From d47609db9b6e0c2e5ca7eb4f181cc7b031dc2f37 Mon Sep 17 00:00:00 2001
From: andrew <andrew@FreeBSD.org>
Date: Mon, 18 Apr 2016 10:37:50 +0000
Subject: [PATCH] Pull the MSI/MSI-X handling functions out to help with INTRNG
 integration.

Obtained from:	ABT Systems Ltd
Sponsored by:	The FreeBSD Foundation
---
 sys/dev/pci/pci_host_generic.c | 69 ++++++++++++++++++++++++++++++----
 1 file changed, 62 insertions(+), 7 deletions(-)

diff --git a/sys/dev/pci/pci_host_generic.c b/sys/dev/pci/pci_host_generic.c
index 110ee68ef602..617f2f640f48 100644
--- a/sys/dev/pci/pci_host_generic.c
+++ b/sys/dev/pci/pci_host_generic.c
@@ -656,6 +656,63 @@ generic_pcie_deactivate_resource(device_t dev, device_t child, int type, int rid
 	return (res);
 }
 
+static int
+generic_pcie_alloc_msi(device_t pci, device_t child, int count, int maxcount,
+    int *irqs)
+{
+
+#if defined(__aarch64__)
+	return (arm_alloc_msi(pci, child, count, maxcount, irqs));
+#else
+	return (ENXIO);
+#endif
+}
+
+static int
+generic_pcie_release_msi(device_t pci, device_t child, int count, int *irqs)
+{
+
+#if defined(__aarch64__)
+	return (arm_release_msi(pci, child, count, irqs));
+#else
+	return (ENXIO);
+#endif
+}
+
+static int
+generic_pcie_map_msi(device_t pci, device_t child, int irq, uint64_t *addr,
+    uint32_t *data)
+{
+
+#if defined(__aarch64__)
+	return (arm_map_msi(pci, child, irq, addr, data));
+#else
+	return (ENXIO);
+#endif
+}
+
+static int
+generic_pcie_alloc_msix(device_t pci, device_t child, int *irq)
+{
+
+#if defined(__aarch64__)
+	return (arm_alloc_msix(pci, child, irq));
+#else
+	return (ENXIO);
+#endif
+}
+
+static int
+generic_pcie_release_msix(device_t pci, device_t child, int irq)
+{
+
+#if defined(__aarch64__)
+	return (arm_release_msix(pci, child, irq));
+#else
+	return (ENXIO);
+#endif
+}
+
 static device_method_t generic_pcie_methods[] = {
 	DEVMETHOD(device_probe,			generic_pcie_probe),
 	DEVMETHOD(device_attach,		pci_host_generic_attach),
@@ -674,13 +731,11 @@ static device_method_t generic_pcie_methods[] = {
 	DEVMETHOD(pcib_route_interrupt,		generic_pcie_route_interrupt),
 	DEVMETHOD(pcib_read_config,		generic_pcie_read_config),
 	DEVMETHOD(pcib_write_config,		generic_pcie_write_config),
-#if defined(__aarch64__)
-	DEVMETHOD(pcib_alloc_msi,		arm_alloc_msi),
-	DEVMETHOD(pcib_release_msi,		arm_release_msi),
-	DEVMETHOD(pcib_alloc_msix,		arm_alloc_msix),
-	DEVMETHOD(pcib_release_msix,		arm_release_msix),
-	DEVMETHOD(pcib_map_msi,			arm_map_msi),
-#endif
+	DEVMETHOD(pcib_alloc_msi,		generic_pcie_alloc_msi),
+	DEVMETHOD(pcib_release_msi,		generic_pcie_release_msi),
+	DEVMETHOD(pcib_alloc_msix,		generic_pcie_alloc_msix),
+	DEVMETHOD(pcib_release_msix,		generic_pcie_release_msix),
+	DEVMETHOD(pcib_map_msi,			generic_pcie_map_msi),
 
 	/* ofw_bus interface */
 	DEVMETHOD(ofw_bus_get_devinfo,		generic_pcie_ofw_get_devinfo),