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Message-Id: <20200718115546.358240-1-christophe.jaillet@wanadoo.fr>
Date: Sat, 18 Jul 2020 13:55:46 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: kuba@...nel.org, davem@...emloft.net, jeffrey.t.kirsher@...el.com
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] e100: 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 'e100_alloc()', GFP_KERNEL can be used because
it is only called from the probe function and no lock is acquired.
@@
@@
- 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/ethernet/intel/e100.c | 92 ++++++++++++++++---------------
1 file changed, 49 insertions(+), 43 deletions(-)
diff --git a/drivers/net/ethernet/intel/e100.c b/drivers/net/ethernet/intel/e100.c
index 91c64f91a835..ec6b1024cd8a 100644
--- a/drivers/net/ethernet/intel/e100.c
+++ b/drivers/net/ethernet/intel/e100.c
@@ -1739,10 +1739,10 @@ static int e100_xmit_prepare(struct nic *nic, struct cb *cb,
dma_addr_t dma_addr;
cb->command = nic->tx_command;
- dma_addr = pci_map_single(nic->pdev,
- skb->data, skb->len, PCI_DMA_TODEVICE);
+ dma_addr = dma_map_single(&nic->pdev->dev, skb->data, skb->len,
+ DMA_TO_DEVICE);
/* If we can't map the skb, have the upper layer try later */
- if (pci_dma_mapping_error(nic->pdev, dma_addr)) {
+ if (dma_mapping_error(&nic->pdev->dev, dma_addr)) {
dev_kfree_skb_any(skb);
skb = NULL;
return -ENOMEM;
@@ -1828,10 +1828,10 @@ static int e100_tx_clean(struct nic *nic)
dev->stats.tx_packets++;
dev->stats.tx_bytes += cb->skb->len;
- pci_unmap_single(nic->pdev,
- le32_to_cpu(cb->u.tcb.tbd.buf_addr),
- le16_to_cpu(cb->u.tcb.tbd.size),
- PCI_DMA_TODEVICE);
+ dma_unmap_single(&nic->pdev->dev,
+ le32_to_cpu(cb->u.tcb.tbd.buf_addr),
+ le16_to_cpu(cb->u.tcb.tbd.size),
+ DMA_TO_DEVICE);
dev_kfree_skb_any(cb->skb);
cb->skb = NULL;
tx_cleaned = 1;
@@ -1855,10 +1855,10 @@ static void e100_clean_cbs(struct nic *nic)
while (nic->cbs_avail != nic->params.cbs.count) {
struct cb *cb = nic->cb_to_clean;
if (cb->skb) {
- pci_unmap_single(nic->pdev,
- le32_to_cpu(cb->u.tcb.tbd.buf_addr),
- le16_to_cpu(cb->u.tcb.tbd.size),
- PCI_DMA_TODEVICE);
+ dma_unmap_single(&nic->pdev->dev,
+ le32_to_cpu(cb->u.tcb.tbd.buf_addr),
+ le16_to_cpu(cb->u.tcb.tbd.size),
+ DMA_TO_DEVICE);
dev_kfree_skb(cb->skb);
}
nic->cb_to_clean = nic->cb_to_clean->next;
@@ -1925,10 +1925,10 @@ static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
/* Init, and map the RFD. */
skb_copy_to_linear_data(rx->skb, &nic->blank_rfd, sizeof(struct rfd));
- rx->dma_addr = pci_map_single(nic->pdev, rx->skb->data,
- RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
+ rx->dma_addr = dma_map_single(&nic->pdev->dev, rx->skb->data,
+ RFD_BUF_LEN, DMA_BIDIRECTIONAL);
- if (pci_dma_mapping_error(nic->pdev, rx->dma_addr)) {
+ if (dma_mapping_error(&nic->pdev->dev, rx->dma_addr)) {
dev_kfree_skb_any(rx->skb);
rx->skb = NULL;
rx->dma_addr = 0;
@@ -1941,8 +1941,10 @@ static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
if (rx->prev->skb) {
struct rfd *prev_rfd = (struct rfd *)rx->prev->skb->data;
put_unaligned_le32(rx->dma_addr, &prev_rfd->link);
- pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr,
- sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
+ dma_sync_single_for_device(&nic->pdev->dev,
+ rx->prev->dma_addr,
+ sizeof(struct rfd),
+ DMA_BIDIRECTIONAL);
}
return 0;
@@ -1961,8 +1963,8 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx,
return -EAGAIN;
/* Need to sync before taking a peek at cb_complete bit */
- pci_dma_sync_single_for_cpu(nic->pdev, rx->dma_addr,
- sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
+ dma_sync_single_for_cpu(&nic->pdev->dev, rx->dma_addr,
+ sizeof(struct rfd), DMA_BIDIRECTIONAL);
rfd_status = le16_to_cpu(rfd->status);
netif_printk(nic, rx_status, KERN_DEBUG, nic->netdev,
@@ -1981,9 +1983,9 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx,
if (ioread8(&nic->csr->scb.status) & rus_no_res)
nic->ru_running = RU_SUSPENDED;
- pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr,
- sizeof(struct rfd),
- PCI_DMA_FROMDEVICE);
