1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2006 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * *
8 * This program is free software; you can redistribute it and/or *
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. *
19 *******************************************************************/
20
21 #include <asm/byteorder.h>
22
23 struct lpfc_hba;
24
25 #define list_remove_head(list, entry, type, member) \
26 do { \
27 entry = NULL; \
28 if (!list_empty(list)) { \
29 entry = list_entry((list)->next, type, member); \
30 list_del_init(&entry->member); \
31 } \
32 } while(0)
33
34 #define list_get_first(list, type, member) \
35 (list_empty(list)) ? NULL : \
36 list_entry((list)->next, type, member)
37
38 /* per-port data that is allocated in the FC transport for us */
39 struct lpfc_rport_data {
40 struct lpfc_nodelist *pnode; /* Pointer to the node structure. */
41 };
42
43 struct fcp_rsp {
44 uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */
45 uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */
46
47 uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */
48 uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */
49 uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */
50 #define RSP_LEN_VALID 0x01 /* bit 0 */
51 #define SNS_LEN_VALID 0x02 /* bit 1 */
52 #define RESID_OVER 0x04 /* bit 2 */
53 #define RESID_UNDER 0x08 /* bit 3 */
54 uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */
55
56 uint32_t rspResId; /* Residual xfer if residual count field set in
57 fcpStatus2 */
58 /* Received in Big Endian format */
59 uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */
60 /* Received in Big Endian format */
61 uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */
62 /* Received in Big Endian format */
63
64 uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */
65 uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */
66 uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */
67 uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */
68
69 #define RSP_NO_FAILURE 0x00
70 #define RSP_DATA_BURST_ERR 0x01
71 #define RSP_CMD_FIELD_ERR 0x02
72 #define RSP_RO_MISMATCH_ERR 0x03
73 #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */
74 #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */
75
76 uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */
77
78 uint8_t rspSnsInfo[128];
79 #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */
80 #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */
81 };
82
83 struct fcp_cmnd {
84 struct scsi_lun fcp_lun;
85
86 uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */
87 uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */
88 #define SIMPLE_Q 0x00
89 #define HEAD_OF_Q 0x01
90 #define ORDERED_Q 0x02
91 #define ACA_Q 0x04
92 #define UNTAGGED 0x05
93 uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */
94 #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */
95 #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */
96 #define FCP_BUS_RESET 0x08 /* bit 3 */
97 #define FCP_LUN_RESET 0x10 /* bit 4 */
98 #define FCP_TARGET_RESET 0x20 /* bit 5 */
99 #define FCP_CLEAR_ACA 0x40 /* bit 6 */
100 #define FCP_TERMINATE_TASK 0x80 /* bit 7 */
101 uint8_t fcpCntl3;
102 #define WRITE_DATA 0x01 /* Bit 0 */
103 #define READ_DATA 0x02 /* Bit 1 */
104
105 uint8_t fcpCdb[16]; /* SRB cdb field is copied here */
106 uint32_t fcpDl; /* Total transfer length */
107
108 };
109
110 struct lpfc_scsicmd_bkt {
111 uint32_t cmd_count;
112 };
113
114 struct lpfc_scsi_buf {
115 struct list_head list;
116 struct scsi_cmnd *pCmd;
117 struct lpfc_rport_data *rdata;
118
119 uint32_t timeout;
120
121 uint16_t status; /* From IOCB Word 7- ulpStatus */
122 uint32_t result; /* From IOCB Word 4. */
123
124 uint32_t seg_cnt; /* Number of scatter-gather segments returned by
125 * dma_map_sg. The driver needs this for calls
126 * to dma_unmap_sg. */
127 uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */
128
129 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */
130
131 /*
132 * data and dma_handle are the kernel virutal and bus address of the
133 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
134 * gather bde list that supports the sg_tablesize value.
135 */
136 void *data;
137 dma_addr_t dma_handle;
138
139 struct fcp_cmnd *fcp_cmnd;
140 struct fcp_rsp *fcp_rsp;
141 struct ulp_bde64 *fcp_bpl;
142
143 dma_addr_t dma_phys_bpl;
144
145 /* cur_iocbq has phys of the dma-able buffer.
146 * Iotag is in here
147 */
148 struct lpfc_iocbq cur_iocbq;
149 wait_queue_head_t *waitq;
150 unsigned long start_time;
151 };
152
153 #define LPFC_SCSI_DMA_EXT_SIZE 264
154 #define LPFC_BPL_SIZE 1024
155
156 #define MDAC_DIRECT_CMD 0x22
157
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