arch.h

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/*
 * Copyright (c) 2020 Antony Pavlov <antonynpavlov@gmail.com>
 *
 * based on include/arch/sparc/arch.h
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_ARCH_MIPS_ARCH_H_
#define ZEPHYR_INCLUDE_ARCH_MIPS_ARCH_H_
 
#include <zephyr/arch/mips/thread.h>
#include <zephyr/arch/mips/exception.h>
#include <zephyr/arch/common/sys_bitops.h>
#include <zephyr/arch/common/sys_io.h>
#include <zephyr/arch/common/ffs.h>
 
#include <zephyr/irq.h>
#include <zephyr/sw_isr_table.h>
#include <zephyr/devicetree.h>
#include <mips/mipsregs.h>
 
#define ARCH_STACK_PTR_ALIGN 16
 
#define OP_LOADREG lw
#define OP_STOREREG sw
 
#define CP0_STATUS_DEF_RESTORE (ST0_EXL | ST0_IE)
 
#ifndef _ASMLANGUAGE
#include <zephyr/sys/util.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define STACK_ROUND_UP(x) ROUND_UP(x, ARCH_STACK_PTR_ALIGN)
 
void arch_irq_enable(unsigned int irq);
void arch_irq_disable(unsigned int irq);
int arch_irq_is_enabled(unsigned int irq);
void z_irq_spurious(const void *unused);
 
#define ARCH_IRQ_CONNECT(irq_p, priority_p, isr_p, isr_param_p, flags_p) \
        {                                                                \
                Z_ISR_DECLARE(irq_p, 0, isr_p, isr_param_p);             \
        }
 
static ALWAYS_INLINE unsigned int arch_irq_lock(void)
{
        uint32_t status = read_c0_status();
 
        if (status & ST0_IE) {
                write_c0_status(status & ~ST0_IE);
                return 1;
        }
        return 0;
}
 
static ALWAYS_INLINE void arch_irq_unlock(unsigned int key)
{
        uint32_t status = read_c0_status();
 
        if (key) {
                status |= ST0_IE;
        } else {
                status &= ~ST0_IE;
        }
 
        write_c0_status(status);
}
 
static ALWAYS_INLINE bool arch_irq_unlocked(unsigned int key)
{
        return key != 0;
}
 
static ALWAYS_INLINE void arch_nop(void)
{
        __asm__ volatile ("nop");
}
 
extern uint32_t sys_clock_cycle_get_32(void);
 
static inline uint32_t arch_k_cycle_get_32(void)
{
        return sys_clock_cycle_get_32();
}
 
extern uint64_t sys_clock_cycle_get_64(void);
 
static inline uint64_t arch_k_cycle_get_64(void)
{
        return sys_clock_cycle_get_64();
}
 
#ifdef __cplusplus
}
#endif
 
#endif /* _ASMLANGUAGE */
 
#endif /* ZEPHYR_INCLUDE_ARCH_MIPS_ARCH_H_ */