linux-stable-rt/arch/arm/include/asm/hardware/coresight.h

/*
 * linux/arch/arm/include/asm/hardware/coresight.h
 *
 * CoreSight components' registers
 *
 * Copyright (C) 2009 Nokia Corporation.
 * Alexander Shishkin
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __ASM_HARDWARE_CORESIGHT_H
#define __ASM_HARDWARE_CORESIGHT_H

#define TRACER_ACCESSED_BIT	0
#define TRACER_RUNNING_BIT	1
#define TRACER_CYCLE_ACC_BIT	2
#define TRACER_ACCESSED		BIT(TRACER_ACCESSED_BIT)
#define TRACER_RUNNING		BIT(TRACER_RUNNING_BIT)
#define TRACER_CYCLE_ACC	BIT(TRACER_CYCLE_ACC_BIT)

struct tracectx {
	unsigned int	etb_bufsz;
	void __iomem	*etb_regs;
	void __iomem	*etm_regs;
	unsigned long	flags;
	int		ncmppairs;
	int		etm_portsz;
	struct device	*dev;
	struct clk	*emu_clk;
	struct mutex	mutex;
};

#define TRACER_TIMEOUT 10000

#define etm_writel(t, v, x) \
	(__raw_writel((v), (t)->etm_regs + (x)))
#define etm_readl(t, x) (__raw_readl((t)->etm_regs + (x)))

/* CoreSight Management Registers */
#define CSMR_LOCKACCESS 0xfb0
#define CSMR_LOCKSTATUS 0xfb4
#define CSMR_AUTHSTATUS 0xfb8
#define CSMR_DEVID	0xfc8
#define CSMR_DEVTYPE	0xfcc
/* CoreSight Component Registers */
#define CSCR_CLASS	0xff4

#define CSCR_PRSR	0x314

#define UNLOCK_MAGIC	0xc5acce55

/* ETM control register, "ETM Architecture", 3.3.1 */
#define ETMR_CTRL		0
#define ETMCTRL_POWERDOWN	1
#define ETMCTRL_PROGRAM		(1 << 10)
#define ETMCTRL_PORTSEL		(1 << 11)
#define ETMCTRL_DO_CONTEXTID	(3 << 14)
#define ETMCTRL_PORTMASK1	(7 << 4)
#define ETMCTRL_PORTMASK2	(1 << 21)
#define ETMCTRL_PORTMASK	(ETMCTRL_PORTMASK1 | ETMCTRL_PORTMASK2)
#define ETMCTRL_PORTSIZE(x) ((((x) & 7) << 4) | (!!((x) & 8)) << 21)
#define ETMCTRL_DO_CPRT		(1 << 1)
#define ETMCTRL_DATAMASK	(3 << 2)
#define ETMCTRL_DATA_DO_DATA	(1 << 2)
#define ETMCTRL_DATA_DO_ADDR	(1 << 3)
#define ETMCTRL_DATA_DO_BOTH	(ETMCTRL_DATA_DO_DATA | ETMCTRL_DATA_DO_ADDR)
#define ETMCTRL_BRANCH_OUTPUT	(1 << 8)
#define ETMCTRL_CYCLEACCURATE	(1 << 12)

/* ETM configuration code register */
#define ETMR_CONFCODE		(0x04)

/* ETM trace start/stop resource control register */
#define ETMR_TRACESSCTRL	(0x18)

/* ETM trigger event register */
#define ETMR_TRIGEVT		(0x08)

