8e3441ebab
The PMC module is used by perf_events, oprofile and watchdogs. Signed-off-by: Zhigang Lu <zlu@tilera.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
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* Copyright 2014 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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#ifndef _ASM_TILE_PMC_H
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#define _ASM_TILE_PMC_H
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#include <linux/ptrace.h>
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#define TILE_BASE_COUNTERS 2
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/* Bitfields below are derived from SPR PERF_COUNT_CTL*/
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#ifndef __tilegx__
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/* PERF_COUNT_CTL on TILEPro */
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#define TILE_CTL_EXCL_USER (1 << 7) /* exclude user level */
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#define TILE_CTL_EXCL_KERNEL (1 << 8) /* exclude kernel level */
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#define TILE_CTL_EXCL_HV (1 << 9) /* exclude hypervisor level */
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#define TILE_SEL_MASK 0x7f /* 7 bits for event SEL,
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COUNT_0_SEL */
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#define TILE_PLM_MASK 0x780 /* 4 bits priv level msks,
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COUNT_0_MASK*/
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#define TILE_EVENT_MASK (TILE_SEL_MASK | TILE_PLM_MASK)
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#else /* __tilegx__*/
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/* PERF_COUNT_CTL on TILEGx*/
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#define TILE_CTL_EXCL_USER (1 << 10) /* exclude user level */
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#define TILE_CTL_EXCL_KERNEL (1 << 11) /* exclude kernel level */
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#define TILE_CTL_EXCL_HV (1 << 12) /* exclude hypervisor level */
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#define TILE_SEL_MASK 0x3f /* 6 bits for event SEL,
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COUNT_0_SEL*/
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#define TILE_BOX_MASK 0x1c0 /* 3 bits box msks,
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COUNT_0_BOX */
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#define TILE_PLM_MASK 0x3c00 /* 4 bits priv level msks,
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COUNT_0_MASK */
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#define TILE_EVENT_MASK (TILE_SEL_MASK | TILE_BOX_MASK | TILE_PLM_MASK)
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#endif /* __tilegx__*/
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/* Takes register and fault number. Returns error to disable the interrupt. */
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typedef int (*perf_irq_t)(struct pt_regs *, int);
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int userspace_perf_handler(struct pt_regs *regs, int fault);
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perf_irq_t reserve_pmc_hardware(perf_irq_t new_perf_irq);
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void release_pmc_hardware(void);
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unsigned long pmc_get_overflow(void);
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void pmc_ack_overflow(unsigned long status);
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void unmask_pmc_interrupts(void);
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void mask_pmc_interrupts(void);
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#endif /* _ASM_TILE_PMC_H */
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