Added fixups for the OROM parsing code after testing with BIOS OROM
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Adding EFI variable retrieving for OEM parameters. Still need GUID and
variable name.

Also updated the data struct for oem parameters and hex file for firmware
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
[fix CONFIG_EFI=n compile error]
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

We need to scan the OROM for signature and grab the OEM parameters. We
also need to do the same for EFI. If all fails then we resort to user
binary blob, and if that fails then we go to the defaults.

Share the format with the create_fw utility so that all possible sources
of the parameters are in-sync.
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Allow each controller to be identified via sysfs.

# cat /sys/class/scsi_host/host13/isci_id
1
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Until we synchronize against device removal this limits the damage of
use after free bugs to the driver's own objects.  Unless we implement
reference counting we need to ensure at least a subset of a remote
device is valid at all times.  We follow the lead of other libsas
drivers that also preallocate devices.

This also enforces maximum remote device accounting at the lldd layer,
but the core may still run out of RNC's before we hit this limit.
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

isci_host_by_id() should have been a clue that an array would have been
a simpler approach.
Reported-by: NJames Bottomley <James.Bottomley@suse.de>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Undo the open coded and incorrect translation of the oem parameter sas
address to its libsas expected format.
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Moved the firmware loading from per adapter to per PCI device. This should
prevent firmware from being loaded twice becuase of 2 SCU controller per
PCI device. We do have to do it per PCI device because request_firmware()
requires a struct device passed in.
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

The proc_name field in struct scsi_host_template is exported through sysfs and
allows userspace tools to identify the driver behind a particular SCSI host
controller.

Initialize this field so that userspace tools can easily identify isci host
controllers through sysfs.
Signed-off-by: NHavard Skinnemoen <hskinnemoen@google.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Add basic support for handling/reporting error interrupts.
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

The indirection is unecessary and broken in the current case that assigns the
handlers based on a not up-to-date pdev->msix_enabled value.

Route the handlers directly to the requisite core routines.

Todo: hook up error interrupt handling
Reported-by: NJeff Garzik <jeff@garzik.org>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: NEdmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

We no longer use the loglevel parameter. Remove.
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Support for the up to 2x4-port 6Gb/s SAS controllers embedded in the
chipset.

This is a snapshot of the first publicly available version of the driver,
commit 4c1db2d0 in the 'historical' branch.

   git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci.git historical
Signed-off-by: NMaciej Trela <maciej.trela@intel.com>
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
Signed-off-by: NEdmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>