FM / linux

/usr/include/linux

Name	Size	Mode	Actions
android/	-	0755	rm
byteorder/	-	0755	rm
caif/	-	0755	rm
can/	-	0755	rm
cifs/	-	0755	rm
dvb/	-	0755	rm
genwqe/	-	0755	rm
hdlc/	-	0755	rm
hsi/	-	0755	rm
iio/	-	0755	rm
isdn/	-	0755	rm
misc/	-	0755	rm
mmc/	-	0755	rm
netfilter/	-	0755	rm
netfilter_arp/	-	0755	rm
netfilter_bridge/	-	0755	rm
netfilter_ipv4/	-	0755	rm
netfilter_ipv6/	-	0755	rm
nfsd/	-	0755	rm
raid/	-	0755	rm
sched/	-	0755	rm
spi/	-	0755	rm
sunrpc/	-	0755	rm
surface_aggregator/	-	0755	rm
tc_act/	-	0755	rm
tc_ematch/	-	0755	rm
usb/	-	0755	rm
a.out.h	6892	0644	edit dl rm
acct.h	3913	0644	edit dl rm
acrn.h	16686	0644	edit dl rm
adb.h	1140	0644	edit dl rm
adfs_fs.h	993	0644	edit dl rm
affs_hardblocks.h	1578	0644	edit dl rm
agpgart.h	3940	0644	edit dl rm
aio_abi.h	3398	0644	edit dl rm
am437x-vpfe.h	3681	0644	edit dl rm
apm_bios.h	3683	0644	edit dl rm
arcfb.h	213	0644	edit dl rm
arm_sdei.h	2751	0644	edit dl rm
aspeed-lpc-ctrl.h	1780	0644	edit dl rm
aspeed-p2a-ctrl.h	1906	0644	edit dl rm
atalk.h	1023	0644	edit dl rm
atm.h	7888	0644	edit dl rm
atmapi.h	952	0644	edit dl rm
atmarp.h	1296	0644	edit dl rm
atmbr2684.h	3271	0644	edit dl rm
atmclip.h	576	0644	edit dl rm
atmdev.h	7677	0644	edit dl rm
atmioc.h	1647	0644	edit dl rm
atmlec.h	2381	0644	edit dl rm
atmmpc.h	4226	0644	edit dl rm
atmppp.h	639	0644	edit dl rm
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atmsvc.h	1853	0644	edit dl rm
atm_eni.h	648	0644	edit dl rm
atm_he.h	406	0644	edit dl rm
atm_idt77105.h	955	0644	edit dl rm
atm_nicstar.h	1278	0644	edit dl rm
atm_tcp.h	1622	0644	edit dl rm
atm_zatm.h	1540	0644	edit dl rm
audit.h	21570	0644	edit dl rm
auto_dev-ioctl.h	4986	0644	edit dl rm
auto_fs.h	6428	0644	edit dl rm
auto_fs4.h	451	0644	edit dl rm
auxvec.h	1597	0644	edit dl rm
ax25.h	2824	0644	edit dl rm
batadv_packet.h	20345	0644	edit dl rm
batman_adv.h	16887	0644	edit dl rm
baycom.h	883	0644	edit dl rm
bcm933xx_hcs.h	419	0644	edit dl rm
bfs_fs.h	1905	0644	edit dl rm
binfmts.h	776	0644	edit dl rm
bits.h	447	0644	edit dl rm
blkdev.h	359	0644	edit dl rm
blkpg.h	904	0644	edit dl rm
blktrace_api.h	4701	0644	edit dl rm
blkzoned.h	6493	0644	edit dl rm
bpf.h	278673	0644	edit dl rm
bpfilter.h	465	0644	edit dl rm
bpf_common.h	1367	0644	edit dl rm
bpf_perf_event.h	529	0644	edit dl rm
bpqether.h	981	0644	edit dl rm
bsg.h	2494	0644	edit dl rm
bt-bmc.h	572	0644	edit dl rm
btf.h	5591	0644	edit dl rm
btrfs.h	30570	0644	edit dl rm
btrfs_tree.h	25829	0644	edit dl rm
cachefiles.h	1650	0644	edit dl rm
can.h	11496	0644	edit dl rm
capability.h	13491	0644	edit dl rm
capi.h	3124	0644	edit dl rm
cciss_defs.h	3281	0644	edit dl rm
cciss_ioctl.h	2761	0644	edit dl rm
ccs.h	767	0644	edit dl rm
cdrom.h	29561	0644	edit dl rm
cec-funcs.h	54419	0644	edit dl rm
cec.h	41437	0644	edit dl rm
cfm_bridge.h	1456	0644	edit dl rm
cgroupstats.h	2219	0644	edit dl rm
chio.h	5282	0644	edit dl rm
close_range.h	377	0644	edit dl rm
cm4000_cs.h	1806	0644	edit dl rm
cn_proc.h	4149	0644	edit dl rm
coda.h	18216	0644	edit dl rm
coff.h	12549	0644	edit dl rm
connector.h	2253	0644	edit dl rm
const.h	987	0644	edit dl rm
coresight-stm.h	747	0644	edit dl rm
cramfs_fs.h	3555	0644	edit dl rm
cryptouser.h	5321	0644	edit dl rm
cuda.h	905	0644	edit dl rm
cxl_mem.h	7915	0644	edit dl rm
cycx_cfm.h	2990	0644	edit dl rm
dcbnl.h	25292	0644	edit dl rm
dccp.h	6436	0644	edit dl rm
devlink.h	23823	0644	edit dl rm
dlm.h	2553	0644	edit dl rm
dlmconstants.h	5080	0644	edit dl rm
dlm_device.h	2543	0644	edit dl rm
dlm_netlink.h	1159	0644	edit dl rm
dlm_plock.h	894	0644	edit dl rm
dm-ioctl.h	11753	0644	edit dl rm
dm-log-userspace.h	15191	0644	edit dl rm
dma-buf.h	5247	0644	edit dl rm
dma-heap.h	1394	0644	edit dl rm
dn.h	4642	0644	edit dl rm
dns_resolver.h	3949	0644	edit dl rm
dpll.h	9669	0644	edit dl rm
dqblk_xfs.h	9388	0644	edit dl rm
edd.h	5604	0644	edit dl rm
efs_fs_sb.h	2227	0644	edit dl rm
elf-em.h	2627	0644	edit dl rm
elf-fdpic.h	1124	0644	edit dl rm
elf.h	15328	0644	edit dl rm
errno.h	23	0644	edit dl rm
errqueue.h	1983	0644	edit dl rm
erspan.h	1059	0644	edit dl rm
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ethtool_netlink.h	6314	0644	edit dl rm
ethtool_netlink_generated.h	19626	0644	edit dl rm
eventfd.h	264	0644	edit dl rm
eventpoll.h	2913	0644	edit dl rm
f2fs.h	3301	0644	edit dl rm
fadvise.h	842	0644	edit dl rm
falloc.h	3643	0644	edit dl rm
fanotify.h	7886	0644	edit dl rm
fb.h	16477	0644	edit dl rm
fcntl.h	4319	0644	edit dl rm
fd.h	12117	0644	edit dl rm
fdreg.h	5364	0644	edit dl rm
fib_rules.h	2036	0644	edit dl rm
fiemap.h	2775	0644	edit dl rm
filter.h	2216	0644	edit dl rm
firewire-cdev.h	44240	0644	edit dl rm
firewire-constants.h	3231	0644	edit dl rm
fou.h	819	0644	edit dl rm
fpga-dfl.h	8728	0644	edit dl rm
fs.h	13547	0644	edit dl rm
fscrypt.h	6565	0644	edit dl rm
fsi.h	2255	0644	edit dl rm
fsl_hypervisor.h	7301	0644	edit dl rm
fsl_mc.h	734	0644	edit dl rm
fsmap.h	4393	0644	edit dl rm
fsverity.h	3185	0644	edit dl rm
fuse.h	25968	0644	edit dl rm
futex.h	6377	0644	edit dl rm
gameport.h	897	0644	edit dl rm
genetlink.h	2238	0644	edit dl rm
gen_stats.h	1526	0644	edit dl rm
gfs2_ondisk.h	14773	0644	edit dl rm
gpio.h	19922	0644	edit dl rm
gsmmux.h	4509	0644	edit dl rm
gtp.h	734	0644	edit dl rm
handshake.h	1646	0644	edit dl rm
hash_info.h	971	0644	edit dl rm
hdlc.h	637	0644	edit dl rm
hdlcdrv.h	2908	0644	edit dl rm
hdreg.h	22703	0644	edit dl rm
hid.h	2086	0644	edit dl rm
hiddev.h	6345	0644	edit dl rm
hidraw.h	1993	0644	edit dl rm
hpet.h	743	0644	edit dl rm
hsr_netlink.h	1101	0644	edit dl rm
hw_breakpoint.h	742	0644	edit dl rm
hyperv.h	11152	0644	edit dl rm
i2c-dev.h	1875	0644	edit dl rm
i2c.h	6890	0644	edit dl rm
i2o-dev.h	11555	0644	edit dl rm
i8k.h	1528	0644	edit dl rm
icmp.h	4785	0644	edit dl rm
icmpv6.h	4300	0644	edit dl rm
idxd.h	9328	0644	edit dl rm
if.h	10925	0644	edit dl rm
ife.h	351	0644	edit dl rm
if_addr.h	1886	0644	edit dl rm
if_addrlabel.h	721	0644	edit dl rm
if_alg.h	1566	0644	edit dl rm
if_arcnet.h	3717	0644	edit dl rm
if_arp.h	6565	0644	edit dl rm
if_bonding.h	5145	0644	edit dl rm
if_bridge.h	20755	0644	edit dl rm
if_cablemodem.h	986	0644	edit dl rm
if_eql.h	1349	0644	edit dl rm
if_ether.h	8410	0644	edit dl rm
if_fc.h	1738	0644	edit dl rm
if_fddi.h	4369	0644	edit dl rm
if_hippi.h	4235	0644	edit dl rm
if_infiniband.h	1245	0644	edit dl rm
if_link.h	54244	0644	edit dl rm
if_ltalk.h	210	0644	edit dl rm
if_macsec.h	6503	0644	edit dl rm
if_packet.h	8183	0644	edit dl rm
if_phonet.h	424	0644	edit dl rm
if_plip.h	660	0644	edit dl rm
if_ppp.h	29	0644	edit dl rm
if_pppol2tp.h	3303	0644	edit dl rm
if_pppox.h	4879	0644	edit dl rm
if_slip.h	872	0644	edit dl rm
if_team.h	2600	0644	edit dl rm
if_tun.h	4098	0644	edit dl rm
if_tunnel.h	5488	0644	edit dl rm
if_vlan.h	1831	0644	edit dl rm
if_x25.h	881	0644	edit dl rm
if_xdp.h	5414	0644	edit dl rm
igmp.h	3064	0644	edit dl rm
ila.h	1246	0644	edit dl rm
in.h	10486	0644	edit dl rm
in6.h	7537	0644	edit dl rm
inet_diag.h	5017	0644	edit dl rm
inotify.h	3292	0644	edit dl rm
input-event-codes.h	30271	0644	edit dl rm
input.h	16240	0644	edit dl rm
in_route.h	936	0644	edit dl rm
ioctl.h	163	0644	edit dl rm
iommufd.h	48922	0644	edit dl rm
ioprio.h	4175	0644	edit dl rm
io_uring.h	25063	0644	edit dl rm
ip.h	4813	0644	edit dl rm
ip6_tunnel.h	1953	0644	edit dl rm
ipc.h	2101	0644	edit dl rm
ipmi.h	15442	0644	edit dl rm
ipmi_bmc.h	488	0644	edit dl rm
ipmi_msgdefs.h	3430	0644	edit dl rm
ipmi_ssif_bmc.h	441	0644	edit dl rm
ipsec.h	947	0644	edit dl rm
ipv6.h	4169	0644	edit dl rm
ipv6_route.h	1908	0644	edit dl rm
ipx.h	2347	0644	edit dl rm
ip_vs.h	14135	0644	edit dl rm
irqnr.h	104	0644	edit dl rm
iso_fs.h	6485	0644	edit dl rm
isst_if.h	16179	0644	edit dl rm
ivtv.h	3022	0644	edit dl rm
ivtvfb.h	1207	0644	edit dl rm
jffs2.h	6815	0644	edit dl rm
joystick.h	3434	0644	edit dl rm
kcm.h	822	0644	edit dl rm
kcmp.h	522	0644	edit dl rm
kcov.h	1963	0644	edit dl rm
kd.h	6452	0644	edit dl rm
kdev_t.h	383	0644	edit dl rm
kernel-page-flags.h	900	0644	edit dl rm
kernel.h	194	0644	edit dl rm
kernelcapi.h	1019	0644	edit dl rm
kexec.h	2097	0644	edit dl rm
keyboard.h	13459	0644	edit dl rm
keyctl.h	5996	0644	edit dl rm
kfd_ioctl.h	58572	0644	edit dl rm
kfd_sysfs.h	5379	0644	edit dl rm
kvm.h	48372	0644	edit dl rm
kvm_para.h	1001	0644	edit dl rm
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limits.h	937	0644	edit dl rm
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loadpin.h	834	0644	edit dl rm
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lp.h	4190	0644	edit dl rm
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lwtunnel.h	2367	0644	edit dl rm
magic.h	3870	0644	edit dl rm
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mdio.h	24392	0644	edit dl rm
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media.h	12754	0644	edit dl rm
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mempolicy.h	2568	0644	edit dl rm
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mount.h	5019	0644	edit dl rm
mpls.h	2302	0644	edit dl rm
mpls_iptunnel.h	761	0644	edit dl rm
mptcp.h	3763	0644	edit dl rm
mptcp_pm.h	4407	0644	edit dl rm
mqueue.h	2201	0644	edit dl rm
mroute.h	5922	0644	edit dl rm
mroute6.h	4930	0644	edit dl rm
mrp_bridge.h	1708	0644	edit dl rm
msdos_fs.h	6731	0644	edit dl rm
msg.h	3386	0644	edit dl rm
mshv.h	8122	0644	edit dl rm
mtio.h	8175	0644	edit dl rm
nbd-netlink.h	2408	0644	edit dl rm
nbd.h	3862	0644	edit dl rm
ncsi.h	4828	0644	edit dl rm
ndctl.h	6829	0644	edit dl rm
neighbour.h	6054	0644	edit dl rm
net.h	2085	0644	edit dl rm
netconf.h	614	0644	edit dl rm
netdev.h	5786	0644	edit dl rm
netdevice.h	2253	0644	edit dl rm
netfilter.h	1731	0644	edit dl rm
netfilter_arp.h	445	0644	edit dl rm
netfilter_bridge.h	1168	0644	edit dl rm
netfilter_decnet.h	1758	0644	edit dl rm
netfilter_ipv4.h	1488	0644	edit dl rm
netfilter_ipv6.h	1383	0644	edit dl rm
netlink.h	12381	0644	edit dl rm
netlink_diag.h	1524	0644	edit dl rm
netrom.h	807	0644	edit dl rm
net_dropmon.h	2922	0644	edit dl rm
net_namespace.h	715	0644	edit dl rm
net_shaper.h	2583	0644	edit dl rm
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nfsacl.h	718	0644	edit dl rm
nfsd_netlink.h	1995	0644	edit dl rm
nfs_fs.h	1654	0644	edit dl rm
nfs_idmap.h	2243	0644	edit dl rm
nfs_mount.h	2142	0644	edit dl rm
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nilfs2_ondisk.h	18085	0644	edit dl rm
nitro_enclaves.h	13161	0644	edit dl rm
nl80211.h	363948	0644	edit dl rm
nsfs.h	639	0644	edit dl rm
nubus.h	8191	0644	edit dl rm
nvme_ioctl.h	2490	0644	edit dl rm
nvram.h	532	0644	edit dl rm
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omapfb.h	5918	0644	edit dl rm
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openat2.h	1450	0644	edit dl rm
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packet_diag.h	1672	0644	edit dl rm
param.h	141	0644	edit dl rm
parport.h	3644	0644	edit dl rm
patchkey.h	892	0644	edit dl rm
pci.h	1380	0644	edit dl rm
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pci_regs.h	63374	0644	edit dl rm
perf_event.h	43709	0644	edit dl rm
personality.h	2097	0644	edit dl rm
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phantom.h	1654	0644	edit dl rm
phonet.h	4677	0644	edit dl rm
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serial.h	5019	0644	edit dl rm
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serio.h	2139	0644	edit dl rm
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smc.h	8901	0644	edit dl rm
smc_diag.h	2951	0644	edit dl rm
smiapp.h	1058	0644	edit dl rm
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sockios.h	6846	0644	edit dl rm
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sonet.h	2290	0644	edit dl rm
sonypi.h	5309	0644	edit dl rm
sound.h	1237	0644	edit dl rm
soundcard.h	46038	0644	edit dl rm
stat.h	7404	0644	edit dl rm
stddef.h	1726	0644	edit dl rm
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string.h	238	0644	edit dl rm
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switchtec_ioctl.h	5262	0644	edit dl rm
synclink.h	8985	0644	edit dl rm
sync_file.h	3578	0644	edit dl rm
sysctl.h	25910	0644	edit dl rm
sysinfo.h	1049	0644	edit dl rm
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taskstats.h	8322	0644	edit dl rm
tcp.h	11986	0644	edit dl rm
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thermal.h	3310	0644	edit dl rm
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tipc.h	8825	0644	edit dl rm
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Edit: /usr/include/linux/vfio.h (71840B)

