Gecko [ oric.aiou.edu.pk ]

Name	Size	Permission
android	[ DIR ]	drwxr-xr-x
byteorder	[ DIR ]	drwxr-xr-x
caif	[ DIR ]	drwxr-xr-x
can	[ DIR ]	drwxr-xr-x
cifs	[ DIR ]	drwxr-xr-x
dvb	[ DIR ]	drwxr-xr-x
genwqe	[ DIR ]	drwxr-xr-x
hdlc	[ DIR ]	drwxr-xr-x
hsi	[ DIR ]	drwxr-xr-x
iio	[ DIR ]	drwxr-xr-x
isdn	[ DIR ]	drwxr-xr-x
mmc	[ DIR ]	drwxr-xr-x
netfilter	[ DIR ]	drwxr-xr-x
netfilter_arp	[ DIR ]	drwxr-xr-x
netfilter_bridge	[ DIR ]	drwxr-xr-x
netfilter_ipv4	[ DIR ]	drwxr-xr-x
netfilter_ipv6	[ DIR ]	drwxr-xr-x
nfsd	[ DIR ]	drwxr-xr-x
raid	[ DIR ]	drwxr-xr-x
sched	[ DIR ]	drwxr-xr-x
spi	[ DIR ]	drwxr-xr-x
sunrpc	[ DIR ]	drwxr-xr-x
tc_act	[ DIR ]	drwxr-xr-x
tc_ematch	[ DIR ]	drwxr-xr-x
usb	[ DIR ]	drwxr-xr-x
wimax	[ DIR ]	drwxr-xr-x
a.out.h	6.73 KB	-rw-r--r--
acct.h	3.65 KB	-rw-r--r--
adb.h	1.11 KB	-rw-r--r--
adfs_fs.h	993 B	-rw-r--r--
affs_hardblocks.h	1.54 KB	-rw-r--r--
agpgart.h	3.85 KB	-rw-r--r--
aio_abi.h	3.32 KB	-rw-r--r--
am437x-vpfe.h	3.59 KB	-rw-r--r--
apm_bios.h	3.6 KB	-rw-r--r--
arcfb.h	213 B	-rw-r--r--
arm_sdei.h	2.69 KB	-rw-r--r--
aspeed-lpc-ctrl.h	1.74 KB	-rw-r--r--
aspeed-p2a-ctrl.h	1.86 KB	-rw-r--r--
atalk.h	1023 B	-rw-r--r--
atm.h	7.7 KB	-rw-r--r--
atm_eni.h	648 B	-rw-r--r--
atm_he.h	406 B	-rw-r--r--
atm_idt77105.h	955 B	-rw-r--r--
atm_nicstar.h	1.25 KB	-rw-r--r--
atm_tcp.h	1.58 KB	-rw-r--r--
atm_zatm.h	1.5 KB	-rw-r--r--
atmapi.h	952 B	-rw-r--r--
atmarp.h	1.27 KB	-rw-r--r--
atmbr2684.h	3.19 KB	-rw-r--r--
atmclip.h	576 B	-rw-r--r--
atmdev.h	7.5 KB	-rw-r--r--
atmioc.h	1.61 KB	-rw-r--r--
atmlec.h	2.33 KB	-rw-r--r--
atmmpc.h	4.13 KB	-rw-r--r--
atmppp.h	639 B	-rw-r--r--
atmsap.h	4.85 KB	-rw-r--r--
atmsvc.h	1.81 KB	-rw-r--r--
audit.h	20.27 KB	-rw-r--r--
aufs_type.h	10.9 KB	-rw-r--r--
auto_dev-ioctl.h	4.87 KB	-rw-r--r--
auto_fs.h	6.28 KB	-rw-r--r--
auto_fs4.h	451 B	-rw-r--r--
auxvec.h	1.46 KB	-rw-r--r--
ax25.h	2.76 KB	-rw-r--r--
b1lli.h	1.68 KB	-rw-r--r--
batadv_packet.h	19.9 KB	-rw-r--r--
batman_adv.h	15.92 KB	-rw-r--r--
baycom.h	883 B	-rw-r--r--
bcache.h	8.23 KB	-rw-r--r--
bcm933xx_hcs.h	419 B	-rw-r--r--
bfs_fs.h	1.86 KB	-rw-r--r--
binfmts.h	628 B	-rw-r--r--
blkpg.h	1.6 KB	-rw-r--r--
blktrace_api.h	4.59 KB	-rw-r--r--
blkzoned.h	5.27 KB	-rw-r--r--
bpf.h	135.26 KB	-rw-r--r--
bpf_common.h	1.33 KB	-rw-r--r--
bpf_perf_event.h	529 B	-rw-r--r--
bpfilter.h	465 B	-rw-r--r--
bpqether.h	981 B	-rw-r--r--
bsg.h	2.44 KB	-rw-r--r--
bt-bmc.h	572 B	-rw-r--r--
btf.h	4.52 KB	-rw-r--r--
