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Linux 4.16.11
[linux/fpc-iii.git] / drivers / video / fbdev / stifb.c
blob6ded5c1989985c5889a69383e767d91670799f09
1 /*
2 * linux/drivers/video/stifb.c -
3 * Low level Frame buffer driver for HP workstations with
4 * STI (standard text interface) video firmware.
5 *
6 * Copyright (C) 2001-2006 Helge Deller <deller@gmx.de>
7 * Portions Copyright (C) 2001 Thomas Bogendoerfer <tsbogend@alpha.franken.de>
8 *
9 * Based on:
10 * - linux/drivers/video/artistfb.c -- Artist frame buffer driver
11 * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
12 * - based on skeletonfb, which was
13 * Created 28 Dec 1997 by Geert Uytterhoeven
14 * - HP Xhp cfb-based X11 window driver for XFree86
15 * (c)Copyright 1992 Hewlett-Packard Co.
16 *
17 *
18 * The following graphics display devices (NGLE family) are supported by this driver:
19 *
20 * HPA4070A known as "HCRX", a 1280x1024 color device with 8 planes
21 * HPA4071A known as "HCRX24", a 1280x1024 color device with 24 planes,
22 * optionally available with a hardware accelerator as HPA4071A_Z
23 * HPA1659A known as "CRX", a 1280x1024 color device with 8 planes
24 * HPA1439A known as "CRX24", a 1280x1024 color device with 24 planes,
25 * optionally available with a hardware accelerator.
26 * HPA1924A known as "GRX", a 1280x1024 grayscale device with 8 planes
27 * HPA2269A known as "Dual CRX", a 1280x1024 color device with 8 planes,
28 * implements support for two displays on a single graphics card.
29 * HP710C internal graphics support optionally available on the HP9000s710 SPU,
30 * supports 1280x1024 color displays with 8 planes.
31 * HP710G same as HP710C, 1280x1024 grayscale only
32 * HP710L same as HP710C, 1024x768 color only
33 * HP712 internal graphics support on HP9000s712 SPU, supports 640x480,
34 * 1024x768 or 1280x1024 color displays on 8 planes (Artist)
35 *
36 * This file is subject to the terms and conditions of the GNU General Public
37 * License. See the file COPYING in the main directory of this archive
38 * for more details.
39 */
40
41 /* TODO:
42 * - 1bpp mode is completely untested
43 * - add support for h/w acceleration
44 * - add hardware cursor
45 * - automatically disable double buffering (e.g. on RDI precisionbook laptop)
46 */
47
48
49 /* on supported graphic devices you may:
50 * #define FALLBACK_TO_1BPP to fall back to 1 bpp, or
51 * #undef FALLBACK_TO_1BPP to reject support for unsupported cards */
52 #undef FALLBACK_TO_1BPP
53
54 #undef DEBUG_STIFB_REGS /* debug sti register accesses */
55
56
57 #include <linux/module.h>
58 #include <linux/kernel.h>
59 #include <linux/errno.h>
60 #include <linux/string.h>
61 #include <linux/mm.h>
62 #include <linux/slab.h>
63 #include <linux/delay.h>
64 #include <linux/fb.h>
65 #include <linux/init.h>
66 #include <linux/ioport.h>
67 #include <linux/io.h>
68
69 #include <asm/grfioctl.h> /* for HP-UX compatibility */
70 #include <linux/uaccess.h>
71
72 #include "sticore.h"
73
74 /* REGION_BASE(fb_info, index) returns the virtual address for region <index> */
75 #define REGION_BASE(fb_info, index) \
76 F_EXTEND(fb_info->sti->glob_cfg->region_ptrs[index])
77
78 #define NGLEDEVDEPROM_CRT_REGION 1
79
80 #define NR_PALETTE 256
81
82 typedef struct {
83 __s32 video_config_reg;
84 __s32 misc_video_start;
85 __s32 horiz_timing_fmt;
86 __s32 serr_timing_fmt;
87 __s32 vert_timing_fmt;
88 __s32 horiz_state;
89 __s32 vert_state;
90 __s32 vtg_state_elements;
91 __s32 pipeline_delay;
92 __s32 misc_video_end;
93 } video_setup_t;
94
95 typedef struct {
96 __s16 sizeof_ngle_data;
97 __s16 x_size_visible; /* visible screen dim in pixels */
98 __s16 y_size_visible;
99 __s16 pad2[15];
100 __s16 cursor_pipeline_delay;
101 __s16 video_interleaves;
102 __s32 pad3[11];
103 } ngle_rom_t;
104
105 struct stifb_info {
106 struct fb_info info;
107 unsigned int id;
108 ngle_rom_t ngle_rom;
109 struct sti_struct *sti;
110 int deviceSpecificConfig;
111 u32 pseudo_palette[16];
112 };
113
114 static int __initdata stifb_bpp_pref[MAX_STI_ROMS];
115
116 /* ------------------- chipset specific functions -------------------------- */
117
118 /* offsets to graphic-chip internal registers */
119
120 #define REG_1 0x000118
121 #define REG_2 0x000480
122 #define REG_3 0x0004a0
123 #define REG_4 0x000600
124 #define REG_6 0x000800
125 #define REG_7 0x000804
126 #define REG_8 0x000820
127 #define REG_9 0x000a04
128 #define REG_10 0x018000
129 #define REG_11 0x018004
130 #define REG_12 0x01800c
131 #define REG_13 0x018018
132 #define REG_14 0x01801c
133 #define REG_15 0x200000
134 #define REG_15b0 0x200000
135 #define REG_16b1 0x200005
136 #define REG_16b3 0x200007
137 #define REG_21 0x200218
138 #define REG_22 0x0005a0
139 #define REG_23 0x0005c0
140 #define REG_24 0x000808
141 #define REG_25 0x000b00
142 #define REG_26 0x200118
143 #define REG_27 0x200308
144 #define REG_32 0x21003c
145 #define REG_33 0x210040
146 #define REG_34 0x200008
147 #define REG_35 0x018010
148 #define REG_38 0x210020
149 #define REG_39 0x210120
150 #define REG_40 0x210130
151 #define REG_42 0x210028
152 #define REG_43 0x21002c
153 #define REG_44 0x210030
154 #define REG_45 0x210034
155
156 #define READ_BYTE(fb,reg) gsc_readb((fb)->info.fix.mmio_start + (reg))
157 #define READ_WORD(fb,reg) gsc_readl((fb)->info.fix.mmio_start + (reg))
