[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"
#include "block_int.h"
#include "blockdev.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       (*connect)(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;

    int                evtchndev;
    int                gnttabdev;

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

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

/* variables */
extern int 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, ...)
    __attribute__ ((format(printf, 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 AL	6	#include "net.h"
2c8b24a3 AL	7	#include "block_int.h"
167e609a	8	#include "blockdev.h"
d94f9486 AL	9
	10	/* ------------------------------------------------------------- */
	11
	12	#define XEN_BUFSIZE 1024
	13
	14	struct XenDevice;
	15
	16	/* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */
	17	#define DEVOPS_FLAG_NEED_GNTDEV 1
	18	/* don't expect frontend doing correct state transitions (aka console quirk) */
	19	#define DEVOPS_FLAG_IGNORE_STATE 2
	20
	21	struct XenDevOps {
	22	size_t size;
	23	uint32_t flags;
	24	void (alloc)(struct XenDevice xendev);
	25	int (init)(struct XenDevice xendev);
	26	int (connect)(struct XenDevice xendev);
	27	void (event)(struct XenDevice xendev);
	28	void (disconnect)(struct XenDevice xendev);
	29	int (free)(struct XenDevice xendev);
	30	void (backend_changed)(struct XenDevice xendev, const char *node);
	31	void (frontend_changed)(struct XenDevice xendev, const char *node);
	32	};
	33
	34	struct XenDevice {
	35	const char *type;
	36	int dom;
	37	int dev;
	38	char name[64];
	39	int debug;
	40
	41	enum xenbus_state be_state;
	42	enum xenbus_state fe_state;
	43	int online;
	44	char be[XEN_BUFSIZE];
	45	char *fe;
	46	char *protocol;
	47	int remote_port;
	48	int local_port;
	49
	50	int evtchndev;
	51	int gnttabdev;
	52
	53	struct XenDevOps *ops;
72cf2d4f	54	QTAILQ_ENTRY(XenDevice) next;
d94f9486 AL	55	};
	56
	57	/* ------------------------------------------------------------- */
	58
	59	/* variables */
	60	extern int xen_xc;
	61	extern struct xs_handle *xenstore;
2c8b24a3	62	extern const char *xen_protocol;
d94f9486 AL	63
	64	/* xenstore helper functions */
	65	int xenstore_write_str(const char base, const char node, const char *val);
	66	int xenstore_write_int(const char base, const char node, int ival);
	67	char xenstore_read_str(const char base, const char *node);
	68	int xenstore_read_int(const char base, const char node, int *ival);
	69
	70	int xenstore_write_be_str(struct XenDevice xendev, const char node, const char *val);
	71	int xenstore_write_be_int(struct XenDevice xendev, const char node, int ival);
	72	char xenstore_read_be_str(struct XenDevice xendev, const char *node);
	73	int xenstore_read_be_int(struct XenDevice xendev, const char node, int *ival);
	74	char xenstore_read_fe_str(struct XenDevice xendev, const char *node);
	75	int xenstore_read_fe_int(struct XenDevice xendev, const char node, int *ival);
	76
	77	const char *xenbus_strstate(enum xenbus_state state);
	78	struct XenDevice xen_be_find_xendev(const char type, int dom, int dev);
	79	void xen_be_check_state(struct XenDevice *xendev);
	80
	81	/* xen backend driver bits */
	82	int xen_be_init(void);
	83	int xen_be_register(const char type, struct XenDevOps ops);
	84	int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state);
	85	int xen_be_bind_evtchn(struct XenDevice *xendev);
	86	void xen_be_unbind_evtchn(struct XenDevice *xendev);
	87	int xen_be_send_notify(struct XenDevice *xendev);
	88	void xen_be_printf(struct XenDevice xendev, int msg_level, const char fmt, ...)
	89	__attribute__ ((format(printf, 3, 4)));
	90
e57dd20b AL	91	/* actual backend drivers */
e57dd20b AL	92	extern struct XenDevOps xen_console_ops; /* xen_console.c */
e7151f83 AL	93	extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */
e7151f83 AL	94	extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */
62d23efa	95	extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */
e613b064	96	extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */
e7151f83 AL	97
e7151f83 AL	98	void xen_init_display(int domid);
e57dd20b	99
2c8b24a3	100	/* configuration (aka xenbus setup) */
28695489	101	void xen_config_cleanup(void);
2c8b24a3 AL	102	int xen_config_dev_blk(DriveInfo *disk);
2c8b24a3 AL	103	int xen_config_dev_nic(NICInfo *nic);
9306acb5 AL	104	int xen_config_dev_vfb(int vdev, const char *type);
	105	int xen_config_dev_vkbd(int vdev);
	106	int xen_config_dev_console(int vdev);
2c8b24a3	107
d94f9486	108	#endif /* QEMU_HW_XEN_BACKEND_H */