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xen: Import other xen/io/*.h 

A Xen public header have been imported into QEMU (by
f65eadb639 "xen: import ring.h from xen"), but there are other header
that depends on ring.h which come from the system when building QEMU.

This patch resolves the issue of having headers from the system
importing a different copie of ring.h.

This patch is prompt by the build issue described in the previous
patch: 'Revert xen/io/ring.h of "Clean up a few header guard symbols"'

ring.h and the new imported headers are moved to
"include/hw/xen/interface" as those describe interfaces with a guest.

The imported headers are cleaned up a bit while importing them: some
part of the file that QEMU doesn't use are removed (description
of how to make hypercall in grant_table.h have been removed).

Other cleanup:
- xen-mapcache.c and xen-legacy-backend.c don't need grant_table.h.
- xenfb.c doesn't need event_channel.h.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Message-Id: <20190621105441.3025-3-anthony.perard@citrix.com>
This commit is contained in:
Anthony PERARD 2019-06-21 11:54:41 +01:00
parent d1744bd321
commit a3434a2d56
18 changed files with 2903 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
hw/9pfs/xen-9pfs.h
View File

@ -13,8 +13,8 @@
#ifndef HW_9PFS_XEN_9PFS_H
#define HW_9PFS_XEN_9PFS_H
#include <xen/io/protocols.h>
#include "hw/xen/io/ring.h"
#include "hw/xen/interface/io/protocols.h"
#include "hw/xen/interface/io/ring.h"
/*
* Do not merge into xen-9p-backend.c: clang doesn't allow unused static

5
hw/block/xen_blkif.h
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@ -1,9 +1,8 @@
#ifndef XEN_BLKIF_H
#define XEN_BLKIF_H
#include "hw/xen/io/ring.h"
#include <xen/io/blkif.h>
#include <xen/io/protocols.h>
#include "hw/xen/interface/io/blkif.h"
#include "hw/xen/interface/io/protocols.h"
/*
* Not a real protocol. Used to generate ring structs which contain

2
hw/char/xen_console.c
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@ -28,7 +28,7 @@
#include "chardev/char-fe.h"
#include "hw/xen/xen-legacy-backend.h"
#include <xen/io/console.h>
#include "hw/xen/interface/io/console.h"
struct buffer {
uint8_t *data;

7
hw/display/xenfb.c
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@ -32,10 +32,9 @@
#include "ui/console.h"
#include "hw/xen/xen-legacy-backend.h"
#include <xen/event_channel.h>
#include <xen/io/fbif.h>
#include <xen/io/kbdif.h>
#include <xen/io/protocols.h>
#include "hw/xen/interface/io/fbif.h"
#include "hw/xen/interface/io/kbdif.h"
#include "hw/xen/interface/io/protocols.h"
#include "trace.h"

2
hw/net/xen_nic.c
View File

@ -30,7 +30,7 @@
#include "net/util.h"
#include "hw/xen/xen-legacy-backend.h"
#include <xen/io/netif.h>
#include "hw/xen/interface/io/netif.h"
/* ------------------------------------------------------------- */

3
hw/usb/xen-usb.c
View File

@ -32,8 +32,7 @@
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qstring.h"
#include "hw/xen/io/ring.h"
#include <xen/io/usbif.h>
#include "hw/xen/interface/io/usbif.h"
/*
* Check for required support of usbif.h: USBIF_SHORT_NOT_OK was the last

2
hw/xen/xen-legacy-backend.c
View File

@ -34,8 +34,6 @@
#include "hw/xen/xen_pvdev.h"
#include "monitor/qdev.h"
#include <xen/grant_table.h>
DeviceState *xen_sysdev;
BusState *xen_sysbus;

36
include/hw/xen/interface/grant_table.h Normal file
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@ -0,0 +1,36 @@
/******************************************************************************
* grant_table.h
*
* Interface for granting foreign access to page frames, and receiving
* page-ownership transfers.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (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.
*
* Copyright (c) 2004, K A Fraser
*/
#ifndef __XEN_PUBLIC_GRANT_TABLE_H__
#define __XEN_PUBLIC_GRANT_TABLE_H__
/*
* Reference to a grant entry in a specified domain's grant table.
*/
typedef uint32_t grant_ref_t;
#endif /* __XEN_PUBLIC_GRANT_TABLE_H__ */

