golden hour

/usr/include/linux

File/Folder	Size	Actions
a.out.h	6.73 KB
acct.h	3.82 KB
acrn.h	16.29 KB
adb.h	1.11 KB
adfs_fs.h	993 B
affs_hardblocks.h	1.54 KB
agpgart.h	3.85 KB
aio_abi.h	3.32 KB
am437x-vpfe.h	3.59 KB
android	-
apm_bios.h	3.6 KB
arcfb.h	213 B
arm_sdei.h	2.69 KB
aspeed-lpc-ctrl.h	1.74 KB
aspeed-p2a-ctrl.h	1.86 KB
atalk.h	1023 B
atm.h	7.7 KB
atm_eni.h	648 B
atm_he.h	406 B
atm_idt77105.h	955 B
atm_nicstar.h	1.25 KB
atm_tcp.h	1.58 KB
atm_zatm.h	1.5 KB
atmapi.h	952 B
atmarp.h	1.27 KB
atmbr2684.h	3.19 KB
atmclip.h	576 B
atmdev.h	7.5 KB
atmioc.h	1.61 KB
atmlec.h	2.33 KB
atmmpc.h	4.13 KB
atmppp.h	639 B
atmsap.h	4.85 KB
atmsvc.h	1.81 KB
audit.h	21.06 KB
auto_dev-ioctl.h	4.87 KB
auto_fs.h	6.28 KB
auto_fs4.h	451 B
auxvec.h	1.56 KB
ax25.h	2.76 KB
batadv_packet.h	19.87 KB
batman_adv.h	16.49 KB
baycom.h	883 B
bcm933xx_hcs.h	419 B
bfs_fs.h	1.86 KB
binfmts.h	776 B
bits.h	447 B
blkpg.h	904 B
blktrace_api.h	4.59 KB
blkzoned.h	6.34 KB
bpf.h	272.11 KB
bpf_common.h	1.33 KB
bpf_perf_event.h	529 B
bpfilter.h	465 B
bpqether.h	981 B
bsg.h	2.44 KB
bt-bmc.h	572 B
btf.h	5.46 KB
btrfs.h	29.85 KB
btrfs_tree.h	25.22 KB
byteorder	-
cachefiles.h	1.61 KB
caif	-
can	-
can.h	11.03 KB
capability.h	13.17 KB
capi.h	3.05 KB
cciss_defs.h	3.2 KB
cciss_ioctl.h	2.7 KB
ccs.h	767 B
cdrom.h	28.87 KB
cec-funcs.h	53.14 KB
cec.h	40.47 KB
cfm_bridge.h	1.42 KB
cgroupstats.h	2.17 KB
chio.h	5.16 KB
cifs	-
close_range.h	377 B
cm4000_cs.h	1.76 KB
cn_proc.h	4.05 KB
coda.h	17.79 KB
coff.h	12.25 KB
connector.h	2.2 KB
const.h	987 B
coresight-stm.h	747 B
cramfs_fs.h	3.47 KB
cryptouser.h	5.2 KB
cuda.h	905 B
cxl_mem.h	7.73 KB
cycx_cfm.h	2.92 KB
dcbnl.h	24.7 KB
dccp.h	6.29 KB
devlink.h	22.3 KB
dlm.h	2.49 KB
dlm_device.h	2.48 KB
dlm_netlink.h	1.13 KB
dlm_plock.h	894 B
dlmconstants.h	4.96 KB
dm-ioctl.h	11.48 KB
dm-log-userspace.h	14.83 KB
dma-buf.h	5.12 KB
dma-heap.h	1.36 KB
dn.h	4.53 KB
dns_resolver.h	3.86 KB
dpll.h	7.19 KB
dqblk_xfs.h	9.17 KB
dvb	-
edd.h	5.47 KB
efs_fs_sb.h	2.17 KB
elf-em.h	2.57 KB
elf-fdpic.h	1.1 KB
elf.h	14.69 KB
errno.h	23 B
errqueue.h	1.94 KB
erspan.h	1.03 KB
ethtool.h	100.09 KB
ethtool_netlink.h	29.87 KB
eventfd.h	264 B
eventpoll.h	2.84 KB
f2fs.h	3.22 KB
fadvise.h	842 B
falloc.h	3.5 KB
fanotify.h	6.64 KB
fb.h	16.09 KB
fcntl.h	4.22 KB
fd.h	11.83 KB
fdreg.h	5.24 KB
fib_rules.h	1.99 KB
fiemap.h	2.71 KB
filter.h	2.16 KB
firewire-cdev.h	43.2 KB
firewire-constants.h	3.16 KB
fou.h	819 B
fpga-dfl.h	8.52 KB
fs.h	12.88 KB
fscrypt.h	6.41 KB
fsi.h	2.2 KB
fsl_hypervisor.h	7.13 KB
fsl_mc.h	734 B
fsmap.h	4.29 KB
fsverity.h	3.11 KB
fuse.h	25.36 KB
futex.h	5.98 KB
gameport.h	897 B
gen_stats.h	1.49 KB
genetlink.h	2.19 KB
genwqe	-
gfs2_ondisk.h	14.43 KB
gpio.h	19.46 KB
gsmmux.h	4.4 KB
gtp.h	734 B
handshake.h	1.61 KB
hash_info.h	971 B
hdlc	-
hdlc.h	637 B
hdlcdrv.h	2.84 KB
hdreg.h	22.17 KB
hid.h	2.04 KB
hiddev.h	6.2 KB
hidraw.h	1.95 KB
hpet.h	743 B
hsi	-
hsr_netlink.h	1.08 KB
hw_breakpoint.h	742 B
hyperv.h	10.89 KB
i2c-dev.h	1.83 KB
i2c.h	6.73 KB
i2o-dev.h	11.28 KB
i8k.h	1.49 KB
icmp.h	4.67 KB
icmpv6.h	4.2 KB
idxd.h	9.11 KB
if.h	10.67 KB
if_addr.h	1.84 KB
if_addrlabel.h	721 B
if_alg.h	1.53 KB
if_arcnet.h	3.63 KB
if_arp.h	6.41 KB
if_bonding.h	5.02 KB
if_bridge.h	20.18 KB
if_cablemodem.h	986 B
if_eql.h	1.32 KB
if_ether.h	8.21 KB
if_fc.h	1.7 KB
if_fddi.h	4.27 KB
if_hippi.h	4.14 KB
if_infiniband.h	1.22 KB
if_link.h	52.83 KB
if_ltalk.h	210 B
if_macsec.h	6.35 KB
if_packet.h	7.99 KB
if_phonet.h	424 B
