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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/video/console/sticon.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/video/console/sticon.c')
-rw-r--r-- | drivers/video/console/sticon.c | 409 |
1 files changed, 409 insertions, 0 deletions
diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c new file mode 100644 index 0000000000..992a4fa431 --- /dev/null +++ b/drivers/video/console/sticon.c @@ -0,0 +1,409 @@ +/* + * linux/drivers/video/console/sticon.c - console driver using HP's STI firmware + * + * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org> + * Copyright (C) 2002-2020 Helge Deller <deller@gmx.de> + * + * 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 <mj@ucw.cz>, 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 <mj@ucw.cz> + * + * 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 <linux/init.h> +#include <linux/kernel.h> +#include <linux/console.h> +#include <linux/errno.h> +#include <linux/vt_kern.h> +#include <linux/kd.h> +#include <linux/selection.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/font.h> +#include <linux/crc32.h> +#include <linux/fb.h> + +#include <asm/io.h> + +#include <video/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 void sticon_set_def_font(int unit) +{ + 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; + } +} + +static int sticon_set_font(struct vc_data *vc, struct console_font *op, + unsigned int vpitch) +{ + 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) || (vpitch != 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); + + 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) +{ + sticon_set_def_font(vc->vc_num); + + return 0; +} + +static int sticon_font_set(struct vc_data *vc, struct console_font *font, + unsigned int vpitch, unsigned int flags) +{ + return sticon_set_font(vc, font, vpitch); +} + +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); +} + +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 on %s at [%s]\n", + sticon_sti->sti_data->inq_outptr.dev_name, + sticon_sti->pa_path); + 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"); |