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 66 typedef unsigned char pfm_uuid_t[16]; /* custom sampling buffer identifier type */ 67 68 /* 69 * Request structure used to define a context 70 */ 71 typedef 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 */ 84 typedef 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; 105 106 typedef 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; 114 115 typedef 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; 120 121 typedef 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; 127 128 typedef 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; 137 138 typedef 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; 143 144 typedef 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 */ 152 153 typedef 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