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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/module.h>#include <linux/kernel.h>#include <linux/errno.h>#include <linux/string.h>#include <linux/delay.h>#include <linux/init.h>#include <linux/fb.h>#include <linux/mm.h>#include <linux/io.h>#include <linux/of.h>#include <linux/platform_device.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_pan_display(struct fb_var_screeninfo *, struct fb_info *);
static int leo_sbusfb_mmap(struct fb_info *info, struct vm_area_struct *vma);static int leo_sbusfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg);
/* * Frame buffer operations */
static const struct fb_ops leo_ops = { .owner = THIS_MODULE, FB_DEFAULT_SBUS_OPS(leo), .fb_setcolreg = leo_setcolreg, .fb_blank = leo_blank, .fb_pan_display = leo_pan_display,};
#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]; u32 cur_type; u32 cur_misc; u32 cur_cursxy; 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 { u32 krn_type; u32 krn_csr; u32 krn_value;};
struct leo_lc_ss0_krn { u32 misc; u8 xxx0[0x800-4]; u32 rev;};
struct leo_lc_ss0_usr { u32 csr; u32 addrspace; u32 fontmsk; u32 fontt; u32 extent; u32 src; u32 dst; u32 copy; u32 fill;};
struct leo_lc_ss1_krn { u8 unknown;};
struct leo_lc_ss1_usr { u8 unknown;};
struct leo_ld_ss0 { u8 xxx0[0xe00]; u32 csr; u32 wid; u32 wmask; u32 widclip; u32 vclipmin; u32 vclipmax; u32 pickmin; /* SS1 only */ u32 pickmax; /* SS1 only */ u32 fg; u32 bg; u32 src; /* Copy/Scroll (SS0 only) */ u32 dst; /* Copy/Scroll/Fill (SS0 only) */ u32 extent; /* Copy/Scroll/Fill size (SS0 only) */ u32 xxx1[3]; u32 setsem; /* SS1 only */ u32 clrsem; /* SS1 only */ u32 clrpick; /* SS1 only */ u32 clrdat; /* SS1 only */ u32 alpha; /* SS1 only */ u8 xxx2[0x2c]; u32 winbg; u32 planemask; u32 rop; u32 z; u32 dczf; /* SS1 only */ u32 dczb; /* SS1 only */ u32 dcs; /* SS1 only */ u32 dczs; /* SS1 only */ u32 pickfb; /* SS1 only */ u32 pickbb; /* SS1 only */ u32 dcfc; /* SS1 only */ u32 forcecol; /* SS1 only */ u32 door[8]; /* SS1 only */ u32 pick[5]; /* SS1 only */};
#define LEO_SS1_MISC_ENABLE 0x00000001#define LEO_SS1_MISC_STEREO 0x00000002struct leo_ld_ss1 { u8 xxx0[0xef4]; 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 which_io;};
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;}
static void leo_switch_from_graph(struct fb_info *info){ struct leo_par *par = (struct leo_par *) info->par; struct leo_ld_ss0 __iomem *ss = par->ld_ss0; struct leo_cursor __iomem *cursor = par->cursor; 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);
/* setup screen buffer for cfb_* functions */ sbus_writel(1, &ss->wid); sbus_writel(0x00ffffff, &ss->planemask); sbus_writel(0x310b90, &ss->rop); sbus_writel(0, &par->lc_ss0_usr->addrspace);
/* hide cursor */ sbus_writel(sbus_readl(&cursor->cur_misc) & ~LEO_CUR_ENABLE, &cursor->cur_misc);
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;}
/** * 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: 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 const 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_sbusfb_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, info->fix.smem_start, info->fix.smem_len, par->which_io, vma);}
static int leo_sbusfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg){ return sbusfb_ioctl_helper(cmd, arg, info, FBTYPE_SUNLEO, 32, info->fix.smem_len);}
/* * Initialisation */
