When device missing event arrives, device_remove_in_progress bit will be
set and hence driver has to stop sending IOCTL commands.Now the check has
been added in IOCTL path to test device_remove_in_progress bit is set, if
so then IOCTL will be failed printing failure message.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

scsi: mpt3sas: Fix for incorrect numbers for MSIX vectors enabled when non RDPQ card is enumerated first.

No. of MSIX vectors supported = min (Total no. of CPU cores,
MSIX vectors supported by card)

when RDPQ is disabled "max_msix_vectors" module parameter which was
declared as global was set to '8' and hence if there are more than one card
in system among which if RDPQ disabled card is enumerated first then only 8
MSIX vectors was getting enabled for all the cards(including RDPQ enabled
card,which can support more than 8 MSIX vectors).

Used local variable instead of global variable ,if RDPQ is disabled this
local variable is set to '8' else it is set to "max_msix_vectors" (by
default this is set to -1, whose value can be set by user during driver
load time).So now regardless of whether RDPQ disabled card is enumerated
first or RDPQ enabled card is enumerated first , MSIX vectors enabled
depends on the cards capability.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

mpt3sas crashes on resume after suspend with WarpDrive flash cards.  The
reply_post_host_index array is not set back up after the resume, and we
deference a stale pointer in _base_interrupt().

[   47.309711] BUG: unable to handle kernel paging request at ffffc90001f8006c
[   47.318289] IP: [<ffffffffc00863ef>] _base_interrupt+0x49f/0xa30 [mpt3sas]
[   47.326749] PGD 41ccaa067 PUD 41ccab067 PMD 3466c067 PTE 0
[   47.333848] Oops: 0002 [#1] SMP
...
[   47.452708] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.7.0 #6
[   47.460506] Hardware name: Dell Inc. OptiPlex 990/06D7TR, BIOS A18 09/24/2013
[   47.469629] task: ffffffff81c0d500 ti: ffffffff81c00000 task.ti: ffffffff81c00000
[   47.479112] RIP: 0010:[<ffffffffc00863ef>]  [<ffffffffc00863ef>] _base_interrupt+0x49f/0xa30 [mpt3sas]
[   47.490466] RSP: 0018:ffff88041d203e30  EFLAGS: 00010002
[   47.497801] RAX: 0000000000000001 RBX: ffff880033f4c000 RCX: 0000000000000001
[   47.506973] RDX: ffffc90001f8006c RSI: 0000000000000082 RDI: 0000000000000082
[   47.516141] RBP: ffff88041d203eb0 R08: ffff8804118e2820 R09: 0000000000000001
[   47.525300] R10: 0000000000000001 R11: 00000000100c0000 R12: 0000000000000000
[   47.534457] R13: ffff880412c487e0 R14: ffff88041a8987d8 R15: 0000000000000001
[   47.543632] FS:  0000000000000000(0000) GS:ffff88041d200000(0000) knlGS:0000000000000000
[   47.553796] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.561632] CR2: ffffc90001f8006c CR3: 0000000001c06000 CR4: 00000000000406f0
[   47.570883] Stack:
[   47.575015]  000000001d211228 ffff88041d2100c0 ffff8800c47d8130 0000000000000100
[   47.584625]  ffff8804100c0000 100c000000000000 ffff88041a8992a0 ffff88041a8987f8
[   47.594230]  ffff88041d203e00 ffffffff81111e55 000000000000038c ffff880414ad4280
[   47.603862] Call Trace:
[   47.608474]  <IRQ>
[   47.610413]  [<ffffffff81111e55>] ? call_timer_fn+0x35/0x120
[   47.620539]  [<ffffffff81100a1f>] handle_irq_event_percpu+0x7f/0x1c0
[   47.629061]  [<ffffffff81100b8c>] handle_irq_event+0x2c/0x50
[   47.636859]  [<ffffffff81103fff>] handle_edge_irq+0x6f/0x130
[   47.644654]  [<ffffffff8102fbf3>] handle_irq+0x73/0x120
[   47.652011]  [<ffffffff810c6ada>] ? atomic_notifier_call_chain+0x1a/0x20
[   47.660854]  [<ffffffff817e374b>] do_IRQ+0x4b/0xd0
[   47.667777]  [<ffffffff817e160c>] common_interrupt+0x8c/0x8c
[   47.675635]  <EOI>

Move the reply_post_host_index array setup into
mpt3sas_base_map_resources(), which is also in the resume path.

