Update driver version from 27.100.00.00 to 27.101.00.00.
Signed-off-by: NSuganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Sometimes Aero controllers appears to be returning bad data (0) for
doorbell register read and if retries are performed immediately after the
bad read, they return good data.

Workaround is added to retry read from doorbell registers for maximum three
times if driver get the zero.  Added functions base_readl_aero for Aero IOC
and base_readl for gen35 and other controllers.
Signed-off-by: NSuganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Adding flag "is_aero_ioc" to differentiate aero based controllers from
other gen35 controllers.
Signed-off-by: NSuganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Modify driver version to 27.100.00.00 (which is equivalent to PH8 OOB
driver)
Signed-off-by: NSuganath Prabu <suganath-prabu.subramani@broadcom.com>
Reviewed-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

No functional changes. This section of code "wait for IOC to be
operational" is used in many places across the driver.  Factor this code
out into a new mpt3sas_wait_for_ioc().
Signed-off-by: NSuganath Prabu <suganath-prabu.subramani@broadcom.com>
Reviewed-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Added new #define variable IOC_OPERATIONAL_WAIT_COUNT and it replaces hard
coded value '10' in all the places where driver is waiting for the IOC to
become operational.
Signed-off-by: NSuganath Prabu <suganath-prabu.subramani@broadcom.com>
Reviewed-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Updating MPI headers to the latest version 2.6.7 to add support to the
driver to detect the new 3816 and 3916 chip based controllers.  Separate
out firmware image data from mpi2_ioc.h to new file mpi2_image.h
Signed-off-by: NSuganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

All the uses have been removed, delete the macro.
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NSuganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

These macros can help identify specific logging uses and eventually perhaps
reduce object sizes.
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NSuganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

scsi: mpt3sas: Split _base_reset_handler(), mpt3sas_scsih_reset_handler() and mpt3sas_ctl_reset_handler()

Split each of these functions in three functions - one function per reset
phase. This patch does not change any functionality but makes the code
easier to read.

Note: it is much easier to review the git diff -w output after having
applied this patch than by reviewing the patch itself.
Signed-off-by: NBart Van Assche <bart.vanassche@wdc.com>
Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Chaitra P B <chaitra.basappa@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Since ioc->shost_recovery is set after ioc->reset_in_progress_mutex is
obtained, if concurrent resets are issued there is a short time during
which ioc->reset_in_progress_mutex is locked and ioc->shost_recovery ==
0. Avoid that this can cause trouble by unconditionally locking
ioc->shost_recovery.
Signed-off-by: NBart Van Assche <bart.vanassche@wdc.com>
Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Chaitra P B <chaitra.basappa@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Make _base_build_nvme_prp() easier to read by introducing a structure
to access NVMe command fields.
Signed-off-by: NBart Van Assche <bart.vanassche@wdc.com>
Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Chaitra P B <chaitra.basappa@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Updated driver version to "26.100.00.00"
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

scsi: mpt3sas: As per MPI-spec, use combined reply queue for SAS3.5 controllers when HBA supports more than 16 MSI-x vectors.

Presently driver is using combined reply queue feature when MSI-x vectors >
8 for both SAS3 and SAS3.5 controllers.  But as per MPI-spec,

1. For SAS3 controllers, driver should use combined reply queue when HBA
supports more than 8 MSI-x vectors.

2. For SAS3.5 controllers, driver should use combined reply queue when HBA
supports more than 16 MSI-x vectors.

Modified driver code to use combined reply queue for SAS3 controllers when
HBA supports > 8 MSI-x vectors and for SAS3.5 controllers when HBA supports
> 16 MSI-x vectors.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

scsi: mpt3sas: Fix, False timeout prints for ioctl and other internal commands during controller reset.

When an ioctl is sent to FW, and if there is a controller reset issued
before ioctl gets completed, then in controller reset path all the pending
ioctl commands are terminated from "mpt3sas_ctl_reset_handler" function.
This will wake up the waiting ioctl commands in ioctl path and print
timeouts which are actually not timeouts.

