42 #define DES_REG_KEY(dd, x)		((dd)->pdata->key_ofs - \  argument
45 #define DES_REG_IV(dd, x)		((dd)->pdata->iv_ofs + ((x) * 0x04))  argument
47 #define DES_REG_CTRL(dd)		((dd)->pdata->ctrl_ofs)  argument
54 #define DES_REG_DATA_N(dd, x)		((dd)->pdata->data_ofs + ((x) * 0x04))  argument
56 #define DES_REG_REV(dd)			((dd)->pdata->rev_ofs)  argument
58 #define DES_REG_MASK(dd)		((dd)->pdata->mask_ofs)  argument
62 #define DES_REG_IRQ_STATUS(dd)         ((dd)->pdata->irq_status_ofs)  argument
63 #define DES_REG_IRQ_ENABLE(dd)         ((dd)->pdata->irq_enable_ofs)  argument
79 	struct omap_des_dev *dd;  member
103 	void		(*trigger)(struct omap_des_dev *dd, int length);
167 #define omap_des_read(dd, offset)                               \  argument
170 	 _read_ret = __raw_readl(dd->io_base + offset);          \
176 static inline u32 omap_des_read(struct omap_des_dev *dd, u32 offset)  in omap_des_read()  argument
178 	return __raw_readl(dd->io_base + offset);  in omap_des_read()
183 #define omap_des_write(dd, offset, value)                               \  argument
187 		__raw_writel(value, dd->io_base + offset);              \
190 static inline void omap_des_write(struct omap_des_dev *dd, u32 offset,  in omap_des_write()  argument
193 	__raw_writel(value, dd->io_base + offset);  in omap_des_write()
197 static inline void omap_des_write_mask(struct omap_des_dev *dd, u32 offset,  in omap_des_write_mask()  argument
202 	val = omap_des_read(dd, offset);  in omap_des_write_mask()
205 	omap_des_write(dd, offset, val);  in omap_des_write_mask()
208 static void omap_des_write_n(struct omap_des_dev *dd, u32 offset,  in omap_des_write_n()  argument
212 		omap_des_write(dd, offset, *value);  in omap_des_write_n()
215 static int omap_des_hw_init(struct omap_des_dev *dd)  in omap_des_hw_init()  argument
224 	err = pm_runtime_resume_and_get(dd->dev);  in omap_des_hw_init()
226 		dev_err(dd->dev, "%s: failed to get_sync(%d)\n", __func__, err);  in omap_des_hw_init()
230 	if (!(dd->flags & FLAGS_INIT)) {  in omap_des_hw_init()
231 		dd->flags |= FLAGS_INIT;  in omap_des_hw_init()
232 		dd->err = 0;  in omap_des_hw_init()
238 static int omap_des_write_ctrl(struct omap_des_dev *dd)  in omap_des_write_ctrl()  argument
244 	err = omap_des_hw_init(dd);  in omap_des_write_ctrl()
248 	key32 = dd->ctx->keylen / sizeof(u32);  in omap_des_write_ctrl()
252 		omap_des_write(dd, DES_REG_KEY(dd, i),  in omap_des_write_ctrl()
253 			       __le32_to_cpu(dd->ctx->key[i]));  in omap_des_write_ctrl()
256 	if ((dd->flags & FLAGS_CBC) && dd->req->iv)  in omap_des_write_ctrl()
257 		omap_des_write_n(dd, DES_REG_IV(dd, 0), (void *)dd->req->iv, 2);  in omap_des_write_ctrl()
259 	if (dd->flags & FLAGS_CBC)  in omap_des_write_ctrl()
261 	if (dd->flags & FLAGS_ENCRYPT)  in omap_des_write_ctrl()
268 	omap_des_write_mask(dd, DES_REG_CTRL(dd), val, mask);  in omap_des_write_ctrl()
273 static void omap_des_dma_trigger_omap4(struct omap_des_dev *dd, int length)  in omap_des_dma_trigger_omap4()  argument
