d3256f88d9
There's no need to force the user to assign a vdev. We can automatically assign one, starting at xvda and searching until we find the first disk name that's unused. This means we can now allow '-drive if=xen,file=xxx' to work without an explicit separate -driver argument, just like if=virtio. Rip out the legacy handling from the xenpv machine, which was scribbling over any disks configured by the toolstack, and didn't work with anything but raw images. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Acked-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Paul Durrant <paul@xen.org>
90 lines
3.5 KiB
C
90 lines
3.5 KiB
C
#ifndef HW_XEN_LEGACY_BACKEND_H
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#define HW_XEN_LEGACY_BACKEND_H
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#include "hw/xen/xen_backend_ops.h"
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#include "hw/xen/xen_pvdev.h"
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#include "net/net.h"
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#include "qom/object.h"
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#define TYPE_XENSYSDEV "xen-sysdev"
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#define TYPE_XENSYSBUS "xen-sysbus"
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#define TYPE_XENBACKEND "xen-backend"
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typedef struct XenLegacyDevice XenLegacyDevice;
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DECLARE_INSTANCE_CHECKER(XenLegacyDevice, XENBACKEND,
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TYPE_XENBACKEND)
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/* variables */
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extern struct qemu_xs_handle *xenstore;
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extern const char *xen_protocol;
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extern DeviceState *xen_sysdev;
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extern BusState *xen_sysbus;
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int xenstore_mkdir(char *path, int p);
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int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node,
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const char *val);
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int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node,
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int ival);
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int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node,
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int64_t ival);
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char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node);
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int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node,
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int *ival);
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char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node);
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int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node,
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int *ival);
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int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node,
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uint64_t *uval);
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void xen_be_check_state(struct XenLegacyDevice *xendev);
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/* xen backend driver bits */
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void 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 XenLegacyDevice *xendev, enum xenbus_state state);
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int xen_be_bind_evtchn(struct XenLegacyDevice *xendev);
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void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev,
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unsigned int nr_refs);
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void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs,
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unsigned int nr_refs, int prot);
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void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr,
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uint32_t *refs, unsigned int nr_refs);
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int xen_be_copy_grant_refs(struct XenLegacyDevice *xendev,
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bool to_domain, XenGrantCopySegment segs[],
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unsigned int nr_segs);
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static inline void *xen_be_map_grant_ref(struct XenLegacyDevice *xendev,
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uint32_t ref, int prot)
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{
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return xen_be_map_grant_refs(xendev, &ref, 1, prot);
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}
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static inline void xen_be_unmap_grant_ref(struct XenLegacyDevice *xendev,
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void *ptr, uint32_t ref)
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{
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return xen_be_unmap_grant_refs(xendev, ptr, &ref, 1);
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}
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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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#ifdef CONFIG_VIRTFS
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extern struct XenDevOps xen_9pfs_ops; /* xen-9p-backend.c */
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#endif
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extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */
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#ifdef CONFIG_USB_LIBUSB
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extern struct XenDevOps xen_usb_ops; /* xen-usb.c */
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#endif
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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_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 /* HW_XEN_LEGACY_BACKEND_H */
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