drivers/hwtracing/coresight/coresight-etm.h - third_party/linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
  */

 #ifndef _CORESIGHT_CORESIGHT_ETM_H
 #define _CORESIGHT_CORESIGHT_ETM_H

 #include <asm/local.h>
 #include <linux/spinlock.h>
 #include "coresight-priv.h"

 /*
  * Device registers:
  * 0x000 - 0x2FC: Trace         registers
  * 0x300 - 0x314: Management    registers
  * 0x318 - 0xEFC: Trace         registers
  *
  * Coresight registers
  * 0xF00 - 0xF9C: Management    registers
  * 0xFA0 - 0xFA4: Management    registers in PFTv1.0
  *                Trace         registers in PFTv1.1
  * 0xFA8 - 0xFFC: Management    registers
  */

 /* Trace registers (0x000-0x2FC) */
 #define ETMCR			0x000
 #define ETMCCR			0x004
 #define ETMTRIGGER		0x008
 #define ETMSR			0x010
 #define ETMSCR			0x014
 #define ETMTSSCR		0x018
 #define ETMTECR2		0x01c
 #define ETMTEEVR		0x020
 #define ETMTECR1		0x024
 #define ETMFFLR			0x02c
 #define ETMACVRn(n)		(0x040 + (n * 4))
 #define ETMACTRn(n)		(0x080 + (n * 4))
 #define ETMCNTRLDVRn(n)		(0x140 + (n * 4))
 #define ETMCNTENRn(n)		(0x150 + (n * 4))
 #define ETMCNTRLDEVRn(n)	(0x160 + (n * 4))
 #define ETMCNTVRn(n)		(0x170 + (n * 4))
 #define ETMSQ12EVR		0x180
 #define ETMSQ21EVR		0x184
 #define ETMSQ23EVR		0x188
 #define ETMSQ31EVR		0x18c
 #define ETMSQ32EVR		0x190
 #define ETMSQ13EVR		0x194
 #define ETMSQR			0x19c
 #define ETMEXTOUTEVRn(n)	(0x1a0 + (n * 4))
 #define ETMCIDCVRn(n)		(0x1b0 + (n * 4))
 #define ETMCIDCMR		0x1bc
 #define ETMIMPSPEC0		0x1c0
 #define ETMIMPSPEC1		0x1c4
 #define ETMIMPSPEC2		0x1c8
 #define ETMIMPSPEC3		0x1cc
 #define ETMIMPSPEC4		0x1d0
 #define ETMIMPSPEC5		0x1d4
 #define ETMIMPSPEC6		0x1d8
 #define ETMIMPSPEC7		0x1dc
 #define ETMSYNCFR		0x1e0
 #define ETMIDR			0x1e4
 #define ETMCCER			0x1e8
 #define ETMEXTINSELR		0x1ec
 #define ETMTESSEICR		0x1f0
 #define ETMEIBCR		0x1f4
 #define ETMTSEVR		0x1f8
 #define ETMAUXCR		0x1fc
 #define ETMTRACEIDR		0x200
 #define ETMVMIDCVR		0x240
 /* Management registers (0x300-0x314) */
 #define ETMOSLAR		0x300
 #define ETMOSLSR		0x304
 #define ETMOSSRR		0x308
 #define ETMPDCR			0x310
 #define ETMPDSR			0x314
 #define ETM_MAX_ADDR_CMP	16
 #define ETM_MAX_CNTR		4
 #define ETM_MAX_CTXID_CMP	3

 /* Register definition */
 /* ETMCR - 0x00 */
 #define ETMCR_PWD_DWN		BIT(0)
 #define ETMCR_STALL_MODE	BIT(7)
 #define ETMCR_BRANCH_BROADCAST	BIT(8)
 #define ETMCR_ETM_PRG		BIT(10)
 #define ETMCR_ETM_EN		BIT(11)
 #define ETMCR_CYC_ACC		BIT(12)
 #define ETMCR_CTXID_SIZE	(BIT(14)|BIT(15))
 #define ETMCR_TIMESTAMP_EN	BIT(28)
 #define ETMCR_RETURN_STACK	BIT(29)
 /* ETMCCR - 0x04 */
 #define ETMCCR_FIFOFULL		BIT(23)
 /* ETMPDCR - 0x310 */
 #define ETMPDCR_PWD_UP		BIT(3)
 /* ETMTECR1 - 0x024 */
 #define ETMTECR1_ADDR_COMP_1	BIT(0)
 #define ETMTECR1_INC_EXC	BIT(24)
 #define ETMTECR1_START_STOP	BIT(25)
 /* ETMCCER - 0x1E8 */
 #define ETMCCER_TIMESTAMP	BIT(22)
 #define ETMCCER_RETSTACK	BIT(23)

