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author | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-06-28 20:06:39 +0200 |
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committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-06-28 20:06:39 +0200 |
commit | f28e71617ddaf2483e3e5c5237103484a303743f (patch) | |
tree | 67627d2d8ddbf6a4449371e9261d796c013b1fa1 /drivers/video/console/fbcon.c | |
parent | [SCSI] atp870u: reduce huge stack usage (diff) | |
parent | Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/... (diff) | |
download | linux-f28e71617ddaf2483e3e5c5237103484a303743f.tar.xz linux-f28e71617ddaf2483e3e5c5237103484a303743f.zip |
Merge ../linux-2.6/
Conflicts:
drivers/scsi/aacraid/comminit.c
Fixed up by removing the now renamed CONFIG_IOMMU option from
aacraid
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/video/console/fbcon.c')
-rw-r--r-- | drivers/video/console/fbcon.c | 361 |
1 files changed, 311 insertions, 50 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c index 47ba1a79adcd..5dc4083552d8 100644 --- a/drivers/video/console/fbcon.c +++ b/drivers/video/console/fbcon.c @@ -125,6 +125,8 @@ static int softback_lines; 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; + /* font data */ static char fontname[40]; @@ -140,7 +142,6 @@ static const struct consw fb_con; #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) -static void fbcon_free_font(struct display *); static int fbcon_set_origin(struct vc_data *); #define CURSOR_DRAW_DELAY (1) @@ -194,6 +195,9 @@ 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 class_device *fbcon_class_device; #ifdef CONFIG_MAC /* @@ -252,7 +256,7 @@ static void fbcon_rotate_all(struct fb_info *info, u32 rotate) if (!ops || ops->currcon < 0 || rotate > 3) return; - for (i = 0; i < MAX_NR_CONSOLES; i++) { + 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) @@ -389,15 +393,18 @@ static void fb_flashcursor(void *private) int c; int mode; - if (ops->currcon != -1) + acquire_console_sem(); + if (ops && ops->currcon != -1) vc = vc_cons[ops->currcon].d; if (!vc || !CON_IS_VISIBLE(vc) || fbcon_is_inactive(vc, info) || registered_fb[con2fb_map[vc->vc_num]] != info || - vc_cons[ops->currcon].d->vc_deccm != 1) + vc_cons[ops->currcon].d->vc_deccm != 1) { + release_console_sem(); return; - acquire_console_sem(); + } + p = &fb_display[vc->vc_num]; c = scr_readw((u16 *) vc->vc_pos); mode = (!ops->cursor_flash || ops->cursor_state.enable) ? @@ -528,7 +535,7 @@ static int search_fb_in_map(int idx) { int i, retval = 0; - for (i = 0; i < MAX_NR_CONSOLES; i++) { + for (i = first_fb_vc; i <= last_fb_vc; i++) { if (con2fb_map[i] == idx) retval = 1; } @@ -539,7 +546,7 @@ static int search_for_mapped_con(void) { int i, retval = 0; - for (i = 0; i < MAX_NR_CONSOLES; i++) { + for (i = first_fb_vc; i <= last_fb_vc; i++) { if (con2fb_map[i] != -1) retval = 1; } @@ -561,6 +568,7 @@ static int fbcon_takeover(int show_logo) 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; @@ -795,8 +803,8 @@ static int set_con2fb_map(int unit, int newidx, int user) if (oldidx == newidx) return 0; - if (!info) - err = -EINVAL; + if (!info || fbcon_has_exited) + return -EINVAL; if (!err && !search_for_mapped_con()) { info_idx = newidx; @@ -832,6 +840,9 @@ static int set_con2fb_map(int unit, int newidx, int user) con2fb_init_display(vc, info, unit, show_logo); } + if (!search_fb_in_map(info_idx)) + info_idx = newidx; + release_console_sem(); return err; } @@ -1034,6 +1045,7 @@ static const char *fbcon_startup(void) #endif /* CONFIG_MAC */ fbcon_add_cursor_timer(info); + fbcon_has_exited = 0; return display_desc; } @@ -1061,17 +1073,36 @@ static void fbcon_init(struct vc_data *vc, int init) /* If we are not the first console on this fb, copy the font from that console */ - 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)++; + 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); + 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) { @@ -1145,13 +1176,47 @@ static void fbcon_init(struct vc_data *vc, int init) 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; - if (info_idx != -1) - return; 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; } /* ====================================================================== */ @@ -2099,12 +2164,11 @@ static int fbcon_switch(struct vc_data *vc) if (info->fbops->fb_set_par) info->fbops->fb_set_par(info); - if (old_info != info) { + if (old_info != info) fbcon_del_cursor_timer(old_info); - fbcon_add_cursor_timer(info); - } } + fbcon_add_cursor_timer(info); set_blitting_type(vc, info); ops->cursor_reset = 1; @@ -2222,14 +2286,6 @@ static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) return 0; } -static void fbcon_free_font(struct display *p) -{ - if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) - kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); - p->fontdata = NULL; - p->userfont = 0; -} - static int fbcon_get_font(struct vc_data *vc, struct console_font *font) { u8 *fontdata = vc->vc_font.data; @@ -2443,7 +2499,7 @@ static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigne FNTSUM(new_data) = csum; /* Check if the same font is on some other console already */ - for (i = 0; i < MAX_NR_CONSOLES; i++) { + for (i = first_fb_vc; i <= last_fb_vc; i++) { struct vc_data *tmp = vc_cons[i].d; if (fb_display[i].userfont && @@ -2768,7 +2824,7 @@ static void fbcon_set_all_vcs(struct fb_info *info) if (!ops || ops->currcon < 0) return; - for (i = 0; i < MAX_NR_CONSOLES; i++) { + 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) @@ -2830,22 +2886,57 @@ static int fbcon_mode_deleted(struct fb_info *info, return found; } +static int fbcon_fb_unregistered(int idx) +{ + int i; + + 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 (!num_registered_fb) + unregister_con_driver(&fb_con); + + return 0; +} + static int fbcon_fb_registered(int idx) { int ret = 0, i; if (info_idx == -1) { - for (i = 0; i < MAX_NR_CONSOLES; i++) { + 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 = 0; i < MAX_NR_CONSOLES; i++) { - if (con2fb_map_boot[i] == idx) + for (i = first_fb_vc; i <= last_fb_vc; i++) { + if (con2fb_map_boot[i] == idx && + con2fb_map[i] == -1) set_con2fb_map(i, idx, 0); } } @@ -2882,7 +2973,7 @@ static void fbcon_new_modelist(struct fb_info *info) struct fb_var_screeninfo var; struct fb_videomode *mode; - for (i = 0; i < MAX_NR_CONSOLES; i++) { + for (i = first_fb_vc; i <= last_fb_vc; i++) { if (registered_fb[con2fb_map[i]] != info) continue; if (!fb_display[i].mode) @@ -2910,6 +3001,14 @@ static int fbcon_event_notify(struct notifier_block *self, struct fb_con2fbmap *con2fb; int 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); @@ -2930,6 +3029,9 @@ static int fbcon_event_notify(struct notifier_block *self, case FB_EVENT_FB_REGISTERED: ret = fbcon_fb_registered(info->node); break; + case FB_EVENT_FB_UNREGISTERED: + ret = fbcon_fb_unregistered(info->node); + break; case FB_EVENT_SET_CONSOLE_MAP: con2fb = event->data; ret = set_con2fb_map(con2fb->console - 1, @@ -2945,16 +3047,9 @@ static int fbcon_event_notify(struct notifier_block *self, case FB_EVENT_NEW_MODELIST: fbcon_new_modelist(info); break; - case FB_EVENT_SET_CON_ROTATE: - fbcon_rotate(info, *(int *)event->data); - break; - case FB_EVENT_GET_CON_ROTATE: - ret = fbcon_get_rotate(info); - break; - case FB_EVENT_SET_CON_ROTATE_ALL: - fbcon_rotate_all(info, *(int *)event->data); } +done: return ret; } @@ -2992,27 +3087,181 @@ static struct notifier_block fbcon_event_notifier = { .notifier_call = fbcon_event_notify, }; -static int __init fb_console_init(void) +static ssize_t store_rotate(struct class_device *class_device, + const char *buf, size_t count) { - int i; + struct fb_info *info; + int rotate, idx; + char **last = NULL; + + if (fbcon_has_exited) + return count; acquire_console_sem(); - fb_register_client(&fbcon_event_notifier); + 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; +} - for (i = 0; i < MAX_NR_CONSOLES; i++) - con2fb_map[i] = -1; +static ssize_t store_rotate_all(struct class_device *class_device, + 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 class_device *class_device, 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 struct class_device_attribute class_device_attrs[] = { + __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), + __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all), +}; + +static int fbcon_init_class_device(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++) + class_device_create_file(fbcon_class_device, + &class_device_attrs[i]); + 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; + +#ifdef CONFIG_ATARI + free_irq(IRQ_AUTO_4, fbcon_vbl_handler); +#endif +#ifdef CONFIG_MAC + if (MACH_IS_MAC && vbl_detected) + free_irq(IRQ_MAC_VBL, fbcon_vbl_handler); +#endif + + kfree((void *)softback_buf); + softback_buf = 0UL; + + for (i = 0; i < FB_MAX; i++) { + mapped = 0; + info = registered_fb[i]; + + if (info == NULL) + continue; + + 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) { + fbcon_del_cursor_timer(info); + 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_class_device = + class_device_create(fb_class, NULL, MKDEV(0, 0), NULL, "fbcon"); + + if (IS_ERR(fbcon_class_device)) { + printk(KERN_WARNING "Unable to create class_device " + "for fbcon; errno = %ld\n", + PTR_ERR(fbcon_class_device)); + fbcon_class_device = NULL; + } else + fbcon_init_class_device(); + + for (i = 0; i < MAX_NR_CONSOLES; i++) + con2fb_map[i] = -1; + + release_console_sem(); + fbcon_start(); return 0; } @@ -3020,12 +3269,24 @@ module_init(fb_console_init); #ifdef MODULE +static void __exit fbcon_deinit_class_device(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++) + class_device_remove_file(fbcon_class_device, + &class_device_attrs[i]); +} + static void __exit fb_console_exit(void) { acquire_console_sem(); fb_unregister_client(&fbcon_event_notifier); + fbcon_deinit_class_device(); + class_device_destroy(fb_class, MKDEV(0, 0)); + fbcon_exit(); release_console_sem(); - give_up_console(&fb_con); + unregister_con_driver(&fb_con); } module_exit(fb_console_exit); |