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Ahmed S. Darwish c12208668a scsi: isci: Switch back to original libsas event notifiers
libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original libas API, while still passing GFP context.
The libsas _gfp() variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-18-a.darwish@linutronix.de
Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:09 -05:00
Ahmed S. Darwish f76d9f1a15 scsi: libsas: Switch back to original event notifiers API
libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original event notifiers API, while still passing GFP
context.  The _gfp() notifier variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-17-a.darwish@linutronix.de
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:09 -05:00
Ahmed S. Darwish de6d7547ce scsi: pm80xx: Switch back to original libsas event notifiers
libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original libas API, while still passing GFP context.
The libsas _gfp() variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-16-a.darwish@linutronix.de
Cc: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:09 -05:00
Ahmed S. Darwish 093289e40b scsi: aic94xx: Switch back to original libsas event notifiers
libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original libas API, while still passing GFP context.
The libsas _gfp() variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-15-a.darwish@linutronix.de
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:09 -05:00
Ahmed S. Darwish 872a90b5b4 scsi: hisi_sas: Switch back to original libsas event notifiers
libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original libas API, while still passing GFP context.
The libsas _gfp() variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-14-a.darwish@linutronix.de
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:09 -05:00
Ahmed S. Darwish 5d6a75a1ed scsi: libsas: Add gfp_t flags parameter to event notifications
All call-sites of below libsas APIs:

  - sas_alloc_event()
  - sas_notify_port_event()
  - sas_notify_phy_event()

have been converted to use the _gfp()-suffixed version.  Modify the
original APIs above to take a gfp_t flags parameter by default.

For bisectability, call-sites will be modified again to use the original
libsas APIs (while passing gfp_t). The temporary _gfp()-suffixed versions
can then be removed.

Link: https://lore.kernel.org/r/20210118100955.1761652-13-a.darwish@linutronix.de
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:09 -05:00
Ahmed S. Darwish 26c7efc3f9 scsi: hisi_sas: Pass gfp_t flags to libsas event notifiers
Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

Below are the context analysis for modified functions:

=> hisi_sas_bytes_dmaed():

Since it is invoked from both process and atomic contexts, let its callers
pass the gfp_t flags:

  * hisi_sas_main.c:
  ------------------

    hisi_sas_phyup_work(): workqueue context
      -> hisi_sas_bytes_dmaed(..., GFP_KERNEL)

    hisi_sas_controller_reset_done(): has an msleep()
      -> hisi_sas_rescan_topology()
        -> hisi_sas_phy_down()
          -> hisi_sas_bytes_dmaed(..., GFP_KERNEL)

    hisi_sas_debug_I_T_nexus_reset(): calls wait_for_completion_timeout()
      -> hisi_sas_phy_down()
        -> hisi_sas_bytes_dmaed(..., GFP_KERNEL)

  * hisi_sas_v1_hw.c:
  -------------------

    int_abnormal_v1_hw(): irq handler
      -> hisi_sas_phy_down()
        -> hisi_sas_bytes_dmaed(..., GFP_ATOMIC)

  * hisi_sas_v[23]_hw.c:
  ----------------------

    int_phy_updown_v[23]_hw(): irq handler
      -> phy_down_v[23]_hw()
        -> hisi_sas_phy_down()
          -> hisi_sas_bytes_dmaed(..., GFP_ATOMIC)

=> int_bcast_v1_hw() and phy_bcast_v3_hw():

Both are invoked exclusively from irq handlers. Pass GFP_ATOMIC.

Link: https://lore.kernel.org/r/20210118100955.1761652-12-a.darwish@linutronix.de
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:08 -05:00
Ahmed S. Darwish 111d06ab77 scsi: aic94xx: Pass gfp_t flags to libsas event notifiers
Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

Context analysis:

  aic94xx_hwi.c: asd_dl_tasklet_handler()
    -> asd_ascb::tasklet_complete()
    == escb_tasklet_complete()
      -> aic94xx_scb.c: asd_phy_event_tasklet()
      -> aic94xx_scb.c: asd_bytes_dmaed_tasklet()
      -> aic94xx_scb.c: asd_link_reset_err_tasklet()
      -> aic94xx_scb.c: asd_primitive_rcvd_tasklet()

All functions are invoked by escb_tasklet_complete(), which is invoked by
the tasklet handler. Pass GFP_ATOMIC.

Link: https://lore.kernel.org/r/20210118100955.1761652-11-a.darwish@linutronix.de
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:08 -05:00
Ahmed S. Darwish cd4e817698 scsi: pm80xx: Pass gfp_t flags to libsas event notifiers
Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

Call chain analysis, pm8001_hwi.c:

  pm8001_interrupt_handler_msix() || pm8001_interrupt_handler_intx() || pm8001_tasklet()
    -> PM8001_CHIP_DISP->isr() = pm80xx_chip_isr()
      -> process_oq [spin_lock_irqsave(&pm8001_ha->lock, ...)]
        -> process_one_iomb()
          -> mpi_hw_event()
            -> hw_event_sas_phy_up()
              -> pm8001_bytes_dmaed()
            -> hw_event_sata_phy_up
              -> pm8001_bytes_dmaed()

All functions are invoked by process_one_iomb(), which is invoked by the
interrupt service routine and the tasklet handler. A similar call chain is
also found at pm80xx_hwi.c. Pass GFP_ATOMIC.

