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253 lines
8.1 KiB
253 lines
8.1 KiB
/******************************************************************* |
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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) 2017-2021 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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* Portions Copyright (C) 2004-2005 Christoph Hellwig * |
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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 <linux/nvme.h> |
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#include <linux/nvme-fc-driver.h> |
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#include <linux/nvme-fc.h> |
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#define LPFC_NVME_DEFAULT_SEGS (64 + 1) /* 256K IOs */ |
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#define LPFC_NVME_ERSP_LEN 0x20 |
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#define LPFC_NVME_WAIT_TMO 10 |
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#define LPFC_NVME_EXPEDITE_XRICNT 8 |
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#define LPFC_NVME_FB_SHIFT 9 |
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#define LPFC_NVME_MAX_FB (1 << 20) /* 1M */ |
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#define lpfc_ndlp_get_nrport(ndlp) \ |
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((!ndlp->nrport || (ndlp->fc4_xpt_flags & NVME_XPT_UNREG_WAIT))\ |
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? NULL : ndlp->nrport) |
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struct lpfc_nvme_qhandle { |
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uint32_t index; /* WQ index to use */ |
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uint32_t qidx; /* queue index passed to create */ |
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uint32_t cpu_id; /* current cpu id at time of create */ |
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}; |
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/* Declare nvme-based local and remote port definitions. */ |
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struct lpfc_nvme_lport { |
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struct lpfc_vport *vport; |
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struct completion *lport_unreg_cmp; |
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/* Add stats counters here */ |
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atomic_t fc4NvmeLsRequests; |
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atomic_t fc4NvmeLsCmpls; |
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atomic_t xmt_fcp_noxri; |
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atomic_t xmt_fcp_bad_ndlp; |
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atomic_t xmt_fcp_qdepth; |
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atomic_t xmt_fcp_wqerr; |
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atomic_t xmt_fcp_err; |
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atomic_t xmt_fcp_abort; |
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atomic_t xmt_ls_abort; |
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atomic_t xmt_ls_err; |
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atomic_t cmpl_fcp_xb; |
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atomic_t cmpl_fcp_err; |
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atomic_t cmpl_ls_xb; |
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atomic_t cmpl_ls_err; |
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}; |
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struct lpfc_nvme_rport { |
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struct lpfc_nvme_lport *lport; |
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struct nvme_fc_remote_port *remoteport; |
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struct lpfc_nodelist *ndlp; |
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struct completion rport_unreg_done; |
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}; |
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struct lpfc_nvme_fcpreq_priv { |
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struct lpfc_io_buf *nvme_buf; |
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}; |
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/* |
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* set NVME LS request timeouts to 30s. It is larger than the 2*R_A_TOV |
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* set by the spec, which appears to have issues with some devices. |
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*/ |
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#define LPFC_NVME_LS_TIMEOUT 30 |
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#define LPFC_NVMET_DEFAULT_SEGS (64 + 1) /* 256K IOs */ |
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#define LPFC_NVMET_RQE_MIN_POST 128 |
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#define LPFC_NVMET_RQE_DEF_POST 512 |
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#define LPFC_NVMET_RQE_DEF_COUNT 2048 |
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#define LPFC_NVMET_SUCCESS_LEN 12 |
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#define LPFC_NVMET_MRQ_AUTO 0 |
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#define LPFC_NVMET_MRQ_MAX 16 |
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#define LPFC_NVMET_WAIT_TMO (5 * MSEC_PER_SEC) |
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/* Used for NVME Target */ |
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#define LPFC_NVMET_INV_HOST_ACTIVE 1 |
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struct lpfc_nvmet_tgtport { |
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struct lpfc_hba *phba; |
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struct completion *tport_unreg_cmp; |
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atomic_t state; /* tracks nvmet hosthandle invalidation */ |
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/* Stats counters - lpfc_nvmet_unsol_ls_buffer */ |
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atomic_t rcv_ls_req_in; |
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atomic_t rcv_ls_req_out; |
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atomic_t rcv_ls_req_drop; |
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atomic_t xmt_ls_abort; |
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atomic_t xmt_ls_abort_cmpl; |
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/* Stats counters - lpfc_nvmet_xmt_ls_rsp */ |
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atomic_t xmt_ls_rsp; |
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atomic_t xmt_ls_drop; |
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/* Stats counters - lpfc_nvmet_xmt_ls_rsp_cmp */ |
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atomic_t xmt_ls_rsp_error; |
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atomic_t xmt_ls_rsp_aborted; |
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atomic_t xmt_ls_rsp_xb_set; |
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atomic_t xmt_ls_rsp_cmpl; |
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/* Stats counters - lpfc_nvmet_unsol_fcp_buffer */ |
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atomic_t rcv_fcp_cmd_in; |
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atomic_t rcv_fcp_cmd_out; |
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atomic_t rcv_fcp_cmd_drop; |
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atomic_t rcv_fcp_cmd_defer; |
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atomic_t xmt_fcp_release; |
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/* Stats counters - lpfc_nvmet_xmt_fcp_op */ |
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atomic_t xmt_fcp_drop; |
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atomic_t xmt_fcp_read_rsp; |
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atomic_t xmt_fcp_read; |
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atomic_t xmt_fcp_write; |
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atomic_t xmt_fcp_rsp; |
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/* Stats counters - lpfc_nvmet_xmt_fcp_op_cmp */ |
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atomic_t xmt_fcp_rsp_xb_set; |
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atomic_t xmt_fcp_rsp_cmpl; |
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atomic_t xmt_fcp_rsp_error; |
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atomic_t xmt_fcp_rsp_aborted; |
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atomic_t xmt_fcp_rsp_drop; |
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/* Stats counters - lpfc_nvmet_xmt_fcp_abort */ |
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atomic_t xmt_fcp_xri_abort_cqe; |
