2021-08-22 09:35:05

by Christophe JAILLET

[permalink] [raw]
Subject: [PATCH] media: 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 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 <[email protected]>
---
If needed, see post from Christoph Hellwig on the kernel-janitors ML:
https://marc.info/?l=kernel-janitors&m=158745678307186&w=4

This patch is purely mechanical and compile tested. I hope it is ok to
update the "drivers/media/pci/" directory all at once.
---
drivers/media/pci/cobalt/cobalt-driver.c | 4 ++--
drivers/media/pci/cx18/cx18-driver.c | 2 +-
drivers/media/pci/cx18/cx18-queue.c | 13 ++++++------
drivers/media/pci/cx18/cx18-streams.c | 16 +++++++--------
drivers/media/pci/ddbridge/ddbridge-main.c | 4 ++--
drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 2 +-
.../pci/netup_unidvb/netup_unidvb_core.c | 2 +-
drivers/media/pci/pluto2/pluto2.c | 20 +++++++++----------
drivers/media/pci/pt1/pt1.c | 2 +-
drivers/media/pci/tw5864/tw5864-core.c | 2 +-
10 files changed, 34 insertions(+), 33 deletions(-)

diff --git a/drivers/media/pci/cobalt/cobalt-driver.c b/drivers/media/pci/cobalt/cobalt-driver.c
index 16af58f2f93c..74edcc76d12f 100644
--- a/drivers/media/pci/cobalt/cobalt-driver.c
+++ b/drivers/media/pci/cobalt/cobalt-driver.c
@@ -332,8 +332,8 @@ static int cobalt_setup_pci(struct cobalt *cobalt, struct pci_dev *pci_dev,
}
}

- if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(64))) {
- ret = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
+ if (dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(64))) {
+ ret = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32));
if (ret) {
cobalt_err("no suitable DMA available\n");
goto err_disable;
diff --git a/drivers/media/pci/cx18/cx18-driver.c b/drivers/media/pci/cx18/cx18-driver.c
index f2440eb38820..59497ba6bf1f 100644
--- a/drivers/media/pci/cx18/cx18-driver.c
+++ b/drivers/media/pci/cx18/cx18-driver.c
@@ -804,7 +804,7 @@ static int cx18_setup_pci(struct cx18 *cx, struct pci_dev *pci_dev,
CX18_ERR("Can't enable device %d!\n", cx->instance);
return -EIO;
}
- if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32))) {
+ if (dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32))) {
CX18_ERR("No suitable DMA available, card %d\n", cx->instance);
return -EIO;
}
diff --git a/drivers/media/pci/cx18/cx18-queue.c b/drivers/media/pci/cx18/cx18-queue.c
index 2f5df471dada..b9ae34a5e427 100644
--- a/drivers/media/pci/cx18/cx18-queue.c
+++ b/drivers/media/pci/cx18/cx18-queue.c
@@ -325,8 +325,8 @@ void _cx18_mdl_sync_for_device(struct cx18_stream *s, struct cx18_mdl *mdl)
struct cx18_buffer *buf;

list_for_each_entry(buf, &mdl->buf_list, list)
- pci_dma_sync_single_for_device(pci_dev, buf->dma_handle,
- buf_size, dma);
+ dma_sync_single_for_device(&pci_dev->dev, buf->dma_handle,
+ buf_size, dma);
}

int cx18_stream_alloc(struct cx18_stream *s)
@@ -385,8 +385,9 @@ int cx18_stream_alloc(struct cx18_stream *s)
cx18_enqueue(s, mdl, &s->q_idle);

INIT_LIST_HEAD(&buf->list);
- buf->dma_handle = pci_map_single(s->cx->pci_dev,
- buf->buf, s->buf_size, s->dma);
+ buf->dma_handle = dma_map_single(&s->cx->pci_dev->dev,
+ buf->buf, s->buf_size,
+ s->dma);
cx18_buf_sync_for_cpu(s, buf);
list_add_tail(&buf->list, &s->buf_pool);
}
@@ -419,8 +420,8 @@ void cx18_stream_free(struct cx18_stream *s)
buf = list_first_entry(&s->buf_pool, struct cx18_buffer, list);
list_del_init(&buf->list);

