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android
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drwxr-xr-x
2025-03-11 15:15
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drwxr-xr-x
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drwxr-xr-x
2025-03-11 15:15
a.out.h
6.73
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2025-02-12 19:54
acct.h
3.82
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2025-02-12 19:54
acrn.h
18.51
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2025-02-12 19:54
adb.h
1.11
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2025-02-12 19:54
adfs_fs.h
993
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2025-02-12 19:54
affs_hardblocks.h
1.54
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2025-02-12 19:54
agpgart.h
3.86
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2025-02-12 19:54
aio_abi.h
3.32
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2025-02-12 19:54
am437x-vpfe.h
3.59
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amt.h
1.71
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2025-02-12 19:54
apm_bios.h
3.6
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apparmor.h
3.4
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arcfb.h
213
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arm_sdei.h
2.69
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aspeed-lpc-ctrl.h
1.74
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2025-02-12 19:54
aspeed-p2a-ctrl.h
1.86
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aspeed-video.h
389
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atalk.h
1023
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atm.h
7.7
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atm_eni.h
648
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atm_he.h
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atm_idt77105.h
955
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atm_nicstar.h
1.25
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atm_tcp.h
1.58
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atm_zatm.h
1.5
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atmapi.h
952
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atmarp.h
1.27
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atmbr2684.h
3.2
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atmclip.h
576
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atmdev.h
7.32
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atmioc.h
1.61
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atmlec.h
2.33
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atmmpc.h
4.13
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atmppp.h
639
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atmsap.h
4.85
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atmsvc.h
1.81
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audit.h
21.2
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auto_dev-ioctl.h
4.87
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auto_fs.h
6.28
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auto_fs4.h
451
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auxvec.h
1.68
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ax25.h
2.76
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batadv_packet.h
21.13
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batman_adv.h
16.49
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baycom.h
883
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bcm933xx_hcs.h
419
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bfs_fs.h
1.86
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binfmts.h
776
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blkpg.h
904
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blktrace_api.h
4.59
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blkzoned.h
6.34
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bpf.h
268.83
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bpf_common.h
1.33
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bpf_perf_event.h
529
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bpqether.h
981
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bsg.h
2.44
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bt-bmc.h
572
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btf.h
5.46
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btrfs.h
36.28
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btrfs_tree.h
34.77
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cachefiles.h
1.61
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can.h
10.95
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2025-02-12 19:54
capability.h
13.21
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2025-02-12 19:54
capi.h
3.05
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2025-02-12 19:54
cciss_defs.h
3.2
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cciss_ioctl.h
2.7
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ccs.h
767
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cdrom.h
28.87
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cec-funcs.h
53.14
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2025-02-12 19:54
cec.h
41.17
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2025-02-12 19:54
cfm_bridge.h
1.42
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2025-02-12 19:54
cgroupstats.h
2.06
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2025-02-12 19:54
chio.h
5.16
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2025-02-12 19:54
close_range.h
377
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cn_proc.h
4.06
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coda.h
17.79
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2025-02-12 19:54
coff.h
12.25
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2025-02-12 19:54
comedi.h
54.18
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2025-02-12 19:54
connector.h
2.2
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2025-02-12 19:54
const.h
991
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coresight-stm.h
747
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counter.h
4.77
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cramfs_fs.h
3.47
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cryptouser.h
5.2
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2025-02-12 19:54
cuda.h
905
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cxl_mem.h
7.8
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cyclades.h
969
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cycx_cfm.h
2.92
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dcbnl.h
24.97
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dccp.h
6.29
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devlink.h
22.17
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dlm.h
2.52
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dlm_device.h
2.48
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2025-02-12 19:54
dlm_plock.h
916
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2025-02-12 19:54
dlmconstants.h
4.97
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dm-ioctl.h
11.33
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2025-02-12 19:54
dm-log-userspace.h
14.83
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dma-buf.h
7.15
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2025-02-12 19:54
dma-heap.h
1.36
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2025-02-12 19:54
dns_resolver.h
3.86
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dpll.h
5.75
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2025-02-12 19:54
dqblk_xfs.h
9.17
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dw100.h
357
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edd.h
5.47
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efs_fs_sb.h
2.17
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elf-em.h
2.57
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elf-fdpic.h
1.58
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elf.h
15.13
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errno.h
23
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errqueue.h
1.94
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erspan.h
1.03
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ethtool.h
86.73
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ethtool_netlink.h
26.38
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eventfd.h
264
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eventpoll.h
2.53
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ext4.h
4.03
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f2fs.h
3.28
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fadvise.h
842
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falloc.h
3.5
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fanotify.h
8.1
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2025-02-12 19:54
fb.h
16.09
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fcntl.h
4.44
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fd.h
