1/* 2 * Copyright (C) 2001-2003 Hewlett-Packard Co 3 * Stephane Eranian <eranian@hpl.hp.com> 4 */ 5 6#ifndef _UAPI_ASM_IA64_PERFMON_H 7#define _UAPI_ASM_IA64_PERFMON_H 8 9/* 10 * perfmon commands supported on all CPU models 11 */ 12#define PFM_WRITE_PMCS 0x01 13#define PFM_WRITE_PMDS 0x02 14#define PFM_READ_PMDS 0x03 15#define PFM_STOP 0x04 16#define PFM_START 0x05 17#define PFM_ENABLE 0x06 /* obsolete */ 18#define PFM_DISABLE 0x07 /* obsolete */ 19#define PFM_CREATE_CONTEXT 0x08 20#define PFM_DESTROY_CONTEXT 0x09 /* obsolete use close() */ 21#define PFM_RESTART 0x0a 22#define PFM_PROTECT_CONTEXT 0x0b /* obsolete */ 23#define PFM_GET_FEATURES 0x0c 24#define PFM_DEBUG 0x0d 25#define PFM_UNPROTECT_CONTEXT 0x0e /* obsolete */ 26#define PFM_GET_PMC_RESET_VAL 0x0f 27#define PFM_LOAD_CONTEXT 0x10 28#define PFM_UNLOAD_CONTEXT 0x11 29 30/* 31 * PMU model specific commands (may not be supported on all PMU models) 32 */ 33#define PFM_WRITE_IBRS 0x20 34#define PFM_WRITE_DBRS 0x21 35 36/* 37 * context flags 38 */ 39#define PFM_FL_NOTIFY_BLOCK 0x01 /* block task on user level notifications */ 40#define PFM_FL_SYSTEM_WIDE 0x02 /* create a system wide context */ 41#define PFM_FL_OVFL_NO_MSG 0x80 /* do not post overflow/end messages for notification */ 42 43/* 44 * event set flags 45 */ 46#define PFM_SETFL_EXCL_IDLE 0x01 /* exclude idle task (syswide only) XXX: DO NOT USE YET */ 47 48/* 49 * PMC flags 50 */ 51#define PFM_REGFL_OVFL_NOTIFY 0x1 /* send notification on overflow */ 52#define PFM_REGFL_RANDOM 0x2 /* randomize sampling interval */ 53 54/* 55 * PMD/PMC/IBR/DBR return flags (ignored on input) 56 * 57 * Those flags are used on output and must be checked in case EAGAIN is returned 58 * by any of the calls using a pfarg_reg_t or pfarg_dbreg_t structure. 59 */ 60#define PFM_REG_RETFL_NOTAVAIL (1UL<<31) /* set if register is implemented but not available */ 61#define PFM_REG_RETFL_EINVAL (1UL<<30) /* set if register entry is invalid */ 62#define PFM_REG_RETFL_MASK (PFM_REG_RETFL_NOTAVAIL|PFM_REG_RETFL_EINVAL) 63 64#define PFM_REG_HAS_ERROR(flag) (((flag) & PFM_REG_RETFL_MASK) != 0) 65 66typedef unsigned char pfm_uuid_t[16]; /* custom sampling buffer identifier type */ 67 68/* 69 * Request structure used to define a context 70 */ 71typedef struct { 72 pfm_uuid_t ctx_smpl_buf_id; /* which buffer format to use (if needed) */ 73 unsigned long ctx_flags; /* noblock/block */ 74 unsigned short ctx_nextra_sets; /* number of extra event sets (you always get 1) */ 75 unsigned short ctx_reserved1; /* for future use */ 76 int ctx_fd; /* return arg: unique identification for context */ 77 void *ctx_smpl_vaddr; /* return arg: virtual address of sampling buffer, is used */ 78 unsigned long ctx_reserved2[11];/* for future use */ 79} pfarg_context_t; 80 81/* 82 * Request structure used to write/read a PMC or PMD 83 */ 84typedef struct { 85 unsigned int reg_num; /* which register */ 86 unsigned short reg_set; /* event set for this register */ 87 unsigned short reg_reserved1; /* for future use */ 88 89 unsigned long reg_value; /* initial pmc/pmd value */ 90 unsigned long reg_flags; /* input: pmc/pmd flags, return: reg error */ 91 92 unsigned long reg_long_reset; /* reset after buffer overflow notification */ 93 unsigned long reg_short_reset; /* reset