1/******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2012 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 23struct 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 */ 40struct lpfc_rport_data { 41 struct lpfc_nodelist *pnode; /* Pointer to the node structure. */ 42}; 43 44struct fcp_rsp { 45 uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */ 46 uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */ 47 48 uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */ 49 uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */ 50 uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */ 51#define RSP_LEN_VALID 0x01 /* bit 0 */ 52#define SNS_LEN_VALID 0x02 /* bit 1 */ 53#define RESID_OVER 0x04 /* bit 2 */ 54#define RESID_UNDER 0x08 /* bit 3 */ 55 uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */ 56 57 uint32_t rspResId; /* Residual xfer if residual count field set in 58 fcpStatus2 */ 59 /* Received in Big Endian format */ 60 uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */ 61 /* Received in Big Endian format */ 62 uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */ 63 /* Received in Big Endian format */ 64 65 uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */ 66 uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */ 67 uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */ 68 uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */ 69 70#define RSP_NO_FAILURE 0x00 71#define RSP_DATA_BURST_ERR 0x01 72#define RSP_CMD_FIELD_ERR 0x02 73#define RSP_RO_MISMATCH_ERR 0x03 74#define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */ 75#define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */ 76 77 uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */ 78 79 uint8_t rspSnsInfo[128]; 80#define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */ 81#define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */ 82}; 83 84struct fcp_cmnd { 85 struct scsi_lun fcp_lun; 86 87 uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */ 88 uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */ 89#define SIMPLE_Q 0x00 90#define HEAD_OF_Q 0x01 91#define ORDERED_Q 0x02 92#define ACA_Q 0x04 93#define UNTAGGED 0x05 94 uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */ 95#define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */ 96#define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */ 97#define FCP_BUS_RESET 0x08 /* bit 3 */ 98#define FCP_LUN_RESET 0x10 /* bit 4 */ 99#define FCP_TARGET_RESET 0x20 /* bit 5 */ 100#define FCP_CLEAR_ACA 0x40 /* bit 6 */ 101#define FCP_TERMINATE_TASK 0x80 /* bit 7 */ 102 uint8_t fcpCntl3; 103#define WRITE_DATA 0x01 /* Bit 0 */ 104#define READ_DATA 0x02 /* Bit 1 */ 105 106 uint8_t fcpCdb[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */ 107 uint32_t fcpDl; /* Total transfer length */ 108 109}; 110 111struct lpfc_scsicmd_bkt { 112 uint32_t cmd_count; 113}; 114 115struct lpfc_scsi_buf { 116 struct list_head list; 117 struct scsi_cmnd *pCmd; 118 struct lpfc_rport_data *rdata; 119 120 uint32_t timeout; 121 122 uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ 123 uint16_t status; /* From IOCB Word 7- ulpStatus */ 124 uint32_t result; /* From IOCB Word 4. */ 125 126 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 127 * dma_map_sg. The driver needs this for calls 128 * to dma_unmap_sg. */ 129 uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */ 130 131 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 132 133 /* 134 * data and dma_handle are the kernel virtual and bus address of the 135 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 136 * gather bde list that supports the sg_tablesize value. 137 */ 138 void *data; 139 dma_addr_t dma_handle; 140 141 struct fcp_cmnd *fcp_cmnd; 142 struct fcp_rsp *fcp_rsp; 143 struct ulp_bde64 *fcp_bpl; 144 145 dma_addr_t dma_phys_bpl; 146 147 /* cur_iocbq has phys of the dma-able buffer. 148 * Iotag is in here 149 */ 150 struct lpfc_iocbq cur_iocbq; 151 wait_queue_head_t *waitq; 152 unsigned long start_time; 153 154#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 155 /* Used to restore any changes to protection data for error injection */ 156 void *prot_data_segment; 157 uint32_t prot_data; 158 uint32_t prot_data_type; 159#define LPFC_INJERR_REFTAG 1 160#define LPFC_INJERR_APPTAG 2 161#define LPFC_INJERR_GUARD 3 162#endif 163}; 164 165#define LPFC_SCSI_DMA_EXT_SIZE 264 166#define LPFC_BPL_SIZE 1024 167#define MDAC_DIRECT_CMD 0x22 168