WIP: Example code for downstream type conversion

ONLY COMPILE/FUZZ TESTED

Given we cannot trust our enum field in the IPC as communicator may lie
about the component on the other side and the module adapter is
obscuring the nature of many of the components we need to move the type
casting into the components directly. Here is a breakdown of the general
steps to achieve this.

1. report ipc config size for all versions
2. remove type casting in the IPC3 layer
3. on non module adapter components cast the config in a compile time
   selected shim
4. in the module adapter ipc3 layer, remove type casting again
5. in module adapter components realloc init data and cast over in a
   compile time enabled shim

Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>

src/audio/asrc/asrc.c

@@ -860,8 +860,35 @@ static int asrc_reset(struct processing_module *mod)
 	return 0;
 }
 
+#if CONFIG_IPC_MAJOR_3
+static int asrc_init_shim(struct processing_module *mod)
+{
+	struct ipc_config_asrc *ipc_asrc;
+	struct module_data *mod_data = &mod->priv;
+	const struct sof_ipc_comp_asrc *asrc =
+		(const struct sof_ipc_comp_asrc *)mod_data->cfg.init_data;
+
+	if (IPC_TAIL_IS_SIZE_INVALID(*asrc))
+		return -EBADMSG;
+
+	ipc_asrc = rballoc(0, SOF_MEM_CAPS_RAM, sizeof(*ipc_asrc));
+	if (!ipc_asrc)
+		return -ENOMEM;
+
+	ipc_asrc->source_rate = asrc->source_rate;
+	ipc_asrc->sink_rate = asrc->sink_rate;
+	ipc_asrc->asynchronous_mode = asrc->asynchronous_mode;
+	ipc_asrc->operation_mode = asrc->operation_mode;
+
+	rfree(mod_data->cfg.data);
+	mod_data->cfg.init_data = ipc_asrc;
+	mod_data->cfg.data = ipc_asrc;
+	return asrc_init(mod);
+}
+#endif
+
 static const struct module_interface asrc_interface = {
-	.init = asrc_init,
+	.init = IPC3_SHIM(asrc_init),
 	.prepare = asrc_prepare,
 	.process_audio_stream = asrc_process,
 	.trigger = asrc_trigger,

src/audio/dai-legacy.c

@@ -217,6 +217,25 @@ static struct comp_dev *dai_new(const struct comp_driver *drv,
 	return NULL;
 }
 
+#if CONFIG_IPC_MAJOR_3
+static struct comp_dev *dai_new_shim(const struct comp_driver *drv,
+				     const struct comp_ipc_config *config,
+				     const void *spec)
+{
+	const struct sof_ipc_comp_dai *comp = spec;
+	struct ipc_config_dai dai;
+
+	if (IPC_TAIL_IS_SIZE_INVALID(*comp))
+		return NULL;
+
+	dai.dai_index = comp->dai_index;
+	dai.direction = comp->direction;
+	dai.type = comp->type;
+
+	return dai_new(drv, config, &dai);
+}
+#endif
+
 void dai_common_free(struct dai_data *dd)
 {
 	if (dd->group)
@@ -1109,7 +1128,7 @@ static const struct comp_driver comp_dai = {
 	.uid	= SOF_RT_UUID(dai_uuid),
 	.tctx	= &dai_comp_tr,
 	.ops	= {
-		.create				= dai_new,
+		.create				= IPC3_SHIM(dai_new),
 		.free				= dai_free,
 		.params				= dai_params,
 		.dai_get_hw_params		= dai_comp_get_hw_params,

src/audio/dai-zephyr.c

@@ -577,6 +577,25 @@ static struct comp_dev *dai_new(const struct comp_driver *drv,
 	return NULL;
 }
 
