| Message ID | 20210114203148.246656-1-tyreld@linux.ibm.com |
|---|---|
| Headers | show |
| Series | ibmvfc: initial MQ development/enablement | expand |
Tyrel, > Recent updates in pHyp Firmware and VIOS releases provide new > infrastructure towards enabling Subordinate Command Response Queues > (Sub-CRQs) such that each Sub-CRQ is a channel backed by an actual > hardware queue in the FC stack on the partner VIOS. Sub-CRQs are > registered with the firmware via hypercalls and then negotiated with > the VIOS via new Management Datagrams (MADs) for channel setup. > > This initial implementation adds the necessary Sub-CRQ framework and > implements the new MADs for negotiating and assigning a set of > Sub-CRQs to associated VIOS HW backed channels. Applied to 5.12/scsi-staging, thanks!
On Thu, 14 Jan 2021 14:31:27 -0600, Tyrel Datwyler wrote: > Recent updates in pHyp Firmware and VIOS releases provide new infrastructure > towards enabling Subordinate Command Response Queues (Sub-CRQs) such that each > Sub-CRQ is a channel backed by an actual hardware queue in the FC stack on the > partner VIOS. Sub-CRQs are registered with the firmware via hypercalls and then > negotiated with the VIOS via new Management Datagrams (MADs) for channel setup. > > This initial implementation adds the necessary Sub-CRQ framework and implements > the new MADs for negotiating and assigning a set of Sub-CRQs to associated VIOS > HW backed channels. > > [...] Applied to 5.12/scsi-queue, thanks! [01/21] ibmvfc: add vhost fields and defaults for MQ enablement https://git.kernel.org/mkp/scsi/c/6ae208e5d2db [02/21] ibmvfc: move event pool init/free routines https://git.kernel.org/mkp/scsi/c/225acf5f1aba [03/21] ibmvfc: init/free event pool during queue allocation/free https://git.kernel.org/mkp/scsi/c/003d91a1393d [04/21] ibmvfc: add size parameter to ibmvfc_init_event_pool https://git.kernel.org/mkp/scsi/c/bb35ecb2a949 [05/21] ibmvfc: define hcall wrapper for registering a Sub-CRQ https://git.kernel.org/mkp/scsi/c/9e6b6b81aafa [06/21] ibmvfc: add Subordinate CRQ definitions https://git.kernel.org/mkp/scsi/c/6d07f129dce2 [07/21] ibmvfc: add alloc/dealloc routines for SCSI Sub-CRQ Channels https://git.kernel.org/mkp/scsi/c/3034ebe26389 [08/21] ibmvfc: add Sub-CRQ IRQ enable/disable routine https://git.kernel.org/mkp/scsi/c/d20046e64c09 [09/21] ibmvfc: add handlers to drain and complete Sub-CRQ responses https://git.kernel.org/mkp/scsi/c/1d956ad853fc [10/21] ibmvfc: define Sub-CRQ interrupt handler routine https://git.kernel.org/mkp/scsi/c/80a9e8eaed63 [11/21] ibmvfc: map/request irq and register Sub-CRQ interrupt handler https://git.kernel.org/mkp/scsi/c/39e461fddff0 [12/21] ibmvfc: implement channel enquiry and setup commands https://git.kernel.org/mkp/scsi/c/e95eef3fc0bc [13/21] ibmvfc: advertise client support for using hardware channels https://git.kernel.org/mkp/scsi/c/c53408baa502 [14/21] ibmvfc: set and track hw queue in ibmvfc_event struct https://git.kernel.org/mkp/scsi/c/cb72477be729 [15/21] ibmvfc: send commands down HW Sub-CRQ when channelized https://git.kernel.org/mkp/scsi/c/31750fbd7b6d [16/21] ibmvfc: register Sub-CRQ handles with VIOS during channel setup https://git.kernel.org/mkp/scsi/c/b88a5d9b7f56 [17/21] ibmvfc: add cancel mad initialization helper https://git.kernel.org/mkp/scsi/c/a61236da7f9c [18/21] ibmvfc: send Cancel MAD down each hw scsi channel https://git.kernel.org/mkp/scsi/c/a835f386f970 [19/21] ibmvfc: purge scsi channels after transport loss/reset https://git.kernel.org/mkp/scsi/c/7eb3ccd884ae [20/21] ibmvfc: enable MQ and set reasonable defaults https://git.kernel.org/mkp/scsi/c/9000cb998bcf [21/21] ibmvfc: provide modules parameters for MQ settings https://git.kernel.org/mkp/scsi/c/032d1900869f -- Martin K. Petersen Oracle Linux Engineering
