2011-03-13 08:54:26 +00:00
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/*
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* caam - Freescale FSL CAAM support for crypto API
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*
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* Copyright 2008-2011 Freescale Semiconductor, Inc.
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*
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* Based on talitos crypto API driver.
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*
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* relationship of job descriptors to shared descriptors (SteveC Dec 10 2008):
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*
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* --------------- ---------------
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* | JobDesc #1 |-------------------->| ShareDesc |
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* | *(packet 1) | | (PDB) |
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* --------------- |------------->| (hashKey) |
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* . | | (cipherKey) |
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* . | |-------->| (operation) |
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* --------------- | | ---------------
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* | JobDesc #2 |------| |
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* | *(packet 2) | |
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* --------------- |
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* . |
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* . |
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* --------------- |
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* | JobDesc #3 |------------
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* | *(packet 3) |
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* ---------------
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*
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* The SharedDesc never changes for a connection unless rekeyed, but
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* each packet will likely be in a different place. So all we need
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* to know to process the packet is where the input is, where the
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* output goes, and what context we want to process with. Context is
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* in the SharedDesc, packet references in the JobDesc.
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*
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* So, a job desc looks like:
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*
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* ---------------------
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* | Header |
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* | ShareDesc Pointer |
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* | SEQ_OUT_PTR |
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* | (output buffer) |
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* | SEQ_IN_PTR |
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* | (input buffer) |
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* | LOAD (to DECO) |
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* ---------------------
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*/
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#include "compat.h"
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#include "regs.h"
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#include "intern.h"
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#include "desc_constr.h"
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#include "jr.h"
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#include "error.h"
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/*
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* crypto alg
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*/
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#define CAAM_CRA_PRIORITY 3000
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/* max key is sum of AES_MAX_KEY_SIZE, max split key size */
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#define CAAM_MAX_KEY_SIZE (AES_MAX_KEY_SIZE + \
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SHA512_DIGEST_SIZE * 2)
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/* max IV is max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */
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#define CAAM_MAX_IV_LENGTH 16
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2011-05-15 03:08:17 +00:00
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/* length of descriptors text */
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2011-07-15 03:21:42 +00:00
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#define DESC_JOB_IO_LEN (CAAM_CMD_SZ * 3 + CAAM_PTR_SZ * 3)
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#define DESC_AEAD_BASE (4 * CAAM_CMD_SZ)
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#define DESC_AEAD_ENC_LEN (DESC_AEAD_BASE + 16 * CAAM_CMD_SZ)
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#define DESC_AEAD_DEC_LEN (DESC_AEAD_BASE + 21 * CAAM_CMD_SZ)
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#define DESC_AEAD_GIVENC_LEN (DESC_AEAD_ENC_LEN + 7 * CAAM_CMD_SZ)
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2011-07-15 03:21:42 +00:00
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#define DESC_ABLKCIPHER_BASE (3 * CAAM_CMD_SZ)
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#define DESC_ABLKCIPHER_ENC_LEN (DESC_ABLKCIPHER_BASE + \
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20 * CAAM_CMD_SZ)
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#define DESC_ABLKCIPHER_DEC_LEN (DESC_ABLKCIPHER_BASE + \
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15 * CAAM_CMD_SZ)
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2011-07-15 03:21:42 +00:00
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#define DESC_MAX_USED_BYTES (DESC_AEAD_GIVENC_LEN + \
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CAAM_MAX_KEY_SIZE)
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#define DESC_MAX_USED_LEN (DESC_MAX_USED_BYTES / CAAM_CMD_SZ)
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2011-05-15 03:08:17 +00:00
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2011-03-13 08:54:26 +00:00
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#ifdef DEBUG
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/* for print_hex_dumps with line references */
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#define xstr(s) str(s)
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#define str(s) #s
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#define debug(format, arg...) printk(format, arg)
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#else
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#define debug(format, arg...)
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#endif
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2011-07-15 03:21:42 +00:00
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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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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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* Wait for completion of class 1 key loading before allowing
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* error propagation
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*/
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static inline void append_dec_shr_done(u32 *desc)
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{
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u32 *jump_cmd;
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jump_cmd = append_jump(desc, JUMP_CLASS_CLASS1 | JUMP_TEST_ALL);
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set_jump_tgt_here(desc, jump_cmd);
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append_cmd(desc, SET_OK_PROP_ERRORS | CMD_LOAD);
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}
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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_load(desc, 0, FIFOLD_CLASS_BOTH |
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KEY_VLF | msg_type | FIFOLD_TYPE_LASTBOTH);
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append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF);
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}
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/*
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* For aead encrypt and decrypt, read iv for both classes
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*/
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static inline void aead_append_ld_iv(u32 *desc, int ivsize)
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{
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append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_BYTE_CONTEXT |
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LDST_CLASS_1_CCB | ivsize);
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append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_CLASS2INFIFO | ivsize);
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}
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2011-07-15 03:21:42 +00:00
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/*
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* For ablkcipher encrypt and decrypt, read from req->src and
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* write to req->dst
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*/
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static inline void ablkcipher_append_src_dst(u32 *desc)
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{
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append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); \
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append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); \
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append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | \
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KEY_VLF | FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); \
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append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); \
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}
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2011-07-15 03:21:42 +00:00
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/*
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* If all data, including src (with assoc and iv) or dst (with iv only) are
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* contiguous
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*/
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#define GIV_SRC_CONTIG 1
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#define GIV_DST_CONTIG (1 << 1)
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2011-03-13 08:54:26 +00:00
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/*
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* per-session context
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*/
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struct caam_ctx {
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struct device *jrdev;
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2011-07-15 03:21:42 +00:00
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u32 sh_desc_enc[DESC_MAX_USED_LEN];
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u32 sh_desc_dec[DESC_MAX_USED_LEN];
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u32 sh_desc_givenc[DESC_MAX_USED_LEN];
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dma_addr_t sh_desc_enc_dma;
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dma_addr_t sh_desc_dec_dma;
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dma_addr_t sh_desc_givenc_dma;
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2011-03-13 08:54:26 +00:00
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u32 class1_alg_type;
