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/*
* linux/drivers/video/fbcon.c -- Low level frame buffer based console driver
*
* Copyright (C) 1995 Geert Uytterhoeven
*
*
* This file is based on the original Amiga console driver (amicon.c):
*
* Copyright (C) 1993 Hamish Macdonald
* Greg Harp
* Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
*
* with work by William Rucklidge (wjr@cs.cornell.edu)
* Geert Uytterhoeven
* Jes Sorensen (jds@kom.auc.dk)
* Martin Apel
*
* and on the original Atari console driver (atacon.c):
*
* Copyright (C) 1993 Bjoern Brauel
* Roman Hodek
*
* with work by Guenther Kelleter
* Martin Schaller
* Andreas Schwab
*
* Hardware cursor support added by Emmanuel Marty (core@ggi-project.org)
* Smart redraw scrolling, arbitrary font width support, 512char font support
* and software scrollback added by
* Jakub Jelinek (jj@ultra.linux.cz)
*
* Random hacking by Martin Mares <mj@ucw.cz>
*
* 2001 - Documented with DocBook
* - Brad Douglas <brad@neruo.com>
*
* The low level operations for the various display memory organizations are
* now in separate source files.
*
* Currently the following organizations are supported:
*
* o afb Amiga bitplanes
* o cfb{2,4,8,16,24,32} Packed pixels
* o ilbm Amiga interleaved bitplanes
* o iplan2p[248] Atari interleaved bitplanes
* o mfb Monochrome
* o vga VGA characters/attributes
*
* To do:
*
* - Implement 16 plane mode (iplan2p16)
*
*
* 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.
*/
#undef FBCONDEBUG
#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/delay.h> /* MSch: for IRQ probe */
#include <linux/tty.h>
#include <linux/console.h>
#include <linux/string.h>
#include <linux/kd.h>
#include <linux/slab.h>
#include <linux/fb.h>
#include <linux/vt_kern.h>
#include <linux/selection.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/pm.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#ifdef CONFIG_AMIGA
#include <asm/amigahw.h>
#include <asm/amigaints.h>
#endif /* CONFIG_AMIGA */
#ifdef CONFIG_ATARI
#include <asm/atariints.h>
#endif
#ifdef CONFIG_MAC
#include <asm/macints.h>
#endif
#if defined(__mc68000__) || defined(CONFIG_APUS)
#include <asm/machdep.h>
#include <asm/setup.h>
#endif
#ifdef CONFIG_FBCON_VGA_PLANES
#include <asm/io.h>
#endif
#define INCLUDE_LINUX_LOGO_DATA
#include <asm/linux_logo.h>
#include <video/fbcon.h>
#include <video/fbcon-mac.h> /* for 6x11 font on mac */
#include <video/font.h>
#ifdef FBCONDEBUG
# define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
#else
# define DPRINTK(fmt, args...)
#endif
#define LOGO_H 80
#define LOGO_W 80
#define LOGO_LINE (LOGO_W/8)
struct display fb_display[MAX_NR_CONSOLES];
char con2fb_map[MAX_NR_CONSOLES];
static int logo_lines;
static int logo_shown = -1;
/* Software scrollback */
int fbcon_softback_size = 32768;
static unsigned long softback_buf, softback_curr;
static unsigned long softback_in;
static unsigned long softback_top, softback_end;
static int softback_lines;
#define REFCOUNT(fd) (((int *)(fd))[-1])
#define FNTSIZE(fd) (((int *)(fd))[-2])
#define FNTCHARCNT(fd) (((int *)(fd))[-3])
#define FNTSUM(fd) (((int *)(fd))[-4])
#define FONT_EXTRA_WORDS 4
#define CM_SOFTBACK (8)
#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * conp->vc_size_row)
static void fbcon_free_font(struct display *);
static int fbcon_set_origin(struct vc_data *);
#ifdef CONFIG_PM
static int pm_fbcon_request(struct pm_dev *dev, pm_request_t rqst, void *data);
static struct pm_dev *pm_fbcon;
static int fbcon_sleeping;
#endif
/*
* Emmanuel: fbcon will now use a hardware cursor if the
* low-level driver provides a non-NULL dispsw->cursor pointer,
* in which case the hardware should do blinking, etc.
*
* if dispsw->cursor is NULL, use Atari alike software cursor
*/
static int cursor_drawn;
#define CURSOR_DRAW_DELAY (1)
/* # VBL ints between cursor state changes */
#define ARM_CURSOR_BLINK_RATE (10)
#define AMIGA_CURSOR_BLINK_RATE (20)
#define ATARI_CURSOR_BLINK_RATE (42)
#define MAC_CURSOR_BLINK_RATE (32)
#define DEFAULT_CURSOR_BLINK_RATE (20)
static int vbl_cursor_cnt;
static int cursor_on;
static int cursor_blink_rate;
static inline void cursor_undrawn(void)
{
vbl_cursor_cnt = 0;
cursor_drawn = 0;
}
#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
/*
* Interface used by the world
*/
static const char *fbcon_startup(void);
static void fbcon_init(struct vc_data *conp, int init);
static void fbcon_deinit(struct vc_data *conp);
static int fbcon_changevar(int con);
static void fbcon_clear(struct vc_data *conp, int sy, int sx, int height,
int width);
static void fbcon_putc(struct vc_data *conp, int c, int ypos, int xpos);
static void fbcon_putcs(struct vc_data *conp, const unsigned short *s, int count,
int ypos, int xpos);
static void fbcon_cursor(struct vc_data *conp, int mode);
static int fbcon_scroll(struct vc_data *conp, int t, int b, int dir,
int count);
static void fbcon_bmove(struct vc_data *conp, int sy, int sx, int dy, int dx,
int height, int width);
static int fbcon_switch(struct vc_data *conp);
static int fbcon_blank(struct vc_data *conp, int blank);
static int fbcon_font_op(struct vc_data *conp, struct console_font_op *op);
static int fbcon_set_palette(struct vc_data *conp, unsigned char *table);
static int fbcon_scrolldelta(struct vc_data *conp, int lines);
/*
* Internal routines
*/
static void fbcon_setup(int con, int init, int logo);
static __inline__ int real_y(struct display *p, int ypos);
static void fbcon_vbl_handler(int irq, void *dummy, struct pt_regs *fp);
static __inline__ void updatescrollmode(struct display *p);
static __inline__ void ywrap_up(int unit, struct vc_data *conp,
struct display *p, int count);
static __inline__ void ywrap_down(int unit, struct vc_data *conp,
struct display *p, int count);
static __inline__ void ypan_up(int unit, struct vc_data *conp,
struct display *p, int count);
static __inline__ void ypan_down(int unit, struct vc_data *conp,
struct display *p, int count);
static void fbcon_bmove_rec(struct display *p, int sy, int sx, int dy, int dx,
int height, int width, u_int y_break);
static int fbcon_show_logo(void);
#ifdef CONFIG_MAC
/*
* On the Macintoy, there may or may not be a working VBL int. We need to probe
*/
static int vbl_detected;
static void fbcon_vbl_detect(int irq, void *dummy, struct pt_regs *fp)
{
vbl_detected++;
}
#endif
static void cursor_timer_handler(unsigned long dev_addr);
static struct timer_list cursor_timer = {
function: cursor_timer_handler
};
static int use_timer_cursor;
static void cursor_timer_handler(unsigned long dev_addr)
{
fbcon_vbl_handler(0, NULL, NULL);
cursor_timer.expires = jiffies+HZ/50;
add_timer(&cursor_timer);
}
/**
* PROC_CONSOLE - find the attached tty or visible console
* @info: frame buffer info structure
*
* Finds the tty attached to the process or visible console if
* the process is not directly attached to a tty (e.g. remote
* user) for device @info.
*
* Returns -1 errno on error, or tty/visible console number
* on success.
*
*/
int PROC_CONSOLE(const struct fb_info *info)
{
int fgc;
if (info->display_fg != NULL)
fgc = info->display_fg->vc_num;
else
return -1;
if (!current->tty)
return fgc;
if (current->tty->driver.type != TTY_DRIVER_TYPE_CONSOLE)
/* XXX Should report error here? */
return fgc;
if (MINOR(current->tty->device) < 1)
return fgc;
return MINOR(current->tty->device) - 1;
}
/**
* set_all_vcs - set all virtual consoles to match
* @fbidx: frame buffer index (e.g. fb0, fb1, ...)
* @fb: frame buffer ops structure
* @var: frame buffer screen structure to set
* @info: frame buffer info structure
*
* Set all virtual consoles to match screen info set in @var
* for device @info.
*
* Returns negative errno on error, or zero on success.
*
*/
int set_all_vcs(int fbidx, struct fb_ops *fb, struct fb_var_screeninfo *var,
struct fb_info *info)
{
int unit, err;
var->activate |= FB_ACTIVATE_TEST;
err = fb->fb_set_var(var, PROC_CONSOLE(info), info);
var->activate &= ~FB_ACTIVATE_TEST;
if (err)
return err;
for (unit = 0; unit < MAX_NR_CONSOLES; unit++)
if (fb_display[unit].conp && con2fb_map[unit] == fbidx)
fb->fb_set_var(var, unit, info);
return 0;
}
/**
* set_con2fb_map - map console to frame buffer device
* @unit: virtual console number to map
* @newidx: frame buffer index to map virtual console to
*
* Maps a virtual console @unit to a frame buffer device
* @newidx.
