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0cfab8ddc1
and Core Duo), models 0xF (Core2), model 0x17 (Core2Extreme) and
model 0x1C (Atom).
In these CPUs, the actual numbers, kinds and widths of PMCs present
need to queried at run time. Support for specific "architectural"
events also needs to be queried at run time.
Model 0xE CPUs support programmable PMCs, subsequent CPUs
additionally support "fixed-function" counters.
- Use event names that are close to vendor documentation, taking in
account that:
- events with identical semantics on two or more CPUs in this family
can have differing names in vendor documentation,
- identical vendor event names may map to differing events across
CPUs,
- each type of CPU supports a different subset of measurable
events.
Fixed-function and programmable counters both use the same vendor
names for events. The use of a class name prefix ("iaf-" or
"iap-" respectively) permits these to be distinguished.
- In libpmc, refactor pmc_name_of_event() into a public interface
and an internal helper function, for use by log handling code.
- Minor code tweaks: staticize a global, freshen a few comments.
Tested by: gnn
122 lines
3.2 KiB
C
122 lines
3.2 KiB
C
/*-
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* Copyright (c) 2008 Joseph Koshy
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* All rights reserved.
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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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* $FreeBSD$
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*/
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#ifndef _DEV_HWPMC_CORE_H_
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#define _DEV_HWPMC_CORE_H_ 1
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/*
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* Fixed-function PMCs.
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*/
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struct pmc_md_iaf_op_pmcallocate {
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uint16_t pm_iaf_flags; /* additional flags */
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};
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#define IAF_OS 0x1
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#define IAF_USR 0x2
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#define IAF_ANY 0x4
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#define IAF_PMI 0x8
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/*
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* Programmable PMCs.
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*/
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struct pmc_md_iap_op_pmcallocate {
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uint32_t pm_iap_config;
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};
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#define IAP_EVSEL(C) ((C) & 0xFF)
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#define IAP_UMASK(C) ((C) & 0xFF00)
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#define IAP_USR (1 << 16)
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#define IAP_OS (1 << 17)
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#define IAP_EDGE (1 << 18)
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#define IAP_INT (1 << 20)
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#define IAP_ANY (1 << 21)
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#define IAP_EN (1 << 22)
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#define IAP_INV (1 << 23)
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#define IAP_CMASK(C) (((C) & 0xFF) << 24)
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#ifdef _KERNEL
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/*
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* Fixed-function counters.
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*/
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#define IAF_MASK 0xF
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#define IAF_CTR0 0x309
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#define IAF_CTR1 0x30A
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#define IAF_CTR2 0x30B
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#define IAF_OFFSET 32
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#define IAF_CTRL 0x38D
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/*
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* Programmable counters.
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*/
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#define IAP_PMC0 0x0C1
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#define IAP_PMC1 0x0C2
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#define IAP_EVSEL0 0x186
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#define IAP_EVSEL1 0x187
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/*
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* Simplified programming interface in Intel Performance Architecture
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* v2 and later.
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*/
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#define IA_GLOBAL_STATUS 0x38E
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#define IA_GLOBAL_CTRL 0x38F
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#define IA_GLOBAL_OVF_CTRL 0x390
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#define IA_GLOBAL_STATUS_FLAG_CONDCHG (1ULL << 63)
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#define IA_GLOBAL_STATUS_FLAG_OVFBUF (1ULL << 62)
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struct pmc_md_iaf_pmc {
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uint64_t pm_iaf_ctrl;
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};
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struct pmc_md_iap_pmc {
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uint32_t pm_iap_evsel;
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};
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/*
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* Prototypes.
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*/
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int pmc_core_initialize(struct pmc_mdep *_md, int _maxcpu);
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void pmc_core_finalize(struct pmc_mdep *_md);
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void pmc_core_mark_started(int _cpu, int _pmc);
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int pmc_iaf_initialize(struct pmc_mdep *_md, int _maxcpu, int _npmc, int _width);
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void pmc_iaf_finalize(struct pmc_mdep *_md);
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int pmc_iap_initialize(struct pmc_mdep *_md, int _maxcpu, int _npmc, int _width,
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int _flags);
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void pmc_iap_finalize(struct pmc_mdep *_md);
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#endif /* _KERNEL */
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#endif /* _DEV_HWPMC_CORE_H */
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