drivers: visorbus: move driver out of staging

Move the visorbus driver out of staging (drivers/staging/unisys/visorbus)
and to drivers/visorbus. Modify the configuration and makefiles so they
now reference the new location. The s-Par header file visorbus.h that is
referenced by all s-Par drivers, is being moved into include/linux.

Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: Tim Sell <timothy.sell@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

15 files changed, 4 insertions, 4526 deletions

diff --git a/drivers/staging/unisys/Kconfig b/drivers/staging/unisys/Kconfig
index 4d190389aa6c..c27dab3b610f 100644
--- a/drivers/staging/unisys/Kconfig
+++ b/drivers/staging/unisys/Kconfig
@@ -8,7 +8,6 @@ menuconfig UNISYSSPAR
 
 if UNISYSSPAR
 
-source "drivers/staging/unisys/visorbus/Kconfig"
 source "drivers/staging/unisys/visornic/Kconfig"
 source "drivers/staging/unisys/visorinput/Kconfig"
 source "drivers/staging/unisys/visorhba/Kconfig"
diff --git a/drivers/staging/unisys/Makefile b/drivers/staging/unisys/Makefile
index 20eb098538d3..e45f44b64202 100644
--- a/drivers/staging/unisys/Makefile
+++ b/drivers/staging/unisys/Makefile
@@ -1,7 +1,6 @@
 #
 # Makefile for Unisys SPAR drivers
 #
-obj-$(CONFIG_UNISYS_VISORBUS)		+= visorbus/
 obj-$(CONFIG_UNISYS_VISORNIC)		+= visornic/
 obj-$(CONFIG_UNISYS_VISORINPUT)		+= visorinput/
 obj-$(CONFIG_UNISYS_VISORHBA)		+= visorhba/
diff --git a/drivers/staging/unisys/include/iochannel.h b/drivers/staging/unisys/include/iochannel.h
index 9023cf56625d..45c785d80ce4 100644
--- a/drivers/staging/unisys/include/iochannel.h
+++ b/drivers/staging/unisys/include/iochannel.h
@@ -33,8 +33,7 @@
 
 #include <linux/uuid.h>
 #include <linux/skbuff.h>
-
-#include "visorbus.h"
+#include <linux/visorbus.h>
 
 /*
  * Must increment these whenever you insert or delete fields within this channel
diff --git a/drivers/staging/unisys/include/visorbus.h b/drivers/staging/unisys/include/visorbus.h
deleted file mode 100644
index 0d8bd6769b13..000000000000
--- a/drivers/staging/unisys/include/visorbus.h
+++ /dev/null
@@ -1,344 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2010 - 2013 UNISYS CORPORATION
- * All rights reserved.
- */
-
-/*
- *  This header file is to be included by other kernel mode components that
- *  implement a particular kind of visor_device.  Each of these other kernel
- *  mode components is called a visor device driver.  Refer to visortemplate
- *  for a minimal sample visor device driver.
- *
- *  There should be nothing in this file that is private to the visorbus
- *  bus implementation itself.
- */
-
-#ifndef __VISORBUS_H__
-#define __VISORBUS_H__
-
-#include <linux/device.h>
-
-#define VISOR_CHANNEL_SIGNATURE ('L' << 24 | 'N' << 16 | 'C' << 8 | 'E')
-
-/*
- * enum channel_serverstate
- * @CHANNELSRV_UNINITIALIZED: Channel is in an undefined state.
- * @CHANNELSRV_READY:	      Channel has been initialized by server.
- */
-enum channel_serverstate {
-	CHANNELSRV_UNINITIALIZED = 0,
-	CHANNELSRV_READY = 1
-};
-
-/*
- * enum channel_clientstate
- * @CHANNELCLI_DETACHED:
- * @CHANNELCLI_DISABLED:  Client can see channel but is NOT allowed to use it
- *			  unless given TBD* explicit request
- *			  (should actually be < DETACHED).
- * @CHANNELCLI_ATTACHING: Legacy EFI client request for EFI server to attach.
- * @CHANNELCLI_ATTACHED:  Idle, but client may want to use channel any time.
- * @CHANNELCLI_BUSY:	  Client either wants to use or is using channel.
- * @CHANNELCLI_OWNED:	  "No worries" state - client can access channel
- *			  anytime.
- */
-enum channel_clientstate {
-	CHANNELCLI_DETACHED = 0,
-	CHANNELCLI_DISABLED = 1,
-	CHANNELCLI_ATTACHING = 2,
-	CHANNELCLI_ATTACHED = 3,
-	CHANNELCLI_BUSY = 4,
-	CHANNELCLI_OWNED = 5
-};
-
-/*
- * Values for VISOR_CHANNEL_PROTOCOL.Features: This define exists so that
- * a guest can look at the FeatureFlags in the io channel, and configure the
- * driver to use interrupts or not based on this setting. All feature bits for
- * all channels should be defined here. The io channel feature bits are defined
- * below.
