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kaf24@firebug.cl.cam.ac.uk
ca068fad60
is pretty big, but this is mostly because I've replaced hypervisor.h with the hypercalls.h header file from Linux (which seems easier to maintain anyway). I've ignored X86_64. Signed-off-by: Simon Kagstrom <simon.kagstrom@bth.se>
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*-
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****************************************************************************
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* (C) 2003 - Rolf Neugebauer - Intel Research Cambridge
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* (C) 2005 - Grzegorz Milos - Intel Reseach Cambridge
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****************************************************************************
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*
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* File: events.h
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* Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk)
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* Changes: Grzegorz Milos (gm281@cam.ac.uk)
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*
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* Date: Jul 2003, changes Jun 2005
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*
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* Environment: Xen Minimal OS
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* Description: Deals with events on the event channels
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*
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****************************************************************************
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*/
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#ifndef _EVENTS_H_
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#define _EVENTS_H_
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#include<traps.h>
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#include <xen/event_channel.h>
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#define NR_EVS 1024
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/* ev handler status */
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#define EVS_INPROGRESS 1 /* Event handler active - do not enter! */
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#define EVS_DISABLED 2 /* Event disabled - do not enter! */
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#define EVS_PENDING 4 /* Event pending - replay on enable */
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#define EVS_REPLAY 8 /* Event has been replayed but not acked yet */
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/* this represents a event handler. Chaining or sharing is not allowed */
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typedef struct _ev_action_t {
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void (*handler)(int, struct pt_regs *);
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unsigned int status; /* IRQ status */
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u32 count;
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} ev_action_t;
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/* prototypes */
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int do_event(u32 port, struct pt_regs *regs);
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int bind_virq( u32 virq, void (*handler)(int, struct pt_regs *) );
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void bind_evtchn( u32 virq, void (*handler)(int, struct pt_regs *) );
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void init_events(void);
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static inline int notify_via_evtchn(int port)
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{
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evtchn_op_t op;
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op.cmd = EVTCHNOP_send;
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op.u.send.port = port;
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return HYPERVISOR_event_channel_op(&op);
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}
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#endif /* _EVENTS_H_ */
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