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#ifndef XENCALL_PRIVATE_H
#define XENCALL_PRIVATE_H
#include <xentoollog.h>
#include <xentoolcore_internal.h>
#include <xencall.h>
#include <xen/xen.h>
#include <xen/sys/privcmd.h>
#ifndef PAGE_SHIFT /* Mini-os, Yukk */
#define PAGE_SHIFT 12
#endif
#ifndef PAGE_SIZE
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#endif
#ifndef PAGE_MASK
#define PAGE_MASK (~(PAGE_SIZE-1))
#endif
struct xencall_handle {
xentoollog_logger *logger, *logger_tofree;
unsigned flags;
/* partially with /dev/ no /dev/ */
/* initialised xen/hypercall xen/hypercall */
int fd; /* any >= 0 >= 0 */
int buf_fd; /* any >= 0 -1 */
Xentoolcore__Active_Handle tc_ah;
/*
* A simple cache of unused, single page, hypercall buffers
*
* Protected by a global lock.
*/
#define BUFFER_CACHE_SIZE 4
int buffer_cache_nr;
void *buffer_cache[BUFFER_CACHE_SIZE];
/*
* Hypercall buffer statistics. All protected by the global
* buffer_cache lock.
*/
int buffer_total_allocations;
int buffer_total_releases;
int buffer_current_allocations;
int buffer_maximum_allocations;
int buffer_cache_hits;
int buffer_cache_misses;
int buffer_cache_toobig;
};
int osdep_xencall_open(xencall_handle *xcall);
int osdep_xencall_close(xencall_handle *xcall);
long osdep_hypercall(xencall_handle *xcall, privcmd_hypercall_t *hypercall);
void *osdep_alloc_pages(xencall_handle *xcall, size_t nr_pages);
void osdep_free_pages(xencall_handle *xcall, void *p, size_t nr_pages);
void buffer_release_cache(xencall_handle *xcall);
#define PERROR(_f...) xtl_log(xcall->logger, XTL_ERROR, errno, "xencall", _f)
#endif
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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