| /* |
| * 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 <asm/system.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; |
| |
| #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 *); |
| |
| #define CURSOR_DRAW_DELAY (1) |
| |
| static int vbl_cursor_cnt; |
| 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 int fbcon_scroll(struct vc_data *vc, int t, int b, int dir, |
| int count); |
| 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 int fbcon_set_palette(struct vc_data *vc, unsigned char *table); |
| static int fbcon_scrolldelta(struct vc_data *vc, int lines); |
| |
| /* |
| * 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 inline 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 display *p; |
| struct vc_data *vc = NULL; |
| int c; |
| int mode; |
| |
| acquire_console_sem(); |
| 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) { |
| release_console_sem(); |
| return; |
| } |
| |
| p = &fb_display[vc->vc_num]; |
| 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)); |
| release_console_sem(); |
| } |
| |
| 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; |
| |
| schedule_work(&info->queue); |
| mod_timer(&ops->cursor_timer, jiffies + HZ/5); |
| } |
| |
| 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); |
| |
| init_timer(&ops->cursor_timer); |
| ops->cursor_timer.function = cursor_timer_handler; |
| ops->cursor_timer.expires = jiffies + HZ / 5; |
| ops->cursor_timer.data = (unsigned long ) info; |
| add_timer(&ops->cursor_timer); |
| 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)) |
| strcpy(fontname, options + 5); |
| |
| 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; |
| options++; |
| } |
| if (*options != ',') |
| return 1; |
| options++; |
| } else |
| return 1; |
| } |
| |
| 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(); |
| } |
| |
| return 1; |
| } |
| |
| 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; |
| } |
| |
| if (!strncmp(options, "rotate:", 7)) { |
| options += 7; |
| if (*options) |
| initial_rotation = simple_strtoul(options, &options, 0); |
| if (initial_rotation > 3) |
| initial_rotation = 0; |
| } |
| } |
| 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 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 = 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; |
| } |
| |
| 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) { |
| 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->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->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. |
| */ |
| 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 || fbcon_has_exited) |
| return -EINVAL; |
| |
| if (!err && !search_for_mapped_con()) { |
| info_idx = newidx; |
| return fbcon_takeover(0); |
| } |
| |
| if (oldidx != -1) |
| oldinfo = registered_fb[oldidx]; |
| |
| found = search_fb_in_map(newidx); |
| |
| acquire_console_sem(); |
| 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; |
| |
| release_console_sem(); |
| return err; |
| } |
| |
| /* |
| * Low Level Operations |
| */ |
| /* NOTE: fbcon cannot be __init: it may be called from 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; |
| 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) { |
| 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 */ |
| } |
| |
| 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; |
| 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) |
| { |
| if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) |
| kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); |
| p->fontdata = NULL; |
| p->userfont = 0; |
| } |
| |
| 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; |
| |
| fbcon_free_font(p); |
| idx = con2fb_map[vc->vc_num]; |
| |
| if (idx == -1) |
| goto finished; |
| |
| info = registered_fb[idx]; |
| |
| if (!info) |
| goto finished; |
| |
| ops = info->fbcon_par; |
| |
| if (!ops) |
| goto finished; |
| |
| if (CON_IS_VISIBLE(vc)) |
| fbcon_del_cursor_timer(info); |
| |
| ops->flags &= ~FBCON_FLAGS_INIT; |
| finished: |
| |
| 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; |
| |
| /* 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); |
| |
| 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)); |
| vbl_cursor_cnt = CURSOR_DRAW_DELAY; |
| } |
| |
| 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 int fbcon_scroll(struct vc_data *vc, int t, int b, int dir, |
| 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 -EINVAL; |
| |
| 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 1; |
| 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 1; |
| } |
| 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 1; |
| 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 1; |
| } |
| } |
| return 0; |
| } |
| |
| |
| 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) { |
| if (info->fbops->fb_save_state) |
| info->fbops->fb_save_state(info); |
| var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; |
