Dan Williams [Fri, 1 Jul 2011 18:41:21 +0000 (11:41 -0700)]
isci: cleanup silicon revision detection
Perform checking per-pci device (even though all systems will only have
1 pci device in this generation), and delete support for silicon that
does not report a proper revision (i.e. A0).
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 1 Jul 2011 02:14:33 +0000 (19:14 -0700)]
isci: retire scic_sds_ and scic_ prefixes
The distinction between scic_sds_ scic_ and sci_ are no longer relevant
so just unify the prefixes on sci_. The distinction between isci_ and
sci_ is historically significant, and useful for comparing the old
'core' to the current Linux driver. 'sci_' represents the former core as
well as the routines that are closer to the hardware and protocol than
their 'isci_' brethren. sci == sas controller interface.
Also unwind the 'sds1' out of the parameter structs.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 1 Jul 2011 00:38:32 +0000 (17:38 -0700)]
isci: unify isci_host and scic_sds_controller
Remove the distinction between these two implementations and unify on
isci_host (local instances named ihost). Hmmm, we had two
'oem_parameters' instances, one was unused... nice.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Wed, 29 Jun 2011 20:09:25 +0000 (13:09 -0700)]
isci: unify isci_port and scic_sds_port
Remove the distinction between these two implementations and unify on
isci_port (local instances named iport). The duplicate '->owning_port' and
'->isci_port' in both isci_phy and isci_remote_device will be fixed in a later
patch... this is just the straightforward rename/unification.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Commit 0815632 "isci: unify remote_device stop_handlers" introduced the
possibility that not all requests get terminated if we reach the
request_count. Now that we properly reference count devices we don't
need this self-defense and can do the straightforward scan of all active
requests.
Reported-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Acked-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Tue, 28 Jun 2011 22:05:53 +0000 (15:05 -0700)]
isci: unify isci_phy and scic_sds_phy
They are one in the same object so remove the distinction. The near
duplicate fields (owning_port, and isci_port) will be cleaned up
after the scic_sds_port isci_port unification.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Mon, 27 Jun 2011 21:57:03 +0000 (14:57 -0700)]
isci: unify isci_request and scic_sds_request
They are one in the same object so remove the distinction. The near
duplicate fields (owning_controller, and isci_host) will be cleaned up
after the scic_sds_contoller isci_host unification.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 17 Jun 2011 21:18:39 +0000 (14:18 -0700)]
isci: preallocate requests
the dma_pool interface is optimized for object_size << page_size which
is not the case with isci_request objects and the dma_pool routines show
up in the top of the profile.
The old io_request_table which tracked whether tci slots were in-flight
or not is replaced with an IREQ_ACTIVE flag per request.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Tue, 28 Jun 2011 20:47:09 +0000 (13:47 -0700)]
isci: unify can_queue tracking on the tci_pool, uplevel tag assignment
The tci_pool tracks our outstanding command slots which are also the 'index'
portion of our tags. Grabbing the tag early in ->lldd_execute_task let's us
drop the isci_host_can_queue() and ->was_tag_assigned_by_user infrastructure.
->was_tag_assigned_by_user required the task context to be duplicated in
request-local buffer. With the tci established early we can build the
task_context directly into its final location and skip a memcpy.
With the task context buffer at a known address at request construction we
have the opportunity/obligation to also fix sgl handling. This rework feels
like it belongs in another patch but the sgl handling and task_context are too
intertwined.
1/ fix the 'ab' pair embedded in the task context to point to the 'cd' pair in
the task context (previously we were prematurely linking to the staging
buffer).
2/ fix the broken iteration of pio sgls that assumes all sgls are relative to
the request, and does a dangerous looking reverse lookup of physical
address to virtual address.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Jeff Skirvin [Fri, 24 Jun 2011 00:09:02 +0000 (17:09 -0700)]
isci: Terminate dev requests on FIS err bit rx in NCQ
When the remote device transitions to a not-ready state because of
an NCQ error condition, all outstanding requests to that device
are terminated and completed to libsas on the normal path. The
device then waits for a READ LOG EXT command to issue on the task
management path.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Maciej Patelczyk [Tue, 21 Jun 2011 22:03:13 +0000 (22:03 +0000)]
isci: possible buffer overflow in isci_parse_oem_parameters fixed
scu_index is a parameter of isci_parse_eom_parameters and is an index
in controller table. There is a check: scu_index > SCI_MAX_CONTROLLERS
which is insufficient and should be: scu_index >= SCI_MAX_CONTROLLERS.
scu_index is used as an index in the table which size is
SCI_MAX_CONTROLLERS.
