The fsl-mc bus and dpio driver files use a combination of GPL-2.0 and
GPL-2.0+ OR BSD-3-Clause licenses. Add SPDX tags and delete the full
license text, keeping the existing license for each file. Add GPL-2.0
for Kconfig / Makefile, where not present.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function its_fsl_mc_msi_init is local to the source and does
not need to be in global scope, so make it static.
Cleans up sparse warning:
symbol 'its_fsl_mc_msi_init' was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update the doc file to comply with the rst format.
It's not integrated into the documentation build structure yet,
since it's still located in drivers/staging.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Minor cosmetic changes to the DPAA2 overview documentation file.
Add a reference to the mc-bus driver sysfs documentation.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
With the declarations of its_fsl_mc_msi_init/cleanup() now removed
from fsl-mc-private.h, irq-gic-v3-its-fsl-mc-msi.c only needs a
couple of definitions from mc.h, so include that header directly.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function that enables fsl-mc msi interrupts doesn't need
to be explicitly called from the fsl-mc bus driver initialization
routine.
Mark it to be independently called at system init; this is in line
with how things are handled by other GICv3 irqchip users.
Due to this change we now have an unused cleanup function, so
remove it.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The DPAA2 objects involved (DPMNG, DPMCP, DPRC) are used by the fsl-mc
bus infrastructure only, so group the APIs and structs into
fsl-mc-private.h.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A lot of API and associated structures are not used by current code, so
remove them.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
All DPIO service API functions receive a dpaa2_io service pointer
as parameter (NULL meaning any service will do) which indicates
the hardware resource to be used to execute the specified command.
There isn't however any available API for obtaining such a service
reference that could be used further, effectively forcing the users
to always request a random service for DPIO operations.
(The DPIO driver holds internally an array mapping services to cpus,
and affine services can be indirectly requested by a couple of API
functions: dpaa2_io_service_register and dpaa2_io_service_rearm
use the cpu id provided by the user to select the corresponding
service)
This patch adds a function for selecting a DPIO service based on
the specified cpu id. If the user provides a "don't care" value
for the cpu, we revert to the default behavior and return the next
DPIO, taken in a round-robin fashion from a list of available
services.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Acked-by: Roy Pledge <roy.pledge@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Devices on MC bus can be deferred because of dependencies on other modules
(such as IOMMU). Those are not the actual errors; as probing is again
done by the kernel at later stages. So this patch avoids the error print
in such case.
Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Following is the current scenario when the devices are probed:
FSL_MC Bus probe ---> dprc probe ---> dprc devices scan --->
probe devices in DPRC container ---> allocate IRQ's
In case the devices being probed in the DPRC container need the IRQ's;
probing of that device will fail.
In current scenario the devices which need IRQ's such as DPIO gets
deferred because they aren't registered when first time the probing
of these devices is done in the dprc scan.
So they are probed once IRQ's have been allocated.
In case where DPRC probing itself gets deferred, which does in case
IOMMU is enabled; all the devices in DPRC container gets probed before
IRQ's are allocated. This causes devices using IRQ's (such as DPIO)
to fail.
So having IRQ's allocated before any of the devices in the DPRC container
are probed is more legitimate.
After this patch following is the flow of execution:
FSL_MC Bus probe ---> dprc probe ---> dprc devices scan --->
allocate IRQ's ---> probe of devices in DPRC container.
Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Reviewed-by: Bharat Bhushan <bharat.bhushan@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As per APIs each mc-portal is of 64K size while currently
16bits (type u16) is used to store size of mc-portal.
In these cases upper bit of portal size gets truncated.
Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
Acked-By: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
error could be unitialized when it is used as a return value in
fsl_mc_device_add(). So fix up the warning by properly setting it.
Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace strcmp() based device type checks with the standard device
model type.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The MC bus has different types of devices and this is supported by
device model. This patch adds initial support for device types
(defines them, adds helpers and sets the device type).