if_plip.h	660 B
if_ppp.h	29 B
if_pppol2tp.h	3.23 KB
if_pppox.h	4.76 KB
if_slip.h	872 B
if_team.h	2.54 KB
if_tun.h	4 KB
if_tunnel.h	5.36 KB
if_vlan.h	1.79 KB
if_x25.h	881 B
if_xdp.h	4.89 KB
ife.h	351 B
igmp.h	2.99 KB
iio	-
ila.h	1.22 KB
in.h	10.15 KB
in6.h	7.36 KB
in_route.h	936 B
inet_diag.h	4.9 KB
inotify.h	3.21 KB
input-event-codes.h	29.5 KB
input.h	15.84 KB
io_uring.h	20.4 KB
ioctl.h	163 B
iommufd.h	28.39 KB
ioprio.h	4.08 KB
ip.h	4.7 KB
ip6_tunnel.h	1.91 KB
ip_vs.h	13.8 KB
ipc.h	2.05 KB
ipmi.h	15.08 KB
ipmi_bmc.h	488 B
ipmi_msgdefs.h	3.35 KB
ipmi_ssif_bmc.h	441 B
ipsec.h	947 B
ipv6.h	4.07 KB
ipv6_route.h	1.86 KB
ipx.h	2.29 KB
irqnr.h	104 B
isdn	-
iso_fs.h	6.33 KB
isst_if.h	14.92 KB
ivtv.h	2.95 KB
ivtvfb.h	1.18 KB
jffs2.h	6.66 KB
joystick.h	3.35 KB
kcm.h	822 B
kcmp.h	522 B
kcov.h	1.92 KB
kd.h	6.3 KB
kdev_t.h	383 B
kernel-page-flags.h	900 B
kernel.h	194 B
kernelcapi.h	1019 B
kexec.h	2.05 KB
keyboard.h	13.14 KB
keyctl.h	5.86 KB
kfd_ioctl.h	56.75 KB
kfd_sysfs.h	5.1 KB
kvm.h	46.76 KB
kvm_para.h	1001 B
l2tp.h	5.61 KB
landlock.h	10.14 KB
libc-compat.h	8.09 KB
limits.h	937 B
lirc.h	7.95 KB
llc.h	3.09 KB
loadpin.h	834 B
loop.h	3.32 KB
lp.h	4.09 KB
lsm.h	1.51 KB
lwtunnel.h	2.31 KB
magic.h	3.73 KB
major.h	4.55 KB
map_to_7segment.h	6.45 KB
matroxfb.h	1.43 KB
max2175.h	1.01 KB
mdio.h	23.78 KB
media-bus-format.h	6.75 KB
media.h	12.46 KB
mei.h	3.4 KB
mei_uuid.h	738 B
membarrier.h	9.14 KB
memfd.h	1.43 KB
mempolicy.h	2.51 KB
meye.h	2.47 KB
mii.h	9.27 KB
minix_fs.h	2.07 KB
misc	-
mman.h	1.75 KB
mmc	-
mmtimer.h	2.07 KB
module.h	293 B
mount.h	4.9 KB
mpls.h	2.25 KB
mpls_iptunnel.h	761 B
mptcp.h	3.67 KB
mptcp_pm.h	4.3 KB
mqueue.h	2.15 KB
mroute.h	5.78 KB
mroute6.h	4.81 KB
mrp_bridge.h	1.67 KB
msdos_fs.h	6.57 KB
msg.h	3.31 KB
mtio.h	7.98 KB
nbd-netlink.h	2.35 KB
nbd.h	3.77 KB
ncsi.h	4.71 KB
ndctl.h	6.67 KB
neighbour.h	5.91 KB
net.h	2.04 KB
net_dropmon.h	2.85 KB
net_namespace.h	715 B
net_tstamp.h	5.97 KB
netconf.h	614 B
netdev.h	5.39 KB
netdevice.h	2.2 KB
netfilter	-
netfilter.h	1.69 KB
netfilter_arp	-
netfilter_arp.h	445 B
netfilter_bridge	-
netfilter_bridge.h	1.14 KB
netfilter_decnet.h	1.72 KB
netfilter_ipv4	-
netfilter_ipv4.h	1.45 KB
netfilter_ipv6	-
netfilter_ipv6.h	1.35 KB
netlink.h	12.09 KB
netlink_diag.h	1.49 KB
netrom.h	807 B
nexthop.h	3.97 KB
nfc.h	10.95 KB
nfs.h	4.36 KB
nfs2.h	1.43 KB
nfs3.h	2.4 KB
nfs4.h	6.54 KB
nfs4_mount.h	1.89 KB
nfs_fs.h	1.62 KB
nfs_idmap.h	2.19 KB
nfs_mount.h	2.09 KB
nfsacl.h	718 B
nfsd	-
nfsd_netlink.h	1.95 KB
nilfs2_api.h	7.41 KB
nilfs2_ondisk.h	17.66 KB
nitro_enclaves.h	12.85 KB
nl80211.h	338.95 KB
nsfs.h	639 B
nubus.h	8 KB
nvme_ioctl.h	2.43 KB
nvram.h	532 B
omap3isp.h	20.36 KB
omapfb.h	5.78 KB
oom.h	511 B
openat2.h	1.42 KB
openvswitch.h	40.41 KB
packet_diag.h	1.63 KB
param.h	141 B
parport.h	3.56 KB
patchkey.h	892 B
pci.h	1.35 KB
pci_regs.h	60.58 KB
pcitest.h	920 B
perf_event.h	42.43 KB
personality.h	2.05 KB
pfkeyv2.h	10.32 KB
pfrut.h	7.8 KB
pg.h	2.34 KB
phantom.h	1.62 KB
phonet.h	4.57 KB
pidfd.h	256 B
pkt_cls.h	18.65 KB
pkt_sched.h	28.66 KB
pktcdvd.h	2.63 KB
pmu.h	5.32 KB
poll.h	22 B
posix_acl.h	1.22 KB
posix_acl_xattr.h	1.09 KB
posix_types.h	1.07 KB
ppdev.h	3.21 KB
ppp-comp.h	2.47 KB
ppp-ioctl.h	5.59 KB
ppp_defs.h	5.43 KB
pps.h	4.62 KB
pr.h	1.59 KB
prctl.h	10.81 KB
psample.h	2.57 KB
psci.h	5.02 KB
psp-dbc.h	5.16 KB
psp-sev.h	6.26 KB
ptp_clock.h	7.35 KB
ptrace.h	4.29 KB
qemu_fw_cfg.h	2.41 KB
qnx4_fs.h	2.27 KB
qnxtypes.h	624 B
qrtr.h	893 B