277 	omap_des_write(dd, DES_REG_LENGTH_N(0), length);  in omap_des_dma_trigger_omap4()
279 	val = dd->pdata->dma_start;  in omap_des_dma_trigger_omap4()
281 	if (dd->dma_lch_out != NULL)  in omap_des_dma_trigger_omap4()
282 		val |= dd->pdata->dma_enable_out;  in omap_des_dma_trigger_omap4()
283 	if (dd->dma_lch_in != NULL)  in omap_des_dma_trigger_omap4()
284 		val |= dd->pdata->dma_enable_in;  in omap_des_dma_trigger_omap4()
286 	mask = dd->pdata->dma_enable_out | dd->pdata->dma_enable_in |  in omap_des_dma_trigger_omap4()
287 	       dd->pdata->dma_start;  in omap_des_dma_trigger_omap4()
289 	omap_des_write_mask(dd, DES_REG_MASK(dd), val, mask);  in omap_des_dma_trigger_omap4()
292 static void omap_des_dma_stop(struct omap_des_dev *dd)  in omap_des_dma_stop()  argument
296 	mask = dd->pdata->dma_enable_out | dd->pdata->dma_enable_in |  in omap_des_dma_stop()
297 	       dd->pdata->dma_start;  in omap_des_dma_stop()
299 	omap_des_write_mask(dd, DES_REG_MASK(dd), 0, mask);  in omap_des_dma_stop()
304 	struct omap_des_dev *dd = NULL, *tmp;  in omap_des_find_dev()  local
307 	if (!ctx->dd) {  in omap_des_find_dev()
310 			dd = tmp;  in omap_des_find_dev()
313 		ctx->dd = dd;  in omap_des_find_dev()
316 		dd = ctx->dd;  in omap_des_find_dev()
320 	return dd;  in omap_des_find_dev()
325 	struct omap_des_dev *dd = data;  in omap_des_dma_out_callback()  local
328 	tasklet_schedule(&dd->done_task);  in omap_des_dma_out_callback()
331 static int omap_des_dma_init(struct omap_des_dev *dd)  in omap_des_dma_init()  argument
335 	dd->dma_lch_out = NULL;  in omap_des_dma_init()
336 	dd->dma_lch_in = NULL;  in omap_des_dma_init()
338 	dd->dma_lch_in = dma_request_chan(dd->dev, "rx");  in omap_des_dma_init()
339 	if (IS_ERR(dd->dma_lch_in)) {  in omap_des_dma_init()
340 		dev_err(dd->dev, "Unable to request in DMA channel\n");  in omap_des_dma_init()
341 		return PTR_ERR(dd->dma_lch_in);  in omap_des_dma_init()
344 	dd->dma_lch_out = dma_request_chan(dd->dev, "tx");  in omap_des_dma_init()
345 	if (IS_ERR(dd->dma_lch_out)) {  in omap_des_dma_init()
346 		dev_err(dd->dev, "Unable to request out DMA channel\n");  in omap_des_dma_init()
347 		err = PTR_ERR(dd->dma_lch_out);  in omap_des_dma_init()
354 	dma_release_channel(dd->dma_lch_in);  in omap_des_dma_init()
359 static void omap_des_dma_cleanup(struct omap_des_dev *dd)  in omap_des_dma_cleanup()  argument
361 	if (dd->pio_only)  in omap_des_dma_cleanup()
364 	dma_release_channel(dd->dma_lch_out);  in omap_des_dma_cleanup()
365 	dma_release_channel(dd->dma_lch_in);  in omap_des_dma_cleanup()
373 	struct omap_des_dev *dd = ctx->dd;  in omap_des_crypt_dma()  local
378 	if (dd->pio_only) {  in omap_des_crypt_dma()
379 		dd->in_sg_offset = 0;  in omap_des_crypt_dma()
380 		dd->out_sg_offset = 0;  in omap_des_crypt_dma()
384 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x2);  in omap_des_crypt_dma()
