GitHub/exynos8895/android_kernel_samsung_universal8895.git
14 years ago[SCSI] bfa: add debugfs support
Jing Huang [Fri, 9 Jul 2010 03:02:55 +0000 (20:02 -0700)]
[SCSI] bfa: add debugfs support

- Add debugfs support to obtain firmware trace, driver trace
  and read/write to registers.

- debugfs hierarchy:
  /sys/kernel/debug/bfa/host#
   where the host number corresponds to the one under /sys/class/scsi_host/host#

- Following are the new debugfs entries added:
  drvtrc: collect current driver trace
  fwtrc: collect current firmware trace.
  fwsave: collect last saved fw trace as a result of firmware crash.
  regwr: write one word to chip register
  regrd: read one or more words from chip register.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: update driver version string
Jing Huang [Fri, 9 Jul 2010 03:02:31 +0000 (20:02 -0700)]
[SCSI] bfa: update driver version string

Update driver version to 2.2.2.1

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: vport fixes
Jing Huang [Fri, 9 Jul 2010 03:01:49 +0000 (20:01 -0700)]
[SCSI] bfa: vport fixes

This patch fixes 3 bugs in vport create/delete.
1) Replace scsi_add_host() with scsi_add_host_with_dma()
2) Fix rmmod hang when there are vports configured. This is due to a race
condition between the workqueue destroy in pci remove context and the vport
delete works being handled. The fix is to use a counter to track the
vport delete work, so that workqueue destroy will not be called until all
configured vports are deleted from workqueue.
3) Fix rmmmod crash when there are PBC vport configured. PBC is not allowed
to be deleted dynamically. However, if someone try to delete it, it leaves the
vport is wrong state. The fix is to restore the vport back to original state
when the attempt to delete pbc vport delete is failed.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: fix wrong arg to callback
Jing Huang [Fri, 9 Jul 2010 03:01:07 +0000 (20:01 -0700)]
[SCSI] bfa: fix wrong arg to callback

This patch fixes the issue of passing wrong argument to callback function.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: add ioc state checking
Jing Huang [Fri, 9 Jul 2010 03:00:24 +0000 (20:00 -0700)]
[SCSI] bfa: add ioc state checking

This patch adds ioc state checking while enabling a port.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: add description for module parameters
Jing Huang [Fri, 9 Jul 2010 02:59:49 +0000 (19:59 -0700)]
[SCSI] bfa: add description for module parameters

Add description for bfa driver module parameters.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: update to support BOFM
Jing Huang [Fri, 9 Jul 2010 02:59:24 +0000 (19:59 -0700)]
[SCSI] bfa: update to support BOFM

Update bfa driver API and data structure to support BOFM (IBM BladeCenter
Open Fabric Manager).

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: fix possible IO double completion
Jing Huang [Fri, 9 Jul 2010 02:58:45 +0000 (19:58 -0700)]
[SCSI] bfa: fix possible IO double completion

While processing the ioim in callback functions, the ioim is still in io_q.
During this time, if the itnim goes offline, the ioim is requeued from
itnim->io_q into itnim->delay_comp_q although the request is already completed.
This results in requeing the ioim into the callback queue if the ioim is not
freed by the time the ioim is requeued. This results in double completion of
the ioim. To fix this, whenever a response is received from firmware for an
ioim, deque it from io_q and enque to fcpim->comp_q. This will eliminate any
possibility of itnim picking any ioim for which the response is already
received.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: fix link state structure
Jing Huang [Fri, 9 Jul 2010 02:58:01 +0000 (19:58 -0700)]
[SCSI] bfa: fix link state structure

When the FCoE Linkup event is sent to the host, the link_state
(struct bfa_pport_link_s) structure is copied to the RME buf to be sent to
the host. But the size of this structure(164 bytes) is larger than the
reserved RME buffer size(128 byes). The following changes reduce the size
of the structure to be less than RME buffer size(128 bytes):
- Remove the trunk and loop info from link_state structure, because both trunk
  and loop are not supported.
- Combine qos_vc_attr and fcf into an union.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: add dynamic queue selection
Jing Huang [Fri, 9 Jul 2010 02:57:33 +0000 (19:57 -0700)]
[SCSI] bfa: add dynamic queue selection

Add new bfa functionality to support dynamic queue selection (IO redirection).
IO redirection can only be enabled when QoS is disabled.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: fix uf post and rport fcpim state machine
Jing Huang [Fri, 9 Jul 2010 02:55:41 +0000 (19:55 -0700)]
[SCSI] bfa: fix uf post and rport fcpim state machine

BFA UF module did not hold lock when seding uf post buffer message to firmware
causing CPE-Q corruption. Fix is to check present of FCS and if FCS present
hold lock while posting UF buffers.

Handle PRLO with sending acc to it and relogin with rport. Discard fcxp
before any state change.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: fix chip and memory initialization
Jing Huang [Fri, 9 Jul 2010 02:54:39 +0000 (19:54 -0700)]
[SCSI] bfa: fix chip and memory initialization

Clear PSS memory reset that is set as part of power-on-reset (pci reset).
Complete PMM memory reset before BISTR start. Clear EDRAM BISTR start bit
after fixed delay. BISTR DONE bit status is not getting set. Use a fixed
1ms delay for BISTR now. Expose PMM IT memory definitions to host.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: update to support firmware configuation
Jing Huang [Fri, 9 Jul 2010 02:53:40 +0000 (19:53 -0700)]
[SCSI] bfa: update to support firmware configuation

Update related data structures to support firmeare configuration.
Add AEN events related to firmware configuation.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: add PBC port disable handling
Jing Huang [Fri, 9 Jul 2010 02:52:46 +0000 (19:52 -0700)]
[SCSI] bfa: add PBC port disable handling

Add PBC port disable handling in BFA and return the appropriate status from
BFA APIs. In bfa_fcs_lport.c, handle OFFLINE event to avoid BFA_ASSERT.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: fix prli retry issues
Jing Huang [Fri, 9 Jul 2010 02:52:00 +0000 (19:52 -0700)]
[SCSI] bfa: fix prli retry issues

Add a max retry limit for PRLI retries. Max retry limit (5) is same as used
in rport PLOGI. Once the retries are exhausted, invoke rport offline so that
existing logic of rport re-discovery can kick-in. Also fixed a bug in rport.c
where one less retry was happening.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: fix rport speed setting
Jing Huang [Fri, 9 Jul 2010 02:51:28 +0000 (19:51 -0700)]
[SCSI] bfa: fix rport speed setting

When a rport goes offline, its speed setting was not reset. Subsequently, if
the rport was not deleted due to it coming back online within rport del
timeout, previously discovered speed would continue to show up. The fix is to
reset the speed when processing rport offline transition.

