47 #define _calc_walked(inout) (dd->inout##_walk.offset - dd->inout##_sg->offset)
49 #define DES_REG_KEY(dd, x)		((dd)->pdata->key_ofs - \  argument
52 #define DES_REG_IV(dd, x)		((dd)->pdata->iv_ofs + ((x) * 0x04))  argument
54 #define DES_REG_CTRL(dd)		((dd)->pdata->ctrl_ofs)  argument
61 #define DES_REG_DATA_N(dd, x)		((dd)->pdata->data_ofs + ((x) * 0x04))  argument
63 #define DES_REG_REV(dd)			((dd)->pdata->rev_ofs)  argument
65 #define DES_REG_MASK(dd)		((dd)->pdata->mask_ofs)  argument
69 #define DES_REG_IRQ_STATUS(dd)         ((dd)->pdata->irq_status_ofs)  argument
70 #define DES_REG_IRQ_ENABLE(dd)         ((dd)->pdata->irq_enable_ofs)  argument
87 	struct omap_des_dev *dd;  member
111 	void		(*trigger)(struct omap_des_dev *dd, int length);
175 #define omap_des_read(dd, offset)                               \  argument
178 	 _read_ret = __raw_readl(dd->io_base + offset);          \
184 static inline u32 omap_des_read(struct omap_des_dev *dd, u32 offset)  in omap_des_read()  argument
186 	return __raw_readl(dd->io_base + offset);  in omap_des_read()
191 #define omap_des_write(dd, offset, value)                               \  argument
195 		__raw_writel(value, dd->io_base + offset);              \
198 static inline void omap_des_write(struct omap_des_dev *dd, u32 offset,  in omap_des_write()  argument
201 	__raw_writel(value, dd->io_base + offset);  in omap_des_write()
205 static inline void omap_des_write_mask(struct omap_des_dev *dd, u32 offset,  in omap_des_write_mask()  argument
210 	val = omap_des_read(dd, offset);  in omap_des_write_mask()
213 	omap_des_write(dd, offset, val);  in omap_des_write_mask()
216 static void omap_des_write_n(struct omap_des_dev *dd, u32 offset,  in omap_des_write_n()  argument
220 		omap_des_write(dd, offset, *value);  in omap_des_write_n()
223 static int omap_des_hw_init(struct omap_des_dev *dd)  in omap_des_hw_init()  argument
232 	err = pm_runtime_get_sync(dd->dev);  in omap_des_hw_init()
234 		pm_runtime_put_noidle(dd->dev);  in omap_des_hw_init()
235 		dev_err(dd->dev, "%s: failed to get_sync(%d)\n", __func__, err);  in omap_des_hw_init()
239 	if (!(dd->flags & FLAGS_INIT)) {  in omap_des_hw_init()
240 		dd->flags |= FLAGS_INIT;  in omap_des_hw_init()
241 		dd->err = 0;  in omap_des_hw_init()
247 static int omap_des_write_ctrl(struct omap_des_dev *dd)  in omap_des_write_ctrl()  argument
253 	err = omap_des_hw_init(dd);  in omap_des_write_ctrl()
257 	key32 = dd->ctx->keylen / sizeof(u32);  in omap_des_write_ctrl()
261 		omap_des_write(dd, DES_REG_KEY(dd, i),  in omap_des_write_ctrl()
262 			       __le32_to_cpu(dd->ctx->key[i]));  in omap_des_write_ctrl()
265 	if ((dd->flags & FLAGS_CBC) && dd->req->iv)  in omap_des_write_ctrl()
266 		omap_des_write_n(dd, DES_REG_IV(dd, 0), (void *)dd->req->iv, 2);  in omap_des_write_ctrl()
268 	if (dd->flags & FLAGS_CBC)  in omap_des_write_ctrl()
270 	if (dd->flags & FLAGS_ENCRYPT)  in omap_des_write_ctrl()
277 	omap_des_write_mask(dd, DES_REG_CTRL(dd), val, mask);  in omap_des_write_ctrl()
