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drm/radeon: add a way to get and set initial buffer domains v2

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When passing buffers between processes, the receiving process needs to know
the original buffer domain, so that it doesn't accidentally move the buffer.

v2: reserve the buffer

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Marek Olšák 2014-03-02 00:56:17 +01:00 • committed by Christian König
commit bda72d58a2
6 changed files with 57 additions and 1 deletions
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36
drivers/gpu/drm/radeon/radeon_gem.c
View file

@ -533,6 +533,42 @@ out:
return r;
}
int radeon_gem_op_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct drm_radeon_gem_op *args = data;
struct drm_gem_object *gobj;
struct radeon_bo *robj;
int r;
gobj = drm_gem_object_lookup(dev, filp, args->handle);
if (gobj == NULL) {
return -ENOENT;
}
robj = gem_to_radeon_bo(gobj);
r = radeon_bo_reserve(robj, false);
if (unlikely(r))
goto out;
switch (args->op) {
case RADEON_GEM_OP_GET_INITIAL_DOMAIN:
args->value = robj->initial_domain;
break;
case RADEON_GEM_OP_SET_INITIAL_DOMAIN:
robj->initial_domain = args->value & (RADEON_GEM_DOMAIN_VRAM |
RADEON_GEM_DOMAIN_GTT |
RADEON_GEM_DOMAIN_CPU);
break;
default:
r = -EINVAL;
}
radeon_bo_unreserve(robj);
out:
drm_gem_object_unreference_unlocked(gobj);
return r;
}
int radeon_mode_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args)