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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 10:25:58 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 10:25:58 -0800
commit27d189c02ba25851973c8582e419c0bded9f7e5b (patch)
treebe142d664bc4e3cec7ab2878a243343f46e897ee /drivers/crypto
parenta1703154200c390ab03c10224c586e815d3e31e8 (diff)
parent55db8387a5e8d07407f0b7c6b2526417a2bc6243 (diff)
downloadop-kernel-dev-27d189c02ba25851973c8582e419c0bded9f7e5b.zip
op-kernel-dev-27d189c02ba25851973c8582e419c0bded9f7e5b.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (46 commits) hwrng: via_rng - Fix memory scribbling on some CPUs crypto: padlock - Move padlock.h into include/crypto hwrng: via_rng - Fix asm constraints crypto: n2 - use __devexit not __exit in n2_unregister_algs crypto: mark crypto workqueues CPU_INTENSIVE crypto: mv_cesa - dont return PTR_ERR() of wrong pointer crypto: ripemd - Set module author and update email address crypto: omap-sham - backlog handling fix crypto: gf128mul - Remove experimental tag crypto: af_alg - fix af_alg memory_allocated data type crypto: aesni-intel - Fixed build with binutils 2.16 crypto: af_alg - Make sure sk_security is initialized on accept()ed sockets net: Add missing lockdep class names for af_alg include: Install linux/if_alg.h for user-space crypto API crypto: omap-aes - checkpatch --file warning fixes crypto: omap-aes - initialize aes module once per request crypto: omap-aes - unnecessary code removed crypto: omap-aes - error handling implementation improved crypto: omap-aes - redundant locking is removed crypto: omap-aes - DMA initialization fixes for OMAP off mode ...
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/mv_cesa.c2
-rw-r--r--drivers/crypto/n2_core.c2
-rw-r--r--drivers/crypto/omap-aes.c260
-rw-r--r--drivers/crypto/omap-sham.c374
-rw-r--r--drivers/crypto/padlock-aes.c2
-rw-r--r--drivers/crypto/padlock-sha.c8
-rw-r--r--drivers/crypto/padlock.h23
7 files changed, 355 insertions, 316 deletions
diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c
index 7d279e5..c99305a 100644
--- a/drivers/crypto/mv_cesa.c
+++ b/drivers/crypto/mv_cesa.c
@@ -857,7 +857,7 @@ static int mv_cra_hash_init(struct crypto_tfm *tfm, const char *base_hash_name,
printk(KERN_WARNING MV_CESA
"Base driver '%s' could not be loaded!\n",
base_hash_name);
- err = PTR_ERR(fallback_tfm);
+ err = PTR_ERR(base_hash);
goto err_bad_base;
}
}
diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c
index 76141262..80dc094 100644
--- a/drivers/crypto/n2_core.c
+++ b/drivers/crypto/n2_core.c
@@ -1542,7 +1542,7 @@ out:
return err;
}
-static void __exit n2_unregister_algs(void)
+static void __devexit n2_unregister_algs(void)
{
mutex_lock(&spu_lock);
if (!--algs_registered)
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index 799ca51..add2a1a 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -74,11 +74,9 @@
#define FLAGS_CBC BIT(1)
#define FLAGS_GIV BIT(2)
-#define FLAGS_NEW_KEY BIT(4)
-#define FLAGS_NEW_IV BIT(5)
-#define FLAGS_INIT BIT(6)
-#define FLAGS_FAST BIT(7)
-#define FLAGS_BUSY 8
+#define FLAGS_INIT BIT(4)
+#define FLAGS_FAST BIT(5)
+#define FLAGS_BUSY BIT(6)
struct omap_aes_ctx {
struct omap_aes_dev *dd;
@@ -98,19 +96,18 @@ struct omap_aes_reqctx {
struct omap_aes_dev {
struct list_head list;
unsigned long phys_base;
- void __iomem *io_base;
+ void __iomem *io_base;
struct clk *iclk;
struct omap_aes_ctx *ctx;
struct device *dev;
unsigned long flags;
+ int err;
- u32 *iv;
- u32 ctrl;
+ spinlock_t lock;
+ struct crypto_queue queue;
- spinlock_t lock;
- struct crypto_queue queue;
-
- struct tasklet_struct task;
+ struct tasklet_struct done_task;
+ struct tasklet_struct queue_task;
struct ablkcipher_request *req;
size_t total;
@@ -179,9 +176,13 @@ static int omap_aes_wait(struct omap_aes_dev *dd, u32 offset, u32 bit)
static int omap_aes_hw_init(struct omap_aes_dev *dd)
{
- int err = 0;
-
+ /*
+ * clocks are enabled when request starts and disabled when finished.
+ * It may be long delays between requests.
+ * Device might go to off mode to save power.
