From 4bac07c993d03434ea902d3d4290d9e45944b66c Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Tue, 17 Jul 2007 18:37:06 -0700 Subject: xen: add the Xenbus sysfs and virtual device hotplug driver This communicates with the machine control software via a registry residing in a controlling virtual machine. This allows dynamic creation, destruction and modification of virtual device configurations (network devices, block devices and CPUS, to name some examples). [ Greg, would you mind giving this a review? Thanks -J ] Signed-off-by: Ian Pratt Signed-off-by: Christian Limpach Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Chris Wright Cc: Greg KH --- drivers/xen/xenbus/xenbus_comms.h | 46 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 drivers/xen/xenbus/xenbus_comms.h (limited to 'drivers/xen/xenbus/xenbus_comms.h') diff --git a/drivers/xen/xenbus/xenbus_comms.h b/drivers/xen/xenbus/xenbus_comms.h new file mode 100644 index 000000000000..c21db7513736 --- /dev/null +++ b/drivers/xen/xenbus/xenbus_comms.h @@ -0,0 +1,46 @@ +/* + * Private include for xenbus communications. + * + * Copyright (C) 2005 Rusty Russell, IBM Corporation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation; or, when distributed + * separately from the Linux kernel or incorporated into other + * software packages, subject to the following license: + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this source file (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, modify, + * merge, publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#ifndef _XENBUS_COMMS_H +#define _XENBUS_COMMS_H + +int xs_init(void); +int xb_init_comms(void); + +/* Low level routines. */ +int xb_write(const void *data, unsigned len); +int xb_read(void *data, unsigned len); +int xb_data_to_read(void); +int xb_wait_for_data_to_read(void); +int xs_input_avail(void); +extern struct xenstore_domain_interface *xen_store_interface; +extern int xen_store_evtchn; + +#endif /* _XENBUS_COMMS_H */ -- cgit v1.2.1