282 static void omap_des_dma_trigger_omap4(struct omap_des_dev *dd, int length)  in omap_des_dma_trigger_omap4()  argument
286 	omap_des_write(dd, DES_REG_LENGTH_N(0), length);  in omap_des_dma_trigger_omap4()
288 	val = dd->pdata->dma_start;  in omap_des_dma_trigger_omap4()
290 	if (dd->dma_lch_out != NULL)  in omap_des_dma_trigger_omap4()
291 		val |= dd->pdata->dma_enable_out;  in omap_des_dma_trigger_omap4()
292 	if (dd->dma_lch_in != NULL)  in omap_des_dma_trigger_omap4()
293 		val |= dd->pdata->dma_enable_in;  in omap_des_dma_trigger_omap4()
295 	mask = dd->pdata->dma_enable_out | dd->pdata->dma_enable_in |  in omap_des_dma_trigger_omap4()
296 	       dd->pdata->dma_start;  in omap_des_dma_trigger_omap4()
298 	omap_des_write_mask(dd, DES_REG_MASK(dd), val, mask);  in omap_des_dma_trigger_omap4()
301 static void omap_des_dma_stop(struct omap_des_dev *dd)  in omap_des_dma_stop()  argument
305 	mask = dd->pdata->dma_enable_out | dd->pdata->dma_enable_in |  in omap_des_dma_stop()
306 	       dd->pdata->dma_start;  in omap_des_dma_stop()
308 	omap_des_write_mask(dd, DES_REG_MASK(dd), 0, mask);  in omap_des_dma_stop()
313 	struct omap_des_dev *dd = NULL, *tmp;  in omap_des_find_dev()  local
316 	if (!ctx->dd) {  in omap_des_find_dev()
319 			dd = tmp;  in omap_des_find_dev()
322 		ctx->dd = dd;  in omap_des_find_dev()
325 		dd = ctx->dd;  in omap_des_find_dev()
329 	return dd;  in omap_des_find_dev()
334 	struct omap_des_dev *dd = data;  in omap_des_dma_out_callback()  local
337 	tasklet_schedule(&dd->done_task);  in omap_des_dma_out_callback()
340 static int omap_des_dma_init(struct omap_des_dev *dd)  in omap_des_dma_init()  argument
344 	dd->dma_lch_out = NULL;  in omap_des_dma_init()
345 	dd->dma_lch_in = NULL;  in omap_des_dma_init()
347 	dd->dma_lch_in = dma_request_chan(dd->dev, "rx");  in omap_des_dma_init()
348 	if (IS_ERR(dd->dma_lch_in)) {  in omap_des_dma_init()
349 		dev_err(dd->dev, "Unable to request in DMA channel\n");  in omap_des_dma_init()
350 		return PTR_ERR(dd->dma_lch_in);  in omap_des_dma_init()
353 	dd->dma_lch_out = dma_request_chan(dd->dev, "tx");  in omap_des_dma_init()
354 	if (IS_ERR(dd->dma_lch_out)) {  in omap_des_dma_init()
355 		dev_err(dd->dev, "Unable to request out DMA channel\n");  in omap_des_dma_init()
356 		err = PTR_ERR(dd->dma_lch_out);  in omap_des_dma_init()
363 	dma_release_channel(dd->dma_lch_in);  in omap_des_dma_init()
368 static void omap_des_dma_cleanup(struct omap_des_dev *dd)  in omap_des_dma_cleanup()  argument
370 	if (dd->pio_only)  in omap_des_dma_cleanup()
373 	dma_release_channel(dd->dma_lch_out);  in omap_des_dma_cleanup()
374 	dma_release_channel(dd->dma_lch_in);  in omap_des_dma_cleanup()
382 	struct omap_des_dev *dd = ctx->dd;  in omap_des_crypt_dma()  local
387 	if (dd->pio_only) {  in omap_des_crypt_dma()
388 		scatterwalk_start(&dd->in_walk, dd->in_sg);  in omap_des_crypt_dma()
389 		scatterwalk_start(&dd->out_walk, dd->out_sg);  in omap_des_crypt_dma()
393 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x2);  in omap_des_crypt_dma()
