Date: Fri, 31 Mar 2000 16:35:20 -0800 (PST) From: Mike Smith <msmith@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/amr amr.c amr_disk.c amr_pci.c amrvar.h Message-ID: <200004010035.QAA60646@freefall.freebsd.org>
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msmith 2000/03/31 16:35:18 PST
Modified files:
sys/dev/amr amr.c amr_disk.c amr_pci.c amrvar.h
Log:
Update to latest working version.
- Add periodic status monitoring routine. Currently just detects
lost commands, further functionality pending data from AMI.
Add some new commands states; WEDGED (never coming back) and
LATE (for when a command that wasmarked as WEDGED comes bacj,
- Remove a number of redundant efforts to poll the card for completed
commands. This is what interrupt handlers are for.
- Limit the maximum number of outstanding I/O transactions. It seems
that some controllers report more than they can really handle,
and exceding this limit can cause the controller to lock up.
- Don't use 'wait' mode for anything where the controller might not
be able to generate interrupts. (Keep the 'wait' mode though sa it
will become useful when we start taking userspace commands.
- Use a similar atomic locking trategy to the Mylex driver to prevent
some reentrancy problems.
- Correctly calculate the block count for non-whoile-bloch transfers
(actually illegal).
- Use the dsik device's si_drv1 field instead of b_driver1 in the
buf struct to pass the driver identifier arond.
- Rewrite amr_start and amr_done() along the lines of the Mylex driver
in order to improve robustnes.
- Always force the PCI busmaster bit on.
Revision Changes Path
1.10 +188 -71 src/sys/dev/amr/amr.c
1.6 +24 -27 src/sys/dev/amr/amr_disk.c
1.2 +8 -1 src/sys/dev/amr/amr_pci.c
1.4 +32 -1 src/sys/dev/amr/amrvar.h
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