[PATCH v3 0/9] ASoC: SOF: stability fixes

[PATCH v3 0/9] ASoC: SOF: stability fixes

[Pierre-Louis Bossart]

No new functionality here but fixes to the IPC, memory allocation,
workqueues, control, runtime_pm and HDaudio support. These issues were
identified during the integration/productization of new platforms.

I added a 'Fixes' tag to make sure backports/stable can pick up these
patches, in case it's too late for them to land in 5.2

The next batch for SOF will be a set of new capabilities for trace,
IPC test, Hdaudio support, they will be submitted after additional
tests and once these fixes are reviewed/merged.

Thanks!

Changes since v2:
Removed 3 patches (Hdaudio memory allocation changes, will be
resubmitted when unclear system freeze is sorted out + patch already
merged by Mark)
Corrected merge issue with IPC patch from Guennadi

Changes since v1:
Feedback from Takashi: use spin_lock_irq instead of spin_lock_irq_save
Added Takashi's Reviewed-by tag


Guennadi Liakhovetski (1):
  ASoC: SOF: ipc: fix a race, leading to IPC timeouts

Keyon Jie (1):
  ASoC: SOF: control: correct the copy size for bytes kcontrol put

Libin Yang (1):
  ASoC: SOF: pcm: clear hw_params_upon_resume flag correctly

Pierre-Louis Bossart (2):
  ASoC: SOF: core: fix error handling with the probe workqueue
  ASoC: SOF: pcm: remove warning - initialize workqueue on open

Ranjani Sridharan (2):
  ASoC: SOF: core: remove DSP after unregistering machine driver
  ASoC: SOF: core: remove snd_soc_unregister_component in case of error

Zhu Yingjiang (2):
  ASoC: SOF: Intel: hda: fix the hda init chip
  ASoC: SOF: Intel: hda: use the defined ppcap functions

 sound/soc/sof/control.c        |   9 +--
 sound/soc/sof/core.c           |  29 +++++++--
 sound/soc/sof/intel/bdw.c      |   9 ++-
 sound/soc/sof/intel/byt.c      |  10 +--
 sound/soc/sof/intel/cnl.c      |   4 ++
 sound/soc/sof/intel/hda-ctrl.c | 102 +++++++++++++++++++++++++++---
 sound/soc/sof/intel/hda-ipc.c  |  17 ++++-
 sound/soc/sof/intel/hda.c      | 109 +++++++--------------------------
 sound/soc/sof/ipc.c            |  13 ----
 sound/soc/sof/pcm.c            |   8 +--
 10 files changed, 176 insertions(+), 134 deletions(-)


base-commit: 188d45fe779eeb8e3521b59fcb12cc48a6f2c203
-- 
2.20.1

[PATCH v3 1/9] ASoC: SOF: core: remove DSP after unregistering machine driver

[Pierre-Louis Bossart]

From: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>

snd_sof_remove() disables the DSP and unmaps the DSP BAR.
Removing topology after disabling the DSP results in a
kernel panic while unloading the pipeline widget. This is
because pipeline widget unload attempts to power down
the core it is scheduled on by accessing the DSP registers.

So, the suggested fix here is to unregister the machine driver
first to remove the topology and then disable the DSP
to avoid the situation described above.

Note that the kernel panic only happens in cases where the
HDaudio link is not managed by the hdac library,
e.g. no codec or when HDMI is not supported.
When the hdac library is used, snd_sof_remove() calls
snd_hdac_ext_bus_device_remove() to remove the codec which
unregisters the component driver thereby also removing the
topology before the DSP is disabled.

Fixes: c16211d6226 ("ASoC: SOF: Add Sound Open Firmware driver core")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/core.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index 32105e0fabe8..0bc4a8472c10 100644
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -484,7 +484,6 @@ int snd_sof_device_remove(struct device *dev)
 	snd_sof_ipc_free(sdev);
 	snd_sof_free_debug(sdev);
 	snd_sof_free_trace(sdev);
-	snd_sof_remove(sdev);
 
 	/*
 	 * Unregister machine driver. This will unbind the snd_card which
@@ -494,6 +493,14 @@ int snd_sof_device_remove(struct device *dev)
 	if (!IS_ERR_OR_NULL(pdata->pdev_mach))
 		platform_device_unregister(pdata->pdev_mach);
 
+	/*
+	 * Unregistering the machine driver results in unloading the topology.
+	 * Some widgets, ex: scheduler, attempt to power down the core they are
+	 * scheduled on, when they are unloaded. Therefore, the DSP must be
+	 * removed only after the topology has been unloaded.
+	 */
+	snd_sof_remove(sdev);
+
 	/* release firmware */
 	release_firmware(pdata->fw);
 	pdata->fw = NULL;
-- 
2.20.1

Applied "ASoC: SOF: core: remove DSP after unregistering machine driver" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: core: remove DSP after unregistering machine driver

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From b85459aafae63f250606bd406d4f7537fda33b51 Mon Sep 17 00:00:00 2001
From: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Date: Fri, 24 May 2019 14:09:17 -0500
Subject: [PATCH] ASoC: SOF: core: remove DSP after unregistering machine
 driver

snd_sof_remove() disables the DSP and unmaps the DSP BAR.
Removing topology after disabling the DSP results in a
kernel panic while unloading the pipeline widget. This is
because pipeline widget unload attempts to power down
the core it is scheduled on by accessing the DSP registers.

So, the suggested fix here is to unregister the machine driver
first to remove the topology and then disable the DSP
to avoid the situation described above.

Note that the kernel panic only happens in cases where the
HDaudio link is not managed by the hdac library,
e.g. no codec or when HDMI is not supported.
When the hdac library is used, snd_sof_remove() calls
snd_hdac_ext_bus_device_remove() to remove the codec which
unregisters the component driver thereby also removing the
topology before the DSP is disabled.

Fixes: c16211d6226 ("ASoC: SOF: Add Sound Open Firmware driver core")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/core.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index 32105e0fabe8..0bc4a8472c10 100644
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -484,7 +484,6 @@ int snd_sof_device_remove(struct device *dev)
 	snd_sof_ipc_free(sdev);
 	snd_sof_free_debug(sdev);
 	snd_sof_free_trace(sdev);
-	snd_sof_remove(sdev);
 
 	/*
 	 * Unregister machine driver. This will unbind the snd_card which
@@ -494,6 +493,14 @@ int snd_sof_device_remove(struct device *dev)
 	if (!IS_ERR_OR_NULL(pdata->pdev_mach))
 		platform_device_unregister(pdata->pdev_mach);
 
+	/*
+	 * Unregistering the machine driver results in unloading the topology.
+	 * Some widgets, ex: scheduler, attempt to power down the core they are
+	 * scheduled on, when they are unloaded. Therefore, the DSP must be
+	 * removed only after the topology has been unloaded.
+	 */
+	snd_sof_remove(sdev);
+
 	/* release firmware */
 	release_firmware(pdata->fw);
 	pdata->fw = NULL;
-- 
2.20.1

[PATCH v3 2/9] ASoC: SOF: core: remove snd_soc_unregister_component in case of error

[Pierre-Louis Bossart]

From: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>

No need to call snd_soc_unregister_component in case of error
because the component device is resource-managed.

Fixes: c16211d6226 ("ASoC: SOF: Add Sound Open Firmware driver core")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index 0bc4a8472c10..693ad83bffc9 100644
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -382,7 +382,7 @@ static int sof_probe_continue(struct snd_sof_dev *sdev)
 
 	if (IS_ERR(plat_data->pdev_mach)) {
 		ret = PTR_ERR(plat_data->pdev_mach);
-		goto comp_err;
+		goto fw_run_err;
 	}
 
 	dev_dbg(sdev->dev, "created machine %s\n",
@@ -393,8 +393,6 @@ static int sof_probe_continue(struct snd_sof_dev *sdev)
 
 	return 0;
 
-comp_err:
-	snd_soc_unregister_component(sdev->dev);
 fw_run_err:
 	snd_sof_fw_unload(sdev);
 fw_load_err:
-- 
2.20.1

Applied "ASoC: SOF: core: remove snd_soc_unregister_component in case of error" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: core: remove snd_soc_unregister_component in case of error

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 13931ae31b67a8a26a4cd417088fc43e3d4a8591 Mon Sep 17 00:00:00 2001
From: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Date: Fri, 24 May 2019 14:09:18 -0500
Subject: [PATCH] ASoC: SOF: core: remove snd_soc_unregister_component in case
 of error

No need to call snd_soc_unregister_component in case of error
because the component device is resource-managed.