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * VFIO API definition
 *
 * Copyright (C) 2012 Red Hat, Inc.  All rights reserved.
 *     Author: Alex Williamson <alex.williamson@redhat.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef VFIO_H
#define VFIO_H

#include <linux/types.h>
#include <linux/ioctl.h>

#define VFIO_API_VERSION	0

/* Kernel & User level defines for VFIO IOCTLs. */

/* Extensions */

#define VFIO_TYPE1_IOMMU		1
#define VFIO_SPAPR_TCE_IOMMU		2
#define VFIO_TYPE1v2_IOMMU		3
/*
 * IOMMU enforces DMA cache coherence (ex. PCIe NoSnoop stripping).  This
 * capability is subject to change as groups are added or removed.
 */
#define VFIO_DMA_CC_IOMMU		4

/* Check if EEH is supported */
#define VFIO_EEH			5

/* Two-stage IOMMU */
#define __VFIO_RESERVED_TYPE1_NESTING_IOMMU	6	/* Implies v2 */

#define VFIO_SPAPR_TCE_v2_IOMMU		7

/*
 * The No-IOMMU IOMMU offers no translation or isolation for devices and
 * supports no ioctls outside of VFIO_CHECK_EXTENSION.  Use of VFIO's No-IOMMU
 * code will taint the host kernel and should be used with extreme caution.
 */
#define VFIO_NOIOMMU_IOMMU		8

/* Supports VFIO_DMA_UNMAP_FLAG_ALL */
#define VFIO_UNMAP_ALL			9

/*
 * Supports the vaddr flag for DMA map and unmap.  Not supported for mediated
 * devices, so this capability is subject to change as groups are added or
 * removed.
 */
#define VFIO_UPDATE_VADDR		10

/*
 * The IOCTL interface is designed for extensibility by embedding the
 * structure length (argsz) and flags into structures passed between
 * kernel and userspace.  We therefore use the _IO() macro for these
 * defines to avoid implicitly embedding a size into the ioctl request.
 * As structure fields are added, argsz will increase to match and flag
 * bits will be defined to indicate additional fields with valid data.
 * It's *always* the caller's responsibility to indicate the size of
 * the structure passed by setting argsz appropriately.
 */

#define VFIO_TYPE	(';')
#define VFIO_BASE	100

/*
 * For extension of INFO ioctls, VFIO makes use of a capability chain
 * designed after PCI/e capabilities.  A flag bit indicates whether
 * this capability chain is supported and a field defined in the fixed
 * structure defines the offset of the first capability in the chain.
 * This field is only valid when the corresponding bit in the flags
 * bitmap is set.  This offset field is relative to the start of the
 * INFO buffer, as is the next field within each capability header.
 * The id within the header is a shared address space per INFO ioctl,
 * while the version field is specific to the capability id.  The
 * contents following the header are specific to the capability id.
 */
struct vfio_info_cap_header {
	__u16	id;		/* Identifies capability */
	__u16	version;	/* Version specific to the capability ID */
	__u32	next;		/* Offset of next capability */
};

/*
 * Callers of INFO ioctls passing insufficiently sized buffers will see
 * the capability chain flag bit set, a zero value for the first capability
 * offset (if available within the provided argsz), and argsz will be
 * updated to report the necessary buffer size.  For compatibility, the
 * INFO ioctl will not report error in this case, but the capability chain
 * will not be available.
 */

/* -------- IOCTLs for VFIO file descriptor (/dev/vfio/vfio) -------- */

/**
 * VFIO_GET_API_VERSION - _IO(VFIO_TYPE, VFIO_BASE + 0)
 *
 * Report the version of the VFIO API.  This allows us to bump the entire
 * API version should we later need to add or change features in incompatible
 * ways.
 * Return: VFIO_API_VERSION
 * Availability: Always
 */
#define VFIO_GET_API_VERSION		_IO(VFIO_TYPE, VFIO_BASE + 0)

/**
 * VFIO_CHECK_EXTENSION - _IOW(VFIO_TYPE, VFIO_BASE + 1, __u32)
 *
 * Check whether an extension is supported.
 * Return: 0 if not supported, 1 (or some other positive integer) if supported.
 * Availability: Always
 */
#define VFIO_CHECK_EXTENSION		_IO(VFIO_TYPE, VFIO_BASE + 1)

/**
 * VFIO_SET_IOMMU - _IOW(VFIO_TYPE, VFIO_BASE + 2, __s32)
 *
 * Set the iommu to the given type.  The type must be supported by an
 * iommu driver as verified by calling CHECK_EXTENSION using the same
 * type.  A group must be set to this file descriptor before this
 * ioctl is available.  The IOMMU interfaces enabled by this call are
 * specific to the value set.
 * Return: 0 on success, -errno on failure
 * Availability: When VFIO group attached
 */
#define VFIO_SET_IOMMU			_IO(VFIO_TYPE, VFIO_BASE + 2)

/* -------- IOCTLs for GROUP file descriptors (/dev/vfio/$GROUP) -------- */

/**
 * VFIO_GROUP_GET_STATUS - _IOR(VFIO_TYPE, VFIO_BASE + 3,
 *						struct vfio_group_status)
 *
 * Retrieve information about the group.  Fills in provided
 * struct vfio_group_info.  Caller sets argsz.
 * Return: 0 on succes, -errno on failure.
 * Availability: Always
 */
struct vfio_group_status {
	__u32	argsz;
	__u32	flags;
#define VFIO_GROUP_FLAGS_VIABLE		(1 << 0)
#define VFIO_GROUP_FLAGS_CONTAINER_SET	(1 << 1)
};
#define VFIO_GROUP_GET_STATUS		_IO(VFIO_TYPE, VFIO_BASE + 3)

/**
 * VFIO_GROUP_SET_CONTAINER - _IOW(VFIO_TYPE, VFIO_BASE + 4, __s32)
 *
 * Set the container for the VFIO group to the open VFIO file
 * descriptor provided.  Groups may only belong to a single
 * container.  Containers may, at their discretion, support multiple
 * groups.  Only when a container is set are all of the interfaces
 * of the VFIO file descriptor and the VFIO group file descriptor
 * available to the user.
 * Return: 0 on success, -errno on failure.
 * Availability: Always
 */
#define VFIO_GROUP_SET_CONTAINER	_IO(VFIO_TYPE, VFIO_BASE + 4)

/**
 * VFIO_GROUP_UNSET_CONTAINER - _IO(VFIO_TYPE, VFIO_BASE + 5)
 *
 * Remove the group from the attached container.  This is the
 * opposite of the SET_CONTAINER call and returns the group to
 * an initial state.  All device file descriptors must be released
 * prior to calling this interface.  When removing the last group
 * from a container, the IOMMU will be disabled and all state lost,
 * effectively also returning the VFIO file descriptor to an initial
 * state.
 * Return: 0 on success, -errno on failure.
 * Availability: When attached to container
 */
#define VFIO_GROUP_UNSET_CONTAINER	_IO(VFIO_TYPE, VFIO_BASE + 5)

/**
 * VFIO_GROUP_GET_DEVICE_FD - _IOW(VFIO_TYPE, VFIO_BASE + 6, char)
 *
 * Return a new file descriptor for the device object described by
 * the provided string.  The string should match a device listed in
 * the devices subdirectory of the IOMMU group sysfs entry.  The
 * group containing the device must already be added to this context.
 * Return: new file descriptor on success, -errno on failure.
 * Availability: When attached to container
 */
#define VFIO_GROUP_GET_DEVICE_FD	_IO(VFIO_TYPE, VFIO_BASE + 6)

