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 /* 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 static unsigned long newport_addr; 48 49 static int logo_active; 50 static int topscan; 51 static int xcurs_correction = 29; 52 static int newport_xsize; 53 static int newport_ysize; 54 static int newport_has_init; 55 56 static int newport_set_def_font(int unit, struct console_font *op); 57 58 #define BMASK(c) (c << 24) 59 60 #define RENDER(regs, cp) do { \ 61 (regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \ 62 (regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \ 63 (regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \ 64 (regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \ 65 (regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \ 66 (regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \ 67 (regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \ 68 (regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \ 69 } while(0) 70 71 #define TESTVAL 0xdeadbeef 72 #define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11) 73 74 static inline void newport_render_background(int xstart, int ystart, 75 int xend, int yend, int ci) 76 { 77 newport_wait(npregs); 78 npregs->set.wrmask = 0xffffffff; 79 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 80 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 81 | NPORT_DMODE0_STOPY); 82 npregs->set.colori = ci; 83 npregs->set.xystarti = 84 (xstart << 16) | ((ystart + topscan) & 0x3ff); 85 npregs->go.xyendi = 86 ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff); 87 } 88 89 static inline void newport_init_cmap(void) 90 { 91 unsigned short i; 92 93 for (i = 0; i < 16; i++) { 94 newport_bfwait(npregs); 95 newport_cmap_setaddr(npregs, color_table[i]); 96 newport_cmap_setrgb(npregs, 97 default_red[i], 98 default_grn[i], default_blu[i]); 99 } 100 } 101 102 static const struct linux_logo *newport_show_logo(void) 103 { 104 #ifdef CONFIG_LOGO_SGI_CLUT224 105 const struct linux_logo *logo = fb_find_logo(8); 106 const unsigned char *clut; 107 const unsigned char *data; 108 unsigned long i; 109 110 if (!logo) 111 return NULL; 112 clut = logo->clut; 113 data = logo->data; 114 115 for (i = 0; i < logo->clutsize; i++) { 116 newport_bfwait(npregs); 117 newport_cmap_setaddr(npregs, i + 0x20); 118 newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]); 119 clut += 3; 120 } 121 122 newport_wait(npregs); 123 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 124 NPORT_DMODE0_CHOST); 125 126 npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0); 127 npregs->set.xyendi = ((newport_xsize - 1) << 16); 128 newport_wait(npregs); 129 130 for (i = 0; i < logo->width*logo->height; i++) 131 npregs->go.hostrw0 = *data++ << 24; 132 133 return logo; 134 #endif /* CONFIG_LOGO_SGI_CLUT224 */ 135 } 136 137 static inline void newport_clear_screen(int xstart, int ystart, int xend, 138 int yend, int ci) 139 { 140 if (logo_active) 141 return; 142 143 newport_wait(npregs); 144 npregs->set.wrmask = 0xffffffff; 145 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 146 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 147 | NPORT_DMODE0_STOPY); 148 npregs->set.colori = ci; 149 npregs->set.xystarti = (xstart << 16) | ystart; 150 npregs->go.xyendi = (xend << 16) | yend; 151 } 152 153 static inline void newport_clear_lines(int ystart, int yend, int ci) 154 { 155 ystart = ((ystart << 4) + topscan) & 0x3ff; 156 yend = ((yend << 4) + topscan + 15) & 0x3ff; 157 newport_clear_screen(0, ystart, 1280 + 63, yend, ci); 158 } 159 160 static void newport_reset(void) 161 { 162 unsigned short treg; 163 int i; 164 165 newport_wait(npregs); 166 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 167 newport_vc2_set(npregs, VC2_IREG_CONTROL, 168 (treg | VC2_CTRL_EVIDEO)); 169 170 treg = newport_vc2_get(npregs, VC2_IREG_CENTRY); 171 newport_vc2_set(npregs, VC2_IREG_RADDR, treg); 172 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 173 NPORT_DMODE_W2 | VC2_PROTOCOL); 174 for (i = 