+ */
clk_enable(dd->iclk);
+
if (!(dd->flags & FLAGS_INIT)) {
/* is it necessary to reset before every operation? */
omap_aes_write_mask(dd, AES_REG_MASK, AES_REG_MASK_SOFTRESET,
@@ -193,39 +194,26 @@ static int omap_aes_hw_init(struct omap_aes_dev *dd)
__asm__ __volatile__("nop");
__asm__ __volatile__("nop");
- err = omap_aes_wait(dd, AES_REG_SYSSTATUS,
- AES_REG_SYSSTATUS_RESETDONE);
- if (!err)
- dd->flags |= FLAGS_INIT;
- }
+ if (omap_aes_wait(dd, AES_REG_SYSSTATUS,
+ AES_REG_SYSSTATUS_RESETDONE))
+ return -ETIMEDOUT;
- return err;
-}
+ dd->flags |= FLAGS_INIT;
+ dd->err = 0;
+ }
-static void omap_aes_hw_cleanup(struct omap_aes_dev *dd)
-{
- clk_disable(dd->iclk);
+ return 0;
}
-static void omap_aes_write_ctrl(struct omap_aes_dev *dd)
+static int omap_aes_write_ctrl(struct omap_aes_dev *dd)
{
unsigned int key32;
- int i;
+ int i, err;
u32 val, mask;
- val = FLD_VAL(((dd->ctx->keylen >> 3) - 1), 4, 3);
- if (dd->flags & FLAGS_CBC)
- val |= AES_REG_CTRL_CBC;
- if (dd->flags & FLAGS_ENCRYPT)
- val |= AES_REG_CTRL_DIRECTION;
-
- if (dd->ctrl == val && !(dd->flags & FLAGS_NEW_IV) &&
- !(dd->ctx->flags & FLAGS_NEW_KEY))
- goto out;
-
- /* only need to write control registers for new settings */
-
- dd->ctrl = val;
+ err = omap_aes_hw_init(dd);
+ if (err)
+ return err;
val = 0;
if (dd->dma_lch_out >= 0)
@@ -237,30 +225,43 @@ static void omap_aes_write_ctrl(struct omap_aes_dev *dd)
omap_aes_write_mask(dd, AES_REG_MASK, val, mask);
- pr_debug("Set key\n");
key32 = dd->ctx->keylen / sizeof(u32);
- /* set a key */
+
+ /* it seems a key should always be set even if it has not changed */
for (i = 0; i < key32; i++) {
omap_aes_write(dd, AES_REG_KEY(i),
__le32_to_cpu(dd->ctx->key[i]));
}
- dd->ctx->flags &= ~FLAGS_NEW_KEY;
- if (dd->flags & FLAGS_NEW_IV) {
- pr_debug("Set IV\n");
- omap_aes_write_n(dd, AES_REG_IV(0), dd->iv, 4);
- dd->flags &= ~FLAGS_NEW_IV;
- }
+ if ((dd->flags & FLAGS_CBC) && dd->req->info)
+ omap_aes_write_n(dd, AES_REG_IV(0), dd->req->info, 4);
+
+ val = FLD_VAL(((dd->ctx->keylen >> 3) - 1), 4, 3);
+ if (dd->flags & FLAGS_CBC)
+ val |= AES_REG_CTRL_CBC;
+ if (dd->flags & FLAGS_ENCRYPT)
+ val |= AES_REG_CTRL_DIRECTION;
mask = AES_REG_CTRL_CBC | AES_REG_CTRL_DIRECTION |
AES_REG_CTRL_KEY_SIZE;
- omap_aes_write_mask(dd, AES_REG_CTRL, dd->ctrl, mask);
+ omap_aes_write_mask(dd, AES_REG_CTRL, val, mask);
-out:
- /* start DMA or disable idle mode */
- omap_aes_write_mask(dd, AES_REG_MASK, AES_REG_MASK_START,
- AES_REG_MASK_START);
+ /* 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);
+
+ return 0;
}
static struct omap_aes_dev *omap_aes_find_dev(struct omap_aes_ctx *ctx)
@@ -288,8 +289,16 @@ static void omap_aes_dma_callback(int lch, u16 ch_status, void *data)
{
struct omap_aes_dev *dd = data;
- if (lch == dd->dma_lch_out)
- tasklet_schedule(&dd->task);
+ 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);
}
static int omap_aes_dma_init(struct omap_aes_dev *dd)
@@ -339,18 +348,6 @@ static int omap_aes_dma_init(struct omap_aes_dev *dd)
goto err_dma_out;
}
- 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);
-
- 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);
-
return 0;
err_dma_out:
@@ -406,6 +403,11 @@ static int sg_copy(struct scatterlist **sg, size_t *offset, void *buf,
if (!count)
return off;
+ /*
+ * buflen and total are AES_BLOCK_SIZE size aligned,
+ * so count should be also aligned
+ */
+
sg_copy_buf(buf + off, *sg, *offset, count, out);
off += count;
@@ -461,7 +463,9 @@ static int omap_aes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
omap_start_dma(dd->dma_lch_in);
omap_start_dma(dd->dma_lch_out);
- omap_aes_write_ctrl(dd);
+ /* start DMA or disable idle mode */
+ omap_aes_write_mask(dd, AES_REG_MASK, AES_REG_MASK_START,
+ AES_REG_MASK_START);
return 0;
}
@@ -488,8 +492,10 @@ static int omap_aes_crypt_dma_start(struct omap_aes_dev *dd)
count = min(dd->total, sg_dma_len(dd->in_sg));
count = min(count, sg_dma_len(dd->out_sg));
- if (count != dd->total)
+ if (count != dd->total) {
+ pr_err("request length != buffer length\n");
return -EINVAL;
+ }
pr_debug("fast\n");
@@ -525,23 +531,25 @@ static int omap_aes_crypt_dma_start(struct omap_aes_dev *dd)
dd->total -= count;
- err = omap_aes_hw_init(dd);
-
err = omap_aes_crypt_dma(tfm, addr_in, addr_out, count);
+ 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);
+ }
return err;
}
static void omap_aes_finish_req(struct omap_aes_dev *dd, int err)
{
- struct omap_aes_ctx *ctx;
+ struct ablkcipher_request *req = dd->req;
pr_debug("err: %d\n", err);
- ctx = crypto_ablkcipher_ctx(crypto_ablkcipher_reqtfm(dd->req));
+ clk_disable(dd->iclk);
+ dd->flags &= ~FLAGS_BUSY;