For pm8001_sas.c, pm8001_phy_control() runs in task context as it calls
wait_for_completion() and msleep().  Pass GFP_KERNEL.

Link: https://lore.kernel.org/r/20210118100955.1761652-10-a.darwish@linutronix.de
Cc: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:08 -05:00
Ahmed S. Darwish 19a39831ff scsi: libsas: Pass gfp_t flags to event notifiers
Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

Context analysis:

  - sas_enable_revalidation(): process, acquires mutex
  - sas_resume_ha(): process, calls wait_event_timeout()

Link: https://lore.kernel.org/r/20210118100955.1761652-9-a.darwish@linutronix.de
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:08 -05:00
Ahmed S. Darwish 71dca5539f scsi: isci: Pass gfp_t flags in isci_port_bc_change_received()
Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

libsas sas_notify_port_event() is called from
isci_port_bc_change_received(). Below is the context analysis for all of
its call chains:

host.c: sci_controller_error_handler(): atomic, irq handler     (*)
OR host.c: sci_controller_completion_handler(), atomic, tasklet (*)
  -> sci_controller_process_completions()
    -> sci_controller_event_completion()
      -> phy.c: sci_phy_event_handler()
        -> port.c: sci_port_broadcast_change_received()
          -> isci_port_bc_change_received()

host.c: isci_host_init()                                        (@)
spin_lock_irq(isci_host::scic_lock)
  -> sci_controller_initialize(), atomic                        (*)
    -> port_config.c: sci_port_configuration_agent_initialize()
      -> sci_mpc_agent_validate_phy_configuration()
        -> port.c: sci_port_add_phy()
          -> sci_port_set_phy()
            -> phy.c: sci_phy_set_port()
              -> port.c: sci_port_broadcast_change_received()
                -> isci_port_bc_change_received()

port_config.c: apc_agent_timeout(), atomic, timer callback      (*)
  -> sci_apc_agent_configure_ports()
    -> port.c: sci_port_add_phy()
      -> sci_port_set_phy()
        -> phy.c: sci_phy_set_port()
          -> port.c: sci_port_broadcast_change_received()
            -> isci_port_bc_change_received()

phy.c: enter SCI state: *SCI_PHY_STOPPED*                       # Cont. from [1]
  -> sci_phy_stopped_state_enter()
    -> host.c: sci_controller_link_down()
      -> ->link_down_handler()
      == port_config.c: sci_apc_agent_link_down()
        -> port.c: sci_port_remove_phy()
          -> sci_port_clear_phy()
            -> phy.c: sci_phy_set_port()
              -> port.c: sci_port_broadcast_change_received()
                -> isci_port_bc_change_received()

phy.c: enter SCI state: *SCI_PHY_STARTING*                      # Cont. from [2]
  -> sci_phy_starting_state_enter()
    -> host.c: sci_controller_link_down()
      -> ->link_down_handler()
      == port_config.c: sci_apc_agent_link_down()
        -> port.c: sci_port_remove_phy()
          -> sci_port_clear_phy()
            -> phy.c: sci_phy_set_port()
              -> port.c: sci_port_broadcast_change_received()
                -> isci_port_bc_change_received()

[1] Call chains for entering state: *SCI_PHY_STOPPED*
-----------------------------------------------------

host.c: isci_host_init()                                        (@)
spin_lock_irq(isci_host::scic_lock)
  -> sci_controller_initialize(), atomic                        (*)
      -> phy.c: sci_phy_initialize()
        -> phy.c: sci_phy_link_layer_initialization()
          -> phy.c: sci_change_state(SCI_PHY_STOPPED)

init.c: PCI ->remove() || PM_OPS ->suspend,  process context    (+)
  -> host.c: isci_host_deinit()
    -> sci_controller_stop_phys()
      -> phy.c: sci_phy_stop()
	-> sci_change_state(SCI_PHY_STOPPED)

phy.c: isci_phy_control()
spin_lock_irqsave(isci_host::scic_lock, )
  -> sci_phy_stop(), atomic                                     (*)
    -> sci_change_state(SCI_PHY_STOPPED)

[2] Call chains for entering state: *SCI_PHY_STARTING*
------------------------------------------------------

phy.c: phy_sata_timeout(), atimer, timer callback               (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> sci_change_state(SCI_PHY_STARTING)

host.c: phy_startup_timeout(), atomic, timer callback           (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> sci_controller_start_next_phy()
    -> sci_phy_start()
      -> sci_change_state(SCI_PHY_STARTING)

host.c: isci_host_start()                                       (@)
spin_lock_irq(isci_host::scic_lock)
  -> sci_controller_start(), atomic                             (*)
    -> sci_controller_start_next_phy()
      -> sci_phy_start()
        -> sci_change_state(SCI_PHY_STARTING)

phy.c: Enter SCI state *SCI_PHY_SUB_FINAL*                      # Cont. from [2A]
  -> sci_change_state(SCI_PHY_SUB_FINAL)
    -> sci_phy_starting_final_substate_enter()
      -> sci_change_state(SCI_PHY_READY)
        -> Enter SCI state: *SCI_PHY_READY*
          -> sci_phy_ready_state_enter()
            -> host.c: sci_controller_link_up()
              -> sci_controller_start_next_phy()
                -> sci_phy_start()
                  -> sci_change_state(SCI_PHY_STARTING)

phy.c: sci_phy_event_handler(), atomic, discussed earlier       (*)
  -> sci_change_state(SCI_PHY_STARTING), 11 instances

port.c: isci_port_perform_hard_reset()
spin_lock_irqsave(isci_host::scic_lock, )
  -> port.c: sci_port_hard_reset(), atomic                      (*)
    -> phy.c: sci_phy_reset()
      -> sci_change_state(SCI_PHY_RESETTING)
        -> enter SCI PHY state: *SCI_PHY_RESETTING*
          -> sci_phy_resetting_state_enter()
            -> sci_change_state(SCI_PHY_STARTING)

