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Date: Sun, 22 Aug 2021 17:09:48 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: doshir@...are.com, pv-drivers@...are.com, davem@...emloft.net,
kuba@...nel.org
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] vmxnet3: 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.
It has been hand modified to use 'dma_set_mask_and_coherent()' instead of
'pci_set_dma_mask()/pci_set_consistent_dma_mask()' when applicable.
This is less verbose.
The explicit 'err = -EIO;' has been removed because
'dma_set_mask_and_coherent()' returns 0 or -EIO, so its return code can be
used directly.
It has been compile tested.
@@
@@
- 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@...adoo.fr>
---
If needed, see post from Christoph Hellwig on the kernel-janitors ML:
https://marc.info/?l=kernel-janitors&m=158745678307186&w=4
---
drivers/net/vmxnet3/vmxnet3_drv.c | 47 +++++++++++++------------------
1 file changed, 20 insertions(+), 27 deletions(-)
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index e3c6b7e3bfdd..142f70670f5c 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -314,10 +314,10 @@ vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi,
{
if (tbi->map_type == VMXNET3_MAP_SINGLE)
dma_unmap_single(&pdev->dev, tbi->dma_addr, tbi->len,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
else if (tbi->map_type == VMXNET3_MAP_PAGE)
dma_unmap_page(&pdev->dev, tbi->dma_addr, tbi->len,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
else
BUG_ON(tbi->map_type != VMXNET3_MAP_NONE);
@@ -585,7 +585,7 @@ vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx,
rbi->dma_addr = dma_map_single(
&adapter->pdev->dev,
rbi->skb->data, rbi->len,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
if (dma_mapping_error(&adapter->pdev->dev,
rbi->dma_addr)) {
dev_kfree_skb_any(rbi->skb);
@@ -609,7 +609,7 @@ vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx,
rbi->dma_addr = dma_map_page(
&adapter->pdev->dev,
rbi->page, 0, PAGE_SIZE,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
if (dma_mapping_error(&adapter->pdev->dev,
rbi->dma_addr)) {
put_page(rbi->page);
@@ -723,7 +723,7 @@ vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx,
tbi->map_type = VMXNET3_MAP_SINGLE;
tbi->dma_addr = dma_map_single(&adapter->pdev->dev,
skb->data + buf_offset, buf_size,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
if (dma_mapping_error(&adapter->pdev->dev, tbi->dma_addr))
return -EFAULT;
@@ -1449,7 +1449,7 @@ vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
new_dma_addr =
dma_map_single(&adapter->pdev->dev,
new_skb->data, rbi->len,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
if (dma_mapping_error(&adapter->pdev->dev,
new_dma_addr)) {
dev_kfree_skb(new_skb);
@@ -1467,7 +1467,7 @@ vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
dma_unmap_single(&adapter->pdev->dev,
rbi->dma_addr,
rbi->len,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
/* Immediate refill */
rbi->skb = new_skb;
@@ -1546,7 +1546,7 @@ vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
new_dma_addr = dma_map_page(&adapter->pdev->dev,
new_page,
0, PAGE_SIZE,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
if (dma_mapping_error(&adapter->pdev->dev,
new_dma_addr)) {
put_page(new_page);
@@ -1559,7 +1559,7 @@ vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
dma_unmap_page(&adapter->pdev->dev,
rbi->dma_addr, rbi->len,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
vmxnet3_append_frag(ctx->skb, rcd, rbi);
@@ -1677,13 +1677,13 @@ vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq,
if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD &&
rq->buf_info[ring_idx][i].skb) {
dma_unmap_single(&adapter->pdev->dev, rxd->addr,
- rxd->len, PCI_DMA_FROMDEVICE);
+ rxd->len, DMA_FROM_DEVICE);
dev_kfree_skb(rq->buf_info[ring_idx][i].skb);
rq->buf_info[ring_idx][i].skb = NULL;
} else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY &&
rq->buf_info[ring_idx][i].page) {
dma_unmap_page(&adapter->pdev->dev, rxd->addr,
- rxd->len, PCI_DMA_FROMDEVICE);
+ rxd->len, DMA_FROM_DEVICE);
put_page(rq->buf_info[ring_idx][i].page);
rq->buf_info[ring_idx][i].page = NULL;
}
@@ -2419,7 +2419,7 @@ vmxnet3_set_mc(struct net_device *netdev)
&adapter->pdev->dev,
new_table,
sz,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
if (!dma_mapping_error(&adapter->pdev->dev,
new_table_pa)) {
new_mode |= VMXNET3_RXM_MCAST;
@@ -2455,7 +2455,7 @@ vmxnet3_set_mc(struct net_device *netdev)
if (new_table_pa_valid)
dma_unmap_single(&adapter->pdev->dev, new_table_pa,
- rxConf->mfTableLen, PCI_DMA_TODEVICE);
+ rxConf->mfTableLen, DMA_TO_DEVICE);
kfree(new_table);
}
@@ -3438,19 +3438,12 @@ vmxnet3_probe_device(struct pci_dev *pdev,
adapter->rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
adapter->rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) {
- if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
- dev_err(&pdev->dev,
- "pci_set_consistent_dma_mask failed\n");
- err = -EIO;
- goto err_set_mask;
- }
+ if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) == 0) {
dma64 = true;
} else {
- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
- dev_err(&pdev->dev,
- "pci_set_dma_mask failed\n");
- err = -EIO;
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(&pdev->dev, "dma_set_mask failed\n");
goto err_set_mask;
}
dma64 = false;
@@ -3459,7 +3452,7 @@ vmxnet3_probe_device(struct pci_dev *pdev,
spin_lock_init(&adapter->cmd_lock);
adapter->adapter_pa = dma_map_single(&adapter->pdev->dev, adapter,
sizeof(struct vmxnet3_adapter),
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
if (dma_mapping_error(&adapter->pdev->dev, adapter->adapter_pa)) {
dev_err(&pdev->dev, "Failed to map dma\n");
err = -EFAULT;
@@ -3713,7 +3706,7 @@ vmxnet3_probe_device(struct pci_dev *pdev,
adapter->shared, adapter->shared_pa);
err_alloc_shared:
dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa,
- sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE);
+ sizeof(struct vmxnet3_adapter), DMA_TO_DEVICE);
err_set_mask:
free_netdev(netdev);
return err;
@@ -3781,7 +3774,7 @@ vmxnet3_remove_device(struct pci_dev *pdev)
sizeof(struct Vmxnet3_DriverShared),
adapter->shared, adapter->shared_pa);
dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa,
- sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE);
+ sizeof(struct vmxnet3_adapter), DMA_TO_DEVICE);
free_netdev(netdev);
}
--
2.30.2
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