bdc56112bd
Update the generic timer to implement the MCS kernels tickless timer
driver API and update all platforms that use the arm generic timers:
- bcm2837
- exynos5
- hikey
- imx7
- odroidc2
- tk1
- tx1
- tx2
- zynq7000
Also move the generic timer constants to machine.h to avoid a circular
dependency.
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/*
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* Copyright 2017, Data61
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* Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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* ABN 41 687 119 230.
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*
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* This software may be distributed and modified according to the terms of
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* the GNU General Public License version 2. Note that NO WARRANTY is provided.
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* See "LICENSE_GPLv2.txt" for details.
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*
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* @TAG(DATA61_GPL)
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*/
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#ifndef __DRIVERS_TIMER_ARM_GENERIC_H_
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#define __DRIVERS_TIMER_ARM_GENERIC_H_
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#include <config.h>
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#include <mode/machine.h>
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/* ARM generic timer implementation */
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#ifdef CONFIG_KERNEL_MCS
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#include <model/statedata.h>
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#include <api/types.h>
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/** DONT_TRANSLATE **/
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static inline ticks_t getCurrentTime(void)
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{
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ticks_t time;
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SYSTEM_READ_64(CNT_CT, time);
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return time;
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}
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/** DONT_TRANSLATE **/
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static inline void setDeadline(ticks_t deadline)
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{
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assert(deadline >= NODE_STATE(ksCurTime));
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SYSTEM_WRITE_64(CNT_CVAL, deadline);
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}
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static inline void ackDeadlineIRQ(void)
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{
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ticks_t deadline = UINT64_MAX;
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setDeadline(deadline);
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}
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#else /* CONFIG_KERNEL_MCS */
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#include <arch/machine/timer.h>
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static inline void resetTimer(void)
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{
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SYSTEM_WRITE_WORD(CNT_TVAL, TIMER_RELOAD);
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SYSTEM_WRITE_WORD(CNT_CTL, BIT(0));
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}
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#endif /* !CONFIG_KERNEL_MCS */
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BOOT_CODE void initGenericTimer(void);
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#endif /* __DRIVERS_TIMER_ARM_GENERIC_H_ */
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