[2A] Call chains for entering SCI state: *SCI_PHY_SUB_FINAL*
------------------------------------------------------------

host.c: power_control_timeout(), atomic, timer callback         (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> phy.c: sci_phy_consume_power_handler()
    -> phy.c: sci_change_state(SCI_PHY_SUB_FINAL)

host.c: sci_controller_error_handler(): atomic, irq handler     (*)
OR host.c: sci_controller_completion_handler(), atomic, tasklet (*)
  -> sci_controller_process_completions()
    -> sci_controller_unsolicited_frame()
      -> phy.c: sci_phy_frame_handler()
        -> sci_change_state(SCI_PHY_SUB_AWAIT_SAS_POWER)
          -> sci_phy_starting_await_sas_power_substate_enter()
            -> host.c: sci_controller_power_control_queue_insert()
              -> phy.c: sci_phy_consume_power_handler()
                -> sci_change_state(SCI_PHY_SUB_FINAL)
        -> sci_change_state(SCI_PHY_SUB_FINAL)
    -> sci_controller_event_completion()
      -> phy.c: sci_phy_event_handler()
        -> sci_phy_start_sata_link_training()
          -> sci_change_state(SCI_PHY_SUB_AWAIT_SATA_POWER)
            -> sci_phy_starting_await_sata_power_substate_enter
              -> host.c: sci_controller_power_control_queue_insert()
                -> phy.c: sci_phy_consume_power_handler()
                  -> sci_change_state(SCI_PHY_SUB_FINAL)

As can be seen from the "(*)" markers above, almost all the call-chains are
atomic. The only exception, marked with "(+)", is a PCI ->remove() and
PM_OPS ->suspend() cold path. Thus, pass GFP_ATOMIC to the libsas port
event notifier.

Note, the now-replaced libsas APIs used in_interrupt() to implicitly decide
which memory allocation type to use.  This was only partially correct, as
it fails to choose the correct GFP flags when just preemption or interrupts
are disabled. Such buggy code paths are marked with "(@)" in the call
chains above.

Link: https://lore.kernel.org/r/20210118100955.1761652-8-a.darwish@linutronix.de
Fixes: 1c393b970e ("scsi: libsas: Use dynamic alloced work to avoid sas event lost")
Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:08 -05:00
Ahmed S. Darwish 5ce7902902 scsi: isci: Pass gfp_t flags in isci_port_link_up()
Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

libsas sas_notify_port_event() is called from isci_port_link_up().  Below
is the context analysis for all of its call chains:

host.c: isci_host_init()                                        (@)
spin_lock_irq(isci_host::scic_lock)
  -> sci_controller_initialize(), atomic                        (*)
    -> port_config.c: sci_port_configuration_agent_initialize()
      -> sci_mpc_agent_validate_phy_configuration()
        -> port.c: sci_port_add_phy()
          -> sci_port_general_link_up_handler()
            -> sci_port_activate_phy()
              -> isci_port_link_up()

port_config.c: apc_agent_timeout(), atomic, timer callback      (*)
  -> sci_apc_agent_configure_ports()
    -> port.c: sci_port_add_phy()
      -> sci_port_general_link_up_handler()
        -> sci_port_activate_phy()
          -> isci_port_link_up()

phy.c: enter SCI state: *SCI_PHY_SUB_FINAL*                     # Cont. from [1]
  -> phy.c: sci_phy_starting_final_substate_enter()
    -> phy.c: sci_change_state(SCI_PHY_READY)
      -> enter SCI state: *SCI_PHY_READY*
        -> phy.c: sci_phy_ready_state_enter()
          -> host.c: sci_controller_link_up()
            -> .link_up_handler()
            == port_config.c: sci_apc_agent_link_up()
              -> port.c: sci_port_link_up()
                -> (continue at [A])
            == port_config.c: sci_mpc_agent_link_up()
	      -> port.c: sci_port_link_up()
                -> (continue at [A])

port_config.c: mpc_agent_timeout(), atomic, timer callback      (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> ->link_up_handler()
  == port_config.c: sci_apc_agent_link_up()
    -> port.c: sci_port_link_up()
      -> (continue at [A])
  == port_config.c: sci_mpc_agent_link_up()
    -> port.c: sci_port_link_up()
      -> (continue at [A])

[A] port.c: sci_port_link_up()
  -> sci_port_activate_phy()
    -> isci_port_link_up()
  -> sci_port_general_link_up_handler()
    -> sci_port_activate_phy()
      -> isci_port_link_up()

