Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/drivers/video/console/sticore.c - | |
3 | * core code for console driver using HP's STI firmware | |
4 | * | |
5 | * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org> | |
6 | * Copyright (C) 2001-2003 Helge Deller <deller@gmx.de> | |
7 | * Copyright (C) 2001-2002 Thomas Bogendoerfer <tsbogend@alpha.franken.de> | |
8 | * | |
9 | * TODO: | |
10 | * - call STI in virtual mode rather than in real mode | |
11 | * - screen blanking with state_mgmt() in text mode STI ? | |
12 | * - try to make it work on m68k hp workstations ;) | |
13 | * | |
14 | */ | |
15 | ||
1da177e4 LT |
16 | #include <linux/module.h> |
17 | #include <linux/types.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/pci.h> | |
22 | #include <linux/font.h> | |
23 | ||
24 | #include <asm/hardware.h> | |
4a8a0788 | 25 | #include <asm/page.h> |
1da177e4 | 26 | #include <asm/parisc-device.h> |
4a8a0788 | 27 | #include <asm/pdc.h> |
1da177e4 | 28 | #include <asm/cacheflush.h> |
fdac4e69 | 29 | #include <asm/grfioctl.h> |
1da177e4 LT |
30 | |
31 | #include "../sticore.h" | |
32 | ||
33 | #define STI_DRIVERVERSION "Version 0.9a" | |
34 | ||
3d1e412a | 35 | static struct sti_struct *default_sti __read_mostly; |
1da177e4 | 36 | |
cb6fc18e HD |
37 | /* number of STI ROMS found and their ptrs to each struct */ |
38 | static int num_sti_roms __read_mostly; | |
39 | static struct sti_struct *sti_roms[MAX_STI_ROMS] __read_mostly; | |
1da177e4 LT |
40 | |
41 | ||
42 | /* The colour indices used by STI are | |
43 | * 0 - Black | |
44 | * 1 - White | |
45 | * 2 - Red | |
46 | * 3 - Yellow/Brown | |
47 | * 4 - Green | |
48 | * 5 - Cyan | |
49 | * 6 - Blue | |
50 | * 7 - Magenta | |
51 | * | |
52 | * So we have the same colours as VGA (basically one bit each for R, G, B), | |
53 | * but have to translate them, anyway. */ | |
54 | ||
55 | static const u8 col_trans[8] = { | |
56 | 0, 6, 4, 5, | |
57 | 2, 7, 3, 1 | |
58 | }; | |
59 | ||
60 | #define c_fg(sti, c) col_trans[((c>> 8) & 7)] | |
61 | #define c_bg(sti, c) col_trans[((c>>11) & 7)] | |
62 | #define c_index(sti, c) ((c) & 0xff) | |
63 | ||
64 | static const struct sti_init_flags default_init_flags = { | |
65 | .wait = STI_WAIT, | |
66 | .reset = 1, | |
67 | .text = 1, | |
68 | .nontext = 1, | |
69 | .no_chg_bet = 1, | |
70 | .no_chg_bei = 1, | |
71 | .init_cmap_tx = 1, | |
72 | }; | |
73 | ||
3d1e412a | 74 | static int sti_init_graph(struct sti_struct *sti) |
1da177e4 LT |
75 | { |
76 | struct sti_init_inptr_ext inptr_ext = { 0, }; | |
77 | struct sti_init_inptr inptr = { | |
78 | .text_planes = 3, /* # of text planes (max 3 for STI) */ | |
79 | .ext_ptr = STI_PTR(&inptr_ext) | |
80 | }; | |
81 | struct sti_init_outptr outptr = { 0, }; | |
82 | unsigned long flags; | |
83 | int ret; | |
84 | ||
85 | spin_lock_irqsave(&sti->lock, flags); | |
86 | ||
87 | ret = STI_CALL(sti->init_graph, &default_init_flags, &inptr, | |
88 | &outptr, sti->glob_cfg); | |
89 | ||
90 | spin_unlock_irqrestore(&sti->lock, flags); | |
91 | ||
92 | if (ret < 0) { | |
93 | printk(KERN_ERR "STI init_graph failed (ret %d, errno %d)\n",ret,outptr.errno); | |
94 | return -1; | |
95 | } | |
96 | ||
97 | sti->text_planes = outptr.text_planes; | |
98 | return 0; | |
99 | } | |
100 | ||
101 | static const struct sti_conf_flags default_conf_flags = { | |
102 | .wait = STI_WAIT, | |
103 | }; | |
104 | ||
3d1e412a | 105 | static void sti_inq_conf(struct sti_struct *sti) |
1da177e4 LT |
106 | { |
107 | struct sti_conf_inptr inptr = { 0, }; | |
108 | unsigned long flags; | |
109 | s32 ret; | |
110 | ||
111 | sti->outptr.ext_ptr = STI_PTR(&sti->outptr_ext); | |
112 | ||
113 | do { | |
114 | spin_lock_irqsave(&sti->lock, flags); | |
115 | ret = STI_CALL(sti->inq_conf, &default_conf_flags, | |
116 | &inptr, &sti->outptr, sti->glob_cfg); | |
117 | spin_unlock_irqrestore(&sti->lock, flags); | |
118 | } while (ret == 1); | |
119 | } | |
120 | ||
121 | static const struct sti_font_flags default_font_flags = { | |
122 | .wait = STI_WAIT, | |
123 | .non_text = 0, | |
124 | }; | |
125 | ||
126 | void | |
127 | sti_putc(struct sti_struct *sti, int c, int y, int x) | |
128 | { | |
129 | struct sti_font_inptr inptr = { | |
130 | .font_start_addr= STI_PTR(sti->font->raw), | |
131 | .index = c_index(sti, c), | |
132 | .fg_color = c_fg(sti, c), | |
133 | .bg_color = c_bg(sti, c), | |
134 | .dest_x = x * sti->font_width, | |
135 | .dest_y = y * sti->font_height, | |
136 | }; | |
137 | struct sti_font_outptr outptr = { 0, }; | |
138 | s32 ret; | |
139 | unsigned long flags; | |
140 | ||
141 | do { | |
142 | spin_lock_irqsave(&sti->lock, flags); | |
143 | ret = STI_CALL(sti->font_unpmv, &default_font_flags, | |
144 | &inptr, &outptr, sti->glob_cfg); | |
