root / proj / src / interrupts_func.c @ 325
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| 1 | 178 | up20180642 | #include <lcom/lcf.h> |
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| 2 | |||
| 3 | 154 | up20180655 | #include "interrupts_func.h" |
| 4 | #include "timer.h" |
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| 5 | #include "keyboard.h" |
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| 6 | #include "mouse.h" |
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| 7 | 287 | up20180642 | #include "hltp.h" |
| 8 | 154 | up20180655 | #include "utils.h" |
| 9 | #include "errors.h" |
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| 10 | |||
| 11 | static int timer_subscribed = 0, timer_id; |
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| 12 | |||
| 13 | static int keyboard_subscribed = 0, kbc_id; |
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| 14 | |||
| 15 | static int mouse_subscribed = 0, mouse_id; |
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| 16 | |||
| 17 | 263 | up20180642 | static int uart_subscribed = 0, uart_id; |
| 18 | |||
| 19 | 154 | up20180655 | static void (*const ih[])(void) = { timer_int_handler, |
| 20 | kbc_ih, |
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| 21 | NULL,
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| 22 | NULL,
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| 23 | NULL,
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| 24 | NULL,
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| 25 | NULL,
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| 26 | NULL,
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| 27 | NULL,
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| 28 | NULL,
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| 29 | NULL,
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| 30 | NULL,
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| 31 | mouse_ih, |
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| 32 | NULL,
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| 33 | NULL,
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| 34 | NULL,
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| 35 | NULL,
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| 36 | NULL,
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| 37 | NULL,
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| 38 | NULL,
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| 39 | NULL,
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| 40 | NULL,
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| 41 | NULL,
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| 42 | NULL,
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| 43 | NULL,
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| 44 | NULL,
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| 45 | NULL,
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| 46 | NULL,
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| 47 | NULL,
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| 48 | NULL,
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| 49 | NULL,
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| 50 | NULL,
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| 51 | }; |
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| 52 | 297 | up20180642 | /*
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| 53 | 287 | up20180642 | static void process_received(const uint8_t *p, const size_t sz){
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| 54 | void *q = NULL;
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| 55 | hltp_type t = hltp_interpret(p, sz, &q);
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| 56 | switch(t){
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| 57 | case hltp_type_string:{
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| 58 | char *s = q;
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| 59 | printf("%s\n", s);
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| 60 | } break;
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| 61 | default: break;
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| 62 | }
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| 63 | }
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| 64 | 297 | up20180642 | */
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| 65 | 154 | up20180655 | int (subscribe_all)(void) { |
| 66 | |||
| 67 | /// Timer interrupt handling
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| 68 | timer_id = 0;
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| 69 | if(subscribe_timer_interrupt(TIMER0_IRQ, &timer_id)) {
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| 70 | printf("%s: failed to subscribe timer interrupts.\n", __func__);
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| 71 | return SBCR_ERROR;
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| 72 | } |
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| 73 | timer_subscribed = 1;
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| 74 | |||
| 75 | /// Keyboard interrupt handling
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| 76 | kbc_id = 0;
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| 77 | if (subscribe_kbc_interrupt(KBC_IRQ, &kbc_id)) {
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| 78 | printf("%s: failed to subscribe keyboard interrupts.\n", __func__);
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| 79 | if (unsubscribe_all())
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| 80 | 321 | up20180642 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n", __func__);
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| 81 | 154 | up20180655 | return SBCR_ERROR;
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| 82 | } |
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| 83 | keyboard_subscribed = 1;
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| 84 | |||
| 85 | /// Mouse interrupt handling
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| 86 | mouse_id = 0;
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| 87 | if (subscribe_mouse_interrupt(MOUSE_IRQ, &mouse_id)) { // subscribes mouse interrupts in exclusive mode |
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| 88 | printf("%s: failed to subscribe mouse interrupts.\n", __func__);
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| 89 | if (unsubscribe_all())
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| 90 | 321 | up20180642 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n", __func__);
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| 91 | 154 | up20180655 | return SBCR_ERROR;
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| 92 | } |
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| 93 | mouse_subscribed = 1;
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| 94 | if (sys_irqdisable(&mouse_id)) { // temporarily disables our interrupts notifications |
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| 95 | printf("%s: failed to disable mouse interrupts.\n", __func__);
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| 96 | if (unsubscribe_all())
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| 97 | 321 | up20180642 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n", __func__);
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| 98 | 154 | up20180655 | return SBCR_ERROR;
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| 99 | } |
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| 100 | if (mouse_set_data_report(true)) { // enables mouse data reporting |
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| 101 | printf("%s: failed to enable mouse data reporting.\n", __func__);
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| 102 | if (unsubscribe_all())
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| 103 | 321 | up20180642 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n", __func__);
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| 104 | 154 | up20180655 | return SBCR_ERROR;
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| 105 | } |
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| 106 | if (sys_irqenable(&mouse_id)) { // re-enables our interrupts notifications |
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| 107 | printf("%s: failed to enable mouse interrupts.\n", __func__);
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| 108 | if (unsubscribe_all())
