imx23: rename imx23 to mxs for upcoming imx23/28 support

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>

SVN-Revision: 38394

1 files changed, 0 insertions, 957 deletions

diff --git a/target/linux/imx23/patches/105-imx23-dcp.patch b/target/linux/imx23/patches/105-imx23-dcp.patch
deleted file mode 100644
index ae74209775..0000000000
--- a/target/linux/imx23/patches/105-imx23-dcp.patch
+++ /dev/null
@@ -1,957 +0,0 @@
---- a/drivers/crypto/Kconfig
-+++ b/drivers/crypto/Kconfig
-@@ -287,6 +287,16 @@ config CRYPTO_DEV_SAHARA
- 	  This option enables support for the SAHARA HW crypto accelerator
- 	  found in some Freescale i.MX chips.
- 
-+config CRYPTO_DEV_DCP
-+       tristate "Support for the DCP engine"
-+       depends on ARCH_MXS && OF
-+       select CRYPTO_BLKCIPHER
-+       select CRYPTO_AES
-+       select CRYPTO_CBC
-+       help
-+         This options enables support for the hardware crypto-acceleration
-+         capabilities of the DCP co-processor
-+
- config CRYPTO_DEV_S5P
- 	tristate "Support for Samsung S5PV210 crypto accelerator"
- 	depends on ARCH_S5PV210
---- a/drivers/crypto/Makefile
-+++ b/drivers/crypto/Makefile
-@@ -13,6 +13,7 @@ obj-$(CONFIG_CRYPTO_DEV_OMAP_SHAM) += om
- obj-$(CONFIG_CRYPTO_DEV_OMAP_AES) += omap-aes.o
- obj-$(CONFIG_CRYPTO_DEV_PICOXCELL) += picoxcell_crypto.o
- obj-$(CONFIG_CRYPTO_DEV_SAHARA) += sahara.o
-+obj-$(CONFIG_CRYPTO_DEV_DCP) += dcp.o
- obj-$(CONFIG_CRYPTO_DEV_S5P) += s5p-sss.o
- obj-$(CONFIG_CRYPTO_DEV_TEGRA_AES) += tegra-aes.o
- obj-$(CONFIG_CRYPTO_DEV_UX500) += ux500/
---- /dev/null
-+++ b/drivers/crypto/dcp.c
-@@ -0,0 +1,925 @@
-+/*
-+ * Cryptographic API.
-+ *
-+ * Support for DCP cryptographic accelerator.
-+ *
-+ * Copyright (c) 2013
-+ * Author: Tobias Rauter <tobias.rau...@gmail.com>
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as published
-+ * by the Free Software Foundation.
-+ *
-+ * Based on tegra-aes.c, dcp.c (from freescale SDK) and sahara.c
-+ */
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/errno.h>
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/io.h>
-+#include <linux/mutex.h>
-+#include <linux/interrupt.h>
-+#include <linux/completion.h>
-+#include <linux/workqueue.h>
-+#include <linux/delay.h>
-+#include <linux/crypto.h>
-+#include <linux/miscdevice.h>
-+
-+#include <crypto/scatterwalk.h>
-+#include <crypto/aes.h>
-+
-+
-+/* IOCTL for DCP OTP Key AES - taken from Freescale's SDK*/
-+#define DBS_IOCTL_BASE   'd'
-+#define DBS_ENC        _IOW(DBS_IOCTL_BASE, 0x00, uint8_t[16])
-+#define DBS_DEC _IOW(DBS_IOCTL_BASE, 0x01, uint8_t[16])
-+
-+/* DCP channel used for AES */
-+#define USED_CHANNEL 1
-+/* Ring Buffers' maximum size */
-+#define DCP_MAX_PKG 20
-+
-+/* Control Register */
-+#define DCP_REG_CTRL 0x000
-+#define DCP_CTRL_SFRST (1<<31)
-+#define DCP_CTRL_CLKGATE (1<<30)
-+#define DCP_CTRL_CRYPTO_PRESENT (1<<29)
-+#define DCP_CTRL_SHA_PRESENT (1<<28)
-+#define DCP_CTRL_GATHER_RES_WRITE (1<<23)
-+#define DCP_CTRL_ENABLE_CONTEXT_CACHE (1<<22)
-+#define DCP_CTRL_ENABLE_CONTEXT_SWITCH (1<<21)
-+#define DCP_CTRL_CH_IRQ_E_0 0x01
-+#define DCP_CTRL_CH_IRQ_E_1 0x02
-+#define DCP_CTRL_CH_IRQ_E_2 0x04
-+#define DCP_CTRL_CH_IRQ_E_3 0x08
-+
-+/* Status register */
-+#define DCP_REG_STAT 0x010
-+#define DCP_STAT_OTP_KEY_READY (1<<28)
-+#define DCP_STAT_CUR_CHANNEL(stat) ((stat>>24)&0x0F)
-+#define DCP_STAT_READY_CHANNEL(stat) ((stat>>16)&0x0F)
-+#define DCP_STAT_IRQ(stat) (stat&0x0F)
-+#define DCP_STAT_CHAN_0 (0x01)
-+#define DCP_STAT_CHAN_1 (0x02)
-+#define DCP_STAT_CHAN_2 (0x04)
-+#define DCP_STAT_CHAN_3 (0x08)
-+
-+/* Channel Control Register */
-+#define DCP_REG_CHAN_CTRL 0x020
-+#define DCP_CHAN_CTRL_CH0_IRQ_MERGED (1<<16)
-+#define DCP_CHAN_CTRL_HIGH_PRIO_0 (0x0100)
-+#define DCP_CHAN_CTRL_HIGH_PRIO_1 (0x0200)
-+#define DCP_CHAN_CTRL_HIGH_PRIO_2 (0x0400)
-+#define DCP_CHAN_CTRL_HIGH_PRIO_3 (0x0800)
-+#define DCP_CHAN_CTRL_ENABLE_0 (0x01)
-+#define DCP_CHAN_CTRL_ENABLE_1 (0x02)
-+#define DCP_CHAN_CTRL_ENABLE_2 (0x04)
-+#define DCP_CHAN_CTRL_ENABLE_3 (0x08)
-+
-+/*
-+ * Channel Registers:
-+ * The DCP has 4 channels. Each of this channels
-+ * has 4 registers (command pointer, semaphore, status and options).
