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| author | kfraser@localhost.localdomain <kfraser@localhost.localdomain> | 2006-08-04 20:34:44 +0100 |
|---|---|---|
| committer | kfraser@localhost.localdomain <kfraser@localhost.localdomain> | 2006-08-04 20:34:44 +0100 |
| commit | 76338bfaaa51f16b2c4ee5602985e510a92c51ed (patch) | |
| tree | 0cdd4df21619cee123069c53115fac223599c9b7 /xen/include/xen/event.h | |
| parent | 5eeca68ffd007f81ac202eafdc96d44e5bb69bfb (diff) | |
| download | xen-76338bfaaa51f16b2c4ee5602985e510a92c51ed.tar.gz xen-76338bfaaa51f16b2c4ee5602985e510a92c51ed.tar.bz2 xen-76338bfaaa51f16b2c4ee5602985e510a92c51ed.zip | |
[XEN] Add Xen-attached event channels, which will be used
by HVM for the ioreq_packet port.
Signed-off-by: Keir Fraser <keir@xensource.com>
Diffstat (limited to 'xen/include/xen/event.h')
| -rw-r--r-- | xen/include/xen/event.h | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/xen/include/xen/event.h b/xen/include/xen/event.h index 7b0d428b67..304466a945 100644 --- a/xen/include/xen/event.h +++ b/xen/include/xen/event.h @@ -15,33 +15,58 @@ #include <asm/bitops.h> #include <asm/event.h> -extern void evtchn_set_pending(struct vcpu *v, int port); +void evtchn_set_pending(struct vcpu *v, int port); /* * send_guest_vcpu_virq: Notify guest via a per-VCPU VIRQ. * @v: VCPU to which virtual IRQ should be sent * @virq: Virtual IRQ number (VIRQ_*) */ -extern void send_guest_vcpu_virq(struct vcpu *v, int virq); +void send_guest_vcpu_virq(struct vcpu *v, int virq); /* * send_guest_global_virq: Notify guest via a global VIRQ. * @d: Domain to which virtual IRQ should be sent * @virq: Virtual IRQ number (VIRQ_*) */ -extern void send_guest_global_virq(struct domain *d, int virq); +void send_guest_global_virq(struct domain *d, int virq); /* * send_guest_pirq: * @d: Domain to which physical IRQ should be sent * @pirq: Physical IRQ number */ -extern void send_guest_pirq(struct domain *d, int pirq); +void send_guest_pirq(struct domain *d, int pirq); /* Send a notification from a local event-channel port. */ -extern long evtchn_send(unsigned int lport); +long evtchn_send(unsigned int lport); /* Bind a local event-channel port to the specified VCPU. */ -extern long evtchn_bind_vcpu(unsigned int port, unsigned int vcpu_id); +long evtchn_bind_vcpu(unsigned int port, unsigned int vcpu_id); + +/* Allocate/free a Xen-attached event channel port. */ +int alloc_unbound_xen_event_channel( + struct vcpu *local_vcpu, domid_t remote_domid); +void free_xen_event_channel( + struct vcpu *local_vcpu, int port); + +/* Notify remote end of a Xen-attached event channel.*/ +void notify_via_xen_event_channel(int lport); + +/* Wait on a Xen-attached event channel. */ +#define wait_on_xen_event_channel(port, condition) \ + do { \ + if ( condition ) \ + break; \ + set_bit(_VCPUF_blocked_in_xen, ¤t->vcpu_flags); \ + mb(); /* set blocked status /then/ re-evaluate condition */ \ + if ( condition ) \ + { \ + clear_bit(_VCPUF_blocked_in_xen, ¤t->vcpu_flags); \ + break; \ + } \ + raise_softirq(SCHEDULE_SOFTIRQ); \ + do_softirq(); \ + } while ( 0 ) #endif /* __XEN_EVENT_H__ */ |