quota.h	6.16 KB
radeonfb.h	360 B
raid	-
random.h	1.38 KB
rds.h	10.91 KB
reboot.h	1.31 KB
reiserfs_fs.h	775 B
reiserfs_xattr.h	533 B
remoteproc_cdev.h	1.08 KB
resource.h	2.32 KB
rfkill.h	6.45 KB
rio_cm_cdev.h	3.17 KB
rio_mport_cdev.h	9.11 KB
rkisp1-config.h	30.63 KB
romfs_fs.h	1.21 KB
rose.h	2.18 KB
route.h	2.28 KB
rpl.h	814 B
rpl_iptunnel.h	424 B
rpmsg.h	1.03 KB
rpmsg_types.h	288 B
rseq.h	4.79 KB
rtc.h	5.19 KB
rtnetlink.h	20.8 KB
rxrpc.h	4.81 KB
scc.h	4.52 KB
sched	-
sched.h	6.12 KB
scif_ioctl.h	6.23 KB
screen_info.h	2.42 KB
sctp.h	35.18 KB
seccomp.h	5.6 KB
securebits.h	2.64 KB
sed-opal.h	5.29 KB
seg6.h	1.14 KB
seg6_genl.h	589 B
seg6_hmac.h	423 B
seg6_iptunnel.h	984 B
seg6_local.h	3.78 KB
selinux_netlink.h	1.17 KB
sem.h	2.98 KB
serial.h	4.9 KB
serial_core.h	4.93 KB
serial_reg.h	15.65 KB
serio.h	2.09 KB
sev-guest.h	2.47 KB
shm.h	3.71 KB
signal.h	388 B
signalfd.h	1.2 KB
smc.h	8.31 KB
smc_diag.h	2.77 KB
smiapp.h	1.03 KB
snmp.h	13.92 KB
sock_diag.h	1.27 KB
socket.h	919 B
sockios.h	6.69 KB
sonet.h	2.24 KB
sonypi.h	5.18 KB
sound.h	1.21 KB
soundcard.h	44.96 KB
spi	-
stat.h	7.23 KB
stddef.h	1.69 KB
stm.h	1.25 KB
string.h	238 B
sunrpc	-
surface_aggregator	-
suspend_ioctls.h	1.4 KB
swab.h	6.76 KB
switchtec_ioctl.h	5.14 KB
sync_file.h	3.49 KB
synclink.h	8.77 KB
sysctl.h	25.3 KB
sysinfo.h	1.02 KB
target_core_user.h	4.52 KB
taskstats.h	8.13 KB
tc_act	-
tc_ematch	-
tcp.h	11.65 KB
tcp_metrics.h	1.94 KB
tdx-guest.h	1.27 KB
tee.h	13.09 KB
termios.h	172 B
thermal.h	3.23 KB
time.h	1.71 KB
time_types.h	1.24 KB
timerfd.h	936 B
times.h	278 B
timex.h	7.63 KB
tiocl.h	1.69 KB
tipc.h	8.62 KB
tipc_config.h	14.52 KB
tipc_netlink.h	9.17 KB
tipc_sockets_diag.h	468 B
tls.h	7.06 KB
toshiba.h	1.88 KB
tps6594_pfsm.h	1.13 KB
tty.h	1.55 KB
tty_flags.h	4.4 KB
types.h	1.6 KB
udf_fs_i.h	697 B
udmabuf.h	643 B
udp.h	1.65 KB
uhid.h	4.54 KB
uinput.h	9.04 KB
uio.h	732 B
uleds.h	798 B
ultrasound.h	4.46 KB
um_timetravel.h	3.87 KB
un.h	384 B
unistd.h	220 B
unix_diag.h	1.3 KB
usb	-
usbdevice_fs.h	8.12 KB
usbip.h	1.47 KB
userfaultfd.h	10.68 KB
userio.h	1.48 KB
utime.h	223 B
utsname.h	669 B
uuid.h	28 B
uvcvideo.h	2.57 KB
v4l2-common.h	2.01 KB
v4l2-controls.h	94.59 KB
v4l2-dv-timings.h	30.39 KB
v4l2-mediabus.h	5.3 KB
v4l2-subdev.h	9.76 KB
vbox_err.h	7.09 KB
vbox_vmmdev_types.h	11.38 KB
vboxguest.h	9.15 KB
vdpa.h	1.74 KB
vduse.h	9.58 KB
version.h	374 B
veth.h	224 B
vfio.h	70.12 KB
vfio_ccw.h	1.29 KB
vfio_zdev.h	2.48 KB
vhost.h	8.24 KB
vhost_types.h	4.77 KB
videodev2.h	98.83 KB
virtio_9p.h	2 KB
virtio_balloon.h	5.16 KB
virtio_blk.h	9.75 KB
virtio_bt.h	910 B
virtio_config.h	4.36 KB
virtio_console.h	3.08 KB
virtio_crypto.h	13.56 KB
virtio_fs.h	573 B
virtio_gpio.h	1.7 KB
virtio_gpu.h	11.28 KB
virtio_i2c.h	1.16 KB
virtio_ids.h	3.7 KB
virtio_input.h	2.46 KB
virtio_iommu.h	3.84 KB
virtio_mem.h	6.99 KB
virtio_mmio.h	4.85 KB
virtio_net.h	14.72 KB
virtio_pci.h	7.3 KB
virtio_pcidev.h	2.33 KB
virtio_pmem.h	641 B
virtio_ring.h	8.52 KB
virtio_rng.h	265 B
virtio_scmi.h	637 B
virtio_scsi.h	5.94 KB
virtio_snd.h	12.86 KB
virtio_types.h	2.1 KB
virtio_vsock.h	3.27 KB
vm_sockets.h	7.18 KB
vm_sockets_diag.h	963 B
vmcore.h	455 B
vsockmon.h	1.84 KB
vt.h	2.99 KB
vtpm_proxy.h	1.68 KB
wait.h	682 B
watch_queue.h	3.41 KB
watchdog.h	2.28 KB
wireguard.h	7.57 KB
wireless.h	41.7 KB
wmi.h	1.72 KB
wwan.h	295 B
x25.h	3.48 KB
xattr.h	2.95 KB
xdp_diag.h	1.43 KB
xfrm.h	12.33 KB
xilinx-v4l2-controls.h	2.91 KB
zorro.h	3.22 KB
zorro_ids.h	29.26 KB

