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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020 Linaro Ltd
*/
#ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
#define __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
#include <linux/soc/qcom/smd-rpm.h>
#include <dt-bindings/interconnect/qcom,rpm-icc.h>
#include <linux/clk.h>
#include <linux/interconnect-provider.h>
#include <linux/platform_device.h>
#define RPM_BUS_MASTER_REQ 0x73616d62
#define RPM_BUS_SLAVE_REQ 0x766c7362
#define to_qcom_provider(_provider) \
container_of(_provider, struct qcom_icc_provider, provider)
enum qcom_icc_type {
QCOM_ICC_NOC,
QCOM_ICC_BIMC,
QCOM_ICC_QNOC,
};
/**
* struct rpm_clk_resource - RPM bus clock resource
* @resource_type: RPM resource type of the clock resource
* @clock_id: index of the clock resource of a specific resource type
* @branch: whether the resource represents a branch clock
*/
struct rpm_clk_resource {
u32 resource_type;
u32 clock_id;
bool branch;
};
/**
* struct qcom_icc_provider - Qualcomm specific interconnect provider
* @provider: generic interconnect provider
* @num_intf_clks: the total number of intf_clks clk_bulk_data entries
* @type: the ICC provider type
* @regmap: regmap for QoS registers read/write access
* @qos_offset: offset to QoS registers
* @ab_coeff: a percentage-based coefficient for compensating the AB calculations
* @ib_coeff: an inverse-percentage-based coefficient for compensating the IB calculations
* @bus_clk_rate: bus clock rate in Hz
* @bus_clk_desc: a pointer to a rpm_clk_resource description of bus clocks
* @bus_clk: a pointer to a HLOS-owned bus clock
* @intf_clks: a clk_bulk_data array of interface clocks
* @keep_alive: whether to always keep a minimum vote on the bus clocks
* @is_on: whether the bus is powered on
*/
struct qcom_icc_provider {
struct icc_provider provider;
int num_intf_clks;
enum qcom_icc_type type;
struct regmap *regmap;
unsigned int qos_offset;
u16 ab_coeff;
u16 ib_coeff;
u32 bus_clk_rate[QCOM_SMD_RPM_STATE_NUM];
const struct rpm_clk_resource *bus_clk_desc;
struct clk *bus_clk;
struct clk_bulk_data *intf_clks;
bool keep_alive;
bool is_on;
};
/**
* struct qcom_icc_qos - Qualcomm specific interconnect QoS parameters
* @areq_prio: node requests priority
* @prio_level: priority level for bus communication
* @limit_commands: activate/deactivate limiter mode during runtime
* @ap_owned: indicates if the node is owned by the AP or by the RPM
* @qos_mode: default qos mode for this node
* @qos_port: qos port number for finding qos registers of this node
* @urg_fwd_en: enable urgent forwarding
*/
struct qcom_icc_qos {
u32 areq_prio;
u32 prio_level;
bool limit_commands;
bool ap_owned;
int qos_mode;
int qos_port;
bool urg_fwd_en;
};
/**
* 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: number of channels at this node (e.g. DDR channels)
* @buswidth: width of the interconnect between a node and the bus (bytes)
* @bus_clk_desc: a pointer to a rpm_clk_resource description of bus clocks
* @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
* @qos: NoC QoS setting parameters
* @ab_coeff: a percentage-based coefficient for compensating the AB calculations
* @ib_coeff: an inverse-percentage-based coefficient for compensating the IB calculations
* @bus_clk_rate: a pointer to an array containing bus clock rates in Hz
*/
struct qcom_icc_node {
unsigned char *name;
u16 id;
const u16 *links;
u16 num_links;
u16 channels;
u16 buswidth;
const struct rpm_clk_resource *bus_clk_desc;
u64 sum_avg[QCOM_SMD_RPM_STATE_NUM];
u64 max_peak[QCOM_SMD_RPM_STATE_NUM];
int mas_rpm_id;
int slv_rpm_id;
struct qcom_icc_qos qos;
u16 ab_coeff;
u16 ib_coeff;
u32 bus_clk_rate[QCOM_SMD_RPM_STATE_NUM];
};
struct qcom_icc_desc {
struct qcom_icc_node * const *nodes;
size_t num_nodes;
const struct rpm_clk_resource *bus_clk_desc;
const char * const *intf_clocks;
size_t num_intf_clocks;
bool keep_alive;
enum qcom_icc_type type;
const struct regmap_config *regmap_cfg;
unsigned int qos_offset;
u16 ab_coeff;
u16 ib_coeff;
};
/* Valid for all bus types */
enum qos_mode {
NOC_QOS_MODE_INVALID = 0,
NOC_QOS_MODE_FIXED,
NOC_QOS_MODE_BYPASS,
};
extern const struct rpm_clk_resource aggre1_clk;
extern const struct rpm_clk_resource aggre2_clk;
extern const struct rpm_clk_resource bimc_clk;
extern const struct rpm_clk_resource bus_0_clk;
extern const struct rpm_clk_resource bus_1_clk;
extern const struct rpm_clk_resource bus_2_clk;
extern const struct rpm_clk_resource mem_1_clk;
extern const struct rpm_clk_resource mmaxi_0_clk;
extern const struct rpm_clk_resource mmaxi_1_clk;
extern const struct rpm_clk_resource qup_clk;
extern const struct rpm_clk_resource aggre1_branch_clk;
extern const struct rpm_clk_resource aggre2_branch_clk;
int qnoc_probe(struct platform_device *pdev);
int qnoc_remove(struct platform_device *pdev);
bool qcom_icc_rpm_smd_available(void);
int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val);
int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int ctx, u32 rate);
#endif
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