+ dma_sync_single_for_device(&nic->pdev->dev, rx->dma_addr,
+ sizeof(struct rfd),
+ DMA_FROM_DEVICE);
return -ENODATA;
}
@@ -1995,8 +1997,8 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx,
actual_size = RFD_BUF_LEN - sizeof(struct rfd);
/* Get data */
- pci_unmap_single(nic->pdev, rx->dma_addr,
- RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
+ dma_unmap_single(&nic->pdev->dev, rx->dma_addr, RFD_BUF_LEN,
+ DMA_BIDIRECTIONAL);
/* If this buffer has the el bit, but we think the receiver
* is still running, check to see if it really stopped while
@@ -2097,22 +2099,25 @@ static void e100_rx_clean(struct nic *nic, unsigned int *work_done,
(struct rfd *)new_before_last_rx->skb->data;
new_before_last_rfd->size = 0;
new_before_last_rfd->command |= cpu_to_le16(cb_el);
- pci_dma_sync_single_for_device(nic->pdev,
- new_before_last_rx->dma_addr, sizeof(struct rfd),
- PCI_DMA_BIDIRECTIONAL);
+ dma_sync_single_for_device(&nic->pdev->dev,
+ new_before_last_rx->dma_addr,
+ sizeof(struct rfd),
+ DMA_BIDIRECTIONAL);
/* Now that we have a new stopping point, we can clear the old
* stopping point. We must sync twice to get the proper
* ordering on the hardware side of things. */
old_before_last_rfd->command &= ~cpu_to_le16(cb_el);
- pci_dma_sync_single_for_device(nic->pdev,
- old_before_last_rx->dma_addr, sizeof(struct rfd),
- PCI_DMA_BIDIRECTIONAL);
+ dma_sync_single_for_device(&nic->pdev->dev,
+ old_before_last_rx->dma_addr,
+ sizeof(struct rfd),
+ DMA_BIDIRECTIONAL);
old_before_last_rfd->size = cpu_to_le16(VLAN_ETH_FRAME_LEN
+ ETH_FCS_LEN);
- pci_dma_sync_single_for_device(nic->pdev,
- old_before_last_rx->dma_addr, sizeof(struct rfd),
- PCI_DMA_BIDIRECTIONAL);
+ dma_sync_single_for_device(&nic->pdev->dev,
+ old_before_last_rx->dma_addr,
+ sizeof(struct rfd),
+ DMA_BIDIRECTIONAL);
}
if (restart_required) {
@@ -2134,8 +2139,9 @@ static void e100_rx_clean_list(struct nic *nic)
if (nic->rxs) {
for (rx = nic->rxs, i = 0; i < count; rx++, i++) {
if (rx->skb) {
- pci_unmap_single(nic->pdev, rx->dma_addr,
- RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
+ dma_unmap_single(&nic->pdev->dev,
+ rx->dma_addr, RFD_BUF_LEN,
+ DMA_BIDIRECTIONAL);
dev_kfree_skb(rx->skb);
}
}
@@ -2177,8 +2183,8 @@ static int e100_rx_alloc_list(struct nic *nic)
before_last = (struct rfd *)rx->skb->data;
before_last->command |= cpu_to_le16(cb_el);
before_last->size = 0;
- pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr,
- sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
+ dma_sync_single_for_device(&nic->pdev->dev, rx->dma_addr,
+ sizeof(struct rfd), DMA_BIDIRECTIONAL);
nic->rx_to_use = nic->rx_to_clean = nic->rxs;
nic->ru_running = RU_SUSPENDED;
@@ -2377,8 +2383,8 @@ static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
msleep(10);
- pci_dma_sync_single_for_cpu(nic->pdev, nic->rx_to_clean->dma_addr,
- RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
+ dma_sync_single_for_cpu(&nic->pdev->dev, nic->rx_to_clean->dma_addr,
+ RFD_BUF_LEN, DMA_BIDIRECTIONAL);
if (memcmp(nic->rx_to_clean->skb->data + sizeof(struct rfd),
skb->data, ETH_DATA_LEN))
@@ -2751,16 +2757,16 @@ static int e100_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
static int e100_alloc(struct nic *nic)
{
- nic->mem = pci_alloc_consistent(nic->pdev, sizeof(struct mem),
- &nic->dma_addr);
+ nic->mem = dma_alloc_coherent(&nic->pdev->dev, sizeof(struct mem),
+ &nic->dma_addr, GFP_KERNEL);
return nic->mem ? 0 : -ENOMEM;
}
static void e100_free(struct nic *nic)
{
if (nic->mem) {
- pci_free_consistent(nic->pdev, sizeof(struct mem),
- nic->mem, nic->dma_addr);
+ dma_free_coherent(&nic->pdev->dev, sizeof(struct mem),
+ nic->mem, nic->dma_addr);
nic->mem = NULL;
}
}
@@ -2853,7 +2859,7 @@ static int e100_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_out_disable_pdev;
}
- if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
+ if ((err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)))) {
netif_err(nic, probe, nic->netdev, "No usable DMA configuration, aborting\n");
goto err_out_free_res;
}
--
2.25.1
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