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@ -3095,7 +3095,7 @@
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if (priv->hw->mode->set_16kib_bfsize)
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bfsize = priv->hw->mode->set_16kib_bfsize(dev->mtu);
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@@ -1033,235 +1234,409 @@ static int init_dma_desc_rings(struct ne
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@@ -1033,257 +1234,516 @@ static int init_dma_desc_rings(struct ne
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priv->dma_buf_sz = bfsize;
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@ -3351,17 +3351,10 @@
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- priv->tx_skbuff_dma[i].buf,
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- priv->tx_skbuff_dma[i].len,
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- DMA_TO_DEVICE);
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- }
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+ for (i = 0; i < DMA_TX_SIZE; i++)
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+ stmmac_free_tx_buffer(priv, queue, i);
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+}
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- if (priv->tx_skbuff[i]) {
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- dev_kfree_skb_any(priv->tx_skbuff[i]);
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- priv->tx_skbuff[i] = NULL;
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- priv->tx_skbuff_dma[i].buf = 0;
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- priv->tx_skbuff_dma[i].map_as_page = false;
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- }
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+
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+/**
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+ * free_dma_rx_desc_resources - free RX dma desc resources
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+ * @priv: private structure
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@ -3390,11 +3383,10 @@
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+
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+ kfree(rx_q->rx_skbuff_dma);
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+ kfree(rx_q->rx_skbuff);
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}
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}
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/**
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- * alloc_dma_desc_resources - alloc TX/RX resources.
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+ }
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+}
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+
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+/**
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+ * free_dma_tx_desc_resources - free TX dma desc resources
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+ * @priv: private structure
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+ */
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@ -3427,90 +3419,36 @@
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+
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+/**
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+ * alloc_dma_rx_desc_resources - alloc RX resources.
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* @priv: private structure
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* Description: according to which descriptor can be used (extend or basic)
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* this function allocates the resources for TX and RX paths. In case of
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* reception, for example, it pre-allocated the RX socket buffer in order to
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* allow zero-copy mechanism.
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*/
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-static int alloc_dma_desc_resources(struct stmmac_priv *priv)
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+ * @priv: private structure
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+ * Description: according to which descriptor can be used (extend or basic)
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+ * this function allocates the resources for TX and RX paths. In case of
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+ * reception, for example, it pre-allocated the RX socket buffer in order to
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+ * allow zero-copy mechanism.
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+ */
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+static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv)
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{
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+{
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+ u32 rx_count = priv->plat->rx_queues_to_use;
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int ret = -ENOMEM;
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+ int ret = -ENOMEM;
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+ u32 queue;
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- priv->rx_skbuff_dma = kmalloc_array(DMA_RX_SIZE, sizeof(dma_addr_t),
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- GFP_KERNEL);
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- if (!priv->rx_skbuff_dma)
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- return -ENOMEM;
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+
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+ /* RX queues buffers and DMA */
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+ for (queue = 0; queue < rx_count; queue++) {
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+ struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
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- priv->rx_skbuff = kmalloc_array(DMA_RX_SIZE, sizeof(struct sk_buff *),
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- GFP_KERNEL);
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- if (!priv->rx_skbuff)
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- goto err_rx_skbuff;
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-
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- priv->tx_skbuff_dma = kmalloc_array(DMA_TX_SIZE,
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- sizeof(*priv->tx_skbuff_dma),
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- GFP_KERNEL);
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- if (!priv->tx_skbuff_dma)
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- goto err_tx_skbuff_dma;
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-
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- priv->tx_skbuff = kmalloc_array(DMA_TX_SIZE, sizeof(struct sk_buff *),
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- GFP_KERNEL);
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- if (!priv->tx_skbuff)
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- goto err_tx_skbuff;
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-
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- if (priv->extend_desc) {
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- priv->dma_erx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
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- sizeof(struct
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- dma_extended_desc),
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- &priv->dma_rx_phy,
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- GFP_KERNEL);
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- if (!priv->dma_erx)
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- goto err_dma;
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+
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+ rx_q->queue_index = queue;
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+ rx_q->priv_data = priv;
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- priv->dma_etx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
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- sizeof(struct
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- dma_extended_desc),
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- &priv->dma_tx_phy,
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+
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+ rx_q->rx_skbuff_dma = kmalloc_array(DMA_RX_SIZE,
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+ sizeof(dma_addr_t),
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GFP_KERNEL);
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- if (!priv->dma_etx) {
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- dma_free_coherent(priv->device, DMA_RX_SIZE *
