Add new driver for Brocade Hardware
Signed-off-by: NJing Huang <huangj@brocade.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Add missing kernel-doc notation in scsi_transport_fc.c:

Warning(drivers/scsi/scsi_transport_fc.c:3593): No description found for parameter 'q'
Warning(drivers/scsi/scsi_transport_fc.c:3700): No description found for parameter 'q'
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Add support for 32-byte READ/WRITE as well as DIF Type 2 protection.

Reject protected 10/12/16 byte READ/WRITE commands when Type 2 is
enabled.

Verify Type 2 reference tag according to Expected Initial LBA in 32-byte
CDB.
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Acked-by: NDouglas Gilbert <dgilbert@interlog.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Disks formatted with DIF Type 2 reject READ/WRITE 6/10/12/16 commands
when protection is enabled.  Only the 32-byte variants are supported.

Implement support for issusing 32-byte READ/WRITE and enable Type 2
drives in the protection type detection logic.
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

We would leak a scsi_data_buffer if the free_list command was of the
protected variety.
Reported-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

So far we have only issued DIF commands if CONFIG_BLK_DEV_INTEGRITY is
enabled.  However, communication between initiator and target should be
independent of protection information DMA.  There are DIF-only host
adapters coming out that will be able to take advantage of this.

Move the relevant DIF bits to sd.c.
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

The checksum format is orthogonal to whether the protection information
is being passed on beyond the HBA or not.  It is perfectly valid to use
a non-T10 CRC with WRITE_STRIP and READ_INSERT.

Consequently it no longer makes sense to explicitly refer to the
conversion in the protection operation.  Update sd_dif and lpfc
accordingly.
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Acked-by: NIhab Hamadi <Ihab.Hamadi@Emulex.Com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

A target reset when I/O is ongoing might result
an eventual device offline, as scsi_eh_completed_normally()
might return ADD_TO_MLQUEUE in addition to the
advertised SUCCESS, FAILED, and NEEDS_RETRY.

Which is unfortunate as scsi_send_eh_cmnd() will
therefore map ADD_TO_MLQUEUE to FAILED instead of
the more appropriate NEEDS_RETRY.
Signed-off-by: NHannes Reinecke <hare@suse.de>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Running sg_luns on s390x with CONFIG_DEBUG_PAGEALLOC enabled fails
with EFAULT from the SG_IO ioctl. The EFAULT is the result from
copy_to_user failing in this call chain:

sg_ioctl
sg_new_read
sg_finish_rem_req
blk_rq_unmap_user
__blk_rq_unmap_user
bio_uncopy_user
__bio_copy_iov
copy_to_user

The sg driver calls sg_remove_scat to free the memory pages before
calling blk_rq_unmap_user that tries to copy the data back to
userspace. Change the order to first call blk_rq_unmap_user before
freeing the pages in sg_remove_scat.
Acked-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: stable@kernel.org
Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: NDouglas Gilbert <dgilbert@interlog.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

On certain cases, UDF disc doesn't report capacity correctly via
READ_CAPACITY but TOC or trackinfo contains valid information which
can be obtained using cdrom_get_last_written().  ide-cd considers both
values and uses the larger one.  Do the same in sr.  This fixes
bko#9668.

 http://bugzilla.kernel.org/show_bug.cgi?id=9668Signed-off-by: NTejun Heo <tj@kernel.org>
Reported-by: NMilan Kocian <milan.kocian@wq.cz>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

5706/5708/5709 devices allow driver/user to set page size. By default it is
set to 4096.  Current drivers do not program this register based on
architecture type (e.g. x86 = 4K, IA64 = 16K) and by choice lets device use
the defaults. So while mapping connection context memory (doorebll registers),
driver has to match page size used by the device. Included change fixes the
issue we uncovered during IA64 testing
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Most code changes were made to support RR44xx adapters.
- add more PCI device ID.
- using PCI BAR[2] to access RR44xx IOP.
- using PCI BAR[0] to check and clear RR44xx IRQ.
Signed-off-by: NHighPoint Linux Team <linux@highpoint-tech.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

The function mode_select_handle_sense returns SCSI_DH_OK even when there is a sense code which is incorrect. Removing it so that it returns SCSI_DH_IO when there is sense that is not handled by this function.
Signed-off-by: NBabu Moger <babu.moger@lsi.com>
Reviewed-by: NVijay Chauhan <vijay.chauhan@lsi.com>
Reviewed-by: NBob Stankey <Robert.stankey@lsi.com>
Reviewed-by: NChandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

1.Changed driver prints to use scmd_printk, sdev_printk
2.Changed dev_err calls to scmd_printk for scsi related print messages
Signed-off-by: NAnil Ravindranath <anil_ravindranath@pmc-sierra.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This is support for Areca SAS/SATA HBA, ARC-1300/1320, which quipped with
88SE6440/88SE9480 respectively.

