diff options
Diffstat (limited to 'drivers/crypto/caam/caamalg_desc.c')
| -rw-r--r-- | drivers/crypto/caam/caamalg_desc.c | 1913 |
1 files changed, 1913 insertions, 0 deletions
diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c new file mode 100644 index 0000000..d162120 --- /dev/null +++ b/drivers/crypto/caam/caamalg_desc.c @@ -0,0 +1,1913 @@ +/* + * Shared descriptors for aead, ablkcipher algorithms + * + * Copyright 2016 NXP + */ + +#include "compat.h" +#include "desc_constr.h" +#include "caamalg_desc.h" + +/* + * For aead functions, read payload and write payload, + * both of which are specified in req->src and req->dst + */ +static inline void aead_append_src_dst(u32 *desc, u32 msg_type) +{ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | + KEY_VLF | msg_type | FIFOLD_TYPE_LASTBOTH); +} + +/* Set DK bit in class 1 operation if shared */ +static inline void append_dec_op1(u32 *desc, u32 type) +{ + u32 *jump_cmd, *uncond_jump_cmd; + + /* DK bit is valid only for AES */ + if ((type & OP_ALG_ALGSEL_MASK) != OP_ALG_ALGSEL_AES) { + append_operation(desc, type | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT); + return; + } + + jump_cmd = append_jump(desc, JUMP_TEST_ALL | JUMP_COND_SHRD); + append_operation(desc, type | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT); + uncond_jump_cmd = append_jump(desc, JUMP_TEST_ALL); + set_jump_tgt_here(desc, jump_cmd); + append_operation(desc, type | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_AAI_DK); + set_jump_tgt_here(desc, uncond_jump_cmd); +} + +/** + * cnstr_shdsc_aead_null_encap - IPSec ESP encapsulation shared descriptor + * (non-protocol) with no (null) encryption. + * @desc: pointer to buffer used for descriptor construction + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @icvsize: integrity check value (ICV) size (truncated or full) + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_null_encap(u32 * const desc, struct alginfo *adata, + unsigned int icvsize) +{ + u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (adata->key_inline) + append_key_as_imm(desc, adata->key_virt, adata->keylen_pad, + adata->keylen, CLASS_2 | KEY_DEST_MDHA_SPLIT | + KEY_ENC); + else + append_key(desc, adata->key_dma, adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + set_jump_tgt_here(desc, key_jump_cmd); + + /* assoclen + cryptlen = seqinlen */ + append_math_sub(desc, REG3, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Prepare to read and write cryptlen + assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* + * MOVE_LEN opcode is not available in all SEC HW revisions, + * thus need to do some magic, i.e. self-patch the descriptor + * buffer. + */ + read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | + MOVE_DEST_MATH3 | + (0x6 << MOVE_LEN_SHIFT)); + write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | + MOVE_DEST_DESCBUF | + MOVE_WAITCOMP | + (0x8 << MOVE_LEN_SHIFT)); + + /* Class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Read and write cryptlen bytes */ + aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); + + set_move_tgt_here(desc, read_move_cmd); + set_move_tgt_here(desc, write_move_cmd); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO | + MOVE_AUX_LS); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_2_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "aead null enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_null_encap); + +/** + * cnstr_shdsc_aead_null_decap - IPSec ESP decapsulation shared descriptor + * (non-protocol) with no (null) decryption. + * @desc: pointer to buffer used for descriptor construction + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @icvsize: integrity check value (ICV) size (truncated or full) + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_null_decap(u32 * const desc, struct alginfo *adata, + unsigned int icvsize) +{ + u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd, *jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (adata->key_inline) + append_key_as_imm(desc, adata->key_virt, adata->keylen_pad, + adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + else + append_key(desc, adata->key_dma, adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + /* assoclen + cryptlen = seqoutlen */ + append_math_sub(desc, REG2, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* Prepare to read and write cryptlen + assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG2, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG2, CAAM_CMD_SZ); + + /* + * MOVE_LEN opcode is not available in all SEC HW revisions, + * thus need to do some magic, i.e. self-patch the descriptor + * buffer. + */ + read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | + MOVE_DEST_MATH2 | + (0x6 << MOVE_LEN_SHIFT)); + write_move_cmd = append_move(desc, MOVE_SRC_MATH2 | + MOVE_DEST_DESCBUF | + MOVE_WAITCOMP | + (0x8 << MOVE_LEN_SHIFT)); + + /* Read and write cryptlen bytes */ + aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); + + /* + * Insert a NOP here, since we need at least 4 instructions between + * code patching the descriptor buffer and the location being patched. + */ + jump_cmd = append_jump(desc, JUMP_TEST_ALL); + set_jump_tgt_here(desc, jump_cmd); + + set_move_tgt_here(desc, read_move_cmd); + set_move_tgt_here(desc, write_move_cmd); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO | + MOVE_AUX_LS); + append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); + + /* Load ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS2 | + FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "aead null dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_null_decap); + +static void init_sh_desc_key_aead(u32 * const desc, + struct alginfo * const cdata, + struct alginfo * const adata, + const bool is_rfc3686, u32 *nonce) +{ + u32 *key_jump_cmd; + unsigned int enckeylen = cdata->keylen; + + /* Note: Context registers are saved. */ + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* + * RFC3686 specific: + * | key = {AUTH_KEY, ENC_KEY, NONCE} + * | enckeylen = encryption key size + nonce size + */ + if (is_rfc3686) + enckeylen -= CTR_RFC3686_NONCE_SIZE; + + if (adata->key_inline) + append_key_as_imm(desc, adata->key_virt, adata->keylen_pad, + adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + else + append_key(desc, adata->key_dma, adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + + if (cdata->key_inline) + append_key_as_imm(desc, cdata->key_virt, enckeylen, + enckeylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key_dma, enckeylen, CLASS_1 | + KEY_DEST_CLASS_REG); + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) { + append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, + LDST_CLASS_IND_CCB | + LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); + append_move(desc, + MOVE_SRC_OUTFIFO | + MOVE_DEST_CLASS1CTX | + (16 << MOVE_OFFSET_SHIFT) | + (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); + } + + set_jump_tgt_here(desc, key_jump_cmd); +} + +/** + * cnstr_shdsc_aead_encap - IPSec ESP encapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @nonce: pointer to rfc3686 nonce + * @ctx1_iv_off: IV offset in CONTEXT1 register + * @is_qi: true when called from caam/qi + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_encap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int ivsize, + unsigned int icvsize, const bool is_rfc3686, + u32 *nonce, const u32 ctx1_iv_off, const bool is_qi) +{ + /* Note: Context registers are saved. */ + init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce); + + /* Class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + if (is_qi) { + u32 *wait_load_cmd; + + /* REG3 = assoclen */ + append_seq_load(desc, 4, LDST_CLASS_DECO | + LDST_SRCDST_WORD_DECO_MATH3 | + (4 << LDST_OFFSET_SHIFT)); + + wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_CALM | JUMP_COND_NCP | + JUMP_COND_NOP | JUMP_COND_NIP | + JUMP_COND_NIFP); + set_jump_tgt_here(desc, wait_load_cmd); + + append_seq_load(desc, ivsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (ctx1_iv_off << LDST_OFFSET_SHIFT)); + } + + /* Read and write assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* read assoc before reading payload */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | + FIFOLDST_VLF); + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Read and write cryptlen bytes */ + append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + aead_append_src_dst(desc, FIFOLD_TYPE_MSG1OUT2); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_2_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "aead enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_encap); + +/** + * cnstr_shdsc_aead_decap - IPSec ESP decapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @nonce: pointer to rfc3686 nonce + * @ctx1_iv_off: IV offset in CONTEXT1 register + * @is_qi: true when called from caam/qi + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_decap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int ivsize, + unsigned int icvsize, const bool geniv, + const bool is_rfc3686, u32 *nonce, + const u32 ctx1_iv_off, const bool is_qi) +{ + /* Note: Context registers are saved. */ + init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce); + + /* Class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + if (is_qi) { + u32 *wait_load_cmd; + + /* REG3 = assoclen */ + append_seq_load(desc, 4, LDST_CLASS_DECO | + LDST_SRCDST_WORD_DECO_MATH3 | + (4 << LDST_OFFSET_SHIFT)); + + wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_CALM | JUMP_COND_NCP | + JUMP_COND_NOP | JUMP_COND_NIP | + JUMP_COND_NIFP); + set_jump_tgt_here(desc, wait_load_cmd); + + if (!geniv) + append_seq_load(desc, ivsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (ctx1_iv_off << LDST_OFFSET_SHIFT)); + } + + /* Read and write assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + if (geniv) + append_math_add_imm_u32(desc, VARSEQOUTLEN, REG3, IMM, ivsize); + else + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* read assoc before reading payload */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | + KEY_VLF); + + if (geniv) { + append_seq_load(desc, ivsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (ctx1_iv_off << LDST_OFFSET_SHIFT)); + append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_CLASS2INFIFO | + (ctx1_iv_off << MOVE_OFFSET_SHIFT) | ivsize); + } + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Choose operation */ + if (ctx1_iv_off) + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT); + else + append_dec_op1(desc, cdata->algtype); + + /* Read and write cryptlen bytes */ + append_math_add(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + aead_append_src_dst(desc, FIFOLD_TYPE_MSG); + + /* Load ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS2 | + FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "aead dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_decap); + +/** + * cnstr_shdsc_aead_givencap - IPSec ESP encapsulation shared descriptor + * (non-protocol) with HW-generated initialization + * vector. + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @nonce: pointer to rfc3686 nonce + * @ctx1_iv_off: IV offset in CONTEXT1 register + * @is_qi: true when called from caam/qi + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_givencap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int ivsize, + unsigned int icvsize, const bool is_rfc3686, + u32 *nonce, const u32 ctx1_iv_off, + const bool is_qi) +{ + u32 geniv, moveiv; + + /* Note: Context registers are saved. */ + init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce); + + if (is_qi) { + u32 *wait_load_cmd; + + /* REG3 = assoclen */ + append_seq_load(desc, 4, LDST_CLASS_DECO | + LDST_SRCDST_WORD_DECO_MATH3 | + (4 << LDST_OFFSET_SHIFT)); + + wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_CALM | JUMP_COND_NCP | + JUMP_COND_NOP | JUMP_COND_NIP | + JUMP_COND_NIFP); + set_jump_tgt_here(desc, wait_load_cmd); + } + + if (is_rfc3686) { + if (is_qi) + append_seq_load(desc, ivsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (ctx1_iv_off << LDST_OFFSET_SHIFT)); + + goto copy_iv; + } + + /* Generate IV */ + geniv = NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DEST_DECO | + NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_LC1 | + NFIFOENTRY_PTYPE_RND | (ivsize << NFIFOENTRY_DLEN_SHIFT); + append_load_imm_u32(desc, geniv, LDST_CLASS_IND_CCB | + LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + append_move(desc, MOVE_WAITCOMP | + MOVE_SRC_INFIFO | MOVE_DEST_CLASS1CTX | + (ctx1_iv_off << MOVE_OFFSET_SHIFT) | + (ivsize << MOVE_LEN_SHIFT)); + append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); + +copy_iv: + /* Copy IV to class 1 context */ + append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_OUTFIFO | + (ctx1_iv_off << MOVE_OFFSET_SHIFT) | + (ivsize << MOVE_LEN_SHIFT)); + + /* Return to encryption */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Read and write assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* read assoc before reading payload */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | + KEY_VLF); + + /* Copy iv from outfifo to class 2 fifo */ + moveiv = NFIFOENTRY_STYPE_OFIFO | NFIFOENTRY_DEST_CLASS2 | + NFIFOENTRY_DTYPE_MSG | (ivsize << NFIFOENTRY_DLEN_SHIFT); + append_load_imm_u32(desc, moveiv, LDST_CLASS_IND_CCB | + LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); + append_load_imm_u32(desc, ivsize, LDST_CLASS_2_CCB | + LDST_SRCDST_WORD_DATASZ_REG | LDST_IMM); + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Will write ivsize + cryptlen */ + append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Not need to reload iv */ + append_seq_fifo_load(desc, ivsize, + FIFOLD_CLASS_SKIP); + + /* Will read cryptlen */ + append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | KEY_VLF | + FIFOLD_TYPE_MSG1OUT2 | FIFOLD_TYPE_LASTBOTH); + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_2_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "aead givenc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_givencap); + +/** + * cnstr_shdsc_tls_encap - tls encapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_AES ANDed + * with OP_ALG_AAI_CBC + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values OP_ALG_ALGSEL_SHA1 ANDed with + * OP_ALG_AAI_HMAC_PRECOMP. + * @assoclen: associated data length + * @ivsize: initialization vector size + * @authsize: authentication data size + * @blocksize: block cipher size + */ +void cnstr_shdsc_tls_encap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int assoclen, + unsigned int ivsize, unsigned int authsize, + unsigned int blocksize) +{ + u32 *key_jump_cmd, *zero_payload_jump_cmd; + u32 genpad, idx_ld_datasz, idx_ld_pad, stidx; + + /* + * Compute the index (in bytes) for the LOAD with destination of + * Class 1 Data Size Register and for the LOAD that generates padding + */ + if (adata->key_inline) { + idx_ld_datasz = DESC_TLS10_ENC_LEN + adata->keylen_pad + + cdata->keylen - 4 * CAAM_CMD_SZ; + idx_ld_pad = DESC_TLS10_ENC_LEN + adata->keylen_pad + + cdata->keylen - 2 * CAAM_CMD_SZ; + } else { + idx_ld_datasz = DESC_TLS10_ENC_LEN + 2 * CAAM_PTR_SZ - + 4 * CAAM_CMD_SZ; + idx_ld_pad = DESC_TLS10_ENC_LEN + 2 * CAAM_PTR_SZ - + 2 * CAAM_CMD_SZ; + } + + stidx = 1 << HDR_START_IDX_SHIFT; + init_sh_desc(desc, HDR_SHARE_SERIAL | stidx); + + /* skip key loading if they are loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + if (adata->key_inline) + append_key_as_imm(desc, adata->key_virt, adata->keylen_pad, + adata->keylen, CLASS_2 | KEY_DEST_MDHA_SPLIT | + KEY_ENC); + else + append_key(desc, adata->key_dma, adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + + if (cdata->key_inline) + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + + set_jump_tgt_here(desc, key_jump_cmd); + + /* class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + /* class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* payloadlen = input data length - (assoclen + ivlen) */ + append_math_sub_imm_u32(desc, REG0, SEQINLEN, IMM, assoclen + ivsize); + + /* math1 = payloadlen + icvlen */ + append_math_add_imm_u32(desc, REG1, REG0, IMM, authsize); + + /* padlen = block_size - math1 % block_size */ + append_math_and_imm_u32(desc, REG3, REG1, IMM, blocksize - 1); + append_math_sub_imm_u32(desc, REG2, IMM, REG3, blocksize); + + /* cryptlen = payloadlen + icvlen + padlen */ + append_math_add(desc, VARSEQOUTLEN, REG1, REG2, 4); + + /* + * update immediate data with the padding length value + * for the LOAD in the class 1 data size register. + */ + append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH2 | + (idx_ld_datasz << MOVE_OFFSET_SHIFT) | 7); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH2 | MOVE_DEST_DESCBUF | + (idx_ld_datasz << MOVE_OFFSET_SHIFT) | 8); + + /* overwrite PL field for the padding iNFO FIFO entry */ + append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH2 | + (idx_ld_pad << MOVE_OFFSET_SHIFT) | 7); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH2 | MOVE_DEST_DESCBUF | + (idx_ld_pad << MOVE_OFFSET_SHIFT) | 8); + + /* store encrypted payload, icv and padding */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | LDST_VLF); + + /* if payload length is zero, jump to zero-payload commands */ + append_math_add(desc, VARSEQINLEN, ZERO, REG0, 4); + zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + /* load iv