[1] Call chains for entering SCI state: *SCI_PHY_SUB_FINAL*
-----------------------------------------------------------

host.c: power_control_timeout(), atomic, timer callback         (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> phy.c: sci_phy_consume_power_handler()
    -> phy.c: sci_change_state(SCI_PHY_SUB_FINAL)

host.c: sci_controller_error_handler(): atomic, irq handler     (*)
OR host.c: sci_controller_completion_handler(), atomic, tasklet (*)
  -> sci_controller_process_completions()
    -> sci_controller_unsolicited_frame()
      -> phy.c: sci_phy_frame_handler()
        -> sci_change_state(SCI_PHY_SUB_AWAIT_SAS_POWER)
          -> sci_phy_starting_await_sas_power_substate_enter()
            -> host.c: sci_controller_power_control_queue_insert()
              -> phy.c: sci_phy_consume_power_handler()
                -> sci_change_state(SCI_PHY_SUB_FINAL)
        -> sci_change_state(SCI_PHY_SUB_FINAL)
    -> sci_controller_event_completion()
      -> phy.c: sci_phy_event_handler()
        -> sci_phy_start_sata_link_training()
          -> sci_change_state(SCI_PHY_SUB_AWAIT_SATA_POWER)
            -> sci_phy_starting_await_sata_power_substate_enter
              -> host.c: sci_controller_power_control_queue_insert()
                -> phy.c: sci_phy_consume_power_handler()
                  -> sci_change_state(SCI_PHY_SUB_FINAL)

As can be seen from the "(*)" markers above, all the call-chains are
atomic.  Pass GFP_ATOMIC to libsas port event notifier.

Note, the now-replaced libsas APIs used in_interrupt() to implicitly decide
which memory allocation type to use.  This was only partially correct, as
it fails to choose the correct GFP flags when just preemption or interrupts
are disabled. Such buggy code paths are marked with "(@)" in the call
chains above.

Link: https://lore.kernel.org/r/20210118100955.1761652-7-a.darwish@linutronix.de
Fixes: 1c393b970e ("scsi: libsas: Use dynamic alloced work to avoid sas event lost")
Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:08 -05:00
Ahmed S. Darwish 885ab3b892 scsi: isci: Pass gfp_t flags in isci_port_link_down()
Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

sas_notify_phy_event() is exclusively called by isci_port_link_down().
Below is the context analysis for all of its call chains:

port.c: port_timeout(), atomic, timer callback                  (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> port_state_machine_change(..., SCI_PORT_FAILED)
    -> enter SCI port state: *SCI_PORT_FAILED*
      -> sci_port_failed_state_enter()
        -> isci_port_hard_reset_complete()
          -> isci_port_link_down()

port.c: isci_port_perform_hard_reset()
spin_lock_irqsave(isci_host::scic_lock, )
  -> port.c: sci_port_hard_reset(), atomic                      (*)
    -> phy.c: sci_phy_reset()
      -> sci_change_state(SCI_PHY_RESETTING)
        -> enter SCI PHY state: *SCI_PHY_RESETTING*
          -> sci_phy_resetting_state_enter()
            -> port.c: sci_port_deactivate_phy()
	      -> isci_port_link_down()

port.c: enter SCI port state: *SCI_PORT_READY*                  # Cont. from [1]
  -> sci_port_ready_state_enter()
    -> isci_port_hard_reset_complete()
      -> isci_port_link_down()

phy.c: enter SCI state: *SCI_PHY_STOPPED*                       # Cont. from [2]
  -> sci_phy_stopped_state_enter()
    -> host.c: sci_controller_link_down()
      -> ->link_down_handler()
      == port_config.c: sci_apc_agent_link_down()
        -> port.c: sci_port_remove_phy()
          -> sci_port_deactivate_phy()
            -> isci_port_link_down()
      == port_config.c: sci_mpc_agent_link_down()
        -> port.c: sci_port_link_down()
          -> sci_port_deactivate_phy()
            -> isci_port_link_down()

phy.c: enter SCI state: *SCI_PHY_STARTING*                      # Cont. from [3]
  -> sci_phy_starting_state_enter()
    -> host.c: sci_controller_link_down()
      -> ->link_down_handler()
      == port_config.c: sci_apc_agent_link_down()
        -> port.c: sci_port_remove_phy()
          -> isci_port_link_down()
      == port_config.c: sci_mpc_agent_link_down()
        -> port.c: sci_port_link_down()
          -> sci_port_deactivate_phy()
            -> isci_port_link_down()

[1] Call chains for 'enter SCI port state: *SCI_PORT_READY*'
------------------------------------------------------------

host.c: isci_host_init()                                        (@)
spin_lock_irq(isci_host::scic_lock)
  -> sci_controller_initialize(), atomic                        (*)
    -> port_config.c: sci_port_configuration_agent_initialize()
      -> sci_mpc_agent_validate_phy_configuration()
        -> port.c: sci_port_add_phy()
          -> sci_port_general_link_up_handler()
            -> port_state_machine_change(, SCI_PORT_READY)
              -> enter port state *SCI_PORT_READY*

host.c: isci_host_start()                                       (@)
spin_lock_irq(isci_host::scic_lock)
  -> host.c: sci_controller_start(), atomic                     (*)
    -> host.c: sci_port_start()
      -> port.c: port_state_machine_change(, SCI_PORT_READY)
        -> enter port state *SCI_PORT_READY*