Signed-off-by: Nick Cheng< nick.cheng@areca.com.tw >
Cc: Ke Wei <kewei.mv@gmail.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

* mark struct vm_area_struct::vm_ops as const
* mark vm_ops in AGP code

But leave TTM code alone, something is fishy there with global vm_ops
being used.
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* remove asm/atomic.h inclusion from kref.h -- not needed, linux/types.h
  is enough for atomic_t
* remove linux/kref.h inclusion from files which do not need it.
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Make all seq_operations structs const, to help mitigate against
revectoring user-triggerable function pointers.

This is derived from the grsecurity patch, although generated from scratch
because it's simpler than extracting the changes from there.
Signed-off-by: NJames Morris <jmorris@namei.org>
Acked-by: NSerge Hallyn <serue@us.ibm.com>
Acked-by: NCasey Schaufler <casey@schaufler-ca.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Signed-off-by: NAnand Gadiyar <gadiyar@ti.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

fix the following 'make includecheck' warning:

  drivers/scsi/ibmvscsi/ibmvscsi.c: asm/firmware.h is included more than once.
Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247067016.4382.78.camel@ht.satnam>
Acked-by: NBrian King <brking@linux.vnet.ibm.com>

fix the following 'make includecheck' warning:

  drivers/scsi/fcoe/libfcoe.c: linux/netdevice.h is included more than once.
Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247066936.4382.76.camel@ht.satnam>

Let attribute group vectors be declared "const".  We'd
like to let most attribute metadata live in read-only
sections... this is a start.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Chris Webb reported:
  p0# uname -a
  Linux f7ea8425-d45b-490f-a738-d181d0df6963.host.elastichosts.com 2.6.30.4-elastic-lon-p #2 SMP PREEMPT Thu Aug 20 14:30:50 BST 2009 x86_64 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz GenuineIntel GNU/Linux
  p0# zgrep SCAN_ASYNC /proc/config.gz
  # CONFIG_SCSI_SCAN_ASYNC is not set

