1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2016 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 #define LPFC_FCP_CDB_LEN 16 25 26 #define list_remove_head(list, entry, type, member) \ 27 do { \ 28 entry = NULL; \ 29 if (!list_empty(list)) { \ 30 entry = list_entry((list)->next, type, member); \ 31 list_del_init(&entry->member); \ 32 } \ 33 } while(0) 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 lpfc_device_id { 45 struct lpfc_name vport_wwpn; 46 struct lpfc_name target_wwpn; 47 uint64_t lun; 48 }; 49 50 struct lpfc_device_data { 51 struct list_head listentry; 52 struct lpfc_rport_data *rport_data; 53 struct lpfc_device_id device_id; 54 uint8_t priority; 55 bool oas_enabled; 56 bool available; 57 }; 58 59 struct fcp_rsp { 60 uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */ 61 uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */ 62 63 uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */ 64 uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */ 65 uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */ 66 #define RSP_LEN_VALID 0x01 /* bit 0 */ 67 #define SNS_LEN_VALID 0x02 /* bit 1 */ 68 #define RESID_OVER 0x04 /* bit 2 */ 69 #define RESID_UNDER 0x08 /* bit 3 */ 70 uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */ 71 72 uint32_t rspResId; /* Residual xfer if residual count field set in 73 fcpStatus2 */ 74 /* Received in Big Endian format */ 75 uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */ 76 /* Received in Big Endian format */ 77 uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */ 78 /* Received in Big Endian format */ 79 80 uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */ 81 uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */ 82 uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */ 83 uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */ 84 85 #define RSP_NO_FAILURE 0x00 86 #define RSP_DATA_BURST_ERR 0x01 87 #define RSP_CMD_FIELD_ERR 0x02 88 #define RSP_RO_MISMATCH_ERR 0x03 89 #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */ 90 #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */ 91 #define RSP_TM_INVALID_LU 0x09 /* Task mgmt function to invalid LU */ 92 93 uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */ 94 95 uint8_t rspSnsInfo[128]; 96 #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */ 97 #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */ 98 }; 99 100 struct fcp_cmnd { 101 struct scsi_lun fcp_lun; 102 103 uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */ 104 uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */ 105 #define SIMPLE_Q 0x00 106 #define HEAD_OF_Q 0x01 107 #define ORDERED_Q 0x02 108 #define ACA_Q 0x04 109 #define UNTAGGED 0x05 110 uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */ 111 #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */ 112 #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */ 113 #define FCP_BUS_RESET 0x08 /* bit 3 */ 114 #define FCP_LUN_RESET 0x10 /* bit 4 */ 115 #define FCP_TARGET_RESET 0x20 /* bit 5 */ 116 #define FCP_CLEAR_ACA 0x40 /* bit 6 */ 117 #define FCP_TERMINATE_TASK 0x80 /* bit 7 */ 118 uint8_t fcpCntl3; 119 #define WRITE_DATA 0x01 /* Bit 0 */ 120 #define READ_DATA 0x02 /* Bit 1 */ 121 122 uint8_t fcpCdb[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */ 123 uint32_t fcpDl; /* Total transfer length */ 124 125 }; 126 127 struct lpfc_scsicmd_bkt { 128 uint32_t cmd_count; 129 }; 130 131 struct lpfc_scsi_buf { 132 struct list_head list; 133 struct scsi_cmnd *pCmd; 134 struct lpfc_rport_data *rdata; 135 136 uint32_t timeout; 137 138 uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ 139 uint16_t status; /* From IOCB Word 7- ulpStatus */ 140 uint32_t result; /* From IOCB Word 4. */ 141 142 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 143 * dma_map_sg. The driver needs this for calls 144 * to dma_unmap_sg. */ 145 uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */ 146 147 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 148 149 /* 150 * data and dma_handle are the kernel virtual and bus address of the 151 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 152 * gather bde list that supports the sg_tablesize value. 153 */ 154 void *data; 155 dma_addr_t dma_handle; 156 157 struct fcp_cmnd *fcp_cmnd; 158 struct fcp_rsp *fcp_rsp; 159 struct ulp_bde64 *fcp_bpl; 160 161 dma_addr_t dma_phys_bpl; 162 163 /* cur_iocbq has phys of the dma-able buffer. 164 * Iotag is in here 165 */ 166 struct lpfc_iocbq cur_iocbq; 167 wait_queue_head_t *waitq; 168 unsigned long start_time; 169 170 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 171 /* Used to restore any changes to protection data for error injection */ 172 void *prot_data_segment; 173 uint32_t prot_data; 174 uint32_t prot_data_type; 175 #define LPFC_INJERR_REFTAG 1 176 #define LPFC_INJERR_APPTAG 2 177 #define LPFC_INJERR_GUARD 3 178 #endif 179 }; 180 181 #define LPFC_SCSI_DMA_EXT_SIZE 264 182 #define LPFC_BPL_SIZE 1024 183 #define MDAC_DIRECT_CMD 0x22 184 185 #define FIND_FIRST_OAS_LUN 0 186 #define NO_MORE_OAS_LUN -1 187 #define NOT_OAS_ENABLED_LUN NO_MORE_OAS_LUN 188 189 int lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba, 190 struct lpfc_scsi_buf *lpfc_cmd); 191