1/* 2 * Copyright 2014 Tilera Corporation. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation, version 2. 7 * 8 * This program is distributed in the hope that it will be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 11 * NON INFRINGEMENT. See the GNU General Public License for 12 * more details. 13 */ 14 15#ifndef _ASM_TILE_PMC_H 16#define _ASM_TILE_PMC_H 17 18#include <linux/ptrace.h> 19 20#define TILE_BASE_COUNTERS 2 21 22/* Bitfields below are derived from SPR PERF_COUNT_CTL*/ 23#ifndef __tilegx__ 24/* PERF_COUNT_CTL on TILEPro */ 25#define TILE_CTL_EXCL_USER (1 << 7) /* exclude user level */ 26#define TILE_CTL_EXCL_KERNEL (1 << 8) /* exclude kernel level */ 27#define TILE_CTL_EXCL_HV (1 << 9) /* exclude hypervisor level */ 28 29#define TILE_SEL_MASK 0x7f /* 7 bits for event SEL, 30 COUNT_0_SEL */ 31#define TILE_PLM_MASK 0x780 /* 4 bits priv level msks, 32 COUNT_0_MASK*/ 33#define TILE_EVENT_MASK (TILE_SEL_MASK | TILE_PLM_MASK) 34 35#else /* __tilegx__*/ 36/* PERF_COUNT_CTL on TILEGx*/ 37#define TILE_CTL_EXCL_USER (1 << 10) /* exclude user level */ 38#define TILE_CTL_EXCL_KERNEL (1 << 11) /* exclude kernel level */ 39#define TILE_CTL_EXCL_HV (1 << 12) /* exclude hypervisor level */ 40 41#define TILE_SEL_MASK 0x3f /* 6 bits for event SEL, 42 COUNT_0_SEL*/ 43#define TILE_BOX_MASK 0x1c0 /* 3 bits box msks, 44 COUNT_0_BOX */ 45#define TILE_PLM_MASK 0x3c00 /* 4 bits priv level msks, 46 COUNT_0_MASK */ 47#define TILE_EVENT_MASK (TILE_SEL_MASK | TILE_BOX_MASK | TILE_PLM_MASK) 48#endif /* __tilegx__*/ 49 50/* Takes register and fault number. Returns error to disable the interrupt. */ 51typedef int (*perf_irq_t)(struct pt_regs *, int); 52 53int userspace_perf_handler(struct pt_regs *regs, int fault); 54 55perf_irq_t reserve_pmc_hardware(perf_irq_t new_perf_irq); 56void release_pmc_hardware(void); 57 58unsigned long pmc_get_overflow(void); 59void pmc_ack_overflow(unsigned long status); 60 61void unmask_pmc_interrupts(void); 62void mask_pmc_interrupts(void); 63 64#endif /* _ASM_TILE_PMC_H */ 65