1/******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Limited and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 ********************************************************************/ 23 24#define LPFC_NVMET_DEFAULT_SEGS (64 + 1) /* 256K IOs */ 25#define LPFC_NVMET_RQE_DEF_COUNT 512 26#define LPFC_NVMET_SUCCESS_LEN 12 27 28#define LPFC_NVMET_MRQ_OFF 0xffff 29#define LPFC_NVMET_MRQ_AUTO 0 30#define LPFC_NVMET_MRQ_MAX 16 31 32/* Used for NVME Target */ 33struct lpfc_nvmet_tgtport { 34 struct lpfc_hba *phba; 35 struct completion tport_unreg_done; 36 37 /* Stats counters - lpfc_nvmet_unsol_ls_buffer */ 38 atomic_t rcv_ls_req_in; 39 atomic_t rcv_ls_req_out; 40 atomic_t rcv_ls_req_drop; 41 atomic_t xmt_ls_abort; 42 atomic_t xmt_ls_abort_cmpl; 43 44 /* Stats counters - lpfc_nvmet_xmt_ls_rsp */ 45 atomic_t xmt_ls_rsp; 46 atomic_t xmt_ls_drop; 47 48 /* Stats counters - lpfc_nvmet_xmt_ls_rsp_cmp */ 49 atomic_t xmt_ls_rsp_error; 50 atomic_t xmt_ls_rsp_aborted; 51 atomic_t xmt_ls_rsp_xb_set; 52 atomic_t xmt_ls_rsp_cmpl; 53 54 /* Stats counters - lpfc_nvmet_unsol_fcp_buffer */ 55 atomic_t rcv_fcp_cmd_in; 56 atomic_t rcv_fcp_cmd_out; 57 atomic_t rcv_fcp_cmd_drop; 58 atomic_t rcv_fcp_cmd_defer; 59 atomic_t xmt_fcp_release; 60 61 /* Stats counters - lpfc_nvmet_xmt_fcp_op */ 62 atomic_t xmt_fcp_drop; 63 atomic_t xmt_fcp_read_rsp; 64 atomic_t xmt_fcp_read; 65 atomic_t xmt_fcp_write; 66 atomic_t xmt_fcp_rsp; 67 68 /* Stats counters - lpfc_nvmet_xmt_fcp_op_cmp */ 69 atomic_t xmt_fcp_rsp_xb_set; 70 atomic_t xmt_fcp_rsp_cmpl; 71 atomic_t xmt_fcp_rsp_error; 72 atomic_t xmt_fcp_rsp_aborted; 73 atomic_t xmt_fcp_rsp_drop; 74 75 /* Stats counters - lpfc_nvmet_xmt_fcp_abort */ 76 atomic_t xmt_fcp_xri_abort_cqe; 77 atomic_t xmt_fcp_abort; 78 atomic_t xmt_fcp_abort_cmpl; 79 atomic_t xmt_abort_sol; 80 atomic_t xmt_abort_unsol; 81 atomic_t xmt_abort_rsp; 82 atomic_t xmt_abort_rsp_error; 83 84 /* Stats counters - defer IO */ 85 atomic_t defer_ctx; 86 atomic_t defer_fod; 87 atomic_t defer_wqfull; 88}; 89 90struct lpfc_nvmet_ctx_info { 91 struct list_head nvmet_ctx_list; 92 spinlock_t nvmet_ctx_list_lock; /* lock per CPU */ 93 struct lpfc_nvmet_ctx_info *nvmet_ctx_next_cpu; 94 struct lpfc_nvmet_ctx_info *nvmet_ctx_start_cpu; 95 uint16_t nvmet_ctx_list_cnt; 96 char pad[16]; /* pad to a cache-line */ 97}; 98 99/* This retrieves the context info associated with the specified cpu / mrq */ 100#define lpfc_get_ctx_list(phba, cpu, mrq) \ 101 (phba->sli4_hba.nvmet_ctx_info + ((cpu * phba->cfg_nvmet_mrq) + mrq)) 102 103struct lpfc_nvmet_rcv_ctx { 104 union { 105 struct nvmefc_tgt_ls_req ls_req; 106 struct nvmefc_tgt_fcp_req fcp_req; 107 } ctx; 108 struct list_head list; 109 struct lpfc_hba *phba; 110 struct lpfc_iocbq *wqeq; 111 struct lpfc_iocbq *abort_wqeq; 112 dma_addr_t txrdy_phys; 113 spinlock_t ctxlock; /* protect flag access */ 114 uint32_t *txrdy; 115 uint32_t sid; 116 uint32_t offset; 117 uint16_t oxid; 118 uint16_t size; 119 uint16_t entry_cnt; 120 uint16_t cpu; 121 uint16_t idx; 122 uint16_t state; 123 /* States */ 124#define LPFC_NVMET_STE_LS_RCV 1 125#define LPFC_NVMET_STE_LS_ABORT 2 126#define LPFC_NVMET_STE_LS_RSP 3 127#define LPFC_NVMET_STE_RCV 4 128#define LPFC_NVMET_STE_DATA 5 129#define LPFC_NVMET_STE_ABORT 6 130#define LPFC_NVMET_STE_DONE 7 131#define LPFC_NVMET_STE_FREE 0xff 132 uint16_t flag; 133#define LPFC_NVMET_IO_INP 0x1 /* IO is in progress on exchange */ 134#define LPFC_NVMET_ABORT_OP 0x2 /* Abort WQE issued on exchange */ 135#define LPFC_NVMET_XBUSY 0x4 /* XB bit set on IO cmpl */ 136#define LPFC_NVMET_CTX_RLS 0x8 /* ctx free requested */ 137#define LPFC_NVMET_ABTS_RCV 0x10 /* ABTS received on exchange */ 138#define LPFC_NVMET_DEFER_WQFULL 0x40 /* Waiting on a free WQE */ 139 struct rqb_dmabuf *rqb_buffer; 140 struct lpfc_nvmet_ctxbuf *ctxbuf; 141 142#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 143 uint64_t ts_isr_cmd; 144 uint64_t ts_cmd_nvme; 145 uint64_t ts_nvme_data; 146 uint64_t ts_data_wqput; 147 uint64_t ts_isr_data; 148 uint64_t ts_data_nvme; 149 uint64_t ts_nvme_status; 150 uint64_t ts_status_wqput; 151 uint64_t ts_isr_status; 152 uint64_t ts_status_nvme; 153#endif 154}; 155