1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * linux/drivers/video/console/sticore.c - 4 * core code for console driver using HP's STI firmware 5 * 6 * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org> 7 * Copyright (C) 2001-2023 Helge Deller <deller@gmx.de> 8 * Copyright (C) 2001-2002 Thomas Bogendoerfer <tsbogend@alpha.franken.de> 9 * 10 * TODO: 11 * - call STI in virtual mode rather than in real mode 12 * - screen blanking with state_mgmt() in text mode STI ? 13 * - try to make it work on m68k hp workstations ;) 14 * 15 */ 16 17 #define pr_fmt(fmt) "%s: " fmt, KBUILD_MODNAME 18 19 #include <linux/module.h> 20 #include <linux/types.h> 21 #include <linux/kernel.h> 22 #include <linux/slab.h> 23 #include <linux/init.h> 24 #include <linux/pci.h> 25 #include <linux/font.h> 26 27 #include <asm/hardware.h> 28 #include <asm/page.h> 29 #include <asm/parisc-device.h> 30 #include <asm/pdc.h> 31 #include <asm/cacheflush.h> 32 #include <asm/grfioctl.h> 33 34 #include <video/sticore.h> 35 36 #define STI_DRIVERVERSION "Version 0.9c" 37 38 static struct sti_struct *default_sti __read_mostly; 39 40 /* number of STI ROMS found and their ptrs to each struct */ 41 static int num_sti_roms __read_mostly; 42 static struct sti_struct *sti_roms[MAX_STI_ROMS] __read_mostly; 43 44 static void *store_sti_val(struct sti_struct *sti, void *ptr, unsigned long val) 45 { 46 u32 *ptr32 = ptr; 47 48 if (IS_ENABLED(CONFIG_64BIT) && sti->do_call64) { 49 /* used for 64-bit STI ROM */ 50 unsigned long *ptr64 = ptr; 51 52 ptr64 = PTR_ALIGN(ptr64, sizeof(void *)); 53 *ptr64++ = val; 54 return ptr64; 55 } 56 57 /* used for 32-bit STI ROM */ 58 *ptr32++ = val; 59 return ptr32; 60 } 61 62 #define store_sti_ptr(sti, dest, ptr) \ 63 store_sti_val(sti, dest, STI_PTR(ptr)) 64 65 /* The colour indices used by STI are 66 * 0 - Black 67 * 1 - White 68 * 2 - Red 69 * 3 - Yellow/Brown 70 * 4 - Green 71 * 5 - Cyan 72 * 6 - Blue 73 * 7 - Magenta 74 * 75 * So we have the same colours as VGA (basically one bit each for R, G, B), 76 * but have to translate them, anyway. */ 77 78 static const u8 col_trans[8] = { 79 0, 6, 4, 5, 80 2, 7, 3, 1 81 }; 82 83 #define c_fg(sti, c) col_trans[((c>> 8) & 7)] 84 #define c_bg(sti, c) col_trans[((c>>11) & 7)] 85 #define c_index(sti, c) ((c) & 0xff) 86 87 static const struct sti_init_flags default_init_flags = { 88 .wait = STI_WAIT, 89 .reset = 1, 90 .text = 1, 91 .nontext = 1, 92 .no_chg_bet = 1, 93 .no_chg_bei = 1, 94 .init_cmap_tx = 1, 95 }; 96 97 static int sti_init_graph(struct sti_struct *sti) 98 { 99 struct sti_init_inptr *inptr = &sti->sti_data->init_inptr; 100 struct sti_init_inptr_ext *inptr_ext = &sti->sti_data->init_inptr_ext; 101 struct sti_init_outptr *outptr = &sti->sti_data->init_outptr; 102 unsigned long flags; 103 int ret, err; 104 105 spin_lock_irqsave(&sti->lock, flags); 106 107 memset(inptr, 0, sizeof(*inptr)); 108 inptr->text_planes = 3; /* # of text planes (max 3 for STI) */ 109 memset(inptr_ext, 0, sizeof(*inptr_ext)); 110 store_sti_ptr(sti, &inptr->ext_ptr, inptr_ext); 111 outptr->errno = 0; 112 113 ret = sti_call(sti, sti->init_graph, &default_init_flags, inptr, 114 outptr, sti->glob_cfg); 115 116 if (ret >= 0) 117 sti->text_planes = outptr->text_planes; 118 err = outptr->errno; 119 120 spin_unlock_irqrestore(&sti->lock, flags); 121 122 if (ret < 0) { 123 pr_err("STI init_graph failed (ret %d, errno %d)\n", ret, err); 124 return -1; 125 } 126 127 return 0; 128 } 129 130 static const struct sti_conf_flags default_conf_flags = { 131 .wait = STI_WAIT, 132 }; 133 134 static void sti_inq_conf(struct sti_struct *sti) 135 { 136 struct sti_conf_inptr *inptr = &sti->sti_data->inq_inptr; 137 struct sti_conf_outptr *outptr = &sti->sti_data->inq_outptr; 138 unsigned long flags; 139 s32 ret; 140 141 store_sti_ptr(sti, &outptr->ext_ptr, &sti->sti_data->inq_outptr_ext); 142 143 do { 144 spin_lock_irqsave(&sti->lock, flags); 145 memset(inptr, 0, sizeof(*inptr)); 146 ret = sti_call(sti, sti->inq_conf, &default_conf_flags, 147 inptr, outptr, sti->glob_cfg); 148 spin_unlock_irqrestore(&sti->lock, flags); 149 } while (ret == 1); 150 } 151 152 static const struct sti_font_flags default_font_flags = { 153 .wait = STI_WAIT, 154 .non_text = 0, 155 }; 156 157 void 158 sti_putc(struct sti_struct *sti, int c, int y, int x, 159 struct sti_cooked_font *font) 160 { 161 struct sti_font_inptr *inptr; 162 struct sti_font_inptr inptr_default = { 163 .font_start_addr = (void *)STI_PTR(font->raw), 164 .index = c_index(sti, c), 165 .fg_color = c_fg(sti, c), 166 .bg_color = c_bg(sti, c), 167 .dest_x = x * font->width, 168 .dest_y = y * font->height, 169 }; 170 struct sti_font_outptr *outptr = &sti->sti_data->font_outptr; 171 s32 ret; 172 unsigned long flags; 173 174 do { 175 spin_lock_irqsave(&sti->lock, flags); 176 inptr = &inptr_default; 177 if (IS_ENABLED(CONFIG_64BIT) && !sti->do_call64) { 178 /* copy below 4G if calling 32-bit on LP64 kernel */ 179 inptr = &sti->sti_data->font_inptr; 180 *inptr = inptr_default; 181 /* skip first 4 bytes for 32-bit STI call */ 182 inptr = (void *)(((unsigned long)inptr) + sizeof(u32)); 183 } 184 ret = sti_call(sti, sti->font_unpmv, &default_font_flags, 185 inptr, outptr, sti->glob_cfg); 186 spin_unlock_irqrestore(&sti->lock, flags); 187 } while (ret == 1); 188 } 189 190 static const struct sti_blkmv_flags clear_blkmv_flags = { 191 .wait = STI_WAIT, 192 .color = 1, 193 .clear = 1, 194 }; 195 196 void 197 sti_set(struct sti_struct *sti, int src_y, int src_x, 198 int height, int width, u8 color) 199 { 200 struct sti_blkmv_inptr *inptr; 201 struct sti_blkmv_inptr inptr_default = { 202 .fg_color = color, 203 .bg_color = color, 204 .src_x = src_x, 205 .src_y = src_y, 206 .dest_x = src_x, 207 .dest_y = src_y, 208 .width = width, 209 .height = height, 210 }; 211 struct sti_blkmv_outptr *outptr = &sti->sti_data->blkmv_outptr; 212 s32 ret; 213 unsigned long flags; 214 215 do { 216 spin_lock_irqsave(&sti->lock, flags); 217 inptr = &inptr_default; 218 if (IS_ENABLED(CONFIG_64BIT) && !sti->do_call64) { 219 /* copy below 4G if calling 32-bit on LP64 kernel */ 220 inptr = &sti->sti_data->blkmv_inptr; 221 *inptr = inptr_default; 222 } 223 ret = sti_call(sti, sti->block_move, &clear_blkmv_flags, 224 inptr, outptr, sti->glob_cfg); 225 spin_unlock_irqrestore(&sti->lock, flags); 226 } while (ret == 1); 227 } 228 229 void 230 sti_clear(struct sti_struct *sti, int src_y, int src_x, 231 int height, int width, int c, struct sti_cooked_font *font) 232 { 233 struct sti_blkmv_inptr *inptr; 234 struct sti_blkmv_inptr inptr_default = { 235 .fg_color = c_fg(sti, c), 236 .bg_color = c_bg(sti, c), 237 .src_x = src_x * font->width, 238 .src_y = src_y * font->height, 239 .dest_x = src_x * font->width, 240 .dest_y = src_y * font->height, 241 .width = width * font->width, 242 .height = height * font->height, 243 }; 244 struct sti_blkmv_outptr *outptr = &sti->sti_data->blkmv_outptr; 245 s32 ret; 246 unsigned long flags; 247 248 do { 249 spin_lock_irqsave(&sti->lock, flags); 250 inptr = &inptr_default; 251 if (IS_ENABLED(CONFIG_64BIT) && !sti->do_call64) { 252 /* copy below 4G if calling 32-bit on LP64 kernel */ 253 inptr = &sti->sti_data->blkmv_inptr; 254 *inptr = inptr_default; 255 } 256 ret = sti_call(sti, sti->block_move, &clear_blkmv_flags, 257 inptr, outptr, sti->glob_cfg); 258 spin_unlock_irqrestore(&sti->lock, flags); 259 } while (ret == 1); 260 } 261 262 static const struct sti_blkmv_flags default_blkmv_flags = { 263 .wait = STI_WAIT, 264 }; 265 266 void 267 sti_bmove(struct sti_struct *sti, int src_y, int src_x, 268 int dst_y, int dst_x, int height, int width, 269 struct sti_cooked_font *font) 270 { 271 struct sti_blkmv_inptr *inptr; 272 struct sti_blkmv_inptr inptr_default = { 273 .src_x = src_x * font->width, 274 .src_y = src_y * font->height, 275 .dest_x = dst_x * font->width, 276 .dest_y = dst_y * font->height, 277 .width = width * font->width, 278 .height = height * font->height, 279 }; 280 struct sti_blkmv_outptr *outptr = &sti->sti_data->blkmv_outptr; 281 s32 ret; 282 unsigned long flags; 283 284 do { 285 spin_lock_irqsave(&sti->lock, flags); 286 inptr = &inptr_default; 287 if (IS_ENABLED(CONFIG_64BIT) && !sti->do_call64) { 288 /* copy below 4G if calling 32-bit on LP64 kernel */ 289 inptr = &sti->sti_data->blkmv_inptr; 290 *inptr = inptr_default; 291 } 292 ret = sti_call(sti, sti->block_move, &default_blkmv_flags, 293 inptr, outptr, sti->glob_cfg); 294 spin_unlock_irqrestore(&sti->lock, flags); 295 } while (ret == 1); 296 } 297 298 299 static void sti_flush(unsigned long