/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2013 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 LPFC_FCP_CDB_LEN 16
#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 */
#define RSP_TM_INVALID_LU 0x09 /* Task mgmt function to invalid LU */
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[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */
uint32_t fcpDl; /* Total transfer length */
};
struct lpfc_scsicmd_bkt {
uint32_t cmd_count;
};
struct lpfc_scsi_buf {
struct list_head list;
struct scsi_cmnd *pCmd;
struct lpfc_rport_data *rdata;
uint32_t timeout;
uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */
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. */
uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */
dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */
/*
* data and dma_handle are the kernel virtual 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;
dma_addr_t dma_phys_bpl;
/* cur_iocbq has phys of the dma-able buffer.
* Iotag is in here
*/
struct lpfc_iocbq cur_iocbq;
wait_queue_head_t *waitq;
unsigned long start_time;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
/* Used to restore any changes to protection data for error injection */
void *prot_data_segment;
uint32_t prot_data;
uint32_t prot_data_type;
#define LPFC_INJERR_REFTAG 1
#define LPFC_INJERR_APPTAG 2
#define LPFC_INJERR_GUARD 3
#endif
};
#define LPFC_SCSI_DMA_EXT_SIZE 264
#define LPFC_BPL_SIZE 1024
#define MDAC_DIRECT_CMD 0x22