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Message-Id: <20200722104534.30760-1-christophe.jaillet@wanadoo.fr>
Date: Wed, 22 Jul 2020 12:45:34 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: mcgrof@...nel.org, kvalo@...eaurora.org, davem@...emloft.net,
kuba@...nel.org
Cc: linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] prism54: 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 'islpci_alloc_memory()' (islpci_dev.c),
GFP_KERNEL can be used because it is only called from a probe function
and no spin_lock is taken in the between.
The call chain is:
prism54_probe (probe function, in 'islpci_hotplug.c')
--> islpci_setup (in 'islpci_dev.c')
--> islpci_alloc_memory (in 'islpci_dev.c')
@@
@@
- 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
---
.../wireless/intersil/prism54/islpci_dev.c | 30 +++++++++----------
.../wireless/intersil/prism54/islpci_eth.c | 24 +++++++--------
.../intersil/prism54/islpci_hotplug.c | 2 +-
.../wireless/intersil/prism54/islpci_mgt.c | 21 ++++++-------
4 files changed, 36 insertions(+), 41 deletions(-)
diff --git a/drivers/net/wireless/intersil/prism54/islpci_dev.c b/drivers/net/wireless/intersil/prism54/islpci_dev.c
index a9bae69222dc..efd64e555bb5 100644
--- a/drivers/net/wireless/intersil/prism54/islpci_dev.c
+++ b/drivers/net/wireless/intersil/prism54/islpci_dev.c
@@ -636,10 +636,10 @@ islpci_alloc_memory(islpci_private *priv)
*/
/* perform the allocation */
- priv->driver_mem_address = pci_alloc_consistent(priv->pdev,
- HOST_MEM_BLOCK,
- &priv->
- device_host_address);
+ priv->driver_mem_address = dma_alloc_coherent(&priv->pdev->dev,
+ HOST_MEM_BLOCK,
+ &priv->device_host_address,
+ GFP_KERNEL);
if (!priv->driver_mem_address) {
/* error allocating the block of PCI memory */
@@ -692,11 +692,9 @@ islpci_alloc_memory(islpci_private *priv)
/* map the allocated skb data area to pci */
priv->pci_map_rx_address[counter] =
- pci_map_single(priv->pdev, (void *) skb->data,
- MAX_FRAGMENT_SIZE_RX + 2,
- PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(priv->pdev,
- priv->pci_map_rx_address[counter])) {
+ dma_map_single(&priv->pdev->dev, (void *)skb->data,
+ MAX_FRAGMENT_SIZE_RX + 2, DMA_FROM_DEVICE);
+ if (dma_mapping_error(&priv->pdev->dev, priv->pci_map_rx_address[counter])) {
priv->pci_map_rx_address[counter] = 0;
/* error mapping the buffer to device
accessible memory address */
@@ -727,9 +725,9 @@ islpci_free_memory(islpci_private *priv)
/* free consistent DMA area... */
if (priv->driver_mem_address)
- pci_free_consistent(priv->pdev, HOST_MEM_BLOCK,
- priv->driver_mem_address,
- priv->device_host_address);
+ dma_free_coherent(&priv->pdev->dev, HOST_MEM_BLOCK,
+ priv->driver_mem_address,
+ priv->device_host_address);
/* clear some dangling pointers */
priv->driver_mem_address = NULL;
@@ -741,8 +739,8 @@ islpci_free_memory(islpci_private *priv)
for (counter = 0; counter < ISL38XX_CB_MGMT_QSIZE; counter++) {
struct islpci_membuf *buf = &priv->mgmt_rx[counter];
if (buf->pci_addr)
- pci_unmap_single(priv->pdev, buf->pci_addr,
- buf->size, PCI_DMA_FROMDEVICE);
+ dma_unmap_single(&priv->pdev->dev, buf->pci_addr,
+ buf->size, DMA_FROM_DEVICE);
buf->pci_addr = 0;
kfree(buf->mem);
buf->size = 0;
@@ -752,10 +750,10 @@ islpci_free_memory(islpci_private *priv)
/* clean up data rx buffers */
for (counter = 0; counter < ISL38XX_CB_RX_QSIZE; counter++) {
if (priv->pci_map_rx_address[counter])
- pci_unmap_single(priv->pdev,
+ dma_unmap_single(&priv->pdev->dev,
priv->pci_map_rx_address[counter],
MAX_FRAGMENT_SIZE_RX + 2,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
priv->pci_map_rx_address[counter] = 0;
if (priv->data_low_rx[counter])
diff --git a/drivers/net/wireless/intersil/prism54/islpci_eth.c b/drivers/net/wireless/intersil/prism54/islpci_eth.c
index 8d680250a281..74dd65716afd 100644
--- a/drivers/net/wireless/intersil/prism54/islpci_eth.c
+++ b/drivers/net/wireless/intersil/prism54/islpci_eth.c
@@ -50,9 +50,9 @@ islpci_eth_cleanup_transmit(islpci_private *priv,
skb, skb->data, skb->len, skb->truesize);
#endif
- pci_unmap_single(priv->pdev,
+ dma_unmap_single(&priv->pdev->dev,
priv->pci_map_tx_address[index],
- skb->len, PCI_DMA_TODEVICE);
+ skb->len, DMA_TO_DEVICE);
dev_kfree_skb_irq(skb);
skb = NULL;
}
@@ -176,10 +176,9 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
#endif
/* map the skb buffer to pci memory for DMA operation */
