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