/* 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 <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
* 0xF00: Management registers
* 0xFA0 - 0xFA4: Trace registers
* 0xFA8 - 0xFFC: Management registers
*/
/* Trace registers (0x000-0x2FC) */
/* Main control and configuration registers */
#define TRCPRGCTLR 0x004
#define TRCPROCSELR 0x008
#define TRCSTATR 0x00C
#define TRCCONFIGR 0x010
#define TRCAUXCTLR 0x018
#define TRCEVENTCTL0R 0x020
#define TRCEVENTCTL1R 0x024
#define TRCSTALLCTLR 0x02C
#define TRCTSCTLR 0x030
#define TRCSYNCPR 0x034
#define TRCCCCTLR 0x038
#define TRCBBCTLR 0x03C
#define TRCTRACEIDR 0x040
#define TRCQCTLR 0x044
/* Filtering control registers */
#define TRCVICTLR 0x080
#define TRCVIIECTLR 0x084
#define TRCVISSCTLR 0x088
#define TRCVIPCSSCTLR 0x08C
#define TRCVDCTLR 0x0A0
#define TRCVDSACCTLR 0x0A4
#define TRCVDARCCTLR 0x0A8
/* Derived resources registers */
#define TRCSEQEVRn(n) (0x100 + (n * 4))
#define TRCSEQRSTEVR 0x118
#define TRCSEQSTR 0x11C
#define TRCEXTINSELR 0x120
#define TRCCNTRLDVRn(n) (0x140 + (n * 4))
#define TRCCNTCTLRn(n) (0x150 + (n * 4))
#define TRCCNTVRn(n) (0x160 + (n * 4))
/* ID registers */
#define TRCIDR8 0x180
#define TRCIDR9 0x184
#define TRCIDR10 0x188
#define TRCIDR11 0x18C
#define TRCIDR12 0x190
#define TRCIDR13 0x194
#define TRCIMSPEC0 0x1C0
#define TRCIMSPECn(n) (0x1C0 + (n * 4))
#define TRCIDR0 0x1E0
#define TRCIDR1 0x1E4
#define TRCIDR2 0x1E8
#define TRCIDR3 0x1EC
#define TRCIDR4 0x1F0
#define TRCIDR5 0x1F4
#define TRCIDR6 0x1F8
#define TRCIDR7 0x1FC
/* Resource selection registers */
#define TRCRSCTLRn(n) (0x200 + (n * 4))
/* Single-shot comparator registers */
#define TRCSSCCRn(n) (0x280 + (n * 4))
#define TRCSSCSRn(n) (0x2A0 + (n * 4))
#define TRCSSPCICRn(n) (0x2C0 + (n * 4))
/* Management registers (0x300-0x314) */
#define TRCOSLAR 0x300
#define TRCOSLSR 0x304
#define TRCPDCR 0x310
#define TRCPDSR 0x314
/* Trace registers (0x318-0xEFC) */
/* Comparator registers */
#define TRCACVRn(n) (0x400 + (n * 8))
#define TRCACATRn(n) (0x480 + (n * 8))
#define TRCDVCVRn(n) (0x500 + (n * 16))
#define TRCDVCMRn(n) (0x580 + (n * 16))
#define TRCCIDCVRn(n) (0x600 + (n * 8))
#define TRCVMIDCVRn(n) (0x640 + (n * 8))
#define TRCCIDCCTLR0 0x680
#define TRCCIDCCTLR1 0x684
#define TRCVMIDCCTLR0 0x688
#define TRCVMIDCCTLR1 0x68C
/* Management register (0xF00) */
/* Integration control registers */
#define TRCITCTRL 0xF00
/* Trace registers (0xFA0-0xFA4) */
/* Claim tag registers */
#define TRCCLAIMSET 0xFA0
#define TRCCLAIMCLR 0xFA4
/* Management registers (0xFA8-0xFFC) */
#define TRCDEVAFF0 0xFA8
#define TRCDEVAFF1 0xFAC
#define TRCLAR 0xFB0
