From: "Mark A. Greer" Subject: [PATCH 06/10] crypto: omap-aes - Remove usage of private DMA API Date: Fri, 21 Dec 2012 10:04:56 -0700 Message-ID: <1356109500-11719-7-git-send-email-mgreer@animalcreek.com> References: <1356109500-11719-1-git-send-email-mgreer@animalcreek.com> Cc: linux-crypto@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Mark A. Greer" , Russell King , Dmitry Kasatkin To: davem@davemloft.net, herbert@gondor.apana.org.au Return-path: Received: from mail20.dotsterhost.com ([66.11.232.73]:49769 "EHLO mail20.dotsterhost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752532Ab2LURFO (ORCPT ); Fri, 21 Dec 2012 12:05:14 -0500 In-Reply-To: <1356109500-11719-1-git-send-email-mgreer@animalcreek.com> Sender: linux-crypto-owner@vger.kernel.org List-ID: From: "Mark A. Greer" Remove usage of the private OMAP DMA API. The dmaengine API will be used instead. CC: Russell King CC: Dmitry Kasatkin Signed-off-by: Mark A. Greer --- drivers/crypto/omap-aes.c | 133 ---------------------------------------------- 1 file changed, 133 deletions(-) diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index 14ec9e2..faf522f 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -12,8 +12,6 @@ * */ -#define OMAP_AES_DMA_PRIVATE - #define pr_fmt(fmt) "%s: " fmt, __func__ #include @@ -115,33 +113,21 @@ struct omap_aes_dev { struct ablkcipher_request *req; size_t total; struct scatterlist *in_sg; -#ifndef OMAP_AES_DMA_PRIVATE struct scatterlist in_sgl; -#endif size_t in_offset; struct scatterlist *out_sg; -#ifndef OMAP_AES_DMA_PRIVATE struct scatterlist out_sgl; -#endif size_t out_offset; size_t buflen; void *buf_in; size_t dma_size; int dma_in; -#ifdef OMAP_AES_DMA_PRIVATE - int dma_lch_in; -#else struct dma_chan *dma_lch_in; -#endif dma_addr_t dma_addr_in; void *buf_out; int dma_out; -#ifdef OMAP_AES_DMA_PRIVATE - int dma_lch_out; -#else struct dma_chan *dma_lch_out; -#endif dma_addr_t dma_addr_out; }; @@ -206,17 +192,10 @@ static int omap_aes_write_ctrl(struct omap_aes_dev *dd) return err; val = 0; -#ifdef OMAP_AES_DMA_PRIVATE - if (dd->dma_lch_out >= 0) - val |= AES_REG_MASK_DMA_OUT_EN; - if (dd->dma_lch_in >= 0) - val |= AES_REG_MASK_DMA_IN_EN; -#else if (dd->dma_lch_out != NULL) val |= AES_REG_MASK_DMA_OUT_EN; if (dd->dma_lch_in != NULL) val |= AES_REG_MASK_DMA_IN_EN; -#endif mask = AES_REG_MASK_DMA_IN_EN | AES_REG_MASK_DMA_OUT_EN; @@ -244,22 +223,6 @@ static int omap_aes_write_ctrl(struct omap_aes_dev *dd) omap_aes_write_mask(dd, AES_REG_CTRL, val, mask); -#ifdef OMAP_AES_DMA_PRIVATE - /* IN */ - omap_set_dma_dest_params(dd->dma_lch_in, 0, OMAP_DMA_AMODE_CONSTANT, - dd->phys_base + AES_REG_DATA, 0, 4); - - omap_set_dma_dest_burst_mode(dd->dma_lch_in, OMAP_DMA_DATA_BURST_4); - omap_set_dma_src_burst_mode(dd->dma_lch_in, OMAP_DMA_DATA_BURST_4); - - /* OUT */ - omap_set_dma_src_params(dd->dma_lch_out, 0, OMAP_DMA_AMODE_CONSTANT, - dd->phys_base + AES_REG_DATA, 0, 4); - - omap_set_dma_src_burst_mode(dd->dma_lch_out, OMAP_DMA_DATA_BURST_4); - omap_set_dma_dest_burst_mode(dd->dma_lch_out, OMAP_DMA_DATA_BURST_4); -#endif - return 0; } @@ -284,23 +247,6 @@ static struct omap_aes_dev *omap_aes_find_dev(struct omap_aes_ctx *ctx) return dd; } -#ifdef OMAP_AES_DMA_PRIVATE -static void omap_aes_dma_callback(int lch, u16 ch_status, void *data) -{ - struct omap_aes_dev *dd = data; - - if (ch_status != OMAP_DMA_BLOCK_IRQ) { - pr_err("omap-aes DMA error status: 0x%hx\n", ch_status); - dd->err = -EIO; - dd->flags &= ~FLAGS_INIT; /* request to re-initialize */ - } else if (lch == dd->dma_lch_in) { - return; - } - - /* dma_lch_out - completed */ - tasklet_schedule(&dd->done_task); -} -#else static void omap_aes_dma_out_callback(void *data) { struct omap_aes_dev *dd = data; @@ -308,22 +254,14 @@ static void omap_aes_dma_out_callback(void *data) /* dma_lch_out - completed */ tasklet_schedule(&dd->done_task); } -#endif static int omap_aes_dma_init(struct omap_aes_dev *dd) { int err = -ENOMEM; -#ifndef OMAP_AES_DMA_PRIVATE dma_cap_mask_t mask; -#endif -#ifdef OMAP_AES_DMA_PRIVATE - dd->dma_lch_out = -1; - dd->dma_lch_in = -1; -#else dd->dma_lch_out = NULL; dd->dma_lch_in = NULL; -#endif dd->buf_in = (void *)__get_free_pages(GFP_KERNEL, OMAP_AES_CACHE_SIZE); dd->buf_out = (void *)__get_free_pages(GFP_KERNEL, OMAP_AES_CACHE_SIZE); @@ -352,20 +290,6 @@ static int omap_aes_dma_init(struct omap_aes_dev *dd) goto err_map_out; } -#ifdef OMAP_AES_DMA_PRIVATE - err = omap_request_dma(dd->dma_in, "omap-aes-rx", - omap_aes_dma_callback, dd, &dd->dma_lch_in); - if (err) { - dev_err(dd->dev, "Unable to request DMA channel\n"); - goto err_dma_in; - } - err = omap_request_dma(dd->dma_out, "omap-aes-tx", - omap_aes_dma_callback, dd, &dd->dma_lch_out); - if (err) { - dev_err(dd->dev, "Unable to request DMA channel\n"); - goto err_dma_out; - } -#else dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); @@ -382,16 +306,11 @@ static int omap_aes_dma_init(struct omap_aes_dev *dd) dev_err(dd->dev, "Unable to request out DMA channel\n"); goto err_dma_out; } -#endif return 0; err_dma_out: -#ifdef OMAP_AES_DMA_PRIVATE - omap_free_dma(dd->dma_lch_in); -#else dma_release_channel(dd->dma_lch_in); -#endif err_dma_in: dma_unmap_single(dd->dev, dd->dma_addr_out, dd->buflen, DMA_FROM_DEVICE); @@ -408,13 +327,8 @@ err_alloc: static void omap_aes_dma_cleanup(struct omap_aes_dev *dd) { -#ifdef OMAP_AES_DMA_PRIVATE - omap_free_dma(dd->dma_lch_out); - omap_free_dma(dd->dma_lch_in); -#else dma_release_channel(dd->dma_lch_out); dma_release_channel(dd->dma_lch_in); -#endif dma_unmap_single(dd->dev, dd->dma_addr_out, dd->buflen, DMA_FROM_DEVICE); dma_unmap_single(dd->dev, dd->dma_addr_in, dd->buflen, DMA_TO_DEVICE); @@ -472,24 +386,15 @@ static int sg_copy(struct scatterlist **sg, size_t *offset, void *buf, return off; } -#ifdef OMAP_AES_DMA_PRIVATE -static int omap_aes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in, - dma_addr_t dma_addr_out, int length) -#else static int omap_aes_crypt_dma(struct crypto_tfm *tfm, struct scatterlist *in_sg, struct scatterlist *out_sg) -#endif { struct omap_aes_ctx *ctx = crypto_tfm_ctx(tfm); struct omap_aes_dev *dd = ctx->dd; -#ifdef OMAP_AES_DMA_PRIVATE - int len32; -#else struct dma_async_tx_descriptor *tx_in, *tx_out; struct dma_slave_config cfg; dma_addr_t dma_addr_in = sg_dma_address(in_sg); int ret, length = sg_dma_len(in_sg); -#endif pr_debug("len: %d\n", length); @@ -499,28 +404,6 @@ static int omap_aes_crypt_dma(struct crypto_tfm *tfm, dma_sync_single_for_device(dd->dev, dma_addr_in, length, DMA_TO_DEVICE); -#ifdef OMAP_AES_DMA_PRIVATE - len32 = DIV_ROUND_UP(length, sizeof(u32)); - - /* IN */ - omap_set_dma_transfer_params(dd->dma_lch_in, OMAP_DMA_DATA_TYPE_S32, - len32, 1, OMAP_DMA_SYNC_PACKET, dd->dma_in, - OMAP_DMA_DST_SYNC); - - omap_set_dma_src_params(dd->dma_lch_in, 0, OMAP_DMA_AMODE_POST_INC, - dma_addr_in, 0, 0); - - /* OUT */ - omap_set_dma_transfer_params(dd->dma_lch_out, OMAP_DMA_DATA_TYPE_S32, - len32, 1, OMAP_DMA_SYNC_PACKET, - dd->dma_out, OMAP_DMA_SRC_SYNC); - - omap_set_dma_dest_params(dd->dma_lch_out, 0, OMAP_DMA_AMODE_POST_INC, - dma_addr_out, 0, 0); - - omap_start_dma(dd->dma_lch_in); - omap_start_dma(dd->dma_lch_out); -#else memset(&cfg, 0, sizeof(cfg)); cfg.src_addr = dd->phys_base + AES_REG_DATA; @@ -573,7 +456,6 @@ static int omap_aes_crypt_dma(struct crypto_tfm *tfm, dma_async_issue_pending(dd->dma_lch_in); dma_async_issue_pending(dd->dma_lch_out); -#endif /* start DMA or disable idle mode */ omap_aes_write_mask(dd, AES_REG_MASK, AES_REG_MASK_START, @@ -589,10 +471,8 @@ static int omap_aes_crypt_dma_start(struct omap_aes_dev *dd) int err, fast = 0, in, out; size_t count; dma_addr_t addr_in, addr_out; -#ifndef OMAP_AES_DMA_PRIVATE struct scatterlist *in_sg, *out_sg; int len32; -#endif pr_debug("total: %d\n", dd->total); @@ -631,10 +511,8 @@ static int omap_aes_crypt_dma_start(struct omap_aes_dev *dd) addr_in = sg_dma_address(dd->in_sg); addr_out = sg_dma_address(dd->out_sg); -#ifndef OMAP_AES_DMA_PRIVATE in_sg = dd->in_sg; out_sg = dd->out_sg; -#endif dd->flags |= FLAGS_FAST; @@ -643,7 +521,6 @@ static int omap_aes_crypt_dma_start(struct omap_aes_dev *dd) count = sg_copy(&dd->in_sg, &dd->in_offset, dd->buf_in, dd->buflen, dd->total, 0); -#ifndef OMAP_AES_DMA_PRIVATE len32 = DIV_ROUND_UP(count, DMA_MIN) * DMA_MIN; /* @@ -664,7 +541,6 @@ static int omap_aes_crypt_dma_start(struct omap_aes_dev *dd) in_sg = &dd->in_sgl; out_sg = &dd->out_sgl; -#endif addr_in = dd->dma_addr_in; addr_out = dd->dma_addr_out; @@ -675,11 +551,7 @@ static int omap_aes_crypt_dma_start(struct omap_aes_dev *dd) dd->total -= count; -#ifdef OMAP_AES_DMA_PRIVATE - err = omap_aes_crypt_dma(tfm, addr_in, addr_out, count); -#else err = omap_aes_crypt_dma(tfm, in_sg, out_sg); -#endif if (err) { dma_unmap_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE); dma_unmap_sg(dd->dev, dd->out_sg, 1, DMA_TO_DEVICE); @@ -709,13 +581,8 @@ static int omap_aes_crypt_dma_stop(struct omap_aes_dev *dd) omap_aes_write_mask(dd, AES_REG_MASK, 0, AES_REG_MASK_START); -#ifdef OMAP_AES_DMA_PRIVATE - omap_stop_dma(dd->dma_lch_in); - omap_stop_dma(dd->dma_lch_out); -#else dmaengine_terminate_all(dd->dma_lch_in); dmaengine_terminate_all(dd->dma_lch_out); -#endif if (dd->flags & FLAGS_FAST) { dma_unmap_sg(dd->dev, dd->out_sg, 1, DMA_FROM_DEVICE); -- 1.7.12