text: /*******************************************************************
   * This file is part of the Emulex Linux Device Driver for         *
   * Fibre Channel Host Bus Adapters.                                *
   * Copyright (C) 2004-2005 Emulex.  All rights reserved.           *
   * EMULEX and SLI are trademarks of Emulex.                        *
   * www.emulex.com                                                  *
   *                                                                 *
   * This program is free software; you can redistribute it and/or   *
   * modify it under the terms of version 2 of the GNU General       *
   * Public License as published by the Free Software Foundation.    *
   * This program is distributed in the hope that it will be useful. *
   * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
   * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
   * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
   * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
   * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
   * more details, a copy of which can be found in the file COPYING  *
   * included with this package.                                     *
   *******************************************************************/
  
  #include <asm/byteorder.h>
  
  struct lpfc_hba;
  
  #define list_remove_head(list, entry, type, member)		\
  	do {							\
  	entry = NULL;						\
  	if (!list_empty(list)) {				\
  		entry = list_entry((list)->next, type, member);	\
  		list_del_init(&entry->member);			\
  	}							\
  	} while(0)
  
  #define list_get_first(list, type, member)			\
  	(list_empty(list)) ? NULL :				\
  	list_entry((list)->next, type, member)
  
  /* per-port data that is allocated in the FC transport for us */
  struct lpfc_rport_data {
  	struct lpfc_nodelist *pnode;	/* Pointer to the node structure. */
  };
  
  struct fcp_rsp {
  	uint32_t rspRsvd1;	/* FC Word 0, byte 0:3 */
  	uint32_t rspRsvd2;	/* FC Word 1, byte 0:3 */
  
  	uint8_t rspStatus0;	/* FCP_STATUS byte 0 (reserved) */
  	uint8_t rspStatus1;	/* FCP_STATUS byte 1 (reserved) */
  	uint8_t rspStatus2;	/* FCP_STATUS byte 2 field validity */
  #define RSP_LEN_VALID  0x01	/* bit 0 */
  #define SNS_LEN_VALID  0x02	/* bit 1 */
  #define RESID_OVER     0x04	/* bit 2 */
  #define RESID_UNDER    0x08	/* bit 3 */
  	uint8_t rspStatus3;	/* FCP_STATUS byte 3 SCSI status byte */
  
  	uint32_t rspResId;	/* Residual xfer if residual count field set in
  				   fcpStatus2 */
  	/* Received in Big Endian format */
  	uint32_t rspSnsLen;	/* Length of sense data in fcpSnsInfo */
  	/* Received in Big Endian format */
  	uint32_t rspRspLen;	/* Length of FCP response data in fcpRspInfo */
  	/* Received in Big Endian format */
  
  	uint8_t rspInfo0;	/* FCP_RSP_INFO byte 0 (reserved) */
  	uint8_t rspInfo1;	/* FCP_RSP_INFO byte 1 (reserved) */
  	uint8_t rspInfo2;	/* FCP_RSP_INFO byte 2 (reserved) */
  	uint8_t rspInfo3;	/* FCP_RSP_INFO RSP_CODE byte 3 */
  
  #define RSP_NO_FAILURE       0x00
  #define RSP_DATA_BURST_ERR   0x01
  #define RSP_CMD_FIELD_ERR    0x02
  #define RSP_RO_MISMATCH_ERR  0x03
  #define RSP_TM_NOT_SUPPORTED 0x04	/* Task mgmt function not supported */
  #define RSP_TM_NOT_COMPLETED 0x05	/* Task mgmt function not performed */
  
  	uint32_t rspInfoRsvd;	/* FCP_RSP_INFO bytes 4-7 (reserved) */
  
  	uint8_t rspSnsInfo[128];
  #define SNS_ILLEGAL_REQ 0x05	/* sense key is byte 3 ([2]) */
  #define SNSCOD_BADCMD 0x20	/* sense code is byte 13 ([12]) */
  };
  
  struct fcp_cmnd {
  	struct scsi_lun  fcp_lun;
  
  	uint8_t fcpCntl0;	/* FCP_CNTL byte 0 (reserved) */
  	uint8_t fcpCntl1;	/* FCP_CNTL byte 1 task codes */
  #define  SIMPLE_Q        0x00
  #define  HEAD_OF_Q       0x01
  #define  ORDERED_Q       0x02
  #define  ACA_Q           0x04
  #define  UNTAGGED        0x05
  	uint8_t fcpCntl2;	/* FCP_CTL byte 2 task management codes */
  #define  FCP_ABORT_TASK_SET  0x02	/* Bit 1 */
  #define  FCP_CLEAR_TASK_SET  0x04	/* bit 2 */
  #define  FCP_BUS_RESET       0x08	/* bit 3 */
  #define  FCP_LUN_RESET       0x10	/* bit 4 */
  #define  FCP_TARGET_RESET    0x20	/* bit 5 */
  #define  FCP_CLEAR_ACA       0x40	/* bit 6 */
  #define  FCP_TERMINATE_TASK  0x80	/* bit 7 */
  	uint8_t fcpCntl3;
  #define  WRITE_DATA      0x01	/* Bit 0 */
  #define  READ_DATA       0x02	/* Bit 1 */
  
  	uint8_t fcpCdb[16];	/* SRB cdb field is copied here */
  	uint32_t fcpDl;		/* Total transfer length */
  
  };
  
  struct lpfc_scsi_buf {
  	struct list_head list;
  	struct scsi_cmnd *pCmd;
  	struct lpfc_hba *scsi_hba;
  	struct lpfc_rport_data *rdata;
  
  	uint32_t timeout;
  
  	uint16_t status;	/* From IOCB Word 7- ulpStatus */
  	uint32_t result;	/* From IOCB Word 4. */
  
  	uint32_t   seg_cnt;	/* Number of scatter-gather segments returned by
  				 * dma_map_sg.  The driver needs this for calls
  				 * to dma_unmap_sg. */
  	dma_addr_t nonsg_phys;	/* Non scatter-gather physical address. */
  
  	/*
  	 * data and dma_handle are the kernel virutal and bus address of the
  	 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
  	 * gather bde list that supports the sg_tablesize value.
  	 */
  	void *data;
  	dma_addr_t dma_handle;
  
  	struct fcp_cmnd *fcp_cmnd;
  	struct fcp_rsp *fcp_rsp;
  	struct ulp_bde64 *fcp_bpl;
  
  	/* cur_iocbq has phys of the dma-able buffer.
  	 * Iotag is in here
  	 */
  	struct lpfc_iocbq cur_iocbq;
  };
  
  #define LPFC_SCSI_DMA_EXT_SIZE 264
  #define LPFC_BPL_SIZE          1024
  
  #define MDAC_DIRECT_CMD                  0x22
  