712
include/hw/xen/interface/io/blkif.h Normal file
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@ -0,0 +1,712 @@
/******************************************************************************
* blkif.h
*
* Unified block-device I/O interface for Xen guest OSes.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (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.
*
* Copyright (c) 2003-2004, Keir Fraser
* Copyright (c) 2012, Spectra Logic Corporation
*/
#ifndef __XEN_PUBLIC_IO_BLKIF_H__
#define __XEN_PUBLIC_IO_BLKIF_H__
#include "ring.h"
#include "../grant_table.h"
/*
* Front->back notifications: When enqueuing a new request, sending a
* notification can be made conditional on req_event (i.e., the generic
* hold-off mechanism provided by the ring macros). Backends must set
* req_event appropriately (e.g., using RING_FINAL_CHECK_FOR_REQUESTS()).
*
* Back->front notifications: When enqueuing a new response, sending a
* notification can be made conditional on rsp_event (i.e., the generic
* hold-off mechanism provided by the ring macros). Frontends must set
* rsp_event appropriately (e.g., using RING_FINAL_CHECK_FOR_RESPONSES()).
*/
#ifndef blkif_vdev_t
#define blkif_vdev_t uint16_t
#endif
#define blkif_sector_t uint64_t
/*
* Feature and Parameter Negotiation
* =================================
* The two halves of a Xen block driver utilize nodes within the XenStore to
* communicate capabilities and to negotiate operating parameters. This
* section enumerates these nodes which reside in the respective front and
* backend portions of the XenStore, following the XenBus convention.
*
* All data in the XenStore is stored as strings. Nodes specifying numeric
* values are encoded in decimal. Integer value ranges listed below are
* expressed as fixed sized integer types capable of storing the conversion
* of a properly formated node string, without loss of information.
*
* Any specified default value is in effect if the corresponding XenBus node
* is not present in the XenStore.
*
* XenStore nodes in sections marked "PRIVATE" are solely for use by the
* driver side whose XenBus tree contains them.
*
* XenStore nodes marked "DEPRECATED" in their notes section should only be
* used to provide interoperability with legacy implementations.
*
* See the XenBus state transition diagram below for details on when XenBus
* nodes must be published and when they can be queried.
*
*****************************************************************************
* Backend XenBus Nodes
*****************************************************************************
*
*------------------ Backend Device Identification (PRIVATE) ------------------
*
* mode
* Values: "r" (read only), "w" (writable)
*
* The read or write access permissions to the backing store to be
* granted to the frontend.
*
* params
* Values: string
*
* A free formatted string providing sufficient information for the
* hotplug script to attach the device and provide a suitable
* handler (ie: a block device) for blkback to use.
*
* physical-device
* Values: "MAJOR:MINOR"
* Notes: 11
*
* MAJOR and MINOR are the major number and minor number of the
* backing device respectively.
*
* physical-device-path
* Values: path string
*
* A string that contains the absolute path to the disk image. On
* NetBSD and Linux this is always a block device, while on FreeBSD
* it can be either a block device or a regular file.
*
* type
* Values: "file", "phy", "tap"
*
* The type of the backing device/object.
*
*
* direct-io-safe
* Values: 0/1 (boolean)
* Default Value: 0
*
* The underlying storage is not affected by the direct IO memory
* lifetime bug. See:
* http://lists.xen.org/archives/html/xen-devel/2012-12/msg01154.html
*
* Therefore this option gives the backend permission to use
* O_DIRECT, notwithstanding that bug.
*
* That is, if this option is enabled, use of O_DIRECT is safe,
* in circumstances where we would normally have avoided it as a
* workaround for that bug. This option is not relevant for all
* backends, and even not necessarily supported for those for
* which it is relevant. A backend which knows that it is not
* affected by the bug can ignore this option.
*
* This option doesn't require a backend to use O_DIRECT, so it
* should not be used to try to control the caching behaviour.
*
*--------------------------------- Features ---------------------------------
*
* feature-barrier
* Values: 0/1 (boolean)
* Default Value: 0
*
* A value of "1" indicates that the backend can process requests
* containing the BLKIF_OP_WRITE_BARRIER request opcode. Requests
* of this type may still be returned at any time with the
* BLKIF_RSP_EOPNOTSUPP result code.
*
* feature-flush-cache
* Values: 0/1 (boolean)
* Default Value: 0
*
* A value of "1" indicates that the backend can process requests
* containing the BLKIF_OP_FLUSH_DISKCACHE request opcode. Requests
* of this type may still be returned at any time with the
* BLKIF_RSP_EOPNOTSUPP result code.
*
* feature-discard
* Values: 0/1 (boolean)
* Default Value: 0
*
* A value of "1" indicates that the backend can process requests
* containing the BLKIF_OP_DISCARD request opcode. Requests
* of this type may still be returned at any time with the
* BLKIF_RSP_EOPNOTSUPP result code.
*
* feature-persistent
* Values: 0/1 (boolean)
* Default Value: 0
* Notes: 7
*
* A value of "1" indicates that the backend can keep the grants used
* by the frontend driver mapped, so the same set of grants should be
* used in all transactions. The maximum number of grants the backend
* can map persistently depends on the implementation, but ideally it
* should be RING_SIZE * BLKIF_MAX_SEGMENTS_PER_REQUEST. Using this
* feature the backend doesn't need to unmap each grant, preventing
* costly TLB flushes. The backend driver should only map grants
* persistently if the frontend supports it. If a backend driver chooses
* to use the persistent protocol when the frontend doesn't support it,
* it will probably hit the maximum number of persistently mapped grants
* (due to the fact that the frontend won't be reusing the same grants),
* and fall back to non-persistent mode. Backend implementations may
* shrink or expand the number of persistently mapped grants without
* notifying the frontend depending on memory constraints (this might
* cause a performance degradation).
*
* If a backend driver wants to limit the maximum number of persistently
* mapped grants to a value less than RING_SIZE *
* BLKIF_MAX_SEGMENTS_PER_REQUEST a LRU strategy should be used to
* discard the grants that are less commonly used. Using a LRU in the
* backend driver paired with a LIFO queue in the frontend will
* allow us to have better performance in this scenario.
*
*----------------------- Request Transport Parameters ------------------------
*
* max-ring-page-order
* Values: <uint32_t>
* Default Value: 0
* Notes: 1, 3
*
* The maximum supported size of the request ring buffer in units of
* lb(machine pages). (e.g. 0 == 1 page, 1 = 2 pages, 2 == 4 pages,
* etc.).
*
* max-ring-pages
* Values: <uint32_t>
* Default Value: 1
* Notes: DEPRECATED, 2, 3
*
* The maximum supported size of the request ring buffer in units of
* machine pages. The value must be a power of 2.
*
*------------------------- Backend Device Properties -------------------------
*
* discard-enable
* Values: 0/1 (boolean)
* Default Value: 1
*
* This optional property, set by the toolstack, instructs the backend
* to offer (or not to offer) discard to the frontend. If the property
* is missing the backend should offer discard if the backing storage
* actually supports it.
*
* discard-alignment
* Values: <uint32_t>
* Default Value: 0
* Notes: 4, 5
*
* The offset, in bytes from the beginning of the virtual block device,
* to the first, addressable, discard extent on the underlying device.
*
* discard-granularity
* Values: <uint32_t>
* Default Value: <"sector-size">
* Notes: 4
*
* The size, in bytes, of the individually addressable discard extents
* of the underlying device.
*
* discard-secure
* Values: 0/1 (boolean)
* Default Value: 0
* Notes: 10
*
* A value of "1" indicates that the backend can process BLKIF_OP_DISCARD
* requests with the BLKIF_DISCARD_SECURE flag set.
*
* info
* Values: <uint32_t> (bitmap)
*
* A collection of bit flags describing attributes of the backing
* device. The VDISK_* macros define the meaning of each bit
* location.
*
* sector-size
* Values: <uint32_t>
*
* The logical block size, in bytes, of the underlying storage. This
* must be a power of two with a minimum value of 512.
*
* NOTE: Because of implementation bugs in some frontends this must be
* set to 512, unless the frontend advertizes a non-zero value
* in its "feature-large-sector-size" xenbus node. (See below).
*
* physical-sector-size
* Values: <uint32_t>
* Default Value: <"sector-size">
*
* The physical block size, in bytes, of the backend storage. This
* must be an integer multiple of "sector-size".
*
* sectors
* Values: <uint64_t>
*
* The size of the backend device, expressed in units of "sector-size".
* The product of "sector-size" and "sectors" must also be an integer
* multiple of "physical-sector-size", if that node is present.
*
*****************************************************************************
* Frontend XenBus Nodes
*****************************************************************************
*
*----------------------- Request Transport Parameters -----------------------
*
* event-channel
* Values: <uint32_t>
*
* The identifier of the Xen event channel used to signal activity
* in the ring buffer.
*
* ring-ref
* Values: <uint32_t>
* Notes: 6
*
* The Xen grant reference granting permission for the backend to map
* the sole page in a single page sized ring buffer.
*
* ring-ref%u
* Values: <uint32_t>
* Notes: 6
*
* For a frontend providing a multi-page ring, a "number of ring pages"
* sized list of nodes, each containing a Xen grant reference granting
* permission for the backend to map the page of the ring located
* at page index "%u". Page indexes are zero based.
*
* protocol
* Values: string (XEN_IO_PROTO_ABI_*)
* Default Value: XEN_IO_PROTO_ABI_NATIVE
*
* The machine ABI rules governing the format of all ring request and
* response structures.
*
* ring-page-order
* Values: <uint32_t>
* Default Value: 0
* Maximum Value: MAX(ffs(max-ring-pages) - 1, max-ring-page-order)
* Notes: 1, 3
*
* The size of the frontend allocated request ring buffer in units
* of lb(machine pages). (e.g. 0 == 1 page, 1 = 2 pages, 2 == 4 pages,
* etc.).
*
* num-ring-pages
* Values: <uint32_t>
* Default Value: 1
* Maximum Value: MAX(max-ring-pages,(0x1 << max-ring-page-order))
* Notes: DEPRECATED, 2, 3
*
* The size of the frontend allocated request ring buffer in units of
* machine pages. The value must be a power of 2.
*
*--------------------------------- Features ---------------------------------
*
* feature-persistent
* Values: 0/1 (boolean)
* Default Value: 0
* Notes: 7, 8, 9
*
* A value of "1" indicates that the frontend will reuse the same grants
* for all transactions, allowing the backend to map them with write
* access (even when it should be read-only). If the frontend hits the
* maximum number of allowed persistently mapped grants, it can fallback
* to non persistent mode. This will cause a performance degradation,
* since the the backend driver will still try to map those grants
* persistently. Since the persistent grants protocol is compatible with
* the previous protocol, a frontend driver can choose to work in
* persistent mode even when the backend doesn't support it.
*
* It is recommended that the frontend driver stores the persistently
* mapped grants in a LIFO queue, so a subset of all persistently mapped
* grants gets used commonly. This is done in case the backend driver
* decides to limit the maximum number of persistently mapped grants
* to a value less than RING_SIZE * BLKIF_MAX_SEGMENTS_PER_REQUEST.
*
* feature-large-sector-size
* Values: 0/1 (boolean)
* Default Value: 0
*
* A value of "1" indicates that the frontend will correctly supply and
* interpret all sector-based quantities in terms of the "sector-size"
* value supplied in the backend info, whatever that may be set to.
* If this node is not present or its value is "0" then it is assumed
* that the frontend requires that the logical block size is 512 as it
* is hardcoded (which is the case in some frontend implementations).
*
*------------------------- Virtual Device Properties -------------------------
*
* device-type
* Values: "disk", "cdrom", "floppy", etc.
*
* virtual-device
* Values: <uint32_t>
*
* A value indicating the physical device to virtualize within the
* frontend's domain. (e.g. "The first ATA disk", "The third SCSI
* disk", etc.)
*
* See docs/misc/vbd-interface.txt for details on the format of this
* value.
*
* Notes
* -----
* (1) Multi-page ring buffer scheme first developed in the Citrix XenServer
* PV drivers.
* (2) Multi-page ring buffer scheme first used in some RedHat distributions
* including a distribution deployed on certain nodes of the Amazon
* EC2 cluster.
* (3) Support for multi-page ring buffers was implemented independently,
* in slightly different forms, by both Citrix and RedHat/Amazon.
