* [PATCH] media: ttpci: switch from 'pci_' to 'dma_' API
@ 2021-05-06 21:06 Christophe JAILLET
0 siblings, 0 replies; 2+ messages in thread
From: Christophe JAILLET @ 2021-05-06 21:06 UTC (permalink / raw)
To: mchehab; +Cc: linux-media, 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 and has been
hand modified to replace GFP_ with a correct flag.
It has been compile tested.
When memory is allocated in 'ace_allocate_descriptors()' and
'ace_init()' GFP_KERNEL can be used because both functions are 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@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/media/pci/ttpci/budget-core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/media/pci/ttpci/budget-core.c b/drivers/media/pci/ttpci/budget-core.c
index d405eea5c37f..5d5796f24469 100644
--- a/drivers/media/pci/ttpci/budget-core.c
+++ b/drivers/media/pci/ttpci/budget-core.c
@@ -180,7 +180,8 @@ static void vpeirq(struct tasklet_struct *t)
u32 count;
/* Ensure streamed PCI data is synced to CPU */
- pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE);
+ dma_sync_sg_for_cpu(&budget->dev->pci->dev, budget->pt.slist,
+ budget->pt.nents, DMA_FROM_DEVICE);
/* nearest lower position divisible by 188 */
newdma -= newdma % 188;
--
2.30.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] media: ttpci: switch from 'pci_' to 'dma_' API
@ 2020-11-27 20:58 Christophe JAILLET
0 siblings, 0 replies; 2+ messages in thread
From: Christophe JAILLET @ 2020-11-27 20:58 UTC (permalink / raw)
To: mchehab, baijiaju, sean, allen.lkml, gustavoars
Cc: linux-media, 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 and has been
hand modified to replace GFP_ with a correct flag.
It has been compile tested.
When memory is allocated in 'av7110_attach()' GFP_KERNEL can be used
because this flag is already used above in the same function and no lock is
taken in the between.
@@
@@
- 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\x158745678307186&w=4
---
drivers/media/pci/ttpci/av7110.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/media/pci/ttpci/av7110.c b/drivers/media/pci/ttpci/av7110.c
index 2f7069e19b78..d74ee0ecfb36 100644
--- a/drivers/media/pci/ttpci/av7110.c
+++ b/drivers/media/pci/ttpci/av7110.c
@@ -1250,7 +1250,8 @@ static void vpeirq(struct tasklet_struct *t)
return;
/* Ensure streamed PCI data is synced to CPU */
- pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE);
+ dma_sync_sg_for_cpu(&budget->dev->pci->dev, budget->pt.slist,
+ budget->pt.nents, DMA_FROM_DEVICE);
#if 0
/* track rps1 activity */
@@ -2637,7 +2638,8 @@ static int av7110_attach(struct saa7146_dev* dev,
av7110->arm_thread = NULL;
/* allocate and init buffers */
- av7110->debi_virt = pci_alloc_consistent(pdev, 8192, &av7110->debi_bus);
+ av7110->debi_virt = dma_alloc_coherent(&pdev->dev, 8192,
+ &av7110->debi_bus, GFP_KERNEL);
if (!av7110->debi_virt)
goto err_saa71466_vfree_4;
@@ -2726,7 +2728,8 @@ static int av7110_attach(struct saa7146_dev* dev,
err_iobuf_vfree_6:
vfree(av7110->iobuf);
err_pci_free_5:
- pci_free_consistent(pdev, 8192, av7110->debi_virt, av7110->debi_bus);
+ dma_free_coherent(&pdev->dev, 8192, av7110->debi_virt,
+ av7110->debi_bus);
err_saa71466_vfree_4:
if (av7110->grabbing)
saa7146_vfree_destroy_pgtable(pdev, av7110->grabbing, &av7110->pt);
@@ -2779,8 +2782,8 @@ static int av7110_detach(struct saa7146_dev* saa)
av7110_av_exit(av7110);
vfree(av7110->iobuf);
- pci_free_consistent(saa->pci, 8192, av7110->debi_virt,
- av7110->debi_bus);
+ dma_free_coherent(&saa->pci->dev, 8192, av7110->debi_virt,
+ av7110->debi_bus);
i2c_del_adapter(&av7110->i2c_adap);
--
2.27.0
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