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/*-
* Copyright (c) 2015 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/bus.h>
#include <sys/fcntl.h>
#include <sys/file.h>
#include <sys/filio.h>
#include <sys/rwlock.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/stdarg.h>
#include <machine/pmap.h>
#include <linux/kobject.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/cdev.h>
#include <linux/file.h>
#include <linux/sysfs.h>
#include <linux/mm.h>
#include <linux/io.h>
#include <linux/vmalloc.h>
#include <linux/pci.h>
static device_probe_t linux_pci_probe;
static device_attach_t linux_pci_attach;
static device_detach_t linux_pci_detach;
static device_method_t pci_methods[] = {
DEVMETHOD(device_probe, linux_pci_probe),
DEVMETHOD(device_attach, linux_pci_attach),
DEVMETHOD(device_detach, linux_pci_detach),
DEVMETHOD_END
};
static struct pci_driver *
linux_pci_find(device_t dev, const struct pci_device_id **idp)
{
const struct pci_device_id *id;
struct pci_driver *pdrv;
uint16_t vendor;
uint16_t device;
vendor = pci_get_vendor(dev);
device = pci_get_device(dev);
spin_lock(&pci_lock);
list_for_each_entry(pdrv, &pci_drivers, links) {
for (id = pdrv->id_table; id->vendor != 0; id++) {
if (vendor == id->vendor && device == id->device) {
*idp = id;
spin_unlock(&pci_lock);
return (pdrv);
}
}
}
spin_unlock(&pci_lock);
return (NULL);
}
static int
linux_pci_probe(device_t dev)
{
const struct pci_device_id *id;
struct pci_driver *pdrv;
if ((pdrv = linux_pci_find(dev, &id)) == NULL)
return (ENXIO);
if (device_get_driver(dev) != &pdrv->driver)
return (ENXIO);
device_set_desc(dev, pdrv->name);
return (0);
}
static int
linux_pci_attach(device_t dev)
{
struct resource_list_entry *rle;
struct pci_dev *pdev;
struct pci_driver *pdrv;
const struct pci_device_id *id;
int error;
pdrv = linux_pci_find(dev, &id);
pdev = device_get_softc(dev);
pdev->dev.parent = &linux_root_device;
pdev->dev.bsddev = dev;
INIT_LIST_HEAD(&pdev->dev.irqents);
pdev->device = id->device;
pdev->vendor = id->vendor;
pdev->dev.dma_mask = &pdev->dma_mask;
pdev->pdrv = pdrv;
kobject_init(&pdev->dev.kobj, &linux_dev_ktype);
kobject_set_name(&pdev->dev.kobj, device_get_nameunit(dev));
kobject_add(&pdev->dev.kobj, &linux_root_device.kobj,
kobject_name(&pdev->dev.kobj));
rle = _pci_get_rle(pdev, SYS_RES_IRQ, 0);
if (rle)
pdev->dev.irq = rle->start;
else
pdev->dev.irq = 0;
pdev->irq = pdev->dev.irq;
mtx_unlock(&Giant);
spin_lock(&pci_lock);
list_add(&pdev->links, &pci_devices);
spin_unlock(&pci_lock);
error = pdrv->probe(pdev, id);
mtx_lock(&Giant);
if (error) {
spin_lock(&pci_lock);
list_del(&pdev->links);
spin_unlock(&pci_lock);
put_device(&pdev->dev);
return (-error);
}
return (0);
}
static int
linux_pci_detach(device_t dev)
{
struct pci_dev *pdev;
pdev = device_get_softc(dev);
mtx_unlock(&Giant);
pdev->pdrv->remove(pdev);
mtx_lock(&Giant);
spin_lock(&pci_lock);
list_del(&pdev->links);
spin_unlock(&pci_lock);
put_device(&pdev->dev);
return (0);
}
int
pci_register_driver(struct pci_driver *pdrv)
{
devclass_t bus;
int error = 0;
bus = devclass_find("pci");
spin_lock(&pci_lock);
list_add(&pdrv->links, &pci_drivers);
spin_unlock(&pci_lock);
pdrv->driver.name = pdrv->name;
pdrv->driver.methods = pci_methods;
pdrv->driver.size = sizeof(struct pci_dev);
mtx_lock(&Giant);
if (bus != NULL) {
error = devclass_add_driver(bus, &pdrv->driver, BUS_PASS_DEFAULT,
&pdrv->bsdclass);
}
mtx_unlock(&Giant);
return (-error);
}
void
pci_unregister_driver(struct pci_driver *pdrv)
{
devclass_t bus;
bus = devclass_find("pci");
list_del(&pdrv->links);
mtx_lock(&Giant);
if (bus != NULL)
devclass_delete_driver(bus, &pdrv->driver);
mtx_unlock(&Giant);
}
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