-+ * The address of register REG of channel CHAN is obtained by
-+ * dcp_chan_reg(REG, CHAN)
-+ */
-+#define DCP_REG_CHAN_PTR       0x00000100
-+#define DCP_REG_CHAN_SEMA      0x00000110
-+#define DCP_REG_CHAN_STAT      0x00000120
-+#define DCP_REG_CHAN_OPT       0x00000130
-+
-+#define DCP_CHAN_STAT_NEXT_CHAIN_IS_0  0x010000
-+#define DCP_CHAN_STAT_NO_CHAIN         0x020000
-+#define DCP_CHAN_STAT_CONTEXT_ERROR    0x030000
-+#define DCP_CHAN_STAT_PAYLOAD_ERROR    0x040000
-+#define DCP_CHAN_STAT_INVALID_MODE     0x050000
-+#define DCP_CHAN_STAT_PAGEFAULT                0x40
-+#define DCP_CHAN_STAT_DST              0x20
-+#define DCP_CHAN_STAT_SRC              0x10
-+#define DCP_CHAN_STAT_PACKET           0x08
-+#define DCP_CHAN_STAT_SETUP            0x04
-+#define DCP_CHAN_STAT_MISMATCH         0x02
-+
-+/* hw packet control*/
-+
-+#define DCP_PKT_PAYLOAD_KEY    (1<<11)
-+#define DCP_PKT_OTP_KEY                (1<<10)
-+#define DCP_PKT_CIPHER_INIT    (1<<9)
-+#define DCP_PKG_CIPHER_ENCRYPT (1<<8)
-+#define DCP_PKT_CIPHER_ENABLE  (1<<5)
-+#define DCP_PKT_DECR_SEM       (1<<1)
-+#define DCP_PKT_CHAIN          (1<<2)
-+#define DCP_PKT_IRQ            1
-+
-+#define DCP_PKT_MODE_CBC       (1<<4)
-+#define DCP_PKT_KEYSELECT_OTP  (0xFF<<8)
-+
-+/* cipher flags */
-+#define DCP_ENC                0x0001
-+#define DCP_DEC                0x0002
-+#define DCP_ECB                0x0004
-+#define DCP_CBC                0x0008
-+#define DCP_CBC_INIT   0x0010
-+#define DCP_NEW_KEY    0x0040
-+#define DCP_OTP_KEY    0x0080
-+#define DCP_AES                0x1000
-+
-+/* DCP Flags */
-+#define DCP_FLAG_BUSY  0x01
-+#define DCP_FLAG_PRODUCING     0x02
-+
-+/* clock defines */
-+#define CLOCK_ON       1
-+#define CLOCK_OFF      0
-+
-+struct dcp_dev_req_ctx {
-+       int mode;
-+};
-+
-+struct dcp_op {
-+       unsigned int            flags;
-+       u8                      key[AES_KEYSIZE_128];
-+       int                     keylen;
-+
-+       struct ablkcipher_request       *req;
-+       struct crypto_ablkcipher        *fallback;
-+
-+       uint32_t stat;
-+       uint32_t pkt1;
-+       uint32_t pkt2;
-+       struct ablkcipher_walk walk;
-+};
-+
-+struct dcp_dev {
-+       struct device *dev;
-+       void __iomem *dcp_regs_base;
-+
-+       int dcp_vmi_irq;
-+       int dcp_irq;
-+
-+       spinlock_t queue_lock;
-+       struct crypto_queue queue;
-+
-+       uint32_t pkt_produced;
-+       uint32_t pkt_consumed;
-+
-+       struct dcp_hw_packet *hw_pkg[DCP_MAX_PKG];
-+       dma_addr_t hw_phys_pkg;
-+
-+       /* [KEY][IV] Both with 16 Bytes */
-+       u8 *payload_base;
-+       dma_addr_t payload_base_dma;
-+
-+
-+       struct tasklet_struct   done_task;
-+       struct tasklet_struct   queue_task;
-+       struct timer_list       watchdog;
-+
-+       unsigned long           flags;
-+
-+       struct dcp_op *ctx;
-+
-+       struct miscdevice dcp_bootstream_misc;
-+};
-+
-+struct dcp_hw_packet {
-+       uint32_t next;
-+       uint32_t pkt1;
-+       uint32_t pkt2;
-+       uint32_t src;
-+       uint32_t dst;
-+       uint32_t size;
-+       uint32_t payload;
-+       uint32_t stat;
-+};
-+
-+struct dcp_dev *global_dev;
-+
-+static inline u32 dcp_chan_reg(u32 reg, int chan)
-+{
-+       return reg + (chan) * 0x40;
-+}
-+
-+static inline void dcp_write(struct dcp_dev *dev, u32 data, u32 reg)
-+{
-+       writel(data, dev->dcp_regs_base + reg);
-+}
-+
-+static inline void dcp_set(struct dcp_dev *dev, u32 data, u32 reg)
-+{
-+       writel(data, dev->dcp_regs_base + (reg | 0x04));
-+}
-+
-+static inline void dcp_clear(struct dcp_dev *dev, u32 data, u32 reg)
-+{
-+       writel(data, dev->dcp_regs_base + (reg | 0x08));
-+}
-+
-+static inline void dcp_toggle(struct dcp_dev *dev, u32 data, u32 reg)
-+{
-+       writel(data, dev->dcp_regs_base + (reg | 0x0C));
-+}
-+
-+static inline unsigned int dcp_read(struct dcp_dev *dev, u32 reg)
