2e0fef85e0
The driver is reorganized to separate the handling of the adapter from the handling of the FC port. Adapter handling includes submissions of command requests, receiving responses, and managing adapter resources. The FC port includes the discovery engine, login handling, and the mapping of a Scsi_Host on the "port". Although not a large functional change, as it touches core structures and functions, resulting in a large text delta. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
146 lines
5.2 KiB
C
146 lines
5.2 KiB
C
/*******************************************************************
|
|
* This file is part of the Emulex Linux Device Driver for *
|
|
* Fibre Channel Host Bus Adapters. *
|
|
* Copyright (C) 2004-2006 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_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
|