145 | spin_unlock_irqrestore(&sti->lock, flags); | |
146 | } while (ret == 1); | |
147 | } | |
148 | ||
149 | static const struct sti_blkmv_flags clear_blkmv_flags = { | |
150 | .wait = STI_WAIT, | |
151 | .color = 1, | |
152 | .clear = 1, | |
153 | }; | |
154 | ||
155 | void | |
156 | sti_set(struct sti_struct *sti, int src_y, int src_x, | |
157 | int height, int width, u8 color) | |
158 | { | |
159 | struct sti_blkmv_inptr inptr = { | |
160 | .fg_color = color, | |
161 | .bg_color = color, | |
162 | .src_x = src_x, | |
163 | .src_y = src_y, | |
164 | .dest_x = src_x, | |
165 | .dest_y = src_y, | |
166 | .width = width, | |
167 | .height = height, | |
168 | }; | |
169 | struct sti_blkmv_outptr outptr = { 0, }; | |
170 | s32 ret; | |
171 | unsigned long flags; | |
172 | ||
173 | do { | |
174 | spin_lock_irqsave(&sti->lock, flags); | |
175 | ret = STI_CALL(sti->block_move, &clear_blkmv_flags, | |
176 | &inptr, &outptr, sti->glob_cfg); | |
177 | spin_unlock_irqrestore(&sti->lock, flags); | |
178 | } while (ret == 1); | |
179 | } | |
180 | ||
181 | void | |
182 | sti_clear(struct sti_struct *sti, int src_y, int src_x, | |
183 | int height, int width, int c) | |
184 | { | |
185 | struct sti_blkmv_inptr inptr = { | |
186 | .fg_color = c_fg(sti, c), | |
187 | .bg_color = c_bg(sti, c), | |
188 | .src_x = src_x * sti->font_width, | |
189 | .src_y = src_y * sti->font_height, | |
190 | .dest_x = src_x * sti->font_width, | |
191 | .dest_y = src_y * sti->font_height, | |
192 | .width = width * sti->font_width, | |
193 | .height = height* sti->font_height, | |
194 | }; | |
195 | struct sti_blkmv_outptr outptr = { 0, }; | |
196 | s32 ret; | |
197 | unsigned long flags; | |
198 | ||
199 | do { | |
200 | spin_lock_irqsave(&sti->lock, flags); | |
201 | ret = STI_CALL(sti->block_move, &clear_blkmv_flags, | |
202 | &inptr, &outptr, sti->glob_cfg); | |
203 | spin_unlock_irqrestore(&sti->lock, flags); | |
204 | } while (ret == 1); | |
205 | } | |
206 | ||
207 | static const struct sti_blkmv_flags default_blkmv_flags = { | |
208 | .wait = STI_WAIT, | |
209 | }; | |
210 | ||
211 | void | |
212 | sti_bmove(struct sti_struct *sti, int src_y, int src_x, | |
213 | int dst_y, int dst_x, int height, int width) | |
214 | { | |
215 | struct sti_blkmv_inptr inptr = { | |
216 | .src_x = src_x * sti->font_width, | |
217 | .src_y = src_y * sti->font_height, | |
218 | .dest_x = dst_x * sti->font_width, | |
219 | .dest_y = dst_y * sti->font_height, | |
220 | .width = width * sti->font_width, | |
221 | .height = height* sti->font_height, | |
222 | }; | |
223 | struct sti_blkmv_outptr outptr = { 0, }; | |
224 | s32 ret; | |
225 | unsigned long flags; | |
226 | ||
227 | do { | |
228 | spin_lock_irqsave(&sti->lock, flags); | |
229 | ret = STI_CALL(sti->block_move, &default_blkmv_flags, | |
230 | &inptr, &outptr, sti->glob_cfg); | |
231 | spin_unlock_irqrestore(&sti->lock, flags); | |
232 | } while (ret == 1); | |
233 | } | |
234 | ||
235 | ||
03b18f1b | 236 | static void sti_flush(unsigned long start, unsigned long end) |
1da177e4 | 237 | { |
03b18f1b | 238 | flush_icache_range(start, end); |
1da177e4 LT |
239 | } |
240 | ||
3d1e412a AB |
241 | static void __devinit sti_rom_copy(unsigned long base, unsigned long count, |
242 | void *dest) | |
1da177e4 | 243 | { |
1da177e4 LT |
244 | unsigned long dest_start = (unsigned long) dest; |
245 | ||
246 | /* this still needs to be revisited (see arch/parisc/mm/init.c:246) ! */ | |
247 | while (count >= 4) { | |
248 | count -= 4; | |
249 | *(u32 *)dest = gsc_readl(base); | |
250 | base += 4; | |
251 | dest += 4; | |
252 | } | |
253 | while (count) { | |
254 | count--; | |
255 | *(u8 *)dest = gsc_readb(base); | |
256 | base++; | |
257 | dest++; | |
258 | } | |
259 | ||
03b18f1b | 260 | sti_flush(dest_start, (unsigned long)dest); |
1da177e4 LT |
261 | } |
262 | ||
263 | ||
264 | ||
265 | ||
cb6fc18e | 266 | static char default_sti_path[21] __read_mostly; |
1da177e4 LT |
267 | |
268 | #ifndef MODULE | |
48a7d5c6 | 269 | static int __devinit sti_setup(char *str) |
1da177e4 LT |
270 | { |
271 | if (str) | |
272 | strlcpy (default_sti_path, str, sizeof (default_sti_path)); | |
273 | ||
9b41046c | 274 | return 1; |
1da177e4 LT |
275 | } |
276 | ||
277 | /* Assuming the machine has multiple STI consoles (=graphic cards) which | |
278 | * all get detected by sticon, the user may define with the linux kernel | |
279 | * parameter sti=<x> which of them will be the initial boot-console. | |
280 | * <x> is a number between 0 and MAX_STI_ROMS, with 0 as the default | |
281 | * STI screen. | |
282 | */ | |
283 | __setup("sti=", sti_setup); | |
284 | #endif | |
285 | ||
286 | ||
287 | ||
48a7d5c6 HD |
288 | static char __devinitdata *font_name[MAX_STI_ROMS] = { "VGA8x16", }; |
