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Editing: perfmon.h

/*-
 * Copyright 1996 Massachusetts Institute of Technology
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby
 * granted, provided that both the above copyright notice and this
 * permission notice appear in all copies, that both the above
 * copyright notice and this permission notice appear in all
 * supporting documentation, and that the name of M.I.T. not be used
 * in advertising or publicity pertaining to distribution of the
 * software without specific, written prior permission.  M.I.T. makes
 * no representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied
 * warranty.
 * 
 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

/*
 * Interface to performance-monitoring counters for Intel Pentium and
 * Pentium Pro CPUs.
 */

#ifndef	_MACHINE_PERFMON_H_
#define	_MACHINE_PERFMON_H_

#ifndef _KERNEL
#include <sys/types.h>
#endif
#include <sys/ioccom.h>

#define	NPMC	2

#define	PMIOSETUP	_IOW('5', 1, struct pmc)
#define	PMIOGET		_IOWR('5', 7, struct pmc)
#define	PMIOSTART	_IOW('5', 2, int)
#define	PMIOSTOP	_IOW('5', 3, int)
#define PMIOREAD	_IOWR('5', 4, struct pmc_data)
#define	PMIORESET	_IOW('5', 5, int)
#define	PMIOTSTAMP	_IOR('5', 6, struct pmc_tstamp)

struct pmc {
	int pmc_num;
	union {
		struct {
			unsigned char pmcus_event;
			unsigned char pmcus_unit;
			unsigned char pmcus_flags;
			unsigned char pmcus_mask;
		} pmcu_s;
		unsigned int pmcu_val;
	} pmc_pmcu;
};

#define	PMC_ALL		(-1)

#define	pmc_event	pmc_pmcu.pmcu_s.pmcus_event
#define	pmc_unit	pmc_pmcu.pmcu_s.pmcus_unit
#define	pmc_flags	pmc_pmcu.pmcu_s.pmcus_flags
#define	pmc_mask	pmc_pmcu.pmcu_s.pmcus_mask
#define	pmc_val		pmc_pmcu.pmcu_val

#define	PMCF_USR	0x01	/* count events in user mode */
#define	PMCF_OS		0x02	/* count events in kernel mode */
#define	PMCF_E		0x04	/* use edge-detection mode */
#define	PMCF_PC		0x08	/* PMx output pin control */
#define	PMCF_INT	0x10	/* APIC interrupt enable (do not use) */
#define	PMCF_EN		0x40	/* enable counters */
#define	PMCF_INV	0x80	/* invert counter mask comparison */

#define	PMCF_SYS_FLAGS	(PMCF_INT | PMCF_EN) /* user cannot set */

struct pmc_data {
	int pmcd_num;
	quad_t pmcd_value;
};

struct pmc_tstamp {
	int pmct_rate;
	quad_t pmct_value;
};

#ifndef _KERNEL

#define	_PATH_PERFMON	"/dev/perfmon"

#else

/*
 * Intra-kernel interface to performance monitoring counters
 */
void	perfmon_init(void);
int	perfmon_avail(void);
int	perfmon_setup(int, unsigned int);
int	perfmon_get(int, unsigned int *);
int	perfmon_fini(int);
int	perfmon_start(int);
int	perfmon_stop(int);
int	perfmon_read(int, quad_t *);
int	perfmon_reset(int);

#endif /* _KERNEL */

/*
 * Pentium Pro performance counters, from Appendix B.
 */
/* Data Cache Unit */
#define	PMC6_DATA_MEM_REFS	0x43
#define	PMC6_DCU_LINES_IN	0x45
#define	PMC6_DCU_M_LINES_IN	0x46
#define	PMC6_DCU_M_LINES_OUT	0x47
#define	PMC6_DCU_MISS_OUTSTANDING 0x48

/* Instruction Fetch Unit */ 
#define	PMC6_IFU_IFETCH		0x80
#define	PMC6_IFU_IFETCH_MISS	0x81
#define	PMC6_ITLB_MISS		0x85
#define	PMC6_IFU_MEM_STALL	0x86
#define	PMC6_ILD_STALL		0x87

/* L2 Cache */
#define	PMC6_L2_IFETCH		0x28 /* MESI */
#define	PMC6_L2_LD		0x29 /* MESI */
#define	PMC6_L2_ST		0x2a /* MESI */
#define	PMC6_L2_LINES_IN	0x24
#define	PMC6_L2_LINES_OUT	0x26
#define	PMC6_L2_M_LINES_INM	0x25
#define	PMC6_L2_M_LINES_OUTM	0x27
#define	PMC6_L2_RQSTS		0x2e /* MESI */
#define	PMC6_L2_ADS		0x21
#define	PMC6_L2_DBUS_BUSY	0x22
#define	PMC6_L2_DBUS_BUSY_RD	0x23

