Gecko [ unitednationsplay.com ]

Name	Size	Permission	Date
byteorder	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
caif	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
can	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
dvb	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
hdlc	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
hsi	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
iio	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
isdn	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
mmc	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
netfilter	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
netfilter_arp	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
netfilter_bridge	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
netfilter_ipv4	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
netfilter_ipv6	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
nfsd	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
raid	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
spi	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
sunrpc	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
tc_act	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
tc_ematch	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
usb	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
wimax	[ DIR ]	drwxr-xr-x	2022-01-26 14:48
a.out.h	7.15 KB	-rw-r--r--	2022-01-14 14:10
acct.h	3.58 KB	-rw-r--r--	2022-01-14 14:10
adb.h	1.05 KB	-rw-r--r--	2022-01-14 14:10
adfs_fs.h	873 B	-rw-r--r--	2022-01-14 14:10
affs_hardblocks.h	1.45 KB	-rw-r--r--	2022-01-14 14:10
agpgart.h	3.83 KB	-rw-r--r--	2022-01-14 14:10
aio_abi.h	3.1 KB	-rw-r--r--	2022-01-14 14:10
apm_bios.h	3.46 KB	-rw-r--r--	2022-01-14 14:10
arcfb.h	150 B	-rw-r--r--	2022-01-14 14:10
atalk.h	960 B	-rw-r--r--	2022-01-14 14:10
atm.h	7.64 KB	-rw-r--r--	2022-01-14 14:10
atm_eni.h	585 B	-rw-r--r--	2022-01-14 14:10
atm_he.h	343 B	-rw-r--r--	2022-01-14 14:10
atm_idt77105.h	892 B	-rw-r--r--	2022-01-14 14:10
atm_nicstar.h	1.19 KB	-rw-r--r--	2022-01-14 14:10
atm_tcp.h	1.52 KB	-rw-r--r--	2022-01-14 14:10
atm_zatm.h	1.57 KB	-rw-r--r--	2022-01-14 14:10
atmapi.h	889 B	-rw-r--r--	2022-01-14 14:10
atmarp.h	1.2 KB	-rw-r--r--	2022-01-14 14:10
atmbr2684.h	3.13 KB	-rw-r--r--	2022-01-14 14:10
atmclip.h	513 B	-rw-r--r--	2022-01-14 14:10
atmdev.h	7.44 KB	-rw-r--r--	2022-01-14 14:10
atmioc.h	1.55 KB	-rw-r--r--	2022-01-14 14:10
atmlec.h	2.26 KB	-rw-r--r--	2022-01-14 14:10
atmmpc.h	4.07 KB	-rw-r--r--	2022-01-14 14:10
atmppp.h	576 B	-rw-r--r--	2022-01-14 14:10
atmsap.h	4.79 KB	-rw-r--r--	2022-01-14 14:10
atmsvc.h	1.75 KB	-rw-r--r--	2022-01-14 14:10
audit.h	18.03 KB	-rw-r--r--	2022-01-14 14:10
auto_fs.h	2.53 KB	-rw-r--r--	2022-01-14 14:10
auto_fs4.h	4.3 KB	-rw-r--r--	2022-01-14 14:10
