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
,
55 .fb_compat_ioctl
= sbusfb_compat_ioctl
,
59 #define LEO_OFF_LC_SS0_KRN 0x00200000UL
60 #define LEO_OFF_LC_SS0_USR 0x00201000UL
61 #define LEO_OFF_LC_SS1_KRN 0x01200000UL
62 #define LEO_OFF_LC_SS1_USR 0x01201000UL
63 #define LEO_OFF_LD_SS0 0x00400000UL
64 #define LEO_OFF_LD_SS1 0x01400000UL
65 #define LEO_OFF_LD_GBL 0x00401000UL
66 #define LEO_OFF_LX_KRN 0x00600000UL
67 #define LEO_OFF_LX_CURSOR 0x00601000UL
68 #define LEO_OFF_SS0 0x00800000UL
69 #define LEO_OFF_SS1 0x01800000UL
70 #define LEO_OFF_UNK 0x00602000UL
71 #define LEO_OFF_UNK2 0x00000000UL
73 #define LEO_CUR_ENABLE 0x00000080
74 #define LEO_CUR_UPDATE 0x00000030
75 #define LEO_CUR_PROGRESS 0x00000006
76 #define LEO_CUR_UPDATECMAP 0x00000003
78 #define LEO_CUR_TYPE_MASK 0x00000000
79 #define LEO_CUR_TYPE_IMAGE 0x00000020
80 #define LEO_CUR_TYPE_CMAP 0x00000050
84 volatile u32 cur_type
;
85 volatile u32 cur_misc
;
86 volatile u32 cur_cursxy
;
87 volatile u32 cur_data
;
90 #define LEO_KRN_TYPE_CLUT0 0x00001000
91 #define LEO_KRN_TYPE_CLUT1 0x00001001
92 #define LEO_KRN_TYPE_CLUT2 0x00001002
93 #define LEO_KRN_TYPE_WID 0x00001003
94 #define LEO_KRN_TYPE_UNK 0x00001006
95 #define LEO_KRN_TYPE_VIDEO 0x00002003
96 #define LEO_KRN_TYPE_CLUTDATA 0x00004000
97 #define LEO_KRN_CSR_ENABLE 0x00000008
98 #define LEO_KRN_CSR_PROGRESS 0x00000004
99 #define LEO_KRN_CSR_UNK 0x00000002
100 #define LEO_KRN_CSR_UNK2 0x00000001
103 volatile u32 krn_type
;
104 volatile u32 krn_csr
;
105 volatile u32 krn_value
;
108 struct leo_lc_ss0_krn
{
114 struct leo_lc_ss0_usr
{
116 volatile u32 addrspace
;
117 volatile u32 fontmsk
;
126 struct leo_lc_ss1_krn
{
130 struct leo_lc_ss1_usr
{
139 volatile u32 widclip
;
140 volatile u32 vclipmin
;
141 volatile u32 vclipmax
;
142 volatile u32 pickmin
; /* SS1 only */
143 volatile u32 pickmax
; /* SS1 only */
146 volatile u32 src
; /* Copy/Scroll (SS0 only) */
147 volatile u32 dst
; /* Copy/Scroll/Fill (SS0 only) */
148 volatile u32 extent
; /* Copy/Scroll/Fill size (SS0 only) */
150 volatile u32 setsem
; /* SS1 only */
151 volatile u32 clrsem
; /* SS1 only */
152 volatile u32 clrpick
; /* SS1 only */
153 volatile u32 clrdat
; /* SS1 only */
154 volatile u32 alpha
; /* SS1 only */
157 volatile u32 planemask
;
160 volatile u32 dczf