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u32 class2_alg_type;
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u32 alg_op;
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2011-07-15 03:21:42 +00:00
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u8 key[CAAM_MAX_KEY_SIZE];
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2011-07-15 03:21:41 +00:00
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dma_addr_t key_dma;
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2011-03-13 08:54:26 +00:00
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unsigned int enckeylen;
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unsigned int split_key_len;
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unsigned int split_key_pad_len;
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unsigned int authsize;
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};
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2011-07-15 03:21:42 +00:00
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static void append_key_aead(u32 *desc, struct caam_ctx *ctx,
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int keys_fit_inline)
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{
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if (keys_fit_inline) {
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append_key_as_imm(desc, ctx->key, ctx->split_key_pad_len,
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ctx->split_key_len, CLASS_2 |
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KEY_DEST_MDHA_SPLIT | KEY_ENC);
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append_key_as_imm(desc, (void *)ctx->key +
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ctx->split_key_pad_len, ctx->enckeylen,
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ctx->enckeylen, CLASS_1 | KEY_DEST_CLASS_REG);
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} else {
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append_key(desc, ctx->key_dma, ctx->split_key_len, CLASS_2 |
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KEY_DEST_MDHA_SPLIT | KEY_ENC);
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append_key(desc, ctx->key_dma + ctx->split_key_pad_len,
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ctx->enckeylen, CLASS_1 | KEY_DEST_CLASS_REG);
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}
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}
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static void init_sh_desc_key_aead(u32 *desc, struct caam_ctx *ctx,
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int keys_fit_inline)
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{
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u32 *key_jump_cmd;
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init_sh_desc(desc, HDR_SHARE_WAIT);
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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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append_key_aead(desc, ctx, keys_fit_inline);
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set_jump_tgt_here(desc, key_jump_cmd);
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/* Propagate errors from shared to job descriptor */
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append_cmd(desc, SET_OK_PROP_ERRORS | CMD_LOAD);
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}
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static int aead_set_sh_desc(struct crypto_aead *aead)
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{
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struct aead_tfm *tfm = &aead->base.crt_aead;
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struct caam_ctx *ctx = crypto_aead_ctx(aead);
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struct device *jrdev = ctx->jrdev;
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bool keys_fit_inline = 0;
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u32 *key_jump_cmd, *jump_cmd;
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u32 geniv, moveiv;
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u32 *desc;
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if (!ctx->enckeylen || !ctx->authsize)
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return 0;
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/*
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* Job Descriptor and Shared Descriptors
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* must all fit into the 64-word Descriptor h/w Buffer
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*/
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if (DESC_AEAD_ENC_LEN + DESC_JOB_IO_LEN +
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ctx->split_key_pad_len + ctx->enckeylen <=
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CAAM_DESC_BYTES_MAX)
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keys_fit_inline = 1;
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/* aead_encrypt shared descriptor */
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desc = ctx->sh_desc_enc;
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init_sh_desc_key_aead(desc, ctx, keys_fit_inline);
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/* Class 2 operation */
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append_operation(desc, ctx->class2_alg_type |
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OP_ALG_AS_INITFINAL | OP_ALG_ENCRYPT);
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/* cryptlen = seqoutlen - authsize */
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append_math_sub_imm_u32(desc, REG3, SEQOUTLEN, IMM, ctx->authsize);
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/* assoclen + cryptlen = seqinlen - ivsize */
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append_math_sub_imm_u32(desc, REG2, SEQINLEN, IMM, tfm->ivsize);
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/* assoclen + cryptlen = (assoclen + cryptlen) - cryptlen */
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append_math_sub(desc, VARSEQINLEN, REG2, REG3, CAAM_CMD_SZ);
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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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KEY_VLF);
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aead_append_ld_iv(desc, tfm->ivsize);
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/* Class 1 operation */
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append_operation(desc, ctx->class1_alg_type |
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OP_ALG_AS_INITFINAL | OP_ALG_ENCRYPT);
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/* Read and write cryptlen 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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aead_append_src_dst(desc, FIFOLD_TYPE_MSG1OUT2);
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/* Write ICV */
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append_seq_store(desc, ctx->authsize, LDST_CLASS_2_CCB |
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LDST_SRCDST_BYTE_CONTEXT);
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ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc,
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desc_bytes(desc),
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DMA_TO_DEVICE);
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if (dma_mapping_error(jrdev, ctx->sh_desc_enc_dma)) {
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dev_err(jrdev, "unable to map shared descriptor\n");
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return -ENOMEM;
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}
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#ifdef DEBUG
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print_hex_dump(KERN_ERR, "aead enc shdesc@"xstr(__LINE__)": ",
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DUMP_PREFIX_ADDRESS, 16, 4, desc,
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desc_bytes(desc), 1);
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#endif
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/*
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* Job Descriptor and Shared Descriptors
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* must all fit into the 64-word Descriptor h/w Buffer
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*/
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if (DESC_AEAD_DEC_LEN + DESC_JOB_IO_LEN +
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ctx->split_key_pad_len + ctx->enckeylen <=
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CAAM_DESC_BYTES_MAX)
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keys_fit_inline = 1;
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desc = ctx->sh_desc_dec;
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/* aead_decrypt shared descriptor */
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init_sh_desc(desc, HDR_SHARE_WAIT);
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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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append_key_aead(desc, ctx, keys_fit_inline);
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/* Only propagate error immediately if shared */
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jump_cmd = append_jump(desc, JUMP_TEST_ALL);
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set_jump_tgt_here(desc, key_jump_cmd);
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append_cmd(desc, SET_OK_PROP_ERRORS | CMD_LOAD);
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set_jump_tgt_here(desc, jump_cmd);
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/* Class 2 operation */
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append_operation(desc, ctx->class2_alg_type |
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OP_ALG_AS_INITFINAL | OP_ALG_DECRYPT | OP_ALG_ICV_ON);
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/* assoclen + cryptlen = seqinlen - ivsize */
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append_math_sub_imm_u32(desc, REG3, SEQINLEN, IMM,
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ctx->authsize + tfm->ivsize)
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/* assoclen = (assoclen + cryptlen) - cryptlen */
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append_math_sub(desc, REG2, SEQOUTLEN, REG0, CAAM_CMD_SZ);
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append_math_sub(desc, VARSEQINLEN, REG3, REG2, CAAM_CMD_SZ);
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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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KEY_VLF);
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|
|
aead_append_ld_iv(desc, tfm->ivsize);
|
|
|
|
|
|
|
|
append_dec_op1(desc, ctx->class1_alg_type);
|
|
|
|
|
|
|
|
/* Read and write cryptlen bytes */
|
|
|
|
append_math_add(desc, VARSEQINLEN, ZERO, REG2, CAAM_CMD_SZ);
|
|
|
|
append_math_add(desc, VARSEQOUTLEN, ZERO, REG2, CAAM_CMD_SZ);
|
|
|
|
aead_append_src_dst(desc, FIFOLD_TYPE_MSG);
|
|
|
|
|
|
|
|
/* Load ICV */
|
|
|
|
append_seq_fifo_load(desc, ctx->authsize, FIFOLD_CLASS_CLASS2 |
|
|
|
|
FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV);
|
|
|
|
append_dec_shr_done(desc);
|
|
|
|
|
|
|
|
ctx->sh_desc_dec_dma = dma_map_single(jrdev, desc,
|
|
|
|
desc_bytes(desc),
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
if (dma_mapping_error(jrdev, ctx->sh_desc_dec_dma)) {
|
|
|
|
dev_err(jrdev, "unable to map shared descriptor\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "aead dec shdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc,
|
|
|
|
desc_bytes(desc), 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Job Descriptor and Shared Descriptors
|
|
|
|
* must all fit into the 64-word Descriptor h/w Buffer
|
|
|
|
*/
|
|
|
|
if (DESC_AEAD_GIVENC_LEN + DESC_JOB_IO_LEN +
|
|
|
|
ctx->split_key_pad_len + ctx->enckeylen <=
|
|
|
|
CAAM_DESC_BYTES_MAX)
|
|
|
|
keys_fit_inline = 1;
|
|
|
|
|
|
|
|
/* aead_givencrypt shared descriptor */
|
|
|
|
desc = ctx->sh_desc_givenc;
|
|
|
|
|
|
|
|
init_sh_desc_key_aead(desc, ctx, keys_fit_inline);
|
|
|
|
|
|
|
|
/* Generate IV */
|
|
|
|
geniv = NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DEST_DECO |
|
|
|
|
NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_LC1 |
|
|
|
|
NFIFOENTRY_PTYPE_RND | (tfm->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_SRC_INFIFO |
|
|
|
|
MOVE_DEST_CLASS1CTX | (tfm->ivsize << MOVE_LEN_SHIFT));
|
|
|
|
append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO);
|
|
|
|
|
|
|
|
/* Copy IV to class 1 context */
|
|
|
|
append_move(desc, MOVE_SRC_CLASS1CTX |
|
|
|
|
MOVE_DEST_OUTFIFO | (tfm->ivsize << MOVE_LEN_SHIFT));
|
|
|
|
|
|
|
|
/* Return to encryption */
|
|
|
|
append_operation(desc, ctx->class2_alg_type |
|
|
|
|
OP_ALG_AS_INITFINAL | OP_ALG_ENCRYPT);
|
|
|
|
|
|
|
|
/* ivsize + cryptlen = seqoutlen - authsize */
|
|
|
|
append_math_sub_imm_u32(desc, REG3, SEQOUTLEN, IMM, ctx->authsize);
|
|
|
|
|
|
|
|
/* assoclen = seqinlen - (ivsize + cryptlen) */
|
|
|
|
append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG3, CAAM_CMD_SZ);
|
|
|
|
|
|
|
|
/* read assoc before reading payload */
|
|
|
|
append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG |
|
|
|
|
KEY_VLF);
|
|
|
|
|
|
|
|
/* Copy iv from class 1 ctx to class 2 fifo*/
|
|
|
|
moveiv = NFIFOENTRY_STYPE_OFIFO | NFIFOENTRY_DEST_CLASS2 |
|
|
|
|
NFIFOENTRY_DTYPE_MSG | (tfm->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, tfm->ivsize, LDST_CLASS_2_CCB |
|
|
|
|
LDST_SRCDST_WORD_DATASZ_REG | LDST_IMM);
|
|
|
|
|
|
|
|
/* Class 1 operation */
|
|
|
|
append_operation(desc, ctx->class1_alg_type |
|
|
|
|
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, tfm->ivsize,
|
|
|
|
FIFOLD_CLASS_SKIP);
|
|
|
|
|
|
|
|
/* Will read cryptlen */
|
|
|
|
append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
|
|
|
|
aead_append_src_dst(desc, FIFOLD_TYPE_MSG1OUT2);
|
|
|
|
|
|
|
|
/* Write ICV */
|
|
|
|
append_seq_store(desc, ctx->authsize, LDST_CLASS_2_CCB |
|
|
|
|
LDST_SRCDST_BYTE_CONTEXT);
|
|
|
|
|
|
|
|
ctx->sh_desc_givenc_dma = dma_map_single(jrdev, desc,
|
|
|
|
desc_bytes(desc),
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
if (dma_mapping_error(jrdev, ctx->sh_desc_givenc_dma)) {
|
|
|
|
dev_err(jrdev, "unable to map shared descriptor\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "aead givenc shdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc,
|
|
|
|
desc_bytes(desc), 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
static int aead_setauthsize(struct crypto_aead *authenc,
|
2011-03-13 08:54:26 +00:00
|
|
|
unsigned int authsize)
|
|
|
|
{
|
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(authenc);
|
|
|
|
|
|
|
|
ctx->authsize = authsize;
|
2011-07-15 03:21:42 +00:00
|
|
|
aead_set_sh_desc(authenc);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct split_key_result {
|
|
|
|
struct completion completion;
|
|
|
|
int err;
|
|
|
|
};
|
|
|
|
|
|
|
|
static void split_key_done(struct device *dev, u32 *desc, u32 err,
|
|
|
|
void *context)
|
|
|
|
{
|
|
|
|
struct split_key_result *res = context;
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
dev_err(dev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
|
|
|
|
#endif
|
2011-07-15 03:21:42 +00:00
|
|
|
|
2011-03-13 08:54:26 +00:00
|
|
|
if (err) {
|
2011-05-02 23:29:17 +00:00
|
|
|
char tmp[CAAM_ERROR_STR_MAX];
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
dev_err(dev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err));
|
|
|
|
}
|
|
|
|
|
|
|
|
res->err = err;
|
|
|
|
|
|
|
|
complete(&res->completion);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
get a split ipad/opad key
|
|
|
|
|
|
|
|
Split key generation-----------------------------------------------
|
|
|
|
|
|
|
|
[00] 0xb0810008 jobdesc: stidx=1 share=never len=8
|
|
|
|
[01] 0x04000014 key: class2->keyreg len=20
|
|
|
|
@0xffe01000
|
|
|
|
[03] 0x84410014 operation: cls2-op sha1 hmac init dec
|
|
|
|
[04] 0x24940000 fifold: class2 msgdata-last2 len=0 imm
|
|
|
|
[05] 0xa4000001 jump: class2 local all ->1 [06]
|
|
|
|
[06] 0x64260028 fifostr: class2 mdsplit-jdk len=40
|
|
|
|
@0xffe04000
|
|
|
|
*/
|
|
|
|
static u32 gen_split_key(struct caam_ctx *ctx, const u8 *key_in, u32 authkeylen)
|
|
|
|
{
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
|
|
|
u32 *desc;
|
|
|
|
struct split_key_result result;
|
|
|
|
dma_addr_t dma_addr_in, dma_addr_out;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
desc = kmalloc(CAAM_CMD_SZ * 6 + CAAM_PTR_SZ * 2, GFP_KERNEL | GFP_DMA);
|
|
|
|
|
|
|
|
init_job_desc(desc, 0);
|
|
|
|
|
|
|
|
dma_addr_in = dma_map_single(jrdev, (void *)key_in, authkeylen,
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
if (dma_mapping_error(jrdev, dma_addr_in)) {
|
|
|
|
dev_err(jrdev, "unable to map key input memory\n");
|
|
|
|
kfree(desc);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
append_key(desc, dma_addr_in, authkeylen, CLASS_2 |
|
|
|
|
KEY_DEST_CLASS_REG);
|
|
|
|
|
|
|
|
/* Sets MDHA up into an HMAC-INIT */
|
|
|
|
append_operation(desc, ctx->alg_op | OP_ALG_DECRYPT |
|
|
|
|
OP_ALG_AS_INIT);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* do a FIFO_LOAD of zero, this will trigger the internal key expansion
|
|
|
|
into both pads inside MDHA
|
|
|
|
*/
|
|
|
|
append_fifo_load_as_imm(desc, NULL, 0, LDST_CLASS_2_CCB |
|
|
|
|
FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST2);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* FIFO_STORE with the explicit split-key content store
|
|
|
|
* (0x26 output type)
|
|
|
|
*/
|
|
|
|
dma_addr_out = dma_map_single(jrdev, ctx->key, ctx->split_key_pad_len,
|
|
|
|
DMA_FROM_DEVICE);
|
|
|
|
if (dma_mapping_error(jrdev, dma_addr_out)) {
|
|
|
|
dev_err(jrdev, "unable to map key output memory\n");
|
|
|
|
kfree(desc);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
append_fifo_store(desc, dma_addr_out, ctx->split_key_len,
|
|
|
|
LDST_CLASS_2_CCB | FIFOST_TYPE_SPLIT_KEK);
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "ctx.key@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, key_in, authkeylen, 1);
|
|
|
|
print_hex_dump(KERN_ERR, "jobdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
result.err = 0;
|
|
|
|
init_completion(&result.completion);
|
|
|
|
|
|
|
|
ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result);
|
|
|
|
if (!ret) {
|
|
|
|
/* in progress */
|
|
|
|
wait_for_completion_interruptible(&result.completion);
|
|
|
|
ret = result.err;
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "ctx.key@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, ctx->key,
|
|
|
|
ctx->split_key_pad_len, 1);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
dma_unmap_single(jrdev, dma_addr_out, ctx->split_key_pad_len,
|
|
|
|
DMA_FROM_DEVICE);
|
|
|
|
dma_unmap_single(jrdev, dma_addr_in, authkeylen, DMA_TO_DEVICE);
|
|
|
|
|
|
|
|
kfree(desc);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
static int aead_setkey(struct crypto_aead *aead,
|
2011-03-13 08:54:26 +00:00
|
|
|
const u8 *key, unsigned int keylen)
|
|
|
|
{
|
|
|
|
/* Sizes for MDHA pads (*not* keys): MD5, SHA1, 224, 256, 384, 512 */
|
|
|
|
static const u8 mdpadlen[] = { 16, 20, 32, 32, 64, 64 };
|
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
|
|
|
struct rtattr *rta = (void *)key;
|
|
|
|
struct crypto_authenc_key_param *param;
|
|
|
|
unsigned int authkeylen;
|
|
|
|
unsigned int enckeylen;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
param = RTA_DATA(rta);
|
|
|
|
enckeylen = be32_to_cpu(param->enckeylen);
|
|
|
|
|
|
|
|
key += RTA_ALIGN(rta->rta_len);
|
|
|
|
keylen -= RTA_ALIGN(rta->rta_len);
|
|
|
|
|
|
|
|
if (keylen < enckeylen)
|
|
|
|
goto badkey;
|
|
|
|
|
|
|
|
authkeylen = keylen - enckeylen;
|
|
|
|
|
|
|
|
if (keylen > CAAM_MAX_KEY_SIZE)
|
|
|
|
goto badkey;
|
|
|
|
|
|
|
|
/* Pick class 2 key length from algorithm submask */
|
|
|
|
ctx->split_key_len = mdpadlen[(ctx->alg_op & OP_ALG_ALGSEL_SUBMASK) >>
|
|
|
|
OP_ALG_ALGSEL_SHIFT] * 2;
|
|
|
|
ctx->split_key_pad_len = ALIGN(ctx->split_key_len, 16);
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
printk(KERN_ERR "keylen %d enckeylen %d authkeylen %d\n",
|
|
|
|
keylen, enckeylen, authkeylen);
|
|
|
|
printk(KERN_ERR "split_key_len %d split_key_pad_len %d\n",
|
|
|
|
ctx->split_key_len, ctx->split_key_pad_len);
|
|
|
|
print_hex_dump(KERN_ERR, "key in @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ret = gen_split_key(ctx, key, authkeylen);
|
|
|
|
if (ret) {
|
|
|
|
goto badkey;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* postpend encryption key to auth split key */
|
|
|
|
memcpy(ctx->key + ctx->split_key_pad_len, key + authkeylen, enckeylen);
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
ctx->key_dma = dma_map_single(jrdev, ctx->key, ctx->split_key_pad_len +
|
2011-03-13 08:54:26 +00:00
|
|
|
enckeylen, DMA_TO_DEVICE);
|
2011-07-15 03:21:41 +00:00
|
|
|
if (dma_mapping_error(jrdev, ctx->key_dma)) {
|
2011-03-13 08:54:26 +00:00
|
|
|
dev_err(jrdev, "unable to map key i/o memory\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "ctx.key@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, ctx->key,
|
|
|
|
ctx->split_key_pad_len + enckeylen, 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ctx->enckeylen = enckeylen;
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
ret = aead_set_sh_desc(aead);
|
2011-03-13 08:54:26 +00:00
|
|
|
if (ret) {
|
2011-07-15 03:21:41 +00:00
|
|
|
dma_unmap_single(jrdev, ctx->key_dma, ctx->split_key_pad_len +
|
2011-03-13 08:54:26 +00:00
|
|
|
enckeylen, DMA_TO_DEVICE);
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
badkey:
|
|
|
|
crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
|
|
|
|
const u8 *key, unsigned int keylen)
|
|
|
|
{
|
|
|
|
struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
|
|
|
|
struct ablkcipher_tfm *tfm = &ablkcipher->base.crt_ablkcipher;
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
|
|
|
int ret = 0;
|
|
|
|
u32 *key_jump_cmd, *jump_cmd;
|
|
|
|
u32 *desc;
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "key in @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
memcpy(ctx->key, key, keylen);
|
|
|
|
ctx->key_dma = dma_map_single(jrdev, ctx->key, keylen,
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
if (dma_mapping_error(jrdev, ctx->key_dma)) {
|
|
|
|
dev_err(jrdev, "unable to map key i/o memory\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
ctx->enckeylen = keylen;
|
|
|
|
|
|
|
|
/* ablkcipher_encrypt shared descriptor */
|
|
|
|
desc = ctx->sh_desc_enc;
|
|
|
|
init_sh_desc(desc, HDR_SHARE_WAIT);
|
|
|
|
/* 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, (void *)ctx->key, ctx->enckeylen,
|
|
|
|
ctx->enckeylen, CLASS_1 |
|
|
|
|
KEY_DEST_CLASS_REG);
|
|
|
|
|
|
|
|
set_jump_tgt_here(desc, key_jump_cmd);
|
|
|
|
|
|
|
|
/* Propagate errors from shared to job descriptor */
|
|
|
|
append_cmd(desc, SET_OK_PROP_ERRORS | CMD_LOAD);
|
|
|
|
|
|
|
|
/* Load iv */
|
|
|
|
append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_BYTE_CONTEXT |
|
|
|
|
LDST_CLASS_1_CCB | tfm->ivsize);
|
|
|
|
|
|
|
|
/* Load operation */
|
|
|
|
append_operation(desc, ctx->class1_alg_type |
|
|
|
|
OP_ALG_AS_INITFINAL | OP_ALG_ENCRYPT);
|
|
|
|
|
|
|
|
/* Perform operation */
|
|
|
|
ablkcipher_append_src_dst(desc);
|
|
|
|
|
|
|
|
ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc,
|
|
|
|
desc_bytes(desc),
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
if (dma_mapping_error(jrdev, ctx->sh_desc_enc_dma)) {
|
|
|
|
dev_err(jrdev, "unable to map shared descriptor\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "ablkcipher enc shdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc,
|
|
|
|
desc_bytes(desc), 1);
|
|
|
|
#endif
|
|
|
|
/* ablkcipher_decrypt shared descriptor */
|
|
|
|
desc = ctx->sh_desc_dec;
|
|
|
|
|
|
|
|
init_sh_desc(desc, HDR_SHARE_WAIT);
|
|
|
|
/* 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, (void *)ctx->key, ctx->enckeylen,
|
|
|
|
ctx->enckeylen, CLASS_1 |
|
|
|
|
KEY_DEST_CLASS_REG);
|
|
|
|
|
|
|
|
/* For aead, only propagate error immediately if shared */
|
|
|
|
jump_cmd = append_jump(desc, JUMP_TEST_ALL);
|
|
|
|
set_jump_tgt_here(desc, key_jump_cmd);
|
|
|
|
append_cmd(desc, SET_OK_PROP_ERRORS | CMD_LOAD);
|
|
|
|
set_jump_tgt_here(desc, jump_cmd);
|
|
|
|
|
|
|
|
/* load IV */
|
|
|
|
append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_BYTE_CONTEXT |
|
|
|
|
LDST_CLASS_1_CCB | tfm->ivsize);
|
|
|
|
|
|
|
|
/* Choose operation */
|
|
|
|
append_dec_op1(desc, ctx->class1_alg_type);
|
|
|
|
|
|
|
|
/* Perform operation */
|
|
|
|
ablkcipher_append_src_dst(desc);
|
|
|
|
|
|
|
|
