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From:   Giovanni Cabiddu <giovanni.cabiddu@intel.com>
To:     herbert@gondor.apana.org.au
Cc:     linux-crypto@vger.kernel.org, qat-linux@intel.com,
        Vlad Dronov <vdronov@redhat.com>,
        Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Subject: [PATCH v2 0/4] crypto: qat - enable configuration for 4xxx
Date:   Mon, 27 Jun 2022 09:36:48 +0100
Message-Id: <20220627083652.880303-1-giovanni.cabiddu@intel.com>
MIME-Version: 1.0
Organization: Intel Research and Development Ireland Ltd - Co. Reg. #308263 - Collinstown Industrial Park, Leixlip, County Kildare - Ireland
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qat_4xxx devices can be configured to allow either crypto or compression
operations. By default, devices are configured statically according
to following rule:
- odd numbered devices assigned to compression services
- even numbered devices assigned to crypto services

This set exposes two attributes in sysfs that allow to report and change
the state and the configuration of a QAT 4xxx device.
The first, /sys/bus/pci/devices/<BDF>/qat/state, allows to bring a
device down in order to change the configuration, and bring it up again.
The second, /sys/bus/pci/devices/<BDF>/qat/cfg_services, allows to
inspect the current configuration of a device (i.e. crypto or
compression) and change it.

    # cat /sys/bus/pci/devices/<BDF>/qat/state
    up
    # cat /sys/bus/pci/devices/<BDF>/qat/cfg_services
    sym;asym
    # echo down > /sys/bus/pci/devices/<BDF>/qat/state
    # echo dc > /sys/bus/pci/devices/<BDF>/qat/cfg_services
    # echo up > /sys/bus/pci/devices/<BDF>/qat/state
    # cat /sys/bus/pci/devices/<BDF>/qat/state
    dc

Changes from v1:
 - Updated target kernel version in documentation (from 5.19 to 5.20).
 - Fixed commit message in patch #1 and updated documentation in patch
   #4 after review from Vladis Dronov.

Giovanni Cabiddu (4):
  crypto: qat - expose device state through sysfs for 4xxx
  crypto: qat - change behaviour of adf_cfg_add_key_value_param()
  crypto: qat - relocate and rename adf_sriov_prepare_restart()
  crypto: qat - expose device config through sysfs for 4xxx

 Documentation/ABI/testing/sysfs-driver-qat    |  61 ++++++
 .../crypto/qat/qat_4xxx/adf_4xxx_hw_data.c    |   1 +
 .../crypto/qat/qat_4xxx/adf_4xxx_hw_data.h    |   1 +
 drivers/crypto/qat/qat_4xxx/adf_drv.c         |   6 +-
 drivers/crypto/qat/qat_common/Makefile        |   1 +
 .../crypto/qat/qat_common/adf_accel_devices.h |   1 +
 drivers/crypto/qat/qat_common/adf_cfg.c       |  41 +++-
 .../crypto/qat/qat_common/adf_common_drv.h    |   3 +
 drivers/crypto/qat/qat_common/adf_init.c      |  26 +++
 drivers/crypto/qat/qat_common/adf_sriov.c     |  28 +--
 drivers/crypto/qat/qat_common/adf_sysfs.c     | 191 ++++++++++++++++++
 11 files changed, 331 insertions(+), 29 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-driver-qat
 create mode 100644 drivers/crypto/qat/qat_common/adf_sysfs.c

-- 
2.36.1