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10#include <linux/module.h>
11#include <linux/kernel.h>
12#include <linux/errno.h>
13#include <linux/string.h>
14#include <linux/slab.h>
15#include <linux/delay.h>
16#include <linux/init.h>
17#include <linux/fb.h>
18#include <linux/mm.h>
19
20#include <asm/io.h>
21#include <asm/prom.h>
22#include <asm/of_device.h>
23#include <asm/fbio.h>
24
25#include "sbuslib.h"
26
27
28
29
30
31static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
32 unsigned, struct fb_info *);
33static int leo_blank(int, struct fb_info *);
34
35static int leo_mmap(struct fb_info *, struct vm_area_struct *);
36static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
37static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
38
39
40
41
42
43static struct fb_ops leo_ops = {
44 .owner = THIS_MODULE,
45 .fb_setcolreg = leo_setcolreg,
46 .fb_blank = leo_blank,
47 .fb_pan_display = leo_pan_display,
48 .fb_fillrect = cfb_fillrect,
49 .fb_copyarea = cfb_copyarea,
50 .fb_imageblit = cfb_imageblit,
51 .fb_mmap = leo_mmap,
52 .fb_ioctl = leo_ioctl,
53#ifdef CONFIG_COMPAT
54 .fb_compat_ioctl = sbusfb_compat_ioctl,
55#endif
56};
57
58#define LEO_OFF_LC_SS0_KRN 0x00200000UL
59#define LEO_OFF_LC_SS0_USR 0x00201000UL
60#define LEO_OFF_LC_SS1_KRN 0x01200000UL
61#define LEO_OFF_LC_SS1_USR 0x01201000UL
62#define LEO_OFF_LD_SS0 0x00400000UL
63#define LEO_OFF_LD_SS1 0x01400000UL
64#define LEO_OFF_LD_GBL 0x00401000UL
65#define LEO_OFF_LX_KRN 0x00600000UL
66#define LEO_OFF_LX_CURSOR 0x00601000UL
67#define LEO_OFF_SS0 0x00800000UL
68#define LEO_OFF_SS1 0x01800000UL
69#define LEO_OFF_UNK 0x00602000UL
70#define LEO_OFF_UNK2 0x00000000UL
71
72#define LEO_CUR_ENABLE 0x00000080
73#define LEO_CUR_UPDATE 0x00000030
74#define LEO_CUR_PROGRESS 0x00000006
75#define LEO_CUR_UPDATECMAP 0x00000003
76
77#define LEO_CUR_TYPE_MASK 0x00000000
78#define LEO_CUR_TYPE_IMAGE 0x00000020
79#define LEO_CUR_TYPE_CMAP 0x00000050
80
81struct leo_cursor {
82 u8 xxx0[16];
83 u32 cur_type;
84 u32 cur_misc;
85 u32 cur_cursxy;
86 u32 cur_data;
87};
88
89#define LEO_KRN_TYPE_CLUT0 0x00001000
90#define LEO_KRN_TYPE_CLUT1 0x00001001
91#define LEO_KRN_TYPE_CLUT2 0x00001002
92#define LEO_KRN_TYPE_WID 0x00001003
93#define LEO_KRN_TYPE_UNK 0x00001006
94#define LEO_KRN_TYPE_VIDEO 0x00002003
95#define LEO_KRN_TYPE_CLUTDATA 0x00004000
96#define LEO_KRN_CSR_ENABLE 0x00000008
97#define LEO_KRN_CSR_PROGRESS 0x00000004
98#define LEO_KRN_CSR_UNK 0x00000002
99#define LEO_KRN_CSR_UNK2 0x00000001
100
101struct leo_lx_krn {
102 u32 krn_type;
103 u32 krn_csr;
104 u32 krn_value;
105};
106
107struct leo_lc_ss0_krn {
108 u32 misc;
109 u8 xxx0[0x800-4];
110 u32 rev;
111};
112
113struct leo_lc_ss0_usr {
114 u32 csr;
115 u32 addrspace;
116 u32 fontmsk;
117 u32 fontt;
118 u32 extent;
119 u32 src;
120 u32 dst;
121 u32 copy;
122 u32 fill;
123};
124
125struct leo_lc_ss1_krn {
126 u8 unknown;
127};
128
129struct leo_lc_ss1_usr {
130 u8 unknown;
131};
132
133struct leo_ld {
134 u8 xxx0[0xe00];
135 u32 csr;
136 u32 wid;
137 u32 wmask;
138 u32 widclip;
139 u32 vclipmin;
140 u32 vclipmax;
141 u32 pickmin;
142 u32 pickmax;
