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2025-08-12 22:16:57 +02:00

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C
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020 Linaro Ltd
* Copyright (c) 2022-2024, Qualcomm Innovation Center, Inc. All rights reserved.
*/
#ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
#define __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <soc/qcom/rpm-smd.h>
#define RPM_BUS_MASTER_REQ 0x73616d62
#define RPM_BUS_SLAVE_REQ 0x766c7362
#define QCOM_MAX_LINKS 128
#define RPM_SLEEP_SET MSM_RPM_CTX_SLEEP_SET
#define RPM_ACTIVE_SET MSM_RPM_CTX_ACTIVE_SET
#define RPM_CLK_MAX_LEVEL INT_MAX
#define RPM_CLK_MIN_LEVEL 19200000
#define DEFAULT_UTIL_FACTOR 100
#define to_qcom_provider(_provider) \
container_of(_provider, struct qcom_icc_provider, provider)
enum qcom_icc_rpm_mas_field_type {
RPM_MASTER_FIELD_BW = 0x00007762,
RPM_MASTER_FIELD_BW_T0 = 0x30747762,
RPM_MASTER_FIELD_BW_T1 = 0x31747762,
RPM_MASTER_FIELD_BW_T2 = 0x32747762,
};
enum qcom_icc_rpm_context {
RPM_SLEEP_CXT,
RPM_ACTIVE_CXT,
RPM_NUM_CXT
};
/**
* struct qcom_icc_provider - Qualcomm specific interconnect provider
* @provider: generic interconnect provider
* @dev: reference to the NoC device
* @qos_clks: the clk_bulk_data table of QoS clocks
* @num_qos_clks: the total number of clk_bulk_data entries
* @bus_clks: the clk_bulk_data table of bus clocks
* @num_clks: the total number of clk_bulk_data entries
* @bus_clk_cur_rate: current frequency of bus clock
* @keepalive: flag used to indicate whether a keepalive is required
* @init: flag to determine when init has completed.
*/
struct qcom_icc_provider {
struct icc_provider provider;
struct device *dev;
struct regmap *regmap;
struct list_head probe_list;
struct clk_bulk_data *qos_clks;
int num_qos_clks;
struct clk_bulk_data *bus_clks;
int num_clks;
u32 util_factor;
u64 bus_clk_cur_rate[RPM_NUM_CXT];
bool keepalive;
bool init;
};
/**
* struct qcom_icc_node - Qualcomm specific interconnect nodes
* @name: the node name used in debugfs
* @id: a unique node identifier
* @links: an array of nodes where we can go next while traversing
* @num_links: the total number of @links
* @channels: num of channels at this node
* @buswidth: width of the interconnect between a node and the bus (bytes)
* @last_sum_avg: aggregated average bandwidth from previous aggregation
* @sum_avg: current sum aggregate value of all avg bw requests
* @max_peak: current max aggregate value of all peak bw requests
* @mas_rpm_id: RPM id for devices that are bus masters
* @slv_rpm_id: RPM id for devices that are bus slaves
* @rate: current bus clock rate in Hz
* @dirty: flag used to indicate whether the node needs to be committed
*/
struct qcom_icc_node {
unsigned char *name;
u16 id;
u16 links[QCOM_MAX_LINKS];
u16 num_links;
u16 channels;
u16 buswidth;
u64 last_sum_avg[RPM_NUM_CXT];
u64 sum_avg[RPM_NUM_CXT];
u64 max_peak[RPM_NUM_CXT];
int mas_rpm_id;
int slv_rpm_id;
u64 rate;
struct regmap *regmap;
struct qcom_icc_qosbox *qosbox;
const struct qcom_icc_noc_ops *noc_ops;
bool dirty;
};
struct qcom_icc_desc {
struct qcom_icc_node **nodes;
size_t num_nodes;
};
int qcom_icc_rpm_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
u32 peak_bw, u32 *agg_avg, u32 *agg_peak);
int qcom_icc_rpm_set(struct icc_node *src, struct icc_node *dst);
void qcom_icc_rpm_pre_aggregate(struct icc_node *node);
int qcom_icc_get_bw_stub(struct icc_node *node, u32 *avg, u32 *peak);
#endif