[PATCH 2/3] drm: export gem dmabuf_ops for drivers to reuse

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On Tue, Jan 09, 2018 at 01:13:08PM -0500, Alex Deucher wrote:
> On Tue, Jan 9, 2018 at 10:56 AM, Deucher, Alexander
> <Alexander.Deucher at amd.com> wrote:
> > I'll can push this and a few other misc patches today.
> >
> 
> Pushed to drm-misc-next.

One thing I just noticed: Some kerneldoc for the newly exported functions
and maybe a small update to the intro section to explain what to do with
this would be neat.
-Daniel

> 
> Thanks,
> 
> Alex
> 
> 
> >
> > Alex
> > ________________________________
> > From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Li,
> > Samuel <Samuel.Li at amd.com>
> > Sent: Tuesday, January 9, 2018 10:20 AM
> > To: Daniel Vetter; Koenig, Christian
> > Cc: amd-gfx at lists.freedesktop.org; dri-devel at lists.freedesktop.org
> > Subject: RE: [PATCH 2/3] drm: export gem dmabuf_ops for drivers to reuse
> >
> > Yes, please hush this for me.
> >
> > Regards,
> > Samuel Li
> >
> >
> >> -----Original Message-----
> >> From: Daniel Vetter [mailto:daniel.vetter at ffwll.ch] On Behalf Of Daniel
> >> Vetter
> >> Sent: Tuesday, January 09, 2018 4:22 AM
> >> To: Koenig, Christian <Christian.Koenig at amd.com>
> >> Cc: Li, Samuel <Samuel.Li at amd.com>; dri-devel at lists.freedesktop.org; amd-
> >> gfx at lists.freedesktop.org
> >> Subject: Re: [PATCH 2/3] drm: export gem dmabuf_ops for drivers to reuse
> >>
> >> On Fri, Jan 05, 2018 at 10:16:04AM +0100, Christian König wrote:
> >> > Am 04.01.2018 um 22:12 schrieb Samuel Li:
> >> > > Change-Id: I03c22a890d2305f3243d88019d1a28bddd4ddda7
> >> > > Signed-off-by: Samuel Li <Samuel.Li at amd.com>
> >> >
> >> > Reviewed-by: Christian König <christian.koenig at amd.com>
> >>
> >> Want to push to drm-misc or some other plan with this?
> >> -Daniel
> >>
> >> >
> >> > > ---
> >> > >   drivers/gpu/drm/drm_prime.c | 53 ++++++++++++++++++++++++++---
> >> ----------------
> >> > >   include/drm/drm_prime.h     | 22 +++++++++++++++++++
> >> > >   2 files changed, 53 insertions(+), 22 deletions(-)
> >> > >
> >> > > diff --git a/drivers/gpu/drm/drm_prime.c
> >> > > b/drivers/gpu/drm/drm_prime.c index 8de93a2..68a69e9 100644
> >> > > --- a/drivers/gpu/drm/drm_prime.c
> >> > > +++ b/drivers/gpu/drm/drm_prime.c
> >> > > @@ -180,9 +180,8 @@ static int drm_prime_lookup_buf_handle(struct
> >> drm_prime_file_private *prime_fpri
> >> > >    return -ENOENT;
> >> > >   }
> >> > > -static int drm_gem_map_attach(struct dma_buf *dma_buf,
> >> > > -                       struct device *target_dev,
> >> > > -                       struct dma_buf_attachment *attach)
> >> > > +int drm_gem_map_attach(struct dma_buf *dma_buf, struct device
> >> *target_dev,
> >> > > +                struct dma_buf_attachment *attach)
> >> > >   {
> >> > >    struct drm_prime_attachment *prime_attach;
> >> > >    struct drm_gem_object *obj = dma_buf->priv; @@ -200,9 +199,10
> >> @@
> >> > > static int drm_gem_map_attach(struct dma_buf *dma_buf,
> >> > >    return dev->driver->gem_prime_pin(obj);
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_map_attach);
> >> > > -static void drm_gem_map_detach(struct dma_buf *dma_buf,
> >> > > -                        struct dma_buf_attachment *attach)
> >> > > +void drm_gem_map_detach(struct dma_buf *dma_buf,
> >> > > +                 struct dma_buf_attachment *attach)
> >> > >   {
> >> > >    struct drm_prime_attachment *prime_attach = attach->priv;
> >> > >    struct drm_gem_object *obj = dma_buf->priv; @@ -227,6 +227,7
> >> @@
> >> > > static void drm_gem_map_detach(struct dma_buf *dma_buf,
> >> > >    kfree(prime_attach);
> >> > >    attach->priv = NULL;
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_map_detach);
> >> > >   void drm_prime_remove_buf_handle_locked(struct
> >> drm_prime_file_private *prime_fpriv,
> >> > >                                    struct dma_buf *dma_buf)
> >> > > @@ -253,8 +254,8 @@ void
> >> drm_prime_remove_buf_handle_locked(struct drm_prime_file_private
> >> *prime_fpr
> >> > >    }
> >> > >   }
> >> > > -static struct sg_table *drm_gem_map_dma_buf(struct
> >> dma_buf_attachment *attach,
> >> > > -                                     enum dma_data_direction dir)
> >> > > +struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment
> >> *attach,
> >> > > +                              enum dma_data_direction dir)
> >> > >   {
> >> > >    struct drm_prime_attachment *prime_attach = attach->priv;
> >> > >    struct drm_gem_object *obj = attach->dmabuf->priv; @@ -289,13
> >> > > +290,15 @@ static struct sg_table *drm_gem_map_dma_buf(struct
> >> dma_buf_attachment *attach,
> >> > >    return sgt;
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_map_dma_buf);
> >> > > -static void drm_gem_unmap_dma_buf(struct dma_buf_attachment
> >> *attach,
> >> > > -                           struct sg_table *sgt,
> >> > > -                           enum dma_data_direction dir)
> >> > > +void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
> >> > > +                    struct sg_table *sgt,
> >> > > +                    enum dma_data_direction dir)
> >> > >   {
> >> > >    /* nothing to be done here */
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_unmap_dma_buf);
> >> > >   /**
> >> > >    * drm_gem_dmabuf_export - dma_buf export implementation for
> >> GEM
> >> > > @@ -346,47 +349,52 @@ void drm_gem_dmabuf_release(struct
> >> dma_buf *dma_buf)
> >> > >   }
> >> > >   EXPORT_SYMBOL(drm_gem_dmabuf_release);
> >> > > -static void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)
> >> > > +void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)
> >> > >   {
> >> > >    struct drm_gem_object *obj = dma_buf->priv;