0; i < 128; i++) { 175 newport_bfwait(npregs); 176 if (i == 92 || i == 94) 177 npregs->set.dcbdata0.byshort.s1 = 0xff00; 178 else 179 npregs->set.dcbdata0.byshort.s1 = 0x0000; 180 } 181 182 newport_init_cmap(); 183 184 /* turn off popup plane */ 185 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 186 XM9_CRS_CONFIG | NPORT_DMODE_W1); 187 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 188 npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL | 189 XM9_CRS_CONFIG | NPORT_DMODE_W1); 190 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 191 192 topscan = 0; 193 npregs->cset.topscan = 0x3ff; 194 npregs->cset.xywin = (4096 << 16) | 4096; 195 196 /* Clear the screen. */ 197 newport_clear_screen(0, 0, 1280 + 63, 1024, 0); 198 } 199 200 /* 201 * calculate the actual screen size by reading 202 * the video timing out of the VC2 203 */ 204 static void newport_get_screensize(void) 205 { 206 int i, cols; 207 unsigned short ventry, treg; 208 unsigned short linetable[128]; /* should be enough */ 209 210 ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY); 211 newport_vc2_set(npregs, VC2_IREG_RADDR, ventry); 212 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 213 NPORT_DMODE_W2 | VC2_PROTOCOL); 214 for (i = 0; i < 128; i++) { 215 newport_bfwait(npregs); 216 linetable[i] = npregs->set.dcbdata0.byshort.s1; 217 } 218 219 newport_xsize = newport_ysize = 0; 220 for (i = 0; i < ARRAY_SIZE(linetable) - 1 && linetable[i + 1]; i += 2) { 221 cols = 0; 222 newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]); 223 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 224 NPORT_DMODE_W2 | VC2_PROTOCOL); 225 do { 226 newport_bfwait(npregs); 227 treg = npregs->set.dcbdata0.byshort.s1; 228 if ((treg & 1) == 0) 229 cols += (treg >> 7) & 0xfe; 230 if ((treg & 0x80) == 0) { 231 newport_bfwait(npregs); 232 treg = npregs->set.dcbdata0.byshort.s1; 233 } 234 } while ((treg & 0x8000) == 0); 235 if (cols) { 236 if (cols > newport_xsize) 237 newport_xsize = cols; 238 newport_ysize += linetable[i + 1]; 239 } 240 } 241 printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize); 242 } 243 244 static void newport_get_revisions(void) 245 { 246 unsigned int tmp; 247 unsigned int board_rev; 248 unsigned int rex3_rev; 249 unsigned int vc2_rev; 250 unsigned int cmap_rev; 251 unsigned int xmap9_rev; 252 unsigned int bt445_rev; 253 unsigned int bitplanes; 254 255 rex3_rev = npregs->cset.status & NPORT_STAT_VERS; 256 257 npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL | 258 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 259 tmp = npregs->set.dcbdata0.bybytes.b3; 260 cmap_rev = tmp & 7; 261 board_rev = (tmp >> 4) & 7; 262 bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24; 263 264 npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL | 265 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 266 tmp = npregs->set.dcbdata0.bybytes.b3; 267 if ((tmp & 7) < cmap_rev) 268 cmap_rev = (tmp & 7); 269 270 vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7; 271 272 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 273 XM9_CRS_REVISION | NPORT_DMODE_W1); 274 xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7; 275 276 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 277 BT445_CSR_ADDR_REG | NPORT_DMODE_W1); 278 npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG; 279 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 280 BT445_CSR_REVISION | NPORT_DMODE_W1); 281 bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a; 282 283 #define L(a) (char)('A'+(a)) 284 printk 285 ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n", 286 board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev), 287 L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev)); 288 #undef L 289 290 if (board_rev == 3) /* I don't know all affected revisions */ 291 xcurs_correction = 21; 292 } 293 294 static void newport_exit(void) 295 { 296 int i; 297 298 /* free memory used by user font */ 299 for (i = 0; i < MAX_NR_CONSOLES; i++) 300 