143 u32 fg;
144 u32 bg;
145 u32 src;
146 u32 dst;
147 u32 extent;
148 u32 xxx1[3];
149 u32 setsem;
150 u32 clrsem;
151 u32 clrpick;
152 u32 clrdat;
153 u32 alpha;
154 u8 xxx2[0x2c];
155 u32 winbg;
156 u32 planemask;
157 u32 rop;
158 u32 z;
159 u32 dczf;
160 u32 dczb;
161 u32 dcs;
162 u32 dczs;
163 u32 pickfb;
164 u32 pickbb;
165 u32 dcfc;
166 u32 forcecol;
167 u32 door[8];
168 u32 pick[5];
169};
170
171#define LEO_SS1_MISC_ENABLE 0x00000001
172#define LEO_SS1_MISC_STEREO 0x00000002
173struct leo_ld_ss1 {
174 u8 xxx0[0xef4];
175 u32 ss1_misc;
176};
177
178struct leo_ld_gbl {
179 u8 unknown;
180};
181
182struct leo_par {
183 spinlock_t lock;
184 struct leo_lx_krn __iomem *lx_krn;
185 struct leo_lc_ss0_usr __iomem *lc_ss0_usr;
186 struct leo_ld_ss0 __iomem *ld_ss0;
187 struct leo_ld_ss1 __iomem *ld_ss1;
188 struct leo_cursor __iomem *cursor;
189 u32 extent;
190 u32 clut_data[256];
191
192 u32 flags;
193#define LEO_FLAG_BLANKED 0x00000001
194
195 unsigned long physbase;
196 unsigned long which_io;
197 unsigned long fbsize;
198};
199
200static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
201{
202 int i;
203
204 for (i = 0;
205 (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && i < 300000;
206 i++)
207 udelay (1);
208 return;
209}
210
211
212
213
214
215
216
217
218
219
220static int leo_setcolreg(unsigned regno,
221 unsigned red, unsigned green, unsigned blue,
222 unsigned transp, struct fb_info *info)
223{
224 struct leo_par *par = (struct leo_par *) info->par;
225 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
226 unsigned long flags;
227 u32 val;
228 int i;
229
230 if (regno >= 256)
231 return 1;
232
233 red >>= 8;
234 green >>= 8;
235 blue >>= 8;
236
237 par->clut_data[regno] = red | (green << 8) | (blue << 16);
238
239 spin_lock_irqsave(&par->lock, flags);
240
241 leo_wait(lx_krn);
242
243 sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
244 for (i = 0; i < 256; i++)
245 sbus_writel(par->clut_data[i], &lx_krn->krn_value);
246 sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
247
248 val = sbus_readl(&lx_krn->krn_csr);
249 val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
250 sbus_writel(val, &lx_krn->krn_csr);
251
252 spin_unlock_irqrestore(&par->lock, flags);
253
254 return 0;
255}
256
257
258
259
260
261
262static int leo_blank(int blank, struct fb_info *info)
263{
264 struct leo_par *par = (struct leo_par *) info->par;
265 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
266 unsigned long flags;
267 u32 val;
268
269 spin_lock_irqsave(&par->lock, flags);
270
271 switch (blank) {
272 case FB_BLANK_UNBLANK:
273 val = sbus_readl(&lx_krn->krn_csr);
274 val |= LEO_KRN_CSR_ENABLE;
275 sbus_writel(val, &lx_krn->krn_csr);
276 par->flags &= ~LEO_FLAG_BLANKED;
277 break;
278
279 case FB_BLANK_NORMAL:
280 case FB_BLANK_VSYNC_SUSPEND:
281 case FB_BLANK_HSYNC_SUSPEND:
282 case FB_BLANK_POWERDOWN:
283 val = sbus_readl(&lx_krn->krn_csr);
284 val &= ~LEO_KRN_CSR_ENABLE;
285 sbus_writel(val, &lx_krn->krn_csr);
286 par->flags |= LEO_FLAG_BLANKED;
287 break;
288 }
289
290 spin_unlock_irqrestore(&par->lock, flags);
291
292 return 0;
293}
294
