1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. 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 #include <linux/nvme.h> 25 #include <linux/nvme-fc-driver.h> 26 #include <linux/nvme-fc.h> 27 28 #define LPFC_NVME_DEFAULT_SEGS (64 + 1) /* 256K IOs */ 29 30 #define LPFC_NVME_ERSP_LEN 0x20 31 32 #define LPFC_NVME_WAIT_TMO 10 33 #define LPFC_NVME_EXPEDITE_XRICNT 8 34 #define LPFC_NVME_FB_SHIFT 9 35 #define LPFC_NVME_MAX_FB (1 << 20) /* 1M */ 36 37 #define LPFC_MAX_NVME_INFO_TMP_LEN 100 38 #define LPFC_NVME_INFO_MORE_STR "\nCould be more info...\n" 39 40 #define lpfc_ndlp_get_nrport(ndlp) \ 41 ((!ndlp->nrport || (ndlp->upcall_flags & NLP_WAIT_FOR_UNREG)) \ 42 ? NULL : ndlp->nrport) 43 44 struct lpfc_nvme_qhandle { 45 uint32_t index; /* WQ index to use */ 46 uint32_t qidx; /* queue index passed to create */ 47 uint32_t cpu_id; /* current cpu id at time of create */ 48 }; 49 50 /* Declare nvme-based local and remote port definitions. */ 51 struct lpfc_nvme_lport { 52 struct lpfc_vport *vport; 53 struct completion *lport_unreg_cmp; 54 /* Add stats counters here */ 55 atomic_t fc4NvmeLsRequests; 56 atomic_t fc4NvmeLsCmpls; 57 atomic_t xmt_fcp_noxri; 58 atomic_t xmt_fcp_bad_ndlp; 59 atomic_t xmt_fcp_qdepth; 60 atomic_t xmt_fcp_wqerr; 61 atomic_t xmt_fcp_err; 62 atomic_t xmt_fcp_abort; 63 atomic_t xmt_ls_abort; 64 atomic_t xmt_ls_err; 65 atomic_t cmpl_fcp_xb; 66 atomic_t cmpl_fcp_err; 67 atomic_t cmpl_ls_xb; 68 atomic_t cmpl_ls_err; 69 }; 70 71 struct lpfc_nvme_rport { 72 struct lpfc_nvme_lport *lport; 73 struct nvme_fc_remote_port *remoteport; 74 struct lpfc_nodelist *ndlp; 75 struct completion rport_unreg_done; 76 }; 77 78 struct lpfc_nvme_fcpreq_priv { 79 struct lpfc_io_buf *nvme_buf; 80 }; 81 82 83 #define LPFC_NVMET_DEFAULT_SEGS (64 + 1) /* 256K IOs */ 84 #define LPFC_NVMET_RQE_MIN_POST 128 85 #define LPFC_NVMET_RQE_DEF_POST 512 86 #define LPFC_NVMET_RQE_DEF_COUNT 2048 87 #define LPFC_NVMET_SUCCESS_LEN 12 88 89 #define LPFC_NVMET_MRQ_AUTO 0 90 #define LPFC_NVMET_MRQ_MAX 16 91 92 #define LPFC_NVMET_WAIT_TMO (5 * MSEC_PER_SEC) 93 94 /* Used for NVME Target */ 95 struct lpfc_nvmet_tgtport { 96 struct lpfc_hba *phba; 97 struct completion *tport_unreg_cmp; 98 99 /* Stats counters - lpfc_nvmet_unsol_ls_buffer */ 100 atomic_t rcv_ls_req_in; 101 atomic_t rcv_ls_req_out; 102 atomic_t rcv_ls_req_drop; 103 atomic_t xmt_ls_abort; 104 atomic_t xmt_ls_abort_cmpl; 105 106 /* Stats counters - lpfc_nvmet_xmt_ls_rsp */ 107 atomic_t xmt_ls_rsp; 108 atomic_t xmt_ls_drop; 109 110 /* Stats counters - lpfc_nvmet_xmt_ls_rsp_cmp */ 111 atomic_t xmt_ls_rsp_error; 112 atomic_t xmt_ls_rsp_aborted; 113 atomic_t xmt_ls_rsp_xb_set; 114 atomic_t xmt_ls_rsp_cmpl; 115 116 /* Stats counters - lpfc_nvmet_unsol_fcp_buffer */ 117 atomic_t rcv_fcp_cmd_in; 118 atomic_t rcv_fcp_cmd_out; 119 atomic_t rcv_fcp_cmd_drop; 120 atomic_t rcv_fcp_cmd_defer; 121 atomic_t xmt_fcp_release; 122 123 /* Stats counters - lpfc_nvmet_xmt_fcp_op */ 124 atomic_t xmt_fcp_drop; 125 atomic_t xmt_fcp_read_rsp; 126 atomic_t xmt_fcp_read; 127 atomic_t