289 | static int __devinitdata font_index[MAX_STI_ROMS], | |
290 | font_height[MAX_STI_ROMS], | |
291 | font_width[MAX_STI_ROMS]; | |
1da177e4 | 292 | #ifndef MODULE |
48a7d5c6 | 293 | static int __devinit sti_font_setup(char *str) |
1da177e4 LT |
294 | { |
295 | char *x; | |
296 | int i = 0; | |
297 | ||
298 | /* we accept sti_font=VGA8x16, sti_font=10x20, sti_font=10*20 | |
299 | * or sti_font=7 style command lines. */ | |
300 | ||
301 | while (i<MAX_STI_ROMS && str && *str) { | |
302 | if (*str>='0' && *str<='9') { | |
303 | if ((x = strchr(str, 'x')) || (x = strchr(str, '*'))) { | |
304 | font_height[i] = simple_strtoul(str, NULL, 0); | |
305 | font_width[i] = simple_strtoul(x+1, NULL, 0); | |
306 | } else { | |
307 | font_index[i] = simple_strtoul(str, NULL, 0); | |
308 | } | |
309 | } else { | |
310 | font_name[i] = str; /* fb font name */ | |
311 | } | |
312 | ||
313 | if ((x = strchr(str, ','))) | |
314 | *x++ = 0; | |
315 | str = x; | |
316 | ||
317 | i++; | |
318 | } | |
319 | ||
9b41046c | 320 | return 1; |
1da177e4 LT |
321 | } |
322 | ||
323 | /* The optional linux kernel parameter "sti_font" defines which font | |
324 | * should be used by the sticon driver to draw characters to the screen. | |
325 | * Possible values are: | |
326 | * - sti_font=<fb_fontname>: | |
327 | * <fb_fontname> is the name of one of the linux-kernel built-in | |
328 | * framebuffer font names (e.g. VGA8x16, SUN22x18). | |
329 | * This is only available if the fonts have been statically compiled | |
330 | * in with e.g. the CONFIG_FONT_8x16 or CONFIG_FONT_SUN12x22 options. | |
331 | * - sti_font=<number> | |
332 | * most STI ROMs have built-in HP specific fonts, which can be selected | |
333 | * by giving the desired number to the sticon driver. | |
334 | * NOTE: This number is machine and STI ROM dependend. | |
335 | * - sti_font=<height>x<width> (e.g. sti_font=16x8) | |
336 | * <height> and <width> gives hints to the height and width of the | |
337 | * font which the user wants. The sticon driver will try to use | |
338 | * a font with this height and width, but if no suitable font is | |
339 | * found, sticon will use the default 8x8 font. | |
340 | */ | |
341 | __setup("sti_font=", sti_font_setup); | |
342 | #endif | |
343 | ||
344 | ||
345 | ||
48a7d5c6 | 346 | static void __devinit |
1da177e4 LT |
347 | sti_dump_globcfg(struct sti_glob_cfg *glob_cfg, unsigned int sti_mem_request) |
348 | { | |
349 | struct sti_glob_cfg_ext *cfg; | |
350 | ||
351 | DPRINTK((KERN_INFO | |
352 | "%d text planes\n" | |
353 | "%4d x %4d screen resolution\n" | |
354 | "%4d x %4d offscreen\n" | |
355 | "%4d x %4d layout\n" | |
356 | "regions at %08x %08x %08x %08x\n" | |
357 | "regions at %08x %08x %08x %08x\n" | |
358 | "reent_lvl %d\n" | |
359 | "save_addr %08x\n", | |
360 | glob_cfg->text_planes, | |
361 | glob_cfg->onscreen_x, glob_cfg->onscreen_y, | |
362 | glob_cfg->offscreen_x, glob_cfg->offscreen_y, | |
363 | glob_cfg->total_x, glob_cfg->total_y, | |
364 | glob_cfg->region_ptrs[0], glob_cfg->region_ptrs[1], | |
365 | glob_cfg->region_ptrs[2], glob_cfg->region_ptrs[3], | |
366 | glob_cfg->region_ptrs[4], glob_cfg->region_ptrs[5], | |
367 | glob_cfg->region_ptrs[6], glob_cfg->region_ptrs[7], | |
368 | glob_cfg->reent_lvl, | |
369 | glob_cfg->save_addr)); | |
370 | ||
371 | /* dump extended cfg */ | |
857600c7 | 372 | cfg = PTR_STI((unsigned long)glob_cfg->ext_ptr); |
1da177e4 LT |
373 | DPRINTK(( KERN_INFO |
374 | "monitor %d\n" | |
375 | "in friendly mode: %d\n" | |
376 | "power consumption %d watts\n" | |
377 | "freq ref %d\n" | |
378 | "sti_mem_addr %08x (size=%d bytes)\n", | |
379 | cfg->curr_mon, | |
380 | cfg->friendly_boot, | |
381 | cfg->power, | |
382 | cfg->freq_ref, | |
383 | cfg->sti_mem_addr, sti_mem_request)); | |
384 | } | |
385 | ||
48a7d5c6 | 386 | static void __devinit |
1da177e4 LT |
387 | sti_dump_outptr(struct sti_struct *sti) |
388 | { | |
389 | DPRINTK((KERN_INFO | |
390 | "%d bits per pixel\n" | |
391 | "%d used bits\n" | |
392 | "%d planes\n" | |
393 | "attributes %08x\n", | |
394 | sti->outptr.bits_per_pixel, | |
395 | sti->outptr.bits_used, | |
396 | sti->outptr.planes, | |
397 | sti->outptr.attributes)); | |
398 | } | |
399 | ||
48a7d5c6 | 400 | static int __devinit |
1da177e4 LT |
401 | sti_init_glob_cfg(struct sti_struct *sti, |
402 | unsigned long rom_address, unsigned long hpa) | |
403 | { | |
404 | struct sti_glob_cfg *glob_cfg; | |
405 | struct sti_glob_cfg_ext *glob_cfg_ext; | |
406 | void *save_addr; | |
407 | void *sti_mem_addr; | |
408 | const int save_addr_size = 1024; /* XXX */ | |
409 | int i; | |
410 | ||
411 | if (!sti->sti_mem_request) | |
412 | sti->sti_mem_request = 256; /* STI default */ | |
413 | ||
cb6fc18e HD |
