1What: /sys/bus/pci/devices/<BDF>/qat/state 2Date: June 2022 3KernelVersion: 5.20 4Contact: qat-linux@intel.com 5Description: (RW) Reports the current state of the QAT device. Write to 6 the file to start or stop the device. 7 8 The values are: 9 10 * up: the device is up and running 11 * down: the device is down 12 13 14 It is possible to transition the device from up to down only 15 if the device is up and vice versa. 16 17 This attribute is only available for qat_4xxx devices. 18 19What: /sys/bus/pci/devices/<BDF>/qat/cfg_services 20Date: June 2022 21KernelVersion: 5.20 22Contact: qat-linux@intel.com 23Description: (RW) Reports the current configuration of the QAT device. 24 Write to the file to change the configured services. 25 26 The values are: 27 28 * sym;asym: the device is configured for running crypto 29 services 30 * dc: the device is configured for running compression services 31 32 It is possible to set the configuration only if the device 33 is in the `down` state (see /sys/bus/pci/devices/<BDF>/qat/state) 34 35 The following example shows how to change the configuration of 36 a device configured for running crypto services in order to 37 run data compression:: 38 39 # cat /sys/bus/pci/devices/<BDF>/qat/state 40 up 41 # cat /sys/bus/pci/devices/<BDF>/qat/cfg_services 42 sym;asym 43 # echo down > /sys/bus/pci/devices/<BDF>/qat/state 44 # echo dc > /sys/bus/pci/devices/<BDF>/qat/cfg_services 45 # echo up > /sys/bus/pci/devices/<BDF>/qat/state 46 # cat /sys/bus/pci/devices/<BDF>/qat/cfg_services 47 dc 48 49 This attribute is only available for qat_4xxx devices. 50