82 lines
2.9 KiB
C
82 lines
2.9 KiB
C
#ifndef QEMU_HW_XEN_PVDEV_H
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#define QEMU_HW_XEN_PVDEV_H
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#include "hw/xen/xen_common.h"
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/* ------------------------------------------------------------- */
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#define XEN_BUFSIZE 1024
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struct XenLegacyDevice;
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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 XenLegacyDevice *xendev);
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int (*init)(struct XenLegacyDevice *xendev);
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int (*initialise)(struct XenLegacyDevice *xendev);
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void (*connected)(struct XenLegacyDevice *xendev);
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void (*event)(struct XenLegacyDevice *xendev);
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void (*disconnect)(struct XenLegacyDevice *xendev);
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int (*free)(struct XenLegacyDevice *xendev);
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void (*backend_changed)(struct XenLegacyDevice *xendev,
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const char *node);
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void (*frontend_changed)(struct XenLegacyDevice *xendev,
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const char *node);
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int (*backend_register)(void);
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};
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struct XenLegacyDevice {
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DeviceState qdev;
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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_handle *evtchndev;
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xengnttab_handle *gnttabdev;
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struct XenDevOps *ops;
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QTAILQ_ENTRY(XenLegacyDevice) next;
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};
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/* ------------------------------------------------------------- */
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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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int xenstore_write_int64(const char *base, const char *node, int64_t 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_read_uint64(const char *base, const char *node, uint64_t *uval);
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void xenstore_update(void *unused);
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const char *xenbus_strstate(enum xenbus_state state);
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void xen_pv_evtchn_event(void *opaque);
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void xen_pv_insert_xendev(struct XenLegacyDevice *xendev);
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void xen_pv_del_xendev(struct XenLegacyDevice *xendev);
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struct XenLegacyDevice *xen_pv_find_xendev(const char *type, int dom, int dev);
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void xen_pv_unbind_evtchn(struct XenLegacyDevice *xendev);
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int xen_pv_send_notify(struct XenLegacyDevice *xendev);
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void xen_pv_printf(struct XenLegacyDevice *xendev, int msg_level,
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const char *fmt, ...) GCC_FMT_ATTR(3, 4);
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#endif /* QEMU_HW_XEN_PVDEV_H */
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