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405 lines
9.9 KiB
405 lines
9.9 KiB
/* |
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* linux/drivers/video/console/sticon.c - console driver using HP's STI firmware |
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* |
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* Copyright (C) 2000 Philipp Rumpf <[email protected]> |
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* Copyright (C) 2002-2020 Helge Deller <[email protected]> |
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* |
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* Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c, |
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* which were |
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* |
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* Created 28 Sep 1997 by Geert Uytterhoeven |
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* Rewritten by Martin Mares <[email protected]>, July 1998 |
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* Copyright (C) 1991, 1992 Linus Torvalds |
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* 1995 Jay Estabrook |
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* Copyright (C) 1995 Geert Uytterhoeven |
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* Copyright (C) 1993 Bjoern Brauel |
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* Roman Hodek |
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* Copyright (C) 1993 Hamish Macdonald |
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* Greg Harp |
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* Copyright (C) 1994 David Carter [[email protected]] |
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* |
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* with work by William Rucklidge ([email protected]) |
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* Geert Uytterhoeven |
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* Jes Sorensen ([email protected]) |
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* Martin Apel |
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* with work by Guenther Kelleter |
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* Martin Schaller |
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* Andreas Schwab |
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* Emmanuel Marty ([email protected]) |
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* Jakub Jelinek ([email protected]) |
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* Martin Mares <[email protected]> |
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* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file COPYING in the main directory of this archive for |
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* more details. |
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* |
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*/ |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/console.h> |
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#include <linux/errno.h> |
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#include <linux/vt_kern.h> |
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#include <linux/kd.h> |
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#include <linux/selection.h> |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/font.h> |
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#include <linux/crc32.h> |
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#include <asm/io.h> |
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#include "../fbdev/sticore.h" |
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/* switching to graphics mode */ |
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#define BLANK 0 |
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static int vga_is_gfx; |
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#define STI_DEF_FONT sticon_sti->font |
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/* borrowed from fbcon.c */ |
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#define FNTREFCOUNT(fd) (fd->refcount) |
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#define FNTCRC(fd) (fd->crc) |
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static struct sti_cooked_font *font_data[MAX_NR_CONSOLES]; |
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/* this is the sti_struct used for this console */ |
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static struct sti_struct *sticon_sti; |
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static const char *sticon_startup(void) |
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{ |
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return "STI console"; |
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} |
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static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos) |
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{ |
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if (vga_is_gfx || console_blanked) |
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return; |
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if (conp->vc_mode != KD_TEXT) |
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return; |
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sti_putc(sticon_sti, c, ypos, xpos, font_data[conp->vc_num]); |
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} |
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static void sticon_putcs(struct vc_data *conp, const unsigned short *s, |
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int count, int ypos, int xpos) |
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{ |
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if (vga_is_gfx || console_blanked) |
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return; |
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if (conp->vc_mode != KD_TEXT) |
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return; |
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while (count--) { |
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sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++, |
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font_data[conp->vc_num]); |
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} |
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} |
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static void sticon_cursor(struct vc_data *conp, int mode) |
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{ |
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unsigned short car1; |
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/* no cursor update if screen is blanked */ |
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if (vga_is_gfx || console_blanked) |
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return; |
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car1 = conp->vc_screenbuf[conp->state.x + conp->state.y * conp->vc_cols]; |
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switch (mode) { |
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case CM_ERASE: |
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sti_putc(sticon_sti, car1, conp->state.y, conp->state.x, |
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font_data[conp->vc_num]); |
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break; |
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case CM_MOVE: |
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case CM_DRAW: |
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switch (CUR_SIZE(conp->vc_cursor_type)) { |
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case CUR_UNDERLINE: |
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case CUR_LOWER_THIRD: |
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case CUR_LOWER_HALF: |
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case CUR_TWO_THIRDS: |
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case CUR_BLOCK: |
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sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11), |
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conp->state.y, conp->state.x, font_data[conp->vc_num]); |
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break; |
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} |
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break; |
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} |
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} |
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static bool sticon_scroll(struct vc_data *conp, unsigned int t, |
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unsigned int b, enum con_scroll dir, unsigned int count) |
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{ |
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struct sti_struct *sti = sticon_sti; |
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if (vga_is_gfx) |
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return false; |
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sticon_cursor(conp, CM_ERASE); |
