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path: root/drivers/video/leo.c
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-rw-r--r--drivers/video/leo.c666
1 files changed, 666 insertions, 0 deletions
diff --git a/drivers/video/leo.c b/drivers/video/leo.c
new file mode 100644
index 000000000000..7e1e7fb168bd
--- /dev/null
+++ b/drivers/video/leo.c
@@ -0,0 +1,666 @@
1/* leo.c: LEO frame buffer driver
2 *
3 * Copyright (C) 2003 David S. Miller (davem@redhat.com)
4 * Copyright (C) 1996-1999 Jakub Jelinek (jj@ultra.linux.cz)
5 * Copyright (C) 1997 Michal Rehacek (Michal.Rehacek@st.mff.cuni.cz)
6 *
7 * Driver layout based loosely on tgafb.c, see that file for credits.
8 */
9
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/sbus.h>
22#include <asm/oplib.h>
23#include <asm/fbio.h>
24
25#include "sbuslib.h"
26
27/*
28 * Local functions.
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 file *, struct vm_area_struct *);
36static int leo_ioctl(struct inode *, struct file *, unsigned int,
37 unsigned long, struct fb_info *);
38static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
39
40/*
41 * Frame buffer operations
42 */
43
44static struct fb_ops leo_ops = {
45 .owner = THIS_MODULE,
46 .fb_setcolreg = leo_setcolreg,
47 .fb_blank = leo_blank,
48 .fb_pan_display = leo_pan_display,
49 .fb_fillrect = cfb_fillrect,
50 .fb_copyarea = cfb_copyarea,
51 .fb_imageblit = cfb_imageblit,
52 .fb_mmap = leo_mmap,
53 .fb_ioctl = leo_ioctl,
54 .fb_cursor = soft_cursor,
55};
56
57#define LEO_OFF_LC_SS0_KRN 0x00200000UL
58#define LEO_OFF_LC_SS0_USR 0x00201000UL
59#define LEO_OFF_LC_SS1_KRN 0x01200000UL
60#define LEO_OFF_LC_SS1_USR 0x01201000UL
61#define LEO_OFF_LD_SS0 0x00400000UL
62#define LEO_OFF_LD_SS1 0x01400000UL
63#define LEO_OFF_LD_GBL 0x00401000UL
64#define LEO_OFF_LX_KRN 0x00600000UL
65#define LEO_OFF_LX_CURSOR 0x00601000UL
66#define LEO_OFF_SS0 0x00800000UL
67#define LEO_OFF_SS1 0x01800000UL
68#define LEO_OFF_UNK 0x00602000UL
69#define LEO_OFF_UNK2 0x00000000UL
70
71#define LEO_CUR_ENABLE 0x00000080
72#define LEO_CUR_UPDATE 0x00000030
73#define LEO_CUR_PROGRESS 0x00000006
74#define LEO_CUR_UPDATECMAP 0x00000003
75
76#define LEO_CUR_TYPE_MASK 0x00000000
77#define LEO_CUR_TYPE_IMAGE 0x00000020
78#define LEO_CUR_TYPE_CMAP 0x00000050
79
80struct leo_cursor {
81 u8 xxx0[16];
82 volatile u32 cur_type;
83 volatile u32 cur_misc;
84 volatile u32 cur_cursxy;
85 volatile u32 cur_data;
86};
87
88#define LEO_KRN_TYPE_CLUT0 0x00001000
89#define LEO_KRN_TYPE_CLUT1 0x00001001
90#define LEO_KRN_TYPE_CLUT2 0x00001002
91#define LEO_KRN_TYPE_WID 0x00001003
92#define LEO_KRN_TYPE_UNK 0x00001006
93#define LEO_KRN_TYPE_VIDEO 0x00002003
94#define LEO_KRN_TYPE_CLUTDATA 0x00004000
95#define LEO_KRN_CSR_ENABLE 0x00000008
96#define LEO_KRN_CSR_PROGRESS 0x00000004
97#define LEO_KRN_CSR_UNK 0x00000002
98#define LEO_KRN_CSR_UNK2 0x00000001
99
100struct leo_lx_krn {
101 volatile u32 krn_type;
102 volatile u32 krn_csr;
103 volatile u32 krn_value;
104};
105
106struct leo_lc_ss0_krn {
107 volatile u32 misc;
108 u8 xxx0[0x800-4];
109 volatile u32 rev;
110};
111
112struct leo_lc_ss0_usr {
113 volatile u32 csr;
114 volatile u32 addrspace;
115 volatile u32 fontmsk;
116 volatile u32 fontt;
117 volatile u32 extent;
118 volatile u32 src;
119 u32 dst;
120 volatile u32 copy;
121 volatile u32 fill;
122};
123
124struct leo_lc_ss1_krn {
125 u8 unknown;
126};
127
128struct leo_lc_ss1_usr {
129 u8 unknown;
130};
131
132struct leo_ld {
133 u8 xxx0[0xe00];
134 volatile u32 csr;
135 volatile u32 wid;
