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/*
* linux/drivers/video/sbusfb.c -- SBUS or UPA based frame buffer device
*
* 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() */
#include <video/sbusfb.h>
#define DEFAULT_CURSOR_BLINK_RATE (2*HZ/5)
#define CURSOR_SHAPE 1
#define CURSOR_BLINK 2
/*
* Interface used by the world
*/
int sbusfb_init(void);
int sbusfb_setup(char*);
static int currcon;
static int defx_margin = -1, defy_margin = -1;
static char fontname[40] __initdata = { 0 };
static int curblink __initdata = 1;
static struct {
int depth;
int xres, yres;
int x_margin, y_margin;
} def_margins [] = {
{ 8, 1280, 1024, 64, 80 },
{ 8, 1152, 1024, 64, 80 },
{ 8, 1152, 900, 64, 18 },
{ 8, 1024, 768, 0, 0 },
{ 8, 800, 600, 16, 12 },
{ 8, 640, 480, 0, 0 },
{ 1, 1152, 900, 8, 18 },
{ 0 },
};
static int sbusfb_open(struct fb_info *info, int user);
static int sbusfb_release(struct fb_info *info, int user);
static int sbusfb_mmap(struct fb_info *info, struct file *file,
struct vm_area_struct *vma);
static int sbusfb_get_fix(struct fb_fix_screeninfo *fix, int con,
struct fb_info *info);
static int sbusfb_get_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int sbusfb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int sbusfb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info);
static int sbusfb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info);
static int sbusfb_ioctl(struct inode *inode, struct file *file, u_int cmd,
u_long arg, int con, struct fb_info *info);
static void sbusfb_cursor(struct display *p, int mode, int x, int y);
static void sbusfb_clear_margin(struct display *p, int s);
/*
* Interface to the low level console driver
*/
static int sbusfbcon_switch(int con, struct fb_info *info);
static int sbusfbcon_updatevar(int con, struct fb_info *info);
static void sbusfbcon_blank(int blank, struct fb_info *info);
/*
* Internal routines
*/
static int sbusfb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
u_int *transp, struct fb_info *info);
static int sbusfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info);
static void do_install_cmap(int con, struct fb_info *info);
static struct fb_ops sbusfb_ops = {
owner: THIS_MODULE,
fb_open: sbusfb_open,
fb_release: sbusfb_release,
fb_get_fix: sbusfb_get_fix,
fb_get_var: sbusfb_get_var,
fb_set_var: sbusfb_set_var,
fb_get_cmap: sbusfb_get_cmap,
fb_set_cmap: sbusfb_set_cmap,
fb_ioctl: sbusfb_ioctl,
fb_mmap: sbusfb_mmap,
};
/*
* Open/Release the frame buffer device
*/
static int sbusfb_open(struct fb_info *info, int user)
{
struct fb_info_sbusfb *fb = sbusfbinfo(info);
if (user) {
if (fb->open == 0) {
fb->mmaped = 0;
fb->vtconsole = -1;
}
fb->open++;
} else
fb->consolecnt++;
return 0;
}
static int sbusfb_release(struct fb_info *info, int user)
{
struct fb_info_sbusfb *fb = sbusfbinfo(info);
if (user) {
fb->open--;
if (fb->open == 0) {
if (fb->vtconsole != -1) {
vt_cons[fb->vtconsole]->vc_mode = KD_TEXT;
if (fb->mmaped) {
fb->graphmode--;
sbusfb_clear_margin(&fb_display[fb->vtconsole], 0);
}
}
if (fb->reset)
fb->reset(fb);
}
} else
fb->consolecnt--;
return 0;
}
static unsigned long sbusfb_mmapsize(struct fb_info_sbusfb *fb, long size)
