1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
 2/* Copyright 2019 NXP */
 3
 4#include <linux/debugfs.h>
 5#include "compat.h"
 6#include "debugfs.h"
 7#include "regs.h"
 8#include "intern.h"
 9
10static int caam_debugfs_u64_get(void *data, u64 *val)
11{
12	*val = caam64_to_cpu(*(u64 *)data);
13	return 0;
14}
15
16static int caam_debugfs_u32_get(void *data, u64 *val)
17{
18	*val = caam32_to_cpu(*(u32 *)data);
19	return 0;
20}
21
22DEFINE_DEBUGFS_ATTRIBUTE(caam_fops_u32_ro, caam_debugfs_u32_get, NULL, "%llu\n");
23DEFINE_DEBUGFS_ATTRIBUTE(caam_fops_u64_ro, caam_debugfs_u64_get, NULL, "%llu\n");
24
25#ifdef CONFIG_CAAM_QI
26/*
27 * This is a counter for the number of times the congestion group (where all
28 * the request and response queueus are) reached congestion. Incremented
29 * each time the congestion callback is called with congested == true.
30 */
31static u64 times_congested;
32
33void caam_debugfs_qi_congested(void)
34{
35	times_congested++;
36}
37
38void caam_debugfs_qi_init(struct caam_drv_private *ctrlpriv)
39{
40	debugfs_create_file("qi_congested", 0444, ctrlpriv->ctl,
41			    &times_congested, &caam_fops_u64_ro);
42}
43#endif
44
45void caam_debugfs_init(struct caam_drv_private *ctrlpriv, struct dentry *root)
46{
47	struct caam_perfmon *perfmon;
48
49	/*
50	 * FIXME: needs better naming distinction, as some amalgamation of
51	 * "caam" and nprop->full_name. The OF name isn't distinctive,
52	 * but does separate instances
53	 */
54	perfmon = (struct caam_perfmon __force *)&ctrlpriv->ctrl->perfmon;
55
56	ctrlpriv->ctl = debugfs_create_dir("ctl", root);
57
58	debugfs_create_file("rq_dequeued", 0444, ctrlpriv->ctl,
59			    &perfmon->req_dequeued, &caam_fops_u64_ro);
60	debugfs_create_file("ob_rq_encrypted", 0444, ctrlpriv->ctl,
61			    &perfmon->ob_enc_req, &caam_fops_u64_ro);
62	debugfs_create_file("ib_rq_decrypted", 0444, ctrlpriv->ctl,
63			    &perfmon->ib_dec_req, &caam_fops_u64_ro);
64	debugfs_create_file("ob_bytes_encrypted", 0444, ctrlpriv->ctl,
65			    &perfmon->ob_enc_bytes, &caam_fops_u64_ro);
66	debugfs_create_file("ob_bytes_protected", 0444, ctrlpriv->ctl,
67			    &perfmon->ob_prot_bytes, &caam_fops_u64_ro);
68	debugfs_create_file("ib_bytes_decrypted", 0444, ctrlpriv->ctl,
69			    &perfmon->ib_dec_bytes, &caam_fops_u64_ro);
70	debugfs_create_file("ib_bytes_validated", 0444, ctrlpriv->ctl,
71			    &perfmon->ib_valid_bytes, &caam_fops_u64_ro);
72
73	/* Controller level - global status values */
74	debugfs_create_file("fault_addr", 0444, ctrlpriv->ctl,
75			    &perfmon->faultaddr, &caam_fops_u32_ro);
76	debugfs_create_file("fault_detail", 0444, ctrlpriv->ctl,
77			    &perfmon->faultdetail, &caam_fops_u32_ro);
78	debugfs_create_file("fault_status", 0444, ctrlpriv->ctl,
79			    &perfmon->status, &caam_fops_u32_ro);
80
81	/* Internal covering keys (useful in non-secure mode only) */
82	ctrlpriv->ctl_kek_wrap.data = (__force void *)&ctrlpriv->ctrl->kek[0];
83	ctrlpriv->ctl_kek_wrap.size = KEK_KEY_SIZE * sizeof(u32);
84	debugfs_create_blob("kek", 0444, ctrlpriv->ctl,
85			    &ctrlpriv->ctl_kek_wrap);
86
87	ctrlpriv->ctl_tkek_wrap.data = (__force void *)&ctrlpriv->ctrl->tkek[0];
88	ctrlpriv->ctl_tkek_wrap.size = KEK_KEY_SIZE * sizeof(u32);
89	debugfs_create_blob("tkek", 0444, ctrlpriv->ctl,
90			    &ctrlpriv->ctl_tkek_wrap);
91
92	ctrlpriv->ctl_tdsk_wrap.data = (__force void *)&ctrlpriv->ctrl->tdsk[0];
93	ctrlpriv->ctl_tdsk_wrap.size = KEK_KEY_SIZE * sizeof(u32);
94	debugfs_create_blob("tdsk", 0444, ctrlpriv->ctl,
95			    &ctrlpriv->ctl_tdsk_wrap);
96}