Because of some quirk in the SCSI spec the aic79xx driver chose to
force a renegotiation when sending an inquiry. This should better
be handled by the upper layers if required at all.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch fixes the aic79xx driver to properly respond to BIOS
settings.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
On certain systems the driver seems to hit upon some
"scsi0: Invalid Sequencer interrupt occurred." problem and dumps card state.
According to Adaptec engineers this message is harmless. So as not to
confuse user we can as well disable the internal card state dump and
just print out the message itself.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch updates the error recovery. Routines for TARGET RESET
and ABORT COMMAND are split up as the logic is quite dissimilar.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch converts aic79xx to use the midlayer-supplied tcq
functions.
We also set the queuedepth to '1' if tcq is disabled; the
aic79xx driver gets confused otherwise. Will set it back to
'2' once I figure out how to queue requests in the driver.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch removes the need for platform_data->qfrozen.
We're now using complete() instead of semaphores thus
simplifying ahd_freeze_simq() quite a lot.
This also fixes some deadlocks in the recovery code (again).
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Two misc fixes:
- Fix deadlock caused by return with host_lock held in lpfc_findnode_did
- Initialize all fields of the allocated mail box structure to zero.
Was causing some sysfs mailbox commands to fail immediately after load.
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Introduce lpfc_reset_barrier() function for resets on dual channel adapters
Workaround for a hardware errata on dual channel asics. There is a
potential for the chip to lock up on a reset if a shared dma engine is in
use. The (ugly) work around requires a reset process which uses a mailbox
command to synchronize the independent channels prior to the reset to
avoid the issue. Unfortunately, the timing windows required to ensure this
workaround succeeds are very specific, meaning we can't release the cpu
during the barrier.
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Fixed a timer panic due to timer firing after freeing ndlp
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Fixed RSCN handling when a PLOGI is in retry.
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Fix Discovery processing for NPorts that change their NPortId on the fly
due to a cable swap.
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Turn on AHCI_CMD_PREFETCH for PACKET commands. This hints the
controller that it can prefetch the CDB and the PRD entries. This
patch is originally from Jeff Garzik.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
sil24 softreset timeout was > 100ms (100 loops with msleep(1)), which
turned out to be too short for some devices (ASI ARAID99 2000). This
patch converts sil24 softreset waiting loop to use proper timeout
condition and lengthen the timeout to ATA_TMOUT_BOOT secs and check
interval to 100ms. Chisato Yamauchi discovered the problem and
supplied initial patch.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Chisato Yamauchi <cyamauch@plamo.linet.gr.jp>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
sata_sil24 softreset routine used to check sata_dev_present() after
SRST is complete in the hope that SRST may do some good even when
SStatus reports no device. This is okay as long as SRST timeout is
short (> 100ms in the current code) but it seems that not all SATA
devices are happy with short SRST timeout.
This patch makes softreset exit early without performing actual SRST
if SStatus reports no device in preparation for lengthening SRST
timeout.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Fix NULL pointer dereference detected by the Coverity checker. Kill
dev -> pdev -> dev conversion while at it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ata_bus_probe() didn't initialize classes[] properly with
ATA_DEV_UNKNOWN. As ->probe_reset() is allowed to leave @classes
alone when no device is present, this results in garbage class values.
ATM, the only affected driver is ata_piix.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Preceding xfer_mask changes make the following functions unused.
ata_pio_modes(), base_from_shift(), ata_pr_blacklisted(), fgb()
Kill them. Also, as xfer_mode_str[] is now only used by
ata_mode_string(), move it into the function.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Use xfer_mask helpers to determine transfer mode. This rewrite also
makes transfer mode determination done before any actual
configuration. This patch doesn't result in any functional changes.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Replace quick & dirty max transfer mode determination in
ata_dev_configure() with ata_id_xfermask(). While at it, rename
xfer_modes variable to xfer_mask and make it unsigned int for
consistency.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add ata_pack_xfermask(), ata_xfer_mask2mode(), ata_xfer_mode2mask(),
ata_xfer_mode2shift() and ata_id_xfermask(). These functions will be
used by following patches to simplify xfer_mask handling.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add ATA_BITS_*, ATA_MASK_* macros and reorder xfer_mask fields such
that higher transfer mode is placed at higher order bit. As thie
reordering breaks ata_mode_string(), this patch also rewrites
ata_mode_string().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Make pio_task and atapi_packet_task use port_task.
atapi_packet_task() is moved upward such that it's right after
ata_pio_task(). This position is more natural and makes adding
prototype for ata_qc_issue_prot() unnecessary.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Implement port_task. LLDD's can schedule a function to be executed
with context after specified delay. libata core takes care of
synchronization against EH. This is generalized form of pio_task and
packet_task which are tied to PIO hsm implementation.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
In the past I added an host attribute but unfortunately
I forgot to increase FC_HOST_NUM_ATTRS.
This is fixed with the patch. Otherwise an fibre channel
lld might run into
BUG_ON(count > FC_HOST_NUM_ATTRS);
in fc_attach_transport().
Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The patch
[SCSI] SCSI core kmalloc2kzalloc
Has an incorrect piece in sr_ioctl.c; it changes buffer from kmalloc
to kzalloc, but then removes the clearing of the stack variable struct
packet_command. This, in turn leaves rubbish in the sense pointer
which the sr_do_ioctl() command then happily writes to ... oops.
Thanks to Mike Christie <michaelc@cs.wisc.edu> for spotting this.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
On 02/07/2006 04:12:55 AM, Christoph Hellwig wrote:
> On Mon, Feb 06, 2006 at 08:02:21PM -0500, Willem Riede wrote:
>
> > But I will certainly help retire scsi_request. And anything else that is
> > needed to keep up with proper kernel style. Let me know what those are, if
> > you would? I'll start looking at how st has changed, and will be back with
> > any questions I may have.
>
> right now the above is the most urgent bit. What would be nice but not
> required is a conversion to the sense handling helpers, similar to what
> st got (aka using the *normalize_sense functions and then dealing with the
> parsed sense buffer instead of the raw sense data)
Ok, so here is my first take at satisfying this request.
Be warned, that beyond compiling, and checking that the new module
doesn't immediately blow up, there hasn't yet been a lot of testing.
But this should allow you to comment on the changes, and move forward
with dropping scsi_request from the kernel code.
Signed-off-by: Willem Riede <osst@riede.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The SCSI layer uses SCSI_SENSE_BUFFERSIZE (96) for the sense buffer
size, even though some other code uses "sizeof(struct request_sense)"
(which is 64 bytes). Allocate the buffer using the bigger of the two
for safety.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix polling mode panic
Cause: Race between interrupt driven and polling path in harvesting iocbs
from
the response ring.
Signed-off-by: Jamie Wellnitz <Jamie.Wellnitz@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Alexey Dobriyan