* For full interoperability, block front and backends should publish
* identical ring parameters, adjusted for unit differences, to the
* XenStore nodes used in both schemes.
* (4) Devices that support discard functionality may internally allocate space
* (discardable extents) in units that are larger than the exported logical
* block size. If the backing device has such discardable extents the
* backend should provide both discard-granularity and discard-alignment.
* Providing just one of the two may be considered an error by the frontend.
* Backends supporting discard should include discard-granularity and
* discard-alignment even if it supports discarding individual sectors.
* Frontends should assume discard-alignment == 0 and discard-granularity
* == sector size if these keys are missing.
* (5) The discard-alignment parameter allows a physical device to be
* partitioned into virtual devices that do not necessarily begin or
* end on a discardable extent boundary.
* (6) When there is only a single page allocated to the request ring,
* 'ring-ref' is used to communicate the grant reference for this
* page to the backend. When using a multi-page ring, the 'ring-ref'
* node is not created. Instead 'ring-ref0' - 'ring-refN' are used.
* (7) When using persistent grants data has to be copied from/to the page
* where the grant is currently mapped. The overhead of doing this copy
* however doesn't suppress the speed improvement of not having to unmap
* the grants.
* (8) The frontend driver has to allow the backend driver to map all grants
* with write access, even when they should be mapped read-only, since
* further requests may reuse these grants and require write permissions.
* (9) Linux implementation doesn't have a limit on the maximum number of
* grants that can be persistently mapped in the frontend driver, but
* due to the frontent driver implementation it should never be bigger
* than RING_SIZE * BLKIF_MAX_SEGMENTS_PER_REQUEST.
*(10) The discard-secure property may be present and will be set to 1 if the
* backing device supports secure discard.
*(11) Only used by Linux and NetBSD.
*/
/*
* Multiple hardware queues/rings:
* If supported, the backend will write the key "multi-queue-max-queues" to
* the directory for that vbd, and set its value to the maximum supported
* number of queues.
* Frontends that are aware of this feature and wish to use it can write the
* key "multi-queue-num-queues" with the number they wish to use, which must be
* greater than zero, and no more than the value reported by the backend in
* "multi-queue-max-queues".
*
* For frontends requesting just one queue, the usual event-channel and
* ring-ref keys are written as before, simplifying the backend processing
* to avoid distinguishing between a frontend that doesn't understand the
* multi-queue feature, and one that does, but requested only one queue.
*
* Frontends requesting two or more queues must not write the toplevel
* event-channel and ring-ref keys, instead writing those keys under sub-keys
* having the name "queue-N" where N is the integer ID of the queue/ring for
* which those keys belong. Queues are indexed from zero.
* For example, a frontend with two queues must write the following set of
* queue-related keys:
*
* /local/domain/1/device/vbd/0/multi-queue-num-queues = "2"
* /local/domain/1/device/vbd/0/queue-0 = ""
* /local/domain/1/device/vbd/0/queue-0/ring-ref = "<ring-ref#0>"
* /local/domain/1/device/vbd/0/queue-0/event-channel = "<evtchn#0>"
* /local/domain/1/device/vbd/0/queue-1 = ""
* /local/domain/1/device/vbd/0/queue-1/ring-ref = "<ring-ref#1>"
* /local/domain/1/device/vbd/0/queue-1/event-channel = "<evtchn#1>"
*
* It is also possible to use multiple queues/rings together with
* feature multi-page ring buffer.
* For example, a frontend requests two queues/rings and the size of each ring
* buffer is two pages must write the following set of related keys:
*
* /local/domain/1/device/vbd/0/multi-queue-num-queues = "2"
* /local/domain/1/device/vbd/0/ring-page-order = "1"
* /local/domain/1/device/vbd/0/queue-0 = ""
* /local/domain/1/device/vbd/0/queue-0/ring-ref0 = "<ring-ref#0>"
* /local/domain/1/device/vbd/0/queue-0/ring-ref1 = "<ring-ref#1>"
* /local/domain/1/device/vbd/0/queue-0/event-channel = "<evtchn#0>"
* /local/domain/1/device/vbd/0/queue-1 = ""
* /local/domain/1/device/vbd/0/queue-1/ring-ref0 = "<ring-ref#2>"
* /local/domain/1/device/vbd/0/queue-1/ring-ref1 = "<ring-ref#3>"
* /local/domain/1/device/vbd/0/queue-1/event-channel = "<evtchn#1>"
*
*/
/*
* STATE DIAGRAMS
*
*****************************************************************************
* Startup *
*****************************************************************************
*
* Tool stack creates front and back nodes with state XenbusStateInitialising.
*
* Front Back
* ================================= =====================================
* XenbusStateInitialising XenbusStateInitialising
* o Query virtual device o Query backend device identification
* properties. data.
* o Setup OS device instance. o Open and validate backend device.
* o Publish backend features and
* transport parameters.
* |
* |
* V
* XenbusStateInitWait
*
* o Query backend features and
* transport parameters.
* o Allocate and initialize the
* request ring.
* o Publish transport parameters
* that will be in effect during
* this connection.
* |
* |
* V
* XenbusStateInitialised
*
* o Query frontend transport parameters.
* o Connect to the request ring and
* event channel.
* o Publish backend device properties.
* |
* |
* V
* XenbusStateConnected
*
* o Query backend device properties.
* o Finalize OS virtual device
* instance.
* |
* |
* V
* XenbusStateConnected
*
* Note: Drivers that do not support any optional features, or the negotiation
* of transport parameters, can skip certain states in the state machine:
*
* o A frontend may transition to XenbusStateInitialised without
* waiting for the backend to enter XenbusStateInitWait. In this
* case, default transport parameters are in effect and any
* transport parameters published by the frontend must contain
* their default values.
*
* o A backend may transition to XenbusStateInitialised, bypassing
* XenbusStateInitWait, without waiting for the frontend to first
* enter the XenbusStateInitialised state. In this case, default
* transport parameters are in effect and any transport parameters
* published by the backend must contain their default values.
*
* Drivers that support optional features and/or transport parameter
* negotiation must tolerate these additional state transition paths.
* In general this means performing the work of any skipped state
* transition, if it has not already been performed, in addition to the
* work associated with entry into the current state.
*/
/*
* REQUEST CODES.
*/
#define BLKIF_OP_READ 0
#define BLKIF_OP_WRITE 1
/*
* All writes issued prior to a request with the BLKIF_OP_WRITE_BARRIER
* operation code ("barrier request") must be completed prior to the
* execution of the barrier request. All writes issued after the barrier
* request must not execute until after the completion of the barrier request.
*
* Optional. See "feature-barrier" XenBus node documentation above.
*/
#define BLKIF_OP_WRITE_BARRIER 2
/*
* Commit any uncommitted contents of the backing device's volatile cache
* to stable storage.
*
* Optional. See "feature-flush-cache" XenBus node documentation above.
*/
#define BLKIF_OP_FLUSH_DISKCACHE 3
/*
* Used in SLES sources for device specific command packet
* contained within the request. Reserved for that purpose.
*/
#define BLKIF_OP_RESERVED_1 4
/*
* Indicate to the backend device that a region of storage is no longer in
* use, and may be discarded at any time without impact to the client. If
* the BLKIF_DISCARD_SECURE flag is set on the request, all copies of the
* discarded region on the device must be rendered unrecoverable before the
* command returns.
*
* This operation is analogous to performing a trim (ATA) or unamp (SCSI),
* command on a native device.
*
* More information about trim/unmap operations can be found at:
* http://t13.org/Documents/UploadedDocuments/docs2008/
* e07154r6-Data_Set_Management_Proposal_for_ATA-ACS2.doc
* http://www.seagate.com/staticfiles/support/disc/manuals/
* Interface%20manuals/100293068c.pdf
*
* Optional. See "feature-discard", "discard-alignment",
* "discard-granularity", and "discard-secure" in the XenBus node
* documentation above.
*/
#define BLKIF_OP_DISCARD 5
/*
* Recognized if "feature-max-indirect-segments" in present in the backend
* xenbus info. The "feature-max-indirect-segments" node contains the maximum
* number of segments allowed by the backend per request. If the node is
* present, the frontend might use blkif_request_indirect structs in order to
* issue requests with more than BLKIF_MAX_SEGMENTS_PER_REQUEST (11). The
* maximum number of indirect segments is fixed by the backend, but the
* frontend can issue requests with any number of indirect segments as long as
* it's less than the number provided by the backend. The indirect_grefs field
* in blkif_request_indirect should be filled by the frontend with the
* grant references of the pages that are holding the indirect segments.
* These pages are filled with an array of blkif_request_segment that hold the
* information about the segments. The number of indirect pages to use is
* determined by the number of segments an indirect request contains. Every
* indirect page can contain a maximum of
* (PAGE_SIZE / sizeof(struct blkif_request_segment)) segments, so to
* calculate the number of indirect pages to use we have to do
* ceil(indirect_segments / (PAGE_SIZE / sizeof(struct blkif_request_segment))).
*
* If a backend does not recognize BLKIF_OP_INDIRECT, it should *not*
* create the "feature-max-indirect-segments" node!
*/
#define BLKIF_OP_INDIRECT 6
/*
* Maximum scatter/gather segments per request.
* This is carefully chosen so that sizeof(blkif_ring_t) <= PAGE_SIZE.
* NB. This could be 12 if the ring indexes weren't stored in the same page.
*/
#define BLKIF_MAX_SEGMENTS_PER_REQUEST 11
/*
* Maximum number of indirect pages to use per request.
*/
#define BLKIF_MAX_INDIRECT_PAGES_PER_REQUEST 8
/*
* NB. 'first_sect' and 'last_sect' in blkif_request_segment, as well as
* 'sector_number' in blkif_request, blkif_request_discard and
* blkif_request_indirect are sector-based quantities. See the description
* of the "feature-large-sector-size" frontend xenbus node above for
* more information.
*/
struct blkif_request_segment {
grant_ref_t gref; /* reference to I/O buffer frame */
/* @first_sect: first sector in frame to transfer (inclusive). */
/* @last_sect: last sector in frame to transfer (inclusive). */
uint8_t first_sect, last_sect;
};
/*
* Starting ring element for any I/O request.
*/
struct blkif_request {
uint8_t operation; /* BLKIF_OP_??? */
uint8_t nr_segments; /* number of segments */
blkif_vdev_t handle; /* only for read/write requests */
uint64_t id; /* private guest value, echoed in resp */
blkif_sector_t sector_number;/* start sector idx on disk (r/w only) */
struct blkif_request_segment seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];
};
typedef struct blkif_request blkif_request_t;
/*
* Cast to this structure when blkif_request.operation == BLKIF_OP_DISCARD
* sizeof(struct blkif_request_discard) <= sizeof(struct blkif_request)
*/
struct blkif_request_discard {
uint8_t operation; /* BLKIF_OP_DISCARD */
uint8_t flag; /* BLKIF_DISCARD_SECURE or zero */
#define BLKIF_DISCARD_SECURE (1<<0) /* ignored if discard-secure=0 */
blkif_vdev_t handle; /* same as for read/write requests */
uint64_t id; /* private guest value, echoed in resp */
blkif_sector_t sector_number;/* start sector idx on disk */
uint64_t nr_sectors; /* number of contiguous sectors to discard*/
};
typedef struct blkif_request_discard blkif_request_discard_t;
struct blkif_request_indirect {
uint8_t operation; /* BLKIF_OP_INDIRECT */
uint8_t indirect_op; /* BLKIF_OP_{READ/WRITE} */
uint16_t nr_segments; /* number of segments */
uint64_t id; /* private guest value, echoed in resp */
blkif_sector_t sector_number;/* start sector idx on disk (r/w only) */
blkif_vdev_t handle; /* same as for read/write requests */
grant_ref_t indirect_grefs[BLKIF_MAX_INDIRECT_PAGES_PER_REQUEST];
#ifdef __i386__
uint64_t pad; /* Make it 64 byte aligned on i386 */
#endif
};
typedef struct blkif_request_indirect blkif_request_indirect_t;
struct blkif_response {
uint64_t id; /* copied from request */
uint8_t operation; /* copied from request */
int16_t status; /* BLKIF_RSP_??? */
};
typedef struct blkif_response blkif_response_t;
/*
* STATUS RETURN CODES.
*/
/* Operation not supported (only happens on barrier writes). */
#define BLKIF_RSP_EOPNOTSUPP -2
/* Operation failed for some unspecified reason (-EIO). */
#define BLKIF_RSP_ERROR -1
/* Operation completed successfully. */
#define BLKIF_RSP_OKAY 0
/*
* Generate blkif ring structures and types.
*/
DEFINE_RING_TYPES(blkif, struct blkif_request, struct blkif_response);
#define VDISK_CDROM 0x1
#define VDISK_REMOVABLE 0x2
#define VDISK_READONLY 0x4
#endif /* __XEN_PUBLIC_IO_BLKIF_H__ */

