| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Antonino A. Daplas | 9371 | 47.02% | 76 | 30.28% |
| Linus Torvalds (pre-git) | 4992 | 25.05% | 20 | 7.97% |
| James Simmons | 1945 | 9.76% | 38 | 15.14% |
| Andrew Morton | 809 | 4.06% | 8 | 3.19% |
| Krzysztof Helt | 383 | 1.92% | 5 | 1.99% |
| Hans de Goede | 335 | 1.68% | 7 | 2.79% |
| Jesse Barnes | 317 | 1.59% | 2 | 0.80% |
| Takashi Iwai | 262 | 1.31% | 2 | 0.80% |
| Dave Airlie | 158 | 0.79% | 5 | 1.99% |
| Benjamin Herrenschmidt | 135 | 0.68% | 2 | 0.80% |
| David Eger | 116 | 0.58% | 2 | 0.80% |
| Alan Cox | 109 | 0.55% | 1 | 0.40% |
| Keith Packard | 97 | 0.49% | 1 | 0.40% |
| Al Viro | 96 | 0.48% | 7 | 2.79% |
| Florian Tobias Schandinat | 81 | 0.41% | 1 | 0.40% |
| Roman Zippel | 43 | 0.22% | 2 | 0.80% |
| David Lechner | 42 | 0.21% | 1 | 0.40% |
| Andrea Righi | 42 | 0.21% | 2 | 0.80% |
| Jiri Slaby | 38 | 0.19% | 5 | 1.99% |
| Geert Uytterhoeven | 33 | 0.17% | 3 | 1.20% |
| Jan Beulich | 33 | 0.17% | 2 | 0.80% |
| Peter Rosin | 33 | 0.17% | 1 | 0.40% |
| Kees Cook | 32 | 0.16% | 3 | 1.20% |
| Pekka J Enberg | 30 | 0.15% | 1 | 0.40% |
| Linus Torvalds | 29 | 0.15% | 5 | 1.99% |
| Geoff Levand | 26 | 0.13% | 1 | 0.40% |
| Richard Purdie | 25 | 0.13% | 1 | 0.40% |
| Knut Petersen | 25 | 0.13% | 3 | 1.20% |
| Scot Doyle | 25 | 0.13% | 3 | 1.20% |
| Ian Armstrong | 21 | 0.11% | 1 | 0.40% |
| Michal Januszewski | 17 | 0.09% | 3 | 1.20% |
| Yisheng Xie | 17 | 0.09% | 1 | 0.40% |
| Masami Ichikawa | 16 | 0.08% | 2 | 0.80% |
| Dave Jones | 16 | 0.08% | 1 | 0.40% |
| Jean-Philippe Brucker | 16 | 0.08% | 1 | 0.40% |
| Torben Hohn | 14 | 0.07% | 1 | 0.40% |
| David Howells | 12 | 0.06% | 1 | 0.40% |
| Thierry Reding | 12 | 0.06% | 2 | 0.80% |
| Mika Kuoppala | 12 | 0.06% | 1 | 0.40% |
| Johannes Weiner | 10 | 0.05% | 1 | 0.40% |
| Kamal Mostafa | 10 | 0.05% | 1 | 0.40% |
| Dmitry Eremin-Solenikov | 10 | 0.05% | 1 | 0.40% |
| Jan Stourac | 10 | 0.05% | 1 | 0.40% |
| Wang YanQing | 9 | 0.05% | 4 | 1.59% |
| Marcin Ślusarz | 9 | 0.05% | 2 | 0.80% |
| Jarek Poplawski | 7 | 0.04% | 1 | 0.40% |
| Maarten ter Huurne | 7 | 0.04% | 1 | 0.40% |
| Daniel Vetter | 7 | 0.04% | 2 | 0.80% |
| Adrian Bunk | 6 | 0.03% | 1 | 0.40% |
| Paul Cercueil | 6 | 0.03% | 1 | 0.40% |
| Julia Lawall | 4 | 0.02% | 1 | 0.40% |
| Noralf Trönnes | 3 | 0.02% | 1 | 0.40% |
| Greg Kroah-Hartman | 3 | 0.02% | 2 | 0.80% |
| Viresh Kumar | 3 | 0.02% | 1 | 0.40% |
| OGAWA Hirofumi | 2 | 0.01% | 1 | 0.40% |
| David Hollister | 2 | 0.01% | 1 | 0.40% |
| Oleg Nesterov | 2 | 0.01% | 1 | 0.40% |
| Thomas Pfaff | 1 | 0.01% | 1 | 0.40% |
| Olaf Hering | 1 | 0.01% | 1 | 0.40% |
| Harvey Harrison | 1 | 0.01% | 1 | 0.40% |
| Total | 19928 | 251 |
/* * 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/fbcon.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 */ #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER static bool deferred_takeover = true; #else #define deferred_takeover false #endif /* font data */ static char fontname[40]; /* current fb_info */ static int info_idx = -1; /* console rotation */ static int initial_rotation = -1; static int fbcon_has_sysfs; static int margin_color; 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); } 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(struct timer_list *t) { struct fbcon_ops *ops = from_timer(ops, t, cursor_timer); struct fb_info *info = ops->info; 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); timer_setup(&ops->cursor_timer, cursor_timer_handler, 0); 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; } if (!strncmp(options, "margin:", 7)) { options += 7; if (*options) margin_color = simple_strtoul(options, &options, 0); continue; } #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER if (!strcmp(options, "nodefer")) { deferred_takeover = false; continue; } #endif