Lines Matching full:irq
9 * chip. When an event is received, it is mapped to an irq and sent
29 #include <linux/irq.h>
46 #include <asm/irq.h>
86 * Packed IRQ information:
88 * event channel - irq->event channel mapping
91 * PIRQ - vector, with MSB being "needs EIO", or physical IRQ of the HVM
92 * guest, or GSI (real passthrough IRQ) of the device.
110 unsigned irq; member
155 * IRQ-desc lock
162 /* IRQ <-> VIRQ mapping. */
165 /* IRQ <-> IPI mapping */
175 static bool (*pirq_needs_eoi)(unsigned irq);
214 static int set_evtchn_to_irq(evtchn_port_t evtchn, unsigned int irq) in set_evtchn_to_irq() argument
227 /* Unallocated irq entries return -1 anyway */ in set_evtchn_to_irq()
228 if (irq == -1) in set_evtchn_to_irq()
245 WRITE_ONCE(evtchn_to_irq[row][col], irq); in set_evtchn_to_irq()
258 /* Get info for IRQ */
259 static struct irq_info *info_for_irq(unsigned irq) in info_for_irq() argument
261 if (irq < nr_legacy_irqs()) in info_for_irq()
262 return legacy_info_ptrs[irq]; in info_for_irq()
264 return irq_get_chip_data(irq); in info_for_irq()
267 static void set_info_for_irq(unsigned int irq, struct irq_info *info) in set_info_for_irq() argument
269 if (irq < nr_legacy_irqs()) in set_info_for_irq()
270 legacy_info_ptrs[irq] = info; in set_info_for_irq()
272 irq_set_chip_data(irq, info); in set_info_for_irq()
305 unsigned int irq = info->irq; in delayed_free_irq() local
308 set_info_for_irq(irq, NULL); in delayed_free_irq()
312 /* Legacy IRQ descriptors are managed by the arch. */ in delayed_free_irq()
313 if (irq >= nr_legacy_irqs()) in delayed_free_irq()
314 irq_free_desc(irq); in delayed_free_irq()
317 /* Constructors for packed IRQ information. */
319 unsigned irq, in xen_irq_info_common_setup() argument
329 info->irq = irq; in xen_irq_info_common_setup()
335 ret = set_evtchn_to_irq(evtchn, irq); in xen_irq_info_common_setup()
339 irq_clear_status_flags(irq, IRQ_NOREQUEST|IRQ_NOAUTOEN); in xen_irq_info_common_setup()
344 static int xen_irq_info_evtchn_setup(unsigned irq, in xen_irq_info_evtchn_setup() argument
348 struct irq_info *info = info_for_irq(irq); in xen_irq_info_evtchn_setup()
351 ret = xen_irq_info_common_setup(info, irq, IRQT_EVTCHN, evtchn, 0); in xen_irq_info_evtchn_setup()
360 unsigned irq, in xen_irq_info_ipi_setup() argument
364 struct irq_info *info = info_for_irq(irq); in xen_irq_info_ipi_setup()
368 per_cpu(ipi_to_irq, cpu)[ipi] = irq; in xen_irq_info_ipi_setup()
370 return xen_irq_info_common_setup(info, irq, IRQT_IPI, evtchn, 0); in xen_irq_info_ipi_setup()
374 unsigned irq, in xen_irq_info_virq_setup() argument
378 struct irq_info *info = info_for_irq(irq); in xen_irq_info_virq_setup()
382 per_cpu(virq_to_irq, cpu)[virq] = irq; in xen_irq_info_virq_setup()
384 return xen_irq_info_common_setup(info, irq, IRQT_VIRQ, evtchn, 0); in xen_irq_info_virq_setup()
387 static int xen_irq_info_pirq_setup(unsigned irq, in xen_irq_info_pirq_setup() argument
394 struct irq_info *info = info_for_irq(irq); in xen_irq_info_pirq_setup()
401 return xen_irq_info_common_setup(info, irq, IRQT_PIRQ, evtchn, 0); in xen_irq_info_pirq_setup()
413 * Accessors for packed IRQ information.
