Module Name: src
Committed By: skrll
Date: Tue Feb 27 08:28:56 UTC 2024
Modified Files:
src/sys/dev/ic: dwc_gmac.c
Log Message:
Enforce the device 32 bit DMA limitation via bus_dmatag_subregion if bus
can address more than 4GB.
To generate a diff of this commit:
cvs rdiff -u -r1.82 -r1.83 src/sys/dev/ic/dwc_gmac.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/ic/dwc_gmac.c
diff -u src/sys/dev/ic/dwc_gmac.c:1.82 src/sys/dev/ic/dwc_gmac.c:1.83
--- src/sys/dev/ic/dwc_gmac.c:1.82 Tue Feb 27 08:25:38 2024
+++ src/sys/dev/ic/dwc_gmac.c Tue Feb 27 08:28:56 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: dwc_gmac.c,v 1.82 2024/02/27 08:25:38 skrll Exp $ */
+/* $NetBSD: dwc_gmac.c,v 1.83 2024/02/27 08:28:56 skrll Exp $ */
/*-
* Copyright (c) 2013, 2014 The NetBSD Foundation, Inc.
@@ -41,7 +41,7 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(1, "$NetBSD: dwc_gmac.c,v 1.82 2024/02/27 08:25:38 skrll Exp $");
+__KERNEL_RCSID(1, "$NetBSD: dwc_gmac.c,v 1.83 2024/02/27 08:28:56 skrll Exp $");
/* #define DWC_GMAC_DEBUG 1 */
@@ -245,6 +245,17 @@ dwc_gmac_attach(struct dwc_gmac_softc *s
aprint_normal_dev(sc->sc_dev,
"HW feature mask: %x\n", hwft);
}
+
+ if (sizeof(bus_addr_t) > 4) {
+ int error = bus_dmatag_subregion(sc->sc_dmat, 0, __MASK(32),
+ &sc->sc_dmat, BUS_DMA_WAITOK);
+ if (error != 0) {
+ aprint_error_dev(sc->sc_dev,
+ "failed to create DMA subregion\n");
+ return ENOMEM;
+ }
+ }
+
if (hwft & GMAC_DMA_FEAT_ENHANCED_DESC) {
aprint_normal_dev(sc->sc_dev,
"Using enhanced descriptor format\n");