414 | glob_cfg = kzalloc(sizeof(*sti->glob_cfg), GFP_KERNEL); |
415 | glob_cfg_ext = kzalloc(sizeof(*glob_cfg_ext), GFP_KERNEL); | |
416 | save_addr = kzalloc(save_addr_size, GFP_KERNEL); | |
417 | sti_mem_addr = kzalloc(sti->sti_mem_request, GFP_KERNEL); | |
1da177e4 LT |
418 | |
419 | if (!(glob_cfg && glob_cfg_ext && save_addr && sti_mem_addr)) { | |
420 | kfree(glob_cfg); | |
421 | kfree(glob_cfg_ext); | |
422 | kfree(save_addr); | |
423 | kfree(sti_mem_addr); | |
424 | return -ENOMEM; | |
425 | } | |
426 | ||
1da177e4 LT |
427 | glob_cfg->ext_ptr = STI_PTR(glob_cfg_ext); |
428 | glob_cfg->save_addr = STI_PTR(save_addr); | |
429 | for (i=0; i<8; i++) { | |
430 | unsigned long newhpa, len; | |
431 | ||
432 | if (sti->pd) { | |
433 | unsigned char offs = sti->rm_entry[i]; | |
434 | ||
435 | if (offs == 0) | |
436 | continue; | |
437 | if (offs != PCI_ROM_ADDRESS && | |
438 | (offs < PCI_BASE_ADDRESS_0 || | |
439 | offs > PCI_BASE_ADDRESS_5)) { | |
440 | printk (KERN_WARNING | |
af901ca1 | 441 | "STI pci region mapping for region %d (%02x) can't be mapped\n", |
1da177e4 LT |
442 | i,sti->rm_entry[i]); |
443 | continue; | |
444 | } | |
445 | newhpa = pci_resource_start (sti->pd, (offs - PCI_BASE_ADDRESS_0) / 4); | |
446 | } else | |
447 | newhpa = (i == 0) ? rom_address : hpa; | |
448 | ||
449 | sti->regions_phys[i] = | |
450 | REGION_OFFSET_TO_PHYS(sti->regions[i], newhpa); | |
451 | ||
1da177e4 | 452 | len = sti->regions[i].region_desc.length * 4096; |
1da177e4 LT |
453 | if (len) |
454 | glob_cfg->region_ptrs[i] = sti->regions_phys[i]; | |
1da177e4 | 455 | |
857600c7 | 456 | DPRINTK(("region #%d: phys %08lx, region_ptr %08x, len=%lukB, " |
1da177e4 LT |
457 | "btlb=%d, sysonly=%d, cache=%d, last=%d\n", |
458 | i, sti->regions_phys[i], glob_cfg->region_ptrs[i], | |
459 | len/1024, | |
460 | sti->regions[i].region_desc.btlb, | |
461 | sti->regions[i].region_desc.sys_only, | |
462 | sti->regions[i].region_desc.cache, | |
463 | sti->regions[i].region_desc.last)); | |
464 | ||
465 | /* last entry reached ? */ | |
466 | if (sti->regions[i].region_desc.last) | |
467 | break; | |
468 | } | |
469 | ||
470 | if (++i<8 && sti->regions[i].region) | |
471 | printk(KERN_WARNING "%s: *future ptr (0x%8x) not yet supported !\n", | |
472 | __FILE__, sti->regions[i].region); | |
473 | ||
474 | glob_cfg_ext->sti_mem_addr = STI_PTR(sti_mem_addr); | |
475 | ||
476 | sti->glob_cfg = glob_cfg; | |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
481 | #ifdef CONFIG_FB | |
3d1e412a AB |
482 | static struct sti_cooked_font __devinit |
483 | *sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name) | |
1da177e4 | 484 | { |
cb6fc18e | 485 | const struct font_desc *fbfont; |
1da177e4 LT |
486 | unsigned int size, bpc; |
487 | void *dest; | |
488 | struct sti_rom_font *nf; | |
489 | struct sti_cooked_font *cooked_font; | |
490 | ||
491 | if (!fbfont_name || !strlen(fbfont_name)) | |
951a0150 | 492 | return NULL; |
1da177e4 LT |
493 | fbfont = find_font(fbfont_name); |
494 | if (!fbfont) | |
2d2699d9 | 495 | fbfont = get_default_font(1024,768, ~(u32)0, ~(u32)0); |
1da177e4 | 496 | if (!fbfont) |
951a0150 | 497 | return NULL; |
1da177e4 LT |
498 | |
499 | DPRINTK((KERN_DEBUG "selected %dx%d fb-font %s\n", | |
500 | fbfont->width, fbfont->height, fbfont->name)); | |
501 | ||
502 | bpc = ((fbfont->width+7)/8) * fbfont->height; | |
503 | size = bpc * 256; | |
504 | size += sizeof(struct sti_rom_font); | |
505 | ||
cb6fc18e | 506 | nf = kzalloc(size, GFP_KERNEL); |
1da177e4 | 507 | if (!nf) |
951a0150 | 508 | return NULL; |
1da177e4 LT |
509 | |
510 | nf->first_char = 0; | |
511 | nf->last_char = 255; | |
512 | nf->width = fbfont->width; | |
513 | nf->height = fbfont->height; | |
514 | nf->font_type = STI_FONT_HPROMAN8; | |
515 | nf->bytes_per_char = bpc; | |
516 | nf->next_font = 0; | |
517 | nf->underline_height = 1; | |
518 | nf->underline_pos = fbfont->height - nf->underline_height; | |
519 | ||
520 | dest = nf; | |
521 | dest += sizeof(struct sti_rom_font); | |
522 | memcpy(dest, fbfont->data, bpc*256); | |
523 | ||
cb6fc18e | 524 | cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); |
1da177e4 | 525 | if (!cooked_font) { |
951a0150 MW |
526 | kfree(nf); |
527 | return NULL; | |
1da177e4 LT |
528 | } |
529 | ||
530 | cooked_font->raw = nf; | |
531 | cooked_font->next_font = NULL; | |
532 | ||
533 | cooked_rom->font_start = cooked_font; | |
534 | ||
535 | return cooked_font; | |
536 | } | |
537 | #else | |
3d1e412a AB |
538 | static struct sti_cooked_font __devinit |
539 | *sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name) | |
1da177e4 LT |
540 | { |
541 | return NULL; | |
542 | } | |
543 | #endif | |
544 | ||
3d1e412a AB |
545 | static struct sti_cooked_font __devinit |