158
159
160 #ifndef DEBUG_STIFB_REGS
161 # define DEBUG_OFF()
162 # define DEBUG_ON()
163 # define WRITE_BYTE(value,fb,reg) gsc_writeb((value),(fb)->info.fix.mmio_start + (reg))
164 # define WRITE_WORD(value,fb,reg) gsc_writel((value),(fb)->info.fix.mmio_start + (reg))
165 #else
166 static int debug_on = 1;
167 # define DEBUG_OFF() debug_on=0
168 # define DEBUG_ON() debug_on=1
169 # define WRITE_BYTE(value,fb,reg) do { if (debug_on) \
170 printk(KERN_DEBUG "%30s: WRITE_BYTE(0x%06x) = 0x%02x (old=0x%02x)\n", \
171 __func__, reg, value, READ_BYTE(fb,reg)); \
172 gsc_writeb((value),(fb)->info.fix.mmio_start + (reg)); } while (0)
173 # define WRITE_WORD(value,fb,reg) do { if (debug_on) \
174 printk(KERN_DEBUG "%30s: WRITE_WORD(0x%06x) = 0x%08x (old=0x%08x)\n", \
175 __func__, reg, value, READ_WORD(fb,reg)); \
176 gsc_writel((value),(fb)->info.fix.mmio_start + (reg)); } while (0)
177 #endif /* DEBUG_STIFB_REGS */
178
179
180 #define ENABLE 1 /* for enabling/disabling screen */
181 #define DISABLE 0
182
183 #define NGLE_LOCK(fb_info) do { } while (0)
184 #define NGLE_UNLOCK(fb_info) do { } while (0)
185
186 static void
187 SETUP_HW(struct stifb_info *fb)
188 {
189 char stat;
190
191 do {
192 stat = READ_BYTE(fb, REG_15b0);
193 if (!stat)
194 stat = READ_BYTE(fb, REG_15b0);
195 } while (stat);
196 }
197
198
199 static void
200 SETUP_FB(struct stifb_info *fb)
201 {
202 unsigned int reg10_value = 0;
203
204 SETUP_HW(fb);
205 switch (fb->id)
206 {
207 case CRT_ID_VISUALIZE_EG:
208 case S9000_ID_ARTIST:
209 case S9000_ID_A1659A:
210 reg10_value = 0x13601000;
211 break;
212 case S9000_ID_A1439A:
213 if (fb->info.var.bits_per_pixel == 32)
214 reg10_value = 0xBBA0A000;
215 else
216 reg10_value = 0x13601000;
217 break;
218 case S9000_ID_HCRX:
219 if (fb->info.var.bits_per_pixel == 32)
220 reg10_value = 0xBBA0A000;
221 else
222 reg10_value = 0x13602000;
223 break;
224 case S9000_ID_TIMBER:
225 case CRX24_OVERLAY_PLANES:
226 reg10_value = 0x13602000;
227 break;
228 }
229 if (reg10_value)
230 WRITE_WORD(reg10_value, fb, REG_10);
231 WRITE_WORD(0x83000300, fb, REG_14);
232 SETUP_HW(fb);
233 WRITE_BYTE(1, fb, REG_16b1);
234 }
235
236 static void
237 START_IMAGE_COLORMAP_ACCESS(struct stifb_info *fb)
238 {
239 SETUP_HW(fb);
240 WRITE_WORD(0xBBE0F000, fb, REG_10);
241 WRITE_WORD(0x03000300, fb, REG_14);
242 WRITE_WORD(~0, fb, REG_13);
243 }
244
245 static void
246 WRITE_IMAGE_COLOR(struct stifb_info *fb, int index, int color)
247 {
248 SETUP_HW(fb);
249 WRITE_WORD(((0x100+index)<<2), fb, REG_3);
250 WRITE_WORD(color, fb, REG_4);
251 }
252
253 static void
254 FINISH_IMAGE_COLORMAP_ACCESS(struct stifb_info *fb)
255 {
256 WRITE_WORD(0x400, fb, REG_2);
257 if (fb->info.var.bits_per_pixel == 32) {
258 WRITE_WORD(0x83000100, fb, REG_1);
259 } else {
260 if (fb->id == S9000_ID_ARTIST || fb->id == CRT_ID_VISUALIZE_EG)
261 WRITE_WORD(0x80000100, fb, REG_26);
262 else
263 WRITE_WORD(0x80000100, fb, REG_1);
264 }
265 SETUP_FB(fb);
266 }
267
268 static void
269 SETUP_RAMDAC(struct stifb_info *fb)
270 {
271 SETUP_HW(fb);
272 WRITE_WORD(0x04000000, fb, 0x1020);
273 WRITE_WORD(0xff000000, fb, 0x1028);
274 }
275
276 static void
277 CRX24_SETUP_RAMDAC(struct stifb_info *fb)
278 {
279 SETUP_HW(fb);
280 WRITE_WORD(0x04000000, fb, 0x1000);
281 WRITE_WORD(0x02000000, fb, 0x1004);
282 WRITE_WORD(0xff000000, fb, 0x1008);
283 WRITE_WORD(0x05000000, fb, 0x1000);
284 WRITE_WORD(0x02000000, fb, 0x1004);
285 WRITE_WORD(0x03000000, fb, 0x1008);
286 }
287
288 #if 0
289 static void
290 HCRX_SETUP_RAMDAC(struct stifb_info *fb)
291 {
292 WRITE_WORD(0xffffffff, fb, REG_32);
293 }
294 #endif
295
296 static void
297 CRX24_SET_OVLY_MASK(struct stifb_info *fb)
298 {
299 SETUP_HW(fb);
300 WRITE_WORD(0x13a02000, fb, REG_11);
301 WRITE_WORD(0x03000300, fb, REG_14);
302 WRITE_WORD(0x000017f0, fb, REG_3);
303 WRITE_WORD(0xffffffff, fb, REG_13);
304 WRITE_WORD(0xffffffff, fb, REG_22);
305 WRITE_WORD(0x00000000, fb, REG_23);
306 }
307
308 static void
309 ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
310 {
311 unsigned int value = enable ? 0x43000000 : 0x03000000;
312 SETUP_HW(fb);
313 WRITE_WORD(0x06000000, fb, 0x1030);
314 WRITE_WORD(value, fb, 0x1038);
315 }
316
317 static void
318 CRX24_ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
319 {
320 unsigned int value = enable ? 0x10000000 : 0x30000000;
321 SETUP_HW(fb);
322 WRITE_WORD(0x01000000, fb, 0x1000);
323 WRITE_WORD(0x02000000, fb, 0x1004);
324 WRITE_WORD(value, fb, 0x1008);
325 }
326
327 static void
328 ARTIST_ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
329 {
330 u32 DregsMiscVideo = REG_21;
331 u32 DregsMiscCtl = REG_27;
332
333 SETUP_HW(fb);
334 if (enable) {
335 WRITE_WORD(READ_WORD(fb, DregsMiscVideo) | 0x0A000000, fb, DregsMiscVideo);
336 WRITE_WORD(READ_WORD(fb, DregsMiscCtl) | 0x00800000, fb, DregsMiscCtl);
337 } else {
338 WRITE_WORD(READ_WORD(fb, DregsMiscVideo) & ~0x0A000000, fb, DregsMiscVideo);
339 WRITE_WORD(READ_WORD(fb, DregsMiscCtl) & ~0x00800000, fb, DregsMiscCtl);
340 }
341 }
342
343 #define GET_ROMTABLE_INDEX(fb) \
344 (READ_BYTE(fb, REG_16b3) - 1)
345
346 #define HYPER_CONFIG_PLANES_24 0x00000100
347
348 #define IS_24_DEVICE(fb) \
349 (fb->deviceSpecificConfig & HYPER_CONFIG_PLANES_24)
350
351 #define IS_888_DEVICE(fb) \
