diff options
Diffstat (limited to 'include/hw/xen/xen-legacy-backend.h')
-rw-r--r-- | include/hw/xen/xen-legacy-backend.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/include/hw/xen/xen-legacy-backend.h b/include/hw/xen/xen-legacy-backend.h new file mode 100644 index 0000000000..20cb47b5bf --- /dev/null +++ b/include/hw/xen/xen-legacy-backend.h @@ -0,0 +1,104 @@ +#ifndef QEMU_HW_XEN_BACKEND_H +#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 TYPE_XENSYSDEV "xen-sysdev" +#define TYPE_XENSYSBUS "xen-sysbus" +#define TYPE_XENBACKEND "xen-backend" + +#define XENBACKEND_DEVICE(obj) \ + OBJECT_CHECK(XenLegacyDevice, (obj), TYPE_XENBACKEND) + +/* variables */ +extern struct xs_handle *xenstore; +extern const char *xen_protocol; +extern DeviceState *xen_sysdev; +extern BusState *xen_sysbus; + +int xenstore_mkdir(char *path, int p); +int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node, + const char *val); +int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node, + int ival); +int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node, + int64_t ival); +char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node); +int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node, + int *ival); +void xenstore_update_fe(char *watch, struct XenLegacyDevice *xendev); +void xenstore_update_be(char *watch, char *type, int dom, + struct XenDevOps *ops); +char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node); +int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node, + int *ival); +int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node, + uint64_t *uval); + +void xen_be_check_state(struct XenLegacyDevice *xendev); + +/* xen backend driver bits */ +int xen_be_init(void); +void xen_be_register_common(void); +int xen_be_register(const char *type, struct XenDevOps *ops); +int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state); +int xen_be_bind_evtchn(struct XenLegacyDevice *xendev); +void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev, + unsigned int nr_refs); +void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs, + unsigned int nr_refs, int prot); +void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr, + unsigned int nr_refs); + +typedef struct XenGrantCopySegment { + union { + void *virt; + struct { + uint32_t ref; + off_t offset; + } foreign; + } source, dest; + size_t len; +} XenGrantCopySegment; + +int xen_be_copy_grant_refs(struct XenLegacyDevice *xendev, + bool to_domain, XenGrantCopySegment segs[], + unsigned int nr_segs); + +static inline void *xen_be_map_grant_ref(struct XenLegacyDevice *xendev, + uint32_t ref, int prot) +{ + return xen_be_map_grant_refs(xendev, &ref, 1, prot); +} + +static inline void xen_be_unmap_grant_ref(struct XenLegacyDevice *xendev, + void *ptr) +{ + return xen_be_unmap_grant_refs(xendev, ptr, 1); +} + +/* 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 */ +#ifdef CONFIG_VIRTFS +extern struct XenDevOps xen_9pfs_ops; /* xen-9p-backend.c */ +#endif +extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */ +#ifdef CONFIG_USB_LIBUSB +extern struct XenDevOps xen_usb_ops; /* xen-usb.c */ +#endif + +/* configuration (aka xenbus setup) */ +void xen_config_cleanup(void); +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 */ |