546 | *sti_select_font(struct sti_cooked_rom *rom, | |
547 | int (*search_font_fnc)(struct sti_cooked_rom *, int, int)) | |
1da177e4 LT |
548 | { |
549 | struct sti_cooked_font *font; | |
550 | int i; | |
551 | int index = num_sti_roms; | |
552 | ||
553 | /* check for framebuffer-font first */ | |
554 | if ((font = sti_select_fbfont(rom, font_name[index]))) | |
555 | return font; | |
556 | ||
557 | if (font_width[index] && font_height[index]) | |
558 | font_index[index] = search_font_fnc(rom, | |
559 | font_height[index], font_width[index]); | |
560 | ||
561 | for (font = rom->font_start, i = font_index[index]; | |
562 | font && (i > 0); | |
563 | font = font->next_font, i--); | |
564 | ||
565 | if (font) | |
566 | return font; | |
567 | else | |
568 | return rom->font_start; | |
569 | } | |
570 | ||
571 | ||
48a7d5c6 | 572 | static void __devinit |
1da177e4 LT |
573 | sti_dump_rom(struct sti_rom *rom) |
574 | { | |
951a0150 | 575 | printk(KERN_INFO " id %04x-%04x, conforms to spec rev. %d.%02x\n", |
1da177e4 LT |
576 | rom->graphics_id[0], |
577 | rom->graphics_id[1], | |
578 | rom->revno[0] >> 4, | |
579 | rom->revno[0] & 0x0f); | |
580 | DPRINTK((" supports %d monitors\n", rom->num_mons)); | |
581 | DPRINTK((" font start %08x\n", rom->font_start)); | |
582 | DPRINTK((" region list %08x\n", rom->region_list)); | |
583 | DPRINTK((" init_graph %08x\n", rom->init_graph)); | |
584 | DPRINTK((" bus support %02x\n", rom->bus_support)); | |
585 | DPRINTK((" ext bus support %02x\n", rom->ext_bus_support)); | |
586 | DPRINTK((" alternate code type %d\n", rom->alt_code_type)); | |
587 | } | |
588 | ||
589 | ||
48a7d5c6 | 590 | static int __devinit |
1da177e4 LT |
591 | sti_cook_fonts(struct sti_cooked_rom *cooked_rom, |
592 | struct sti_rom *raw_rom) | |
593 | { | |
594 | struct sti_rom_font *raw_font, *font_start; | |
595 | struct sti_cooked_font *cooked_font; | |
596 | ||
cb6fc18e | 597 | cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); |
1da177e4 LT |
598 | if (!cooked_font) |
599 | return 0; | |
600 | ||
601 | cooked_rom->font_start = cooked_font; | |
602 | ||
603 | raw_font = ((void *)raw_rom) + (raw_rom->font_start); | |
604 | ||
605 | font_start = raw_font; | |
606 | cooked_font->raw = raw_font; | |
607 | ||
608 | while (raw_font->next_font) { | |
609 | raw_font = ((void *)font_start) + (raw_font->next_font); | |
610 | ||
cb6fc18e | 611 | cooked_font->next_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); |
1da177e4 LT |
612 | if (!cooked_font->next_font) |
613 | return 1; | |
614 | ||
615 | cooked_font = cooked_font->next_font; | |
616 | ||
617 | cooked_font->raw = raw_font; | |
618 | } | |
619 | ||
620 | cooked_font->next_font = NULL; | |
621 | return 1; | |
622 | } | |
623 | ||
624 | ||
48a7d5c6 | 625 | static int __devinit |
1da177e4 LT |
626 | sti_search_font(struct sti_cooked_rom *rom, int height, int width) |
627 | { | |
628 | struct sti_cooked_font *font; | |
629 | int i = 0; | |
630 | ||
951a0150 MW |
631 | for (font = rom->font_start; font; font = font->next_font, i++) { |
632 | if ((font->raw->width == width) && | |
633 | (font->raw->height == height)) | |
1da177e4 LT |
634 | return i; |
635 | } | |
636 | return 0; | |
637 | } | |
638 | ||
951a0150 MW |
639 | #define BMODE_RELOCATE(offset) offset = (offset) / 4; |
640 | #define BMODE_LAST_ADDR_OFFS 0x50 | |
1da177e4 | 641 | |
48a7d5c6 | 642 | static void * __devinit |
1da177e4 LT |
643 | sti_bmode_font_raw(struct sti_cooked_font *f) |
644 | { | |
645 | unsigned char *n, *p, *q; | |
646 | int size = f->raw->bytes_per_char*256+sizeof(struct sti_rom_font); | |
647 | ||
cb6fc18e | 648 | n = kzalloc (4*size, GFP_KERNEL); |
1da177e4 LT |
649 | if (!n) |
650 | return NULL; | |
1da177e4 LT |
651 | p = n + 3; |
652 | q = (unsigned char *)f->raw; | |
653 | while (size--) { | |
654 | *p = *q++; | |
655 | p+=4; | |
656 | } | |
657 | return n + 3; | |
658 | } | |
659 | ||
48a7d5c6 | 660 | static void __devinit |
1da177e4 LT |
661 | sti_bmode_rom_copy(unsigned long base, unsigned long count, void *dest) |
662 | { | |
1da177e4 LT |
663 | unsigned long dest_start = (unsigned long) dest; |
664 | ||
665 | while (count) { | |
666 | count--; | |
667 | *(u8 *)dest = gsc_readl(base); | |
668 | base += 4; | |
669 | dest++; | |
670 | } | |
03b18f1b KM |
671 | |
672 | sti_flush(dest_start, (unsigned long)dest); | |
1da177e4 LT |
673 | } |
674 | ||
48a7d5c6 | 675 | static struct sti_rom * __devinit |
1da177e4 LT |
676 | sti_get_bmode_rom (unsigned long address) |
677 | { | |
678 | struct sti_rom *raw; | |
679 | u32 size; | |
951a0150 MW |
680 | struct sti_rom_font *raw_font, *font_start; |
681 | ||
1da177e4 | 682 | sti_bmode_rom_copy(address + BMODE_LAST_ADDR_OFFS, sizeof(size), &size); |
951a0150 MW |
683 | |