-+{
-+       return readl(dev->dcp_regs_base + reg);
-+}
-+
-+void dcp_dma_unmap(struct dcp_dev *dev, struct dcp_hw_packet *pkt)
-+{
-+       dma_unmap_page(dev->dev, pkt->src, pkt->size, DMA_TO_DEVICE);
-+       dma_unmap_page(dev->dev, pkt->dst, pkt->size, DMA_FROM_DEVICE);
-+       dev_dbg(dev->dev, "unmap packet %x", (unsigned int) pkt);
-+}
-+
-+int dcp_dma_map(struct dcp_dev *dev,
-+       struct ablkcipher_walk *walk, struct dcp_hw_packet *pkt)
-+{
-+       dev_dbg(dev->dev, "map packet %x", (unsigned int) pkt);
-+       /* align to length = 16 */
-+       pkt->size = walk->nbytes - (walk->nbytes % 16);
-+
-+       pkt->src = dma_map_page(dev->dev, walk->src.page, walk->src.offset,
-+               pkt->size, DMA_TO_DEVICE);
-+
-+       if (pkt->src == 0) {
-+               dev_err(dev->dev, "Unable to map src");
-+               return -ENOMEM;
-+       }
-+
-+       pkt->dst = dma_map_page(dev->dev, walk->dst.page, walk->dst.offset,
-+               pkt->size, DMA_FROM_DEVICE);
-+
-+       if (pkt->dst == 0) {
-+               dev_err(dev->dev, "Unable to map dst");
-+               dma_unmap_page(dev->dev, pkt->src, pkt->size, DMA_TO_DEVICE);
-+               return -ENOMEM;
-+       }
-+
-+       return 0;
-+}
-+
-+static void dcp_op_one(struct dcp_dev *dev, struct dcp_hw_packet *pkt,
-+                       uint8_t last)
-+{
-+       struct dcp_op *ctx = dev->ctx;
-+       pkt->pkt1 = ctx->pkt1;
-+       pkt->pkt2 = ctx->pkt2;
-+
-+       pkt->payload = (u32) dev->payload_base_dma;
-+       pkt->stat = 0;
-+
-+       if (ctx->flags & DCP_CBC_INIT) {
-+               pkt->pkt1 |= DCP_PKT_CIPHER_INIT;
-+               ctx->flags &= ~DCP_CBC_INIT;
-+       }
-+
-+       mod_timer(&dev->watchdog, jiffies + msecs_to_jiffies(500));
-+       pkt->pkt1 |= DCP_PKT_IRQ;
-+       if (!last)
-+               pkt->pkt1 |= DCP_PKT_CHAIN;
-+
-+       dev->pkt_produced++;
-+
-+       dcp_write(dev, 1,
-+               dcp_chan_reg(DCP_REG_CHAN_SEMA, USED_CHANNEL));
-+}
-+
-+static void dcp_op_proceed(struct dcp_dev *dev)
-+{
-+       struct dcp_op *ctx = dev->ctx;
-+       struct dcp_hw_packet *pkt;
-+
-+       while (ctx->walk.nbytes) {
-+               int err = 0;
-+
-+               pkt = dev->hw_pkg[dev->pkt_produced % DCP_MAX_PKG];
-+               err = dcp_dma_map(dev, &ctx->walk, pkt);
-+               if (err) {
-+                       dev->ctx->stat |= err;
-+                       /* start timer to wait for already set up calls */
-+                       mod_timer(&dev->watchdog,
-+                               jiffies + msecs_to_jiffies(500));
-+                       break;
-+               }
-+
-+
-+               err = ctx->walk.nbytes - pkt->size;
-+               ablkcipher_walk_done(dev->ctx->req, &dev->ctx->walk, err);
-+
-+               dcp_op_one(dev, pkt, ctx->walk.nbytes == 0);
-+               /* we have to wait if no space is left in buffer */
-+               if (dev->pkt_produced - dev->pkt_consumed == DCP_MAX_PKG)
-+                       break;
-+       }
-+       clear_bit(DCP_FLAG_PRODUCING, &dev->flags);
-+}
-+
-+static void dcp_op_start(struct dcp_dev *dev, uint8_t use_walk)
-+{
-+       struct dcp_op *ctx = dev->ctx;
-+
-+       if (ctx->flags & DCP_NEW_KEY) {
-+               memcpy(dev->payload_base, ctx->key, ctx->keylen);
-+               ctx->flags &= ~DCP_NEW_KEY;
-+       }
-+
-+       ctx->pkt1 = 0;
-+       ctx->pkt1 |= DCP_PKT_CIPHER_ENABLE;
-+       ctx->pkt1 |= DCP_PKT_DECR_SEM;
-+
-+       if (ctx->flags & DCP_OTP_KEY)
-+               ctx->pkt1 |= DCP_PKT_OTP_KEY;
-+       else
-+               ctx->pkt1 |= DCP_PKT_PAYLOAD_KEY;
-+
-+       if (ctx->flags & DCP_ENC)
-+               ctx->pkt1 |= DCP_PKG_CIPHER_ENCRYPT;
-+
-+       ctx->pkt2 = 0;
-+       if (ctx->flags & DCP_CBC)
-+               ctx->pkt2 |= DCP_PKT_MODE_CBC;
-+
