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#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <stdio.h>
#include "encoding.h"
#include "platform.h"
#include "eos.h"
#include "msgq.h"
#include "event.h"
EOSMsgQ _eos_event_q;
static EOSMsgItem event_q_array[EOS_EVT_SIZE_Q];
static eos_evt_handler_t evt_handler[EOS_EVT_MAX_EVT + 1];
__attribute__ ((section (".itim")))
static void evtq_handler(unsigned char type, unsigned char *buffer, uint16_t len) {
unsigned char idx = (type & EOS_EVT_MASK) >> 4;
if (idx && (idx <= EOS_EVT_MAX_EVT)) {
evt_handler[idx](type, buffer, len);
} else {
eos_evtq_bad_handler(type, buffer, len);
}
}
int eos_evtq_init(uint8_t wakeup_cause) {
int i;
evt_handler[0] = evtq_handler;
for (i=0; i<EOS_EVT_MAX_EVT; i++) {
evt_handler[i + 1] = eos_evtq_bad_handler;
}
eos_msgq_init(&_eos_event_q, event_q_array, EOS_EVT_SIZE_Q);
return EOS_OK;
}
__attribute__ ((section (".itim")))
int eos_evtq_push(unsigned char type, unsigned char *buffer, uint16_t len) {
clear_csr(mstatus, MSTATUS_MIE);
int ret = eos_msgq_push(&_eos_event_q, type, buffer, len);
set_csr(mstatus, MSTATUS_MIE);
return ret;
}
__attribute__ ((section (".itim")))
int eos_evtq_push_isr(unsigned char type, unsigned char *buffer, uint16_t len) {
return eos_msgq_push(&_eos_event_q, type, buffer, len);
}
__attribute__ ((section (".itim")))
void eos_evtq_pop(unsigned char *type, unsigned char **buffer, uint16_t *len) {
clear_csr(mstatus, MSTATUS_MIE);
eos_msgq_pop(&_eos_event_q, type, buffer, len);
set_csr(mstatus, MSTATUS_MIE);
}
__attribute__ ((section (".itim")))
void eos_evtq_pop_isr(unsigned char *type, unsigned char **buffer, uint16_t *len) {
eos_msgq_pop(&_eos_event_q, type, buffer, len);
}
int eos_evtq_get(unsigned char type, unsigned char **buffer, uint16_t *len) {
int rv = 0;
clear_csr(mstatus, MSTATUS_MIE);
rv = eos_msgq_find(&_eos_event_q, type, NULL, 0, buffer, len);
set_csr(mstatus, MSTATUS_MIE);
}
int eos_evtq_find(unsigned char type, unsigned char *selector, uint16_t sel_len, unsigned char **buffer, uint16_t *len) {
int rv = 0;
clear_csr(mstatus, MSTATUS_MIE);
rv = eos_msgq_find(&_eos_event_q, type, selector, sel_len, buffer, len);
set_csr(mstatus, MSTATUS_MIE);
}
void eos_evtq_wait(unsigned char type, unsigned char *selector, uint16_t sel_len, unsigned char **buffer, uint16_t *len) {
int rv = 0;
while(!rv) {
clear_csr(mstatus, MSTATUS_MIE);
rv = eos_msgq_find(&_eos_event_q, type, selector, sel_len, buffer, len);
if (!rv) {
unsigned char _type;
unsigned char *_buffer;
uint16_t _len;
eos_msgq_pop(&_eos_event_q, &_type, &_buffer, &_len);
if (_type) {
set_csr(mstatus, MSTATUS_MIE);
evt_handler[0](_type, _buffer, _len);
} else {
asm volatile ("wfi");
set_csr(mstatus, MSTATUS_MIE);
}
} else {
set_csr(mstatus, MSTATUS_MIE);
}
}
}
void eos_evtq_flush(void) {
clear_csr(mstatus, MSTATUS_MIE);
eos_evtq_flush_isr();
set_csr(mstatus, MSTATUS_MIE);
}
void eos_evtq_flush_isr(void) {
unsigned char type;
unsigned char *buffer;
uint16_t len;
do {
eos_msgq_pop(&_eos_event_q, &type, &buffer, &len);
if (type) {
set_csr(mstatus, MSTATUS_MIE);
evt_handler[0](type, buffer, len);
clear_csr(mstatus, MSTATUS_MIE);
}
} while (type);
}
__attribute__ ((section (".itim")))
void eos_evtq_loop(void) {
int foo = 1;
while(foo) {
eos_evtq_exec();
}
}
__attribute__ ((section (".itim")))
void eos_evtq_exec(void) {
unsigned char type;
unsigned char *buffer;
uint16_t len;
clear_csr(mstatus, MSTATUS_MIE);
eos_msgq_pop(&_eos_event_q, &type, &buffer, &len);
if (type) {
set_csr(mstatus, MSTATUS_MIE);
evt_handler[0](type, buffer, len);
} else {
asm volatile ("wfi");
set_csr(mstatus, MSTATUS_MIE);
}
}
void eos_evtq_bad_handler(unsigned char type, unsigned char *buffer, uint16_t len) {
printf("EVT BAD HANDLER:0x%x\n", type);
}
void eos_evtq_set_handler(unsigned char type, eos_evt_handler_t handler) {
unsigned char idx = (type & EOS_EVT_MASK) >> 4;
if (handler == NULL) handler = eos_evtq_bad_handler;
if (idx <= EOS_EVT_MAX_EVT) evt_handler[idx] = handler;
}
__attribute__ ((section (".itim")))
eos_evt_handler_t eos_evtq_get_handler(unsigned char type) {
unsigned char idx = (type & EOS_EVT_MASK) >> 4;
if (idx <= EOS_EVT_MAX_EVT) return evt_handler[idx];
return NULL;
}
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