Edit: acrn.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * Userspace interface for /dev/acrn_hsm - ACRN Hypervisor Service Module
 *
 * This file can be used by applications that need to communicate with the HSM
 * via the ioctl interface.
 *
 * Copyright (C) 2021 Intel Corporation. All rights reserved.
 */

#ifndef _ACRN_H
#define _ACRN_H

#include <linux/types.h>

#define ACRN_IO_REQUEST_MAX		16

#define ACRN_IOREQ_STATE_PENDING	0
#define ACRN_IOREQ_STATE_COMPLETE	1
#define ACRN_IOREQ_STATE_PROCESSING	2
#define ACRN_IOREQ_STATE_FREE		3

#define ACRN_IOREQ_TYPE_PORTIO		0
#define ACRN_IOREQ_TYPE_MMIO		1
#define ACRN_IOREQ_TYPE_PCICFG		2

#define ACRN_IOREQ_DIR_READ		0
#define ACRN_IOREQ_DIR_WRITE		1

/**
 * struct acrn_mmio_request - Info of a MMIO I/O request
 * @direction:	Access direction of this request (ACRN_IOREQ_DIR_*)
 * @reserved:	Reserved for alignment and should be 0
 * @address:	Access address of this MMIO I/O request
 * @size:	Access size of this MMIO I/O request
 * @value:	Read/write value of this MMIO I/O request
 */
struct acrn_mmio_request {
	__u32	direction;
	__u32	reserved;
	__u64	address;
	__u64	size;
	__u64	value;
};

