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* [SCSI] libsas: convert ha->state to flagsDan Williams2012-02-191-2/+1
| | | | | | | | In preparation for adding new states (SAS_HA_DRAINING, SAS_HA_FROZEN), convert ha->state into a set of flags. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] libsas: replace event locks with atomic bitopsDan Williams2012-02-191-3/+0
| | | | | | | | The locks only served to make sure the pending event bitmask was updated consistently. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] libsas: fix leak of dev->sata_dev.identify_[packet_]deviceDan Williams2012-02-191-1/+2
| | | | | | | | | | These are never freed in the nominal path. A domain_device has a different lifetime than a sas_rphy we need a dev->rphy independent way of identifying sata devices. Reviewed-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>
* [SCSI] libsas: fix domain_device leakDan Williams2012-02-191-0/+1
| | | | | | | | | | | | | | | | | | Arrange for the deallocation of a struct domain_device object when it no longer has: 1/ any children 2/ references by any scsi_targets 3/ references by a lldd The comment about domain_device lifetime in Documentation/scsi/libsas.txt is stale as it appears mainline never had a version of a struct domain_device that was registered as a kobject. We now manage domain_device reference counts on behalf of external agents. Reviewed-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>
* [SCSI] libsas: kill sas_slave_destroyDan Williams2012-02-191-1/+0
| | | | | | | | | Per commit 3e4ec344 "libata: kill ATA_FLAG_DISABLED" needing to set ATA_DEV_NONE is a holdover from before libsas converted to the "new-style" ata-eh. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] libsas: remove unused ata_task_resp fieldsDan Williams2012-02-191-7/+0
| | | | | | | | | | | Commit 1e34c838 "[SCSI] libsas: remove spurious sata control register read/write" removed the routines to fake the presence of the sata control registers, now remove the unused data structure fields to kill any remaining confusion. 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>
* [SCSI] Handle disk devices which can not process medium access commandsMartin K. Petersen2012-02-192-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | We have experienced several devices which fail in a fashion we do not currently handle gracefully in SCSI. After a failure these devices will respond to the SCSI primary command set (INQUIRY, TEST UNIT READY, etc.) but any command accessing the storage medium will time out. The following patch adds an callback that can be used by upper level drivers to inspect the results of an error handling command. This in turn has been used to implement additional checking in the SCSI disk driver. If a medium access command fails twice but TEST UNIT READY succeeds both times in the subsequent error handling we will offline the device. The maximum number of failed commands required to take a device offline can be tweaked in sysfs. Also add a new error flag to scsi_debug which allows this scenario to be easily reproduced. [jejb: fix up integer parsing to use kstrtouint] Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] iscsi_transport: Added Ping supportVikas Chaudhary2012-02-192-0/+25
| | | | | | | | | Added ping support for iscsi adapter, application can use this interface for diagnostic network connection. 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>
* [SCSI] scsi_transport_iscsi: added support for host eventVikas Chaudhary2012-02-192-0/+19
| | | | | | | | | Added support to post kernel host event to application using netlink interface. 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>
* [SCSI] libiscsi_tcp: fix max_r2t manipulationMike Christie2012-02-192-2/+2
| | | | | | | | | | Problem description from Xi Wang: A large max_r2t could lead to integer overflow in subsequent call to iscsi_tcp_r2tpool_alloc(), allocating a smaller buffer than expected and leading to out-of-bounds write. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] Correctly set the scsi host/msg/status bytesMoger, Babu2012-02-191-3/+3
| | | | | | | | | | | | | Resubmitting as my previous post had format issues and did not go llinux-scsi. This patch changes the function to set_msg_byte, set_host_byte and set_driver_byte to correctly set the corresponding bytes appropriately. It will reset the original setting and correctly set it to the new value. The previous OR operation does not always set it back to new value. Look at patch 2/2 for an example. Signed-off-by: Babu Moger <babu.moger@netapp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] libfc: Add support for FDMINeerav Parikh2012-02-193-0/+527
| | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for Fabric Device Management Interface as per FC-GS-4 spec. in libfc. Any driver making use of libfc can enable fdmi state machine for a given lport. If lport has enabled FDMI support the lport state machine will transition into FDMI after completing the DNS states and before entering the SCR state. The FDMI state transition is such that if there is an error, it won't stop the lport state machine from transitioning and the it will behave as if there was no FDMI support. The FDMI HBA attributes are registed with the Management server via Register HBA (RHBA) command and the port attributes are reigstered using the Register Port(RPA) command. Signed-off-by: Neerav Parikh <neerav.parikh@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Acked-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] libfc: Make the libfc Common Transport(CT) code genericNeerav Parikh2012-02-191-12/+48
| | | | | | | | | | | | Currently the libfc Common Transport(CT) calls assume that the CT requests are Name Server specific only. This patch makes it more flexible to allow more FC-GS services to make use of these routines. Signed-off-by: Neerav Parikh <neerav.parikh@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Acked-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] scsi_transport_fc: Getting FC Port Speed in sync with FC-GSNeerav Parikh2012-02-191-2/+2
| | | | | | | | | | | | | | | The values for the 4G and 10G speeds are not in sync with definitions in SM-HBA/FC-GS-x/etc. This patch brings them in sync to these specifications. The values are converted to strings when represented via sysfs attribute, hence that should cover for user space apps as they may not see any change. Signed-off-by: Neerav Parikh <neerav.parikh@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Acked-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] scsi_transport_fc: Add FDMI host attributesNeerav Parikh2012-02-191-0/+28
| | | | | | | | | | | | | This adds FC-GS Fabric Device Management Interface (FDMI) related attributes to fc_host_attr structure. This is in preparation for allowing FDMI attributes to be registered via libfc. Signed-off-by: Neerav Parikh <neerav.parikh@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Acked-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] scsi_transport_iscsi: Added support to show port_state and port_speed ↵Vikas Chaudhary2012-02-192-0/+21
| | | | | | | | | | | | | | in sysfs sysfs patch to view port_state: /sys/class/iscsi_host/host*/port_state sysfs patch to view port_speed: /sys/class/iscsi_host/host*/port_speed 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>
* [SCSI] libiscsi: Added support to show targetalias in sysfsVikas Chaudhary2012-02-191-0/+1
| | | | | | | | | sysfs patch to view target alias: /sys/class/iscsi_session/session*/targetalias 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>
* [SCSI] libfc: Declare local functions staticBart Van Assche2012-01-161-1/+1
| | | | | | | | | | | Avoid that sparse complains about missing declarations for local functions by declaring these static or by adding an #include directive. Add the __percpu annotation where it is missing. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* Merge tag 'scsi-misc' of ↵Linus Torvalds2012-01-102-1/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 SCSI updates for post 3.2 merge window * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (67 commits) [SCSI] lpfc 8.3.28: Update driver version to 8.3.28 [SCSI] lpfc 8.3.28: Add Loopback support for SLI4 adapters [SCSI] lpfc 8.3.28: Critical Miscellaneous fixes [SCSI] Lpfc 8.3.28: FC and SCSI Discovery Fixes [SCSI] lpfc 8.3.28: Add support for ABTS failure handling [SCSI] lpfc 8.3.28: SLI fixes and added SLI4 support [SCSI] lpfc 8.3.28: Miscellaneous fixes in sysfs and mgmt interfaces [SCSI] mpt2sas: Removed redundant calling of _scsih_probe_devices() from _scsih_probe [SCSI] mac_scsi: Remove obsolete IRQ_FLG_* users [SCSI] qla4xxx: Update driver version to 5.02.00-k10 [SCSI] qla4xxx: check for FW alive before calling chip_reset [SCSI] qla4xxx: Fix qla4xxx_dump_buffer to dump buffer correctly [SCSI] qla4xxx: Fix the IDC locking mechanism [SCSI] qla4xxx: Wait for disable_acb before doing set_acb [SCSI] qla4xxx: Don't recover adapter if device state is FAILED [SCSI] qla4xxx: fix call trace on rmmod with ql4xdontresethba=1 [SCSI] qla4xxx: Fix CPU lockups when ql4xdontresethba set [SCSI] qla4xxx: Perform context resets in case of context failures. [SCSI] iscsi class: export pid of process that created [SCSI] mpt2sas: Remove unused duplicate diag_buffer_enable param ...