#define TRCLSR 0xFB4
#define TRCAUTHSTATUS 0xFB8
#define TRCDEVARCH 0xFBC
#define TRCDEVID 0xFC8
#define TRCDEVTYPE 0xFCC
#define TRCPIDR4 0xFD0
#define TRCPIDR5 0xFD4
#define TRCPIDR6 0xFD8
#define TRCPIDR7 0xFDC
#define TRCPIDR0 0xFE0
#define TRCPIDR1 0xFE4
#define TRCPIDR2 0xFE8
#define TRCPIDR3 0xFEC
#define TRCCIDR0 0xFF0
#define TRCCIDR1 0xFF4
#define TRCCIDR2 0xFF8
#define TRCCIDR3 0xFFC
/* ETMv4 resources */
#define ETM_MAX_NR_PE 8
#define ETMv4_MAX_CNTR 4
#define ETM_MAX_SEQ_STATES 4
#define ETM_MAX_EXT_INP_SEL 4
#define ETM_MAX_EXT_INP 256
#define ETM_MAX_EXT_OUT 4
#define ETM_MAX_SINGLE_ADDR_CMP 16
#define ETM_MAX_ADDR_RANGE_CMP (ETM_MAX_SINGLE_ADDR_CMP / 2)
#define ETM_MAX_DATA_VAL_CMP 8
#define ETMv4_MAX_CTXID_CMP 8
#define ETM_MAX_VMID_CMP 8
#define ETM_MAX_PE_CMP 8
#define ETM_MAX_RES_SEL 16
#define ETM_MAX_SS_CMP 8
#define ETM_ARCH_V4 0x40
#define ETMv4_SYNC_MASK 0x1F
#define ETM_CYC_THRESHOLD_MASK 0xFFF
#define ETMv4_EVENT_MASK 0xFF
#define ETM_CNTR_MAX_VAL 0xFFFF
#define ETM_TRACEID_MASK 0x3f
/* ETMv4 programming modes */
#define ETM_MODE_EXCLUDE BIT(0)
#define ETM_MODE_LOAD BIT(1)
#define ETM_MODE_STORE BIT(2)
#define ETM_MODE_LOAD_STORE BIT(3)
#define ETM_MODE_BB BIT(4)
#define ETMv4_MODE_CYCACC BIT(5)
#define ETMv4_MODE_CTXID BIT(6)
#define ETM_MODE_VMID BIT(7)
#define ETM_MODE_COND(val) BMVAL(val, 8, 10)
#define ETMv4_MODE_TIMESTAMP BIT(11)
#define ETM_MODE_RETURNSTACK BIT(12)
#define ETM_MODE_QELEM(val) BMVAL(val, 13, 14)
#define ETM_MODE_DATA_TRACE_ADDR BIT(15)
#define ETM_MODE_DATA_TRACE_VAL BIT(16)
#define ETM_MODE_ISTALL BIT(17)
#define ETM_MODE_DSTALL BIT(18)
#define ETM_MODE_ATB_TRIGGER BIT(19)
#define ETM_MODE_LPOVERRIDE BIT(20)
#define ETM_MODE_ISTALL_EN BIT(21)
#define ETM_MODE_DSTALL_EN BIT(22)
#define ETM_MODE_INSTPRIO BIT(23)
#define ETM_MODE_NOOVERFLOW BIT(24)
#define ETM_MODE_TRACE_RESET BIT(25)
#define ETM_MODE_TRACE_ERR BIT(26)
#define ETM_MODE_VIEWINST_STARTSTOP BIT(27)
#define ETMv4_MODE_ALL (GENMASK(27, 0) | \
ETM_MODE_EXCL_KERN | \
ETM_MODE_EXCL_USER)
#define TRCSTATR_IDLE_BIT 0
#define ETM_DEFAULT_ADDR_COMP 0
/* PowerDown Control Register bits */
#define TRCPDCR_PU BIT(3)
/* secure state access levels */
#define ETM_EXLEVEL_S_APP BIT(8)
#define ETM_EXLEVEL_S_OS BIT(9)
#define ETM_EXLEVEL_S_NA BIT(10)
#define ETM_EXLEVEL_S_HYP BIT(11)
/* non-secure state access levels */
#define ETM_EXLEVEL_NS_APP BIT(12)
#define ETM_EXLEVEL_NS_OS BIT(13)
#define ETM_EXLEVEL_NS_HYP BIT(14)
#define ETM_EXLEVEL_NS_NA BIT(15)
/**
* struct etmv4_config - configuration information related to an ETMv4
* @mode: Controls various modes supported by this ETM.
