/*
* linux / drivers / scsi / esas2r / esas2r_log . h
* For use with ATTO ExpressSAS R6xx SAS / SATA RAID controllers
*
* Copyright ( c ) 2001 - 2013 ATTO Technology , Inc .
* ( mailto : linuxdrivers @ attotech . com )
*
* This program is free software ; you can redistribute it and / or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation ; either version 2
* of the License , or ( at your option ) any later version .
*
* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
*
* NO WARRANTY
* THE PROGRAM IS PROVIDED ON AN " AS IS " BASIS , WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND , EITHER EXPRESS OR IMPLIED INCLUDING , WITHOUT
* LIMITATION , ANY WARRANTIES OR CONDITIONS OF TITLE , NON - INFRINGEMENT ,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE . Each Recipient is
* solely responsible for determining the appropriateness of using and
* distributing the Program and assumes all risks associated with its
* exercise of rights under this Agreement , including but not limited to
* the risks and costs of program errors , damage to or loss of data ,
* programs or equipment , and unavailability or interruption of operations .
*
* DISCLAIMER OF LIABILITY
* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
* DIRECT , INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL
* DAMAGES ( INCLUDING WITHOUT LIMITATION LOST PROFITS ) , HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY , OR
* TORT ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT OF THE
* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
* HEREUNDER , EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
*
* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin Street , Fifth Floor , Boston , MA 02110 - 1301 ,
* USA .
*/
#ifndef __esas2r_log_h__
#define __esas2r_log_h__
struct device;
enum {
ESAS2R_LOG_NONE = 0 , /* no events logged */
ESAS2R_LOG_CRIT = 1 , /* critical events */
ESAS2R_LOG_WARN = 2 , /* warning events */
ESAS2R_LOG_INFO = 3 , /* info events */
ESAS2R_LOG_DEBG = 4 , /* debugging events */
ESAS2R_LOG_TRCE = 5 , /* tracing events */
#ifdef ESAS2R_TRACE
ESAS2R_LOG_DFLT = ESAS2R_LOG_TRCE
#else
ESAS2R_LOG_DFLT = ESAS2R_LOG_WARN
#endif
};
__printf(2 , 3 ) int esas2r_log(const long level, const char *format, ...);
__printf(3 , 4 ) int esas2r_log_dev(const long level,
const struct device *dev,
const char *format,
...);
int esas2r_log_hexdump(const long level,
const void *buf,
size_t len);
/*
* the following macros are provided specifically for debugging and tracing
* messages . esas2r_debug ( ) is provided for generic non - hardware layer
* debugging and tracing events . esas2r_hdebug is provided specifically for
* hardware layer debugging and tracing events .
*/
#ifdef ESAS2R_DEBUG
#define esas2r_debug(f, args ...) esas2r_log(ESAS2R_LOG_DEBG, f, ## args)
#define esas2r_hdebug(f, args ...) esas2r_log(ESAS2R_LOG_DEBG, f, ## args)
#else
#define esas2r_debug(f, args ...)
#define esas2r_hdebug(f, args ...)
#endif /* ESAS2R_DEBUG */
/*
* the following macros are provided in order to trace the driver and catch
* some more serious bugs . be warned , enabling these macros may * severely *
* impact performance .
*/
#ifdef ESAS2R_TRACE
#define esas2r_bugon() \
do { \
esas2r_log(ESAS2R_LOG_TRCE, "esas2r_bugon() called in %s:%d" \
" - dumping stack and stopping kernel" , __func__, \
__LINE__); \
dump_stack(); \
BUG(); \
} while (0 )
#define esas2r_trace_enter() esas2r_log(ESAS2R_LOG_TRCE, "entered %s (%s:%d)" , \
__func__, __FILE__, __LINE__)
#define esas2r_trace_exit() esas2r_log(ESAS2R_LOG_TRCE, "exited %s (%s:%d)" , \
__func__, __FILE__, __LINE__)
#define esas2r_trace(f, args ...) esas2r_log(ESAS2R_LOG_TRCE, "(%s:%s:%d): " \
f, __func__, __FILE__, __LINE__, \
## args)
#else
#define esas2r_bugon()
#define esas2r_trace_enter()
#define esas2r_trace_exit()
#define esas2r_trace(f, args ...)
#endif /* ESAS2R_TRACE */
#endif /* __esas2r_log_h__ */
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