/* * 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 * * 2001 - Documented with DocBook * - Brad Douglas * * 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 #include #include #include #include #include #include /* MSch: for IRQ probe */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_ATARI #include #endif #ifdef CONFIG_MAC #include #endif #if defined(__mc68000__) || defined(CONFIG_APUS) #include #include #endif #include "fbcon.h" #ifdef FBCONDEBUG # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args) #else # define DPRINTK(fmt, args...) #endif struct display fb_display[MAX_NR_CONSOLES]; char con2fb_map[MAX_NR_CONSOLES]; static int logo_height; static int logo_lines; static int logo_shown = -1; /* Software scrollback */ int fbcon_softback_size = 32768; static unsigned long softback_buf, softback_curr; static unsigned long softback_in; static unsigned long softback_top, softback_end; static int softback_lines; /* console mappings */ static int first_fb_vc; static int last_fb_vc = MAX_NR_CONSOLES - 1; static int fbcon_is_default = 1; /* font data */ static char fontname[40]; #define REFCOUNT(fd) (((int *)(fd))[-1]) #define FNTSIZE(fd) (((int *)(fd))[-2]) #define FNTCHARCNT(fd) (((int *)(fd))[-3]) #define FNTSUM(fd) (((int *)(fd))[-4]) #define FONT_EXTRA_WORDS 4 #define CM_SOFTBACK (8) #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row) static void fbcon_free_font(struct display *); static int fbcon_set_origin(struct vc_data *); #define CURSOR_DRAW_DELAY (1) /* # VBL ints between cursor state changes */ #define ARM_CURSOR_BLINK_RATE (10) #define ATARI_CURSOR_BLINK_RATE (42) #define MAC_CURSOR_BLINK_RATE (32) #define DEFAULT_CURSOR_BLINK_RATE (20) static int vbl_cursor_cnt; #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_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_font_op(struct vc_data *vc, struct console_font_op *op); 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__ int real_y(struct display *p, int ypos); 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); #ifdef CONFIG_MAC /* * On the Macintoy, there may or may not be a working VBL int. We need to probe */ static int vbl_detected; static irqreturn_t fb_vbl_detect(int irq, void *dummy, struct pt_regs *fp) { vbl_detected++; return IRQ_HANDLED; } #endif static void fb_flashcursor(void *private) { struct fb_info *info = (struct fb_info *) private; if (!info || info->state != FBINFO_STATE_RUNNING || info->cursor.rop == ROP_COPY) return; acquire_console_sem(); info->cursor.enable ^= 1; info->fbops->fb_cursor(info, &info->cursor); release_console_sem(); } #if (defined(__arm__) && defined(IRQ_VSYNCPULSE)) || defined(CONFIG_ATARI) || defined(CONFIG_MAC) static int cursor_blink_rate; static irqreturn_t fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp) { struct fb_info *info = dev_id; if (vbl_cursor_cnt && --vbl_cursor_cnt == 0) { schedule_work(&info->queue); vbl_cursor_cnt = cursor_blink_rate; } return IRQ_HANDLED; } #endif static void cursor_timer_handler(unsigned long dev_addr); static struct timer_list cursor_timer = TIMER_INITIALIZER(cursor_timer_handler, 0, 0); static void cursor_timer_handler(unsigned long dev_addr) { struct fb_info *info = (struct fb_info *) dev_addr; schedule_work(&info->queue); mod_timer(&cursor_timer, jiffies + HZ/5); } int __init fb_console_setup(char *this_opt) { char *options; int i, j; if (!this_opt || !*this_opt) return 0; 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 0; options++; } else return 0; } 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[i] = (options[j++]-'0') % FB_MAX; } return 0; } 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; } } return 0; } __setup("fbcon=", fb_console_setup); /** * set_con2fb_map - map console to frame buffer device * @unit: virtual console number to map * @newidx: frame buffer index to map virtual console to * * Maps a virtual console @unit to a frame buffer device * @newidx. */ int set_con2fb_map(int unit, int newidx) { struct vc_data *vc = vc_cons[unit].d; if (!vc) return -ENODEV; con2fb_map[unit] = newidx; fbcon_is_default = (vc->vc_sw == &fb_con) ? 