1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* QLogic FCoE Offload Driver 3 * Copyright (c) 2016-2018 Cavium Inc. 4 */ 5 #ifndef _SCSI_FW_FUNCS_H 6 #define _SCSI_FW_FUNCS_H 7 #include <linux/qed/common_hsi.h> 8 #include <linux/qed/storage_common.h> 9 #include <linux/qed/fcoe_common.h> 10 11 struct scsi_sgl_task_params { 12 struct scsi_sge *sgl; 13 struct regpair sgl_phys_addr; 14 u32 total_buffer_size; 15 u16 num_sges; 16 17 /* true if SGL contains a small (< 4KB) SGE in middle(not 1st or last) 18 * -> relevant for tx only 19 */ 20 bool small_mid_sge; 21 }; 22 23 struct scsi_dif_task_params { 24 u32 initial_ref_tag; 25 bool initial_ref_tag_is_valid; 26 u16 application_tag; 27 u16 application_tag_mask; 28 u16 dif_block_size_log; 29 bool dif_on_network; 30 bool dif_on_host; 31 u8 host_guard_type; 32 u8 protection_type; 33 u8 ref_tag_mask; 34 bool crc_seed; 35 36 /* Enable Connection error upon DIF error (segments with DIF errors are 37 * dropped) 38 */ 39 bool tx_dif_conn_err_en; 40 bool ignore_app_tag; 41 bool keep_ref_tag_const; 42 bool validate_guard; 43 bool validate_app_tag; 44 bool validate_ref_tag; 45 bool forward_guard; 46 bool forward_app_tag; 47 bool forward_ref_tag; 48 bool forward_app_tag_with_mask; 49 bool forward_ref_tag_with_mask; 50 }; 51 52 struct scsi_initiator_cmd_params { 53 /* for cdb_size > default CDB size (extended CDB > 16 bytes) -> 54 * pointer to the CDB buffer SGE 55 */ 56 struct scsi_sge extended_cdb_sge; 57 58 /* Physical address of sense data buffer for sense data - 256B buffer */ 59 struct regpair sense_data_buffer_phys_addr; 60 }; 61 62 /** 63 * @brief scsi_is_slow_sgl - checks for slow SGL 64 * 65 * @param num_sges - number of sges in SGL 66 * @param small_mid_sge - True is the SGL contains an SGE which is smaller than 67 * 4KB and its not the 1st or last SGE in the SGL 68 */ 69 bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge); 70 71 /** 72 * @brief init_scsi_sgl_context - initializes SGL task context 73 * 74 * @param sgl_params - SGL context parameters to initialize (output parameter) 75 * @param data_desc - context struct containing SGEs array to set (output 76 * parameter) 77 * @param sgl_task_params - SGL parameters (input) 78 */ 79 void init_scsi_sgl_context(struct scsi_sgl_params *sgl_params, 80 struct scsi_cached_sges *ctx_data_desc, 81 struct scsi_sgl_task_params *sgl_task_params); 82 #endif 83