  p0# cat /var/log/kern/2009-08-20
  [...]
  15:27:10.485 kernel: scsi9 : iSCSI Initiator over TCP/IP
  15:27:11.493 kernel: scsi 9:0:0:0: RAID              IET      Controller       0001 PQ: 0 ANSI: 5
  15:27:11.493 kernel: scsi 9:0:0:0: Attached scsi generic sg6 type 12
  15:27:11.495 kernel: scsi 9:0:0:1: Direct-Access     IET      VIRTUAL-DISK     0001 PQ: 0 ANSI: 5
  15:27:11.495 kernel: sd 9:0:0:1: Attached scsi generic sg7 type 0
  15:27:11.495 kernel: sd 9:0:0:1: [sdg] 4194304 512-byte hardware sectors: (2.14 GB/2.00 GiB)
  15:27:11.495 kernel: sd 9:0:0:1: [sdg] Write Protect is off
  15:27:11.495 kernel: sd 9:0:0:1: [sdg] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
  15:27:13.012 kernel: sdg:<6>scsi 9:0:0:1: [sdg] Unhandled error code
  15:27:13.012 kernel: scsi 9:0:0:1: [sdg] Result: hostbyte=0x07 driverbyte=0x00
  15:27:13.012 kernel: end_request: I/O error, dev sdg, sector 0
  15:27:13.012 kernel: Buffer I/O error on device sdg, logical block 0
  15:27:13.012 kernel: ldm_validate_partition_table(): Disk read failed.
  15:27:13.012 kernel: unable to read partition table
  15:27:13.014 kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
  15:27:13.014 kernel: IP: [<ffffffff803f0d77>] disk_part_iter_next+0x74/0xfd
  15:27:13.014 kernel: PGD 82ad0b067 PUD 82cd7e067 PMD 0 
  15:27:13.014 kernel: Oops: 0000 [#1] PREEMPT SMP 
  15:27:13.014 kernel: last sysfs file: /sys/devices/platform/host9/session4/iscsi_session/session4/ifacename
  15:27:13.014 kernel: CPU 5 
  15:27:13.014 kernel: Modules linked in:
  15:27:13.014 kernel: Pid: 13999, comm: async/0 Not tainted 2.6.30.4-elastic-lon-p #2 X7DBN
  15:27:13.014 kernel: RIP: 0010:[<ffffffff803f0d77>]  [<ffffffff803f0d77>] disk_part_iter_next+0x74/0xfd
  15:27:13.014 kernel: RSP: 0018:ffff88066afa3dd0  EFLAGS: 00010246
  15:27:13.014 kernel: RAX: ffff88082b58a000 RBX: ffff88066afa3e00 RCX: 0000000000000000
  15:27:13.014 kernel: RDX: 0000000000000000 RSI: ffff88082b58a000 RDI: 0000000000000000
  15:27:13.014 kernel: RBP: ffff88066afa3df0 R08: ffff88066afa2000 R09: ffff8806a204f000
  15:27:13.014 kernel: R10: 000000fb12c7d274 R11: ffff8806c2bf0628 R12: ffff88066afa3e00
  15:27:13.014 kernel: R13: ffff88082c829a00 R14: 0000000000000000 R15: ffff8806bc50c920
  15:27:13.014 kernel: FS:  0000000000000000(0000) GS:ffff88002818a000(0000) knlGS:0000000000000000
  15:27:13.014 kernel: CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
  15:27:13.014 kernel: CR2: 0000000000000010 CR3: 000000082ade3000 CR4: 00000000000426e0
  15:27:13.014 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  15:27:13.014 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  15:27:13.014 kernel: Process async/0 (pid: 13999, threadinfo ffff88066afa2000, task ffff8806c2bf05e0)
  15:27:13.014 kernel: Stack:
  15:27:13.014 kernel: 0000000000000000 ffff88066afa3e00 ffff88066afa3e00 ffff88082c829a00
  15:27:13.014 kernel: ffff88066afa3e40 ffffffff80306feb ffff88082b58a000 0000000000000000
  15:27:13.014 kernel: 0000000000000001 ffff8806bc50c920 ffff88066afa3e40 ffff88082b58a000
  15:27:13.014 kernel: Call Trace:
  15:27:13.014 kernel: [<ffffffff80306feb>] register_disk+0x122/0x13a
  15:27:13.014 kernel: [<ffffffff803f0b0f>] add_disk+0xaa/0x106
  15:27:13.014 kernel: [<ffffffff80493609>] sd_probe_async+0x198/0x25b
  15:27:13.014 kernel: [<ffffffff80270482>] async_thread+0x10c/0x20d
  15:27:13.014 kernel: [<ffffffff802545ff>] ? default_wake_function+0x0/0xf
  15:27:13.014 kernel: [<ffffffff80270376>] ? async_thread+0x0/0x20d
  15:27:13.014 kernel: [<ffffffff8026ad89>] kthread+0x55/0x80
  15:27:13.014 kernel: [<ffffffff8022be6a>] child_rip+0xa/0x20
  15:27:13.014 kernel: [<ffffffff8026ad34>] ? kthread+0x0/0x80
  15:27:13.014 kernel: [<ffffffff8022be60>] ? child_rip+0x0/0x20
  15:27:13.014 kernel: Code: c8 ff 80 e1 0c b9 00 00 00 00 0f 44 c1 41 83 cd ff 48 8d 7a 20 48 be ff ff ff ff 08 00 00 00 48 b9 00 00 00 00 08 00 00 00 eb 50 <8b> 42 10 41 bd 01 00 00 00 eb db 4c 63 c2 4e 8d 04 c7 4d 8b 20 
  15:27:13.015 kernel: RIP  [<ffffffff803f0d77>] disk_part_iter_next+0x74/0xfd
  15:27:13.015 kernel: RSP <ffff88066afa3dd0>
  15:27:13.015 kernel: CR2: 0000000000000010
  15:27:13.015 kernel: ---[ end trace 6104b56ef5590e25 ]---

