Make sure all pending I/O including any in the libsas error handler
process is cleaned-up.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
In the case of I/O requests being failed because of a required device
reset condition, set the response and status to indicate an I/O failure.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Since libsas takes the domain device sata_dev.ap->lock before submitting
a task, error completions in the submit path for SATA devices must
unlock/relock when completing the sas_task back to libsas.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The request may be in the "aborted" or the "completed" state when
performing a task management operation on it.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
In the case where a SAS or SATA LUN reset TMF is built a NULL pointer
dereference occurred because of the (unused) callback data pointer.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Added a request "dead" state for use when a termination wait times-out.
isci_terminate_pending_requests now detaches the device's pending list
and terminates each entry on the detached list.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Since the request structure contains a pointer to the completion to be
used if the request is being aborted or terminated, there is no reason
to pass the completion as a pointer to isci_terminate_request_core().
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Made sure the device ready check accounts for all states.
Moved the aborted task check into the loop of pulling task requests
off of the submitted list.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
[remove host and device starting state checks]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The pointer to the core representation of a request is marked NULL at
completion, but we need to save the i/o tag for task management.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
[revise changelog]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
If there is a pending device reset, the I/O is used to accomplish the reset by setting the
RESET bit in the task status, and then putting the task into the error handler
path using sas abort task.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Corrected use of the request state_lock in the completion callback.
In the case where an abort (or reset) thread is trying to terminate an
I/O request, it sets the request state to "aborting" (or "terminating")
if the state is still "starting". One of the bugs was to never set the
state to "completed". Another was to not correctly recognize the
situation where the I/O had completed but the sas_task was still pending
callback to task_done - this was typically a problem in the LUN and
device reset cases.
It is now possible that we leave isci_task_abort_task() with
request->io_request_completion pointing to localy allocated
aborted_io_completion struct. It may result in a system crash.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Maciej Trela <Maciej.Trela@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Changes to move management of the reqs_in_process entry for the request here.
Made changes to note when the task is already in the abort path and
cannot be completed through callbacks.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
In the condition where outstanding I/Os are being cleaned from the device
requests in process list, the cleanup function needs to check that the
request is actually a sas-task and not a task management function.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The remote_device_lock is currently used to protect a controller global
resource (RNCs), but the remote_device_lock is per-port.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Until we synchronize against device removal this limits the damage of
use after free bugs to the driver's own objects. Unless we implement
reference counting we need to ensure at least a subset of a remote
device is valid at all times. We follow the lead of other libsas
drivers that also preallocate devices.
This also enforces maximum remote device accounting at the lldd layer,
but the core may still run out of RNC's before we hit this limit.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Replace the device completion infrastructure with the controller wide
event queue. There was a potential for the stop and ready notifications
to corrupt each other, now that cannot happen.
The stop pending flag cannot be used until devices are statically
allocated. We temporarily need to maintain a completion to handle
waiting for an object that has disappeared, but we can at least stop
scribbling on freed memory.
A future change will also get rid of the "stopping" state as it should
not be exposed to the rest of the driver.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The midlayer is already throttling i/o in the places where host_quiesce
was trying to prevent further i/o to the device. It's also problematic
in that it holds a lock over GFP_KERNEL allocations.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
It belies the fact that isci_remote_device and scic_sds_remote_device
are one in same object with the same lifetime rules.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
isci_host_by_id() should have been a clue that an array would have been
a simpler approach.
Reported-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Now that phys_to_virt() and virt_to_phys() have been removed we are no
longer violating the dma mapping (or kmap apis).
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Ross says:
"The memory allocation for these requests doesn’t take into account the
additional memory needed when the code in
scic_sds_s[mst]p_request_assign_buffers() shifts the struct
scu_task_context so that it is cache line aligned:
In an example from my machine, total buffer that I’ve given to SCIC goes
from 0x410024566f84 to 0x410024567308. From this same example, this
call shifts my task_context_buffer from 0x410024567208 to
0x410024567240.
This means that the task_context_buffer that used to range from
0x410024567208 to 0x410024567308 instead now goes from 0x410024567240 to
0x410024567340.
When the memset() call at the end of scic_task_request_construct()
clears out this task_context_buffer, it does so from 0x410024567240 to
0x410024567340, effectively killing whatever buffer follows this
allocation in memory."
djbw:
Use the kernel's PTR_ALIGN instead of
scic_sds_request_align_task_context_buffer() and SMP_CACHE_BYTES instead of
the local CACHE_LINE_SIZE definition.