684 | size = (size+3) / 4; | |
1da177e4 LT |
685 | raw = kmalloc(size, GFP_KERNEL); |
686 | if (raw) { | |
951a0150 MW |
687 | sti_bmode_rom_copy(address, size, raw); |
688 | memmove (&raw->res004, &raw->type[0], 0x3c); | |
689 | raw->type[3] = raw->res004; | |
1da177e4 | 690 | |
951a0150 MW |
691 | BMODE_RELOCATE (raw->region_list); |
692 | BMODE_RELOCATE (raw->font_start); | |
1da177e4 | 693 | |
951a0150 MW |
694 | BMODE_RELOCATE (raw->init_graph); |
695 | BMODE_RELOCATE (raw->state_mgmt); | |
696 | BMODE_RELOCATE (raw->font_unpmv); | |
697 | BMODE_RELOCATE (raw->block_move); | |
698 | BMODE_RELOCATE (raw->inq_conf); | |
1da177e4 | 699 | |
951a0150 MW |
700 | raw_font = ((void *)raw) + raw->font_start; |
701 | font_start = raw_font; | |
1da177e4 | 702 | |
951a0150 MW |
703 | while (raw_font->next_font) { |
704 | BMODE_RELOCATE (raw_font->next_font); | |
705 | raw_font = ((void *)font_start) + raw_font->next_font; | |
706 | } | |
1da177e4 | 707 | } |
951a0150 | 708 | return raw; |
1da177e4 LT |
709 | } |
710 | ||
3d1e412a | 711 | static struct sti_rom __devinit *sti_get_wmode_rom(unsigned long address) |
1da177e4 LT |
712 | { |
713 | struct sti_rom *raw; | |
714 | unsigned long size; | |
951a0150 | 715 | |
1da177e4 LT |
716 | /* read the ROM size directly from the struct in ROM */ |
717 | size = gsc_readl(address + offsetof(struct sti_rom,last_addr)); | |
718 | ||
719 | raw = kmalloc(size, GFP_KERNEL); | |
951a0150 MW |
720 | if (raw) |
721 | sti_rom_copy(address, size, raw); | |
1da177e4 | 722 | |
951a0150 | 723 | return raw; |
1da177e4 LT |
724 | } |
725 | ||
3d1e412a AB |
726 | static int __devinit sti_read_rom(int wordmode, struct sti_struct *sti, |
727 | unsigned long address) | |
1da177e4 LT |
728 | { |
729 | struct sti_cooked_rom *cooked; | |
730 | struct sti_rom *raw = NULL; | |
fdac4e69 | 731 | unsigned long revno; |
1da177e4 LT |
732 | |
733 | cooked = kmalloc(sizeof *cooked, GFP_KERNEL); | |
734 | if (!cooked) | |
735 | goto out_err; | |
736 | ||
951a0150 MW |
737 | if (wordmode) |
738 | raw = sti_get_wmode_rom (address); | |
739 | else | |
740 | raw = sti_get_bmode_rom (address); | |
741 | ||
742 | if (!raw) | |
743 | goto out_err; | |
1da177e4 | 744 | |
1da177e4 LT |
745 | if (!sti_cook_fonts(cooked, raw)) { |
746 | printk(KERN_ERR "No font found for STI at %08lx\n", address); | |
747 | goto out_err; | |
748 | } | |
749 | ||
750 | if (raw->region_list) | |
751 | memcpy(sti->regions, ((void *)raw)+raw->region_list, sizeof(sti->regions)); | |
752 | ||
753 | address = (unsigned long) STI_PTR(raw); | |
754 | ||
755 | sti->font_unpmv = address + (raw->font_unpmv & 0x03ffffff); | |
756 | sti->block_move = address + (raw->block_move & 0x03ffffff); | |
757 | sti->init_graph = address + (raw->init_graph & 0x03ffffff); | |
758 | sti->inq_conf = address + (raw->inq_conf & 0x03ffffff); | |
759 | ||
760 | sti->rom = cooked; | |
761 | sti->rom->raw = raw; | |
762 | ||
763 | sti->font = sti_select_font(sti->rom, sti_search_font); | |
764 | sti->font_width = sti->font->raw->width; | |
765 | sti->font_height = sti->font->raw->height; | |
766 | if (!wordmode) | |
951a0150 | 767 | sti->font->raw = sti_bmode_font_raw(sti->font); |
1da177e4 LT |
768 | |
769 | sti->sti_mem_request = raw->sti_mem_req; | |
770 | sti->graphics_id[0] = raw->graphics_id[0]; | |
771 | sti->graphics_id[1] = raw->graphics_id[1]; | |
772 | ||
773 | sti_dump_rom(raw); | |
fdac4e69 HD |
774 | |
775 | /* check if the ROM routines in this card are compatible */ | |
776 | if (wordmode || sti->graphics_id[1] != 0x09A02587) | |
777 | goto ok; | |
778 | ||
779 | revno = (raw->revno[0] << 8) | raw->revno[1]; | |
780 | ||
781 | switch (sti->graphics_id[0]) { | |
782 | case S9000_ID_HCRX: | |
783 | /* HyperA or HyperB ? */ | |
784 | if (revno == 0x8408 || revno == 0x840b) | |
785 | goto msg_not_supported; | |
786 | break; | |
787 | case CRT_ID_THUNDER: | |
788 | if (revno == 0x8509) | |
789 | goto msg_not_supported; | |
790 | break; | |
791 | case CRT_ID_THUNDER2: | |
792 | if (revno == 0x850c) | |
793 | goto msg_not_supported; | |
794 | } | |
795 | ok: | |
1da177e4 LT |
796 | return 1; |
797 | ||
fdac4e69 HD |
798 | msg_not_supported: |
799 | printk(KERN_ERR "Sorry, this GSC/STI card is not yet supported.\n"); | |
800 | printk(KERN_ERR "Please see http://parisc-linux.org/faq/" | |
801 | "graphics-howto.html for more info.\n"); | |
802 | /* fall through */ | |
1da177e4 LT |
803 | out_err: |
804 | kfree(raw); | |
805 | kfree(cooked); | |
806 | return 0; | |
807 | } | |
808 | ||
48a7d5c6 | 809 | static struct sti_struct * __devinit |
1da177e4 LT |
810 | sti_try_rom_generic(unsigned long address, unsigned long hpa, struct pci_dev *pd) |
811 | { | |
812 | struct sti_struct *sti; | |
813 | int ok; | |
814 | u32 sig; | |
