diff --git a/sys/arm64/apple/apple_pcie.c b/sys/arm64/apple/apple_pcie.c
index 19c3d221aaaf..c8e78891c2bc 100644
--- a/sys/arm64/apple/apple_pcie.c
+++ b/sys/arm64/apple/apple_pcie.c
@@ -1260,6 +1265,50 @@ device_printf(dev, "bst %p bsh %lx\n", sc->base.base.bst, sc->base.base.bsh);
 	return (bus_generic_attach(dev));
 }
 
+static int
+apple_pcie_activate_resource(device_t dev, device_t child, int type, int rid,
+    struct resource *r)
+{
+	rman_res_t start, end;
+	int res;
+
+	if ((res = rman_activate_resource(r)) != 0)
+		return (res);
+
+	start = rman_get_start(r);
+	end = rman_get_end(r);
+	res = pci_host_generic_translate_resource(dev, type, start, end,
+	    &start, &end);
+	if (res != 0) {
+		rman_deactivate_resource(r);
+		return (res);
+	}
+
+	rman_set_start(r, start);
+	rman_set_end(r, end);
+
+	/* Hijack memory requests and map them nGnRE */
+	if (type == SYS_RES_MEMORY && (rman_get_flags(r) & RF_UNMAPPED) == 0) {
+		struct resource_map_request req;
+		struct resource_map map;
+
+		resource_init_map_request(&req);
+		req.memattr = VM_MEMATTR_DEVICE_nGnRE;
+		res = bus_map_resource(child, type, r, &req, &map);
+		if (res != 0) {
+			rman_deactivate_resource(r);
+			return (res);
+		}
+
+		rman_set_mapping(r, &map);
+
+		return (0);
+	}
+
+	return (BUS_ACTIVATE_RESOURCE(device_get_parent(dev), child, type,
+	    rid, r));
+}
+
 /*
  * Device method table.
  */
@@ -1268,6 +1317,8 @@ static device_method_t apple_pcie_methods[] = {
 	DEVMETHOD(device_probe,			apple_pcie_probe),
 	DEVMETHOD(device_attach,		apple_pcie_attach),
 
+	DEVMETHOD(bus_activate_resource,	apple_pcie_activate_resource),
+
 	/* PCIB interface. */
 	DEVMETHOD(pcib_read_config,		apple_pcie_read_config),
 	DEVMETHOD(pcib_write_config,		apple_pcie_write_config),
diff --git a/sys/dev/pci/pci_host_generic.c b/sys/dev/pci/pci_host_generic.c
index fbc9c2e1d3c2..cef9cf23d4ef 100644
--- a/sys/dev/pci/pci_host_generic.c
+++ b/sys/dev/pci/pci_host_generic.c
@@ -362,8 +386,8 @@ pci_host_generic_core_release_resource(device_t dev, device_t child, int type,
 	return (bus_generic_release_resource(dev, child, type, rid, res));
 }
 
-static int
-generic_pcie_translate_resource_common(device_t dev, int type, rman_res_t start,
+int
+pci_host_generic_translate_resource(device_t dev, int type, rman_res_t start,
     rman_res_t end, rman_res_t *new_start, rman_res_t *new_end)
 {
 	struct generic_pcie_core_softc *sc;
@@ -425,7 +449,7 @@ generic_pcie_translate_resource(device_t bus, int type,
 {
 	rman_res_t newend; /* unused */
 
-	return (generic_pcie_translate_resource_common(
+	return (pci_host_generic_translate_resource(
 	    bus, type, start, 0, newstart, &newend));
 }
 
@@ -491,7 +519,7 @@ generic_pcie_activate_resource(device_t dev, device_t child, int type,
 
 	start = rman_get_start(r);
 	end = rman_get_end(r);
-	res = generic_pcie_translate_resource_common(dev, type, start, end,
+	res = pci_host_generic_translate_resource(dev, type, start, end,
 	    &start, &end);
 	if (res != 0) {
 		rman_deactivate_resource(r);
diff --git a/sys/dev/pci/pci_host_generic.h b/sys/dev/pci/pci_host_generic.h
index 80da4f523165..6adfb86d1e5d 100644
--- a/sys/dev/pci/pci_host_generic.h
+++ b/sys/dev/pci/pci_host_generic.h
@@ -99,5 +99,7 @@ struct resource *pci_host_generic_core_alloc_resource(device_t, device_t, int,
     int *, rman_res_t, rman_res_t, rman_res_t, u_int);
 int pci_host_generic_core_release_resource(device_t, device_t, int, int,
     struct resource *);
+int pci_host_generic_translate_resource(device_t, int, rman_res_t, rman_res_t,
+    rman_res_t *, rman_res_t *);
 
 #endif /* __PCI_HOST_GENERIC_H_ */