root / hw / xen_backend.h @ e6eaabeb
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#ifndef QEMU_HW_XEN_BACKEND_H
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#define QEMU_HW_XEN_BACKEND_H 1 |
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#include "xen_common.h" |
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#include "sysemu.h" |
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#include "net.h" |
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#include "net/hub.h" |
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/* ------------------------------------------------------------- */
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#define XEN_BUFSIZE 1024 |
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struct XenDevice;
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/* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */
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#define DEVOPS_FLAG_NEED_GNTDEV 1 |
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/* don't expect frontend doing correct state transitions (aka console quirk) */
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#define DEVOPS_FLAG_IGNORE_STATE 2 |
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struct XenDevOps {
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size_t size; |
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uint32_t flags; |
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void (*alloc)(struct XenDevice *xendev); |
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int (*init)(struct XenDevice *xendev); |
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int (*initialise)(struct XenDevice *xendev); |
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void (*connected)(struct XenDevice *xendev); |
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void (*event)(struct XenDevice *xendev); |
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void (*disconnect)(struct XenDevice *xendev); |
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int (*free)(struct XenDevice *xendev); |
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void (*backend_changed)(struct XenDevice *xendev, const char *node); |
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void (*frontend_changed)(struct XenDevice *xendev, const char *node); |
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}; |
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struct XenDevice {
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const char *type; |
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int dom;
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int dev;
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char name[64]; |
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int debug;
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enum xenbus_state be_state;
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enum xenbus_state fe_state;
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int online;
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char be[XEN_BUFSIZE];
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char *fe;
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char *protocol;
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int remote_port;
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int local_port;
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XenEvtchn evtchndev; |
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XenGnttab gnttabdev; |
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struct XenDevOps *ops;
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QTAILQ_ENTRY(XenDevice) next; |
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}; |
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/* ------------------------------------------------------------- */
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/* variables */
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extern XenXC xen_xc;
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extern struct xs_handle *xenstore; |
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extern const char *xen_protocol; |
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/* xenstore helper functions */
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int xenstore_write_str(const char *base, const char *node, const char *val); |
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int xenstore_write_int(const char *base, const char *node, int ival); |
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char *xenstore_read_str(const char *base, const char *node); |
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int xenstore_read_int(const char *base, const char *node, int *ival); |
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int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val); |
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int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival); |
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char *xenstore_read_be_str(struct XenDevice *xendev, const char *node); |
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int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival); |
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char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node); |
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int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival); |
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const char *xenbus_strstate(enum xenbus_state state); |
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struct XenDevice *xen_be_find_xendev(const char *type, int dom, int dev); |
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void xen_be_check_state(struct XenDevice *xendev); |
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/* xen backend driver bits */
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int xen_be_init(void); |
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int xen_be_register(const char *type, struct XenDevOps *ops); |
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int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state); |
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int xen_be_bind_evtchn(struct XenDevice *xendev); |
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void xen_be_unbind_evtchn(struct XenDevice *xendev); |
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int xen_be_send_notify(struct XenDevice *xendev); |
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void xen_be_printf(struct XenDevice *xendev, int msg_level, const char *fmt, ...) |
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GCC_FMT_ATTR(3, 4); |
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/* actual backend drivers */
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extern struct XenDevOps xen_console_ops; /* xen_console.c */ |
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extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */ |
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extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */ |
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extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */ |
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extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */ |
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void xen_init_display(int domid); |
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/* configuration (aka xenbus setup) */
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void xen_config_cleanup(void); |
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int xen_config_dev_blk(DriveInfo *disk);
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int xen_config_dev_nic(NICInfo *nic);
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int xen_config_dev_vfb(int vdev, const char *type); |
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int xen_config_dev_vkbd(int vdev); |
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int xen_config_dev_console(int vdev); |
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#endif /* QEMU_HW_XEN_BACKEND_H */ |