--- /dev/null
+/* leo.c: LEO frame buffer driver
+ *
+ * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
+ * 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/delay.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+#include <linux/mm.h>
+#include <linux/of_device.h>
+#include <linux/io.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];
+ 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 0x00000002
+struct 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_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,
+ info->fix.smem_start, info->fix.smem_len,
+ par->which_io, vma);
+}
+
+static int leo_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 void
+leo_init_fix(struct fb_info *info, struct device_node *dp)
+{
+ strlcpy(info->fix.id, dp->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_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->flags = FBINFO_DEFAULT;
+ 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 "%s: leo at %lx:%lx\n",
+ dp->full_name,
+ 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 int 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);
+
+ return 0;
+}
+
+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");
Code Review / kvmfornfv.git / blobdiff