/******************************************************************************
* event_channel.h
- *
- * Event channels between domains.
- *
- * 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.
+ * Event channels between domains.
*
* Copyright (c) 2003-2004, K A Fraser.
*/
#ifndef __XEN_PUBLIC_EVENT_CHANNEL_H__
#define __XEN_PUBLIC_EVENT_CHANNEL_H__
-/*
- * Prototype for this hypercall is:
- * int event_channel_op(int cmd, void *args)
- * @cmd == EVTCHNOP_??? (event-channel operation).
- * @args == Operation-specific extra arguments (NULL if none).
- */
-
typedef uint32_t evtchn_port_t;
-DEFINE_XEN_GUEST_HANDLE(evtchn_port_t);
+DEFINE_GUEST_HANDLE(evtchn_port_t);
/*
* EVTCHNOP_alloc_unbound: Allocate a port in domain <dom> and mark as
* 1. If the caller is unprivileged then <dom> must be DOMID_SELF.
* 2. <rdom> may be DOMID_SELF, allowing loopback connections.
*/
-#define EVTCHNOP_alloc_unbound 6
+#define EVTCHNOP_alloc_unbound 6
struct evtchn_alloc_unbound {
- /* IN parameters */
- domid_t dom, remote_dom;
- /* OUT parameters */
- evtchn_port_t port;
+ /* IN parameters */
+ domid_t dom, remote_dom;
+ /* OUT parameters */
+ evtchn_port_t port;
};
-typedef struct evtchn_alloc_unbound evtchn_alloc_unbound_t;
/*
* EVTCHNOP_bind_interdomain: Construct an interdomain event channel between
*/
#define EVTCHNOP_bind_interdomain 0
struct evtchn_bind_interdomain {
- /* IN parameters. */
- domid_t remote_dom;
- evtchn_port_t remote_port;
- /* OUT parameters. */
- evtchn_port_t local_port;
+ /* IN parameters. */
+ domid_t remote_dom;
+ evtchn_port_t remote_port;
+ /* OUT parameters. */
+ evtchn_port_t local_port;
};
-typedef struct evtchn_bind_interdomain evtchn_bind_interdomain_t;
/*
* EVTCHNOP_bind_virq: Bind a local event channel to VIRQ <irq> on specified
* vcpu.
* NOTES:
- * 1. Virtual IRQs are classified as per-vcpu or global. See the VIRQ list
- * in xen.h for the classification of each VIRQ.
- * 2. Global VIRQs must be allocated on VCPU0 but can subsequently be
- * re-bound via EVTCHNOP_bind_vcpu.
- * 3. Per-vcpu VIRQs may be bound to at most one event channel per vcpu.
- * The allocated event channel is bound to the specified vcpu and the
- * binding cannot be changed.
+ * 1. A virtual IRQ may be bound to at most one event channel per vcpu.
+ * 2. The allocated event channel is bound to the specified vcpu. The binding
+ * may not be changed.
*/
-#define EVTCHNOP_bind_virq 1
+#define EVTCHNOP_bind_virq 1
struct evtchn_bind_virq {
- /* IN parameters. */
- uint32_t virq;
- uint32_t vcpu;
- /* OUT parameters. */
- evtchn_port_t port;
+ /* IN parameters. */
+ uint32_t virq;
+ uint32_t vcpu;
+ /* OUT parameters. */
+ evtchn_port_t port;
};
-typedef struct evtchn_bind_virq evtchn_bind_virq_t;
/*
* EVTCHNOP_bind_pirq: Bind a local event channel to PIRQ <irq>.
* 1. A physical IRQ may be bound to at most one event channel per domain.
* 2. Only a sufficiently-privileged domain may bind to a physical IRQ.
*/
-#define EVTCHNOP_bind_pirq 2
+#define EVTCHNOP_bind_pirq 2
struct evtchn_bind_pirq {
- /* IN parameters. */
- uint32_t pirq;
+ /* IN parameters. */
+ uint32_t pirq;
#define BIND_PIRQ__WILL_SHARE 1
- uint32_t flags; /* BIND_PIRQ__* */
- /* OUT parameters. */
- evtchn_port_t port;
+ uint32_t flags; /* BIND_PIRQ__* */
+ /* OUT parameters. */
+ evtchn_port_t port;
};
-typedef struct evtchn_bind_pirq evtchn_bind_pirq_t;
/*
* EVTCHNOP_bind_ipi: Bind a local event channel to receive events.
