Граф коммитов

179469 Коммитов

Автор SHA1 Сообщение Дата
Jayamohan Kallickal 5dc1c416b3 [SCSI] be2iscsi: Proper checking of state
This patch adds proper checking of value in for hba state.
We would be adding more states later on

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:34:13 -06:00
Jayamohan Kallickal 230dceb431 [SCSI] be2iscsi: Fix for first_burst
This patch fixes the first_burst being modified
instead of max_burst

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:34:11 -06:00
Jayamohan Kallickal d2eeb1ac35 [SCSI] be2iscsi: changing copyright to 2010
This patch replaces 2009 with 2010 in copyright statement

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:34:09 -06:00
Jayamohan Kallickal 32951dd8cd [SCSI] be2iscsi: Remove Ring mode from driver
Ring mode is not used. This patch removes the code.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:34:07 -06:00
Dmitry Torokhov d0e2ddff7c [SCSI] vmw_pvscsi: fix signedness warning with newer compilers
pvscsi_setup_msix() expects 'irq' argument to be an int but is being
passed unsigned int. Unsigned int is more proper type for IRQ number
so let's use it. This shuts off a compile warning with recent
compilers.

Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Acked-by: Alok Kataria <akataria@vmware.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:31:28 -06:00
Martin K. Petersen fa4698fcf5 [SCSI] sd: Combine DIF/DIX error handling
DIF and DIX errors are handled identically at this point.  Collapse the
switch cases into one and let scsi_io_completion print result and sense
data.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:30:39 -06:00
Roel Kluin d44a6d2bbf [SCSI] lpfc: unify two if branches with the same code in lpfc_decode_firmware_rev()
Regardless of the flag state, the branches execute the same code

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:28:38 -06:00
Jayamohan Kallickal a3babda5b3 [SCSI] be2iscsi: Fix to allow driver to load when the FW allows more cids
This fix allows the driver to load when the FW allows more cids
than than the driver supports. The driver will limit the number of cid
to what it can support. There was no reason to fail the driver load,so,
correcting that

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:26:05 -06:00
Jayamohan Kallickal aa3590329f [SCSI] be2iscsi: Fixing the number of SGE's
The number of SGE's supported is fixed to what the
chip expects. Also, the max sectors set to tested values

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:26:03 -06:00
Jayamohan Kallickal 48bd86cf21 [SCSI] be2iscsi: Fixing Bug for multiple SGEs
The patch fixes a but where the sg_next is not assigned and hence
the first sge was being resused wrongly

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:26:01 -06:00
Kashyap, Desai e4b8972c61 [SCSI] mpt2sas: Bump version 04.100.01.00
Version upgraded to 04.100.01.00.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:45 -06:00
Kashyap, Desai 84f0b04a0e [SCSI] mpt2sas: Enable TLR for SSP TAPE drives (Added SAS Transport APIs)
If TLR is supported for end device, MPT2SAS driver will enable the TLR
bit in the SCSI_IO for every request. If there is a response with
MPI2_SCSITASKMGMT_RSP_INVALID_FRAME, the driver will turn off the TLR
logic.

[jejb: updated to new transport class TLR API]
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:44 -06:00
Kashyap, Desai f4af3c1411 [SCSI] mpt2sas: Update driver header to latest MPI Spec.
Update header to latest MPI SPEC revision.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:44 -06:00
Kashyap, Desai 50d5c60634 [SCSI] mpt2sas: Added phy_enable and set_phy_speed sysfs callback support.
Added new callbacks phy_enable and set_phy_speed in the
mpt2sas_transport_functions template. This will allow end user to
enable/disable phys and change links rates using the SysFS interface.
Current implementation only supports direct attached phys, but we
could in the future add support for expander based phys.
A new subroutine mpt2sas_config_set_sas_iounit_pg1 was added;
this wrapper function used to send request to controller firmware to modify
the phys and link rates. A new subroutine _transport_find_local_phy was added;
a function for easly obtaining the local phy object for direct attached.

Example to disable a phy
echo 0 > /sys/class/phy3:0/enable

Example to enable the same phy
echo 1 > /sys/class/phy3:0/enable

Example to change the link rate to 1.5
#echo "1.5 Gbit" > /sys/class/phy3:0/maximum_linkrate
#cat /sys/class/phy3:0/negotiated_linkrate
1.5 Gbit

Example to change the link rate to 3.0
#echo "3.0 Gbit" > /sys/class/phy3:0/maximum_linkrate
#cat /sys/class/phy3:0/negotiated_linkrate
3.0 Gbit

Example to change the link rate to 6.0
#echo "6.0 Gbit" > /sys/class/phy3:0/maximum_linkrate
#cat /sys/class/phy3:0/negotiated_linkrate
6.0 Gbit

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:42 -06:00
Kashyap, Desai f7c95ef02b [SCSI] mpt2sas: Added raid transport support
Adding support for raid transport layer.  This will provide sysfs attributes
containing raid level, state, and resync rate.

