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/*
* Copyright (c) 2014, Linaro Limited
* Copyright (c) 2014, Texas Instruments Incorporated
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <odp/schedule.h>
#include <odp/plat/align.h>
#include <odp/queue.h>
#include <odp/shared_memory.h>
#include <odp/pool.h>
#include <odp_internal.h>
#include <odp/config.h>
#include <odp/plat/debug.h>
#include <odp/thread.h>
#include <odp/time.h>
#include <odp/spinlock.h>
#include <odp/hints.h>
#include <odp_queue_internal.h>
#include <odp_packet_io_internal.h>
int odp_schedule_init_global(void)
{
ODP_DBG("Schedule init ... ");
if (openem_init_global()) {
ODP_ERR("OpenEM init failed\n");
return -1;
}
ODP_DBG("done\n");
return 0;
}
int odp_schedule_term_global(void)
{
if (openem_term_global())
ODP_ERR("OpenEM termination failed\n");
return 0;
}
int odp_schedule_init_local(int thr_id)
{
if (openem_init_local(thr_id)) {
ODP_ERR("OpenEM local init failed\n");
return -1;
}
return 0;
}
int odp_schedule_term_local(void)
{
if (openem_term_local()) {
ODP_ERR("OpenEM local term failed, thr: %d\n", odp_thread_id());
return -1;
}
return 0;
}
odp_event_t odp_schedule(odp_queue_t *out_queue, uint64_t wait)
{
int first = 1;
odp_time_t time, start_time, diff, wtime;
em_event_t em_event;
em_queue_t em_queue = EM_QUEUE_UNDEF;
odp_event_t event = ODP_EVENT_INVALID;
odp_pr_dbg("scheduling ....\n");
odp_schedule_release_atomic();
while (1) {
em_event = ti_em_schedule_once(&em_queue);
if (odp_likely(em_event != EM_EVENT_UNDEF)) {
odp_queue_t src_queue = _odp_queue_from_em_queue(em_queue);
event = (odp_event_t)ti_em_to_packet(em_event);
/**
* Convert buffer pointers to virtual addresses as the
* rest of code assumes them to be virtual.
*
* @todo: Double convertion phy->virt->phy->virt is
* done, because EM returns virtual address and McSDK
* doesn't have API to convert only buffers. That can
* be fixed.
* Better to postpone conversion until buffer is needed.
*/
Osal_qmssConvertDescPhyToVirt(0, Osal_qmssVirtToPhy(
_odp_ev_to_cppi_desc(event)));
if (out_queue)
*out_queue = src_queue;
/* Packets from PKTIN queues have to be updated */
if (odp_queue_type(src_queue) == ODP_QUEUE_TYPE_PKTIN)
pktin_update_event(event,
_odp_queue_to_qentry(src_queue));
odp_pr_dbg("Got event from EM: %x, em_queue: %x, odp_queue: %x, buf: %p, thr: %d\n",
em_event,
em_queue,
_odp_queue_from_em_queue(em_queue),
event,
odp_thread_id());
break;
}
if (wait == ODP_SCHED_WAIT)
continue;
if (wait == ODP_SCHED_NO_WAIT)
break;
if (first) {
wtime = odp_time_local_from_ns(wait);
start_time = odp_time_local();
first = 0;
continue;
}
time = odp_time_local();
diff = odp_time_diff(time, start_time);
if (odp_time_cmp(wtime, diff) < 0)
break;
}
return event;
}
int odp_schedule_multi(odp_queue_t *out_queue, uint64_t wait,
odp_event_t out_ev[], int num)
{
ODP_AS_STR(num > 0, "Zero buffers requested\n");
out_ev[0] = odp_schedule(out_queue, wait);
return (out_ev[0] == ODP_EVENT_INVALID) ? 0 : 1;
}
void odp_schedule_pause(void)
{
ti_em_schedule_pause();
}
void odp_schedule_resume(void)
{
ti_em_schedule_resume();
}
uint64_t odp_schedule_wait_time(uint64_t ns)
{
return ns;
}
int odp_schedule_num_prio(void)
{
return ODP_CONFIG_SCHED_PRIOS;
}
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