auxvec.h	1.4 KB	-rw-r--r--	2022-01-14 14:10
ax25.h	2.7 KB	-rw-r--r--	2022-01-14 14:10
b1lli.h	1.62 KB	-rw-r--r--	2022-01-14 14:10
baycom.h	820 B	-rw-r--r--	2022-01-14 14:10
bfs_fs.h	1.79 KB	-rw-r--r--	2022-01-14 14:10
binfmts.h	565 B	-rw-r--r--	2022-01-14 14:10
blkpg.h	1.53 KB	-rw-r--r--	2022-01-14 14:10
blktrace_api.h	4.38 KB	-rw-r--r--	2022-01-14 14:10
bpf.h	22.04 KB	-rw-r--r--	2022-01-14 14:10
bpf_common.h	1.2 KB	-rw-r--r--	2022-01-14 14:10
bpf_perf_event.h	453 B	-rw-r--r--	2022-01-14 14:10
bpqether.h	952 B	-rw-r--r--	2022-01-14 14:10
bsg.h	2.37 KB	-rw-r--r--	2022-01-14 14:10
bt-bmc.h	508 B	-rw-r--r--	2022-01-14 14:10
btrfs.h	25.07 KB	-rw-r--r--	2022-01-14 14:10
can.h	5.46 KB	-rw-r--r--	2022-01-14 14:10
capability.h	11.25 KB	-rw-r--r--	2022-01-14 14:10
capi.h	2.99 KB	-rw-r--r--	2022-01-14 14:10
cciss_defs.h	3.14 KB	-rw-r--r--	2022-01-14 14:10
cciss_ioctl.h	2.63 KB	-rw-r--r--	2022-01-14 14:10
cdrom.h	28.12 KB	-rw-r--r--	2022-01-14 14:10
cgroupstats.h	2.1 KB	-rw-r--r--	2022-01-14 14:10
chio.h	5.16 KB	-rw-r--r--	2022-01-14 14:10
cm4000_cs.h	1.68 KB	-rw-r--r--	2022-01-14 14:10
cn_proc.h	3.19 KB	-rw-r--r--	2022-01-14 14:10
coda.h	17.09 KB	-rw-r--r--	2022-01-14 14:10
coda_psdev.h	720 B	-rw-r--r--	2022-01-14 14:10
coff.h	12.12 KB	-rw-r--r--	2022-01-14 14:10
connector.h	2.14 KB	-rw-r--r--	2022-01-14 14:10
const.h	673 B	-rw-r--r--	2022-01-14 14:10
cramfs_fs.h	2.68 KB	-rw-r--r--	2022-01-14 14:10
cuda.h	842 B	-rw-r--r--	2022-01-14 14:10
cyclades.h	16.65 KB	-rw-r--r--	2022-01-14 14:10
cycx_cfm.h	2.86 KB	-rw-r--r--	2022-01-14 14:10
dcbnl.h	24.5 KB	-rw-r--r--	2022-01-14 14:10
dccp.h	6.22 KB	-rw-r--r--	2022-01-14 14:10
devlink.h	9.66 KB	-rw-r--r--	2022-01-14 14:10
dlm.h	2.43 KB	-rw-r--r--	2022-01-14 14:10
dlm_device.h	2.42 KB	-rw-r--r--	2022-01-14 14:10
dlm_netlink.h	1.04 KB	-rw-r--r--	2022-01-14 14:10
dlm_plock.h	831 B	-rw-r--r--	2022-01-14 14:10
dlmconstants.h	4.9 KB	-rw-r--r--	2022-01-14 14:10
dm-ioctl.h	10.55 KB	-rw-r--r--	2022-01-14 14:10
dm-log-userspace.h	14.82 KB	-rw-r--r--	2022-01-14 14:10
dn.h	4.42 KB	-rw-r--r--	2022-01-14 14:10
dqblk_xfs.h	8.72 KB	-rw-r--r--	2022-01-14 14:10
edd.h	5.41 KB	-rw-r--r--	2022-01-14 14:10
efs_fs_sb.h	2.11 KB	-rw-r--r--	2022-01-14 14:10
elf-em.h	1.83 KB	-rw-r--r--	2022-01-14 14:10
elf-fdpic.h	1.04 KB	-rw-r--r--	2022-01-14 14:10
elf.h	12.69 KB	-rw-r--r--	2022-01-14 14:10
elfcore.h	2.86 KB	-rw-r--r--	2022-01-14 14:10
errno.h	23 B	-rw-r--r--	2022-01-14 14:10
errqueue.h	1.1 KB	-rw-r--r--	2022-01-14 14:10
ethtool.h	71.11 KB	-rw-r--r--	2022-01-14 14:10
eventpoll.h	1.76 KB	-rw-r--r--	2022-01-14 14:10
fadvise.h	779 B	-rw-r--r--	2022-01-14 14:10
falloc.h	2.72 KB	-rw-r--r--	2022-01-14 14:10
fanotify.h	3.52 KB	-rw-r--r--	2022-01-14 14:10
fb.h	16 KB	-rw-r--r--	2022-01-14 14:10
fcntl.h	2.16 KB	-rw-r--r--	2022-01-14 14:10
fd.h	11.31 KB	-rw-r--r--	2022-01-14 14:10
