From 515b3730c69943df4f7cc3fc58fd8343c99b852a Mon Sep 17 00:00:00 2001
From: Gleb Smirnoff <glebius@FreeBSD.org>
Date: Wed, 27 May 2015 22:25:49 +0000
Subject: [PATCH] - Don't request BUS_DMA_ALLOCNOW for dma tags, that requires
 enormous   amount of memory. - Don't request segsize of
 BUS_SPACE_MAXSIZE_32BIT, when maxsize is   MCLBYTES.

With this change bwi_attach() can succeed on i386.

Submitted by:	scottl
---
 sys/dev/bwi/if_bwi.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/sys/dev/bwi/if_bwi.c b/sys/dev/bwi/if_bwi.c
index 97b7021cd3a1..9f66ff45da7f 100644
--- a/sys/dev/bwi/if_bwi.c
+++ b/sys/dev/bwi/if_bwi.c
@@ -1921,7 +1921,7 @@ bwi_dma_alloc(struct bwi_softc *sc)
 			       BUS_SPACE_MAXSIZE,	/* maxsize */
 			       BUS_SPACE_UNRESTRICTED,	/* nsegments */
 			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
-			       BUS_DMA_ALLOCNOW,	/* flags */
+			       0,			/* flags */
 			       NULL, NULL,		/* lockfunc, lockarg */
 			       &sc->sc_parent_dtag);
 	if (error) {
@@ -1942,7 +1942,7 @@ bwi_dma_alloc(struct bwi_softc *sc)
 				tx_ring_sz,
 				1,
 				BUS_SPACE_MAXSIZE_32BIT,
-				BUS_DMA_ALLOCNOW,
+				0,
 				NULL, NULL,
 				&sc->sc_txring_dtag);
 	if (error) {
@@ -1972,7 +1972,7 @@ bwi_dma_alloc(struct bwi_softc *sc)
 				rx_ring_sz,
 				1,
 				BUS_SPACE_MAXSIZE_32BIT,
-				BUS_DMA_ALLOCNOW,
+				0,
 				NULL, NULL,
 				&sc->sc_rxring_dtag);
 	if (error) {
@@ -2097,7 +2097,7 @@ bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
 				dma_size,
 				1,
 				BUS_SPACE_MAXSIZE_32BIT,
-				BUS_DMA_ALLOCNOW,
+				0,
 				NULL, NULL,
 				&st->stats_ring_dtag);
 	if (error) {
@@ -2145,7 +2145,7 @@ bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
 				dma_size,
 				1,
 				BUS_SPACE_MAXSIZE_32BIT,
-				BUS_DMA_ALLOCNOW,
+				0,
 				NULL, NULL,
 				&st->stats_dtag);
 	if (error) {
@@ -2227,7 +2227,7 @@ bwi_dma_mbuf_create(struct bwi_softc *sc)
 				NULL, NULL,
 				MCLBYTES,
 				1,
-				BUS_SPACE_MAXSIZE_32BIT,
+				MCLBYTES,
 				BUS_DMA_ALLOCNOW,
 				NULL, NULL,
 				&sc->sc_buf_dtag);