ref: b0377e84cf31c48afed765c433abe7eebb4135a5
dir: /sys/src/9/xen/xen-public/arch-x86/hvm/save.h/
/*
* Structure definitions for HVM state that is held by Xen and must
* be saved along with the domain's memory and device-model state.
*
* Copyright (c) 2007 XenSource Ltd.
*
* 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.
*/
#ifndef __XEN_PUBLIC_HVM_SAVE_X86_H__
#define __XEN_PUBLIC_HVM_SAVE_X86_H__
/*
* Save/restore header: general info about the save file.
*/
#define HVM_FILE_MAGIC 0x54381286
#define HVM_FILE_VERSION 0x00000001
struct hvm_save_header {
uint32_t magic; /* Must be HVM_FILE_MAGIC */
uint32_t version; /* File format version */
uint64_t changeset; /* Version of Xen that saved this file */
uint32_t cpuid; /* CPUID[0x01][%eax] on the saving machine */
uint32_t gtsc_khz; /* Guest's TSC frequency in kHz */
};
DECLARE_HVM_SAVE_TYPE(HEADER, 1, struct hvm_save_header);
/*
* Processor
*
* Compat: Pre-3.4 didn't have msr_tsc_aux
*/
struct hvm_hw_cpu {
uint8_t fpu_regs[512];
uint64_t rax;
uint64_t rbx;
uint64_t rcx;
uint64_t rdx;
uint64_t rbp;
uint64_t rsi;
uint64_t rdi;
uint64_t rsp;
uint64_t r8;
uint64_t r9;
uint64_t r10;
uint64_t r11;
uint64_t r12;
uint64_t r13;
uint64_t r14;
uint64_t r15;
uint64_t rip;
uint64_t rflags;
uint64_t cr0;
uint64_t cr2;
uint64_t cr3;
uint64_t cr4;
uint64_t dr0;
uint64_t dr1;
uint64_t dr2;
uint64_t dr3;
uint64_t dr6;
uint64_t dr7;
uint32_t cs_sel;
uint32_t ds_sel;
uint32_t es_sel;
uint32_t fs_sel;
uint32_t gs_sel;
uint32_t ss_sel;
uint32_t tr_sel;
uint32_t ldtr_sel;
uint32_t cs_limit;
uint32_t ds_limit;
uint32_t es_limit;
uint32_t fs_limit;
uint32_t gs_limit;
uint32_t ss_limit;
uint32_t tr_limit;
uint32_t ldtr_limit;
uint32_t idtr_limit;
uint32_t gdtr_limit;
uint64_t cs_base;
uint64_t ds_base;
uint64_t es_base;
uint64_t fs_base;
uint64_t gs_base;
uint64_t ss_base;
uint64_t tr_base;
uint64_t ldtr_base;
uint64_t idtr_base;
uint64_t gdtr_base;
uint32_t cs_arbytes;
uint32_t ds_arbytes;
uint32_t es_arbytes;
uint32_t fs_arbytes;
uint32_t gs_arbytes;
uint32_t ss_arbytes;
uint32_t tr_arbytes;
uint32_t ldtr_arbytes;
uint64_t sysenter_cs;
uint64_t sysenter_esp;
uint64_t sysenter_eip;
/* msr for em64t */
uint64_t shadow_gs;
/* msr content saved/restored. */
uint64_t msr_flags;
uint64_t msr_lstar;
uint64_t msr_star;
uint64_t msr_cstar;
uint64_t msr_syscall_mask;
uint64_t msr_efer;
uint64_t msr_tsc_aux;
/* guest's idea of what rdtsc() would return */
uint64_t tsc;
/* pending event, if any */
union {
uint32_t pending_event;
struct {
uint8_t pending_vector:8;
uint8_t pending_type:3;
uint8_t pending_error_valid:1;
uint32_t pending_reserved:19;
uint8_t pending_valid:1;