11.83
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fdreg.h
5.24
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fib_rules.h
1.99
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fiemap.h
2.71
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filter.h
2.16
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2025-02-12 19:54
firewire-cdev.h
49.53
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2025-02-12 19:54
firewire-constants.h
3.16
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fou.h
819
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fpga-dfl.h
8.52
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fs.h
13.94
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fscrypt.h
6.44
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fsi.h
3.02
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fsl_hypervisor.h
7.13
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fsl_mc.h
734
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fsmap.h
4.3
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fsverity.h
3.11
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fuse.h
27.04
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futex.h
5.98
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gameport.h
897
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gen_stats.h
1.49
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genetlink.h
2.19
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2025-02-12 19:54
gfs2_ondisk.h
14.43
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2025-02-12 19:54
gpio.h
19.46
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2025-02-12 19:54
gsmmux.h
4.4
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2025-02-12 19:54
gtp.h
734
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handshake.h
1.61
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hash_info.h
1.01
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2025-02-12 19:54
hdlc.h
637
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hdlcdrv.h
2.84
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hdreg.h
22.17
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hid.h
2.04
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2025-02-12 19:54
hiddev.h
6.2
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2025-02-12 19:54
hidraw.h
1.95
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hpet.h
743
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hsr_netlink.h
1.08
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hw_breakpoint.h
605
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hyperv.h
10.89
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i2c-dev.h
1.83
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i2c.h
6.73
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i2o-dev.h
11.28
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i8k.h
1.49
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icmp.h
4.67
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icmpv6.h
4.17
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idxd.h
9.11
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if.h
10.67
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if_addr.h
2.09
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if_addrlabel.h
721
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if_alg.h
1.56
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if_arcnet.h
3.63
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if_arp.h
6.43
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if_bonding.h
5.02
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if_bridge.h
20.18
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if_cablemodem.h
986
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if_eql.h
1.32
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if_ether.h
8.56
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if_fc.h
1.7
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if_fddi.h
4.27
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if_hippi.h
4.14
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if_infiniband.h
1.22
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if_link.h
54.49
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if_ltalk.h
210
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if_macsec.h
6.35
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if_packet.h
8.07
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if_phonet.h
424
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if_plip.h
660
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if_ppp.h
29
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if_pppol2tp.h
3.23
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if_pppox.h
4.76
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if_slip.h
872
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if_team.h
2.54
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if_tun.h
4.21
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if_tunnel.h
4.79
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2025-02-12 19:54
if_vlan.h
1.79
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2025-02-12 19:54
if_x25.h
881
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2025-02-12 19:54
if_xdp.h
4.89
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ife.h
351
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igmp.h
2.99
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ila.h
1.22
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in.h
10.61
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in6.h
7.4
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2025-02-12 19:54
in_route.h
936
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inet_diag.h
4.9
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inotify.h
3.21
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input.h
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media-bus-format.h
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mount.h
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mpls.h
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mptcp_pm.h
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mrp_bridge.h
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msdos_fs.h
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msg.h
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mtio.h
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nbd-netlink.h
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ncsi.h
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ndctl.h
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neighbour.h
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net.h
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net_dropmon.h
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net_namespace.h
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net_tstamp.h
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netconf.h
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netdev.h
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netdevice.h
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netfilter.h
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netfilter_arp.h
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netfilter_bridge.h
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netfilter_ipv4.h
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netlink.h
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netlink_diag.h
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netrom.h
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nexthop.h
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nfc.h
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nfs3.h
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nfs_fs.h
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nfs_idmap.h
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nfs_mount.h
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nfsacl.h
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nfsd_netlink.h
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nilfs2_api.h
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nilfs2_ondisk.h
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nitro_enclaves.h
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nl80211.h
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npcm-video.h
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nsfs.h
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nsm.h
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nubus.h
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nvme_ioctl.h
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nvram.h
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omap3isp.h
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openat2.h
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openvswitch.h
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packet_diag.h
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param.h
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parport.h
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patchkey.h