xmt_fcp_write; 128 atomic_t xmt_fcp_rsp; 129 130 /* Stats counters - lpfc_nvmet_xmt_fcp_op_cmp */ 131 atomic_t xmt_fcp_rsp_xb_set; 132 atomic_t xmt_fcp_rsp_cmpl; 133 atomic_t xmt_fcp_rsp_error; 134 atomic_t xmt_fcp_rsp_aborted; 135 atomic_t xmt_fcp_rsp_drop; 136 137 /* Stats counters - lpfc_nvmet_xmt_fcp_abort */ 138 atomic_t xmt_fcp_xri_abort_cqe; 139 atomic_t xmt_fcp_abort; 140 atomic_t xmt_fcp_abort_cmpl; 141 atomic_t xmt_abort_sol; 142 atomic_t xmt_abort_unsol; 143 atomic_t xmt_abort_rsp; 144 atomic_t xmt_abort_rsp_error; 145 146 /* Stats counters - defer IO */ 147 atomic_t defer_ctx; 148 atomic_t defer_fod; 149 atomic_t defer_wqfull; 150 }; 151 152 struct lpfc_nvmet_ctx_info { 153 struct list_head nvmet_ctx_list; 154 spinlock_t nvmet_ctx_list_lock; /* lock per CPU */ 155 struct lpfc_nvmet_ctx_info *nvmet_ctx_next_cpu; 156 struct lpfc_nvmet_ctx_info *nvmet_ctx_start_cpu; 157 uint16_t nvmet_ctx_list_cnt; 158 char pad[16]; /* pad to a cache-line */ 159 }; 160 161 /* This retrieves the context info associated with the specified cpu / mrq */ 162 #define lpfc_get_ctx_list(phba, cpu, mrq) \ 163 (phba->sli4_hba.nvmet_ctx_info + ((cpu * phba->cfg_nvmet_mrq) + mrq)) 164 165 struct lpfc_nvmet_rcv_ctx { 166 union { 167 struct nvmefc_ls_rsp ls_rsp; 168 struct nvmefc_tgt_fcp_req fcp_req; 169 } ctx; 170 struct list_head list; 171 struct lpfc_hba *phba; 172 struct lpfc_iocbq *wqeq; 173 struct lpfc_iocbq *abort_wqeq; 174 spinlock_t ctxlock; /* protect flag access */ 175 uint32_t sid; 176 uint32_t offset; 177 uint16_t oxid; 178 uint16_t size; 179 uint16_t entry_cnt; 180 uint16_t cpu; 181 uint16_t idx; 182 uint16_t state; 183 /* States */ 184 #define LPFC_NVMET_STE_LS_RCV 1 185 #define LPFC_NVMET_STE_LS_ABORT 2 186 #define LPFC_NVMET_STE_LS_RSP 3 187 #define LPFC_NVMET_STE_RCV 4 188 #define LPFC_NVMET_STE_DATA 5 189 #define LPFC_NVMET_STE_ABORT 6 190 #define LPFC_NVMET_STE_DONE 7 191 #define LPFC_NVMET_STE_FREE 0xff 192 uint16_t flag; 193 #define LPFC_NVMET_IO_INP 0x1 /* IO is in progress on exchange */ 194 #define LPFC_NVMET_ABORT_OP 0x2 /* Abort WQE issued on exchange */ 195 #define LPFC_NVMET_XBUSY 0x4 /* XB bit set on IO cmpl */ 196 #define LPFC_NVMET_CTX_RLS 0x8 /* ctx free requested */ 197 #define LPFC_NVMET_ABTS_RCV 0x10 /* ABTS received on exchange */ 198 #define LPFC_NVMET_CTX_REUSE_WQ 0x20 /* ctx reused via WQ */ 199 #define LPFC_NVMET_DEFER_WQFULL 0x40 /* Waiting on a free WQE */ 200 #define LPFC_NVMET_TNOTIFY 0x80 /* notify transport of abts */ 201 struct rqb_dmabuf *rqb_buffer; 202 struct lpfc_nvmet_ctxbuf *ctxbuf; 203 struct lpfc_sli4_hdw_queue *hdwq; 204 205 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 206 uint64_t ts_isr_cmd; 207 uint64_t ts_cmd_nvme; 208 uint64_t ts_nvme_data; 209 uint64_t ts_data_wqput; 210 uint64_t ts_isr_data; 211 uint64_t ts_data_nvme; 212 uint64_t ts_nvme_status; 213 uint64_t ts_status_wqput; 214 uint64_t ts_isr_status; 215 uint64_t ts_status_nvme; 216 #endif 217 }; 218 219 220 /* routines found in lpfc_nvme.c */ 221 222 /* routines found in lpfc_nvmet.c */ 223