LXR linux/drivers/s390/cio/qdio

   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
  16extern debug_info_t *qdio_dbf_setup;
  17extern debug_info_t *qdio_dbf_error;
  18
  19/* sort out low debug levels early to avoid wasted sprints */
  20static 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
  40static 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
  56static 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
  74static 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
  84void qdio_allocate_dbf(struct qdio_initialize *init_data,
  85                       struct qdio_irq *irq_ptr);
  86void qdio_setup_debug_entries(struct qdio_irq *irq_ptr,
  87                              struct ccw_device *cdev);
  88void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr);
  89int qdio_debug_init(void);
  90void qdio_debug_exit(void);
  91
  92#endif
  93