+#if CONFIG_IPC_MAJOR_3
+static struct comp_dev *dai_new_shim(const struct comp_driver *drv,
+				     const struct comp_ipc_config *config,
+				     const void *spec)
+{
+	const struct sof_ipc_comp_dai *comp = spec;
+	struct ipc_config_dai dai;
+
+	if (IPC_TAIL_IS_SIZE_INVALID(*comp))
+		return NULL;
+
+	dai.dai_index = comp->dai_index;
+	dai.direction = comp->direction;
+	dai.type = comp->type;
+
+	return dai_new(drv, config, &dai);
+}
+#endif
+
 void dai_common_free(struct dai_data *dd)
 {
 #ifdef CONFIG_SOF_TELEMETRY_IO_PERFORMANCE_MEASUREMENTS
@@ -1919,7 +1938,7 @@ static const struct comp_driver comp_dai = {
 	.uid	= SOF_RT_UUID(dai_uuid),
 	.tctx	= &dai_comp_tr,
 	.ops	= {
-		.create				= dai_new,
+		.create				= IPC3_SHIM(dai_new),
 		.free				= dai_free,
 		.params				= dai_params,
 		.dai_get_hw_params		= dai_comp_get_hw_params,

src/audio/host-legacy.c

@@ -599,6 +599,25 @@ static struct comp_dev *host_new(const struct comp_driver *drv,
 	return NULL;
 }
 
+#if CONFIG_IPC_MAJOR_3
+static struct comp_dev *host_new_shim(const struct comp_driver *drv,
+				      const struct comp_ipc_config *config,
+				      const void *spec)
+{
+	const struct sof_ipc_comp_host *comp = spec;
+	struct ipc_config_host host;
+
+	if (IPC_TAIL_IS_SIZE_INVALID(*comp))
+		return NULL;
+
+	host.direction = comp->direction;
+	host.no_irq = comp->no_irq;
+	host.dmac_config = comp->dmac_config;
+
+	return host_new(drv, config, &host);
+}
+#endif
+
 void host_common_free(struct host_data *hd)
 {
 	dma_put(hd->dma);
@@ -1004,7 +1023,7 @@ static const struct comp_driver comp_host = {
 	.uid	= SOF_RT_UUID(host_uuid),
 	.tctx	= &host_tr,
 	.ops	= {
-		.create				= host_new,
+		.create				= IPC3_SHIM(host_new),
 		.free				= host_free,
 		.params				= host_params,
 		.reset				= host_reset,

src/audio/module_adapter/module_adapter_ipc3.c

@@ -39,65 +39,9 @@ int module_adapter_init_data(struct comp_dev *dev,
 			     const void *spec)
 {
 	int ret;
-
-	const unsigned char *data = NULL;
-	uint32_t size = 0;
-
-	switch (config->type) {
-	case SOF_COMP_VOLUME:
-	{
-		const struct ipc_config_volume *ipc_volume = spec;
-
-		size = sizeof(*ipc_volume);
-		data = spec;
-		break;
-	}
-	case SOF_COMP_SRC:
-	{
-		const struct ipc_config_src *ipc_src = spec;
-
-		size = sizeof(*ipc_src);
-		data = spec;
-		break;
-	}
-	case SOF_COMP_ASRC:
-	{
-		const struct ipc_config_asrc *ipc_asrc = spec;
-
-		size = sizeof(*ipc_asrc);
-		data = spec;
-		break;
-	}
-	case SOF_COMP_MIXER:
-		break;
-	case SOF_COMP_EQ_IIR:
-	case SOF_COMP_EQ_FIR:
-	case SOF_COMP_KEYWORD_DETECT:
-	case SOF_COMP_KPB:
-	case SOF_COMP_SELECTOR:
-	case SOF_COMP_DEMUX:
-	case SOF_COMP_MUX:
-	case SOF_COMP_DCBLOCK:
-	case SOF_COMP_SMART_AMP:
-	case SOF_COMP_MODULE_ADAPTER:
-	case SOF_COMP_FILEREAD:
-	case SOF_COMP_FILEWRITE:
-	case SOF_COMP_NONE:
-	{
-		const struct ipc_config_process *ipc_module_adapter = spec;
-
-		size = ipc_module_adapter->size;
-		data = ipc_module_adapter->data;
-		break;
-	}
-	default:
-		comp_err(dev, "module_adapter_init_data() unsupported comp type %d", config->type);
-		return -EINVAL;
-	}
-
 	/* Copy initial config */
-	if (size) {
-		ret = module_load_config(dev, data, size);
+	if (config->ipc_config_size) {
+		ret = module_load_config(dev, spec, config->ipc_config_size);
 		if (ret < 0) {
 			comp_err(dev, "module_adapter_init_data() error %d: config loading has failed.",
 				 ret);