in context1 */ + append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_WORD_CLASS_CTX | + LDST_CLASS_1_CCB | ivsize); + + /* read assoc for authentication */ + append_seq_fifo_load(desc, assoclen, FIFOLD_CLASS_CLASS2 | + FIFOLD_TYPE_MSG); + /* insnoop payload */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | FIFOLD_TYPE_MSG | + FIFOLD_TYPE_LAST2 | FIFOLDST_VLF); + + /* jump the zero-payload commands */ + append_jump(desc, JUMP_TEST_ALL | 3); + + /* zero-payload commands */ + set_jump_tgt_here(desc, zero_payload_jump_cmd); + + /* load iv in context1 */ + append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_WORD_CLASS_CTX | + LDST_CLASS_1_CCB | ivsize); + + /* assoc data is the only data for authentication */ + append_seq_fifo_load(desc, assoclen, FIFOLD_CLASS_CLASS2 | + FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST2); + + /* send icv to encryption */ + append_move(desc, MOVE_SRC_CLASS2CTX | MOVE_DEST_CLASS1INFIFO | + authsize); + + /* update class 1 data size register with padding length */ + append_load_imm_u32(desc, 0, LDST_CLASS_1_CCB | + LDST_SRCDST_WORD_DATASZ_REG | LDST_IMM); + + /* generate padding and send it to encryption */ + genpad = NFIFOENTRY_DEST_CLASS1 | NFIFOENTRY_LC1 | NFIFOENTRY_FC1 | + NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_PTYPE_N; + append_load_imm_u32(desc, genpad, LDST_CLASS_IND_CCB | + LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "tls enc shdesc@" __stringify(__LINE__) ": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, + desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_tls_encap); + +/** + * cnstr_shdsc_tls_decap - tls decapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_AES ANDed + * with OP_ALG_AAI_CBC + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values OP_ALG_ALGSEL_ SHA1 ANDed with + * OP_ALG_AAI_HMAC_PRECOMP. + * @assoclen: associated data length + * @ivsize: initialization vector size + * @authsize: authentication data size + * @blocksize: block cipher size + */ +void cnstr_shdsc_tls_decap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int assoclen, + unsigned int ivsize, unsigned int authsize, + unsigned int blocksize) +{ + u32 stidx, jumpback; + u32 *key_jump_cmd, *zero_payload_jump_cmd, *skip_zero_jump_cmd; + /* + * Pointer Size bool determines the size of address pointers. + * false - Pointers fit in one 32-bit word. + * true - Pointers fit in two 32-bit words. + */ + static const bool ps = (CAAM_PTR_SZ != CAAM_CMD_SZ); + + stidx = 1 << HDR_START_IDX_SHIFT; + init_sh_desc(desc, HDR_SHARE_SERIAL | stidx); + + /* skip key loading if they are loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + append_key(desc, adata->key_dma, adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + + append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + + set_jump_tgt_here(desc, key_jump_cmd); + + /* class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + /* class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT); + + /* VSIL = input data length - 2 * block_size */ + append_math_sub_imm_u32(desc, VARSEQINLEN, SEQINLEN, IMM, 2 * + blocksize); + + /* + * payloadlen + icvlen + padlen = input data length - (assoclen + + * ivsize) + */ + append_math_sub_imm_u32(desc, REG3, SEQINLEN, IMM, assoclen + ivsize); + + /* skip data to the last but one cipher block */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_SKIP | LDST_VLF); + + /* load iv for the last cipher block */ + append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_WORD_CLASS_CTX | + LDST_CLASS_1_CCB | ivsize); + + /* read last cipher block */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG | + FIFOLD_TYPE_LAST1 | blocksize); + + /* move decrypted block into math0 and math1 */ + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO | MOVE_DEST_MATH0 | + blocksize); + + /* reset AES CHA */ + append_load_imm_u32(desc, CCTRL_RESET_CHA_AESA, LDST_CLASS_IND_CCB | + LDST_SRCDST_WORD_CHACTRL | LDST_IMM); + + /* rewind input sequence */ + append_seq_in_ptr_intlen(desc, 0, 65535, SQIN_RTO); + + /* key1 is in decryption form */ + append_operation(desc, cdata->algtype | OP_ALG_AAI_DK | + OP_ALG_AS_INITFINAL | OP_ALG_DECRYPT); + + /* load iv in context1 */ + append_cmd(desc, CMD_SEQ_LOAD | LDST_CLASS_1_CCB | + LDST_SRCDST_WORD_CLASS_CTX | ivsize); + + /* read sequence number */ + append_seq_fifo_load(desc, 8, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG); + /* load Type, Version and Len fields in math0 */ + append_cmd(desc, CMD_SEQ_LOAD | LDST_CLASS_DECO | + LDST_SRCDST_WORD_DECO_MATH0 | (3 << LDST_OFFSET_SHIFT) | 5); + + /* compute (padlen - 1) */ + append_math_and_imm_u64(desc, REG1, REG1, IMM, 255); + + /* math2 = icvlen + (padlen - 1) + 1 */ + append_math_add_imm_u32(desc, REG2, REG1, IMM, authsize + 1); + + append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 1); + + /* VSOL = payloadlen + icvlen + padlen */ + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, 4); + +#ifdef __LITTLE_ENDIAN + append_moveb(desc, MOVE_WAITCOMP | + MOVE_SRC_MATH0 | MOVE_DEST_MATH0 | 8); +#endif + /* update Len field */ + append_math_sub(desc, REG0, REG0, REG2, 8); + + /* store decrypted payload, icv and padding */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | LDST_VLF); + + /* VSIL = (payloadlen + icvlen + padlen) - (icvlen + padlen)*/ + append_math_sub(desc, VARSEQINLEN, REG3, REG2, 4); + + zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + /* send Type, Version and Len(pre ICV) fields to authentication */ + append_move(desc, MOVE_WAITCOMP | + MOVE_SRC_MATH0 | MOVE_DEST_CLASS2INFIFO | + (3 << MOVE_OFFSET_SHIFT) | 5); + + /* outsnooping payload */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | + FIFOLD_TYPE_MSG1OUT2 | FIFOLD_TYPE_LAST2 | + FIFOLDST_VLF); + skip_zero_jump_cmd = append_jump(desc, JUMP_TEST_ALL | 2); + + set_jump_tgt_here(desc, zero_payload_jump_cmd); + /* send Type, Version and Len(pre ICV) fields to authentication */ + append_move(desc, MOVE_WAITCOMP | MOVE_AUX_LS | + MOVE_SRC_MATH0 | MOVE_DEST_CLASS2INFIFO | + (3 << MOVE_OFFSET_SHIFT) | 5); + + set_jump_tgt_here(desc, skip_zero_jump_cmd); + append_math_add(desc, VARSEQINLEN, ZERO, REG2, 4); + + /* load icvlen and padlen */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG | + FIFOLD_TYPE_LAST1 | FIFOLDST_VLF); + + /* VSIL = (payloadlen + icvlen + padlen) - icvlen + padlen */ + append_math_sub(desc, VARSEQINLEN, REG3, REG2, 4); + + /* + * Start a new input sequence using the SEQ OUT PTR command options, + * pointer and length used when the current output sequence was defined. + */ + if (ps) { + /* + * Move the lower 32 bits of Shared Descriptor address, the + * SEQ OUT PTR command, Output Pointer (2 words) and + * Output Length into math registers. + */ +#ifdef __LITTLE_ENDIAN + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_DESCBUF | + MOVE_DEST_MATH0 | (55 * 4 << MOVE_OFFSET_SHIFT) | + 20); +#else + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_DESCBUF | + MOVE_DEST_MATH0 | (54 * 4 << MOVE_OFFSET_SHIFT) | + 20); +#endif + /* Transform SEQ OUT PTR command in SEQ IN PTR command */ + append_math_and_imm_u32(desc, REG0, REG0, IMM, + ~(CMD_SEQ_IN_PTR ^ CMD_SEQ_OUT_PTR)); + /* Append a JUMP command after the copied fields */ + jumpback = CMD_JUMP | (char)-9; + append_load_imm_u32(desc, jumpback, LDST_CLASS_DECO | LDST_IMM | + LDST_SRCDST_WORD_DECO_MATH2 | + (4 << LDST_OFFSET_SHIFT)); + append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 1); + /* Move the updated fields back to the Job Descriptor */ +#ifdef __LITTLE_ENDIAN + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH0 | + MOVE_DEST_DESCBUF | (55 * 4 << MOVE_OFFSET_SHIFT) | + 24); +#else + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH0 | + MOVE_DEST_DESCBUF | (54 * 4 << MOVE_OFFSET_SHIFT) | + 24); +#endif + /* + * Read the new SEQ IN PTR command, Input Pointer, Input Length + * and then jump back to the next command from the + * Shared Descriptor. + */ + append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 6); + } else { + /* + * Move the SEQ OUT PTR command, Output Pointer (1 word) and + * Output Length into math registers. + */ +#ifdef __LITTLE_ENDIAN + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_DESCBUF | + MOVE_DEST_MATH0 | (54 * 4 << MOVE_OFFSET_SHIFT) | + 12); +#else + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_DESCBUF | + MOVE_DEST_MATH0 | (53 * 4 << MOVE_OFFSET_SHIFT) | + 12); +#endif + /* Transform SEQ OUT PTR command in SEQ IN PTR command */ + append_math_and_imm_u64(desc, REG0, REG0, IMM, + ~(((u64)(CMD_SEQ_IN_PTR ^ + CMD_SEQ_OUT_PTR)) << 32)); + /* Append a JUMP command after the copied fields */ + jumpback = CMD_JUMP | (char)-7; + append_load_imm_u32(desc, jumpback, LDST_CLASS_DECO | LDST_IMM | + LDST_SRCDST_WORD_DECO_MATH1 | + (4 << LDST_OFFSET_SHIFT)); + append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 1); + /* Move the updated fields back to the Job Descriptor */ +#ifdef __LITTLE_ENDIAN + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH0 | + MOVE_DEST_DESCBUF | (54 * 4 << MOVE_OFFSET_SHIFT) | + 16); +#else + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH0 | + MOVE_DEST_DESCBUF | (53 * 4 << MOVE_OFFSET_SHIFT) | + 16); +#endif + /* + * Read the new SEQ IN PTR command, Input Pointer, Input Length + * and then jump back to the next command from the + * Shared Descriptor. + */ + append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 5); + } + + /* skip payload */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_SKIP | FIFOLDST_VLF); + /* check icv */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_ICV | + FIFOLD_TYPE_LAST2 | authsize); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "tls dec shdesc@" __stringify(__LINE__) ": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, + desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_tls_decap); + +/** + * cnstr_shdsc_gcm_encap - gcm encapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_qi: true when called from caam/qi + */ +void cnstr_shdsc_gcm_encap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) +{ + u32 *key_jump_cmd, *zero_payload_jump_cmd, *zero_assoc_jump_cmd1, + *zero_assoc_jump_cmd2; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* skip key loading if they are loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + if (is_qi) { + u32 *wait_load_cmd; + + /* REG3 = assoclen */ + append_seq_load(desc, 4, LDST_CLASS_DECO | + LDST_SRCDST_WORD_DECO_MATH3 | + (4 << LDST_OFFSET_SHIFT)); + + wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_CALM | JUMP_COND_NCP | + JUMP_COND_NOP | JUMP_COND_NIP | + JUMP_COND_NIFP); + set_jump_tgt_here(desc, wait_load_cmd); + + append_math_sub_imm_u32(desc, VARSEQOUTLEN, SEQINLEN, IMM, + ivsize); + } else { + append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG0, + CAAM_CMD_SZ); + } + + /* if assoclen + cryptlen is ZERO, skip to ICV write */ + zero_assoc_jump_cmd2 = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + if (is_qi) + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV | FIFOLD_TYPE_FLUSH1); + + /* if assoclen is ZERO, skip reading the assoc data */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + zero_assoc_jump_cmd1 = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* cryptlen = seqinlen - assoclen */ + append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG3, CAAM_CMD_SZ); + + /* if cryptlen is ZERO jump to zero-payload commands */ + zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + /* read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); + set_jump_tgt_here(desc, zero_assoc_jump_cmd1); + + append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* write