/* SPDX-License-Identifier: BSD-2-Clause */
/* PCI Help function, Find a PCI device by BUS|SLOT|FUNCTION
*
* COPYRIGHT (c) 2010 Cobham Gaisler AB.
*
* 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, 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 COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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 <pci.h>
#include <pci/cfg.h>
static int compare_dev_pcidev(struct pci_dev *dev, void *arg)
{
pci_dev_t pcidev = (unsigned)arg;
if (dev->busdevfun == pcidev)
return (int)dev;
else
return 0;
}
/* Get a Device in PCI device tree located in RAM by PCI BUS|SLOT|FUNCTION */
int pci_get_dev(pci_dev_t pcidev, struct pci_dev **ppdev)
{
int result;
result = pci_for_each_dev(compare_dev_pcidev, (void *)(unsigned)pcidev);
if (ppdev)
*ppdev = (struct pci_dev *)result;
if (result == 0)
return -1;
else
return 0;
}
