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Add Broadcom Secure Processing Unit (SPU) crypto driver for SPU hardware crypto offload. The driver supports ablkcipher, ahash, and aead symmetric crypto operations. Signed-off-by: Steve Lin <steven.lin1@broadcom.com> Signed-off-by: Rob Rice <rob.rice@broadcom.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
116 lines
3.8 KiB
C
116 lines
3.8 KiB
C
/*
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* Copyright 2016 Broadcom
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation (the "GPL").
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 (GPLv2) for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 (GPLv2) along with this source code.
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*/
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#ifndef _UTIL_H
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#define _UTIL_H
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include "spu.h"
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extern int flow_debug_logging;
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extern int packet_debug_logging;
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extern int debug_logging_sleep;
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#ifdef DEBUG
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#define flow_log(...) \
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do { \
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if (flow_debug_logging) { \
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printk(__VA_ARGS__); \
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if (debug_logging_sleep) \
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msleep(debug_logging_sleep); \
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} \
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} while (0)
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#define flow_dump(msg, var, var_len) \
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do { \
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if (flow_debug_logging) { \
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print_hex_dump(KERN_ALERT, msg, DUMP_PREFIX_NONE, \
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16, 1, var, var_len, false); \
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if (debug_logging_sleep) \
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msleep(debug_logging_sleep); \
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} \
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} while (0)
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#define packet_log(...) \
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do { \
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if (packet_debug_logging) { \
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printk(__VA_ARGS__); \
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if (debug_logging_sleep) \
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msleep(debug_logging_sleep); \
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} \
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} while (0)
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#define packet_dump(msg, var, var_len) \
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do { \
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if (packet_debug_logging) { \
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print_hex_dump(KERN_ALERT, msg, DUMP_PREFIX_NONE, \
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16, 1, var, var_len, false); \
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if (debug_logging_sleep) \
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msleep(debug_logging_sleep); \
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} \
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} while (0)
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void __dump_sg(struct scatterlist *sg, unsigned int skip, unsigned int len);
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#define dump_sg(sg, skip, len) __dump_sg(sg, skip, len)
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#else /* !DEBUG_ON */
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#define flow_log(...) do {} while (0)
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#define flow_dump(msg, var, var_len) do {} while (0)
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#define packet_log(...) do {} while (0)
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#define packet_dump(msg, var, var_len) do {} while (0)
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#define dump_sg(sg, skip, len) do {} while (0)
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#endif /* DEBUG_ON */
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int spu_sg_at_offset(struct scatterlist *sg, unsigned int skip,
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struct scatterlist **sge, unsigned int *sge_offset);
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/* Copy sg data, from skip, length len, to dest */
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void sg_copy_part_to_buf(struct scatterlist *src, u8 *dest,
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unsigned int len, unsigned int skip);
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/* Copy src into scatterlist from offset, length len */
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void sg_copy_part_from_buf(struct scatterlist *dest, u8 *src,
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unsigned int len, unsigned int skip);
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int spu_sg_count(struct scatterlist *sg_list, unsigned int skip, int nbytes);
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u32 spu_msg_sg_add(struct scatterlist **to_sg,
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struct scatterlist **from_sg, u32 *skip,
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u8 from_nents, u32 tot_len);
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void add_to_ctr(u8 *ctr_pos, unsigned int increment);
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/* do a synchronous decrypt operation */
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int do_decrypt(char *alg_name,
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void *key_ptr, unsigned int key_len,
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void *iv_ptr, void *src_ptr, void *dst_ptr,
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unsigned int block_len);
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/* produce a message digest from data of length n bytes */
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int do_shash(unsigned char *name, unsigned char *result,
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const u8 *data1, unsigned int data1_len,
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const u8 *data2, unsigned int data2_len,
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const u8 *key, unsigned int key_len);
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char *spu_alg_name(enum spu_cipher_alg alg, enum spu_cipher_mode mode);
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void spu_setup_debugfs(void);
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void spu_free_debugfs(void);
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void format_value_ccm(unsigned int val, u8 *buf, u8 len);
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#endif
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