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

 #ifndef QEMU_HW_XEN_COMMON_H
 #define QEMU_HW_XEN_COMMON_H 1

 #include "config-host.h"

 #include <stddef.h>
 #include <inttypes.h>

 #include <xenctrl.h>
 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
 #  include <xs.h>
 #else
 #  include <xenstore.h>
 #endif
 #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 3.3.0.
  */

 /* Xen before 4.0 */
 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
 static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
                                         xen_pfn_t *arr, int *err,
                                         unsigned int num)
 {
     return xc_map_foreign_batch(xc_handle, dom, prot, arr, num);
 }
 #endif


 /* Xen before 4.1 */
 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410

 typedef int XenXC;
 typedef int XenEvtchn;
 typedef int XenGnttab;

 #  define XC_INTERFACE_FMT "%i"
 #  define XC_HANDLER_INITIAL_VALUE    -1

 static inline XenEvtchn xen_xc_evtchn_open(void *logger,
                                            unsigned int open_flags)
 {
     return xc_evtchn_open();
 }

 static inline XenGnttab xen_xc_gnttab_open(void *logger,
                                            unsigned int open_flags)
 {
     return xc_gnttab_open();
 }

 static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
                                           unsigned int open_flags)
 {
     return xc_interface_open();
 }

 static inline int xc_fd(int xen_xc)
 {
     return xen_xc;
 }


 static inline int xc_domain_populate_physmap_exact
     (XenXC xc_handle, uint32_t domid, unsigned long nr_extents,
      unsigned int extent_order, unsigned int mem_flags, xen_pfn_t *extent_start)
 {
     return xc_domain_memory_populate_physmap
         (xc_handle, domid, nr_extents, extent_order, mem_flags, extent_start);
 }

 static inline int xc_domain_add_to_physmap(int xc_handle, uint32_t domid,
                                            unsigned int space, unsigned long idx,
                                            xen_pfn_t gpfn)
 {
     struct xen_add_to_physmap xatp = {
         .domid = domid,
         .space = space,
         .idx = idx,
         .gpfn = gpfn,
     };

     return xc_memory_op(xc_handle, XENMEM_add_to_physmap, &xatp);
 }

 static inline struct xs_handle *xs_open(unsigned long flags)
 {
     return xs_daemon_open();
 }

 static inline void xs_close(struct xs_handle *xsh)
 {
     if (xsh != NULL) {
         xs_daemon_close(xsh);
     }
 }


 /* Xen 4.1 */
 #else

 typedef xc_interface *XenXC;
 typedef xc_evtchn *XenEvtchn;
 typedef xc_gnttab *XenGnttab;

 #  define XC_INTERFACE_FMT "%p"
 #  define XC_HANDLER_INITIAL_VALUE    NULL

 static inline XenEvtchn xen_xc_evtchn_open(void *logger,
                                            unsigned int open_flags)
 {
     return xc_evtchn_open(logger, open_flags);
 }

 static inline XenGnttab xen_xc_gnttab_open(void *logger,
                                            unsigned int open_flags)
 {
     return xc_gnttab_open(logger, open_flags);
 }

 static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
                                           unsigned int open_flags)
 {
     return xc_interface_open(logger, dombuild_logger, open_flags);
 }

 /* FIXME There is now way to have the xen fd */
 static inline int xc_fd(xc_interface *xen_xc)
 {
     return -1;
 }
 #endif

 /* Xen before 4.2 */
 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
 static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
         uint64_t addr, uint32_t data)
 {
     return -ENOSYS;
 }
 /* The followings are only to compile op_discard related code on older
  * Xen releases. */
 #define BLKIF_OP_DISCARD 5
 struct blkif_request_discard {
     uint64_t nr_sectors;
     uint64_t sector_number;
 };
 #else
 static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
         uint64_t addr, uint32_t data)
 {
     return xc_hvm_inject_msi(xen_xc, dom, addr, data);
 }
 #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(XenXC 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(XenXC 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

 /* 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(XenXC xc, domid_t dom,
                                           ioservid_t ioservid,
                                           MemoryRegionSection *section)
 {
 }

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

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

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

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

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

 static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
                                           ioservid_t *ioservid)
 {
     return 0;
 }

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

 static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
                                             ioservid_t ioservid,
                                             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;
 }

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

 /* Xen 4.5 */
 #else

 static inline void xen_map_memory_section(XenXC 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;

     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(XenXC 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;

     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(XenXC 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;

     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(XenXC 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;

     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(XenXC xc, domid_t dom,
                                   ioservid_t ioservid,
                                   PCIDevice *pci_dev)
 {
     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(XenXC xc, domid_t dom,
                                     ioservid_t ioservid,
                                     PCIDevice *pci_dev)
 {
     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 int xen_create_ioreq_server(XenXC 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 rc;
 }

 static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
                                             ioservid_t ioservid)
 {
     trace_xen_ioreq_server_destroy(ioservid);
     xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
 }

 static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
                                             ioservid_t ioservid,
                                             xen_pfn_t *ioreq_pfn,
                                             xen_pfn_t *bufioreq_pfn,
                                             evtchn_port_t *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(XenXC xc, domid_t dom,
                                              ioservid_t ioservid,
                                              bool enable)
 {
     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(XenXC 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(XenXC 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

