101649561SJames Smart /******************************************************************* 201649561SJames Smart * This file is part of the Emulex Linux Device Driver for * 301649561SJames Smart * Fibre Channel Host Bus Adapters. * 4d080abe0SJames Smart * Copyright (C) 2017 Broadcom. All Rights Reserved. The term * 5d080abe0SJames Smart * “Broadcom” refers to Broadcom Limited and/or its subsidiaries. * 601649561SJames Smart * Copyright (C) 2004-2016 Emulex. All rights reserved. * 701649561SJames Smart * EMULEX and SLI are trademarks of Emulex. * 8d080abe0SJames Smart * www.broadcom.com * 901649561SJames Smart * Portions Copyright (C) 2004-2005 Christoph Hellwig * 1001649561SJames Smart * * 1101649561SJames Smart * This program is free software; you can redistribute it and/or * 1201649561SJames Smart * modify it under the terms of version 2 of the GNU General * 1301649561SJames Smart * Public License as published by the Free Software Foundation. * 1401649561SJames Smart * This program is distributed in the hope that it will be useful. * 1501649561SJames Smart * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 1601649561SJames Smart * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 1701649561SJames Smart * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 1801649561SJames Smart * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 1901649561SJames Smart * TO BE LEGALLY INVALID. See the GNU General Public License for * 2001649561SJames Smart * more details, a copy of which can be found in the file COPYING * 2101649561SJames Smart * included with this package. * 2201649561SJames Smart ********************************************************************/ 2301649561SJames Smart #include <linux/pci.h> 2401649561SJames Smart #include <linux/slab.h> 2501649561SJames Smart #include <linux/interrupt.h> 2601649561SJames Smart #include <linux/delay.h> 2701649561SJames Smart #include <asm/unaligned.h> 2801649561SJames Smart #include <linux/crc-t10dif.h> 2901649561SJames Smart #include <net/checksum.h> 3001649561SJames Smart 3101649561SJames Smart #include <scsi/scsi.h> 3201649561SJames Smart #include <scsi/scsi_device.h> 3301649561SJames Smart #include <scsi/scsi_eh.h> 3401649561SJames Smart #include <scsi/scsi_host.h> 3501649561SJames Smart #include <scsi/scsi_tcq.h> 3601649561SJames Smart #include <scsi/scsi_transport_fc.h> 3701649561SJames Smart #include <scsi/fc/fc_fs.h> 3801649561SJames Smart 3901649561SJames Smart #include <linux/nvme.h> 4001649561SJames Smart #include <linux/nvme-fc-driver.h> 4101649561SJames Smart #include <linux/nvme-fc.h> 4201649561SJames Smart #include "lpfc_version.h" 4301649561SJames Smart #include "lpfc_hw4.h" 4401649561SJames Smart #include "lpfc_hw.h" 4501649561SJames Smart #include "lpfc_sli.h" 4601649561SJames Smart #include "lpfc_sli4.h" 4701649561SJames Smart #include "lpfc_nl.h" 4801649561SJames Smart #include "lpfc_disc.h" 4901649561SJames Smart #include "lpfc.h" 5001649561SJames Smart #include "lpfc_nvme.h" 5101649561SJames Smart #include "lpfc_scsi.h" 5201649561SJames Smart #include "lpfc_logmsg.h" 5301649561SJames Smart #include "lpfc_crtn.h" 5401649561SJames Smart #include "lpfc_vport.h" 55bd2cdd5eSJames Smart #include "lpfc_debugfs.h" 5601649561SJames Smart 5701649561SJames Smart /* NVME initiator-based functions */ 5801649561SJames Smart 5901649561SJames Smart static struct lpfc_nvme_buf * 60*cf1a1d3eSJames Smart lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 61*cf1a1d3eSJames Smart int expedite); 6201649561SJames Smart 6301649561SJames Smart static void 6401649561SJames Smart lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_nvme_buf *); 6501649561SJames Smart 6681e6a637SJames Smart static struct nvme_fc_port_template lpfc_nvme_template; 6701649561SJames Smart 6801649561SJames Smart /** 6901649561SJames Smart * lpfc_nvme_create_queue - 7001649561SJames Smart * @lpfc_pnvme: Pointer to the driver's nvme instance data 7101649561SJames Smart * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. 7201649561SJames Smart * @handle: An opaque driver handle used in follow-up calls. 7301649561SJames Smart * 7401649561SJames Smart * Driver registers this routine to preallocate and initialize any 7501649561SJames Smart * internal data structures to bind the @qidx to its internal IO queues. 7601649561SJames Smart * A hardware queue maps (qidx) to a specific driver MSI-X vector/EQ/CQ/WQ. 7701649561SJames Smart * 7801649561SJames Smart * Return value : 7901649561SJames Smart * 0 - Success 8001649561SJames Smart * -EINVAL - Unsupported input value. 8101649561SJames Smart * -ENOMEM - Could not alloc necessary memory 8201649561SJames Smart **/ 8301649561SJames Smart static int 8401649561SJames Smart lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport, 8501649561SJames Smart unsigned int qidx, u16 qsize, 8601649561SJames Smart void **handle) 8701649561SJames Smart { 8801649561SJames Smart struct lpfc_nvme_lport *lport; 8901649561SJames Smart struct lpfc_vport *vport; 9001649561SJames Smart struct lpfc_nvme_qhandle *qhandle; 9101649561SJames Smart char *str; 9201649561SJames Smart 93c3725bdcSJames Smart if (!pnvme_lport->private) 94c3725bdcSJames Smart return -ENOMEM; 95c3725bdcSJames Smart 9601649561SJames Smart lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 9701649561SJames Smart vport = lport->vport; 9801649561SJames Smart qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL); 9901649561SJames Smart if (qhandle == NULL) 10001649561SJames Smart return -ENOMEM; 10101649561SJames Smart 10201649561SJames Smart qhandle->cpu_id = smp_processor_id(); 10301649561SJames Smart qhandle->qidx = qidx; 10401649561SJames Smart /* 10501649561SJames Smart * NVME qidx == 0 is the admin queue, so both admin queue 10601649561SJames Smart * and first IO queue will use MSI-X vector and associated 10701649561SJames Smart * EQ/CQ/WQ at index 0. After that they are sequentially assigned. 10801649561SJames Smart */ 10901649561SJames Smart if (qidx) { 11001649561SJames Smart str = "IO "; /* IO queue */ 11101649561SJames Smart qhandle->index = ((qidx - 1) % 11201649561SJames Smart vport->phba->cfg_nvme_io_channel); 11301649561SJames Smart } else { 11401649561SJames Smart str = "ADM"; /* Admin queue */ 11501649561SJames Smart qhandle->index = qidx; 11601649561SJames Smart } 11701649561SJames Smart 118d58734f0SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 11901649561SJames Smart "6073 Binding %s HdwQueue %d (cpu %d) to " 12001649561SJames Smart "io_channel %d qhandle %p\n", str, 12101649561SJames Smart qidx, qhandle->cpu_id, qhandle->index, qhandle); 12201649561SJames Smart *handle = (void *)qhandle; 12301649561SJames Smart return 0; 12401649561SJames Smart } 12501649561SJames Smart 12601649561SJames Smart /** 12701649561SJames Smart * lpfc_nvme_delete_queue - 12801649561SJames Smart * @lpfc_pnvme: Pointer to the driver's nvme instance data 12901649561SJames Smart * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. 13001649561SJames Smart * @handle: An opaque driver handle from lpfc_nvme_create_queue 13101649561SJames Smart * 13201649561SJames Smart * Driver registers this routine to free 13301649561SJames Smart * any internal data structures to bind the @qidx to its internal 13401649561SJames Smart * IO queues. 13501649561SJames Smart * 13601649561SJames Smart * Return value : 13701649561SJames Smart * 0 - Success 13801649561SJames Smart * TODO: What are the failure codes. 13901649561SJames Smart **/ 14001649561SJames Smart static void 14101649561SJames Smart lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport, 14201649561SJames Smart unsigned int qidx, 14301649561SJames Smart void *handle) 14401649561SJames Smart { 14501649561SJames Smart struct lpfc_nvme_lport *lport; 14601649561SJames Smart struct lpfc_vport *vport; 14701649561SJames Smart 148c3725bdcSJames Smart if (!pnvme_lport->private) 149c3725bdcSJames Smart return; 150c3725bdcSJames Smart 15101649561SJames Smart lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 15201649561SJames Smart vport = lport->vport; 15301649561SJames Smart 15401649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 15501649561SJames Smart "6001 ENTER. lpfc_pnvme %p, qidx x%xi qhandle %p\n", 15601649561SJames Smart lport, qidx, handle); 15701649561SJames Smart kfree(handle); 15801649561SJames Smart } 15901649561SJames Smart 16001649561SJames Smart static void 16101649561SJames Smart lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport) 16201649561SJames Smart { 16301649561SJames Smart struct lpfc_nvme_lport *lport = localport->private; 16401649561SJames Smart 165add9d6beSJames Smart lpfc_printf_vlog(lport->vport, KERN_INFO, LOG_NVME, 166add9d6beSJames Smart "6173 localport %p delete complete\n", 167add9d6beSJames Smart lport); 168add9d6beSJames Smart 16901649561SJames Smart /* release any threads waiting for the unreg to complete */ 17001649561SJames Smart complete(&lport->lport_unreg_done); 17101649561SJames Smart } 17201649561SJames Smart 17301649561SJames Smart /* lpfc_nvme_remoteport_delete 17401649561SJames Smart * 17501649561SJames Smart * @remoteport: Pointer to an nvme transport remoteport instance. 17601649561SJames Smart * 17701649561SJames Smart * This is a template downcall. NVME transport calls this function 17801649561SJames Smart * when it has completed the unregistration of a previously 17901649561SJames Smart * registered remoteport. 18001649561SJames Smart * 18101649561SJames Smart * Return value : 18201649561SJames Smart * None 18301649561SJames Smart */ 18401649561SJames Smart void 18501649561SJames Smart lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport) 18601649561SJames Smart { 18701649561SJames Smart struct lpfc_nvme_rport *rport = remoteport->private; 18801649561SJames Smart struct lpfc_vport *vport; 18901649561SJames Smart struct lpfc_nodelist *ndlp; 19001649561SJames Smart 19101649561SJames Smart ndlp = rport->ndlp; 19201649561SJames Smart if (!ndlp) 19301649561SJames Smart goto rport_err; 19401649561SJames Smart 19501649561SJames Smart vport = ndlp->vport; 19601649561SJames Smart if (!vport) 19701649561SJames Smart goto rport_err; 19801649561SJames Smart 19901649561SJames Smart /* Remove this rport from the lport's list - memory is owned by the 20001649561SJames Smart * transport. Remove the ndlp reference for the NVME transport before 2017a06dcd3SJames Smart * calling state machine to remove the node. 20201649561SJames Smart */ 20301649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 20401649561SJames Smart "6146 remoteport delete complete %p\n", 20501649561SJames Smart remoteport); 2067a06dcd3SJames Smart ndlp->nrport = NULL; 20701649561SJames Smart lpfc_nlp_put(ndlp); 20801649561SJames Smart 20901649561SJames Smart rport_err: 21001649561SJames Smart /* This call has to execute as long as the rport is valid. 21101649561SJames Smart * Release any threads waiting for the unreg to complete. 21201649561SJames Smart */ 21301649561SJames Smart complete(&rport->rport_unreg_done); 21401649561SJames Smart } 21501649561SJames Smart 21601649561SJames Smart static void 21701649561SJames Smart lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 21801649561SJames Smart struct lpfc_wcqe_complete *wcqe) 21901649561SJames Smart { 22001649561SJames Smart struct lpfc_vport *vport = cmdwqe->vport; 22101649561SJames Smart uint32_t status; 22201649561SJames Smart struct nvmefc_ls_req *pnvme_lsreq; 22301649561SJames Smart struct lpfc_dmabuf *buf_ptr; 22401649561SJames Smart struct lpfc_nodelist *ndlp; 22501649561SJames Smart 2262cee7808SJames Smart atomic_inc(&vport->phba->fc4NvmeLsCmpls); 22701649561SJames Smart 22801649561SJames Smart pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2; 22901649561SJames Smart status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK; 23001649561SJames Smart ndlp = (struct lpfc_nodelist *)cmdwqe->context1; 23101649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 23201649561SJames Smart "6047 nvme cmpl Enter " 23301649561SJames Smart "Data %p DID %x Xri: %x status %x cmd:%p lsreg:%p " 23401649561SJames Smart "bmp:%p ndlp:%p\n", 23501649561SJames Smart pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 23601649561SJames Smart cmdwqe->sli4_xritag, status, 23701649561SJames Smart cmdwqe, pnvme_lsreq, cmdwqe->context3, ndlp); 23801649561SJames Smart 239bd2cdd5eSJames Smart lpfc_nvmeio_data(phba, "NVME LS CMPL: xri x%x stat x%x parm x%x\n", 240bd2cdd5eSJames Smart cmdwqe->sli4_xritag, status, wcqe->parameter); 241bd2cdd5eSJames Smart 24201649561SJames Smart if (cmdwqe->context3) { 24301649561SJames Smart buf_ptr = (struct lpfc_dmabuf *)cmdwqe->context3; 24401649561SJames Smart lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 24501649561SJames Smart kfree(buf_ptr); 24601649561SJames Smart cmdwqe->context3 = NULL; 24701649561SJames Smart } 24801649561SJames Smart if (pnvme_lsreq->done) 24901649561SJames Smart pnvme_lsreq->done(pnvme_lsreq, status); 25001649561SJames Smart else 25101649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 25201649561SJames Smart "6046 nvme cmpl without done call back? " 25301649561SJames Smart "Data %p DID %x Xri: %x status %x\n", 25401649561SJames Smart pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 25501649561SJames Smart cmdwqe->sli4_xritag, status); 25601649561SJames Smart if (ndlp) { 25701649561SJames Smart lpfc_nlp_put(ndlp); 25801649561SJames Smart cmdwqe->context1 = NULL; 25901649561SJames Smart } 26001649561SJames Smart lpfc_sli_release_iocbq(phba, cmdwqe); 26101649561SJames Smart } 26201649561SJames Smart 26301649561SJames Smart static int 26401649561SJames Smart lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp, 26501649561SJames Smart struct lpfc_dmabuf *inp, 26601649561SJames Smart struct nvmefc_ls_req *pnvme_lsreq, 26701649561SJames Smart void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 26801649561SJames Smart struct lpfc_wcqe_complete *), 26901649561SJames Smart struct lpfc_nodelist *ndlp, uint32_t num_entry, 27001649561SJames Smart uint32_t tmo, uint8_t retry) 27101649561SJames Smart { 27201649561SJames Smart struct lpfc_hba *phba = vport->phba; 27301649561SJames Smart union lpfc_wqe *wqe; 27401649561SJames Smart struct lpfc_iocbq *genwqe; 27501649561SJames Smart struct ulp_bde64 *bpl; 27601649561SJames Smart struct ulp_bde64 bde; 27701649561SJames Smart int i, rc, xmit_len, first_len; 27801649561SJames Smart 27901649561SJames Smart /* Allocate buffer for command WQE */ 28001649561SJames Smart genwqe = lpfc_sli_get_iocbq(phba); 28101649561SJames Smart if (genwqe == NULL) 28201649561SJames Smart return 1; 28301649561SJames Smart 28401649561SJames Smart wqe = &genwqe->wqe; 28501649561SJames Smart memset(wqe, 0, sizeof(union lpfc_wqe)); 28601649561SJames Smart 28701649561SJames Smart genwqe->context3 = (uint8_t *)bmp; 28801649561SJames Smart genwqe->iocb_flag |= LPFC_IO_NVME_LS; 28901649561SJames Smart 29001649561SJames Smart /* Save for completion so we can release these resources */ 29101649561SJames Smart genwqe->context1 = lpfc_nlp_get(ndlp); 29201649561SJames Smart genwqe->context2 = (uint8_t *)pnvme_lsreq; 29301649561SJames Smart /* Fill in payload, bp points to frame payload */ 29401649561SJames Smart 29501649561SJames Smart if (!tmo) 29601649561SJames Smart /* FC spec states we need 3 * ratov for CT requests */ 29701649561SJames Smart tmo = (3 * phba->fc_ratov); 29801649561SJames Smart 29901649561SJames Smart /* For this command calculate the xmit length of the request bde. */ 30001649561SJames Smart xmit_len = 0; 30101649561SJames Smart first_len = 0; 30201649561SJames Smart bpl = (struct ulp_bde64 *)bmp->virt; 30301649561SJames Smart for (i = 0; i < num_entry; i++) { 30401649561SJames Smart bde.tus.w = bpl[i].tus.w; 30501649561SJames Smart if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) 30601649561SJames Smart break; 30701649561SJames Smart xmit_len += bde.tus.f.bdeSize; 30801649561SJames Smart if (i == 0) 30901649561SJames Smart first_len = xmit_len; 31001649561SJames Smart } 31101649561SJames Smart 31201649561SJames Smart genwqe->rsvd2 = num_entry; 31301649561SJames Smart genwqe->hba_wqidx = 0; 31401649561SJames Smart 31501649561SJames Smart /* Words 0 - 2 */ 31601649561SJames Smart wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 31701649561SJames Smart wqe->generic.bde.tus.f.bdeSize = first_len; 31801649561SJames Smart wqe->generic.bde.addrLow = bpl[0].addrLow; 31901649561SJames Smart wqe->generic.bde.addrHigh = bpl[0].addrHigh; 32001649561SJames Smart 32101649561SJames Smart /* Word 3 */ 32201649561SJames Smart wqe->gen_req.request_payload_len = first_len; 32301649561SJames Smart 32401649561SJames Smart /* Word 4 */ 32501649561SJames Smart 32601649561SJames Smart /* Word 5 */ 32701649561SJames Smart bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0); 32801649561SJames Smart bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1); 32901649561SJames Smart bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1); 3308b361639SJames Smart bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ); 33101649561SJames Smart bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME); 33201649561SJames Smart 33301649561SJames Smart /* Word 6 */ 33401649561SJames Smart bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com, 33501649561SJames Smart phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 33601649561SJames Smart bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag); 33701649561SJames Smart 33801649561SJames Smart /* Word 7 */ 33901649561SJames Smart bf_set(wqe_tmo, &wqe->gen_req.wqe_com, (vport->phba->fc_ratov-1)); 34001649561SJames Smart bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3); 34101649561SJames Smart bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE); 34201649561SJames Smart bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI); 34301649561SJames Smart 34401649561SJames Smart /* Word 8 */ 34501649561SJames Smart wqe->gen_req.wqe_com.abort_tag = genwqe->iotag; 34601649561SJames Smart 34701649561SJames Smart /* Word 9 */ 34801649561SJames Smart bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag); 34901649561SJames Smart 35001649561SJames Smart /* Word 10 */ 35101649561SJames Smart bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1); 35201649561SJames Smart bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ); 35301649561SJames Smart bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1); 35401649561SJames Smart bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE); 35501649561SJames Smart bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0); 35601649561SJames Smart 35701649561SJames Smart /* Word 11 */ 35801649561SJames Smart bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 35901649561SJames Smart bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND); 36001649561SJames Smart 36101649561SJames Smart 36201649561SJames Smart /* Issue GEN REQ WQE for NPORT <did> */ 36301649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 36401649561SJames Smart "6050 Issue GEN REQ WQE to NPORT x%x " 36501649561SJames Smart "Data: x%x x%x wq:%p lsreq:%p bmp:%p xmit:%d 1st:%d\n", 36601649561SJames Smart ndlp->nlp_DID, genwqe->iotag, 36701649561SJames Smart vport->port_state, 36801649561SJames Smart genwqe, pnvme_lsreq, bmp, xmit_len, first_len); 36901649561SJames Smart genwqe->wqe_cmpl = cmpl; 37001649561SJames Smart genwqe->iocb_cmpl = NULL; 37101649561SJames Smart genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT; 37201649561SJames Smart genwqe->vport = vport; 37301649561SJames Smart genwqe->retry = retry; 37401649561SJames Smart 375bd2cdd5eSJames Smart lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n", 376bd2cdd5eSJames Smart genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID); 377bd2cdd5eSJames Smart 37801649561SJames Smart rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, genwqe); 379cd22d605SDick Kennedy if (rc) { 38001649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 38101649561SJames Smart "6045 Issue GEN REQ WQE to NPORT x%x " 38201649561SJames Smart "Data: x%x x%x\n", 38301649561SJames Smart ndlp->nlp_DID, genwqe->iotag, 38401649561SJames Smart vport->port_state); 38501649561SJames Smart lpfc_sli_release_iocbq(phba, genwqe); 38601649561SJames Smart return 1; 38701649561SJames Smart } 38801649561SJames Smart return 0; 38901649561SJames Smart } 39001649561SJames Smart 39101649561SJames Smart /** 39201649561SJames Smart * lpfc_nvme_ls_req - Issue an Link Service request 39301649561SJames Smart * @lpfc_pnvme: Pointer to the driver's nvme instance data 39401649561SJames Smart * @lpfc_nvme_lport: Pointer to the driver's local port data 39501649561SJames Smart * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 39601649561SJames Smart * 39701649561SJames Smart * Driver registers this routine to handle any link service request 39801649561SJames Smart * from the nvme_fc transport to a remote nvme-aware port. 39901649561SJames Smart * 40001649561SJames Smart * Return value : 40101649561SJames Smart * 0 - Success 40201649561SJames Smart * TODO: What are the failure codes. 