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https://gitlab.com/qemu-project/qemu
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e2abfe5ec6
This header is now only for native Xen code, not PV backends that may be used in Xen emulation. Since the toolstack libraries may depend on the specific version of Xen headers that they pull in (and will set the __XEN_TOOLS__ macro to enable internal definitions that they depend on), the rule is that xen_native.h (and thus the toolstack library headers) must be included *before* any of the headers in include/hw/xen/interface. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
84 lines
2.9 KiB
C
84 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/qdev-core.h"
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#include "hw/xen/xen_backend_ops.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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struct qemu_xs_watch *watch;
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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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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, ...) G_GNUC_PRINTF(3, 4);
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#endif /* QEMU_HW_XEN_PVDEV_H */
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