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
caam_debugfs_u64_get(void * data,u64 * val)10 static int caam_debugfs_u64_get(void *data, u64 *val)
11 {
12 *val = caam64_to_cpu(*(u64 *)data);
13 return 0;
14 }
15
caam_debugfs_u32_get(void * data,u64 * val)16 static int caam_debugfs_u32_get(void *data, u64 *val)
17 {
18 *val = caam32_to_cpu(*(u32 *)data);
19 return 0;
20 }
21
22 DEFINE_DEBUGFS_ATTRIBUTE(caam_fops_u32_ro, caam_debugfs_u32_get, NULL, "%llu\n");
23 DEFINE_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 */
31 static u64 times_congested;
32
caam_debugfs_qi_congested(void)33 void caam_debugfs_qi_congested(void)
34 {
35 times_congested++;
36 }
37
caam_debugfs_qi_init(struct caam_drv_private * ctrlpriv)38 void caam_debugfs_qi_init(struct caam_drv_private *ctrlpriv)
39 {
40 debugfs_create_file("qi_congested", 0444, ctrlpriv->ctl,
41 ×_congested, &caam_fops_u64_ro);
42 }
43 #endif
44
caam_debugfs_init(struct caam_drv_private * ctrlpriv,struct dentry * root)45 void 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 }
97