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 vm_area_struct *);
36 static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
37 static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
40 * Frame buffer operations
43 static struct fb_ops leo_ops = {
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,
52 .fb_ioctl = leo_ioctl,
54 .fb_compat_ioctl = sbusfb_compat_ioctl,
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
72 #define LEO_CUR_ENABLE 0x00000080
73 #define LEO_CUR_UPDATE 0x00000030
74 #define LEO_CUR_PROGRESS 0x00000006
75 #define LEO_CUR_UPDATECMAP 0x00000003
77 #define LEO_CUR_TYPE_MASK 0x00000000
78 #define LEO_CUR_TYPE_IMAGE 0x00000020
79 #define LEO_CUR_TYPE_CMAP 0x00000050
83 volatile u32 cur_type;
84 volatile u32 cur_misc;
85 volatile u32 cur_cursxy;
86 volatile u32 cur_data;
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
102 volatile u32 krn_type;
103 volatile u32 krn_csr;
104 volatile u32 krn_value;
107 struct leo_lc_ss0_krn {
113 struct leo_lc_ss0_usr {
115 volatile u32 addrspace;
116 volatile u32 fontmsk;
125 struct leo_lc_ss1_krn {
129 struct leo_lc_ss1_usr {
138 volatile u32 widclip;
139 volatile u32 vclipmin;
140 volatile u32 vclipmax;
141 volatile u32 pickmin; /* SS1 only */
142 volatile u32 pickmax; /* SS1 only */
145 volatile u32 src; /* Copy/Scroll (SS0 only) */
146 volatile u32 dst; /* Copy/Scroll/Fill (SS0 only) */
147 volatile u32 extent; /* Copy/Scroll/Fill size (SS0 only) */
149 volatile u32 setsem; /* SS1 only */
150 volatile u32 clrsem; /* SS1 only */
151 volatile u32 clrpick; /* SS1 only */
152 volatile u32 clrdat; /* SS1 only */
153 volatile u32 alpha; /* SS1 only */
156 volatile u32 planemask;
159 volatile u32 dczf; /* SS1 only */
160 volatile u32 dczb; /* SS1 only */
161 volatile u32 dcs; /* SS1 only */
162 volatile u32 dczs; /* SS1 only */
163 volatile u32 pickfb; /* SS1 only */
164 volatile u32 pickbb; /* SS1 only */
165 volatile u32 dcfc; /* SS1 only */
166 volatile u32 forcecol; /* SS1 only */
167 volatile u32 door[8]; /* SS1 only */
168 volatile u32 pick[5]; /* SS1 only */
171 #define LEO_SS1_MISC_ENABLE 0x00000001
172 #define LEO_SS1_MISC_STEREO 0x00000002
175 volatile u32 ss1_misc;
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;
193 #define LEO_FLAG_BLANKED 0x00000001
195 unsigned long physbase;
196 unsigned long fbsize;
198 struct sbus_dev *sdev;
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 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 fb_info *info, unsigned int cmd, unsigned long arg)
377 struct leo_par *par = (struct leo_par *) info->par;
379 return sbusfb_ioctl_helper(cmd, arg, info,
380 FBTYPE_SUNLEO, 32, par->fbsize);
388 leo_init_fix(struct fb_info *info)
390 struct leo_par *par = (struct leo_par *)info->par;
392 strlcpy(info->fix.id, par->sdev->prom_name, sizeof(info->fix.id));
394 info->fix.type = FB_TYPE_PACKED_PIXELS;
395 info->fix.visual = FB_VISUAL_TRUECOLOR;
397 info->fix.line_length = 8192;
399 info->fix.accel = FB_ACCEL_SUN_LEO;
402 static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
404 struct leo_par *par = (struct leo_par *) info->par;
405 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
406 struct fb_wid_item *wi;
411 spin_lock_irqsave(&par->lock, flags);
415 for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
416 switch(wi->wi_type) {
418 j = (wi->wi_index & 0xf) + 0x40;
422 j = wi->wi_index & 0x3f;
428 sbus_writel(0x5800 + j, &lx_krn->krn_type);
429 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
431 sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
433 val = sbus_readl(&lx_krn->krn_csr);
434 val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
435 sbus_writel(val, &lx_krn->krn_csr);
437 spin_unlock_irqrestore(&par->lock, flags);
440 static void leo_init_wids(struct fb_info *info)
442 struct fb_wid_item wi;
443 struct fb_wid_list wl;
447 wi.wi_type = FB_WID_DBL_8;
449 wi.wi_values [0] = 0x2c0;
450 leo_wid_put(info, &wl);
452 wi.wi_values [0] = 0x30;
453 leo_wid_put(info, &wl);
455 wi.wi_values [0] = 0x20;
456 leo_wid_put(info, &wl);
457 wi.wi_type = FB_WID_DBL_24;
459 wi.wi_values [0] = 0x30;
460 leo_wid_put(info, &wl);
464 static void leo_switch_from_graph(struct fb_info *info)
466 struct leo_par *par = (struct leo_par *) info->par;
