minix/sys/arch/arm/include/cpu_counter.h
Ben Gras 0222260628 import / small alignment of many arm includes
Change-Id: I4a7631409190474546c0ba03312c23454c99d62a
2014-03-03 20:47:05 +01:00

79 lines
2.5 KiB
C

/* $NetBSD: cpu_counter.h,v 1.2 2012/08/29 18:45:40 matt Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _ARM_CPU_COUNTER_H_
#define _ARM_CPU_COUNTER_H_
/*
* ARM specific support for CPU counter (ARM11 and Cortex only).
* If __HAVE_CPU_COUNTER is defined for any other CPU_*, it will crash.
*/
#ifdef _KERNEL
#include <sys/cpu.h>
#if defined(CPU_CORTEX) || defined(CPU_ARM11)
#define cpu_hascounter() (curcpu()->ci_data.cpu_cc_freq != 0)
#else
#define cpu_hascounter() false
#endif
#define cpu_counter() cpu_counter32()
#if defined(CPU_CORTEX) || defined(CPU_ARM11)
static __inline uint32_t
cpu_counter32(void)
{
#if defined(CPU_CORTEX) && defined(CPU_ARM11)
const bool cortex_p = CPU_ID_CORTEX_P(curcpu()->ci_cpu_id);
#elif defined(CPU_CORTEX)
const bool cortex_p = true;
#elif defined(CPU_ARM11)
const bool cortex_p = false;
#endif
if (cortex_p)
return armreg_pmccntr_read();
else
return armreg_pmccntrv6_read();
}
#endif
static __inline uint64_t
cpu_frequency(struct cpu_info *ci)
{
return ci->ci_data.cpu_cc_freq;
}
#endif /* _KERNEL */
#endif /* _ARM_CPU_COUNTER_H_ */