This is moving core clock and clock gating init for Kirkwood to its
own file and adds a Kconfig option. Also init functions are added and
declared so they get called on of_clk_init.
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: NMike Turquette <mturquette@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

This is moving core clock and clock gating init for Dove to its own
file and adds a Kconfig option. Also init functions are added and
declared so they get called on of_clk_init.
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: NMike Turquette <mturquette@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

Based on the current common functions for core clocks and clock
gating control, new common functions are joined in a single file.
Given the opportunity, names of functions and structs are unified,
and also a Kconfig entry is added.
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: NMike Turquette <mturquette@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

Clock gates found on MVEBU SoCs get registered by a common function.
To allow specific SoCs to provide tweaks introduce flags to the clock
gate descriptor instead of filling up the common function SoC specific
tweaks.
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: NMike Turquette <mturquette@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

In case of error, function of_clk_get_by_name() returns
ERR_PTR() never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

This driver implements the support for the PCIe interfaces on the
Marvell Armada 370/XP ARM SoCs. In the future, it might be extended to
cover earlier families of Marvell SoCs, such as Dove, Orion and
Kirkwood.

The driver implements the hw_pci operations needed by the core ARM PCI
code to setup PCI devices and get their corresponding IRQs, and the
pci_ops operations that are used by the PCI core to read/write the
configuration space of PCI devices.

Since the PCIe interfaces of Marvell SoCs are completely separate and
not linked together in a bus, this driver sets up an emulated PCI host
bridge, with one PCI-to-PCI bridge as child for each hardware PCIe
interface.

In addition, this driver enumerates the different PCIe slots, and for
those having a device plugged in, it sets up the necessary address
decoding windows, using the mvebu-mbus driver.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: NBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

The current revision of the datasheet only mentions the gatable clocks
for the PCIe 0.0, 0.1, 0.2 and 0.3 interfaces, and forgot to mention
the ones for the PCIe 1.0, 1.1, 1.2, 1.3, 2.0 and 3.0
interfaces. After confirmation with Marvell engineers, this patch adds
the missing gatable clocks for those PCIe interfaces.

It also changes the name of the previously existing PCIe gatable
clocks, in order to match the naming using the datasheets.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Mike Turquette <mturquette@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

The Armada 370 has two gatable clocks for each PCIe interface, and we
want both of them to be enabled. We therefore make one of the two
clocks a child of the other, as we did for the sataX and sataXlnk
clocks on Armada XP.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Mike Turquette <mturquette@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

This function can be used to parse a bus-range property as specified by
device nodes representing PCI bridges.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

This function can be used to parse the device and function number from a
standard 5-cell PCI resource. PCI_SLOT() and PCI_FUNC() can be used on
the returned value obtain the device and function numbers respectively.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

This patch factors out common implementation patterns to reduce overall kernel
code and provide a means for host bridge drivers to directly obtain struct
resources from the DT's ranges property without relying on architecture specific
DT handling. This will make it easier to write archiecture independent host bridge
drivers and mitigate against further duplication of DT parsing code.

This patch can be used in the following way:

	struct of_pci_range_parser parser;
	struct of_pci_range range;

	if (of_pci_range_parser_init(&parser, np))
		; //no ranges property

	for_each_of_pci_range(&parser, &range) {

		/*
			directly access properties of the address range, e.g.:
			range.pci_space, range.pci_addr, range.cpu_addr,
			range.size, range.flags

			alternatively obtain a struct resource, e.g.:
			struct resource res;
			of_pci_range_to_resource(&range, np, &res);
		*/
	}

Additionally the implementation takes care of adjacent ranges and merges them
into a single range (as was the case with powerpc and microblaze).
Signed-off-by: NAndrew Murray <Andrew.Murray@arm.com>
Signed-off-by: NLiviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: NRob Herring <rob.herring@calxeda.com>
Tested-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: NLinus Walleij <linus.walleij@linaro.org>
Tested-by: NJingoo Han <jg1.han@samsung.com>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

Signed-off-by: NGiridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: NChad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

This fixes a bug where the iscsi class/driver did not do a put_device
when a sess/conn device was found. This also simplifies the interface
by not having to pass in some arguments that were duplicated and did
not need to be exported.
Reported-by: NZhao Hongjiang <zhaohongjiang@huawei.com>
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Acked-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