1 : 0; return take_over_console(&fb_con, unit, unit, fbcon_is_default); } /* * Accelerated handlers. */ void accel_bmove(struct vc_data *vc, struct fb_info *info, int sy, int sx, int dy, int dx, int height, int width) { struct fb_copyarea area; area.sx = sx * vc->vc_font.width; area.sy = sy * vc->vc_font.height; area.dx = dx * vc->vc_font.width; area.dy = dy * vc->vc_font.height; area.height = height * vc->vc_font.height; area.width = width * vc->vc_font.width; info->fbops->fb_copyarea(info, &area); } void accel_clear(struct vc_data *vc, struct fb_info *info, int sy, int sx, int height, int width) { int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; struct fb_fillrect region; region.color = attr_bgcol_ec(bgshift, vc); region.dx = sx * vc->vc_font.width; region.dy = sy * vc->vc_font.height; region.width = width * vc->vc_font.width; region.height = height * vc->vc_font.height; region.rop = ROP_COPY; info->fbops->fb_fillrect(info, ®ion); } void accel_putcs(struct vc_data *vc, struct fb_info *info, const unsigned short *s, int count, int yy, int xx) { unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; unsigned int width = (vc->vc_font.width + 7) >> 3; unsigned int cellsize = vc->vc_font.height * width; unsigned int maxcnt = info->pixmap.size/cellsize; unsigned int scan_align = info->pixmap.scan_align - 1; unsigned int buf_align = info->pixmap.buf_align - 1; unsigned int shift_low = 0, mod = vc->vc_font.width % 8; unsigned int shift_high = 8, pitch, cnt, size, k; int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; int fgshift = (vc->vc_hi_font_mask) ? 9 : 8; unsigned int idx = vc->vc_font.width >> 3; struct fb_image image; u16 c = scr_readw(s); u8 *src, *dst, *dst0; image.fg_color = attr_fgcol(fgshift, c); image.bg_color = attr_bgcol(bgshift, c); image.dx = xx * vc->vc_font.width; image.dy = yy * vc->vc_font.height; image.height = vc->vc_font.height; image.depth = 1; while (count) { if (count > maxcnt) cnt = k = maxcnt; else cnt = k = count; image.width = vc->vc_font.width * cnt; pitch = ((image.width + 7) >> 3) + scan_align; pitch &= ~scan_align; size = pitch * image.height + buf_align; size &= ~buf_align; dst0 = fb_get_buffer_offset(info, &info->pixmap, size); image.data = dst0; while (k--) { src = vc->vc_font.data + (scr_readw(s++) & charmask)*cellsize; dst = dst0; if (mod) { fb_move_buf_unaligned(info, &info->pixmap, dst, pitch, src, idx, image.height, shift_high, shift_low, mod); shift_low += mod; dst0 += (shift_low >= 8) ? width : width - 1; shift_low &= 7; shift_high = 8 - shift_low; } else { fb_move_buf_aligned(info, &info->pixmap, dst, pitch, src, idx, image.height); dst0 += width; } } info->fbops->fb_imageblit(info, &image); image.dx += cnt * vc->vc_font.width; count -= cnt; } } void accel_clear_margins(struct vc_data *vc, struct fb_info *info, int bottom_only) { int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; unsigned int cw = vc->vc_font.width; unsigned int ch = vc->vc_font.height; unsigned int rw = info->var.xres - (vc->vc_cols*cw); unsigned int bh = info->var.yres - (vc->vc_rows*ch); unsigned int rs = info->var.xres - rw; unsigned int bs = info->var.yres - bh; struct fb_fillrect region; region.color = attr_bgcol_ec(bgshift, vc); region.rop = ROP_COPY; if (rw && !bottom_only) { region.dx = info->var.xoffset + rs; region.dy = 0; region.width = rw; region.height = info->var.yres_virtual; info->fbops->fb_fillrect(info, ®ion); } if (bh) { region.dx = info->var.xoffset; region.dy = info->var.yoffset + bs; region.width = rs; region.height = bh; info->fbops->fb_fillrect(info, ®ion); } } /* * Low Level Operations */ /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */ static const char *fbcon_startup(void) { const char *display_desc = "frame buffer device"; struct display *p = &fb_display[fg_console]; struct vc_data *vc = vc_cons[fg_console].d; struct font_desc *font = NULL; struct module *owner; struct fb_info *info; static int done = 0; int cols, rows; int irqres; irqres = 1; /* * If num_registered_fb is zero, this is a call for the dummy part. * The frame buffer devices weren't initialized yet. */ if (!num_registered_fb || done) return display_desc; done = 1; info = registered_fb[0]; if (!info) return NULL; info->currcon = -1; 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); 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); vc->vc_font.width = font->width; vc->vc_font.height = font->height; vc->vc_font.data = p->fontdata = font->data; vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */ } /* * 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. */ if (info->fbops->fb_set_par) info->fbops->fb_set_par(info); cols = info->var.xres/vc->vc_font.width; rows = info->var.yres/vc->vc_font.height; vc_resize(vc->vc_num, 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); con_set_default_unimap(vc->vc_num); #ifdef CONFIG_ATARI if (MACH_IS_ATARI) { cursor_blink_rate = ATARI_CURSOR_BLINK_RATE; irqres = request_irq(IRQ_AUTO_4, fb_vbl_handler, IRQ_TYPE_PRIO, "framebuffer vbl", info); } #endif /* CONFIG_ATARI */ #ifdef CONFIG_MAC /* * On a Macintoy, the VBL interrupt may or may not be active. * As interrupt based cursor is more reliable and race free, we * probe for VBL interrupts. */ if (MACH_IS_MAC) { int ct = 0; /* * Probe for VBL: set temp. handler ... */ irqres = request_irq(IRQ_MAC_VBL, fb_vbl_detect, 0, "framebuffer vbl", info); vbl_detected = 0; /* * ... and spin for 20 ms ... */ while (!vbl_detected && ++ct < 1000) udelay(20); if (ct == 1000) printk ("fbcon_startup: No VBL detected, using timer based cursor.