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Date:   Fri, 25 May 2018 19:03:23 +0530
From:   Shreyas NC <shreyas.nc@intel.com>
To:     Guenter Roeck <linux@roeck-us.net>
Cc:     Takashi Iwai <tiwai@suse.com>, Mark Brown <broonie@kernel.org>,
        Liam Girdwood <lgirdwood@gmail.com>,
        alsa-devel@alsa-project.org,
        Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
        linux-kernel@vger.kernel.org,
        Chintan Patel <chintan.m.patel@intel.com>,
        Guenter Roeck <groeck@chromium.org>, vkoul@kernel.org
Subject: Re: [alsa-devel] [PATCH v2 1/3] ASoC: topology: Improve backwards
 compatibility with v4 topology files
Message-ID: <20180525133323.GI3116@snc-desk>
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Adding Vinod to help review as well..
> Commit dc31e741db49 ("ASoC: topology: ABI - Add the types for BE
> DAI") introduced sound topology files version 5. Initially, this
> change made the topology code incompatible with v4 topology files.
> Backwards compatibility with v4 configuration files was
> subsequently added with commit 288b8da7e992 ("ASoC: topology:
> Support topology file of ABI v4").
> 
> Unfortunately, backwards compatibility was never fully implemented.
> 
> First, the manifest size in (Skylake) v4 configuration files is set
> to 0, which causes manifest_new_ver() to bail out with error messages
> similar to the following.
> 
> snd_soc_skl 0000:00:1f.3: ASoC: invalid manifest size
> snd_soc_skl 0000:00:1f.3: tplg component load failed-22
> snd_soc_skl 0000:00:1f.3: Failed to init topology!
> snd_soc_skl 0000:00:1f.3: ASoC: failed to probe component -22
> skl_n88l25_m98357a skl_n88l25_m98357a: ASoC: failed to instantiate card -22
> skl_n88l25_m98357a: probe of skl_n88l25_m98357a failed with error -22
> 
> After this problem is fixed, the following error message is seen instead.
> 
> snd_soc_skl 0000:00:1f.3: ASoC: old version of manifest
> snd_soc_skl 0000:00:1f.3: Invalid descriptor token 1093938482
> snd_soc_skl 0000:00:1f.3: ASoC: failed to load widget media0_in cpr 0
> snd_soc_skl 0000:00:1f.3: tPlg component load failed-22
> 
> This message is seen because backwards compatibility for loading widgets
> was never implemented.
> 
> The lack of audio support when running the upstream kernel on recent
> Chromebooks has been reported in various forums, and can be traced back
> to this problem. Attempts to fix the problem, usually by providing v5
> configuration files, were only partially successful.
> 
> Let's implement backward compatibility properly to solve the problem
> for good.
> 
> Signed-off-by: Guenter Roeck <groeck@chromium.org>
> ---
> Tested on Caroline (Samsung Chromebook Pro) and Chell (HP Chromebook 13
> G1) running v4.17-rc6 plus this patch, with original (v4) configuration
> files. Also tested on several other Chromebooks with this patch on top
> of chromeos-4.14.
