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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/video/leo.c | |
download | linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/video/leo.c')
-rw-r--r-- | drivers/video/leo.c | 666 |
1 files changed, 666 insertions, 0 deletions
diff --git a/drivers/video/leo.c b/drivers/video/leo.c new file mode 100644 index 00000000000..7e1e7fb168b --- /dev/null +++ b/drivers/video/leo.c @@ -0,0 +1,666 @@ +/* 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 file *, struct vm_area_struct *); +static int leo_ioctl(struct inode *, struct file *, unsigned int, + unsigned long, struct fb_info *); +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, + .fb_cursor = soft_cursor, +}; + +#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; + struct list_head list; +}; + +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 file *file, 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 inode *inode, struct file *file, unsigned int cmd, + unsigned long arg, struct fb_info *info) +{ + 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"); |