start, unsigned long end) 300 { 301 flush_icache_range(start, end); 302 } 303 304 static void sti_rom_copy(unsigned long base, unsigned long count, void *dest) 305 { 306 unsigned long dest_start = (unsigned long) dest; 307 308 /* this still needs to be revisited (see arch/parisc/mm/init.c:246) ! */ 309 while (count >= 4) { 310 count -= 4; 311 *(u32 *)dest = gsc_readl(base); 312 base += 4; 313 dest += 4; 314 } 315 while (count) { 316 count--; 317 *(u8 *)dest = gsc_readb(base); 318 base++; 319 dest++; 320 } 321 322 sti_flush(dest_start, (unsigned long)dest); 323 } 324 325 326 327 328 static char default_sti_path[21] __read_mostly; 329 330 #ifndef MODULE 331 static int __init sti_setup(char *str) 332 { 333 if (str) 334 strscpy(default_sti_path, str, sizeof(default_sti_path)); 335 336 return 1; 337 } 338 339 /* Assuming the machine has multiple STI consoles (=graphic cards) which 340 * all get detected by sticon, the user may define with the linux kernel 341 * parameter sti=<x> which of them will be the initial boot-console. 342 * <x> is a number between 0 and MAX_STI_ROMS, with 0 as the default 343 * STI screen. 344 */ 345 __setup("sti=", sti_setup); 346 #endif 347 348 349 350 static char *font_name; 351 static int font_index, 352 font_height, 353 font_width; 354 #ifndef MODULE 355 static int sti_font_setup(char *str) 356 { 357 /* 358 * The default font can be selected in various ways. 359 * a) sti_font=VGA8x16, sti_font=10x20, sti_font=10*20 selects 360 * an built-in Linux framebuffer font. 361 * b) sti_font=<index>, where index is (1..x) with 1 selecting 362 * the first HP STI ROM built-in font.. 363 */ 364 365 if (*str >= '0' && *str <= '9') { 366 char *x; 367 368 if ((x = strchr(str, 'x')) || (x = strchr(str, '*'))) { 369 font_height = simple_strtoul(str, NULL, 0); 370 font_width = simple_strtoul(x+1, NULL, 0); 371 } else { 372 font_index = simple_strtoul(str, NULL, 0); 373 } 374 } else { 375 font_name = str; /* fb font name */ 376 } 377 378 return 1; 379 } 380 381 /* The optional linux kernel parameter "sti_font" defines which font 382 * should be used by the sticon driver to draw characters to the screen. 383 * Possible values are: 384 * - sti_font=<fb_fontname>: 385 * <fb_fontname> is the name of one of the linux-kernel built-in 386 * framebuffer font names (e.g. VGA8x16, SUN22x18). 387 * This is only available if the fonts have been statically compiled 388 * in with e.g. the CONFIG_FONT_8x16 or CONFIG_FONT_SUN12x22 options. 389 * - sti_font=<number> (<number> = 1,2,3,...) 390 * most STI ROMs have built-in HP specific fonts, which can be selected 391 * by giving the desired number to the sticon driver. 392 * NOTE: This number is machine and STI ROM dependend. 393 * - sti_font=<height>x<width> (e.g. sti_font=16x8) 394 * <height> and <width> gives hints to the height and width of the 395 * font which the user wants. The sticon driver will try to use 396 * a font with this height and width, but if no suitable font is 397 * found, sticon will use the default 8x8 font. 398 */ 399 __setup("sti_font=", sti_font_setup); 400 #endif 401 402 403 404 static void sti_dump_globcfg(struct sti_struct *sti) 405 { 406 struct sti_glob_cfg *glob_cfg = sti->glob_cfg; 407 struct sti_glob_cfg_ext *cfg = &sti->sti_data->glob_cfg_ext; 408 409 pr_debug("%d text planes\n" 410 "%4d x %4d screen resolution\n" 411 "%4d x %4d offscreen\n" 412 "%4d x %4d layout\n", 413 glob_cfg->text_planes, 414 glob_cfg->onscreen_x, glob_cfg->onscreen_y, 415 glob_cfg->offscreen_x, glob_cfg->offscreen_y, 416 glob_cfg->total_x, glob_cfg->total_y); 417 418 /* dump extended cfg */ 419 pr_debug("monitor %d\n" 420 "in friendly mode: %d\n" 421 "power consumption %d watts\n" 422 "freq ref %d\n" 423 "sti_mem_addr %px (size=%d bytes)\n", 424 cfg->curr_mon, 425 cfg->friendly_boot, 426 cfg->power, 427 cfg->freq_ref, 428 cfg->sti_mem_addr, sti->sti_mem_request); 429 } 430 431 static void sti_dump_outptr(struct sti_struct *sti) 432 { 433 pr_debug("%d bits per pixel\n" 434 "%d used bits\n" 435 "%d planes\n" 436 "attributes %08x\n", 437 sti->sti_data->inq_outptr.bits_per_pixel, 438 sti->sti_data->inq_outptr.bits_used, 439 sti->sti_data->inq_outptr.planes, 440 sti->sti_data->inq_outptr.attributes); 441 } 442 443 static int sti_init_glob_cfg(struct