In rport attributes, rport's with unknown speed were indicated as TRL
enforced.  The right thing do to would be to use TRL default speed to
determine if TRL is enforced, when TRL is enabled.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: fix interrupt coalescing setting
Jing Huang [Fri, 9 Jul 2010 02:50:38 +0000 (19:50 -0700)]
[SCSI] bfa: fix interrupt coalescing setting

Do not update the coalesce flag of the intr_attr struct in driver config area
on config response.  This is to prevent the coalesce flag being reported as on
after an ioc disable/enable even if it was set to off before disable.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: use standards defined timeout for ELS/CT
Jing Huang [Fri, 9 Jul 2010 02:50:15 +0000 (19:50 -0700)]
[SCSI] bfa: use standards defined timeout for ELS/CT

Use standards defined 2 * RA_TOV as a timeout for ELS Request retries.
And standards defined 3 * RA_TOV as a timeout for FC-CT Request retries.
Also, added a check to send RPSC2 to a Brocade Fabric only.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: statistics and typo fix
Jing Huang [Fri, 9 Jul 2010 02:48:49 +0000 (19:48 -0700)]
[SCSI] bfa: statistics and typo fix

- Added time stamp for fcport stats reset
- Added new fileds to the statistics data structures.
- Typo removal and minor cleanup.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: ioc attributes fix
Jing Huang [Fri, 9 Jul 2010 02:48:12 +0000 (19:48 -0700)]
[SCSI] bfa: ioc attributes fix

This patch fixes the APIs to obtain ioc attributes
- fix API to obtain wwpn, wwnn, and mac.
- add API to get mfg wwpn, wwnn, and mac.
- fix API to obtain wwn of boot target.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: vport state machine fix
Jing Huang [Fri, 9 Jul 2010 02:47:08 +0000 (19:47 -0700)]
[SCSI] bfa: vport state machine fix

Vport state machine does not cleanup associated lport in some states: while
waiting for fdisc response or fdisc failure state. The fixe is to cleanup lport
on vport delete in all states.  In fdisc state, discard fdisc response and
delete lport and wait for lport deletecompletion. in error state, delete lport
and wait for delete completion.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: PBC vport create
Jing Huang [Fri, 9 Jul 2010 02:46:26 +0000 (19:46 -0700)]
[SCSI] bfa: PBC vport create

This patch enables creating PBC vport.
During fcs init, fcs will read PBC vport using bfa iocfc API and invoke fcb
callback to add the pbc vport entries into a list. The pbc vport list will be
traversed in the subsequent pci probe process and vport will be created using
fc transport provided vport create function.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: enable basic PBC support
Jing Huang [Fri, 9 Jul 2010 02:45:56 +0000 (19:45 -0700)]
[SCSI] bfa: enable basic PBC support

The patch includes the driver side changes to enable basic PBC (PreBoot
Configuration) feature.
- Data structure changes and new definitions for PBC.
- APIs to access PBC info.
- Remove unused code.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bfa: enable new hardware
Jing Huang [Fri, 9 Jul 2010 02:45:20 +0000 (19:45 -0700)]
[SCSI] bfa: enable new hardware

This patch enables support of new mezzanine cards for HP and IBM blade server.

- Add new pciids for HP and IBM mezzanine card.
- Add a new firmware image for HP mezzanine card, which is running in
  FC only mode. Rename firmware image to reflect the difference. Change the
  firmware download code accordingly for the above changes.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: driver fails to recover from injected PCIe bus errors
Eric Moore [Thu, 8 Jul 2010 20:44:34 +0000 (14:44 -0600)]
[SCSI] mpt2sas: driver fails to recover from injected PCIe bus errors

fixes surrounding PCIe enhanced error handling:

(1) We need to reject all request generated internaly inside the driver as well
as request arriving from the scsi mid layer when PCIe EEH is active. The fix is
to add a per adapter flag called pci_error_recovery which is checked thru out
the driver when request are generated.

(2) We don't need to call the pci_driver->remove directly from the PCIe
callbacks becuase its already called from the PCIe EEH code. In its place we are
shutting down the watchdog timer, and flushing back all pending IO.

(3) We need to save and restore the pci state across PCIe EEH handling.

Signed-off-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bnx2i: Updated version from 2.1.1 to 2.1.2
Eddie Wai [Thu, 1 Jul 2010 22:34:56 +0000 (15:34 -0700)]
[SCSI] bnx2i: Updated version from 2.1.1 to 2.1.2

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bnx2i: Added host param ISCSI_HOST_PARAM_IPADDRESS
Michael Chan [Thu, 1 Jul 2010 22:34:55 +0000 (15:34 -0700)]
[SCSI] bnx2i: Added host param ISCSI_HOST_PARAM_IPADDRESS

This sysfs attribute is proven to be useful during pivot_root.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Acked-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bnx2i: Fixed the TCP graceful termination initiation
Eddie Wai [Thu, 1 Jul 2010 22:34:54 +0000 (15:34 -0700)]
[SCSI] bnx2i: Fixed the TCP graceful termination initiation

In compliance to RFC793, a TCP graceful termination will be used
instead of an abortive termination for the case where the remote
has initiated the close of the connection.
Additionally, a TCP abortive termination will be used to close the
connection when a logout response is not received in time after a
logout request has been initiated.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Acked-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bnx2i: Fine tuned conn destroy and context destroy timeout values
Eddie Wai [Thu, 1 Jul 2010 22:34:53 +0000 (15:34 -0700)]
[SCSI] bnx2i: Fine tuned conn destroy and context destroy timeout values

Added variables to separate the fine tuned timeout values for
connection destroy and context destroy for both 1g and 10g devices.

v2: Extended the 5771X disconnect timeout from 10s to 20s as the firmware
has a retransmission timeout of 16s.  This fixes one of the iscsi_endpoint
leak issues when the target is slow or non-responsive to our TCP FIN.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Acked-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bnx2i: Optimized the bnx2i_stop connection clean up procedure
Eddie Wai [Thu, 1 Jul 2010 22:34:52 +0000 (15:34 -0700)]
[SCSI] bnx2i: Optimized the bnx2i_stop connection clean up procedure

