drivers/hwtracing/coresight/coresight-etm-perf.h

   1 /*
   2  * Copyright(C) 2015 Linaro Limited. All rights reserved.
   3  * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef _CORESIGHT_ETM_PERF_H
  19 #define _CORESIGHT_ETM_PERF_H
  20
  21 #include "coresight-priv.h"
  22
  23 struct coresight_device;
  24
  25 /*
  26  * In both ETMv3 and v4 the maximum number of address comparator implentable
  27  * is 8.  The actual number is implementation specific and will be checked
  28  * when filters are applied.
  29  */
  30 #define ETM_ADDR_CMP_MAX        8
  31
  32 /**
  33  * struct etm_filter - single instruction range or start/stop configuration.
  34  * @start_addr: The address to start tracing on.
  35  * @stop_addr:  The address to stop tracing on.
  36  * @type:       Is this a range or start/stop filter.
  37  */
  38 struct etm_filter {
  39         unsigned long start_addr;
  40         unsigned long stop_addr;
  41         enum etm_addr_type type;
  42 };
  43
  44 /**
  45  * struct etm_filters - set of filters for a session
  46  * @etm_filter: All the filters for this session.
  47  * @nr_filters: Number of filters
  48  * @ssstatus:   Status of the start/stop logic.
  49  */
  50 struct etm_filters {
  51         struct etm_filter       etm_filter[ETM_ADDR_CMP_MAX];
  52         unsigned int            nr_filters;
  53         bool                    ssstatus;
  54 };
  55
  56
  57 #ifdef CONFIG_CORESIGHT
  58 int etm_perf_symlink(struct coresight_device *csdev, bool link);
  59
  60 #else
  61 static inline int etm_perf_symlink(struct coresight_device *csdev, bool link)
  62 { return -EINVAL; }
  63
  64 #endif /* CONFIG_CORESIGHT */
  65
  66 #endif