port_config.c: apc_agent_timeout(), atomic, timer callback      (*)
  -> sci_apc_agent_configure_ports()
    -> port.c: sci_port_add_phy()
      -> sci_port_general_link_up_handler()
        -> port_state_machine_change(, SCI_PORT_READY)
          -> enter port state *SCI_PORT_READY*

port_config.c: mpc_agent_timeout(), atomic, timer callback      (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> ->link_up_handler()
  == port.c: sci_apc_agent_link_up()
    -> sci_port_general_link_up_handler()
      -> port_state_machine_change(, SCI_PORT_READY)
        -> enter port state *SCI_PORT_READY*
  == port.c: sci_mpc_agent_link_up()
    -> port.c: sci_port_link_up()
      -> sci_port_general_link_up_handler()
        -> port_state_machine_change(, SCI_PORT_READY)
          -> enter port state *SCI_PORT_READY*

phy.c: enter SCI state: SCI_PHY_SUB_FINAL                       # Cont. from [1A]
  -> sci_phy_starting_final_substate_enter()
    -> sci_change_state(SCI_PHY_READY)
      -> enter SCI state: *SCI_PHY_READY*
        -> sci_phy_ready_state_enter()
          -> host.c: sci_controller_link_up()
            -> port_agent.link_up_handler()
            == port_config.c: sci_apc_agent_link_up()
              -> port.c: sci_port_link_up()
                -> sci_port_general_link_up_handler()
                  -> port_state_machine_change(, SCI_PORT_READY)
                    -> enter port state *SCI_PORT_READY*
            == port_config.c: sci_mpc_agent_link_up()
              -> port.c: sci_port_link_up()
                -> sci_port_general_link_up_handler()
                  -> port_state_machine_change(, SCI_PORT_READY)
                    -> enter port state *SCI_PORT_READY*

[1A] Call chains for entering SCI state: *SCI_PHY_SUB_FINAL*
------------------------------------------------------------

host.c: power_control_timeout(), atomic, timer callback         (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> phy.c: sci_phy_consume_power_handler()
    -> phy.c: sci_change_state(SCI_PHY_SUB_FINAL)

host.c: sci_controller_error_handler(): atomic, irq handler     (*)
OR host.c: sci_controller_completion_handler(), atomic, tasklet (*)
  -> sci_controller_process_completions()
    -> sci_controller_unsolicited_frame()
      -> phy.c: sci_phy_frame_handler()
        -> sci_change_state(SCI_PHY_SUB_AWAIT_SAS_POWER)
          -> sci_phy_starting_await_sas_power_substate_enter()
            -> host.c: sci_controller_power_control_queue_insert()
              -> phy.c: sci_phy_consume_power_handler()
                -> sci_change_state(SCI_PHY_SUB_FINAL)
        -> sci_change_state(SCI_PHY_SUB_FINAL)
    -> sci_controller_event_completion()
      -> phy.c: sci_phy_event_handler()
        -> sci_phy_start_sata_link_training()
          -> sci_change_state(SCI_PHY_SUB_AWAIT_SATA_POWER)
            -> sci_phy_starting_await_sata_power_substate_enter
              -> host.c: sci_controller_power_control_queue_insert()
                -> phy.c: sci_phy_consume_power_handler()
                  -> sci_change_state(SCI_PHY_SUB_FINAL)

[2] Call chains for entering state: *SCI_PHY_STOPPED*
-----------------------------------------------------

host.c: isci_host_init()                                        (@)
spin_lock_irq(isci_host::scic_lock)
  -> sci_controller_initialize(), atomic                        (*)
      -> phy.c: sci_phy_initialize()
        -> phy.c: sci_phy_link_layer_initialization()
          -> phy.c: sci_change_state(SCI_PHY_STOPPED)

init.c: PCI ->remove() || PM_OPS ->suspend,  process context    (+)
  -> host.c: isci_host_deinit()
    -> sci_controller_stop_phys()
      -> phy.c: sci_phy_stop()
	-> sci_change_state(SCI_PHY_STOPPED)

phy.c: isci_phy_control()
spin_lock_irqsave(isci_host::scic_lock, )
  -> sci_phy_stop(), atomic                                     (*)
    -> sci_change_state(SCI_PHY_STOPPED)

[3] Call chains for entering state: *SCI_PHY_STARTING*
------------------------------------------------------

phy.c: phy_sata_timeout(), atimer, timer callback               (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> sci_change_state(SCI_PHY_STARTING)

host.c: phy_startup_timeout(), atomic, timer callback           (*)
spin_lock_irqsave(isci_host::scic_lock, )
  -> sci_controller_start_next_phy()
    -> sci_phy_start()
      -> sci_change_state(SCI_PHY_STARTING)

host.c: isci_host_start()                                       (@)
spin_lock_irq(isci_host::scic_lock)
  -> sci_controller_start(), atomic                             (*)
    -> sci_controller_start_next_phy()
      -> sci_phy_start()
        -> sci_change_state(SCI_PHY_STARTING)

phy.c: Enter SCI state *SCI_PHY_SUB_FINAL*, atomic, check above (*)
  -> sci_change_state(SCI_PHY_SUB_FINAL)
    -> sci_phy_starting_final_substate_enter()
      -> sci_change_state(SCI_PHY_READY)
        -> Enter SCI state: *SCI_PHY_READY*
          -> sci_phy_ready_state_enter()
            -> host.c: sci_controller_link_up()
              -> sci_controller_start_next_phy()
                -> sci_phy_start()
                  -> sci_change_state(SCI_PHY_STARTING)

phy.c: sci_phy_event_handler(), atomic, discussed earlier       (*)
  -> sci_change_state(SCI_PHY_STARTING), 11 instances

phy.c: enter SCI state: *SCI_PHY_RESETTING*, atomic, discussed  (*)
  -> sci_phy_resetting_state_enter()
    -> sci_change_state(SCI_PHY_STARTING)

