Initial support for MSI-X. Only supported on amd64 for now. I have diffs to

actually use this in em(4) and xhci(4), but I'm not committing those yet
because we almost certainly need to save and restore the MSI-X registers
during suspend/resume.  However, this allows mpi@ to play with multiple-vector
support in networking hardware.

Requested by mpi@
ok mlarkin@, mikeb@

15 files changed, 175 insertions, 16 deletions

diff --git a/sys/arch/alpha/pci/pci_machdep.h b/sys/arch/alpha/pci/pci_machdep.h
index fc80bd0f306..7168db82d87 100644
--- a/sys/arch/alpha/pci/pci_machdep.h
+++ b/sys/arch/alpha/pci/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.29 2015/07/26 05:09:44 miod Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.30 2016/05/04 14:30:00 kettenis Exp $	*/
 /*	$NetBSD: pci_machdep.h,v 1.6 1996/11/19 04:49:21 cgd Exp $	*/
 
 /*
@@ -104,6 +104,7 @@ int alpha_sysctl_chipset(int *, u_int, char *, size_t *);
 #define	pci_conf_write(c, t, r, v)					\
     (*(c)->pc_conf_write)((c)->pc_conf_v, (t), (r), (v))
 #define	pci_intr_map_msi(pa, ihp)	(-1)
+#define	pci_intr_map_msix(pa, vec, ihp)	(-1)
 #define	pci_intr_string(c, ih)						\
     (*(c)->pc_intr_string)((c)->pc_intr_v, (ih))
 #define	pci_intr_line(c, ih)						\
diff --git a/sys/arch/amd64/include/i82093var.h b/sys/arch/amd64/include/i82093var.h
index 41b16842da6..9877422de42 100644
--- a/sys/arch/amd64/include/i82093var.h
+++ b/sys/arch/amd64/include/i82093var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: i82093var.h,v 1.4 2011/05/21 15:58:27 kettenis Exp $	*/
+/*	$OpenBSD: i82093var.h,v 1.5 2016/05/04 14:30:00 kettenis Exp $	*/
 /* $NetBSD: i82093var.h,v 1.1 2003/02/26 21:26:10 fvdl Exp $ */
 
 /*-
@@ -70,6 +70,7 @@ struct ioapic_softc {
 
 #define APIC_INT_VIA_APIC	0x10000000
 #define APIC_INT_VIA_MSG	0x20000000
+#define APIC_INT_VIA_MSGX	0x40000000
 #define APIC_INT_APIC_MASK	0x00ff0000
 #define APIC_INT_APIC_SHIFT	16
 #define APIC_INT_PIN_MASK	0x0000ff00
diff --git a/sys/arch/amd64/include/pci_machdep.h b/sys/arch/amd64/include/pci_machdep.h
index 09ad9888707..27b833b52cc 100644
--- a/sys/arch/amd64/include/pci_machdep.h
+++ b/sys/arch/amd64/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.24 2015/10/29 23:08:45 miod Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.25 2016/05/04 14:30:00 kettenis Exp $	*/
 /*	$NetBSD: pci_machdep.h,v 1.1 2003/02/26 21:26:11 fvdl Exp $	*/
 
 /*
@@ -82,7 +82,10 @@ int		pci_conf_size(pci_chipset_tag_t, pcitag_t);
 pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
 void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
 		    pcireg_t);
-int		pci_intr_map_msi(struct pci_attach_args *, pci_intr_handle_t *);
+int		pci_intr_map_msi(struct pci_attach_args *,
+		    pci_intr_handle_t *);
+int		pci_intr_map_msix(struct pci_attach_args *,
+		    int, pci_intr_handle_t *);
 int		pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
 const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
 void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
diff --git a/sys/arch/amd64/pci/pci_machdep.c b/sys/arch/amd64/pci/pci_machdep.c
index 37532dabc16..6ce0ce4961e 100644
--- a/sys/arch/amd64/pci/pci_machdep.c
+++ b/sys/arch/amd64/pci/pci_machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.c,v 1.62 2015/03/14 03:38:46 jsg Exp $	*/
+/*	$OpenBSD: pci_machdep.c,v 1.63 2016/05/04 14:30:00 kettenis Exp $	*/
 /*	$NetBSD: pci_machdep.c,v 1.3 2003/05/07 21:33:58 fvdl Exp $	*/
 
 /*-
@@ -395,6 +395,143 @@ pci_intr_map_msi(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
 	return 0;
 }
 