/**
 * struct acrn_pio_request - Info of a PIO I/O request
 * @direction:	Access direction of this request (ACRN_IOREQ_DIR_*)
 * @reserved:	Reserved for alignment and should be 0
 * @address:	Access address of this PIO I/O request
 * @size:	Access size of this PIO I/O request
 * @value:	Read/write value of this PIO I/O request
 */
struct acrn_pio_request {
	__u32	direction;
	__u32	reserved;
	__u64	address;
	__u64	size;
	__u32	value;
};

/**
 * struct acrn_pci_request - Info of a PCI I/O request
 * @direction:	Access direction of this request (ACRN_IOREQ_DIR_*)
 * @reserved:	Reserved for alignment and should be 0
 * @size:	Access size of this PCI I/O request
 * @value:	Read/write value of this PIO I/O request
 * @bus:	PCI bus value of this PCI I/O request
 * @dev:	PCI device value of this PCI I/O request
 * @func:	PCI function value of this PCI I/O request
 * @reg:	PCI config space offset of this PCI I/O request
 *
 * Need keep same header layout with &struct acrn_pio_request.
 */
struct acrn_pci_request {
	__u32	direction;
	__u32	reserved[3];
	__u64	size;
	__u32	value;
	__u32	bus;
	__u32	dev;
	__u32	func;
	__u32	reg;
};

/**
 * struct acrn_io_request - 256-byte ACRN I/O request
 * @type:		Type of this request (ACRN_IOREQ_TYPE_*).
 * @completion_polling:	Polling flag. Hypervisor will poll completion of the
 *			I/O request if this flag set.
 * @reserved0:		Reserved fields.
 * @reqs:		Union of different types of request. Byte offset: 64.
 * @reqs.pio_request:	PIO request data of the I/O request.
 * @reqs.pci_request:	PCI configuration space request data of the I/O request.
 * @reqs.mmio_request:	MMIO request data of the I/O request.
 * @reqs.data:		Raw data of the I/O request.
 * @reserved1:		Reserved fields.
 * @kernel_handled:	Flag indicates this request need be handled in kernel.
 * @processed:		The status of this request (ACRN_IOREQ_STATE_*).
 *
 * The state transitions of ACRN I/O request:
 *
 *    FREE -> PENDING -> PROCESSING -> COMPLETE -> FREE -> ...
 *
 * An I/O request in COMPLETE or FREE state is owned by the hypervisor. HSM and
 * ACRN userspace are in charge of processing the others.
 *
 * On basis of the states illustrated above, a typical lifecycle of ACRN IO
 * request would look like:
 *
 * Flow                 (assume the initial state is FREE)
 * |
 * |   Service VM vCPU 0     Service VM vCPU x      User vCPU y
 * |
 * |                                             hypervisor:
 * |                                               fills in type, addr, etc.
 * |                                               pauses the User VM vCPU y
 * |                                               sets the state to PENDING (a)
 * |                                               fires an upcall to Service VM
 * |
 * | HSM:
 * |  scans for PENDING requests
 * |  sets the states to PROCESSING (b)
 * |  assigns the requests to clients (c)
 * V
 * |                     client:
 * |                       scans for the assigned requests
 * |                       handles the requests (d)
 * |                     HSM:
 * |                       sets states to COMPLETE
 * |                       notifies the hypervisor
 * |
 * |                     hypervisor:
 * |                       resumes User VM vCPU y (e)
 * |
 * |                                             hypervisor:
 * |                                               post handling (f)
 * V                                               sets states to FREE
 *
 * Note that the procedures (a) to (f) in the illustration above require to be
 * strictly processed in the order.  One vCPU cannot trigger another request of
 * I/O emulation before completing the previous one.
 *
 * Atomic and barriers are required when HSM and hypervisor accessing the state
 * of &struct acrn_io_request.
 *
 */
struct acrn_io_request {
	__u32	type;
	__u32	completion_polling;
	__u32	reserved0[14];
	union {
		struct acrn_pio_request		pio_request;
		struct acrn_pci_request		pci_request;
		struct acrn_mmio_request	mmio_request;
		__u64				data[8];
	} reqs;
	__u32	reserved1;
	__u32	kernel_handled;
	__u32	processed;
} __attribute__((aligned(256)));

struct acrn_io_request_buffer {
	union {
		struct acrn_io_request	req_slot[ACRN_IO_REQUEST_MAX];
		__u8			reserved[4096];
	};
};

/**
 * struct acrn_ioreq_notify - The structure of ioreq completion notification
 * @vmid:	User VM ID
 * @reserved:	Reserved and should be 0
 * @vcpu:	vCPU ID
 */
struct acrn_ioreq_notify {
	__u16	vmid;
	__u16	reserved;
	__u32	vcpu;
};

