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FEAT: Caps lock support in ps2 driver

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boreddevnl 2026-04-11 16:12:37 +02:00
parent 8b77e8c48e
commit 85427041de
1 changed files with 36 additions and 8 deletions
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44
src/dev/ps2.c
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@ -23,11 +23,10 @@ uint64_t timer_handler(registers_t *regs) {
extern void k_beep_process(void);
k_beep_process();
outb(0x20, 0x20); // EOI after processing to prevent nested timer interrupts
outb(0x20, 0x20);
extern uint64_t process_schedule(uint64_t current_rsp);
uint64_t new_rsp = process_schedule((uint64_t)regs);
// SMP: Wake AP cores to run their assigned processes
if (smp_cpu_count() > 1) {
lapic_send_ipi_all();
}
@ -37,9 +36,27 @@ uint64_t timer_handler(registers_t *regs) {
// --- Keyboard ---
static bool shift_pressed = false;
static bool caps_lock_on = false;
bool ps2_ctrl_pressed = false;
static bool extended_scancode = false;
static void ps2_kbd_wait_write(void) {
uint32_t timeout = 100000;
while (timeout--) {
if ((inb(0x64) & 2) == 0) return;
}
}
static void ps2_update_leds(void) {
uint8_t led_status = 0;
if (caps_lock_on) led_status |= 4;
ps2_kbd_wait_write();
outb(0x60, 0xED);
ps2_kbd_wait_write();
outb(0x60, led_status);
}
static char scancode_map[128] = {
0, 27, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b',
'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
@ -67,7 +84,7 @@ uint64_t keyboard_handler(registers_t *regs) {
if (scancode == 0x1D) {
ps2_ctrl_pressed = true;
extended_scancode = false; // Reset if Ctrl is pressed (prevents E0 1D bug)
extended_scancode = false;
} else if (scancode == 0x9D) {
ps2_ctrl_pressed = false;
extended_scancode = false;
@ -77,10 +94,9 @@ uint64_t keyboard_handler(registers_t *regs) {
extern process_t* process_get_current(void);
process_t* proc = process_get_current();
if (proc && proc->is_user && proc->is_terminal_proc && proc->ui_window) {
// Only kill if the associated terminal window is focused
if (((Window*)proc->ui_window)->focused) {
extern uint64_t process_terminate_current(void);
outb(0x20, 0x20); // EOI before context switch
outb(0x20, 0x20);
return process_terminate_current();
}
}
@ -90,7 +106,10 @@ uint64_t keyboard_handler(registers_t *regs) {
shift_pressed = true;
} else if (scancode == 0xAA || scancode == 0xB6) { // Shift Up
shift_pressed = false;
} else if (!(scancode & 0x80)) { // Key Press (not release)
} else if (scancode == 0x3A) { // Caps Lock Down
caps_lock_on = !caps_lock_on;
ps2_update_leds();
} else if (!(scancode & 0x80)) { // Key Press
if (extended_scancode) {
extended_scancode = false;
switch (scancode) {
@ -102,6 +121,10 @@ uint64_t keyboard_handler(registers_t *regs) {
} else {
char c = shift_pressed ? scancode_map_shift[scancode] : scancode_map[scancode];
if (c) {
if (caps_lock_on) {
if (c >= 'a' && c <= 'z') c -= 32;
else if (c >= 'A' && c <= 'Z') c += 32;
}
wm_handle_key(c, true);
}
}
@ -115,8 +138,13 @@ uint64_t keyboard_handler(registers_t *regs) {
case 0x4D: wm_handle_key(20, false); break; // Right arrow
}
} else {
char c = shift_pressed ? scancode_map_shift[scancode & 0x7F] : scancode_map[scancode & 0x7F];
uint8_t base_scancode = scancode & 0x7F;
char c = shift_pressed ? scancode_map_shift[base_scancode] : scancode_map[base_scancode];
if (c) {
if (caps_lock_on) {
if (c >= 'a' && c <= 'z') c -= 32;
else if (c >= 'A' && c <= 'Z') c += 32;
}
wm_handle_key(c, false);
}
}
@ -177,7 +205,7 @@ void mouse_init(void) {
mouse_write(0xF6);
mouse_read();
// Enable Wheel - Magic Sequence
// Enable Wheel
mouse_write(0xF3); mouse_read(); mouse_write(200); mouse_read();
mouse_write(0xF3); mouse_read(); mouse_write(100); mouse_read();
mouse_write(0xF3); mouse_read(); mouse_write(80); mouse_read();