208 /* simple allocator to grab next 16 byte aligned memory from txn */
209 static void *alloc_dma(struct dmm_txn *txn, size_t sz, dma_addr_t *pa)  in alloc_dma()  argument
212 	struct refill_engine *engine = txn->engine_handle;  in alloc_dma()
215 	txn->current_pa = round_up(txn->current_pa, 16);  in alloc_dma()
216 	txn->current_va = (void *)round_up((long)txn->current_va, 16);  in alloc_dma()
218 	ptr = txn->current_va;  in alloc_dma()
219 	*pa = txn->current_pa;  in alloc_dma()
221 	txn->current_pa += sz;  in alloc_dma()
222 	txn->current_va += sz;  in alloc_dma()
224 	BUG_ON((txn->current_va - engine->refill_va) > REFILL_BUFFER_SIZE);  in alloc_dma()
307 	struct dmm_txn *txn = NULL;  in dmm_txn_init()  local
330 	txn = &engine->txn;  in dmm_txn_init()
332 	txn->engine_handle = engine;  in dmm_txn_init()
333 	txn->last_pat = NULL;  in dmm_txn_init()
334 	txn->current_va = engine->refill_va;  in dmm_txn_init()
335 	txn->current_pa = engine->refill_pa;  in dmm_txn_init()
337 	return txn;  in dmm_txn_init()
344 static void dmm_txn_append(struct dmm_txn *txn, struct pat_area *area,  in dmm_txn_append()  argument
350 	struct refill_engine *engine = txn->engine_handle;  in dmm_txn_append()
355 	pat = alloc_dma(txn, sizeof(*pat), &pat_pa);  in dmm_txn_append()
357 	if (txn->last_pat)  in dmm_txn_append()
358 		txn->last_pat->next_pa = (u32)pat_pa;  in dmm_txn_append()
371 	data = alloc_dma(txn, 4*i, &data_pa);  in dmm_txn_append()
383 	txn->last_pat = pat;  in dmm_txn_append()
391 static int dmm_txn_commit(struct dmm_txn *txn, bool wait)  in dmm_txn_commit()  argument
394 	struct refill_engine *engine = txn->engine_handle;  in dmm_txn_commit()
397 	if (!txn->last_pat) {  in dmm_txn_commit()
398 		dev_err(engine->dmm->dev, "need at least one txn\n");  in dmm_txn_commit()
403 	txn->last_pat->next_pa = 0;  in dmm_txn_commit()
414 	readl(&txn->last_pat->next_pa);  in dmm_txn_commit()
464 	struct dmm_txn *txn;  in fill()  local
481 	txn = dmm_txn_init(omap_dmm, area->tcm);  in fill()
482 	if (IS_ERR_OR_NULL(txn))  in fill()
491 		dmm_txn_append(txn, &p_area, pages, npages, roll);  in fill()
496 	ret = dmm_txn_commit(txn, wait);  in fill()