/* visorchipset.h
*
* Copyright (C) 2010 - 2015 UNISYS CORPORATION
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for more
* details.
*/
#ifndef __VISORCHIPSET_H__
#define __VISORCHIPSET_H__
#include <linux/uuid.h>
#include "controlvmchannel.h"
#include "vbusdeviceinfo.h"
#include "vbushelper.h"
/* These functions will be called from within visorchipset when certain
* events happen. (The implementation of these functions is outside of
* visorchipset.)
*/
struct visorchipset_busdev_notifiers {
void (*bus_create)(struct visor_device *bus_info);
void (*bus_destroy)(struct visor_device *bus_info);
void (*device_create)(struct visor_device *bus_info);
void (*device_destroy)(struct visor_device *bus_info);
void (*device_pause)(struct visor_device *bus_info);
void (*device_resume)(struct visor_device *bus_info);
};
/* These functions live inside visorchipset, and will be called to indicate
* responses to specific events (by code outside of visorchipset).
* For now, the value for each response is simply either:
* 0 = it worked
* -1 = it failed
*/
struct visorchipset_busdev_responders {
void (*bus_create)(struct visor_device *p, int response);
void (*bus_destroy)(struct visor_device *p, int response);
void (*device_create)(struct visor_device *p, int response);
void (*device_destroy)(struct visor_device *p, int response);
void (*device_pause)(struct visor_device *p, int response);
void (*device_resume)(struct visor_device *p, int response);
};
/** Register functions (in the bus driver) to get called by visorchipset
* whenever a bus or device appears for which this guest is to be the
* client for. visorchipset will fill in <responders>, to indicate
* functions the bus driver should call to indicate message responses.
*/
void
visorchipset_register_busdev(
struct visorchipset_busdev_notifiers *notifiers,
struct visorchipset_busdev_responders *responders,
struct ultra_vbus_deviceinfo *driver_info);
/* visorbus init and exit functions */
int visorbus_init(void);
void visorbus_exit(void);
/* Visorchannel access functions */
/* Note that for visorchannel_create()
* <channel_bytes> and <guid> arguments may be 0 if we are a channel CLIENT.
* In this case, the values can simply be read from the channel header.
*/
struct visorchannel *visorchannel_create(u64 physaddr,
unsigned long channel_bytes,
gfp_t gfp, uuid_le guid);
struct visorchannel *visorchannel_create_with_lock(u64 physaddr,
unsigned long channel_bytes,
gfp_t gfp, uuid_le guid);
void visorchannel_destroy(struct visorchannel *channel);
int visorchannel_read(struct visorchannel *channel, ulong offset,
void *local, ulong nbytes);
int visorchannel_write(struct visorchannel *channel, ulong offset,
void *local, ulong nbytes);
u64 visorchannel_get_physaddr(struct visorchannel *channel);
ulong visorchannel_get_nbytes(struct visorchannel *channel);
char *visorchannel_id(struct visorchannel *channel, char *s);
char *visorchannel_zoneid(struct visorchannel *channel, char *s);
u64 visorchannel_get_clientpartition(struct visorchannel *channel);
int visorchannel_set_clientpartition(struct visorchannel *channel,
u64 partition_handle);
char *visorchannel_uuid_id(uuid_le *guid, char *s);
void __iomem *visorchannel_get_header(struct visorchannel *channel);
#endif
