1 /* leo.c: LEO frame buffer driver
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)
7 * Driver layout based loosely on tgafb.c, see that file for credits.
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>
22 #include <asm/oplib.h>
31 static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
32 unsigned, struct fb_info *);
33 static int leo_blank(int, struct fb_info *);
35 static int leo_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
36 static int leo_ioctl(struct inode *, struct file *, unsigned int,
37 unsigned long, struct fb_info *);
38 static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
41 * Frame buffer operations
44 static struct fb_ops leo_ops = {
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,
53 .fb_ioctl = leo_ioctl,
54 .fb_cursor = soft_cursor,
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
71 #define LEO_CUR_ENABLE 0x00000080
72 #define LEO_CUR_UPDATE 0x00000030
73 #define LEO_CUR_PROGRESS 0x00000006
74 #define LEO_CUR_UPDATECMAP 0x00000003
76 #define LEO_CUR_TYPE_MASK 0x00000000
77 #define LEO_CUR_TYPE_IMAGE 0x00000020
78 #define LEO_CUR_TYPE_CMAP 0x00000050
82 volatile u32 cur_type;
83 volatile u32 cur_misc;
84 volatile u32 cur_cursxy;
85 volatile u32 cur_data;
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
101 volatile u32 krn_type;
102 volatile u32 krn_csr;
103 volatile u32 krn_value;
106 struct leo_lc_ss0_krn {
112 struct leo_lc_ss0_usr {
114 volatile u32 addrspace;
115 volatile u32 fontmsk;
124 struct leo_lc_ss1_krn {
128 struct leo_lc_ss1_usr {
137 volatile u32 widclip;
138 volatile u32 vclipmin;
139 volatile u32 vclipmax;
140 volatile u32 pickmin; /* SS1 only */
141 volatile u32 pickmax; /* SS1 only */
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) */
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 */
155 volatile u32 planemask;
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 */
170 #define LEO_SS1_MISC_ENABLE 0x00000001
171 #define LEO_SS1_MISC_STEREO 0x00000002
174 volatile u32 ss1_misc;
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;
192 #define LEO_FLAG_BLANKED 0x00000001
194 unsigned long physbase;
195 unsigned long fbsize;
197 struct sbus_dev *sdev;
198 struct list_head list;
201 static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
206 (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && i < 300000;
208 udelay (1); /* Busy wait at most 0.3 sec */
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
221 static int leo_setcolreg(unsigned regno,
222 unsigned red, unsigned green, unsigned blue,
223 unsigned transp, struct fb_info *info)
225 struct leo_par *par = (struct leo_par *) info->par;
226 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
238 par->clut_data[regno] = red | (green << 8) | (blue << 16);
240 spin_lock_irqsave(&par->lock, flags);
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);
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);
253 spin_unlock_irqrestore(&par->lock, flags);
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
263 static int leo_blank(int blank, struct fb_info *info)
265 struct leo_par *par = (struct leo_par *) info->par;
266 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
270 spin_lock_irqsave(&par->lock, flags);
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;
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;
291 spin_unlock_irqrestore(&par->lock, flags);
296 static struct sbus_mmap_map leo_mmap_map[] = {
303 .voff = LEO_LC_SS0_USR_MAP,
304 .poff = LEO_OFF_LC_SS0_USR,
308 .voff = LEO_LD_SS0_MAP,
309 .poff = LEO_OFF_LD_SS0,
313 .voff = LEO_LX_CURSOR_MAP,
314 .poff = LEO_OFF_LX_CURSOR,
323 .voff = LEO_LC_SS1_USR_MAP,
324 .poff = LEO_OFF_LC_SS1_USR,
328 .voff = LEO_LD_SS1_MAP,
329 .poff = LEO_OFF_LD_SS1,
338 .voff = LEO_LX_KRN_MAP,
339 .poff = LEO_OFF_LX_KRN,
343 .voff = LEO_LC_SS0_KRN_MAP,
344 .poff = LEO_OFF_LC_SS0_KRN,
348 .voff = LEO_LC_SS1_KRN_MAP,
349 .poff = LEO_OFF_LC_SS1_KRN,
353 .voff = LEO_LD_GBL_MAP,
354 .poff = LEO_OFF_LD_GBL,
358 .voff = LEO_UNK2_MAP,
359 .poff = LEO_OFF_UNK2,
365 static int leo_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
367 struct leo_par *par = (struct leo_par *)info->par;
369 return sbusfb_mmap_helper(leo_mmap_map,
370 par->physbase, par->fbsize,
371 par->sdev->reg_addrs[0].which_io,
375 static int leo_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
376 unsigned long arg, struct fb_info *info)
378 struct leo_par *par = (struct leo_par *) info->par;
380 return sbusfb_ioctl_helper(cmd, arg, info,
381 FBTYPE_SUNLEO, 32, par->fbsize);
389 leo_init_fix(struct fb_info *info)
391 struct leo_par *par = (struct leo_par *)info->par;
393 strlcpy(info->fix.id, par->sdev->prom_name, sizeof(info->fix.id));
395 info->fix.type = FB_TYPE_PACKED_PIXELS;
396 info->fix.visual = FB_VISUAL_TRUECOLOR;
398 info->fix.line_length = 8192;
