drivers/s390/cio/qdio_debug.h

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