These enums have been separate since the dawn of SAS, mainly because the
latter is a procotol only enum and the former includes additional state
for libsas.  The dichotomy causes endless confusion about which one you
should use where and leads to pointless warnings like this:

drivers/scsi/mvsas/mv_sas.c: In function 'mvs_update_phyinfo':
drivers/scsi/mvsas/mv_sas.c:1162:34: warning: comparison between 'enum sas_device_type' and 'enum sas_dev_type' [-Wenum-compare]

Fix by eliminating one of them.  The one kept is effectively the sas.h
one, but call it sas_device_type and make sure the enums are all
properly namespaced with the SAS_ prefix.
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Modified thermal configuration to happen after interrupt registration
Added SAS controller configuration during initialization
Added error handling logic to handle I_T_Nexus errors and variants

[jejb: fix up tabs and spaces issues]
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Handled NCQ errors in the low level driver as the FW
is not providing the faulty tag for NCQ errors for libsas
to recover.

[jejb: fix checkpatch issues]
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Individual WWN read operations based on controller.
PM8081 - Read WWN from Flash VPD.
PM8088/89 - Read WWN from EEPROM.
PM8001 - Read WWN from NVM.
Signed-off-by: NSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Changed name in driver to pm80xx. Updated debug messages.
Signed-off-by: NSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Performing pci_free_consistent in tasklet had result in a core dump. So
allocated a new memory region for it. Fix for passing proper address
and operation in firmware flash update.
Signed-off-by: NSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Additional bar shift for new SPC firmware, applicable to device
id 0x8081 only.
Signed-off-by: NSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Implementation of SPCv/ve specific hardware functionality and
macros. Changing common functionalities wrt SPCv/ve operations.
Conditional checks for SPC specific operations.
Signed-off-by: NSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Implementation of interrupt handlers and tasklets to support
upto 64 interrupt for the device.
Signed-off-by: NSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Update of function prototype for common function to SPC and SPCv/ve.
Multiple queues implementation for IO.
Signed-off-by: NSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Memory allocation and configuration of multiple inbound and
outbound queues.
Signed-off-by: NSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Updated pci id table with device, vendor, subdevice and subvendor ids
for 8081, 8088, 8089 SAS/SATA controllers. Added SPCv/ve related macros.
Updated macros, hba info structure and other structures for SPCv/ve.
Update of structure and variable names for SPC hardware functionalities.
Signed-off-by: NSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: NAnand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: NJack Wang <jack_wang@usish.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

lpfc uses the generic checksum as well as the T10DIF one from the lib/
directory, so make sure they're selected.
Reported-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

scsi_send_eh_cmnd() is calling queuecommand() directly, so
it needs to check the return value here.
The only valid return codes for queuecommand() are 'busy'
states, so we need to wait for a bit to allow the LLDD
to recover.

Based on an earlier patch from Wen Xiong.

[jejb: fix confusion between msec and jiffies values and other issues]
[bvanassche: correct stall_for interval]
Cc: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Cc: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Share configuration option processing code between the dm cache
ctr and message functions.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Move process_config_option() in dm-cache-target.c to make the
next patch more readable.
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Generate a dm event when the amount of remaining thin pool metadata
space falls below a certain level.

The threshold is taken to be a quarter of the size of the metadata
device with a minimum threshold of 4MB.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Add a threshold callback to dm persistent data space maps.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Add a threshold callback function to the persistent data space map
interface for a subsequent patch to use.

dm-thin and dm-cache are interested in knowing when they're getting
low on metadata or data blocks.  This patch introduces a new method
for registering a callback against a threshold.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Allow the dm thin pool metadata device to be extended.

Whenever a pool is resumed, detect whether the size of the metadata
device has increased, and if so, extend the metadata to use the new
space.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Support extending a dm persistent data metadata space map.

The extend itself is implemented by switching back to the boostrap
allocator and pointing to the new space.  The extra bitmap indexes are
then allocated from the new space, and finally we switch back to the
proper space map ops and tweak the reference counts.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

If a thin pool is created in read-only-metadata mode then only open the
metadata device read-only.

Previously it was always opened with FMODE_READ | FMODE_WRITE.

(Note that dm_get_device() still allows read-only dm devices to be used
read-write at the moment: If I create a read-only linear device for the
metadata, via dmsetup load --readonly, then I can still create a rw pool
out of it.)
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Refactor device size functions in preparation for similar metadata
device resizing functions.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Use struct assignment rather than memcpy in dm cache.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Fix up some typos in dm-cache comments.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Correct the documented requirement on the return code from dm cache policy
lookup functions stated in the policy module header file.
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>

Fix some typos in dm-space-map-metadata.c error messages.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>