[1b33b9d] | 1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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| 2 | |
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[a31845f7] | 3 | /* PCI Help function, Find a PCI device by BUS|SLOT|FUNCTION |
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| 4 | * |
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[71e8a5c] | 5 | * COPYRIGHT (c) 2010 Cobham Gaisler AB. |
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[a31845f7] | 6 | * |
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[1b33b9d] | 7 | * Redistribution and use in source and binary forms, with or without |
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| 8 | * modification, are permitted provided that the following conditions |
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| 9 | * are met: |
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| 10 | * 1. Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * |
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 26 | * POSSIBILITY OF SUCH DAMAGE. |
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[a31845f7] | 27 | */ |
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| 28 | |
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| 29 | #include <pci.h> |
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| 30 | #include <pci/cfg.h> |
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| 31 | |
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| 32 | static int compare_dev_pcidev(struct pci_dev *dev, void *arg) |
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| 33 | { |
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| 34 | pci_dev_t pcidev = (unsigned)arg; |
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| 35 | |
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| 36 | if (dev->busdevfun == pcidev) |
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| 37 | return (int)dev; |
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| 38 | else |
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| 39 | return 0; |
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| 40 | } |
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| 41 | |
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| 42 | /* Get a Device in PCI device tree located in RAM by PCI BUS|SLOT|FUNCTION */ |
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| 43 | int pci_get_dev(pci_dev_t pcidev, struct pci_dev **ppdev) |
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| 44 | { |
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| 45 | int result; |
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| 46 | |
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| 47 | result = pci_for_each_dev(compare_dev_pcidev, (void *)(unsigned)pcidev); |
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| 48 | if (ppdev) |
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| 49 | *ppdev = (struct pci_dev *)result; |
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| 50 | if (result == 0) |
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| 51 | return -1; |
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| 52 | else |
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| 53 | return 0; |
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| 54 | } |
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