295static struct sbus_mmap_map leo_mmap_map[] = {
296 {
297 .voff = LEO_SS0_MAP,
298 .poff = LEO_OFF_SS0,
299 .size = 0x800000
300 },
301 {
302 .voff = LEO_LC_SS0_USR_MAP,
303 .poff = LEO_OFF_LC_SS0_USR,
304 .size = 0x1000
305 },
306 {
307 .voff = LEO_LD_SS0_MAP,
308 .poff = LEO_OFF_LD_SS0,
309 .size = 0x1000
310 },
311 {
312 .voff = LEO_LX_CURSOR_MAP,
313 .poff = LEO_OFF_LX_CURSOR,
314 .size = 0x1000
315 },
316 {
317 .voff = LEO_SS1_MAP,
318 .poff = LEO_OFF_SS1,
319 .size = 0x800000
320 },
321 {
322 .voff = LEO_LC_SS1_USR_MAP,
323 .poff = LEO_OFF_LC_SS1_USR,
324 .size = 0x1000
325 },
326 {
327 .voff = LEO_LD_SS1_MAP,
328 .poff = LEO_OFF_LD_SS1,
329 .size = 0x1000
330 },
331 {
332 .voff = LEO_UNK_MAP,
333 .poff = LEO_OFF_UNK,
334 .size = 0x1000
335 },
336 {
337 .voff = LEO_LX_KRN_MAP,
338 .poff = LEO_OFF_LX_KRN,
339 .size = 0x1000
340 },
341 {
342 .voff = LEO_LC_SS0_KRN_MAP,
343 .poff = LEO_OFF_LC_SS0_KRN,
344 .size = 0x1000
345 },
346 {
347 .voff = LEO_LC_SS1_KRN_MAP,
348 .poff = LEO_OFF_LC_SS1_KRN,
349 .size = 0x1000
350 },
351 {
352 .voff = LEO_LD_GBL_MAP,
353 .poff = LEO_OFF_LD_GBL,
354 .size = 0x1000
355 },
356 {
357 .voff = LEO_UNK2_MAP,
358 .poff = LEO_OFF_UNK2,
359 .size = 0x100000
360 },
361 { .size = 0 }
362};
363
364static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
365{
366 struct leo_par *par = (struct leo_par *)info->par;
367
368 return sbusfb_mmap_helper(leo_mmap_map,
369 par->physbase, par->fbsize,
370 par->which_io, vma);
371}
372
373static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
374{
375 struct leo_par *par = (struct leo_par *) info->par;
376
377 return sbusfb_ioctl_helper(cmd, arg, info,
378 FBTYPE_SUNLEO, 32, par->fbsize);
379}
380
381
382
383
384
385static void
386leo_init_fix(struct fb_info *info, struct device_node *dp)
387{
388 strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
389
390 info->fix.type = FB_TYPE_PACKED_PIXELS;
391 info->fix.visual = FB_VISUAL_TRUECOLOR;
392
393 info->fix.line_length = 8192;
394
395 info->fix.accel = FB_ACCEL_SUN_LEO;
396}
397
398static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
399{
400 struct leo_par *par = (struct leo_par *) info->par;
401 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
402 struct fb_wid_item *wi;
403 unsigned long flags;
404 u32 val;
405 int i, j;
406
407 spin_lock_irqsave(&par->lock, flags);
408
409 leo_wait(lx_krn);
410
411 for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
412 switch(wi->wi_type) {
413 case FB_WID_DBL_8:
414 j = (wi->wi_index & 0xf) + 0x40;
415 break;
416
417 case FB_WID_DBL_24:
418 j = wi->wi_index & 0x3f;
419 break;
420
421 default:
422 continue;
423 };
424 sbus_writel(0x5800 + j, &lx_krn->krn_type);
425 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
426 }
427 sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
428
429 val = sbus_readl(&lx_krn->krn_csr);
430 val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
431 sbus_writel(val, &lx_krn->krn_csr);
432
433 spin_unlock_irqrestore(&par->lock, flags);
434}
435
436static void leo_init_wids(struct fb_info *info)
437{
438 struct fb_wid_item wi;
439 struct fb_wid_list wl;
440
