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
coresight_get_trace_id(int cpu)28 static inline int coresight_get_trace_id(int cpu)
29 {
30 /*
31 * A trace ID of value 0 is invalid, so let's start at some
32 * random value that fits in 7 bits and go from there. Since
33 * the common convention is to have data trace IDs be I(N) + 1,
34 * set instruction trace IDs as a function of the CPU number.
35 */
36 return (CORESIGHT_ETM_PMU_SEED + (cpu * 2));
37 }
38
39 #endif
40