400 info->fix.accel = FB_ACCEL_SUN_LEO;
403 static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
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;
412 spin_lock_irqsave(&par->lock, flags);
416 for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
417 switch(wi->wi_type) {
419 j = (wi->wi_index & 0xf) + 0x40;
423 j = wi->wi_index & 0x3f;
429 sbus_writel(0x5800 + j, &lx_krn->krn_type);
430 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
432 sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
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);
438 spin_unlock_irqrestore(&par->lock, flags);
441 static void leo_init_wids(struct fb_info *info)
443 struct fb_wid_item wi;
444 struct fb_wid_list wl;
448 wi.wi_type = FB_WID_DBL_8;
450 wi.wi_values [0] = 0x2c0;
451 leo_wid_put(info, &wl);
453 wi.wi_values [0] = 0x30;
454 leo_wid_put(info, &wl);
456 wi.wi_values [0] = 0x20;
457 leo_wid_put(info, &wl);
458 wi.wi_type = FB_WID_DBL_24;
460 wi.wi_values [0] = 0x30;
461 leo_wid_put(info, &wl);
465 static void leo_switch_from_graph(struct fb_info *info)
467 struct leo_par *par = (struct leo_par *) info->par;
468 struct leo_ld __iomem *ss = (struct leo_ld __iomem *) par->ld_ss0;
472 spin_lock_irqsave(&par->lock, flags);
474 par->extent = ((info->var.xres - 1) |
475 ((info->var.yres - 1) << 16));
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);
491 val = sbus_readl(&par->lc_ss0_usr->csr);
492 } while (val & 0x20000000);
494 spin_unlock_irqrestore(&par->lock, flags);
497 static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
499 /* We just use this to catch switches out of
502 leo_switch_from_graph(info);
504 if (var->xoffset || var->yoffset || var->vmode)
509 static void leo_init_hw(struct fb_info *info)
511 struct leo_par *par = (struct leo_par *) info->par;
514 val = sbus_readl(&par->ld_ss1->ss1_misc);
515 val |= LEO_SS1_MISC_ENABLE;
516 sbus_writel(val, &par->ld_ss1->ss1_misc);
518 leo_switch_from_graph(info);
521 static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
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;
536 struct list_head list;
538 static LIST_HEAD(leo_list);
540 static void leo_init_one(struct sbus_dev *sdev)
542 struct all_info *all;
545 all = kmalloc(sizeof(*all), GFP_KERNEL);
547 printk(KERN_ERR "leo: Cannot allocate memory.\n");
550 memset(all, 0, sizeof(*all));
552 INIT_LIST_HEAD(&all->list);
554 spin_lock_init(&all->par.lock);
555 all->par.sdev = sdev;
557 all->par.physbase = sdev->reg_addrs[0].phys_addr;
559 sbusfb_fill_var(&all->info.var, sdev->prom_node, 32);
560 leo_fixup_var_rgb(&all->info.var);
562 linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
564 all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
566 #ifdef CONFIG_SPARC32
567 all->info.screen_base = (char __iomem *)
568 prom_getintdefault(sdev->prom_node, "address", 0);
570 if (!all->info.screen_base)
571 all->info.screen_base =
572 sbus_ioremap(&sdev->resource[0], LEO_OFF_SS0,
573 0x800000, "leo ram");
575 all->par.lc_ss0_usr =
576 sbus_ioremap(&sdev->resource[0], LEO_OFF_LC_SS0_USR,
577 0x1000, "leolc ss0usr");
579 sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS0,
580 0x1000, "leold ss0");
582 sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS1,
583 0x1000, "leold ss1");
585 sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_KRN,
586 0x1000, "leolx krn");
588 sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_CURSOR,
589 sizeof(struct leo_cursor), "leolx cursor");
591 all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
592 all->info.fbops = &leo_ops;
593 all->info.par = &all->par;
595 leo_init_wids(&all->info);
596 leo_init_hw(&all->info);
598 leo_blank(0, &all->info);
600 if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
601 printk(KERN_ERR "leo: Could not allocate color map.\n");
606 leo_init_fix(&all->info);
608 if (register_framebuffer(&all->info) < 0) {
609 printk(KERN_ERR "leo: Could not register framebuffer.\n");
610 fb_dealloc_cmap(&all->info.cmap);
615 list_add(&all->list, &leo_list);
617 printk("leo: %s at %lx:%lx\n",
619 (long) sdev->reg_addrs[0].which_io,
620 (long) sdev->reg_addrs[0].phys_addr);
623 int __init leo_init(void)
625 struct sbus_bus *sbus;
626 struct sbus_dev *sdev;
628 if (fb_get_options("leofb", NULL))
631 for_all_sbusdev(sdev, sbus) {
632 if (!strcmp(sdev->prom_name, "leo"))
639 void __exit leo_exit(void)
641 struct list_head *pos, *tmp;
643 list_for_each_safe(pos, tmp, &leo_list) {
644 struct all_info *all = list_entry(pos, typeof(*all), list);
646 unregister_framebuffer(&all->info);
647 fb_dealloc_cmap(&all->info.cmap);
655 /* No cmdline options yet... */
659 module_init(leo_init);
661 module_exit(leo_exit);
664 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
665 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
666 MODULE_LICENSE("GPL");