/**
 * struct acrn_vm_creation - Info to create a User VM
 * @vmid:		User VM ID returned from the hypervisor
 * @reserved0:		Reserved and must be 0
 * @vcpu_num:		Number of vCPU in the VM. Return from hypervisor.
 * @reserved1:		Reserved and must be 0
 * @uuid:		Empty space never to be used again (used to be UUID of the VM)
 * @vm_flag:		Flag of the VM creating. Pass to hypervisor directly.
 * @ioreq_buf:		Service VM GPA of I/O request buffer. Pass to
 *			hypervisor directly.
 * @cpu_affinity:	CPU affinity of the VM. Pass to hypervisor directly.
 * 			It's a bitmap which indicates CPUs used by the VM.
 */
struct acrn_vm_creation {
	__u16	vmid;
	__u16	reserved0;
	__u16	vcpu_num;
	__u16	reserved1;
	__u8	uuid[16];
	__u64	vm_flag;
	__u64	ioreq_buf;
	__u64	cpu_affinity;
};

/**
 * struct acrn_gp_regs - General registers of a User VM
 * @rax:	Value of register RAX
 * @rcx:	Value of register RCX
 * @rdx:	Value of register RDX
 * @rbx:	Value of register RBX
 * @rsp:	Value of register RSP
 * @rbp:	Value of register RBP
 * @rsi:	Value of register RSI
 * @rdi:	Value of register RDI
 * @r8:		Value of register R8
 * @r9:		Value of register R9
 * @r10:	Value of register R10
 * @r11:	Value of register R11
 * @r12:	Value of register R12
 * @r13:	Value of register R13
 * @r14:	Value of register R14
 * @r15:	Value of register R15
 */
struct acrn_gp_regs {
	__le64	rax;
	__le64	rcx;
	__le64	rdx;
	__le64	rbx;
	__le64	rsp;
	__le64	rbp;
	__le64	rsi;
	__le64	rdi;
	__le64	r8;
	__le64	r9;
	__le64	r10;
	__le64	r11;
	__le64	r12;
	__le64	r13;
	__le64	r14;
	__le64	r15;
};

/**
 * struct acrn_descriptor_ptr - Segment descriptor table of a User VM.
 * @limit:	Limit field.
 * @base:	Base field.
 * @reserved:	Reserved and must be 0.
 */
struct acrn_descriptor_ptr {
	__le16	limit;
	__le64	base;
	__le16	reserved[3];
} __attribute__ ((__packed__));

/**
 * struct acrn_regs - Registers structure of a User VM
 * @gprs:		General registers
 * @gdt:		Global Descriptor Table
 * @idt:		Interrupt Descriptor Table
 * @rip:		Value of register RIP
 * @cs_base:		Base of code segment selector
 * @cr0:		Value of register CR0
 * @cr4:		Value of register CR4
 * @cr3:		Value of register CR3
 * @ia32_efer:		Value of IA32_EFER MSR
 * @rflags:		Value of regsiter RFLAGS
 * @reserved_64:	Reserved and must be 0
 * @cs_ar:		Attribute field of code segment selector
 * @cs_limit:		Limit field of code segment selector
 * @reserved_32:	Reserved and must be 0
 * @cs_sel:		Value of code segment selector
 * @ss_sel:		Value of stack segment selector
 * @ds_sel:		Value of data segment selector
 * @es_sel:		Value of extra segment selector
 * @fs_sel:		Value of FS selector
 * @gs_sel:		Value of GS selector
 * @ldt_sel:		Value of LDT descriptor selector
 * @tr_sel:		Value of TSS descriptor selector
 */
struct acrn_regs {
	struct acrn_gp_regs		gprs;
	struct acrn_descriptor_ptr	gdt;
	struct acrn_descriptor_ptr	idt;

__le64				rip;
	__le64				cs_base;
	__le64				cr0;
	__le64				cr4;
	__le64				cr3;
	__le64				ia32_efer;
	__le64				rflags;
	__le64				reserved_64[4];

__le32				cs_ar;
	__le32				cs_limit;
	__le32				reserved_32[3];

__le16				cs_sel;
	__le16				ss_sel;
	__le16				ds_sel;
	__le16				es_sel;
	__le16				fs_sel;
	__le16				gs_sel;
	__le16				ldt_sel;
	__le16				tr_sel;
};

/**
 * struct acrn_vcpu_regs - Info of vCPU registers state
 * @vcpu_id:	vCPU ID
 * @reserved:	Reserved and must be 0
 * @vcpu_regs:	vCPU registers state
 *
 * This structure will be passed to hypervisor directly.
 */
struct acrn_vcpu_regs {
	__u16			vcpu_id;
	__u16			reserved[3];
	struct acrn_regs	vcpu_regs;
};

#define	ACRN_MEM_ACCESS_RIGHT_MASK	0x00000007U
#define	ACRN_MEM_ACCESS_READ		0x00000001U
#define	ACRN_MEM_ACCESS_WRITE		0x00000002U
#define	ACRN_MEM_ACCESS_EXEC		0x00000004U
#define	ACRN_MEM_ACCESS_RWX		(ACRN_MEM_ACCESS_READ  | \
					 ACRN_MEM_ACCESS_WRITE | \
					 ACRN_MEM_ACCESS_EXEC)

#define	ACRN_MEM_TYPE_MASK		0x000007C0U
#define	ACRN_MEM_TYPE_WB		0x00000040U
#define	ACRN_MEM_TYPE_WT		0x00000080U
#define	ACRN_MEM_TYPE_UC		0x00000100U
#define	ACRN_MEM_TYPE_WC		0x00000200U
#define	ACRN_MEM_TYPE_WP		0x00000400U