For cases where the iSCSI disconnection procedure times out due to
the iSCSI daemon being slow or unresponsive, the bnx2i_stop routine
will now perform hardware cleanup via bnx2i_hw_ep_disconnect on all
active endpoints so that subsequent operations will perform properly.
Also moved the mutex locks inside ep_connect and ep_disconnect so
that proper exclusivity can resolve simultaneous calls to the
ep_disconnect routine.

v2: Removed the unnecessary read lock in the bnx2i_stop

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Acked-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bnx2i: Created an active linklist which holds bnx2i endpoints
Eddie Wai [Thu, 1 Jul 2010 22:34:51 +0000 (15:34 -0700)]
[SCSI] bnx2i: Created an active linklist which holds bnx2i endpoints

This introduces a new active linklist which would link up all active
bnx2i_endpoints.  This will be used by subsequent patches that
follows.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Acked-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] bnx2i: Separated the hardware's cleanup procedure from ep_disconnect
Eddie Wai [Thu, 1 Jul 2010 22:34:50 +0000 (15:34 -0700)]
[SCSI] bnx2i: Separated the hardware's cleanup procedure from ep_disconnect

This patch introduces a new bnx2i_hw_ep_disconnect routine which
contains all chip related disconnect and clean up procedure of
iSCSI offload connections.  This separation is intended as a
preparation for the subsequent bnx2i_stop patch.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] scsi_debug: fix map_region and unmap_region oops
FUJITA Tomonori [Sun, 27 Jun 2010 16:04:45 +0000 (01:04 +0900)]
[SCSI] scsi_debug: fix map_region and unmap_region oops

map_region and unmap_region could access to invalid memory area since
they don't check the size boundary.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ipr: change endian swap key to match hardware spec change
Wayne Boyer [Fri, 25 Jun 2010 00:00:59 +0000 (17:00 -0700)]
[SCSI] ipr: change endian swap key to match hardware spec change

The value used to change the endian representation on the new adapters has
changed.  This patch updates that value.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ipr: add support for new Obsidian-E embedded adapter
Wayne Boyer [Thu, 24 Jun 2010 20:34:14 +0000 (13:34 -0700)]
[SCSI] ipr: add support for new Obsidian-E embedded adapter

This patch allows the driver to recognize a new Obsidian-E based adapter that
uses a new subsystem ID.

This patch also fixes a few tab/space problems.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mvsas: fix potential NULL dereference
Jiri Slaby [Tue, 22 Jun 2010 11:42:02 +0000 (13:42 +0200)]
[SCSI] mvsas: fix potential NULL dereference

Stanse found that in mvs_abort_task, mvi_dev is dereferenced earlier
than tested for being NULL. Move the assignment below the test.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptfusion: print Doorbell register in a case of hard reset and timeout
Kei Tokunaga [Tue, 22 Jun 2010 10:01:51 +0000 (19:01 +0900)]
[SCSI] mptfusion: print Doorbell register in a case of hard reset and timeout

Printing Doorbell register in a case of hard reset and timeout
should be useful for figuring out the state of the system.

Signed-off-by: Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Acked-by: "Desai, Kashyap" <Kashyap.Desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] scsi:hosts.c Fix warning: variable 'rval' set but not used
Justin P. Mattock [Fri, 18 Jun 2010 20:16:07 +0000 (13:16 -0700)]
[SCSI] scsi:hosts.c Fix warning: variable 'rval' set but not used

The below patch fixes a warning message generated by gcc 4.6.0
  CC      drivers/scsi/hosts.o
drivers/scsi/hosts.c: In function 'scsi_host_alloc':
drivers/scsi/hosts.c:328:6: warning: variable 'rval' set but not used

Fix this by removing the rval but placing a printk warning where it
would have been set.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] Log msg when getting Unit Attention
Mike Christie [Sun, 25 Apr 2010 12:03:57 +0000 (07:03 -0500)]
[SCSI] Log msg when getting Unit Attention

If the user accidentally changes LUN mappings or it occurs
due to a bug, then it can cause data corruption that can take
months and months to track down. This patch adds a log
message when getting REPORT_LUNS_DATA_CHANGED and it adds
a generic message for other Unit Attentions with asc == 0x3f.

We are working on adding support for handling of these errors,
but I think until then we should at least log a message so
tracking down problems as a result of one of these changes
is a little easier.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptsas: fixed hot-removal processing
Kei Tokunaga [Wed, 7 Apr 2010 10:17:24 +0000 (19:17 +0900)]
[SCSI] mptsas: fixed hot-removal processing

This patch fixes mptsas disk hot-removal processing.  The
hot-removal processing doesn't complete because of this condition.

  drivers/message/fusion/mptsas.c:
  mptsas_taskmgmt_complete()

  if ((mptsas_find_vtarget(ioc, channel, id)) && !ioc->fw_events_off)
    mptsas_queue_device_delete(...);

mptsas_queue_device_delete(), which must be called for
hot-removal, never gets called because mptsas_find_vtarget()
always returns 0 here.  At that time, the vtarget has already
been freed in mptsas_target_destroy(), and also the scsi_device
has been marked as SDEV_DEL.

As a result of the issue, port deletion functions won't get
called and the device ends up being in an incomplete state.
(Some data structures and sysfs entries, which should be
removed in hot-removal, remain.)  One side effect of this is
that a hot-addition of the device (bringing the device back
on) fails.

This patch just removes mptsas_find_vtarget() from the if-state
condition.

Signed-off-by: Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Acked-by: "Desai, Kashyap" <Kashyap.Desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ipr: add MMIO write to perform BIST for 64 bit adapters
Wayne Boyer [Thu, 17 Jun 2010 18:51:40 +0000 (11:51 -0700)]
[SCSI] ipr: add MMIO write to perform BIST for 64 bit adapters

The 64 bit chip used in new adapters does not properly support the BIST register
in PCI config space.  This patch implements an alternative MMIO write reset
method.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] SCSI: Support Type C RAID controller
Nick Cheng [Tue, 13 Jul 2010 12:03:04 +0000 (20:03 +0800)]
[SCSI] SCSI: Support Type C RAID controller

1. To support Type C RAID controller, ACB_ADAPTER_TYPE_C, i.e. PCI device
ID: 0x1880.
Signed-off-by: Nick Cheng< nick.cheng@areca.com.tw >
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] enclosure: fix error path - actually return ERR_PTR() on error
James Bottomley [Fri, 12 Mar 2010 22:14:42 +0000 (16:14 -0600)]
[SCSI] enclosure: fix error path - actually return ERR_PTR() on error

we also need to clean up and free the cdev.