* 1. The allocated event channel is bound to the specified vcpu. The binding
* may not be changed.
*/
-#define EVTCHNOP_bind_ipi 7
+#define EVTCHNOP_bind_ipi 7
struct evtchn_bind_ipi {
- uint32_t vcpu;
- /* OUT parameters. */
- evtchn_port_t port;
+ uint32_t vcpu;
+ /* OUT parameters. */
+ evtchn_port_t port;
};
-typedef struct evtchn_bind_ipi evtchn_bind_ipi_t;
/*
* EVTCHNOP_close: Close a local event channel <port>. If the channel is
* interdomain then the remote end is placed in the unbound state
* (EVTCHNSTAT_unbound), awaiting a new connection.
*/
-#define EVTCHNOP_close 3
+#define EVTCHNOP_close 3
struct evtchn_close {
- /* IN parameters. */
- evtchn_port_t port;
+ /* IN parameters. */
+ evtchn_port_t port;
};
-typedef struct evtchn_close evtchn_close_t;
/*
* EVTCHNOP_send: Send an event to the remote end of the channel whose local
* endpoint is <port>.
*/
-#define EVTCHNOP_send 4
+#define EVTCHNOP_send 4
struct evtchn_send {
- /* IN parameters. */
- evtchn_port_t port;
+ /* IN parameters. */
+ evtchn_port_t port;
};
-typedef struct evtchn_send evtchn_send_t;
/*
* EVTCHNOP_status: Get the current status of the communication channel which
* 2. Only a sufficiently-privileged domain may obtain the status of an event
* channel for which <dom> is not DOMID_SELF.
*/
-#define EVTCHNOP_status 5
+#define EVTCHNOP_status 5
struct evtchn_status {
- /* IN parameters */
- domid_t dom;
- evtchn_port_t port;
- /* OUT parameters */
-#define EVTCHNSTAT_closed 0 /* Channel is not in use. */
-#define EVTCHNSTAT_unbound 1 /* Channel is waiting interdom connection.*/
-#define EVTCHNSTAT_interdomain 2 /* Channel is connected to remote domain. */
-#define EVTCHNSTAT_pirq 3 /* Channel is bound to a phys IRQ line. */
-#define EVTCHNSTAT_virq 4 /* Channel is bound to a virtual IRQ line */
-#define EVTCHNSTAT_ipi 5 /* Channel is bound to a virtual IPI line */
- uint32_t status;
- uint32_t vcpu; /* VCPU to which this channel is bound. */
- union {
- struct {
- domid_t dom;
- } unbound; /* EVTCHNSTAT_unbound */
- struct {
- domid_t dom;
- evtchn_port_t port;
- } interdomain; /* EVTCHNSTAT_interdomain */
- uint32_t pirq; /* EVTCHNSTAT_pirq */
- uint32_t virq; /* EVTCHNSTAT_virq */
- } u;
+ /* IN parameters */
+ domid_t dom;
+ evtchn_port_t port;
+ /* OUT parameters */
+#define EVTCHNSTAT_closed 0 /* Channel is not in use. */
+#define EVTCHNSTAT_unbound 1 /* Channel is waiting interdom connection.*/
+#define EVTCHNSTAT_interdomain 2 /* Channel is connected to remote domain. */
+#define EVTCHNSTAT_pirq 3 /* Channel is bound to a phys IRQ line. */
+#define EVTCHNSTAT_virq 4 /* Channel is bound to a virtual IRQ line */
+#define EVTCHNSTAT_ipi 5 /* Channel is bound to a virtual IPI line */
+ uint32_t status;
+ uint32_t vcpu; /* VCPU to which this channel is bound. */
+ union {
+ struct {
+ domid_t dom;
+ } unbound; /* EVTCHNSTAT_unbound */
+ struct {
+ domid_t dom;
+ evtchn_port_t port;
+ } interdomain; /* EVTCHNSTAT_interdomain */
+ uint32_t pirq; /* EVTCHNSTAT_pirq */
+ uint32_t virq; /* EVTCHNSTAT_virq */
+ } u;
};
-typedef struct evtchn_status evtchn_status_t;
/*
* EVTCHNOP_bind_vcpu: Specify which vcpu a channel should notify when an
* event is pending.
