From: kettenis <kettenis@openbsd.org>
Date: Sat, 24 Jan 2015 15:15:50 +0000 (+0000)
Subject: Use bus_dmamem_alloc_range(9) to make sure the ring descriprtors can be
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=5ed3837b51452a086b330785e4cf1b51d4ce1641;p=openbsd

Use bus_dmamem_alloc_range(9) to make sure the ring descriprtors can be
accessed by the device.

ok deraadt@, stsp@
---

diff --git a/sys/dev/pci/if_bce.c b/sys/dev/pci/if_bce.c
index 537353a8b93..98df2a42356 100644
--- a/sys/dev/pci/if_bce.c
+++ b/sys/dev/pci/if_bce.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: if_bce.c,v 1.40 2014/12/22 02:28:51 tedu Exp $ */
+/* $OpenBSD: if_bce.c,v 1.41 2015/01/24 15:15:50 kettenis Exp $ */
 /* $NetBSD: if_bce.c,v 1.3 2003/09/29 01:53:02 mrg Exp $	 */
 
 /*
@@ -315,8 +315,9 @@ bce_attach(struct device *parent, struct device *self, void *aux)
 	 * XXX PAGE_SIZE is wasteful; we only need 1KB + 1KB, but
 	 * due to the limition above. ??
 	 */
-	if ((error = bus_dmamem_alloc(sc->bce_dmatag, 2 * PAGE_SIZE,
-	    PAGE_SIZE, 2 * PAGE_SIZE, &seg, 1, &rseg, BUS_DMA_NOWAIT))) {
+	if ((error = bus_dmamem_alloc_range(sc->bce_dmatag, 2 * PAGE_SIZE,
+	    PAGE_SIZE, 2 * PAGE_SIZE, &seg, 1, &rseg, BUS_DMA_NOWAIT,
+	    (bus_addr_t)0, (bus_addr_t)0x3fffffff))) {
 		printf(": unable to alloc space for ring descriptors, "
 		    "error = %d\n", error);
 		uvm_km_free(kernel_map, (vaddr_t)sc->bce_data,