Preparatory patches for NXP platforms transition to Zephyr native drivers

src/audio/dai-zephyr.c

@@ -161,6 +161,10 @@ int dai_set_config(struct dai *dai, struct ipc_config_dai *common_config,
 		cfg.type = is_blob ? DAI_INTEL_HDA_NHLT : DAI_INTEL_HDA;
 		cfg_params = is_blob ? spec_config : &sof_cfg->hda;
 		break;
+	case SOF_DAI_IMX_SAI:
+		cfg.type = DAI_IMX_SAI;
+		cfg_params = &sof_cfg->sai;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -565,6 +569,37 @@ static int dai_verify_params(struct dai_data *dd, struct comp_dev *dev,
 	return 0;
 }
 
+static int dai_get_dma_slot(struct dai_data *dd, struct comp_dev *dev, uint32_t *slot)
+{
+	struct dai_config cfg;
+	int ret;
+	int hs;
+
+	ret = dai_config_get(dd->dai->dev, &cfg, dev->direction);
+	if (ret < 0) {
+		comp_err(dev, "failed to fetch DAI configuration");
+		return ret;
+	}
+
+	hs = dai_get_handshake(dd->dai, dev->direction, dd->stream_id);
+	if (ret < 0) {
+		comp_err(dev, "failed to fetch DAI handshake");
+		return ret;
+	}
+
+	switch (cfg.type) {
+	case DAI_IMX_SAI:
+	case DAI_IMX_ESAI:
+		*slot = (hs & GENMASK(15, 8)) >> 8;
+		break;
+	default:
+		*slot = hs;
+		break;
+	}
+
+	return 0;
+}
+
 static int dai_set_sg_config(struct dai_data *dd, struct comp_dev *dev, uint32_t period_bytes,
 			     uint32_t period_count)
 {
@@ -578,11 +613,15 @@ static int dai_set_sg_config(struct dai_data *dd, struct comp_dev *dev, uint32_t
 	if (dev->direction == SOF_IPC_STREAM_PLAYBACK) {
 		dd->process = pcm_get_conversion_function(local_fmt, dma_fmt);
 		config->direction = DMA_DIR_MEM_TO_DEV;
-		config->dest_dev = dai_get_handshake(dd->dai, dev->direction, dd->stream_id);
+		err = dai_get_dma_slot(dd, dev, &config->dest_dev);
+		if (err < 0)
+			return err;
 	} else {
 		dd->process = pcm_get_conversion_function(dma_fmt, local_fmt);
 		config->direction = DMA_DIR_DEV_TO_MEM;
-		config->src_dev = dai_get_handshake(dd->dai, dev->direction, dd->stream_id);
+		err = dai_get_dma_slot(dd, dev, &config->src_dev);
+		if (err < 0)
+			return err;
 	}
 
 	if (!dd->process) {
@@ -714,6 +753,13 @@ static int dai_set_dma_config(struct dai_data *dd, struct comp_dev *dev)
 		dma_block_cfg->block_size = config->elem_array.elems[i].size;
 		dma_block_cfg->source_address = config->elem_array.elems[i].src;
 		dma_block_cfg->dest_address = config->elem_array.elems[i].dest;
+		if (dev->direction == SOF_IPC_STREAM_PLAYBACK) {
+			dma_block_cfg->source_addr_adj = DMA_ADDR_ADJ_DECREMENT;
+			dma_block_cfg->dest_addr_adj = DMA_ADDR_ADJ_INCREMENT;
+		} else {
+			dma_block_cfg->source_addr_adj = DMA_ADDR_ADJ_INCREMENT;
+			dma_block_cfg->dest_addr_adj = DMA_ADDR_ADJ_DECREMENT;
+		}
 		prev = dma_block_cfg;
 		prev->next_block = ++dma_block_cfg;
 	}
@@ -1042,6 +1088,11 @@ static int dai_comp_trigger_internal(struct dai_data *dd, struct comp_dev *dev,
 
 	comp_dbg(dev, "dai_comp_trigger_internal(), command = %u", cmd);
 
+#ifdef CONFIG_IPC_MAJOR_3
+	if (dev->state == comp_get_requested_state(cmd))
+		return PPL_STATUS_PATH_STOP;
+#endif /* CONFIG_IPC_MAJOR_3 */
+
 	switch (cmd) {
 	case COMP_TRIGGER_START:
 		comp_dbg(dev, "dai_comp_trigger_internal(), START");
@@ -1140,6 +1191,17 @@ static int dai_comp_trigger_internal(struct dai_data *dd, struct comp_dev *dev,
 		break;
 	}
 