{
if (size == SBUS_MMAP_EMPTY) return 0;
if (size >= 0) return size;
return fb->type.fb_size * (-size);
}
static int sbusfb_mmap(struct fb_info *info, struct file *file,
struct vm_area_struct *vma)
{
struct fb_info_sbusfb *fb = sbusfbinfo(info);
unsigned int size, page, r, map_size;
unsigned long map_offset = 0;
unsigned long off;
int i;
size = vma->vm_end - vma->vm_start;
if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
return -EINVAL;
off = vma->vm_pgoff << PAGE_SHIFT;
/* To stop the swapper from even considering these pages */
vma->vm_flags |= (VM_SHM| VM_LOCKED);
/* Each page, see which map applies */
for (page = 0; page < size; ){
map_size = 0;
for (i = 0; fb->mmap_map[i].size; i++)
if (fb->mmap_map[i].voff == off+page) {
map_size = sbusfb_mmapsize(fb,fb->mmap_map[i].size);
#ifdef __sparc_v9__
#define POFF_MASK (PAGE_MASK|0x1UL)
#else
#define POFF_MASK (PAGE_MASK)
#endif
map_offset = (fb->physbase + fb->mmap_map[i].poff) & POFF_MASK;
break;
}
if (!map_size){
page += PAGE_SIZE;
continue;
}
if (page + map_size > size)
map_size = size - page;
r = io_remap_page_range (vma->vm_start+page, map_offset, map_size, vma->vm_page_prot, fb->iospace);
if (r)
return -EAGAIN;
page += map_size;
}
vma->vm_flags |= VM_IO;
if (!fb->mmaped) {
int lastconsole = 0;
if (info->display_fg)
lastconsole = info->display_fg->vc_num;
fb->mmaped = 1;
if (fb->consolecnt && fb_display[lastconsole].fb_info == info) {
fb->vtconsole = lastconsole;
fb->graphmode++;
vt_cons [lastconsole]->vc_mode = KD_GRAPHICS;
vc_cons[lastconsole].d->vc_sw->con_cursor(vc_cons[lastconsole].d,CM_ERASE);
} else if (fb->unblank && !fb->blanked)
(*fb->unblank)(fb);
}
return 0;
}
static void sbusfb_clear_margin(struct display *p, int s)
{
struct fb_info_sbusfb *fb = sbusfbinfod(p);
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 = p->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;
fb_memset255 (fb_base, skip_bytes - fb->x_margin / 8);
fb_memset255 (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++)
fb_memset255 (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 sbusfb_disp_setup(struct display *p)
{
struct fb_info_sbusfb *fb = sbusfbinfod(p);
if (fb->setup)
fb->setup(p);
sbusfb_clear_margin(p, 0);
}
/*
* Get the Fixed Part of the Display
*/
static int sbusfb_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 sbusfb_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 sbusfb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info)
{
struct display *display;
int activate = var->activate;
if(con >= 0)
display = &fb_display[con];
else
display = info->disp;
/* simple check for equality until fully implemented -E */
if ((activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
if (display->var.xres != var->xres ||
display->var.yres != var->yres ||
display->var.xres_virtual != var->xres_virtual ||
display->var.yres_virtual != var->yres_virtual ||
display->var.bits_per_pixel != var->bits_per_pixel ||
display->var.accel_flags != var->accel_flags) {
return -EINVAL;
}
}
return 0;
}
/*
* Hardware cursor
*/
static int sbus_hw_scursor (struct fbcursor *cursor, struct fb_info_sbusfb *fb)
{
int op;
int i, bytes = 0;