*
*/
void set_con2fb_map(int unit, int newidx)
{
int oldidx = con2fb_map[unit];
struct fb_info *oldfb, *newfb;
struct vc_data *conp;
char *fontdata;
unsigned short fontwidth, fontheight, fontwidthlog, fontheightlog;
int userfont;
if (newidx != con2fb_map[unit]) {
oldfb = registered_fb[oldidx];
newfb = registered_fb[newidx];
if (newfb->fbops->owner)
__MOD_INC_USE_COUNT(newfb->fbops->owner);
if (newfb->fbops->fb_open && newfb->fbops->fb_open(newfb,0)) {
if (newfb->fbops->owner)
__MOD_DEC_USE_COUNT(newfb->fbops->owner);
return;
}
if (oldfb->fbops->fb_release)
oldfb->fbops->fb_release(oldfb,0);
if (oldfb->fbops->owner)
__MOD_DEC_USE_COUNT(oldfb->fbops->owner);
conp = fb_display[unit].conp;
fontdata = fb_display[unit].fontdata;
fontwidth = fb_display[unit]._fontwidth;
fontheight = fb_display[unit]._fontheight;
fontwidthlog = fb_display[unit]._fontwidthlog;
fontheightlog = fb_display[unit]._fontheightlog;
userfont = fb_display[unit].userfont;
con2fb_map[unit] = newidx;
fb_display[unit] = *(newfb->disp);
fb_display[unit].conp = conp;
fb_display[unit].fontdata = fontdata;
fb_display[unit]._fontwidth = fontwidth;
fb_display[unit]._fontheight = fontheight;
fb_display[unit]._fontwidthlog = fontwidthlog;
fb_display[unit]._fontheightlog = fontheightlog;
fb_display[unit].userfont = userfont;
fb_display[unit].fb_info = newfb;
if (conp)
conp->vc_display_fg = &newfb->display_fg;
if (!newfb->display_fg)
newfb->display_fg = conp;
if (!newfb->changevar)
newfb->changevar = oldfb->changevar;
/* tell console var has changed */
if (newfb->changevar)
newfb->changevar(unit);
}
}
/*
* Low Level Operations
*/
struct display_switch fbcon_dummy;
/* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
static const char *fbcon_startup(void)
{
const char *display_desc = "frame buffer device";
int irqres = 1;
static int done = 0;
/*
* If num_registered_fb is zero, this is a call for the dummy part.
* The frame buffer devices weren't initialized yet.
*/
if (!num_registered_fb || done)
return display_desc;
done = 1;
#ifdef CONFIG_AMIGA
if (MACH_IS_AMIGA) {
cursor_blink_rate = AMIGA_CURSOR_BLINK_RATE;
irqres = request_irq(IRQ_AMIGA_VERTB, fbcon_vbl_handler, 0,
"console/cursor", fbcon_vbl_handler);
}
#endif /* CONFIG_AMIGA */
#ifdef CONFIG_ATARI
if (MACH_IS_ATARI) {
cursor_blink_rate = ATARI_CURSOR_BLINK_RATE;
irqres = request_irq(IRQ_AUTO_4, fbcon_vbl_handler, IRQ_TYPE_PRIO,
"console/cursor", fbcon_vbl_handler);
}
#endif /* CONFIG_ATARI */
#ifdef CONFIG_MAC
/*
* On a Macintoy, the VBL interrupt may or may not be active.
* As interrupt based cursor is more reliable and race free, we
* probe for VBL interrupts.
*/
if (MACH_IS_MAC) {
int ct = 0;
/*
* Probe for VBL: set temp. handler ...
*/
irqres = request_irq(IRQ_MAC_VBL, fbcon_vbl_detect, 0,
"console/cursor", fbcon_vbl_detect);
vbl_detected = 0;
/*
* ... and spin for 20 ms ...
*/
while (!vbl_detected && ++ct<1000)
udelay(20);
if(ct==1000)
printk("fbcon_startup: No VBL detected, using timer based cursor.\n");
free_irq(IRQ_MAC_VBL, fbcon_vbl_detect);
if (vbl_detected) {
/*
* interrupt based cursor ok
*/
cursor_blink_rate = MAC_CURSOR_BLINK_RATE;
irqres = request_irq(IRQ_MAC_VBL, fbcon_vbl_handler, 0,
"console/cursor", fbcon_vbl_handler);
} else {
/*
* VBL not detected: fall through, use timer based cursor
*/
irqres = 1;
}
}
#endif /* CONFIG_MAC */
#if defined(__arm__) && defined(IRQ_VSYNCPULSE)
cursor_blink_rate = ARM_CURSOR_BLINK_RATE;
irqres = request_irq(IRQ_VSYNCPULSE, fbcon_vbl_handler, SA_SHIRQ,
"console/cursor", fbcon_vbl_handler);
#endif
if (irqres) {
use_timer_cursor = 1;
cursor_blink_rate = DEFAULT_CURSOR_BLINK_RATE;
cursor_timer.expires = jiffies+HZ/50;
add_timer(&cursor_timer);
}
#ifdef CONFIG_PM
pm_fbcon = pm_register(PM_SYS_DEV, PM_SYS_VGA, pm_fbcon_request);
#endif
return display_desc;
}
static void fbcon_init(struct vc_data *conp, int init)
{
int unit = conp->vc_num;
struct fb_info *info;
/* on which frame buffer will we open this console? */
info = registered_fb[(int)con2fb_map[unit]];
info->changevar = &fbcon_changevar;
fb_display[unit] = *(info->disp); /* copy from default */
DPRINTK("mode: %s\n",info->modename);
DPRINTK("visual: %d\n",fb_display[unit].visual);
DPRINTK("res: %dx%d-%d\n",fb_display[unit].var.xres,
fb_display[unit].var.yres,
fb_display[unit].var.bits_per_pixel);
fb_display[unit].conp = conp;
fb_display[unit].fb_info = info;
/* clear out the cmap so we don't have dangling pointers */
fb_display[unit].cmap.len = 0;
fb_display[unit].cmap.red = 0;
fb_display[unit].cmap.green = 0;
fb_display[unit].cmap.blue = 0;
fb_display[unit].cmap.transp = 0;
fbcon_setup(unit, init, !init);
/* Must be done after fbcon_setup to prevent excess updates */
conp->vc_display_fg = &info->display_fg;
if (!info->display_fg)
info->display_fg = conp;
}
static void fbcon_deinit(struct vc_data *conp)
{
int unit = conp->vc_num;
struct display *p = &fb_display[unit];
fbcon_free_font(p);
p->dispsw = &fbcon_dummy;
p->conp = 0;
}
static int fbcon_changevar(int con)
{
if (fb_display[con].conp)
fbcon_setup(con, 0, 0);
return 0;
}
static __inline__ void updatescrollmode(struct display *p)
{
int m;
if (p->scrollmode & __SCROLL_YFIXED)
return;
if (divides(p->ywrapstep, fontheight(p)) &&
divides(fontheight(p), p->var.yres_virtual))
m = __SCROLL_YWRAP;
else if (divides(p->ypanstep, fontheight(p)) &&
p->var.yres_virtual >= p->var.yres+fontheight(p))
m = __SCROLL_YPAN;
else if (p->scrollmode & __SCROLL_YNOMOVE)
m = __SCROLL_YREDRAW;
else
m = __SCROLL_YMOVE;
p->scrollmode = (p->scrollmode & ~__SCROLL_YMASK) | m;
}
static void fbcon_font_widths(struct display *p)
{
int i;
p->_fontwidthlog = 0;
for (i = 2; i <= 6; i++)
if (fontwidth(p) == (1 << i))
p->_fontwidthlog = i;
p->_fontheightlog = 0;
for (i = 2; i <= 6; i++)
if (fontheight(p) == (1 << i))
p->_fontheightlog = i;
}
#define fontwidthvalid(p,w) ((p)->dispsw->fontwidthmask & FONTWIDTH(w))
static void fbcon_setup(int con, int init, int logo)
{
struct display *p = &fb_display[con];
struct vc_data *conp = p->conp;
int nr_rows, nr_cols;
int old_rows, old_cols;
unsigned short *save = NULL, *r, *q;
int i, charcnt = 256;
struct fbcon_font_desc *font;
if (con != fg_console || (p->fb_info->flags & FBINFO_FLAG_MODULE) ||
p->type == FB_TYPE_TEXT)
logo = 0;
p->var.xoffset = p->var.yoffset = p->yscroll = 0; /* reset wrap/pan */
if (con == fg_console && p->type != FB_TYPE_TEXT) {
if (fbcon_softback_size) {
if (!softback_buf) {
softback_buf = (unsigned long)kmalloc(fbcon_softback_size, GFP_KERNEL);
if (!softback_buf) {
fbcon_softback_size = 0;
softback_top = 0;
}
}
} else {
if (softback_buf) {
kfree((void *)softback_buf);
softback_buf = 0;
softback_top = 0;
}
}
if (softback_buf)
softback_in = softback_top = softback_curr = softback_buf;
softback_lines = 0;
}
for (i = 0; i < MAX_NR_CONSOLES; i++)
if (i != con && fb_display[i].fb_info == p->fb_info &&
fb_display[i].conp && fb_display[i].fontdata)
break;
fbcon_free_font(p);
if (i < MAX_NR_CONSOLES) {
struct display *q = &fb_display[i];
if (fontwidthvalid(p,fontwidth(q))) {
/* If we are not the first console on this
fb, copy the font from that console */
p->_fontwidth = q->_fontwidth;
p->_fontheight = q->_fontheight;
p->_fontwidthlog = q->_fontwidthlog;
p->_fontheightlog = q->_fontheightlog;
p->fontdata = q->fontdata;
p->userfont = q->userfont;
if (p->userfont) {
REFCOUNT(p->fontdata)++;
charcnt = FNTCHARCNT(p->fontdata);
}
con_copy_unimap(con, i);
}
}
if (!p->fontdata) {
if (!p->fb_info->fontname[0] ||
!(font = fbcon_find_font(p->fb_info->fontname)))
font = fbcon_get_default_font(p->var.xres, p->var.yres);
p->_fontwidth = font->width;
p->_fontheight = font->height;
p->fontdata = font->data;
fbcon_font_widths(p);
}
if (!fontwidthvalid(p,fontwidth(p))) {
#ifdef CONFIG_MAC
if (MACH_IS_MAC)
/* ++Geert: hack to make 6x11 fonts work on mac */
p->dispsw = &fbcon_mac;
else
#endif
{
/* ++Geert: changed from panic() to `correct and continue' */
printk(KERN_ERR "fbcon_setup: No support for fontwidth %d\n", fontwidth(p));
p->dispsw = &fbcon_dummy;
}
}
if (p->dispsw->set_font)
p->dispsw->set_font(p, fontwidth(p), fontheight(p));
updatescrollmode(p);
old_cols = conp->vc_cols;
old_rows = conp->vc_rows;
nr_cols = p->var.xres/fontwidth(p);
nr_rows = p->var.yres/fontheight(p);
if (logo) {
/* Need to make room for the logo */
int cnt;
int step;
logo_lines = (LOGO_H + fontheight(p) - 1) / fontheight(p);
q = (unsigned short *)(conp->vc_origin + conp->vc_size_row * old_rows);
step = logo_lines * old_cols;
for (r = q - logo_lines * old_cols; r < q; r++)
if (scr_readw(r) != conp->vc_video_erase_char)
break;
if (r != q && nr_rows >= old_rows + logo_lines) {
save = kmalloc(logo_lines * nr_cols * 2, GFP_KERNEL);
if (save) {
int i = old_cols < nr_cols ? old_cols : nr_cols;
scr_memsetw(save, conp->vc_video_erase_char, logo_lines * nr_cols * 2);
r = q - step;
for (cnt = 0; cnt < logo_lines; cnt++, r += i)
scr_memcpyw(save + cnt * nr_cols, r, 2 * i);
r = q;
}
}
if (r == q) {
/* We can scroll screen down */
r = q - step - old_cols;
for (cnt = old_rows - logo_lines; cnt > 0; cnt--) {
scr_memcpyw(r + step, r, conp->vc_size_row);
r -= old_cols;
}
if (!save) {
conp->vc_y += logo_lines;
conp->vc_pos += logo_lines * conp->vc_size_row;
}
}
scr_memsetw((unsigned short *)conp->vc_origin,
conp->vc_video_erase_char,
conp->vc_size_row * logo_lines);
}
/*
* ++guenther: console.c:vc_allocate() relies on initializing
* vc_{cols,rows}, but we must not set those if we are only
* resizing the console.