397 	dma_sync_sg_for_device(dd->dev, dd->in_sg, in_sg_len, DMA_TO_DEVICE);  in omap_des_crypt_dma()
401 	cfg.src_addr = dd->phys_base + DES_REG_DATA_N(dd, 0);  in omap_des_crypt_dma()
402 	cfg.dst_addr = dd->phys_base + DES_REG_DATA_N(dd, 0);  in omap_des_crypt_dma()
409 	ret = dmaengine_slave_config(dd->dma_lch_in, &cfg);  in omap_des_crypt_dma()
411 		dev_err(dd->dev, "can't configure IN dmaengine slave: %d\n",  in omap_des_crypt_dma()
416 	tx_in = dmaengine_prep_slave_sg(dd->dma_lch_in, in_sg, in_sg_len,  in omap_des_crypt_dma()
420 		dev_err(dd->dev, "IN prep_slave_sg() failed\n");  in omap_des_crypt_dma()
425 	tx_in->callback_param = dd;  in omap_des_crypt_dma()
428 	ret = dmaengine_slave_config(dd->dma_lch_out, &cfg);  in omap_des_crypt_dma()
430 		dev_err(dd->dev, "can't configure OUT dmaengine slave: %d\n",  in omap_des_crypt_dma()
435 	tx_out = dmaengine_prep_slave_sg(dd->dma_lch_out, out_sg, out_sg_len,  in omap_des_crypt_dma()
439 		dev_err(dd->dev, "OUT prep_slave_sg() failed\n");  in omap_des_crypt_dma()
444 	tx_out->callback_param = dd;  in omap_des_crypt_dma()
449 	dma_async_issue_pending(dd->dma_lch_in);  in omap_des_crypt_dma()
450 	dma_async_issue_pending(dd->dma_lch_out);  in omap_des_crypt_dma()
453 	dd->pdata->trigger(dd, dd->total);  in omap_des_crypt_dma()
458 static int omap_des_crypt_dma_start(struct omap_des_dev *dd)  in omap_des_crypt_dma_start()  argument
461 					crypto_skcipher_reqtfm(dd->req));  in omap_des_crypt_dma_start()
464 	pr_debug("total: %zd\n", dd->total);  in omap_des_crypt_dma_start()
466 	if (!dd->pio_only) {  in omap_des_crypt_dma_start()
467 		err = dma_map_sg(dd->dev, dd->in_sg, dd->in_sg_len,  in omap_des_crypt_dma_start()
470 			dev_err(dd->dev, "dma_map_sg() error\n");  in omap_des_crypt_dma_start()
474 		err = dma_map_sg(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_crypt_dma_start()
477 			dev_err(dd->dev, "dma_map_sg() error\n");  in omap_des_crypt_dma_start()
482 	err = omap_des_crypt_dma(tfm, dd->in_sg, dd->out_sg, dd->in_sg_len,  in omap_des_crypt_dma_start()
483 				 dd->out_sg_len);  in omap_des_crypt_dma_start()
484 	if (err && !dd->pio_only) {  in omap_des_crypt_dma_start()
485 		dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);  in omap_des_crypt_dma_start()
486 		dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_crypt_dma_start()
493 static void omap_des_finish_req(struct omap_des_dev *dd, int err)  in omap_des_finish_req()  argument
495 	struct skcipher_request *req = dd->req;  in omap_des_finish_req()
499 	crypto_finalize_skcipher_request(dd->engine, req, err);  in omap_des_finish_req()
501 	pm_runtime_mark_last_busy(dd->dev);  in omap_des_finish_req()
502 	pm_runtime_put_autosuspend(dd->dev);  in omap_des_finish_req()
505 static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)  in omap_des_crypt_dma_stop()  argument
507 	pr_debug("total: %zd\n", dd->total);  in omap_des_crypt_dma_stop()
509 	omap_des_dma_stop(dd);  in omap_des_crypt_dma_stop()
