On 28/06/2021 10:21, Thomas Hellström 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.
This fixes media on rkl/adl.
v2:
- Added a R-B.
- Fixed up the code comment a bit.
v3:
- Added an A-B.
- Point out in the commit message that there was an issue with media on
rkl/adl.
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>
I already pushed v2 of this last week with the following amended:
"This was reported to break ADL-P with the media stack, which was not
the intention. Although longer term we do still plan to sunset this
ioctl even for integrated, in favour of using mmap_offset instead."
---
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 6497a2dbdab9..a90f796e85c0 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))
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