if (!strncmp(options, "logo-pos:", 9)) { options += 9; if (!strcmp(options, "center")) fb_center_logo = true; 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->fbops->owner) { 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(array3_size(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; ops->info = info; 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; WARN_CONSOLE_UNLOCKED(); 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; ops->info = info; info->fbcon_par = ops; p->con_rotate = initial_rotation; if (p->con_rotate == -1) p->con_rotate = info->fbcon_rotate_hint; if (p->con_rotate == -1) p->con_rotate = FB_ROTATE_UR; 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_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; if (p->con_rotate == -1) p->con_rotate = info->fbcon_rotate_hint; if (p->con_rotate == -1) p->con_rotate = FB_ROTATE_UR; 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, margin_color, 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_each_registered_fb(i) { if (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 int 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; WARN_CONSOLE_UNLOCKED(); 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 = con2fb_map[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; WARN_CONSOLE_UNLOCKED(); if (deferred_takeover) return 0; 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_each_registered_fb(i) { 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; WARN_CONSOLE_UNLOCKED(); if (deferred_takeover) { for (i = first_fb_vc; i <= last_fb_vc; i++) con2fb_map_boot[i] = idx; fbcon_map_override(); return; } 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; WARN_CONSOLE_UNLOCKED(); idx = info->node; fbcon_select_primary(info); if (deferred_takeover) { pr_info("fbcon: Deferring console take-over\n"); return 0; } 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; } #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER static void fbcon_register_existing_fbs(struct work_struct *work) { int i; console_lock(); for_each_registered_fb(i) fbcon_fb_registered(registered_fb[i]); console_unlock(); } static struct notifier_block fbcon_output_nb; static DECLARE_WORK(fbcon_deferred_takeover_work, fbcon_register_existing_fbs); static int fbcon_output_notifier(struct notifier_block *nb, unsigned long action, void *data) { WARN_CONSOLE_UNLOCKED(); pr_info("fbcon: Taking over console\n"); dummycon_unregister_output_notifier(&fbcon_output_nb); deferred_takeover = false; logo_shown = FBCON_LOGO_DONTSHOW; /* We may get called in atomic context */ schedule_work(&fbcon_deferred_takeover_work); return NOTIFY_OK; } #endif static void fbcon_start(void) { WARN_CONSOLE_UNLOCKED(); #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER if (conswitchp != &dummy_con) deferred_takeover = false; if (deferred_takeover) { fbcon_output_nb.notifier_call = fbcon_output_notifier; dummycon_register_output_notifier(&fbcon_output_nb); return; } #endif if (num_registered_fb) { int i; for_each_registered_fb(i) { info_idx = i; break; } do_fbcon_takeover(0); } } static void fbcon_exit(void) { struct fb_info *info; int i, j, mapped; if (fbcon_has_exited) return; #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER if (deferred_takeover) { dummycon_unregister_output_notifier(&fbcon_output_nb); deferred_takeover = false; } #endif kfree((void *)softback_buf); softback_buf = 0UL; for_each_registered_fb(i) { int pending = 0; mapped = 0; info = registered_fb[i]; 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; } void __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; fbcon_start(); console_unlock(); } #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; } } 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(); } #endif
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