[src/trunk]: src/sys/arch/arm/allwinner mmap support

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

details:   https://anonhg.NetBSD.org/src/rev/35fe9c705c86
branches:  trunk
changeset: 332099:35fe9c705c86
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Sep 06 20:54:53 2014 +0000

description:
mmap support

diffstat:

 sys/arch/arm/allwinner/awin_ac.c |  28 +++++++++++++++++++++++++---
 1 files changed, 25 insertions(+), 3 deletions(-)

diffs (70 lines):

diff -r 569c0bf7af1f -r 35fe9c705c86 sys/arch/arm/allwinner/awin_ac.c
--- a/sys/arch/arm/allwinner/awin_ac.c  Sat Sep 06 19:00:50 2014 +0000
+++ b/sys/arch/arm/allwinner/awin_ac.c  Sat Sep 06 20:54:53 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: awin_ac.c,v 1.9 2014/09/06 17:10:17 jmcneill Exp $ */
+/* $NetBSD: awin_ac.c,v 1.10 2014/09/06 20:54:53 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2014 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -30,7 +30,7 @@
 #include "opt_ddb.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: awin_ac.c,v 1.9 2014/09/06 17:10:17 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: awin_ac.c,v 1.10 2014/09/06 20:54:53 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -198,6 +198,7 @@
 static int     awinac_query_devinfo(void *, mixer_devinfo_t *);
 static void *  awinac_allocm(void *, int, size_t);
 static void    awinac_freem(void *, void *, size_t);
+static paddr_t awinac_mappage(void *, void *, off_t, int);
 static int     awinac_getdev(void *, struct audio_device *);
 static int     awinac_get_props(void *);
 static int     awinac_round_blocksize(void *, int, int,
@@ -222,6 +223,7 @@
        .halt_input = awinac_halt_input,
        .allocm = awinac_allocm,
        .freem = awinac_freem,
+       .mappage = awinac_mappage,
        .getdev = awinac_getdev,
        .set_port = awinac_set_port,
        .get_port = awinac_get_port,
@@ -710,6 +712,25 @@
        }
 }
 
+static paddr_t
+awinac_mappage(void *priv, void *addr, off_t off, int prot)
+{
+       struct awinac_softc *sc = priv;
+       struct awinac_dma *dma;
+
+       if (off < 0)
+               return -1;
+
+       LIST_FOREACH(dma, &sc->sc_dmalist, dma_list) {
+               if (dma->dma_addr == addr) {
+                       return bus_dmamem_mmap(sc->sc_dmat, dma->dma_segs,
+                           dma->dma_nsegs, off, prot, BUS_DMA_WAITOK);
+               }
+       }
+
+       return -1;
+}
+
 static int
 awinac_getdev(void *priv, struct audio_device *audiodev)
 {
@@ -722,7 +743,8 @@
 static int
 awinac_get_props(void *priv)
 {
-       return AUDIO_PROP_PLAYBACK|AUDIO_PROP_CAPTURE|AUDIO_PROP_INDEPENDENT;
+       return AUDIO_PROP_PLAYBACK|AUDIO_PROP_CAPTURE|
+              AUDIO_PROP_INDEPENDENT|AUDIO_PROP_MMAP;
 }
 
 static int