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bus_dmamap_sync() is required for ICT table read/write.

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Tested by arm platform.
This commit is contained in:
hkenken 2016-11-24 12:32:47 +00:00
parent fe65e38bd3
commit 2439407e97
1 changed files with 6 additions and 2 deletions
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8
sys/dev/pci/if_iwn.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_iwn.c,v 1.79 2016/08/03 19:56:41 mlelstv Exp $ */
/* $NetBSD: if_iwn.c,v 1.80 2016/11/24 12:32:47 hkenken Exp $ */
/* $OpenBSD: if_iwn.c,v 1.135 2014/09/10 07:22:09 dcoppa Exp $ */
/*-
@ -22,7 +22,7 @@
* adapters.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_iwn.c,v 1.79 2016/08/03 19:56:41 mlelstv Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_iwn.c,v 1.80 2016/11/24 12:32:47 hkenken Exp $");
#define IWN_USE_RBUF /* Use local storage for RX */
#undef IWN_HWCRYPTO /* XXX does not even compile yet */
@ -2642,12 +2642,16 @@ iwn_intr(void *arg)
/* Read interrupts from ICT (fast) or from registers (slow). */
if (sc->sc_flags & IWN_FLAG_USE_ICT) {
bus_dmamap_sync(sc->sc_dmat, sc->ict_dma.map, 0,
IWN_ICT_SIZE, BUS_DMASYNC_POSTREAD);
tmp = 0;
while (sc->ict[sc->ict_cur] != 0) {
tmp |= sc->ict[sc->ict_cur];
sc->ict[sc->ict_cur] = 0; /* Acknowledge. */
sc->ict_cur = (sc->ict_cur + 1) % IWN_ICT_COUNT;
}
bus_dmamap_sync(sc->sc_dmat, sc->ict_dma.map, 0,
IWN_ICT_SIZE, BUS_DMASYNC_PREWRITE);
tmp = le32toh(tmp);
if (tmp == 0xffffffff) /* Shouldn't happen. */
tmp = 0;