If bnx2i_map_ep_dbell_regs() then we accidentally return NULL instead of
an error pointer.  It results in a NULL dereference in
iscsi_if_ep_connect().

Fixes: cf4e6363 ("[SCSI] bnx2i: Add bnx2i iSCSI driver.")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The function hptiop_iop_request_callback_itl does not need to be in
global scope, so make it static.

Cleans up sparse warning:
"symbol 'hptiop_iop_request_callback_itl' was not declared. Should it
 be static?"
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Assign rxq to TCP connections in round robin mode to use all available
rxqs.
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Signed-off-by: NTyrel Datwyler <tyreld@linux.vnet.ibm.com>
Reviewed-by: NJames Smart <james.smart@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

A change in remote port removal introduced a spurious put which can
cause a premature structure teardown. The affects were most notable when
the driver attempted to unload as a null pointer would be hit.

Fix by removing the unnecessary put.
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

On link down, transport is calling driver to abort outstanding ios.
Driver erroneously rejects the abort if the port indicates it isn't
logged in - which will be the case after the link down. Thus, the io
can't clean up. This prevents reconnection at the transport level.

Fix by allowing abort to proceed.
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

virtio_scsi tries to do exception handling after the default 30 seconds
timeout expires.  However, it's better to let the host control the
timeout, otherwise with a heavy I/O load it is likely that an abort will
also timeout.  This leads to fatal errors like filesystems going
offline.

Disable the 'sd' timeout and allow the host to do exception handling,
following the precedent of the storvsc driver.

Hannes has a proposal to introduce timeouts in virtio, but this provides
an immediate solution for stable kernels too.

[mkp: fixed typo]
Reported-by: NDouglas Miller <dougmill@linux.vnet.ibm.com>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: linux-scsi@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

There's no need to use the static UTS_RELEASE string, since
utsname()->release contains the same.

This avoids rebuilding this file for every change of the release string.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

After commit 556e26a7 ("scsi: remove tsk_mgmt_response and
it_nexus_response transport methods"), the target driver support was
removed totally. Drop the residual.
Signed-off-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: NBart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add -ko to the module version similar to module version of other Chelsio
drivers.
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Avoid unnecessary snprintf() when formatting variables for display in
sysfs and switch to sysfs_match_string() for validating user input.
Reviewed-by: NBart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Since 9c58b395 ("scsi: scsi_devinfo: remove synchronous ALUA for NETAPP
devices") this code is unused.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NBart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NBart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

FC disks issue I/O directly to the host storage port driver, this is
diffirent to VHD disks where I/O is virtualized and timeout is handled
by the host VSP (Virtualization Service Provider).

FC disks are usually setup in a multipath system, and they don't want to
reset timer on I/O timeout. Timeout is detected by multipath as a good
time to failover and recover.
Signed-off-by: NLong Li <longli@microsoft.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The fields sense_data_size and sense_data are unitialized garbage from
the stack and are being copied back to userspace.  Fix this leak of
stack information by ensuring they are zero'd.

Detected by CoverityScan, CID#1435473 ("Uninitialized scalar variable")

Fixes: 423400e6 ("scsi: aacraid: Include HBA direct interface")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NDave Carroll <david.carroll@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Set lpfc driver revision to 11.4.0.1
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Beacon OFF from switch is rejected by driver.

Driver fails Beacon OFF if frequency is set to 0. As per fc-ls spec,
status, capability, frequency and duration fields are only applicable
for Beacon ON.

Remove frequency and type checks. Reject Beacon ON if duration is non
zero.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When running nvme detach-ns /dev/nvme0n1 -n 1 command, the nvmet lpfc
driver crashes with this stack dump:

kernel BUG at /root/NVME/lpfc_8.4/lpfc_sli.c:1393!
invalid opcode: 0000 [#1] SMP
Workqueue: nvmet-fc-cpu0 nvmet_fc_do_work_on_cpu [nvmet_fc]
 lpfc_sli4_issue_wqe+0x357/0x440 [lpfc]
 lpfc_nvmet_xmt_fcp_abort+0x36b/0x5c0 [lpfc]
 nvmet_fc_abort_op+0x30/0x50 [nvmet_fc]
 nvmet_fc_do_work_on_cpu+0xd9/0x130 [nvmet_fc]
 process_one_work+0x14e/0x410
 worker_thread+0x116/0x490
 kthread+0xc7/0xe0
 ret_from_fork+0x3f/0x70

Crash is due to an uninitialized iocbq->vport pointer.

Explicitly set the iocbq->vport field to phba->pport in
lpfc_nvmet_sol_fcp_issue_abort as it does all abort iocbq initialization
in the routine.  Using phba->pport is ok because target does not support
NPIV instances.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

During every reset, IOCBs are allocated. So, at one point, number of
allocated IOCBs reaches maximum limit and lpfc_sli_next_iotag fails.

