[qemu.git] / hw / xen_backend.h

#ifndef QEMU_HW_XEN_BACKEND_H
#define QEMU_HW_XEN_BACKEND_H 1

#include "xen_common.h"
#include "sysemu.h"
#include "net.h"

/* ------------------------------------------------------------- */

#define XEN_BUFSIZE 1024

struct XenDevice;

/* driver uses grant tables  ->  open gntdev device (xendev->gnttabdev) */
#define DEVOPS_FLAG_NEED_GNTDEV   1
/* don't expect frontend doing correct state transitions (aka console quirk) */
#define DEVOPS_FLAG_IGNORE_STATE  2

struct XenDevOps {
    size_t    size;
    uint32_t  flags;
    void      (*alloc)(struct XenDevice *xendev);
    int       (*init)(struct XenDevice *xendev);
    int       (*initialise)(struct XenDevice *xendev);
    void      (*connected)(struct XenDevice *xendev);
    void      (*event)(struct XenDevice *xendev);
    void      (*disconnect)(struct XenDevice *xendev);
    int       (*free)(struct XenDevice *xendev);
    void      (*backend_changed)(struct XenDevice *xendev, const char *node);
    void      (*frontend_changed)(struct XenDevice *xendev, const char *node);
};

struct XenDevice {
    const char         *type;
    int                dom;
    int                dev;
    char               name[64];
    int                debug;

    enum xenbus_state  be_state;
    enum xenbus_state  fe_state;
    int                online;
    char               be[XEN_BUFSIZE];
    char               *fe;
    char               *protocol;
    int                remote_port;
    int                local_port;

    XenEvtchn          evtchndev;
    XenGnttab          gnttabdev;

    struct XenDevOps   *ops;
    QTAILQ_ENTRY(XenDevice) next;
};

/* ------------------------------------------------------------- */

/* variables */
extern XenXC xen_xc;
extern struct xs_handle *xenstore;
extern const char *xen_protocol;

/* xenstore helper functions */
int xenstore_write_str(const char *base, const char *node, const char *val);
int xenstore_write_int(const char *base, const char *node, int ival);
char *xenstore_read_str(const char *base, const char *node);
int xenstore_read_int(const char *base, const char *node, int *ival);

int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val);
int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival);
char *xenstore_read_be_str(struct XenDevice *xendev, const char *node);
int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival);
char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node);
int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival);

const char *xenbus_strstate(enum xenbus_state state);
struct XenDevice *xen_be_find_xendev(const char *type, int dom, int dev);
void xen_be_check_state(struct XenDevice *xendev);

/* xen backend driver bits */
int xen_be_init(void);
int xen_be_register(const char *type, struct XenDevOps *ops);
int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state);
int xen_be_bind_evtchn(struct XenDevice *xendev);
void xen_be_unbind_evtchn(struct XenDevice *xendev);
int xen_be_send_notify(struct XenDevice *xendev);
void xen_be_printf(struct XenDevice *xendev, int msg_level, const char *fmt, ...)
    GCC_FMT_ATTR(3, 4);

/* actual backend drivers */
extern struct XenDevOps xen_console_ops;      /* xen_console.c     */
extern struct XenDevOps xen_kbdmouse_ops;     /* xen_framebuffer.c */
extern struct XenDevOps xen_framebuffer_ops;  /* xen_framebuffer.c */
extern struct XenDevOps xen_blkdev_ops;       /* xen_disk.c        */
extern struct XenDevOps xen_netdev_ops;       /* xen_nic.c         */

void xen_init_display(int domid);

/* configuration (aka xenbus setup) */
void xen_config_cleanup(void);
int xen_config_dev_blk(DriveInfo *disk);
int xen_config_dev_nic(NICInfo *nic);
int xen_config_dev_vfb(int vdev, const char *type);
int xen_config_dev_vkbd(int vdev);
int xen_config_dev_console(int vdev);

