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https://github.com/Mathewnd/Astral.git
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174 lines
3.6 KiB
C
174 lines
3.6 KiB
C
#include <arch/apic.h>
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#include <arch/cpu.h>
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#include <arch/io.h>
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#include <arch/ps2.h>
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#include <arch/ps2kbd.h>
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#include <kernel/input.h>
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#include <kernel/interrupt.h>
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#include <logging.h>
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#include <stdbool.h>
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static uint8_t codes[128] = {
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INPUT_KEY_RESERVED,
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INPUT_KEY_ESC,
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INPUT_KEY_1,
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INPUT_KEY_2,
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INPUT_KEY_3,
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INPUT_KEY_4,
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INPUT_KEY_5,
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INPUT_KEY_6,
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INPUT_KEY_7,
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INPUT_KEY_8,
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INPUT_KEY_9,
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INPUT_KEY_0,
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INPUT_KEY_MINUS,
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INPUT_KEY_EQUAL,
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INPUT_KEY_BACKSPACE,
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INPUT_KEY_TAB,
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INPUT_KEY_Q,
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INPUT_KEY_W,
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INPUT_KEY_E,
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INPUT_KEY_R,
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INPUT_KEY_T,
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INPUT_KEY_Y,
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INPUT_KEY_U,
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INPUT_KEY_I,
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INPUT_KEY_O,
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INPUT_KEY_P,
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INPUT_KEY_LEFTBRACE,
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INPUT_KEY_RIGHTBRACE,
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INPUT_KEY_ENTER,
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INPUT_KEY_LEFTCTRL,
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INPUT_KEY_A,
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INPUT_KEY_S,
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INPUT_KEY_D,
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INPUT_KEY_F,
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INPUT_KEY_G,
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INPUT_KEY_H,
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INPUT_KEY_J,
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INPUT_KEY_K,
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INPUT_KEY_L,
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INPUT_KEY_SEMICOLON,
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INPUT_KEY_APOSTROPHE,
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INPUT_KEY_GRAVE,
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INPUT_KEY_LEFTSHIFT,
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INPUT_KEY_BACKSLASH,
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INPUT_KEY_Z,
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INPUT_KEY_X,
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INPUT_KEY_C,
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INPUT_KEY_V,
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INPUT_KEY_B,
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INPUT_KEY_N,
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INPUT_KEY_M,
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INPUT_KEY_COMMA,
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INPUT_KEY_DOT,
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INPUT_KEY_SLASH,
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INPUT_KEY_RIGHTSHIFT,
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INPUT_KEY_KPASTERISK,
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INPUT_KEY_LEFTALT,
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INPUT_KEY_SPACE,
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INPUT_KEY_CAPSLOCK,
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INPUT_KEY_F1,
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INPUT_KEY_F2,
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INPUT_KEY_F3,
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INPUT_KEY_F4,
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INPUT_KEY_F5,
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INPUT_KEY_F6,
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INPUT_KEY_F7,
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INPUT_KEY_F8,
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INPUT_KEY_F9,
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INPUT_KEY_F10,
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INPUT_KEY_NUMLOCK,
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INPUT_KEY_SCROLLLOCK,
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INPUT_KEY_KP7,
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INPUT_KEY_KP8,
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INPUT_KEY_KP9,
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INPUT_KEY_KPMINUS,
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INPUT_KEY_KP4,
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INPUT_KEY_KP5,
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INPUT_KEY_KP6,
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INPUT_KEY_KPPLUS,
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INPUT_KEY_KP1,
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INPUT_KEY_KP2,
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INPUT_KEY_KP3,
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INPUT_KEY_KP0,
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INPUT_KEY_KPDOT,
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0, 0, 0,
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INPUT_KEY_F11,
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INPUT_KEY_F12
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};
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static uint8_t extendedcodes[128] = {
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[0x1C] = INPUT_KEY_KPENTER,
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[0x1D] = INPUT_KEY_RIGHTCTRL,
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[0x35] = INPUT_KEY_KPSLASH, // k/
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[0x38] = INPUT_KEY_RIGHTALT, // altgr
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[0x47] = INPUT_KEY_HOME, // home
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[0x48] = INPUT_KEY_UP, // up
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[0x49] = INPUT_KEY_PAGEUP, // page up
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[0x4B] = INPUT_KEY_LEFT, // left
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[0x4D] = INPUT_KEY_RIGHT, // right
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[0x4F] = INPUT_KEY_END, // end
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[0x50] = INPUT_KEY_DOWN, // down
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[0x51] = INPUT_KEY_PAGEDOWN, // page down
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[0x52] = INPUT_KEY_INSERT, // insert
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[0x53] = INPUT_KEY_DELETE // delete
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};
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#define KEYBOARDIRQ 1
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static input_device_t *input_dev;
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static bool extended = false;
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static void kbdisr(isr_t *isr, context_t *ctx) {
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uint8_t scancode = inb(PS2_PORT_DATA);
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if (scancode == 0xE0) {
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extended = true;
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return;
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}
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uint8_t *table = codes;
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if (extended) {
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table = extendedcodes;
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extended = false;
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}
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bool released = (scancode & 0x80) != 0;
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scancode &= 0x7f;
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input_event_t event;
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event.type = INPUT_EV_KEY;
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event.code = table[scancode];
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if (event.code == INPUT_KEY_RESERVED)
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return;
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event.value = released ? 0 : 1;
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input_queue_packet(input_dev, &event, 1);
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}
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void ps2kbd_init() {
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isr_t *isr = interrupt_allocate(kbdisr, arch_apic_eoi, IPL_INPUT);
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__assert(isr);
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arch_ioapic_setirq(KEYBOARDIRQ, isr->id & 0xff, current_cpu_id(), false);
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input_dev = input_new();
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__assert(input_dev);
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input_dev->id_bus = INPUT_DEVICE_BUS_I8042;
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snprintf(input_dev->name, sizeof(input_dev->name), "PS/2 Keyboard");
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input_dev->id_version = 1;
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input_dev->ver_major = 1;
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input_dev->ver_minor = 0;
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input_dev->ver_patch = 0;
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bitmap_set(&input_dev->ev_bits, INPUT_EV_KEY, 1);
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for (int i = 0; i < 128; ++i) {
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if (codes[i] != INPUT_KEY_RESERVED)
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bitmap_set(&input_dev->key_bits, codes[i], 1);
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if (extendedcodes[i] != INPUT_KEY_RESERVED)
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bitmap_set(&input_dev->key_bits, extendedcodes[i], 1);
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}
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printf("ps2kbd: irq enabled with vector %u\n", isr->id & 0xff);
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}
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