static voidleo_init_fix(struct fb_info *info, struct device_node *dp){ snprintf(info->fix.id, sizeof(info->fix.id), "%pOFn", dp);
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_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;}
static void leo_unmap_regs(struct platform_device *op, struct fb_info *info, struct leo_par *par){ if (par->lc_ss0_usr) of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000); if (par->ld_ss0) of_iounmap(&op->resource[0], par->ld_ss0, 0x1000); if (par->ld_ss1) of_iounmap(&op->resource[0], par->ld_ss1, 0x1000); if (par->lx_krn) of_iounmap(&op->resource[0], par->lx_krn, 0x1000); if (par->cursor) of_iounmap(&op->resource[0], par->cursor, sizeof(struct leo_cursor)); if (info->screen_base) of_iounmap(&op->resource[0], info->screen_base, 0x800000);}
static int leo_probe(struct platform_device *op){ struct device_node *dp = op->dev.of_node; struct fb_info *info; struct leo_par *par; int linebytes, err;
info = framebuffer_alloc(sizeof(struct leo_par), &op->dev);
err = -ENOMEM; if (!info) goto out_err; par = info->par;
spin_lock_init(&par->lock);
info->fix.smem_start = op->resource[0].start; par->which_io = op->resource[0].flags & IORESOURCE_BITS;
sbusfb_fill_var(&info->var, dp, 32); leo_fixup_var_rgb(&info->var);
linebytes = of_getintprop_default(dp, "linebytes", info->var.xres); info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
par->lc_ss0_usr = of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR, 0x1000, "leolc ss0usr"); par->ld_ss0 = of_ioremap(&op->resource[0], LEO_OFF_LD_SS0, 0x1000, "leold ss0"); par->ld_ss1 = of_ioremap(&op->resource[0], LEO_OFF_LD_SS1, 0x1000, "leold ss1"); par->lx_krn = of_ioremap(&op->resource[0], LEO_OFF_LX_KRN, 0x1000, "leolx krn"); par->cursor = of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR, sizeof(struct leo_cursor), "leolx cursor"); info->screen_base = of_ioremap(&op->resource[0], LEO_OFF_SS0, 0x800000, "leo ram"); if (!par->lc_ss0_usr || !par->ld_ss0 || !par->ld_ss1 || !par->lx_krn || !par->cursor || !info->screen_base) goto out_unmap_regs;
info->fbops = &leo_ops; info->pseudo_palette = par->clut_data;
leo_init_wids(info); leo_init_hw(info);
leo_blank(FB_BLANK_UNBLANK, info);
if (fb_alloc_cmap(&info->cmap, 256, 0)) goto out_unmap_regs;
leo_init_fix(info, dp);
err = register_framebuffer(info); if (err < 0) goto out_dealloc_cmap;
dev_set_drvdata(&op->dev, info);
printk(KERN_INFO "%pOF: leo at %lx:%lx\n", dp, par->which_io, info->fix.smem_start);
return 0;
out_dealloc_cmap: fb_dealloc_cmap(&info->cmap);
out_unmap_regs: leo_unmap_regs(op, info, par); framebuffer_release(info);
out_err: return err;}
static void leo_remove(struct platform_device *op){ struct fb_info *info = dev_get_drvdata(&op->dev); struct leo_par *par = info->par;
unregister_framebuffer(info); fb_dealloc_cmap(&info->cmap);
leo_unmap_regs(op, info, par);
framebuffer_release(info);}
static const struct of_device_id leo_match[] = { { .name = "SUNW,leo", }, {},};MODULE_DEVICE_TABLE(of, leo_match);
static struct platform_driver leo_driver = { .driver = { .name = "leo", .of_match_table = leo_match, }, .probe = leo_probe, .remove = leo_remove,};
static int __init leo_init(void){ if (fb_get_options("leofb", NULL)) return -ENODEV;
return platform_driver_register(&leo_driver);}
static void __exit leo_exit(void){ platform_driver_unregister(&leo_driver);}
module_init(leo_init);module_exit(leo_exit);
MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");MODULE_VERSION("2.0");MODULE_LICENSE("GPL");