415 evtchn_port_t evtchn_from_irq(unsigned irq) in evtchn_from_irq() argument
419 if (likely(irq < nr_irqs)) in evtchn_from_irq()
420 info = info_for_irq(irq); in evtchn_from_irq()
438 static enum ipi_vector ipi_from_irq(unsigned irq) in ipi_from_irq() argument
440 struct irq_info *info = info_for_irq(irq); in ipi_from_irq()
448 static unsigned virq_from_irq(unsigned irq) in virq_from_irq() argument
450 struct irq_info *info = info_for_irq(irq); in virq_from_irq()
458 static unsigned pirq_from_irq(unsigned irq) in pirq_from_irq() argument
460 struct irq_info *info = info_for_irq(irq); in pirq_from_irq()
468 static enum xen_irq_type type_from_irq(unsigned irq) in type_from_irq() argument
470 return info_for_irq(irq)->type; in type_from_irq()
473 static unsigned cpu_from_irq(unsigned irq) in cpu_from_irq() argument
475 return info_for_irq(irq)->cpu; in cpu_from_irq()
480 int irq = get_evtchn_to_irq(evtchn); in cpu_from_evtchn() local
483 if (irq != -1) in cpu_from_evtchn()
484 ret = cpu_from_irq(irq); in cpu_from_evtchn()
518 static bool pirq_check_eoi_map(unsigned irq) in pirq_check_eoi_map() argument
520 return test_bit(pirq_from_irq(irq), pirq_eoi_map); in pirq_check_eoi_map()
524 static bool pirq_needs_eoi_flag(unsigned irq) in pirq_needs_eoi_flag() argument
526 struct irq_info *info = info_for_irq(irq); in pirq_needs_eoi_flag()
535 int irq = get_evtchn_to_irq(evtchn); in bind_evtchn_to_cpu() local
536 struct irq_info *info = info_for_irq(irq); in bind_evtchn_to_cpu()
538 BUG_ON(irq == -1); in bind_evtchn_to_cpu()
541 struct irq_data *data = irq_get_irq_data(irq); in bind_evtchn_to_cpu()
555 * notify_remote_via_irq - send event to remote end of event channel via irq
556 * @irq: irq of event channel to send event to
562 void notify_remote_via_irq(int irq) in notify_remote_via_irq() argument
564 evtchn_port_t evtchn = evtchn_from_irq(irq); in notify_remote_via_irq()
720 void xen_irq_lateeoi(unsigned int irq, unsigned int eoi_flags) in xen_irq_lateeoi() argument
726 info = info_for_irq(irq); in xen_irq_lateeoi()
735 static void xen_irq_init(unsigned irq) in xen_irq_init() argument
741 panic("Unable to allocate metadata for IRQ%d\n", irq); in xen_irq_init()
747 set_info_for_irq(irq, info); in xen_irq_init()
752 irq_set_status_flags(irq, IRQ_MOVE_PCNTXT); in xen_irq_init()
760 int i, irq = irq_alloc_descs(-1, 0, nvec, -1); in xen_allocate_irqs_dynamic() local
762 if (irq >= 0) { in xen_allocate_irqs_dynamic()
764 xen_irq_init(irq + i); in xen_allocate_irqs_dynamic()
767 return irq; in xen_allocate_irqs_dynamic()
778 int irq; in xen_allocate_irq_gsi() local
783 * all IRQs are dynamically allocated from the entire IRQ in xen_allocate_irq_gsi()
789 /* Legacy IRQ descriptors are already allocated by the arch. */ in xen_allocate_irq_gsi()
791 irq = gsi; in xen_allocate_irq_gsi()
793 irq = irq_alloc_desc_at(gsi, -1); in xen_allocate_irq_gsi()
795 xen_irq_init(irq); in xen_allocate_irq_gsi()
797 return irq; in xen_allocate_irq_gsi()
800 static void xen_free_irq(unsigned irq) in xen_free_irq() argument
802 struct irq_info *info = info_for_irq(irq); in xen_free_irq()
824 static void pirq_query_unmask(int irq) in pirq_query_unmask() argument
827 struct irq_info *info = info_for_irq(irq); in pirq_query_unmask()
831 irq_status.irq = pirq_from_irq(irq); in pirq_query_unmask()