+void msix_hwmask(struct pic *, int);
+void msix_hwunmask(struct pic *, int);
+void msix_addroute(struct pic *, struct cpu_info *, int, int, int);
+void msix_delroute(struct pic *, struct cpu_info *, int, int, int);
+
+struct pic msix_pic = {
+	{0, {NULL}, NULL, 0, "msix", NULL, 0, 0},
+	PIC_MSI,
+#ifdef MULTIPROCESSOR
+	{},
+#endif
+	msix_hwmask,
+	msix_hwunmask,
+	msix_addroute,
+	msix_delroute,
+	NULL,
+	ioapic_edge_stubs
+};
+
+/*
+ * We pack the MSI-X vector number into the lower 8 bits of the PCI
+ * tag and use that as the MSI-X "PIC" pin number.  This allows us to
+ * address 256 MSI-X vectors which ought to be enough for anybody.
+ */
+#define PCI_MSIX_VEC_MASK	0xff
+#define PCI_MSIX_VEC(pin)	((pin) & PCI_MSIX_VEC_MASK)
+#define PCI_MSIX_TAG(pin)	((pin) & ~PCI_MSIX_VEC_MASK)
+#define PCI_MSIX_PIN(tag, vec)	((tag) | (vec))
+
+void
+msix_hwmask(struct pic *pic, int pin)
+{
+}
+
+void
+msix_hwunmask(struct pic *pic, int pin)
+{
+}
+
+void
+msix_addroute(struct pic *pic, struct cpu_info *ci, int pin, int vec, int type)
+{
+	pci_chipset_tag_t pc = NULL; /* XXX */
+	bus_space_tag_t memt = X86_BUS_SPACE_MEM; /* XXX */
+	bus_space_handle_t memh;
+	bus_addr_t base;
+	pcitag_t tag = PCI_MSIX_TAG(pin);
+	int entry = PCI_MSIX_VEC(pin);
+	pcireg_t reg, addr, table;
+	uint32_t ctrl;
+	int bir, offset;
+	int off, tblsz;
+
+	if (pci_get_capability(pc, tag, PCI_CAP_MSIX, &off, &reg) == 0)
+		panic("%s: no msix capability", __func__);
+
+	addr = 0xfee00000UL | (ci->ci_apicid << 12);
+
+	table = pci_conf_read(pc, tag, off + PCI_MSIX_TABLE);
+	bir = (table & PCI_MSIX_TABLE_BIR);
+	offset = (table & PCI_MSIX_TABLE_OFF);
+	tblsz = (reg & PCI_MSIX_MC_TBLSZ) + 1;
+
+	bir = PCI_MAPREG_START + bir * 4;
+	if (pci_mem_find(pc, tag, bir, &base, NULL, NULL) ||
+	    _bus_space_map(memt, base + offset, tblsz * 16, 0, &memh))
+		panic("%s: cannot map registers", __func__);
+
+	bus_space_write_8(memt, memh, PCI_MSIX_MA(entry), addr);
+	bus_space_write_4(memt, memh, PCI_MSIX_MD(entry), vec);
+	bus_space_barrier(memt, memh, PCI_MSIX_MA(entry), 16,
+	    BUS_SPACE_BARRIER_WRITE);
+	ctrl = bus_space_read_4(memt, memh, PCI_MSIX_VC(entry));
+	bus_space_write_4(memt, memh, PCI_MSIX_VC(entry),
+	    ctrl & ~PCI_MSIX_VC_MASK);
+
+	_bus_space_unmap(memt, memh, tblsz * 16, NULL);
+
+	pci_conf_write(pc, tag, off, reg | PCI_MSIX_MC_MSIXE);
+}
+
+void
+msix_delroute(struct pic *pic, struct cpu_info *ci, int pin, int vec, int type)
+{
+	pci_chipset_tag_t pc = NULL; /* XXX */
+	bus_space_tag_t memt = X86_BUS_SPACE_MEM; /* XXX */
+	bus_space_handle_t memh;
+	bus_addr_t base;
+	pcitag_t tag = PCI_MSIX_TAG(pin);
+	int entry = PCI_MSIX_VEC(pin);
+	pcireg_t reg, table;
+	uint32_t ctrl;
+	int bir, offset;
+	int off, tblsz;
+
+	if (pci_get_capability(pc, tag, PCI_CAP_MSIX, &off, &reg) == 0)
+		return;
+
+	table = pci_conf_read(pc, tag, off + PCI_MSIX_TABLE);
+	bir = (table & PCI_MSIX_TABLE_BIR);
+	offset = (table & PCI_MSIX_TABLE_OFF);
+	tblsz = (reg & PCI_MSIX_MC_TBLSZ) + 1;
+
+	bir = PCI_MAPREG_START + bir * 4;
+	if (pci_mem_find(pc, tag, bir, &base, NULL, NULL) ||
+	    _bus_space_map(memt, base + offset, tblsz * 16, 0, &memh))
+		panic("%s: cannot map registers", __func__);
+
+	ctrl = bus_space_read_4(memt, memh, PCI_MSIX_VC(entry));
+	bus_space_write_4(memt, memh, PCI_MSIX_VC(entry),
+	    ctrl | PCI_MSIX_VC_MASK);
+
+	_bus_space_unmap(memt, memh, tblsz * 16, NULL);
+}
+
+int
+pci_intr_map_msix(struct pci_attach_args *pa, int vec, pci_intr_handle_t *ihp)
+{
+	pci_chipset_tag_t pc = pa->pa_pc;
+	pcitag_t tag = pa->pa_tag;
+	pcireg_t reg;
+
+	KASSERT(PCI_MSIX_VEC(vec) == vec);
+
+	if ((pa->pa_flags & PCI_FLAGS_MSI_ENABLED) == 0 || mp_busses == NULL ||
+	    pci_get_capability(pc, tag, PCI_CAP_MSIX, NULL, NULL) == 0)
+		return 1;
+
+	if (vec > (reg & PCI_MSIX_MC_TBLSZ))
+		return 1;
+
+	ihp->tag = PCI_MSIX_PIN(tag, vec);
+	ihp->line = APIC_INT_VIA_MSGX;
+	ihp->pin = 0;
+	return 0;
+}
+
 int
 pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
 {
@@ -527,6 +664,8 @@ pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih)
 
