484 lines
17 KiB
C
484 lines
17 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) 2017-2022 Broadcom. All Rights Reserved. The term *
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* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
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* Copyright (C) 2004-2016 Emulex. All rights reserved. *
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* EMULEX and SLI are trademarks of Emulex. *
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* www.broadcom.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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#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_SCSI_LPFC_DEBUG_FS)
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#define CONFIG_SCSI_LPFC_DEBUG_FS
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#endif
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/* forward declaration for LPFC_IOCB_t's use */
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struct lpfc_hba;
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struct lpfc_vport;
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/* Define the context types that SLI handles for abort and sums. */
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typedef enum _lpfc_ctx_cmd {
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LPFC_CTX_LUN,
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LPFC_CTX_TGT,
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LPFC_CTX_HOST
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} lpfc_ctx_cmd;
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/* Enumeration to describe the thread lock context. */
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enum lpfc_mbox_ctx {
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MBOX_THD_UNLOCKED,
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MBOX_THD_LOCKED
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};
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union lpfc_vmid_tag {
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uint32_t app_id;
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uint8_t cs_ctl_vmid;
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struct lpfc_vmid_context *vmid_context; /* UVEM context information */
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};
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struct lpfc_cq_event {
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struct list_head list;
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uint16_t hdwq;
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union {
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struct lpfc_mcqe mcqe_cmpl;
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struct lpfc_acqe_link acqe_link;
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struct lpfc_acqe_fip acqe_fip;
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struct lpfc_acqe_dcbx acqe_dcbx;
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struct lpfc_acqe_grp5 acqe_grp5;
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struct lpfc_acqe_fc_la acqe_fc;
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struct lpfc_acqe_sli acqe_sli;
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struct lpfc_rcqe rcqe_cmpl;
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struct sli4_wcqe_xri_aborted wcqe_axri;
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struct lpfc_wcqe_complete wcqe_cmpl;
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} cqe;
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};
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/* This structure is used to handle IOCB requests / responses */
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struct lpfc_iocbq {
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/* lpfc_iocbqs are used in double linked lists */
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struct list_head list;
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struct list_head clist;
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struct list_head dlist;
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uint16_t iotag; /* pre-assigned IO tag */
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uint16_t sli4_lxritag; /* logical pre-assigned XRI. */
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uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */
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uint16_t hba_wqidx; /* index to HBA work queue */
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struct lpfc_cq_event cq_event;
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uint64_t isr_timestamp;
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union lpfc_wqe128 wqe; /* SLI-4 */
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IOCB_t iocb; /* SLI-3 */
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struct lpfc_wcqe_complete wcqe_cmpl; /* WQE cmpl */
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u32 unsol_rcv_len; /* Receive len in usol path */
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/* Pack the u8's together and make them module-4. */
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u8 num_bdes; /* Number of BDEs */
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u8 abort_bls; /* ABTS by initiator or responder */
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u8 abort_rctl; /* ACC or RJT flag */
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u8 priority; /* OAS priority */
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u8 retry; /* retry counter for IOCB cmd - if needed */
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u8 rsvd1; /* Pad for u32 */
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u8 rsvd2; /* Pad for u32 */
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u8 rsvd3; /* Pad for u32 */
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u32 cmd_flag;
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#define LPFC_IO_LIBDFC 1 /* libdfc iocb */
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#define LPFC_IO_WAKE 2 /* Synchronous I/O completed */
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#define LPFC_IO_WAKE_TMO LPFC_IO_WAKE /* Synchronous I/O timed out */
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#define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */
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#define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */
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#define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */
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#define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */
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#define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */
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#define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */
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#define DSS_SECURITY_OP 0x100 /* security IO */
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#define LPFC_IO_ON_TXCMPLQ 0x200 /* The IO is still on the TXCMPLQ */
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#define LPFC_IO_DIF_PASS 0x400 /* T10 DIF IO pass-thru prot */