441 wl.wl_count = 1;
442 wl.wl_list = &wi;
443 wi.wi_type = FB_WID_DBL_8;
444 wi.wi_index = 0;
445 wi.wi_values [0] = 0x2c0;
446 leo_wid_put(info, &wl);
447 wi.wi_index = 1;
448 wi.wi_values [0] = 0x30;
449 leo_wid_put(info, &wl);
450 wi.wi_index = 2;
451 wi.wi_values [0] = 0x20;
452 leo_wid_put(info, &wl);
453 wi.wi_type = FB_WID_DBL_24;
454 wi.wi_index = 1;
455 wi.wi_values [0] = 0x30;
456 leo_wid_put(info, &wl);
457
458}
459
460static void leo_switch_from_graph(struct fb_info *info)
461{
462 struct leo_par *par = (struct leo_par *) info->par;
463 struct leo_ld __iomem *ss = (struct leo_ld __iomem *) par->ld_ss0;
464 unsigned long flags;
465 u32 val;
466
467 spin_lock_irqsave(&par->lock, flags);
468
469 par->extent = ((info->var.xres - 1) |
470 ((info->var.yres - 1) << 16));
471
472 sbus_writel(0xffffffff, &ss->wid);
473 sbus_writel(0xffff, &ss->wmask);
474 sbus_writel(0, &ss->vclipmin);
475 sbus_writel(par->extent, &ss->vclipmax);
476 sbus_writel(0, &ss->fg);
477 sbus_writel(0xff000000, &ss->planemask);
478 sbus_writel(0x310850, &ss->rop);
479 sbus_writel(0, &ss->widclip);
480 sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
481 &par->lc_ss0_usr->extent);
482 sbus_writel(4, &par->lc_ss0_usr->addrspace);
483 sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
484 sbus_writel(0, &par->lc_ss0_usr->fontt);
485 do {
486 val = sbus_readl(&par->lc_ss0_usr->csr);
487 } while (val & 0x20000000);
488
489 spin_unlock_irqrestore(&par->lock, flags);
490}
491
492static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
493{
494
495
496
497 leo_switch_from_graph(info);
498
499 if (var->xoffset || var->yoffset || var->vmode)
500 return -EINVAL;
501 return 0;
502}
503
504static void leo_init_hw(struct fb_info *info)
505{
506 struct leo_par *par = (struct leo_par *) info->par;
507 u32 val;
508
509 val = sbus_readl(&par->ld_ss1->ss1_misc);
510 val |= LEO_SS1_MISC_ENABLE;
511 sbus_writel(val, &par->ld_ss1->ss1_misc);
512
513 leo_switch_from_graph(info);
514}
515
516static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
517{
518 var->red.offset = 0;
519 var->red.length = 8;
520 var->green.offset = 8;
521 var->green.length = 8;
522 var->blue.offset = 16;
523 var->blue.length = 8;
524 var->transp.offset = 0;
525 var->transp.length = 0;
526}
527
528static void leo_unmap_regs(struct of_device *op, struct fb_info *info,
529 struct leo_par *par)
530{
531 if (par->lc_ss0_usr)
532 of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000);
533 if (par->ld_ss0)
534 of_iounmap(&op->resource[0], par->ld_ss0, 0x1000);
535 if (par->ld_ss1)
536 of_iounmap(&op->resource[0], par->ld_ss1, 0x1000);
537 if (par->lx_krn)
538 of_iounmap(&op->resource[0], par->lx_krn, 0x1000);
539 if (par->cursor)
540 of_iounmap(&op->resource[0],
541 par->cursor, sizeof(struct leo_cursor));
542 if (info->screen_base)
543 of_iounmap(&op->resource[0], info->screen_base, 0x800000);
544}
545
546static int __devinit leo_probe(struct of_device *op, const struct of_device_id *match)
547{
548 struct device_node *dp = op->node;
549 struct fb_info *info;
550 struct leo_par *par;
551 int linebytes, err;
552
