diff options
| author | thorpej <thorpej@NetBSD.org> | 2021-09-15 17:26:06 +0000 |
|---|---|---|
| committer | thorpej <thorpej@NetBSD.org> | 2021-09-15 17:26:06 +0000 |
| commit | b21f1bf046fb218b3f65826b4f540a548f9dd35e (patch) | |
| tree | 53cb8a60836aa71d0973d7f21a57f501d8a21dda /sys/dev | |
| parent | 8d8d5be12aec7de90a9f5ff0f53966b677cdecf8 (diff) | |
Device call interface definition files for the "device" and "pci"
subsystems.
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pci/pci_calls | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/sys/dev/pci/pci_calls b/sys/dev/pci/pci_calls new file mode 100644 index 00000000000..f06e948e1f3 --- /dev/null +++ b/sys/dev/pci/pci_calls @@ -0,0 +1,62 @@ +$NetBSD: pci_calls,v 1.1 2021/09/15 17:26:07 thorpej Exp $ + +/*- + * Copyright (c) 2021 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Jason R. Thorpe. + * + * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ + +/* + * Device calls used by the PCI subsystem. + */ + +subsystem pci; + +#include <dev/pci/pcivar.h> + +/* + * pci-bus-get-child-devhandle + * + * Retrieve the devhandle for the PCI device represented by 'tag' + * in the PCI segment represented by 'pc'. The PCI bus's device_t + * is the one that's passed in the call, and the device whose handle + * is being requested must be a direct child of that bus, otherwise + * behavior is undefined. + * + * Call returns 0 if successful, or an error code upon failure: + * + * ENOTSUP The device handle implementation for the + * PCI bus does not support this device call. + * + * ENODEV The PCI device represented by the pcitag_t + * was not found in a bus-scoped search of the + * platform device tree. + */ +pci-bus-get-child-devhandle { + pci_chipset_tag_t pc; /* IN */ + pcitag_t tag; /* IN */ + devhandle_t devhandle; /* OUT */ +}; |