- if (!dd->total)
- dd->req->base.complete(&dd->req->base, err);
+ req->base.complete(&req->base, err);
}
static int omap_aes_crypt_dma_stop(struct omap_aes_dev *dd)
@@ -553,8 +561,6 @@ 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);
- omap_aes_hw_cleanup(dd);
-
omap_stop_dma(dd->dma_lch_in);
omap_stop_dma(dd->dma_lch_out);
@@ -574,40 +580,39 @@ static int omap_aes_crypt_dma_stop(struct omap_aes_dev *dd)
}
}
- if (err || !dd->total)
- omap_aes_finish_req(dd, err);
-
return err;
}
-static int omap_aes_handle_req(struct omap_aes_dev *dd)
+static int omap_aes_handle_queue(struct omap_aes_dev *dd,
+ struct ablkcipher_request *req)
{
struct crypto_async_request *async_req, *backlog;
struct omap_aes_ctx *ctx;
struct omap_aes_reqctx *rctx;
- struct ablkcipher_request *req;
unsigned long flags;
-
- if (dd->total)
- goto start;
+ int err, ret = 0;
spin_lock_irqsave(&dd->lock, flags);
+ if (req)
+ ret = ablkcipher_enqueue_request(&dd->queue, req);
+ if (dd->flags & FLAGS_BUSY) {
+ spin_unlock_irqrestore(&dd->lock, flags);
+ return ret;
+ }
backlog = crypto_get_backlog(&dd->queue);
async_req = crypto_dequeue_request(&dd->queue);
- if (!async_req)
- clear_bit(FLAGS_BUSY, &dd->flags);
+ if (async_req)
+ dd->flags |= FLAGS_BUSY;
spin_unlock_irqrestore(&dd->lock, flags);
if (!async_req)
- return 0;
+ return ret;
if (backlog)
backlog->complete(backlog, -EINPROGRESS);
req = ablkcipher_request_cast(async_req);
- pr_debug("get new req\n");
-
/* assign new request to device */
dd->req = req;
dd->total = req->nbytes;
@@ -621,27 +626,22 @@ static int omap_aes_handle_req(struct omap_aes_dev *dd)
rctx->mode &= FLAGS_MODE_MASK;
dd->flags = (dd->flags & ~FLAGS_MODE_MASK) | rctx->mode;
- dd->iv = req->info;
- if ((dd->flags & FLAGS_CBC) && dd->iv)
- dd->flags |= FLAGS_NEW_IV;
- else
- dd->flags &= ~FLAGS_NEW_IV;
-
+ dd->ctx = ctx;
ctx->dd = dd;
- if (dd->ctx != ctx) {
- /* assign new context to device */
- dd->ctx = ctx;
- ctx->flags |= FLAGS_NEW_KEY;
- }
- if (!IS_ALIGNED(req->nbytes, AES_BLOCK_SIZE))
- pr_err("request size is not exact amount of AES blocks\n");
+ err = omap_aes_write_ctrl(dd);
+ if (!err)
+ err = omap_aes_crypt_dma_start(dd);
+ if (err) {
+ /* aes_task will not finish it, so do it here */
+ omap_aes_finish_req(dd, err);
+ tasklet_schedule(&dd->queue_task);
+ }
-start:
- return omap_aes_crypt_dma_start(dd);
+ return ret; /* return ret, which is enqueue return value */
}
-static void omap_aes_task(unsigned long data)
+static void omap_aes_done_task(unsigned long data)
{
struct omap_aes_dev *dd = (struct omap_aes_dev *)data;
int err;
@@ -650,40 +650,50 @@ static void omap_aes_task(unsigned long data)
err = omap_aes_crypt_dma_stop(dd);
- err = omap_aes_handle_req(dd);
+ err = dd->err ? : err;
+
+ if (dd->total && !err) {
+ err = omap_aes_crypt_dma_start(dd);
+ if (!err)
+ return; /* DMA started. Not fininishing. */
+ }
+
+ omap_aes_finish_req(dd, err);
+ omap_aes_handle_queue(dd, NULL);
pr_debug("exit\n");
}
+static void omap_aes_queue_task(unsigned long data)
+{
+ struct omap_aes_dev *dd = (struct omap_aes_dev *)data;
+
+ omap_aes_handle_queue(dd, NULL);
+}
+
static int omap_aes_crypt(struct ablkcipher_request *req, unsigned long mode)
{
struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(
crypto_ablkcipher_reqtfm(req));
struct omap_aes_reqctx *rctx = ablkcipher_request_ctx(req);
struct omap_aes_dev *dd;
- unsigned long flags;
- int err;
pr_debug("nbytes: %d, enc: %d, cbc: %d\n", req->nbytes,
!!(mode & FLAGS_ENCRYPT),
!!(mode & FLAGS_CBC));
+ if (!IS_ALIGNED(req->nbytes, AES_BLOCK_SIZE)) {
+ pr_err("request size is not exact amount of AES blocks\n");
+ return -EINVAL;
+ }
+
dd = omap_aes_find_dev(ctx);
if (!dd)
return -ENODEV;
rctx->mode = mode;
- spin_lock_irqsave(&dd->lock, flags);
- err = ablkcipher_enqueue_request(&dd->queue, req);
- spin_unlock_irqrestore(&dd->lock, flags);
-
- if (!test_and_set_bit(FLAGS_BUSY, &dd->flags))
- omap_aes_handle_req(dd);
-
- pr_debug("exit\n");
-
- return err;
+ return omap_aes_handle_queue(dd, req);
}
/* ********************** ALG API ************************************ */
@@ -701,7 +711,6 @@ static int omap_aes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
memcpy(ctx->key, key, keylen);
ctx->keylen = keylen;
- ctx->flags |= FLAGS_NEW_KEY;
return 0;
}
@@ -750,7 +759,7 @@ static struct crypto_alg algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = AES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct omap_aes_ctx),
- .cra_alignmask = 0,
+ .cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = omap_aes_cra_init,
@@ -770,7 +779,7 @@ static struct crypto_alg algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = AES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct omap_aes_ctx),