553 info = framebuffer_alloc(sizeof(struct leo_par), &op->dev);
554
555 err = -ENOMEM;
556 if (!info)
557 goto out_err;
558 par = info->par;
559
560 spin_lock_init(&par->lock);
561
562 par->physbase = op->resource[0].start;
563 par->which_io = op->resource[0].flags & IORESOURCE_BITS;
564
565 sbusfb_fill_var(&info->var, dp->node, 32);
566 leo_fixup_var_rgb(&info->var);
567
568 linebytes = of_getintprop_default(dp, "linebytes",
569 info->var.xres);
570 par->fbsize = PAGE_ALIGN(linebytes * info->var.yres);
571
572 par->lc_ss0_usr =
573 of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR,
574 0x1000, "leolc ss0usr");
575 par->ld_ss0 =
576 of_ioremap(&op->resource[0], LEO_OFF_LD_SS0,
577 0x1000, "leold ss0");
578 par->ld_ss1 =
579 of_ioremap(&op->resource[0], LEO_OFF_LD_SS1,
580 0x1000, "leold ss1");
581 par->lx_krn =
582 of_ioremap(&op->resource[0], LEO_OFF_LX_KRN,
583 0x1000, "leolx krn");
584 par->cursor =
585 of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR,
586 sizeof(struct leo_cursor), "leolx cursor");
587 info->screen_base =
588 of_ioremap(&op->resource[0], LEO_OFF_SS0,
589 0x800000, "leo ram");
590 if (!par->lc_ss0_usr ||
591 !par->ld_ss0 ||
592 !par->ld_ss1 ||
593 !par->lx_krn ||
594 !par->cursor ||
595 !info->screen_base)
596 goto out_unmap_regs;
597
598 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
599 info->fbops = &leo_ops;
600
601 leo_init_wids(info);
602 leo_init_hw(info);
603
604 leo_blank(0, info);
605
606 if (fb_alloc_cmap(&info->cmap, 256, 0))
607 goto out_unmap_regs;
608
609 leo_init_fix(info, dp);
610
611 err = register_framebuffer(info);
612 if (err < 0)
613 goto out_dealloc_cmap;
614
615 dev_set_drvdata(&op->dev, info);
616
617 printk("%s: leo at %lx:%lx\n",
618 dp->full_name,
619 par->which_io, par->physbase);
620
621 return 0;
622
623out_dealloc_cmap:
624 fb_dealloc_cmap(&info->cmap);
625
626out_unmap_regs:
627 leo_unmap_regs(op, info, par);
628 framebuffer_release(info);
629
630out_err:
631 return err;
632}
633
634static int __devexit leo_remove(struct of_device *op)
635{
636 struct fb_info *info = dev_get_drvdata(&op->dev);
637 struct leo_par *par = info->par;
638
639 unregister_framebuffer(info);
640 fb_dealloc_cmap(&info->cmap);
641
642 leo_unmap_regs(op, info, par);
643
644 framebuffer_release(info);
645
646 dev_set_drvdata(&op->dev, NULL);
647
648 return 0;
649}
650
651static struct of_device_id leo_match[] = {
652 {
653 .name = "leo",
654 },
655 {},
656};
657MODULE_DEVICE_TABLE(of, leo_match);
658
659static struct of_platform_driver leo_driver = {
660 .name = "leo",
661 .match_table = leo_match,
662 .probe = leo_probe,
663 .remove = __devexit_p(leo_remove),
664};
665
666static int __init leo_init(void)
667{
668 if (fb_get_options("leofb", NULL))
669 return -ENODEV;
670
671 return of_register_driver(&leo_driver, &of_bus_type);
672}
673
674static void __exit leo_exit(void)
675{
676 of_unregister_driver(&leo_driver);
677}
678
679module_init(leo_init);
680module_exit(leo_exit);
681
682MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
683MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
684MODULE_VERSION("2.0");
685MODULE_LICENSE("GPL");
686