388 	dma_sync_sg_for_device(dd->dev, dd->in_sg, in_sg_len, DMA_TO_DEVICE);  in omap_des_crypt_dma()
392 	cfg.src_addr = dd->phys_base + DES_REG_DATA_N(dd, 0);  in omap_des_crypt_dma()
393 	cfg.dst_addr = dd->phys_base + DES_REG_DATA_N(dd, 0);  in omap_des_crypt_dma()
400 	ret = dmaengine_slave_config(dd->dma_lch_in, &cfg);  in omap_des_crypt_dma()
402 		dev_err(dd->dev, "can't configure IN dmaengine slave: %d\n",  in omap_des_crypt_dma()
407 	tx_in = dmaengine_prep_slave_sg(dd->dma_lch_in, in_sg, in_sg_len,  in omap_des_crypt_dma()
411 		dev_err(dd->dev, "IN prep_slave_sg() failed\n");  in omap_des_crypt_dma()
416 	tx_in->callback_param = dd;  in omap_des_crypt_dma()
419 	ret = dmaengine_slave_config(dd->dma_lch_out, &cfg);  in omap_des_crypt_dma()
421 		dev_err(dd->dev, "can't configure OUT dmaengine slave: %d\n",  in omap_des_crypt_dma()
426 	tx_out = dmaengine_prep_slave_sg(dd->dma_lch_out, out_sg, out_sg_len,  in omap_des_crypt_dma()
430 		dev_err(dd->dev, "OUT prep_slave_sg() failed\n");  in omap_des_crypt_dma()
435 	tx_out->callback_param = dd;  in omap_des_crypt_dma()
440 	dma_async_issue_pending(dd->dma_lch_in);  in omap_des_crypt_dma()
441 	dma_async_issue_pending(dd->dma_lch_out);  in omap_des_crypt_dma()
444 	dd->pdata->trigger(dd, dd->total);  in omap_des_crypt_dma()
449 static int omap_des_crypt_dma_start(struct omap_des_dev *dd)  in omap_des_crypt_dma_start()  argument
452 					crypto_skcipher_reqtfm(dd->req));  in omap_des_crypt_dma_start()
455 	pr_debug("total: %zd\n", dd->total);  in omap_des_crypt_dma_start()
457 	if (!dd->pio_only) {  in omap_des_crypt_dma_start()
458 		err = dma_map_sg(dd->dev, dd->in_sg, dd->in_sg_len,  in omap_des_crypt_dma_start()
461 			dev_err(dd->dev, "dma_map_sg() error\n");  in omap_des_crypt_dma_start()
465 		err = dma_map_sg(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_crypt_dma_start()
468 			dev_err(dd->dev, "dma_map_sg() error\n");  in omap_des_crypt_dma_start()
473 	err = omap_des_crypt_dma(tfm, dd->in_sg, dd->out_sg, dd->in_sg_len,  in omap_des_crypt_dma_start()
474 				 dd->out_sg_len);  in omap_des_crypt_dma_start()
475 	if (err && !dd->pio_only) {  in omap_des_crypt_dma_start()
476 		dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);  in omap_des_crypt_dma_start()
477 		dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_crypt_dma_start()
484 static void omap_des_finish_req(struct omap_des_dev *dd, int err)  in omap_des_finish_req()  argument
486 	struct skcipher_request *req = dd->req;  in omap_des_finish_req()
490 	crypto_finalize_skcipher_request(dd->engine, req, err);  in omap_des_finish_req()
492 	pm_runtime_mark_last_busy(dd->dev);  in omap_des_finish_req()
493 	pm_runtime_put_autosuspend(dd->dev);  in omap_des_finish_req()
496 static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)  in omap_des_crypt_dma_stop()  argument
498 	pr_debug("total: %zd\n", dd->total);  in omap_des_crypt_dma_stop()
500 	omap_des_dma_stop(dd);  in omap_des_crypt_dma_stop()
