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 static inline void DBF_HEX(void *addr, int len)
  41 {
  42         while (len > 0) {
  43                 debug_event(qdio_dbf_setup, DBF_ERR, addr, len);
  44                 len -= qdio_dbf_setup->buf_size;
  45                 addr += qdio_dbf_setup->buf_size;
  46         }
  47 }
  48
  49 #define DBF_ERROR(text...) \
  50         do { \
  51                 char debug_buffer[QDIO_DBF_LEN]; \
  52                 snprintf(debug_buffer, QDIO_DBF_LEN, text); \
  53                 debug_text_event(qdio_dbf_error, DBF_ERR, debug_buffer); \
  54         } while (0)
  55
  56 static inline void DBF_ERROR_HEX(void *addr, int len)
  57 {
  58         while (len > 0) {
  59                 debug_event(qdio_dbf_error, DBF_ERR, addr, len);
  60                 len -= qdio_dbf_error->buf_size;
  61                 addr += qdio_dbf_error->buf_size;
  62         }
  63 }
  64
  65 #define DBF_DEV_EVENT(level, device, text...) \
  66         do { \
  67                 char debug_buffer[QDIO_DBF_LEN]; \
  68                 if (qdio_dbf_passes(device->debug_area, level)) { \
  69                         snprintf(debug_buffer, QDIO_DBF_LEN, text); \
  70                         debug_text_event(device->debug_area, level, debug_buffer); \
  71                 } \
  72         } while (0)
  73
  74 static inline void DBF_DEV_HEX(struct qdio_irq *dev, void *addr,
  75                                int len, int level)
  76 {
  77         while (len > 0) {
  78                 debug_event(dev->debug_area, level, addr, len);
  79                 len -= dev->debug_area->buf_size;
  80                 addr += dev->debug_area->buf_size;
  81         }
  82 }
  83
  84 void qdio_allocate_dbf(struct qdio_initialize *init_data,
  85                        struct qdio_irq *irq_ptr);
  86 void qdio_setup_debug_entries(struct qdio_irq *irq_ptr,
  87                               struct ccw_device *cdev);
  88 void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr);
  89 int qdio_debug_init(void);
  90 void qdio_debug_exit(void);
  91
  92 #endif