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xen: add pvUSB backend

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Add a backend for para-virtualized USB devices for xen domains.

The backend is using host-libusb to forward USB requests from a
domain via libusb to the real device(s) passed through.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Message-id: 1463062421-613-4-git-send-email-jgross@suse.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Juergen Gross 2016-05-12 16:13:41 +02:00 committed by Gerd Hoffmann
parent 637c53ffcb
commit 816ac92ef7
5 changed files with 1092 additions and 0 deletions
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4
hw/usb/Makefile.objs
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@ -38,3 +38,7 @@ common-obj-$(CONFIG_USB_REDIR) += redirect.o quirks.o
# usb pass-through
common-obj-y += $(patsubst %,host-%.o,$(HOST_USB))
ifeq ($(CONFIG_USB_LIBUSB),y)
common-obj-$(CONFIG_XEN_BACKEND) += xen-usb.o
endif

1080
hw/usb/xen-usb.c Normal file
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File diff suppressed because it is too large Load Diff

3
hw/xenpv/xen_machine_pv.c
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@ -80,6 +80,9 @@ static void xen_init_pv(MachineState *machine)
xen_be_register("vfb", &xen_framebuffer_ops);
xen_be_register("qdisk", &xen_blkdev_ops);
xen_be_register("qnic", &xen_netdev_ops);
#ifdef CONFIG_USB_LIBUSB
xen_be_register("qusb", &xen_usb_ops);
#endif
/* configure framebuffer */
if (xenfb_enabled) {

3
include/hw/xen/xen_backend.h
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@ -101,6 +101,9 @@ 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 */
extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */
#ifdef CONFIG_USB_LIBUSB
extern struct XenDevOps xen_usb_ops; /* xen-usb.c */
#endif
void xen_init_display(int domid);

2
include/hw/xen/xen_common.h
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@ -49,6 +49,8 @@ typedef xc_gnttab xengnttab_handle;
#define xengnttab_unmap(h, a, n) xc_gnttab_munmap(h, a, n)
#define xengnttab_map_grant_refs(h, c, d, r, p) \
xc_gnttab_map_grant_refs(h, c, d, r, p)
#define xengnttab_map_domain_grant_refs(h, c, d, r, p) \
xc_gnttab_map_domain_grant_refs(h, c, d, r, p)
#define xenforeignmemory_open(l, f) xen_xc