*/
if (init) {
conp->vc_cols = nr_cols;
conp->vc_rows = nr_rows;
}
p->vrows = p->var.yres_virtual/fontheight(p);
if ((p->var.yres % fontheight(p)) &&
(p->var.yres_virtual % fontheight(p) < p->var.yres % fontheight(p)))
p->vrows--;
conp->vc_can_do_color = p->var.bits_per_pixel != 1;
conp->vc_complement_mask = conp->vc_can_do_color ? 0x7700 : 0x0800;
if (charcnt == 256) {
conp->vc_hi_font_mask = 0;
p->fgshift = 8;
p->bgshift = 12;
p->charmask = 0xff;
} else {
conp->vc_hi_font_mask = 0x100;
if (conp->vc_can_do_color)
conp->vc_complement_mask <<= 1;
p->fgshift = 9;
p->bgshift = 13;
p->charmask = 0x1ff;
}
if (p->dispsw == &fbcon_dummy)
printk(KERN_WARNING "fbcon_setup: type %d (aux %d, depth %d) not "
"supported\n", p->type, p->type_aux, p->var.bits_per_pixel);
p->dispsw->setup(p);
p->fgcol = p->var.bits_per_pixel > 2 ? 7 : (1<<p->var.bits_per_pixel)-1;
p->bgcol = 0;
if (!init) {
if (conp->vc_cols != nr_cols || conp->vc_rows != nr_rows)
vc_resize_con(nr_rows, nr_cols, con);
else if (CON_IS_VISIBLE(conp) &&
vt_cons[conp->vc_num]->vc_mode == KD_TEXT) {
if (p->dispsw->clear_margins)
p->dispsw->clear_margins(conp, p, 0);
update_screen(con);
}
if (save) {
q = (unsigned short *)(conp->vc_origin + conp->vc_size_row * old_rows);
scr_memcpyw(q, save, logo_lines * nr_cols * 2);
conp->vc_y += logo_lines;
conp->vc_pos += logo_lines * conp->vc_size_row;
kfree(save);
}
}
if (logo) {
logo_shown = -2;
conp->vc_top = logo_lines;
}
if (con == fg_console && softback_buf) {
int l = fbcon_softback_size / conp->vc_size_row;
if (l > 5)
softback_end = softback_buf + l * conp->vc_size_row;
else {
/* Smaller scrollback makes no sense, and 0 would screw
the operation totally */
softback_top = 0;
}
}
}
/* ====================================================================== */
/* fbcon_XXX routines - interface used by the world
*
* This system is now divided into two levels because of complications
* caused by hardware scrolling. Top level functions:
*
* fbcon_bmove(), fbcon_clear(), fbcon_putc()
*
* handles y values in range [0, scr_height-1] that correspond to real
* screen positions. y_wrap shift means that first line of bitmap may be
* anywhere on this display. These functions convert lineoffsets to
* bitmap offsets and deal with the wrap-around case by splitting blits.
*
* fbcon_bmove_physical_8() -- These functions fast implementations
* fbcon_clear_physical_8() -- of original fbcon_XXX fns.
* fbcon_putc_physical_8() -- (fontwidth != 8) may be added later
*
* WARNING:
*
* At the moment fbcon_putc() cannot blit across vertical wrap boundary
* Implies should only really hardware scroll in rows. Only reason for
* restriction is simplicity & efficiency at the moment.
*/
static __inline__ int real_y(struct display *p, int ypos)
{
int rows = p->vrows;
ypos += p->yscroll;
return ypos < rows ? ypos : ypos-rows;
}
static void fbcon_clear(struct vc_data *conp, int sy, int sx, int height,
int width)
{
int unit = conp->vc_num;
struct display *p = &fb_display[unit];
u_int y_break;
int redraw_cursor = 0;
if (!p->can_soft_blank && console_blanked)
return;
if (!height || !width)
return;
if ((sy <= p->cursor_y) && (p->cursor_y < sy+height) &&
(sx <= p->cursor_x) && (p->cursor_x < sx+width)) {
cursor_undrawn();
redraw_cursor = 1;
}
/* Split blits that cross physical y_wrap boundary */
y_break = p->vrows-p->yscroll;
if (sy < y_break && sy+height-1 >= y_break) {
u_int b = y_break-sy;
p->dispsw->clear(conp, p, real_y(p, sy), sx, b, width);
p->dispsw->clear(conp, p, real_y(p, sy+b), sx, height-b, width);
} else
p->dispsw->clear(conp, p, real_y(p, sy), sx, height, width);
if (redraw_cursor)
vbl_cursor_cnt = CURSOR_DRAW_DELAY;
}
static void fbcon_putc(struct vc_data *conp, int c, int ypos, int xpos)
{
int unit = conp->vc_num;
struct display *p = &fb_display[unit];
int redraw_cursor = 0;
if (!p->can_soft_blank && console_blanked)
return;
if (vt_cons[unit]->vc_mode != KD_TEXT)
return;
if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) {
cursor_undrawn();
redraw_cursor = 1;
}
p->dispsw->putc(conp, p, c, real_y(p, ypos), xpos);
if (redraw_cursor)
vbl_cursor_cnt = CURSOR_DRAW_DELAY;
}
static void fbcon_putcs(struct vc_data *conp, const unsigned short *s, int count,
int ypos, int xpos)
{
int unit = conp->vc_num;
struct display *p = &fb_display[unit];
int redraw_cursor = 0;
if (!p->can_soft_blank && console_blanked)
return;
if (vt_cons[unit]->vc_mode != KD_TEXT)
return;
if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) &&
(p->cursor_x < (xpos + count))) {
cursor_undrawn();
redraw_cursor = 1;
}
p->dispsw->putcs(conp, p, s, count, real_y(p, ypos), xpos);
if (redraw_cursor)
vbl_cursor_cnt = CURSOR_DRAW_DELAY;
}
static void fbcon_cursor(struct vc_data *conp, int mode)
{
int unit = conp->vc_num;
struct display *p = &fb_display[unit];
int y = conp->vc_y;
if (mode & CM_SOFTBACK) {
mode &= ~CM_SOFTBACK;
if (softback_lines) {
if (y + softback_lines >= conp->vc_rows)
mode = CM_ERASE;
else
y += softback_lines;
}
} else if (softback_lines)
fbcon_set_origin(conp);
/* do we have a hardware cursor ? */
if (p->dispsw->cursor) {
p->cursor_x = conp->vc_x;
p->cursor_y = y;
p->dispsw->cursor(p, mode, p->cursor_x, real_y(p, p->cursor_y));
return;
}
/* Avoid flickering if there's no real change. */
if (p->cursor_x == conp->vc_x && p->cursor_y == y &&
(mode == CM_ERASE) == !cursor_on)
return;
cursor_on = 0;
if (cursor_drawn)
p->dispsw->revc(p, p->cursor_x, real_y(p, p->cursor_y));
p->cursor_x = conp->vc_x;
p->cursor_y = y;
switch (mode) {
case CM_ERASE:
cursor_drawn = 0;
break;
case CM_MOVE:
case CM_DRAW:
if (cursor_drawn)
p->dispsw->revc(p, p->cursor_x, real_y(p, p->cursor_y));
vbl_cursor_cnt = CURSOR_DRAW_DELAY;
cursor_on = 1;
break;
}
}
static void fbcon_vbl_handler(int irq, void *dummy, struct pt_regs *fp)
{
struct display *p;
if (!cursor_on)
return;
if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) {
p = &fb_display[fg_console];
if (p->dispsw->revc)
p->dispsw->revc(p, p->cursor_x, real_y(p, p->cursor_y));
cursor_drawn ^= 1;
vbl_cursor_cnt = cursor_blink_rate;
}
}
static int scrollback_phys_max = 0;
static int scrollback_max = 0;
static int scrollback_current = 0;
static __inline__ void ywrap_up(int unit, struct vc_data *conp,
struct display *p, int count)
{
p->yscroll += count;
if (p->yscroll >= p->vrows) /* Deal with wrap */
p->yscroll -= p->vrows;
p->var.xoffset = 0;
p->var.yoffset = p->yscroll*fontheight(p);
p->var.vmode |= FB_VMODE_YWRAP;
p->fb_info->updatevar(unit, p->fb_info);
scrollback_max += count;
if (scrollback_max > scrollback_phys_max)
scrollback_max = scrollback_phys_max;
scrollback_current = 0;
}
static __inline__ void ywrap_down(int unit, struct vc_data *conp,
struct display *p, int count)
{
p->yscroll -= count;
if (p->yscroll < 0) /* Deal with wrap */
p->yscroll += p->vrows;
p->var.xoffset = 0;
p->var.yoffset = p->yscroll*fontheight(p);
p->var.vmode |= FB_VMODE_YWRAP;
p->fb_info->updatevar(unit, p->fb_info);
scrollback_max -= count;
if (scrollback_max < 0)
scrollback_max = 0;
scrollback_current = 0;
}
static __inline__ void ypan_up(int unit, struct vc_data *conp,
struct display *p, int count)
{
p->yscroll += count;
