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OpenCloudOS-Kernel/drivers/video/leo.c

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/* leo.c: LEO frame buffer driver
*
* Copyright (C) 2003 David S. Miller (davem@redhat.com)
* Copyright (C) 1996-1999 Jakub Jelinek (jj@ultra.linux.cz)
* Copyright (C) 1997 Michal Rehacek (Michal.Rehacek@st.mff.cuni.cz)
*
* Driver layout based loosely on tgafb.c, see that file for credits.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/fb.h>
#include <linux/mm.h>
#include <asm/io.h>
#include <asm/sbus.h>
#include <asm/oplib.h>
#include <asm/fbio.h>
#include "sbuslib.h"
/*
* Local functions.
*/
static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
unsigned, struct fb_info *);
static int leo_blank(int, struct fb_info *);
static int leo_mmap(struct fb_info *, struct vm_area_struct *);
static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
/*
* Frame buffer operations
*/
static struct fb_ops leo_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = leo_setcolreg,
.fb_blank = leo_blank,
.fb_pan_display = leo_pan_display,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_mmap = leo_mmap,
.fb_ioctl = leo_ioctl,
#ifdef CONFIG_COMPAT
.fb_compat_ioctl = sbusfb_compat_ioctl,
#endif
};
#define LEO_OFF_LC_SS0_KRN 0x00200000UL
#define LEO_OFF_LC_SS0_USR 0x00201000UL
#define LEO_OFF_LC_SS1_KRN 0x01200000UL
#define LEO_OFF_LC_SS1_USR 0x01201000UL
#define LEO_OFF_LD_SS0 0x00400000UL
#define LEO_OFF_LD_SS1 0x01400000UL
#define LEO_OFF_LD_GBL 0x00401000UL
#define LEO_OFF_LX_KRN 0x00600000UL
#define LEO_OFF_LX_CURSOR 0x00601000UL
#define LEO_OFF_SS0 0x00800000UL
#define LEO_OFF_SS1 0x01800000UL
#define LEO_OFF_UNK 0x00602000UL
#define LEO_OFF_UNK2 0x00000000UL
#define LEO_CUR_ENABLE 0x00000080
#define LEO_CUR_UPDATE 0x00000030
#define LEO_CUR_PROGRESS 0x00000006
#define LEO_CUR_UPDATECMAP 0x00000003
#define LEO_CUR_TYPE_MASK 0x00000000
#define LEO_CUR_TYPE_IMAGE 0x00000020
#define LEO_CUR_TYPE_CMAP 0x00000050
struct leo_cursor {
u8 xxx0[16];
volatile u32 cur_type;
volatile u32 cur_misc;
volatile u32 cur_cursxy;
volatile u32 cur_data;
};
#define LEO_KRN_TYPE_CLUT0 0x00001000
#define LEO_KRN_TYPE_CLUT1 0x00001001
#define LEO_KRN_TYPE_CLUT2 0x00001002
#define LEO_KRN_TYPE_WID 0x00001003
#define LEO_KRN_TYPE_UNK 0x00001006
#define LEO_KRN_TYPE_VIDEO 0x00002003
#define LEO_KRN_TYPE_CLUTDATA 0x00004000
#define LEO_KRN_CSR_ENABLE 0x00000008
#define LEO_KRN_CSR_PROGRESS 0x00000004
#define LEO_KRN_CSR_UNK 0x00000002
#define LEO_KRN_CSR_UNK2 0x00000001
struct leo_lx_krn {
volatile u32 krn_type;
volatile u32 krn_csr;
volatile u32 krn_value;
};
struct leo_lc_ss0_krn {
volatile u32 misc;
u8 xxx0[0x800-4];
volatile u32 rev;
};
struct leo_lc_ss0_usr {
volatile u32 csr;
volatile u32 addrspace;
volatile u32 fontmsk;
volatile u32 fontt;
volatile u32 extent;
volatile u32 src;
u32 dst;
volatile u32 copy;
volatile u32 fill;
};
struct leo_lc_ss1_krn {
u8 unknown;
};
struct leo_lc_ss1_usr {
u8 unknown;
};
struct leo_ld {
u8 xxx0[0xe00];
volatile u32 csr;
volatile u32 wid;
