230754ccca
BERI stands for Bluespec Extensible RISC Implementation, based on MIPS. BERI has not implemented standard MIPS perfomance monitoring counters, instead it provides statistical counters. BERI statcounters have a several limitations: - They can't be written - They don't support start/stop operation - None of hardware interrupt is provided on a counter overflow. So make it separate to hwpmc_mips module and support process/system counting mode only. Sponsored by: DARPA, AFRL
541 lines
15 KiB
C
541 lines
15 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Ruslan Bukin <br@bsdpad.com>
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory (Department of Computer Science and
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* Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
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* DARPA SSITH research programme.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_hwpmc_hooks.h"
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#include <sys/param.h>
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#include <sys/pmckern.h>
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#include <dev/hwpmc/hwpmc_beri.h>
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#define BERI_NCOUNTERS 56
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#define BERI_PMC_CAPS (PMC_CAP_USER | PMC_CAP_SYSTEM | \
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PMC_CAP_READ | PMC_CAP_WRITE )
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struct beri_event_code_map {
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uint32_t pe_ev; /* enum value */
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uint64_t (*get_func)(void);
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};
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const struct beri_event_code_map beri_event_codes[BERI_NCOUNTERS] = {
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{ PMC_EV_BERI_CYCLE,
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statcounters_get_cycle_count },
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{ PMC_EV_BERI_INST,
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statcounters_get_inst_count },
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{ PMC_EV_BERI_INST_USER,
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statcounters_get_inst_user_count },
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{ PMC_EV_BERI_INST_KERNEL,
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statcounters_get_inst_kernel_count },
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{ PMC_EV_BERI_IMPRECISE_SETBOUNDS,
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statcounters_get_imprecise_setbounds_count },
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{ PMC_EV_BERI_UNREPRESENTABLE_CAPS,
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statcounters_get_unrepresentable_caps_count },
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{ PMC_EV_BERI_ITLB_MISS,
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statcounters_get_itlb_miss_count },
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{ PMC_EV_BERI_DTLB_MISS,
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statcounters_get_dtlb_miss_count },
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{ PMC_EV_BERI_ICACHE_WRITE_HIT,
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statcounters_get_icache_write_hit_count },
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{ PMC_EV_BERI_ICACHE_WRITE_MISS,
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statcounters_get_icache_write_miss_count },
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{ PMC_EV_BERI_ICACHE_READ_HIT,
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statcounters_get_icache_read_hit_count },
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{ PMC_EV_BERI_ICACHE_READ_MISS,
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statcounters_get_icache_read_miss_count },
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{ PMC_EV_BERI_ICACHE_EVICT,
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statcounters_get_icache_evict_count },
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{ PMC_EV_BERI_DCACHE_WRITE_HIT,
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statcounters_get_dcache_write_hit_count },
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{ PMC_EV_BERI_DCACHE_WRITE_MISS,
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statcounters_get_dcache_write_miss_count },
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{ PMC_EV_BERI_DCACHE_READ_HIT,
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statcounters_get_dcache_read_hit_count },
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{ PMC_EV_BERI_DCACHE_READ_MISS,
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statcounters_get_dcache_read_miss_count },
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{ PMC_EV_BERI_DCACHE_EVICT,
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statcounters_get_dcache_evict_count },
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{ PMC_EV_BERI_DCACHE_SET_TAG_WRITE,
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statcounters_get_dcache_set_tag_write_count },
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{ PMC_EV_BERI_DCACHE_SET_TAG_READ,
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statcounters_get_dcache_set_tag_read_count },
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{ PMC_EV_BERI_L2CACHE_WRITE_HIT,
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statcounters_get_l2cache_write_hit_count },
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{ PMC_EV_BERI_L2CACHE_WRITE_MISS,
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statcounters_get_l2cache_write_miss_count },
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{ PMC_EV_BERI_L2CACHE_READ_HIT,
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statcounters_get_l2cache_read_hit_count },
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{ PMC_EV_BERI_L2CACHE_READ_MISS,
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statcounters_get_l2cache_read_miss_count },
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{ PMC_EV_BERI_L2CACHE_EVICT,
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statcounters_get_l2cache_evict_count },
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{ PMC_EV_BERI_L2CACHE_SET_TAG_WRITE,
