Documentation: update debugfs doc for Hisilicon HPRE

Update documentation describing DebugFS for function's QoS limiting.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/Documentation/ABI/testing/debugfs-hisi-hpre b/Documentation/ABI/testing/debugfs-hisi-hpre
index 68d4dcb..396de7b 100644 (file)
--- a/Documentation/ABI/testing/debugfs-hisi-hpre
+++ b/Documentation/ABI/testing/debugfs-hisi-hpre
@@ -27,6 +27,16 @@ Description: One HPRE controller has one PF and multiple VFs, each function
                has a QM. Select the QM which below qm refers to.
                Only available for PF.
 
+What:          /sys/kernel/debug/hisi_hpre/<bdf>/alg_qos
+Date:          Jun 2021
+Contact:       linux-crypto@vger.kernel.org
+Description:   The <bdf> is related the function for PF and VF.
+               HPRE driver supports to configure each function's QoS, the driver
+               supports to write <bdf> value to alg_qos in the host. Such as
+               "echo <bdf> value > alg_qos". The qos value is 1~1000, means
+               1/1000~1000/1000 of total QoS. The driver reading alg_qos to
+               get related QoS in the host and VM, Such as "cat alg_qos".
+
 What:          /sys/kernel/debug/hisi_hpre/<bdf>/regs
 Date:          Sep 2019
 Contact:       linux-crypto@vger.kernel.org