2 * Copyright (C) 2014 Citrix Systems UK Ltd.
4 * This work is licensed under the terms of the GNU GPL, version 2. See
5 * the COPYING file in the top-level directory.
7 * Contributions after 2012-01-13 are licensed under the terms of the
8 * GNU GPL, version 2 or (at your option) any later version.
11 #include "qemu/osdep.h"
12 #include "qemu/error-report.h"
13 #include "qemu/module.h"
14 #include "qapi/error.h"
15 #include "hw/xen/xen-legacy-backend.h"
16 #include "hw/xen/xen_pt.h"
17 #include "chardev/char.h"
18 #include "sysemu/accel.h"
19 #include "sysemu/runstate.h"
20 #include "migration/misc.h"
21 #include "migration/global_state.h"
26 #define DPRINTF(fmt, ...) \
27 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
29 #define DPRINTF(fmt, ...) \
34 xenforeignmemory_handle
*xen_fmem
;
35 xendevicemodel_handle
*xen_dmod
;
37 static int store_dev_info(int domid
, Chardev
*cs
, const char *string
)
39 struct xs_handle
*xs
= NULL
;
45 /* Only continue if we're talking to a pty. */
46 if (!CHARDEV_IS_PTY(cs
)) {
49 pts
= cs
->filename
+ 4;
51 /* We now have everything we need to set the xenstore entry. */
54 fprintf(stderr
, "Could not contact XenStore\n");
58 path
= xs_get_domain_path(xs
, domid
);
60 fprintf(stderr
, "xs_get_domain_path() error\n");
63 newpath
= realloc(path
, (strlen(path
) + strlen(string
) +
65 if (newpath
== NULL
) {
66 fprintf(stderr
, "realloc error\n");
73 if (!xs_write(xs
, XBT_NULL
, path
, pts
, strlen(pts
))) {
74 fprintf(stderr
, "xs_write for '%s' fail", string
);
86 void xenstore_store_pv_console_info(int i
, Chardev
*chr
)
89 store_dev_info(xen_domid
, chr
, "/console");
92 snprintf(buf
, sizeof(buf
), "/device/console/%d", i
);
93 store_dev_info(xen_domid
, chr
, buf
);
98 static void xenstore_record_dm_state(struct xs_handle
*xs
, const char *state
)
103 error_report("xenstore connection not initialized");
107 snprintf(path
, sizeof (path
), "device-model/%u/state", xen_domid
);
109 * This call may fail when running restricted so don't make it fatal in
110 * that case. Toolstacks should instead use QMP to listen for state changes.
112 if (!xs_write(xs
, XBT_NULL
, path
, state
, strlen(state
)) &&
113 !xen_domid_restrict
) {
114 error_report("error recording dm state");
120 static void xen_change_state_handler(void *opaque
, int running
,
124 /* record state running */
125 xenstore_record_dm_state(xenstore
, "running");
129 static bool xen_get_igd_gfx_passthru(Object
*obj
, Error
**errp
)
131 return has_igd_gfx_passthru
;
134 static void xen_set_igd_gfx_passthru(Object
*obj
, bool value
, Error
**errp
)
136 has_igd_gfx_passthru
= value
;
139 static void xen_setup_post(MachineState
*ms
, AccelState
*accel
)
143 if (xen_domid_restrict
) {
144 rc
= xen_restrict(xen_domid
);
146 perror("xen: failed to restrict");
152 static int xen_init(MachineState
*ms
)
154 xen_xc
= xc_interface_open(0, 0, 0);
155 if (xen_xc
== NULL
) {
156 xen_pv_printf(NULL
, 0, "can't open xen interface\n");
159 xen_fmem
= xenforeignmemory_open(0, 0);
160 if (xen_fmem
== NULL
) {
161 xen_pv_printf(NULL
, 0, "can't open xen fmem interface\n");
162 xc_interface_close(xen_xc
);
165 xen_dmod
= xendevicemodel_open(0, 0);
166 if (xen_dmod
== NULL
) {
167 xen_pv_printf(NULL
, 0, "can't open xen devicemodel interface\n");
168 xenforeignmemory_close(xen_fmem
);
169 xc_interface_close(xen_xc
);
172 qemu_add_vm_change_state_handler(xen_change_state_handler
, NULL
);
176 static void xen_accel_class_init(ObjectClass
*oc
, void *data
)
178 AccelClass
*ac
= ACCEL_CLASS(oc
);
179 static GlobalProperty compat
[] = {
180 { "migration", "store-global-state", "off" },
181 { "migration", "send-configuration", "off" },
182 { "migration", "send-section-footer", "off" },
186 ac
->init_machine
= xen_init
;
187 ac
->setup_post
= xen_setup_post
;
188 ac
->allowed
= &xen_allowed
;
189 ac
->compat_props
= g_ptr_array_new();
191 compat_props_add(ac
->compat_props
, compat
, G_N_ELEMENTS(compat
));
193 object_class_property_add_bool(oc
, "igd-passthru",
194 xen_get_igd_gfx_passthru
, xen_set_igd_gfx_passthru
,
196 object_class_property_set_description(oc
, "igd-passthru",
197 "Set on/off to enable/disable igd passthrou", &error_abort
);
200 #define TYPE_XEN_ACCEL ACCEL_CLASS_NAME("xen")
202 static const TypeInfo xen_accel_type
= {
203 .name
= TYPE_XEN_ACCEL
,
204 .parent
= TYPE_ACCEL
,
205 .class_init
= xen_accel_class_init
,
208 static void xen_type_init(void)
210 type_register_static(&xen_accel_type
);
213 type_init(xen_type_init
);