; /* SS1 only */
161 volatile u32 dczb
; /* SS1 only */
162 volatile u32 dcs
; /* SS1 only */
163 volatile u32 dczs
; /* SS1 only */
164 volatile u32 pickfb
; /* SS1 only */
165 volatile u32 pickbb
; /* SS1 only */
166 volatile u32 dcfc
; /* SS1 only */
167 volatile u32 forcecol
; /* SS1 only */
168 volatile u32 door
[8]; /* SS1 only */
169 volatile u32 pick
[5]; /* SS1 only */
172 #define LEO_SS1_MISC_ENABLE 0x00000001
173 #define LEO_SS1_MISC_STEREO 0x00000002
176 volatile u32 ss1_misc
;
185 struct leo_lx_krn __iomem
*lx_krn
;
186 struct leo_lc_ss0_usr __iomem
*lc_ss0_usr
;
187 struct leo_ld_ss0 __iomem
*ld_ss0
;
188 struct leo_ld_ss1 __iomem
*ld_ss1
;
189 struct leo_cursor __iomem
*cursor
;
194 #define LEO_FLAG_BLANKED 0x00000001
196 unsigned long physbase
;
197 unsigned long fbsize
;
199 struct sbus_dev
*sdev
;
202 static void leo_wait(struct leo_lx_krn __iomem
*lx_krn
)
207 (sbus_readl(&lx_krn
->krn_csr
) & LEO_KRN_CSR_PROGRESS
) && i
< 300000;
209 udelay (1); /* Busy wait at most 0.3 sec */
214 * leo_setcolreg - Optional function. Sets a color register.
215 * @regno: boolean, 0 copy local, 1 get_user() function
216 * @red: frame buffer colormap structure
217 * @green: The green value which can be up to 16 bits wide
218 * @blue: The blue value which can be up to 16 bits wide.
219 * @transp: If supported the alpha value which can be up to 16 bits wide.
220 * @info: frame buffer info structure
222 static int leo_setcolreg(unsigned regno
,
223 unsigned red
, unsigned green
, unsigned blue
,
224 unsigned transp
, struct fb_info
*info
)
226 struct leo_par
*par
= (struct leo_par
*) info
->par
;
227 struct leo_lx_krn __iomem
*lx_krn
= par
->lx_krn
;
239 par
->clut_data
[regno
] = red
| (green
<< 8) | (blue
<< 16);
241 spin_lock_irqsave(&par
->lock
, flags
);
245 sbus_writel(LEO_KRN_TYPE_CLUTDATA
, &lx_krn
->krn_type
);
246 for (i
= 0; i
< 256; i
++)
247 sbus_writel(par
->clut_data
[i
], &lx_krn
->krn_value
);
248 sbus_writel(LEO_KRN_TYPE_CLUT0
, &lx_krn
->krn_type
);
250 val
= sbus_readl(&lx_krn
->krn_csr
);
251 val
|= (LEO_KRN_CSR_UNK
| LEO_KRN_CSR_UNK2
);
252 sbus_writel(val
, &lx_krn
->krn_csr
);
254 spin_unlock_irqrestore(&par
->lock
, flags
);
260 * leo_blank - Optional function. Blanks the display.
261 * @blank_mode: the blank mode we want.