encrypted data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* read payload data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); + + /* jump to ICV writing */ + if (is_qi) + append_jump(desc, JUMP_TEST_ALL | 4); + else + append_jump(desc, JUMP_TEST_ALL | 2); + + /* zero-payload commands */ + set_jump_tgt_here(desc, zero_payload_jump_cmd); + + /* read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_LAST1); + if (is_qi) + /* jump to ICV writing */ + append_jump(desc, JUMP_TEST_ALL | 2); + + /* There is no input data */ + set_jump_tgt_here(desc, zero_assoc_jump_cmd2); + + if (is_qi) + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV | FIFOLD_TYPE_FLUSH1 | + FIFOLD_TYPE_LAST1); + + /* write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "gcm enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_gcm_encap); + +/** + * cnstr_shdsc_gcm_decap - gcm decapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_qi: true when called from caam/qi + */ +void cnstr_shdsc_gcm_decap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) +{ + u32 *key_jump_cmd, *zero_payload_jump_cmd, *zero_assoc_jump_cmd1; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* skip key loading if they are loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | + JUMP_TEST_ALL | JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + if (is_qi) { + u32 *wait_load_cmd; + + /* REG3 = assoclen */ + append_seq_load(desc, 4, LDST_CLASS_DECO | + LDST_SRCDST_WORD_DECO_MATH3 | + (4 << LDST_OFFSET_SHIFT)); + + wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_CALM | JUMP_COND_NCP | + JUMP_COND_NOP | JUMP_COND_NIP | + JUMP_COND_NIFP); + set_jump_tgt_here(desc, wait_load_cmd); + + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV | FIFOLD_TYPE_FLUSH1); + } + + /* if assoclen is ZERO, skip reading the assoc data */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + zero_assoc_jump_cmd1 = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); + + set_jump_tgt_here(desc, zero_assoc_jump_cmd1); + + /* cryptlen = seqoutlen - assoclen */ + append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* jump to zero-payload command if cryptlen is zero */ + zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* store encrypted data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* read payload data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); + + /* zero-payload command */ + set_jump_tgt_here(desc, zero_payload_jump_cmd); + + /* read ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "gcm dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_gcm_decap); + +/** + * cnstr_shdsc_rfc4106_encap - IPSec ESP gcm encapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_qi: true when called from caam/qi + */ +void cnstr_shdsc_rfc4106_encap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) +{ + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip key loading if it is loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + if (is_qi) { + u32 *wait_load_cmd; + + /* REG3 = assoclen */ + append_seq_load(desc, 4, LDST_CLASS_DECO | + LDST_SRCDST_WORD_DECO_MATH3 | + (4 << LDST_OFFSET_SHIFT)); + + wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_CALM | JUMP_COND_NCP | + JUMP_COND_NOP | JUMP_COND_NIP | + JUMP_COND_NIFP); + set_jump_tgt_here(desc, wait_load_cmd); + + /* Read salt and IV */ + append_fifo_load_as_imm(desc, (void *)(cdata->key_virt + + cdata->keylen), 4, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV); + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV | FIFOLD_TYPE_FLUSH1); + } + + append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, ivsize); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); + + /* Skip IV */ + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_SKIP); + + /* Will read cryptlen bytes */ + append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Workaround for erratum A-005473 (simultaneous SEQ FIFO skips) */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* cryptlen = seqoutlen - assoclen */ + append_math_sub(desc, VARSEQOUTLEN, VARSEQINLEN, REG0, CAAM_CMD_SZ); + + /* Write encrypted data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* Read payload data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "rfc4106 enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_rfc4106_encap); + +/** + * cnstr_shdsc_rfc4106_decap - IPSec ESP gcm decapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_qi: true when called from caam/qi + */ +void cnstr_shdsc_rfc4106_decap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) +{ + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip key loading if it is loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + if (is_qi) { + u32 *wait_load_cmd; + + /* REG3 = assoclen */ + append_seq_load(desc, 4, LDST_CLASS_DECO | + LDST_SRCDST_WORD_DECO_MATH3 | + (4 << LDST_OFFSET_SHIFT)); + + wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_CALM | JUMP_COND_NCP | + JUMP_COND_NOP | JUMP_COND_NIP | + JUMP_COND_NIFP); + set_jump_tgt_here(desc, wait_load_cmd); + + /* Read salt and IV */ + append_fifo_load_as_imm(desc, (void *)(cdata->key_virt + + cdata->keylen), 4, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV); + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV | FIFOLD_TYPE_FLUSH1); + } + + append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, ivsize); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); + + /* Skip IV */ + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_SKIP); + + /* Will read cryptlen bytes */ + append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG3, CAAM_CMD_SZ); + + /* Workaround for erratum A-005473 (simultaneous SEQ FIFO skips) */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* Will