diff options
Diffstat (limited to 'drivers/video/console/fbcon.c')
| -rw-r--r-- | drivers/video/console/fbcon.c | 3665 |
1 files changed, 0 insertions, 3665 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c deleted file mode 100644 index 12ded23f1aaf..000000000000 --- a/drivers/video/console/fbcon.c +++ /dev/null @@ -1,3665 +0,0 @@ -/* - * 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/module.h> -#include <linux/types.h> -#include <linux/fs.h> -#include <linux/kernel.h> -#include <linux/delay.h> /* MSch: for IRQ probe */ -#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/font.h> -#include <linux/smp.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/crc32.h> /* For counting font checksums */ -#include <asm/fb.h> -#include <asm/irq.h> - -#include "fbcon.h" - -#ifdef FBCONDEBUG -# define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args) -#else -# define DPRINTK(fmt, args...) -#endif - -enum { - FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */ - FBCON_LOGO_DRAW = -2, /* draw the logo to a console */ - FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */ -}; - -static struct display fb_display[MAX_NR_CONSOLES]; - -static signed char con2fb_map[MAX_NR_CONSOLES]; -static signed char con2fb_map_boot[MAX_NR_CONSOLES]; - -static int logo_lines; -/* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO - enums. */ -static int logo_shown = FBCON_LOGO_CANSHOW; -/* Software scrollback */ -static 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; -/* console mappings */ -static int first_fb_vc; -static int last_fb_vc = MAX_NR_CONSOLES - 1; -static int fbcon_is_default = 1; -static int fbcon_has_exited; -static int primary_device = -1; -static int fbcon_has_console_bind; - -#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY -static int map_override; - -static inline void fbcon_map_override(void) -{ - map_override = 1; -} -#else -static inline void fbcon_map_override(void) -{ -} -#endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */ - -/* font data */ -static char fontname[40]; - -/* current fb_info */ -static int info_idx = -1; - -/* console rotation */ -static int initial_rotation; -static int fbcon_has_sysfs; - -static const struct consw fb_con; - -#define CM_SOFTBACK (8) - -#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) - -static int fbcon_set_origin(struct vc_data *); - -static int fbcon_cursor_noblink; - -#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 *vc, int init); -static void fbcon_deinit(struct vc_data *vc); -static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, - int width); -static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos); -static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, - int count, int ypos, int xpos); -static void fbcon_clear_margins(struct vc_data *vc, int bottom_only); -static void fbcon_cursor(struct vc_data *vc, int mode); -static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, - int height, int width); -static int fbcon_switch(struct vc_data *vc); -static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch); -static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table); - -/* - * Internal routines - */ -static __inline__ void ywrap_up(struct vc_data *vc, int count); -static __inline__ void ywrap_down(struct vc_data *vc, int count); -static __inline__ void ypan_up(struct vc_data *vc, int count); -static __inline__ void ypan_down(struct vc_data *vc, int count); -static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, - int dy, int dx, int height, int width, u_int y_break); -static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, - int unit); -static void fbcon_redraw_move(struct vc_data *vc, struct display *p, - int line, int count, int dy); -static void fbcon_modechanged(struct fb_info *info); -static void fbcon_set_all_vcs(struct fb_info *info); -static void fbcon_start(void); -static void fbcon_exit(void); -static struct device *fbcon_device; - -#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION -static inline void fbcon_set_rotation(struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - - if (!(info->flags & FBINFO_MISC_TILEBLITTING) && - ops->p->con_rotate < 4) - ops->rotate = ops->p->con_rotate; - else - ops->rotate = 0; -} - -static void fbcon_rotate(struct fb_info *info, u32 rotate) -{ - struct fbcon_ops *ops= info->fbcon_par; - struct fb_info *fb_info; - - if (!ops || ops->currcon == -1) - return; - - fb_info = registered_fb[con2fb_map[ops->currcon]]; - - if (info == fb_info) { - struct display *p = &fb_display[ops->currcon]; - - if (rotate < 4) - p->con_rotate = rotate; - else - p->con_rotate = 0; - - fbcon_modechanged(info); - } -} - -static void fbcon_rotate_all(struct fb_info *info, u32 rotate) -{ - struct fbcon_ops *ops = info->fbcon_par; - struct vc_data *vc; - struct display *p; - int i; - - if (!ops || ops->currcon < 0 || rotate > 3) - return; - - for (i = first_fb_vc; i <= last_fb_vc; i++) { - vc = vc_cons[i].d; - if (!vc || vc->vc_mode != KD_TEXT || - registered_fb[con2fb_map[i]] != info) - continue; - - p = &fb_display[vc->vc_num]; - p->con_rotate = rotate; - } - - fbcon_set_all_vcs(info); -} -#else -static inline void fbcon_set_rotation(struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - - ops->rotate = FB_ROTATE_UR; -} - -static void fbcon_rotate(struct fb_info *info, u32 rotate) -{ - return; -} - -static void fbcon_rotate_all(struct fb_info *info, u32 rotate) -{ - return; -} -#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ - -static int fbcon_get_rotate(struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - - return (ops) ? ops->rotate : 0; -} - -static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - - return (info->state != FBINFO_STATE_RUNNING || - vc->vc_mode != KD_TEXT || ops->graphics) && - !vt_force_oops_output(vc); -} - -static int get_color(struct vc_data *vc, struct fb_info *info, - u16 c, int is_fg) -{ - int depth = fb_get_color_depth(&info->var, &info->fix); - int color = 0; - - if (console_blanked) { - unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; - - c = vc->vc_video_erase_char & charmask; - } - - if (depth != 1) - color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c) - : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c); - - switch (depth) { - case 1: - { - int col = mono_col(info); - /* 0 or 1 */ - int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0; - int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col; - - if (console_blanked) - fg = bg; - - color = (is_fg) ? fg : bg; - break; - } - case 2: - /* - * Scale down 16-colors to 4 colors. Default 4-color palette - * is grayscale. However, simply dividing the values by 4 - * will not work, as colors 1, 2 and 3 will be scaled-down - * to zero rendering them invisible. So empirically convert - * colors to a sane 4-level grayscale. - */ - switch (color) { - case 0: - color = 0; /* black */ - break; - case 1 ... 6: - color = 2; /* white */ - break; - case 7 ... 8: - color = 1; /* gray */ - break; - default: - color = 3; /* intense white */ - break; - } - break; - case 3: - /* - * Last 8 entries of default 16-color palette is a more intense - * version of the first 8 (i.e., same chrominance, different - * luminance). - */ - color &= 7; - break; - } - - - return color; -} - -static void fbcon_update_softback(struct vc_data *vc) -{ - int l = fbcon_softback_size / vc->vc_size_row; - - if (l > 5) - softback_end = softback_buf + l * vc->vc_size_row; - else - /* Smaller scrollback makes no sense, and 0 would screw - the operation totally */ - softback_top = 0; -} - -static void fb_flashcursor(struct work_struct *work) -{ - struct fb_info *info = container_of(work, struct fb_info, queue); - struct fbcon_ops *ops = info->fbcon_par; - struct vc_data *vc = NULL; - int c; - int mode; - int ret; - - /* FIXME: we should sort out the unbind locking instead */ - /* instead we just fail to flash the cursor if we can't get - * the lock instead of blocking fbcon deinit */ - ret = console_trylock(); - if (ret == 0) - return; - - if (ops && ops->currcon != -1) - vc = vc_cons[ops->currcon].d; - - if (!vc || !con_is_visible(vc) || - registered_fb[con2fb_map[vc->vc_num]] != info || - vc->vc_deccm != 1) { - console_unlock(); - return; - } - - c = scr_readw((u16 *) vc->vc_pos); - mode = (!ops->cursor_flash || ops->cursor_state.enable) ? - CM_ERASE : CM_DRAW; - ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1), - get_color(vc, info, c, 0)); - console_unlock(); -} - -static void cursor_timer_handler(unsigned long dev_addr) -{ - struct fb_info *info = (struct fb_info *) dev_addr; - struct fbcon_ops *ops = info->fbcon_par; - - queue_work(system_power_efficient_wq, &info->queue); - mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); -} - -static void fbcon_add_cursor_timer(struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - - if ((!info->queue.func || info->queue.func == fb_flashcursor) && - !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) && - !fbcon_cursor_noblink) { - if (!info->queue.func) - INIT_WORK(&info->queue, fb_flashcursor); - - setup_timer(&ops->cursor_timer, cursor_timer_handler, - (unsigned long) info); - mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies); - ops->flags |= FBCON_FLAGS_CURSOR_TIMER; - } -} - -static void fbcon_del_cursor_timer(struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - - if (info->queue.func == fb_flashcursor && - ops->flags & FBCON_FLAGS_CURSOR_TIMER) { - del_timer_sync(&ops->cursor_timer); - ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER; - } -} - -#ifndef MODULE -static int __init fb_console_setup(char *this_opt) -{ - char *options; - int i, j; - - if (!this_opt || !