rtl818x_pci: switch from 'pci_' to 'dma_' API
The wrappers in include/linux/pci-dma-compat.h should go away. The patch has been generated with the coccinelle script below and has been hand modified to replace GFP_ with a correct flag. It has been compile tested. When memory is allocated in 'rtl8180_init_rx_ring()' and 'rtl8180_init_tx_ring()' GFP_KERNEL can be used because both functions are called from 'rtl8180_start()', which is a .start function (see struct ieee80211_ops) .start function can sleep, as explicitly stated in include/net/mac80211.h. @@ @@ - PCI_DMA_BIDIRECTIONAL + DMA_BIDIRECTIONAL @@ @@ - PCI_DMA_TODEVICE + DMA_TO_DEVICE @@ @@ - PCI_DMA_FROMDEVICE + DMA_FROM_DEVICE @@ @@ - PCI_DMA_NONE + DMA_NONE @@ expression e1, e2, e3; @@ - pci_alloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3; @@ - pci_zalloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3, e4; @@ - pci_free_consistent(e1, e2, e3, e4) + dma_free_coherent(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_single(e1, e2, e3, e4) + dma_map_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_single(e1, e2, e3, e4) + dma_unmap_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4, e5; @@ - pci_map_page(e1, e2, e3, e4, e5) + dma_map_page(&e1->dev, e2, e3, e4, e5) @@ expression e1, e2, e3, e4; @@ - pci_unmap_page(e1, e2, e3, e4) + dma_unmap_page(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_sg(e1, e2, e3, e4) + dma_map_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_sg(e1, e2, e3, e4) + dma_unmap_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_cpu(e1, e2, e3, e4) + dma_sync_single_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_device(e1, e2, e3, e4) + dma_sync_single_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_cpu(e1, e2, e3, e4) + dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_device(e1, e2, e3, e4) + dma_sync_sg_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2; @@ - pci_dma_mapping_error(e1, e2) + dma_mapping_error(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_dma_mask(e1, e2) + dma_set_mask(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_consistent_dma_mask(e1, e2) + dma_set_coherent_mask(&e1->dev, e2) Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20200819210852.120826-1-christophe.jaillet@wanadoo.fr
This commit is contained in:
Christophe JAILLET
Kalle Valo
parent
478762855b
commit
f4ce4bf668
@ -260,20 +260,20 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
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if (unlikely(!new_skb))
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goto done;
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mapping = pci_map_single(priv->pdev,
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skb_tail_pointer(new_skb),
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MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
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mapping = dma_map_single(&priv->pdev->dev,
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skb_tail_pointer(new_skb),
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MAX_RX_SIZE, DMA_FROM_DEVICE);
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if (pci_dma_mapping_error(priv->pdev, mapping)) {
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if (dma_mapping_error(&priv->pdev->dev, mapping)) {
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kfree_skb(new_skb);
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dev_err(&priv->pdev->dev, "RX DMA map error\n");
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goto done;
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}
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pci_unmap_single(priv->pdev,
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dma_unmap_single(&priv->pdev->dev,
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*((dma_addr_t *)skb->cb),
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MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
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MAX_RX_SIZE, DMA_FROM_DEVICE);
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skb_put(skb, flags & 0xFFF);
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rx_status.antenna = (flags2 >> 15) & 1;
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@ -355,8 +355,8 @@ static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
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ring->idx = (ring->idx + 1) % ring->entries;
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skb = __skb_dequeue(&ring->queue);
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pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
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skb->len, PCI_DMA_TODEVICE);
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dma_unmap_single(&priv->pdev->dev, le32_to_cpu(entry->tx_buf),
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skb->len, DMA_TO_DEVICE);
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info = IEEE80211_SKB_CB(skb);
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ieee80211_tx_info_clear_status(info);
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@ -473,10 +473,10 @@ static void rtl8180_tx(struct ieee80211_hw *dev,
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prio = skb_get_queue_mapping(skb);
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ring = &priv->tx_ring[prio];
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mapping = pci_map_single(priv->pdev, skb->data,
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skb->len, PCI_DMA_TODEVICE);
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mapping = dma_map_single(&priv->pdev->dev, skb->data, skb->len,
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DMA_TO_DEVICE);
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if (pci_dma_mapping_error(priv->pdev, mapping)) {
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if (dma_mapping_error(&priv->pdev->dev, mapping)) {
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kfree_skb(skb);
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dev_err(&priv->pdev->dev, "TX DMA mapping error\n");
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return;
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@ -1004,8 +1004,9 @@ static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
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else
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priv->rx_ring_sz = sizeof(struct rtl8180_rx_desc);
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priv->rx_ring = pci_zalloc_consistent(priv->pdev, priv->rx_ring_sz * 32,
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&priv->rx_ring_dma);
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priv->rx_ring = dma_alloc_coherent(&priv->pdev->dev,
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priv->rx_ring_sz * 32,
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&priv->rx_ring_dma, GFP_KERNEL);
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if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
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wiphy_err(dev->wiphy, "Cannot allocate RX ring\n");
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return -ENOMEM;
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@ -1018,20 +1019,23 @@ static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
