/* * linux/drivers/video/console/sticon.c - console driver using HP's STI firmware * * Copyright (C) 2000 Philipp Rumpf * Copyright (C) 2002-2020 Helge Deller * * Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c, * which were * * Created 28 Sep 1997 by Geert Uytterhoeven * Rewritten by Martin Mares , July 1998 * Copyright (C) 1991, 1992 Linus Torvalds * 1995 Jay Estabrook * Copyright (C) 1995 Geert Uytterhoeven * Copyright (C) 1993 Bjoern Brauel * Roman Hodek * 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 * with work by Guenther Kelleter * Martin Schaller * Andreas Schwab * Emmanuel Marty (core@ggi-project.org) * Jakub Jelinek (jj@ultra.linux.cz) * Martin Mares * * 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. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include "../fbdev/sticore.h" /* switching to graphics mode */ #define BLANK 0 static int vga_is_gfx; #define STI_DEF_FONT sticon_sti->font /* borrowed from fbcon.c */ #define FNTREFCOUNT(fd) (fd->refcount) #define FNTCRC(fd) (fd->crc) static struct sti_cooked_font *font_data[MAX_NR_CONSOLES]; /* this is the sti_struct used for this console */ static struct sti_struct *sticon_sti; static const char *sticon_startup(void) { return "STI console"; } static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos) { if (vga_is_gfx || console_blanked) return; if (conp->vc_mode != KD_TEXT) return; sti_putc(sticon_sti, c, ypos, xpos, font_data[conp->vc_num]); } static void sticon_putcs(struct vc_data *conp, const unsigned short *s, int count, int ypos, int xpos) { if (vga_is_gfx || console_blanked) return; if (conp->vc_mode != KD_TEXT) return; while (count--) { sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++, font_data[conp->vc_num]); } } static void sticon_cursor(struct vc_data *conp, int mode) { unsigned short car1; /* no cursor update if screen is blanked */ if (vga_is_gfx || console_blanked) return; car1 = conp->vc_screenbuf[conp->state.x + conp->state.y * conp->vc_cols]; switch (mode) { case CM_ERASE: sti_putc(sticon_sti, car1, conp->state.y, conp->state.x, font_data[conp->vc_num]); break; case CM_MOVE: case CM_DRAW: switch (CUR_SIZE(conp->vc_cursor_type)) { case CUR_UNDERLINE: case CUR_LOWER_THIRD: case CUR_LOWER_HALF: case CUR_TWO_THIRDS: case CUR_BLOCK: sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11), conp->state.y, conp->state.x, font_data[conp->vc_num]); break; } break; } } static bool sticon_scroll(struct vc_data *conp, unsigned int t, unsigned int b, enum con_scroll dir, unsigned int count) { struct sti_struct *sti = sticon_sti; if (vga_is_gfx) return false; sticon_cursor(conp, CM_ERASE); switch (dir) { case SM_UP: sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols, font_data[conp->vc_num]); sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char, font_data[conp->vc_num]); break; case SM_DOWN: sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols, font_data[conp->vc_num]); sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char, font_data[conp->vc_num]); break; } return false; } static int sticon_set_def_font(int unit, struct console_font *op) { if (font_data[unit] != STI_DEF_FONT) { if (--FNTREFCOUNT(font_data[unit]) == 0) { kfree(font_data[unit]->raw_ptr); kfree(font_data[unit]); } font_data[unit] = STI_DEF_FONT; } return 0; } static int sticon_set_font(struct vc_data *vc, struct console_font *op) { struct sti_struct *sti = sticon_sti; int vc_cols, vc_rows, vc_old_cols, vc_old_rows; int unit = vc->vc_num; int w = op->width; int h = op->height; int size, i, bpc, pitch; struct sti_rom_font *new_font; struct sti_cooked_font *cooked_font; unsigned char *data = op->data, *p; if ((w < 6) || (h < 6) || (w > 32) || (h > 32) || (op->charcount != 256 && op->charcount != 512)) return -EINVAL; pitch = ALIGN(w, 8) / 8; bpc = pitch * h; size = bpc * op->charcount; new_font = kmalloc(sizeof(*new_font) + size, STI_LOWMEM); if (!new_font) return -ENOMEM; new_font->first_char = 0; new_font->last_char = op->charcount - 1; new_font->width = w; new_font->height = h; new_font->font_type = STI_FONT_HPROMAN8; new_font->bytes_per_char = bpc; new_font->underline_height = 0; new_font->underline_pos = 0; cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); if (!cooked_font) { kfree(new_font); return -ENOMEM; } cooked_font->raw = new_font; cooked_font->raw_ptr = new_font; cooked_font->width = w; cooked_font->height = h; FNTREFCOUNT(cooked_font) = 0; /* usage counter */ p = (unsigned char *) new_font; p += sizeof(*new_font); for (i = 0; i < op->charcount; i++) { memcpy(p, data, bpc); data += pitch*32; p += bpc; } FNTCRC(cooked_font) = crc32(0, new_font, size + sizeof(*new_font)); sti_font_convert_bytemode(sti, cooked_font); new_font = cooked_font->raw_ptr; /* check if font is already used by other console */ for (i = 0; i < MAX_NR_CONSOLES; i++) { if (font_data[i] != STI_DEF_FONT && (FNTCRC(font_data[i]) == FNTCRC(cooked_font))) { kfree(new_font); kfree(cooked_font); /* current font is the same as the new one */ if (i == unit) return 0; cooked_font = font_data[i]; new_font = cooked_font->raw_ptr; break; } } /* clear screen with old font: we now may have less rows */ vc_old_rows = vc->vc_rows; vc_old_cols = vc->vc_cols; sti_clear(sticon_sti, 0, 0, vc_old_rows, vc_old_cols, vc->vc_video_erase_char, font_data[vc->vc_num]); /* delete old font in case it is a user font */ sticon_set_def_font(unit, NULL); FNTREFCOUNT(cooked_font)++; font_data[unit] = cooked_font; vc_cols = sti_onscreen_x(sti) / cooked_font->width; vc_rows = sti_onscreen_y(sti) / cooked_font->height; vc_resize(vc, vc_cols, vc_rows); /* need to repaint screen if cols & rows are same as old font */ if (vc_cols == vc_old_cols && vc_rows == vc_old_rows) update_screen(vc); return 0; } static int sticon_font_default(struct vc_data *vc, struct console_font *op, char *name) { return sticon_set_def_font(vc->vc_num, op); } static int sticon_font_set(struct vc_data *vc, struct console_font *font, unsigned int flags) { return sticon_set_font(vc, font); } static void sticon_init(struct vc_data *c, int init) { struct sti_struct *sti = sticon_sti; int vc_cols, vc_rows; sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0); vc_cols = sti_onscreen_x(sti) / sti->font->width; vc_rows = sti_onscreen_y(sti) / sti->font->height; c->vc_can_do_color = 1; if (init) { c->vc_cols = vc_cols; c->vc_rows = vc_rows; } else { vc_resize(c, vc_cols, vc_rows); } } static void sticon_deinit(struct vc_data *c) { int i; /* free memory used by user font */ for (i = 0; i < MAX_NR_CONSOLES; i++) sticon_set_def_font(i, NULL); } static void sticon_clear(struct vc_data *conp, int sy, int sx, int height, int width) { if (!height || !width) return; sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char, font_data[conp->vc_num]); } static int sticon_switch(struct vc_data *conp) { return 1; /* needs refreshing */ } static int sticon_blank(struct vc_data *c, int blank, int mode_switch) { if (blank == 0) { if (mode_switch) vga_is_gfx = 0; return 1; } sti_clear(sticon_sti, 0, 0, c->vc_rows, c->vc_cols, BLANK, font_data[c->vc_num]); if (mode_switch) vga_is_gfx = 1; return 1; } static u8 sticon_build_attr(struct vc_data *conp, u8 color, enum vc_intensity intens, bool blink, bool underline, bool reverse, bool italic) { u8 fg = color & 7; u8 bg = (color & 0x70) >> 4; if (reverse) return (fg << 3) | bg; else return (bg << 3) | fg; } static void sticon_invert_region(struct vc_data *conp, u16 *p, int count) { int col = 1; /* vga_can_do_color; */ while (count--) { u16 a = scr_readw(p); if (col) a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4); else a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700; scr_writew(a, p++); } } static const struct consw sti_con = { .owner = THIS_MODULE, .con_startup = sticon_startup, .con_init = sticon_init, .con_deinit = sticon_deinit, .con_clear = sticon_clear, .con_putc = sticon_putc, .con_putcs = sticon_putcs, .con_cursor = sticon_cursor, .con_scroll = sticon_scroll, .con_switch = sticon_switch, .con_blank = sticon_blank, .con_font_set = sticon_font_set, .con_font_default = sticon_font_default, .con_build_attr = sticon_build_attr, .con_invert_region = sticon_invert_region, }; static int __init sticonsole_init(void) { int err, i; /* already initialized ? */ if (sticon_sti) return 0; sticon_sti = sti_get_rom(0); if (!sticon_sti) return -ENODEV; for (i = 0; i < MAX_NR_CONSOLES; i++) font_data[i] = STI_DEF_FONT; pr_info("sticon: Initializing STI text console.\n"); console_lock(); err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, PAGE0->mem_cons.cl_class != CL_DUPLEX); console_unlock(); return err; } module_init(sticonsole_init); MODULE_LICENSE("GPL");