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_MIN_SEGS 16 25 #define LPFC_NVME_DEFAULT_SEGS 66 /* 256K IOs - 64 + 2 */ 26 #define LPFC_NVME_MAX_SEGS 510 27 #define LPFC_NVMET_MIN_POSTBUF 16 28 #define LPFC_NVMET_DEFAULT_POSTBUF 1024 29 #define LPFC_NVMET_MAX_POSTBUF 4096 30 #define LPFC_NVME_WQSIZE 256 31 32 #define LPFC_NVME_ERSP_LEN 0x20 33 34 struct lpfc_nvme_qhandle { 35 uint32_t index; /* WQ index to use */ 36 uint32_t qidx; /* queue index passed to create */ 37 uint32_t cpu_id; /* current cpu id at time of create */ 38 }; 39 40 /* Declare nvme-based local and remote port definitions. */ 41 struct lpfc_nvme_lport { 42 struct lpfc_vport *vport; 43 struct list_head rport_list; 44 struct completion lport_unreg_done; 45 /* Add sttats counters here */ 46 }; 47 48 struct lpfc_nvme_rport { 49 struct list_head list; 50 struct lpfc_nvme_lport *lport; 51 struct nvme_fc_remote_port *remoteport; 52 struct lpfc_nodelist *ndlp; 53 struct completion rport_unreg_done; 54 }; 55 56 struct lpfc_nvme_buf { 57 struct list_head list; 58 struct nvmefc_fcp_req *nvmeCmd; 59 struct lpfc_nvme_rport *nrport; 60 61 uint32_t timeout; 62 63 uint16_t flags; /* TBD convert exch_busy to flags */ 64 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ 65 uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ 66 uint16_t status; /* From IOCB Word 7- ulpStatus */ 67 uint16_t cpu; 68 uint16_t qidx; 69 uint16_t sqid; 70 uint32_t result; /* From IOCB Word 4. */ 71 72 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 73 * dma_map_sg. The driver needs this for calls 74 * to dma_unmap_sg. 75 */ 76 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 77 78 /* 79 * data and dma_handle are the kernel virtual and bus address of the 80 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 81 * gather bde list that supports the sg_tablesize value. 82 */ 83 void *data; 84 dma_addr_t dma_handle; 85 86 struct sli4_sge *nvme_sgl; 87 dma_addr_t dma_phys_sgl; 88 89 /* cur_iocbq has phys of the dma-able buffer. 90 * Iotag is in here 91 */ 92 struct lpfc_iocbq cur_iocbq; 93 94 wait_queue_head_t *waitq; 95 unsigned long start_time; 96 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 97 uint64_t ts_cmd_start; 98 uint64_t ts_last_cmd; 99 uint64_t ts_cmd_wqput; 100 uint64_t ts_isr_cmpl; 101 uint64_t ts_data_nvme; 102 #endif 103 }; 104