/*
* Copyright (C) 2001-2003 Hewlett-Packard Co
* Stephane Eranian <eranian@hpl.hp.com>
*/
#ifndef _UAPI_ASM_IA64_PERFMON_H
#define _UAPI_ASM_IA64_PERFMON_H
/*
* perfmon commands supported on all CPU models
*/
#define PFM_WRITE_PMCS 0x01
#define PFM_WRITE_PMDS 0x02
#define PFM_READ_PMDS 0x03
#define PFM_STOP 0x04
#define PFM_START 0x05
#define PFM_ENABLE 0x06 /* obsolete */
#define PFM_DISABLE 0x07 /* obsolete */
#define PFM_CREATE_CONTEXT 0x08
#define PFM_DESTROY_CONTEXT 0x09 /* obsolete use close() */
#define PFM_RESTART 0x0a
#define PFM_PROTECT_CONTEXT 0x0b /* obsolete */
#define PFM_GET_FEATURES 0x0c
#define PFM_DEBUG 0x0d
#define PFM_UNPROTECT_CONTEXT 0x0e /* obsolete */
#define PFM_GET_PMC_RESET_VAL 0x0f
#define PFM_LOAD_CONTEXT 0x10
#define PFM_UNLOAD_CONTEXT 0x11
/*
* PMU model specific commands (may not be supported on all PMU models)
*/
#define PFM_WRITE_IBRS 0x20
#define PFM_WRITE_DBRS 0x21
/*
* context flags
*/
#define PFM_FL_NOTIFY_BLOCK 0x01 /* block task on user level notifications */
#define PFM_FL_SYSTEM_WIDE 0x02 /* create a system wide context */
#define PFM_FL_OVFL_NO_MSG 0x80 /* do not post overflow/end messages for notification */
/*
* event set flags
*/
#define PFM_SETFL_EXCL_IDLE 0x01 /* exclude idle task (syswide only) XXX: DO NOT USE YET */
/*
* PMC flags
*/
#define PFM_REGFL_OVFL_NOTIFY 0x1 /* send notification on overflow */
#define PFM_REGFL_RANDOM 0x2 /* randomize sampling interval */
/*
* PMD/PMC/IBR/DBR return flags (ignored on input)
*
* Those flags are used on output and must be checked in case EAGAIN is returned
* by any of the calls using a pfarg_reg_t or pfarg_dbreg_t structure.
*/
#define PFM_REG_RETFL_NOTAVAIL (1UL<<31) /* set if register is implemented but not available */
#define PFM_REG_RETFL_EINVAL (1UL<<30) /* set if register entry is invalid */
#define PFM_REG_RETFL_MASK (PFM_REG_RETFL_NOTAVAIL|PFM_REG_RETFL_EINVAL)
#define PFM_REG_HAS_ERROR(flag) (((flag) & PFM_REG_RETFL_MASK) != 0)
typedef unsigned char pfm_uuid_t[16]; /* custom sampling buffer identifier type */
/*
* Request structure used to define a context
*/
typedef struct {
pfm_uuid_t ctx_smpl_buf_id; /* which buffer format to use (if needed) */
unsigned long ctx_flags; /* noblock/block */
unsigned short ctx_nextra_sets; /* number of extra event sets (you always get 1) */
unsigned short ctx_reserved1; /* for future use */
int ctx_fd; /* return arg: unique identification for context */
void *ctx_smpl_vaddr; /* return arg: virtual address of sampling buffer, is used */
unsigned long ctx_reserved2[11];/* for future use */
} pfarg_context_t;
/*
* Request structure used to write/read a PMC or PMD
*/
typedef struct {
unsigned int reg_num; /* which register */
unsigned short reg_set; /* event set for this register */
unsigned short reg_reserved1; /* for future use */
unsigned long reg_value; /* initial pmc/pmd value */
unsigned long reg_flags; /* input: pmc/pmd flags, return: reg error */
unsigned long reg_long_reset; /* reset after buffer overflow notification */
unsigned long reg_short_reset; /* reset after counter overflow */
unsigned long reg_reset_pmds[4]; /* which other counters to reset on overflow */
unsigned long reg_random_seed; /* seed value when randomization is used */
unsigned long reg_random_mask; /* bitmask used to limit random value */
unsigned long reg_last_reset_val;/* return: PMD last reset value */
unsigned long reg_smpl_pmds[4]; /* which pmds are accessed when PMC overflows */
unsigned long reg_smpl_eventid; /* opaque sampling event identifier */
unsigned long reg_reserved2[3]; /* for future use */
} pfarg_reg_t;
typedef struct {
unsigned int dbreg_num; /* which debug register */
unsigned short dbreg_set; /* event set for this register */
unsigned short dbreg_reserved1; /* for future use */
unsigned long dbreg_value; /* value for debug register */
unsigned long dbreg_flags; /* return: dbreg error */
unsigned long dbreg_reserved2[1]; /* for future use */
} pfarg_dbreg_t;
typedef struct {
unsigned int ft_version; /* perfmon: major [16-31], minor [0-15] */
unsigned int ft_reserved; /* reserved for future use */
unsigned long reserved[4]; /* for future use */
} pfarg_features_t;
typedef struct {
pid_t load_pid; /* process to load the context into */
unsigned short load_set; /* first event set to load */
unsigned short load_reserved1; /* for future use */
unsigned long load_reserved2[3]; /* for future use */
} pfarg_load_t;
typedef struct {
int msg_type; /* generic message header */
int msg_ctx_fd; /* generic message header */
unsigned long msg_ovfl_pmds[4]; /* which PMDs overflowed */
unsigned short msg_active_set; /* active set at the time of overflow */
unsigned short msg_reserved1; /* for future use */
unsigned int msg_reserved2; /* for future use */
unsigned long msg_tstamp; /* for perf tuning/debug */
} pfm_ovfl_msg_t;
typedef struct {
int msg_type; /* generic message header */
int msg_ctx_fd; /* generic message header */
unsigned long msg_tstamp; /* for perf tuning */
} pfm_end_msg_t;
typedef struct {
int msg_type; /* type of the message */
int msg_ctx_fd; /* unique identifier for the context */
unsigned long msg_tstamp; /* for perf tuning */
} pfm_gen_msg_t;
#define PFM_MSG_OVFL 1 /* an overflow happened */
#define PFM_MSG_END 2 /* task to which context was attached ended */
typedef union {
pfm_ovfl_msg_t pfm_ovfl_msg;
pfm_end_msg_t pfm_end_msg;
pfm_gen_msg_t pfm_gen_msg;
} pfm_msg_t;
/*
* Define the version numbers for both perfmon as a whole and the sampling buffer format.
*/
#define PFM_VERSION_MAJ 2U
#define PFM_VERSION_MIN 0U
#define PFM_VERSION (((PFM_VERSION_MAJ&0xffff)<<16)|(PFM_VERSION_MIN & 0xffff))
#define PFM_VERSION_MAJOR(x) (((x)>>16) & 0xffff)
#define PFM_VERSION_MINOR(x) ((x) & 0xffff)
/*
* miscellaneous architected definitions
*/
#define PMU_FIRST_COUNTER 4 /* first counting monitor (PMC/PMD) */
#define PMU_MAX_PMCS 256 /* maximum architected number of PMC registers */
#define PMU_MAX_PMDS 256 /* maximum architected number of PMD registers */
#endif /* _UAPI_ASM_IA64_PERFMON_H */