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switch (dir) { |
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case SM_UP: |
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sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols, |
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font_data[conp->vc_num]); |
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sti_clear(sti, b - count, 0, count, conp->vc_cols, |
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conp->vc_video_erase_char, font_data[conp->vc_num]); |
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break; |
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case SM_DOWN: |
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sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols, |
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font_data[conp->vc_num]); |
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sti_clear(sti, t, 0, count, conp->vc_cols, |
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conp->vc_video_erase_char, font_data[conp->vc_num]); |
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break; |
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} |
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return false; |
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} |
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static int sticon_set_def_font(int unit, struct console_font *op) |
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{ |
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if (font_data[unit] != STI_DEF_FONT) { |
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if (--FNTREFCOUNT(font_data[unit]) == 0) { |
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kfree(font_data[unit]->raw_ptr); |
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kfree(font_data[unit]); |
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} |
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font_data[unit] = STI_DEF_FONT; |
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} |
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return 0; |
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} |
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static int sticon_set_font(struct vc_data *vc, struct console_font *op) |
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{ |
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struct sti_struct *sti = sticon_sti; |
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int vc_cols, vc_rows, vc_old_cols, vc_old_rows; |
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int unit = vc->vc_num; |
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int w = op->width; |
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int h = op->height; |
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int size, i, bpc, pitch; |
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struct sti_rom_font *new_font; |
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struct sti_cooked_font *cooked_font; |
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unsigned char *data = op->data, *p; |
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if ((w < 6) || (h < 6) || (w > 32) || (h > 32) |
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|| (op->charcount != 256 && op->charcount != 512)) |
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return -EINVAL; |
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pitch = ALIGN(w, 8) / 8; |
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bpc = pitch * h; |
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size = bpc * op->charcount; |
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new_font = kmalloc(sizeof(*new_font) + size, STI_LOWMEM); |
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if (!new_font) |
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return -ENOMEM; |
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new_font->first_char = 0; |
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new_font->last_char = op->charcount - 1; |
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new_font->width = w; |
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new_font->height = h; |
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new_font->font_type = STI_FONT_HPROMAN8; |
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new_font->bytes_per_char = bpc; |
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new_font->underline_height = 0; |
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new_font->underline_pos = 0; |
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cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); |
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if (!cooked_font) { |
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kfree(new_font); |
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return -ENOMEM; |
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} |
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cooked_font->raw = new_font; |
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cooked_font->raw_ptr = new_font; |
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cooked_font->width = w; |
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cooked_font->height = h; |
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FNTREFCOUNT(cooked_font) = 0; /* usage counter */ |
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p = (unsigned char *) new_font; |
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p += sizeof(*new_font); |
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for (i = 0; i < op->charcount; i++) { |
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memcpy(p, data, bpc); |
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data += pitch*32; |
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p += bpc; |
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} |
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FNTCRC(cooked_font) = crc32(0, new_font, size + sizeof(*new_font)); |
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sti_font_convert_bytemode(sti, cooked_font); |
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new_font = cooked_font->raw_ptr; |
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/* check if font is already used by other console */ |
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for (i = 0; i < MAX_NR_CONSOLES; i++) { |
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if (font_data[i] != STI_DEF_FONT |
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&& (FNTCRC(font_data[i]) == FNTCRC(cooked_font))) { |
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kfree(new_font); |
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kfree(cooked_font); |
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/* current font is the same as the new one */ |
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if (i == unit) |
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return 0; |
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cooked_font = font_data[i]; |
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new_font = cooked_font->raw_ptr; |
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break; |
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} |
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} |
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/* clear screen with old font: we now may have less rows */ |
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vc_old_rows = vc->vc_rows; |
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vc_old_cols = vc->vc_cols; |
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sti_clear(sticon_sti, 0, 0, vc_old_rows, vc_old_cols, |
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vc->vc_video_erase_char, font_data[vc->vc_num]); |
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/* delete old font in case it is a user font */ |
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sticon_set_def_font(unit, NULL); |
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FNTREFCOUNT(cooked_font)++; |
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font_data[unit] = cooked_font; |
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vc_cols = sti_onscreen_x(sti) / cooked_font->width; |
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vc_rows = sti_onscreen_y(sti) / cooked_font->height; |
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vc_resize(vc, vc_cols, vc_rows); |
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/* need to repaint screen if cols & rows are same as old font */ |
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if (vc_cols == vc_old_cols && vc_rows == vc_old_rows) |
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update_screen(vc); |
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return 0; |
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} |
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static int sticon_font_default(struct vc_data *vc, struct console_font *op, char *name) |
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{ |
