mirror of https://gitee.com/openkylin/linux.git
1602 lines
53 KiB
C
1602 lines
53 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Shared descriptors for aead, skcipher algorithms
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*
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* Copyright 2016-2019 NXP
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*/
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#include "compat.h"
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#include "desc_constr.h"
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#include "caamalg_desc.h"
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/*
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* For aead functions, read payload and write payload,
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* both of which are specified in req->src and req->dst
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*/
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static inline void aead_append_src_dst(u32 *desc, u32 msg_type)
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{
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append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF);
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append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH |
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KEY_VLF | msg_type | FIFOLD_TYPE_LASTBOTH);
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}
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/* Set DK bit in class 1 operation if shared */
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static inline void append_dec_op1(u32 *desc, u32 type)
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{
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u32 *jump_cmd, *uncond_jump_cmd;
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/* DK bit is valid only for AES */
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if ((type & OP_ALG_ALGSEL_MASK) != OP_ALG_ALGSEL_AES) {
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append_operation(desc, type | OP_ALG_AS_INITFINAL |
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OP_ALG_DECRYPT);
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return;
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}
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jump_cmd = append_jump(desc, JUMP_TEST_ALL | JUMP_COND_SHRD);
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append_operation(desc, type | OP_ALG_AS_INITFINAL |
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OP_ALG_DECRYPT);
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uncond_jump_cmd = append_jump(desc, JUMP_TEST_ALL);
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set_jump_tgt_here(desc, jump_cmd);
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append_operation(desc, type | OP_ALG_AS_INITFINAL |
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OP_ALG_DECRYPT | OP_ALG_AAI_DK);
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set_jump_tgt_here(desc, uncond_jump_cmd);
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}
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/**
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* cnstr_shdsc_aead_null_encap - IPSec ESP encapsulation shared descriptor
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* (non-protocol) with no (null) encryption.
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* @desc: pointer to buffer used for descriptor construction
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* @adata: pointer to authentication transform definitions.
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* A split key is required for SEC Era < 6; the size of the split key
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* is specified in this case. Valid algorithm values - one of
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* OP_ALG_ALGSEL_{MD5, SHA1, SHA224, SHA256, SHA384, SHA512} ANDed
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* with OP_ALG_AAI_HMAC_PRECOMP.
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* @icvsize: integrity check value (ICV) size (truncated or full)
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* @era: SEC Era
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*/
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void cnstr_shdsc_aead_null_encap(u32 * const desc, struct alginfo *adata,
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unsigned int icvsize, int era)
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{
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u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd;
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init_sh_desc(desc, HDR_SHARE_SERIAL);
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/* Skip if already shared */
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key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
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JUMP_COND_SHRD);
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if (era < 6) {
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if (adata->key_inline)
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append_key_as_imm(desc, adata->key_virt,
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adata->keylen_pad, adata->keylen,
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CLASS_2 | KEY_DEST_MDHA_SPLIT |
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KEY_ENC);
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else
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append_key(desc, adata->key_dma, adata->keylen,
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CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC);
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} else {
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append_proto_dkp(desc, adata);
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}
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set_jump_tgt_here(desc, key_jump_cmd);
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/* assoclen + cryptlen = seqinlen */
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append_math_sub(desc, REG3, SEQINLEN, REG0, CAAM_CMD_SZ);
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/* Prepare to read and write cryptlen + assoclen bytes */
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append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
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append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
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/*
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* MOVE_LEN opcode is not available in all SEC HW revisions,
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* thus need to do some magic, i.e. self-patch the descriptor
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* buffer.
