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_NVME_DEFAULT_SEGS (64 + 1) /* 256K IOs */ 25 26 #define LPFC_NVME_ERSP_LEN 0x20 27 28 #define LPFC_NVME_WAIT_TMO 10 29 #define LPFC_NVME_EXPEDITE_XRICNT 8 30 #define LPFC_NVME_FB_SHIFT 9 31 #define LPFC_NVME_MAX_FB (1 << 20) /* 1M */ 32 33 struct lpfc_nvme_qhandle { 34 uint32_t index; /* WQ index to use */ 35 uint32_t qidx; /* queue index passed to create */ 36 uint32_t cpu_id; /* current cpu id at time of create */ 37 }; 38 39 struct lpfc_nvme_ctrl_stat { 40 atomic_t fc4NvmeInputRequests; 41 atomic_t fc4NvmeOutputRequests; 42 atomic_t fc4NvmeControlRequests; 43 atomic_t fc4NvmeIoCmpls; 44 }; 45 46 /* Declare nvme-based local and remote port definitions. */ 47 struct lpfc_nvme_lport { 48 struct lpfc_vport *vport; 49 struct completion lport_unreg_done; 50 /* Add stats counters here */ 51 struct lpfc_nvme_ctrl_stat *cstat; 52 atomic_t fc4NvmeLsRequests; 53 atomic_t fc4NvmeLsCmpls; 54 atomic_t xmt_fcp_noxri; 55 atomic_t xmt_fcp_bad_ndlp; 56 atomic_t xmt_fcp_qdepth; 57 atomic_t xmt_fcp_wqerr; 58 atomic_t xmt_fcp_abort; 59 atomic_t xmt_ls_abort; 60 atomic_t xmt_ls_err; 61 atomic_t cmpl_fcp_xb; 62 atomic_t cmpl_fcp_err; 63 atomic_t cmpl_ls_xb; 64 atomic_t cmpl_ls_err; 65 }; 66 67 struct lpfc_nvme_rport { 68 struct lpfc_nvme_lport *lport; 69 struct nvme_fc_remote_port *remoteport; 70 struct lpfc_nodelist *ndlp; 71 struct completion rport_unreg_done; 72 }; 73 74 struct lpfc_nvme_buf { 75 struct list_head list; 76 struct nvmefc_fcp_req *nvmeCmd; 77 struct lpfc_nvme_rport *nrport; 78 struct lpfc_nodelist *ndlp; 79 80 uint32_t timeout; 81 82 uint16_t flags; /* TBD convert exch_busy to flags */ 83 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ 84 uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ 85 uint16_t status; /* From IOCB Word 7- ulpStatus */ 86 uint16_t cpu; 87 uint16_t qidx; 88 uint16_t sqid; 89 uint32_t result; /* From IOCB Word 4. */ 90 91 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 92 * dma_map_sg. The driver needs this for calls 93 * to dma_unmap_sg. 94 */ 95 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 96 97 /* 98 * data and dma_handle are the kernel virtual and bus address of the 99 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 100 * gather bde list that supports the sg_tablesize value. 101 */ 102 void *data; 103 dma_addr_t dma_handle; 104 105 struct sli4_sge *nvme_sgl; 106 dma_addr_t dma_phys_sgl; 107 108 /* cur_iocbq has phys of the dma-able buffer. 109 * Iotag is in here 110 */ 111 struct lpfc_iocbq cur_iocbq; 112 113 wait_queue_head_t *waitq; 114 unsigned long start_time; 115 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 116 uint64_t ts_cmd_start; 117 uint64_t ts_last_cmd; 118 uint64_t ts_cmd_wqput; 119 uint64_t ts_isr_cmpl; 120 uint64_t ts_data_nvme; 121 #endif 122 }; 123 124 struct lpfc_nvme_fcpreq_priv { 125 struct lpfc_nvme_buf *nvme_buf; 126 }; 127