40301649561SJames Smart **/ 40401649561SJames Smart static int 40501649561SJames Smart lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport, 40601649561SJames Smart struct nvme_fc_remote_port *pnvme_rport, 40701649561SJames Smart struct nvmefc_ls_req *pnvme_lsreq) 40801649561SJames Smart { 40901649561SJames Smart int ret = 0; 41001649561SJames Smart struct lpfc_nvme_lport *lport; 41101649561SJames Smart struct lpfc_vport *vport; 41201649561SJames Smart struct lpfc_nodelist *ndlp; 41301649561SJames Smart struct ulp_bde64 *bpl; 41401649561SJames Smart struct lpfc_dmabuf *bmp; 415ba43c4d0SJames Smart uint16_t ntype, nstate; 41601649561SJames Smart 41701649561SJames Smart /* there are two dma buf in the request, actually there is one and 41801649561SJames Smart * the second one is just the start address + cmd size. 41901649561SJames Smart * Before calling lpfc_nvme_gen_req these buffers need to be wrapped 42001649561SJames Smart * in a lpfc_dmabuf struct. When freeing we just free the wrapper 42101649561SJames Smart * because the nvem layer owns the data bufs. 42201649561SJames Smart * We do not have to break these packets open, we don't care what is in 42301649561SJames Smart * them. And we do not have to look at the resonse data, we only care 42401649561SJames Smart * that we got a response. All of the caring is going to happen in the 42501649561SJames Smart * nvme-fc layer. 42601649561SJames Smart */ 42701649561SJames Smart 42801649561SJames Smart lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 42901649561SJames Smart vport = lport->vport; 43001649561SJames Smart 4311abcb371SDick Kennedy if (vport->load_flag & FC_UNLOADING) 4321abcb371SDick Kennedy return -ENODEV; 4331abcb371SDick Kennedy 4343386f4bdSJames Smart if (vport->load_flag & FC_UNLOADING) 4353386f4bdSJames Smart return -ENODEV; 4363386f4bdSJames Smart 43701649561SJames Smart ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); 438ba43c4d0SJames Smart if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 439ba43c4d0SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 440ba43c4d0SJames Smart "6051 DID x%06x not an active rport.\n", 44101649561SJames Smart pnvme_rport->port_id); 442ba43c4d0SJames Smart return -ENODEV; 443ba43c4d0SJames Smart } 444ba43c4d0SJames Smart 445ba43c4d0SJames Smart /* The remote node has to be a mapped nvme target or an 446ba43c4d0SJames Smart * unmapped nvme initiator or it's an error. 447ba43c4d0SJames Smart */ 448ba43c4d0SJames Smart ntype = ndlp->nlp_type; 449ba43c4d0SJames Smart nstate = ndlp->nlp_state; 450ba43c4d0SJames Smart if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) || 451ba43c4d0SJames Smart (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) { 452ba43c4d0SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 453ba43c4d0SJames Smart "6088 DID x%06x not ready for " 454ba43c4d0SJames Smart "IO. State x%x, Type x%x\n", 455ba43c4d0SJames Smart pnvme_rport->port_id, 456ba43c4d0SJames Smart ndlp->nlp_state, ndlp->nlp_type); 457ba43c4d0SJames Smart return -ENODEV; 45801649561SJames Smart } 45901649561SJames Smart bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 46001649561SJames Smart if (!bmp) { 46101649561SJames Smart 46201649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 46301649561SJames Smart "6044 Could not find node for DID %x\n", 46401649561SJames Smart pnvme_rport->port_id); 46501649561SJames Smart return 2; 46601649561SJames Smart } 46701649561SJames Smart INIT_LIST_HEAD(&bmp->list); 46801649561SJames Smart bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys)); 46901649561SJames Smart if (!bmp->virt) { 47001649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 47101649561SJames Smart "6042 Could not find node for DID %x\n", 47201649561SJames Smart pnvme_rport->port_id); 47301649561SJames Smart kfree(bmp); 47401649561SJames Smart return 3; 47501649561SJames Smart } 47601649561SJames Smart bpl = (struct ulp_bde64 *)bmp->virt; 47701649561SJames Smart bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma)); 47801649561SJames Smart bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma)); 47901649561SJames Smart bpl->tus.f.bdeFlags = 0; 48001649561SJames Smart bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen; 48101649561SJames Smart bpl->tus.w = le32_to_cpu(bpl->tus.w); 48201649561SJames Smart bpl++; 48301649561SJames Smart 48401649561SJames Smart bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma)); 48501649561SJames Smart bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma)); 48601649561SJames Smart bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 48701649561SJames Smart bpl->tus.f.bdeSize = pnvme_lsreq->rsplen; 48801649561SJames Smart bpl->tus.w = le32_to_cpu(bpl->tus.w); 48901649561SJames Smart 49001649561SJames Smart /* Expand print to include key fields. */ 49101649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 492ba43c4d0SJames Smart "6149 ENTER. lport %p, rport %p lsreq%p rqstlen:%d " 493825c6abbSArnd Bergmann "rsplen:%d %pad %pad\n", 49401649561SJames Smart pnvme_lport, pnvme_rport, 49501649561SJames Smart pnvme_lsreq, pnvme_lsreq->rqstlen, 496825c6abbSArnd Bergmann pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 497825c6abbSArnd Bergmann &pnvme_lsreq->rspdma); 49801649561SJames Smart 4992cee7808SJames Smart atomic_inc(&vport->phba->fc4NvmeLsRequests); 50001649561SJames Smart 50101649561SJames Smart /* Hardcode the wait to 30 seconds. Connections are failing otherwise. 50201649561SJames Smart * This code allows it all to work. 50301649561SJames Smart */ 50401649561SJames Smart ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr, 50501649561SJames Smart pnvme_lsreq, lpfc_nvme_cmpl_gen_req, 50601649561SJames Smart ndlp, 2, 30, 0); 50701649561SJames Smart if (ret != WQE_SUCCESS) { 50801649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 50901649561SJames Smart "6052 EXIT. issue ls wqe failed lport %p, " 51001649561SJames Smart "rport %p lsreq%p Status %x DID %x\n", 51101649561SJames Smart pnvme_lport, pnvme_rport, pnvme_lsreq, 51201649561SJames Smart ret, ndlp->nlp_DID); 51301649561SJames Smart lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys); 51401649561SJames Smart kfree(bmp); 51501649561SJames Smart return ret; 51601649561SJames Smart } 51701649561SJames Smart 51801649561SJames Smart /* Stub in routine and return 0 for now. */ 51901649561SJames Smart return ret; 52001649561SJames Smart } 52101649561SJames Smart 52201649561SJames Smart /** 52301649561SJames Smart * lpfc_nvme_ls_abort - Issue an Link Service request 52401649561SJames Smart * @lpfc_pnvme: Pointer to the driver's nvme instance data 52501649561SJames Smart * @lpfc_nvme_lport: Pointer to the driver's local port data 52601649561SJames Smart * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 52701649561SJames Smart * 52801649561SJames Smart * Driver registers this routine to handle any link service request 52901649561SJames Smart * from the nvme_fc transport to a remote nvme-aware port. 53001649561SJames Smart * 53101649561SJames Smart * Return value : 53201649561SJames Smart * 0 - Success 53301649561SJames Smart * TODO: What are the failure codes. 53401649561SJames Smart **/ 53501649561SJames Smart static void 53601649561SJames Smart lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport, 53701649561SJames Smart struct nvme_fc_remote_port *pnvme_rport, 53801649561SJames Smart struct nvmefc_ls_req *pnvme_lsreq) 53901649561SJames Smart { 54001649561SJames Smart struct lpfc_nvme_lport *lport; 54101649561SJames Smart struct lpfc_vport *vport; 54201649561SJames Smart struct lpfc_hba *phba; 54301649561SJames Smart struct lpfc_nodelist *ndlp; 54401649561SJames Smart LIST_HEAD(abort_list); 54501649561SJames Smart struct lpfc_sli_ring *pring; 54601649561SJames Smart struct lpfc_iocbq *wqe, *next_wqe; 54701649561SJames Smart 54801649561SJames Smart lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 54901649561SJames Smart vport = lport->vport; 55001649561SJames Smart phba = vport->phba; 55101649561SJames Smart 5523386f4bdSJames Smart if (vport->load_flag & FC_UNLOADING) 5533386f4bdSJames Smart return; 5543386f4bdSJames Smart 55501649561SJames Smart ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); 55601649561SJames Smart if (!ndlp) { 55701649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 55801649561SJames Smart "6049 Could not find node for DID %x\n", 55901649561SJames Smart pnvme_rport->port_id); 56001649561SJames Smart return; 56101649561SJames Smart } 56201649561SJames Smart 56301649561SJames Smart /* Expand print to include key fields. */ 56401649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 56501649561SJames Smart "6040 ENTER. lport %p, rport %p lsreq %p rqstlen:%d " 566825c6abbSArnd Bergmann "rsplen:%d %pad %pad\n", 56701649561SJames Smart pnvme_lport, pnvme_rport, 56801649561SJames Smart pnvme_lsreq, pnvme_lsreq->rqstlen, 569825c6abbSArnd Bergmann pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 570825c6abbSArnd Bergmann &pnvme_lsreq->rspdma); 57101649561SJames Smart 57201649561SJames Smart /* 57301649561SJames Smart * Lock the ELS ring txcmplq and build a local list of all ELS IOs 57401649561SJames Smart * that need an ABTS. The IOs need to stay on the txcmplq so that 57501649561SJames Smart * the abort operation completes them successfully. 57601649561SJames Smart */ 57701649561SJames Smart pring = phba->sli4_hba.nvmels_wq->pring; 57801649561SJames Smart spin_lock_irq(&phba->hbalock); 57901649561SJames Smart spin_lock(&pring->ring_lock); 58001649561SJames Smart list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) { 58101649561SJames Smart /* Add to abort_list on on NDLP match. */ 58201649561SJames Smart if (lpfc_check_sli_ndlp(phba, pring, wqe, ndlp)) { 58301649561SJames Smart wqe->iocb_flag |= LPFC_DRIVER_ABORTED; 58401649561SJames Smart list_add_tail(&wqe->dlist, &abort_list); 58501649561SJames Smart } 58601649561SJames Smart } 58701649561SJames Smart spin_unlock(&pring->ring_lock); 58801649561SJames Smart spin_unlock_irq(&phba->hbalock); 58901649561SJames Smart 59001649561SJames Smart /* Abort the targeted IOs and remove them from the abort list. */ 59101649561SJames Smart list_for_each_entry_safe(wqe, next_wqe, &abort_list, dlist) { 59201649561SJames Smart spin_lock_irq(&phba->hbalock); 59301649561SJames Smart list_del_init(&wqe->dlist); 59401649561SJames Smart lpfc_sli_issue_abort_iotag(phba, pring, wqe); 59501649561SJames Smart spin_unlock_irq(&phba->hbalock); 59601649561SJames Smart } 59701649561SJames Smart } 59801649561SJames Smart 59901649561SJames Smart /* Fix up the existing sgls for NVME IO. */ 60001649561SJames Smart static void 60101649561SJames Smart lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport, 60201649561SJames Smart struct lpfc_nvme_buf *lpfc_ncmd, 60301649561SJames Smart struct nvmefc_fcp_req *nCmd) 60401649561SJames Smart { 60501649561SJames Smart struct sli4_sge *sgl; 60601649561SJames Smart union lpfc_wqe128 *wqe; 60701649561SJames Smart uint32_t *wptr, *dptr; 60801649561SJames Smart 60901649561SJames Smart /* 61001649561SJames Smart * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to 61101649561SJames Smart * match NVME. NVME sends 96 bytes. Also, use the 61201649561SJames Smart * nvme commands command and response dma addresses 61301649561SJames Smart * rather than the virtual memory to ease the restore 61401649561SJames Smart * operation. 61501649561SJames Smart */ 61601649561SJames Smart sgl = lpfc_ncmd->nvme_sgl; 61701649561SJames Smart sgl->sge_len = cpu_to_le32(nCmd->cmdlen); 61801649561SJames Smart 61901649561SJames Smart sgl++; 62001649561SJames Smart 62101649561SJames Smart /* Setup the physical region for the FCP RSP */ 62201649561SJames Smart sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma)); 62301649561SJames Smart sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma)); 62401649561SJames Smart sgl->word2 = le32_to_cpu(sgl->word2); 62501649561SJames Smart if (nCmd->sg_cnt) 62601649561SJames Smart bf_set(lpfc_sli4_sge_last, sgl, 0); 62701649561SJames Smart else 62801649561SJames Smart bf_set(lpfc_sli4_sge_last, sgl, 1); 62901649561SJames Smart sgl->word2 = cpu_to_le32(sgl->word2); 63001649561SJames Smart sgl->sge_len = cpu_to_le32(nCmd->rsplen); 63101649561SJames Smart 63201649561SJames Smart /* 63301649561SJames Smart * Get a local pointer to the built-in wqe and correct 63401649561SJames Smart * the cmd size to match NVME's 96 bytes and fix 63501649561SJames Smart * the dma address. 63601649561SJames Smart */ 63701649561SJames Smart 63801649561SJames Smart /* 128 byte wqe support here */ 63901649561SJames Smart wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe; 64001649561SJames Smart 64101649561SJames Smart /* Word 0-2 - NVME CMND IU (embedded payload) */ 64201649561SJames Smart wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED; 64301649561SJames Smart wqe->generic.bde.tus.f.bdeSize = 60; 64401649561SJames Smart wqe->generic.bde.addrHigh = 0; 64501649561SJames Smart wqe->generic.bde.addrLow = 64; /* Word 16 */ 64601649561SJames Smart 64701649561SJames Smart /* Word 3 */ 64801649561SJames Smart bf_set(payload_offset_len, &wqe->fcp_icmd, 64901649561SJames Smart (nCmd->rsplen + nCmd->cmdlen)); 65001649561SJames Smart 65101649561SJames Smart /* Word 10 */ 65201649561SJames Smart bf_set(wqe_nvme, &wqe->fcp_icmd.wqe_com, 1); 65301649561SJames Smart bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1); 65401649561SJames Smart 65501649561SJames Smart /* 65601649561SJames Smart * Embed the payload in the last half of the WQE 65701649561SJames Smart * WQE words 16-30 get the NVME CMD IU payload 65801649561SJames Smart * 659b06a622fSJames Smart * WQE words 16-19 get payload Words 1-4 66001649561SJames Smart * WQE words 20-21 get payload Words 6-7 66101649561SJames Smart * WQE words 22-29 get payload Words 16-23 66201649561SJames Smart */ 663b06a622fSJames Smart wptr = &wqe->words[16]; /* WQE ptr */ 66401649561SJames Smart dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */ 665b06a622fSJames Smart dptr++; /* Skip Word 0 in payload */ 66601649561SJames Smart 667b06a622fSJames Smart *wptr++ = *dptr++; /* Word 1 */ 66801649561SJames Smart *wptr++ = *dptr++; /* Word 2 */ 66901649561SJames Smart *wptr++ = *dptr++; /* Word 3 */ 67001649561SJames Smart *wptr++ = *dptr++; /* Word 4 */ 67101649561SJames Smart dptr++; /* Skip Word 5 in payload */ 67201649561SJames Smart *wptr++ = *dptr++; /* Word 6 */ 67301649561SJames Smart *wptr++ = *dptr++; /* Word 7 */ 67401649561SJames Smart dptr += 8; /* Skip Words 8-15 in payload */ 67501649561SJames Smart *wptr++ = *dptr++; /* Word 16 */ 67601649561SJames Smart *wptr++ = *dptr++; /* Word 17 */ 67701649561SJames Smart *wptr++ = *dptr++; /* Word 18 */ 67801649561SJames Smart *wptr++ = *dptr++; /* Word 19 */ 67901649561SJames Smart *wptr++ = *dptr++; /* Word 20 */ 68001649561SJames Smart *wptr++ = *dptr++; /* Word 21 */ 68101649561SJames Smart *wptr++ = *dptr++; /* Word 22 */ 68201649561SJames Smart *wptr = *dptr; /* Word 23 */ 68301649561SJames Smart } 68401649561SJames Smart 685bd2cdd5eSJames Smart #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 686bd2cdd5eSJames Smart static void 687bd2cdd5eSJames Smart lpfc_nvme_ktime(struct lpfc_hba *phba, 688bd2cdd5eSJames Smart struct lpfc_nvme_buf *lpfc_ncmd) 689bd2cdd5eSJames Smart { 690bd2cdd5eSJames Smart uint64_t seg1, seg2, seg3, seg4; 691c8a4ce0bSDick Kennedy uint64_t segsum; 692bd2cdd5eSJames Smart 693bd2cdd5eSJames Smart if (!lpfc_ncmd->ts_last_cmd || 694bd2cdd5eSJames Smart !lpfc_ncmd->ts_cmd_start || 695bd2cdd5eSJames Smart !lpfc_ncmd->ts_cmd_wqput || 696bd2cdd5eSJames Smart !lpfc_ncmd->ts_isr_cmpl || 697bd2cdd5eSJames Smart !lpfc_ncmd->ts_data_nvme) 698bd2cdd5eSJames Smart return; 699c8a4ce0bSDick Kennedy 700c8a4ce0bSDick Kennedy if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_cmd_start) 701c8a4ce0bSDick Kennedy return; 702bd2cdd5eSJames Smart if (lpfc_ncmd->ts_cmd_start < lpfc_ncmd->ts_last_cmd) 703bd2cdd5eSJames Smart return; 704bd2cdd5eSJames Smart if (lpfc_ncmd->ts_cmd_wqput < lpfc_ncmd->ts_cmd_start) 705bd2cdd5eSJames Smart return; 706bd2cdd5eSJames Smart if (lpfc_ncmd->ts_isr_cmpl < lpfc_ncmd->ts_cmd_wqput) 707bd2cdd5eSJames Smart return; 708bd2cdd5eSJames Smart if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_isr_cmpl) 709bd2cdd5eSJames Smart return; 710bd2cdd5eSJames Smart /* 711bd2cdd5eSJames Smart * Segment 1 - Time from Last FCP command cmpl is handed 712bd2cdd5eSJames Smart * off to NVME Layer to start of next command. 