diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-driver-qat')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-qat | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-qat b/Documentation/ABI/testing/sysfs-driver-qat index 96834d103a..bbf329cf0d 100644 --- a/Documentation/ABI/testing/sysfs-driver-qat +++ b/Documentation/ABI/testing/sysfs-driver-qat @@ -95,3 +95,49 @@ Description: (RW) This configuration option provides a way to force the device i 0 This attribute is only available for qat_4xxx devices. + +What: /sys/bus/pci/devices/<BDF>/qat/rp2srv +Date: January 2024 +KernelVersion: 6.7 +Contact: qat-linux@intel.com +Description: + (RW) This attribute provides a way for a user to query a + specific ring pair for the type of service that it is currently + configured for. + + When written to, the value is cached and used to perform the + read operation. Allowed values are in the range 0 to N-1, where + N is the max number of ring pairs supported by a device. This + can be queried using the attribute qat/num_rps. + + A read returns the service associated to the ring pair queried. + + The values are: + + * dc: the ring pair is configured for running compression services + * sym: the ring pair is configured for running symmetric crypto + services + * asym: the ring pair is configured for running asymmetric crypto + services + + Example usage:: + + # echo 1 > /sys/bus/pci/devices/<BDF>/qat/rp2srv + # cat /sys/bus/pci/devices/<BDF>/qat/rp2srv + sym + + This attribute is only available for qat_4xxx devices. + +What: /sys/bus/pci/devices/<BDF>/qat/num_rps +Date: January 2024 +KernelVersion: 6.7 +Contact: qat-linux@intel.com +Description: + (RO) Returns the number of ring pairs that a single device has. + + Example usage:: + + # cat /sys/bus/pci/devices/<BDF>/qat/num_rps + 64 + + This attribute is only available for qat_4xxx devices. |