\n"); free_irq(IRQ_MAC_VBL, fb_vbl_detect); if (vbl_detected) { /* * interrupt based cursor ok */ cursor_blink_rate = MAC_CURSOR_BLINK_RATE; irqres = request_irq(IRQ_MAC_VBL, fb_vbl_handler, 0, "framebuffer vbl", info); } else { /* * VBL not detected: fall through, use timer based cursor */ irqres = 1; } } #endif /* CONFIG_MAC */ #if defined(__arm__) && defined(IRQ_VSYNCPULSE) cursor_blink_rate = ARM_CURSOR_BLINK_RATE; irqres = request_irq(IRQ_VSYNCPULSE, fb_vbl_handler, SA_SHIRQ, "framebuffer vbl", info); #endif /* Initialize the work queue. If the driver provides its * own work queue this means it will use something besides * default timer to flash the cursor. */ if (!info->queue.func) { INIT_WORK(&info->queue, fb_flashcursor, info); cursor_timer.expires = jiffies + HZ / 5; cursor_timer.data = (unsigned long ) info; add_timer(&cursor_timer); } return display_desc; } static void fbcon_init(struct vc_data *vc, int init) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; struct vc_data **default_mode = vc->vc_display_fg; struct display *t, *p = &fb_display[vc->vc_num]; int display_fg = (*default_mode)->vc_num; int logo = 1, rows, cols, charcnt = 256; unsigned short *save = NULL, *r, *q; if (vc->vc_num != display_fg || (info->flags & FBINFO_FLAG_MODULE) || (info->fix.type == FB_TYPE_TEXT)) logo = 0; info->var.xoffset = info->var.yoffset = p->yscroll = 0; /* reset wrap/pan */ /* If we are not the first console on this fb, copy the font from that console */ t = &fb_display[display_fg]; vc->vc_font.width = (*default_mode)->vc_font.width; vc->vc_font.height = (*default_mode)->vc_font.height; vc->vc_font.data = p->fontdata = t->fontdata; p->userfont = t->userfont; if (p->userfont) { REFCOUNT(p->fontdata)++; charcnt = FNTCHARCNT(p->fontdata); } con_copy_unimap(vc->vc_num, display_fg); vc->vc_can_do_color = info->var.bits_per_pixel != 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; } cols = info->var.xres / vc->vc_font.width; rows = info->var.yres / vc->vc_font.height; vc_resize(vc->vc_num, cols, rows); if (info->var.accel_flags) p->scrollmode = SCROLL_YNOMOVE; else p->scrollmode = SCROLL_YREDRAW; /* * ++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 = cols; vc->vc_rows = rows; } if (logo) { /* Need to make room for the logo */ int cnt; int step; logo_height = fb_prepare_logo(info); logo_lines = (logo_height + vc->vc_font.height - 1) / 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 && rows >= rows + logo_lines) { save = kmalloc(logo_lines * cols * 2, GFP_KERNEL); if (save) { scr_memsetw(save, vc->vc_video_erase_char, logo_lines * cols * 2); r = q - step; for (cnt = 0; cnt < logo_lines; cnt++, r += cols) scr_memcpyw(save + cnt * cols, r, 2 * cols); 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) { vc->vc_y += logo_lines; vc->vc_pos += logo_lines * vc->vc_size_row; } } scr_memsetw((unsigned short *) vc->vc_origin, vc->vc_video_erase_char, vc->vc_size_row * logo_lines); if (CON_IS_VISIBLE(vc) && vt_cons[vc->vc_num]->vc_mode == KD_TEXT) { accel_clear_margins(vc, info, 0); update_screen(vc->vc_num); } if (save) { q = (unsigned short *) (vc->vc_origin + vc->vc_size_row * rows); scr_memcpyw(q, save, logo_lines * 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 = -1; printk(KERN_INFO "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); } else { logo_shown = -2; vc->vc_top = logo_lines; } } if (vc->vc_num == display_fg && softback_buf) { 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 fbcon_deinit(struct vc_data *vc) { struct display *p = &fb_display[vc->vc_num]; fbcon_free_font(p); } /* ====================================================================== */ /* fbcon_XXX routines - interface used by the world * * This system is now divided into two levels because of complications * caused by hardware scrolling. Top level functions: * * fbcon_bmove(), fbcon_clear(), fbcon_putc() * * handles y values in range [0, scr_height-1] that correspond to real * screen positions. y_wrap shift means that first line of bitmap may be * anywhere on this display. These functions convert lineoffsets to * bitmap offsets and deal with the wrap-around case by splitting blits. * * fbcon_bmove_physical_8() -- These functions fast implementations * fbcon_clear_physical_8() -- of original fbcon_XXX fns. * fbcon_putc_physical_8() -- (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 __inline__ int real_y(struct display *p, int ypos) { int rows = p->vrows; ypos += p->yscroll; return ypos < rows ? ypos : ypos - rows; } static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height, int width) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; u_int y_break; if (!info->fbops->fb_blank && console_blanked) return; if (info->state != FBINFO_STATE_RUNNING) return; if (!height || !width) return; /* 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; accel_clear(vc, info, real_y(p, sy), sx, b, width); accel_clear(vc, info, real_y(p, sy + b), sx, height - b, width); } else accel_clear(vc, info, real_y(p, sy), sx, height, width); } static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; unsigned int scan_align = info->pixmap.scan_align - 1; unsigned int buf_align = info->pixmap.buf_align - 1; unsigned int width = (vc->vc_font.width + 7) >> 3; int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; int fgshift = (vc->vc_hi_font_mask) ? 9 : 8; struct display *p = &fb_display[vc->vc_num]; unsigned int size, pitch; struct fb_image image; u8 *src, *dst; if (!info->fbops->fb_blank && console_blanked) return; if (info->state != FBINFO_STATE_RUNNING) return; if (vt_cons[vc->vc_num]->vc_mode != KD_TEXT) return; image.dx = xpos * vc->vc_font.width; image.dy = real_y(p, ypos) * vc->vc_font.height; image.width = vc->vc_font.width; image.height = vc->vc_font.height; image.fg_color = attr_fgcol(fgshift, c); image.bg_color = attr_bgcol(bgshift, c); image.depth = 1; src = vc->vc_font.data + (c & charmask) * vc->vc_font.height * width; pitch = width + scan_align; pitch &= ~scan_align; size = pitch * vc->vc_font.height; size += buf_align; size &= ~buf_align; dst = fb_get_buffer_offset(info, &info->pixmap, size); image.data = dst; fb_move_buf_aligned(info, &info->pixmap, dst, pitch, src, width, image.height); info->fbops->fb_imageblit(info, &image); } static void fbcon_putcs(struct vc_data *vc, const unsigned short *s, int count, int ypos, int xpos) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; if (!info->fbops->fb_blank && console_blanked) return; if (info->state != FBINFO_STATE_RUNNING) return; if (vt_cons[vc->vc_num]->vc_mode != KD_TEXT) return; accel_putcs(vc, info, s, count, real_y(p, ypos), xpos); } static void fbcon_cursor(struct vc_data *vc, int mode) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; int fgshift = (vc->vc_hi_font_mask) ? 9 : 8; struct display *p = &fb_display[vc->vc_num]; int w = (vc->vc_font.width + 7) >> 3, c; int y = real_y(p, vc->vc_y); struct fb_cursor cursor; if (mode & CM_SOFTBACK) { mode &= ~CM_SOFTBACK; if (softback_lines) { if (y + softback_lines >= vc->vc_rows) mode = CM_ERASE; else y += softback_lines; } } else if (softback_lines) fbcon_set_origin(vc); c = scr_readw((u16 *) vc->vc_pos); cursor.image.data = vc->vc_font.data + ((c & charmask) * (w * vc->vc_font.height)); cursor.set = FB_CUR_SETCUR; cursor.image.depth = 1; switch (mode) { case CM_ERASE: if (info->cursor.rop == ROP_XOR) { info->cursor.enable = 0; info->cursor.rop = ROP_COPY; info->fbops->fb_cursor(info, &cursor); } break; case CM_MOVE: case CM_DRAW: info->cursor.enable = 1; if (info->cursor.image.fg_color != attr_fgcol(fgshift, c) || info->cursor.image.bg_color != attr_bgcol(bgshift, c)) { cursor.image.fg_color = attr_fgcol(fgshift, c); cursor.image.bg_color = attr_bgcol(bgshift, c); cursor.set |= FB_CUR_SETCMAP; } if ((info->cursor.image.dx != (vc->vc_font.width * vc->vc_x)) || (info->cursor.image.dy != (vc->vc_font.height * y))) { cursor.image.dx = vc->vc_font.width * vc->vc_x; cursor.image.dy = vc->vc_font.height * y; cursor.set |= FB_CUR_SETPOS; } if (info->cursor.image.height != vc->vc_font.height || info->cursor.image.width != vc->vc_font.width) { cursor.image.height = vc->vc_font.height; cursor.image.width = vc->vc_font.width; cursor.set |= FB_CUR_SETSIZE; } if (info->cursor.hot.x || info->cursor.hot.y) { cursor.hot.x = cursor.hot.y = 0; cursor.set |= FB_CUR_SETHOT; } if ((cursor.set & FB_CUR_SETSIZE) || ((vc->vc_cursor_type & 0x0f) != p->cursor_shape)) { char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC); int cur_height, size, i = 0; if (!mask) return; if (info->cursor.mask) kfree(info->cursor.mask); info->cursor.mask = mask; p->cursor_shape = vc->vc_cursor_type & 0x0f; cursor.set |= FB_CUR_SETSHAPE; switch (vc->vc_cursor_type & 0x0f) { case CUR_NONE: cur_height = 0; break; case CUR_UNDERLINE: cur_height = (vc->vc_font.height < 10) ? 