[src/trunk]: src/sys/dev/sdmmc eSDHC has no DMA_BOUNDARY in BLOCK_SIZE register.

[nonaka <nonaka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7a391de8afc4
branches:  trunk
changeset: 806512:7a391de8afc4
user:      nonaka <nonaka%NetBSD.org@localhost>
date:      Fri Feb 27 15:53:09 2015 +0000

description:
eSDHC has no DMA_BOUNDARY in BLOCK_SIZE register.
So clear multi segment DMA transfer support bit.

diffstat:

 sys/dev/sdmmc/sdhc.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (29 lines):

diff -r 59e16c950050 -r 7a391de8afc4 sys/dev/sdmmc/sdhc.c
--- a/sys/dev/sdmmc/sdhc.c      Fri Feb 27 15:35:10 2015 +0000
+++ b/sys/dev/sdmmc/sdhc.c      Fri Feb 27 15:53:09 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sdhc.c,v 1.53 2015/02/27 01:52:15 nonaka Exp $ */
+/*     $NetBSD: sdhc.c,v 1.54 2015/02/27 15:53:09 nonaka Exp $ */
 /*     $OpenBSD: sdhc.c,v 1.25 2009/01/13 19:44:20 grange Exp $        */
 
 /*
@@ -23,7 +23,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sdhc.c,v 1.53 2015/02/27 01:52:15 nonaka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sdhc.c,v 1.54 2015/02/27 15:53:09 nonaka Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_sdmmc.h"
@@ -425,7 +425,9 @@
        if (ISSET(caps, SDHC_HIGH_SPEED_SUPP))
                saa.saa_caps |= SMC_CAPS_SD_HIGHSPEED;
        if (ISSET(hp->flags, SHF_USE_DMA)) {
-               saa.saa_caps |= SMC_CAPS_DMA | SMC_CAPS_MULTI_SEG_DMA;
+               saa.saa_caps |= SMC_CAPS_DMA;
+               if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED))
+                       saa.saa_caps |= SMC_CAPS_MULTI_SEG_DMA;
        }
        if (ISSET(sc->sc_flags, SDHC_FLAG_SINGLE_ONLY))
                saa.saa_caps |= SMC_CAPS_SINGLE_ONLY;