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pci.h
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pci_regs.h
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pcitest.h
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perf_event.h
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personality.h
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pfkeyv2.h
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pfrut.h
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pg.h
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phantom.h
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phonet.h
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pidfd.h
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pkt_cls.h
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pkt_sched.h
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pktcdvd.h
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pmu.h
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poll.h
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posix_acl.h
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posix_types.h
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ppdev.h
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ppp-comp.h
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ppp-ioctl.h
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ppp_defs.h
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pps.h
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pr.h
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prctl.h
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psample.h
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psci.h
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psp-dbc.h
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psp-sev.h
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ptp_clock.h
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ptrace.h
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qemu_fw_cfg.h
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qnx4_fs.h
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qnxtypes.h
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qrtr.h
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quota.h
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radeonfb.h
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random.h
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rds.h
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reboot.h
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reiserfs_fs.h
775
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reiserfs_xattr.h
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remoteproc_cdev.h
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resource.h
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rfkill.h
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rio_cm_cdev.h
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rio_mport_cdev.h
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rkisp1-config.h
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romfs_fs.h
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rose.h
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route.h
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rpl.h
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rpl_iptunnel.h
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rpmsg.h
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rpmsg_types.h
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rseq.h
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rtc.h
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rtnetlink.h
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rxrpc.h
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scc.h
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sched.h
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scif_ioctl.h
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screen_info.h
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sctp.h
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seccomp.h
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securebits.h
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sed-opal.h
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seg6.h
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seg6_genl.h
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seg6_hmac.h
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seg6_iptunnel.h
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seg6_local.h
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selinux_netlink.h
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sem.h
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serial.h
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serial_core.h
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serial_reg.h
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serio.h
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sev-guest.h
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shm.h
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signal.h
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signalfd.h
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smc.h
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smc_diag.h
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smiapp.h
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snmp.h
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sock_diag.h
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socket.h
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sockios.h
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sonet.h
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sonypi.h
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sound.h
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soundcard.h
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stat.h
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stddef.h
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stm.h
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string.h
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Save
Rename
/* * Char device interface. * * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #ifndef _LINUX_FIREWIRE_CDEV_H #define _LINUX_FIREWIRE_CDEV_H #include <linux/ioctl.h> #include <linux/types.h> #include <linux/firewire-constants.h> /* available since kernel version 2.6.22 */ #define FW_CDEV_EVENT_BUS_RESET 0x00 #define FW_CDEV_EVENT_RESPONSE 0x01 #define FW_CDEV_EVENT_REQUEST 0x02 #define FW_CDEV_EVENT_ISO_INTERRUPT 0x03 /* available since kernel version 2.6.30 */ #define FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED 0x04 #define FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED 0x05 /* available since kernel version 2.6.36 */ #define FW_CDEV_EVENT_REQUEST2 0x06 #define FW_CDEV_EVENT_PHY_PACKET_SENT 0x07 #define FW_CDEV_EVENT_PHY_PACKET_RECEIVED 0x08 #define FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL 0x09 /* available since kernel version 6.5 */ #define FW_CDEV_EVENT_REQUEST3 0x0a #define FW_CDEV_EVENT_RESPONSE2 0x0b #define FW_CDEV_EVENT_PHY_PACKET_SENT2 0x0c #define FW_CDEV_EVENT_PHY_PACKET_RECEIVED2 0x0d /** * struct fw_cdev_event_common - Common part of all fw_cdev_event_* types * @closure: For arbitrary use by userspace * @type: Discriminates the fw_cdev_event_* types * * This struct may be used to access generic members of all fw_cdev_event_* * types regardless of the specific type. * * Data passed in the @closure field for a request will be returned in the * corresponding event. It is big enough to hold a pointer on all platforms. * The ioctl used to set @closure depends on the @type of event. */ struct fw_cdev_event_common { __u64 closure; __u32 type; }; /** * struct fw_cdev_event_bus_reset - Sent when a bus reset occurred * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_GET_INFO ioctl * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_BUS_RESET * @node_id: New node ID of this node * @local_node_id: Node ID of the local node, i.e. of the controller * @bm_node_id: Node ID of the bus manager * @irm_node_id: Node ID of the iso resource manager * @root_node_id: Node ID of the root node * @generation: New bus generation * * This event is sent when the bus the device belongs to goes through a bus * reset. It provides information about the new bus configuration, such as * new node ID for this device, new root ID, and others. * * If @bm_node_id is 0xffff right after bus reset it can be reread by an * %FW_CDEV_IOC_GET_INFO ioctl after bus manager selection was finished. * Kernels with ABI version < 4 do not set @bm_node_id. */ struct fw_cdev_event_bus_reset { __u64 closure; __u32 type; __u32 node_id; __u32 local_node_id; __u32 bm_node_id; __u32 irm_node_id; __u32 root_node_id; __u32 generation; }; /** * struct fw_cdev_event_response - Sent when a response packet was received * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_REQUEST * or %FW_CDEV_IOC_SEND_BROADCAST_REQUEST * or %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_RESPONSE * @rcode: Response code returned by the remote node * @length: Data length, i.e. the response's payload size in bytes * @data: Payload data, if any * * This event is sent instead of &fw_cdev_event_response if the kernel or the client implements * ABI version <= 5. It has the lack of time stamp field comparing to &fw_cdev_event_response2. */ struct fw_cdev_event_response { __u64 closure; __u32 type; __u32 rcode; __u32 length; __u32 data[]; }; /** * struct fw_cdev_event_response2 - Sent when a response packet was received * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_REQUEST * or %FW_CDEV_IOC_SEND_BROADCAST_REQUEST * or %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_RESPONSE * @rcode: Response code returned by the remote node * @length: Data length, i.e. the response's payload size in bytes * @request_tstamp: The time stamp of isochronous cycle at which the request was sent. * @response_tstamp: The time stamp of isochronous cycle at which the response was sent. * @padding: Padding to keep the size of structure as multiples of 8 in various architectures * since 4 byte alignment is used for 8 byte of object type in System V ABI for i386 * architecture. * @data: Payload data, if any * * This event is sent when the stack receives a response to an outgoing request * sent by %FW_CDEV_IOC_SEND_REQUEST ioctl. The payload data for responses * carrying data (read and lock responses) follows immediately and can be * accessed through the @data field. * * The event is also generated after conclusions of transactions that do not * involve response packets. This includes unified write transactions, * broadcast write transactions, and transmission of asynchronous stream * packets. @rcode indicates success or failure of such transmissions. * * The value of @request_tstamp expresses the isochronous cycle at which the request was sent to * initiate the transaction. The value of @response_tstamp expresses the isochronous cycle at which * the response arrived to complete the transaction. Each value is unsigned 16 bit integer * containing three low order bits of second field and all 13 bits of cycle field in format of * CYCLE_TIMER register. */ struct fw_cdev_event_response2 { __u64 closure; __u32 type; __u32 rcode; __u32 length; __u32 request_tstamp; __u32 response_tstamp; __u32 padding; __u32 data[]; }; /** * struct fw_cdev_event_request - Old version of &fw_cdev_event_request2 * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_ALLOCATE ioctl * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST * @tcode: Transaction code of the incoming request * @offset: The offset into the 48-bit per-node address space * @handle: Reference to the kernel-side pending request * @length: Data length, i.e. the request's payload size in bytes * @data: Incoming data, if any * * This event is sent instead of &fw_cdev_event_request2 if the kernel or * the client implements ABI version <= 3. &fw_cdev_event_request lacks * essential information; use &fw_cdev_event_request2 instead. */ struct fw_cdev_event_request { __u64 closure; __u32 type; __u32 tcode; __u64 offset; __u32 handle; __u32 length; __u32 data[]; }; /** * struct fw_cdev_event_request2 - Sent on incoming request to an address region * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_ALLOCATE ioctl * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST2 * @tcode: Transaction code of the incoming request * @offset: The offset into the 48-bit per-node address space * @source_node_id: Sender node ID * @destination_node_id: Destination node ID * @card: The index of the card from which the request came * @generation: Bus generation in which the request is valid * @handle: Reference to the kernel-side pending request * @length: Data length, i.e. the request's payload size in bytes * @data: Incoming data, if any * * This event is sent instead of &fw_cdev_event_request3 if the kernel or the client implements * ABI version <= 5. It has the lack of time stamp field comparing to &fw_cdev_event_request3. */ struct fw_cdev_event_request2 { __u64 closure; __u32 type; __u32 tcode; __u64 offset; __u32 source_node_id; __u32 destination_node_id; __u32 card; __u32 generation; __u32 handle; __u32 length; __u32 data[]; }; /** * struct fw_cdev_event_request3 - Sent on incoming request to an address region * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_ALLOCATE ioctl * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST2 * @tcode: Transaction code of the incoming request * @offset: The offset into the 48-bit per-node address space * @source_node_id: Sender node ID * @destination_node_id: Destination node ID * @card: The index of the card from which the request came * @generation: Bus generation in which the request is valid * @handle: Reference to the kernel-side pending request * @length: Data length, i.e. the request's payload size in bytes * @tstamp: The time stamp of isochronous cycle at which the request arrived. * @padding: Padding to keep the size of structure as multiples of 8 in various architectures * since 4 byte alignment is used for 8 byte of object type in System V ABI for i386 * architecture. * @data: Incoming data, if any * * This event is sent when the stack receives an incoming request to an address * region registered using the %FW_CDEV_IOC_ALLOCATE ioctl. The request is * guaranteed to be completely contained in the specified region. Userspace is * responsible for sending the response by %FW_CDEV_IOC_SEND_RESPONSE ioctl, * using the same @handle. * * The payload data for requests carrying data (write and lock requests) * follows immediately and can be accessed through the @data field. * * Unlike &fw_cdev_event_request, @tcode of lock requests is one of the * firewire-core specific %TCODE_LOCK_MASK_SWAP...%TCODE_LOCK_VENDOR_DEPENDENT, * i.e. encodes the extended transaction code. * * @card may differ from &fw_cdev_get_info.card because requests are received * from all cards of the Linux host. @source_node_id, @destination_node_id, and * @generation pertain to that card. Destination node ID and bus generation may * therefore differ from the corresponding fields of the last * &fw_cdev_event_bus_reset. * * @destination_node_id may also differ from the current node ID because of a * non-local bus ID part or in case of a broadcast write request. Note, a * client must call an %FW_CDEV_IOC_SEND_RESPONSE ioctl even in case of a * broadcast write request; the kernel will then release the kernel-side pending * request but will not actually send a response packet. * * In case of a write request to FCP_REQUEST or FCP_RESPONSE, the kernel already * sent a write response immediately after the request was received; in this * case the client must still call an %FW_CDEV_IOC_SEND_RESPONSE ioctl to * release the kernel-side pending request, though another response won't be * sent. * * If the client subsequently needs to initiate requests to the sender node of * an &fw_cdev_event_request3, it needs to use a device file with matching * card index, node ID, and generation for outbound requests. * * @tstamp is isochronous cycle at which the request arrived. It is 16 bit integer value and the * higher 3 bits expresses three low order bits of second field in the format of CYCLE_TIME * register and the rest 13 bits expresses cycle field. */ struct fw_cdev_event_request3 { __u64 closure; __u32 type; __u32 tcode; __u64 offset; __u32 source_node_id; __u32 destination_node_id; __u32 card; __u32 generation; __u32 handle; __u32 length; __u32 tstamp; __u32 padding; __u32 data[]; }; /** * struct fw_cdev_event_iso_interrupt - Sent when an iso packet was completed * @closure: See &fw_cdev_event_common; * set by %FW_CDEV_CREATE_ISO_CONTEXT ioctl * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_ISO_INTERRUPT * @cycle: Cycle counter of the last completed packet * @header_length: Total length of following headers, in bytes * @header: Stripped headers, if any * * This event is sent when the controller has completed an &fw_cdev_iso_packet * with the %FW_CDEV_ISO_INTERRUPT bit set, when explicitly requested with * %FW_CDEV_IOC_FLUSH_ISO, or when there have been so many completed packets * without the interrupt bit set that the kernel's internal buffer for @header * is about to overflow. (In the last case, ABI versions < 5 drop header data * up to the next interrupt packet.) * * Isochronous transmit events (context type %FW_CDEV_ISO_CONTEXT_TRANSMIT): * * In version 3 and some implementations of version 2 of the ABI, &header_length * is a multiple of 4 and &header contains timestamps of all packets up until * the interrupt packet. The format of the timestamps is as described below for * isochronous reception. In version 1 of the ABI, &header_length was 0. * * Isochronous receive events (context type %FW_CDEV_ISO_CONTEXT_RECEIVE): * * The headers stripped of all packets up until and including the interrupt * packet are returned in the @header field. The amount of header data per * packet is as specified at iso context creation by * &fw_cdev_create_iso_context.header_size. * * Hence, _interrupt.header_length / _context.header_size