MPT2SAS module will select RAID_ATTRS.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:41 -06:00
Kashyap, Desai 22c88425e0 [SCSI] mpt2sas: Use compat_ptr to setup the pointer compatibility.
On ppc64, an 32bit application was failing due to data buffers not being
copied properly from user to kernel memory.  The problem due to improper
conversion of 32 to 64 bit pointers.  The fix is to use compat_ptr to
setup the pointer compatibility in the routine _ctl_compat_mpt_command.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:40 -06:00
Kashyap, Desai e75b9b6d9d [SCSI] mpt2sas: Set ioc->fwfault_debug to the cmd line option mpt2sas_fwfault_debug.
(1) change the formentioned string from logging_level to fwfault_debug
(2) set ioc->fwfault_debug to the command line option mpt2sas_fwfault_debug
setting at driver load time.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:39 -06:00
Kashyap, Desai 6846e75cdf [SCSI] mpt2sas: User resource_size_t instead of unsigned long
Use resource_size_t to define the type resource for the system interface
register set.
The existing implementation was using "unsigned long" which would be 32 bit
in 32 bit OS.  If 32 bit OS is using 64 bit physical
address space for the system interface register set, we need to shift to
using resource_size_t which takes care of physical address space.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:38 -06:00
Kashyap, Desai b2ff36ba19 [SCSI] mpt2sas: Return -ENODATA on IOCTL timeout
The driver was modified to return -ENODATA when there is a timeout
via ioctl path.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:38 -06:00
Kashyap, Desai d7384b28af [SCSI] mpt2sas: Delete volume before HBA detach.
The driver hangs when doing `rmmod mpt2sas` if there are any
IR volumes present.The hang is due the scsi midlayer trying to access the
IR volumes after the driver releases controller resources.  Perhaps when
scsi_remove_host is called,the scsi mid layer is sending some request.
This doesn't occur for bare drives becuase the driver is already reporting
those drives deleted prior to calling mpt2sas_base_detach.
To solve this issue, we need to delete the volumes as well.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 18:19:37 -06:00
James Bottomley 0f88009d5c [SCSI] scsi_transport_sas: add support for transport layer retries (TLR)
The mpt2sas driver wants to use transport layer retries (TLR) so the
simplest thing to do seems to be to add the enabling flags and checks
to the SAS transport class, since they're a SAS specific protocol
feature.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-08 17:15:19 -06:00
George Kadianakis 8605c46c17 [SCSI] lpfc: restore MSI-X/MSI support
A Gentoo bug report [1] showed that as of 2.6.31 lpfc only uses INTx interrupts.
This patch restores lpfc's ability to support MSI-X/MSI interrupts that the
"Addition of SLI4 Interface - Base Support" patch [2] broke.
It reestablishes MSI-X as the default interrupt method and in case MSI-X is not
supported lpfc_sli{4,}_enable_intr fallbacks to MSI and then to INTx.

[1]: http://bugs.gentoo.org/show_bug.cgi?id=296319
[2]: commit da0436e915

[James Smart:
Background:
Nothing Broke. This was intended.

We had originally enabled MSI-X by default, but in qualification within the
last 12 months, we encountered a major catch-22:

There were at least 4 platforms, from 2 major OEMs, that :
- Say they support MSI-X - platform routines work and act as if they do.
- We enable it, generate a test interrupt to check they really do deliver it,
and it works.
- But shortly after attachment, the system hangs or loses interrupts,
resulting in a bad system behavior.

Given the distro's picking up the 2.6.32 kernel, we had to stick with a
default of MSI-X off, with user-enabled MSI-X as these platforms couldn't get
fixed.

However, we're also now encountering platforms that require MSI-X and never
INTx, so we must change. It's desired also for also for performance reasons.

So - now (2.6.33) is the right time to re-enable MSI-X by default.
]
[jejb: fix up comment on default values]

Signed-off-by:  George Kadianakis <desnacked@gmail.com>
Acked-by: James Smart  <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 16:51:59 -06:00
Giridhar Malavali e8a392444d [SCSI] qla2xxx: Update version number to 8.03.02-k0.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 16:51:59 -06:00
Giridhar Malavali f8ac60855e [SCSI] qla2xxx: Remove firmware hint for 81xx parts.
Firmware is loaded from flash for these ISP types.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 16:51:58 -06:00
Giridhar Malavali 9a069e1967 [SCSI] qla2xxx: Add BSG support for FC ELS/CT passthrough and vendor commands.
[jejb: fixed printk casting issues]
Signed-off-by: Sarang Radke <sarang.radke@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 16:51:05 -06:00
Joe Carnuccio 90a86fc05f [SCSI] qla2xxx: Enhance EEH support and enable AER support.
qla2xxx: EEH added call to pci_restore_state.
qla2xxx: EEH added delay in slot reset routine.
qla2xxx: EEH moved call to pci_save_state(), see (1).
qla2xxx: EEH additional changes for RHEL5.5.
qla2xxx: EEH added function call, removed function call, see (2).