if (p->yscroll > p->vrows-conp->vc_rows) {
p->dispsw->bmove(p, p->vrows-conp->vc_rows, 0, 0, 0,
conp->vc_rows, conp->vc_cols);
p->yscroll -= p->vrows-conp->vc_rows;
}
p->var.xoffset = 0;
p->var.yoffset = p->yscroll*fontheight(p);
p->var.vmode &= ~FB_VMODE_YWRAP;
p->fb_info->updatevar(unit, p->fb_info);
if (p->dispsw->clear_margins)
p->dispsw->clear_margins(conp, p, 1);
scrollback_max += count;
if (scrollback_max > scrollback_phys_max)
scrollback_max = scrollback_phys_max;
scrollback_current = 0;
}
static __inline__ void ypan_down(int unit, struct vc_data *conp,
struct display *p, int count)
{
p->yscroll -= count;
if (p->yscroll < 0) {
p->dispsw->bmove(p, 0, 0, p->vrows-conp->vc_rows, 0,
conp->vc_rows, conp->vc_cols);
p->yscroll += p->vrows-conp->vc_rows;
}
p->var.xoffset = 0;
p->var.yoffset = p->yscroll*fontheight(p);
p->var.vmode &= ~FB_VMODE_YWRAP;
p->fb_info->updatevar(unit, p->fb_info);
if (p->dispsw->clear_margins)
p->dispsw->clear_margins(conp, p, 1);
scrollback_max -= count;
if (scrollback_max < 0)
scrollback_max = 0;
scrollback_current = 0;
}
static void fbcon_redraw_softback(struct vc_data *conp, struct display *p, long delta)
{
unsigned short *d, *s;
unsigned long n;
int line = 0;
int count = conp->vc_rows;
d = (u16 *)softback_curr;
if (d == (u16 *)softback_in)
d = (u16 *)conp->vc_origin;
n = softback_curr + delta * conp->vc_size_row;
softback_lines -= delta;
if (delta < 0) {
if (softback_curr < softback_top && n < softback_buf) {
n += softback_end - softback_buf;
if (n < softback_top) {
softback_lines -= (softback_top - n) / conp->vc_size_row;
n = softback_top;
}
} else if (softback_curr >= softback_top && n < softback_top) {
softback_lines -= (softback_top - n) / conp->vc_size_row;
n = softback_top;
}
} else {
if (softback_curr > softback_in && n >= softback_end) {
n += softback_buf - softback_end;
if (n > softback_in) {
n = softback_in;
softback_lines = 0;
}
} else if (softback_curr <= softback_in && n > softback_in) {
n = softback_in;
softback_lines = 0;
}
}
if (n == softback_curr)
return;
softback_curr = n;
s = (u16 *)softback_curr;
if (s == (u16 *)softback_in)
s = (u16 *)conp->vc_origin;
while (count--) {
unsigned short *start;
unsigned short *le;
unsigned short c;
int x = 0;
unsigned short attr = 1;
start = s;
le = advance_row(s, 1);
do {
c = scr_readw(s);
if (attr != (c & 0xff00)) {
attr = c & 0xff00;
if (s > start) {
p->dispsw->putcs(conp, p, start, s - start,
real_y(p, line), x);
x += s - start;
start = s;
}
}
if (c == scr_readw(d)) {
if (s > start) {
p->dispsw->putcs(conp, p, start, s - start,
real_y(p, line), x);
x += s - start + 1;
start = s + 1;
} else {
x++;
start++;
}
}
s++;
d++;
} while (s < le);
if (s > start)
p->dispsw->putcs(conp, p, start, s - start, real_y(p, line), x);
line++;
if (d == (u16 *)softback_end)
d = (u16 *)softback_buf;
if (d == (u16 *)softback_in)
d = (u16 *)conp->vc_origin;
if (s == (u16 *)softback_end)
s = (u16 *)softback_buf;
if (s == (u16 *)softback_in)
s = (u16 *)conp->vc_origin;
}
}
static void fbcon_redraw(struct vc_data *conp, struct display *p,
int line, int count, int offset)
{
unsigned short *d = (unsigned short *)
(conp->vc_origin + conp->vc_size_row * line);
unsigned short *s = d + offset;
while (count--) {
unsigned short *start = s;
unsigned short *le = advance_row(s, 1);
unsigned short c;
int x = 0;
unsigned short attr = 1;
do {
c = scr_readw(s);
if (attr != (c & 0xff00)) {
attr = c & 0xff00;
if (s > start) {
p->dispsw->putcs(conp, p, start, s - start,
real_y(p, line), x);
x += s - start;
start = s;
}
}
if (c == scr_readw(d)) {
if (s > start) {
p->dispsw->putcs(conp, p, start, s - start,
real_y(p, line), x);
x += s - start + 1;
start = s + 1;
} else {
x++;
start++;
}
}
scr_writew(c, d);
console_conditional_schedule();
s++;
d++;
} while (s < le);
if (s > start)
p->dispsw->putcs(conp, p, start, s - start, real_y(p, line), x);
console_conditional_schedule();
if (offset > 0)
line++;
else {
line--;
/* NOTE: We subtract two lines from these pointers */
s -= conp->vc_size_row;
d -= conp->vc_size_row;
}
}
}
/**
* fbcon_redraw_clear - clear area of the screen
* @conp: stucture pointing to current active virtual console
* @p: display structure
* @sy: starting Y coordinate
* @sx: starting X coordinate
* @height: height of area to clear
* @width: width of area to clear
*
* Clears a specified area of the screen. All dimensions are in
* pixels.
*
*/
void fbcon_redraw_clear(struct vc_data *conp, struct display *p, int sy, int sx,
int height, int width)
{
int x, y;
for (y=0; y<height; y++)
for (x=0; x<width; x++)
fbcon_putc(conp, ' ', sy+y, sx+x);
}
/**
* fbcon_redraw_bmove - copy area of screen to another area
* @p: display structure
* @sy: origin Y coordinate
* @sx: origin X coordinate
* @dy: destination Y coordinate
* @dx: destination X coordinate
* @h: height of area to copy
* @w: width of area to copy
*
* Copies an area of the screen to another area of the same screen.
* All dimensions are in pixels.
*
* Note that this function cannot be used together with ypan or
* ywrap.
*
*/
void fbcon_redraw_bmove(struct display *p, int sy, int sx, int dy, int dx, int h, int w)
{
if (sy != dy)
panic("fbcon_redraw_bmove width sy != dy");
/* h will be always 1, but it does not matter if we are more generic */
while (h-- > 0) {
struct vc_data *conp = p->conp;
unsigned short *d = (unsigned short *)
(conp->vc_origin + conp->vc_size_row * dy + dx * 2);
unsigned short *s = d + (dx - sx);
unsigned short *start = d;
unsigned short *ls = d;
unsigned short *le = d + w;
unsigned short c;
int x = dx;
unsigned short attr = 1;
do {
c = scr_readw(d);
if (attr != (c & 0xff00)) {
attr = c & 0xff00;
if (d > start) {
p->dispsw->putcs(conp, p, start, d - start, dy, x);
x += d - start;
start = d;
}
}
if (s >= ls && s < le && c == scr_readw(s)) {
if (d > start) {
p->dispsw->putcs(conp, p, start, d - start, dy, x);
x += d - start + 1;
start = d + 1;
} else {
x++;
start++;
}
}
s++;
d++;
} while (d < le);
if (d > start)
p->dispsw->putcs(conp, p, start, d - start, dy, x);
sy++;
dy++;
}
}
static inline void fbcon_softback_note(struct vc_data *conp, int t, int count)
{
unsigned short *p;
if (conp->vc_num != fg_console)
return;
p = (unsigned short *)(conp->vc_origin + t * conp->vc_size_row);
while (count) {
scr_memcpyw((u16 *)softback_in, p, conp->vc_size_row);
count--;
p = advance_row(p, 1);
softback_in += conp->vc_size_row;
if (softback_in == softback_end)
softback_in = softback_buf;
if (softback_in == softback_top) {
softback_top += conp->vc_size_row;
if (softback_top == softback_end)
softback_top = softback_buf;
}
}
softback_curr = softback_in;
}
static int fbcon_scroll(struct vc_data *conp, int t, int b, int dir,
int count)
{
int unit = conp->vc_num;
struct display *p = &fb_display[unit];
int scroll_partial = !(p->scrollmode & __SCROLL_YNOPARTIAL);
if (!p->can_soft_blank && console_blanked)
return 0;
if (!count || vt_cons[unit]->vc_mode != KD_TEXT)
return 0;
fbcon_cursor(conp, CM_ERASE);
/*
* ++Geert: Only use ywrap/ypan if the console is in text mode
* ++Andrew: Only use ypan on hardware text mode when scrolling the
* whole screen (prevents flicker).