TODO: These allocations really want to be better defined in a union rather
than opaque buffers carved up by macros.
Reported-by: Ross Zwisler <ross.zwisler@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
When aborting a task context we need to be sure that the hardware has acted on
this request (retrieved the task context) before invalidating the remote node
context. In the case of the "dummy" task context and remote node we do not
have the full state machine that goes through the complete tc abort and rnc
invalidate states. Instead we ensure the hardware has seen and acted on
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Moving some of the chattiness of warning messages to debug so only the Linux
system messages are shown.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Adding support for PHY_FUNC_LINK_RESET and PHY_FUNC_DISABLE. This allow the
sysfs knob enable (both 0 and 1) and link_reset to work properly.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Core reworks to support stopping and re-starting the controller, lays the
groundwork for phy disable / re-enable and fixes other bugs around port/phy
setup/teardown.
Signed-off-by: Pawel Marek <pawel.marek@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Observed that some devices return a d2h fis, treat like an sdb error fis.
Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
There is a condition whereby TCs (task contexts) can jump to the head of
the round robin queue causing indefinite starvation of pending tasks.
Posting a TC to a suspended RNC (remote node context) causes the
hardware to select that task first, but since the RNC is suspended the
scheduler proceeds to the next task in the expected round robin fashion,
restoring TC arbitration fairness.
Signed-off-by: Tomasz Chudy <tomasz.chudy@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Prepare the timer api for the arrival of dynamic creation and
destruction events from the core. It pretended to do this previously
but the core to date only used it in a static init-time only fashion.
This is an interim fix until a cleaner event queue can be developed.
1/ make all locking external to the api (add WARN_ONCE to verify)
2/ add a timer_destroy interface (to be used by the core)
3/ use del_timer_sync() prior to deallocating timer data
4/ delete the "timer_list" indirection, we only have timers allocated
for the isci_host
5/ fix detection of timer list allocation errors
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Undo the open coded and incorrect translation of the oem parameter sas
address to its libsas expected format.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Removed all callbacks in the deprecated.c. Core will call the appropriate
functions directly.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Renaming the callbacks to apparopriate event notify calls for the LLDD.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Remove abstraction for SG building and get rid of callbacks for getting
DMA memory mapping.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
We can copy the data directly to and from sg for SATA PIO read operations.
There is no reason to involve the hardware SGL. In the process we also need
to kmap the sg because we don't know where that can come from.
We also do to not call phys_to_virt(). The driver already has the information.
We can just calculcate the appropriate offets.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
These macros are not necessary. We can do 64bit math directly.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Sending aborts/resets to SAS/SATA targets in APC mode eventually causes
an assert in scic_sds_apc_agent_link_up(). We need to handle the hard reset
case for apc mode ports.
Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Update the SCI Core to comprehend the changes in the TC completion
codes from A0 to B0. Specifically, there isnew R_ER code
differences for command and data FISes.
Changes are as follows:
1) 0x16 now additionally indicates an R_ERR received for a COMMAND
FIS being sent to a SATA target. 0x16 for SSP still indicates a
NAK received for a COMMAND frame. Fix is to retry TC to be compliant
with SATA spec or ensure proper error handling of return value
(not spec compliant I don't believe).
2) 0x1B was previously called DONE_BREAK_RCVD for STP and
DONE_LL_ABORT_ERR for SSP. Now it is universally called
DONE_LL_ABORT_ERR. This is purely a superficial change.
3) 0x32 is no longer a reserved code. Now it indicates
DONE_CMD_SDMA_ERR for STP/SSP. There was a fatal error on the
SDMA for a command IU (includes Raw frames). Consider retry,
but at a minimum gracefully fail the request.
4) 0x33 is no longer a reserved code. Now it indicates
DONE_CMD_LL_ABORT_ERR for SSP. There was a break receivd
during transmission of a command IU. Consider retry, but
at a minimum gracefully fail the request.
Signed-off-by: Tomasz Chudy <Tomasz.Chudy@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Use the dynamic revision detection code in
scic_sds_phy_link_layer_initialization() and apply some coding style
fixups (long deref chains). The compile time max link rate setting is
removed in favor of honoring the user-parameter max.