after counter overflow */ 94 95 unsigned long reg_reset_pmds[4]; /* which other counters to reset on overflow */ 96 unsigned long reg_random_seed; /* seed value when randomization is used */ 97 unsigned long reg_random_mask; /* bitmask used to limit random value */ 98 unsigned long reg_last_reset_val;/* return: PMD last reset value */ 99 100 unsigned long reg_smpl_pmds[4]; /* which pmds are accessed when PMC overflows */ 101 unsigned long reg_smpl_eventid; /* opaque sampling event identifier */ 102 103 unsigned long reg_reserved2[3]; /* for future use */ 104} pfarg_reg_t; 105 106typedef struct { 107 unsigned int dbreg_num; /* which debug register */ 108 unsigned short dbreg_set; /* event set for this register */ 109 unsigned short dbreg_reserved1; /* for future use */ 110 unsigned long dbreg_value; /* value for debug register */ 111 unsigned long dbreg_flags; /* return: dbreg error */ 112 unsigned long dbreg_reserved2[1]; /* for future use */ 113} pfarg_dbreg_t; 114 115typedef struct { 116 unsigned int ft_version; /* perfmon: major [16-31], minor [0-15] */ 117 unsigned int ft_reserved; /* reserved for future use */ 118 unsigned long reserved[4]; /* for future use */ 119} pfarg_features_t; 120 121typedef struct { 122 pid_t load_pid; /* process to load the context into */ 123 unsigned short load_set; /* first event set to load */ 124 unsigned short load_reserved1; /* for future use */ 125 unsigned long load_reserved2[3]; /* for future use */ 126} pfarg_load_t; 127 128typedef struct { 129 int msg_type; /* generic message header */ 130 int msg_ctx_fd; /* generic message header */ 131 unsigned long msg_ovfl_pmds[4]; /* which PMDs overflowed */ 132 unsigned short msg_active_set; /* active set at the time of overflow */ 133 unsigned short msg_reserved1; /* for future use */ 134 unsigned int msg_reserved2; /* for future use */ 135 unsigned long msg_tstamp; /* for perf tuning/debug */ 136} pfm_ovfl_msg_t; 137 138typedef struct { 139 int msg_type; /* generic message header */ 140 int msg_ctx_fd; /* generic message header */ 141 unsigned long msg_tstamp; /* for perf tuning */ 142} pfm_end_msg_t; 143 144typedef struct { 145 int msg_type; /* type of the message */ 146 int msg_ctx_fd; /* unique identifier for the context */ 147 unsigned long msg_tstamp; /* for perf tuning */ 148} pfm_gen_msg_t; 149 150#define PFM_MSG_OVFL 1 /* an overflow happened */ 151#define PFM_MSG_END 2 /* task to which context was attached ended */ 152 153typedef union { 154 pfm_ovfl_msg_t pfm_ovfl_msg; 155 pfm_end_msg_t pfm_end_msg; 156 pfm_gen_msg_t pfm_gen_msg; 157} pfm_msg_t; 158 159/* 160 * Define the version numbers for both perfmon as a whole and the sampling buffer format. 161 */ 162#define PFM_VERSION_MAJ 2U 163#define PFM_VERSION_MIN 0U 164#define PFM_VERSION (((PFM_VERSION_MAJ&0xffff)<<16)|(PFM_VERSION_MIN & 0xffff)) 165#define PFM_VERSION_MAJOR(x) (((x)>>16) & 0xffff) 166#define PFM_VERSION_MINOR(x) ((x) & 0xffff) 167 168 169/* 170 * miscellaneous architected definitions 171 */ 172#define PMU_FIRST_COUNTER 4 /* first counting monitor (PMC/PMD) */ 173#define PMU_MAX_PMCS 256 /* maximum architected number of PMC registers */ 174#define PMU_MAX_PMDS 256 /* maximum architected number of PMD registers */ 175 176 177#endif /* _UAPI_ASM_IA64_PERFMON_H */ 178