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*/
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read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF |
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MOVE_DEST_MATH3 |
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(0x6 << MOVE_LEN_SHIFT));
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write_move_cmd = append_move(desc, MOVE_SRC_MATH3 |
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MOVE_DEST_DESCBUF |
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MOVE_WAITCOMP |
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(0x8 << MOVE_LEN_SHIFT));
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/* Class 2 operation */
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append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
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OP_ALG_ENCRYPT);
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/* Read and write cryptlen bytes */
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aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1);
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set_move_tgt_here(desc, read_move_cmd);
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set_move_tgt_here(desc, write_move_cmd);
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append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO);
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append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO |
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MOVE_AUX_LS);
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/* Write ICV */
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append_seq_store(desc, icvsize, LDST_CLASS_2_CCB |
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LDST_SRCDST_BYTE_CONTEXT);
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#ifdef DEBUG
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print_hex_dump(KERN_ERR,
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"aead null enc shdesc@" __stringify(__LINE__)": ",
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DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
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#endif
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}
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EXPORT_SYMBOL(cnstr_shdsc_aead_null_encap);
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/**
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* cnstr_shdsc_aead_null_decap - IPSec ESP decapsulation shared descriptor
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* (non-protocol) with no (null) decryption.
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* @desc: pointer to buffer used for descriptor construction
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* @adata: pointer to authentication transform definitions.
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* A split key is required for SEC Era < 6; the size of the split key
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* is specified in this case. Valid algorithm values - one of
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* OP_ALG_ALGSEL_{MD5, SHA1, SHA224, SHA256, SHA384, SHA512} ANDed
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* with OP_ALG_AAI_HMAC_PRECOMP.
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* @icvsize: integrity check value (ICV) size (truncated or full)
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* @era: SEC Era
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*/
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void cnstr_shdsc_aead_null_decap(u32 * const desc, struct alginfo *adata,
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unsigned int icvsize, int era)
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{
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u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd, *jump_cmd;
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init_sh_desc(desc, HDR_SHARE_SERIAL);
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/* Skip if already shared */
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key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
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JUMP_COND_SHRD);
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if (era < 6) {
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if (adata->key_inline)
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append_key_as_imm(desc, adata->key_virt,
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adata->keylen_pad, adata->keylen,
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CLASS_2 | KEY_DEST_MDHA_SPLIT |
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KEY_ENC);
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else
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append_key(desc, adata->key_dma, adata->keylen,
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CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC);
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} else {
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append_proto_dkp(desc, adata);
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}
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set_jump_tgt_here(desc, key_jump_cmd);
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/* Class 2 operation */
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append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
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OP_ALG_DECRYPT | OP_ALG_ICV_ON);
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/* assoclen + cryptlen = seqoutlen */
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append_math_sub(desc, REG2, SEQOUTLEN, REG0, CAAM_CMD_SZ);
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/* Prepare to read and write cryptlen + assoclen bytes */
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append_math_add(desc, VARSEQINLEN, ZERO, REG2, CAAM_CMD_SZ);
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append_math_add(desc, VARSEQOUTLEN, ZERO, REG2, CAAM_CMD_SZ);
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/*
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* MOVE_LEN opcode is not available in all SEC HW revisions,
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* thus need to do some magic, i.e. self-patch the descriptor
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* buffer.
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*/
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read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF |
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MOVE_DEST_MATH2 |
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(0x6 << MOVE_LEN_SHIFT));
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write_move_cmd = append_move(desc, MOVE_SRC_MATH2 |
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MOVE_DEST_DESCBUF |
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MOVE_WAITCOMP |
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(0x8 << MOVE_LEN_SHIFT));
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/* Read and write cryptlen bytes */
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aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1);
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/*
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* Insert a NOP here, since we need at least 4 instructions between
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* code patching the descriptor buffer and the location being patched.
