diff options
Diffstat (limited to 'drivers/crypto/caam/caamalg_desc.c')
| -rw-r--r-- | drivers/crypto/caam/caamalg_desc.c | 165 |
1 files changed, 152 insertions, 13 deletions
diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c index ceb93fbb76e6..8ae7a1be7dfd 100644 --- a/drivers/crypto/caam/caamalg_desc.c +++ b/drivers/crypto/caam/caamalg_desc.c @@ -625,10 +625,13 @@ EXPORT_SYMBOL(cnstr_shdsc_aead_givencap); * @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 icvsize) + 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; @@ -650,11 +653,35 @@ void cnstr_shdsc_gcm_encap(u32 * const desc, struct alginfo *cdata, 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 */ - append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); 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 | @@ -686,8 +713,11 @@ void cnstr_shdsc_gcm_encap(u32 * const desc, struct alginfo *cdata, append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); - /* jump the zero-payload commands */ - append_jump(desc, JUMP_TEST_ALL | 2); + /* 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); @@ -695,10 +725,18 @@ void cnstr_shdsc_gcm_encap(u32 * const desc, struct alginfo *cdata, /* 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); @@ -715,10 +753,13 @@ EXPORT_SYMBOL(cnstr_shdsc_gcm_encap); * @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 icvsize) + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) { u32 *key_jump_cmd, *zero_payload_jump_cmd, *zero_assoc_jump_cmd1; @@ -739,6 +780,24 @@ void cnstr_shdsc_gcm_decap(u32 * const desc, struct alginfo *cdata, 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 | @@ -791,10 +850,13 @@ EXPORT_SYMBOL(cnstr_shdsc_gcm_decap); * @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 icvsize) + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) { u32 *key_jump_cmd; @@ -815,7 +877,29 @@ void cnstr_shdsc_rfc4106_encap(u32 * const desc, struct alginfo *cdata, append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | OP_ALG_ENCRYPT); - append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, 8); + 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 */ @@ -823,7 +907,7 @@ void cnstr_shdsc_rfc4106_encap(u32 * const desc, struct alginfo *cdata, FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); /* Skip IV */ - append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_SKIP); /* Will read cryptlen bytes */ append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); @@ -862,10 +946,13 @@ EXPORT_SYMBOL(cnstr_shdsc_rfc4106_encap); * @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 icvsize) + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) { u32 *key_jump_cmd; @@ -887,7 +974,29 @@ void cnstr_shdsc_rfc4106_decap(u32 * const desc, struct alginfo *cdata, append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | OP_ALG_DECRYPT | OP_ALG_ICV_ON); - append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, 8); + 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 */ @@ -895,7 +1004,7 @@ void cnstr_shdsc_rfc4106_decap(u32 * const desc, struct alginfo *cdata, FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); /* Skip IV */ - append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); + append_seq_fifo_load(desc, ivsize, FIFOLD_CLASS_SKIP); /* Will read cryptlen bytes */ append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG3, CAAM_CMD_SZ); @@ -934,10 +1043,13 @@ EXPORT_SYMBOL(cnstr_shdsc_rfc4106_decap); * @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 icvsize) + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) { u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd; @@ -958,6 +1070,18 @@ void cnstr_shdsc_rfc4543_encap(u32 * const desc, struct alginfo *cdata, 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); @@ -1004,10 +1128,13 @@ EXPORT_SYMBOL(cnstr_shdsc_rfc4543_encap); * @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 icvsize) + unsigned int ivsize, unsigned int icvsize, + const bool is_qi) { u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd; @@ -1028,6 +1155,18 @@ void cnstr_shdsc_rfc4543_decap(u32 * const desc, struct alginfo *cdata, 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); |