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atomic_t xmt_fcp_abort; |
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atomic_t xmt_fcp_abort_cmpl; |
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atomic_t xmt_abort_sol; |
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atomic_t xmt_abort_unsol; |
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atomic_t xmt_abort_rsp; |
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atomic_t xmt_abort_rsp_error; |
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/* Stats counters - defer IO */ |
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atomic_t defer_ctx; |
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atomic_t defer_fod; |
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atomic_t defer_wqfull; |
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}; |
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struct lpfc_nvmet_ctx_info { |
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struct list_head nvmet_ctx_list; |
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spinlock_t nvmet_ctx_list_lock; /* lock per CPU */ |
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struct lpfc_nvmet_ctx_info *nvmet_ctx_next_cpu; |
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struct lpfc_nvmet_ctx_info *nvmet_ctx_start_cpu; |
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uint16_t nvmet_ctx_list_cnt; |
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char pad[16]; /* pad to a cache-line */ |
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}; |
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/* This retrieves the context info associated with the specified cpu / mrq */ |
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#define lpfc_get_ctx_list(phba, cpu, mrq) \ |
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(phba->sli4_hba.nvmet_ctx_info + ((cpu * phba->cfg_nvmet_mrq) + mrq)) |
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/* Values for state field of struct lpfc_async_xchg_ctx */ |
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#define LPFC_NVME_STE_LS_RCV 1 |
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#define LPFC_NVME_STE_LS_ABORT 2 |
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#define LPFC_NVME_STE_LS_RSP 3 |
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#define LPFC_NVME_STE_RCV 4 |
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#define LPFC_NVME_STE_DATA 5 |
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#define LPFC_NVME_STE_ABORT 6 |
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#define LPFC_NVME_STE_DONE 7 |
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#define LPFC_NVME_STE_FREE 0xff |
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/* Values for flag field of struct lpfc_async_xchg_ctx */ |
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#define LPFC_NVME_IO_INP 0x1 /* IO is in progress on exchange */ |
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#define LPFC_NVME_ABORT_OP 0x2 /* Abort WQE issued on exchange */ |
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#define LPFC_NVME_XBUSY 0x4 /* XB bit set on IO cmpl */ |
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#define LPFC_NVME_CTX_RLS 0x8 /* ctx free requested */ |
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#define LPFC_NVME_ABTS_RCV 0x10 /* ABTS received on exchange */ |
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#define LPFC_NVME_CTX_REUSE_WQ 0x20 /* ctx reused via WQ */ |
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#define LPFC_NVME_DEFER_WQFULL 0x40 /* Waiting on a free WQE */ |
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#define LPFC_NVME_TNOTIFY 0x80 /* notify transport of abts */ |
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struct lpfc_async_xchg_ctx { |
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union { |
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struct nvmefc_tgt_fcp_req fcp_req; |
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} hdlrctx; |
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struct list_head list; |
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struct lpfc_hba *phba; |
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struct lpfc_nodelist *ndlp; |
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struct nvmefc_ls_req *ls_req; |
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struct nvmefc_ls_rsp ls_rsp; |
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struct lpfc_iocbq *wqeq; |
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struct lpfc_iocbq *abort_wqeq; |
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spinlock_t ctxlock; /* protect flag access */ |
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uint32_t sid; |
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uint32_t offset; |
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uint16_t oxid; |
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uint16_t size; |
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uint16_t entry_cnt; |
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uint16_t cpu; |
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uint16_t idx; |
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uint16_t state; |
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uint16_t flag; |
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void *payload; |
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struct rqb_dmabuf *rqb_buffer; |
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struct lpfc_nvmet_ctxbuf *ctxbuf; |
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struct lpfc_sli4_hdw_queue *hdwq; |
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#ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
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uint64_t ts_isr_cmd; |
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uint64_t ts_cmd_nvme; |
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uint64_t ts_nvme_data; |
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uint64_t ts_data_wqput; |
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uint64_t ts_isr_data; |
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uint64_t ts_data_nvme; |
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uint64_t ts_nvme_status; |
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uint64_t ts_status_wqput; |
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uint64_t ts_isr_status; |
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uint64_t ts_status_nvme; |
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#endif |
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}; |
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/* routines found in lpfc_nvme.c */ |
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int __lpfc_nvme_ls_req(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, |
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struct nvmefc_ls_req *pnvme_lsreq, |
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void (*gen_req_cmp)(struct lpfc_hba *phba, |
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struct lpfc_iocbq *cmdwqe, |
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struct lpfc_wcqe_complete *wcqe)); |
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void __lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_vport *vport, |
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struct lpfc_iocbq *cmdwqe, struct lpfc_wcqe_complete *wcqe); |
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int __lpfc_nvme_ls_abort(struct lpfc_vport *vport, |
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struct lpfc_nodelist *ndlp, struct nvmefc_ls_req *pnvme_lsreq); |
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/* routines found in lpfc_nvmet.c */ |
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int lpfc_nvme_unsol_ls_issue_abort(struct lpfc_hba *phba, |
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struct lpfc_async_xchg_ctx *ctxp, uint32_t sid, |
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uint16_t xri); |
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int __lpfc_nvme_xmt_ls_rsp(struct lpfc_async_xchg_ctx *axchg, |
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struct nvmefc_ls_rsp *ls_rsp, |
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void (*xmt_ls_rsp_cmp)(struct lpfc_hba *phba, |
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struct lpfc_iocbq *cmdwqe, |
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struct lpfc_wcqe_complete *wcqe)); |
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void __lpfc_nvme_xmt_ls_rsp_cmp(struct lpfc_hba *phba, |
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struct lpfc_iocbq *cmdwqe, struct lpfc_wcqe_complete *wcqe);
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