467 struct leo_ld __iomem *ss = (struct leo_ld __iomem *) par->ld_ss0;
471 spin_lock_irqsave(&par->lock, flags);
473 par->extent = ((info->var.xres - 1) |
474 ((info->var.yres - 1) << 16));
476 sbus_writel(0xffffffff, &ss->wid);
477 sbus_writel(0xffff, &ss->wmask);
478 sbus_writel(0, &ss->vclipmin);
479 sbus_writel(par->extent, &ss->vclipmax);
480 sbus_writel(0, &ss->fg);
481 sbus_writel(0xff000000, &ss->planemask);
482 sbus_writel(0x310850, &ss->rop);
483 sbus_writel(0, &ss->widclip);
484 sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
485 &par->lc_ss0_usr->extent);
486 sbus_writel(4, &par->lc_ss0_usr->addrspace);
487 sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
488 sbus_writel(0, &par->lc_ss0_usr->fontt);
490 val = sbus_readl(&par->lc_ss0_usr->csr);
491 } while (val & 0x20000000);
493 spin_unlock_irqrestore(&par->lock, flags);
496 static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
498 /* We just use this to catch switches out of
501 leo_switch_from_graph(info);
503 if (var->xoffset || var->yoffset || var->vmode)
508 static void leo_init_hw(struct fb_info *info)
510 struct leo_par *par = (struct leo_par *) info->par;
513 val = sbus_readl(&par->ld_ss1->ss1_misc);
514 val |= LEO_SS1_MISC_ENABLE;
515 sbus_writel(val, &par->ld_ss1->ss1_misc);
517 leo_switch_from_graph(info);
520 static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
524 var->green.offset = 8;
525 var->green.length = 8;
526 var->blue.offset = 16;
527 var->blue.length = 8;
528 var->transp.offset = 0;
529 var->transp.length = 0;
535 struct list_head list;
537 static LIST_HEAD(leo_list);
539 static void leo_init_one(struct sbus_dev *sdev)
541 struct all_info *all;
544 all = kmalloc(sizeof(*all), GFP_KERNEL);
546 printk(KERN_ERR "leo: Cannot allocate memory.\n");
549 memset(all, 0, sizeof(*all));
551 INIT_LIST_HEAD(&all->list);
553 spin_lock_init(&all->par.lock);
554 all->par.sdev = sdev;
556 all->par.physbase = sdev->reg_addrs[0].phys_addr;
558 sbusfb_fill_var(&all->info.var, sdev->prom_node, 32);
559 leo_fixup_var_rgb(&all->info.var);
561 linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
563 all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
565 #ifdef CONFIG_SPARC32
566 all->info.screen_base = (char __iomem *)
567 prom_getintdefault(sdev->prom_node, "address", 0);
569 if (!all->info.screen_base)
570 all->info.screen_base =
571 sbus_ioremap(&sdev->resource[0], LEO_OFF_SS0,
572 0x800000, "leo ram");
574 all->par.lc_ss0_usr =
575 sbus_ioremap(&sdev->resource[0], LEO_OFF_LC_SS0_USR,
576 0x1000, "leolc ss0usr");
578 sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS0,
579 0x1000, "leold ss0");
581 sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS1,
582 0x1000, "leold ss1");
584 sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_KRN,
585 0x1000, "leolx krn");
587 sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_CURSOR,
588 sizeof(struct leo_cursor), "leolx cursor");
590 all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
591 all->info.fbops = &leo_ops;
592 all->info.par = &all->par;
594 leo_init_wids(&all->info);
595 leo_init_hw(&all->info);
597 leo_blank(0, &all->info);
599 if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
600 printk(KERN_ERR "leo: Could not allocate color map.\n");
605 leo_init_fix(&all->info);
607 if (register_framebuffer(&all->info) < 0) {
608 printk(KERN_ERR "leo: Could not register framebuffer.\n");
609 fb_dealloc_cmap(&all->info.cmap);
614 list_add(&all->list, &leo_list);
616 printk("leo: %s at %lx:%lx\n",
618 (long) sdev->reg_addrs[0].which_io,
619 (long) sdev->reg_addrs[0].phys_addr);
622 int __init leo_init(void)
624 struct sbus_bus *sbus;
625 struct sbus_dev *sdev;
627 if (fb_get_options("leofb", NULL))
630 for_all_sbusdev(sdev, sbus) {
631 if (!strcmp(sdev->prom_name, "leo"))
638 void __exit leo_exit(void)
640 struct list_head *pos, *tmp;
642 list_for_each_safe(pos, tmp, &leo_list) {
643 struct all_info *all = list_entry(pos, typeof(*all), list);
645 unregister_framebuffer(&all->info);
646 fb_dealloc_cmap(&all->info.cmap);
654 /* No cmdline options yet... */
658 module_init(leo_init);
660 module_exit(leo_exit);
663 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
664 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
665 MODULE_LICENSE("GPL");