713bd2cdd5eSJames Smart * Segment 2 - Time from Driver receives a IO cmd start 714bd2cdd5eSJames Smart * from NVME Layer to WQ put is done on IO cmd. 715bd2cdd5eSJames Smart * Segment 3 - Time from Driver WQ put is done on IO cmd 716bd2cdd5eSJames Smart * to MSI-X ISR for IO cmpl. 717bd2cdd5eSJames Smart * Segment 4 - Time from MSI-X ISR for IO cmpl to when 718bd2cdd5eSJames Smart * cmpl is handled off to the NVME Layer. 719bd2cdd5eSJames Smart */ 720bd2cdd5eSJames Smart seg1 = lpfc_ncmd->ts_cmd_start - lpfc_ncmd->ts_last_cmd; 721c8a4ce0bSDick Kennedy if (seg1 > 5000000) /* 5 ms - for sequential IOs only */ 722c8a4ce0bSDick Kennedy seg1 = 0; 723bd2cdd5eSJames Smart 724bd2cdd5eSJames Smart /* Calculate times relative to start of IO */ 725bd2cdd5eSJames Smart seg2 = (lpfc_ncmd->ts_cmd_wqput - lpfc_ncmd->ts_cmd_start); 726c8a4ce0bSDick Kennedy segsum = seg2; 727c8a4ce0bSDick Kennedy seg3 = lpfc_ncmd->ts_isr_cmpl - lpfc_ncmd->ts_cmd_start; 728c8a4ce0bSDick Kennedy if (segsum > seg3) 729c8a4ce0bSDick Kennedy return; 730c8a4ce0bSDick Kennedy seg3 -= segsum; 731c8a4ce0bSDick Kennedy segsum += seg3; 732c8a4ce0bSDick Kennedy 733c8a4ce0bSDick Kennedy seg4 = lpfc_ncmd->ts_data_nvme - lpfc_ncmd->ts_cmd_start; 734c8a4ce0bSDick Kennedy if (segsum > seg4) 735c8a4ce0bSDick Kennedy return; 736c8a4ce0bSDick Kennedy seg4 -= segsum; 737c8a4ce0bSDick Kennedy 738bd2cdd5eSJames Smart phba->ktime_data_samples++; 739bd2cdd5eSJames Smart phba->ktime_seg1_total += seg1; 740bd2cdd5eSJames Smart if (seg1 < phba->ktime_seg1_min) 741bd2cdd5eSJames Smart phba->ktime_seg1_min = seg1; 742bd2cdd5eSJames Smart else if (seg1 > phba->ktime_seg1_max) 743bd2cdd5eSJames Smart phba->ktime_seg1_max = seg1; 744bd2cdd5eSJames Smart phba->ktime_seg2_total += seg2; 745bd2cdd5eSJames Smart if (seg2 < phba->ktime_seg2_min) 746bd2cdd5eSJames Smart phba->ktime_seg2_min = seg2; 747bd2cdd5eSJames Smart else if (seg2 > phba->ktime_seg2_max) 748bd2cdd5eSJames Smart phba->ktime_seg2_max = seg2; 749bd2cdd5eSJames Smart phba->ktime_seg3_total += seg3; 750bd2cdd5eSJames Smart if (seg3 < phba->ktime_seg3_min) 751bd2cdd5eSJames Smart phba->ktime_seg3_min = seg3; 752bd2cdd5eSJames Smart else if (seg3 > phba->ktime_seg3_max) 753bd2cdd5eSJames Smart phba->ktime_seg3_max = seg3; 754bd2cdd5eSJames Smart phba->ktime_seg4_total += seg4; 755bd2cdd5eSJames Smart if (seg4 < phba->ktime_seg4_min) 756bd2cdd5eSJames Smart phba->ktime_seg4_min = seg4; 757bd2cdd5eSJames Smart else if (seg4 > phba->ktime_seg4_max) 758bd2cdd5eSJames Smart phba->ktime_seg4_max = seg4; 759bd2cdd5eSJames Smart 760bd2cdd5eSJames Smart lpfc_ncmd->ts_last_cmd = 0; 761bd2cdd5eSJames Smart lpfc_ncmd->ts_cmd_start = 0; 762bd2cdd5eSJames Smart lpfc_ncmd->ts_cmd_wqput = 0; 763bd2cdd5eSJames Smart lpfc_ncmd->ts_isr_cmpl = 0; 764bd2cdd5eSJames Smart lpfc_ncmd->ts_data_nvme = 0; 765bd2cdd5eSJames Smart } 766bd2cdd5eSJames Smart #endif 767bd2cdd5eSJames Smart 76801649561SJames Smart /** 76901649561SJames Smart * lpfc_nvme_io_cmd_wqe_cmpl - Complete an NVME-over-FCP IO 77001649561SJames Smart * @lpfc_pnvme: Pointer to the driver's nvme instance data 77101649561SJames Smart * @lpfc_nvme_lport: Pointer to the driver's local port data 77201649561SJames Smart * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 77301649561SJames Smart * 77401649561SJames Smart * Driver registers this routine as it io request handler. This 77501649561SJames Smart * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 77601649561SJames Smart * data structure to the rport indicated in @lpfc_nvme_rport. 77701649561SJames Smart * 77801649561SJames Smart * Return value : 77901649561SJames Smart * 0 - Success 78001649561SJames Smart * TODO: What are the failure codes. 78101649561SJames Smart **/ 78201649561SJames Smart static void 78301649561SJames Smart lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 78401649561SJames Smart struct lpfc_wcqe_complete *wcqe) 78501649561SJames Smart { 78601649561SJames Smart struct lpfc_nvme_buf *lpfc_ncmd = 78701649561SJames Smart (struct lpfc_nvme_buf *)pwqeIn->context1; 78801649561SJames Smart struct lpfc_vport *vport = pwqeIn->vport; 78901649561SJames Smart struct nvmefc_fcp_req *nCmd; 79001649561SJames Smart struct nvme_fc_ersp_iu *ep; 79101649561SJames Smart struct nvme_fc_cmd_iu *cp; 79201649561SJames Smart struct lpfc_nvme_rport *rport; 79301649561SJames Smart struct lpfc_nodelist *ndlp; 794bbe3012bSJames Smart struct lpfc_nvme_fcpreq_priv *freqpriv; 79501649561SJames Smart unsigned long flags; 79601649561SJames Smart uint32_t code; 79701649561SJames Smart uint16_t cid, sqhd, data; 79801649561SJames Smart uint32_t *ptr; 79901649561SJames Smart 80001649561SJames Smart /* Sanity check on return of outstanding command */ 80101649561SJames Smart if (!lpfc_ncmd || !lpfc_ncmd->nvmeCmd || !lpfc_ncmd->nrport) { 80201649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 80301649561SJames Smart "6071 Completion pointers bad on wqe %p.\n", 80401649561SJames Smart wcqe); 80501649561SJames Smart return; 80601649561SJames Smart } 8072cee7808SJames Smart atomic_inc(&phba->fc4NvmeIoCmpls); 80801649561SJames Smart 80901649561SJames Smart nCmd = lpfc_ncmd->nvmeCmd; 81001649561SJames Smart rport = lpfc_ncmd->nrport; 81101649561SJames Smart 812bd2cdd5eSJames Smart lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n", 813bd2cdd5eSJames Smart lpfc_ncmd->cur_iocbq.sli4_xritag, 814bd2cdd5eSJames Smart bf_get(lpfc_wcqe_c_status, wcqe), wcqe->parameter); 81501649561SJames Smart /* 81601649561SJames Smart * Catch race where our node has transitioned, but the 81701649561SJames Smart * transport is still transitioning. 81801649561SJames Smart */ 81901649561SJames Smart ndlp = rport->ndlp; 82001649561SJames Smart if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 82101649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 822c154e750SJames Smart "6061 rport %p, DID x%06x node not ready.\n", 823c154e750SJames Smart rport, rport->remoteport->port_id); 82401649561SJames Smart 82501649561SJames Smart ndlp = lpfc_findnode_did(vport, rport->remoteport->port_id); 82601649561SJames Smart if (!ndlp) { 82701649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 82801649561SJames Smart "6062 Ignoring NVME cmpl. No ndlp\n"); 82901649561SJames Smart goto out_err; 83001649561SJames Smart } 83101649561SJames Smart } 83201649561SJames Smart 83301649561SJames Smart code = bf_get(lpfc_wcqe_c_code, wcqe); 83401649561SJames Smart if (code == CQE_CODE_NVME_ERSP) { 83501649561SJames Smart /* For this type of CQE, we need to rebuild the rsp */ 83601649561SJames Smart ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; 83701649561SJames Smart 83801649561SJames Smart /* 83901649561SJames Smart * Get Command Id from cmd to plug into response. This 84001649561SJames Smart * code is not needed in the next NVME Transport drop. 84101649561SJames Smart */ 84201649561SJames Smart cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; 84301649561SJames Smart cid = cp->sqe.common.command_id; 84401649561SJames Smart 84501649561SJames Smart /* 84601649561SJames Smart * RSN is in CQE word 2 84701649561SJames Smart * SQHD is in CQE Word 3 bits 15:0 84801649561SJames Smart * Cmd Specific info is in CQE Word 1 84901649561SJames Smart * and in CQE Word 0 bits 15:0 85001649561SJames Smart */ 85101649561SJames Smart sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe); 85201649561SJames Smart 85301649561SJames Smart /* Now lets build the NVME ERSP IU */ 85401649561SJames Smart ep->iu_len = cpu_to_be16(8); 85501649561SJames Smart ep->rsn = wcqe->parameter; 85601649561SJames Smart ep->xfrd_len = cpu_to_be32(nCmd->payload_length); 85701649561SJames Smart ep->rsvd12 = 0; 85801649561SJames Smart ptr = (uint32_t *)&ep->cqe.result.u64; 85901649561SJames Smart *ptr++ = wcqe->total_data_placed; 86001649561SJames Smart data = bf_get(lpfc_wcqe_c_ersp0, wcqe); 86101649561SJames Smart *ptr = (uint32_t)data; 86201649561SJames Smart ep->cqe.sq_head = sqhd; 86301649561SJames Smart ep->cqe.sq_id = nCmd->sqid; 86401649561SJames Smart ep->cqe.command_id = cid; 86501649561SJames Smart ep->cqe.status = 0; 86601649561SJames Smart 86701649561SJames Smart lpfc_ncmd->status = IOSTAT_SUCCESS; 86801649561SJames Smart lpfc_ncmd->result = 0; 86901649561SJames Smart nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN; 87001649561SJames Smart nCmd->transferred_length = nCmd->payload_length; 87101649561SJames Smart } else { 87201649561SJames Smart lpfc_ncmd->status = (bf_get(lpfc_wcqe_c_status, wcqe) & 87301649561SJames Smart LPFC_IOCB_STATUS_MASK); 874952c303bSDick Kennedy lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK); 87501649561SJames Smart 87601649561SJames Smart /* For NVME, the only failure path that results in an 87701649561SJames Smart * IO error is when the adapter rejects it. All other 87801649561SJames Smart * conditions are a success case and resolved by the 87901649561SJames Smart * transport. 88001649561SJames Smart * IOSTAT_FCP_RSP_ERROR means: 88101649561SJames Smart * 1. Length of data received doesn't match total 88201649561SJames Smart * transfer length in WQE 88301649561SJames Smart * 2. If the RSP payload does NOT match these cases: 88401649561SJames Smart * a. RSP length 12/24 bytes and all zeros 88501649561SJames Smart * b. NVME ERSP 88601649561SJames Smart */ 88701649561SJames Smart switch (lpfc_ncmd->status) { 88801649561SJames Smart case IOSTAT_SUCCESS: 88901649561SJames Smart nCmd->transferred_length = wcqe->total_data_placed; 89001649561SJames Smart nCmd->rcv_rsplen = 0; 89101649561SJames Smart nCmd->status = 0; 89201649561SJames Smart break; 89301649561SJames Smart case IOSTAT_FCP_RSP_ERROR: 89401649561SJames Smart nCmd->transferred_length = wcqe->total_data_placed; 89501649561SJames Smart nCmd->rcv_rsplen = wcqe->parameter; 89601649561SJames Smart nCmd->status = 0; 89701649561SJames Smart /* Sanity check */ 89801649561SJames Smart if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN) 89901649561SJames Smart break; 90001649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 90101649561SJames Smart "6081 NVME Completion Protocol Error: " 90286c67379SJames Smart "xri %x status x%x result x%x " 90386c67379SJames Smart "placed x%x\n", 90486c67379SJames Smart lpfc_ncmd->cur_iocbq.sli4_xritag, 90501649561SJames Smart lpfc_ncmd->status, lpfc_ncmd->result, 90601649561SJames Smart wcqe->total_data_placed); 90701649561SJames Smart break; 908952c303bSDick Kennedy case IOSTAT_LOCAL_REJECT: 909952c303bSDick Kennedy /* Let fall through to set command final state. */ 910952c303bSDick Kennedy if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED) 911952c303bSDick Kennedy lpfc_printf_vlog(vport, KERN_INFO, 912952c303bSDick Kennedy LOG_NVME_IOERR, 913952c303bSDick Kennedy "6032 Delay Aborted cmd %p " 914952c303bSDick Kennedy "nvme cmd %p, xri x%x, " 915952c303bSDick Kennedy "xb %d\n", 916952c303bSDick Kennedy lpfc_ncmd, nCmd, 917952c303bSDick Kennedy lpfc_ncmd->cur_iocbq.sli4_xritag, 918952c303bSDick Kennedy bf_get(lpfc_wcqe_c_xb, wcqe)); 91901649561SJames Smart default: 92001649561SJames Smart out_err: 921e3246a12SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 92286c67379SJames Smart "6072 NVME Completion Error: xri %x " 92301649561SJames Smart "status x%x result x%x placed x%x\n", 92486c67379SJames Smart lpfc_ncmd->cur_iocbq.sli4_xritag, 92501649561SJames Smart lpfc_ncmd->status, lpfc_ncmd->result, 92601649561SJames Smart wcqe->total_data_placed); 92701649561SJames Smart nCmd->transferred_length = 0; 92801649561SJames Smart nCmd->rcv_rsplen = 0; 9298e009ce8SJames Smart nCmd->status = NVME_SC_INTERNAL; 93001649561SJames Smart } 93101649561SJames Smart } 93201649561SJames Smart 93301649561SJames Smart /* pick up SLI4 exhange busy condition */ 93401649561SJames Smart if (bf_get(lpfc_wcqe_c_xb, wcqe)) 93501649561SJames Smart lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 93601649561SJames Smart else 93701649561SJames Smart lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 93801649561SJames Smart 93901649561SJames Smart if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 94001649561SJames Smart atomic_dec(&ndlp->cmd_pending); 94101649561SJames Smart 94201649561SJames Smart /* Update stats and complete the IO. There is 94301649561SJames Smart * no need for dma unprep because the nvme_transport 94401649561SJames Smart * owns the dma address. 94501649561SJames Smart */ 946bd2cdd5eSJames Smart #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 947c8a4ce0bSDick Kennedy if (lpfc_ncmd->ts_cmd_start) { 948bd2cdd5eSJames Smart lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp; 949bd2cdd5eSJames Smart lpfc_ncmd->ts_data_nvme = ktime_get_ns(); 950bd2cdd5eSJames Smart phba->ktime_last_cmd = lpfc_ncmd->ts_data_nvme; 951bd2cdd5eSJames Smart lpfc_nvme_ktime(phba, lpfc_ncmd); 952bd2cdd5eSJames Smart } 953bd2cdd5eSJames Smart if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) { 954bd2cdd5eSJames Smart if (lpfc_ncmd->cpu != smp_processor_id()) 955bd2cdd5eSJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 956bd2cdd5eSJames Smart "6701 CPU Check cmpl: " 957bd2cdd5eSJames Smart "cpu %d expect %d\n", 958bd2cdd5eSJames Smart smp_processor_id(), lpfc_ncmd->cpu); 959bd2cdd5eSJames Smart if (lpfc_ncmd->cpu < LPFC_CHECK_CPU_CNT) 960bd2cdd5eSJames Smart phba->cpucheck_cmpl_io[lpfc_ncmd->cpu]++; 961bd2cdd5eSJames Smart } 962bd2cdd5eSJames Smart #endif 963bbe3012bSJames Smart freqpriv = nCmd->private; 964bbe3012bSJames Smart freqpriv->nvme_buf = NULL; 965952c303bSDick Kennedy 966952c303bSDick Kennedy /* NVME targets need completion held off until the abort exchange 967add9d6beSJames Smart * completes unless the NVME Rport is getting unregistered. 968952c303bSDick Kennedy */ 969add9d6beSJames Smart if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY) || 970add9d6beSJames Smart ndlp->upcall_flags & NLP_WAIT_FOR_UNREG) { 971add9d6beSJames Smart /* Clear the XBUSY flag to prevent double completions. 972add9d6beSJames Smart * The nvme rport is getting unregistered and there is 973add9d6beSJames Smart * no need to defer the IO. 974add9d6beSJames Smart */ 975add9d6beSJames Smart if (lpfc_ncmd->flags & LPFC_SBUF_XBUSY) 976add9d6beSJames Smart lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 977add9d6beSJames Smart 97801649561SJames Smart nCmd->done(nCmd); 979add9d6beSJames Smart } 98001649561SJames Smart 98101649561SJames Smart spin_lock_irqsave(&phba->hbalock, flags); 98201649561SJames Smart lpfc_ncmd->nrport = NULL; 98301649561SJames Smart spin_unlock_irqrestore(&phba->hbalock, flags); 98401649561SJames Smart 985952c303bSDick Kennedy /* Call release with XB=1 to queue the IO into the abort list. */ 98601649561SJames Smart lpfc_release_nvme_buf(phba, lpfc_ncmd); 98701649561SJames Smart } 98801649561SJames Smart 98901649561SJames Smart 99001649561SJames Smart /** 99101649561SJames Smart * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO 99201649561SJames Smart * @lpfc_pnvme: Pointer to the driver's nvme instance data 99301649561SJames Smart * @lpfc_nvme_lport: Pointer to the driver's local port data 99401649561SJames Smart * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 99501649561SJames Smart * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 99601649561SJames Smart * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 99701649561SJames Smart * 99801649561SJames Smart * Driver registers this routine as it io request handler. This 99901649561SJames Smart * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 100001649561SJames Smart * data structure to the rport indicated in @lpfc_nvme_rport. 100101649561SJames Smart * 100201649561SJames Smart * Return value : 100301649561SJames Smart * 0 - Success 100401649561SJames Smart * TODO: What are the failure codes. 100501649561SJames Smart **/ 100601649561SJames Smart static int 100701649561SJames Smart lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, 100801649561SJames Smart struct lpfc_nvme_buf *lpfc_ncmd, 100901649561SJames Smart struct lpfc_nodelist *pnode) 101001649561SJames Smart { 101101649561SJames Smart struct lpfc_hba *phba = vport->phba; 101201649561SJames Smart struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 101301649561SJames Smart struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq); 101401649561SJames Smart union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&pwqeq->wqe; 101501649561SJames Smart uint32_t req_len; 101601649561SJames Smart 101701649561SJames Smart if (!pnode || !NLP_CHK_NODE_ACT(pnode)) 101801649561SJames Smart return -EINVAL; 101901649561SJames Smart 102001649561SJames Smart /* 102101649561SJames Smart * There are three possibilities here - use scatter-gather segment, use 102201649561SJames Smart * the single mapping, or neither. 