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Update from Bill Studenmund <wrstuden@loki.stanford.edu> with some minor
cleanup from me. Now supports serial console.
Double ring limits from Bill Studenmund <wrstuden@loki.stanford.edu>.
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make netinet work on systems where pointers and longs are 64 bits
(like the alpha). Biggest problem: IP headers were overlayed with
structure which included pointers, and which therefore didn't overlay
properly on 64-bit machines. Solution: instead of threading pointers
through IP header overlays, add a "queue element" structure to do
the threading, and point it at the ip headers.
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Don't use the softc at probe time on pci devices because it has not been
allocated yet
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Add support for the 3c59x (pci) cards in the 3c5x9 driver. In addition
add the necessary bits for the 3c589 (pcmcia) card without adding any
of the pcmcia framework.
Also call epstop() in the attach routine to make sure that the pci card
gets reset properly.
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Make it work on little-endian monochrome buffers; per Ted.
Must change `u_long' to `u_int32_t' as Jason pointed out.
since 'long's in this code are meant to be exactly 32-bits wide, use
'int32_t's instead, so that this code is usable on the alpha.
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Bring in several changes from the ccd:
* Be a bit better with prototypes
* Use struct dkdevice in vnd_softc.
* Prevent the unit from being unconfigured while open.
* Implement a simple locking mechanism and use it for sanity's
sake.
Still needs more work; needs to support disklabels and the like.
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Fix a race condition where if a process is asleep waiting on an
exclusive lock of a ccd device while another process is unconfiguring
that same device, the first process would never awaken (unless interrupted).
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If the read or write request can fit into a 6-byte cdb, then
use a 6-byte cdb, otherwise use the 10-byte as before.
In sdattach(), make a note if the device is "ancient" (i.e.
inqbuf.version & SID_ANSII == 0).
Implement sdminphys(): if the device is "ancient", shorten the
transfer so it will fit into a 6-byte cdb.
In sdminphys(), add a comment about the semantics of the "length" field
in a 6-byte read/write cdb (namely, length == 0 really means 256), and
that we handle this conservatively by limiting the transfer to 255 blocks.
*sigh* One just never knows how a pre-scsi-1 device is going to behave.
Remove a couple of now unneeded assignments.
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If the read or write request can fit into a 6-byte cdb, then
use a 6-byte cdb, otherwise use the 10-byte as before.
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add a bunch of rogues
Trim NULs, in addition to spaces, in scsi_strvis().
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Only expect vm_fork() to return if __FORK_BRAINDAMAGE is defined.
Use splstatclock() rather than splhigh() in one place.
Eliminate unused third arg to vm_fork().
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Extend use of vm_object_prefer() to vm_allocate_with_pager().
Make vm_object_prefer() call MD aligner for "pageless" objects too,
so we can have more control over the virtual address to be used.
Implementation could be simpler if we by-pass the object to mapped, but
we'd loose the ability to adapt alignment to objects that were previously
mmap'ed with MAP_FIXED on.
Only expect vm_fork() to return if __FORK_BRAINDAMAGE is defined.
Eliminate unused third arg to vm_fork().
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