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crypto: caam - ahash hmac support

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caam supports ahash hmac with sha algorithms and md5.

Signed-off-by: Yuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Yuan Kang 2012-06-22 19:48:47 -05:00 committed by Herbert Xu
parent a299c83704
commit 045e36780f
6 changed files with 1869 additions and 0 deletions
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12
drivers/crypto/caam/Kconfig
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@ -70,3 +70,15 @@ config CRYPTO_DEV_FSL_CAAM_CRYPTO_API
To compile this as a module, choose M here: the module
will be called caamalg.
config CRYPTO_DEV_FSL_CAAM_AHASH_API
tristate "Register hash algorithm implementations with Crypto API"
depends on CRYPTO_DEV_FSL_CAAM
default y
select CRYPTO_AHASH
help
Selecting this will offload ahash for users of the
scatterlist crypto API to the SEC4 via job ring.
To compile this as a module, choose M here: the module
will be called caamhash.

1
drivers/crypto/caam/Makefile
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@ -4,5 +4,6 @@
obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM) += caam.o
obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API) += caamalg.o
obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_AHASH_API) += caamhash.o
caam-objs := ctrl.o jr.o error.o key_gen.o

1814
drivers/crypto/caam/caamhash.c Normal file
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File diff suppressed because it is too large Load Diff

2
drivers/crypto/caam/compat.h
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@ -11,6 +11,7 @@
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/crypto.h>
#include <linux/hash.h>
#include <linux/hw_random.h>
#include <linux/of_platform.h>
#include <linux/dma-mapping.h>
@ -33,5 +34,6 @@
#include <crypto/authenc.h>
#include <crypto/scatterwalk.h>
#include <crypto/internal/skcipher.h>
#include <crypto/internal/hash.h>
#endif /* !defined(CAAM_COMPAT_H) */

2
drivers/crypto/caam/intern.h
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@ -88,6 +88,8 @@ struct caam_drv_private {
atomic_t tfm_count ____cacheline_aligned;
/* list of registered crypto algorithms (mk generic context handle?) */
struct list_head alg_list;
/* list of registered hash algorithms (mk generic context handle?) */
struct list_head hash_list;
/*
* debugfs entries for developer view into driver/device

38
drivers/crypto/caam/sg_sw_sec4.h
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@ -82,3 +82,41 @@ static inline int sg_count(struct scatterlist *sg_list, int nbytes)
return sg_nents;
}
/* Copy from len bytes of sg to dest, starting from beginning */
static inline void sg_copy(u8 *dest, struct scatterlist *sg, unsigned int len)
{
struct scatterlist *current_sg = sg;
int cpy_index = 0, next_cpy_index = current_sg->length;
while (next_cpy_index < len) {
memcpy(dest + cpy_index, (u8 *) sg_virt(current_sg),
current_sg->length);
current_sg = scatterwalk_sg_next(current_sg);
cpy_index = next_cpy_index;
next_cpy_index += current_sg->length;
}
if (cpy_index < len)
memcpy(dest + cpy_index, (u8 *) sg_virt(current_sg),
len - cpy_index);
}
/* Copy sg data, from to_skip to end, to dest */
static inline void sg_copy_part(u8 *dest, struct scatterlist *sg,
int to_skip, unsigned int end)
{
struct scatterlist *current_sg = sg;
int sg_index, cpy_index;
sg_index = current_sg->length;
while (sg_index <= to_skip) {
current_sg = scatterwalk_sg_next(current_sg);
sg_index += current_sg->length;
}
cpy_index = sg_index - to_skip;
memcpy(dest, (u8 *) sg_virt(current_sg) +
current_sg->length - cpy_index, cpy_index);
current_sg = scatterwalk_sg_next(current_sg);
if (end - sg_index)
sg_copy(dest + cpy_index, current_sg, end - sg_index);
}