 #define ETM_MODE_EXCLUDE	BIT(0)
 #define ETM_MODE_CYCACC		BIT(1)
 #define ETM_MODE_STALL		BIT(2)
 #define ETM_MODE_TIMESTAMP	BIT(3)
 #define ETM_MODE_CTXID		BIT(4)
 #define ETM_MODE_BBROAD		BIT(5)
 #define ETM_MODE_RET_STACK	BIT(6)
 #define ETM_MODE_ALL		(ETM_MODE_EXCLUDE | ETM_MODE_CYCACC | \
 				 ETM_MODE_STALL | ETM_MODE_TIMESTAMP | \
 				 ETM_MODE_BBROAD | ETM_MODE_RET_STACK | \
 				 ETM_MODE_CTXID | ETM_MODE_EXCL_KERN | \
 				 ETM_MODE_EXCL_USER)

 #define ETM_SQR_MASK		0x3
 #define ETM_TRACEID_MASK	0x3f
 #define ETM_EVENT_MASK		0x1ffff
 #define ETM_SYNC_MASK		0xfff
 #define ETM_ALL_MASK		0xffffffff

 #define ETMSR_PROG_BIT		1
 #define ETM_SEQ_STATE_MAX_VAL	(0x2)
 #define PORT_SIZE_MASK		(GENMASK(21, 21) | GENMASK(6, 4))

 #define ETM_HARD_WIRE_RES_A	/* Hard wired, always true */	\
 				((0x0f << 0)	|		\
 				/* Resource index A */		\
 				(0x06 << 4))

 #define ETM_ADD_COMP_0		/* Single addr comparator 1 */	\
 				((0x00 << 7)	|		\
 				/* Resource index B */		\
 				(0x00 << 11))

 #define ETM_EVENT_NOT_A		BIT(14) /* NOT(A) */

 #define ETM_DEFAULT_EVENT_VAL	(ETM_HARD_WIRE_RES_A	|	\
 				 ETM_ADD_COMP_0		|	\
 				 ETM_EVENT_NOT_A)

 /**
  * struct etm_config - configuration information related to an ETM
  * @mode:	controls various modes supported by this ETM/PTM.
  * @ctrl:	used in conjunction with @mode.
  * @trigger_event: setting for register ETMTRIGGER.
  * @startstop_ctrl: setting for register ETMTSSCR.
  * @enable_event: setting for register ETMTEEVR.
  * @enable_ctrl1: setting for register ETMTECR1.
  * @enable_ctrl2: setting for register ETMTECR2.
  * @fifofull_level: setting for register ETMFFLR.
  * @addr_idx:	index for the address comparator selection.
  * @addr_val:	value for address comparator register.
  * @addr_acctype: access type for address comparator register.
  * @addr_type:	current status of the comparator register.
  * @cntr_idx:	index for the counter register selection.
  * @cntr_rld_val: reload value of a counter register.
  * @cntr_event:	control for counter enable register.
  * @cntr_rld_event: value for counter reload event register.
  * @cntr_val:	counter value register.
  * @seq_12_event: event causing the transition from 1 to 2.
  * @seq_21_event: event causing the transition from 2 to 1.
  * @seq_23_event: event causing the transition from 2 to 3.
  * @seq_31_event: event causing the transition from 3 to 1.
  * @seq_32_event: event causing the transition from 3 to 2.
  * @seq_13_event: event causing the transition from 1 to 3.
  * @seq_curr_state: current value of the sequencer register.
  * @ctxid_idx: index for the context ID registers.
  * @ctxid_pid: value for the context ID to trigger on.
  * @ctxid_vpid:	Virtual PID seen by users if PID namespace is enabled, otherwise
  *		the same value of ctxid_pid.
  * @ctxid_mask: mask applicable to all the context IDs.
  * @sync_freq:	Synchronisation frequency.
  * @timestamp_event: Defines an event that requests the insertion
  *		     of a timestamp into the trace stream.
  */
 struct etm_config {
 	u32				mode;
 	u32				ctrl;
 	u32				trigger_event;
 	u32				startstop_ctrl;
 	u32				enable_event;
 	u32				enable_ctrl1;
 	u32				enable_ctrl2;
 	u32				fifofull_level;
 	u8				addr_idx;
 	u32				addr_val[ETM_MAX_ADDR_CMP];
 	u32				addr_acctype[ETM_MAX_ADDR_CMP];
 	u32				addr_type[ETM_MAX_ADDR_CMP];
 	u8				cntr_idx;
 	u32				cntr_rld_val[ETM_MAX_CNTR];
 	u32				cntr_event[ETM_MAX_CNTR];
 	u32				cntr_rld_event[ETM_MAX_CNTR];
 	u32				cntr_val[ETM_MAX_CNTR];
 	u32				seq_12_event;
 	u32				seq_21_event;
 	u32				seq_23_event;
 	u32				seq_31_event;
 	u32				seq_32_event;
 	u32				seq_13_event;
 	u32				seq_curr_state;
 	u8				ctxid_idx;
 	u32				ctxid_pid[ETM_MAX_CTXID_CMP];
 	u32				ctxid_vpid[ETM_MAX_CTXID_CMP];
 	u32				ctxid_mask;
 	u32				sync_freq;
 	u32				timestamp_event;
 };

