freebsd-dev/sys/dev/buslogic
Scott Long c68534f1d5 Update PCI drivers to no longer look at the MEMIO-enabled bit in the PCI
command register.  The lazy BAR allocation code in FreeBSD sometimes
disables this bit when it detects a range conflict, and will re-enable
it on demand when a driver allocates the BAR.  Thus, the bit is no longer
a reliable indication of capability, and should not be checked.  This
results in the elimination of a lot of code from drivers, and also gives
the opportunity to simplify a lot of drivers to use a helper API to set
the busmaster enable bit.

This changes fixes some recent reports of disk controllers and their
associated drives/enclosures disappearing during boot.

Submitted by:	jhb
Reviewed by:	jfv, marius, achadd, achim
MFC after:	1 day
2013-08-12 23:30:01 +00:00
..
bt_eisa.c Add locking to the bt(4) driver and mark it MPSAFE. 2012-10-15 16:13:55 +00:00
bt_isa.c Add locking to the bt(4) driver and mark it MPSAFE. 2012-10-15 16:13:55 +00:00
bt_mca.c Add locking to the bt(4) driver and mark it MPSAFE. 2012-10-15 16:13:55 +00:00
bt_pci.c Update PCI drivers to no longer look at the MEMIO-enabled bit in the PCI 2013-08-12 23:30:01 +00:00
bt.c Reform the busdma API so that new types may be added without modifying 2013-02-12 16:57:20 +00:00
btreg.h Add locking to the bt(4) driver and mark it MPSAFE. 2012-10-15 16:13:55 +00:00