Reported-by: Krzysztof Wierzbicki <Krzysztof.Wierzbicki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Add support for the following parameters in SCIC:
/**
* This field specifies the NOTIFY (ENABLE SPIN UP) primitive
* insertion frequency for this phy index.
*/
u32 notify_enable_spin_up_insertion_frequency;
/**
* This method specifies the number of transmitted DWORDs within which
* to transmit a single ALIGN primitive. This value applies regardless
* of what type of device is attached or connection state. A value of
* 0 indicates that no ALIGN primitives will be inserted.
*/
u16 align_insertion_frequency;
/**
* This method specifies the number of transmitted DWORDs within which
* to transmit 2 ALIGN primitives. This applies for SAS connections
* only. A minimum value of 3 is required for this field.
*/
u16 in_connection_align_insertion_frequency;
Signed-off-by: Krzysztof Wierzbicki <Krzysztof.Wierzbicki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
At init and RNC resume we need to touch every phy in a port to be sure
we have initialized STP properties in the case where port_index !=
phy_index. Also add some missing __iomem annotations.
Signed-off-by: Henryk Dembkowski <henryk.dembkowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The default should be 5us. The hardware encodes it in 256ns increments,
so the value should be 20 to approximate a 5us timeout.
Signed-off-by: Tomasz Chudy <Tomasz.Chudy@intel.com>
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
c99 the struct initializers:
1/ allows grep to consistently show method name associations. The
naming is mostly consistent (except when it isn't) so this guarantees
coverage of present and future exception cases.
2/ let's the compiler guarantee that the state table array entry
correlates with an actual state name and detect accidental reordering or
deletion of states.
/ allows default handler's to be identified easily
Signed-off-by: Jacek Danecki <Jacek.Danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Moved the firmware loading from per adapter to per PCI device. This should
prevent firmware from being loaded twice becuase of 2 SCU controller per
PCI device. We do have to do it per PCI device because request_firmware()
requires a struct device passed in.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The proc_name field in struct scsi_host_template is exported through sysfs and
allows userspace tools to identify the driver behind a particular SCSI host
controller.
Initialize this field so that userspace tools can easily identify isci host
controllers through sysfs.
Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This removes scic_controller_get_handler_methods and its
associated unused code.
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
[djbw: kill off the legacy handler, now that we have basic error isr support]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Some of the chain walks to get back to our dev are invalid.
isci_remote_device_change_state: delete rather than adding conditional deref
chain walking
isci_request_change_state: fix, it was being called too early
isci_request_ssp_io_request_get_lun: fix compile breakage hidden by ifdef DEBUG
Signed-off-by: Maciej Trela <maciej.trela@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Inform libsas of the linkrate of direct attached links.
Reported-by: Haavard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Polling the event queue during scan is an unneeded holdover from the
original driver.
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
[djbw: ensure we flush all port events and domain discovery]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The lldd actively disallows requests in the "starting" state. Retrying
or holding off commands in this state is sub-optimal:
1/ it adds another state check to the fast path
2/ retrying can cause libsas to give up
However, isci's ->lldd_dev_found() routine already waits for controller
start to complete before allowing further progress. Checking the
"starting" state in isci_task_execute_task and the isr is redundant and
misleading. Clean this up and introduce a controller-wide event queue
to start reeling in "completion" proliferation in the driver.
The "stopping" state cleanups are in a similar vein, rely on the the isr
and other paths being precluded from occurring rather than implementing
state checking logic.
Reported-by: Christoph Hellwig <hch@infradead.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The indirection is unecessary and broken in the current case that assigns the
handlers based on a not up-to-date pdev->msix_enabled value.
Route the handlers directly to the requisite core routines.
Todo: hook up error interrupt handling
Reported-by: Jeff Garzik <jeff@garzik.org>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This will be replaced by state machine tracepoints and should have been a part
of the logger removal.
Ran across scic_sds_port_decrement_request_count() which is an ugly macro
which silently hides accounting errors. Turn it into a WARN_ONCE to see if it
ever triggers.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Callbacks are already type unsafe, obfuscating things further by casting the
callback routine is less safe because now function argument number changes
will not be caught by the compiler.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Change names from upper to low letters
Signed-off-by: Henryk Dembkowski <henryk.dembkowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Remove duplicated license and header file includes that were leftover
from commit 4c1db2d0 "isci: consolidate core" (in the isci.git historical
branch).
