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- /*
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Copyright (c) 2015 Oracle and/or its affiliates. All rights reserved.
- */
- #ifndef __XEN_PUBLIC_PMU_H__
- #define __XEN_PUBLIC_PMU_H__
- #include "xen.h"
- #if defined(__i386__) || defined(__x86_64__)
- #include "arch-x86/pmu.h"
- #elif defined (__arm__) || defined (__aarch64__)
- #include "arch-arm.h"
- #else
- #error "Unsupported architecture"
- #endif
- #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 /* Write cached MSR values to HW */
- /* ` } */
- /* 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;
- };
- typedef struct xen_pmu_params xen_pmu_params_t;
- DEFINE_XEN_GUEST_HANDLE(xen_pmu_params_t);
- /* 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)
- * - XENPMU_FEATURE_IPC_ONLY: Restrict PMCs to the most minimum set possible.
- * Instructions, cycles, and ref cycles. Can be
- * used to calculate instructions-per-cycle (IPC)
- * (ignored on AMD).
- * - XENPMU_FEATURE_ARCH_ONLY: Restrict PMCs to the Intel Pre-Defined
- * Architectural Performance Events exposed by
- * cpuid and listed in the Intel developer's manual
- * (ignored on AMD).
- */
- #define XENPMU_FEATURE_INTEL_BTS (1<<0)
- #define XENPMU_FEATURE_IPC_ONLY (1<<1)
- #define XENPMU_FEATURE_ARCH_ONLY (1<<2)
- /*
- * 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_PMU_H__ */
- /*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 4
- * tab-width: 4
- * indent-tabs-mode: nil
- * End:
- */
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