3 files changed, 36 insertions, 6 deletions
diff --git a/sys/arch/alpha/isa/isa_machdep.h b/sys/arch/alpha/isa/isa_machdep.h
index c72c63b93ba..c0ca49e8490 100644
--- a/sys/arch/alpha/isa/isa_machdep.h
+++ b/sys/arch/alpha/isa/isa_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: isa_machdep.h,v 1.13 2009/08/22 02:54:50 mk Exp $	*/
+/*	$OpenBSD: isa_machdep.h,v 1.14 2013/03/08 18:29:33 miod Exp $	*/
 /*	$NetBSD: isa_machdep.h,v 1.3 1996/11/19 04:53:07 cgd Exp $	*/
 
 /*
@@ -42,6 +42,7 @@ struct alpha_isa_chipset {
 		    int (*)(void *), void *, const char *);
 	void	(*ic_intr_disestablish)(void *, void *);
 	int	(*ic_intr_alloc)(isa_chipset_tag_t *, int, int, int *);
+	int	(*ic_intr_check)(isa_chipset_tag_t *, int, int);
 };
 
 /*
@@ -55,8 +56,8 @@ struct alpha_isa_chipset {
     (*(c)->ic_intr_disestablish)((c)->ic_v, (h))
 #define isa_intr_alloc(c, m, t, i)					\
     (*(c)->ic_intr_alloc)((c)->ic_v, (m), (t), (i))
-
-#define __NO_ISA_INTR_CHECK
+#define isa_intr_check(c, i, t)						\
+    (*(c)->ic_intr_check)((c)->ic_v, (i), (t))
 
 /*
  * alpha-specific ISA functions.
diff --git a/sys/arch/alpha/pci/sio.c b/sys/arch/alpha/pci/sio.c
index bffe3e3aa63..9d41887b6ac 100644
--- a/sys/arch/alpha/pci/sio.c
+++ b/sys/arch/alpha/pci/sio.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sio.c,v 1.36 2010/06/06 11:26:11 miod Exp $	*/
+/*	$OpenBSD: sio.c,v 1.37 2013/03/08 18:29:33 miod Exp $	*/
 /*	$NetBSD: sio.c,v 1.15 1996/12/05 01:39:36 cgd Exp $	*/
 
 /*
@@ -60,6 +60,7 @@ int	siomatch(struct device *, void *, void *);
 void	sioattach(struct device *, struct device *, void *);
 
 extern int sio_intr_alloc(isa_chipset_tag_t *, int, int, int *);
+extern int sio_intr_check(isa_chipset_tag_t *, int, int);
 
 
 struct cfattach sio_ca = {
@@ -187,6 +188,7 @@ sio_bridge_callback(self)
 	ic.ic_intr_establish = sio_intr_establish;
 	ic.ic_intr_disestablish = sio_intr_disestablish;
 	ic.ic_intr_alloc = sio_intr_alloc;
+	ic.ic_intr_check = sio_intr_check;
 
 	sa.sa_iba.iba_busname = "isa";
 	sa.sa_iba.iba_iot = sc->sc_iot;
diff --git a/sys/arch/alpha/pci/sio_pic.c b/sys/arch/alpha/pci/sio_pic.c
index 855020961eb..d8e9dca1362 100644
--- a/sys/arch/alpha/pci/sio_pic.c
+++ b/sys/arch/alpha/pci/sio_pic.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sio_pic.c,v 1.34 2013/03/02 22:54:29 miod Exp $	*/
+/*	$OpenBSD: sio_pic.c,v 1.35 2013/03/08 18:29:33 miod Exp $	*/
 /* $NetBSD: sio_pic.c,v 1.28 2000/06/06 03:10:13 thorpej Exp $ */
 
 /*-
@@ -118,6 +118,7 @@ u_int8_t initial_elcr[2];
 
 void		sio_setirqstat(int, int, int);
 int		sio_intr_alloc(void *, int, int, int *);
+int		sio_intr_check(void *, int, int);
 
 u_int8_t	(*sio_read_elcr)(int);
 void		(*sio_write_elcr)(int, u_int8_t);
@@ -580,7 +581,7 @@ sio_intr_alloc(v, mask, type, irq)
 		if (LEGAL_IRQ(i) == 0 || (mask & (1<<i)) == 0)
 			continue;
 
-		switch(sio_intr[i].intr_sharetype) {
+		switch (sio_intr[i].intr_sharetype) {
 		case IST_NONE:
 			/*
 			 * if nothing's using the irq, just return it
@@ -626,6 +627,32 @@ sio_intr_alloc(v, mask, type, irq)
 	return (0);
 }
 
+/*
+ * Just check to see if an IRQ is available/can be shared.
+ * 0 = interrupt not available
+ * 1 = interrupt shareable
+ * 2 = interrupt all to ourself
+ */
+int
+sio_intr_check(void *v, int irq, int type)
+{
+	if (type == IST_NONE)
+		return (0);
+
+	switch (sio_intr[irq].intr_sharetype) {
+	case IST_NONE:
+		return (2);
+	case IST_EDGE:
+	case IST_LEVEL:
+		if (type == sio_intr[irq].intr_sharetype)
+			return (1);
+		/* FALLTHROUGH */
+	default:
+	case IST_PULSE:
+		return (0);
+	}
+}
+
 static void
 specific_eoi(irq)
 	int irq;