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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.
*/
#include "scif_main.h"
#include "../bus/scif_bus.h"
#include "scif_peer_bus.h"
static inline struct scif_peer_dev *
dev_to_scif_peer(struct device *dev)
{
return container_of(dev, struct scif_peer_dev, dev);
}
static inline struct scif_peer_driver *
drv_to_scif_peer(struct device_driver *drv)
{
return container_of(drv, struct scif_peer_driver, driver);
}
static int scif_peer_dev_match(struct device *dv, struct device_driver *dr)
{
return !strncmp(dev_name(dv), dr->name, 4);
}
static int scif_peer_dev_probe(struct device *d)
{
struct scif_peer_dev *dev = dev_to_scif_peer(d);
struct scif_peer_driver *drv = drv_to_scif_peer(dev->dev.driver);
return drv->probe(dev);
}
static int scif_peer_dev_remove(struct device *d)
{
struct scif_peer_dev *dev = dev_to_scif_peer(d);
struct scif_peer_driver *drv = drv_to_scif_peer(dev->dev.driver);
drv->remove(dev);
return 0;
}
static struct bus_type scif_peer_bus = {
.name = "scif_peer_bus",
.match = scif_peer_dev_match,
.probe = scif_peer_dev_probe,
.remove = scif_peer_dev_remove,
};
int scif_peer_register_driver(struct scif_peer_driver *driver)
{
driver->driver.bus = &scif_peer_bus;
return driver_register(&driver->driver);
}
void scif_peer_unregister_driver(struct scif_peer_driver *driver)
{
driver_unregister(&driver->driver);
}
static void scif_peer_release_dev(struct device *d)
{
struct scif_peer_dev *sdev = dev_to_scif_peer(d);
struct scif_dev *scifdev = &scif_dev[sdev->dnode];
scif_cleanup_scifdev(scifdev);
kfree(sdev);
}
struct scif_peer_dev *
scif_peer_register_device(struct scif_dev *scifdev)
{
int ret;
struct scif_peer_dev *spdev;
spdev = kzalloc(sizeof(*spdev), GFP_KERNEL);
if (!spdev)
return ERR_PTR(-ENOMEM);
spdev->dev.parent = scifdev->sdev->dev.parent;
spdev->dev.release = scif_peer_release_dev;
spdev->dnode = scifdev->node;
spdev->dev.bus = &scif_peer_bus;
dev_set_name(&spdev->dev, "scif_peer-dev%u", spdev->dnode);
/*
* device_register() causes the bus infrastructure to look for a
* matching driver.
*/
ret = device_register(&spdev->dev);
if (ret)
goto free_spdev;
return spdev;
free_spdev:
kfree(spdev);
return ERR_PTR(ret);
}
void scif_peer_unregister_device(struct scif_peer_dev *sdev)
{
device_unregister(&sdev->dev);
}
int scif_peer_bus_init(void)
{
return bus_register(&scif_peer_bus);
}
void scif_peer_bus_exit(void)
{
bus_unregister(&scif_peer_bus);
}
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