diff options
Diffstat (limited to 'drivers/crypto/caam/caamalg_desc.c')
| -rw-r--r-- | drivers/crypto/caam/caamalg_desc.c | 87 |
1 files changed, 84 insertions, 3 deletions
diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c index 7571e1ac913b..04c1105eb1f5 100644 --- a/drivers/crypto/caam/caamalg_desc.c +++ b/drivers/crypto/caam/caamalg_desc.c @@ -2,12 +2,13 @@ /* * Shared descriptors for aead, skcipher algorithms * - * Copyright 2016-2019 NXP + * Copyright 2016-2019, 2025 NXP */ #include "compat.h" #include "desc_constr.h" #include "caamalg_desc.h" +#include <soc/fsl/caam-blob.h> /* * For aead functions, read payload and write payload, @@ -1364,6 +1365,84 @@ static inline void skcipher_append_src_dst(u32 *desc) append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); } +void cnstr_desc_skcipher_enc_dec(u32 * const desc, struct alginfo *cdata, + dma_addr_t src, dma_addr_t dst, unsigned int data_sz, + unsigned int in_options, unsigned int out_options, + unsigned int ivsize, const bool encrypt) +{ + u32 options = cdata->algtype | OP_ALG_AS_INIT; + + if (encrypt) + options |= OP_ALG_ENCRYPT; + else + options |= OP_ALG_DECRYPT; + + init_job_desc(desc, 0); + + append_jump(desc, JUMP_JSL | JUMP_TYPE_LOCAL | + JUMP_COND_NOP | JUMP_TEST_ALL | 1); + + append_key(desc, cdata->protected_key_dma, cdata->plain_keylen, + CLASS_1 | KEY_DEST_CLASS_REG | cdata->key_cmd_opt); + + append_seq_in_ptr(desc, src, data_sz, in_options); + + append_seq_out_ptr(desc, dst, data_sz, out_options); + + /* Load IV, if there is one */ + if (ivsize) + append_seq_load(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB); + + append_operation(desc, options); + + skcipher_append_src_dst(desc); + + /* Store IV */ + if (ivsize) + append_seq_store(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB); + + print_hex_dump_debug("skcipher_enc_dec job desc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), + 1); +} +EXPORT_SYMBOL(cnstr_desc_skcipher_enc_dec); + +void cnstr_desc_protected_blob_decap(u32 * const desc, struct alginfo *cdata, + dma_addr_t next_desc_addr) +{ + u32 protected_store; + + init_job_desc(desc, 0); + + /* Load key modifier */ + append_load_as_imm(desc, KEYMOD, sizeof(KEYMOD) - 1, + LDST_CLASS_2_CCB | LDST_SRCDST_BYTE_KEY); + + append_seq_in_ptr_intlen(desc, cdata->key_dma, + cdata->plain_keylen + CAAM_BLOB_OVERHEAD, 0); + + append_seq_out_ptr_intlen(desc, cdata->protected_key_dma, + cdata->plain_keylen, 0); + + protected_store = OP_PCLID_BLOB | OP_PCL_BLOB_BLACK; + if ((cdata->key_cmd_opt >> KEY_EKT_OFFSET) & 1) + protected_store |= OP_PCL_BLOB_EKT; + + append_operation(desc, OP_TYPE_DECAP_PROTOCOL | protected_store); + + if (next_desc_addr) { + append_jump(desc, JUMP_TYPE_NONLOCAL | JUMP_TEST_ALL); + append_ptr(desc, next_desc_addr); + } + + print_hex_dump_debug("protected blob decap job desc@" __stringify(__LINE__) ":", + DUMP_PREFIX_ADDRESS, 16, 4, desc, + desc_bytes(desc), 1); +} +EXPORT_SYMBOL(cnstr_desc_protected_blob_decap); + /** * cnstr_shdsc_skcipher_encap - skcipher encapsulation shared descriptor * @desc: pointer to buffer used for descriptor construction @@ -1391,7 +1470,8 @@ void cnstr_shdsc_skcipher_encap(u32 * const desc, struct alginfo *cdata, /* Load class1 key only */ append_key_as_imm(desc, cdata->key_virt, cdata->keylen, - cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + cdata->plain_keylen, CLASS_1 | KEY_DEST_CLASS_REG + | cdata->key_cmd_opt); /* Load nonce into CONTEXT1 reg */ if (is_rfc3686) { @@ -1466,7 +1546,8 @@ void cnstr_shdsc_skcipher_decap(u32 * const desc, struct alginfo *cdata, /* Load class1 key only */ append_key_as_imm(desc, cdata->key_virt, cdata->keylen, - cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + cdata->plain_keylen, CLASS_1 | KEY_DEST_CLASS_REG + | cdata->key_cmd_opt); /* Load nonce into CONTEXT1 reg */ if (is_rfc3686) { |