136 volatile u32 wmask;
137 volatile u32 widclip;
138 volatile u32 vclipmin;
139 volatile u32 vclipmax;
140 volatile u32 pickmin; /* SS1 only */
141 volatile u32 pickmax; /* SS1 only */
142 volatile u32 fg;
143 volatile u32 bg;
144 volatile u32 src; /* Copy/Scroll (SS0 only) */
145 volatile u32 dst; /* Copy/Scroll/Fill (SS0 only) */
146 volatile u32 extent; /* Copy/Scroll/Fill size (SS0 only) */
147 u32 xxx1[3];
148 volatile u32 setsem; /* SS1 only */
149 volatile u32 clrsem; /* SS1 only */
150 volatile u32 clrpick; /* SS1 only */
151 volatile u32 clrdat; /* SS1 only */
152 volatile u32 alpha; /* SS1 only */
153 u8 xxx2[0x2c];
154 volatile u32 winbg;
155 volatile u32 planemask;
156 volatile u32 rop;
157 volatile u32 z;
158 volatile u32 dczf; /* SS1 only */
159 volatile u32 dczb; /* SS1 only */
160 volatile u32 dcs; /* SS1 only */
161 volatile u32 dczs; /* SS1 only */
162 volatile u32 pickfb; /* SS1 only */
163 volatile u32 pickbb; /* SS1 only */
164 volatile u32 dcfc; /* SS1 only */
165 volatile u32 forcecol; /* SS1 only */
166 volatile u32 door[8]; /* SS1 only */
167 volatile u32 pick[5]; /* SS1 only */
168};
169
170#define LEO_SS1_MISC_ENABLE 0x00000001
171#define LEO_SS1_MISC_STEREO 0x00000002
172struct leo_ld_ss1 {
173 u8 xxx0[0xef4];
174 volatile u32 ss1_misc;
175};
176
177struct leo_ld_gbl {
178 u8 unknown;
179};
180
181struct leo_par {
182 spinlock_t lock;
183 struct leo_lx_krn __iomem *lx_krn;
184 struct leo_lc_ss0_usr __iomem *lc_ss0_usr;
185 struct leo_ld_ss0 __iomem *ld_ss0;
186 struct leo_ld_ss1 __iomem *ld_ss1;
187 struct leo_cursor __iomem *cursor;
188 u32 extent;
189 u32 clut_data[256];
190
191 u32 flags;
192#define LEO_FLAG_BLANKED 0x00000001
193
194 unsigned long physbase;
195 unsigned long fbsize;
196
197 struct sbus_dev *sdev;
198 struct list_head list;
199};
200
201static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
202{
203 int i;
204
205 for (i = 0;
206 (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && i < 300000;
207 i++)
208 udelay (1); /* Busy wait at most 0.3 sec */
209 return;
210}
211
212/**
213 * leo_setcolreg - Optional function. Sets a color register.
214 * @regno: boolean, 0 copy local, 1 get_user() function
215 * @red: frame buffer colormap structure
216 * @green: The green value which can be up to 16 bits wide
217 * @blue: The blue value which can be up to 16 bits wide.
218 * @transp: If supported the alpha value which can be up to 16 bits wide.
219 * @info: frame buffer info structure
220 */
221static int leo_setcolreg(unsigned regno,
222 unsigned red, unsigned green, unsigned blue,
223 unsigned transp, struct fb_info *info)
224{
225 struct leo_par *par = (struct leo_par *) info->par;
226 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
227 unsigned long flags;
228 u32 val;
229 int i;
230
231 if (regno >= 256)
232 return 1;
233
234 red >>= 8;
235 green >>= 8;
236 blue >>= 8;
237
238 par->clut_data[regno] = red | (green << 8) | (blue << 16);
239
240 spin_lock_irqsave(&par->lock, flags);
241
242 leo_wait(lx_krn);
243
244 sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
245 for (i = 0; i < 256; i++)
246 sbus_writel(par->clut_data[i], &lx_krn->krn_value);
247 sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
248
249 val = sbus_readl(&lx_krn->krn_csr);
250 val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
251 sbus_writel(val, &lx_krn->krn_csr);
252
253 spin_unlock_irqrestore(&par->lock, flags);
254
255 return 0;
256}
257
258/**
259 * leo_blank - Optional function. Blanks the display.