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
scic_sds_stp_remote_device_ready_substate_handler_table[]
scic_sds_smp_remote_device_ready_substate_handler_table[]
c99 the struct initializers:
1/ allows grep to consistently show method name associations. The
naming is mostly consistent (except when it isn't) so this guarantees
coverage of present and future exception cases.
2/ let's the compiler guarantee that the state table array entry
correlates with an actual state name and detect accidental reordering or
deletion of states.
3/ allows default handler's to be identified easily
Signed-off-by: Henryk Dembkowski <henryk.dembkowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Change names from upper to low letters
Signed-off-by: Henryk Dembkowski <henryk.dembkowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
c99 the struct initializers (scic_sds_remote_device_state_handler_table[]):
1/ allows grep to consistently show method name associations. The
naming is mostly consistent (except when it isn't) so this guarantees
coverage of present and future exception cases.
2/ let's the compiler guarantee that the state table array entry
correlates with an actual state name and detect accidental reordering or
deletion of states.
3/ allows default handler's to be identified easily
Change names from upper to low letters
Cleanup empty lines
Signed-off-by: Henryk Dembkowski <henryk.dembkowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
We no longer use the loglevel parameter. Remove.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
[rebased after killing SCI_IO_REQUEST_DATA_DIRECTION]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
It's an unnecessary typedef that mirrors the kernel's enum
dma_data_direction.
Also cleanup some long variable names along the way.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Support for the up to 2x4-port 6Gb/s SAS controllers embedded in the
chipset.
This is a snapshot of the first publicly available version of the driver,
commit 4c1db2d0 in the 'historical' branch.
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci.git historical
Signed-off-by: Maciej Trela <maciej.trela@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
In certain circumstances, we can get an oops from a torn down device.
Most notably this is from CD roms trying to call scsi_ioctl. The root
cause of the problem is the fact that after scsi_remove_device() has
been called, the queue is fully torn down. This is actually wrong
since the queue can be used until the sdev release function is called.
Therefore, we add an extra reference to the queue which is released in
sdev->release, so the queue always exists.
Reported-by: Parag Warudkar <parag.lkml@gmail.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Fix kernel-doc warnings in scsi_proc.c:
Warning(drivers/scsi/scsi_proc.c:390): No description found for parameter 'dev'
Warning(drivers/scsi/scsi_proc.c:390): No description found for parameter 'data'
Warning(drivers/scsi/scsi_proc.c:390): Excess function parameter 's' description in 'always_match'
Warning(drivers/scsi/scsi_proc.c:390): Excess function parameter 'p' description in 'always_match'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Extend BSG infrastructure and add link diagnostics:
- Removed unnecessary copies in handling pass-through mbox cmds.
- Add embedded SLI_CONFIG support for BSG.
- Add multibuffer support.
- Implemented the setting up and tearing down Lancer FC device for performing
internal and external loopback diagnostic tests.
- Implemented the driver support for performing new link diagnostic tests
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
This patch adds support for hardware that returns resource ids via
extents rather than contiguous ranges.
[jejb: checkpatch.pl fixes]
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Add request-firmware support:
- Add support for request_firmware interface for INTF2 SLI4 ports.
- Add ability to reset SLI4 INTF2 ports.
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Extended hardware support and support dump images:
- Make the size to be MAILBOX_SYSFS_MAX (4096) so that it allows the maximum
sysfs binary access interface possible.
- Add ids and model names for new hardware
- Add capability of inducing SLI4 firmware dump obj file
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Miscellaneous Fixes and Corrections
- Remove the memset in the lpfc_sli4_remove_rpi_hdrs call.
- Correct swapping of SGE word 2 relative to offset value
- Reorganize CQ and EQ usage to comply with SLI4 Specification.
- Expand the driver to check the rn bit. Only detect an error if the error bit
is set and the RN bit is NOT set.
- If mailbox completion code is not success AND the mailbox status is success,
then and only then will the driver overwrite the mailbox status.
- When driver initializing device, if the device is on a PCIe bus, set
PCI's "needs fundamental reset" bit so that EEH uses fundamental reset
instead of hot reset for recovery.
- Prevent driver from using new WWN when changed in firmware (until driver
reload)
- When HBA reports maximum SGE size > 0xffffffff (infinite), override
with 0x80000000.
- Fixed potential missed SLI4 device initialization failure conditions.
- Added 100ms delay before driver action following IF_TYPE_2 function reset.
- Reverted patch to UNREG/REG on PLOGI to mapped/unmapped node.