#endif /* QEMU_HW_XEN_BACKEND_H */
Commit	Line	Data
d94f9486 AL	1	#ifndef QEMU_HW_XEN_BACKEND_H
	2	#define QEMU_HW_XEN_BACKEND_H 1
	3
	4	#include "xen_common.h"
62d23efa	5	#include "sysemu.h"
2c8b24a3	6	#include "net.h"
d94f9486 AL	7
	8	/* ------------------------------------------------------------- */
	9
	10	#define XEN_BUFSIZE 1024
	11
	12	struct XenDevice;
	13
	14	/* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */
	15	#define DEVOPS_FLAG_NEED_GNTDEV 1
	16	/* don't expect frontend doing correct state transitions (aka console quirk) */
	17	#define DEVOPS_FLAG_IGNORE_STATE 2
	18
	19	struct XenDevOps {
	20	size_t size;
	21	uint32_t flags;
	22	void (alloc)(struct XenDevice xendev);
	23	int (init)(struct XenDevice xendev);
384087b2 JH	24	int (initialise)(struct XenDevice xendev);
384087b2 JH	25	void (connected)(struct XenDevice xendev);
d94f9486 AL	26	void (event)(struct XenDevice xendev);
	27	void (disconnect)(struct XenDevice xendev);
	28	int (free)(struct XenDevice xendev);
	29	void (backend_changed)(struct XenDevice xendev, const char *node);
	30	void (frontend_changed)(struct XenDevice xendev, const char *node);
	31	};
	32
	33	struct XenDevice {
	34	const char *type;
	35	int dom;
	36	int dev;
	37	char name[64];
	38	int debug;
	39
	40	enum xenbus_state be_state;
	41	enum xenbus_state fe_state;
	42	int online;
	43	char be[XEN_BUFSIZE];
	44	char *fe;
	45	char *protocol;
	46	int remote_port;
	47	int local_port;
	48
d5b93ddf AP	49	XenEvtchn evtchndev;
d5b93ddf AP	50	XenGnttab gnttabdev;
d94f9486 AL	51
d94f9486 AL	52	struct XenDevOps *ops;
72cf2d4f	53	QTAILQ_ENTRY(XenDevice) next;
d94f9486 AL	54	};
	55
	56	/* ------------------------------------------------------------- */
	57
	58	/* variables */
d5b93ddf	59	extern XenXC xen_xc;
d94f9486	60	extern struct xs_handle *xenstore;
2c8b24a3	61	extern const char *xen_protocol;
d94f9486 AL	62
	63	/* xenstore helper functions */
	64	int xenstore_write_str(const char base, const char node, const char *val);
	65	int xenstore_write_int(const char base, const char node, int 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
	69	int xenstore_write_be_str(struct XenDevice xendev, const char node, const char *val);
	70	int xenstore_write_be_int(struct XenDevice xendev, const char node, int ival);
	71	char xenstore_read_be_str(struct XenDevice xendev, const char *node);
	72	int xenstore_read_be_int(struct XenDevice xendev, const char node, int *ival);
	73	char xenstore_read_fe_str(struct XenDevice xendev, const char *node);
	74	int xenstore_read_fe_int(struct XenDevice xendev, const char node, int *ival);
	75
	76	const char *xenbus_strstate(enum xenbus_state state);
	77	struct XenDevice xen_be_find_xendev(const char type, int dom, int dev);
	78	void xen_be_check_state(struct XenDevice *xendev);
	79
	80	/* xen backend driver bits */
	81	int xen_be_init(void);
	82	int xen_be_register(const char type, struct XenDevOps ops);
	83	int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state);
	84	int xen_be_bind_evtchn(struct XenDevice *xendev);
	85	void xen_be_unbind_evtchn(struct XenDevice *xendev);
	86	int xen_be_send_notify(struct XenDevice *xendev);
	87	void xen_be_printf(struct XenDevice xendev, int msg_level, const char fmt, ...)
e5924d89	88	GCC_FMT_ATTR(3, 4);
d94f9486	89
e57dd20b AL	90	/* actual backend drivers */
e57dd20b AL	91	extern struct XenDevOps xen_console_ops; /* xen_console.c */
e7151f83 AL	92	extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */
e7151f83 AL	93	extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */
62d23efa	94	extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */
e613b064	95	extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */
e7151f83 AL	96
e7151f83 AL	97	void xen_init_display(int domid);
e57dd20b	98
2c8b24a3	99	/* configuration (aka xenbus setup) */
28695489	100	void xen_config_cleanup(void);
2c8b24a3 AL	101	int xen_config_dev_blk(DriveInfo *disk);
2c8b24a3 AL	102	int xen_config_dev_nic(NICInfo *nic);
9306acb5 AL	103	int xen_config_dev_vfb(int vdev, const char *type);
	104	int xen_config_dev_vkbd(int vdev);
	105	int xen_config_dev_console(int vdev);
2c8b24a3	106
d94f9486	107	#endif /* QEMU_HW_XEN_BACKEND_H */