Set base DMA pointers when DMA starts.

The allocm() functions are supposed to allocate memory and it's bad
style to access the hardware there, so move the DMA base pointers
setup to the trigger_xxx().

ok kettenis@

1 files changed, 5 insertions, 10 deletions

diff --git a/sys/dev/pci/envy.c b/sys/dev/pci/envy.c
index c620a27335c..a12d15e4bd6 100644
--- a/sys/dev/pci/envy.c
+++ b/sys/dev/pci/envy.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: envy.c,v 1.70 2017/03/28 05:23:15 ratchov Exp $	*/
+/*	$OpenBSD: envy.c,v 1.71 2018/03/17 13:33:08 ratchov Exp $	*/
 /*
  * Copyright (c) 2007 Alexandre Ratchov <alex@caoua.org>
  *
@@ -1742,17 +1742,11 @@ void *
 envy_allocm(void *self, int dir, size_t size, int type, int flags)
 {
 	struct envy_softc *sc = (struct envy_softc *)self;
-	int err, basereg, wait;
+	int err, wait;
 	struct envy_buf *buf;
 	bus_addr_t dma_addr;
 
-	if (dir == AUMODE_RECORD) {
-		buf = &sc->ibuf;
-		basereg = ENVY_MT_RADDR;
-	} else {
-		buf = &sc->obuf;
-		basereg = ENVY_MT_PADDR;
-	}
+	buf = (dir == AUMODE_RECORD) ? &sc->ibuf : &sc->obuf;
 	if (buf->addr != NULL) {
 		DPRINTF("%s: multiple alloc, dir = %d\n", DEVNAME(sc), dir);
 		return NULL;
@@ -1789,7 +1783,6 @@ envy_allocm(void *self, int dir, size_t size, int type, int flags)
 		printf("%s: DMA address beyond 0x10000000\n", DEVNAME(sc));
 		goto err_unload;
 	}
-	envy_mt_write_4(sc, basereg, dma_addr);
 	return buf->addr;
  err_unload:
 	bus_dmamap_unload(sc->pci_dmat, buf->map);
@@ -2051,6 +2044,7 @@ envy_trigger_output(void *self, void *start, void *end, int blksz,
 	}
 #endif
 	mtx_enter(&audio_lock);
+	envy_mt_write_4(sc, ENVY_MT_PADDR, sc->obuf.map->dm_segs[0].ds_addr);
 	envy_mt_write_2(sc, ENVY_MT_PBUFSZ, bufsz / 4 - 1);
 	envy_mt_write_2(sc, ENVY_MT_PBLKSZ(sc), blksz / 4 - 1);
 
@@ -2097,6 +2091,7 @@ envy_trigger_input(void *self, void *start, void *end, int blksz,
 	}
 #endif
 	mtx_enter(&audio_lock);
+	envy_mt_write_4(sc, ENVY_MT_RADDR, sc->ibuf.map->dm_segs[0].ds_addr);
 	envy_mt_write_2(sc, ENVY_MT_RBUFSZ, bufsz / 4 - 1);
 	envy_mt_write_2(sc, ENVY_MT_RBLKSZ, blksz / 4 - 1);