- Add a check for the CVL received flag in the fcf inuse routine to avoid
unregistering the fcf if Devloss fires before Delay discover timer fires.
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
This allows a libsas driver to optionally provide a soft reset handler
for libata to drive. The isci driver allows software to control the
assertion/deassertion of SRST.
[jejb: checkpatch.pl fixes]
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Head off doomed-to-fail i/o in sas_queuecommand before sending it down
the ata path.
Before:
sd 7:0:0:0: [sdd] Synchronizing SCSI cache
ata8: no sense translation for status: 0x00
ata8: translated ATA stat/err 0x00/00 to SCSI SK/ASC/ASCQ 0xb/00/00
ata8.00: device reported invalid CHS sector 0
ata8: status=0x00 { }
ata8: no sense translation for status: 0x00
ata8: translated ATA stat/err 0x00/00 to SCSI SK/ASC/ASCQ 0xb/00/00
ata8.00: device reported invalid CHS sector 0
ata8: status=0x00 { }
ata8: no sense translation for status: 0x00
ata8: translated ATA stat/err 0x00/00 to SCSI SK/ASC/ASCQ 0xb/00/00
ata8.00: device reported invalid CHS sector 0
ata8: status=0x00 { }
sd 7:0:0:0: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 7:0:0:0: [sdd] Sense Key : Aborted Command [current] [descriptor]
sd 7:0:0:0: [sdd] Add. Sense: No additional sense information
sd 7:0:0:0: [sdd] Stopping disk
After:
sd 9:0:0:0: [sdd] Synchronizing SCSI cache
sd 9:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 9:0:0:0: [sdd] Stopping disk
sd 9:0:0:0: [sdd] START_STOP FAILED
sd 9:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
This is a cosmetic change as sata i/o can still leak to a gone device,
but this addresses the nominal hotplug case when releasing the target.
Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Commit 56dd2c06 "libsas: Don't issue commands to devices that have been
hot-removed" edited Darrick's original patch to remove setting 'gone' in
the sas_deform_port() path because that prevented scsi sync cache
commands from being issued when the driver was unloaded. However, this
allows true device gone notifications (as signaled port phy events) to
trigger sync cache commands to devices that are known to be unreachable.
Teach libsas which sas_deform_port() invocations are likely device gone
events.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
* 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
gfs2: Drop __TIME__ usage
isdn/diva: Drop __TIME__ usage
atm: Drop __TIME__ usage
dlm: Drop __TIME__ usage
wan/pc300: Drop __TIME__ usage
parport: Drop __TIME__ usage
hdlcdrv: Drop __TIME__ usage
baycom: Drop __TIME__ usage
pmcraid: Drop __DATE__ usage
edac: Drop __DATE__ usage
rio: Drop __DATE__ usage
scsi/wd33c93: Drop __TIME__ usage
scsi/in2000: Drop __TIME__ usage
aacraid: Drop __TIME__ usage
media/cx231xx: Drop __TIME__ usage
media/radio-maxiradio: Drop __TIME__ usage
nozomi: Drop __TIME__ usage
cyclades: Drop __TIME__ usage
* 'for-2.6.40/core' of git://git.kernel.dk/linux-2.6-block: (40 commits)
cfq-iosched: free cic_index if cfqd allocation fails
cfq-iosched: remove unused 'group_changed' in cfq_service_tree_add()
cfq-iosched: reduce bit operations in cfq_choose_req()
cfq-iosched: algebraic simplification in cfq_prio_to_maxrq()
blk-cgroup: Initialize ioc->cgroup_changed at ioc creation time
block: move bd_set_size() above rescan_partitions() in __blkdev_get()
block: call elv_bio_merged() when merged
cfq-iosched: Make IO merge related stats per cpu
cfq-iosched: Fix a memory leak of per cpu stats for root group
backing-dev: Kill set but not used var in bdi_debug_stats_show()
block: get rid of on-stack plugging debug checks
blk-throttle: Make no throttling rule group processing lockless
blk-cgroup: Make cgroup stat reset path blkg->lock free for dispatch stats
blk-cgroup: Make 64bit per cpu stats safe on 32bit arch
blk-throttle: Make dispatch stats per cpu
blk-throttle: Free up a group only after one rcu grace period
blk-throttle: Use helper function to add root throtl group to lists
blk-throttle: Introduce a helper function to fill in device details
blk-throttle: Dynamically allocate root group
blk-cgroup: Allow sleeping while dynamically allocating a group
...