};
};
/* error code for pending event */
uint32_t error_code;
};
struct hvm_hw_cpu_compat {
uint8_t fpu_regs[512];
uint64_t rax;
uint64_t rbx;
uint64_t rcx;
uint64_t rdx;
uint64_t rbp;
uint64_t rsi;
uint64_t rdi;
uint64_t rsp;
uint64_t r8;
uint64_t r9;
uint64_t r10;
uint64_t r11;
uint64_t r12;
uint64_t r13;
uint64_t r14;
uint64_t r15;
uint64_t rip;
uint64_t rflags;
uint64_t cr0;
uint64_t cr2;
uint64_t cr3;
uint64_t cr4;
uint64_t dr0;
uint64_t dr1;
uint64_t dr2;
uint64_t dr3;
uint64_t dr6;
uint64_t dr7;
uint32_t cs_sel;
uint32_t ds_sel;
uint32_t es_sel;
uint32_t fs_sel;
uint32_t gs_sel;
uint32_t ss_sel;
uint32_t tr_sel;
uint32_t ldtr_sel;
uint32_t cs_limit;
uint32_t ds_limit;
uint32_t es_limit;
uint32_t fs_limit;
uint32_t gs_limit;
uint32_t ss_limit;
uint32_t tr_limit;
uint32_t ldtr_limit;
uint32_t idtr_limit;
uint32_t gdtr_limit;
uint64_t cs_base;
uint64_t ds_base;
uint64_t es_base;
uint64_t fs_base;
uint64_t gs_base;
uint64_t ss_base;
uint64_t tr_base;
uint64_t ldtr_base;
uint64_t idtr_base;
uint64_t gdtr_base;
uint32_t cs_arbytes;
uint32_t ds_arbytes;
uint32_t es_arbytes;
uint32_t fs_arbytes;
uint32_t gs_arbytes;
uint32_t ss_arbytes;
uint32_t tr_arbytes;
uint32_t ldtr_arbytes;
uint64_t sysenter_cs;
uint64_t sysenter_esp;
uint64_t sysenter_eip;
/* msr for em64t */
uint64_t shadow_gs;
/* msr content saved/restored. */
uint64_t msr_flags;
uint64_t msr_lstar;
uint64_t msr_star;
uint64_t msr_cstar;
uint64_t msr_syscall_mask;
uint64_t msr_efer;
/*uint64_t msr_tsc_aux; COMPAT */
/* guest's idea of what rdtsc() would return */
uint64_t tsc;
/* pending event, if any */
union {
uint32_t pending_event;
struct {
uint8_t pending_vector:8;
uint8_t pending_type:3;
uint8_t pending_error_valid:1;
uint32_t pending_reserved:19;
uint8_t pending_valid:1;
};
};
/* error code for pending event */
uint32_t error_code;
};
static inline int _hvm_hw_fix_cpu(void *h) {
union hvm_hw_cpu_union {
struct hvm_hw_cpu nat;
struct hvm_hw_cpu_compat cmp;
} *ucpu = (union hvm_hw_cpu_union *)h;
/* If we copy from the end backwards, we should
* be able to do the modification in-place */
ucpu->nat.error_code = ucpu->cmp.error_code;
ucpu->nat.pending_event = ucpu->cmp.pending_event;
ucpu->nat.tsc = ucpu->cmp.tsc;
ucpu->nat.msr_tsc_aux = 0;
return 0;
}
DECLARE_HVM_SAVE_TYPE_COMPAT(CPU, 2, struct hvm_hw_cpu, \
struct hvm_hw_cpu_compat, _hvm_hw_fix_cpu);
/*
* PIC
*/
struct hvm_hw_vpic {
/* IR line bitmasks. */
uint8_t irr;
uint8_t imr;
uint8_t isr;
/* Line IRx maps to IRQ irq_base+x */
uint8_t irq_base;
/*
* Where are we in ICW2-4 initialisation (0 means no init in progress)?
* Bits 0-1 (=x): Next write at A=1 sets ICW(x+1).