 	if (ih.line & APIC_INT_VIA_MSG)
 		return ("msi");
+	if (ih.line & APIC_INT_VIA_MSGX)
+		return ("msix");
 
 #if NIOAPIC > 0
 	if (ih.line & APIC_INT_VIA_APIC)
@@ -559,6 +698,10 @@ pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level,
 		return intr_establish(-1, &msi_pic, tag, IST_PULSE, level,
 		    func, arg, what);
 	}
+	if (ih.line & APIC_INT_VIA_MSGX) {
+		return intr_establish(-1, &msix_pic, tag, IST_PULSE, level,
+		    func, arg, what);
+	}
 
 	pci_decompose_tag(pc, ih.tag, &bus, &dev, NULL);
 #if NACPIPRT > 0
diff --git a/sys/arch/arm/include/pci_machdep.h b/sys/arch/arm/include/pci_machdep.h
index 6686b5aa936..94517e8f20c 100644
--- a/sys/arch/arm/include/pci_machdep.h
+++ b/sys/arch/arm/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.13 2013/11/05 10:12:35 mpi Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.14 2016/05/04 14:30:00 kettenis Exp $	*/
 /*	$NetBSD: pci_machdep.h,v 1.2 2002/05/15 19:23:52 thorpej Exp $	*/
 
 /*
@@ -93,6 +93,7 @@ struct arm32_pci_chipset {
 #define	pci_intr_map(pa, ihp)						\
     (*(pa)->pa_pc->pc_intr_map)((pa), (ihp))
 #define	pci_intr_map_msi(pa, ihp)	(-1)
+#define	pci_intr_map_msix(pa, vec, ihp)	(-1)
 #define	pci_intr_string(c, ih)						\
     (*(c)->pc_intr_string)((c)->pc_intr_v, (ih))
 #define	pci_intr_establish(c, ih, l, h, a, n)				\
diff --git a/sys/arch/hppa/include/pci_machdep.h b/sys/arch/hppa/include/pci_machdep.h
index 38ee309a419..7e3d77b6f87 100644
--- a/sys/arch/hppa/include/pci_machdep.h
+++ b/sys/arch/hppa/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.11 2013/11/05 10:12:35 mpi Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.12 2016/05/04 14:30:00 kettenis Exp $	*/
 