The presense of a writeq() implementation on 32-bit x86 that splits the
64-bit write into two 32-bit writes turns out to break the mpt2sas driver
(and in general is risky for drivers as was discussed in
<http://lkml.kernel.org/r/adaab6c1h7c.fsf@cisco.com>). To fix this,
revert 2c5643b1c5 ("x86: provide readq()/writeq() on 32-bit too") and
follow-on cleanups.
This unfortunately leads to pushing non-atomic definitions of readq() and
write() to various x86-only drivers that in the meantime started using the
definitions in the x86 version of <asm/io.h>. However as discussed
exhaustively, this is actually the right thing to do, because the right
way to split a 64-bit transaction is hardware dependent and therefore
belongs in the hardware driver (eg mpt2sas needs a spinlock to make sure
no other accesses occur in between the two halves of the access).
Build tested on 32- and 64-bit x86 allmodconfig.
Link: http://lkml.kernel.org/r/x86-32-writeq-is-broken@mdm.bga.com
Acked-by: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Kashyap Desai <Kashyap.Desai@lsi.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Ravi Anand <ravi.anand@qlogic.com>
Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Acked-by: James Bottomley <James.Bottomley@parallels.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
pcmcia: Make struct pcmcia_device_id const, sound drivers edition
staging: pcmcia: Convert pcmcia_device_id declarations to const
pcmcia: Convert pcmcia_device_id declarations to const
pcmcia: Make declaration and uses of struct pcmcia_device_id const
pcmcia/sa1100: put sa11x0_pcmcia_hw_init[] to .devinit.data
Commit 1292500b replaced
"=m" (*field) : "1" (*field)
with
"=m" (*field) :
with comment "The following patch fixes it by using the '+' operator on
the (*field) operand, marking it as read-write to gcc."
'+' was actually forgotten. This really puts it.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <jbottomley@parallels.com>
drivers/scsi/osst.c: In function '__os_scsi_tape_open':
drivers/scsi/osst.c:4705: warning: ISO C90 forbids mixed declarations and code
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Index i was already used in the outer loop. Fixes a potentially-infinite
loop.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Willem Riede <osst@riede.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
In error recovery, most scsi error recovery stages will send a TUR command
for every bad command when a driver's error handler reports success. When
several bad commands to the same device, this results in a device
being probed multiple times.
This becomes very problematic if the device or connection is in a state
where the device still doesn't respond to commands even after a recovery
function returns success. The error handler must wait for the test
commands to time out. The time waiting for the redundant commands can
drastically lengthen error recovery.
This patch alters the scsi mid-layer's error routines to send test commands
once per device instead of once per bad command. This can drastically
lower error recovery time.
[jejb: fixed up whitespace and formatting]
Signed-of-by: David Jeffery <djeffery@redhat.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Some kernel transport drivers unconditionally disable
retrieval of the Caching mode page. One such for example is
the BBB/CBI transport over USB. Such a restraint is too
harsh as some devices do support the Caching mode
page. Unconditionally enabling the retrieval of this mode
page over those transports at their transport code level may
result in some devices failing and becoming unusable.
This patch implements a method of retrieving the Caching
mode page without unconditionally enabling it in the
transports which unconditionally disable it. The idea is to
ask for all supported pages, page code 0x3F, and then search
for the Caching mode page in the mode parameter data
returned. The sd driver already asks for all the mode pages
supported by the attached device by setting the page code to
0x3F in order to find out if the media is write protected by
reading the WP bit in the Device Specific Parameter
field. It then attempts to retrieve only the Caching mode
page by setting the page code to 8 and actually attempting
to retrieve it if and only if the transport allows it.
The method implemented here is that if the transport doesn't
allow retrieval of the Caching mode page and the device is
not RBC, then we ask for all pages supported by setting the
page code to 0x3F (similarly to how the WP bit is retrieved
above), and then we search for the Caching mode page in the
mode parameter data returned.