/* --------------- IOCTLs for DEVICE file descriptors --------------- */

/**
 * VFIO_DEVICE_GET_INFO - _IOR(VFIO_TYPE, VFIO_BASE + 7,
 *						struct vfio_device_info)
 *
 * Retrieve information about the device.  Fills in provided
 * struct vfio_device_info.  Caller sets argsz.
 * Return: 0 on success, -errno on failure.
 */
struct vfio_device_info {
	__u32	argsz;
	__u32	flags;
#define VFIO_DEVICE_FLAGS_RESET	(1 << 0)	/* Device supports reset */
#define VFIO_DEVICE_FLAGS_PCI	(1 << 1)	/* vfio-pci device */
#define VFIO_DEVICE_FLAGS_PLATFORM (1 << 2)	/* vfio-platform device */
#define VFIO_DEVICE_FLAGS_AMBA  (1 << 3)	/* vfio-amba device */
#define VFIO_DEVICE_FLAGS_CCW	(1 << 4)	/* vfio-ccw device */
#define VFIO_DEVICE_FLAGS_AP	(1 << 5)	/* vfio-ap device */
#define VFIO_DEVICE_FLAGS_FSL_MC (1 << 6)	/* vfio-fsl-mc device */
#define VFIO_DEVICE_FLAGS_CAPS	(1 << 7)	/* Info supports caps */
	__u32	num_regions;	/* Max region index + 1 */
	__u32	num_irqs;	/* Max IRQ index + 1 */
	__u32   cap_offset;	/* Offset within info struct of first cap */
	__u32   pad;
};
#define VFIO_DEVICE_GET_INFO		_IO(VFIO_TYPE, VFIO_BASE + 7)

/*
 * Vendor driver using Mediated device framework should provide device_api
 * attribute in supported type attribute groups. Device API string should be one
 * of the following corresponding to device flags in vfio_device_info structure.
 */

#define VFIO_DEVICE_API_PCI_STRING		"vfio-pci"
#define VFIO_DEVICE_API_PLATFORM_STRING		"vfio-platform"
#define VFIO_DEVICE_API_AMBA_STRING		"vfio-amba"
#define VFIO_DEVICE_API_CCW_STRING		"vfio-ccw"
#define VFIO_DEVICE_API_AP_STRING		"vfio-ap"

/*
 * The following capabilities are unique to s390 zPCI devices.  Their contents
 * are further-defined in vfio_zdev.h
 */
#define VFIO_DEVICE_INFO_CAP_ZPCI_BASE		1
#define VFIO_DEVICE_INFO_CAP_ZPCI_GROUP		2
#define VFIO_DEVICE_INFO_CAP_ZPCI_UTIL		3
#define VFIO_DEVICE_INFO_CAP_ZPCI_PFIP		4

/*
 * The following VFIO_DEVICE_INFO capability reports support for PCIe AtomicOp
 * completion to the root bus with supported widths provided via flags.
 */
#define VFIO_DEVICE_INFO_CAP_PCI_ATOMIC_COMP	5
struct vfio_device_info_cap_pci_atomic_comp {
	struct vfio_info_cap_header header;
	__u32 flags;
#define VFIO_PCI_ATOMIC_COMP32	(1 << 0)
#define VFIO_PCI_ATOMIC_COMP64	(1 << 1)
#define VFIO_PCI_ATOMIC_COMP128	(1 << 2)
	__u32 reserved;
};

/**
 * VFIO_DEVICE_GET_REGION_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 8,
 *				       struct vfio_region_info)
 *
 * Retrieve information about a device region.  Caller provides
 * struct vfio_region_info with index value set.  Caller sets argsz.
 * Implementation of region mapping is bus driver specific.  This is
 * intended to describe MMIO, I/O port, as well as bus specific
 * regions (ex. PCI config space).  Zero sized regions may be used
 * to describe unimplemented regions (ex. unimplemented PCI BARs).
 * Return: 0 on success, -errno on failure.
 */
struct vfio_region_info {
	__u32	argsz;
	__u32	flags;
#define VFIO_REGION_INFO_FLAG_READ	(1 << 0) /* Region supports read */
#define VFIO_REGION_INFO_FLAG_WRITE	(1 << 1) /* Region supports write */
#define VFIO_REGION_INFO_FLAG_MMAP	(1 << 2) /* Region supports mmap */
#define VFIO_REGION_INFO_FLAG_CAPS	(1 << 3) /* Info supports caps */
	__u32	index;		/* Region index */
	__u32	cap_offset;	/* Offset within info struct of first cap */
	__aligned_u64	size;	/* Region size (bytes) */
	__aligned_u64	offset;	/* Region offset from start of device fd */
};
#define VFIO_DEVICE_GET_REGION_INFO	_IO(VFIO_TYPE, VFIO_BASE + 8)

/*
 * The sparse mmap capability allows finer granularity of specifying areas
 * within a region with mmap support.  When specified, the user should only
 * mmap the offset ranges specified by the areas array.  mmaps outside of the
 * areas specified may fail (such as the range covering a PCI MSI-X table) or
 * may result in improper device behavior.
 *
 * The structures below define version 1 of this capability.
 */
#define VFIO_REGION_INFO_CAP_SPARSE_MMAP	1

struct vfio_region_sparse_mmap_area {
	__aligned_u64	offset;	/* Offset of mmap'able area within region */
	__aligned_u64	size;	/* Size of mmap'able area */
};

struct vfio_region_info_cap_sparse_mmap {
	struct vfio_info_cap_header header;
	__u32	nr_areas;
	__u32	reserved;
	struct vfio_region_sparse_mmap_area areas[];
};

/*
 * The device specific type capability allows regions unique to a specific
 * device or class of devices to be exposed.  This helps solve the problem for
 * vfio bus drivers of defining which region indexes correspond to which region
 * on the device, without needing to resort to static indexes, as done by
 * vfio-pci.  For instance, if we were to go back in time, we might remove
 * VFIO_PCI_VGA_REGION_INDEX and let vfio-pci simply define that all indexes
 * greater than or equal to VFIO_PCI_NUM_REGIONS are device specific and we'd
 * make a "VGA" device specific type to describe the VGA access space.  This
 * means that non-VGA devices wouldn't need to waste this index, and thus the
 * address space associated with it due to implementation of device file
 * descriptor offsets in vfio-pci.
 *
 * The current implementation is now part of the user ABI, so we can't use this
 * for VGA, but there are other upcoming use cases, such as opregions for Intel
 * IGD devices and framebuffers for vGPU devices.  We missed VGA, but we'll
 * use this for future additions.
 *
 * The structure below defines version 1 of this capability.
 */
#define VFIO_REGION_INFO_CAP_TYPE	2

struct vfio_region_info_cap_type {
	struct vfio_info_cap_header header;
	__u32 type;	/* global per bus driver */
	__u32 subtype;	/* type specific */
};

/*
 * List of region types, global per bus driver.
 * If you introduce a new type, please add it here.
 */

/* PCI region type containing a PCI vendor part */
#define VFIO_REGION_TYPE_PCI_VENDOR_TYPE	(1 << 31)
#define VFIO_REGION_TYPE_PCI_VENDOR_MASK	(0xffff)
#define VFIO_REGION_TYPE_GFX                    (1)
#define VFIO_REGION_TYPE_CCW			(2)
#define VFIO_REGION_TYPE_MIGRATION_DEPRECATED   (3)

/* sub-types for VFIO_REGION_TYPE_PCI_* */

/* 8086 vendor PCI sub-types */
#define VFIO_REGION_SUBTYPE_INTEL_IGD_OPREGION	(1)
#define VFIO_REGION_SUBTYPE_INTEL_IGD_HOST_CFG	(2)
#define VFIO_REGION_SUBTYPE_INTEL_IGD_LPC_CFG	(3)

/* 10de vendor PCI sub-types */
/*
 * NVIDIA GPU NVlink2 RAM is coherent RAM mapped onto the host address space.
 *
 * Deprecated, region no longer provided
 */
#define VFIO_REGION_SUBTYPE_NVIDIA_NVLINK2_RAM	(1)

/* 1014 vendor PCI sub-types */
/*
 * IBM NPU NVlink2 ATSD (Address Translation Shootdown) register of NPU
 * to do TLB invalidation on a GPU.
 *
 * Deprecated, region no longer provided
 */
#define VFIO_REGION_SUBTYPE_IBM_NVLINK2_ATSD	(1)

/* sub-types for VFIO_REGION_TYPE_GFX */
#define VFIO_REGION_SUBTYPE_GFX_EDID            (1)

/**
 * struct vfio_region_gfx_edid - EDID region layout.
 *
 * Set display link state and EDID blob.
 *
 * The EDID blob has monitor information such as brand, name, serial
 * number, physical size, supported video modes and more.
 *
 * This special region allows userspace (typically qemu) set a virtual
 * EDID for the virtual monitor, which allows a flexible display
 * configuration.
 *
 * For the edid blob spec look here:
 *    https://en.wikipedia.org/wiki/Extended_Display_Identification_Data
 *
 * On linux systems you can find the EDID blob in sysfs:
 *    /sys/class/drm/${card}/${connector}/edid
 *
 * You can use the edid-decode ulility (comes with xorg-x11-utils) to
 * decode the EDID blob.
 *
 * @edid_offset: location of the edid blob, relative to the
 *               start of the region (readonly).
 * @edid_max_size: max size of the edid blob (readonly).
 * @edid_size: actual edid size (read/write).
 * @link_state: display link state (read/write).
 * VFIO_DEVICE_GFX_LINK_STATE_UP: Monitor is turned on.
 * VFIO_DEVICE_GFX_LINK_STATE_DOWN: Monitor is turned off.
 * @max_xres: max display width (0 == no limitation, readonly).
 * @max_yres: max display height (0 == no limitation, readonly).
 *
 * EDID update protocol:
 *   (1) set link-state to down.
 *   (2) update edid blob and size.
 *   (3) set link-state to up.
 */
struct vfio_region_gfx_edid {
	__u32 edid_offset;
	__u32 edid_max_size;
	__u32 edid_size;
	__u32 max_xres;
	__u32 max_yres;
	__u32 link_state;
#define VFIO_DEVICE_GFX_LINK_STATE_UP    1
#define VFIO_DEVICE_GFX_LINK_STATE_DOWN  2
};

/* sub-types for VFIO_REGION_TYPE_CCW */
#define VFIO_REGION_SUBTYPE_CCW_ASYNC_CMD	(1)
#define VFIO_REGION_SUBTYPE_CCW_SCHIB		(2)
#define VFIO_REGION_SUBTYPE_CCW_CRW		(3)

/* sub-types for VFIO_REGION_TYPE_MIGRATION */
#define VFIO_REGION_SUBTYPE_MIGRATION_DEPRECATED (1)

struct vfio_device_migration_info {
	__u32 device_state;         /* VFIO device state */
#define VFIO_DEVICE_STATE_V1_STOP      (0)
#define VFIO_DEVICE_STATE_V1_RUNNING   (1 << 0)
#define VFIO_DEVICE_STATE_V1_SAVING    (1 << 1)
#define VFIO_DEVICE_STATE_V1_RESUMING  (1 << 2)
#define VFIO_DEVICE_STATE_MASK      (VFIO_DEVICE_STATE_V1_RUNNING | \
				     VFIO_DEVICE_STATE_V1_SAVING |  \
				     VFIO_DEVICE_STATE_V1_RESUMING)

#define VFIO_DEVICE_STATE_VALID(state) \
	(state & VFIO_DEVICE_STATE_V1_RESUMING ? \
	(state & VFIO_DEVICE_STATE_MASK) == VFIO_DEVICE_STATE_V1_RESUMING : 1)

#define VFIO_DEVICE_STATE_IS_ERROR(state) \
	((state & VFIO_DEVICE_STATE_MASK) == (VFIO_DEVICE_STATE_V1_SAVING | \
					      VFIO_DEVICE_STATE_V1_RESUMING))

#define VFIO_DEVICE_STATE_SET_ERROR(state) \
	((state & ~VFIO_DEVICE_STATE_MASK) | VFIO_DEVICE_STATE_V1_SAVING | \
					     VFIO_DEVICE_STATE_V1_RESUMING)

__u32 reserved;
	__aligned_u64 pending_bytes;
	__aligned_u64 data_offset;
	__aligned_u64 data_size;
};

/*
 * The MSIX mappable capability informs that MSIX data of a BAR can be mmapped
 * which allows direct access to non-MSIX registers which happened to be within
 * the same system page.
 *
 * Even though the userspace gets direct access to the MSIX data, the existing
 * VFIO_DEVICE_SET_IRQS interface must still be used for MSIX configuration.
 */
#define VFIO_REGION_INFO_CAP_MSIX_MAPPABLE	3