502 	dmaengine_terminate_all(dd->dma_lch_in);  in omap_des_crypt_dma_stop()
503 	dmaengine_terminate_all(dd->dma_lch_out);  in omap_des_crypt_dma_stop()
508 static int omap_des_handle_queue(struct omap_des_dev *dd,  in omap_des_handle_queue()  argument
512 		return crypto_transfer_skcipher_request_to_engine(dd->engine, req);  in omap_des_handle_queue()
518 				struct omap_des_dev *dd)  in omap_des_prepare_req()  argument
527 	dd->req = req;  in omap_des_prepare_req()
528 	dd->total = req->cryptlen;  in omap_des_prepare_req()
529 	dd->total_save = req->cryptlen;  in omap_des_prepare_req()
530 	dd->in_sg = req->src;  in omap_des_prepare_req()
531 	dd->out_sg = req->dst;  in omap_des_prepare_req()
532 	dd->orig_out = req->dst;  in omap_des_prepare_req()
538 	ret = omap_crypto_align_sg(&dd->in_sg, dd->total, DES_BLOCK_SIZE,  in omap_des_prepare_req()
539 				   &dd->in_sgl, flags,  in omap_des_prepare_req()
540 				   FLAGS_IN_DATA_ST_SHIFT, &dd->flags);  in omap_des_prepare_req()
544 	ret = omap_crypto_align_sg(&dd->out_sg, dd->total, DES_BLOCK_SIZE,  in omap_des_prepare_req()
545 				   &dd->out_sgl, 0,  in omap_des_prepare_req()
546 				   FLAGS_OUT_DATA_ST_SHIFT, &dd->flags);  in omap_des_prepare_req()
550 	dd->in_sg_len = sg_nents_for_len(dd->in_sg, dd->total);  in omap_des_prepare_req()
551 	if (dd->in_sg_len < 0)  in omap_des_prepare_req()
552 		return dd->in_sg_len;  in omap_des_prepare_req()
554 	dd->out_sg_len = sg_nents_for_len(dd->out_sg, dd->total);  in omap_des_prepare_req()
555 	if (dd->out_sg_len < 0)  in omap_des_prepare_req()
556 		return dd->out_sg_len;  in omap_des_prepare_req()
561 	dd->flags = (dd->flags & ~FLAGS_MODE_MASK) | rctx->mode;  in omap_des_prepare_req()
563 	dd->ctx = ctx;  in omap_des_prepare_req()
564 	ctx->dd = dd;  in omap_des_prepare_req()
566 	return omap_des_write_ctrl(dd);  in omap_des_prepare_req()
575 	struct omap_des_dev *dd = omap_des_find_dev(ctx);  in omap_des_crypt_req()  local
577 	if (!dd)  in omap_des_crypt_req()
580 	return omap_des_prepare_req(req, dd) ?:  in omap_des_crypt_req()
581 	       omap_des_crypt_dma_start(dd);  in omap_des_crypt_req()
586 	struct omap_des_dev *dd = (struct omap_des_dev *)data;  in omap_des_done_task()  local
591 	if (!dd->pio_only) {  in omap_des_done_task()
592 		dma_sync_sg_for_device(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_done_task()
594 		dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);  in omap_des_done_task()
595 		dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_done_task()
597 		omap_des_crypt_dma_stop(dd);  in omap_des_done_task()
600 	omap_crypto_cleanup(&dd->in_sgl, NULL, 0, dd->total_save,  in omap_des_done_task()
601 			    FLAGS_IN_DATA_ST_SHIFT, dd->flags);  in omap_des_done_task()
603 	omap_crypto_cleanup(&dd->out_sgl, dd->orig_out, 0, dd->total_save,  in omap_des_done_task()
604 			    FLAGS_OUT_DATA_ST_SHIFT, dd->flags);  in omap_des_done_task()
606 	if ((dd->flags & FLAGS_CBC) && dd->req->iv)  in omap_des_done_task()