sti_struct *sti, unsigned long rom_address, 444 unsigned long hpa) 445 { 446 struct sti_glob_cfg *glob_cfg; 447 struct sti_glob_cfg_ext *glob_cfg_ext; 448 void *save_addr, *ptr; 449 void *sti_mem_addr; 450 int i, size; 451 452 if (sti->sti_mem_request < 256) 453 sti->sti_mem_request = 256; /* STI default */ 454 455 size = sizeof(struct sti_all_data) + sti->sti_mem_request - 256; 456 457 sti->sti_data = kzalloc(size, STI_LOWMEM); 458 if (!sti->sti_data) 459 return -ENOMEM; 460 461 glob_cfg = &sti->sti_data->glob_cfg; 462 glob_cfg_ext = &sti->sti_data->glob_cfg_ext; 463 save_addr = &sti->sti_data->save_addr; 464 sti_mem_addr = &sti->sti_data->sti_mem_addr; 465 466 for (i = 0; i < STI_REGION_MAX; i++) { 467 unsigned long newhpa, len; 468 469 if (sti->pd) { 470 unsigned char offs = sti->rm_entry[i]; 471 472 if (offs == 0) 473 continue; 474 if (offs != PCI_ROM_ADDRESS && 475 (offs < PCI_BASE_ADDRESS_0 || 476 offs > PCI_BASE_ADDRESS_5)) { 477 pr_warn("STI pci region mapping for region %d (%02x) can't be mapped\n", 478 i,sti->rm_entry[i]); 479 continue; 480 } 481 newhpa = pci_resource_start (sti->pd, (offs - PCI_BASE_ADDRESS_0) / 4); 482 } else 483 newhpa = (i == 0) ? rom_address : hpa; 484 485 sti->regions_phys[i] = 486 REGION_OFFSET_TO_PHYS(sti->regions[i], newhpa); 487 488 len = sti->regions[i].region_desc.length * 4096; 489 490 pr_debug("region #%d: phys %08lx, len=%lukB, " 491 "btlb=%d, sysonly=%d, cache=%d, last=%d\n", 492 i, sti->regions_phys[i], len / 1024, 493 sti->regions[i].region_desc.btlb, 494 sti->regions[i].region_desc.sys_only, 495 sti->regions[i].region_desc.cache, 496 sti->regions[i].region_desc.last); 497 498 /* last entry reached ? */ 499 if (sti->regions[i].region_desc.last) 500 break; 501 } 502 503 ptr = &glob_cfg->region_ptrs; 504 for (i = 0; i < STI_REGION_MAX; i++) 505 ptr = store_sti_val(sti, ptr, sti->regions_phys[i]); 506 507 *(s32 *)ptr = 0; /* set reent_lvl */ 508 ptr += sizeof(s32); 509 ptr = store_sti_ptr(sti, ptr, save_addr); 510 ptr = store_sti_ptr(sti, ptr, glob_cfg_ext); 511 512 store_sti_ptr(sti, &glob_cfg_ext->sti_mem_addr, sti_mem_addr); 513 514 sti->glob_cfg = glob_cfg; 515 516 return 0; 517 } 518 519 #ifdef CONFIG_FONT_SUPPORT 520 static struct sti_cooked_font * 521 sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name) 522 { 523 const struct font_desc *fbfont = NULL; 524 unsigned int size, bpc; 525 void *dest; 526 struct sti_rom_font *nf; 527 struct sti_cooked_font *cooked_font; 528 529 if (fbfont_name && strlen(fbfont_name)) 530 fbfont = find_font(fbfont_name); 531 if (!fbfont) 532 fbfont = get_default_font(1024,768, ~(u32)0, ~(u32)0); 533 if (!fbfont) 534 return NULL; 535 536 pr_info(" using %ux%u framebuffer font %s\n", 537 fbfont->width, fbfont->height, fbfont->name); 538 539 bpc = ((fbfont->width+7)/8) * fbfont->height; 540 size = bpc * fbfont->charcount; 541 size += sizeof(struct sti_rom_font); 542 543 nf = kzalloc(size, STI_LOWMEM); 544 if (!nf) 545 return NULL; 546 547 nf->first_char = 0; 548 nf->last_char = fbfont->charcount - 1; 549 nf->width = fbfont->width; 550 nf->height = fbfont->height; 551 nf->font_type = STI_FONT_HPROMAN8; 552 nf->bytes_per_char = bpc; 553 nf->next_font = 0; 554 nf->underline_height = 1; 555 nf->underline_pos = fbfont->height - nf->underline_height; 556 557 dest = nf; 558 dest += sizeof(struct sti_rom_font); 559 memcpy(dest, fbfont->data, bpc * fbfont->charcount); 560 561 cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); 562 if (!cooked_font) { 563 kfree(nf); 564 return NULL; 565 } 566 567 cooked_font->raw = nf; 568 cooked_font->raw_ptr = nf; 569 cooked_font->next_font = NULL; 570 571 cooked_rom->font_start = cooked_font; 572 573 return cooked_font; 574 } 575 #else 576 static struct sti_cooked_font * 577 sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name) 578 { 579 return NULL; 580 } 581 #endif 582 583 static void sti_dump_font(struct sti_cooked_font *font) 584 { 585 #ifdef STI_DUMP_FONT 586 unsigned char *p = (unsigned char *)font->raw; 587 int n; 588 589 p += sizeof(struct sti_rom_font); 590 pr_debug(" w %d h %d bpc %d\n", font->width, font->height, 591 font->raw->bytes_per_char); 592 593 for (n = 0; n < 256 * font->raw->bytes_per_char; n += 16, p += 16) { 594 pr_debug(" 