/*
 * Capability with compressed real address (aka SSA - small system address)
 * where GPU RAM is mapped on a system bus. Used by a GPU for DMA routing
 * and by the userspace to associate a NVLink bridge with a GPU.
 *
 * Deprecated, capability no longer provided
 */
#define VFIO_REGION_INFO_CAP_NVLINK2_SSATGT	4

struct vfio_region_info_cap_nvlink2_ssatgt {
	struct vfio_info_cap_header header;
	__aligned_u64 tgt;
};

/*
 * Capability with an NVLink link speed. The value is read by
 * the NVlink2 bridge driver from the bridge's "ibm,nvlink-speed"
 * property in the device tree. The value is fixed in the hardware
 * and failing to provide the correct value results in the link
 * not working with no indication from the driver why.
 *
 * Deprecated, capability no longer provided
 */
#define VFIO_REGION_INFO_CAP_NVLINK2_LNKSPD	5

struct vfio_region_info_cap_nvlink2_lnkspd {
	struct vfio_info_cap_header header;
	__u32 link_speed;
	__u32 __pad;
};

/**
 * VFIO_DEVICE_GET_IRQ_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 9,
 *				    struct vfio_irq_info)
 *
 * Retrieve information about a device IRQ.  Caller provides
 * struct vfio_irq_info with index value set.  Caller sets argsz.
 * Implementation of IRQ mapping is bus driver specific.  Indexes
 * using multiple IRQs are primarily intended to support MSI-like
 * interrupt blocks.  Zero count irq blocks may be used to describe
 * unimplemented interrupt types.
 *
 * The EVENTFD flag indicates the interrupt index supports eventfd based
 * signaling.
 *
 * The MASKABLE flags indicates the index supports MASK and UNMASK
 * actions described below.
 *
 * AUTOMASKED indicates that after signaling, the interrupt line is
 * automatically masked by VFIO and the user needs to unmask the line
 * to receive new interrupts.  This is primarily intended to distinguish
 * level triggered interrupts.
 *
 * The NORESIZE flag indicates that the interrupt lines within the index
 * are setup as a set and new subindexes cannot be enabled without first
 * disabling the entire index.  This is used for interrupts like PCI MSI
 * and MSI-X where the driver may only use a subset of the available
 * indexes, but VFIO needs to enable a specific number of vectors
 * upfront.  In the case of MSI-X, where the user can enable MSI-X and
 * then add and unmask vectors, it's up to userspace to make the decision
 * whether to allocate the maximum supported number of vectors or tear
 * down setup and incrementally increase the vectors as each is enabled.
 * Absence of the NORESIZE flag indicates that vectors can be enabled
 * and disabled dynamically without impacting other vectors within the
 * index.
 */
struct vfio_irq_info {
	__u32	argsz;
	__u32	flags;
#define VFIO_IRQ_INFO_EVENTFD		(1 << 0)
#define VFIO_IRQ_INFO_MASKABLE		(1 << 1)
#define VFIO_IRQ_INFO_AUTOMASKED	(1 << 2)
#define VFIO_IRQ_INFO_NORESIZE		(1 << 3)
	__u32	index;		/* IRQ index */
	__u32	count;		/* Number of IRQs within this index */
};
#define VFIO_DEVICE_GET_IRQ_INFO	_IO(VFIO_TYPE, VFIO_BASE + 9)

/**
 * VFIO_DEVICE_SET_IRQS - _IOW(VFIO_TYPE, VFIO_BASE + 10, struct vfio_irq_set)
 *
 * Set signaling, masking, and unmasking of interrupts.  Caller provides
 * struct vfio_irq_set with all fields set.  'start' and 'count' indicate
 * the range of subindexes being specified.
 *
 * The DATA flags specify the type of data provided.  If DATA_NONE, the
 * operation performs the specified action immediately on the specified
 * interrupt(s).  For example, to unmask AUTOMASKED interrupt [0,0]:
 * flags = (DATA_NONE|ACTION_UNMASK), index = 0, start = 0, count = 1.
 *
 * DATA_BOOL allows sparse support for the same on arrays of interrupts.
 * For example, to mask interrupts [0,1] and [0,3] (but not [0,2]):
 * flags = (DATA_BOOL|ACTION_MASK), index = 0, start = 1, count = 3,
 * data = {1,0,1}
 *
 * DATA_EVENTFD binds the specified ACTION to the provided __s32 eventfd.
 * A value of -1 can be used to either de-assign interrupts if already
 * assigned or skip un-assigned interrupts.  For example, to set an eventfd
 * to be trigger for interrupts [0,0] and [0,2]:
 * flags = (DATA_EVENTFD|ACTION_TRIGGER), index = 0, start = 0, count = 3,
 * data = {fd1, -1, fd2}
 * If index [0,1] is previously set, two count = 1 ioctls calls would be
 * required to set [0,0] and [0,2] without changing [0,1].
 *
 * Once a signaling mechanism is set, DATA_BOOL or DATA_NONE can be used
 * with ACTION_TRIGGER to perform kernel level interrupt loopback testing
 * from userspace (ie. simulate hardware triggering).
 *
 * Setting of an event triggering mechanism to userspace for ACTION_TRIGGER
 * enables the interrupt index for the device.  Individual subindex interrupts
 * can be disabled using the -1 value for DATA_EVENTFD or the index can be
 * disabled as a whole with: flags = (DATA_NONE|ACTION_TRIGGER), count = 0.
 *
 * Note that ACTION_[UN]MASK specify user->kernel signaling (irqfds) while
 * ACTION_TRIGGER specifies kernel->user signaling.
 */
struct vfio_irq_set {
	__u32	argsz;
	__u32	flags;
#define VFIO_IRQ_SET_DATA_NONE		(1 << 0) /* Data not present */
#define VFIO_IRQ_SET_DATA_BOOL		(1 << 1) /* Data is bool (u8) */
#define VFIO_IRQ_SET_DATA_EVENTFD	(1 << 2) /* Data is eventfd (s32) */
#define VFIO_IRQ_SET_ACTION_MASK	(1 << 3) /* Mask interrupt */
#define VFIO_IRQ_SET_ACTION_UNMASK	(1 << 4) /* Unmask interrupt */
#define VFIO_IRQ_SET_ACTION_TRIGGER	(1 << 5) /* Trigger interrupt */
	__u32	index;
	__u32	start;
	__u32	count;
	__u8	data[];
};
#define VFIO_DEVICE_SET_IRQS		_IO(VFIO_TYPE, VFIO_BASE + 10)

#define VFIO_IRQ_SET_DATA_TYPE_MASK	(VFIO_IRQ_SET_DATA_NONE | \
					 VFIO_IRQ_SET_DATA_BOOL | \
					 VFIO_IRQ_SET_DATA_EVENTFD)
#define VFIO_IRQ_SET_ACTION_TYPE_MASK	(VFIO_IRQ_SET_ACTION_MASK | \
					 VFIO_IRQ_SET_ACTION_UNMASK | \
					 VFIO_IRQ_SET_ACTION_TRIGGER)
/**
 * VFIO_DEVICE_RESET - _IO(VFIO_TYPE, VFIO_BASE + 11)
 *
 * Reset a device.
 */
#define VFIO_DEVICE_RESET		_IO(VFIO_TYPE, VFIO_BASE + 11)

/*
 * The VFIO-PCI bus driver makes use of the following fixed region and
 * IRQ index mapping.  Unimplemented regions return a size of zero.
 * Unimplemented IRQ types return a count of zero.
 */

enum {
	VFIO_PCI_BAR0_REGION_INDEX,
	VFIO_PCI_BAR1_REGION_INDEX,
	VFIO_PCI_BAR2_REGION_INDEX,
	VFIO_PCI_BAR3_REGION_INDEX,
	VFIO_PCI_BAR4_REGION_INDEX,
	VFIO_PCI_BAR5_REGION_INDEX,
	VFIO_PCI_ROM_REGION_INDEX,
	VFIO_PCI_CONFIG_REGION_INDEX,
	/*
	 * Expose VGA regions defined for PCI base class 03, subclass 00.
	 * This includes I/O port ranges 0x3b0 to 0x3bb and 0x3c0 to 0x3df
	 * as well as the MMIO range 0xa0000 to 0xbffff.  Each implemented
	 * range is found at it's identity mapped offset from the region
	 * offset, for example 0x3b0 is region_info.offset + 0x3b0.  Areas
	 * between described ranges are unimplemented.
	 */
	VFIO_PCI_VGA_REGION_INDEX,
	VFIO_PCI_NUM_REGIONS = 9 /* Fixed user ABI, region indexes >=9 use */
				 /* device specific cap to define content. */
};

enum {
	VFIO_PCI_INTX_IRQ_INDEX,
	VFIO_PCI_MSI_IRQ_INDEX,
	VFIO_PCI_MSIX_IRQ_INDEX,
	VFIO_PCI_ERR_IRQ_INDEX,
	VFIO_PCI_REQ_IRQ_INDEX,
	VFIO_PCI_NUM_IRQS
};

/*
 * The vfio-ccw bus driver makes use of the following fixed region and
 * IRQ index mapping. Unimplemented regions return a size of zero.
 * Unimplemented IRQ types return a count of zero.
 */

enum {
	VFIO_CCW_CONFIG_REGION_INDEX,
	VFIO_CCW_NUM_REGIONS
};

enum {
	VFIO_CCW_IO_IRQ_INDEX,
	VFIO_CCW_CRW_IRQ_INDEX,
	VFIO_CCW_REQ_IRQ_INDEX,
	VFIO_CCW_NUM_IRQS
};

/*
 * The vfio-ap bus driver makes use of the following IRQ index mapping.
 * Unimplemented IRQ types return a count of zero.
 */
enum {
	VFIO_AP_REQ_IRQ_INDEX,
	VFIO_AP_CFG_CHG_IRQ_INDEX,
	VFIO_AP_NUM_IRQS
};

/**
 * VFIO_DEVICE_GET_PCI_HOT_RESET_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 12,
 *					      struct vfio_pci_hot_reset_info)
 *
 * This command is used to query the affected devices in the hot reset for
 * a given device.
 *
 * This command always reports the segment, bus, and devfn information for
 * each affected device, and selectively reports the group_id or devid per
 * the way how the calling device is opened.
 *
 *	- If the calling device is opened via the traditional group/container
 *	  API, group_id is reported.  User should check if it has owned all
 *	  the affected devices and provides a set of group fds to prove the
 *	  ownership in VFIO_DEVICE_PCI_HOT_RESET ioctl.
 *
 *	- If the calling device is opened as a cdev, devid is reported.
 *	  Flag VFIO_PCI_HOT_RESET_FLAG_DEV_ID is set to indicate this
 *	  data type.  All the affected devices should be represented in
 *	  the dev_set, ex. bound to a vfio driver, and also be owned by
 *	  this interface which is determined by the following conditions:
 *	  1) Has a valid devid within the iommufd_ctx of the calling device.
 *	     Ownership cannot be determined across separate iommufd_ctx and
 *	     the cdev calling conventions do not support a proof-of-ownership
 *	     model as provided in the legacy group interface.  In this case
 *	     valid devid with value greater than zero is provided in the return
 *	     structure.
 *	  2) Does not have a valid devid within the iommufd_ctx of the calling
 *	     device, but belongs to the same IOMMU group as the calling device
 *	     or another opened device that has a valid devid within the
 *	     iommufd_ctx of the calling device.  This provides implicit ownership
 *	     for devices within the same DMA isolation context.  In this case
 *	     the devid value of VFIO_PCI_DEVID_OWNED is provided in the return
 *	     structure.
 *
 *	  A devid value of VFIO_PCI_DEVID_NOT_OWNED is provided in the return
 *	  structure for affected devices where device is NOT represented in the
 *	  dev_set or ownership is not available.  Such devices prevent the use
 *	  of VFIO_DEVICE_PCI_HOT_RESET ioctl outside of the proof-of-ownership
 *	  calling conventions (ie. via legacy group accessed devices).  Flag
 *	  VFIO_PCI_HOT_RESET_FLAG_DEV_ID_OWNED would be set when all the
 *	  affected devices are represented in the dev_set and also owned by
 *	  the user.  This flag is available only when
 *	  flag VFIO_PCI_HOT_RESET_FLAG_DEV_ID is set, otherwise reserved.
 *	  When set, user could invoke VFIO_DEVICE_PCI_HOT_RESET with a zero
 *	  length fd array on the calling device as the ownership is validated
 *	  by iommufd_ctx.
 *
 * Return: 0 on success, -errno on failure:
 *	-enospc = insufficient buffer, -enodev = unsupported for device.
 */
struct vfio_pci_dependent_device {
	union {
		__u32   group_id;
		__u32	devid;
#define VFIO_PCI_DEVID_OWNED		0
#define VFIO_PCI_DEVID_NOT_OWNED	-1
	};
	__u16	segment;
	__u8	bus;
	__u8	devfn; /* Use PCI_SLOT/PCI_FUNC */
};

struct vfio_pci_hot_reset_info {
	__u32	argsz;
	__u32	flags;
#define VFIO_PCI_HOT_RESET_FLAG_DEV_ID		(1 << 0)
#define VFIO_PCI_HOT_RESET_FLAG_DEV_ID_OWNED	(1 << 1)
	__u32	count;
	struct vfio_pci_dependent_device	devices[];
};

