File Manager

X7ROOT File Manager

Current Path: /usr/include/linux

📁 ..
📄 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(11.23 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(22.77 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(8.56 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(101.42 KB)
📄 ethtool_netlink.h(6.17 KB)
📄 ethtool_netlink_generated.h(19.17 KB)
📄 eventfd.h(264 B)
📄 eventpoll.h(2.84 KB)
📄 f2fs.h(3.22 KB)
📄 fadvise.h(842 B)
📄 falloc.h(3.56 KB)
📄 fanotify.h(7.7 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(20.27 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(52.92 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(5.29 KB)
📄 ife.h(351 B)
📄 igmp.h(2.99 KB)
📁 iio
📄 ila.h(1.22 KB)
📄 in.h(10.24 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(36.45 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(57.06 KB)
📄 kfd_sysfs.h(5.25 KB)
📄 kvm.h(47.24 KB)
📄 kvm_para.h(1001 B)
📄 l2tp.h(5.61 KB)
📄 landlock.h(11.55 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)
📄 mshv.h(7.93 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_shaper.h(2.52 KB)
📄 net_tstamp.h(6.3 KB)
📄 netconf.h(614 B)
📄 netdev.h(5.65 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(341.33 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(40.75 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(61.89 KB)
📄 pcitest.h(920 B)
📄 perf_event.h(42.68 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(28.75 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(5.21 KB)
📄 psp-dbc.h(5.16 KB)
📄 psp-sev.h(7.59 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(8.46 KB)
📄 smc_diag.h(2.88 KB)
📄 smiapp.h(1.03 KB)
📄 snmp.h(14.01 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(70.13 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(99.3 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)

Editing: iommufd.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/* Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES.
 */
#ifndef _IOMMUFD_H
#define _IOMMUFD_H

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

#define IOMMUFD_TYPE (';')

/**
 * DOC: General ioctl format
 *
 * The ioctl interface follows a general format to allow for extensibility. Each
 * ioctl is passed in a structure pointer as the argument providing the size of
 * the structure in the first u32. The kernel checks that any structure space
 * beyond what it understands is 0. This allows userspace to use the backward
 * compatible portion while consistently using the newer, larger, structures.
 *
 * ioctls use a standard meaning for common errnos:
 *
 *  - ENOTTY: The IOCTL number itself is not supported at all
 *  - E2BIG: The IOCTL number is supported, but the provided structure has
 *    non-zero in a part the kernel does not understand.
 *  - EOPNOTSUPP: The IOCTL number is supported, and the structure is
 *    understood, however a known field has a value the kernel does not
 *    understand or support.
 *  - EINVAL: Everything about the IOCTL was understood, but a field is not
 *    correct.
 *  - ENOENT: An ID or IOVA provided does not exist.
 *  - ENOMEM: Out of memory.
 *  - EOVERFLOW: Mathematics overflowed.
 *
 * As well as additional errnos, within specific ioctls.
 */
enum {
	IOMMUFD_CMD_BASE = 0x80,
	IOMMUFD_CMD_DESTROY = IOMMUFD_CMD_BASE,
	IOMMUFD_CMD_IOAS_ALLOC = 0x81,
	IOMMUFD_CMD_IOAS_ALLOW_IOVAS = 0x82,
	IOMMUFD_CMD_IOAS_COPY = 0x83,
	IOMMUFD_CMD_IOAS_IOVA_RANGES = 0x84,
	IOMMUFD_CMD_IOAS_MAP = 0x85,
	IOMMUFD_CMD_IOAS_UNMAP = 0x86,
	IOMMUFD_CMD_OPTION = 0x87,
	IOMMUFD_CMD_VFIO_IOAS = 0x88,
	IOMMUFD_CMD_HWPT_ALLOC = 0x89,
	IOMMUFD_CMD_GET_HW_INFO = 0x8a,
	IOMMUFD_CMD_HWPT_SET_DIRTY_TRACKING = 0x8b,
	IOMMUFD_CMD_HWPT_GET_DIRTY_BITMAP = 0x8c,
	IOMMUFD_CMD_HWPT_INVALIDATE = 0x8d,
	IOMMUFD_CMD_FAULT_QUEUE_ALLOC = 0x8e,
	IOMMUFD_CMD_IOAS_MAP_FILE = 0x8f,
	IOMMUFD_CMD_VIOMMU_ALLOC = 0x90,
	IOMMUFD_CMD_VDEVICE_ALLOC = 0x91,
	IOMMUFD_CMD_IOAS_CHANGE_PROCESS = 0x92,
};

/**
 * struct iommu_destroy - ioctl(IOMMU_DESTROY)
 * @size: sizeof(struct iommu_destroy)
 * @id: iommufd object ID to destroy. Can be any destroyable object type.
 *
 * Destroy any object held within iommufd.
 */
struct iommu_destroy {
	__u32 size;
	__u32 id;
};
#define IOMMU_DESTROY _IO(IOMMUFD_TYPE, IOMMUFD_CMD_DESTROY)

/**
 * struct iommu_ioas_alloc - ioctl(IOMMU_IOAS_ALLOC)
 * @size: sizeof(struct iommu_ioas_alloc)
 * @flags: Must be 0
 * @out_ioas_id: Output IOAS ID for the allocated object
 *
 * Allocate an IO Address Space (IOAS) which holds an IO Virtual Address (IOVA)
 * to memory mapping.
 */
struct iommu_ioas_alloc {
	__u32 size;
	__u32 flags;
	__u32 out_ioas_id;
};
#define IOMMU_IOAS_ALLOC _IO(IOMMUFD_TYPE, IOMMUFD_CMD_IOAS_ALLOC)

/**
 * struct iommu_iova_range - ioctl(IOMMU_IOVA_RANGE)
 * @start: First IOVA
 * @last: Inclusive last IOVA
 *
 * An interval in IOVA space.
 */
struct iommu_iova_range {
	__aligned_u64 start;
	__aligned_u64 last;
};

