Clang warns that mlxplat_mlxcpld_msn201x_items is not going to be
emitted in the final assembly because it's only used in ARRAY_SIZE right
now, which is a compile time evaluation since the array's size is known.
drivers/platform/x86/mlx-platform.c:555:32: warning: variable
'mlxplat_mlxcpld_msn201x_items' is not needed and will not be emitted
[-Wunneeded-internal-declaration]
static struct mlxreg_core_item mlxplat_mlxcpld_msn201x_items[] = {
^
1 warning generated.
It appears this was a copy and paste mistake from when this item was
first added. Use the definition in mlxplat_mlxcpld_msn201x_data so that
Clang no longer warns.
Link: https://github.com/ClangBuiltLinux/linux/issues/141
Fixes: a49a41482f ("platform/x86: mlx-platform: Add support for new msn201x system type")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
The return value from platform_device_register_resndata() is not checked
correctly. The test is done against a wrong variable. This patch fix it.
Fixes: 0378123c58 ("platform/x86: mlx-platform: Add mlxreg-fan platform driver activation")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Change mlxreg-io platform driver configuration for MSN274x system types
from the default to MSN21xx.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Allow mlxreg-io platform driver activation for more system types, in
particular for MSN21xx, MSN201x types, which have reset causes bits
slightly different from the default configuration.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add support for ASIC hotplug device events for the all system types. The
ASIC hotplug event is sent in cases ASIC reaches the good health state or
dropped to the bad health state. The health state is used to change, when
device is reset or in case of some system failures. In such cases hwmon
uevent notification will be sent.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add mlxreg-fan platform driver activation. FAN driver uses the same regmap
infrastructure as others Mellanox platform drivers. Specific registers
description for default FAN platform data configuration are added to
mlx-platform. There are the registers for tachometers reading, PWM
control and FAN ownership control. The last one has a default value,
which is set at initialization time through the regmap infrastructure,
which is necessary for moving FAN control ownership from hardware to
software.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add mlxreg-io platform driver activation. Access driver uses the same
regmap infrastructure as others Mellanox platform drivers.
Specific registers description for default platform data configuration are
added to mlx-platform. There are the registers for resets control, reset
causes monitoring, programmable devices version reading and mux select
control. This platform data is passed to mlxreg-io driver. Also some
default values for the register are set at initialization time through
the regmap infrastructure, which are necessary for moving write protection
from the general purpose registers, which are used by mlxreg-io for
write access.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
v4-v5:
Changes added by Vadim:
- Add two new attributes for ASIC health and main power domain shutdown.
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add LED platform driver activation from mlx-platform. This LED driver uses
the same regmap infrastructure as others Mellanox platform drivers, so LED
specific registers description is added.
System LED configuration depends on system type. To support all the
relevant types per system type LED descriptions are defined for passing
to LED platform driver.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add new ODM system types, matched according to DMI_BOARD_NAME. The
supported ODM Ids are: VMOD0001, VMOD0002, VMOD0003, VMOD0004, VMOD0005.
Patch does not introduce new systems, but allows to ODM companies to set
DMI_BOARD_VENDOR and DMI_PRODUCT_NAME on their own. It assumes that ODM
company can't change DMI_BOARD_NAME.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
mlx-platform does not provide a bus number to i2c-mlxcpld, assuming it
is always one. On some x86 systems, other i2c drivers may probe before
i2c-mlxcpld, causing bus one to be busy.
Make mlx-platform determine which adapter number is free prior to
activating i2c-mlxpld, adjusting the mux base numbers accordingly.
Update the mlxreg-hotplug pdata similarly.
This adds an explicit mlx-platform build dependency on I2C, update the
Kconfig accordingly. Add the missing REGMAP dependency while we're at
it.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
[dvhart: Rewrite commit message more concisely]
[dvhart: Add build dependencies]
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
mlx-platform activates i2c-mux-reg, which creates buses needed by
mlxreg-hotplug. If the mlxreg-hotplug probe runs before the i2c-mux-reg
probe completes, it may attempt to connect a device to an adapter number
that has not been created yet, and fail.
Make mlx-platform driver record the highest bus number in mlxreg-hotplug
platform data and defer mlxreg-hotplug probe until all the buses are
created.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
[dvhart: rewrite commit message more concisely]
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add define for the channels number for mux device, instead of using
hardcoded value inside the code in order to improve code readability.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
It adds support for new Mellanox system types of basic classes qmb7, sn34,
sn37, containing systems QMB700 (40x200GbE InfiniBand switch), SN3700
(32x200GbE and 16x400GbE Ethernet switch) and SN3410 (6x400GbE plus
48x50GbE Ethernet switch). These are the Top of the Rack systems, equipped
with Mellanox COM-Express carrier board and switch board with Mellanox
Quantum device, which supports InfiniBand switching with 40X200G ports and
line rate of up to HDR speed or with Mellanox Spectrum-2 device, which
supports Ethernet switching with 32X200G ports line rate of up to HDR
speed.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
It adds support for new Mellanox system types of basic half unit size
class msn201x, containing system MSN2010 (18x10GbE plus 4x4x25GbE) half
and its derivatives. This is the Top of the Rack system, equipped with
Mellanox Small Form Factor carrier board and switch board with Mellanox
Spectrum device, which supports Ethernet switching with 32X100G ports line
rate of up to EDR speed.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
It adds support for new Mellanox system types of basic class msn274x,
containing system MSN2740 (32x100GbE Ethernet switch with cost reduction)
and its derivatives. These are the Top of the Rack system, equipped with
Mellanox Small Form Factor carrier board and switch board with Mellanox
Spectrum device, which supports Ethernet switching with 32X100G ports line
rate of up to EDR speed.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add dedicated structure with power cable setting for Mellanox msn21xx
family. These systems do not have a physical device for the power unit
controller. When the power cable is inserted or removed, the relevant
interrupt signal is handled, the status is updated, but no device is
associated with the signal.
