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authorKent Yoder <key@linux.vnet.ibm.com>2012-04-12 01:38:54 -0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-05-16 01:05:45 -0400
commit175e0e23466185a861339796efc5b51958a48dc1 (patch)
tree115b35adac8ce6c04388f5fb634c43fd2eb1b3a0 /drivers/crypto/nx
parentfc482a86c38fc50ff30dcd8c990b19dae795beeb (diff)
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 'drivers/crypto/nx')
-rw-r--r--drivers/crypto/nx/nx_debugfs.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/crypto/nx/nx_debugfs.c b/drivers/crypto/nx/nx_debugfs.c
new file mode 100644
index 000000000000..7ab2e8dcd9b4
--- /dev/null
+++ b/drivers/crypto/nx/nx_debugfs.c
@@ -0,0 +1,103 @@
1/**
2 * debugfs routines supporting the Power 7+ Nest Accelerators driver
3 *
4 * Copyright (C) 2011-2012 International Business Machines Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 only.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 *
19 * Author: Kent Yoder <yoder1@us.ibm.com>
20 */
21
22#include <linux/device.h>
23#include <linux/kobject.h>
24#include <linux/string.h>
25#include <linux/debugfs.h>
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/crypto.h>
29#include <crypto/hash.h>
30#include <asm/vio.h>
31
32#include "nx_csbcpb.h"
33#include "nx.h"
34
35#ifdef CONFIG_DEBUG_FS
36
37/*
38 * debugfs
39 *
40 * For documentation on these attributes, please see:
41 *
42 * Documentation/ABI/testing/debugfs-pfo-nx-crypto
43 */
44
45int nx_debugfs_init(struct nx_crypto_driver *drv)
46{
47 struct nx_debugfs *dfs = &drv->dfs;
48
49 dfs->dfs_root = debugfs_create_dir(NX_NAME, NULL);
50
51 dfs->dfs_aes_ops =
52 debugfs_create_u32("aes_ops",
53 S_IRUSR | S_IRGRP | S_IROTH,
54 dfs->dfs_root, (u32 *)&drv->stats.aes_ops);
55 dfs->dfs_sha256_ops =
56 debugfs_create_u32("sha256_ops",
57 S_IRUSR | S_IRGRP | S_IROTH,
58 dfs->dfs_root,
59 (u32 *)&drv->stats.sha256_ops);
60 dfs->dfs_sha512_ops =
61 debugfs_create_u32("sha512_ops",
62 S_IRUSR | S_IRGRP | S_IROTH,
63 dfs->dfs_root,
64 (u32 *)&drv->stats.sha512_ops);
65 dfs->dfs_aes_bytes =
66 debugfs_create_u64("aes_bytes",
67 S_IRUSR | S_IRGRP | S_IROTH,
68 dfs->dfs_root,
69 (u64 *)&drv->stats.aes_bytes);
70 dfs->dfs_sha256_bytes =
71 debugfs_create_u64("sha256_bytes",
72 S_IRUSR | S_IRGRP | S_IROTH,
73 dfs->dfs_root,
74 (u64 *)&drv->stats.sha256_bytes);
75 dfs->dfs_sha512_bytes =
76 debugfs_create_u64("sha512_bytes",
77 S_IRUSR | S_IRGRP | S_IROTH,
78 dfs->dfs_root,
79 (u64 *)&drv->stats.sha512_bytes);
80 dfs->dfs_errors =
81 debugfs_create_u32("errors",
82 S_IRUSR | S_IRGRP | S_IROTH,
83 dfs->dfs_root, (u32 *)&drv->stats.errors);
84 dfs->dfs_last_error =
85 debugfs_create_u32("last_error",
86 S_IRUSR | S_IRGRP | S_IROTH,
87 dfs->dfs_root,
88 (u32 *)&drv->stats.last_error);
89 dfs->dfs_last_error_pid =
90 debugfs_create_u32("last_error_pid",
91 S_IRUSR | S_IRGRP | S_IROTH,
92 dfs->dfs_root,
93 (u32 *)&drv->stats.last_error_pid);
94 return 0;
95}
96
97void
98nx_debugfs_fini(struct nx_crypto_driver *drv)
99{
100 debugfs_remove_recursive(drv->dfs.dfs_root);
101}
102
103#endif