btrfs.h	28.62 KB	-rw-r--r--
btrfs_tree.h	24.91 KB	-rw-r--r--
can.h	8.02 KB	-rw-r--r--
capability.h	11.5 KB	-rw-r--r--
capi.h	3.05 KB	-rw-r--r--
cciss_defs.h	3.2 KB	-rw-r--r--
cciss_ioctl.h	2.7 KB	-rw-r--r--
cdrom.h	28.18 KB	-rw-r--r--
cec-funcs.h	52.37 KB	-rw-r--r--
cec.h	35.54 KB	-rw-r--r--
cgroupstats.h	2.17 KB	-rw-r--r--
chio.h	5.22 KB	-rw-r--r--
cm4000_cs.h	1.76 KB	-rw-r--r--
cn_proc.h	3.38 KB	-rw-r--r--
coda.h	17.79 KB	-rw-r--r--
coff.h	12.25 KB	-rw-r--r--
connector.h	2.2 KB	-rw-r--r--
const.h	991 B	-rw-r--r--
coresight-stm.h	706 B	-rw-r--r--
cramfs_fs.h	3.47 KB	-rw-r--r--
cryptouser.h	5.2 KB	-rw-r--r--
cuda.h	905 B	-rw-r--r--
cyclades.h	16.71 KB	-rw-r--r--
cycx_cfm.h	2.92 KB	-rw-r--r--
dcbnl.h	24.7 KB	-rw-r--r--
dccp.h	6.29 KB	-rw-r--r--
devlink.h	14.51 KB	-rw-r--r--
dlm.h	2.49 KB	-rw-r--r--
dlm_device.h	2.48 KB	-rw-r--r--
dlm_netlink.h	1.13 KB	-rw-r--r--
dlm_plock.h	894 B	-rw-r--r--
dlmconstants.h	4.96 KB	-rw-r--r--
dm-ioctl.h	10.73 KB	-rw-r--r--
dm-log-userspace.h	14.83 KB	-rw-r--r--
dma-buf.h	1.66 KB	-rw-r--r--
dns_resolver.h	3.86 KB	-rw-r--r--
dqblk_xfs.h	8.79 KB	-rw-r--r--
edd.h	5.47 KB	-rw-r--r--
efs_fs_sb.h	2.17 KB	-rw-r--r--
elf-em.h	2.53 KB	-rw-r--r--
elf-fdpic.h	1.1 KB	-rw-r--r--
elf.h	13.32 KB	-rw-r--r--
elfcore.h	2.92 KB	-rw-r--r--
errno.h	23 B	-rw-r--r--
errqueue.h	1.54 KB	-rw-r--r--
erspan.h	1.03 KB	-rw-r--r--
ethtool.h	73.03 KB	-rw-r--r--
eventpoll.h	2.68 KB	-rw-r--r--
fadvise.h	842 B	-rw-r--r--
falloc.h	3.5 KB	-rw-r--r--
fanotify.h	5.24 KB	-rw-r--r--
fb.h	16.03 KB	-rw-r--r--
fcntl.h	3.36 KB	-rw-r--r--
fd.h	11.4 KB	-rw-r--r--
fdreg.h	5.29 KB	-rw-r--r--
fib_rules.h	1.99 KB	-rw-r--r--
fiemap.h	2.71 KB	-rw-r--r--
filter.h	2.16 KB	-rw-r--r--
firewire-cdev.h	43.21 KB	-rw-r--r--
firewire-constants.h	3.16 KB	-rw-r--r--
fou.h	894 B	-rw-r--r--
fpga-dfl.h	5.96 KB	-rw-r--r--
fs.h	11.92 KB	-rw-r--r--
fscrypt.h	5.98 KB	-rw-r--r--
fsi.h	2.2 KB	-rw-r--r--
fsl_hypervisor.h	7.13 KB	-rw-r--r--
fsmap.h	4.29 KB	-rw-r--r--
fsverity.h	931 B	-rw-r--r--
fuse.h	19.93 KB	-rw-r--r--
futex.h	4.88 KB	-rw-r--r--
gameport.h	897 B	-rw-r--r--
gen_stats.h	1.56 KB	-rw-r--r--
genetlink.h	1.88 KB	-rw-r--r--
gfs2_ondisk.h	14.31 KB	-rw-r--r--
gigaset_dev.h	1.41 KB	-rw-r--r--
gpio.h	5.62 KB	-rw-r--r--
gsmmux.h	1.12 KB	-rw-r--r--
gtp.h	681 B	-rw-r--r--
hash_info.h	971 B	-rw-r--r--
hdlc.h	637 B	-rw-r--r--
hdlcdrv.h	2.84 KB	-rw-r--r--
hdreg.h	22.17 KB	-rw-r--r--