Signed-off-by: Maciej Patelczyk <maciej.patelczyk@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Tue, 21 Jun 2011 23:23:03 +0000 (16:23 -0700)]
isci: fix isci_task_execute_tmf completion
1/ fix the timeout for wait_for_completion_timeout
2/ In the tmf timeout case we need to wait for our termination callback
3/ Once the request is successfully started it will be freed according to the
normal lifetime for requests.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Thu, 16 Jun 2011 23:59:56 +0000 (16:59 -0700)]
isci: fix support for arbitrarily large smp requests
Instead of duplicating the smp request buffer reuse the one provided by
libsas. This future proofs the driver to support arbitrarily large smp
requests, and shrinks the request structure size by ~700 bytes.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 17 Jun 2011 00:20:35 +0000 (17:20 -0700)]
isci: fix smp response frame overrun
Due to a typo we currently copy way too much when copying over the
response data, but since a request is likely backed by a full page
allocation we don't corrupt live data.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Thu, 16 Jun 2011 18:26:12 +0000 (11:26 -0700)]
isci: kill isci_remote_device_change_state()
Now that "stopping/stopped" are one in the same and signalled by a NULL device
pointer the rest of the device status infrastructure can be removed (->status
and ->state_lock). The "not ready for i/o state" is replaced with a state
flag, and is evaluated under scic_lock so that we don't see transients from
taking the device reference to submitting the i/o.
This also fixes a potential leakage of can_queue slots in the rare case that
SAS_TASK_ABORTED is set at submission.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Tue, 14 Jun 2011 00:39:44 +0000 (17:39 -0700)]
isci: atomic device lookup and reference counting
We have unsafe references to remote devices that are notified to
disappear at lldd_dev_gone. In order to clean this up we need a single
canonical source for device lookups and stable references once a lookup
succeeds. Towards that end guarantee that domain_device.lldd_dev is
NULL as soon as we start the process of stopping a device. Any code
path that wants to safely lookup a remote device must do so through
task->dev->lldd_dev (isci_lookup_device()).
For in-flight references outside of scic_lock we need reference counting
to ensure that the device is not recycled before we are done with it.
Simplify device back references to just scic_sds_request.target_device
which is now the only permissible internal reference that is maintained
relative to the reference count.
There were two occasions where we wanted new i/o's to be treated as
SAS_TASK_UNDELIVERED but where the domain_dev->lldd_dev link is still
intact. Introduce a 'gone' flag to prevent i/o while waiting for libsas
to take action on the port down event.
One 'core' leftover is that we currently call
scic_remote_device_destruct() from isci_remote_device_deconstruct()
which is called when the 'core' says the device is stopped. It would be
more natural for the final put to trigger
isci_remote_device_deconstruct() but this implementation is deferred as
it requires other changes.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Wed, 15 Jun 2011 18:11:03 +0000 (11:11 -0700)]
isci: fix ssp response iu buffer size in isci_tmf
In isci_task_request_complete() we save the response/sense data from the
command. Make sure isci_tmf has enough space to hold the full response.
[ it does not look like we actually use this data, and
response_data_len/sense_data_len should be specifying the byte count,
in any event do the simple fix first so we don't corrupt memory ]
Reported-by: Adam Gruchala <adam.gruchala@intel.com> Tested-by: Edmund Nadolski <edmund.nadolski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Mon, 13 Jun 2011 07:51:30 +0000 (00:51 -0700)]
isci: cleanup request allocation
Rather than return an error code and update a pointer that was passed by
reference just return the request object directly (or null if allocation
failed).
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Thu, 9 Jun 2011 23:04:28 +0000 (16:04 -0700)]
isci: cleanup/optimize queue increment macros
Every single i/o or event completion incurs a test and branch to see if
the cycle bit changed. For power-of-2 queue sizes the cycle bit can be
read directly from the rollover of the queue pointer.