 /*
  * Copyright (c) 2003 Michael Shalayeff
@@ -81,6 +81,7 @@ struct hppa_pci_chipset_tag {
 #define	pci_intr_map(p, ihp)						\
     (*(p)->pa_pc->pc_intr_map)((p), (ihp))
 #define	pci_intr_map_msi(p, ihp)	(-1)
+#define	pci_intr_map_msix(p, vec, ihp)	(-1)
 #define	pci_intr_line(c, ih)	(ih)
 #define	pci_intr_string(c, ih)						\
     (*(c)->pc_intr_string)((c)->_cookie, (ih))
diff --git a/sys/arch/hppa64/include/pci_machdep.h b/sys/arch/hppa64/include/pci_machdep.h
index 53aaf52bae8..78dea0654ac 100644
--- a/sys/arch/hppa64/include/pci_machdep.h
+++ b/sys/arch/hppa64/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.11 2013/11/05 10:12:35 mpi Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.12 2016/05/04 14:30:00 kettenis Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -72,6 +72,7 @@ struct hppa64_pci_chipset_tag {
 #define	pci_intr_map(p, ihp)						\
     (*(p)->pa_pc->pc_intr_map)((p), (ihp))
 #define	pci_intr_map_msi(p, ihp)	(-1)
+#define	pci_intr_map_msix(p, vec, ihp)	(-1)
 #define	pci_intr_line(c, ih)	(ih)
 #define	pci_intr_string(c, ih)						\
     (*(c)->pc_intr_string)((c)->_cookie, (ih))
diff --git a/sys/arch/i386/pci/pci_machdep.h b/sys/arch/i386/pci/pci_machdep.h
index dc89d98ab49..283147033ca 100644
--- a/sys/arch/i386/pci/pci_machdep.h
+++ b/sys/arch/i386/pci/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.27 2015/07/17 22:42:09 kettenis Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.28 2016/05/04 14:30:00 kettenis Exp $	*/
 /*	$NetBSD: pci_machdep.h,v 1.7 1997/06/06 23:29:18 thorpej Exp $	*/
 
 /*
@@ -99,6 +99,7 @@ void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
 struct pci_attach_args;
 int		pci_intr_map_msi(struct pci_attach_args *, pci_intr_handle_t *);
 int		pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
+#define		pci_intr_map_msix(p, vec, ihp)	(-1)
 #define		pci_intr_line(c, ih)	((ih).line)
 const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
 void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
diff --git a/sys/arch/landisk/include/pci_machdep.h b/sys/arch/landisk/include/pci_machdep.h
index c142c26c8f7..6d24a51d979 100644
--- a/sys/arch/landisk/include/pci_machdep.h
+++ b/sys/arch/landisk/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.9 2013/11/05 10:12:35 mpi Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.10 2016/05/04 14:30:01 kettenis Exp $	*/
 /*	$NetBSD: pci_machdep.h,v 1.1 2006/09/01 21:26:18 uwe Exp $	*/
 
 /*
@@ -76,6 +76,7 @@ void landisk_pci_conf_interrupt(void *v, int bus, int dev, int pin,
 #define	pci_intr_map(pa, ihp) \
 	landisk_pci_intr_map(pa, ihp)
 #define	pci_intr_map_msi(pa, ihp)	(-1)
+#define	pci_intr_map_msix(pa, vec, ihp)	(-1)
 #define	pci_intr_string(v, ih) \
 	landisk_pci_intr_string(v, ih)
 #define	pci_intr_establish(v, ih, level, ih_fun, ih_arg, ih_name) \
diff --git a/sys/arch/loongson/include/pci_machdep.h b/sys/arch/loongson/include/pci_machdep.h
index 10b97a58e48..32f50c4e9de 100644
--- a/sys/arch/loongson/include/pci_machdep.h
+++ b/sys/arch/loongson/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.9 2014/03/27 22:16:03 miod Exp $ */
+/*	$OpenBSD: pci_machdep.h,v 1.10 2016/05/04 14:30:01 kettenis Exp $ */
 
 /*
  * Copyright (c) 2003-2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -76,6 +76,7 @@ struct mips_pci_chipset {
 #define	pci_intr_map(c, ihp)				\
     (*(c)->pa_pc->pc_intr_map)((c), (ihp))
 #define	pci_intr_map_msi(c, ihp)	(-1)
+#define	pci_intr_map_msix(c, vec, ihp)	(-1)
 #define	pci_intr_string(c, ih)						\
     (*(c)->pc_intr_string)((c)->pc_intr_v, (ih))
 #define	pci_intr_establish(c, ih, l, h, a, nm)				\
diff --git a/sys/arch/macppc/include/pci_machdep.h b/sys/arch/macppc/include/pci_machdep.h
index 73c7cdbc162..51ff69bdbd1 100644
--- a/sys/arch/macppc/include/pci_machdep.h
+++ b/sys/arch/macppc/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.2 2013/11/05 10:12:35 mpi Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.3 2016/05/04 14:30:01 kettenis Exp $	*/
 /*	$NetBSD: pci_machdep.h,v 1.7 2001/07/20 00:07:14 eeh Exp $ */
 
