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/gio_device.h> 28 29 #include <video/newport.h> 30 31 #include <linux/linux_logo.h> 32 #include <linux/font.h> 33 34 #define NEWPORT_LEN 0x10000 35 36 #define FONT_DATA ((unsigned char *)font_vga_8x16.data) 37 38 static unsigned char *font_data[MAX_NR_CONSOLES]; 39 40 static struct newport_regs *npregs; 41 static unsigned long newport_addr; 42 43 static int logo_active; 44 static int topscan; 45 static int xcurs_correction = 29; 46 static int newport_xsize; 47 static int newport_ysize; 48 static int newport_has_init; 49 50 static int newport_set_def_font(int unit, struct console_font *op); 51 52 #define BMASK(c) (c << 24) 53 54 #define RENDER(regs, cp) do { \ 55 (regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \ 56 (regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \ 57 (regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \ 58 (regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \ 59 (regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \ 60 (regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \ 61 (regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \ 62 (regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \ 63 } while(0) 64 65 #define TESTVAL 0xdeadbeef 66 #define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11) 67 68 static inline void newport_render_background(int xstart, int ystart, 69 int xend, int yend, int ci) 70 { 71 newport_wait(npregs); 72 npregs->set.wrmask = 0xffffffff; 73 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 74 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 75 | NPORT_DMODE0_STOPY); 76 npregs->set.colori = ci; 77 npregs->set.xystarti = 78 (xstart << 16) | ((ystart + topscan) & 0x3ff); 79 npregs->go.xyendi = 80 ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff); 81 } 82 83 static inline void newport_init_cmap(void) 84 { 85 unsigned short i; 86 87 for (i = 0; i < 16; i++) { 88 newport_bfwait(npregs); 89 newport_cmap_setaddr(npregs, color_table[i]); 90 newport_cmap_setrgb(npregs, 91 default_red[i], 92 default_grn[i], default_blu[i]); 93 } 94 } 95 96 static const struct linux_logo *newport_show_logo(void) 97 { 98 #ifdef CONFIG_LOGO_SGI_CLUT224 99 const struct linux_logo *logo = fb_find_logo(8); 100 const unsigned char *clut; 101 const unsigned char *data; 102 unsigned long i; 103 104 if (!logo) 105 return NULL; 106 clut = logo->clut; 107 data = logo->data; 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; 126 127 return logo; 128 #endif /* CONFIG_LOGO_SGI_CLUT224 */ 129 } 130 131 static inline void newport_clear_screen(int xstart, int ystart, int xend, 132 int yend, int ci) 133 { 134 if (logo_active) 135 return; 136 137 newport_wait(npregs); 138 npregs->set.wrmask = 0xffffffff; 139 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 140 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 141 | NPORT_DMODE0_STOPY); 142 npregs->set.colori = ci; 143 npregs->set.xystarti = (xstart << 16) | ystart; 144 npregs->go.xyendi = (xend << 16) | yend; 145 } 146 147 static inline void newport_clear_lines(int ystart, int yend, int ci) 148 { 149 ystart = ((ystart << 4) + topscan) & 0x3ff; 150 yend = ((yend << 4) + topscan + 15) & 0x3ff; 151 newport_clear_screen(0, ystart, 1280 + 63, yend, ci); 152 } 153 154 static void newport_reset(void) 155 { 156 unsigned short treg; 157 int i; 158 159 newport_wait(npregs); 160 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 161 newport_vc2_set(npregs, VC2_IREG_CONTROL, 162 (treg | VC2_CTRL_EVIDEO)); 163 164 treg = newport_vc2_get(npregs, VC2_IREG_CENTRY); 165 newport_vc2_set(npregs, VC2_IREG_RADDR, treg); 166 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 167 NPORT_DMODE_W2 | VC2_PROTOCOL); 168 for (i = 0; i < 128; i++) { 169 newport_bfwait(npregs); 170 if (i == 92 || i == 94) 171 npregs->set.dcbdata0.byshort.s1 = 0xff00; 172 else 173 npregs->set.dcbdata0.byshort.s1 = 0x0000; 174 } 175 176 newport_init_cmap(); 177 