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perf/amlogic: Add support for Amlogic meson G12 SoC DDR PMU driver

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Add support for Amlogic Meson G12 Series SOC - DDR bandwidth PMU driver
framework and interfaces. The PMU can not only monitor the total DDR
bandwidth, but also individual IP module bandwidth.

Signed-off-by: Jiucheng Xu <jiucheng.xu@amlogic.com>
Tested-by: Chris Healy <healych@amazon.com>
Link: https://lore.kernel.org/r/20221121021602.3306998-1-jiucheng.xu@amlogic.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jiucheng Xu
2022-11-21 10:15:58 +08:00
committed by Will Deacon
parent dcc7f001b4
commit 2016e2113d
8 changed files with 1048 additions and 0 deletions
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66
include/soc/amlogic/meson_ddr_pmu.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2022 Amlogic, Inc. All rights reserved.
*/
#ifndef __MESON_DDR_PMU_H__
#define __MESON_DDR_PMU_H__
#define MAX_CHANNEL_NUM 8
enum {
ALL_CHAN_COUNTER_ID,
CHAN1_COUNTER_ID,
CHAN2_COUNTER_ID,
CHAN3_COUNTER_ID,
CHAN4_COUNTER_ID,
CHAN5_COUNTER_ID,
CHAN6_COUNTER_ID,
CHAN7_COUNTER_ID,
CHAN8_COUNTER_ID,
COUNTER_MAX_ID,
};
struct dmc_info;
struct dmc_counter {
u64 all_cnt; /* The count of all requests come in/out ddr controller */
union {
u64 all_req;
struct {
u64 all_idle_cnt;
u64 all_16bit_cnt;
};
};
u64 channel_cnt[MAX_CHANNEL_NUM]; /* To save a DMC bandwidth-monitor channel counter */
};
struct dmc_hw_info {
void (*enable)(struct dmc_info *info);
void (*disable)(struct dmc_info *info);
/* Bind an axi line to a bandwidth-monitor channel */
void (*set_axi_filter)(struct dmc_info *info, int axi_id, int chann);
int (*irq_handler)(struct dmc_info *info,
struct dmc_counter *counter);
void (*get_counters)(struct dmc_info *info,
struct dmc_counter *counter);
int dmc_nr; /* The number of dmc controller */
int chann_nr; /* The number of dmc bandwidth monitor channels */
struct attribute **fmt_attr;
const u64 capability[2];
};
struct dmc_info {
const struct dmc_hw_info *hw_info;
void __iomem *ddr_reg[4];
unsigned long timer_value; /* Timer value in TIMER register */
void __iomem *pll_reg;
int irq_num; /* irq vector number */
};
int meson_ddr_pmu_create(struct platform_device *pdev);
int meson_ddr_pmu_remove(struct platform_device *pdev);
#endif /* __MESON_DDR_PMU_H__ */