262 * @info: frame buffer structure that represents a single frame buffer
264 static int leo_blank(int blank
, struct fb_info
*info
)
266 struct leo_par
*par
= (struct leo_par
*) info
->par
;
267 struct leo_lx_krn __iomem
*lx_krn
= par
->lx_krn
;
271 spin_lock_irqsave(&par
->lock
, flags
);
274 case FB_BLANK_UNBLANK
: /* Unblanking */
275 val
= sbus_readl(&lx_krn
->krn_csr
);
276 val
|= LEO_KRN_CSR_ENABLE
;
277 sbus_writel(val
, &lx_krn
->krn_csr
);
278 par
->flags
&= ~LEO_FLAG_BLANKED
;
281 case FB_BLANK_NORMAL
: /* Normal blanking */
282 case FB_BLANK_VSYNC_SUSPEND
: /* VESA blank (vsync off) */
283 case FB_BLANK_HSYNC_SUSPEND
: /* VESA blank (hsync off) */
284 case FB_BLANK_POWERDOWN
: /* Poweroff */
285 val
= sbus_readl(&lx_krn
->krn_csr
);
286 val
&= ~LEO_KRN_CSR_ENABLE
;
287 sbus_writel(val
, &lx_krn
->krn_csr
);
288 par
->flags
|= LEO_FLAG_BLANKED
;
292 spin_unlock_irqrestore(&par
->lock
, flags
);
297 static struct sbus_mmap_map leo_mmap_map
[] = {
304 .voff
= LEO_LC_SS0_USR_MAP
,
305 .poff
= LEO_OFF_LC_SS0_USR
,
309 .voff
= LEO_LD_SS0_MAP
,
310 .poff
= LEO_OFF_LD_SS0
,
314 .voff
= LEO_LX_CURSOR_MAP
,
315 .poff
= LEO_OFF_LX_CURSOR
,
324 .voff
= LEO_LC_SS1_USR_MAP
,
325 .poff
= LEO_OFF_LC_SS1_USR
,
329 .voff
= LEO_LD_SS1_MAP
,
330 .poff
= LEO_OFF_LD_SS1
,
339 .voff
= LEO_LX_KRN_MAP
,
340 .poff
= LEO_OFF_LX_KRN
,
344 .voff
= LEO_LC_SS0_KRN_MAP
,
345 .poff
= LEO_OFF_LC_SS0_KRN
,
349 .voff
= LEO_LC_SS1_KRN_MAP
,
350 .poff
= LEO_OFF_LC_SS1_KRN
,
354 .voff
= LEO_LD_GBL_MAP
,
355 .poff
= LEO_OFF_LD_GBL
,
359 .voff
= LEO_UNK2_MAP
,
360 .poff
= LEO_OFF_UNK2
,
366 static int leo_mmap(struct fb_info
*info
, struct file
*file
, struct vm_area_struct
*vma
)
368 struct leo_par
*par
= (struct leo_par
*)info
->par
;
370 return sbusfb_mmap_helper(leo_mmap_map
,
371 par
->physbase
, par
->fbsize
,
372 par
->sdev
->reg_addrs
[0].which_io
,
376 static int leo_ioctl(struct inode
*inode
, struct file
*file
, unsigned int cmd
,
377 unsigned long arg
, struct fb_info
*info
)
379 struct leo_par
*par
= (struct leo_par
*) info
->par
;
381 return sbusfb_ioctl_helper(cmd
, arg
, info
,
382 FBTYPE_SUNLEO
, 32, par
->fbsize
);
390 leo_init_fix(struct fb_info
*info
)
392 struct leo_par
*par
= (struct leo_par
*)info
->par
;
394 strlcpy(info
->fix
.id
, par
->sdev
->prom_name
, sizeof(info
->fix
.id
));
396 info
->fix
.type
= FB_TYPE_PACKED_PIXELS
;
397 info
->fix
.visual
= FB_VISUAL_TRUECOLOR
;
399 info
->fix
.line_length
= 8192;
401 info
->fix
.accel
= FB_ACCEL_SUN_LEO
;
404 static void leo_wid_put(struct fb_info
*info
, struct fb_wid_list
*wl
)
406 struct leo_par
*par
= (struct leo_par
*) info
->par
;
407 struct leo_lx_krn __iomem
*lx_krn
= par
->lx_krn
;
408 struct fb_wid_item
*wi
;
413 spin_lock_irqsave(&par
->lock
, flags
);
417 for (i
