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path: root/drivers/video/sun3fb.c
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Diffstat (limited to 'drivers/video/sun3fb.c')
-rw-r--r--drivers/video/sun3fb.c704
1 files changed, 704 insertions, 0 deletions
diff --git a/drivers/video/sun3fb.c b/drivers/video/sun3fb.c
new file mode 100644
index 00000000000..9b36b9df535
--- /dev/null
+++ b/drivers/video/sun3fb.c
@@ -0,0 +1,704 @@
+/*
+ * linux/drivers/video/sun3fb.c -- Frame buffer driver for Sun3
+ *
+ * (C) 1998 Thomas Bogendoerfer
+ *
+ * This driver is bases on sbusfb.c, which is
+ *
+ * Copyright (C) 1998 Jakub Jelinek
+ *
+ * This driver is partly based on the Open Firmware console driver
+ *
+ * Copyright (C) 1997 Geert Uytterhoeven
+ *
+ * and SPARC console subsystem
+ *
+ * Copyright (C) 1995 Peter Zaitcev (zaitcev@yahoo.com)
+ * Copyright (C) 1995-1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1995-1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ * Copyright (C) 1996 Dave Redman (djhr@tadpole.co.uk)
+ * Copyright (C) 1996-1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/selection.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/kd.h>
+#include <linux/vt_kern.h>
+
+#include <asm/uaccess.h>
+#include <asm/pgtable.h> /* io_remap_page_range() */
+
+#ifdef CONFIG_SUN3
+#include <asm/oplib.h>
+#include <asm/machines.h>
+#include <asm/idprom.h>
+
+#define CGFOUR_OBMEM_ADDR 0x1f300000
+#define BWTWO_OBMEM_ADDR 0x1f000000
+#define BWTWO_OBMEM50_ADDR 0x00100000
+
+#endif
+#ifdef CONFIG_SUN3X
+#include <asm/sun3x.h>
+#endif
+#include <video/sbusfb.h>
+
+#define DEFAULT_CURSOR_BLINK_RATE (2*HZ/5)
+
+#define CURSOR_SHAPE 1
+#define CURSOR_BLINK 2
+
+#define mymemset(x,y) memset(x,0,y)
+
+ /*
+ * Interface used by the world
+ */
+
+int sun3fb_init(void);
+void sun3fb_setup(char *options);
+
+static char fontname[40] __initdata = { 0 };
+static int curblink __initdata = 1;
+
+static int sun3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
+ struct fb_info *info);
+static int sun3fb_get_var(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info);
+static int sun3fb_set_var(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info);
+static int sun3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info);
+static int sun3fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info);
+static int sun3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info);
+static int sun3fb_blank(int blank, struct fb_info *info);
+static void sun3fb_cursor(struct display *p, int mode, int x, int y);
+static void sun3fb_clear_margin(struct display *p, int s);
+
+ /*
+ * Interface to the low level console driver
+ */
+
+static int sun3fbcon_switch(int con, struct fb_info *info);
+static int sun3fbcon_updatevar(int con, struct fb_info *info);
+
+ /*
+ * Internal routines
+ */
+
+static int sun3fb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
+ u_int *transp, struct fb_info *info);
+
+static struct fb_ops sun3fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_get_fix = sun3fb_get_fix,
