forked from Imagelibrary/rtems
55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/* 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;
|
|
}
|