218 static void ism_free_dmb(struct ism_dev *ism, struct smcd_dmb *dmb)  in ism_free_dmb()  argument
220 	clear_bit(dmb->sba_idx, ism->sba_bitmap);  in ism_free_dmb()
221 	dma_free_coherent(&ism->pdev->dev, dmb->dmb_len,  in ism_free_dmb()
222 			  dmb->cpu_addr, dmb->dma_addr);  in ism_free_dmb()
225 static int ism_alloc_dmb(struct ism_dev *ism, struct smcd_dmb *dmb)  in ism_alloc_dmb()  argument
229 	if (PAGE_ALIGN(dmb->dmb_len) > dma_get_max_seg_size(&ism->pdev->dev))  in ism_alloc_dmb()
232 	if (!dmb->sba_idx) {  in ism_alloc_dmb()
238 		dmb->sba_idx = bit;  in ism_alloc_dmb()
240 	if (dmb->sba_idx < ISM_DMB_BIT_OFFSET ||  in ism_alloc_dmb()
241 	    test_and_set_bit(dmb->sba_idx, ism->sba_bitmap))  in ism_alloc_dmb()
244 	dmb->cpu_addr = dma_alloc_coherent(&ism->pdev->dev, dmb->dmb_len,  in ism_alloc_dmb()
245 					   &dmb->dma_addr,  in ism_alloc_dmb()
247 	if (!dmb->cpu_addr)  in ism_alloc_dmb()
248 		clear_bit(dmb->sba_idx, ism->sba_bitmap);  in ism_alloc_dmb()
250 	return dmb->cpu_addr ? 0 : -ENOMEM;  in ism_alloc_dmb()
253 static int ism_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)  in ism_register_dmb()  argument
259 	ret = ism_alloc_dmb(ism, dmb);  in ism_register_dmb()
267 	cmd.request.dmb = dmb->dma_addr;  in ism_register_dmb()
268 	cmd.request.dmb_len = dmb->dmb_len;  in ism_register_dmb()
269 	cmd.request.sba_idx = dmb->sba_idx;  in ism_register_dmb()
270 	cmd.request.vlan_valid = dmb->vlan_valid;  in ism_register_dmb()
271 	cmd.request.vlan_id = dmb->vlan_id;  in ism_register_dmb()
272 	cmd.request.rgid = dmb->rgid;  in ism_register_dmb()
276 		ism_free_dmb(ism, dmb);  in ism_register_dmb()
279 	dmb->dmb_tok = cmd.response.dmb_tok;  in ism_register_dmb()
284 static int ism_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)  in ism_unregister_dmb()  argument
294 	cmd.request.dmb_tok = dmb->dmb_tok;  in ism_unregister_dmb()
300 	ism_free_dmb(ism, dmb);  in ism_unregister_dmb()