- */
-#define VISOR_DRIVER_ENABLES_INTS (0x1ULL << 1)
-#define VISOR_CHANNEL_IS_POLLING (0x1ULL << 3)
-#define VISOR_IOVM_OK_DRIVER_DISABLING_INTS (0x1ULL << 4)
-#define VISOR_DRIVER_DISABLES_INTS (0x1ULL << 5)
-#define VISOR_DRIVER_ENHANCED_RCVBUF_CHECKING (0x1ULL << 6)
-
-/*
- * struct channel_header - Common Channel Header
- * @signature:	       Signature.
- * @legacy_state:      DEPRECATED - being replaced by.
- * @header_size:       sizeof(struct channel_header).
- * @size:	       Total size of this channel in bytes.
- * @features:	       Flags to modify behavior.
- * @chtype:	       Channel type: data, bus, control, etc..
- * @partition_handle:  ID of guest partition.
- * @handle:	       Device number of this channel in client.
- * @ch_space_offset:   Offset in bytes to channel specific area.
- * @version_id:	       Struct channel_header Version ID.
- * @partition_index:   Index of guest partition.
- * @zone_uuid:	       Guid of Channel's zone.
- * @cli_str_offset:    Offset from channel header to null-terminated
- *		       ClientString (0 if ClientString not present).
- * @cli_state_boot:    CHANNEL_CLIENTSTATE of pre-boot EFI client of this
- *		       channel.
- * @cmd_state_cli:     CHANNEL_COMMANDSTATE (overloaded in Windows drivers, see
- *		       ServerStateUp, ServerStateDown, etc).
- * @cli_state_os:      CHANNEL_CLIENTSTATE of Guest OS client of this channel.
- * @ch_characteristic: CHANNEL_CHARACTERISTIC_<xxx>.
- * @cmd_state_srv:     CHANNEL_COMMANDSTATE (overloaded in Windows drivers, see
- *		       ServerStateUp, ServerStateDown, etc).
- * @srv_state:	       CHANNEL_SERVERSTATE.
- * @cli_error_boot:    Bits to indicate err states for boot clients, so err
- *		       messages can be throttled.
- * @cli_error_os:      Bits to indicate err states for OS clients, so err
- *		       messages can be throttled.
- * @filler:	       Pad out to 128 byte cacheline.
- * @recover_channel:   Please add all new single-byte values below here.
- */
-struct channel_header {
-	u64 signature;
-	u32 legacy_state;
-	/* SrvState, CliStateBoot, and CliStateOS below */
-	u32 header_size;
-	u64 size;
-	u64 features;
-	guid_t chtype;
-	u64 partition_handle;
-	u64 handle;
-	u64 ch_space_offset;
-	u32 version_id;
-	u32 partition_index;
-	guid_t zone_guid;
-	u32 cli_str_offset;
-	u32 cli_state_boot;
-	u32 cmd_state_cli;
-	u32 cli_state_os;
-	u32 ch_characteristic;
-	u32 cmd_state_srv;
-	u32 srv_state;
-	u8 cli_error_boot;
-	u8 cli_error_os;
-	u8 filler[1];
-	u8 recover_channel;
-} __packed;
-
-#define VISOR_CHANNEL_ENABLE_INTS (0x1ULL << 0)
-
-/*
- * struct signal_queue_header - Subheader for the Signal Type variation of the
- *                              Common Channel.
- * @version:	      SIGNAL_QUEUE_HEADER Version ID.
- * @chtype:	      Queue type: storage, network.
- * @size:	      Total size of this queue in bytes.
- * @sig_base_offset:  Offset to signal queue area.
- * @features:	      Flags to modify behavior.
- * @num_sent:	      Total # of signals placed in this queue.
- * @num_overflows:    Total # of inserts failed due to full queue.
- * @signal_size:      Total size of a signal for this queue.
- * @max_slots:        Max # of slots in queue, 1 slot is always empty.
- * @max_signals:      Max # of signals in queue (MaxSignalSlots-1).
- * @head:	      Queue head signal #.
- * @num_received:     Total # of signals removed from this queue.
- * @tail:	      Queue tail signal.
- * @reserved1:	      Reserved field.
- * @reserved2:	      Reserved field.
- * @client_queue:
- * @num_irq_received: Total # of Interrupts received. This is incremented by the
- *		      ISR in the guest windows driver.
- * @num_empty:	      Number of times that visor_signal_remove is called and
- *		      returned Empty Status.
- * @errorflags:	      Error bits set during SignalReinit to denote trouble with
- *		      client's fields.
- * @filler:	      Pad out to 64 byte cacheline.
