50 #define _calc_walked(inout) (dd->inout##_walk.offset - dd->inout##_sg->offset)
52 #define DES_REG_KEY(dd, x)		((dd)->pdata->key_ofs - \  argument
55 #define DES_REG_IV(dd, x)		((dd)->pdata->iv_ofs + ((x) * 0x04))  argument
57 #define DES_REG_CTRL(dd)		((dd)->pdata->ctrl_ofs)  argument
64 #define DES_REG_DATA_N(dd, x)		((dd)->pdata->data_ofs + ((x) * 0x04))  argument
66 #define DES_REG_REV(dd)			((dd)->pdata->rev_ofs)  argument
68 #define DES_REG_MASK(dd)		((dd)->pdata->mask_ofs)  argument
72 #define DES_REG_IRQ_STATUS(dd)         ((dd)->pdata->irq_status_ofs)  argument
73 #define DES_REG_IRQ_ENABLE(dd)         ((dd)->pdata->irq_enable_ofs)  argument
90 	struct omap_des_dev *dd;  member
114 	void		(*trigger)(struct omap_des_dev *dd, int length);
178 #define omap_des_read(dd, offset)                               \  argument
181 	 _read_ret = __raw_readl(dd->io_base + offset);          \
187 static inline u32 omap_des_read(struct omap_des_dev *dd, u32 offset)  in omap_des_read()  argument
189 	return __raw_readl(dd->io_base + offset);  in omap_des_read()
194 #define omap_des_write(dd, offset, value)                               \  argument
198 		__raw_writel(value, dd->io_base + offset);              \
201 static inline void omap_des_write(struct omap_des_dev *dd, u32 offset,  in omap_des_write()  argument
204 	__raw_writel(value, dd->io_base + offset);  in omap_des_write()
208 static inline void omap_des_write_mask(struct omap_des_dev *dd, u32 offset,  in omap_des_write_mask()  argument
213 	val = omap_des_read(dd, offset);  in omap_des_write_mask()
216 	omap_des_write(dd, offset, val);  in omap_des_write_mask()
219 static void omap_des_write_n(struct omap_des_dev *dd, u32 offset,  in omap_des_write_n()  argument
223 		omap_des_write(dd, offset, *value);  in omap_des_write_n()
226 static int omap_des_hw_init(struct omap_des_dev *dd)  in omap_des_hw_init()  argument
235 	err = pm_runtime_get_sync(dd->dev);  in omap_des_hw_init()
237 		pm_runtime_put_noidle(dd->dev);  in omap_des_hw_init()
238 		dev_err(dd->dev, "%s: failed to get_sync(%d)\n", __func__, err);  in omap_des_hw_init()
242 	if (!(dd->flags & FLAGS_INIT)) {  in omap_des_hw_init()
243 		dd->flags |= FLAGS_INIT;  in omap_des_hw_init()
244 		dd->err = 0;  in omap_des_hw_init()
250 static int omap_des_write_ctrl(struct omap_des_dev *dd)  in omap_des_write_ctrl()  argument
256 	err = omap_des_hw_init(dd);  in omap_des_write_ctrl()
260 	key32 = dd->ctx->keylen / sizeof(u32);  in omap_des_write_ctrl()
264 		omap_des_write(dd, DES_REG_KEY(dd, i),  in omap_des_write_ctrl()
265 			       __le32_to_cpu(dd->ctx->key[i]));  in omap_des_write_ctrl()
268 	if ((dd->flags & FLAGS_CBC) && dd->req->info)  in omap_des_write_ctrl()
269 		omap_des_write_n(dd, DES_REG_IV(dd, 0), dd->req->info, 2);  in omap_des_write_ctrl()
271 	if (dd->flags & FLAGS_CBC)  in omap_des_write_ctrl()
273 	if (dd->flags & FLAGS_ENCRYPT)  in omap_des_write_ctrl()
280 	omap_des_write_mask(dd, DES_REG_CTRL(dd), val, mask);  in omap_des_write_ctrl()