With this patch, devices over SATA, report this (no change):
Oct 22 18:45:58 localhost kernel: sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/465 GiB)
Oct 22 18:45:58 localhost kernel: sd 0:0:0:0: Attached scsi generic sg0 type 0
Oct 22 18:45:58 localhost kernel: sd 0:0:0:0: [sda] Write Protect is off
Oct 22 18:45:58 localhost kernel: sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
Oct 22 18:45:58 localhost kernel: sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Smart devices report their Caching mode page. This is a
change where we'd previously see the kernel making
assumption about the device's cache being write-through:
Oct 22 18:45:58 localhost kernel: sd 6:0:0:0: Attached scsi generic sg2 type 0
Oct 22 18:45:58 localhost kernel: sd 6:0:0:0: [sdb] 610472646 4096-byte logical blocks: (2.50 TB/2.27 TiB)
Oct 22 18:45:58 localhost kernel: sd 6:0:0:0: [sdb] Write Protect is off
Oct 22 18:45:58 localhost kernel: sd 6:0:0:0: [sdb] Mode Sense: 47 00 10 08
Oct 22 18:45:58 localhost kernel: sd 6:0:0:0: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA
And "dumb" devices over BBB, are correctly shown not to
support reporting the Caching mode page:
Oct 22 18:49:06 localhost kernel: sd 7:0:0:0: [sdc] 15663104 512-byte logical blocks: (8.01 GB/7.46 GiB)
Oct 22 18:49:06 localhost kernel: sd 7:0:0:0: [sdc] Write Protect is off
Oct 22 18:49:06 localhost kernel: sd 7:0:0:0: [sdc] Mode Sense: 23 00 00 00
Oct 22 18:49:06 localhost kernel: sd 7:0:0:0: [sdc] No Caching mode page present
Oct 22 18:49:06 localhost kernel: sd 7:0:0:0: [sdc] Assuming drive cache: write through
Version 2 adds this:
Some devices don't support page code 0x3F, and others require a
fixed transfer length of 192 bytes. This single commit includes a
patch by Alan Stern which fixes this.
Reported-and-tested-by: Richard Senior <richard@r-senior.demon.co.uk>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Luben Tuikov <ltuikov@yahoo.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Modified the event coalescing code for iSCSI offload to combat both
corner cases and optimize performance as follows:
1. Added mechanism to loop back a second time to process any leftover
CQEs that was generated by the hardware during the time the driver is
busy processing previous CQEs in the bh. This not only helps the
performance but also fixes the corner case when no more CQEs are being
generated in the pipeline; so those leftover CQEs will get a a chance
to be processed.
2. Added ARM_CQE_FP to distinguish between fast path arming versus
slow path arming. This change will guarantee that the CQEs will
always get a chance to be re-armed during fast path completions.
3. Removed the inline event coalescing division for perf optimization.
Also fixed a division-by-zero error when the event_coal_div module
param was set to 0.
4. Changed the default SQ WQEs size from 256 to 128 to match chip
default.
5. Changed the cmd_per_lun from 32 to 24.
Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Modified the 10s wait time for inflight offload connections to
advance to the next state to 2s based on test result.
Modified the 20s shutdown timeout to 30s based on test result.
Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <jbottomley@parallels.com>
The number of chip's internal command cell, which is use to generate
SCSI cmd packets to the target, was not initialized correctly by
the driver when the sq_size is changed from the default 128.
This, in turn, will create a problem where the chip's transmit pipe
will erroneously reuse an old command cell that is no longer valid.
The fix is to correctly initialize the chip's command cell upon setup.
Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Since queue_work does not requeue, there is no need to check
if a work is in progress using the AF_DPC_SCHEDULED flag.
queue_work would return if work is pending without adding the
work, do_dpc would again get invoked from qla4xxx_timer if
there is still DPC flags set.
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Corrected logic to don't check for F/W is alive if reset is already
in progress for ISP82XX
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Do not process interrupt unconditionally during mailbox processing which can
lead to spurious interrupt. Mailbox completion are now polled if interrupt are
disabled or wait for interrupt to come in if its enabled
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Complete the cmd if sense length is zero. For cases where sense
data spans across multiple iocb's by FW, we need to hold on to the
I/O (ha->status_srb != NULL) till we have processed them all and
copied the sense data from internal buffer to scsi_cmd sense buffer.
Signed-off-by: Prasanna Mumbai <prasanna.mumbai@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
- Added MBOX_ASTS_DUPLICATE_IP AEN handling.
- Update MBOX_AEN_REG_COUNT to 8 so that driver will save status
of all mbox registers in aen_q
Signed-off-by: Prasanna Mumbai <prasanna.mumbai@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
As of SBC3r26 WRITE SAME(10) supports the UNMAP bit.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Jeff Skirvin