* @pe_sel: Controls which PE to trace.
* @cfg: Controls the tracing options.
* @eventctrl0: Controls the tracing of arbitrary events.
* @eventctrl1: Controls the behavior of the events that @event_ctrl0 selects.
* @stallctl: If functionality that prevents trace unit buffer overflows
* is available.
* @ts_ctrl: Controls the insertion of global timestamps in the
* trace streams.
* @syncfreq: Controls how often trace synchronization requests occur.
* the TRCCCCTLR register.
* @ccctlr: Sets the threshold value for cycle counting.
* @vinst_ctrl: Controls instruction trace filtering.
* @viiectlr: Set or read, the address range comparators.
* @vissctlr: Set, or read, the single address comparators that control the
* ViewInst start-stop logic.
* @vipcssctlr: Set, or read, which PE comparator inputs can control the
* ViewInst start-stop logic.
* @seq_idx: Sequencor index selector.
* @seq_ctrl: Control for the sequencer state transition control register.
* @seq_rst: Moves the sequencer to state 0 when a programmed event occurs.
* @seq_state: Set, or read the sequencer state.
* @cntr_idx: Counter index seletor.
* @cntrldvr: Sets or returns the reload count value for a counter.
* @cntr_ctrl: Controls the operation of a counter.
* @cntr_val: Sets or returns the value for a counter.
* @res_idx: Resource index selector.
* @res_ctrl: Controls the selection of the resources in the trace unit.
* @ss_ctrl: Controls the corresponding single-shot comparator resource.
* @ss_status: The status of the corresponding single-shot comparator.
* @ss_pe_cmp: Selects the PE comparator inputs for Single-shot control.
* @addr_idx: Address comparator index selector.
* @addr_val: Value for address comparator.
* @addr_acc: Address comparator access type.
* @addr_type: Current status of the comparator register.
* @ctxid_idx: Context ID index selector.
* @ctxid_pid: Value of the context ID comparator.
* @ctxid_vpid: Virtual PID seen by users if PID namespace is enabled, otherwise
* the same value of ctxid_pid.
* @ctxid_mask0:Context ID comparator mask for comparator 0-3.
* @ctxid_mask1:Context ID comparator mask for comparator 4-7.
* @vmid_idx: VM ID index selector.
* @vmid_val: Value of the VM ID comparator.
* @vmid_mask0: VM ID comparator mask for comparator 0-3.
* @vmid_mask1: VM ID comparator mask for comparator 4-7.
* @ext_inp: External input selection.
*/
struct etmv4_config {
u32 mode;
u32 pe_sel;
u32 cfg;
u32 eventctrl0;
u32 eventctrl1;
u32 stall_ctrl;
u32 ts_ctrl;
u32 syncfreq;
u32 ccctlr;
u32 bb_ctrl;
u32 vinst_ctrl;
u32 viiectlr;
u32 vissctlr;
u32 vipcssctlr;
u8 seq_idx;
u32 seq_ctrl[ETM_MAX_SEQ_STATES];
u32 seq_rst;
u32 seq_state;
u8 cntr_idx;
u32 cntrldvr[ETMv4_MAX_CNTR];
u32 cntr_ctrl[ETMv4_MAX_CNTR];
u32 cntr_val[ETMv4_MAX_CNTR];
u8 res_idx;
u32 res_ctrl[ETM_MAX_RES_SEL];
u32 ss_ctrl[ETM_MAX_SS_CMP];
u32 ss_status[ETM_MAX_SS_CMP];
u32 ss_pe_cmp[ETM_MAX_SS_CMP];
u8 addr_idx;
u64 addr_val[ETM_MAX_SINGLE_ADDR_CMP];
u64 addr_acc[ETM_MAX_SINGLE_ADDR_CMP];
u8 addr_type[ETM_MAX_SINGLE_ADDR_CMP];
u8 ctxid_idx;
u64 ctxid_pid[ETMv4_MAX_CTXID_CMP];
u64 ctxid_vpid[ETMv4_MAX_CTXID_CMP];
u32 ctxid_mask0;
u32 ctxid_mask1;
u8 vmid_idx;
u64 vmid_val[ETM_MAX_VMID_CMP];
u32 vmid_mask0;
u32 vmid_mask1;
u32 ext_inp;
};
/**
* struct etm4_drvdata - specifics associated to an ETM component
* @base: Memory mapped base address for this component.