As can be seen from the "(*)" markers above, almost all the call-chains are
atomic. The only exception, marked with "(+)", is a PCI ->remove() and
PM_OPS ->suspend() cold path. Thus, pass GFP_ATOMIC to the libsas phy event
notifier.

Note, The now-replaced libsas APIs used in_interrupt() to implicitly decide
which memory allocation type to use.  This was only partially correct, as
it fails to choose the correct GFP flags when just preemption or interrupts
are disabled. Such buggy code paths are marked with "(@)" in the call
chains above.

Link: https://lore.kernel.org/r/20210118100955.1761652-6-a.darwish@linutronix.de
Fixes: 1c393b970e ("scsi: libsas: Use dynamic alloced work to avoid sas event lost")
Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:07 -05:00
Ahmed S. Darwish feb18e900f scsi: mvsas: Pass gfp_t flags to libsas event notifiers
mvsas calls the non _gfp version of the libsas event notifiers API, leading
to the buggy call chains below:

  mvsas/mv_sas.c: mvs_work_queue() [process context]
  spin_lock_irqsave(mvs_info::lock, )
    -> libsas/sas_event.c: sas_notify_phy_event()
      -> sas_alloc_event()
        -> in_interrupt() = false
          -> invalid GFP_KERNEL allocation
    -> libsas/sas_event.c: sas_notify_port_event()
      -> sas_alloc_event()
        -> in_interrupt() = false
          -> invalid GFP_KERNEL allocation

Use the new event notifiers API instead, which requires callers to
explicitly pass the gfp_t memory allocation flags.

Below are context analysis for the modified functions:

=> mvs_bytes_dmaed():

Since it is invoked from both process and atomic contexts, let its callers
pass the gfp_t flags. Call chains:

  scsi_scan.c: do_scsi_scan_host() [has msleep()]
    -> shost->hostt->scan_start()
    -> [mvsas/mv_init.c: Scsi_Host::scsi_host_template .scan_start = mvs_scan_start()]
    -> mvsas/mv_sas.c: mvs_scan_start()
      -> mvs_bytes_dmaed(..., GFP_KERNEL)

  mvsas/mv_sas.c: mvs_work_queue()
  spin_lock_irqsave(mvs_info::lock,)
    -> mvs_bytes_dmaed(..., GFP_ATOMIC)

  mvsas/mv_64xx.c: mvs_64xx_isr() || mvsas/mv_94xx.c: mvs_94xx_isr()
    -> mvsas/mv_chips.h: mvs_int_full()
      -> mvsas/mv_sas.c: mvs_int_port()
        -> mvs_bytes_dmaed(..., GFP_ATOMIC);

=> mvs_work_queue():

Invoked from process context, but it calls all the libsas event notifier
APIs under a spin_lock_irqsave(). Pass GFP_ATOMIC.

Link: https://lore.kernel.org/r/20210118100955.1761652-5-a.darwish@linutronix.de
Fixes: 1c393b970e ("scsi: libsas: Use dynamic alloced work to avoid sas event lost")
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:07 -05:00
Ahmed S. Darwish c2d0f1a65a scsi: libsas: Introduce a _gfp() variant of event notifiers
sas_alloc_event() uses in_interrupt() to decide which allocation should be
used.

The usage of in_interrupt() in drivers is phased out and Linus clearly
requested that code which changes behaviour depending on context should
either be separated or the context be conveyed in an argument passed by the
caller, which usually knows the context.

The in_interrupt() check is also only partially correct, because it fails
to choose the correct code path when just preemption or interrupts are
disabled. For example, as in the following call chain:

  mvsas/mv_sas.c: mvs_work_queue() [process context]
  spin_lock_irqsave(mvs_info::lock, )
    -> libsas/sas_event.c: sas_notify_phy_event()
      -> sas_alloc_event()
        -> in_interrupt() = false
          -> invalid GFP_KERNEL allocation
    -> libsas/sas_event.c: sas_notify_port_event()
      -> sas_alloc_event()
        -> in_interrupt() = false
          -> invalid GFP_KERNEL allocation

Introduce sas_alloc_event_gfp(), sas_notify_port_event_gfp(), and
sas_notify_phy_event_gfp(), which all behave like the non _gfp() variants
but use a caller-passed GFP mask for allocations.

For bisectability, all callers will be modified first to pass GFP context,
then the non _gfp() libsas API variants will be modified to take a gfp_t by
default.

Link: https://lore.kernel.org/r/20210118100955.1761652-4-a.darwish@linutronix.de
Fixes: 1c393b970e ("scsi: libsas: Use dynamic alloced work to avoid sas event lost")
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:07 -05:00
John Garry 121181f3f8 scsi: libsas: Remove notifier indirection
LLDDs report events to libsas with .notify_port_event and .notify_phy_event
callbacks.

