John Baldwin 06e8730c59 Add locking to the twe(4) driver and make it MPSAFE: ... - Add per-controller configuration (sx) and I/O (mutex) locks. The configuration lock protects the relationship of volumes and drives while the I/O lock protects access to the controller's registers and the main I/O path. - Remove some checks for M_WAITOK malloc()'s failing. - Remove the explicit bus space tag/handle from the softc and use bus_*() rather than bus_space_*(). - Reuse the existing new-bus sysctl context instead of creating a new one. - Remove compat shims for FreeBSD 4.x. - Use pci_enable_busmaster() rather than doing it by hand, and rely on bus_alloc_resource() to enable PCI I/O decoding. Tested by: Mike Tancsa mike sentex net Reviewed by: scottl (partially) MFC after: 1 month		2012-08-13 21:29:34 +00:00
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twe_compat.h	Add locking to the twe(4) driver and make it MPSAFE:	2012-08-13 21:29:34 +00:00
twe_freebsd.c	Add locking to the twe(4) driver and make it MPSAFE:	2012-08-13 21:29:34 +00:00
twe_tables.h
twe.c	Add locking to the twe(4) driver and make it MPSAFE:	2012-08-13 21:29:34 +00:00
tweio.h
twereg.h
twevar.h	Add locking to the twe(4) driver and make it MPSAFE:	2012-08-13 21:29:34 +00:00