diff options
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/drm_bo.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c index affee135..7f5088fb 100644 --- a/linux-core/drm_bo.c +++ b/linux-core/drm_bo.c @@ -507,11 +507,14 @@ static int drm_buffer_object_unmap(drm_file_t *priv, uint32_t handle) * Call struct-sem locked. */ -static void drm_buffer_user_object_unmap(drm_file_t *priv, drm_user_object_t *uo) +static void drm_buffer_user_object_unmap(drm_file_t *priv, drm_user_object_t *uo, + drm_ref_t action) { drm_device_t *dev = priv->head->dev; drm_buffer_object_t *bo = drm_user_object_entry(uo, drm_buffer_object_t, base); + BUG_ON(action != _DRM_REF_TYPE1); + if (atomic_dec_and_test(&bo->mapped)) { mutex_unlock(&dev->struct_mutex); mutex_lock(&bo->mutex); @@ -534,7 +537,7 @@ int drm_buffer_object_create(drm_file_t *priv, uint32_t ttm_handle, uint32_t mask, uint32_t hint, - void __user *user_pages, + unsigned long buffer_start, drm_buffer_object_t **buf_obj) { drm_device_t *dev = priv->head->dev; @@ -569,7 +572,7 @@ int drm_buffer_object_create(drm_file_t *priv, goto out_err; break; case drm_bo_type_user: - bo->user_pages = user_pages; + bo->user_pages = (void __user *)buffer_start; break; default: ret = -EINVAL; @@ -592,6 +595,27 @@ int drm_buffer_object_create(drm_file_t *priv, drm_free(bo, sizeof(*bo), DRM_MEM_BUFOBJ); return ret; } + +static int drm_bo_add_user_object(drm_file_t *priv, drm_buffer_object_t *bo, + int shareable) +{ + drm_device_t *dev = priv->head->dev; + int ret; + + mutex_lock(&dev->struct_mutex); + ret = drm_add_user_object(priv, &bo->base, shareable); + if (ret) + goto out; + + bo->base.remove = drm_bo_base_deref_locked; + bo->base.type = drm_buffer_type; + bo->base.ref_struct_locked = NULL; + bo->base.unref = drm_buffer_user_object_unmap; + + out: + mutex_unlock(&dev->struct_mutex); + return ret; +} @@ -610,6 +634,22 @@ int drm_bo_ioctl(DRM_IOCTL_ARGS) rep.ret = 0; rep.handled = 0; switch (req->op) { + case drm_bo_create: { + unsigned long buffer_start = drm_ul(req->buffer_start); + rep.ret = drm_buffer_object_create(priv, drm_ul(req->size), + req->type, req->arg_handle, + req->mask, req->hint, + buffer_start, + &entry); + if (rep.ret) + break; + + rep.ret = drm_bo_add_user_object(priv, entry, req->mask & + DRM_BO_FLAG_SHAREABLE); + if (rep.ret) + drm_bo_usage_deref_unlocked(dev, entry); + break; + } case drm_bo_unmap: rep.ret = drm_buffer_object_unmap(priv, req->handle); break; |