hid.h	1.86 KB	-rw-r--r--
hiddev.h	6.2 KB	-rw-r--r--
hidraw.h	1.48 KB	-rw-r--r--
hpet.h	743 B	-rw-r--r--
hsr_netlink.h	1.06 KB	-rw-r--r--
hw_breakpoint.h	742 B	-rw-r--r--
hyperv.h	10.32 KB	-rw-r--r--
hysdn_if.h	1.35 KB	-rw-r--r--
i2c-dev.h	2.55 KB	-rw-r--r--
i2c.h	6.96 KB	-rw-r--r--
i2o-dev.h	11.28 KB	-rw-r--r--
i8k.h	1.49 KB	-rw-r--r--
icmp.h	2.91 KB	-rw-r--r--
icmpv6.h	4.02 KB	-rw-r--r--
if.h	10.56 KB	-rw-r--r--
if_addr.h	1.84 KB	-rw-r--r--
if_addrlabel.h	721 B	-rw-r--r--
if_alg.h	1.5 KB	-rw-r--r--
if_arcnet.h	3.63 KB	-rw-r--r--
if_arp.h	6.41 KB	-rw-r--r--
if_bonding.h	4.73 KB	-rw-r--r--
if_bridge.h	7.1 KB	-rw-r--r--
if_cablemodem.h	986 B	-rw-r--r--
if_eql.h	1.32 KB	-rw-r--r--
if_ether.h	8.03 KB	-rw-r--r--
if_fc.h	1.7 KB	-rw-r--r--
if_fddi.h	4.27 KB	-rw-r--r--
if_frad.h	2.95 KB	-rw-r--r--
if_hippi.h	4.14 KB	-rw-r--r--
if_infiniband.h	1.22 KB	-rw-r--r--
if_link.h	23.12 KB	-rw-r--r--
if_ltalk.h	210 B	-rw-r--r--
if_macsec.h	5.7 KB	-rw-r--r--
if_packet.h	7.77 KB	-rw-r--r--
if_phonet.h	424 B	-rw-r--r--
if_plip.h	660 B	-rw-r--r--
if_ppp.h	29 B	-rw-r--r--
if_pppol2tp.h	3.21 KB	-rw-r--r--
if_pppox.h	4.76 KB	-rw-r--r--
if_slip.h	872 B	-rw-r--r--
if_team.h	2.54 KB	-rw-r--r--
if_tun.h	4 KB	-rw-r--r--
if_tunnel.h	4.72 KB	-rw-r--r--
if_vlan.h	1.79 KB	-rw-r--r--
if_x25.h	881 B	-rw-r--r--
if_xdp.h	2.75 KB	-rw-r--r--
ife.h	351 B	-rw-r--r--
igmp.h	2.99 KB	-rw-r--r--
ila.h	1.22 KB	-rw-r--r--
in.h	9.84 KB	-rw-r--r--
in6.h	7.33 KB	-rw-r--r--
in_route.h	936 B	-rw-r--r--
inet_diag.h	4.43 KB	-rw-r--r--
inotify.h	3.21 KB	-rw-r--r--
input-event-codes.h	24.97 KB	-rw-r--r--
input.h	15.61 KB	-rw-r--r--
io_uring.h	3.4 KB	-rw-r--r--
ioctl.h	163 B	-rw-r--r--
iommu.h	4.47 KB	-rw-r--r--
ip.h	4.62 KB	-rw-r--r--
ip6_tunnel.h	1.91 KB	-rw-r--r--
ip_vs.h	13.8 KB	-rw-r--r--
ipc.h	2.05 KB	-rw-r--r--
ipmi.h	14.7 KB	-rw-r--r--
ipmi_bmc.h	488 B	-rw-r--r--
ipmi_msgdefs.h	3.27 KB	-rw-r--r--
ipsec.h	947 B	-rw-r--r--
ipv6.h	3.87 KB	-rw-r--r--
ipv6_route.h	1.86 KB	-rw-r--r--
ipx.h	2.29 KB	-rw-r--r--
irqnr.h	104 B	-rw-r--r--
iso_fs.h	6.33 KB	-rw-r--r--
isst_if.h	5.28 KB	-rw-r--r--
ivtv.h	2.95 KB	-rw-r--r--
ivtvfb.h	1.18 KB	-rw-r--r--
jffs2.h	6.66 KB	-rw-r--r--
joystick.h	3.35 KB	-rw-r--r--
kcm.h	822 B	-rw-r--r--
kcmp.h	522 B	-rw-r--r--
kcov.h	1.07 KB	-rw-r--r--
kd.h	6.14 KB	-rw-r--r--
kdev_t.h	383 B	-rw-r--r--
kernel-page-flags.h	900 B	-rw-r--r--
kernel.h	194 B	-rw-r--r--
kernelcapi.h	1019 B	-rw-r--r--
