forked from Mirrors/opensbi
12e7af9ab7
Generic mdelay() and udelay() functions can be provided by the sbi_timer framework if timer frequency is available in the timer instance provided by the platform support or timer driver. This patch adds timer frequency (timer_freq) member in the struct sbi_timer_device for above purpose. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Xiang W <wxjstz@126.com>
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#ifndef __SBI_TIMER_H__
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#define __SBI_TIMER_H__
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#include <sbi/sbi_types.h>
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/** Timer hardware device */
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struct sbi_timer_device {
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/** Name of the timer operations */
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char name[32];
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/** Frequency of timer in HZ */
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unsigned long timer_freq;
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/** Get free-running timer value */
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u64 (*timer_value)(void);
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/** Start timer event for current HART */
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void (*timer_event_start)(u64 next_event);
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/** Stop timer event for current HART */
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void (*timer_event_stop)(void);
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};
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struct sbi_scratch;
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/** Get timer value for current HART */
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u64 sbi_timer_value(void);
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/** Get virtualized timer value for current HART */
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u64 sbi_timer_virt_value(void);
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/** Get timer delta value for current HART */
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u64 sbi_timer_get_delta(void);
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/** Set timer delta value for current HART */
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void sbi_timer_set_delta(ulong delta);
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/** Set upper 32-bits of timer delta value for current HART */
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void sbi_timer_set_delta_upper(ulong delta_upper);
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/** Start timer event for current HART */
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void sbi_timer_event_start(u64 next_event);
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/** Process timer event for current HART */
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void sbi_timer_process(void);
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/** Get current timer device */
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const struct sbi_timer_device *sbi_timer_get_device(void);
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/** Register timer device */
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void sbi_timer_set_device(const struct sbi_timer_device *dev);
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/* Initialize timer */
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int sbi_timer_init(struct sbi_scratch *scratch, bool cold_boot);
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/* Exit timer */
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void sbi_timer_exit(struct sbi_scratch *scratch);
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#endif
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