102301649561SJames Smart */ 102401649561SJames Smart wqe->fcp_iwrite.initial_xfer_len = 0; 102501649561SJames Smart if (nCmd->sg_cnt) { 102601649561SJames Smart if (nCmd->io_dir == NVMEFC_FCP_WRITE) { 102701649561SJames Smart /* Word 5 */ 102801649561SJames Smart if ((phba->cfg_nvme_enable_fb) && 102901649561SJames Smart (pnode->nlp_flag & NLP_FIRSTBURST)) { 103001649561SJames Smart req_len = lpfc_ncmd->nvmeCmd->payload_length; 103101649561SJames Smart if (req_len < pnode->nvme_fb_size) 103201649561SJames Smart wqe->fcp_iwrite.initial_xfer_len = 103301649561SJames Smart req_len; 103401649561SJames Smart else 103501649561SJames Smart wqe->fcp_iwrite.initial_xfer_len = 103601649561SJames Smart pnode->nvme_fb_size; 103701649561SJames Smart } 103801649561SJames Smart 103901649561SJames Smart /* Word 7 */ 104001649561SJames Smart bf_set(wqe_cmnd, &wqe->generic.wqe_com, 104101649561SJames Smart CMD_FCP_IWRITE64_WQE); 104201649561SJames Smart bf_set(wqe_pu, &wqe->generic.wqe_com, 104301649561SJames Smart PARM_READ_CHECK); 104401649561SJames Smart 104501649561SJames Smart /* Word 10 */ 104601649561SJames Smart bf_set(wqe_qosd, &wqe->fcp_iwrite.wqe_com, 0); 104701649561SJames Smart bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, 104801649561SJames Smart LPFC_WQE_IOD_WRITE); 104901649561SJames Smart bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com, 105001649561SJames Smart LPFC_WQE_LENLOC_WORD4); 105101649561SJames Smart if (phba->cfg_nvme_oas) 105201649561SJames Smart bf_set(wqe_oas, &wqe->fcp_iwrite.wqe_com, 1); 105301649561SJames Smart 105401649561SJames Smart /* Word 11 */ 105501649561SJames Smart bf_set(wqe_cmd_type, &wqe->generic.wqe_com, 105601649561SJames Smart NVME_WRITE_CMD); 105701649561SJames Smart 10582cee7808SJames Smart atomic_inc(&phba->fc4NvmeOutputRequests); 105901649561SJames Smart } else { 106001649561SJames Smart /* Word 7 */ 106101649561SJames Smart bf_set(wqe_cmnd, &wqe->generic.wqe_com, 106201649561SJames Smart CMD_FCP_IREAD64_WQE); 106301649561SJames Smart bf_set(wqe_pu, &wqe->generic.wqe_com, 106401649561SJames Smart PARM_READ_CHECK); 106501649561SJames Smart 106601649561SJames Smart /* Word 10 */ 106701649561SJames Smart bf_set(wqe_qosd, &wqe->fcp_iread.wqe_com, 0); 106801649561SJames Smart bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, 106901649561SJames Smart LPFC_WQE_IOD_READ); 107001649561SJames Smart bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com, 107101649561SJames Smart LPFC_WQE_LENLOC_WORD4); 107201649561SJames Smart if (phba->cfg_nvme_oas) 107301649561SJames Smart bf_set(wqe_oas, &wqe->fcp_iread.wqe_com, 1); 107401649561SJames Smart 107501649561SJames Smart /* Word 11 */ 107601649561SJames Smart bf_set(wqe_cmd_type, &wqe->generic.wqe_com, 107701649561SJames Smart NVME_READ_CMD); 107801649561SJames Smart 10792cee7808SJames Smart atomic_inc(&phba->fc4NvmeInputRequests); 108001649561SJames Smart } 108101649561SJames Smart } else { 108201649561SJames Smart /* Word 4 */ 108301649561SJames Smart wqe->fcp_icmd.rsrvd4 = 0; 108401649561SJames Smart 108501649561SJames Smart /* Word 7 */ 108601649561SJames Smart bf_set(wqe_cmnd, &wqe->generic.wqe_com, CMD_FCP_ICMND64_WQE); 108701649561SJames Smart bf_set(wqe_pu, &wqe->generic.wqe_com, 0); 108801649561SJames Smart 108901649561SJames Smart /* Word 10 */ 109001649561SJames Smart bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1); 109101649561SJames Smart bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_WRITE); 109201649561SJames Smart bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com, 109301649561SJames Smart LPFC_WQE_LENLOC_NONE); 109401649561SJames Smart if (phba->cfg_nvme_oas) 109501649561SJames Smart bf_set(wqe_oas, &wqe->fcp_icmd.wqe_com, 1); 109601649561SJames Smart 109701649561SJames Smart /* Word 11 */ 109801649561SJames Smart bf_set(wqe_cmd_type, &wqe->generic.wqe_com, NVME_READ_CMD); 109901649561SJames Smart 11002cee7808SJames Smart atomic_inc(&phba->fc4NvmeControlRequests); 110101649561SJames Smart } 110201649561SJames Smart /* 110301649561SJames Smart * Finish initializing those WQE fields that are independent 110401649561SJames Smart * of the nvme_cmnd request_buffer 110501649561SJames Smart */ 110601649561SJames Smart 110701649561SJames Smart /* Word 6 */ 110801649561SJames Smart bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, 110901649561SJames Smart phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); 111001649561SJames Smart bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 111101649561SJames Smart 111201649561SJames Smart /* Word 7 */ 111301649561SJames Smart /* Preserve Class data in the ndlp. */ 111401649561SJames Smart bf_set(wqe_class, &wqe->generic.wqe_com, 111501649561SJames Smart (pnode->nlp_fcp_info & 0x0f)); 111601649561SJames Smart 111701649561SJames Smart /* Word 8 */ 111801649561SJames Smart wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 111901649561SJames Smart 112001649561SJames Smart /* Word 9 */ 112101649561SJames Smart bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 112201649561SJames Smart 112301649561SJames Smart /* Word 11 */ 112401649561SJames Smart bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 112501649561SJames Smart 112601649561SJames Smart pwqeq->vport = vport; 112701649561SJames Smart return 0; 112801649561SJames Smart } 112901649561SJames Smart 113001649561SJames Smart 113101649561SJames Smart /** 113201649561SJames Smart * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO 113301649561SJames Smart * @lpfc_pnvme: Pointer to the driver's nvme instance data 113401649561SJames Smart * @lpfc_nvme_lport: Pointer to the driver's local port data 113501649561SJames Smart * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 113601649561SJames Smart * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 113701649561SJames Smart * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 113801649561SJames Smart * 113901649561SJames Smart * Driver registers this routine as it io request handler. This 114001649561SJames Smart * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 114101649561SJames Smart * data structure to the rport indicated in @lpfc_nvme_rport. 114201649561SJames Smart * 114301649561SJames Smart * Return value : 114401649561SJames Smart * 0 - Success 114501649561SJames Smart * TODO: What are the failure codes. 114601649561SJames Smart **/ 114701649561SJames Smart static int 114801649561SJames Smart lpfc_nvme_prep_io_dma(struct lpfc_vport *vport, 114901649561SJames Smart struct lpfc_nvme_buf *lpfc_ncmd) 115001649561SJames Smart { 115101649561SJames Smart struct lpfc_hba *phba = vport->phba; 115201649561SJames Smart struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 115301649561SJames Smart union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe; 115401649561SJames Smart struct sli4_sge *sgl = lpfc_ncmd->nvme_sgl; 115501649561SJames Smart struct scatterlist *data_sg; 115601649561SJames Smart struct sli4_sge *first_data_sgl; 115701649561SJames Smart dma_addr_t physaddr; 115801649561SJames Smart uint32_t num_bde = 0; 115901649561SJames Smart uint32_t dma_len; 116001649561SJames Smart uint32_t dma_offset = 0; 116101649561SJames Smart int nseg, i; 116201649561SJames Smart 116301649561SJames Smart /* Fix up the command and response DMA stuff. */ 116401649561SJames Smart lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd); 116501649561SJames Smart 116601649561SJames Smart /* 116701649561SJames Smart * There are three possibilities here - use scatter-gather segment, use 116801649561SJames Smart * the single mapping, or neither. 116901649561SJames Smart */ 117001649561SJames Smart if (nCmd->sg_cnt) { 117101649561SJames Smart /* 117201649561SJames Smart * Jump over the cmd and rsp SGEs. The fix routine 117301649561SJames Smart * has already adjusted for this. 117401649561SJames Smart */ 117501649561SJames Smart sgl += 2; 117601649561SJames Smart 117701649561SJames Smart first_data_sgl = sgl; 117801649561SJames Smart lpfc_ncmd->seg_cnt = nCmd->sg_cnt; 117981e6a637SJames Smart if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) { 118001649561SJames Smart lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 118101649561SJames Smart "6058 Too many sg segments from " 118201649561SJames Smart "NVME Transport. Max %d, " 118301649561SJames Smart "nvmeIO sg_cnt %d\n", 118429bfd55aSJames Smart phba->cfg_nvme_seg_cnt + 1, 118501649561SJames Smart lpfc_ncmd->seg_cnt); 118601649561SJames Smart lpfc_ncmd->seg_cnt = 0; 118701649561SJames Smart return 1; 118801649561SJames Smart } 118901649561SJames Smart 119001649561SJames Smart /* 119101649561SJames Smart * The driver established a maximum scatter-gather segment count 119201649561SJames Smart * during probe that limits the number of sg elements in any 119301649561SJames Smart * single nvme command. Just run through the seg_cnt and format 119401649561SJames Smart * the sge's. 119501649561SJames Smart */ 119601649561SJames Smart nseg = nCmd->sg_cnt; 119701649561SJames Smart data_sg = nCmd->first_sgl; 119801649561SJames Smart for (i = 0; i < nseg; i++) { 119901649561SJames Smart if (data_sg == NULL) { 120001649561SJames Smart lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 120101649561SJames Smart "6059 dptr err %d, nseg %d\n", 120201649561SJames Smart i, nseg); 120301649561SJames Smart lpfc_ncmd->seg_cnt = 0; 120401649561SJames Smart return 1; 120501649561SJames Smart } 120601649561SJames Smart physaddr = data_sg->dma_address; 120701649561SJames Smart dma_len = data_sg->length; 120801649561SJames Smart sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); 120901649561SJames Smart sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); 121001649561SJames Smart sgl->word2 = le32_to_cpu(sgl->word2); 121101649561SJames Smart if ((num_bde + 1) == nseg) 121201649561SJames Smart bf_set(lpfc_sli4_sge_last, sgl, 1); 121301649561SJames Smart else 121401649561SJames Smart bf_set(lpfc_sli4_sge_last, sgl, 0); 121501649561SJames Smart bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 121601649561SJames Smart bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 121701649561SJames Smart sgl->word2 = cpu_to_le32(sgl->word2); 121801649561SJames Smart sgl->sge_len = cpu_to_le32(dma_len); 121901649561SJames Smart 122001649561SJames Smart dma_offset += dma_len; 122101649561SJames Smart data_sg = sg_next(data_sg); 122201649561SJames Smart sgl++; 122301649561SJames Smart } 122401649561SJames Smart } else { 122501649561SJames Smart /* For this clause to be valid, the payload_length 122601649561SJames Smart * and sg_cnt must zero. 122701649561SJames Smart */ 122801649561SJames Smart if (nCmd->payload_length != 0) { 122901649561SJames Smart lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 123001649561SJames Smart "6063 NVME DMA Prep Err: sg_cnt %d " 123101649561SJames Smart "payload_length x%x\n", 123201649561SJames Smart nCmd->sg_cnt, nCmd->payload_length); 123301649561SJames Smart return 1; 123401649561SJames Smart } 123501649561SJames Smart } 123601649561SJames Smart 123701649561SJames Smart /* 123801649561SJames Smart * Due to difference in data length between DIF/non-DIF paths, 123901649561SJames Smart * we need to set word 4 of WQE here 124001649561SJames Smart */ 124101649561SJames Smart wqe->fcp_iread.total_xfer_len = nCmd->payload_length; 124201649561SJames Smart return 0; 124301649561SJames Smart } 124401649561SJames Smart 124501649561SJames Smart /** 124601649561SJames Smart * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO 124701649561SJames Smart * @lpfc_pnvme: Pointer to the driver's nvme instance data 124801649561SJames Smart * @lpfc_nvme_lport: Pointer to the driver's local port data 124901649561SJames Smart * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 125001649561SJames Smart * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 125101649561SJames Smart * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 125201649561SJames Smart * 125301649561SJames Smart * Driver registers this routine as it io request handler. This 125401649561SJames Smart * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 125501649561SJames Smart * data structure to the rport 125601649561SJames Smart indicated in @lpfc_nvme_rport. 125701649561SJames Smart * 125801649561SJames Smart * Return value : 125901649561SJames Smart * 0 - Success 126001649561SJames Smart * TODO: What are the failure codes. 126101649561SJames Smart **/ 126201649561SJames Smart static int 126301649561SJames Smart lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, 126401649561SJames Smart struct nvme_fc_remote_port *pnvme_rport, 126501649561SJames Smart void *hw_queue_handle, 126601649561SJames Smart struct nvmefc_fcp_req *pnvme_fcreq) 126701649561SJames Smart { 126801649561SJames Smart int ret = 0; 1269*cf1a1d3eSJames Smart int expedite = 0; 127001649561SJames Smart struct lpfc_nvme_lport *lport; 127101649561SJames Smart struct lpfc_vport *vport; 127201649561SJames Smart struct lpfc_hba *phba; 127301649561SJames Smart struct lpfc_nodelist *ndlp; 127401649561SJames Smart struct lpfc_nvme_buf *lpfc_ncmd; 127501649561SJames Smart struct lpfc_nvme_rport *rport; 127601649561SJames Smart struct lpfc_nvme_qhandle *lpfc_queue_info; 1277c3725bdcSJames Smart struct lpfc_nvme_fcpreq_priv *freqpriv; 1278*cf1a1d3eSJames Smart struct nvme_common_command *sqe; 1279bd2cdd5eSJames Smart #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1280bd2cdd5eSJames Smart uint64_t start = 0; 1281bd2cdd5eSJames Smart #endif 128201649561SJames Smart 1283c3725bdcSJames Smart /* Validate pointers. LLDD fault handling with transport does 1284c3725bdcSJames Smart * have timing races. 1285c3725bdcSJames Smart */ 128601649561SJames Smart lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1287c3725bdcSJames Smart if (unlikely(!lport)) { 1288c3725bdcSJames Smart ret = -EINVAL; 1289c3725bdcSJames Smart goto out_fail; 1290c3725bdcSJames Smart } 1291c3725bdcSJames Smart 129201649561SJames Smart vport = lport->vport; 1293c3725bdcSJames Smart 1294c3725bdcSJames Smart if (unlikely(!hw_queue_handle)) { 1295c3725bdcSJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1296c3725bdcSJames Smart "6129 Fail Abort, NULL hw_queue_handle\n"); 1297c3725bdcSJames Smart ret = -EINVAL; 1298c3725bdcSJames Smart goto out_fail; 1299c3725bdcSJames Smart } 1300c3725bdcSJames Smart 130101649561SJames Smart phba = vport->phba; 130201649561SJames Smart 13031abcb371SDick Kennedy if (vport->load_flag & FC_UNLOADING) { 13041abcb371SDick Kennedy ret = -ENODEV; 13051abcb371SDick Kennedy goto out_fail; 13061abcb371SDick Kennedy } 13071abcb371SDick Kennedy 13083386f4bdSJames Smart if (vport->load_flag & FC_UNLOADING) { 13093386f4bdSJames Smart ret = -ENODEV; 13103386f4bdSJames Smart goto out_fail; 13113386f4bdSJames Smart } 13123386f4bdSJames Smart 1313c3725bdcSJames Smart freqpriv = pnvme_fcreq->private; 1314c3725bdcSJames Smart if (unlikely(!freqpriv)) { 1315c3725bdcSJames Smart ret = -EINVAL; 1316b7672ae6SDick Kennedy goto out_fail; 1317b7672ae6SDick Kennedy } 1318b7672ae6SDick Kennedy 1319bd2cdd5eSJames Smart #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1320bd2cdd5eSJames Smart if (phba->ktime_on) 1321bd2cdd5eSJames Smart start = ktime_get_ns(); 1322bd2cdd5eSJames Smart #endif 132301649561SJames Smart rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 132401649561SJames Smart lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle; 132501649561SJames Smart 132601649561SJames Smart /* 132701649561SJames Smart * Catch race where our node has transitioned, but the 132801649561SJames Smart * transport is still transitioning. 132901649561SJames Smart */ 133001649561SJames Smart ndlp = rport->ndlp; 133101649561SJames Smart if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 133201649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 133301649561SJames Smart "6053 rport %p, ndlp %p, DID x%06x " 133401649561SJames Smart "ndlp not ready.\n", 133501649561SJames Smart rport, ndlp, pnvme_rport->port_id); 133601649561SJames Smart 133701649561SJames Smart ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); 133801649561SJames Smart if (!ndlp) { 133901649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 134001649561SJames Smart "6066 Missing node for DID %x\n", 134101649561SJames Smart pnvme_rport->port_id); 134201649561SJames Smart ret = -ENODEV; 134301649561SJames Smart goto out_fail; 134401649561SJames Smart } 134501649561SJames Smart } 134601649561SJames Smart 134701649561SJames Smart /* The remote node has to be a mapped target or it's an error. */ 134801649561SJames Smart if ((ndlp->nlp_type & NLP_NVME_TARGET) && 134901649561SJames Smart (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 135001649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 135101649561SJames Smart "6036 rport %p, DID x%06x not ready for " 135201649561SJames Smart "IO. State x%x, Type x%x\n", 135301649561SJames Smart rport, pnvme_rport->port_id, 135401649561SJames Smart ndlp->nlp_state, ndlp->nlp_type); 135501649561SJames Smart ret = -ENODEV; 135601649561SJames Smart goto out_fail; 135701649561SJames Smart 135801649561SJames Smart } 135901649561SJames Smart 1360*cf1a1d3eSJames Smart /* Currently only NVME Keep alive commands should be expedited 1361*cf1a1d3eSJames Smart * if the driver runs out of a resource. These should only be 1362*cf1a1d3eSJames Smart * issued on the admin queue, qidx 0 1363*cf1a1d3eSJames Smart */ 1364*cf1a1d3eSJames Smart if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) { 1365*cf1a1d3eSJames Smart sqe = &((struct nvme_fc_cmd_iu *) 1366*cf1a1d3eSJames Smart pnvme_fcreq->cmdaddr)->sqe.common; 1367*cf1a1d3eSJames Smart if (sqe->opcode == nvme_admin_keep_alive) 1368*cf1a1d3eSJames Smart expedite = 1; 1369*cf1a1d3eSJames Smart } 1370*cf1a1d3eSJames Smart 137101649561SJames Smart /* The node is shared with FCP IO, make sure the IO pending count does 137201649561SJames Smart * not exceed the programmed depth. 137301649561SJames Smart */ 1374*cf1a1d3eSJames Smart if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) && 1375*cf1a1d3eSJames Smart !expedite) { 1376cd22d605SDick Kennedy ret = -EBUSY; 137701649561SJames Smart goto out_fail; 137801649561SJames Smart } 137901649561SJames Smart 1380*cf1a1d3eSJames Smart lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, expedite); 138101649561SJames Smart if (lpfc_ncmd == NULL) { 138201649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 138301649561SJames Smart "6065 driver's buffer pool is empty, " 138401649561SJames Smart "IO failed\n"); 1385cd22d605SDick Kennedy ret = -EBUSY; 138601649561SJames Smart goto out_fail; 138701649561SJames Smart } 1388bd2cdd5eSJames Smart #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1389c8a4ce0bSDick Kennedy if (start) { 1390bd2cdd5eSJames Smart lpfc_ncmd->ts_cmd_start = start; 1391bd2cdd5eSJames Smart lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd; 1392c8a4ce0bSDick Kennedy } else { 1393c8a4ce0bSDick Kennedy lpfc_ncmd->ts_cmd_start = 0; 1394bd2cdd5eSJames Smart } 1395bd2cdd5eSJames Smart #endif 139601649561SJames Smart 139701649561SJames Smart /* 139801649561SJames Smart * Store the data needed by the driver to issue, abort, and complete 139901649561SJames Smart * an IO. 140001649561SJames Smart * Do not let the IO hang out forever. There is no midlayer issuing 140101649561SJames Smart * an abort so inform the FW of the maximum IO pending time. 140201649561SJames Smart */ 1403bbe3012bSJames Smart freqpriv->nvme_buf = lpfc_ncmd; 140401649561SJames Smart lpfc_ncmd->nvmeCmd = pnvme_fcreq; 140501649561SJames Smart lpfc_ncmd->nrport = rport; 1406318083adSJames Smart lpfc_ncmd->ndlp = ndlp; 140701649561SJames Smart lpfc_ncmd->start_time = jiffies; 140801649561SJames Smart 140901649561SJames Smart lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp); 141001649561SJames Smart ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd); 141101649561SJames Smart if (ret) { 141201649561SJames Smart ret = -ENOMEM; 141301649561SJames Smart goto out_free_nvme_buf; 141401649561SJames Smart } 141501649561SJames Smart 141601649561SJames Smart atomic_inc(&ndlp->cmd_pending); 141701649561SJames Smart 141801649561SJames Smart /* 141901649561SJames Smart * Issue the IO on the WQ indicated by index in the hw_queue_handle. 