No reason for sticking to GTT mmaps now we have CPU WC mmaps via
our new mmap offset plumbing.

Signed-off-by: Abdiel Janulgue <[email protected]>
Cc: Matthew Auld <[email protected]>
---
 drivers/gpu/drm/i915/gem/i915_gem_mman.c | 10 ++++++++++
 drivers/gpu/drm/i915/i915_drv.c          |  1 +
 drivers/gpu/drm/i915/i915_drv.h          |  2 ++
 3 files changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c 
b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
index a3eb194fd3b4..8e2919832483 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
@@ -566,6 +566,16 @@ static int gem_mmap_offset(struct drm_device *dev, void 
*data,
                                             &args->offset);
 }
 
+int
+i915_gem_mmap_dumb(struct drm_file *file,
+                 struct drm_device *dev,
+                 u32 handle,
+                 u64 *offset)
+{
+       return __assign_gem_object_mmap_data(file, handle, I915_MMAP_TYPE_WC,
+                                            offset);
+}
+
 /**
  * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing
  * @dev: DRM device
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index ead2e6ca7907..2157bc961e1f 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -2752,6 +2752,7 @@ static struct drm_driver driver = {
        .get_scanout_position = i915_get_crtc_scanoutpos,
 
        .dumb_create = i915_gem_dumb_create,
+       .dumb_map_offset = i915_gem_mmap_dumb,
        .ioctls = i915_ioctls,
        .num_ioctls = ARRAY_SIZE(i915_ioctls),
        .fops = &i915_driver_fops,
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a407ca62888b..800674d167a5 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1934,6 +1934,8 @@ i915_mutex_lock_interruptible(struct drm_device *dev)
 int i915_gem_dumb_create(struct drm_file *file_priv,
                         struct drm_device *dev,
                         struct drm_mode_create_dumb *args);
+int i915_gem_mmap_dumb(struct drm_file *file_priv, struct drm_device *dev,
+                     u32 handle, u64 *offset);
 int i915_gem_mmap_gtt_version(void);
 
 int __must_check i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno);
-- 
2.23.0

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