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/******************************************************************************
* console.h
*
* Console I/O interface for Xen guest OSes.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (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.
*
* Copyright (c) 2005, Keir Fraser
*/
#ifndef __XEN_PUBLIC_IO_CONSOLE_H__
#define __XEN_PUBLIC_IO_CONSOLE_H__
typedef uint32_t XENCONS_RING_IDX;
#define MASK_XENCONS_IDX(idx, ring) ((idx) & (sizeof(ring)-1))
struct xencons_interface {
char in[1024];
char out[2048];
XENCONS_RING_IDX in_cons, in_prod;
XENCONS_RING_IDX out_cons, out_prod;
};
#ifdef XEN_WANT_FLEX_CONSOLE_RING
#include "ring.h"
DEFINE_XEN_FLEX_RING(xencons);
#endif
#endif /* __XEN_PUBLIC_IO_CONSOLE_H__ */

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/*
* fbif.h -- Xen virtual frame buffer device
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (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.
*
* Copyright (C) 2005 Anthony Liguori <aliguori@us.ibm.com>
* Copyright (C) 2006 Red Hat, Inc., Markus Armbruster <armbru@redhat.com>
*/
#ifndef __XEN_PUBLIC_IO_FBIF_H__
#define __XEN_PUBLIC_IO_FBIF_H__
/* Out events (frontend -> backend) */
/*
* Out events may be sent only when requested by backend, and receipt
* of an unknown out event is an error.
*/
/* Event type 1 currently not used */
/*
* Framebuffer update notification event
* Capable frontend sets feature-update in xenstore.
* Backend requests it by setting request-update in xenstore.
*/
#define XENFB_TYPE_UPDATE 2
struct xenfb_update
{
uint8_t type; /* XENFB_TYPE_UPDATE */
int32_t x; /* source x */
int32_t y; /* source y */
int32_t width; /* rect width */
int32_t height; /* rect height */
};
/*
* Framebuffer resize notification event
* Capable backend sets feature-resize in xenstore.
*/
#define XENFB_TYPE_RESIZE 3
struct xenfb_resize
{
uint8_t type; /* XENFB_TYPE_RESIZE */
int32_t width; /* width in pixels */
int32_t height; /* height in pixels */
int32_t stride; /* stride in bytes */
int32_t depth; /* depth in bits */
int32_t offset; /* offset of the framebuffer in bytes */
};
#define XENFB_OUT_EVENT_SIZE 40
union xenfb_out_event
{
uint8_t type;
struct xenfb_update update;
struct xenfb_resize resize;
char pad[XENFB_OUT_EVENT_SIZE];
};
/* In events (backend -> frontend) */
/*
* Frontends should ignore unknown in events.
*/
/*
* Framebuffer refresh period advice
* Backend sends it to advise the frontend their preferred period of
* refresh. Frontends that keep the framebuffer constantly up-to-date
* just ignore it. Frontends that use the advice should immediately
* refresh the framebuffer (and send an update notification event if
* those have been requested), then use the update frequency to guide
* their periodical refreshs.
*/
#define XENFB_TYPE_REFRESH_PERIOD 1
#define XENFB_NO_REFRESH 0
struct xenfb_refresh_period
{
uint8_t type; /* XENFB_TYPE_UPDATE_PERIOD */
uint32_t period; /* period of refresh, in ms,
* XENFB_NO_REFRESH if no refresh is needed */
};
#define XENFB_IN_EVENT_SIZE 40
union xenfb_in_event
{
uint8_t type;
struct xenfb_refresh_period refresh_period;
char pad[XENFB_IN_EVENT_SIZE];
};
/* shared page */
#define XENFB_IN_RING_SIZE 1024
#define XENFB_IN_RING_LEN (XENFB_IN_RING_SIZE / XENFB_IN_EVENT_SIZE)
#define XENFB_IN_RING_OFFS 1024
#define XENFB_IN_RING(page) \
((union xenfb_in_event *)((char *)(page) + XENFB_IN_RING_OFFS))
#define XENFB_IN_RING_REF(page, idx) \
(XENFB_IN_RING((page))[(idx) % XENFB_IN_RING_LEN])
#define XENFB_OUT_RING_SIZE 2048
#define XENFB_OUT_RING_LEN (XENFB_OUT_RING_SIZE / XENFB_OUT_EVENT_SIZE)
#define XENFB_OUT_RING_OFFS (XENFB_IN_RING_OFFS + XENFB_IN_RING_SIZE)
#define XENFB_OUT_RING(page) \
((union xenfb_out_event *)((char *)(page) + XENFB_OUT_RING_OFFS))
#define XENFB_OUT_RING_REF(page, idx) \
(XENFB_OUT_RING((page))[(idx) % XENFB_OUT_RING_LEN])
struct xenfb_page
{
uint32_t in_cons, in_prod;
uint32_t out_cons, out_prod;
int32_t width; /* the width of the framebuffer (in pixels) */
int32_t height; /* the height of the framebuffer (in pixels) */
uint32_t line_length; /* the length of a row of pixels (in bytes) */
uint32_t mem_length; /* the length of the framebuffer (in bytes) */
uint8_t depth; /* the depth of a pixel (in bits) */
/*
* Framebuffer page directory
*
* Each directory page holds PAGE_SIZE / sizeof(*pd)
* framebuffer pages, and can thus map up to PAGE_SIZE *
* PAGE_SIZE / sizeof(*pd) bytes. With PAGE_SIZE == 4096 and
* sizeof(unsigned long) == 4/8, that's 4 Megs 32 bit and 2 Megs
* 64 bit. 256 directories give enough room for a 512 Meg
* framebuffer with a max resolution of 12,800x10,240. Should
* be enough for a while with room leftover for expansion.
*/
unsigned long pd[256];
};
#endif

