include/hw/xen/xen_common.h - qemu-android - Git at Google

 #ifndef QEMU_HW_XEN_COMMON_H
 #define QEMU_HW_XEN_COMMON_H

 /*
  * If we have new enough libxenctrl then we do not want/need these compat
  * interfaces, despite what the user supplied cflags might say. They
  * must be undefined before including xenctrl.h
  */
 #undef XC_WANT_COMPAT_EVTCHN_API
 #undef XC_WANT_COMPAT_GNTTAB_API
 #undef XC_WANT_COMPAT_MAP_FOREIGN_API

 #include <xenctrl.h>
 #include <xenstore.h>
 #include <xen/io/xenbus.h>

 #include "hw/hw.h"
 #include "hw/xen/xen.h"
 #include "hw/pci/pci.h"
 #include "qemu/queue.h"
 #include "trace.h"

 /*
  * We don't support Xen prior to 4.2.0.
  */

 /* Xen 4.2 through 4.6 */
 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 471

 typedef xc_interface xenforeignmemory_handle;
 typedef xc_evtchn xenevtchn_handle;
 typedef xc_gnttab xengnttab_handle;

 #define xenevtchn_open(l, f) xc_evtchn_open(l, f);
 #define xenevtchn_close(h) xc_evtchn_close(h)
 #define xenevtchn_fd(h) xc_evtchn_fd(h)
 #define xenevtchn_pending(h) xc_evtchn_pending(h)
 #define xenevtchn_notify(h, p) xc_evtchn_notify(h, p)
 #define xenevtchn_bind_interdomain(h, d, p) xc_evtchn_bind_interdomain(h, d, p)
 #define xenevtchn_unmask(h, p) xc_evtchn_unmask(h, p)
 #define xenevtchn_unbind(h, p) xc_evtchn_unbind(h, p)

 #define xengnttab_open(l, f) xc_gnttab_open(l, f)
 #define xengnttab_close(h) xc_gnttab_close(h)
 #define xengnttab_set_max_grants(h, n) xc_gnttab_set_max_grants(h, n)
 #define xengnttab_map_grant_ref(h, d, r, p) xc_gnttab_map_grant_ref(h, d, r, p)
 #define xengnttab_unmap(h, a, n) xc_gnttab_munmap(h, a, n)
 #define xengnttab_map_grant_refs(h, c, d, r, p) \
     xc_gnttab_map_grant_refs(h, c, d, r, p)
 #define xengnttab_map_domain_grant_refs(h, c, d, r, p) \
     xc_gnttab_map_domain_grant_refs(h, c, d, r, p)

 #define xenforeignmemory_open(l, f) xen_xc

 static inline void *xenforeignmemory_map(xc_interface *h, uint32_t dom,
                                          int prot, size_t pages,
                                          const xen_pfn_t arr[/*pages*/],
                                          int err[/*pages*/])
 {
     if (err)
         return xc_map_foreign_bulk(h, dom, prot, arr, err, pages);
     else
         return xc_map_foreign_pages(h, dom, prot, arr, pages);
 }

 #define xenforeignmemory_unmap(h, p, s) munmap(p, s * XC_PAGE_SIZE)

 #else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 471 */

 #include <xenevtchn.h>
 #include <xengnttab.h>
 #include <xenforeignmemory.h>

 #endif

 void destroy_hvm_domain(bool reboot);

 /* shutdown/destroy current domain because of an error */
 void xen_shutdown_fatal_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);

 #ifdef HVM_PARAM_VMPORT_REGS_PFN
 static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
                                           xen_pfn_t *vmport_regs_pfn)
 {
     int rc;
     uint64_t value;
     rc = xc_hvm_param_get(xc, dom, HVM_PARAM_VMPORT_REGS_PFN, &value);
     if (rc >= 0) {
         *vmport_regs_pfn = (xen_pfn_t) value;
     }
     return rc;
 }
 #else
 static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
                                           xen_pfn_t *vmport_regs_pfn)
 {
     return -ENOSYS;
 }
 #endif