/* Wait for key to load before allowing propagating error */
|
|
|
|
append_dec_shr_done(desc);
|
|
|
|
|
|
|
|
ctx->sh_desc_dec_dma = dma_map_single(jrdev, desc,
|
|
|
|
desc_bytes(desc),
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
if (dma_mapping_error(jrdev, ctx->sh_desc_enc_dma)) {
|
|
|
|
dev_err(jrdev, "unable to map shared descriptor\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "ablkcipher dec shdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, desc,
|
|
|
|
desc_bytes(desc), 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-03-13 08:54:26 +00:00
|
|
|
struct link_tbl_entry {
|
|
|
|
u64 ptr;
|
|
|
|
u32 len;
|
|
|
|
u8 reserved;
|
|
|
|
u8 buf_pool_id;
|
|
|
|
u16 offset;
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
2011-07-15 03:21:42 +00:00
|
|
|
* aead_edesc - s/w-extended aead descriptor
|
|
|
|
* @assoc_nents: number of segments in associated data (SPI+Seq) scatterlist
|
2011-03-13 08:54:26 +00:00
|
|
|
* @src_nents: number of segments in input scatterlist
|
|
|
|
* @dst_nents: number of segments in output scatterlist
|
2011-07-15 03:21:42 +00:00
|
|
|
* @iv_dma: dma address of iv for checking continuity and link table
|
2011-03-13 08:54:26 +00:00
|
|
|
* @desc: h/w descriptor (variable length; must not exceed MAX_CAAM_DESCSIZE)
|
|
|
|
* @link_tbl_bytes: length of dma mapped link_tbl space
|
|
|
|
* @link_tbl_dma: bus physical mapped address of h/w link table
|
|
|
|
* @hw_desc: the h/w job descriptor followed by any referenced link tables
|
|
|
|
*/
|
2011-07-15 03:21:41 +00:00
|
|
|
struct aead_edesc {
|
2011-03-13 08:54:26 +00:00
|
|
|
int assoc_nents;
|
|
|
|
int src_nents;
|
|
|
|
int dst_nents;
|
2011-07-15 03:21:42 +00:00
|
|
|
dma_addr_t iv_dma;
|
2011-03-13 08:54:26 +00:00
|
|
|
int link_tbl_bytes;
|
|
|
|
dma_addr_t link_tbl_dma;
|
|
|
|
struct link_tbl_entry *link_tbl;
|
|
|
|
u32 hw_desc[0];
|
|
|
|
};
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
/*
|
|
|
|
* ablkcipher_edesc - s/w-extended ablkcipher descriptor
|
|
|
|
* @src_nents: number of segments in input scatterlist
|
|
|
|
* @dst_nents: number of segments in output scatterlist
|
|
|
|
* @iv_dma: dma address of iv for checking continuity and link table
|
|
|
|
* @desc: h/w descriptor (variable length; must not exceed MAX_CAAM_DESCSIZE)
|
|
|
|
* @link_tbl_bytes: length of dma mapped link_tbl space
|
|
|
|
* @link_tbl_dma: bus physical mapped address of h/w link table
|
|
|
|
* @hw_desc: the h/w job descriptor followed by any referenced link tables
|
|
|
|
*/
|
|
|
|
struct ablkcipher_edesc {
|
|
|
|
int src_nents;
|
|
|
|
int dst_nents;
|
|
|
|
dma_addr_t iv_dma;
|
|
|
|
int link_tbl_bytes;
|
|
|
|
dma_addr_t link_tbl_dma;
|
|
|
|
struct link_tbl_entry *link_tbl;
|
|
|
|
u32 hw_desc[0];
|
|
|
|
};
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
static void caam_unmap(struct device *dev, struct scatterlist *src,
|
|
|
|
struct scatterlist *dst, int src_nents, int dst_nents,
|
|
|
|
dma_addr_t iv_dma, int ivsize, dma_addr_t link_tbl_dma,
|
|
|
|
int link_tbl_bytes)
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
2011-07-15 03:21:42 +00:00
|
|
|
if (unlikely(dst != src)) {
|
|
|
|
dma_unmap_sg(dev, src, src_nents, DMA_TO_DEVICE);
|
|
|
|
dma_unmap_sg(dev, dst, dst_nents, DMA_FROM_DEVICE);
|
2011-03-13 08:54:26 +00:00
|
|
|
} else {
|
2011-07-15 03:21:42 +00:00
|
|
|
dma_unmap_sg(dev, src, src_nents, DMA_BIDIRECTIONAL);
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
if (iv_dma)
|
|
|
|
dma_unmap_single(dev, iv_dma, ivsize, DMA_TO_DEVICE);
|
|
|
|
if (link_tbl_bytes)
|
|
|
|
dma_unmap_single(dev, link_tbl_dma, link_tbl_bytes,
|
2011-03-13 08:54:26 +00:00
|
|
|
DMA_TO_DEVICE);
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
static void aead_unmap(struct device *dev,
|
|
|
|
struct aead_edesc *edesc,
|
|
|
|
struct aead_request *req)
|
|
|
|
{
|
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
|
|
|
int ivsize = crypto_aead_ivsize(aead);
|
|
|
|
|
|
|
|
dma_unmap_sg(dev, req->assoc, edesc->assoc_nents, DMA_TO_DEVICE);
|
|
|
|
|
|
|
|
caam_unmap(dev, req->src, req->dst,
|
|
|
|
edesc->src_nents, edesc->dst_nents,
|
|
|
|
edesc->iv_dma, ivsize, edesc->link_tbl_dma,
|
|
|
|
edesc->link_tbl_bytes);
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
static void ablkcipher_unmap(struct device *dev,
|
|
|
|
struct ablkcipher_edesc *edesc,
|
|
|
|
struct ablkcipher_request *req)
|
|
|
|
{
|
|
|
|
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
|
|
|
|
int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
|
|
|
|
|
|
|
|
caam_unmap(dev, req->src, req->dst,
|
|
|
|
edesc->src_nents, edesc->dst_nents,
|
|
|
|
edesc->iv_dma, ivsize, edesc->link_tbl_dma,
|
|
|
|
edesc->link_tbl_bytes);
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
static void aead_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
|
2011-03-13 08:54:26 +00:00
|
|
|
void *context)
|
|
|
|
{
|
2011-07-15 03:21:41 +00:00
|
|
|
struct aead_request *req = context;
|
|
|
|
struct aead_edesc *edesc;
|
2011-03-13 08:54:26 +00:00
|
|
|
#ifdef DEBUG
|
2011-07-15 03:21:41 +00:00
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
2011-03-13 08:54:26 +00:00
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
2011-07-15 03:21:42 +00:00
|
|
|
int ivsize = crypto_aead_ivsize(aead);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
|
|
|
|
#endif
|
2011-07-15 03:21:42 +00:00
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
edesc = (struct aead_edesc *)((char *)desc -
|
|
|
|
offsetof(struct aead_edesc, hw_desc));
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
if (err) {
|
2011-05-02 23:29:17 +00:00
|
|
|
char tmp[CAAM_ERROR_STR_MAX];
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err));
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
aead_unmap(jrdev, edesc, req);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "assoc @"xstr(__LINE__)": ",
|
2011-07-15 03:21:41 +00:00
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->assoc),
|
|
|
|
req->assoclen , 1);
|
2011-03-13 08:54:26 +00:00
|
|
|
print_hex_dump(KERN_ERR, "dstiv @"xstr(__LINE__)": ",
|
2011-07-15 03:21:41 +00:00
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->src) - ivsize,
|
2011-03-13 08:54:26 +00:00
|
|
|
edesc->src_nents ? 100 : ivsize, 1);
|
|
|
|
print_hex_dump(KERN_ERR, "dst @"xstr(__LINE__)": ",
|
2011-07-15 03:21:41 +00:00
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->src),
|
|
|
|
edesc->src_nents ? 100 : req->cryptlen +
|
2011-03-13 08:54:26 +00:00
|
|
|
ctx->authsize + 4, 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
kfree(edesc);
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
aead_request_complete(req, err);
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
static void aead_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
|
2011-03-13 08:54:26 +00:00
|
|
|
void *context)
|
|
|
|
{
|
2011-07-15 03:21:41 +00:00
|
|
|
struct aead_request *req = context;
|
|
|
|
struct aead_edesc *edesc;
|
2011-03-13 08:54:26 +00:00
|
|
|
#ifdef DEBUG
|
2011-07-15 03:21:41 +00:00
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
2011-03-13 08:54:26 +00:00
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
2011-07-15 03:21:42 +00:00
|
|
|
int ivsize = crypto_aead_ivsize(aead);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
|
|
|
|
#endif
|
2011-07-15 03:21:42 +00:00
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
edesc = (struct aead_edesc *)((char *)desc -
|
|
|
|
offsetof(struct aead_edesc, hw_desc));
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "dstiv @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, req->iv,
|
|
|
|
ivsize, 1);
|
|
|
|
print_hex_dump(KERN_ERR, "dst @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->dst),
|
|
|
|
req->cryptlen, 1);
|
|
|
|
#endif
|
|
|
|
|
2011-03-13 08:54:26 +00:00
|
|
|
if (err) {
|
2011-05-02 23:29:17 +00:00
|
|
|
char tmp[CAAM_ERROR_STR_MAX];
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err));
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
aead_unmap(jrdev, edesc, req);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* verify hw auth check passed else return -EBADMSG
|
|
|
|
*/
|
|
|
|
if ((err & JRSTA_CCBERR_ERRID_MASK) == JRSTA_CCBERR_ERRID_ICVCHK)
|
|
|
|
err = -EBADMSG;
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "iphdrout@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4,
|
2011-07-15 03:21:41 +00:00
|
|
|
((char *)sg_virt(req->assoc) - sizeof(struct iphdr)),
|
|
|
|
sizeof(struct iphdr) + req->assoclen +
|
|
|
|
((req->cryptlen > 1500) ? 1500 : req->cryptlen) +
|
2011-03-13 08:54:26 +00:00
|
|
|
ctx->authsize + 36, 1);
|
|
|
|
if (!err && edesc->link_tbl_bytes) {
|
2011-07-15 03:21:41 +00:00
|
|
|
struct scatterlist *sg = sg_last(req->src, edesc->src_nents);
|
2011-03-13 08:54:26 +00:00
|
|
|
print_hex_dump(KERN_ERR, "sglastout@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(sg),
|
|
|
|
sg->length + ctx->authsize + 16, 1);
|
|
|
|
}
|
|
|
|
#endif
|
2011-07-15 03:21:42 +00:00
|
|
|
|
2011-03-13 08:54:26 +00:00
|
|
|
kfree(edesc);
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
aead_request_complete(req, err);
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
static void ablkcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
|
|
|
|
void *context)
|
|
|
|
{
|
|
|
|
struct ablkcipher_request *req = context;
|
|
|
|
struct ablkcipher_edesc *edesc;
|
|
|
|
#ifdef DEBUG
|
|
|
|
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
|
|
|
|
int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
|
|
|
|
|
|
|
|
dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
edesc = (struct ablkcipher_edesc *)((char *)desc -
|
|
|
|
offsetof(struct ablkcipher_edesc, hw_desc));
|
|
|
|
|
|
|
|
if (err) {
|
|
|
|
char tmp[CAAM_ERROR_STR_MAX];
|
|
|
|
|
|
|
|
dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err));
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "dstiv @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, req->info,
|
|
|
|
edesc->src_nents > 1 ? 100 : ivsize, 1);
|
|
|
|
print_hex_dump(KERN_ERR, "dst @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->src),
|
|
|
|
edesc->dst_nents > 1 ? 100 : req->nbytes, 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ablkcipher_unmap(jrdev, edesc, req);
|
|
|
|
kfree(edesc);
|
|
|
|
|
|
|
|
ablkcipher_request_complete(req, err);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ablkcipher_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
|
|
|
|
void *context)
|
|
|
|
{
|
|
|
|
struct ablkcipher_request *req = context;
|
|
|
|
struct ablkcipher_edesc *edesc;
|
|
|
|
#ifdef DEBUG
|
|
|
|
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
|
|
|
|
int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
|
|
|
|
|
|
|
|
dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
edesc = (struct ablkcipher_edesc *)((char *)desc -
|
|
|
|
offsetof(struct ablkcipher_edesc, hw_desc));
|
|
|
|
if (err) {
|
|
|
|
char tmp[CAAM_ERROR_STR_MAX];
|
|
|
|
|
|
|
|
dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err));
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "dstiv @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, req->info,
|
|
|
|
ivsize, 1);
|
|
|
|
print_hex_dump(KERN_ERR, "dst @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->src),
|
|
|
|
edesc->dst_nents > 1 ? 100 : req->nbytes, 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ablkcipher_unmap(jrdev, edesc, req);
|
|
|
|
kfree(edesc);
|
|
|
|
|
|
|
|
ablkcipher_request_complete(req, err);
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
static void sg_to_link_tbl_one(struct link_tbl_entry *link_tbl_ptr,
|
|
|
|
dma_addr_t dma, u32 len, u32 offset)
|
|
|
|
{
|
|
|
|
link_tbl_ptr->ptr = dma;
|
|
|
|
link_tbl_ptr->len = len;
|
|
|
|
link_tbl_ptr->reserved = 0;
|
|
|
|
link_tbl_ptr->buf_pool_id = 0;
|
|
|
|
link_tbl_ptr->offset = offset;
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "link_tbl_ptr@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, link_tbl_ptr,
|
|
|
|
sizeof(struct link_tbl_entry), 1);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2011-03-13 08:54:26 +00:00
|
|
|
/*
|
|
|
|
* convert scatterlist to h/w link table format
|
2011-07-15 03:21:42 +00:00
|
|
|
* but does not have final bit; instead, returns last entry
|
2011-03-13 08:54:26 +00:00
|
|
|
*/
|
2011-07-15 03:21:42 +00:00
|
|
|
static struct link_tbl_entry *sg_to_link_tbl(struct scatterlist *sg,
|
|
|
|
int sg_count, struct link_tbl_entry
|
|
|
|
