Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

When halting a channel, abort the current DMA CB and reset the channel 

before stopping DMA.
This commit is contained in:
jmcneill 2015-08-02 16:46:12 +00:00
parent 282efd00b8
commit df3fcab6a5
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
sys/arch/arm/broadcom/bcm2835_dmac.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: bcm2835_dmac.c,v 1.11 2015/07/29 14:22:49 skrll Exp $ */
/* $NetBSD: bcm2835_dmac.c,v 1.12 2015/08/02 16:46:12 jmcneill Exp $ */
/*-
* Copyright (c) 2014 Jared D. McNeill <jmcneill@invisible.ca>
@ -29,7 +29,7 @@
#include "opt_ddb.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bcm2835_dmac.c,v 1.11 2015/07/29 14:22:49 skrll Exp $");
__KERNEL_RCSID(0, "$NetBSD: bcm2835_dmac.c,v 1.12 2015/08/02 16:46:12 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@ -275,6 +275,9 @@ bcm_dmac_transfer(struct bcm_dmac_channel *ch)
void
bcm_dmac_halt(struct bcm_dmac_channel *ch)
{
struct bcm_dmac_softc *sc = ch->ch_sc;
DMAC_WRITE(sc, DMAC_CS(ch->ch_index), DMAC_CS_RESET|DMAC_CS_ABORT);
bcm_dmac_set_conblk_addr(ch, 0);
}