1208 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * linux/drivers/video/console/sticore.c -4 * core code for console driver using HP's STI firmware5 *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 mode12 * - 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_MODNAME18 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 38static struct sti_struct *default_sti __read_mostly;39 40/* number of STI ROMS found and their ptrs to each struct */41static int num_sti_roms __read_mostly;42static struct sti_struct *sti_roms[MAX_STI_ROMS] __read_mostly;43 44static 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 are66 * 0 - Black67 * 1 - White68 * 2 - Red69 * 3 - Yellow/Brown70 * 4 - Green71 * 5 - Cyan72 * 6 - Blue73 * 7 - Magenta74 *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 78static const u8 col_trans[8] = {79 0, 6, 4, 5,80 2, 7, 3, 181};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 87static 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 97static 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 130static const struct sti_conf_flags default_conf_flags = {131 .wait = STI_WAIT,132};133 134static 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 152static const struct sti_font_flags default_font_flags = {153 .wait = STI_WAIT,154 .non_text = 0,155};156 157void158sti_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 190static const struct sti_blkmv_flags clear_blkmv_flags = {191 .wait = STI_WAIT,192 .color = 1,193 .clear = 1,194};195 196void197sti_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 229void230sti_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 262static const struct sti_blkmv_flags default_blkmv_flags = {263 .wait = STI_WAIT,264};265 266void267sti_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 299static void sti_flush(unsigned long start, unsigned long end)300{301 flush_icache_range(start, end);302}303 304static 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 328static char default_sti_path[21] __read_mostly;329 330#ifndef MODULE331static 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) which340 * all get detected by sticon, the user may define with the linux kernel341 * 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 default343 * STI screen.344 */345__setup("sti=", sti_setup);346#endif347 348 349 350static char *font_name;351static int font_index,352 font_height,353 font_width;354#ifndef MODULE355static 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 selects360 * an built-in Linux framebuffer font.361 * b) sti_font=<index>, where index is (1..x) with 1 selecting362 * 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 font382 * 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-in386 * framebuffer font names (e.g. VGA8x16, SUN22x18).387 * This is only available if the fonts have been statically compiled388 * 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 selected391 * 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 the395 * font which the user wants. The sticon driver will try to use396 * a font with this height and width, but if no suitable font is397 * found, sticon will use the default 8x8 font.398 */399__setup("sti_font=", sti_font_setup);400#endif401 402 403 404static 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 431static 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 443static 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 } else483 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_SUPPORT520static struct sti_cooked_font *521sti_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, NULL, NULL);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#else576static struct sti_cooked_font *577sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name)578{579 return NULL;580}581#endif582 583static void sti_dump_font(struct sti_cooked_font *font)584{585#ifdef STI_DUMP_FONT586 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#endif601}602 603static 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 616static 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 else639 return rom->font_start;640}641 642 643static 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 675static 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 0x50710 711void 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}735EXPORT_SYMBOL(sti_font_convert_bytemode);736 737static 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 752static 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 787static 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 802static 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 else816 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_64834 ? "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 }891ok:892 return 1;893 894msg_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 */899out_err:900 kfree(raw);901 kfree(cooked);902 return 0;903}904 905static 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 924test_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 