-+       dev->pkt_produced = 0;
-+       dev->pkt_consumed = 0;
-+
-+       ctx->stat = 0;
-+       dcp_clear(dev, -1, dcp_chan_reg(DCP_REG_CHAN_STAT, USED_CHANNEL));
-+       dcp_write(dev, (u32) dev->hw_phys_pkg,
-+               dcp_chan_reg(DCP_REG_CHAN_PTR, USED_CHANNEL));
-+
-+       set_bit(DCP_FLAG_PRODUCING, &dev->flags);
-+
-+       if (use_walk) {
-+               ablkcipher_walk_init(&ctx->walk, ctx->req->dst,
-+                               ctx->req->src, ctx->req->nbytes);
-+               ablkcipher_walk_phys(ctx->req, &ctx->walk);
-+               dcp_op_proceed(dev);
-+       } else {
-+               dcp_op_one(dev, dev->hw_pkg[0], 1);
-+               clear_bit(DCP_FLAG_PRODUCING, &dev->flags);
-+       }
-+}
-+
-+static void dcp_done_task(unsigned long data)
-+{
-+       struct dcp_dev *dev = (struct dcp_dev *)data;
-+       struct dcp_hw_packet *last_packet;
-+       int fin;
-+       fin = 0;
-+
-+       for (last_packet = dev->hw_pkg[(dev->pkt_consumed) % DCP_MAX_PKG];
-+               last_packet->stat == 1;
-+               last_packet =
-+                       dev->hw_pkg[++(dev->pkt_consumed) % DCP_MAX_PKG]) {
-+
-+               dcp_dma_unmap(dev, last_packet);
-+               last_packet->stat = 0;
-+               fin++;
-+       }
-+       /* the last call of this function already consumed this IRQ's packet */
-+       if (fin == 0)
-+               return;
-+
-+       dev_dbg(dev->dev,
-+               "Packet(s) done with status %x; finished: %d, produced:%d, complete consumed: %d",
-+               dev->ctx->stat, fin, dev->pkt_produced, dev->pkt_consumed);
-+
-+       last_packet = dev->hw_pkg[(dev->pkt_consumed - 1) % DCP_MAX_PKG];
-+       if (!dev->ctx->stat && last_packet->pkt1 & DCP_PKT_CHAIN) {
-+               if (!test_and_set_bit(DCP_FLAG_PRODUCING, &dev->flags))
-+                       dcp_op_proceed(dev);
-+               return;
-+       }
-+
-+       while (unlikely(dev->pkt_consumed < dev->pkt_produced)) {
-+               dcp_dma_unmap(dev,
-+                       dev->hw_pkg[dev->pkt_consumed++ % DCP_MAX_PKG]);
-+       }
-+
-+       if (dev->ctx->flags & DCP_OTP_KEY) {
-+               /* we used the miscdevice, no walk to finish */
-+               clear_bit(DCP_FLAG_BUSY, &dev->flags);
-+               return;
-+       }
-+
-+       ablkcipher_walk_complete(&dev->ctx->walk);
-+       dev->ctx->req->base.complete(&dev->ctx->req->base,
-+                       dev->ctx->stat);
-+       dev->ctx->req = 0;
-+       /* in case there are other requests in the queue */
-+       tasklet_schedule(&dev->queue_task);
-+}
-+
-+void dcp_watchdog(unsigned long data)
-+{
-+       struct dcp_dev *dev = (struct dcp_dev *)data;
-+       dev->ctx->stat |= dcp_read(dev,
-+                       dcp_chan_reg(DCP_REG_CHAN_STAT, USED_CHANNEL));
-+
-+       dev_err(dev->dev, "Timeout, Channel status: %x", dev->ctx->stat);
-+
-+       if (!dev->ctx->stat)
-+               dev->ctx->stat = -ETIMEDOUT;
-+
-+       dcp_done_task(data);
-+}
-+
-+
-+static irqreturn_t dcp_common_irq(int irq, void *context)
-+{
-+       u32 msk;
-+       struct dcp_dev *dev = (struct dcp_dev *) context;
-+
-+       del_timer(&dev->watchdog);
-+
-+       msk = DCP_STAT_IRQ(dcp_read(dev, DCP_REG_STAT));
-+       dcp_clear(dev, msk, DCP_REG_STAT);
-+       if (msk == 0)
-+               return IRQ_NONE;
-+
-+       dev->ctx->stat |= dcp_read(dev,
-+                       dcp_chan_reg(DCP_REG_CHAN_STAT, USED_CHANNEL));
-+
-+       if (msk & DCP_STAT_CHAN_1)
-+               tasklet_schedule(&dev->done_task);
-+
-+       return IRQ_HANDLED;
-+}
-+
-+static irqreturn_t dcp_vmi_irq(int irq, void *context)
-+{
-+       return dcp_common_irq(irq, context);
-+}
-+
-+static irqreturn_t dcp_irq(int irq, void *context)
-+{
-+       return dcp_common_irq(irq, context);
-+}
-+