* Bit 2: ICW1.IC4 (1 == ICW4 included in init sequence)
* Bit 3: ICW1.SNGL (0 == ICW3 included in init sequence)
*/
uint8_t init_state:4;
/* IR line with highest priority. */
uint8_t priority_add:4;
/* Reads from A=0 obtain ISR or IRR? */
uint8_t readsel_isr:1;
/* Reads perform a polling read? */
uint8_t poll:1;
/* Automatically clear IRQs from the ISR during INTA? */
uint8_t auto_eoi:1;
/* Automatically rotate IRQ priorities during AEOI? */
uint8_t rotate_on_auto_eoi:1;
/* Exclude slave inputs when considering in-service IRQs? */
uint8_t special_fully_nested_mode:1;
/* Special mask mode excludes masked IRs from AEOI and priority checks. */
uint8_t special_mask_mode:1;
/* Is this a master PIC or slave PIC? (NB. This is not programmable.) */
uint8_t is_master:1;
/* Edge/trigger selection. */
uint8_t elcr;
/* Virtual INT output. */
uint8_t int_output;
};
DECLARE_HVM_SAVE_TYPE(PIC, 3, struct hvm_hw_vpic);
/*
* IO-APIC
*/
#define VIOAPIC_NUM_PINS 48 /* 16 ISA IRQs, 32 non-legacy PCI IRQS. */
struct hvm_hw_vioapic {
uint64_t base_address;
uint32_t ioregsel;
uint32_t id;
union vioapic_redir_entry
{
uint64_t bits;
struct {
uint8_t vector;
uint8_t delivery_mode:3;
uint8_t dest_mode:1;
uint8_t delivery_status:1;
uint8_t polarity:1;
uint8_t remote_irr:1;
uint8_t trig_mode:1;
uint8_t mask:1;
uint8_t reserve:7;
uint8_t reserved[4];
uint8_t dest_id;
} fields;
} redirtbl[VIOAPIC_NUM_PINS];
};
DECLARE_HVM_SAVE_TYPE(IOAPIC, 4, struct hvm_hw_vioapic);
/*
* LAPIC
*/
struct hvm_hw_lapic {
uint64_t apic_base_msr;
uint32_t disabled; /* VLAPIC_xx_DISABLED */
uint32_t timer_divisor;
uint64_t tdt_msr;
};
DECLARE_HVM_SAVE_TYPE(LAPIC, 5, struct hvm_hw_lapic);
struct hvm_hw_lapic_regs {
uint8_t data[1024];
};
DECLARE_HVM_SAVE_TYPE(LAPIC_REGS, 6, struct hvm_hw_lapic_regs);
/*
* IRQs
*/
struct hvm_hw_pci_irqs {
/*
* Virtual interrupt wires for a single PCI bus.
* Indexed by: device*4 + INTx#.
*/
union {
unsigned long i[16 / sizeof (unsigned long)]; /* DECLARE_BITMAP(i, 32*4); */
uint64_t pad[2];
};
};
DECLARE_HVM_SAVE_TYPE(PCI_IRQ, 7, struct hvm_hw_pci_irqs);
struct hvm_hw_isa_irqs {
/*
* Virtual interrupt wires for ISA devices.
* Indexed by ISA IRQ (assumes no ISA-device IRQ sharing).
*/
union {
unsigned long i[1]; /* DECLARE_BITMAP(i, 16); */
uint64_t pad[1];
};
};
DECLARE_HVM_SAVE_TYPE(ISA_IRQ, 8, struct hvm_hw_isa_irqs);
struct hvm_hw_pci_link {
/*
* PCI-ISA interrupt router.
* Each PCI <device:INTx#> is 'wire-ORed' into one of four links using
* the traditional 'barber's pole' mapping ((device + INTx#) & 3).
* The router provides a programmable mapping from each link to a GSI.
