| What: /sys/bus/pci/devices/<BDF>/qat/state |
| Date: June 2022 |
| KernelVersion: 5.20 |
| Contact: qat-linux@intel.com |
| Description: (RW) Reports the current state of the QAT device. Write to |
| the file to start or stop the device. |
| |
| The values are: |
| |
| * up: the device is up and running |
| * down: the device is down |
| |
| |
| It is possible to transition the device from up to down only |
| if the device is up and vice versa. |
| |
| This attribute is only available for qat_4xxx devices. |
| |
| What: /sys/bus/pci/devices/<BDF>/qat/cfg_services |
| Date: June 2022 |
| KernelVersion: 5.20 |
| Contact: qat-linux@intel.com |
| Description: (RW) Reports the current configuration of the QAT device. |
| Write to the file to change the configured services. |
| |
| The values are: |
| |
| * sym;asym: the device is configured for running crypto |
| services |
| * dc: the device is configured for running compression services |
| |
| It is possible to set the configuration only if the device |
| is in the `down` state (see /sys/bus/pci/devices/<BDF>/qat/state) |
| |
| The following example shows how to change the configuration of |
| a device configured for running crypto services in order to |
| run data compression:: |
| |
| # 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/cfg_services |
| dc |
| |
| This attribute is only available for qat_4xxx devices. |