142001649561SJames Smart * This identfier was create in our hardware queue create callback 142101649561SJames Smart * routine. The driver now is dependent on the IO queue steering from 142201649561SJames Smart * the transport. We are trusting the upper NVME layers know which 142301649561SJames Smart * index to use and that they have affinitized a CPU to this hardware 142401649561SJames Smart * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ. 142501649561SJames Smart */ 142601649561SJames Smart lpfc_ncmd->cur_iocbq.hba_wqidx = lpfc_queue_info->index; 142701649561SJames Smart 1428bd2cdd5eSJames Smart lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n", 1429bd2cdd5eSJames Smart lpfc_ncmd->cur_iocbq.sli4_xritag, 1430bd2cdd5eSJames Smart lpfc_queue_info->index, ndlp->nlp_DID); 1431bd2cdd5eSJames Smart 143201649561SJames Smart ret = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, &lpfc_ncmd->cur_iocbq); 143301649561SJames Smart if (ret) { 143401649561SJames Smart atomic_dec(&ndlp->cmd_pending); 1435e3246a12SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 143601649561SJames Smart "6113 FCP could not issue WQE err %x " 143701649561SJames Smart "sid: x%x did: x%x oxid: x%x\n", 143801649561SJames Smart ret, vport->fc_myDID, ndlp->nlp_DID, 143901649561SJames Smart lpfc_ncmd->cur_iocbq.sli4_xritag); 144001649561SJames Smart goto out_free_nvme_buf; 144101649561SJames Smart } 144201649561SJames Smart 1443bd2cdd5eSJames Smart #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1444c8a4ce0bSDick Kennedy if (lpfc_ncmd->ts_cmd_start) 1445bd2cdd5eSJames Smart lpfc_ncmd->ts_cmd_wqput = ktime_get_ns(); 1446bd2cdd5eSJames Smart 1447bd2cdd5eSJames Smart if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) { 1448bd2cdd5eSJames Smart lpfc_ncmd->cpu = smp_processor_id(); 1449bd2cdd5eSJames Smart if (lpfc_ncmd->cpu != lpfc_queue_info->index) { 1450bd2cdd5eSJames Smart /* Check for admin queue */ 1451bd2cdd5eSJames Smart if (lpfc_queue_info->qidx) { 1452bd2cdd5eSJames Smart lpfc_printf_vlog(vport, 1453bd2cdd5eSJames Smart KERN_ERR, LOG_NVME_IOERR, 1454bd2cdd5eSJames Smart "6702 CPU Check cmd: " 1455bd2cdd5eSJames Smart "cpu %d wq %d\n", 1456bd2cdd5eSJames Smart lpfc_ncmd->cpu, 1457bd2cdd5eSJames Smart lpfc_queue_info->index); 1458bd2cdd5eSJames Smart } 1459bd2cdd5eSJames Smart lpfc_ncmd->cpu = lpfc_queue_info->index; 1460bd2cdd5eSJames Smart } 1461bd2cdd5eSJames Smart if (lpfc_ncmd->cpu < LPFC_CHECK_CPU_CNT) 1462bd2cdd5eSJames Smart phba->cpucheck_xmt_io[lpfc_ncmd->cpu]++; 1463bd2cdd5eSJames Smart } 1464bd2cdd5eSJames Smart #endif 146501649561SJames Smart return 0; 146601649561SJames Smart 146701649561SJames Smart out_free_nvme_buf: 14682cee7808SJames Smart if (lpfc_ncmd->nvmeCmd->sg_cnt) { 14692cee7808SJames Smart if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE) 14702cee7808SJames Smart atomic_dec(&phba->fc4NvmeOutputRequests); 14712cee7808SJames Smart else 14722cee7808SJames Smart atomic_dec(&phba->fc4NvmeInputRequests); 14732cee7808SJames Smart } else 14742cee7808SJames Smart atomic_dec(&phba->fc4NvmeControlRequests); 147501649561SJames Smart lpfc_release_nvme_buf(phba, lpfc_ncmd); 147601649561SJames Smart out_fail: 147701649561SJames Smart return ret; 147801649561SJames Smart } 147901649561SJames Smart 148001649561SJames Smart /** 148101649561SJames Smart * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request. 148201649561SJames Smart * @phba: Pointer to HBA context object 148301649561SJames Smart * @cmdiocb: Pointer to command iocb object. 148401649561SJames Smart * @rspiocb: Pointer to response iocb object. 148501649561SJames Smart * 148601649561SJames Smart * This is the callback function for any NVME FCP IO that was aborted. 148701649561SJames Smart * 148801649561SJames Smart * Return value: 148901649561SJames Smart * None 149001649561SJames Smart **/ 149101649561SJames Smart void 149201649561SJames Smart lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 149301649561SJames Smart struct lpfc_wcqe_complete *abts_cmpl) 149401649561SJames Smart { 1495e3246a12SJames Smart lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 149601649561SJames Smart "6145 ABORT_XRI_CN completing on rpi x%x " 149701649561SJames Smart "original iotag x%x, abort cmd iotag x%x " 149801649561SJames Smart "req_tag x%x, status x%x, hwstatus x%x\n", 149901649561SJames Smart cmdiocb->iocb.un.acxri.abortContextTag, 150001649561SJames Smart cmdiocb->iocb.un.acxri.abortIoTag, 150101649561SJames Smart cmdiocb->iotag, 150201649561SJames Smart bf_get(lpfc_wcqe_c_request_tag, abts_cmpl), 150301649561SJames Smart bf_get(lpfc_wcqe_c_status, abts_cmpl), 150401649561SJames Smart bf_get(lpfc_wcqe_c_hw_status, abts_cmpl)); 150501649561SJames Smart lpfc_sli_release_iocbq(phba, cmdiocb); 150601649561SJames Smart } 150701649561SJames Smart 150801649561SJames Smart /** 150901649561SJames Smart * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS 151001649561SJames Smart * @lpfc_pnvme: Pointer to the driver's nvme instance data 151101649561SJames Smart * @lpfc_nvme_lport: Pointer to the driver's local port data 151201649561SJames Smart * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 151301649561SJames Smart * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 151401649561SJames Smart * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 151501649561SJames Smart * 151601649561SJames Smart * Driver registers this routine as its nvme request io abort handler. This 151701649561SJames Smart * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq 151801649561SJames Smart * data structure to the rport indicated in @lpfc_nvme_rport. This routine 151901649561SJames Smart * is executed asynchronously - one the target is validated as "MAPPED" and 152001649561SJames Smart * ready for IO, the driver issues the abort request and returns. 152101649561SJames Smart * 152201649561SJames Smart * Return value: 152301649561SJames Smart * None 152401649561SJames Smart **/ 152501649561SJames Smart static void 152601649561SJames Smart lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, 152701649561SJames Smart struct nvme_fc_remote_port *pnvme_rport, 152801649561SJames Smart void *hw_queue_handle, 152901649561SJames Smart struct nvmefc_fcp_req *pnvme_fcreq) 153001649561SJames Smart { 153101649561SJames Smart struct lpfc_nvme_lport *lport; 153201649561SJames Smart struct lpfc_vport *vport; 153301649561SJames Smart struct lpfc_hba *phba; 153401649561SJames Smart struct lpfc_nvme_buf *lpfc_nbuf; 153501649561SJames Smart struct lpfc_iocbq *abts_buf; 153601649561SJames Smart struct lpfc_iocbq *nvmereq_wqe; 1537c3725bdcSJames Smart struct lpfc_nvme_fcpreq_priv *freqpriv; 153801649561SJames Smart union lpfc_wqe *abts_wqe; 153901649561SJames Smart unsigned long flags; 154001649561SJames Smart int ret_val; 154101649561SJames Smart 1542c3725bdcSJames Smart /* Validate pointers. LLDD fault handling with transport does 1543c3725bdcSJames Smart * have timing races. 1544c3725bdcSJames Smart */ 154501649561SJames Smart lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1546c3725bdcSJames Smart if (unlikely(!lport)) 1547c3725bdcSJames Smart return; 154801649561SJames Smart 1549c3725bdcSJames Smart vport = lport->vport; 1550c3725bdcSJames Smart 1551c3725bdcSJames Smart if (unlikely(!hw_queue_handle)) { 1552c3725bdcSJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1553c3725bdcSJames Smart "6129 Fail Abort, HW Queue Handle NULL.\n"); 1554c3725bdcSJames Smart return; 1555c3725bdcSJames Smart } 1556c3725bdcSJames Smart 1557c3725bdcSJames Smart phba = vport->phba; 1558c3725bdcSJames Smart freqpriv = pnvme_fcreq->private; 1559c3725bdcSJames Smart 1560c3725bdcSJames Smart if (unlikely(!freqpriv)) 1561c3725bdcSJames Smart return; 15623386f4bdSJames Smart if (vport->load_flag & FC_UNLOADING) 15633386f4bdSJames Smart return; 15643386f4bdSJames Smart 156501649561SJames Smart /* Announce entry to new IO submit field. */ 156686c67379SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 156701649561SJames Smart "6002 Abort Request to rport DID x%06x " 156801649561SJames Smart "for nvme_fc_req %p\n", 156901649561SJames Smart pnvme_rport->port_id, 157001649561SJames Smart pnvme_fcreq); 157101649561SJames Smart 157201649561SJames Smart /* If the hba is getting reset, this flag is set. It is 157301649561SJames Smart * cleared when the reset is complete and rings reestablished. 157401649561SJames Smart */ 157501649561SJames Smart spin_lock_irqsave(&phba->hbalock, flags); 157601649561SJames Smart /* driver queued commands are in process of being flushed */ 157701649561SJames Smart if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) { 157801649561SJames Smart spin_unlock_irqrestore(&phba->hbalock, flags); 157986c67379SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 158001649561SJames Smart "6139 Driver in reset cleanup - flushing " 158101649561SJames Smart "NVME Req now. hba_flag x%x\n", 158201649561SJames Smart phba->hba_flag); 158301649561SJames Smart return; 158401649561SJames Smart } 158501649561SJames Smart 1586bbe3012bSJames Smart lpfc_nbuf = freqpriv->nvme_buf; 158701649561SJames Smart if (!lpfc_nbuf) { 158801649561SJames Smart spin_unlock_irqrestore(&phba->hbalock, flags); 158986c67379SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 159001649561SJames Smart "6140 NVME IO req has no matching lpfc nvme " 159101649561SJames Smart "io buffer. Skipping abort req.\n"); 159201649561SJames Smart return; 159301649561SJames Smart } else if (!lpfc_nbuf->nvmeCmd) { 159401649561SJames Smart spin_unlock_irqrestore(&phba->hbalock, flags); 159586c67379SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 159601649561SJames Smart "6141 lpfc NVME IO req has no nvme_fcreq " 159701649561SJames Smart "io buffer. Skipping abort req.\n"); 159801649561SJames Smart return; 159901649561SJames Smart } 16002b7824d0SJames Smart nvmereq_wqe = &lpfc_nbuf->cur_iocbq; 160101649561SJames Smart 160201649561SJames Smart /* 160301649561SJames Smart * The lpfc_nbuf and the mapped nvme_fcreq in the driver's 160401649561SJames Smart * state must match the nvme_fcreq passed by the nvme 160501649561SJames Smart * transport. If they don't match, it is likely the driver 160601649561SJames Smart * has already completed the NVME IO and the nvme transport 160701649561SJames Smart * has not seen it yet. 160801649561SJames Smart */ 160901649561SJames Smart if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) { 161001649561SJames Smart spin_unlock_irqrestore(&phba->hbalock, flags); 161186c67379SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 161201649561SJames Smart "6143 NVME req mismatch: " 161301649561SJames Smart "lpfc_nbuf %p nvmeCmd %p, " 16142b7824d0SJames Smart "pnvme_fcreq %p. Skipping Abort xri x%x\n", 161501649561SJames Smart lpfc_nbuf, lpfc_nbuf->nvmeCmd, 16162b7824d0SJames Smart pnvme_fcreq, nvmereq_wqe->sli4_xritag); 161701649561SJames Smart return; 161801649561SJames Smart } 161901649561SJames Smart 162001649561SJames Smart /* Don't abort IOs no longer on the pending queue. */ 162101649561SJames Smart if (!(nvmereq_wqe->iocb_flag & LPFC_IO_ON_TXCMPLQ)) { 162201649561SJames Smart spin_unlock_irqrestore(&phba->hbalock, flags); 162386c67379SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 162401649561SJames Smart "6142 NVME IO req %p not queued - skipping " 16252b7824d0SJames Smart "abort req xri x%x\n", 16262b7824d0SJames Smart pnvme_fcreq, nvmereq_wqe->sli4_xritag); 162701649561SJames Smart return; 162801649561SJames Smart } 162901649561SJames Smart 1630bd2cdd5eSJames Smart lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n", 1631bd2cdd5eSJames Smart nvmereq_wqe->sli4_xritag, 163200cefeb9SJames Smart nvmereq_wqe->hba_wqidx, pnvme_rport->port_id); 1633bd2cdd5eSJames Smart 163401649561SJames Smart /* Outstanding abort is in progress */ 163501649561SJames Smart if (nvmereq_wqe->iocb_flag & LPFC_DRIVER_ABORTED) { 163601649561SJames Smart spin_unlock_irqrestore(&phba->hbalock, flags); 163786c67379SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 163801649561SJames Smart "6144 Outstanding NVME I/O Abort Request " 163901649561SJames Smart "still pending on nvme_fcreq %p, " 16402b7824d0SJames Smart "lpfc_ncmd %p xri x%x\n", 16412b7824d0SJames Smart pnvme_fcreq, lpfc_nbuf, 16422b7824d0SJames Smart nvmereq_wqe->sli4_xritag); 164301649561SJames Smart return; 164401649561SJames Smart } 164501649561SJames Smart 164601649561SJames Smart abts_buf = __lpfc_sli_get_iocbq(phba); 164701649561SJames Smart if (!abts_buf) { 164801649561SJames Smart spin_unlock_irqrestore(&phba->hbalock, flags); 164986c67379SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 165001649561SJames Smart "6136 No available abort wqes. Skipping " 16512b7824d0SJames Smart "Abts req for nvme_fcreq %p xri x%x\n", 16522b7824d0SJames Smart pnvme_fcreq, nvmereq_wqe->sli4_xritag); 165301649561SJames Smart return; 165401649561SJames Smart } 165501649561SJames Smart 165601649561SJames Smart /* Ready - mark outstanding as aborted by driver. */ 165701649561SJames Smart nvmereq_wqe->iocb_flag |= LPFC_DRIVER_ABORTED; 165801649561SJames Smart 165901649561SJames Smart /* Complete prepping the abort wqe and issue to the FW. */ 166001649561SJames Smart abts_wqe = &abts_buf->wqe; 166101649561SJames Smart 166201649561SJames Smart /* WQEs are reused. Clear stale data and set key fields to 166301649561SJames Smart * zero like ia, iaab, iaar, xri_tag, and ctxt_tag. 166401649561SJames Smart */ 166501649561SJames Smart memset(abts_wqe, 0, sizeof(union lpfc_wqe)); 166601649561SJames Smart bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG); 166701649561SJames Smart 166801649561SJames Smart /* word 7 */ 166901649561SJames Smart bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0); 167001649561SJames Smart bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX); 167101649561SJames Smart bf_set(wqe_class, &abts_wqe->abort_cmd.wqe_com, 167201649561SJames Smart nvmereq_wqe->iocb.ulpClass); 167301649561SJames Smart 167401649561SJames Smart /* word 8 - tell the FW to abort the IO associated with this 167501649561SJames Smart * outstanding exchange ID. 167601649561SJames Smart */ 167701649561SJames Smart abts_wqe->abort_cmd.wqe_com.abort_tag = nvmereq_wqe->sli4_xritag; 167801649561SJames Smart 167901649561SJames Smart /* word 9 - this is the iotag for the abts_wqe completion. */ 168001649561SJames Smart bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com, 168101649561SJames Smart abts_buf->iotag); 168201649561SJames Smart 168301649561SJames Smart /* word 10 */ 168401649561SJames Smart bf_set(wqe_wqid, &abts_wqe->abort_cmd.wqe_com, nvmereq_wqe->hba_wqidx); 168501649561SJames Smart bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1); 168601649561SJames Smart bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE); 168701649561SJames Smart 168801649561SJames Smart /* word 11 */ 168901649561SJames Smart bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND); 169001649561SJames Smart bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1); 169101649561SJames Smart bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 169201649561SJames Smart 169301649561SJames Smart /* ABTS WQE must go to the same WQ as the WQE to be aborted */ 169401649561SJames Smart abts_buf->iocb_flag |= LPFC_IO_NVME; 169501649561SJames Smart abts_buf->hba_wqidx = nvmereq_wqe->hba_wqidx; 169601649561SJames Smart abts_buf->vport = vport; 169701649561SJames Smart abts_buf->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl; 169801649561SJames Smart ret_val = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_buf); 169901649561SJames Smart spin_unlock_irqrestore(&phba->hbalock, flags); 1700cd22d605SDick Kennedy if (ret_val) { 170186c67379SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 170201649561SJames Smart "6137 Failed abts issue_wqe with status x%x " 170301649561SJames Smart "for nvme_fcreq %p.\n", 170401649561SJames Smart ret_val, pnvme_fcreq); 170501649561SJames Smart lpfc_sli_release_iocbq(phba, abts_buf); 170601649561SJames Smart return; 170701649561SJames Smart } 170801649561SJames Smart 170986c67379SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 17102b7824d0SJames Smart "6138 Transport Abort NVME Request Issued for " 171101649561SJames Smart "ox_id x%x on reqtag x%x\n", 171201649561SJames Smart nvmereq_wqe->sli4_xritag, 171301649561SJames Smart abts_buf->iotag); 171401649561SJames Smart } 171501649561SJames Smart 171601649561SJames Smart /* Declare and initialization an instance of the FC NVME template. */ 171701649561SJames Smart static struct nvme_fc_port_template lpfc_nvme_template = { 171801649561SJames Smart /* initiator-based functions */ 171901649561SJames Smart .localport_delete = lpfc_nvme_localport_delete, 172001649561SJames Smart .remoteport_delete = lpfc_nvme_remoteport_delete, 172101649561SJames Smart .create_queue = lpfc_nvme_create_queue, 172201649561SJames Smart .delete_queue = lpfc_nvme_delete_queue, 172301649561SJames Smart .ls_req = lpfc_nvme_ls_req, 172401649561SJames Smart .fcp_io = lpfc_nvme_fcp_io_submit, 172501649561SJames Smart .ls_abort = lpfc_nvme_ls_abort, 172601649561SJames Smart .fcp_abort = lpfc_nvme_fcp_abort, 172701649561SJames Smart 172801649561SJames Smart .max_hw_queues = 1, 172901649561SJames Smart .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 173001649561SJames Smart .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 173101649561SJames Smart .dma_boundary = 0xFFFFFFFF, 173201649561SJames Smart 173301649561SJames Smart /* Sizes of additional private data for data structures. 173401649561SJames Smart * No use for the last two sizes at this time. 173501649561SJames Smart */ 173601649561SJames Smart .local_priv_sz = sizeof(struct lpfc_nvme_lport), 173701649561SJames Smart .remote_priv_sz = sizeof(struct lpfc_nvme_rport), 173801649561SJames Smart .lsrqst_priv_sz = 0, 1739bbe3012bSJames Smart .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv), 174001649561SJames Smart }; 174101649561SJames Smart 174201649561SJames Smart /** 174301649561SJames Smart * lpfc_sli4_post_nvme_sgl_block - post a block of nvme sgl list to firmware 174401649561SJames Smart * @phba: pointer to lpfc hba data structure. 174501649561SJames Smart * @nblist: pointer to nvme buffer list. 174601649561SJames Smart * @count: number of scsi buffers on the list. 174701649561SJames Smart * 174801649561SJames Smart * This routine is invoked to post a block of @count scsi sgl pages from a 174901649561SJames Smart * SCSI buffer list @nblist to the HBA using non-embedded mailbox command. 