summaryrefslogtreecommitdiffstats
path: root/kernel/Documentation/ABI/testing/debugfs-pfo-nx-crypto
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/Documentation/ABI/testing/debugfs-pfo-nx-crypto')
-rw-r--r--kernel/Documentation/ABI/testing/debugfs-pfo-nx-crypto45
1 files changed, 45 insertions, 0 deletions
diff --git a/kernel/Documentation/ABI/testing/debugfs-pfo-nx-crypto b/kernel/Documentation/ABI/testing/debugfs-pfo-nx-crypto
new file mode 100644
index 000000000..685d5a448
--- /dev/null
+++ b/kernel/Documentation/ABI/testing/debugfs-pfo-nx-crypto
@@ -0,0 +1,45 @@
+What: /sys/kernel/debug/nx-crypto/*
+Date: March 2012
+KernelVersion: 3.4
+Contact: Kent Yoder <key@linux.vnet.ibm.com>
+Description:
+
+ These debugfs interfaces are built by the nx-crypto driver, built in
+arch/powerpc/crypto/nx.
+
+Error Detection
+===============
+
+errors:
+- A u32 providing a total count of errors since the driver was loaded. The
+only errors counted here are those returned from the hcall, H_COP_OP.
+
+last_error:
+- The most recent non-zero return code from the H_COP_OP hcall. -EBUSY is not
+recorded here (the hcall will retry until -EBUSY goes away).
+
+last_error_pid:
+- The process ID of the process who received the most recent error from the
+hcall.
+
+Device Use
+==========
+
+aes_bytes:
+- The total number of bytes encrypted using AES in any of the driver's
+supported modes.
+
+aes_ops:
+- The total number of AES operations submitted to the hardware.
+
+sha256_bytes:
+- The total number of bytes hashed by the hardware using SHA-256.
+
+sha256_ops:
+- The total number of SHA-256 operations submitted to the hardware.
+
+sha512_bytes:
+- The total number of bytes hashed by the hardware using SHA-512.
+
+sha512_ops:
+- The total number of SHA-512 operations submitted to the hardware.