1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * *
10 * This program is free software; you can redistribute it and/or *
11 * modify it under the terms of version 2 of the GNU General *
12 * Public License as published by the Free Software Foundation. *
13 * This program is distributed in the hope that it will be useful. *
14 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
15 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
16 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
17 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
18 * TO BE LEGALLY INVALID. See the GNU General Public License for *
19 * more details, a copy of which can be found in the file COPYING *
20 * included with this package. *
21 *******************************************************************/
22
23 #include <asm/byteorder.h>
24
25 struct lpfc_hba;
26 #define LPFC_FCP_CDB_LEN 16
27
28 #define list_remove_head(list, entry, type, member) \
29 do { \
30 entry = NULL; \
31 if (!list_empty(list)) { \
32 entry = list_entry((list)->next, type, member); \
33 list_del_init(&entry->member); \
34 } \
35 } while(0)
36
37 #define list_get_first(list, type, member) \
38 (list_empty(list)) ? NULL : \
39 list_entry((list)->next, type, member)
40
41 /* per-port data that is allocated in the FC transport for us */
42 struct lpfc_rport_data {
43 struct lpfc_nodelist *pnode; /* Pointer to the node structure. */
44 };
45
46 struct lpfc_device_id {
47 struct lpfc_name vport_wwpn;
48 struct lpfc_name target_wwpn;
49 uint64_t lun;
50 };
51
52 struct lpfc_device_data {
53 struct list_head listentry;
54 struct lpfc_rport_data *rport_data;
55 struct lpfc_device_id device_id;
56 uint8_t priority;
57 bool oas_enabled;
58 bool available;
59 };
60
61 struct fcp_rsp {
62 uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */
63 uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */
64
65 uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */
66 uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */
67 uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */
68 #define RSP_LEN_VALID 0x01 /* bit 0 */
69 #define SNS_LEN_VALID 0x02 /* bit 1 */
70 #define RESID_OVER 0x04 /* bit 2 */
71 #define RESID_UNDER 0x08 /* bit 3 */
72 uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */
73
74 uint32_t rspResId; /* Residual xfer if residual count field set in
75 fcpStatus2 */
76 /* Received in Big Endian format */
77 uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */
78 /* Received in Big Endian format */
79 uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */
80 /* Received in Big Endian format */
81
82 uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */
83 uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */
84 uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */
85 uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */
86
87 #define RSP_NO_FAILURE 0x00
88 #define RSP_DATA_BURST_ERR 0x01
89 #define RSP_CMD_FIELD_ERR 0x02
90 #define RSP_RO_MISMATCH_ERR 0x03
91 #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */
92 #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */
93 #define RSP_TM_INVALID_LU 0x09 /* Task mgmt function to invalid LU */
94
95 uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */
96
97 uint8_t rspSnsInfo[128];
98 #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */
99 #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */
100 };
101
102 struct fcp_cmnd {
103 struct scsi_lun fcp_lun;
104
105 uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */
106 uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */
107 #define SIMPLE_Q 0x00
108 #define HEAD_OF_Q 0x01
109 #define ORDERED_Q 0x02
110 #define ACA_Q 0x04
111 #define UNTAGGED 0x05
112 uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */
113 #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */
114 #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */
115 #define FCP_BUS_RESET 0x08 /* bit 3 */
116 #define FCP_LUN_RESET 0x10 /* bit 4 */
117 #define FCP_TARGET_RESET 0x20 /* bit 5 */
118 #define FCP_CLEAR_ACA 0x40 /* bit 6 */
119 #define FCP_TERMINATE_TASK 0x80 /* bit 7 */
120 uint8_t fcpCntl3;
121 #define WRITE_DATA 0x01 /* Bit 0 */
122 #define READ_DATA 0x02 /* Bit 1 */
123
124 uint8_t fcpCdb[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */
125 uint32_t fcpDl; /* Total transfer length */
126
127 };
128
129 struct lpfc_scsicmd_bkt {
130 uint32_t cmd_count;
131 };
132
133 #define LPFC_SCSI_DMA_EXT_SIZE 264
134 #define LPFC_BPL_SIZE 1024
135 #define MDAC_DIRECT_CMD 0x22
136
137 #define FIND_FIRST_OAS_LUN 0
138 #define NO_MORE_OAS_LUN -1
139 #define NOT_OAS_ENABLED_LUN NO_MORE_OAS_LUN
140
141 #ifndef FC_PORTSPEED_128GBIT
142 #define FC_PORTSPEED_128GBIT 0x2000
143 #endif
144
145 #define TXRDY_PAYLOAD_LEN 12
146
147 /* For sysfs/debugfs tmp string max len */
148 #define LPFC_MAX_SCSI_INFO_TMP_LEN 79
149