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/*
* Intel MIC Platform Software Stack (MPSS)
*
* Copyright(c) 2014 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* Intel SCIF driver.
*/
#ifndef _SCIF_PEER_BUS_H_
#define _SCIF_PEER_BUS_H_
#include <linux/device.h>
#include <linux/mic_common.h>
/*
* Peer devices show up as PCIe devices for the mgmt node but not the cards.
* The mgmt node discovers all the cards on the PCIe bus and informs the other
* cards about their peers. Upon notification of a peer a node adds a peer
* device to the peer bus to maintain symmetry in the way devices are
* discovered across all nodes in the SCIF network.
*/
/**
* scif_peer_dev - representation of a peer SCIF device
* @dev: underlying device
* @dnode - The destination node which this device will communicate with.
*/
struct scif_peer_dev {
struct device dev;
u8 dnode;
};
/**
* scif_peer_driver - operations for a scif_peer I/O driver
* @driver: underlying device driver (populate name and owner).
* @id_table: the ids serviced by this driver.
* @probe: the function to call when a device is found. Returns 0 or -errno.
* @remove: the function to call when a device is removed.
*/
struct scif_peer_driver {
struct device_driver driver;
const struct scif_peer_dev_id *id_table;
int (*probe)(struct scif_peer_dev *dev);
void (*remove)(struct scif_peer_dev *dev);
};
struct scif_dev;
int scif_peer_register_driver(struct scif_peer_driver *driver);
void scif_peer_unregister_driver(struct scif_peer_driver *driver);
struct scif_peer_dev *scif_peer_register_device(struct scif_dev *sdev);
void scif_peer_unregister_device(struct scif_peer_dev *sdev);
int scif_peer_bus_init(void);
void scif_peer_bus_exit(void);
#endif /* _SCIF_PEER_BUS_H */
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