- .cra_alignmask = 0,
+ .cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = omap_aes_cra_init,
@@ -849,7 +858,8 @@ static int omap_aes_probe(struct platform_device *pdev)
(reg & AES_REG_REV_MAJOR) >> 4, reg & AES_REG_REV_MINOR);
clk_disable(dd->iclk);
- tasklet_init(&dd->task, omap_aes_task, (unsigned long)dd);
+ tasklet_init(&dd->done_task, omap_aes_done_task, (unsigned long)dd);
+ tasklet_init(&dd->queue_task, omap_aes_queue_task, (unsigned long)dd);
err = omap_aes_dma_init(dd);
if (err)
@@ -876,7 +886,8 @@ err_algs:
crypto_unregister_alg(&algs[j]);
omap_aes_dma_cleanup(dd);
err_dma:
- tasklet_kill(&dd->task);
+ tasklet_kill(&dd->done_task);
+ tasklet_kill(&dd->queue_task);
iounmap(dd->io_base);
err_io:
clk_put(dd->iclk);
@@ -903,7 +914,8 @@ static int omap_aes_remove(struct platform_device *pdev)
for (i = 0; i < ARRAY_SIZE(algs); i++)
crypto_unregister_alg(&algs[i]);
- tasklet_kill(&dd->task);
+ tasklet_kill(&dd->done_task);
+ tasklet_kill(&dd->queue_task);
omap_aes_dma_cleanup(dd);
iounmap(dd->io_base);
clk_put(dd->iclk);
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index a081c7c..2e71123 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -72,10 +72,9 @@
#define DEFAULT_TIMEOUT_INTERVAL HZ
-#define FLAGS_FIRST 0x0001
#define FLAGS_FINUP 0x0002
#define FLAGS_FINAL 0x0004
-#define FLAGS_FAST 0x0008
+#define FLAGS_SG 0x0008
#define FLAGS_SHA1 0x0010
#define FLAGS_DMA_ACTIVE 0x0020
#define FLAGS_OUTPUT_READY 0x0040
@@ -83,13 +82,17 @@
#define FLAGS_INIT 0x0100
#define FLAGS_CPU 0x0200
#define FLAGS_HMAC 0x0400
-
-/* 3rd byte */
-#define FLAGS_BUSY 16
+#define FLAGS_ERROR 0x0800
+#define FLAGS_BUSY 0x1000
#define OP_UPDATE 1
#define OP_FINAL 2
+#define OMAP_ALIGN_MASK (sizeof(u32)-1)
+#define OMAP_ALIGNED __attribute__((aligned(sizeof(u32))))
+
+#define BUFLEN PAGE_SIZE
+
struct omap_sham_dev;
struct omap_sham_reqctx {
@@ -97,8 +100,8 @@ struct omap_sham_reqctx {
unsigned long flags;
unsigned long op;
+ u8 digest[SHA1_DIGEST_SIZE] OMAP_ALIGNED;
size_t digcnt;
- u8 *buffer;
size_t bufcnt;
size_t buflen;
dma_addr_t dma_addr;
@@ -107,6 +110,8 @@ struct omap_sham_reqctx {
struct scatterlist *sg;
unsigned int offset; /* offset in current sg */
unsigned int total; /* total request */
+
+ u8 buffer[0] OMAP_ALIGNED;
};
struct omap_sham_hmac_ctx {
@@ -136,6 +141,7 @@ struct omap_sham_dev {
int irq;
struct clk *iclk;
spinlock_t lock;
+ int err;
int dma;
int dma_lch;
struct tasklet_struct done_task;
@@ -194,53 +200,68 @@ static inline int omap_sham_wait(struct omap_sham_dev *dd, u32 offset, u32 bit)
static void omap_sham_copy_hash(struct ahash_request *req, int out)
{
struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
+ u32 *hash = (u32 *)ctx->digest;
+ int i;
+
+ /* MD5 is almost unused. So copy sha1 size to reduce code */
+ for (i = 0; i < SHA1_DIGEST_SIZE / sizeof(u32); i++) {
+ if (out)
+ hash[i] = omap_sham_read(ctx->dd,
+ SHA_REG_DIGEST(i));
+ else
+ omap_sham_write(ctx->dd,
+ SHA_REG_DIGEST(i), hash[i]);
+ }
+}
+
+static void omap_sham_copy_ready_hash(struct ahash_request *req)
+{
+ struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
+ u32 *in = (u32 *)ctx->digest;
u32 *hash = (u32 *)req->result;
int i;
+ if (!hash)
+ return;
+
if (likely(ctx->flags & FLAGS_SHA1)) {
/* SHA1 results are in big endian */
for (i = 0; i < SHA1_DIGEST_SIZE / sizeof(u32); i++)
- if (out)
- hash[i] = be32_to_cpu(omap_sham_read(ctx->dd,
- SHA_REG_DIGEST(i)));
- else
- omap_sham_write(ctx->dd, SHA_REG_DIGEST(i),
- cpu_to_be32(hash[i]));
+ hash[i] = be32_to_cpu(in[i]);
} else {
/* MD5 results are in little endian */
for (i = 0; i < MD5_DIGEST_SIZE / sizeof(u32); i++)
- if (out)
- hash[i] = le32_to_cpu(omap_sham_read(ctx->dd,
- SHA_REG_DIGEST(i)));
- else
- omap_sham_write(ctx->dd, SHA_REG_DIGEST(i),
- cpu_to_le32(hash[i]));
+ hash[i] = le32_to_cpu(in[i]);
}
}
-static int omap_sham_write_ctrl(struct omap_sham_dev *dd, size_t length,
- int final, int dma)
+static int omap_sham_hw_init(struct omap_sham_dev *dd)
{
- struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req);
- u32 val = length << 5, mask;
+ clk_enable(dd->iclk);
- if (unlikely(!ctx->digcnt)) {
+ if (!(dd->flags & FLAGS_INIT)) {
+ omap_sham_write_mask(dd, SHA_REG_MASK,
+ SHA_REG_MASK_SOFTRESET, SHA_REG_MASK_SOFTRESET);
- clk_enable(dd->iclk);
+ if (omap_sham_wait(dd, SHA_REG_SYSSTATUS,
+ SHA_REG_SYSSTATUS_RESETDONE))
+ return -ETIMEDOUT;
- if (!(dd->flags & FLAGS_INIT)) {
- omap_sham_write_mask(dd, SHA_REG_MASK,
- SHA_REG_MASK_SOFTRESET, SHA_REG_MASK_SOFTRESET);
+ dd->flags |= FLAGS_INIT;
+ dd->err = 0;
+ }
