we added support to set the deleted flag prior to device scan,
then clear the flag for responding devices, leaving the deleted flag only
set for missing devices. The problem is for internal generated host resets,
IO queues are not blocked at scsi mid layer level. IO will be continued
sent to driver, and driver will return SCSI_MLQUEUE_HOST_BUSY. The problem
is the driver checks for the deleted flag before it checks for the
controller being in reset, so there is a window where the driver would be
returning DID_NO_CONNECT for responding devices. This occurs during the
time between calling _scsih_prep_device_scan, and
_scsih_mark_responding_sas_device & _scsih_mark_responding_raid_device.
Fix the queuecommand entry point so ioc->shost_recovery flag sanity check is
given higher presidence then the device "deleted flag" check.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Added support in the driver to support EEH and
PCIe Advanced Error Recovery. This involves adding new
pci_error_handler interface for recovering the controller from PCI Bus
errors, such as SERR and PERR. Some tools are available for simulating
PCI errors in order to validate this interface:
http://www.kernel.org/pub/linux/utils/pci/aer-inject
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
After Host Reset firmware will have new list of device handles for the target.
Device handle refresh in driver is part of Rescan topology logic.
(See functions like *_search_responding_*). This needs to be done from Host
Reset context before making shost_recovery to 0. Currently it is done in
Firwmare event context, which may leads IO to a wrong device.
Now handler refresh is moved to HBA reset context.
Apart from this, Now driver will stop IOs for all device setting deleted
flag to 1 at the time of HBA Reset through _scsih_prep_device_scan.
It will only unblock devices, if devices has been found as part of RESCAN.
This way it will make more safe IO blocking at the time of HBA reset at
mpt2sas driver layer.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
RAID_SCSI_IO_PASSTHROUGH: Driver needs to be send the default
descriptor for RAID Passthru, currently its sending SCSI_IO descriptor.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Removed all the mutex's for ioc->tm_cmds.mutex, then created one
single mutex inside the function mpt2sas_scsih_issue_tm. This is the
single function used when sending task management. Also the sanity
checks required for scsi mid layer escalation were moved to inside the
same function because these checks need to be done while the mutex is
held. The ioc->tm_cmds.mutex inside the IOCTL branch is really not
required since there is another mutex in this code called for ctl_cmds
handling this sync.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
1. Fixes for little endian issues.
2. Now Debug info for Discovery event is more readable.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Now Driver will not treat NEEDS_INIT as failure. In addition to this,
the driver will now display message to describe the the access flags
when bits are set, so the end user can better understand failures.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Aded checks for shost_recovery flag for early return from function.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
bug fix in the handling of the internal device reset event
The reason code check in scsih_sas_device_status_change_event never
evaluates as true for internal device reset, hence driver never quiesce s IO
when firmware is sending a device reset. The fix is to change the
evaluate to:
if (event_data->ReasonCode !=
MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET &&
event_data->ReasonCode !=
MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET)
return;
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Setting handle to zero is not required before _scsih_remove_device.
Driver uses sas_device->handle reference in _scsih_remove_device.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
external host not connecting after controller reboot: The
problem is : devices are not coming back after having the cable
disconnected then reconnected. The problem is because the
driver/firmware device removal handshake is failing. Due to this failure,
the controller firmware is not sending out device add events when the target
is reconnected. This is root caused to a race in the driver/firmware device
removal algorithm. There is duplicate code in both interrupt and user
context; where target reset is being issue from user context path while
sas_iounit_control(OP_REMOVE) is being sent from interrupt context. An
active target_reset will fail the OP_REMOVE. To fix this problem, the
duplicate code has been removed from user context path.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
modified _scsih_sas_device_find_by_handle
so to handle the search on both list(device list and device_init_list)
Also, we moved the priority of the
search so the ioc->sas_device_list is done first. The
"sas_device_init_list" is only used during the 1st port enable, so its
unlikely there’s devices on it.
