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| author | Kent Yoder <key@linux.vnet.ibm.com> | 2012-04-12 05:38:54 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-05-16 15:05:45 +1000 |
| commit | 175e0e23466185a861339796efc5b51958a48dc1 (patch) | |
| tree | 115b35adac8ce6c04388f5fb634c43fd2eb1b3a0 /Documentation/ABI/testing/debugfs-pfo-nx-crypto | |
| parent | fc482a86c38fc50ff30dcd8c990b19dae795beeb (diff) | |
| download | linux-175e0e23466185a861339796efc5b51958a48dc1.tar.bz2 | |
powerpc/crypto: debugfs routines and docs for the nx device driver
These routines add debugfs files supporting the Power7+ in-Nest encryption
accelerator driver.
Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'Documentation/ABI/testing/debugfs-pfo-nx-crypto')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-pfo-nx-crypto | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-pfo-nx-crypto b/Documentation/ABI/testing/debugfs-pfo-nx-crypto new file mode 100644 index 000000000000..685d5a448423 --- /dev/null +++ b/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. |