 90 91 for (i = 0; i < 16; i++) { 92 newport_bfwait(npregs); 93 newport_cmap_setaddr(npregs, color_table[i]); 94 newport_cmap_setrgb(npregs, 95 default_red[i], 96 default_grn[i], default_blu[i]); 97 } 98 } 99 100 static const struct linux_logo *newport_show_logo(void) 101 { 102 #ifdef CONFIG_LOGO_SGI_CLUT224 103 const struct linux_logo *logo = fb_find_logo(8); 104 const unsigned char *clut; 105 const unsigned char *data; 106 unsigned long i; 107 108 if (!logo) 109 return NULL; 110 clut = logo->clut; 111 data = logo->data; 112 113 for (i = 0; i < logo->clutsize; i++) { 114 newport_bfwait(npregs); 115 newport_cmap_setaddr(npregs, i + 0x20); 116 newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]); 117 clut += 3; 118 } 119 120 newport_wait(npregs); 121 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 122 NPORT_DMODE0_CHOST); 123 124 npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0); 125 npregs->set.xyendi = ((newport_xsize - 1) << 16); 126 newport_wait(npregs); 127 128 for (i = 0; i < logo->width*logo->height; i++) 129 npregs->go.hostrw0 = *data++ << 24; 130 131 return logo; 132 #endif /* CONFIG_LOGO_SGI_CLUT224 */ 133 } 134 135 static inline void newport_clear_screen(int xstart, int ystart, int xend, 136 int yend, int ci) 137 { 138 if (logo_active) 139 return; 140 141 newport_wait(npregs); 142 npregs->set.wrmask = 0xffffffff; 143 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 144 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 145 | NPORT_DMODE0_STOPY); 146 npregs->set.colori = ci; 147 npregs->set.xystarti = (xstart << 16) | ystart; 148 npregs->go.xyendi = (xend << 16) | yend; 149 } 150 151 static inline void newport_clear_lines(int ystart, int yend, int ci) 152 { 153 ystart = ((ystart << 4) + topscan) & 0x3ff; 154 yend = ((yend << 4) + topscan + 15) & 0x3ff; 155 newport_clear_screen(0, ystart, 1280 + 63, yend, ci); 156 } 157 158 static void newport_reset(void) 159 { 160 unsigned short treg; 161 int i; 162 163 newport_wait(npregs); 164 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 165 newport_vc2_set(npregs, VC2_IREG_CONTROL, 166 (treg | VC2_CTRL_EVIDEO)); 167 168 treg = newport_vc2_get(npregs, VC2_IREG_CENTRY); 169 newport_vc2_set(npregs, VC2_IREG_RADDR, treg); 170 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 171 NPORT_DMODE_W2 | VC2_PROTOCOL); 172 for (i = 0; i < 128; i++) { 173 newport_bfwait(npregs); 174 if (i == 92 || i == 94) 175 npregs->set.dcbdata0.byshort.s1 = 0xff00; 176 else 177 npregs->set.dcbdata0.byshort.s1 = 0x0000; 178 } 179 180 newport_init_cmap(); 181 182 /* turn off popup plane */ 183 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 184 XM9_CRS_CONFIG | NPORT_DMODE_W1); 185 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 186 npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL | 187 XM9_CRS_CONFIG | NPORT_DMODE_W1); 188 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 189 190 topscan = 0; 191 npregs->cset.topscan = 0x3ff; 192 npregs->cset.xywin = (4096 << 16) | 4096; 193 194 /* Clear the screen. */ 195 newport_clear_screen(0, 0, 1280 + 63, 1024, 0); 196 } 197 198 /* 199 * calculate the actual screen size by reading 200 * the video timing out of the VC2 201 */ 202 static void newport_get_screensize(void) 203 { 204 int i, cols; 205 unsigned short ventry, treg; 206 unsigned short linetable[128]; /* should be enough */ 207 208 ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY); 209 newport_vc2_set(npregs, VC2_IREG_RADDR, ventry); 210 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 211 NPORT_DMODE_W2 | VC2_PROTOCOL); 212 for (i = 0; i < 128; i++) { 213 newport_bfwait(npregs); 214 linetable[i] = npregs->set.dcbdata0.byshort.s1; 215 } 216 217 newport_xsize = newport_ysize = 0; 218 for (i = 0; i < ARRAY_SIZE(linetable) - 1 && linetable[i + 1]; i += 2) { 219 cols = 0; 220 newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]); 221 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 222 NPORT_DMODE_W2 | VC2_PROTOCOL); 223 do { 224 newport_bfwait(npregs); 225 treg = npregs->set.dcbdata0.byshort.s1; 226 if ((treg & 1) == 0) 227 cols += (treg >> 7) & 0xfe; 228 if ((treg & 0x80) == 0) { 229 newport_bfwait(npregs); 230 treg = npregs->set.dcbdata0.byshort.s1; 231 } 232 } while ((treg & 0x8000) == 0); 233 if (cols) { 234 if (cols > newport_xsize) 235 newport_xsize = cols; 236 newport_ysize += linetable[i + 1]; 237 } 238 } 239 printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize); 240 } 241 242 static void newport_get_revisions(void) 243 { 244 unsigned int tmp; 245 unsigned int board_rev; 246 unsigned int rex3_rev; 247 unsigned int vc2_rev; 248 unsigned int cmap_rev; 249 unsigned int xmap9_rev; 250 unsigned int bt445_rev; 251 unsigned int bitplanes; 252 253 rex3_rev = npregs->cset.status & NPORT_STAT_VERS; 254 255 npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL | 256 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 257 tmp = npregs->set.dcbdata0.bybytes.b3; 258 cmap_rev = tmp & 7; 259 board_rev = (tmp >> 4) & 7; 260 bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24; 261 262 npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL | 263 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 264 tmp = npregs->set.dcbdata0.bybytes.b3; 265 if ((tmp & 7) < cmap_rev) 266 cmap_rev = (tmp & 7); 267 268 vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7; 269 270 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 271 XM9_CRS_REVISION | NPORT_DMODE_W1); 272 xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7; 273 274 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 275 BT445_CSR_ADDR_REG | NPORT_DMODE_W1); 276 npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG; 277 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 278 BT445_CSR_REVISION | NPORT_DMODE_W1); 279 bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a; 280 281 #define L(a) (char)('A'+(a)) 282 printk 283 ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n", 284 board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev), 285 L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev)); 286 #undef L 287 288 if (board_rev == 3) /* I don't know all affected revisions */ 289 xcurs_correction = 21; 290 } 291 292 static void newport_exit(void) 293 { 294 int i; 295 296 /* free memory used by user font */ 297 for (i = 0; i < MAX_NR_CONSOLES; i++) 298 newport_set_def_font(i, NULL); 299 } 300 301 /* Can't be __init, do_take_over_console may call it later */ 302 static const char *newport_startup(void) 303 { 304 int i; 305 306 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 int cols, rows; 332 333 cols = newport_xsize / 8; 334 rows = newport_ysize / 16; 335 vc->vc_can_do_color = 1; 336 if (init) { 337 vc->vc_cols = cols; 338 vc->vc_rows = rows; 339 } else 340 vc_resize(vc, cols, rows); 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 bool newport_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 579 enum con_scroll dir, unsigned int lines) 580 { 581 int count, x, y; 582 unsigned short *s, *d; 583 unsigned short chattr; 584 585 logo_active = 0; /* it's time to disable the logo now.. */ 586 587 if (t == 0 && b == vc->vc_rows) { 588 if (dir == SM_UP) { 589 topscan = (topscan + (lines << 4)) & 0x3ff; 590 newport_clear_lines(vc->vc_rows - lines, 591 vc->vc_rows - 1, 592 (vc->vc_color & 0xf0) >> 4); 593 } else { 594 topscan = (topscan + (-lines << 4)) & 0x3ff; 595 newport_clear_lines(0, lines - 1, 596 (vc->vc_color & 0xf0) >> 4); 597 } 598 npregs->cset.topscan = (topscan - 1) & 0x3ff; 599 return false; 600 } 601 602 count = (b - t - lines) * vc->vc_cols; 603 if (dir == SM_UP) { 604 x = 0; 605 y = t; 606 s = (unsigned short *) (vc->vc_origin + 607 vc->vc_size_row * (t + lines)); 608 d = (unsigned short *) (vc->vc_origin + 609 vc->vc_size_row * t); 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 == vc->vc_cols) { 618 x = 0; 619 y++; 620 } 621 } 622 d = (unsigned short *) (vc->vc_origin + 623 vc->vc_size_row * (b - lines)); 624 x = 0; 625 y = b - lines; 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 } else { 639 x = vc->vc_cols - 1; 640 y = b - 1; 641 s = (unsigned short *) (vc->vc_origin + 642 vc->vc_size_row * (b - lines) - 2); 643 d = (unsigned short *) (vc->vc_origin + 644 vc->vc_size_row * b - 2); 645 while (count--) { 646 chattr = scr_readw(s--); 647 if (chattr != scr_readw(d)) { 648 newport_putc(vc, chattr, y, x); 649 scr_writew(chattr, d); 650 } 651 d--; 652 if (x-- == 0) { 653 x = vc->vc_cols - 1; 654 y--; 655 } 656 } 657 d = (unsigned short *) (vc->vc_origin + 658 vc->vc_size_row * t); 659 x = 0; 660 y = t; 661 for (count = 0; count < (lines * vc->vc_cols); count++) { 662 if (scr_readw(d) != vc->vc_video_erase_char) { 663 newport_putc(vc, vc->vc_video_erase_char, 664 y, x); 665 scr_writew(vc->vc_video_erase_char, d); 666 } 667 d++; 668 if (++x == vc->vc_cols) { 669 x = 0; 670 y++; 671 } 672 } 673 } 674 return true; 675 } 676 677 static int newport_set_origin(struct vc_data *vc) 678 { 679 return 0; 680 } 681 682 static void newport_save_screen(struct vc_data *vc) { } 683 684 const struct consw newport_con = { 685 .owner = THIS_MODULE, 686 .con_startup = newport_startup, 687 .con_init = newport_init, 688 .con_deinit = newport_deinit, 689 .con_clear = newport_clear, 690 .con_putc = newport_putc, 691 .con_putcs = newport_putcs, 692 .con_cursor = newport_cursor, 693 .con_scroll = newport_scroll, 694 .con_switch = newport_switch, 695 .con_blank = newport_blank, 696 .con_font_set = newport_font_set, 697 .con_font_default = newport_font_default, 698 .con_set_origin = newport_set_origin, 699 .con_save_screen = newport_save_screen 700 }; 701 702 static int newport_probe(struct gio_device *dev, 703 const struct gio_device_id *id) 704 { 705 unsigned long newport_addr; 706 int err; 707 708 if (!dev->resource.start) 709 return -EINVAL; 710 711 if (npregs) 712 return -EBUSY; /* we only support one Newport as console */ 713 714 newport_addr = dev->resource.start + 0xF0000; 715 if (!request_mem_region(newport_addr, 0x10000, "Newport")) 716 return -ENODEV; 717 718 npregs = (struct newport_regs *)/* ioremap cannot fail */ 719 ioremap(newport_addr, sizeof(struct newport_regs)); 720 console_lock(); 721 err = do_take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1); 722 console_unlock(); 723 return err; 724 } 725 726 static void newport_remove(struct gio_device *dev) 727 { 728 give_up_console(&newport_con); 729 iounmap((void *)npregs); 730 } 731 732 static struct gio_device_id newport_ids[] = { 733 { .id = 0x7e }, 734 { .id = 0xff } 735 }; 736 737 MODULE_ALIAS("gio:7e"); 738 739 static struct gio_driver newport_driver = { 740 .name = "newport", 741 .id_table = newport_ids, 742 .probe = newport_probe, 743 .remove = newport_remove, 744 }; 745 746 int __init newport_console_init(void) 747 { 748 return gio_register_driver(&newport_driver); 749 } 750 751 void __exit newport_console_exit(void) 752 { 753 gio_unregister_driver(&newport_driver); 754 } 755 756 module_init(newport_console_init); 757 module_exit(newport_console_exit); 758 759 MODULE_LICENSE("GPL"); 760