1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2005 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
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 *******************************************************************/
21 #include <asm/byteorder.h>
25 #define list_remove_head(list, entry, type, member) \
26 if (!list_empty(list)) { \
27 entry = list_entry((list)->next, type, member); \
28 list_del_init(&entry->member); \
31 #define list_get_first(list, type, member) \
32 (list_empty(list)) ? NULL : \
33 list_entry((list)->next, type, member)
35 /* per-port data that is allocated in the FC transport for us */
36 struct lpfc_rport_data {
37 struct lpfc_nodelist *pnode; /* Pointer to the node structure. */
41 uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */
42 uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */
44 uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */
45 uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */
46 uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */
47 #define RSP_LEN_VALID 0x01 /* bit 0 */
48 #define SNS_LEN_VALID 0x02 /* bit 1 */
49 #define RESID_OVER 0x04 /* bit 2 */
50 #define RESID_UNDER 0x08 /* bit 3 */
51 uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */
53 uint32_t rspResId; /* Residual xfer if residual count field set in
55 /* Received in Big Endian format */
56 uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */
57 /* Received in Big Endian format */
58 uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */
59 /* Received in Big Endian format */
61 uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */
62 uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */
63 uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */
64 uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */
66 #define RSP_NO_FAILURE 0x00
67 #define RSP_DATA_BURST_ERR 0x01
68 #define RSP_CMD_FIELD_ERR 0x02
69 #define RSP_RO_MISMATCH_ERR 0x03
70 #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */
71 #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */
73 uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */
75 uint8_t rspSnsInfo[128];
76 #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */
77 #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */
81 uint32_t fcpLunMsl; /* most significant lun word (32 bits) */
82 uint32_t fcpLunLsl; /* least significant lun word (32 bits) */
83 /* # of bits to shift lun id to end up in right
84 * payload word, little endian = 8, big = 16.
87 #define FC_LUN_SHIFT 16
88 #define FC_ADDR_MODE_SHIFT 24
89 #else /* __LITTLE_ENDIAN */
90 #define FC_LUN_SHIFT 8
91 #define FC_ADDR_MODE_SHIFT 0
94 uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */
95 uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */
97 #define HEAD_OF_Q 0x01
98 #define ORDERED_Q 0x02
100 #define UNTAGGED 0x05
101 uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */
102 #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */
103 #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */
104 #define FCP_BUS_RESET 0x08 /* bit 3 */
105 #define FCP_LUN_RESET 0x10 /* bit 4 */
106 #define FCP_TARGET_RESET 0x20 /* bit 5 */
107 #define FCP_CLEAR_ACA 0x40 /* bit 6 */
108 #define FCP_TERMINATE_TASK 0x80 /* bit 7 */
110 #define WRITE_DATA 0x01 /* Bit 0 */
111 #define READ_DATA 0x02 /* Bit 1 */
113 uint8_t fcpCdb[16]; /* SRB cdb field is copied here */
114 uint32_t fcpDl; /* Total transfer length */
118 struct lpfc_scsi_buf {
119 struct list_head list;
120 struct scsi_cmnd *pCmd;
121 struct lpfc_hba *scsi_hba;
122 struct lpfc_rport_data *rdata;
126 uint16_t status; /* From IOCB Word 7- ulpStatus */
127 uint32_t result; /* From IOCB Word 4. */
129 uint32_t seg_cnt; /* Number of scatter-gather segments returned by
130 * dma_map_sg. The driver needs this for calls
131 * to dma_unmap_sg. */
132 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */
135 * data and dma_handle are the kernel virutal and bus address of the
136 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
137 * gather bde list that supports the sg_tablesize value.
140 dma_addr_t dma_handle;
142 struct fcp_cmnd *fcp_cmnd;
143 struct fcp_rsp *fcp_rsp;
144 struct ulp_bde64 *fcp_bpl;
146 /* cur_iocbq has phys of the dma-able buffer.
149 struct lpfc_iocbq cur_iocbq;
152 #define LPFC_SCSI_DMA_EXT_SIZE 264
153 #define LPFC_BPL_SIZE 1024
155 #define MDAC_DIRECT_CMD 0x22