87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* EXYNOS PPMU header
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __DEVFREQ_EXYNOS_PPMU_H
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#define __DEVFREQ_EXYNOS_PPMU_H __FILE__
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#include <linux/ktime.h>
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/* For PPMU Control */
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#define PPMU_ENABLE BIT(0)
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#define PPMU_DISABLE 0x0
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#define PPMU_CYCLE_RESET BIT(1)
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#define PPMU_COUNTER_RESET BIT(2)
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#define PPMU_ENABLE_COUNT0 BIT(0)
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#define PPMU_ENABLE_COUNT1 BIT(1)
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#define PPMU_ENABLE_COUNT2 BIT(2)
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#define PPMU_ENABLE_COUNT3 BIT(3)
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#define PPMU_ENABLE_CYCLE BIT(31)
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#define PPMU_CNTENS 0x10
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#define PPMU_FLAG 0x50
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#define PPMU_CCNT_OVERFLOW BIT(31)
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#define PPMU_CCNT 0x100
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#define PPMU_PMCNT0 0x110
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#define PPMU_PMCNT_OFFSET 0x10
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#define PMCNT_OFFSET(x) (PPMU_PMCNT0 + (PPMU_PMCNT_OFFSET * x))
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#define PPMU_BEVT0SEL 0x1000
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#define PPMU_BEVTSEL_OFFSET 0x100
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#define PPMU_BEVTSEL(x) (PPMU_BEVT0SEL + (ch * PPMU_BEVTSEL_OFFSET))
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/* For Event Selection */
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#define RD_DATA_COUNT 0x5
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#define WR_DATA_COUNT 0x6
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#define RDWR_DATA_COUNT 0x7
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enum ppmu_counter {
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PPMU_PMNCNT0,
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PPMU_PMCCNT1,
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PPMU_PMNCNT2,
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PPMU_PMNCNT3,
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PPMU_PMNCNT_MAX,
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};
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struct bus_opp_table {
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unsigned int idx;
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unsigned long clk;
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unsigned long volt;
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};
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struct exynos_ppmu {
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void __iomem *hw_base;
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unsigned int ccnt;
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unsigned int event[PPMU_PMNCNT_MAX];
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unsigned int count[PPMU_PMNCNT_MAX];
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unsigned long long ns;
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ktime_t reset_time;
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bool ccnt_overflow;
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bool count_overflow[PPMU_PMNCNT_MAX];
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};
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struct busfreq_ppmu_data {
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struct exynos_ppmu *ppmu;
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int ppmu_end;
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};
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void exynos_ppmu_reset(void __iomem *ppmu_base);
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void exynos_ppmu_setevent(void __iomem *ppmu_base, unsigned int ch,
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unsigned int evt);
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void exynos_ppmu_start(void __iomem *ppmu_base);
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void exynos_ppmu_stop(void __iomem *ppmu_base);
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unsigned int exynos_ppmu_read(void __iomem *ppmu_base, unsigned int ch);
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void busfreq_mon_reset(struct busfreq_ppmu_data *ppmu_data);
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void exynos_read_ppmu(struct busfreq_ppmu_data *ppmu_data);
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int exynos_get_busier_ppmu(struct busfreq_ppmu_data *ppmu_data);
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#endif /* __DEVFREQ_EXYNOS_PPMU_H */
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