is the number of * packets received in this interrupt event. The client can now iterate * through the mmap()'ed DMA buffer according to this number of packets and * to the buffer sizes as the client specified in &fw_cdev_queue_iso. * * Since version 2 of this ABI, the portion for each packet in _interrupt.header * consists of the 1394 isochronous packet header, followed by a timestamp * quadlet if &fw_cdev_create_iso_context.header_size > 4, followed by quadlets * from the packet payload if &fw_cdev_create_iso_context.header_size > 8. * * Format of 1394 iso packet header: 16 bits data_length, 2 bits tag, 6 bits * channel, 4 bits tcode, 4 bits sy, in big endian byte order. * data_length is the actual received size of the packet without the four * 1394 iso packet header bytes. * * Format of timestamp: 16 bits invalid, 3 bits cycleSeconds, 13 bits * cycleCount, in big endian byte order. * * In version 1 of the ABI, no timestamp quadlet was inserted; instead, payload * data followed directly after the 1394 is header if header_size > 4. * Behaviour of ver. 1 of this ABI is no longer available since ABI ver. 2. */ struct fw_cdev_event_iso_interrupt { __u64 closure; __u32 type; __u32 cycle; __u32 header_length; __u32 header[]; }; /** * struct fw_cdev_event_iso_interrupt_mc - An iso buffer chunk was completed * @closure: See &fw_cdev_event_common; * set by %FW_CDEV_CREATE_ISO_CONTEXT ioctl * @type: %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL * @completed: Offset into the receive buffer; data before this offset is valid * * This event is sent in multichannel contexts (context type * %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL) for &fw_cdev_iso_packet buffer * chunks that have been completely filled and that have the * %FW_CDEV_ISO_INTERRUPT bit set, or when explicitly requested with * %FW_CDEV_IOC_FLUSH_ISO. * * The buffer is continuously filled with the following data, per packet: * - the 1394 iso packet header as described at &fw_cdev_event_iso_interrupt, * but in little endian byte order, * - packet payload (as many bytes as specified in the data_length field of * the 1394 iso packet header) in big endian byte order, * - 0...3 padding bytes as needed to align the following trailer quadlet, * - trailer quadlet, containing the reception timestamp as described at * &fw_cdev_event_iso_interrupt, but in little endian byte order. * * Hence the per-packet size is data_length (rounded up to a multiple of 4) + 8. * When processing the data, stop before a packet that would cross the * @completed offset. * * A packet near the end of a buffer chunk will typically spill over into the * next queued buffer chunk. It is the responsibility of the client to check * for this condition, assemble a broken-up packet from its parts, and not to * re-queue any buffer chunks in which as yet unread packet parts reside. */ struct fw_cdev_event_iso_interrupt_mc { __u64 closure; __u32 type; __u32 completed; }; /** * struct fw_cdev_event_iso_resource - Iso resources were allocated or freed * @closure: See &fw_cdev_event_common; * set by``FW_CDEV_IOC_(DE)ALLOCATE_ISO_RESOURCE(_ONCE)`` ioctl * @type: %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED or * %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED * @handle: Reference by which an allocated resource can be deallocated * @channel: Isochronous channel which was (de)allocated, if any * @bandwidth: Bandwidth allocation units which were (de)allocated, if any * * An %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED event is sent after an isochronous * resource was allocated at the IRM. The client has to check @channel and * @bandwidth for whether the allocation actually succeeded. * * An %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED event is sent after an isochronous * resource was deallocated at the IRM. It is also sent when automatic * reallocation after a bus reset failed. * * @channel is <0 if no channel was (de)allocated or if reallocation failed. * @bandwidth is 0 if no bandwidth was (de)allocated or if reallocation failed. */ struct fw_cdev_event_iso_resource { __u64 closure; __u32 type; __u32 handle; __s32 channel; __s32 bandwidth; }; /** * struct fw_cdev_event_phy_packet - A PHY packet was transmitted or received * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_PHY_PACKET * or %FW_CDEV_IOC_RECEIVE_PHY_PACKETS ioctl * @type: %FW_CDEV_EVENT_PHY_PACKET_SENT or %..._RECEIVED * @rcode: %RCODE_..., indicates success or failure of transmission * @length: Data length in bytes * @data: Incoming data for %FW_CDEV_IOC_RECEIVE_PHY_PACKETS. For %FW_CDEV_IOC_SEND_PHY_PACKET * the field has the same data in the request, thus the length of 8 bytes. * * This event is sent instead of &fw_cdev_event_phy_packet2 if the kernel or * the client implements ABI version <= 5. It has the lack of time stamp field comparing to * &fw_cdev_event_phy_packet2. */ struct fw_cdev_event_phy_packet { __u64 closure; __u32 type; __u32 rcode; __u32 length; __u32 data[]; }; /** * struct fw_cdev_event_phy_packet2 - A PHY packet was transmitted or received with time stamp. * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_PHY_PACKET * or %FW_CDEV_IOC_RECEIVE_PHY_PACKETS ioctl * @type: %FW_CDEV_EVENT_PHY_PACKET_SENT2 or %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2 * @rcode: %RCODE_..., indicates success or failure of transmission * @length: Data length in bytes * @tstamp: For %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2, the time stamp of isochronous cycle at * which the packet arrived. For %FW_CDEV_EVENT_PHY_PACKET_SENT2 and non-ping packet, * the time stamp of isochronous cycle at which the packet was sent. For ping packet, * the tick count for round-trip time measured by 1394 OHCI controller. * The time stamp of isochronous cycle at which either the response was sent for * %FW_CDEV_EVENT_PHY_PACKET_SENT2 or the request arrived for * %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2. * @data: Incoming data * * If @type is %FW_CDEV_EVENT_PHY_PACKET_SENT2, @length is 8 and @data consists of the two PHY * packet quadlets to be sent, in host byte order, * * If @type is %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2, @length is 8 and @data consists of the two PHY * packet quadlets, in host byte order. * * For %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2, the @tstamp is the isochronous cycle at which the * packet arrived. It is 16 bit integer value and the higher 3 bits expresses three low order bits * of second field and the rest 13 bits expresses cycle field in the format of CYCLE_TIME register. * * For %FW_CDEV_EVENT_PHY_PACKET_SENT2, the @tstamp has different meanings whether to sent the * packet for ping or not. If it's not for ping, the @tstamp is the isochronous cycle at which the * packet was sent, and use the same format as the case of %FW_CDEV_EVENT_PHY_PACKET_SENT2. If it's * for ping, the @tstamp is for round-trip time measured by 1394 OHCI controller with 42.195 MHz * resolution. */ struct fw_cdev_event_phy_packet2 { __u64 closure; __u32 type; __u32 rcode; __u32 length; __u32 tstamp; __u32 data[]; }; /** * union fw_cdev_event - Convenience union of fw_cdev_event_* types * @common: Valid for all types * @bus_reset: Valid if @common.type == %FW_CDEV_EVENT_BUS_RESET * @response: Valid if @common.type == %FW_CDEV_EVENT_RESPONSE * @request: Valid if @common.type == %FW_CDEV_EVENT_REQUEST * @request2: Valid if @common.type == %FW_CDEV_EVENT_REQUEST2 * @iso_interrupt: Valid if @common.type == %FW_CDEV_EVENT_ISO_INTERRUPT * @iso_interrupt_mc: Valid if @common.type == * %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL * @iso_resource: Valid if @common.type == * %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED or * %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED * @phy_packet: Valid if @common.type == * %FW_CDEV_EVENT_PHY_PACKET_SENT or * %FW_CDEV_EVENT_PHY_PACKET_RECEIVED * * @request3: Valid if @common.type == %FW_CDEV_EVENT_REQUEST3 * @response2: Valid if @common.type == %FW_CDEV_EVENT_RESPONSE2 * @phy_packet2: Valid if @common.type == %FW_CDEV_EVENT_PHY_PACKET_SENT2 or * %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2 * * Convenience union for userspace use. Events could be read(2) into an * appropriately aligned char buffer and then cast to this union for further * processing. Note that for a request, response or iso_interrupt event, * the data[] or header[] may make the size of the full event larger than * sizeof(union fw_cdev_event). Also note that if you attempt to read(2) * an event into a buffer that is not large enough for it, the data that does * not fit will be discarded so that the next read(2) will return a new event. */ union fw_cdev_event { struct fw_cdev_event_common common; struct fw_cdev_event_bus_reset bus_reset; struct fw_cdev_event_response response; struct fw_cdev_event_request request; struct fw_cdev_event_request2 request2; /* added in 2.6.36 */ struct fw_cdev_event_iso_interrupt iso_interrupt; struct fw_cdev_event_iso_interrupt_mc iso_interrupt_mc; /* added in 2.6.36 */ struct fw_cdev_event_iso_resource