285 static void omap_des_dma_trigger_omap4(struct omap_des_dev *dd, int length)  in omap_des_dma_trigger_omap4()  argument
289 	omap_des_write(dd, DES_REG_LENGTH_N(0), length);  in omap_des_dma_trigger_omap4()
291 	val = dd->pdata->dma_start;  in omap_des_dma_trigger_omap4()
293 	if (dd->dma_lch_out != NULL)  in omap_des_dma_trigger_omap4()
294 		val |= dd->pdata->dma_enable_out;  in omap_des_dma_trigger_omap4()
295 	if (dd->dma_lch_in != NULL)  in omap_des_dma_trigger_omap4()
296 		val |= dd->pdata->dma_enable_in;  in omap_des_dma_trigger_omap4()
298 	mask = dd->pdata->dma_enable_out | dd->pdata->dma_enable_in |  in omap_des_dma_trigger_omap4()
299 	       dd->pdata->dma_start;  in omap_des_dma_trigger_omap4()
301 	omap_des_write_mask(dd, DES_REG_MASK(dd), val, mask);  in omap_des_dma_trigger_omap4()
304 static void omap_des_dma_stop(struct omap_des_dev *dd)  in omap_des_dma_stop()  argument
308 	mask = dd->pdata->dma_enable_out | dd->pdata->dma_enable_in |  in omap_des_dma_stop()
309 	       dd->pdata->dma_start;  in omap_des_dma_stop()
311 	omap_des_write_mask(dd, DES_REG_MASK(dd), 0, mask);  in omap_des_dma_stop()
316 	struct omap_des_dev *dd = NULL, *tmp;  in omap_des_find_dev()  local
319 	if (!ctx->dd) {  in omap_des_find_dev()
322 			dd = tmp;  in omap_des_find_dev()
325 		ctx->dd = dd;  in omap_des_find_dev()
328 		dd = ctx->dd;  in omap_des_find_dev()
332 	return dd;  in omap_des_find_dev()
337 	struct omap_des_dev *dd = data;  in omap_des_dma_out_callback()  local
340 	tasklet_schedule(&dd->done_task);  in omap_des_dma_out_callback()
343 static int omap_des_dma_init(struct omap_des_dev *dd)  in omap_des_dma_init()  argument
347 	dd->dma_lch_out = NULL;  in omap_des_dma_init()
348 	dd->dma_lch_in = NULL;  in omap_des_dma_init()
350 	dd->dma_lch_in = dma_request_chan(dd->dev, "rx");  in omap_des_dma_init()
351 	if (IS_ERR(dd->dma_lch_in)) {  in omap_des_dma_init()
352 		dev_err(dd->dev, "Unable to request in DMA channel\n");  in omap_des_dma_init()
353 		return PTR_ERR(dd->dma_lch_in);  in omap_des_dma_init()
356 	dd->dma_lch_out = dma_request_chan(dd->dev, "tx");  in omap_des_dma_init()
357 	if (IS_ERR(dd->dma_lch_out)) {  in omap_des_dma_init()
358 		dev_err(dd->dev, "Unable to request out DMA channel\n");  in omap_des_dma_init()
359 		err = PTR_ERR(dd->dma_lch_out);  in omap_des_dma_init()
366 	dma_release_channel(dd->dma_lch_in);  in omap_des_dma_init()
371 static void omap_des_dma_cleanup(struct omap_des_dev *dd)  in omap_des_dma_cleanup()  argument
373 	if (dd->pio_only)  in omap_des_dma_cleanup()
376 	dma_release_channel(dd->dma_lch_out);  in omap_des_dma_cleanup()
377 	dma_release_channel(dd->dma_lch_in);  in omap_des_dma_cleanup()
385 	struct omap_des_dev *dd = ctx->dd;  in omap_des_crypt_dma()  local
390 	if (dd->pio_only) {  in omap_des_crypt_dma()
391 		scatterwalk_start(&dd->in_walk, dd->in_sg);  in omap_des_crypt_dma()
392 		scatterwalk_start(&dd->out_walk, dd->out_sg);  in omap_des_crypt_dma()