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- sizeof(struct dma_extended_desc),
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- priv->dma_erx, priv->dma_rx_phy);
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- goto err_dma;
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- }
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- } else {
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- priv->dma_rx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
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- sizeof(struct dma_desc),
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- &priv->dma_rx_phy,
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- GFP_KERNEL);
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- if (!priv->dma_rx)
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- goto err_dma;
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+ GFP_KERNEL);
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+ if (!rx_q->rx_skbuff_dma)
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+ return -ENOMEM;
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- priv->dma_tx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
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- sizeof(struct dma_desc),
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- &priv->dma_tx_phy,
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- GFP_KERNEL);
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- if (!priv->dma_tx) {
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- dma_free_coherent(priv->device, DMA_RX_SIZE *
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- sizeof(struct dma_desc),
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- priv->dma_rx, priv->dma_rx_phy);
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+
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+ rx_q->rx_skbuff = kmalloc_array(DMA_RX_SIZE,
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+ sizeof(struct sk_buff *),
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+ GFP_KERNEL);
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+ if (!rx_q->rx_skbuff)
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goto err_dma;
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+ goto err_dma;
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+
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+ if (priv->extend_desc) {
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+ rx_q->dma_erx = dma_zalloc_coherent(priv->device,
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@ -3531,19 +3469,12 @@
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+ GFP_KERNEL);
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+ if (!rx_q->dma_rx)
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+ goto err_dma;
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}
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}
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return 0;
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err_dma:
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- kfree(priv->tx_skbuff);
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-err_tx_skbuff:
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- kfree(priv->tx_skbuff_dma);
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-err_tx_skbuff_dma:
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- kfree(priv->rx_skbuff);
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-err_rx_skbuff:
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- kfree(priv->rx_skbuff_dma);
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+ }
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+ }
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+
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+ return 0;
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+
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+err_dma:
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+ free_dma_rx_desc_resources(priv);
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+
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+ return ret;
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@ -3600,7 +3531,7 @@
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+ GFP_KERNEL);
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+ if (!tx_q->dma_tx)
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+ goto err_dma_buffers;
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+ }
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}
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+ }
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+
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+ return 0;
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@ -3629,14 +3560,183 @@
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+
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+ ret = alloc_dma_tx_desc_resources(priv);
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+
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return ret;
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}
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+ return ret;
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+}
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+
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+/**
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+ * free_dma_desc_resources - free dma desc resources
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+ * @priv: private structure
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+ */
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static void free_dma_desc_resources(struct stmmac_priv *priv)
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+static void free_dma_desc_resources(struct stmmac_priv *priv)
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+{
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+ /* Release the DMA RX socket buffers */
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+ free_dma_rx_desc_resources(priv);
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+
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+ /* Release the DMA TX socket buffers */
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+ free_dma_tx_desc_resources(priv);
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+}
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+
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+/**
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+ * stmmac_mac_enable_rx_queues - Enable MAC rx queues
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+ * @priv: driver private structure
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+ * Description: It is used for enabling the rx queues in the MAC
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+ */
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+static void stmmac_mac_enable_rx_queues(struct stmmac_priv *priv)
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+{
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+ u32 rx_queues_count = priv->plat->rx_queues_to_use;
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+ int queue;
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+ u8 mode;
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- if (priv->tx_skbuff[i]) {
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- dev_kfree_skb_any(priv->tx_skbuff[i]);
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- priv->tx_skbuff[i] = NULL;
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- priv->tx_skbuff_dma[i].buf = 0;
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- priv->tx_skbuff_dma[i].map_as_page = false;
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- }
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+ for (queue = 0; queue < rx_queues_count; queue++) {
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+ mode = priv->plat->rx_queues_cfg[queue].mode_to_use;
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+ priv->hw->mac->rx_queue_enable(priv->hw, mode, queue);
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}
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}
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/**
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|
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- * alloc_dma_desc_resources - alloc TX/RX resources.
|
|
|
|
|
- * @priv: private structure
|
|
|
|
|
- * Description: according to which descriptor can be used (extend or basic)
|
|
|
|
|
- * this function allocates the resources for TX and RX paths. In case of
|
|
|
|
|
- * reception, for example, it pre-allocated the RX socket buffer in order to
|
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|
|
|
- * allow zero-copy mechanism.