Introduced "mpt3sas_base_check_cmd_timeout" function to check and print
whether command got timed out (or) terminated due to Host reset.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Update driver version to match OOB/internal driver version.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

1) Manufacturing Page 11 contains parameters to control internal
   firmware behavior. Based on AddlFlags2 field FW/Driver behaviour can
   be changed, (flag tm_custom_handling is used for this)

a) For PCIe device, protocol level reset should be used if flag
   tm_custom_handling is 0.  Since Abort Task Set, LUN reset and Target
   reset will result in a protocol level reset. Drivers should issue
   only one type of this reset, if that fails then it should escalate to
   a controller reset (diag reset/OCR).

b) If the driver has control over the TM reset timeout value, then
   driver should use the value exposed in PCIe Device Page 2 for pcie
   device (field ControllerResetTO).
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Added function _base_display_fwpkg_version, which sends FWUpload request
to pull FW package version from FW Image Header.  Now driver prints FW
package version in addition to FW version if the PackageVersion is
valid.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In function _scsih_add_device, for each device connected to an
enclosure, driver reads the enclosure page(To get details like enclosure
handle, enclosure logical ID, enclosure level etc.)

With this patch, instead of reading enclosure page everytime, driver
maintains a list for enclosure device(During enclosure add event,
enclosure device is added to the list and removed from the list on
delete events) and uses the enclosure page from the list.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Introduces Chain lookup table/tracker and implements accessing chain
buffer using smid.  Removed link list based access of chain buffer which
requires lock and allocated as many chains needed.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Instead of allocating RDPQ array (This stores the address's of each RDPQ
pools) at run time, now it will be allocated once during driver load
time and same will be reused during host reset operation also (instead
of allocating & freeing this buffer on the fly during every host reset
operation) and then freed during driver unload.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch fixes sparse warnings and bugs on big endian systems.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The newly added code mixes up phys_addr_t/resource_size_t with dma_addr_t
and void pointers, as seen from these compiler warning:

drivers/scsi/mpt3sas/mpt3sas_base.c: In function '_base_get_chain_phys':
drivers/scsi/mpt3sas/mpt3sas_base.c:235:21: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
  base_chain_phys  = (void *)ioc->chip_phys + MPI_FRAME_START_OFFSET +
                     ^
drivers/scsi/mpt3sas/mpt3sas_base.c: In function '_clone_sg_entries':
drivers/scsi/mpt3sas/mpt3sas_base.c:427:20: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
    sgel->Address = (dma_addr_t)dst_addr_phys;
                    ^
drivers/scsi/mpt3sas/mpt3sas_base.c:438:7: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
       (dma_addr_t)buff_ptr_phys;
       ^
drivers/scsi/mpt3sas/mpt3sas_base.c:444:10: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
          (dma_addr_t)buff_ptr_phys;

Both dma_addr_t and phys_addr_t may be wider than a pointer, so we must
avoid the conversion to pointer types. This also helps readability.

A second problem is treating MMIO addresses from a 'struct resource'
as addresses that can be used for DMA on that device. In almost all
cases, those are the same, but on some of the more obscure architectures,
PCI memory address 0 is mapped into the CPU address space at a nonzero
offset. I don't have a good fix for that, so I'm adding a comment here,
plus a WARN_ON() that triggers whenever the phys_addr_t number is
outside of the low 32-bit address space and causes a straight overflow
when assigned to the 32-bit sgel->Address.

Fixes: 182ac784 ("scsi: mpt3sas: Introduce Base function for cloning.")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Sending I/O through 32 bit descriptors to Ventura series of controller
results in IO timeout on certain conditions. This error only occurs on
systems with high I/O activity.

Changes in this patch will prevent driver from using 32 bit descriptor
and use 64 bit Descriptors
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

All scsi IO's and config request's data buffer and sgl are cloned to
system memory in _clone_sg_entries before submitting it to firmware.
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

For MPI Endpoint/Mcpu, driver should double buffer data buffer/SGLs.
This is normally copied from host to internal memory of IOC by DMA
engine of PCI device. Since the interface to DMA from host to mCPU is
not present for Mcpu/MPI Endpoint device, driver does double copy of
those buffers directly to the mCPU memory region via BAR0 region.

Introduced API to calculate and return BAR0 mapped host buffer's
physical and virtual address for the provided smid.
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add device ID and flag for Andromeda/MPI Endpoint.

[mkp: typo]
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch finishes all outstanding SCSI IO commands (but not other commands,
e.g., task management) in the shutdown and unload paths.