> 
> v2:
> - Move on from RFC/RFT to real patch
> - Move v4 structure definitions into header file
> - Add support for copying private capabilities
> - Declare skl_dfw_v4_module_caps as __packed
> - Drop duplicate assignment of mconfig->pipe->state
> 
>  sound/soc/intel/skylake/skl-topology.c       | 169 +++++++++++++++++++
>  sound/soc/intel/skylake/skl-tplg-interface.h |  74 ++++++++
>  sound/soc/soc-topology.c                     |   7 +-
>  3 files changed, 248 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c
> index 3b1dca419883..9e4c2cb88dea 100644
> --- a/sound/soc/intel/skylake/skl-topology.c
> +++ b/sound/soc/intel/skylake/skl-topology.c
> @@ -19,6 +19,7 @@
>  #include <linux/slab.h>
>  #include <linux/types.h>
>  #include <linux/firmware.h>
> +#include <linux/uuid.h>
>  #include <sound/soc.h>
>  #include <sound/soc-topology.h>
>  #include <uapi/sound/snd_sst_tokens.h>
> @@ -2724,6 +2725,167 @@ static int skl_tplg_get_desc_blocks(struct device *dev,
>  	return -EINVAL;
>  }
>  
> +/* Functions to parse private data from configuration file format v4 */
> +
> +/*
> + * Add pipeline from topology binary into driver pipeline list
> + *
> + * If already added we return that instance
> + * Otherwise we create a new instance and add into driver list
> + */
> +static int skl_tplg_add_pipe_v4(struct device *dev,
> +				struct skl_module_cfg *mconfig, struct skl *skl,
> +				struct skl_dfw_v4_pipe *dfw_pipe)
> +{
> +	struct skl_pipeline *ppl;
> +	struct skl_pipe *pipe;
> +	struct skl_pipe_params *params;
> +
> +	list_for_each_entry(ppl, &skl->ppl_list, node) {
> +		if (ppl->pipe->ppl_id == dfw_pipe->pipe_id) {
> +			mconfig->pipe = ppl->pipe;
> +			return 0;
> +		}
> +	}
> +
> +	ppl = devm_kzalloc(dev, sizeof(*ppl), GFP_KERNEL);
> +	if (!ppl)
> +		return -ENOMEM;
> +
> +	pipe = devm_kzalloc(dev, sizeof(*pipe), GFP_KERNEL);
> +	if (!pipe)
> +		return -ENOMEM;
> +
> +	params = devm_kzalloc(dev, sizeof(*params), GFP_KERNEL);
> +	if (!params)
> +		return -ENOMEM;
> +
> +	pipe->ppl_id = dfw_pipe->pipe_id;
> +	pipe->memory_pages = dfw_pipe->memory_pages;
> +	pipe->pipe_priority = dfw_pipe->pipe_priority;
> +	pipe->conn_type = dfw_pipe->conn_type;
> +	pipe->state = SKL_PIPE_INVALID;
> +	pipe->p_params = params;
> +	INIT_LIST_HEAD(&pipe->w_list);
> +
> +	ppl->pipe = pipe;
> +	list_add(&ppl->node, &skl->ppl_list);
> +
> +	mconfig->pipe = pipe;
> +
> +	return 0;
> +}
> +
> +static void skl_fill_module_pin_info_v4(struct skl_dfw_v4_module_pin *dfw_pin,
> +					struct skl_module_pin *m_pin,
> +					bool is_dynamic, int max_pin)
> +{
> +	int i;
> +
> +	for (i = 0; i < max_pin; i++) {
> +		m_pin[i].id.module_id = dfw_pin[i].module_id;
> +		m_pin[i].id.instance_id = dfw_pin[i].instance_id;
> +		m_pin[i].in_use = false;
> +		m_pin[i].is_dynamic = is_dynamic;
> +		m_pin[i].pin_state = SKL_PIN_UNBIND;
> +	}
> +}
> +
> +static void skl_tplg_fill_fmt_v4(struct skl_module_pin_fmt *dst_fmt,
> +				 struct skl_dfw_v4_module_fmt *src_fmt,
> +				 int pins)
> +{
> +	int i;
> +
> +	for (i = 0; i < pins; i++) {
> +		dst_fmt[i].fmt.channels  = src_fmt[i].channels;
> +		dst_fmt[i].fmt.s_freq = src_fmt[i].freq;
> +		dst_fmt[i].fmt.bit_depth = src_fmt[i].bit_depth;
> +		dst_fmt[i].fmt.valid_bit_depth = src_fmt[i].valid_bit_depth;
> +		dst_fmt[i].fmt.ch_cfg = src_fmt[i].ch_cfg;