511 	dmaengine_terminate_all(dd->dma_lch_in);  in omap_des_crypt_dma_stop()
512 	dmaengine_terminate_all(dd->dma_lch_out);  in omap_des_crypt_dma_stop()
517 static int omap_des_handle_queue(struct omap_des_dev *dd,  in omap_des_handle_queue()  argument
521 		return crypto_transfer_skcipher_request_to_engine(dd->engine, req);  in omap_des_handle_queue()
532 	struct omap_des_dev *dd = omap_des_find_dev(ctx);  in omap_des_prepare_req()  local
537 	if (!dd)  in omap_des_prepare_req()
541 	dd->req = req;  in omap_des_prepare_req()
542 	dd->total = req->cryptlen;  in omap_des_prepare_req()
543 	dd->total_save = req->cryptlen;  in omap_des_prepare_req()
544 	dd->in_sg = req->src;  in omap_des_prepare_req()
545 	dd->out_sg = req->dst;  in omap_des_prepare_req()
546 	dd->orig_out = req->dst;  in omap_des_prepare_req()
552 	ret = omap_crypto_align_sg(&dd->in_sg, dd->total, DES_BLOCK_SIZE,  in omap_des_prepare_req()
553 				   &dd->in_sgl, flags,  in omap_des_prepare_req()
554 				   FLAGS_IN_DATA_ST_SHIFT, &dd->flags);  in omap_des_prepare_req()
558 	ret = omap_crypto_align_sg(&dd->out_sg, dd->total, DES_BLOCK_SIZE,  in omap_des_prepare_req()
559 				   &dd->out_sgl, 0,  in omap_des_prepare_req()
560 				   FLAGS_OUT_DATA_ST_SHIFT, &dd->flags);  in omap_des_prepare_req()
564 	dd->in_sg_len = sg_nents_for_len(dd->in_sg, dd->total);  in omap_des_prepare_req()
565 	if (dd->in_sg_len < 0)  in omap_des_prepare_req()
566 		return dd->in_sg_len;  in omap_des_prepare_req()
568 	dd->out_sg_len = sg_nents_for_len(dd->out_sg, dd->total);  in omap_des_prepare_req()
569 	if (dd->out_sg_len < 0)  in omap_des_prepare_req()
570 		return dd->out_sg_len;  in omap_des_prepare_req()
575 	dd->flags = (dd->flags & ~FLAGS_MODE_MASK) | rctx->mode;  in omap_des_prepare_req()
577 	dd->ctx = ctx;  in omap_des_prepare_req()
578 	ctx->dd = dd;  in omap_des_prepare_req()
580 	return omap_des_write_ctrl(dd);  in omap_des_prepare_req()
589 	struct omap_des_dev *dd = omap_des_find_dev(ctx);  in omap_des_crypt_req()  local
591 	if (!dd)  in omap_des_crypt_req()
594 	return omap_des_crypt_dma_start(dd);  in omap_des_crypt_req()
599 	struct omap_des_dev *dd = (struct omap_des_dev *)data;  in omap_des_done_task()  local
604 	if (!dd->pio_only) {  in omap_des_done_task()
605 		dma_sync_sg_for_device(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_done_task()
607 		dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);  in omap_des_done_task()
608 		dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_done_task()
610 		omap_des_crypt_dma_stop(dd);  in omap_des_done_task()
613 	omap_crypto_cleanup(&dd->in_sgl, NULL, 0, dd->total_save,  in omap_des_done_task()
614 			    FLAGS_IN_DATA_ST_SHIFT, dd->flags);  in omap_des_done_task()
616 	omap_crypto_cleanup(&dd->out_sgl, dd->orig_out, 0, dd->total_save,  in omap_des_done_task()
617 			    FLAGS_OUT_DATA_ST_SHIFT, dd->flags);  in omap_des_done_task()
619 	if ((dd->flags & FLAGS_CBC) && dd->req->iv)  in omap_des_done_task()
621 			((u32 *)dd->req->iv)[i] =  in omap_des_done_task()
