From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: isdn@linux-pingi.de, davem@davemloft.net,
sergey.senozhatsky@gmail.com, wangkefeng.wang@huawei.com
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH] mISDN: switch from 'pci_' to 'dma_' API
Date: Sat, 18 Jul 2020 12:30:33 +0200 [thread overview]
Message-ID: <20200718103033.352247-1-christophe.jaillet@wanadoo.fr> (raw)
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 'setup_hw()' (hfcpci.c) GFP_KERNEL can be used
because it is called from the probe function and no lock is taken.
The call chain is:
hfc_probe()
--> setup_card()
--> setup_hw()
When memory is allocated in 'inittiger()' (netjet.c) GFP_ATOMIC must be
used because a spin_lock is taken by the caller (i.e. 'nj_init_card()')
This is also consistent with the other allocations done in the function.
@@
@@
- 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>
---
If needed, see post from Christoph Hellwig on the kernel-janitors ML:
https://marc.info/?l=kernel-janitors&m=158745678307186&w=4
---
drivers/isdn/hardware/mISDN/hfcpci.c | 12 +++++++-----
drivers/isdn/hardware/mISDN/netjet.c | 8 ++++----
2 files changed, 11 insertions(+), 9 deletions(-)
diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index abdf787c1a71..904a4f4c5ff9 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -158,7 +158,8 @@ release_io_hfcpci(struct hfc_pci *hc)
/* disable memory mapped ports + busmaster */
pci_write_config_word(hc->pdev, PCI_COMMAND, 0);
del_timer(&hc->hw.timer);
- pci_free_consistent(hc->pdev, 0x8000, hc->hw.fifos, hc->hw.dmahandle);
+ dma_free_coherent(&hc->pdev->dev, 0x8000, hc->hw.fifos,
+ hc->hw.dmahandle);
iounmap(hc->hw.pci_io);
}
@@ -2004,8 +2005,9 @@ setup_hw(struct hfc_pci *hc)
}
/* Allocate memory for FIFOS */
/* the memory needs to be on a 32k boundary within the first 4G */
- pci_set_dma_mask(hc->pdev, 0xFFFF8000);
- buffer = pci_alloc_consistent(hc->pdev, 0x8000, &hc->hw.dmahandle);
+ dma_set_mask(&hc->pdev->dev, 0xFFFF8000);
+ buffer = dma_alloc_coherent(&hc->pdev->dev, 0x8000, &hc->hw.dmahandle,
+ GFP_KERNEL);
/* We silently assume the address is okay if nonzero */
if (!buffer) {
printk(KERN_WARNING
@@ -2018,8 +2020,8 @@ setup_hw(struct hfc_pci *hc)
if (unlikely(!hc->hw.pci_io)) {
printk(KERN_WARNING
"HFC-PCI: Error in ioremap for PCI!\n");
- pci_free_consistent(hc->pdev, 0x8000, hc->hw.fifos,
- hc->hw.dmahandle);
+ dma_free_coherent(&hc->pdev->dev, 0x8000, hc->hw.fifos,
+ hc->hw.dmahandle);
return 1;
}
diff --git a/drivers/isdn/hardware/mISDN/netjet.c b/drivers/isdn/hardware/mISDN/netjet.c
index 6aae97e827b7..ee925b58bbce 100644
--- a/drivers/isdn/hardware/mISDN/netjet.c
+++ b/drivers/isdn/hardware/mISDN/netjet.c
@@ -297,8 +297,8 @@ inittiger(struct tiger_hw *card)
{
int i;
- card->dma_p = pci_alloc_consistent(card->pdev, NJ_DMA_SIZE,
- &card->dma);
+ card->dma_p = dma_alloc_coherent(&card->pdev->dev, NJ_DMA_SIZE,
+ &card->dma, GFP_ATOMIC);
if (!card->dma_p) {
pr_info("%s: No DMA memory\n", card->name);
return -ENOMEM;
@@ -965,8 +965,8 @@ nj_release(struct tiger_hw *card)
kfree(card->bc[i].hrbuf);
}
if (card->dma_p)
- pci_free_consistent(card->pdev, NJ_DMA_SIZE,
- card->dma_p, card->dma);
+ dma_free_coherent(&card->pdev->dev, NJ_DMA_SIZE, card->dma_p,
+ card->dma);
write_lock_irqsave(&card_lock, flags);
list_del(&card->list);
write_unlock_irqrestore(&card_lock, flags);
--
2.25.1
next reply other threads:[~2020-07-18 10:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-18 10:30 Christophe JAILLET [this message]
2020-07-21 1:32 ` [PATCH] mISDN: switch from 'pci_' to 'dma_' API David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200718103033.352247-1-christophe.jaillet@wanadoo.fr \
--to=christophe.jaillet@wanadoo.fr \
--cc=davem@davemloft.net \
--cc=isdn@linux-pingi.de \
--cc=kernel-janitors@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=sergey.senozhatsky@gmail.com \
--cc=wangkefeng.wang@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).