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[qemu.git] / 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 /* Xen before 4.2 */
137 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
138 static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
139         uint64_t addr, uint32_t data)
140 {
141     return -ENOSYS;
142 }
143 #else
144 static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
145         uint64_t addr, uint32_t data)
146 {
147     return xc_hvm_inject_msi(xen_xc, dom, addr, data);
148 }
149 #endif
150
151 void destroy_hvm_domain(void);
152
153 #endif /* QEMU_HW_XEN_COMMON_H */
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