On Thu, Jun 24, 2021 at 1:29 PM Thomas Hellström
<thomas.hellstrom@xxxxxxxxxxxxxxx> wrote:
>
> Reinstate the mmap ioctl for all current integrated platforms.
> The intention was really to have it disabled for discrete graphics
> where we enforce a single mmap mode.
>
> Fixes: 35cbd91eb541 ("drm/i915: Disable mmap ioctl for gen12+")
> Signed-off-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
> Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
> v2:
> - Added a R-B.
> - Fixed up the code comment a bit.
> ---
> drivers/gpu/drm/i915/gem/i915_gem_mman.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
> index 2fd155742bd2..4f50a508c7a0 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
> @@ -62,10 +62,11 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
> struct drm_i915_gem_object *obj;
> unsigned long addr;
>
> - /* mmap ioctl is disallowed for all platforms after TGL-LP. This also
> - * covers all platforms with local memory.
> + /*
> + * mmap ioctl is disallowed for all discrete platforms,
> + * and for all platforms with GRAPHICS_VER > 12.
> */
> - if (GRAPHICS_VER(i915) >= 12 && !IS_TIGERLAKE(i915))
> + if (IS_DGFX(i915) || GRAPHICS_VER(i915) > 12)
> return -EOPNOTSUPP;
>
> if (args->flags & ~(I915_MMAP_WC))
> --
> 2.31.1
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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