1103285Sikob$FreeBSD: releng/11.0/sys/dev/firewire/00README 215334 2010-11-15 05:25:51Z dougb $ 2103285Sikob 3103285SikobIEEE 1394 support for FreeBSD-5.X and 4.X. 4103285Sikob 5103285Sikob1. Introduction 6103285Sikob 7103285Sikob This tarball contains IEEE1394(FireWire) driver which is first 8103285Sikob written by Katsushi Kobayashi[1] <ikob@koganei.wide.ad.jp> and 9103285Sikob modified by Hidetoshi Shimokawa <simokawa@freebsd.org>. 10103285Sikob Please note this driver is still under development. 11103285Sikob You can find latest snapshots under: 12103285Sikob http://people.freebsd.org/~simokawa/ 13103285Sikob named firewire-2002XXXX.tar.gz 14103285Sikob 15103285Sikob The driver consists of 6 parts: 16103285Sikob 17103285Sikob - fwohci.c/fwohci_pci.c 18103285Sikob OHCI[2] driver 19103285Sikob - IEEE1394 link/phy chip control 20103285Sikob - firewire.c 21103285Sikob Chip independent driver 22103285Sikob - CSR 23103285Sikob - Transaction 24103285Sikob - Character devices for userland 25103285Sikob - fwmem.c 26103285Sikob /dev/fwmem0: physical memory of a remote node. 27103285Sikob - sbp.c 28103285Sikob SBP-II[3] (a.k.a. SCSI over FireWire) driver 29103285Sikob 30103285Sikob - if_fwe.c 31103285Sikob NON-Standard implementation of Ethernet over FireWire. 32103285Sikob 33103285Sikob - bus_mgm.c (userland) 34103285Sikob Bus management function for user. 35103285Sikob show topology map, change gap count, bus reset, etc. 36103285Sikob 37103285Sikob2. Installation 38103285Sikob 39103285Sikob Suppose you have kernel source at /sys. 40103285Sikob 41103285Sikob - Extract tarball at root directory. 42103285Sikob - cd /sys/dev/firewire 43103285Sikob - make 44103285Sikob - make install 45103285Sikob - make load 46103285Sikob 47103285Sikob3. SBP-II support (sbp) 48103285Sikob 49103285Sikob - You need CAM(SCSI) support in your kernel. 50103285Sikob If you are using FreeBSD-5 before 2002/03/23 or FreeBSD-4 before 51103285Sikob 2002/4/8, you need to apply CAM-patch in this archive 52103285Sikob to handle HDD's(T_RBC or T_DIRECT which doesn't support READ_6). 53103285Sikob 54103285Sikob - If you connect a few firewire devices only, try the following to 55103285Sikob reduce gap overhead. 56103285Sikob 57103285Sikob - ./bus_mgm -g 8 58103285Sikob 59103285Sikob4. Ethernet over FireWire (if_fwe) 60103285Sikob 61103285Sikob This is a sample driver for ethernet emulation. Please note this 62103285Sikob does NOT conform to any standards like IP over FireWire(RFC2734[4]). 63103285Sikob It just sends ethernet frames encapsulated in asynchronous stream 64103285Sikob 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 65103285Sikob facilities what ethernet can do. (ipv6, bridging, vlan etc.) 66103285Sikob 67103285Sikob It also has DEVICE_POLLING[5] support. To enable it, edit your 68103285Sikob kernel config file and Makefile.fwe then rebuild kernel and if_fwe.ko. 69103285Sikob 70103285Sikob5. FireWire for Kernel Hackers 71103285Sikob 72103285Sikob As you know, IEEE1394 is a bus and OHCI supports physical access 73103285Sikob to the host memory. This means that you can access the remote 74103285Sikob host over firewire without software support at the remote host. 75103285Sikob In other words, you can investigate remote host's physical memory 76103285Sikob whether its OS is alive or crashed or hangs up. 77103285Sikob 78103285Sikob You need to apply KVMLIB-patch and rebuild libkvm then rebuild ps, 79103285Sikob dmesg and gdb those are statically linked. 