1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2/* Copyright 2019, 2023 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,
46		       struct caam_perfmon __force *perfmon,
47		       struct dentry *root)
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
55	ctrlpriv->ctl = debugfs_create_dir("ctl", root);
56
57	debugfs_create_file("rq_dequeued", 0444, ctrlpriv->ctl,
58			    &perfmon->req_dequeued, &caam_fops_u64_ro);
59	debugfs_create_file("ob_rq_encrypted", 0444, ctrlpriv->ctl,
60			    &perfmon->ob_enc_req, &caam_fops_u64_ro);
61	debugfs_create_file("ib_rq_decrypted", 0444, ctrlpriv->ctl,
62			    &perfmon->ib_dec_req, &caam_fops_u64_ro);
63	debugfs_create_file("ob_bytes_encrypted", 0444, ctrlpriv->ctl,
64			    &perfmon->ob_enc_bytes, &caam_fops_u64_ro);
65	debugfs_create_file("ob_bytes_protected", 0444, ctrlpriv->ctl,
66			    &perfmon->ob_prot_bytes, &caam_fops_u64_ro);
67	debugfs_create_file("ib_bytes_decrypted", 0444, ctrlpriv->ctl,
68			    &perfmon->ib_dec_bytes, &caam_fops_u64_ro);
69	debugfs_create_file("ib_bytes_validated", 0444, ctrlpriv->ctl,
70			    &perfmon->ib_valid_bytes, &caam_fops_u64_ro);
71
72	/* Controller level - global status values */
73	debugfs_create_file("fault_addr", 0444, ctrlpriv->ctl,
74			    &perfmon->faultaddr, &caam_fops_u32_ro);
75	debugfs_create_file("fault_detail", 0444, ctrlpriv->ctl,
76			    &perfmon->faultdetail, &caam_fops_u32_ro);
77	debugfs_create_file("fault_status", 0444, ctrlpriv->ctl,
78			    &perfmon->status, &caam_fops_u32_ro);
79
80	if (ctrlpriv->optee_en)
81		return;
82
83	/* Internal covering keys (useful in non-secure mode only) */
84	ctrlpriv->ctl_kek_wrap.data = (__force void *)&ctrlpriv->ctrl->kek[0];
85	ctrlpriv->ctl_kek_wrap.size = KEK_KEY_SIZE * sizeof(u32);
86	debugfs_create_blob("kek", 0444, ctrlpriv->ctl,
87			    &ctrlpriv->ctl_kek_wrap);
88
89	ctrlpriv->ctl_tkek_wrap.data = (__force void *)&ctrlpriv->ctrl->tkek[0];
90	ctrlpriv->ctl_tkek_wrap.size = KEK_KEY_SIZE * sizeof(u32);
91	debugfs_create_blob("tkek", 0444, ctrlpriv->ctl,
92			    &ctrlpriv->ctl_tkek_wrap);
93
94	ctrlpriv->ctl_tdsk_wrap.data = (__force void *)&ctrlpriv->ctrl->tdsk[0];
95	ctrlpriv->ctl_tdsk_wrap.size = KEK_KEY_SIZE * sizeof(u32);
96	debugfs_create_blob("tdsk", 0444, ctrlpriv->ctl,
97			    &ctrlpriv->ctl_tdsk_wrap);
98}
99