 /*
@@ -85,6 +85,7 @@ pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
 void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
 int		pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
 int		pci_intr_map_msi(struct pci_attach_args *, pci_intr_handle_t *);
+#define		pci_intr_map_msix(p, vec, ihp)	(-1)
 int		pci_intr_line(pci_chipset_tag_t, pci_intr_handle_t);
 const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
 void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
diff --git a/sys/arch/octeon/include/pci_machdep.h b/sys/arch/octeon/include/pci_machdep.h
index b868e06b61d..0793512cd56 100644
--- a/sys/arch/octeon/include/pci_machdep.h
+++ b/sys/arch/octeon/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.7 2013/11/05 10:12:35 mpi Exp $ */
+/*	$OpenBSD: pci_machdep.h,v 1.8 2016/05/04 14:30:01 kettenis Exp $ */
 
 /*
  * Copyright (c) 2003-2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -104,6 +104,7 @@ static inline void pci_conf_write_db(void * c, pcitag_t t, int r, pcireg_t v,
 #define	pci_intr_map(c, ihp)				\
     (*(c)->pa_pc->pc_intr_map)((c), (ihp))
 #define	pci_intr_map_msi(c, ihp)	(-1)
+#define	pci_intr_map_msix(c, vec, ihp)	(-1)
 #define	pci_intr_string(c, ih)						\
     (*(c)->pc_intr_string)((c)->pc_intr_v, (ih))
 #define	pci_intr_establish(c, ih, l, h, a, nm)				\
diff --git a/sys/arch/sgi/pci/pci_machdep.h b/sys/arch/sgi/pci/pci_machdep.h
index bedc7b65fec..3c656596bb6 100644
--- a/sys/arch/sgi/pci/pci_machdep.h
+++ b/sys/arch/sgi/pci/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.16 2013/11/05 10:12:35 mpi Exp $ */
+/*	$OpenBSD: pci_machdep.h,v 1.17 2016/05/04 14:30:01 kettenis Exp $ */
 
 /*
  * Copyright (c) 2003-2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -87,6 +87,7 @@ struct mips_pci_chipset {
 #define	pci_intr_map(c, ihp)						\
     (*(c)->pa_pc->pc_intr_map)((c), (ihp))
 #define	pci_intr_map_msi(c, ihp)	(-1)
+#define	pci_intr_map_msix(c, vec, ihp)	(-1)
 #define	pci_intr_string(c, ih)						\
     (*(c)->pc_intr_string)((c)->pc_intr_v, (ih))
 #define	pci_intr_establish(c, ih, l, h, a, nm)				\
diff --git a/sys/arch/socppc/include/pci_machdep.h b/sys/arch/socppc/include/pci_machdep.h
index 1871d23b1a1..0553eb73b6c 100644
--- a/sys/arch/socppc/include/pci_machdep.h
+++ b/sys/arch/socppc/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.2 2013/11/05 10:12:35 mpi Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.3 2016/05/04 14:30:01 kettenis Exp $	*/
 
 /*
  * Copyright (c) 1996 Carnegie-Mellon University.
@@ -86,6 +86,7 @@ struct ppc_pci_chipset {
     (*((pa)->pa_pc)->pc_intr_map)((pa)->pa_pc->pc_intr_v, 		\
 	(pa)->pa_intrtag, (pa)->pa_intrpin, (pa)->pa_intrline, (ihp))
 #define	pci_intr_map_msi(pa, ihp)	(-1)
+#define	pci_intr_map_msix(pa, vec, ihp)	(-1)
 #define	pci_intr_string(c, ih)						\
     (*(c)->pc_intr_string)((c)->pc_intr_v, (ih))
 #define	pci_intr_line(c, ih)						\
diff --git a/sys/arch/sparc64/include/pci_machdep.h b/sys/arch/sparc64/include/pci_machdep.h
index 032fca935f1..bd48fe9e075 100644
--- a/sys/arch/sparc64/include/pci_machdep.h
+++ b/sys/arch/sparc64/include/pci_machdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.h,v 1.32 2013/11/05 10:12:35 mpi Exp $	*/
+/*	$OpenBSD: pci_machdep.h,v 1.33 2016/05/04 14:30:01 kettenis Exp $	*/
 /* $NetBSD: pci_machdep.h,v 1.7 2001/07/20 00:07:14 eeh Exp $ */
 
 /*
@@ -88,6 +88,7 @@ void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
 				    pcireg_t);
 int		pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
 int		pci_intr_map_msi(struct pci_attach_args *, pci_intr_handle_t *);
+#define		pci_intr_map_msix(pa, vec, ihp)	(-1)
 int		pci_intr_line(pci_chipset_tag_t, pci_intr_handle_t);
 const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
 void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,