These callbacks are fixed and so there is no reason why the functions
cannot be called directly, so do that.

This neatens the code slightly, makes it more obvious, and reduces function
pointer usage, which is generally a good thing. Downside is that there are
2x more symbol exports.

[a.darwish@linutronix.de: Remove the now unused "sas_ha" local variables]

Link: https://lore.kernel.org/r/20210118100955.1761652-3-a.darwish@linutronix.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:07 -05:00
Ahmed S. Darwish 3f901c81df scsi: libsas: docs: Remove notify_ha_event()
The ->notify_ha_event() hook has long been removed from the libsas event
interface.

Remove it from documentation.

Link: https://lore.kernel.org/r/20210118100955.1761652-2-a.darwish@linutronix.de
Fixes: 042ebd293b ("scsi: libsas: kill useless ha_event and do some cleanup")
Cc: stable@vger.kernel.org
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:31:07 -05:00
Hannes Reinecke 491152c7c3 scsi: ncr53c8xx: Use SAM status values
Use SAM status values instead of the driver-defined ones.  This also fixes
a potential bug as the driver-defined values declare 'COMMAND TERMINATED'
with a value of 0x20, whereas SCSI-II defines it with a value of 0x22.

Link: https://lore.kernel.org/r/20210113090500.129644-36-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:12 -05:00
Hannes Reinecke aced5500ec scsi: advansys: Kill driver-defined status byte accessors
Replace the driver-defined status byte accessors with the mid-layer defined
ones.

Link: https://lore.kernel.org/r/20210113090500.129644-35-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:12 -05:00
Hannes Reinecke 6098c3005d scsi: qla2xxx: fc_remote_port_chkready() returns a SCSI result value
fc_remote_port_chkready() returns a SCSI result value, not the port
status. Fix the value returned when the remote port isn't set.

Link: https://lore.kernel.org/r/20210113090500.129644-34-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:12 -05:00
Hannes Reinecke ecc751b27a scsi: storvsc: Return DID_ERROR for invalid commands
ILLEGAL_COMMAND is a sense code, not a driver byte.

Link: https://lore.kernel.org/r/20210113090500.129644-33-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:12 -05:00
Hannes Reinecke 88188179f3 scsi: ips: Use correct command completion on error
A non-zero queuecommand() return code means 'busy', i.e. the command hasn't
been submitted. So any command which should be failed need to be completed
via the ->scsi_done() callback with the appropriate result code set.

Link: https://lore.kernel.org/r/20210113090500.129644-32-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:12 -05:00
Hannes Reinecke fc8e006c38 scsi: wd33c93: Use SCSI status
Use standard SCSI status and drop usage of the linux-specific ones.

Link: https://lore.kernel.org/r/20210113090500.129644-31-hare@suse.de
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:12 -05:00
Hannes Reinecke 809dadb15a scsi: esp_scsi: Do not set SCSI message byte
The message byte setting always devolves to COMMAND_COMPLETE so we can drop
setting the message byte in the SCSI result.

Link: https://lore.kernel.org/r/20210113090500.129644-30-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:11 -05:00
Hannes Reinecke 6b50529e2f scsi: esp_scsi: Use host byte as last argument to esp_cmd_is_done()
Just pass in the host byte to esp_cmd_is_done() and set the status or
message bytes if the host byte is DID_OK.

Link: https://lore.kernel.org/r/20210113090500.129644-29-hare@suse.de
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:11 -05:00
Hannes Reinecke d37932a916 scsi: core: Add 'set_status_byte()' accessor
Add the missing 'set_status_byte()' accessor function.

Link: https://lore.kernel.org/r/20210113090500.129644-28-hare@suse.de
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:11 -05:00
Hannes Reinecke 78c9efdd8d scsi: dpt_i2o: Use DID_ERROR instead of INITIATOR_ERROR message
Change the error code for an invalid SCSI opcode to DID_ERROR.
INITIATOR_ERROR is a scsi parallel message which doesn't apply for RAID
HBAs.

Link: https://lore.kernel.org/r/20210113090500.129644-27-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:11 -05:00
Hannes Reinecke ddb99b1d1d scsi: mac53c94: Do not set invalid command result
CMD_ACCEPT_MSG is an internal definition and most certainly not a SCSI
status. As the latter gets set during command completion we can drop the
assignment here.

Link: https://lore.kernel.org/r/20210113090500.129644-26-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:11 -05:00
Hannes Reinecke f3272258d7 scsi: atp870u: Use standard definitions
Use standard definitions for SCSI commands and return status instead of the
hardcoded values.

Link: https://lore.kernel.org/r/20210113090500.129644-25-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:11 -05:00
Hannes Reinecke db83d8a5c8 scsi: ufs: ufshcd: Do not set COMMAND_COMPLETE
COMMAND_COMPLETE is defined as '0', so setting it is quite pointless.

Link: https://lore.kernel.org/r/20210113090500.129644-24-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:11 -05:00
Hannes Reinecke 7a64c81448 scsi: scsi_debug: Do not set COMMAND_COMPLETE
COMMAND_COMPLETE is defined as '0', so setting it is quite pointless.