*link_tbl_ptr, u32 offset)
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
|
|
|
while (sg_count) {
|
2011-07-15 03:21:42 +00:00
|
|
|
sg_to_link_tbl_one(link_tbl_ptr, sg_dma_address(sg),
|
|
|
|
sg_dma_len(sg), offset);
|
2011-03-13 08:54:26 +00:00
|
|
|
link_tbl_ptr++;
|
|
|
|
sg = sg_next(sg);
|
|
|
|
sg_count--;
|
|
|
|
}
|
2011-07-15 03:21:42 +00:00
|
|
|
return link_tbl_ptr - 1;
|
|
|
|
}
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
/*
|
|
|
|
* convert scatterlist to h/w link table format
|
|
|
|
* scatterlist must have been previously dma mapped
|
|
|
|
*/
|
|
|
|
static void sg_to_link_tbl_last(struct scatterlist *sg, int sg_count,
|
|
|
|
struct link_tbl_entry *link_tbl_ptr, u32 offset)
|
|
|
|
{
|
|
|
|
link_tbl_ptr = sg_to_link_tbl(sg, sg_count, link_tbl_ptr, offset);
|
2011-03-13 08:54:26 +00:00
|
|
|
link_tbl_ptr->len |= 0x40000000;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2011-07-15 03:21:42 +00:00
|
|
|
* Fill in aead job descriptor
|
2011-03-13 08:54:26 +00:00
|
|
|
*/
|
2011-07-15 03:21:42 +00:00
|
|
|
static void init_aead_job(u32 *sh_desc, dma_addr_t ptr,
|
|
|
|
struct aead_edesc *edesc,
|
|
|
|
struct aead_request *req,
|
|
|
|
bool all_contig, bool encrypt)
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
2011-07-15 03:21:41 +00:00
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
2011-03-13 08:54:26 +00:00
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
|
|
|
int ivsize = crypto_aead_ivsize(aead);
|
|
|
|
int authsize = ctx->authsize;
|
2011-07-15 03:21:42 +00:00
|
|
|
u32 *desc = edesc->hw_desc;
|
|
|
|
u32 out_options = 0, in_options;
|
|
|
|
dma_addr_t dst_dma, src_dma;
|
|
|
|
int len, link_tbl_index = 0;
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
#ifdef DEBUG
|
2011-03-13 08:54:26 +00:00
|
|
|
debug("assoclen %d cryptlen %d authsize %d\n",
|
2011-07-15 03:21:41 +00:00
|
|
|
req->assoclen, req->cryptlen, authsize);
|
2011-03-13 08:54:26 +00:00
|
|
|
print_hex_dump(KERN_ERR, "assoc @"xstr(__LINE__)": ",
|
2011-07-15 03:21:41 +00:00
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->assoc),
|
|
|
|
req->assoclen , 1);
|
2011-03-13 08:54:26 +00:00
|
|
|
print_hex_dump(KERN_ERR, "presciv@"xstr(__LINE__)": ",
|
2011-07-15 03:21:42 +00:00
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, req->iv,
|
2011-03-13 08:54:26 +00:00
|
|
|
edesc->src_nents ? 100 : ivsize, 1);
|
|
|
|
print_hex_dump(KERN_ERR, "src @"xstr(__LINE__)": ",
|
2011-07-15 03:21:41 +00:00
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->src),
|
2011-07-15 03:21:42 +00:00
|
|
|
edesc->src_nents ? 100 : req->cryptlen, 1);
|
2011-03-13 08:54:26 +00:00
|
|
|
print_hex_dump(KERN_ERR, "shrdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sh_desc,
|
|
|
|
desc_bytes(sh_desc), 1);
|
|
|
|
#endif
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
len = desc_len(sh_desc);
|
|
|
|
init_job_desc_shared(desc, ptr, len, HDR_SHARE_DEFER | HDR_REVERSE);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
if (all_contig) {
|
|
|
|
src_dma = sg_dma_address(req->assoc);
|
|
|
|
in_options = 0;
|
2011-03-13 08:54:26 +00:00
|
|
|
} else {
|
2011-07-15 03:21:42 +00:00
|
|
|
src_dma = edesc->link_tbl_dma;
|
|
|
|
link_tbl_index += (edesc->assoc_nents ? : 1) + 1 +
|
|
|
|
(edesc->src_nents ? : 1);
|
|
|
|
in_options = LDST_SGF;
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
2011-07-15 03:21:42 +00:00
|
|
|
if (encrypt)
|
|
|
|
append_seq_in_ptr(desc, src_dma, req->assoclen + ivsize +
|
|
|
|
req->cryptlen - authsize, in_options);
|
|
|
|
else
|
|
|
|
append_seq_in_ptr(desc, src_dma, req->assoclen + ivsize +
|
|
|
|
req->cryptlen, in_options);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
if (likely(req->src == req->dst)) {
|
|
|
|
if (all_contig) {
|
|
|
|
dst_dma = sg_dma_address(req->src);
|
|
|
|
} else {
|
|
|
|
dst_dma = src_dma + sizeof(struct link_tbl_entry) *
|
|
|
|
((edesc->assoc_nents ? : 1) + 1);
|
|
|
|
out_options = LDST_SGF;
|
|
|
|
}
|
2011-03-13 08:54:26 +00:00
|
|
|
} else {
|
|
|
|
if (!edesc->dst_nents) {
|
2011-07-15 03:21:41 +00:00
|
|
|
dst_dma = sg_dma_address(req->dst);
|
2011-03-13 08:54:26 +00:00
|
|
|
} else {
|
2011-07-15 03:21:42 +00:00
|
|
|
dst_dma = edesc->link_tbl_dma +
|
|
|
|
link_tbl_index *
|
2011-03-13 08:54:26 +00:00
|
|
|
sizeof(struct link_tbl_entry);
|
2011-07-15 03:21:42 +00:00
|
|
|
out_options = LDST_SGF;
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
if (encrypt)
|
2011-07-15 03:21:42 +00:00
|
|
|
append_seq_out_ptr(desc, dst_dma, req->cryptlen, out_options);
|
2011-03-13 08:54:26 +00:00
|
|
|
else
|
2011-07-15 03:21:42 +00:00
|
|
|
append_seq_out_ptr(desc, dst_dma, req->cryptlen - authsize,
|
|
|
|
out_options);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Fill in aead givencrypt job descriptor
|
|
|
|
*/
|
|
|
|
static void init_aead_giv_job(u32 *sh_desc, dma_addr_t ptr,
|
|
|
|
struct aead_edesc *edesc,
|
|
|
|
struct aead_request *req,
|
|
|
|
int contig)
|
|
|
|
{
|
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
|
|
|
int ivsize = crypto_aead_ivsize(aead);
|
|
|
|
int authsize = ctx->authsize;
|
|
|
|
u32 *desc = edesc->hw_desc;
|
|
|
|
u32 out_options = 0, in_options;
|
|
|
|
dma_addr_t dst_dma, src_dma;
|
|
|
|
int len, link_tbl_index = 0;
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
#ifdef DEBUG
|
2011-07-15 03:21:42 +00:00
|
|
|
debug("assoclen %d cryptlen %d authsize %d\n",
|
|
|
|
req->assoclen, req->cryptlen, authsize);
|
|
|
|
print_hex_dump(KERN_ERR, "assoc @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->assoc),
|
|
|
|
req->assoclen , 1);
|
|
|
|
print_hex_dump(KERN_ERR, "presciv@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, req->iv, ivsize, 1);
|
|
|
|
print_hex_dump(KERN_ERR, "src @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->src),
|
|
|
|
edesc->src_nents > 1 ? 100 : req->cryptlen, 1);
|
|
|
|
print_hex_dump(KERN_ERR, "shrdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sh_desc,
|
|
|
|
desc_bytes(sh_desc), 1);
|
2011-03-13 08:54:26 +00:00
|
|
|
#endif
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
len = desc_len(sh_desc);
|
|
|
|
init_job_desc_shared(desc, ptr, len, HDR_SHARE_DEFER | HDR_REVERSE);
|
|
|
|
|
|
|
|
if (contig & GIV_SRC_CONTIG) {
|
|
|
|
src_dma = sg_dma_address(req->assoc);
|
|
|
|
in_options = 0;
|
|
|
|
} else {
|
|
|
|
src_dma = edesc->link_tbl_dma;
|
|
|
|
link_tbl_index += edesc->assoc_nents + 1 + edesc->src_nents;
|
|
|
|
in_options = LDST_SGF;
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
2011-07-15 03:21:42 +00:00
|
|
|
append_seq_in_ptr(desc, src_dma, req->assoclen + ivsize +
|
|
|
|
req->cryptlen - authsize, in_options);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
if (contig & GIV_DST_CONTIG) {
|
|
|
|
dst_dma = edesc->iv_dma;
|
|
|
|
} else {
|
|
|
|
if (likely(req->src == req->dst)) {
|
|
|
|
dst_dma = src_dma + sizeof(struct link_tbl_entry) *
|
|
|
|
edesc->assoc_nents;
|
|
|
|
out_options = LDST_SGF;
|
|
|
|
} else {
|
|
|
|
dst_dma = edesc->link_tbl_dma +
|
|
|
|
link_tbl_index *
|
|
|
|
sizeof(struct link_tbl_entry);
|
|
|
|
out_options = LDST_SGF;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
append_seq_out_ptr(desc, dst_dma, ivsize + req->cryptlen, out_options);
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
/*
|
|
|
|
* Fill in ablkcipher job descriptor
|
|
|
|
*/
|
|
|
|
static void init_ablkcipher_job(u32 *sh_desc, dma_addr_t ptr,
|
|
|
|
struct ablkcipher_edesc *edesc,
|
|
|
|
struct ablkcipher_request *req,
|
|
|
|
bool iv_contig)
|
|
|
|
{
|
|
|
|
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
|
|
|
|
int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
|
|
|
|
u32 *desc = edesc->hw_desc;
|
|
|
|
u32 out_options = 0, in_options;
|
|
|
|
dma_addr_t dst_dma, src_dma;
|
|
|
|
int len, link_tbl_index = 0;
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "presciv@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, req->info,
|
|
|
|
ivsize, 1);
|
|
|
|
print_hex_dump(KERN_ERR, "src @"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->src),
|
|
|
|
edesc->src_nents ? 100 : req->nbytes, 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
len = desc_len(sh_desc);
|
|
|
|
init_job_desc_shared(desc, ptr, len, HDR_SHARE_DEFER | HDR_REVERSE);
|
|
|
|
|
|
|
|
if (iv_contig) {
|
|
|
|
src_dma = edesc->iv_dma;
|
|
|
|
in_options = 0;
|
|
|
|
} else {
|
|
|
|
src_dma = edesc->link_tbl_dma;
|
|
|
|
link_tbl_index += (iv_contig ? 0 : 1) + edesc->src_nents;
|
|
|
|
in_options = LDST_SGF;
|
|
|
|
}
|
|
|
|
append_seq_in_ptr(desc, src_dma, req->nbytes + ivsize, in_options);
|
|
|
|
|
|
|
|
if (likely(req->src == req->dst)) {
|
|
|
|
if (!edesc->src_nents && iv_contig) {
|
|
|
|
dst_dma = sg_dma_address(req->src);
|
|
|
|
} else {
|
|
|
|
dst_dma = edesc->link_tbl_dma +
|
|
|
|
sizeof(struct link_tbl_entry);
|
|
|
|
out_options = LDST_SGF;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
if (!edesc->dst_nents) {
|
|
|
|
dst_dma = sg_dma_address(req->dst);
|
|
|
|
} else {
|
|
|
|
dst_dma = edesc->link_tbl_dma +
|
|
|
|
link_tbl_index * sizeof(struct link_tbl_entry);
|
|
|
|
out_options = LDST_SGF;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
append_seq_out_ptr(desc, dst_dma, req->nbytes, out_options);
|
|
|
|
}
|
|
|
|
|
2011-03-13 08:54:26 +00:00
|
|
|
/*
|
|
|
|
* derive number of elements in scatterlist
|
|
|
|
*/
|
2011-07-15 03:21:42 +00:00
|
|
|
static int sg_count(struct scatterlist *sg_list, int nbytes)
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
|
|
|
struct scatterlist *sg = sg_list;
|
|
|
|
int sg_nents = 0;
|
|
|
|
|
|
|
|
while (nbytes > 0) {
|
|
|
|
sg_nents++;
|
|
|
|
nbytes -= sg->length;
|
|
|
|
if (!sg_is_last(sg) && (sg + 1)->length == 0)
|
2011-07-15 03:21:42 +00:00
|
|
|
BUG(); /* Not support chaining */
|
2011-03-13 08:54:26 +00:00
|
|
|
sg = scatterwalk_sg_next(sg);
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
if (likely(sg_nents == 1))
|
|
|
|
return 0;
|
|
|
|
|
2011-03-13 08:54:26 +00:00
|
|
|
return sg_nents;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2011-07-15 03:21:42 +00:00
|
|
|
* allocate and map the aead extended descriptor
|
2011-03-13 08:54:26 +00:00
|
|
|
*/
|
2011-07-15 03:21:41 +00:00
|
|
|
static struct aead_edesc *aead_edesc_alloc(struct aead_request *req,
|
2011-07-15 03:21:42 +00:00
|
|
|
int desc_bytes, bool *all_contig_ptr)
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
2011-07-15 03:21:41 +00:00
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
2011-03-13 08:54:26 +00:00
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
2011-07-15 03:21:42 +00:00
|
|
|
gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
|
|
|
|
CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
|
|
|
|
int assoc_nents, src_nents, dst_nents = 0;
|
2011-07-15 03:21:41 +00:00
|
|
|
struct aead_edesc *edesc;
|
2011-07-15 03:21:42 +00:00
|
|
|
dma_addr_t iv_dma = 0;
|
|
|
|
int sgc;
|
|
|
|
bool all_contig = true;
|
|
|
|
int ivsize = crypto_aead_ivsize(aead);
|
|
|
|
int link_tbl_index, link_tbl_len = 0, link_tbl_bytes;
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
assoc_nents = sg_count(req->assoc, req->assoclen);
|
|
|
|
src_nents = sg_count(req->src, req->cryptlen);
|
|
|
|
|
|
|
|
if (unlikely(req->dst != req->src))
|
|
|
|
dst_nents = sg_count(req->dst, req->cryptlen);
|
|
|
|
|
|
|
|
sgc = dma_map_sg(jrdev, req->assoc, assoc_nents ? : 1,
|
|
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
if (likely(req->src == req->dst)) {
|
|
|
|
sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1,
|
|
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
} else {
|
|
|
|
sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1,
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
sgc = dma_map_sg(jrdev, req->dst, dst_nents ? : 1,
|
|
|
|
DMA_FROM_DEVICE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check if data are contiguous */
|
|
|
|
iv_dma = dma_map_single(jrdev, req->iv, ivsize, DMA_TO_DEVICE);
|
|
|
|
if (assoc_nents || sg_dma_address(req->assoc) + req->assoclen !=
|
|
|
|
iv_dma || src_nents || iv_dma + ivsize !=
|
|
|
|
sg_dma_address(req->src)) {
|
|
|
|
all_contig = false;
|
|
|
|
assoc_nents = assoc_nents ? : 1;
|
|
|
|
src_nents = src_nents ? : 1;
|
|
|
|
link_tbl_len = assoc_nents + 1 + src_nents;
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
2011-07-15 03:21:42 +00:00
|
|
|
link_tbl_len += dst_nents;
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
