hw/xen_common.h

   1 #ifndef QEMU_HW_XEN_COMMON_H
   2 #define QEMU_HW_XEN_COMMON_H 1
   3
   4 #include "config-host.h"
   5
   6 #include <stddef.h>
   7 #include <inttypes.h>
   8
   9 #include <xenctrl.h>
  10 #include <xs.h>
  11 #include <xen/io/xenbus.h>
  12
  13 #include "hw.h"
  14 #include "xen.h"
  15 #include "qemu-queue.h"
  16
  17 /*
  18  * We don't support Xen prior to 3.3.0.
  19  */
  20
  21 /* Xen before 4.0 */
  22 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
  23 static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
  24                                         xen_pfn_t *arr, int *err,
  25                                         unsigned int num)
  26 {
  27     return xc_map_foreign_batch(xc_handle, dom, prot, arr, num);
  28 }
  29 #endif
  30
  31
  32 /* Xen before 4.1 */
  33 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
  34
  35 typedef int XenXC;
  36 typedef int XenEvtchn;
  37 typedef int XenGnttab;
  38
  39 #  define XC_INTERFACE_FMT "%i"
  40 #  define XC_HANDLER_INITIAL_VALUE    -1
  41
  42 static inline XenEvtchn xen_xc_evtchn_open(void *logger,
  43                                            unsigned int open_flags)
  44 {
  45     return xc_evtchn_open();
  46 }
  47
  48 static inline XenGnttab xen_xc_gnttab_open(void *logger,
  49                                            unsigned int open_flags)
  50 {
  51     return xc_gnttab_open();
  52 }
  53
  54 static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
  55                                           unsigned int open_flags)
  56 {
  57     return xc_interface_open();
  58 }
  59
  60 static inline int xc_fd(int xen_xc)
  61 {
  62     return xen_xc;
  63 }
  64
  65
  66 static inline int xc_domain_populate_physmap_exact
  67     (XenXC xc_handle, uint32_t domid, unsigned long nr_extents,
  68      unsigned int extent_order, unsigned int mem_flags, xen_pfn_t *extent_start)
  69 {
  70     return xc_domain_memory_populate_physmap
  71         (xc_handle, domid, nr_extents, extent_order, mem_flags, extent_start);
  72 }
  73
  74 static inline int xc_domain_add_to_physmap(int xc_handle, uint32_t domid,
  75                                            unsigned int space, unsigned long idx,
  76                                            xen_pfn_t gpfn)
  77 {
  78     struct xen_add_to_physmap xatp = {
  79         .domid = domid,
  80         .space = space,
  81         .idx = idx,
  82         .gpfn = gpfn,
  83     };
  84
  85     return xc_memory_op(xc_handle, XENMEM_add_to_physmap, &xatp);
  86 }
  87
  88 static inline struct xs_handle *xs_open(unsigned long flags)
  89 {
  90     return xs_daemon_open();
  91 }
  92
  93 static inline void xs_close(struct xs_handle *xsh)
  94 {
  95     if (xsh != NULL) {
  96         xs_daemon_close(xsh);
  97     }
  98 }
  99
 100
 101 /* Xen 4.1 */
 102 #else
 103
 104 typedef xc_interface *XenXC;
 105 typedef xc_evtchn *XenEvtchn;
 106 typedef xc_gnttab *XenGnttab;
 107
 108 #  define XC_INTERFACE_FMT "%p"
 109 #  define XC_HANDLER_INITIAL_VALUE    NULL
 110
 111 static inline XenEvtchn xen_xc_evtchn_open(void *logger,
 112                                            unsigned int open_flags)
 113 {
 114     return xc_evtchn_open(logger, open_flags);
 115 }
 116
 117 static inline XenGnttab xen_xc_gnttab_open(void *logger,
 118                                            unsigned int open_flags)
 119 {
 120     return xc_gnttab_open(logger, open_flags);
 121 }
 122
 123 static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
 124                                           unsigned int open_flags)
 125 {
 126     return xc_interface_open(logger, dombuild_logger, open_flags);
 127 }
 128
 129 /* FIXME There is now way to have the xen fd */
 130 static inline int xc_fd(xc_interface *xen_xc)
 131 {
 132     return -1;
 133 }
 134 #endif
 135
 136 void destroy_hvm_domain(void);
 137
 138 #endif /* QEMU_HW_XEN_COMMON_H */