+ .fb_get_var = sun3fb_get_var,
+ .fb_set_var = sun3fb_set_var,
+ .fb_get_cmap = sun3fb_get_cmap,
+ .fb_set_cmap = sun3fb_set_cmap,
+ .fb_setcolreg = sun3fb_setcolreg,
+ .fb_blank = sun3fb_blank,
+};
+
+static void sun3fb_clear_margin(struct display *p, int s)
+{
+ struct fb_info_sbusfb *fb = sbusfbinfod(p);
+
+ return;
+
+ if (fb->switch_from_graph)
+ (*fb->switch_from_graph)(fb);
+ if (fb->fill) {
+ unsigned short rects [16];
+
+ rects [0] = 0;
+ rects [1] = 0;
+ rects [2] = fb->var.xres_virtual;
+ rects [3] = fb->y_margin;
+ rects [4] = 0;
+ rects [5] = fb->y_margin;
+ rects [6] = fb->x_margin;
+ rects [7] = fb->var.yres_virtual;
+ rects [8] = fb->var.xres_virtual - fb->x_margin;
+ rects [9] = fb->y_margin;
+ rects [10] = fb->var.xres_virtual;
+ rects [11] = fb->var.yres_virtual;
+ rects [12] = fb->x_margin;
+ rects [13] = fb->var.yres_virtual - fb->y_margin;
+ rects [14] = fb->var.xres_virtual - fb->x_margin;
+ rects [15] = fb->var.yres_virtual;
+ (*fb->fill)(fb, p, s, 4, rects);
+ } else {
+ unsigned char *fb_base = fb->info.screen_base, *q;
+ int skip_bytes = fb->y_margin * fb->var.xres_virtual;
+ int scr_size = fb->var.xres_virtual * fb->var.yres_virtual;
+ int h, he, incr, size;
+
+ he = fb->var.yres;
+ if (fb->var.bits_per_pixel == 1) {
+ fb_base -= (skip_bytes + fb->x_margin) / 8;
+ skip_bytes /= 8;
+ scr_size /= 8;
+ mymemset (fb_base, skip_bytes - fb->x_margin / 8);
+ mymemset (fb_base + scr_size - skip_bytes + fb->x_margin / 8, skip_bytes - fb->x_margin / 8);
+ incr = fb->var.xres_virtual / 8;
+ size = fb->x_margin / 8 * 2;
+ for (q = fb_base + skip_bytes - fb->x_margin / 8, h = 0;
+ h <= he; q += incr, h++)
+ mymemset (q, size);
+ } else {
+ fb_base -= (skip_bytes + fb->x_margin);
+ memset (fb_base, attr_bgcol(p,s), skip_bytes - fb->x_margin);
+ memset (fb_base + scr_size - skip_bytes + fb->x_margin, attr_bgcol(p,s), skip_bytes - fb->x_margin);
+ incr = fb->var.xres_virtual;
+ size = fb->x_margin * 2;
+ for (q = fb_base + skip_bytes - fb->x_margin, h = 0;
+ h <= he; q += incr, h++)
+ memset (q, attr_bgcol(p,s), size);
+ }
+ }
+}
+
+static void sun3fb_disp_setup(struct display *p)
+{
+ struct fb_info_sbusfb *fb = sbusfbinfod(p);
+
+ if (fb->setup)
+ fb->setup(p);
+ sun3fb_clear_margin(p, 0);
+}
+
+ /*
+ * Get the Fixed Part of the Display
+ */
+
+static int sun3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
+ struct fb_info *info)
+{
+ struct fb_info_sbusfb *fb = sbusfbinfo(info);
+
+ memcpy(fix, &fb->fix, sizeof(struct fb_fix_screeninfo));
+ return 0;
+}
+
+ /*
+ * Get the User Defined Part of the Display
+ */
+
+static int sun3fb_get_var(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info)
+{
+ struct fb_info_sbusfb *fb = sbusfbinfo(info);
+
+ memcpy(var, &fb->var, sizeof(struct fb_var_screeninfo));
+ return 0;
+}
+
+ /*
+ * Set the User Defined Part of the Display
+ */
+
+static int sun3fb_set_var(struct fb_var_screeninfo *var, int con,
+ struct fb_info *info)
+{
+ struct fb_info_sbusfb *fb = sbusfbinfo(info);