80103285Sikob You may want to apply GDB-patch in this archive to get same behavior 81103285Sikob as gdb with /dev/mem or want to insert savectx(&dumppcb) into panic(), 82103285Sikob breakpoint() and so on to emulation crash dump. 83103285Sikob 84103285Sikob You have to determine target node_id manually at this point. 85103285Sikob (guess using bus_mgm -t or dmesg) 86103285Sikob (Targets should be specified by EUI64 in the future) 87103285Sikob 88103285Sikob # sysctl kern.firewire.fwmem_node=[node_id] 89103285Sikob 90103285Sikob # ps -agx -M /dev/fwmem0 -N /sys/i386/compile/GENERIC/kernel 91103285Sikob # dmesg -M /dev/fwmem0 -N /sys/i386/compile/GENERIC/kernel 92103285Sikob # gdb -k -c /dev/fwmem0 /sys/i386/compile/GENERIC/kernel.debug 93103285Sikob # dd if=/dev/fwmem0 of=vmcore bs=1m count=[phys. memory in MB] 94103285Sikob 95103285Sikob remote gdb at 400,000,000 bps :-) 96103285Sikob 97103285Sikob 98103285Sikob6. DV 99103285Sikob I have not tested yet. 100103285Sikob 101103285Sikob7. Tested HW 102103285Sikob 103103285Sikob OS 104103285Sikob - FreeBSD-4/i386 105103285Sikob - FreeBSD-4/alpha 106103285Sikob - FreeBSD-5/i386 107103285Sikob 108103285Sikob * Not tested on SMP. 109103285Sikob * Not tested on big-endian machine... 110103285Sikob 111103285Sikob OHCI 112103285Sikob - Texas Instruments TSB12LV26 (PCI) 113103285Sikob - Texas Instruments TSB43AA22 (PCI/Cardbus) 114103285Sikob 115103285Sikob * There might be phy probing problem but most of the OHCI 116103285Sikob chips should work. 117103285Sikob * Tested with multiple firewire buses. 118103285Sikob 119103285Sikob SBP-II 120103285Sikob - HDD: Logitec USB/FireWire LHD-P30FU 121103285Sikob - HDD: Yano A-dish 120GB 122103285Sikob - HDD: Yano B-Max 320GB 123103285Sikob The repository of cvsup2.jp.freebsd.org is on this device. 124103285Sikob - HDD: Personal Storage 3000XT 160GB 125103285Sikob The last sector of this drive cannot be accessed.. 126103285Sikob - DVD-RAM: Panasonic LF-D340JD 127103285Sikob - SCSI-FireWire converter: Yano FWSCSI-01 128103285Sikob We can recognize only 1 device/lun at this point 129103285Sikob - HDD: iPod, PowerBook G4 (target mode) 130103285Sikob Reported by ikob 131103285Sikob - Scanner: Epson GT-9700F 132103285Sikob Now works!! 133103285Sikob Sane-backend needs a patch(SANE-patch in this archive). 134103285Sikob 135103285Sikob if_fwe 136103285Sikob - IPv4, IPv6, bridging, vlan. 137103285Sikob - You need at least two FreeBSD machines with this driver to use. 138103285Sikob 139103285SikobReferences: 140103285Sikob[1] ftp://ftp.uec.ac.jp/pub/firewire/beta/ 141103285Sikob[2] http://developer.intel.com/technology/1394/download/ohci_11.htm 142103285Sikob[3] http://www.t10.org/scsi-3.htm 143103285Sikob[4] http://www.faqs.org/rfcs/rfc2734.html 144103285Sikob[5] http://info.iet.unipi.it/~luigi/polling/ 145103285Sikob 146103285Sikob 147103285SikobHidetoshi Shimokawa 148103285Sikobsimokawa@freebsd.org 149