-+static void dcp_crypt(struct dcp_dev *dev, struct dcp_op *ctx)
-+{
-+       dev->ctx = ctx;
-+
-+       if ((ctx->flags & DCP_CBC) && ctx->req->info) {
-+               ctx->flags |= DCP_CBC_INIT;
-+               memcpy(dev->payload_base + AES_KEYSIZE_128,
-+                       ctx->req->info, AES_KEYSIZE_128);
-+       }
-+
-+       dcp_op_start(dev, 1);
-+}
-+
-+static void dcp_queue_task(unsigned long data)
-+{
-+       struct dcp_dev *dev = (struct dcp_dev *) data;
-+       struct crypto_async_request *async_req, *backlog;
-+       struct crypto_ablkcipher *tfm;
-+       struct dcp_op *ctx;
-+       struct dcp_dev_req_ctx *rctx;
-+       struct ablkcipher_request *req;
-+       unsigned long flags;
-+
-+       spin_lock_irqsave(&dev->queue_lock, flags);
-+
-+       backlog = crypto_get_backlog(&dev->queue);
-+       async_req = crypto_dequeue_request(&dev->queue);
-+
-+       spin_unlock_irqrestore(&dev->queue_lock, flags);
-+
-+       if (!async_req)
-+               goto ret_nothing_done;
-+
-+       if (backlog)
-+               backlog->complete(backlog, -EINPROGRESS);
-+
-+       req = ablkcipher_request_cast(async_req);
-+       tfm = crypto_ablkcipher_reqtfm(req);
-+       rctx = ablkcipher_request_ctx(req);
-+       ctx = crypto_ablkcipher_ctx(tfm);
-+
-+       if (!req->src || !req->dst)
-+               goto ret_nothing_done;
-+
-+       ctx->flags |= rctx->mode;
-+       ctx->req = req;
-+
-+       dcp_crypt(dev, ctx);
-+
-+       return;
-+
-+ret_nothing_done:
-+       clear_bit(DCP_FLAG_BUSY, &dev->flags);
-+}
-+
-+
-+static int dcp_cra_init(struct crypto_tfm *tfm)
-+{
-+       const char *name = tfm->__crt_alg->cra_name;
-+       struct dcp_op *ctx = crypto_tfm_ctx(tfm);
-+
-+       tfm->crt_ablkcipher.reqsize = sizeof(struct dcp_dev_req_ctx);
-+
-+       ctx->fallback = crypto_alloc_ablkcipher(name, 0,
-+                               CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
-+
-+       if (IS_ERR(ctx->fallback)) {
-+               dev_err(global_dev->dev, "Error allocating fallback algo %s\n",
-+                       name);
-+               return PTR_ERR(ctx->fallback);
-+       }
-+
-+       return 0;
-+}
-+
-+static void dcp_cra_exit(struct crypto_tfm *tfm)
-+{
-+       struct dcp_op *ctx = crypto_tfm_ctx(tfm);
-+
-+       if (ctx->fallback)
-+               crypto_free_ablkcipher(ctx->fallback);
-+
-+       ctx->fallback = NULL;
-+}
-+
-+/* async interface */
-+static int dcp_aes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
-+               unsigned int len)
-+{
-+       struct dcp_op *ctx = crypto_ablkcipher_ctx(tfm);
-+       unsigned int ret = 0;
-+       ctx->keylen = len;
-+       ctx->flags = 0;
-+       if (len == AES_KEYSIZE_128) {
-+               if (memcmp(ctx->key, key, AES_KEYSIZE_128)) {
-+                       memcpy(ctx->key, key, len);
-+                       ctx->flags |= DCP_NEW_KEY;
-+               }
-+               return 0;
-+       }
-+
-+       ctx->fallback->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;
-+       ctx->fallback->base.crt_flags |=
-+               (tfm->base.crt_flags & CRYPTO_TFM_REQ_MASK);
-+
-+       ret = crypto_ablkcipher_setkey(ctx->fallback, key, len);
-+       if (ret) {
-+               struct crypto_tfm *tfm_aux = crypto_ablkcipher_tfm(tfm);
-+
-+               tfm_aux->crt_flags &= ~CRYPTO_TFM_RES_MASK;
-+               tfm_aux->crt_flags |=
-+                       (ctx->fallback->base.crt_flags & CRYPTO_TFM_RES_MASK);
-+       }
-+       return ret;
-+}
-+
-+static int dcp_aes_cbc_crypt(struct ablkcipher_request *req, int mode)
-+{
-+       struct dcp_dev_req_ctx *rctx = ablkcipher_request_ctx(req);
-+       struct dcp_dev *dev = global_dev;
-+       unsigned long flags;
-+       int err = 0;
-+
-+       if (!IS_ALIGNED(req->nbytes, AES_BLOCK_SIZE))
-+               return -EINVAL;
-+
-+       rctx->mode = mode;
-+
