1What: /sys/kernel/debug/nx-crypto/* 2Date: March 2012 3KernelVersion: 3.4 4Contact: Kent Yoder <key@linux.vnet.ibm.com> 5Description: 6 7These debugfs interfaces are built by the nx-crypto driver, built in 8arch/powerpc/crypto/nx. 9 10Error Detection 11=============== 12 13errors: 14 A u32 providing a total count of errors since the driver was loaded. The 15 only errors counted here are those returned from the hcall, H_COP_OP. 16 17last_error: 18 The most recent non-zero return code from the H_COP_OP hcall. -EBUSY is not 19 recorded here (the hcall will retry until -EBUSY goes away). 20 21last_error_pid: 22 The process ID of the process who received the most recent error from the 23 hcall. 24 25Device Use 26========== 27 28aes_bytes: 29 The total number of bytes encrypted using AES in any of the driver's 30 supported modes. 31 32aes_ops: 33 The total number of AES operations submitted to the hardware. 34 35sha256_bytes: 36 The total number of bytes hashed by the hardware using SHA-256. 37 38sha256_ops: 39 The total number of SHA-256 operations submitted to the hardware. 40 41sha512_bytes: 42 The total number of bytes hashed by the hardware using SHA-512. 43 44sha512_ops: 45 The total number of SHA-512 operations submitted to the hardware. 46