Module Name: src
Committed By: jmcneill
Date: Wed Jul 3 19:46:02 UTC 2019
Modified Files:
src/sys/dev/fdt: arasan_sdhc_fdt.c
Log Message:
Enforce 32-bit limits on ADMA2 capable controllers that do not support 64-bit
descriptors
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/dev/fdt/arasan_sdhc_fdt.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/fdt/arasan_sdhc_fdt.c
diff -u src/sys/dev/fdt/arasan_sdhc_fdt.c:1.1 src/sys/dev/fdt/arasan_sdhc_fdt.c:1.2
--- src/sys/dev/fdt/arasan_sdhc_fdt.c:1.1 Wed Mar 13 12:17:45 2019
+++ src/sys/dev/fdt/arasan_sdhc_fdt.c Wed Jul 3 19:46:02 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: arasan_sdhc_fdt.c,v 1.1 2019/03/13 12:17:45 jmcneill Exp $ */
+/* $NetBSD: arasan_sdhc_fdt.c,v 1.2 2019/07/03 19:46:02 jmcneill Exp $ */
/*-
* Copyright (c) 2019 Jared McNeill <jmcne...@invisible.ca>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: arasan_sdhc_fdt.c,v 1.1 2019/03/13 12:17:45 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: arasan_sdhc_fdt.c,v 1.2 2019/07/03 19:46:02 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@@ -224,6 +224,7 @@ arasan_sdhc_attach(device_t parent, devi
bus_addr_t addr;
bus_size_t size;
u_int bus_width;
+ int error;
void *ih;
fdtbus_clock_assign(phandle);
@@ -263,8 +264,19 @@ arasan_sdhc_attach(device_t parent, devi
sc->sc_bsz = size;
sc->sc_type = of_search_compatible(phandle, compat_data)->data;
+ const uint32_t caps = bus_space_read_4(sc->sc_bst, sc->sc_bsh, SDHC_CAPABILITIES);
+ if ((caps & (SDHC_ADMA2_SUPP|SDHC_64BIT_SYS_BUS)) == SDHC_ADMA2_SUPP) {
+ error = bus_dmatag_subregion(faa->faa_dmat, 0, 0xffffffff,
+ &sc->sc_base.sc_dmat, BUS_DMA_WAITOK);
+ if (error != 0) {
+ aprint_error(": couldn't create DMA tag: %d\n", error);
+ return;
+ }
+ } else {
+ sc->sc_base.sc_dmat = faa->faa_dmat;
+ }
+
sc->sc_base.sc_dev = self;
- sc->sc_base.sc_dmat = faa->faa_dmat;
sc->sc_base.sc_host = sc->sc_host;
sc->sc_base.sc_flags = SDHC_FLAG_NO_CLKBASE |
SDHC_FLAG_USE_DMA |
