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The sysfs description contains redundancy on returned and allowed values
list, due to the described sysfs is read-write. Rewrite.
Acked-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Cc: Adam Guerin <adam.guerin@intel.com>
Cc: Tomasz Kowallik <tomaszx.kowalik@intel.com>
Cc: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Cc: Wojciech Ziemba <wojciech.ziemba@intel.com>
Cc: Fiona Trahe <fiona.trahe@intel.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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kernel test robot and Stephen Rothwell reported htmldocs warning:
Documentation/ABI/testing/sysfs-driver-qat:24: WARNING: Unexpected indentation.
The warning isn't caused by Date: field pointed by the warning, but rather
by sysfs example that isn't in literal code block.
Add the code block marker.
Link: https://lore.kernel.org/linux-next/20220711204932.333379b4@canb.auug.org.au/
Link: https://lore.kernel.org/linux-doc/202207090803.TEGI95qw-lkp@intel.com/
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: d4cfb144f60551 ("crypto: qat - expose device config through sysfs for 4xxx")
Acked-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Cc: Wojciech Ziemba <wojciech.ziemba@intel.com>
Cc: Adam Guerin <adam.guerin@intel.com>
Cc: Fiona Trahe <fiona.trahe@intel.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Vladis Dronov <vdronov@redhat.com>
Cc: Tomasz Kowallik <tomaszx.kowalik@intel.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Acked-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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qat_4xxx devices can be configured to allow either crypto or compression
operations. At the moment, devices are configured statically according to
the following rule:
- odd numbered devices assigned to compression services
- even numbered devices assigned to crypto services
Expose the sysfs attribute /sys/bus/pci/devices/<BDF>/qat/cfg_services
to allow to detect the configuration of a device and to change it.
The `cfg_service` attribute is only exposed for qat_4xxx devices and it
is limited to two configurations: (1) "sym;asym" for crypto services and
"dc" for compression services.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Co-developed-by: Tomasz Kowallik <tomaszx.kowalik@intel.com>
Signed-off-by: Tomasz Kowallik <tomaszx.kowalik@intel.com>
Reviewed-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Fiona Trahe <fiona.trahe@intel.com>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Reviewed-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Expose the device state through an attribute in sysfs and allow to
change it. This is to stop and shutdown a QAT device in order to change
its configuration.
The state attribute has been added to a newly created `qat` attribute
group which will contain all _QAT specific_ attributes.
The logic that implements the sysfs entries is part of a new file,
adf_sysfs.c. This exposes an entry point to allow the driver to create
attributes.
The function that creates the sysfs attributes is called from the probe
function of the driver and not in the state machine init function to
allow the change of states even if the device is in the down state.
In order to restore the device configuration between a transition from
down to up, the function that configures the devices has been abstracted
into the HW data structure.
The `state` attribute is only exposed for qat_4xxx devices.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Co-developed-by: Tomasz Kowallik <tomaszx.kowalik@intel.com>
Signed-off-by: Tomasz Kowallik <tomaszx.kowalik@intel.com>
Reviewed-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Fiona Trahe <fiona.trahe@intel.com>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Reviewed-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Bagas Sanjaya
Giovanni Cabiddu