0001 What: /sys/bus/pci/devices/<BDF>/qat/state
0002 Date: June 2022
0003 KernelVersion: 5.20
0004 Contact: qat-linux@intel.com
0005 Description: (RW) Reports the current state of the QAT device. Write to
0006 the file to start or stop the device.
0007
0008 The values are:
0009
0010 * up: the device is up and running
0011 * down: the device is down
0012
0013
0014 It is possible to transition the device from up to down only
0015 if the device is up and vice versa.
0016
0017 This attribute is only available for qat_4xxx devices.
0018
0019 What: /sys/bus/pci/devices/<BDF>/qat/cfg_services
0020 Date: June 2022
0021 KernelVersion: 5.20
0022 Contact: qat-linux@intel.com
0023 Description: (RW) Reports the current configuration of the QAT device.
0024 Write to the file to change the configured services.
0025
0026 The values are:
0027
0028 * sym;asym: the device is configured for running crypto
0029 services
0030 * dc: the device is configured for running compression services
0031
0032 It is possible to set the configuration only if the device
0033 is in the `down` state (see /sys/bus/pci/devices/<BDF>/qat/state)
0034
0035 The following example shows how to change the configuration of
0036 a device configured for running crypto services in order to
0037 run data compression::
0038
0039 # cat /sys/bus/pci/devices/<BDF>/qat/state
0040 up
0041 # cat /sys/bus/pci/devices/<BDF>/qat/cfg_services
0042 sym;asym
0043 # echo down > /sys/bus/pci/devices/<BDF>/qat/state
0044 # echo dc > /sys/bus/pci/devices/<BDF>/qat/cfg_services
0045 # echo up > /sys/bus/pci/devices/<BDF>/qat/state
0046 # cat /sys/bus/pci/devices/<BDF>/qat/cfg_services
0047 dc
0048
0049 This attribute is only available for qat_4xxx devices.