+#ifdef CONFIG_IPC_MAJOR_3
+	/* TODO: investigate why making this IPC version-agnostic
+	 * breaks some Intel tests and check if doing so would be
+	 * possible (or even make sense) on Intel platforms.
+	 *
+	 * See issue #8920 for details.
+	 */
+	if (!ret)
+		return comp_set_state(dev, cmd);
+#endif /* CONFIG_IPC_MAJOR_3 */
+
 	return ret;
 }
 

src/audio/host-zephyr.c

@@ -203,6 +203,7 @@ static uint32_t host_get_copy_bytes_one_shot(struct host_data *hd)
 static int host_copy_one_shot(struct host_data *hd, struct comp_dev *dev, copy_callback_t cb)
 {
 	uint32_t copy_bytes;
+	struct dma_sg_elem *local_elem = hd->config.elem_array.elems;
 	int ret = 0;
 
 	comp_dbg(dev, "host_copy_one_shot()");
@@ -213,6 +214,13 @@ static int host_copy_one_shot(struct host_data *hd, struct comp_dev *dev, copy_c
 		return ret;
 	}
 
+	/* SRC/DEST addresses have changed so the DMAC needs
+	 * to be re-configured.
+	 */
+	hd->z_config.head_block->source_address = local_elem->src;
+	hd->z_config.head_block->dest_address = local_elem->dest;
+	hd->z_config.head_block->block_size = local_elem->size;
+
 	/* reconfigure transfer */
 	ret = dma_config(hd->chan->dma->z_dev, hd->chan->index, &hd->z_config);
 	if (ret < 0) {
@@ -927,10 +935,12 @@ int host_common_params(struct host_data *hd, struct comp_dev *dev,
 	case DMA_DIR_LMEM_TO_HMEM:
 		dma_cfg->channel_direction = MEMORY_TO_HOST;
 		dma_block_cfg->source_address = buffer_addr;
+		dma_block_cfg->dest_address = hd->config.elem_array.elems[0].dest;
 		break;
 	case DMA_DIR_HMEM_TO_LMEM:
 		dma_cfg->channel_direction = HOST_TO_MEMORY;
 		dma_block_cfg->dest_address = buffer_addr;
+		dma_block_cfg->source_address = hd->config.elem_array.elems[0].src;
 		break;
 	}
 

src/ipc/ipc3/dai.c

@@ -63,7 +63,12 @@ int dai_config_dma_channel(struct dai_data *dd, struct comp_dev *dev, const void
 	case SOF_DAI_IMX_ESAI:
 		handshake = dai_get_handshake(dd->dai, dai->direction,
 					      dd->stream_id);
+/* TODO: remove this when transition to native drivers is complete on all NXP platforms */
+#ifndef CONFIG_ZEPHYR_NATIVE_DRIVERS
 		channel = EDMA_HS_GET_CHAN(handshake);
+#else
+		channel = handshake & GENMASK(7, 0);
+#endif /* CONFIG_ZEPHYR_NATIVE_DRIVERS */
 		break;
 	case SOF_DAI_IMX_MICFIL:
 		channel = dai_get_handshake(dd->dai, dai->direction,

src/ipc/ipc3/host-page-table.c

@@ -81,9 +81,70 @@ static int ipc_parse_page_descriptors(uint8_t *page_table,
 	return 0;
 }
 
