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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 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
11 #  include <xs.h>
12 #else
13 #  include <xenstore.h>
14 #endif
15 #include <xen/io/xenbus.h>
16
17 #include "hw/hw.h"
18 #include "hw/xen.h"
19 #include "qemu/queue.h"
20
21 /*
22  * We don't support Xen prior to 3.3.0.
23  */
24
25 /* Xen before 4.0 */
26 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
27 static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
28                                         xen_pfn_t *arr, int *err,
29                                         unsigned int num)
30 {
31     return xc_map_foreign_batch(xc_handle, dom, prot, arr, num);
32 }
33 #endif
34
35
36 /* Xen before 4.1 */
37 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
38
39 typedef int XenXC;
40 typedef int XenEvtchn;
41 typedef int XenGnttab;
42
43 #  define XC_INTERFACE_FMT "%i"
44 #  define XC_HANDLER_INITIAL_VALUE    -1
45
46 static inline XenEvtchn xen_xc_evtchn_open(void *logger,
47                                            unsigned int open_flags)
48 {
49     return xc_evtchn_open();
50 }
51
52 static inline XenGnttab xen_xc_gnttab_open(void *logger,
53                                            unsigned int open_flags)
54 {
55     return xc_gnttab_open();
56 }
57
58 static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
59                                           unsigned int open_flags)
60 {
61     return xc_interface_open();
62 }
63
64 static inline int xc_fd(int xen_xc)
65 {
66     return xen_xc;
67 }
68
69
70 static inline int xc_domain_populate_physmap_exact
71     (XenXC xc_handle, uint32_t domid, unsigned long nr_extents,
72      unsigned int extent_order, unsigned int mem_flags, xen_pfn_t *extent_start)
73 {
74     return xc_domain_memory_populate_physmap
75         (xc_handle, domid, nr_extents, extent_order, mem_flags, extent_start);
76 }
77
78 static inline int xc_domain_add_to_physmap(int xc_handle, uint32_t domid,
79                                            unsigned int space, unsigned long idx,
80                                            xen_pfn_t gpfn)
81 {
82     struct xen_add_to_physmap xatp = {
83         .domid = domid,
84         .space = space,
85         .idx = idx,
86         .gpfn = gpfn,
87     };
88
89     return xc_memory_op(xc_handle, XENMEM_add_to_physmap, &xatp);
90 }
91
92 static inline struct xs_handle *xs_open(unsigned long flags)
93 {
94     return xs_daemon_open();
95 }
96
97 static inline void xs_close(struct xs_handle *xsh)
98 {
99     if (xsh != NULL) {
100         xs_daemon_close(xsh);
101     }
102 }
103
104
105 /* Xen 4.1 */
106 #else
107
108 typedef xc_interface *XenXC;
109 typedef xc_evtchn *XenEvtchn;
110 typedef xc_gnttab *XenGnttab;
111
112 #  define XC_INTERFACE_FMT "%p"
113 #  define XC_HANDLER_INITIAL_VALUE    NULL
114
115 static inline XenEvtchn xen_xc_evtchn_open(void *logger,
116                                            unsigned int open_flags)
117 {
118     return xc_evtchn_open(logger, open_flags);
119 }
120
121 static inline XenGnttab xen_xc_gnttab_open(void *logger,
122                                            unsigned int open_flags)
123 {
124     return xc_gnttab_open(logger, open_flags);
125 }
126
127 static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
128                                           unsigned int open_flags)
129 {
130     return xc_interface_open(logger, dombuild_logger, open_flags);
131 }
132
133 /* FIXME There is now way to have the xen fd */
134 static inline int xc_fd(xc_interface *xen_xc)
135 {
136     return -1;
137 }
138 #endif
139
140 /* Xen before 4.2 */
141 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
142 static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
143         uint64_t addr, uint32_t data)
144 {
145     return -ENOSYS;
146 }
147 #else
148 static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
149         uint64_t addr, uint32_t data)
150 {
151     return xc_hvm_inject_msi(xen_xc, dom, addr, data);
152 }
153 #endif
154
155 void destroy_hvm_domain(bool reboot);
156
157 /* shutdown/destroy current domain because of an error */
158 void xen_shutdown_fatal_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
159
160 #endif /* QEMU_HW_XEN_COMMON_H */
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