512a0200de
All the kernel header files now use pargma once rather than the ifndef, as the pre-processed C files do not change while header files are protected with pargma once. This will also solve any naming issues caused by ifndef.
75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/*
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* Copyright 2020, Data61, CSIRO (ABN 41 687 119 230)
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#pragma once
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#include <config.h>
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#define TISR_OVF_FLAG BIT(1)
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#define TISR_MATCH_FLAG BIT(0)
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struct timer {
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uint32_t tidr; /* GPTIMER_TIDR 0x00 */
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uint32_t padding1[3];
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uint32_t cfg; /* GPTIMER_CFG 0x10 */
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uint32_t tistat; /* GPTIMER_TISTAT 0x14 */
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uint32_t tisr; /* GPTIMER_TISR 0x18 */
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uint32_t tier; /* GPTIMER_TIER 0x1C */
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uint32_t twer; /* GPTIMER_TWER 0x20 */
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uint32_t tclr; /* GPTIMER_TCLR 0x24 */
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uint32_t tcrr; /* GPTIMER_TCRR 0x28 */
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uint32_t tldr; /* GPTIMER_TLDR 0x2C */
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uint32_t ttgr; /* GPTIMER_TTGR 0x30 */
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uint32_t twps; /* GPTIMER_TWPS 0x34 */
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uint32_t tmar; /* GPTIMER_TMAR 0x38 */
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uint32_t tcar1; /* GPTIMER_TCAR1 0x3C */
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uint32_t tsicr; /* GPTIMER_TSICR 0x40 */
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uint32_t tcar2; /* GPTIMER_TCAR2 0x44 */
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uint32_t tpir; /* GPTIMER_TPIR 0x48 */
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uint32_t tnir; /* GPTIMER_TNIR 0x4C */
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uint32_t tcvr; /* GPTIMER_TCVR 0x50 */
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uint32_t tocr; /* GPTIMER_TOCR 0x54 */
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uint32_t towr; /* GPTIMER_TOWR 0x58 */
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};
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typedef volatile struct timer timer_t;
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extern timer_t *timer;
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#ifdef CONFIG_KERNEL_MCS
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/* this is a 32-bit timer, track high_bits here */
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extern uint32_t high_bits;
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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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timer->tmar = (uint32_t) deadline;
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}
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/** DONT_TRANSLATE */
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static inline ticks_t getCurrentTime(void)
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{
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bool_t overflow = !!(timer->tisr & TISR_OVF_FLAG);
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return (((uint64_t) high_bits + overflow) << 32llu) + timer->tcrr;
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}
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/** DONT_TRANSLATE */
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static inline void ackDeadlineIRQ(void)
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{
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/* check if this is an overflow irq */
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if (timer->tisr & TISR_OVF_FLAG) {
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high_bits++;
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}
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/* ack everything */
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timer->tisr = TISR_OVF_FLAG | TISR_MATCH_FLAG;
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assert((timer->tisr & TISR_OVF_FLAG) == 0);
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}
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#else /* CONFIG_KERNEL_MCS */
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static inline void resetTimer(void)
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{
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timer->tisr = TISR_OVF_FLAG;
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ackInterrupt(KERNEL_TIMER_IRQ);
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}
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#endif /* !CONFIG_KERNEL_MCS */
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