 /* Xen before 4.6 */
 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460

 #ifndef HVM_IOREQSRV_BUFIOREQ_ATOMIC
 #define HVM_IOREQSRV_BUFIOREQ_ATOMIC 2
 #endif

 #endif

 static inline int xen_get_default_ioreq_server_info(xc_interface *xc,
                                                     domid_t dom,
                                                     xen_pfn_t *ioreq_pfn,
                                                     xen_pfn_t *bufioreq_pfn,
                                                     evtchn_port_t
                                                         *bufioreq_evtchn)
 {
     unsigned long param;
     int rc;

     rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
     if (rc < 0) {
         fprintf(stderr, "failed to get HVM_PARAM_IOREQ_PFN\n");
         return -1;
     }

     *ioreq_pfn = param;

     rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
     if (rc < 0) {
         fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_PFN\n");
         return -1;
     }

     *bufioreq_pfn = param;

     rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
                           &param);
     if (rc < 0) {
         fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
         return -1;
     }

     *bufioreq_evtchn = param;

     return 0;
 }

 /* Xen before 4.5 */
 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 450

 #ifndef HVM_PARAM_BUFIOREQ_EVTCHN
 #define HVM_PARAM_BUFIOREQ_EVTCHN 26
 #endif

 #define IOREQ_TYPE_PCI_CONFIG 2

 typedef uint16_t ioservid_t;

 static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
                                           ioservid_t ioservid,
                                           MemoryRegionSection *section)
 {
 }

 static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
                                             ioservid_t ioservid,
                                             MemoryRegionSection *section)
 {
 }

 static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
                                       ioservid_t ioservid,
                                       MemoryRegionSection *section)
 {
 }

 static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
                                         ioservid_t ioservid,
                                         MemoryRegionSection *section)
 {
 }

 static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
                                   ioservid_t ioservid,
                                   PCIDevice *pci_dev)
 {
 }

 static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
                                     ioservid_t ioservid,
                                     PCIDevice *pci_dev)
 {
 }

 static inline void xen_create_ioreq_server(xc_interface *xc, domid_t dom,
                                            ioservid_t *ioservid)
 {
 }

 static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
                                             ioservid_t ioservid)
 {
 }

 static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
                                             ioservid_t ioservid,
                                             xen_pfn_t *ioreq_pfn,
                                             xen_pfn_t *bufioreq_pfn,
                                             evtchn_port_t *bufioreq_evtchn)
 {
     return xen_get_default_ioreq_server_info(xc, dom, ioreq_pfn, bufioreq_pfn,
                                              bufioreq_evtchn);
 }

 static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
                                              ioservid_t ioservid,
                                              bool enable)
 {
     return 0;
 }

 /* Xen 4.5 */
 #else

 static bool use_default_ioreq_server;

 static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
                                           ioservid_t ioservid,
                                           MemoryRegionSection *section)
 {
     hwaddr start_addr = section->offset_within_address_space;
     ram_addr_t size = int128_get64(section->size);
     hwaddr end_addr = start_addr + size - 1;

     if (use_default_ioreq_server) {
         return;
     }

     trace_xen_map_mmio_range(ioservid, start_addr, end_addr);
     xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 1,
                                         start_addr, end_addr);
 }

 static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
                                             ioservid_t ioservid,
                                             MemoryRegionSection *section)
 {
     hwaddr start_addr = section->offset_within_address_space;
     ram_addr_t size = int128_get64(section->size);
     hwaddr end_addr = start_addr + size - 1;

     if (use_default_ioreq_server) {
         return;
     }


     trace_xen_unmap_mmio_range(ioservid, start_addr, end_addr);
     xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 1,
                                             start_addr, end_addr);
 }

 static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
                                       ioservid_t ioservid,
                                       MemoryRegionSection *section)
 {
     hwaddr start_addr = section->offset_within_address_space;
     ram_addr_t size = int128_get64(section->size);
     hwaddr end_addr = start_addr + size - 1;

