d7234f4d7e
All of these users have global state so we really don't see a benefit from exit_notifier. However, using exit_notifier means that there's one less justification for having global state in the first place. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
108 lines
3.8 KiB
C
108 lines
3.8 KiB
C
#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"
|
|
|
|
/* ------------------------------------------------------------- */
|
|
|
|
#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(Notifier *notifier);
|
|
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 */
|