260 * @blank_mode: the blank mode we want.
261 * @info: frame buffer structure that represents a single frame buffer
262 */
263static int leo_blank(int blank, struct fb_info *info)
264{
265 struct leo_par *par = (struct leo_par *) info->par;
266 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
267 unsigned long flags;
268 u32 val;
269
270 spin_lock_irqsave(&par->lock, flags);
271
272 switch (blank) {
273 case FB_BLANK_UNBLANK: /* Unblanking */
274 val = sbus_readl(&lx_krn->krn_csr);
275 val |= LEO_KRN_CSR_ENABLE;
276 sbus_writel(val, &lx_krn->krn_csr);
277 par->flags &= ~LEO_FLAG_BLANKED;
278 break;
279
280 case FB_BLANK_NORMAL: /* Normal blanking */
281 case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
282 case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
283 case FB_BLANK_POWERDOWN: /* Poweroff */
284 val = sbus_readl(&lx_krn->krn_csr);
285 val &= ~LEO_KRN_CSR_ENABLE;
286 sbus_writel(val, &lx_krn->krn_csr);
287 par->flags |= LEO_FLAG_BLANKED;
288 break;
289 }
290
291 spin_unlock_irqrestore(&par->lock, flags);
292
293 return 0;
294}
295
296static struct sbus_mmap_map leo_mmap_map[] = {
297 {
298 .voff = LEO_SS0_MAP,
299 .poff = LEO_OFF_SS0,
300 .size = 0x800000
301 },
302 {
303 .voff = LEO_LC_SS0_USR_MAP,
304 .poff = LEO_OFF_LC_SS0_USR,
305 .size = 0x1000
306 },
307 {
308 .voff = LEO_LD_SS0_MAP,
309 .poff = LEO_OFF_LD_SS0,
310 .size = 0x1000
311 },
312 {
313 .voff = LEO_LX_CURSOR_MAP,
314 .poff = LEO_OFF_LX_CURSOR,
315 .size = 0x1000
316 },
317 {
318 .voff = LEO_SS1_MAP,
319 .poff = LEO_OFF_SS1,
320 .size = 0x800000
321 },
322 {
323 .voff = LEO_LC_SS1_USR_MAP,
324 .poff = LEO_OFF_LC_SS1_USR,
325 .size = 0x1000
326 },
327 {
328 .voff = LEO_LD_SS1_MAP,
329 .poff = LEO_OFF_LD_SS1,
330 .size = 0x1000
331 },
332 {
333 .voff = LEO_UNK_MAP,
334 .poff = LEO_OFF_UNK,
335 .size = 0x1000
336 },
337 {
338 .voff = LEO_LX_KRN_MAP,
339 .poff = LEO_OFF_LX_KRN,
340 .size = 0x1000
341 },
342 {
343 .voff = LEO_LC_SS0_KRN_MAP,
344 .poff = LEO_OFF_LC_SS0_KRN,
345 .size = 0x1000
346 },
347 {
348 .voff = LEO_LC_SS1_KRN_MAP,
349 .poff = LEO_OFF_LC_SS1_KRN,
350 .size = 0x1000
351 },
352 {
353 .voff = LEO_LD_GBL_MAP,
354 .poff = LEO_OFF_LD_GBL,
355 .size = 0x1000
356 },
357 {
358 .voff = LEO_UNK2_MAP,
359 .poff = LEO_OFF_UNK2,
360 .size = 0x100000
361 },
362 { .size = 0 }
363};
364
365static int leo_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
366{
367 struct leo_par *par = (struct leo_par *)info->par;
368
369 return sbusfb_mmap_helper(leo_mmap_map,
370 par->physbase, par->fbsize,
371 par->sdev->reg_addrs[0].which_io,
372 vma);
373}
374
375static int leo_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
376 unsigned long arg, struct fb_info *info)
377{
378 struct leo_par *par = (struct leo_par *) info->par;
379
380 return sbusfb_ioctl_helper(cmd, arg, info,
381 FBTYPE_SUNLEO, 32, par->fbsize);
382}
383
384/*
385 * Initialisation
386 */
387
388static void
389leo_init_fix(struct fb_info *info)
390{
391 struct leo_par *par = (struct leo_par *)info->par;