iso_resource; /* added in 2.6.30 */ struct fw_cdev_event_phy_packet phy_packet; /* added in 2.6.36 */ struct fw_cdev_event_request3 request3; /* added in 6.5 */ struct fw_cdev_event_response2 response2; /* added in 6.5 */ struct fw_cdev_event_phy_packet2 phy_packet2; /* added in 6.5 */ }; /* available since kernel version 2.6.22 */ #define FW_CDEV_IOC_GET_INFO _IOWR('#', 0x00, struct fw_cdev_get_info) #define FW_CDEV_IOC_SEND_REQUEST _IOW('#', 0x01, struct fw_cdev_send_request) #define FW_CDEV_IOC_ALLOCATE _IOWR('#', 0x02, struct fw_cdev_allocate) #define FW_CDEV_IOC_DEALLOCATE _IOW('#', 0x03, struct fw_cdev_deallocate) #define FW_CDEV_IOC_SEND_RESPONSE _IOW('#', 0x04, struct fw_cdev_send_response) #define FW_CDEV_IOC_INITIATE_BUS_RESET _IOW('#', 0x05, struct fw_cdev_initiate_bus_reset) #define FW_CDEV_IOC_ADD_DESCRIPTOR _IOWR('#', 0x06, struct fw_cdev_add_descriptor) #define FW_CDEV_IOC_REMOVE_DESCRIPTOR _IOW('#', 0x07, struct fw_cdev_remove_descriptor) #define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IOWR('#', 0x08, struct fw_cdev_create_iso_context) #define FW_CDEV_IOC_QUEUE_ISO _IOWR('#', 0x09, struct fw_cdev_queue_iso) #define FW_CDEV_IOC_START_ISO _IOW('#', 0x0a, struct fw_cdev_start_iso) #define FW_CDEV_IOC_STOP_ISO _IOW('#', 0x0b, struct fw_cdev_stop_iso) /* available since kernel version 2.6.24 */ #define FW_CDEV_IOC_GET_CYCLE_TIMER _IOR('#', 0x0c, struct fw_cdev_get_cycle_timer) /* available since kernel version 2.6.30 */ #define FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE _IOWR('#', 0x0d, struct fw_cdev_allocate_iso_resource) #define FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE _IOW('#', 0x0e, struct fw_cdev_deallocate) #define FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE _IOW('#', 0x0f, struct fw_cdev_allocate_iso_resource) #define FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE_ONCE _IOW('#', 0x10, struct fw_cdev_allocate_iso_resource) #define FW_CDEV_IOC_GET_SPEED _IO('#', 0x11) /* returns speed code */ #define FW_CDEV_IOC_SEND_BROADCAST_REQUEST _IOW('#', 0x12, struct fw_cdev_send_request) #define FW_CDEV_IOC_SEND_STREAM_PACKET _IOW('#', 0x13, struct fw_cdev_send_stream_packet) /* available since kernel version 2.6.34 */ #define FW_CDEV_IOC_GET_CYCLE_TIMER2 _IOWR('#', 0x14, struct fw_cdev_get_cycle_timer2) /* available since kernel version 2.6.36 */ #define FW_CDEV_IOC_SEND_PHY_PACKET _IOWR('#', 0x15, struct fw_cdev_send_phy_packet) #define FW_CDEV_IOC_RECEIVE_PHY_PACKETS _IOW('#', 0x16, struct fw_cdev_receive_phy_packets) #define FW_CDEV_IOC_SET_ISO_CHANNELS _IOW('#', 0x17, struct fw_cdev_set_iso_channels) /* available since kernel version 3.4 */ #define FW_CDEV_IOC_FLUSH_ISO _IOW('#', 0x18, struct fw_cdev_flush_iso) /* * ABI version history * 1 (2.6.22) - initial version * (2.6.24) - added %FW_CDEV_IOC_GET_CYCLE_TIMER * 2 (2.6.30) - changed &fw_cdev_event_iso_interrupt.header if * &fw_cdev_create_iso_context.header_size is 8 or more * - added %FW_CDEV_IOC_*_ISO_RESOURCE*, * %FW_CDEV_IOC_GET_SPEED, %FW_CDEV_IOC_SEND_BROADCAST_REQUEST, * %FW_CDEV_IOC_SEND_STREAM_PACKET * (2.6.32) - added time stamp to xmit &fw_cdev_event_iso_interrupt * (2.6.33) - IR has always packet-per-buffer semantics now, not one of * dual-buffer or packet-per-buffer depending on hardware * - shared use and auto-response for FCP registers * 3 (2.6.34) - made &fw_cdev_get_cycle_timer reliable * - added %FW_CDEV_IOC_GET_CYCLE_TIMER2 * 4 (2.6.36) - added %FW_CDEV_EVENT_REQUEST2, %FW_CDEV_EVENT_PHY_PACKET_*, * and &fw_cdev_allocate.region_end * - implemented &fw_cdev_event_bus_reset.bm_node_id * - added %FW_CDEV_IOC_SEND_PHY_PACKET, _RECEIVE_PHY_PACKETS * - added %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL, * %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL, and * %FW_CDEV_IOC_SET_ISO_CHANNELS * 5 (3.4) - send %FW_CDEV_EVENT_ISO_INTERRUPT events when needed to * avoid dropping data * - added %FW_CDEV_IOC_FLUSH_ISO * 6 (6.5) - added some event for subactions of asynchronous transaction with time stamp * - %FW_CDEV_EVENT_REQUEST3 * - %FW_CDEV_EVENT_RESPONSE2 * - %FW_CDEV_EVENT_PHY_PACKET_SENT2 * - %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2 */ /** * struct fw_cdev_get_info - General purpose information ioctl * @version: The version field is just a running serial number. Both an * input parameter (ABI version implemented by the client) and * output parameter (ABI version implemented by the kernel). * A client shall fill in the ABI @version for which the client * was implemented. This is necessary for forward compatibility. * @rom_length: If @rom is non-zero, up to @rom_length bytes of Configuration * ROM will be copied into that user space address. In either * case, @rom_length is updated with the actual length of the * Configuration ROM. * @rom: If non-zero, address of a buffer to be filled by a copy of the * device's Configuration ROM * @bus_reset: If non-zero, address of a buffer to be filled by a * &struct fw_cdev_event_bus_reset with the current state * of the bus. This does not cause a bus reset to happen. * @bus_reset_closure: Value of &closure in this and subsequent bus reset events * @card: The index of the card this device belongs to * * The %FW_CDEV_IOC_GET_INFO ioctl is usually the very first one which a client * performs right after it opened a /dev/fw* file. * * As a side effect, reception of %FW_CDEV_EVENT_BUS_RESET events to be read(2) * is started by this ioctl. */ struct fw_cdev_get_info { __u32 version; __u32 rom_length; __u64 rom; __u64 bus_reset; __u64 bus_reset_closure; __u32 card; }; /** * struct fw_cdev_send_request - Send an asynchronous request packet * @tcode: Transaction code of the request * @length: Length of outgoing payload, in bytes * @offset: 48-bit offset at destination node * @closure: Passed back to userspace in the response event * @data: Userspace pointer to payload * @generation: The bus generation where packet is valid * * Send a request to the device. This ioctl implements all outgoing requests. Both quadlet and * block request specify the payload as a pointer to the data in the @data field. Once the * transaction completes, the kernel writes either &fw_cdev_event_response event or * &fw_cdev_event_response event back. The @closure field is passed back to user space in the * response event. */ struct fw_cdev_send_request { __u32 tcode; __u32 length; __u64 offset; __u64 closure; __u64 data; __u32 generation; }; /** * struct fw_cdev_send_response - Send an asynchronous response packet * @rcode: Response code as determined by the userspace handler * @length: Length of outgoing payload, in bytes * @data: Userspace pointer to payload * @handle: The handle from the &fw_cdev_event_request * * Send a response to an incoming request. By setting up an address range using * the %FW_CDEV_IOC_ALLOCATE ioctl, userspace can listen for incoming requests. An * incoming request will generate an %FW_CDEV_EVENT_REQUEST, and userspace must * send a reply using this ioctl. The event has a handle to the kernel-side * pending transaction, which should be used with this ioctl. */ struct fw_cdev_send_response { __u32 rcode; __u32 length; __u64 data; __u32 handle; }; /** * struct fw_cdev_allocate - Allocate a CSR in an address range * @offset: Start offset of the address range * @closure: To be passed back to userspace in request events * @length: Length of the CSR, in bytes * @handle: Handle to the allocation, written by the kernel * @region_end: First address above the address range (added in ABI v4, 2.6.36) * * Allocate an address range in the 48-bit address space on the local node * (the controller). This allows userspace to listen for requests with an * offset within that address range. Every time when the kernel receives a * request within the range, an &fw_cdev_event_request2 event will be emitted. * (If the kernel or the client implements ABI version <= 3, an * &fw_cdev_event_request will be generated instead.) * * The @closure field is passed back to userspace in these request events. * The @handle field is an out parameter, returning a handle to the allocated * range to be used for later deallocation of the range. * * The address range is allocated on all local nodes. The address allocation * is exclusive except for the FCP command and response registers. If an * exclusive address region is already in use, the ioctl fails with errno set * to %EBUSY. * * If kernel and client implement ABI version >= 4, the kernel looks up a free * spot of size @length inside [@offset..