link_tbl_bytes = link_tbl_len * sizeof(struct link_tbl_entry);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
/* allocate space for base edesc and hw desc commands, link tables */
|
2011-07-15 03:21:41 +00:00
|
|
|
edesc = kmalloc(sizeof(struct aead_edesc) + desc_bytes +
|
2011-03-13 08:54:26 +00:00
|
|
|
link_tbl_bytes, GFP_DMA | flags);
|
|
|
|
if (!edesc) {
|
|
|
|
dev_err(jrdev, "could not allocate extended descriptor\n");
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
edesc->assoc_nents = assoc_nents;
|
|
|
|
edesc->src_nents = src_nents;
|
|
|
|
edesc->dst_nents = dst_nents;
|
2011-07-15 03:21:42 +00:00
|
|
|
edesc->iv_dma = iv_dma;
|
|
|
|
edesc->link_tbl_bytes = link_tbl_bytes;
|
2011-07-15 03:21:41 +00:00
|
|
|
edesc->link_tbl = (void *)edesc + sizeof(struct aead_edesc) +
|
2011-03-13 08:54:26 +00:00
|
|
|
desc_bytes;
|
|
|
|
edesc->link_tbl_dma = dma_map_single(jrdev, edesc->link_tbl,
|
|
|
|
link_tbl_bytes, DMA_TO_DEVICE);
|
2011-07-15 03:21:42 +00:00
|
|
|
*all_contig_ptr = all_contig;
|
|
|
|
|
|
|
|
link_tbl_index = 0;
|
|
|
|
if (!all_contig) {
|
|
|
|
sg_to_link_tbl(req->assoc,
|
|
|
|
(assoc_nents ? : 1),
|
|
|
|
edesc->link_tbl +
|
|
|
|
link_tbl_index, 0);
|
|
|
|
link_tbl_index += assoc_nents ? : 1;
|
|
|
|
sg_to_link_tbl_one(edesc->link_tbl + link_tbl_index,
|
|
|
|
iv_dma, ivsize, 0);
|
|
|
|
link_tbl_index += 1;
|
|
|
|
sg_to_link_tbl_last(req->src,
|
|
|
|
(src_nents ? : 1),
|
|
|
|
edesc->link_tbl +
|
|
|
|
link_tbl_index, 0);
|
|
|
|
link_tbl_index += src_nents ? : 1;
|
|
|
|
}
|
|
|
|
if (dst_nents) {
|
|
|
|
sg_to_link_tbl_last(req->dst, dst_nents,
|
|
|
|
edesc->link_tbl + link_tbl_index, 0);
|
|
|
|
}
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
return edesc;
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
static int aead_encrypt(struct aead_request *req)
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
2011-07-15 03:21:41 +00:00
|
|
|
struct aead_edesc *edesc;
|
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
2011-03-13 08:54:26 +00:00
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
2011-07-15 03:21:42 +00:00
|
|
|
bool all_contig;
|
2011-03-13 08:54:26 +00:00
|
|
|
u32 *desc;
|
2011-07-15 03:21:42 +00:00
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
req->cryptlen += ctx->authsize;
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
/* allocate extended descriptor */
|
2011-07-15 03:21:42 +00:00
|
|
|
edesc = aead_edesc_alloc(req, DESC_JOB_IO_LEN *
|
|
|
|
CAAM_CMD_SZ, &all_contig);
|
2011-03-13 08:54:26 +00:00
|
|
|
if (IS_ERR(edesc))
|
|
|
|
return PTR_ERR(edesc);
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
/* Create and submit job descriptor */
|
|
|
|
init_aead_job(ctx->sh_desc_enc, ctx->sh_desc_enc_dma, edesc, req,
|
|
|
|
all_contig, true);
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "aead jobdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
|
|
|
|
desc_bytes(edesc->hw_desc), 1);
|
|
|
|
#endif
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
desc = edesc->hw_desc;
|
|
|
|
ret = caam_jr_enqueue(jrdev, desc, aead_encrypt_done, req);
|
|
|
|
if (!ret) {
|
|
|
|
ret = -EINPROGRESS;
|
|
|
|
} else {
|
|
|
|
aead_unmap(jrdev, edesc, req);
|
|
|
|
kfree(edesc);
|
|
|
|
}
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
return ret;
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
static int aead_decrypt(struct aead_request *req)
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
2011-07-15 03:21:42 +00:00
|
|
|
struct aead_edesc *edesc;
|
2011-03-13 08:54:26 +00:00
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
2011-07-15 03:21:42 +00:00
|
|
|
bool all_contig;
|
2011-03-13 08:54:26 +00:00
|
|
|
u32 *desc;
|
2011-07-15 03:21:42 +00:00
|
|
|
int ret = 0;
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
/* allocate extended descriptor */
|
2011-07-15 03:21:42 +00:00
|
|
|
edesc = aead_edesc_alloc(req, DESC_JOB_IO_LEN *
|
|
|
|
CAAM_CMD_SZ, &all_contig);
|
2011-03-13 08:54:26 +00:00
|
|
|
if (IS_ERR(edesc))
|
|
|
|
return PTR_ERR(edesc);
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "dec src@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->src),
|
|
|
|
req->cryptlen, 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Create and submit job descriptor*/
|
|
|
|
init_aead_job(ctx->sh_desc_dec,
|
|
|
|
ctx->sh_desc_dec_dma, edesc, req, all_contig, false);
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "aead jobdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
|
|
|
|
desc_bytes(edesc->hw_desc), 1);
|
|
|
|
#endif
|
|
|
|
|
2011-03-13 08:54:26 +00:00
|
|
|
desc = edesc->hw_desc;
|
2011-07-15 03:21:42 +00:00
|
|
|
ret = caam_jr_enqueue(jrdev, desc, aead_decrypt_done, req);
|
|
|
|
if (!ret) {
|
|
|
|
ret = -EINPROGRESS;
|
|
|
|
} else {
|
|
|
|
aead_unmap(jrdev, edesc, req);
|
|
|
|
kfree(edesc);
|
|
|
|
}
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
return ret;
|
|
|
|
}
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
/*
|
|
|
|
* allocate and map the aead extended descriptor for aead givencrypt
|
|
|
|
*/
|
|
|
|
static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request
|
|
|
|
*greq, int desc_bytes,
|
|
|
|
u32 *contig_ptr)
|
|
|
|
{
|
|
|
|
struct aead_request *req = &greq->areq;
|
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
|
|
|
gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
|
|
|
|
CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
|
|
|
|
int assoc_nents, src_nents, dst_nents = 0;
|
|
|
|
struct aead_edesc *edesc;
|
|
|
|
dma_addr_t iv_dma = 0;
|
|
|
|
int sgc;
|
|
|
|
u32 contig = GIV_SRC_CONTIG | GIV_DST_CONTIG;
|
|
|
|
int ivsize = crypto_aead_ivsize(aead);
|
|
|
|
int link_tbl_index, link_tbl_len = 0, link_tbl_bytes;
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
assoc_nents = sg_count(req->assoc, req->assoclen);
|
|
|
|
src_nents = sg_count(req->src, req->cryptlen);
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
if (unlikely(req->dst != req->src))
|
|
|
|
dst_nents = sg_count(req->dst, req->cryptlen);
|
|
|
|
|
|
|
|
sgc = dma_map_sg(jrdev, req->assoc, assoc_nents ? : 1,
|
|
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
if (likely(req->src == req->dst)) {
|
|
|
|
sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1,
|
|
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
} else {
|
|
|
|
sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1,
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
sgc = dma_map_sg(jrdev, req->dst, dst_nents ? : 1,
|
|
|
|
DMA_FROM_DEVICE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check if data are contiguous */
|
|
|
|
iv_dma = dma_map_single(jrdev, greq->giv, ivsize, DMA_TO_DEVICE);
|
|
|
|
if (assoc_nents || sg_dma_address(req->assoc) + req->assoclen !=
|
|
|
|
iv_dma || src_nents || iv_dma + ivsize != sg_dma_address(req->src))
|
|
|
|
contig &= ~GIV_SRC_CONTIG;
|
|
|
|
if (dst_nents || iv_dma + ivsize != sg_dma_address(req->dst))
|
|
|
|
contig &= ~GIV_DST_CONTIG;
|
|
|
|
if (unlikely(req->src != req->dst)) {
|
|
|
|
dst_nents = dst_nents ? : 1;
|
|
|
|
link_tbl_len += 1;
|
|
|
|
}
|
|
|
|
if (!(contig & GIV_SRC_CONTIG)) {
|
|
|
|
assoc_nents = assoc_nents ? : 1;
|
|
|
|
src_nents = src_nents ? : 1;
|
|
|
|
link_tbl_len += assoc_nents + 1 + src_nents;
|
|
|
|
if (likely(req->src == req->dst))
|
|
|
|
contig &= ~GIV_DST_CONTIG;
|
|
|
|
}
|
|
|
|
link_tbl_len += dst_nents;
|
|
|
|
|
|
|
|
link_tbl_bytes = link_tbl_len * sizeof(struct link_tbl_entry);
|
|
|
|
|
|
|
|
/* allocate space for base edesc and hw desc commands, link tables */
|
|
|
|
edesc = kmalloc(sizeof(struct aead_edesc) + desc_bytes +
|
|
|
|
link_tbl_bytes, GFP_DMA | flags);
|
|
|
|
if (!edesc) {
|
|
|
|
dev_err(jrdev, "could not allocate extended descriptor\n");
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
edesc->assoc_nents = assoc_nents;
|
|
|
|
edesc->src_nents = src_nents;
|
|
|
|
edesc->dst_nents = dst_nents;
|
|
|
|
edesc->iv_dma = iv_dma;
|
|
|
|
edesc->link_tbl_bytes = link_tbl_bytes;
|
|
|
|
edesc->link_tbl = (void *)edesc + sizeof(struct aead_edesc) +
|
|
|
|
desc_bytes;
|
|
|
|
edesc->link_tbl_dma = dma_map_single(jrdev, edesc->link_tbl,
|
|
|
|
link_tbl_bytes, DMA_TO_DEVICE);
|
|
|
|
*contig_ptr = contig;
|
|
|
|
|
|
|
|
link_tbl_index = 0;
|
|
|
|
if (!(contig & GIV_SRC_CONTIG)) {
|
|
|
|
sg_to_link_tbl(req->assoc, assoc_nents,
|
|
|
|
edesc->link_tbl +
|
|
|
|
link_tbl_index, 0);
|
|
|
|
link_tbl_index += assoc_nents;
|
|
|
|
sg_to_link_tbl_one(edesc->link_tbl + link_tbl_index,
|
|
|
|
iv_dma, ivsize, 0);
|
|
|
|
link_tbl_index += 1;
|
|
|
|
sg_to_link_tbl_last(req->src, src_nents,
|
|
|
|
edesc->link_tbl +
|
|
|
|
link_tbl_index, 0);
|
|
|
|
link_tbl_index += src_nents;
|
|
|
|
}
|
|
|
|
if (unlikely(req->src != req->dst && !(contig & GIV_DST_CONTIG))) {
|
|
|
|
sg_to_link_tbl_one(edesc->link_tbl + link_tbl_index,
|
|
|
|
iv_dma, ivsize, 0);
|
|
|
|
link_tbl_index += 1;
|
|
|
|
sg_to_link_tbl_last(req->dst, dst_nents,
|
|
|
|
edesc->link_tbl + link_tbl_index, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
return edesc;
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
static int aead_givencrypt(struct aead_givcrypt_request *areq)
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
2011-07-15 03:21:41 +00:00
|
|
|
struct aead_request *req = &areq->areq;
|
|
|
|
struct aead_edesc *edesc;
|
|
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
2011-03-13 08:54:26 +00:00
|
|
|
struct caam_ctx *ctx = crypto_aead_ctx(aead);
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
2011-07-15 03:21:42 +00:00
|
|
|
u32 contig;
|
2011-03-13 08:54:26 +00:00
|
|
|
u32 *desc;
|
2011-07-15 03:21:42 +00:00
|
|
|
int ret = 0;
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
req->cryptlen += ctx->authsize;
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
/* allocate extended descriptor */
|
2011-07-15 03:21:42 +00:00
|
|
|
edesc = aead_giv_edesc_alloc(areq, DESC_JOB_IO_LEN *
|
|
|
|
CAAM_CMD_SZ, &contig);
|
|
|
|
|
2011-03-13 08:54:26 +00:00
|
|
|
if (IS_ERR(edesc))
|
|
|
|
return PTR_ERR(edesc);
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "giv src@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->src),
|
|
|
|
req->cryptlen, 1);
|
|
|
|
#endif
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
/* Create and submit job descriptor*/
|
|
|
|
init_aead_giv_job(ctx->sh_desc_givenc,
|
|
|
|
ctx->sh_desc_givenc_dma, edesc, req, contig);
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "aead jobdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
|
|
|
|
desc_bytes(edesc->hw_desc), 1);
|
|
|
|
#endif
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
desc = edesc->hw_desc;
|
|
|
|
ret = caam_jr_enqueue(jrdev, desc, aead_encrypt_done, req);
|
|
|
|
if (!ret) {
|
|
|
|
ret = -EINPROGRESS;
|
|
|
|
} else {
|
|
|
|
aead_unmap(jrdev, edesc, req);
|
|
|
|
kfree(edesc);
|
|
|
|
}
|
2011-03-13 08:54:26 +00:00
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
return ret;
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
/*
|
|
|
|
* allocate and map the ablkcipher extended descriptor for ablkcipher
|
|
|
|
*/
|
|
|
|
static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request
|
|
|
|
*req, int desc_bytes,
|
|
|
|
bool *iv_contig_out)
|
|
|
|
{
|
|
|
|
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
|
|
|
|
struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
|
|
|
gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
|
|
|
|
CRYPTO_TFM_REQ_MAY_SLEEP)) ?
|
|
|
|
GFP_KERNEL : GFP_ATOMIC;
|
|
|
|
int src_nents, dst_nents = 0, link_tbl_bytes;
|
|
|
|
struct ablkcipher_edesc *edesc;
|
|
|
|
dma_addr_t iv_dma = 0;
|
|
|
|
bool iv_contig = false;
|
|
|
|
int sgc;
|
|
|
|
int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
|
|
|
|
int link_tbl_index;
|
|
|
|
|
|
|
|
src_nents = sg_count(req->src, req->nbytes);
|
|
|
|
|
|
|
|
if (unlikely(req->dst != req->src))
|
|
|
|
dst_nents = sg_count(req->dst, req->nbytes);
|
|
|
|
|
|
|
|
if (likely(req->src == req->dst)) {
|
|
|
|
sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1,
|
|
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
} else {
|
|
|
|
sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1,
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
sgc = dma_map_sg(jrdev, req->dst, dst_nents ? : 1,
|
|
|
|
DMA_FROM_DEVICE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check if iv can be contiguous with source and destination.
|
|
|
|
* If so, include it. If not, create scatterlist.