> >> > >    struct drm_device *dev = obj->dev;
> >> > >    return dev->driver->gem_prime_vmap(obj);
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_dmabuf_vmap);
> >> > > -static void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void
> >> > > *vaddr)
> >> > > +void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void
> >> *vaddr)
> >> > >   {
> >> > >    struct drm_gem_object *obj = dma_buf->priv;
> >> > >    struct drm_device *dev = obj->dev;
> >> > >    dev->driver->gem_prime_vunmap(obj, vaddr);
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);
> >> > > -static void *drm_gem_dmabuf_kmap_atomic(struct dma_buf
> >> *dma_buf,
> >> > > -                                 unsigned long page_num)
> >> > > +void *drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
> >> > > +                          unsigned long page_num)
> >> > >   {
> >> > >    return NULL;
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_dmabuf_kmap_atomic);
> >> > > -static void drm_gem_dmabuf_kunmap_atomic(struct dma_buf
> >> *dma_buf,
> >> > > -                                  unsigned long page_num, void *addr)
> >> > > +void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
> >> > > +                           unsigned long page_num, void *addr)
> >> > >   {
> >> > >   }
> >> > > -static void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf,
> >> > > -                          unsigned long page_num)
> >> > > +EXPORT_SYMBOL(drm_gem_dmabuf_kunmap_atomic);
> >> > > +
> >> > > +void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned
> >> long
> >> > > +page_num)
> >> > >   {
> >> > >    return NULL;
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_dmabuf_kmap);
> >> > > -static void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf,
> >> > > -                           unsigned long page_num, void *addr)
> >> > > +void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned
> >> long page_num,
> >> > > +                    void *addr)
> >> > >   {
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_dmabuf_kunmap);
> >> > > -static int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf,
> >> > > -                        struct vm_area_struct *vma)
> >> > > +int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct
> >> > > +vm_area_struct *vma)
> >> > >   {
> >> > >    struct drm_gem_object *obj = dma_buf->priv;
> >> > >    struct drm_device *dev = obj->dev; @@ -396,6 +404,7 @@ static int
> >> > > drm_gem_dmabuf_mmap(struct dma_buf *dma_buf,
> >> > >    return dev->driver->gem_prime_mmap(obj, vma);
> >> > >   }
> >> > > +EXPORT_SYMBOL(drm_gem_dmabuf_mmap);
> >> > >   static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
> >> > >    .attach = drm_gem_map_attach,
> >> > > diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h index
> >> > > 9cd9e36..4d5f5d6 100644
> >> > > --- a/include/drm/drm_prime.h
> >> > > +++ b/include/drm/drm_prime.h
> >> > > @@ -54,6 +54,9 @@ struct device;
> >> > >   struct dma_buf_export_info;
> >> > >   struct dma_buf;
> >> > > +struct dma_buf_attachment;
> >> > > +
> >> > > +enum dma_data_direction;
> >> > >   struct drm_device;
> >> > >   struct drm_gem_object;
> >> > > @@ -79,6 +82,25 @@ int drm_gem_prime_fd_to_handle(struct
> >> drm_device *dev,
> >> > >   struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev,
> >> > >                                  struct dma_buf_export_info
> >> > > *exp_info);
> >> > >   void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
> >> > > +int drm_gem_map_attach(struct dma_buf *dma_buf, struct device
> >> *target_dev,
> >> > > +                struct dma_buf_attachment *attach); void
> >> > > +drm_gem_map_detach(struct dma_buf *dma_buf,
> >> > > +                 struct dma_buf_attachment *attach); struct sg_table
> >> > > +*drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
> >> > > +                              enum dma_data_direction dir); void
> >> > > +drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
> >> > > +                    struct sg_table *sgt,
> >> > > +                    enum dma_data_direction dir); void
> >> > > +*drm_gem_dmabuf_vmap(struct dma_buf *dma_buf); void
> >> > > +drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr);
> >> void
> >> > > +*drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
> >> > > +                          unsigned long page_num);
> >> > > +void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
> >> > > +                           unsigned long page_num, void *addr); void
> >> > > +*drm_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long
> >> > > +page_num); void drm_gem_dmabuf_kunmap(struct dma_buf
> >> *dma_buf, unsigned long page_num,
> >> > > +                    void *addr);
> >> > > +int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct
> >> > > +vm_area_struct *vma);
> >> > >   int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct
> >> page **pages,
> >> > >                                 dma_addr_t *addrs, int max_pages);
> >> >
> >> > _______________________________________________
> >> > dri-devel mailing list
> >> > dri-devel at lists.freedesktop.org
> >> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> >>
> >> --
> >> Daniel Vetter
> >> Software Engineer, Intel Corporation
> >> http://blog.ffwll.ch
> > _______________________________________________
> > amd-gfx mailing list
> > amd-gfx at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
> >
> > _______________________________________________
> > amd-gfx mailing list
> > amd-gfx at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
> >

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch


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