"arch_timer_read_counter"是一个用于读取处理器计时器计数值的函数。该函数的作用是返回一个表示当前计时器计数值的整数。通过读取计时器的计数值,我们可以了解到目前为止经过的时间间隔或计时器自启动以来所经过的时间。 第四部分:如何使用"arch_timer_read_counter"? 要使用"arch_timer_read_counter"函数,我们首...
static inline u64 arch_counter_get_cntpct(void) { u64 cnt; isb(); return arch_timer_reg_read_stable(cntpct_el0); cnt = arch_timer_reg_read_stable(cntpct_el0); arch_counter_enforce_ordering(cnt); return cnt; } static inline u64 arch_counter_get_cntvct(void) { u64 cnt; isb();...
Arch_timer_read_counter 1. Introduction to arch_timer_read_counter Arch_timer_read_counter is a function in the ARM architecture used to read the value of the Generic Timer counter register. This function provides the current value of the counter, which can be used for various timing and ...
Expand Up@@ -80,15 +80,6 @@ static inline u32 arch_timer_get_cntfrq(void) returnval; } staticinlineu64arch_counter_get_cntpct(void) { u64cval; isb(); asmvolatile("mrrc p15, 0, %Q0, %R0, c14":"=r"(cval)); returncval; ...
drivers/clocksource/arm_arch_timer.c 1272 的 arch_timer_of_init 调用1090 的 arch_timer_register 1090 的arch_timer_register 在1138 处使用 cpu hotplug 模块函数,注册 CPUHP_AP_ARM_ARCH_TIMER_STARTING 回调 arch_timer_starting_cpu 和 arch_timer_dying_cpu ...
static int arch_timer_ppi2;static DEFINE_CLOCK_DATA(cd);static struct clock_event_device __percpu *arch_timer_evt;/** Architected system timer support.*/#define ARCH_TIMER_CTRL_ENABLE (1 << 0)#define ARCH_TIMER_CTRL_IT_MASK (1 << 1)...
以s3c2440 ARM9核为例： 一:s3c2440 ARM处理器特性： 1、S3C2440支持60个中断源，含子中断源...
AArch64 4个 Non-Secure Timer的寄存器 权限问题: 可以看到,最核心的寄存器是cntpct_el0,他是系统真实的时钟滴答,在EL0、EL1 去读这个寄存器的时候,可以被EL2拦截到(取决于CNTHCTL_EL2和HCR_EL2也就是hypervisor的配置,是否要拦截read cntpct_el0),而在EL2和EL3读取时不受限制 ...
timer_channel_output_shadow_config(TIMx, TIMCHx, TIMER_OC_SHADOW_DISABLE); timer_primary_output_config(TIMx, ENABLE); timer_auto_reload_shadow_enable(TIMx); timer_enable(TIMx); } STM32: static void get_oc_func(uint32_t TIMCHx, void (**TIM_OCInit)(TIM_TypeDef*, TIM_OCInitTypeDef*)...
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