1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * * 10 * This program is free software; you can redistribute it and/or * 11 * modify it under the terms of version 2 of the GNU General * 12 * Public License as published by the Free Software Foundation. * 13 * This program is distributed in the hope that it will be useful. * 14 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 15 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 16 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 17 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 18 * TO BE LEGALLY INVALID. See the GNU General Public License for * 19 * more details, a copy of which can be found in the file COPYING * 20 * included with this package. * 21 *******************************************************************/ 22 23 #include <asm/byteorder.h> 24 25 struct lpfc_hba; 26 #define LPFC_FCP_CDB_LEN 16 27 28 #define list_remove_head(list, entry, type, member) \ 29 do { \ 30 entry = NULL; \ 31 if (!list_empty(list)) { \ 32 entry = list_entry((list)->next, type, member); \ 33 list_del_init(&entry->member); \ 34 } \ 35 } while(0) 36 37 #define list_get_first(list, type, member) \ 38 (list_empty(list)) ? NULL : \ 39 list_entry((list)->next, type, member) 40 41 /* per-port data that is allocated in the FC transport for us */ 42 struct lpfc_rport_data { 43 struct lpfc_nodelist *pnode; /* Pointer to the node structure. */ 44 }; 45 46 struct lpfc_device_id { 47 struct lpfc_name vport_wwpn; 48 struct lpfc_name target_wwpn; 49 uint64_t lun; 50 }; 51 52 struct lpfc_device_data { 53 struct list_head listentry; 54 struct lpfc_rport_data *rport_data; 55 struct lpfc_device_id device_id; 56 uint8_t priority; 57 bool oas_enabled; 58 bool available; 59 }; 60 61 struct fcp_rsp { 62 uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */ 63 uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */ 64 65 uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */ 66 uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */ 67 uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */ 68 #define RSP_LEN_VALID 0x01 /* bit 0 */ 69 #define SNS_LEN_VALID 0x02 /* bit 1 */ 70 #define RESID_OVER 0x04 /* bit 2 */ 71 #define RESID_UNDER 0x08 /* bit 3 */ 72 uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */ 73 74 uint32_t rspResId; /* Residual xfer if residual count field set in 75 fcpStatus2 */ 76 /* Received in Big Endian format */ 77 uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */ 78 /* Received in Big Endian format */ 79 uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */ 80 /* Received in Big Endian format */ 81 82 uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */ 83 uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */ 84 uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */ 85 uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */ 86 87 #define RSP_NO_FAILURE 0x00 88 #define RSP_DATA_BURST_ERR 0x01 89 #define RSP_CMD_FIELD_ERR 0x02 90 #define RSP_RO_MISMATCH_ERR 0x03 91 #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */ 92 #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */ 93 #define RSP_TM_INVALID_LU 0x09 /* Task mgmt function to invalid LU */ 94 95 uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */ 96 97 uint8_t rspSnsInfo[128]; 98 #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */ 99 #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */ 100 }; 101 102 struct fcp_cmnd { 103 struct scsi_lun fcp_lun; 104 105 uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */ 106 uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */ 107 #define SIMPLE_Q 0x00 108 #define HEAD_OF_Q 0x01 109 #define ORDERED_Q 0x02 110 #define ACA_Q 0x04 111 #define UNTAGGED 0x05 112 uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */ 113 #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */ 114 #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */ 115 #define FCP_BUS_RESET 0x08 /* bit 3 */ 116 #define FCP_LUN_RESET 0x10 /* bit 4 */ 117 #define FCP_TARGET_RESET 0x20 /* bit 5 */ 118 #define FCP_CLEAR_ACA 0x40 /* bit 6 */ 119 #define FCP_TERMINATE_TASK 0x80 /* bit 7 */ 120 uint8_t fcpCntl3; 121 #define WRITE_DATA 0x01 /* Bit 0 */ 122 #define READ_DATA 0x02 /* Bit 1 */ 123 124 uint8_t fcpCdb[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */ 125 uint32_t fcpDl; /* Total transfer length */ 126 127 }; 128 129 struct lpfc_scsicmd_bkt { 130 uint32_t cmd_count; 131 }; 132 133 struct lpfc_scsi_buf { 134 struct list_head list; 135 struct scsi_cmnd *pCmd; 136 struct lpfc_rport_data *rdata; 137 138 uint32_t timeout; 139 140 uint16_t flags; /* TBD convert exch_busy to flags */ 141 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ 142 uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ 143 uint16_t status; /* From IOCB Word 7- ulpStatus */ 144 uint32_t result; /* From IOCB Word 4. */ 145 146 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 147 * dma_map_sg. The driver needs this for calls 148 * to dma_unmap_sg. */ 149 uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */ 150 151 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 152 153 /* 154 * data and dma_handle are the kernel virtual and bus address of the 155 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 156 * gather bde list that supports the sg_tablesize value. 157 */ 158 void *data; 159 dma_addr_t dma_handle; 160 161 struct fcp_cmnd *fcp_cmnd; 162 struct fcp_rsp *fcp_rsp; 163 struct ulp_bde64 *fcp_bpl; 164 165 dma_addr_t dma_phys_bpl; 166 167 /* cur_iocbq has phys of the dma-able buffer. 168 * Iotag is in here 169 */ 170 struct lpfc_iocbq cur_iocbq; 171 uint16_t cpu; 172 173 wait_queue_head_t *waitq; 174 unsigned long start_time; 175 176 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 177 /* Used to restore any changes to protection data for error injection */ 178 void *prot_data_segment; 179 uint32_t prot_data; 180 uint32_t prot_data_type; 181 #define LPFC_INJERR_REFTAG 1 182 #define LPFC_INJERR_APPTAG 2 183 #define LPFC_INJERR_GUARD 3 184 #endif 185 }; 186 187 #define LPFC_SCSI_DMA_EXT_SIZE 264 188 #define LPFC_BPL_SIZE 1024 189 #define MDAC_DIRECT_CMD 0x22 190 191 #define FIND_FIRST_OAS_LUN 0 192 #define NO_MORE_OAS_LUN -1 193 #define NOT_OAS_ENABLED_LUN NO_MORE_OAS_LUN 194 195 #define TXRDY_PAYLOAD_LEN 12 196 197 int lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba, 198 struct lpfc_scsi_buf *lpfc_cmd); 199