> +		dst_fmt[i].fmt.ch_map = src_fmt[i].ch_map;
> +		dst_fmt[i].fmt.interleaving_style =
> +						src_fmt[i].interleaving_style;
> +		dst_fmt[i].fmt.sample_type = src_fmt[i].sample_type;
> +	}
> +}
> +
> +static int skl_tplg_get_pvt_data_v4(struct snd_soc_tplg_dapm_widget *tplg_w,
> +				    struct skl *skl, struct device *dev,
> +				    struct skl_module_cfg *mconfig)
> +{
> +	struct skl_dfw_v4_module *dfw =
> +				(struct skl_dfw_v4_module *)tplg_w->priv.data;
> +	int ret;
> +
> +	dev_dbg(dev, "Parsing Skylake v4 widget topology data\n");
> +
> +	ret = guid_parse(dfw->uuid, (guid_t *)mconfig->guid);
> +	if (ret)
> +		return ret;
> +	mconfig->id.module_id = -1;
> +	mconfig->id.instance_id = dfw->instance_id;
> +	mconfig->module->resources[0].cps = dfw->max_mcps;
> +	mconfig->module->resources[0].ibs = dfw->ibs;
> +	mconfig->module->resources[0].obs = dfw->obs;
> +	mconfig->core_id = dfw->core_id;
> +	mconfig->module->max_input_pins = dfw->max_in_queue;
> +	mconfig->module->max_output_pins = dfw->max_out_queue;
> +	mconfig->module->loadable = dfw->is_loadable;
> +	skl_tplg_fill_fmt_v4(mconfig->module->formats[0].inputs, dfw->in_fmt,
> +			     MAX_IN_QUEUE);
> +	skl_tplg_fill_fmt_v4(mconfig->module->formats[0].outputs, dfw->out_fmt,
> +			     MAX_OUT_QUEUE);
> +
> +	mconfig->params_fixup = dfw->params_fixup;
> +	mconfig->converter = dfw->converter;
> +	mconfig->m_type = dfw->module_type;
> +	mconfig->vbus_id = dfw->vbus_id;
> +	mconfig->module->resources[0].is_pages = dfw->mem_pages;
> +
> +	ret = skl_tplg_add_pipe_v4(dev, mconfig, skl, &dfw->pipe);
> +	if (ret)
> +		return ret;
> +
> +	mconfig->dev_type = dfw->dev_type;
> +	mconfig->hw_conn_type = dfw->hw_conn_type;
> +	mconfig->time_slot = dfw->time_slot;
> +	mconfig->formats_config.caps_size = dfw->caps.caps_size;
> +
> +	mconfig->m_in_pin = devm_kzalloc(dev,
> +				MAX_IN_QUEUE * sizeof(*mconfig->m_in_pin),
> +				GFP_KERNEL);
> +	if (!mconfig->m_in_pin)
> +		return -ENOMEM;
> +
> +	mconfig->m_out_pin = devm_kzalloc(dev,
> +				MAX_OUT_QUEUE * sizeof(*mconfig->m_out_pin),
> +				GFP_KERNEL);
> +	if (!mconfig->m_out_pin)
> +		return -ENOMEM;
> +
> +	skl_fill_module_pin_info_v4(dfw->in_pin, mconfig->m_in_pin,
> +				    dfw->is_dynamic_in_pin,
> +				    mconfig->module->max_input_pins);
> +	skl_fill_module_pin_info_v4(dfw->out_pin, mconfig->m_out_pin,
> +				    dfw->is_dynamic_out_pin,
> +				    mconfig->module->max_output_pins);
> +
> +	if (mconfig->formats_config.caps_size) {
> +		mconfig->formats_config.set_params = dfw->caps.set_params;
> +		mconfig->formats_config.param_id = dfw->caps.param_id;
> +		mconfig->formats_config.caps =
> +		devm_kzalloc(dev, mconfig->formats_config.caps_size,
> +			     GFP_KERNEL);
> +		if (!mconfig->formats_config.caps)
> +			return -ENOMEM;
> +		memcpy(mconfig->formats_config.caps, dfw->caps.caps,
> +		       dfw->caps.caps_size);
> +	}
> +
> +	return 0;
> +}
> +
>  /*
>   * Parse the private data for the token and corresponding value.
>   * The private data can have multiple data blocks. So, a data block
> @@ -2739,6 +2901,13 @@ static int skl_tplg_get_pvt_data(struct snd_soc_tplg_dapm_widget *tplg_w,
>  	char *data;
>  	int ret;
>  
> +	/*
> +	 * v4 configuration files have a valid UUID at the start of
> +	 * the widget's private data.