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statcounters_get_l2cache_set_tag_write_count },
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{ PMC_EV_BERI_L2CACHE_SET_TAG_READ,
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statcounters_get_l2cache_set_tag_read_count },
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{ PMC_EV_BERI_MEM_BYTE_READ,
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statcounters_get_mem_byte_read_count },
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{ PMC_EV_BERI_MEM_BYTE_WRITE,
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statcounters_get_mem_byte_write_count },
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{ PMC_EV_BERI_MEM_HWORD_READ,
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statcounters_get_mem_hword_read_count },
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{ PMC_EV_BERI_MEM_HWORD_WRITE,
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statcounters_get_mem_hword_write_count },
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{ PMC_EV_BERI_MEM_WORD_READ,
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statcounters_get_mem_word_read_count },
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{ PMC_EV_BERI_MEM_WORD_WRITE,
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statcounters_get_mem_word_write_count },
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{ PMC_EV_BERI_MEM_DWORD_READ,
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statcounters_get_mem_dword_read_count },
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{ PMC_EV_BERI_MEM_DWORD_WRITE,
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statcounters_get_mem_dword_write_count },
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{ PMC_EV_BERI_MEM_CAP_READ,
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statcounters_get_mem_cap_read_count },
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{ PMC_EV_BERI_MEM_CAP_WRITE,
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statcounters_get_mem_cap_write_count },
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{ PMC_EV_BERI_MEM_CAP_READ_TAG_SET,
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statcounters_get_mem_cap_read_tag_set_count },
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{ PMC_EV_BERI_MEM_CAP_WRITE_TAG_SET,
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statcounters_get_mem_cap_write_tag_set_count },
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{ PMC_EV_BERI_TAGCACHE_WRITE_HIT,
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statcounters_get_tagcache_write_hit_count },
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{ PMC_EV_BERI_TAGCACHE_WRITE_MISS,
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statcounters_get_tagcache_write_miss_count },
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{ PMC_EV_BERI_TAGCACHE_READ_HIT,
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statcounters_get_tagcache_read_hit_count },
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{ PMC_EV_BERI_TAGCACHE_READ_MISS,
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statcounters_get_tagcache_read_miss_count },
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{ PMC_EV_BERI_TAGCACHE_EVICT,
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statcounters_get_tagcache_evict_count },
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{ PMC_EV_BERI_L2CACHEMASTER_READ_REQ,
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statcounters_get_l2cachemaster_read_req_count },
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{ PMC_EV_BERI_L2CACHEMASTER_WRITE_REQ,
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statcounters_get_l2cachemaster_write_req_count },
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{ PMC_EV_BERI_L2CACHEMASTER_WRITE_REQ_FLIT,
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statcounters_get_l2cachemaster_write_req_flit_count },
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{ PMC_EV_BERI_L2CACHEMASTER_READ_RSP,
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statcounters_get_l2cachemaster_read_rsp_count },
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{ PMC_EV_BERI_L2CACHEMASTER_READ_RSP_FLIT,
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statcounters_get_l2cachemaster_read_rsp_flit_count },
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{ PMC_EV_BERI_L2CACHEMASTER_WRITE_RSP,
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statcounters_get_l2cachemaster_write_rsp_count },
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{ PMC_EV_BERI_TAGCACHEMASTER_READ_REQ,
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statcounters_get_tagcachemaster_read_req_count },
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{ PMC_EV_BERI_TAGCACHEMASTER_WRITE_REQ,
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statcounters_get_tagcachemaster_write_req_count },
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{ PMC_EV_BERI_TAGCACHEMASTER_WRITE_REQ_FLIT,
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statcounters_get_tagcachemaster_write_req_flit_count },
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{ PMC_EV_BERI_TAGCACHEMASTER_READ_RSP,
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statcounters_get_tagcachemaster_read_rsp_count },
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{ PMC_EV_BERI_TAGCACHEMASTER_READ_RSP_FLIT,
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statcounters_get_tagcachemaster_read_rsp_flit_count },
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{ PMC_EV_BERI_TAGCACHEMASTER_WRITE_RSP,
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statcounters_get_tagcachemaster_write_rsp_count },
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};
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struct mips_pmc_spec beri_pmc_spec = {
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.ps_cpuclass = PMC_CLASS_BERI,
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.ps_cputype = PMC_CPU_MIPS_BERI,
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.ps_capabilities = BERI_PMC_CAPS,
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.ps_counter_width = 64
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};
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/*
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* Per-processor information.
