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/* visorchipset.h
*
* Copyright (C) 2010 - 2013 UNISYS CORPORATION
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* 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 "channel.h"
#include "controlvmchannel.h"
#include "vbusdeviceinfo.h"
#include "vbushelper.h"
struct visorchannel;
enum visorchipset_addresstype {
/** address is guest physical, but outside of the physical memory
* region that is controlled by the running OS (this is the normal
* address type for Supervisor channels)
*/
ADDRTYPE_LOCALPHYSICAL,
/** address is guest physical, and withIN the confines of the
* physical memory controlled by the running OS.
*/
ADDRTYPE_LOCALTEST,
};
/** Attributes for a particular Supervisor channel.
*/
struct visorchipset_channel_info {
enum visorchipset_addresstype addr_type;
u64 channel_addr;
struct irq_info intr;
u64 n_channel_bytes;
uuid_le channel_type_uuid;
uuid_le channel_inst_uuid;
};
/** Attributes for a particular Supervisor device.
* Any visorchipset client can query these attributes using
* visorchipset_get_client_device_info() or
* visorchipset_get_server_device_info().
*/
struct visorchipset_device_info {
struct list_head entry;
u32 bus_no;
u32 dev_no;
uuid_le dev_inst_uuid;
struct visorchipset_state state;
struct visorchipset_channel_info chan_info;
u32 reserved1; /* control_vm_id */
u64 reserved2;
u32 switch_no; /* when devState.attached==1 */
u32 internal_port_no; /* when devState.attached==1 */
struct controlvm_message_header pending_msg_hdr;/* CONTROLVM_MESSAGE */
/** For private use by the bus driver */
void *bus_driver_context;
};
/** Attributes for a particular Supervisor bus.
* (For a service partition acting as the server for buses/devices, there
* is a 1-to-1 relationship between busses and guest partitions.)
* Any visorchipset client can query these attributes using
* visorchipset_get_client_bus_info() or visorchipset_get_bus_info().
*/
struct visorchipset_bus_info {
struct list_head entry;
u32 bus_no;
struct visorchipset_state state;
struct visorchipset_channel_info chan_info;
uuid_le partition_uuid;
u64 partition_handle;
u8 *name; /* UTF8 */
u8 *description; /* UTF8 */
u64 reserved1;
u32 reserved2;
struct {
u32 server:1;
/* Add new fields above. */
/* Remaining bits in this 32-bit word are unused. */
} flags;
struct controlvm_message_header pending_msg_hdr;/* CONTROLVM MsgHdr */
/** For private use by the bus driver */
void *bus_driver_context;
};
/* 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)(u32 bus_no);
void (*bus_destroy)(u32 bus_no);
void (*device_create)(u32 bus_no, u32 dev_no);
void (*device_destroy)(u32 bus_no, u32 dev_no);
void (*device_pause)(u32 bus_no, u32 dev_no);
void (*device_resume)(u32 bus_no, u32 dev_no);
};
/* 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)(u32 bus_no, int response);
void (*bus_destroy)(u32 bus_no, int response);
void (*device_create)(u32 bus_no, u32 dev_no, int response);
void (*device_destroy)(u32 bus_no, u32 dev_no, int response);
void (*device_pause)(u32 bus_no, u32 dev_no, int response);
void (*device_resume)(u32 bus_no, u32 dev_no, 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);
bool visorchipset_get_bus_info(u32 bus_no,
struct visorchipset_bus_info *bus_info);
bool visorchipset_get_device_info(u32 bus_no, u32 dev_no,
struct visorchipset_device_info *dev_info);
bool visorchipset_set_bus_context(u32 bus_no, void *context);
/* visorbus init and exit functions */
int visorbus_init(void);
void visorbus_exit(void);
#endif
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