release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/scsi/bfa/include/cs/bfa_trc.h

   1 /*
   2  * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17 #ifndef __BFA_TRC_H__
  18 #define __BFA_TRC_H__
  19
  20 #include <bfa_os_inc.h>
  21
  22 #ifndef BFA_TRC_MAX
  23 #define BFA_TRC_MAX     (4 * 1024)
  24 #endif
  25
  26 #ifndef BFA_TRC_TS
  27 #define BFA_TRC_TS(_trcm)       ((_trcm)->ticks++)
  28 #endif
  29
  30 struct bfa_trc_s {
  31 #ifdef __BIGENDIAN
  32         u16     fileno;
  33         u16     line;
  34 #else
  35         u16     line;
  36         u16     fileno;
  37 #endif
  38         u32     timestamp;
  39         union {
  40                 struct {
  41                         u32     rsvd;
  42                         u32     u32;
  43                 } u32;
  44                 u64     u64;
  45         } data;
  46 };
  47
  48
  49 struct bfa_trc_mod_s {
  50         u32     head;
  51         u32     tail;
  52         u32     ntrc;
  53         u32     stopped;
  54         u32     ticks;
  55         u32     rsvd[3];
  56         struct bfa_trc_s trc[BFA_TRC_MAX];
  57 };
  58
  59
  60 enum {
  61         BFA_TRC_FW   = 1,       /*  firmware modules */
  62         BFA_TRC_HAL  = 2,       /*  BFA modules */
  63         BFA_TRC_FCS  = 3,       /*  BFA FCS modules */
  64         BFA_TRC_LDRV = 4,       /*  Linux driver modules */
  65         BFA_TRC_SDRV = 5,       /*  Solaris driver modules */
  66         BFA_TRC_VDRV = 6,       /*  vmware driver modules */
  67         BFA_TRC_WDRV = 7,       /*  windows driver modules */
  68         BFA_TRC_AEN  = 8,       /*  AEN module */
  69         BFA_TRC_BIOS = 9,       /*  bios driver modules */
  70         BFA_TRC_EFI  = 10,      /*  EFI driver modules */
  71         BNA_TRC_WDRV = 11,      /*  BNA windows driver modules */
  72         BNA_TRC_VDRV = 12,      /*  BNA vmware driver modules */
  73         BNA_TRC_SDRV = 13,      /*  BNA Solaris driver modules */
  74         BNA_TRC_LDRV = 14,      /*  BNA Linux driver modules */
  75         BNA_TRC_HAL  = 15,      /*  BNA modules */
  76         BFA_TRC_CNA  = 16,      /*  Common modules */
  77         BNA_TRC_IMDRV = 17      /*  BNA windows intermediate driver modules */
  78 };
  79 #define BFA_TRC_MOD_SH  10
  80 #define BFA_TRC_MOD(__mod)      ((BFA_TRC_ ## __mod) << BFA_TRC_MOD_SH)
  81
  82 /**
  83  * Define a new tracing file (module). Module should match one defined above.
  84  */
  85 #define BFA_TRC_FILE(__mod, __submod)                                   \
  86         static int __trc_fileno = ((BFA_TRC_ ## __mod ## _ ## __submod) | \
  87                                                  BFA_TRC_MOD(__mod))
  88
  89
  90 #define bfa_trc32(_trcp, _data) \
  91         __bfa_trc((_trcp)->trcmod, __trc_fileno, __LINE__, (u32)_data)
  92
  93
  94 #ifndef BFA_BOOT_BUILD
  95 #define bfa_trc(_trcp, _data)   \
  96         __bfa_trc((_trcp)->trcmod, __trc_fileno, __LINE__, (u64)_data)
  97 #else
  98 void bfa_boot_trc(struct bfa_trc_mod_s *trcmod, u16 fileno,
  99                         u16 line, u32 data);
 100 #define bfa_trc(_trcp, _data)   \
 101         bfa_boot_trc((_trcp)->trcmod, __trc_fileno, __LINE__, (u32)_data)
 102 #endif
 103
 104
 105 static inline void
 106 bfa_trc_init(struct bfa_trc_mod_s *trcm)
 107 {
 108         trcm->head = trcm->tail = trcm->stopped = 0;
 109         trcm->ntrc = BFA_TRC_MAX;
 110 }
 111
 112
 113 static inline void
 114 bfa_trc_stop(struct bfa_trc_mod_s *trcm)
 115 {
 116         trcm->stopped = 1;
 117 }
 118
 119 #ifdef FWTRC
 120 extern void dc_flush(void *data);
 121 #else
 122 #define dc_flush(data)
 123 #endif
 124
 125
 126 static inline void
 127 __bfa_trc(struct bfa_trc_mod_s *trcm, int fileno, int line, u64 data)
 128 {
 129         int             tail = trcm->tail;
 130         struct bfa_trc_s        *trc = &trcm->trc[tail];
 131
 132         if (trcm->stopped)
 133                 return;
 134
 135         trc->fileno = (u16) fileno;
 136         trc->line = (u16) line;
 137         trc->data.u64 = data;
 138         trc->timestamp = BFA_TRC_TS(trcm);
 139         dc_flush(trc);
 140
 141         trcm->tail = (trcm->tail + 1) & (BFA_TRC_MAX - 1);
 142         if (trcm->tail == trcm->head)
 143                 trcm->head = (trcm->head + 1) & (BFA_TRC_MAX - 1);
 144         dc_flush(trcm);
 145 }
 146
 147
 148 static inline void
 149 __bfa_trc32(struct bfa_trc_mod_s *trcm, int fileno, int line, u32 data)
 150 {
 151         int             tail = trcm->tail;
 152         struct bfa_trc_s *trc = &trcm->trc[tail];
 153
 154         if (trcm->stopped)
 155                 return;
 156
 157         trc->fileno = (u16) fileno;
 158         trc->line = (u16) line;
 159         trc->data.u32.u32 = data;
 160         trc->timestamp = BFA_TRC_TS(trcm);
 161         dc_flush(trc);
 162
 163         trcm->tail = (trcm->tail + 1) & (BFA_TRC_MAX - 1);
 164         if (trcm->tail == trcm->head)
 165                 trcm->head = (trcm->head + 1) & (BFA_TRC_MAX - 1);
 166         dc_flush(trcm);
 167 }
 168
 169 #ifndef BFA_PERF_BUILD
 170 #define bfa_trc_fp(_trcp, _data)        bfa_trc(_trcp, _data)
 171 #else
 172 #define bfa_trc_fp(_trcp, _data)
 173 #endif
 174
 175 #endif /* __BFA_TRC_H__ */