struct fbcursor f;
char red[2], green[2], blue[2];
if (copy_from_user (&f, cursor, sizeof(struct fbcursor)))
return -EFAULT;
op = f.set;
if (op & FB_CUR_SETSHAPE){
if ((u32) f.size.fbx > fb->cursor.hwsize.fbx)
return -EINVAL;
if ((u32) f.size.fby > fb->cursor.hwsize.fby)
return -EINVAL;
if (f.size.fbx > 32)
bytes = f.size.fby << 3;
else
bytes = f.size.fby << 2;
}
if (op & FB_CUR_SETCMAP){
if (f.cmap.index || f.cmap.count != 2)
return -EINVAL;
if (copy_from_user (red, f.cmap.red, 2) ||
copy_from_user (green, f.cmap.green, 2) ||
copy_from_user (blue, f.cmap.blue, 2))
return -EFAULT;
}
if (op & FB_CUR_SETCMAP)
(*fb->setcursormap) (fb, red, green, blue);
if (op & FB_CUR_SETSHAPE){
u32 u;
fb->cursor.size = f.size;
memset ((void *)&fb->cursor.bits, 0, sizeof (fb->cursor.bits));
if (copy_from_user (fb->cursor.bits [0], f.mask, bytes) ||
copy_from_user (fb->cursor.bits [1], f.image, bytes))
return -EFAULT;
if (f.size.fbx <= 32) {
u = 0xffffffff << (32 - f.size.fbx);
for (i = fb->cursor.size.fby - 1; i >= 0; i--) {
fb->cursor.bits [0][i] &= u;
fb->cursor.bits [1][i] &= fb->cursor.bits [0][i];
}
} else {
u = 0xffffffff << (64 - f.size.fbx);
for (i = fb->cursor.size.fby - 1; i >= 0; i--) {
fb->cursor.bits [0][2*i+1] &= u;
fb->cursor.bits [1][2*i] &= fb->cursor.bits [0][2*i];
fb->cursor.bits [1][2*i+1] &= fb->cursor.bits [0][2*i+1];
}
}
(*fb->setcurshape) (fb);
}
if (op & (FB_CUR_SETCUR | FB_CUR_SETPOS | FB_CUR_SETHOT)){
if (op & FB_CUR_SETCUR)
fb->cursor.enable = f.enable;
if (op & FB_CUR_SETPOS)
fb->cursor.cpos = f.pos;
if (op & FB_CUR_SETHOT)
fb->cursor.chot = f.hot;
(*fb->setcursor) (fb);
}
return 0;
}
static unsigned char hw_cursor_cmap[2] = { 0, 0xff };
static void
sbusfb_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 sbusfb_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 sbusfb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info)
{
if (!info->display_fg || con == info->display_fg->vc_num) /* current console? */
return fb_get_cmap(cmap, kspc, sbusfb_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 sbusfb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info)
{
int err;
struct display *disp;
if (con >= 0)
disp = &fb_display[con];
else
disp = info->disp;
if (!disp->cmap.len) { /* no colormap allocated? */
if ((err = fb_alloc_cmap(&disp->cmap, 1<<disp->var.bits_per_pixel, 0)))
return err;
}
if (con == currcon) { /* current console? */
err = fb_set_cmap(cmap, kspc, sbusfb_setcolreg, 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, &disp->cmap, kspc ? 0 : 1);
return 0;
}
static int sbusfb_ioctl(struct inode *inode, struct file *file, u_int cmd,
u_long arg, int con, struct fb_info *info)
{
struct fb_info_sbusfb *fb = sbusfbinfo(info);
int i;
int lastconsole;
switch (cmd){
case FBIOGTYPE: /* return frame buffer type */
if (copy_to_user((struct fbtype *)arg, &fb->type, sizeof(struct fbtype)))
return -EFAULT;
break;
case FBIOGATTR: {
struct fbgattr *fba = (struct fbgattr *) arg;
i = verify_area (VERIFY_WRITE, (void *) arg, sizeof (struct fbgattr));
if (i) return i;
if (__put_user(fb->emulations[0], &fba->real_type) ||
__put_user(0, &fba->owner) ||
__copy_to_user(&fba->fbtype, &fb->type,
sizeof(struct fbtype)) ||