- pci_map_address = pci_map_single(priv->pdev,
- (void *) skb->data, skb->len,
- PCI_DMA_TODEVICE);
- if (pci_dma_mapping_error(priv->pdev, pci_map_address)) {
+ pci_map_address = dma_map_single(&priv->pdev->dev, (void *)skb->data,
+ skb->len, DMA_TO_DEVICE);
+ if (dma_mapping_error(&priv->pdev->dev, pci_map_address)) {
printk(KERN_WARNING "%s: cannot map buffer to PCI\n",
ndev->name);
goto drop_free;
@@ -323,9 +322,8 @@ islpci_eth_receive(islpci_private *priv)
#endif
/* delete the streaming DMA mapping before processing the skb */
- pci_unmap_single(priv->pdev,
- priv->pci_map_rx_address[index],
- MAX_FRAGMENT_SIZE_RX + 2, PCI_DMA_FROMDEVICE);
+ dma_unmap_single(&priv->pdev->dev, priv->pci_map_rx_address[index],
+ MAX_FRAGMENT_SIZE_RX + 2, DMA_FROM_DEVICE);
/* update the skb structure and align the buffer */
skb_put(skb, size);
@@ -431,11 +429,9 @@ islpci_eth_receive(islpci_private *priv)
/* set the streaming DMA mapping for proper PCI bus operation */
priv->pci_map_rx_address[index] =
- pci_map_single(priv->pdev, (void *) skb->data,
- MAX_FRAGMENT_SIZE_RX + 2,
- PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(priv->pdev,
- priv->pci_map_rx_address[index])) {
+ dma_map_single(&priv->pdev->dev, (void *)skb->data,
+ MAX_FRAGMENT_SIZE_RX + 2, DMA_FROM_DEVICE);
+ if (dma_mapping_error(&priv->pdev->dev, priv->pci_map_rx_address[index])) {
/* error mapping the buffer to device accessible memory address */
DEBUG(SHOW_ERROR_MESSAGES,
"Error mapping DMA address\n");
diff --git a/drivers/net/wireless/intersil/prism54/islpci_hotplug.c b/drivers/net/wireless/intersil/prism54/islpci_hotplug.c
index 20291c0d962d..a8835c4507d9 100644
--- a/drivers/net/wireless/intersil/prism54/islpci_hotplug.c
+++ b/drivers/net/wireless/intersil/prism54/islpci_hotplug.c
@@ -106,7 +106,7 @@ prism54_probe(struct pci_dev *pdev, const struct pci_device_id *id)
}
/* enable PCI DMA */
- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
+ if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
printk(KERN_ERR "%s: 32-bit PCI DMA not supported", DRV_NAME);
goto do_pci_disable_device;
}
diff --git a/drivers/net/wireless/intersil/prism54/islpci_mgt.c b/drivers/net/wireless/intersil/prism54/islpci_mgt.c
index e336eb106429..0c7fb76c7d1c 100644
--- a/drivers/net/wireless/intersil/prism54/islpci_mgt.c
+++ b/drivers/net/wireless/intersil/prism54/islpci_mgt.c
@@ -115,10 +115,11 @@ islpci_mgmt_rx_fill(struct net_device *ndev)
buf->size = MGMT_FRAME_SIZE;
}
if (buf->pci_addr == 0) {
- buf->pci_addr = pci_map_single(priv->pdev, buf->mem,
+ buf->pci_addr = dma_map_single(&priv->pdev->dev,
+ buf->mem,
MGMT_FRAME_SIZE,
- PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(priv->pdev, buf->pci_addr)) {
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&priv->pdev->dev, buf->pci_addr)) {
printk(KERN_WARNING
"Failed to make memory DMA'able.\n");
return -ENOMEM;
@@ -203,9 +204,9 @@ islpci_mgt_transmit(struct net_device *ndev, int operation, unsigned long oid,
#endif
err = -ENOMEM;
- buf.pci_addr = pci_map_single(priv->pdev, buf.mem, frag_len,
- PCI_DMA_TODEVICE);
- if (pci_dma_mapping_error(priv->pdev, buf.pci_addr)) {
+ buf.pci_addr = dma_map_single(&priv->pdev->dev, buf.mem, frag_len,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(&priv->pdev->dev, buf.pci_addr)) {
printk(KERN_WARNING "%s: cannot map PCI memory for mgmt\n",
ndev->name);
goto error_free;
@@ -302,8 +303,8 @@ islpci_mgt_receive(struct net_device *ndev)
}
/* Ensure the results of device DMA are visible to the CPU. */
- pci_dma_sync_single_for_cpu(priv->pdev, buf->pci_addr,
- buf->size, PCI_DMA_FROMDEVICE);
+ dma_sync_single_for_cpu(&priv->pdev->dev, buf->pci_addr,
+ buf->size, DMA_FROM_DEVICE);
/* Perform endianess conversion for PIMFOR header in-place. */
header = pimfor_decode_header(buf->mem, frag_len);
@@ -414,8 +415,8 @@ islpci_mgt_cleanup_transmit(struct net_device *ndev)
for (; priv->index_mgmt_tx < curr_frag; priv->index_mgmt_tx++) {
int index = priv->index_mgmt_tx % ISL38XX_CB_MGMT_QSIZE;
struct islpci_membuf *buf = &priv->mgmt_tx[index];
- pci_unmap_single(priv->pdev, buf->pci_addr, buf->size,
- PCI_DMA_TODEVICE);
+ dma_unmap_single(&priv->pdev->dev, buf->pci_addr, buf->size,
+ DMA_TO_DEVICE);
buf->pci_addr = 0;
kfree(buf->mem);
buf->mem = NULL;
--
2.25.1
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