 /**
  * struct etm_drvdata - specifics associated to an ETM component
  * @base:	memory mapped base address for this component.
  * @dev:	the device entity associated to this component.
  * @atclk:	optional clock for the core parts of the ETM.
  * @csdev:	component vitals needed by the framework.
  * @spinlock:	only one at a time pls.
  * @cpu:	the cpu this component is affined to.
  * @port_size:	port size as reported by ETMCR bit 4-6 and 21.
  * @arch:	ETM/PTM version number.
  * @use_cpu14:	true if management registers need to be accessed via CP14.
  * @mode:	this tracer's mode, i.e sysFS, Perf or disabled.
  * @sticky_enable: true if ETM base configuration has been done.
  * @boot_enable:true if we should start tracing at boot time.
  * @os_unlock:	true if access to management registers is allowed.
  * @nr_addr_cmp:Number of pairs of address comparators as found in ETMCCR.
  * @nr_cntr:	Number of counters as found in ETMCCR bit 13-15.
  * @nr_ext_inp:	Number of external input as found in ETMCCR bit 17-19.
  * @nr_ext_out:	Number of external output as found in ETMCCR bit 20-22.
  * @nr_ctxid_cmp: Number of contextID comparators as found in ETMCCR bit 24-25.
  * @etmccr:	value of register ETMCCR.
  * @etmccer:	value of register ETMCCER.
  * @traceid:	value of the current ID for this component.
  * @config:	structure holding configuration parameters.
  */
 struct etm_drvdata {
 	void __iomem			*base;
 	struct device			*dev;
 	struct clk			*atclk;
 	struct coresight_device		*csdev;
 	spinlock_t			spinlock;
 	int				cpu;
 	int				port_size;
 	u8				arch;
 	bool				use_cp14;
 	local_t				mode;
 	bool				sticky_enable;
 	bool				boot_enable;
 	bool				os_unlock;
 	u8				nr_addr_cmp;
 	u8				nr_cntr;
 	u8				nr_ext_inp;
 	u8				nr_ext_out;
 	u8				nr_ctxid_cmp;
 	u32				etmccr;
 	u32				etmccer;
 	u32				traceid;
 	struct etm_config		config;
 };

 static inline void etm_writel(struct etm_drvdata *drvdata,
 			      u32 val, u32 off)
 {
 	if (drvdata->use_cp14) {
 		if (etm_writel_cp14(off, val)) {
 			dev_err(drvdata->dev,
 				"invalid CP14 access to ETM reg: %#x", off);
 		}
 	} else {
 		writel_relaxed(val, drvdata->base + off);
 	}
 }

 static inline unsigned int etm_readl(struct etm_drvdata *drvdata, u32 off)
 {
 	u32 val;

 	if (drvdata->use_cp14) {
 		if (etm_readl_cp14(off, &val)) {
 			dev_err(drvdata->dev,
 				"invalid CP14 access to ETM reg: %#x", off);
 		}
 	} else {
 		val = readl_relaxed(drvdata->base + off);
 	}

 	return val;
 }

 extern const struct attribute_group *coresight_etm_groups[];
 int etm_get_trace_id(struct etm_drvdata *drvdata);
 void etm_set_default(struct etm_config *config);
 void etm_config_trace_mode(struct etm_config *config);
 struct etm_config *get_etm_config(struct etm_drvdata *drvdata);
 #endif
	/* SPDX-License-Identifier: GPL-2.0 */
	/*
	* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
	*/