|
|
|
|
*/
|
|
|
|
iv_dma = dma_map_single(jrdev, req->info, ivsize, DMA_TO_DEVICE);
|
|
|
|
if (!src_nents && iv_dma + ivsize == sg_dma_address(req->src))
|
|
|
|
iv_contig = true;
|
|
|
|
else
|
|
|
|
src_nents = src_nents ? : 1;
|
|
|
|
link_tbl_bytes = ((iv_contig ? 0 : 1) + src_nents + dst_nents) *
|
|
|
|
sizeof(struct link_tbl_entry);
|
|
|
|
|
|
|
|
/* allocate space for base edesc and hw desc commands, link tables */
|
|
|
|
edesc = kmalloc(sizeof(struct ablkcipher_edesc) + desc_bytes +
|
|
|
|
link_tbl_bytes, GFP_DMA | flags);
|
|
|
|
if (!edesc) {
|
|
|
|
dev_err(jrdev, "could not allocate extended descriptor\n");
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
edesc->src_nents = src_nents;
|
|
|
|
edesc->dst_nents = dst_nents;
|
|
|
|
edesc->link_tbl_bytes = link_tbl_bytes;
|
|
|
|
edesc->link_tbl = (void *)edesc + sizeof(struct ablkcipher_edesc) +
|
|
|
|
desc_bytes;
|
|
|
|
|
|
|
|
link_tbl_index = 0;
|
|
|
|
if (!iv_contig) {
|
|
|
|
sg_to_link_tbl_one(edesc->link_tbl, iv_dma, ivsize, 0);
|
|
|
|
sg_to_link_tbl_last(req->src, src_nents,
|
|
|
|
edesc->link_tbl + 1, 0);
|
|
|
|
link_tbl_index += 1 + src_nents;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (unlikely(dst_nents)) {
|
|
|
|
sg_to_link_tbl_last(req->dst, dst_nents,
|
|
|
|
edesc->link_tbl + link_tbl_index, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
edesc->link_tbl_dma = dma_map_single(jrdev, edesc->link_tbl,
|
|
|
|
link_tbl_bytes, DMA_TO_DEVICE);
|
|
|
|
edesc->iv_dma = iv_dma;
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "ablkcipher link_tbl@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, edesc->link_tbl,
|
|
|
|
link_tbl_bytes, 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
*iv_contig_out = iv_contig;
|
|
|
|
return edesc;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ablkcipher_encrypt(struct ablkcipher_request *req)
|
|
|
|
{
|
|
|
|
struct ablkcipher_edesc *edesc;
|
|
|
|
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
|
|
|
|
struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
|
|
|
bool iv_contig;
|
|
|
|
u32 *desc;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
/* allocate extended descriptor */
|
|
|
|
edesc = ablkcipher_edesc_alloc(req, DESC_JOB_IO_LEN *
|
|
|
|
CAAM_CMD_SZ, &iv_contig);
|
|
|
|
if (IS_ERR(edesc))
|
|
|
|
return PTR_ERR(edesc);
|
|
|
|
|
|
|
|
/* Create and submit job descriptor*/
|
|
|
|
init_ablkcipher_job(ctx->sh_desc_enc,
|
|
|
|
ctx->sh_desc_enc_dma, edesc, req, iv_contig);
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "ablkcipher jobdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
|
|
|
|
desc_bytes(edesc->hw_desc), 1);
|
|
|
|
#endif
|
|
|
|
desc = edesc->hw_desc;
|
|
|
|
ret = caam_jr_enqueue(jrdev, desc, ablkcipher_encrypt_done, req);
|
|
|
|
|
|
|
|
if (!ret) {
|
|
|
|
ret = -EINPROGRESS;
|
|
|
|
} else {
|
|
|
|
ablkcipher_unmap(jrdev, edesc, req);
|
|
|
|
kfree(edesc);
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ablkcipher_decrypt(struct ablkcipher_request *req)
|
|
|
|
{
|
|
|
|
struct ablkcipher_edesc *edesc;
|
|
|
|
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
|
|
|
|
struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
|
|
|
|
struct device *jrdev = ctx->jrdev;
|
|
|
|
bool iv_contig;
|
|
|
|
u32 *desc;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
/* allocate extended descriptor */
|
|
|
|
edesc = ablkcipher_edesc_alloc(req, DESC_JOB_IO_LEN *
|
|
|
|
CAAM_CMD_SZ, &iv_contig);
|
|
|
|
if (IS_ERR(edesc))
|
|
|
|
return PTR_ERR(edesc);
|
|
|
|
|
|
|
|
/* Create and submit job descriptor*/
|
|
|
|
init_ablkcipher_job(ctx->sh_desc_dec,
|
|
|
|
ctx->sh_desc_dec_dma, edesc, req, iv_contig);
|
|
|
|
desc = edesc->hw_desc;
|
|
|
|
#ifdef DEBUG
|
|
|
|
print_hex_dump(KERN_ERR, "ablkcipher jobdesc@"xstr(__LINE__)": ",
|
|
|
|
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
|
|
|
|
desc_bytes(edesc->hw_desc), 1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ret = caam_jr_enqueue(jrdev, desc, ablkcipher_decrypt_done, req);
|
|
|
|
if (!ret) {
|
|
|
|
ret = -EINPROGRESS;
|
|
|
|
} else {
|
|
|
|
ablkcipher_unmap(jrdev, edesc, req);
|
|
|
|
kfree(edesc);
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-07-15 03:21:41 +00:00
|
|
|
#define template_aead template_u.aead
|
2011-07-15 03:21:42 +00:00
|
|
|
#define template_ablkcipher template_u.ablkcipher
|
2011-03-13 08:54:26 +00:00
|
|
|
struct caam_alg_template {
|
|
|
|
char name[CRYPTO_MAX_ALG_NAME];
|
|
|
|
char driver_name[CRYPTO_MAX_ALG_NAME];
|
|
|
|
unsigned int blocksize;
|
2011-07-15 03:21:41 +00:00
|
|
|
u32 type;
|
|
|
|
union {
|
|
|
|
struct ablkcipher_alg ablkcipher;
|
|
|
|
struct aead_alg aead;
|
|
|
|
struct blkcipher_alg blkcipher;
|
|
|
|
struct cipher_alg cipher;
|
|
|
|
struct compress_alg compress;
|
|
|
|
struct rng_alg rng;
|
|
|
|
} template_u;
|
2011-03-13 08:54:26 +00:00
|
|
|
u32 class1_alg_type;
|
|
|
|
u32 class2_alg_type;
|
|
|
|
u32 alg_op;
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct caam_alg_template driver_algs[] = {
|
|
|
|
/* single-pass ipsec_esp descriptor */
|
|
|
|
{
|
|
|
|
.name = "authenc(hmac(sha1),cbc(aes))",
|
|
|
|
.driver_name = "authenc-hmac-sha1-cbc-aes-caam",
|
|
|
|
.blocksize = AES_BLOCK_SIZE,
|
2011-07-15 03:21:41 +00:00
|
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
|
|
.template_aead = {
|
2011-07-15 03:21:41 +00:00
|
|
|
.setkey = aead_setkey,
|
|
|
|
.setauthsize = aead_setauthsize,
|
|
|
|
.encrypt = aead_encrypt,
|
|
|
|
.decrypt = aead_decrypt,
|
|
|
|
.givencrypt = aead_givencrypt,
|
2011-03-13 08:54:26 +00:00
|
|
|
.geniv = "<built-in>",
|
|
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
|
|
.maxauthsize = SHA1_DIGEST_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
|
|
|
|
.class2_alg_type = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC_PRECOMP,
|
|
|
|
.alg_op = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.name = "authenc(hmac(sha256),cbc(aes))",
|
|
|
|
.driver_name = "authenc-hmac-sha256-cbc-aes-caam",
|
|
|
|
.blocksize = AES_BLOCK_SIZE,
|
2011-07-15 03:21:41 +00:00
|
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
|
|
.template_aead = {
|
2011-07-15 03:21:41 +00:00
|
|
|
.setkey = aead_setkey,
|
|
|
|
.setauthsize = aead_setauthsize,
|
|
|
|
.encrypt = aead_encrypt,
|
|
|
|
.decrypt = aead_decrypt,
|
|
|
|
.givencrypt = aead_givencrypt,
|
2011-03-13 08:54:26 +00:00
|
|
|
.geniv = "<built-in>",
|
|
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
|
|
.maxauthsize = SHA256_DIGEST_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
|
|
|
|
.class2_alg_type = OP_ALG_ALGSEL_SHA256 |
|
|
|
|
OP_ALG_AAI_HMAC_PRECOMP,
|
|
|
|
.alg_op = OP_ALG_ALGSEL_SHA256 | OP_ALG_AAI_HMAC,
|
|
|
|
},
|
2011-05-15 03:08:17 +00:00
|
|
|
{
|
|
|
|
.name = "authenc(hmac(sha512),cbc(aes))",
|
|
|
|
.driver_name = "authenc-hmac-sha512-cbc-aes-caam",
|
|
|
|
.blocksize = AES_BLOCK_SIZE,
|
2011-07-15 03:21:41 +00:00
|
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
|
|
.template_aead = {
|
2011-07-15 03:21:41 +00:00
|
|
|
.setkey = aead_setkey,
|
|
|
|
.setauthsize = aead_setauthsize,
|
|
|
|
.encrypt = aead_encrypt,
|
|
|
|
.decrypt = aead_decrypt,
|
|
|
|
.givencrypt = aead_givencrypt,
|
2011-05-15 03:08:17 +00:00
|
|
|
.geniv = "<built-in>",
|
|
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
|
|
.maxauthsize = SHA512_DIGEST_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
|
|
|
|
.class2_alg_type = OP_ALG_ALGSEL_SHA512 |
|
|
|
|
OP_ALG_AAI_HMAC_PRECOMP,
|
|
|
|
.alg_op = OP_ALG_ALGSEL_SHA512 | OP_ALG_AAI_HMAC,
|
|
|
|
},
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
|
|
|
.name = "authenc(hmac(sha1),cbc(des3_ede))",
|
|
|
|
.driver_name = "authenc-hmac-sha1-cbc-des3_ede-caam",
|
|
|
|
.blocksize = DES3_EDE_BLOCK_SIZE,
|
2011-07-15 03:21:41 +00:00
|
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
|
|
.template_aead = {
|
2011-07-15 03:21:41 +00:00
|
|
|
.setkey = aead_setkey,
|
|
|
|
.setauthsize = aead_setauthsize,
|
|
|
|
.encrypt = aead_encrypt,
|
|
|
|
.decrypt = aead_decrypt,
|
|
|
|
.givencrypt = aead_givencrypt,
|
2011-03-13 08:54:26 +00:00
|
|
|
.geniv = "<built-in>",
|
|
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
|
|
.maxauthsize = SHA1_DIGEST_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
|
|
|
|
.class2_alg_type = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC_PRECOMP,
|
|
|
|
.alg_op = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.name = "authenc(hmac(sha256),cbc(des3_ede))",
|
|
|
|
.driver_name = "authenc-hmac-sha256-cbc-des3_ede-caam",
|
|
|
|
.blocksize = DES3_EDE_BLOCK_SIZE,
|
2011-07-15 03:21:41 +00:00
|
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
|
|
.template_aead = {
|
2011-07-15 03:21:41 +00:00
|
|
|
.setkey = aead_setkey,
|
|
|
|
.setauthsize = aead_setauthsize,
|
|
|
|
.encrypt = aead_encrypt,
|
|
|
|
.decrypt = aead_decrypt,
|
|
|
|
.givencrypt = aead_givencrypt,
|
2011-03-13 08:54:26 +00:00
|
|
|
.geniv = "<built-in>",
|
|
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
|
|
.maxauthsize = SHA256_DIGEST_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
|
|
|
|
.class2_alg_type = OP_ALG_ALGSEL_SHA256 |
|
|
|
|
OP_ALG_AAI_HMAC_PRECOMP,
|
|
|
|
.alg_op = OP_ALG_ALGSEL_SHA256 | OP_ALG_AAI_HMAC,
|
|
|
|
},
|
2011-05-15 03:08:17 +00:00
|
|
|
{
|
|
|
|
.name = "authenc(hmac(sha512),cbc(des3_ede))",
|
|
|
|
.driver_name = "authenc-hmac-sha512-cbc-des3_ede-caam",
|
|
|
|
.blocksize = DES3_EDE_BLOCK_SIZE,
|
2011-07-15 03:21:41 +00:00
|
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
|
|
.template_aead = {
|
2011-07-15 03:21:41 +00:00
|
|
|
.setkey = aead_setkey,
|
|
|
|
.setauthsize = aead_setauthsize,
|
|
|
|
.encrypt = aead_encrypt,
|
|
|
|
.decrypt = aead_decrypt,
|
|
|
|
.givencrypt = aead_givencrypt,
|
2011-05-15 03:08:17 +00:00
|
|
|
.geniv = "<built-in>",
|
|
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
|
|
.maxauthsize = SHA512_DIGEST_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
|
|
|
|
.class2_alg_type = OP_ALG_ALGSEL_SHA512 |
|
|
|
|
OP_ALG_AAI_HMAC_PRECOMP,
|
|
|
|
.alg_op = OP_ALG_ALGSEL_SHA512 | OP_ALG_AAI_HMAC,
|
|
|
|
},
|
2011-03-13 08:54:26 +00:00
|
|
|
{
|
|
|
|
.name = "authenc(hmac(sha1),cbc(des))",
|
|
|
|
.driver_name = "authenc-hmac-sha1-cbc-des-caam",
|
|
|
|
.blocksize = DES_BLOCK_SIZE,
|
2011-07-15 03:21:41 +00:00
|
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
|
|
.template_aead = {
|
2011-07-15 03:21:41 +00:00
|
|
|
.setkey = aead_setkey,
|
|
|
|
.setauthsize = aead_setauthsize,
|
|
|
|
.encrypt = aead_encrypt,
|
|
|
|
.decrypt = aead_decrypt,
|
|
|
|
.givencrypt = aead_givencrypt,
|
2011-03-13 08:54:26 +00:00
|
|
|
.geniv = "<built-in>",
|
|
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
|
|
.maxauthsize = SHA1_DIGEST_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
|
|
|
|