Fixes: c16211d6226 ("ASoC: SOF: Add Sound Open Firmware driver core")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index 0bc4a8472c10..693ad83bffc9 100644
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -382,7 +382,7 @@ static int sof_probe_continue(struct snd_sof_dev *sdev)
 
 	if (IS_ERR(plat_data->pdev_mach)) {
 		ret = PTR_ERR(plat_data->pdev_mach);
-		goto comp_err;
+		goto fw_run_err;
 	}
 
 	dev_dbg(sdev->dev, "created machine %s\n",
@@ -393,8 +393,6 @@ static int sof_probe_continue(struct snd_sof_dev *sdev)
 
 	return 0;
 
-comp_err:
-	snd_soc_unregister_component(sdev->dev);
 fw_run_err:
 	snd_sof_fw_unload(sdev);
 fw_load_err:
-- 
2.20.1

[PATCH v3 3/9] ASoC: SOF: core: fix error handling with the probe workqueue

[Pierre-Louis Bossart]

In some configurations, it's a requirement to split the probe in two,
with a second part handled in a workqueue (e.g. for HDMI support
which depends on the DRM modules).

SOF already handles these configurations but the error flow is
incorrect. When an error occurs in the workqueue, the probe has
technically already completed. If we release the resources on errors,
this generates kernel oops/use-after-free when the resources are
released a second time on module removal.

GitHub issue: https://github.com/thesofproject/linux/issues/945
Fixes: c16211d6226 ("ASoC: SOF: Add Sound Open Firmware driver core")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/core.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index 693ad83bffc9..5beda47cdf9f 100644
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -393,6 +393,7 @@ static int sof_probe_continue(struct snd_sof_dev *sdev)
 
 	return 0;
 
+#if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
 fw_run_err:
 	snd_sof_fw_unload(sdev);
 fw_load_err:
@@ -401,6 +402,21 @@ static int sof_probe_continue(struct snd_sof_dev *sdev)
 	snd_sof_free_debug(sdev);
 dbg_err:
 	snd_sof_remove(sdev);
+#else
+
+	/*
+	 * when the probe_continue is handled in a work queue, the
+	 * probe does not fail so we don't release resources here.
+	 * They will be released with an explicit call to
+	 * snd_sof_device_remove() when the PCI/ACPI device is removed
+	 */
+
+fw_run_err:
+fw_load_err:
+ipc_err:
+dbg_err:
+
+#endif
 
 	return ret;
 }
-- 
2.20.1

Applied "ASoC: SOF: core: fix error handling with the probe workqueue" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: core: fix error handling with the probe workqueue

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 0bce512e784d137700275f7839c4547eddbd4b6a Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Fri, 24 May 2019 14:09:19 -0500
Subject: [PATCH] ASoC: SOF: core: fix error handling with the probe workqueue

In some configurations, it's a requirement to split the probe in two,
with a second part handled in a workqueue (e.g. for HDMI support
which depends on the DRM modules).

SOF already handles these configurations but the error flow is
incorrect. When an error occurs in the workqueue, the probe has
technically already completed. If we release the resources on errors,
this generates kernel oops/use-after-free when the resources are
released a second time on module removal.

GitHub issue: https://github.com/thesofproject/linux/issues/945
Fixes: c16211d6226 ("ASoC: SOF: Add Sound Open Firmware driver core")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/core.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index 693ad83bffc9..5beda47cdf9f 100644
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -393,6 +393,7 @@ static int sof_probe_continue(struct snd_sof_dev *sdev)
 
 	return 0;
 
+#if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
 fw_run_err:
 	snd_sof_fw_unload(sdev);
 fw_load_err:
@@ -401,6 +402,21 @@ static int sof_probe_continue(struct snd_sof_dev *sdev)
 	snd_sof_free_debug(sdev);
 dbg_err:
 	snd_sof_remove(sdev);
+#else
+
+	/*
+	 * when the probe_continue is handled in a work queue, the
+	 * probe does not fail so we don't release resources here.
+	 * They will be released with an explicit call to
+	 * snd_sof_device_remove() when the PCI/ACPI device is removed
+	 */
+
+fw_run_err:
+fw_load_err:
+ipc_err:
+dbg_err:
+
+#endif
 
 	return ret;
 }
-- 
2.20.1

[PATCH v3 4/9] ASoC: SOF: pcm: clear hw_params_upon_resume flag correctly

[Pierre-Louis Bossart]

From: Libin Yang <libin.yang@intel.com>

sof_pcm_hw_params() can only be called once to setup the FW hw_params.
So after calling sof_pcm_hw_params(), hw_params_upon_resume flag must
be cleared to avoid multiple invoking sof_pcm_hw_params() by prepare.

For example, after resume, there is an xrun happened, prepare() will
be called. As the hw_params_upon_resume flag is not cleared,
sof_pcm_hw_params() will be called and this will cause IPC timeout.

This patch fixes such issues.

Fixes: 868bd00f495 ("ASoC: SOF: Add PCM operations support")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/pcm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c
index 4f536c0de0a5..e94892053690 100644
--- a/sound/soc/sof/pcm.c
+++ b/sound/soc/sof/pcm.c
@@ -214,6 +214,9 @@ static int sof_pcm_hw_params(struct snd_pcm_substream *substream,
 	INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work,
 		  sof_pcm_period_elapsed_work);
 
+	/* clear hw_params_upon_resume flag */
+	spcm->hw_params_upon_resume[substream->stream] = 0;
+
 	return ret;
 }
 
@@ -428,9 +431,6 @@ static int sof_pcm_open(struct snd_pcm_substream *substream)
 	dev_dbg(sdev->dev, "pcm: open stream %d dir %d\n", spcm->pcm.pcm_id,
 		substream->stream);
 
-	/* clear hw_params_upon_resume flag */
-	spcm->hw_params_upon_resume[substream->stream] = 0;
-
 	caps = &spcm->pcm.caps[substream->stream];
 
 	/* set any runtime constraints based on topology */
-- 
2.20.1

Applied "ASoC: SOF: pcm: clear hw_params_upon_resume flag correctly" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: pcm: clear hw_params_upon_resume flag correctly

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 04ea642ff62a2b2da3d5844283991a41328f49b1 Mon Sep 17 00:00:00 2001
From: Libin Yang <libin.yang@intel.com>
Date: Fri, 24 May 2019 14:09:20 -0500
Subject: [PATCH] ASoC: SOF: pcm: clear hw_params_upon_resume flag correctly

sof_pcm_hw_params() can only be called once to setup the FW hw_params.
So after calling sof_pcm_hw_params(), hw_params_upon_resume flag must
be cleared to avoid multiple invoking sof_pcm_hw_params() by prepare.

For example, after resume, there is an xrun happened, prepare() will
be called. As the hw_params_upon_resume flag is not cleared,
sof_pcm_hw_params() will be called and this will cause IPC timeout.

This patch fixes such issues.

Fixes: 868bd00f495 ("ASoC: SOF: Add PCM operations support")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/pcm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c
index 649968841dad..d6dc9a7df0f4 100644
--- a/sound/soc/sof/pcm.c
+++ b/sound/soc/sof/pcm.c
@@ -214,6 +214,9 @@ static int sof_pcm_hw_params(struct snd_pcm_substream *substream,
 	INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work,
 		  sof_pcm_period_elapsed_work);
 
+	/* clear hw_params_upon_resume flag */
+	spcm->hw_params_upon_resume[substream->stream] = 0;
+
 	return ret;
 }
 
@@ -429,9 +432,6 @@ static int sof_pcm_open(struct snd_pcm_substream *substream)
 	dev_dbg(sdev->dev, "pcm: open stream %d dir %d\n", spcm->pcm.pcm_id,
 		substream->stream);
 
-	/* clear hw_params_upon_resume flag */
-	spcm->hw_params_upon_resume[substream->stream] = 0;
-
 	caps = &spcm->pcm.caps[substream->stream];
 
 	ret = pm_runtime_get_sync(sdev->dev);
-- 
2.20.1

[PATCH v3 5/9] ASoC: SOF: pcm: remove warning - initialize workqueue on open

[Pierre-Louis Bossart]

If the SOF hw_params() fail, typically with an IPC error thrown by the
firmware, the period_elapsed workqueue is not initialized, but we
still cancel it in hw_free(), which results in a kernel warning.