| * [SCSI] iscsi class: export pid of process that createdMike Christie2011-12-151-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There could be multiple userspace entities creating/destroying/ recoverying sessions and also the kernel's iscsi drivers could be doing this too. If the userspace apps do try to manage the kernel ones it can get the driver/fw out of sync and cause the user to loose the root disk, oopses or ping ponging becasue userspace wants to do one thing but the kernel manager thought we are trying to do another. This patch fixes the problem by just exporting the pid of the entity that created the session. Userspace programs like iscsid, iscsiadm, iscsistart, qlogic's tools, etc, can then figure out which sessions they own and only manage them. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] scsi_dh: code cleanup and remove the references to scsi_dev_infoMoger, Babu2011-12-151-1/+0
| | | | | | | | | | | | | | | | | | All the handlers have now implemented the match function so We don't need to use scsi_dev_info any more for matching purposes. Signed-off-by: Babu Moger <babu.moger@netapp.com> Acked-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* | Merge branch 'upstream-linus' of git://github.com/jgarzik/libata-devLinus Torvalds2012-01-101-0/+3
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'upstream-linus' of git://github.com/jgarzik/libata-dev: ahci: support the STA2X11 I/O Hub pata_bf54x: fix BMIDE status register emulation ata: add ata port hibernate callbacks ata: update ata port's runtime status during system resume [SCSI] runtime resume parent for child's system-resume ahci: platform support for suspend/resume libata-core: kill duplicate statement in ata_do_set_mode() pata_of_platform: remove direct dependency on OF_IRQ SATA/PATA: convert drivers/ata/* to use module_platform_driver() pata_cs5536: forward port changes from cs5536 libata-sff: use ATAPI_{COD|IO} ata: add ata port runtime PM callbacks ata: add ata port system PM callbacks [SCSI] sd: check runtime PM status in sd_shutdown [SCSI] check runtime PM status in system PM [SCSI] add flag to skip the runtime PM calls on the host ata: make ata port as parent device of scsi host ahci: start engine only during soft/hard resets
| * | [SCSI] add flag to skip the runtime PM calls on the hostLin Ming2012-01-081-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With previous change, now the ata port runtime suspend will happen as: disk suspend --> scsi target suspend --> scsi host suspend --> ata port suspend ata port(parent device) suspend need to schedule scsi EH which will resume scsi host(child device). Then the child device resume will in turn make parent device resume first. This is kind of recursive. This patch adds a new flag Scsi_Host::eh_noresume. ata port will set this flag to skip the runtime PM calls on scsi host. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | | switch ->is_visible() to returning umode_tAl Viro2012-01-031-1/+1
|/ / | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | [SCSI] fcoe: fix fcoe in a DCB environment by adding DCB notifiers to set ↵john fastabend2011-12-151-0/+3
|/ | | | | | | | | | | | | | | | skb priority Use DCB notifiers to set the skb priority to allow packets to be steered and tagged correctly over DCB enabled drivers that setup traffic classes. This allows queue_mapping() routines to be removed in these drivers that were previously inspecting the ethertype of every skb to mark FCoE/FIP frames. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2011-10-289-117/+356
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (204 commits) [SCSI] qla4xxx: export address/port of connection (fix udev disk names) [SCSI] ipr: Fix BUG on adapter dump timeout [SCSI] megaraid_sas: Fix instance access in megasas_reset_timer [SCSI] hpsa: change confusing message to be more clear [SCSI] iscsi class: fix vlan configuration [SCSI] qla4xxx: fix data alignment and use nl helpers [SCSI] iscsi class: fix link local mispelling [SCSI] iscsi class: Replace iscsi_get_next_target_id with IDA [SCSI] aacraid: use lower snprintf() limit [SCSI] lpfc 8.3.27: Change driver version to 8.3.27 [SCSI] lpfc 8.3.27: T10 additions for SLI4 [SCSI] lpfc 8.3.27: Fix queue allocation failure recovery [SCSI] lpfc 8.3.27: Change algorithm for getting physical port name [SCSI] lpfc 8.3.27: Changed worst case mailbox timeout [SCSI] lpfc 8.3.27: Miscellanous logic and interface fixes [SCSI] megaraid_sas: Changelog and version update [SCSI] megaraid_sas: Add driver workaround for PERC5/1068 kdump kernel panic [SCSI] megaraid_sas: Add multiple MSI-X vector/multiple reply queue support [SCSI] megaraid_sas: Add support for MegaRAID 9360/9380 12GB/s controllers [SCSI] megaraid_sas: Clear FUSION_IN_RESET before enabling interrupts ...