Reported-by: Jani Nikula <ext-jani.1.nikula@nokia.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ibmvscsi: Driver version 1.5.9
Brian King [Thu, 17 Jun 2010 18:56:04 +0000 (13:56 -0500)]
[SCSI] ibmvscsi: Driver version 1.5.9

Bump driver version

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ibmvscsi: Fix possible request_limit issue
Brian King [Thu, 17 Jun 2010 18:56:03 +0000 (13:56 -0500)]
[SCSI] ibmvscsi: Fix possible request_limit issue

If we encounter an error when sending a management datagram (i.e. non
SCSI command, such as virtual adapter initialization command), we
end up incrementing the request_limit, even though we don't decrement
it for these commands. Fix this up by doing this increment in
the error path for SRP commands only.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ibmvscsi: Fix error path deadlock
Brian King [Thu, 17 Jun 2010 18:56:02 +0000 (13:56 -0500)]
[SCSI] ibmvscsi: Fix error path deadlock

Fixes a deadlock that can occur if we hit a command timeout
during the virtual adapter initialization. The event done
functions are written with the assumption that no locks are held,
however, when purging requests this is not true. Fix up the
purge function to drop the lock so that the done function
is not called with the lock held, which can cause a deadlock.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ibmvscsi: Fix softlockup on resume
Brian King [Thu, 17 Jun 2010 18:56:00 +0000 (13:56 -0500)]
[SCSI] ibmvscsi: Fix softlockup on resume

This fixes a softlockup seen on resume. During resume, the CRQ
must be reenabled. However, the H_ENABLE_CRQ hcall used to do
this may return H_BUSY or H_LONG_BUSY. When this happens, the
caller is expected to retry later. This patch changes a simple
loop, which was causing the softlockup, to a loop at task level
which sleeps between retries rather than simply spinning.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ibmvfc: Driver version 1.0.8
Brian King [Thu, 17 Jun 2010 18:55:16 +0000 (13:55 -0500)]
[SCSI] ibmvfc: Driver version 1.0.8

Bump driver version.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ibmvfc: Add support for fc_block_scsi_eh
Brian King [Thu, 17 Jun 2010 18:55:15 +0000 (13:55 -0500)]
[SCSI] ibmvfc: Add support for fc_block_scsi_eh

Adds support for fc_block_scsi_eh to block the EH handlers if
the target device is in the blocked state to ensure we don't
take devices offline.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] ibmvfc: Fix soft lockup on resume
Brian King [Thu, 17 Jun 2010 18:55:13 +0000 (13:55 -0500)]
[SCSI] ibmvfc: Fix soft lockup on resume

This fixes a softlockup seen on resume. During resume, the CRQ
must be reenabled. However, the H_ENABLE_CRQ hcall used to do
this may return H_BUSY or H_LONG_BUSY. When this happens, the
caller is expected to retry later. Normally the H_ENABLE_CRQ
succeeds relatively soon. However, we have seen cases where
this can take long enough to see softlockup warnings.
This patch changes a simple loop, which was causing the
softlockup, to a loop at task level which sleeps between
retries rather than simply spinning.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt fusion: Cleanup some duplicate calls in mptbase.c
Bandan Das [Wed, 16 Jun 2010 17:39:42 +0000 (13:39 -0400)]
[SCSI] mpt fusion: Cleanup some duplicate calls in mptbase.c

In mpt_detach, call to pci_set_drvdata is redundant because it
has already been called in mpt_adapter_disable. In mpt_attach,
ioc->pcidev is set to pdev two times.

Signed-off-by: Bandan Das <bandan.das@stratus.com>
Acked-by: "Desai, Kashyap" <Kashyap.Desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptfusion: Bump version 03.04.16
Kashyap, Desai [Thu, 17 Jun 2010 09:14:00 +0000 (14:44 +0530)]
[SCSI] mptfusion: Bump version 03.04.16

Upgrade driver version to 3.4.16

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptfusion: Added missing reset for ioc_reset_in_progress in SoftReset
Kashyap, Desai [Thu, 17 Jun 2010 09:12:39 +0000 (14:42 +0530)]
[SCSI] mptfusion: Added missing reset for ioc_reset_in_progress in SoftReset

Added missing part which will reset ioc_reset_in_progress before returning from SoftResetHandler.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptfusion: Added code for occationally SATA hotplug failure.
Kashyap, Desai [Thu, 17 Jun 2010 09:11:48 +0000 (14:41 +0530)]
[SCSI] mptfusion: Added code for occationally SATA hotplug failure.

Issue: SATA hotplug does not work sometimes.
At the time of ADD device/ADD phys disk, drive may fail to add SATA device
due to temporary SAS Address for SATA device generated by firmware. Final
SAS address for SATA driver will be generated only after disk spinup is
done. This may take some times for slow spining SATA drives.

At phy link up driver gets attached device sas address and stores into
phyinfo. At the time of ADD event driver will read sas device page0 using
channel and FW ID provided in ADD Device event. Here in case of SATA drives,
driver will see miss match in phyinfo->sas_address and latest sas address
read from SAS DEVICE PAGE0 and eventually device won't be added to OS.

Fix:
When Driver read SAS DEVICE PAGE0, it can identify Device type looking at
device_info. If device is SATA drive and sas address mismatch happens,
Driver will do same stuffs which happened at the time of LINK UP to get
correct piece of information from Pages. ( Find parent device and refresh
parent device phys either HBA refresh/Exp refresh)

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptfusion: schedule_target_reset from all Reset context
Kashyap, Desai [Thu, 17 Jun 2010 09:10:56 +0000 (14:40 +0530)]
[SCSI] mptfusion: schedule_target_reset from all Reset context

Issue:
target reset will be queued to driver's internal queue to get schedule
later. When driver add target into internal target_reset queue we will block IOs
on those target using scsi midlayer API. Now due to some cause driver is not
executing those target_reset list and it is always in block state.