.class2_alg_type = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC_PRECOMP,
|
|
|
|
.alg_op = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.name = "authenc(hmac(sha256),cbc(des))",
|
|
|
|
.driver_name = "authenc-hmac-sha256-cbc-des-caam",
|
|
|
|
.blocksize = DES_BLOCK_SIZE,
|
2011-07-15 03:21:41 +00:00
|
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
|
|
.template_aead = {
|
2011-07-15 03:21:41 +00:00
|
|
|
.setkey = aead_setkey,
|
|
|
|
.setauthsize = aead_setauthsize,
|
|
|
|
.encrypt = aead_encrypt,
|
|
|
|
.decrypt = aead_decrypt,
|
|
|
|
.givencrypt = aead_givencrypt,
|
2011-03-13 08:54:26 +00:00
|
|
|
.geniv = "<built-in>",
|
|
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
|
|
.maxauthsize = SHA256_DIGEST_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
|
|
|
|
.class2_alg_type = OP_ALG_ALGSEL_SHA256 |
|
|
|
|
OP_ALG_AAI_HMAC_PRECOMP,
|
|
|
|
.alg_op = OP_ALG_ALGSEL_SHA256 | OP_ALG_AAI_HMAC,
|
|
|
|
},
|
2011-05-15 03:08:17 +00:00
|
|
|
{
|
|
|
|
.name = "authenc(hmac(sha512),cbc(des))",
|
|
|
|
.driver_name = "authenc-hmac-sha512-cbc-des-caam",
|
|
|
|
.blocksize = DES_BLOCK_SIZE,
|
2011-07-15 03:21:41 +00:00
|
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
|
|
.template_aead = {
|
2011-07-15 03:21:41 +00:00
|
|
|
.setkey = aead_setkey,
|
|
|
|
.setauthsize = aead_setauthsize,
|
|
|
|
.encrypt = aead_encrypt,
|
|
|
|
.decrypt = aead_decrypt,
|
|
|
|
.givencrypt = aead_givencrypt,
|
2011-05-15 03:08:17 +00:00
|
|
|
.geniv = "<built-in>",
|
|
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
|
|
.maxauthsize = SHA512_DIGEST_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
|
|
|
|
.class2_alg_type = OP_ALG_ALGSEL_SHA512 |
|
|
|
|
OP_ALG_AAI_HMAC_PRECOMP,
|
|
|
|
.alg_op = OP_ALG_ALGSEL_SHA512 | OP_ALG_AAI_HMAC,
|
|
|
|
},
|
2011-07-15 03:21:42 +00:00
|
|
|
/* ablkcipher descriptor */
|
|
|
|
{
|
|
|
|
.name = "cbc(aes)",
|
|
|
|
.driver_name = "cbc-aes-caam",
|
|
|
|
.blocksize = AES_BLOCK_SIZE,
|
|
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
|
|
.template_ablkcipher = {
|
|
|
|
.setkey = ablkcipher_setkey,
|
|
|
|
.encrypt = ablkcipher_encrypt,
|
|
|
|
.decrypt = ablkcipher_decrypt,
|
|
|
|
.geniv = "eseqiv",
|
|
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.name = "cbc(des3_ede)",
|
|
|
|
.driver_name = "cbc-3des-caam",
|
|
|
|
.blocksize = DES3_EDE_BLOCK_SIZE,
|
|
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
|
|
.template_ablkcipher = {
|
|
|
|
.setkey = ablkcipher_setkey,
|
|
|
|
.encrypt = ablkcipher_encrypt,
|
|
|
|
.decrypt = ablkcipher_decrypt,
|
|
|
|
.geniv = "eseqiv",
|
|
|
|
.min_keysize = DES3_EDE_KEY_SIZE,
|
|
|
|
.max_keysize = DES3_EDE_KEY_SIZE,
|
|
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.name = "cbc(des)",
|
|
|
|
.driver_name = "cbc-des-caam",
|
|
|
|
.blocksize = DES_BLOCK_SIZE,
|
|
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
|
|
.template_ablkcipher = {
|
|
|
|
.setkey = ablkcipher_setkey,
|
|
|
|
.encrypt = ablkcipher_encrypt,
|
|
|
|
.decrypt = ablkcipher_decrypt,
|
|
|
|
.geniv = "eseqiv",
|
|
|
|
.min_keysize = DES_KEY_SIZE,
|
|
|
|
.max_keysize = DES_KEY_SIZE,
|
|
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
|
|
},
|
|
|
|
.class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
|
|
|
|
}
|
2011-03-13 08:54:26 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
struct caam_crypto_alg {
|
|
|
|
struct list_head entry;
|
|
|
|
struct device *ctrldev;
|
|
|
|
int class1_alg_type;
|
|
|
|
int class2_alg_type;
|
|
|
|
int alg_op;
|
|
|
|
struct crypto_alg crypto_alg;
|
|
|
|
};
|
|
|
|
|
|
|
|
static int caam_cra_init(struct crypto_tfm *tfm)
|
|
|
|
{
|
|
|
|
struct crypto_alg *alg = tfm->__crt_alg;
|
|
|
|
struct caam_crypto_alg *caam_alg =
|
|
|
|
container_of(alg, struct caam_crypto_alg, crypto_alg);
|
|
|
|
struct caam_ctx *ctx = crypto_tfm_ctx(tfm);
|
|
|
|
struct caam_drv_private *priv = dev_get_drvdata(caam_alg->ctrldev);
|
|
|
|
int tgt_jr = atomic_inc_return(&priv->tfm_count);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* distribute tfms across job rings to ensure in-order
|
|
|
|
* crypto request processing per tfm
|
|
|
|
*/
|
|
|
|
ctx->jrdev = priv->algapi_jr[(tgt_jr / 2) % priv->num_jrs_for_algapi];
|
|
|
|
|
|
|
|
/* copy descriptor header template value */
|
|
|
|
ctx->class1_alg_type = OP_TYPE_CLASS1_ALG | caam_alg->class1_alg_type;
|
|
|
|
ctx->class2_alg_type = OP_TYPE_CLASS2_ALG | caam_alg->class2_alg_type;
|
|
|
|
ctx->alg_op = OP_TYPE_CLASS2_ALG | caam_alg->alg_op;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void caam_cra_exit(struct crypto_tfm *tfm)
|
|
|
|
{
|
|
|
|
struct caam_ctx *ctx = crypto_tfm_ctx(tfm);
|
|
|
|
|
2011-07-15 03:21:42 +00:00
|
|
|
if (ctx->sh_desc_enc_dma &&
|
|
|
|
!dma_mapping_error(ctx->jrdev, ctx->sh_desc_enc_dma))
|
|
|
|
dma_unmap_single(ctx->jrdev, ctx->sh_desc_enc_dma,
|
|
|
|
desc_bytes(ctx->sh_desc_enc), DMA_TO_DEVICE);
|
|
|
|
if (ctx->sh_desc_dec_dma &&
|
|
|
|
!dma_mapping_error(ctx->jrdev, ctx->sh_desc_dec_dma))
|
|
|
|
dma_unmap_single(ctx->jrdev, ctx->sh_desc_dec_dma,
|
|
|
|
desc_bytes(ctx->sh_desc_dec), DMA_TO_DEVICE);
|
|
|
|
if (ctx->sh_desc_givenc_dma &&
|
|
|
|
!dma_mapping_error(ctx->jrdev, ctx->sh_desc_givenc_dma))
|
|
|
|
dma_unmap_single(ctx->jrdev, ctx->sh_desc_givenc_dma,
|
|
|
|
desc_bytes(ctx->sh_desc_givenc),
|
2011-05-15 03:08:17 +00:00
|
|
|
DMA_TO_DEVICE);
|
2011-03-13 08:54:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit caam_algapi_exit(void)
|
|
|
|
{
|
|
|
|
|
|
|
|
struct device_node *dev_node;
|
|
|
|
struct platform_device *pdev;
|
|
|
|
struct device *ctrldev;
|
|
|
|
struct caam_drv_private *priv;
|
|
|
|
struct caam_crypto_alg *t_alg, *n;
|
|
|
|
int i, err;
|
|
|
|
|
2011-03-23 13:15:44 +00:00
|
|
|
dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
|
2011-03-13 08:54:26 +00:00
|
|
|
if (!dev_node)
|
|
|
|
return;
|
|
|
|
|
|
|
|
pdev = of_find_device_by_node(dev_node);
|
|
|
|
if (!pdev)
|
|
|
|
return;
|
|
|
|
|
|
|
|
ctrldev = &pdev->dev;
|
|
|
|
of_node_put(dev_node);
|
|
|
|
priv = dev_get_drvdata(ctrldev);
|
|
|
|
|
|
|
|
if (!priv->alg_list.next)
|
|
|
|
return;
|
|
|
|
|
|
|
|
list_for_each_entry_safe(t_alg, n, &priv->alg_list, entry) {
|
|
|
|
crypto_unregister_alg(&t_alg->crypto_alg);
|
|
|
|
list_del(&t_alg->entry);
|
|
|
|
kfree(t_alg);
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < priv->total_jobrs; i++) {
|
|
|
|
err = caam_jr_deregister(priv->algapi_jr[i]);
|
|
|
|
if (err < 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
kfree(priv->algapi_jr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct caam_crypto_alg *caam_alg_alloc(struct device *ctrldev,
|
|
|
|
struct caam_alg_template
|
|
|
|
*template)
|
|
|
|
{
|
|
|
|
struct caam_crypto_alg *t_alg;
|
|
|
|
struct crypto_alg *alg;
|
|
|
|
|
|
|
|
t_alg = kzalloc(sizeof(struct caam_crypto_alg), GFP_KERNEL);
|
|
|
|
if (!t_alg) {
|
|
|
|
dev_err(ctrldev, "failed to allocate t_alg\n");
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
alg = &t_alg->crypto_alg;
|
|
|
|
|
|
|
|
snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", template->name);
|
|
|
|
snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
|
|
|
|
template->driver_name);
|
|
|
|
alg->cra_module = THIS_MODULE;
|
|
|
|
alg->cra_init = caam_cra_init;
|
|
|
|
alg->cra_exit = caam_cra_exit;
|
|
|
|
alg->cra_priority = CAAM_CRA_PRIORITY;
|
|
|
|
alg->cra_blocksize = template->blocksize;
|
|
|
|
alg->cra_alignmask = 0;
|
|
|
|
alg->cra_ctxsize = sizeof(struct caam_ctx);
|
2011-07-15 03:21:41 +00:00
|
|
|
alg->cra_flags = CRYPTO_ALG_ASYNC | template->type;
|
|
|
|
switch (template->type) {
|
2011-07-15 03:21:42 +00:00
|
|
|
case CRYPTO_ALG_TYPE_ABLKCIPHER:
|
|
|
|
alg->cra_type = &crypto_ablkcipher_type;
|
|
|
|
alg->cra_ablkcipher = template->template_ablkcipher;
|
|
|
|
break;
|
2011-07-15 03:21:41 +00:00
|
|
|
case CRYPTO_ALG_TYPE_AEAD:
|
|
|
|
alg->cra_type = &crypto_aead_type;
|
|
|
|
alg->cra_aead = template->template_aead;
|
|
|
|
break;
|
|
|
|
}
|
2011-03-13 08:54:26 +00:00
|
|
|
|
|
|
|
t_alg->class1_alg_type = template->class1_alg_type;
|
|
|
|
t_alg->class2_alg_type = template->class2_alg_type;
|
|
|
|
t_alg->alg_op = template->alg_op;
|
|
|
|
t_alg->ctrldev = ctrldev;
|
|
|
|
|
|
|
|
return t_alg;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init caam_algapi_init(void)
|
|
|
|
{
|
|
|
|
struct device_node *dev_node;
|
|
|
|
struct platform_device *pdev;
|
|
|
|
struct device *ctrldev, **jrdev;
|
|
|
|
struct caam_drv_private *priv;
|
|
|
|
int i = 0, err = 0;
|
|
|
|
|
2011-03-23 13:15:44 +00:00
|
|
|
dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
|
2011-03-13 08:54:26 +00:00
|
|
|
if (!dev_node)
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
pdev = of_find_device_by_node(dev_node);
|
|
|
|
if (!pdev)
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
ctrldev = &pdev->dev;
|
|
|
|
priv = dev_get_drvdata(ctrldev);
|
|
|
|
of_node_put(dev_node);
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&priv->alg_list);
|
|
|
|
|
|
|
|
jrdev = kmalloc(sizeof(*jrdev) * priv->total_jobrs, GFP_KERNEL);
|
|
|
|
if (!jrdev)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
for (i = 0; i < priv->total_jobrs; i++) {
|
|
|
|
err = caam_jr_register(ctrldev, &jrdev[i]);
|
|
|
|
if (err < 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (err < 0 && i == 0) {
|
|
|
|
dev_err(ctrldev, "algapi error in job ring registration: %d\n",
|
|
|
|
err);
|
2011-04-08 12:39:23 +00:00
|
|
|
kfree(jrdev);
|
2011-03-13 08:54:26 +00:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
priv->num_jrs_for_algapi = i;
|
|
|
|
priv->algapi_jr = jrdev;
|
|
|
|
atomic_set(&priv->tfm_count, -1);
|
|
|
|
|
|
|
|
/* register crypto algorithms the device supports */
|
|
|
|
for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
|
|
|
|
/* TODO: check if h/w supports alg */
|
|
|
|
struct caam_crypto_alg *t_alg;
|
|
|
|
|
|
|
|
t_alg = caam_alg_alloc(ctrldev, &driver_algs[i]);
|
|
|
|
if (IS_ERR(t_alg)) {
|
|
|
|
err = PTR_ERR(t_alg);
|
|
|
|
dev_warn(ctrldev, "%s alg allocation failed\n",
|
2011-03-23 13:20:27 +00:00
|
|
|
driver_algs[i].driver_name);
|
2011-03-13 08:54:26 +00:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = crypto_register_alg(&t_alg->crypto_alg);
|
|
|
|
if (err) {
|
|
|
|
dev_warn(ctrldev, "%s alg registration failed\n",
|
|
|
|
t_alg->crypto_alg.cra_driver_name);
|
|
|
|
kfree(t_alg);
|
|
|
|
} else {
|
|
|
|
list_add_tail(&t_alg->entry, &priv->alg_list);
|
|
|
|
dev_info(ctrldev, "%s\n",
|
|
|
|
t_alg->crypto_alg.cra_driver_name);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(caam_algapi_init);
|
|
|
|
module_exit(caam_algapi_exit);
|
|
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_DESCRIPTION("FSL CAAM support for crypto API");
|
|
|
|
MODULE_AUTHOR("Freescale Semiconductor - NMG/STC");
|