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return sticon_set_def_font(vc->vc_num, op); |
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} |
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static int sticon_font_set(struct vc_data *vc, struct console_font *font, |
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unsigned int flags) |
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{ |
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return sticon_set_font(vc, font); |
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} |
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static void sticon_init(struct vc_data *c, int init) |
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{ |
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struct sti_struct *sti = sticon_sti; |
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int vc_cols, vc_rows; |
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sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0); |
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vc_cols = sti_onscreen_x(sti) / sti->font->width; |
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vc_rows = sti_onscreen_y(sti) / sti->font->height; |
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c->vc_can_do_color = 1; |
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if (init) { |
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c->vc_cols = vc_cols; |
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c->vc_rows = vc_rows; |
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} else { |
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vc_resize(c, vc_cols, vc_rows); |
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} |
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} |
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static void sticon_deinit(struct vc_data *c) |
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{ |
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int i; |
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/* free memory used by user font */ |
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for (i = 0; i < MAX_NR_CONSOLES; i++) |
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sticon_set_def_font(i, NULL); |
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} |
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static void sticon_clear(struct vc_data *conp, int sy, int sx, int height, |
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int width) |
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{ |
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if (!height || !width) |
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return; |
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sti_clear(sticon_sti, sy, sx, height, width, |
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conp->vc_video_erase_char, font_data[conp->vc_num]); |
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} |
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static int sticon_switch(struct vc_data *conp) |
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{ |
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return 1; /* needs refreshing */ |
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} |
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static int sticon_blank(struct vc_data *c, int blank, int mode_switch) |
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{ |
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if (blank == 0) { |
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if (mode_switch) |
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vga_is_gfx = 0; |
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return 1; |
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} |
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sti_clear(sticon_sti, 0, 0, c->vc_rows, c->vc_cols, BLANK, |
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font_data[c->vc_num]); |
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if (mode_switch) |
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vga_is_gfx = 1; |
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return 1; |
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} |
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static u8 sticon_build_attr(struct vc_data *conp, u8 color, |
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enum vc_intensity intens, |
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bool blink, bool underline, bool reverse, |
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bool italic) |
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{ |
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u8 attr = ((color & 0x70) >> 1) | ((color & 7)); |
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if (reverse) { |
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color = ((color >> 3) & 0x7) | ((color & 0x7) << 3); |
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} |
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return attr; |
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} |
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static void sticon_invert_region(struct vc_data *conp, u16 *p, int count) |
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{ |
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int col = 1; /* vga_can_do_color; */ |
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while (count--) { |
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u16 a = scr_readw(p); |
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if (col) |
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a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4); |
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else |
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a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700; |
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scr_writew(a, p++); |
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} |
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} |
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static const struct consw sti_con = { |
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.owner = THIS_MODULE, |
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.con_startup = sticon_startup, |
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.con_init = sticon_init, |
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.con_deinit = sticon_deinit, |
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.con_clear = sticon_clear, |
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.con_putc = sticon_putc, |
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.con_putcs = sticon_putcs, |
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.con_cursor = sticon_cursor, |
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.con_scroll = sticon_scroll, |
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.con_switch = sticon_switch, |
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.con_blank = sticon_blank, |
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.con_font_set = sticon_font_set, |
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.con_font_default = sticon_font_default, |
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.con_build_attr = sticon_build_attr, |
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.con_invert_region = sticon_invert_region, |
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}; |
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static int __init sticonsole_init(void) |
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{ |
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int err, i; |
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/* already initialized ? */ |
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if (sticon_sti) |
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return 0; |
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sticon_sti = sti_get_rom(0); |
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if (!sticon_sti) |
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return -ENODEV; |
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for (i = 0; i < MAX_NR_CONSOLES; i++) |
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font_data[i] = STI_DEF_FONT; |
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pr_info("sticon: Initializing STI text console.\n"); |
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console_lock(); |
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err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, |
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PAGE0->mem_cons.cl_class != CL_DUPLEX); |
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console_unlock(); |
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return err; |
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} |
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module_init(sticonsole_init); |
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MODULE_LICENSE("GPL");
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