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 34 static 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