- */
-struct signal_queue_header {
-	/* 1st cache line */
-	u32 version;
-	u32 chtype;
-	u64 size;
-	u64 sig_base_offset;
-	u64 features;
-	u64 num_sent;
-	u64 num_overflows;
-	u32 signal_size;
-	u32 max_slots;
-	u32 max_signals;
-	u32 head;
-	/* 2nd cache line */
-	u64 num_received;
-	u32 tail;
-	u32 reserved1;
-	u64 reserved2;
-	u64 client_queue;
-	u64 num_irq_received;
-	u64 num_empty;
-	u32 errorflags;
-	u8 filler[12];
-} __packed;
-
-/* VISORCHANNEL Guids */
-/* {414815ed-c58c-11da-95a9-00e08161165f} */
-#define VISOR_VHBA_CHANNEL_GUID \
-	GUID_INIT(0x414815ed, 0xc58c, 0x11da, \
-		  0x95, 0xa9, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f)
-#define VISOR_VHBA_CHANNEL_GUID_STR \
-	"414815ed-c58c-11da-95a9-00e08161165f"
-struct visorchipset_state {
-	u32 created:1;
-	u32 attached:1;
-	u32 configured:1;
-	u32 running:1;
-	/* Remaining bits in this 32-bit word are reserved. */
-};
-
-/**
- * struct visor_device - A device type for things "plugged" into the visorbus
- *                       bus
- * @visorchannel:		Points to the channel that the device is
- *				associated with.
- * @channel_type_guid:		Identifies the channel type to the bus driver.
- * @device:			Device struct meant for use by the bus driver
- *				only.
- * @list_all:			Used by the bus driver to enumerate devices.
- * @timer:		        Timer fired periodically to do interrupt-type
- *				activity.
- * @being_removed:		Indicates that the device is being removed from
- *				the bus. Private bus driver use only.
- * @visordriver_callback_lock:	Used by the bus driver to lock when adding and
- *				removing devices.
- * @pausing:			Indicates that a change towards a paused state.
- *				is in progress. Only modified by the bus driver.
- * @resuming:			Indicates that a change towards a running state
- *				is in progress. Only modified by the bus driver.
- * @chipset_bus_no:		Private field used by the bus driver.
- * @chipset_dev_no:		Private field used the bus driver.
- * @state:			Used to indicate the current state of the
- *				device.
- * @inst:			Unique GUID for this instance of the device.
- * @name:			Name of the device.
- * @pending_msg_hdr:		For private use by bus driver to respond to
- *				hypervisor requests.
- * @vbus_hdr_info:		A pointer to header info. Private use by bus
- *				driver.
- * @partition_guid:		Indicates client partion id. This should be the
- *				same across all visor_devices in the current
- *				guest. Private use by bus driver only.
- */
-struct visor_device {
-	struct visorchannel *visorchannel;
-	guid_t channel_type_guid;
-	/* These fields are for private use by the bus driver only. */
-	struct device device;
-	struct list_head list_all;
-	struct timer_list timer;
-	bool timer_active;
-	bool being_removed;
-	struct mutex visordriver_callback_lock; /* synchronize probe/remove */
-	bool pausing;
-	bool resuming;
-	u32 chipset_bus_no;
-	u32 chipset_dev_no;
-	struct visorchipset_state state;
-	guid_t inst;
-	u8 *name;
-	struct controlvm_message_header *pending_msg_hdr;
-	void *vbus_hdr_info;
-	guid_t partition_guid;
-	struct dentry *debugfs_dir;
-	struct dentry *debugfs_bus_info;
-};
-
-#define to_visor_device(x) container_of(x, struct visor_device, device)
-
-typedef void (*visorbus_state_complete_func) (struct visor_device *dev,
-					      int status);
-
-/*
- * This struct describes a specific visor channel, by providing its GUID, name,
- * and sizes.
- */
-struct visor_channeltype_descriptor {
-	const guid_t guid;
-	const char *name;
-	u64 min_bytes;
-	u32 version;
-};
-
-/**
- * struct visor_driver - Information provided by each visor driver when it
- *                       registers with the visorbus driver
- * @name:		Name of the visor driver.
- * @owner:		The module owner.
- * @channel_types:	Types of channels handled by this driver, ending with
- *			a zero GUID. Our specialized BUS.match() method knows
- *			about this list, and uses it to determine whether this
- *			driver will in fact handle a new device that it has
- *			detected.
- * @probe:		Called when a new device comes online, by our probe()
- *			function specified by driver.probe() (triggered
- *			ultimately by some call to driver_register(),
- *			bus_add_driver(), or driver_attach()).
- * @remove:		Called when a new device is removed, by our remove()
- *			function specified by driver.remove() (triggered
- *			ultimately by some call to device_release_driver()).
- * @channel_interrupt:	Called periodically, whenever there is a possiblity
- *			that "something interesting" may have happened to the
- *			channel.