*/
switch (dir) {
case SM_UP:
if (count > conp->vc_rows) /* Maximum realistic size */
count = conp->vc_rows;
if (softback_top)
fbcon_softback_note(conp, t, count);
if (logo_shown >= 0) goto redraw_up;
switch (p->scrollmode & __SCROLL_YMASK) {
case __SCROLL_YMOVE:
p->dispsw->bmove(p, t+count, 0, t, 0, b-t-count,
conp->vc_cols);
p->dispsw->clear(conp, p, b-count, 0, count,
conp->vc_cols);
break;
case __SCROLL_YWRAP:
if (b-t-count > 3*conp->vc_rows>>2) {
if (t > 0)
fbcon_bmove(conp, 0, 0, count, 0, t,
conp->vc_cols);
ywrap_up(unit, conp, p, count);
if (conp->vc_rows-b > 0)
fbcon_bmove(conp, b-count, 0, b, 0,
conp->vc_rows-b, conp->vc_cols);
} else if (p->scrollmode & __SCROLL_YPANREDRAW)
goto redraw_up;
else
fbcon_bmove(conp, t+count, 0, t, 0, b-t-count,
conp->vc_cols);
fbcon_clear(conp, b-count, 0, count, conp->vc_cols);
break;
case __SCROLL_YPAN:
if (( p->yscroll + count <= 2 * (p->vrows - conp->vc_rows)) &&
(( !scroll_partial && (b-t == conp->vc_rows)) ||
( scroll_partial && (b-t-count > 3*conp->vc_rows>>2)))) {
if (t > 0)
fbcon_bmove(conp, 0, 0, count, 0, t,
conp->vc_cols);
ypan_up(unit, conp, p, count);
if (conp->vc_rows-b > 0)
fbcon_bmove(conp, b-count, 0, b, 0,
conp->vc_rows-b, conp->vc_cols);
} else if (p->scrollmode & __SCROLL_YPANREDRAW)
goto redraw_up;
else
fbcon_bmove(conp, t+count, 0, t, 0, b-t-count,
conp->vc_cols);
fbcon_clear(conp, b-count, 0, count, conp->vc_cols);
break;
case __SCROLL_YREDRAW:
redraw_up:
fbcon_redraw(conp, p, t, b-t-count, count*conp->vc_cols);
p->dispsw->clear(conp, p, real_y(p, b-count), 0,
count, conp->vc_cols);
scr_memsetw((unsigned short *)(conp->vc_origin +
conp->vc_size_row * (b-count)),
conp->vc_video_erase_char,
conp->vc_size_row * count);
return 1;
}
break;
case SM_DOWN:
if (count > conp->vc_rows) /* Maximum realistic size */
count = conp->vc_rows;
switch (p->scrollmode & __SCROLL_YMASK) {
case __SCROLL_YMOVE:
p->dispsw->bmove(p, t, 0, t+count, 0, b-t-count,
conp->vc_cols);
p->dispsw->clear(conp, p, t, 0,
count, conp->vc_cols);
break;
case __SCROLL_YWRAP:
if (b-t-count > 3*conp->vc_rows>>2) {
if (conp->vc_rows-b > 0)
fbcon_bmove(conp, b, 0, b-count, 0,
conp->vc_rows-b, conp->vc_cols);
ywrap_down(unit, conp, p, count);
if (t > 0)
fbcon_bmove(conp, count, 0, 0, 0, t,
conp->vc_cols);
} else if (p->scrollmode & __SCROLL_YPANREDRAW)
goto redraw_down;
else
fbcon_bmove(conp, t, 0, t+count, 0, b-t-count,
conp->vc_cols);
fbcon_clear(conp, t, 0, count, conp->vc_cols);
break;
case __SCROLL_YPAN:
if (( count-p->yscroll <= p->vrows-conp->vc_rows) &&
(( !scroll_partial && (b-t == conp->vc_rows)) ||
( scroll_partial && (b-t-count > 3*conp->vc_rows>>2)))) {
if (conp->vc_rows-b > 0)
fbcon_bmove(conp, b, 0, b-count, 0,
conp->vc_rows-b, conp->vc_cols);
ypan_down(unit, conp, p, count);
if (t > 0)
fbcon_bmove(conp, count, 0, 0, 0, t,
conp->vc_cols);
} else if (p->scrollmode & __SCROLL_YPANREDRAW)
goto redraw_down;
else
fbcon_bmove(conp, t, 0, t+count, 0, b-t-count,
conp->vc_cols);
fbcon_clear(conp, t, 0, count, conp->vc_cols);
break;
case __SCROLL_YREDRAW:
redraw_down:
fbcon_redraw(conp, p, b - 1, b-t-count, -count*conp->vc_cols);
p->dispsw->clear(conp, p, real_y(p, t), 0,
count, conp->vc_cols);
scr_memsetw((unsigned short *)(conp->vc_origin +
conp->vc_size_row * t),
conp->vc_video_erase_char,
conp->vc_size_row * count);
return 1;
}
}
return 0;
}
static void fbcon_bmove(struct vc_data *conp, int sy, int sx, int dy, int dx,
int height, int width)
{
int unit = conp->vc_num;
struct display *p = &fb_display[unit];
if (!p->can_soft_blank && console_blanked)
return;
if (!width || !height)
return;
if (((sy <= p->cursor_y) && (p->cursor_y < sy+height) &&
(sx <= p->cursor_x) && (p->cursor_x < sx+width)) ||
((dy <= p->cursor_y) && (p->cursor_y < dy+height) &&
(dx <= p->cursor_x) && (p->cursor_x < dx+width)))
fbcon_cursor(conp, CM_ERASE|CM_SOFTBACK);
/* Split blits that cross physical y_wrap case.
* Pathological case involves 4 blits, better to use recursive
* code rather than unrolled case
*
* Recursive invocations don't need to erase the cursor over and
* over again, so we use fbcon_bmove_rec()
*/
fbcon_bmove_rec(p, sy, sx, dy, dx, height, width, p->vrows-p->yscroll);
}
static void fbcon_bmove_rec(struct display *p, int sy, int sx, int dy, int dx,
int height, int width, u_int y_break)
{
u_int b;
if (sy < y_break && sy+height > y_break) {
b = y_break-sy;
if (dy < sy) { /* Avoid trashing self */
fbcon_bmove_rec(p, sy, sx, dy, dx, b, width, y_break);
fbcon_bmove_rec(p, sy+b, sx, dy+b, dx, height-b, width, y_break);
} else {
fbcon_bmove_rec(p, sy+b, sx, dy+b, dx, height-b, width, y_break);
fbcon_bmove_rec(p, sy, sx, dy, dx, b, width, y_break);
}
return;
}
if (dy < y_break && dy+height > y_break) {
b = y_break-dy;
if (dy < sy) { /* Avoid trashing self */
fbcon_bmove_rec(p, sy, sx, dy, dx, b, width, y_break);
fbcon_bmove_rec(p, sy+b, sx, dy+b, dx, height-b, width, y_break);
} else {
fbcon_bmove_rec(p, sy+b, sx, dy+b, dx, height-b, width, y_break);
fbcon_bmove_rec(p, sy, sx, dy, dx, b, width, y_break);
}
return;
}
p->dispsw->bmove(p, real_y(p, sy), sx, real_y(p, dy), dx, height, width);
}
static int fbcon_switch(struct vc_data *conp)
{
int unit = conp->vc_num;
struct display *p = &fb_display[unit];
struct fb_info *info = p->fb_info;
if (softback_top) {
int l = fbcon_softback_size / conp->vc_size_row;
if (softback_lines)
fbcon_set_origin(conp);
softback_top = softback_curr = softback_in = softback_buf;
softback_lines = 0;
if (l > 5)
softback_end = softback_buf + l * conp->vc_size_row;
else {
/* Smaller scrollback makes no sense, and 0 would screw
the operation totally */
softback_top = 0;
}
}
if (logo_shown >= 0) {
struct vc_data *conp2 = vc_cons[logo_shown].d;
if (conp2->vc_top == logo_lines && conp2->vc_bottom == conp2->vc_rows)
conp2->vc_top = 0;
logo_shown = -1;
}
p->var.yoffset = p->yscroll = 0;
switch (p->scrollmode & __SCROLL_YMASK) {
case __SCROLL_YWRAP:
scrollback_phys_max = p->vrows-conp->vc_rows;
break;
case __SCROLL_YPAN:
scrollback_phys_max = p->vrows-2*conp->vc_rows;
if (scrollback_phys_max < 0)
scrollback_phys_max = 0;
break;
default:
scrollback_phys_max = 0;
break;
}
scrollback_max = 0;
scrollback_current = 0;
if (info && info->switch_con)
(*info->switch_con)(unit, info);
if (p->dispsw->clear_margins && vt_cons[unit]->vc_mode == KD_TEXT)
p->dispsw->clear_margins(conp, p, 0);
if (logo_shown == -2) {
logo_shown = fg_console;
fbcon_show_logo(); /* This is protected above by initmem_freed */
update_region(fg_console,
conp->vc_origin + conp->vc_size_row * conp->vc_top,
conp->vc_size_row * (conp->vc_bottom - conp->vc_top) / 2);
return 0;
}
return 1;
}
static int fbcon_blank(struct vc_data *conp, int blank)
{
struct display *p = &fb_display[conp->vc_num];
struct fb_info *info = p->fb_info;
if (blank < 0) /* Entering graphics mode */
return 0;
#ifdef CONFIG_PM
if (fbcon_sleeping)
return 0;
#endif /* CONFIG_PM */
fbcon_cursor(p->conp, blank ? CM_ERASE : CM_DRAW);
if (!p->can_soft_blank) {
if (blank) {
if (p->visual == FB_VISUAL_MONO01) {
if (p->screen_base)
fb_memset255(p->screen_base,
p->var.xres_virtual*p->var.yres_virtual*
p->var.bits_per_pixel>>3);
} else {
unsigned short oldc;
u_int height;
u_int y_break;
oldc = conp->vc_video_erase_char;
conp->vc_video_erase_char &= p->charmask;
height = conp->vc_rows;
y_break = p->vrows-p->yscroll;
if (height > y_break) {
p->dispsw->clear(conp, p, real_y(p, 0), 0, y_break, conp->vc_cols);
p->dispsw->clear(conp, p, real_y(p, y_break), 0, height-y_break, conp->vc_cols);
} else
p->dispsw->clear(conp, p, real_y(p, 0), 0, height, conp->vc_cols);
conp->vc_video_erase_char = oldc;
}
return 0;
} else {