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| 109 | 321 | up20180642 | printf("%s: failed to unsubcribe driver, unexpected behaviour is expected.\n", __func__);
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| 110 | 154 | up20180655 | return SBCR_ERROR;
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| 111 | } |
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| 112 | |||
| 113 | 263 | up20180642 | /// UART interrupt handling
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| 114 | uart_id = 0;
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| 115 | 272 | up20180642 | uart_set_bits_per_character(COM1_ADDR, 8);
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| 116 | uart_set_stop_bits (COM1_ADDR, 2);
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| 117 | uart_set_parity (COM1_ADDR, uart_parity_even); |
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| 118 | uart_set_bit_rate (COM1_ADDR, 38400);
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| 119 | 263 | up20180642 | uart_enable_int_rx (COM1_ADDR); |
| 120 | 275 | up20180642 | uart_enable_int_tx(COM1_ADDR); |
| 121 | 263 | up20180642 | if(subscribe_uart_interrupt(COM1_IRQ, &uart_id)) {
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| 122 | printf("%s: failed to subscribe UART interrupts.\n", __func__);
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| 123 | return SBCR_ERROR;
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| 124 | } |
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| 125 | uart_subscribed = 1;
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| 126 | 297 | up20180642 | nctp_init(); |
| 127 | 263 | up20180642 | |
| 128 | 154 | up20180655 | return SUCCESS;
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| 129 | } |
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| 130 | |||
| 131 | int (unsubscribe_all)(void) { |
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| 132 | int r = SUCCESS;
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| 133 | |||
| 134 | // Unsubscribe Timer Interrupts
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| 135 | if (timer_subscribed) {
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| 136 | if (unsubscribe_interrupt(&timer_id)) {
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| 137 | 321 | up20180642 | printf("%s: failed to unsubcribe timer interrupts.\n", __func__);
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| 138 | 154 | up20180655 | r = UNSBCR_ERROR; |
| 139 | } |
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| 140 | timer_subscribed = 0;
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| 141 | } |
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| 142 | |||
| 143 | // Unsubscribe Keyboard interrupts
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| 144 | if (keyboard_subscribed) {
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| 145 | if (unsubscribe_interrupt(&kbc_id)) {
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| 146 | 321 | up20180642 | printf("%s: failed to unsubcribe keyboard interrupts.\n", __func__);
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| 147 | 154 | up20180655 | r = UNSBCR_ERROR; |
| 148 | } |
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| 149 | keyboard_subscribed = 0;
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| 150 | } |
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| 151 | |||
| 152 | // Unsubscribe Mouse Interrupts
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| 153 | if (mouse_subscribed) {
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| 154 | if (sys_irqdisable(&mouse_id)) { // temporarily disables our interrupts notifications |
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| 155 | 321 | up20180642 | printf("%s: failed to disable mouse interrupts.\n", __func__);
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| 156 | 154 | up20180655 | r = UNSBCR_ERROR; |
| 157 | } |
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| 158 | if (mouse_set_data_report(false)) { // disables mouse data reporting |
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| 159 | 321 | up20180642 | printf("%s: failed to disable mouse data reporting.\n", __func__);
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| 160 | 154 | up20180655 | r = UNSBCR_ERROR; |
| 161 | } |
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| 162 | if (sys_irqenable(&mouse_id)) { // re-enables our interrupts notifications |
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| 163 | 321 | up20180642 | printf("%s: failed to enable mouse interrupts.\n", __func__);
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| 164 | 154 | up20180655 | r = UNSBCR_ERROR; |
| 165 | } |
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| 166 | if (unsubscribe_interrupt(&mouse_id)) { // unsubscribes interrupts |
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| 167 | 321 | up20180642 | printf("%s: failed to unsubcribe mouse interrupts.\n", __func__);
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| 168 | 154 | up20180655 | r = UNSBCR_ERROR; |
| 169 | } |
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| 170 | mouse_subscribed = 0;
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| 171 | } |
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| 172 | |||
| 173 | 263 | up20180642 | // Unsubscribe UART interrupts
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| 174 | if (uart_subscribed) {
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| 175 | if (unsubscribe_interrupt(&uart_id)) {
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| 176 | 321 | up20180642 | printf("%s: failed to unsubcribe UART interrupts.\n", __func__);
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| 177 | 263 | up20180642 | r = UNSBCR_ERROR; |
| 178 | } |
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| 179 | uart_enable_int_rx(COM1_ADDR); |
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| 180 | uart_enable_int_tx(COM1_ADDR); |
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| 181 | uart_subscribed = 0;
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| 182 | } |
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| 183 | 275 | up20180642 | nctp_free(); |
| 184 | 263 | up20180642 | |
| 185 | 154 | up20180655 | return r;
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| 186 | } |
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| 187 | |||
| 188 | 250 | up20180655 | void (interrupt_handler)(uint8_t handler) {
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| 189 | 154 | up20180655 | if (handler >= 32) return; |
| 190 | if ((*ih[handler]) == NULL) return; |
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| 191 | (*ih[handler])(); |
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| 192 | } |
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| 193 | 250 | up20180655 | |
| 194 | 323 | up20180642 | int get_interrupts_vector(uint64_t *p){
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| 195 | 304 | up20180642 | int r;
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| 196 | |||
| 197 | *p = 0;
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| 198 | |||
| 199 | int ipc_status;
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| 200 | message msg; |
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| 201 | if ((r = driver_receive(ANY, &msg, &ipc_status)) != 0) { |
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| 202 | printf("driver_receive failed with %d", r);
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| 203 | return OTHER_ERROR;
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| 204 | } |
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| 205 | if (is_ipc_notify(ipc_status)) { /* received notification */ |
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| 206 | switch (_ENDPOINT_P(msg.m_source)) {
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| 207 | case HARDWARE: /* hardware interrupt notification */ |
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| 208 | *p = msg.m_notify.interrupts; |
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| 209 | return SUCCESS;
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| 210 | default: break; /* no other notifications expected: do nothing */ |
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| 211 | } |
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| 212 | } |
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| 213 | return SUCCESS;
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| 214 | } |