> +	 */
> +	if (uuid_is_valid((char *)tplg_w->priv.data))
> +		return skl_tplg_get_pvt_data_v4(tplg_w, skl, dev, mconfig);
> +
>  	/* Read the NUM_DATA_BLOCKS descriptor */
>  	array = (struct snd_soc_tplg_vendor_array *)tplg_w->priv.data;
>  	ret = skl_tplg_get_desc_blocks(dev, array);
> diff --git a/sound/soc/intel/skylake/skl-tplg-interface.h b/sound/soc/intel/skylake/skl-tplg-interface.h
> index f8d1749a2e0c..b0e3d376594c 100644
> --- a/sound/soc/intel/skylake/skl-tplg-interface.h
> +++ b/sound/soc/intel/skylake/skl-tplg-interface.h
> @@ -169,4 +169,78 @@ enum skl_tuple_type {
>  	SKL_TYPE_DATA
>  };
>  
> +/* v4 configuration data */
> +
> +struct skl_dfw_v4_module_pin {
> +	u16 module_id;
> +	u16 instance_id;
> +} __packed;
> +
> +struct skl_dfw_v4_module_fmt {
> +	u32 channels;
> +	u32 freq;
> +	u32 bit_depth;
> +	u32 valid_bit_depth;
> +	u32 ch_cfg;
> +	u32 interleaving_style;
> +	u32 sample_type;
> +	u32 ch_map;
> +} __packed;
> +
> +struct skl_dfw_v4_module_caps {
> +	u32 set_params:2;
> +	u32 rsvd:30;
> +	u32 param_id;
> +	u32 caps_size;
> +	u32 caps[HDA_SST_CFG_MAX];
> +} __packed;
> +
> +struct skl_dfw_v4_pipe {
> +	u8 pipe_id;
> +	u8 pipe_priority;
> +	u16 conn_type:4;
> +	u16 rsvd:4;
> +	u16 memory_pages:8;
> +} __packed;
> +
> +struct skl_dfw_v4_module {
> +	char uuid[SKL_UUID_STR_SZ];
> +
> +	u16 module_id;
> +	u16 instance_id;
> +	u32 max_mcps;
> +	u32 mem_pages;
> +	u32 obs;
> +	u32 ibs;
> +	u32 vbus_id;
> +
> +	u32 max_in_queue:8;
> +	u32 max_out_queue:8;
> +	u32 time_slot:8;
> +	u32 core_id:4;
> +	u32 rsvd1:4;
> +
> +	u32 module_type:8;
> +	u32 conn_type:4;
> +	u32 dev_type:4;
> +	u32 hw_conn_type:4;
> +	u32 rsvd2:12;
> +
> +	u32 params_fixup:8;
> +	u32 converter:8;
> +	u32 input_pin_type:1;
> +	u32 output_pin_type:1;
> +	u32 is_dynamic_in_pin:1;
> +	u32 is_dynamic_out_pin:1;
> +	u32 is_loadable:1;
> +	u32 rsvd3:11;
> +
> +	struct skl_dfw_v4_pipe pipe;
> +	struct skl_dfw_v4_module_fmt in_fmt[MAX_IN_QUEUE];
> +	struct skl_dfw_v4_module_fmt out_fmt[MAX_OUT_QUEUE];
> +	struct skl_dfw_v4_module_pin in_pin[MAX_IN_QUEUE];
> +	struct skl_dfw_v4_module_pin out_pin[MAX_OUT_QUEUE];
> +	struct skl_dfw_v4_module_caps caps;
> +} __packed;
> +
>  #endif
> diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
> index 986b8b2f90fb..d66b2e5ccd67 100644
> --- a/sound/soc/soc-topology.c
> +++ b/sound/soc/soc-topology.c
> @@ -2293,8 +2293,11 @@ static int manifest_new_ver(struct soc_tplg *tplg,
>  	*manifest = NULL;
>  
>  	if (src->size != sizeof(*src_v4)) {
> -		dev_err(tplg->dev, "ASoC: invalid manifest size\n");
> -		return -EINVAL;
> +		dev_warn(tplg->dev, "ASoC: invalid manifest size %d\n",
> +			 src->size);
> +		if (src->size)
> +			return -EINVAL;
> +		src->size = sizeof(*src_v4);
>  	}
>  
>  	dev_warn(tplg->dev, "ASoC: old version of manifest\n");
> -- 
> 2.17.0.441.gb46fe60e1d-goog
> 
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