Recent updates in pHyp Firmware and VIOS releases provide new infrastructure towards enabling Subordinate Command Response Queues (Sub-CRQs) such that each Sub-CRQ is a channel backed by an actual hardware queue in the FC stack on the partner VIOS. Sub-CRQs are registered with the firmware via hypercalls and then negotiated with the VIOS via new Management Datagrams (MADs) for channel setup. This initial implementation adds the necessary Sub-CRQ framework and implements the new MADs for negotiating and assigning a set of Sub-CRQs to associated VIOS HW backed channels. This latest series is completely rebased and reimplemented on top of the recent ("ibmvfc: MQ prepartory locking work") series. [1] [1] https://lore.kernel.org/linux-scsi/20210106201835.1053593-1-tyreld@linux.ibm.com/ changes in v5: * Addressed comments from brking in following patches: * Patch 18: Drop queue lock in loop after sending cancel event Remove cancel event from list after completion Return -EIO on unknown failure * Patch 21: Removed can_queue rebase artifact and range check user supplied nr_scsi_hw_queue value changes in v4: * Series rebased and reworked on top of previous ibmvfc locking series * Dropped all previous Reviewed-by tags changes in v3: * Patch 4: changed firmware support logging to dev_warn_once * Patch 6: adjusted locking * Patch 15: dropped logging verbosity, moved cancel event tracking into subqueue * Patch 17: removed write permission for migration module parameters drive hard reset after update to num of scsi channels changes in v2: * Patch 4: NULL'd scsi_scrq reference after deallocation * Patch 6: Added switch case to handle XPORT event * Patch 9: fixed ibmvfc_event leak and double free * added support for cancel command with MQ * added parameter toggles for MQ settings Tyrel Datwyler (21): ibmvfc: add vhost fields and defaults for MQ enablement ibmvfc: move event pool init/free routines ibmvfc: init/free event pool during queue allocation/free ibmvfc: add size parameter to ibmvfc_init_event_pool ibmvfc: define hcall wrapper for registering a Sub-CRQ ibmvfc: add Subordinate CRQ definitions ibmvfc: add alloc/dealloc routines for SCSI Sub-CRQ Channels ibmvfc: add Sub-CRQ IRQ enable/disable routine ibmvfc: add handlers to drain and complete Sub-CRQ responses ibmvfc: define Sub-CRQ interrupt handler routine ibmvfc: map/request irq and register Sub-CRQ interrupt handler ibmvfc: implement channel enquiry and setup commands ibmvfc: advertise client support for using hardware channels ibmvfc: set and track hw queue in ibmvfc_event struct ibmvfc: send commands down HW Sub-CRQ when channelized ibmvfc: register Sub-CRQ handles with VIOS during channel setup ibmvfc: add cancel mad initialization helper ibmvfc: send Cancel MAD down each hw scsi channel ibmvfc: purge scsi channels after transport loss/reset ibmvfc: enable MQ and set reasonable defaults ibmvfc: provide modules parameters for MQ settings drivers/scsi/ibmvscsi/ibmvfc.c | 917 ++++++++++++++++++++++++++++----- drivers/scsi/ibmvscsi/ibmvfc.h | 39 ++ 2 files changed, 828 insertions(+), 128 deletions(-)