/* Memory mapping types */
#define	ACRN_MEMMAP_RAM			0
#define	ACRN_MEMMAP_MMIO		1

/**
 * struct acrn_vm_memmap - A EPT memory mapping info for a User VM.
 * @type:		Type of the memory mapping (ACRM_MEMMAP_*).
 *			Pass to hypervisor directly.
 * @attr:		Attribute of the memory mapping.
 *			Pass to hypervisor directly.
 * @user_vm_pa:		Physical address of User VM.
 *			Pass to hypervisor directly.
 * @service_vm_pa:	Physical address of Service VM.
 *			Pass to hypervisor directly.
 * @vma_base:		VMA address of Service VM. Pass to hypervisor directly.
 * @len:		Length of the memory mapping.
 *			Pass to hypervisor directly.
 */
struct acrn_vm_memmap {
	__u32	type;
	__u32	attr;
	__u64	user_vm_pa;
	union {
		__u64	service_vm_pa;
		__u64	vma_base;
	};
	__u64	len;
};

/* Type of interrupt of a passthrough device */
#define ACRN_PTDEV_IRQ_INTX	0
#define ACRN_PTDEV_IRQ_MSI	1
#define ACRN_PTDEV_IRQ_MSIX	2
/**
 * struct acrn_ptdev_irq - Interrupt data of a passthrough device.
 * @type:		Type (ACRN_PTDEV_IRQ_*)
 * @virt_bdf:		Virtual Bus/Device/Function
 * @phys_bdf:		Physical Bus/Device/Function
 * @intx:		Info of interrupt
 * @intx.virt_pin:	Virtual IOAPIC pin
 * @intx.phys_pin:	Physical IOAPIC pin
 * @intx.is_pic_pin:	Is PIC pin or not
 *
 * This structure will be passed to hypervisor directly.
 */
struct acrn_ptdev_irq {
	__u32	type;
	__u16	virt_bdf;
	__u16	phys_bdf;

struct {
		__u32	virt_pin;
		__u32	phys_pin;
		__u32	is_pic_pin;
	} intx;
};

/* Type of PCI device assignment */
#define ACRN_PTDEV_QUIRK_ASSIGN	(1U << 0)

#define ACRN_PCI_NUM_BARS	6
/**
 * struct acrn_pcidev - Info for assigning or de-assigning a PCI device
 * @type:	Type of the assignment
 * @virt_bdf:	Virtual Bus/Device/Function
 * @phys_bdf:	Physical Bus/Device/Function
 * @intr_line:	PCI interrupt line
 * @intr_pin:	PCI interrupt pin
 * @bar:	PCI BARs.
 *
 * This structure will be passed to hypervisor directly.
 */
struct acrn_pcidev {
	__u32	type;
	__u16	virt_bdf;
	__u16	phys_bdf;
	__u8	intr_line;
	__u8	intr_pin;
	__u32	bar[ACRN_PCI_NUM_BARS];
};

/**
 * struct acrn_msi_entry - Info for injecting a MSI interrupt to a VM
 * @msi_addr:	MSI addr[19:12] with dest vCPU ID
 * @msi_data:	MSI data[7:0] with vector
 */
struct acrn_msi_entry {
	__u64	msi_addr;
	__u64	msi_data;
};

struct acrn_acpi_generic_address {
	__u8	space_id;
	__u8	bit_width;
	__u8	bit_offset;
	__u8	access_size;
	__u64	address;
} __attribute__ ((__packed__));

/**
 * struct acrn_cstate_data - A C state package defined in ACPI
 * @cx_reg:	Register of the C state object
 * @type:	Type of the C state object
 * @latency:	The worst-case latency to enter and exit this C state
 * @power:	The average power consumption when in this C state
 */
struct acrn_cstate_data {
	struct acrn_acpi_generic_address	cx_reg;
	__u8					type;
	__u32					latency;
	__u64					power;
};

/**
 * struct acrn_pstate_data - A P state package defined in ACPI
 * @core_frequency:	CPU frequency (in MHz).
 * @power:		Power dissipation (in milliwatts).
 * @transition_latency:	The worst-case latency in microseconds that CPU is
 * 			unavailable during a transition from any P state to
 * 			this P state.
 * @bus_master_latency:	The worst-case latency in microseconds that Bus Masters
 * 			are prevented from accessing memory during a transition
 * 			from any P state to this P state.
 * @control:		The value to be written to Performance Control Register
 * @status:		Transition status.
 */
struct acrn_pstate_data {
	__u64	core_frequency;
	__u64	power;
	__u64	transition_latency;
	__u64	bus_master_latency;
	__u64	control;
	__u64	status;
};

#define PMCMD_TYPE_MASK		0x000000ff
enum acrn_pm_cmd_type {
	ACRN_PMCMD_GET_PX_CNT,
	ACRN_PMCMD_GET_PX_DATA,
	ACRN_PMCMD_GET_CX_CNT,
	ACRN_PMCMD_GET_CX_DATA,
};