Changes:
now we are clearing target_reset queue from all other Callback context
instead of only DeviceReset context.Now wherever driver is clearing
taskmgmt_in_progress flag it is considering target_reset queue cleanup
also.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptfusion: Added sanity to check B_T mapping for device before adding to OS
Kashyap, Desai [Thu, 17 Jun 2010 09:10:10 +0000 (14:40 +0530)]
[SCSI] mptfusion: Added sanity to check B_T mapping for device before adding to OS

Added sanity check before treating any device is a valid device.
It is possible that firmware can have device page0 in its table, but that
devicemay not be available in topology. Device will be available in topology
only if there is Bus Target mapping is done in firmware. Driver will always
check B_T mapping of firmware before reporting device to upper layer.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptfusion: Corrected declaration of device_missing_delay
Kashyap, Desai [Thu, 17 Jun 2010 09:09:25 +0000 (14:39 +0530)]
[SCSI] mptfusion: Corrected declaration of device_missing_delay

device missing delay is 8 bit value in io unit pg1. Making correct variable
declaration for device_missing_delay.

The driver is storing the calculated device missing delay in IOC structure
as a u8 instead of a u16. It needs to be a u16 if the delay is > 255.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptfusion: Use DID_TRANSPORT_DISRUPTED instead of DID_BUS_BUSY
Kashyap, Desai [Thu, 17 Jun 2010 09:07:25 +0000 (14:37 +0530)]
[SCSI] mptfusion: Use DID_TRANSPORT_DISRUPTED instead of DID_BUS_BUSY

Changed the return value for Nexus Loss IOs to be DID_TRANSPORT_DISRUPTED.
What this will allow is the multi-path driver to delay the fail over
process. They would like the path to keep up as long as the nexus loss
Loginfo is return from firmware. With DID_BUS_BUSY the path fails over
immediately.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mptfusion: Set fw_events_off to 1 at driver load time.
Kashyap, Desai [Thu, 17 Jun 2010 09:05:46 +0000 (14:35 +0530)]
[SCSI] mptfusion: Set fw_events_off to 1 at driver load time.

fw_events_off is flag checking for driver to do Event handling or not.
Normally it should be OFF at the time of initialization. Only enable it at
the time of INTR enable of device first time. This will always occur only
after resource allocation.

ioc->fw_events_off = 1 is set in mpt_attach()

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Bump version 06.100.00.00
Kashyap, Desai [Thu, 17 Jun 2010 08:20:57 +0000 (13:50 +0530)]
[SCSI] mpt2sas: Bump version 06.100.00.00

Version upgrade patch

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Copy message frame before releasing to free pool to have a local...
Kashyap, Desai [Thu, 17 Jun 2010 08:20:11 +0000 (13:50 +0530)]
[SCSI] mpt2sas: Copy message frame before releasing to free pool to have a local reference.

Current driver is  not clearing the per device tm_busy flag
following the Task Mangement request completion from the IOCTL path.
When this flag is set, the IO queues are frozen.   The reason the flag
didn't get cleared is becuase the driver is referencing
memory associated to the mpi request following the completion, when
the memory had been reallocated for a new request.  When the memory
was reallocated, the driver didn't clear the flag becuase it was
expecting a task managment reqeust, and the reallocated request was
for SCSI_IO.  To fix the problem the driver needs to have a cached
backup copy of the original reqeust.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Copy sense buffer instead of working on direct memory location
Kashyap, Desai [Thu, 17 Jun 2010 08:19:28 +0000 (13:49 +0530)]
[SCSI] mpt2sas: Copy sense buffer instead of working on direct memory location

(1) driver was not setting the sense data size prior to sending SCSI_IO,
resulting in the 0x31190000 loginfo
(2) The driver needs to copy the sense data to local buffer prior
to releasing the request message frame.  If not, the sense buffer gets
overwritten by the next SCSI_IO request.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Adding additional message to error escalation callback
Kashyap, Desai [Thu, 17 Jun 2010 08:18:46 +0000 (13:48 +0530)]
[SCSI] mpt2sas: Adding additional message to error escalation callback

Adding additional messages to the error escallation callbacks which
displays the wwid, sas address, handle, phy number, enclosure logical id,
and slot. In the same eh callbacks, routines, the printks were converted
to sdev_printks, which displays the bus target mapping.  These additional
modifications help better identify the device which is in recovery.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Add additional check for responding volumes after Host Reset
Kashyap, Desai [Thu, 17 Jun 2010 08:18:10 +0000 (13:48 +0530)]
[SCSI] mpt2sas: Add additional check for responding volumes after Host Reset

ISSUE DESCRIPTION:
This test case involves creating two RAID1 volumes,  then
simultaneiously issue host reset and pull all the drives associated to
the 1st raid volume.  The observed behavour is the physical drives are
removed, however the volume remains.   The expected behavour is the
volume as well as physical drives should be removed from OS.

FIX:
Add support in the post host reset device scan logic for raid volumes
where the driver will have an additional check for responding raid
volume where the status should be either online, optimal, or degraded.
So for voluemes that have a status of missing or failed, the driver
will mark them for deletion.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Added -ENOMEM return type when allocation fails
Kashyap, Desai [Thu, 17 Jun 2010 08:17:29 +0000 (13:47 +0530)]
[SCSI] mpt2sas: Added -ENOMEM return type when allocation fails

In the driver mpt2sas_base_attach subroutine, we need to add
support to return the proper error code when there are memory allocation
failures, e.g. returning -ENOMEM.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Redesign Raid devices event handling using pd_handles per HBA
Kashyap, Desai [Thu, 17 Jun 2010 08:16:13 +0000 (13:46 +0530)]
[SCSI] mpt2sas: Redesign Raid devices event handling using pd_handles per HBA

Actual problem :
Driver  may receiving the top level expander
removal event prior to all the individual PD removal events, hence the
driver is breaking down all the PDs in advanced to the actaul PD UNHIDE
event. Driver sends multiple
Target Resets to the same volume handle for each individual PD removal.

FIX DESCRIPTION:
To fix this issue, the entire PD device handshake protocal has to be
moved to interrupt context so the breakdown occurs immediately after the
actual UNHIDE event arrives.  The driver will only issue one Target Reset to
the volume handle, occurring after the FAILED or MISSING volume status
event arrives from interrupt context. For the PD UNHIDE event, the driver
will issue target resets to the PD handles, followed by OP_REMOVE.  The
driver will set the "deteleted" flag during interrupt context.  A "pd_handle"
bitmask was introduced so the driver has a list of known pds during entire
life of the PD; this replaces the "hidden_raid_component" flag handle in
the sas_device object.  Each bit in the bitmask represents a device handle.
The bit in the bitmask would be toggled ON/OFF when the HIDE/UNHIDE
events arrive; also this pd_handle bitmask would bould be refreshed
across host resets.