__put_user(0, &fba->sattr.flags) ||
__put_user(fb->type.fb_type, &fba->sattr.emu_type) ||
__put_user(-1, &fba->sattr.dev_specific[0]))
return -EFAULT;
for (i = 0; i < 4; i++) {
if (put_user(fb->emulations[i], &fba->emu_types[i]))
return -EFAULT;
}
break;
}
case FBIOSATTR:
i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbsattr));
if (i) return i;
return -EINVAL;
case FBIOSVIDEO:
if (fb->consolecnt) {
lastconsole = info->display_fg->vc_num;
if (vt_cons[lastconsole]->vc_mode == KD_TEXT)
break;
}
if (get_user(i, (int *)arg))
return -EFAULT;
if (i){
if (!fb->blanked || !fb->unblank)
break;
if (fb->consolecnt || (fb->open && fb->mmaped))
(*fb->unblank)(fb);
fb->blanked = 0;
} else {
if (fb->blanked || !fb->blank)
break;
(*fb->blank)(fb);
fb->blanked = 1;
}
break;
case FBIOGVIDEO:
if (put_user(fb->blanked, (int *) arg))
return -EFAULT;
break;
case FBIOGETCMAP_SPARC: {
char *rp, *gp, *bp;
int end, count, index;
struct fbcmap *cmap;
if (!fb->loadcmap)
return -EINVAL;
i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbcmap));
if (i) return i;
cmap = (struct fbcmap *) arg;
if (__get_user(count, &cmap->count) ||
__get_user(index, &cmap->index))
return -EFAULT;
if ((index < 0) || (index > 255))
return -EINVAL;
if (index + count > 256)
count = 256 - index;
if (__get_user(rp, &cmap->red) ||
__get_user(gp, &cmap->green) ||
__get_user(bp, &cmap->blue))
return -EFAULT;
if (verify_area (VERIFY_WRITE, rp, count))
return -EFAULT;
if (verify_area (VERIFY_WRITE, gp, count))
return -EFAULT;
if (verify_area (VERIFY_WRITE, bp, count))
return -EFAULT;
end = index + count;
for (i = index; i < end; i++){
if (__put_user(fb->color_map CM(i,0), rp) ||
__put_user(fb->color_map CM(i,1), gp) ||
__put_user(fb->color_map CM(i,2), bp))
return -EFAULT;
rp++; gp++; bp++;
}
(*fb->loadcmap)(fb, NULL, index, count);
break;
}
case FBIOPUTCMAP_SPARC: { /* load color map entries */
char *rp, *gp, *bp;
int end, count, index;
struct fbcmap *cmap;
if (!fb->loadcmap || !fb->color_map)
return -EINVAL;
i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbcmap));
if (i) return i;
cmap = (struct fbcmap *) arg;
if (__get_user(count, &cmap->count) ||
__get_user(index, &cmap->index))
return -EFAULT;
if ((index < 0) || (index > 255))
return -EINVAL;
if (index + count > 256)
count = 256 - index;
if (__get_user(rp, &cmap->red) ||
__get_user(gp, &cmap->green) ||
__get_user(bp, &cmap->blue))
return -EFAULT;
if (verify_area (VERIFY_READ, rp, count))
return -EFAULT;
if (verify_area (VERIFY_READ, gp, count))
return -EFAULT;
if (verify_area (VERIFY_READ, bp, count))
return -EFAULT;
end = index + count;
for (i = index; i < end; i++){
if (__get_user(fb->color_map CM(i,0), rp))
return -EFAULT;
if (__get_user(fb->color_map CM(i,1), gp))
return -EFAULT;
if (__get_user(fb->color_map CM(i,2), bp))
return -EFAULT;
rp++; gp++; bp++;
}
(*fb->loadcmap)(fb, NULL, index, count);
break;
}
case FBIOGCURMAX: {
struct fbcurpos *p = (struct fbcurpos *) arg;
if (!fb->setcursor) return -EINVAL;
if(verify_area (VERIFY_WRITE, p, sizeof (struct fbcurpos)))
return -EFAULT;
if (__put_user(fb->cursor.hwsize.fbx, &p->fbx) ||