175001649561SJames Smart * No Lock is held. 175101649561SJames Smart * 175201649561SJames Smart **/ 175301649561SJames Smart static int 175401649561SJames Smart lpfc_sli4_post_nvme_sgl_block(struct lpfc_hba *phba, 175501649561SJames Smart struct list_head *nblist, 175601649561SJames Smart int count) 175701649561SJames Smart { 175801649561SJames Smart struct lpfc_nvme_buf *lpfc_ncmd; 175901649561SJames Smart struct lpfc_mbx_post_uembed_sgl_page1 *sgl; 176001649561SJames Smart struct sgl_page_pairs *sgl_pg_pairs; 176101649561SJames Smart void *viraddr; 176201649561SJames Smart LPFC_MBOXQ_t *mbox; 176301649561SJames Smart uint32_t reqlen, alloclen, pg_pairs; 176401649561SJames Smart uint32_t mbox_tmo; 176501649561SJames Smart uint16_t xritag_start = 0; 176601649561SJames Smart int rc = 0; 176701649561SJames Smart uint32_t shdr_status, shdr_add_status; 176801649561SJames Smart dma_addr_t pdma_phys_bpl1; 176901649561SJames Smart union lpfc_sli4_cfg_shdr *shdr; 177001649561SJames Smart 177101649561SJames Smart /* Calculate the requested length of the dma memory */ 177201649561SJames Smart reqlen = count * sizeof(struct sgl_page_pairs) + 177301649561SJames Smart sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); 177401649561SJames Smart if (reqlen > SLI4_PAGE_SIZE) { 177501649561SJames Smart lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 177601649561SJames Smart "6118 Block sgl registration required DMA " 177701649561SJames Smart "size (%d) great than a page\n", reqlen); 177801649561SJames Smart return -ENOMEM; 177901649561SJames Smart } 178001649561SJames Smart mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 178101649561SJames Smart if (!mbox) { 178201649561SJames Smart lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 178301649561SJames Smart "6119 Failed to allocate mbox cmd memory\n"); 178401649561SJames Smart return -ENOMEM; 178501649561SJames Smart } 178601649561SJames Smart 178701649561SJames Smart /* Allocate DMA memory and set up the non-embedded mailbox command */ 178801649561SJames Smart alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, 178901649561SJames Smart LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, 179001649561SJames Smart LPFC_SLI4_MBX_NEMBED); 179101649561SJames Smart 179201649561SJames Smart if (alloclen < reqlen) { 179301649561SJames Smart lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 179401649561SJames Smart "6120 Allocated DMA memory size (%d) is " 179501649561SJames Smart "less than the requested DMA memory " 179601649561SJames Smart "size (%d)\n", alloclen, reqlen); 179701649561SJames Smart lpfc_sli4_mbox_cmd_free(phba, mbox); 179801649561SJames Smart return -ENOMEM; 179901649561SJames Smart } 180001649561SJames Smart 180101649561SJames Smart /* Get the first SGE entry from the non-embedded DMA memory */ 180201649561SJames Smart viraddr = mbox->sge_array->addr[0]; 180301649561SJames Smart 180401649561SJames Smart /* Set up the SGL pages in the non-embedded DMA pages */ 180501649561SJames Smart sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; 180601649561SJames Smart sgl_pg_pairs = &sgl->sgl_pg_pairs; 180701649561SJames Smart 180801649561SJames Smart pg_pairs = 0; 180901649561SJames Smart list_for_each_entry(lpfc_ncmd, nblist, list) { 181001649561SJames Smart /* Set up the sge entry */ 181101649561SJames Smart sgl_pg_pairs->sgl_pg0_addr_lo = 181201649561SJames Smart cpu_to_le32(putPaddrLow(lpfc_ncmd->dma_phys_sgl)); 181301649561SJames Smart sgl_pg_pairs->sgl_pg0_addr_hi = 181401649561SJames Smart cpu_to_le32(putPaddrHigh(lpfc_ncmd->dma_phys_sgl)); 181501649561SJames Smart if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) 181601649561SJames Smart pdma_phys_bpl1 = lpfc_ncmd->dma_phys_sgl + 181701649561SJames Smart SGL_PAGE_SIZE; 181801649561SJames Smart else 181901649561SJames Smart pdma_phys_bpl1 = 0; 182001649561SJames Smart sgl_pg_pairs->sgl_pg1_addr_lo = 182101649561SJames Smart cpu_to_le32(putPaddrLow(pdma_phys_bpl1)); 182201649561SJames Smart sgl_pg_pairs->sgl_pg1_addr_hi = 182301649561SJames Smart cpu_to_le32(putPaddrHigh(pdma_phys_bpl1)); 182401649561SJames Smart /* Keep the first xritag on the list */ 182501649561SJames Smart if (pg_pairs == 0) 182601649561SJames Smart xritag_start = lpfc_ncmd->cur_iocbq.sli4_xritag; 182701649561SJames Smart sgl_pg_pairs++; 182801649561SJames Smart pg_pairs++; 182901649561SJames Smart } 183001649561SJames Smart bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); 183101649561SJames Smart bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs); 183201649561SJames Smart /* Perform endian conversion if necessary */ 183301649561SJames Smart sgl->word0 = cpu_to_le32(sgl->word0); 183401649561SJames Smart 183501649561SJames Smart if (!phba->sli4_hba.intr_enable) 183601649561SJames Smart rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); 183701649561SJames Smart else { 183801649561SJames Smart mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); 183901649561SJames Smart rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); 184001649561SJames Smart } 184101649561SJames Smart shdr = (union lpfc_sli4_cfg_shdr *)&sgl->cfg_shdr; 184201649561SJames Smart shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 184301649561SJames Smart shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 184401649561SJames Smart if (rc != MBX_TIMEOUT) 184501649561SJames Smart lpfc_sli4_mbox_cmd_free(phba, mbox); 184601649561SJames Smart if (shdr_status || shdr_add_status || rc) { 184701649561SJames Smart lpfc_printf_log(phba, KERN_ERR, LOG_SLI, 184801649561SJames Smart "6125 POST_SGL_BLOCK mailbox command failed " 184901649561SJames Smart "status x%x add_status x%x mbx status x%x\n", 185001649561SJames Smart shdr_status, shdr_add_status, rc); 185101649561SJames Smart rc = -ENXIO; 185201649561SJames Smart } 185301649561SJames Smart return rc; 185401649561SJames Smart } 185501649561SJames Smart 185601649561SJames Smart /** 185701649561SJames Smart * lpfc_post_nvme_sgl_list - Post blocks of nvme buffer sgls from a list 185801649561SJames Smart * @phba: pointer to lpfc hba data structure. 185901649561SJames Smart * @post_nblist: pointer to the nvme buffer list. 186001649561SJames Smart * 186101649561SJames Smart * This routine walks a list of nvme buffers that was passed in. It attempts 186201649561SJames Smart * to construct blocks of nvme buffer sgls which contains contiguous xris and 186301649561SJames Smart * uses the non-embedded SGL block post mailbox commands to post to the port. 186401649561SJames Smart * For single NVME buffer sgl with non-contiguous xri, if any, it shall use 186501649561SJames Smart * embedded SGL post mailbox command for posting. The @post_nblist passed in 186601649561SJames Smart * must be local list, thus no lock is needed when manipulate the list. 186701649561SJames Smart * 186801649561SJames Smart * Returns: 0 = failure, non-zero number of successfully posted buffers. 186901649561SJames Smart **/ 187001649561SJames Smart static int 187101649561SJames Smart lpfc_post_nvme_sgl_list(struct lpfc_hba *phba, 187201649561SJames Smart struct list_head *post_nblist, int sb_count) 187301649561SJames Smart { 187401649561SJames Smart struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next; 187501649561SJames Smart int status, sgl_size; 187601649561SJames Smart int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0; 187701649561SJames Smart dma_addr_t pdma_phys_sgl1; 187801649561SJames Smart int last_xritag = NO_XRI; 187901649561SJames Smart int cur_xritag; 188001649561SJames Smart LIST_HEAD(prep_nblist); 188101649561SJames Smart LIST_HEAD(blck_nblist); 188201649561SJames Smart LIST_HEAD(nvme_nblist); 188301649561SJames Smart 188401649561SJames Smart /* sanity check */ 188501649561SJames Smart if (sb_count <= 0) 188601649561SJames Smart return -EINVAL; 188701649561SJames Smart 188801649561SJames Smart sgl_size = phba->cfg_sg_dma_buf_size; 188901649561SJames Smart 189001649561SJames Smart list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, post_nblist, list) { 189101649561SJames Smart list_del_init(&lpfc_ncmd->list); 189201649561SJames Smart block_cnt++; 189301649561SJames Smart if ((last_xritag != NO_XRI) && 189401649561SJames Smart (lpfc_ncmd->cur_iocbq.sli4_xritag != last_xritag + 1)) { 189501649561SJames Smart /* a hole in xri block, form a sgl posting block */ 189601649561SJames Smart list_splice_init(&prep_nblist, &blck_nblist); 189701649561SJames Smart post_cnt = block_cnt - 1; 189801649561SJames Smart /* prepare list for next posting block */ 189901649561SJames Smart list_add_tail(&lpfc_ncmd->list, &prep_nblist); 190001649561SJames Smart block_cnt = 1; 190101649561SJames Smart } else { 190201649561SJames Smart /* prepare list for next posting block */ 190301649561SJames Smart list_add_tail(&lpfc_ncmd->list, &prep_nblist); 190401649561SJames Smart /* enough sgls for non-embed sgl mbox command */ 190501649561SJames Smart if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) { 190601649561SJames Smart list_splice_init(&prep_nblist, &blck_nblist); 190701649561SJames Smart post_cnt = block_cnt; 190801649561SJames Smart block_cnt = 0; 190901649561SJames Smart } 191001649561SJames Smart } 191101649561SJames Smart num_posting++; 191201649561SJames Smart last_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag; 191301649561SJames Smart 191401649561SJames Smart /* end of repost sgl list condition for NVME buffers */ 191501649561SJames Smart if (num_posting == sb_count) { 191601649561SJames Smart if (post_cnt == 0) { 191701649561SJames Smart /* last sgl posting block */ 191801649561SJames Smart list_splice_init(&prep_nblist, &blck_nblist); 191901649561SJames Smart post_cnt = block_cnt; 192001649561SJames Smart } else if (block_cnt == 1) { 192101649561SJames Smart /* last single sgl with non-contiguous xri */ 192201649561SJames Smart if (sgl_size > SGL_PAGE_SIZE) 192301649561SJames Smart pdma_phys_sgl1 = 192401649561SJames Smart lpfc_ncmd->dma_phys_sgl + 192501649561SJames Smart SGL_PAGE_SIZE; 192601649561SJames Smart else 192701649561SJames Smart pdma_phys_sgl1 = 0; 192801649561SJames Smart cur_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag; 192901649561SJames Smart status = lpfc_sli4_post_sgl(phba, 193001649561SJames Smart lpfc_ncmd->dma_phys_sgl, 193101649561SJames Smart pdma_phys_sgl1, cur_xritag); 193201649561SJames Smart if (status) { 193301649561SJames Smart /* failure, put on abort nvme list */ 1934318083adSJames Smart lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 193501649561SJames Smart } else { 193601649561SJames Smart /* success, put on NVME buffer list */ 1937318083adSJames Smart lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 193801649561SJames Smart lpfc_ncmd->status = IOSTAT_SUCCESS; 193901649561SJames Smart num_posted++; 194001649561SJames Smart } 194101649561SJames Smart /* success, put on NVME buffer sgl list */ 194201649561SJames Smart list_add_tail(&lpfc_ncmd->list, &nvme_nblist); 194301649561SJames Smart } 194401649561SJames Smart } 194501649561SJames Smart 194601649561SJames Smart /* continue until a nembed page worth of sgls */ 194701649561SJames Smart if (post_cnt == 0) 194801649561SJames Smart continue; 194901649561SJames Smart 195001649561SJames Smart /* post block of NVME buffer list sgls */ 195101649561SJames Smart status = lpfc_sli4_post_nvme_sgl_block(phba, &blck_nblist, 195201649561SJames Smart post_cnt); 195301649561SJames Smart 195401649561SJames Smart /* don't reset xirtag due to hole in xri block */ 195501649561SJames Smart if (block_cnt == 0) 195601649561SJames Smart last_xritag = NO_XRI; 195701649561SJames Smart 195801649561SJames Smart /* reset NVME buffer post count for next round of posting */ 195901649561SJames Smart post_cnt = 0; 196001649561SJames Smart 196101649561SJames Smart /* put posted NVME buffer-sgl posted on NVME buffer sgl list */ 196201649561SJames Smart while (!list_empty(&blck_nblist)) { 196301649561SJames Smart list_remove_head(&blck_nblist, lpfc_ncmd, 196401649561SJames Smart struct lpfc_nvme_buf, list); 196501649561SJames Smart if (status) { 196601649561SJames Smart /* failure, put on abort nvme list */ 1967318083adSJames Smart lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 196801649561SJames Smart } else { 196901649561SJames Smart /* success, put on NVME buffer list */ 1970318083adSJames Smart lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 197101649561SJames Smart lpfc_ncmd->status = IOSTAT_SUCCESS; 197201649561SJames Smart num_posted++; 197301649561SJames Smart } 197401649561SJames Smart list_add_tail(&lpfc_ncmd->list, &nvme_nblist); 197501649561SJames Smart } 197601649561SJames Smart } 197701649561SJames Smart /* Push NVME buffers with sgl posted to the available list */ 197801649561SJames Smart while (!list_empty(&nvme_nblist)) { 197901649561SJames Smart list_remove_head(&nvme_nblist, lpfc_ncmd, 198001649561SJames Smart struct lpfc_nvme_buf, list); 198101649561SJames Smart lpfc_release_nvme_buf(phba, lpfc_ncmd); 198201649561SJames Smart } 198301649561SJames Smart return num_posted; 198401649561SJames Smart } 198501649561SJames Smart 198601649561SJames Smart /** 198701649561SJames Smart * lpfc_repost_nvme_sgl_list - Repost all the allocated nvme buffer sgls 198801649561SJames Smart * @phba: pointer to lpfc hba data structure. 198901649561SJames Smart * 199001649561SJames Smart * This routine walks the list of nvme buffers that have been allocated and 199101649561SJames Smart * repost them to the port by using SGL block post. This is needed after a 199201649561SJames Smart * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine 199301649561SJames Smart * is responsible for moving all nvme buffers on the lpfc_abts_nvme_sgl_list 199401649561SJames Smart * to the lpfc_nvme_buf_list. If the repost fails, reject all nvme buffers. 199501649561SJames Smart * 199601649561SJames Smart * Returns: 0 = success, non-zero failure. 199701649561SJames Smart **/ 199801649561SJames Smart int 199901649561SJames Smart lpfc_repost_nvme_sgl_list(struct lpfc_hba *phba) 200001649561SJames Smart { 200101649561SJames Smart LIST_HEAD(post_nblist); 200201649561SJames Smart int num_posted, rc = 0; 200301649561SJames Smart 200401649561SJames Smart /* get all NVME buffers need to repost to a local list */ 200501649561SJames Smart spin_lock_irq(&phba->nvme_buf_list_get_lock); 200601649561SJames Smart spin_lock(&phba->nvme_buf_list_put_lock); 200701649561SJames Smart list_splice_init(&phba->lpfc_nvme_buf_list_get, &post_nblist); 200801649561SJames Smart list_splice(&phba->lpfc_nvme_buf_list_put, &post_nblist); 2009*cf1a1d3eSJames Smart phba->get_nvme_bufs = 0; 2010*cf1a1d3eSJames Smart phba->put_nvme_bufs = 0; 201101649561SJames Smart spin_unlock(&phba->nvme_buf_list_put_lock); 201201649561SJames Smart spin_unlock_irq(&phba->nvme_buf_list_get_lock); 201301649561SJames Smart 201401649561SJames Smart /* post the list of nvme buffer sgls to port if available */ 201501649561SJames Smart if (!list_empty(&post_nblist)) { 201601649561SJames Smart num_posted = lpfc_post_nvme_sgl_list(phba, &post_nblist, 201701649561SJames Smart phba->sli4_hba.nvme_xri_cnt); 201801649561SJames Smart /* failed to post any nvme buffer, return error */ 201901649561SJames Smart if (num_posted == 0) 202001649561SJames Smart rc = -EIO; 202101649561SJames Smart } 202201649561SJames Smart return rc; 202301649561SJames Smart } 202401649561SJames Smart 202501649561SJames Smart /** 202601649561SJames Smart * lpfc_new_nvme_buf - Scsi buffer allocator for HBA with SLI4 IF spec 202701649561SJames Smart * @vport: The virtual port for which this call being executed. 202801649561SJames Smart * @num_to_allocate: The requested number of buffers to allocate. 202901649561SJames Smart * 203001649561SJames Smart * This routine allocates nvme buffers for device with SLI-4 interface spec, 203101649561SJames Smart * the nvme buffer contains all the necessary information needed to initiate 203201649561SJames Smart * a NVME I/O. After allocating up to @num_to_allocate NVME buffers and put 203301649561SJames Smart * them on a list, it post them to the port by using SGL block post. 203401649561SJames Smart * 203501649561SJames Smart * Return codes: 203601649561SJames Smart * int - number of nvme buffers that were allocated and posted. 203701649561SJames Smart * 0 = failure, less than num_to_alloc is a partial failure. 203801649561SJames Smart **/ 203901649561SJames Smart static int 204001649561SJames Smart lpfc_new_nvme_buf(struct lpfc_vport *vport, int num_to_alloc) 204101649561SJames Smart { 204201649561SJames Smart struct lpfc_hba *phba = vport->phba; 204301649561SJames Smart struct lpfc_nvme_buf *lpfc_ncmd; 204401649561SJames Smart struct lpfc_iocbq *pwqeq; 204501649561SJames Smart union lpfc_wqe128 *wqe; 204601649561SJames Smart struct sli4_sge *sgl; 204701649561SJames Smart dma_addr_t pdma_phys_sgl; 204801649561SJames Smart uint16_t iotag, lxri = 0; 204901649561SJames Smart int bcnt, num_posted, sgl_size; 205001649561SJames Smart LIST_HEAD(prep_nblist); 205101649561SJames Smart LIST_HEAD(post_nblist); 205201649561SJames Smart LIST_HEAD(nvme_nblist); 205301649561SJames Smart 205401649561SJames Smart sgl_size = phba->cfg_sg_dma_buf_size; 205501649561SJames Smart 205601649561SJames Smart for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { 205701649561SJames Smart lpfc_ncmd = kzalloc(sizeof(struct lpfc_nvme_buf), GFP_KERNEL); 205801649561SJames Smart if (!lpfc_ncmd) 205901649561SJames Smart break; 206001649561SJames Smart /* 206101649561SJames Smart * Get memory from the pci pool to map the virt space to 206201649561SJames Smart * pci bus space for an I/O. The DMA buffer includes the 206301649561SJames Smart * number of SGE's necessary to support the sg_tablesize. 