drivers/scsi/qedf/drv_scsi_fw_funcs.h

   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