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>
Add the cancel_pending_work flag from the fw_event_work structure, and then to
set the flag during host reset, check the flag later from work threads
context and if cancel_pending_work_flag is set ingore those events.
Now Rescan after host reset is changed.
Added special task MPT2SAS_RESCAN_AFTER_HOST_RESET. This task will be queued
at the time of HBA reset. this task is treated as barrier. All work after
MPT2SAS_RESCAN_AFTER_HOST_RESET will be treated as new work and will be
server by callback handle. If host_recovery is going on while running RESCAN
task, it will wait for shos_recovery_done completion which will be called
from HBA reset DONE context.
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>
scsi_dma_map() returns -1 if an error occurred (zero means that the
command has no data). So the following current code can't catch an
error:
sges_left = scsi_dma_map(scmd);
if (!sges_left) {
sdev_printk(KERN_ERR, scmd->device, "pci_map_sg"
" failed: request for %d bytes!\n", scsi_bufflen(scmd));
return -ENOMEM;
}
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: "Desai, Kashyap" <Kashyap.Desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
For RAID volume sas_is_tlr_enabled call will hit BUG at
scsi_transport_sas.c:163, since raid volume
is not visible to sas transport layer.
Now Added check to make sure arg pass in sas_is_tlr_enabled() is not a volume.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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>
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>
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>
This patch modifies scsi_host_template->change_queue_depth so that
it takes an argument indicating why it is being called. This will be
used so that if a LLD needs to do some extra processing when
handling queue fulls or later ramp ups, it can do so.
This is a simple port of the drivers setting a change_queue_depth
callback. In the patch I just have these LLDs adjust the queue depth
if the user was requesting it.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
[Vasu.Dev: v2
Also converted pmcraid_change_queue_depth and then verified
all modules compile using "make allmodconfig" for any new build
warnings on X86_64.
Updated original description after combing two original
patches from Mike to make this patch git bisectable.]
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
[jejb: fixed up 53c700]
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
(1) target resets are sending link change rate events with no link rate
change -> thus said the driver was modified so when there is no link rate
change, we don't need to call mpt2sas_transport_update_links nor
_scsih_ublock_io_device.
(2) There were changes made in _scsih_sas_topology_change_event_debug to
change the debug strings so they are more clear. Also the link rate change
information was added to display the new and previous link rate.
for the MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST event when the ExpStatus is
set to zero, display "responding" instead of "unknown status".
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
(1) Added new function _scsih_ir_shutdown. This function will issue the
MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED request via
MPI2_FUNCTION_RAID_ACTION. The function will wait 10 seconds for reply
message frame, then print out the ioc status and loginfo. This function is
only called when there are raid volumes present.
(2) Add shutdown callback in the struct pci_driver object scsih_driver. This
will be called only when the system is shutting down. From this function, we
will call _scsih_ir_shutdown mentioned above.
(3) Add support in _scsih_remove to call _scsih_ir_shutdown. The function
_scsih_remove will be called when the driver is unloaded (and system is
still running).
scsih internal command contex is added to send internal message frames
from mpt2sas_scsih.c.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
When receiving the MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET event,
the driver will set the tm_busy flag in the sdev private host data, When
tm_busy flag is set, the driver will return SCSI_MLQUEUE_DEVICE_BUSY,
effectly freezing the IO to the device. The tm_busy flag is cleared with the
MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET event.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
(1) EEDP(End to End data protection) was not working. This was due to not
setting EEDP BlockSize and Flags to little endian format in the message
frame.
(2) Some expander sysfs attributes were not getting set properly. The sas
format was not getting set due to endian issues with sas_format field in the
struct rep_manu_reply. Since sas_format was not set properly, the
component_vendor_id, component_revision_id, and component_id were not set.
(3) In _transport_smp_handler: we don't need to convert the smid from little
endian to cpu prior to calling mpt2sas_base_free_smid, because its allready
in cpu format. (4) Some loginfos and ioc status were not xonverted from
little endian to cpu.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
cpu_to_le64 when calculating the physical dma address. This will properly
handle endianess on big endian systems. The return value of this function
was changed from dma_addr_t to __le64. Remove the typecasting of u32 when
setting the SenseBufferLowAddress, since its already in __le32 format.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
1 Its observed that the OS was sending request to the driver after it had been
put into blocking state, so the driver was modified to return
SCSI_MLQUEUE_DEVICE_BUSY.