206401649561SJames Smart */ 2065df2f7729SThomas Meyer lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool, 206601649561SJames Smart GFP_KERNEL, 206701649561SJames Smart &lpfc_ncmd->dma_handle); 206801649561SJames Smart if (!lpfc_ncmd->data) { 206901649561SJames Smart kfree(lpfc_ncmd); 207001649561SJames Smart break; 207101649561SJames Smart } 207201649561SJames Smart 207301649561SJames Smart lxri = lpfc_sli4_next_xritag(phba); 207401649561SJames Smart if (lxri == NO_XRI) { 2075771db5c0SRomain Perier dma_pool_free(phba->lpfc_sg_dma_buf_pool, 207601649561SJames Smart lpfc_ncmd->data, lpfc_ncmd->dma_handle); 207701649561SJames Smart kfree(lpfc_ncmd); 207801649561SJames Smart break; 207901649561SJames Smart } 208001649561SJames Smart pwqeq = &(lpfc_ncmd->cur_iocbq); 208101649561SJames Smart wqe = (union lpfc_wqe128 *)&pwqeq->wqe; 208201649561SJames Smart 208301649561SJames Smart /* Allocate iotag for lpfc_ncmd->cur_iocbq. */ 208401649561SJames Smart iotag = lpfc_sli_next_iotag(phba, pwqeq); 208501649561SJames Smart if (iotag == 0) { 2086771db5c0SRomain Perier dma_pool_free(phba->lpfc_sg_dma_buf_pool, 208701649561SJames Smart lpfc_ncmd->data, lpfc_ncmd->dma_handle); 208801649561SJames Smart kfree(lpfc_ncmd); 208901649561SJames Smart lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 209001649561SJames Smart "6121 Failed to allocated IOTAG for" 209101649561SJames Smart " XRI:0x%x\n", lxri); 209201649561SJames Smart lpfc_sli4_free_xri(phba, lxri); 209301649561SJames Smart break; 209401649561SJames Smart } 209501649561SJames Smart pwqeq->sli4_lxritag = lxri; 209601649561SJames Smart pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri]; 209701649561SJames Smart pwqeq->iocb_flag |= LPFC_IO_NVME; 209801649561SJames Smart pwqeq->context1 = lpfc_ncmd; 209901649561SJames Smart pwqeq->wqe_cmpl = lpfc_nvme_io_cmd_wqe_cmpl; 210001649561SJames Smart 210101649561SJames Smart /* Initialize local short-hand pointers. */ 210201649561SJames Smart lpfc_ncmd->nvme_sgl = lpfc_ncmd->data; 210301649561SJames Smart sgl = lpfc_ncmd->nvme_sgl; 210401649561SJames Smart pdma_phys_sgl = lpfc_ncmd->dma_handle; 210501649561SJames Smart lpfc_ncmd->dma_phys_sgl = pdma_phys_sgl; 210601649561SJames Smart 210701649561SJames Smart /* Rsp SGE will be filled in when we rcv an IO 210801649561SJames Smart * from the NVME Layer to be sent. 210901649561SJames Smart * The cmd is going to be embedded so we need a SKIP SGE. 211001649561SJames Smart */ 211101649561SJames Smart bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 211201649561SJames Smart bf_set(lpfc_sli4_sge_last, sgl, 0); 211301649561SJames Smart sgl->word2 = cpu_to_le32(sgl->word2); 211401649561SJames Smart /* Fill in word 3 / sgl_len during cmd submission */ 211501649561SJames Smart 211601649561SJames Smart lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd; 211701649561SJames Smart 211801649561SJames Smart /* Word 7 */ 211901649561SJames Smart bf_set(wqe_erp, &wqe->generic.wqe_com, 0); 212001649561SJames Smart /* NVME upper layers will time things out, if needed */ 212101649561SJames Smart bf_set(wqe_tmo, &wqe->generic.wqe_com, 0); 212201649561SJames Smart 212301649561SJames Smart /* Word 10 */ 212401649561SJames Smart bf_set(wqe_ebde_cnt, &wqe->generic.wqe_com, 0); 212501649561SJames Smart bf_set(wqe_dbde, &wqe->generic.wqe_com, 1); 212601649561SJames Smart 212701649561SJames Smart /* add the nvme buffer to a post list */ 212801649561SJames Smart list_add_tail(&lpfc_ncmd->list, &post_nblist); 212901649561SJames Smart spin_lock_irq(&phba->nvme_buf_list_get_lock); 213001649561SJames Smart phba->sli4_hba.nvme_xri_cnt++; 213101649561SJames Smart spin_unlock_irq(&phba->nvme_buf_list_get_lock); 213201649561SJames Smart } 213301649561SJames Smart lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 213401649561SJames Smart "6114 Allocate %d out of %d requested new NVME " 213501649561SJames Smart "buffers\n", bcnt, num_to_alloc); 213601649561SJames Smart 213701649561SJames Smart /* post the list of nvme buffer sgls to port if available */ 213801649561SJames Smart if (!list_empty(&post_nblist)) 213901649561SJames Smart num_posted = lpfc_post_nvme_sgl_list(phba, 214001649561SJames Smart &post_nblist, bcnt); 214101649561SJames Smart else 214201649561SJames Smart num_posted = 0; 214301649561SJames Smart 214401649561SJames Smart return num_posted; 214501649561SJames Smart } 214601649561SJames Smart 2147*cf1a1d3eSJames Smart static inline struct lpfc_nvme_buf * 2148*cf1a1d3eSJames Smart lpfc_nvme_buf(struct lpfc_hba *phba) 2149*cf1a1d3eSJames Smart { 2150*cf1a1d3eSJames Smart struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next; 2151*cf1a1d3eSJames Smart 2152*cf1a1d3eSJames Smart list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, 2153*cf1a1d3eSJames Smart &phba->lpfc_nvme_buf_list_get, list) { 2154*cf1a1d3eSJames Smart list_del_init(&lpfc_ncmd->list); 2155*cf1a1d3eSJames Smart phba->get_nvme_bufs--; 2156*cf1a1d3eSJames Smart return lpfc_ncmd; 2157*cf1a1d3eSJames Smart } 2158*cf1a1d3eSJames Smart return NULL; 2159*cf1a1d3eSJames Smart } 2160*cf1a1d3eSJames Smart 216101649561SJames Smart /** 216201649561SJames Smart * lpfc_get_nvme_buf - Get a nvme buffer from lpfc_nvme_buf_list of the HBA 216301649561SJames Smart * @phba: The HBA for which this call is being executed. 216401649561SJames Smart * 216501649561SJames Smart * This routine removes a nvme buffer from head of @phba lpfc_nvme_buf_list list 216601649561SJames Smart * and returns to caller. 216701649561SJames Smart * 216801649561SJames Smart * Return codes: 216901649561SJames Smart * NULL - Error 217001649561SJames Smart * Pointer to lpfc_nvme_buf - Success 217101649561SJames Smart **/ 217201649561SJames Smart static struct lpfc_nvme_buf * 2173*cf1a1d3eSJames Smart lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 2174*cf1a1d3eSJames Smart int expedite) 217501649561SJames Smart { 2176*cf1a1d3eSJames Smart struct lpfc_nvme_buf *lpfc_ncmd = NULL; 217701649561SJames Smart unsigned long iflag = 0; 217801649561SJames Smart 217901649561SJames Smart spin_lock_irqsave(&phba->nvme_buf_list_get_lock, iflag); 2180*cf1a1d3eSJames Smart if (phba->get_nvme_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite) 2181*cf1a1d3eSJames Smart lpfc_ncmd = lpfc_nvme_buf(phba); 2182*cf1a1d3eSJames Smart if (!lpfc_ncmd) { 218301649561SJames Smart spin_lock(&phba->nvme_buf_list_put_lock); 218401649561SJames Smart list_splice(&phba->lpfc_nvme_buf_list_put, 218501649561SJames Smart &phba->lpfc_nvme_buf_list_get); 2186*cf1a1d3eSJames Smart phba->get_nvme_bufs += phba->put_nvme_bufs; 218701649561SJames Smart INIT_LIST_HEAD(&phba->lpfc_nvme_buf_list_put); 2188*cf1a1d3eSJames Smart phba->put_nvme_bufs = 0; 218901649561SJames Smart spin_unlock(&phba->nvme_buf_list_put_lock); 2190*cf1a1d3eSJames Smart if (phba->get_nvme_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite) 2191*cf1a1d3eSJames Smart lpfc_ncmd = lpfc_nvme_buf(phba); 219201649561SJames Smart } 219301649561SJames Smart spin_unlock_irqrestore(&phba->nvme_buf_list_get_lock, iflag); 219401649561SJames Smart return lpfc_ncmd; 219501649561SJames Smart } 219601649561SJames Smart 219701649561SJames Smart /** 219801649561SJames Smart * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list. 219901649561SJames Smart * @phba: The Hba for which this call is being executed. 220001649561SJames Smart * @lpfc_ncmd: The nvme buffer which is being released. 220101649561SJames Smart * 220201649561SJames Smart * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba 220301649561SJames Smart * lpfc_nvme_buf_list list. For SLI4 XRI's are tied to the nvme buffer 220401649561SJames Smart * and cannot be reused for at least RA_TOV amount of time if it was 220501649561SJames Smart * aborted. 220601649561SJames Smart **/ 220701649561SJames Smart static void 220801649561SJames Smart lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_nvme_buf *lpfc_ncmd) 220901649561SJames Smart { 221001649561SJames Smart unsigned long iflag = 0; 221101649561SJames Smart 221201649561SJames Smart lpfc_ncmd->nonsg_phys = 0; 2213318083adSJames Smart if (lpfc_ncmd->flags & LPFC_SBUF_XBUSY) { 221486c67379SJames Smart lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 221586c67379SJames Smart "6310 XB release deferred for " 221686c67379SJames Smart "ox_id x%x on reqtag x%x\n", 221786c67379SJames Smart lpfc_ncmd->cur_iocbq.sli4_xritag, 221886c67379SJames Smart lpfc_ncmd->cur_iocbq.iotag); 221986c67379SJames Smart 222001649561SJames Smart spin_lock_irqsave(&phba->sli4_hba.abts_nvme_buf_list_lock, 222101649561SJames Smart iflag); 222201649561SJames Smart list_add_tail(&lpfc_ncmd->list, 222301649561SJames Smart &phba->sli4_hba.lpfc_abts_nvme_buf_list); 222401649561SJames Smart spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock, 222501649561SJames Smart iflag); 222601649561SJames Smart } else { 222701649561SJames Smart lpfc_ncmd->nvmeCmd = NULL; 222801649561SJames Smart lpfc_ncmd->cur_iocbq.iocb_flag = LPFC_IO_NVME; 222901649561SJames Smart spin_lock_irqsave(&phba->nvme_buf_list_put_lock, iflag); 223001649561SJames Smart list_add_tail(&lpfc_ncmd->list, &phba->lpfc_nvme_buf_list_put); 2231*cf1a1d3eSJames Smart phba->put_nvme_bufs++; 223201649561SJames Smart spin_unlock_irqrestore(&phba->nvme_buf_list_put_lock, iflag); 223301649561SJames Smart } 223401649561SJames Smart } 223501649561SJames Smart 223601649561SJames Smart /** 223701649561SJames Smart * lpfc_nvme_create_localport - Create/Bind an nvme localport instance. 223801649561SJames Smart * @pvport - the lpfc_vport instance requesting a localport. 223901649561SJames Smart * 224001649561SJames Smart * This routine is invoked to create an nvme localport instance to bind 224101649561SJames Smart * to the nvme_fc_transport. It is called once during driver load 224201649561SJames Smart * like lpfc_create_shost after all other services are initialized. 224301649561SJames Smart * It requires a vport, vpi, and wwns at call time. Other localport 224401649561SJames Smart * parameters are modified as the driver's FCID and the Fabric WWN 224501649561SJames Smart * are established. 224601649561SJames Smart * 224701649561SJames Smart * Return codes 224801649561SJames Smart * 0 - successful 224901649561SJames Smart * -ENOMEM - no heap memory available 225001649561SJames Smart * other values - from nvme registration upcall 225101649561SJames Smart **/ 225201649561SJames Smart int 225301649561SJames Smart lpfc_nvme_create_localport(struct lpfc_vport *vport) 225401649561SJames Smart { 2255166d7211SJames Smart int ret = 0; 225601649561SJames Smart struct lpfc_hba *phba = vport->phba; 225701649561SJames Smart struct nvme_fc_port_info nfcp_info; 225801649561SJames Smart struct nvme_fc_local_port *localport; 225901649561SJames Smart struct lpfc_nvme_lport *lport; 2260166d7211SJames Smart int len; 226101649561SJames Smart 226201649561SJames Smart /* Initialize this localport instance. The vport wwn usage ensures 226301649561SJames Smart * that NPIV is accounted for. 226401649561SJames Smart */ 226501649561SJames Smart memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info)); 226601649561SJames Smart nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR; 226701649561SJames Smart nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 226801649561SJames Smart nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 226901649561SJames Smart 22704d4c4a4aSJames Smart /* Limit to LPFC_MAX_NVME_SEG_CNT. 22714d4c4a4aSJames Smart * For now need + 1 to get around NVME transport logic. 22724d4c4a4aSJames Smart */ 22734d4c4a4aSJames Smart if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) { 22744d4c4a4aSJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_INIT, 22754d4c4a4aSJames Smart "6300 Reducing sg segment cnt to %d\n", 22764d4c4a4aSJames Smart LPFC_MAX_NVME_SEG_CNT); 22774d4c4a4aSJames Smart phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT; 22784d4c4a4aSJames Smart } else { 22794d4c4a4aSJames Smart phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt; 22804d4c4a4aSJames Smart } 22814d4c4a4aSJames Smart lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 228201649561SJames Smart lpfc_nvme_template.max_hw_queues = phba->cfg_nvme_io_channel; 228301649561SJames Smart 228401649561SJames Smart /* localport is allocated from the stack, but the registration 228501649561SJames Smart * call allocates heap memory as well as the private area. 228601649561SJames Smart */ 22877d708033SJames Smart #if (IS_ENABLED(CONFIG_NVME_FC)) 228801649561SJames Smart ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template, 228901649561SJames Smart &vport->phba->pcidev->dev, &localport); 2290166d7211SJames Smart #else 2291166d7211SJames Smart ret = -ENOMEM; 2292166d7211SJames Smart #endif 229301649561SJames Smart if (!ret) { 229401649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC, 229501649561SJames Smart "6005 Successfully registered local " 229601649561SJames Smart "NVME port num %d, localP %p, private %p, " 229701649561SJames Smart "sg_seg %d\n", 229801649561SJames Smart localport->port_num, localport, 229901649561SJames Smart localport->private, 230001649561SJames Smart lpfc_nvme_template.max_sgl_segments); 230101649561SJames Smart 230201649561SJames Smart /* Private is our lport size declared in the template. */ 230301649561SJames Smart lport = (struct lpfc_nvme_lport *)localport->private; 230401649561SJames Smart vport->localport = localport; 230501649561SJames Smart lport->vport = vport; 230601649561SJames Smart vport->nvmei_support = 1; 23076b486ce9SDick Kennedy 23086b486ce9SDick Kennedy /* Don't post more new bufs if repost already recovered 23096b486ce9SDick Kennedy * the nvme sgls. 23106b486ce9SDick Kennedy */ 23116b486ce9SDick Kennedy if (phba->sli4_hba.nvme_xri_cnt == 0) { 23126b486ce9SDick Kennedy len = lpfc_new_nvme_buf(vport, 23136b486ce9SDick Kennedy phba->sli4_hba.nvme_xri_max); 231401649561SJames Smart vport->phba->total_nvme_bufs += len; 23153ebd9b47SJames Smart } 23166b486ce9SDick Kennedy } 23173ebd9b47SJames Smart 231801649561SJames Smart return ret; 231901649561SJames Smart } 232001649561SJames Smart 2321add9d6beSJames Smart /* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg. 2322add9d6beSJames Smart * 2323add9d6beSJames Smart * The driver has to wait for the host nvme transport to callback 2324add9d6beSJames Smart * indicating the localport has successfully unregistered all 2325add9d6beSJames Smart * resources. Since this is an uninterruptible wait, loop every ten 2326add9d6beSJames Smart * seconds and print a message indicating no progress. 2327add9d6beSJames Smart * 2328add9d6beSJames Smart * An uninterruptible wait is used because of the risk of transport-to- 2329add9d6beSJames Smart * driver state mismatch. 2330add9d6beSJames Smart */ 2331add9d6beSJames Smart void 2332add9d6beSJames Smart lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport, 2333add9d6beSJames Smart struct lpfc_nvme_lport *lport) 2334add9d6beSJames Smart { 2335add9d6beSJames Smart #if (IS_ENABLED(CONFIG_NVME_FC)) 2336add9d6beSJames Smart u32 wait_tmo; 2337add9d6beSJames Smart int ret; 2338add9d6beSJames Smart 2339add9d6beSJames Smart /* Host transport has to clean up and confirm requiring an indefinite 2340add9d6beSJames Smart * wait. Print a message if a 10 second wait expires and renew the 2341add9d6beSJames Smart * wait. This is unexpected. 2342add9d6beSJames Smart */ 2343add9d6beSJames Smart wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000); 2344add9d6beSJames Smart while (true) { 2345add9d6beSJames Smart ret = wait_for_completion_timeout(&lport->lport_unreg_done, 2346add9d6beSJames Smart wait_tmo); 2347add9d6beSJames Smart if (unlikely(!ret)) { 2348add9d6beSJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 2349add9d6beSJames Smart "6176 Lport %p Localport %p wait " 2350add9d6beSJames Smart "timed out. Renewing.\n", 2351add9d6beSJames Smart lport, vport->localport); 2352add9d6beSJames Smart continue; 2353add9d6beSJames Smart } 2354add9d6beSJames Smart break; 2355add9d6beSJames Smart } 2356add9d6beSJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 2357add9d6beSJames Smart "6177 Lport %p Localport %p Complete Success\n", 2358add9d6beSJames Smart lport, vport->localport); 2359add9d6beSJames Smart #endif 2360add9d6beSJames Smart } 2361add9d6beSJames Smart 236201649561SJames Smart /** 236301649561SJames Smart * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport. 236401649561SJames Smart * @pnvme: pointer to lpfc nvme data structure. 236501649561SJames Smart * 236601649561SJames Smart * This routine is invoked to destroy all lports bound to the phba. 236701649561SJames Smart * The lport memory was allocated by the nvme fc transport and is 236801649561SJames Smart * released there. This routine ensures all rports bound to the 236901649561SJames Smart * lport have been disconnected. 237001649561SJames Smart * 237101649561SJames Smart **/ 237201649561SJames Smart void 237301649561SJames Smart lpfc_nvme_destroy_localport(struct lpfc_vport *vport) 237401649561SJames Smart { 23757d708033SJames Smart #if (IS_ENABLED(CONFIG_NVME_FC)) 237601649561SJames Smart struct nvme_fc_local_port *localport; 237701649561SJames Smart struct lpfc_nvme_lport *lport; 237801649561SJames Smart int ret; 237901649561SJames Smart 238001649561SJames Smart if (vport->nvmei_support == 0) 238101649561SJames Smart return; 238201649561SJames Smart 238301649561SJames Smart localport = vport->localport; 238401649561SJames Smart vport->localport = NULL; 238501649561SJames Smart lport = (struct lpfc_nvme_lport *)localport->private; 238601649561SJames Smart 238701649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 238801649561SJames Smart "6011 Destroying NVME localport %p\n", 238901649561SJames Smart localport); 2390166d7211SJames Smart 239101649561SJames Smart /* lport's rport list is clear. Unregister 239201649561SJames Smart * lport and release resources. 