= 0, wi
= wl
->wl_list
; i
< wl
->wl_count
; i
++, wi
++) {
418 switch(wi
->wi_type
) {
420 j
= (wi
->wi_index
& 0xf) + 0x40;
424 j
= wi
->wi_index
& 0x3f;
430 sbus_writel(0x5800 + j
, &lx_krn
->krn_type
);
431 sbus_writel(wi
->wi_values
[0], &lx_krn
->krn_value
);
433 sbus_writel(LEO_KRN_TYPE_WID
, &lx_krn
->krn_type
);
435 val
= sbus_readl(&lx_krn
->krn_csr
);
436 val
|= (LEO_KRN_CSR_UNK
| LEO_KRN_CSR_UNK2
);
437 sbus_writel(val
, &lx_krn
->krn_csr
);
439 spin_unlock_irqrestore(&par
->lock
, flags
);
442 static void leo_init_wids(struct fb_info
*info
)
444 struct fb_wid_item wi
;
445 struct fb_wid_list wl
;
449 wi
.wi_type
= FB_WID_DBL_8
;
451 wi
.wi_values
[0] = 0x2c0;
452 leo_wid_put(info
, &wl
);
454 wi
.wi_values
[0] = 0x30;
455 leo_wid_put(info
, &wl
);
457 wi
.wi_values
[0] = 0x20;
458 leo_wid_put(info
, &wl
);
459 wi
.wi_type
= FB_WID_DBL_24
;
461 wi
.wi_values
[0] = 0x30;
462 leo_wid_put(info
, &wl
);
466 static void leo_switch_from_graph(struct fb_info
*info
)
468 struct leo_par
*par
= (struct leo_par
*) info
->par
;
469 struct leo_ld __iomem
*ss
= (struct leo_ld __iomem
*) par
->ld_ss0
;
473 spin_lock_irqsave(&par
->lock
, flags
);
475 par
->extent
= ((info
->var
.xres
- 1) |
476 ((info
->var
.yres
- 1) << 16));
478 sbus_writel(0xffffffff, &ss
->wid
);
479 sbus_writel(0xffff, &ss
->wmask
);
480 sbus_writel(0, &ss
->vclipmin
);
481 sbus_writel(par
->extent
, &ss
->vclipmax
);
482 sbus_writel(0, &ss
->fg
);
483 sbus_writel(0xff000000, &ss
->planemask
);
484 sbus_writel(0x310850, &ss
->rop
);
485 sbus_writel(0, &ss
->widclip
);
486 sbus_writel((info
->var
.xres
-1) | ((info
->var
.yres
-1) << 11),
487 &par
->lc_ss0_usr
->extent
);
488 sbus_writel(4, &par
->lc_ss0_usr
->addrspace
);
489 sbus_writel(0x80000000, &par
->lc_ss0_usr
->fill
);
490 sbus_writel(0, &par
->lc_ss0_usr
->fontt
);
492 val
= sbus_readl(&par
->lc_ss0_usr
->csr
);
493 } while (val
& 0x20000000);
495 spin_unlock_irqrestore(&par
->lock
, flags
);
498 static int leo_pan_display(struct fb_var_screeninfo
*var
, struct fb_info
*info
)
500 /* We just use this to catch switches out of
503 leo_switch_from_graph(info
);
505 if (var
->xoffset
|| var
->yoffset
|| var
->vmode
)
510 static void leo_init_hw(struct fb_info
*info
)
512 struct leo_par
*par
= (struct leo_par
*) info
->par
;
515 val
= sbus_readl(&par
->ld_ss1
->ss1_misc
);
516 val
|= LEO_SS1_MISC_ENABLE
;
517 sbus_writel(val
, &par
->ld_ss1
->ss1_misc
);
519 leo_switch_from_graph(info
);
522 static void leo_fixup_var_rgb(struct fb_var_screeninfo
*var
)
526 var
->green
.offset
= 8;
527 var
->green
.length
= 8;
528 var
->blue
.offset
= 16;
529 var
->blue
.length
= 8;
530 var
->transp
.offset
= 0;
531 var
->transp
.length
= 0;
537 struct list_head list
;
539 static LIST_HEAD(leo_list
);