__put_user(fb->cursor.hwsize.fby, &p->fby))
return -EFAULT;
break;
}
case FBIOSCURSOR:
if (!fb->setcursor) return -EINVAL;
if (fb->consolecnt) {
lastconsole = info->display_fg->vc_num;
if (vt_cons[lastconsole]->vc_mode == KD_TEXT)
return -EINVAL; /* Don't let graphics programs hide our nice text cursor */
fb->cursor.mode = CURSOR_SHAPE; /* Forget state of our text cursor */
}
return sbus_hw_scursor ((struct fbcursor *) arg, fb);
case FBIOSCURPOS:
if (!fb->setcursor) return -EINVAL;
/* Don't let graphics programs move our nice text cursor */
if (fb->consolecnt) {
lastconsole = info->display_fg->vc_num;
if (vt_cons[lastconsole]->vc_mode == KD_TEXT)
return -EINVAL; /* Don't let graphics programs move our nice text cursor */
}
if (copy_from_user(&fb->cursor.cpos, (void *)arg, sizeof(struct fbcurpos)))
return -EFAULT;
(*fb->setcursor) (fb);
break;
default:
if (fb->ioctl)
return fb->ioctl(fb, cmd, arg);
return -EINVAL;
}
return 0;
}
/*
* Setup: parse used options
*/
int __init sbusfb_setup(char *options)
{
char *p;
for (p = options;;) {
if (!strncmp(p, "nomargins", 9)) {
defx_margin = 0; defy_margin = 0;
} else if (!strncmp(p, "margins=", 8)) {
int i, j;
char *q;
i = simple_strtoul(p+8,&q,10);
if (i >= 0 && *q == 'x') {
j = simple_strtoul(q+1,&q,10);
if (j >= 0 && (*q == ' ' || !*q)) {
defx_margin = i; defy_margin = j;
}
}
} else 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 0;
}
static int sbusfbcon_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[currcon].cmap.len)
fb_get_cmap(&fb_display[currcon].cmap, 1, sbusfb_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;
sbusfb_clear_margin(&fb_display[con], 0);
}
currcon = con;
/* Install new colormap */
do_install_cmap(con, info);
return 0;
}
/*
* Update the `var' structure (called by fbcon.c)
*/
static int sbusfbcon_updatevar(int con, struct fb_info *info)
{
/* Nothing */
return 0;
}
/*
* Blank the display.
*/
static void sbusfbcon_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);
}
/*
* Read a single color register and split it into
* colors/transparent. Return != 0 for invalid regno.
*/
static int sbusfb_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 sbusfb_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 void do_install_cmap(int con, struct fb_info *info)
{
struct fb_info_sbusfb *fb = sbusfbinfo(info);
if (con != currcon)
return;
if (fb_display[con].cmap.len)
fb_set_cmap(&fb_display[con].cmap, 1, sbusfb_setcolreg, info);
else
fb_set_cmap(fb_default_cmap(1<<fb_display[con].var.bits_per_pixel),
1, sbusfb_setcolreg, info);
if (fb->loadcmap)
(*fb->loadcmap)(fb, &fb_display[con], 0, 256);
}
static int sbusfb_set_font(struct display *p, int width, int height)
{
int margin;
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 = 0;
y_margin = 0;
if (defx_margin < 0 || defy_margin < 0) {
for (margin = 0; def_margins[margin].depth; margin++)
if (w == def_margins[margin].xres &&
h == def_margins[margin].yres &&
depth == def_margins[margin].depth) {
x_margin = def_margins[margin].x_margin;
y_margin = def_margins[margin].y_margin;
break;
}
} else {
x_margin = defx_margin;
y_margin = defy_margin;
}
x_margin += ((w - 2*x_margin) % width) / 2;