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/*
* kbdif.h -- Xen virtual keyboard/mouse
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (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.
*
* Copyright (C) 2005 Anthony Liguori <aliguori@us.ibm.com>
* Copyright (C) 2006 Red Hat, Inc., Markus Armbruster <armbru@redhat.com>
*/
#ifndef __XEN_PUBLIC_IO_KBDIF_H__
#define __XEN_PUBLIC_IO_KBDIF_H__
/*
*****************************************************************************
* Feature and Parameter Negotiation
*****************************************************************************
*
* The two halves of a para-virtual driver utilize nodes within
* XenStore to communicate capabilities and to negotiate operating parameters.
* This section enumerates these nodes which reside in the respective front and
* backend portions of XenStore, following XenBus convention.
*
* All data in XenStore is stored as strings. Nodes specifying numeric
* values are encoded in decimal. Integer value ranges listed below are
* expressed as fixed sized integer types capable of storing the conversion
* of a properly formated node string, without loss of information.
*
*****************************************************************************
* Backend XenBus Nodes
*****************************************************************************
*
*---------------------------- Features supported ----------------------------
*
* Capable backend advertises supported features by publishing
* corresponding entries in XenStore and puts 1 as the value of the entry.
* If a feature is not supported then 0 must be set or feature entry omitted.
*
* feature-disable-keyboard
* Values: <uint>
*
* If there is no need to expose a virtual keyboard device by the
* frontend then this must be set to 1.
*
* feature-disable-pointer
* Values: <uint>
*
* If there is no need to expose a virtual pointer device by the
* frontend then this must be set to 1.
*
* feature-abs-pointer
* Values: <uint>
*
* Backends, which support reporting of absolute coordinates for pointer
* device should set this to 1.
*
* feature-multi-touch
* Values: <uint>
*
* Backends, which support reporting of multi-touch events
* should set this to 1.
*
* feature-raw-pointer
* Values: <uint>
*
* Backends, which support reporting raw (unscaled) absolute coordinates
* for pointer devices should set this to 1. Raw (unscaled) values have
* a range of [0, 0x7fff].
*
*----------------------- Device Instance Parameters ------------------------
*
* unique-id
* Values: <string>
*
* After device instance initialization it is assigned a unique ID,
* so every instance of the frontend can be identified by the backend
* by this ID. This can be UUID or such.
*
*------------------------- Pointer Device Parameters ------------------------
*
* width
* Values: <uint>
*
* Maximum X coordinate (width) to be used by the frontend
* while reporting input events, pixels, [0; UINT32_MAX].
*
* height
* Values: <uint>
*
* Maximum Y coordinate (height) to be used by the frontend
* while reporting input events, pixels, [0; UINT32_MAX].
*
*----------------------- Multi-touch Device Parameters ----------------------
*
* multi-touch-num-contacts
* Values: <uint>
*
* Number of simultaneous touches reported.
*
* multi-touch-width
* Values: <uint>
*
* Width of the touch area to be used by the frontend
* while reporting input events, pixels, [0; UINT32_MAX].
*
* multi-touch-height
* Values: <uint>
*
* Height of the touch area to be used by the frontend
* while reporting input events, pixels, [0; UINT32_MAX].
*
*****************************************************************************
* Frontend XenBus Nodes
*****************************************************************************
*
*------------------------------ Feature request -----------------------------
*
* Capable frontend requests features from backend via setting corresponding
* entries to 1 in XenStore. Requests for features not advertised as supported
* by the backend have no effect.
*
* request-abs-pointer
* Values: <uint>
*
* Request backend to report absolute pointer coordinates
* (XENKBD_TYPE_POS) instead of relative ones (XENKBD_TYPE_MOTION).
*
* request-multi-touch
* Values: <uint>
*
* Request backend to report multi-touch events.
*
* request-raw-pointer
* Values: <uint>
*
* Request backend to report raw unscaled absolute pointer coordinates.
* This option is only valid if request-abs-pointer is also set.
* Raw unscaled coordinates have the range [0, 0x7fff]
*
*----------------------- Request Transport Parameters -----------------------
*
* event-channel
* Values: <uint>
*
* The identifier of the Xen event channel used to signal activity
* in the ring buffer.
*
* page-gref
* Values: <uint>
*
* The Xen grant reference granting permission for the backend to map
* a sole page in a single page sized event ring buffer.
*
* page-ref
* Values: <uint>
*
* OBSOLETE, not recommended for use.
* PFN of the shared page.
*/
/*
* EVENT CODES.
*/
#define XENKBD_TYPE_MOTION 1
#define XENKBD_TYPE_RESERVED 2
#define XENKBD_TYPE_KEY 3
#define XENKBD_TYPE_POS 4
#define XENKBD_TYPE_MTOUCH 5
/* Multi-touch event sub-codes */
#define XENKBD_MT_EV_DOWN 0
#define XENKBD_MT_EV_UP 1
#define XENKBD_MT_EV_MOTION 2
#define XENKBD_MT_EV_SYN 3
#define XENKBD_MT_EV_SHAPE 4
#define XENKBD_MT_EV_ORIENT 5
/*
* CONSTANTS, XENSTORE FIELD AND PATH NAME STRINGS, HELPERS.
*/
#define XENKBD_DRIVER_NAME "vkbd"
#define XENKBD_FIELD_FEAT_DSBL_KEYBRD "feature-disable-keyboard"
#define XENKBD_FIELD_FEAT_DSBL_POINTER "feature-disable-pointer"
#define XENKBD_FIELD_FEAT_ABS_POINTER "feature-abs-pointer"
#define XENKBD_FIELD_FEAT_RAW_POINTER "feature-raw-pointer"
#define XENKBD_FIELD_FEAT_MTOUCH "feature-multi-touch"
#define XENKBD_FIELD_REQ_ABS_POINTER "request-abs-pointer"
#define XENKBD_FIELD_REQ_RAW_POINTER "request-raw-pointer"
#define XENKBD_FIELD_REQ_MTOUCH "request-multi-touch"
#define XENKBD_FIELD_RING_GREF "page-gref"
#define XENKBD_FIELD_EVT_CHANNEL "event-channel"
#define XENKBD_FIELD_WIDTH "width"
#define XENKBD_FIELD_HEIGHT "height"
#define XENKBD_FIELD_MT_WIDTH "multi-touch-width"
#define XENKBD_FIELD_MT_HEIGHT "multi-touch-height"
#define XENKBD_FIELD_MT_NUM_CONTACTS "multi-touch-num-contacts"
#define XENKBD_FIELD_UNIQUE_ID "unique-id"
/* OBSOLETE, not recommended for use */
#define XENKBD_FIELD_RING_REF "page-ref"
/*
*****************************************************************************
* Description of the protocol between frontend and backend driver.
*****************************************************************************
*
* The two halves of a Para-virtual driver communicate with
* each other using a shared page and an event channel.
* Shared page contains a ring with event structures.
*
* All reserved fields in the structures below must be 0.
*
*****************************************************************************
* Backend to frontend events
*****************************************************************************
*
* Frontends should ignore unknown in events.
* All event packets have the same length (40 octets)
* All event packets have common header:
*
* 0 octet
* +-----------------+
* | type |
* +-----------------+
* type - uint8_t, event code, XENKBD_TYPE_???
*
*
* Pointer relative movement event
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_MOTION | reserved | 4
* +----------------+----------------+----------------+----------------+
* | rel_x | 8
* +----------------+----------------+----------------+----------------+
* | rel_y | 12
* +----------------+----------------+----------------+----------------+
* | rel_z | 16
* +----------------+----------------+----------------+----------------+
* | reserved | 20
* +----------------+----------------+----------------+----------------+
* |/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/|
* +----------------+----------------+----------------+----------------+
* | reserved | 40
* +----------------+----------------+----------------+----------------+
*
* rel_x - int32_t, relative X motion
* rel_y - int32_t, relative Y motion
* rel_z - int32_t, relative Z motion (wheel)
*/
struct xenkbd_motion
{
uint8_t type;
int32_t rel_x;
int32_t rel_y;
int32_t rel_z;
};
/*
* Key event (includes pointer buttons)
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_KEY | pressed | reserved | 4
* +----------------+----------------+----------------+----------------+
* | keycode | 8
* +----------------+----------------+----------------+----------------+
* | reserved | 12
* +----------------+----------------+----------------+----------------+
* |/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/|
* +----------------+----------------+----------------+----------------+
* | reserved | 40
* +----------------+----------------+----------------+----------------+
*
* pressed - uint8_t, 1 if pressed; 0 otherwise
* keycode - uint32_t, KEY_* from linux/input.h
*/
struct xenkbd_key
{
uint8_t type;
uint8_t pressed;
uint32_t keycode;
};
/*
* Pointer absolute position event
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_POS | reserved | 4
* +----------------+----------------+----------------+----------------+
* | abs_x | 8
* +----------------+----------------+----------------+----------------+
* | abs_y | 12
* +----------------+----------------+----------------+----------------+
* | rel_z | 16