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+ * stmmac_start_rx_dma - start RX DMA channel
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+ * @priv: driver private structure
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+ * @chan: RX channel index
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+ * Description:
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+ * This starts a RX DMA channel
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*/
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-static int alloc_dma_desc_resources(struct stmmac_priv *priv)
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+static void stmmac_start_rx_dma(struct stmmac_priv *priv, u32 chan)
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{
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- int ret = -ENOMEM;
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-
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- priv->rx_skbuff_dma = kmalloc_array(DMA_RX_SIZE, sizeof(dma_addr_t),
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- GFP_KERNEL);
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- if (!priv->rx_skbuff_dma)
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- return -ENOMEM;
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-
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- priv->rx_skbuff = kmalloc_array(DMA_RX_SIZE, sizeof(struct sk_buff *),
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- GFP_KERNEL);
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- if (!priv->rx_skbuff)
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- goto err_rx_skbuff;
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-
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- priv->tx_skbuff_dma = kmalloc_array(DMA_TX_SIZE,
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|
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- sizeof(*priv->tx_skbuff_dma),
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- GFP_KERNEL);
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- if (!priv->tx_skbuff_dma)
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- goto err_tx_skbuff_dma;
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-
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- priv->tx_skbuff = kmalloc_array(DMA_TX_SIZE, sizeof(struct sk_buff *),
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- GFP_KERNEL);
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- if (!priv->tx_skbuff)
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- goto err_tx_skbuff;
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-
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- if (priv->extend_desc) {
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- priv->dma_erx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
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- sizeof(struct
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- dma_extended_desc),
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- &priv->dma_rx_phy,
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- GFP_KERNEL);
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- if (!priv->dma_erx)
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- goto err_dma;
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-
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- priv->dma_etx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
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- sizeof(struct
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|
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- dma_extended_desc),
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|
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- &priv->dma_tx_phy,
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- GFP_KERNEL);
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|
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- if (!priv->dma_etx) {
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- dma_free_coherent(priv->device, DMA_RX_SIZE *
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- sizeof(struct dma_extended_desc),
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- priv->dma_erx, priv->dma_rx_phy);
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- goto err_dma;
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- }
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- } else {
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- priv->dma_rx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
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|
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- sizeof(struct dma_desc),
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|
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- &priv->dma_rx_phy,
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- GFP_KERNEL);
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|
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- if (!priv->dma_rx)
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|
