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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* domain.h: HVM per domain definitions
*
* Copyright (c) 2004, Intel Corporation.
* Copyright (c) 2005, International Business Machines Corporation
*/
#ifndef __ASM_X86_HVM_DOMAIN_H__
#define __ASM_X86_HVM_DOMAIN_H__
#include <xen/list.h>
#include <xen/mm.h>
#include <xen/radix-tree.h>
#include <asm/hvm/io.h>
#include <asm/hvm/vmx/vmcs.h>
#include <asm/hvm/svm/vmcb.h>
#ifdef CONFIG_MEM_SHARING
struct mem_sharing_domain
{
bool enabled, block_interrupts;
/*
* When releasing shared gfn's in a preemptible manner, recall where
* to resume the search.
*/
unsigned long next_shared_gfn_to_relinquish;
};
#endif
/*
* This structure defines function hooks to support hardware-assisted
* virtual interrupt delivery to guest. (e.g. VMX PI and SVM AVIC).
*
* These hooks are defined by the underlying arch-specific code
* as needed. For example:
* - When the domain is enabled with virtual IPI delivery
* - When the domain is enabled with virtual I/O int delivery
* and actually has a physical device assigned .
*/
struct hvm_pi_ops {
unsigned int flags;
/*
* Hook into arch_vcpu_block(), which is called
* from vcpu_block() and vcpu_do_poll().
*/
void (*vcpu_block)(struct vcpu *);
};
struct hvm_domain {
/* Guest page range used for non-default ioreq servers */
struct {
unsigned long base;
unsigned long mask; /* indexed by GFN minus base */
unsigned long legacy_mask; /* indexed by HVM param number */
} ioreq_gfn;
/* Cached CF8 for guest PCI config cycles */
uint32_t pci_cf8;
struct pl_time *pl_time;
struct hvm_io_handler *io_handler;
unsigned int io_handler_count;
/* Lock protects access to irq, vpic and vioapic. */
spinlock_t irq_lock;
struct hvm_irq *irq;
struct hvm_hw_vpic vpic[2]; /* 0=master; 1=slave */
struct hvm_vioapic **vioapic;
unsigned int nr_vioapics;
struct hvm_hw_stdvga stdvga;
/*
* hvm_hw_pmtimer is a publicly-visible name. We will defer renaming
* it to the more appropriate hvm_hw_acpi until the expected
* comprehensive rewrte of migration code, thus avoiding code churn
* in public header files.
* Internally, however, we will be using hvm_hw_acpi.
*/
#define hvm_hw_acpi hvm_hw_pmtimer
struct hvm_hw_acpi acpi;
/* VCPU which is current target for 8259 interrupts. */
struct vcpu *i8259_target;
/* emulated irq to pirq */
struct radix_tree_root emuirq_pirq;
uint64_t *params;
/* Memory ranges with pinned cache attributes. */
struct list_head pinned_cacheattr_ranges;
/* VRAM dirty support. Protect with the domain paging lock. */
struct sh_dirty_vram *dirty_vram;
/* If one of vcpus of this domain is in no_fill_mode or
* mtrr/pat between vcpus is not the same, set is_in_uc_mode
*/
spinlock_t uc_lock;
bool is_in_uc_mode;
bool is_s3_suspended;
/* hypervisor intercepted msix table */
struct list_head msixtbl_list;
struct viridian_domain *viridian;
/*
* TSC value that VCPUs use to calculate their tsc_offset value.
* Used during initialization and save/restore.
*/
uint64_t sync_tsc;
uint64_t tsc_scaling_ratio;
unsigned long *io_bitmap;
/* List of guest to machine IO ports mapping. */
struct list_head g2m_ioport_list;
/* List of MMCFG regions trapped by Xen. */
struct list_head mmcfg_regions;
rwlock_t mmcfg_lock;
/* List of MSI-X tables. */
struct list_head msix_tables;
/* List of permanently write-mapped pages. */
struct {
spinlock_t lock;
struct list_head list;
} write_map;
struct hvm_pi_ops pi_ops;
union {
struct vmx_domain vmx;
struct svm_domain svm;
};
#ifdef CONFIG_MEM_SHARING
struct mem_sharing_domain mem_sharing;
#endif
};
#endif /* __ASM_X86_HVM_DOMAIN_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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