#define VFIO_DEVICE_GET_PCI_HOT_RESET_INFO	_IO(VFIO_TYPE, VFIO_BASE + 12)

/**
 * VFIO_DEVICE_PCI_HOT_RESET - _IOW(VFIO_TYPE, VFIO_BASE + 13,
 *				    struct vfio_pci_hot_reset)
 *
 * A PCI hot reset results in either a bus or slot reset which may affect
 * other devices sharing the bus/slot.  The calling user must have
 * ownership of the full set of affected devices as determined by the
 * VFIO_DEVICE_GET_PCI_HOT_RESET_INFO ioctl.
 *
 * When called on a device file descriptor acquired through the vfio
 * group interface, the user is required to provide proof of ownership
 * of those affected devices via the group_fds array in struct
 * vfio_pci_hot_reset.
 *
 * When called on a direct cdev opened vfio device, the flags field of
 * struct vfio_pci_hot_reset_info reports the ownership status of the
 * affected devices and this ioctl must be called with an empty group_fds
 * array.  See above INFO ioctl definition for ownership requirements.
 *
 * Mixed usage of legacy groups and cdevs across the set of affected
 * devices is not supported.
 *
 * Return: 0 on success, -errno on failure.
 */
struct vfio_pci_hot_reset {
	__u32	argsz;
	__u32	flags;
	__u32	count;
	__s32	group_fds[];
};

#define VFIO_DEVICE_PCI_HOT_RESET	_IO(VFIO_TYPE, VFIO_BASE + 13)

/**
 * VFIO_DEVICE_QUERY_GFX_PLANE - _IOW(VFIO_TYPE, VFIO_BASE + 14,
 *                                    struct vfio_device_query_gfx_plane)
 *
 * Set the drm_plane_type and flags, then retrieve the gfx plane info.
 *
 * flags supported:
 * - VFIO_GFX_PLANE_TYPE_PROBE and VFIO_GFX_PLANE_TYPE_DMABUF are set
 *   to ask if the mdev supports dma-buf. 0 on support, -EINVAL on no
 *   support for dma-buf.
 * - VFIO_GFX_PLANE_TYPE_PROBE and VFIO_GFX_PLANE_TYPE_REGION are set
 *   to ask if the mdev supports region. 0 on support, -EINVAL on no
 *   support for region.
 * - VFIO_GFX_PLANE_TYPE_DMABUF or VFIO_GFX_PLANE_TYPE_REGION is set
 *   with each call to query the plane info.
 * - Others are invalid and return -EINVAL.
 *
 * Note:
 * 1. Plane could be disabled by guest. In that case, success will be
 *    returned with zero-initialized drm_format, size, width and height
 *    fields.
 * 2. x_hot/y_hot is set to 0xFFFFFFFF if no hotspot information available
 *
 * Return: 0 on success, -errno on other failure.
 */
struct vfio_device_gfx_plane_info {
	__u32 argsz;
	__u32 flags;
#define VFIO_GFX_PLANE_TYPE_PROBE (1 << 0)
#define VFIO_GFX_PLANE_TYPE_DMABUF (1 << 1)
#define VFIO_GFX_PLANE_TYPE_REGION (1 << 2)
	/* in */
	__u32 drm_plane_type;	/* type of plane: DRM_PLANE_TYPE_* */
	/* out */
	__u32 drm_format;	/* drm format of plane */
	__aligned_u64 drm_format_mod;   /* tiled mode */
	__u32 width;	/* width of plane */
	__u32 height;	/* height of plane */
	__u32 stride;	/* stride of plane */
	__u32 size;	/* size of plane in bytes, align on page*/
	__u32 x_pos;	/* horizontal position of cursor plane */
	__u32 y_pos;	/* vertical position of cursor plane*/
	__u32 x_hot;    /* horizontal position of cursor hotspot */
	__u32 y_hot;    /* vertical position of cursor hotspot */
	union {
		__u32 region_index;	/* region index */
		__u32 dmabuf_id;	/* dma-buf id */
	};
	__u32 reserved;
};

#define VFIO_DEVICE_QUERY_GFX_PLANE _IO(VFIO_TYPE, VFIO_BASE + 14)

/**
 * VFIO_DEVICE_GET_GFX_DMABUF - _IOW(VFIO_TYPE, VFIO_BASE + 15, __u32)
 *
 * Return a new dma-buf file descriptor for an exposed guest framebuffer
 * described by the provided dmabuf_id. The dmabuf_id is returned from VFIO_
 * DEVICE_QUERY_GFX_PLANE as a token of the exposed guest framebuffer.
 */

#define VFIO_DEVICE_GET_GFX_DMABUF _IO(VFIO_TYPE, VFIO_BASE + 15)

/**
 * VFIO_DEVICE_IOEVENTFD - _IOW(VFIO_TYPE, VFIO_BASE + 16,
 *                              struct vfio_device_ioeventfd)
 *
 * Perform a write to the device at the specified device fd offset, with
 * the specified data and width when the provided eventfd is triggered.
 * vfio bus drivers may not support this for all regions, for all widths,
 * or at all.  vfio-pci currently only enables support for BAR regions,
 * excluding the MSI-X vector table.
 *
 * Return: 0 on success, -errno on failure.
 */
struct vfio_device_ioeventfd {
	__u32	argsz;
	__u32	flags;
#define VFIO_DEVICE_IOEVENTFD_8		(1 << 0) /* 1-byte write */
#define VFIO_DEVICE_IOEVENTFD_16	(1 << 1) /* 2-byte write */
#define VFIO_DEVICE_IOEVENTFD_32	(1 << 2) /* 4-byte write */
#define VFIO_DEVICE_IOEVENTFD_64	(1 << 3) /* 8-byte write */
#define VFIO_DEVICE_IOEVENTFD_SIZE_MASK	(0xf)
	__aligned_u64	offset;		/* device fd offset of write */
	__aligned_u64	data;		/* data to be written */
	__s32	fd;			/* -1 for de-assignment */
	__u32	reserved;
};

#define VFIO_DEVICE_IOEVENTFD		_IO(VFIO_TYPE, VFIO_BASE + 16)

/**
 * VFIO_DEVICE_FEATURE - _IOWR(VFIO_TYPE, VFIO_BASE + 17,
 *			       struct vfio_device_feature)
 *
 * Get, set, or probe feature data of the device.  The feature is selected
 * using the FEATURE_MASK portion of the flags field.  Support for a feature
 * can be probed by setting both the FEATURE_MASK and PROBE bits.  A probe
 * may optionally include the GET and/or SET bits to determine read vs write
 * access of the feature respectively.  Probing a feature will return success
 * if the feature is supported and all of the optionally indicated GET/SET
 * methods are supported.  The format of the data portion of the structure is
 * specific to the given feature.  The data portion is not required for
 * probing.  GET and SET are mutually exclusive, except for use with PROBE.
 *
 * Return 0 on success, -errno on failure.
 */
struct vfio_device_feature {
	__u32	argsz;
	__u32	flags;
#define VFIO_DEVICE_FEATURE_MASK	(0xffff) /* 16-bit feature index */
#define VFIO_DEVICE_FEATURE_GET		(1 << 16) /* Get feature into data[] */
#define VFIO_DEVICE_FEATURE_SET		(1 << 17) /* Set feature from data[] */
#define VFIO_DEVICE_FEATURE_PROBE	(1 << 18) /* Probe feature support */
	__u8	data[];
};

#define VFIO_DEVICE_FEATURE		_IO(VFIO_TYPE, VFIO_BASE + 17)

/*
 * VFIO_DEVICE_BIND_IOMMUFD - _IOR(VFIO_TYPE, VFIO_BASE + 18,
 *				   struct vfio_device_bind_iommufd)
 * @argsz:	 User filled size of this data.
 * @flags:	 Must be 0.
 * @iommufd:	 iommufd to bind.
 * @out_devid:	 The device id generated by this bind. devid is a handle for
 *		 this device/iommufd bond and can be used in IOMMUFD commands.
 *
 * Bind a vfio_device to the specified iommufd.
 *
 * User is restricted from accessing the device before the binding operation
 * is completed.  Only allowed on cdev fds.
 *
 * Unbind is automatically conducted when device fd is closed.
 *
 * Return: 0 on success, -errno on failure.
 */
struct vfio_device_bind_iommufd {
	__u32		argsz;
	__u32		flags;
	__s32		iommufd;
	__u32		out_devid;
};

#define VFIO_DEVICE_BIND_IOMMUFD	_IO(VFIO_TYPE, VFIO_BASE + 18)

/*
 * VFIO_DEVICE_ATTACH_IOMMUFD_PT - _IOW(VFIO_TYPE, VFIO_BASE + 19,
 *					struct vfio_device_attach_iommufd_pt)
 * @argsz:	User filled size of this data.
 * @flags:	Must be 0.
 * @pt_id:	Input the target id which can represent an ioas or a hwpt
 *		allocated via iommufd subsystem.
 *		Output the input ioas id or the attached hwpt id which could
 *		be the specified hwpt itself or a hwpt automatically created
 *		for the specified ioas by kernel during the attachment.
 *
 * Associate the device with an address space within the bound iommufd.
 * Undo by VFIO_DEVICE_DETACH_IOMMUFD_PT or device fd close.  This is only
 * allowed on cdev fds.
 *
 * If a vfio device is currently attached to a valid hw_pagetable, without doing
 * a VFIO_DEVICE_DETACH_IOMMUFD_PT, a second VFIO_DEVICE_ATTACH_IOMMUFD_PT ioctl
 * passing in another hw_pagetable (hwpt) id is allowed. This action, also known
 * as a hw_pagetable replacement, will replace the device's currently attached
 * hw_pagetable with a new hw_pagetable corresponding to the given pt_id.
 *
 * Return: 0 on success, -errno on failure.
 */
struct vfio_device_attach_iommufd_pt {
	__u32	argsz;
	__u32	flags;
	__u32	pt_id;
};

#define VFIO_DEVICE_ATTACH_IOMMUFD_PT		_IO(VFIO_TYPE, VFIO_BASE + 19)

/*
 * VFIO_DEVICE_DETACH_IOMMUFD_PT - _IOW(VFIO_TYPE, VFIO_BASE + 20,
 *					struct vfio_device_detach_iommufd_pt)
 * @argsz:	User filled size of this data.
 * @flags:	Must be 0.
 *
 * Remove the association of the device and its current associated address
 * space.  After it, the device should be in a blocking DMA state.  This is only
 * allowed on cdev fds.
 *
 * Return: 0 on success, -errno on failure.
 */
struct vfio_device_detach_iommufd_pt {
	__u32	argsz;
	__u32	flags;
};

#define VFIO_DEVICE_DETACH_IOMMUFD_PT		_IO(VFIO_TYPE, VFIO_BASE + 20)

/*
 * Provide support for setting a PCI VF Token, which is used as a shared
 * secret between PF and VF drivers.  This feature may only be set on a
 * PCI SR-IOV PF when SR-IOV is enabled on the PF and there are no existing
 * open VFs.  Data provided when setting this feature is a 16-byte array
 * (__u8 b[16]), representing a UUID.
 */
#define VFIO_DEVICE_FEATURE_PCI_VF_TOKEN	(0)

