Release 4.12 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/bitops.h>
#include <linux/timecounter.h>
#include <linux/types.h>
#define ARCH_TIMER_TYPE_CP15 BIT(0)
#define ARCH_TIMER_TYPE_MEM BIT(1)
#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,
};
enum arch_timer_ppi_nr {
ARCH_TIMER_PHYS_SECURE_PPI,
ARCH_TIMER_PHYS_NONSECURE_PPI,
ARCH_TIMER_VIRT_PPI,
ARCH_TIMER_HYP_PPI,
ARCH_TIMER_MAX_TIMER_PPI
};
enum arch_timer_spi_nr {
ARCH_TIMER_PHYS_SPI,
ARCH_TIMER_VIRT_SPI,
ARCH_TIMER_MAX_TIMER_SPI
};
#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_MEM_MAX_FRAMES 8
#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;
};
struct arch_timer_mem_frame {
bool valid;
phys_addr_t cntbase;
size_t size;
int phys_irq;
int virt_irq;
};
struct arch_timer_mem {
phys_addr_t cntctlbase;
size_t size;
struct arch_timer_mem_frame frame[ARCH_TIMER_MEM_MAX_FRAMES];
};
#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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark Rutland | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
static inline u64 arch_timer_read_counter(void)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark Rutland | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
#endif
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark Rutland | 83 | 32.68% | 1 | 8.33% |
| Fu Wei | 77 | 30.31% | 3 | 25.00% |
| Sudeep KarkadaNagesha | 32 | 12.60% | 1 | 8.33% |
| Marc Zyngier | 20 | 7.87% | 1 | 8.33% |
| Julien Grall | 19 | 7.48% | 2 | 16.67% |
| Stephen Boyd | 17 | 6.69% | 2 | 16.67% |
| Will Deacon | 5 | 1.97% | 1 | 8.33% |
| Richard Cochran | 1 | 0.39% | 1 | 8.33% |
| Total | 254 | 100.00% | 12 | 100.00% |
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