392
393 strlcpy(info->fix.id, par->sdev->prom_name, sizeof(info->fix.id));
394
395 info->fix.type = FB_TYPE_PACKED_PIXELS;
396 info->fix.visual = FB_VISUAL_TRUECOLOR;
397
398 info->fix.line_length = 8192;
399
400 info->fix.accel = FB_ACCEL_SUN_LEO;
401}
402
403static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
404{
405 struct leo_par *par = (struct leo_par *) info->par;
406 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
407 struct fb_wid_item *wi;
408 unsigned long flags;
409 u32 val;
410 int i, j;
411
412 spin_lock_irqsave(&par->lock, flags);
413
414 leo_wait(lx_krn);
415
416 for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
417 switch(wi->wi_type) {
418 case FB_WID_DBL_8:
419 j = (wi->wi_index & 0xf) + 0x40;
420 break;
421
422 case FB_WID_DBL_24:
423 j = wi->wi_index & 0x3f;
424 break;
425
426 default:
427 continue;
428 };
429 sbus_writel(0x5800 + j, &lx_krn->krn_type);
430 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
431 }
432 sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
433
434 val = sbus_readl(&lx_krn->krn_csr);
435 val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
436 sbus_writel(val, &lx_krn->krn_csr);
437
438 spin_unlock_irqrestore(&par->lock, flags);
439}
440
441static void leo_init_wids(struct fb_info *info)
442{
443 struct fb_wid_item wi;
444 struct fb_wid_list wl;
445
446 wl.wl_count = 1;
447 wl.wl_list = &wi;
448 wi.wi_type = FB_WID_DBL_8;
449 wi.wi_index = 0;
450 wi.wi_values [0] = 0x2c0;
451 leo_wid_put(info, &wl);
452 wi.wi_index = 1;
453 wi.wi_values [0] = 0x30;
454 leo_wid_put(info, &wl);
455 wi.wi_index = 2;
456 wi.wi_values [0] = 0x20;
457 leo_wid_put(info, &wl);
458 wi.wi_type = FB_WID_DBL_24;
459 wi.wi_index = 1;
460 wi.wi_values [0] = 0x30;
461 leo_wid_put(info, &wl);
462
463}
464
465static void leo_switch_from_graph(struct fb_info *info)
466{
467 struct leo_par *par = (struct leo_par *) info->par;
468 struct leo_ld __iomem *ss = (struct leo_ld __iomem *) par->ld_ss0;
469 unsigned long flags;
470 u32 val;
471
472 spin_lock_irqsave(&par->lock, flags);
473
474 par->extent = ((info->var.xres - 1) |
475 ((info->var.yres - 1) << 16));
476
477 sbus_writel(0xffffffff, &ss->wid);
478 sbus_writel(0xffff, &ss->wmask);
479 sbus_writel(0, &ss->vclipmin);
480 sbus_writel(par->extent, &ss->vclipmax);
481 sbus_writel(0, &ss->fg);
482 sbus_writel(0xff000000, &ss->planemask);
483 sbus_writel(0x310850, &ss->rop);
484 sbus_writel(0, &ss->widclip);
485 sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
486 &par->lc_ss0_usr->extent);
487 sbus_writel(4, &par->lc_ss0_usr->addrspace);
488 sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
489 sbus_writel(0, &par->lc_ss0_usr->fontt);
490 do {
491 val = sbus_readl(&par->lc_ss0_usr->csr);
492 } while (val & 0x20000000);
493
494 spin_unlock_irqrestore(&par->lock, flags);
495}
496
497static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
498{
499 /* We just use this to catch switches out of
500 * graphics mode.