/*
 * Indicates the device can support the migration API through
 * VFIO_DEVICE_FEATURE_MIG_DEVICE_STATE. If this GET succeeds, the RUNNING and
 * ERROR states are always supported. Support for additional states is
 * indicated via the flags field; at least VFIO_MIGRATION_STOP_COPY must be
 * set.
 *
 * VFIO_MIGRATION_STOP_COPY means that STOP, STOP_COPY and
 * RESUMING are supported.
 *
 * VFIO_MIGRATION_STOP_COPY | VFIO_MIGRATION_P2P means that RUNNING_P2P
 * is supported in addition to the STOP_COPY states.
 *
 * VFIO_MIGRATION_STOP_COPY | VFIO_MIGRATION_PRE_COPY means that
 * PRE_COPY is supported in addition to the STOP_COPY states.
 *
 * VFIO_MIGRATION_STOP_COPY | VFIO_MIGRATION_P2P | VFIO_MIGRATION_PRE_COPY
 * means that RUNNING_P2P, PRE_COPY and PRE_COPY_P2P are supported
 * in addition to the STOP_COPY states.
 *
 * Other combinations of flags have behavior to be defined in the future.
 */
struct vfio_device_feature_migration {
	__aligned_u64 flags;
#define VFIO_MIGRATION_STOP_COPY	(1 << 0)
#define VFIO_MIGRATION_P2P		(1 << 1)
#define VFIO_MIGRATION_PRE_COPY		(1 << 2)
};
#define VFIO_DEVICE_FEATURE_MIGRATION 1

/*
 * Upon VFIO_DEVICE_FEATURE_SET, execute a migration state change on the VFIO
 * device. The new state is supplied in device_state, see enum
 * vfio_device_mig_state for details
 *
 * The kernel migration driver must fully transition the device to the new state
 * value before the operation returns to the user.
 *
 * The kernel migration driver must not generate asynchronous device state
 * transitions outside of manipulation by the user or the VFIO_DEVICE_RESET
 * ioctl as described above.
 *
 * If this function fails then current device_state may be the original
 * operating state or some other state along the combination transition path.
 * The user can then decide if it should execute a VFIO_DEVICE_RESET, attempt
 * to return to the original state, or attempt to return to some other state
 * such as RUNNING or STOP.
 *
 * If the new_state starts a new data transfer session then the FD associated
 * with that session is returned in data_fd. The user is responsible to close
 * this FD when it is finished. The user must consider the migration data stream
 * carried over the FD to be opaque and must preserve the byte order of the
 * stream. The user is not required to preserve buffer segmentation when writing
 * the data stream during the RESUMING operation.
 *
 * Upon VFIO_DEVICE_FEATURE_GET, get the current migration state of the VFIO
 * device, data_fd will be -1.
 */
struct vfio_device_feature_mig_state {
	__u32 device_state; /* From enum vfio_device_mig_state */
	__s32 data_fd;
};
#define VFIO_DEVICE_FEATURE_MIG_DEVICE_STATE 2

/*
 * The device migration Finite State Machine is described by the enum
 * vfio_device_mig_state. Some of the FSM arcs will create a migration data
 * transfer session by returning a FD, in this case the migration data will
 * flow over the FD using read() and write() as discussed below.
 *
 * There are 5 states to support VFIO_MIGRATION_STOP_COPY:
 *  RUNNING - The device is running normally
 *  STOP - The device does not change the internal or external state
 *  STOP_COPY - The device internal state can be read out
 *  RESUMING - The device is stopped and is loading a new internal state
 *  ERROR - The device has failed and must be reset
 *
 * And optional states to support VFIO_MIGRATION_P2P:
 *  RUNNING_P2P - RUNNING, except the device cannot do peer to peer DMA
 * And VFIO_MIGRATION_PRE_COPY:
 *  PRE_COPY - The device is running normally but tracking internal state
 *             changes
 * And VFIO_MIGRATION_P2P | VFIO_MIGRATION_PRE_COPY:
 *  PRE_COPY_P2P - PRE_COPY, except the device cannot do peer to peer DMA
 *
 * The FSM takes actions on the arcs between FSM states. The driver implements
 * the following behavior for the FSM arcs:
 *
 * RUNNING_P2P -> STOP
 * STOP_COPY -> STOP
 *   While in STOP the device must stop the operation of the device. The device
 *   must not generate interrupts, DMA, or any other change to external state.
 *   It must not change its internal state. When stopped the device and kernel
 *   migration driver must accept and respond to interaction to support external
 *   subsystems in the STOP state, for example PCI MSI-X and PCI config space.
 *   Failure by the user to restrict device access while in STOP must not result
 *   in error conditions outside the user context (ex. host system faults).
 *
 *   The STOP_COPY arc will terminate a data transfer session.
 *
 * RESUMING -> STOP
 *   Leaving RESUMING terminates a data transfer session and indicates the
 *   device should complete processing of the data delivered by write(). The
 *   kernel migration driver should complete the incorporation of data written
 *   to the data transfer FD into the device internal state and perform
 *   final validity and consistency checking of the new device state. If the
 *   user provided data is found to be incomplete, inconsistent, or otherwise
 *   invalid, the migration driver must fail the SET_STATE ioctl and
 *   optionally go to the ERROR state as described below.
 *
 *   While in STOP the device has the same behavior as other STOP states
 *   described above.
 *
 *   To abort a RESUMING session the device must be reset.
 *
 * PRE_COPY -> RUNNING
 * RUNNING_P2P -> RUNNING
 *   While in RUNNING the device is fully operational, the device may generate
 *   interrupts, DMA, respond to MMIO, all vfio device regions are functional,
 *   and the device may advance its internal state.
 *
 *   The PRE_COPY arc will terminate a data transfer session.
 *
 * PRE_COPY_P2P -> RUNNING_P2P
 * RUNNING -> RUNNING_P2P
 * STOP -> RUNNING_P2P
 *   While in RUNNING_P2P the device is partially running in the P2P quiescent
 *   state defined below.
 *
 *   The PRE_COPY_P2P arc will terminate a data transfer session.
 *
 * RUNNING -> PRE_COPY
 * RUNNING_P2P -> PRE_COPY_P2P
 * STOP -> STOP_COPY
 *   PRE_COPY, PRE_COPY_P2P and STOP_COPY form the "saving group" of states
 *   which share a data transfer session. Moving between these states alters
 *   what is streamed in session, but does not terminate or otherwise affect
 *   the associated fd.
 *
 *   These arcs begin the process of saving the device state and will return a
 *   new data_fd. The migration driver may perform actions such as enabling
 *   dirty logging of device state when entering PRE_COPY or PER_COPY_P2P.
 *
 *   Each arc does not change the device operation, the device remains
 *   RUNNING, P2P quiesced or in STOP. The STOP_COPY state is described below
 *   in PRE_COPY_P2P -> STOP_COPY.
 *
 * PRE_COPY -> PRE_COPY_P2P
 *   Entering PRE_COPY_P2P continues all the behaviors of PRE_COPY above.
 *   However, while in the PRE_COPY_P2P state, the device is partially running
 *   in the P2P quiescent state defined below, like RUNNING_P2P.
 *
 * PRE_COPY_P2P -> PRE_COPY
 *   This arc allows returning the device to a full RUNNING behavior while
 *   continuing all the behaviors of PRE_COPY.
 *
 * PRE_COPY_P2P -> STOP_COPY
 *   While in the STOP_COPY state the device has the same behavior as STOP
 *   with the addition that the data transfers session continues to stream the
 *   migration state. End of stream on the FD indicates the entire device
 *   state has been transferred.
 *
 *   The user should take steps to restrict access to vfio device regions while
 *   the device is in STOP_COPY or risk corruption of the device migration data
 *   stream.
 *
 * STOP -> RESUMING
 *   Entering the RESUMING state starts a process of restoring the device state
 *   and will return a new data_fd. The data stream fed into the data_fd should
 *   be taken from the data transfer output of a single FD during saving from
 *   a compatible device. The migration driver may alter/reset the internal
 *   device state for this arc if required to prepare the device to receive the
 *   migration data.
 *
 * STOP_COPY -> PRE_COPY
 * STOP_COPY -> PRE_COPY_P2P
 *   These arcs are not permitted and return error if requested. Future
 *   revisions of this API may define behaviors for these arcs, in this case
 *   support will be discoverable by a new flag in
 *   VFIO_DEVICE_FEATURE_MIGRATION.
 *
 * any -> ERROR
 *   ERROR cannot be specified as a device state, however any transition request
 *   can be failed with an errno return and may then move the device_state into
 *   ERROR. In this case the device was unable to execute the requested arc and
 *   was also unable to restore the device to any valid device_state.
 *   To recover from ERROR VFIO_DEVICE_RESET must be used to return the
 *   device_state back to RUNNING.
 *
 * The optional peer to peer (P2P) quiescent state is intended to be a quiescent
 * state for the device for the purposes of managing multiple devices within a
 * user context where peer-to-peer DMA between devices may be active. The
 * RUNNING_P2P and PRE_COPY_P2P states must prevent the device from initiating
 * any new P2P DMA transactions. If the device can identify P2P transactions
 * then it can stop only P2P DMA, otherwise it must stop all DMA. The migration
 * driver must complete any such outstanding operations prior to completing the
 * FSM arc into a P2P state. For the purpose of specification the states
 * behave as though the device was fully running if not supported. Like while in
 * STOP or STOP_COPY the user must not touch the device, otherwise the state
 * can be exited.
 *
 * The remaining possible transitions are interpreted as combinations of the
 * above FSM arcs. As there are multiple paths through the FSM arcs the path
 * should be selected based on the following rules:
 *   - Select the shortest path.
 *   - The path cannot have saving group states as interior arcs, only
 *     starting/end states.
 * Refer to vfio_mig_get_next_state() for the result of the algorithm.
 *
 * The automatic transit through the FSM arcs that make up the combination
 * transition is invisible to the user. When working with combination arcs the
 * user may see any step along the path in the device_state if SET_STATE
 * fails. When handling these types of errors users should anticipate future
 * revisions of this protocol using new states and those states becoming
 * visible in this case.
 *
 * The optional states cannot be used with SET_STATE if the device does not
 * support them. The user can discover if these states are supported by using
 * VFIO_DEVICE_FEATURE_MIGRATION. By using combination transitions the user can
 * avoid knowing about these optional states if the kernel driver supports them.
 *
 * Arcs touching PRE_COPY and PRE_COPY_P2P are removed if support for PRE_COPY
 * is not present.
 */
enum vfio_device_mig_state {
	VFIO_DEVICE_STATE_ERROR = 0,
	VFIO_DEVICE_STATE_STOP = 1,
	VFIO_DEVICE_STATE_RUNNING = 2,
	VFIO_DEVICE_STATE_STOP_COPY = 3,
	VFIO_DEVICE_STATE_RESUMING = 4,
	VFIO_DEVICE_STATE_RUNNING_P2P = 5,
	VFIO_DEVICE_STATE_PRE_COPY = 6,
	VFIO_DEVICE_STATE_PRE_COPY_P2P = 7,
	VFIO_DEVICE_STATE_NR,
};

/**
 * VFIO_MIG_GET_PRECOPY_INFO - _IO(VFIO_TYPE, VFIO_BASE + 21)
 *
 * This ioctl is used on the migration data FD in the precopy phase of the
 * migration data transfer. It returns an estimate of the current data sizes
 * remaining to be transferred. It allows the user to judge when it is
 * appropriate to leave PRE_COPY for STOP_COPY.
 *
 * This ioctl is valid only in PRE_COPY states and kernel driver should
 * return -EINVAL from any other migration state.
 *
 * The vfio_precopy_info data structure returned by this ioctl provides
 * estimates of data available from the device during the PRE_COPY states.
 * This estimate is split into two categories, initial_bytes and
 * dirty_bytes.
 *
 * The initial_bytes field indicates the amount of initial precopy
 * data available from the device. This field should have a non-zero initial
 * value and decrease as migration data is read from the device.
 * It is recommended to leave PRE_COPY for STOP_COPY only after this field
 * reaches zero. Leaving PRE_COPY earlier might make things slower.
 *
 * The dirty_bytes field tracks device state changes relative to data
 * previously retrieved.  This field starts at zero and may increase as
 * the internal device state is modified or decrease as that modified
 * state is read from the device.
 *
 * Userspace may use the combination of these fields to estimate the
 * potential data size available during the PRE_COPY phases, as well as
 * trends relative to the rate the device is dirtying its internal
 * state, but these fields are not required to have any bearing relative
 * to the data size available during the STOP_COPY phase.
 *
 * Drivers have a lot of flexibility in when and what they transfer during the
 * PRE_COPY phase, and how they report this from VFIO_MIG_GET_PRECOPY_INFO.
 *
 * During pre-copy the migration data FD has a temporary "end of stream" that is
 * reached when both initial_bytes and dirty_byte are zero. For instance, this
 * may indicate that the device is idle and not currently dirtying any internal
 * state. When read() is done on this temporary end of stream the kernel driver
 * should return ENOMSG from read(). Userspace can wait for more data (which may
 * never come) by using poll.
 *
 * Once in STOP_COPY the migration data FD has a permanent end of stream
 * signaled in the usual way by read() always returning 0 and poll always
 * returning readable. ENOMSG may not be returned in STOP_COPY.
 * Support for this ioctl is mandatory if a driver claims to support
 * VFIO_MIGRATION_PRE_COPY.
 *
 * Return: 0 on success, -1 and errno set on failure.
 */
struct vfio_precopy_info {
	__u32 argsz;
	__u32 flags;
	__aligned_u64 initial_bytes;
	__aligned_u64 dirty_bytes;
};