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x," 595 " 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x," 596 " 0x%02x, 0x%02x, 0x%02x, 0x%02x,\n", 597 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8], 598 p[9], p[10], p[11], p[12], p[13], p[14], p[15]); 599 } 600 #endif 601 } 602 603 static int sti_search_font(struct sti_cooked_rom *rom, int height, int width) 604 { 605 struct sti_cooked_font *font; 606 int i = 0; 607 608 for (font = rom->font_start; font; font = font->next_font, i++) { 609 if ((font->raw->width == width) && 610 (font->raw->height == height)) 611 return i; 612 } 613 return 0; 614 } 615 616 static struct sti_cooked_font *sti_select_font(struct sti_cooked_rom *rom) 617 { 618 struct sti_cooked_font *font; 619 int i; 620 621 /* check for framebuffer-font first */ 622 if (!font_index) { 623 font = sti_select_fbfont(rom, font_name); 624 if (font) 625 return font; 626 } 627 628 if (font_width && font_height) 629 font_index = sti_search_font(rom, 630 font_height, font_width); 631 632 for (font = rom->font_start, i = font_index - 1; 633 font && (i > 0); 634 font = font->next_font, i--); 635 636 if (font) 637 return font; 638 else 639 return rom->font_start; 640 } 641 642 643 static void sti_dump_rom(struct sti_struct *sti) 644 { 645 struct sti_rom *rom = sti->rom->raw; 646 struct sti_cooked_font *font_start; 647 int nr; 648 649 pr_info(" id %04x-%04x, conforms to spec rev. %d.%02x\n", 650 rom->graphics_id[0], 651 rom->graphics_id[1], 652 rom->revno[0] >> 4, 653 rom->revno[0] & 0x0f); 654 pr_debug(" supports %d monitors\n", rom->num_mons); 655 pr_debug(" font start %08x\n", rom->font_start); 656 pr_debug(" region list %08x\n", rom->region_list); 657 pr_debug(" init_graph %08x\n", rom->init_graph); 658 pr_debug(" bus support %02x\n", rom->bus_support); 659 pr_debug(" ext bus support %02x\n", rom->ext_bus_support); 660 pr_debug(" alternate code type %d\n", rom->alt_code_type); 661 662 font_start = sti->rom->font_start; 663 nr = 0; 664 while (font_start) { 665 struct sti_rom_font *f = font_start->raw; 666 667 pr_info(" built-in font #%d: size %dx%d, chars %d-%d, bpc %d\n", ++nr, 668 f->width, f->height, 669 f->first_char, f->last_char, f->bytes_per_char); 670 font_start = font_start->next_font; 671 } 672 } 673 674 675 static int sti_cook_fonts(struct sti_cooked_rom *cooked_rom, 676 struct sti_rom *raw_rom) 677 { 678 struct sti_rom_font *raw_font, *font_start; 679 struct sti_cooked_font *cooked_font; 680 681 cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); 682 if (!cooked_font) 683 return 0; 684 685 cooked_rom->font_start = cooked_font; 686 687 raw_font = ((void *)raw_rom) + (raw_rom->font_start); 688 689 font_start = raw_font; 690 cooked_font->raw = raw_font; 691 692 while (raw_font->next_font) { 693 raw_font = ((void *)font_start) + (raw_font->next_font); 694 695 cooked_font->next_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); 696 if (!cooked_font->next_font) 697 return 1; 698 699 cooked_font = cooked_font->next_font; 700 701 cooked_font->raw = raw_font; 702 } 703 704 cooked_font->next_font = NULL; 705 return 1; 706 } 707 708 #define BMODE_RELOCATE(offset) offset = (offset) / 4; 709 #define BMODE_LAST_ADDR_OFFS 0x50 710 711 void sti_font_convert_bytemode(struct sti_struct *sti, struct sti_cooked_font *f) 712 { 713 unsigned char *n, *p, *q; 714 int size = f->raw->bytes_per_char * (f->raw->last_char + 1) + sizeof(struct sti_rom_font); 715 struct sti_rom_font *old_font; 716 717 if (sti->wordmode) 718 return; 719 720 old_font = f->raw_ptr; 721 n = kcalloc(4, size, STI_LOWMEM); 722 f->raw_ptr = n; 723 if (!n) 724 return; 725 p = n + 3; 726 q = (unsigned char *) f->raw; 727 while (size--) { 728 *p = *q++; 729 p += 4; 730 } 731 /* store new ptr to byte-mode font and delete old font */ 732 f->raw = (struct sti_rom_font *) (n + 3); 733 kfree(old_font); 734 } 735 EXPORT_SYMBOL(sti_font_convert_bytemode); 736 737 static void sti_bmode_rom_copy(unsigned long base, unsigned long count, 738 void *dest) 739 { 740 unsigned long dest_start = (unsigned long) dest; 741 742 while (count) { 743 count--; 744 *(u8 *)dest = gsc_readl(base); 745 base += 4; 746 dest++; 747 } 748 749 sti_flush(dest_start, (unsigned long)dest); 750 } 751 752 static struct sti_rom *sti_get_bmode_rom (unsigned long