xref: /openbmc/linux/drivers/scsi/lpfc/lpfc_scsi.h (revision 234489ac)
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2017-2022 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 #define LPFC_SCSI_DMA_EXT_SIZE	264
130 #define LPFC_BPL_SIZE		1024
131 #define MDAC_DIRECT_CMD		0x22
132 
133 #define FIND_FIRST_OAS_LUN	0
134 #define NO_MORE_OAS_LUN		-1
135 #define NOT_OAS_ENABLED_LUN	NO_MORE_OAS_LUN
136 
137 #ifndef FC_PORTSPEED_128GBIT
138 #define FC_PORTSPEED_128GBIT	0x2000
139 #endif
140 
141 #ifndef FC_PORTSPEED_256GBIT
142 #define FC_PORTSPEED_256GBIT	0x4000
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 
150