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https://github.com/freebsd/freebsd-src
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3a9fd8242b
The current path of the Xen headers at /sys/xen/interface/ is not correct, as those headers are imported verbatim from the Xen sources and shouldn't be modified, as any modifications would be lost when a new version is imported. Changes to the public headers must be first done in Xen upstream so that they can be backported and new imports will already carry them. Import Xen 4.16 headers in sys/contrib/xen/. It's unlikely that we will import different Xen code, so don't place them inside of any subdirectory. If in the future other pieces of Xen code need to be imported the headers will need to move into an include/ subdirectory. Note that this commit does not yet modify the include path to use the newly imported headers. Sponsored by: Citrix Systems R&D
144 lines
4.7 KiB
C
144 lines
4.7 KiB
C
/*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Copyright (c) 2015 Oracle and/or its affiliates. All rights reserved.
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*/
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#ifndef __XEN_PUBLIC_PMU_H__
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#define __XEN_PUBLIC_PMU_H__
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#include "xen.h"
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#if defined(__i386__) || defined(__x86_64__)
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#include "arch-x86/pmu.h"
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#elif defined (__arm__) || defined (__aarch64__)
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#include "arch-arm.h"
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#else
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#error "Unsupported architecture"
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#endif
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#define XENPMU_VER_MAJ 0
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#define XENPMU_VER_MIN 1
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/*
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* ` enum neg_errnoval
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* ` HYPERVISOR_xenpmu_op(enum xenpmu_op cmd, struct xenpmu_params *args);
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*
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* @cmd == XENPMU_* (PMU operation)
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* @args == struct xenpmu_params
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*/
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/* ` enum xenpmu_op { */
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#define XENPMU_mode_get 0 /* Also used for getting PMU version */
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#define XENPMU_mode_set 1
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#define XENPMU_feature_get 2
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#define XENPMU_feature_set 3
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#define XENPMU_init 4
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#define XENPMU_finish 5
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#define XENPMU_lvtpc_set 6
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#define XENPMU_flush 7 /* Write cached MSR values to HW */
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/* ` } */
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/* Parameters structure for HYPERVISOR_xenpmu_op call */
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struct xen_pmu_params {
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/* IN/OUT parameters */
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struct {
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uint32_t maj;
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uint32_t min;
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} version;
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uint64_t val;
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/* IN parameters */
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uint32_t vcpu;
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uint32_t pad;
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};
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typedef struct xen_pmu_params xen_pmu_params_t;
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DEFINE_XEN_GUEST_HANDLE(xen_pmu_params_t);
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/* PMU modes:
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* - XENPMU_MODE_OFF: No PMU virtualization
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* - XENPMU_MODE_SELF: Guests can profile themselves
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* - XENPMU_MODE_HV: Guests can profile themselves, dom0 profiles
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* itself and Xen
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* - XENPMU_MODE_ALL: Only dom0 has access to VPMU and it profiles
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* everyone: itself, the hypervisor and the guests.
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*/
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#define XENPMU_MODE_OFF 0
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#define XENPMU_MODE_SELF (1<<0)
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#define XENPMU_MODE_HV (1<<1)
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#define XENPMU_MODE_ALL (1<<2)
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/*
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* PMU features:
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* - XENPMU_FEATURE_INTEL_BTS: Intel BTS support (ignored on AMD)
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* - XENPMU_FEATURE_IPC_ONLY: Restrict PMCs to the most minimum set possible.
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* Instructions, cycles, and ref cycles. Can be
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* used to calculate instructions-per-cycle (IPC)
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* (ignored on AMD).
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* - XENPMU_FEATURE_ARCH_ONLY: Restrict PMCs to the Intel Pre-Defined
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* Architectural Performance Events exposed by
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* cpuid and listed in the Intel developer's manual
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* (ignored on AMD).
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*/
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#define XENPMU_FEATURE_INTEL_BTS (1<<0)
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#define XENPMU_FEATURE_IPC_ONLY (1<<1)
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#define XENPMU_FEATURE_ARCH_ONLY (1<<2)
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/*
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* Shared PMU data between hypervisor and PV(H) domains.
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*
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* The hypervisor fills out this structure during PMU interrupt and sends an
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* interrupt to appropriate VCPU.
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* Architecture-independent fields of xen_pmu_data are WO for the hypervisor
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* and RO for the guest but some fields in xen_pmu_arch can be writable
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* by both the hypervisor and the guest (see arch-$arch/pmu.h).
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*/
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struct xen_pmu_data {
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/* Interrupted VCPU */
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uint32_t vcpu_id;
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/*
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* Physical processor on which the interrupt occurred. On non-privileged
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* guests set to vcpu_id;
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*/
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uint32_t pcpu_id;
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/*
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* Domain that was interrupted. On non-privileged guests set to DOMID_SELF.
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* On privileged guests can be DOMID_SELF, DOMID_XEN, or, when in
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* XENPMU_MODE_ALL mode, domain ID of another domain.
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*/
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domid_t domain_id;
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uint8_t pad[6];
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/* Architecture-specific information */
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xen_pmu_arch_t pmu;
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};
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#endif /* __XEN_PUBLIC_PMU_H__ */
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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