+
+ if (var->xres > fb->var.xres || var->yres > fb->var.yres ||
+ var->xres_virtual > fb->var.xres_virtual ||
+ var->yres_virtual > fb->var.yres_virtual ||
+ var->bits_per_pixel != fb->var.bits_per_pixel ||
+ var->nonstd ||
+ (var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)
+ return -EINVAL;
+ memcpy(var, &fb->var, sizeof(struct fb_var_screeninfo));
+ return 0;
+}
+
+ /*
+ * Hardware cursor
+ */
+
+static unsigned char hw_cursor_cmap[2] = { 0, 0xff };
+
+static void
+sun3fb_cursor_timer_handler(unsigned long dev_addr)
+{
+ struct fb_info_sbusfb *fb = (struct fb_info_sbusfb *)dev_addr;
+
+ if (!fb->setcursor) return;
+
+ if (fb->cursor.mode & CURSOR_BLINK) {
+ fb->cursor.enable ^= 1;
+ fb->setcursor(fb);
+ }
+
+ fb->cursor.timer.expires = jiffies + fb->cursor.blink_rate;
+ add_timer(&fb->cursor.timer);
+}
+
+static void sun3fb_cursor(struct display *p, int mode, int x, int y)
+{
+ struct fb_info_sbusfb *fb = sbusfbinfod(p);
+
+ switch (mode) {
+ case CM_ERASE:
+ fb->cursor.mode &= ~CURSOR_BLINK;
+ fb->cursor.enable = 0;
+ (*fb->setcursor)(fb);
+ break;
+
+ case CM_MOVE:
+ case CM_DRAW:
+ if (fb->cursor.mode & CURSOR_SHAPE) {
+ fb->cursor.size.fbx = fontwidth(p);
+ fb->cursor.size.fby = fontheight(p);
+ fb->cursor.chot.fbx = 0;
+ fb->cursor.chot.fby = 0;
+ fb->cursor.enable = 1;
+ memset (fb->cursor.bits, 0, sizeof (fb->cursor.bits));
+ fb->cursor.bits[0][fontheight(p) - 2] = (0xffffffff << (32 - fontwidth(p)));
+ fb->cursor.bits[1][fontheight(p) - 2] = (0xffffffff << (32 - fontwidth(p)));
+ fb->cursor.bits[0][fontheight(p) - 1] = (0xffffffff << (32 - fontwidth(p)));
+ fb->cursor.bits[1][fontheight(p) - 1] = (0xffffffff << (32 - fontwidth(p)));
+ (*fb->setcursormap) (fb, hw_cursor_cmap, hw_cursor_cmap, hw_cursor_cmap);
+ (*fb->setcurshape) (fb);
+ }
+ fb->cursor.mode = CURSOR_BLINK;
+ if (fontwidthlog(p))
+ fb->cursor.cpos.fbx = (x << fontwidthlog(p)) + fb->x_margin;
+ else
+ fb->cursor.cpos.fbx = (x * fontwidth(p)) + fb->x_margin;
+ if (fontheightlog(p))
+ fb->cursor.cpos.fby = (y << fontheightlog(p)) + fb->y_margin;
+ else
+ fb->cursor.cpos.fby = (y * fontheight(p)) + fb->y_margin;
+ (*fb->setcursor)(fb);
+ break;
+ }
+}
+
+ /*
+ * Get the Colormap
+ */
+
+static int sun3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info)
+{
+ if (con == info->currcon) /* current console? */
+ return fb_get_cmap(cmap, kspc, sun3fb_getcolreg, info);
+ else if (fb_display[con].cmap.len) /* non default colormap? */
+ fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
+ else
+ fb_copy_cmap(fb_default_cmap(1<<fb_display[con].var.bits_per_pixel), cmap, kspc ? 0 : 2);
+ return 0;
+}
+
+ /*
+ * Set the Colormap
+ */
+
+static int sun3fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info)
+{
+ int err;
+
+ if (!fb_display[con].cmap.len) { /* no colormap allocated? */
+ if ((err = fb_alloc_cmap(&fb_display[con].cmap, 1<<fb_display[con].var.bits_per_pixel, 0)))
+ return err;
+ }
+ if (con == info->currcon) { /* current console? */
+ err = fb_set_cmap(cmap, kspc, info);