*this_opt) - return 1; - - while ((options = strsep(&this_opt, ",")) != NULL) { - if (!strncmp(options, "font:", 5)) { - strlcpy(fontname, options + 5, sizeof(fontname)); - continue; - } - - if (!strncmp(options, "scrollback:", 11)) { - options += 11; - if (*options) { - fbcon_softback_size = simple_strtoul(options, &options, 0); - if (*options == 'k' || *options == 'K') { - fbcon_softback_size *= 1024; - } - } - continue; - } - - if (!strncmp(options, "map:", 4)) { - options += 4; - if (*options) { - for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) { - if (!options[j]) - j = 0; - con2fb_map_boot[i] = - (options[j++]-'0') % FB_MAX; - } - - fbcon_map_override(); - } - continue; - } - - if (!strncmp(options, "vc:", 3)) { - options += 3; - if (*options) - first_fb_vc = simple_strtoul(options, &options, 10) - 1; - if (first_fb_vc < 0) - first_fb_vc = 0; - if (*options++ == '-') - last_fb_vc = simple_strtoul(options, &options, 10) - 1; - fbcon_is_default = 0; - continue; - } - - if (!strncmp(options, "rotate:", 7)) { - options += 7; - if (*options) - initial_rotation = simple_strtoul(options, &options, 0); - if (initial_rotation > 3) - initial_rotation = 0; - continue; - } - } - return 1; -} - -__setup("fbcon=", fb_console_setup); -#endif - -static int search_fb_in_map(int idx) -{ - int i, retval = 0; - - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map[i] == idx) - retval = 1; - } - return retval; -} - -static int search_for_mapped_con(void) -{ - int i, retval = 0; - - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map[i] != -1) - retval = 1; - } - return retval; -} - -static int do_fbcon_takeover(int show_logo) -{ - int err, i; - - if (!num_registered_fb) - return -ENODEV; - - if (!show_logo) - logo_shown = FBCON_LOGO_DONTSHOW; - - for (i = first_fb_vc; i <= last_fb_vc; i++) - con2fb_map[i] = info_idx; - - err = do_take_over_console(&fb_con, first_fb_vc, last_fb_vc, - fbcon_is_default); - - if (err) { - for (i = first_fb_vc; i <= last_fb_vc; i++) - con2fb_map[i] = -1; - info_idx = -1; - } else { - fbcon_has_console_bind = 1; - } - - return err; -} - -#ifdef MODULE -static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, - int cols, int rows, int new_cols, int new_rows) -{ - logo_shown = FBCON_LOGO_DONTSHOW; -} -#else -static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, - int cols, int rows, int new_cols, int new_rows) -{ - /* Need to make room for the logo */ - struct fbcon_ops *ops = info->fbcon_par; - int cnt, erase = vc->vc_video_erase_char, step; - unsigned short *save = NULL, *r, *q; - int logo_height; - - if (info->flags & FBINFO_MODULE) { - logo_shown = FBCON_LOGO_DONTSHOW; - return; - } - - /* - * remove underline attribute from erase character - * if black and white framebuffer. - */ - if (fb_get_color_depth(&info->var, &info->fix) == 1) - erase &= ~0x400; - logo_height = fb_prepare_logo(info, ops->rotate); - logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height); - q = (unsigned short *) (vc->vc_origin + - vc->vc_size_row * rows); - step = logo_lines * cols; - for (r = q - logo_lines * cols; r < q; r++) - if (scr_readw(r) != vc->vc_video_erase_char) - break; - if (r != q && new_rows >= rows + logo_lines) { - save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL); - if (save) { - int i = cols < new_cols ? cols : new_cols; - scr_memsetw(save, erase, logo_lines * new_cols * 2); - r = q - step; - for (cnt = 0; cnt < logo_lines; cnt++, r += i) - scr_memcpyw(save + cnt * new_cols, r, 2 * i); - r = q; - } - } - if (r == q) { - /* We can scroll screen down */ - r = q - step - cols; - for (cnt = rows - logo_lines; cnt > 0; cnt--) { - scr_memcpyw(r + step, r, vc->vc_size_row); - r -= cols; - } - if (!save) { - int lines; - if (vc->vc_y + logo_lines >= rows) - lines = rows - vc->vc_y - 1; - else - lines = logo_lines; - vc->vc_y += lines; - vc->vc_pos += lines * vc->vc_size_row; - } - } - scr_memsetw((unsigned short *) vc->vc_origin, - erase, - vc->vc_size_row * logo_lines); - - if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { - fbcon_clear_margins(vc, 0); - update_screen(vc); - } - - if (save) { - q = (unsigned short *) (vc->vc_origin + - vc->vc_size_row * - rows); - scr_memcpyw(q, save, logo_lines * new_cols * 2); - vc->vc_y += logo_lines; - vc->vc_pos += logo_lines * vc->vc_size_row; - kfree(save); - } - - if (logo_lines > vc->vc_bottom) { - logo_shown = FBCON_LOGO_CANSHOW; - printk(KERN_INFO - "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); - } else if (logo_shown != FBCON_LOGO_DONTSHOW) { - logo_shown = FBCON_LOGO_DRAW; - vc->vc_top = logo_lines; - } -} -#endif /* MODULE */ - -#ifdef CONFIG_FB_TILEBLITTING -static void set_blitting_type(struct vc_data *vc, struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - - ops->p = &fb_display[vc->vc_num]; - - if ((info->flags & FBINFO_MISC_TILEBLITTING)) - fbcon_set_tileops(vc, info); - else { - fbcon_set_rotation(info); - fbcon_set_bitops(ops); - } -} - -static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) -{ - int err = 0; - - if (info->flags & FBINFO_MISC_TILEBLITTING && - info->tileops->fb_get_tilemax(info) < charcount) - err = 1; - - return err; -} -#else -static void set_blitting_type(struct vc_data *vc, struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - - info->flags &= ~FBINFO_MISC_TILEBLITTING; - ops->p = &fb_display[vc->vc_num]; - fbcon_set_rotation(info); - fbcon_set_bitops(ops); -} - -static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) -{ - return 0; -} - -#endif /* CONFIG_MISC_TILEBLITTING */ - - -static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, - int unit, int oldidx) -{ - struct fbcon_ops *ops = NULL; - int err = 0; - - if (!try_module_get(info->fbops->owner)) - err = -ENODEV; - - if (!err && info->fbops->fb_open && - info->fbops->fb_open(info, 0)) - err = -ENODEV; - - if (!err) { - ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); - if (!ops) - err = -ENOMEM; - } - - if (!err) { - ops->cur_blink_jiffies = HZ / 5; - info->fbcon_par = ops; - - if (vc) - set_blitting_type(vc, info); - } - - if (err) { - con2fb_map[unit] = oldidx; - module_put(info->fbops->owner); - } - - return err; -} - -static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, - struct fb_info *newinfo, int unit, - int oldidx, int found) -{ - struct fbcon_ops *ops = oldinfo->fbcon_par; - int err = 0, ret; - - if (oldinfo->fbops->fb_release && - oldinfo->fbops->fb_release(oldinfo, 0)) { - con2fb_map[unit] = oldidx; - if (!found && newinfo->fbops->fb_release) - newinfo->fbops->fb_release(newinfo, 0); - if (!found) - module_put(newinfo->fbops->owner); - err = -ENODEV; - } - - if (!err) { - fbcon_del_cursor_timer(oldinfo); - kfree(ops->cursor_state.mask); - kfree(ops->cursor_data); - kfree(ops->cursor_src); - kfree(ops->fontbuffer); - kfree(oldinfo->fbcon_par); - oldinfo->fbcon_par = NULL; - module_put(oldinfo->fbops->owner); - /* - If oldinfo and newinfo are driving the same hardware, - the fb_release() method of oldinfo may attempt to - restore the hardware state. This will leave the - newinfo in an undefined state. Thus, a call to - fb_set_par() may be needed for the newinfo. - */ - if (newinfo && newinfo->fbops->fb_set_par) { - ret = newinfo->fbops->fb_set_par(newinfo); - - if (ret) - printk(KERN_ERR "con2fb_release_oldinfo: " - "detected unhandled fb_set_par error, " - "error code %d\n", ret); - } - } - - return err; -} - -static void con2fb_init_display(struct vc_data *vc, struct fb_info *info, - int unit, int show_logo) -{ - struct fbcon_ops *ops = info->fbcon_par; - int ret; - - ops->currcon = fg_console; - - if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) { - ret = info->fbops->fb_set_par(info); - - if (ret) - printk(KERN_ERR "con2fb_init_display: detected " - "unhandled fb_set_par error, " - "error code %d\n", ret); - } - - ops->flags |= FBCON_FLAGS_INIT; - ops->graphics = 0; - fbcon_set_disp(info, &info->var, unit); - - if (show_logo) { - struct vc_data *fg_vc = vc_cons[fg_console].d; - struct fb_info *fg_info = - registered_fb[con2fb_map[fg_console]]; - - fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols, - fg_vc->vc_rows, fg_vc->vc_cols, - fg_vc->vc_rows); - } - - update_screen(vc_cons[fg_console].d); -} - -/** - * set_con2fb_map - map console to frame buffer device - * @unit: virtual console number to map - * @newidx: frame buffer index to map virtual console to - * @user: user request - * - * Maps a virtual console @unit to a frame buffer device - * @newidx. - * - * This should be called with the console lock held. - */ -static int set_con2fb_map(int unit, int newidx, int user) -{ - struct vc_data *vc = vc_cons[unit].d; - int oldidx = con2fb_map[unit]; - struct fb_info *info = registered_fb[newidx]; - struct fb_info *oldinfo = NULL; - int found, err = 0; - - if (oldidx == newidx) - return 0; - - if (!info) - return -EINVAL; - - if (!search_for_mapped_con() || !con_is_bound(&fb_con)) { - info_idx = newidx; - return do_fbcon_takeover(0); - } - - if (oldidx != -1) - oldinfo = registered_fb[oldidx]; - - found = search_fb_in_map(newidx); - - con2fb_map[unit] = newidx; - if (!err && !found) - err = con2fb_acquire_newinfo(vc, info, unit, oldidx); - - - /* - * If old fb is not mapped to any of the consoles, - * fbcon should release it. - */ - if (!err && oldinfo && !search_fb_in_map(oldidx)) - err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx, - found); - - if (!err) { - int show_logo = (fg_console == 0 && !user && - logo_shown != FBCON_LOGO_DONTSHOW); - - if (!found) - fbcon_add_cursor_timer(info); - con2fb_map_boot[unit] = newidx; - con2fb_init_display(vc, info, unit, show_logo); - } - - if (!search_fb_in_map(info_idx)) - info_idx = newidx; - - return err; -} - -/* - * Low Level Operations - */ -/* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */ -static int var_to_display(struct display *disp, - struct fb_var_screeninfo *var, - struct fb_info *info) -{ - disp->xres_virtual = var->xres_virtual; - disp->yres_virtual = var->yres_virtual; - disp->bits_per_pixel = var->bits_per_pixel; - disp->grayscale = var->grayscale; - disp->nonstd = var->nonstd; - disp->accel_flags = var->accel_flags; - disp->height = var->height; - disp->width = var->width; - disp->red = var->red; - disp->green = var->green; - disp->blue = var->blue; - disp->transp = var->transp; - disp->rotate = var->rotate; - disp->mode = fb_match_mode(var, &info->modelist); - if (disp->mode == NULL) - /* This should not happen */ - return -EINVAL; - return 0; -} - -static void display_to_var(struct fb_var_screeninfo *var, - struct display *disp) -{ - fb_videomode_to_var(var, disp->mode); - var->xres_virtual = disp->xres_virtual; - var->yres_virtual = disp->yres_virtual; - var->bits_per_pixel = disp->bits_per_pixel; - var->grayscale = disp->grayscale; - var->nonstd = disp->nonstd; - var->accel_flags = disp->accel_flags; - var->height = disp->height; - var->width = disp->width; - var->red = disp->red; - var->green = disp->green; - var->blue = disp->blue; - var->transp = disp->transp; - var->rotate = disp->rotate; -} - -static const char *fbcon_startup(void) -{ - const char *display_desc = "frame buffer device"; - struct display *p = &fb_display[fg_console]; - struct vc_data *vc = vc_cons[fg_console].d; - const struct font_desc *font = NULL; - struct module *owner; - struct fb_info *info = NULL; - struct fbcon_ops *ops; - int rows, cols; - - /* - * 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 || info_idx == -1) - return display_desc; - /* - * Instead of blindly using registered_fb[0], we use info_idx, set by - * fb_console_init(); - */ - info = registered_fb[info_idx]; - if (!info) - return NULL; - - owner = info->fbops->owner; - if (!try_module_get(owner)) - return NULL; - if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) { - module_put(owner); - return NULL; - } - - ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); - if (!ops) { - module_put(owner); - return NULL; - } - - ops->currcon = -1; - ops->graphics = 1; - ops->cur_rotate = -1; - ops->cur_blink_jiffies = HZ / 5; - info->fbcon_par = ops; - p->con_rotate = initial_rotation; - set_blitting_type(vc, info); - - if (info->fix.