y_margin += ((h - 2*y_margin) % 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;
sbusfb_clear_margin(p, 0);
}
return 1;
}
void sbusfb_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 == sbusfb_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 (vt_cons[i]->vc_mode != KD_GRAPHICS)
vc_cons[i].d->vc_sw->con_set_palette(vc_cons[i].d, color_table);
}
}
}
}
/*
* Initialisation
*/
extern void (*prom_palette)(int);
static void __init sbusfb_init_fb(int node, int parent, int fbtype,
struct sbus_dev *sbdp)
{
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;
int margin;
fb = kmalloc(sizeof(struct fb_info_sbusfb), GFP_ATOMIC);
if (!fb) {
prom_printf("Could not allocate sbusfb structure\n");
return;
}
if (!prom_palette)
prom_palette = sbusfb_palette;
memset(fb, 0, sizeof(struct fb_info_sbusfb));
fix = &fb->fix;
var = &fb->var;
disp = &fb->disp;
type = &fb->type;
spin_lock_init(&fb->lock);
fb->prom_node = node;
fb->prom_parent = parent;
fb->sbdp = sbdp;
if (sbdp)
fb->iospace = sbdp->reg_addrs[0].which_io;
type->fb_type = fbtype;
memset(&fb->emulations, 0xff, sizeof(fb->emulations));
fb->emulations[0] = fbtype;
#ifndef __sparc_v9__
disp->screen_base = (unsigned char *)prom_getintdefault(node, "address", 0);
#endif
type->fb_height = h = prom_getintdefault(node, "height", 900);
type->fb_width = w = prom_getintdefault(node, "width", 1152);
sizechange:
type->fb_depth = depth = (fbtype == FBTYPE_SUN2BW) ? 1 : 8;
linebytes = prom_getintdefault(node, "linebytes", w * depth / 8);
type->fb_size = PAGE_ALIGN((linebytes) * h);
if (defx_margin < 0 || defy_margin < 0) {
for (margin = 0; def_margins[margin].depth; margin++)
if (w == def_margins[margin].xres &&
h == def_margins[margin].yres &&
depth == def_margins[margin].depth) {
fb->x_margin = def_margins[margin].x_margin;
fb->y_margin = def_margins[margin].y_margin;
break;
}
} else {
fb->x_margin = defx_margin;
fb->y_margin = defy_margin;
}
fb->x_margin += ((w - 2*fb->x_margin) & 7) / 2;
fb->y_margin += ((h - 2*fb->y_margin) & 15) / 2;
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.node = -1;
fb->info.fbops = &sbusfb_ops;
fb->info.disp = disp;
strcpy(fb->info.fontname, fontname);
fb->info.changevar = NULL;
fb->info.switch_con = &sbusfbcon_switch;
fb->info.updatevar = &sbusfbcon_updatevar;
fb->info.blank = &sbusfbcon_blank;
fb->info.flags = FBINFO_FLAG_DEFAULT;
fb->cursor.hwsize.fbx = 32;
fb->cursor.hwsize.fby = 32;
if (depth > 1 && !fb->color_map)
fb->color_map = kmalloc(256 * 3, GFP_ATOMIC);
switch(fbtype) {
#ifdef CONFIG_FB_CREATOR
case FBTYPE_CREATOR:
p = creatorfb_init(fb); break;
#endif
#ifdef CONFIG_FB_CGSIX
case FBTYPE_SUNFAST_COLOR:
p = cgsixfb_init(fb); break;
#endif
#ifdef CONFIG_FB_CGTHREE
case FBTYPE_SUN3COLOR:
p = cgthreefb_init(fb); break;
#endif
#ifdef CONFIG_FB_TCX
case FBTYPE_TCXCOLOR:
p = tcxfb_init(fb); break;
#endif
#ifdef CONFIG_FB_LEO
case FBTYPE_SUNLEO:
p = leofb_init(fb); break;
#endif
#ifdef CONFIG_FB_BWTWO
case FBTYPE_SUN2BW:
p = bwtwofb_init(fb); break;
#endif
#ifdef CONFIG_FB_CGFOURTEEN
case FBTYPE_MDICOLOR:
p = cgfourteenfb_init(fb); break;
#endif
#ifdef CONFIG_FB_P9100
case FBTYPE_P9100COLOR:
/* Temporary crock. For now we are a cg3 */
