1 $FreeBSD: src/sys/dev/firewire/00README,v 1.1.4.2 2003/02/10 07:17:25 simokawa Exp $
3 IEEE 1394 support for FreeBSD-5.X and 4.X.
7 This tarball contains IEEE1394(FireWire) driver which is first
8 written by Katsushi Kobayashi[1] <ikob@koganei.wide.ad.jp> and
9 modified by Hidetoshi Shimokawa <simokawa@freebsd.org>.
10 Please note this driver is still under development.
11 You can find latest snapshots under:
12 http://people.freebsd.org/~simokawa/
13 named firewire-2002XXXX.tar.gz
15 The driver consists of 6 parts:
17 - fwohci.c/fwohci_pci.c
19 - IEEE1394 link/phy chip control
21 Chip independent driver
24 - Character devices for userland
26 /dev/fwmem0: physical memory of a remote node.
28 SBP-II[3] (a.k.a. SCSI over FireWire) driver
31 NON-Standard implementation of Ethernet over FireWire.
33 - bus_mgm.c (userland)
34 Bus management function for user.
35 show topology map, change gap count, bus reset, etc.
39 Suppose you have kernel source at /sys.
41 - Extract tarball at root directory.
42 - cd /sys/dev/firewire
51 3. SBP-II support (sbp)
53 - You need CAM(SCSI) support in your kernel.
54 If you are using FreeBSD-5 before 2002/03/23 or FreeBSD-4 before
55 2002/4/8, you need to apply CAM-patch in this archive
56 to handle HDD's(T_RBC or T_DIRECT which doesn't support READ_6).
58 - If you connect a few firewire devices only, try the following to
63 4. Ethernet over FireWire (if_fwe)
65 This is a sample driver for ethernet emulation. Please note this
66 does NOT conform to any standards like IP over FireWire(RFC2734[4]).
67 It just sends ethernet frames encapsulated in asynchronous stream
68 packets. It doesn't scale because it does something like unicast over multicast, but it's easy to be implemented and you can use any
69 facilities what ethernet can do. (ipv6, bridging, vlan etc.)
71 It also has DEVICE_POLLING[5] support. To enable it, edit your
72 kernel config file and Makefile.fwe then rebuild kernel and if_fwe.ko.
73 Note this driver checks kern.polling.enable only when enabling the
74 interface. When you enable polling after the interface is up,
75 try 'ifconfig fwe0 down;ifconfig fwe0 up'.
77 5. FireWire for Kernel Hackers
79 As you know, IEEE1394 is a bus and OHCI supports physical access
80 to the host memory. This means that you can access the remote
81 host over firewire without software support at the remote host.
82 In other words, you can investigate remote host's physical memory
83 whether its OS is alive or crashed or hangs up.
85 You need to apply KVMLIB-patch and rebuild libkvm then rebuild ps,
86 dmesg and gdb those are statically linked.
87 You may want to apply GDB-patch in this archive to get same behavior
88 as gdb with /dev/mem or want to insert savectx(&dumppcb) into panic(),
89 breakpoint() and so on to emulation crash dump.
91 You have to determine target node_id manually at this point.
92 (guess using bus_mgm -t or dmesg)
93 (Targets should be specified by EUI64 in the future)
95 # sysctl kern.firewire.fwmem_node=[node_id]
97 # ps -agx -M /dev/fwmem0 -N /sys/i386/compile/GENERIC/kernel
98 # dmesg -M /dev/fwmem0 -N /sys/i386/compile/GENERIC/kernel
99 # gdb -k -c /dev/fwmem0 /sys/i386/compile/GENERIC/kernel.debug
100 # dd if=/dev/fwmem0 of=vmcore bs=1m count=[phys. memory in MB]
102 remote gdb at 400,000,000 bps :-)
106 I have not tested yet.
116 * Not tested on big-endian machine...
119 - Texas Instruments TSB12LV26 (PCI)
120 - Texas Instruments TSB43AA22 (PCI/Cardbus)
122 * There might be phy probing problem but most of the OHCI
124 * Tested with multiple firewire buses.
127 - HDD: Logitec USB/FireWire LHD-P30FU
128 - HDD: Yano A-dish 120GB
129 - HDD: Yano B-Max 320GB
130 The repository of cvsup2.jp.freebsd.org is on this device.
131 - HDD: Personal Storage 3000XT 160GB
132 The last sector of this drive cannot be accessed..
133 - DVD-RAM: Panasonic LF-D340JD
134 - SCSI-FireWire converter: Yano FWSCSI-01
135 We can recognize only 1 device/lun at this point
136 - HDD: iPod, PowerBook G4 (target mode)
138 - Scanner: Epson GT-9700F
140 Sane-backend needs a patch(SANE-patch in this archive).
143 - IPv4, IPv6, bridging, vlan.
144 - You need at least two FreeBSD machines with this driver to use.
147 [1] ftp://ftp.uec.ac.jp/pub/firewire/beta/
148 [2] http://developer.intel.com/technology/1394/download/ohci_11.htm
149 [3] http://www.t10.org/scsi-3.htm
150 [4] http://www.faqs.org/rfcs/rfc2734.html
151 [5] http://info.iet.unipi.it/~luigi/polling/