+ if (!err) {
+ struct fb_info_sbusfb *fb = sbusfbinfo(info);
+
+ if (fb->loadcmap)
+ (*fb->loadcmap)(fb, &fb_display[con], cmap->start, cmap->len);
+ }
+ return err;
+ } else
+ fb_copy_cmap(cmap, &fb_display[con].cmap, kspc ? 0 : 1);
+ return 0;
+}
+
+ /*
+ * Setup: parse used options
+ */
+
+void __init sun3fb_setup(char *options)
+{
+ char *p;
+
+ for (p = options;;) {
+ if (!strncmp(p, "font=", 5)) {
+ int i;
+
+ for (i = 0; i < sizeof(fontname) - 1; i++)
+ if (p[i+5] == ' ' || !p[i+5])
+ break;
+ memcpy(fontname, p+5, i);
+ fontname[i] = 0;
+ } else if (!strncmp(p, "noblink", 7))
+ curblink = 0;
+ while (*p && *p != ' ' && *p != ',') p++;
+ if (*p != ',') break;
+ p++;
+ }
+
+ return;
+}
+
+static int sun3fbcon_switch(int con, struct fb_info *info)
+{
+ int x_margin, y_margin;
+ struct fb_info_sbusfb *fb = sbusfbinfo(info);
+ int lastconsole;
+
+ /* Do we have to save the colormap? */
+ if (fb_display[info->currcon].cmap.len)
+ fb_get_cmap(&fb_display[info->currcon].cmap, 1, sun3fb_getcolreg, info);
+
+ if (info->display_fg) {
+ lastconsole = info->display_fg->vc_num;
+ if (lastconsole != con &&
+ (fontwidth(&fb_display[lastconsole]) != fontwidth(&fb_display[con]) ||
+ fontheight(&fb_display[lastconsole]) != fontheight(&fb_display[con])))
+ fb->cursor.mode |= CURSOR_SHAPE;
+ }
+ x_margin = (fb_display[con].var.xres_virtual - fb_display[con].var.xres) / 2;
+ y_margin = (fb_display[con].var.yres_virtual - fb_display[con].var.yres) / 2;
+ if (fb->margins)
+ fb->margins(fb, &fb_display[con], x_margin, y_margin);
+ if (fb->graphmode || fb->x_margin != x_margin || fb->y_margin != y_margin) {
+ fb->x_margin = x_margin; fb->y_margin = y_margin;
+ sun3fb_clear_margin(&fb_display[con], 0);
+ }
+ info->currcon = con;
+ /* Install new colormap */
+ do_install_cmap(con, info);
+ return 0;
+}
+
+ /*
+ * Update the `var' structure (called by fbcon.c)
+ */
+
+static int sun3fbcon_updatevar(int con, struct fb_info *info)
+{
+ /* Nothing */
+ return 0;
+}
+
+ /*
+ * Blank the display.
+ */
+
+static int sun3fb_blank(int blank, struct fb_info *info)
+{
+ struct fb_info_sbusfb *fb = sbusfbinfo(info);
+
+ if (blank && fb->blank)
+ return fb->blank(fb);
+ else if (!blank && fb->unblank)
+ return fb->unblank(fb);
+ return 0;
+}
+
+ /*
+ * Read a single color register and split it into
+ * colors/transparent. Return != 0 for invalid regno.
+ */
+
+static int sun3fb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
+ u_int *transp, struct fb_info *info)
+{
+ struct fb_info_sbusfb *fb = sbusfbinfo(info);
+
+ if (!fb->color_map || regno > 255)
+ return 1;
+ *red = (fb->color_map CM(regno, 0)<<8) | fb->color_map CM(regno, 0);
+ *green = (fb->color_map CM(regno, 1)<<8) | fb->color_map CM(regno, 1);
+ *blue = (fb->color_map CM(regno, 2)<<8) | fb->color_map CM(regno, 2);
+ *transp = 0;
+ return 0;
+}
+
+
+ /*
+ * Set a single color register. The values supplied are already
+ * rounded down to the hardware's capabilities (according to the
+ * entries in the var structure). Return != 0 for invalid regno.
