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PECI is an interface that may be used by different types of devices. Add a peci-cpu driver compatible with Intel processors. The driver is responsible for handling auxiliary devices that can subsequently be used by other drivers (e.g. hwmons). Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Iwona Winiarska <iwona.winiarska@intel.com> Link: https://lore.kernel.org/r/20220208153639.255278-10-iwona.winiarska@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
137 lines
5.0 KiB
C
137 lines
5.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright (c) 2018-2021 Intel Corporation */
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#ifndef __PECI_INTERNAL_H
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#define __PECI_INTERNAL_H
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#include <linux/device.h>
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#include <linux/types.h>
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struct peci_controller;
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struct attribute_group;
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struct peci_device;
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struct peci_request;
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/* PECI CPU address range 0x30-0x37 */
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#define PECI_BASE_ADDR 0x30
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#define PECI_DEVICE_NUM_MAX 8
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struct peci_request *peci_request_alloc(struct peci_device *device, u8 tx_len, u8 rx_len);
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void peci_request_free(struct peci_request *req);
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int peci_request_status(struct peci_request *req);
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u64 peci_request_dib_read(struct peci_request *req);
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s16 peci_request_temp_read(struct peci_request *req);
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u8 peci_request_data_readb(struct peci_request *req);
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u16 peci_request_data_readw(struct peci_request *req);
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u32 peci_request_data_readl(struct peci_request *req);
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u64 peci_request_data_readq(struct peci_request *req);
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struct peci_request *peci_xfer_get_dib(struct peci_device *device);
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struct peci_request *peci_xfer_get_temp(struct peci_device *device);
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struct peci_request *peci_xfer_pkg_cfg_readb(struct peci_device *device, u8 index, u16 param);
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struct peci_request *peci_xfer_pkg_cfg_readw(struct peci_device *device, u8 index, u16 param);
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struct peci_request *peci_xfer_pkg_cfg_readl(struct peci_device *device, u8 index, u16 param);
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struct peci_request *peci_xfer_pkg_cfg_readq(struct peci_device *device, u8 index, u16 param);
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struct peci_request *peci_xfer_pci_cfg_local_readb(struct peci_device *device,
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u8 bus, u8 dev, u8 func, u16 reg);
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struct peci_request *peci_xfer_pci_cfg_local_readw(struct peci_device *device,
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u8 bus, u8 dev, u8 func, u16 reg);
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struct peci_request *peci_xfer_pci_cfg_local_readl(struct peci_device *device,
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u8 bus, u8 dev, u8 func, u16 reg);
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struct peci_request *peci_xfer_ep_pci_cfg_local_readb(struct peci_device *device, u8 seg,
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u8 bus, u8 dev, u8 func, u16 reg);
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struct peci_request *peci_xfer_ep_pci_cfg_local_readw(struct peci_device *device, u8 seg,
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u8 bus, u8 dev, u8 func, u16 reg);
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struct peci_request *peci_xfer_ep_pci_cfg_local_readl(struct peci_device *device, u8 seg,
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u8 bus, u8 dev, u8 func, u16 reg);
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struct peci_request *peci_xfer_ep_pci_cfg_readb(struct peci_device *device, u8 seg,
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u8 bus, u8 dev, u8 func, u16 reg);
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struct peci_request *peci_xfer_ep_pci_cfg_readw(struct peci_device *device, u8 seg,
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u8 bus, u8 dev, u8 func, u16 reg);
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struct peci_request *peci_xfer_ep_pci_cfg_readl(struct peci_device *device, u8 seg,
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u8 bus, u8 dev, u8 func, u16 reg);
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struct peci_request *peci_xfer_ep_mmio32_readl(struct peci_device *device, u8 bar, u8 seg,
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u8 bus, u8 dev, u8 func, u64 offset);
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struct peci_request *peci_xfer_ep_mmio64_readl(struct peci_device *device, u8 bar, u8 seg,
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u8 bus, u8 dev, u8 func, u64 offset);
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/**
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* struct peci_device_id - PECI device data to match
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* @data: pointer to driver private data specific to device
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* @family: device family
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* @model: device model
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*/
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struct peci_device_id {
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const void *data;
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u16 family;
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u8 model;
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};
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extern struct device_type peci_device_type;
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extern const struct attribute_group *peci_device_groups[];
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int peci_device_create(struct peci_controller *controller, u8 addr);
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void peci_device_destroy(struct peci_device *device);
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extern struct bus_type peci_bus_type;
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extern const struct attribute_group *peci_bus_groups[];
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/**
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* struct peci_driver - PECI driver
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* @driver: inherit device driver
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* @probe: probe callback
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* @remove: remove callback
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* @id_table: PECI device match table to decide which device to bind
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*/
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struct peci_driver {
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struct device_driver driver;
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int (*probe)(struct peci_device *device, const struct peci_device_id *id);
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void (*remove)(struct peci_device *device);
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const struct peci_device_id *id_table;
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};
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static inline struct peci_driver *to_peci_driver(struct device_driver *d)
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{
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return container_of(d, struct peci_driver, driver);
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}
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int __peci_driver_register(struct peci_driver *driver, struct module *owner,
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const char *mod_name);
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/**
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* peci_driver_register() - register PECI driver
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* @driver: the driver to be registered
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*
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* PECI drivers that don't need to do anything special in module init should
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* use the convenience "module_peci_driver" macro instead
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*
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* Return: zero on success, else a negative error code.
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*/
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#define peci_driver_register(driver) \
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__peci_driver_register(driver, THIS_MODULE, KBUILD_MODNAME)
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void peci_driver_unregister(struct peci_driver *driver);
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/**
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* module_peci_driver() - helper macro for registering a modular PECI driver
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* @__peci_driver: peci_driver struct
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*
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* Helper macro for PECI drivers which do not do anything special in module
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* init/exit. This eliminates a lot of boilerplate. Each module may only
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* use this macro once, and calling it replaces module_init() and module_exit()
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*/
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#define module_peci_driver(__peci_driver) \
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module_driver(__peci_driver, peci_driver_register, peci_driver_unregister)
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extern struct device_type peci_controller_type;
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int peci_controller_scan_devices(struct peci_controller *controller);
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#endif /* __PECI_INTERNAL_H */
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