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