LXR linux/drivers/scsi/qedf/drv_scsi_fw

   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
  11struct 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
  23struct 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
  52struct 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 */
  69bool 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 */
  79void 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