178 /* turn off popup plane */ 179 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 180 XM9_CRS_CONFIG | NPORT_DMODE_W1); 181 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 182 npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL | 183 XM9_CRS_CONFIG | NPORT_DMODE_W1); 184 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 185 186 topscan = 0; 187 npregs->cset.topscan = 0x3ff; 188 npregs->cset.xywin = (4096 << 16) | 4096; 189 190 /* Clear the screen. */ 191 newport_clear_screen(0, 0, 1280 + 63, 1024, 0); 192 } 193 194 /* 195 * calculate the actual screen size by reading 196 * the video timing out of the VC2 197 */ 198 static void newport_get_screensize(void) 199 { 200 int i, cols; 201 unsigned short ventry, treg; 202 unsigned short linetable[128]; /* should be enough */ 203 204 ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY); 205 newport_vc2_set(npregs, VC2_IREG_RADDR, ventry); 206 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 207 NPORT_DMODE_W2 | VC2_PROTOCOL); 208 for (i = 0; i < 128; i++) { 209 newport_bfwait(npregs); 210 linetable[i] = npregs->set.dcbdata0.byshort.s1; 211 } 212 213 newport_xsize = newport_ysize = 0; 214 for (i = 0; i < ARRAY_SIZE(linetable) - 1 && linetable[i + 1]; i += 2) { 215 cols = 0; 216 newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]); 217 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 218 NPORT_DMODE_W2 | VC2_PROTOCOL); 219 do { 220 newport_bfwait(npregs); 221 treg = npregs->set.dcbdata0.byshort.s1; 222 if ((treg & 1) == 0) 223 cols += (treg >> 7) & 0xfe; 224 if ((treg & 0x80) == 0) { 225 newport_bfwait(npregs); 226 treg = npregs->set.dcbdata0.byshort.s1; 227 } 228 } while ((treg & 0x8000) == 0); 229 if (cols) { 230 if (cols > newport_xsize) 231 newport_xsize = cols; 232 newport_ysize += linetable[i + 1]; 233 } 234 } 235 printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize); 236 } 237 238 static void newport_get_revisions(void) 239 { 240 unsigned int tmp; 241 unsigned int board_rev; 242 unsigned int rex3_rev; 243 unsigned int vc2_rev; 244 unsigned int cmap_rev; 245 unsigned int xmap9_rev; 246 unsigned int bt445_rev; 247 unsigned int bitplanes; 248 249 rex3_rev = npregs->cset.status & NPORT_STAT_VERS; 250 251 npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL | 252 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 253 tmp = npregs->set.dcbdata0.bybytes.b3; 254 cmap_rev = tmp & 7; 255 board_rev = (tmp >> 4) & 7; 256 bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24; 257 258 npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL | 259 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 260 tmp = npregs->set.dcbdata0.bybytes.b3; 261 if ((tmp & 7) < cmap_rev) 262 cmap_rev = (tmp & 7); 263 264 vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7; 265 266 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 267 XM9_CRS_REVISION | NPORT_DMODE_W1); 268 xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7; 269 270 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 271 BT445_CSR_ADDR_REG | NPORT_DMODE_W1); 272 npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG; 273 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 274 BT445_CSR_REVISION | NPORT_DMODE_W1); 275 bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a; 276 277 #define L(a) (char)('A'+(a)) 278 printk 279 ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n", 280 board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev), 281 L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev)); 282 #undef L 283 284 if (board_rev == 3) /* I don't know all affected revisions */ 285 xcurs_correction = 21; 286 } 287 288 static void newport_exit(void) 289 { 290 int i; 291 292 /* free memory used by user font */ 293 for (i = 0; i < MAX_NR_CONSOLES; i++) 294 newport_set_def_font(i, NULL); 295 } 296 297 /* Can't be __init, do_take_over_console may call it later */ 298 static const char *newport_startup(void) 299 { 300 int i; 