* +----------------+----------------+----------------+----------------+
* | reserved | 20
* +----------------+----------------+----------------+----------------+
* |/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/|
* +----------------+----------------+----------------+----------------+
* | reserved | 40
* +----------------+----------------+----------------+----------------+
*
* abs_x - int32_t, absolute X position (in FB pixels)
* abs_y - int32_t, absolute Y position (in FB pixels)
* rel_z - int32_t, relative Z motion (wheel)
*/
struct xenkbd_position
{
uint8_t type;
int32_t abs_x;
int32_t abs_y;
int32_t rel_z;
};
/*
* Multi-touch event and its sub-types
*
* All multi-touch event packets have common header:
*
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_MTOUCH | event_type | contact_id | reserved | 4
* +----------------+----------------+----------------+----------------+
* | reserved | 8
* +----------------+----------------+----------------+----------------+
*
* event_type - unt8_t, multi-touch event sub-type, XENKBD_MT_EV_???
* contact_id - unt8_t, ID of the contact
*
* Touch interactions can consist of one or more contacts.
* For each contact, a series of events is generated, starting
* with a down event, followed by zero or more motion events,
* and ending with an up event. Events relating to the same
* contact point can be identified by the ID of the sequence: contact ID.
* Contact ID may be reused after XENKBD_MT_EV_UP event and
* is in the [0; XENKBD_FIELD_NUM_CONTACTS - 1] range.
*
* For further information please refer to documentation on Wayland [1],
* Linux [2] and Windows [3] multi-touch support.
*
* [1] https://cgit.freedesktop.org/wayland/wayland/tree/protocol/wayland.xml
* [2] https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt
* [3] https://msdn.microsoft.com/en-us/library/jj151564(v=vs.85).aspx
*
*
* Multi-touch down event - sent when a new touch is made: touch is assigned
* a unique contact ID, sent with this and consequent events related
* to this touch.
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_MTOUCH | _MT_EV_DOWN | contact_id | reserved | 4
* +----------------+----------------+----------------+----------------+
* | reserved | 8
* +----------------+----------------+----------------+----------------+
* | abs_x | 12
* +----------------+----------------+----------------+----------------+
* | abs_y | 16
* +----------------+----------------+----------------+----------------+
* | reserved | 20
* +----------------+----------------+----------------+----------------+
* |/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/|
* +----------------+----------------+----------------+----------------+
* | reserved | 40
* +----------------+----------------+----------------+----------------+
*
* abs_x - int32_t, absolute X position, in pixels
* abs_y - int32_t, absolute Y position, in pixels
*
* Multi-touch contact release event
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_MTOUCH | _MT_EV_UP | contact_id | reserved | 4
* +----------------+----------------+----------------+----------------+
* | reserved | 8
* +----------------+----------------+----------------+----------------+
* |/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/|
* +----------------+----------------+----------------+----------------+
* | reserved | 40
* +----------------+----------------+----------------+----------------+
*
* Multi-touch motion event
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_MTOUCH | _MT_EV_MOTION | contact_id | reserved | 4
* +----------------+----------------+----------------+----------------+
* | reserved | 8
* +----------------+----------------+----------------+----------------+
* | abs_x | 12
* +----------------+----------------+----------------+----------------+
* | abs_y | 16
* +----------------+----------------+----------------+----------------+
* | reserved | 20
* +----------------+----------------+----------------+----------------+
* |/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/|
* +----------------+----------------+----------------+----------------+
* | reserved | 40
* +----------------+----------------+----------------+----------------+
*
* abs_x - int32_t, absolute X position, in pixels,
* abs_y - int32_t, absolute Y position, in pixels,
*
* Multi-touch input synchronization event - shows end of a set of events
* which logically belong together.
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_MTOUCH | _MT_EV_SYN | contact_id | reserved | 4
* +----------------+----------------+----------------+----------------+
* | reserved | 8
* +----------------+----------------+----------------+----------------+
* |/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/|
* +----------------+----------------+----------------+----------------+
* | reserved | 40
* +----------------+----------------+----------------+----------------+
*
* Multi-touch shape event - touch point's shape has changed its shape.
* Shape is approximated by an ellipse through the major and minor axis
* lengths: major is the longer diameter of the ellipse and minor is the
* shorter one. Center of the ellipse is reported via
* XENKBD_MT_EV_DOWN/XENKBD_MT_EV_MOTION events.
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_MTOUCH | _MT_EV_SHAPE | contact_id | reserved | 4
* +----------------+----------------+----------------+----------------+
* | reserved | 8
* +----------------+----------------+----------------+----------------+
* | major | 12
* +----------------+----------------+----------------+----------------+
* | minor | 16
* +----------------+----------------+----------------+----------------+
* | reserved | 20
* +----------------+----------------+----------------+----------------+
* |/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/|
* +----------------+----------------+----------------+----------------+
* | reserved | 40
* +----------------+----------------+----------------+----------------+
*
* major - unt32_t, length of the major axis, pixels
* minor - unt32_t, length of the minor axis, pixels
*
* Multi-touch orientation event - touch point's shape has changed
* its orientation: calculated as a clockwise angle between the major axis
* of the ellipse and positive Y axis in degrees, [-180; +180].
* 0 1 2 3 octet
* +----------------+----------------+----------------+----------------+
* | _TYPE_MTOUCH | _MT_EV_ORIENT | contact_id | reserved | 4
* +----------------+----------------+----------------+----------------+
* | reserved | 8
* +----------------+----------------+----------------+----------------+
* | orientation | reserved | 12
* +----------------+----------------+----------------+----------------+
* | reserved | 16
* +----------------+----------------+----------------+----------------+
* |/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/|
* +----------------+----------------+----------------+----------------+
* | reserved | 40
* +----------------+----------------+----------------+----------------+
*
* orientation - int16_t, clockwise angle of the major axis
*/
struct xenkbd_mtouch {
uint8_t type; /* XENKBD_TYPE_MTOUCH */
uint8_t event_type; /* XENKBD_MT_EV_??? */
uint8_t contact_id;
uint8_t reserved[5]; /* reserved for the future use */
union {
struct {
int32_t abs_x; /* absolute X position, pixels */
int32_t abs_y; /* absolute Y position, pixels */
} pos;
struct {
uint32_t major; /* length of the major axis, pixels */
uint32_t minor; /* length of the minor axis, pixels */
} shape;
int16_t orientation; /* clockwise angle of the major axis */
} u;
};
#define XENKBD_IN_EVENT_SIZE 40
union xenkbd_in_event
{
uint8_t type;
struct xenkbd_motion motion;
struct xenkbd_key key;
struct xenkbd_position pos;
struct xenkbd_mtouch mtouch;
char pad[XENKBD_IN_EVENT_SIZE];
};
/*
*****************************************************************************
* Frontend to backend events
*****************************************************************************
*
* Out events may be sent only when requested by backend, and receipt
* of an unknown out event is an error.
* No out events currently defined.
* All event packets have the same length (40 octets)
* All event packets have common header:
* 0 octet
* +-----------------+
* | type |
* +-----------------+
* type - uint8_t, event code
*/
#define XENKBD_OUT_EVENT_SIZE 40
union xenkbd_out_event
{
uint8_t type;
char pad[XENKBD_OUT_EVENT_SIZE];
};
/*
*****************************************************************************
* Shared page
*****************************************************************************
*/
#define XENKBD_IN_RING_SIZE 2048
#define XENKBD_IN_RING_LEN (XENKBD_IN_RING_SIZE / XENKBD_IN_EVENT_SIZE)
#define XENKBD_IN_RING_OFFS 1024
#define XENKBD_IN_RING(page) \
((union xenkbd_in_event *)((char *)(page) + XENKBD_IN_RING_OFFS))
#define XENKBD_IN_RING_REF(page, idx) \
(XENKBD_IN_RING((page))[(idx) % XENKBD_IN_RING_LEN])
#define XENKBD_OUT_RING_SIZE 1024
#define XENKBD_OUT_RING_LEN (XENKBD_OUT_RING_SIZE / XENKBD_OUT_EVENT_SIZE)
#define XENKBD_OUT_RING_OFFS (XENKBD_IN_RING_OFFS + XENKBD_IN_RING_SIZE)
#define XENKBD_OUT_RING(page) \
((union xenkbd_out_event *)((char *)(page) + XENKBD_OUT_RING_OFFS))
#define XENKBD_OUT_RING_REF(page, idx) \
(XENKBD_OUT_RING((page))[(idx) % XENKBD_OUT_RING_LEN])
struct xenkbd_page
{
uint32_t in_cons, in_prod;
uint32_t out_cons, out_prod;
};
#endif /* __XEN_PUBLIC_IO_KBDIF_H__ */