-+       spin_lock_irqsave(&dev->queue_lock, flags);
-+       err = ablkcipher_enqueue_request(&dev->queue, req);
-+       spin_unlock_irqrestore(&dev->queue_lock, flags);
-+
-+       flags = test_and_set_bit(DCP_FLAG_BUSY, &dev->flags);
-+
-+       if (!(flags & DCP_FLAG_BUSY))
-+               tasklet_schedule(&dev->queue_task);
-+
-+       return err;
-+}
-+
-+static int dcp_aes_cbc_encrypt(struct ablkcipher_request *req)
-+{
-+       struct crypto_tfm *tfm =
-+               crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req));
-+       struct dcp_op *ctx = crypto_ablkcipher_ctx(
-+               crypto_ablkcipher_reqtfm(req));
-+
-+       if (unlikely(ctx->keylen != AES_KEYSIZE_128)) {
-+               int err = 0;
-+               ablkcipher_request_set_tfm(req, ctx->fallback);
-+               err = crypto_ablkcipher_encrypt(req);
-+               ablkcipher_request_set_tfm(req, __crypto_ablkcipher_cast(tfm));
-+               return err;
-+       }
-+
-+       return dcp_aes_cbc_crypt(req, DCP_AES | DCP_ENC | DCP_CBC);
-+}
-+
-+static int dcp_aes_cbc_decrypt(struct ablkcipher_request *req)
-+{
-+       struct crypto_tfm *tfm =
-+               crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req));
-+       struct dcp_op *ctx = crypto_ablkcipher_ctx(
-+               crypto_ablkcipher_reqtfm(req));
-+
-+       if (unlikely(ctx->keylen != AES_KEYSIZE_128)) {
-+               int err = 0;
-+               ablkcipher_request_set_tfm(req, ctx->fallback);
-+               err = crypto_ablkcipher_decrypt(req);
-+               ablkcipher_request_set_tfm(req, __crypto_ablkcipher_cast(tfm));
-+               return err;
-+       }
-+       return dcp_aes_cbc_crypt(req, DCP_AES | DCP_DEC | DCP_CBC);
-+}
-+
-+static struct crypto_alg algs[] = {
-+       {
-+               .cra_name = "cbc(aes)",
-+               .cra_driver_name = "dcp-cbc-aes",
-+               .cra_alignmask = 3,
-+               .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
-+                         CRYPTO_ALG_NEED_FALLBACK,
-+               .cra_blocksize = AES_KEYSIZE_128,
-+               .cra_type = &crypto_ablkcipher_type,
-+               .cra_priority = 300,
-+               .cra_u.ablkcipher = {
-+                       .min_keysize =  AES_KEYSIZE_128,
-+                       .max_keysize = AES_KEYSIZE_128,
-+                       .setkey = dcp_aes_setkey,
-+                       .encrypt = dcp_aes_cbc_encrypt,
-+                       .decrypt = dcp_aes_cbc_decrypt,
-+                       .ivsize = AES_KEYSIZE_128,
-+               }
-+
-+       },
-+};
-+
-+/* DCP bootstream verification interface: uses OTP key for crypto */
-+static int dcp_bootstream_open(struct inode *inode, struct file *file)
-+{
-+       file->private_data = container_of((file->private_data),
-+                       struct dcp_dev, dcp_bootstream_misc);
-+       return 0;
-+}
-+
-+static long dcp_bootstream_ioctl(struct file *file,
-+                                        unsigned int cmd, unsigned long arg)
-+{
-+       struct dcp_dev *dev = (struct dcp_dev *) file->private_data;
-+       void __user *argp = (void __user *)arg;
-+       int ret;
-+
-+       if (dev == NULL)
-+               return -EBADF;
-+
-+       if (cmd != DBS_ENC && cmd != DBS_DEC)
-+               return -EINVAL;
-+
-+       if (copy_from_user(dev->payload_base, argp, 16))
-+               return -EFAULT;
-+
-+       if (test_and_set_bit(DCP_FLAG_BUSY, &dev->flags))
-+               return -EAGAIN;
-+
-+       dev->ctx = kzalloc(sizeof(struct dcp_op), GFP_KERNEL);
-+       if (!dev->ctx) {
-+               dev_err(dev->dev,
-+                       "cannot allocate context for OTP crypto");
-+               clear_bit(DCP_FLAG_BUSY, &dev->flags);
-+               return -ENOMEM;
-+       }
-+
-+       dev->ctx->flags = DCP_AES | DCP_ECB | DCP_OTP_KEY | DCP_CBC_INIT;