Cc: stable@vger.kernel.org
Signed-off-by: NGreg Edwards <gedwards@fireweed.org>
Acked-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Trivial non-functional changes for a couple annoying things:

  1) Functions local to files are not declared static, which is
  frustrating when reading the code because it's non-obvious at first
  glance what's actually called from other files.

  2) Set-but-unused variables abound, presumably to mask -Wunused-result
  errors in the past. None of these are flagged today though (with one
  exception noted below), so remove them.

Fixing (2) exposed the fact that we improperly ignore the return value
of scsi_device_reprobe() in _scsih_reprobe_lun(). Fixing the calling
code to deal with the potential error is non-trivial, so for now just
WARN().
Signed-off-by: NCalvin Owens <calvinowens@fb.com>
Acked-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

With the exception of a single call to wait_for_doorbell_int(), all this
conditional sleeping code is dead. So delete it.
Signed-off-by: NCalvin Owens <calvinowens@fb.com>
Acked-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Replaced mpt3sas_base_flush_reply_queues() with
mpt3sas_base_sync_reply_irqs(),as mpt3sas_base_flush_reply_queues()
skips over reply queues that are currently busy (i.e. being handled by
interrupt processing in another core). If a reply queue is busy, then
call to synchronize_irq()in mpt3sas_base_sync_reply_irqs()make sures the
other core has finished flushing the queue and completed any calls to
the mid-layer scsi_done() routine.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In-order to handle this 'MPI2_EVENT_ACTIVE_CABLE_EXCEPTION' event,
driver need to follow below steps,
1. Unmask the 'MPI2_EVENT_ACTIVE_CABLE_EXCEPTION' event,
so that FW can notify this event to host driver.
2. After receiving this event, add this event to AEN event queue,
for notifying this event to applications.
3. Then Print below message in kernel logs if the event data's reason
code is zero,
"Currently an active cable with ReceptacleID <ID_Value> cannot be powered
and devices connected to this active cable will not be seen. This active
cable requires <PowerValue_in_mW> of power"

This event is only for Intruder/Cutlass HBAs.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

'struct timeval' will have its tv_sec value overflow on 32-bit systems
in year 2038 and beyond. This patch replaces the use of struct timeval
for computing mpi_request.TimeStamp, and instead uses ktime_t which
provides 64-bit seconds value. The timestamp computed remains
unaffected (milliseconds since Unix epoch).
Signed-off-by: NTina Ruchandani <ruchandani.tina@gmail.com>
Reviewed-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Acked-by: NSathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Rename SCSI_MAX_SG_SEGMENTS to SG_CHUNK_SIZE, which means the amount
we fit into a single scatterlist chunk.

Rename SCSI_MAX_SG_CHAIN_SEGMENTS to SG_MAX_SEGMENTS.

Will move these 2 generic definitions to scatterlist.h later.
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Acked-by: Bart Van Assche <bart.vanassche@sandisk.com> (for ib_srp changes)
Signed-off-by: NMing Lin <ming.l@ssi.samsung.com>
Acked-by: NTejun Heo <tj@kernel.org>
Reviewed-by: NSagi Grimberg <sagi@grimberg.me>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In _base_make_ioc_operational(), we walk ioc->reply_queue_list and pull
a pointer out of successive elements of ioc->reply_post[] for each entry
in that list if RDPQ is enabled.

