1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2006 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 25 #define list_remove_head(list, entry, type, member) \ 26 do { \ 27 entry = NULL; \ 28 if (!list_empty(list)) { \ 29 entry = list_entry((list)->next, type, member); \ 30 list_del_init(&entry->member); \ 31 } \ 32 } while(0) 33 34 #define list_get_first(list, type, member) \ 35 (list_empty(list)) ? NULL : \ 36 list_entry((list)->next, type, member) 37 38 /* per-port data that is allocated in the FC transport for us */ 39 struct lpfc_rport_data { 40 struct lpfc_nodelist *pnode; /* Pointer to the node structure. */ 41 }; 42 43 struct fcp_rsp { 44 uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */ 45 uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */ 46 47 uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */ 48 uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */ 49 uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */ 50 #define RSP_LEN_VALID 0x01 /* bit 0 */ 51 #define SNS_LEN_VALID 0x02 /* bit 1 */ 52 #define RESID_OVER 0x04 /* bit 2 */ 53 #define RESID_UNDER 0x08 /* bit 3 */ 54 uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */ 55 56 uint32_t rspResId; /* Residual xfer if residual count field set in 57 fcpStatus2 */ 58 /* Received in Big Endian format */ 59 uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */ 60 /* Received in Big Endian format */ 61 uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */ 62 /* Received in Big Endian format */ 63 64 uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */ 65 uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */ 66 uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */ 67 uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */ 68 69 #define RSP_NO_FAILURE 0x00 70 #define RSP_DATA_BURST_ERR 0x01 71 #define RSP_CMD_FIELD_ERR 0x02 72 #define RSP_RO_MISMATCH_ERR 0x03 73 #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */ 74 #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */ 75 76 uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */ 77 78 uint8_t rspSnsInfo[128]; 79 #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */ 80 #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */ 81 }; 82 83 struct fcp_cmnd { 84 struct scsi_lun fcp_lun; 85 86 uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */ 87 uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */ 88 #define SIMPLE_Q 0x00 89 #define HEAD_OF_Q 0x01 90 #define ORDERED_Q 0x02 91 #define ACA_Q 0x04 92 #define UNTAGGED 0x05 93 uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */ 94 #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */ 95 #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */ 96 #define FCP_BUS_RESET 0x08 /* bit 3 */ 97 #define FCP_LUN_RESET 0x10 /* bit 4 */ 98 #define FCP_TARGET_RESET 0x20 /* bit 5 */ 99 #define FCP_CLEAR_ACA 0x40 /* bit 6 */ 100 #define FCP_TERMINATE_TASK 0x80 /* bit 7 */ 101 uint8_t fcpCntl3; 102 #define WRITE_DATA 0x01 /* Bit 0 */ 103 #define READ_DATA 0x02 /* Bit 1 */ 104 105 uint8_t fcpCdb[16]; /* SRB cdb field is copied here */ 106 uint32_t fcpDl; /* Total transfer length */ 107 108 }; 109 110 struct lpfc_scsicmd_bkt { 111 uint32_t cmd_count; 112 }; 113 114 struct lpfc_scsi_buf { 115 struct list_head list; 116 struct scsi_cmnd *pCmd; 117 struct lpfc_rport_data *rdata; 118 119 uint32_t timeout; 120 121 uint16_t status; /* From IOCB Word 7- ulpStatus */ 122 uint32_t result; /* From IOCB Word 4. */ 123 124 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 125 * dma_map_sg. The driver needs this for calls 126 * to dma_unmap_sg. */ 127 uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */ 128 129 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 130 131 /* 132 * data and dma_handle are the kernel virutal and bus address of the 133 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 134 * gather bde list that supports the sg_tablesize value. 135 */ 136 void *data; 137 dma_addr_t dma_handle; 138 139 struct fcp_cmnd *fcp_cmnd; 140 struct fcp_rsp *fcp_rsp; 141 struct ulp_bde64 *fcp_bpl; 142 143 dma_addr_t dma_phys_bpl; 144 145 /* cur_iocbq has phys of the dma-able buffer. 146 * Iotag is in here 147 */ 148 struct lpfc_iocbq cur_iocbq; 149 wait_queue_head_t *waitq; 150 unsigned long start_time; 151 }; 152 153 #define LPFC_SCSI_DMA_EXT_SIZE 264 154 #define LPFC_BPL_SIZE 1024 155 156 #define MDAC_DIRECT_CMD 0x22 157