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#define LPFC_IO_DIF_STRIP 0x800 /* T10 DIF IO strip prot */
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#define LPFC_IO_DIF_INSERT 0x1000 /* T10 DIF IO insert prot */
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#define LPFC_IO_CMD_OUTSTANDING 0x2000 /* timeout handler abort window */
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#define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */
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#define LPFC_FIP_ELS_ID_SHIFT 14
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#define LPFC_IO_OAS 0x10000 /* OAS FCP IO */
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#define LPFC_IO_FOF 0x20000 /* FOF FCP IO */
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#define LPFC_IO_LOOPBACK 0x40000 /* Loopback IO */
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#define LPFC_PRLI_NVME_REQ 0x80000 /* This is an NVME PRLI. */
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#define LPFC_PRLI_FCP_REQ 0x100000 /* This is an NVME PRLI. */
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#define LPFC_IO_NVME 0x200000 /* NVME FCP command */
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#define LPFC_IO_NVME_LS 0x400000 /* NVME LS command */
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#define LPFC_IO_NVMET 0x800000 /* NVMET command */
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#define LPFC_IO_VMID 0x1000000 /* VMID tagged IO */
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#define LPFC_IO_CMF 0x4000000 /* CMF command */
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uint32_t drvrTimeout; /* driver timeout in seconds */
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struct lpfc_vport *vport;/* virtual port pointer */
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struct lpfc_dmabuf *cmd_dmabuf;
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struct lpfc_dmabuf *rsp_dmabuf;
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struct lpfc_dmabuf *bpl_dmabuf;
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uint32_t event_tag; /* LA Event tag */
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union {
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wait_queue_head_t *wait_queue;
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struct lpfcMboxq *mbox;
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struct lpfc_node_rrq *rrq;
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struct nvmefc_ls_req *nvme_lsreq;
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struct lpfc_async_xchg_ctx *axchg;
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struct bsg_job_data *dd_data;
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} context_un;
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struct lpfc_io_buf *io_buf;
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struct lpfc_iocbq *rsp_iocb;
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struct lpfc_nodelist *ndlp;
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union lpfc_vmid_tag vmid_tag;
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void (*fabric_cmd_cmpl)(struct lpfc_hba *phba, struct lpfc_iocbq *cmd,
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struct lpfc_iocbq *rsp);
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void (*wait_cmd_cmpl)(struct lpfc_hba *phba, struct lpfc_iocbq *cmd,
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struct lpfc_iocbq *rsp);
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void (*cmd_cmpl)(struct lpfc_hba *phba, struct lpfc_iocbq *cmd,
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struct lpfc_iocbq *rsp);
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};
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#define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
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#define IOCB_SUCCESS 0
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#define IOCB_BUSY 1
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#define IOCB_ERROR 2
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#define IOCB_TIMEDOUT 3
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#define IOCB_ABORTED 4
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#define IOCB_ABORTING 5
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#define IOCB_NORESOURCE 6
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#define SLI_WQE_RET_WQE 1 /* Return WQE if cmd ring full */
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#define WQE_SUCCESS 0
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#define WQE_BUSY 1
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#define WQE_ERROR 2
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#define WQE_TIMEDOUT 3
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#define WQE_ABORTED 4
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#define WQE_ABORTING 5
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#define WQE_NORESOURCE 6
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#define LPFC_MBX_WAKE 1
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#define LPFC_MBX_IMED_UNREG 2
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typedef struct lpfcMboxq {
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/* MBOXQs are used in single linked lists */
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struct list_head list; /* ptr to next mailbox command */
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union {
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MAILBOX_t mb; /* Mailbox cmd */
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struct lpfc_mqe mqe;
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} u;
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struct lpfc_vport *vport; /* virtual port pointer */
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void *ctx_ndlp; /* caller ndlp information */
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void *ctx_buf; /* caller buffer information */
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void *context3;
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void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
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uint8_t mbox_flag;
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uint16_t in_ext_byte_len;
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uint16_t out_ext_byte_len;
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uint8_t mbox_offset_word;
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struct lpfc_mcqe mcqe;
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struct lpfc_mbx_nembed_sge_virt *sge_array;
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} LPFC_MBOXQ_t;
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#define MBX_POLL 1 /* poll mailbox till command done, then
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return */
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#define MBX_NOWAIT 2 /* issue command then return immediately */
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#define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per
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ring */
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#define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver.