fdreg.h	5.23 KB	-rw-r--r--	2022-01-14 14:10
fib_rules.h	1.58 KB	-rw-r--r--	2022-01-14 14:10
fiemap.h	2.65 KB	-rw-r--r--	2022-01-14 14:10
filter.h	1.99 KB	-rw-r--r--	2022-01-14 14:10
firewire-cdev.h	42.86 KB	-rw-r--r--	2022-01-14 14:10
firewire-constants.h	3.16 KB	-rw-r--r--	2022-01-14 14:10
flat.h	2.04 KB	-rw-r--r--	2022-01-14 14:10
fou.h	617 B	-rw-r--r--	2022-01-14 14:10
fs.h	8.47 KB	-rw-r--r--	2022-01-14 14:10
fsl_hypervisor.h	7.05 KB	-rw-r--r--	2022-01-14 14:10
fuse.h	16.41 KB	-rw-r--r--	2022-01-14 14:10
futex.h	4.81 KB	-rw-r--r--	2022-01-14 14:10
gameport.h	834 B	-rw-r--r--	2022-01-14 14:10
gen_stats.h	1.5 KB	-rw-r--r--	2022-01-14 14:10
genetlink.h	1.82 KB	-rw-r--r--	2022-01-14 14:10
gfs2_ondisk.h	12 KB	-rw-r--r--	2022-01-14 14:10
gigaset_dev.h	1.35 KB	-rw-r--r--	2022-01-14 14:10
hdlc.h	574 B	-rw-r--r--	2022-01-14 14:10
hdlcdrv.h	2.78 KB	-rw-r--r--	2022-01-14 14:10
hdreg.h	22.11 KB	-rw-r--r--	2022-01-14 14:10
hid.h	1.79 KB	-rw-r--r--	2022-01-14 14:10
hiddev.h	6.13 KB	-rw-r--r--	2022-01-14 14:10
hidraw.h	1.41 KB	-rw-r--r--	2022-01-14 14:10
hpet.h	680 B	-rw-r--r--	2022-01-14 14:10
hw_breakpoint.h	679 B	-rw-r--r--	2022-01-14 14:10
hyperv.h	10.22 KB	-rw-r--r--	2022-01-14 14:10
hysdn_if.h	1.29 KB	-rw-r--r--	2022-01-14 14:10
i2c-dev.h	2.37 KB	-rw-r--r--	2022-01-14 14:10
i2c.h	6.66 KB	-rw-r--r--	2022-01-14 14:10
i2o-dev.h	11.22 KB	-rw-r--r--	2022-01-14 14:10
i8k.h	1.4 KB	-rw-r--r--	2022-01-14 14:10
icmp.h	2.82 KB	-rw-r--r--	2022-01-14 14:10
icmpv6.h	3.82 KB	-rw-r--r--	2022-01-14 14:10
if.h	9.26 KB	-rw-r--r--	2022-01-14 14:10
if_addr.h	1.7 KB	-rw-r--r--	2022-01-14 14:10
if_addrlabel.h	658 B	-rw-r--r--	2022-01-14 14:10
if_alg.h	816 B	-rw-r--r--	2022-01-14 14:10
if_arcnet.h	3.63 KB	-rw-r--r--	2022-01-14 14:10
if_arp.h	6.3 KB	-rw-r--r--	2022-01-14 14:10
if_bonding.h	4.66 KB	-rw-r--r--	2022-01-14 14:10
if_bridge.h	6.46 KB	-rw-r--r--	2022-01-14 14:10
if_cablemodem.h	922 B	-rw-r--r--	2022-01-14 14:10
if_eql.h	1.26 KB	-rw-r--r--	2022-01-14 14:10
if_ether.h	7.25 KB	-rw-r--r--	2022-01-14 14:10
if_fc.h	1.63 KB	-rw-r--r--	2022-01-14 14:10
if_fddi.h	3.6 KB	-rw-r--r--	2022-01-14 14:10
if_frad.h	2.89 KB	-rw-r--r--	2022-01-14 14:10
if_hippi.h	4.07 KB	-rw-r--r--	2022-01-14 14:10
if_infiniband.h	1.13 KB	-rw-r--r--	2022-01-14 14:10
if_link.h	19.58 KB	-rw-r--r--	2022-01-14 14:10
if_ltalk.h	147 B	-rw-r--r--	2022-01-14 14:10
if_macsec.h	5.42 KB	-rw-r--r--	2022-01-14 14:10
if_packet.h	7.15 KB	-rw-r--r--	2022-01-14 14:10
if_phonet.h	361 B	-rw-r--r--	2022-01-14 14:10
if_plip.h	596 B	-rw-r--r--	2022-01-14 14:10
if_ppp.h	29 B	-rw-r--r--	2022-01-14 14:10
if_pppol2tp.h	3.18 KB	-rw-r--r--	2022-01-14 14:10
if_pppox.h	4.64 KB	-rw-r--r--	2022-01-14 14:10
if_slip.h	809 B	-rw-r--r--	2022-01-14 14:10
if_team.h	2.48 KB	-rw-r--r--	2022-01-14 14:10
if_tun.h	3.71 KB	-rw-r--r--	2022-01-14 14:10