-+       dev->ctx->flags |= (cmd == DBS_ENC) ? DCP_ENC : DCP_DEC;
-+       dev->hw_pkg[0]->src = dev->payload_base_dma;
-+       dev->hw_pkg[0]->dst = dev->payload_base_dma;
-+       dev->hw_pkg[0]->size = 16;
-+
-+       dcp_op_start(dev, 0);
-+
-+       while (test_bit(DCP_FLAG_BUSY, &dev->flags))
-+               cpu_relax();
-+
-+       ret = dev->ctx->stat;
-+       if (!ret && copy_to_user(argp, dev->payload_base, 16))
-+               ret =  -EFAULT;
-+
-+       kfree(dev->ctx);
-+
-+       return ret;
-+}
-+
-+static const struct file_operations dcp_bootstream_fops = {
-+       .owner =                THIS_MODULE,
-+       .unlocked_ioctl =       dcp_bootstream_ioctl,
-+       .open =                 dcp_bootstream_open,
-+};
-+
-+static int dcp_probe(struct platform_device *pdev)
-+{
-+       struct dcp_dev *dev = NULL;
-+       struct resource *r;
-+       int i, ret, j;
-+
-+       dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-+       if (dev == NULL) {
-+               dev_err(&pdev->dev, "Failed to allocate structure\n");
-+               ret = -ENOMEM;
-+               goto err;
-+       }
-+       global_dev = dev;
-+       dev->dev = &pdev->dev;
-+
-+       platform_set_drvdata(pdev, dev);
-+
-+       r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+       if (!r) {
-+               dev_err(&pdev->dev, "failed to get IORESOURCE_MEM\n");
-+               ret = -ENXIO;
-+               goto err_dev;
-+       }
-+       dev->dcp_regs_base = ioremap(r->start, resource_size(r));
-+
-+
-+       dcp_set(dev, DCP_CTRL_SFRST, DCP_REG_CTRL);
-+       udelay(10);
-+       dcp_clear(dev, DCP_CTRL_SFRST | DCP_CTRL_CLKGATE, DCP_REG_CTRL);
-+
-+       dcp_write(dev, DCP_CTRL_GATHER_RES_WRITE |
-+               DCP_CTRL_ENABLE_CONTEXT_CACHE | DCP_CTRL_CH_IRQ_E_1,
-+               DCP_REG_CTRL);
-+
-+       dcp_write(dev, DCP_CHAN_CTRL_ENABLE_1, DCP_REG_CHAN_CTRL);
-+
-+       for (i = 0; i < 4; i++)
-+               dcp_clear(dev, -1, dcp_chan_reg(DCP_REG_CHAN_STAT, i));
-+
-+       dcp_clear(dev, -1, DCP_REG_STAT);
-+
-+
-+       r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-+       if (!r) {
-+               dev_err(&pdev->dev, "can't get IRQ resource (0)\n");
-+               ret = -EIO;
-+               goto err_unmap_mem;
-+       }
-+       dev->dcp_vmi_irq = r->start;
-+       ret = request_irq(dev->dcp_vmi_irq, dcp_vmi_irq, 0, "dcp", dev);
-+       if (ret != 0) {
-+               dev_err(&pdev->dev, "can't request_irq (0)\n");
-+               ret = -EIO;
-+               goto err_unmap_mem;
-+       }
-+
-+       r = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
-+       if (!r) {
-+               dev_err(&pdev->dev, "can't get IRQ resource (1)\n");
-+               ret = -EIO;
-+               goto err_free_irq0;
-+       }
-+       dev->dcp_irq = r->start;
-+       ret = request_irq(dev->dcp_irq, dcp_irq, 0, "dcp", dev);
-+       if (ret != 0) {
-+               dev_err(&pdev->dev, "can't request_irq (1)\n");
-+               ret = -EIO;
-+               goto err_free_irq0;
-+       }
-+
-+       dev->hw_pkg[0] = dma_alloc_coherent(&pdev->dev,
-+                       DCP_MAX_PKG * sizeof(struct dcp_hw_packet),
-+                       &dev->hw_phys_pkg,
-+                       GFP_KERNEL);
-+       if (!dev->hw_pkg[0]) {
-+               dev_err(&pdev->dev, "Could not allocate hw descriptors\n");
-+               ret = -ENOMEM;
-+               goto err_free_irq1;
-+       }
-+
-+       for (i = 1; i < DCP_MAX_PKG; i++) {
-+               dev->hw_pkg[i - 1]->next = dev->hw_phys_pkg
-+                               + i * sizeof(struct dcp_hw_packet);
-+               dev->hw_pkg[i] = dev->hw_pkg[i - 1] + 1;
-+       }
-+       dev->hw_pkg[i - 1]->next = dev->hw_phys_pkg;
-+
-+
-+       dev->payload_base = dma_alloc_coherent(&pdev->dev, 2 * AES_KEYSIZE_128,
