1 /* 2 * Header file for multi buffer SHA256 algorithm manager 3 * 4 * This file is provided under a dual BSD/GPLv2 license. When using or 5 * redistributing this file, you may do so under either license. 6 * 7 * GPL LICENSE SUMMARY 8 * 9 * Copyright(c) 2016 Intel Corporation. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * Contact Information: 21 * Megha Dey <megha.dey@linux.intel.com> 22 * 23 * BSD LICENSE 24 * 25 * Copyright(c) 2016 Intel Corporation. 26 * 27 * Redistribution and use in source and binary forms, with or without 28 * modification, are permitted provided that the following conditions 29 * are met: 30 * 31 * * Redistributions of source code must retain the above copyright 32 * notice, this list of conditions and the following disclaimer. 33 * * Redistributions in binary form must reproduce the above copyright 34 * notice, this list of conditions and the following disclaimer in 35 * the documentation and/or other materials provided with the 36 * distribution. 37 * * Neither the name of Intel Corporation nor the names of its 38 * contributors may be used to endorse or promote products derived 39 * from this software without specific prior written permission. 40 * 41 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 42 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 43 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 44 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 45 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 48 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 49 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 50 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 51 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 52 */ 53 #ifndef __SHA_MB_MGR_H 54 #define __SHA_MB_MGR_H 55 56 #include <linux/types.h> 57 58 #define NUM_SHA256_DIGEST_WORDS 8 59 60 enum job_sts { STS_UNKNOWN = 0, 61 STS_BEING_PROCESSED = 1, 62 STS_COMPLETED = 2, 63 STS_INTERNAL_ERROR = 3, 64 STS_ERROR = 4 65 }; 66 67 struct job_sha256 { 68 u8 *buffer; 69 u32 len; 70 u32 result_digest[NUM_SHA256_DIGEST_WORDS] __aligned(32); 71 enum job_sts status; 72 void *user_data; 73 }; 74 75 /* SHA256 out-of-order scheduler */ 76 77 /* typedef uint32_t sha8_digest_array[8][8]; */ 78 79 struct sha256_args_x8 { 80 uint32_t digest[8][8]; 81 uint8_t *data_ptr[8]; 82 }; 83 84 struct sha256_lane_data { 85 struct job_sha256 *job_in_lane; 86 }; 87 88 struct sha256_mb_mgr { 89 struct sha256_args_x8 args; 90 91 uint32_t lens[8]; 92 93 /* each byte is index (0...7) of unused lanes */ 94 uint64_t unused_lanes; 95 /* byte 4 is set to FF as a flag */ 96 struct sha256_lane_data ldata[8]; 97 }; 98 99 100 #define SHA256_MB_MGR_NUM_LANES_AVX2 8 101 102 void sha256_mb_mgr_init_avx2(struct sha256_mb_mgr *state); 103 struct job_sha256 *sha256_mb_mgr_submit_avx2(struct sha256_mb_mgr *state, 104 struct job_sha256 *job); 105 struct job_sha256 *sha256_mb_mgr_flush_avx2(struct sha256_mb_mgr *state); 106 struct job_sha256 *sha256_mb_mgr_get_comp_job_avx2(struct sha256_mb_mgr *state); 107 108 #endif 109