240 lines
7.5 KiB
C
240 lines
7.5 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
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/*
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* Copyright (C) 2017-2020 Mellanox Technologies Ltd.
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*/
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#ifndef __LINUX_PLATFORM_DATA_MLXREG_H
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#define __LINUX_PLATFORM_DATA_MLXREG_H
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#define MLXREG_CORE_LABEL_MAX_SIZE 32
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#define MLXREG_CORE_WD_FEATURE_NOWAYOUT BIT(0)
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#define MLXREG_CORE_WD_FEATURE_START_AT_BOOT BIT(1)
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/**
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* enum mlxreg_wdt_type - type of HW watchdog
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*
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* TYPE1 HW watchdog implementation exist in old systems.
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* All new systems have TYPE2 HW watchdog.
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* TYPE3 HW watchdog can exist on all systems with new CPLD.
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* TYPE3 is selected by WD capability bit.
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*/
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enum mlxreg_wdt_type {
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MLX_WDT_TYPE1,
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MLX_WDT_TYPE2,
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MLX_WDT_TYPE3,
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};
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/**
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* enum mlxreg_hotplug_kind - kind of hotplug entry
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*
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* @MLXREG_HOTPLUG_DEVICE_NA: do not care;
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* @MLXREG_HOTPLUG_LC_PRESENT: entry for line card presence in/out events;
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* @MLXREG_HOTPLUG_LC_VERIFIED: entry for line card verification status events
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* coming after line card security signature validation;
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* @MLXREG_HOTPLUG_LC_POWERED: entry for line card power on/off events;
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* @MLXREG_HOTPLUG_LC_SYNCED: entry for line card synchronization events, coming
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* after hardware-firmware synchronization handshake;
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* @MLXREG_HOTPLUG_LC_READY: entry for line card ready events, indicating line card
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PHYs ready / unready state;
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* @MLXREG_HOTPLUG_LC_ACTIVE: entry for line card active events, indicating firmware
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* availability / unavailability for the ports on line card;
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* @MLXREG_HOTPLUG_LC_THERMAL: entry for line card thermal shutdown events, positive
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* event indicates that system should power off the line
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* card for which this event has been received;
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*/
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enum mlxreg_hotplug_kind {
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MLXREG_HOTPLUG_DEVICE_NA = 0,
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MLXREG_HOTPLUG_LC_PRESENT = 1,
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MLXREG_HOTPLUG_LC_VERIFIED = 2,
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MLXREG_HOTPLUG_LC_POWERED = 3,
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MLXREG_HOTPLUG_LC_SYNCED = 4,
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MLXREG_HOTPLUG_LC_READY = 5,
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MLXREG_HOTPLUG_LC_ACTIVE = 6,
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MLXREG_HOTPLUG_LC_THERMAL = 7,
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};
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/**
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* enum mlxreg_hotplug_device_action - hotplug device action required for
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* driver's connectivity
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*
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* @MLXREG_HOTPLUG_DEVICE_DEFAULT_ACTION: probe device for 'on' event, remove
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* for 'off' event;
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* @MLXREG_HOTPLUG_DEVICE_PLATFORM_ACTION: probe platform device for 'on'
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* event, remove for 'off' event;
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* @MLXREG_HOTPLUG_DEVICE_NO_ACTION: no connectivity action is required;
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*/
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enum mlxreg_hotplug_device_action {
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MLXREG_HOTPLUG_DEVICE_DEFAULT_ACTION = 0,
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MLXREG_HOTPLUG_DEVICE_PLATFORM_ACTION = 1,
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MLXREG_HOTPLUG_DEVICE_NO_ACTION = 2,
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};
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/**
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* struct mlxreg_core_hotplug_notifier - hotplug notifier block:
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*
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* @identity: notifier identity name;
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* @handle: user handle to be passed by user handler function;
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* @user_handler: user handler function associated with the event;
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*/
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struct mlxreg_core_hotplug_notifier {
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char identity[MLXREG_CORE_LABEL_MAX_SIZE];
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void *handle;
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int (*user_handler)(void *handle, enum mlxreg_hotplug_kind kind, u8 action);
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};
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/**
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* struct mlxreg_hotplug_device - I2C device data:
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*
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* @adapter: I2C device adapter;
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* @client: I2C device client;
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* @brdinfo: device board information;
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* @nr: I2C device adapter number, to which device is to be attached;
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* @pdev: platform device, if device is instantiated as a platform device;
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* @action: action to be performed upon event receiving;
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* @handle: user handle to be passed by user handler function;
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* @user_handler: user handler function associated with the event;
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* @notifier: pointer to event notifier block;
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*
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* Structure represents I2C hotplug device static data (board topology) and
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* dynamic data (related kernel objects handles).