842 struct irq_info *info = info_for_irq(data->irq); in eoi_pirq()
844 struct physdev_eoi eoi = { .irq = pirq_from_irq(data->irq) }; in eoi_pirq()
852 if (pirq_needs_eoi(data->irq)) { in eoi_pirq()
864 static unsigned int __startup_pirq(unsigned int irq) in __startup_pirq() argument
867 struct irq_info *info = info_for_irq(irq); in __startup_pirq()
868 evtchn_port_t evtchn = evtchn_from_irq(irq); in __startup_pirq()
876 bind_pirq.pirq = pirq_from_irq(irq); in __startup_pirq()
882 pr_warn("Failed to obtain physical IRQ %d\n", irq); in __startup_pirq()
887 pirq_query_unmask(irq); in __startup_pirq()
889 rc = set_evtchn_to_irq(evtchn, irq); in __startup_pirq()
903 eoi_pirq(irq_get_irq_data(irq)); in __startup_pirq()
908 pr_err("irq%d: Failed to set port to irq mapping (%d)\n", irq, rc); in __startup_pirq()
915 return __startup_pirq(data->irq); in startup_pirq()
920 unsigned int irq = data->irq; in shutdown_pirq() local
921 struct irq_info *info = info_for_irq(irq); in shutdown_pirq()
922 evtchn_port_t evtchn = evtchn_from_irq(irq); in shutdown_pirq()
953 return info->irq; in xen_irq_from_gsi()
960 static void __unbind_from_irq(unsigned int irq) in __unbind_from_irq() argument
962 evtchn_port_t evtchn = evtchn_from_irq(irq); in __unbind_from_irq()
963 struct irq_info *info = info_for_irq(irq); in __unbind_from_irq()
972 unsigned int cpu = cpu_from_irq(irq); in __unbind_from_irq()
978 switch (type_from_irq(irq)) { in __unbind_from_irq()
980 per_cpu(virq_to_irq, cpu)[virq_from_irq(irq)] = -1; in __unbind_from_irq()
983 per_cpu(ipi_to_irq, cpu)[ipi_from_irq(irq)] = -1; in __unbind_from_irq()
997 xen_free_irq(irq); in __unbind_from_irq()
1002 * IRQ number returned here and the Xen pirq argument.
1004 * Note: We don't assign an event channel until the irq actually started
1005 * up. Return an existing irq if we've already got one for the gsi.
1013 int irq; in xen_bind_pirq_gsi_to_irq() local
1019 irq = xen_irq_from_gsi(gsi); in xen_bind_pirq_gsi_to_irq()
1020 if (irq != -1) { in xen_bind_pirq_gsi_to_irq()
1021 pr_info("%s: returning irq %d for gsi %u\n", in xen_bind_pirq_gsi_to_irq()
1022 __func__, irq, gsi); in xen_bind_pirq_gsi_to_irq()
1026 irq = xen_allocate_irq_gsi(gsi); in xen_bind_pirq_gsi_to_irq()
1027 if (irq < 0) in xen_bind_pirq_gsi_to_irq()
1030 irq_op.irq = irq; in xen_bind_pirq_gsi_to_irq()
1038 xen_free_irq(irq); in xen_bind_pirq_gsi_to_irq()
1039 irq = -ENOSPC; in xen_bind_pirq_gsi_to_irq()
1043 ret = xen_irq_info_pirq_setup(irq, 0, pirq, gsi, DOMID_SELF, in xen_bind_pirq_gsi_to_irq()
1046 __unbind_from_irq(irq); in xen_bind_pirq_gsi_to_irq()
1047 irq = ret; in xen_bind_pirq_gsi_to_irq()
1051 pirq_query_unmask(irq); in xen_bind_pirq_gsi_to_irq()
1068 irq_set_chip_and_handler_name(irq, &xen_pirq_chip, in xen_bind_pirq_gsi_to_irq()
1071 irq_set_chip_and_handler_name(irq, &xen_pirq_chip, in xen_bind_pirq_gsi_to_irq()
1077 return irq; in xen_bind_pirq_gsi_to_irq()
1098 int i, irq, ret; in xen_bind_pirq_msi_to_irq() local
1102 irq = xen_allocate_irqs_dynamic(nvec); in xen_bind_pirq_msi_to_irq()
1103 if (irq < 0) in xen_bind_pirq_msi_to_irq()
1107 irq_set_chip_and_handler_name(irq + i, &xen_pirq_chip, handle_edge_irq, name); in xen_bind_pirq_msi_to_irq()
1109 ret = xen_irq_info_pirq_setup(irq + i, 0, pirq + i, 0, domid, in xen_bind_pirq_msi_to_irq()
