forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
110 lines
2.5 KiB
110 lines
2.5 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
/* |
|
* Copyright (C) 2012 ARM Ltd. |
|
*/ |
|
#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_HYP_VIRT_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_PERIOD_US 100 |
|
#define ARCH_TIMER_EVT_STREAM_FREQ \ |
|
(USEC_PER_SEC / ARCH_TIMER_EVT_STREAM_PERIOD_US) |
|
|
|
struct arch_timer_kvm_info { |
|
struct timecounter timecounter; |
|
int virtual_irq; |
|
int physical_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); |
|
extern bool arch_timer_evtstrm_available(void); |
|
|
|
#else |
|
|
|
static inline u32 arch_timer_get_rate(void) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline u64 arch_timer_read_counter(void) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline bool arch_timer_evtstrm_available(void) |
|
{ |
|
return false; |
|
} |
|
|
|
#endif |
|
|
|
#endif
|
|
|