FreeBSD src
585f796613
changers that don't support the DVCID and CURDATA bits that were introduced in the SMC spec. These changers will return an Illegal Request type error if the bits are set. This causes "chio status" to fail. The fix is two-fold. First, for changers that claim to be SCSI-2 or older, don't set the DVCID and CURDATA bits for READ ELEMENT STATUS. For newer changers (SCSI-3 and newer), we default to setting the new bits, but back off and try the READ ELEMENT STATUS without the bits if we get an Illegal Request type error. This has been tested on a Qualstar TLS-8211, which is a SCSI-2 changer that does not support the new bits, and a Spectra T-380, which is a SCSI-3 changer that does support the new bits. In the absence of a SCSI-3 changer that does not support the bits, I tested that with some error injection code. (The SMC spec says that support for CURDATA is mandatory, and DVCID is optional.) scsi_ch.c: Add a new quirk, CH_Q_NO_DVCID that gets set for SCSI-2 and older libraries, or newer libraries that report errors when the DVCID/CURDATA bits are set. In chgetelemstatus(), use the new quirk to determine whether or not to set DVCID and CURDATA. If we get an error with the bits set, back off and try without the bits. Set the quirk flag if the read element status succeeds without the bits set. Increase the READ ELEMENT STATUS timeout to 60 seconds after testing with a Spectra T-380. The previous value was 10 seconds, and too short for the T-380. This may be decreased later after some additional testing and investigation. Tested by: Andre Albsmeier <Andre.Albsmeier@siemens.com> Sponsored by: Spectra Logic MFC after: 3 days |
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| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| ObsoleteFiles.inc | ||
| README | ||
| UPDATING | ||
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel, the kernel-modules and the contents of /etc. The ``world'' target should only be used in cases where the source tree has not changed from the currently running version. See: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables. The ``buildkernel'' and ``installkernel'' targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process, documentation for which can be found at: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html And in the config(8) man page. Note: If you want to build and install the kernel with the ``buildkernel'' and ``installkernel'' targets, you might need to build world before. More information is available in the handbook. The sample kernel configuration files reside in the sys/<arch>/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file NOTES contains entries and documentation for all possible devices, not just those commonly used. It is the successor of the ancient LINT file, but in contrast to LINT, it is not buildable as a kernel but a pure reference and documentation file. Source Roadmap: --------------- bin System/user commands. cddl Various commands and libraries under the Common Development and Distribution License. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberos5 Kerberos5 (Heimdal) package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. rescue Build system for statically linked /rescue utilities. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html