(1) In qla2xxx_probe_one the call to pci_save_state() has been
    moved to after the call to qla2xxx_request_irqs().

(2) Add call to pci_disable_pcie_error_reporting() in remove_one.
    Delete call to pci_cleanup_aer_uncorrect_error_status() in pci_resume.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:26 -06:00
Jayamohan Kallickal 9db0fb3aa4 [SCSI] be2iscsi: Enable TEXT req resp
This patch enables TEXT Request / Response for the driver

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:25 -06:00
Jayamohan Kallickal aa874f0738 [SCSI] be2iscsi: Fixing initialization of can_queue
This patch fixes can_queue being uninitiallized since it
was done before beiscsi_get_params was called.

Thanks to Mike Christie for identifying this

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:24 -06:00
Jayamohan Kallickal da7408c800 [SCSI] be2iscsi: The session failure only when Link Goes down
This fixes a situation where the sessions were being killed whenever
LinkUP is notified rather than LinkDown

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:24 -06:00
Jayamohan Kallickal 756d29c8c7 [SCSI] be2iscsi: Enable async mode for mcc rings
This patches enables async mode for mcc rings so that
multiple requests can be queued.

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:23 -06:00
Jayamohan Kallickal 51a462500f [SCSI] be2iscsi: No requirement for endianess change for data_count
This patch removes the endianess change that was wrongly
added for data_count

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:22 -06:00
Jayamohan Kallickal 0ecb0b45f2 [SCSI] be2iscsi: decide which requests need completion
This patch decides whether ack based completion is required or not

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:22 -06:00
Jayamohan Kallickal d7aea67b8a [SCSI] be2iscsi: Use of opcode in beiscsi_alloc_pdu
This patch enables use of opcode that is passed in

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:21 -06:00
Jayamohan Kallickal 2807afb741 [SCSI] be2iscsi:moved pci_set_drvdata to inside beiscsi_hba_alloc
This patch moves pci_set_drvdata to inside beiscsi_hba_alloc

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:20 -06:00
Jayamohan Kallickal 7bd6e25cdb [SCSI] be2iscsi: Added opcode for LOGOUT_RSP, TEXT_RESP, TMFUNC_RSP
This patch adds opcodes in thecompletion path that were
missed out earlier

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:19 -06:00
Jayamohan Kallickal d543148883 [SCSI] be2iscsi: Link Wrb with next Wrb
This patch will link the current allocated wrb with the next
 wrb that will be allocated. This is a requirement from the chip.

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:19 -06:00
Jayamohan Kallickal c24622886f [SCSI] be2iscsi: Move freeing of resources to stop_conn
We need to hold on to ep resources untill invalidate and
  close connection are completed

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:18 -06:00
Jayamohan Kallickal 7da5087971 [SCSI] be2iscsi: Use start cid and number of cid and icd from FW
This patch enablesi be2iscsi to use the start number and number
 of cids/icd provided by FW rather than hard coded values.

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:17 -06:00
Dave Jones 1fe6dbf4d0 [SCSI] gdth: Convert to use regular kernel types.
converted using this script..

 perl -p -i -e 's|ulong32|u32|g' drivers/scsi/gdth*
 perl -p -i -e 's|ulong64|u64|g' drivers/scsi/gdth*
 perl -p -i -e 's|ushort|u16|g' drivers/scsi/gdth*
 perl -p -i -e 's|unchar|u8|g' drivers/scsi/gdth*
 perl -p -i -e 's|ulong|unsigned long|g' drivers/scsi/gdth*
 perl -p -i -e 's|PACKED|__attribute__((packed))|g' drivers/scsi/gdth*

sha1sum of the generated code was identical before and after.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:16 -06:00
Douglas Gilbert e7efe5932b [SCSI] skip sense logging for some ATA PASS-THROUGH cdbs
Further to the lsml thread titled:
"does scsi_io_completion need to dump sense data for ata pass through (ck_cond =
1) ?"

This is a patch to skip logging when the sense data is
associated with a SENSE_KEY of "RECOVERED_ERROR" and the
additional sense code is "ATA PASS-THROUGH INFORMATION
AVAILABLE". This only occurs with the SAT ATA PASS-THROUGH
commands when CK_COND=1 (in the cdb). It indicates that
the sense data contains ATA registers.

