root / proj / src / interrupts_func.c @ 245
History | View | Annotate | Download (5.51 KB)
| 1 | 178 | up20180642 | #include <lcom/lcf.h> |
|---|---|---|---|
| 2 | |||
| 3 | 154 | up20180655 | #include "interrupts_func.h" |
| 4 | #include "timer.h" |
||
| 5 | #include "i8254.h" |
||
| 6 | #include "kbc_macros.h" |
||
| 7 | #include "keyboard.h" |
||
| 8 | #include "mouse.h" |
||
| 9 | #include "utils.h" |
||
| 10 | #include "errors.h" |
||
| 11 | |||
| 12 | static int timer_subscribed = 0, timer_id; |
||
| 13 | |||
| 14 | static int keyboard_subscribed = 0, kbc_id; |
||
| 15 | |||
| 16 | static int mouse_subscribed = 0, mouse_id; |
||
| 17 | |||
| 18 | static void (*const ih[])(void) = { timer_int_handler, |
||
| 19 | kbc_ih, |
||
| 20 | NULL,
|
||
| 21 | NULL,
|
||
| 22 | NULL,
|
||
| 23 | NULL,
|
||
| 24 | NULL,
|
||
| 25 | NULL,
|
||
| 26 | NULL,
|
||
| 27 | NULL,
|
||
| 28 | NULL,
|
||
| 29 | NULL,
|
||
| 30 | mouse_ih, |
||
| 31 | NULL,
|
||
| 32 | NULL,
|
||
| 33 | NULL,
|
||
| 34 | NULL,
|
||
| 35 | NULL,
|
||
| 36 | NULL,
|
||
| 37 | NULL,
|
||
| 38 | NULL,
|
||
| 39 | NULL,
|
||
| 40 | NULL,
|
||
| 41 | NULL,
|
||
| 42 | NULL,
|
||
| 43 | NULL,
|
||
| 44 | NULL,
|
||
| 45 | NULL,
|
||
| 46 | NULL,
|
||
| 47 | NULL,
|
||
| 48 | NULL,
|
||
| 49 | NULL,
|
||
| 50 | }; |
||
| 51 | |||
| 52 | int (subscribe_all)(void) { |
||
| 53 | |||
| 54 | /// Timer interrupt handling
|
||
| 55 | timer_id = 0;
|
||
| 56 | if(subscribe_timer_interrupt(TIMER0_IRQ, &timer_id)) {
|
||
| 57 | printf("%s: failed to subscribe timer interrupts.\n", __func__);
|
||
| 58 | return SBCR_ERROR;
|
||
| 59 | } |
||
| 60 | timer_subscribed = 1;
|
||
| 61 | |||
| 62 | /// Keyboard interrupt handling
|
||
| 63 | kbc_id = 0;
|
||
| 64 | if (subscribe_kbc_interrupt(KBC_IRQ, &kbc_id)) {
|
||
| 65 | printf("%s: failed to subscribe keyboard interrupts.\n", __func__);
|
||
| 66 | if (unsubscribe_all())
|
||
| 67 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
|
||
| 68 | return SBCR_ERROR;
|
||
| 69 | } |
||
| 70 | keyboard_subscribed = 1;
|
||
| 71 | |||
| 72 | /// Mouse interrupt handling
|
||
| 73 | mouse_id = 0;
|
||
| 74 | if (subscribe_mouse_interrupt(MOUSE_IRQ, &mouse_id)) { // subscribes mouse interrupts in exclusive mode |
||
| 75 | printf("%s: failed to subscribe mouse interrupts.\n", __func__);
|
||
| 76 | if (unsubscribe_all())
|
||
| 77 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
|
||
| 78 | return SBCR_ERROR;
|
||
| 79 | } |
||
| 80 | mouse_subscribed = 1;
|
||
| 81 | if (sys_irqdisable(&mouse_id)) { // temporarily disables our interrupts notifications |
||
| 82 | printf("%s: failed to disable mouse interrupts.\n", __func__);
|
||
| 83 | if (unsubscribe_all())
|
||
| 84 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
|
||
| 85 | return SBCR_ERROR;
|
||
| 86 | } |
||
| 87 | if (mouse_set_data_report(true)) { // enables mouse data reporting |
||
| 88 | printf("%s: failed to enable mouse data reporting.\n", __func__);
|
||
| 89 | if (unsubscribe_all())
|
||
| 90 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
|
||
| 91 | return SBCR_ERROR;
|
||
| 92 | } |
||
| 93 | if (sys_irqenable(&mouse_id)) { // re-enables our interrupts notifications |
||
| 94 | printf("%s: failed to enable mouse interrupts.\n", __func__);
|
||
| 95 | if (unsubscribe_all())
|
||
| 96 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n");
|
||
| 97 | return SBCR_ERROR;
|
||
| 98 | } |
||
| 99 | |||
| 100 | return SUCCESS;
|
||
| 101 | } |
||
| 102 | |||
| 103 | int (unsubscribe_all)(void) { |
||
| 104 | int r = SUCCESS;
|
||
| 105 | |||
| 106 | // Unsubscribe Timer Interrupts
|
||
| 107 | if (timer_subscribed) {
|
||
| 108 | if (unsubscribe_interrupt(&timer_id)) {
|
||
| 109 | printf("%s: failed to unsubcribe timer interrupts.\n");
|
||
| 110 | r = UNSBCR_ERROR; |
||
| 111 | } |
||
| 112 | timer_subscribed = 0;
|
||
| 113 | } |
||
| 114 | |||
| 115 | // Unsubscribe Keyboard interrupts
|
||
| 116 | if (keyboard_subscribed) {
|
||
| 117 | if (unsubscribe_interrupt(&kbc_id)) {
|
||
| 118 | printf("%s: failed to unsubcribe keyboard interrupts.\n");
|
||
| 119 | r = UNSBCR_ERROR; |
||
| 120 | } |
||
| 121 | keyboard_subscribed = 0;
|
||
| 122 | } |
||
| 123 | |||
| 124 | // Unsubscribe Mouse Interrupts
|
||
| 125 | if (mouse_subscribed) {
|
||
| 126 | if (sys_irqdisable(&mouse_id)) { // temporarily disables our interrupts notifications |
||
| 127 | printf("%s: failed to disable mouse interrupts.\n");
|
||
| 128 | r = UNSBCR_ERROR; |
||
| 129 | } |
||
| 130 | if (mouse_set_data_report(false)) { // disables mouse data reporting |
||
| 131 | printf("%s: failed to disable mouse data reporting.\n");
|
||
| 132 | r = UNSBCR_ERROR; |
||
| 133 | } |
||
| 134 | if (sys_irqenable(&mouse_id)) { // re-enables our interrupts notifications |
||
| 135 | printf("%s: failed to enable mouse interrupts.\n");
|
||
| 136 | r = UNSBCR_ERROR; |
||
| 137 | } |
||
| 138 | if (unsubscribe_interrupt(&mouse_id)) { // unsubscribes interrupts |
||
| 139 | printf("%s: failed to unsubcribe mouse interrupts.\n");
|
||
| 140 | r = UNSBCR_ERROR; |
||
| 141 | } |
||
| 142 | mouse_subscribed = 0;
|
||
| 143 | } |
||
| 144 | |||
| 145 | return r;
|
||
| 146 | } |
||
| 147 | |||
| 148 | void interrupt_handler(uint8_t handler) {
|
||
| 149 | if (handler >= 32) return; |
||
| 150 | if ((*ih[handler]) == NULL) return; |
||
| 151 | (*ih[handler])(); |
||
| 152 | } |