352 (!(IS_24_DEVICE(fb)))
353
354 #define GET_FIFO_SLOTS(fb, cnt, numslots) \
355 { while (cnt < numslots) \
356 cnt = READ_WORD(fb, REG_34); \
357 cnt -= numslots; \
358 }
359
360 #define IndexedDcd 0 /* Pixel data is indexed (pseudo) color */
361 #define Otc04 2 /* Pixels in each longword transfer (4) */
362 #define Otc32 5 /* Pixels in each longword transfer (32) */
363 #define Ots08 3 /* Each pixel is size (8)d transfer (1) */
364 #define OtsIndirect 6 /* Each bit goes through FG/BG color(8) */
365 #define AddrLong 5 /* FB address is Long aligned (pixel) */
366 #define BINovly 0x2 /* 8 bit overlay */
367 #define BINapp0I 0x0 /* Application Buffer 0, Indexed */
368 #define BINapp1I 0x1 /* Application Buffer 1, Indexed */
369 #define BINapp0F8 0xa /* Application Buffer 0, Fractional 8-8-8 */
370 #define BINattr 0xd /* Attribute Bitmap */
371 #define RopSrc 0x3
372 #define BitmapExtent08 3 /* Each write hits ( 8) bits in depth */
373 #define BitmapExtent32 5 /* Each write hits (32) bits in depth */
374 #define DataDynamic 0 /* Data register reloaded by direct access */
375 #define MaskDynamic 1 /* Mask register reloaded by direct access */
376 #define MaskOtc 0 /* Mask contains Object Count valid bits */
377
378 #define MaskAddrOffset(offset) (offset)
379 #define StaticReg(en) (en)
380 #define BGx(en) (en)
381 #define FGx(en) (en)
382
383 #define BAJustPoint(offset) (offset)
384 #define BAIndexBase(base) (base)
385 #define BA(F,C,S,A,J,B,I) \
386 (((F)<<31)|((C)<<27)|((S)<<24)|((A)<<21)|((J)<<16)|((B)<<12)|(I))
387
388 #define IBOvals(R,M,X,S,D,L,B,F) \
389 (((R)<<8)|((M)<<16)|((X)<<24)|((S)<<29)|((D)<<28)|((L)<<31)|((B)<<1)|(F))
390
391 #define NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb, val) \
392 WRITE_WORD(val, fb, REG_14)
393
394 #define NGLE_QUICK_SET_DST_BM_ACCESS(fb, val) \
395 WRITE_WORD(val, fb, REG_11)
396
397 #define NGLE_QUICK_SET_CTL_PLN_REG(fb, val) \
398 WRITE_WORD(val, fb, REG_12)
399
400 #define NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, plnmsk32) \
401 WRITE_WORD(plnmsk32, fb, REG_13)
402
403 #define NGLE_REALLY_SET_IMAGE_FG_COLOR(fb, fg32) \
404 WRITE_WORD(fg32, fb, REG_35)
405
406 #define NGLE_SET_TRANSFERDATA(fb, val) \
407 WRITE_WORD(val, fb, REG_8)
408
409 #define NGLE_SET_DSTXY(fb, val) \
410 WRITE_WORD(val, fb, REG_6)
411
412 #define NGLE_LONG_FB_ADDRESS(fbaddrbase, x, y) ( \
413 (u32) (fbaddrbase) + \
414 ( (unsigned int) ( (y) << 13 ) | \
415 (unsigned int) ( (x) << 2 ) ) \
416 )
417
418 #define NGLE_BINC_SET_DSTADDR(fb, addr) \
419 WRITE_WORD(addr, fb, REG_3)
420
421 #define NGLE_BINC_SET_SRCADDR(fb, addr) \
422 WRITE_WORD(addr, fb, REG_2)
423
424 #define NGLE_BINC_SET_DSTMASK(fb, mask) \
425 WRITE_WORD(mask, fb, REG_22)
426
427 #define NGLE_BINC_WRITE32(fb, data32) \
428 WRITE_WORD(data32, fb, REG_23)
429
430 #define START_COLORMAPLOAD(fb, cmapBltCtlData32) \
431 WRITE_WORD((cmapBltCtlData32), fb, REG_38)
432
433 #define SET_LENXY_START_RECFILL(fb, lenxy) \
434 WRITE_WORD(lenxy, fb, REG_9)
435
436 #define SETUP_COPYAREA(fb) \
437 WRITE_BYTE(0, fb, REG_16b1)
438
439 static void
440 HYPER_ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
441 {
442 u32 DregsHypMiscVideo = REG_33;
443 unsigned int value;
444 SETUP_HW(fb);
445 value = READ_WORD(fb, DregsHypMiscVideo);
446 if (enable)
447 value |= 0x0A000000;
448 else
449 value &= ~0x0A000000;
450 WRITE_WORD(value, fb, DregsHypMiscVideo);
451 }
452
453
454 /* BufferNumbers used by SETUP_ATTR_ACCESS() */
455 #define BUFF0_CMAP0 0x00001e02
456 #define BUFF1_CMAP0 0x02001e02
457 #define BUFF1_CMAP3 0x0c001e02
458 #define ARTIST_CMAP0 0x00000102
459 #define HYPER_CMAP8 0x00000100
460 #define HYPER_CMAP24 0x00000800
461
462 static void
463 SETUP_ATTR_ACCESS(struct stifb_info *fb, unsigned BufferNumber)
464 {
465 SETUP_HW(fb);
466 WRITE_WORD(0x2EA0D000, fb, REG_11);
467 WRITE_WORD(0x23000302, fb, REG_14);
468 WRITE_WORD(BufferNumber, fb, REG_12);
469 WRITE_WORD(0xffffffff, fb, REG_8);
470 }
471
472 static void
473 SET_ATTR_SIZE(struct stifb_info *fb, int width, int height)
474 {
475 /* REG_6 seems to have special values when run on a
476 RDI precisionbook parisc laptop (INTERNAL_EG_DX1024 or
477 INTERNAL_EG_X1024). The values are:
478 0x2f0: internal (LCD) & external display enabled
479 0x2a0: external display only
480 0x000: zero on standard artist graphic cards
481 */
482 WRITE_WORD(0x00000000, fb, REG_6);
483 WRITE_WORD((width<<16) | height, fb, REG_9);
484 WRITE_WORD(0x05000000, fb, REG_6);
485 WRITE_WORD(0x00040001, fb, REG_9);
486 }
487
488 static void
489 FINISH_ATTR_ACCESS(struct stifb_info *fb)
490 {
491 SETUP_HW(fb);
492 WRITE_WORD(0x00000000, fb, REG_12);
493 }
494
495 static void
496 elkSetupPlanes(struct stifb_info *fb)
497 {
498 SETUP_RAMDAC(fb);
499 SETUP_FB(fb);
500 }
501
502 static void
503 ngleSetupAttrPlanes(struct stifb_info *fb, int BufferNumber)
504 {
505 SETUP_ATTR_ACCESS(fb, BufferNumber);
506 SET_ATTR_SIZE(fb, fb->info.var.xres, fb->info.var.yres);
507 FINISH_ATTR_ACCESS(fb);
508 SETUP_FB(fb);
509 }
510
511
512 static void
513 rattlerSetupPlanes(struct stifb_info *fb)
514 {
515 int saved_id, y;
516
517 /* Write RAMDAC pixel read mask register so all overlay
518 * planes are display-enabled. (CRX24 uses Bt462 pixel
519 * read mask register for overlay planes, not image planes).
