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patches taken from jtk's dosemu for NetBSD 1.1 and updated for
the current driver. Some of the code is based an older FreeBSD
version of the driver.
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speaker upgraded to the current.
some changes to the VM stuff (ie kern_thread.c added and so).
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the device interrupt chain structures (isa, pci)
Move interrupt chain structure definition to <machine/psl.h> so vmstat can
get at it (i386)
Remove hack to count interrupts the old way (i386)
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Balance calls to disk_busy() and disk_unbusy() properly to avoid
dk_busy < 0 panics. Count seeks.
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New generic disk framework. Highlights:
New metrics handling. Metrics are now kept in the new `struct disk'.
Busy time is now stored as a timeval, and transfer count in bytes.
Storage for disklabels is now dynamically allocated, so that the size
of the disk structure is not machine-dependent.
Several new functions for attaching and detaching disks, and handling
metrics calculation.
Old-style instrumentation is still supported in drivers that did it
before. However, old-style instrumentation is being deprecated, and
will go away once the userland utilities are updated for the new
framework.
For usage and architectural details, see the forthcoming disk(9)
manual page.
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fixed my own pr 1758 -- the floppy drive motor was not being turned off
at halt time, especially if a floppy was mounted. Added a shutdown hook
to turn off the motor. Per a request by mycroft, the cookie from the hook
is saved in a new member I added to the fd_softc structure.
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The IST_* and IPL_* constants are not bus-specific; don't treat them as such.
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