kexec.h	1.83 KB	-rw-r--r--
keyboard.h	13.14 KB	-rw-r--r--
keyctl.h	5.7 KB	-rw-r--r--
kfd_ioctl.h	15.88 KB	-rw-r--r--
kvm.h	46.5 KB	-rw-r--r--
kvm_para.h	968 B	-rw-r--r--
l2tp.h	5.54 KB	-rw-r--r--
libc-compat.h	8.09 KB	-rw-r--r--
lightnvm.h	4.92 KB	-rw-r--r--
limits.h	937 B	-rw-r--r--
lirc.h	7.91 KB	-rw-r--r--
llc.h	3.09 KB	-rw-r--r--
loop.h	2.46 KB	-rw-r--r--
lp.h	4.09 KB	-rw-r--r--
lwtunnel.h	1.24 KB	-rw-r--r--
magic.h	3.6 KB	-rw-r--r--
major.h	4.6 KB	-rw-r--r--
map_to_7segment.h	7.08 KB	-rw-r--r--
matroxfb.h	1.43 KB	-rw-r--r--
max2175.h	1.01 KB	-rw-r--r--
mdio.h	15.28 KB	-rw-r--r--
media-bus-format.h	6.66 KB	-rw-r--r--
media.h	12.34 KB	-rw-r--r--
mei.h	1.95 KB	-rw-r--r--
membarrier.h	7.71 KB	-rw-r--r--
memfd.h	1.29 KB	-rw-r--r--
mempolicy.h	2.1 KB	-rw-r--r--
meye.h	2.47 KB	-rw-r--r--
mic_common.h	6.37 KB	-rw-r--r--
mic_ioctl.h	2.2 KB	-rw-r--r--
mii.h	8.09 KB	-rw-r--r--
minix_fs.h	2.07 KB	-rw-r--r--
mman.h	1.47 KB	-rw-r--r--
mmtimer.h	2.07 KB	-rw-r--r--
module.h	255 B	-rw-r--r--
mount.h	4.44 KB	-rw-r--r--
mpls.h	2.25 KB	-rw-r--r--
mpls_iptunnel.h	761 B	-rw-r--r--
mqueue.h	2.15 KB	-rw-r--r--
mroute.h	5.74 KB	-rw-r--r--
mroute6.h	4.81 KB	-rw-r--r--
msdos_fs.h	6.57 KB	-rw-r--r--
msg.h	3.29 KB	-rw-r--r--
mtio.h	7.98 KB	-rw-r--r--
n_r3964.h	2.35 KB	-rw-r--r--
nbd-netlink.h	2.32 KB	-rw-r--r--
nbd.h	2.95 KB	-rw-r--r--
ncsi.h	4.71 KB	-rw-r--r--
ndctl.h	6.61 KB	-rw-r--r--
neighbour.h	4.3 KB	-rw-r--r--
net.h	2.04 KB	-rw-r--r--
net_dropmon.h	2.77 KB	-rw-r--r--
net_namespace.h	715 B	-rw-r--r--
net_tstamp.h	4.8 KB	-rw-r--r--
netconf.h	614 B	-rw-r--r--
netdevice.h	2.2 KB	-rw-r--r--
netfilter.h	1.63 KB	-rw-r--r--
netfilter_arp.h	445 B	-rw-r--r--
netfilter_bridge.h	1.14 KB	-rw-r--r--
netfilter_ipv4.h	1.45 KB	-rw-r--r--
netfilter_ipv6.h	1.35 KB	-rw-r--r--
netlink.h	7.65 KB	-rw-r--r--
netlink_diag.h	1.49 KB	-rw-r--r--
netrom.h	807 B	-rw-r--r--
nexthop.h	1.5 KB	-rw-r--r--
nfc.h	10.97 KB	-rw-r--r--
nfs.h	4.39 KB	-rw-r--r--
nfs2.h	1.43 KB	-rw-r--r--
nfs3.h	2.3 KB	-rw-r--r--
nfs4.h	6.28 KB	-rw-r--r--
nfs4_mount.h	1.89 KB	-rw-r--r--
nfs_fs.h	1.57 KB	-rw-r--r--
nfs_idmap.h	2.19 KB	-rw-r--r--
nfs_mount.h	2.09 KB	-rw-r--r--
nfsacl.h	668 B	-rw-r--r--
nilfs2_api.h	7.41 KB	-rw-r--r--
nilfs2_ondisk.h	17.66 KB	-rw-r--r--
nl80211.h	274.14 KB	-rw-r--r--
nsfs.h	639 B	-rw-r--r--
nubus.h	8 KB	-rw-r--r--
nvme_ioctl.h	1.62 KB	-rw-r--r--
nvram.h	532 B	-rw-r--r--
omap3isp.h	20.36 KB	-rw-r--r--