520 */
521 CRX24_SETUP_RAMDAC(fb);
522
523 /* change fb->id temporarily to fool SETUP_FB() */
524 saved_id = fb->id;
525 fb->id = CRX24_OVERLAY_PLANES;
526 SETUP_FB(fb);
527 fb->id = saved_id;
528
529 for (y = 0; y < fb->info.var.yres; ++y)
530 memset(fb->info.screen_base + y * fb->info.fix.line_length,
531 0xff, fb->info.var.xres * fb->info.var.bits_per_pixel/8);
532
533 CRX24_SET_OVLY_MASK(fb);
534 SETUP_FB(fb);
535 }
536
537
538 #define HYPER_CMAP_TYPE 0
539 #define NGLE_CMAP_INDEXED0_TYPE 0
540 #define NGLE_CMAP_OVERLAY_TYPE 3
541
542 /* typedef of LUT (Colormap) BLT Control Register */
543 typedef union /* Note assumption that fields are packed left-to-right */
544 { u32 all;
545 struct
546 {
547 unsigned enable : 1;
548 unsigned waitBlank : 1;
549 unsigned reserved1 : 4;
550 unsigned lutOffset : 10; /* Within destination LUT */
551 unsigned lutType : 2; /* Cursor, image, overlay */
552 unsigned reserved2 : 4;
553 unsigned length : 10;
554 } fields;
555 } NgleLutBltCtl;
556
557
558 #if 0
559 static NgleLutBltCtl
560 setNgleLutBltCtl(struct stifb_info *fb, int offsetWithinLut, int length)
561 {
562 NgleLutBltCtl lutBltCtl;
563
564 /* set enable, zero reserved fields */
565 lutBltCtl.all = 0x80000000;
566 lutBltCtl.fields.length = length;
567
568 switch (fb->id)
569 {
570 case S9000_ID_A1439A: /* CRX24 */
571 if (fb->var.bits_per_pixel == 8) {
572 lutBltCtl.fields.lutType = NGLE_CMAP_OVERLAY_TYPE;
573 lutBltCtl.fields.lutOffset = 0;
574 } else {
575 lutBltCtl.fields.lutType = NGLE_CMAP_INDEXED0_TYPE;
576 lutBltCtl.fields.lutOffset = 0 * 256;
577 }
578 break;
579
580 case S9000_ID_ARTIST:
581 lutBltCtl.fields.lutType = NGLE_CMAP_INDEXED0_TYPE;
582 lutBltCtl.fields.lutOffset = 0 * 256;
583 break;
584
585 default:
586 lutBltCtl.fields.lutType = NGLE_CMAP_INDEXED0_TYPE;
587 lutBltCtl.fields.lutOffset = 0;
588 break;
589 }
590
591 /* Offset points to start of LUT. Adjust for within LUT */
592 lutBltCtl.fields.lutOffset += offsetWithinLut;
593
594 return lutBltCtl;
595 }
596 #endif
597
598 static NgleLutBltCtl
599 setHyperLutBltCtl(struct stifb_info *fb, int offsetWithinLut, int length)
600 {
601 NgleLutBltCtl lutBltCtl;
602
603 /* set enable, zero reserved fields */
604 lutBltCtl.all = 0x80000000;
605
606 lutBltCtl.fields.length = length;
607 lutBltCtl.fields.lutType = HYPER_CMAP_TYPE;
608
609 /* Expect lutIndex to be 0 or 1 for image cmaps, 2 or 3 for overlay cmaps */
610 if (fb->info.var.bits_per_pixel == 8)
611 lutBltCtl.fields.lutOffset = 2 * 256;
612 else
613 lutBltCtl.fields.lutOffset = 0 * 256;
614
615 /* Offset points to start of LUT. Adjust for within LUT */
616 lutBltCtl.fields.lutOffset += offsetWithinLut;
617
618 return lutBltCtl;
619 }
620
621
622 static void hyperUndoITE(struct stifb_info *fb)
623 {
624 int nFreeFifoSlots = 0;
625 u32 fbAddr;
626
627 NGLE_LOCK(fb);
628
629 GET_FIFO_SLOTS(fb, nFreeFifoSlots, 1);
630 WRITE_WORD(0xffffffff, fb, REG_32);
631
632 /* Write overlay transparency mask so only entry 255 is transparent */
633
634 /* Hardware setup for full-depth write to "magic" location */
635 GET_FIFO_SLOTS(fb, nFreeFifoSlots, 7);
636 NGLE_QUICK_SET_DST_BM_ACCESS(fb,
637 BA(IndexedDcd, Otc04, Ots08, AddrLong,
638 BAJustPoint(0), BINovly, BAIndexBase(0)));
639 NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb,
640 IBOvals(RopSrc, MaskAddrOffset(0),
641 BitmapExtent08, StaticReg(0),
642 DataDynamic, MaskOtc, BGx(0), FGx(0)));
643
644 /* Now prepare to write to the "magic" location */
645 fbAddr = NGLE_LONG_FB_ADDRESS(0, 1532, 0);
646 NGLE_BINC_SET_DSTADDR(fb, fbAddr);
647 NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xffffff);
648 NGLE_BINC_SET_DSTMASK(fb, 0xffffffff);
649
650 /* Finally, write a zero to clear the mask */
651 NGLE_BINC_WRITE32(fb, 0);
652
653 NGLE_UNLOCK(fb);
654 }
655
656 static void
657 ngleDepth8_ClearImagePlanes(struct stifb_info *fb)
658 {
659 /* FIXME! */
660 }
661
662 static void
663 ngleDepth24_ClearImagePlanes(struct stifb_info *fb)
664 {
665 /* FIXME! */
666 }
667
668 static void
669 ngleResetAttrPlanes(struct stifb_info *fb, unsigned int ctlPlaneReg)
670 {
671 int nFreeFifoSlots = 0;
672 u32 packed_dst;
673 u32 packed_len;
674
675 NGLE_LOCK(fb);
676
677 GET_FIFO_SLOTS(fb, nFreeFifoSlots, 4);
678 NGLE_QUICK_SET_DST_BM_ACCESS(fb,
679 BA(IndexedDcd, Otc32, OtsIndirect,
680 AddrLong, BAJustPoint(0),
681 BINattr, BAIndexBase(0)));
682 NGLE_QUICK_SET_CTL_PLN_REG(fb, ctlPlaneReg);
683 NGLE_SET_TRANSFERDATA(fb, 0xffffffff);
684
685 NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb,
686 IBOvals(RopSrc, MaskAddrOffset(0),
687 BitmapExtent08, StaticReg(1),
688 DataDynamic, MaskOtc,
689 BGx(0), FGx(0)));
690 packed_dst = 0;
691 packed_len = (fb->info.var.xres << 16) | fb->info.var.yres;
692 GET_FIFO_SLOTS(fb, nFreeFifoSlots, 2);
693 NGLE_SET_DSTXY(fb, packed_dst);
694 SET_LENXY_START_RECFILL(fb, packed_len);
695
696 /*
697 * In order to work around an ELK hardware problem (Buffy doesn't
698 * always flush it's buffers when writing to the attribute
699 * planes), at least 4 pixels must be written to the attribute
700 * planes starting at (X == 1280) and (Y != to the last Y written
701 * by BIF):
702 */
703
704 if (fb->id == S9000_ID_A1659A) { /* ELK_DEVICE_ID */
