1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Enterprise Fibre Channel Host Bus Adapters. * 4 * Refer to the README file included with this package for * 5 * driver version and adapter support. * 6 * Copyright (C) 2004 Emulex Corporation. * 7 * www.emulex.com * 8 * * 9 * This program is free software; you can redistribute it and/or * 10 * modify it under the terms of the GNU General Public License * 11 * as published by the Free Software Foundation; either version 2 * 12 * of the License, or (at your option) any later version. * 13 * * 14 * This program is distributed in the hope that it will be useful, * 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 17 * GNU General Public License for more details, a copy of which * 18 * can be found in the file COPYING included with this package. * 19 *******************************************************************/ 20 21 /* 22 * $Id: lpfc_scsi.h 1.83 2005/04/07 08:47:43EDT sf_support Exp $ 23 */ 24 25 struct lpfc_hba; 26 27 #define list_remove_head(list, entry, type, member) \ 28 if (!list_empty(list)) { \ 29 entry = list_entry((list)->next, type, member); \ 30 list_del_init(&entry->member); \ 31 } 32 33 #define list_get_first(list, type, member) \ 34 (list_empty(list)) ? NULL : \ 35 list_entry((list)->next, type, member) 36 37 /* per-port data that is allocated in the FC transport for us */ 38 struct lpfc_rport_data { 39 struct lpfc_nodelist *pnode; /* Pointer to the node structure. */ 40 }; 41 42 struct fcp_rsp { 43 uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */ 44 uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */ 45 46 uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */ 47 uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */ 48 uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */ 49 #define RSP_LEN_VALID 0x01 /* bit 0 */ 50 #define SNS_LEN_VALID 0x02 /* bit 1 */ 51 #define RESID_OVER 0x04 /* bit 2 */ 52 #define RESID_UNDER 0x08 /* bit 3 */ 53 uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */ 54 55 uint32_t rspResId; /* Residual xfer if residual count field set in 56 fcpStatus2 */ 57 /* Received in Big Endian format */ 58 uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */ 59 /* Received in Big Endian format */ 60 uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */ 61 /* Received in Big Endian format */ 62 63 uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */ 64 uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */ 65 uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */ 66 uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */ 67 68 #define RSP_NO_FAILURE 0x00 69 #define RSP_DATA_BURST_ERR 0x01 70 #define RSP_CMD_FIELD_ERR 0x02 71 #define RSP_RO_MISMATCH_ERR 0x03 72 #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */ 73 #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */ 74 75 uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */ 76 77 uint8_t rspSnsInfo[128]; 78 #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */ 79 #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */ 80 }; 81 82 struct fcp_cmnd { 83 uint32_t fcpLunMsl; /* most significant lun word (32 bits) */ 84 uint32_t fcpLunLsl; /* least significant lun word (32 bits) */ 85 /* # of bits to shift lun id to end up in right 86 * payload word, little endian = 8, big = 16. 87 */ 88 #if __BIG_ENDIAN 89 #define FC_LUN_SHIFT 16 90 #define FC_ADDR_MODE_SHIFT 24 91 #else /* __LITTLE_ENDIAN */ 92 #define FC_LUN_SHIFT 8 93 #define FC_ADDR_MODE_SHIFT 0 94 #endif 95 96 uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */ 97 uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */ 98 #define SIMPLE_Q 0x00 99 #define HEAD_OF_Q 0x01 100 #define ORDERED_Q 0x02 101 #define ACA_Q 0x04 102 #define UNTAGGED 0x05 103 uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */ 104 #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */ 105 #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */ 106 #define FCP_BUS_RESET 0x08 /* bit 3 */ 107 #define FCP_LUN_RESET 0x10 /* bit 4 */ 108 #define FCP_TARGET_RESET 0x20 /* bit 5 */ 109 #define FCP_CLEAR_ACA 0x40 /* bit 6 */ 110 #define FCP_TERMINATE_TASK 0x80 /* bit 7 */ 111 uint8_t fcpCntl3; 112 #define WRITE_DATA 0x01 /* Bit 0 */ 113 #define READ_DATA 0x02 /* Bit 1 */ 114 115 uint8_t fcpCdb[16]; /* SRB cdb field is copied here */ 116 uint32_t fcpDl; /* Total transfer length */ 117 118 }; 119 120 struct lpfc_scsi_buf { 121 struct list_head list; 122 struct scsi_cmnd *pCmd; 123 struct lpfc_hba *scsi_hba; 124 struct lpfc_rport_data *rdata; 125 126 uint32_t timeout; 127 128 uint16_t status; /* From IOCB Word 7- ulpStatus */ 129 uint32_t result; /* From IOCB Word 4. */ 130 131 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 132 * dma_map_sg. The driver needs this for calls 133 * to dma_unmap_sg. */ 134 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 135 136 /* 137 * data and dma_handle are the kernel virutal and bus address of the 138 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 139 * gather bde list that supports the sg_tablesize value. 140 */ 141 void *data; 142 dma_addr_t dma_handle; 143 144 struct fcp_cmnd *fcp_cmnd; 145 struct fcp_rsp *fcp_rsp; 146 struct ulp_bde64 *fcp_bpl; 147 148 /* cur_iocbq has phys of the dma-able buffer. 149 * Iotag is in here 150 */ 151 struct lpfc_iocbq cur_iocbq; 152 }; 153 154 #define LPFC_SCSI_DMA_EXT_SIZE 264 155 #define LPFC_BPL_SIZE 1024 156 157 #define MDAC_DIRECT_CMD 0x22 158