address) 753 { 754 struct sti_rom *raw; 755 u32 size; 756 struct sti_rom_font *raw_font, *font_start; 757 758 sti_bmode_rom_copy(address + BMODE_LAST_ADDR_OFFS, sizeof(size), &size); 759 760 size = (size+3) / 4; 761 raw = kmalloc(size, STI_LOWMEM); 762 if (raw) { 763 sti_bmode_rom_copy(address, size, raw); 764 memmove (&raw->res004, &raw->type[0], 0x3c); 765 raw->type[3] = raw->res004; 766 767 BMODE_RELOCATE (raw->region_list); 768 BMODE_RELOCATE (raw->font_start); 769 770 BMODE_RELOCATE (raw->init_graph); 771 BMODE_RELOCATE (raw->state_mgmt); 772 BMODE_RELOCATE (raw->font_unpmv); 773 BMODE_RELOCATE (raw->block_move); 774 BMODE_RELOCATE (raw->inq_conf); 775 776 raw_font = ((void *)raw) + raw->font_start; 777 font_start = raw_font; 778 779 while (raw_font->next_font) { 780 BMODE_RELOCATE (raw_font->next_font); 781 raw_font = ((void *)font_start) + raw_font->next_font; 782 } 783 } 784 return raw; 785 } 786 787 static struct sti_rom *sti_get_wmode_rom(unsigned long address) 788 { 789 struct sti_rom *raw; 790 unsigned long size; 791 792 /* read the ROM size directly from the struct in ROM */ 793 size = gsc_readl(address + offsetof(struct sti_rom,last_addr)); 794 795 raw = kmalloc(size, STI_LOWMEM); 796 if (raw) 797 sti_rom_copy(address, size, raw); 798 799 return raw; 800 } 801 802 static int sti_read_rom(int wordmode, struct sti_struct *sti, 803 unsigned long address) 804 { 805 struct sti_cooked_rom *cooked; 806 struct sti_rom *raw = NULL; 807 unsigned long revno; 808 809 cooked = kmalloc(sizeof *cooked, GFP_KERNEL); 810 if (!cooked) 811 goto out_err; 812 813 if (wordmode) 814 raw = sti_get_wmode_rom (address); 815 else 816 raw = sti_get_bmode_rom (address); 817 818 if (!raw) 819 goto out_err; 820 821 if (!sti_cook_fonts(cooked, raw)) { 822 pr_warn("No font found for STI at %08lx\n", address); 823 goto out_err; 824 } 825 826 if (raw->region_list) 827 memcpy(sti->regions, ((void *)raw)+raw->region_list, sizeof(sti->regions)); 828 829 address = (unsigned long) STI_PTR(raw); 830 831 pr_info("STI %s ROM supports 32 %sbit firmware functions.\n", 832 wordmode ? "word mode" : "byte mode", 833 raw->alt_code_type == ALT_CODE_TYPE_PA_RISC_64 834 ? "and 64 " : ""); 835 836 if (IS_ENABLED(CONFIG_64BIT) && 837 raw->alt_code_type == ALT_CODE_TYPE_PA_RISC_64) { 838 sti->do_call64 = 1; 839 sti->font_unpmv = address + (raw->font_unp_addr & 0x03ffffff); 840 sti->block_move = address + (raw->block_move_addr & 0x03ffffff); 841 sti->init_graph = address + (raw->init_graph_addr & 0x03ffffff); 842 sti->inq_conf = address + (raw->inq_conf_addr & 0x03ffffff); 843 } else { 844 sti->font_unpmv = address + (raw->font_unpmv & 0x03ffffff); 845 sti->block_move = address + (raw->block_move & 0x03ffffff); 846 sti->init_graph = address + (raw->init_graph & 0x03ffffff); 847 sti->inq_conf = address + (raw->inq_conf & 0x03ffffff); 848 } 849 850 sti->rom = cooked; 851 sti->rom->raw = raw; 852 sti_dump_rom(sti); 853 854 sti->wordmode = wordmode; 855 sti->font = sti_select_font(sti->rom); 856 sti->font->width = sti->font->raw->width; 857 sti->font->height = sti->font->raw->height; 858 sti_font_convert_bytemode(sti, sti->font); 859 sti_dump_font(sti->font); 860 861 pr_info(" using %d-bit STI ROM functions\n", 862 (IS_ENABLED(CONFIG_64BIT) && sti->do_call64) ? 64 : 32); 863 864 sti->sti_mem_request = raw->sti_mem_req; 865 pr_debug(" mem_request = %d, reentsize %d\n", 866 sti->sti_mem_request, raw->reentsize); 867 868 sti->graphics_id[0] = raw->graphics_id[0]; 869 sti->graphics_id[1] = raw->graphics_id[1]; 870 871 /* check if the ROM routines in this card are compatible */ 872 if (wordmode || sti->graphics_id[1] != 0x09A02587) 873 goto ok; 874 875 revno = (raw->revno[0] << 8) | raw->revno[1]; 876 877 switch (sti->graphics_id[0]) { 878 case S9000_ID_HCRX: 879 /* HyperA or HyperB ? */ 880 if (revno == 0x8408 || revno == 0x840b) 881 goto msg_not_supported; 882 break; 883 case CRT_ID_THUNDER: 884 if (revno == 0x8509) 885 goto msg_not_supported; 886 break; 887 case CRT_ID_THUNDER2: 888 if (revno == 0x850c) 889 goto msg_not_supported; 890 } 891 ok: 892 return 1; 893 894 msg_not_supported: 895 pr_warn("Sorry, this GSC/STI card is not yet supported.\n"); 896 pr_warn("Please see https://parisc.wiki.kernel.org/" 897 "index.php/Graphics_howto for more info.