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For SLI4, an additional ring for each
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FCP WQ will be allocated. */
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struct lpfc_sli_ring;
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struct lpfc_sli_ring_mask {
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uint8_t profile; /* profile associated with ring */
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uint8_t rctl; /* rctl / type pair configured for ring */
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uint8_t type; /* rctl / type pair configured for ring */
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uint8_t rsvd;
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/* rcv'd unsol event */
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void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
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struct lpfc_sli_ring *,
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struct lpfc_iocbq *);
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};
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/* Structure used to hold SLI statistical counters and info */
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struct lpfc_sli_ring_stat {
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uint64_t iocb_event; /* IOCB event counters */
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uint64_t iocb_cmd; /* IOCB cmd issued */
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uint64_t iocb_rsp; /* IOCB rsp received */
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uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
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uint64_t iocb_cmd_full; /* IOCB cmd ring full */
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uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
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uint64_t iocb_rsp_full; /* IOCB rsp ring full */
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};
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struct lpfc_sli3_ring {
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uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */
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uint32_t next_cmdidx; /* next_cmd index */
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uint32_t rspidx; /* current index in response ring */
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uint32_t cmdidx; /* current index in command ring */
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uint16_t numCiocb; /* number of command iocb's per ring */
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uint16_t numRiocb; /* number of rsp iocb's per ring */
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uint16_t sizeCiocb; /* Size of command iocb's in this ring */
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uint16_t sizeRiocb; /* Size of response iocb's in this ring */
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uint32_t *cmdringaddr; /* virtual address for cmd rings */
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uint32_t *rspringaddr; /* virtual address for rsp rings */
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};
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struct lpfc_sli4_ring {
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struct lpfc_queue *wqp; /* Pointer to associated WQ */
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};
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/* Structure used to hold SLI ring information */
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struct lpfc_sli_ring {
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uint16_t flag; /* ring flags */
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#define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
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#define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
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#define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
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uint16_t abtsiotag; /* tracks next iotag to use for ABTS */
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uint8_t rsvd;
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uint8_t ringno; /* ring number */
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spinlock_t ring_lock; /* lock for issuing commands */
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uint32_t fast_iotag; /* max fastlookup based iotag */
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uint32_t iotag_ctr; /* keeps track of the next iotag to use */
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uint32_t iotag_max; /* max iotag value to use */
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struct list_head txq;
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uint16_t txq_cnt; /* current length of queue */
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uint16_t txq_max; /* max length */
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struct list_head txcmplq;
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uint16_t txcmplq_cnt; /* current length of queue */
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uint16_t txcmplq_max; /* max length */
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uint32_t missbufcnt; /* keep track of buffers to post */
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struct list_head postbufq;
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uint16_t postbufq_cnt; /* current length of queue */
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uint16_t postbufq_max; /* max length */
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struct list_head iocb_continueq;
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uint16_t iocb_continueq_cnt; /* current length of queue */
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uint16_t iocb_continueq_max; /* max length */
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struct list_head iocb_continue_saveq;
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struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
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uint32_t num_mask; /* number of mask entries in prt array */
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void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *,
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struct lpfc_sli_ring *, struct lpfc_iocbq *);
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struct lpfc_sli_ring_stat stats; /* SLI statistical info */
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/* cmd ring available */
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void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
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struct lpfc_sli_ring *);
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union {
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struct lpfc_sli3_ring sli3;
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struct lpfc_sli4_ring sli4;
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} sli;
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};
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/* Structure used for configuring rings to a specific profile or rctl / type */
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struct lpfc_hbq_init {
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uint32_t rn; /* Receive buffer notification */
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uint32_t entry_count; /* max # of entries in HBQ */
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uint32_t headerLen; /* 0 if not profile 4 or 5 */
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uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */
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uint32_t profile; /* Selection profile 0=all, 7=logentry */
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uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001,
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* ring2=b0100 */
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uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */
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uint32_t seqlenoff;
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uint32_t maxlen;
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uint32_t seqlenbcnt;
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uint32_t cmdcodeoff;
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uint32_t cmdmatch[8];
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uint32_t mask_count; /* number of mask entries in prt array */
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struct hbq_mask hbqMasks[6];
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/* Non-config rings fields to keep track of buffer allocations */
