/* * * * Open Hack'Ware BIOS PC keyboard driver. * * Copyright (c) 2005 Jocelyn Mayer * * This code is a rework (mostly simplification) from code * proposed by Matthew Wood * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License V2 * as published by the Free Software Foundation * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include "bios.h" /* IO definitions */ #define PCKBD_IO_BASE 0x60 #define PCKBD_COMMAND_OFFSET 0x4 #define PCKBD_STATUS_OFFSET 0x4 /* Indexes for keyboard state */ #define SHIFT 0x1 #define CTRL 0x2 #define ALT 0x4 /* Scan codes */ #define L_SHIFT 0x2a #define R_SHIFT 0x36 #define L_CTRL 0x1d /* XXX: R_CTRL ? */ #define L_ALT 0x38 /* XXX: missing capslock */ /* XXX: TODO: add keypad/numlock ... (pc105 kbd) */ typedef struct kbdmap_t kbdmap_t; struct kbdmap_t { char translate[8]; }; typedef struct pckbd_t pckbd_t; struct pckbd_t { int modifiers; kbdmap_t *map; int maplen; int io_base; }; /* XXX: should not be here cause it's locale dependent */ static kbdmap_t pc_map_us[] = { /* 0x00 */ { { -1, -1, -1, -1, -1, -1, -1, -1, }, }, { { 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, }, }, { { '1', '!', -1, -1, '1', '!', -1, -1, }, }, { { '2', '\'', '\'', -1, -1, '2', '\'', '\'', }, }, { { '3', '#', -1, -1, '3', '#', -1, -1, }, }, { { '4', '$', -1, -1, '4', '$', -1, -1, }, }, { { '5', '%', -1, -1, '5', '%', -1, -1, }, }, { { '6', '^', -1, -1, '6', '^', -1, -1, }, }, /* 0x08 */ { { '7', '&', -1, -1, '7', '&', -1, -1, }, }, { { '8', '*', -1, -1, '8', '*', -1, -1, }, }, { { '9', '(', -1, -1, '9', '(', -1, -1, }, }, { { '0', ')', -1, -1, '0', ')', -1, -1, }, }, { { '-', '_', -1, -1, '-', '_', -1, -1, }, }, { { '=', '+', -1, -1, '=', '+', -1, -1, }, }, { { 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, }, }, { { 0x2a, -1, -1, -1, 0x2a, -1, -1, -1, }, }, /* 0x10 */ { { 'q', 'Q', -1, -1, 'q', 'Q', -1, -1, }, }, { { 'w', 'W', -1, -1, 'w', 'W', -1, -1, }, }, { { 'e', 'E', -1, -1, 'e', 'E', -1, -1, }, }, { { 'r', 'R', -1, -1, 'r', 'R', -1, -1, }, }, { { 't', 'T', -1, -1, 't', 'T', -1, -1, }, }, { { 'y', 'Y', -1, -1, 'y', 'Y', -1, -1, }, }, { { 'u', 'U', -1, -1, 'u', 'U', -1, -1, }, }, { { 'i', 'I', -1, -1, 'i', 'I', -1, -1, }, }, /* 0x18 */ { { 'o', 'O', -1, -1, 'o', 'O', -1, -1, }, }, { { 'p', 'P', -1, -1, 'p', 'P', -1, -1, }, }, { { '[', '{', 0x1b, 0x1b, '[', '{', 0x1b, 0x1b, }, }, { { ']', '}', -1, -1, ']', '}', -1, -1, }, }, { { 0x0d, 0x0d, '\r', '\r', 0x0d, 0x0d, '\r', '\r', }, }, { { -1, -1, -1, -1, -1, -1, -1, -1, }, }, { { 'a', 'A', -1, -1, 'a', 'A', -1, -1, }, }, { { 's', 'S', -1, -1, 's', 'S', -1, -1, }, }, /* 0x20 */ { { 'd', 'D', -1, -1, 'd', 