	#ifndef _CORESIGHT_CORESIGHT_ETM_H
	#define _CORESIGHT_CORESIGHT_ETM_H

	#include <asm/local.h>
	#include <linux/spinlock.h>
	#include "coresight-priv.h"

	/*
	* Device registers:
	* 0x000 - 0x2FC: Trace registers
	* 0x300 - 0x314: Management registers
	* 0x318 - 0xEFC: Trace registers
	*
	* Coresight registers
	* 0xF00 - 0xF9C: Management registers
	* 0xFA0 - 0xFA4: Management registers in PFTv1.0
	* Trace registers in PFTv1.1
	* 0xFA8 - 0xFFC: Management registers
	*/

	/* Trace registers (0x000-0x2FC) */
	#define ETMCR 0x000
	#define ETMCCR 0x004
	#define ETMTRIGGER 0x008
	#define ETMSR 0x010
	#define ETMSCR 0x014
	#define ETMTSSCR 0x018
	#define ETMTECR2 0x01c
	#define ETMTEEVR 0x020
	#define ETMTECR1 0x024
	#define ETMFFLR 0x02c
	#define ETMACVRn(n) (0x040 + (n * 4))
	#define ETMACTRn(n) (0x080 + (n * 4))
	#define ETMCNTRLDVRn(n) (0x140 + (n * 4))
	#define ETMCNTENRn(n) (0x150 + (n * 4))
	#define ETMCNTRLDEVRn(n) (0x160 + (n * 4))
	#define ETMCNTVRn(n) (0x170 + (n * 4))
	#define ETMSQ12EVR 0x180
	#define ETMSQ21EVR 0x184
	#define ETMSQ23EVR 0x188
	#define ETMSQ31EVR 0x18c
	#define ETMSQ32EVR 0x190
	#define ETMSQ13EVR 0x194
	#define ETMSQR 0x19c
	#define ETMEXTOUTEVRn(n) (0x1a0 + (n * 4))
	#define ETMCIDCVRn(n) (0x1b0 + (n * 4))
	#define ETMCIDCMR 0x1bc
	#define ETMIMPSPEC0 0x1c0
	#define ETMIMPSPEC1 0x1c4
	#define ETMIMPSPEC2 0x1c8
	#define ETMIMPSPEC3 0x1cc
	#define ETMIMPSPEC4 0x1d0
	#define ETMIMPSPEC5 0x1d4
	#define ETMIMPSPEC6 0x1d8
	#define ETMIMPSPEC7 0x1dc
	#define ETMSYNCFR 0x1e0
	#define ETMIDR 0x1e4
	#define ETMCCER 0x1e8
	#define ETMEXTINSELR 0x1ec
	#define ETMTESSEICR 0x1f0
	#define ETMEIBCR 0x1f4
	#define ETMTSEVR 0x1f8
	#define ETMAUXCR 0x1fc
	#define ETMTRACEIDR 0x200
	#define ETMVMIDCVR 0x240
	/* Management registers (0x300-0x314) */
	#define ETMOSLAR 0x300
	#define ETMOSLSR 0x304
	#define ETMOSSRR 0x308
	#define ETMPDCR 0x310
	#define ETMPDSR 0x314
	#define ETM_MAX_ADDR_CMP 16
	#define ETM_MAX_CNTR 4
	#define ETM_MAX_CTXID_CMP 3

	/* Register definition */
	/* ETMCR - 0x00 */
	#define ETMCR_PWD_DWN BIT(0)
	#define ETMCR_STALL_MODE BIT(7)
	#define ETMCR_BRANCH_BROADCAST BIT(8)
	#define ETMCR_ETM_PRG BIT(10)
	#define ETMCR_ETM_EN BIT(11)
	#define ETMCR_CYC_ACC BIT(12)
	#define ETMCR_CTXID_SIZE (BIT(14)\|BIT(15))
	#define ETMCR_TIMESTAMP_EN BIT(28)
	#define ETMCR_RETURN_STACK BIT(29)
	/* ETMCCR - 0x04 */
	#define ETMCCR_FIFOFULL BIT(23)
	/* ETMPDCR - 0x310 */
	#define ETMPDCR_PWD_UP BIT(3)
	/* ETMTECR1 - 0x024 */
	#define ETMTECR1_ADDR_COMP_1 BIT(0)
	#define ETMTECR1_INC_EXC BIT(24)
	#define ETMTECR1_START_STOP BIT(25)
	/* ETMCCER - 0x1E8 */
	#define ETMCCER_TIMESTAMP BIT(22)
	#define ETMCCER_RETSTACK BIT(23)