/**
 * struct iommu_ioas_iova_ranges - ioctl(IOMMU_IOAS_IOVA_RANGES)
 * @size: sizeof(struct iommu_ioas_iova_ranges)
 * @ioas_id: IOAS ID to read ranges from
 * @num_iovas: Input/Output total number of ranges in the IOAS
 * @__reserved: Must be 0
 * @allowed_iovas: Pointer to the output array of struct iommu_iova_range
 * @out_iova_alignment: Minimum alignment required for mapping IOVA
 *
 * Query an IOAS for ranges of allowed IOVAs. Mapping IOVA outside these ranges
 * is not allowed. num_iovas will be set to the total number of iovas and
 * the allowed_iovas[] will be filled in as space permits.
 *
 * The allowed ranges are dependent on the HW path the DMA operation takes, and
 * can change during the lifetime of the IOAS. A fresh empty IOAS will have a
 * full range, and each attached device will narrow the ranges based on that
 * device's HW restrictions. Detaching a device can widen the ranges. Userspace
 * should query ranges after every attach/detach to know what IOVAs are valid
 * for mapping.
 *
 * On input num_iovas is the length of the allowed_iovas array. On output it is
 * the total number of iovas filled in. The ioctl will return -EMSGSIZE and set
 * num_iovas to the required value if num_iovas is too small. In this case the
 * caller should allocate a larger output array and re-issue the ioctl.
 *
 * out_iova_alignment returns the minimum IOVA alignment that can be given
 * to IOMMU_IOAS_MAP/COPY. IOVA's must satisfy::
 *
 *   starting_iova % out_iova_alignment == 0
 *   (starting_iova + length) % out_iova_alignment == 0
 *
 * out_iova_alignment can be 1 indicating any IOVA is allowed. It cannot
 * be higher than the system PAGE_SIZE.
 */
struct iommu_ioas_iova_ranges {
	__u32 size;
	__u32 ioas_id;
	__u32 num_iovas;
	__u32 __reserved;
	__aligned_u64 allowed_iovas;
	__aligned_u64 out_iova_alignment;
};
#define IOMMU_IOAS_IOVA_RANGES _IO(IOMMUFD_TYPE, IOMMUFD_CMD_IOAS_IOVA_RANGES)

/**
 * struct iommu_ioas_allow_iovas - ioctl(IOMMU_IOAS_ALLOW_IOVAS)
 * @size: sizeof(struct iommu_ioas_allow_iovas)
 * @ioas_id: IOAS ID to allow IOVAs from
 * @num_iovas: Input/Output total number of ranges in the IOAS
 * @__reserved: Must be 0
 * @allowed_iovas: Pointer to array of struct iommu_iova_range
 *
 * Ensure a range of IOVAs are always available for allocation. If this call
 * succeeds then IOMMU_IOAS_IOVA_RANGES will never return a list of IOVA ranges
 * that are narrower than the ranges provided here. This call will fail if
 * IOMMU_IOAS_IOVA_RANGES is currently narrower than the given ranges.
 *
 * When an IOAS is first created the IOVA_RANGES will be maximally sized, and as
 * devices are attached the IOVA will narrow based on the device restrictions.
 * When an allowed range is specified any narrowing will be refused, ie device
 * attachment can fail if the device requires limiting within the allowed range.
 *
 * Automatic IOVA allocation is also impacted by this call. MAP will only
 * allocate within the allowed IOVAs if they are present.
 *
 * This call replaces the entire allowed list with the given list.
 */
struct iommu_ioas_allow_iovas {
	__u32 size;
	__u32 ioas_id;
	__u32 num_iovas;
	__u32 __reserved;
	__aligned_u64 allowed_iovas;
};
#define IOMMU_IOAS_ALLOW_IOVAS _IO(IOMMUFD_TYPE, IOMMUFD_CMD_IOAS_ALLOW_IOVAS)

/**
 * enum iommufd_ioas_map_flags - Flags for map and copy
 * @IOMMU_IOAS_MAP_FIXED_IOVA: If clear the kernel will compute an appropriate
 *                             IOVA to place the mapping at
 * @IOMMU_IOAS_MAP_WRITEABLE: DMA is allowed to write to this mapping
 * @IOMMU_IOAS_MAP_READABLE: DMA is allowed to read from this mapping
 */
enum iommufd_ioas_map_flags {
	IOMMU_IOAS_MAP_FIXED_IOVA = 1 << 0,
	IOMMU_IOAS_MAP_WRITEABLE = 1 << 1,
	IOMMU_IOAS_MAP_READABLE = 1 << 2,
};

/**
 * struct iommu_ioas_map - ioctl(IOMMU_IOAS_MAP)
 * @size: sizeof(struct iommu_ioas_map)
 * @flags: Combination of enum iommufd_ioas_map_flags
 * @ioas_id: IOAS ID to change the mapping of
 * @__reserved: Must be 0
 * @user_va: Userspace pointer to start mapping from
 * @length: Number of bytes to map
 * @iova: IOVA the mapping was placed at. If IOMMU_IOAS_MAP_FIXED_IOVA is set
 *        then this must be provided as input.
 *
 * Set an IOVA mapping from a user pointer. If FIXED_IOVA is specified then the
 * mapping will be established at iova, otherwise a suitable location based on
 * the reserved and allowed lists will be automatically selected and returned in
 * iova.
 *
 * If IOMMU_IOAS_MAP_FIXED_IOVA is specified then the iova range must currently
 * be unused, existing IOVA cannot be replaced.
 */
struct iommu_ioas_map {
	__u32 size;
	__u32 flags;
	__u32 ioas_id;
	__u32 __reserved;
	__aligned_u64 user_va;
	__aligned_u64 length;
	__aligned_u64 iova;
};
#define IOMMU_IOAS_MAP _IO(IOMMUFD_TYPE, IOMMUFD_CMD_IOAS_MAP)

/**
 * struct iommu_ioas_map_file - ioctl(IOMMU_IOAS_MAP_FILE)
 * @size: sizeof(struct iommu_ioas_map_file)
 * @flags: same as for iommu_ioas_map
 * @ioas_id: same as for iommu_ioas_map
 * @fd: the memfd to map
 * @start: byte offset from start of file to map from
 * @length: same as for iommu_ioas_map
 * @iova: same as for iommu_ioas_map
 *
 * Set an IOVA mapping from a memfd file.  All other arguments and semantics
 * match those of IOMMU_IOAS_MAP.
 */
struct iommu_ioas_map_file {
	__u32 size;
	__u32 flags;
	__u32 ioas_id;
	__s32 fd;
	__aligned_u64 start;
	__aligned_u64 length;
	__aligned_u64 iova;
};
#define IOMMU_IOAS_MAP_FILE _IO(IOMMUFD_TYPE, IOMMUFD_CMD_IOAS_MAP_FILE)