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uint32_t buffer_count; /* number of buffers allocated */
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uint32_t init_count; /* number to allocate when initialized */
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uint32_t add_count; /* number to allocate when starved */
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} ;
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/* Structure used to hold SLI statistical counters and info */
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struct lpfc_sli_stat {
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uint64_t mbox_stat_err; /* Mbox cmds completed status error */
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uint64_t mbox_cmd; /* Mailbox commands issued */
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uint64_t sli_intr; /* Count of Host Attention interrupts */
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uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */
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uint64_t sli_ips; /* Host Attention interrupts per sec */
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uint32_t err_attn_event; /* Error Attn event counters */
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uint32_t link_event; /* Link event counters */
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uint32_t mbox_event; /* Mailbox event counters */
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uint32_t mbox_busy; /* Mailbox cmd busy */
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};
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/* Structure to store link status values when port stats are reset */
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struct lpfc_lnk_stat {
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uint32_t link_failure_count;
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uint32_t loss_of_sync_count;
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uint32_t loss_of_signal_count;
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uint32_t prim_seq_protocol_err_count;
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uint32_t invalid_tx_word_count;
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uint32_t invalid_crc_count;
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uint32_t error_frames;
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uint32_t link_events;
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};
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/* Structure used to hold SLI information */
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struct lpfc_sli {
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uint32_t num_rings;
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uint32_t sli_flag;
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/* Additional sli_flags */
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#define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
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#define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */
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#define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
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#define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */
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#define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */
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#define LPFC_SLI_SUPPRESS_RSP 0x4000 /* Suppress RSP feature is supported */
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#define LPFC_SLI_USE_EQDR 0x8000 /* EQ Delay Register is supported */
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#define LPFC_QUEUE_FREE_INIT 0x10000 /* Queue freeing is in progress */
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#define LPFC_QUEUE_FREE_WAIT 0x20000 /* Hold Queue free as it is being
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* used outside worker thread
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*/
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struct lpfc_sli_ring *sli3_ring;
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struct lpfc_sli_stat slistat; /* SLI statistical info */
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struct list_head mboxq;
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uint16_t mboxq_cnt; /* current length of queue */
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uint16_t mboxq_max; /* max length */
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LPFC_MBOXQ_t *mbox_active; /* active mboxq information */
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struct list_head mboxq_cmpl;
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struct timer_list mbox_tmo; /* Hold clk to timeout active mbox
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cmd */
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#define LPFC_IOCBQ_LOOKUP_INCREMENT 1024
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struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
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size_t iocbq_lookup_len; /* current lengs of the array */
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uint16_t last_iotag; /* last allocated IOTAG */
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time64_t stats_start; /* in seconds */
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struct lpfc_lnk_stat lnk_stat_offsets;
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};
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/* Timeout for normal outstanding mbox command (Seconds) */
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#define LPFC_MBOX_TMO 30
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/* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */
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#define LPFC_MBOX_SLI4_CONFIG_TMO 60
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/* Timeout for flash-based outstanding sli_config mbox command (Seconds) */
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#define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300
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/* Timeout for other flash-based outstanding mbox command (Seconds) */
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#define LPFC_MBOX_TMO_FLASH_CMD 300
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struct lpfc_io_buf {
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/* Common fields */
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struct list_head list;
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void *data;
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dma_addr_t dma_handle;
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dma_addr_t dma_phys_sgl;
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struct sli4_sge *dma_sgl; /* initial segment chunk */
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/* linked list of extra sli4_hybrid_sge */
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struct list_head dma_sgl_xtra_list;
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/* list head for fcp_cmd_rsp buf */
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struct list_head dma_cmd_rsp_list;
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struct lpfc_iocbq cur_iocbq;
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struct lpfc_sli4_hdw_queue *hdwq;
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uint16_t hdwq_no;
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uint16_t cpu;
|
|
|
|
struct lpfc_nodelist *ndlp;
|
|
uint32_t timeout;
|
|
uint16_t flags;
|
|
#define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */
|
|
#define LPFC_SBUF_BUMP_QDEPTH 0x2 /* bumped queue depth counter */
|
|
/* External DIF device IO conversions */
|
|
#define LPFC_SBUF_NORMAL_DIF 0x4 /* normal mode to insert/strip */
|
|
#define LPFC_SBUF_PASS_DIF 0x8 /* insert/strip mode to passthru */
|
|
#define LPFC_SBUF_NOT_POSTED 0x10 /* SGL failed post to FW. */
|
|
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.
|
|
*/
|
|
unsigned long start_time;
|
|
spinlock_t buf_lock; /* lock used in case of simultaneous abort */
|
|
bool expedite; /* this is an expedite io_buf */
|
|
|
|
union {
|
|
/* SCSI specific fields */
|
|
struct {
|
|
struct scsi_cmnd *pCmd;
|
|
struct lpfc_rport_data *rdata;
|
|
uint32_t prot_seg_cnt; /* seg_cnt's counterpart for
|
|
* protection data
|
|
*/
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
struct fcp_cmnd *fcp_cmnd;
|
|
struct fcp_rsp *fcp_rsp;
|
|
|
|
wait_queue_head_t *waitq;
|
|
|
|
#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
|
|
};
|
|
|
|
/* NVME specific fields */
|
|
struct {
|
|
struct nvmefc_fcp_req *nvmeCmd;
|
|
uint16_t qidx;
|
|
};
|
|
};
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
uint64_t ts_cmd_start;
|
|
uint64_t ts_last_cmd;
|
|
uint64_t ts_cmd_wqput;
|
|
uint64_t ts_isr_cmpl;
|
|
uint64_t ts_data_io;
|
|
#endif
|
|
uint64_t rx_cmd_start;
|
|
};
|