- * @pause:		Called to initiate a change of the device's state.  If
- *			the return valu`e is < 0, there was an error and the
- *			state transition will NOT occur.  If the return value
- *			is >= 0, then the state transition was INITIATED
- *			successfully, and complete_func() will be called (or
- *			was just called) with the final status when either the
- *			state transition fails or completes successfully.
- * @resume:		Behaves similar to pause.
- * @driver:		Private reference to the device driver. For use by bus
- *			driver only.
- */
-struct visor_driver {
-	const char *name;
-	struct module *owner;
-	struct visor_channeltype_descriptor *channel_types;
-	int (*probe)(struct visor_device *dev);
-	void (*remove)(struct visor_device *dev);
-	void (*channel_interrupt)(struct visor_device *dev);
-	int (*pause)(struct visor_device *dev,
-		     visorbus_state_complete_func complete_func);
-	int (*resume)(struct visor_device *dev,
-		      visorbus_state_complete_func complete_func);
-
-	/* These fields are for private use by the bus driver only. */
-	struct device_driver driver;
-};
-
-#define to_visor_driver(x) (container_of(x, struct visor_driver, driver))
-
-int visor_check_channel(struct channel_header *ch, struct device *dev,
-			const guid_t *expected_uuid, char *chname,
-			u64 expected_min_bytes,	u32 expected_version,
-			u64 expected_signature);
-
-int visorbus_register_visor_driver(struct visor_driver *drv);
-void visorbus_unregister_visor_driver(struct visor_driver *drv);
-int visorbus_read_channel(struct visor_device *dev,
-			  unsigned long offset, void *dest,
-			  unsigned long nbytes);
-int visorbus_write_channel(struct visor_device *dev,
-			   unsigned long offset, void *src,
-			   unsigned long nbytes);
-int visorbus_enable_channel_interrupts(struct visor_device *dev);
-void visorbus_disable_channel_interrupts(struct visor_device *dev);
-
-int visorchannel_signalremove(struct visorchannel *channel, u32 queue,
-			      void *msg);
-int visorchannel_signalinsert(struct visorchannel *channel, u32 queue,
-			      void *msg);
-bool visorchannel_signalempty(struct visorchannel *channel, u32 queue);
-const guid_t *visorchannel_get_guid(struct visorchannel *channel);
-
-#define BUS_ROOT_DEVICE UINT_MAX
-struct visor_device *visorbus_get_device_by_id(u32 bus_no, u32 dev_no,
-					       struct visor_device *from);
-#endif
diff --git a/drivers/staging/unisys/visorbus/Kconfig b/drivers/staging/unisys/visorbus/Kconfig
deleted file mode 100644
index 3866804ed918..000000000000
--- a/drivers/staging/unisys/visorbus/Kconfig
+++ /dev/null
@@ -1,15 +0,0 @@
-#
-# Unisys visorbus configuration
-#
-
-config UNISYS_VISORBUS
-	tristate "Unisys visorbus driver"
-	depends on UNISYSSPAR
-	depends on X86_64 && ACPI
-	---help---
-	The visorbus driver is a virtualized bus for the Unisys s-Par firmware.
-	Virtualized devices allow Linux guests on a system to share disks and
-	network cards that do not have SR-IOV support, and to be accessed using
-	the partition desktop application. The visorbus driver is required to
-	discover devices on an s-Par guest, and must be present for any other
-	s-Par guest driver to function correctly.
diff --git a/drivers/staging/unisys/visorbus/Makefile b/drivers/staging/unisys/visorbus/Makefile
deleted file mode 100644
index 784cdc1f9d6a..000000000000
--- a/drivers/staging/unisys/visorbus/Makefile
+++ /dev/null
@@ -1,12 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for Unisys visorbus
-#
-
-obj-$(CONFIG_UNISYS_VISORBUS)	+= visorbus.o
-
-visorbus-y := visorbus_main.o
-visorbus-y += visorchannel.o
-visorbus-y += visorchipset.o
-
-ccflags-y += -Idrivers/staging/unisys/include
diff --git a/drivers/staging/unisys/visorbus/controlvmchannel.h b/drivers/staging/unisys/visorbus/controlvmchannel.h
deleted file mode 100644
index b0ae29e505ff..000000000000
--- a/drivers/staging/unisys/visorbus/controlvmchannel.h
+++ /dev/null
@@ -1,651 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2010 - 2015 UNISYS CORPORATION
- * All rights reserved.