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- goto err_dma;
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|
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+ netdev_dbg(priv->dev, "DMA RX processes started in channel %d\n", chan);
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|
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+ priv->hw->dma->start_rx(priv->ioaddr, chan);
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|
+}
|
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|
|
- priv->dma_tx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
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|
|
|
- sizeof(struct dma_desc),
|
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|
|
|
- &priv->dma_tx_phy,
|
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|
|
|
- GFP_KERNEL);
|
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|
|
|
- if (!priv->dma_tx) {
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|
|
|
- dma_free_coherent(priv->device, DMA_RX_SIZE *
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|
|
|
- sizeof(struct dma_desc),
|
|
|
|
|
- priv->dma_rx, priv->dma_rx_phy);
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|
|
- goto err_dma;
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|
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- }
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- }
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+/**
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|
|
+ * stmmac_start_tx_dma - start TX DMA channel
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * @chan: TX channel index
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This starts a TX DMA channel
|
|
|
|
|
+ */
|
|
|
|
|
+static void stmmac_start_tx_dma(struct stmmac_priv *priv, u32 chan)
|
|
|
|
|
+{
|
|
|
|
|
+ netdev_dbg(priv->dev, "DMA TX processes started in channel %d\n", chan);
|
|
|
|
|
+ priv->hw->dma->start_tx(priv->ioaddr, chan);
|
|
|
|
|
+}
|
|
|
|
|
|
|
|
|
|
- return 0;
|
|
|
|
|
+/**
|
|
|
|
|
+ * stmmac_stop_rx_dma - stop RX DMA channel
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * @chan: RX channel index
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This stops a RX DMA channel
|
|
|
|
|
+ */
|
|
|
|
|
+static void stmmac_stop_rx_dma(struct stmmac_priv *priv, u32 chan)
|
|
|
|
|
+{
|
|
|
|
|
+ netdev_dbg(priv->dev, "DMA RX processes stopped in channel %d\n", chan);
|
|
|
|
|
+ priv->hw->dma->stop_rx(priv->ioaddr, chan);
|
|
|
|
|
+}
|
|
|
|
|
|
|
|
|
|
-err_dma:
|
|
|
|
|
- kfree(priv->tx_skbuff);
|
|
|
|
|
-err_tx_skbuff:
|
|
|
|
|
- kfree(priv->tx_skbuff_dma);
|
|
|
|
|
-err_tx_skbuff_dma:
|
|
|
|
|
- kfree(priv->rx_skbuff);
|
|
|
|
|
-err_rx_skbuff:
|
|
|
|
|
- kfree(priv->rx_skbuff_dma);
|
|
|
|
|
- return ret;
|
|
|
|
|
+/**
|
|
|
|
|
+ * stmmac_stop_tx_dma - stop TX DMA channel
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * @chan: TX channel index
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This stops a TX DMA channel
|
|
|
|
|
+ */
|
|
|
|
|
+static void stmmac_stop_tx_dma(struct stmmac_priv *priv, u32 chan)
|
|
|
|
|
+{
|
|
|
|
|
+ netdev_dbg(priv->dev, "DMA TX processes stopped in channel %d\n", chan);
|
|
|
|
|
+ priv->hw->dma->stop_tx(priv->ioaddr, chan);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
-static void free_dma_desc_resources(struct stmmac_priv *priv)
|
|
|
|
|
+/**
|
|
|
|
|
+ * stmmac_start_all_dma - start all RX and TX DMA channels
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This starts all the RX and TX DMA channels
|
|
|
|
|
+ */
|
|
|
|
|
+static void stmmac_start_all_dma(struct stmmac_priv *priv)
|
|
|
|
|
{
|
|
|
|
|
- /* Release the DMA TX/RX socket buffers */
|
|
|
|
|
- dma_free_rx_skbufs(priv);
|
|
|
|
@ -3662,99 +3762,6 @@
|
|
|
|
|
- kfree(priv->rx_skbuff);
|
|
|
|
|
- kfree(priv->tx_skbuff_dma);
|
|
|
|
|
- kfree(priv->tx_skbuff);
|
|
|
|
|
+ /* Release the DMA RX socket buffers */
|
|
|
|
|
+ free_dma_rx_desc_resources(priv);
|
|
|
|
|
+
|
|
|
|
|
+ /* Release the DMA TX socket buffers */
|
|
|
|
|
+ free_dma_tx_desc_resources(priv);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
@@ -1271,19 +1646,104 @@ static void free_dma_desc_resources(stru
|
|
|
|
|
*/
|
|
|
|
|
static void stmmac_mac_enable_rx_queues(struct stmmac_priv *priv)
|
|
|
|
|
{
|
|
|
|
|
- int rx_count = priv->dma_cap.number_rx_queues;
|
|
|
|
|
- int queue = 0;
|
|
|
|
|
+ u32 rx_queues_count = priv->plat->rx_queues_to_use;
|
|
|
|
|
+ int queue;
|
|
|
|
|
+ u8 mode;
|
|
|
|
|
|
|
|
|
|
- /* If GMAC does not have multiple queues, then this is not necessary*/
|
|
|
|
|
- if (rx_count == 1)
|
|
|
|
|
- return;
|
|
|
|
|
+ for (queue = 0; queue < rx_queues_count; queue++) {
|
|
|
|
|
+ mode = priv->plat->rx_queues_cfg[queue].mode_to_use;
|
|
|
|
|
+ priv->hw->mac->rx_queue_enable(priv->hw, mode, queue);
|
|
|
|
|
+ }
|
|
|
|
|
+}
|
|
|
|
|
|
|
|
|
|
- /**
|
|
|
|
|
- * If the core is synthesized with multiple rx queues / multiple
|
|
|
|
|
- * dma channels, then rx queues will be disabled by default.
|
|
|
|
|
- * For now only rx queue 0 is enabled.
