1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017 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 /* Declare nvme-based local and remote port definitions. */ 40 struct lpfc_nvme_lport { 41 struct lpfc_vport *vport; 42 struct completion lport_unreg_done; 43 /* Add stats counters here */ 44 atomic_t xmt_fcp_noxri; 45 atomic_t xmt_fcp_bad_ndlp; 46 atomic_t xmt_fcp_qdepth; 47 atomic_t xmt_fcp_wqerr; 48 atomic_t xmt_fcp_abort; 49 atomic_t xmt_ls_abort; 50 atomic_t xmt_ls_err; 51 atomic_t cmpl_fcp_xb; 52 atomic_t cmpl_fcp_err; 53 atomic_t cmpl_ls_xb; 54 atomic_t cmpl_ls_err; 55 }; 56 57 struct lpfc_nvme_rport { 58 struct lpfc_nvme_lport *lport; 59 struct nvme_fc_remote_port *remoteport; 60 struct lpfc_nodelist *ndlp; 61 struct completion rport_unreg_done; 62 }; 63 64 struct lpfc_nvme_buf { 65 struct list_head list; 66 struct nvmefc_fcp_req *nvmeCmd; 67 struct lpfc_nvme_rport *nrport; 68 struct lpfc_nodelist *ndlp; 69 70 uint32_t timeout; 71 72 uint16_t flags; /* TBD convert exch_busy to flags */ 73 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ 74 uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ 75 uint16_t status; /* From IOCB Word 7- ulpStatus */ 76 uint16_t cpu; 77 uint16_t qidx; 78 uint16_t sqid; 79 uint32_t result; /* From IOCB Word 4. */ 80 81 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 82 * dma_map_sg. The driver needs this for calls 83 * to dma_unmap_sg. 84 */ 85 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 86 87 /* 88 * data and dma_handle are the kernel virtual and bus address of the 89 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 90 * gather bde list that supports the sg_tablesize value. 91 */ 92 void *data; 93 dma_addr_t dma_handle; 94 95 struct sli4_sge *nvme_sgl; 96 dma_addr_t dma_phys_sgl; 97 98 /* cur_iocbq has phys of the dma-able buffer. 99 * Iotag is in here 100 */ 101 struct lpfc_iocbq cur_iocbq; 102 103 wait_queue_head_t *waitq; 104 unsigned long start_time; 105 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 106 uint64_t ts_cmd_start; 107 uint64_t ts_last_cmd; 108 uint64_t ts_cmd_wqput; 109 uint64_t ts_isr_cmpl; 110 uint64_t ts_data_nvme; 111 #endif 112 }; 113 114 struct lpfc_nvme_fcpreq_priv { 115 struct lpfc_nvme_buf *nvme_buf; 116 }; 117