608 			((u32 *)dd->req->iv)[i] =  in omap_des_done_task()
609 				omap_des_read(dd, DES_REG_IV(dd, i));  in omap_des_done_task()
611 	omap_des_finish_req(dd, 0);  in omap_des_done_task()
621 	struct omap_des_dev *dd;  in omap_des_crypt()  local
633 	dd = omap_des_find_dev(ctx);  in omap_des_crypt()
634 	if (!dd)  in omap_des_crypt()
639 	return omap_des_handle_queue(dd, req);  in omap_des_crypt()
826 	struct omap_des_dev *dd = dev_id;  in omap_des_irq()  local
830 	status = omap_des_read(dd, DES_REG_IRQ_STATUS(dd));  in omap_des_irq()
832 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x0);  in omap_des_irq()
834 		BUG_ON(!dd->in_sg);  in omap_des_irq()
836 		BUG_ON(dd->in_sg_offset > dd->in_sg->length);  in omap_des_irq()
838 		src = sg_virt(dd->in_sg) + dd->in_sg_offset;  in omap_des_irq()
841 			omap_des_write(dd, DES_REG_DATA_N(dd, i), *src);  in omap_des_irq()
842 			dd->in_sg_offset += 4;  in omap_des_irq()
843 			if (dd->in_sg_offset == dd->in_sg->length) {  in omap_des_irq()
844 				dd->in_sg = sg_next(dd->in_sg);  in omap_des_irq()
845 				if (dd->in_sg) {  in omap_des_irq()
846 					dd->in_sg_offset = 0;  in omap_des_irq()
847 					src = sg_virt(dd->in_sg);  in omap_des_irq()
856 		omap_des_write(dd, DES_REG_IRQ_STATUS(dd), status);  in omap_des_irq()
859 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x4);  in omap_des_irq()
862 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x0);  in omap_des_irq()
864 		BUG_ON(!dd->out_sg);  in omap_des_irq()
866 		BUG_ON(dd->out_sg_offset > dd->out_sg->length);  in omap_des_irq()
868 		dst = sg_virt(dd->out_sg) + dd->out_sg_offset;  in omap_des_irq()
871 			*dst = omap_des_read(dd, DES_REG_DATA_N(dd, i));  in omap_des_irq()
872 			dd->out_sg_offset += 4;  in omap_des_irq()
873 			if (dd->out_sg_offset == dd->out_sg->length) {  in omap_des_irq()
874 				dd->out_sg = sg_next(dd->out_sg);  in omap_des_irq()
875 				if (dd->out_sg) {  in omap_des_irq()
876 					dd->out_sg_offset = 0;  in omap_des_irq()
877 					dst = sg_virt(dd->out_sg);  in omap_des_irq()
884 		BUG_ON(dd->total < DES_BLOCK_SIZE);  in omap_des_irq()
886 		dd->total -= DES_BLOCK_SIZE;  in omap_des_irq()
890 		omap_des_write(dd, DES_REG_IRQ_STATUS(dd), status);  in omap_des_irq()
892 		if (!dd->total)  in omap_des_irq()
894 			tasklet_schedule(&dd->done_task);  in omap_des_irq()
897 			omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x2);  in omap_des_irq()
912 static int omap_des_get_of(struct omap_des_dev *dd,  in omap_des_get_of()  argument
916 	dd->pdata = of_device_get_match_data(&pdev->dev);  in omap_des_get_of()
917 	if (!dd->pdata) {  in omap_des_get_of()
925 static int omap_des_get_of(struct omap_des_dev *dd,  in omap_des_get_of()  argument
932 static int omap_des_get_pdev(struct omap_des_dev *dd,  in omap_des_get_pdev()  argument
936 	dd->pdata = pdev->dev.platform_data;  in omap_des_get_pdev()
944 	struct omap_des_dev *dd;  in omap_des_probe()  local