volatile u32 wmask;
volatile u32 widclip;
volatile u32 vclipmin;
volatile u32 vclipmax;
volatile u32 pickmin; /* SS1 only */
volatile u32 pickmax; /* SS1 only */
volatile u32 fg;
volatile u32 bg;
volatile u32 src; /* Copy/Scroll (SS0 only) */
volatile u32 dst; /* Copy/Scroll/Fill (SS0 only) */
volatile u32 extent; /* Copy/Scroll/Fill size (SS0 only) */
u32 xxx1[3];
volatile u32 setsem; /* SS1 only */
volatile u32 clrsem; /* SS1 only */
volatile u32 clrpick; /* SS1 only */
volatile u32 clrdat; /* SS1 only */
volatile u32 alpha; /* SS1 only */
u8 xxx2[0x2c];
volatile u32 winbg;
volatile u32 planemask;
volatile u32 rop;
volatile u32 z;
volatile u32 dczf; /* SS1 only */
volatile u32 dczb; /* SS1 only */
volatile u32 dcs; /* SS1 only */
volatile u32 dczs; /* SS1 only */
volatile u32 pickfb; /* SS1 only */
volatile u32 pickbb; /* SS1 only */
volatile u32 dcfc; /* SS1 only */
volatile u32 forcecol; /* SS1 only */
volatile u32 door[8]; /* SS1 only */
volatile u32 pick[5]; /* SS1 only */
};
#define LEO_SS1_MISC_ENABLE 0x00000001
#define LEO_SS1_MISC_STEREO 0x00000002
struct leo_ld_ss1 {
u8 xxx0[0xef4];
volatile u32 ss1_misc;
};
struct leo_ld_gbl {
u8 unknown;
};
struct leo_par {
spinlock_t lock;
struct leo_lx_krn __iomem *lx_krn;
struct leo_lc_ss0_usr __iomem *lc_ss0_usr;
struct leo_ld_ss0 __iomem *ld_ss0;
struct leo_ld_ss1 __iomem *ld_ss1;
struct leo_cursor __iomem *cursor;
u32 extent;
u32 clut_data[256];
u32 flags;
#define LEO_FLAG_BLANKED 0x00000001
unsigned long physbase;
unsigned long fbsize;
struct sbus_dev *sdev;
};
static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
{
int i;
for (i = 0;
(sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && i < 300000;
i++)
udelay (1); /* Busy wait at most 0.3 sec */
return;
}
/**
* leo_setcolreg - Optional function. Sets a color register.
* @regno: boolean, 0 copy local, 1 get_user() function
* @red: frame buffer colormap structure
* @green: The green value which can be up to 16 bits wide
* @blue: The blue value which can be up to 16 bits wide.
* @transp: If supported the alpha value which can be up to 16 bits wide.
* @info: frame buffer info structure
*/
static int leo_setcolreg(unsigned regno,
unsigned red, unsigned green, unsigned blue,
unsigned transp, struct fb_info *info)
{
struct leo_par *par = (struct leo_par *) info->par;
struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
unsigned long flags;
u32 val;
int i;
if (regno >= 256)
return 1;
red >>= 8;
green >>= 8;
blue >>= 8;
par->clut_data[regno] = red | (green << 8) | (blue << 16);
spin_lock_irqsave(&par->lock, flags);
leo_wait(lx_krn);
sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
for (i = 0; i < 256; i++)
sbus_writel(par->clut_data[i], &lx_krn->krn_value);
sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
val = sbus_readl(&lx_krn->krn_csr);
val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
sbus_writel(val, &lx_krn->krn_csr);
spin_unlock_irqrestore(&par->lock, flags);
return 0;
}
/**
* leo_blank - Optional function. Blanks the display.
* @blank_mode: the blank mode we want.