/* External Bus Logic */
#define	PMC6_BUS_DRDY_CLOCKS	0x62
#define	PMC6_BUS_LOCK_CLOCKS	0x63
#define	PMC6_BUS_REQ_OUTSTANDING 0x60
#define	PMC6_BUS_TRAN_BRD	0x65
#define	PMC6_BUS_TRAN_RFO	0x66
#define	PMC6_BUS_TRAN_WB	0x67
#define	PMC6_BUS_TRAN_IFETCH	0x68
#define	PMC6_BUS_TRAN_INVAL	0x69
#define	PMC6_BUS_TRAN_PWR	0x6a
#define	PMC6_BUS_TRAN_P		0x6b
#define	PMC6_BUS_TRAN_IO	0x6c
#define	PMC6_BUS_TRAN_DEF	0x6d
#define	PMC6_BUS_TRAN_BURST	0x6e
#define	PMC6_BUS_TRAN_ANY	0x70
#define	PMC6_BUS_TRAN_MEM	0x6f
#define	PMC6_BUS_DATA_RCV	0x64
#define	PMC6_BUS_BNR_DRV	0x61
#define	PMC6_BUS_HIT_DRV	0x7a
#define	PMC6_BUS_HITM_DRV	0x7b
#define	PMC6_BUS_SNOOP_STALL	0x7e

/* Floating Point Unit */
#define	PMC6_FLOPS		0xc1 /* counter 0 only */
#define	PMC6_FP_COMP_OPS_EXE	0x10 /* counter 0 only */
#define	PMC6_FP_ASSIST		0x11 /* counter 1 only */
#define	PMC6_MUL		0x12 /* counter 1 only */
#define	PMC6_DIV		0x13 /* counter 1 only */
#define	PMC6_CYCLES_DIV_BUSY	0x14 /* counter 0 only */

/* Memory Ordering */
#define	PMC6_LD_BLOCKS		0x03
#define	PMC6_SB_DRAINS		0x04
#define	PMC6_MISALIGN_MEM_REF	0x05

/* Instruction Decoding and Retirement */
#define	PMC6_INST_RETIRED	0xc0
#define	PMC6_UOPS_RETIRED	0xc2
#define	PMC6_INST_DECODER	0xd0 /* (sic) */

/* Interrupts */
#define	PMC6_HW_INT_RX		0xc8
#define	PMC6_CYCLES_INT_MASKED	0xc6
#define	PMC6_CYCLES_INT_PENDING_AND_MASKED 0xc7

/* Branches */
#define	PMC6_BR_INST_RETIRED	0xc4
#define	PMC6_BR_MISS_PRED_RETIRED 0xc5
#define	PMC6_BR_TAKEN_RETIRED	0xc9
#define	PMC6_BR_MISS_PRED_TAKEN_RET 0xca
#define	PMC6_BR_INST_DECODED	0xe0
#define	PMC6_BTB_MISSES		0xe2
#define	PMC6_BR_BOGUS		0xe4
#define	PMC6_BACLEARS		0xe6

/* Stalls */
#define	PMC6_RESOURCE_STALLS	0xa2
#define	PMC6_PARTIAL_RAT_STALLS	0xd2

/* Segment Register Loads */
#define	PMC6_SEGMENT_REG_LOADS	0x06

/* Clocks */
#define	PMC6_CPU_CLK_UNHALTED	0x79

/*
 * Pentium Performance Counters
 * This list comes from the Harvard people, not Intel.
 */
#define	PMC5_DATA_READ		0
#define	PMC5_DATA_WRITE		1
#define	PMC5_DATA_TLB_MISS	2
#define	PMC5_DATA_READ_MISS	3
#define	PMC5_DATA_WRITE_MISS	4
#define	PMC5_WRITE_M_E		5
#define	PMC5_DATA_LINES_WBACK	6
#define	PMC5_DATA_CACHE_SNOOP	7
#define	PMC5_DATA_CACHE_SNOOP_HIT 8
#define	PMC5_MEM_ACCESS_BOTH	9
#define	PMC5_BANK_CONFLICTS	10
#define	PMC5_MISALIGNED_DATA	11
#define	PMC5_INST_READ		12
#define	PMC5_INST_TLB_MISS	13
#define	PMC5_INST_CACHE_MISS	14
#define	PMC5_SEGMENT_REG_LOAD	15
#define	PMC5_BRANCHES		18
#define	PMC5_BTB_HITS		19
#define	PMC5_BRANCH_TAKEN	20
#define	PMC5_PIPELINE_FLUSH	21
#define	PMC5_INST_EXECUTED	22
#define PMC5_INST_EXECUTED_V	23
#define	PMC5_BUS_UTILIZATION	24
#define	PMC5_WRITE_BACKUP_STALL	25
#define	PMC5_DATA_READ_STALL	26
#define	PMC5_WRITE_E_M_STALL	27
#define	PMC5_LOCKED_BUS		28
#define	PMC5_IO_CYCLE		29
#define	PMC5_NONCACHE_MEMORY	30
#define	PMC5_ADDR_GEN_INTERLOCK	31
#define	PMC5_FLOPS		34
#define	PMC5_BP0_MATCH		35
#define	PMC5_BP1_MATCH		36
#define	PMC5_BP2_MATCH		37
#define	PMC5_BP3_MATCH		38
#define	PMC5_HW_INTR		39
#define	PMC5_DATA_RW		40
#define	PMC5_DATA_RW_MISS	41

#endif /* !_MACHINE_PERFMON_H_ */

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