/* Tell console.c that it has to restore the screen itself */
return 1;
}
}
(*info->blank)(blank, info);
return 0;
}
static void fbcon_free_font(struct display *p)
{
if (p->userfont && p->fontdata &&
(--REFCOUNT(p->fontdata) == 0))
kfree(p->fontdata - FONT_EXTRA_WORDS*sizeof(int));
p->fontdata = NULL;
p->userfont = 0;
}
static inline int fbcon_get_font(int unit, struct console_font_op *op)
{
struct display *p = &fb_display[unit];
u8 *data = op->data;
u8 *fontdata = p->fontdata;
int i, j;
#ifdef CONFIG_FBCON_FONTWIDTH8_ONLY
if (fontwidth(p) != 8) return -EINVAL;
#endif
op->width = fontwidth(p);
op->height = fontheight(p);
op->charcount = (p->charmask == 0x1ff) ? 512 : 256;
if (!op->data) return 0;
if (op->width <= 8) {
j = fontheight(p);
for (i = 0; i < op->charcount; i++) {
memcpy(data, fontdata, j);
memset(data+j, 0, 32-j);
data += 32;
fontdata += j;
}
}
#ifndef CONFIG_FBCON_FONTWIDTH8_ONLY
else if (op->width <= 16) {
j = fontheight(p) * 2;
for (i = 0; i < op->charcount; i++) {
memcpy(data, fontdata, j);
memset(data+j, 0, 64-j);
data += 64;
fontdata += j;
}
} else if (op->width <= 24) {
for (i = 0; i < op->charcount; i++) {
for (j = 0; j < fontheight(p); j++) {
*data++ = fontdata[0];
*data++ = fontdata[1];
*data++ = fontdata[2];
fontdata += sizeof(u32);
}
memset(data, 0, 3*(32-j));
data += 3 * (32 - j);
}
} else {
j = fontheight(p) * 4;
for (i = 0; i < op->charcount; i++) {
memcpy(data, fontdata, j);
memset(data+j, 0, 128-j);
data += 128;
fontdata += j;
}
}
#endif
return 0;
}
static int fbcon_do_set_font(int unit, struct console_font_op *op, u8 *data, int userfont)
{
struct display *p = &fb_display[unit];
int resize;
int w = op->width;
int h = op->height;
int cnt;
char *old_data = NULL;
if (!fontwidthvalid(p,w)) {
if (userfont && op->op != KD_FONT_OP_COPY)
kfree(data - FONT_EXTRA_WORDS*sizeof(int));
return -ENXIO;
}
if (CON_IS_VISIBLE(p->conp) && softback_lines)
fbcon_set_origin(p->conp);
resize = (w != fontwidth(p)) || (h != fontheight(p));
if (p->userfont)
old_data = p->fontdata;
if (userfont)
cnt = FNTCHARCNT(data);
else
cnt = 256;
p->fontdata = data;
if ((p->userfont = userfont))
REFCOUNT(data)++;
p->_fontwidth = w;
p->_fontheight = h;
if (p->conp->vc_hi_font_mask && cnt == 256) {
p->conp->vc_hi_font_mask = 0;
if (p->conp->vc_can_do_color)
p->conp->vc_complement_mask >>= 1;
p->fgshift--;
p->bgshift--;
p->charmask = 0xff;
/* ++Edmund: reorder the attribute bits */
if (p->conp->vc_can_do_color) {
struct vc_data *conp = p->conp;
unsigned short *cp = (unsigned short *) conp->vc_origin;
int count = conp->vc_screenbuf_size/2;
unsigned short c;
for (; count > 0; count--, cp++) {
c = scr_readw(cp);
scr_writew(((c & 0xfe00) >> 1) | (c & 0xff), cp);
}
c = conp->vc_video_erase_char;
conp->vc_video_erase_char = ((c & 0xfe00) >> 1) | (c & 0xff);
conp->vc_attr >>= 1;
}
} else if (!p->conp->vc_hi_font_mask && cnt == 512) {
p->conp->vc_hi_font_mask = 0x100;
if (p->conp->vc_can_do_color)
p->conp->vc_complement_mask <<= 1;
p->fgshift++;
p->bgshift++;
p->charmask = 0x1ff;
/* ++Edmund: reorder the attribute bits */
{
struct vc_data *conp = p->conp;
unsigned short *cp = (unsigned short *) conp->vc_origin;
int count = conp->vc_screenbuf_size/2;
unsigned short c;
for (; count > 0; count--, cp++) {
unsigned short newc;
c = scr_readw(cp);
if (conp->vc_can_do_color)
newc = ((c & 0xff00) << 1) | (c & 0xff);
else
newc = c & ~0x100;
scr_writew(newc, cp);
}
c = conp->vc_video_erase_char;
if (conp->vc_can_do_color) {
conp->vc_video_erase_char = ((c & 0xff00) << 1) | (c & 0xff);
conp->vc_attr <<= 1;
} else
conp->vc_video_erase_char = c & ~0x100;
}
}
fbcon_font_widths(p);
if (resize) {
struct vc_data *conp = p->conp;
/* reset wrap/pan */
p->var.xoffset = p->var.yoffset = p->yscroll = 0;
p->vrows = p->var.yres_virtual/h;
if ((p->var.yres % h) && (p->var.yres_virtual % h < p->var.yres % h))
p->vrows--;
updatescrollmode(p);
vc_resize_con( p->var.yres/h, p->var.xres/w, unit );
if (CON_IS_VISIBLE(conp) && softback_buf) {
int l = fbcon_softback_size / conp->vc_size_row;
if (l > 5)
softback_end = softback_buf + l * conp->vc_size_row;
else {
/* Smaller scrollback makes no sense, and 0 would screw
the operation totally */
softback_top = 0;
}
}
} else if (CON_IS_VISIBLE(p->conp) && vt_cons[unit]->vc_mode == KD_TEXT) {
if (p->dispsw->clear_margins)
p->dispsw->clear_margins(p->conp, p, 0);
update_screen(unit);
}
if (old_data && (--REFCOUNT(old_data) == 0))
kfree(old_data - FONT_EXTRA_WORDS*sizeof(int));
return 0;
}
static inline int fbcon_copy_font(int unit, struct console_font_op *op)
{
struct display *od, *p = &fb_display[unit];
int h = op->height;
if (h < 0 || !vc_cons_allocated( h ))
return -ENOTTY;
if (h == unit)
return 0; /* nothing to do */
od = &fb_display[h];
if (od->fontdata == p->fontdata)
return 0; /* already the same font... */
op->width = fontwidth(od);
op->height = fontheight(od);
return fbcon_do_set_font(unit, op, od->fontdata, od->userfont);
}
static inline int fbcon_set_font(int unit, struct console_font_op *op)
{
int w = op->width;
int h = op->height;
int size = h;
int i, k;
u8 *new_data, *data = op->data, *p;
#ifdef CONFIG_FBCON_FONTWIDTH8_ONLY
if (w != 8)
return -EINVAL;
#endif
if ((w <= 0) || (w > 32) || (op->charcount != 256 && op->charcount != 512))
return -EINVAL;
if (w > 8) {
if (w <= 16)
size *= 2;
else
size *= 4;
}
size *= op->charcount;
if (!(new_data = kmalloc(FONT_EXTRA_WORDS*sizeof(int)+size, GFP_USER)))
return -ENOMEM;
new_data += FONT_EXTRA_WORDS*sizeof(int);
FNTSIZE(new_data) = size;
FNTCHARCNT(new_data) = op->charcount;
REFCOUNT(new_data) = 0; /* usage counter */
p = new_data;
if (w <= 8) {
for (i = 0; i < op->charcount; i++) {
memcpy(p, data, h);
data += 32;
p += h;
}
}
#ifndef CONFIG_FBCON_FONTWIDTH8_ONLY
else if (w <= 16) {
h *= 2;
for (i = 0; i < op->charcount; i++) {
memcpy(p, data, h);
data += 64;
p += h;
}
} else if (w <= 24) {
for (i = 0; i < op->charcount; i++) {
int j;
for (j = 0; j < h; j++) {
memcpy(p, data, 3);
p[3] = 0;
data += 3;
p += sizeof(u32);
}
data += 3*(32 - h);
}
} else {
h *= 4;
for (i = 0; i < op->charcount; i++) {
memcpy(p, data, h);
data += 128;
p += h;
}
}
#endif
/* we can do it in u32 chunks because of charcount is 256 or 512, so
font length must be multiple of 256, at least. And 256 is multiple
of 4 */
k = 0;
while (p > new_data) k += *--(u32 *)p;
FNTSUM(new_data) = k;
/* Check if the same font is on some other console already */
for (i = 0; i < MAX_NR_CONSOLES; i++) {
if (fb_display[i].userfont &&
fb_display[i].fontdata &&
FNTSUM(fb_display[i].fontdata) == k &&
FNTSIZE(fb_display[i].fontdata) == size &&
fontwidth(&fb_display[i]) == w &&
!memcmp(fb_display[i].fontdata, new_data, size)) {
kfree(new_data - FONT_EXTRA_WORDS*sizeof(int));
new_data = fb_display[i].fontdata;
break;
}
}
return fbcon_do_set_font(unit, op, new_data, 1);
}
static inline int fbcon_set_def_font(int unit, struct console_font_op *op)
{
char name[MAX_FONT_NAME];
struct fbcon_font_desc *f;
struct display *p = &fb_display[unit];
if (!op->data)
f = fbcon_get_default_font(p->var.xres, p->var.yres);
else if (strncpy_from_user(name, op->data, MAX_FONT_NAME-1) < 0)
return -EFAULT;
else {
name[MAX_FONT_NAME-1] = 0;
if (!(f = fbcon_find_font(name)))
return -ENOENT;
}
op->width = f->width;
op->height = f->height;
return fbcon_do_set_font(unit, op, f->data, 0);
}
static int fbcon_font_op(struct vc_data *conp, struct console_font_op *op)
{
int unit = conp->vc_num;
switch (op->op) {
case KD_FONT_OP_SET:
return fbcon_set_font(unit, op);
case KD_FONT_OP_GET:
return fbcon_get_font(unit, op);
case KD_FONT_OP_SET_DEFAULT:
return fbcon_set_def_font(unit, op);
case KD_FONT_OP_COPY:
return fbcon_copy_font(unit, op);
default:
return -ENOSYS;
}
}
static u16 palette_red[16];
static u16 palette_green[16];
static u16 palette_blue[16];
static struct fb_cmap palette_cmap = {
0, 16, palette_red, palette_green, palette_blue, NULL
};
static int fbcon_set_palette(struct vc_data *conp, unsigned char *table)
{
int unit = conp->vc_num;
struct display *p = &fb_display[unit];
int i, j, k;
u8 val;
if (!conp->vc_can_do_color || (!p->can_soft_blank && console_blanked))
return -EINVAL;
for (i = j = 0; i < 16; i++) {
k = table[i];
val = conp->vc_palette[j++];
palette_red[k] = (val<<8)|val;
val = conp->vc_palette[j++];
palette_green[k] = (val<<8)|val;
val = conp->vc_palette[j++];
palette_blue[k] = (val<<8)|val;
}
if (p->var.bits_per_pixel <= 4)
palette_cmap.len = 1<<p->var.bits_per_pixel;
else
palette_cmap.len = 16;
palette_cmap.start = 0;
return p->fb_info->fbops->fb_set_cmap(&palette_cmap, 1, unit, p->fb_info);
}
static u16 *fbcon_screen_pos(struct vc_data *conp, int offset)
{
int line;
unsigned long p;
if (conp->vc_num != fg_console || !softback_lines)
return (u16 *)(conp->vc_origin + offset);
line = offset / conp->vc_size_row;
if (line >= softback_lines)
return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row);
p = softback_curr + offset;
if (p >= softback_end)
p += softback_buf - softback_end;
return (u16 *)p;
}
static unsigned long fbcon_getxy(struct vc_data *conp, unsigned long pos, int *px, int *py)
{
int x, y;
unsigned long ret;
if (pos >= conp->vc_origin && pos < conp->vc_scr_end) {
unsigned long offset = (pos - conp->vc_origin) / 2;
x = offset % conp->vc_cols;
y = offset / conp->vc_cols;
if (conp->vc_num == fg_console)
y += softback_lines;
ret = pos + (conp->vc_cols - x) * 2;
} else if (conp->vc_num == fg_console && softback_lines) {
unsigned long offset = pos - softback_curr;
if (pos < softback_curr)
offset += softback_end - softback_buf;
offset /= 2;
x = offset % conp->vc_cols;
y = offset / conp->vc_cols;
ret = pos + (conp->vc_cols - x) * 2;
if (ret == softback_end)
ret = softback_buf;
if (ret == softback_in)
ret = conp->vc_origin;
} else {
/* Should not happen */
x = y = 0;
ret = conp->vc_origin;
}
if (px) *px = x;
if (py) *py = y;
return ret;
}
/* As we might be inside of softback, we may work with non-contiguous buffer,
that's why we have to use a separate routine. */
static void fbcon_invert_region(struct vc_data *conp, u16 *p, int cnt)
{
while (cnt--) {
u16 a = scr_readw(p);
if (!conp->vc_can_do_color)
a ^= 0x0800;
else if (conp->vc_hi_font_mask == 0x100)
a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | (((a) & 0x0e00) << 4);
else
a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
scr_writew(a, p++);
if (p == (u16 *)softback_end)
p = (u16 *)softback_buf;
if (p == (u16 *)softback_in)
p = (u16 *)conp->vc_origin;
}
}
static int fbcon_scrolldelta(struct vc_data *conp, int lines)
{
int unit, offset, limit, scrollback_old;
struct display *p;
unit = fg_console;
p = &fb_display[unit];
if (softback_top) {
if (conp->vc_num != unit)
return 0;
if (vt_cons[unit]->vc_mode != KD_TEXT || !lines)
return 0;
if (logo_shown >= 0) {
struct vc_data *conp2 = vc_cons[logo_shown].d;
if (conp2->vc_top == logo_lines && conp2->vc_bottom == conp2->vc_rows)
conp2->vc_top = 0;
if (logo_shown == unit) {
unsigned long p, q;
int i;
p = softback_in;
q = conp->vc_origin + logo_lines * conp->vc_size_row;
for (i = 0; i < logo_lines; i++) {
if (p == softback_top) break;
if (p == softback_buf) p = softback_end;
p -= conp->vc_size_row;
q -= conp->vc_size_row;
scr_memcpyw((u16 *)q, (u16 *)p, conp->vc_size_row);
}
softback_in = p;
update_region(unit, conp->vc_origin, logo_lines * conp->vc_cols);
}
logo_shown = -1;
}
fbcon_cursor(conp, CM_ERASE|CM_SOFTBACK);
fbcon_redraw_softback(conp, p, lines);
fbcon_cursor(conp, CM_DRAW|CM_SOFTBACK);
return 0;
}
if (!scrollback_phys_max)
return -ENOSYS;
scrollback_old = scrollback_current;
scrollback_current -= lines;
if (scrollback_current < 0)
scrollback_current = 0;
else if (scrollback_current > scrollback_max)
scrollback_current = scrollback_max;
if (scrollback_current == scrollback_old)
return 0;
if (!p->can_soft_blank &&
(console_blanked || vt_cons[unit]->vc_mode != KD_TEXT || !lines))
return 0;
fbcon_cursor(conp, CM_ERASE);
offset = p->yscroll-scrollback_current;
limit = p->vrows;
switch (p->scrollmode && __SCROLL_YMASK) {
case __SCROLL_YWRAP:
p->var.vmode |= FB_VMODE_YWRAP;
break;
case __SCROLL_YPAN:
limit -= conp->vc_rows;
p->var.vmode &= ~FB_VMODE_YWRAP;
break;
}
if (offset < 0)
offset += limit;
else if (offset >= limit)
offset -= limit;
p->var.xoffset = 0;
p->var.yoffset = offset*fontheight(p);
p->fb_info->updatevar(unit, p->fb_info);
if (!scrollback_current)
fbcon_cursor(conp, CM_DRAW);
return 0;
}
static int fbcon_set_origin(struct vc_data *conp)
{
if (softback_lines && !console_blanked)
fbcon_scrolldelta(conp, softback_lines);
return 0;
}
static inline unsigned safe_shift(unsigned d,int n)
{
return n<0 ? d>>-n : d<<n;
}
static int __init fbcon_show_logo( void )
{
struct display *p = &fb_display[fg_console]; /* draw to vt in foreground */
int depth = p->var.bits_per_pixel;
int line = p->next_line;
unsigned char *fb = p->screen_base;
unsigned char *logo;
unsigned char *dst, *src;
int i, j, n, x1, y1, x;
int logo_depth, done = 0;
/* Return if the frame buffer is not mapped */
if (!fb)
return 0;
/*
* Set colors if visual is PSEUDOCOLOR and we have enough colors, or for
* DIRECTCOLOR
* We don't have to set the colors for the 16-color logo, since that logo
* uses the standard VGA text console palette
*/
if ((p->visual == FB_VISUAL_PSEUDOCOLOR && depth >= 8) ||
(p->visual == FB_VISUAL_DIRECTCOLOR && depth >= 24))
for (i = 0; i < LINUX_LOGO_COLORS; i += n) {
n = LINUX_LOGO_COLORS - i;
if (n > 16)
/* palette_cmap provides space for only 16 colors at once */
n = 16;
palette_cmap.start = 32 + i;
palette_cmap.len = n;
for( j = 0; j < n; ++j ) {
palette_cmap.red[j] = (linux_logo_red[i+j] << 8) |
linux_logo_red[i+j];
palette_cmap.green[j] = (linux_logo_green[i+j] << 8) |
linux_logo_green[i+j];
palette_cmap.blue[j] = (linux_logo_blue[i+j] << 8) |
linux_logo_blue[i+j];
}
p->fb_info->fbops->fb_set_cmap(&palette_cmap, 1, fg_console,
p->fb_info);
}
if (depth >= 8) {
logo = linux_logo;
logo_depth = 8;
}
else if (depth >= 4) {
logo = linux_logo16;
logo_depth = 4;
}
else {
logo = linux_logo_bw;
logo_depth = 1;
}
if (p->fb_info->fbops->fb_rasterimg)
p->fb_info->fbops->fb_rasterimg(p->fb_info, 1);
for (x = 0; x < smp_num_cpus * (LOGO_W + 8) &&
x < p->var.xres - (LOGO_W + 8); x += (LOGO_W + 8)) {
#if defined(CONFIG_FBCON_CFB16) || defined(CONFIG_FBCON_CFB24) || \
defined(CONFIG_FBCON_CFB32) || defined(CONFIG_FB_SBUS)
if (p->visual == FB_VISUAL_DIRECTCOLOR) {
unsigned int val; /* max. depth 32! */
int bdepth;
int redshift, greenshift, blueshift;
/* Bug: Doesn't obey msb_right ... (who needs that?) */
redshift = p->var.red.offset;
greenshift = p->var.green.offset;
blueshift = p->var.blue.offset;
if (depth >= 24 && (depth % 8) == 0) {
/* have at least 8 bits per color */
src = logo;
bdepth = depth/8;
for( y1 = 0; y1 < LOGO_H; y1++ ) {
dst = fb + y1*line + x*bdepth;
for( x1 = 0; x1 < LOGO_W; x1++, src++ ) {
val = (*src << redshift) |
(*src << greenshift) |
(*src << blueshift);
if (bdepth == 4 && !((long)dst & 3)) {
/* Some cards require 32bit access */
fb_writel (val, dst);
dst += 4;
} else if (bdepth == 2 && !((long)dst & 1)) {
/* others require 16bit access */
fb_writew (val,dst);
dst +=2;
} else {
#ifdef __LITTLE_ENDIAN
for( i = 0; i < bdepth; ++i )
#else
for( i = bdepth-1; i >= 0; --i )
#endif
fb_writeb (val >> (i*8), dst++);
}
}
}
}