Move the initialization to the .open callback. Tested on Broadwell
(Samus) and IceLake.

Fixes: e2803e610ae ("ASoC: SOF: PCM: add period_elapsed work to fix
race condition in interrupt context")

GitHub issue: https://github.com/thesofproject/linux/issues/932
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/pcm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c
index e94892053690..6dc5f97be0bc 100644
--- a/sound/soc/sof/pcm.c
+++ b/sound/soc/sof/pcm.c
@@ -211,9 +211,6 @@ static int sof_pcm_hw_params(struct snd_pcm_substream *substream,
 	/* save pcm hw_params */
 	memcpy(&spcm->params[substream->stream], params, sizeof(*params));
 
-	INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work,
-		  sof_pcm_period_elapsed_work);
-
 	/* clear hw_params_upon_resume flag */
 	spcm->hw_params_upon_resume[substream->stream] = 0;
 
@@ -431,6 +428,9 @@ static int sof_pcm_open(struct snd_pcm_substream *substream)
 	dev_dbg(sdev->dev, "pcm: open stream %d dir %d\n", spcm->pcm.pcm_id,
 		substream->stream);
 
+	INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work,
+		  sof_pcm_period_elapsed_work);
+
 	caps = &spcm->pcm.caps[substream->stream];
 
 	/* set any runtime constraints based on topology */
-- 
2.20.1

Applied "ASoC: SOF: pcm: remove warning - initialize workqueue on open" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: pcm: remove warning - initialize workqueue on open

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From fab4edf42d2d68d0aa67822650174dcd0ee25ffa Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Fri, 24 May 2019 14:09:21 -0500
Subject: [PATCH] ASoC: SOF: pcm: remove warning - initialize workqueue on open

If the SOF hw_params() fail, typically with an IPC error thrown by the
firmware, the period_elapsed workqueue is not initialized, but we
still cancel it in hw_free(), which results in a kernel warning.

Move the initialization to the .open callback. Tested on Broadwell
(Samus) and IceLake.

Fixes: e2803e610ae ("ASoC: SOF: PCM: add period_elapsed work to fix
race condition in interrupt context")

GitHub issue: https://github.com/thesofproject/linux/issues/932
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/pcm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c
index d6dc9a7df0f4..dace6c4cd91e 100644
--- a/sound/soc/sof/pcm.c
+++ b/sound/soc/sof/pcm.c
@@ -211,9 +211,6 @@ static int sof_pcm_hw_params(struct snd_pcm_substream *substream,
 	/* save pcm hw_params */
 	memcpy(&spcm->params[substream->stream], params, sizeof(*params));
 
-	INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work,
-		  sof_pcm_period_elapsed_work);
-
 	/* clear hw_params_upon_resume flag */
 	spcm->hw_params_upon_resume[substream->stream] = 0;
 
@@ -432,6 +429,9 @@ static int sof_pcm_open(struct snd_pcm_substream *substream)
 	dev_dbg(sdev->dev, "pcm: open stream %d dir %d\n", spcm->pcm.pcm_id,
 		substream->stream);
 
+	INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work,
+		  sof_pcm_period_elapsed_work);
+
 	caps = &spcm->pcm.caps[substream->stream];
 
 	ret = pm_runtime_get_sync(sdev->dev);
-- 
2.20.1

[PATCH v3 6/9] ASoC: SOF: control: correct the copy size for bytes kcontrol put

[Pierre-Louis Bossart]

From: Keyon Jie <yang.jie@linux.intel.com>

The size for the bytes kcontrol should include the abi header, that is,
data->size + sizeof(*data), it is also aligned with get method after
this change.

Fixes: c3078f53970 ("ASoC: SOF: Add Sound Open Firmware KControl support")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/control.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sof/control.c b/sound/soc/sof/control.c
index 11762c4580f1..84e2cbfbbcbb 100644
--- a/sound/soc/sof/control.c
+++ b/sound/soc/sof/control.c
@@ -349,6 +349,7 @@ int snd_sof_bytes_put(struct snd_kcontrol *kcontrol,
 	struct snd_sof_dev *sdev = scontrol->sdev;
 	struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
 	struct sof_abi_hdr *data = cdata->data;
+	size_t size = data->size + sizeof(*data);
 	int ret, err;
 
 	if (be->max > sizeof(ucontrol->value.bytes.data)) {
@@ -358,10 +359,10 @@ int snd_sof_bytes_put(struct snd_kcontrol *kcontrol,
 		return -EINVAL;
 	}
 
-	if (data->size > be->max) {
+	if (size > be->max) {
 		dev_err_ratelimited(sdev->dev,
-				    "error: size too big %d bytes max is %d\n",
-				    data->size, be->max);
+				    "error: size too big %zu bytes max is %d\n",
+				    size, be->max);
 		return -EINVAL;
 	}
 
@@ -375,7 +376,7 @@ int snd_sof_bytes_put(struct snd_kcontrol *kcontrol,
 	}
 
 	/* copy from kcontrol */
-	memcpy(data, ucontrol->value.bytes.data, data->size);
+	memcpy(data, ucontrol->value.bytes.data, size);
 
 	/* notify DSP of byte control updates */
 	snd_sof_ipc_set_get_comp_data(sdev->ipc, scontrol,
-- 
2.20.1

Applied "ASoC: SOF: control: correct the copy size for bytes kcontrol put" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: control: correct the copy size for bytes kcontrol put

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 5661ad9490ee4abdb27295880e524acc656c89e7 Mon Sep 17 00:00:00 2001
From: Keyon Jie <yang.jie@linux.intel.com>
Date: Fri, 24 May 2019 14:09:22 -0500
Subject: [PATCH] ASoC: SOF: control: correct the copy size for bytes kcontrol
 put

The size for the bytes kcontrol should include the abi header, that is,
data->size + sizeof(*data), it is also aligned with get method after
this change.

Fixes: c3078f53970 ("ASoC: SOF: Add Sound Open Firmware KControl support")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/control.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sof/control.c b/sound/soc/sof/control.c
index 11762c4580f1..84e2cbfbbcbb 100644
--- a/sound/soc/sof/control.c
+++ b/sound/soc/sof/control.c
@@ -349,6 +349,7 @@ int snd_sof_bytes_put(struct snd_kcontrol *kcontrol,
 	struct snd_sof_dev *sdev = scontrol->sdev;
 	struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
 	struct sof_abi_hdr *data = cdata->data;
+	size_t size = data->size + sizeof(*data);
 	int ret, err;
 
 	if (be->max > sizeof(ucontrol->value.bytes.data)) {
@@ -358,10 +359,10 @@ int snd_sof_bytes_put(struct snd_kcontrol *kcontrol,
 		return -EINVAL;
 	}
 
-	if (data->size > be->max) {
+	if (size > be->max) {
 		dev_err_ratelimited(sdev->dev,
-				    "error: size too big %d bytes max is %d\n",
-				    data->size, be->max);
+				    "error: size too big %zu bytes max is %d\n",
+				    size, be->max);
 		return -EINVAL;
 	}
 
@@ -375,7 +376,7 @@ int snd_sof_bytes_put(struct snd_kcontrol *kcontrol,
 	}
 
 	/* copy from kcontrol */
-	memcpy(data, ucontrol->value.bytes.data, data->size);
+	memcpy(data, ucontrol->value.bytes.data, size);
 
 	/* notify DSP of byte control updates */
 	snd_sof_ipc_set_get_comp_data(sdev->ipc, scontrol,
-- 
2.20.1

[PATCH v3 7/9] ASoC: SOF: ipc: fix a race, leading to IPC timeouts

[Pierre-Louis Bossart]

From: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Currently on all supported platforms the IPC IRQ thread first signals
the sender when an IPC response is received from the DSP, then unmasks
the IPC interrupt. Those actions are performed without holding any
locks, so the thread can be interrupted between them. IPC timeouts
have been observed in such scenarios: if the sender is woken up and it
proceeds with sending the next message without unmasking the IPC
interrupt, it can miss the next response. This patch takes a spin-lock
to prevent the IRQ thread from being preempted at that point. It also
makes sure, that the next IPC transmission by the host cannot take
place before the IRQ thread has finished updating all the required IPC
registers.

