[rtems-libbsd commit] rtwn_usb: Make sure buffers are cache aligned
Christian Mauderer
christianm at rtems.org
Fri Jul 31 06:32:44 UTC 2020
Module: rtems-libbsd
Branch: master
Commit: 36b588eb8bb74677cdbe1728cbdc96890fd818bb
Changeset: http://git.rtems.org/rtems-libbsd/commit/?id=36b588eb8bb74677cdbe1728cbdc96890fd818bb
Author: Christian Mauderer <christian.mauderer at embedded-brains.de>
Date: Wed May 27 09:55:06 2020 +0200
rtwn_usb: Make sure buffers are cache aligned
---
freebsd/sys/dev/rtwn/usb/rtwn_usb_attach.c | 11 +++++++++++
freebsd/sys/dev/rtwn/usb/rtwn_usb_tx.c | 7 +++++++
2 files changed, 18 insertions(+)
diff --git a/freebsd/sys/dev/rtwn/usb/rtwn_usb_attach.c b/freebsd/sys/dev/rtwn/usb/rtwn_usb_attach.c
index 8626d0a..fad41f3 100644
--- a/freebsd/sys/dev/rtwn/usb/rtwn_usb_attach.c
+++ b/freebsd/sys/dev/rtwn/usb/rtwn_usb_attach.c
@@ -37,6 +37,10 @@ __FBSDID("$FreeBSD$");
#include <sys/endian.h>
#include <sys/linker.h>
#include <sys/kdb.h>
+#ifdef __rtems__
+#include <machine/rtems-bsd-cache.h>
+#include <rtems/malloc.h>
+#endif /* __rtems__ */
#include <net/if.h>
#include <net/if_var.h>
@@ -115,7 +119,14 @@ rtwn_usb_alloc_list(struct rtwn_softc *sc, struct rtwn_data data[],
for (i = 0; i < ndata; i++) {
struct rtwn_data *dp = &data[i];
dp->m = NULL;
+#if defined(__rtems__) && defined(CPU_DATA_CACHE_ALIGNMENT)
+ maxsz = maxsz + (CPU_DATA_CACHE_ALIGNMENT - 1) &
+ ~(CPU_DATA_CACHE_ALIGNMENT - 1);
+ dp->buf = rtems_heap_allocate_aligned_with_boundary(maxsz,
+ CPU_DATA_CACHE_ALIGNMENT, 0);
+#else /* __rtems__ */
dp->buf = malloc(maxsz, M_USBDEV, M_NOWAIT);
+#endif /* __rtems__ */
if (dp->buf == NULL) {
device_printf(sc->sc_dev,
"could not allocate buffer\n");
diff --git a/freebsd/sys/dev/rtwn/usb/rtwn_usb_tx.c b/freebsd/sys/dev/rtwn/usb/rtwn_usb_tx.c
index 61f0ba4..14762c0 100644
--- a/freebsd/sys/dev/rtwn/usb/rtwn_usb_tx.c
+++ b/freebsd/sys/dev/rtwn/usb/rtwn_usb_tx.c
@@ -64,6 +64,10 @@ __FBSDID("$FreeBSD$");
#include <dev/rtwn/usb/rtwn_usb_reg.h>
#include <dev/rtwn/usb/rtwn_usb_tx.h>
+#ifdef __rtems__
+#include <machine/rtems-bsd-cache.h>
+#endif /* __rtems__ */
+
static struct rtwn_data * _rtwn_usb_getbuf(struct rtwn_usb_softc *);
static struct rtwn_data * rtwn_usb_getbuf(struct rtwn_usb_softc *);
static void rtwn_usb_txeof(struct rtwn_usb_softc *,
@@ -170,6 +174,9 @@ tr_setup:
if (data->ni == NULL && RTWN_CHIP_HAS_BCNQ1(sc))
rtwn_switch_bcnq(sc, data->id);
usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
+#if defined(__rtems__) && defined(CPU_DATA_CACHE_ALIGNMENT)
+ usbd_xfer_frame_allow_cache_line_blow_up(xfer, 0);
+#endif /* __rtems__ */
usbd_transfer_submit(xfer);
if (sc->sc_ratectl != RTWN_RATECTL_NET80211)
sc->sc_tx_n_active++;
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