     if (use_default_ioreq_server) {
         return;
     }


     trace_xen_map_portio_range(ioservid, start_addr, end_addr);
     xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 0,
                                         start_addr, end_addr);
 }

 static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
                                         ioservid_t ioservid,
                                         MemoryRegionSection *section)
 {
     hwaddr start_addr = section->offset_within_address_space;
     ram_addr_t size = int128_get64(section->size);
     hwaddr end_addr = start_addr + size - 1;

     if (use_default_ioreq_server) {
         return;
     }

     trace_xen_unmap_portio_range(ioservid, start_addr, end_addr);
     xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 0,
                                             start_addr, end_addr);
 }

 static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
                                   ioservid_t ioservid,
                                   PCIDevice *pci_dev)
 {
     if (use_default_ioreq_server) {
         return;
     }

     trace_xen_map_pcidev(ioservid, pci_bus_num(pci_dev->bus),
                          PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
     xc_hvm_map_pcidev_to_ioreq_server(xc, dom, ioservid,
                                       0, pci_bus_num(pci_dev->bus),
                                       PCI_SLOT(pci_dev->devfn),
                                       PCI_FUNC(pci_dev->devfn));
 }

 static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
                                     ioservid_t ioservid,
                                     PCIDevice *pci_dev)
 {
     if (use_default_ioreq_server) {
         return;
     }

     trace_xen_unmap_pcidev(ioservid, pci_bus_num(pci_dev->bus),
                            PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
     xc_hvm_unmap_pcidev_from_ioreq_server(xc, dom, ioservid,
                                           0, pci_bus_num(pci_dev->bus),
                                           PCI_SLOT(pci_dev->devfn),
                                           PCI_FUNC(pci_dev->devfn));
 }

 static inline void xen_create_ioreq_server(xc_interface *xc, domid_t dom,
                                            ioservid_t *ioservid)
 {
     int rc = xc_hvm_create_ioreq_server(xc, dom, HVM_IOREQSRV_BUFIOREQ_ATOMIC,
                                         ioservid);

     if (rc == 0) {
         trace_xen_ioreq_server_create(*ioservid);
         return;
     }

     *ioservid = 0;
     use_default_ioreq_server = true;
     trace_xen_default_ioreq_server();
 }

 static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
                                             ioservid_t ioservid)
 {
     if (use_default_ioreq_server) {
         return;
     }

     trace_xen_ioreq_server_destroy(ioservid);
     xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
 }

 static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
                                             ioservid_t ioservid,
                                             xen_pfn_t *ioreq_pfn,
                                             xen_pfn_t *bufioreq_pfn,
                                             evtchn_port_t *bufioreq_evtchn)
 {
     if (use_default_ioreq_server) {
         return xen_get_default_ioreq_server_info(xc, dom, ioreq_pfn,
                                                  bufioreq_pfn,
                                                  bufioreq_evtchn);
     }

     return xc_hvm_get_ioreq_server_info(xc, dom, ioservid,
                                         ioreq_pfn, bufioreq_pfn,
                                         bufioreq_evtchn);
 }

 static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
                                              ioservid_t ioservid,
                                              bool enable)
 {
     if (use_default_ioreq_server) {
         return 0;
     }

     trace_xen_ioreq_server_state(ioservid, enable);
     return xc_hvm_set_ioreq_server_state(xc, dom, ioservid, enable);
 }

 #endif

 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
 static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t domid,
                                                unsigned int space,
                                                unsigned long idx,
                                                xen_pfn_t gpfn)
 {
     return xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
 }
 #else
 static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t domid,
                                                unsigned int space,
                                                unsigned long idx,
                                                xen_pfn_t gpfn)
 {
     /* In Xen 4.6 rc is -1 and errno contains the error value. */
     int rc = xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
     if (rc == -1)
         return errno;
     return rc;
 }
 #endif

