Commit 1acebad3 authored by Yuan Kang's avatar Yuan Kang Committed by Herbert Xu
Browse files

crypto: caam - faster aead implementation 



Job descriptors only contain header and seq pointers.

Other commands are stored in separate shared descriptors
for encrypt, decrypt and givencrypt, stored as arrays
in caam_ctx.

This requires additional macros to create math commands
to calculate assoclen and cryptlen.

Signed-off-by: default avatarYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: default avatarKim Phillips <kim.phillips@freescale.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 885e9e2f

drivers/crypto/caam/caamalg.c

+775 −329

File changed.

Preview size limit exceeded, changes collapsed.

drivers/crypto/caam/desc_constr.h

+57 −1
Original line number Diff line number Diff line
@@ -9,7 +9,7 @@ 
#define IMMEDIATE (1 << 23)

#define CAAM_CMD_SZ sizeof(u32)

#define CAAM_PTR_SZ sizeof(dma_addr_t)

#define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * 64)

#define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE)



#ifdef DEBUG

#define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\
@@ -18,6 +18,9 @@ 
#define PRINT_POS

#endif



#define SET_OK_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \

			    LDST_SRCDST_WORD_DECOCTRL | \

			    (LDOFF_CHG_SHARE_OK_PROP << LDST_OFFSET_SHIFT))

#define DISABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \

				LDST_SRCDST_WORD_DECOCTRL | \

				(LDOFF_DISABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
@@ -203,3 +206,56 @@ static inline void append_##cmd##_imm_##type(u32 *desc, type immediate, \ 
	append_cmd(desc, immediate); \

}

APPEND_CMD_RAW_IMM(load, LOAD, u32);



/*

 * Append math command. Only the last part of destination and source need to

 * be specified

 */

#define APPEND_MATH(op, desc, dest, src_0, src_1, len) \

append_cmd(desc, CMD_MATH | MATH_FUN_##op | MATH_DEST_##dest | \

	   MATH_SRC0_##src_0 | MATH_SRC1_##src_1 | (u32) (len & MATH_LEN_MASK));



#define append_math_add(desc, dest, src0, src1, len) \

	APPEND_MATH(ADD, desc, dest, src0, src1, len)

#define append_math_sub(desc, dest, src0, src1, len) \

	APPEND_MATH(SUB, desc, dest, src0, src1, len)

#define append_math_add_c(desc, dest, src0, src1, len) \

	APPEND_MATH(ADDC, desc, dest, src0, src1, len)

#define append_math_sub_b(desc, dest, src0, src1, len) \

	APPEND_MATH(SUBB, desc, dest, src0, src1, len)

#define append_math_and(desc, dest, src0, src1, len) \

	APPEND_MATH(AND, desc, dest, src0, src1, len)

#define append_math_or(desc, dest, src0, src1, len) \

	APPEND_MATH(OR, desc, dest, src0, src1, len)

#define append_math_xor(desc, dest, src0, src1, len) \

	APPEND_MATH(XOR, desc, dest, src0, src1, len)

#define append_math_lshift(desc, dest, src0, src1, len) \

	APPEND_MATH(LSHIFT, desc, dest, src0, src1, len)

#define append_math_rshift(desc, dest, src0, src1, len) \

	APPEND_MATH(RSHIFT, desc, dest, src0, src1, len)



/* Exactly one source is IMM. Data is passed in as u32 value */

#define APPEND_MATH_IMM_u32(op, desc, dest, src_0, src_1, data) \

do { \

	APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ); \

	append_cmd(desc, data); \

} while (0);



#define append_math_add_imm_u32(desc, dest, src0, src1, data) \

	APPEND_MATH_IMM_u32(ADD, desc, dest, src0, src1, data)

#define append_math_sub_imm_u32(desc, dest, src0, src1, data) \

	APPEND_MATH_IMM_u32(SUB, desc, dest, src0, src1, data)

#define append_math_add_c_imm_u32(desc, dest, src0, src1, data) \

	APPEND_MATH_IMM_u32(ADDC, desc, dest, src0, src1, data)

#define append_math_sub_b_imm_u32(desc, dest, src0, src1, data) \

	APPEND_MATH_IMM_u32(SUBB, desc, dest, src0, src1, data)

#define append_math_and_imm_u32(desc, dest, src0, src1, data) \

	APPEND_MATH_IMM_u32(AND, desc, dest, src0, src1, data)

#define append_math_or_imm_u32(desc, dest, src0, src1, data) \

	APPEND_MATH_IMM_u32(OR, desc, dest, src0, src1, data)

#define append_math_xor_imm_u32(desc, dest, src0, src1, data) \

	APPEND_MATH_IMM_u32(XOR, desc, dest, src0, src1, data)

#define append_math_lshift_imm_u32(desc, dest, src0, src1, data) \

	APPEND_MATH_IMM_u32(LSHIFT, desc, dest, src0, src1, data)

#define append_math_rshift_imm_u32(desc, dest, src0, src1, data) \

	APPEND_MATH_IMM_u32(RSHIFT, desc, dest, src0, src1, data)