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https://github.com/Mathewnd/Astral.git
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Matheus
164 lines
2.9 KiB
C
164 lines
2.9 KiB
C
#include <arch/ps2kbd.h>
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#include <stdbool.h>
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#include <arch/io.h>
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#include <arch/cpu.h>
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#include <kernel/interrupt.h>
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#include <arch/apic.h>
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#include <kernel/keyboard.h>
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#include <arch/ps2.h>
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#include <logging.h>
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static char codes[128] = {
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KEYCODE_RESERVED,
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KEYCODE_ESCAPE,
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KEYCODE_1,
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KEYCODE_2,
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KEYCODE_3,
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KEYCODE_4,
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KEYCODE_5,
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KEYCODE_6,
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KEYCODE_7,
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KEYCODE_8,
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KEYCODE_9,
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KEYCODE_0,
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KEYCODE_MINUS,
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KEYCODE_EQUAL,
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KEYCODE_BACKSPACE,
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KEYCODE_TAB,
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KEYCODE_Q,
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KEYCODE_W,
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KEYCODE_E,
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KEYCODE_R,
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KEYCODE_T,
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KEYCODE_Y,
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KEYCODE_U,
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KEYCODE_I,
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KEYCODE_O,
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KEYCODE_P,
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KEYCODE_LEFTBRACE,
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KEYCODE_RIGHTBRACE,
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KEYCODE_ENTER,
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KEYCODE_LEFTCTRL,
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KEYCODE_A,
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KEYCODE_S,
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KEYCODE_D,
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KEYCODE_F,
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KEYCODE_G,
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KEYCODE_H,
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KEYCODE_J,
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KEYCODE_K,
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KEYCODE_L,
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KEYCODE_SEMICOLON,
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KEYCODE_APOSTROPHE,
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KEYCODE_GRAVE,
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KEYCODE_LEFTSHIFT,
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KEYCODE_BACKSLASH,
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KEYCODE_Z,
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KEYCODE_X,
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KEYCODE_C,
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KEYCODE_V,
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KEYCODE_B,
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KEYCODE_N,
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KEYCODE_M,
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KEYCODE_COMMA,
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KEYCODE_DOT,
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KEYCODE_SLASH,
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KEYCODE_RIGHTSHIFT,
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KEYCODE_KEYPADASTERISK,
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KEYCODE_LEFTALT,
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KEYCODE_SPACE,
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KEYCODE_CAPSLOCK,
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KEYCODE_F1,
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KEYCODE_F2,
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KEYCODE_F3,
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KEYCODE_F4,
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KEYCODE_F5,
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KEYCODE_F6,
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KEYCODE_F7,
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KEYCODE_F8,
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KEYCODE_F9,
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KEYCODE_F10,
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KEYCODE_NUMLOCK,
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KEYCODE_SCROLLLOCK,
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KEYCODE_KEYPAD7,
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KEYCODE_KEYPAD8,
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KEYCODE_KEYPAD9,
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KEYCODE_KEYPADMINUS,
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KEYCODE_KEYPAD4,
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KEYCODE_KEYPAD5,
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KEYCODE_KEYPAD6,
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KEYCODE_KEYPADPLUS,
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KEYCODE_KEYPAD1,
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KEYCODE_KEYPAD2,
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KEYCODE_KEYPAD3,
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KEYCODE_KEYPAD0,
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KEYCODE_KEYPADDOT,
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0, 0, 0,
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KEYCODE_F11,
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KEYCODE_F12
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};
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static char extendedcodes[128] = {
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[0x1C] = KEYCODE_KEYPADENTER,
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[0x1D] = KEYCODE_RIGHTCTRL,
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[0x35] = KEYCODE_KEYPADSLASH, // k/
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[0x38] = KEYCODE_RIGHTALT, // altgr
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[0x47] = KEYCODE_HOME, // home
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[0x48] = KEYCODE_UP, // up
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[0x49] = KEYCODE_PAGEUP, // page up
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[0x4B] = KEYCODE_LEFT, // left
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[0x4D] = KEYCODE_RIGHT, // right
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[0x4F] = KEYCODE_END, // end
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[0x50] = KEYCODE_DOWN, // down
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[0x51] = KEYCODE_PAGEDOWN, // page down
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[0x52] = KEYCODE_INSERT, // insert
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[0x53] = KEYCODE_DELETE // delete
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};
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#define KEYBOARDIRQ 1
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keyboard_t *kb;
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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(0x60);
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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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kbpacket_t packet;
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packet.flags = 0;
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if (scancode & 0x80) {
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packet.flags = KBPACKET_FLAGS_RELEASED;
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scancode &= 0x7F;
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}
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char *tab = codes;
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if (extended) {
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tab = extendedcodes;
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extended = false;
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}
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packet.keycode = tab[scancode];
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if (!packet.keycode)
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return;
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keyboard_sendpacket(kb, &packet);
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}
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void ps2kbd_init(){
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// clear PS/2 buffer to make sure its empty
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inb(PS2_PORT_DATA);
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isr_t *isr = interrupt_allocate(kbdisr, arch_apic_eoi, IPL_KEYBOARD);
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__assert(isr);
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arch_ioapic_setirq(KEYBOARDIRQ, isr->id & 0xff, _cpu()->id, false);
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kb = keyboard_new();
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__assert(kb);
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printf("ps2kbd: irq enabled with vector %u\n", isr->id & 0xff);
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}
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