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/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _CORESIGHT_CORESIGHT_ETM_H
#define _CORESIGHT_CORESIGHT_ETM_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_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)
/* 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 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_ALL 0x1f
#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.
* @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 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.
* @enable: is this ETM/PTM currently tracing.
* @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;
bool enable;
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;
};
enum etm_addr_type {
ETM_ADDR_TYPE_NONE,
ETM_ADDR_TYPE_SINGLE,
ETM_ADDR_TYPE_RANGE,
ETM_ADDR_TYPE_START,
ETM_ADDR_TYPE_STOP,
};
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);
struct etm_config *get_etm_config(struct etm_drvdata *drvdata);
#endif
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