/* address access type register bits, "ETM architecture",
 * table 3-27 */
/* - access type */
#define ETMAAT_IFETCH		0
#define ETMAAT_IEXEC		1
#define ETMAAT_IEXECPASS	2
#define ETMAAT_IEXECFAIL	3
#define ETMAAT_DLOADSTORE	4
#define ETMAAT_DLOAD		5
#define ETMAAT_DSTORE		6
/* - comparison access size */
#define ETMAAT_JAVA		(0 << 3)
#define ETMAAT_THUMB		(1 << 3)
#define ETMAAT_ARM		(3 << 3)
/* - data value comparison control */
#define ETMAAT_NOVALCMP		(0 << 5)
#define ETMAAT_VALMATCH		(1 << 5)
#define ETMAAT_VALNOMATCH	(3 << 5)
/* - exact match */
#define ETMAAT_EXACTMATCH	(1 << 7)
/* - context id comparator control */
#define ETMAAT_IGNCONTEXTID	(0 << 8)
#define ETMAAT_VALUE1		(1 << 8)
#define ETMAAT_VALUE2		(2 << 8)
#define ETMAAT_VALUE3		(3 << 8)
/* - security level control */
#define ETMAAT_IGNSECURITY	(0 << 10)
#define ETMAAT_NSONLY		(1 << 10)
#define ETMAAT_SONLY		(2 << 10)

#define ETMR_COMP_VAL(x)	(0x40 + (x) * 4)
#define ETMR_COMP_ACC_TYPE(x)	(0x80 + (x) * 4)

/* ETM status register, "ETM Architecture", 3.3.2 */
#define ETMR_STATUS		(0x10)
#define ETMST_OVERFLOW		(1 << 0)
#define ETMST_PROGBIT		(1 << 1)
#define ETMST_STARTSTOP		(1 << 2)
#define ETMST_TRIGGER		(1 << 3)

#define etm_progbit(t)		(etm_readl((t), ETMR_STATUS) & ETMST_PROGBIT)
#define etm_started(t)		(etm_readl((t), ETMR_STATUS) & ETMST_STARTSTOP)
#define etm_triggered(t)	(etm_readl((t), ETMR_STATUS) & ETMST_TRIGGER)

#define ETMR_TRACEENCTRL2	0x1c
#define ETMR_TRACEENCTRL	0x24
#define ETMTE_INCLEXCL		(1 << 24)
#define ETMR_TRACEENEVT		0x20
#define ETMCTRL_OPTS		(ETMCTRL_DO_CPRT | \
				ETMCTRL_DATA_DO_ADDR | \
				ETMCTRL_BRANCH_OUTPUT | \
				ETMCTRL_DO_CONTEXTID)

/* ETB registers, "CoreSight Components TRM", 9.3 */
#define ETBR_DEPTH		0x04
#define ETBR_STATUS		0x0c
#define ETBR_READMEM		0x10
#define ETBR_READADDR		0x14
#define ETBR_WRITEADDR		0x18
#define ETBR_TRIGGERCOUNT	0x1c
#define ETBR_CTRL		0x20
#define ETBR_FORMATTERCTRL	0x304
#define ETBFF_ENFTC		1
#define ETBFF_ENFCONT		(1 << 1)
#define ETBFF_FONFLIN		(1 << 4)
#define ETBFF_MANUAL_FLUSH	(1 << 6)
#define ETBFF_TRIGIN		(1 << 8)
#define ETBFF_TRIGEVT		(1 << 9)
#define ETBFF_TRIGFL		(1 << 10)

#define etb_writel(t, v, x) \
	(__raw_writel((v), (t)->etb_regs + (x)))
#define etb_readl(t, x) (__raw_readl((t)->etb_regs + (x)))

#define etm_lock(t) do { etm_writel((t), 0, CSMR_LOCKACCESS); } while (0)
#define etm_unlock(t) \
	do { etm_writel((t), UNLOCK_MAGIC, CSMR_LOCKACCESS); } while (0)

#define etb_lock(t) do { etb_writel((t), 0, CSMR_LOCKACCESS); } while (0)
#define etb_unlock(t) \
	do { etb_writel((t), UNLOCK_MAGIC, CSMR_LOCKACCESS); } while (0)

#endif /* __ASM_HARDWARE_CORESIGHT_H */