Fixes: 53e0c72d98b ("ASoC: SOF: Add support for IPC IO between DSP and Host")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/bdw.c     |  9 ++++-----
 sound/soc/sof/intel/byt.c     | 10 +++++-----
 sound/soc/sof/intel/cnl.c     |  4 ++++
 sound/soc/sof/intel/hda-ipc.c | 17 ++++++++++++++---
 sound/soc/sof/ipc.c           | 13 -------------
 5 files changed, 27 insertions(+), 26 deletions(-)

diff --git a/sound/soc/sof/intel/bdw.c b/sound/soc/sof/intel/bdw.c
index 065cb868bdfa..8ff3ee520aea 100644
--- a/sound/soc/sof/intel/bdw.c
+++ b/sound/soc/sof/intel/bdw.c
@@ -283,6 +283,8 @@ static irqreturn_t bdw_irq_thread(int irq, void *context)
 						 SHIM_IMRX, SHIM_IMRX_DONE,
 						 SHIM_IMRX_DONE);
 
+		spin_lock_irq(&sdev->ipc_lock);
+
 		/*
 		 * handle immediate reply from DSP core. If the msg is
 		 * found, set done bit in cmd_done which is called at the
@@ -294,6 +296,8 @@ static irqreturn_t bdw_irq_thread(int irq, void *context)
 		snd_sof_ipc_reply(sdev, ipcx);
 
 		bdw_dsp_done(sdev);
+
+		spin_unlock_irq(&sdev->ipc_lock);
 	}
 
 	ipcd = snd_sof_dsp_read(sdev, BDW_DSP_BAR, SHIM_IPCD);
@@ -485,7 +489,6 @@ static void bdw_get_reply(struct snd_sof_dev *sdev)
 {
 	struct snd_sof_ipc_msg *msg = sdev->msg;
 	struct sof_ipc_reply reply;
-	unsigned long flags;
 	int ret = 0;
 
 	/*
@@ -501,8 +504,6 @@ static void bdw_get_reply(struct snd_sof_dev *sdev)
 	/* get reply */
 	sof_mailbox_read(sdev, sdev->host_box.offset, &reply, sizeof(reply));
 
-	spin_lock_irqsave(&sdev->ipc_lock, flags);
-
 	if (reply.error < 0) {
 		memcpy(msg->reply_data, &reply, sizeof(reply));
 		ret = reply.error;
@@ -521,8 +522,6 @@ static void bdw_get_reply(struct snd_sof_dev *sdev)
 	}
 
 	msg->reply_error = ret;
-
-	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
 }
 
 static void bdw_host_done(struct snd_sof_dev *sdev)
diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c
index 7bf9143d3106..9e4c07eb889b 100644
--- a/sound/soc/sof/intel/byt.c
+++ b/sound/soc/sof/intel/byt.c
@@ -329,6 +329,9 @@ static irqreturn_t byt_irq_thread(int irq, void *context)
 						   SHIM_IMRX,
 						   SHIM_IMRX_DONE,
 						   SHIM_IMRX_DONE);
+
+		spin_lock_irq(&sdev->ipc_lock);
+
 		/*
 		 * handle immediate reply from DSP core. If the msg is
 		 * found, set done bit in cmd_done which is called at the
@@ -340,6 +343,8 @@ static irqreturn_t byt_irq_thread(int irq, void *context)
 		snd_sof_ipc_reply(sdev, ipcx);
 
 		byt_dsp_done(sdev);
+
+		spin_unlock_irq(&sdev->ipc_lock);
 	}
 
 	/* new message from DSP */
@@ -383,7 +388,6 @@ static void byt_get_reply(struct snd_sof_dev *sdev)
 {
 	struct snd_sof_ipc_msg *msg = sdev->msg;
 	struct sof_ipc_reply reply;
-	unsigned long flags;
 	int ret = 0;
 
 	/*
@@ -399,8 +403,6 @@ static void byt_get_reply(struct snd_sof_dev *sdev)
 	/* get reply */
 	sof_mailbox_read(sdev, sdev->host_box.offset, &reply, sizeof(reply));
 
-	spin_lock_irqsave(&sdev->ipc_lock, flags);
-
 	if (reply.error < 0) {
 		memcpy(msg->reply_data, &reply, sizeof(reply));
 		ret = reply.error;
@@ -419,8 +421,6 @@ static void byt_get_reply(struct snd_sof_dev *sdev)
 	}
 
 	msg->reply_error = ret;
-
-	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
 }
 
 static void byt_host_done(struct snd_sof_dev *sdev)
diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index c059d1170bab..e59d180da7e2 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -64,6 +64,8 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 					CNL_DSP_REG_HIPCCTL,
 					CNL_DSP_REG_HIPCCTL_DONE, 0);
 
+		spin_lock_irq(&sdev->ipc_lock);
+
 		/* handle immediate reply from DSP core */
 		hda_dsp_ipc_get_reply(sdev);
 		snd_sof_ipc_reply(sdev, msg);
@@ -75,6 +77,8 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 		cnl_ipc_dsp_done(sdev);
 
+		spin_unlock_irq(&sdev->ipc_lock);
+
 		ret = IRQ_HANDLED;
 	}
 
diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 73ead7070cde..51b285103394 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -72,7 +72,6 @@ void hda_dsp_ipc_get_reply(struct snd_sof_dev *sdev)
 	struct snd_sof_ipc_msg *msg = sdev->msg;
 	struct sof_ipc_reply reply;
 	struct sof_ipc_cmd_hdr *hdr;
-	unsigned long flags;
 	int ret = 0;
 
 	/*
@@ -84,7 +83,6 @@ void hda_dsp_ipc_get_reply(struct snd_sof_dev *sdev)
 		dev_warn(sdev->dev, "unexpected ipc interrupt raised!\n");
 		return;
 	}
-	spin_lock_irqsave(&sdev->ipc_lock, flags);
 
 	hdr = msg->msg_data;
 	if (hdr->cmd == (SOF_IPC_GLB_PM_MSG | SOF_IPC_PM_CTX_SAVE)) {
@@ -123,7 +121,6 @@ void hda_dsp_ipc_get_reply(struct snd_sof_dev *sdev)
 out:
 	msg->reply_error = ret;
 
-	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
 }
 
 static bool hda_dsp_ipc_is_sof(uint32_t msg)
@@ -172,6 +169,18 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 					HDA_DSP_REG_HIPCCTL,
 					HDA_DSP_REG_HIPCCTL_DONE, 0);
 
+		/*
+		 * Make sure the interrupt thread cannot be preempted between
+		 * waking up the sender and re-enabling the interrupt. Also
+		 * protect against a theoretical race with sof_ipc_tx_message():
+		 * if the DSP is fast enough to receive an IPC message, reply to
+		 * it, and the host interrupt processing calls this function on
+		 * a different core from the one, where the sending is taking
+		 * place, the message might not yet be marked as expecting a
+		 * reply.
+		 */
+		spin_lock_irq(&sdev->ipc_lock);
+
 		/* handle immediate reply from DSP core - ignore ROM messages */
 		if (hda_dsp_ipc_is_sof(msg)) {
 			hda_dsp_ipc_get_reply(sdev);
@@ -187,6 +196,8 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 		/* set the done bit */
 		hda_dsp_ipc_dsp_done(sdev);
 
+		spin_unlock_irq(&sdev->ipc_lock);
+
 		ret = IRQ_HANDLED;
 	}
 
diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c
index 894e68cbd69d..10304a90cf25 100644
--- a/sound/soc/sof/ipc.c
+++ b/sound/soc/sof/ipc.c
@@ -308,19 +308,8 @@ EXPORT_SYMBOL(sof_ipc_tx_message);
 int snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
 {
 	struct snd_sof_ipc_msg *msg = &sdev->ipc->msg;
-	unsigned long flags;
-
-	/*
-	 * Protect against a theoretical race with sof_ipc_tx_message(): if the
-	 * DSP is fast enough to receive an IPC message, reply to it, and the
-	 * host interrupt processing calls this function on a different core
-	 * from the one, where the sending is taking place, the message might
-	 * not yet be marked as expecting a reply.
-	 */
-	spin_lock_irqsave(&sdev->ipc_lock, flags);
 
 	if (msg->ipc_complete) {
-		spin_unlock_irqrestore(&sdev->ipc_lock, flags);
 		dev_err(sdev->dev, "error: no reply expected, received 0x%x",
 			msg_id);
 		return -EINVAL;
@@ -330,8 +319,6 @@ int snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
 	msg->ipc_complete = true;
 	wake_up(&msg->waitq);
 