Since the code pulls the pointer for the next iteration at the bottom of
the loop, it triggers the a KASAN dump on the final iteration:

    BUG: KASAN: slab-out-of-bounds in _base_make_ioc_operational+0x47b7/0x47e0 [mpt3sas] at addr ffff880754816ab0
    Read of size 8 by task modprobe/305
    <snip>
    Call Trace:
     [<ffffffff81dfc591>] dump_stack+0x4d/0x6c
     [<ffffffff814c9689>] print_trailer+0xf9/0x150
     [<ffffffff814ceda4>] object_err+0x34/0x40
     [<ffffffff814d1231>] kasan_report_error+0x221/0x530
     [<ffffffff814d1673>] __asan_report_load8_noabort+0x43/0x50
     [<ffffffffa0043637>] _base_make_ioc_operational+0x47b7/0x47e0 [mpt3sas]
     [<ffffffffa0049a51>] mpt3sas_base_attach+0x1991/0x2120 [mpt3sas]
     [<ffffffffa0053c93>] _scsih_probe+0xeb3/0x16b0 [mpt3sas]
     [<ffffffff81ebd047>] local_pci_probe+0xc7/0x170
     [<ffffffff81ebf2cf>] pci_device_probe+0x20f/0x290
     [<ffffffff820d50cd>] really_probe+0x17d/0x600
     [<ffffffff820d56a3>] __driver_attach+0x153/0x190
     [<ffffffff820cffac>] bus_for_each_dev+0x11c/0x1a0
     [<ffffffff820d421d>] driver_attach+0x3d/0x50
     [<ffffffff820d378a>] bus_add_driver+0x44a/0x5f0
     [<ffffffff820d666c>] driver_register+0x18c/0x3b0
     [<ffffffff81ebcb76>] __pci_register_driver+0x156/0x200
     [<ffffffffa00c8135>] _mpt3sas_init+0x135/0x1000 [mpt3sas]
     [<ffffffff81000423>] do_one_initcall+0x113/0x2b0
     [<ffffffff813caa5a>] do_init_module+0x1d0/0x4d8
     [<ffffffff81273909>] load_module+0x6729/0x8dc0
     [<ffffffff81276123>] SYSC_init_module+0x183/0x1a0
     [<ffffffff8127625e>] SyS_init_module+0xe/0x10
     [<ffffffff828fe7d7>] entry_SYSCALL_64_fastpath+0x12/0x6a

Fix this by pulling the value at the beginning of the loop.
Signed-off-by: NCalvin Owens <calvinowens@fb.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NJens Axboe <axboe@fb.com>
Acked-by: NChaitra Basappa <chaitra.basappa@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Calling synchronize_irq() right before free_irq() is quite useless. On
one hand the IRQ can easily fire again before free_irq() is entered, on
the other hand free_irq() itself calls synchronize_irq() internally (in
a race condition free way), before any state associated with the IRQ is
freed.

Patch was generated using the following semantic patch:
// <smpl>
@@
expression irq;
@@
-synchronize_irq(irq);
 free_irq(irq, ...);
// </smpl>
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NSreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Deallocate resources before reallocating of the same in retry_allocation
path of _base_allocate_memory_pools()
Signed-off-by: NSuganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

mpt3sas: Remove cpumask_clear for zalloc_cpumask_var and don't free free_cpu_mask_var before reply_q