815 | ||
816 | if (num_sti_roms >= MAX_STI_ROMS) { | |
951a0150 MW |
817 | printk(KERN_WARNING "maximum number of STI ROMS reached !\n"); |
818 | return NULL; | |
1da177e4 LT |
819 | } |
820 | ||
cb6fc18e | 821 | sti = kzalloc(sizeof(*sti), GFP_KERNEL); |
1da177e4 | 822 | if (!sti) { |
951a0150 MW |
823 | printk(KERN_ERR "Not enough memory !\n"); |
824 | return NULL; | |
1da177e4 | 825 | } |
951a0150 | 826 | |
1da177e4 LT |
827 | spin_lock_init(&sti->lock); |
828 | ||
829 | test_rom: | |
830 | /* if we can't read the ROM, bail out early. Not being able | |
831 | * to read the hpa is okay, for romless sti */ | |
832 | if (pdc_add_valid(address)) | |
833 | goto out_err; | |
834 | ||
835 | sig = gsc_readl(address); | |
836 | ||
837 | /* check for a PCI ROM structure */ | |
838 | if ((le32_to_cpu(sig)==0xaa55)) { | |
839 | unsigned int i, rm_offset; | |
840 | u32 *rm; | |
841 | i = gsc_readl(address+0x04); | |
842 | if (i != 1) { | |
843 | /* The ROM could have multiple architecture | |
844 | * dependent images (e.g. i386, parisc,...) */ | |
845 | printk(KERN_WARNING | |
846 | "PCI ROM is not a STI ROM type image (0x%8x)\n", i); | |
847 | goto out_err; | |
848 | } | |
849 | ||
850 | sti->pd = pd; | |
851 | ||
852 | i = gsc_readl(address+0x0c); | |
853 | DPRINTK(("PCI ROM size (from header) = %d kB\n", | |
854 | le16_to_cpu(i>>16)*512/1024)); | |
855 | rm_offset = le16_to_cpu(i & 0xffff); | |
856 | if (rm_offset) { | |
857 | /* read 16 bytes from the pci region mapper array */ | |
858 | rm = (u32*) &sti->rm_entry; | |
859 | *rm++ = gsc_readl(address+rm_offset+0x00); | |
860 | *rm++ = gsc_readl(address+rm_offset+0x04); | |
861 | *rm++ = gsc_readl(address+rm_offset+0x08); | |
862 | *rm++ = gsc_readl(address+rm_offset+0x0c); | |
863 | DPRINTK(("PCI region Mapper offset = %08x: ", | |
864 | rm_offset)); | |
865 | for (i=0; i<16; i++) | |
866 | DPRINTK(("%02x ", sti->rm_entry[i])); | |
867 | DPRINTK(("\n")); | |
868 | } | |
869 | ||
870 | address += le32_to_cpu(gsc_readl(address+8)); | |
871 | DPRINTK(("sig %04x, PCI STI ROM at %08lx\n", sig, address)); | |
872 | goto test_rom; | |
873 | } | |
874 | ||
875 | ok = 0; | |
876 | ||
877 | if ((sig & 0xff) == 0x01) { | |
878 | DPRINTK((" byte mode ROM at %08lx, hpa at %08lx\n", | |
879 | address, hpa)); | |
880 | ok = sti_read_rom(0, sti, address); | |
881 | } | |
882 | ||
883 | if ((sig & 0xffff) == 0x0303) { | |
884 | DPRINTK((" word mode ROM at %08lx, hpa at %08lx\n", | |
885 | address, hpa)); | |
886 | ok = sti_read_rom(1, sti, address); | |
887 | } | |
888 | ||
889 | if (!ok) | |
890 | goto out_err; | |
891 | ||
892 | if (sti_init_glob_cfg(sti, address, hpa)) | |
893 | goto out_err; /* not enough memory */ | |
894 | ||
895 | /* disable STI PCI ROM. ROM and card RAM overlap and | |
896 | * leaving it enabled would force HPMCs | |
897 | */ | |
898 | if (sti->pd) { | |
899 | unsigned long rom_base; | |
900 | rom_base = pci_resource_start(sti->pd, PCI_ROM_RESOURCE); | |
901 | pci_write_config_dword(sti->pd, PCI_ROM_ADDRESS, rom_base & ~PCI_ROM_ADDRESS_ENABLE); | |
902 | DPRINTK((KERN_DEBUG "STI PCI ROM disabled\n")); | |
903 | } | |
904 | ||
905 | if (sti_init_graph(sti)) | |
906 | goto out_err; | |
907 | ||
908 | sti_inq_conf(sti); | |
909 | sti_dump_globcfg(sti->glob_cfg, sti->sti_mem_request); | |
910 | sti_dump_outptr(sti); | |
911 | ||
912 | printk(KERN_INFO " graphics card name: %s\n", sti->outptr.dev_name ); | |
913 | ||
914 | sti_roms[num_sti_roms] = sti; | |
915 | num_sti_roms++; | |
916 | ||
917 | return sti; | |
918 | ||
919 | out_err: | |
920 | kfree(sti); | |
921 | return NULL; | |
922 | } | |
923 | ||
48a7d5c6 | 924 | static void __devinit sticore_check_for_default_sti(struct sti_struct *sti, char *path) |
1da177e4 LT |
925 | { |
926 | if (strcmp (path, default_sti_path) == 0) | |
927 | default_sti = sti; | |
928 | } | |
929 | ||
930 | /* | |
931 | * on newer systems PDC gives the address of the ROM | |
932 | * in the additional address field addr[1] while on | |
933 | * older Systems the PDC stores it in page0->proc_sti | |
934 | */ | |
48a7d5c6 | 935 | static int __devinit sticore_pa_init(struct parisc_device *dev) |
1da177e4 | 936 | { |
1da177e4 LT |
937 | char pa_path[21]; |
938 | struct sti_struct *sti = NULL; | |
951a0150 MW |
939 | int hpa = dev->hpa.start; |
940 | ||
941 | if (dev->num_addrs && dev->addr[0]) | |
942 | sti = sti_try_rom_generic(dev->addr[0], hpa, NULL); | |
943 | if (!sti) | |
944 | sti = sti_try_rom_generic(hpa, hpa, NULL); | |
945 | if (!sti) | |
946 | sti = sti_try_rom_generic(PAGE0->proc_sti, hpa, NULL); | |
1da177e4 LT |
947 | if (!sti) |
948 | return 1; | |
951a0150 | 949 | |
1da177e4 | 950 | print_pa_hwpath(dev, pa_path); |
951a0150 | 951 | sticore_check_for_default_sti(sti, pa_path); |