- if (omap_sham_wait(dd, SHA_REG_SYSSTATUS,
- SHA_REG_SYSSTATUS_RESETDONE))
- return -ETIMEDOUT;
+ return 0;
+}
- dd->flags |= FLAGS_INIT;
- }
- } else {
+static void omap_sham_write_ctrl(struct omap_sham_dev *dd, size_t length,
+ int final, int dma)
+{
+ struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req);
+ u32 val = length << 5, mask;
+
+ if (likely(ctx->digcnt))
omap_sham_write(dd, SHA_REG_DIGCNT, ctx->digcnt);
- }
omap_sham_write_mask(dd, SHA_REG_MASK,
SHA_REG_MASK_IT_EN | (dma ? SHA_REG_MASK_DMA_EN : 0),
@@ -260,29 +281,26 @@ static int omap_sham_write_ctrl(struct omap_sham_dev *dd, size_t length,
SHA_REG_CTRL_ALGO | SHA_REG_CTRL_LENGTH;
omap_sham_write_mask(dd, SHA_REG_CTRL, val, mask);
-
- return 0;
}
static int omap_sham_xmit_cpu(struct omap_sham_dev *dd, const u8 *buf,
size_t length, int final)
{
struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req);
- int err, count, len32;
+ int count, len32;
const u32 *buffer = (const u32 *)buf;
dev_dbg(dd->dev, "xmit_cpu: digcnt: %d, length: %d, final: %d\n",
ctx->digcnt, length, final);
- err = omap_sham_write_ctrl(dd, length, final, 0);
- if (err)
- return err;
+ omap_sham_write_ctrl(dd, length, final, 0);
+
+ /* should be non-zero before next lines to disable clocks later */
+ ctx->digcnt += length;
if (omap_sham_wait(dd, SHA_REG_CTRL, SHA_REG_CTRL_INPUT_READY))
return -ETIMEDOUT;
- ctx->digcnt += length;
-
if (final)
ctx->flags |= FLAGS_FINAL; /* catch last interrupt */
@@ -298,16 +316,11 @@ static int omap_sham_xmit_dma(struct omap_sham_dev *dd, dma_addr_t dma_addr,
size_t length, int final)
{
struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req);
- int err, len32;
+ int len32;
dev_dbg(dd->dev, "xmit_dma: digcnt: %d, length: %d, final: %d\n",
ctx->digcnt, length, final);
- /* flush cache entries related to our page */
- if (dma_addr == ctx->dma_addr)
- dma_sync_single_for_device(dd->dev, dma_addr, length,
- DMA_TO_DEVICE);
-
len32 = DIV_ROUND_UP(length, sizeof(u32));
omap_set_dma_transfer_params(dd->dma_lch, OMAP_DMA_DATA_TYPE_S32, len32,
@@ -317,9 +330,7 @@ static int omap_sham_xmit_dma(struct omap_sham_dev *dd, dma_addr_t dma_addr,
omap_set_dma_src_params(dd->dma_lch, 0, OMAP_DMA_AMODE_POST_INC,
dma_addr, 0, 0);
- err = omap_sham_write_ctrl(dd, length, final, 1);
- if (err)
- return err;
+ omap_sham_write_ctrl(dd, length, final, 1);
ctx->digcnt += length;
@@ -371,15 +382,29 @@ static size_t omap_sham_append_sg(struct omap_sham_reqctx *ctx)
return 0;
}
+static int omap_sham_xmit_dma_map(struct omap_sham_dev *dd,
+ struct omap_sham_reqctx *ctx,
+ size_t length, int final)
+{
+ ctx->dma_addr = dma_map_single(dd->dev, ctx->buffer, ctx->buflen,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dd->dev, ctx->dma_addr)) {
+ dev_err(dd->dev, "dma %u bytes error\n", ctx->buflen);
+ return -EINVAL;
+ }
+
+ ctx->flags &= ~FLAGS_SG;
+
+ /* next call does not fail... so no unmap in the case of error */
+ return omap_sham_xmit_dma(dd, ctx->dma_addr, length, final);
+}
+
static int omap_sham_update_dma_slow(struct omap_sham_dev *dd)
{
struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req);
unsigned int final;
size_t count;
- if (!ctx->total)
- return 0;
-
omap_sham_append_sg(ctx);
final = (ctx->flags & FLAGS_FINUP) && !ctx->total;
@@ -390,30 +415,68 @@ static int omap_sham_update_dma_slow(struct omap_sham_dev *dd)
if (final || (ctx->bufcnt == ctx->buflen && ctx->total)) {
count = ctx->bufcnt;
ctx->bufcnt = 0;
- return omap_sham_xmit_dma(dd, ctx->dma_addr, count, final);
+ return omap_sham_xmit_dma_map(dd, ctx, count, final);
}
return 0;
}
-static int omap_sham_update_dma_fast(struct omap_sham_dev *dd)
+/* Start address alignment */
+#define SG_AA(sg) (IS_ALIGNED(sg->offset, sizeof(u32)))
+/* SHA1 block size alignment */
+#define SG_SA(sg) (IS_ALIGNED(sg->length, SHA1_MD5_BLOCK_SIZE))
+
+static int omap_sham_update_dma_start(struct omap_sham_dev *dd)
{
struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req);
- unsigned int length;
+ unsigned int length, final, tail;
+ struct scatterlist *sg;
- ctx->flags |= FLAGS_FAST;
+ if (!ctx->total)
+ return 0;
+
+ if (ctx->bufcnt || ctx->offset)
+ return omap_sham_update_dma_slow(dd);
+
+ dev_dbg(dd->dev, "fast: digcnt: %d, bufcnt: %u, total: %u\n",
+ ctx->digcnt, ctx->bufcnt, ctx->total);
+
+ sg = ctx->sg;
- length = min(ctx->total, sg_dma_len(ctx->sg));
- ctx->total = length;
+ if (!SG_AA(sg))
+ return omap_sham_update_dma_slow(dd);
+
+ if (!sg_is_last(sg) && !SG_SA(sg))
+ /* size is not SHA1_BLOCK_SIZE aligned */
+ return omap_sham_update_dma_slow(dd);
+
+ length = min(ctx->total, sg->length);
+
+ if (sg_is_last(sg)) {
+ if (!(ctx->flags & FLAGS_FINUP)) {
