most cases, use a proper constructor. For proplib, give a local
equivalent of POOL_INIT for the kernel object implementation. This
way the code structure can be preserved, and a local link set is
not hazardous anyway (unless proplib is split to several modules,
but that'll be the day).
tested by booting a kernel in qemu and compile-testing i386/ALL
Reset ch_status and ch_error at the beginning of any operation.
The chip only writes the RDH FIS to the SRAM when the error bit is
set in a RDH FIS (per the datasheet). Thus, satafis_sdb_parse() is
replaced with satafis_rhd_parse(). A valid FIS type field seems to
not be written to the SRAM, so don't bother checking it for the
correct magic.
Additionally, append 2009 to copyright year set, and remove
obsolete CVS Id lines from when this was in my repository.
While here, renumber some __reserved member names to be sequential.
Also, add a member for the World Wide Name.
Use atap_max_lba in wd.c instead of offsets into a __reserved member.
side-effect of registering them, config_detach(9) cleared DVF_ACTIVE
before it called wddetach() or sddetach(). Even though sd(4)'s
detachment may have subsequently failed with EBUSY, we could not
begin new disk I/O on sd(4) because the device had been deactivated.
By analogy to sdstrategy(), test device_is_active() in wdstrategy()
and if it is false set b_errno to EIO instead of initiating new
disk I/O.
XXX We should decline more politely to start new I/O, since
XXX !device_is_active() may mean simply that the device is suspended.
XXX I suppose that EIO is safe as long as system suspension is
XXX all-or-nothing.
instead. If the detach is forced, do what wdclose() does on the
last close: flush the cache, clear the flag WDF_LOADED, and delete
our reference to the ATA bus device.
drives flagged DRIVE_ATAPI in atabus_activate(,DVACT_DEACTIVATE) just as
we skip them in atabus_detach() and in atabus_childdetched().
Make atabus_detach() parallel attachment more closely by calling
config_detach() on the child chp->ata_drives[i] instead of on
chp->ch_drive[i].drv_softc. Assert that ata_drives[i] and
ch_drive[i].drv_softc are equal, and set them both to NULL in
atabus_childdetached().
Call the detach routine for every device in the device tree, starting
with the leaves and moving toward the root, expecting that each
(pseudo-)device driver will use the opportunity to gracefully commit
outstandings transactions to the underlying (pseudo-)device and to
relinquish control of the hardware to the system BIOS.
Detaching devices is not suitable for every shutdown: in an emergency,
or if the system state is inconsistent, we should resort to a fast,
simple shutdown that uses only the pmf(9) shutdown hooks and the
(deprecated) shutdownhooks. For now, if the flag RB_NOSYNC is set in
boothowto, opt for the fast, simple shutdown.
Add a device flag, DVF_DETACH_SHUTDOWN, that indicates by its presence
that it is safe to detach a device during shutdown. Introduce macros
CFATTACH_DECL3() and CFATTACH_DECL3_NEW() for creating autoconf
attachments with default device flags. Add DVF_DETACH_SHUTDOWN
to configuration attachments for atabus(4), atw(4) at cardbus(4),
cardbus(4), cardslot(4), com(4) at isa(4), elanpar(4), elanpex(4),
elansc(4), gpio(4), npx(4) at isa(4), nsphyter(4), pci(4), pcib(4),
pcmcia(4), ppb(4), sip(4), wd(4), and wdc(4) at isa(4).
Add a device-detachment "reason" flag, DETACH_SHUTDOWN, that tells the
autoconf code and a device driver that the reason for detachment is
system shutdown.
Add a sysctl, kern.detachall, that tells the system to try to detach
every device at shutdown, regardless of any device's DVF_DETACH_SHUTDOWN
flag. The default for kern.detachall is 0. SET IT TO 1, PLEASE, TO
HELP TEST AND DEBUG DEVICE DETACHMENT AT SHUTDOWN.
This is a work in progress. In future work, I aim to treat
pseudo-devices more thoroughly, and to gracefully tear down a stack of
(pseudo-)disk drivers and filesystems, including cgd(4), vnd(4), and
raid(4) instances at shutdown.
Also commit some changes that are not easily untangled from the rest:
(1) begin to simplify device_t locking: rename struct pmf_private to
device_lock, and incorporate device_lock into struct device.
(2) #include <sys/device.h> in sys/pmf.h in order to get some
definitions that it needs. Stop unnecessarily #including <sys/device.h>
in sys/arch/x86/include/pic.h to keep the amd64, xen, and i386 releases
building.
LBA 48 work around. The first entry will watch the Seagate ST3160815AS
(and similar models), the second one HP's OEM version of the same drive.
This avoids the RAID rebuild problems described in PR kern/40569.
shutting down -- this is only supposed to happen from the pcmcia
kernel thread while the system is running
-in wd_shutdown, call ata_addref first, so that the adapter is either
active or we know that it isn't
This fixes a hang on shutdown-p reported by Dennis den Brok per
PR kern/40531. Verified by by Dennis and me.
(reported against 5.0-Beta, so this is a pullup candidate)
we can't use it here. Rssurect ATACH_TH_RUN, backing out
src/sys/dev/ata/ata.c 1.101
src/sys/dev/ata/ata_wdc.c 1.90
src/sys/dev/ata/atavar.h 1.77
src/sys/dev/ic/wdc.c 1.255
src/sys/dev/scsipi/atapi_wdc.c 1.108
Should fix kern/39927 and kern/39725.
its not on a free list.
Also change buf_init() to not automatically mark buffers `busy' since this
only makes sense for bufcache buffers.
Mark all buf_init'd buffers 'busy' on the places where they ought to be
flagged as such to not confuse the buffer cache.
Fixes PR 38923.
dyoung