It first waits for the commands to complete (this is done after setting
'ioc->remove_host = 1 ', which prevents new commands to be queued) then it
flushes commands that might still be running.

This avoids triggering error handling (e.g., abort command) for all commands
possibly completed by the adapter after interrupts disabled.

[mauricfo: introduced something in commit message.]
Signed-off-by: NSreekanth Reddy <sreekanth.reddy@broadcom.com>
Tested-by: NMauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: NMauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Performance improvement using block layer tag.

Curent driver gets scsiio tracker and free smid from link list and array
based tracking managed by driver.  Accessing list in main io path is
performance pentaly because of protection using spinlock
"scsi_lookup_lock".

In this patch:

1. Driver removes all link list access from main io path and
   use scmd->request->tag to get free smid.

2. Instead of holding 'struct scsiio_tracker' in its own pool
   driver can embed it into the scsi command.

Driver provides cmd_size in scsi_host_template, so that struct
scsiio_tracker is preallocated by scsi mid layer for each scsi command.
Signed-off-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Move the check for outstanding commands out of the function allowing us
to simplify the overall code.
Signed-off-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Abstract accesses to the scsi_lookup array by introducing
mpt3sas_get_st_from_smid().
Signed-off-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The newly added base_make_prp_nvme function triggers a build warning on
some 32-bit configurations:

drivers/scsi/mpt3sas/mpt3sas_base.c: In function 'base_make_prp_nvme':
drivers/scsi/mpt3sas/mpt3sas_base.c:1664:13: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
  msg_phys = (dma_addr_t)mpt3sas_base_get_pcie_sgl_dma(ioc, smid);

After taking a closer look, I found that the problem is that the new
code mixes up pointers and dma_addr_t values unnecessarily.

This changes it to use the correct types consistently, which lets us get
rid of a lot of type casts in the process. I'm also renaming some
variables to avoid confusion between physical and dma address spaces
that are often distinct.

Fixes: 016d5c35 ("scsi: mpt3sas: SGL to PRP Translation for I/Os to NVMe devices")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NSathya Prakash Veerichetty <sathya.prakash@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Updated mpt3sas driver version to 17.100.00.00
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Sets nvme device queue depth, name and displays device capabilities
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Below Functions are added in various paths to support NVMe drive
addition.

_scsih_pcie_add_device
_scsih_pcie_device_add
_scsih_pcie_device_init_add
_scsih_check_pcie_access_status
_scsih_pcie_check_device

mpt3sas_get_pdev_by_handle

mpt3sas_config_get_pcie_device_pg0
mpt3sas_config_get_pcie_device_pg2
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

* Mpt3sas driver uses the NVMe Encapsulated Request message to send an
  NVMe command to an NVMe device attached to the IOC.

* Normal I/O commands like reads and writes are passed to the
  controller as SCSI commands and the controller has the ability to
  translate the commands to NVMe equivalent.

* This encapsulated NVMe command is used by applications to send
  direct NVMe commands to NVMe drives.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

* Added support for translating the SGLs associated with incoming
commands either to IEE SGL or NVMe PRPs for NVMe devices.

* The hardware translation of IEEE SGL to NVMe PRPs has limitations
and if a command cannot be translated by hardware then it will go to
firmware and the firmware needs to translate it. This will have a
performance impact. To avoid that, the driver proactively checks
whether the translation will be done in hardware or not. If not, then
driver translates.

[mkp: clarified commit message]
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

1) Added support for probing pcie device and adding NVMe drives to SML
and driver's internal list pcie_device_list.

2) Added support for determing NVMe as boot device.

3) Added nvme device support for call back functions scan_finished
target_alloc,slave_alloc,target destroy and slave destroy.

 a) During scan, pcie devices are probed and added to SML to drivers
internal list.

 b) target_alloc & slave alloc API's allocates resources for
(MPT3SAS_TARGET & MPT3SAS_DEVICE) private datas and holds information
like handle, target_id etc.

 c) slave_destroy & target_destroy are called when driver unregisters
or removes device. Also frees allocated resources and info.
Signed-off-by: NChaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Bump mpt3sas driver version to v16.100.00.00
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Display chassis slot information along with other drive location
parameters such as slot number and connector name in the logs if
chassis slot validity bit is set in 'SAS Enclosure Page 0'.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>