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8ecec21da6
Fix a few panics during error recovery: 1) Stupid mistake in the "no SCB match handler" where I was using the wrong variable (busy_scbid instead of scb_index). 2) Unbusy the target of an abort request if the command we are trying to abort is an untagged transaction. If we don't, we get a fatal NO_MATCH_BUSY condition which "should never happen". 3) When an abort completes, turn off ahc->in_timeout or else the next timeout will hit the protective "scb timesout again" panic. 4) Fix a typo that caused the requeued "abort" SCB to have its TAG_ENB and disconnect bits to be cleared (missing ~) so that devices would complain about overlapped commands. Be sure to turn off the unexpected busfree interrupt after we do a bus reset since we are expecting the bus to go free in that case. Return XS_TIMEOUT instead of XS_DRIVERSTUFFUP in certain scenarios. XS_TIMEOUT allows for retries, XS_DRIVERSTUFFUP does not. Allow commands with SDTR and WDTR negotiation to be tagged. The SCSI II spec says that you probably should not do this for fear of hitting bogus devices. The driver did this in the past for almost two years without any problem, and not doing it causes problems during error recovery to a tag capable device as the number of openings is higher than two and we'll start sending it tagged commands causing "overlapped commands attempted" type errors. The real fix needs to happen in the generic SCSI layer which can limit the number and type of transactions to a device during error recovery efficiently. Give ourselves at least 100ms to perform a request sense instead of relying on the original timeout to be long enough to complete this new command as well as the one that generated the condition. Removed some redundant code. |
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| etc | ||
| games | ||
| gnu | ||
| include | ||
| lib | ||
| libexec | ||
| lkm | ||
| release | ||
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| COPYRIGHT | ||
| Makefile | ||
| README | ||
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. Please see the top of the Makefile for more information on the standard build targets and compile-time flags. Building a kernel with config(8) is a somewhat more involved process, documentation for which can be found at: http://www.freebsd.org/handbook/kernelconfig.html And in the config(8) man page. The sample kernel configuration files reside in the sys/i386/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 LINT contains entries for all possible devices, not just those commonly used, and is meant more as a general reference than an actual kernel configuration file (a kernel built from it wouldn't even run). Source Roadmap: --------------- bin System/User commands. contrib Packages contributed by 3rd parties. eBones Kerberos package - NOT FOR EXPORT! 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. lib System libraries. libexec System daemons. lkm Loadable Kernel Modules. release Release building Makefile & associated tools. sbin System commands. secure DES and DES-related utilities - NOT FOR EXPORT! 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/handbook/synching.html