[PATCH] ksz884x: switch from 'pci_' to 'dma_' API
From: Christophe JAILLET
Date: Tue Jul 14 2020 - 14:35:36 EST
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 'ksz_alloc_desc()', GFP_KERNEL can be used
because a few lines below, GFP_KERNEL is also used in the
'ksz_alloc_soft_desc()' calls.
@@
@@
- 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@xxxxxxxxxx>
---
If needed, see post from Christoph Hellwig on the kernel-janitors ML:
https://marc.info/?l=kernel-janitors&m=158745678307186&w=4
---
drivers/net/ethernet/micrel/ksz884x.c | 68 ++++++++++++---------------
1 file changed, 30 insertions(+), 38 deletions(-)
diff --git a/drivers/net/ethernet/micrel/ksz884x.c b/drivers/net/ethernet/micrel/ksz884x.c
index 2ce7304d3753..bb646b65cc95 100644
--- a/drivers/net/ethernet/micrel/ksz884x.c
+++ b/drivers/net/ethernet/micrel/ksz884x.c
@@ -4390,9 +4390,9 @@ static int ksz_alloc_desc(struct dev_info *adapter)
DESC_ALIGNMENT;
adapter->desc_pool.alloc_virt =
- pci_zalloc_consistent(adapter->pdev,
- adapter->desc_pool.alloc_size,
- &adapter->desc_pool.dma_addr);
+ dma_alloc_coherent(&adapter->pdev->dev,
+ adapter->desc_pool.alloc_size,
+ &adapter->desc_pool.dma_addr, GFP_KERNEL);
if (adapter->desc_pool.alloc_virt == NULL) {
adapter->desc_pool.alloc_size = 0;
return 1;
@@ -4431,7 +4431,8 @@ static int ksz_alloc_desc(struct dev_info *adapter)
static void free_dma_buf(struct dev_info *adapter, struct ksz_dma_buf *dma_buf,
int direction)
{
- pci_unmap_single(adapter->pdev, dma_buf->dma, dma_buf->len, direction);
+ dma_unmap_single(&adapter->pdev->dev, dma_buf->dma, dma_buf->len,
+ direction);
dev_kfree_skb(dma_buf->skb);
dma_buf->skb = NULL;
dma_buf->dma = 0;
@@ -4456,16 +4457,15 @@ static void ksz_init_rx_buffers(struct dev_info *adapter)
dma_buf = DMA_BUFFER(desc);
if (dma_buf->skb && dma_buf->len != adapter->mtu)
- free_dma_buf(adapter, dma_buf, PCI_DMA_FROMDEVICE);
+ free_dma_buf(adapter, dma_buf, DMA_FROM_DEVICE);
dma_buf->len = adapter->mtu;
if (!dma_buf->skb)
dma_buf->skb = alloc_skb(dma_buf->len, GFP_ATOMIC);
if (dma_buf->skb && !dma_buf->dma)
- dma_buf->dma = pci_map_single(
- adapter->pdev,
- skb_tail_pointer(dma_buf->skb),
- dma_buf->len,
- PCI_DMA_FROMDEVICE);
+ dma_buf->dma = dma_map_single(&adapter->pdev->dev,
+ skb_tail_pointer(dma_buf->skb),
+ dma_buf->len,
+ DMA_FROM_DEVICE);
/* Set descriptor. */
set_rx_buf(desc, dma_buf->dma);
@@ -4543,11 +4543,10 @@ static void ksz_free_desc(struct dev_info *adapter)
/* Free memory. */
if (adapter->desc_pool.alloc_virt)
- pci_free_consistent(
- adapter->pdev,
- adapter->desc_pool.alloc_size,
- adapter->desc_pool.alloc_virt,
- adapter->desc_pool.dma_addr);
+ dma_free_coherent(&adapter->pdev->dev,
+ adapter->desc_pool.alloc_size,
+ adapter->desc_pool.alloc_virt,
+ adapter->desc_pool.dma_addr);
/* Reset resource pool. */
adapter->desc_pool.alloc_size = 0;
@@ -4590,12 +4589,10 @@ static void ksz_free_buffers(struct dev_info *adapter,