Here we kept older behavior of sending target reset to volume when there is
a single drive pull, wait for the reply, then send target resets
to the PDs.  We kept this behavior so the driver will
behave the same for older versions of firmware.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Tie a log info message to a specific PHY.
Kashyap, Desai [Thu, 17 Jun 2010 08:15:17 +0000 (13:45 +0530)]
[SCSI] mpt2sas: Tie a log info message to a specific PHY.

Add support to display additional debug info for SCSI_IO and
RAID_SCSI_IO_PASSTHROUGH sent from the normal entry queued entry
point, as well as internal generated commands, and IOCTLS.  The
additional debug info included the phy number, as well as the
sas address, enclosure logical id, and slot number.  This debug info
has to be enabled thru the logging_level command line option, by
default this will not be displayed.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: print level KERN_DEBUG is replaced by KERN_INFO
Kashyap, Desai [Thu, 17 Jun 2010 08:13:57 +0000 (13:43 +0530)]
[SCSI] mpt2sas: print level KERN_DEBUG is replaced by KERN_INFO

Converting print level from  MPT2SAS_DEBUG_FMT  to MPT2SAS_INFO_FMT.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Added sysfs support for trace buffer
Kashyap, Desai [Thu, 17 Jun 2010 08:13:17 +0000 (13:43 +0530)]
[SCSI] mpt2sas: Added sysfs support for trace buffer

Added support so the diag ring buffer can be pulled via sysfs
Added three new shost attributes: host_trace_buffer,
host_trace_buffer_enable, and host_trace_buffer_size.  The
host_trace_buffer_enable attribute is used to either post or release
the trace buffers.   The host_trace_buffer_size attribute contains
the size of the trace buffer. The host_trace_buffer atttribute contains
a maximum 4KB window of the buffer. In order to read the entire host buffer,
you will need to write the offset to  host_trace_buffer prior to reading
it. release the host buffer, then write the entire host buffer contents to
a file.
In addition to this enhancement, we moved the automatic posting of host buffers
at driver load time to be called prior to port_enable, instead of after.
That way discovery is available in the host buffer.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: MPI header version N is updated.
Kashyap, Desai [Thu, 17 Jun 2010 08:07:59 +0000 (13:37 +0530)]
[SCSI] mpt2sas: MPI header version N is updated.

Updating MPI header version N.
Removed mpi_history.txt.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Added sysfs counter for ioc reset
Kashyap, Desai [Thu, 17 Jun 2010 08:06:53 +0000 (13:36 +0530)]
[SCSI] mpt2sas: Added sysfs counter for ioc reset

Added a new sysfs shost attribute called ioc_reset_count. This will
keep count of host resets (both diagnostic and message unit).

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Added expander phy control support
Kashyap, Desai [Thu, 17 Jun 2010 08:04:31 +0000 (13:34 +0530)]
[SCSI] mpt2sas: Added expander phy control support

Added support to send link resets, hard resets, enable/disable phys, and
changing link rates for for expanders.  This will be exported to
attributes within the sas transport layer.  A new wrapper function was
added for sending SMP passthru to expanders for phy control.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Added expander phy counter support
Kashyap, Desai [Thu, 17 Jun 2010 08:02:54 +0000 (13:32 +0530)]
[SCSI] mpt2sas: Added expander phy counter support

Added support to retrieve the invalid_dword_count,
running_disparity_error_count, loss_of_dword_sync_count, and
phy_reset_problem_count for expanders.  This will be exported to
attributes within the sas transport layer.  A new wrapper function was
added for sending SMP passthru to retrieve the expander phy error log.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: staged device discovery. disable_discovery module parameter is added.
Kashyap, Desai [Thu, 17 Jun 2010 08:01:17 +0000 (13:31 +0530)]
[SCSI] mpt2sas: staged device discovery. disable_discovery module parameter is added.

Added command line option called disable_discovery.  When enabled
on the command line, the driver will not send a port_enable when loaded
for the first time.   If port_enable is not called, then there is
no discovery of devices, as well as the sas topology.  Then later if one
desires to invoke discovery, then they will need to issue a diagnostic reset.
A diagnostic reset can be issued various ways. One of the way is throught
sysfs.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Hold Controller reset when another reset is in progress
Kashyap, Desai [Thu, 17 Jun 2010 07:58:55 +0000 (13:28 +0530)]
[SCSI] mpt2sas: Hold Controller reset when another reset is in progress

Driver should not allow multiple host reset when already host reset is in
progress. It is possible that host reset was sent by scsi mid layer while there was already an host reset active,
either issued via IOCTL interface or internaly, like a config page timeout.
Since there was a host reset active, the driver would return a FAILED response
to the scsi mid layer. The solution is make sure pending host resets will
wait for the active host reset to complete before returning control
back up the call stack.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] mpt2sas: Fix to use sas device list instead of enclosure list for _transpor_ge...
Kashyap, Desai [Thu, 17 Jun 2010 07:55:13 +0000 (13:25 +0530)]
[SCSI] mpt2sas: Fix to use sas device list instead of enclosure list for _transpor_get_enclosure_identifier.

Enclosure_identifier not being returned by mpt2sas
The driver exports callback function to the sas transport layer
for obtaining the enclosure logical id.  This function is called
_transport_get_enclosure_identifier.  The driver was searching
the wrong list for the enclosure_identifier.  The driver should be
searching the sas device list instead of enclosure list.  The
sas address that is passed to the driver is for the end device, not
enclosure.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] cxgb3i: zero out reserved or un-used fields.
Karen Xie [Thu, 17 Jun 2010 00:10:37 +0000 (17:10 -0700)]
[SCSI] cxgb3i: zero out reserved or un-used fields.

Zero out the reserved or un-used CPL message fields to prevent any garbage
value.

