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xen: add an own bus for xen backend devices 

Add a bus for Xen backend devices in order to be able to establish a
dedicated device path for pluggable devices.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Juergen Gross 2016-11-22 07:10:56 +01:00 committed by Stefano Stabellini
parent b85f9dfdb1
commit 873d57abba
2 changed files with 20 additions and 3 deletions
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19
hw/xen/xen_backend.c
View File

@ -29,14 +29,14 @@
#include "hw/sysbus.h" #include "hw/sysbus.h"
#include "sysemu/char.h" #include "sysemu/char.h"
#include "qemu/log.h" #include "qemu/log.h"
#include "qapi/error.h"
#include "hw/xen/xen_backend.h" #include "hw/xen/xen_backend.h"
#include "hw/xen/xen_pvdev.h" #include "hw/xen/xen_pvdev.h"
#include <xen/grant_table.h> #include <xen/grant_table.h>
#define TYPE_XENSYSDEV "xensysdev"
DeviceState *xen_sysdev; DeviceState *xen_sysdev;
BusState *xen_sysbus;
/* ------------------------------------------------------------- */ /* ------------------------------------------------------------- */
@ -528,6 +528,8 @@ int xen_be_init(void)
xen_sysdev = qdev_create(NULL, TYPE_XENSYSDEV); xen_sysdev = qdev_create(NULL, TYPE_XENSYSDEV);
qdev_init_nofail(xen_sysdev); qdev_init_nofail(xen_sysdev);
xen_sysbus = qbus_create(TYPE_XENSYSBUS, DEVICE(xen_sysdev), "xen-sysbus");
qbus_set_bus_hotplug_handler(xen_sysbus, &error_abort);
return 0; return 0;
@ -586,6 +588,15 @@ int xen_be_bind_evtchn(struct XenDevice *xendev)
} }
static const TypeInfo xensysbus_info = {
.name = TYPE_XENSYSBUS,
.parent = TYPE_BUS,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
{ }
}
};
static int xen_sysdev_init(SysBusDevice *dev) static int xen_sysdev_init(SysBusDevice *dev)
{ {
return 0; return 0;
@ -602,6 +613,7 @@ static void xen_sysdev_class_init(ObjectClass *klass, void *data)
k->init = xen_sysdev_init; k->init = xen_sysdev_init;
dc->props = xen_sysdev_properties; dc->props = xen_sysdev_properties;
dc->bus_type = TYPE_XENSYSBUS;
} }
static const TypeInfo xensysdev_info = { static const TypeInfo xensysdev_info = {
@ -613,7 +625,8 @@ static const TypeInfo xensysdev_info = {
static void xenbe_register_types(void) static void xenbe_register_types(void)
{ {
type_register_static(&xensysbus_info);
type_register_static(&xensysdev_info); type_register_static(&xensysdev_info);
} }
type_init(xenbe_register_types); type_init(xenbe_register_types)

4
include/hw/xen/xen_backend.h
View File

@ -6,12 +6,16 @@
#include "sysemu/sysemu.h" #include "sysemu/sysemu.h"
#include "net/net.h" #include "net/net.h"
#define TYPE_XENSYSDEV "xen-sysdev"
#define TYPE_XENSYSBUS "xen-sysbus"
/* variables */ /* variables */
extern xc_interface *xen_xc; extern xc_interface *xen_xc;
extern xenforeignmemory_handle *xen_fmem; extern xenforeignmemory_handle *xen_fmem;
extern struct xs_handle *xenstore; extern struct xs_handle *xenstore;
extern const char *xen_protocol; extern const char *xen_protocol;
extern DeviceState *xen_sysdev; extern DeviceState *xen_sysdev;
extern BusState *xen_sysbus;
int xenstore_mkdir(char *path, int p); int xenstore_mkdir(char *path, int p);
int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val); int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val);