 #ifdef CONFIG_XEN_PV_DOMAIN_BUILD
 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 470
 static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
                                     xen_domain_handle_t handle, uint32_t flags,
                                     uint32_t *pdomid)
 {
     return xc_domain_create(xc, ssidref, handle, flags, pdomid);
 }
 #else
 static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
                                     xen_domain_handle_t handle, uint32_t flags,
                                     uint32_t *pdomid)
 {
     return xc_domain_create(xc, ssidref, handle, flags, pdomid, NULL);
 }
 #endif
 #endif

 #endif /* QEMU_HW_XEN_COMMON_H */
	#ifndef QEMU_HW_XEN_COMMON_H
	#define QEMU_HW_XEN_COMMON_H

	/*
	* If we have new enough libxenctrl then we do not want/need these compat
	* interfaces, despite what the user supplied cflags might say. They
	* must be undefined before including xenctrl.h
	*/
	#undef XC_WANT_COMPAT_EVTCHN_API
	#undef XC_WANT_COMPAT_GNTTAB_API
	#undef XC_WANT_COMPAT_MAP_FOREIGN_API

	#include <xenctrl.h>
	#include <xenstore.h>
	#include <xen/io/xenbus.h>

	#include "hw/hw.h"
	#include "hw/xen/xen.h"
	#include "hw/pci/pci.h"
	#include "qemu/queue.h"
	#include "trace.h"

	/*
	* We don't support Xen prior to 4.2.0.
	*/

	/* Xen 4.2 through 4.6 */
	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 471

	typedef xc_interface xenforeignmemory_handle;
	typedef xc_evtchn xenevtchn_handle;
	typedef xc_gnttab xengnttab_handle;

	#define xenevtchn_open(l, f) xc_evtchn_open(l, f);
	#define xenevtchn_close(h) xc_evtchn_close(h)
	#define xenevtchn_fd(h) xc_evtchn_fd(h)
	#define xenevtchn_pending(h) xc_evtchn_pending(h)
	#define xenevtchn_notify(h, p) xc_evtchn_notify(h, p)
	#define xenevtchn_bind_interdomain(h, d, p) xc_evtchn_bind_interdomain(h, d, p)
	#define xenevtchn_unmask(h, p) xc_evtchn_unmask(h, p)
	#define xenevtchn_unbind(h, p) xc_evtchn_unbind(h, p)

	#define xengnttab_open(l, f) xc_gnttab_open(l, f)
	#define xengnttab_close(h) xc_gnttab_close(h)
	#define xengnttab_set_max_grants(h, n) xc_gnttab_set_max_grants(h, n)
	#define xengnttab_map_grant_ref(h, d, r, p) xc_gnttab_map_grant_ref(h, d, r, p)
	#define xengnttab_unmap(h, a, n) xc_gnttab_munmap(h, a, n)
	#define xengnttab_map_grant_refs(h, c, d, r, p) \
	xc_gnttab_map_grant_refs(h, c, d, r, p)
	#define xengnttab_map_domain_grant_refs(h, c, d, r, p) \
	xc_gnttab_map_domain_grant_refs(h, c, d, r, p)

	#define xenforeignmemory_open(l, f) xen_xc

	static inline void xenforeignmemory_map(xc_interface h, uint32_t dom,
	int prot, size_t pages,
	const xen_pfn_t arr[/pages/],
	int err[/pages/])
	{
	if (err)
	return xc_map_foreign_bulk(h, dom, prot, arr, err, pages);
	else
	return xc_map_foreign_pages(h, dom, prot, arr, pages);
	}

	#define xenforeignmemory_unmap(h, p, s) munmap(p, s * XC_PAGE_SIZE)

	#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 471 */

	#include <xenevtchn.h>
	#include <xengnttab.h>
	#include <xenforeignmemory.h>

	#endif

	void destroy_hvm_domain(bool reboot);

	/* shutdown/destroy current domain because of an error */
	void xen_shutdown_fatal_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);

