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/*
* Copyright (c) 2019 Nutanix Inc. All rights reserved.
*
* Authors: Thanos Makatos <thanos@nutanix.com>
* Swapnil Ingle <swapnil.ingle@nutanix.com>
* Felipe Franciosi <felipe@nutanix.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Nutanix nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* 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 <COPYRIGHT HOLDER> 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.
*
*/
#ifndef LIB_VFIO_USER_PCI_CAPS_MSI_H
#define LIB_VFIO_USER_PCI_CAPS_MSI_H
#include "common.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Message Control for MSI */
struct mc {
unsigned int msie:1; /* RW */
unsigned int mmc:3; /* RO */
unsigned int mme:3; /* RW */
unsigned int c64:1; /* RO */
unsigned int pvm:1; /* RO */
unsigned int res1:7; /* not implemented, extended message data control */
} __attribute__ ((packed));
_Static_assert(sizeof(struct mc) == 0x2, "bad MC size");
/* Message Address for MSI */
struct ma {
unsigned int res1:2; /* read must return 0, write has no effect */
unsigned int addr:30; /* RW */
} __attribute__ ((packed));
_Static_assert(sizeof(struct ma) == 0x4, "bad MA size");
#define VFIO_USER_PCI_CAP_MSI_SIZEOF (0x18)
struct msicap {
struct cap_hdr hdr;
struct mc mc;
struct ma ma;
uint32_t mua; /* RW */
uint16_t md; /* RW */
uint16_t padding; /* not implemented, extended message data */
uint32_t mmask; /* RW */
uint32_t mpend; /* RO */
} __attribute__ ((packed));
_Static_assert(sizeof(struct msicap) == VFIO_USER_PCI_CAP_MSI_SIZEOF,
"bad MSICAP size");
_Static_assert(offsetof(struct msicap, hdr) == 0, "bad offset");
#ifdef __cplusplus
}
#endif
#endif /* VFU_CAP_MSI_H */
/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */
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