Add definition for interrupt low aggregation signal. On system from
msn21xx family, low aggregation mask should be removed in order to allow
signal to hit CPU.
Fixes: 6613d18e90 ("platform/x86: mlx-platform: Move module from arch/x86")
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add define for the negative bus ID in order to use it in case no hotplug
device is associated with the hotplug interrupt signal. In this case,
the signal will be handled by the mlxreg-hotplug driver, but no device
will be associated with the signal.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add defines for the bus IDs, used for hotplug device topology to improve
code readability. Defines added for FAN and power units.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
devm_ioport_map() returns NULL on error but we accidentally check for
error pointers instead.
Fixes: c6acad68eb ("platform/mellanox: mlxreg-hotplug: Modify to use a regmap interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Vadim Pasternak <vadimp@melanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add hotplug platform driver un-registration in case regmap cache
synchronization failed. In such case hotplug platform driver
registration should be rolled back.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Missing prefix 'pn' in MODULE_ALIAS lines causes the module to
not load automatically. The driver should use MODULE_DEVICE_TABLE
together with existing mlxplat_dmi_table instead.
Fixes: 6613d18e90 ("platform/x86: mlx-platform: Move module from arch/x86")
Cc: Vadim Pasternak <vadimp@mellanox.com>
Cc: Bjørn Mork <bjorn@mork.no>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Add definitions for hotplug device masks and events offsets, in order to
specify explicitly all hardware registers allowed for IO operations for
all the drivers sharing register map with mlx-platform.
Extend register map configuration with the sets of writable, readable and
volatile registers to allow verification prior to the access. It prevents
unexpected access to hardware registers by the drivers, sharing register
map with mlx-platform.
Extend register map configuration with cache type field in order to have
ability to cache hardware register value, where possible. Use simple flat
array type for register lookups, which is most suitable in case when the
number of the registers is not too large.
Add at the end of probing routine calls to regcache_mark_dirty and
regcache_sync in order to sync register cache with hardware values. The
first routine indicate that hardware registers value required sync, the
second performs sync.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Restructure mlxreg header for unification of hotplug item definitions.
Unify hotplug items to allow any kind of item (power controller, fan
eeprom, psu eeprom, asic health) in common way.
Use a hardware independent regmap interface, enabling the support of
hotplug events over programmable devices attached to different bus
types, such as I2C, LPC, or SPI. Add a device node to the
mlxreg_core_data structure.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
[dvhart: spelling corrections, refactor device node introduction]
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Use Linux convention of nr instead of bus for i2c adapter number.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
[dvhart: refactored commit into smaller functional changes]
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
In preparation for making the hotplug driver build for different
architectures, move mlxcpld-hotplug.c to platform/mellanox and the
header to include/linux/platform_data as mlxreg.h to reflect the new
interface changes to come.
Replace references to CPLD with REG throughout the files, consistent
with the new name.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
[dvhart: update copyright, rewrite commit message]
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
The structures mlxplat_dev and mlxplat_hotplug are local to the source
and do not need to be in global scope, so make them static.
Cleans up sparse warnings:
symbol 'mlxplat_dev' was not declared. Should it be static?
symbol 'mlxplat_hotplug' was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
... and __initconst if applicable.
Based on similar work for an older kernel in the Grsecurity patch.
[JD: fix toshiba-wmi build]
[JD: add htcpen]
[JD: move __initconst where checkscript wants it]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
The patch contains several styling fixes:
- Make names of hotplug devices shorter;
- Change register offset assignment to defines;
- Add defines for the all event masks;
- Use PLATFORM_DEVID_NONE instead of -1;
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
There is an off-by-one error so we don't unregister priv->pdev_mux[0].
Also it's slightly simpler as a while loop instead of a for loop.
Fixes: 58cbbee239 ("x86/platform/mellanox: Introduce support for Mellanox systems platform")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Add calls for mlxcpld-hotplug platform driver registration/unregistration
and add platform hotplug data configurations. This driver, when registered
within system will handle system hot-plug events for the power suppliers,
power cables and fans (insertion and removing). These events are
controlled through CPLD Lattice device.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Since mlx-platform is not an architectural driver, it is moved out
of arch/x86/platform to drivers/platform/x86.
Relevant Makefile and Kconfig are updated.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