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*/
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jump_cmd = append_jump(desc, JUMP_TEST_ALL);
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set_jump_tgt_here(desc, jump_cmd);
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set_move_tgt_here(desc, read_move_cmd);
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set_move_tgt_here(desc, write_move_cmd);
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append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO);
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append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO |
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MOVE_AUX_LS);
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append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO);
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/* Load ICV */
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append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS2 |
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FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV);
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#ifdef DEBUG
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print_hex_dump(KERN_ERR,
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"aead null dec shdesc@" __stringify(__LINE__)": ",
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DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
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#endif
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}
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EXPORT_SYMBOL(cnstr_shdsc_aead_null_decap);
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static void init_sh_desc_key_aead(u32 * const desc,
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struct alginfo * const cdata,
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struct alginfo * const adata,
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const bool is_rfc3686, u32 *nonce, int era)
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{
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u32 *key_jump_cmd;
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unsigned int enckeylen = cdata->keylen;
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/* Note: Context registers are saved. */
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init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX);
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/* Skip if already shared */
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key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
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JUMP_COND_SHRD);
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/*
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* RFC3686 specific:
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* | key = {AUTH_KEY, ENC_KEY, NONCE}
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* | enckeylen = encryption key size + nonce size
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*/
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if (is_rfc3686)
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enckeylen -= CTR_RFC3686_NONCE_SIZE;
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if (era < 6) {
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if (adata->key_inline)
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append_key_as_imm(desc, adata->key_virt,
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adata->keylen_pad, adata->keylen,
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CLASS_2 | KEY_DEST_MDHA_SPLIT |
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KEY_ENC);
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else
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append_key(desc, adata->key_dma, adata->keylen,
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CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC);
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} else {
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append_proto_dkp(desc, adata);
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}
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if (cdata->key_inline)
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append_key_as_imm(desc, cdata->key_virt, enckeylen,
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enckeylen, CLASS_1 | KEY_DEST_CLASS_REG);
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else
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append_key(desc, cdata->key_dma, enckeylen, CLASS_1 |
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KEY_DEST_CLASS_REG);
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/* Load Counter into CONTEXT1 reg */
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if (is_rfc3686) {
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append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE,
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LDST_CLASS_IND_CCB |
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LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM);
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append_move(desc,
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MOVE_SRC_OUTFIFO |
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MOVE_DEST_CLASS1CTX |
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(16 << MOVE_OFFSET_SHIFT) |
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(CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT));
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}
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set_jump_tgt_here(desc, key_jump_cmd);
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}
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/**
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* cnstr_shdsc_aead_encap - IPSec ESP encapsulation shared descriptor
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* (non-protocol).
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* @desc: pointer to buffer used for descriptor construction
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* @cdata: pointer to block cipher transform definitions
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* Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed
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* with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128.
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* @adata: pointer to authentication transform definitions.
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* A split key is required for SEC Era < 6; the size of the split key
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* is specified in this case. Valid algorithm values - one of
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* OP_ALG_ALGSEL_{MD5, SHA1, SHA224, SHA256, SHA384, SHA512} ANDed
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* with OP_ALG_AAI_HMAC_PRECOMP.
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* @ivsize: initialization vector size
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* @icvsize: integrity check value (ICV) size (truncated or full)
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* @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template
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* @nonce: pointer to rfc3686 nonce
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* @ctx1_iv_off: IV offset in CONTEXT1 register
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* @is_qi: true when called from caam/qi
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* @era: SEC Era
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*/
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void cnstr_shdsc_aead_encap(u32 * const desc, struct alginfo *cdata,
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struct alginfo *adata, unsigned int ivsize,
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unsigned int icvsize, const bool is_rfc3686,
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u32 *nonce, const u32 ctx1_iv_off, const bool is_qi,
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int era)
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{
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/* Note: Context registers are saved. */
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init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce, era);
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/* Class 2 operation */