* NOTES:
- * 1. IPI-bound channels always notify the vcpu specified at bind time.
- * This binding cannot be changed.
- * 2. Per-VCPU VIRQ channels always notify the vcpu specified at bind time.
- * This binding cannot be changed.
- * 3. All other channels notify vcpu0 by default. This default is set when
+ * 1. IPI- and VIRQ-bound channels always notify the vcpu that initialised
+ * the binding. This binding cannot be changed.
+ * 2. All other channels notify vcpu0 by default. This default is set when
* the channel is allocated (a port that is freed and subsequently reused
* has its binding reset to vcpu0).
*/
-#define EVTCHNOP_bind_vcpu 8
+#define EVTCHNOP_bind_vcpu 8
struct evtchn_bind_vcpu {
- /* IN parameters. */
- evtchn_port_t port;
- uint32_t vcpu;
+ /* IN parameters. */
+ evtchn_port_t port;
+ uint32_t vcpu;
};
-typedef struct evtchn_bind_vcpu evtchn_bind_vcpu_t;
/*
* EVTCHNOP_unmask: Unmask the specified local event-channel port and deliver
* a notification to the appropriate VCPU if an event is pending.
*/
-#define EVTCHNOP_unmask 9
+#define EVTCHNOP_unmask 9
struct evtchn_unmask {
- /* IN parameters. */
- evtchn_port_t port;
-};
-typedef struct evtchn_unmask evtchn_unmask_t;
-
-/*
- * EVTCHNOP_reset: Close all event channels associated with specified domain.
- * NOTES:
- * 1. <dom> may be specified as DOMID_SELF.
- * 2. Only a sufficiently-privileged domain may specify other than DOMID_SELF.
- */
-#define EVTCHNOP_reset 10
-struct evtchn_reset {
- /* IN parameters. */
- domid_t dom;
+ /* IN parameters. */
+ evtchn_port_t port;
};
-typedef struct evtchn_reset evtchn_reset_t;
-/*
- * Argument to event_channel_op_compat() hypercall. Superceded by new
- * event_channel_op() hypercall since 0x00030202.
- */
struct evtchn_op {
- uint32_t cmd; /* EVTCHNOP_* */
- union {
- struct evtchn_alloc_unbound alloc_unbound;
- struct evtchn_bind_interdomain bind_interdomain;
- struct evtchn_bind_virq bind_virq;
- struct evtchn_bind_pirq bind_pirq;
- struct evtchn_bind_ipi bind_ipi;
- struct evtchn_close close;
- struct evtchn_send send;
- struct evtchn_status status;
- struct evtchn_bind_vcpu bind_vcpu;
- struct evtchn_unmask unmask;
- } u;
+ uint32_t cmd; /* EVTCHNOP_* */
+ union {
+ struct evtchn_alloc_unbound alloc_unbound;
+ struct evtchn_bind_interdomain bind_interdomain;
+ struct evtchn_bind_virq bind_virq;
+ struct evtchn_bind_pirq bind_pirq;
+ struct evtchn_bind_ipi bind_ipi;
+ struct evtchn_close close;
+ struct evtchn_send send;
+ struct evtchn_status status;
+ struct evtchn_bind_vcpu bind_vcpu;
+ struct evtchn_unmask unmask;
+ } u;
};
-DEFINE_XEN_GUEST_HANDLE_STRUCT(evtchn_op);
-typedef struct evtchn_op evtchn_op_t;
-DEFINE_XEN_GUEST_HANDLE(evtchn_op_t);
+DEFINE_GUEST_HANDLE_STRUCT(evtchn_op);
#endif /* __XEN_PUBLIC_EVENT_CHANNEL_H__ */
-
-/*
- * Local variables:
- * mode: C
- * c-set-style: "BSD"
- * c-basic-offset: 4
- * tab-width: 4
- * indent-tabs-mode: nil
- * End:
- */
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