705 /* It's safe to use scanline zero: */
706 packed_dst = (1280 << 16);
707 GET_FIFO_SLOTS(fb, nFreeFifoSlots, 2);
708 NGLE_SET_DSTXY(fb, packed_dst);
709 packed_len = (4 << 16) | 1;
710 SET_LENXY_START_RECFILL(fb, packed_len);
711 } /* ELK Hardware Kludge */
712
713 /**** Finally, set the Control Plane Register back to zero: ****/
714 GET_FIFO_SLOTS(fb, nFreeFifoSlots, 1);
715 NGLE_QUICK_SET_CTL_PLN_REG(fb, 0);
716
717 NGLE_UNLOCK(fb);
718 }
719
720 static void
721 ngleClearOverlayPlanes(struct stifb_info *fb, int mask, int data)
722 {
723 int nFreeFifoSlots = 0;
724 u32 packed_dst;
725 u32 packed_len;
726
727 NGLE_LOCK(fb);
728
729 /* Hardware setup */
730 GET_FIFO_SLOTS(fb, nFreeFifoSlots, 8);
731 NGLE_QUICK_SET_DST_BM_ACCESS(fb,
732 BA(IndexedDcd, Otc04, Ots08, AddrLong,
733 BAJustPoint(0), BINovly, BAIndexBase(0)));
734
735 NGLE_SET_TRANSFERDATA(fb, 0xffffffff); /* Write foreground color */
736
737 NGLE_REALLY_SET_IMAGE_FG_COLOR(fb, data);
738 NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, mask);
739
740 packed_dst = 0;
741 packed_len = (fb->info.var.xres << 16) | fb->info.var.yres;
742 NGLE_SET_DSTXY(fb, packed_dst);
743
744 /* Write zeroes to overlay planes */
745 NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb,
746 IBOvals(RopSrc, MaskAddrOffset(0),
747 BitmapExtent08, StaticReg(0),
748 DataDynamic, MaskOtc, BGx(0), FGx(0)));
749
750 SET_LENXY_START_RECFILL(fb, packed_len);
751
752 NGLE_UNLOCK(fb);
753 }
754
755 static void
756 hyperResetPlanes(struct stifb_info *fb, int enable)
757 {
758 unsigned int controlPlaneReg;
759
760 NGLE_LOCK(fb);
761
762 if (IS_24_DEVICE(fb))
763 if (fb->info.var.bits_per_pixel == 32)
764 controlPlaneReg = 0x04000F00;
765 else
766 controlPlaneReg = 0x00000F00; /* 0x00000800 should be enough, but lets clear all 4 bits */
767 else
768 controlPlaneReg = 0x00000F00; /* 0x00000100 should be enough, but lets clear all 4 bits */
769
770 switch (enable) {
771 case ENABLE:
772 /* clear screen */
773 if (IS_24_DEVICE(fb))
774 ngleDepth24_ClearImagePlanes(fb);
775 else
776 ngleDepth8_ClearImagePlanes(fb);
777
778 /* Paint attribute planes for default case.
779 * On Hyperdrive, this means all windows using overlay cmap 0. */
780 ngleResetAttrPlanes(fb, controlPlaneReg);
781
782 /* clear overlay planes */
783 ngleClearOverlayPlanes(fb, 0xff, 255);
784
785 /**************************************************
786 ** Also need to counteract ITE settings
787 **************************************************/
788 hyperUndoITE(fb);
789 break;
790
791 case DISABLE:
792 /* clear screen */
793 if (IS_24_DEVICE(fb))
794 ngleDepth24_ClearImagePlanes(fb);
795 else
796 ngleDepth8_ClearImagePlanes(fb);
797 ngleResetAttrPlanes(fb, controlPlaneReg);
798 ngleClearOverlayPlanes(fb, 0xff, 0);
799 break;
800
801 case -1: /* RESET */
802 hyperUndoITE(fb);
803 ngleResetAttrPlanes(fb, controlPlaneReg);
804 break;
805 }
806
807 NGLE_UNLOCK(fb);
808 }
809
810 /* Return pointer to in-memory structure holding ELK device-dependent ROM values. */
811
812 static void
813 ngleGetDeviceRomData(struct stifb_info *fb)
814 {
815 #if 0
816 XXX: FIXME: !!!
817 int *pBytePerLongDevDepData;/* data byte == LSB */
818 int *pRomTable;
819 NgleDevRomData *pPackedDevRomData;
820 int sizePackedDevRomData = sizeof(*pPackedDevRomData);
821 char *pCard8;
822 int i;
823 char *mapOrigin = NULL;
824
825 int romTableIdx;
826
827 pPackedDevRomData = fb->ngle_rom;
828
829 SETUP_HW(fb);
830 if (fb->id == S9000_ID_ARTIST) {
831 pPackedDevRomData->cursor_pipeline_delay = 4;
832 pPackedDevRomData->video_interleaves = 4;
833 } else {
834 /* Get pointer to unpacked byte/long data in ROM */
835 pBytePerLongDevDepData = fb->sti->regions[NGLEDEVDEPROM_CRT_REGION];
836
837 /* Tomcat supports several resolutions: 1280x1024, 1024x768, 640x480 */
838 if (fb->id == S9000_ID_TOMCAT)
839 {
840 /* jump to the correct ROM table */
841 GET_ROMTABLE_INDEX(romTableIdx);
842 while (romTableIdx > 0)
843 {
844 pCard8 = (Card8 *) pPackedDevRomData;
845 pRomTable = pBytePerLongDevDepData;
846 /* Pack every fourth byte from ROM into structure */
847 for (i = 0; i < sizePackedDevRomData; i++)
848 {
849 *pCard8++ = (Card8) (*pRomTable++);
850 }
851
852 pBytePerLongDevDepData = (Card32 *)
853 ((Card8 *) pBytePerLongDevDepData +
854 pPackedDevRomData->sizeof_ngle_data);
855
856 romTableIdx--;
857 }
858 }
859
860 pCard8 = (Card8 *) pPackedDevRomData;
861
862 /* Pack every fourth byte from ROM into structure */
863 for (i = 0; i < sizePackedDevRomData; i++)
864 {
865 *pCard8++ = (Card8) (*pBytePerLongDevDepData++);
866 }
867 }
868
869 SETUP_FB(fb);
870 #endif
871 }
872
873
874 #define HYPERBOWL_MODE_FOR_8_OVER_88_LUT0_NO_TRANSPARENCIES 4
875 #define HYPERBOWL_MODE01_8_24_LUT0_TRANSPARENT_LUT1_OPAQUE 8
876 #define HYPERBOWL_MODE01_8_24_LUT0_OPAQUE_LUT1_OPAQUE 10
877 #define HYPERBOWL_MODE2_8_24 15
878
879 /* HCRX specific boot-time initialization */
880 static void __init
881 SETUP_HCRX(struct stifb_info *fb)
882 {
883 int hyperbowl;
884 int nFreeFifoSlots = 0;
885
886 if (fb->id != S9000_ID_HCRX)
887 return;
888
889 /* Initialize Hyperbowl registers */
890 GET_FIFO_SLOTS(fb, nFreeFifoSlots, 7);
891
892 if (IS_24_DEVICE(fb)) {
893 hyperbowl = (fb->info.var.bits_per_pixel == 32) ?
