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/****************************************************************************
* arch/rgmp/src/rgmp.c
*
* Copyright (C) 2011 Yu Qiang. All rights reserved.
* Author: Yu Qiang <yuq825@gmail.com>
*
* This file is a part of NuttX:
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#include <rgmp/trap.h>
#include <rgmp/rtos.h>
#include <rgmp/arch/arch.h>
#include <nuttx/config.h>
#include <nuttx/init.h>
#include <nuttx/arch.h>
#include <nuttx/sched.h>
#include <nuttx/kmalloc.h>
#include <semaphore.h>
#include <queue.h>
#include <stdlib.h>
#include <arch/arch.h>
#include <os_internal.h>
int nest_irq = 0;
// the default time is 10ms
#ifdef CONFIG_MSEC_PER_TICK
const unsigned int rtos_tick_time = CONFIG_MSEC_PER_TICK;
#else
const unsigned int rtos_tick_time = 10;
#endif
void rtos_entry(void)
{
os_start();
}
void *rtos_get_page(void)
{
return memalign(PTMEMSIZE, PTMEMSIZE);
}
void rtos_free_page(void *page)
{
free(page);
}
void *rtos_kmalloc(int size)
{
return kmalloc(size);
}
void rtos_kfree(void *addr)
{
kfree(addr);
}
/**
* The interrupt can be nested. The pair of rtos_enter_interrupt()
* and rtos_exit_interrupt() make sure the context switch is
* performed only in the last IRQ exit.
*/
void rtos_enter_interrupt(void)
{
nest_irq++;
}
void rtos_exit_interrupt(void)
{
local_irq_disable();
nest_irq--;
if (!nest_irq) {
struct tcb_s *rtcb = current_task;
struct tcb_s *ntcb;
if (rtcb->xcp.sigdeliver) {
rtcb->xcp.ctx.tf = current_regs;
push_xcptcontext(&rtcb->xcp);
}
ntcb = (struct tcb_s*)g_readytorun.head;
// switch needed
if (rtcb != ntcb) {
rtcb->xcp.ctx.tf = current_regs;
current_task = ntcb;
rgmp_switch_to(&ntcb->xcp.ctx);
}
}
}
void rtos_timer_isr(void *data)
{
sched_process_timer();
}
/**
* RTOS semaphore operation
*/
int rtos_sem_init(struct semaphore *sem, int val)
{
if ((sem->sem = kmalloc(sizeof(sem_t))) == NULL)
return -1;
return sem_init(sem->sem, 0, val);
}
int rtos_sem_up(struct semaphore *sem)
{
return sem_post(sem->sem);
}
int rtos_sem_down(struct semaphore *sem)
{
return sem_wait(sem->sem);
}
void rtos_stop_running(void)
{
extern void nuttx_arch_exit(void);
local_irq_disable();
nuttx_arch_exit();
while(1) {
arch_hlt();
}
}
int rtos_vnet_init(struct rgmp_vnet *vnet)
{
extern int vnet_init(struct rgmp_vnet *vnet);
return vnet_init(vnet);
}
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