|
|
|
|
|
- */
|
|
|
|
|
- priv->hw->mac->rx_queue_enable(priv->hw, queue);
|
|
|
|
|
+/**
|
|
|
|
|
+ * stmmac_start_rx_dma - start RX DMA channel
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * @chan: RX channel index
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This starts a RX DMA channel
|
|
|
|
|
+ */
|
|
|
|
|
+static void stmmac_start_rx_dma(struct stmmac_priv *priv, u32 chan)
|
|
|
|
|
+{
|
|
|
|
|
+ netdev_dbg(priv->dev, "DMA RX processes started in channel %d\n", chan);
|
|
|
|
|
+ priv->hw->dma->start_rx(priv->ioaddr, chan);
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+/**
|
|
|
|
|
+ * stmmac_start_tx_dma - start TX DMA channel
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * @chan: TX channel index
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This starts a TX DMA channel
|
|
|
|
|
+ */
|
|
|
|
|
+static void stmmac_start_tx_dma(struct stmmac_priv *priv, u32 chan)
|
|
|
|
|
+{
|
|
|
|
|
+ netdev_dbg(priv->dev, "DMA TX processes started in channel %d\n", chan);
|
|
|
|
|
+ priv->hw->dma->start_tx(priv->ioaddr, chan);
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+/**
|
|
|
|
|
+ * stmmac_stop_rx_dma - stop RX DMA channel
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * @chan: RX channel index
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This stops a RX DMA channel
|
|
|
|
|
+ */
|
|
|
|
|
+static void stmmac_stop_rx_dma(struct stmmac_priv *priv, u32 chan)
|
|
|
|
|
+{
|
|
|
|
|
+ netdev_dbg(priv->dev, "DMA RX processes stopped in channel %d\n", chan);
|
|
|
|
|
+ priv->hw->dma->stop_rx(priv->ioaddr, chan);
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+/**
|
|
|
|
|
+ * stmmac_stop_tx_dma - stop TX DMA channel
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * @chan: TX channel index
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This stops a TX DMA channel
|
|
|
|
|
+ */
|
|
|
|
|
+static void stmmac_stop_tx_dma(struct stmmac_priv *priv, u32 chan)
|
|
|
|
|
+{
|
|
|
|
|
+ netdev_dbg(priv->dev, "DMA TX processes stopped in channel %d\n", chan);
|
|
|
|
|
+ priv->hw->dma->stop_tx(priv->ioaddr, chan);
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+/**
|
|
|
|
|
+ * stmmac_start_all_dma - start all RX and TX DMA channels
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This starts all the RX and TX DMA channels
|
|
|
|
|
+ */
|
|
|
|
|
+static void stmmac_start_all_dma(struct stmmac_priv *priv)
|
|
|
|
|
+{
|
|
|
|
|
+ u32 rx_channels_count = priv->plat->rx_queues_to_use;
|
|
|
|
|
+ u32 tx_channels_count = priv->plat->tx_queues_to_use;
|
|
|
|
|
+ u32 chan = 0;
|
|
|
|
@ -3764,23 +3771,38 @@
|
|
|
|
|
+
|
|
|
|
|
+ for (chan = 0; chan < tx_channels_count; chan++)
|
|
|
|
|
+ stmmac_start_tx_dma(priv, chan);
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+/**
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
- * stmmac_mac_enable_rx_queues - Enable MAC rx queues
|
|
|
|
|
- * @priv: driver private structure
|
|
|
|
|
- * Description: It is used for enabling the rx queues in the MAC
|
|
|
|
|
+ * stmmac_stop_all_dma - stop all RX and TX DMA channels
|
|
|
|
|
+ * @priv: driver private structure
|
|
|
|
|
+ * Description:
|
|
|
|
|
+ * This stops the RX and TX DMA channels
|
|
|
|
|
+ */
|
|
|
|
|
*/
|
|
|
|
|
-static void stmmac_mac_enable_rx_queues(struct stmmac_priv *priv)
|
|
|
|
|
+static void stmmac_stop_all_dma(struct stmmac_priv *priv)
|
|
|
|
|
+{
|
|
|
|
|
{
|
|
|
|
|
- int rx_count = priv->dma_cap.number_rx_queues;
|
|
|
|
|
- int queue = 0;
|
|
|
|
|
+ u32 rx_channels_count = priv->plat->rx_queues_to_use;
|
|
|
|
|
+ u32 tx_channels_count = priv->plat->tx_queues_to_use;
|
|
|
|
|
+ u32 chan = 0;
|
|
|
|
|
+
|
|
|
|
|
|
|
|
|
|
- /* If GMAC does not have multiple queues, then this is not necessary*/
|
|
|
|
|
- if (rx_count == 1)
|
|
|
|
|
- return;
|
|
|
|
|
+ for (chan = 0; chan < rx_channels_count; chan++)
|
|
|
|
|
+ stmmac_stop_rx_dma(priv, chan);
|
|
|
|
|
+
|
|
|
|
|
|
|
|
|
|
- /**
|
|
|
|
|
- * If the core is synthesized with multiple rx queues / multiple
|
|
|
|
|
- * dma channels, then rx queues will be disabled by default.
|
|
|
|
|
- * For now only rx queue 0 is enabled.
|
|
|
|
|
- */
|
|
|
|
|
- priv->hw->mac->rx_queue_enable(priv->hw, queue);
|
|
|
|
|
+ for (chan = 0; chan < tx_channels_count; chan++)
|
|
|
|
|
+ stmmac_stop_tx_dma(priv, chan);
|
|
|
|
|
}
|
|
|
|
|