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xen: Create a new file xen_pvdev.c

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The purpose of the new file is to store generic functions shared by frontend
and backends such as xenstore operations, xendevs.

Signed-off-by: Quan Xu <quan.xu@intel.com>
Signed-off-by: Emil Condrea <emilcondrea@gmail.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Quan Xu <xuquan8@huawei.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
This commit is contained in:
Emil Condrea 2016-10-25 08:50:09 +03:00 • committed by Stefano Stabellini
parent b9730c5b4e
commit f0021dba62
5 changed files with 222 additions and 189 deletions
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64
include/hw/xen/xen_backend.h
View file

@ -2,60 +2,10 @@
#define QEMU_HW_XEN_BACKEND_H
#include "hw/xen/xen_common.h"
#include "hw/xen/xen_pvdev.h"
#include "sysemu/sysemu.h"
#include "net/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);
int (*backend_register)(void);
};
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_handle *evtchndev;
xengnttab_handle *gnttabdev;
struct XenDevOps *ops;
QTAILQ_ENTRY(XenDevice) next;
};
/* ------------------------------------------------------------- */
/* variables */
extern xc_interface *xen_xc;
extern xenforeignmemory_handle *xen_fmem;
@ -63,14 +13,7 @@ extern struct xs_handle *xenstore;
extern const char *xen_protocol;
extern DeviceState *xen_sysdev;
/* xenstore helper functions */
int xenstore_mkdir(char *path, int p);
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);
int xenstore_write_int64(const char *base, const char *node, int64_t 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);
int xenstore_write_be_int64(struct XenDevice *xendev, const char *node, int64_t ival);
@ -78,11 +21,9 @@ 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);
int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
int xenstore_read_fe_uint64(struct XenDevice *xendev, const char *node,
uint64_t *uval);
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);
@ -94,9 +35,6 @@ 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 */