- */
-
-#ifndef __CONTROLVMCHANNEL_H__
-#define __CONTROLVMCHANNEL_H__
-
-#include <linux/uuid.h>
-
-#include "visorbus.h"
-
-/* {2B3C2D10-7EF5-4ad8-B966-3448B7386B3D} */
-#define VISOR_CONTROLVM_CHANNEL_GUID \
-	GUID_INIT(0x2b3c2d10, 0x7ef5, 0x4ad8, \
-		  0xb9, 0x66, 0x34, 0x48, 0xb7, 0x38, 0x6b, 0x3d)
-
-#define CONTROLVM_MESSAGE_MAX 64
-
-/*
- * Must increment this whenever you insert or delete fields within this channel
- * struct.  Also increment whenever you change the meaning of fields within this
- * channel struct so as to break pre-existing software. Note that you can
- * usually add fields to the END of the channel struct withOUT needing to
- * increment this.
- */
-#define VISOR_CONTROLVM_CHANNEL_VERSIONID 1
-
-/* Defines for various channel queues */
-#define CONTROLVM_QUEUE_REQUEST		0
-#define CONTROLVM_QUEUE_RESPONSE	1
-#define CONTROLVM_QUEUE_EVENT		2
-#define CONTROLVM_QUEUE_ACK		3
-
-/* Max num of messages stored during IOVM creation to be reused after crash */
-#define CONTROLVM_CRASHMSG_MAX 2
-
-/*
- * struct visor_segment_state
- * @enabled:   May enter other states.
- * @active:    Assigned to active partition.
- * @alive:     Configure message sent to service/server.
- * @revoked:   Similar to partition state ShuttingDown.
- * @allocated: Memory (device/port number) has been selected by Command.
- * @known:     Has been introduced to the service/guest partition.
- * @ready:     Service/Guest partition has responded to introduction.
- * @operating: Resource is configured and operating.
- * @reserved:  Natural alignment.
- *
- * Note: Don't use high bit unless we need to switch to ushort which is
- * non-compliant.
- */
-struct visor_segment_state  {
-	u16 enabled:1;
-	u16 active:1;
-	u16 alive:1;
-	u16 revoked:1;
-	u16 allocated:1;
-	u16 known:1;
-	u16 ready:1;
-	u16 operating:1;
-	u16 reserved:8;
-} __packed;
-
-static const struct visor_segment_state segment_state_running = {
-	1, 1, 1, 0, 1, 1, 1, 1
-};
-
-static const struct visor_segment_state segment_state_paused = {
-	1, 1, 1, 0, 1, 1, 1, 0
-};
-
-static const struct visor_segment_state segment_state_standby = {
-	1, 1, 0, 0, 1, 1, 1, 0
-};
-
-/*
- * enum controlvm_id
- * @CONTROLVM_INVALID:
- * @CONTROLVM_BUS_CREATE:		CP --> SP, GP.
- * @CONTROLVM_BUS_DESTROY:		CP --> SP, GP.
- * @CONTROLVM_BUS_CONFIGURE:		CP --> SP.
- * @CONTROLVM_BUS_CHANGESTATE:		CP --> SP, GP.
- * @CONTROLVM_BUS_CHANGESTATE_EVENT:	SP, GP --> CP.
- * @CONTROLVM_DEVICE_CREATE:		CP --> SP, GP.
- * @CONTROLVM_DEVICE_DESTROY:		CP --> SP, GP.
- * @CONTROLVM_DEVICE_CONFIGURE:		CP --> SP.
- * @CONTROLVM_DEVICE_CHANGESTATE:	CP --> SP, GP.
- * @CONTROLVM_DEVICE_CHANGESTATE_EVENT:	SP, GP --> CP.
- * @CONTROLVM_DEVICE_RECONFIGURE:	CP --> Boot.
- * @CONTROLVM_CHIPSET_INIT:		CP --> SP, GP.
- * @CONTROLVM_CHIPSET_STOP:		CP --> SP, GP.
- * @CONTROLVM_CHIPSET_READY:		CP --> SP.
- * @CONTROLVM_CHIPSET_SELFTEST:		CP --> SP.
- *
- * Ids for commands that may appear in either queue of a ControlVm channel.
- *
- * Commands that are initiated by the command partition (CP), by an IO or
- * console service partition (SP), or by a guest partition (GP) are:
- * - issued on the RequestQueue queue (q #0) in the ControlVm channel
- * - responded to on the ResponseQueue queue (q #1) in the ControlVm channel
- *
- * Events that are initiated by an IO or console service partition (SP) or
- * by a guest partition (GP) are:
- * - issued on the EventQueue queue (q #2) in the ControlVm channel
- * - responded to on the EventAckQueue queue (q #3) in the ControlVm channel
- */
-enum controlvm_id {
-	CONTROLVM_INVALID = 0,
-	/*
-	 * SWITCH commands required Parameter: SwitchNumber.