396 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x2);  in omap_des_crypt_dma()
400 	dma_sync_sg_for_device(dd->dev, dd->in_sg, in_sg_len, DMA_TO_DEVICE);  in omap_des_crypt_dma()
404 	cfg.src_addr = dd->phys_base + DES_REG_DATA_N(dd, 0);  in omap_des_crypt_dma()
405 	cfg.dst_addr = dd->phys_base + DES_REG_DATA_N(dd, 0);  in omap_des_crypt_dma()
412 	ret = dmaengine_slave_config(dd->dma_lch_in, &cfg);  in omap_des_crypt_dma()
414 		dev_err(dd->dev, "can't configure IN dmaengine slave: %d\n",  in omap_des_crypt_dma()
419 	tx_in = dmaengine_prep_slave_sg(dd->dma_lch_in, in_sg, in_sg_len,  in omap_des_crypt_dma()
423 		dev_err(dd->dev, "IN prep_slave_sg() failed\n");  in omap_des_crypt_dma()
428 	tx_in->callback_param = dd;  in omap_des_crypt_dma()
431 	ret = dmaengine_slave_config(dd->dma_lch_out, &cfg);  in omap_des_crypt_dma()
433 		dev_err(dd->dev, "can't configure OUT dmaengine slave: %d\n",  in omap_des_crypt_dma()
438 	tx_out = dmaengine_prep_slave_sg(dd->dma_lch_out, out_sg, out_sg_len,  in omap_des_crypt_dma()
442 		dev_err(dd->dev, "OUT prep_slave_sg() failed\n");  in omap_des_crypt_dma()
447 	tx_out->callback_param = dd;  in omap_des_crypt_dma()
452 	dma_async_issue_pending(dd->dma_lch_in);  in omap_des_crypt_dma()
453 	dma_async_issue_pending(dd->dma_lch_out);  in omap_des_crypt_dma()
456 	dd->pdata->trigger(dd, dd->total);  in omap_des_crypt_dma()
461 static int omap_des_crypt_dma_start(struct omap_des_dev *dd)  in omap_des_crypt_dma_start()  argument
464 					crypto_ablkcipher_reqtfm(dd->req));  in omap_des_crypt_dma_start()
467 	pr_debug("total: %d\n", dd->total);  in omap_des_crypt_dma_start()
469 	if (!dd->pio_only) {  in omap_des_crypt_dma_start()
470 		err = dma_map_sg(dd->dev, dd->in_sg, dd->in_sg_len,  in omap_des_crypt_dma_start()
473 			dev_err(dd->dev, "dma_map_sg() error\n");  in omap_des_crypt_dma_start()
477 		err = dma_map_sg(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_crypt_dma_start()
480 			dev_err(dd->dev, "dma_map_sg() error\n");  in omap_des_crypt_dma_start()
485 	err = omap_des_crypt_dma(tfm, dd->in_sg, dd->out_sg, dd->in_sg_len,  in omap_des_crypt_dma_start()
486 				 dd->out_sg_len);  in omap_des_crypt_dma_start()
487 	if (err && !dd->pio_only) {  in omap_des_crypt_dma_start()
488 		dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);  in omap_des_crypt_dma_start()
489 		dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_crypt_dma_start()
496 static void omap_des_finish_req(struct omap_des_dev *dd, int err)  in omap_des_finish_req()  argument
498 	struct ablkcipher_request *req = dd->req;  in omap_des_finish_req()
502 	crypto_finalize_ablkcipher_request(dd->engine, req, err);  in omap_des_finish_req()
504 	pm_runtime_mark_last_busy(dd->dev);  in omap_des_finish_req()
505 	pm_runtime_put_autosuspend(dd->dev);  in omap_des_finish_req()
508 static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)  in omap_des_crypt_dma_stop()  argument
510 	pr_debug("total: %d\n", dd->total);  in omap_des_crypt_dma_stop()