301 302 npregs->cset.config = NPORT_CFG_GD0; 303 304 if (newport_wait(npregs)) 305 goto out_unmap; 306 307 npregs->set.xstarti = TESTVAL; 308 if (npregs->set._xstart.word != XSTI_TO_FXSTART(TESTVAL)) 309 goto out_unmap; 310 311 for (i = 0; i < MAX_NR_CONSOLES; i++) 312 font_data[i] = FONT_DATA; 313 314 newport_reset(); 315 newport_get_revisions(); 316 newport_get_screensize(); 317 newport_has_init = 1; 318 319 return "SGI Newport"; 320 321 out_unmap: 322 return NULL; 323 } 324 325 static void newport_init(struct vc_data *vc, int init) 326 { 327 int cols, rows; 328 329 cols = newport_xsize / 8; 330 rows = newport_ysize / 16; 331 vc->vc_can_do_color = 1; 332 if (init) { 333 vc->vc_cols = cols; 334 vc->vc_rows = rows; 335 } else 336 vc_resize(vc, cols, rows); 337 } 338 339 static void newport_deinit(struct vc_data *c) 340 { 341 if (!con_is_bound(&newport_con) && newport_has_init) { 342 newport_exit(); 343 newport_has_init = 0; 344 } 345 } 346 347 static void newport_clear(struct vc_data *vc, int sy, int sx, int height, 348 int width) 349 { 350 int xend = ((sx + width) << 3) - 1; 351 int ystart = ((sy << 4) + topscan) & 0x3ff; 352 int yend = (((sy + height) << 4) + topscan - 1) & 0x3ff; 353 354 if (logo_active) 355 return; 356 357 if (ystart < yend) { 358 newport_clear_screen(sx << 3, ystart, xend, yend, 359 (vc->state.color & 0xf0) >> 4); 360 } else { 361 newport_clear_screen(sx << 3, ystart, xend, 1023, 362 (vc->state.color & 0xf0) >> 4); 363 newport_clear_screen(sx << 3, 0, xend, yend, 364 (vc->state.color & 0xf0) >> 4); 365 } 366 } 367 368 static void newport_putc(struct vc_data *vc, int charattr, int ypos, 369 int xpos) 370 { 371 unsigned char *p; 372 373 p = &font_data[vc->vc_num][(charattr & 0xff) << 4]; 374 charattr = (charattr >> 8) & 0xff; 375 xpos <<= 3; 376 ypos <<= 4; 377 378 newport_render_background(xpos, ypos, xpos, ypos, 379 (charattr & 0xf0) >> 4); 380 381 /* Set the color and drawing mode. */ 382 newport_wait(npregs); 383 npregs->set.colori = charattr & 0xf; 384 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 385 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 386 NPORT_DMODE0_L32); 387 388 /* Set coordinates for bitmap operation. */ 389 npregs->set.xystarti = (xpos << 16) | ((ypos + topscan) & 0x3ff); 390 npregs->set.xyendi = ((xpos + 7) << 16); 391 newport_wait(npregs); 392 393 /* Go, baby, go... */ 394 RENDER(npregs, p); 395 } 396 397 static void newport_putcs(struct vc_data *vc, const unsigned short *s, 398 int count, int ypos, int xpos) 399 { 400 int i; 401 int charattr; 402 unsigned char *p; 403 404 charattr = (scr_readw(s) >> 8) & 0xff; 405 406 xpos <<= 3; 407 ypos <<= 4; 408 409 if (!logo_active) 410 /* Clear the area behing the string */ 411 newport_render_background(xpos, ypos, 412 xpos + ((count - 1) << 3), ypos, 413 (charattr & 0xf0) >> 4); 414 415 newport_wait(npregs); 416 417 /* Set the color and drawing mode. */ 418 npregs->set.colori = charattr & 0xf; 419 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 420 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 421 NPORT_DMODE0_L32); 422 423 for (i = 0; i < count; i++, xpos += 8) { 424 p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4]; 425 426 newport_wait(npregs); 427 428 /* Set coordinates for bitmap operation. */ 429 npregs->set.xystarti = 430 (xpos << 16) | ((ypos + topscan) & 0x3ff); 431 npregs->set.xyendi = ((xpos + 7) << 16); 432 433 /* Go, baby, go... */ 434 RENDER(npregs, p); 435 } 436 } 437 438 static void newport_cursor(struct vc_data *vc, int mode) 439 { 440 unsigned short treg; 441 int xcurs, ycurs; 442 443 switch (mode) { 444 case CM_ERASE: 445 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 446 newport_vc2_set(npregs, VC2_IREG_CONTROL, 447 (treg & ~(VC2_CTRL_ECDISP))); 448 break; 449 450 case CM_MOVE: 451 case CM_DRAW: 452 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 453 newport_vc2_set(npregs, VC2_IREG_CONTROL, 454 (treg | VC2_CTRL_ECDISP)); 455 xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2; 456 ycurs = ((xcurs / vc->vc_cols) << 4) + 31; 457 xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction; 458 newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs); 459 newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs); 460 } 461 } 462 463 static int newport_switch(struct vc_data *vc) 464 { 465 static int logo_drawn = 0; 466 467 topscan = 0; 468 npregs->cset.topscan = 0x3ff; 469 470 if (!logo_drawn) { 471 if (newport_show_logo()) { 472 logo_drawn = 1; 473 logo_active = 1; 474 } 475 } 476 477 return 1; 478 } 479 480 static int newport_blank(struct vc_data *c, int blank, int mode_switch) 481 { 482 unsigned short treg; 483 484 if (blank == 0) { 485 /* unblank console */ 486 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 487 newport_vc2_set(npregs, VC2_IREG_CONTROL, 488 (treg | VC2_CTRL_EDISP)); 489 } else { 490 /* blank console */ 491 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 492 newport_vc2_set(npregs, VC2_IREG_CONTROL, 493 (treg & ~(VC2_CTRL_EDISP))); 494 } 495 return 1; 496 } 497 498 static int newport_set_font(int unit, struct console_font *op) 499 { 500 int w = op->width; 501 int h = op->height; 502 int size = h * op->charcount; 503 int i; 504 unsigned char *new_data, *data = op->data, *p; 505 506 /* ladis: when I grow up, there will be a day... and more sizes will 507 * be supported ;-) */ 508 if ((w != 8) || (h != 16) 509 || (op->charcount != 256 && op->charcount != 512)) 510 return -EINVAL; 511 512 if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, 513 GFP_USER))) return -ENOMEM; 514 515 new_data += FONT_EXTRA_WORDS * sizeof(int); 516 FNTSIZE(new_data) = size; 517 FNTCHARCNT(new_data) = op->charcount; 518 REFCOUNT(new_data) = 0; /* usage counter */ 519 FNTSUM(new_data) = 0; 520 521 p = new_data; 522 for (i = 0; i < op->charcount; i++) { 523 memcpy(p, data, h); 524 data += 32; 525 p += h; 526 } 527 528 /* check if font is already used by other console */ 529 for (i = 0; i < MAX_NR_CONSOLES; i++) { 530 if (font_data[i] != FONT_DATA 531 && FNTSIZE(font_data[i]) == size 532 && !memcmp(font_data[i], new_data, size)) { 533 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 534 /* current font is the same as the new one */ 535 if (i == unit) 536 return 0; 537 new_data = font_data[i]; 538 break; 539 } 540 } 541 /* old font is user font */ 542 if (font_data[unit] != FONT_DATA) { 543 if (--REFCOUNT(font_data[unit]) == 0) 544 kfree(font_data[unit] - 545 FONT_EXTRA_WORDS * sizeof(int)); 546 } 547 REFCOUNT(new_data)++; 548 font_data[unit] = new_data; 549 550 return 0; 551 } 552 553 static int newport_set_def_font(int unit, struct console_font *op) 554 { 555 if (font_data[unit] != FONT_DATA) { 556 if (--REFCOUNT(font_data[unit]) == 0) 557 kfree(font_data[unit] - 558 FONT_EXTRA_WORDS * sizeof(int)); 559 font_data[unit] = FONT_DATA; 560 } 561 562 return 0; 563 } 564 565 static int newport_font_default(struct vc_data *vc, struct console_font *op, char *name) 566 { 567 return newport_set_def_font(vc->vc_num, op); 568 } 569 570 static int newport_font_set(struct vc_data *vc, struct console_font *font, unsigned flags) 571 { 572 return newport_set_font(vc->vc_num, font); 573 } 574 575 static bool newport_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 576 enum con_scroll dir, unsigned int lines) 577 { 578 int count, x, y; 579 unsigned short *s, *d; 580 unsigned short chattr; 581 582 logo_active = 0; /* it's time to disable the logo now.. */ 583 584 if (t == 0 && b == vc->vc_rows) { 585 if (dir == SM_UP) { 586 topscan = (topscan + (lines << 4)) & 0x3ff; 587 newport_clear_lines(vc->vc_rows - lines, 588 vc->vc_rows - 1, 589 (vc->state.color & 0xf0) >> 4); 590 } else { 591 topscan = (topscan + (-lines << 4)) & 0x3ff; 592 newport_clear_lines(0, lines - 1, 593 (vc->state.color & 0xf0) >> 4); 594 } 595 npregs->cset.topscan = (topscan - 1) & 0x3ff; 596 return false; 597 } 598 599 count = (b - t - lines) * vc->vc_cols; 