diff options
| author | nonaka <nonaka@NetBSD.org> | 2014-11-09 19:57:53 +0000 |
|---|---|---|
| committer | nonaka <nonaka@NetBSD.org> | 2014-11-09 19:57:53 +0000 |
| commit | 2eadb60bf035fb5a164981437f1fcd9c342bbbdf (patch) | |
| tree | 9b9c1bccc8fc06a0ce7d99a61c951b8e5822c1fc /sys/dev/pci | |
| parent | 3bc86ab0c834d26c793ca332c5b7f080b0c5c213 (diff) | |
Wait for the RIRB DMA engine to come ready. Needed on the audio device
integrated in the Vortex86EX SoC. From OpenBSD.
Diffstat (limited to 'sys/dev/pci')
| -rw-r--r-- | sys/dev/pci/azalia.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sys/dev/pci/azalia.c b/sys/dev/pci/azalia.c index a212d551cb4..ba4d292de55 100644 --- a/sys/dev/pci/azalia.c +++ b/sys/dev/pci/azalia.c @@ -1,4 +1,4 @@ -/* $NetBSD: azalia.c,v 1.82 2014/09/21 14:30:22 christos Exp $ */ +/* $NetBSD: azalia.c,v 1.83 2014/11/09 19:57:53 nonaka Exp $ */ /*- * Copyright (c) 2005, 2008 The NetBSD Foundation, Inc. @@ -41,7 +41,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: azalia.c,v 1.82 2014/09/21 14:30:22 christos Exp $"); +__KERNEL_RCSID(0, "$NetBSD: azalia.c,v 1.83 2014/11/09 19:57:53 nonaka Exp $"); #include <sys/param.h> #include <sys/device.h> @@ -816,6 +816,17 @@ azalia_init_rirb(azalia_t *az, int reinit) /* Run! */ rirbctl = AZ_READ_1(az, RIRBCTL); AZ_WRITE_1(az, RIRBCTL, rirbctl | HDA_RIRBCTL_RIRBDMAEN | HDA_RIRBCTL_RINTCTL); + for (i = 5000; i >= 0; i--) { + DELAY(10); + rirbctl = AZ_READ_1(az, RIRBCTL); + if (rirbctl & HDA_RIRBCTL_RIRBDMAEN) + break; + } + if (i <= 0) { + aprint_error_dev(az->dev, "RIRB is not running\n"); + return EBUSY; + } + return 0; } |