\n"); 898 /* fall through */ 899 out_err: 900 kfree(raw); 901 kfree(cooked); 902 return 0; 903 } 904 905 static struct sti_struct *sti_try_rom_generic(unsigned long address, 906 unsigned long hpa, 907 struct pci_dev *pd) 908 { 909 struct sti_struct *sti; 910 int ok; 911 u32 sig; 912 913 if (num_sti_roms >= MAX_STI_ROMS) { 914 pr_warn("maximum number of STI ROMS reached !\n"); 915 return NULL; 916 } 917 918 sti = kzalloc(sizeof(*sti), GFP_KERNEL); 919 if (!sti) 920 return NULL; 921 922 spin_lock_init(&sti->lock); 923 924 test_rom: 925 /* pdc_add_valid() works only on 32-bit kernels */ 926 if ((!IS_ENABLED(CONFIG_64BIT) || 927 (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS32)) && 928 pdc_add_valid(address)) { 929 goto out_err; 930 } 931 932 sig = gsc_readl(address); 933 934 /* check for a PCI ROM structure */ 935 if ((le32_to_cpu(sig)==0xaa55)) { 936 unsigned int i, rm_offset; 937 u32 *rm; 938 i = gsc_readl(address+0x04); 939 if (i != 1) { 940 /* The ROM could have multiple architecture 941 * dependent images (e.g. i386, parisc,...) */ 942 pr_warn("PCI ROM is not a STI ROM type image (0x%8x)\n", i); 943 goto out_err; 944 } 945 946 sti->pd = pd; 947 948 i = gsc_readl(address+0x0c); 949 pr_debug("PCI ROM size (from header) = %d kB\n", 950 le16_to_cpu(i>>16)*512/1024); 951 rm_offset = le16_to_cpu(i & 0xffff); 952 if (rm_offset) { 953 /* read 16 bytes from the pci region mapper array */ 954 rm = (u32*) &sti->rm_entry; 955 *rm++ = gsc_readl(address+rm_offset+0x00); 956 *rm++ = gsc_readl(address+rm_offset+0x04); 957 *rm++ = gsc_readl(address+rm_offset+0x08); 958 *rm++ = gsc_readl(address+rm_offset+0x0c); 959 } 960 961 address += le32_to_cpu(gsc_readl(address+8)); 962 pr_debug("sig %04x, PCI STI ROM at %08lx\n", sig, address); 963 goto test_rom; 964 } 965 966 ok = 0; 967 968 if ((sig & 0xff) == 0x01) { 969 pr_debug(" byte mode ROM at %08lx, hpa at %08lx\n", 970 address, hpa); 971 ok = sti_read_rom(0, sti, address); 972 } 973 974 if ((sig & 0xffff) == 0x0303) { 975 pr_debug(" word mode ROM at %08lx, hpa at %08lx\n", 976 address, hpa); 977 ok = sti_read_rom(1, sti, address); 978 } 979 980 if (!ok) 981 goto out_err; 982 983 if (sti_init_glob_cfg(sti, address, hpa)) 984 goto out_err; /* not enough memory */ 985 986 /* disable STI PCI ROM. ROM and card RAM overlap and 987 * leaving it enabled would force HPMCs 988 */ 989 if (sti->pd) { 990 unsigned long rom_base; 991 rom_base = pci_resource_start(sti->pd, PCI_ROM_RESOURCE); 992 pci_write_config_dword(sti->pd, PCI_ROM_ADDRESS, rom_base & ~PCI_ROM_ADDRESS_ENABLE); 993 pr_debug("STI PCI ROM disabled\n"); 994 } 995 996 if (sti_init_graph(sti)) 997 goto out_err; 998 999 sti_inq_conf(sti); 1000 sti_dump_globcfg(sti); 1001 sti_dump_outptr(sti); 1002 1003 pr_info(" graphics card name: %s\n", 1004 sti->sti_data->inq_outptr.dev_name); 1005 1006 sti_roms[num_sti_roms] = sti; 1007 num_sti_roms++; 1008 1009 return sti; 1010 1011 out_err: 1012 kfree(sti); 1013 return NULL; 1014 } 1015 1016 static void sticore_check_for_default_sti(struct sti_struct *sti, char *path) 1017 { 1018 pr_info(" located at [%s]\n", sti->pa_path); 1019 if (strcmp (path, default_sti_path) == 0) 1020 default_sti = sti; 1021 } 1022 1023 /* 1024 * on newer systems PDC gives the address of the ROM 1025 * in the additional address field addr[1] while on 1026 * older Systems the PDC stores it in page0->proc_sti 1027 */ 1028 static int __init sticore_pa_init(struct parisc_device *dev) 1029 { 1030 struct sti_struct *sti = NULL; 1031 int hpa = dev->hpa.start; 1032 1033 if (dev->num_addrs && dev->addr[0]) 1034 sti = sti_try_rom_generic(dev->addr[0], hpa, NULL); 1035 if (!sti) 1036 sti = sti_try_rom_generic(hpa, hpa, NULL); 1037 if (!sti) 1038 sti = sti_try_rom_generic(PAGE0->proc_sti, hpa, NULL); 1039 if (!sti) 1040 return 1; 1041 1042 print_pa_hwpath(dev, sti->pa_path); 1043 sticore_check_for_default_sti(sti, sti->pa_path); 1044 return 0; 1045 } 1046 1047 1048 static int sticore_pci_init(struct pci_dev *pd, const struct pci_device_id *ent) 1049 { 1050 #ifdef CONFIG_PCI 1051 unsigned long fb_base, rom_base; 1052 unsigned int fb_len, rom_len; 1053 int err; 1054 struct sti_struct *sti; 1055 1056 err = pci_enable_device(pd); 1057 if (err < 0) { 1058 dev_err(&pd->dev, "Cannot enable