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Message-ID: <20241028105050.3559169-2-sashal@kernel.org>
Date: Mon, 28 Oct 2024 06:49:44 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Amadeusz Sławiński <amadeuszx.slawinski@...ux.intel.com>,
Cezary Rojewski <cezary.rojewski@...el.com>,
Mark Brown <broonie@...nel.org>,
Sasha Levin <sashal@...nel.org>,
liam.r.girdwood@...ux.intel.com,
peter.ujfalusi@...ux.intel.com,
yung-chuan.liao@...ux.intel.com,
ranjani.sridharan@...ux.intel.com,
kai.vehmanen@...ux.intel.com,
perex@...ex.cz,
tiwai@...e.com,
bhelgaas@...gle.com,
pierre-louis.bossart@...ux.dev,
dlemoal@...nel.org,
krzysztof.kozlowski@...aro.org,
jbrunet@...libre.com,
linux-sound@...r.kernel.org
Subject: [PATCH AUTOSEL 6.11 02/32] ASoC: Intel: avs: Update stream status in a separate thread
From: Amadeusz Sławiński <amadeuszx.slawinski@...ux.intel.com>
[ Upstream commit 0dbb186c3510cad4e9f443e801bf2e6ab5770c00 ]
Function snd_pcm_period_elapsed() is part of sequence servicing HDAudio
stream IRQs. It's called under Global Interrupt Enable (GIE) disabled -
no HDAudio interrupts will be raised. At the same time, the function may
end up calling __snd_pcm_xrun() or snd_pcm_drain_done(). On the
avs-driver side, this translates to IPCs and as GIE is disabled, these
will never complete successfully.
Improve system stability by scheduling stream-IRQ handling in a separate
thread.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@...ux.intel.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@...el.com>
Link: https://patch.msgid.link/20241008083758.756578-1-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
sound/soc/intel/avs/core.c | 3 ++-
sound/soc/intel/avs/pcm.c | 19 +++++++++++++++++++
sound/soc/intel/avs/pcm.h | 16 ++++++++++++++++
3 files changed, 37 insertions(+), 1 deletion(-)
create mode 100644 sound/soc/intel/avs/pcm.h
diff --git a/sound/soc/intel/avs/core.c b/sound/soc/intel/avs/core.c
index f2dc82a2abc71..4d1e6c84918c6 100644
--- a/sound/soc/intel/avs/core.c
+++ b/sound/soc/intel/avs/core.c
@@ -28,6 +28,7 @@
#include "avs.h"
#include "cldma.h"
#include "messages.h"
+#include "pcm.h"
static u32 pgctl_mask = AZX_PGCTL_LSRMD_MASK;
module_param(pgctl_mask, uint, 0444);
@@ -247,7 +248,7 @@ static void hdac_stream_update_pos(struct hdac_stream *stream, u64 buffer_size)
static void hdac_update_stream(struct hdac_bus *bus, struct hdac_stream *stream)
{
if (stream->substream) {
- snd_pcm_period_elapsed(stream->substream);
+ avs_period_elapsed(stream->substream);
} else if (stream->cstream) {
u64 buffer_size = stream->cstream->runtime->buffer_size;
diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c
index c76b86254a8b4..37b1880c81141 100644
--- a/sound/soc/intel/avs/pcm.c
+++ b/sound/soc/intel/avs/pcm.c
@@ -16,6 +16,7 @@
#include <sound/soc-component.h>
#include "avs.h"
#include "path.h"
+#include "pcm.h"
#include "topology.h"
#include "../../codecs/hda.h"
@@ -30,6 +31,7 @@ struct avs_dma_data {
struct hdac_ext_stream *host_stream;
};
+ struct work_struct period_elapsed_work;
struct snd_pcm_substream *substream;
};
@@ -56,6 +58,22 @@ avs_dai_find_path_template(struct snd_soc_dai *dai, bool is_fe, int direction)
return dw->priv;
}
+static void avs_period_elapsed_work(struct work_struct *work)
+{
+ struct avs_dma_data *data = container_of(work, struct avs_dma_data, period_elapsed_work);
+
+ snd_pcm_period_elapsed(data->substream);
+}
+
+void avs_period_elapsed(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+ struct snd_soc_dai *dai = snd_soc_rtd_to_cpu(rtd, 0);
+ struct avs_dma_data *data = snd_soc_dai_get_dma_data(dai, substream);
+
+ schedule_work(&data->period_elapsed_work);
+}
+
static int avs_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
@@ -77,6 +95,7 @@ static int avs_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_d
data->substream = substream;
data->template = template;
data->adev = adev;
+ INIT_WORK(&data->period_elapsed_work, avs_period_elapsed_work);
snd_soc_dai_set_dma_data(dai, substream, data);
if (rtd->dai_link->ignore_suspend)
diff --git a/sound/soc/intel/avs/pcm.h b/sound/soc/intel/avs/pcm.h
new file mode 100644
index 0000000000000..0f3615c903982
--- /dev/null
+++ b/sound/soc/intel/avs/pcm.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright(c) 2024 Intel Corporation
+ *
+ * Authors: Cezary Rojewski <cezary.rojewski@...el.com>
+ * Amadeusz Slawinski <amadeuszx.slawinski@...ux.intel.com>
+ */
+
+#ifndef __SOUND_SOC_INTEL_AVS_PCM_H
+#define __SOUND_SOC_INTEL_AVS_PCM_H
+
+#include <sound/pcm.h>
+
+void avs_period_elapsed(struct snd_pcm_substream *substream);
+
+#endif
--
2.43.0
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