* @info: frame buffer structure that represents a single frame buffer
*/
static int leo_blank(int blank, struct fb_info *info)
{
struct leo_par *par = (struct leo_par *) info->par;
struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
unsigned long flags;
u32 val;
spin_lock_irqsave(&par->lock, flags);
switch (blank) {
case FB_BLANK_UNBLANK: /* Unblanking */
val = sbus_readl(&lx_krn->krn_csr);
val |= LEO_KRN_CSR_ENABLE;
sbus_writel(val, &lx_krn->krn_csr);
par->flags &= ~LEO_FLAG_BLANKED;
break;
case FB_BLANK_NORMAL: /* Normal blanking */
case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
case FB_BLANK_POWERDOWN: /* Poweroff */
val = sbus_readl(&lx_krn->krn_csr);
val &= ~LEO_KRN_CSR_ENABLE;
sbus_writel(val, &lx_krn->krn_csr);
par->flags |= LEO_FLAG_BLANKED;
break;
}
spin_unlock_irqrestore(&par->lock, flags);
return 0;
}
static struct sbus_mmap_map leo_mmap_map[] = {
{
.voff = LEO_SS0_MAP,
.poff = LEO_OFF_SS0,
.size = 0x800000
},
{
.voff = LEO_LC_SS0_USR_MAP,
.poff = LEO_OFF_LC_SS0_USR,
.size = 0x1000
},
{
.voff = LEO_LD_SS0_MAP,
.poff = LEO_OFF_LD_SS0,
.size = 0x1000
},
{
.voff = LEO_LX_CURSOR_MAP,
.poff = LEO_OFF_LX_CURSOR,
.size = 0x1000
},
{
.voff = LEO_SS1_MAP,
.poff = LEO_OFF_SS1,
.size = 0x800000
},
{
.voff = LEO_LC_SS1_USR_MAP,
.poff = LEO_OFF_LC_SS1_USR,
.size = 0x1000
},
{
.voff = LEO_LD_SS1_MAP,
.poff = LEO_OFF_LD_SS1,
.size = 0x1000
},
{
.voff = LEO_UNK_MAP,
.poff = LEO_OFF_UNK,
.size = 0x1000
},
{
.voff = LEO_LX_KRN_MAP,
.poff = LEO_OFF_LX_KRN,
.size = 0x1000
},
{
.voff = LEO_LC_SS0_KRN_MAP,
.poff = LEO_OFF_LC_SS0_KRN,
.size = 0x1000
},
{
.voff = LEO_LC_SS1_KRN_MAP,
.poff = LEO_OFF_LC_SS1_KRN,
.size = 0x1000
},
{
.voff = LEO_LD_GBL_MAP,
.poff = LEO_OFF_LD_GBL,
.size = 0x1000
},
{
.voff = LEO_UNK2_MAP,
.poff = LEO_OFF_UNK2,
.size = 0x100000
},
{ .size = 0 }
};
static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct leo_par *par = (struct leo_par *)info->par;
return sbusfb_mmap_helper(leo_mmap_map,
par->physbase, par->fbsize,
par->sdev->reg_addrs[0].which_io,
vma);
}
static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
{
struct leo_par *par = (struct leo_par *) info->par;
return sbusfb_ioctl_helper(cmd, arg, info,
FBTYPE_SUNLEO, 32, par->fbsize);
}
/*
* Initialisation
*/
static void
leo_init_fix(struct fb_info *info)
{
struct leo_par *par = (struct leo_par *)info->par;
strlcpy(info->fix.id, par->sdev->prom_name, sizeof(info->fix.id));
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.visual = FB_VISUAL_TRUECOLOR;
info->fix.line_length = 8192;
info->fix.accel = FB_ACCEL_SUN_LEO;
}
static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
{
struct leo_par *par = (struct leo_par *) info->par;
struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
struct fb_wid_item *wi;
unsigned long flags;
u32 val;
int i, j;
spin_lock_irqsave(&par->lock, flags);
leo_wait(lx_krn);
for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
switch(wi->wi_type) {
case FB_WID_DBL_8:
j = (wi->wi_index & 0xf) + 0x40;
break;
case FB_WID_DBL_24:
j = wi->wi_index & 0x3f;
break;
default:
continue;
};
sbus_writel(0x5800 + j, &lx_krn->krn_type);
sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
}
sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
val = sbus_readl(&lx_krn->krn_csr);
val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
sbus_writel(val, &lx_krn->krn_csr);
spin_unlock_irqrestore(&par->lock, flags);
}
static void leo_init_wids(struct fb_info *info)
{
struct fb_wid_item wi;
struct fb_wid_list wl;
wl.wl_count = 1;
wl.wl_list = &wi;
wi.wi_type = FB_WID_DBL_8;
wi.wi_index = 0;
wi.wi_values [0] = 0x2c0;
leo_wid_put(info, &wl);
wi.wi_index = 1;
wi.wi_values [0] = 0x30;
leo_wid_put(info, &wl);
wi.wi_index = 2;
wi.wi_values [0] = 0x20;
leo_wid_put(info, &wl);
wi.wi_type = FB_WID_DBL_24;
wi.wi_index = 1;
wi.wi_values [0] = 0x30;
leo_wid_put(info, &wl);
}
static void leo_switch_from_graph(struct fb_info *info)
{
struct leo_par *par = (struct leo_par *) info->par;
struct leo_ld __iomem *ss = (struct leo_ld __iomem *) par->ld_ss0;
unsigned long flags;
u32 val;
spin_lock_irqsave(&par->lock, flags);
par->extent = ((info->var.xres - 1) |
((info->var.yres - 1) << 16));
sbus_writel(0xffffffff, &ss->wid);
sbus_writel(0xffff, &ss->wmask);
sbus_writel(0, &ss->vclipmin);
sbus_writel(par->extent, &ss->vclipmax);
sbus_writel(0, &ss->fg);
sbus_writel(0xff000000, &ss->planemask);
sbus_writel(0x310850, &ss->rop);
sbus_writel(0, &ss->widclip);
sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
&par->lc_ss0_usr->extent);
sbus_writel(4, &par->lc_ss0_usr->addrspace);
sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
sbus_writel(0, &par->lc_ss0_usr->fontt);
do {
val = sbus_readl(&par->lc_ss0_usr->csr);
} while (val & 0x20000000);
spin_unlock_irqrestore(&par->lock, flags);
}
static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
{
/* We just use this to catch switches out of
* graphics mode.