PCI device\n"); 1059 return err; 1060 } 1061 1062 fb_base = pci_resource_start(pd, 0); 1063 fb_len = pci_resource_len(pd, 0); 1064 rom_base = pci_resource_start(pd, PCI_ROM_RESOURCE); 1065 rom_len = pci_resource_len(pd, PCI_ROM_RESOURCE); 1066 if (rom_base) { 1067 pci_write_config_dword(pd, PCI_ROM_ADDRESS, rom_base | PCI_ROM_ADDRESS_ENABLE); 1068 pr_debug("STI PCI ROM enabled at 0x%08lx\n", rom_base); 1069 } 1070 1071 pr_info("STI PCI graphic ROM found at %08lx (%u kB), fb at %08lx (%u MB)\n", 1072 rom_base, rom_len/1024, fb_base, fb_len/1024/1024); 1073 1074 pr_debug("Trying PCI STI ROM at %08lx, PCI hpa at %08lx\n", 1075 rom_base, fb_base); 1076 1077 sti = sti_try_rom_generic(rom_base, fb_base, pd); 1078 if (sti) { 1079 print_pci_hwpath(pd, sti->pa_path); 1080 sticore_check_for_default_sti(sti, sti->pa_path); 1081 } 1082 1083 if (!sti) { 1084 pr_warn("Unable to handle STI device '%s'\n", pci_name(pd)); 1085 return -ENODEV; 1086 } 1087 #endif /* CONFIG_PCI */ 1088 1089 return 0; 1090 } 1091 1092 1093 static void __exit sticore_pci_remove(struct pci_dev *pd) 1094 { 1095 BUG(); 1096 } 1097 1098 1099 static struct pci_device_id sti_pci_tbl[] = { 1100 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_EG) }, 1101 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX6) }, 1102 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX4) }, 1103 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX2) }, 1104 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FXE) }, 1105 { 0, } /* terminate list */ 1106 }; 1107 MODULE_DEVICE_TABLE(pci, sti_pci_tbl); 1108 1109 static struct pci_driver pci_sti_driver = { 1110 .name = "sti", 1111 .id_table = sti_pci_tbl, 1112 .probe = sticore_pci_init, 1113 .remove = __exit_p(sticore_pci_remove), 1114 }; 1115 1116 static struct parisc_device_id sti_pa_tbl[] = { 1117 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00077 }, 1118 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00085 }, 1119 { 0, } 1120 }; 1121 MODULE_DEVICE_TABLE(parisc, sti_pa_tbl); 1122 1123 static struct parisc_driver pa_sti_driver __refdata = { 1124 .name = "sti", 1125 .id_table = sti_pa_tbl, 1126 .probe = sticore_pa_init, 1127 }; 1128 1129 1130 /* 1131 * sti_init_roms() - detects all STI ROMs and stores them in sti_roms[] 1132 */ 1133 1134 static int sticore_initialized __read_mostly; 1135 1136 static void sti_init_roms(void) 1137 { 1138 if (sticore_initialized) 1139 return; 1140 1141 sticore_initialized = 1; 1142 1143 pr_info("STI GSC/PCI core graphics driver " 1144 STI_DRIVERVERSION "\n"); 1145 1146 /* Register drivers for native & PCI cards */ 1147 register_parisc_driver(&pa_sti_driver); 1148 WARN_ON(pci_register_driver(&pci_sti_driver)); 1149 1150 /* if we didn't find the given default sti, take the first one */ 1151 if (!default_sti) 1152 default_sti = sti_roms[0]; 1153 1154 } 1155 1156 /* 1157 * index = 0 gives default sti 1158 * index > 0 gives other stis in detection order 1159 */ 1160 struct sti_struct * sti_get_rom(unsigned int index) 1161 { 1162 if (!sticore_initialized) 1163 sti_init_roms(); 1164 1165 if (index == 0) 1166 return default_sti; 1167 1168 if (index > num_sti_roms) 1169 return NULL; 1170 1171 return sti_roms[index-1]; 1172 } 1173 EXPORT_SYMBOL(sti_get_rom); 1174 1175 1176 int sti_call(const struct sti_struct *sti, unsigned long func, 1177 const void *flags, void *inptr, void *outptr, 1178 struct sti_glob_cfg *glob_cfg) 1179 { 1180 unsigned long _flags = STI_PTR(flags); 1181 unsigned long _inptr = STI_PTR(inptr); 1182 unsigned long _outptr = STI_PTR(outptr); 1183 unsigned long _glob_cfg = STI_PTR(glob_cfg); 1184 int ret; 1185 1186 /* Check for overflow when using 32bit STI on 64bit kernel. */ 1187 if (WARN_ONCE(IS_ENABLED(CONFIG_64BIT) && !sti->do_call64 && 1188 (upper_32_bits(_flags) || upper_32_bits(_inptr) || 1189 upper_32_bits(_outptr) || upper_32_bits(_glob_cfg)), 1190 "Out of 32bit-range pointers!")) 1191 return -1; 1192 1193 ret = pdc_sti_call(func, _flags, _inptr, _outptr, _glob_cfg, 1194 sti->do_call64); 1195 1196 return ret; 1197 } 1198 1199 MODULE_AUTHOR("Philipp Rumpf, Helge Deller, Thomas Bogendoerfer"); 1200 MODULE_DESCRIPTION("Core STI driver for HP's NGLE series graphics cards in HP PARISC machines"); 1201 MODULE_LICENSE("GPL v2"); 1202 1203