xen/arm: receive Xen events on ARM
Compile events.c on ARM.
Parse, map and enable the IRQ to get event notifications from the device
tree (node "/xen").
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index c60d162..8672211 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -31,14 +31,16 @@
#include <linux/irqnr.h>
#include <linux/pci.h>
+#ifdef CONFIG_X86
#include <asm/desc.h>
#include <asm/ptrace.h>
#include <asm/irq.h>
#include <asm/idle.h>
#include <asm/io_apic.h>
-#include <asm/sync_bitops.h>
#include <asm/xen/page.h>
#include <asm/xen/pci.h>
+#endif
+#include <asm/sync_bitops.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/hypervisor.h>
@@ -50,6 +52,9 @@
#include <xen/interface/event_channel.h>
#include <xen/interface/hvm/hvm_op.h>
#include <xen/interface/hvm/params.h>
+#include <xen/interface/physdev.h>
+#include <xen/interface/sched.h>
+#include <asm/hw_irq.h>
/*
* This lock protects updates to the following mapping and reference-count
@@ -1386,7 +1391,9 @@
{
struct pt_regs *old_regs = set_irq_regs(regs);
+#ifdef CONFIG_X86
exit_idle();
+#endif
irq_enter();
__xen_evtchn_do_upcall();
@@ -1795,9 +1802,9 @@
void xen_callback_vector(void) {}
#endif
-void __init xen_init_IRQ(void)
+void xen_init_IRQ(void)
{
- int i, rc;
+ int i;
evtchn_to_irq = kcalloc(NR_EVENT_CHANNELS, sizeof(*evtchn_to_irq),
GFP_KERNEL);
@@ -1813,6 +1820,7 @@
pirq_needs_eoi = pirq_needs_eoi_flag;
+#ifdef CONFIG_X86
if (xen_hvm_domain()) {
xen_callback_vector();
native_init_IRQ();
@@ -1820,6 +1828,7 @@
* __acpi_register_gsi can point at the right function */
pci_xen_hvm_init();
} else {
+ int rc;
struct physdev_pirq_eoi_gmfn eoi_gmfn;
irq_ctx_init(smp_processor_id());
@@ -1835,4 +1844,6 @@
} else
pirq_needs_eoi = pirq_check_eoi_map;
}
+#endif
}
+EXPORT_SYMBOL_GPL(xen_init_IRQ);