@region_end) and, if found, writes * the start address of the new CSR back in @offset. I.e. @offset is an * in and out parameter. If this automatic placement of a CSR in a bigger * address range is not desired, the client simply needs to set @region_end * = @offset + @length. * * If the kernel or the client implements ABI version <= 3, @region_end is * ignored and effectively assumed to be @offset + @length. * * @region_end is only present in a kernel header >= 2.6.36. If necessary, * this can for example be tested by #ifdef FW_CDEV_EVENT_REQUEST2. */ struct fw_cdev_allocate { __u64 offset; __u64 closure; __u32 length; __u32 handle; __u64 region_end; /* available since kernel version 2.6.36 */ }; /** * struct fw_cdev_deallocate - Free a CSR address range or isochronous resource * @handle: Handle to the address range or iso resource, as returned by the * kernel when the range or resource was allocated */ struct fw_cdev_deallocate { __u32 handle; }; #define FW_CDEV_LONG_RESET 0 #define FW_CDEV_SHORT_RESET 1 /** * struct fw_cdev_initiate_bus_reset - Initiate a bus reset * @type: %FW_CDEV_SHORT_RESET or %FW_CDEV_LONG_RESET * * Initiate a bus reset for the bus this device is on. The bus reset can be * either the original (long) bus reset or the arbitrated (short) bus reset * introduced in 1394a-2000. * * The ioctl returns immediately. A subsequent &fw_cdev_event_bus_reset * indicates when the reset actually happened. Since ABI v4, this may be * considerably later than the ioctl because the kernel ensures a grace period * between subsequent bus resets as per IEEE 1394 bus management specification. */ struct fw_cdev_initiate_bus_reset { __u32 type; }; /** * struct fw_cdev_add_descriptor - Add contents to the local node's config ROM * @immediate: If non-zero, immediate key to insert before pointer * @key: Upper 8 bits of root directory pointer * @data: Userspace pointer to contents of descriptor block * @length: Length of descriptor block data, in quadlets * @handle: Handle to the descriptor, written by the kernel * * Add a descriptor block and optionally a preceding immediate key to the local * node's Configuration ROM. * * The @key field specifies the upper 8 bits of the descriptor root directory * pointer and the @data and @length fields specify the contents. The @key * should be of the form 0xXX000000. The offset part of the root directory entry * will be filled in by the kernel. * * If not 0, the @immediate field specifies an immediate key which will be * inserted before the root directory pointer. * * @immediate, @key, and @data array elements are CPU-endian quadlets. * * If successful, the kernel adds the descriptor and writes back a @handle to * the kernel-side object to be used for later removal of the descriptor block * and immediate key. The kernel will also generate a bus reset to signal the * change of the Configuration ROM to other nodes. * * This ioctl affects the Configuration ROMs of all local nodes. * The ioctl only succeeds on device files which represent a local node. */ struct fw_cdev_add_descriptor { __u32 immediate; __u32 key; __u64 data; __u32 length; __u32 handle; }; /** * struct fw_cdev_remove_descriptor - Remove contents from the Configuration ROM * @handle: Handle to the descriptor, as returned by the kernel when the * descriptor was added * * Remove a descriptor block and accompanying immediate key from the local * nodes' Configuration ROMs. The kernel will also generate a bus reset to * signal the change of the Configuration ROM to other nodes. */ struct fw_cdev_remove_descriptor { __u32 handle; }; #define FW_CDEV_ISO_CONTEXT_TRANSMIT 0 #define FW_CDEV_ISO_CONTEXT_RECEIVE 1 #define FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL 2 /* added in 2.6.36 */ /** * struct fw_cdev_create_iso_context - Create a context for isochronous I/O * @type: %FW_CDEV_ISO_CONTEXT_TRANSMIT or %FW_CDEV_ISO_CONTEXT_RECEIVE or * %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL * @header_size: Header size to strip in single-channel reception * @channel: Channel to bind to in single-channel reception or transmission * @speed: Transmission speed * @closure: To be returned in &fw_cdev_event_iso_interrupt or * &fw_cdev_event_iso_interrupt_multichannel * @handle: Handle to context, written back by kernel * * Prior to sending or receiving isochronous I/O, a context must be created. * The context records information about the transmit or receive configuration * and typically maps to an underlying hardware resource. A context is set up * for either sending or receiving. It is bound to a specific isochronous * @channel. * * In case of multichannel reception, @header_size and @channel are ignored * and the channels are selected by %FW_CDEV_IOC_SET_ISO_CHANNELS. * * For %FW_CDEV_ISO_CONTEXT_RECEIVE contexts, @header_size must be at least 4 * and must be a multiple of 4. It is ignored in other context types. * * @speed is ignored in receive context types. * * If a context was successfully created, the kernel writes back a handle to the * context, which must be passed in for subsequent operations on that context. * * Limitations: * No more than one iso context can be created per fd. * The total number of contexts that all userspace and kernelspace drivers can * create on a card at a time is a hardware limit, typically 4 or 8 contexts per * direction, and of them at most one multichannel receive context. */ struct fw_cdev_create_iso_context { __u32 type; __u32 header_size; __u32 channel; __u32 speed; __u64 closure; __u32 handle; }; /** * struct fw_cdev_set_iso_channels - Select channels in multichannel reception * @channels: Bitmask of channels to listen to * @handle: Handle of the mutichannel receive context * * @channels is the bitwise or of 1ULL << n for each channel n to listen to. * * The ioctl fails with errno %EBUSY if there is already another receive context * on a channel in @channels. In that case, the bitmask of all unoccupied * channels is returned in @channels. */ struct fw_cdev_set_iso_channels { __u64 channels; __u32 handle; }; #define FW_CDEV_ISO_PAYLOAD_LENGTH(v) (v) #define FW_CDEV_ISO_INTERRUPT (1 << 16) #define FW_CDEV_ISO_SKIP (1 << 17) #define FW_CDEV_ISO_SYNC (1 << 17) #define FW_CDEV_ISO_TAG(v) ((v) << 18) #define FW_CDEV_ISO_SY(v) ((v) << 20) #define FW_CDEV_ISO_HEADER_LENGTH(v) ((v) << 24) /** * struct fw_cdev_iso_packet - Isochronous packet * @control: Contains the header length (8 uppermost bits), * the sy field (4 bits), the tag field (2 bits), a sync flag * or a skip flag (1 bit), an interrupt flag (1 bit), and the * payload length (16 lowermost bits) * @header: Header and payload in case of a transmit context. * * &struct fw_cdev_iso_packet is used to describe isochronous packet queues. * Use the FW_CDEV_ISO_* macros to fill in @control. * The @header array is empty in case of receive contexts. * * Context type %FW_CDEV_ISO_CONTEXT_TRANSMIT: * * @control.HEADER_LENGTH must be a multiple of 4. It specifies the numbers of * bytes in @header that will be prepended to the packet's payload. These bytes * are copied into the kernel and will not be accessed after the ioctl has * returned. * * The @control.SY and TAG fields are copied to the iso packet header. These * fields are specified by IEEE 1394a and IEC 61883-1. * * The @control.SKIP flag specifies that no packet is to be sent in a frame. * When using this, all other fields except @control.INTERRUPT must be zero. * * When a packet with the @control.INTERRUPT flag set has been completed, an * &fw_cdev_event_iso_interrupt event will be sent. * * Context type %FW_CDEV_ISO_CONTEXT_RECEIVE: * * @control.HEADER_LENGTH must be a multiple of the context's header_size. * If the HEADER_LENGTH is larger than the context's header_size, multiple * packets are queued for this entry. * * The @control.SY and TAG fields are ignored. * * If the @control.SYNC flag is set, the context drops all packets until a * packet with a sy field is received which matches &fw_cdev_start_iso.sync. * * @control.PAYLOAD_LENGTH defines how many payload bytes can be received for * one packet (in addition to payload quadlets that have been defined as headers * and are stripped and returned in the &fw_cdev_event_iso_interrupt structure). * If more bytes are received, the additional bytes are dropped. If less bytes * are received, the remaining bytes in this part of the payload buffer will not * be written to, not even by the next packet. I.e., packets received in * consecutive frames will not necessarily be consecutive in memory. If an * entry has queued multiple packets, the PAYLOAD_LENGTH is divided equally * among them. * * When a packet with the @control.INTERRUPT flag set has been completed, an * &fw_cdev_event_iso_interrupt event will be sent. An entry that has queued * multiple receive packets is completed when its last packet is completed. * * Context type %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL: * * Here, &fw_cdev_iso_packet would be more aptly named _iso_buffer_chunk since * it specifies a chunk of the mmap()'ed buffer, while the number and alignment * of packets to be placed into the buffer chunk is not known beforehand. * * @control.PAYLOAD_LENGTH is the size of the buffer chunk and specifies room * for header, payload, padding, and trailer bytes of one or more packets. * It must be a multiple of 4. * * @control.HEADER_LENGTH, TAG and SY are ignored. SYNC is treated as described * for single-channel reception. * * When a buffer chunk with the @control.INTERRUPT flag set has been filled * entirely, an &fw_cdev_event_iso_interrupt_mc event will be sent. */ struct fw_cdev_iso_packet { __u32 control; __u32 header[]; }; /** * struct fw_cdev_queue_iso - Queue isochronous