[25] | 1 | /* |
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[142] | 2 | * hal_interrupt.c - Implementation of interrupt handler for x86_64 |
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[25] | 3 | * |
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[142] | 4 | * Copyright (c) 2017 Maxime Villard |
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[25] | 5 | * |
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| 6 | * This file is part of ALMOS-MKH. |
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| 7 | * |
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| 8 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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| 9 | * under the terms of the GNU General Public License as published by |
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| 10 | * the Free Software Foundation; version 2.0 of the License. |
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| 11 | * |
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| 12 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU General Public License |
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[142] | 18 | * along with ALMOS-MKH.; if not, write to the Free Software Foundation, |
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[25] | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |
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| 22 | #include <hal_types.h> |
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| 23 | #include <kernel_config.h> |
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| 24 | #include <thread.h> |
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| 25 | #include <do_interrupt.h> |
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| 26 | #include <hal_interrupt.h> |
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| 27 | |
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[142] | 28 | #include <hal_kentry.h> |
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[152] | 29 | #include <hal_apic.h> |
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[48] | 30 | #include <hal_internal.h> |
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| 31 | |
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[142] | 32 | /* -------------------------------------------------------------------------- */ |
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| 33 | |
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| 34 | /* |
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| 35 | * Timer interrupt |
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| 36 | */ |
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| 37 | void hal_timer_intr(struct trapframe *tf) |
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[25] | 38 | { |
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[142] | 39 | x86_printf("-> got timer: rip=%Z\n", tf->tf_rip); |
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| 40 | return; |
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| 41 | } |
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| 42 | |
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| 43 | /* -------------------------------------------------------------------------- */ |
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| 44 | |
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[152] | 45 | /* |
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| 46 | * Serial Port (COM1) interrupt |
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| 47 | */ |
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| 48 | void hal_com1_intr(struct trapframe *tf) |
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| 49 | { |
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[154] | 50 | static char prev; |
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| 51 | uint8_t chan; |
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| 52 | char c; |
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[152] | 53 | |
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[154] | 54 | if (prev & 0x80) { |
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| 55 | /* the previous char was the channel number (tty) */ |
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| 56 | c = hal_com_read(); |
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| 57 | chan = prev & 0x7F; |
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| 58 | x86_printf("-> got com [%z,'%c']\n", (uint64_t)chan, c); |
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| 59 | prev = 0; |
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| 60 | } else { |
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| 61 | prev = hal_com_read(); |
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| 62 | } |
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| 63 | |
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[152] | 64 | return; |
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| 65 | } |
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| 66 | |
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| 67 | /* -------------------------------------------------------------------------- */ |
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| 68 | |
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[142] | 69 | #define PS2_DATA 0x60 |
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| 70 | |
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| 71 | #define PS2_STATUS 0x64 |
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| 72 | # define STATUS_OUT_FULL 0x00 |
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| 73 | # define STATUS_IN_FULL 0x01 |
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| 74 | # define STATUS_SYS_FLAG 0x02 |
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| 75 | |
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| 76 | #define PS2_CMD 0x64 |
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| 77 | |
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| 78 | /* |
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| 79 | * US scancode table, found on the internet. |
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| 80 | */ |
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| 81 | unsigned char scancode_US[128] = |
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| 82 | { |
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| 83 | 0, 27, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', |
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| 84 | '\b', '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', |
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| 85 | '\n', |
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| 86 | 0, /* 29 - Control */ |
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| 87 | 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`', |
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| 88 | 0, /* Left shift */ |
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| 89 | '\\', 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', |
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| 90 | 0, /* Right shift */ |
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| 91 | '*', |
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| 92 | 0, /* Alt */ |
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| 93 | ' ', /* Space bar */ |
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| 94 | 0, /* Caps lock */ |
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| 95 | 0, /* 59 - F1 key ... > */ |
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| 96 | 0, 0, 0, 0, 0, 0, 0, 0, |
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| 97 | 0, /* < ... F10 */ |
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| 98 | 0, /* 69 - Num lock*/ |
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| 99 | 0, /* Scroll Lock */ |
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| 100 | 0, /* Home key */ |
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| 101 | 0, /* Up Arrow */ |
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| 102 | 0, /* Page Up */ |
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| 103 | '-', |
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| 104 | 0, /* Left Arrow */ |
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| 105 | 0, |
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| 106 | 0, /* Right Arrow */ |
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| 107 | '+', |
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| 108 | 0, /* 79 - End key*/ |
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| 109 | 0, /* Down Arrow */ |
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| 110 | 0, /* Page Down */ |
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| 111 | 0, /* Insert Key */ |
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| 112 | 0, /* Delete Key */ |
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| 113 | 0, 0, 0, |
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| 114 | 0, /* F11 Key */ |
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| 115 | 0, /* F12 Key */ |
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| 116 | 0, /* All other keys are undefined */ |
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| 117 | }; |
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| 118 | |
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| 119 | /* |
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| 120 | * Keyboard interrupt (8042 PS/2) |
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| 121 | */ |
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| 122 | void hal_keyboard_intr(struct trapframe *tf) |
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| 123 | { |
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| 124 | uint64_t val; |
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| 125 | |
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| 126 | do { |
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| 127 | val = in8(PS2_STATUS); |
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| 128 | } while ((val & STATUS_IN_FULL) == 0); |
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| 129 | |
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| 130 | val = in8(PS2_DATA); |
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| 131 | |
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| 132 | x86_printf("-> got keyboard: rip=%Z key=%c ", tf->tf_rip, scancode_US[val]); |
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| 133 | |
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| 134 | if (val & 0x80) |
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| 135 | x86_printf("[released]\n"); |
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| 136 | else |
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| 137 | x86_printf("[pressed]\n"); |
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| 138 | |
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| 139 | return; |
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| 140 | } |
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| 141 | |
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| 142 | |
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| 143 | /* -------------------------------------------------------------------------- */ |
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| 144 | |
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| 145 | void hal_do_interrupt( thread_t * this, |
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| 146 | reg_t * regs_tbl ) |
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| 147 | { |
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[48] | 148 | x86_panic((char *)__func__); |
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[25] | 149 | } |
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