LXR linux/tools/include/linux/coresight-pmu.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 _LINUX_CORESIGHT_PMU_H
  19#define _LINUX_CORESIGHT_PMU_H
  20
  21#define CORESIGHT_ETM_PMU_NAME "cs_etm"
  22#define CORESIGHT_ETM_PMU_SEED  0x10
  23
  24/* ETMv3.5/PTM's ETMCR config bit */
  25#define ETM_OPT_CYCACC  12
  26#define ETM_OPT_TS      28
  27#define ETM_OPT_RETSTK  29
  28
  29/* ETMv4 CONFIGR programming bits for the ETM OPTs */
  30#define ETM4_CFG_BIT_CYCACC     4
  31#define ETM4_CFG_BIT_TS         11
  32#define ETM4_CFG_BIT_RETSTK     12
  33
  34static inline int coresight_get_trace_id(int cpu)
  35{
  36        /*
  37         * A trace ID of value 0 is invalid, so let's start at some
  38         * random value that fits in 7 bits and go from there.  Since
  39         * the common convention is to have data trace IDs be I(N) + 1,
  40         * set instruction trace IDs as a function of the CPU number.
  41         */
  42        return (CORESIGHT_ETM_PMU_SEED + (cpu * 2));
  43}
  44
  45#endif
  46