2. Driver will return DID_TRANSPORT_DISRUPTED when sdev is haivng nexus loss.
This occurrs when sdev is blocked, between the
MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING and
MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING events.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
(1) for the MPI2_EVENT_IR_OPERATION_STATUS event, add support to print
"background init" or "make data consistent" for debugging purposes. If the
RAIDOperation is set to a value not defined, then don't print anything
(2) for the MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE event, add support to print
"expander reduced functionality" and "expander reduced functionality
complete", which are new events.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Added sanity check in _scsih_change_queue_depth to limit the max_depth to 32
for SATA devices. This is only for physical devices not part of a volume.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Added command line option and shost sysfs attribute called
mpt2sas_fwfault_debug. When enduser writes a "1" to this parameter, this
will enable support in the driver for debugging firmware timeout related
issues. This handling was added in three areas (a) scsi error handling
callback called task_abort, (b) IOCTL interface, and (c) other timeouts that
result in diag resets, such as manufacturing config pages. When this
support is enabled, the driver will provide dump_stack to console, halt
controller firmware, and panic driver. The end user probably would want to
setup serial console redirection so the dump stack can be seen.
Here are the three methods for enable this support:
(a) # insmod mpt2sas.ko mpt2sas_fwfault_debug=1
(b) # echo 1 > /sys/module/mpt2sas/parameters/mpt2sas_fwfault_debug
(c) # echo 1 > /sys/class/scsi_host/host#/fwfault_debug (where # is
the host number)
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Add support in the driver to check for valid response info in the scsi
state, then check to see if the response code is
MPI2_SCSITASKMGMT_RSP_INVALID_FRAME; when this condition occurrs, the driver
will return DID_SOFT_ERROR. A return code of DID_SOFT_ERROR will result in
a retry at the scsi-mid layer level. An additional change added to obtain
the response code from the 1st byte of the response info instead of last.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This handles the case where driver receives a expander removal event while
it is in the middle of processing an expander add event. The existing
implementation will stop processing futher device adds when a expander
delete arrives on top of add expander add. Due to a sanity check in the
driver, the devices there were not added, were never handshaked to firmware
with the device removal handshake protocal. Since the driver didnt' do the
handshake, the controller never provide further add events. To fix this
issue, the sanity check was removed so the driver will always do the device
removal handshake protocal.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
The device driver was not handling updating device handles in all cases
across diag resets. To fix this issue, the driver is converted to using sas
address instead of handle as a lookup reference to the parent expander or
sas_host. Also, for both expanders and sas host, the phy handle will be one
unique handle. In the sas host case, the phy handle can be different for
every phy, so the change is to set the handle to the handle of the first
phy; every phy will be one single sas address(phy 0) instead of a different
sas address for every phy(previous implementation). So making one consistent
sas address for all the direct attachedports to the sas host, will make it
better user experience when using udev /dev/disk/by-path dev nodes
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Add support to process device removal events when the phy status is set to
MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
(1) Added three new functions to handle sending target resest and OP_REMOVE
from interrupt time, they are _scsih_tm_tr_send, _scsih_tm_tr_complete, and
_scsih_sas_control_complete. This code will create a link list of pending
target resets if there is no more available request in the hipriority
request queue. The list is stored in ioc->delayed_tr_list.
(2) All callback handler return type is changed from void to u8.
Now _base_interrupt will check for return type of callback handlers to
take decision of message frame is already freed or not.
In genral,
Return 1 meaning mf should be freed from _base_interrupt
0 means the mf is freed from function.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
1) create a pool of high priority message frames in the region of memory
between message frames and chains. The modifications are in
_base_allocate_memory_pools. Also create a seperate pool of memory for
internal commands located near the same region of memory. The pool of high
priority message frames is restriced by the facts->HighPriorityCredit.
