FreeBSD src
455489fdab
aic7xxx_pci.c: Enable board generation of interrupts only once our handler is in place and all other setup has occurred. aic7xxx.c: More conversion of data types to ahc_* names. tmode_tstate and tmode_lstate are the latest victims. Clean up the check condition path by branching early rather than indenting a giant block of code. Add support for target mode initiated sync negotiation. The code has been tested by forcing the feature on for all devices, but for the moment is left inaccesible until a decent mechanism for controlling the behavior is complete. Implementing this feature required the removal of the old "target message request" mechanism. The old method required setting one of the 16 bit fields to initiate negotiation with a particular target. This had the nice effect of being easy to change the request and have it effect the next command. We now set the MK_MESSAGE bit on any new command when negotiation is required. When the negotiation is successful, we walk through and clean up the bit on any pending commands. Since we have to walk the commands to reset the SCSI syncrate values so no additional work is required. The only drawback of this approach is that the negotiation is deferred until the next command is queued to the controller. On the plus side, we regain two bytes of sequencer scratch ram and 6 sequencer instructions. When cleaning up a target mode instance, never remove the "master" target mode state object. The master contains all of the saved SEEPROM settings that control things like transfer negotiations. This data will be cloned as the defaults if a target mode instance is re-instantiated. Correct a bug in ahc_set_width(). We neglected to update the pending scbs to reflect the new parameters. Since wide negotiation is almost always followed by sync negotiation it is doubtful that this had any real effect. When in the target role, don't complain about "Target Initiated" negotiation requests when an initiator negotiates with us. Defer enabling board interrupts until after ahc_intr_enable() is called. Pull all info that used to be in ahc_timeout for the FreeBSD OSM into ahc_dump_card_state(). This info should be printed out on all platforms. aic7xxx.h: Add the SCB_AUTO_NEGOITATE scb flag. This allows us to discern the reason the MK_MESSAGE flag is set in the hscb control byte. We only want to clear MK_MESSAGE in ahc_update_pending_scbs() if the MK_MESSAGE was set due to an auto transfer negotiation. Add the auto_negotiate bitfield for each tstate so that behavior can be controlled for each of our enabled SCSI IDs. Use a bus interrupt handler vector in our softc rather than hard coding the PCI interrupt handler. This makes it easier to build the different bus attachments to the aic7xxx driver as modules. aic7xxx.reg: Remove the TARGET_MSG_REQUEST definition for sequencer ram. aic7xxx.seq: Fix a few target mode bugs: o If MK_MESSAGE is set in an SCB, transition to message in phase and notify the kernel so that message delivery can occur. This is currently only used for target mode initiated transfer negotiation. o Allow a continue target I/O to compile without executing a status phase or disconnecting. If we have not been granted the disconnect privledge but this transfer is larger than MAXPHYS, it may take several CTIOs to get the job done. Remove the tests of the TARGET_MSG_REQUEST field in scratch ram. aic7xxx_freebsd.c: Add support for CTIOs that don't disconnect. We now defer the clearing of our pending target state until we see a CTIO for that device that has completed sucessfully. Be sure to return early if we are in a target only role and see an initiator only CCB type in our action routine. If a CTIO has the CAM_DIS_DISCONNECT flag set, propogate this flag to the SCB. This flag has no effect if we've been asked to deliver status as well. We will complete the command and release the bus in that case. Handle the new auto_negotiate field in the tstate correctly. Make sure that SCBs for "immediate" (i.e. to continue a non disconnected transaction) CTIO requests get a proper mapping in the SCB lookup table. Without this, we'll complain when the transaction completes. Update ahc_timeout() to reflect the changes to ahc_dump_card_state(). aic7xxx_inline.h: Use ahc->bus_intr rather than ahc_pci_intr. |
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| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| kerberosIV | ||
| lib | ||
| libexec | ||
| release | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.upgrade | ||
| 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 ``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/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 have to build world before. More information is available in the handbook. 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 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. 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. kerberosIV Kerberos package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. 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/handbook/synching.html