+ /* not last sg must be SHA1_MD5_BLOCK_SIZE aligned */
+ tail = length & (SHA1_MD5_BLOCK_SIZE - 1);
+ /* without finup() we need one block to close hash */
+ if (!tail)
+ tail = SHA1_MD5_BLOCK_SIZE;
+ length -= tail;
+ }
+ }
if (!dma_map_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE)) {
dev_err(dd->dev, "dma_map_sg error\n");
return -EINVAL;
}
+ ctx->flags |= FLAGS_SG;
+
ctx->total -= length;
+ ctx->offset = length; /* offset where to start slow */
- return omap_sham_xmit_dma(dd, sg_dma_address(ctx->sg), length, 1);
+ final = (ctx->flags & FLAGS_FINUP) && !ctx->total;
+
+ /* next call does not fail... so no unmap in the case of error */
+ return omap_sham_xmit_dma(dd, sg_dma_address(ctx->sg), length, final);
}
static int omap_sham_update_cpu(struct omap_sham_dev *dd)
@@ -433,8 +496,17 @@ static int omap_sham_update_dma_stop(struct omap_sham_dev *dd)
struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req);
omap_stop_dma(dd->dma_lch);
- if (ctx->flags & FLAGS_FAST)
+ if (ctx->flags & FLAGS_SG) {
dma_unmap_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE);
+ if (ctx->sg->length == ctx->offset) {
+ ctx->sg = sg_next(ctx->sg);
+ if (ctx->sg)
+ ctx->offset = 0;
+ }
+ } else {
+ dma_unmap_single(dd->dev, ctx->dma_addr, ctx->buflen,
+ DMA_TO_DEVICE);
+ }
return 0;
}
@@ -454,14 +526,7 @@ static void omap_sham_cleanup(struct ahash_request *req)
spin_unlock_irqrestore(&dd->lock, flags);
if (ctx->digcnt)
- clk_disable(dd->iclk);
-
- if (ctx->dma_addr)
- dma_unmap_single(dd->dev, ctx->dma_addr, ctx->buflen,
- DMA_TO_DEVICE);
-
- if (ctx->buffer)
- free_page((unsigned long)ctx->buffer);
+ omap_sham_copy_ready_hash(req);
dev_dbg(dd->dev, "digcnt: %d, bufcnt: %d\n", ctx->digcnt, ctx->bufcnt);
}
@@ -489,8 +554,6 @@ static int omap_sham_init(struct ahash_request *req)
ctx->flags = 0;
- ctx->flags |= FLAGS_FIRST;
-
dev_dbg(dd->dev, "init: digest size: %d\n",
crypto_ahash_digestsize(tfm));
@@ -499,21 +562,7 @@ static int omap_sham_init(struct ahash_request *req)
ctx->bufcnt = 0;
ctx->digcnt = 0;
-
- ctx->buflen = PAGE_SIZE;
- ctx->buffer = (void *)__get_free_page(
- (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
- GFP_KERNEL : GFP_ATOMIC);
- if (!ctx->buffer)
- return -ENOMEM;
-
- ctx->dma_addr = dma_map_single(dd->dev, ctx->buffer, ctx->buflen,
- DMA_TO_DEVICE);
- if (dma_mapping_error(dd->dev, ctx->dma_addr)) {
- dev_err(dd->dev, "dma %u bytes error\n", ctx->buflen);
- free_page((unsigned long)ctx->buffer);
- return -EINVAL;
- }
+ ctx->buflen = BUFLEN;
if (tctx->flags & FLAGS_HMAC) {
struct omap_sham_hmac_ctx *bctx = tctx->base;
@@ -538,10 +587,8 @@ static int omap_sham_update_req(struct omap_sham_dev *dd)
if (ctx->flags & FLAGS_CPU)
err = omap_sham_update_cpu(dd);
- else if (ctx->flags & FLAGS_FAST)
- err = omap_sham_update_dma_fast(dd);
else
- err = omap_sham_update_dma_slow(dd);
+ err = omap_sham_update_dma_start(dd);
/* wait for dma completion before can take more data */
dev_dbg(dd->dev, "update: err: %d, digcnt: %d\n", err, ctx->digcnt);
@@ -560,15 +607,12 @@ static int omap_sham_final_req(struct omap_sham_dev *dd)
use_dma = 0;
if (use_dma)
- err = omap_sham_xmit_dma(dd, ctx->dma_addr, ctx->bufcnt, 1);
+ err = omap_sham_xmit_dma_map(dd, ctx, ctx->bufcnt, 1);
else
err = omap_sham_xmit_cpu(dd, ctx->buffer, ctx->bufcnt, 1);
ctx->bufcnt = 0;
- if (err != -EINPROGRESS)
- omap_sham_cleanup(req);
-
dev_dbg(dd->dev, "final_req: err: %d\n", err);
return err;
@@ -576,6 +620,7 @@ static int omap_sham_final_req(struct omap_sham_dev *dd)
static int omap_sham_finish_req_hmac(struct ahash_request *req)
{
+ struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm);
struct omap_sham_hmac_ctx *bctx = tctx->base;
int bs = crypto_shash_blocksize(bctx->shash);
@@ -590,48 +635,56 @@ static int omap_sham_finish_req_hmac(struct ahash_request *req)
return crypto_shash_init(&desc.shash) ?:
crypto_shash_update(&desc.shash, bctx->opad, bs) ?:
- crypto_shash_finup(&desc.shash, req->result, ds, req->result);
+ crypto_shash_finup(&desc.shash, ctx->digest, ds, ctx->digest);
}
static void omap_sham_finish_req(struct ahash_request *req, int err)
{
struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
+ struct omap_sham_dev *dd = ctx->dd;
if (!err) {
omap_sham_copy_hash(ctx->dd->req, 1);
if (ctx->flags & FLAGS_HMAC)
err = omap_sham_finish_req_hmac(req);
+ } else {
+ ctx->flags |= FLAGS_ERROR;
}
- if (ctx->flags & FLAGS_FINAL)
+ if ((ctx->flags & FLAGS_FINAL) || err)
omap_sham_cleanup(req);
- clear_bit(FLAGS_BUSY, &ctx->dd->flags);
+ clk_disable(dd->iclk);
+ dd->flags &= ~FLAGS_BUSY;
if (req->base.complete)
req->base.complete(&req->base, err);
}
