root / proj / src / interrupts_func.c @ 273
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#include <lcom/lcf.h> |
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#include "interrupts_func.h" |
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#include "timer.h" |
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#include "i8254.h" |
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#include "keyboard.h" |
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#include "mouse.h" |
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#include "uart.h" |
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#include "utils.h" |
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#include "errors.h" |
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static int timer_subscribed = 0, timer_id; |
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static int keyboard_subscribed = 0, kbc_id; |
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static int mouse_subscribed = 0, mouse_id; |
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static int uart_subscribed = 0, uart_id; |
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static void (*const ih[])(void) = { timer_int_handler, |
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kbc_ih, |
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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mouse_ih, |
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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}; |
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int (subscribe_all)(void) { |
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/// Timer interrupt handling
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timer_id = 0;
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if(subscribe_timer_interrupt(TIMER0_IRQ, &timer_id)) {
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printf("%s: failed to subscribe timer interrupts.\n", __func__);
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return SBCR_ERROR;
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} |
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timer_subscribed = 1;
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/// Keyboard interrupt handling
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kbc_id = 0;
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if (subscribe_kbc_interrupt(KBC_IRQ, &kbc_id)) {
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printf("%s: failed to subscribe keyboard interrupts.\n", __func__);
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if (unsubscribe_all())
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printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
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return SBCR_ERROR;
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} |
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keyboard_subscribed = 1;
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/// Mouse interrupt handling
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mouse_id = 0;
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if (subscribe_mouse_interrupt(MOUSE_IRQ, &mouse_id)) { // subscribes mouse interrupts in exclusive mode |
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printf("%s: failed to subscribe mouse interrupts.\n", __func__);
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if (unsubscribe_all())
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printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
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return SBCR_ERROR;
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} |
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mouse_subscribed = 1;
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if (sys_irqdisable(&mouse_id)) { // temporarily disables our interrupts notifications |
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printf("%s: failed to disable mouse interrupts.\n", __func__);
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if (unsubscribe_all())
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printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
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return SBCR_ERROR;
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} |
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if (mouse_set_data_report(true)) { // enables mouse data reporting |
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printf("%s: failed to enable mouse data reporting.\n", __func__);
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if (unsubscribe_all())
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printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
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return SBCR_ERROR;
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} |
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if (sys_irqenable(&mouse_id)) { // re-enables our interrupts notifications |
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printf("%s: failed to enable mouse interrupts.\n", __func__);
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if (unsubscribe_all())
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printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
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return SBCR_ERROR;
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} |
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/// UART interrupt handling
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uart_id = 0;
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uart_set_bits_per_character(COM1_ADDR, 8);
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uart_set_stop_bits (COM1_ADDR, 2);
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uart_set_parity (COM1_ADDR, uart_parity_even); |
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uart_set_bit_rate (COM1_ADDR, 38400);
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uart_enable_int_rx (COM1_ADDR); |
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uart_disable_int_tx(COM1_ADDR); |
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if(subscribe_uart_interrupt(COM1_IRQ, &uart_id)) {
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printf("%s: failed to subscribe UART interrupts.\n", __func__);
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return SBCR_ERROR;
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} |
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uart_subscribed = 1;
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return SUCCESS;
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} |
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int (unsubscribe_all)(void) { |
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int r = SUCCESS;
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// Unsubscribe Timer Interrupts
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if (timer_subscribed) {
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if (unsubscribe_interrupt(&timer_id)) {
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printf("%s: failed to unsubcribe timer interrupts.\n");
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r = UNSBCR_ERROR; |
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} |
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timer_subscribed = 0;
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} |
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// Unsubscribe Keyboard interrupts
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if (keyboard_subscribed) {
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if (unsubscribe_interrupt(&kbc_id)) {
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printf("%s: failed to unsubcribe keyboard interrupts.\n");
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r = UNSBCR_ERROR; |
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} |
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keyboard_subscribed = 0;
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} |
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// Unsubscribe Mouse Interrupts
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if (mouse_subscribed) {
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if (sys_irqdisable(&mouse_id)) { // temporarily disables our interrupts notifications |
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printf("%s: failed to disable mouse interrupts.\n");
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r = UNSBCR_ERROR; |
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} |
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if (mouse_set_data_report(false)) { // disables mouse data reporting |
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printf("%s: failed to disable mouse data reporting.\n");
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r = UNSBCR_ERROR; |
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} |
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if (sys_irqenable(&mouse_id)) { // re-enables our interrupts notifications |
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printf("%s: failed to enable mouse interrupts.\n");
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r = UNSBCR_ERROR; |
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} |
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if (unsubscribe_interrupt(&mouse_id)) { // unsubscribes interrupts |
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printf("%s: failed to unsubcribe mouse interrupts.\n");
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r = UNSBCR_ERROR; |
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} |
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mouse_subscribed = 0;
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} |
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// Unsubscribe UART interrupts
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if (uart_subscribed) {
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if (unsubscribe_interrupt(&uart_id)) {
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printf("%s: failed to unsubcribe UART interrupts.\n");
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r = UNSBCR_ERROR; |
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} |
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uart_enable_int_rx(COM1_ADDR); |
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uart_enable_int_tx(COM1_ADDR); |
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uart_subscribed = 0;
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} |
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return r;
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} |
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void (interrupt_handler)(uint8_t handler) {
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if (handler >= 32) return; |
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if ((*ih[handler]) == NULL) return; |
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(*ih[handler])(); |
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} |
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void (timer_manager)() {
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} |
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void (mouse_manager)() {
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} |