622 				omap_des_read(dd, DES_REG_IV(dd, i));  in omap_des_done_task()
624 	omap_des_finish_req(dd, 0);  in omap_des_done_task()
634 	struct omap_des_dev *dd;  in omap_des_crypt()  local
646 	dd = omap_des_find_dev(ctx);  in omap_des_crypt()
647 	if (!dd)  in omap_des_crypt()
652 	return omap_des_handle_queue(dd, req);  in omap_des_crypt()
838 	struct omap_des_dev *dd = dev_id;  in omap_des_irq()  local
842 	status = omap_des_read(dd, DES_REG_IRQ_STATUS(dd));  in omap_des_irq()
844 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x0);  in omap_des_irq()
846 		BUG_ON(!dd->in_sg);  in omap_des_irq()
848 		BUG_ON(_calc_walked(in) > dd->in_sg->length);  in omap_des_irq()
850 		src = sg_virt(dd->in_sg) + _calc_walked(in);  in omap_des_irq()
853 			omap_des_write(dd, DES_REG_DATA_N(dd, i), *src);  in omap_des_irq()
855 			scatterwalk_advance(&dd->in_walk, 4);  in omap_des_irq()
856 			if (dd->in_sg->length == _calc_walked(in)) {  in omap_des_irq()
857 				dd->in_sg = sg_next(dd->in_sg);  in omap_des_irq()
858 				if (dd->in_sg) {  in omap_des_irq()
859 					scatterwalk_start(&dd->in_walk,  in omap_des_irq()
860 							  dd->in_sg);  in omap_des_irq()
861 					src = sg_virt(dd->in_sg) +  in omap_des_irq()
871 		omap_des_write(dd, DES_REG_IRQ_STATUS(dd), status);  in omap_des_irq()
874 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x4);  in omap_des_irq()
877 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x0);  in omap_des_irq()
879 		BUG_ON(!dd->out_sg);  in omap_des_irq()
881 		BUG_ON(_calc_walked(out) > dd->out_sg->length);  in omap_des_irq()
883 		dst = sg_virt(dd->out_sg) + _calc_walked(out);  in omap_des_irq()
886 			*dst = omap_des_read(dd, DES_REG_DATA_N(dd, i));  in omap_des_irq()
887 			scatterwalk_advance(&dd->out_walk, 4);  in omap_des_irq()
888 			if (dd->out_sg->length == _calc_walked(out)) {  in omap_des_irq()
889 				dd->out_sg = sg_next(dd->out_sg);  in omap_des_irq()
890 				if (dd->out_sg) {  in omap_des_irq()
891 					scatterwalk_start(&dd->out_walk,  in omap_des_irq()
892 							  dd->out_sg);  in omap_des_irq()
893 					dst = sg_virt(dd->out_sg) +  in omap_des_irq()
901 		BUG_ON(dd->total < DES_BLOCK_SIZE);  in omap_des_irq()
903 		dd->total -= DES_BLOCK_SIZE;  in omap_des_irq()
907 		omap_des_write(dd, DES_REG_IRQ_STATUS(dd), status);  in omap_des_irq()
909 		if (!dd->total)  in omap_des_irq()
911 			tasklet_schedule(&dd->done_task);  in omap_des_irq()
914 			omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x2);  in omap_des_irq()
929 static int omap_des_get_of(struct omap_des_dev *dd,  in omap_des_get_of()  argument
933 	dd->pdata = of_device_get_match_data(&pdev->dev);  in omap_des_get_of()
934 	if (!dd->pdata) {  in omap_des_get_of()
942 static int omap_des_get_of(struct omap_des_dev *dd,  in omap_des_get_of()  argument
949 static int omap_des_get_pdev(struct omap_des_dev *dd,  in omap_des_get_pdev()  argument
953 	dd->pdata = pdev->dev.platform_data;  in omap_des_get_pdev()
961 	struct omap_des_dev *dd;  in omap_des_probe()  local