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A lot of error checks are doubled by debug WARN_ONs. Given that the
driver was thoroughly debugged and is in a stable state, it's time to
drop them.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These WARN_ONs shouldn't trigger unless something went very wrong.
Since the driver is in a stable state let's remove these debug
WARN_ONs.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
No need to use EXPORT_SYMBOL() so switch to the GPL variant.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The bus driver is mixing EXPORT_SYMBOL()/EXPORT_SYMBOL_GPL() usage.
Change it to consistently use EXPORT_SYMBOL_GPL().
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These couple of functions are not yet used so lets remove them
for now and add them back when/if needed.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These functions are only used within this driver so no need for
EXPORT_SYMBOL().
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There's an unfinished implementation of reference counting for dpaa2_io
structure using atomics. Since it's unused lets remove it for now and,
if needed at a later time, make use of krefs instead of rolling our
own refcounting.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Couple of API functions are not used so lets drop them together with
the associated structures and defines.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For some dpio functions, a cpu id parameter value of -1 is
valid and means "any". But when trying to validate this param
value against an upper limit, in this case num_possible_cpus(),
we risk obtaining the wrong result due to an implicit cast.
Avoid an incorrect check result by explicitly comparing the
cpu id with the "any" value before verifying the upper bound.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Throughout the driver we use == 0 / != 0 to check strcmp() returns except
this place, so fix it.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The previous fix removed the equal to zero comparisons by the strcmps and
now the function always returns true. Revert this change to restore the
original correctly functioning code.
Detected by CoverityScan, CID#1452267 ("Constant expression result")
This reverts commit b93ad9a067.
Fixes: b93ad9a067 ("staging: fsl-mc: be consistent when checking strcmp() return")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver makes use of GENERIC_MSI_IRQ_DOMAIN which requires arch
support so, on architectures that don't have it, the kernel will fail
to build. Add explicit dependency on architectures that were
compile-tested, thus fixing compilation for the ones that don't
implement GENERIC_MSI_IRQ_DOMAIN.
Fixes: 0327485027 ("staging: fsl-mc: allow the driver compile multi-arch")
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use resource_size() function on resource objects instead of
explicit computation.
This patch fixes the following coccinelle warning:
drivers/staging/fsl-mc/bus/dprc-driver.c:620:35-38: ERROR: Missing
resource_size with mc_dev -> regions
Signed-off-by: Cihangir Akturk <cakturk@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The recent reshuffling of header files left one type definition
missing in some configurations:
In file included from drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h:39:0,
from drivers/staging/fsl-dpaa2/ethernet/dpaa2-ethtool.c:34:
drivers/staging/fsl-dpaa2/ethernet/../../fsl-mc/include/dpaa2-io.h:86:1: error: unknown type name 'irqreturn_t'; did you mean 'irq_count'?
irqreturn_t dpaa2_io_irq(struct dpaa2_io *obj);
I have not bisected this to the exact patch that introduced the problem,
but the solution is obvious, we just need to include the header that
contains the type.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Writing to the register using writel does the CPU to LE conversion down the
line, so it's not required here. Doing it breaks portal configuration on
big endian kernels.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add an alternate dependency on COMPILE_TEST, thus leaving
this driver compile on other architectures.
Also, other drivers depending on the bus are updated to depend
on ARCH_LAYERSCAPE until they'll also be made multi-arch.
This was compiled tested on:
- booke powerpc (corenet{32,64}_smp_defconfig)
- x86 (i386_defconfig, x86_64_defconfig, needs CONFIG_OF)
- arm64 (defconfig)
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since there's no real constrain in MC to do only atomic 64-bit we can
enable this driver on 32-bit platforms too.
Include linux/io-64-nonatomic-hi-lo.h to make quad device io apis used
in the driver available on 32-bit platforms.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As raw device io functions are not portable and don't handle byte-order
(triggering suspicion that endianness isn't handled well) switch to
using the standard api.