Signed-off-by: Karen Xie <kxie@chelsio.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] hpsa: sanitize max commands
Stephen M. Cameron [Wed, 16 Jun 2010 18:51:56 +0000 (13:51 -0500)]
[SCSI] hpsa: sanitize max commands

Some controllers might try to tell us they support 0 commands
in performant mode.  This is a lie told by buggy firmware.
We have to be wary of this lest we try to allocate a negative
number of command blocks, which will be treated as unsigned,
and get an out of memory condition.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] hpsa: separate intx and msi/msix interrupt handlers
Stephen M. Cameron [Wed, 16 Jun 2010 18:51:50 +0000 (13:51 -0500)]
[SCSI] hpsa: separate intx and msi/msix interrupt handlers

There are things which need to be done in the intx
interrupt handler which do not need to be done in
the msi/msix interrupt handler, like checking that
the interrupt is actually for us, and checking that the
interrupt pending bit on the hardware is set (which we
weren't previously doing at all, which means old controllers
wouldn't work), so it makes sense to separate these into
two functions.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] hpsa: forbid hard reset of 640x boards
Stephen M. Cameron [Wed, 16 Jun 2010 18:51:45 +0000 (13:51 -0500)]
[SCSI] hpsa: forbid hard reset of 640x boards

The 6402/6404 are two PCI devices -- two Smart Array controllers
-- that fit into one slot.  It is possible to reset them independently,
however, they share a battery backed cache module.  One of the pair
controls the cache and the 2nd one access the cache through the first
one.  If you reset the one controlling the cache, the other one will
not be a happy camper.  So we just forbid resetting this conjoined
mess.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] hpsa: Fix hard reset code.
Stephen M. Cameron [Wed, 16 Jun 2010 18:51:40 +0000 (13:51 -0500)]
[SCSI] hpsa: Fix hard reset code.

Smart Array controllers newer than the P600 do not honor the
PCI power state method of resetting the controllers.  Instead,
in these cases we can get them to reset via the "doorbell" register.

This escaped notice until we began using "performant" mode because
the fact that the controllers did not reset did not normally
impede subsequent operation, and so things generally appeared to
"work".  Once the performant mode code was added, if the controller
does not reset, it remains in performant mode.  The code immediately
after the reset presumes the controller is in "simple" mode
(which previously, it had remained in simple mode the whole time).
If the controller remains in performant mode any code which presumes
it is in simple mode will not work.  So the reset needs to be fixed.

Unfortunately there are some controllers which cannot be reset by
either method. (eg. p800).  We detect these cases by noticing that
the controller seems to remain in performant mode even after a
reset has been attempted.  In those case, we proceed anyway,
as if the reset has happened (and skip the step of waiting for
the controller to become ready -- which is expecting it to be in
"simple" mode.)  To sum up, we try to do a better job of resetting
the controller if "reset_devices" is set, and if it doesn't work,
we print a message and try to continue anyway.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] hpsa: factor out the code to reset controllers on driver load
Stephen M. Cameron [Wed, 16 Jun 2010 18:51:35 +0000 (13:51 -0500)]
[SCSI] hpsa: factor out the code to reset controllers on driver load

for kdump support

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] hpsa: factor out hpsa_find_cfg_addrs.
Stephen M. Cameron [Wed, 16 Jun 2010 18:51:30 +0000 (13:51 -0500)]
[SCSI] hpsa: factor out hpsa_find_cfg_addrs.

Rationale for this is that I will also need to use this code
in fixing kdump host reset code prior to having the hba structure.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] hpsa: make hpsa_find_memory_BAR not require the per HBA structure.
Stephen M. Cameron [Wed, 16 Jun 2010 18:51:25 +0000 (13:51 -0500)]
[SCSI] hpsa: make hpsa_find_memory_BAR not require the per HBA structure.

Rationale for this is that in order to fix the hard reset code used
by kdump, we need to use this function before we even have the per
HBA structure.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] hpsa: Make "hpsa_allow_any=1" boot param enable Compaq Smart Arrays.
Stephen M. Cameron [Wed, 16 Jun 2010 18:51:20 +0000 (13:51 -0500)]
[SCSI] hpsa: Make "hpsa_allow_any=1" boot param enable Compaq Smart Arrays.

We were previously only accepting HP boards.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] hpsa: add new controllers
Stephen M. Cameron [Wed, 16 Jun 2010 18:51:15 +0000 (13:51 -0500)]
[SCSI] hpsa: add new controllers

Add 5 CCISSE smart array controllers

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] arcmsr: Support 1024 scatter-gather list entries and improve AP while FW trapp...
Nick Cheng [Fri, 18 Jun 2010 07:39:12 +0000 (15:39 +0800)]
[SCSI] arcmsr: Support 1024 scatter-gather list entries and improve AP while FW trapped and behaviors of EHs

1. To support 4M/1024 scatter-gather list entry, reorganize struct
   ARCMSR_CDB and struct CommandControlBlock
2. To modify arcmsr_probe
3. In order to help fix F/W issue, add the driver mode for type B card
4. To improve AP's behavior while F/W resets
5. To unify struct MessageUnit_B's members' naming in all OS drivers'
6. To improve error handlers, arcmsr_bus_reset(), arcmsr_abort()
7. To fix the arcmsr_queue_command() in bus reset stage, just let the
   commands pass down to FW, don't block

Signed-off-by: Nick Cheng <nick.cheng@areca.com.tw>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfc: fix indefinite rport restart
Joe Eykholt [Fri, 11 Jun 2010 23:44:57 +0000 (16:44 -0700)]
[SCSI] libfc: fix indefinite rport restart

Remote ports were restarting indefinitely after getting
rejects in PRLI.

Fix by adding a counter of restarts and limiting that with
the port login retry limit as well.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfc: Fix remote port restart problem
Joe Eykholt [Fri, 11 Jun 2010 23:44:51 +0000 (16:44 -0700)]
[SCSI] libfc: Fix remote port restart problem

This patch somewhat combines two fixes to remote port handing in libfc.

The first problem was that rport work could be queued on a deleted
and freed rport.  This is handled by not resetting rdata->event
ton NONE if the rdata is about to be deleted.

However, that fix led to the second problem, described by
Bhanu Gollapudi, as follows:
> Here is the sequence of events. T1 is first LOGO receive thread, T2 is
> fc_rport_work() scheduled by T1 and T3 is second LOGO receive thread and
> T4 is fc_rport_work scheduled by T3.
>
> 1. (T1)Received 1st LOGO in state Ready
> 2. (T1)Delete port & enter to RESTART state.
> 3. (T1)schdule event_work, since event is RPORT_EV_NONE.
> 4. (T1)set event = RPORT_EV_LOGO
> 5. (T1)Enter RESTART state as disc_id is set.
> 6. (T2)remember to PLOGI, and set event = RPORT_EV_NONE
> 6. (T3)Received 2nd LOGO
> 7. (T3)Delete Port & enter to RESTART state.
> 8. (T3)schedule event_work, since event is RPORT_EV_NONE.
> 9. (T3)Enter RESTART state as disc_id is set.
> 9. (T3)set event = RPORT_EV_LOGO
> 10.(T2)work restart, enter PLOGI state and issues PLOGI
> 11.(T4)Since state is not RESTART anymore, restart is not set, and the
> event is not reset to RPORT_EV_NONE. (current event is RPORT_EV_LOGO).
> 12. Now, PLOGI succeeds and fc_rport_enter_ready() will not schedule
> event_work, and hence the rport will never be created, eventually losing
> the target after dev_loss_tmo.