write cryptlen bytes */ + append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* Store payload data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* Read encrypted data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); + + /* Read ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "rfc4106 dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_rfc4106_decap); + +/** + * cnstr_shdsc_rfc4543_encap - IPSec ESP gmac encapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_qi: true when called from caam/qi + */ +void cnstr_shdsc_rfc4543_encap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) +{ + u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip key loading if it is loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + if (is_qi) { + /* assoclen is not needed, skip it */ + append_seq_fifo_load(desc, 4, FIFOLD_CLASS_SKIP); + + /* Read salt and IV */ + append_fifo_load_as_imm(desc, (void *)(cdata->key_virt + + cdata->keylen), 4, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV); + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV | FIFOLD_TYPE_FLUSH1); + } + + /* assoclen + cryptlen = seqinlen */ + append_math_sub(desc, REG3, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* + * MOVE_LEN opcode is not available in all SEC HW revisions, + * thus need to do some magic, i.e. self-patch the descriptor + * buffer. + */ + read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH3 | + (0x6 << MOVE_LEN_SHIFT)); + write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | MOVE_DEST_DESCBUF | + (0x8 << MOVE_LEN_SHIFT)); + + /* Will read assoclen + cryptlen bytes */ + append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Will write assoclen + cryptlen bytes */ + append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Read and write assoclen + cryptlen bytes */ + aead_append_src_dst(desc, FIFOLD_TYPE_AAD); + + set_move_tgt_here(desc, read_move_cmd); + set_move_tgt_here(desc, write_move_cmd); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + /* Move payload data to OFIFO */ + append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "rfc4543 enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_rfc4543_encap); + +/** + * cnstr_shdsc_rfc4543_decap - IPSec ESP gmac decapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_qi: true when called from caam/qi + */ +void cnstr_shdsc_rfc4543_decap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) +{ + u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip key loading if it is loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + if (is_qi) { + /* assoclen is not needed, skip it */ + append_seq_fifo_load(desc, 4, FIFOLD_CLASS_SKIP); + + /* Read salt and IV */ + append_fifo_load_as_imm(desc, (void *)(cdata->key_virt + + cdata->keylen), 4, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV); + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_IV | FIFOLD_TYPE_FLUSH1); + } + + /* assoclen + cryptlen = seqoutlen */ + append_math_sub(desc, REG3, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* + * MOVE_LEN opcode is not available in all SEC HW revisions, + * thus need to do some magic, i.e. self-patch the descriptor + * buffer. + */ + read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH3 | + (0x6 << MOVE_LEN_SHIFT)); + write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | MOVE_DEST_DESCBUF | + (0x8 << MOVE_LEN_SHIFT)); + + /* Will read assoclen + cryptlen bytes */ + append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* Will write assoclen + cryptlen bytes */ + append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* Store payload data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* In-snoop assoclen + cryptlen data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_LAST2FLUSH1); + + set_move_tgt_here(desc, read_move_cmd); + set_move_tgt_here(desc, write_move_cmd); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + /* Move payload data to OFIFO */ + append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO); + append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); + + /* Read ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "rfc4543 dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_rfc4543_decap); + +/* + * For ablkcipher encrypt and decrypt, read from req->src and + * write to req->dst + */ +static inline void ablkcipher_append_src_dst(u32 *desc) +{ + append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | + KEY_VLF | FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); +} + +/** + * cnstr_shdsc_ablkcipher_encap - ablkcipher encapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @ivsize: initialization vector size + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @ctx1_iv_off: IV offset in CONTEXT1 register + */ +void cnstr_shdsc_ablkcipher_encap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, const bool is_rfc3686, + const u32 ctx1_iv_off) +{ + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 key only */ + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load nonce into CONTEXT1 reg */ + if (is_rfc3686) { + u8 *nonce = cdata->key_virt + cdata->keylen; + + append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, + LDST_CLASS_IND_CCB | + LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO | + MOVE_DEST_CLASS1CTX | (16 << MOVE_OFFSET_SHIFT) | + (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); + } + + set_jump_tgt_here(desc, key_jump_cmd); + + /* Load iv */ + append_seq_load(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT)); + + /* Load counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Load operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "ablkcipher enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_ablkcipher_encap); + +/** + * cnstr_shdsc_ablkcipher_decap - ablkcipher decapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @ivsize: initialization vector size + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @ctx1_iv_off: IV offset in CONTEXT1 register + */ +void cnstr_shdsc_ablkcipher_decap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, const bool is_rfc3686, + const u32 ctx1_iv_off) +{ + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 key only */ + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load nonce into CONTEXT1 reg */ + if (is_rfc3686) { + u8 *nonce = cdata->key_virt + cdata->keylen; + + append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, + LDST_CLASS_IND_CCB | + LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO | + MOVE_DEST_CLASS1CTX | (16 << MOVE_OFFSET_SHIFT) | + (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); + } + + set_jump_tgt_here(desc, key_jump_cmd); + + /* load IV */ + append_seq_load(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT)); + + /* Load counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Choose operation */ + if (ctx1_iv_off) + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT); + else + append_dec_op1(desc, cdata->algtype); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "ablkcipher dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_ablkcipher_decap); + +/** + * cnstr_shdsc_ablkcipher_givencap - ablkcipher encapsulation shared descriptor + * with HW-generated initialization vector. + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC. + * @ivsize: initialization vector size + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @ctx1_iv_off: IV offset in CONTEXT1 register + */ +void cnstr_shdsc_ablkcipher_givencap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, const bool is_rfc3686, + const u32 ctx1_iv_off) +{ + u32 *key_jump_cmd, geniv; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 key only */ + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load Nonce into CONTEXT1 reg */ + if (is_rfc3686) { + u8 *nonce = cdata->key_virt + cdata->keylen; + + append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, + LDST_CLASS_IND_CCB | + LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO | + MOVE_DEST_CLASS1CTX | (16 << MOVE_OFFSET_SHIFT) | + (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); + } + set_jump_tgt_here(desc, key_jump_cmd); + + /* Generate IV */ + geniv = NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DEST_DECO | + NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_LC1 | NFIFOENTRY_PTYPE_RND | + (ivsize << NFIFOENTRY_DLEN_SHIFT); + append_load_imm_u32(desc, geniv, LDST_CLASS_IND_CCB | + LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_INFIFO | + MOVE_DEST_CLASS1CTX | (ivsize << MOVE_LEN_SHIFT) | + (ctx1_iv_off << MOVE_OFFSET_SHIFT)); + append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); + + /* Copy generated IV to memory */ + append_seq_store(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT)); + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + if (ctx1_iv_off) + append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | JUMP_COND_NCP | + (1 << JUMP_OFFSET_SHIFT)); + + /* Load operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "ablkcipher givenc shdesc@" __stringify(__LINE__) ": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_ablkcipher_givencap); + +/** + * cnstr_shdsc_xts_ablkcipher_encap - xts ablkcipher encapsulation shared + * descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_XTS. + */ +void cnstr_shdsc_xts_ablkcipher_encap(u32 * const desc, struct alginfo *cdata) +{ + __be64 sector_size = cpu_to_be64(512); + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 keys only */ + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load sector size with index 40 bytes (0x28) */ + append_load_as_imm(desc, (void *)§or_size, 8, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (0x28 << LDST_OFFSET_SHIFT)); + + set_jump_tgt_here(desc, key_jump_cmd); + + /* + * create sequence for loading the sector index + * Upper 8B of IV - will be used as sector index + * Lower 8B of IV - will be discarded + */ + append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x20 << LDST_OFFSET_SHIFT)); + append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); + + /* Load operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "xts ablkcipher enc shdesc@" __stringify(__LINE__) ": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_xts_ablkcipher_encap); + +/** + * cnstr_shdsc_xts_ablkcipher_decap - xts ablkcipher decapsulation shared + * descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_XTS. + */ +void cnstr_shdsc_xts_ablkcipher_decap(u32 * const desc, struct alginfo *cdata) +{ + __be64 sector_size = cpu_to_be64(512); + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 key only */ + append_key_as_imm(desc, cdata->key_virt, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load sector size with index 40 bytes (0x28) */ + append_load_as_imm(desc, (void *)§or_size, 8, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (0x28 << LDST_OFFSET_SHIFT)); + + set_jump_tgt_here(desc, key_jump_cmd); + + /* + * create sequence for loading the sector index + * Upper 8B of IV - will be used as sector index + * Lower 8B of IV - will be discarded + */ + append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x20 << LDST_OFFSET_SHIFT)); + append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); + + /* Load operation */ + append_dec_op1(desc, cdata->algtype); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "xts ablkcipher dec shdesc@" __stringify(__LINE__) ": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_xts_ablkcipher_decap); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("FSL CAAM descriptor support"); +MODULE_AUTHOR("Freescale Semiconductor - NMG/STC"); |