/**
 * struct iommu_ioas_copy - ioctl(IOMMU_IOAS_COPY)
 * @size: sizeof(struct iommu_ioas_copy)
 * @flags: Combination of enum iommufd_ioas_map_flags
 * @dst_ioas_id: IOAS ID to change the mapping of
 * @src_ioas_id: IOAS ID to copy from
 * @length: Number of bytes to copy and map
 * @dst_iova: IOVA the mapping was placed at. If IOMMU_IOAS_MAP_FIXED_IOVA is
 *            set then this must be provided as input.
 * @src_iova: IOVA to start the copy
 *
 * Copy an already existing mapping from src_ioas_id and establish it in
 * dst_ioas_id. The src iova/length must exactly match a range used with
 * IOMMU_IOAS_MAP.
 *
 * This may be used to efficiently clone a subset of an IOAS to another, or as a
 * kind of 'cache' to speed up mapping. Copy has an efficiency advantage over
 * establishing equivalent new mappings, as internal resources are shared, and
 * the kernel will pin the user memory only once.
 */
struct iommu_ioas_copy {
	__u32 size;
	__u32 flags;
	__u32 dst_ioas_id;
	__u32 src_ioas_id;
	__aligned_u64 length;
	__aligned_u64 dst_iova;
	__aligned_u64 src_iova;
};
#define IOMMU_IOAS_COPY _IO(IOMMUFD_TYPE, IOMMUFD_CMD_IOAS_COPY)

/**
 * struct iommu_ioas_unmap - ioctl(IOMMU_IOAS_UNMAP)
 * @size: sizeof(struct iommu_ioas_unmap)
 * @ioas_id: IOAS ID to change the mapping of
 * @iova: IOVA to start the unmapping at
 * @length: Number of bytes to unmap, and return back the bytes unmapped
 *
 * Unmap an IOVA range. The iova/length must be a superset of a previously
 * mapped range used with IOMMU_IOAS_MAP or IOMMU_IOAS_COPY. Splitting or
 * truncating ranges is not allowed. The values 0 to U64_MAX will unmap
 * everything.
 */
struct iommu_ioas_unmap {
	__u32 size;
	__u32 ioas_id;
	__aligned_u64 iova;
	__aligned_u64 length;
};
#define IOMMU_IOAS_UNMAP _IO(IOMMUFD_TYPE, IOMMUFD_CMD_IOAS_UNMAP)

/**
 * enum iommufd_option - ioctl(IOMMU_OPTION_RLIMIT_MODE) and
 *                       ioctl(IOMMU_OPTION_HUGE_PAGES)
 * @IOMMU_OPTION_RLIMIT_MODE:
 *    Change how RLIMIT_MEMLOCK accounting works. The caller must have privilege
 *    to invoke this. Value 0 (default) is user based accounting, 1 uses process
 *    based accounting. Global option, object_id must be 0
 * @IOMMU_OPTION_HUGE_PAGES:
 *    Value 1 (default) allows contiguous pages to be combined when generating
 *    iommu mappings. Value 0 disables combining, everything is mapped to
 *    PAGE_SIZE. This can be useful for benchmarking.  This is a per-IOAS
 *    option, the object_id must be the IOAS ID.
 */
enum iommufd_option {
	IOMMU_OPTION_RLIMIT_MODE = 0,
	IOMMU_OPTION_HUGE_PAGES = 1,
};

/**
 * enum iommufd_option_ops - ioctl(IOMMU_OPTION_OP_SET) and
 *                           ioctl(IOMMU_OPTION_OP_GET)
 * @IOMMU_OPTION_OP_SET: Set the option's value
 * @IOMMU_OPTION_OP_GET: Get the option's value
 */
enum iommufd_option_ops {
	IOMMU_OPTION_OP_SET = 0,
	IOMMU_OPTION_OP_GET = 1,
};

/**
 * struct iommu_option - iommu option multiplexer
 * @size: sizeof(struct iommu_option)
 * @option_id: One of enum iommufd_option
 * @op: One of enum iommufd_option_ops
 * @__reserved: Must be 0
 * @object_id: ID of the object if required
 * @val64: Option value to set or value returned on get
 *
 * Change a simple option value. This multiplexor allows controlling options
 * on objects. IOMMU_OPTION_OP_SET will load an option and IOMMU_OPTION_OP_GET
 * will return the current value.
 */
struct iommu_option {
	__u32 size;
	__u32 option_id;
	__u16 op;
	__u16 __reserved;
	__u32 object_id;
	__aligned_u64 val64;
};
#define IOMMU_OPTION _IO(IOMMUFD_TYPE, IOMMUFD_CMD_OPTION)

/**
 * enum iommufd_vfio_ioas_op - IOMMU_VFIO_IOAS_* ioctls
 * @IOMMU_VFIO_IOAS_GET: Get the current compatibility IOAS
 * @IOMMU_VFIO_IOAS_SET: Change the current compatibility IOAS
 * @IOMMU_VFIO_IOAS_CLEAR: Disable VFIO compatibility
 */
enum iommufd_vfio_ioas_op {
	IOMMU_VFIO_IOAS_GET = 0,
	IOMMU_VFIO_IOAS_SET = 1,
	IOMMU_VFIO_IOAS_CLEAR = 2,
};