894 HYPERBOWL_MODE01_8_24_LUT0_TRANSPARENT_LUT1_OPAQUE :
895 HYPERBOWL_MODE01_8_24_LUT0_OPAQUE_LUT1_OPAQUE;
896
897 /* First write to Hyperbowl must happen twice (bug) */
898 WRITE_WORD(hyperbowl, fb, REG_40);
899 WRITE_WORD(hyperbowl, fb, REG_40);
900
901 WRITE_WORD(HYPERBOWL_MODE2_8_24, fb, REG_39);
902
903 WRITE_WORD(0x014c0148, fb, REG_42); /* Set lut 0 to be the direct color */
904 WRITE_WORD(0x404c4048, fb, REG_43);
905 WRITE_WORD(0x034c0348, fb, REG_44);
906 WRITE_WORD(0x444c4448, fb, REG_45);
907 } else {
908 hyperbowl = HYPERBOWL_MODE_FOR_8_OVER_88_LUT0_NO_TRANSPARENCIES;
909
910 /* First write to Hyperbowl must happen twice (bug) */
911 WRITE_WORD(hyperbowl, fb, REG_40);
912 WRITE_WORD(hyperbowl, fb, REG_40);
913
914 WRITE_WORD(0x00000000, fb, REG_42);
915 WRITE_WORD(0x00000000, fb, REG_43);
916 WRITE_WORD(0x00000000, fb, REG_44);
917 WRITE_WORD(0x444c4048, fb, REG_45);
918 }
919 }
920
921
922 /* ------------------- driver specific functions --------------------------- */
923
924 static int
925 stifb_setcolreg(u_int regno, u_int red, u_int green,
926 u_int blue, u_int transp, struct fb_info *info)
927 {
928 struct stifb_info *fb = container_of(info, struct stifb_info, info);
929 u32 color;
930
931 if (regno >= NR_PALETTE)
932 return 1;
933
934 red >>= 8;
935 green >>= 8;
936 blue >>= 8;
937
938 DEBUG_OFF();
939
940 START_IMAGE_COLORMAP_ACCESS(fb);
941
942 if (unlikely(fb->info.var.grayscale)) {
943 /* gray = 0.30*R + 0.59*G + 0.11*B */
944 color = ((red * 77) +
945 (green * 151) +
946 (blue * 28)) >> 8;
947 } else {
948 color = ((red << 16) |
949 (green << 8) |
950 (blue));
951 }
952
953 if (fb->info.fix.visual == FB_VISUAL_DIRECTCOLOR) {
954 struct fb_var_screeninfo *var = &fb->info.var;
955 if (regno < 16)
956 ((u32 *)fb->info.pseudo_palette)[regno] =
957 regno << var->red.offset |
958 regno << var->green.offset |
959 regno << var->blue.offset;
960 }
961
962 WRITE_IMAGE_COLOR(fb, regno, color);
963
964 if (fb->id == S9000_ID_HCRX) {
965 NgleLutBltCtl lutBltCtl;
966
967 lutBltCtl = setHyperLutBltCtl(fb,
968 0, /* Offset w/i LUT */
969 256); /* Load entire LUT */
970 NGLE_BINC_SET_SRCADDR(fb,
971 NGLE_LONG_FB_ADDRESS(0, 0x100, 0));
972 /* 0x100 is same as used in WRITE_IMAGE_COLOR() */
973 START_COLORMAPLOAD(fb, lutBltCtl.all);
974 SETUP_FB(fb);
975 } else {
976 /* cleanup colormap hardware */
977 FINISH_IMAGE_COLORMAP_ACCESS(fb);
978 }
979
980 DEBUG_ON();
981
982 return 0;
983 }
984
985 static int
986 stifb_blank(int blank_mode, struct fb_info *info)
987 {
988 struct stifb_info *fb = container_of(info, struct stifb_info, info);
989 int enable = (blank_mode == 0) ? ENABLE : DISABLE;
990
991 switch (fb->id) {
992 case S9000_ID_A1439A:
993 CRX24_ENABLE_DISABLE_DISPLAY(fb, enable);
994 break;
995 case CRT_ID_VISUALIZE_EG:
996 case S9000_ID_ARTIST:
997 ARTIST_ENABLE_DISABLE_DISPLAY(fb, enable);
998 break;
999 case S9000_ID_HCRX:
1000 HYPER_ENABLE_DISABLE_DISPLAY(fb, enable);
1001 break;
1002 case S9000_ID_A1659A: /* fall through */
1003 case S9000_ID_TIMBER:
1004 case CRX24_OVERLAY_PLANES:
1005 default:
1006 ENABLE_DISABLE_DISPLAY(fb, enable);
1007 break;
1008 }
1009
1010 SETUP_FB(fb);
1011 return 0;
1012 }
1013
1014 static void
1015 stifb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1016 {
1017 struct stifb_info *fb = container_of(info, struct stifb_info, info);
1018
1019 SETUP_COPYAREA(fb);
1020
1021 SETUP_HW(fb);
1022 if (fb->info.var.bits_per_pixel == 32) {
1023 WRITE_WORD(0xBBA0A000, fb, REG_10);
1024
1025 NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xffffffff);
1026 } else {
1027 WRITE_WORD(fb->id == S9000_ID_HCRX ? 0x13a02000 : 0x13a01000, fb, REG_10);
1028
1029 NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xff);
1030 }
1031
1032 NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb,
1033 IBOvals(RopSrc, MaskAddrOffset(0),
1034 BitmapExtent08, StaticReg(1),
1035 DataDynamic, MaskOtc, BGx(0), FGx(0)));
1036
1037 WRITE_WORD(((area->sx << 16) | area->sy), fb, REG_24);
1038 WRITE_WORD(((area->width << 16) | area->height), fb, REG_7);
1039 WRITE_WORD(((area->dx << 16) | area->dy), fb, REG_25);
1040
1041 SETUP_FB(fb);
1042 }
1043
1044 static void __init
1045 stifb_init_display(struct stifb_info *fb)
1046 {
1047 int id = fb->id;
1048
1049 SETUP_FB(fb);
1050
1051 /* HCRX specific initialization */
1052 SETUP_HCRX(fb);
1053
1054 /*
1055 if (id == S9000_ID_HCRX)
1056 hyperInitSprite(fb);
1057 else
1058 ngleInitSprite(fb);
1059 */
1060
1061 /* Initialize the image planes. */
1062 switch (id) {
1063 case S9000_ID_HCRX:
1064 hyperResetPlanes(fb, ENABLE);
1065 break;
1066 case S9000_ID_A1439A:
1067 rattlerSetupPlanes(fb);
1068 break;
1069 case S9000_ID_A1659A:
1070 case S9000_ID_ARTIST:
1071 case CRT_ID_VISUALIZE_EG:
1072 elkSetupPlanes(fb);
1073 break;
1074 }
1075
1076 /* Clear attribute planes on non HCRX devices. */
1077 switch (id) {
1078 case S9000_ID_A1659A:
1079 case S9000_ID_A1439A:
1080 if (fb->info.var.bits_per_pixel == 32)
1081 ngleSetupAttrPlanes(fb, BUFF1_CMAP3);
1082 else {
1083 ngleSetupAttrPlanes(fb, BUFF1_CMAP0);
1084 }
1085 if (id == S9000_ID_A1439A)
1086 ngleClearOverlayPlanes(fb, 0xff, 0);
1087 break;
1088 case S9000_ID_ARTIST:
1089 case CRT_ID_VISUALIZE_EG:
