18549Sjkh/* SPDX-License-Identifier: GPL-2.0 */
250479Speter#ifndef _XEN_XEN_H
38549Sjkh#define _XEN_XEN_H
48549Sjkh
58549Sjkh#include <linux/types.h>
617985Sjkh
717985Sjkhenum xen_domain_type {
88549Sjkh	XEN_NATIVE,		/* running on bare hardware    */
98549Sjkh	XEN_PV_DOMAIN,		/* running in a PV domain      */
108549Sjkh	XEN_HVM_DOMAIN,		/* running in a Xen hvm domain */
118549Sjkh};
128549Sjkh
138881Srgrimes#ifdef CONFIG_XEN
148881Srgrimesextern enum xen_domain_type xen_domain_type;
158549Sjkh#else
168549Sjkh#define xen_domain_type		XEN_NATIVE
178549Sjkh#endif
188549Sjkh
198549Sjkh#ifdef CONFIG_XEN_PVH
2017985Sjkhextern bool xen_pvh;
218677Sjkh#else
228677Sjkh#define xen_pvh			0
2317985Sjkh#endif
248677Sjkh
258677Sjkh#define xen_domain()		(xen_domain_type != XEN_NATIVE)
268677Sjkh#define xen_pv_domain()		(xen_domain_type == XEN_PV_DOMAIN)
278677Sjkh#define xen_hvm_domain()	(xen_domain_type == XEN_HVM_DOMAIN)
288677Sjkh#define xen_pvh_domain()	(xen_pvh)
298677Sjkh
308549Sjkhextern uint32_t xen_start_flags;
318549Sjkh
328549Sjkh#ifdef CONFIG_XEN_PV
338756Sjkhextern bool xen_pv_pci_possible;
348756Sjkh#else
358756Sjkh#define xen_pv_pci_possible	0
368756Sjkh#endif
378756Sjkh
388756Sjkh#include <xen/interface/hvm/start_info.h>
398756Sjkhextern struct hvm_start_info pvh_start_info;
4021243Sjkhvoid xen_prepare_pvh(void);
418549Sjkhstruct pt_regs;
4263118Sumevoid xen_pv_evtchn_do_upcall(struct pt_regs *regs);
4363118Sume
4463118Sume#ifdef CONFIG_XEN_DOM0
4550780Sjkh#include <xen/interface/xen.h>
468549Sjkh#include <asm/xen/hypervisor.h>
4714321Sjkh
4814321Sjkh#define xen_initial_domain()	(xen_domain() && \
4914321Sjkh				 (xen_start_flags & SIF_INITDOMAIN))
508574Sgpalmer#else  /* !CONFIG_XEN_DOM0 */
518574Sgpalmer#define xen_initial_domain()	(0)
5212661Speter#endif	/* CONFIG_XEN_DOM0 */
5363118Sume
5412661Speterstruct bio_vec;
5512661Speterstruct page;
5663118Sume
578549Sjkhbool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
588574Sgpalmer		const struct page *page);
598549Sjkh
608549Sjkh#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
618549Sjkhextern u64 xen_saved_max_mem_size;
628549Sjkh#endif
638549Sjkh
648549Sjkh#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
6520484Sjkhint xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
6621243Sjkhvoid xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
6717985Sjkh#include <linux/ioport.h>
688549Sjkhint arch_xen_unpopulated_init(struct resource **res);
6920484Sjkh#else
7021243Sjkh#include <xen/balloon.h>
7117985Sjkhstatic inline int xen_alloc_unpopulated_pages(unsigned int nr_pages,
728549Sjkh		struct page **pages)
738549Sjkh{
7420484Sjkh	return xen_alloc_ballooned_pages(nr_pages, pages);
7521243Sjkh}
7663118Sumestatic inline void xen_free_unpopulated_pages(unsigned int nr_pages,
7763118Sume		struct page **pages)
788549Sjkh{
7920484Sjkh	xen_free_ballooned_pages(nr_pages, pages);
8063118Sume}
8163118Sume#endif
828556Sjkh
8320484Sjkh#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && defined(CONFIG_X86)
8421243Sjkhbool __init xen_processor_present(uint32_t acpi_id);
8563118Sume#else
8663118Sume#include <linux/bug.h>
878549Sjkhstatic inline bool xen_processor_present(uint32_t acpi_id)
8820484Sjkh{
8921243Sjkh	BUG();
908549Sjkh	return false;
9112661Speter}
928549Sjkh#endif
9320484Sjkh
9421243Sjkh#endif	/* _XEN_XEN_H */
958556Sjkh