omapfb.h	5.78 KB	-rw-r--r--
oom.h	511 B	-rw-r--r--
openvswitch.h	36.79 KB	-rw-r--r--
packet_diag.h	1.63 KB	-rw-r--r--
param.h	141 B	-rw-r--r--
parport.h	3.56 KB	-rw-r--r--
patchkey.h	892 B	-rw-r--r--
pci.h	1.35 KB	-rw-r--r--
pci_regs.h	55.89 KB	-rw-r--r--
pcitest.h	711 B	-rw-r--r--
perf_event.h	33.55 KB	-rw-r--r--
personality.h	2.05 KB	-rw-r--r--
pfkeyv2.h	10.32 KB	-rw-r--r--
pg.h	2.34 KB	-rw-r--r--
phantom.h	1.62 KB	-rw-r--r--
phonet.h	4.57 KB	-rw-r--r--
pkt_cls.h	15.08 KB	-rw-r--r--
pkt_sched.h	27.04 KB	-rw-r--r--
pktcdvd.h	2.62 KB	-rw-r--r--
pmu.h	5.32 KB	-rw-r--r--
poll.h	22 B	-rw-r--r--
posix_acl.h	1.22 KB	-rw-r--r--
posix_acl_xattr.h	1.09 KB	-rw-r--r--
posix_types.h	1.07 KB	-rw-r--r--
ppdev.h	3.21 KB	-rw-r--r--
ppp-comp.h	2.47 KB	-rw-r--r--
ppp-ioctl.h	5.31 KB	-rw-r--r--
ppp_defs.h	4.99 KB	-rw-r--r--
pps.h	4.62 KB	-rw-r--r--
pr.h	1.05 KB	-rw-r--r--
prctl.h	7.88 KB	-rw-r--r--
psample.h	798 B	-rw-r--r--
psci.h	4.23 KB	-rw-r--r--
psp-sev.h	3.94 KB	-rw-r--r--
ptp_clock.h	6.57 KB	-rw-r--r--
ptrace.h	4.14 KB	-rw-r--r--
qemu_fw_cfg.h	2.41 KB	-rw-r--r--
qnx4_fs.h	2.27 KB	-rw-r--r--
qnxtypes.h	624 B	-rw-r--r--
qrtr.h	893 B	-rw-r--r--
quota.h	6.14 KB	-rw-r--r--
radeonfb.h	360 B	-rw-r--r--
random.h	1.38 KB	-rw-r--r--
raw.h	365 B	-rw-r--r--
rds.h	10.82 KB	-rw-r--r--
reboot.h	1.31 KB	-rw-r--r--
reiserfs_fs.h	775 B	-rw-r--r--
reiserfs_xattr.h	533 B	-rw-r--r--
resource.h	2.32 KB	-rw-r--r--
rfkill.h	3.6 KB	-rw-r--r--
rio_cm_cdev.h	3.17 KB	-rw-r--r--
rio_mport_cdev.h	9.11 KB	-rw-r--r--
romfs_fs.h	1.21 KB	-rw-r--r--
rose.h	2.18 KB	-rw-r--r--
route.h	2.28 KB	-rw-r--r--
rpmsg.h	544 B	-rw-r--r--
rseq.h	4.79 KB	-rw-r--r--
rtc.h	3.92 KB	-rw-r--r--
rtnetlink.h	18.61 KB	-rw-r--r--
rxrpc.h	4.78 KB	-rw-r--r--
scc.h	4.49 KB	-rw-r--r--
sched.h	4.54 KB	-rw-r--r--
scif_ioctl.h	6.23 KB	-rw-r--r--
screen_info.h	2.42 KB	-rw-r--r--
sctp.h	33.97 KB	-rw-r--r--
sdla.h	2.77 KB	-rw-r--r--
seccomp.h	4.82 KB	-rw-r--r--
securebits.h	2.64 KB	-rw-r--r--
sed-opal.h	3.22 KB	-rw-r--r--
seg6.h	1.14 KB	-rw-r--r--
seg6_genl.h	589 B	-rw-r--r--
seg6_hmac.h	423 B	-rw-r--r--
seg6_iptunnel.h	927 B	-rw-r--r--
seg6_local.h	2.01 KB	-rw-r--r--
selinux_netlink.h	1.17 KB	-rw-r--r--
sem.h	2.97 KB	-rw-r--r--
serial.h	3.78 KB	-rw-r--r--
serial_core.h	6.29 KB	-rw-r--r--
serial_reg.h	15.19 KB	-rw-r--r--
serio.h	2.05 KB	-rw-r--r--
shm.h	3.7 KB	-rw-r--r--
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Code Editor : vfio.h