src/audio/smart_amp/smart_amp.c

@@ -264,6 +264,20 @@ static struct comp_dev *smart_amp_new(const struct comp_driver *drv,
 	return NULL;
 }
 
+#if CONFIG_IPC_MAJOR_3
+static struct comp_dev *smart_amp_new_shim(const struct comp_driver *drv,
+					   const struct comp_ipc_config *config,
+					   const void *spec)
+{
+	struct ipc_config_process proc;
+
+	if (comp_sof_process_to_ipc_process(config->ipc_config_size, spec, &proc) < 0)
+		return NULL;
+
+	return smart_amp_new(drv, config, &proc);
+}
+#endif
+
 static int smart_amp_set_config(struct comp_dev *dev,
 				struct sof_ipc_ctrl_data *cdata)
 {
@@ -813,7 +827,7 @@ static const struct comp_driver comp_smart_amp = {
 	.uid = SOF_RT_UUID(UUID_SYM),
 	.tctx = &smart_amp_comp_tr,
 	.ops = {
-		.create = smart_amp_new,
+		.create = IPC3_SHIM(smart_amp_new),
 		.free = smart_amp_free,
 		.params = smart_amp_params,
 		.prepare = smart_amp_prepare,

src/audio/src/src.c

@@ -68,8 +68,34 @@ static int src_prepare(struct processing_module *mod,
 	return src_prepare_general(mod, sources[0], sinks[0]);
 }
 
+#if CONFIG_IPC_MAJOR_3
+static int src_init_shim(struct processing_module *mod)
+{
+	struct ipc_config_src *ipc_src;
+	struct module_data *mod_data = &mod->priv;
+	const struct sof_ipc_comp_src *src =
+		(const struct sof_ipc_comp_src *)mod_data->cfg.init_data;
+
+	if (IPC_TAIL_IS_SIZE_INVALID(*src))
+		return -EBADMSG;
+
+	ipc_src = rballoc(0, SOF_MEM_CAPS_RAM, sizeof(*ipc_src));
+	if (!ipc_src)
+		return -ENOMEM;
+
+	ipc_src->source_rate = src->source_rate;
+	ipc_src->sink_rate = src->sink_rate;
+	ipc_src->rate_mask = src->rate_mask;
+
+	rfree(mod_data->cfg.data);
+	mod_data->cfg.init_data = ipc_src;
+	mod_data->cfg.data = ipc_src;
+	return src_init(mod);
+}
+#endif
+
 static const struct module_interface src_interface = {
-	.init = src_init,
+	.init = IPC3_SHIM(src_init),
 	.prepare = src_prepare,
 	.process = src_process,
 	.is_ready_to_process = src_is_ready_to_process,