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*/
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struct beri_cpu {
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struct pmc_hw *pc_beripmcs;
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uint64_t start_values[BERI_NCOUNTERS];
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uint64_t stop_values[BERI_NCOUNTERS];
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uint64_t saved_values[BERI_NCOUNTERS];
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};
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int beri_npmcs;
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static struct beri_cpu **beri_pcpu;
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static int
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beri_allocate_pmc(int cpu, int ri, struct pmc *pm,
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const struct pmc_op_pmcallocate *a)
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{
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uint32_t config;
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int i;
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KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
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("[beri,%d] illegal CPU value %d", __LINE__, cpu));
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KASSERT(ri >= 0 && ri < beri_npmcs,
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("[beri,%d] illegal row index %d", __LINE__, ri));
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if (a->pm_class != beri_pmc_spec.ps_cpuclass)
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return (EINVAL);
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for (i = 0; i < BERI_NCOUNTERS; i++) {
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if (beri_event_codes[i].pe_ev == a->pm_ev) {
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config = i;
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break;
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}
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}
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if (i == BERI_NCOUNTERS)
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return (EINVAL);
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pm->pm_md.pm_mips_evsel = config;
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PMCDBG2(MDP,ALL,2,"beri-allocate ri=%d -> config=0x%x", ri, config);
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return (0);
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}
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static int
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beri_read_pmc(int cpu, int ri, pmc_value_t *v)
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{
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uint32_t config;
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struct pmc *pm;
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pmc_value_t new;
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pmc_value_t start_val;
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pmc_value_t stop_val;
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pmc_value_t saved_val;
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pmc_value_t result;
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KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
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("[beri,%d] illegal CPU value %d", __LINE__, cpu));
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KASSERT(ri >= 0 && ri < beri_npmcs,
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("[beri,%d] illegal row index %d", __LINE__, ri));
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pm = beri_pcpu[cpu]->pc_beripmcs[ri].phw_pmc;
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config = pm->pm_md.pm_mips_evsel;
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start_val = beri_pcpu[cpu]->start_values[config];
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if (PMC_IS_SYSTEM_MODE(PMC_TO_MODE(pm))) {
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stop_val = beri_event_codes[config].get_func();
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} else
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stop_val = beri_pcpu[cpu]->stop_values[config];
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if (start_val <= stop_val)
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result = stop_val - start_val;
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else {
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if (config == 0) /* CYCLE counter is 48 bit */
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result = 0x00ffffffffffffffUL;
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else
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result = 0xffffffffffffffffUL;
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result -= start_val;
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result += stop_val;
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}
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saved_val = beri_pcpu[cpu]->saved_values[config];
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*v = result + saved_val;
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return (0);
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}
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static int
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beri_write_pmc(int cpu, int ri, pmc_value_t v)
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{
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struct pmc *pm;
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uint32_t config;
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KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
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("[beri,%d] illegal CPU value %d", __LINE__, cpu));
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KASSERT(ri >= 0 && ri < beri_npmcs,
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("[beri,%d] illegal row-index %d", __LINE__, ri));
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pm = beri_pcpu[cpu]->pc_beripmcs[ri].phw_pmc;
