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idescsi_pc_intr() uses local_irq_enable() in IRQ context: annotate it.
(this has no effect on kernels with lockdep disabled. On kernels with lockdep
enabled this means that we wont actually disable interrupts, and the warning
message will go away as well.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The callers of scsi_send_eh_cmnd are setting the cmnd buffer,
and then scsi_send_eh_cmnd is copying that updated buffer to
the old_cmnd variable. Then after the command runs, we end up
copying that old_cmnd var which has the new cmnd to the scsi
command buffer. When this command gets recent, all types of fun
things happen like getting TUR or START_STOP commands with
data and scatterlists.
This patch made against scsi-rc-fixes, has the callers of
scsi_send_eh_cmnd pass in the command so scsi_send_eh_cmnd
can do the right thing. This should go into 2.6.18 since this
fixes a regression added when we removed some of the scsi_cmnd
fields and replaced them with local variables.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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Software must explicitely re-enable extended firmware tracing
after any ISP abort condition.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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Original code attempts to retry PLOGIs to fcports that are
FCP_TARGETs only. If the driver never performed a successful
PLOGI/PRLI, the port-type would never be assigned, and the
relogin logic would silently drop the request (and thus the port
would not be recognized and registered).
The fix is relatively straightforward, drop the FCP_TARGET-only
check.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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There's a problem where sg is executing a ->nopage operation on a
compound page, it actually calls get_page() on the first page in the
compound rather than the page which is being mapped. The fix is to
select the correct page by indexing into the compound.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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gregkh@master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
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vt6420 has super-fragile SCR registers which can hang the whole
machine if accessed with the wrong timings. This patch makes sata_via
use SCR registers only during probing and with the same timings as
before (pre new EH), which is proven to work.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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This patch implements force_pcs module parameter for ata_piix. If 1,
PCS is ignored, 2 honored. As there seem to be quite a few ICHs w/
impaired PCS, this option will be useful for cases where the default
setting doesn't work.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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There have been a number of reports regarding some ICH5s failing to
detect devices since the PCS handling update. Analysis shows that
these problems are caused by bogus PCS values from those controllers.
Before the PCS update, the driver didn't honor PCS regs exactly and
probed them in many cases PCS reports no device. Now that PCS is
honored exactly, these hardware problems are visible.
This patch makes ICH5 ignore PCS.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Noted by Alexey Dobriyan.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move out PCS handling from piix_sata_prereset() into
piix_sata_present_mask() and use it from newly implemented
piix_sata_softreset(). Class codes for devices which are indicated to
be absent by PCS are cleared to ATA_DEV_NONE. This fixes ghost device
problem reported on ICH6 and 7.
This patch moves PCS handling from prereset to softreset, which makes
two behavior changes.
* perform softreset even when PCS indicates no device
* PCS handling is repeated before retrying softresets due to reset
failures.
Both behavior changes are intended and more consistent with how other
drivers behave.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Change version number to 8.1.9
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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Stall error handler if attempting resets/aborts while an rport is blocked.
This avoids device offline scenarios due to errors in the error handler.
Background:
Although the transport is using the scsi_timed_out functionality to
restart the timeout if the rport is blocked, if the timeout has already
fired before the block occurs, the eh handler still runs and can take
the device offline. Ultimately, this window cannot be resolved without
significant work in the error handler thread. Christoph noted the first
level of these issues when he noted the poor error response handling
by the error thread.
We found, under heavy load and error testing, that time window from when
the scsi_times_out() adds the io to the queue to when the scsi_error_handler
gets around to servicing it, can be in the several seconds range. In most
cases, these test conditions are highly unusual, but possible.
As a result, we're stalling the error handler in this race window so that
we can avoid the device_offline transitions.
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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Misc Bug Fixes:
- Cap MBX_DOWN_LINK command timeout to 60 seconds
- Fix double free of ndlp object
- Don't free mbox structures on error. The completion handlers expect to do so.
- Clear host attention work items when going offline
- Fixed discovery issues in multi-initiator environments.
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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Hi,
Reading the Intel VSC and AHCI it seems like writing 0x302 is incorrect.
The only valid values are 4, 1 and 0. Writing 4 disables the
PHY.
Signed-off-by: Martin Hicks <mort@bork.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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git://htj.dyndns.org/libata-tj into upstream
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pdc_adma was overlooked and broken by the irq-pio patch:
Only HSM_ST_LAST interrupts should be delivered to this LLDD.
Adding ATA_FLAG_PIO_POLLING to pdc_adma fixes the problem (temporarily),
before we convert the irq handler of pdc_adma to handle all interrupts.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Replace pci_module_init() with pci_register_driver().
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Tejun Heo <htejun@gmail.com>
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Kill unused probe_ent/ap->hard_port_no and probe_ent->legacy_mode.
Signed-off-by: Tejun Heo <htejun@gmail.com>
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Replace ap->hard_port_no with ap->port_no.
Signed-off-by: Tejun Heo <htejun@gmail.com>
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Use dummy port for stolen legacy ports. This makes ap->port_no always
equal ap->hard_port_no.