1090 if (fb->info.var.bits_per_pixel == 32)
1091 ngleSetupAttrPlanes(fb, BUFF1_CMAP3);
1092 else {
1093 ngleSetupAttrPlanes(fb, ARTIST_CMAP0);
1094 }
1095 break;
1096 }
1097 stifb_blank(0, (struct fb_info *)fb); /* 0=enable screen */
1098
1099 SETUP_FB(fb);
1100 }
1101
1102 /* ------------ Interfaces to hardware functions ------------ */
1103
1104 static struct fb_ops stifb_ops = {
1105 .owner = THIS_MODULE,
1106 .fb_setcolreg = stifb_setcolreg,
1107 .fb_blank = stifb_blank,
1108 .fb_fillrect = cfb_fillrect,
1109 .fb_copyarea = stifb_copyarea,
1110 .fb_imageblit = cfb_imageblit,
1111 };
1112
1113
1114 /*
1115 * Initialization
1116 */
1117
1118 static int __init stifb_init_fb(struct sti_struct *sti, int bpp_pref)
1119 {
1120 struct fb_fix_screeninfo *fix;
1121 struct fb_var_screeninfo *var;
1122 struct stifb_info *fb;
1123 struct fb_info *info;
1124 unsigned long sti_rom_address;
1125 char *dev_name;
1126 int bpp, xres, yres;
1127
1128 fb = kzalloc(sizeof(*fb), GFP_ATOMIC);
1129 if (!fb) {
1130 printk(KERN_ERR "stifb: Could not allocate stifb structure\n");
1131 return -ENODEV;
1132 }
1133
1134 info = &fb->info;
1135
1136 /* set struct to a known state */
1137 fix = &info->fix;
1138 var = &info->var;
1139
1140 fb->sti = sti;
1141 dev_name = sti->sti_data->inq_outptr.dev_name;
1142 /* store upper 32bits of the graphics id */
1143 fb->id = fb->sti->graphics_id[0];
1144
1145 /* only supported cards are allowed */
1146 switch (fb->id) {
1147 case CRT_ID_VISUALIZE_EG:
1148 /* Visualize cards can run either in "double buffer" or
1149 "standard" mode. Depending on the mode, the card reports
1150 a different device name, e.g. "INTERNAL_EG_DX1024" in double
1151 buffer mode and "INTERNAL_EG_X1024" in standard mode.
1152 Since this driver only supports standard mode, we check
1153 if the device name contains the string "DX" and tell the
1154 user how to reconfigure the card. */
1155 if (strstr(dev_name, "DX")) {
1156 printk(KERN_WARNING
1157 "WARNING: stifb framebuffer driver does not support '%s' in double-buffer mode.\n"
1158 "WARNING: Please disable the double-buffer mode in IPL menu (the PARISC-BIOS).\n",
1159 dev_name);
1160 goto out_err0;
1161 }
1162 /* fall though */
1163 case S9000_ID_ARTIST:
1164 case S9000_ID_HCRX:
1165 case S9000_ID_TIMBER:
1166 case S9000_ID_A1659A:
1167 case S9000_ID_A1439A:
1168 break;
1169 default:
1170 printk(KERN_WARNING "stifb: '%s' (id: 0x%08x) not supported.\n",
1171 dev_name, fb->id);
1172 goto out_err0;
1173 }
1174
1175 /* default to 8 bpp on most graphic chips */
1176 bpp = 8;
1177 xres = sti_onscreen_x(fb->sti);
1178 yres = sti_onscreen_y(fb->sti);
1179
1180 ngleGetDeviceRomData(fb);
1181
1182 /* get (virtual) io region base addr */
1183 fix->mmio_start = REGION_BASE(fb,2);
1184 fix->mmio_len = 0x400000;
1185
1186 /* Reject any device not in the NGLE family */
1187 switch (fb->id) {
1188 case S9000_ID_A1659A: /* CRX/A1659A */
1189 break;
1190 case S9000_ID_ELM: /* GRX, grayscale but else same as A1659A */
1191 var->grayscale = 1;
1192 fb->id = S9000_ID_A1659A;
1193 break;
1194 case S9000_ID_TIMBER: /* HP9000/710 Any (may be a grayscale device) */
1195 if (strstr(dev_name, "GRAYSCALE") ||
1196 strstr(dev_name, "Grayscale") ||
1197 strstr(dev_name, "grayscale"))
1198 var->grayscale = 1;
1199 break;
1200 case S9000_ID_TOMCAT: /* Dual CRX, behaves else like a CRX */
1201 /* FIXME: TomCat supports two heads:
1202 * fb.iobase = REGION_BASE(fb_info,3);
1203 * fb.screen_base = ioremap_nocache(REGION_BASE(fb_info,2),xxx);
1204 * for now we only support the left one ! */
1205 xres = fb->ngle_rom.x_size_visible;
1206 yres = fb->ngle_rom.y_size_visible;
1207 fb->id = S9000_ID_A1659A;
1208 break;
1209 case S9000_ID_A1439A: /* CRX24/A1439A */
1210 bpp = 32;
1211 break;
1212 case S9000_ID_HCRX: /* Hyperdrive/HCRX */
1213 memset(&fb->ngle_rom, 0, sizeof(fb->ngle_rom));
1214 if ((fb->sti->regions_phys[0] & 0xfc000000) ==
1215 (fb->sti->regions_phys[2] & 0xfc000000))
1216 sti_rom_address = F_EXTEND(fb->sti->regions_phys[0]);
1217 else
1218 sti_rom_address = F_EXTEND(fb->sti->regions_phys[1]);
1219
1220 fb->deviceSpecificConfig = gsc_readl(sti_rom_address);
1221 if (IS_24_DEVICE(fb)) {
1222 if (bpp_pref == 8 || bpp_pref == 32)
1223 bpp = bpp_pref;
1224 else
1225 bpp = 32;
1226 } else
1227 bpp = 8;
1228 READ_WORD(fb, REG_15);
1229 SETUP_HW(fb);
1230 break;
1231 case CRT_ID_VISUALIZE_EG:
1232 case S9000_ID_ARTIST: /* Artist */
1233 break;
1234 default:
1235 #ifdef FALLBACK_TO_1BPP
1236 printk(KERN_WARNING
1237 "stifb: Unsupported graphics card (id=0x%08x) "
1238 "- now trying 1bpp mode instead\n",
1239 fb->id);
1240 bpp = 1; /* default to 1 bpp */
1241 break;
1242 #else
1243 printk(KERN_WARNING
1244 "stifb: Unsupported graphics card (id=0x%08x) "
1245 "- skipping.\n",
1246 fb->id);
1247 goto out_err0;
1248 #endif
1249 }
1250
1251
1252 /* get framebuffer physical and virtual base addr & len (64bit ready) */
1253 fix->smem_start = F_EXTEND(fb->sti->regions_phys[1]);
1254 fix->smem_len = fb->sti->regions[1].region_desc.length * 4096;
1255
1256 fix->line_length = (fb->sti->glob_cfg->total_x * bpp) / 8;
1257 if (!fix->line_length)
1258 fix->line_length = 2048; /* default */
1259
1260 /* limit fbsize to max visible screen size */
