kernel/drivers/scsi/isci/remote_device.h, branch linux-6.9.y

scsi: libsas: aic94xx: hisi_sas: mvsas: pm8001: Use dev_is_expander()

2019-06-20T19:37:02Z

Many times in libsas, and in LLDDs which use libsas, the check for an expander device is re-implemented or open coded. Use dev_is_expander() instead. We rename this from sas_dev_type_is_expander() to not spill so many lines in referencing. Signed-off-by: John Garry Reviewed-by: Jason Yan Reviewed-by: Jack Wang Signed-off-by: Martin K. Petersen

[SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type

2013-05-10T14:47:52Z

These enums have been separate since the dawn of SAS, mainly because the latter is a procotol only enum and the former includes additional state for libsas. The dichotomy causes endless confusion about which one you should use where and leads to pointless warnings like this: drivers/scsi/mvsas/mv_sas.c: In function 'mvs_update_phyinfo': drivers/scsi/mvsas/mv_sas.c:1162:34: warning: comparison between 'enum sas_device_type' and 'enum sas_dev_type' [-Wenum-compare] Fix by eliminating one of them. The one kept is effectively the sas.h one, but call it sas_device_type and make sure the enums are all properly namespaced with the SAS_ prefix. Signed-off-by: James Bottomley

isci: Restore the ATAPI device RNC management code.

2012-05-17T21:33:43Z

The ATAPI specific and STP general RNC suspension code had been incorrectly removed from the remote device code. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams

isci: Wait for RNC resumption before leaving the abort path.

2012-05-17T21:33:42Z

In the case of TMF execution, or device resets, wait for the RNC to fully resume before returning to the caller. This ensures that the remote device will not fail I/O requests while waiting for the RNC resumption to complete. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams

isci: When in the abort path, defeat other resume calls until done.

2012-05-17T21:33:41Z

Completion of I/Os during the one of the abort path interface calls from libsas can drive remote device state changes and the resumption of the device RNC. This is a problem when the abort path is attempting to cleanup outstanding I/O at the same time - the resumption can prevent the termination from occuring correctly. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams

isci: Implement waiting for suspend in the abort path.

2012-05-17T21:33:41Z

In order to prevent a device from receiving an I/O request while still in an RNC suspending or resuming state (and therefore failing that I/O back to libsas with a reset required status) wait for the RNC state change before proceding in the abort path. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams

isci: Manage the LLHANG timer enable/disable per-device.

2012-05-17T21:33:40Z

The LLHANG timer should be enabled once per device. This patch corrects both the timer enable and the timer disable for the remote device. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams

isci: Remove isci_device reqs_in_process and dev_node from isci_device.

2012-05-17T21:33:39Z

Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams

isci: Redesign device suspension, abort, cleanup.

2012-05-17T21:33:38Z

This commit changes the means by which outstanding I/Os are handled for cleanup. The likelihood is that this commit will be broken into smaller pieces, however that will be a later revision. Among the changes: - All completion structures have been removed from the tmf and abort paths. - Now using one completed I/O list, with the I/O completed in host bit being used to select error or normal callback paths. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams

isci: Manage device suspensions during TC terminations.

2012-05-17T21:33:37Z

TCs must be terminated only while the RNC is suspended. This commit adds remote device suspensions and resumptions in the abort, reset and termination paths. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams