216 static void ism_free_dmb(struct ism_dev *ism, struct smcd_dmb *dmb)  in ism_free_dmb()  argument
218 	clear_bit(dmb->sba_idx, ism->sba_bitmap);  in ism_free_dmb()
219 	dma_free_coherent(&ism->pdev->dev, dmb->dmb_len,  in ism_free_dmb()
220 			  dmb->cpu_addr, dmb->dma_addr);  in ism_free_dmb()
223 static int ism_alloc_dmb(struct ism_dev *ism, struct smcd_dmb *dmb)  in ism_alloc_dmb()  argument
227 	if (PAGE_ALIGN(dmb->dmb_len) > dma_get_max_seg_size(&ism->pdev->dev))  in ism_alloc_dmb()
230 	if (!dmb->sba_idx) {  in ism_alloc_dmb()
236 		dmb->sba_idx = bit;  in ism_alloc_dmb()
238 	if (dmb->sba_idx < ISM_DMB_BIT_OFFSET ||  in ism_alloc_dmb()
239 	    test_and_set_bit(dmb->sba_idx, ism->sba_bitmap))  in ism_alloc_dmb()
242 	dmb->cpu_addr = dma_alloc_coherent(&ism->pdev->dev, dmb->dmb_len,  in ism_alloc_dmb()
243 					   &dmb->dma_addr,  in ism_alloc_dmb()
245 	if (!dmb->cpu_addr)  in ism_alloc_dmb()
246 		clear_bit(dmb->sba_idx, ism->sba_bitmap);  in ism_alloc_dmb()
248 	return dmb->cpu_addr ? 0 : -ENOMEM;  in ism_alloc_dmb()
251 static int ism_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)  in ism_register_dmb()  argument
257 	ret = ism_alloc_dmb(ism, dmb);  in ism_register_dmb()
265 	cmd.request.dmb = dmb->dma_addr;  in ism_register_dmb()
266 	cmd.request.dmb_len = dmb->dmb_len;  in ism_register_dmb()
267 	cmd.request.sba_idx = dmb->sba_idx;  in ism_register_dmb()
268 	cmd.request.vlan_valid = dmb->vlan_valid;  in ism_register_dmb()
269 	cmd.request.vlan_id = dmb->vlan_id;  in ism_register_dmb()
270 	cmd.request.rgid = dmb->rgid;  in ism_register_dmb()
274 		ism_free_dmb(ism, dmb);  in ism_register_dmb()
277 	dmb->dmb_tok = cmd.response.dmb_tok;  in ism_register_dmb()
282 static int ism_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)  in ism_unregister_dmb()  argument
292 	cmd.request.dmb_tok = dmb->dmb_tok;  in ism_unregister_dmb()
298 	ism_free_dmb(ism, dmb);  in ism_unregister_dmb()