cregit-Linux how code gets into the kernel

Release 4.7 include/clocksource/arm_arch_timer.h

/*
 * Copyright (C) 2012 ARM Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __CLKSOURCE_ARM_ARCH_TIMER_H

#define __CLKSOURCE_ARM_ARCH_TIMER_H

#include <linux/timecounter.h>
#include <linux/types.h>


#define ARCH_TIMER_CTRL_ENABLE		(1 << 0)

#define ARCH_TIMER_CTRL_IT_MASK		(1 << 1)

#define ARCH_TIMER_CTRL_IT_STAT		(1 << 2)


#define CNTHCTL_EL1PCTEN		(1 << 0)

#define CNTHCTL_EL1PCEN			(1 << 1)

#define CNTHCTL_EVNTEN			(1 << 2)

#define CNTHCTL_EVNTDIR			(1 << 3)

#define CNTHCTL_EVNTI			(0xF << 4)


enum arch_timer_reg {
	
ARCH_TIMER_REG_CTRL,
	
ARCH_TIMER_REG_TVAL,
};


#define ARCH_TIMER_PHYS_ACCESS		0

#define ARCH_TIMER_VIRT_ACCESS		1

#define ARCH_TIMER_MEM_PHYS_ACCESS	2

#define ARCH_TIMER_MEM_VIRT_ACCESS	3


#define ARCH_TIMER_USR_PCT_ACCESS_EN	(1 << 0) 
/* physical counter */

#define ARCH_TIMER_USR_VCT_ACCESS_EN	(1 << 1) 
/* virtual counter */

#define ARCH_TIMER_VIRT_EVT_EN		(1 << 2)

#define ARCH_TIMER_EVT_TRIGGER_SHIFT	(4)

#define ARCH_TIMER_EVT_TRIGGER_MASK	(0xF << ARCH_TIMER_EVT_TRIGGER_SHIFT)

#define ARCH_TIMER_USR_VT_ACCESS_EN	(1 << 8) 
/* virtual timer registers */

#define ARCH_TIMER_USR_PT_ACCESS_EN	(1 << 9) 
/* physical timer registers */


#define ARCH_TIMER_EVT_STREAM_FREQ	10000	
/* 100us */


struct arch_timer_kvm_info {
	
struct timecounter timecounter;
	
int virtual_irq;
};

#ifdef CONFIG_ARM_ARCH_TIMER

extern u32 arch_timer_get_rate(void);
extern u64 (*arch_timer_read_counter)(void);
extern struct arch_timer_kvm_info *arch_timer_get_kvm_info(void);

#else


static inline u32 arch_timer_get_rate(void) { return 0; }

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Total12100.00%1100.00%


static inline u64 arch_timer_read_counter(void) { return 0; }

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#endif #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
mark rutlandmark rutland8346.89%111.11%
sudeep karkadanageshasudeep karkadanagesha3218.08%111.11%
marc zyngiermarc zyngier2011.30%111.11%
julien gralljulien grall1910.73%222.22%
stephen boydstephen boyd179.60%222.22%
will deaconwill deacon52.82%111.11%
richard cochranrichard cochran10.56%111.11%
Total177100.00%9100.00%
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