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/*
* vpmu.h: PMU virtualization for HVM domain.
*
* Copyright (c) 2007, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*
* Author: Haitao Shan <haitao.shan@intel.com>
*/
#ifndef __ASM_X86_HVM_VPMU_H_
#define __ASM_X86_HVM_VPMU_H_
/*
* Flag bits given as a string on the hypervisor boot parameter 'vpmu'.
* See arch/x86/hvm/vpmu.c.
*/
#define VPMU_BOOT_ENABLED 0x1 /* vpmu generally enabled. */
#define VPMU_BOOT_BTS 0x2 /* Intel BTS feature wanted. */
#define msraddr_to_bitpos(x) (((x)&0xffff) + ((x)>>31)*0x2000)
#define vcpu_vpmu(vcpu) (&((vcpu)->arch.hvm_vcpu.vpmu))
#define vpmu_vcpu(vpmu) (container_of((vpmu), struct vcpu, \
arch.hvm_vcpu.vpmu))
#define vpmu_domain(vpmu) (vpmu_vcpu(vpmu)->domain)
#define MSR_TYPE_COUNTER 0
#define MSR_TYPE_CTRL 1
#define MSR_TYPE_GLOBAL 2
#define MSR_TYPE_ARCH_COUNTER 3
#define MSR_TYPE_ARCH_CTRL 4
/* Arch specific operations shared by all vpmus */
struct arch_vpmu_ops {
int (*do_wrmsr)(unsigned int msr, uint64_t msr_content);
int (*do_rdmsr)(unsigned int msr, uint64_t *msr_content);
int (*do_interrupt)(struct cpu_user_regs *regs);
void (*do_cpuid)(unsigned int input,
unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx);
void (*arch_vpmu_destroy)(struct vcpu *v);
int (*arch_vpmu_save)(struct vcpu *v);
void (*arch_vpmu_load)(struct vcpu *v);
void (*arch_vpmu_dump)(const struct vcpu *);
};
int vmx_vpmu_initialise(struct vcpu *, unsigned int flags);
int svm_vpmu_initialise(struct vcpu *, unsigned int flags);
struct vpmu_struct {
u32 flags;
u32 last_pcpu;
u32 hw_lapic_lvtpc;
void *context;
struct arch_vpmu_ops *arch_vpmu_ops;
};
/* VPMU states */
#define VPMU_CONTEXT_ALLOCATED 0x1
#define VPMU_CONTEXT_LOADED 0x2
#define VPMU_RUNNING 0x4
#define VPMU_CONTEXT_SAVE 0x8 /* Force context save */
#define VPMU_FROZEN 0x10 /* Stop counters while VCPU is not running */
#define VPMU_PASSIVE_DOMAIN_ALLOCATED 0x20
/* VPMU features */
#define VPMU_CPU_HAS_DS 0x100 /* Has Debug Store */
#define VPMU_CPU_HAS_BTS 0x200 /* Has Branch Trace Store */
#define vpmu_set(_vpmu, _x) ((_vpmu)->flags |= (_x))
#define vpmu_reset(_vpmu, _x) ((_vpmu)->flags &= ~(_x))
#define vpmu_is_set(_vpmu, _x) ((_vpmu)->flags & (_x))
#define vpmu_clear(_vpmu) ((_vpmu)->flags = 0)
int vpmu_do_wrmsr(unsigned int msr, uint64_t msr_content);
int vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content);
int vpmu_do_interrupt(struct cpu_user_regs *regs);
void vpmu_do_cpuid(unsigned int input, unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx);
void vpmu_initialise(struct vcpu *v);
void vpmu_destroy(struct vcpu *v);
void vpmu_save(struct vcpu *v);
void vpmu_load(struct vcpu *v);
void vpmu_dump(struct vcpu *v);
extern int acquire_pmu_ownership(int pmu_ownership);
extern void release_pmu_ownership(int pmu_ownership);
#endif /* __ASM_X86_HVM_VPMU_H_*/
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