fbcon.c
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上传日期:2013-02-24
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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
- #define FBCON_LINUX_LOGO
- #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
- 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: %sn",info->modename);
- DPRINTK("visual: %dn",fb_display[unit].visual);
- DPRINTK("res: %dx%d-%dn",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 %dn", 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 "
- "supportedn", 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;
- #ifdef CONFIG_CONSOLE_PM // bushi
- if (!p->can_soft_blank && console_blanked)
- return;
- #endif
- 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;
- #ifdef CONFIG_CONSOLE_PM // bushi
- if (!p->can_soft_blank && console_blanked)
- return;
- #endif
-
- 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;
- #ifdef CONFIG_CONSOLE_PM // bushi
- if (!p->can_soft_blank && console_blanked)
- return;
- #endif
- 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);
- #ifdef CONFIG_CONSOLE_PM
- if (!p->can_soft_blank && console_blanked)
- return 0;
- #endif
- 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];
-
- #ifdef CONFIG_CONSOLE_PM // bushi
- if (!p->can_soft_blank && console_blanked)
- return;
- #endif
- 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;
- #ifdef CONFIG_MIZI
- return 0; /* disable blank-function */
- #endif
- 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;
- #ifdef CONFIG_CONSOLE_PM // bushi
- if (!conp->vc_can_do_color || (!p->can_soft_blank && console_blanked))
- return -EINVAL;
- #endif
- 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;
- #ifdef CONFIG_CONSOLE_PM // bushi
- if (!p->can_soft_blank &&
- (console_blanked || vt_cons[unit]->vc_mode != KD_TEXT || !lines))
- return 0;
- #endif
- 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)
- {
- #ifdef CONFIG_CONSOLE_PM // bushi
- if (softback_lines && !console_blanked)
- #endif
- 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 = 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] & redmask), redshift) |
- safe_shift((linux_logo_green[*src] & greenmask), greenshift) |
- safe_shift((linux_logo_blue[*src] & 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");