/**
 * struct iommu_vfio_ioas - ioctl(IOMMU_VFIO_IOAS)
 * @size: sizeof(struct iommu_vfio_ioas)
 * @ioas_id: For IOMMU_VFIO_IOAS_SET the input IOAS ID to set
 *           For IOMMU_VFIO_IOAS_GET will output the IOAS ID
 * @op: One of enum iommufd_vfio_ioas_op
 * @__reserved: Must be 0
 *
 * The VFIO compatibility support uses a single ioas because VFIO APIs do not
 * support the ID field. Set or Get the IOAS that VFIO compatibility will use.
 * When VFIO_GROUP_SET_CONTAINER is used on an iommufd it will get the
 * compatibility ioas, either by taking what is already set, or auto creating
 * one. From then on VFIO will continue to use that ioas and is not effected by
 * this ioctl. SET or CLEAR does not destroy any auto-created IOAS.
 */
struct iommu_vfio_ioas {
	__u32 size;
	__u32 ioas_id;
	__u16 op;
	__u16 __reserved;
};
#define IOMMU_VFIO_IOAS _IO(IOMMUFD_TYPE, IOMMUFD_CMD_VFIO_IOAS)

/**
 * enum iommufd_hwpt_alloc_flags - Flags for HWPT allocation
 * @IOMMU_HWPT_ALLOC_NEST_PARENT: If set, allocate a HWPT that can serve as
 *                                the parent HWPT in a nesting configuration.
 * @IOMMU_HWPT_ALLOC_DIRTY_TRACKING: Dirty tracking support for device IOMMU is
 *                                   enforced on device attachment
 * @IOMMU_HWPT_FAULT_ID_VALID: The fault_id field of hwpt allocation data is
 *                             valid.
 * @IOMMU_HWPT_ALLOC_PASID: Requests a domain that can be used with PASID. The
 *                          domain can be attached to any PASID on the device.
 *                          Any domain attached to the non-PASID part of the
 *                          device must also be flagged, otherwise attaching a
 *                          PASID will blocked.
 *                          If IOMMU does not support PASID it will return
 *                          error (-EOPNOTSUPP).
 */
enum iommufd_hwpt_alloc_flags {
	IOMMU_HWPT_ALLOC_NEST_PARENT = 1 << 0,
	IOMMU_HWPT_ALLOC_DIRTY_TRACKING = 1 << 1,
	IOMMU_HWPT_FAULT_ID_VALID = 1 << 2,
	IOMMU_HWPT_ALLOC_PASID = 1 << 3,
};

/**
 * enum iommu_hwpt_vtd_s1_flags - Intel VT-d stage-1 page table
 *                                entry attributes
 * @IOMMU_VTD_S1_SRE: Supervisor request
 * @IOMMU_VTD_S1_EAFE: Extended access enable
 * @IOMMU_VTD_S1_WPE: Write protect enable
 */
enum iommu_hwpt_vtd_s1_flags {
	IOMMU_VTD_S1_SRE = 1 << 0,
	IOMMU_VTD_S1_EAFE = 1 << 1,
	IOMMU_VTD_S1_WPE = 1 << 2,
};

/**
 * struct iommu_hwpt_vtd_s1 - Intel VT-d stage-1 page table
 *                            info (IOMMU_HWPT_DATA_VTD_S1)
 * @flags: Combination of enum iommu_hwpt_vtd_s1_flags
 * @pgtbl_addr: The base address of the stage-1 page table.
 * @addr_width: The address width of the stage-1 page table
 * @__reserved: Must be 0
 */
struct iommu_hwpt_vtd_s1 {
	__aligned_u64 flags;
	__aligned_u64 pgtbl_addr;
	__u32 addr_width;
	__u32 __reserved;
};

/**
 * struct iommu_hwpt_arm_smmuv3 - ARM SMMUv3 nested STE
 *                                (IOMMU_HWPT_DATA_ARM_SMMUV3)
 *
 * @ste: The first two double words of the user space Stream Table Entry for
 *       the translation. Must be little-endian.
 *       Allowed fields: (Refer to "5.2 Stream Table Entry" in SMMUv3 HW Spec)
 *       - word-0: V, Cfg, S1Fmt, S1ContextPtr, S1CDMax
 *       - word-1: EATS, S1DSS, S1CIR, S1COR, S1CSH, S1STALLD
 *
 * -EIO will be returned if @ste is not legal or contains any non-allowed field.
 * Cfg can be used to select a S1, Bypass or Abort configuration. A Bypass
 * nested domain will translate the same as the nesting parent. The S1 will
 * install a Context Descriptor Table pointing at userspace memory translated
 * by the nesting parent.
 */
struct iommu_hwpt_arm_smmuv3 {
	__aligned_le64 ste[2];
};

/**
 * enum iommu_hwpt_data_type - IOMMU HWPT Data Type
 * @IOMMU_HWPT_DATA_NONE: no data
 * @IOMMU_HWPT_DATA_VTD_S1: Intel VT-d stage-1 page table
 * @IOMMU_HWPT_DATA_ARM_SMMUV3: ARM SMMUv3 Context Descriptor Table
 */
enum iommu_hwpt_data_type {
	IOMMU_HWPT_DATA_NONE = 0,
	IOMMU_HWPT_DATA_VTD_S1 = 1,
	IOMMU_HWPT_DATA_ARM_SMMUV3 = 2,
};