#define VFIO_MIG_GET_PRECOPY_INFO _IO(VFIO_TYPE, VFIO_BASE + 21)

/*
 * Upon VFIO_DEVICE_FEATURE_SET, allow the device to be moved into a low power
 * state with the platform-based power management.  Device use of lower power
 * states depends on factors managed by the runtime power management core,
 * including system level support and coordinating support among dependent
 * devices.  Enabling device low power entry does not guarantee lower power
 * usage by the device, nor is a mechanism provided through this feature to
 * know the current power state of the device.  If any device access happens
 * (either from the host or through the vfio uAPI) when the device is in the
 * low power state, then the host will move the device out of the low power
 * state as necessary prior to the access.  Once the access is completed, the
 * device may re-enter the low power state.  For single shot low power support
 * with wake-up notification, see
 * VFIO_DEVICE_FEATURE_LOW_POWER_ENTRY_WITH_WAKEUP below.  Access to mmap'd
 * device regions is disabled on LOW_POWER_ENTRY and may only be resumed after
 * calling LOW_POWER_EXIT.
 */
#define VFIO_DEVICE_FEATURE_LOW_POWER_ENTRY 3

/*
 * This device feature has the same behavior as
 * VFIO_DEVICE_FEATURE_LOW_POWER_ENTRY with the exception that the user
 * provides an eventfd for wake-up notification.  When the device moves out of
 * the low power state for the wake-up, the host will not allow the device to
 * re-enter a low power state without a subsequent user call to one of the low
 * power entry device feature IOCTLs.  Access to mmap'd device regions is
 * disabled on LOW_POWER_ENTRY_WITH_WAKEUP and may only be resumed after the
 * low power exit.  The low power exit can happen either through LOW_POWER_EXIT
 * or through any other access (where the wake-up notification has been
 * generated).  The access to mmap'd device regions will not trigger low power
 * exit.
 *
 * The notification through the provided eventfd will be generated only when
 * the device has entered and is resumed from a low power state after
 * calling this device feature IOCTL.  A device that has not entered low power
 * state, as managed through the runtime power management core, will not
 * generate a notification through the provided eventfd on access.  Calling the
 * LOW_POWER_EXIT feature is optional in the case where notification has been
 * signaled on the provided eventfd that a resume from low power has occurred.
 */
struct vfio_device_low_power_entry_with_wakeup {
	__s32 wakeup_eventfd;
	__u32 reserved;
};

#define VFIO_DEVICE_FEATURE_LOW_POWER_ENTRY_WITH_WAKEUP 4

/*
 * Upon VFIO_DEVICE_FEATURE_SET, disallow use of device low power states as
 * previously enabled via VFIO_DEVICE_FEATURE_LOW_POWER_ENTRY or
 * VFIO_DEVICE_FEATURE_LOW_POWER_ENTRY_WITH_WAKEUP device features.
 * This device feature IOCTL may itself generate a wakeup eventfd notification
 * in the latter case if the device had previously entered a low power state.
 */
#define VFIO_DEVICE_FEATURE_LOW_POWER_EXIT 5

/*
 * Upon VFIO_DEVICE_FEATURE_SET start/stop device DMA logging.
 * VFIO_DEVICE_FEATURE_PROBE can be used to detect if the device supports
 * DMA logging.
 *
 * DMA logging allows a device to internally record what DMAs the device is
 * initiating and report them back to userspace. It is part of the VFIO
 * migration infrastructure that allows implementing dirty page tracking
 * during the pre copy phase of live migration. Only DMA WRITEs are logged,
 * and this API is not connected to VFIO_DEVICE_FEATURE_MIG_DEVICE_STATE.
 *
 * When DMA logging is started a range of IOVAs to monitor is provided and the
 * device can optimize its logging to cover only the IOVA range given. Each
 * DMA that the device initiates inside the range will be logged by the device
 * for later retrieval.
 *
 * page_size is an input that hints what tracking granularity the device
 * should try to achieve. If the device cannot do the hinted page size then
 * it's the driver choice which page size to pick based on its support.
 * On output the device will return the page size it selected.
 *
 * ranges is a pointer to an array of
 * struct vfio_device_feature_dma_logging_range.
 *
 * The core kernel code guarantees to support by minimum num_ranges that fit
 * into a single kernel page. User space can try higher values but should give
 * up if the above can't be achieved as of some driver limitations.
 *
 * A single call to start device DMA logging can be issued and a matching stop
 * should follow at the end. Another start is not allowed in the meantime.
 */
struct vfio_device_feature_dma_logging_control {
	__aligned_u64 page_size;
	__u32 num_ranges;
	__u32 __reserved;
	__aligned_u64 ranges;
};

struct vfio_device_feature_dma_logging_range {
	__aligned_u64 iova;
	__aligned_u64 length;
};

#define VFIO_DEVICE_FEATURE_DMA_LOGGING_START 6

/*
 * Upon VFIO_DEVICE_FEATURE_SET stop device DMA logging that was started
 * by VFIO_DEVICE_FEATURE_DMA_LOGGING_START
 */
#define VFIO_DEVICE_FEATURE_DMA_LOGGING_STOP 7

/*
 * Upon VFIO_DEVICE_FEATURE_GET read back and clear the device DMA log
 *
 * Query the device's DMA log for written pages within the given IOVA range.
 * During querying the log is cleared for the IOVA range.
 *
 * bitmap is a pointer to an array of u64s that will hold the output bitmap
 * with 1 bit reporting a page_size unit of IOVA. The mapping of IOVA to bits
 * is given by:
 *  bitmap[(addr - iova)/page_size] & (1ULL << (addr % 64))
 *
 * The input page_size can be any power of two value and does not have to
 * match the value given to VFIO_DEVICE_FEATURE_DMA_LOGGING_START. The driver
 * will format its internal logging to match the reporting page size, possibly
 * by replicating bits if the internal page size is lower than requested.
 *
 * The LOGGING_REPORT will only set bits in the bitmap and never clear or
 * perform any initialization of the user provided bitmap.
 *
 * If any error is returned userspace should assume that the dirty log is
 * corrupted. Error recovery is to consider all memory dirty and try to
 * restart the dirty tracking, or to abort/restart the whole migration.
 *
 * If DMA logging is not enabled, an error will be returned.
 *
 */
struct vfio_device_feature_dma_logging_report {
	__aligned_u64 iova;
	__aligned_u64 length;
	__aligned_u64 page_size;
	__aligned_u64 bitmap;
};

#define VFIO_DEVICE_FEATURE_DMA_LOGGING_REPORT 8

/*
 * Upon VFIO_DEVICE_FEATURE_GET read back the estimated data length that will
 * be required to complete stop copy.
 *
 * Note: Can be called on each device state.
 */

struct vfio_device_feature_mig_data_size {
	__aligned_u64 stop_copy_length;
};

#define VFIO_DEVICE_FEATURE_MIG_DATA_SIZE 9

/**
 * Upon VFIO_DEVICE_FEATURE_SET, set or clear the BUS mastering for the device
 * based on the operation specified in op flag.
 *
 * The functionality is incorporated for devices that needs bus master control,
 * but the in-band device interface lacks the support. Consequently, it is not
 * applicable to PCI devices, as bus master control for PCI devices is managed
 * in-band through the configuration space. At present, this feature is supported
 * only for CDX devices.
 * When the device's BUS MASTER setting is configured as CLEAR, it will result in
 * blocking all incoming DMA requests from the device. On the other hand, configuring
 * the device's BUS MASTER setting as SET (enable) will grant the device the
 * capability to perform DMA to the host memory.
 */
struct vfio_device_feature_bus_master {
	__u32 op;
#define		VFIO_DEVICE_FEATURE_CLEAR_MASTER	0	/* Clear Bus Master */
#define		VFIO_DEVICE_FEATURE_SET_MASTER		1	/* Set Bus Master */
};
#define VFIO_DEVICE_FEATURE_BUS_MASTER 10

/* -------- API for Type1 VFIO IOMMU -------- */

/**
 * VFIO_IOMMU_GET_INFO - _IOR(VFIO_TYPE, VFIO_BASE + 12, struct vfio_iommu_info)
 *
 * Retrieve information about the IOMMU object. Fills in provided
 * struct vfio_iommu_info. Caller sets argsz.
 *
 * XXX Should we do these by CHECK_EXTENSION too?
 */
struct vfio_iommu_type1_info {
	__u32	argsz;
	__u32	flags;
#define VFIO_IOMMU_INFO_PGSIZES (1 << 0)	/* supported page sizes info */
#define VFIO_IOMMU_INFO_CAPS	(1 << 1)	/* Info supports caps */
	__aligned_u64	iova_pgsizes;		/* Bitmap of supported page sizes */
	__u32   cap_offset;	/* Offset within info struct of first cap */
	__u32   pad;
};

/*
 * The IOVA capability allows to report the valid IOVA range(s)
 * excluding any non-relaxable reserved regions exposed by
 * devices attached to the container. Any DMA map attempt
 * outside the valid iova range will return error.
 *
 * The structures below define version 1 of this capability.
 */
#define VFIO_IOMMU_TYPE1_INFO_CAP_IOVA_RANGE  1

struct vfio_iova_range {
	__u64	start;
	__u64	end;
};

struct vfio_iommu_type1_info_cap_iova_range {
	struct	vfio_info_cap_header header;
	__u32	nr_iovas;
	__u32	reserved;
	struct	vfio_iova_range iova_ranges[];
};

/*
 * The migration capability allows to report supported features for migration.
 *
 * The structures below define version 1 of this capability.
 *
 * The existence of this capability indicates that IOMMU kernel driver supports
 * dirty page logging.
 *
 * pgsize_bitmap: Kernel driver returns bitmap of supported page sizes for dirty
 * page logging.
 * max_dirty_bitmap_size: Kernel driver returns maximum supported dirty bitmap
 * size in bytes that can be used by user applications when getting the dirty
 * bitmap.
 */
#define VFIO_IOMMU_TYPE1_INFO_CAP_MIGRATION  2

struct vfio_iommu_type1_info_cap_migration {
	struct	vfio_info_cap_header header;
	__u32	flags;
	__u64	pgsize_bitmap;
	__u64	max_dirty_bitmap_size;		/* in bytes */
};

/*
 * The DMA available capability allows to report the current number of
 * simultaneously outstanding DMA mappings that are allowed.
 *
 * The structure below defines version 1 of this capability.
 *
 * avail: specifies the current number of outstanding DMA mappings allowed.
 */
#define VFIO_IOMMU_TYPE1_INFO_DMA_AVAIL 3

struct vfio_iommu_type1_info_dma_avail {
	struct	vfio_info_cap_header header;
	__u32	avail;
};

#define VFIO_IOMMU_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)

/**
 * VFIO_IOMMU_MAP_DMA - _IOW(VFIO_TYPE, VFIO_BASE + 13, struct vfio_dma_map)
 *
 * Map process virtual addresses to IO virtual addresses using the
 * provided struct vfio_dma_map. Caller sets argsz. READ &/ WRITE required.
 *
 * If flags & VFIO_DMA_MAP_FLAG_VADDR, update the base vaddr for iova. The vaddr
 * must have previously been invalidated with VFIO_DMA_UNMAP_FLAG_VADDR.  To
 * maintain memory consistency within the user application, the updated vaddr
 * must address the same memory object as originally mapped.  Failure to do so
 * will result in user memory corruption and/or device misbehavior.  iova and
 * size must match those in the original MAP_DMA call.  Protection is not
 * changed, and the READ & WRITE flags must be 0.
 */
struct vfio_iommu_type1_dma_map {
	__u32	argsz;
	__u32	flags;
#define VFIO_DMA_MAP_FLAG_READ (1 << 0)		/* readable from device */
#define VFIO_DMA_MAP_FLAG_WRITE (1 << 1)	/* writable from device */
#define VFIO_DMA_MAP_FLAG_VADDR (1 << 2)
	__u64	vaddr;				/* Process virtual address */
	__u64	iova;				/* IO virtual address */
	__u64	size;				/* Size of mapping (bytes) */
};