1da177e4 LT |
952 | return 0; |
953 | } | |
954 | ||
955 | ||
956 | static int __devinit sticore_pci_init(struct pci_dev *pd, | |
957 | const struct pci_device_id *ent) | |
958 | { | |
959 | #ifdef CONFIG_PCI | |
960 | unsigned long fb_base, rom_base; | |
961 | unsigned int fb_len, rom_len; | |
1a1dba32 | 962 | int err; |
1da177e4 LT |
963 | struct sti_struct *sti; |
964 | ||
1a1dba32 HD |
965 | err = pci_enable_device(pd); |
966 | if (err < 0) { | |
967 | dev_err(&pd->dev, "Cannot enable PCI device\n"); | |
968 | return err; | |
969 | } | |
1da177e4 LT |
970 | |
971 | fb_base = pci_resource_start(pd, 0); | |
972 | fb_len = pci_resource_len(pd, 0); | |
973 | rom_base = pci_resource_start(pd, PCI_ROM_RESOURCE); | |
974 | rom_len = pci_resource_len(pd, PCI_ROM_RESOURCE); | |
975 | if (rom_base) { | |
976 | pci_write_config_dword(pd, PCI_ROM_ADDRESS, rom_base | PCI_ROM_ADDRESS_ENABLE); | |
977 | DPRINTK((KERN_DEBUG "STI PCI ROM enabled at 0x%08lx\n", rom_base)); | |
978 | } | |
979 | ||
980 | printk(KERN_INFO "STI PCI graphic ROM found at %08lx (%u kB), fb at %08lx (%u MB)\n", | |
981 | rom_base, rom_len/1024, fb_base, fb_len/1024/1024); | |
982 | ||
983 | DPRINTK((KERN_DEBUG "Trying PCI STI ROM at %08lx, PCI hpa at %08lx\n", | |
984 | rom_base, fb_base)); | |
985 | ||
986 | sti = sti_try_rom_generic(rom_base, fb_base, pd); | |
987 | if (sti) { | |
988 | char pa_path[30]; | |
989 | print_pci_hwpath(pd, pa_path); | |
990 | sticore_check_for_default_sti(sti, pa_path); | |
991 | } | |
992 | ||
993 | if (!sti) { | |
994 | printk(KERN_WARNING "Unable to handle STI device '%s'\n", | |
995 | pci_name(pd)); | |
996 | return -ENODEV; | |
997 | } | |
998 | #endif /* CONFIG_PCI */ | |
999 | ||
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | ||
1004 | static void __devexit sticore_pci_remove(struct pci_dev *pd) | |
1005 | { | |
1006 | BUG(); | |
1007 | } | |
1008 | ||
1009 | ||
1010 | static struct pci_device_id sti_pci_tbl[] = { | |
1011 | { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_EG) }, | |
1012 | { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX6) }, | |
1013 | { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX4) }, | |
1014 | { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX2) }, | |
1015 | { PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FXE) }, | |
1016 | { 0, } /* terminate list */ | |
1017 | }; | |
1018 | MODULE_DEVICE_TABLE(pci, sti_pci_tbl); | |
1019 | ||
1020 | static struct pci_driver pci_sti_driver = { | |
1021 | .name = "sti", | |
1022 | .id_table = sti_pci_tbl, | |
1023 | .probe = sticore_pci_init, | |
1024 | .remove = sticore_pci_remove, | |
1025 | }; | |
1026 | ||
1027 | static struct parisc_device_id sti_pa_tbl[] = { | |
1028 | { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00077 }, | |
1029 | { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00085 }, | |
1030 | { 0, } | |
1031 | }; | |
1032 | ||
1033 | static struct parisc_driver pa_sti_driver = { | |
1034 | .name = "sti", | |
1035 | .id_table = sti_pa_tbl, | |
1036 | .probe = sticore_pa_init, | |
1037 | }; | |
1038 | ||
1039 | ||
1040 | /* | |
1041 | * sti_init_roms() - detects all STI ROMs and stores them in sti_roms[] | |
1042 | */ | |
1043 | ||
cb6fc18e | 1044 | static int sticore_initialized __read_mostly; |
1da177e4 | 1045 | |
48a7d5c6 | 1046 | static void __devinit sti_init_roms(void) |
1da177e4 LT |
1047 | { |
1048 | if (sticore_initialized) | |
1049 | return; | |
1050 | ||
1051 | sticore_initialized = 1; | |
1052 | ||
1053 | printk(KERN_INFO "STI GSC/PCI core graphics driver " | |
1054 | STI_DRIVERVERSION "\n"); | |
1055 | ||
1056 | /* Register drivers for native & PCI cards */ | |
1057 | register_parisc_driver(&pa_sti_driver); | |
1a1dba32 | 1058 | WARN_ON(pci_register_driver(&pci_sti_driver)); |
1da177e4 LT |
1059 | |
1060 | /* if we didn't find the given default sti, take the first one */ | |
1061 | if (!default_sti) | |
1062 | default_sti = sti_roms[0]; | |
1063 | ||
1064 | } | |
1065 | ||
1066 | /* | |
1067 | * index = 0 gives default sti | |
1068 | * index > 0 gives other stis in detection order | |
1069 | */ | |
1070 | struct sti_struct * sti_get_rom(unsigned int index) | |
1071 | { | |
1072 | if (!sticore_initialized) | |
1073 | sti_init_roms(); | |
1074 | ||
1075 | if (index == 0) | |
1076 | return default_sti; | |
1077 | ||
1078 | if (index > num_sti_roms) | |
1079 | return NULL; | |
1080 | ||
1081 | return sti_roms[index-1]; | |
1082 | } | |
1083 | EXPORT_SYMBOL(sti_get_rom); | |
1084 | ||
1085 | MODULE_AUTHOR("Philipp Rumpf, Helge Deller, Thomas Bogendoerfer"); | |
1086 | MODULE_DESCRIPTION("Core STI driver for HP's NGLE series graphics cards in HP PARISC machines"); | |
1087 | MODULE_LICENSE("GPL v2"); | |
1088 |