'D', -1, -1, }, }, { { 'f', 'F', -1, -1, 'f', 'F', -1, -1, }, }, { { 'g', 'G', 0x07, 0x07, 'g', 'G', 0x07, 0x07, }, }, { { 'h', 'H', 0x08, 0x08, 'h', 'H', 0x08, 0x08, }, }, { { 'j', 'J', '\r', '\r', 'j', 'J', '\r', '\r', }, }, { { 'k', 'K', -1, -1, 'k', 'K', -1, -1, }, }, { { 'l', 'L', -1, -1, 'l', 'L', -1, -1, }, }, { { ';', ':', -1, -1, ';', ':', -1, -1, }, }, /* 0x28 */ { { '\'', '"', -1, -1, '\'', '"', -1, -1, }, }, { { '`', '~', -1, -1, '`', '~', -1, -1, }, }, { { 0x02, -1, -1, -1, -1, -1, -1, -1, }, }, { { '\\', '|', -1, -1, '\\', '|', -1, -1, }, }, { { 'z', 'Z', -1, -1, 'z', 'Z', -1, -1, }, }, { { 'x', 'X', -1, -1, 'x', 'X', -1, -1, }, }, { { 'c', 'C', -1, -1, 'c', 'C', -1, -1, }, }, { { 'v', 'V', 0x16, 0x16, 'v', 'V', -1, -1, }, }, /* 0x30 */ { { 'b', 'B', -1, -1, 'b', 'B', -1, -1, }, }, { { 'n', 'N', -1, -1, 'n', 'N', -1, -1, }, }, { { 'm', 'M', 0x0d, 0x0d, 'm', 'M', 0x0d, 0x0d, }, }, { { ',', '<', -1, -1, ',', '<', -1, -1, }, }, { { '.', '>', -1, -1, '.', '>', -1, -1, }, }, { { '/', '?', -1, -1, '/', '?', -1, -1, }, }, { { -1, -1, -1, -1, -1, -1, -1, -1, }, }, { { '*', '*', -1, -1, '*', '*', -1, -1, }, }, /* 0x38 */ { { -1, -1, -1, -1, -1, -1, -1, -1, }, }, { { ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', }, }, }; static int pckbd_open (unused void *private) { return 0; } static int pckbd_close (unused void *private) { return 0; } static int pckbd_readb (void *private) { pckbd_t *kbd = private; int status, key, up, mod; int ret; for (ret = -1; ret < 0; ) { status = inb(kbd->io_base + PCKBD_STATUS_OFFSET); if (!(status & 1)) { /* No more data available */ break; } key = inb(kbd->io_base); up = (key & 0x80) != 0; key &= ~0x80; switch (key) { case 0: break; case L_ALT: mod = ALT; goto set_modifiers; case L_SHIFT: case R_SHIFT: mod = SHIFT; goto set_modifiers; case L_CTRL: #if 0 /* XXX: missing definition */ case R_CTRL: #endif mod = CTRL; set_modifiers: if (up) kbd->modifiers &= ~mod; else kbd->modifiers |= mod; break; default: /* We don't care about up events or unknown keys */ if (!up && key < kbd->maplen) ret = kbd->map[key].translate[kbd->modifiers]; break; } } return ret; } static cops_t pckbd_ops = { &pckbd_open, &pckbd_close, &pckbd_readb, NULL, }; int pckbd_register (void) { pckbd_t *kbd; kbd = malloc(sizeof(pckbd_t)); if (kbd == NULL) return -1; memset(kbd, 0, sizeof(pckbd_t)); /* Set IO base */ /* XXX: should be a parameter... */ kbd->io_base = PCKBD_IO_BASE; /* Set default keymap */ kbd->map = pc_map_us; kbd->maplen = sizeof(pc_map_us) / sizeof(kbdmap_t); /* Reset modifiers state */ kbd->modifiers = 0x00; chardev_register(CHARDEV_KBD, &pckbd_ops, kbd); return 0; }