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