-	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
-
 	return 0;
 }
 EXPORT_SYMBOL(snd_sof_ipc_reply);
-- 
2.20.1

Applied "ASoC: SOF: ipc: fix a race, leading to IPC timeouts" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: ipc: fix a race, leading to IPC timeouts

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 1183e9a634db06825da7faba566bce50afde4357 Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Date: Fri, 24 May 2019 14:09:23 -0500
Subject: [PATCH] ASoC: SOF: ipc: fix a race, leading to IPC timeouts

Currently on all supported platforms the IPC IRQ thread first signals
the sender when an IPC response is received from the DSP, then unmasks
the IPC interrupt. Those actions are performed without holding any
locks, so the thread can be interrupted between them. IPC timeouts
have been observed in such scenarios: if the sender is woken up and it
proceeds with sending the next message without unmasking the IPC
interrupt, it can miss the next response. This patch takes a spin-lock
to prevent the IRQ thread from being preempted at that point. It also
makes sure, that the next IPC transmission by the host cannot take
place before the IRQ thread has finished updating all the required IPC
registers.

Fixes: 53e0c72d98b ("ASoC: SOF: Add support for IPC IO between DSP and Host")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/bdw.c     |  9 ++++-----
 sound/soc/sof/intel/byt.c     | 10 +++++-----
 sound/soc/sof/intel/cnl.c     |  4 ++++
 sound/soc/sof/intel/hda-ipc.c | 17 ++++++++++++++---
 sound/soc/sof/ipc.c           | 13 -------------
 5 files changed, 27 insertions(+), 26 deletions(-)

diff --git a/sound/soc/sof/intel/bdw.c b/sound/soc/sof/intel/bdw.c
index 065cb868bdfa..8ff3ee520aea 100644
--- a/sound/soc/sof/intel/bdw.c
+++ b/sound/soc/sof/intel/bdw.c
@@ -283,6 +283,8 @@ static irqreturn_t bdw_irq_thread(int irq, void *context)
 						 SHIM_IMRX, SHIM_IMRX_DONE,
 						 SHIM_IMRX_DONE);
 
+		spin_lock_irq(&sdev->ipc_lock);
+
 		/*
 		 * handle immediate reply from DSP core. If the msg is
 		 * found, set done bit in cmd_done which is called at the
@@ -294,6 +296,8 @@ static irqreturn_t bdw_irq_thread(int irq, void *context)
 		snd_sof_ipc_reply(sdev, ipcx);
 
 		bdw_dsp_done(sdev);
+
+		spin_unlock_irq(&sdev->ipc_lock);
 	}
 
 	ipcd = snd_sof_dsp_read(sdev, BDW_DSP_BAR, SHIM_IPCD);
@@ -485,7 +489,6 @@ static void bdw_get_reply(struct snd_sof_dev *sdev)
 {
 	struct snd_sof_ipc_msg *msg = sdev->msg;
 	struct sof_ipc_reply reply;
-	unsigned long flags;
 	int ret = 0;
 
 	/*
@@ -501,8 +504,6 @@ static void bdw_get_reply(struct snd_sof_dev *sdev)
 	/* get reply */
 	sof_mailbox_read(sdev, sdev->host_box.offset, &reply, sizeof(reply));
 
-	spin_lock_irqsave(&sdev->ipc_lock, flags);
-
 	if (reply.error < 0) {
 		memcpy(msg->reply_data, &reply, sizeof(reply));
 		ret = reply.error;
@@ -521,8 +522,6 @@ static void bdw_get_reply(struct snd_sof_dev *sdev)
 	}
 
 	msg->reply_error = ret;
-
-	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
 }
 
 static void bdw_host_done(struct snd_sof_dev *sdev)
diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c
index 7bf9143d3106..9e4c07eb889b 100644
--- a/sound/soc/sof/intel/byt.c
+++ b/sound/soc/sof/intel/byt.c
@@ -329,6 +329,9 @@ static irqreturn_t byt_irq_thread(int irq, void *context)
 						   SHIM_IMRX,
 						   SHIM_IMRX_DONE,
 						   SHIM_IMRX_DONE);
+
+		spin_lock_irq(&sdev->ipc_lock);
+
 		/*
 		 * handle immediate reply from DSP core. If the msg is
 		 * found, set done bit in cmd_done which is called at the
@@ -340,6 +343,8 @@ static irqreturn_t byt_irq_thread(int irq, void *context)
 		snd_sof_ipc_reply(sdev, ipcx);
 
 		byt_dsp_done(sdev);
+
+		spin_unlock_irq(&sdev->ipc_lock);
 	}
 
 	/* new message from DSP */
@@ -383,7 +388,6 @@ static void byt_get_reply(struct snd_sof_dev *sdev)
 {
 	struct snd_sof_ipc_msg *msg = sdev->msg;
 	struct sof_ipc_reply reply;
-	unsigned long flags;
 	int ret = 0;
 
 	/*
@@ -399,8 +403,6 @@ static void byt_get_reply(struct snd_sof_dev *sdev)
 	/* get reply */
 	sof_mailbox_read(sdev, sdev->host_box.offset, &reply, sizeof(reply));
 
-	spin_lock_irqsave(&sdev->ipc_lock, flags);
-
 	if (reply.error < 0) {
 		memcpy(msg->reply_data, &reply, sizeof(reply));
 		ret = reply.error;
@@ -419,8 +421,6 @@ static void byt_get_reply(struct snd_sof_dev *sdev)
 	}
 
 	msg->reply_error = ret;
-
-	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
 }
 
 static void byt_host_done(struct snd_sof_dev *sdev)
diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index 08a1a3d3c08d..b2eba7adcad8 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -64,6 +64,8 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 					CNL_DSP_REG_HIPCCTL,
 					CNL_DSP_REG_HIPCCTL_DONE, 0);
 
+		spin_lock_irq(&sdev->ipc_lock);
+
 		/* handle immediate reply from DSP core */
 		hda_dsp_ipc_get_reply(sdev);
 		snd_sof_ipc_reply(sdev, msg);
@@ -75,6 +77,8 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 		cnl_ipc_dsp_done(sdev);
 
+		spin_unlock_irq(&sdev->ipc_lock);
+
 		ret = IRQ_HANDLED;
 	}
 
diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 73ead7070cde..51b285103394 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -72,7 +72,6 @@ void hda_dsp_ipc_get_reply(struct snd_sof_dev *sdev)
 	struct snd_sof_ipc_msg *msg = sdev->msg;
 	struct sof_ipc_reply reply;
 	struct sof_ipc_cmd_hdr *hdr;
-	unsigned long flags;
 	int ret = 0;
 
 	/*
@@ -84,7 +83,6 @@ void hda_dsp_ipc_get_reply(struct snd_sof_dev *sdev)
 		dev_warn(sdev->dev, "unexpected ipc interrupt raised!\n");
 		return;
 	}
-	spin_lock_irqsave(&sdev->ipc_lock, flags);
 
 	hdr = msg->msg_data;
 	if (hdr->cmd == (SOF_IPC_GLB_PM_MSG | SOF_IPC_PM_CTX_SAVE)) {
@@ -123,7 +121,6 @@ void hda_dsp_ipc_get_reply(struct snd_sof_dev *sdev)
 out:
 	msg->reply_error = ret;
 
-	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
 }
 
 static bool hda_dsp_ipc_is_sof(uint32_t msg)
@@ -172,6 +169,18 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 					HDA_DSP_REG_HIPCCTL,
 					HDA_DSP_REG_HIPCCTL_DONE, 0);
 
