Re: [PATCH] drm/radeon: switch from 'pci_' to 'dma_' API

From: Alex Deucher <alexdeucher@gmail.com>
To: "Christian König" <christian.koenig@amd.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
	"Deucher, Alexander" <alexander.deucher@amd.com>,
	xinhui pan <Xinhui.Pan@amd.com>, Dave Airlie <airlied@linux.ie>,
	Daniel Vetter <daniel@ffwll.ch>,
	amd-gfx list <amd-gfx@lists.freedesktop.org>,
	Maling list - DRI developers  <dri-devel@lists.freedesktop.org>,
	LKML <linux-kernel@vger.kernel.org>,
	kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] drm/radeon: switch from 'pci_' to 'dma_' API
Date: Mon, 23 Aug 2021 13:53:38 -0400	[thread overview]
Message-ID: <CADnq5_NU=DKqiHURbB70No94wi-qz7YbwA11_18DbCXPfxWzLQ@mail.gmail.com> (raw)
In-Reply-To: <cd7b5eb2-24c1-d54d-d6dd-c529d3eb140f@amd.com>

Applied.  Thanks!

Alex

On Mon, Aug 23, 2021 at 2:17 AM Christian König
<christian.koenig@amd.com> wrote:
>
> Am 22.08.21 um 23:23 schrieb 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 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>
>
> Reviewed-by: Christian König <christian.koenig@amd.com>
>
> Should we pick them up or do you want to push them upstream?
>
> Regards,
> Christian.
>
> > ---
> > If needed, see post from Christoph Hellwig on the kernel-janitors ML:
> >     https://marc.info/?l=kernel-janitors&m=158745678307186&w=4
> > ---
> >   drivers/gpu/drm/radeon/radeon_device.c | 6 +++---
> >   1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
> > index ac8c3251b616..4f0fbf667431 100644
> > --- a/drivers/gpu/drm/radeon/radeon_device.c
> > +++ b/drivers/gpu/drm/radeon/radeon_device.c
> > @@ -785,7 +785,7 @@ int radeon_dummy_page_init(struct radeon_device *rdev)
> >       if (rdev->dummy_page.page == NULL)
> >               return -ENOMEM;
> >       rdev->dummy_page.addr = dma_map_page(&rdev->pdev->dev, rdev->dummy_page.page,
> > -                                     0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
> > +                                     0, PAGE_SIZE, DMA_BIDIRECTIONAL);
> >       if (dma_mapping_error(&rdev->pdev->dev, rdev->dummy_page.addr)) {
> >               dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
> >               __free_page(rdev->dummy_page.page);
> > @@ -808,8 +808,8 @@ void radeon_dummy_page_fini(struct radeon_device *rdev)
> >   {
> >       if (rdev->dummy_page.page == NULL)
> >               return;
> > -     pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
> > -                     PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
> > +     dma_unmap_page(&rdev->pdev->dev, rdev->dummy_page.addr, PAGE_SIZE,
> > +                    DMA_BIDIRECTIONAL);
> >       __free_page(rdev->dummy_page.page);
> >       rdev->dummy_page.page = NULL;
> >   }
>