Smartmontools uses such commands on ATA disks connected via
SAT. Periodic checks such as those done by smartd cause
nuisance entries into logs that are:
    - neither errors nor warnings
    - pointless unless the cdb that caused them are also logged

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:16 -06:00
Dan Carpenter 5d7ebb9c7a [SCSI] FlashPoint: fix off by one tests
The check on MAX_SCSI_TAR should be >= instead of > or we could go past the
end of the array.

Joe Eykholt aslo correctly points out that the check on MAX_LUN should be
>= as well.  That matches with how it is used in the rest of the file.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:14 -06:00
Jiri Slaby 0ed8570ef4 [SCSI] cxgbi3: remove unnecessary NULL test
Stanse found that c3cn is poked many times around in
cxgb3i_conn_pdu_ready, there is no need to check if it is NULL.

Remove the test.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Karen Xie <kxie@chelsio.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:14 -06:00
Julia Lawall 3dbf6c0012 [SCSI] pm8001: Use kzalloc for allocating only one thing
Use kzalloc rather than kcalloc(1,...)

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
@@

- kcalloc(1,
+ kzalloc(
          ...)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by:Jack Wang <jack_wang@usish.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:13 -06:00
Kashyap, Desai 4ffd005a4d [SCSI] mptfusion: Bump version 03.04.14
Version upgrade to 3.04.14.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:13 -06:00
Kashyap, Desai de81562f2f [SCSI] mptfusion: corrected if condition check for SCSIIO and PASSTHROUGH commands
Modified the function type check to verify it is not
MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH or MPI_FUNCTION_SCSI_IO_REQUEST.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:12 -06:00
Kashyap, Desai 64e155adc2 [SCSI] mptfusion: block device when target is being removed by FW
Add support to set the sdev state to SDEV_BLOCK during device removal
to stop IOs comming to the deleting driver immediately.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:11 -06:00
Kashyap, Desai e0f553ab58 [SCSI] mptfusion: Added sysfs expander manufacture information at the time of expander add.
Added new function mptsas_exp_manufacture_info, which will
obtain the REPORT_MANUFACTURING, and fill the details into the
sas_expander_device object when the expander port is created.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:11 -06:00
Kashyap, Desai 65f89c2396 [SCSI] mptfusion: Added MPI_SCSIIO_CONTROL_HEADOFQ priority
There is a 'ioprio' field in the BIO and the Request structure.
check this priority field and set MPI_SCSIIO_CONTROL_HEADOFQ
to pass down I/O priority.
An enhancement to the LSI Disk Array Controller firmware is being
developed to look at the Head Of Queue bit to allow I/Os with the HOQ bit
set to be processed before I/Os which do not have the HOQ bit set.
In order to set the HOQ bit, the mpt fusion driver  needs to look at the
'ioprio' field in the request structure associated with the scsi command.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:10 -06:00
Finn Thain 02507a80b3 [SCSI] mac_esp: fix PIO mode, take 2
The mac_esp PIO algorithm no longer works in 2.6.31 and crashes my Centris
660av. So here's a better one.

Also, force async with esp_set_offset() rather than esp_slave_configure().

One of the SCSI drives I tested still doesn't like the PIO mode and fails
with "esp: esp0: Reconnect IRQ2 timeout" (the same drive works fine in
PDMA mode).

This failure happens when esp_reconnect_with_tag() tries to read in two
tag bytes but the chip only provides one (0x20). I don't know what causes
this. I decided not to waste any more time trying to fix it because the
best solution is to rip out the PIO mode altogether and use the DMA
engine.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:10 -06:00
Hannes Reinecke f2818663c8 [SCSI] scsi_transport_fc: Remove capping from dev_loss_tmo
Currently dev_loss_tmo is capped by SCSI_DEVICE_BLOCK_MAX_TIMEOUT.
This causes problem with multipathing when the 'no_path_retry' setting
exceeds the dev_loss_tmo setting, as then the system might run into
a deadlock when all paths have been removed temporarily for longer
than dev_loss_tmo.
The principal reasons for the capping has been that we should
not allow a remote port to remain in status 'blocked' indefinitely,
so the capping is there to ensure that the port status is being reset
eventually.
However, the fast_io_fail_tmo will also move the remote port out of
the 'blocked' state, so for any HBA driver implementing both the
capping should really be on the fast_io_fail_tmo, and not on the
dev_loss_tmo.
This patch implements just that, ie the fast_io_fail_tmo is capped
to SCSI_DEVICE_BLOCK_TIMEOUT and the capping is removed from
dev_loss_tmo when fast_io_fail_tmo is set.
This allows us to synchronize the dev_loss_tmo setting to the
'no_path_retry' setting from multipathing thus avoiding the deadlock.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: James Smart  <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-01-18 10:48:09 -06:00