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#ifndef _IPXE_XEN_H
#define _IPXE_XEN_H
/** @file
*
* Xen interface
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/* Define Xen interface version before including any Xen header files */
#define __XEN_INTERFACE_VERSION__ 0x00040400
#include <stdint.h>
#include <ipxe/uaccess.h>
#include <xen/xen.h>
#include <xen/event_channel.h>
/* Memory barrier macros used by ring.h */
#define xen_mb() mb()
#define xen_rmb() rmb()
#define xen_wmb() wmb()
struct xen_hypercall;
/** A Xen grant table */
struct xen_grant {
/** Grant table entries */
struct grant_entry_v1 *table;
/** Total grant table length */
size_t len;
/** Entry size shift (for later version tables) */
unsigned int shift;
/** Number of grant table entries in use */
unsigned int used;
/** Most recently used grant reference */
unsigned int ref;
};
/** A XenStore */
struct xen_store {
/** XenStore domain interface */
struct xenstore_domain_interface *intf;
/** Event channel */
evtchn_port_t port;
};
/** A Xen hypervisor */
struct xen_hypervisor {
/** Hypercall table */
struct xen_hypercall *hypercall;
/** Shared info page */
struct shared_info *shared;
/** Grant table */
struct xen_grant grant;
/** XenStore */
struct xen_store store;
};
#include <bits/xen.h>
/**
* Convert a Xen status code to an iPXE status code
*
* @v xenrc Xen status code (negated)
* @ret rc iPXE status code (before negation)
*
* Xen status codes are defined in the file include/xen/errno.h in the
* Xen repository. They happen to match the Linux error codes, some
* of which can be found in our include/ipxe/errno/linux.h.
*/
#define EXEN( xenrc ) EPLATFORM ( EINFO_EPLATFORM, -(xenrc) )
#endif /* _IPXE_XEN_H */
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