- pci_unmap_single(s->cx->pci_dev, buf->dma_handle,
- s->buf_size, s->dma);
+ dma_unmap_single(&s->cx->pci_dev->dev, buf->dma_handle,
+ s->buf_size, s->dma);
kfree(buf->buf);
kfree(buf);
}
diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c
index 16d37ab48906..87ff554bb2d2 100644
--- a/drivers/media/pci/cx18/cx18-streams.c
+++ b/drivers/media/pci/cx18/cx18-streams.c
@@ -49,44 +49,44 @@ static struct {
{ /* CX18_ENC_STREAM_TYPE_MPG */
"encoder MPEG",
VFL_TYPE_VIDEO, 0,
- PCI_DMA_FROMDEVICE,
+ DMA_FROM_DEVICE,
V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
V4L2_CAP_AUDIO | V4L2_CAP_TUNER
},
{ /* CX18_ENC_STREAM_TYPE_TS */
"TS",
VFL_TYPE_VIDEO, -1,
- PCI_DMA_FROMDEVICE,
+ DMA_FROM_DEVICE,
},
{ /* CX18_ENC_STREAM_TYPE_YUV */
"encoder YUV",
VFL_TYPE_VIDEO, CX18_V4L2_ENC_YUV_OFFSET,
- PCI_DMA_FROMDEVICE,
+ DMA_FROM_DEVICE,
V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING | V4L2_CAP_AUDIO | V4L2_CAP_TUNER
},
{ /* CX18_ENC_STREAM_TYPE_VBI */
"encoder VBI",
VFL_TYPE_VBI, 0,
- PCI_DMA_FROMDEVICE,
+ DMA_FROM_DEVICE,
V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE |
V4L2_CAP_READWRITE | V4L2_CAP_TUNER
},
{ /* CX18_ENC_STREAM_TYPE_PCM */
"encoder PCM audio",
VFL_TYPE_VIDEO, CX18_V4L2_ENC_PCM_OFFSET,
- PCI_DMA_FROMDEVICE,
+ DMA_FROM_DEVICE,
V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
},
{ /* CX18_ENC_STREAM_TYPE_IDX */
"encoder IDX",
VFL_TYPE_VIDEO, -1,
- PCI_DMA_FROMDEVICE,
+ DMA_FROM_DEVICE,
},
{ /* CX18_ENC_STREAM_TYPE_RAD */
"encoder radio",
VFL_TYPE_RADIO, 0,
- PCI_DMA_NONE,
+ DMA_NONE,
V4L2_CAP_RADIO | V4L2_CAP_TUNER
},
};
@@ -324,7 +324,7 @@ static int cx18_prep_dev(struct cx18 *cx, int type)

/* User explicitly selected 0 buffers for these streams, so don't
create them. */
- if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
+ if (cx18_stream_info[type].dma != DMA_NONE &&
cx->stream_buffers[type] == 0) {
CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
return 0;
diff --git a/drivers/media/pci/ddbridge/ddbridge-main.c b/drivers/media/pci/ddbridge/ddbridge-main.c
index 03dc9924fa2c..25d0d6745b52 100644
--- a/drivers/media/pci/ddbridge/ddbridge-main.c
+++ b/drivers/media/pci/ddbridge/ddbridge-main.c
@@ -180,8 +180,8 @@ static int ddb_probe(struct pci_dev *pdev,

pci_set_master(pdev);

- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
+ if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))
+ if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)))
return -ENODEV;

dev = vzalloc(sizeof(*dev));
diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index e84b8faf76a2..f8c32e1294cf 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -1763,7 +1763,7 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,

pci_set_master(pci_dev);

- r = pci_set_dma_mask(pci_dev, CIO2_DMA_MASK);
+ r = dma_set_mask(&pci_dev->dev, CIO2_DMA_MASK);
if (r) {
dev_err(&pci_dev->dev, "failed to set DMA mask (%d)\n", r);
return -ENODEV;
diff --git a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
index 77bae1468551..8287851b5ffd 100644
--- a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
+++ b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
@@ -846,7 +846,7 @@ static int netup_unidvb_initdev(struct pci_dev *pci_dev,
"%s(): board vendor 0x%x, revision 0x%x\n",
__func__, board_vendor, board_revision);
pci_set_master(pci_dev);
- if (pci_set_dma_mask(pci_dev, 0xffffffff) < 0) {
+ if (dma_set_mask(&pci_dev->dev, 0xffffffff) < 0) {
dev_err(&pci_dev->dev,
"%s(): 32bit PCI DMA is not supported\n", __func__);
goto pci_detect_err;
diff --git a/drivers/media/pci/pluto2/pluto2.c b/drivers/media/pci/pluto2/pluto2.c
index f1f4793a4452..6ac9b9bd7435 100644
--- a/drivers/media/pci/pluto2/pluto2.c
+++ b/drivers/media/pci/pluto2/pluto2.c
@@ -228,16 +228,16 @@ static void pluto_set_dma_addr(struct pluto *pluto)

static int pluto_dma_map(struct pluto *pluto)
{
- pluto->dma_addr = pci_map_single(pluto->pdev, pluto->dma_buf,
- TS_DMA_BYTES, PCI_DMA_FROMDEVICE);
+ pluto->dma_addr = dma_map_single(&pluto->pdev->dev, pluto->dma_buf,
+ TS_DMA_BYTES, DMA_FROM_DEVICE);