2) Create additional API for accessing request message frames. New function
mpt2sas_base_get_smid_hpr is for highpriority request. New function
mpt2sas_base_get_smid_scsiio for SCSI_IO, passing in the scsi command
pointer. The mpt2sas_base_get_smid function is for requesting internal
commands.
3) Added new function _base_get_cb_idx to obtain the callback
index from one of the three pools of request message frames.
4) Removed wrapper functions _scsih_scsi_lookup_set and
_scsih_scsi_lookup_getclear. These were removed because this handling was
moved into mpt2sas_base_get_smid_scsiio and mpt2sas_base_free_smid.
5) The function mpt2sas_base_free_smid is modified so the request message
frames are put back on one of the three pools of request message frames.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Update the copyright year to 2009 through out the code.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Drivers header are updated to the MPI2 REV K headers.
Renamed VF_ID to msix_index in all call back handlers.
VF_ID is removed from all request descriptor.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Cleaned up base_interrupt routine to be more effiecent.
Deleted about a third of the config page API by moving redundant code from all
the calling functions to _config_request.
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>
This patch modifies the slave_configure callback so the messages that get sent
to system log for RAID1E volumes contain the string "RAID10" instead of
"RAID1E". These messages contain information regarding what kind of scsi device
is being added. Certain OEMS can enable displaying the RAID10 string instead of
RAID1E via manufacturing page 10. The driver will read this config page at
driver load time, then determine from the GenericFlags0 bits whether display
the RAID10 or RAID1E string, also even drive count is taken into consideration.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <Eric.moore@lsi.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Changing SDEV Running state from interrupt context. Previously It was
handle in work queue thread. With this change It will not wait for work
queue thread to execute scsih_ublock_io_device to put SDEV into Running
state. This will reduce delay for Device becoming RUNNING.
Modified this patch considering James comment "Not to change SDEV state
using scsi_device_set_state API, instead use scsi_internal_device_unblock
scsi_internal_device_block API"
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <Eric.moore@lsi.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Deleted the wrapper function called _scsih_link_change. This function was
implemented for compatibility reasons only, between different kernel versions.
Currently this function is no longer needed. The calling function are
converted to calling mpt2sas_transport_update_phy_link_change directly in the
transport layer.
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>
This patch renames the flag for indicating host reset from
ioc_reset_in_progress to shost_recovery. It also removes the spin locks
surrounding the setting of this flag, which are unnecessary. Sanity checks on
the shost_recovery flag were added thru out the code so as to prevent sending
firmware commands during host reset. Also, the setting of the shost state to
SHOST_RECOVERY was removed to prevent deadlocks, this is actually better
handled by the shost_recovery flag.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <Eric.moore@lsi.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Following host reset its possible that the controller firmware could
assign new handles for devices, as well as adding or deleting devices. There is
code in the driver that will rescan the topology folowing host reset; updating
device handles, and remove devices that are no longer responding. This patch
will improve the responsivness by moving this rescaning from the delayed hotplug
worker thread to immediately following the host reset.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <Eric.moore@lsi.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Fix oops ocurring at hibernation time. This oops was due to the firmware fault
watchdog timer still running after we freed resources. To fix the issue we need
to terminate the watchdog timer at hibernation time.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Inhibit 0x3117 loginfos - during cable pull, there are too many printks going
to the syslog, this is have impact on how fast the interrupt routine can handle
keeping up with command completions; this was the root cause to the config
pages timeouts.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
When a volume is activated, the driver will recieve a pair of ir config change
events to remove the foreign volume, then add the native.
In the process of the removal event, the hidden raid componet is removed from
the parent.When the disks is added back, the adding of the port fails becuase
there is no instance of the device in its parent.
To fix this issue, the driver needs to call mpt2sas_transport_update_links()
prior to calling _scsih_add_device. In addition, we added sanity checks on
volume add and removal to ignore events for foreign volumes.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