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config = pm->pm_md.pm_mips_evsel;
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if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm)))
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v = (1UL << (beri_pmc_spec.ps_counter_width - 1)) - v;
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PMCDBG3(MDP,WRI,1,"beri-write cpu=%d ri=%d v=%jx", cpu, ri, v);
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if (PMC_IS_SYSTEM_MODE(PMC_TO_MODE(pm)))
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beri_pcpu[cpu]->saved_values[config] = 0;
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else
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beri_pcpu[cpu]->saved_values[config] = v;
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return (0);
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}
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static int
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beri_config_pmc(int cpu, int ri, struct pmc *pm)
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{
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struct pmc_hw *phw;
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PMCDBG3(MDP,CFG,1, "cpu=%d ri=%d pm=%p", cpu, ri, pm);
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KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
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("[beri,%d] illegal CPU value %d", __LINE__, cpu));
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KASSERT(ri >= 0 && ri < beri_npmcs,
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("[beri,%d] illegal row-index %d", __LINE__, ri));
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phw = &beri_pcpu[cpu]->pc_beripmcs[ri];
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KASSERT(pm == NULL || phw->phw_pmc == NULL,
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("[beri,%d] pm=%p phw->pm=%p hwpmc not unconfigured",
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__LINE__, pm, phw->phw_pmc));
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phw->phw_pmc = pm;
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return (0);
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}
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static int
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beri_start_pmc(int cpu, int ri)
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{
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uint32_t config;
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struct pmc *pm;
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struct pmc_hw *phw;
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pmc_value_t v;
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phw = &beri_pcpu[cpu]->pc_beripmcs[ri];
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pm = phw->phw_pmc;
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config = pm->pm_md.pm_mips_evsel;
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v = beri_event_codes[config].get_func();
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beri_pcpu[cpu]->start_values[config] = v;
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return (0);
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}
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static int
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beri_stop_pmc(int cpu, int ri)
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{
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uint32_t config;
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struct pmc *pm;
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struct pmc_hw *phw;
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pmc_value_t v;
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phw = &beri_pcpu[cpu]->pc_beripmcs[ri];
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pm = phw->phw_pmc;
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config = pm->pm_md.pm_mips_evsel;
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v = beri_event_codes[config].get_func();
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beri_pcpu[cpu]->stop_values[config] = v;
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return (0);
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}
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static int
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beri_release_pmc(int cpu, int ri, struct pmc *pmc)
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{
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struct pmc_hw *phw;
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KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
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("[beri,%d] illegal CPU value %d", __LINE__, cpu));
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KASSERT(ri >= 0 && ri < beri_npmcs,
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("[beri,%d] illegal row-index %d", __LINE__, ri));
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phw = &beri_pcpu[cpu]->pc_beripmcs[ri];
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KASSERT(phw->phw_pmc == NULL,
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("[beri,%d] PHW pmc %p non-NULL", __LINE__, phw->phw_pmc));
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return (0);
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}
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static int
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beri_describe(int cpu, int ri, struct pmc_info *pi, struct pmc **ppmc)
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{
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struct pmc_hw *phw;
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char beri_name[PMC_NAME_MAX];
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int error;
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KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
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("[beri,%d], illegal CPU %d", __LINE__, cpu));
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KASSERT(ri >= 0 && ri < beri_npmcs,
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("[beri,%d] row-index %d out of range", __LINE__, ri));