+ */
+
+static int sun3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info)
+{
+ struct fb_info_sbusfb *fb = sbusfbinfo(info);
+
+ if (!fb->color_map || regno > 255)
+ return 1;
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+ fb->color_map CM(regno, 0) = red;
+ fb->color_map CM(regno, 1) = green;
+ fb->color_map CM(regno, 2) = blue;
+ return 0;
+}
+
+static int sun3fb_set_font(struct display *p, int width, int height)
+{
+ int w = p->var.xres_virtual, h = p->var.yres_virtual;
+ int depth = p->var.bits_per_pixel;
+ struct fb_info_sbusfb *fb = sbusfbinfod(p);
+ int x_margin, y_margin;
+
+ if (depth > 8) depth = 8;
+ x_margin = (w % width) / 2;
+ y_margin = (h % height) / 2;
+
+ p->var.xres = w - 2*x_margin;
+ p->var.yres = h - 2*y_margin;
+
+ fb->cursor.mode |= CURSOR_SHAPE;
+
+ if (fb->margins)
+ fb->margins(fb, p, x_margin, y_margin);
+ if (fb->x_margin != x_margin || fb->y_margin != y_margin) {
+ fb->x_margin = x_margin; fb->y_margin = y_margin;
+ sun3fb_clear_margin(p, 0);
+ }
+
+ return 1;
+}
+
+void sun3fb_palette(int enter)
+{
+ int i;
+ struct display *p;
+
+ for (i = 0; i < MAX_NR_CONSOLES; i++) {
+ p = &fb_display[i];
+ if (p->dispsw && p->dispsw->setup == sun3fb_disp_setup &&
+ p->fb_info->display_fg &&
+ p->fb_info->display_fg->vc_num == i) {
+ struct fb_info_sbusfb *fb = sbusfbinfod(p);
+
+ if (fb->restore_palette) {
+ if (enter)
+ fb->restore_palette(fb);
+ else if (vc_cons[i].d->vc_mode != KD_GRAPHICS)
+ vc_cons[i].d->vc_sw->con_set_palette(vc_cons[i].d, color_table);
+ }
+ }
+ }
+}
+
+ /*
+ * Initialisation
+ */
+static int __init sun3fb_init_fb(int fbtype, unsigned long addr)
+{
+ static struct sbus_dev sdb;
+ struct fb_fix_screeninfo *fix;
+ struct fb_var_screeninfo *var;
+ struct display *disp;
+ struct fb_info_sbusfb *fb;
+ struct fbtype *type;
+ int linebytes, w, h, depth;
+ char *p = NULL;
+
+ fb = kmalloc(sizeof(struct fb_info_sbusfb), GFP_ATOMIC);
+ if (!fb)
+ return -ENOMEM;
+
+ memset(fb, 0, sizeof(struct fb_info_sbusfb));
+ fix = &fb->fix;
+ var = &fb->var;
+ disp = &fb->disp;
+ type = &fb->type;
+
+ sdb.reg_addrs[0].phys_addr = addr;
+ fb->sbdp = &sdb;
+
+ type->fb_type = fbtype;
+
+ type->fb_height = h = 900;
+ type->fb_width = w = 1152;
+sizechange:
+ type->fb_depth = depth = (fbtype == FBTYPE_SUN2BW) ? 1 : 8;
+ linebytes = w * depth / 8;
+ type->fb_size = PAGE_ALIGN((linebytes) * h);
+/*
+ fb->x_margin = (w & 7) / 2;
+ fb->y_margin = (h & 15) / 2;
+*/
+ fb->x_margin = fb->y_margin = 0;
+
+ var->xres_virtual = w;
+ var->yres_virtual = h;
+ var->xres = w - 2*fb->x_margin;
+ var->yres = h - 2*fb->y_margin;
+
+ var->bits_per_pixel = depth;
+ var->height = var->width = -1;
+ var->pixclock = 10000;
+ var->vmode = FB_VMODE_NONINTERLACED;
+ var->red.length = var->green.length = var->blue.length = 8;
+
+ fix->line_length = linebytes;
+ fix->smem_len = type->fb_size;
+ fix->type = FB_TYPE_PACKED_PIXELS;
+ fix->visual = FB_VISUAL_PSEUDOCOLOR;
+
+ fb->info.fbops = &sun3fb_ops;
+ fb->info.disp = disp;
+ fb->info.currcon = -1;