967 	dd = devm_kzalloc(dev, sizeof(struct omap_des_dev), GFP_KERNEL);  in omap_des_probe()
968 	if (dd == NULL) {  in omap_des_probe()
972 	dd->dev = dev;  in omap_des_probe()
973 	platform_set_drvdata(pdev, dd);  in omap_des_probe()
981 	err = (dev->of_node) ? omap_des_get_of(dd, pdev) :  in omap_des_probe()
982 			       omap_des_get_pdev(dd, pdev);  in omap_des_probe()
986 	dd->io_base = devm_ioremap_resource(dev, res);  in omap_des_probe()
987 	if (IS_ERR(dd->io_base)) {  in omap_des_probe()
988 		err = PTR_ERR(dd->io_base);  in omap_des_probe()
991 	dd->phys_base = res->start;  in omap_des_probe()
1000 		dev_err(dd->dev, "%s: failed to get_sync(%d)\n", __func__, err);  in omap_des_probe()
1004 	omap_des_dma_stop(dd);  in omap_des_probe()
1006 	reg = omap_des_read(dd, DES_REG_REV(dd));  in omap_des_probe()
1011 		 (reg & dd->pdata->major_mask) >> dd->pdata->major_shift,  in omap_des_probe()
1012 		 (reg & dd->pdata->minor_mask) >> dd->pdata->minor_shift);  in omap_des_probe()
1014 	tasklet_init(&dd->done_task, omap_des_done_task, (unsigned long)dd);  in omap_des_probe()
1016 	err = omap_des_dma_init(dd);  in omap_des_probe()
1019 	} else if (err && DES_REG_IRQ_STATUS(dd) && DES_REG_IRQ_ENABLE(dd)) {  in omap_des_probe()
1020 		dd->pio_only = 1;  in omap_des_probe()
1029 				dev_name(dev), dd);  in omap_des_probe()
1037 	INIT_LIST_HEAD(&dd->list);  in omap_des_probe()
1039 	list_add_tail(&dd->list, &dev_list);  in omap_des_probe()
1043 	dd->engine = crypto_engine_alloc_init(dev, 1);  in omap_des_probe()
1044 	if (!dd->engine) {  in omap_des_probe()
1049 	err = crypto_engine_start(dd->engine);  in omap_des_probe()
1053 	for (i = 0; i < dd->pdata->algs_info_size; i++) {  in omap_des_probe()
1054 		for (j = 0; j < dd->pdata->algs_info[i].size; j++) {  in omap_des_probe()
1055 			algp = &dd->pdata->algs_info[i].algs_list[j];  in omap_des_probe()
1063 			dd->pdata->algs_info[i].registered++;  in omap_des_probe()
1070 	for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)  in omap_des_probe()
1071 		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)  in omap_des_probe()
1073 					&dd->pdata->algs_info[i].algs_list[j]);  in omap_des_probe()
1076 	if (dd->engine)  in omap_des_probe()
1077 		crypto_engine_exit(dd->engine);  in omap_des_probe()
1079 	omap_des_dma_cleanup(dd);  in omap_des_probe()
1081 	tasklet_kill(&dd->done_task);  in omap_des_probe()
1085 	dd = NULL;  in omap_des_probe()
1093 	struct omap_des_dev *dd = platform_get_drvdata(pdev);  in omap_des_remove()  local
1096 	if (!dd)  in omap_des_remove()
1100 	list_del(&dd->list);  in omap_des_remove()
1103 	for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)  in omap_des_remove()
1104 		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)  in omap_des_remove()
1106 					&dd->pdata->algs_info[i].algs_list[j]);  in omap_des_remove()
1108 	tasklet_kill(&dd->done_task);  in omap_des_remove()
1109 	omap_des_dma_cleanup(dd);  in omap_des_remove()
1110 	pm_runtime_disable(dd->dev);  in omap_des_remove()
1111 	dd = NULL;  in omap_des_remove()