xref: /openbmc/linux/drivers/s390/net/ctcm_dbug.c (revision 22246614)
1 /*
2  *	drivers/s390/net/ctcm_dbug.c
3  *
4  *	Copyright IBM Corp. 2001, 2007
5  *	Authors:	Peter Tiedemann (ptiedem@de.ibm.com)
6  *
7  */
8 
9 #include <linux/stddef.h>
10 #include <linux/kernel.h>
11 #include <linux/errno.h>
12 #include <linux/slab.h>
13 #include <linux/ctype.h>
14 #include <linux/sysctl.h>
15 #include <linux/module.h>
16 #include <linux/init.h>
17 #include <linux/fs.h>
18 #include <linux/debugfs.h>
19 #include "ctcm_dbug.h"
20 
21 /*
22  * Debug Facility Stuff
23  */
24 
25 DEFINE_PER_CPU(char[256], ctcm_dbf_txt_buf);
26 
27 struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS] = {
28 	[CTCM_DBF_SETUP]	= {"ctc_setup", 8, 1, 64, 5, NULL},
29 	[CTCM_DBF_ERROR]	= {"ctc_error", 8, 1, 64, 3, NULL},
30 	[CTCM_DBF_TRACE]	= {"ctc_trace", 8, 1, 64, 3, NULL},
31 	[CTCM_DBF_MPC_SETUP]	= {"mpc_setup", 8, 1, 64, 5, NULL},
32 	[CTCM_DBF_MPC_ERROR]	= {"mpc_error", 8, 1, 64, 3, NULL},
33 	[CTCM_DBF_MPC_TRACE]	= {"mpc_trace", 8, 1, 64, 3, NULL},
34 };
35 
36 void ctcm_unregister_dbf_views(void)
37 {
38 	int x;
39 	for (x = 0; x < CTCM_DBF_INFOS; x++) {
40 		debug_unregister(ctcm_dbf[x].id);
41 		ctcm_dbf[x].id = NULL;
42 	}
43 }
44 
45 int ctcm_register_dbf_views(void)
46 {
47 	int x;
48 	for (x = 0; x < CTCM_DBF_INFOS; x++) {
49 		/* register the areas */
50 		ctcm_dbf[x].id = debug_register(ctcm_dbf[x].name,
51 						ctcm_dbf[x].pages,
52 						ctcm_dbf[x].areas,
53 						ctcm_dbf[x].len);
54 		if (ctcm_dbf[x].id == NULL) {
55 			ctcm_unregister_dbf_views();
56 			return -ENOMEM;
57 		}
58 
59 		/* register a view */
60 		debug_register_view(ctcm_dbf[x].id, &debug_hex_ascii_view);
61 		/* set a passing level */
62 		debug_set_level(ctcm_dbf[x].id, ctcm_dbf[x].level);
63 	}
64 
65 	return 0;
66 }
67 
68