 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 470
 static inline int xen_domain_create(XenXC 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(XenXC 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 /* QEMU_HW_XEN_COMMON_H */
	#ifndef QEMU_HW_XEN_COMMON_H
	#define QEMU_HW_XEN_COMMON_H 1

	#include "config-host.h"

	#include <stddef.h>
	#include <inttypes.h>

	#include <xenctrl.h>
	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
	# include <xs.h>
	#else
	# include <xenstore.h>
	#endif
	#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 3.3.0.
	*/

	/* Xen before 4.0 */
	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
	static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
	xen_pfn_t arr, int err,
	unsigned int num)
	{
	return xc_map_foreign_batch(xc_handle, dom, prot, arr, num);
	}
	#endif


	/* Xen before 4.1 */
	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410

	typedef int XenXC;
	typedef int XenEvtchn;
	typedef int XenGnttab;

	# define XC_INTERFACE_FMT "%i"
	# define XC_HANDLER_INITIAL_VALUE -1

	static inline XenEvtchn xen_xc_evtchn_open(void *logger,
	unsigned int open_flags)
	{
	return xc_evtchn_open();
	}

	static inline XenGnttab xen_xc_gnttab_open(void *logger,
	unsigned int open_flags)
	{
	return xc_gnttab_open();
	}

	static inline XenXC xen_xc_interface_open(void logger, void dombuild_logger,
	unsigned int open_flags)
	{
	return xc_interface_open();
	}

	static inline int xc_fd(int xen_xc)
	{
	return xen_xc;
	}


	static inline int xc_domain_populate_physmap_exact
	(XenXC xc_handle, uint32_t domid, unsigned long nr_extents,
	unsigned int extent_order, unsigned int mem_flags, xen_pfn_t *extent_start)
	{
	return xc_domain_memory_populate_physmap
	(xc_handle, domid, nr_extents, extent_order, mem_flags, extent_start);
	}

	static inline int xc_domain_add_to_physmap(int xc_handle, uint32_t domid,
	unsigned int space, unsigned long idx,
	xen_pfn_t gpfn)
	{
	struct xen_add_to_physmap xatp = {
	.domid = domid,
	.space = space,
	.idx = idx,
	.gpfn = gpfn,
	};

	return xc_memory_op(xc_handle, XENMEM_add_to_physmap, &xatp);
	}

	static inline struct xs_handle *xs_open(unsigned long flags)
	{
	return xs_daemon_open();
	}

	static inline void xs_close(struct xs_handle *xsh)
	{
	if (xsh != NULL) {
	xs_daemon_close(xsh);
	}
	}


	/* Xen 4.1 */
	#else

	typedef xc_interface *XenXC;
	typedef xc_evtchn *XenEvtchn;
	typedef xc_gnttab *XenGnttab;

	# define XC_INTERFACE_FMT "%p"
	# define XC_HANDLER_INITIAL_VALUE NULL

	static inline XenEvtchn xen_xc_evtchn_open(void *logger,
	unsigned int open_flags)
	{
	return xc_evtchn_open(logger, open_flags);
	}

	static inline XenGnttab xen_xc_gnttab_open(void *logger,
	unsigned int open_flags)
	{
	return xc_gnttab_open(logger, open_flags);
	}

	static inline XenXC xen_xc_interface_open(void logger, void dombuild_logger,
	unsigned int open_flags)
	{
	return xc_interface_open(logger, dombuild_logger, open_flags);
	}

	/* FIXME There is now way to have the xen fd */
	static inline int xc_fd(xc_interface *xen_xc)
	{
	return -1;
	}
	#endif

	/* Xen before 4.2 */
	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
	static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
	uint64_t addr, uint32_t data)
	{
	return -ENOSYS;
	}
	/* The followings are only to compile op_discard related code on older
	* Xen releases. */
	#define BLKIF_OP_DISCARD 5
	struct blkif_request_discard {
	uint64_t nr_sectors;
	uint64_t sector_number;
	};
	#else
	static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
	uint64_t addr, uint32_t data)
	{
	return xc_hvm_inject_msi(xen_xc, dom, addr, data);
	}
	#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(XenXC 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(XenXC 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

	/* 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(XenXC xc, domid_t dom,
	ioservid_t ioservid,
	MemoryRegionSection *section)
	{
	}

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

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

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

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

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

	static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
	ioservid_t *ioservid)
	{
	return 0;
	}

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

	static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
	ioservid_t ioservid,
	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;
	}

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

	/* Xen 4.5 */
	#else

	static inline void xen_map_memory_section(XenXC 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;

	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(XenXC 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;

	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(XenXC 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;

	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(XenXC 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;

	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(XenXC xc, domid_t dom,
	ioservid_t ioservid,
	PCIDevice *pci_dev)
	{
	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(XenXC xc, domid_t dom,
	ioservid_t ioservid,
	PCIDevice *pci_dev)
	{
	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 int xen_create_ioreq_server(XenXC 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 rc;
	}

	static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
	ioservid_t ioservid)
	{
	trace_xen_ioreq_server_destroy(ioservid);
	xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
	}

	static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
	ioservid_t ioservid,
	xen_pfn_t *ioreq_pfn,
	xen_pfn_t *bufioreq_pfn,
	evtchn_port_t *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(XenXC xc, domid_t dom,
	ioservid_t ioservid,
	bool enable)
	{
	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(XenXC 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(XenXC 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

	#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 470
	static inline int xen_domain_create(XenXC 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(XenXC 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 /* QEMU_HW_XEN_COMMON_H */