forked from Minki/linux
c92c841cc7
Add support for XLane LUN priority Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
191 lines
6.3 KiB
C
191 lines
6.3 KiB
C
/*******************************************************************
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* This file is part of the Emulex Linux Device Driver for *
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* Fibre Channel Host Bus Adapters. *
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* Copyright (C) 2004-2015 Emulex. All rights reserved. *
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* EMULEX and SLI are trademarks of Emulex. *
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* www.emulex.com *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of version 2 of the GNU General *
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* Public License as published by the Free Software Foundation. *
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* This program is distributed in the hope that it will be useful. *
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* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
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* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
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* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
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* TO BE LEGALLY INVALID. See the GNU General Public License for *
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* more details, a copy of which can be found in the file COPYING *
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* included with this package. *
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*******************************************************************/
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#include <asm/byteorder.h>
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struct lpfc_hba;
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#define LPFC_FCP_CDB_LEN 16
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#define list_remove_head(list, entry, type, member) \
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do { \
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entry = NULL; \
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if (!list_empty(list)) { \
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entry = list_entry((list)->next, type, member); \
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list_del_init(&entry->member); \
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} \
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} while(0)
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#define list_get_first(list, type, member) \
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(list_empty(list)) ? NULL : \
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list_entry((list)->next, type, member)
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/* per-port data that is allocated in the FC transport for us */
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struct lpfc_rport_data {
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struct lpfc_nodelist *pnode; /* Pointer to the node structure. */
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};
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struct lpfc_device_id {
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struct lpfc_name vport_wwpn;
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struct lpfc_name target_wwpn;
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uint64_t lun;
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};
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struct lpfc_device_data {
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struct list_head listentry;
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struct lpfc_rport_data *rport_data;
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struct lpfc_device_id device_id;
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uint8_t priority;
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bool oas_enabled;
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bool available;
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};
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struct fcp_rsp {
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uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */
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uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */
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uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */
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uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */
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uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */
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#define RSP_LEN_VALID 0x01 /* bit 0 */
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#define SNS_LEN_VALID 0x02 /* bit 1 */
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#define RESID_OVER 0x04 /* bit 2 */
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#define RESID_UNDER 0x08 /* bit 3 */
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uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */
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uint32_t rspResId; /* Residual xfer if residual count field set in
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fcpStatus2 */
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/* Received in Big Endian format */
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uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */
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/* Received in Big Endian format */
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uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */
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/* Received in Big Endian format */
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uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */
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uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */
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uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */
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uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */
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#define RSP_NO_FAILURE 0x00
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#define RSP_DATA_BURST_ERR 0x01
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#define RSP_CMD_FIELD_ERR 0x02
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#define RSP_RO_MISMATCH_ERR 0x03
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#define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */
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#define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */
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#define RSP_TM_INVALID_LU 0x09 /* Task mgmt function to invalid LU */
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uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */
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uint8_t rspSnsInfo[128];
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#define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */
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#define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */
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};
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struct fcp_cmnd {
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struct scsi_lun fcp_lun;
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uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */
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uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */
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#define SIMPLE_Q 0x00
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#define HEAD_OF_Q 0x01
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#define ORDERED_Q 0x02
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#define ACA_Q 0x04
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#define UNTAGGED 0x05
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uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */
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#define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */
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#define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */
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#define FCP_BUS_RESET 0x08 /* bit 3 */
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#define FCP_LUN_RESET 0x10 /* bit 4 */
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#define FCP_TARGET_RESET 0x20 /* bit 5 */
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#define FCP_CLEAR_ACA 0x40 /* bit 6 */
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#define FCP_TERMINATE_TASK 0x80 /* bit 7 */
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uint8_t fcpCntl3;
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#define WRITE_DATA 0x01 /* Bit 0 */
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#define READ_DATA 0x02 /* Bit 1 */
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uint8_t fcpCdb[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */
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uint32_t fcpDl; /* Total transfer length */
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};
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struct lpfc_scsicmd_bkt {
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uint32_t cmd_count;
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};
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struct lpfc_scsi_buf {
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struct list_head list;
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struct scsi_cmnd *pCmd;
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struct lpfc_rport_data *rdata;
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uint32_t timeout;
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uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */
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uint16_t status; /* From IOCB Word 7- ulpStatus */
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uint32_t result; /* From IOCB Word 4. */
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uint32_t seg_cnt; /* Number of scatter-gather segments returned by
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* dma_map_sg. The driver needs this for calls
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* to dma_unmap_sg. */
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uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */
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dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */
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/*
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* data and dma_handle are the kernel virtual and bus address of the
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* dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
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* gather bde list that supports the sg_tablesize value.
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*/
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void *data;
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dma_addr_t dma_handle;
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struct fcp_cmnd *fcp_cmnd;
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struct fcp_rsp *fcp_rsp;
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struct ulp_bde64 *fcp_bpl;
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dma_addr_t dma_phys_bpl;
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/* cur_iocbq has phys of the dma-able buffer.
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* Iotag is in here
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*/
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struct lpfc_iocbq cur_iocbq;
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wait_queue_head_t *waitq;
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unsigned long start_time;
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#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
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/* Used to restore any changes to protection data for error injection */
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void *prot_data_segment;
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uint32_t prot_data;
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uint32_t prot_data_type;
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#define LPFC_INJERR_REFTAG 1
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#define LPFC_INJERR_APPTAG 2
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#define LPFC_INJERR_GUARD 3
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#endif
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};
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#define LPFC_SCSI_DMA_EXT_SIZE 264
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#define LPFC_BPL_SIZE 1024
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#define MDAC_DIRECT_CMD 0x22
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#define FIND_FIRST_OAS_LUN 0
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#define NO_MORE_OAS_LUN -1
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#define NOT_OAS_ENABLED_LUN NO_MORE_OAS_LUN
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int lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba,
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struct lpfc_scsi_buf *lpfc_cmd);
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