950 	dd = devm_kzalloc(dev, sizeof(struct omap_des_dev), GFP_KERNEL);  in omap_des_probe()
951 	if (dd == NULL) {  in omap_des_probe()
955 	dd->dev = dev;  in omap_des_probe()
956 	platform_set_drvdata(pdev, dd);  in omap_des_probe()
958 	err = (dev->of_node) ? omap_des_get_of(dd, pdev) :  in omap_des_probe()
959 			       omap_des_get_pdev(dd, pdev);  in omap_des_probe()
963 	dd->io_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);  in omap_des_probe()
964 	if (IS_ERR(dd->io_base)) {  in omap_des_probe()
965 		err = PTR_ERR(dd->io_base);  in omap_des_probe()
968 	dd->phys_base = res->start;  in omap_des_probe()
976 		dev_err(dd->dev, "%s: failed to get_sync(%d)\n", __func__, err);  in omap_des_probe()
980 	omap_des_dma_stop(dd);  in omap_des_probe()
982 	reg = omap_des_read(dd, DES_REG_REV(dd));  in omap_des_probe()
987 		 (reg & dd->pdata->major_mask) >> dd->pdata->major_shift,  in omap_des_probe()
988 		 (reg & dd->pdata->minor_mask) >> dd->pdata->minor_shift);  in omap_des_probe()
990 	tasklet_init(&dd->done_task, omap_des_done_task, (unsigned long)dd);  in omap_des_probe()
992 	err = omap_des_dma_init(dd);  in omap_des_probe()
995 	} else if (err && DES_REG_IRQ_STATUS(dd) && DES_REG_IRQ_ENABLE(dd)) {  in omap_des_probe()
996 		dd->pio_only = 1;  in omap_des_probe()
1005 				dev_name(dev), dd);  in omap_des_probe()
1013 	INIT_LIST_HEAD(&dd->list);  in omap_des_probe()
1015 	list_add_tail(&dd->list, &dev_list);  in omap_des_probe()
1019 	dd->engine = crypto_engine_alloc_init(dev, 1);  in omap_des_probe()
1020 	if (!dd->engine) {  in omap_des_probe()
1025 	err = crypto_engine_start(dd->engine);  in omap_des_probe()
1029 	for (i = 0; i < dd->pdata->algs_info_size; i++) {  in omap_des_probe()
1030 		for (j = 0; j < dd->pdata->algs_info[i].size; j++) {  in omap_des_probe()
1031 			algp = &dd->pdata->algs_info[i].algs_list[j];  in omap_des_probe()
1039 			dd->pdata->algs_info[i].registered++;  in omap_des_probe()
1046 	for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)  in omap_des_probe()
1047 		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)  in omap_des_probe()
1049 					&dd->pdata->algs_info[i].algs_list[j]);  in omap_des_probe()
1052 	if (dd->engine)  in omap_des_probe()
1053 		crypto_engine_exit(dd->engine);  in omap_des_probe()
1055 	omap_des_dma_cleanup(dd);  in omap_des_probe()
1057 	tasklet_kill(&dd->done_task);  in omap_des_probe()
1061 	dd = NULL;  in omap_des_probe()
1069 	struct omap_des_dev *dd = platform_get_drvdata(pdev);  in omap_des_remove()  local
1073 	list_del(&dd->list);  in omap_des_remove()
1076 	for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)  in omap_des_remove()
1077 		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)  in omap_des_remove()
1079 					&dd->pdata->algs_info[i].algs_list[j]);  in omap_des_remove()
1081 	tasklet_kill(&dd->done_task);  in omap_des_remove()
1082 	omap_des_dma_cleanup(dd);  in omap_des_remove()
1083 	pm_runtime_disable(dd->dev);  in omap_des_remove()