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dma_addr_t *mapping;
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entry = priv->rx_ring + priv->rx_ring_sz*i;
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if (!skb) {
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pci_free_consistent(priv->pdev, priv->rx_ring_sz * 32,
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priv->rx_ring, priv->rx_ring_dma);
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dma_free_coherent(&priv->pdev->dev,
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priv->rx_ring_sz * 32,
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priv->rx_ring, priv->rx_ring_dma);
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wiphy_err(dev->wiphy, "Cannot allocate RX skb\n");
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return -ENOMEM;
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}
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priv->rx_buf[i] = skb;
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mapping = (dma_addr_t *)skb->cb;
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*mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb),
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MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
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*mapping = dma_map_single(&priv->pdev->dev,
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skb_tail_pointer(skb), MAX_RX_SIZE,
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DMA_FROM_DEVICE);
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if (pci_dma_mapping_error(priv->pdev, *mapping)) {
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if (dma_mapping_error(&priv->pdev->dev, *mapping)) {
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kfree_skb(skb);
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pci_free_consistent(priv->pdev, priv->rx_ring_sz * 32,
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priv->rx_ring, priv->rx_ring_dma);
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dma_free_coherent(&priv->pdev->dev,
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priv->rx_ring_sz * 32,
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priv->rx_ring, priv->rx_ring_dma);
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wiphy_err(dev->wiphy, "Cannot map DMA for RX skb\n");
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return -ENOMEM;
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}
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@ -1054,14 +1058,13 @@ static void rtl8180_free_rx_ring(struct ieee80211_hw *dev)
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if (!skb)
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continue;
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pci_unmap_single(priv->pdev,
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*((dma_addr_t *)skb->cb),
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MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
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dma_unmap_single(&priv->pdev->dev, *((dma_addr_t *)skb->cb),
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MAX_RX_SIZE, DMA_FROM_DEVICE);
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kfree_skb(skb);
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}
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pci_free_consistent(priv->pdev, priv->rx_ring_sz * 32,
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priv->rx_ring, priv->rx_ring_dma);
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dma_free_coherent(&priv->pdev->dev, priv->rx_ring_sz * 32,
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priv->rx_ring, priv->rx_ring_dma);
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priv->rx_ring = NULL;
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}
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@ -1073,8 +1076,8 @@ static int rtl8180_init_tx_ring(struct ieee80211_hw *dev,
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dma_addr_t dma;
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int i;
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ring = pci_zalloc_consistent(priv->pdev, sizeof(*ring) * entries,
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&dma);
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ring = dma_alloc_coherent(&priv->pdev->dev, sizeof(*ring) * entries,
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&dma, GFP_KERNEL);
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if (!ring || (unsigned long)ring & 0xFF) {
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wiphy_err(dev->wiphy, "Cannot allocate TX ring (prio = %d)\n",
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prio);
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@ -1103,14 +1106,15 @@ static void rtl8180_free_tx_ring(struct ieee80211_hw *dev, unsigned int prio)
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struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
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struct sk_buff *skb = __skb_dequeue(&ring->queue);
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pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
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skb->len, PCI_DMA_TODEVICE);
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dma_unmap_single(&priv->pdev->dev, le32_to_cpu(entry->tx_buf),
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skb->len, DMA_TO_DEVICE);
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kfree_skb(skb);
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ring->idx = (ring->idx + 1) % ring->entries;
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}
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pci_free_consistent(priv->pdev, sizeof(*ring->desc)*ring->entries,
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ring->desc, ring->dma);
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dma_free_coherent(&priv->pdev->dev,
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sizeof(*ring->desc) * ring->entries, ring->desc,
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ring->dma);
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ring->desc = NULL;
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}
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@ -1754,8 +1758,8 @@ static int rtl8180_probe(struct pci_dev *pdev,
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goto err_free_reg;
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}
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if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) ||
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(err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))) {
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if ((err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) ||
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(err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)))) {
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printk(KERN_ERR "%s (rtl8180): No suitable DMA available\n",
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pci_name(pdev));
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goto err_free_reg;
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