packets for I/O * @packets: Userspace pointer to an array of &fw_cdev_iso_packet * @data: Pointer into mmap()'ed payload buffer * @size: Size of the @packets array, in bytes * @handle: Isochronous context handle * * Queue a number of isochronous packets for reception or transmission. * This ioctl takes a pointer to an array of &fw_cdev_iso_packet structs, * which describe how to transmit from or receive into a contiguous region * of a mmap()'ed payload buffer. As part of transmit packet descriptors, * a series of headers can be supplied, which will be prepended to the * payload during DMA. * * The kernel may or may not queue all packets, but will write back updated * values of the @packets, @data and @size fields, so the ioctl can be * resubmitted easily. * * In case of a multichannel receive context, @data must be quadlet-aligned * relative to the buffer start. */ struct fw_cdev_queue_iso { __u64 packets; __u64 data; __u32 size; __u32 handle; }; #define FW_CDEV_ISO_CONTEXT_MATCH_TAG0 1 #define FW_CDEV_ISO_CONTEXT_MATCH_TAG1 2 #define FW_CDEV_ISO_CONTEXT_MATCH_TAG2 4 #define FW_CDEV_ISO_CONTEXT_MATCH_TAG3 8 #define FW_CDEV_ISO_CONTEXT_MATCH_ALL_TAGS 15 /** * struct fw_cdev_start_iso - Start an isochronous transmission or reception * @cycle: Cycle in which to start I/O. If @cycle is greater than or * equal to 0, the I/O will start on that cycle. * @sync: Determines the value to wait for receive packets that have * the %FW_CDEV_ISO_SYNC bit set * @tags: Tag filter bit mask. Only valid for isochronous reception. * Determines the tag values for which packets will be accepted. * Use FW_CDEV_ISO_CONTEXT_MATCH_* macros to set @tags. * @handle: Isochronous context handle within which to transmit or receive */ struct fw_cdev_start_iso { __s32 cycle; __u32 sync; __u32 tags; __u32 handle; }; /** * struct fw_cdev_stop_iso - Stop an isochronous transmission or reception * @handle: Handle of isochronous context to stop */ struct fw_cdev_stop_iso { __u32 handle; }; /** * struct fw_cdev_flush_iso - flush completed iso packets * @handle: handle of isochronous context to flush * * For %FW_CDEV_ISO_CONTEXT_TRANSMIT or %FW_CDEV_ISO_CONTEXT_RECEIVE contexts, * report any completed packets. * * For %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL contexts, report the current * offset in the receive buffer, if it has changed; this is typically in the * middle of some buffer chunk. * * Any %FW_CDEV_EVENT_ISO_INTERRUPT or %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL * events generated by this ioctl are sent synchronously, i.e., are available * for reading from the file descriptor when this ioctl returns. */ struct fw_cdev_flush_iso { __u32 handle; }; /** * struct fw_cdev_get_cycle_timer - read cycle timer register * @local_time: system time, in microseconds since the Epoch * @cycle_timer: Cycle Time register contents * * Same as %FW_CDEV_IOC_GET_CYCLE_TIMER2, but fixed to use %CLOCK_REALTIME * and only with microseconds resolution. * * In version 1 and 2 of the ABI, this ioctl returned unreliable (non- * monotonic) @cycle_timer values on certain controllers. */ struct fw_cdev_get_cycle_timer { __u64 local_time; __u32 cycle_timer; }; /** * struct fw_cdev_get_cycle_timer2 - read cycle timer register * @tv_sec: system time, seconds * @tv_nsec: system time, sub-seconds part in nanoseconds * @clk_id: input parameter, clock from which to get the system time * @cycle_timer: Cycle Time register contents * * The %FW_CDEV_IOC_GET_CYCLE_TIMER2 ioctl reads the isochronous cycle timer * and also the system clock. This allows to correlate reception time of * isochronous packets with system time. * * @clk_id lets you choose a clock like with POSIX' clock_gettime function. * Supported @clk_id values are POSIX' %CLOCK_REALTIME and %CLOCK_MONOTONIC * and Linux' %CLOCK_MONOTONIC_RAW. * * @cycle_timer consists of 7 bits cycleSeconds, 13 bits cycleCount, and * 12 bits cycleOffset, in host byte order. Cf. the Cycle Time register * per IEEE 1394 or Isochronous Cycle Timer register per OHCI-1394. */ struct fw_cdev_get_cycle_timer2 { __s64 tv_sec; __s32 tv_nsec; __s32 clk_id; __u32 cycle_timer; }; /** * struct fw_cdev_allocate_iso_resource - (De)allocate a channel or bandwidth * @closure: Passed back to userspace in corresponding iso resource events * @channels: Isochronous channels of which one is to be (de)allocated * @bandwidth: Isochronous bandwidth units to be (de)allocated * @handle: Handle to the allocation, written by the kernel (only valid in * case of %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE ioctls) * * The %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE ioctl initiates allocation of an * isochronous channel and/or of isochronous bandwidth at the isochronous * resource manager (IRM). Only one of the channels specified in @channels is * allocated. An %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED is sent after * communication with the IRM, indicating success or failure in the event data. * The kernel will automatically reallocate the resources after bus resets. * Should a reallocation fail, an %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED event * will be sent. The kernel will also automatically deallocate the resources * when the file descriptor is closed. * * The %FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE ioctl can be used to initiate * deallocation of resources which were allocated as described above. * An %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED event concludes this operation. * * The %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE ioctl is a variant of allocation * without automatic re- or deallocation. * An %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED event concludes this operation, * indicating success or failure in its data. * * The %FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE_ONCE ioctl works like * %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE except that resources are freed * instead of allocated. * An %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED event concludes this operation. * * To summarize, %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE allocates iso resources * for the lifetime of the fd or @handle. * In contrast, %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE allocates iso resources * for the duration of a bus generation. * * @channels is a host-endian bitfield with the least significant bit * representing channel 0 and the most significant bit representing channel 63: * 1ULL << c for each channel c that is a candidate for (de)allocation. * * @bandwidth is expressed in bandwidth allocation units, i.e. the time to send * one quadlet of data (payload or header data) at speed S1600. */ struct fw_cdev_allocate_iso_resource { __u64 closure; __u64 channels; __u32 bandwidth; __u32 handle; }; /** * struct fw_cdev_send_stream_packet - send an asynchronous stream packet * @length: Length of outgoing payload, in bytes * @tag: Data format tag * @channel: Isochronous channel to transmit to * @sy: Synchronization code * @closure: Passed back to userspace in the response event * @data: Userspace pointer to payload * @generation: The bus generation where packet is valid * @speed: Speed to transmit at * * The %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl sends an asynchronous stream packet to every device * which is listening to the specified channel. The kernel writes either &fw_cdev_event_response * event or &fw_cdev_event_response2 event which indicates success or failure of the transmission. */ struct fw_cdev_send_stream_packet { __u32 length; __u32 tag; __u32 channel; __u32 sy; __u64 closure; __u64 data; __u32 generation; __u32 speed; }; /** * struct fw_cdev_send_phy_packet - send a PHY packet * @closure: Passed back to userspace in the PHY-packet-sent event * @data: First and second quadlet of the PHY packet * @generation: The bus generation where packet is valid * * The %FW_CDEV_IOC_SEND_PHY_PACKET ioctl sends a PHY packet to all nodes on the same card as this * device. After transmission, either %FW_CDEV_EVENT_PHY_PACKET_SENT event or * %FW_CDEV_EVENT_PHY_PACKET_SENT event is generated. * * The payload @data\[\] shall be specified in host byte order. Usually, * @data\[1\] needs to be the bitwise inverse of @data\[0\]. VersaPHY packets * are an exception to this rule. * * The ioctl is only permitted on device files which represent a local node. */ struct fw_cdev_send_phy_packet { __u64 closure; __u32 data[2]; __u32 generation; }; /** * struct fw_cdev_receive_phy_packets - start reception of PHY packets * @closure: Passed back to userspace in phy packet events * * This ioctl activates issuing of either %FW_CDEV_EVENT_PHY_PACKET_RECEIVED or * %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2 due to incoming PHY packets from any node on the same bus * as the device. * * The ioctl is only permitted on device files which represent a local node. */ struct fw_cdev_receive_phy_packets { __u64 closure; }; #define FW_CDEV_VERSION 3 /* Meaningless legacy macro; don't use it. */ #endif /* _LINUX_FIREWIRE_CDEV_H */