else if (depth >= 12 && depth <= 23) {
/* have 4..7 bits per color, using 16 color image */
unsigned int pix;
src = linux_logo16;
bdepth = (depth+7)/8;
for( y1 = 0; y1 < LOGO_H; y1++ ) {
dst = fb + y1*line + x*bdepth;
for( x1 = 0; x1 < LOGO_W/2; x1++, src++ ) {
pix = *src >> 4; /* upper nibble */
val = (pix << redshift) |
(pix << greenshift) |
(pix << blueshift);
#ifdef __LITTLE_ENDIAN
for( i = 0; i < bdepth; ++i )
#else
for( i = bdepth-1; i >= 0; --i )
#endif
fb_writeb (val >> (i*8), dst++);
pix = *src & 0x0f; /* lower nibble */
val = (pix << redshift) |
(pix << greenshift) |
(pix << blueshift);
#ifdef __LITTLE_ENDIAN
for( i = 0; i < bdepth; ++i )
#else
for( i = bdepth-1; i >= 0; --i )
#endif
fb_writeb (val >> (i*8), dst++);
}
}
}
done = 1;
}
#endif
#if defined(CONFIG_FBCON_CFB16) || defined(CONFIG_FBCON_CFB24) || \
defined(CONFIG_FBCON_CFB32) || defined(CONFIG_FB_SBUS)
if ((depth % 8 == 0) && (p->visual == FB_VISUAL_TRUECOLOR)) {
/* Modes without color mapping, needs special data transformation... */
unsigned int val; /* max. depth 32! */
int bdepth = depth/8;
unsigned char mask[9] = { 0,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff };
unsigned char redmask, greenmask, bluemask;
int redshift, greenshift, blueshift;
/* Bug: Doesn't obey msb_right ... (who needs that?) */
redmask = mask[p->var.red.length < 8 ? p->var.red.length : 8];
greenmask = mask[p->var.green.length < 8 ? p->var.green.length : 8];
bluemask = mask[p->var.blue.length < 8 ? p->var.blue.length : 8];
redshift = p->var.red.offset - (8-p->var.red.length);
greenshift = p->var.green.offset - (8-p->var.green.length);
blueshift = p->var.blue.offset - (8-p->var.blue.length);
src = logo;
for( y1 = 0; y1 < LOGO_H; y1++ ) {
dst = fb + y1*line + x*bdepth;
for( x1 = 0; x1 < LOGO_W; x1++, src++ ) {
val = safe_shift((linux_logo_red[*src-32] & redmask), redshift) |
safe_shift((linux_logo_green[*src-32] & greenmask), greenshift) |
safe_shift((linux_logo_blue[*src-32] & bluemask), blueshift);
if (bdepth == 4 && !((long)dst & 3)) {
/* Some cards require 32bit access */
fb_writel (val, dst);
dst += 4;
} else if (bdepth == 2 && !((long)dst & 1)) {
/* others require 16bit access */
fb_writew (val,dst);
dst +=2;
} else {
#ifdef __LITTLE_ENDIAN
for( i = 0; i < bdepth; ++i )
#else
for( i = bdepth-1; i >= 0; --i )
#endif
fb_writeb (val >> (i*8), dst++);
}
}
}
done = 1;
}
#endif
#if defined(CONFIG_FBCON_CFB4)
if (depth == 4 && p->type == FB_TYPE_PACKED_PIXELS) {
src = logo;
for( y1 = 0; y1 < LOGO_H; y1++) {
dst = fb + y1*line + x/2;
for( x1 = 0; x1 < LOGO_W/2; x1++) {
u8 q = *src++;
q = (q << 4) | (q >> 4);
fb_writeb (q, dst++);
}
}
done = 1;
}
#endif
#if defined(CONFIG_FBCON_CFB8) || defined(CONFIG_FB_SBUS)
if (depth == 8 && p->type == FB_TYPE_PACKED_PIXELS) {
/* depth 8 or more, packed, with color registers */
src = logo;
for( y1 = 0; y1 < LOGO_H; y1++ ) {
dst = fb + y1*line + x;
for( x1 = 0; x1 < LOGO_W; x1++ )
fb_writeb (*src++, dst++);
}
done = 1;
}
#endif
#if defined(CONFIG_FBCON_AFB) || defined(CONFIG_FBCON_ILBM) || \
defined(CONFIG_FBCON_IPLAN2P2) || defined(CONFIG_FBCON_IPLAN2P4) || \
defined(CONFIG_FBCON_IPLAN2P8)
if (depth >= 2 && (p->type == FB_TYPE_PLANES ||
p->type == FB_TYPE_INTERLEAVED_PLANES)) {
/* planes (normal or interleaved), with color registers */
int bit;
unsigned char val, mask;
int plane = p->next_plane;
#if defined(CONFIG_FBCON_IPLAN2P2) || defined(CONFIG_FBCON_IPLAN2P4) || \
defined(CONFIG_FBCON_IPLAN2P8)
int line_length = p->line_length;
/* for support of Atari interleaved planes */
#define MAP_X(x) (line_length ? (x) : ((x) & ~1)*depth + ((x) & 1))
#else
#define MAP_X(x) (x)
#endif
/* extract a bit from the source image */
#define BIT(p,pix,bit) (p[pix*logo_depth/8] & \
(1 << ((8-((pix*logo_depth)&7)-logo_depth) + bit)))
src = logo;
for( y1 = 0; y1 < LOGO_H; y1++ ) {
for( x1 = 0; x1 < LOGO_LINE; x1++, src += logo_depth ) {
dst = fb + y1*line + MAP_X(x/8+x1);
for( bit = 0; bit < logo_depth; bit++ ) {
val = 0;
for( mask = 0x80, i = 0; i < 8; mask >>= 1, i++ ) {
if (BIT( src, i, bit ))
val |= mask;
}
*dst = val;
dst += plane;
}
}
}
/* fill remaining planes */
if (depth > logo_depth) {
for( y1 = 0; y1 < LOGO_H; y1++ ) {
for( x1 = 0; x1 < LOGO_LINE; x1++ ) {
dst = fb + y1*line + MAP_X(x/8+x1) + logo_depth*plane;
for( i = logo_depth; i < depth; i++, dst += plane )
*dst = 0x00;
}
}
}
done = 1;
break;
}
#endif
#if defined(CONFIG_FBCON_MFB) || defined(CONFIG_FBCON_AFB) || \
defined(CONFIG_FBCON_ILBM) || defined(CONFIG_FBCON_HGA)
if (depth == 1 && (p->type == FB_TYPE_PACKED_PIXELS ||
p->type == FB_TYPE_PLANES ||
p->type == FB_TYPE_INTERLEAVED_PLANES)) {
/* monochrome */
unsigned char inverse = p->inverse || p->visual == FB_VISUAL_MONO01
? 0x00 : 0xff;
int is_hga = !strncmp(p->fb_info->modename, "HGA", 3);
/* can't use simply memcpy because need to apply inverse */
for( y1 = 0; y1 < LOGO_H; y1++ ) {
src = logo + y1*LOGO_LINE;
if (is_hga)
dst = fb + (y1%4)*8192 + (y1>>2)*line + x/8;
else
dst = fb + y1*line + x/8;
for( x1 = 0; x1 < LOGO_LINE; ++x1 )
fb_writeb(fb_readb(src++) ^ inverse, dst++);
}
done = 1;
}
#endif
#if defined(CONFIG_FBCON_VGA_PLANES)
if (depth == 4 && p->type == FB_TYPE_VGA_PLANES) {
outb_p(1,0x3ce); outb_p(0xf,0x3cf);
outb_p(3,0x3ce); outb_p(0,0x3cf);
outb_p(5,0x3ce); outb_p(0,0x3cf);
src = logo;
for (y1 = 0; y1 < LOGO_H; y1++) {
for (x1 = 0; x1 < LOGO_W / 2; x1++) {
dst = fb + y1*line + x1/4 + x/8;
outb_p(0,0x3ce);
outb_p(*src >> 4,0x3cf);
outb_p(8,0x3ce);
outb_p(1 << (7 - x1 % 4 * 2),0x3cf);
fb_readb (dst);
fb_writeb (0, dst);
outb_p(0,0x3ce);
outb_p(*src & 0xf,0x3cf);
outb_p(8,0x3ce);
outb_p(1 << (7 - (1 + x1 % 4 * 2)),0x3cf);
fb_readb (dst);
fb_writeb (0, dst);
src++;
}
}
done = 1;
}
#endif
}
if (p->fb_info->fbops->fb_rasterimg)
p->fb_info->fbops->fb_rasterimg(p->fb_info, 0);
/* Modes not yet supported: packed pixels with depth != 8 (does such a
* thing exist in reality?) */
return done ? (LOGO_H + fontheight(p) - 1) / fontheight(p) : 0 ;
}
#ifdef CONFIG_PM
/* console.c doesn't do enough here */
static int
pm_fbcon_request(struct pm_dev *dev, pm_request_t rqst, void *data)
{
unsigned long flags;
switch (rqst)
{
case PM_RESUME:
acquire_console_sem();
fbcon_sleeping = 0;
if (use_timer_cursor) {
cursor_timer.expires = jiffies+HZ/50;
add_timer(&cursor_timer);
}
release_console_sem();
break;
case PM_SUSPEND:
acquire_console_sem();
save_flags(flags);
cli();
if (use_timer_cursor)
del_timer(&cursor_timer);
fbcon_sleeping = 1;
restore_flags(flags);
release_console_sem();
break;
}
return 0;
}
#endif /* CONFIG_PM */
/*
* The console `switch' structure for the frame buffer based console
*/
const struct consw fb_con = {
con_startup: fbcon_startup,
con_init: fbcon_init,
con_deinit: fbcon_deinit,
con_clear: fbcon_clear,
con_putc: fbcon_putc,
con_putcs: fbcon_putcs,
con_cursor: fbcon_cursor,
con_scroll: fbcon_scroll,
con_bmove: fbcon_bmove,
con_switch: fbcon_switch,
con_blank: fbcon_blank,
con_font_op: fbcon_font_op,
con_set_palette: fbcon_set_palette,
con_scrolldelta: fbcon_scrolldelta,
con_set_origin: fbcon_set_origin,
con_invert_region: fbcon_invert_region,
con_screen_pos: fbcon_screen_pos,
con_getxy: fbcon_getxy,
};
/*
* Dummy Low Level Operations
*/
static void fbcon_dummy_op(void) {}
#define DUMMY (void *)fbcon_dummy_op
struct display_switch fbcon_dummy = {
setup: DUMMY,
bmove: DUMMY,
clear: DUMMY,
putc: DUMMY,
putcs: DUMMY,
revc: DUMMY,
};
/*
* Visible symbols for modules
*/
EXPORT_SYMBOL(fb_display);
EXPORT_SYMBOL(fbcon_redraw_bmove);
EXPORT_SYMBOL(fbcon_redraw_clear);
EXPORT_SYMBOL(fbcon_dummy);
EXPORT_SYMBOL(fb_con);
MODULE_LICENSE("GPL");
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