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*/
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struct mlxreg_hotplug_device {
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struct i2c_adapter *adapter;
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struct i2c_client *client;
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struct i2c_board_info *brdinfo;
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int nr;
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struct platform_device *pdev;
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enum mlxreg_hotplug_device_action action;
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void *handle;
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int (*user_handler)(void *handle, enum mlxreg_hotplug_kind kind, u8 action);
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struct mlxreg_core_hotplug_notifier *notifier;
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};
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/**
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* struct mlxreg_core_data - attributes control data:
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*
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* @label: attribute label;
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* @reg: attribute register;
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* @mask: attribute access mask;
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* @bit: attribute effective bit;
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* @capability: attribute capability register;
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* @reg_prsnt: attribute presence register;
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* @reg_sync: attribute synch register;
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* @reg_pwr: attribute power register;
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* @reg_ena: attribute enable register;
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* @mode: access mode;
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* @np - pointer to node platform associated with attribute;
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* @hpdev - hotplug device data;
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* @notifier: pointer to event notifier block;
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* @health_cntr: dynamic device health indication counter;
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* @attached: true if device has been attached after good health indication;
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* @regnum: number of registers occupied by multi-register attribute;
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* @slot: slot number, at which device is located;
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* @secured: if set indicates that entry access is secured;
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*/
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struct mlxreg_core_data {
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char label[MLXREG_CORE_LABEL_MAX_SIZE];
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u32 reg;
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u32 mask;
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u32 bit;
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u32 capability;
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u32 reg_prsnt;
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u32 reg_sync;
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u32 reg_pwr;
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u32 reg_ena;
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umode_t mode;
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struct device_node *np;
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struct mlxreg_hotplug_device hpdev;
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struct mlxreg_core_hotplug_notifier *notifier;
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u32 health_cntr;
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bool attached;
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u8 regnum;
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u8 slot;
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u8 secured;
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};
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/**
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* struct mlxreg_core_item - same type components controlled by the driver:
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*
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* @data: component data;
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* @kind: kind of hotplug attribute;
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* @aggr_mask: group aggregation mask;
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* @reg: group interrupt status register;
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* @mask: group interrupt mask;
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* @capability: group capability register;
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* @cache: last status value for elements fro the same group;
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* @count: number of available elements in the group;
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* @ind: element's index inside the group;
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* @inversed: if 0: 0 for signal status is OK, if 1 - 1 is OK;
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* @health: true if device has health indication, false in other case;
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*/
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struct mlxreg_core_item {
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struct mlxreg_core_data *data;
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enum mlxreg_hotplug_kind kind;
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u32 aggr_mask;
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u32 reg;
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u32 mask;
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u32 capability;
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u32 cache;
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u8 count;
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u8 ind;
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u8 inversed;
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u8 health;
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};
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/**
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* struct mlxreg_core_platform_data - platform data:
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*
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* @data: instance private data;
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* @regmap: register map of parent device;
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* @counter: number of instances;
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* @features: supported features of device;
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* @version: implementation version;
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* @identity: device identity name;
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* @capability: device capability register;
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*/
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struct mlxreg_core_platform_data {
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struct mlxreg_core_data *data;
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void *regmap;
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int counter;
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u32 features;
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u32 version;
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char identity[MLXREG_CORE_LABEL_MAX_SIZE];
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u32 capability;
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};
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/**
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* struct mlxreg_core_hotplug_platform_data - hotplug platform data:
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*
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* @items: same type components with the hotplug capability;
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* @irq: platform interrupt number;
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* @regmap: register map of parent device;
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* @counter: number of the components with the hotplug capability;
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* @cell: location of top aggregation interrupt register;
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* @mask: top aggregation interrupt common mask;
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* @cell_low: location of low aggregation interrupt register;
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* @mask_low: low aggregation interrupt common mask;
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* @deferred_nr: I2C adapter number must be exist prior probing execution;
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* @shift_nr: I2C adapter numbers must be incremented by this value;
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* @addr: mapped resource address;
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* @handle: handle to be passed by callback;
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* @completion_notify: callback to notify when platform driver probing is done;
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*/
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struct mlxreg_core_hotplug_platform_data {
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struct mlxreg_core_item *items;
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int irq;
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void *regmap;
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int counter;
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u32 cell;
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u32 mask;
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u32 cell_low;
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u32 mask_low;
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int deferred_nr;
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int shift_nr;
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void __iomem *addr;
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void *handle;
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int (*completion_notify)(void *handle, int id);
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};
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#endif /* __LINUX_PLATFORM_DATA_MLXREG_H */
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