p = p9100fb_init(fb); type->fb_type = FBTYPE_SUN3COLOR; break;
#endif
}
if (!p) {
if (fb->color_map)
kfree(fb->color_map);
kfree(fb);
return;
}
if (p == SBUSFBINIT_SIZECHANGE)
goto sizechange;
disp->dispsw = &fb->dispsw;
if (fb->setcursor) {
fb->dispsw.cursor = sbusfb_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 = sbusfb_cursor_timer_handler;
add_timer(&fb->cursor.timer);
}
}
fb->cursor.mode = CURSOR_SHAPE;
fb->dispsw.set_font = sbusfb_set_font;
fb->setup = fb->dispsw.setup;
fb->dispsw.setup = sbusfb_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;
sbusfb_set_var(var, -1, &fb->info);
if (register_framebuffer(&fb->info) < 0) {
if (fb->color_map)
kfree(fb->color_map);
kfree(fb);
return;
}
printk(KERN_INFO "fb%d: %s\n", GET_FB_IDX(fb->info.node), p);
}
static inline int known_card(char *name)
{
char *p;
for (p = name; *p && *p != ','; p++);
if (*p == ',') name = p + 1;
if (!strcmp(name, "cgsix") || !strcmp(name, "cgthree+"))
return FBTYPE_SUNFAST_COLOR;
if (!strcmp(name, "cgthree") || !strcmp(name, "cgRDI"))
return FBTYPE_SUN3COLOR;
if (!strcmp(name, "cgfourteen"))
return FBTYPE_MDICOLOR;
if (!strcmp(name, "leo"))
return FBTYPE_SUNLEO;
if (!strcmp(name, "bwtwo"))
return FBTYPE_SUN2BW;
if (!strcmp(name, "tcx"))
return FBTYPE_TCXCOLOR;
if (!strcmp(name, "p9100"))
return FBTYPE_P9100COLOR;
return FBTYPE_NOTYPE;
}
#ifdef CONFIG_FB_CREATOR
static void creator_fb_scan_siblings(int root)
{
int node, child;
child = prom_getchild(root);
for (node = prom_searchsiblings(child, "SUNW,ffb"); node;
node = prom_searchsiblings(prom_getsibling(node), "SUNW,ffb"))
sbusfb_init_fb(node, root, FBTYPE_CREATOR, NULL);
for (node = prom_searchsiblings(child, "SUNW,afb"); node;
node = prom_searchsiblings(prom_getsibling(node), "SUNW,afb"))
sbusfb_init_fb(node, root, FBTYPE_CREATOR, NULL);
}
static void creator_fb_scan(void)
{
int root;
creator_fb_scan_siblings(prom_root_node);
root = prom_getchild(prom_root_node);
for (root = prom_searchsiblings(root, "upa"); root;
root = prom_searchsiblings(prom_getsibling(root), "upa"))
creator_fb_scan_siblings(root);
}
#endif
int __init sbusfb_init(void)
{
int type;
struct sbus_dev *sbdp;
struct sbus_bus *sbus;
char prom_name[40];
extern int con_is_present(void);
if (!con_is_present()) return -ENXIO;
#ifdef CONFIG_FB_CREATOR
creator_fb_scan();
#endif
#ifdef CONFIG_SUN4
sbusfb_init_fb(0, 0, FBTYPE_SUN2BW, NULL);
#endif
#if defined(CONFIG_FB_CGFOURTEEN) && !defined(__sparc_v9__)
{
int root, node;
root = prom_getchild(prom_root_node);
root = prom_searchsiblings(root, "obio");
if (root &&
(node = prom_searchsiblings(prom_getchild(root), "cgfourteen"))) {
sbusfb_init_fb(node, root, FBTYPE_MDICOLOR, NULL);
}
}
#endif
if (sbus_root == NULL)
return 0;
for_all_sbusdev(sbdp, sbus) {
type = known_card(sbdp->prom_name);
if (type == FBTYPE_NOTYPE)
continue;
if (prom_getproperty(sbdp->prom_node, "emulation",
prom_name, sizeof(prom_name)) > 0) {
type = known_card(prom_name);
if (type == FBTYPE_NOTYPE)
type = known_card(sbdp->prom_name);
}
sbusfb_init_fb(sbdp->prom_node, sbdp->bus->prom_node, type, sbdp);
}
return 0;
}
MODULE_LICENSE("GPL");
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