600 if (dir == SM_UP) { 601 x = 0; 602 y = t; 603 s = (unsigned short *) (vc->vc_origin + 604 vc->vc_size_row * (t + lines)); 605 d = (unsigned short *) (vc->vc_origin + 606 vc->vc_size_row * t); 607 while (count--) { 608 chattr = scr_readw(s++); 609 if (chattr != scr_readw(d)) { 610 newport_putc(vc, chattr, y, x); 611 scr_writew(chattr, d); 612 } 613 d++; 614 if (++x == vc->vc_cols) { 615 x = 0; 616 y++; 617 } 618 } 619 d = (unsigned short *) (vc->vc_origin + 620 vc->vc_size_row * (b - lines)); 621 x = 0; 622 y = b - lines; 623 for (count = 0; count < (lines * vc->vc_cols); count++) { 624 if (scr_readw(d) != vc->vc_video_erase_char) { 625 newport_putc(vc, vc->vc_video_erase_char, 626 y, x); 627 scr_writew(vc->vc_video_erase_char, d); 628 } 629 d++; 630 if (++x == vc->vc_cols) { 631 x = 0; 632 y++; 633 } 634 } 635 } else { 636 x = vc->vc_cols - 1; 637 y = b - 1; 638 s = (unsigned short *) (vc->vc_origin + 639 vc->vc_size_row * (b - lines) - 2); 640 d = (unsigned short *) (vc->vc_origin + 641 vc->vc_size_row * b - 2); 642 while (count--) { 643 chattr = scr_readw(s--); 644 if (chattr != scr_readw(d)) { 645 newport_putc(vc, chattr, y, x); 646 scr_writew(chattr, d); 647 } 648 d--; 649 if (x-- == 0) { 650 x = vc->vc_cols - 1; 651 y--; 652 } 653 } 654 d = (unsigned short *) (vc->vc_origin + 655 vc->vc_size_row * t); 656 x = 0; 657 y = t; 658 for (count = 0; count < (lines * vc->vc_cols); count++) { 659 if (scr_readw(d) != vc->vc_video_erase_char) { 660 newport_putc(vc, vc->vc_video_erase_char, 661 y, x); 662 scr_writew(vc->vc_video_erase_char, d); 663 } 664 d++; 665 if (++x == vc->vc_cols) { 666 x = 0; 667 y++; 668 } 669 } 670 } 671 return true; 672 } 673 674 static int newport_set_origin(struct vc_data *vc) 675 { 676 return 0; 677 } 678 679 static void newport_save_screen(struct vc_data *vc) { } 680 681 const struct consw newport_con = { 682 .owner = THIS_MODULE, 683 .con_startup = newport_startup, 684 .con_init = newport_init, 685 .con_deinit = newport_deinit, 686 .con_clear = newport_clear, 687 .con_putc = newport_putc, 688 .con_putcs = newport_putcs, 689 .con_cursor = newport_cursor, 690 .con_scroll = newport_scroll, 691 .con_switch = newport_switch, 692 .con_blank = newport_blank, 693 .con_font_set = newport_font_set, 694 .con_font_default = newport_font_default, 695 .con_set_origin = newport_set_origin, 696 .con_save_screen = newport_save_screen 697 }; 698 699 static int newport_probe(struct gio_device *dev, 700 const struct gio_device_id *id) 701 { 702 int err; 703 704 if (!dev->resource.start) 705 return -EINVAL; 706 707 if (npregs) 708 return -EBUSY; /* we only support one Newport as console */ 709 710 newport_addr = dev->resource.start + 0xF0000; 711 if (!request_mem_region(newport_addr, NEWPORT_LEN, "Newport")) 712 return -ENODEV; 713 714 npregs = (struct newport_regs *)/* ioremap cannot fail */ 715 ioremap(newport_addr, sizeof(struct newport_regs)); 716 console_lock(); 717 err = do_take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1); 718 console_unlock(); 719 720 if (err) { 721 iounmap((void *)npregs); 722 release_mem_region(newport_addr, NEWPORT_LEN); 723 } 724 return err; 725 } 726 727 static void newport_remove(struct gio_device *dev) 728 { 729 give_up_console(&newport_con); 730 iounmap((void *)npregs); 731 release_mem_region(newport_addr, NEWPORT_LEN); 732 } 733 734 static struct gio_device_id newport_ids[] = { 735 { .id = 0x7e }, 736 { .id = 0xff } 737 }; 738 739 MODULE_ALIAS("gio:7e"); 740 741 static struct gio_driver newport_driver = { 742 .name = "newport", 743 .id_table = newport_ids, 744 .probe = newport_probe, 745 .remove = newport_remove, 746 }; 747 748 int __init newport_console_init(void) 749 { 750 return gio_register_driver(&newport_driver); 751 } 752 753 void __exit newport_console_exit(void) 754 { 755 gio_unregister_driver(&newport_driver); 756 } 757 758 module_init(newport_console_init); 759 module_exit(newport_console_exit); 760 761 MODULE_LICENSE("GPL"); 762