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path: root/drivers/scsi/isci/remote_device.h
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2011-07-03isci: state machine cleanupEdmund Nadolski1-17/+17
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>
2011-07-03isci: unify constantsDan Williams1-1/+0
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>
2011-07-03isci: implement I_T_nexus_resetDan Williams1-0/+1
This is a requirement for 2.6.39's new libata eh. Still some questions about lldd_dev_gone racing against dev->lldd_dev lookups, but we are at least no more broken than mvsas in this regard. We also short-circuit I_T_nexus_reset invocations from the device discovery path (IDEV_EH similar to MVS_DEV_EH) to filter out the resulting domain rediscoveries triggered by the reset. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: removing intel_*.h headersDave Jiang1-1/+0
Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: kill scic_sds_remote_device.state_handlersDan Williams1-56/+0
Remove the now unused state_handler infrastructure for remote_devices. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device frame_handlersDan Williams1-1/+0
Implement all states in scic_sds_remote_device_frame() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device event_handlersDan Williams1-1/+0
Implement all states in scic_sds_remote_device_event() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: kill remote_device resume_handlerDan Williams1-1/+0
This is unused infrastructure. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device suspend_handlersDan Williams1-1/+0
Implement all states in scic_sds_remote_device_suspend() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: kill remote_device complete_task_handlerDan Williams1-7/+0
This is unused infrastructure. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device start_task_handlersDan Williams1-6/+0
Implement all states in scic_sds_remote_device_start_task() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: kill remote_device continue_io_handlerDan Williams1-6/+0
This is unused infrastructure. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device complete_io_handlersDan Williams1-6/+0
Implement all states in scic_sds_remote_device_complete_io() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device start_io_handlersDan Williams1-6/+0
Implement all states in scic_sds_remote_device_start_io() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device reset_complete_handlersDan Williams1-6/+0
Implement all states in scic_remote_device_reset_complete() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device reset_handlersDan Williams1-6/+0
Implement all states in scic_remote_device_reset() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device destruct_handlersDan Williams1-6/+0
Implement all states in scic_remote_device_destruct() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: kill remote_device fail_handlerDan Williams1-7/+0
This is just unused infrastructure. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device stop_handlersDan Williams1-6/+0
Implement all states in scic_remote_device_stop() and delete the state handlers. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device start_handlersDan Williams1-6/+0
Implement all states in scic_remote_device_start() and delete the state handler. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: kill scic_remote_device_get_connection_rateDan Williams1-13/+0
A function call to dereference a pointer is a tad much. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: merge remote_device substates into a single state machineDan Williams1-174/+34
A substate is just a state, so uplevel the smp and stp device substates. Three tricks at work here: 1/ scic_sds_remote_device_ready_state_enter: needs to know the the device type so it can immediately transition to a stp or smp ready substate. 2/ scic_sds_remote_device_ready_state_exit: needs to know the device type. In the ssp case the device is no longer ready, in the stp, and smp case we have simply exited to a ready "substate". 3/ scic_sds_remote_device_resume_complete_handler: The one location where we directly check the current state against SCI_BASE_REMOTE_DEVICE_STATE_READY needed to comprehend the possible ready substates. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: Removed sci_base_object from scic_sds_remote_device.Maciej Patelczyk1-8/+7
The 'struct sci_base_object' was removed from the struct scic_sds_remote_device. Signed-off-by: Maciej Patelczyk <maciej.patelczyk@intel.com> [cleaned up sci_dev_to_idev] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: removing non-working ATAPI codeDave Jiang1-38/+0
Removing not used / bit-rotten ATAPI code. This needs to go back and debugged at a later date. Signed-off-by: Dave Jiang <dave.jiang@intel.com> [reflow against devel, delete dead sati headers] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: remove scic_sds_remote_device_get_port_indexDan Williams1-9/+1
Longer to type than the open-coded equivalent. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: remove usage of sci_sas_address in scic_sds_remote_deviceDan Williams1-5/+0
The sas address can be retrieved from the domain device and then converted to the always little-endian format in the remote node context. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: kill smp_discover_response_protocols in favor of domain_device.dev_typeDan Williams1-22/+12
This is step 1 of removing the contortions to: 1/ unparse expander phy data into a smp discover frame 2/ open-code-parse the smp discover fram into a domain_device.dev_type equivalent libsas has already spent cycles determining the dev_type, so now that scic_sds_remote_device is unified with isci_remote_device we can directly reference dev_type. This might also change multi-level expander detection as we previously only looked at dev_type == EDGE_DEV and we did not consider the FANOUT_DEV case. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: move remote_device handling out of the coreDan Williams1-9/+733
Now that the core/lldd remote_device data structures are nominally unified merge the corresponding sources into the top-level directory. Also move the remote_node_context infrastructure which has no analog at the lldd level. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: unify remote_device data structuresDan Williams1-7/+2
Make it explicit that isci_remote_device and scic_sds_remote_device are one in the same object. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: fix fragile/conditional isci_host lookupsDan Williams1-46/+16
A domain_device can always reference back to ->lldd_ha unlike local lldd structures. Fix up cases where the driver uses local objects to look up the isci_host. This also changes the calling conventions of some routines to expect a valid isci_host parameter rather than re-lookup the pointer on entry. Incidentally cleans up some macros that are longer to type than the open-coded equivalent: isci_host_from_sas_ha isci_dev_from_domain_dev Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: cleanup isci_remote_device[_not]_ready interfaceDan Williams1-5/+4
Require a valid isci_host in support of the general cleanup to not re-lookup the host via potentially fragile methods when more robust methods are available. Also cleans up some more casting that should be using container_of() to up-cast a base structure in a more type-safe manner. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03isci: preallocate remote devicesDan Williams1-1/+1
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>
2011-07-03isci: replace isci_remote_device completion with event queueDan Williams1-5/+6
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>
2011-07-03isci: kill "host quiesce" mechanismDan Williams1-22/+0
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>
2011-07-03isci: remove sci_device_handleDan Williams1-1/+6
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>
2011-07-03isci: Removing deprecated functionsDave Jiang1-1/+0
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>
2011-07-03isci: Intel(R) C600 Series Chipset Storage Control Unit DriverDan Williams1-0/+154
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>
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