-static int omap_sham_handle_queue(struct omap_sham_dev *dd)
+static int omap_sham_handle_queue(struct omap_sham_dev *dd,
+ struct ahash_request *req)
{
struct crypto_async_request *async_req, *backlog;
struct omap_sham_reqctx *ctx;
- struct ahash_request *req, *prev_req;
+ struct ahash_request *prev_req;
unsigned long flags;
- int err = 0;
-
- if (test_and_set_bit(FLAGS_BUSY, &dd->flags))
- return 0;
+ int err = 0, ret = 0;
spin_lock_irqsave(&dd->lock, flags);
+ if (req)
+ ret = ahash_enqueue_request(&dd->queue, req);
+ if (dd->flags & FLAGS_BUSY) {
+ spin_unlock_irqrestore(&dd->lock, flags);
+ return ret;
+ }
backlog = crypto_get_backlog(&dd->queue);
async_req = crypto_dequeue_request(&dd->queue);
- if (!async_req)
- clear_bit(FLAGS_BUSY, &dd->flags);
+ if (async_req)
+ dd->flags |= FLAGS_BUSY;
spin_unlock_irqrestore(&dd->lock, flags);
if (!async_req)
- return 0;
+ return ret;
if (backlog)
backlog->complete(backlog, -EINPROGRESS);
@@ -646,7 +699,22 @@ static int omap_sham_handle_queue(struct omap_sham_dev *dd)
dev_dbg(dd->dev, "handling new req, op: %lu, nbytes: %d\n",
ctx->op, req->nbytes);
- if (req != prev_req && ctx->digcnt)
+
+ err = omap_sham_hw_init(dd);
+ if (err)
+ goto err1;
+
+ 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);
+
+ if (ctx->digcnt)
/* request has changed - restore hash */
omap_sham_copy_hash(req, 0);
@@ -658,7 +726,7 @@ static int omap_sham_handle_queue(struct omap_sham_dev *dd)
} else if (ctx->op == OP_FINAL) {
err = omap_sham_final_req(dd);
}
-
+err1:
if (err != -EINPROGRESS) {
/* done_task will not finish it, so do it here */
omap_sham_finish_req(req, err);
@@ -667,7 +735,7 @@ static int omap_sham_handle_queue(struct omap_sham_dev *dd)
dev_dbg(dd->dev, "exit, err: %d\n", err);
- return err;
+ return ret;
}
static int omap_sham_enqueue(struct ahash_request *req, unsigned int op)
@@ -675,18 +743,10 @@ static int omap_sham_enqueue(struct ahash_request *req, unsigned int op)
struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm);
struct omap_sham_dev *dd = tctx->dd;
- unsigned long flags;
- int err;
ctx->op = op;
- spin_lock_irqsave(&dd->lock, flags);
- err = ahash_enqueue_request(&dd->queue, req);
- spin_unlock_irqrestore(&dd->lock, flags);
-
- omap_sham_handle_queue(dd);
-
- return err;
+ return omap_sham_handle_queue(dd, req);
}
static int omap_sham_update(struct ahash_request *req)
@@ -709,21 +769,13 @@ static int omap_sham_update(struct ahash_request *req)
*/
omap_sham_append_sg(ctx);
return 0;
- } else if (ctx->bufcnt + ctx->total <= 64) {
+ } else if (ctx->bufcnt + ctx->total <= SHA1_MD5_BLOCK_SIZE) {
+ /*
+ * faster to use CPU for short transfers
+ */
ctx->flags |= FLAGS_CPU;
- } else if (!ctx->bufcnt && sg_is_last(ctx->sg)) {
- /* may be can use faster functions */
- int aligned = IS_ALIGNED((u32)ctx->sg->offset,
- sizeof(u32));
-
- if (aligned && (ctx->flags & FLAGS_FIRST))
- /* digest: first and final */
- ctx->flags |= FLAGS_FAST;
-
- ctx->flags &= ~FLAGS_FIRST;
}
- } else if (ctx->bufcnt + ctx->total <= ctx->buflen) {
- /* if not finaup -> not fast */
+ } else if (ctx->bufcnt + ctx->total < ctx->buflen) {
omap_sham_append_sg(ctx);
return 0;
}
@@ -761,12 +813,14 @@ static int omap_sham_final(struct ahash_request *req)
ctx->flags |= FLAGS_FINUP;
- /* OMAP HW accel works only with buffers >= 9 */
- /* HMAC is always >= 9 because of ipad */
- if ((ctx->digcnt + ctx->bufcnt) < 9)
- err = omap_sham_final_shash(req);
- else if (ctx->bufcnt)
- return omap_sham_enqueue(req, OP_FINAL);
+ if (!(ctx->flags & FLAGS_ERROR)) {
+ /* OMAP HW accel works only with buffers >= 9 */
+ /* HMAC is always >= 9 because of ipad */
+ if ((ctx->digcnt + ctx->bufcnt) < 9)
+ err = omap_sham_final_shash(req);
+ else if (ctx->bufcnt)
+ return omap_sham_enqueue(req, OP_FINAL);
+ }
omap_sham_cleanup(req);
@@ -836,6 +890,8 @@ static int omap_sham_cra_init_alg(struct crypto_tfm *tfm, const char *alg_base)
struct omap_sham_ctx *tctx = crypto_tfm_ctx(tfm);
const char *alg_name = crypto_tfm_alg_name(tfm);
+ pr_info("enter\n");
+
/* Allocate a fallback and abort if it failed. */
tctx->fallback = crypto_alloc_shash(alg_name, 0,
CRYPTO_ALG_NEED_FALLBACK);
@@ -846,7 +902,7 @@ static int omap_sham_cra_init_alg(struct crypto_tfm *tfm, const char *alg_base)
}
crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
- sizeof(struct omap_sham_reqctx));
+ sizeof(struct omap_sham_reqctx) + BUFLEN);
if (alg_base) {
struct omap_sham_hmac_ctx *bctx = tctx->base;
@@ -932,7 +988,7 @@ static struct ahash_alg algs[] = {
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA1_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct omap_sham_ctx),
- .cra_alignmask = 0,
