drivers/s390/net/ctcm_dbug.h

   1 /*
   2  *      drivers/s390/net/ctcm_dbug.h
   3  *
   4  *      Copyright IBM Corp. 2001, 2007
   5  *      Authors:        Peter Tiedemann (ptiedem@de.ibm.com)
   6  *
   7  */
   8
   9 #ifndef _CTCM_DBUG_H_
  10 #define _CTCM_DBUG_H_
  11
  12 /*
  13  * Debug Facility stuff
  14  */
  15
  16 #include <asm/debug.h>
  17
  18 #ifdef DEBUG
  19  #define do_debug 1
  20 #else
  21  #define do_debug 0
  22 #endif
  23 #ifdef DEBUGDATA
  24  #define do_debug_data 1
  25 #else
  26  #define do_debug_data 0
  27 #endif
  28 #ifdef DEBUGCCW
  29  #define do_debug_ccw 1
  30 #else
  31  #define do_debug_ccw 0
  32 #endif
  33
  34 /* define dbf debug levels similar to kernel msg levels */
  35 #define CTC_DBF_ALWAYS  0       /* always print this                    */
  36 #define CTC_DBF_EMERG   0       /* system is unusable                   */
  37 #define CTC_DBF_ALERT   1       /* action must be taken immediately     */
  38 #define CTC_DBF_CRIT    2       /* critical conditions                  */
  39 #define CTC_DBF_ERROR   3       /* error conditions                     */
  40 #define CTC_DBF_WARN    4       /* warning conditions                   */
  41 #define CTC_DBF_NOTICE  5       /* normal but significant condition     */
  42 #define CTC_DBF_INFO    5       /* informational                        */
  43 #define CTC_DBF_DEBUG   6       /* debug-level messages                 */
  44
  45 DECLARE_PER_CPU(char[256], ctcm_dbf_txt_buf);
  46
  47 enum ctcm_dbf_names {
  48         CTCM_DBF_SETUP,
  49         CTCM_DBF_ERROR,
  50         CTCM_DBF_TRACE,
  51         CTCM_DBF_MPC_SETUP,
  52         CTCM_DBF_MPC_ERROR,
  53         CTCM_DBF_MPC_TRACE,
  54         CTCM_DBF_INFOS  /* must be last element */
  55 };
  56
  57 struct ctcm_dbf_info {
  58         char name[DEBUG_MAX_NAME_LEN];
  59         int pages;
  60         int areas;
  61         int len;
  62         int level;
  63         debug_info_t *id;
  64 };
  65
  66 extern struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS];
  67
  68 int ctcm_register_dbf_views(void);
  69 void ctcm_unregister_dbf_views(void);
  70
  71 static inline const char *strtail(const char *s, int n)
  72 {
  73         int l = strlen(s);
  74         return (l > n) ? s + (l - n) : s;
  75 }
  76
  77 /* sort out levels early to avoid unnecessary sprintfs */
  78 static inline int ctcm_dbf_passes(debug_info_t *dbf_grp, int level)
  79 {
  80         return (dbf_grp->level >= level);
  81 }
  82
  83 #define CTCM_FUNTAIL strtail((char *)__func__, 16)
  84
  85 #define CTCM_DBF_TEXT(name, level, text) \
  86         do { \
  87                 debug_text_event(ctcm_dbf[CTCM_DBF_##name].id, level, text); \
  88         } while (0)
  89
  90 #define CTCM_DBF_HEX(name, level, addr, len) \
  91         do { \
  92                 debug_event(ctcm_dbf[CTCM_DBF_##name].id, \
  93                                         level, (void *)(addr), len); \
  94         } while (0)
  95
  96 #define CTCM_DBF_TEXT_(name, level, text...) \
  97         do { \
  98                 if (ctcm_dbf_passes(ctcm_dbf[CTCM_DBF_##name].id, level)) { \
  99                         char *ctcm_dbf_txt_buf = \
 100                                          get_cpu_var(ctcm_dbf_txt_buf); \
 101                         sprintf(ctcm_dbf_txt_buf, text); \
 102                         debug_text_event(ctcm_dbf[CTCM_DBF_##name].id, \
 103                                         level, ctcm_dbf_txt_buf); \
 104                         put_cpu_var(ctcm_dbf_txt_buf); \
 105                 } \
 106         } while (0)
 107
 108 /*
 109  * cat : one of {setup, mpc_setup, trace, mpc_trace, error, mpc_error}.
 110  * dev : netdevice with valid name field.
 111  * text: any text string.
 112  */
 113 #define CTCM_DBF_DEV_NAME(cat, dev, text) \
 114         do { \
 115                 CTCM_DBF_TEXT_(cat, CTC_DBF_INFO, "%s(%s) : %s", \
 116                         CTCM_FUNTAIL, dev->name, text); \
 117         } while (0)
 118
 119 #define MPC_DBF_DEV_NAME(cat, dev, text) \
 120         do { \
 121                 CTCM_DBF_TEXT_(MPC_##cat, CTC_DBF_INFO, "%s(%s) : %s", \
 122                         CTCM_FUNTAIL, dev->name, text); \
 123         } while (0)
 124
 125 #define CTCMY_DBF_DEV_NAME(cat, dev, text) \
 126         do { \
 127                 if (IS_MPCDEV(dev)) \
 128                         MPC_DBF_DEV_NAME(cat, dev, text); \
 129                 else \
 130                         CTCM_DBF_DEV_NAME(cat, dev, text); \
 131         } while (0)
 132
 133 /*
 134  * cat : one of {setup, mpc_setup, trace, mpc_trace, error, mpc_error}.
 135  * dev : netdevice.
 136  * text: any text string.
 137  */
 138 #define CTCM_DBF_DEV(cat, dev, text) \
 139         do { \
 140                 CTCM_DBF_TEXT_(cat, CTC_DBF_INFO, "%s(%p) : %s", \
 141                         CTCM_FUNTAIL, dev, text); \
 142         } while (0)
 143
 144 #define MPC_DBF_DEV(cat, dev, text) \
 145         do { \
 146                 CTCM_DBF_TEXT_(MPC_##cat, CTC_DBF_INFO, "%s(%p) : %s", \
 147                         CTCM_FUNTAIL, dev, text); \
 148         } while (0)
 149
 150 #define CTCMY_DBF_DEV(cat, dev, text) \
 151         do { \
 152                 if (IS_MPCDEV(dev)) \
 153                         MPC_DBF_DEV(cat, dev, text); \
 154                 else \
 155                         CTCM_DBF_DEV(cat, dev, text); \
 156         } while (0)
 157
 158 #endif