The problem is caused because the async scanning split in sd.c doesn't hold
any reference to the device when it kicks off the async piece.  What's
happening is that an iSCSI disconnect is destorying the device again *before*
the async sd scanning thread even starts.  Fix this by taking a reference
before starting the thread and dropping it again when the thread completes.
Reported-by: NChris Webb <chris@arachsys.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch fixes a memory leak in the libsrp function srp_ring_free().
It is not documented whether or not this function should free the ring
pointer itself. But the source code of the callers of this function
(srp_target_alloc() and srp_target_free()) makes it clear that
srp_ring_free() should deallocate the ring pointer itself. Furthermore,
the patch below makes srp_ring_free() deallocate all memory allocated by
srp_ring_alloc().

This patch affects the ibmvstgt driver, which is the only in-tree driver
that calls the srp_ring_free() function (indirectly).
Signed-off-by: NBart Van Assche <bart.vanassche@gmail.com>
Acked-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

bnx2i currently has a check for if a ep is properly bound, so if
iscsi_queuecommand/xmit_task is called while there is no ep
we will not queue IO.

be2iscsi sends IO from queuecommand/xmit_task like how bnx2i does
and needs a similar test. This patch has us just use the suspend_bit
test for this.

When ep_poll has succeeed iscsid will call conn_bind, the LLD will
then call iscsi_conn_bind which will clear the suspend bit.
When ep_disconnect is called (or if there is a conn error) we set
the suspend bit. For the ep_disconnect case I am adding a helper
in this patch that will take the session lock to make sure
iscsi_queuecommand/xmit_task is not running and it will set
the suspend bit.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

beiscsi does not need the iscsi scsi cmd processing. It does not
even get this info on the completion path. This adds a function
to just update the sequencing numbers and complete a task.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Patch to add debugging stuff for rdac device handler.
- Added a bit mask "module parameter" rdac_logging with 2 bits for each type
  of logging.
- currently defined only two types of logging(failover and sense logging). Can
  be enhanced later if required.
- By default only failover logging is enabled which is equivalent of current
  logging.
Signed-off-by: NBabu Moger <babu.moger@lsi.com>
Reviewed-by: NVijay Chauhan <vijay.chauhan@lsi.com>
Reviewed-by: NBob Stankey <Robert.stankey@lsi.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Adding the code to read the debug information during initialization. This
patch collects the information about storage and controllers during
rdac_activate.
Signed-off-by: NBabu Moger <babu.moger@lsi.com>
Reviewed-by: NVijay Chauhan <vijay.chauhan@lsi.com>
Reviewed-by: NBob Stankey <Robert.stankey@lsi.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Moving the initialization code from rdac_activate to rdac_bus_attach which is
more efficient.  We don't have to collect all the information during every
activate.
Signed-off-by: NBabu Moger <babu.moger@lsi.com>
Reviewed-by: NVijay Chauhan <vijay.chauhan@lsi.com>
Reviewed-by: NBob Stankey <Robert.stankey@lsi.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

When the allocation fails in sg_build_indirect(), an oops happens in
the error path. It's caused by an obvious typo.
Signed-off-by: NMichal Schmidt <mschmidt@redhat.com>
Reported-by: NBob Tracy <rct@gherkin.frus.com>
Acked-by: NDouglas Gilbert <dgilbert@interlog.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

These storage arrays can use RDAC when configured with 'linux' as the
initiator.

http://www.sun.com/storage/disk_systems/workgroup/2500/
http://www.sun.com/storage/disk_systems/workgroup/2510/
http://www.sun.com/storage/disk_systems/workgroup/2530/Signed-off-by: NCharlie Brady <charlieb@budge.apana.org.au>
Reviewed-by: NChandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NAnil Ravindranath <anil_ravindranath@pmc-sierra.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NGiridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Original code would inadvertently skip the deferred
fc_remote_port_delete() call for rports hanging off any vport.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NGiridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

* Consolidate vport-count processing.
* Correct vp_idx restrictions during RSCN processing.
* Push topology verification check to qla2x00_do_dpc_all_vps().
* Don't skip vport full-login-lip/lip-reset mailbox handling.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NGiridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Original code would break-out of loop after only one iteration.
Signed-off-by: NLalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NGiridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NGiridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>