static void ksz_free_mem(struct dev_info *adapter)
{
/* Free transmit buffers. */
- ksz_free_buffers(adapter, &adapter->hw.tx_desc_info,
- PCI_DMA_TODEVICE);
+ ksz_free_buffers(adapter, &adapter->hw.tx_desc_info, DMA_TO_DEVICE);
/* Free receive buffers. */
- ksz_free_buffers(adapter, &adapter->hw.rx_desc_info,
- PCI_DMA_FROMDEVICE);
+ ksz_free_buffers(adapter, &adapter->hw.rx_desc_info, DMA_FROM_DEVICE);
/* Free descriptors. */
ksz_free_desc(adapter);
@@ -4657,9 +4654,8 @@ static void send_packet(struct sk_buff *skb, struct net_device *dev)
dma_buf->len = skb_headlen(skb);
- dma_buf->dma = pci_map_single(
- hw_priv->pdev, skb->data, dma_buf->len,
- PCI_DMA_TODEVICE);
+ dma_buf->dma = dma_map_single(&hw_priv->pdev->dev, skb->data,
+ dma_buf->len, DMA_TO_DEVICE);
set_tx_buf(desc, dma_buf->dma);
set_tx_len(desc, dma_buf->len);
@@ -4676,11 +4672,10 @@ static void send_packet(struct sk_buff *skb, struct net_device *dev)
dma_buf = DMA_BUFFER(desc);
dma_buf->len = skb_frag_size(this_frag);
- dma_buf->dma = pci_map_single(
- hw_priv->pdev,
- skb_frag_address(this_frag),
- dma_buf->len,
- PCI_DMA_TODEVICE);
+ dma_buf->dma = dma_map_single(&hw_priv->pdev->dev,
+ skb_frag_address(this_frag),
+ dma_buf->len,
+ DMA_TO_DEVICE);
set_tx_buf(desc, dma_buf->dma);
set_tx_len(desc, dma_buf->len);
@@ -4700,9 +4695,8 @@ static void send_packet(struct sk_buff *skb, struct net_device *dev)
} else {
dma_buf->len = len;
- dma_buf->dma = pci_map_single(
- hw_priv->pdev, skb->data, dma_buf->len,
- PCI_DMA_TODEVICE);
+ dma_buf->dma = dma_map_single(&hw_priv->pdev->dev, skb->data,
+ dma_buf->len, DMA_TO_DEVICE);
set_tx_buf(desc, dma_buf->dma);
set_tx_len(desc, dma_buf->len);
}
@@ -4756,9 +4750,8 @@ static void transmit_cleanup(struct dev_info *hw_priv, int normal)
}
dma_buf = DMA_BUFFER(desc);
- pci_unmap_single(
- hw_priv->pdev, dma_buf->dma, dma_buf->len,
- PCI_DMA_TODEVICE);
+ dma_unmap_single(&hw_priv->pdev->dev, dma_buf->dma,
+ dma_buf->len, DMA_TO_DEVICE);
/* This descriptor contains the last buffer in the packet. */
if (dma_buf->skb) {
@@ -4991,9 +4984,8 @@ static inline int rx_proc(struct net_device *dev, struct ksz_hw* hw,
packet_len = status.rx.frame_len - 4;
dma_buf = DMA_BUFFER(desc);
- pci_dma_sync_single_for_cpu(
- hw_priv->pdev, dma_buf->dma, packet_len + 4,
- PCI_DMA_FROMDEVICE);
+ dma_sync_single_for_cpu(&hw_priv->pdev->dev, dma_buf->dma,
+ packet_len + 4, DMA_FROM_DEVICE);
do {
/* skb->data != skb->head */
@@ -6935,8 +6927,8 @@ static int pcidev_init(struct pci_dev *pdev, const struct pci_device_id *id)
result = -ENODEV;
- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
- pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
+ if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)) ||
+ dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)))
return result;
reg_base = pci_resource_start(pdev, 0);
--
2.25.1