/**
 * struct iommu_hwpt_alloc - ioctl(IOMMU_HWPT_ALLOC)
 * @size: sizeof(struct iommu_hwpt_alloc)
 * @flags: Combination of enum iommufd_hwpt_alloc_flags
 * @dev_id: The device to allocate this HWPT for
 * @pt_id: The IOAS or HWPT or vIOMMU to connect this HWPT to
 * @out_hwpt_id: The ID of the new HWPT
 * @__reserved: Must be 0
 * @data_type: One of enum iommu_hwpt_data_type
 * @data_len: Length of the type specific data
 * @data_uptr: User pointer to the type specific data
 * @fault_id: The ID of IOMMUFD_FAULT object. Valid only if flags field of
 *            IOMMU_HWPT_FAULT_ID_VALID is set.
 * @__reserved2: Padding to 64-bit alignment. Must be 0.
 *
 * Explicitly allocate a hardware page table object. This is the same object
 * type that is returned by iommufd_device_attach() and represents the
 * underlying iommu driver's iommu_domain kernel object.
 *
 * A kernel-managed HWPT will be created with the mappings from the given
 * IOAS via the @pt_id. The @data_type for this allocation must be set to
 * IOMMU_HWPT_DATA_NONE. The HWPT can be allocated as a parent HWPT for a
 * nesting configuration by passing IOMMU_HWPT_ALLOC_NEST_PARENT via @flags.
 *
 * A user-managed nested HWPT will be created from a given vIOMMU (wrapping a
 * parent HWPT) or a parent HWPT via @pt_id, in which the parent HWPT must be
 * allocated previously via the same ioctl from a given IOAS (@pt_id). In this
 * case, the @data_type must be set to a pre-defined type corresponding to an
 * I/O page table type supported by the underlying IOMMU hardware. The device
 * via @dev_id and the vIOMMU via @pt_id must be associated to the same IOMMU
 * instance.
 *
 * If the @data_type is set to IOMMU_HWPT_DATA_NONE, @data_len and
 * @data_uptr should be zero. Otherwise, both @data_len and @data_uptr
 * must be given.
 */
struct iommu_hwpt_alloc {
	__u32 size;
	__u32 flags;
	__u32 dev_id;
	__u32 pt_id;
	__u32 out_hwpt_id;
	__u32 __reserved;
	__u32 data_type;
	__u32 data_len;
	__aligned_u64 data_uptr;
	__u32 fault_id;
	__u32 __reserved2;
};
#define IOMMU_HWPT_ALLOC _IO(IOMMUFD_TYPE, IOMMUFD_CMD_HWPT_ALLOC)

/**
 * enum iommu_hw_info_vtd_flags - Flags for VT-d hw_info
 * @IOMMU_HW_INFO_VTD_ERRATA_772415_SPR17: If set, disallow read-only mappings
 *                                         on a nested_parent domain.
 *                                         https://www.intel.com/content/www/us/en/content-details/772415/content-details.html
 */
enum iommu_hw_info_vtd_flags {
	IOMMU_HW_INFO_VTD_ERRATA_772415_SPR17 = 1 << 0,
};

/**
 * struct iommu_hw_info_vtd - Intel VT-d hardware information
 *
 * @flags: Combination of enum iommu_hw_info_vtd_flags
 * @__reserved: Must be 0
 *
 * @cap_reg: Value of Intel VT-d capability register defined in VT-d spec
 *           section 11.4.2 Capability Register.
 * @ecap_reg: Value of Intel VT-d capability register defined in VT-d spec
 *            section 11.4.3 Extended Capability Register.
 *
 * User needs to understand the Intel VT-d specification to decode the
 * register value.
 */
struct iommu_hw_info_vtd {
	__u32 flags;
	__u32 __reserved;
	__aligned_u64 cap_reg;
	__aligned_u64 ecap_reg;
};

/**
 * struct iommu_hw_info_arm_smmuv3 - ARM SMMUv3 hardware information
 *                                   (IOMMU_HW_INFO_TYPE_ARM_SMMUV3)
 *
 * @flags: Must be set to 0
 * @__reserved: Must be 0
 * @idr: Implemented features for ARM SMMU Non-secure programming interface
 * @iidr: Information about the implementation and implementer of ARM SMMU,
 *        and architecture version supported
 * @aidr: ARM SMMU architecture version
 *
 * For the details of @idr, @iidr and @aidr, please refer to the chapters
 * from 6.3.1 to 6.3.6 in the SMMUv3 Spec.
 *
 * This reports the raw HW capability, and not all bits are meaningful to be
 * read by userspace. Only the following fields should be used:
 *
 * idr[0]: ST_LEVEL, TERM_MODEL, STALL_MODEL, TTENDIAN , CD2L, ASID16, TTF
 * idr[1]: SIDSIZE, SSIDSIZE
 * idr[3]: BBML, RIL
 * idr[5]: VAX, GRAN64K, GRAN16K, GRAN4K
 *
 * - S1P should be assumed to be true if a NESTED HWPT can be created
 * - VFIO/iommufd only support platforms with COHACC, it should be assumed to be
 *   true.
 * - ATS is a per-device property. If the VMM describes any devices as ATS
 *   capable in ACPI/DT it should set the corresponding idr.
 *
 * This list may expand in future (eg E0PD, AIE, PBHA, D128, DS etc). It is
 * important that VMMs do not read bits outside the list to allow for
 * compatibility with future kernels. Several features in the SMMUv3
 * architecture are not currently supported by the kernel for nesting: HTTU,
 * BTM, MPAM and others.
 */
struct iommu_hw_info_arm_smmuv3 {
	__u32 flags;
	__u32 __reserved;
	__u32 idr[6];
	__u32 iidr;
	__u32 aidr;
};

/**
 * enum iommu_hw_info_type - IOMMU Hardware Info Types
 * @IOMMU_HW_INFO_TYPE_NONE: Used by the drivers that do not report hardware
 *                           info
 * @IOMMU_HW_INFO_TYPE_INTEL_VTD: Intel VT-d iommu info type
 * @IOMMU_HW_INFO_TYPE_ARM_SMMUV3: ARM SMMUv3 iommu info type
 */
enum iommu_hw_info_type {
	IOMMU_HW_INFO_TYPE_NONE = 0,
	IOMMU_HW_INFO_TYPE_INTEL_VTD = 1,
	IOMMU_HW_INFO_TYPE_ARM_SMMUV3 = 2,
};

/**
 * enum iommufd_hw_capabilities
 * @IOMMU_HW_CAP_DIRTY_TRACKING: IOMMU hardware support for dirty tracking
 *                               If available, it means the following APIs
 *                               are supported:
 *
 *                                   IOMMU_HWPT_GET_DIRTY_BITMAP
 *                                   IOMMU_HWPT_SET_DIRTY_TRACKING
 *
 */
enum iommufd_hw_capabilities {
	IOMMU_HW_CAP_DIRTY_TRACKING = 1 << 0,
};

