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 #define LPFC_NVME_WQSIZE 1024 26 #define LPFC_NVME_CQSIZE 4096 27 28 #define LPFC_NVME_ERSP_LEN 0x20 29 30 #define LPFC_NVME_WAIT_TMO 10 31 32 struct lpfc_nvme_qhandle { 33 uint32_t index; /* WQ index to use */ 34 uint32_t qidx; /* queue index passed to create */ 35 uint32_t cpu_id; /* current cpu id at time of create */ 36 }; 37 38 /* Declare nvme-based local and remote port definitions. */ 39 struct lpfc_nvme_lport { 40 struct lpfc_vport *vport; 41 struct completion lport_unreg_done; 42 /* Add sttats counters here */ 43 }; 44 45 struct lpfc_nvme_rport { 46 struct lpfc_nvme_lport *lport; 47 struct nvme_fc_remote_port *remoteport; 48 struct lpfc_nodelist *ndlp; 49 struct completion rport_unreg_done; 50 }; 51 52 struct lpfc_nvme_buf { 53 struct list_head list; 54 struct nvmefc_fcp_req *nvmeCmd; 55 struct lpfc_nvme_rport *nrport; 56 struct lpfc_nodelist *ndlp; 57 58 uint32_t timeout; 59 60 uint16_t flags; /* TBD convert exch_busy to flags */ 61 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ 62 uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ 63 uint16_t status; /* From IOCB Word 7- ulpStatus */ 64 uint16_t cpu; 65 uint16_t qidx; 66 uint16_t sqid; 67 uint32_t result; /* From IOCB Word 4. */ 68 69 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 70 * dma_map_sg. The driver needs this for calls 71 * to dma_unmap_sg. 72 */ 73 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 74 75 /* 76 * data and dma_handle are the kernel virtual and bus address of the 77 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 78 * gather bde list that supports the sg_tablesize value. 79 */ 80 void *data; 81 dma_addr_t dma_handle; 82 83 struct sli4_sge *nvme_sgl; 84 dma_addr_t dma_phys_sgl; 85 86 /* cur_iocbq has phys of the dma-able buffer. 87 * Iotag is in here 88 */ 89 struct lpfc_iocbq cur_iocbq; 90 91 wait_queue_head_t *waitq; 92 unsigned long start_time; 93 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 94 uint64_t ts_cmd_start; 95 uint64_t ts_last_cmd; 96 uint64_t ts_cmd_wqput; 97 uint64_t ts_isr_cmpl; 98 uint64_t ts_data_nvme; 99 #endif 100 }; 101 102 struct lpfc_nvme_fcpreq_priv { 103 struct lpfc_nvme_buf *nvme_buf; 104 }; 105