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append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
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OP_ALG_ENCRYPT);
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if (is_qi) {
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u32 *wait_load_cmd;
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/* REG3 = assoclen */
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append_seq_load(desc, 4, LDST_CLASS_DECO |
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LDST_SRCDST_WORD_DECO_MATH3 |
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(4 << LDST_OFFSET_SHIFT));
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wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
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JUMP_COND_CALM | JUMP_COND_NCP |
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JUMP_COND_NOP | JUMP_COND_NIP |
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JUMP_COND_NIFP);
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set_jump_tgt_here(desc, wait_load_cmd);
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append_seq_load(desc, ivsize, LDST_CLASS_1_CCB |
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LDST_SRCDST_BYTE_CONTEXT |
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(ctx1_iv_off << LDST_OFFSET_SHIFT));
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}
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/* Read and write assoclen bytes */
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if (is_qi || era < 3) {
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append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
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append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
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} else {
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append_math_add(desc, VARSEQINLEN, ZERO, DPOVRD, CAAM_CMD_SZ);
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append_math_add(desc, VARSEQOUTLEN, ZERO, DPOVRD, CAAM_CMD_SZ);
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}
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/* Skip assoc data */
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append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF);
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/* read assoc before reading payload */
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append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG |
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FIFOLDST_VLF);
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/* Load Counter into CONTEXT1 reg */
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if (is_rfc3686)
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append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB |
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LDST_SRCDST_BYTE_CONTEXT |
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((ctx1_iv_off + CTR_RFC3686_IV_SIZE) <<
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LDST_OFFSET_SHIFT));
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/* Class 1 operation */
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append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
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OP_ALG_ENCRYPT);
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/* Read and write cryptlen bytes */
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append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
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append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
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aead_append_src_dst(desc, FIFOLD_TYPE_MSG1OUT2);
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/* Write ICV */
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append_seq_store(desc, icvsize, LDST_CLASS_2_CCB |
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LDST_SRCDST_BYTE_CONTEXT);
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#ifdef DEBUG
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print_hex_dump(KERN_ERR, "aead enc shdesc@" __stringify(__LINE__)": ",
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DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
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#endif
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}
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EXPORT_SYMBOL(cnstr_shdsc_aead_encap);
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/**
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* 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.
|
|
* A split key is required for SEC Era < 6; the size of the split key
|
|
* is specified in this case. 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
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|
* @icvsize: integrity check value (ICV) size (truncated or full)
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|
* @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template
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* @nonce: pointer to rfc3686 nonce
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* @ctx1_iv_off: IV offset in CONTEXT1 register
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* @is_qi: true when called from caam/qi
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* @era: SEC Era
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*/
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void cnstr_shdsc_aead_decap(u32 * const desc, struct alginfo *cdata,
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struct alginfo *adata, unsigned int ivsize,
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unsigned int icvsize, const bool geniv,
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const bool is_rfc3686, u32 *nonce,
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const u32 ctx1_iv_off, const bool is_qi, int era)
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{
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/* Note: Context registers are saved. */
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init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce, era);
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/* Class 2 operation */
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append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
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OP_ALG_DECRYPT | OP_ALG_ICV_ON);
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if (is_qi) {
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u32 *wait_load_cmd;
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/* REG3 = assoclen */
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append_seq_load(desc, 4, LDST_CLASS_DECO |
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LDST_SRCDST_WORD_DECO_MATH3 |
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(4 << LDST_OFFSET_SHIFT));
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wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
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JUMP_COND_CALM | JUMP_COND_NCP |
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JUMP_COND_NOP | JUMP_COND_NIP |
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JUMP_COND_NIFP);
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set_jump_tgt_here(desc, wait_load_cmd);
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if (!geniv)
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append_seq_load(desc, ivsize, LDST_CLASS_1_CCB |
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LDST_SRCDST_BYTE_CONTEXT |
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(ctx1_iv_off << LDST_OFFSET_SHIFT));
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}
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/* Read and write assoclen bytes */
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if (is_qi || era < 3) {
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append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
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|
if (geniv)
|
|
append_math_add_imm_u32(desc, VARSEQOUTLEN, REG3, IMM,
|
|
ivsize);
|
|
else
|
|
append_math_add(desc, VARSEQOUTLEN, ZERO, REG3,
|
|
CAAM_CMD_SZ);
|
|
} else {
|
|
append_math_add(desc, VARSEQINLEN, ZERO, DPOVRD, CAAM_CMD_SZ);
|
|
if (geniv)
|
|
append_math_add_imm_u32(desc, VARSEQOUTLEN, DPOVRD, IMM,
|
|
ivsize);
|
|
else
|
|
append_math_add(desc, VARSEQOUTLEN, ZERO, DPOVRD,
|
|
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.