-	 * BUS commands required Parameter: BusNumber
-	 */
-	CONTROLVM_BUS_CREATE = 0x101,
-	CONTROLVM_BUS_DESTROY = 0x102,
-	CONTROLVM_BUS_CONFIGURE = 0x104,
-	CONTROLVM_BUS_CHANGESTATE = 0x105,
-	CONTROLVM_BUS_CHANGESTATE_EVENT = 0x106,
-	/* DEVICE commands required Parameter: BusNumber, DeviceNumber */
-	CONTROLVM_DEVICE_CREATE = 0x201,
-	CONTROLVM_DEVICE_DESTROY = 0x202,
-	CONTROLVM_DEVICE_CONFIGURE = 0x203,
-	CONTROLVM_DEVICE_CHANGESTATE = 0x204,
-	CONTROLVM_DEVICE_CHANGESTATE_EVENT = 0x205,
-	CONTROLVM_DEVICE_RECONFIGURE = 0x206,
-	/* CHIPSET commands */
-	CONTROLVM_CHIPSET_INIT = 0x301,
-	CONTROLVM_CHIPSET_STOP = 0x302,
-	CONTROLVM_CHIPSET_READY = 0x304,
-	CONTROLVM_CHIPSET_SELFTEST = 0x305,
-};
-
-/*
- * struct irq_info
- * @reserved1:	     Natural alignment purposes
- * @recv_irq_handle: Specifies interrupt handle. It is used to retrieve the
- *		     corresponding interrupt pin from Monitor; and the interrupt
- *		     pin is used to connect to the corresponding interrupt.
- *		     Used by IOPart-GP only.
- * @recv_irq_vector: Specifies interrupt vector. It, interrupt pin, and shared
- *		     are used to connect to the corresponding interrupt.
- *		     Used by IOPart-GP only.
- * @recv_irq_shared: Specifies if the recvInterrupt is shared.  It, interrupt
- *		     pin and vector are used to connect to 0 = not shared;
- *		     1 = shared the corresponding interrupt.
- *		     Used by IOPart-GP only.
- * @reserved:	     Natural alignment purposes
- */
-struct irq_info {
-	u64 reserved1;
-	u64 recv_irq_handle;
-	u32 recv_irq_vector;
-	u8 recv_irq_shared;
-	u8 reserved[3];
-} __packed;
-
-/*
- * struct efi_visor_indication
- * @boot_to_fw_ui: Stop in UEFI UI
- * @clear_nvram:   Clear NVRAM
- * @clear_cmos:	   Clear CMOS
- * @boot_to_tool:  Run install tool
- * @reserved:	   Natural alignment
- */
-struct efi_visor_indication  {
-	u64 boot_to_fw_ui:1;
-	u64 clear_nvram:1;
-	u64 clear_cmos:1;
-	u64 boot_to_tool:1;
-	/* Remaining bits are available */
-	u64 reserved:60;
-} __packed;
-
-enum visor_chipset_feature {
-	VISOR_CHIPSET_FEATURE_REPLY = 0x00000001,
-	VISOR_CHIPSET_FEATURE_PARA_HOTPLUG = 0x00000002,
-};
-
-/*
- * struct controlvm_message_header
- * @id:		       See CONTROLVM_ID.
- * @message_size:      Includes size of this struct + size of message.
- * @segment_index:     Index of segment containing Vm message/information.
- * @completion_status: Error status code or result of  message completion.
- * @struct flags:
- *	@failed:	     =1 in a response to signify failure.
- *	@response_expected:  =1 in all messages that expect a response.
- *	@server:	     =1 in all bus & device-related messages where the
- *			     message receiver is to act as the bus or device
- *			     server.
- *	@test_message:	     =1 for testing use only (Control and Command
- *			     ignore this).
- *	@partial_completion: =1 if there are forthcoming responses/acks
- *                           associated with this message.
- *      @preserve:	     =1 this is to let us know to preserve channel
- *			     contents.
- *	@writer_in_diag:     =1 the DiagWriter is active in the Diagnostic
- *			     Partition.
- *	@reserve:	     Natural alignment.
- * @reserved:	       Natural alignment.
- * @message_handle:    Identifies the particular message instance.
- * @payload_vm_offset: Offset of payload area from start of this instance.
- * @payload_max_bytes: Maximum bytes allocated in payload area of ControlVm
- *		       segment.
- * @payload_bytes:     Actual number of bytes of payload area to copy between
- *		       IO/Command. If non-zero, there is a payload to copy.
- *
- * This is the common structure that is at the beginning of every
- * ControlVm message (both commands and responses) in any ControlVm
- * queue.  Commands are easily distinguished from responses by
- * looking at the flags.response field.
- */
-struct controlvm_message_header  {
-	u32 id;
-	/*
-	 * For requests, indicates the message type. For responses, indicates
-	 * the type of message we are responding to.
