mirror of
https://git.rtems.org/rtems-libbsd/
synced 2025-05-13 17:59:16 +08:00
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*
|
|
* Copyright (c) 2016 embedded brains GmbH. All rights reserved.
|
|
*
|
|
* embedded brains GmbH
|
|
* Dornierstr. 4
|
|
* 82178 Puchheim
|
|
* Germany
|
|
* <rtems@embedded-brains.de>
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*/
|
|
|
|
#ifndef __MACHINE_COUNTER_H__
|
|
#define __MACHINE_COUNTER_H__
|
|
|
|
#include <sys/pcpu.h>
|
|
|
|
#include <rtems/score/isrlevel.h>
|
|
|
|
#ifdef RTEMS_SMP
|
|
#define _BSD_EARLY_COUNTER_SIZE (CPU_MAXIMUM_PROCESSORS * UMA_PCPU_ALLOC_SIZE)
|
|
#else
|
|
#define _BSD_EARLY_COUNTER_SIZE 1
|
|
#endif
|
|
|
|
extern uint64_t _bsd_early_counter[_BSD_EARLY_COUNTER_SIZE];
|
|
|
|
#define EARLY_COUNTER (&_bsd_early_counter[0])
|
|
|
|
#ifdef IN_SUBR_COUNTER_C
|
|
|
|
static inline uint64_t
|
|
counter_u64_read_one(uint64_t *p, int cpu)
|
|
{
|
|
|
|
return (*((uint64_t *)((char *)p + UMA_PCPU_ALLOC_SIZE * cpu)));
|
|
}
|
|
|
|
static inline uint64_t
|
|
counter_u64_fetch_inline(uint64_t *p)
|
|
{
|
|
uint64_t r;
|
|
uint32_t cpu;
|
|
|
|
r = 0;
|
|
for (cpu = 0; cpu < _SMP_Get_processor_maximum(); ++cpu) {
|
|
r += counter_u64_read_one((uint64_t *)p, cpu);
|
|
}
|
|
|
|
return (r);
|
|
}
|
|
|
|
static inline void
|
|
counter_u64_zero_inline(counter_u64_t c)
|
|
{
|
|
uint32_t cpu;
|
|
|
|
for (cpu = 0; cpu < _SMP_Get_processor_maximum(); ++cpu) {
|
|
*((uint64_t *)((char *)c + UMA_PCPU_ALLOC_SIZE * cpu)) = 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static inline void
|
|
counter_u64_add_protected(counter_u64_t c, int64_t inc)
|
|
{
|
|
|
|
*(uint64_t *)zpcpu_get(c) += inc;
|
|
}
|
|
|
|
static inline void
|
|
counter_u64_add(counter_u64_t c, int64_t inc)
|
|
{
|
|
ISR_Level level;
|
|
|
|
_ISR_Local_disable(level);
|
|
counter_u64_add_protected(c, inc);
|
|
_ISR_Local_enable(level);
|
|
}
|
|
|
|
#endif /* ! __MACHINE_COUNTER_H__ */
|