1010
include/hw/xen/interface/io/netif.h Normal file
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42
include/hw/xen/interface/io/protocols.h Normal file
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/******************************************************************************
* protocols.h
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (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.
*
* Copyright (c) 2008, Keir Fraser
*/
#ifndef __XEN_PROTOCOLS_H__
#define __XEN_PROTOCOLS_H__
#define XEN_IO_PROTO_ABI_X86_32 "x86_32-abi"
#define XEN_IO_PROTO_ABI_X86_64 "x86_64-abi"
#define XEN_IO_PROTO_ABI_ARM "arm-abi"
#if defined(__i386__)
# define XEN_IO_PROTO_ABI_NATIVE XEN_IO_PROTO_ABI_X86_32
#elif defined(__x86_64__)
# define XEN_IO_PROTO_ABI_NATIVE XEN_IO_PROTO_ABI_X86_64
#elif defined(__arm__) || defined(__aarch64__)
# define XEN_IO_PROTO_ABI_NATIVE XEN_IO_PROTO_ABI_ARM
#else
# error arch fixup needed here
#endif
#endif

0
include/hw/xen/io/ring.h → include/hw/xen/interface/io/ring.h
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include/hw/xen/interface/io/usbif.h Normal file
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/*
* usbif.h
*
* USB I/O interface for Xen guest OSes.
*
* Copyright (C) 2009, FUJITSU LABORATORIES LTD.
* Author: Noboru Iwamatsu <n_iwamatsu@jp.fujitsu.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (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 __XEN_PUBLIC_IO_USBIF_H__
#define __XEN_PUBLIC_IO_USBIF_H__
#include "ring.h"
#include "../grant_table.h"
/*
* Feature and Parameter Negotiation
* =================================
* The two halves of a Xen pvUSB driver utilize nodes within the XenStore to
* communicate capabilities and to negotiate operating parameters. This
* section enumerates these nodes which reside in the respective front and
* backend portions of the XenStore, following the XenBus convention.
*
* Any specified default value is in effect if the corresponding XenBus node
* is not present in the XenStore.
*
* XenStore nodes in sections marked "PRIVATE" are solely for use by the
* driver side whose XenBus tree contains them.
*
*****************************************************************************
* Backend XenBus Nodes
*****************************************************************************
*
*------------------ Backend Device Identification (PRIVATE) ------------------
*
* num-ports
* Values: unsigned [1...31]
*
* Number of ports for this (virtual) USB host connector.
*
* usb-ver
* Values: unsigned [1...2]
*
* USB version of this host connector: 1 = USB 1.1, 2 = USB 2.0.
*
* port/[1...31]
* Values: string
*
* Physical USB device connected to the given port, e.g. "3-1.5".
*
*****************************************************************************
* Frontend XenBus Nodes
*****************************************************************************
*
*----------------------- Request Transport Parameters -----------------------
*
* event-channel
* Values: unsigned
*
* The identifier of the Xen event channel used to signal activity
* in the ring buffer.
*
* urb-ring-ref
* Values: unsigned
*
* The Xen grant reference granting permission for the backend to map
* the sole page in a single page sized ring buffer. This is the ring
* buffer for urb requests.
*
* conn-ring-ref
* Values: unsigned
*
* The Xen grant reference granting permission for the backend to map
* the sole page in a single page sized ring buffer. This is the ring
* buffer for connection/disconnection requests.
*
* protocol
* Values: string (XEN_IO_PROTO_ABI_*)
* Default Value: XEN_IO_PROTO_ABI_NATIVE
*
* The machine ABI rules governing the format of all ring request and
* response structures.
*
*/
enum usb_spec_version {
USB_VER_UNKNOWN = 0,
USB_VER_USB11,
USB_VER_USB20,
USB_VER_USB30, /* not supported yet */
};
/*
* USB pipe in usbif_request
*
* - port number: bits 0-4
* (USB_MAXCHILDREN is 31)
*
* - operation flag: bit 5
* (0 = submit urb,
* 1 = unlink urb)
*
* - direction: bit 7
* (0 = Host-to-Device [Out]
* 1 = Device-to-Host [In])
*
* - device address: bits 8-14
*
* - endpoint: bits 15-18
*
* - pipe type: bits 30-31
* (00 = isochronous, 01 = interrupt,
* 10 = control, 11 = bulk)
*/
#define USBIF_PIPE_PORT_MASK 0x0000001f
#define USBIF_PIPE_UNLINK 0x00000020
#define USBIF_PIPE_DIR 0x00000080
#define USBIF_PIPE_DEV_MASK 0x0000007f
#define USBIF_PIPE_DEV_SHIFT 8
#define USBIF_PIPE_EP_MASK 0x0000000f
#define USBIF_PIPE_EP_SHIFT 15
#define USBIF_PIPE_TYPE_MASK 0x00000003
#define USBIF_PIPE_TYPE_SHIFT 30
#define USBIF_PIPE_TYPE_ISOC 0
#define USBIF_PIPE_TYPE_INT 1
#define USBIF_PIPE_TYPE_CTRL 2
#define USBIF_PIPE_TYPE_BULK 3
#define usbif_pipeportnum(pipe) ((pipe) & USBIF_PIPE_PORT_MASK)
#define usbif_setportnum_pipe(pipe, portnum) ((pipe) | (portnum))
#define usbif_pipeunlink(pipe) ((pipe) & USBIF_PIPE_UNLINK)
#define usbif_pipesubmit(pipe) (!usbif_pipeunlink(pipe))
#define usbif_setunlink_pipe(pipe) ((pipe) | USBIF_PIPE_UNLINK)
#define usbif_pipein(pipe) ((pipe) & USBIF_PIPE_DIR)
#define usbif_pipeout(pipe) (!usbif_pipein(pipe))
#define usbif_pipedevice(pipe) \
(((pipe) >> USBIF_PIPE_DEV_SHIFT) & USBIF_PIPE_DEV_MASK)
#define usbif_pipeendpoint(pipe) \
(((pipe) >> USBIF_PIPE_EP_SHIFT) & USBIF_PIPE_EP_MASK)
#define usbif_pipetype(pipe) \
(((pipe) >> USBIF_PIPE_TYPE_SHIFT) & USBIF_PIPE_TYPE_MASK)
#define usbif_pipeisoc(pipe) (usbif_pipetype(pipe) == USBIF_PIPE_TYPE_ISOC)
#define usbif_pipeint(pipe) (usbif_pipetype(pipe) == USBIF_PIPE_TYPE_INT)
#define usbif_pipectrl(pipe) (usbif_pipetype(pipe) == USBIF_PIPE_TYPE_CTRL)
#define usbif_pipebulk(pipe) (usbif_pipetype(pipe) == USBIF_PIPE_TYPE_BULK)
#define USBIF_MAX_SEGMENTS_PER_REQUEST (16)
#define USBIF_MAX_PORTNR 31
#define USBIF_RING_SIZE 4096
/*
* RING for transferring urbs.
*/
struct usbif_request_segment {
grant_ref_t gref;
uint16_t offset;
uint16_t length;
};
struct usbif_urb_request {
uint16_t id; /* request id */
uint16_t nr_buffer_segs; /* number of urb->transfer_buffer segments */
/* basic urb parameter */
uint32_t pipe;
uint16_t transfer_flags;
#define USBIF_SHORT_NOT_OK 0x0001
uint16_t buffer_length;
union {
uint8_t ctrl[8]; /* setup_packet (Ctrl) */
struct {
uint16_t interval; /* maximum (1024*8) in usb core */
uint16_t start_frame; /* start frame */
uint16_t number_of_packets; /* number of ISO packet */
uint16_t nr_frame_desc_segs; /* number of iso_frame_desc segments */
} isoc;
struct {
uint16_t interval; /* maximum (1024*8) in usb core */
uint16_t pad[3];
} intr;
struct {
uint16_t unlink_id; /* unlink request id */
uint16_t pad[3];
} unlink;
} u;
/* urb data segments */
struct usbif_request_segment seg[USBIF_MAX_SEGMENTS_PER_REQUEST];
};
typedef struct usbif_urb_request usbif_urb_request_t;
struct usbif_urb_response {
uint16_t id; /* request id */
uint16_t start_frame; /* start frame (ISO) */
int32_t status; /* status (non-ISO) */
int32_t actual_length; /* actual transfer length */
int32_t error_count; /* number of ISO errors */
};
typedef struct usbif_urb_response usbif_urb_response_t;
DEFINE_RING_TYPES(usbif_urb, struct usbif_urb_request, struct usbif_urb_response);
#define USB_URB_RING_SIZE __CONST_RING_SIZE(usbif_urb, USBIF_RING_SIZE)
/*
* RING for notifying connect/disconnect events to frontend
*/
struct usbif_conn_request {
uint16_t id;
};
typedef struct usbif_conn_request usbif_conn_request_t;
struct usbif_conn_response {
uint16_t id; /* request id */
uint8_t portnum; /* port number */
uint8_t speed; /* usb_device_speed */
#define USBIF_SPEED_NONE 0
#define USBIF_SPEED_LOW 1
#define USBIF_SPEED_FULL 2
#define USBIF_SPEED_HIGH 3
};
typedef struct usbif_conn_response usbif_conn_response_t;
DEFINE_RING_TYPES(usbif_conn, struct usbif_conn_request, struct usbif_conn_response);
#define USB_CONN_RING_SIZE __CONST_RING_SIZE(usbif_conn, USBIF_RING_SIZE)
#endif /* __XEN_PUBLIC_IO_USBIF_H__ */

