Lines Matching refs:attach

789  * @attach:    [in]    attachment which should be pinned
794 int dma_buf_pin(struct dma_buf_attachment *attach)
796     struct dma_buf *dmabuf = attach->dmabuf;
802         ret = dmabuf->ops->pin(attach);
811  * calls attach() of dma_buf_ops to allow device-specific attach functionality
812  * @dmabuf:        [in]    buffer to attach device to.
832     struct dma_buf_attachment *attach;
843     attach = kzalloc(sizeof(*attach), GFP_KERNEL);
844     if (!attach) {
848     attach->dev = dev;
849     attach->dmabuf = dmabuf;
851         attach->peer2peer = importer_ops->allow_peer2peer;
853     attach->importer_ops = importer_ops;
854     attach->importer_priv = importer_priv;
856     if (dmabuf->ops->attach) {
857         ret = dmabuf->ops->attach(dmabuf, attach);
863     list_add(&attach->node, &dmabuf->attachments);
870     if (dma_buf_attachment_is_dynamic(attach) != dma_buf_is_dynamic(dmabuf)) {
873         if (dma_buf_is_dynamic(attach->dmabuf)) {
874             dma_resv_lock(attach->dmabuf->resv, NULL);
875             ret = dma_buf_pin(attach);
881         sgt = dmabuf->ops->map_dma_buf(attach, DMA_BIDIRECTIONAL);
889         if (dma_buf_is_dynamic(attach->dmabuf)) {
890             dma_resv_unlock(attach->dmabuf->resv);
892         attach->sgt = sgt;
893         attach->dir = DMA_BIDIRECTIONAL;
896     return attach;
899     kfree(attach);
903     if (dma_buf_is_dynamic(attach->dmabuf)) {
904         dma_buf_unpin(attach);
908     if (dma_buf_is_dynamic(attach->dmabuf)) {
909         dma_resv_unlock(attach->dmabuf->resv);
912     dma_buf_detach(dmabuf, attach);
919  * @dmabuf:    [in]    buffer to attach device to.
935  * @attach:    [in]    attachment to be detached; is free'd after this call.
939 void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach)
941     if (WARN_ON(!dmabuf || !attach)) {
945     if (attach->sgt) {
946         if (dma_buf_is_dynamic(attach->dmabuf)) {
947             dma_resv_lock(attach->dmabuf->resv, NULL);
950         dmabuf->ops->unmap_dma_buf(attach, attach->sgt, attach->dir);
952         if (dma_buf_is_dynamic(attach->dmabuf)) {
953             dma_buf_unpin(attach);
954             dma_resv_unlock(attach->dmabuf->resv);
959     list_del(&attach->node);
962         dmabuf->ops->detach(dmabuf, attach);
965     kfree(attach);
972  * @attach:    [in]    attachment which should be unpinned
974 void dma_buf_unpin(struct dma_buf_attachment *attach)
976     struct dma_buf *dmabuf = attach->dmabuf;
981         dmabuf->ops->unpin(attach);
990  * @attach:    [in]    attachment whose scatterlist is to be returned
1001 struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach, enum dma_data_direction direction)
1008     if (WARN_ON(!attach || !attach->dmabuf)) {
1012     if (dma_buf_attachment_is_dynamic(attach)) {
1013         dma_resv_assert_held(attach->dmabuf->resv);
1016     if (attach->sgt) {
1021         if (attach->dir != direction && attach->dir != DMA_BIDIRECTIONAL) {
1025         return attach->sgt;
1028     if (dma_buf_is_dynamic(attach->dmabuf)) {
1029         dma_resv_assert_held(attach->dmabuf->resv);
1031             r = dma_buf_pin(attach);
1038     sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
1043     if (IS_ERR(sg_table) && dma_buf_is_dynamic(attach->dmabuf) && !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)) {
1044         dma_buf_unpin(attach);
1047     if (!IS_ERR(sg_table) && attach->dmabuf->ops->cache_sgt_mapping) {
1048         attach->sgt = sg_table;
1049         attach->dir = direction;
1060  * @attach:    [in]    attachment to unmap buffer from
1066 void dma_buf_unmap_attachment(struct dma_buf_attachment *attach, struct sg_table *sg_table,
1071     if (WARN_ON(!attach || !attach->dmabuf || !sg_table)) {
1075     if (dma_buf_attachment_is_dynamic(attach)) {
1076         dma_resv_assert_held(attach->dmabuf->resv);
1079     if (attach->sgt == sg_table) {
1083     if (dma_buf_is_dynamic(attach->dmabuf)) {
1084         dma_resv_assert_held(attach->dmabuf->resv);
1087     attach->dmabuf->ops->unmap_dma_buf(attach, sg_table, direction);
1089     if (dma_buf_is_dynamic(attach->dmabuf) && !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)) {
1090         dma_buf_unpin(attach);
1105     struct dma_buf_attachment *attach;
1109     list_for_each_entry(attach, &dmabuf->attachments, node) if (attach->importer_ops)
1110         attach->importer_ops->move_notify(attach);