512 	omap_des_dma_stop(dd);  in omap_des_crypt_dma_stop()
514 	dmaengine_terminate_all(dd->dma_lch_in);  in omap_des_crypt_dma_stop()
515 	dmaengine_terminate_all(dd->dma_lch_out);  in omap_des_crypt_dma_stop()
520 static int omap_des_handle_queue(struct omap_des_dev *dd,  in omap_des_handle_queue()  argument
524 		return crypto_transfer_ablkcipher_request_to_engine(dd->engine, req);  in omap_des_handle_queue()
535 	struct omap_des_dev *dd = omap_des_find_dev(ctx);  in omap_des_prepare_req()  local
540 	if (!dd)  in omap_des_prepare_req()
544 	dd->req = req;  in omap_des_prepare_req()
545 	dd->total = req->nbytes;  in omap_des_prepare_req()
546 	dd->total_save = req->nbytes;  in omap_des_prepare_req()
547 	dd->in_sg = req->src;  in omap_des_prepare_req()
548 	dd->out_sg = req->dst;  in omap_des_prepare_req()
549 	dd->orig_out = req->dst;  in omap_des_prepare_req()
555 	ret = omap_crypto_align_sg(&dd->in_sg, dd->total, DES_BLOCK_SIZE,  in omap_des_prepare_req()
556 				   &dd->in_sgl, flags,  in omap_des_prepare_req()
557 				   FLAGS_IN_DATA_ST_SHIFT, &dd->flags);  in omap_des_prepare_req()
561 	ret = omap_crypto_align_sg(&dd->out_sg, dd->total, DES_BLOCK_SIZE,  in omap_des_prepare_req()
562 				   &dd->out_sgl, 0,  in omap_des_prepare_req()
563 				   FLAGS_OUT_DATA_ST_SHIFT, &dd->flags);  in omap_des_prepare_req()
567 	dd->in_sg_len = sg_nents_for_len(dd->in_sg, dd->total);  in omap_des_prepare_req()
568 	if (dd->in_sg_len < 0)  in omap_des_prepare_req()
569 		return dd->in_sg_len;  in omap_des_prepare_req()
571 	dd->out_sg_len = sg_nents_for_len(dd->out_sg, dd->total);  in omap_des_prepare_req()
572 	if (dd->out_sg_len < 0)  in omap_des_prepare_req()
573 		return dd->out_sg_len;  in omap_des_prepare_req()
578 	dd->flags = (dd->flags & ~FLAGS_MODE_MASK) | rctx->mode;  in omap_des_prepare_req()
580 	dd->ctx = ctx;  in omap_des_prepare_req()
581 	ctx->dd = dd;  in omap_des_prepare_req()
583 	return omap_des_write_ctrl(dd);  in omap_des_prepare_req()
592 	struct omap_des_dev *dd = omap_des_find_dev(ctx);  in omap_des_crypt_req()  local
594 	if (!dd)  in omap_des_crypt_req()
597 	return omap_des_crypt_dma_start(dd);  in omap_des_crypt_req()
602 	struct omap_des_dev *dd = (struct omap_des_dev *)data;  in omap_des_done_task()  local
606 	if (!dd->pio_only) {  in omap_des_done_task()
607 		dma_sync_sg_for_device(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_done_task()
609 		dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);  in omap_des_done_task()
610 		dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len,  in omap_des_done_task()
612 		omap_des_crypt_dma_stop(dd);  in omap_des_done_task()
615 	omap_crypto_cleanup(&dd->in_sgl, NULL, 0, dd->total_save,  in omap_des_done_task()
616 			    FLAGS_IN_DATA_ST_SHIFT, dd->flags);  in omap_des_done_task()
618 	omap_crypto_cleanup(&dd->out_sgl, dd->orig_out, 0, dd->total_save,  in omap_des_done_task()
619 			    FLAGS_OUT_DATA_ST_SHIFT, dd->flags);  in omap_des_done_task()
