kbd.c (2407B)
1 #include <libc.h> 2 #include "libk.h" 3 #include "kbd.h" 4 #include "idt.h" 5 #include "cpufunc.h" 6 #include "vga.h" 7 8 #define KBD_CMD 0x60 9 #define KBD_PRESSED 0x80 10 #define KBD_LSHIFT 0x2a 11 #define KBD_RSHIFT 0x36 12 #define KBD_LSHIFT_REL 0xaa 13 #define KBD_RSHIFT_REL 0xb6 14 15 static void kbd_callback(struct regs *); 16 17 static u_char kbdus_upper[128] = { 18 0, /* Error */ 19 27, /* Escape */ 20 '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', 21 '_', '+', '\b', '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', 22 '{', '}', '\n', 23 0, /* Control */ 24 'A', 'S', 'D', 'F', 'G', 25 'H', 'J', 'K', 'L', ':', '"', '~', 26 0, /* Left Shift */ 27 '|', 'Z', 'X', 28 'C', 'V', 'B', 'N', 'M', '<', '>', '?', 29 0, /* Right Shift */ 30 '*', 31 0, /* Alt */ 32 ' ', 33 0, /* Caps Lock */ 34 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* F1-F10 */ 35 0, /* Num Lock */ 36 0, /* Scroll Lock */ 37 0, /* Home Key */ 38 0, /* Up Arrow */ 39 0, /* Page Up */ 40 '-', 41 0, /* Left Arrow */ 42 0, 43 0, /* Right Arrow */ 44 '+', 45 0, /* End Key */ 46 0, /* Down Arrow */ 47 0, /* Page Down */ 48 0, /* Insert Key */ 49 0, /* Delete Key */ 50 0, 0, 0, 51 0, 0, /* F11, F12 */ 52 0, /* The rest are undefined */ 53 }; 54 55 /* 56 * XXX: is there a correlation so that we can do math instead of having 2 57 * tables? 58 */ 59 static u_char kbdus_lower[128] = { 60 0, /* Error */ 61 27, /* Escape */ 62 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', 63 '-', '=', '\b', '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', 64 '[', ']', '\n', 65 0, /* Control */ 66 'a', 's', 'd', 'f', 'g', 67 'h', 'j', 'k', 'l', ';', '\'', '`', 68 0, /* Left Shift */ 69 '\\', 'z', 'x', 70 'c', 'v', 'b', 'n', 'm', ',', '.', '/', 71 0, /* Right Shift */ 72 '*', 73 0, /* Alt */ 74 ' ', 75 0, /* Caps Lock */ 76 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* F1-F10 */ 77 0, /* Num Lock */ 78 0, /* Scroll Lock */ 79 0, /* Home Key */ 80 0, /* Up Arrow */ 81 0, /* Page Up */ 82 '-', 83 0, /* Left Arrow */ 84 0, 85 0, /* Right Arrow */ 86 '+', 87 0, /* End Key */ 88 0, /* Down Arrow */ 89 0, /* Page Down */ 90 0, /* Insert Key */ 91 0, /* Delete Key */ 92 0, 0, 0, 93 0, 0, /* F11, F12 */ 94 0, /* The rest are undefined */ 95 }; 96 97 static void 98 kbd_callback(struct regs *r) 99 { 100 u_int8_t sc; 101 int shift = 0; 102 103 if ((sc = inb(KBD_CMD)) & KBD_PRESSED) { 104 } else { 105 /* TODO: shift */ 106 if (kbdus_lower[sc] == 'r') { 107 dump_regs(r); 108 return; 109 } 110 vga_putc(shift ? kbdus_upper[sc] : kbdus_lower[sc]); 111 } 112 UNUSED(r); 113 } 114 115 void 116 kbd_init(void) 117 { 118 intr_register_handler(IRQ1, kbd_callback); 119 printf("kbd on irq 1\n"); 120 }