+ strcpy(fb->info.fontname, fontname);
+ fb->info.changevar = NULL;
+ fb->info.switch_con = &sun3fbcon_switch;
+ fb->info.updatevar = &sun3fbcon_updatevar;
+ fb->info.flags = FBINFO_FLAG_DEFAULT;
+
+ fb->cursor.hwsize.fbx = 32;
+ fb->cursor.hwsize.fby = 32;
+
+ if (depth > 1 && !fb->color_map) {
+ if((fb->color_map = kmalloc(256 * 3, GFP_ATOMIC))==NULL)
+ return -ENOMEM;
+ }
+
+ switch(fbtype) {
+#ifdef CONFIG_FB_CGSIX
+ case FBTYPE_SUNFAST_COLOR:
+ p = cgsixfb_init(fb); break;
+#endif
+#ifdef CONFIG_FB_BWTWO
+ case FBTYPE_SUN2BW:
+ p = bwtwofb_init(fb); break;
+#endif
+#ifdef CONFIG_FB_CGTHREE
+ case FBTYPE_SUN4COLOR:
+ case FBTYPE_SUN3COLOR:
+ type->fb_size = 0x100000;
+ p = cgthreefb_init(fb); break;
+#endif
+ }
+ fix->smem_start = (unsigned long)fb->info.screen_base; // FIXME
+
+ if (!p) {
+ kfree(fb);
+ return -ENODEV;
+ }
+
+ if (p == SBUSFBINIT_SIZECHANGE)
+ goto sizechange;
+
+ disp->dispsw = &fb->dispsw;
+ if (fb->setcursor) {
+ fb->dispsw.cursor = sun3fb_cursor;
+ if (curblink) {
+ fb->cursor.blink_rate = DEFAULT_CURSOR_BLINK_RATE;
+ init_timer(&fb->cursor.timer);
+ fb->cursor.timer.expires = jiffies + fb->cursor.blink_rate;
+ fb->cursor.timer.data = (unsigned long)fb;
+ fb->cursor.timer.function = sun3fb_cursor_timer_handler;
+ add_timer(&fb->cursor.timer);
+ }
+ }
+ fb->cursor.mode = CURSOR_SHAPE;
+ fb->dispsw.set_font = sun3fb_set_font;
+ fb->setup = fb->dispsw.setup;
+ fb->dispsw.setup = sun3fb_disp_setup;
+ fb->dispsw.clear_margins = NULL;
+
+ disp->var = *var;
+ disp->visual = fix->visual;
+ disp->type = fix->type;
+ disp->type_aux = fix->type_aux;
+ disp->line_length = fix->line_length;
+
+ if (fb->blank)
+ disp->can_soft_blank = 1;
+
+ sun3fb_set_var(var, -1, &fb->info);
+
+ if (register_framebuffer(&fb->info) < 0) {
+ kfree(fb);
+ return -EINVAL;
+ }
+ printk("fb%d: %s\n", fb->info.node, p);
+
+ return 0;
+}
+
+
+int __init sun3fb_init(void)
+{
+ extern int con_is_present(void);
+ unsigned long addr;
+ char p4id;
+
+ if (!con_is_present()) return -ENODEV;
+#ifdef CONFIG_SUN3
+ switch(*(romvec->pv_fbtype))
+ {
+ case FBTYPE_SUN2BW:
+ addr = 0xfe20000;
+ return sun3fb_init_fb(FBTYPE_SUN2BW, addr);
+ case FBTYPE_SUN3COLOR:
+ case FBTYPE_SUN4COLOR:
+ if(idprom->id_machtype != (SM_SUN3|SM_3_60)) {
+ printk("sun3fb: cgthree/four only supported on 3/60\n");
+ return -ENODEV;
+ }
+
+ addr = CGFOUR_OBMEM_ADDR;
+ return sun3fb_init_fb(*(romvec->pv_fbtype), addr);
+ default:
+ printk("sun3fb: unsupported framebuffer\n");
+ return -ENODEV;
+ }
+#else
+ addr = SUN3X_VIDEO_BASE;
+ p4id = *(char *)SUN3X_VIDEO_P4ID;
+
+ p4id = (p4id == 0x45) ? p4id : (p4id & 0xf0);
+ switch (p4id) {
+ case 0x00:
+ return sun3fb_init_fb(FBTYPE_SUN2BW, addr);
+#if 0 /* not yet */
+ case 0x40:
+ return sun3fb_init_fb(FBTYPE_SUN4COLOR, addr);
+ break;
+ case 0x45:
+ return sun3fb_init_fb(FBTYPE_SUN8COLOR, addr);
+ break;
+#endif
+ case 0x60:
+ return sun3fb_init_fb(FBTYPE_SUNFAST_COLOR, addr);
+ }
+#endif
+
+ return -ENODEV;
+}
+
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-25 03:46:53 +0000