CVS commit: [netbsd-8] src/sys/dev/ic

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Sun Mar 18 11:05:27 UTC 2018

Modified Files:
        src/sys/dev/ic [netbsd-8]: ld_nvme.c nvme.c nvmevar.h

Log Message:
Pull up following revision(s) (requested by jdolecek in ticket #641):
        sys/dev/ic/nvme.c: revision 1.34
        sys/dev/ic/nvme.c: revision 1.35
        sys/dev/ic/nvme.c: revision 1.36
        sys/dev/ic/nvme.c: revision 1.37
        sys/dev/ic/ld_nvme.c: revision 1.19
        sys/dev/ic/nvmevar.h: revision 1.15

refactor the locking code around DIOCGCACHE handling to be reusable
for other infrequent commands,it uses single condvar for simplicity,
and uses it both when waiting for ccb or command completion - this
is fine, since usually there will be just one such command qeueued anyway
use this to finally properly implement DIOCCACHESYNC - return only after
the command is confirmed as completed by the controller.

switch handling of passthrough commands to use queue, instead of polling
should fix PR kern/53059 by Frank Kardel

fix passthrough command usage also in nvme_get_number_of_queues(), fixes
memory corruption and possible panic on boot

also remove now duplicate nvme_ccb_put() call from
nvme_get_number_of_queues()


To generate a diff of this commit:
cvs rdiff -u -r1.16.2.1 -r1.16.2.2 src/sys/dev/ic/ld_nvme.c
cvs rdiff -u -r1.30.2.1 -r1.30.2.2 src/sys/dev/ic/nvme.c
cvs rdiff -u -r1.13.6.1 -r1.13.6.2 src/sys/dev/ic/nvmevar.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.