#define ACRN_IOEVENTFD_FLAG_PIO		0x01
#define ACRN_IOEVENTFD_FLAG_DATAMATCH	0x02
#define ACRN_IOEVENTFD_FLAG_DEASSIGN	0x04
/**
 * struct acrn_ioeventfd - Data to operate a &struct hsm_ioeventfd
 * @fd:		The fd of eventfd associated with a hsm_ioeventfd
 * @flags:	Logical-OR of ACRN_IOEVENTFD_FLAG_*
 * @addr:	The start address of IO range of ioeventfd
 * @len:	The length of IO range of ioeventfd
 * @reserved:	Reserved and should be 0
 * @data:	Data for data matching
 *
 * Without flag ACRN_IOEVENTFD_FLAG_DEASSIGN, ioctl ACRN_IOCTL_IOEVENTFD
 * creates a &struct hsm_ioeventfd with properties originated from &struct
 * acrn_ioeventfd. With flag ACRN_IOEVENTFD_FLAG_DEASSIGN, ioctl
 * ACRN_IOCTL_IOEVENTFD destroys the &struct hsm_ioeventfd matching the fd.
 */
struct acrn_ioeventfd {
	__u32	fd;
	__u32	flags;
	__u64	addr;
	__u32	len;
	__u32	reserved;
	__u64	data;
};

#define ACRN_IRQFD_FLAG_DEASSIGN	0x01
/**
 * struct acrn_irqfd - Data to operate a &struct hsm_irqfd
 * @fd:		The fd of eventfd associated with a hsm_irqfd
 * @flags:	Logical-OR of ACRN_IRQFD_FLAG_*
 * @msi:	Info of MSI associated with the irqfd
 */
struct acrn_irqfd {
	__s32			fd;
	__u32			flags;
	struct acrn_msi_entry	msi;
};

/* The ioctl type, documented in ioctl-number.rst */
#define ACRN_IOCTL_TYPE			0xA2

/*
 * Common IOCTL IDs definition for ACRN userspace
 */
#define ACRN_IOCTL_CREATE_VM		\
	_IOWR(ACRN_IOCTL_TYPE, 0x10, struct acrn_vm_creation)
#define ACRN_IOCTL_DESTROY_VM		\
	_IO(ACRN_IOCTL_TYPE, 0x11)
#define ACRN_IOCTL_START_VM		\
	_IO(ACRN_IOCTL_TYPE, 0x12)
#define ACRN_IOCTL_PAUSE_VM		\
	_IO(ACRN_IOCTL_TYPE, 0x13)
#define ACRN_IOCTL_RESET_VM		\
	_IO(ACRN_IOCTL_TYPE, 0x15)
#define ACRN_IOCTL_SET_VCPU_REGS	\
	_IOW(ACRN_IOCTL_TYPE, 0x16, struct acrn_vcpu_regs)

#define ACRN_IOCTL_INJECT_MSI		\
	_IOW(ACRN_IOCTL_TYPE, 0x23, struct acrn_msi_entry)
#define ACRN_IOCTL_VM_INTR_MONITOR	\
	_IOW(ACRN_IOCTL_TYPE, 0x24, unsigned long)
#define ACRN_IOCTL_SET_IRQLINE		\
	_IOW(ACRN_IOCTL_TYPE, 0x25, __u64)

#define ACRN_IOCTL_NOTIFY_REQUEST_FINISH \
	_IOW(ACRN_IOCTL_TYPE, 0x31, struct acrn_ioreq_notify)
#define ACRN_IOCTL_CREATE_IOREQ_CLIENT	\
	_IO(ACRN_IOCTL_TYPE, 0x32)
#define ACRN_IOCTL_ATTACH_IOREQ_CLIENT	\
	_IO(ACRN_IOCTL_TYPE, 0x33)
#define ACRN_IOCTL_DESTROY_IOREQ_CLIENT	\
	_IO(ACRN_IOCTL_TYPE, 0x34)
#define ACRN_IOCTL_CLEAR_VM_IOREQ	\
	_IO(ACRN_IOCTL_TYPE, 0x35)

#define ACRN_IOCTL_SET_MEMSEG		\
	_IOW(ACRN_IOCTL_TYPE, 0x41, struct acrn_vm_memmap)
#define ACRN_IOCTL_UNSET_MEMSEG		\
	_IOW(ACRN_IOCTL_TYPE, 0x42, struct acrn_vm_memmap)

#define ACRN_IOCTL_SET_PTDEV_INTR	\
	_IOW(ACRN_IOCTL_TYPE, 0x53, struct acrn_ptdev_irq)
#define ACRN_IOCTL_RESET_PTDEV_INTR	\
	_IOW(ACRN_IOCTL_TYPE, 0x54, struct acrn_ptdev_irq)
#define ACRN_IOCTL_ASSIGN_PCIDEV	\
	_IOW(ACRN_IOCTL_TYPE, 0x55, struct acrn_pcidev)
#define ACRN_IOCTL_DEASSIGN_PCIDEV	\
	_IOW(ACRN_IOCTL_TYPE, 0x56, struct acrn_pcidev)

#define ACRN_IOCTL_PM_GET_CPU_STATE	\
	_IOWR(ACRN_IOCTL_TYPE, 0x60, __u64)

#define ACRN_IOCTL_IOEVENTFD		\
	_IOW(ACRN_IOCTL_TYPE, 0x70, struct acrn_ioeventfd)
#define ACRN_IOCTL_IRQFD		\
	_IOW(ACRN_IOCTL_TYPE, 0x71, struct acrn_irqfd)

#endif /* _ACRN_H */