Likely premature optimization, but the hidden if() and hidden
assignments / side-effects in the macros were already asking to be
cleaned up.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Thu, 9 Jun 2011 18:06:58 +0000 (11:06 -0700)]
isci: cleanup tag macros
A tag is a 16 bit number where the upper four bits is a sequence number
and the remainder is the task context index (tci). Sanitize the macro
names and shave 256-bytes out of scic_sds_controller by reducing the size of
io_request_sequence.
Dan Williams [Wed, 8 Jun 2011 01:50:55 +0000 (18:50 -0700)]
isci: cleanup/optimize pool implementation
The circ_buf macros are ~6% faster, as measured by perf, because they take
advantage of power-of-two math assumptions i.e. no test and branch for
rollover. Their semantics are clearer than the hidden side effects in pool.h
(like sci_pool_get() which hides an assignment).
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Mon, 20 Jun 2011 22:11:22 +0000 (15:11 -0700)]
isci: fix isci_terminate_pending() list management
Walk through the list of pending requests being careful to consider that
multiple requests can be terminated when the lock is dropped (i.e.
invalidating the 'next' reference established by
list_for_each_entry_safe).
Also noticed that all callers to isci_terminate_pending_requests()
specifying terminating, so just drop the parameter.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
In the situation where a termination of an I/O times-out,
make sure that the linkage from the request to the task
is severed completely. Also make sure that the selection
of tasks to terminate occurs under scic_lock.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Jeff Skirvin [Mon, 20 Jun 2011 21:09:06 +0000 (14:09 -0700)]
isci: Add decode for SMP request retry error condition
There are situations with slow expanders in which a first attempt
to execute an SMP request will fail with a timeout. Immediate
subsequent retries will generally succeed. This change makes sure
SMP I/O failures are immediately failed to libsas so that retries
happen with no discovery process timeout delay.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Jeff Skirvin [Tue, 21 Jun 2011 19:16:33 +0000 (12:16 -0700)]
isci: filter broadcast change notifications during SMP phy resets
When resetting a sata device in the domain we have seen occasions where
libsas prematurely marks a device gone in the time it takes for the
device to re-establish the link. This plays badly with software raid
arrays. Other libsas drivers have non-uniform delays in their reset
handlers to try to cover this condition, but not sufficient to close the
hole. Given that a sata device can take many seconds to recover we
filter bcns and poll for the device reattach state before notifying
libsas that the port needs the domain to be rediscovered. Once this has
been proven out at the lldd level we can think about uplevelling this
feature to a common implementation in libsas.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
[ use kzalloc instead of kmem_cache ] Signed-off-by: Dave Jiang <dave.jiang@intel.com>
[ use eventq and time macros ] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Wed, 1 Jun 2011 23:00:01 +0000 (16:00 -0700)]
isci: remove 'min memory' infrastructure
The old 'core' had aspirations of running in severely memory constrained
environments like bios option-rom, it's not needed for Linux and gets in
the way of other cleanups (like unifying/reducing the number of structure
members in scic_sds_controller/isci_host).
This also fixes a theoretical bug in that the driver would blindly override
the silicon advertised limits for number of ports, task contexts, and remote
node contexts.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Adam Gruchala [Wed, 1 Jun 2011 22:31:03 +0000 (22:31 +0000)]
isci: Added support for C0 to SCU Driver
C0 silicon updates the pci revision id and requires new AFE parameters
for phy signal integrity. Support for previous silicon revisions is
deprecated (it's also broken for the theoretical case of multiple
controllers at different silicon revisions, all the more reason to get
it removed as soon as possible)
Signed-off-by: Adam Gruchala <adam.gruchala@intel.com>
[fixed up deprecated silicon support] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Edmund Nadolski [Thu, 2 Jun 2011 00:10:50 +0000 (00:10 +0000)]
isci: additional state machine cleanup
Additional state machine cleanups:
o Remove static functions sci_state_machine_exit_state() and
sci_state_machine_enter_state()
o Combines sci_base_state_machine_construct() and
sci_base_state_machine_start() into a single function,
sci_init_sm()
o Remove sci_base_state_machine_stop() which is unused.
