3  * sun8i-ss-cipher.c - hardware cryptographic offloader for
21 #include "sun8i-ss.h"
75 	/* SS need same numbers of SG (with same length) for source and destination */  in sun8i_ss_need_fallback()
119 	struct sun8i_ss_dev *ss = op->ss;  in sun8i_ss_setup_ivs()  local
125 	struct sun8i_ss_flow *sf = &ss->flows[rctx->flow];  in sun8i_ss_setup_ivs()
145 		a = dma_map_single(ss->dev, sf->iv[i], ivsize, DMA_TO_DEVICE);  in sun8i_ss_setup_ivs()
146 		if (dma_mapping_error(ss->dev, a)) {  in sun8i_ss_setup_ivs()
148 			dev_err(ss->dev, "Cannot DMA MAP IV\n");  in sun8i_ss_setup_ivs()
171 		dma_unmap_single(ss->dev, rctx->p_iv[i], ivsize, DMA_TO_DEVICE);  in sun8i_ss_setup_ivs()
182 	struct sun8i_ss_dev *ss = op->ss;  in sun8i_ss_cipher()  local
186 	struct sun8i_ss_flow *sf = &ss->flows[rctx->flow];  in sun8i_ss_cipher()
198 	dev_dbg(ss->dev, "%s %s %u %x IV(%p %u) key=%u\n", __func__,  in sun8i_ss_cipher()
208 	rctx->op_mode = ss->variant->op_mode[algt->ss_blockmode];  in sun8i_ss_cipher()
209 	rctx->method = ss->variant->alg_cipher[algt->ss_algo_id];  in sun8i_ss_cipher()
212 	rctx->p_key = dma_map_single(ss->dev, op->key, op->keylen, DMA_TO_DEVICE);  in sun8i_ss_cipher()
213 	if (dma_mapping_error(ss->dev, rctx->p_key)) {  in sun8i_ss_cipher()
214 		dev_err(ss->dev, "Cannot DMA MAP KEY\n");  in sun8i_ss_cipher()
226 		nr_sgs = dma_map_sg(ss->dev, areq->src, nsgs, DMA_BIDIRECTIONAL);  in sun8i_ss_cipher()
228 			dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs);  in sun8i_ss_cipher()
234 		nr_sgs = dma_map_sg(ss->dev, areq->src, nsgs, DMA_TO_DEVICE);  in sun8i_ss_cipher()
236 			dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs);  in sun8i_ss_cipher()
240 		nr_sgd = dma_map_sg(ss->dev, areq->dst, nsgd, DMA_FROM_DEVICE);  in sun8i_ss_cipher()
242 			dev_err(ss->dev, "Invalid sg number %d\n", nr_sgd);  in sun8i_ss_cipher()
257 		dev_dbg(ss->dev, "%s total=%u SGS(%d %u off=%d) todo=%u\n", __func__,  in sun8i_ss_cipher()
265 		dev_err(ss->dev, "remaining len %d\n", len);  in sun8i_ss_cipher()
279 		dev_dbg(ss->dev, "%s total=%u SGD(%d %u off=%d) todo=%u\n", __func__,  in sun8i_ss_cipher()
287 		dev_err(ss->dev, "remaining len %d\n", len);  in sun8i_ss_cipher()
292 	err = sun8i_ss_run_task(ss, rctx, crypto_tfm_alg_name(areq->base.tfm));  in sun8i_ss_cipher()
296 		dma_unmap_sg(ss->dev, areq->src, nsgs, DMA_BIDIRECTIONAL);  in sun8i_ss_cipher()
298 		dma_unmap_sg(ss->dev, areq->src, nsgs, DMA_TO_DEVICE);  in sun8i_ss_cipher()
299 		dma_unmap_sg(ss->dev, areq->dst, nsgd, DMA_FROM_DEVICE);  in sun8i_ss_cipher()
305 			dma_unmap_single(ss->dev, rctx->p_iv[i], ivsize, DMA_TO_DEVICE);  in sun8i_ss_cipher()
320 	dma_unmap_single(ss->dev, rctx->p_key, op->keylen, DMA_TO_DEVICE);  in sun8i_ss_cipher()
354 	e = sun8i_ss_get_engine_number(op->ss);  in sun8i_ss_skdecrypt()
355 	engine = op->ss->flows[e].engine;  in sun8i_ss_skdecrypt()
375 	e = sun8i_ss_get_engine_number(op->ss);  in sun8i_ss_skencrypt()
376 	engine = op->ss->flows[e].engine;  in sun8i_ss_skencrypt()
394 	op->ss = algt->ss;  in sun8i_ss_cipher_init()
398 		dev_err(op->ss->dev, "ERROR: Cannot allocate fallback for %s %ld\n",  in sun8i_ss_cipher_init()
415 	err = pm_runtime_resume_and_get(op->ss->dev);  in sun8i_ss_cipher_init()
417 		dev_err(op->ss->dev, "pm error %d\n", err);  in sun8i_ss_cipher_init()
433 	pm_runtime_put_sync(op->ss->dev);  in sun8i_ss_cipher_exit()
440 	struct sun8i_ss_dev *ss = op->ss;  in sun8i_ss_aes_setkey()  local
450 		dev_dbg(ss->dev, "ERROR: Invalid keylen %u\n", keylen);  in sun8i_ss_aes_setkey()
469 	struct sun8i_ss_dev *ss = op->ss;  in sun8i_ss_des3_setkey()  local
472 		dev_dbg(ss->dev, "Invalid keylen %u\n", keylen);  in sun8i_ss_des3_setkey()