541 static void leo_init_one(struct sbus_dev
*sdev
)
543 struct all_info
*all
;
546 all
= kmalloc(sizeof(*all
), GFP_KERNEL
);
548 printk(KERN_ERR
"leo: Cannot allocate memory.\n");
551 memset(all
, 0, sizeof(*all
));
553 INIT_LIST_HEAD(&all
->list
);
555 spin_lock_init(&all
->par
.lock
);
556 all
->par
.sdev
= sdev
;
558 all
->par
.physbase
= sdev
->reg_addrs
[0].phys_addr
;
560 sbusfb_fill_var(&all
->info
.var
, sdev
->prom_node
, 32);
561 leo_fixup_var_rgb(&all
->info
.var
);
563 linebytes
= prom_getintdefault(sdev
->prom_node
, "linebytes",
565 all
->par
.fbsize
= PAGE_ALIGN(linebytes
* all
->info
.var
.yres
);
567 #ifdef CONFIG_SPARC32
568 all
->info
.screen_base
= (char __iomem
*)
569 prom_getintdefault(sdev
->prom_node
, "address", 0);
571 if (!all
->info
.screen_base
)
572 all
->info
.screen_base
=
573 sbus_ioremap(&sdev
->resource
[0], LEO_OFF_SS0
,
574 0x800000, "leo ram");
576 all
->par
.lc_ss0_usr
=
577 sbus_ioremap(&sdev
->resource
[0], LEO_OFF_LC_SS0_USR
,
578 0x1000, "leolc ss0usr");
580 sbus_ioremap(&sdev
->resource
[0], LEO_OFF_LD_SS0
,
581 0x1000, "leold ss0");
583 sbus_ioremap(&sdev
->resource
[0], LEO_OFF_LD_SS1
,
584 0x1000, "leold ss1");
586 sbus_ioremap(&sdev
->resource
[0], LEO_OFF_LX_KRN
,
587 0x1000, "leolx krn");
589 sbus_ioremap(&sdev
->resource
[0], LEO_OFF_LX_CURSOR
,
590 sizeof(struct leo_cursor
), "leolx cursor");
592 all
->info
.flags
= FBINFO_DEFAULT
| FBINFO_HWACCEL_YPAN
;
593 all
->info
.fbops
= &leo_ops
;
594 all
->info
.par
= &all
->par
;
596 leo_init_wids(&all
->info
);
597 leo_init_hw(&all
->info
);
599 leo_blank(0, &all
->info
);
601 if (fb_alloc_cmap(&all
->info
.cmap
, 256, 0)) {
602 printk(KERN_ERR
"leo: Could not allocate color map.\n");
607 leo_init_fix(&all
->info
);
609 if (register_framebuffer(&all
->info
) < 0) {
610 printk(KERN_ERR
"leo: Could not register framebuffer.\n");
611 fb_dealloc_cmap(&all
->info
.cmap
);
616 list_add(&all
->list
, &leo_list
);
618 printk("leo: %s at %lx:%lx\n",
620 (long) sdev
->reg_addrs
[0].which_io
,
621 (long) sdev
->reg_addrs
[0].phys_addr
);
624 int __init
leo_init(void)
626 struct sbus_bus
*sbus
;
627 struct sbus_dev
*sdev
;
629 if (fb_get_options("leofb", NULL
))
632 for_all_sbusdev(sdev
, sbus
) {
633 if (!strcmp(sdev
->prom_name
, "leo"))
640 void __exit
leo_exit(void)
642 struct list_head
*pos
, *tmp
;
644 list_for_each_safe(pos
, tmp
, &leo_list
) {
645 struct all_info
*all
= list_entry(pos
, typeof(*all
), list
);
647 unregister_framebuffer(&all
->info
);
648 fb_dealloc_cmap(&all
->info
.cmap
);
656 /* No cmdline options yet... */
660 module_init(leo_init
);
662 module_exit(leo_exit
);
665 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
666 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
667 MODULE_LICENSE("GPL");