[V1] media: mtk-mdp3: Add Mediatek MDP3 Driver
moudy.ho
moudy.ho at mediatek.com
Thu Jun 16 00:21:50 PDT 2022
On Wed, 2022-06-15 at 23:16 +0300, Laurent Pinchart wrote:
> On Wed, Jun 15, 2022 at 03:55:14PM -0400, Nicolas Dufresne wrote:
> > Le mercredi 23 juin 2021 à 17:14 +0800, Moudy Ho a écrit :
> > > From: mtk18742 <moudy.ho at mediatek.com>
> > >
> > > Add MDP3 driver for MT8183
> > >
> > > Signed-off-by: Moudy Ho <moudy.ho at mediatek.com>
> > > ---
> > > drivers/media/platform/Kconfig | 17 +
> > > drivers/media/platform/Makefile | 2 +
> > > drivers/media/platform/mtk-mdp3/Makefile | 9 +
> > > drivers/media/platform/mtk-mdp3/isp_reg.h | 37 +
> > > .../media/platform/mtk-mdp3/mdp-platform.h | 58 +
> > > .../media/platform/mtk-mdp3/mdp_reg_ccorr.h | 75 +
> > > .../media/platform/mtk-mdp3/mdp_reg_rdma.h | 206 +++
> > > drivers/media/platform/mtk-mdp3/mdp_reg_rsz.h | 109 ++
> > > .../media/platform/mtk-mdp3/mdp_reg_wdma.h | 125 ++
> > > .../media/platform/mtk-mdp3/mdp_reg_wrot.h | 115 ++
> > > .../media/platform/mtk-mdp3/mmsys_config.h | 188 +++
> > > drivers/media/platform/mtk-mdp3/mmsys_mutex.h | 35 +
> > > .../media/platform/mtk-mdp3/mmsys_reg_base.h | 38 +
> > > drivers/media/platform/mtk-mdp3/mtk-img-ipi.h | 282 ++++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-cmdq.c | 538 ++++++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-cmdq.h | 53 +
> > > .../media/platform/mtk-mdp3/mtk-mdp3-comp.c | 1437
> > > +++++++++++++++++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-comp.h | 157 ++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-core.c | 266 +++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-core.h | 86 +
> > > .../media/platform/mtk-mdp3/mtk-mdp3-debug.c | 973 +++++++++++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-debug.h | 39 +
> > > .../media/platform/mtk-mdp3/mtk-mdp3-m2m.c | 803 +++++++++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-m2m.h | 42 +
> > > .../media/platform/mtk-mdp3/mtk-mdp3-regs.c | 748 +++++++++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-regs.h | 373 +++++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-vpu.c | 313 ++++
> > > .../media/platform/mtk-mdp3/mtk-mdp3-vpu.h | 79 +
> > > 28 files changed, 7203 insertions(+)
> > > create mode 100644 drivers/media/platform/mtk-mdp3/Makefile
> > > create mode 100644 drivers/media/platform/mtk-mdp3/isp_reg.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mdp-
> > > platform.h
> > > create mode 100644 drivers/media/platform/mtk-
> > > mdp3/mdp_reg_ccorr.h
> > > create mode 100644 drivers/media/platform/mtk-
> > > mdp3/mdp_reg_rdma.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_rsz.h
> > > create mode 100644 drivers/media/platform/mtk-
> > > mdp3/mdp_reg_wdma.h
> > > create mode 100644 drivers/media/platform/mtk-
> > > mdp3/mdp_reg_wrot.h
> > > create mode 100644 drivers/media/platform/mtk-
> > > mdp3/mmsys_config.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mmsys_mutex.h
> > > create mode 100644 drivers/media/platform/mtk-
> > > mdp3/mmsys_reg_base.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-img-ipi.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > cmdq.c
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > cmdq.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > comp.c
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > comp.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > core.c
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > core.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > debug.c
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > debug.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > m2m.c
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > m2m.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > regs.c
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > regs.h
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > vpu.c
> > > create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-
> > > vpu.h
>
> [snip]
>
> > > diff --git a/drivers/media/platform/mtk-mdp3/mtk-mdp3-regs.c
> > > b/drivers/media/platform/mtk-mdp3/mtk-mdp3-regs.c
> > > new file mode 100644
> > > index 000000000000..0c4c942b5f9c
> > > --- /dev/null
> > > +++ b/drivers/media/platform/mtk-mdp3/mtk-mdp3-regs.c
> > > @@ -0,0 +1,748 @@
>
> [snip]
>
> > > +static void mdp_prepare_buffer(struct img_image_buffer *b,
> > > + struct mdp_frame *frame, struct
> > > vb2_buffer *vb)
> > > +{
> > > + struct v4l2_pix_format_mplane *pix_mp = &frame-
> > > >format.fmt.pix_mp;
> > > + unsigned int i;
> > > +
> > > + b->format.colorformat = frame->mdp_fmt->mdp_color;
> > > + b->format.ycbcr_prof = frame->ycbcr_prof;
> > > + for (i = 0; i < pix_mp->num_planes; ++i) {
> > > + u32 stride = mdp_fmt_get_stride(frame->mdp_fmt,
> > > + pix_mp->plane_fmt[i].bytesperline, i);
> > > +
> > > + b->format.plane_fmt[i].stride = stride;
> > > + /*
> > > + * TODO(crbug.com/901264): The way to pass an offset
> > > within a
> > > + * DMA-buf is not defined in V4L2 specification, so we
> > > abuse
> > > + * data_offset for now. Fix it when we have the right
> > > interface,
> > > + * including any necessary validation and potential
> > > alignment
> > > + * issues.
> > > + */
> > > + b->format.plane_fmt[i].size =
> > > + mdp_fmt_get_plane_size(frame->mdp_fmt, stride,
> > > + pix_mp->height, i) -
> > > + vb-
> > > >planes[i].data_offset;
> > > + b->iova[i] = vb2_dma_contig_plane_dma_addr(vb, i) +
> > > + vb->planes[i].data_offset;
> >
> > As the comment says, data_offset is not valdiated at all for
> > capture devices and
> > is only validated so that (length - data_offset > 0) for OUTPUT
> > devices. So this
> > is going out of spec and leave the door open for buffer overflow
> > triggered by
> > users.
>
> And as documented by the TODO comment, it's clearly an API abuse.
> This
> can't go in as-is, we need to revive the v4l2_buffer extended API
> that
> Boris used to work on.
>
Hi,
This is a hacking patch for a non-standard format which is only used in
special purpose with ISP.
Sorry for the inconvenience, this section will be removed.
Thanks,
Moudy
> > > + }
> > > + for (; i < MDP_COLOR_GET_PLANE_COUNT(b->format.colorformat);
> > > ++i) {
> > > + u32 stride = mdp_fmt_get_stride_contig(frame->mdp_fmt,
> > > + b->format.plane_fmt[0].stride, i);
> > > +
> > > + b->format.plane_fmt[i].stride = stride;
> > > + b->format.plane_fmt[i].size =
> > > + mdp_fmt_get_plane_size(frame->mdp_fmt, stride,
> > > + pix_mp->height, i);
> > > + b->iova[i] = b->iova[i - 1] + b->format.plane_fmt[i -
> > > 1].size;
> > > + }
> > > + b->usage = frame->usage;
> > > +}
>
>
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