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dea3101e | 1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
d85296cf | 4 | * Copyright (C) 2004-2012 Emulex. All rights reserved. * |
c44ce173 | 5 | * EMULEX and SLI are trademarks of Emulex. * |
dea3101e | 6 | * www.emulex.com * |
7 | * * | |
8 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
9 | * modify it under the terms of version 2 of the GNU General * |
10 | * Public License as published by the Free Software Foundation. * | |
11 | * This program is distributed in the hope that it will be useful. * | |
12 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
13 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
14 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
15 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
16 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
17 | * more details, a copy of which can be found in the file COPYING * | |
18 | * included with this package. * | |
dea3101e | 19 | *******************************************************************/ |
20 | ||
44456d37 OH |
21 | #include <asm/byteorder.h> |
22 | ||
dea3101e | 23 | struct lpfc_hba; |
df9e1b59 | 24 | #define LPFC_FCP_CDB_LEN 16 |
dea3101e | 25 | |
26 | #define list_remove_head(list, entry, type, member) \ | |
286fc8f8 JB |
27 | do { \ |
28 | entry = NULL; \ | |
dea3101e | 29 | if (!list_empty(list)) { \ |
30 | entry = list_entry((list)->next, type, member); \ | |
31 | list_del_init(&entry->member); \ | |
286fc8f8 JB |
32 | } \ |
33 | } while(0) | |
dea3101e | 34 | |
35 | #define list_get_first(list, type, member) \ | |
36 | (list_empty(list)) ? NULL : \ | |
37 | list_entry((list)->next, type, member) | |
38 | ||
39 | /* per-port data that is allocated in the FC transport for us */ | |
40 | struct lpfc_rport_data { | |
41 | struct lpfc_nodelist *pnode; /* Pointer to the node structure. */ | |
42 | }; | |
43 | ||
44 | struct fcp_rsp { | |
45 | uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */ | |
46 | uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */ | |
47 | ||
48 | uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */ | |
49 | uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */ | |
50 | uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */ | |
51 | #define RSP_LEN_VALID 0x01 /* bit 0 */ | |
52 | #define SNS_LEN_VALID 0x02 /* bit 1 */ | |
53 | #define RESID_OVER 0x04 /* bit 2 */ | |
54 | #define RESID_UNDER 0x08 /* bit 3 */ | |
55 | uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */ | |
56 | ||
57 | uint32_t rspResId; /* Residual xfer if residual count field set in | |
58 | fcpStatus2 */ | |
59 | /* Received in Big Endian format */ | |
60 | uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */ | |
61 | /* Received in Big Endian format */ | |
62 | uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */ | |
63 | /* Received in Big Endian format */ | |
64 | ||
65 | uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */ | |
66 | uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */ | |
67 | uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */ | |
68 | uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */ | |
69 | ||
70 | #define RSP_NO_FAILURE 0x00 | |
71 | #define RSP_DATA_BURST_ERR 0x01 | |
72 | #define RSP_CMD_FIELD_ERR 0x02 | |
73 | #define RSP_RO_MISMATCH_ERR 0x03 | |
74 | #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */ | |
75 | #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */ | |
76 | ||
77 | uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */ | |
78 | ||
79 | uint8_t rspSnsInfo[128]; | |
80 | #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */ | |
81 | #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */ | |
82 | }; | |
83 | ||
84 | struct fcp_cmnd { | |
91886523 | 85 | struct scsi_lun fcp_lun; |
dea3101e | 86 | |
87 | uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */ | |
88 | uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */ | |
89 | #define SIMPLE_Q 0x00 | |
90 | #define HEAD_OF_Q 0x01 | |
91 | #define ORDERED_Q 0x02 | |
92 | #define ACA_Q 0x04 | |
93 | #define UNTAGGED 0x05 | |
94 | uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */ | |
95 | #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */ | |
96 | #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */ | |
97 | #define FCP_BUS_RESET 0x08 /* bit 3 */ | |
98 | #define FCP_LUN_RESET 0x10 /* bit 4 */ | |
99 | #define FCP_TARGET_RESET 0x20 /* bit 5 */ | |
100 | #define FCP_CLEAR_ACA 0x40 /* bit 6 */ | |
101 | #define FCP_TERMINATE_TASK 0x80 /* bit 7 */ | |
102 | uint8_t fcpCntl3; | |
103 | #define WRITE_DATA 0x01 /* Bit 0 */ | |
104 | #define READ_DATA 0x02 /* Bit 1 */ | |
105 | ||
df9e1b59 | 106 | uint8_t fcpCdb[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */ |
dea3101e | 107 | uint32_t fcpDl; /* Total transfer length */ |
108 | ||
109 | }; | |
110 | ||
ea2151b4 JS |
111 | struct lpfc_scsicmd_bkt { |
112 | uint32_t cmd_count; | |
113 | }; | |
114 | ||
dea3101e | 115 | struct lpfc_scsi_buf { |
116 | struct list_head list; | |
117 | struct scsi_cmnd *pCmd; | |
dea3101e | 118 | struct lpfc_rport_data *rdata; |
119 | ||
120 | uint32_t timeout; | |
121 | ||
341af102 | 122 | uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ |
dea3101e | 123 | uint16_t status; /* From IOCB Word 7- ulpStatus */ |
124 | uint32_t result; /* From IOCB Word 4. */ | |
125 | ||
126 | uint32_t seg_cnt; /* Number of scatter-gather segments returned by | |
127 | * dma_map_sg. The driver needs this for calls | |
128 | * to dma_unmap_sg. */ | |
e2a0a9d6 JS |
129 | uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */ |
130 | ||
dea3101e | 131 | dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ |
132 | ||
133 | /* | |
25985edc | 134 | * data and dma_handle are the kernel virtual and bus address of the |
dea3101e | 135 | * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter |
136 | * gather bde list that supports the sg_tablesize value. | |
137 | */ | |
138 | void *data; | |
139 | dma_addr_t dma_handle; | |
140 | ||
141 | struct fcp_cmnd *fcp_cmnd; | |
142 | struct fcp_rsp *fcp_rsp; | |
143 | struct ulp_bde64 *fcp_bpl; | |
144 | ||
da0436e9 JS |
145 | dma_addr_t dma_phys_bpl; |
146 | ||
dea3101e | 147 | /* cur_iocbq has phys of the dma-able buffer. |
148 | * Iotag is in here | |
149 | */ | |
150 | struct lpfc_iocbq cur_iocbq; | |
fa61a54e | 151 | wait_queue_head_t *waitq; |
977b5a0a | 152 | unsigned long start_time; |
9a6b09c0 JS |
153 | |
154 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS | |
155 | /* Used to restore any changes to protection data for error injection */ | |
156 | void *prot_data_segment; | |
157 | uint32_t prot_data; | |
158 | uint32_t prot_data_type; | |
159 | #define LPFC_INJERR_REFTAG 1 | |
160 | #define LPFC_INJERR_APPTAG 2 | |
161 | #define LPFC_INJERR_GUARD 3 | |
162 | #endif | |
dea3101e | 163 | }; |
164 | ||
165 | #define LPFC_SCSI_DMA_EXT_SIZE 264 | |
166 | #define LPFC_BPL_SIZE 1024 | |
dea3101e | 167 | #define MDAC_DIRECT_CMD 0x22 |