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authorIsaku Yamahata <yamahata@valinux.co.jp>2008-04-02 10:53:56 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-24 23:57:32 +0200
commite849c3e9e0b786619c451d89ef0c47ac9a28fbc1 (patch)
treebc3500d40095c2f868e2efca4918b73a6b0a1090 /include
parente04d0d0767a9c272d3c7300fb7a5221c5e3a71eb (diff)
Xen: make events.c portable for ia64/xen support
Remove x86 dependency in drivers/xen/events.c for ia64/xen support introducing include/asm/xen/events.h. Introduce xen_irqs_disabled() to hide regs->flags Introduce xen_do_IRQ() to hide regs->orig_ax. make enum ipi_vector definition arch specific. ia64/xen needs four vectors. Add one rmb() because on ia64 xchg() isn't barrier. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/xen/events.h22
-rw-r--r--include/xen/events.h8
2 files changed, 23 insertions, 7 deletions
diff --git a/include/asm-x86/xen/events.h b/include/asm-x86/xen/events.h
new file mode 100644
index 00000000000..596312a7bfc
--- /dev/null
+++ b/include/asm-x86/xen/events.h
@@ -0,0 +1,22 @@
+#ifndef __XEN_EVENTS_H
+#define __XEN_EVENTS_H
+
+enum ipi_vector {
+ XEN_RESCHEDULE_VECTOR,
+ XEN_CALL_FUNCTION_VECTOR,
+
+ XEN_NR_IPIS,
+};
+
+static inline int xen_irqs_disabled(struct pt_regs *regs)
+{
+ return raw_irqs_disabled_flags(regs->flags);
+}
+
+static inline void xen_do_IRQ(int irq, struct pt_regs *regs)
+{
+ regs->orig_ax = ~irq;
+ do_IRQ(regs);
+}
+
+#endif /* __XEN_EVENTS_H */
diff --git a/include/xen/events.h b/include/xen/events.h
index 2bde54d29be..d99a3e0df88 100644
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -5,13 +5,7 @@
#include <xen/interface/event_channel.h>
#include <asm/xen/hypercall.h>
-
-enum ipi_vector {
- XEN_RESCHEDULE_VECTOR,
- XEN_CALL_FUNCTION_VECTOR,
-
- XEN_NR_IPIS,
-};
+#include <asm/xen/events.h>
int bind_evtchn_to_irq(unsigned int evtchn);
int bind_evtchn_to_irqhandler(unsigned int evtchn,