From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: gregkh@linuxfoundation.org, jirislaby@kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH] tty: synclink_gt: switch from 'pci_' to 'dma_' API
Date: Thu, 6 Aug 2020 07:44:04 +0200 [thread overview]
Message-ID: <20200806054404.728854-1-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 'alloc_desc()' and 'alloc_bufs()', GFP_KERNEL
can be used because it is only called from a probe function and no lock is
acquired.
The call chain is:
init_one (the probe function)
--> device_init
--> alloc_dma_bufs
--> alloc_desc
--> alloc_bufs
@@
@@
- 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/tty/synclink_gt.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index b794177ccfb9..1edf06653148 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -3341,8 +3341,8 @@ static int alloc_desc(struct slgt_info *info)
unsigned int pbufs;
/* allocate memory to hold descriptor lists */
- info->bufs = pci_zalloc_consistent(info->pdev, DESC_LIST_SIZE,
- &info->bufs_dma_addr);
+ info->bufs = dma_alloc_coherent(&info->pdev->dev, DESC_LIST_SIZE,
+ &info->bufs_dma_addr, GFP_KERNEL);
if (info->bufs == NULL)
return -ENOMEM;
@@ -3384,7 +3384,8 @@ static int alloc_desc(struct slgt_info *info)
static void free_desc(struct slgt_info *info)
{
if (info->bufs != NULL) {
- pci_free_consistent(info->pdev, DESC_LIST_SIZE, info->bufs, info->bufs_dma_addr);
+ dma_free_coherent(&info->pdev->dev, DESC_LIST_SIZE,
+ info->bufs, info->bufs_dma_addr);
info->bufs = NULL;
info->rbufs = NULL;
info->tbufs = NULL;
@@ -3395,7 +3396,9 @@ static int alloc_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count)
{
int i;
for (i=0; i < count; i++) {
- if ((bufs[i].buf = pci_alloc_consistent(info->pdev, DMABUFSIZE, &bufs[i].buf_dma_addr)) == NULL)
+ bufs[i].buf = dma_alloc_coherent(&info->pdev->dev, DMABUFSIZE,
+ &bufs[i].buf_dma_addr, GFP_KERNEL);
+ if (!bufs[i].buf)
return -ENOMEM;
bufs[i].pbuf = cpu_to_le32((unsigned int)bufs[i].buf_dma_addr);
}
@@ -3408,7 +3411,8 @@ static void free_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count)
for (i=0; i < count; i++) {
if (bufs[i].buf == NULL)
continue;
- pci_free_consistent(info->pdev, DMABUFSIZE, bufs[i].buf, bufs[i].buf_dma_addr);
+ dma_free_coherent(&info->pdev->dev, DMABUFSIZE, bufs[i].buf,
+ bufs[i].buf_dma_addr);
bufs[i].buf = NULL;
}
}
--
2.25.1
next reply other threads:[~2020-08-06 11:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-06 5:44 Christophe JAILLET [this message]
2020-08-08 7:03 ` [PATCH] tty: synclink_gt: switch from 'pci_' to 'dma_' API Jiri Slaby
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=20200806054404.728854-1-christophe.jaillet@wanadoo.fr \
--to=christophe.jaillet@wanadoo.fr \
--cc=gregkh@linuxfoundation.org \
--cc=jirislaby@kernel.org \
--cc=kernel-janitors@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/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).