#define VFIO_IOMMU_MAP_DMA _IO(VFIO_TYPE, VFIO_BASE + 13)

struct vfio_bitmap {
	__u64        pgsize;	/* page size for bitmap in bytes */
	__u64        size;	/* in bytes */
	__u64 *data;	/* one bit per page */
};

/**
 * VFIO_IOMMU_UNMAP_DMA - _IOWR(VFIO_TYPE, VFIO_BASE + 14,
 *							struct vfio_dma_unmap)
 *
 * Unmap IO virtual addresses using the provided struct vfio_dma_unmap.
 * Caller sets argsz.  The actual unmapped size is returned in the size
 * field.  No guarantee is made to the user that arbitrary unmaps of iova
 * or size different from those used in the original mapping call will
 * succeed.
 *
 * VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP should be set to get the dirty bitmap
 * before unmapping IO virtual addresses. When this flag is set, the user must
 * provide a struct vfio_bitmap in data[]. User must provide zero-allocated
 * memory via vfio_bitmap.data and its size in the vfio_bitmap.size field.
 * A bit in the bitmap represents one page, of user provided page size in
 * vfio_bitmap.pgsize field, consecutively starting from iova offset. Bit set
 * indicates that the page at that offset from iova is dirty. A Bitmap of the
 * pages in the range of unmapped size is returned in the user-provided
 * vfio_bitmap.data.
 *
 * If flags & VFIO_DMA_UNMAP_FLAG_ALL, unmap all addresses.  iova and size
 * must be 0.  This cannot be combined with the get-dirty-bitmap flag.
 *
 * If flags & VFIO_DMA_UNMAP_FLAG_VADDR, do not unmap, but invalidate host
 * virtual addresses in the iova range.  DMA to already-mapped pages continues.
 * Groups may not be added to the container while any addresses are invalid.
 * This cannot be combined with the get-dirty-bitmap flag.
 */
struct vfio_iommu_type1_dma_unmap {
	__u32	argsz;
	__u32	flags;
#define VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP (1 << 0)
#define VFIO_DMA_UNMAP_FLAG_ALL		     (1 << 1)
#define VFIO_DMA_UNMAP_FLAG_VADDR	     (1 << 2)
	__u64	iova;				/* IO virtual address */
	__u64	size;				/* Size of mapping (bytes) */
	__u8    data[];
};

#define VFIO_IOMMU_UNMAP_DMA _IO(VFIO_TYPE, VFIO_BASE + 14)

/*
 * IOCTLs to enable/disable IOMMU container usage.
 * No parameters are supported.
 */
#define VFIO_IOMMU_ENABLE	_IO(VFIO_TYPE, VFIO_BASE + 15)
#define VFIO_IOMMU_DISABLE	_IO(VFIO_TYPE, VFIO_BASE + 16)

/**
 * VFIO_IOMMU_DIRTY_PAGES - _IOWR(VFIO_TYPE, VFIO_BASE + 17,
 *                                     struct vfio_iommu_type1_dirty_bitmap)
 * IOCTL is used for dirty pages logging.
 * Caller should set flag depending on which operation to perform, details as
 * below:
 *
 * Calling the IOCTL with VFIO_IOMMU_DIRTY_PAGES_FLAG_START flag set, instructs
 * the IOMMU driver to log pages that are dirtied or potentially dirtied by
 * the device; designed to be used when a migration is in progress. Dirty pages
 * are logged until logging is disabled by user application by calling the IOCTL
 * with VFIO_IOMMU_DIRTY_PAGES_FLAG_STOP flag.
 *
 * Calling the IOCTL with VFIO_IOMMU_DIRTY_PAGES_FLAG_STOP flag set, instructs
 * the IOMMU driver to stop logging dirtied pages.
 *
 * Calling the IOCTL with VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP flag set
 * returns the dirty pages bitmap for IOMMU container for a given IOVA range.
 * The user must specify the IOVA range and the pgsize through the structure
 * vfio_iommu_type1_dirty_bitmap_get in the data[] portion. This interface
 * supports getting a bitmap of the smallest supported pgsize only and can be
 * modified in future to get a bitmap of any specified supported pgsize. The
 * user must provide a zeroed memory area for the bitmap memory and specify its
 * size in bitmap.size. One bit is used to represent one page consecutively
 * starting from iova offset. The user should provide page size in bitmap.pgsize
 * field. A bit set in the bitmap indicates that the page at that offset from
 * iova is dirty. The caller must set argsz to a value including the size of
 * structure vfio_iommu_type1_dirty_bitmap_get, but excluding the size of the
 * actual bitmap. If dirty pages logging is not enabled, an error will be
 * returned.
 *
 * Only one of the flags _START, _STOP and _GET may be specified at a time.
 *
 */
struct vfio_iommu_type1_dirty_bitmap {
	__u32        argsz;
	__u32        flags;
#define VFIO_IOMMU_DIRTY_PAGES_FLAG_START	(1 << 0)
#define VFIO_IOMMU_DIRTY_PAGES_FLAG_STOP	(1 << 1)
#define VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP	(1 << 2)
	__u8         data[];
};

struct vfio_iommu_type1_dirty_bitmap_get {
	__u64              iova;	/* IO virtual address */
	__u64              size;	/* Size of iova range */
	struct vfio_bitmap bitmap;
};

#define VFIO_IOMMU_DIRTY_PAGES             _IO(VFIO_TYPE, VFIO_BASE + 17)

/* -------- Additional API for SPAPR TCE (Server POWERPC) IOMMU -------- */

/*
 * The SPAPR TCE DDW info struct provides the information about
 * the details of Dynamic DMA window capability.
 *
 * @pgsizes contains a page size bitmask, 4K/64K/16M are supported.
 * @max_dynamic_windows_supported tells the maximum number of windows
 * which the platform can create.
 * @levels tells the maximum number of levels in multi-level IOMMU tables;
 * this allows splitting a table into smaller chunks which reduces
 * the amount of physically contiguous memory required for the table.
 */
struct vfio_iommu_spapr_tce_ddw_info {
	__u64 pgsizes;			/* Bitmap of supported page sizes */
	__u32 max_dynamic_windows_supported;
	__u32 levels;
};

/*
 * The SPAPR TCE info struct provides the information about the PCI bus
 * address ranges available for DMA, these values are programmed into
 * the hardware so the guest has to know that information.
 *
 * The DMA 32 bit window start is an absolute PCI bus address.
 * The IOVA address passed via map/unmap ioctls are absolute PCI bus
 * addresses too so the window works as a filter rather than an offset
 * for IOVA addresses.
 *
 * Flags supported:
 * - VFIO_IOMMU_SPAPR_INFO_DDW: informs the userspace that dynamic DMA windows
 *   (DDW) support is present. @ddw is only supported when DDW is present.
 */
struct vfio_iommu_spapr_tce_info {
	__u32 argsz;
	__u32 flags;
#define VFIO_IOMMU_SPAPR_INFO_DDW	(1 << 0)	/* DDW supported */
	__u32 dma32_window_start;	/* 32 bit window start (bytes) */
	__u32 dma32_window_size;	/* 32 bit window size (bytes) */
	struct vfio_iommu_spapr_tce_ddw_info ddw;
};

#define VFIO_IOMMU_SPAPR_TCE_GET_INFO	_IO(VFIO_TYPE, VFIO_BASE + 12)

/*
 * EEH PE operation struct provides ways to:
 * - enable/disable EEH functionality;
 * - unfreeze IO/DMA for frozen PE;
 * - read PE state;
 * - reset PE;
 * - configure PE;
 * - inject EEH error.
 */
struct vfio_eeh_pe_err {
	__u32 type;
	__u32 func;
	__u64 addr;
	__u64 mask;
};

struct vfio_eeh_pe_op {
	__u32 argsz;
	__u32 flags;
	__u32 op;
	union {
		struct vfio_eeh_pe_err err;
	};
};

#define VFIO_EEH_PE_DISABLE		0	/* Disable EEH functionality */
#define VFIO_EEH_PE_ENABLE		1	/* Enable EEH functionality  */
#define VFIO_EEH_PE_UNFREEZE_IO		2	/* Enable IO for frozen PE   */
#define VFIO_EEH_PE_UNFREEZE_DMA	3	/* Enable DMA for frozen PE  */
#define VFIO_EEH_PE_GET_STATE		4	/* PE state retrieval        */
#define  VFIO_EEH_PE_STATE_NORMAL	0	/* PE in functional state    */
#define  VFIO_EEH_PE_STATE_RESET	1	/* PE reset in progress      */
#define  VFIO_EEH_PE_STATE_STOPPED	2	/* Stopped DMA and IO        */
#define  VFIO_EEH_PE_STATE_STOPPED_DMA	4	/* Stopped DMA only          */
#define  VFIO_EEH_PE_STATE_UNAVAIL	5	/* State unavailable         */
#define VFIO_EEH_PE_RESET_DEACTIVATE	5	/* Deassert PE reset         */
#define VFIO_EEH_PE_RESET_HOT		6	/* Assert hot reset          */
#define VFIO_EEH_PE_RESET_FUNDAMENTAL	7	/* Assert fundamental reset  */
#define VFIO_EEH_PE_CONFIGURE		8	/* PE configuration          */
#define VFIO_EEH_PE_INJECT_ERR		9	/* Inject EEH error          */

#define VFIO_EEH_PE_OP			_IO(VFIO_TYPE, VFIO_BASE + 21)

/**
 * VFIO_IOMMU_SPAPR_REGISTER_MEMORY - _IOW(VFIO_TYPE, VFIO_BASE + 17, struct vfio_iommu_spapr_register_memory)
 *
 * Registers user space memory where DMA is allowed. It pins
 * user pages and does the locked memory accounting so
 * subsequent VFIO_IOMMU_MAP_DMA/VFIO_IOMMU_UNMAP_DMA calls
 * get faster.
 */
struct vfio_iommu_spapr_register_memory {
	__u32	argsz;
	__u32	flags;
	__u64	vaddr;				/* Process virtual address */
	__u64	size;				/* Size of mapping (bytes) */
};
#define VFIO_IOMMU_SPAPR_REGISTER_MEMORY	_IO(VFIO_TYPE, VFIO_BASE + 17)

/**
 * VFIO_IOMMU_SPAPR_UNREGISTER_MEMORY - _IOW(VFIO_TYPE, VFIO_BASE + 18, struct vfio_iommu_spapr_register_memory)
 *
 * Unregisters user space memory registered with
 * VFIO_IOMMU_SPAPR_REGISTER_MEMORY.
 * Uses vfio_iommu_spapr_register_memory for parameters.
 */
#define VFIO_IOMMU_SPAPR_UNREGISTER_MEMORY	_IO(VFIO_TYPE, VFIO_BASE + 18)

/**
 * VFIO_IOMMU_SPAPR_TCE_CREATE - _IOWR(VFIO_TYPE, VFIO_BASE + 19, struct vfio_iommu_spapr_tce_create)
 *
 * Creates an additional TCE table and programs it (sets a new DMA window)
 * to every IOMMU group in the container. It receives page shift, window
 * size and number of levels in the TCE table being created.
 *
 * It allocates and returns an offset on a PCI bus of the new DMA window.
 */
struct vfio_iommu_spapr_tce_create {
	__u32 argsz;
	__u32 flags;
	/* in */
	__u32 page_shift;
	__u32 __resv1;
	__u64 window_size;
	__u32 levels;
	__u32 __resv2;
	/* out */
	__u64 start_addr;
};
#define VFIO_IOMMU_SPAPR_TCE_CREATE	_IO(VFIO_TYPE, VFIO_BASE + 19)

/**
 * VFIO_IOMMU_SPAPR_TCE_REMOVE - _IOW(VFIO_TYPE, VFIO_BASE + 20, struct vfio_iommu_spapr_tce_remove)
 *
 * Unprograms a TCE table from all groups in the container and destroys it.
 * It receives a PCI bus offset as a window id.
 */
struct vfio_iommu_spapr_tce_remove {
	__u32 argsz;
	__u32 flags;
	/* in */
	__u64 start_addr;
};
#define VFIO_IOMMU_SPAPR_TCE_REMOVE	_IO(VFIO_TYPE, VFIO_BASE + 20)

/* ***************************************************************** */

#endif /* VFIO_H */

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