|
|
* A split key is required for SEC Era < 6; the size of the split key
|
|
* is specified in this case. 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
|
|
* @era: SEC Era
|
|
*/
|
|
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, int era)
|
|
{
|
|
u32 geniv, moveiv;
|
|
|
|
/* Note: Context registers are saved. */
|
|
init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce, era);
|
|
|
|
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 */
|
|
if (is_qi || era < 3) {
|
|
append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
|
|
append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
|
|
} else {
|
|
append_math_add(desc, VARSEQINLEN, ZERO, DPOVRD, CAAM_CMD_SZ);
|
|
append_math_add(desc, VARSEQOUTLEN, ZERO, DPOVRD, 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_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) | MOVE_WAITCOMP);
|
|
|
|
/* 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) | MOVE_WAITCOMP);
|
|
|
|
/* 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);
|
|
|
|
/**
|
|
* cnstr_shdsc_chachapoly - Chacha20 + Poly1305 generic AEAD (rfc7539) and
|
|
* IPsec ESP (rfc7634, a.k.a. rfc7539esp) 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_CHACHA20 ANDed with
|
|
* OP_ALG_AAI_AEAD.
|
|
* @adata: pointer to authentication transform definitions
|
|
* Valid algorithm values - OP_ALG_ALGSEL_POLY1305 ANDed with
|
|
* OP_ALG_AAI_AEAD.
|
|
* @ivsize: initialization vector size
|
|
* @icvsize: integrity check value (ICV) size (truncated or full)
|
|
* @encap: true if encapsulation, false if decapsulation
|
|
* @is_qi: true when called from caam/qi
|
|
*/
|
|
void cnstr_shdsc_chachapoly(u32 * const desc, struct alginfo *cdata,
|
|
struct alginfo *adata, unsigned int ivsize,
|
|
unsigned int icvsize, const bool encap,
|
|
const bool is_qi)
|
|
{
|
|
u32 *key_jump_cmd, *wait_cmd;
|
|
u32 nfifo;
|
|
const bool is_ipsec = (ivsize != CHACHAPOLY_IV_SIZE);
|
|
|
|
/* Note: Context registers are saved. */
|
|
init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX);
|
|
|
|
/* 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_as_imm(desc, cdata->key_virt, cdata->keylen, cdata->keylen,
|
|
CLASS_1 | KEY_DEST_CLASS_REG);
|
|
|
|
/* For IPsec load the salt from keymat in the context register */
|
|
if (is_ipsec)
|
|
append_load_as_imm(desc, cdata->key_virt + cdata->keylen, 4,
|
|
LDST_CLASS_1_CCB | LDST_SRCDST_BYTE_CONTEXT |
|
|
4 << LDST_OFFSET_SHIFT);
|
|
|
|
set_jump_tgt_here(desc, key_jump_cmd);
|
|
|
|
/* Class 2 and 1 operations: Poly & ChaCha */
|
|
if (encap) {
|
|
append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
|
|
OP_ALG_ENCRYPT);
|
|
append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
|
|
OP_ALG_ENCRYPT);
|
|
} else {
|
|
append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
|
|
OP_ALG_DECRYPT | OP_ALG_ICV_ON);
|
|
append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
|
|
OP_ALG_DECRYPT);
|
|
}
|
|
|
|
if (is_qi) {
|
|
u32 *wait_load_cmd;
|
|
u32 ctx1_iv_off = is_ipsec ? 8 : 4;
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/*
|
|
* MAGIC with NFIFO
|
|
* Read associated data from the input and send them to class1 and
|
|
* class2 alignment blocks. From class1 send data to output fifo and
|
|
* then write it to memory since we don't need to encrypt AD.
