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/*
* Copyright 2014 Tilera Corporation. All Rights Reserved.
*
* 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, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
#ifndef _ASM_TILE_PMC_H
#define _ASM_TILE_PMC_H
#include <linux/ptrace.h>
#define TILE_BASE_COUNTERS 2
/* Bitfields below are derived from SPR PERF_COUNT_CTL*/
#ifndef __tilegx__
/* PERF_COUNT_CTL on TILEPro */
#define TILE_CTL_EXCL_USER (1 << 7) /* exclude user level */
#define TILE_CTL_EXCL_KERNEL (1 << 8) /* exclude kernel level */
#define TILE_CTL_EXCL_HV (1 << 9) /* exclude hypervisor level */
#define TILE_SEL_MASK 0x7f /* 7 bits for event SEL,
COUNT_0_SEL */
#define TILE_PLM_MASK 0x780 /* 4 bits priv level msks,
COUNT_0_MASK*/
#define TILE_EVENT_MASK (TILE_SEL_MASK | TILE_PLM_MASK)
#else /* __tilegx__*/
/* PERF_COUNT_CTL on TILEGx*/
#define TILE_CTL_EXCL_USER (1 << 10) /* exclude user level */
#define TILE_CTL_EXCL_KERNEL (1 << 11) /* exclude kernel level */
#define TILE_CTL_EXCL_HV (1 << 12) /* exclude hypervisor level */
#define TILE_SEL_MASK 0x3f /* 6 bits for event SEL,
COUNT_0_SEL*/
#define TILE_BOX_MASK 0x1c0 /* 3 bits box msks,
COUNT_0_BOX */
#define TILE_PLM_MASK 0x3c00 /* 4 bits priv level msks,
COUNT_0_MASK */
#define TILE_EVENT_MASK (TILE_SEL_MASK | TILE_BOX_MASK | TILE_PLM_MASK)
#endif /* __tilegx__*/
/* Takes register and fault number. Returns error to disable the interrupt. */
typedef int (*perf_irq_t)(struct pt_regs *, int);
int userspace_perf_handler(struct pt_regs *regs, int fault);
perf_irq_t reserve_pmc_hardware(perf_irq_t new_perf_irq);
void release_pmc_hardware(void);
unsigned long pmc_get_overflow(void);
void pmc_ack_overflow(unsigned long status);
void unmask_pmc_interrupts(void);
void mask_pmc_interrupts(void);
#endif /* _ASM_TILE_PMC_H */
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