/**
 * struct iommu_hw_info - ioctl(IOMMU_GET_HW_INFO)
 * @size: sizeof(struct iommu_hw_info)
 * @flags: Must be 0
 * @dev_id: The device bound to the iommufd
 * @data_len: Input the length of a user buffer in bytes. Output the length of
 *            data that kernel supports
 * @data_uptr: User pointer to a user-space buffer used by the kernel to fill
 *             the iommu type specific hardware information data
 * @out_data_type: Output the iommu hardware info type as defined in the enum
 *                 iommu_hw_info_type.
 * @out_capabilities: Output the generic iommu capability info type as defined
 *                    in the enum iommu_hw_capabilities.
 * @__reserved: Must be 0
 *
 * Query an iommu type specific hardware information data from an iommu behind
 * a given device that has been bound to iommufd. This hardware info data will
 * be used to sync capabilities between the virtual iommu and the physical
 * iommu, e.g. a nested translation setup needs to check the hardware info, so
 * a guest stage-1 page table can be compatible with the physical iommu.
 *
 * To capture an iommu type specific hardware information data, @data_uptr and
 * its length @data_len must be provided. Trailing bytes will be zeroed if the
 * user buffer is larger than the data that kernel has. Otherwise, kernel only
 * fills the buffer using the given length in @data_len. If the ioctl succeeds,
 * @data_len will be updated to the length that kernel actually supports,
 * @out_data_type will be filled to decode the data filled in the buffer
 * pointed by @data_uptr. Input @data_len == zero is allowed.
 */
struct iommu_hw_info {
	__u32 size;
	__u32 flags;
	__u32 dev_id;
	__u32 data_len;
	__aligned_u64 data_uptr;
	__u32 out_data_type;
	__u32 __reserved;
	__aligned_u64 out_capabilities;
};
#define IOMMU_GET_HW_INFO _IO(IOMMUFD_TYPE, IOMMUFD_CMD_GET_HW_INFO)

/*
 * enum iommufd_hwpt_set_dirty_tracking_flags - Flags for steering dirty
 *                                              tracking
 * @IOMMU_HWPT_DIRTY_TRACKING_ENABLE: Enable dirty tracking
 */
enum iommufd_hwpt_set_dirty_tracking_flags {
	IOMMU_HWPT_DIRTY_TRACKING_ENABLE = 1,
};

/**
 * struct iommu_hwpt_set_dirty_tracking - ioctl(IOMMU_HWPT_SET_DIRTY_TRACKING)
 * @size: sizeof(struct iommu_hwpt_set_dirty_tracking)
 * @flags: Combination of enum iommufd_hwpt_set_dirty_tracking_flags
 * @hwpt_id: HW pagetable ID that represents the IOMMU domain
 * @__reserved: Must be 0
 *
 * Toggle dirty tracking on an HW pagetable.
 */
struct iommu_hwpt_set_dirty_tracking {
	__u32 size;
	__u32 flags;
	__u32 hwpt_id;
	__u32 __reserved;
};
#define IOMMU_HWPT_SET_DIRTY_TRACKING _IO(IOMMUFD_TYPE, \
					  IOMMUFD_CMD_HWPT_SET_DIRTY_TRACKING)

/**
 * enum iommufd_hwpt_get_dirty_bitmap_flags - Flags for getting dirty bits
 * @IOMMU_HWPT_GET_DIRTY_BITMAP_NO_CLEAR: Just read the PTEs without clearing
 *                                        any dirty bits metadata. This flag
 *                                        can be passed in the expectation
 *                                        where the next operation is an unmap
 *                                        of the same IOVA range.
 *
 */
enum iommufd_hwpt_get_dirty_bitmap_flags {
	IOMMU_HWPT_GET_DIRTY_BITMAP_NO_CLEAR = 1,
};

/**
 * struct iommu_hwpt_get_dirty_bitmap - ioctl(IOMMU_HWPT_GET_DIRTY_BITMAP)
 * @size: sizeof(struct iommu_hwpt_get_dirty_bitmap)
 * @hwpt_id: HW pagetable ID that represents the IOMMU domain
 * @flags: Combination of enum iommufd_hwpt_get_dirty_bitmap_flags
 * @__reserved: Must be 0
 * @iova: base IOVA of the bitmap first bit
 * @length: IOVA range size
 * @page_size: page size granularity of each bit in the bitmap
 * @data: bitmap where to set the dirty bits. The bitmap bits each
 *        represent a page_size which you deviate from an arbitrary iova.
 *
 * Checking a given IOVA is dirty:
 *
 *  data[(iova / page_size) / 64] & (1ULL << ((iova / page_size) % 64))
 *
 * Walk the IOMMU pagetables for a given IOVA range to return a bitmap
 * with the dirty IOVAs. In doing so it will also by default clear any
 * dirty bit metadata set in the IOPTE.
 */
struct iommu_hwpt_get_dirty_bitmap {
	__u32 size;
	__u32 hwpt_id;
	__u32 flags;
	__u32 __reserved;
	__aligned_u64 iova;
	__aligned_u64 length;
	__aligned_u64 page_size;
	__aligned_u64 data;
};
#define IOMMU_HWPT_GET_DIRTY_BITMAP _IO(IOMMUFD_TYPE, \
					IOMMUFD_CMD_HWPT_GET_DIRTY_BITMAP)

/**
 * enum iommu_hwpt_invalidate_data_type - IOMMU HWPT Cache Invalidation
 *                                        Data Type
 * @IOMMU_HWPT_INVALIDATE_DATA_VTD_S1: Invalidation data for VTD_S1
 * @IOMMU_VIOMMU_INVALIDATE_DATA_ARM_SMMUV3: Invalidation data for ARM SMMUv3
 */
enum iommu_hwpt_invalidate_data_type {
	IOMMU_HWPT_INVALIDATE_DATA_VTD_S1 = 0,
	IOMMU_VIOMMU_INVALIDATE_DATA_ARM_SMMUV3 = 1,
};

/**
 * enum iommu_hwpt_vtd_s1_invalidate_flags - Flags for Intel VT-d
 *                                           stage-1 cache invalidation
 * @IOMMU_VTD_INV_FLAGS_LEAF: Indicates whether the invalidation applies
 *                            to all-levels page structure cache or just
 *                            the leaf PTE cache.
 */
enum iommu_hwpt_vtd_s1_invalidate_flags {
	IOMMU_VTD_INV_FLAGS_LEAF = 1 << 0,
};

