1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 5 * EMULEX and SLI are trademarks of Emulex. * 6 * www.emulex.com * 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 8 * * 9 * This program is free software; you can redistribute it and/or * 10 * modify it under the terms of version 2 of the GNU General * 11 * Public License as published by the Free Software Foundation. * 12 * This program is distributed in the hope that it will be useful. * 13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 17 * TO BE LEGALLY INVALID. See the GNU General Public License for * 18 * more details, a copy of which can be found in the file COPYING * 19 * included with this package. * 20 ********************************************************************/ 21 22 #define LPFC_NVME_MIN_SEGS 16 23 #define LPFC_NVME_DEFAULT_SEGS 66 /* 256K IOs - 64 + 2 */ 24 #define LPFC_NVME_MAX_SEGS 510 25 #define LPFC_NVMET_MIN_POSTBUF 16 26 #define LPFC_NVMET_DEFAULT_POSTBUF 1024 27 #define LPFC_NVMET_MAX_POSTBUF 4096 28 #define LPFC_NVME_WQSIZE 256 29 30 #define LPFC_NVME_ERSP_LEN 0x20 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 list_head rport_list; 42 struct completion lport_unreg_done; 43 /* Add sttats counters here */ 44 }; 45 46 struct lpfc_nvme_rport { 47 struct list_head list; 48 struct lpfc_nvme_lport *lport; 49 struct nvme_fc_remote_port *remoteport; 50 struct lpfc_nodelist *ndlp; 51 struct completion rport_unreg_done; 52 }; 53 54 struct lpfc_nvme_buf { 55 struct list_head list; 56 struct nvmefc_fcp_req *nvmeCmd; 57 struct lpfc_nvme_rport *nrport; 58 59 uint32_t timeout; 60 61 uint16_t flags; /* TBD convert exch_busy to flags */ 62 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ 63 uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ 64 uint16_t status; /* From IOCB Word 7- ulpStatus */ 65 uint16_t cpu; 66 uint16_t qidx; 67 uint16_t sqid; 68 uint32_t result; /* From IOCB Word 4. */ 69 70 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 71 * dma_map_sg. The driver needs this for calls 72 * to dma_unmap_sg. 73 */ 74 dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ 75 76 /* 77 * data and dma_handle are the kernel virtual and bus address of the 78 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter 79 * gather bde list that supports the sg_tablesize value. 80 */ 81 void *data; 82 dma_addr_t dma_handle; 83 84 struct sli4_sge *nvme_sgl; 85 dma_addr_t dma_phys_sgl; 86 87 /* cur_iocbq has phys of the dma-able buffer. 88 * Iotag is in here 89 */ 90 struct lpfc_iocbq cur_iocbq; 91 92 wait_queue_head_t *waitq; 93 unsigned long start_time; 94 }; 95