o Kill state_machine.[ch]
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
[fixed too large to inline functions] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Edmund Nadolski [Thu, 2 Jun 2011 00:10:43 +0000 (00:10 +0000)]
isci: state machine cleanup
This cleans up several areas of the state machine mechanism:
o Rename sci_base_state_machine_change_state to sci_change_state
o Remove sci_base_state_machine_get_state function
o Rename 'state_machine' struct member to 'sm' in client structs
o Shorten the name of request states
o Shorten state machine state names as follows:
SCI_BASE_CONTROLLER_STATE_xxx to SCIC_xxx
SCI_BASE_PHY_STATE_xxx to SCI_PHY_xxx
SCIC_SDS_PHY_STARTING_SUBSTATE_xxx to SCI_PHY_SUB_xxx
SCI_BASE_PORT_STATE_xxx to SCI_PORT_xxx and
SCIC_SDS_PORT_READY_SUBSTATE_xxx to SCI_PORT_SUB_xxx
SCI_BASE_REMOTE_DEVICE_STATE_xxx to SCI_DEV_xxx
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_xxx to SCI_STP_DEV_xxx
SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_xxx to SCI_SMP_DEV_xxx
SCIC_SDS_REMOTE_NODE_CONTEXT_xxx_STATE to SCI_RNC_xxx
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dave Jiang [Wed, 25 May 2011 02:21:57 +0000 (02:21 +0000)]
isci: removing the kmalloc in smp request construct
It doesn't look like there is any reason to do a kmalloc. We can do the
byte swap in place and avoid the allocation. This allow us to remove
a kmalloc and a memcpy.
Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Edmund Nadolski [Thu, 19 May 2011 11:59:10 +0000 (11:59 +0000)]
isci: replace isci_timer list with proper embedded timers
Rather than preallocating a list of timers and doling them out at runtime,
embed a struct timerlist in each object that needs one. A struct sci_timer
interface is introduced to manage the timer cancellation semantics which
currently need to guarantee the timer is cancelled while holding
spin_lock(ihost->scic_lock). Since the timeout functions also need to acquire
the lock it currently prevents the driver from using del_timer_sync() for
runtime cancellations.
del_timer_sync() is used however before the objects go out of scope.
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Piotr Sawicki [Thu, 12 May 2011 19:10:14 +0000 (19:10 +0000)]
isci: unify port link_up and link_down handlers
Unify the handlers and kill the state handler implementations.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Piotr Sawicki [Thu, 12 May 2011 19:10:08 +0000 (19:10 +0000)]
isci: remove port frame and event handlers
Unused infrastructure.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Piotr Sawicki [Thu, 12 May 2011 19:10:03 +0000 (19:10 +0000)]
isci: unify port reset, add_phy, and remove_phy handlers
Unify the implementations and remove the state handlers.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Piotr Sawicki [Wed, 11 May 2011 23:52:31 +0000 (23:52 +0000)]
isci: unify port stop handlers
Implement the stop handlers directly in scic_sds_port_stop()
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Piotr Sawicki [Wed, 11 May 2011 23:52:21 +0000 (23:52 +0000)]
isci: merge port ready substates into primary state machine
This conversion was complicated by the fact that the ready state exit routine
took unconditional action beyond just stopping the substate machine (like in
previous conversions). In order to ensure identical behaviour every state
transition needs to be instrumented to catch ready-->!ready transitions and
execute scic_sds_port_invalidate_dummy_remote_node()
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com>
[fix ready state exit handling] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Thu, 12 May 2011 13:00:31 +0000 (06:00 -0700)]
isci: clarify phy to port lookups
While cleaning up the driver it is very tempting to convert scic_sds_get_*
macros to their open coded equivalent. They are all just pointer dereferences
*except* scic_sds_phy_get_port() which returns NULL if the phy is assigned to
the dummy port. Clarify this by renaming it to phy_get_non_dummy_port().
