xen_pvdev.h · samitouri/QOSamiQemu

Code Commits Issues Pulls Sessions CI/CD

master

h 83 lines 2.87 KB

Raw

1	#ifndef QEMU_HW_XEN_PVDEV_H
2	#define QEMU_HW_XEN_PVDEV_H
3
4	#include "hw/core/sysbus.h"
5	#include "hw/xen/xen_backend_ops.h"
6
7	/* ------------------------------------------------------------- */
8
9	#define XEN_BUFSIZE 1024
10
11	struct XenLegacyDevice;
12
13	/* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */
14	#define DEVOPS_FLAG_NEED_GNTDEV 1
15	/* don't expect frontend doing correct state transitions (aka console quirk) */
16	#define DEVOPS_FLAG_IGNORE_STATE 2
17
18	struct XenDevOps {
19	size_t size;
20	uint32_t flags;
21	void (alloc)(struct XenLegacyDevice xendev);
22	int (init)(struct XenLegacyDevice xendev);
23	int (initialise)(struct XenLegacyDevice xendev);
24	void (connected)(struct XenLegacyDevice xendev);
25	void (event)(struct XenLegacyDevice xendev);
26	void (disconnect)(struct XenLegacyDevice xendev);
27	int (free)(struct XenLegacyDevice xendev);
28	void (backend_changed)(struct XenLegacyDevice xendev,
29	const char *node);
30	void (frontend_changed)(struct XenLegacyDevice xendev,
31	const char *node);
32	};
33
34	struct XenLegacyDevice {
35	SysBusDevice parent_obj;
36
37	const char *type;
38	int dom;
39	int dev;
40	char name[64];
41	int debug;
42
43	struct qemu_xs_watch *watch;
44	enum xenbus_state be_state;
45	enum xenbus_state fe_state;
46	int online;
47	char be[XEN_BUFSIZE];
48	char *fe;
49	char *protocol;
50	int remote_port;
51	int local_port;
52
53	xenevtchn_handle *evtchndev;
54	xengnttab_handle *gnttabdev;
55
56	const struct XenDevOps *ops;
57	QTAILQ_ENTRY(XenLegacyDevice) next;
58	};
59
60	/* ------------------------------------------------------------- */
61
62	/* xenstore helper functions */
63	int xenstore_write_str(const char base, const char node, const char *val);
64	int xenstore_write_int(const char base, const char node, int ival);
65	int xenstore_write_int64(const char base, const char node, int64_t ival);
66	char xenstore_read_str(const char base, const char *node);
67	int xenstore_read_int(const char base, const char node, int *ival);
68	int xenstore_read_uint64(const char base, const char node, uint64_t *uval);
69
70	const char *xenbus_strstate(enum xenbus_state state);
71
72	void xen_pv_evtchn_event(void *opaque);
73	void xen_pv_insert_xendev(struct XenLegacyDevice *xendev);
74	void xen_pv_del_xendev(struct XenLegacyDevice *xendev);
75	struct XenLegacyDevice xen_pv_find_xendev(const char type, int dom, int dev);
76
77	void xen_pv_unbind_evtchn(struct XenLegacyDevice *xendev);
78	int xen_pv_send_notify(struct XenLegacyDevice *xendev);
79
80	void xen_pv_printf(struct XenLegacyDevice *xendev, int msg_level,
81	const char *fmt, ...) G_GNUC_PRINTF(3, 4);
82
83	#endif /* QEMU_HW_XEN_PVDEV_H */