+		/*
+		 * Make sure the interrupt thread cannot be preempted between
+		 * waking up the sender and re-enabling the interrupt. Also
+		 * protect against a theoretical race with sof_ipc_tx_message():
+		 * if the DSP is fast enough to receive an IPC message, reply to
+		 * it, and the host interrupt processing calls this function on
+		 * a different core from the one, where the sending is taking
+		 * place, the message might not yet be marked as expecting a
+		 * reply.
+		 */
+		spin_lock_irq(&sdev->ipc_lock);
+
 		/* handle immediate reply from DSP core - ignore ROM messages */
 		if (hda_dsp_ipc_is_sof(msg)) {
 			hda_dsp_ipc_get_reply(sdev);
@@ -187,6 +196,8 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 		/* set the done bit */
 		hda_dsp_ipc_dsp_done(sdev);
 
+		spin_unlock_irq(&sdev->ipc_lock);
+
 		ret = IRQ_HANDLED;
 	}
 
diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c
index 894e68cbd69d..10304a90cf25 100644
--- a/sound/soc/sof/ipc.c
+++ b/sound/soc/sof/ipc.c
@@ -308,19 +308,8 @@ EXPORT_SYMBOL(sof_ipc_tx_message);
 int snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
 {
 	struct snd_sof_ipc_msg *msg = &sdev->ipc->msg;
-	unsigned long flags;
-
-	/*
-	 * Protect against a theoretical race with sof_ipc_tx_message(): if the
-	 * DSP is fast enough to receive an IPC message, reply to it, and the
-	 * host interrupt processing calls this function on a different core
-	 * from the one, where the sending is taking place, the message might
-	 * not yet be marked as expecting a reply.
-	 */
-	spin_lock_irqsave(&sdev->ipc_lock, flags);
 
 	if (msg->ipc_complete) {
-		spin_unlock_irqrestore(&sdev->ipc_lock, flags);
 		dev_err(sdev->dev, "error: no reply expected, received 0x%x",
 			msg_id);
 		return -EINVAL;
@@ -330,8 +319,6 @@ int snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
 	msg->ipc_complete = true;
 	wake_up(&msg->waitq);
 
-	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
-
 	return 0;
 }
 EXPORT_SYMBOL(snd_sof_ipc_reply);
-- 
2.20.1

[PATCH v3 8/9] ASoC: SOF: Intel: hda: fix the hda init chip

[Pierre-Louis Bossart]

From: Zhu Yingjiang <yingjiang.zhu@linux.intel.com>

re-write hda_init_caps and remove the HDA reset, clean HDA
streams and clear interrupt steps in hda_dsp_probe so the
HDA init steps will not be called twice if the
CONFIG_SND_SOC_SOF_HDA is true.

Fixes: 8a300c8fb17 ("ASoC: SOF: Intel: Add HDA controller for Intel DSP")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Zhu Yingjiang <yingjiang.zhu@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/hda-ctrl.c | 102 ++++++++++++++++++++++++++++++---
 sound/soc/sof/intel/hda.c      |  99 ++++++--------------------------
 2 files changed, 112 insertions(+), 89 deletions(-)

diff --git a/sound/soc/sof/intel/hda-ctrl.c b/sound/soc/sof/intel/hda-ctrl.c
index 2c3645736e1f..07bc123112c9 100644
--- a/sound/soc/sof/intel/hda-ctrl.c
+++ b/sound/soc/sof/intel/hda-ctrl.c
@@ -161,21 +161,105 @@ int hda_dsp_ctrl_clock_power_gating(struct snd_sof_dev *sdev, bool enable)
 	return 0;
 }
 
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
-/*
- * While performing reset, controller may not come back properly and causing
- * issues, so recommendation is to set CGCTL.MISCBDCGE to 0 then do reset
- * (init chip) and then again set CGCTL.MISCBDCGE to 1
- */
 int hda_dsp_ctrl_init_chip(struct snd_sof_dev *sdev, bool full_reset)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
-	int ret;
+	struct hdac_stream *stream;
+	int sd_offset, ret = 0;
+
+	if (bus->chip_init)
+		return 0;
 
 	hda_dsp_ctrl_misc_clock_gating(sdev, false);
-	ret = snd_hdac_bus_init_chip(bus, full_reset);
+
+	if (full_reset) {
+		/* clear WAKESTS */
+		snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
+					SOF_HDA_WAKESTS_INT_MASK,
+					SOF_HDA_WAKESTS_INT_MASK);
+
+		/* reset HDA controller */
+		ret = hda_dsp_ctrl_link_reset(sdev, true);
+		if (ret < 0) {
+			dev_err(sdev->dev, "error: failed to reset HDA controller\n");
+			return ret;
+		}
+
+		usleep_range(500, 1000);
+
+		/* exit HDA controller reset */
+		ret = hda_dsp_ctrl_link_reset(sdev, false);
+		if (ret < 0) {
+			dev_err(sdev->dev, "error: failed to exit HDA controller reset\n");
+			return ret;
+		}
+
+		usleep_range(1000, 1200);
+	}
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	/* check to see if controller is ready */
+	if (!snd_hdac_chip_readb(bus, GCTL)) {
+		dev_dbg(bus->dev, "controller not ready!\n");
+		return -EBUSY;
+	}
+
+	/* Accept unsolicited responses */
+	snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, AZX_GCTL_UNSOL);
+
+	/* detect codecs */
+	if (!bus->codec_mask) {
+		bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS);
+		dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask);
+	}
+#endif
+
+	/* clear stream status */
+	list_for_each_entry(stream, &bus->stream_list, list) {
+		sd_offset = SOF_STREAM_SD_OFFSET(stream);
+		snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+					sd_offset +
+					SOF_HDA_ADSP_REG_CL_SD_STS,
+					SOF_HDA_CL_DMA_SD_INT_MASK,
+					SOF_HDA_CL_DMA_SD_INT_MASK);
+	}
+
+	/* clear WAKESTS */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
+				SOF_HDA_WAKESTS_INT_MASK,
+				SOF_HDA_WAKESTS_INT_MASK);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	/* clear rirb status */
+	snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK);
+#endif
+
+	/* clear interrupt status register */
+	snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTSTS,
+			  SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_ALL_STREAM);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	/* initialize the codec command I/O */
+	snd_hdac_bus_init_cmd_io(bus);
+#endif
+
+	/* enable CIE and GIE interrupts */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
+				SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN,
+				SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	/* program the position buffer */
+	if (bus->use_posbuf && bus->posbuf.addr) {
+		snd_hdac_chip_writel(bus, DPLBASE, (u32)bus->posbuf.addr);
+		snd_hdac_chip_writel(bus, DPUBASE,
+				     upper_32_bits(bus->posbuf.addr));
+	}
+#endif
+
+	bus->chip_init = true;
+
 	hda_dsp_ctrl_misc_clock_gating(sdev, true);
 
 	return ret;
 }
-#endif
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 7e3980a2f7ba..e47f03dc62f0 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -264,9 +264,12 @@ static const char *fixup_tplg_name(struct snd_sof_dev *sdev,
 	return tplg_filename;
 }
 
+#endif
+
 static int hda_init_caps(struct snd_sof_dev *sdev)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
 	struct hdac_ext_link *hlink;
 	struct snd_soc_acpi_mach_params *mach_params;
 	struct snd_soc_acpi_mach *hda_mach;
@@ -274,8 +277,9 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 	struct snd_soc_acpi_mach *mach;
 	const char *tplg_filename;
 	int codec_num = 0;
-	int ret = 0;
 	int i;
+#endif
+	int ret = 0;
 
 	device_disable_async_suspend(bus->dev);
 
@@ -283,6 +287,14 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 	if (bus->ppcap)
 		dev_dbg(sdev->dev, "PP capability, will probe DSP later.\n");
 
+	ret = hda_dsp_ctrl_init_chip(sdev, true);
+	if (ret < 0) {
+		dev_err(bus->dev, "error: init chip failed with ret: %d\n",
+			ret);
+		return ret;
+	}
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
 	if (bus->mlcap)
 		snd_hdac_ext_bus_get_ml_capabilities(bus);
 
@@ -293,12 +305,6 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 		return ret;
 	}
 
