diff options
Diffstat (limited to 'drivers/interconnect/qcom/icc-rpm.h')
| -rw-r--r-- | drivers/interconnect/qcom/icc-rpm.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h new file mode 100644 index 000000000..eed3451af --- /dev/null +++ b/drivers/interconnect/qcom/icc-rpm.h @@ -0,0 +1,155 @@ +/* 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 + * @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; + 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) + * @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 + */ +struct qcom_icc_node { + unsigned char *name; + u16 id; + const u16 *links; + u16 num_links; + u16 channels; + u16 buswidth; + 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; +}; + +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; +}; + +/* 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 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 |