/**
 * struct iommu_hwpt_vtd_s1_invalidate - Intel VT-d cache invalidation
 *                                       (IOMMU_HWPT_INVALIDATE_DATA_VTD_S1)
 * @addr: The start address of the range to be invalidated. It needs to
 *        be 4KB aligned.
 * @npages: Number of contiguous 4K pages to be invalidated.
 * @flags: Combination of enum iommu_hwpt_vtd_s1_invalidate_flags
 * @__reserved: Must be 0
 *
 * The Intel VT-d specific invalidation data for user-managed stage-1 cache
 * invalidation in nested translation. Userspace uses this structure to
 * tell the impacted cache scope after modifying the stage-1 page table.
 *
 * Invalidating all the caches related to the page table by setting @addr
 * to be 0 and @npages to be U64_MAX.
 *
 * The device TLB will be invalidated automatically if ATS is enabled.
 */
struct iommu_hwpt_vtd_s1_invalidate {
	__aligned_u64 addr;
	__aligned_u64 npages;
	__u32 flags;
	__u32 __reserved;
};

/**
 * struct iommu_viommu_arm_smmuv3_invalidate - ARM SMMUv3 cache invalidation
 *         (IOMMU_VIOMMU_INVALIDATE_DATA_ARM_SMMUV3)
 * @cmd: 128-bit cache invalidation command that runs in SMMU CMDQ.
 *       Must be little-endian.
 *
 * Supported command list only when passing in a vIOMMU via @hwpt_id:
 *     CMDQ_OP_TLBI_NSNH_ALL
 *     CMDQ_OP_TLBI_NH_VA
 *     CMDQ_OP_TLBI_NH_VAA
 *     CMDQ_OP_TLBI_NH_ALL
 *     CMDQ_OP_TLBI_NH_ASID
 *     CMDQ_OP_ATC_INV
 *     CMDQ_OP_CFGI_CD
 *     CMDQ_OP_CFGI_CD_ALL
 *
 * -EIO will be returned if the command is not supported.
 */
struct iommu_viommu_arm_smmuv3_invalidate {
	__aligned_le64 cmd[2];
};

/**
 * struct iommu_hwpt_invalidate - ioctl(IOMMU_HWPT_INVALIDATE)
 * @size: sizeof(struct iommu_hwpt_invalidate)
 * @hwpt_id: ID of a nested HWPT or a vIOMMU, for cache invalidation
 * @data_uptr: User pointer to an array of driver-specific cache invalidation
 *             data.
 * @data_type: One of enum iommu_hwpt_invalidate_data_type, defining the data
 *             type of all the entries in the invalidation request array. It
 *             should be a type supported by the hwpt pointed by @hwpt_id.
 * @entry_len: Length (in bytes) of a request entry in the request array
 * @entry_num: Input the number of cache invalidation requests in the array.
 *             Output the number of requests successfully handled by kernel.
 * @__reserved: Must be 0.
 *
 * Invalidate iommu cache for user-managed page table or vIOMMU. Modifications
 * on a user-managed page table should be followed by this operation, if a HWPT
 * is passed in via @hwpt_id. Other caches, such as device cache or descriptor
 * cache can be flushed if a vIOMMU is passed in via the @hwpt_id field.
 *
 * Each ioctl can support one or more cache invalidation requests in the array
 * that has a total size of @entry_len * @entry_num.
 *
 * An empty invalidation request array by setting @entry_num==0 is allowed, and
 * @entry_len and @data_uptr would be ignored in this case. This can be used to
 * check if the given @data_type is supported or not by kernel.
 */
struct iommu_hwpt_invalidate {
	__u32 size;
	__u32 hwpt_id;
	__aligned_u64 data_uptr;
	__u32 data_type;
	__u32 entry_len;
	__u32 entry_num;
	__u32 __reserved;
};
#define IOMMU_HWPT_INVALIDATE _IO(IOMMUFD_TYPE, IOMMUFD_CMD_HWPT_INVALIDATE)

/**
 * enum iommu_hwpt_pgfault_flags - flags for struct iommu_hwpt_pgfault
 * @IOMMU_PGFAULT_FLAGS_PASID_VALID: The pasid field of the fault data is
 *                                   valid.
 * @IOMMU_PGFAULT_FLAGS_LAST_PAGE: It's the last fault of a fault group.
 */
enum iommu_hwpt_pgfault_flags {
	IOMMU_PGFAULT_FLAGS_PASID_VALID		= (1 << 0),
	IOMMU_PGFAULT_FLAGS_LAST_PAGE		= (1 << 1),
};

/**
 * enum iommu_hwpt_pgfault_perm - perm bits for struct iommu_hwpt_pgfault
 * @IOMMU_PGFAULT_PERM_READ: request for read permission
 * @IOMMU_PGFAULT_PERM_WRITE: request for write permission
 * @IOMMU_PGFAULT_PERM_EXEC: (PCIE 10.4.1) request with a PASID that has the
 *                           Execute Requested bit set in PASID TLP Prefix.
 * @IOMMU_PGFAULT_PERM_PRIV: (PCIE 10.4.1) request with a PASID that has the
 *                           Privileged Mode Requested bit set in PASID TLP
 *                           Prefix.
 */
enum iommu_hwpt_pgfault_perm {
	IOMMU_PGFAULT_PERM_READ			= (1 << 0),
	IOMMU_PGFAULT_PERM_WRITE		= (1 << 1),
	IOMMU_PGFAULT_PERM_EXEC			= (1 << 2),
	IOMMU_PGFAULT_PERM_PRIV			= (1 << 3),
};

/**
 * struct iommu_hwpt_pgfault - iommu page fault data
 * @flags: Combination of enum iommu_hwpt_pgfault_flags
 * @dev_id: id of the originated device
 * @pasid: Process Address Space ID
 * @grpid: Page Request Group Index
 * @perm: Combination of enum iommu_hwpt_pgfault_perm
 * @__reserved: Must be 0.
 * @addr: Fault address
 * @length: a hint of how much data the requestor is expecting to fetch. For
 *          example, if the PRI initiator knows it is going to do a 10MB
 *          transfer, it could fill in 10MB and the OS could pre-fault in
 *          10MB of IOVA. It's default to 0 if there's no such hint.
 * @cookie: kernel-managed cookie identifying a group of fault messages. The
 *          cookie number encoded in the last page fault of the group should
 *          be echoed back in the response message.
 */
struct iommu_hwpt_pgfault {
	__u32 flags;
	__u32 dev_id;
	__u32 pasid;
	__u32 grpid;
	__u32 perm;
	__u32 __reserved;
	__aligned_u64 addr;
	__u32 length;
	__u32 cookie;
};