1115 ret = irq_set_msi_desc(irq, msidesc); in xen_bind_pirq_msi_to_irq()
1120 return irq; in xen_bind_pirq_msi_to_irq()
1123 __unbind_from_irq(irq + nvec); in xen_bind_pirq_msi_to_irq()
1129 int xen_destroy_irq(int irq) in xen_destroy_irq() argument
1132 struct irq_info *info = info_for_irq(irq); in xen_destroy_irq()
1154 pr_warn("unmap irq failed %d\n", rc); in xen_destroy_irq()
1159 xen_free_irq(irq); in xen_destroy_irq()
1168 int irq; in xen_irq_from_pirq() local
1177 irq = info->irq; in xen_irq_from_pirq()
1181 irq = -1; in xen_irq_from_pirq()
1185 return irq; in xen_irq_from_pirq()
1189 int xen_pirq_from_irq(unsigned irq) in xen_pirq_from_irq() argument
1191 return pirq_from_irq(irq); in xen_pirq_from_irq()
1198 int irq; in bind_evtchn_to_irq_chip() local
1206 irq = get_evtchn_to_irq(evtchn); in bind_evtchn_to_irq_chip()
1208 if (irq == -1) { in bind_evtchn_to_irq_chip()
1209 irq = xen_allocate_irq_dynamic(); in bind_evtchn_to_irq_chip()
1210 if (irq < 0) in bind_evtchn_to_irq_chip()
1213 irq_set_chip_and_handler_name(irq, chip, in bind_evtchn_to_irq_chip()
1216 ret = xen_irq_info_evtchn_setup(irq, evtchn, dev); in bind_evtchn_to_irq_chip()
1218 __unbind_from_irq(irq); in bind_evtchn_to_irq_chip()
1219 irq = ret; in bind_evtchn_to_irq_chip()
1231 struct irq_info *info = info_for_irq(irq); in bind_evtchn_to_irq_chip()
1238 return irq; in bind_evtchn_to_irq_chip()
1257 int ret, irq; in bind_ipi_to_irq() local
1261 irq = per_cpu(ipi_to_irq, cpu)[ipi]; in bind_ipi_to_irq()
1263 if (irq == -1) { in bind_ipi_to_irq()
1264 irq = xen_allocate_irq_dynamic(); in bind_ipi_to_irq()
1265 if (irq < 0) in bind_ipi_to_irq()
1268 irq_set_chip_and_handler_name(irq, &xen_percpu_chip, in bind_ipi_to_irq()
1277 ret = xen_irq_info_ipi_setup(cpu, irq, evtchn, ipi); in bind_ipi_to_irq()
1279 __unbind_from_irq(irq); in bind_ipi_to_irq()
1280 irq = ret; in bind_ipi_to_irq()
1289 struct irq_info *info = info_for_irq(irq); in bind_ipi_to_irq()
1295 return irq; in bind_ipi_to_irq()
1363 int irq, ret; in bind_virq_to_irq() local
1367 irq = per_cpu(virq_to_irq, cpu)[virq]; in bind_virq_to_irq()
1369 if (irq == -1) { in bind_virq_to_irq()
1370 irq = xen_allocate_irq_dynamic(); in bind_virq_to_irq()
1371 if (irq < 0) in bind_virq_to_irq()
1375 irq_set_chip_and_handler_name(irq, &xen_percpu_chip, in bind_virq_to_irq()
1378 irq_set_chip_and_handler_name(irq, &xen_dynamic_chip, in bind_virq_to_irq()
1393 ret = xen_irq_info_virq_setup(cpu, irq, evtchn, virq); in bind_virq_to_irq()
1395 __unbind_from_irq(irq); in bind_virq_to_irq()
1396 irq = ret; in bind_virq_to_irq()
1406 struct irq_info *info = info_for_irq(irq); in bind_virq_to_irq()
1413 return irq; in bind_virq_to_irq()
1416 static void unbind_from_irq(unsigned int irq) in unbind_from_irq() argument
1419 __unbind_from_irq(irq); in unbind_from_irq()
1429 int irq, retval; in bind_evtchn_to_irqhandler_chip() local
1431 irq = bind_evtchn_to_irq_chip(evtchn, chip, NULL); in bind_evtchn_to_irqhandler_chip()
1432 if (irq < 0) in bind_evtchn_to_irqhandler_chip()
1433 return irq; in bind_evtchn_to_irqhandler_chip()
1434 retval = request_irq(irq, handler, irqflags, devname, dev_id); in bind_evtchn_to_irqhandler_chip()
1436 unbind_from_irq(irq); in bind_evtchn_to_irqhandler_chip()
1440 return irq; in bind_evtchn_to_irqhandler_chip()
1470 int irq, retval; in bind_interdomain_evtchn_to_irqhandler_chip() local