if_tunnel.h	3.03 KB	-rw-r--r--	2022-01-14 14:10
if_vlan.h	1.69 KB	-rw-r--r--	2022-01-14 14:10
if_x25.h	817 B	-rw-r--r--	2022-01-14 14:10
ife.h	288 B	-rw-r--r--	2022-01-14 14:10
igmp.h	2.88 KB	-rw-r--r--	2022-01-14 14:10
in.h	9.36 KB	-rw-r--r--	2022-01-14 14:10
in6.h	6.97 KB	-rw-r--r--	2022-01-14 14:10
in_route.h	873 B	-rw-r--r--	2022-01-14 14:10
inet_diag.h	2.77 KB	-rw-r--r--	2022-01-14 14:10
inotify.h	2.85 KB	-rw-r--r--	2022-01-14 14:10
input.h	32.52 KB	-rw-r--r--	2022-01-14 14:10
ioctl.h	100 B	-rw-r--r--	2022-01-14 14:10
ip.h	3.47 KB	-rw-r--r--	2022-01-14 14:10
ip6_tunnel.h	1.67 KB	-rw-r--r--	2022-01-14 14:10
ip_vs.h	12.77 KB	-rw-r--r--	2022-01-14 14:10
ipc.h	1.99 KB	-rw-r--r--	2022-01-14 14:10
ipmi.h	14.63 KB	-rw-r--r--	2022-01-14 14:10
ipmi_msgdefs.h	3.21 KB	-rw-r--r--	2022-01-14 14:10
ipsec.h	884 B	-rw-r--r--	2022-01-14 14:10
ipv6.h	3.66 KB	-rw-r--r--	2022-01-14 14:10
ipv6_route.h	1.73 KB	-rw-r--r--	2022-01-14 14:10
ipx.h	1.79 KB	-rw-r--r--	2022-01-14 14:10
irda.h	7.31 KB	-rw-r--r--	2022-01-14 14:10
irqnr.h	104 B	-rw-r--r--	2022-01-14 14:10
isdn.h	5.58 KB	-rw-r--r--	2022-01-14 14:10
isdn_divertif.h	1.11 KB	-rw-r--r--	2022-01-14 14:10
isdn_ppp.h	1.82 KB	-rw-r--r--	2022-01-14 14:10
isdnif.h	2.25 KB	-rw-r--r--	2022-01-14 14:10
iso_fs.h	6.29 KB	-rw-r--r--	2022-01-14 14:10
ivtv.h	2.89 KB	-rw-r--r--	2022-01-14 14:10
ivtvfb.h	1.12 KB	-rw-r--r--	2022-01-14 14:10
ixjuser.h	24.53 KB	-rw-r--r--	2022-01-14 14:10
jffs2.h	6.85 KB	-rw-r--r--	2022-01-14 14:10
joystick.h	3.5 KB	-rw-r--r--	2022-01-14 14:10
kd.h	6.04 KB	-rw-r--r--	2022-01-14 14:10
kdev_t.h	320 B	-rw-r--r--	2022-01-14 14:10
kernel-page-flags.h	788 B	-rw-r--r--	2022-01-14 14:10
kernel.h	375 B	-rw-r--r--	2022-01-14 14:10
kernelcapi.h	956 B	-rw-r--r--	2022-01-14 14:10
kexec.h	1.92 KB	-rw-r--r--	2022-01-14 14:10
keyboard.h	12.42 KB	-rw-r--r--	2022-01-14 14:10
keyctl.h	2.98 KB	-rw-r--r--	2022-01-14 14:10
kvm.h	33.84 KB	-rw-r--r--	2022-01-14 14:10
kvm_para.h	819 B	-rw-r--r--	2022-01-14 14:10
l2tp.h	4.98 KB	-rw-r--r--	2022-01-14 14:10
libc-compat.h	4.03 KB	-rw-r--r--	2022-01-14 14:10
limits.h	874 B	-rw-r--r--	2022-01-14 14:10
llc.h	2.98 KB	-rw-r--r--	2022-01-14 14:10
loop.h	2.31 KB	-rw-r--r--	2022-01-14 14:10
lp.h	3.72 KB	-rw-r--r--	2022-01-14 14:10
lwtunnel.h	839 B	-rw-r--r--	2022-01-14 14:10
magic.h	2.9 KB	-rw-r--r--	2022-01-14 14:10
major.h	4.48 KB	-rw-r--r--	2022-01-14 14:10
map_to_7segment.h	7.02 KB	-rw-r--r--	2022-01-14 14:10
matroxfb.h	1.37 KB	-rw-r--r--	2022-01-14 14:10
mdio.h	13.74 KB	-rw-r--r--	2022-01-14 14:10
media.h	3.5 KB	-rw-r--r--	2022-01-14 14:10
mei.h	4.62 KB	-rw-r--r--	2022-01-14 14:10
membarrier.h	7.71 KB	-rw-r--r--	2022-01-14 14:10
memfd.h	186 B	-rw-r--r--	2022-01-14 14:10
mempolicy.h	2.35 KB	-rw-r--r--	2022-01-14 14:10
meye.h	2.41 KB	-rw-r--r--	2022-01-14 14:10
