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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
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 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
78static 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
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
157void
158sti_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
196void
197sti_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
229void
230sti_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
266void
267sti_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 MODULE
331static 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
350static char *font_name;
351static int font_index,
352 font_height,
353 font_width;
354#ifndef MODULE
355static 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
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 } 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
520static 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#else
576static struct sti_cooked_font *
577sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name)
578{
579 return NULL;
580}
581#endif
582
583static 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
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 else
639 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 0x50
710
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 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 }
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 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
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 ROM
1025 * in the additional address field addr[1] while on
1026 * older Systems the PDC stores it in page0->proc_sti
1027 */
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_PCI
1054 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 sti
1163 * index > 0 gives other stis in detection order
1164 */
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