newport_set_def_font(i, NULL); 301 } 302 303 /* Can't be __init, do_take_over_console may call it later */ 304 static const char *newport_startup(void) 305 { 306 int i; 307 308 npregs->cset.config = NPORT_CFG_GD0; 309 310 if (newport_wait(npregs)) 311 goto out_unmap; 312 313 npregs->set.xstarti = TESTVAL; 314 if (npregs->set._xstart.word != XSTI_TO_FXSTART(TESTVAL)) 315 goto out_unmap; 316 317 for (i = 0; i < MAX_NR_CONSOLES; i++) 318 font_data[i] = FONT_DATA; 319 320 newport_reset(); 321 newport_get_revisions(); 322 newport_get_screensize(); 323 newport_has_init = 1; 324 325 return "SGI Newport"; 326 327 out_unmap: 328 return NULL; 329 } 330 331 static void newport_init(struct vc_data *vc, int init) 332 { 333 int cols, rows; 334 335 cols = newport_xsize / 8; 336 rows = newport_ysize / 16; 337 vc->vc_can_do_color = 1; 338 if (init) { 339 vc->vc_cols = cols; 340 vc->vc_rows = rows; 341 } else 342 vc_resize(vc, cols, rows); 343 } 344 345 static void newport_deinit(struct vc_data *c) 346 { 347 if (!con_is_bound(&newport_con) && newport_has_init) { 348 newport_exit(); 349 newport_has_init = 0; 350 } 351 } 352 353 static void newport_clear(struct vc_data *vc, int sy, int sx, int height, 354 int width) 355 { 356 int xend = ((sx + width) << 3) - 1; 357 int ystart = ((sy << 4) + topscan) & 0x3ff; 358 int yend = (((sy + height) << 4) + topscan - 1) & 0x3ff; 359 360 if (logo_active) 361 return; 362 363 if (ystart < yend) { 364 newport_clear_screen(sx << 3, ystart, xend, yend, 365 (vc->vc_color & 0xf0) >> 4); 366 } else { 367 newport_clear_screen(sx << 3, ystart, xend, 1023, 368 (vc->vc_color & 0xf0) >> 4); 369 newport_clear_screen(sx << 3, 0, xend, yend, 370 (vc->vc_color & 0xf0) >> 4); 371 } 372 } 373 374 static void newport_putc(struct vc_data *vc, int charattr, int ypos, 375 int xpos) 376 { 377 unsigned char *p; 378 379 p = &font_data[vc->vc_num][(charattr & 0xff) << 4]; 380 charattr = (charattr >> 8) & 0xff; 381 xpos <<= 3; 382 ypos <<= 4; 383 384 newport_render_background(xpos, ypos, xpos, ypos, 385 (charattr & 0xf0) >> 4); 386 387 /* Set the color and drawing mode. */ 388 newport_wait(npregs); 389 npregs->set.colori = charattr & 0xf; 390 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 391 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 392 NPORT_DMODE0_L32); 393 394 /* Set coordinates for bitmap operation. */ 395 npregs->set.xystarti = (xpos << 16) | ((ypos + topscan) & 0x3ff); 396 npregs->set.xyendi = ((xpos + 7) << 16); 397 newport_wait(npregs); 398 399 /* Go, baby, go... */ 400 RENDER(npregs, p); 401 } 402 403 static void newport_putcs(struct vc_data *vc, const unsigned short *s, 404 int count, int ypos, int xpos) 405 { 406 int i; 407 int charattr; 408 unsigned char *p; 409 410 charattr = (scr_readw(s) >> 8) & 0xff; 411 412 xpos <<= 3; 413 ypos <<= 4; 414 415 if (!logo_active) 416 /* Clear the area behing the string */ 417 newport_render_background(xpos, ypos, 418 xpos + ((count - 1) << 3), ypos, 419 (charattr & 0xf0) >> 4); 420 421 newport_wait(npregs); 422 423 /* Set the color and drawing mode. */ 424 npregs->set.colori = charattr & 0xf; 425 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 426 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 427 NPORT_DMODE0_L32); 428 429 for (i = 0; i < count; i++, xpos += 8) { 430 p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4]; 431 432 newport_wait(npregs); 433 434 /* Set coordinates for bitmap operation. */ 435 npregs->set.xystarti = 436 (xpos << 16) | ((ypos + topscan) & 0x3ff); 437 npregs->set.xyendi = ((xpos + 7) << 16); 438 439 /* Go, baby, go... */ 440 RENDER(npregs, p); 441 } 442 } 443 444 static void newport_cursor(struct vc_data *vc, int mode) 445 { 446 unsigned short treg; 447 int xcurs, ycurs; 448 449 switch (mode) { 450 case CM_ERASE: 451 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 452 newport_vc2_set(npregs, VC2_IREG_CONTROL, 453 (treg & ~(VC2_CTRL_ECDISP))); 454 break; 455 456 case CM_MOVE: 457 case CM_DRAW: 458 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 