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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __XEN_PUBLIC_XENPMU_H__
#define __XEN_PUBLIC_XENPMU_H__
#include "xen.h"
#define XENPMU_VER_MAJ 0
#define XENPMU_VER_MIN 1
/*
* ` enum neg_errnoval
* ` HYPERVISOR_xenpmu_op(enum xenpmu_op cmd, struct xenpmu_params *args);
*
* @cmd == XENPMU_* (PMU operation)
* @args == struct xenpmu_params
*/
/* ` enum xenpmu_op { */
#define XENPMU_mode_get 0 /* Also used for getting PMU version */
#define XENPMU_mode_set 1
#define XENPMU_feature_get 2
#define XENPMU_feature_set 3
#define XENPMU_init 4
#define XENPMU_finish 5
#define XENPMU_lvtpc_set 6
#define XENPMU_flush 7
/* ` } */
/* Parameters structure for HYPERVISOR_xenpmu_op call */
struct xen_pmu_params {
/* IN/OUT parameters */
struct {
uint32_t maj;
uint32_t min;
} version;
uint64_t val;
/* IN parameters */
uint32_t vcpu;
uint32_t pad;
};
/* PMU modes:
* - XENPMU_MODE_OFF: No PMU virtualization
* - XENPMU_MODE_SELF: Guests can profile themselves
* - XENPMU_MODE_HV: Guests can profile themselves, dom0 profiles
* itself and Xen
* - XENPMU_MODE_ALL: Only dom0 has access to VPMU and it profiles
* everyone: itself, the hypervisor and the guests.
*/
#define XENPMU_MODE_OFF 0
#define XENPMU_MODE_SELF (1<<0)
#define XENPMU_MODE_HV (1<<1)
#define XENPMU_MODE_ALL (1<<2)
/*
* PMU features:
* - XENPMU_FEATURE_INTEL_BTS: Intel BTS support (ignored on AMD)
*/
#define XENPMU_FEATURE_INTEL_BTS 1
/*
* Shared PMU data between hypervisor and PV(H) domains.
*
* The hypervisor fills out this structure during PMU interrupt and sends an
* interrupt to appropriate VCPU.
* Architecture-independent fields of xen_pmu_data are WO for the hypervisor
* and RO for the guest but some fields in xen_pmu_arch can be writable
* by both the hypervisor and the guest (see arch-$arch/pmu.h).
*/
struct xen_pmu_data {
/* Interrupted VCPU */
uint32_t vcpu_id;
/*
* Physical processor on which the interrupt occurred. On non-privileged
* guests set to vcpu_id;
*/
uint32_t pcpu_id;
/*
* Domain that was interrupted. On non-privileged guests set to
* DOMID_SELF.
* On privileged guests can be DOMID_SELF, DOMID_XEN, or, when in
* XENPMU_MODE_ALL mode, domain ID of another domain.
*/
domid_t domain_id;
uint8_t pad[6];
/* Architecture-specific information */
struct xen_pmu_arch pmu;
};
#endif /* __XEN_PUBLIC_XENPMU_H__ */
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