	#define ETM_MODE_EXCLUDE BIT(0)
	#define ETM_MODE_CYCACC BIT(1)
	#define ETM_MODE_STALL BIT(2)
	#define ETM_MODE_TIMESTAMP BIT(3)
	#define ETM_MODE_CTXID BIT(4)
	#define ETM_MODE_BBROAD BIT(5)
	#define ETM_MODE_RET_STACK BIT(6)
	#define ETM_MODE_ALL (ETM_MODE_EXCLUDE \| ETM_MODE_CYCACC \| \
	ETM_MODE_STALL \| ETM_MODE_TIMESTAMP \| \
	ETM_MODE_BBROAD \| ETM_MODE_RET_STACK \| \
	ETM_MODE_CTXID \| ETM_MODE_EXCL_KERN \| \
	ETM_MODE_EXCL_USER)

	#define ETM_SQR_MASK 0x3
	#define ETM_TRACEID_MASK 0x3f
	#define ETM_EVENT_MASK 0x1ffff
	#define ETM_SYNC_MASK 0xfff
	#define ETM_ALL_MASK 0xffffffff

	#define ETMSR_PROG_BIT 1
	#define ETM_SEQ_STATE_MAX_VAL (0x2)
	#define PORT_SIZE_MASK (GENMASK(21, 21) \| GENMASK(6, 4))

	#define ETM_HARD_WIRE_RES_A /* Hard wired, always true */ \
	((0x0f << 0) \| \
	/* Resource index A */ \
	(0x06 << 4))

	#define ETM_ADD_COMP_0 /* Single addr comparator 1 */ \
	((0x00 << 7) \| \
	/* Resource index B */ \
	(0x00 << 11))

	#define ETM_EVENT_NOT_A BIT(14) /* NOT(A) */

	#define ETM_DEFAULT_EVENT_VAL (ETM_HARD_WIRE_RES_A \| \
	ETM_ADD_COMP_0 \| \
	ETM_EVENT_NOT_A)

	/**
	* struct etm_config - configuration information related to an ETM
	* @mode: controls various modes supported by this ETM/PTM.
	* @ctrl: used in conjunction with @mode.
	* @trigger_event: setting for register ETMTRIGGER.
	* @startstop_ctrl: setting for register ETMTSSCR.
	* @enable_event: setting for register ETMTEEVR.
	* @enable_ctrl1: setting for register ETMTECR1.
	* @enable_ctrl2: setting for register ETMTECR2.
	* @fifofull_level: setting for register ETMFFLR.
	* @addr_idx: index for the address comparator selection.
	* @addr_val: value for address comparator register.
	* @addr_acctype: access type for address comparator register.
	* @addr_type: current status of the comparator register.
	* @cntr_idx: index for the counter register selection.
	* @cntr_rld_val: reload value of a counter register.
	* @cntr_event: control for counter enable register.
	* @cntr_rld_event: value for counter reload event register.
	* @cntr_val: counter value register.
	* @seq_12_event: event causing the transition from 1 to 2.
	* @seq_21_event: event causing the transition from 2 to 1.
	* @seq_23_event: event causing the transition from 2 to 3.
	* @seq_31_event: event causing the transition from 3 to 1.
	* @seq_32_event: event causing the transition from 3 to 2.
	* @seq_13_event: event causing the transition from 1 to 3.
	* @seq_curr_state: current value of the sequencer register.
	* @ctxid_idx: index for the context ID registers.
	* @ctxid_pid: value for the context ID to trigger on.
	* @ctxid_vpid: Virtual PID seen by users if PID namespace is enabled, otherwise
	* the same value of ctxid_pid.
	* @ctxid_mask: mask applicable to all the context IDs.
	* @sync_freq: Synchronisation frequency.
	* @timestamp_event: Defines an event that requests the insertion
	* of a timestamp into the trace stream.
	*/
	struct etm_config {
	u32 mode;
	u32 ctrl;
	u32 trigger_event;
	u32 startstop_ctrl;
	u32 enable_event;
	u32 enable_ctrl1;
	u32 enable_ctrl2;
	u32 fifofull_level;
	u8 addr_idx;
	u32 addr_val[ETM_MAX_ADDR_CMP];
	u32 addr_acctype[ETM_MAX_ADDR_CMP];
	u32 addr_type[ETM_MAX_ADDR_CMP];
	u8 cntr_idx;
	u32 cntr_rld_val[ETM_MAX_CNTR];
	u32 cntr_event[ETM_MAX_CNTR];
	u32 cntr_rld_event[ETM_MAX_CNTR];
	u32 cntr_val[ETM_MAX_CNTR];
	u32 seq_12_event;
	u32 seq_21_event;
	u32 seq_23_event;
	u32 seq_31_event;
	u32 seq_32_event;
	u32 seq_13_event;
	u32 seq_curr_state;
	u8 ctxid_idx;
	u32 ctxid_pid[ETM_MAX_CTXID_CMP];
	u32 ctxid_vpid[ETM_MAX_CTXID_CMP];
	u32 ctxid_mask;
	u32 sync_freq;
	u32 timestamp_event;
	};