459 newport_vc2_set(npregs, VC2_IREG_CONTROL, 460 (treg | VC2_CTRL_ECDISP)); 461 xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2; 462 ycurs = ((xcurs / vc->vc_cols) << 4) + 31; 463 xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction; 464 newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs); 465 newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs); 466 } 467 } 468 469 static int newport_switch(struct vc_data *vc) 470 { 471 static int logo_drawn = 0; 472 473 topscan = 0; 474 npregs->cset.topscan = 0x3ff; 475 476 if (!logo_drawn) { 477 if (newport_show_logo()) { 478 logo_drawn = 1; 479 logo_active = 1; 480 } 481 } 482 483 return 1; 484 } 485 486 static int newport_blank(struct vc_data *c, int blank, int mode_switch) 487 { 488 unsigned short treg; 489 490 if (blank == 0) { 491 /* unblank console */ 492 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 493 newport_vc2_set(npregs, VC2_IREG_CONTROL, 494 (treg | VC2_CTRL_EDISP)); 495 } else { 496 /* blank console */ 497 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 498 newport_vc2_set(npregs, VC2_IREG_CONTROL, 499 (treg & ~(VC2_CTRL_EDISP))); 500 } 501 return 1; 502 } 503 504 static int newport_set_font(int unit, struct console_font *op) 505 { 506 int w = op->width; 507 int h = op->height; 508 int size = h * op->charcount; 509 int i; 510 unsigned char *new_data, *data = op->data, *p; 511 512 /* ladis: when I grow up, there will be a day... and more sizes will 513 * be supported ;-) */ 514 if ((w != 8) || (h != 16) 515 || (op->charcount != 256 && op->charcount != 512)) 516 return -EINVAL; 517 518 if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, 519 GFP_USER))) return -ENOMEM; 520 521 new_data += FONT_EXTRA_WORDS * sizeof(int); 522 FNTSIZE(new_data) = size; 523 FNTCHARCNT(new_data) = op->charcount; 524 REFCOUNT(new_data) = 0; /* usage counter */ 525 526 p = new_data; 527 for (i = 0; i < op->charcount; i++) { 528 memcpy(p, data, h); 529 data += 32; 530 p += h; 531 } 532 533 /* check if font is already used by other console */ 534 for (i = 0; i < MAX_NR_CONSOLES; i++) { 535 if (font_data[i] != FONT_DATA 536 && FNTSIZE(font_data[i]) == size 537 && !memcmp(font_data[i], new_data, size)) { 538 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 539 /* current font is the same as the new one */ 540 if (i == unit) 541 return 0; 542 new_data = font_data[i]; 543 break; 544 } 545 } 546 /* old font is user font */ 547 if (font_data[unit] != FONT_DATA) { 548 if (--REFCOUNT(font_data[unit]) == 0) 549 kfree(font_data[unit] - 550 FONT_EXTRA_WORDS * sizeof(int)); 551 } 552 REFCOUNT(new_data)++; 553 font_data[unit] = new_data; 554 555 return 0; 556 } 557 558 static int newport_set_def_font(int unit, struct console_font *op) 559 { 560 if (font_data[unit] != FONT_DATA) { 561 if (--REFCOUNT(font_data[unit]) == 0) 562 kfree(font_data[unit] - 563 FONT_EXTRA_WORDS * sizeof(int)); 564 font_data[unit] = FONT_DATA; 565 } 566 567 return 0; 568 } 569 570 static int newport_font_default(struct vc_data *vc, struct console_font *op, char *name) 571 { 572 return newport_set_def_font(vc->vc_num, op); 573 } 574 575 static int newport_font_set(struct vc_data *vc, struct console_font *font, unsigned flags) 576 { 577 return newport_set_font(vc->vc_num, font); 578 } 579 580 static bool newport_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 581 enum con_scroll dir, unsigned int lines) 582 { 583 int count, x, y; 584 unsigned short *s, *d; 585 unsigned short chattr; 586 587 logo_active = 0; /* it's time to disable the logo now.. */ 588 589 if (t == 0 && b == vc->vc_rows) { 590 if (dir == SM_UP) { 591 topscan = (topscan + (lines << 4)) & 0x3ff; 592 newport_clear_lines(vc->vc_rows - lines, 593 vc->vc_rows - 1, 594 (vc->vc_color & 0xf0) >> 4); 595 } else { 596 topscan = (topscan + (-lines << 4)) & 0x3ff; 597 newport_clear_lines(0, lines - 1, 598 (vc->vc_color & 0xf0) >> 4); 599 } 600 npregs->cset.topscan = (topscan - 1) & 0x3ff; 601 return false; 602 } 603 