/**
 * enum iommufd_page_response_code - Return status of fault handlers
 * @IOMMUFD_PAGE_RESP_SUCCESS: Fault has been handled and the page tables
 *                             populated, retry the access. This is the
 *                             "Success" defined in PCI 10.4.2.1.
 * @IOMMUFD_PAGE_RESP_INVALID: Could not handle this fault, don't retry the
 *                             access. This is the "Invalid Request" in PCI
 *                             10.4.2.1.
 */
enum iommufd_page_response_code {
	IOMMUFD_PAGE_RESP_SUCCESS = 0,
	IOMMUFD_PAGE_RESP_INVALID = 1,
};

/**
 * struct iommu_hwpt_page_response - IOMMU page fault response
 * @cookie: The kernel-managed cookie reported in the fault message.
 * @code: One of response code in enum iommufd_page_response_code.
 */
struct iommu_hwpt_page_response {
	__u32 cookie;
	__u32 code;
};

/**
 * struct iommu_fault_alloc - ioctl(IOMMU_FAULT_QUEUE_ALLOC)
 * @size: sizeof(struct iommu_fault_alloc)
 * @flags: Must be 0
 * @out_fault_id: The ID of the new FAULT
 * @out_fault_fd: The fd of the new FAULT
 *
 * Explicitly allocate a fault handling object.
 */
struct iommu_fault_alloc {
	__u32 size;
	__u32 flags;
	__u32 out_fault_id;
	__u32 out_fault_fd;
};
#define IOMMU_FAULT_QUEUE_ALLOC _IO(IOMMUFD_TYPE, IOMMUFD_CMD_FAULT_QUEUE_ALLOC)

/**
 * enum iommu_viommu_type - Virtual IOMMU Type
 * @IOMMU_VIOMMU_TYPE_DEFAULT: Reserved for future use
 * @IOMMU_VIOMMU_TYPE_ARM_SMMUV3: ARM SMMUv3 driver specific type
 */
enum iommu_viommu_type {
	IOMMU_VIOMMU_TYPE_DEFAULT = 0,
	IOMMU_VIOMMU_TYPE_ARM_SMMUV3 = 1,
};

/**
 * struct iommu_viommu_alloc - ioctl(IOMMU_VIOMMU_ALLOC)
 * @size: sizeof(struct iommu_viommu_alloc)
 * @flags: Must be 0
 * @type: Type of the virtual IOMMU. Must be defined in enum iommu_viommu_type
 * @dev_id: The device's physical IOMMU will be used to back the virtual IOMMU
 * @hwpt_id: ID of a nesting parent HWPT to associate to
 * @out_viommu_id: Output virtual IOMMU ID for the allocated object
 *
 * Allocate a virtual IOMMU object, representing the underlying physical IOMMU's
 * virtualization support that is a security-isolated slice of the real IOMMU HW
 * that is unique to a specific VM. Operations global to the IOMMU are connected
 * to the vIOMMU, such as:
 * - Security namespace for guest owned ID, e.g. guest-controlled cache tags
 * - Non-device-affiliated event reporting, e.g. invalidation queue errors
 * - Access to a sharable nesting parent pagetable across physical IOMMUs
 * - Virtualization of various platforms IDs, e.g. RIDs and others
 * - Delivery of paravirtualized invalidation
 * - Direct assigned invalidation queues
 * - Direct assigned interrupts
 */
struct iommu_viommu_alloc {
	__u32 size;
	__u32 flags;
	__u32 type;
	__u32 dev_id;
	__u32 hwpt_id;
	__u32 out_viommu_id;
};
#define IOMMU_VIOMMU_ALLOC _IO(IOMMUFD_TYPE, IOMMUFD_CMD_VIOMMU_ALLOC)

/**
 * struct iommu_vdevice_alloc - ioctl(IOMMU_VDEVICE_ALLOC)
 * @size: sizeof(struct iommu_vdevice_alloc)
 * @viommu_id: vIOMMU ID to associate with the virtual device
 * @dev_id: The physical device to allocate a virtual instance on the vIOMMU
 * @out_vdevice_id: Object handle for the vDevice. Pass to IOMMU_DESTORY
 * @virt_id: Virtual device ID per vIOMMU, e.g. vSID of ARM SMMUv3, vDeviceID
 *           of AMD IOMMU, and vRID of a nested Intel VT-d to a Context Table
 *
 * Allocate a virtual device instance (for a physical device) against a vIOMMU.
 * This instance holds the device's information (related to its vIOMMU) in a VM.
 */
struct iommu_vdevice_alloc {
	__u32 size;
	__u32 viommu_id;
	__u32 dev_id;
	__u32 out_vdevice_id;
	__aligned_u64 virt_id;
};
#define IOMMU_VDEVICE_ALLOC _IO(IOMMUFD_TYPE, IOMMUFD_CMD_VDEVICE_ALLOC)

/**
 * struct iommu_ioas_change_process - ioctl(VFIO_IOAS_CHANGE_PROCESS)
 * @size: sizeof(struct iommu_ioas_change_process)
 * @__reserved: Must be 0
 *
 * This transfers pinned memory counts for every memory map in every IOAS
 * in the context to the current process.  This only supports maps created
 * with IOMMU_IOAS_MAP_FILE, and returns EINVAL if other maps are present.
 * If the ioctl returns a failure status, then nothing is changed.
 *
 * This API is useful for transferring operation of a device from one process
 * to another, such as during userland live update.
 */
struct iommu_ioas_change_process {
	__u32 size;
	__u32 __reserved;
};

#define IOMMU_IOAS_CHANGE_PROCESS \
	_IO(IOMMUFD_TYPE, IOMMUFD_CMD_IOAS_CHANGE_PROCESS)

#endif

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