501 */
502 leo_switch_from_graph(info);
503
504 if (var->xoffset || var->yoffset || var->vmode)
505 return -EINVAL;
506 return 0;
507}
508
509static void leo_init_hw(struct fb_info *info)
510{
511 struct leo_par *par = (struct leo_par *) info->par;
512 u32 val;
513
514 val = sbus_readl(&par->ld_ss1->ss1_misc);
515 val |= LEO_SS1_MISC_ENABLE;
516 sbus_writel(val, &par->ld_ss1->ss1_misc);
517
518 leo_switch_from_graph(info);
519}
520
521static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
522{
523 var->red.offset = 0;
524 var->red.length = 8;
525 var->green.offset = 8;
526 var->green.length = 8;
527 var->blue.offset = 16;
528 var->blue.length = 8;
529 var->transp.offset = 0;
530 var->transp.length = 0;
531}
532
533struct all_info {
534 struct fb_info info;
535 struct leo_par par;
536 struct list_head list;
537};
538static LIST_HEAD(leo_list);
539
540static void leo_init_one(struct sbus_dev *sdev)
541{
542 struct all_info *all;
543 int linebytes;
544
545 all = kmalloc(sizeof(*all), GFP_KERNEL);
546 if (!all) {
547 printk(KERN_ERR "leo: Cannot allocate memory.\n");
548 return;
549 }
550 memset(all, 0, sizeof(*all));
551
552 INIT_LIST_HEAD(&all->list);
553
554 spin_lock_init(&all->par.lock);
555 all->par.sdev = sdev;
556
557 all->par.physbase = sdev->reg_addrs[0].phys_addr;
558
559 sbusfb_fill_var(&all->info.var, sdev->prom_node, 32);
560 leo_fixup_var_rgb(&all->info.var);
561
562 linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
563 all->info.var.xres);
564 all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
565
566#ifdef CONFIG_SPARC32
567 all->info.screen_base = (char __iomem *)
568 prom_getintdefault(sdev->prom_node, "address", 0);
569#endif
570 if (!all->info.screen_base)
571 all->info.screen_base =
572 sbus_ioremap(&sdev->resource[0], LEO_OFF_SS0,
573 0x800000, "leo ram");
574
575 all->par.lc_ss0_usr =
576 sbus_ioremap(&sdev->resource[0], LEO_OFF_LC_SS0_USR,
577 0x1000, "leolc ss0usr");
578 all->par.ld_ss0 =
579 sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS0,
580 0x1000, "leold ss0");
581 all->par.ld_ss1 =
582 sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS1,
583 0x1000, "leold ss1");
584 all->par.lx_krn =
585 sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_KRN,
586 0x1000, "leolx krn");
587 all->par.cursor =
588 sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_CURSOR,
589 sizeof(struct leo_cursor), "leolx cursor");
590
591 all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
592 all->info.fbops = &leo_ops;
593 all->info.par = &all->par;
594
595 leo_init_wids(&all->info);
596 leo_init_hw(&all->info);
597
598 leo_blank(0, &all->info);
599
600 if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
601 printk(KERN_ERR "leo: Could not allocate color map.\n");
602 kfree(all);
603 return;
604 }
605
606 leo_init_fix(&all->info);
607
608 if (register_framebuffer(&all->info) < 0) {
609 printk(KERN_ERR "leo: Could not register framebuffer.\n");
610 fb_dealloc_cmap(&all->info.cmap);
611 kfree(all);
612 return;
613 }
614
615 list_add(&all->list, &leo_list);
616
617 printk("leo: %s at %lx:%lx\n",
618 sdev->prom_name,
619 (long) sdev->reg_addrs[0].which_io,
620 (long) sdev->reg_addrs[0].phys_addr);
621}
622
623int __init leo_init(void)
624{
625 struct sbus_bus *sbus;
626 struct sbus_dev *sdev;
627
628 if (fb_get_options("leofb", NULL))
629 return -ENODEV;
630
631 for_all_sbusdev(sdev, sbus) {
632 if (!strcmp(sdev->prom_name, "leo"))
633 leo_init_one(sdev);
634 }
635
636 return 0;
637}
638
639void __exit leo_exit(void)
640{
641 struct list_head *pos, *tmp;
642
643 list_for_each_safe(pos, tmp, &leo_list) {
644 struct all_info *all = list_entry(pos, typeof(*all), list);
645
646 unregister_framebuffer(&all->info);
647 fb_dealloc_cmap(&all->info.cmap);
648 kfree(all);
649 }
650}
651
652int __init
653leo_setup(char *arg)
654{
655 /* No cmdline options yet... */
656 return 0;
657}
658
659module_init(leo_init);
660#ifdef MODULE
661module_exit(leo_exit);
662#endif
663
664MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
665MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
666MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 17:18:14 -0500