1472 irq = bind_interdomain_evtchn_to_irq_chip(dev, remote_port, chip); in bind_interdomain_evtchn_to_irqhandler_chip()
1473 if (irq < 0) in bind_interdomain_evtchn_to_irqhandler_chip()
1474 return irq; in bind_interdomain_evtchn_to_irqhandler_chip()
1476 retval = request_irq(irq, handler, irqflags, devname, dev_id); in bind_interdomain_evtchn_to_irqhandler_chip()
1478 unbind_from_irq(irq); in bind_interdomain_evtchn_to_irqhandler_chip()
1482 return irq; in bind_interdomain_evtchn_to_irqhandler_chip()
1502 int irq, retval; in bind_virq_to_irqhandler() local
1504 irq = bind_virq_to_irq(virq, cpu, irqflags & IRQF_PERCPU); in bind_virq_to_irqhandler()
1505 if (irq < 0) in bind_virq_to_irqhandler()
1506 return irq; in bind_virq_to_irqhandler()
1507 retval = request_irq(irq, handler, irqflags, devname, dev_id); in bind_virq_to_irqhandler()
1509 unbind_from_irq(irq); in bind_virq_to_irqhandler()
1513 return irq; in bind_virq_to_irqhandler()
1524 int irq, retval; in bind_ipi_to_irqhandler() local
1526 irq = bind_ipi_to_irq(ipi, cpu); in bind_ipi_to_irqhandler()
1527 if (irq < 0) in bind_ipi_to_irqhandler()
1528 return irq; in bind_ipi_to_irqhandler()
1531 retval = request_irq(irq, handler, irqflags, devname, dev_id); in bind_ipi_to_irqhandler()
1533 unbind_from_irq(irq); in bind_ipi_to_irqhandler()
1537 return irq; in bind_ipi_to_irqhandler()
1540 void unbind_from_irqhandler(unsigned int irq, void *dev_id) in unbind_from_irqhandler() argument
1542 struct irq_info *info = info_for_irq(irq); in unbind_from_irqhandler()
1546 free_irq(irq, dev_id); in unbind_from_irqhandler()
1547 unbind_from_irq(irq); in unbind_from_irqhandler()
1553 * @irq:irq bound to an event channel.
1556 int xen_set_irq_priority(unsigned irq, unsigned priority) in xen_set_irq_priority() argument
1560 set_priority.port = evtchn_from_irq(irq); in xen_set_irq_priority()
1570 int irq = get_evtchn_to_irq(evtchn); in evtchn_make_refcounted() local
1573 if (irq == -1) in evtchn_make_refcounted()
1576 info = info_for_irq(irq); in evtchn_make_refcounted()
1592 int irq; in evtchn_get() local
1601 irq = get_evtchn_to_irq(evtchn); in evtchn_get()
1602 if (irq == -1) in evtchn_get()
1605 info = info_for_irq(irq); in evtchn_get()
1625 int irq = get_evtchn_to_irq(evtchn); in evtchn_put() local
1626 if (WARN_ON(irq == -1)) in evtchn_put()
1628 unbind_from_irq(irq); in evtchn_put()
1634 int irq; in xen_send_IPI_one() local
1645 irq = per_cpu(ipi_to_irq, cpu)[vector]; in xen_send_IPI_one()
1646 BUG_ON(irq < 0); in xen_send_IPI_one()
1647 notify_remote_via_irq(irq); in xen_send_IPI_one()
1658 int irq; in handle_irq_for_port() local
1662 irq = get_evtchn_to_irq(port); in handle_irq_for_port()
1663 if (irq == -1) in handle_irq_for_port()
1688 info = info_for_irq(irq); in handle_irq_for_port()
1702 generic_handle_irq(irq); in handle_irq_for_port()
1713 * When closing an event channel the associated IRQ must not be freed in xen_evtchn_do_upcall()
1716 * the IRQ is handled via queue_rcu_work() _after_ closing the event in xen_evtchn_do_upcall()
1745 /* Rebind a new event channel to an existing irq. */
1746 void rebind_evtchn_irq(evtchn_port_t evtchn, int irq) in rebind_evtchn_irq() argument
1748 struct irq_info *info = info_for_irq(irq); in rebind_evtchn_irq()
1753 /* Make sure the irq is masked, since the new event channel in rebind_evtchn_irq()
1755 disable_irq(irq); in rebind_evtchn_irq()
1759 /* After resume the irq<->evtchn mappings are all cleared out */ in rebind_evtchn_irq()
1761 /* Expect irq to have been bound before, in rebind_evtchn_irq()
1765 (void)xen_irq_info_evtchn_setup(irq, evtchn, NULL); in rebind_evtchn_irq()
1772 enable_irq(irq); in rebind_evtchn_irq()
1844 ret = xen_rebind_evtchn_to_cpu(info_for_irq(data->irq), tcpu); in set_affinity_irq()
1853 struct irq_info *info = info_for_irq(data->irq); in enable_dynirq()
1862 struct irq_info *info = info_for_irq(data->irq); in disable_dynirq()
1871 struct irq_info *info = info_for_irq(data->irq); in ack_dynirq()
1886 struct irq_info *info = info_for_irq(data->irq); in lateeoi_ack_dynirq()
1902 struct irq_info *info = info_for_irq(data->irq); in lateeoi_mask_ack_dynirq()
1913 struct irq_info *info = info_for_irq(data->irq); in retrigger_dynirq()
1928 int pirq, rc, irq, gsi; in restore_pirqs() local
1938 irq = info->irq; in restore_pirqs()
1952 pr_warn("xen map irq failed gsi=%d irq=%d pirq=%d rc=%d\n", in restore_pirqs()
1953 gsi, irq, pirq, rc); in restore_pirqs()
1954 xen_free_irq(irq); in restore_pirqs()
1958 printk(KERN_DEBUG "xen: --> irq=%d, pirq=%d\n", irq, map_irq.pirq); in restore_pirqs()
1960 __startup_pirq(irq); in restore_pirqs()
1968 int virq, irq; in restore_cpu_virqs() local
1971 if ((irq = per_cpu(virq_to_irq, cpu)[virq]) == -1) in restore_cpu_virqs()
1974 BUG_ON(virq_from_irq(irq) != virq); in restore_cpu_virqs()
1985 (void)xen_irq_info_virq_setup(cpu, irq, evtchn, virq); in restore_cpu_virqs()
1995 int ipi, irq; in restore_cpu_ipis() local
1998 if ((irq = per_cpu(ipi_to_irq, cpu)[ipi]) == -1) in restore_cpu_ipis()
2001 BUG_ON(ipi_from_irq(irq) != ipi); in restore_cpu_ipis()
2011 (void)xen_irq_info_ipi_setup(cpu, irq, evtchn, ipi); in restore_cpu_ipis()
2017 /* Clear an irq's pending state, in preparation for polling on it */
2018 void xen_clear_irq_pending(int irq) in xen_clear_irq_pending() argument
2020 struct irq_info *info = info_for_irq(irq); in xen_clear_irq_pending()
2027 void xen_set_irq_pending(int irq) in xen_set_irq_pending() argument
2029 evtchn_port_t evtchn = evtchn_from_irq(irq); in xen_set_irq_pending()
2035 bool xen_test_irq_pending(int irq) in xen_test_irq_pending() argument
2037 evtchn_port_t evtchn = evtchn_from_irq(irq); in xen_test_irq_pending()
2046 /* Poll waiting for an irq to become pending with timeout. In the usual case,
2047 * the irq will be disabled so it won't deliver an interrupt. */
2048 void xen_poll_irq_timeout(int irq, u64 timeout) in xen_poll_irq_timeout() argument
2050 evtchn_port_t evtchn = evtchn_from_irq(irq); in xen_poll_irq_timeout()
2064 /* Poll waiting for an irq to become pending. In the usual case, the
2065 * irq will be disabled so it won't deliver an interrupt. */
2066 void xen_poll_irq(int irq) in xen_poll_irq() argument
2068 xen_poll_irq_timeout(irq, 0 /* no timeout */); in xen_poll_irq()
2071 /* Check whether the IRQ line is shared with other guests. */
2072 int xen_test_irq_shared(int irq) in xen_test_irq_shared() argument
2074 struct irq_info *info = info_for_irq(irq); in xen_test_irq_shared()
2080 irq_status.irq = info->u.pirq.pirq; in xen_test_irq_shared()
2096 /* No IRQ <-> event-channel mappings. */ in xen_irq_resume()