621 	omap_des_finish_req(dd, 0);  in omap_des_done_task()
631 	struct omap_des_dev *dd;  in omap_des_crypt()  local
642 	dd = omap_des_find_dev(ctx);  in omap_des_crypt()
643 	if (!dd)  in omap_des_crypt()
648 	return omap_des_handle_queue(dd, req);  in omap_des_crypt()
851 	struct omap_des_dev *dd = dev_id;  in omap_des_irq()  local
855 	status = omap_des_read(dd, DES_REG_IRQ_STATUS(dd));  in omap_des_irq()
857 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x0);  in omap_des_irq()
859 		BUG_ON(!dd->in_sg);  in omap_des_irq()
861 		BUG_ON(_calc_walked(in) > dd->in_sg->length);  in omap_des_irq()
863 		src = sg_virt(dd->in_sg) + _calc_walked(in);  in omap_des_irq()
866 			omap_des_write(dd, DES_REG_DATA_N(dd, i), *src);  in omap_des_irq()
868 			scatterwalk_advance(&dd->in_walk, 4);  in omap_des_irq()
869 			if (dd->in_sg->length == _calc_walked(in)) {  in omap_des_irq()
870 				dd->in_sg = sg_next(dd->in_sg);  in omap_des_irq()
871 				if (dd->in_sg) {  in omap_des_irq()
872 					scatterwalk_start(&dd->in_walk,  in omap_des_irq()
873 							  dd->in_sg);  in omap_des_irq()
874 					src = sg_virt(dd->in_sg) +  in omap_des_irq()
884 		omap_des_write(dd, DES_REG_IRQ_STATUS(dd), status);  in omap_des_irq()
887 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x4);  in omap_des_irq()
890 		omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x0);  in omap_des_irq()
892 		BUG_ON(!dd->out_sg);  in omap_des_irq()
894 		BUG_ON(_calc_walked(out) > dd->out_sg->length);  in omap_des_irq()
896 		dst = sg_virt(dd->out_sg) + _calc_walked(out);  in omap_des_irq()
899 			*dst = omap_des_read(dd, DES_REG_DATA_N(dd, i));  in omap_des_irq()
900 			scatterwalk_advance(&dd->out_walk, 4);  in omap_des_irq()
901 			if (dd->out_sg->length == _calc_walked(out)) {  in omap_des_irq()
902 				dd->out_sg = sg_next(dd->out_sg);  in omap_des_irq()
903 				if (dd->out_sg) {  in omap_des_irq()
904 					scatterwalk_start(&dd->out_walk,  in omap_des_irq()
905 							  dd->out_sg);  in omap_des_irq()
906 					dst = sg_virt(dd->out_sg) +  in omap_des_irq()
914 		BUG_ON(dd->total < DES_BLOCK_SIZE);  in omap_des_irq()
916 		dd->total -= DES_BLOCK_SIZE;  in omap_des_irq()
920 		omap_des_write(dd, DES_REG_IRQ_STATUS(dd), status);  in omap_des_irq()
922 		if (!dd->total)  in omap_des_irq()
924 			tasklet_schedule(&dd->done_task);  in omap_des_irq()
927 			omap_des_write(dd, DES_REG_IRQ_ENABLE(dd), 0x2);  in omap_des_irq()
942 static int omap_des_get_of(struct omap_des_dev *dd,  in omap_des_get_of()  argument
946 	dd->pdata = of_device_get_match_data(&pdev->dev);  in omap_des_get_of()
947 	if (!dd->pdata) {  in omap_des_get_of()
955 static int omap_des_get_of(struct omap_des_dev *dd,  in omap_des_get_of()  argument
962 static int omap_des_get_pdev(struct omap_des_dev *dd,  in omap_des_get_pdev()  argument
966 	dd->pdata = pdev->dev.platform_data;  in omap_des_get_pdev()
974 	struct omap_des_dev *dd;  in omap_des_probe()  local
980 	dd = devm_kzalloc(dev, sizeof(struct omap_des_dev), GFP_KERNEL);  in omap_des_probe()