/* 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_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

/*
 * 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 */
	__u32	num_regions;	/* Max region index + 1 */
	__u32	num_irqs;	/* Max IRQ index + 1 */
};
#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"

/**
 * 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 */
	__u64	size;		/* Region size (bytes) */
	__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 {
	__u64	offset;	/* Offset of mmap'able area within region */
	__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)

/* 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.
 */
#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.
 */
#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)

/*
 * 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.
 */
#define VFIO_REGION_INFO_CAP_NVLINK2_SSATGT	4

struct vfio_region_info_cap_nvlink2_ssatgt {
	struct vfio_info_cap_header header;
	__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.
 */
#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.
 */
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_NUM_IRQS
};

/**
 * VFIO_DEVICE_GET_PCI_HOT_RESET_INFO - _IORW(VFIO_TYPE, VFIO_BASE + 12,
 *					      struct vfio_pci_hot_reset_info)
 *
 * Return: 0 on success, -errno on failure:
 *	-enospc = insufficient buffer, -enodev = unsupported for device.
 */
struct vfio_pci_dependent_device {
	__u32	group_id;
	__u16	segment;
	__u8	bus;
	__u8	devfn; /* Use PCI_SLOT/PCI_FUNC */
};

struct vfio_pci_hot_reset_info {
	__u32	argsz;
	__u32	flags;
	__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)
 *
 * 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 */
	__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 */
	};
};

#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)
	__u64	offset;			/* device fd offset of write */
	__u64	data;			/* data to be written */
	__s32	fd;			/* -1 for de-assignment */
};

#define VFIO_DEVICE_IOEVENTFD		_IO(VFIO_TYPE, VFIO_BASE + 16)

/* -------- 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 */
	__u64	iova_pgsizes;	/* Bitmap of supported page sizes */
	__u32   cap_offset;	/* Offset within info struct of first cap */
};

/*
 * 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 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.
 */
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 */
	__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)

/**
 * 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.
 */
struct vfio_iommu_type1_dma_unmap {
	__u32	argsz;
	__u32	flags;
	__u64	iova;				/* IO virtual address */
	__u64	size;				/* Size of mapping (bytes) */
};

#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)

/* -------- 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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Code Editor : vfio.h