src/audio/tone.c

@@ -706,12 +706,37 @@ static int tone_reset(struct comp_dev *dev)
 	return 0;
 }
 
+#if CONFIG_IPC_MAJOR_3
+static struct comp_dev *tone_new_shim(const struct comp_driver *drv,
+				      const struct comp_ipc_config *config,
+				      const void *spec)
+{
+	const struct sof_ipc_comp_tone *comp = spec;
+	struct ipc_config_tone tone;
+
+	if (IPC_TAIL_IS_SIZE_INVALID(*comp))
+		return NULL;
+
+	tone.ampl_mult = comp->ampl_mult;
+	tone.amplitude = comp->amplitude;
+	tone.freq_mult = comp->freq_mult;
+	tone.frequency = comp->frequency;
+	tone.length = comp->length;
+	tone.period = comp->period;
+	tone.ramp_step = comp->ramp_step;
+	tone.repeats = comp->repeats;
+	tone.sample_rate = comp->sample_rate;
+
+	return tone_new(drv, config, &tone);
+}
+#endif
+
 static const struct comp_driver comp_tone = {
 	.type = SOF_COMP_TONE,
 	.uid = SOF_RT_UUID(tone_uuid),
 	.tctx = &tone_tr,
 	.ops = {
-		.create = tone_new,
+		.create = IPC3_SHIM(tone_new),
 		.free = tone_free,
 		.params = tone_params,
 #if CONFIG_IPC_MAJOR_3

src/audio/volume/volume.c

@@ -775,8 +775,36 @@ static int volume_reset(struct processing_module *mod)
 	return 0;
 }
 
+#if CONFIG_IPC_MAJOR_3
+static int volume_init_shim(struct processing_module *mod)
+{
+	struct ipc_config_volume *ipc_volume;
+	struct module_data *mod_data = &mod->priv;
+	const struct sof_ipc_comp_volume *volume =
+		(const struct sof_ipc_comp_volume *)mod_data->cfg.init_data;
+
+	if (IPC_TAIL_IS_SIZE_INVALID(*volume))
+		return -EBADMSG;
+
+	ipc_volume = rballoc(0, SOF_MEM_CAPS_RAM, sizeof(*ipc_volume));
+	if (!ipc_volume)
+		return -ENOMEM;
+
+	ipc_volume->channels = volume->channels;
+	ipc_volume->initial_ramp = volume->initial_ramp;
+	ipc_volume->max_value = volume->max_value;
+	ipc_volume->min_value = volume->min_value;
+	ipc_volume->ramp = volume->ramp;
+
+	rfree(mod_data->cfg.data);
+	mod_data->cfg.init_data = ipc_volume;
+	mod_data->cfg.data = ipc_volume;
+	return volume_init(mod);
+}
+#endif
+
 static const struct module_interface volume_interface = {
-	.init = volume_init,
+	.init = IPC3_SHIM(volume_init),
 	.prepare = volume_prepare,
 	.process_audio_stream = volume_process,
 	.set_configuration = volume_set_config,
@@ -790,7 +818,7 @@ SOF_MODULE_INIT(volume, sys_comp_module_volume_interface_init);
 
 #if CONFIG_COMP_GAIN
 static const struct module_interface gain_interface = {
-	.init = volume_init,
+	.init = IPC3_SHIM(volume_init),
 	.prepare = volume_prepare,
 	.process_audio_stream = volume_process,
 	.set_configuration = volume_set_config,

src/include/sof/audio/component.h

@@ -254,6 +254,23 @@ enum {
   #define IPC3_SHIM(init) init
 #endif
 
+/** \brief Helper to convert sof_ipc_comp_process to ipc_config_process */
+static inline int comp_sof_process_to_ipc_process(size_t size,
+						  const struct sof_ipc_comp_process *comp,
+						  struct ipc_config_process *proc)
+{
+	if (size < sizeof(*comp) + comp->size || size + comp->size > SOF_IPC_MSG_MAX_SIZE)
+		return -EBADMSG;
+	proc->type = comp->type;
+	proc->size = comp->size;
+#if CONFIG_LIBRARY || UNIT_TEST
+	proc->data = comp->data + comp->comp.ext_data_length;
+#else
+	proc->data = comp->data;
+#endif
+	return 0;
+}
+
 /** \brief Type of endpoint this component is connected to in a pipeline */
 enum comp_endpoint_type {
 	COMP_ENDPOINT_HOST,	/**< Connected to host dma */