Removed cpumask_clear as it is not required for zalloc_cpumask_var and
free free_cpumask_var before freeing reply_q.
Signed-off-by: NSuganath prabu Subramani <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Track msix of each IO and use the same msix for issuing abort to timed
out IO. With this driver will process IO's reply first followed by TM.
Signed-off-by: NSuganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
Signed-off-by: NChaitra P B <chaitra.basappa@avagotech.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Added support for configurable Chain Frame Size. Calculate the
Chain Message Frame size from the IOCMaxChainSegementSize (iocfacts).
Applicable only for mpt3sas/SAS3.0 HBA's.
Signed-off-by: NSuganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
Signed-off-by: NChaitra P B <chaitra.basappa@avagotech.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Module parameter to enable/disable configuring affinity hint for msix
vector.  SMP affinity feature can be enabled/disabled by setting module
parameter "smp_affinity_enable" to 1/0.  By default this feature is
enabled. (smp_affinity_enable = 1 enabled).
Signed-off-by: NSuganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
Signed-off-by: NChaitra P B <chaitra.basappa@avagotech.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Driver assumes HighPriority credit as part of Global credit. But,
Firmware treats HighPriority credit value and global cedits as two
different values. Changed host queue algorithm to treat global credits
and highPriority credits as two different values.
Signed-off-by: NSuganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
Signed-off-by: NChaitra P B <chaitra.basappa@avagotech.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Updated hardware description headers with MPI v2.6 and
mpt3sas_pci_table[] with vendor_ids, device_ids of Cutlass and Intruder
HBA which have support for 4 ports.
Signed-off-by: NSuganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
Signed-off-by: NChaitra P B <chaitra.basappa@avagotech.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

It might happen that we try to free an already freed pointer.
Reported-by: NMaurizio Lombardi <mlombard@redhat.com>
Signed-off-by: NTomas Henzl <thenzl@redhat.com>
Acked-by: NChaitra P B <chaitra.basappa@avagotech.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Modified the mpt3sas driver to have a single driver module which
supports both SAS 2.0 & SAS 3.0 HBA devices.

* Added SAS 2.0 HBA device IDs to the mpt3sas_pci_table pci table.

* Created two separate SCSI host templates for SAS2 and SAS3 HBAs so
  that, during the driver load time driver can use corresponding host
  template(based the pci device ID) while registering a scsi host
  adapter instance for that pci device.

* Registered two IOCTL devices, mpt2ctl is for SAS2 HBAs & mpt3ctl for
  SAS3 HBAs. Also updated the code to make sure that mpt2ctl device
  processes only those ioctl cmds issued for the SAS2 HBAs and mpt3ctl
  device processes only those ioctl cmds issued for the SAS3 HBAs.

* Added separate indexing for SAS2 and SAS3 HBAs.

* Replaced compile time check 'MPT2SAS_SCSI' to run time check
  'hba_mpi_version_belonged' whereever needed.

* Aliased this merged driver to mpt2sas using MODULE_ALIAS.

* Moved global varaible 'driver_name' to per adapter instance variable.

* Created two raid function template and used corresponding raid
  function templates based on the run time check
  'hba_mpi_version_belonged'.

* Moved mpt2sas_warpdrive.c file from mpt2sas to mpt3sas folder and
  renamed it as mpt3sas_warpdrive.c.

* Also renamed the functions in mpt3sas_warpdrive.c file to follow
  current driver function name convention.

* Updated the Makefile to build mpt3sas_warpdrive.o file for these
  WarpDrive-specific functions.

* Also in function mpt3sas_setup_direct_io(), used sector_div() API
  instead of division operator (which gives compilation errors on 32 bit
  machines).

* Removed mpt2sas files, mpt2sas directory & mpt3sas_module.c file.

* Added module parameter 'hbas_to_enumerate' which permits using this
  merged driver as a legacy mpt2sas driver or as a legacy mpt3sas
  driver.