-	 */
-	u32 message_size;
-	u32 segment_index;
-	u32 completion_status;
-	struct  {
-		u32 failed:1;
-		u32 response_expected:1;
-		u32 server:1;
-		u32 test_message:1;
-		u32 partial_completion:1;
-		u32 preserve:1;
-		u32 writer_in_diag:1;
-		u32 reserve:25;
-	} __packed flags;
-	u32 reserved;
-	u64 message_handle;
-	u64 payload_vm_offset;
-	u32 payload_max_bytes;
-	u32 payload_bytes;
-} __packed;
-
-/*
- * struct controlvm_packet_device_create - For CONTROLVM_DEVICE_CREATE
- * @bus_no:	    Bus # (0..n-1) from the msg receiver's end.
- * @dev_no:	    Bus-relative (0..n-1) device number.
- * @channel_addr:   Guest physical address of the channel, which can be
- *		    dereferenced by the receiver of this ControlVm command.
- * @channel_bytes:  Specifies size of the channel in bytes.
- * @data_type_uuid: Specifies format of data in channel.
- * @dev_inst_uuid:  Instance guid for the device.
- * @irq_info intr:  Specifies interrupt information.
- */
-struct controlvm_packet_device_create  {
-	u32 bus_no;
-	u32 dev_no;
-	u64 channel_addr;
-	u64 channel_bytes;
-	guid_t data_type_guid;
-	guid_t dev_inst_guid;
-	struct irq_info intr;
-} __packed;
-
-/*
- * struct controlvm_packet_device_configure - For CONTROLVM_DEVICE_CONFIGURE
- * @bus_no: Bus number (0..n-1) from the msg receiver's perspective.
- * @dev_no: Bus-relative (0..n-1) device number.
- */
-struct controlvm_packet_device_configure  {
-	u32 bus_no;
-	u32 dev_no;
-} __packed;
-
-/* Total 128 bytes */
-struct controlvm_message_device_create {
-	struct controlvm_message_header header;
-	struct controlvm_packet_device_create packet;
-} __packed;
-
-/* Total 56 bytes */
-struct controlvm_message_device_configure  {
-	struct controlvm_message_header header;
-	struct controlvm_packet_device_configure packet;
-} __packed;
-
-/*
- * struct controlvm_message_packet - This is the format for a message in any
- *                                   ControlVm queue.
- * @struct create_bus:		For CONTROLVM_BUS_CREATE.
- *	@bus_no:	     Bus # (0..n-1) from the msg receiver's perspective.
- *	@dev_count:	     Indicates the max number of devices on this bus.
- *	@channel_addr:	     Guest physical address of the channel, which can be
- *			     dereferenced by the receiver of this ControlVM
- *			     command.
- *	@channel_bytes:	     Size of the channel.
- *	@bus_data_type_uuid: Indicates format of data in bus channel.
- *	@bus_inst_uuid:	     Instance uuid for the bus.
- *
- * @struct destroy_bus:		For CONTROLVM_BUS_DESTROY.
- *	@bus_no: Bus # (0..n-1) from the msg receiver's perspective.
- *	@reserved: Natural alignment purposes.
- *
- * @struct configure_bus:	For CONTROLVM_BUS_CONFIGURE.
- *	@bus_no:	      Bus # (0..n-1) from the receiver's perspective.
- *	@reserved1:	      For alignment purposes.
- *	@guest_handle:	      This is used to convert guest physical address to
- *			      physical address.
- *	@recv_bus_irq_handle: Specifies interrupt info. It is used by SP to
- *			      register to receive interrupts from the CP. This
- *			      interrupt is used for bus level notifications.
- *			      The corresponding sendBusInterruptHandle is kept
- *			      in CP.
- *
- * @struct create_device:	For CONTROLVM_DEVICE_CREATE.
- *
- * @struct destroy_device:	For CONTROLVM_DEVICE_DESTROY.
- *	@bus_no: Bus # (0..n-1) from the msg receiver's perspective.
- *	@dev_no: Bus-relative (0..n-1) device number.
- *
- * @struct configure_device:	For CONTROLVM_DEVICE_CONFIGURE.
- *
- * @struct reconfigure_device:	For CONTROLVM_DEVICE_RECONFIGURE.
- *	@bus_no: Bus # (0..n-1) from the msg receiver's perspective.
- *	@dev_no: Bus-relative (0..n-1) device number.
- *
- * @struct bus_change_state:	For CONTROLVM_BUS_CHANGESTATE.
- *	@bus_no:
- *	@struct state:
- *	@reserved: Natural alignment purposes.
- *
- * @struct device_change_state:	For CONTROLVM_DEVICE_CHANGESTATE.
- *	@bus_no:
- *	@dev_no:
- *	@struct state:
- *	@struct flags:
- *		@phys_device: =1 if message is for a physical device.
- *		@reserved:    Natural alignment.
- *		@reserved1:   Natural alignment.
- *	@reserved:    Natural alignment purposes.