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; - } - - /* Setup default font */ - if (!p->fontdata && !vc->vc_font.data) { - if (!fontname[0] || !(font = find_font(fontname))) - font = get_default_font(info->var.xres, - info->var.yres, - info->pixmap.blit_x, - info->pixmap.blit_y); - vc->vc_font.width = font->width; - vc->vc_font.height = font->height; - vc->vc_font.data = (void *)(p->fontdata = font->data); - vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ - } else { - p->fontdata = vc->vc_font.data; - } - - cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); - rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); - cols /= vc->vc_font.width; - rows /= vc->vc_font.height; - vc_resize(vc, cols, rows); - - DPRINTK("mode: %s\n", info->fix.id); - DPRINTK("visual: %d\n", info->fix.visual); - DPRINTK("res: %dx%d-%d\n", info->var.xres, - info->var.yres, - info->var.bits_per_pixel); - - fbcon_add_cursor_timer(info); - fbcon_has_exited = 0; - return display_desc; -} - -static void fbcon_init(struct vc_data *vc, int init) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops; - struct vc_data **default_mode = vc->vc_display_fg; - struct vc_data *svc = *default_mode; - struct display *t, *p = &fb_display[vc->vc_num]; - int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; - int cap, ret; - - if (info_idx == -1 || info == NULL) - return; - - cap = info->flags; - - if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || - (info->fix.type == FB_TYPE_TEXT)) - logo = 0; - - if (var_to_display(p, &info->var, info)) - return; - - if (!info->fbcon_par) - con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); - - /* If we are not the first console on this - fb, copy the font from that console */ - t = &fb_display[fg_console]; - if (!p->fontdata) { - if (t->fontdata) { - struct vc_data *fvc = vc_cons[fg_console].d; - - vc->vc_font.data = (void *)(p->fontdata = - fvc->vc_font.data); - vc->vc_font.width = fvc->vc_font.width; - vc->vc_font.height = fvc->vc_font.height; - p->userfont = t->userfont; - - if (p->userfont) - REFCOUNT(p->fontdata)++; - } else { - const struct font_desc *font = NULL; - - if (!fontname[0] || !(font = find_font(fontname))) - font = get_default_font(info->var.xres, - info->var.yres, - info->pixmap.blit_x, - info->pixmap.blit_y); - vc->vc_font.width = font->width; - vc->vc_font.height = font->height; - vc->vc_font.data = (void *)(p->fontdata = font->data); - vc->vc_font.charcount = 256; /* FIXME Need to - support more fonts */ - } - } - - if (p->userfont) - charcnt = FNTCHARCNT(p->fontdata); - - vc->vc_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT); - vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); - vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; - if (charcnt == 256) { - vc->vc_hi_font_mask = 0; - } else { - vc->vc_hi_font_mask = 0x100; - if (vc->vc_can_do_color) - vc->vc_complement_mask <<= 1; - } - - if (!*svc->vc_uni_pagedir_loc) - con_set_default_unimap(svc); - if (!*vc->vc_uni_pagedir_loc) - con_copy_unimap(vc, svc); - - ops = info->fbcon_par; - ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); - p->con_rotate = initial_rotation; - set_blitting_type(vc, info); - - cols = vc->vc_cols; - rows = vc->vc_rows; - new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); - new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); - new_cols /= vc->vc_font.width; - new_rows /= vc->vc_font.height; - - /* - * We must always set the mode. The mode of the previous console - * driver could be in the same resolution but we are using different - * hardware so we have to initialize the hardware. - * - * We need to do it in fbcon_init() to prevent screen corruption. - */ - if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { - if (info->fbops->fb_set_par && - !(ops->flags & FBCON_FLAGS_INIT)) { - ret = info->fbops->fb_set_par(info); - - if (ret) - printk(KERN_ERR "fbcon_init: detected " - "unhandled fb_set_par error, " - "error code %d\n", ret); - } - - ops->flags |= FBCON_FLAGS_INIT; - } - - ops->graphics = 0; - - if ((cap & FBINFO_HWACCEL_COPYAREA) && - !(cap & FBINFO_HWACCEL_DISABLED)) - p->scrollmode = SCROLL_MOVE; - else /* default to something safe */ - p->scrollmode = SCROLL_REDRAW; - - /* - * ++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) { - vc->vc_cols = new_cols; - vc->vc_rows = new_rows; - } else - vc_resize(vc, new_cols, new_rows); - - if (logo) - fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows); - - if (vc == svc && softback_buf) - fbcon_update_softback(vc); - - if (ops->rotate_font && ops->rotate_font(info, vc)) { - ops->rotate = FB_ROTATE_UR; - set_blitting_type(vc, info); - } - - ops->p = &fb_display[fg_console]; -} - -static void fbcon_free_font(struct display *p, bool freefont) -{ - if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) - kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); - p->fontdata = NULL; - p->userfont = 0; -} - -static void set_vc_hi_font(struct vc_data *vc, bool set); - -static void fbcon_deinit(struct vc_data *vc) -{ - struct display *p = &fb_display[vc->vc_num]; - struct fb_info *info; - struct fbcon_ops *ops; - int idx; - bool free_font = true; - - idx = con2fb_map[vc->vc_num]; - - if (idx == -1) - goto finished; - - info = registered_fb[idx]; - - if (!info) - goto finished; - - if (info->flags & FBINFO_MISC_FIRMWARE) - free_font = false; - ops = info->fbcon_par; - - if (!ops) - goto finished; - - if (con_is_visible(vc)) - fbcon_del_cursor_timer(info); - - ops->flags &= ~FBCON_FLAGS_INIT; -finished: - - fbcon_free_font(p, free_font); - if (free_font) - vc->vc_font.data = NULL; - - if (vc->vc_hi_font_mask) - set_vc_hi_font(vc, false); - - if (!con_is_bound(&fb_con)) - fbcon_exit(); - - return; -} - -/* ====================================================================== */ - -/* 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(), fbcon_clear_margins() - * - * 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() -- (font width != 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 void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, - int width) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - - struct display *p = &fb_display[vc->vc_num]; - u_int y_break; - - if (fbcon_is_inactive(vc, info)) - return; - - if (!height || !width) - return; - - if (sy < vc->vc_top && vc->vc_top == logo_lines) { - vc->vc_top = 0; - /* - * If the font dimensions are not an integral of the display - * dimensions then the ops->clear below won't end up clearing - * the margins. Call clear_margins here in case the logo - * bitmap stretched into the margin area. - */ - fbcon_clear_margins(vc, 0); - } - - /* 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; - ops->clear(vc, info, real_y(p, sy), sx, b, width); - ops->clear(vc, info, real_y(p, sy + b), sx, height - b, - width); - } else - ops->clear(vc, info, real_y(p, sy), sx, height, width); -} - -static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, - int count, int ypos, int xpos) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct display *p = &fb_display[vc->vc_num]; - struct fbcon_ops *ops = info->fbcon_par; - - if (!fbcon_is_inactive(vc, info)) - ops->putcs(vc, info, s, count, real_y(p, ypos), xpos, - get_color(vc, info, scr_readw(s), 1), - get_color(vc, info, scr_readw(s), 0)); -} - -static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) -{ - unsigned short chr; - - scr_writew(c, &chr); - fbcon_putcs(vc, &chr, 1, ypos, xpos); -} - -static void fbcon_clear_margins(struct vc_data *vc, int bottom_only) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - - if (!fbcon_is_inactive(vc, info)) - ops->clear_margins(vc, info, bottom_only); -} - -static void fbcon_cursor(struct vc_data *vc, int mode) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - int y; - int c = scr_readw((u16 *) vc->vc_pos); - - ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); - - if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1) - return; - - if (vc->vc_cursor_type & 0x10) - fbcon_del_cursor_timer(info); - else - fbcon_add_cursor_timer(info); - - ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1; - if (mode & CM_SOFTBACK) { - mode &= ~CM_SOFTBACK; - y = softback_lines; - } else { - if (softback_lines) - fbcon_set_origin(vc); - y = 0; - } - - ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1), - get_color(vc, info, c, 0)); -} - -static int scrollback_phys_max = 0; -static int scrollback_max = 0; -static int scrollback_current = 0; - -static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var, - int unit) -{ - struct display *p, *t; - struct vc_data **default_mode, *vc; - struct vc_data *svc; - struct fbcon_ops *ops = info->fbcon_par; - int rows, cols, charcnt = 256; - - p = &fb_display[unit]; - - if (var_to_display(p, var, info)) - return; - - vc = vc_cons[unit].d; - - if (!vc) - return; - - default_mode = vc->vc_display_fg; - svc = *default_mode; - t = &fb_display[svc->vc_num]; - - if (!vc->vc_font.data) { - vc->vc_font.data = (void *)(p->fontdata = t->fontdata); - vc->vc_font.width = (*default_mode)->vc_font.width; - vc->vc_font.height = (*default_mode)->vc_font.height; - p->userfont = t->userfont; - if (p->userfont) - REFCOUNT(p->fontdata)++; - } - if (p->userfont) - charcnt = FNTCHARCNT(p->fontdata); - - var->activate = FB_ACTIVATE_NOW; - info->var.activate = var->activate; - var->yoffset = info->var.yoffset; - var->xoffset = info->var.xoffset; - fb_set_var(info, var); - ops->var = info->var; - vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); - vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; - if (charcnt == 256) { - vc->vc_hi_font_mask = 0; - } else { - vc->vc_hi_font_mask = 0x100; - if (vc->vc_can_do_color) - vc->vc_complement_mask <<= 1; - } - - if (!