*/
leo_switch_from_graph(info);
if (var->xoffset || var->yoffset || var->vmode)
return -EINVAL;
return 0;
}
static void leo_init_hw(struct fb_info *info)
{
struct leo_par *par = (struct leo_par *) info->par;
u32 val;
val = sbus_readl(&par->ld_ss1->ss1_misc);
val |= LEO_SS1_MISC_ENABLE;
sbus_writel(val, &par->ld_ss1->ss1_misc);
leo_switch_from_graph(info);
}
static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
{
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 16;
var->blue.length = 8;
var->transp.offset = 0;
var->transp.length = 0;
}
struct all_info {
struct fb_info info;
struct leo_par par;
struct list_head list;
};
static LIST_HEAD(leo_list);
static void leo_init_one(struct sbus_dev *sdev)
{
struct all_info *all;
int linebytes;
all = kmalloc(sizeof(*all), GFP_KERNEL);
if (!all) {
printk(KERN_ERR "leo: Cannot allocate memory.\n");
return;
}
memset(all, 0, sizeof(*all));
INIT_LIST_HEAD(&all->list);
spin_lock_init(&all->par.lock);
all->par.sdev = sdev;
all->par.physbase = sdev->reg_addrs[0].phys_addr;
sbusfb_fill_var(&all->info.var, sdev->prom_node, 32);
leo_fixup_var_rgb(&all->info.var);
linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
all->info.var.xres);
all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
#ifdef CONFIG_SPARC32
all->info.screen_base = (char __iomem *)
prom_getintdefault(sdev->prom_node, "address", 0);
#endif
if (!all->info.screen_base)
all->info.screen_base =
sbus_ioremap(&sdev->resource[0], LEO_OFF_SS0,
0x800000, "leo ram");
all->par.lc_ss0_usr =
sbus_ioremap(&sdev->resource[0], LEO_OFF_LC_SS0_USR,
0x1000, "leolc ss0usr");
all->par.ld_ss0 =
sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS0,
0x1000, "leold ss0");
all->par.ld_ss1 =
sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS1,
0x1000, "leold ss1");
all->par.lx_krn =
sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_KRN,
0x1000, "leolx krn");
all->par.cursor =
sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_CURSOR,
sizeof(struct leo_cursor), "leolx cursor");
all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
all->info.fbops = &leo_ops;
all->info.par = &all->par;
leo_init_wids(&all->info);
leo_init_hw(&all->info);
leo_blank(0, &all->info);
if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
printk(KERN_ERR "leo: Could not allocate color map.\n");
kfree(all);
return;
}
leo_init_fix(&all->info);
if (register_framebuffer(&all->info) < 0) {
printk(KERN_ERR "leo: Could not register framebuffer.\n");
fb_dealloc_cmap(&all->info.cmap);
kfree(all);
return;
}
list_add(&all->list, &leo_list);
printk("leo: %s at %lx:%lx\n",
sdev->prom_name,
(long) sdev->reg_addrs[0].which_io,
(long) sdev->reg_addrs[0].phys_addr);
}
int __init leo_init(void)
{
struct sbus_bus *sbus;
struct sbus_dev *sdev;
if (fb_get_options("leofb", NULL))
return -ENODEV;
for_all_sbusdev(sdev, sbus) {
if (!strcmp(sdev->prom_name, "leo"))
leo_init_one(sdev);
}
return 0;
}
void __exit leo_exit(void)
{
struct list_head *pos, *tmp;
list_for_each_safe(pos, tmp, &leo_list) {
struct all_info *all = list_entry(pos, typeof(*all), list);
unregister_framebuffer(&all->info);
fb_dealloc_cmap(&all->info.cmap);
kfree(all);
}
}
int __init
leo_setup(char *arg)
{
/* No cmdline options yet... */
return 0;
}
module_init(leo_init);
#ifdef MODULE
module_exit(leo_exit);
#endif
MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
MODULE_LICENSE("GPL");
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