- *
- * @struct device_change_state_event:	For CONTROLVM_DEVICE_CHANGESTATE_EVENT.
- *	@bus_no:
- *	@dev_no:
- *	@struct state:
- *	@reserved:     Natural alignment purposes.
- *
- * @struct init_chipset:	For CONTROLVM_CHIPSET_INIT.
- *	@bus_count:	  Indicates the max number of busses.
- *	@switch_count:    Indicates the max number of switches.
- *	@enum features:
- *	@platform_number:
- *
- * @struct chipset_selftest:	For CONTROLVM_CHIPSET_SELFTEST.
- *      @options: Reserved.
- *      @test:	  Bit 0 set to run embedded selftest.
- *
- * @addr:   A physical address of something, that can be dereferenced by the
- *	    receiver of this ControlVm command.
- *
- * @handle: A handle of something (depends on command id).
- */
-struct controlvm_message_packet  {
-	union  {
-		struct  {
-			u32 bus_no;
-			u32 dev_count;
-			u64 channel_addr;
-			u64 channel_bytes;
-			guid_t bus_data_type_guid;
-			guid_t bus_inst_guid;
-		} __packed create_bus;
-		struct  {
-			u32 bus_no;
-			u32 reserved;
-		} __packed destroy_bus;
-		struct  {
-			u32 bus_no;
-			u32 reserved1;
-			u64 guest_handle;
-			u64 recv_bus_irq_handle;
-		} __packed configure_bus;
-		struct controlvm_packet_device_create create_device;
-		struct  {
-			u32 bus_no;
-			u32 dev_no;
-		} __packed destroy_device;
-		struct controlvm_packet_device_configure configure_device;
-		struct  {
-			u32 bus_no;
-			u32 dev_no;
-		} __packed reconfigure_device;
-		struct  {
-			u32 bus_no;
-			struct visor_segment_state state;
-			u8 reserved[2];
-		} __packed bus_change_state;
-		struct  {
-			u32 bus_no;
-			u32 dev_no;
-			struct visor_segment_state state;
-			struct  {
-				u32 phys_device:1;
-				u32 reserved:31;
-				u32 reserved1;
-			} __packed flags;
-			u8 reserved[2];
-		} __packed device_change_state;
-		struct  {
-			u32 bus_no;
-			u32 dev_no;
-			struct visor_segment_state state;
-			u8 reserved[6];
-		} __packed device_change_state_event;
-		struct  {
-			u32 bus_count;
-			u32 switch_count;
-			enum visor_chipset_feature features;
-			u32 platform_number;
-		} __packed init_chipset;
-		struct  {
-			u32 options;
-			u32 test;
-		} __packed chipset_selftest;
-		u64 addr;
-		u64 handle;
-	};
-} __packed;
-
-/* All messages in any ControlVm queue have this layout. */
-struct controlvm_message {
-	struct controlvm_message_header hdr;
-	struct controlvm_message_packet cmd;
-} __packed;
-
-/*
- * struct visor_controlvm_channel
- * @struct header:
- * @gp_controlvm:			Guest phys addr of this channel.
- * @gp_partition_tables:		Guest phys addr of partition tables.
- * @gp_diag_guest:			Guest phys addr of diagnostic channel.
- * @gp_boot_romdisk:			Guest phys addr of (read* only) Boot
- *					ROM disk.
- * @gp_boot_ramdisk:			Guest phys addr of writable Boot RAM
- *					disk.
- * @gp_acpi_table:			Guest phys addr of acpi table.
- * @gp_control_channel:			Guest phys addr of control channel.
- * @gp_diag_romdisk:			Guest phys addr of diagnostic ROM disk.
- * @gp_nvram:				Guest phys addr of NVRAM channel.
- * @request_payload_offset:		Offset to request payload area.
- * @event_payload_offset:		Offset to event payload area.
- * @request_payload_bytes:		Bytes available in request payload area.
- * @event_payload_bytes:		Bytes available in event payload area.
- * @control_channel_bytes:
- * @nvram_channel_bytes:		Bytes in PartitionNvram segment.
- * @message_bytes:			sizeof(CONTROLVM_MESSAGE).
- * @message_count:			CONTROLVM_MESSAGE_MAX.
- * @gp_smbios_table:			Guest phys addr of SMBIOS tables.
- * @gp_physical_smbios_table:		Guest phys addr of SMBIOS table.
- * @gp_reserved:			VISOR_MAX_GUESTS_PER_SERVICE.
- * @virtual_guest_firmware_image_base:	Guest physical address of EFI firmware
- *					image base.
- * @virtual_guest_firmware_entry_point:	Guest physical address of EFI firmware
- *					entry point.
- * @virtual_guest_firmware_image_size:	Guest EFI firmware image size.
- * @virtual_guest_firmware_boot_base:	GPA = 1MB where EFI firmware image is
- *					copie