+ .cra_alignmask = OMAP_ALIGN_MASK,
.cra_module = THIS_MODULE,
.cra_init = omap_sham_cra_init,
.cra_exit = omap_sham_cra_exit,
@@ -956,7 +1012,7 @@ static struct ahash_alg algs[] = {
.cra_blocksize = SHA1_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct omap_sham_ctx) +
sizeof(struct omap_sham_hmac_ctx),
- .cra_alignmask = 0,
+ .cra_alignmask = OMAP_ALIGN_MASK,
.cra_module = THIS_MODULE,
.cra_init = omap_sham_cra_sha1_init,
.cra_exit = omap_sham_cra_exit,
@@ -980,7 +1036,7 @@ static struct ahash_alg algs[] = {
.cra_blocksize = SHA1_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct omap_sham_ctx) +
sizeof(struct omap_sham_hmac_ctx),
- .cra_alignmask = 0,
+ .cra_alignmask = OMAP_ALIGN_MASK,
.cra_module = THIS_MODULE,
.cra_init = omap_sham_cra_md5_init,
.cra_exit = omap_sham_cra_exit,
@@ -993,7 +1049,7 @@ static void omap_sham_done_task(unsigned long data)
struct omap_sham_dev *dd = (struct omap_sham_dev *)data;
struct ahash_request *req = dd->req;
struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
- int ready = 1;
+ int ready = 0, err = 0;
if (ctx->flags & FLAGS_OUTPUT_READY) {
ctx->flags &= ~FLAGS_OUTPUT_READY;
@@ -1003,15 +1059,18 @@ static void omap_sham_done_task(unsigned long data)
if (dd->flags & FLAGS_DMA_ACTIVE) {
dd->flags &= ~FLAGS_DMA_ACTIVE;
omap_sham_update_dma_stop(dd);
- omap_sham_update_dma_slow(dd);
+ if (!dd->err)
+ err = omap_sham_update_dma_start(dd);
}
- if (ready && !(dd->flags & FLAGS_DMA_ACTIVE)) {
- dev_dbg(dd->dev, "update done\n");
+ err = dd->err ? : err;
+
+ if (err != -EINPROGRESS && (ready || err)) {
+ dev_dbg(dd->dev, "update done: err: %d\n", err);
/* finish curent request */
- omap_sham_finish_req(req, 0);
+ omap_sham_finish_req(req, err);
/* start new request */
- omap_sham_handle_queue(dd);
+ omap_sham_handle_queue(dd, NULL);
}
}
@@ -1019,7 +1078,7 @@ static void omap_sham_queue_task(unsigned long data)
{
struct omap_sham_dev *dd = (struct omap_sham_dev *)data;
- omap_sham_handle_queue(dd);
+ omap_sham_handle_queue(dd, NULL);
}
static irqreturn_t omap_sham_irq(int irq, void *dev_id)
@@ -1041,6 +1100,7 @@ static irqreturn_t omap_sham_irq(int irq, void *dev_id)
omap_sham_read(dd, SHA_REG_CTRL);
ctx->flags |= FLAGS_OUTPUT_READY;
+ dd->err = 0;
tasklet_schedule(&dd->done_task);
return IRQ_HANDLED;
@@ -1050,8 +1110,13 @@ static void omap_sham_dma_callback(int lch, u16 ch_status, void *data)
{
struct omap_sham_dev *dd = data;
- if (likely(lch == dd->dma_lch))
- tasklet_schedule(&dd->done_task);
+ if (ch_status != OMAP_DMA_BLOCK_IRQ) {
+ pr_err("omap-sham DMA error status: 0x%hx\n", ch_status);
+ dd->err = -EIO;
+ dd->flags &= ~FLAGS_INIT; /* request to re-initialize */
+ }
+
+ tasklet_schedule(&dd->done_task);
}
static int omap_sham_dma_init(struct omap_sham_dev *dd)
@@ -1066,15 +1131,6 @@ static int omap_sham_dma_init(struct omap_sham_dev *dd)
dev_err(dd->dev, "Unable to request DMA channel\n");
return err;
}
- 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);
return 0;
}
diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index 8a515ba..db33d30 100644
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -9,6 +9,7 @@
#include <crypto/algapi.h>
#include <crypto/aes.h>
+#include <crypto/padlock.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
@@ -21,7 +22,6 @@
#include <asm/byteorder.h>
#include <asm/processor.h>
#include <asm/i387.h>
-#include "padlock.h"
/*
* Number of data blocks actually fetched for each xcrypt insn.
diff --git a/drivers/crypto/padlock-sha.c b/drivers/crypto/padlock-sha.c
index d3a27e0..adf075b 100644
--- a/drivers/crypto/padlock-sha.c
+++ b/drivers/crypto/padlock-sha.c
@@ -13,6 +13,7 @@
*/
#include <crypto/internal/hash.h>
+#include <crypto/padlock.h>
#include <crypto/sha.h>
#include <linux/err.h>
#include <linux/module.h>
@@ -22,13 +23,6 @@
#include <linux/kernel.h>
#include <linux/scatterlist.h>
#include <asm/i387.h>
-#include "padlock.h"
-
-#ifdef CONFIG_64BIT
-#define STACK_ALIGN 16
-#else
-#define STACK_ALIGN 4
-#endif
struct padlock_sha_desc {
struct shash_desc fallback;
diff --git a/drivers/crypto/padlock.h b/drivers/crypto/padlock.h
deleted file mode 100644
index b728e45..0000000
--- a/drivers/crypto/padlock.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Driver for VIA PadLock
- *
- * Copyright (c) 2004 Michal Ludvig <michal@logix.cz>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- */
-
-#ifndef _CRYPTO_PADLOCK_H
-#define _CRYPTO_PADLOCK_H
-
-#define PADLOCK_ALIGNMENT 16
-
-#define PFX "padlock: "
-
-#define PADLOCK_CRA_PRIORITY 300
-#define PADLOCK_COMPOSITE_PRIORITY 400
-
-#endif /* _CRYPTO_PADLOCK_H */
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