	#ifdef HVM_PARAM_VMPORT_REGS_PFN
	static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
	xen_pfn_t *vmport_regs_pfn)
	{
	int rc;
	uint64_t value;
	rc = xc_hvm_param_get(xc, dom, HVM_PARAM_VMPORT_REGS_PFN, &value);
	if (rc >= 0) {
	*vmport_regs_pfn = (xen_pfn_t) value;
	}
	return rc;
	}
	#else
	static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
	xen_pfn_t *vmport_regs_pfn)
	{
	return -ENOSYS;
	}
	#endif

	/* Xen before 4.6 */
	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460

	#ifndef HVM_IOREQSRV_BUFIOREQ_ATOMIC
	#define HVM_IOREQSRV_BUFIOREQ_ATOMIC 2
	#endif

	#endif

	static inline int xen_get_default_ioreq_server_info(xc_interface *xc,
	domid_t dom,
	xen_pfn_t *ioreq_pfn,
	xen_pfn_t *bufioreq_pfn,
	evtchn_port_t
	*bufioreq_evtchn)
	{
	unsigned long param;
	int rc;

	rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
	if (rc < 0) {
	fprintf(stderr, "failed to get HVM_PARAM_IOREQ_PFN\n");
	return -1;
	}

	*ioreq_pfn = param;

	rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
	if (rc < 0) {
	fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_PFN\n");
	return -1;
	}

	*bufioreq_pfn = param;

	rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
	&param);
	if (rc < 0) {
	fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
	return -1;
	}

	*bufioreq_evtchn = param;

	return 0;
	}

	/* Xen before 4.5 */
	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 450

	#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
	#define HVM_PARAM_BUFIOREQ_EVTCHN 26
	#endif

	#define IOREQ_TYPE_PCI_CONFIG 2

	typedef uint16_t ioservid_t;

	static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	MemoryRegionSection *section)
	{
	}

	static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	MemoryRegionSection *section)
	{
	}

	static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	MemoryRegionSection *section)
	{
	}

	static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	MemoryRegionSection *section)
	{
	}

	static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	PCIDevice *pci_dev)
	{
	}

	static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	PCIDevice *pci_dev)
	{
	}

	static inline void xen_create_ioreq_server(xc_interface *xc, domid_t dom,
	ioservid_t *ioservid)
	{
	}

	static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
	ioservid_t ioservid)
	{
	}

	static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	xen_pfn_t *ioreq_pfn,
	xen_pfn_t *bufioreq_pfn,
	evtchn_port_t *bufioreq_evtchn)
	{
	return xen_get_default_ioreq_server_info(xc, dom, ioreq_pfn, bufioreq_pfn,
	bufioreq_evtchn);
	}

	static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	bool enable)
	{
	return 0;
	}

	/* Xen 4.5 */
	#else

	static bool use_default_ioreq_server;

	static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	MemoryRegionSection *section)
	{
	hwaddr start_addr = section->offset_within_address_space;
	ram_addr_t size = int128_get64(section->size);
	hwaddr end_addr = start_addr + size - 1;

	if (use_default_ioreq_server) {
	return;
	}

	trace_xen_map_mmio_range(ioservid, start_addr, end_addr);
	xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 1,
	start_addr, end_addr);
	}

	static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	MemoryRegionSection *section)
	{
	hwaddr start_addr = section->offset_within_address_space;
	ram_addr_t size = int128_get64(section->size);
	hwaddr end_addr = start_addr + size - 1;

	if (use_default_ioreq_server) {
	return;
	}


	trace_xen_unmap_mmio_range(ioservid, start_addr, end_addr);
	xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 1,
	start_addr, end_addr);
	}

	static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	MemoryRegionSection *section)
	{
	hwaddr start_addr = section->offset_within_address_space;
	ram_addr_t size = int128_get64(section->size);
	hwaddr end_addr = start_addr + size - 1;

	if (use_default_ioreq_server) {
	return;
	}


	trace_xen_map_portio_range(ioservid, start_addr, end_addr);
	xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 0,
	start_addr, end_addr);
	}

