/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __XEN_PUBLIC_XENPMU_H__
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#define __XEN_PUBLIC_XENPMU_H__
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#include "xen.h"
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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
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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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/* 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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*/
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#define XENPMU_FEATURE_INTEL_BTS 1
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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
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* 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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struct xen_pmu_arch pmu;
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};
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#endif /* __XEN_PUBLIC_XENPMU_H__ */
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