mii.h	7.76 KB	-rw-r--r--	2022-01-14 14:10
minix_fs.h	2.01 KB	-rw-r--r--	2022-01-14 14:10
mman.h	230 B	-rw-r--r--	2022-01-14 14:10
mmtimer.h	2.01 KB	-rw-r--r--	2022-01-14 14:10
mpls.h	1.33 KB	-rw-r--r--	2022-01-14 14:10
mqueue.h	2.01 KB	-rw-r--r--	2022-01-14 14:10
mroute.h	4.06 KB	-rw-r--r--	2022-01-14 14:10
mroute6.h	4.08 KB	-rw-r--r--	2022-01-14 14:10
msdos_fs.h	6.28 KB	-rw-r--r--	2022-01-14 14:10
msg.h	3.21 KB	-rw-r--r--	2022-01-14 14:10
mtio.h	7.92 KB	-rw-r--r--	2022-01-14 14:10
n_r3964.h	2.29 KB	-rw-r--r--	2022-01-14 14:10
nbd.h	2.34 KB	-rw-r--r--	2022-01-14 14:10
ncp.h	4.94 KB	-rw-r--r--	2022-01-14 14:10
ncp_fs.h	3.27 KB	-rw-r--r--	2022-01-14 14:10
ncp_mount.h	2.06 KB	-rw-r--r--	2022-01-14 14:10
ncp_no.h	651 B	-rw-r--r--	2022-01-14 14:10
ndctl.h	6.6 KB	-rw-r--r--	2022-01-14 14:10
neighbour.h	4.17 KB	-rw-r--r--	2022-01-14 14:10
net.h	1.97 KB	-rw-r--r--	2022-01-14 14:10
net_dropmon.h	1.07 KB	-rw-r--r--	2022-01-14 14:10
net_namespace.h	609 B	-rw-r--r--	2022-01-14 14:10
net_tstamp.h	4.06 KB	-rw-r--r--	2022-01-14 14:10
netconf.h	423 B	-rw-r--r--	2022-01-14 14:10
netdevice.h	1.46 KB	-rw-r--r--	2022-01-14 14:10
netfilter.h	1.6 KB	-rw-r--r--	2022-01-14 14:10
netfilter_arp.h	380 B	-rw-r--r--	2022-01-14 14:10
netfilter_bridge.h	768 B	-rw-r--r--	2022-01-14 14:10
netfilter_decnet.h	1.83 KB	-rw-r--r--	2022-01-14 14:10
netfilter_ipv4.h	2.02 KB	-rw-r--r--	2022-01-14 14:10
netfilter_ipv6.h	2.04 KB	-rw-r--r--	2022-01-14 14:10
netlink.h	6.13 KB	-rw-r--r--	2022-01-14 14:10
netlink_diag.h	1005 B	-rw-r--r--	2022-01-14 14:10
netrom.h	744 B	-rw-r--r--	2022-01-14 14:10
nfc.h	7.72 KB	-rw-r--r--	2022-01-14 14:10
nfs.h	4.31 KB	-rw-r--r--	2022-01-14 14:10
nfs2.h	1.37 KB	-rw-r--r--	2022-01-14 14:10
nfs3.h	2.24 KB	-rw-r--r--	2022-01-14 14:10
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Rename

/*
 * 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

#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 */
	__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"

/**
 * 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 */
};

#define VFIO_REGION_TYPE_PCI_VENDOR_TYPE	(1 << 31)
#define VFIO_REGION_TYPE_PCI_VENDOR_MASK	(0xffff)

#define VFIO_REGION_SUBTYPE_INTEL_IGD_OPREGION	(1)

/**
 * 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
};

/**
 * 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)

/* -------- 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 */
	__u64	iova_pgsizes;		/* Bitmap of supported page sizes */
};

#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.
 */
struct vfio_eeh_pe_op {
	__u32 argsz;
	__u32 flags;
	__u32 op;
};

#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_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;
	__u64 window_size;
	__u32 levels;
	/* 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 */