133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
|
#ifndef __ASM_POWERPC_IMC_PMU_H
|
||
|
|
#define __ASM_POWERPC_IMC_PMU_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* IMC Nest Performance Monitor counter support.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2017 Madhavan Srinivasan, IBM Corporation.
|
||
|
|
* (C) 2017 Anju T Sudhakar, IBM Corporation.
|
||
|
|
* (C) 2017 Hemant K Shaw, IBM Corporation.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the License, or later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/perf_event.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/of.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
#include <asm/opal.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Compatibility macros for IMC devices
|
||
|
|
*/
|
||
|
|
#define IMC_DTB_COMPAT "ibm,opal-in-memory-counters"
|
||
|
|
#define IMC_DTB_UNIT_COMPAT "ibm,imc-counters"
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* LDBAR: Counter address and Enable/Disable macro.
|
||
|
|
* perf/imc-pmu.c has the LDBAR layout information.
|
||
|
|
*/
|
||
|
|
#define THREAD_IMC_LDBAR_MASK 0x0003ffffffffe000ULL
|
||
|
|
#define THREAD_IMC_ENABLE 0x8000000000000000ULL
|
||
|
|
|
||
|
|
/*
|
||
|
|
* For debugfs interface for imc-mode and imc-command
|
||
|
|
*/
|
||
|
|
#define IMC_CNTL_BLK_OFFSET 0x3FC00
|
||
|
|
#define IMC_CNTL_BLK_CMD_OFFSET 8
|
||
|
|
#define IMC_CNTL_BLK_MODE_OFFSET 32
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Structure to hold memory address information for imc units.
|
||
|
|
*/
|
||
|
|
struct imc_mem_info {
|
||
|
|
u64 *vbase;
|
||
|
|
u32 id;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Place holder for nest pmu events and values.
|
||
|
|
*/
|
||
|
|
struct imc_events {
|
||
|
|
u32 value;
|
||
|
|
char *name;
|
||
|
|
char *unit;
|
||
|
|
char *scale;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Event attribute array index */
|
||
|
|
#define IMC_FORMAT_ATTR 0
|
||
|
|
#define IMC_EVENT_ATTR 1
|
||
|
|
#define IMC_CPUMASK_ATTR 2
|
||
|
|
#define IMC_NULL_ATTR 3
|
||
|
|
|
||
|
|
/* PMU Format attribute macros */
|
||
|
|
#define IMC_EVENT_OFFSET_MASK 0xffffffffULL
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Device tree parser code detects IMC pmu support and
|
||
|
|
* registers new IMC pmus. This structure will hold the
|
||
|
|
* pmu functions, events, counter memory information
|
||
|
|
* and attrs for each imc pmu and will be referenced at
|
||
|
|
* the time of pmu registration.
|
||
|
|
*/
|
||
|
|
struct imc_pmu {
|
||
|
|
struct pmu pmu;
|
||
|
|
struct imc_mem_info *mem_info;
|
||
|
|
struct imc_events *events;
|
||
|
|
/*
|
||
|
|
* Attribute groups for the PMU. Slot 0 used for
|
||
|
|
* format attribute, slot 1 used for cpusmask attribute,
|
||
|
|
* slot 2 used for event attribute. Slot 3 keep as
|
||
|
|
* NULL.
|
||
|
|
*/
|
||
|
|
const struct attribute_group *attr_groups[4];
|
||
|
|
u32 counter_mem_size;
|
||
|
|
int domain;
|
||
|
|
/*
|
||
|
|
* flag to notify whether the memory is mmaped
|
||
|
|
* or allocated by kernel.
|
||
|
|
*/
|
||
|
|
bool imc_counter_mmaped;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Structure to hold id, lock and reference count for the imc events which
|
||
|
|
* are inited.
|
||
|
|
*/
|
||
|
|
struct imc_pmu_ref {
|
||
|
|
struct mutex lock;
|
||
|
|
unsigned int id;
|
||
|
|
int refc;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* In-Memory Collection Counters type.
|
||
|
|
* Data comes from Device tree.
|
||
|
|
* Three device type are supported.
|
||
|
|
*/
|
||
|
|
|
||
|
|
enum {
|
||
|
|
IMC_TYPE_THREAD = 0x1,
|
||
|
|
IMC_TYPE_CORE = 0x4,
|
||
|
|
IMC_TYPE_CHIP = 0x10,
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Domains for IMC PMUs
|
||
|
|
*/
|
||
|
|
#define IMC_DOMAIN_NEST 1
|
||
|
|
#define IMC_DOMAIN_CORE 2
|
||
|
|
#define IMC_DOMAIN_THREAD 3
|
||
|
|
|
||
|
|
extern int init_imc_pmu(struct device_node *parent,
|
||
|
|
struct imc_pmu *pmu_ptr, int pmu_id);
|
||
|
|
extern void thread_imc_disable(void);
|
||
|
|
extern int get_max_nest_dev(void);
|
||
|
|
extern void unregister_thread_imc(void);
|
||
|
|
#endif /* __ASM_POWERPC_IMC_PMU_H */
|