-	ret = hda_dsp_ctrl_init_chip(sdev, true);
-	if (ret < 0) {
-		dev_err(bus->dev, "error: init chip failed with ret: %d\n", ret);
-		goto out;
-	}
-
 	/* codec detection */
 	if (!bus->codec_mask) {
 		dev_info(bus->dev, "no hda codecs found!\n");
@@ -339,8 +345,10 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 				/* use local variable for readability */
 				tplg_filename = pdata->tplg_filename;
 				tplg_filename = fixup_tplg_name(sdev, tplg_filename);
-				if (!tplg_filename)
-					goto out;
+				if (!tplg_filename) {
+					hda_codec_i915_exit(sdev);
+					return ret;
+				}
 				pdata->tplg_filename = tplg_filename;
 			}
 		}
@@ -364,35 +372,10 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 	 */
 	list_for_each_entry(hlink, &bus->hlink_list, list)
 		snd_hdac_ext_bus_link_put(bus, hlink);
-
-	return 0;
-
-out:
-	hda_codec_i915_exit(sdev);
-	return ret;
-}
-
-#else
-
-static int hda_init_caps(struct snd_sof_dev *sdev)
-{
-	/*
-	 * set CGCTL.MISCBDCGE to 0 during reset and set back to 1
-	 * when reset finished.
-	 * TODO: maybe no need for init_caps?
-	 */
-	hda_dsp_ctrl_misc_clock_gating(sdev, 0);
-
-	/* clear WAKESTS */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
-				SOF_HDA_WAKESTS_INT_MASK,
-				SOF_HDA_WAKESTS_INT_MASK);
-
+#endif
 	return 0;
 }
 
-#endif
-
 static const struct sof_intel_dsp_desc
 	*get_chip_info(struct snd_sof_pdata *pdata)
 {
@@ -409,9 +392,8 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	struct pci_dev *pci = to_pci_dev(sdev->dev);
 	struct sof_intel_hda_dev *hdev;
 	struct hdac_bus *bus;
-	struct hdac_stream *stream;
 	const struct sof_intel_dsp_desc *chip;
-	int sd_offset, ret = 0;
+	int ret = 0;
 
 	/*
 	 * detect DSP by checking class/subclass/prog-id information
@@ -558,49 +540,6 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	if (ret < 0)
 		goto free_ipc_irq;
 
-	/* reset HDA controller */
-	ret = hda_dsp_ctrl_link_reset(sdev, true);
-	if (ret < 0) {
-		dev_err(sdev->dev, "error: failed to reset HDA controller\n");
-		goto free_ipc_irq;
-	}
-
-	/* exit HDA controller reset */
-	ret = hda_dsp_ctrl_link_reset(sdev, false);
-	if (ret < 0) {
-		dev_err(sdev->dev, "error: failed to exit HDA controller reset\n");
-		goto free_ipc_irq;
-	}
-
-	/* clear stream status */
-	list_for_each_entry(stream, &bus->stream_list, list) {
-		sd_offset = SOF_STREAM_SD_OFFSET(stream);
-		snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
-					sd_offset +
-					SOF_HDA_ADSP_REG_CL_SD_STS,
-					SOF_HDA_CL_DMA_SD_INT_MASK,
-					SOF_HDA_CL_DMA_SD_INT_MASK);
-	}
-
-	/* clear WAKESTS */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
-				SOF_HDA_WAKESTS_INT_MASK,
-				SOF_HDA_WAKESTS_INT_MASK);
-
-	/* clear interrupt status register */
-	snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTSTS,
-			  SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_ALL_STREAM);
-
-	/* enable CIE and GIE interrupts */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
-				SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN,
-				SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN);
-
-	/* re-enable CGCTL.MISCBDCGE after reset */
-	hda_dsp_ctrl_misc_clock_gating(sdev, true);
-
-	device_disable_async_suspend(&pci->dev);
-
 	/* enable DSP features */
 	snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
 				SOF_HDA_PPCTL_GPROCEN, SOF_HDA_PPCTL_GPROCEN);
-- 
2.20.1

Applied "ASoC: SOF: Intel: hda: fix the hda init chip" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Intel: hda: fix the hda init chip

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From be1b577d01787c67acc6dd1257588183386a08f4 Mon Sep 17 00:00:00 2001
From: Zhu Yingjiang <yingjiang.zhu@linux.intel.com>
Date: Fri, 24 May 2019 14:09:24 -0500
Subject: [PATCH] ASoC: SOF: Intel: hda: fix the hda init chip

re-write hda_init_caps and remove the HDA reset, clean HDA
streams and clear interrupt steps in hda_dsp_probe so the
HDA init steps will not be called twice if the
CONFIG_SND_SOC_SOF_HDA is true.

Fixes: 8a300c8fb17 ("ASoC: SOF: Intel: Add HDA controller for Intel DSP")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Zhu Yingjiang <yingjiang.zhu@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/hda-ctrl.c | 102 ++++++++++++++++++++++++++++++---
 sound/soc/sof/intel/hda.c      |  99 ++++++--------------------------
 2 files changed, 112 insertions(+), 89 deletions(-)

diff --git a/sound/soc/sof/intel/hda-ctrl.c b/sound/soc/sof/intel/hda-ctrl.c
index 2c3645736e1f..07bc123112c9 100644
--- a/sound/soc/sof/intel/hda-ctrl.c
+++ b/sound/soc/sof/intel/hda-ctrl.c
@@ -161,21 +161,105 @@ int hda_dsp_ctrl_clock_power_gating(struct snd_sof_dev *sdev, bool enable)
 	return 0;
 }
 
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
-/*
- * While performing reset, controller may not come back properly and causing
- * issues, so recommendation is to set CGCTL.MISCBDCGE to 0 then do reset
- * (init chip) and then again set CGCTL.MISCBDCGE to 1
- */
 int hda_dsp_ctrl_init_chip(struct snd_sof_dev *sdev, bool full_reset)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
-	int ret;
+	struct hdac_stream *stream;
+	int sd_offset, ret = 0;
+
+	if (bus->chip_init)
+		return 0;
 
 	hda_dsp_ctrl_misc_clock_gating(sdev, false);
-	ret = snd_hdac_bus_init_chip(bus, full_reset);
+
+	if (full_reset) {
+		/* clear WAKESTS */
+		snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
+					SOF_HDA_WAKESTS_INT_MASK,
+					SOF_HDA_WAKESTS_INT_MASK);
+
+		/* reset HDA controller */
+		ret = hda_dsp_ctrl_link_reset(sdev, true);
+		if (ret < 0) {
+			dev_err(sdev->dev, "error: failed to reset HDA controller\n");
+			return ret;
+		}
+
+		usleep_range(500, 1000);
+
+		/* exit HDA controller reset */
+		ret = hda_dsp_ctrl_link_reset(sdev, false);
+		if (ret < 0) {
+			dev_err(sdev->dev, "error: failed to exit HDA controller reset\n");
+			return ret;
+		}
+
+		usleep_range(1000, 1200);
+	}
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	/* check to see if controller is ready */
+	if (!snd_hdac_chip_readb(bus, GCTL)) {
+		dev_dbg(bus->dev, "controller not ready!\n");
+		return -EBUSY;
+	}
+
+	/* Accept unsolicited responses */
+	snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, AZX_GCTL_UNSOL);
+
+	/* detect codecs */
+	if (!bus->codec_mask) {
+		bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS);
+		dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask);
+	}
+#endif
+
+	/* clear stream status */
+	list_for_each_entry(stream, &bus->stream_list, list) {
+		sd_offset = SOF_STREAM_SD_OFFSET(stream);
+		snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+					sd_offset +
+					SOF_HDA_ADSP_REG_CL_SD_STS,
+					SOF_HDA_CL_DMA_SD_INT_MASK,
+					SOF_HDA_CL_DMA_SD_INT_MASK);
+	}
+
+	/* clear WAKESTS */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
+				SOF_HDA_WAKESTS_INT_MASK,
+				SOF_HDA_WAKESTS_INT_MASK);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	/* clear rirb status */
+	snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK);
+#endif
+
+	/* clear interrupt status register */
+	snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTSTS,
+			  SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_ALL_STREAM);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	/* initialize the codec command I/O */
+	snd_hdac_bus_init_cmd_io(bus);
+#endif
+
+	/* enable CIE and GIE interrupts */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
+				SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN,
+				SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	/* program the position buffer */
+	if (bus->use_posbuf && bus->posbuf.addr) {
+		snd_hdac_chip_writel(bus, DPLBASE, (u32)bus->posbuf.addr);
+		snd_hdac_chip_writel(bus, DPUBASE,
+				     upper_32_bits(bus->posbuf.addr));
+	}
+#endif
+
+	bus->chip_init = true;
+
 	hda_dsp_ctrl_misc_clock_gating(sdev, true);
 
 	return ret;
 }
-#endif
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 7e3980a2f7ba..e47f03dc62f0 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -264,9 +264,12 @@ static const char *fixup_tplg_name(struct snd_sof_dev *sdev,
 	return tplg_filename;
 }
 