*svc->vc_uni_pagedir_loc) - con_set_default_unimap(svc); - if (!*vc->vc_uni_pagedir_loc) - con_copy_unimap(vc, svc); - - cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); - rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); - cols /= vc->vc_font.width; - rows /= vc->vc_font.height; - vc_resize(vc, cols, rows); - - if (con_is_visible(vc)) { - update_screen(vc); - if (softback_buf) - fbcon_update_softback(vc); - } -} - -static __inline__ void ywrap_up(struct vc_data *vc, int count) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - struct display *p = &fb_display[vc->vc_num]; - - p->yscroll += count; - if (p->yscroll >= p->vrows) /* Deal with wrap */ - p->yscroll -= p->vrows; - ops->var.xoffset = 0; - ops->var.yoffset = p->yscroll * vc->vc_font.height; - ops->var.vmode |= FB_VMODE_YWRAP; - ops->update_start(info); - scrollback_max += count; - if (scrollback_max > scrollback_phys_max) - scrollback_max = scrollback_phys_max; - scrollback_current = 0; -} - -static __inline__ void ywrap_down(struct vc_data *vc, int count) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - struct display *p = &fb_display[vc->vc_num]; - - p->yscroll -= count; - if (p->yscroll < 0) /* Deal with wrap */ - p->yscroll += p->vrows; - ops->var.xoffset = 0; - ops->var.yoffset = p->yscroll * vc->vc_font.height; - ops->var.vmode |= FB_VMODE_YWRAP; - ops->update_start(info); - scrollback_max -= count; - if (scrollback_max < 0) - scrollback_max = 0; - scrollback_current = 0; -} - -static __inline__ void ypan_up(struct vc_data *vc, int count) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct display *p = &fb_display[vc->vc_num]; - struct fbcon_ops *ops = info->fbcon_par; - - p->yscroll += count; - if (p->yscroll > p->vrows - vc->vc_rows) { - ops->bmove(vc, info, p->vrows - vc->vc_rows, - 0, 0, 0, vc->vc_rows, vc->vc_cols); - p->yscroll -= p->vrows - vc->vc_rows; - } - - ops->var.xoffset = 0; - ops->var.yoffset = p->yscroll * vc->vc_font.height; - ops->var.vmode &= ~FB_VMODE_YWRAP; - ops->update_start(info); - fbcon_clear_margins(vc, 1); - scrollback_max += count; - if (scrollback_max > scrollback_phys_max) - scrollback_max = scrollback_phys_max; - scrollback_current = 0; -} - -static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - struct display *p = &fb_display[vc->vc_num]; - - p->yscroll += count; - - if (p->yscroll > p->vrows - vc->vc_rows) { - p->yscroll -= p->vrows - vc->vc_rows; - fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t); - } - - ops->var.xoffset = 0; - ops->var.yoffset = p->yscroll * vc->vc_font.height; - ops->var.vmode &= ~FB_VMODE_YWRAP; - ops->update_start(info); - fbcon_clear_margins(vc, 1); - scrollback_max += count; - if (scrollback_max > scrollback_phys_max) - scrollback_max = scrollback_phys_max; - scrollback_current = 0; -} - -static __inline__ void ypan_down(struct vc_data *vc, int count) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct display *p = &fb_display[vc->vc_num]; - struct fbcon_ops *ops = info->fbcon_par; - - p->yscroll -= count; - if (p->yscroll < 0) { - ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, - 0, vc->vc_rows, vc->vc_cols); - p->yscroll += p->vrows - vc->vc_rows; - } - - ops->var.xoffset = 0; - ops->var.yoffset = p->yscroll * vc->vc_font.height; - ops->var.vmode &= ~FB_VMODE_YWRAP; - ops->update_start(info); - fbcon_clear_margins(vc, 1); - scrollback_max -= count; - if (scrollback_max < 0) - scrollback_max = 0; - scrollback_current = 0; -} - -static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - struct display *p = &fb_display[vc->vc_num]; - - p->yscroll -= count; - - if (p->yscroll < 0) { - p->yscroll += p->vrows - vc->vc_rows; - fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count); - } - - ops->var.xoffset = 0; - ops->var.yoffset = p->yscroll * vc->vc_font.height; - ops->var.vmode &= ~FB_VMODE_YWRAP; - ops->update_start(info); - fbcon_clear_margins(vc, 1); - scrollback_max -= count; - if (scrollback_max < 0) - scrollback_max = 0; - scrollback_current = 0; -} - -static void fbcon_redraw_softback(struct vc_data *vc, struct display *p, - long delta) -{ - int count = vc->vc_rows; - unsigned short *d, *s; - unsigned long n; - int line = 0; - - d = (u16 *) softback_curr; - if (d == (u16 *) softback_in) - d = (u16 *) vc->vc_origin; - n = softback_curr + delta * vc->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) / vc->vc_size_row; - n = softback_top; - } - } else if (softback_curr >= softback_top - && n < softback_top) { - softback_lines -= - (softback_top - n) / vc->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 *) vc->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) { - fbcon_putcs(vc, start, s - start, - line, x); - x += s - start; - start = s; - } - } - if (c == scr_readw(d)) { - if (s > start) { - fbcon_putcs(vc, start, s - start, - line, x); - x += s - start + 1; - start = s + 1; - } else { - x++; - start++; - } - } - s++; - d++; - } while (s < le); - if (s > start) - fbcon_putcs(vc, start, s - start, line, x); - line++; - if (d == (u16 *) softback_end) - d = (u16 *) softback_buf; - if (d == (u16 *) softback_in) - d = (u16 *) vc->vc_origin; - if (s == (u16 *) softback_end) - s = (u16 *) softback_buf; - if (s == (u16 *) softback_in) - s = (u16 *) vc->vc_origin; - } -} - -static void fbcon_redraw_move(struct vc_data *vc, struct display *p, - int line, int count, int dy) -{ - unsigned short *s = (unsigned short *) - (vc->vc_origin + vc->vc_size_row * line); - - 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) { - fbcon_putcs(vc, start, s - start, - dy, x); - x += s - start; - start = s; - } - } - console_conditional_schedule(); - s++; - } while (s < le); - if (s > start) - fbcon_putcs(vc, start, s - start, dy, x); - console_conditional_schedule(); - dy++; - } -} - -static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info, - struct display *p, int line, int count, int ycount) -{ - int offset = ycount * vc->vc_cols; - unsigned short *d = (unsigned short *) - (vc->vc_origin + vc->vc_size_row * line); - unsigned short *s = d + offset; - struct fbcon_ops *ops = info->fbcon_par; - - while (count--) { - unsigned short *start = s; - unsigned short *le = advance_row(s, 1); - unsigned short c; - int x = 0; - - do { - c = scr_readw(s); - - if (c == scr_readw(d)) { - if (s > start) { - ops->bmove(vc, info, line + ycount, x, - line, x, 1, s-start); - 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) - ops->bmove(vc, info, line + ycount, x, line, x, 1, - s-start); - console_conditional_schedule(); - if (ycount > 0) - line++; - else { - line--; - /* NOTE: We subtract two lines from these pointers */ - s -= vc->vc_size_row; - d -= vc->vc_size_row; - } - } -} - -static void fbcon_redraw(struct vc_data *vc, struct display *p, - int line, int count, int offset) -{ - unsigned short *d = (unsigned short *) - (vc->vc_origin + vc->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) { - fbcon_putcs(vc, start, s - start, - line, x); - x += s - start; - start = s; - } - } - if (c == scr_readw(d)) { - if (s > start) { - fbcon_putcs(vc, start, s - start, - 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) - fbcon_putcs(vc, start, s - start, line, x); - console_conditional_schedule(); - if (offset > 0) - line++; - else { - line--; - /* NOTE: We subtract two lines from these pointers */ - s -= vc->vc_size_row; - d -= vc->vc_size_row; - } - } -} - -static inline void fbcon_softback_note(struct vc_data *vc, int t, - int count) -{ - unsigned short *p; - - if (vc->vc_num != fg_console) - return; - p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row); - - while (count) { - scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row); - count--; - p = advance_row(p, 1); - softback_in += vc->vc_size_row; - if (softback_in == softback_end) - softback_in = softback_buf; - if (softback_in == softback_top) { - softback_top += vc->vc_size_row; - if (softback_top == softback_end) - softback_top = softback_buf; - } - } - softback_curr = softback_in; -} - -static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, - enum con_scroll dir, unsigned int count) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct display *p = &fb_display[vc->vc_num]; - int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK; - - if (fbcon_is_inactive(vc, info)) - return true; - - fbcon_cursor(vc, 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 > vc->vc_rows) /* Maximum realistic size */ - count = vc->vc_rows; - if (softback_top) - fbcon_softback_note(vc, t, count); - if (logo_shown >= 0) - goto redraw_up; - switch (p->scrollmode) { - case SCROLL_MOVE: - fbcon_redraw_blit(vc, info, p, t, b - t - count, - count); - fbcon_clear(vc, b - count, 0, count, vc->vc_cols); - scr_memsetw((unsigned short *) (vc->vc_origin + - vc->vc_size_row * - (b - count)), - vc->vc_video_erase_char, - vc->vc_size_row * count); - return true; - break; - - case SCROLL_WRAP_MOVE: - if (b - t - count > 3 * vc->vc_rows >> 2) { - if (t > 0) - fbcon_bmove(vc, 0, 0, count, 0, t, - vc->vc_cols); - ywrap_up(vc, count); - if (vc->vc_rows - b > 0) - fbcon_bmove(vc, b - count, 0, b, 