/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2001-2003 Hewlett-Packard Co
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* Stephane Eranian <eranian@hpl.hp.com>
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*/
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#ifndef _ASM_IA64_PERFMON_H
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#define _ASM_IA64_PERFMON_H
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#include <uapi/asm/perfmon.h>
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extern long perfmonctl(int fd, int cmd, void *arg, int narg);
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typedef struct {
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void (*handler)(int irq, void *arg, struct pt_regs *regs);
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} pfm_intr_handler_desc_t;
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extern void pfm_save_regs (struct task_struct *);
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extern void pfm_load_regs (struct task_struct *);
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extern void pfm_exit_thread(struct task_struct *);
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extern int pfm_use_debug_registers(struct task_struct *);
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extern int pfm_release_debug_registers(struct task_struct *);
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extern void pfm_syst_wide_update_task(struct task_struct *, unsigned long info, int is_ctxswin);
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extern void pfm_inherit(struct task_struct *task, struct pt_regs *regs);
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extern void pfm_init_percpu(void);
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extern void pfm_handle_work(void);
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extern int pfm_install_alt_pmu_interrupt(pfm_intr_handler_desc_t *h);
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extern int pfm_remove_alt_pmu_interrupt(pfm_intr_handler_desc_t *h);
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/*
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* Reset PMD register flags
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*/
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#define PFM_PMD_SHORT_RESET 0
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#define PFM_PMD_LONG_RESET 1
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typedef union {
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unsigned int val;
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struct {
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unsigned int notify_user:1; /* notify user program of overflow */
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unsigned int reset_ovfl_pmds:1; /* reset overflowed PMDs */
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unsigned int block_task:1; /* block monitored task on kernel exit */
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unsigned int mask_monitoring:1; /* mask monitors via PMCx.plm */
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unsigned int reserved:28; /* for future use */
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} bits;
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} pfm_ovfl_ctrl_t;
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typedef struct {
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unsigned char ovfl_pmd; /* index of overflowed PMD */
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unsigned char ovfl_notify; /* =1 if monitor requested overflow notification */
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unsigned short active_set; /* event set active at the time of the overflow */
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pfm_ovfl_ctrl_t ovfl_ctrl; /* return: perfmon controls to set by handler */
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unsigned long pmd_last_reset; /* last reset value of of the PMD */
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unsigned long smpl_pmds[4]; /* bitmask of other PMD of interest on overflow */
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unsigned long smpl_pmds_values[PMU_MAX_PMDS]; /* values for the other PMDs of interest */
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unsigned long pmd_value; /* current 64-bit value of the PMD */
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unsigned long pmd_eventid; /* eventid associated with PMD */
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} pfm_ovfl_arg_t;
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typedef struct {
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char *fmt_name;
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pfm_uuid_t fmt_uuid;
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size_t fmt_arg_size;
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unsigned long fmt_flags;
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int (*fmt_validate)(struct task_struct *task, unsigned int flags, int cpu, void *arg);
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int (*fmt_getsize)(struct task_struct *task, unsigned int flags, int cpu, void *arg, unsigned long *size);
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int (*fmt_init)(struct task_struct *task, void *buf, unsigned int flags, int cpu, void *arg);
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int (*fmt_handler)(struct task_struct *task, void *buf, pfm_ovfl_arg_t *arg, struct pt_regs *regs, unsigned long stamp);
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int (*fmt_restart)(struct task_struct *task, pfm_ovfl_ctrl_t *ctrl, void *buf, struct pt_regs *regs);
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int (*fmt_restart_active)(struct task_struct *task, pfm_ovfl_ctrl_t *ctrl, void *buf, struct pt_regs *regs);
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int (*fmt_exit)(struct task_struct *task, void *buf, struct pt_regs *regs);
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struct list_head fmt_list;
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} pfm_buffer_fmt_t;
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extern int pfm_register_buffer_fmt(pfm_buffer_fmt_t *fmt);
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extern int pfm_unregister_buffer_fmt(pfm_uuid_t uuid);
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/*
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* perfmon interface exported to modules
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*/
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extern int pfm_mod_read_pmds(struct task_struct *, void *req, unsigned int nreq, struct pt_regs *regs);
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extern int pfm_mod_write_pmcs(struct task_struct *, void *req, unsigned int nreq, struct pt_regs *regs);
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extern int pfm_mod_write_ibrs(struct task_struct *task, void *req, unsigned int nreq, struct pt_regs *regs);
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extern int pfm_mod_write_dbrs(struct task_struct *task, void *req, unsigned int nreq, struct pt_regs *regs);
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/*
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* describe the content of the local_cpu_date->pfm_syst_info field
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*/
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#define PFM_CPUINFO_SYST_WIDE 0x1 /* if set a system wide session exists */
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#define PFM_CPUINFO_DCR_PP 0x2 /* if set the system wide session has started */
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#define PFM_CPUINFO_EXCL_IDLE 0x4 /* the system wide session excludes the idle task */
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/*
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* sysctl control structure. visible to sampling formats
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*/
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typedef struct {
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int debug; /* turn on/off debugging via syslog */
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int debug_ovfl; /* turn on/off debug printk in overflow handler */
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int fastctxsw; /* turn on/off fast (unsecure) ctxsw */
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int expert_mode; /* turn on/off value checking */
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} pfm_sysctl_t;
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extern pfm_sysctl_t pfm_sysctl;
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#endif /* _ASM_IA64_PERFMON_H */
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