| * [SCSI] iscsi class: fix vlan configurationMike Christie2011-10-201-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Userspace was sending the priority/id part of the vlan tag and sysfs was displaying the id in the vlan file. This renames the vlan sysfs file to vlan_id to reflect that it was showing the id and to match the vlan_priority file. This also adds a ISCSI_NET_PARAM_VLAN_TAG iscsi nl command to relfect that we are sending down the vlan/priority part of the tag. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] qla4xxx: fix data alignment and use nl helpersMike Christie2011-10-201-1/+2
| | | | | | | | | | | | | | | | | | | | This has the driver use helpers for a common operation and fixes a issue where if multiple iscsi params are sent they could be sent at offsets that cause unaligned accesses. The nla helpers account for the padding needed to align properly for the driver. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] iscsi class: Replace iscsi_get_next_target_id with IDAMike Christie2011-10-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Replaced the iscsi_get_next_target_id with IDA to make target-id allocation efficient for iscsi offload drivers This patch should be applied after Jonathen Cameron Patch "ida : simplified functions for id allocation" Signed-off-by: John Soni Jose <jose0here@gmail.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: fix port->dev_list lockingDan Williams2011-10-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | port->dev_list maintains a list of devices attached to a given sas root port. It needs to be mutated under a lock as contexts outside of the single-threaded-libsas-workqueue access the list via sas_find_dev_by_rphy(). Fixup locations where the list was being mutated without a lock. This is a follow-up to commit 5911e963 "[SCSI] libsas: remove expander from dev list on error", where Luben noted [1]: > 2/ We have unlocked list manipulations in sas_ex_discover_end_dev(), > sas_unregister_common_dev(), and sas_ex_discover_end_dev() Yes, I can see that and that is very unfortunate. [1]: http://marc.info/?l=linux-scsi&m=131480962006471&w=2 Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] fcoe,libfcoe: Move common code for fcoe_get_lesb to fcoe_transportBhanu Prakash Gollapudi2011-10-161-0/+2
| | | | | | | | | | | | | | | | | | Except for obtaining the netdev from lport, fcoe_get_lesb is the common code for the LLDs. Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com> Acked-by: Yi Zou <yi.zou@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] isci: export phy events via ->lldd_control_phy()Dan Williams2011-10-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow the sas-transport-class to update events for local phys via a new PHY_FUNC_GET_EVENTS command to ->lldd_control_phy(). Fixup drivers that are not prepared for new enum phy_func values, and unify ->lldd_control_phy() error codes. These are the SAS defined phy events that are reported in a smp-report-phy-error-log command: * /sys/class/sas_phy/<phyX>/invalid_dword_count * /sys/class/sas_phy/<phyX>/running_disparity_error_count * /sys/class/sas_phy/<phyX>/loss_of_dword_sync_count * /sys/class/sas_phy/<phyX>/phy_reset_problem_count Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] isci: atapi supportDan Williams2011-10-021-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on original implementation from Jiangbi Liu and Maciej Trela. ATAPI transfers happen in two-to-three stages. The two stage atapi commands are those that include a dma data transfer. The data transfer portion of these operations is handled by the hardware packet-dma acceleration. The three-stage commands do not have a data transfer and are handled without hardware assistance in raw frame mode. stage1: transmit host-to-device fis to notify the device of an incoming atapi cdb. Upon reception of the pio-setup-fis repost the task_context to perform the dma transfer of the cdb+data (go to stage3), or repost the task_context to transmit the cdb as a raw frame (go to stage 2). stage2: wait for hardware notification of the cdb transmission and then go to stage 3. stage3: wait for the arrival of the terminating device-to-host fis and terminate the command. To keep the implementation simple we only support ATAPI packet-dma protocol (for commands with data) to avoid needing to handle the data transfer manually (like we do for SATA-PIO). This may affect compatibility for a small number of devices (see ATA_HORKAGE_ATAPI_MOD16_DMA). If the data-transfer underruns, or encounters an error the device-to-host fis is expected to arrive in the unsolicited frame queue to pass to libata for disposition. However, in the DONE_UNEXP_FIS (data underrun) case it appears we need to craft a response. In the DONE_REG_ERR case we do receive the UF and propagate it to libsas. Signed-off-by: Maciej Trela <maciej.trela@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libfc: cache align struct fc_exch fieldsVasu Dev2011-10-021-15/+12
