On Tue, 25 Nov 2014, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > This reverts commit c211a47c2c28562f8a3fff9e027be1a3ed9e154a. > > This causes an unwarranteed API break for existing and active userspace. Ville had an interesting observation regarding the commit being reverted: https://bugs.freedesktop.org/show_bug.cgi?id=86679#c9 BR, Jani. > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/i915_gem.c | 90 +++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 90 insertions(+) > > diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c > index 614bc2bc16fe..4a1ca7abd7f9 100644 > --- a/drivers/gpu/drm/i915/i915_gem.c > +++ b/drivers/gpu/drm/i915/i915_gem.c > @@ -4252,6 +4252,96 @@ i915_gem_object_unpin_fence(struct drm_i915_gem_object *obj) > } > > int > +i915_gem_pin_ioctl(struct drm_device *dev, void *data, > + struct drm_file *file) > +{ > + struct drm_i915_gem_pin *args = data; > + struct drm_i915_gem_object *obj; > + int ret; > + > + ret = i915_mutex_lock_interruptible(dev); > + if (ret) > + return ret; > + > + obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); > + if (&obj->base == NULL) { > + ret = -ENOENT; > + goto unlock; > + } > + > + if (obj->madv != I915_MADV_WILLNEED) { > + DRM_DEBUG("Attempting to pin a purgeable buffer\n"); > + ret = -EFAULT; > + goto out; > + } > + > + if (obj->pin_filp != NULL && obj->pin_filp != file) { > + DRM_DEBUG("Already pinned in i915_gem_pin_ioctl(): %d\n", > + args->handle); > + ret = -EINVAL; > + goto out; > + } > + > + if (obj->user_pin_count == ULONG_MAX) { > + ret = -EBUSY; > + goto out; > + } > + > + if (obj->user_pin_count == 0) { > + ret = i915_gem_obj_ggtt_pin(obj, args->alignment, PIN_MAPPABLE); > + if (ret) > + goto out; > + } > + > + obj->user_pin_count++; > + obj->pin_filp = file; > + > + args->offset = i915_gem_obj_ggtt_offset(obj); > +out: > + drm_gem_object_unreference(&obj->base); > +unlock: > + mutex_unlock(&dev->struct_mutex); > + return ret; > +} > + > +int > +i915_gem_unpin_ioctl(struct drm_device *dev, void *data, > + struct drm_file *file) > +{ > + struct drm_i915_gem_pin *args = data; > + struct drm_i915_gem_object *obj; > + int ret; > + > + ret = i915_mutex_lock_interruptible(dev); > + if (ret) > + return ret; > + > + obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); > + if (&obj->base == NULL) { > + ret = -ENOENT; > + goto unlock; > + } > + > + if (obj->pin_filp != file) { > + DRM_DEBUG("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", > + args->handle); > + ret = -EINVAL; > + goto out; > + } > + obj->user_pin_count--; > + if (obj->user_pin_count == 0) { > + obj->pin_filp = NULL; > + i915_gem_object_ggtt_unpin(obj); > + } > + > +out: > + drm_gem_object_unreference(&obj->base); > +unlock: > + mutex_unlock(&dev->struct_mutex); > + return ret; > +} > + > +int > i915_gem_busy_ioctl(struct drm_device *dev, void *data, > struct drm_file *file) > { > -- > 2.1.3 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