0, - vc->vc_rows - b, - vc->vc_cols); - } else if (info->flags & FBINFO_READS_FAST) - fbcon_bmove(vc, t + count, 0, t, 0, - b - t - count, vc->vc_cols); - else - goto redraw_up; - fbcon_clear(vc, b - count, 0, count, vc->vc_cols); - break; - - case SCROLL_PAN_REDRAW: - if ((p->yscroll + count <= - 2 * (p->vrows - vc->vc_rows)) - && ((!scroll_partial && (b - t == vc->vc_rows)) - || (scroll_partial - && (b - t - count > - 3 * vc->vc_rows >> 2)))) { - if (t > 0) - fbcon_redraw_move(vc, p, 0, t, count); - ypan_up_redraw(vc, t, count); - if (vc->vc_rows - b > 0) - fbcon_redraw_move(vc, p, b, - vc->vc_rows - b, b); - } else - fbcon_redraw_move(vc, p, t + count, b - t - count, t); - fbcon_clear(vc, b - count, 0, count, vc->vc_cols); - break; - - case SCROLL_PAN_MOVE: - if ((p->yscroll + count <= - 2 * (p->vrows - vc->vc_rows)) - && ((!scroll_partial && (b - t == vc->vc_rows)) - || (scroll_partial - && (b - t - count > - 3 * vc->vc_rows >> 2)))) { - if (t > 0) - fbcon_bmove(vc, 0, 0, count, 0, t, - vc->vc_cols); - ypan_up(vc, count); - if (vc->vc_rows - b > 0) - fbcon_bmove(vc, b - count, 0, b, 0, - vc->vc_rows - b, - vc->vc_cols); - } else if (info->flags & FBINFO_READS_FAST) - fbcon_bmove(vc, t + count, 0, t, 0, - b - t - count, vc->vc_cols); - else - goto redraw_up; - fbcon_clear(vc, b - count, 0, count, vc->vc_cols); - break; - - case SCROLL_REDRAW: - redraw_up: - fbcon_redraw(vc, p, t, b - t - count, - count * vc->vc_cols); - fbcon_clear(vc, b - count, 0, count, vc->vc_cols); - scr_memsetw((unsigned short *) (vc->vc_origin + - vc->vc_size_row * - (b - count)), - vc->vc_video_erase_char, - vc->vc_size_row * count); - return true; - } - break; - - case SM_DOWN: - if (count > vc->vc_rows) /* Maximum realistic size */ - count = vc->vc_rows; - if (logo_shown >= 0) - goto redraw_down; - switch (p->scrollmode) { - case SCROLL_MOVE: - fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, - -count); - fbcon_clear(vc, t, 0, count, vc->vc_cols); - scr_memsetw((unsigned short *) (vc->vc_origin + - vc->vc_size_row * - t), - vc->vc_video_erase_char, - vc->vc_size_row * count); - return true; - break; - - case SCROLL_WRAP_MOVE: - if (b - t - count > 3 * vc->vc_rows >> 2) { - if (vc->vc_rows - b > 0) - fbcon_bmove(vc, b, 0, b - count, 0, - vc->vc_rows - b, - vc->vc_cols); - ywrap_down(vc, count); - if (t > 0) - fbcon_bmove(vc, count, 0, 0, 0, t, - vc->vc_cols); - } else if (info->flags & FBINFO_READS_FAST) - fbcon_bmove(vc, t, 0, t + count, 0, - b - t - count, vc->vc_cols); - else - goto redraw_down; - fbcon_clear(vc, t, 0, count, vc->vc_cols); - break; - - case SCROLL_PAN_MOVE: - if ((count - p->yscroll <= p->vrows - vc->vc_rows) - && ((!scroll_partial && (b - t == vc->vc_rows)) - || (scroll_partial - && (b - t - count > - 3 * vc->vc_rows >> 2)))) { - if (vc->vc_rows - b > 0) - fbcon_bmove(vc, b, 0, b - count, 0, - vc->vc_rows - b, - vc->vc_cols); - ypan_down(vc, count); - if (t > 0) - fbcon_bmove(vc, count, 0, 0, 0, t, - vc->vc_cols); - } else if (info->flags & FBINFO_READS_FAST) - fbcon_bmove(vc, t, 0, t + count, 0, - b - t - count, vc->vc_cols); - else - goto redraw_down; - fbcon_clear(vc, t, 0, count, vc->vc_cols); - break; - - case SCROLL_PAN_REDRAW: - if ((count - p->yscroll <= p->vrows - vc->vc_rows) - && ((!scroll_partial && (b - t == vc->vc_rows)) - || (scroll_partial - && (b - t - count > - 3 * vc->vc_rows >> 2)))) { - if (vc->vc_rows - b > 0) - fbcon_redraw_move(vc, p, b, vc->vc_rows - b, - b - count); - ypan_down_redraw(vc, t, count); - if (t > 0) - fbcon_redraw_move(vc, p, count, t, 0); - } else - fbcon_redraw_move(vc, p, t, b - t - count, t + count); - fbcon_clear(vc, t, 0, count, vc->vc_cols); - break; - - case SCROLL_REDRAW: - redraw_down: - fbcon_redraw(vc, p, b - 1, b - t - count, - -count * vc->vc_cols); - fbcon_clear(vc, t, 0, count, vc->vc_cols); - scr_memsetw((unsigned short *) (vc->vc_origin + - vc->vc_size_row * - t), - vc->vc_video_erase_char, - vc->vc_size_row * count); - return true; - } - } - return false; -} - - -static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx, - int height, int width) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct display *p = &fb_display[vc->vc_num]; - - if (fbcon_is_inactive(vc, info)) - return; - - if (!width || !height) - return; - - /* 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(vc, p, sy, sx, dy, dx, height, width, - p->vrows - p->yscroll); -} - -static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx, - int dy, int dx, int height, int width, u_int y_break) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - u_int b; - - if (sy < y_break && sy + height > y_break) { - b = y_break - sy; - if (dy < sy) { /* Avoid trashing self */ - fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, - y_break); - fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, - height - b, width, y_break); - } else { - fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, - height - b, width, y_break); - fbcon_bmove_rec(vc, 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(vc, p, sy, sx, dy, dx, b, width, - y_break); - fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, - height - b, width, y_break); - } else { - fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx, - height - b, width, y_break); - fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width, - y_break); - } - return; - } - ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, - height, width); -} - -static void updatescrollmode(struct display *p, - struct fb_info *info, - struct vc_data *vc) -{ - struct fbcon_ops *ops = info->fbcon_par; - int fh = vc->vc_font.height; - int cap = info->flags; - u16 t = 0; - int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep, - info->fix.xpanstep); - int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t); - int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); - int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual, - info->var.xres_virtual); - int good_pan = (cap & FBINFO_HWACCEL_YPAN) && - divides(ypan, vc->vc_font.height) && vyres > yres; - int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) && - divides(ywrap, vc->vc_font.height) && - divides(vc->vc_font.height, vyres) && - divides(vc->vc_font.height, yres); - int reading_fast = cap & FBINFO_READS_FAST; - int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) && - !(cap & FBINFO_HWACCEL_DISABLED); - int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) && - !(cap & FBINFO_HWACCEL_DISABLED); - - p->vrows = vyres/fh; - if (yres > (fh * (vc->vc_rows + 1))) - p->vrows -= (yres - (fh * vc->vc_rows)) / fh; - if ((yres % fh) && (vyres % fh < yres % fh)) - p->vrows--; - - if (good_wrap || good_pan) { - if (reading_fast || fast_copyarea) - p->scrollmode = good_wrap ? - SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE; - else - p->scrollmode = good_wrap ? SCROLL_REDRAW : - SCROLL_PAN_REDRAW; - } else { - if (reading_fast || (fast_copyarea && !fast_imageblit)) - p->scrollmode = SCROLL_MOVE; - else - p->scrollmode = SCROLL_REDRAW; - } -} - -static int fbcon_resize(struct vc_data *vc, unsigned int width, - unsigned int height, unsigned int user) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - struct display *p = &fb_display[vc->vc_num]; - struct fb_var_screeninfo var = info->var; - int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh; - - virt_w = FBCON_SWAP(ops->rotate, width, height); - virt_h = FBCON_SWAP(ops->rotate, height, width); - virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width, - vc->vc_font.height); - virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height, - vc->vc_font.width); - var.xres = virt_w * virt_fw; - var.yres = virt_h * virt_fh; - x_diff = info->var.xres - var.xres; - y_diff = info->var.yres - var.yres; - if (x_diff < 0 || x_diff > virt_fw || - y_diff < 0 || y_diff > virt_fh) { - const struct fb_videomode *mode; - - DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); - mode = fb_find_best_mode(&var, &info->modelist); - if (mode == NULL) - return -EINVAL; - display_to_var(&var, p); - fb_videomode_to_var(&var, mode); - - if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh) - return -EINVAL; - - DPRINTK("resize now %ix%i\n", var.xres, var.yres); - if (con_is_visible(vc)) { - var.activate = FB_ACTIVATE_NOW | - FB_ACTIVATE_FORCE; - fb_set_var(info, &var); - } - var_to_display(p, &info->var, info); - ops->var = info->var; - } - updatescrollmode(p, info, vc); - return 0; -} - -static int fbcon_switch(struct vc_data *vc) -{ - struct fb_info *info, *old_info = NULL; - struct fbcon_ops *ops; - struct display *p = &fb_display[vc->vc_num]; - struct fb_var_screeninfo var; - int i, ret, prev_console, charcnt = 256; - - info = registered_fb[con2fb_map[vc->vc_num]]; - ops = info->fbcon_par; - - if (softback_top) { - if (softback_lines) - fbcon_set_origin(vc); - softback_top = softback_curr = softback_in = softback_buf; - softback_lines = 0; - fbcon_update_softback(vc); - } - - 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 = FBCON_LOGO_CANSHOW; - } - - prev_console = ops->currcon; - if (prev_console != -1) - old_info = registered_fb[con2fb_map[prev_console]]; - /* - * FIXME: If we have multiple fbdev's loaded, we need to - * update all info->currcon. Perhaps, we can place this - * in a centralized structure, but this might break some - * drivers. - * - * info->currcon = vc->vc_num; - */ - for (i = 0; i < FB_MAX; i++) { - if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) { - struct fbcon_ops *o = registered_fb[i]->fbcon_par; - - o->currcon = vc->vc_num; - } - } - memset(&var, 0, sizeof(struct fb_var_screeninfo)); - display_to_var(&var, p); - var.activate = FB_ACTIVATE_NOW; - - /* - * make sure we don't unnecessarily trip the memcmp() - * in fb_set_var() - */ - info->var.activate = var.activate; - var.vmode |= info->var.vmode & ~FB_VMODE_MASK; - fb_set_var(info, &var); - ops->var = info->var; - - if (old_info != NULL && (old_info != info || - info->flags & FBINFO_MISC_ALWAYS_SETPAR)) { - if (info->fbops->fb_set_par) { - ret = info->fbops->fb_set_par(info); - - if (ret) - printk(KERN_ERR "fbcon_switch: detected " - "unhandled fb_set_par error, " - "error code %d\n", ret); - } - - if (old_info != info) - fbcon_del_cursor_timer(old_info); - } - - if (fbcon_is_inactive(vc, info) || - ops->blank_state != FB_BLANK_UNBLANK) - fbcon_del_cursor_timer(info); - else - fbcon_add_cursor_timer(info); - - set_blitting_type(vc, info); - ops->cursor_reset = 1; - - if (ops->rotate_font && ops->rotate_font(info, vc)) { - ops->rotate = FB_ROTATE_UR; - set_blitting_type(vc, info); - } - - vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); - vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; - - if (p->userfont) - charcnt = FNTCHARCNT(vc->vc_font.data); - - if (charcnt > 256) - vc->vc_complement_mask <<= 1; - - updatescrollmode(p, info, vc); - - switch (p->scrollmode) { - case SCROLL_WRAP_MOVE: - scrollback_phys_max = p->vrows - vc->vc_rows; - break; - case SCROLL_PAN_MOVE: - case SCROLL_PAN_REDRAW: - scrollback_phys_max = p->vrows - 2 * vc->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 (!fbcon_is_inactive(vc, info)) { - ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; - ops->update_start(info); - } - - fbcon_set_palette(vc, color_table); - fbcon_clear_margins(vc, 0); - - if (logo_shown == FBCON_LOGO_DRAW) { - - logo_shown = fg_console; - /* This is protected above by initmem_freed */ - fb_show_logo(info, ops->rotate); - update_region(vc, - vc->vc_origin + vc->vc_size_row * vc->vc_top, - vc->vc_size_row * (vc->vc_bottom - - vc->vc_top) / 2); - return 0; - } - return 1; -} - -static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, - int blank) -{ - struct fb_event event; - - if (blank) { - unsigned short charmask = vc->vc_hi_font_mask ? - 0x1ff : 0xff; - unsigned short oldc; - - oldc = vc->vc_video_erase_char; - vc->vc_video_erase_char &= charmask; - fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols); - vc->vc_video_erase_char = oldc; - } - - - if (!lock_fb_info(info)) - return; - event.info = info; - event.data = ␣ - fb_notifier_call_chain(FB_EVENT_CONBLANK, &event); - unlock_fb_info(info); -} - -static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - - if (mode_switch) { - struct fb_var_screeninfo var = info->var; - - ops->graphics = 1; - - if (!blank) { - var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; - fb_set_var(info, &var); - ops->graphics = 0; - ops->var = info->var; - } - } - - if (!fbcon_is_inactive(vc, info)) { - if (ops->blank_state != blank) { - ops->blank_state = blank; - fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); - ops->cursor_flash = (!blank); - - if (!(info->flags & FBINFO_MISC_USEREVENT)) - if (fb_blank(info, blank)) - fbcon_generic_blank(vc, info, blank); - } - - if (!blank) - update_screen(vc); - } - - if (mode_switch || fbcon_is_inactive(vc, info) || - ops->blank_state != FB_BLANK_UNBLANK) - fbcon_del_cursor_timer(info); - else - fbcon_add_cursor_timer(info); - - return 0; -} - -static int fbcon_debug_enter(struct vc_data *vc) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - - ops->save_graphics = ops->graphics; - ops->graphics = 0; - if (info->fbops->fb_debug_enter) - info->fbops->fb_debug_enter(info); - fbcon_set_palette(vc, color_table); - return 0; -} - -static int fbcon_debug_leave(struct vc_data *vc) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - - ops->graphics = ops->save_graphics; - if (info->fbops->fb_debug_leave) - info->fbops->fb_debug_leave(info); - return 0; -} - -static int fbcon_get_font(struct vc_data *vc, struct console_font *font) -{ - u8 *fontdata = vc->vc_font.data; - u8 *data = font->data; - int i, j; - - font->width = vc->vc_font.width; - font->height = vc->vc_font.height; - font->charcount = vc->vc_hi_font_mask ? 512 : 256; - if (!font->data) - return 0; - - if (font->width <= 8) { - j = vc->vc_font.height; - for (i = 0; i < font->charcount; i++) { - memcpy(data, fontdata, j); - memset(data + j, 0, 32 - j); - data += 32; - fontdata += j; - } - } else if (font->width <= 16) { - j = vc->vc_font.height * 2; - for (i = 0; i < font->charcount; i++) { - memcpy(data, fontdata, j); - memset(data + j, 0, 64 - j); - data += 64; - fontdata += j; - } - } else if (font->width <= 24) { - for (i = 0; i < font->charcount; i++) { - for (j = 0; j < vc->vc_font.height; 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 = vc->vc_font.height * 4; - for (i = 0; i < font->charcount; i++) { - memcpy(data, fontdata, j); - memset(data + j, 0, 128 - j); - data += 128; - fontdata += j; - } - } - return 0; -} - -/* set/clear vc_hi_font_mask and update vc attrs accordingly */ -static void set_vc_hi_font(struct vc_data *vc, bool set) -{ - if (!set) { - vc->vc_hi_font_mask = 0; - if (vc->vc_can_do_color) { - vc->vc_complement_mask >>= 1; - vc->vc_s_complement_mask >>= 1; - } - - /* ++Edmund: reorder the attribute bits */ - if (vc->vc_can_do_color) { - unsigned short *cp = - (unsigned short *) vc->vc_origin; - int count = vc->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 = vc->vc_video_erase_char; - vc->vc_video_erase_char = - ((c & 0xfe00) >> 1) | (c & 0xff); - vc->vc_attr >>= 1; - } - } else { - vc->vc_hi_font_mask = 0x100; - if (vc->vc_can_do_color) { - vc->vc_complement_mask <<= 1; - vc->vc_s_complement_mask <<= 1; - } - - /* ++Edmund: reorder the attribute bits */ - { - unsigned short *cp = - (unsigned short *) vc->vc_origin; - int count = vc->vc_screenbuf_size / 2; - unsigned short c; - for (; count > 0; count--, cp++) { - unsigned short newc; - c = scr_readw(cp); - if (vc->vc_can_do_color) - newc = - ((c & 0xff00) << 1) | (c & - 0xff); - else - newc = c & ~0x100; - scr_writew(newc, cp); - } - c = vc->vc_video_erase_char; - if (vc->vc_can_do_color) { - vc->vc_video_erase_char = - ((c & 0xff00) << 1) | (c & 0xff); - vc->vc_attr <<= 1; - } else - vc->vc_video_erase_char = c & ~0x100; - } - } -} - -static int fbcon_do_set_font(struct vc_data *vc, int w, int h, - const u8 * data, int userfont) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - struct fbcon_ops *ops = info->fbcon_par; - struct display *p = &fb_display[vc->vc_num]; - int resize; - int cnt; - char *old_data = NULL; - - if (con_is_visible(vc) && softback_lines) - fbcon_set_origin(vc); - - resize = (w != vc->vc_font.width) || (h != vc->vc_font.height); - if (p->userfont) - old_data = vc->vc_font.data; - if (userfont) - cnt = FNTCHARCNT(data); - else - cnt = 256; - vc->vc_font.data = (void *)(p->fontdata = data); - if ((p->userfont = userfont)) - REFCOUNT(data)++; - vc->vc_font.width = w; - vc->vc_font.height = h; - if (vc->vc_hi_font_mask && cnt == 256) - set_vc_hi_font(vc, false); - else if (!vc->vc_hi_font_mask && cnt == 512) - set_vc_hi_font(vc, true); - - if (resize) { - int cols, rows; - - cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); - rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); - cols /= w; - rows /= h; - vc_resize(vc, cols, rows); - if (con_is_visible(vc) && softback_buf) - fbcon_update_softback(vc); - } else if (con_is_visible(vc) - && vc->vc_mode == KD_TEXT) { - fbcon_clear_margins(vc, 0); - update_screen(vc); - } - - if (old_data && (--REFCOUNT(old_data) == 0)) - kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); - return 0; -} - -static int fbcon_copy_font(struct vc_data *vc, int con) -{ - struct display *od = &fb_display[con]; - struct console_font *f = &vc->vc_font; - - if (od->fontdata == f->data) - return 0; /* already the same font... */ - return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont); -} - -/* - * User asked to set font; we are guaranteed that - * a) width and height are in range 1..32 - * b) charcount does not exceed 512 - * but lets not assume that, since someone might someday want to use larger - * fonts. And charcount of 512 is small for unicode support. - * - * However, user space gives the font in 32 rows , regardless of - * actual font height. So a new API is needed if support for larger fonts - * is ever implemented. - */ - -static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - unsigned charcount = font->charcount; - int w = font->width; - int h = font->height; - int size; - int i, csum; - u8 *new_data, *data = font->data; - int pitch = (font->width+7) >> 3; - - /* Is there a reason why fbconsole couldn't handle any charcount >256? - * If not this check should be changed to charcount < 256 */ - if (charcount != 256 && charcount != 512) - return -EINVAL; - - /* Make sure drawing engine can handle the font */ - if (!(info->pixmap.blit_x & (1 << (font->width - 1))) || - !(info->pixmap.blit_y & (1 << (font->height - 1)))) - return -EINVAL; - - /* Make sure driver can handle the font length */ - if (fbcon_invalid_charcount(info, charcount)) - return -EINVAL; - - size = h * pitch * charcount; - - new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER); - - if (!new_data) - return -ENOMEM; - - new_data += FONT_EXTRA_WORDS * sizeof(int); - FNTSIZE(new_data) = size; - FNTCHARCNT(new_data) = charcount; - REFCOUNT(new_data) = 0; /* usage counter */ - for (i=0; i< charcount; i++) { - memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch); - } - - /* Since linux has a nice crc32 function use it for counting font - * checksums. */ - csum = crc32(0, new_data, size); - - FNTSUM(new_data) = csum; - /* Check if the same font is on some other console already */ - for (i = first_fb_vc; i <= last_fb_vc; i++) { - struct vc_data *tmp = vc_cons[i].d; - - if (fb_display[i].userfont && - fb_display[i].fontdata && - FNTSUM(fb_display[i].fontdata) == csum && - FNTSIZE(fb_display[i].fontdata) == size && - tmp->vc_font.width == w && - !memcmp(fb_display[i].fontdata, new_data, size)) { - kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); - new_data = (u8 *)fb_display[i].fontdata; - break; - } - } - return fbcon_do_set_font(vc, font->width, font->height, new_data, 1); -} - -static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - const struct font_desc *f; - - if (!name) - f = get_default_font(info->var.xres, info->var.yres, - info->pixmap.blit_x, info->pixmap.blit_y); - else if (!