604 count = (b - t - lines) * vc->vc_cols; 605 if (dir == SM_UP) { 606 x = 0; 607 y = t; 608 s = (unsigned short *) (vc->vc_origin + 609 vc->vc_size_row * (t + lines)); 610 d = (unsigned short *) (vc->vc_origin + 611 vc->vc_size_row * t); 612 while (count--) { 613 chattr = scr_readw(s++); 614 if (chattr != scr_readw(d)) { 615 newport_putc(vc, chattr, y, x); 616 scr_writew(chattr, d); 617 } 618 d++; 619 if (++x == vc->vc_cols) { 620 x = 0; 621 y++; 622 } 623 } 624 d = (unsigned short *) (vc->vc_origin + 625 vc->vc_size_row * (b - lines)); 626 x = 0; 627 y = b - lines; 628 for (count = 0; count < (lines * vc->vc_cols); count++) { 629 if (scr_readw(d) != vc->vc_video_erase_char) { 630 newport_putc(vc, vc->vc_video_erase_char, 631 y, x); 632 scr_writew(vc->vc_video_erase_char, d); 633 } 634 d++; 635 if (++x == vc->vc_cols) { 636 x = 0; 637 y++; 638 } 639 } 640 } else { 641 x = vc->vc_cols - 1; 642 y = b - 1; 643 s = (unsigned short *) (vc->vc_origin + 644 vc->vc_size_row * (b - lines) - 2); 645 d = (unsigned short *) (vc->vc_origin + 646 vc->vc_size_row * b - 2); 647 while (count--) { 648 chattr = scr_readw(s--); 649 if (chattr != scr_readw(d)) { 650 newport_putc(vc, chattr, y, x); 651 scr_writew(chattr, d); 652 } 653 d--; 654 if (x-- == 0) { 655 x = vc->vc_cols - 1; 656 y--; 657 } 658 } 659 d = (unsigned short *) (vc->vc_origin + 660 vc->vc_size_row * t); 661 x = 0; 662 y = t; 663 for (count = 0; count < (lines * vc->vc_cols); count++) { 664 if (scr_readw(d) != vc->vc_video_erase_char) { 665 newport_putc(vc, vc->vc_video_erase_char, 666 y, x); 667 scr_writew(vc->vc_video_erase_char, d); 668 } 669 d++; 670 if (++x == vc->vc_cols) { 671 x = 0; 672 y++; 673 } 674 } 675 } 676 return true; 677 } 678 679 static int newport_set_origin(struct vc_data *vc) 680 { 681 return 0; 682 } 683 684 static void newport_save_screen(struct vc_data *vc) { } 685 686 const struct consw newport_con = { 687 .owner = THIS_MODULE, 688 .con_startup = newport_startup, 689 .con_init = newport_init, 690 .con_deinit = newport_deinit, 691 .con_clear = newport_clear, 692 .con_putc = newport_putc, 693 .con_putcs = newport_putcs, 694 .con_cursor = newport_cursor, 695 .con_scroll = newport_scroll, 696 .con_switch = newport_switch, 697 .con_blank = newport_blank, 698 .con_font_set = newport_font_set, 699 .con_font_default = newport_font_default, 700 .con_set_origin = newport_set_origin, 701 .con_save_screen = newport_save_screen 702 }; 703 704 static int newport_probe(struct gio_device *dev, 705 const struct gio_device_id *id) 706 { 707 int err; 708 709 if (!dev->resource.start) 710 return -EINVAL; 711 712 if (npregs) 713 return -EBUSY; /* we only support one Newport as console */ 714 715 newport_addr = dev->resource.start + 0xF0000; 716 if (!request_mem_region(newport_addr, NEWPORT_LEN, "Newport")) 717 return -ENODEV; 718 719 npregs = (struct newport_regs *)/* ioremap cannot fail */ 720 ioremap(newport_addr, sizeof(struct newport_regs)); 721 console_lock(); 722 err = do_take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1); 723 console_unlock(); 724 725 if (err) { 726 iounmap((void *)npregs); 727 release_mem_region(newport_addr, NEWPORT_LEN); 728 } 729 return err; 730 } 731 732 static void newport_remove(struct gio_device *dev) 733 { 734 give_up_console(&newport_con); 735 iounmap((void *)npregs); 736 release_mem_region(newport_addr, NEWPORT_LEN); 737 } 738 739 static struct gio_device_id newport_ids[] = { 740 { .id = 0x7e }, 741 { .id = 0xff } 742 }; 743 744 MODULE_ALIAS("gio:7e"); 745 746 static struct gio_driver newport_driver = { 747 .name = "newport", 748 .id_table = newport_ids, 749 .probe = newport_probe, 750 .remove = newport_remove, 751 }; 752 753 int __init newport_console_init(void) 754 { 755 return gio_register_driver(&newport_driver); 756 } 757 758 void __exit newport_console_exit(void) 759 { 760 gio_unregister_driver(&newport_driver); 761 } 762 763 module_init(newport_console_init); 764 module_exit(newport_console_exit); 765 766 MODULE_LICENSE("GPL"); 767