	static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	MemoryRegionSection *section)
	{
	hwaddr start_addr = section->offset_within_address_space;
	ram_addr_t size = int128_get64(section->size);
	hwaddr end_addr = start_addr + size - 1;

	if (use_default_ioreq_server) {
	return;
	}

	trace_xen_unmap_portio_range(ioservid, start_addr, end_addr);
	xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 0,
	start_addr, end_addr);
	}

	static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	PCIDevice *pci_dev)
	{
	if (use_default_ioreq_server) {
	return;
	}

	trace_xen_map_pcidev(ioservid, pci_bus_num(pci_dev->bus),
	PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
	xc_hvm_map_pcidev_to_ioreq_server(xc, dom, ioservid,
	0, pci_bus_num(pci_dev->bus),
	PCI_SLOT(pci_dev->devfn),
	PCI_FUNC(pci_dev->devfn));
	}

	static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	PCIDevice *pci_dev)
	{
	if (use_default_ioreq_server) {
	return;
	}

	trace_xen_unmap_pcidev(ioservid, pci_bus_num(pci_dev->bus),
	PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
	xc_hvm_unmap_pcidev_from_ioreq_server(xc, dom, ioservid,
	0, pci_bus_num(pci_dev->bus),
	PCI_SLOT(pci_dev->devfn),
	PCI_FUNC(pci_dev->devfn));
	}

	static inline void xen_create_ioreq_server(xc_interface *xc, domid_t dom,
	ioservid_t *ioservid)
	{
	int rc = xc_hvm_create_ioreq_server(xc, dom, HVM_IOREQSRV_BUFIOREQ_ATOMIC,
	ioservid);

	if (rc == 0) {
	trace_xen_ioreq_server_create(*ioservid);
	return;
	}

	*ioservid = 0;
	use_default_ioreq_server = true;
	trace_xen_default_ioreq_server();
	}

	static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
	ioservid_t ioservid)
	{
	if (use_default_ioreq_server) {
	return;
	}

	trace_xen_ioreq_server_destroy(ioservid);
	xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
	}

	static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	xen_pfn_t *ioreq_pfn,
	xen_pfn_t *bufioreq_pfn,
	evtchn_port_t *bufioreq_evtchn)
	{
	if (use_default_ioreq_server) {
	return xen_get_default_ioreq_server_info(xc, dom, ioreq_pfn,
	bufioreq_pfn,
	bufioreq_evtchn);
	}

	return xc_hvm_get_ioreq_server_info(xc, dom, ioservid,
	ioreq_pfn, bufioreq_pfn,
	bufioreq_evtchn);
	}

	static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
	ioservid_t ioservid,
	bool enable)
	{
	if (use_default_ioreq_server) {
	return 0;
	}

	trace_xen_ioreq_server_state(ioservid, enable);
	return xc_hvm_set_ioreq_server_state(xc, dom, ioservid, enable);
	}

	#endif

	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
	static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t domid,
	unsigned int space,
	unsigned long idx,
	xen_pfn_t gpfn)
	{
	return xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
	}
	#else
	static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t domid,
	unsigned int space,
	unsigned long idx,
	xen_pfn_t gpfn)
	{
	/* In Xen 4.6 rc is -1 and errno contains the error value. */
	int rc = xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
	if (rc == -1)
	return errno;
	return rc;
	}
	#endif

	#ifdef CONFIG_XEN_PV_DOMAIN_BUILD
	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 470
	static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
	xen_domain_handle_t handle, uint32_t flags,
	uint32_t *pdomid)
	{
	return xc_domain_create(xc, ssidref, handle, flags, pdomid);
	}
	#else
	static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
	xen_domain_handle_t handle, uint32_t flags,
	uint32_t *pdomid)
	{
	return xc_domain_create(xc, ssidref, handle, flags, pdomid, NULL);
	}
	#endif
	#endif

	#endif /* QEMU_HW_XEN_COMMON_H */