Signed-off-by: Tejun Heo <htejun@gmail.com>
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Implement dummy port which can be requested by setting appropriate bit
in probe_ent->dummy_port_mask. The dummy port is used as placeholder
for stolen legacy port. This allows libata to guarantee that
index_of(ap) == ap->port_no == actual_device_port_no, and thus to
remove error-prone ap->hard_port_no.
As it's used only when one port of a legacy controller is reserved by
some other entity (e.g. IDE), the focus is on keeping the added *code*
complexity at minimum, so dummy port allocates all libata core
resources and acts as a normal port. It just has all dummy port_ops.
This patch only implements dummy port. The following patch will make
libata use it for stolen legacy ports.
Signed-off-by: Tejun Heo <htejun@gmail.com>
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Kill host_set->next
Fix simplex support
Allow per platform setting of IDE legacy bases
Some of this can be tidied further later on, in particular all the
legacy port gunge belongs as a PCI quirk/PCI header decode to understand
the special legacy IDE rules in the PCI spec.
Longer term Jeff also wants to move the request_irq/free_irq out of core
which will make this even cleaner.
tj: folded in three followup patches - ata_piix-fix, broken-arch-fix
and fix-new-legacy-handling, and separated per-dev xfermask into
separate patch preceding this one. Folded in fixes are...
* ata_piix-fix: fix build failure due to host_set->next removal
* broken-arch-fix: add missing include/asm-*/libata-portmap.h
* fix-new-legacy-handling:
* In ata_pci_init_legacy_port(), probe_num was incorrectly
incremented during initialization of the secondary port and
probe_ent->n_ports was incorrectly fixed to 1.
* Both legacy ports ended up having the same hard_port_no.
* When printing port information, both legacy ports printed
the first irq.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tejun Heo <htejun@gmail.com>
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Implement per-dev xfermask. libata used to determine xfermask
per-port - the fastest mode of the slowest device on the port. This
patch enables per-dev xfermask.
Original patch is from Alan Cox <alan@redhat.com>. The following
changes are made by me.
* simplex warning message is added
* remove disabled device handling code which is never invoked
(originally for choosing port-wide lowest PIO mode)
Cc: Alan Cox <alan@redhat.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
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Eliminate redundant loop variable 'count'
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Tejun Heo <htejun@gmail.com>
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s/ata_host_add/ata_port_add/
s/ata_host_init/ata_port_init/
libata naming got stuck in the middle of a Great Renaming:
ata_host -> ata_port
ata_host_set -> ata_host
To eliminate confusion, let's just give up for now, and simply ensure
that things are internally consistent.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Tejun Heo <htejun@gmail.com>
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Update ata_host_init() such that it only initializes SCSI host related
stuff and doesn't call into ata_port_init(), and rename it to
ata_port_init_shost().
Signed-off-by: Tejun Heo <htejun@gmail.com>
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SCSI EH locks door if sdev->locked is set. Sometimes door lock
command fails continuously (e.g. when medium is not present) and as
libata uses EH to acquire sense data, this easily creates a loop where
a failed lock door invokes EH and EH issues lock door on completion.
This patch clears sdev->locked on door lock failure to break this
loop. This problem has been spotted and diagnosed by Unicorn Chang
<uchang@tw.ibm.com>.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Fix a sata debug print statement that still uses an old variable name.
Signed-off-by: Keith Owens <kaos@ocs.com.au>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Initial IRQ mask clearing is done by libata-core by freezing all ports
prior to requesting IRQ. Remove redundant IRQ clearing from
init_controller().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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The following patch enhances libata to allow SAS device drivers
to utilize libata to talk to SATA devices. It introduces some
new APIs which allow libata to be used without allocating a
virtual scsi host.
New APIs:
ata_sas_port_alloc - Allocate an ata_port
ata_sas_port_init - Initialize an ata_port (probe device, etc)
ata_sas_port_destroy - Free an ata_port allocated by ata_sas_port_alloc
ata_sas_slave_configure - configure scsi device
ata_sas_queuecmd - queue a scsi command, similar to ata_scsi_queuecomand
These new APIs can be used either directly by a SAS LLDD or could be used
by the SAS transport class.
Possible usage for a SAS LLDD would be:
scsi_scan_host
target_alloc
ata_sas_port_alloc
slave_alloc
ata_sas_port_init
slave_configure
ata_sas_slave_configure
Commands received by the LLDD for SATA devices would call ata_sas_queuecmd.
Device teardown would occur with:
slave_destroy
port_disable
target_destroy
ata_sas_port_destroy
Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Move ata_probe_ent_alloc to libata-core. It will also be used by
future SAS/SATA integration patches.
Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Separate out the ata_port initialization from ata_host_init
so that it can be used in future SAS patches.
Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Add ata_host_set_init in preparation for SAS attached SATA.
Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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SCSI folk forgot to fix up all the uses of 'buffer' before deleting
this struct member. Do it for them to rescue the resulting build
failures.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The NCR5380-based SCSI cards need the SCSI SPI transport selected
to build correctly.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The hptiop just got merged with a horrible amount of really bad ioctl
code that is against the standards for new scsi drivers. This patch
backs it out (and fixes a small bug where scsi_add_host is called to
early). We can re-add proper APIs once we agree on them.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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Conflicts:
arch/ia64/hp/sim/simscsi.c
Stylistic differences in two separate fixes for buffer->request_buffer
problem.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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