1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2018 Cavium, Inc 3 */ 4 5 #include <rte_common.h> 6 7 #include "cpt_common.h" 8 #include "cpt_hw_types.h" 9 #include "cpt_mcode_defines.h" 10 #include "cpt_pmd_ops_helper.h" 11 12 #define CPT_MAX_IV_LEN 16 13 #define CPT_OFFSET_CONTROL_BYTES 8 14 #define CPT_MAX_ASYM_OP_NUM_PARAMS 5 15 #define CPT_MAX_ASYM_OP_MOD_LEN 1024 16 17 int32_t 18 cpt_pmd_ops_helper_get_mlen_direct_mode(void) 19 { 20 uint32_t len = 0; 21 22 /* Request structure */ 23 len = sizeof(struct cpt_request_info); 24 25 /* CPT HW result structure plus extra as it is aligned */ 26 len += 2*sizeof(cpt_res_s_t); 27 28 return len; 29 } 30 31 int 32 cpt_pmd_ops_helper_get_mlen_sg_mode(void) 33 { 34 uint32_t len = 0; 35 36 len += sizeof(struct cpt_request_info); 37 len += CPT_OFFSET_CONTROL_BYTES + CPT_MAX_IV_LEN; 38 len += ROUNDUP8(SG_LIST_HDR_SIZE + 39 (ROUNDUP4(CPT_MAX_SG_IN_OUT_CNT) >> 2) * SG_ENTRY_SIZE); 40 len += 2 * COMPLETION_CODE_SIZE; 41 len += 2 * sizeof(cpt_res_s_t); 42 return len; 43 } 44 45 int 46 cpt_pmd_ops_helper_asym_get_mlen(void) 47 { 48 uint32_t len; 49 50 /* Get meta len for linear buffer (direct) mode */ 51 len = cpt_pmd_ops_helper_get_mlen_direct_mode(); 52 53 /* Get meta len for asymmetric operations */ 54 len += CPT_MAX_ASYM_OP_NUM_PARAMS * CPT_MAX_ASYM_OP_MOD_LEN; 55 return len; 56 } 57