981 	if (dd == NULL) {  in omap_des_probe()
985 	dd->dev = dev;  in omap_des_probe()
986 	platform_set_drvdata(pdev, dd);  in omap_des_probe()
994 	err = (dev->of_node) ? omap_des_get_of(dd, pdev) :  in omap_des_probe()
995 			       omap_des_get_pdev(dd, pdev);  in omap_des_probe()
999 	dd->io_base = devm_ioremap_resource(dev, res);  in omap_des_probe()
1000 	if (IS_ERR(dd->io_base)) {  in omap_des_probe()
1001 		err = PTR_ERR(dd->io_base);  in omap_des_probe()
1004 	dd->phys_base = res->start;  in omap_des_probe()
1013 		dev_err(dd->dev, "%s: failed to get_sync(%d)\n", __func__, err);  in omap_des_probe()
1017 	omap_des_dma_stop(dd);  in omap_des_probe()
1019 	reg = omap_des_read(dd, DES_REG_REV(dd));  in omap_des_probe()
1024 		 (reg & dd->pdata->major_mask) >> dd->pdata->major_shift,  in omap_des_probe()
1025 		 (reg & dd->pdata->minor_mask) >> dd->pdata->minor_shift);  in omap_des_probe()
1027 	tasklet_init(&dd->done_task, omap_des_done_task, (unsigned long)dd);  in omap_des_probe()
1029 	err = omap_des_dma_init(dd);  in omap_des_probe()
1032 	} else if (err && DES_REG_IRQ_STATUS(dd) && DES_REG_IRQ_ENABLE(dd)) {  in omap_des_probe()
1033 		dd->pio_only = 1;  in omap_des_probe()
1043 				dev_name(dev), dd);  in omap_des_probe()
1051 	INIT_LIST_HEAD(&dd->list);  in omap_des_probe()
1053 	list_add_tail(&dd->list, &dev_list);  in omap_des_probe()
1057 	dd->engine = crypto_engine_alloc_init(dev, 1);  in omap_des_probe()
1058 	if (!dd->engine) {  in omap_des_probe()
1063 	err = crypto_engine_start(dd->engine);  in omap_des_probe()
1067 	for (i = 0; i < dd->pdata->algs_info_size; i++) {  in omap_des_probe()
1068 		for (j = 0; j < dd->pdata->algs_info[i].size; j++) {  in omap_des_probe()
1069 			algp = &dd->pdata->algs_info[i].algs_list[j];  in omap_des_probe()
1078 			dd->pdata->algs_info[i].registered++;  in omap_des_probe()
1085 	for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)  in omap_des_probe()
1086 		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)  in omap_des_probe()
1088 					&dd->pdata->algs_info[i].algs_list[j]);  in omap_des_probe()
1091 	if (dd->engine)  in omap_des_probe()
1092 		crypto_engine_exit(dd->engine);  in omap_des_probe()
1094 	omap_des_dma_cleanup(dd);  in omap_des_probe()
1096 	tasklet_kill(&dd->done_task);  in omap_des_probe()
1100 	dd = NULL;  in omap_des_probe()
1108 	struct omap_des_dev *dd = platform_get_drvdata(pdev);  in omap_des_remove()  local
1111 	if (!dd)  in omap_des_remove()
1115 	list_del(&dd->list);  in omap_des_remove()
1118 	for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)  in omap_des_remove()
1119 		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)  in omap_des_remove()
1121 					&dd->pdata->algs_info[i].algs_list[j]);  in omap_des_remove()
1123 	tasklet_kill(&dd->done_task);  in omap_des_remove()
1124 	omap_des_dma_cleanup(dd);  in omap_des_remove()
1125 	pm_runtime_disable(dd->dev);  in omap_des_remove()
1126 	dd = NULL;  in omap_des_remove()