  Here are the available options for this module parameter:

   0 - Merged driver which enumerates both SAS 2.0 & SAS 3.0 HBAs
   1 - Acts as legacy mpt2sas driver, which enumerates only SAS 2.0 HBAs
   2 - Acts as legacy mpt3sas driver, which enumerates only SAS 3.0 HBAs

* Removed mpt2sas entries from SCSI's Kconfig and Makefile files.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

setpci reset on nytro warpdrive card along with sysfs access and cli
ioctl access resulted in kernel oops

1. pci_access_mutex lock added to provide synchronization between IOCTL,
   sysfs, PCI resource handling path

2. gioc_lock spinlock to protect list operations over multiple
   controllers

This patch is ported from commit 6229b414 ("mpt2sas: setpci reset
kernel oops fix").
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Added OEM Gen2 PnP ID branding names from mpt2sas driver.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Ported the following list of WarpDrive-specific patches:

1. commit 0bdccdb0 ("mpt2sas: WarpDrive
   New product SSS6200 support added")

2. commit 82a45258 ("mpt2sas: WarpDrive
   Infinite command retries due to wrong scsi command entry in MPI
   message")

3. commit ba96bd0b ("mpt2sas: Support
   for greater than 2TB capacity WarpDrive")

4. commit 4da7af94 ("mpt2sas: Do not
   retry a timed out direct IO for Warpdrive")

5. commit daeaa9df ("mpt2sas: Avoid type
   casting for direct I/O commands").

Also set the mpt2_ioctl_iocinfo adapter_type to:

1. MPT3_IOCTL_INTERFACE_SAS3 for Gen3 HBAs

2. MPT2_IOCTL_INTERFACE_SAS2_SSS6200 for Warp Drive

3. MPT2_IOCTL_INTERFACE_SAS2  for other Gen2 HBAs
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch stops the driver to invoke kthread (which remove the dead
ioc) for some time while EEH recovery has started.

This patch is a port of commit b4730fb6 ("mpt2sas: fix for driver
fails EEH, recovery from injected pci bus error")'.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

1. Do not enable MSI-X vectors for SAS2008 B0 controllers

2. Enable a single MSI-X vector for the following controller:

   a. SAS2004
   b. SAS2008
   c. SAS2008_1
   d. SAS2008_2
   e. SAS2008_3
   f. SAS2116_1
   g. SAS2116_2

3. Enable Combined Reply Post Queue Support (i.e. 96 MSI-X vectors)
   for Gen3 Invader/Fury C0 and above revision HBAs

4. Enable Combined Reply Post Queue Support (i.e. 96 MSI-X vectors)
   for all Intruder and Cutlass HBAs
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Gen2 HBAs use MPI scatter-gather lists whereas Gen3 HBAs use IEEE
scatter-gather lists. Modify the common code part in such a way that it
will build IEEE SGL tables for Gen3 HBAs and MPI SGL tables for Gen2
HBAs.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Currently there is a logging level option provided for each of our
drivers in the kernel configuration utility. Users can enable this
option to get more verbose information. By default it is enabled.

Only when this option is enabled will the functions which display the
required information get compiled in.

As we are merging the both drivers we can no longer provide this
configuration option. Remove the SCSI_MPTXSAS_LOGGING entry from Kconfig
and unconditionally enable logging (by removing the #ifdef
CONFIG_SCSI_MPT3SAS_LOGGING preprocessor check conditions) so that all
functions which are defined to display more verbose information get
compiled in.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

1. Use 'hba_mpi_version_belonged' IOC varable to uniquely identify each
individual generation driver functionality at runtime.

2. Declare global variable 'driver_name' and use this variable while
reserving PCI regions and while allocating the IRQs.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

1. Added mpt2sas driver related macros in mpt3sas header files

2. Made scsi host's, raid class', pci's, ioctl's callback functions
global so that both drivers can use them.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

"VendorID"   "DeviceID"  "SubsystemVendor ID"   "SubsystemDevice ID"  Cisco Branding String
0x1000         0x97           0x1137                 0x154           Cisco 9300-8i 12Gbps SAS HBA
0x1000         0x97           0x1137                 0x155           Cisco 12G Modular SAS Pass through Controller
0x1000         0x97           0x1137                 0x156           UCS C3X60 12G SAS Pass through Controller
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

mpt3sas: Return host busy error status to SML when DMA mapping of scatter gather list fails for a SCSI command

scsi_dma_map API will return a negative value (i.e. -ENOMEM)
if DMA mapping of sg lists fails and zero if the sg list in the
SCSI cmd is NULL. But drivers doesn't handled sg list DMA mapping
failure case properly.