| | | | | | | | | | | | | | | | | | | | cache aligned xid and ex_lock beside removing holes. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libfc: cache align struct fc_fcp_pkt fieldsVasu Dev2011-10-021-28/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Re-arrange its fields to avoid padding and have better cacheline alignments. Removed not used start_time, end_time and last_pkt_time fields. This all reduced this struct size to 448 from 480 and that also reduced one cacheline on x86_64 beside eliminating 8 pads. However kept logical fields together. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: fix warnings when checking sata/stp protocolDan Williams2011-10-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several sas drivers legitimately check the protocol against the union of SAS_PROTOCOL_SATA and SAS_PROTOCOL_STP. Provide a SAS_PROTOCOL_STP_ALL to silence warnings like: drivers/scsi/pm8001/pm8001_sas.c:438:3: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch] drivers/scsi/mvsas/mv_sas.c:798:2: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch] drivers/scsi/mvsas/mv_sas.c:1783:2: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch] drivers/scsi/mvsas/mv_sas.c:1886:2: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch] drivers/scsi/isci/request.c:3565:2: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch] Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: fix try_test_sas_gpio_gp_bit() build errorDan Williams2011-10-021-0/+7
| | | | | | | | | | | | | | | | | | | | If the user has disabled CONFIG_SCSI_SAS_HOST_SMP then libsas drivers will not be receiving smp-gpio frames and do not need this lookup code. Reported-by: Randy Dunlap <rdunlap@xenotime.net> Tested-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: Allow expander T-T attachmentsLuben Tuikov2011-10-022-2/+15
| | | | | | | | | | | | | | | | Allow expander table-to-table attachments for expanders that support it. Signed-off-by: Luben Tuikov <ltuikov@yahoo.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: sgpio write supportDan Williams2011-09-222-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add SFF-8485 v0.7 / SAS-1 smp-write-gpio register support to libsas. Defer SAS-2 support unless/until it defines an sgpio interface. Minimum implementation needed to get the lights blinking. try_test_sas_gpio_gp_bit() provides a common method to parse the incoming write data (raw bitstream), and the to_sas_gpio_gp_bit() helper routine can be used as a basis for the set/clear operations for the 'read' implementation. Host implementations parse as many bits (ODx.[012]) as are locally supported and report the number of registers successfully written. If the submitted data overruns the internal number of registers available report the write as a success with the number of bytes remaining reported in ->resid_len. Example (assuming an active backplane) set the "identify" pattern for the first 21 devices: smp_write_gpio --count=2 --data=92,49,24,92,24,92,49,24 -t 4 --index=1 /dev/bsg/sas_hostX Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] scsi_dh: Implement match callback functionHannes Reinecke2011-08-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Some device handler types are not tied to the vendor/model but rather to a specific capability. Eg ALUA is supported if the 'TPGS' setting in the standard inquiry is set. This patch implements a 'match' callback for device handler which supersedes the original vendor/model lookup and implements the callback for the ALUA handler. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] scsi_dh_alua: Evaluate TPGS setting from inquiry dataHannes Reinecke2011-08-301-0/+5