architecture941 * 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 and987 * leaving it enabled would force HPMCs988 */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 1011out_err:1012 kfree(sti);1013 return NULL;1014}1015 1016static 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 ROM1025 * in the additional address field addr[1] while on1026 * older Systems the PDC stores it in page0->proc_sti1027 */1028static 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 1045 sti->dev = &dev->dev;1046 1047 return 0;1048}1049 1050 1051static int sticore_pci_init(struct pci_dev *pd, const struct pci_device_id *ent)1052{1053#ifdef CONFIG_PCI1054 unsigned long fb_base, rom_base;1055 unsigned int fb_len, rom_len;1056 int err;1057 struct sti_struct *sti;1058 1059 err = pci_enable_device(pd);1060 if (err < 0) {1061 dev_err(&pd->dev, "Cannot enable PCI device\n");1062 return err;1063 }1064 1065 fb_base = pci_resource_start(pd, 0);1066 fb_len = pci_resource_len(pd, 0);1067 rom_base = pci_resource_start(pd, PCI_ROM_RESOURCE);1068 rom_len = pci_resource_len(pd, PCI_ROM_RESOURCE);1069 if (rom_base) {1070 pci_write_config_dword(pd, PCI_ROM_ADDRESS, rom_base | PCI_ROM_ADDRESS_ENABLE);1071 pr_debug("STI PCI ROM enabled at 0x%08lx\n", rom_base);1072 }1073 1074 pr_info("STI PCI graphic ROM found at %08lx (%u kB), fb at %08lx (%u MB)\n",1075 rom_base, rom_len/1024, fb_base, fb_len/1024/1024);1076 1077 pr_debug("Trying PCI STI ROM at %08lx, PCI hpa at %08lx\n",1078 rom_base, fb_base);1079 1080 sti = sti_try_rom_generic(rom_base, fb_base, pd);1081 if (sti) {1082 print_pci_hwpath(pd, sti->pa_path);1083 sticore_check_for_default_sti(sti, sti->pa_path);1084 }1085 1086 if (!sti) {1087 pr_warn("Unable to handle STI device '%s'\n", pci_name(pd));1088 return -ENODEV;1089 }1090 1091 sti->dev = &pd->dev;1092#endif /* CONFIG_PCI */1093 1094 return 0;1095}1096 1097 1098static void __exit sticore_pci_remove(struct pci_dev *pd)1099{1100 BUG();1101}1102 1103 1104static struct pci_device_id sti_pci_tbl[] = {1105 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_EG) },1106 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX6) },1107 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX4) },1108 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX2) },1109 { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FXE) },1110 { 0, } /* terminate list */1111};1112MODULE_DEVICE_TABLE(pci, sti_pci_tbl);1113 1114static struct pci_driver pci_sti_driver = {1115 .name = "sti",1116 .id_table = sti_pci_tbl,1117 .probe = sticore_pci_init,1118 .remove = __exit_p(sticore_pci_remove),1119};1120 1121static struct parisc_device_id sti_pa_tbl[] = {1122 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00077 },1123 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00085 },1124 { 0, }1125};1126MODULE_DEVICE_TABLE(parisc, sti_pa_tbl);1127 1128static struct parisc_driver pa_sti_driver __refdata = {1129 .name = "sti",1130 .id_table = sti_pa_tbl,1131 .probe = sticore_pa_init,1132};1133 1134 1135/*1136 * sti_init_roms() - detects all STI ROMs and stores them in sti_roms[]1137 */1138 1139static int sticore_initialized __read_mostly;1140 1141static void sti_init_roms(void)1142{1143 if (sticore_initialized)1144 return;1145 1146 sticore_initialized = 1;1147 1148 pr_info("STI GSC/PCI core graphics driver "1149 STI_DRIVERVERSION "\n");1150 1151 /* Register drivers for native & PCI cards */1152 register_parisc_driver(&pa_sti_driver);1153 WARN_ON(pci_register_driver(&pci_sti_driver));1154 1155 /* if we didn't find the given default sti, take the first one */1156 if (!default_sti)1157 default_sti = sti_roms[0];1158 1159}1160 1161/*1162 * index = 0 gives default sti1163 * index > 0 gives other stis in detection order1164 */1165struct sti_struct * sti_get_rom(unsigned int index)1166{1167 if (!sticore_initialized)1168 sti_init_roms();1169 1170 if (index == 0)1171 return default_sti;1172 1173 if (index > num_sti_roms)1174 return NULL;1175 1176 return sti_roms[index-1];1177}1178EXPORT_SYMBOL(sti_get_rom);1179 1180 1181int sti_call(const struct sti_struct *sti, unsigned long func,1182 const void *flags, void *inptr, void *outptr,1183 struct sti_glob_cfg *glob_cfg)1184{1185 unsigned long _flags = STI_PTR(flags);1186 unsigned long _inptr = STI_PTR(inptr);1187 unsigned long _outptr = STI_PTR(outptr);1188 unsigned long _glob_cfg = STI_PTR(glob_cfg);1189 int ret;1190 1191 /* Check for overflow when using 32bit STI on 64bit kernel. */1192 if (WARN_ONCE(IS_ENABLED(CONFIG_64BIT) && !sti->do_call64 &&1193 (upper_32_bits(_flags) || upper_32_bits(_inptr) ||1194 upper_32_bits(_outptr) || upper_32_bits(_glob_cfg)),1195 "Out of 32bit-range pointers!"))1196 return -1;1197 1198 ret = pdc_sti_call(func, _flags, _inptr, _outptr, _glob_cfg,1199 sti->do_call64);1200 1201 return ret;1202}1203 1204MODULE_AUTHOR("Philipp Rumpf, Helge Deller, Thomas Bogendoerfer");1205MODULE_DESCRIPTION("Core STI driver for HP's NGLE series graphics cards in HP PARISC machines");1206MODULE_LICENSE("GPL v2");1207 1208