So, Updated the code to return host busy error status to SCSI MID Layer(SML),
when DMA mapping of scatter gather list fails for a SCSI command.
So that SML will retry this SCSI cmd after some time.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Add the following OEM's branding to the mpt3sas driver.

"VendorID"   "DeviceID"  "SubsystemVendor ID"   "SubsystemDevice ID"  Cisco Branding String
0x1000         0x97         SVID = 0x1137             0x014C          Cisco 9300-8E 12G SAS HBA
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Added the following Dell branding to the mpt3sas driver.

"VendorID"   "DeviceID"  "SubsystemVendor ID"  "SubsystemDevice ID"  Dell Branding String
0x1000        0x0097          0x1028                 0x1F46            DELL 12Gbps HBA
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

mpt3sas: Get IOC_FACTS information using handshake protocol only after HBA card gets into READY or Operational state.

Driver initialization fails if driver tries to send IOC facts request message
when the IOC is in reset or in a fault state.

This patch will make sure that

 1.Driver to send IOC facts request message only if HBA is in operational or
   ready state.

 2.If IOC is in fault state, a diagnostic reset would be issued.

 3.If IOC is in reset state then driver will wait for 10 seconds to exit out
   of reset state.  If the HBA continues to be in reset state, then the HBA
   wouldn't be claimed by the driver.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

In this patch, increased the number of MSIX vector support for SAS3 C0 HBAs to
up-to 96.

Following are changes that are done in this patch

1. This feature is enabled only for SAS3 C0 and higher revision cards and also
only when reply post free queue count is greater than 8.

2. To support this feature 12 SupplementalReplyPostHostIndex system interfaces
are used. MSI-X index numbered from 0 to 7 use the first
SupplementalReplyPostHostIndex system interface to update its corresponding
ReplyPostHostIndex values, MSI-X index numbered from 8 to 15 will use the
second SupplementalReplyPostHostIndex system interface and so on. These 12
SuppementalReplyPostHostIndex system interfaces address are saved in the array
replyPostRegisterIndex[].

3. As each SupplementalReplyPostHostIndex register supports 8 MSI-X
vectors. So MSIxIndex field in these register must contain a value between 0
and 7.

4. After processing the reply descriptors from a reply post free queues then
update the new reply post host index value in ReplyPostHostIndex field and
(msix_index mod 8) value in MSIxIndex field of SupplementalReplyPostHostIndex
register. The Address of this SupplementalReplyPostHostIndex register is
retrived from (msix_index/8)th entry of replyPostRegisterIndex[] array.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Driver crashes if the BIOS do not set up at least one
memory I/O resource. This failure can happen if the device is too
slow to respond during POST and is missed by the BIOS, but Linux
then detects the device later in the boot process.

Based on a patch from Timothy Pearson <tpearson@raptorengineeringinc.com>
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Added a support to set cpu affinity mask for each MSIX vector enabled
by the HBA. So that, running the irqbalancer will balance interrupts among
the cpus.

Change_set:
1. Added affinity_hint varable of type cpumask_var_t in adapter_reply_queue
   structure. And allocated a memory for this varable by calling
   alloc_cpumask_var.
2. Call the API irq_set_affinity_hint for each MSIx vector to affiniate it
   with calculated cpus at driver inilization time.
3. While freeing the MSIX vector, call this same API to release the cpu
   affinity mask for each MSIx vector by providing the NULL value in
   cpumask argument.
4. then call the free_cpumask_var API to free the memory allocated in step 2.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

Copyright, Trademark & Confidentiality legal statements throughout the
source code changed from LSI to Avago.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>