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* isci: unify constantsDan Williams2011-07-031-0/+1
| | | | | | | | | | | 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>
* isci: unify isci_host data structuresArtur Wojcik2011-07-031-3/+1
| | | | | | | | | Make it explicit that isci_host and scic_sds_controller are one in the same object. Signed-off-by: Artur Wojcik <artur.wojcik@intel.com> [removed ->ihost back pointer] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* isci: fix ata lockingDan Williams2011-07-031-13/+13
| | | | | | | | Upstream commit a29b5dad "libata: fix locking for sas paths" switched libsas ata locking to the ata_host lock. We need to do the same when returning ata tasks from the execute path. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* isci: Convert of sci_ssp_response_iu to ssp_response_iuDave Jiang2011-07-031-12/+8
| | | | | | | | | | | Converting to Linux native format. However the isci driver does a lot of the calculation based on the max size of this data structure and the Linux data structure only has a pointer to the response data. Thus the sizeof(struct ssp_response_iu) will be incorrect and we need to define the max size. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* isci: Qualify when the host lock is managed for STP/SATA callbacks.Jeff Skirvin2011-07-031-0/+37
| | | | | | | | | | In the case of internal discovery related STP/SATA I/O started through sas_execute_task the host lock is not taken by libsas before calling lldd_execute_task, so the lock should not be managed before calling back to libsas through task->task_done or sas_task_abort. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* isci: namespacecheck cleanupsDan Williams2011-07-031-10/+0
| | | | | | | | | | * mark needlessly global routines static * delete unused functions * move kernel-doc blocks from header files to source * reorder some functions to delete declarations * more default handler cleanups phy Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* isci: task.h compile and checkpatch fixesDan Williams2011-07-031-23/+19
| | | | | | A usage of "FALSE" leaked in as well as some checkpatch escapes. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* isci: Always set response/status for requests going into the error path.Jeff Skirvin2011-07-031-4/+9
| | | | | | | | 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>
* isci: Errors in the submit path for SATA devices manage the ap lock.Dan Williams2011-07-031-59/+0
| | | | | | | | | 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>
* isci: Fix TMF build for SAS/SATA LUN reset cases.Jeff Skirvin2011-07-031-0/+9
| | | | | | | | | 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>
* isci: save the i/o tag outside the scic request structure.Jeff Skirvin2011-07-031-1/+1
| | | | | | | | | | 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>
* isci: Any reset indicated on an I/O completion escalates it to the error path.Jeff Skirvin2011-07-031-13/+40
| | | | | | | | | | 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>
* isci: Intel(R) C600 Series Chipset Storage Control Unit DriverDan Williams2011-07-021-0/+368
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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