1 : 2; break; case CUR_LOWER_THIRD: cur_height = vc->vc_font.height/3; break; case CUR_LOWER_HALF: cur_height = vc->vc_font.height >> 1; break; case CUR_TWO_THIRDS: cur_height = (vc->vc_font.height << 1)/3; break; case CUR_BLOCK: default: cur_height = vc->vc_font.height; break; } size = (vc->vc_font.height - cur_height) * w; while (size--) mask[i++] = 0; size = cur_height * w; while (size--) mask[i++] = 0xff; } info->cursor.rop = ROP_XOR; info->fbops->fb_cursor(info, &cursor); vbl_cursor_cnt = CURSOR_DRAW_DELAY; break; } } static int scrollback_phys_max = 0; static int scrollback_max = 0; static int scrollback_current = 0; int update_var(int con, struct fb_info *info) { if (con == info->currcon) return fb_pan_display(info, &info->var); return 0; } static __inline__ void ywrap_up(struct vc_data *vc, int count) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; p->yscroll += count; if (p->yscroll >= p->vrows) /* Deal with wrap */ p->yscroll -= p->vrows; info->var.xoffset = 0; info->var.yoffset = p->yscroll * vc->vc_font.height; info->var.vmode |= FB_VMODE_YWRAP; update_var(vc->vc_num, 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[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; p->yscroll -= count; if (p->yscroll < 0) /* Deal with wrap */ p->yscroll += p->vrows; info->var.xoffset = 0; info->var.yoffset = p->yscroll * vc->vc_font.height; info->var.vmode |= FB_VMODE_YWRAP; update_var(vc->vc_num, 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[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; p->yscroll += count; if (p->yscroll > p->vrows - vc->vc_rows) { accel_bmove(vc, info, p->vrows - vc->vc_rows, 0, 0, 0, vc->vc_rows, vc->vc_cols); p->yscroll -= p->vrows - vc->vc_rows; } info->var.xoffset = 0; info->var.yoffset = p->yscroll * vc->vc_font.height; info->var.vmode &= ~FB_VMODE_YWRAP; update_var(vc->vc_num, info); accel_clear_margins(vc, info, 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[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; p->yscroll -= count; if (p->yscroll < 0) { accel_bmove(vc, info, 0, 0, p->vrows - vc->vc_rows, 0, vc->vc_rows, vc->vc_cols); p->yscroll += p->vrows - vc->vc_rows; } info->var.xoffset = 0; info->var.yoffset = p->yscroll * vc->vc_font.height; info->var.vmode &= ~FB_VMODE_YWRAP; update_var(vc->vc_num, info); accel_clear_margins(vc, info, 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) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; 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) { accel_putcs(vc, info, start, s - start, real_y(p, line), x); x += s - start; start = s; } } if (c == scr_readw(d)) { if (s > start) { accel_putcs(vc, info, start, s - start, real_y(p, line), x); x += s - start + 1; start = s + 1; } else { x++; start++; } } s++; d++; } while (s < le); if (s > start) accel_putcs(vc, info, start, s - start, real_y(p, line), x); line++; if (d == (u16 *) softback_end) d = (u16 *) softback_buf; if (d == (u16 *) softback_in) d = (u16 *) 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(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); struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; 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) { accel_putcs(vc, info, start, s - start, real_y(p, line), x); x += s - start; start = s; } } if (c == scr_readw(d)) { if (s > start) { accel_putcs(vc, info, start, s - start, real_y(p, line), x); x += s - start + 1; start = s + 1; } else { x++; start++; } } scr_writew(c, d); console_conditional_schedule(); s++; d++; } while (s < le); if (s > start) accel_putcs(vc, info, start, s - start, real_y(p, line), x); console_conditional_schedule(); if (offset > 0) line++; else { line--; /* NOTE: We subtract two lines from these pointers */ s -= 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[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; int scroll_partial = !(p->scrollmode & __SCROLL_YNOPARTIAL); if (!info->fbops->fb_blank && console_blanked) return 0; if (!count || vt_cons[vc->vc_num]->vc_mode != KD_TEXT) return 0; 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 & __SCROLL_YMASK) { case __SCROLL_YMOVE: accel_bmove(vc, info, t + count, 0, t, 0, b - t - count, vc->vc_cols); accel_clear(vc, info, b - count, 0, count, vc->vc_cols); break; case __SCROLL_YWRAP: 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 (p->scrollmode & __SCROLL_YPANREDRAW) goto redraw_up; else fbcon_bmove(vc, t + count, 0, t, 0, b - t - count, vc->vc_cols); fbcon_clear(vc, b - count, 0, count, vc->vc_cols); break; case __SCROLL_YPAN: 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 (p->scrollmode & __SCROLL_YPANREDRAW) goto redraw_up; else fbcon_bmove(vc, t + count, 0, t, 0, b - t - count, vc->vc_cols); fbcon_clear(vc, b - count, 0, count, vc->vc_cols); break; case __SCROLL_YREDRAW: redraw_up: fbcon_redraw(vc, p, t, b - t - count, count * vc->vc_cols); accel_clear(vc, info, real_y(p, 