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