crypto/stm32/stm32-hash.c

162 	struct scatterlist	*sg;
358 		count = min(rctx->sg->length - rctx->offset, rctx->total);
362 			if ((rctx->sg->length == 0) && !sg_is_last(rctx->sg)) {
363 				rctx->sg = sg_next(rctx->sg);
371 					 rctx->sg, rctx->offset, count, 0);
377 		if (rctx->offset == rctx->sg->length) {
378 			rctx->sg = sg_next(rctx->sg);
379 			if (rctx->sg)
520 			       struct scatterlist *sg, int length, int mdmat)
533 	in_desc = dmaengine_prep_slave_sg(hdev->dma_lch, sg, 1,
660 	struct scatterlist sg[1], *tsg;
682 	for_each_sg(rctx->sg, tsg, rctx->nents, i) {
683 		sg[0] = *tsg;
684 		len = sg->length;
686 		if (sg_is_last(sg) || (bufcnt + sg[0].length) >= rctx->total) {
690 				sg_pcopy_to_buffer(rctx->sg, rctx->nents, &last_word, 4, len);
691 				sg->length -= sizeof(u32);
697 				sg->length = rctx->total - bufcnt;
699 					len = (ALIGN(sg->length, 16) - 16);
701 					ncp = sg_pcopy_to_buffer(rctx->sg, rctx->nents,
703 								 sg->length - len,
704 								 rctx->total - sg->length + len);
709 					sg->length = len;
712 					if (!(IS_ALIGNED(sg->length, sizeof(u32)))) {
713 						len = sg->length;
714 						sg->length = ALIGN(sg->length,
721 		rctx->dma_ct = dma_map_sg(hdev->dev, sg, 1,
728 		err = stm32_hash_xmit_dma(hdev, sg, len, !is_last);
738 		bufcnt += sg[0].length;
739 		dma_unmap_sg(hdev->dev, sg, 1, DMA_TO_DEVICE);
1103 			       struct scatterlist *sg, int bs,
1121 	scatterwalk_map_and_copy(buf + state->bufcnt, sg, rctx->offset,
1125 	rctx->sg = rctx->sgl;
1135 static int stm32_hash_align_sgs(struct scatterlist *sg,
1141 	struct scatterlist *sg_tmp = sg;
1149 	if (!sg || !sg->length || !nbytes) {
1154 			rctx->sg = rctx->sgl;
1236 		return stm32_hash_copy_sgs(rctx, sg, bs, new_len);
1244 		sg_chain(rctx->sgl, 2, sg);
1245 		rctx->sg = rctx->sgl;
1247 		rctx->sg = sg;
1302 	/* copy buffer in a temporary one that is used for sg alignment */
1349 		free_pages((unsigned long)sg_virt(rctx->sg), get_order(rctx->sg->length));
1351 	rctx->sg = NULL;
1402 		rctx->sg = req->src;
1443 		rctx->sg = req->src;