* [PATCH] fpga: dfl: pci: switch from 'pci_' to 'dma_' API
@ 2021-08-22 14:51 Christophe JAILLET
2021-08-23 2:56 ` Xu Yilun
0 siblings, 1 reply; 2+ messages in thread
From: Christophe JAILLET @ 2021-08-22 14:51 UTC (permalink / raw)
To: hao.wu, trix, mdf
Cc: linux-fpga, linux-kernel, kernel-janitors, Christophe JAILLET
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 hand modified to use 'dma_set_mask_and_coherent()' instead of
'pci_set_dma_mask()/pci_set_consistent_dma_mask()' when applicable.
This is less verbose.
The explicit 'ret = -EIO;' has been removed because
'dma_set_mask_and_coherent()' returns 0 or -EIO, so its return code can be
used directly.
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 <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/fpga/dfl-pci.c | 14 ++++----------
1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/drivers/fpga/dfl-pci.c b/drivers/fpga/dfl-pci.c
index 4d68719e608f..96a11084bef4 100644
--- a/drivers/fpga/dfl-pci.c
+++ b/drivers/fpga/dfl-pci.c
@@ -354,16 +354,10 @@ int cci_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *pcidevid)
pci_set_master(pcidev);
- if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(64))) {
- ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
- if (ret)
- goto disable_error_report_exit;
- } else if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(32))) {
- ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
- if (ret)
- goto disable_error_report_exit;
- } else {
- ret = -EIO;
+ ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(64));
+ if (ret)
+ ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32));
+ if (ret) {
dev_err(&pcidev->dev, "No suitable DMA support available.\n");
goto disable_error_report_exit;
}
--
2.30.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] fpga: dfl: pci: switch from 'pci_' to 'dma_' API
2021-08-22 14:51 [PATCH] fpga: dfl: pci: switch from 'pci_' to 'dma_' API Christophe JAILLET
@ 2021-08-23 2:56 ` Xu Yilun
0 siblings, 0 replies; 2+ messages in thread
From: Xu Yilun @ 2021-08-23 2:56 UTC (permalink / raw)
To: Christophe JAILLET
Cc: hao.wu, trix, mdf, linux-fpga, linux-kernel, kernel-janitors
On Sun, Aug 22, 2021 at 04:51:11PM +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 hand modified to use 'dma_set_mask_and_coherent()' instead of
> 'pci_set_dma_mask()/pci_set_consistent_dma_mask()' when applicable.
> This is less verbose.
>
> The explicit 'ret = -EIO;' has been removed because
> 'dma_set_mask_and_coherent()' returns 0 or -EIO, so its return code can be
> used directly.
>
> 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 <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/fpga/dfl-pci.c | 14 ++++----------
> 1 file changed, 4 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/fpga/dfl-pci.c b/drivers/fpga/dfl-pci.c
> index 4d68719e608f..96a11084bef4 100644
> --- a/drivers/fpga/dfl-pci.c
> +++ b/drivers/fpga/dfl-pci.c
> @@ -354,16 +354,10 @@ int cci_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *pcidevid)
>
> pci_set_master(pcidev);
>
> - if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(64))) {
> - ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
> - if (ret)
> - goto disable_error_report_exit;
> - } else if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(32))) {
> - ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
> - if (ret)
> - goto disable_error_report_exit;
> - } else {
> - ret = -EIO;
> + ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(64));
> + if (ret)
> + ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32));
> + if (ret) {
> dev_err(&pcidev->dev, "No suitable DMA support available.\n");
> goto disable_error_report_exit;
> }
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Thanks,
Yilun
> --
> 2.30.2
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