platform:alarmtimer
     qˆÈËƒuçÇ¿É ¹    q/* SPDX-License-Identifier: GPL-2.0 */
/*
 * PCI Endpoint *Function* (EPF) header file
 *
 * Copyright (C) 2017 Texas Instruments
 * Author: Kishon Vijay Abraham I <kishon@ti.com>
 */

#ifndef __LINUX_PCI_EPF_H
#define __LINUX_PCI_EPF_H

#include <linux/configfs.h>
#include <linux/device.h>
#include <linux/mod_devicetable.h>
#include <linux/pci.h>

struct pci_epf;
struct pci_epc_features;
enum pci_epc_interface_type;

enum pci_barno {
	NO_BAR = -1,
	BAR_0,
	BAR_1,
	BAR_2,
	BAR_3,
	BAR_4,
	BAR_5,
};

/**
 * struct pci_epf_header - represents standard configuration header
 * @vendorid: identifies device manufacturer
 * @deviceid: identifies a particular device
 * @revid: specifies a device-specific revision identifier
 * @progif_code: identifies a specific register-level programming interface
 * @subclass_code: identifies more specifically the function of the device
 * @baseclass_code: broadly classifies the type of function the device performs
 * @cache_line_size: specifies the system cacheline size in units of DWORDs
 * @subsys_vendor_id: vendor of the add-in card or subsystem
 * @subsys_id: id specific to vendor
 * @interrupt_pin: interrupt pin the device (or device function) uses
 */
struct pci_epf_header {
	u16	vendorid;
	u16	deviceid;
	u8	revid;
	u8	progif_code;
	u8	subclass_code;
	u8	baseclass_code;
	u8	cache_line_size;
	u16	subsys_vendor_id;
	u16	subsys_id;
	enum pci_interrupt_pin interrupt_pin;
};

/**
 * struct pci_epf_ops - set of function pointers for performing EPF operations
 * @bind: ops to perform when a EPC device has been bound to EPF device
 * @unbind: ops to perform when a binding has been lost between a EPC device
 *	    and EPF device
 * @add_cfs: ops to initialize function specific configfs attributes
 */
struct pci_epf_ops {
	int	(*bind)(struct pci_epf *epf);
	void	(*unbind)(struct pci_epf *epf);
	struct config_group *(*add_cfs)(struct pci_epf *epf,
					struct config_group *group);
};

/**
 * struct pci_epc_event_ops - Callbacks for capturing the EPC events
 * @epc_init: Callback for the EPC initialization complete event
 * @epc_deinit: Callback for the EPC deinitialization event
 * @link_up: Callback for the EPC link up event
 * @link_down: Callback for the EPC link down event
 * @bus_master_enable: Callback for the EPC Bus Master Enable event
 */
struct pci_epc_event_ops {
	int (*epc_init)(struct pci_epf *epf);
	void (*epc_deinit)(struct pci_epf *epf);
	int (*link_up)(struct pci_epf *epf);
	int (*link_down)(struct pci_epf *epf);
	int (*bus_master_enable)(struct pci_epf *epf);
};

/**
 * struct pci_epf_driver - represents the PCI EPF driver
 * @probe: ops to perform when a new EPF device has been bound to the EPF driver
 * @remove: ops to perform when the binding between the EPF device and EPF
 *	    driver is broken
 * @driver: PCI EPF driver
 * @ops: set of function pointers for performing EPF operations
 * @owner: the owner of the module that registers the PCI EPF driver
 * @epf_group: list of configfs group corresponding to the PCI EPF driver
 * @id_table: identifies EPF devices for probing
 */
struct pci_epf_driver {
	int	(*probe)(struct pci_epf *epf,
			 const struct pci_epf_device_id *id);
	void	(*remove)(struct pci_epf *epf);

	struct device_driver	driver;
	const struct pci_epf_ops *ops;
	struct module		*owner;
	struct list_head	epf_group;
	const struct pci_epf_device_id	*id_table;
};

#define to_pci_epf_driver(drv) container_of_const((drv), struct pci_epf_driver, driver)

/**
 * struct pci_epf_bar - represents the BAR of EPF device
 * @phys_addr: physical address that should be mapped to the BAR
 * @addr: virtual address corresponding to the @phys_addr
 * @size: the size of the address space present in BAR
 * @barno: BAR number
 * @flags: flags that are set for the BAR
 */
struct pci_epf_bar {
	dma_addr_t	phys_addr;
	void		*addr;
	size_t		size;
	enum pci_barno	barno;
	int		flags;
};

/**
 * struct pci_epf - represents the PCI EPF device
 * @dev: the PCI EPF device
 * @name: the name of the PCI EPF device
 * @header: represents standard con