1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _XEN_XEN_H 3#define _XEN_XEN_H 4 5#include <linux/types.h> 6 7enum xen_domain_type { 8 XEN_NATIVE, /* running on bare hardware */ 9 XEN_PV_DOMAIN, /* running in a PV domain */ 10 XEN_HVM_DOMAIN, /* running in a Xen hvm domain */ 11}; 12 13#ifdef CONFIG_XEN 14extern enum xen_domain_type xen_domain_type; 15#else 16#define xen_domain_type XEN_NATIVE 17#endif 18 19#ifdef CONFIG_XEN_PVH 20extern bool xen_pvh; 21#else 22#define xen_pvh 0 23#endif 24 25#define xen_domain() (xen_domain_type != XEN_NATIVE) 26#define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN) 27#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN) 28#define xen_pvh_domain() (xen_pvh) 29 30extern uint32_t xen_start_flags; 31 32#ifdef CONFIG_XEN_PV 33extern bool xen_pv_pci_possible; 34#else 35#define xen_pv_pci_possible 0 36#endif 37 38#include <xen/interface/hvm/start_info.h> 39extern struct hvm_start_info pvh_start_info; 40void xen_prepare_pvh(void); 41struct pt_regs; 42void xen_pv_evtchn_do_upcall(struct pt_regs *regs); 43 44#ifdef CONFIG_XEN_DOM0 45#include <xen/interface/xen.h> 46#include <asm/xen/hypervisor.h> 47 48#define xen_initial_domain() (xen_domain() && \ 49 (xen_start_flags & SIF_INITDOMAIN)) 50#else /* !CONFIG_XEN_DOM0 */ 51#define xen_initial_domain() (0) 52#endif /* CONFIG_XEN_DOM0 */ 53 54struct bio_vec; 55struct page; 56 57bool xen_biovec_phys_mergeable(const struct bio_vec *vec1, 58 const struct page *page); 59 60#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON) 61extern u64 xen_saved_max_mem_size; 62#endif 63 64#ifdef CONFIG_XEN_UNPOPULATED_ALLOC 65int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages); 66void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages); 67#include <linux/ioport.h> 68int arch_xen_unpopulated_init(struct resource **res); 69#else 70#include <xen/balloon.h> 71static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages, 72 struct page **pages) 73{ 74 return xen_alloc_ballooned_pages(nr_pages, pages); 75} 76static inline void xen_free_unpopulated_pages(unsigned int nr_pages, 77 struct page **pages) 78{ 79 xen_free_ballooned_pages(nr_pages, pages); 80} 81#endif 82 83#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && defined(CONFIG_X86) 84bool __init xen_processor_present(uint32_t acpi_id); 85#else 86#include <linux/bug.h> 87static inline bool xen_processor_present(uint32_t acpi_id) 88{ 89 BUG(); 90 return false; 91} 92#endif 93 94#endif /* _XEN_XEN_H */ 95