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Adam Gruchala [Tue, 10 May 2011 23:54:23 +0000 (23:54 +0000)]
isci: merge phy substates
Merged states and substates into one state machine, as we always
unconditionally transitioned to the substate machine it was straightforward to
enter that substate from the starting state.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Adam Gruchala <adam.gruchala@intel.com>
[fixed construction, starting_state_enter, and starting check] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Wed, 11 May 2011 15:27:47 +0000 (08:27 -0700)]
isci: remove request task context completion state handler
Unlike the other conversions this only updates
scic_sds_io_request_tc_completion() to call the old state handlers directly
(with less verbose names). This was done for future patch readability, the
implementations have only minor differences for different completion codes.
Without a reference to the function name it would be difficult to dicern which
state is being updated. Considered changing the order to look up the
completion code before the state but that was not a clean conversion either.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Piotr Sawicki [Tue, 10 May 2011 23:50:32 +0000 (23:50 +0000)]
isci: unify request start handlers
Unify the implementation in scic_sds_request_start and kill the state
handler.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com>
[remove scic_sds_request_constructed_state_start_handler] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Tue, 10 May 2011 09:28:49 +0000 (02:28 -0700)]
isci: merge stp request substates into primary state machine
Remove usage of the request substate machine for stp requests, and kill
the request substate infrastructure.
Similar to the previous conversions this adds the substates to the
primary state machine and arranges for the 'started' state to transition
to the proper stp substate.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Tue, 10 May 2011 09:28:48 +0000 (02:28 -0700)]
isci: merge smp request substates into primary state machine
Remove usage of the request substate machine for smp requests identified by:
task->task_proto == SAS_PROTOCOL_SMP
While merging over the smp_request infrastructure noticed that all the
assign buffer implementations are now equal, so moved it to
scic_sds_general_request_construct.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Tue, 10 May 2011 09:28:47 +0000 (02:28 -0700)]
isci: merge ssp task management substates into primary state machine
Remove usage of the request substate machine for ssp task management
requests identified by:
ireq->ttype == tmf_task && dev->dev_type == SAS_END_DEV;
The only routine that checks the base 'started' state is
scic_sds_io_request_tc_completion which calls the substate machine
handler if we are not in the 'started' state or we are 'started' and no
substate machine is defined. This routine requires no conversion
because we have transitioned out of 'started' and the substate routine
will be called naturally as a result.
There are also no side effects of this conversion on exiting the
'started', state because it only stops the substate machine, which is no
longer relevant for this transaction type.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Sun, 8 May 2011 22:49:15 +0000 (15:49 -0700)]
isci: unify constants
cross driver constants are spread out over multiple header files, consolidate
them into isci.h, and push some includes out to the source files that need
them.
TODO: remove SCI_MODE_SIZE infrastructure.
TODO: task.h is full of inlines that are too large
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Sun, 8 May 2011 18:47:15 +0000 (11:47 -0700)]
isci: unify request data structures
Make scic_sds_request a proper member of isci_request. Also let's us
get rid of the dma pool object size tracking since we now know that all
requests are sizeof(isci_request). While cleaning up the construct
routine incidentally replaced SCI_FIELD_OFFSET with offsetof.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Sun, 8 May 2011 02:07:14 +0000 (19:07 -0700)]
isci: move task context alignment from run-time to compile time
Remove usage of PTR_ALIGN by arranging for the task context to be aligned by
the compiler. Another step towards unifying isci_request and
scic_sds_request. Once this is complete the task context in the request can
likely be removed in favor of building the task directly to tc memory (see:
scic_sds_controller_copy_task_context). It's not clear why this needs to be
cacheline aligned if we just end up copying before submission...
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Sat, 7 May 2011 17:11:43 +0000 (10:11 -0700)]
isci: unify port data structures
Make scic_sds_port a member of isci_port and merge their lifetimes which
means removing the port table from scic_sds_controller in favor of the
one at the isci_host level. Merge ihost->sas_ports into ihost->ports.
_ Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Sat, 7 May 2011 00:36:38 +0000 (17:36 -0700)]
isci: unify phy data structures
Make scic_sds_phy a member of isci_phy and merge their lifetimes which
means removing the phy table from scic_sds_controller in favor of the
one at that isci_host level.
Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
projects / mirror_ubuntu-eoan-kernel.git / log