+#endif
+
 static int hda_init_caps(struct snd_sof_dev *sdev)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
 	struct hdac_ext_link *hlink;
 	struct snd_soc_acpi_mach_params *mach_params;
 	struct snd_soc_acpi_mach *hda_mach;
@@ -274,8 +277,9 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 	struct snd_soc_acpi_mach *mach;
 	const char *tplg_filename;
 	int codec_num = 0;
-	int ret = 0;
 	int i;
+#endif
+	int ret = 0;
 
 	device_disable_async_suspend(bus->dev);
 
@@ -283,6 +287,14 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 	if (bus->ppcap)
 		dev_dbg(sdev->dev, "PP capability, will probe DSP later.\n");
 
+	ret = hda_dsp_ctrl_init_chip(sdev, true);
+	if (ret < 0) {
+		dev_err(bus->dev, "error: init chip failed with ret: %d\n",
+			ret);
+		return ret;
+	}
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
 	if (bus->mlcap)
 		snd_hdac_ext_bus_get_ml_capabilities(bus);
 
@@ -293,12 +305,6 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 		return ret;
 	}
 
-	ret = hda_dsp_ctrl_init_chip(sdev, true);
-	if (ret < 0) {
-		dev_err(bus->dev, "error: init chip failed with ret: %d\n", ret);
-		goto out;
-	}
-
 	/* codec detection */
 	if (!bus->codec_mask) {
 		dev_info(bus->dev, "no hda codecs found!\n");
@@ -339,8 +345,10 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 				/* use local variable for readability */
 				tplg_filename = pdata->tplg_filename;
 				tplg_filename = fixup_tplg_name(sdev, tplg_filename);
-				if (!tplg_filename)
-					goto out;
+				if (!tplg_filename) {
+					hda_codec_i915_exit(sdev);
+					return ret;
+				}
 				pdata->tplg_filename = tplg_filename;
 			}
 		}
@@ -364,35 +372,10 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
 	 */
 	list_for_each_entry(hlink, &bus->hlink_list, list)
 		snd_hdac_ext_bus_link_put(bus, hlink);
-
-	return 0;
-
-out:
-	hda_codec_i915_exit(sdev);
-	return ret;
-}
-
-#else
-
-static int hda_init_caps(struct snd_sof_dev *sdev)
-{
-	/*
-	 * set CGCTL.MISCBDCGE to 0 during reset and set back to 1
-	 * when reset finished.
-	 * TODO: maybe no need for init_caps?
-	 */
-	hda_dsp_ctrl_misc_clock_gating(sdev, 0);
-
-	/* clear WAKESTS */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
-				SOF_HDA_WAKESTS_INT_MASK,
-				SOF_HDA_WAKESTS_INT_MASK);
-
+#endif
 	return 0;
 }
 
-#endif
-
 static const struct sof_intel_dsp_desc
 	*get_chip_info(struct snd_sof_pdata *pdata)
 {
@@ -409,9 +392,8 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	struct pci_dev *pci = to_pci_dev(sdev->dev);
 	struct sof_intel_hda_dev *hdev;
 	struct hdac_bus *bus;
-	struct hdac_stream *stream;
 	const struct sof_intel_dsp_desc *chip;
-	int sd_offset, ret = 0;
+	int ret = 0;
 
 	/*
 	 * detect DSP by checking class/subclass/prog-id information
@@ -558,49 +540,6 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	if (ret < 0)
 		goto free_ipc_irq;
 
-	/* reset HDA controller */
-	ret = hda_dsp_ctrl_link_reset(sdev, true);
-	if (ret < 0) {
-		dev_err(sdev->dev, "error: failed to reset HDA controller\n");
-		goto free_ipc_irq;
-	}
-
-	/* exit HDA controller reset */
-	ret = hda_dsp_ctrl_link_reset(sdev, false);
-	if (ret < 0) {
-		dev_err(sdev->dev, "error: failed to exit HDA controller reset\n");
-		goto free_ipc_irq;
-	}
-
-	/* clear stream status */
-	list_for_each_entry(stream, &bus->stream_list, list) {
-		sd_offset = SOF_STREAM_SD_OFFSET(stream);
-		snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
-					sd_offset +
-					SOF_HDA_ADSP_REG_CL_SD_STS,
-					SOF_HDA_CL_DMA_SD_INT_MASK,
-					SOF_HDA_CL_DMA_SD_INT_MASK);
-	}
-
-	/* clear WAKESTS */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
-				SOF_HDA_WAKESTS_INT_MASK,
-				SOF_HDA_WAKESTS_INT_MASK);
-
-	/* clear interrupt status register */
-	snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTSTS,
-			  SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_ALL_STREAM);
-
-	/* enable CIE and GIE interrupts */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
-				SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN,
-				SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN);
-
-	/* re-enable CGCTL.MISCBDCGE after reset */
-	hda_dsp_ctrl_misc_clock_gating(sdev, true);
-
-	device_disable_async_suspend(&pci->dev);
-
 	/* enable DSP features */
 	snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
 				SOF_HDA_PPCTL_GPROCEN, SOF_HDA_PPCTL_GPROCEN);
-- 
2.20.1

[PATCH v3 9/9] ASoC: SOF: Intel: hda: use the defined ppcap functions

[Pierre-Louis Bossart]

From: Zhu Yingjiang <yingjiang.zhu@linux.intel.com>

There are already defined ppcap and ppcap interrupt functions, use
the already defined functions for easy code read.

Fixes: 8a300c8fb17 ("ASoC: SOF: Intel: Add HDA controller for Intel DSP")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Zhu Yingjiang <yingjiang.zhu@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/hda.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index e47f03dc62f0..7edeee4fc74b 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -540,13 +540,9 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	if (ret < 0)
 		goto free_ipc_irq;
 
-	/* enable DSP features */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
-				SOF_HDA_PPCTL_GPROCEN, SOF_HDA_PPCTL_GPROCEN);
-
-	/* enable DSP IRQ */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
-				SOF_HDA_PPCTL_PIE, SOF_HDA_PPCTL_PIE);
+	/* enable ppcap interrupt */
+	hda_dsp_ctrl_ppcap_enable(sdev, true);
+	hda_dsp_ctrl_ppcap_int_enable(sdev, true);
 
 	/* initialize waitq for code loading */
 	init_waitqueue_head(&sdev->waitq);
-- 
2.20.1

Applied "ASoC: SOF: Intel: hda: use the defined ppcap functions" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Intel: hda: use the defined ppcap functions

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 970c43d1783539b75a5e234ff5e51fc5c888112f Mon Sep 17 00:00:00 2001
From: Zhu Yingjiang <yingjiang.zhu@linux.intel.com>
Date: Fri, 24 May 2019 14:09:25 -0500
Subject: [PATCH] ASoC: SOF: Intel: hda: use the defined ppcap functions

There are already defined ppcap and ppcap interrupt functions, use
the already defined functions for easy code read.

Fixes: 8a300c8fb17 ("ASoC: SOF: Intel: Add HDA controller for Intel DSP")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Zhu Yingjiang <yingjiang.zhu@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/hda.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index b1f4db0a6895..92c546e93400 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -544,13 +544,9 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	if (ret < 0)
 		goto free_ipc_irq;
 
-	/* enable DSP features */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
-				SOF_HDA_PPCTL_GPROCEN, SOF_HDA_PPCTL_GPROCEN);
-
-	/* enable DSP IRQ */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
-				SOF_HDA_PPCTL_PIE, SOF_HDA_PPCTL_PIE);
+	/* enable ppcap interrupt */
+	hda_dsp_ctrl_ppcap_enable(sdev, true);
+	hda_dsp_ctrl_ppcap_int_enable(sdev, true);
 
 	/* initialize waitq for code loading */
 	init_waitqueue_head(&sdev->waitq);
-- 
2.20.1