*
* 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.
+ *
* Copyright (c) 2003-2004, K A Fraser.
*/
#include <xen/interface/xen.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_GUEST_HANDLE(evtchn_port_t);
+DEFINE_XEN_GUEST_HANDLE(evtchn_port_t);
/*
* EVTCHNOP_alloc_unbound: Allocate a port in domain <dom> and mark as
/* OUT parameters */
evtchn_port_t port;
};
+typedef struct evtchn_alloc_unbound evtchn_alloc_unbound_t;
/*
* EVTCHNOP_bind_interdomain: Construct an interdomain event channel between
/* 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. 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.
+ * 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.
*/
#define EVTCHNOP_bind_virq 1
struct evtchn_bind_virq {
/* 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>.
/* 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.
/* 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
/* 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
/* IN parameters. */
evtchn_port_t port;
};
+typedef struct evtchn_send evtchn_send_t;
/*
* EVTCHNOP_status: Get the current status of the communication channel which
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- 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
+ * 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
* the channel is allocated (a port that is freed and subsequently reused
* has its binding reset to vcpu0).
*/
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
/* 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;
+};
+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 {
} u;
};
DEFINE_GUEST_HANDLE_STRUCT(evtchn_op);
+typedef struct evtchn_op evtchn_op_t;
+DEFINE_XEN_GUEST_HANDLE(evtchn_op_t);
#endif /* __XEN_PUBLIC_EVENT_CHANNEL_H__ */
projects / linux-flexiantxendom0-3.2.10.git / blobdiff