So, the problem here is that we were tracking the desire for
the rport be restarted by state RESTART, which was otherwise
equivalent to DELETE.  A contributing factor is that we dropped
the lock between steps 6 and 10 in thread T2, which allows the
state to change, and we didn't completely re-evaluate then.

This is hopefully corrected by the following minor redesign:

Simplify the rport restart logic by making the decision to
restart after deleting the transport rport.  That decision
is based on a new STARTED flag that indicates fc_rport_login()
has been called and fc_rport_logoff() has not been called
since then.  This replaces the need for the RESTART state.

Only restart if the rdata is still in DELETED state
and only if it still has the STARTED flag set.

Also now, since we clear the event code much later in the
work thread, allow for the possibility that the rport may
have become READY again via incoming PLOGI, and if so,
queue another event to handle that.

In the problem scenario, the second LOGO received will
cause the LOGO event to occur again.

Reported-by: Bhanu Gollapudi <bprakash@broadcom.com>
Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] fnic: fnic_scsi.c: clean up
Roel Kluin [Fri, 11 Jun 2010 23:44:46 +0000 (16:44 -0700)]
[SCSI] fnic: fnic_scsi.c: clean up

In fnic_abort_cmd() and fnic_device_reset() assign `rport' earlier to make
FNIC_SCSI_DBG() calls cleaner.

In fnic_clean_pending_aborts() `rport' is not used.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Abhijeet Joglekar <abjoglek@cisco.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfc: lport state is enum not bit mask
Yi Zou [Fri, 11 Jun 2010 23:44:41 +0000 (16:44 -0700)]
[SCSI] libfc: lport state is enum not bit mask

lport state is enum not bit mask.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfcoe: Check for order and missing critical descriptors for FIP ELS requests
Bhanu Prakash Gollapudi [Fri, 11 Jun 2010 23:44:36 +0000 (16:44 -0700)]
[SCSI] libfcoe: Check for order and missing critical descriptors for FIP ELS requests

As per FC-BB-5 rev.2, section 7.8.7.1, strict ordering of FIP descriptors
is required for ELS requests. Also, look for missing and duplicate critical
descriptors.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfcoe: Host doesnt handle CVL to NPIV ports
Bhanu Prakash Gollapudi [Fri, 11 Jun 2010 23:44:31 +0000 (16:44 -0700)]
[SCSI] libfcoe: Host doesnt handle CVL to NPIV ports

Clear virtual link for NPIV ports is now handled by resetting
the matching vnport.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfcoe: Handle duplicate critical descriptors
Bhanu Prakash Gollapudi [Fri, 11 Jun 2010 23:44:25 +0000 (16:44 -0700)]
[SCSI] libfcoe: Handle duplicate critical descriptors

As per FC-BB-5 rev 2, section 7.8.6.2, malformed FIP frame shall be
discarded. Drop discovery adv, ELS and CLV's with duplicate critical
descriptors.

[Resending after incorporating Joe's review comments]

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfcoe: update FIP FCF D flag from advertisments
Joe Eykholt [Fri, 11 Jun 2010 23:44:20 +0000 (16:44 -0700)]
[SCSI] libfcoe: update FIP FCF D flag from advertisments

Allow the D flag (indicating that keep-alives are not needed) to
be updated dynamically from received FIP advertisements.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfcoe: Use fka_period as periodic timeouts to age out fcf if
Joe Eykholt [Fri, 11 Jun 2010 23:44:15 +0000 (16:44 -0700)]
[SCSI] libfcoe: Use fka_period as periodic timeouts to age out fcf if

keep alives are disabled due to fd_flags set and also
stop updating keep alive values in that case.

Update select fcf time only if fcf is not already selected or
select time is not already determined from parse adv, and then
have select time cleared only once after fcf is selected.

Changed deadline check to time_after_eq() from time_after()
since now next timeout will be on exact 2.5 times FKA followed
by first advertisement.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfcoe: fix lenient aging of FCF advertisements
Joe Eykholt [Fri, 11 Jun 2010 23:44:10 +0000 (16:44 -0700)]
[SCSI] libfcoe: fix lenient aging of FCF advertisements

[This patch has several improvements to the code in
the fip timers.  It hasn't been tested yet.
I'm sending it out for review.  Vasu, perhaps you can
merge this with your patch and test it together.]

The current code allows an advertisement to be used
even if it has been 3 times the FCF keep-alive
advertisement period (FKA) since one was received from
that FCF.  The spec. calls for 2.5 times FKA.

Fix this and make sure we detect missed keep-alives promptly.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfc: Handle unsolicited PRLO request
Bhanu Prakash Gollapudi [Fri, 11 Jun 2010 23:44:04 +0000 (16:44 -0700)]
[SCSI] libfc: Handle unsolicited PRLO request

Resubmitting after incorporating Joe's review comment.

Unsolicited PRLO request is now handled by sending LS_ACC,
and then relogin to the remote port if an N-port login
session exists for that remote port.

Note that this patch should be applied on top of Joe Eykholt's
"Fix remote port restart problem" patch.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] fcoe: clean up TBD comments in FCoE prototype header
Joe Eykholt [Fri, 11 Jun 2010 23:43:59 +0000 (16:43 -0700)]
[SCSI] fcoe: clean up TBD comments in FCoE prototype header

Some old comments in fc_fcoe.h say TBD long after the
standard has been passed by T11.  Clean them up.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
14 years ago[SCSI] libfc: Honor LS_ACC response codes for PRLI
Bhanu Prakash Gollapudi [Fri, 11 Jun 2010 23:43:54 +0000 (16:43 -0700)]
[SCSI] libfc: Honor LS_ACC response codes for PRLI

As per FC-LS Rev 1.62 table 46, response codes are handled as follows:

1. If the Req executed is true, PRLI is accepted.
2. If Req executed is not set,  if resp code is 5,
   PRLI is not retried and port is logged out.
3. If resp code is anything apart from 1 or 5, PRLI is retired
   upto max retry count.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>