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-rw-r--r--include/xen/interface/event_channel.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/include/xen/interface/event_channel.h b/include/xen/interface/event_channel.h
index f4942921e202..7e6acef5415b 100644
--- a/include/xen/interface/event_channel.h
+++ b/include/xen/interface/event_channel.h
@@ -190,6 +190,39 @@ struct evtchn_reset {
190}; 190};
191typedef struct evtchn_reset evtchn_reset_t; 191typedef struct evtchn_reset evtchn_reset_t;
192 192
193/*
194 * EVTCHNOP_init_control: initialize the control block for the FIFO ABI.
195 */
196#define EVTCHNOP_init_control 11
197struct evtchn_init_control {
198 /* IN parameters. */
199 uint64_t control_gfn;
200 uint32_t offset;
201 uint32_t vcpu;
202 /* OUT parameters. */
203 uint8_t link_bits;
204 uint8_t _pad[7];
205};
206
207/*
208 * EVTCHNOP_expand_array: add an additional page to the event array.
209 */
210#define EVTCHNOP_expand_array 12
211struct evtchn_expand_array {
212 /* IN parameters. */
213 uint64_t array_gfn;
214};
215
216/*
217 * EVTCHNOP_set_priority: set the priority for an event channel.
218 */
219#define EVTCHNOP_set_priority 13
220struct evtchn_set_priority {
221 /* IN parameters. */
222 uint32_t port;
223 uint32_t priority;
224};
225
193struct evtchn_op { 226struct evtchn_op {
194 uint32_t cmd; /* EVTCHNOP_* */ 227 uint32_t cmd; /* EVTCHNOP_* */
195 union { 228 union {
@@ -207,4 +240,39 @@ struct evtchn_op {
207}; 240};
208DEFINE_GUEST_HANDLE_STRUCT(evtchn_op); 241DEFINE_GUEST_HANDLE_STRUCT(evtchn_op);
209 242
243/*
244 * 2-level ABI
245 */
246
247#define EVTCHN_2L_NR_CHANNELS (sizeof(xen_ulong_t) * sizeof(xen_ulong_t) * 64)
248
249/*
250 * FIFO ABI
251 */
252
253/* Events may have priorities from 0 (highest) to 15 (lowest). */
254#define EVTCHN_FIFO_PRIORITY_MAX 0
255#define EVTCHN_FIFO_PRIORITY_DEFAULT 7
256#define EVTCHN_FIFO_PRIORITY_MIN 15
257
258#define EVTCHN_FIFO_MAX_QUEUES (EVTCHN_FIFO_PRIORITY_MIN + 1)
259
260typedef uint32_t event_word_t;
261
262#define EVTCHN_FIFO_PENDING 31
263#define EVTCHN_FIFO_MASKED 30
264#define EVTCHN_FIFO_LINKED 29
265#define EVTCHN_FIFO_BUSY 28
266
267#define EVTCHN_FIFO_LINK_BITS 17
268#define EVTCHN_FIFO_LINK_MASK ((1 << EVTCHN_FIFO_LINK_BITS) - 1)
269
270#define EVTCHN_FIFO_NR_CHANNELS (1 << EVTCHN_FIFO_LINK_BITS)
271
272struct evtchn_fifo_control_block {
273 uint32_t ready;
274 uint32_t _rsvd;
275 event_word_t head[EVTCHN_FIFO_MAX_QUEUES];
276};
277
210#endif /* __XEN_PUBLIC_EVENT_CHANNEL_H__ */ 278#endif /* __XEN_PUBLIC_EVENT_CHANNEL_H__ */