From dd49a69e8eb1423e4d434081a7785bc1b8b8948a Mon Sep 17 00:00:00 2001 From: "Mark A. Greer" Date: Fri, 21 Dec 2012 10:04:05 -0700 Subject: [PATCH] crypto: omap-sham - Remove usage of private DMA API 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 Signed-off-by: Herbert Xu --- drivers/crypto/omap-sham.c | 109 ------------------------------------- 1 file changed, 109 deletions(-) diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index f54ceb8f5b24..f6b270ed7d62 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -13,8 +13,6 @@ * Some ideas are from old omap-sha1-md5.c driver. */ -#define OMAP_SHAM_DMA_PRIVATE - #define pr_fmt(fmt) "%s: " fmt, __func__ #include @@ -113,9 +111,7 @@ struct omap_sham_reqctx { /* walk state */ struct scatterlist *sg; -#ifndef OMAP_SHAM_DMA_PRIVATE struct scatterlist sgl; -#endif unsigned int offset; /* offset in current sg */ unsigned int total; /* total request */ @@ -149,12 +145,7 @@ struct omap_sham_dev { int irq; spinlock_t lock; int err; -#ifdef OMAP_SHAM_DMA_PRIVATE - int dma; - int dma_lch; -#else struct dma_chan *dma_lch; -#endif struct tasklet_struct done_task; unsigned long flags; @@ -324,7 +315,6 @@ static int omap_sham_xmit_cpu(struct omap_sham_dev *dd, const u8 *buf, return -EINPROGRESS; } -#ifndef OMAP_SHAM_DMA_PRIVATE static void omap_sham_dma_callback(void *param) { struct omap_sham_dev *dd = param; @@ -332,34 +322,18 @@ static void omap_sham_dma_callback(void *param) set_bit(FLAGS_DMA_READY, &dd->flags); tasklet_schedule(&dd->done_task); } -#endif static int omap_sham_xmit_dma(struct omap_sham_dev *dd, dma_addr_t dma_addr, size_t length, int final, int is_sg) { struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); -#ifdef OMAP_SHAM_DMA_PRIVATE - int len32; -#else struct dma_async_tx_descriptor *tx; struct dma_slave_config cfg; int len32, ret; -#endif dev_dbg(dd->dev, "xmit_dma: digcnt: %d, length: %d, final: %d\n", ctx->digcnt, length, final); -#ifdef OMAP_SHAM_DMA_PRIVATE - len32 = DIV_ROUND_UP(length, sizeof(u32)); - - omap_set_dma_transfer_params(dd->dma_lch, OMAP_DMA_DATA_TYPE_S32, len32, - 1, OMAP_DMA_SYNC_PACKET, dd->dma, - OMAP_DMA_DST_SYNC_PREFETCH); - - omap_set_dma_src_params(dd->dma_lch, 0, OMAP_DMA_AMODE_POST_INC, - dma_addr, 0, 0); - -#else memset(&cfg, 0, sizeof(cfg)); cfg.dst_addr = dd->phys_base + SHA_REG_DIN(0); @@ -401,7 +375,6 @@ static int omap_sham_xmit_dma(struct omap_sham_dev *dd, dma_addr_t dma_addr, tx->callback = omap_sham_dma_callback; tx->callback_param = dd; -#endif omap_sham_write_ctrl(dd, length, final, 1); @@ -412,12 +385,8 @@ static int omap_sham_xmit_dma(struct omap_sham_dev *dd, dma_addr_t dma_addr, set_bit(FLAGS_DMA_ACTIVE, &dd->flags); -#ifdef OMAP_SHAM_DMA_PRIVATE - omap_start_dma(dd->dma_lch); -#else dmaengine_submit(tx); dma_async_issue_pending(dd->dma_lch); -#endif return -EINPROGRESS; } @@ -523,7 +492,6 @@ static int omap_sham_update_dma_start(struct omap_sham_dev *dd) if (ctx->bufcnt || ctx->offset) return omap_sham_update_dma_slow(dd); -#ifndef OMAP_SHAM_DMA_PRIVATE /* * Don't use the sg interface when the transfer size is less * than the number of elements in a DMA frame. Otherwise, @@ -532,7 +500,6 @@ static int omap_sham_update_dma_start(struct omap_sham_dev *dd) */ if (ctx->total < (DST_MAXBURST * sizeof(u32))) return omap_sham_update_dma_slow(dd); -#endif dev_dbg(dd->dev, "fast: digcnt: %d, bufcnt: %u, total: %u\n", ctx->digcnt, ctx->bufcnt, ctx->total); @@ -594,11 +561,7 @@ static int omap_sham_update_dma_stop(struct omap_sham_dev *dd) { struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); -#ifdef OMAP_SHAM_DMA_PRIVATE - omap_stop_dma(dd->dma_lch); -#else dmaengine_terminate_all(dd->dma_lch); -#endif if (ctx->flags & BIT(FLAGS_SG)) { dma_unmap_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE); @@ -802,18 +765,6 @@ static int omap_sham_handle_queue(struct omap_sham_dev *dd, if (err) goto err1; -#ifdef OMAP_SHAM_DMA_PRIVATE - omap_set_dma_dest_params(dd->dma_lch, 0, - OMAP_DMA_AMODE_CONSTANT, - dd->phys_base + SHA_REG_DIN(0), 0, 16); - - omap_set_dma_dest_burst_mode(dd->dma_lch, - OMAP_DMA_DATA_BURST_16); - - omap_set_dma_src_burst_mode(dd->dma_lch, - OMAP_DMA_DATA_BURST_4); -#endif - if (ctx->digcnt) /* request has changed - restore hash */ omap_sham_copy_hash(req, 0); @@ -1204,55 +1155,13 @@ static irqreturn_t omap_sham_irq(int irq, void *dev_id) return IRQ_HANDLED; } -#ifdef OMAP_SHAM_DMA_PRIVATE -static void omap_sham_dma_callback(int lch, u16 ch_status, void *data) -{ - struct omap_sham_dev *dd = data; - - if (ch_status != OMAP_DMA_BLOCK_IRQ) { - pr_err("omap-sham DMA error status: 0x%hx\n", ch_status); - dd->err = -EIO; - clear_bit(FLAGS_INIT, &dd->flags);/* request to re-initialize */ - } - - set_bit(FLAGS_DMA_READY, &dd->flags); - tasklet_schedule(&dd->done_task); -} - -static int omap_sham_dma_init(struct omap_sham_dev *dd) -{ - int err; - - dd->dma_lch = -1; - - err = omap_request_dma(dd->dma, dev_name(dd->dev), - omap_sham_dma_callback, dd, &dd->dma_lch); - if (err) { - dev_err(dd->dev, "Unable to request DMA channel\n"); - return err; - } - - return 0; -} - -static void omap_sham_dma_cleanup(struct omap_sham_dev *dd) -{ - if (dd->dma_lch >= 0) { - omap_free_dma(dd->dma_lch); - dd->dma_lch = -1; - } -} -#endif - static int __devinit omap_sham_probe(struct platform_device *pdev) { struct omap_sham_dev *dd; struct device *dev = &pdev->dev; struct resource *res; -#ifndef OMAP_SHAM_DMA_PRIVATE dma_cap_mask_t mask; unsigned dma_chan; -#endif int err, i, j; dd = kzalloc(sizeof(struct omap_sham_dev), GFP_KERNEL); @@ -1287,11 +1196,7 @@ static int __devinit omap_sham_probe(struct platform_device *pdev) err = -ENODEV; goto res_err; } -#ifdef OMAP_SHAM_DMA_PRIVATE - dd->dma = res->start; -#else dma_chan = res->start; -#endif /* Get the IRQ */ dd->irq = platform_get_irq(pdev, 0); @@ -1308,11 +1213,6 @@ static int __devinit omap_sham_probe(struct platform_device *pdev) goto res_err; } -#ifdef OMAP_SHAM_DMA_PRIVATE - err = omap_sham_dma_init(dd); - if (err) - goto dma_err; -#else dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); @@ -1323,7 +1223,6 @@ static int __devinit omap_sham_probe(struct platform_device *pdev) err = -ENXIO; goto dma_err; } -#endif dd->io_base = ioremap(dd->phys_base, SZ_4K); if (!dd->io_base) { @@ -1359,11 +1258,7 @@ err_algs: iounmap(dd->io_base); pm_runtime_disable(dev); io_err: -#ifdef OMAP_SHAM_DMA_PRIVATE - omap_sham_dma_cleanup(dd); -#else dma_release_channel(dd->dma_lch); -#endif dma_err: if (dd->irq >= 0) free_irq(dd->irq, dd); @@ -1392,11 +1287,7 @@ static int __devexit omap_sham_remove(struct platform_device *pdev) tasklet_kill(&dd->done_task); iounmap(dd->io_base); pm_runtime_disable(&pdev->dev); -#ifdef OMAP_SHAM_DMA_PRIVATE - omap_sham_dma_cleanup(dd); -#else dma_release_channel(dd->dma_lch); -#endif if (dd->irq >= 0) free_irq(dd->irq, dd); kfree(dd); -- 2.20.1