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/*
* 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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