239301649561SJames Smart */ 239401649561SJames Smart init_completion(&lport->lport_unreg_done); 239501649561SJames Smart ret = nvme_fc_unregister_localport(localport); 2396add9d6beSJames Smart 2397add9d6beSJames Smart /* Wait for completion. This either blocks 2398add9d6beSJames Smart * indefinitely or succeeds 2399add9d6beSJames Smart */ 2400add9d6beSJames Smart lpfc_nvme_lport_unreg_wait(vport, lport); 240101649561SJames Smart 240201649561SJames Smart /* Regardless of the unregister upcall response, clear 240301649561SJames Smart * nvmei_support. All rports are unregistered and the 240401649561SJames Smart * driver will clean up. 240501649561SJames Smart */ 240601649561SJames Smart vport->nvmei_support = 0; 240701649561SJames Smart if (ret == 0) { 240801649561SJames Smart lpfc_printf_vlog(vport, 240901649561SJames Smart KERN_INFO, LOG_NVME_DISC, 241001649561SJames Smart "6009 Unregistered lport Success\n"); 241101649561SJames Smart } else { 241201649561SJames Smart lpfc_printf_vlog(vport, 241301649561SJames Smart KERN_INFO, LOG_NVME_DISC, 241401649561SJames Smart "6010 Unregistered lport " 241501649561SJames Smart "Failed, status x%x\n", 241601649561SJames Smart ret); 241701649561SJames Smart } 2418166d7211SJames Smart #endif 241901649561SJames Smart } 242001649561SJames Smart 242101649561SJames Smart void 242201649561SJames Smart lpfc_nvme_update_localport(struct lpfc_vport *vport) 242301649561SJames Smart { 24244410a67aSJames Smart #if (IS_ENABLED(CONFIG_NVME_FC)) 242501649561SJames Smart struct nvme_fc_local_port *localport; 242601649561SJames Smart struct lpfc_nvme_lport *lport; 242701649561SJames Smart 242801649561SJames Smart localport = vport->localport; 24294410a67aSJames Smart if (!localport) { 24304410a67aSJames Smart lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 24314410a67aSJames Smart "6710 Update NVME fail. No localport\n"); 24324410a67aSJames Smart return; 24334410a67aSJames Smart } 243401649561SJames Smart lport = (struct lpfc_nvme_lport *)localport->private; 24354410a67aSJames Smart if (!lport) { 24364410a67aSJames Smart lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 24374410a67aSJames Smart "6171 Update NVME fail. localP %p, No lport\n", 24384410a67aSJames Smart localport); 24394410a67aSJames Smart return; 24404410a67aSJames Smart } 244101649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 244201649561SJames Smart "6012 Update NVME lport %p did x%x\n", 244301649561SJames Smart localport, vport->fc_myDID); 244401649561SJames Smart 244501649561SJames Smart localport->port_id = vport->fc_myDID; 244601649561SJames Smart if (localport->port_id == 0) 244701649561SJames Smart localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY; 244801649561SJames Smart else 244901649561SJames Smart localport->port_role = FC_PORT_ROLE_NVME_INITIATOR; 245001649561SJames Smart 245101649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 245201649561SJames Smart "6030 bound lport %p to DID x%06x\n", 245301649561SJames Smart lport, localport->port_id); 24544410a67aSJames Smart #endif 245501649561SJames Smart } 245601649561SJames Smart 245701649561SJames Smart int 245801649561SJames Smart lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 245901649561SJames Smart { 24607d708033SJames Smart #if (IS_ENABLED(CONFIG_NVME_FC)) 246101649561SJames Smart int ret = 0; 246201649561SJames Smart struct nvme_fc_local_port *localport; 246301649561SJames Smart struct lpfc_nvme_lport *lport; 246401649561SJames Smart struct lpfc_nvme_rport *rport; 246501649561SJames Smart struct nvme_fc_remote_port *remote_port; 246601649561SJames Smart struct nvme_fc_port_info rpinfo; 24672b75d0f9SDick Kennedy struct lpfc_nodelist *prev_ndlp; 246801649561SJames Smart 246901649561SJames Smart lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC, 247001649561SJames Smart "6006 Register NVME PORT. DID x%06x nlptype x%x\n", 247101649561SJames Smart ndlp->nlp_DID, ndlp->nlp_type); 247201649561SJames Smart 247301649561SJames Smart localport = vport->localport; 2474bb6a8a2cSDick Kennedy if (!localport) 2475bb6a8a2cSDick Kennedy return 0; 2476bb6a8a2cSDick Kennedy 247701649561SJames Smart lport = (struct lpfc_nvme_lport *)localport->private; 247801649561SJames Smart 24797a06dcd3SJames Smart /* NVME rports are not preserved across devloss. 24807a06dcd3SJames Smart * Just register this instance. Note, rpinfo->dev_loss_tmo 24817a06dcd3SJames Smart * is left 0 to indicate accept transport defaults. The 24827a06dcd3SJames Smart * driver communicates port role capabilities consistent 24837a06dcd3SJames Smart * with the PRLI response data. 248401649561SJames Smart */ 24857a06dcd3SJames Smart memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info)); 24867a06dcd3SJames Smart rpinfo.port_id = ndlp->nlp_DID; 248701649561SJames Smart if (ndlp->nlp_type & NLP_NVME_TARGET) 24887a06dcd3SJames Smart rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET; 248901649561SJames Smart if (ndlp->nlp_type & NLP_NVME_INITIATOR) 24907a06dcd3SJames Smart rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR; 249101649561SJames Smart 24927a06dcd3SJames Smart if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 24937a06dcd3SJames Smart rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY; 24947a06dcd3SJames Smart 24957a06dcd3SJames Smart rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 24967a06dcd3SJames Smart rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 24977a06dcd3SJames Smart ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port); 24987a06dcd3SJames Smart if (!ret) { 24997a06dcd3SJames Smart /* If the ndlp already has an nrport, this is just 25007a06dcd3SJames Smart * a resume of the existing rport. Else this is a 25017a06dcd3SJames Smart * new rport. 25027a06dcd3SJames Smart */ 25037a06dcd3SJames Smart rport = remote_port->private; 25042b75d0f9SDick Kennedy if (ndlp->nrport) { 250501649561SJames Smart lpfc_printf_vlog(ndlp->vport, KERN_INFO, 250601649561SJames Smart LOG_NVME_DISC, 250701649561SJames Smart "6014 Rebinding lport to " 250801649561SJames Smart "rport wwpn 0x%llx, " 250901649561SJames Smart "Data: x%x x%x x%x x%06x\n", 251001649561SJames Smart remote_port->port_name, 251101649561SJames Smart remote_port->port_id, 251201649561SJames Smart remote_port->port_role, 251301649561SJames Smart ndlp->nlp_type, 251401649561SJames Smart ndlp->nlp_DID); 25152b75d0f9SDick Kennedy prev_ndlp = rport->ndlp; 25162b75d0f9SDick Kennedy 25172b75d0f9SDick Kennedy /* Sever the ndlp<->rport connection before dropping 25182b75d0f9SDick Kennedy * the ndlp ref from register. 25192b75d0f9SDick Kennedy */ 25202b75d0f9SDick Kennedy ndlp->nrport = NULL; 25212b75d0f9SDick Kennedy rport->ndlp = NULL; 25222b75d0f9SDick Kennedy if (prev_ndlp) 25232b75d0f9SDick Kennedy lpfc_nlp_put(ndlp); 25242b75d0f9SDick Kennedy } 25252b75d0f9SDick Kennedy 25262b75d0f9SDick Kennedy /* Clean bind the rport to the ndlp. */ 252701649561SJames Smart rport->remoteport = remote_port; 252801649561SJames Smart rport->lport = lport; 252901649561SJames Smart rport->ndlp = lpfc_nlp_get(ndlp); 253001649561SJames Smart if (!rport->ndlp) 253101649561SJames Smart return -1; 253201649561SJames Smart ndlp->nrport = rport; 253301649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, 253401649561SJames Smart LOG_NVME_DISC | LOG_NODE, 25357a06dcd3SJames Smart "6022 Binding new rport to " 25367a06dcd3SJames Smart "lport %p Rport WWNN 0x%llx, " 25377a06dcd3SJames Smart "Rport WWPN 0x%llx DID " 25387a06dcd3SJames Smart "x%06x Role x%x\n", 253901649561SJames Smart lport, 254001649561SJames Smart rpinfo.node_name, rpinfo.port_name, 254101649561SJames Smart rpinfo.port_id, rpinfo.port_role); 254201649561SJames Smart } else { 254301649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, 254401649561SJames Smart LOG_NVME_DISC | LOG_NODE, 254501649561SJames Smart "6031 RemotePort Registration failed " 254601649561SJames Smart "err: %d, DID x%06x\n", 254701649561SJames Smart ret, ndlp->nlp_DID); 254801649561SJames Smart } 25497a06dcd3SJames Smart 255001649561SJames Smart return ret; 2551166d7211SJames Smart #else 2552166d7211SJames Smart return 0; 2553166d7211SJames Smart #endif 255401649561SJames Smart } 255501649561SJames Smart 2556add9d6beSJames Smart /* lpfc_nvme_rport_unreg_wait - Wait for the host to complete an rport unreg. 2557add9d6beSJames Smart * 2558add9d6beSJames Smart * The driver has to wait for the host nvme transport to callback 2559add9d6beSJames Smart * indicating the remoteport has successfully unregistered all 2560add9d6beSJames Smart * resources. Since this is an uninterruptible wait, loop every ten 2561add9d6beSJames Smart * seconds and print a message indicating no progress. 2562add9d6beSJames Smart * 2563add9d6beSJames Smart * An uninterruptible wait is used because of the risk of transport-to- 2564add9d6beSJames Smart * driver state mismatch. 2565add9d6beSJames Smart */ 2566add9d6beSJames Smart void 2567add9d6beSJames Smart lpfc_nvme_rport_unreg_wait(struct lpfc_vport *vport, 2568add9d6beSJames Smart struct lpfc_nvme_rport *rport) 2569add9d6beSJames Smart { 2570add9d6beSJames Smart #if (IS_ENABLED(CONFIG_NVME_FC)) 2571add9d6beSJames Smart u32 wait_tmo; 2572add9d6beSJames Smart int ret; 2573add9d6beSJames Smart 2574add9d6beSJames Smart /* Host transport has to clean up and confirm requiring an indefinite 2575add9d6beSJames Smart * wait. Print a message if a 10 second wait expires and renew the 2576add9d6beSJames Smart * wait. This is unexpected. 2577add9d6beSJames Smart */ 2578add9d6beSJames Smart wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000); 2579add9d6beSJames Smart while (true) { 2580add9d6beSJames Smart ret = wait_for_completion_timeout(&rport->rport_unreg_done, 2581add9d6beSJames Smart wait_tmo); 2582add9d6beSJames Smart if (unlikely(!ret)) { 2583add9d6beSJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 2584add9d6beSJames Smart "6174 Rport %p Remoteport %p wait " 2585add9d6beSJames Smart "timed out. Renewing.\n", 2586add9d6beSJames Smart rport, rport->remoteport); 2587add9d6beSJames Smart continue; 2588add9d6beSJames Smart } 2589add9d6beSJames Smart break; 2590add9d6beSJames Smart } 2591add9d6beSJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 2592add9d6beSJames Smart "6175 Rport %p Remoteport %p Complete Success\n", 2593add9d6beSJames Smart rport, rport->remoteport); 2594add9d6beSJames Smart #endif 2595add9d6beSJames Smart } 2596add9d6beSJames Smart 259701649561SJames Smart /* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport. 259801649561SJames Smart * 259901649561SJames Smart * There is no notion of Devloss or rport recovery from the current 260001649561SJames Smart * nvme_transport perspective. Loss of an rport just means IO cannot 260101649561SJames Smart * be sent and recovery is completely up to the initator. 260201649561SJames Smart * For now, the driver just unbinds the DID and port_role so that 260301649561SJames Smart * no further IO can be issued. Changes are planned for later. 260401649561SJames Smart * 260501649561SJames Smart * Notes - the ndlp reference count is not decremented here since 260601649561SJames Smart * since there is no nvme_transport api for devloss. Node ref count 260701649561SJames Smart * is only adjusted in driver unload. 260801649561SJames Smart */ 260901649561SJames Smart void 261001649561SJames Smart lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 261101649561SJames Smart { 26127d708033SJames Smart #if (IS_ENABLED(CONFIG_NVME_FC)) 261301649561SJames Smart int ret; 261401649561SJames Smart struct nvme_fc_local_port *localport; 261501649561SJames Smart struct lpfc_nvme_lport *lport; 261601649561SJames Smart struct lpfc_nvme_rport *rport; 261701649561SJames Smart struct nvme_fc_remote_port *remoteport; 261801649561SJames Smart 261901649561SJames Smart localport = vport->localport; 262001649561SJames Smart 262101649561SJames Smart /* This is fundamental error. The localport is always 262201649561SJames Smart * available until driver unload. Just exit. 262301649561SJames Smart */ 262401649561SJames Smart if (!localport) 262501649561SJames Smart return; 262601649561SJames Smart 262701649561SJames Smart lport = (struct lpfc_nvme_lport *)localport->private; 262801649561SJames Smart if (!lport) 262901649561SJames Smart goto input_err; 263001649561SJames Smart 263101649561SJames Smart rport = ndlp->nrport; 263201649561SJames Smart if (!rport) 263301649561SJames Smart goto input_err; 263401649561SJames Smart 263501649561SJames Smart remoteport = rport->remoteport; 263601649561SJames Smart lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 263701649561SJames Smart "6033 Unreg nvme remoteport %p, portname x%llx, " 263801649561SJames Smart "port_id x%06x, portstate x%x port type x%x\n", 263901649561SJames Smart remoteport, remoteport->port_name, 264001649561SJames Smart remoteport->port_id, remoteport->port_state, 264101649561SJames Smart ndlp->nlp_type); 264201649561SJames Smart 264301649561SJames Smart /* Sanity check ndlp type. Only call for NVME ports. Don't 264401649561SJames Smart * clear any rport state until the transport calls back. 264501649561SJames Smart */ 26463b5bde69SJames Smart 26473b5bde69SJames Smart if (ndlp->nlp_type & NLP_NVME_TARGET) { 264801649561SJames Smart init_completion(&rport->rport_unreg_done); 26497a06dcd3SJames Smart 26507a06dcd3SJames Smart /* No concern about the role change on the nvme remoteport. 26517a06dcd3SJames Smart * The transport will update it. 26527a06dcd3SJames Smart */ 2653add9d6beSJames Smart ndlp->upcall_flags |= NLP_WAIT_FOR_UNREG; 265401649561SJames Smart ret = nvme_fc_unregister_remoteport(remoteport); 2655add9d6beSJames Smart if (ret != 0) 265601649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 265701649561SJames Smart "6167 NVME unregister failed %d " 265801649561SJames Smart "port_state x%x\n", 265901649561SJames Smart ret, remoteport->port_state); 2660add9d6beSJames Smart else 2661add9d6beSJames Smart /* Wait for completion. This either blocks 2662add9d6beSJames Smart * indefinitely or succeeds 2663add9d6beSJames Smart */ 2664add9d6beSJames Smart lpfc_nvme_rport_unreg_wait(vport, rport); 2665add9d6beSJames Smart ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG; 266601649561SJames Smart } 266701649561SJames Smart return; 266801649561SJames Smart 266901649561SJames Smart input_err: 2670166d7211SJames Smart #endif 267101649561SJames Smart lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 26722b7824d0SJames Smart "6168 State error: lport %p, rport%p FCID x%06x\n", 267301649561SJames Smart vport->localport, ndlp->rport, ndlp->nlp_DID); 267401649561SJames Smart } 2675318083adSJames Smart 2676318083adSJames Smart /** 2677318083adSJames Smart * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort 2678318083adSJames Smart * @phba: pointer to lpfc hba data structure. 2679318083adSJames Smart * @axri: pointer to the fcp xri abort wcqe structure. 2680318083adSJames Smart * 2681318083adSJames Smart * This routine is invoked by the worker thread to process a SLI4 fast-path 2682952c303bSDick Kennedy * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2683952c303bSDick Kennedy * here. 2684318083adSJames Smart **/ 2685318083adSJames Smart void 2686318083adSJames Smart lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba, 2687318083adSJames Smart struct sli4_wcqe_xri_aborted *axri) 2688318083adSJames Smart { 2689318083adSJames Smart uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 2690318083adSJames Smart struct lpfc_nvme_buf *lpfc_ncmd, *next_lpfc_ncmd; 2691952c303bSDick Kennedy struct nvmefc_fcp_req *nvme_cmd = NULL; 2692318083adSJames Smart struct lpfc_nodelist *ndlp; 2693318083adSJames Smart unsigned long iflag = 0; 2694318083adSJames Smart 2695318083adSJames Smart if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) 2696318083adSJames Smart return; 2697318083adSJames Smart spin_lock_irqsave(&phba->hbalock, iflag); 2698318083adSJames Smart spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock); 2699318083adSJames Smart list_for_each_entry_safe(lpfc_ncmd, next_lpfc_ncmd, 2700318083adSJames Smart &phba->sli4_hba.lpfc_abts_nvme_buf_list, 2701318083adSJames Smart list) { 2702318083adSJames Smart if (lpfc_ncmd->cur_iocbq.sli4_xritag == xri) { 2703bbe3012bSJames Smart list_del_init(&lpfc_ncmd->list); 2704318083adSJames Smart lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 2705318083adSJames Smart lpfc_ncmd->status = IOSTAT_SUCCESS; 2706318083adSJames Smart spin_unlock( 2707318083adSJames Smart &phba->sli4_hba.abts_nvme_buf_list_lock); 2708318083adSJames Smart 2709318083adSJames Smart spin_unlock_irqrestore(&phba->hbalock, iflag); 2710318083adSJames Smart ndlp = lpfc_ncmd->ndlp; 2711952c303bSDick Kennedy if (ndlp) 2712318083adSJames Smart lpfc_sli4_abts_err_handler(phba, ndlp, axri); 271386c67379SJames Smart 271486c67379SJames Smart lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2715952c303bSDick Kennedy "6311 nvme_cmd %p xri x%x tag x%x " 2716952c303bSDick Kennedy "abort complete and xri released\n", 2717952c303bSDick Kennedy lpfc_ncmd->nvmeCmd, xri, 2718952c303bSDick Kennedy lpfc_ncmd->cur_iocbq.iotag); 271986c67379SJames Smart 2720952c303bSDick Kennedy /* Aborted NVME commands are required to not complete 2721952c303bSDick Kennedy * before the abort exchange command fully completes. 2722952c303bSDick Kennedy * Once completed, it is available via the put list. 2723952c303bSDick Kennedy */ 2724952c303bSDick Kennedy nvme_cmd = lpfc_ncmd->nvmeCmd; 2725952c303bSDick Kennedy nvme_cmd->done(nvme_cmd); 2726318083adSJames Smart lpfc_release_nvme_buf(phba, lpfc_ncmd); 2727318083adSJames Smart return; 2728318083adSJames Smart } 2729318083adSJames Smart } 2730318083adSJames Smart spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock); 2731318083adSJames Smart spin_unlock_irqrestore(&phba->hbalock, iflag); 273286c67379SJames Smart 273386c67379SJames Smart lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 273486c67379SJames Smart "6312 XRI Aborted xri x%x not found\n", xri); 273586c67379SJames Smart 2736318083adSJames Smart } 2737c3725bdcSJames Smart 2738c3725bdcSJames Smart /** 2739c3725bdcSJames Smart * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete 2740c3725bdcSJames Smart * @phba: Pointer to HBA context object. 2741c3725bdcSJames Smart * 2742c3725bdcSJames Smart * This function flushes all wqes in the nvme rings and frees all resources 2743c3725bdcSJames Smart * in the txcmplq. This function does not issue abort wqes for the IO 2744c3725bdcSJames Smart * commands in txcmplq, they will just be returned with 2745c3725bdcSJames Smart * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI 2746c3725bdcSJames Smart * slot has been permanently disabled. 2747c3725bdcSJames Smart **/ 2748c3725bdcSJames Smart void 2749c3725bdcSJames Smart lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba) 2750c3725bdcSJames Smart { 2751c3725bdcSJames Smart struct lpfc_sli_ring *pring; 2752c3725bdcSJames Smart u32 i, wait_cnt = 0; 2753c3725bdcSJames Smart 2754c3725bdcSJames Smart if (phba->sli_rev < LPFC_SLI_REV4) 2755c3725bdcSJames Smart return; 2756c3725bdcSJames Smart 2757c3725bdcSJames Smart /* Cycle through all NVME rings and make sure all outstanding 2758c3725bdcSJames Smart * WQEs have been removed from the txcmplqs. 2759c3725bdcSJames Smart */ 2760c3725bdcSJames Smart for (i = 0; i < phba->cfg_nvme_io_channel; i++) { 2761c3725bdcSJames Smart pring = phba->sli4_hba.nvme_wq[i]->pring; 2762c3725bdcSJames Smart 2763c3725bdcSJames Smart /* Retrieve everything on the txcmplq */ 2764c3725bdcSJames Smart while (!list_empty(&pring->txcmplq)) { 2765c3725bdcSJames Smart msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1); 2766c3725bdcSJames Smart wait_cnt++; 2767c3725bdcSJames Smart 2768c3725bdcSJames Smart /* The sleep is 10mS. Every ten seconds, 2769c3725bdcSJames Smart * dump a message. Something is wrong. 2770c3725bdcSJames Smart */ 2771c3725bdcSJames Smart if ((wait_cnt % 1000) == 0) { 2772c3725bdcSJames Smart lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2773c3725bdcSJames Smart "6178 NVME IO not empty, " 2774c3725bdcSJames Smart "cnt %d\n", wait_cnt); 2775c3725bdcSJames Smart } 2776c3725bdcSJames Smart } 2777c3725bdcSJames Smart } 2778c3725bdcSJames Smart } 2779