drivers/s390/cio/qdio_debug.h

   1 /*
   2  *  drivers/s390/cio/qdio_debug.h
   3  *
   4  *  Copyright IBM Corp. 2008
   5  *
   6  *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
   7  */
   8 #ifndef QDIO_DEBUG_H
   9 #define QDIO_DEBUG_H
  10
  11 #include <asm/debug.h>
  12 #include <asm/qdio.h>
  13 #include "qdio.h"
  14
  15 /* that gives us 15 characters in the text event views */
  16 #define QDIO_DBF_LEN    16
  17
  18 extern debug_info_t *qdio_dbf_setup;
  19 extern debug_info_t *qdio_dbf_error;
  20
  21 /* sort out low debug levels early to avoid wasted sprints */
  22 static inline int qdio_dbf_passes(debug_info_t *dbf_grp, int level)
  23 {
  24         return (level <= dbf_grp->level);
  25 }
  26
  27 #define DBF_ERR         3       /* error conditions     */
  28 #define DBF_WARN        4       /* warning conditions   */
  29 #define DBF_INFO        6       /* informational        */
  30
  31 #undef DBF_EVENT
  32 #undef DBF_ERROR
  33 #undef DBF_DEV_EVENT
  34
  35 #define DBF_EVENT(text...) \
  36         do { \
  37                 char debug_buffer[QDIO_DBF_LEN]; \
  38                 snprintf(debug_buffer, QDIO_DBF_LEN, text); \
  39                 debug_text_event(qdio_dbf_setup, DBF_ERR, debug_buffer); \
  40         } while (0)
  41
  42 #define DBF_HEX(addr, len) \
  43         do { \
  44                 debug_event(qdio_dbf_setup, DBF_ERR, (void*)(addr), len); \
  45         } while (0)
  46
  47 #define DBF_ERROR(text...) \
  48         do { \
  49                 char debug_buffer[QDIO_DBF_LEN]; \
  50                 snprintf(debug_buffer, QDIO_DBF_LEN, text); \
  51                 debug_text_event(qdio_dbf_error, DBF_ERR, debug_buffer); \
  52         } while (0)
  53
  54 #define DBF_ERROR_HEX(addr, len) \
  55         do { \
  56                 debug_event(qdio_dbf_error, DBF_ERR, (void*)(addr), len); \
  57         } while (0)
  58
  59
  60 #define DBF_DEV_EVENT(level, device, text...) \
  61         do { \
  62                 char debug_buffer[QDIO_DBF_LEN]; \
  63                 if (qdio_dbf_passes(device->debug_area, level)) { \
  64                         snprintf(debug_buffer, QDIO_DBF_LEN, text); \
  65                         debug_text_event(device->debug_area, level, debug_buffer); \
  66                 } \
  67         } while (0)
  68
  69 #define DBF_DEV_HEX(level, device, addr, len) \
  70         do { \
  71                 debug_event(device->debug_area, level, (void*)(addr), len); \
  72         } while (0)
  73
  74 void qdio_allocate_dbf(struct qdio_initialize *init_data,
  75                        struct qdio_irq *irq_ptr);
  76 void qdio_setup_debug_entries(struct qdio_irq *irq_ptr,
  77                               struct ccw_device *cdev);
  78 void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr,
  79                                  struct ccw_device *cdev);
  80 int qdio_debug_init(void);
  81 void qdio_debug_exit(void);
  82
  83 #endif