1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2020 Intel Corporation
3
4 #include <linux/debugfs.h>
5
6 #include "ufs-debugfs.h"
7 #include "ufshcd.h"
8
9 static struct dentry *ufs_debugfs_root;
10
ufs_debugfs_init(void)11 void __init ufs_debugfs_init(void)
12 {
13 ufs_debugfs_root = debugfs_create_dir("ufshcd", NULL);
14 }
15
ufs_debugfs_exit(void)16 void __exit ufs_debugfs_exit(void)
17 {
18 debugfs_remove_recursive(ufs_debugfs_root);
19 }
20
ufs_debugfs_stats_show(struct seq_file * s,void * data)21 static int ufs_debugfs_stats_show(struct seq_file *s, void *data)
22 {
23 struct ufs_hba *hba = s->private;
24 struct ufs_event_hist *e = hba->ufs_stats.event;
25
26 #define PRT(fmt, typ) \
27 seq_printf(s, fmt, e[UFS_EVT_ ## typ].cnt)
28
29 PRT("PHY Adapter Layer errors (except LINERESET): %llu\n", PA_ERR);
30 PRT("Data Link Layer errors: %llu\n", DL_ERR);
31 PRT("Network Layer errors: %llu\n", NL_ERR);
32 PRT("Transport Layer errors: %llu\n", TL_ERR);
33 PRT("Generic DME errors: %llu\n", DME_ERR);
34 PRT("Auto-hibernate errors: %llu\n", AUTO_HIBERN8_ERR);
35 PRT("IS Fatal errors (CEFES, SBFES, HCFES, DFES): %llu\n", FATAL_ERR);
36 PRT("DME Link Startup errors: %llu\n", LINK_STARTUP_FAIL);
37 PRT("PM Resume errors: %llu\n", RESUME_ERR);
38 PRT("PM Suspend errors : %llu\n", SUSPEND_ERR);
39 PRT("Logical Unit Resets: %llu\n", DEV_RESET);
40 PRT("Host Resets: %llu\n", HOST_RESET);
41 PRT("SCSI command aborts: %llu\n", ABORT);
42 #undef PRT
43 return 0;
44 }
45 DEFINE_SHOW_ATTRIBUTE(ufs_debugfs_stats);
46
ufs_debugfs_hba_init(struct ufs_hba * hba)47 void ufs_debugfs_hba_init(struct ufs_hba *hba)
48 {
49 hba->debugfs_root = debugfs_create_dir(dev_name(hba->dev), ufs_debugfs_root);
50 debugfs_create_file("stats", 0400, hba->debugfs_root, hba, &ufs_debugfs_stats_fops);
51 }
52
ufs_debugfs_hba_exit(struct ufs_hba * hba)53 void ufs_debugfs_hba_exit(struct ufs_hba *hba)
54 {
55 debugfs_remove_recursive(hba->debugfs_root);
56 }
57