	/**
	* struct etm_drvdata - specifics associated to an ETM component
	* @base: memory mapped base address for this component.
	* @dev: the device entity associated to this component.
	* @atclk: optional clock for the core parts of the ETM.
	* @csdev: component vitals needed by the framework.
	* @spinlock: only one at a time pls.
	* @cpu: the cpu this component is affined to.
	* @port_size: port size as reported by ETMCR bit 4-6 and 21.
	* @arch: ETM/PTM version number.
	* @use_cpu14: true if management registers need to be accessed via CP14.
	* @mode: this tracer's mode, i.e sysFS, Perf or disabled.
	* @sticky_enable: true if ETM base configuration has been done.
	* @boot_enable:true if we should start tracing at boot time.
	* @os_unlock: true if access to management registers is allowed.
	* @nr_addr_cmp:Number of pairs of address comparators as found in ETMCCR.
	* @nr_cntr: Number of counters as found in ETMCCR bit 13-15.
	* @nr_ext_inp: Number of external input as found in ETMCCR bit 17-19.
	* @nr_ext_out: Number of external output as found in ETMCCR bit 20-22.
	* @nr_ctxid_cmp: Number of contextID comparators as found in ETMCCR bit 24-25.
	* @etmccr: value of register ETMCCR.
	* @etmccer: value of register ETMCCER.
	* @traceid: value of the current ID for this component.
	* @config: structure holding configuration parameters.
	*/
	struct etm_drvdata {
	void __iomem *base;
	struct device *dev;
	struct clk *atclk;
	struct coresight_device *csdev;
	spinlock_t spinlock;
	int cpu;
	int port_size;
	u8 arch;
	bool use_cp14;
	local_t mode;
	bool sticky_enable;
	bool boot_enable;
	bool os_unlock;
	u8 nr_addr_cmp;
	u8 nr_cntr;
	u8 nr_ext_inp;
	u8 nr_ext_out;
	u8 nr_ctxid_cmp;
	u32 etmccr;
	u32 etmccer;
	u32 traceid;
	struct etm_config config;
	};

	static inline void etm_writel(struct etm_drvdata *drvdata,
	u32 val, u32 off)
	{
	if (drvdata->use_cp14) {
	if (etm_writel_cp14(off, val)) {
	dev_err(drvdata->dev,
	"invalid CP14 access to ETM reg: %#x", off);
	}
	} else {
	writel_relaxed(val, drvdata->base + off);
	}
	}

	static inline unsigned int etm_readl(struct etm_drvdata *drvdata, u32 off)
	{
	u32 val;

	if (drvdata->use_cp14) {
	if (etm_readl_cp14(off, &val)) {
	dev_err(drvdata->dev,
	"invalid CP14 access to ETM reg: %#x", off);
	}
	} else {
	val = readl_relaxed(drvdata->base + off);
	}

	return val;
	}

	extern const struct attribute_group *coresight_etm_groups[];
	int etm_get_trace_id(struct etm_drvdata *drvdata);
	void etm_set_default(struct etm_config *config);
	void etm_config_trace_mode(struct etm_config *config);
	struct etm_config get_etm_config(struct etm_drvdata drvdata);
	#endif