82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/*
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* Copyright (c) 2020 Nutanix Inc. All rights reserved.
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*
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* Authors: Thanos Makatos <thanos@nutanix.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Nutanix nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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*/
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#ifndef LIB_VFIO_USER_PCI_CAPS_COMMON_H
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#define LIB_VFIO_USER_PCI_CAPS_COMMON_H
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#include <linux/pci_regs.h>
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct cap_hdr {
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uint8_t id;
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uint8_t next;
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} __attribute__((packed));
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_Static_assert(sizeof(struct cap_hdr) == 0x2, "bad PCI capability header size");
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_Static_assert(offsetof(struct cap_hdr, id) == PCI_CAP_LIST_ID, "bad offset");
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_Static_assert(offsetof(struct cap_hdr, next) == PCI_CAP_LIST_NEXT, "bad offset");
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/*
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* Vendor-specific capability
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*/
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struct vsc {
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struct cap_hdr hdr;
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uint8_t size;
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uint8_t data[];
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} __attribute__ ((packed));
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/*
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* PCI Express extended capability header.
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*/
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struct pcie_ext_cap_hdr {
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uint32_t id:16;
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uint32_t version:4;
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uint32_t next:12;
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} __attribute__((packed));
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/* PCI Express vendor-specific capability header (PCIE 7.19) */
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struct pcie_ext_cap_vsc_hdr {
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struct pcie_ext_cap_hdr hdr;
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uint32_t id:16;
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uint32_t rev:4;
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uint32_t len:12;
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uint8_t data[];
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} __attribute__((packed));
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#ifdef __cplusplus
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}
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#endif
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#endif /* LIB_VFIO_USER_PCI_CAPS_COMMON_H */
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/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */
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