Link: https://lore.kernel.org/r/20210113090500.129644-23-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:10 -05:00
Hannes Reinecke 9df17f4679 scsi: initio: Drop internal SCSI message definition
Use the standard SCSI message definitions instead of the driver-internal
ones.

Link: https://lore.kernel.org/r/20210113090500.129644-22-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:10 -05:00
Hannes Reinecke 9c2d267073 scsi: dc395x: Drop internal SCSI message definitions
Drop the internal SCSI message definitions and use the functions provided
by the SPI transport class.

Link: https://lore.kernel.org/r/20210113090500.129644-21-hare@suse.de
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:10 -05:00
Hannes Reinecke d8cd784ff7 scsi: aic7xxx: aic79xx: Drop internal SCSI message definition
Use the standard SCSI message definitions instead of the driver-internal
ones.

Link: https://lore.kernel.org/r/20210113090500.129644-20-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:10 -05:00
Hannes Reinecke 1c9eb798d5 scsi: nsp_cs: Drop internal SCSI message definition
Use the standard SCSI message definitions instead of the driver-internal
ones.

Link: https://lore.kernel.org/r/20210113090500.129644-19-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:10 -05:00
Hannes Reinecke 8959e81cf4 scsi: stex: Do not set COMMAND_COMPLETE
COMMAND_COMPLETE is defined as '0', so setting it is quite pointless.

Link: https://lore.kernel.org/r/20210113090500.129644-18-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:10 -05:00
Hannes Reinecke 0e310ac4ef scsi: hpsa: Do not set COMMAND_COMPLETE
COMMAND_COMPLETE is defined as '0', and it is a SCSI parallel message to
boot. Drop the call to set_msg_byte().

Link: https://lore.kernel.org/r/20210113090500.129644-17-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:09 -05:00
Hannes Reinecke cdec16c117 scsi: aacraid: Avoid setting message byte on completion
The aacraid controller is a RAID controller and the driver will never see
any SCSI messages. Plus it's quite pointless to set the message byte if the
host byte is already set, as the latter takes precedence during error
recovery.  Drop the message byte values for the final result.

Link: https://lore.kernel.org/r/20210113090500.129644-16-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:09 -05:00
Hannes Reinecke 3273c91bbd scsi: zfcp: Do not set COMMAND_COMPLETE
COMMAND_COMPLETE is defined as '0', and it is a SCSI parallel message to
boot. So drop the call to set_msg_byte().

Link: https://lore.kernel.org/r/20210113090500.129644-15-hare@suse.de
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:09 -05:00
Hannes Reinecke 35f1cad1f9 scsi: qla4xxx: Use standard SAM status definitions
Use standard SAM status definitions and drop the driver-defined ones.

Link: https://lore.kernel.org/r/20210113090500.129644-14-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:09 -05:00
Hannes Reinecke f55475891e scsi: dc395: Drop private SAM status code definitions
We don't need to duplicate definitions from the common include files.

Link: https://lore.kernel.org/r/20210113090500.129644-13-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:09 -05:00
Hannes Reinecke 23d339f08f scsi: nsp32: Fixup status handling
SCp.status is always the SAM-defined status value, not the Linux
ones. Fixup the one wrong definition.

Link: https://lore.kernel.org/r/20210113090500.129644-12-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:09 -05:00
Hannes Reinecke 0eb198d2c3 scsi: acornscsi: Use standard defines
Use midlayer-defined values and drop the non-existing QUEUE_FULL case; we
are checking the SCSI messages in the switch statement, and QUEUE_FULL is a
SCSI status hence it can never occur here.

Link: https://lore.kernel.org/r/20210113090500.129644-11-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:09 -05:00
Hannes Reinecke eb74b9322b scsi: bfa: Drop driver-defined SCSI status codes
Drop the driver-defined SCSI status codes and use the generic ones instead.

Link: https://lore.kernel.org/r/20210113090500.129644-10-hare@suse.de
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:08 -05:00
Hannes Reinecke 54c9f6fdef scsi: aic7xxx: aic79xx: Remove driver-defined SAM status definitions
Replace the driver-defined SAM status definitions with the standard
mid-layer defined ones.

Link: https://lore.kernel.org/r/20210113090500.129644-9-hare@suse.de
Reviewed-by: Bart van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:08 -05:00
Hannes Reinecke c23435dbc7 scsi: aic7xxx: aic79xx: Kill pointless forward declarations
Link: https://lore.kernel.org/r/20210113090500.129644-8-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:08 -05:00
Hannes Reinecke 7662d92374 scsi: aic7xxx: aic79xx: Whitespace cleanup
Link: https://lore.kernel.org/r/20210113090500.129644-7-hare@suse.de
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:08 -05:00
Hannes Reinecke bcd5c59f21 scsi: atp870u: Whitespace cleanup
Link: https://lore.kernel.org/r/20210113090500.129644-6-hare@suse.de
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:08 -05:00
Hannes Reinecke 1789671ded scsi: 3w-sas: Whitespace cleanup
Link: https://lore.kernel.org/r/20210113090500.129644-5-hare@suse.de
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:08 -05:00
Hannes Reinecke bf4eebbf53 scsi: 3w-9xxx: Whitespace cleanup
Link: https://lore.kernel.org/r/20210113090500.129644-4-hare@suse.de
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-22 21:14:07 -05:00