|
|
*/
|
|
nfifo = NFIFOENTRY_DEST_BOTH | NFIFOENTRY_FC1 | NFIFOENTRY_FC2 |
|
|
NFIFOENTRY_DTYPE_POLY | NFIFOENTRY_BND;
|
|
append_load_imm_u32(desc, nfifo, LDST_CLASS_IND_CCB |
|
|
LDST_SRCDST_WORD_INFO_FIFO_SM | LDLEN_MATH3);
|
|
|
|
append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
|
|
append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
|
|
append_seq_fifo_load(desc, 0, FIFOLD_TYPE_NOINFOFIFO |
|
|
FIFOLD_CLASS_CLASS1 | LDST_VLF);
|
|
append_move_len(desc, MOVE_AUX_LS | MOVE_SRC_AUX_ABLK |
|
|
MOVE_DEST_OUTFIFO | MOVELEN_MRSEL_MATH3);
|
|
append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | LDST_VLF);
|
|
|
|
/* IPsec - copy IV at the output */
|
|
if (is_ipsec)
|
|
append_seq_fifo_store(desc, ivsize, FIFOST_TYPE_METADATA |
|
|
0x2 << 25);
|
|
|
|
wait_cmd = append_jump(desc, JUMP_JSL | JUMP_TYPE_LOCAL |
|
|
JUMP_COND_NOP | JUMP_TEST_ALL);
|
|
set_jump_tgt_here(desc, wait_cmd);
|
|
|
|
if (encap) {
|
|
/* 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);
|
|
} else {
|
|
/* 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 for verification */
|
|
append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS2 |
|
|
FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV);
|
|
}
|
|
|
|
print_hex_dump_debug("chachapoly shdesc@" __stringify(__LINE__)": ",
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
|
|
1);
|
|
}
|
|
EXPORT_SYMBOL(cnstr_shdsc_chachapoly);
|
|
|
|
/* For skcipher encrypt and decrypt, read from req->src and write to req->dst */
|
|
static inline void skcipher_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_skcipher_encap - skcipher 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
|
|
* - OP_ALG_ALGSEL_CHACHA20
|
|
* @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_skcipher_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) {
|
|
const 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, if there is one */
|
|
if (ivsize)
|
|
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 */
|
|
skcipher_append_src_dst(desc);
|
|
|
|
#ifdef DEBUG
|
|
print_hex_dump(KERN_ERR,
|
|
"skcipher enc shdesc@" __stringify(__LINE__)": ",
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
|
|
#endif
|
|
}
|
|
EXPORT_SYMBOL(cnstr_shdsc_skcipher_encap);
|
|
|
|
/**
|
|
* cnstr_shdsc_skcipher_decap - skcipher 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
|
|
* - OP_ALG_ALGSEL_CHACHA20
|
|
* @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_skcipher_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) {
|
|
const 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, if there is one */
|
|
if (ivsize)
|
|
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 */
|
|
skcipher_append_src_dst(desc);
|
|
|
|
#ifdef DEBUG
|
|
print_hex_dump(KERN_ERR,
|
|
"skcipher dec shdesc@" __stringify(__LINE__)": ",
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
|
|
#endif
|
|
}
|
|
EXPORT_SYMBOL(cnstr_shdsc_skcipher_decap);
|
|
|
|
/**
|
|
* cnstr_shdsc_xts_skcipher_encap - xts skcipher 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_skcipher_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 */
|
|
skcipher_append_src_dst(desc);
|
|
|
|
#ifdef DEBUG
|
|
print_hex_dump(KERN_ERR,
|
|
"xts skcipher enc shdesc@" __stringify(__LINE__) ": ",
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
|
|
#endif
|
|
}
|
|
EXPORT_SYMBOL(cnstr_shdsc_xts_skcipher_encap);
|
|
|
|
/**
|
|
* cnstr_shdsc_xts_skcipher_decap - xts skcipher 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_skcipher_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 */
|
|
skcipher_append_src_dst(desc);
|
|
|
|
#ifdef DEBUG
|
|
print_hex_dump(KERN_ERR,
|
|
"xts skcipher dec shdesc@" __stringify(__LINE__) ": ",
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
|
|
#endif
|
|
}
|
|
EXPORT_SYMBOL(cnstr_shdsc_xts_skcipher_decap);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("FSL CAAM descriptor support");
|
|
MODULE_AUTHOR("Freescale Semiconductor - NMG/STC");
|