1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2005 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 if (!list_empty(list)) { \ 27 entry = list_entry((list)->next, type, member); \ 28 list_del_init(&entry->member); \ 29 } 30 31 #define list_get_first(list, type, member) \ 32 (list_empty(list)) ? NULL : \ 33 list_entry((list)->next, type, member) 34 35 /* per-port data that is allocated in the FC transport for us */ 36 struct lpfc_rport_data { 37 struct lpfc_nodelist *pnode; /* Pointer to the node structure. */ 38 }; 39 40 struct fcp_rsp { 41 uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */ 42 uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */ 43 44 uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */ 45 uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */ 46 uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */ 47 #define RSP_LEN_VALID 0x01 /* bit 0 */ 48 #define SNS_LEN_VALID 0x02 /* bit 1 */ 49 #define RESID_OVER 0x04 /* bit 2 */ 50 #define RESID_UNDER 0x08 /* bit 3 */ 51 uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */ 52 53 uint32_t rspResId; /* Residual xfer if residual count field set in 54 fcpStatus2 */ 55 /* Received in Big Endian format */ 56 uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */ 57 /* Received in Big Endian format */ 58 uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */ 59 /* Received in Big Endian format */ 60 61 uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */ 62 uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */ 63 uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */ 64 uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */ 65 66 #define RSP_NO_FAILURE 0x00 67 #define RSP_DATA_BURST_ERR 0x01 68 #define RSP_CMD_FIELD_ERR 0x02 69 #define RSP_RO_MISMATCH_ERR 0x03 70 #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */ 71 #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */ 72 73 uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */ 74 75 uint8_t rspSnsInfo[128]; 76 #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */ 77 #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */ 78 }; 79 80 struct fcp_cmnd { 81 struct scsi_lun fcp_lun; 82 83 uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */ 84 uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */ 85 #define SIMPLE_Q 0x00 86 #define HEAD_OF_Q 0x01 87 #define ORDERED_Q 0x02 88 #define ACA_Q 0x04 89 #define UNTAGGED 0x05 90 uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */ 91 #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */ 92 #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */ 93 #define FCP_BUS_RESET 0x08 /* bit 3 */ 94 #define FCP_LUN_RESET 0x10 /* bit 4 */ 95 #define FCP_TARGET_RESET 0x20 /* bit 5 */ 96 #define FCP_CLEAR_ACA 0x40 /* bit 6 */ 97 #define FCP_TERMINATE_TASK 0x80 /* bit 7 */ 98 uint8_t fcpCntl3; 99 #define WRITE_DATA 0x01 /* Bit 0 */ 100 #define READ_DATA 0x02 /* Bit 1 */ 101 102 uint8_t fcpCdb[16]; /* SRB cdb field is copied here */ 103 uint32_t fcpDl; /* Total transfer length */ 104 105 }; 106 107 struct lpfc_scsi_buf { 108 struct list_head list; 109 struct scsi_cmnd *pCmd; 110 struct lpfc_hba *scsi_hba; 111 struct lpfc_rport_data *rdata; 112 113 uint32_t timeout; 114 115 uint16_t status; /* From IOCB Word 7- ulpStatus */ 116 uint32_t result; /* From IOCB Word 4. */ 117 118 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 119 * dma_map_sg. The driver needs this for calls 120 * to dma_unmap_sg. */ 121 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 122 123 /* 124 * data and dma_handle are the kernel virutal and bus address of the 125 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 126 * gather bde list that supports the sg_tablesize value. 127 */ 128 void *data; 129 dma_addr_t dma_handle; 130 131 struct fcp_cmnd *fcp_cmnd; 132 struct fcp_rsp *fcp_rsp; 133 struct ulp_bde64 *fcp_bpl; 134 135 /* cur_iocbq has phys of the dma-able buffer. 136 * Iotag is in here 137 */ 138 struct lpfc_iocbq cur_iocbq; 139 }; 140 141 #define LPFC_SCSI_DMA_EXT_SIZE 264 142 #define LPFC_BPL_SIZE 1024 143 144 #define MDAC_DIRECT_CMD 0x22 145