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; switch (p->scrollmode & __SCROLL_YMASK) { case __SCROLL_YMOVE: accel_bmove(vc, info, t, 0, t + count, 0, b - t - count, vc->vc_cols); accel_clear(vc, info, t, 0, count, vc->vc_cols); break; case __SCROLL_YWRAP: 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 (p->scrollmode & __SCROLL_YPANREDRAW) goto redraw_down; else fbcon_bmove(vc, t, 0, t + count, 0, b - t - count, vc->vc_cols); fbcon_clear(vc, t, 0, count, vc->vc_cols); break; case __SCROLL_YPAN: 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 (p->scrollmode & __SCROLL_YPANREDRAW) goto redraw_down; else fbcon_bmove(vc, t, 0, t + count, 0, b - t - count, vc->vc_cols); fbcon_clear(vc, t, 0, count, vc->vc_cols); break; case __SCROLL_YREDRAW: redraw_down: fbcon_redraw(vc, p, b - 1, b - t - count, -count * vc->vc_cols); accel_clear(vc, info, real_y(p, 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[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; if (!info->fbops->fb_blank && console_blanked) 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[(int) con2fb_map[vc->vc_num]]; 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; } accel_bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx, height, width); } static __inline__ void updatescrollmode(struct display *p, struct fb_info *info, struct vc_data *vc) { int m; if (p->scrollmode & __SCROLL_YFIXED) return; if (divides(info->fix.ywrapstep, vc->vc_font.height) && divides(vc->vc_font.height, info->var.yres_virtual)) m = __SCROLL_YWRAP; else if (divides(info->fix.ypanstep, vc->vc_font.height) && info->var.yres_virtual >= info->var.yres + vc->vc_font.height) m = __SCROLL_YPAN; else if (p->scrollmode & __SCROLL_YNOMOVE) m = __SCROLL_YREDRAW; else m = __SCROLL_YMOVE; p->scrollmode = (p->scrollmode & ~__SCROLL_YMASK) | m; } static int fbcon_resize(struct vc_data *vc, unsigned int width, unsigned int height) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; struct fb_var_screeninfo var = info->var; int err; int x_diff, y_diff; int fw = vc->vc_font.width; int fh = vc->vc_font.height; var.xres = width * fw; var.yres = height * fh; x_diff = info->var.xres - var.xres; y_diff = info->var.yres - var.yres; if (x_diff < 0 || x_diff > fw || (y_diff < 0 || y_diff > fh)) { char mode[40]; DPRINTK("attempting resize %ix%i\n", var.xres, var.yres); if (!info->fbops->fb_set_par) return -EINVAL; sprintf(mode, "%dx%d", var.xres, var.yres); err = fb_find_mode(&var, info, mode, NULL, 0, NULL, info->var.bits_per_pixel); if (!err || width > var.xres/fw || height > var.yres/fh) return -EINVAL; DPRINTK("resize now %ix%i\n", var.xres, var.yres); if (CON_IS_VISIBLE(vc)) { var.activate = FB_ACTIVATE_NOW; fb_set_var(info, &var); } } p->vrows = var.yres_virtual/fh; if (var.yres > (fh * (height + 1))) p->vrows -= (var.yres - (fh * height)) / fh; if ((var.yres % fh) && (var.yres_virtual % fh < var.yres % fh)) p->vrows--; updatescrollmode(p, info, vc); return 0; } static int fbcon_switch(struct vc_data *vc) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; if (softback_top) { int l = fbcon_softback_size / vc->vc_size_row; if (softback_lines) fbcon_set_origin(vc); softback_top = softback_curr = softback_in = softback_buf; softback_lines = 0; 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; } } if (logo_shown >= 0) { struct vc_data *conp2 = vc_cons[logo_shown].d; if (conp2->vc_top == logo_lines && conp2->vc_bottom == conp2->vc_rows) conp2->vc_top = 0; logo_shown = -1; } if (info) info->var.yoffset = p->yscroll = 0; fbcon_resize(vc, vc->vc_cols, vc->vc_rows); switch (p->scrollmode & __SCROLL_YMASK) { case __SCROLL_YWRAP: scrollback_phys_max = p->vrows - vc->vc_rows; break; case __SCROLL_YPAN: 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; info->currcon = vc->vc_num; update_var(vc->vc_num, info); fbcon_set_palette(vc, color_table); if (vt_cons[vc->vc_num]->vc_mode == KD_TEXT) accel_clear_margins(vc, info, 0); if (logo_shown == -2) { logo_shown = fg_console; /* This is protected above by initmem_freed */ fb_show_logo(info); update_region(fg_console, 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 int fbcon_blank(struct vc_data *vc, int blank, int mode_switch) { unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; if (mode_switch) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; struct fb_var_screeninfo var = info->var; if (blank) { fbcon_cursor(vc, CM_ERASE); return 0; } var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE; fb_set_var(info, &var); } fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW); if (!info->fbops->fb_blank) { if (blank) { unsigned short oldc; u_int height; u_int y_break; oldc = vc->vc_video_erase_char; vc->vc_video_erase_char &= charmask; height = vc->vc_rows; y_break = p->vrows - p->yscroll; if (height > y_break) { accel_clear(vc, info, real_y(p, 0), 0, y_break, vc->vc_cols); accel_clear(vc, info, real_y(p, y_break), 0, height - y_break, vc->vc_cols); } else accel_clear(vc, info, real_y(p, 0), 0, height, vc->vc_cols); vc->vc_video_erase_char = oldc; } else update_screen(vc->vc_num); return 0; } else return fb_blank(info, blank); } static void fbcon_free_font(struct display *p) { if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0)) kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int)); p->fontdata = NULL; p->userfont = 0; } static inline int fbcon_get_font(struct vc_data *vc, struct console_font_op *op) { u8 *fontdata = vc->vc_font.data; u8 *data = op->data; int i, j; op->width = vc->vc_font.width; op->height = vc->vc_font.height; op->charcount = vc->vc_hi_font_mask ? 512 : 256; if (!op->data) return 0; if (op->width <= 8) { j = vc->vc_font.height; for (i = 0; i < op->charcount; i++) { memcpy(data, fontdata, j); memset(data + j, 0, 32 - j); data += 32; fontdata += j; } } else if (op->width <= 16) { j = vc->vc_font.height * 2; for (i = 0; i < op->charcount; i++) { memcpy(data, fontdata, j); memset(data + j, 0, 64 - j); data += 64; fontdata += j; } } else if (op->width <= 24) { for (i = 0; i < op->charcount; i++) { for (j = 0; j < 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 < op->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, struct console_font_op *op, u8 * data, int userfont) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; struct display *p = &fb_display[vc->vc_num]; int resize; int w = op->width; int h = op->height; int cnt; char *old_data = NULL; if (!w > 32) { if (userfont && op->op != KD_FONT_OP_COPY) kfree(data - FONT_EXTRA_WORDS * sizeof(int)); return -ENXIO; } 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 = 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) { /* reset wrap/pan */ info->var.xoffset = info->var.yoffset = p->yscroll = 0; vc_resize(vc->vc_num, info->var.xres / w, info->var.yres / h); if (CON_IS_VISIBLE(vc) && softback_buf) { 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; } } } else if (CON_IS_VISIBLE(vc) && vt_cons[vc->vc_num]->vc_mode == KD_TEXT) { accel_clear_margins(vc, info, 0); update_screen(vc->vc_num); } if (old_data && (--REFCOUNT(old_data) == 0)) kfree(old_data - FONT_EXTRA_WORDS * sizeof(int)); return 0; } static inline int fbcon_copy_font(struct vc_data *vc, struct console_font_op *op) { struct display *od; int h = op->height; if (h < 0 || !vc_cons_allocated(h)) return -ENOTTY; if (h == vc->vc_num) return 0; /* nothing to do */ od = &fb_display[h]; if (od->fontdata == vc->vc_font.data) return 0; /* already the same font... */ op->width = vc->vc_font.width; op->height = vc->vc_font.height; return fbcon_do_set_font(vc, op, od->fontdata, od->userfont); } static inline int fbcon_set_font(struct vc_data *vc, struct console_font_op *op) { int w = op->width; int h = op->height; int size = h; int i, k; u8 *new_data, *data = op->data, *p; if ((w <= 0) || (w > 32) || (op->charcount != 256 && op->charcount != 512)) return -EINVAL; if (w > 8) { if (w <= 16) size *= 2; else size *= 4; } size *= op->charcount; if (! (new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER))) return -ENOMEM; new_data += FONT_EXTRA_WORDS * sizeof(int); FNTSIZE(new_data) = size; FNTCHARCNT(new_data) = op->charcount; REFCOUNT(new_data) = 0; /* usage counter */ p = new_data; if (w <= 8) { for (i = 0; i < op->charcount; i++) { memcpy(p, data, h); data += 32; p += h; } } else if (w <= 16) { h *= 2; for (i = 0; i < op->charcount; i++) { memcpy(p, data, h); data += 64; p += h; } } else if (w <= 24) { for (i = 0; i < op->charcount; i++) { int j; for (j = 0; j < h; j++) { memcpy(p, data, 3); p[3] = 0; data += 3; p += sizeof(u32); } data += 3 * (32 - h); } } else { h *= 4; for (i = 0; i < op->charcount; i++) { memcpy(p, data, h); data += 128; p += h; } } /* we can do it in u32 chunks because of charcount is 256 or 512, so font length must be multiple of 256, at least. And 256 is multiple of 4 */ k = 0; while (p > new_data) { p = (u8 *)((u32 *)p - 1); k += *(u32 *) p; } FNTSUM(new_data) = k; /* Check if the same font is on some other console already */ for (i = 0; i < MAX_NR_CONSOLES; i++) { struct vc_data *tmp = vc_cons[i].d; if (fb_display[i].userfont && fb_display[i].fontdata && FNTSUM(fb_display[i].fontdata) == k && 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 = fb_display[i].fontdata; break; } } return fbcon_do_set_font(vc, op, new_data, 1); } static inline int fbcon_set_def_font(struct vc_data *vc, struct console_font_op *op) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; char name[MAX_FONT_NAME]; struct font_desc *f; if (!op->data) f = get_default_font(info->var.xres, info->var.yres); else if (strncpy_from_user(name, op->data, MAX_FONT_NAME - 1) < 0) return -EFAULT; else { name[MAX_FONT_NAME - 1] = 0; if (!