+#ifdef CONFIG_ZEPHYR_NATIVE_DRIVERS
 /*
  * Copy the audio buffer page tables from the host to the DSP max of 4K.
  */
+static int ipc_get_page_descriptors(struct dma *dmac, uint8_t *page_table,
+				    struct sof_ipc_host_buffer *ring)
+{
+	struct dma_config cfg;
+	struct dma_block_config blk;
+	int channel, ret;
+	uint32_t align;
+
+	/* TODO: ATM, all of this is somewhat NXP-specific as the
+	 * DMA driver used by NXP performs the transfer via the
+	 * reload() function which may not be the case for all
+	 * vendors.
+	 */
+	if (!IS_ENABLED(CONFIG_DMA_NXP_SOF_HOST_DMA)) {
+		tr_err(&ipc_tr, "DMAC not supported for page transfer");
+		return -ENOTSUP;
+	}
+
+	channel = dma_request_channel(dmac->z_dev, 0);
+	if (channel < 0) {
+		tr_err(&ipc_tr, "failed to request channel");
+		return channel;
+	}
+
+	/* fetch copy alignment */
+	ret = dma_get_attribute(dmac->z_dev, DMA_ATTR_COPY_ALIGNMENT, &align);
+	if (ret < 0) {
+		tr_err(&ipc_tr, "failed to fetch copy alignment");
+		goto out_release_channel;
+	}
+
+	/* prepare DMA configuration */
+	cfg.source_data_size = sizeof(uint32_t);
+	cfg.dest_data_size = sizeof(uint32_t);
+	cfg.block_count = 1;
+	cfg.head_block = &blk;
+	cfg.channel_direction = HOST_TO_MEMORY;
+
+	blk.source_address = POINTER_TO_UINT(host_to_local(ring->phy_addr));
+	blk.dest_address = POINTER_TO_UINT(page_table);
+	blk.block_size = ALIGN_UP(SOF_DIV_ROUND_UP(ring->pages * 20, 8), align);
+
+	/* commit configuration */
+	ret = dma_config(dmac->z_dev, channel, &cfg);
+	if (ret < 0) {
+		tr_err(&ipc_tr, "failed to commit configuration");
+		goto out_release_channel;
+	}
+
+	/* do transfer */
+	ret = dma_reload(dmac->z_dev, channel, 0, 0, 0);
+	if (ret < 0)
+		tr_err(&ipc_tr, "failed to perform transfer");
+
+out_release_channel:
+	dma_release_channel(dmac->z_dev, channel);
+
+	return ret;
+}
+#else
 static int ipc_get_page_descriptors(struct dma *dmac, uint8_t *page_table,
 				    struct sof_ipc_host_buffer *ring)
 {
@@ -115,11 +176,7 @@ static int ipc_get_page_descriptors(struct dma *dmac, uint8_t *page_table,
 
 	/* source buffer size is always PAGE_SIZE bytes */
 	/* 20 bits for each page, round up to minimum DMA copy size */
-#if CONFIG_ZEPHYR_NATIVE_DRIVERS
-	ret = dma_get_attribute(dmac->z_dev, DMA_ATTR_COPY_ALIGNMENT, &dma_copy_align);
-#else
 	ret = dma_get_attribute_legacy(dmac, DMA_ATTR_COPY_ALIGNMENT, &dma_copy_align);
-#endif
 	if (ret < 0) {
 		tr_err(&ipc_tr, "ipc_get_page_descriptors(): dma_get_attribute() failed");
 		goto out;
@@ -147,6 +204,7 @@ static int ipc_get_page_descriptors(struct dma *dmac, uint8_t *page_table,
 	dma_channel_put_legacy(chan);
 	return ret;
 }
+#endif /* CONFIG_ZEPHYR_NATIVE_DRIVERS */
 
 int ipc_process_host_buffer(struct ipc *ipc,
 			    struct sof_ipc_host_buffer *ring,

src/lib/dai.c

@@ -145,6 +145,9 @@ const struct device *zephyr_dev[] = {
 #if CONFIG_DAI_INTEL_HDA
 	DT_FOREACH_STATUS_OKAY(intel_hda_dai, GET_DEVICE_LIST)
 #endif
+#if CONFIG_DAI_NXP_SAI
+	DT_FOREACH_STATUS_OKAY(nxp_dai_sai, GET_DEVICE_LIST)
+#endif
 };
 
 static const struct device *dai_get_zephyr_device(uint32_t type, uint32_t index)

zephyr/lib/dma.c

@@ -107,6 +107,29 @@ SHARED_DATA struct dma dma[] = {
 	.z_dev		= DEVICE_DT_GET(DT_NODELABEL(hda_link_out)),
 },
 #endif
+#ifdef CONFIG_SOC_SERIES_MIMX9_A55
+{
+	.plat_data = {
+		.dir = DMA_DIR_MEM_TO_DEV | DMA_DIR_DEV_TO_MEM,
+		.devs = DMA_DEV_SAI,
+		/* TODO: might be worth using `dma-channels` here
+		 * (needs to become a mandatory property)
+		 */
+		.channels = 64,
+		.period_count = 2,
+	},
+	.z_dev = DEVICE_DT_GET(DT_NODELABEL(edma4)),
+},
+{
+	.plat_data = {
+		.dir = DMA_DIR_HMEM_TO_LMEM | DMA_DIR_LMEM_TO_HMEM,
+		.devs = DMA_DEV_HOST,
+		.channels = DT_PROP(DT_NODELABEL(host_dma), dma_channels),
+		.period_count = 2,
+	},
+	.z_dev = DEVICE_DT_GET(DT_NODELABEL(host_dma)),
+},
+#endif /* CONFIG_SOC_SERIES_MIMX9_A55 */
 };
 
 const struct dma_info lib_dma = {