Allocate IOCBs only during initialization. Reuse them after every reset
instead of allocating new set of IOCBs.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

OS crashes after the completion of firmware download.

Failure in posting SCSI SGL buffers because number of SGL buffers is
less than total count. Some of the pending IOs are not completed by
driver. SGL buffers for these IOs are not added back to the list.
Pending IOs are not completed because lpfc_wq_list list is initialized
before completion of pending IOs.

Postpone lpfc_wq_list reinitialization by moving
lpfc_sli4_queue_destroy() after lpfc_hba_down_post().
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In a server with an 8G adapter and a 32G adapter, running NVME and FCP,
the server would crash with the following stack.

RIP: 0010: ... lpfc_nvme_register_port+0x38/0x420 [lpfc]
 lpfc_nlp_state_cleanup+0x154/0x4f0 [lpfc]
 lpfc_nlp_set_state+0x9d/0x1a0 [lpfc]
 lpfc_cmpl_prli_prli_issue+0x35f/0x440 [lpfc]
 lpfc_disc_state_machine+0x78/0x1c0 [lpfc]
 lpfc_cmpl_els_prli+0x17c/0x1f0 [lpfc]
 lpfc_sli_sp_handle_rspiocb+0x39b/0x6b0 [lpfc]
 lpfc_sli_handle_slow_ring_event_s3+0x134/0x2d0 [lpfc]
 lpfc_work_done+0x8ac/0x13b0 [lpfc]
 lpfc_do_work+0xf1/0x1b0 [lpfc]

Crash, on the 8G adapter, is due to a vport which does not have a nvme
local port structure. It's not supposed to have one. NVME is not
supported on the 8G adapter, so the NVME PRLI, which started this flow
shouldn't have been sent in the first place.

Correct discovery engine to recognize when on an SLI3 rport, which
doesn't support SLI3, if the rport supports only NVME, don't send a NVME
PRLI. Instead, as no FC4 will be used, a LOGO is sent.  If rport is FCP
and NVME, only execute the SCSI PRLI.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Since unsol rcv ISR and command cmpl ISR both access/lock this list,
separate get/put lists will reduce contention.

Replaced
struct list_head lpfc_nvmet_ctx_list;
with
struct list_head lpfc_nvmet_ctx_get_list;
struct list_head lpfc_nvmet_ctx_put_list;
and all correpsonding locks and counters.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Removed unnecessary bzero of context area. Due to size of sg list, added
a substantial delay and played havoc on cpu caches.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Vport creation fails for SLI-3 adapters.

Mailbox submission fails because mailbox interrupt is disabled. Mailbox
interrupt is disabled during port reset.

Do reset only for physical port.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

First line of nvme_info output is not consistent. There is an Extra
colon in the format.

First line of output will contain one of the following strings:
NVME Initiator Enabled
NVME Target Enabled
NVME Disabled
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

There is a null pointer dereference that can happen in the FOF interrupt
handler.

The driver was not setting up cq->assoc_qp_for sli4_hba->oas_cq.

Initialize cq->assoc_qp before accessing it.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

There is a change for abort dev for v3 hw: add registers to configure
unaborted iptt for a device, and then inform this to logic.
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code to fill the interface of phy_hard_reset, phy_get_max_linkrate,
and phy enable/disable.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code for interface get_wideport_bitmap.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code to prepare internal abort command.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code to itct setup and free for v3 hw.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code to prepare ATA frame for v3 hw
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code to prepare SMP frame.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code to prepare SSP frame and deliver it to hardware.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add v3 cq interrupt handler slot_complete_v3_hw().

Note: The slot error handling needs to be further refined in the future
to examine all fields in the error record, and handle appropriately,
instead of current solution - just report SAS_OPEN_REJECT.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code to initialise interrupts and add some interrupt handlers.

Also add function hisi_sas_v3_destroy_irqs() to clean-up irqs upon
module unloading.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code to configure PHYs for v3 hw.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add code to initialise v3 hardware.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add the code to initialise the controller which is based on pci device
in hisi_sas_v3_hw.c

The core controller routines are still in hisi_sas_main.c; some common
initialisation functions are also exported from hisi_sas_main.c

For pci-based controller, the device properties, like phy count and sas
address are read from the firmware, same as platform device-based
controller.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add skeleton driver for v3 hw in hisi_sas_v3_hw.c

File hisi_sas_v3_hw.c will serve 2 purposes:
- probing and initialisation of the controller based on pci device
- hw layer for v3-based controllers

The controller design is quite similar to v2 hw in hip07.

However key differences include:
-All v2 hw bugs are fixed (hopefully), so workarounds are not required
-support for device deregistration
-some interrupt modifications
-configurable max device support
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>