-+                       &dev->payload_base_dma, GFP_KERNEL);
-+       if (!dev->payload_base) {
-+               dev_err(&pdev->dev, "Could not allocate memory for key\n");
-+               ret = -ENOMEM;
-+               goto err_free_hw_packet;
-+       }
-+       tasklet_init(&dev->queue_task, dcp_queue_task,
-+               (unsigned long) dev);
-+       tasklet_init(&dev->done_task, dcp_done_task,
-+               (unsigned long) dev);
-+       spin_lock_init(&dev->queue_lock);
-+
-+       crypto_init_queue(&dev->queue, 10);
-+
-+       init_timer(&dev->watchdog);
-+       dev->watchdog.function = &dcp_watchdog;
-+       dev->watchdog.data = (unsigned long)dev;
-+
-+       dev->dcp_bootstream_misc.minor = MISC_DYNAMIC_MINOR,
-+       dev->dcp_bootstream_misc.name = "dcpboot",
-+       dev->dcp_bootstream_misc.fops = &dcp_bootstream_fops,
-+       ret = misc_register(&dev->dcp_bootstream_misc);
-+       if (ret != 0) {
-+               dev_err(dev->dev, "Unable to register misc device\n");
-+               goto err_free_key_iv;
-+       }
-+
-+       for (i = 0; i < ARRAY_SIZE(algs); i++) {
-+               algs[i].cra_priority = 300;
-+               algs[i].cra_ctxsize = sizeof(struct dcp_op);
-+               algs[i].cra_module = THIS_MODULE;
-+               algs[i].cra_init = dcp_cra_init;
-+               algs[i].cra_exit = dcp_cra_exit;
-+               if (crypto_register_alg(&algs[i])) {
-+                       dev_err(&pdev->dev, "register algorithm failed\n");
-+                       ret = -ENOMEM;
-+                       goto err_unregister;
-+               }
-+       }
-+       dev_notice(&pdev->dev, "DCP crypto enabled.!\n");
-+
-+       return 0;
-+
-+err_unregister:
-+       for (j = 0; j < i; j++)
-+               crypto_unregister_alg(&algs[j]);
-+err_free_key_iv:
-+       dma_free_coherent(&pdev->dev, 2 * AES_KEYSIZE_128, dev->payload_base,
-+                       dev->payload_base_dma);
-+err_free_hw_packet:
-+       dma_free_coherent(&pdev->dev, DCP_MAX_PKG *
-+               sizeof(struct dcp_hw_packet), dev->hw_pkg[0],
-+               dev->hw_phys_pkg);
-+err_free_irq1:
-+       free_irq(dev->dcp_irq, dev);
-+err_free_irq0:
-+       free_irq(dev->dcp_vmi_irq, dev);
-+err_unmap_mem:
-+       iounmap((void *) dev->dcp_regs_base);
-+err_dev:
-+       kfree(dev);
-+err:
-+       return ret;
-+}
-+
-+static int dcp_remove(struct platform_device *pdev)
-+{
-+       struct dcp_dev *dev;
-+       int j;
-+       dev = platform_get_drvdata(pdev);
-+       platform_set_drvdata(pdev, NULL);
-+
-+       dma_free_coherent(&pdev->dev,
-+                       DCP_MAX_PKG * sizeof(struct dcp_hw_packet),
-+                       dev->hw_pkg[0], dev->hw_phys_pkg);
-+
-+       dma_free_coherent(&pdev->dev, 2 * AES_KEYSIZE_128, dev->payload_base,
-+                       dev->payload_base_dma);
-+
-+       free_irq(dev->dcp_irq, dev);
-+       free_irq(dev->dcp_vmi_irq, dev);
-+
-+       tasklet_kill(&dev->done_task);
-+       tasklet_kill(&dev->queue_task);
-+
-+       iounmap((void *) dev->dcp_regs_base);
-+
-+       for (j = 0; j < ARRAY_SIZE(algs); j++)
-+               crypto_unregister_alg(&algs[j]);
-+
-+       misc_deregister(&dev->dcp_bootstream_misc);
-+
-+       kfree(dev);
-+       return 0;
-+}
-+
-+static struct of_device_id fs_dcp_of_match[] = {
-+       {       .compatible = "fsl-dcp"},
-+       {},
-+};
-+
-+static struct platform_driver fs_dcp_driver = {
-+       .probe = dcp_probe,
-+       .remove = dcp_remove,
-+       .driver = {
-+               .name = "fsl-dcp",
-+               .owner = THIS_MODULE,
-+               .of_match_table = fs_dcp_of_match
-+       }
-+};
-+
-+module_platform_driver(fs_dcp_driver);
-+
-+
-+MODULE_AUTHOR("Tobias Rauter <tobias.rau...@gmail.com>");
-+MODULE_DESCRIPTION("Freescale DCP Crypto Driver");
-+MODULE_LICENSE("GPL");