Re: [PATCH 08/15] drm/i810: drop device_is_agp callback

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On Wed, Jan 25, 2017 at 1:26 AM, Daniel Vetter <daniel.vetter@xxxxxxxx> wrote:
> Use the same trick we used for i915 when we still had ums support:
> Just initialize the agp support unconditionally in the driver load
> function.
>
> Unfortunately that means we need to export drm_agp_init again, but I
> think that's a lesser evil.
>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>

Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>

> ---
>  drivers/gpu/drm/drm_agpsupport.c |  2 ++
>  drivers/gpu/drm/i810/i810_dma.c  | 24 ++++++++----------------
>  drivers/gpu/drm/i810/i810_drv.c  |  1 -
>  drivers/gpu/drm/i810/i810_drv.h  |  1 -
>  4 files changed, 10 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_agpsupport.c b/drivers/gpu/drm/drm_agpsupport.c
> index d621c8a4cf00..c89953449e96 100644
> --- a/drivers/gpu/drm/drm_agpsupport.c
> +++ b/drivers/gpu/drm/drm_agpsupport.c
> @@ -421,6 +421,8 @@ struct drm_agp_head *drm_agp_init(struct drm_device *dev)
>         head->base = head->agp_info.aper_base;
>         return head;
>  }
> +/* Only exported for i810.ko */
> +EXPORT_SYMBOL(drm_agp_init);
>
>  /**
>   * drm_legacy_agp_clear - Clear AGP resource list
> diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c
> index ab4e6cbe1f8b..576a417690d4 100644
> --- a/drivers/gpu/drm/i810/i810_dma.c
> +++ b/drivers/gpu/drm/i810/i810_dma.c
> @@ -1190,6 +1190,14 @@ static int i810_flip_bufs(struct drm_device *dev, void *data,
>
>  int i810_driver_load(struct drm_device *dev, unsigned long flags)
>  {
> +       dev->agp = drm_agp_init(dev);
> +       if (dev->agp) {
> +               dev->agp->agp_mtrr = arch_phys_wc_add(
> +                       dev->agp->agp_info.aper_base,
> +                       dev->agp->agp_info.aper_size *
> +                       1024 * 1024);
> +       }
> +
>         /* Our userspace depends upon the agp mapping support. */
>         if (!dev->agp)
>                 return -EINVAL;
> @@ -1249,19 +1257,3 @@ const struct drm_ioctl_desc i810_ioctls[] = {
>  };
>
>  int i810_max_ioctl = ARRAY_SIZE(i810_ioctls);
> -
> -/**
> - * Determine if the device really is AGP or not.
> - *
> - * All Intel graphics chipsets are treated as AGP, even if they are really
> - * PCI-e.
> - *
> - * \param dev   The device to be tested.
> - *
> - * \returns
> - * A value of 1 is always retured to indictate every i810 is AGP.
> - */
> -int i810_driver_device_is_agp(struct drm_device *dev)
> -{
> -       return 1;
> -}
> diff --git a/drivers/gpu/drm/i810/i810_drv.c b/drivers/gpu/drm/i810/i810_drv.c
> index 02504a7cfaf2..37fd0906f807 100644
> --- a/drivers/gpu/drm/i810/i810_drv.c
> +++ b/drivers/gpu/drm/i810/i810_drv.c
> @@ -60,7 +60,6 @@ static struct drm_driver driver = {
>         .lastclose = i810_driver_lastclose,
>         .preclose = i810_driver_preclose,
>         .set_busid = drm_pci_set_busid,
> -       .device_is_agp = i810_driver_device_is_agp,
>         .dma_quiescent = i810_driver_dma_quiescent,
>         .ioctls = i810_ioctls,
>         .fops = &i810_driver_fops,
> diff --git a/drivers/gpu/drm/i810/i810_drv.h b/drivers/gpu/drm/i810/i810_drv.h
> index 93ec5dc4e7d3..c73d2f2da57b 100644
> --- a/drivers/gpu/drm/i810/i810_drv.h
> +++ b/drivers/gpu/drm/i810/i810_drv.h
> @@ -124,7 +124,6 @@ extern int i810_driver_load(struct drm_device *, unsigned long flags);
>  extern void i810_driver_lastclose(struct drm_device *dev);
>  extern void i810_driver_preclose(struct drm_device *dev,
>                                  struct drm_file *file_priv);
> -extern int i810_driver_device_is_agp(struct drm_device *dev);
>
>  extern long i810_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
>  extern const struct drm_ioctl_desc i810_ioctls[];
> --
> 2.11.0
>
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