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phw = &beri_pcpu[cpu]->pc_beripmcs[ri];
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snprintf(beri_name, sizeof(beri_name), "MIPS-%d", ri);
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if ((error = copystr(beri_name, pi->pm_name, PMC_NAME_MAX,
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NULL)) != 0)
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return error;
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pi->pm_class = beri_pmc_spec.ps_cpuclass;
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if (phw->phw_state & PMC_PHW_FLAG_IS_ENABLED) {
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pi->pm_enabled = TRUE;
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*ppmc = phw->phw_pmc;
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} else {
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pi->pm_enabled = FALSE;
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*ppmc = NULL;
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}
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return (0);
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}
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static int
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beri_get_config(int cpu, int ri, struct pmc **ppm)
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{
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*ppm = beri_pcpu[cpu]->pc_beripmcs[ri].phw_pmc;
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return (0);
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}
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static int
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beri_pmc_switch_in(struct pmc_cpu *pc, struct pmc_process *pp)
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{
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return (0);
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}
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static int
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beri_pmc_switch_out(struct pmc_cpu *pc, struct pmc_process *pp)
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{
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return (0);
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}
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static int
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beri_pcpu_init(struct pmc_mdep *md, int cpu)
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{
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int first_ri, i;
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struct pmc_cpu *pc;
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struct beri_cpu *pac;
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struct pmc_hw *phw;
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KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
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("[beri,%d] wrong cpu number %d", __LINE__, cpu));
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PMCDBG1(MDP,INI,1,"beri-init cpu=%d", cpu);
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beri_pcpu[cpu] = pac = malloc(sizeof(struct beri_cpu), M_PMC,
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M_WAITOK|M_ZERO);
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pac->pc_beripmcs = malloc(sizeof(struct pmc_hw) * beri_npmcs,
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M_PMC, M_WAITOK|M_ZERO);
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pc = pmc_pcpu[cpu];
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first_ri = md->pmd_classdep[PMC_MDEP_CLASS_INDEX_MIPS].pcd_ri;
|
|
KASSERT(pc != NULL, ("[beri,%d] NULL per-cpu pointer", __LINE__));
|
|
|
|
for (i = 0, phw = pac->pc_beripmcs; i < beri_npmcs; i++, phw++) {
|
|
phw->phw_state = PMC_PHW_FLAG_IS_ENABLED |
|
|
PMC_PHW_CPU_TO_STATE(cpu) | PMC_PHW_INDEX_TO_STATE(i);
|
|
phw->phw_pmc = NULL;
|
|
pc->pc_hwpmcs[i + first_ri] = phw;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
beri_pcpu_fini(struct pmc_mdep *md, int cpu)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
struct pmc_mdep *
|
|
pmc_beri_initialize()
|
|
{
|
|
struct pmc_mdep *pmc_mdep;
|
|
struct pmc_classdep *pcd;
|
|
|
|
snprintf(pmc_cpuid, sizeof(pmc_cpuid), "beri");
|
|
|
|
beri_npmcs = 2;
|
|
|
|
PMCDBG1(MDP,INI,1,"beri-init npmcs=%d", beri_npmcs);
|
|
|
|
/*
|
|
* Allocate space for pointers to PMC HW descriptors and for
|
|
* the MDEP structure used by MI code.
|
|
*/
|
|
beri_pcpu = malloc(sizeof(struct beri_cpu *) * pmc_cpu_max(), M_PMC,
|
|
M_WAITOK|M_ZERO);
|
|
|
|
/* Just one class */
|
|
pmc_mdep = pmc_mdep_alloc(1);
|
|
|
|
pmc_mdep->pmd_cputype = beri_pmc_spec.ps_cputype;
|
|
|
|
pcd = &pmc_mdep->pmd_classdep[PMC_MDEP_CLASS_INDEX_MIPS];
|
|
pcd->pcd_caps = beri_pmc_spec.ps_capabilities;
|
|
pcd->pcd_class = beri_pmc_spec.ps_cpuclass;
|
|
pcd->pcd_num = beri_npmcs;
|
|
pcd->pcd_ri = pmc_mdep->pmd_npmc;
|
|
pcd->pcd_width = beri_pmc_spec.ps_counter_width;
|
|
|
|
pcd->pcd_allocate_pmc = beri_allocate_pmc;
|
|
pcd->pcd_config_pmc = beri_config_pmc;
|
|
pcd->pcd_pcpu_fini = beri_pcpu_fini;
|
|
pcd->pcd_pcpu_init = beri_pcpu_init;
|
|
pcd->pcd_describe = beri_describe;
|
|
pcd->pcd_get_config = beri_get_config;
|
|
pcd->pcd_read_pmc = beri_read_pmc;
|
|
pcd->pcd_release_pmc = beri_release_pmc;
|
|
pcd->pcd_start_pmc = beri_start_pmc;
|
|
pcd->pcd_stop_pmc = beri_stop_pmc;
|
|
pcd->pcd_write_pmc = beri_write_pmc;
|
|
|
|
pmc_mdep->pmd_intr = NULL;
|
|
pmc_mdep->pmd_switch_in = beri_pmc_switch_in;
|
|
pmc_mdep->pmd_switch_out = beri_pmc_switch_out;
|
|
|
|
pmc_mdep->pmd_npmc += beri_npmcs;
|
|
|
|
return (pmc_mdep);
|
|
}
|
|
|
|
void
|
|
pmc_beri_finalize(struct pmc_mdep *md)
|
|
{
|
|
|
|
}
|
|
|
|
struct pmc_mdep *
|
|
pmc_md_initialize()
|
|
{
|
|
|
|
return (pmc_beri_initialize());
|
|
}
|
|
|
|
void
|
|
pmc_md_finalize(struct pmc_mdep *md)
|
|
{
|
|
|
|
return (pmc_beri_finalize(md));
|
|
}
|
|
|
|
int
|
|
pmc_save_kernel_callchain(uintptr_t *cc, int nframes,
|
|
struct trapframe *tf)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pmc_save_user_callchain(uintptr_t *cc, int nframes,
|
|
struct trapframe *tf)
|
|
{
|
|
|
|
return (0);
|
|
}
|