Since MC expects LE byte-order and the upper layers already take care
of that, we need to trick the device io api by doing a LE -> CPU
conversion just before calling it. This way, the CPU -> LE conversion
done in the api puts the data back in the right byte-order. Obviously,
for reads the extra step is mirrored: there's a CPU -> LE conversion
following the API call.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use correct format specifier for phys_addr_t variables (%pa) instead
of %llx. This fixes these warnings on 32 bit targets:
"format '%llx' expects argument of type 'long long unsigned int',
but argument 4 has type 'phys_addr_t' [-Wformat=]"
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The bus driver relies on generic msi domain ops.
Fix compilation for architectures that don't provide it (e.g. x86_64).
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nothing from linux/irqchip/arm-gic-v3.h is used, so the #include can be
safely dropped.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
No need to use arch-specific memory barriers; switch to using generic
ones. The rmb()s were useless so drop them.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Stuart Yoder <stuyoder@gmail.com>
Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Cc: devel@driverdev.osuosl.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here's the large set of staging and iio driver patches for 4.13-rc1.
After over 500 patches, we removed about 200 more lines of code than we
added, not great, but we added some new IIO drivers for unsupported
hardware, so it's an overall win.
Also here are lots of small fixes, and some tty core api additions (with
the tty maintainer's ack) for the speakup drivers, those are finally
getting some much needed cleanups and are looking much better now than
before. Full details in the shortlog.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO updates from Greg KH:
"Here's the large set of staging and iio driver patches for 4.13-rc1.
After over 500 patches, we removed about 200 more lines of code than
we added, not great, but we added some new IIO drivers for unsupported
hardware, so it's an overall win.
Also here are lots of small fixes, and some tty core api additions
(with the tty maintainer's ack) for the speakup drivers, those are
finally getting some much needed cleanups and are looking much better
now than before. Full details in the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (529 commits)
staging: lustre: replace kmalloc with kmalloc_array
Staging: ion: fix code style warning from NULL comparisons
staging: fsl-mc: make dprc.h header private
staging: fsl-mc: move mc-cmd.h contents in the public header
staging: fsl-mc: move mc-sys.h contents in the public header
staging: fsl-mc: fix a few implicit includes
staging: fsl-mc: remove dpmng API files
staging: fsl-mc: move rest of mc-bus.h to private header
staging: fsl-mc: move couple of definitions to public header
staging: fsl-mc: move irq domain creation prototype to public header
staging: fsl-mc: turn several exported functions static
staging: fsl-mc: delete prototype of unimplemented function
staging: fsl-mc: delete duplicated function prototypes
staging: fsl-mc: decouple the mc-bus public headers from dprc.h
staging: fsl-mc: drop useless #includes
staging: fsl-mc: be consistent when checking strcmp() return
staging: fsl-mc: move comparison before strcmp() call
staging: speakup: make function ser_to_dev static
staging: ks7010: fix spelling mistake: "errror" -> "error"
staging: rtl8192e: fix spelling mistake: "respose" -> "response"
...
dprc.h is only used in the mc bus driver so move it together with the
sources thus making it private.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mc-cmd.h contains some low level functions used to encode and decode
commands to the MC. They are used by the drivers so move them to the
public headers and get rid of the mc-cmd.h header.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mc-sys.h contains the API to send commands to the MC and is used
by drivers. Move it to the public headers and get rid of the mc-sys.h
header.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Few files using byte order macros but did not explicitly
included the required kernel header, so add it.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dpmng.h & dpmng.c files expose an API of just one function which is only
used by the bus driver. Move that single API in the bus source as static
and remove the two files.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
All the mc-bus.h contents is only used privately in the bus driver so
move everything to the private header and get rid of the mc-bus.h
header file.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Define dev_is_fsl_mc() and the bus type definition (fsl_mc_bus_type)
are used externally so move them to the public header.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