| | | | | | | | | | | | | | | | | | Instead of issuing a standard inquiry from within the alua device handler we can evaluate the TPGS setting from the existing inquiry data of the sdev and save us the I/O. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] scsi scan: don't fail scans when host is in recoveryMike Christie2011-08-291-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem is that if we are doing a scsi scan then the device goes into recovery then we will wait for the recovery to complete. It waits because scsi-ml will send inquiries or report luns and the queueing code will have been blocked due to the host not being ready. However, if we are in recovery and then a scan is started the scan will silently fail and some devices will not be added. It is easy to hit the problem where devices do not show up with FC where we are doing tests that disrupt the target controllers. When the controller is disruprted (reboot, or setting firmware, etc), and we cause the dev loss tmo to fire then devices will be removed Then when the problem has been fixed, the rport will be scanned and devices should be added back. But if we cause another disruption before scanning has started then devices will not get added back. If the problem is not started until the scan is started then the devices will be added back. This patch fixes that problem by not failing scans when the host is in recovery. We will let scsi-ml send the IO and let the queueing and scsi error handling deal with it like is done if we went into recovery while scanning. For recovery cases where the host is being torn down then with the patch we will still fail the scan since there is not point in scanning. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] scsi: Added support for adapter and firmware resetVikas Chaudhary2011-08-271-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added new sysfs attr 'host_reset' in scsi_sysfs.c to perform adapter or firmware reset as suggested by Mike Christie here: http://marc.info/?l=linux-scsi&m=127359347111167&w=2 user/application can write "adapter" or "firmware" on this attr and it will call newly added function hook in scsi_host_template to call LDD adapter or firmware reset implementation. 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>
| * [SCSI] scsi_transport_iscsi: Added support to update initiator iscsi portVikas Chaudhary2011-08-271-0/+1
| | | | | | | | | | | | 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>
| * [SCSI] scsi_transport_iscsi: Added support to update mtuVikas Chaudhary2011-08-271-0/+1
| | | | | | | | | | | | 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>
| * [SCSI] scsi_transport_iscsi: Add conn login, kernel to user, event to ↵Manish Rangankar2011-08-272-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | support offload session login. Offload drivers like qla4xxx will offload the sending of the login/logout pdus still, so this patch adds iscsi_conn_login_event which is used by these types of drivers to notify userspace that the connection has changed state. It also adds a iscsi_is_session_online helper so the lld can query the sessions state field. Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com> Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] iscsi class: add bsg support to iscsi classMike Christie2011-08-272-1/+116
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds bsg support to the iscsi class. There is only 1 request, the host vendor one, supported. It is expected that this would be used for things like flash updates. This patch is made over this one http://marc.info/?l=linux-scsi&m=131149780020992&w=2 Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] iscsi class: expand vlan supportMike Christie2011-08-271-2/+11
| | | | | | | | | | | | | | | | | | Add support to set vlan priority and enable/disble a vlan. Patch based on code from Vikas Chaudhary. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] iscsi class: sysfs group is_visible callout for iscsi host attrsMike Christie2011-08-272-7/+0
| | | | | | | | | | | | | | | | | | | | | | The iscsi class currently does not support writable sysfs attrs for LLD sysfs settings. This patch converts the iscsi class and driver's host attrs to use the attribute container sysfs group and the sysfs group's is_visible callout to be able to support readable or writable sysfs attrs. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] iscsi class: remove iface param maskMike Christie2011-08-272-18/+0
| | | | | | | | | | | | | | | | We can replace the iface param mask with the attr_is_visible callback. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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