(f = find_font(name))) - return -ENOENT; - - font->width = f->width; - font->height = f->height; - return fbcon_do_set_font(vc, f->width, f->height, f->data, 0); -} - -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 void fbcon_set_palette(struct vc_data *vc, const unsigned char *table) -{ - struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]]; - int i, j, k, depth; - u8 val; - - if (fbcon_is_inactive(vc, info)) - return; - - if (!con_is_visible(vc)) - return; - - depth = fb_get_color_depth(&info->var, &info->fix); - if (depth > 3) { - for (i = j = 0; i < 16; i++) { - k = table[i]; - val = vc->vc_palette[j++]; - palette_red[k] = (val << 8) | val; - val = vc->vc_palette[j++]; - palette_green[k] = (val << 8) | val; - val = vc->vc_palette[j++]; - palette_blue[k] = (val << 8) | val; - } - palette_cmap.len = 16; - palette_cmap.start = 0; - /* - * If framebuffer is capable of less than 16 colors, - * use default palette of fbcon. - */ - } else - fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap); - - fb_set_cmap(&palette_cmap, info); -} - -static u16 *fbcon_screen_pos(struct vc_data *vc, int offset) -{ - unsigned long p; - int line; - - if (vc->vc_num != fg_console || !softback_lines) - return (u16 *) (vc->vc_origin + offset); - line = offset / vc->vc_size_row; - if (line >= softback_lines) - return (u16 *) (vc->vc_origin + offset - - softback_lines * vc->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 *vc, unsigned long pos, - int *px, int *py) -{ - unsigned long ret; - int x, y; - - if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { - unsigned long offset = (pos - vc->vc_origin) / 2; - - x = offset % vc->vc_cols; - y = offset / vc->vc_cols; - if (vc->vc_num == fg_console) - y += softback_lines; - ret = pos + (vc->vc_cols - x) * 2; - } else if (vc->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 % vc->vc_cols; - y = offset / vc->vc_cols; - ret = pos + (vc->vc_cols - x) * 2; - if (ret == softback_end) - ret = softback_buf; - if (ret == softback_in) - ret = vc->vc_origin; - } else { - /* Should not happen */ - x = y = 0; - ret = vc->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 *vc, u16 * p, int cnt) -{ - while (cnt--) { - u16 a = scr_readw(p); - if (!vc->vc_can_do_color) - a ^= 0x0800; - else if (vc->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 *) vc->vc_origin; - } -} - -static void fbcon_scrolldelta(struct vc_data *vc, int lines) -{ - struct fb_info *info = registered_fb[con2fb_map[fg_console]]; - struct fbcon_ops *ops = info->fbcon_par; - struct display *disp = &fb_display[fg_console]; - int offset, limit, scrollback_old; - - if (softback_top) { - if (vc->vc_num != fg_console) - return; - if (vc->vc_mode != KD_TEXT || !lines) - return; - 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 == vc->vc_num) { - unsigned long p, q; - int i; - - p = softback_in; - q = vc->vc_origin + - logo_lines * vc->vc_size_row; - for (i = 0; i < logo_lines; i++) { - if (p == softback_top) - break; - if (p == softback_buf) - p = softback_end; - p -= vc->vc_size_row; - q -= vc->vc_size_row; - scr_memcpyw((u16 *) q, (u16 *) p, - vc->vc_size_row); - } - softback_in = softback_curr = p; - update_region(vc, vc->vc_origin, - logo_lines * vc->vc_cols); - } - logo_shown = FBCON_LOGO_CANSHOW; - } - fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); - fbcon_redraw_softback(vc, disp, lines); - fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK); - return; - } - - if (!scrollback_phys_max) - return; - - 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; - - if (fbcon_is_inactive(vc, info)) - return; - - fbcon_cursor(vc, CM_ERASE); - - offset = disp->yscroll - scrollback_current; - limit = disp->vrows; - switch (disp->scrollmode) { - case SCROLL_WRAP_MOVE: - info->var.vmode |= FB_VMODE_YWRAP; - break; - case SCROLL_PAN_MOVE: - case SCROLL_PAN_REDRAW: - limit -= vc->vc_rows; - info->var.vmode &= ~FB_VMODE_YWRAP; - break; - } - if (offset < 0) - offset += limit; - else if (offset >= limit) - offset -= limit; - - ops->var.xoffset = 0; - ops->var.yoffset = offset * vc->vc_font.height; - ops->update_start(info); - - if (!scrollback_current) - fbcon_cursor(vc, CM_DRAW); -} - -static int fbcon_set_origin(struct vc_data *vc) -{ - if (softback_lines) - fbcon_scrolldelta(vc, softback_lines); - return 0; -} - -static void fbcon_suspended(struct fb_info *info) -{ - struct vc_data *vc = NULL; - struct fbcon_ops *ops = info->fbcon_par; - - if (!ops || ops->currcon < 0) - return; - vc = vc_cons[ops->currcon].d; - - /* Clear cursor, restore saved data */ - fbcon_cursor(vc, CM_ERASE); -} - -static void fbcon_resumed(struct fb_info *info) -{ - struct vc_data *vc; - struct fbcon_ops *ops = info->fbcon_par; - - if (!ops || ops->currcon < 0) - return; - vc = vc_cons[ops->currcon].d; - - update_screen(vc); -} - -static void fbcon_modechanged(struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - struct vc_data *vc; - struct display *p; - int rows, cols; - - if (!ops || ops->currcon < 0) - return; - vc = vc_cons[ops->currcon].d; - if (vc->vc_mode != KD_TEXT || - registered_fb[con2fb_map[ops->currcon]] != info) - return; - - p = &fb_display[vc->vc_num]; - set_blitting_type(vc, info); - - if (con_is_visible(vc)) { - var_to_display(p, &info->var, info); - cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); - rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); - cols /= vc->vc_font.width; - rows /= vc->vc_font.height; - vc_resize(vc, cols, rows); - updatescrollmode(p, info, vc); - scrollback_max = 0; - scrollback_current = 0; - - if (!fbcon_is_inactive(vc, info)) { - ops->var.xoffset = ops->var.yoffset = p->yscroll = 0; - ops->update_start(info); - } - - fbcon_set_palette(vc, color_table); - update_screen(vc); - if (softback_buf) - fbcon_update_softback(vc); - } -} - -static void fbcon_set_all_vcs(struct fb_info *info) -{ - struct fbcon_ops *ops = info->fbcon_par; - struct vc_data *vc; - struct display *p; - int i, rows, cols, fg = -1; - - if (!ops || ops->currcon < 0) - return; - - for (i = first_fb_vc; i <= last_fb_vc; i++) { - vc = vc_cons[i].d; - if (!vc || vc->vc_mode != KD_TEXT || - registered_fb[con2fb_map[i]] != info) - continue; - - if (con_is_visible(vc)) { - fg = i; - continue; - } - - p = &fb_display[vc->vc_num]; - set_blitting_type(vc, info); - var_to_display(p, &info->var, info); - cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); - rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); - cols /= vc->vc_font.width; - rows /= vc->vc_font.height; - vc_resize(vc, cols, rows); - } - - if (fg != -1) - fbcon_modechanged(info); -} - -static int fbcon_mode_deleted(struct fb_info *info, - struct fb_videomode *mode) -{ - struct fb_info *fb_info; - struct display *p; - int i, j, found = 0; - - /* before deletion, ensure that mode is not in use */ - for (i = first_fb_vc; i <= last_fb_vc; i++) { - j = con2fb_map[i]; - if (j == -1) - continue; - fb_info = registered_fb[j]; - if (fb_info != info) - continue; - p = &fb_display[i]; - if (!p || !p->mode) - continue; - if (fb_mode_is_equal(p->mode, mode)) { - found = 1; - break; - } - } - return found; -} - -#ifdef CONFIG_VT_HW_CONSOLE_BINDING -static int fbcon_unbind(void) -{ - int ret; - - ret = do_unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, - fbcon_is_default); - - if (!ret) - fbcon_has_console_bind = 0; - - return ret; -} -#else -static inline int fbcon_unbind(void) -{ - return -EINVAL; -} -#endif /* CONFIG_VT_HW_CONSOLE_BINDING */ - -/* called with console_lock held */ -static int fbcon_fb_unbind(int idx) -{ - int i, new_idx = -1, ret = 0; - - if (!fbcon_has_console_bind) - return 0; - - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map[i] != idx && - con2fb_map[i] != -1) { - new_idx = i; - break; - } - } - - if (new_idx != -1) { - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map[i] == idx) - set_con2fb_map(i, new_idx, 0); - } - } else { - struct fb_info *info = registered_fb[idx]; - - /* This is sort of like set_con2fb_map, except it maps - * the consoles to no device and then releases the - * oldinfo to free memory and cancel the cursor blink - * timer. I can imagine this just becoming part of - * set_con2fb_map where new_idx is -1 - */ - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map[i] == idx) { - con2fb_map[i] = -1; - if (!search_fb_in_map(idx)) { - ret = con2fb_release_oldinfo(vc_cons[i].d, - info, NULL, i, - idx, 0); - if (ret) { - con2fb_map[i] = idx; - return ret; - } - } - } - } - ret = fbcon_unbind(); - } - - return ret; -} - -/* called with console_lock held */ -static int fbcon_fb_unregistered(struct fb_info *info) -{ - int i, idx; - - idx = info->node; - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map[i] == idx) - con2fb_map[i] = -1; - } - - if (idx == info_idx) { - info_idx = -1; - - for (i = 0; i < FB_MAX; i++) { - if (registered_fb[i] != NULL) { - info_idx = i; - break; - } - } - } - - if (info_idx != -1) { - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map[i] == -1) - con2fb_map[i] = info_idx; - } - } - - if (primary_device == idx) - primary_device = -1; - - if (!num_registered_fb) - do_unregister_con_driver(&fb_con); - - return 0; -} - -/* called with console_lock held */ -static void fbcon_remap_all(int idx) -{ - int i; - for (i = first_fb_vc; i <= last_fb_vc; i++) - set_con2fb_map(i, idx, 0); - - if (con_is_bound(&fb_con)) { - printk(KERN_INFO "fbcon: Remapping primary device, " - "fb%i, to tty %i-%i\n", idx, - first_fb_vc + 1, last_fb_vc + 1); - info_idx = idx; - } -} - -#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY -static void fbcon_select_primary(struct fb_info *info) -{ - if (!map_override && primary_device == -1 && - fb_is_primary_device(info)) { - int i; - - printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n", - info->fix.id, info->node); - primary_device = info->node; - - for (i = first_fb_vc; i <= last_fb_vc; i++) - con2fb_map_boot[i] = primary_device; - - if (con_is_bound(&fb_con)) { - printk(KERN_INFO "fbcon: Remapping primary device, " - "fb%i, to tty %i-%i\n", info->node, - first_fb_vc + 1, last_fb_vc + 1); - info_idx = primary_device; - } - } - -} -#else -static inline void fbcon_select_primary(struct fb_info *info) -{ - return; -} -#endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ - -/* called with console_lock held */ -static int fbcon_fb_registered(struct fb_info *info) -{ - int ret = 0, i, idx; - - idx = info->node; - fbcon_select_primary(info); - - if (info_idx == -1) { - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map_boot[i] == idx) { - info_idx = idx; - break; - } - } - - if (info_idx != -1) - ret = do_fbcon_takeover(1); - } else { - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map_boot[i] == idx) - set_con2fb_map(i, idx, 0); - } - } - - return ret; -} - -static void fbcon_fb_blanked(struct fb_info *info, int blank) -{ - struct fbcon_ops *ops = info->fbcon_par; - struct vc_data *vc; - - if (!ops || ops->currcon < 0) - return; - - vc = vc_cons[ops->currcon].d; - if (vc->vc_mode != KD_TEXT || - registered_fb[con2fb_map[ops->currcon]] != info) - return; - - if (con_is_visible(vc)) { - if (blank) - do_blank_screen(0); - else - do_unblank_screen(0); - } - ops->blank_state = blank; -} - -static void fbcon_new_modelist(struct fb_info *info) -{ - int i; - struct vc_data *vc; - struct fb_var_screeninfo var; - const struct fb_videomode *mode; - - for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (registered_fb[con2fb_map[i]] != info) - continue; - if (!fb_display[i].mode) - continue; - vc = vc_cons[i].d; - display_to_var(&var, &fb_display[i]); - mode = fb_find_nearest_mode(fb_display[i].mode, - &info->modelist); - fb_videomode_to_var(&var, mode); - fbcon_set_disp(info, &var, vc->vc_num); - } -} - -static void fbcon_get_requirement(struct fb_info *info, - struct fb_blit_caps *caps) -{ - struct vc_data *vc; - struct display *p; - - if (caps->flags) { - int i, charcnt; - - for (i = first_fb_vc; i <= last_fb_vc; i++) { - vc = vc_cons[i].d; - if (vc && vc->vc_mode == KD_TEXT && - info->node == con2fb_map[i]) { - p = &fb_display[i]; - caps->x |= 1 << (vc->vc_font.width - 1); - caps->y |= 1 << (vc->vc_font.height - 1); - charcnt = (p->userfont) ? - FNTCHARCNT(p->fontdata) : 256; - if (caps->len < charcnt) - caps->len = charcnt; - } - } - } else { - vc = vc_cons[fg_console].d; - - if (vc && vc->vc_mode == KD_TEXT && - info->node == con2fb_map[fg_console]) { - p = &fb_display[fg_console]; - caps->x = 1 << (vc->vc_font.width - 1); - caps->y = 1 << (vc->vc_font.height - 1); - caps->len = (p->userfont) ? - FNTCHARCNT(p->fontdata) : 256; - } - } -} - -static int fbcon_event_notify(struct notifier_block *self, - unsigned long action, void *data) -{ - struct fb_event *event = data; - struct fb_info *info = event->info; - struct fb_videomode *mode; - struct fb_con2fbmap *con2fb; - struct fb_blit_caps *caps; - int idx, ret = 0; - - /* - * ignore all events except driver registration and deregistration - * if fbcon is not active - */ - if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED || - action == FB_EVENT_FB_UNREGISTERED)) - goto done; - - switch(action) { - case FB_EVENT_SUSPEND: - fbcon_suspended(info); - break; - case FB_EVENT_RESUME: - fbcon_resumed(info); - break; - case FB_EVENT_MODE_CHANGE: - fbcon_modechanged(info); - break; - case FB_EVENT_MODE_CHANGE_ALL: - fbcon_set_all_vcs(info); - break; - case FB_EVENT_MODE_DELETE: - mode = event->data; - ret = fbcon_mode_deleted(info, mode); - break; - case FB_EVENT_FB_UNBIND: - idx = info->node; - ret = fbcon_fb_unbind(idx); - break; - case FB_EVENT_FB_REGISTERED: - ret = fbcon_fb_registered(info); - break; - case FB_EVENT_FB_UNREGISTERED: - ret = fbcon_fb_unregistered(info); - break; - case FB_EVENT_SET_CONSOLE_MAP: - /* called with console lock held */ - con2fb = event->data; - ret = set_con2fb_map(con2fb->console - 1, - con2fb->framebuffer, 1); - break; - case FB_EVENT_GET_CONSOLE_MAP: - con2fb = event->data; - con2fb->framebuffer = con2fb_map[con2fb->console - 1]; - break; - case FB_EVENT_BLANK: - fbcon_fb_blanked(info, *(int *)event->data); - break; - case FB_EVENT_NEW_MODELIST: - fbcon_new_modelist(info); - break; - case FB_EVENT_GET_REQ: - caps = event->data; - fbcon_get_requirement(info, caps); - break; - case FB_EVENT_REMAP_ALL_CONSOLE: - idx = info->node; - fbcon_remap_all(idx); - break; - } -done: - return ret; -} - -/* - * The console `switch' structure for the frame buffer based console - */ - -static const struct consw fb_con = { - .owner = THIS_MODULE, - .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_switch = fbcon_switch, - .con_blank = fbcon_blank, - .con_font_set = fbcon_set_font, - .con_font_get = fbcon_get_font, - .con_font_default = fbcon_set_def_font, - .con_font_copy = fbcon_copy_font, - .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, - .con_resize = fbcon_resize, - .con_debug_enter = fbcon_debug_enter, - .con_debug_leave = fbcon_debug_leave, -}; - -static struct notifier_block fbcon_event_notifier = { - .notifier_call = fbcon_event_notify, -}; - -static ssize_t store_rotate(struct device *device, - struct device_attribute *attr, const char *buf, - size_t count) -{ - struct fb_info *info; - int rotate, idx; - char **last = NULL; - - if (fbcon_has_exited) - return count; - - console_lock(); - idx = con2fb_map[fg_console]; - - if (idx == -1 || registered_fb[idx] == NULL) - goto err; - - info = registered_fb[idx]; - rotate = simple_strtoul(buf, last, 0); - fbcon_rotate(info, rotate); -err: - console_unlock(); - return count; -} - -static ssize_t store_rotate_all(struct device *device, - struct device_attribute *attr,const char *buf, - size_t count) -{ - struct fb_info *info; - int rotate, idx; - char **last = NULL; - - if (fbcon_has_exited) - return count; - - console_lock(); - idx = con2fb_map[fg_console]; - - if (idx == -1 || registered_fb[idx] == NULL) - goto err; - - info = registered_fb[idx]; - rotate = simple_strtoul(buf, last, 0); - fbcon_rotate_all(info, rotate); -err: - console_unlock(); - return count; -} - -static ssize_t show_rotate(struct device *device, - struct device_attribute *attr,char *buf) -{ - struct fb_info *info; - int rotate = 0, idx; - - if (fbcon_has_exited) - return 0; - - console_lock(); - idx = con2fb_map[fg_console]; - - if (idx == -1 || registered_fb[idx] == NULL) - goto err; - - info = registered_fb[idx]; - rotate = fbcon_get_rotate(info); -err: - console_unlock(); - return snprintf(buf, PAGE_SIZE, "%d\n", rotate); -} - -static ssize_t show_cursor_blink(struct device *device, - struct device_attribute *attr, char *buf) -{ - struct fb_info *info; - struct fbcon_ops *ops; - int idx, blink = -1; - - if (fbcon_has_exited) - return 0; - - console_lock(); - idx = con2fb_map[fg_console]; - - if (idx == -1 || registered_fb[idx] == NULL) - goto err; - - info = registered_fb[idx]; - ops = info->fbcon_par; - - if (!ops) - goto err; - - blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0; -err: - console_unlock(); - return snprintf(buf, PAGE_SIZE, "%d\n", blink); -} - -static ssize_t store_cursor_blink(struct device *device, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct fb_info *info; - int blink, idx; - char **last = NULL; - - if (fbcon_has_exited) - return count; - - console_lock(); - idx = con2fb_map[fg_console]; - - if (idx == -1 || registered_fb[idx] == NULL) - goto err; - - info = registered_fb[idx]; - - if (!info->fbcon_par) - goto err; - - blink = simple_strtoul(buf, last, 0); - - if (blink) { - fbcon_cursor_noblink = 0; - fbcon_add_cursor_timer(info); - } else { - fbcon_cursor_noblink = 1; - fbcon_del_cursor_timer(info); - } - -err: - console_unlock(); - return count; -} - -static struct device_attribute device_attrs[] = { - __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), - __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), - __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink, - store_cursor_blink), -}; - -static int fbcon_init_device(void) -{ - int i, error = 0; - - fbcon_has_sysfs = 1; - - for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { - error = device_create_file(fbcon_device, &device_attrs[i]); - - if (error) - break; - } - - if (error) { - while (--i >= 0) - device_remove_file(fbcon_device, &device_attrs[i]); - - fbcon_has_sysfs = 0; - } - - return 0; -} - -static void fbcon_start(void) -{ - if (num_registered_fb) { - int i; - - console_lock(); - - for (i = 0; i < FB_MAX; i++) { - if (registered_fb[i] != NULL) { - info_idx = i; - break; - } - } - - do_fbcon_takeover(0); - console_unlock(); - - } -} - -static void fbcon_exit(void) -{ - struct fb_info *info; - int i, j, mapped; - - if (fbcon_has_exited) - return; - - kfree((void *)softback_buf); - softback_buf = 0UL; - - for (i = 0; i < FB_MAX; i++) { - int pending = 0; - - mapped = 0; - info = registered_fb[i]; - - if (info == NULL) - continue; - - if (info->queue.func) - pending = cancel_work_sync(&info->queue); - DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" : - "no")); - - for (j = first_fb_vc; j <= last_fb_vc; j++) { - if (con2fb_map[j] == i) { - mapped = 1; - break; - } - } - - if (mapped) { - if (info->fbops->fb_release) - info->fbops->fb_release(info, 0); - module_put(info->fbops->owner); - - if (info->fbcon_par) { - struct fbcon_ops *ops = info->fbcon_par; - - fbcon_del_cursor_timer(info); - kfree(ops->cursor_src); - kfree(ops->cursor_state.mask); - kfree(info->fbcon_par); - info->fbcon_par = NULL; - } - - if (info->queue.func == fb_flashcursor) - info->queue.func = NULL; - } - } - - fbcon_has_exited = 1; -} - -static int __init fb_console_init(void) -{ - int i; - - console_lock(); - fb_register_client(&fbcon_event_notifier); - fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL, - "fbcon"); - - if (IS_ERR(fbcon_device)) { - printk(KERN_WARNING "Unable to create device " - "for fbcon; errno = %ld\n", - PTR_ERR(fbcon_device)); - fbcon_device = NULL; - } else - fbcon_init_device(); - - for (i = 0; i < MAX_NR_CONSOLES; i++) - con2fb_map[i] = -1; - - console_unlock(); - fbcon_start(); - return 0; -} - -fs_initcall(fb_console_init); - -#ifdef MODULE - -static void __exit fbcon_deinit_device(void) -{ - int i; - - if (fbcon_has_sysfs) { - for (i = 0; i < ARRAY_SIZE(device_attrs); i++) - device_remove_file(fbcon_device, &device_attrs[i]); - - fbcon_has_sysfs = 0; - } -} - -static void __exit fb_console_exit(void) -{ - console_lock(); - fb_unregister_client(&fbcon_event_notifier); - fbcon_deinit_device(); - device_destroy(fb_class, MKDEV(0, 0)); - fbcon_exit(); - do_unregister_con_driver(&fb_con); - console_unlock(); -} - -module_exit(fb_console_exit); - -#endif - -MODULE_LICENSE("GPL"); |