(f = find_font(name))) return -ENOENT; } op->width = f->width; op->height = f->height; return fbcon_do_set_font(vc, op, f->data, 0); } static int fbcon_font_op(struct vc_data *vc, struct console_font_op *op) { switch (op->op) { case KD_FONT_OP_SET: return fbcon_set_font(vc, op); case KD_FONT_OP_GET: return fbcon_get_font(vc, op); case KD_FONT_OP_SET_DEFAULT: return fbcon_set_def_font(vc, op); case KD_FONT_OP_COPY: return fbcon_copy_font(vc, op); default: return -ENOSYS; } } static u16 palette_red[16]; static u16 palette_green[16]; static u16 palette_blue[16]; static struct fb_cmap palette_cmap = { 0, 16, palette_red, palette_green, palette_blue, NULL }; static int fbcon_set_palette(struct vc_data *vc, unsigned char *table) { struct fb_info *info = registered_fb[(int) con2fb_map[vc->vc_num]]; int i, j, k; u8 val; if (!vc->vc_can_do_color || (!info->fbops->fb_blank && console_blanked)) return -EINVAL; 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; } if (info->var.bits_per_pixel <= 4) palette_cmap.len = 1 << info->var.bits_per_pixel; else palette_cmap.len = 16; palette_cmap.start = 0; return fb_set_cmap(&palette_cmap, 1, 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[(int) con2fb_map[fg_console]]; struct display *p = &fb_display[fg_console]; int offset, limit, scrollback_old; if (softback_top) { if (vc->vc_num != fg_console) return 0; if (vt_cons[vc->vc_num]->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 = p; update_region(vc->vc_num, vc->vc_origin, logo_lines * vc->vc_cols); } logo_shown = -1; } fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK); fbcon_redraw_softback(vc, p, 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 (!info->fbops->fb_blank && (console_blanked || vt_cons[vc->vc_num]->vc_mode != KD_TEXT || !lines)) return 0; fbcon_cursor(vc, CM_ERASE); offset = p->yscroll - scrollback_current; limit = p->vrows; switch (p->scrollmode && __SCROLL_YMASK) { case __SCROLL_YWRAP: info->var.vmode |= FB_VMODE_YWRAP; break; case __SCROLL_YPAN: limit -= vc->vc_rows; info->var.vmode &= ~FB_VMODE_YWRAP; break; } if (offset < 0) offset += limit; else if (offset >= limit) offset -= limit; info->var.xoffset = 0; info->var.yoffset = offset * vc->vc_font.height; update_var(vc->vc_num, info); if (!scrollback_current) fbcon_cursor(vc, CM_DRAW); return 0; } static int fbcon_set_origin(struct vc_data *vc) { if (softback_lines && !console_blanked) fbcon_scrolldelta(vc, softback_lines); return 0; } static void fbcon_suspended(struct fb_info *info) { /* Clear cursor, restore saved data */ info->cursor.enable = 0; info->fbops->fb_cursor(info, &info->cursor); } static void fbcon_resumed(struct fb_info *info) { struct vc_data *vc; if (info->currcon < 0) return; vc = vc_cons[info->currcon].d; update_screen(vc->vc_num); } static int fbcon_event_notify(struct notifier_block *self, unsigned long action, void *data) { struct fb_info *info = (struct fb_info *) data; switch(action) { case FB_EVENT_SUSPEND: fbcon_suspended(info); break; case FB_EVENT_RESUME: fbcon_resumed(info); break; } return 0; } /* * The console `switch' structure for the frame buffer based console */ 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_op = fbcon_font_op, .con_set_palette = fbcon_set_palette, .con_scrolldelta = fbcon_scrolldelta, .con_set_origin = fbcon_set_origin, .con_invert_region = fbcon_invert_region, .con_screen_pos = fbcon_screen_pos, .con_getxy = fbcon_getxy, .con_resize = fbcon_resize, }; static struct notifier_block fbcon_event_notifer = { .notifier_call = fbcon_event_notify, }; static int fbcon_event_notifier_registered; int __init fb_console_init(void) { int err; if (!num_registered_fb) return -ENODEV; err = take_over_console(&fb_con, first_fb_vc, last_fb_vc, fbcon_is_default); if (err) return err; acquire_console_sem(); if (!fbcon_event_notifier_registered) { fb_register_client(&fbcon_event_notifer); fbcon_event_notifier_registered = 1; } release_console_sem(); return 0; } #ifdef MODULE void __exit fb_console_exit(void) { acquire_console_sem(); if (fbcon_event_notifier_registered) { fb_unregister_client(&fbcon_event_notifer); fbcon_event_notifier_registered = 0; } release_console_sem(); give_up_console(&fb_con); } module_init(fb_console_init); module_exit(fb_console_exit); #endif /* * Visible symbols for modules */ EXPORT_SYMBOL(fb_display); EXPORT_SYMBOL(fb_con); MODULE_LICENSE("GPL");