*/
uint8_t route[4];
uint8_t pad0[4];
};
DECLARE_HVM_SAVE_TYPE(PCI_LINK, 9, struct hvm_hw_pci_link);
/*
* PIT
*/
struct hvm_hw_pit {
struct hvm_hw_pit_channel {
uint32_t count; /* can be 65536 */
uint16_t latched_count;
uint8_t count_latched;
uint8_t status_latched;
uint8_t status;
uint8_t read_state;
uint8_t write_state;
uint8_t write_latch;
uint8_t rw_mode;
uint8_t mode;
uint8_t bcd; /* not supported */
uint8_t gate; /* timer start */
} channels[3]; /* 3 x 16 bytes */
uint32_t speaker_data_on;
uint32_t pad0;
};
DECLARE_HVM_SAVE_TYPE(PIT, 10, struct hvm_hw_pit);
/*
* RTC
*/
#define RTC_CMOS_SIZE 14
struct hvm_hw_rtc {
/* CMOS bytes */
uint8_t cmos_data[RTC_CMOS_SIZE];
/* Index register for 2-part operations */
uint8_t cmos_index;
uint8_t pad0;
};
DECLARE_HVM_SAVE_TYPE(RTC, 11, struct hvm_hw_rtc);
/*
* HPET
*/
#define HPET_TIMER_NUM 3 /* 3 timers supported now */
struct hvm_hw_hpet {
/* Memory-mapped, software visible registers */
uint64_t capability; /* capabilities */
uint64_t res0; /* reserved */
uint64_t config; /* configuration */
uint64_t res1; /* reserved */
uint64_t isr; /* interrupt status reg */
uint64_t res2[25]; /* reserved */
uint64_t mc64; /* main counter */
uint64_t res3; /* reserved */
struct { /* timers */
uint64_t config; /* configuration/cap */
uint64_t cmp; /* comparator */
uint64_t fsb; /* FSB route, not supported now */
uint64_t res4; /* reserved */
} timers[HPET_TIMER_NUM];
uint64_t res5[4*(24-HPET_TIMER_NUM)]; /* reserved, up to 0x3ff */
/* Hidden register state */
uint64_t period[HPET_TIMER_NUM]; /* Last value written to comparator */
};
DECLARE_HVM_SAVE_TYPE(HPET, 12, struct hvm_hw_hpet);
/*
* PM timer
*/
struct hvm_hw_pmtimer {
uint32_t tmr_val; /* PM_TMR_BLK.TMR_VAL: 32bit free-running counter */
uint16_t pm1a_sts; /* PM1a_EVT_BLK.PM1a_STS: status register */
uint16_t pm1a_en; /* PM1a_EVT_BLK.PM1a_EN: enable register */
};
DECLARE_HVM_SAVE_TYPE(PMTIMER, 13, struct hvm_hw_pmtimer);
/*
* MTRR MSRs
*/
struct hvm_hw_mtrr {
#define MTRR_VCNT 8
#define NUM_FIXED_MSR 11
uint64_t msr_pat_cr;
/* mtrr physbase & physmask msr pair*/
uint64_t msr_mtrr_var[MTRR_VCNT*2];
uint64_t msr_mtrr_fixed[NUM_FIXED_MSR];
uint64_t msr_mtrr_cap;
uint64_t msr_mtrr_def_type;
};
DECLARE_HVM_SAVE_TYPE(MTRR, 14, struct hvm_hw_mtrr);
/*
* The save area of XSAVE/XRSTOR.
*/
struct hvm_hw_cpu_xsave {
uint64_t xfeature_mask;
uint64_t xcr0; /* Updated by XSETBV */
uint64_t xcr0_accum; /* Updated by XSETBV */
struct {
struct { char x[512]; } fpu_sse;
struct {
uint64_t xstate_bv; /* Updated by XRSTOR */
uint64_t reserved[7];
} xsave_hdr; /* The 64-byte header */
struct { char x[0]; } ymm; /* YMM */
} save_area;
};
#define CPU_XSAVE_CODE 16
/*
* Viridian hypervisor context.
*/
struct hvm_viridian_domain_context {
uint64_t hypercall_gpa;
uint64_t guest_os_id;
};
DECLARE_HVM_SAVE_TYPE(VIRIDIAN_DOMAIN, 15, struct hvm_viridian_domain_context);
struct hvm_viridian_vcpu_context {
uint64_t apic_assist;
};
DECLARE_HVM_SAVE_TYPE(VIRIDIAN_VCPU, 17, struct hvm_viridian_vcpu_context);
struct hvm_vmce_vcpu {
uint64_t caps;
uint64_t mci_ctl2_bank0;
uint64_t mci_ctl2_bank1;
};
DECLARE_HVM_SAVE_TYPE(VMCE_VCPU, 18, struct hvm_vmce_vcpu);
struct hvm_tsc_adjust {
uint64_t tsc_adjust;
};
DECLARE_HVM_SAVE_TYPE(TSC_ADJUST, 19, struct hvm_tsc_adjust);
/*
* Largest type-code in use
*/
#define HVM_SAVE_CODE_MAX 19
#endif /* __XEN_PUBLIC_HVM_SAVE_X86_H__ */