1261 if (fix->smem_len > yres*fix->line_length)
1262 fix->smem_len = yres*fix->line_length;
1263
1264 fix->accel = FB_ACCEL_NONE;
1265
1266 switch (bpp) {
1267 case 1:
1268 fix->type = FB_TYPE_PLANES; /* well, sort of */
1269 fix->visual = FB_VISUAL_MONO10;
1270 var->red.length = var->green.length = var->blue.length = 1;
1271 break;
1272 case 8:
1273 fix->type = FB_TYPE_PACKED_PIXELS;
1274 fix->visual = FB_VISUAL_PSEUDOCOLOR;
1275 var->red.length = var->green.length = var->blue.length = 8;
1276 break;
1277 case 32:
1278 fix->type = FB_TYPE_PACKED_PIXELS;
1279 fix->visual = FB_VISUAL_DIRECTCOLOR;
1280 var->red.length = var->green.length = var->blue.length = var->transp.length = 8;
1281 var->blue.offset = 0;
1282 var->green.offset = 8;
1283 var->red.offset = 16;
1284 var->transp.offset = 24;
1285 break;
1286 default:
1287 break;
1288 }
1289
1290 var->xres = var->xres_virtual = xres;
1291 var->yres = var->yres_virtual = yres;
1292 var->bits_per_pixel = bpp;
1293
1294 strcpy(fix->id, "stifb");
1295 info->fbops = &stifb_ops;
1296 info->screen_base = ioremap_nocache(REGION_BASE(fb,1), fix->smem_len);
1297 if (!info->screen_base) {
1298 printk(KERN_ERR "stifb: failed to map memory\n");
1299 goto out_err0;
1300 }
1301 info->screen_size = fix->smem_len;
1302 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA;
1303 info->pseudo_palette = &fb->pseudo_palette;
1304
1305 /* This has to be done !!! */
1306 if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0))
1307 goto out_err1;
1308 stifb_init_display(fb);
1309
1310 if (!request_mem_region(fix->smem_start, fix->smem_len, "stifb fb")) {
1311 printk(KERN_ERR "stifb: cannot reserve fb region 0x%04lx-0x%04lx\n",
1312 fix->smem_start, fix->smem_start+fix->smem_len);
1313 goto out_err2;
1314 }
1315
1316 if (!request_mem_region(fix->mmio_start, fix->mmio_len, "stifb mmio")) {
1317 printk(KERN_ERR "stifb: cannot reserve sti mmio region 0x%04lx-0x%04lx\n",
1318 fix->mmio_start, fix->mmio_start+fix->mmio_len);
1319 goto out_err3;
1320 }
1321
1322 if (register_framebuffer(&fb->info) < 0)
1323 goto out_err4;
1324
1325 sti->info = info; /* save for unregister_framebuffer() */
1326
1327 fb_info(&fb->info, "%s %dx%d-%d frame buffer device, %s, id: %04x, mmio: 0x%04lx\n",
1328 fix->id,
1329 var->xres,
1330 var->yres,
1331 var->bits_per_pixel,
1332 dev_name,
1333 fb->id,
1334 fix->mmio_start);
1335
1336 return 0;
1337
1338
1339 out_err4:
1340 release_mem_region(fix->mmio_start, fix->mmio_len);
1341 out_err3:
1342 release_mem_region(fix->smem_start, fix->smem_len);
1343 out_err2:
1344 fb_dealloc_cmap(&info->cmap);
1345 out_err1:
1346 iounmap(info->screen_base);
1347 out_err0:
1348 kfree(fb);
1349 return -ENXIO;
1350 }
1351
1352 static int stifb_disabled __initdata;
1353
1354 int __init
1355 stifb_setup(char *options);
1356
1357 static int __init stifb_init(void)
1358 {
1359 struct sti_struct *sti;
1360 struct sti_struct *def_sti;
1361 int i;
1362
1363 #ifndef MODULE
1364 char *option = NULL;
1365
1366 if (fb_get_options("stifb", &option))
1367 return -ENODEV;
1368 stifb_setup(option);
1369 #endif
1370 if (stifb_disabled) {
1371 printk(KERN_INFO "stifb: disabled by \"stifb=off\" kernel parameter\n");
1372 return -ENXIO;
1373 }
1374
1375 def_sti = sti_get_rom(0);
1376 if (def_sti) {
1377 for (i = 1; i <= MAX_STI_ROMS; i++) {
1378 sti = sti_get_rom(i);
1379 if (!sti)
1380 break;
1381 if (sti == def_sti) {
1382 stifb_init_fb(sti, stifb_bpp_pref[i - 1]);
1383 break;
1384 }
1385 }
1386 }
1387
1388 for (i = 1; i <= MAX_STI_ROMS; i++) {
1389 sti = sti_get_rom(i);
1390 if (!sti)
1391 break;
1392 if (sti == def_sti)
1393 continue;
1394 stifb_init_fb(sti, stifb_bpp_pref[i - 1]);
1395 }
1396 return 0;
1397 }
1398
1399 /*
1400 * Cleanup
1401 */
1402
1403 static void __exit
1404 stifb_cleanup(void)
1405 {
1406 struct sti_struct *sti;
1407 int i;
1408
1409 for (i = 1; i <= MAX_STI_ROMS; i++) {
1410 sti = sti_get_rom(i);
1411 if (!sti)
1412 break;
1413 if (sti->info) {
1414 struct fb_info *info = sti->info;
1415 unregister_framebuffer(sti->info);
1416 release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
1417 release_mem_region(info->fix.smem_start, info->fix.smem_len);
1418 if (info->screen_base)
1419 iounmap(info->screen_base);
1420 fb_dealloc_cmap(&info->cmap);
1421 framebuffer_release(info);
1422 }
1423 sti->info = NULL;
1424 }
1425 }
1426
1427 int __init
1428 stifb_setup(char *options)
1429 {
1430 int i;
1431
1432 if (!options || !*options)
1433 return 1;
1434
1435 if (strncmp(options, "off", 3) == 0) {
1436 stifb_disabled = 1;
1437 options += 3;
1438 }
1439
1440 if (strncmp(options, "bpp", 3) == 0) {
1441 options += 3;
1442 for (i = 0; i < MAX_STI_ROMS; i++) {
1443 if (*options++ != ':')
1444 break;
1445 stifb_bpp_pref[i] = simple_strtoul(options, &options, 10);
1446 }
1447 }
1448 return 1;
1449 }
1450
1451 __setup("stifb=", stifb_setup);
1452
1453 module_init(stifb_init);
1454 module_exit(stifb_cleanup);
1455
1456 MODULE_AUTHOR("Helge Deller <deller@gmx.de>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>");
1457 MODULE_DESCRIPTION("Framebuffer driver for HP's NGLE series graphics cards in HP PARISC machines");
1458 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support