- return pci_dma_mapping_error(pluto->pdev, pluto->dma_addr);
+ return dma_mapping_error(&pluto->pdev->dev, pluto->dma_addr);
}

static void pluto_dma_unmap(struct pluto *pluto)
{
- pci_unmap_single(pluto->pdev, pluto->dma_addr,
- TS_DMA_BYTES, PCI_DMA_FROMDEVICE);
+ dma_unmap_single(&pluto->pdev->dev, pluto->dma_addr, TS_DMA_BYTES,
+ DMA_FROM_DEVICE);
}

static int pluto_start_feed(struct dvb_demux_feed *f)
@@ -276,8 +276,8 @@ static void pluto_dma_end(struct pluto *pluto, unsigned int nbpackets)
{
/* synchronize the DMA transfer with the CPU
* first so that we see updated contents. */
- pci_dma_sync_single_for_cpu(pluto->pdev, pluto->dma_addr,
- TS_DMA_BYTES, PCI_DMA_FROMDEVICE);
+ dma_sync_single_for_cpu(&pluto->pdev->dev, pluto->dma_addr,
+ TS_DMA_BYTES, DMA_FROM_DEVICE);

/* Workaround for broken hardware:
* [1] On startup NBPACKETS seems to contain an uninitialized value,
@@ -310,8 +310,8 @@ static void pluto_dma_end(struct pluto *pluto, unsigned int nbpackets)
pluto_set_dma_addr(pluto);

/* sync the buffer and give it back to the card */
- pci_dma_sync_single_for_device(pluto->pdev, pluto->dma_addr,
- TS_DMA_BYTES, PCI_DMA_FROMDEVICE);
+ dma_sync_single_for_device(&pluto->pdev->dev, pluto->dma_addr,
+ TS_DMA_BYTES, DMA_FROM_DEVICE);
}

static irqreturn_t pluto_irq(int irq, void *dev_id)
@@ -595,7 +595,7 @@ static int pluto2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
/* enable interrupts */
pci_write_config_dword(pdev, 0x6c, 0x8000);

- ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret < 0)
goto err_pci_disable_device;

diff --git a/drivers/media/pci/pt1/pt1.c b/drivers/media/pci/pt1/pt1.c
index f2aa36814fba..121a4a92ea10 100644
--- a/drivers/media/pci/pt1/pt1.c
+++ b/drivers/media/pci/pt1/pt1.c
@@ -1340,7 +1340,7 @@ static int pt1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ret < 0)
goto err;

- ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret < 0)
goto err_pci_disable_device;

diff --git a/drivers/media/pci/tw5864/tw5864-core.c b/drivers/media/pci/tw5864/tw5864-core.c
index 282f7dfb7aaf..23d3cae54a5d 100644
--- a/drivers/media/pci/tw5864/tw5864-core.c
+++ b/drivers/media/pci/tw5864/tw5864-core.c
@@ -262,7 +262,7 @@ static int tw5864_initdev(struct pci_dev *pci_dev,

pci_set_master(pci_dev);

- err = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
+ err = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32));
if (err) {
dev_err(&dev->pci->dev, "32 bit PCI DMA is not supported\n");
goto disable_pci;
--
2.30.2


2021-08-23 08:04:01

by Sakari Ailus

[permalink] [raw]
Subject: Re: [PATCH] media: switch from 'pci_' to 'dma_' API

Thanks, Christophe.

On Sun, Aug 22, 2021 at 11:30:08AM +0200, Christophe JAILLET wrote:
> 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 compile tested.

Reviewed-by: Sakari Ailus <[email protected]>

--
Sakari Ailus

2021-08-23 08:10:55

by Akihiro TSUKADA

[permalink] [raw]
Subject: Re: [PATCH] media: switch from 'pci_' to 'dma_' API

> drivers/media/pci/pt1/pt1.c | 2 +-

> diff --git a/drivers/media/pci/pt1/pt1.c b/drivers/media/pci/pt1/pt1.c
> index f2aa36814fba..121a4a92ea10 100644
> --- a/drivers/media/pci/pt1/pt1.c
> +++ b/drivers/media/pci/pt1/pt1.c
> @@ -1340,7 +1340,7 @@ static int pt1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> if (ret < 0)
> goto err;
>
> - ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
> + ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
> if (ret < 0)
> goto err_pci_disable_device;
>

Acked-by: Akihiro Tsukada <[email protected]>
Tested-by: Akihiro Tsukada <[email protected]>

--
tsukada