| fb_set_var(info, &var); |
| ops->graphics = 0; |
| ops->var = info->var; |
| } else if (info->fbops->fb_restore_state) |
| info->fbops->fb_restore_state(info); |
| } |
| |
| 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_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; |
| } |
| |
| 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) { |
| 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 if (!vc->vc_hi_font_mask && cnt == 512) { |
| 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; |
| } |
| |
| } |
| |
| 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 int fbcon_set_palette(struct vc_data *vc, 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 -EINVAL; |
| |
| if (!CON_IS_VISIBLE(vc)) |
| return 0; |
| |
| 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); |
| |
| return 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 int 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 0; |
| if (vc->vc_mode != KD_TEXT || !lines) |
| return 0; |
| if (logo_shown >= 0) { |
| struct vc_data *conp2 = vc_cons[logo_shown].d; |
| |
| if (conp2->vc_top == logo_lines |
| && conp2->vc_bottom == conp2->vc_rows) |
| conp2->vc_top = 0; |
| if (logo_shown == 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 0; |
| } |
| |
| if (!scrollback_phys_max) |
| return -ENOSYS; |
| |
| scrollback_old = scrollback_current; |
| scrollback_current -= lines; |
| if (scrollback_current < 0) |
| scrollback_current = 0; |
| else if (scrollback_current > scrollback_max) |
| scrollback_current = scrollback_max; |
| if (scrollback_current == scrollback_old) |
| return 0; |
| |
| if (fbcon_is_inactive(vc, info)) |
| return 0; |
| |
| 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); |
| return 0; |
| } |
| |
| 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 = unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc, |
| fbcon_is_default); |
| return ret; |
| } |
| #else |
| static inline int fbcon_unbind(void) |
| { |
| return -EINVAL; |
| } |
| #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ |
| |
| static int fbcon_fb_unbind(int idx) |
| { |
| int i, new_idx = -1, ret = 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 |
| ret = fbcon_unbind(); |
| |
| return ret; |
| } |
| |
| 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) |
| unregister_con_driver(&fb_con); |
| |
| return 0; |
| } |
| |
| #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 */ |
| |
| 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 = 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: |
| 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; |
| } |
| 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_bmove = fbcon_bmove, |
| .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, |
| }; |
| |
| 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; |
| |
| acquire_console_sem(); |
| 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: |
| release_console_sem(); |
| 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; |
| |
| acquire_console_sem(); |
| 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: |
| release_console_sem(); |
| 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; |
| |
| acquire_console_sem(); |
| idx = con2fb_map[fg_console]; |
| |
| if (idx == -1 || registered_fb[idx] == NULL) |
| goto err; |
| |
| info = registered_fb[idx]; |
| rotate = fbcon_get_rotate(info); |
| err: |
| release_console_sem(); |
| 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; |
| |
| acquire_console_sem(); |
| 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: |
| release_console_sem(); |
| 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; |
| |
| acquire_console_sem(); |
| 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: |
| release_console_sem(); |
| 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; |
| |
| acquire_console_sem(); |
| |
| for (i = 0; i < FB_MAX; i++) { |
| if (registered_fb[i] != NULL) { |
| info_idx = i; |
| break; |
| } |
| } |
| |
| release_console_sem(); |
| fbcon_takeover(0); |
| } |
| } |
| |
| 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; |
| |
| mapped = 0; |
| info = registered_fb[i]; |
| |
| if (info == NULL) |
| continue; |
| |
| 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; |
| } |
| |
| 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(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; |
| |
| acquire_console_sem(); |
| 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; |
| |
| release_console_sem(); |
| fbcon_start(); |
| return 0; |
| } |
| |
| module_init(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) |
| { |
| acquire_console_sem(); |
| fb_unregister_client(&fbcon_event_notifier); |
| fbcon_deinit_device(); |
| device_destroy(fb_class, MKDEV(0, 0)); |
| fbcon_exit(); |
| release_console_sem(); |
| unregister_con_driver(&fb_con); |
| } |
| |
| module_exit(fb_console_exit); |
| |
| #endif |
| |
| MODULE_LICENSE("GPL"); |