* @dev: The device entity associated to this component.
* @csdev: Component vitals needed by the framework.
* @spinlock: Only one at a time pls.
* @mode: This tracer's mode, i.e sysFS, Perf or disabled.
* @cpu: The cpu this component is affined to.
* @arch: ETM version number.
* @nr_pe: The number of processing entity available for tracing.
* @nr_pe_cmp: The number of processing entity comparator inputs that are
* available for tracing.
* @nr_addr_cmp:Number of pairs of address comparators available
* as found in ETMIDR4 0-3.
* @nr_cntr: Number of counters as found in ETMIDR5 bit 28-30.
* @nr_ext_inp: Number of external input.
* @numcidc: Number of contextID comparators.
* @numvmidc: Number of VMID comparators.
* @nrseqstate: The number of sequencer states that are implemented.
* @nr_event: Indicates how many events the trace unit support.
* @nr_resource:The number of resource selection pairs available for tracing.
* @nr_ss_cmp: Number of single-shot comparator controls that are available.
* @trcid: value of the current ID for this component.
* @trcid_size: Indicates the trace ID width.
* @ts_size: Global timestamp size field.
* @ctxid_size: Size of the context ID field to consider.
* @vmid_size: Size of the VM ID comparator to consider.
* @ccsize: Indicates the size of the cycle counter in bits.
* @ccitmin: minimum value that can be programmed in
* @s_ex_level: In secure state, indicates whether instruction tracing is
* supported for the corresponding Exception level.
* @ns_ex_level:In non-secure state, indicates whether instruction tracing is
* supported for the corresponding Exception level.
* @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.
* @instrp0: Tracing of load and store instructions
* as P0 elements is supported.
* @trcbb: Indicates if the trace unit supports branch broadcast tracing.
* @trccond: If the trace unit supports conditional
* instruction tracing.
* @retstack: Indicates if the implementation supports a return stack.
* @trccci: Indicates if the trace unit supports cycle counting
* for instruction.
* @q_support: Q element support characteristics.
* @trc_error: Whether a trace unit can trace a system
* error exception.
* @syncpr: Indicates if an implementation has a fixed
* synchronization period.
* @stall_ctrl: Enables trace unit functionality that prevents trace
* unit buffer overflows.
* @sysstall: Does the system support stall control of the PE?
* @nooverflow: Indicate if overflow prevention is supported.
* @atbtrig: If the implementation can support ATB triggers
* @lpoverride: If the implementation can support low-power state over.
* @config: structure holding configuration parameters.
*/
struct etmv4_drvdata {
void __iomem *base;
struct device *dev;
struct coresight_device *csdev;
spinlock_t spinlock;
local_t mode;
int cpu;
u8 arch;
u8 nr_pe;
u8 nr_pe_cmp;
u8 nr_addr_cmp;
u8 nr_cntr;
u8 nr_ext_inp;
u8 numcidc;
u8 numvmidc;
u8 nrseqstate;
u8 nr_event;
u8 nr_resource;
u8 nr_ss_cmp;
u8 trcid;
u8 trcid_size;
u8 ts_size;
u8 ctxid_size;
u8 vmid_size;
u8 ccsize;
u8 ccitmin;
u8 s_ex_level;
u8 ns_ex_level;
u8 q_support;
bool sticky_enable;
bool boot_enable;
bool os_unlock;
bool instrp0;
bool trcbb;
bool trccond;
bool retstack;
bool trccci;
bool trc_error;
bool syncpr;
bool stallctl;
bool sysstall;
bool nooverflow;
bool atbtrig;
bool lpoverride;
struct etmv4_config config;
};
/* Address comparator access types */
enum etm_addr_acctype {
ETM_INSTR_ADDR,
ETM_DATA_LOAD_ADDR,
ETM_DATA_STORE_ADDR,
ETM_DATA_LOAD_STORE_ADDR,
};
/* Address comparator context types */
enum etm_addr_ctxtype {
ETM_CTX_NONE,
ETM_CTX_CTXID,
ETM_CTX_VMID,
ETM_CTX_CTXID_VMID,
};
extern const struct attribute_group *coresight_etmv4_groups[];
void etm4_config_trace_mode(struct etmv4_config *config);
#endif