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/*
* 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 __P((void));
int perfmon_avail __P((void));
int perfmon_setup __P((int, unsigned int));
int perfmon_get __P((int, unsigned int *));
int perfmon_fini __P((int));
int perfmon_start __P((int));
int perfmon_stop __P((int));
int perfmon_read __P((int, quad_t *));
int perfmon_reset __P((int));
/*
* We pass the device down this interface because in the future
* the different counters might be accessed through separate devices.
*/
int perfmon_close __P((dev_t, int, int, struct proc *));
int perfmon_open __P((dev_t, int, int, struct proc *));
int perfmon_ioctl __P((dev_t, int, caddr_t, int, struct proc *));
#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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