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include/hw/xen/interface/io/xenbus.h Normal file
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/*****************************************************************************
* xenbus.h
*
* Xenbus protocol details.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (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.
*
* Copyright (C) 2005 XenSource Ltd.
*/
#ifndef _XEN_PUBLIC_IO_XENBUS_H
#define _XEN_PUBLIC_IO_XENBUS_H
/*
* The state of either end of the Xenbus, i.e. the current communication
* status of initialisation across the bus. States here imply nothing about
* the state of the connection between the driver and the kernel's device
* layers.
*/
enum xenbus_state {
XenbusStateUnknown = 0,
XenbusStateInitialising = 1,
/*
* InitWait: Finished early initialisation but waiting for information
* from the peer or hotplug scripts.
*/
XenbusStateInitWait = 2,
/*
* Initialised: Waiting for a connection from the peer.
*/
XenbusStateInitialised = 3,
XenbusStateConnected = 4,
/*
* Closing: The device is being closed due to an error or an unplug event.
*/
XenbusStateClosing = 5,
XenbusStateClosed = 6,
/*
* Reconfiguring: The device is being reconfigured.
*/
XenbusStateReconfiguring = 7,
XenbusStateReconfigured = 8
};
typedef enum xenbus_state XenbusState;
#endif /* _XEN_PUBLIC_IO_XENBUS_H */

2
include/hw/xen/xen_common.h
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@ -12,7 +12,7 @@
#include <xenctrl.h>
#include <xenstore.h>
#include <xen/io/xenbus.h>
#include "hw/xen/interface/io/xenbus.h"
#include "hw/hw.h"
#include "hw/xen/xen.h"